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Jobctl warning commented out.  Largely untested.

Change-Id: I4dffe23a2855a374628c820703b51591633aed64
This commit is contained in:
David van Moolenbroek 2015-09-28 11:36:43 +00:00
parent 29346ab043
commit d1e4d7ce7d
41 changed files with 23896 additions and 2 deletions
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# $NetBSD: Makefile,v 1.22 2007/12/31 15:31:24 ad Exp $
# @(#)Makefile 8.1 (Berkeley) 5/31/93
SUBDIR= cat chmod cp date dd df domainname echo ed expr hostname \
SUBDIR= cat chmod cp csh date dd df domainname echo ed expr hostname \
kill ksh ln ls mkdir mv pax pwd rcp rcmd rm rmdir sh \
sleep stty sync test

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# $NetBSD: Makefile,v 1.39 2013/07/16 17:47:43 christos Exp $
# @(#)Makefile 8.1 (Berkeley) 5/31/93
#
# C Shell with process control; VM/UNIX VAX Makefile
# Bill Joy UC Berkeley; Jim Kulp IIASA, Austria
#
# To profile, put -DPROF in DFLAGS and -pg in COPTS, and recompile.
.include <bsd.own.mk>
WARNS=6
PROG= csh
DFLAGS=-DBUILTIN -DFILEC -DNLS -DSHORT_STRINGS
# - Editor history not always aligned with shell history,
# should implement internally
# - Does not handle escaped prompts.
# - Does not do completion
.ifndef SMALLPROG
DFLAGS+=-DEDIT
.endif
CPPFLAGS+=-I${.CURDIR} -I. ${DFLAGS}
SRCS= alloc.c char.c const.c csh.c dir.c dol.c err.c exec.c exp.c file.c \
func.c glob.c hist.c init.c lex.c misc.c parse.c printf.c proc.c \
sem.c set.c str.c time.c
.PATH: ${NETBSDSRCDIR}/usr.bin/printf
MLINKS= csh.1 limit.1 csh.1 alias.1 csh.1 bg.1 csh.1 dirs.1 csh.1 fg.1 \
csh.1 foreach.1 csh.1 history.1 csh.1 jobs.1 csh.1 popd.1 \
csh.1 pushd.1 csh.1 rehash.1 csh.1 repeat.1 csh.1 suspend.1 \
csh.1 stop.1 csh.1 source.1
DPSRCS+= errnum.h const.h
CLEANFILES+= errnum.h const.h
errnum.h: err.c
${_MKTARGET_CREATE}
rm -f ${.TARGET}
(\
echo '/* Do not edit this file, make creates it. */' ;\
echo '#ifndef _h_sh_errnum' ;\
echo '#define _h_sh_errnum' ;\
egrep 'ERR_' ${.ALLSRC} | egrep '^#define' ;\
echo '#endif /* _h_sh_errnum */' ;\
) > ${.TARGET}
const.c: errnum.h
const.h: const.c
${_MKTARGET_CREATE}
rm -f ${.TARGET}
echo '/* Do not edit this file, make creates it. */' > ${.TARGET}
${CC} -E ${CPPFLAGS} ${.ALLSRC} | egrep 'Char STR' | \
${TOOL_SED} -e 's/Char \([a-zA-Z0-9_]*\)\(.*\)/extern Char \1[];/' | \
sort >> ${.TARGET}
.if make(install)
SUBDIR+=USD.doc
.endif
# XXX Only GCC 4.1 problem
.if defined(HAVE_GCC) && ${HAVE_GCC} == 4 && ${MACHINE_ARCH} == "vax"
COPTS.parse.c+= -O0
.endif
COPTS.err.c = -Wno-format-nonliteral
COPTS.printf.c = -Wno-format-nonliteral
COPTS.proc.c = -Wno-format-nonliteral
.if !empty(DFLAGS:M*EDIT)
LDADD+=-ledit -lterminfo -lutil
DPADD+=${LIBEDIT} ${LIBUTIL}
.else
LDADD+=-lutil
DPADD+=${LIBUTIL}
.endif
.include <bsd.prog.mk>
.include <bsd.subdir.mk>

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# $NetBSD: Makefile,v 1.7 2007/10/18 18:26:31 tls Exp $
# @(#)Makefile 8.1 (Berkeley) 8/14/93
DIR= usd/04.csh
SRCS= tabs csh.1 csh.2 csh.3 csh.4 csh.ap csh.g
MACROS= -ms
paper.ps: ${SRCS}
${TOOL_SOELIM} -I${.CURDIR} ${.ALLSRC} | \
${TOOL_ROFF_PS} ${MACROS} > ${.TARGET}
.include <bsd.doc.mk>

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.\" $NetBSD: csh.3,v 1.5 2003/08/07 09:05:08 agc Exp $
.\"
.\" Copyright (c) 1980, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)csh.3 8.1 (Berkeley) 6/8/93
.\"
.nr H1 2
.NH
Shell control structures and command scripts
.NH 2
Introduction
.PP
It is possible to place commands in files and to cause shells to be
invoked to read and execute commands from these files,
which are called
.I "shell scripts."
We here detail those features of the shell useful to the writers of such
scripts.
.NH 2
Make
.PP
It is important to first note what shell scripts are
.I not
useful for.
There is a program called
.I make
which is very useful for maintaining a group of related files
or performing sets of operations on related files.
For instance a large program consisting of one or more files
can have its dependencies described in a
.I makefile
which contains definitions of the commands used to create these
different files when changes occur.
Definitions of the means for printing listings, cleaning up the directory
in which the files reside, and installing the resultant programs
are easily, and most appropriately placed in this
.I makefile.
This format is superior and preferable to maintaining a group of shell
procedures to maintain these files.
.PP
Similarly when working on a document a
.I makefile
may be created which defines how different versions of the document
are to be created and which options of
.I nroff
or
.I troff
are appropriate.
.NH 2
Invocation and the argv variable
.PP
A
.I csh
command script may be interpreted by saying
.DS
% csh script ...
.DE
where
.I script
is the name of the file containing a group of
.I csh
commands and
`\&...' is replaced by a sequence of arguments.
The shell places these arguments in the variable
.I argv
and then begins to read commands from the script.
These parameters are then available through the same mechanisms
which are used to reference any other shell variables.
.PP
If you make the file
`script'
executable by doing
.DS
chmod 755 script
.DE
and place a shell comment at the beginning of the shell script
(i.e. begin the file with a `#' character)
then a `/bin/csh' will automatically be invoked to execute `script' when
you type
.DS
script
.DE
If the file does not begin with a `#' then the standard shell
`/bin/sh' will be used to execute it.
This allows you to convert your older shell scripts to use
.I csh
at your convenience.
.NH 2
Variable substitution
.PP
After each input line is broken into words and history substitutions
are done on it, the input line is parsed into distinct commands.
Before each command is executed a mechanism know as
.I "variable substitution"
is done on these words.
Keyed by the character `$' this substitution replaces the names
of variables by their values.
Thus
.DS
echo $argv
.DE
when placed in a command script would cause the current value of the
variable
.I argv
to be echoed to the output of the shell script.
It is an error for
.I argv
to be unset at this point.
.PP
A number of notations are provided for accessing components and attributes
of variables.
The notation
.DS
$?name
.DE
expands to `1' if name is
.I set
or to `0'
if name is not
.I set.
It is the fundamental mechanism used for checking whether particular
variables have been assigned values.
All other forms of reference to undefined variables cause errors.
.PP
The notation
.DS
$#name
.DE
expands to the number of elements in the variable
.I name.
Thus
.DS
% set argv=(a b c)
% echo $?argv
1
% echo $#argv
3
% unset argv
% echo $?argv
0
% echo $argv
Undefined variable: argv.
%
.DE
.PP
It is also possible to access the components of a variable
which has several values.
Thus
.DS
$argv[1]
.DE
gives the first component of
.I argv
or in the example above `a'.
Similarly
.DS
$argv[$#argv]
.DE
would give `c',
and
.DS
$argv[1\-2]
.DE
would give `a b'. Other notations useful in shell scripts are
.DS
$\fIn\fR
.DE
where
.I n
is an integer as a shorthand for
.DS
$argv[\fIn\fR\|]
.DE
the
.I n\|th
parameter and
.DS
$*
.DE
which is a shorthand for
.DS
$argv
.DE
The form
.DS
$$
.DE
expands to the process number of the current shell.
Since this process number is unique in the system it can
be used in generation of unique temporary file names.
The form
.DS
$<
.DE
is quite special and is replaced by the next line of input read from
the shell's standard input (not the script it is reading). This is
useful for writing shell scripts that are interactive, reading
commands from the terminal, or even writing a shell script that
acts as a filter, reading lines from its input file. Thus the sequence
.DS
echo 'yes or no?\ec'
set a=($<)
.DE
would write out the prompt `yes or no?' without a newline and then
read the answer into the variable `a'. In this case `$#a' would be
`0' if either a blank line or end-of-file (^D) was typed.
.PP
One minor difference between `$\fIn\fR\|' and `$argv[\fIn\fR\|]'
should be noted here.
The form
`$argv[\fIn\fR\|]'
will yield an error if
.I n
is not in the range
`1\-$#argv'
while `$n'
will never yield an out of range subscript error.
This is for compatibility with the way older shells handled parameters.
.PP
Another important point is that it is never an error to give a subrange
of the form `n\-'; if there are less than
.I n
components of the given variable then no words are substituted.
A range of the form `m\-n' likewise returns an empty vector without giving
an error when \fIm\fR exceeds the number of elements of the given variable,
provided the subscript \fIn\fR is in range.
.NH 2
Expressions
.PP
In order for interesting shell scripts to be constructed it
must be possible to evaluate expressions in the shell based on the
values of variables.
In fact, all the arithmetic operations of the language C are available
in the shell
with the same precedence that they have in C.
In particular, the operations `==' and `!=' compare strings
and the operators `&&' and `|\|\||' implement the boolean and/or operations.
The special operators `=~' and `!~' are similar to `==' and `!=' except
that the string on the right side can have pattern matching characters
(like *, ? or []) and the test is whether the string on the left matches
the pattern on the right.
.PP
The shell also allows file enquiries of the form
.DS
\-? filename
.DE
where `?' is replace by a number of single characters.
For instance the expression primitive
.DS
\-e filename
.DE
tell whether the file
`filename'
exists.
Other primitives test for read, write and execute access to the file,
whether it is a directory, or has non-zero length.
.PP
It is possible to test whether a command terminates normally,
by a primitive of the
form `{ command }' which returns true, i.e. `1' if the command
succeeds exiting normally with exit status 0, or `0' if the command
terminates abnormally or with exit status non-zero.
If more detailed information about the execution status of a command
is required, it can be executed and the variable `$status' examined
in the next command.
Since `$status' is set by every command, it is very transient.
It can be saved if it is inconvenient to use it only in the single
immediately following command.
.PP
For a full list of expression components available see the manual
section for the shell.
.NH 2
Sample shell script
.PP
A sample shell script which makes use of the expression mechanism
of the shell and some of its control structure follows:
.DS
% cat copyc
#
# Copyc copies those C programs in the specified list
# to the directory ~/backup if they differ from the files
# already in ~/backup
#
set noglob
foreach i ($argv)
if ($i !~ *.c) continue # not a .c file so do nothing
if (! \-r ~/backup/$i:t) then
echo $i:t not in backup... not cp\e\'ed
continue
endif
cmp \-s $i ~/backup/$i:t # to set $status
if ($status != 0) then
echo new backup of $i
cp $i ~/backup/$i:t
endif
end
.DE
.PP
This script makes use of the
.I foreach
command, which causes the shell to execute the commands between the
.I foreach
and the matching
.I end
for each of the values given between `(' and `)' with the named
variable, in this case `i' set to successive values in the list.
Within this loop we may use the command
.I break
to stop executing the loop
and
.I continue
to prematurely terminate one iteration
and begin the next.
After the
.I foreach
loop the iteration variable
(\fIi\fR in this case)
has the value at the last iteration.
.PP
We set the variable
.I noglob
here to prevent filename expansion of the members of
.I argv.
This is a good idea, in general, if the arguments to a shell script
are filenames which have already been expanded or if the arguments
may contain filename expansion metacharacters.
It is also possible to quote each use of a `$' variable expansion,
but this is harder and less reliable.
.PP
The other control construct used here is a statement of the form
.DS
\fBif\fR ( expression ) \fBthen\fR
command
...
\fBendif\fR
.DE
The placement of the keywords here is
.B not
flexible due to the current implementation of the shell.\(dg
.FS
\(dgThe following two formats are not currently acceptable to the shell:
.sp
.in +5
.nf
\fBif\fR ( expression ) # \fBWon't work!\fR
\fBthen\fR
command
...
\fBendif\fR
.fi
.in -5
.sp
and
.sp
.in +5
.nf
\fBif\fR ( expression ) \fBthen\fR command \fBendif\fR # \fBWon't work\fR
.in -5
.fi
.FE
.PP
The shell does have another form of the if statement of the form
.DS
\fBif\fR ( expression ) \fBcommand\fR
.DE
which can be written
.DS
\fBif\fR ( expression ) \e
command
.DE
Here we have escaped the newline for the sake of appearance.
The command must not involve `\||\|', `&' or `;'
and must not be another control command.
The second form requires the final `\e' to
.B immediately
precede the end-of-line.
.PP
The more general
.I if
statements above also admit a sequence of
.I else\-if
pairs followed by a single
.I else
and an
.I endif,
e.g.:
.DS
\fBif\fR ( expression ) \fBthen\fR
commands
\fBelse\fR \fBif\fR (expression ) \fBthen\fR
commands
\&...
\fBelse\fR
commands
\fBendif\fR
.DE
.PP
Another important mechanism used in shell scripts is the `:' modifier.
We can use the modifier `:r' here to extract a root of a filename or
`:e' to extract the
.I extension.
Thus if the variable
.I i
has the value
`/mnt/foo.bar'
then
.sp
.in +5
.nf
% echo $i $i:r $i:e
/mnt/foo.bar /mnt/foo bar
%
.sp
.in -5
.fi
shows how the `:r' modifier strips off the trailing `.bar' and the
the `:e' modifier leaves only the `bar'.
Other modifiers will take off the last component of a pathname leaving
the head `:h' or all but the last component of a pathname leaving the
tail `:t'.
These modifiers are fully described in the
.I csh
manual pages in the User's Reference Manual.
It is also possible to use the
.I "command substitution"
mechanism described in the next major section to perform modifications
on strings to then reenter the shell's environment.
Since each usage of this mechanism involves the creation of a new process,
it is much more expensive to use than the `:' modification mechanism.\(dd
.FS
\(dd It is also important to note that
the current implementation of the shell limits the number of `:' modifiers
on a `$' substitution to 1.
Thus
.sp
.nf
.in +5
% echo $i $i:h:t
/a/b/c /a/b:t
%
.in -5
.fi
.sp
does not do what one would expect.
.FE
Finally, we note that the character `#' lexically introduces a shell
comment in shell scripts (but not from the terminal).
All subsequent characters on the input line after a `#' are discarded
by the shell.
This character can be quoted using `\'' or `\e' to place it in
an argument word.
.NH 2
Other control structures
.PP
The shell also has control structures
.I while
and
.I switch
similar to those of C.
These take the forms
.DS
\fBwhile\fR ( expression )
commands
\fBend\fR
.DE
and
.DS
\fBswitch\fR ( word )
\fBcase\fR str1:
commands
\fBbreaksw\fR
\& ...
\fBcase\fR strn:
commands
\fBbreaksw\fR
\fBdefault:\fR
commands
\fBbreaksw\fR
\fBendsw\fR
.DE
For details see the manual section for
.I csh.
C programmers should note that we use
.I breaksw
to exit from a
.I switch
while
.I break
exits a
.I while
or
.I foreach
loop.
A common mistake to make in
.I csh
scripts is to use
.I break
rather than
.I breaksw
in switches.
.PP
Finally,
.I csh
allows a
.I goto
statement, with labels looking like they do in C, i.e.:
.DS
loop:
commands
\fBgoto\fR loop
.DE
.NH 2
Supplying input to commands
.PP
Commands run from shell scripts receive by default the standard
input of the shell which is running the script.
This is different from previous shells running
under \s-2UNIX\s0. It allows shell scripts to fully participate
in pipelines, but mandates extra notation for commands which are to take
inline data.
.PP
Thus we need a metanotation for supplying inline data to commands in
shell scripts.
As an example, consider this script which runs the editor to
delete leading blanks from the lines in each argument file:
.DS
% cat deblank
# deblank \-\- remove leading blanks
foreach i ($argv)
ed \- $i << \'EOF\'
1,$s/^[ ]*//
w
q
\&\'EOF\'
end
%
.DE
The notation `<< \'EOF\''
means that the standard input for the
.I ed
command is to come from the text in the shell script file
up to the next line consisting of exactly `\'EOF\''.
The fact that the `EOF' is enclosed in `\'' characters, i.e. quoted,
causes the shell to not perform variable substitution on the
intervening lines.
In general, if any part of the word following the `<<' which the
shell uses to terminate the text to be given to the command is quoted
then these substitutions will not be performed.
In this case since we used the form `1,$' in our editor script
we needed to insure that this `$' was not variable substituted.
We could also have insured this by preceding the `$' here with a `\e',
i.e.:
.DS
1,\e$s/^[ ]*//
.DE
but quoting the `EOF' terminator is a more reliable way of achieving the
same thing.
.NH 2
Catching interrupts
.PP
If our shell script creates temporary files, we may wish to catch
interruptions of the shell script so that we can clean up
these files.
We can then do
.DS
onintr label
.DE
where
.I label
is a label in our program.
If an interrupt is received the shell will do a
`goto label'
and we can remove the temporary files and then do an
.I exit
command (which is built in to the shell)
to exit from the shell script.
If we wish to exit with a non-zero status we can do
.DS
exit(1)
.DE
e.g. to exit with status `1'.
.NH 2
What else?
.PP
There are other features of the shell useful to writers of shell
procedures.
The
.I verbose
and
.I echo
options and the related
.I \-v
and
.I \-x
command line options can be used to help trace the actions of the shell.
The
.I \-n
option causes the shell only to read commands and not to execute
them and may sometimes be of use.
.PP
One other thing to note is that
.I csh
will not execute shell scripts which do not begin with the
character `#', that is shell scripts that do not begin with a comment.
Similarly, the `/bin/sh' on your system may well defer to `csh'
to interpret shell scripts which begin with `#'.
This allows shell scripts for both shells to live in harmony.
.PP
There is also another quotation mechanism using `"' which allows
only some of the expansion mechanisms we have so far discussed to occur
on the quoted string and serves to make this string into a single word
as `\'' does.
.bp

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.\" $NetBSD: csh.4,v 1.4 2003/08/07 09:05:08 agc Exp $
.\"
.\" Copyright (c) 1980, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)csh.4 8.1 (Berkeley) 6/8/93
.\"
.nr H1 3
.NH
Other, less commonly used, shell features
.NH 2
Loops at the terminal; variables as vectors
.PP
It is occasionally useful to use the
.I foreach
control structure at the terminal to aid in performing a number
of similar commands.
For instance, there were at one point three shells in use on the Cory \s-2UNIX\s0
system at Cory Hall,
`/bin/sh',
`/bin/nsh',
and
`/bin/csh'.
To count the number of persons using each shell one could have issued
the commands
.DS
% grep \-c csh$ /etc/passwd
27
% grep \-c nsh$ /etc/passwd
128
% grep \-c \-v sh$ /etc/passwd
430
%
.DE
Since these commands are very similar we can use
.I foreach
to do this more easily.
.DS
% foreach i (\'sh$\' \'csh$\' \'\-v sh$\')
? grep \-c $i /etc/passwd
? end
27
128
430
%
.DE
Note here that the shell prompts for
input with `? ' when reading the body of the loop.
.PP
Very useful with loops are variables which contain lists of filenames
or other words.
You can, for example, do
.DS
% set a=(\`ls\`)
% echo $a
csh.n csh.rm
% ls
csh.n
csh.rm
% echo $#a
2
%
.DE
The
.I set
command here gave the variable
.I a
a list of all the filenames in the current directory as value.
We can then iterate over these names to perform any chosen function.
.PP
The output of a command within `\`' characters is converted by
the shell to a list of words.
You can also place the `\`' quoted string within `"' characters
to take each (non-empty) line as a component of the variable;
preventing the lines from being split into words at blanks and tabs.
A modifier `:x' exists which can be used later to expand each component
of the variable into another variable splitting it into separate words
at embedded blanks and tabs.
.NH 2
Braces { ... } in argument expansion
.PP
Another form of filename expansion, alluded
to before involves the characters `{' and `}'.
These characters specify that the contained strings, separated by `,'
are to be consecutively substituted into the containing characters
and the results expanded left to right.
Thus
.DS
A{str1,str2,...strn}B
.DE
expands to
.DS
Astr1B Astr2B ... AstrnB
.DE
This expansion occurs before the other filename expansions, and may
be applied recursively (i.e. nested).
The results of each expanded string are sorted separately, left
to right order being preserved.
The resulting filenames are not required to exist if no other expansion
mechanisms are used.
This means that this mechanism can be used to generate arguments which are
not filenames, but which have common parts.
.PP
A typical use of this would be
.DS
mkdir ~/{hdrs,retrofit,csh}
.DE
to make subdirectories `hdrs', `retrofit' and `csh'
in your home directory.
This mechanism is most useful when the common prefix is longer
than in this example, i.e.
.DS
chown root /usr/{ucb/{ex,edit},lib/{ex?.?*,how_ex}}
.DE
.NH 2
Command substitution
.PP
A command enclosed in `\`' characters is replaced, just before
filenames are expanded, by the output from that command.
Thus it is possible to do
.DS
set pwd=\`pwd\`
.DE
to save the current directory in the variable
.I pwd
or to do
.DS
ex \`grep \-l TRACE *.c\`
.DE
to run the editor
.I ex
supplying as arguments those files whose names end in `.c'
which have the string `TRACE' in them.*
.FS
*Command expansion also occurs in input redirected with `<<'
and within `"' quotations.
Refer to the shell manual section for full details.
.FE
.NH 2
Other details not covered here
.PP
In particular circumstances it may be necessary to know the exact
nature and order of different substitutions performed by the shell.
The exact meaning of certain combinations of quotations is also
occasionally important.
These are detailed fully in its manual section.
.PP
The shell has a number of command line option flags mostly of use
in writing \s-2UNIX\s0 programs,
and debugging shell scripts.
See the csh(1) manual section for a list of these options.
.bp

93
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.\" $NetBSD: csh.ap,v 1.1 2007/10/18 18:26:31 tls Exp $
.\"
.\" Copyright (c) 1980, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)csh.a 8.1 (Berkeley) 6/8/93
.\"
.SH
Appendix \- Special characters
.LP
The following table lists the special characters of
.I csh
and the \s-2UNIX\s0 system, giving for each the section(s) in which it
is discussed.
A number of these characters also have special meaning in expressions.
See the
.I csh
manual section
for a complete list.
.ta .75i 1.5i 2.25i
.LP
Syntactic metacharacters
.DS
; 2.4 separates commands to be executed sequentially
| 1.5 separates commands in a pipeline
( ) 2.2,3.6 brackets expressions and variable values
& 2.5 follows commands to be executed without waiting for completion
.DE
.LP
Filename metacharacters
.DS
/ 1.6 separates components of a file's pathname
\&. 1.6 separates root parts of a file name from extensions
? 1.6 expansion character matching any single character
* 1.6 expansion character matching any sequence of characters
[ ] 1.6 expansion sequence matching any single character from a set
~ 1.6 used at the beginning of a filename to indicate home directories
{ } 4.2 used to specify groups of arguments with common parts
.DE
.LP
Quotation metacharacters
.DS
\e 1.7 prevents meta-meaning of following single character
\' 1.7 prevents meta-meaning of a group of characters
" 4.3 like \', but allows variable and command expansion
.DE
.LP
Input/output metacharacters
.DS
< 1.5 indicates redirected input
> 1.3 indicates redirected output
.DE
.LP
Expansion/substitution metacharacters
.DS
$ 3.4 indicates variable substitution
! 2.3 indicates history substitution
: 3.6 precedes substitution modifiers
^ 2.3 used in special forms of history substitution
\` 4.3 indicates command substitution
.DE
.LP
Other metacharacters
.DS
# 1.3,3.6 begins scratch file names; indicates shell comments
\- 1.2 prefixes option (flag) arguments to commands
% 2.6 prefixes job name specifications
.DE
.bp

1719
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.\" $NetBSD: tabs,v 1.4 2003/08/07 09:05:09 agc Exp $
.\"
.\" Copyright (c) 1980, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)tabs 8.1 (Berkeley) 6/8/93
.\"
.ta 5n 10n 15n 20n 25n 30n 35n 40n 45n 50n 55n 60n 65n 70n 75n 80n

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/* $NetBSD: alloc.c,v 1.13 2013/01/22 19:28:00 christos Exp $ */
/*-
* Copyright (c) 1983, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)alloc.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: alloc.c,v 1.13 2013/01/22 19:28:00 christos Exp $");
#endif
#endif /* not lint */
#include <sys/types.h>
#include <unistd.h>
#include <stdarg.h>
#include <stdlib.h>
#include "csh.h"
#include "extern.h"
ptr_t
Malloc(size_t n)
{
ptr_t ptr;
if ((ptr = malloc(n)) == (ptr_t) 0) {
child++;
stderror(ERR_NOMEM);
}
return (ptr);
}
ptr_t
Realloc(ptr_t p, size_t n)
{
ptr_t ptr;
if ((ptr = realloc(p, n)) == (ptr_t) 0) {
child++;
stderror(ERR_NOMEM);
}
return (ptr);
}
ptr_t
Calloc(size_t s, size_t n)
{
ptr_t ptr;
if ((ptr = calloc(s, n)) == (ptr_t) 0) {
child++;
stderror(ERR_NOMEM);
}
return (ptr);
}
void
Free(ptr_t p)
{
if (p)
free(p);
}

315
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/* $NetBSD: char.c,v 1.10 2012/01/19 02:42:53 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)char.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: char.c,v 1.10 2012/01/19 02:42:53 christos Exp $");
#endif
#endif /* not lint */
#include "char.h"
/* on default same as original map */
unsigned short _cmap[256] = {
/* 0 nul 1 soh 2 stx 3 etx */
_CTR, _CTR, _CTR, _CTR,
/* 4 eot 5 enq 6 ack 7 bel */
_CTR, _CTR, _CTR, _CTR,
/* 8 bs 9 ht 10 nl 11 vt */
_CTR, _CTR|_SP|_META, _CTR|_NL|_META, _CTR,
/* 12 np 13 cr 14 so 15 si */
_CTR, _CTR, _CTR, _CTR,
/* 16 dle 17 dc1 18 dc2 19 dc3 */
_CTR, _CTR, _CTR, _CTR,
/* 20 dc4 21 nak 22 syn 23 etb */
_CTR, _CTR, _CTR, _CTR,
/* 24 can 25 em 26 sub 27 esc */
_CTR, _CTR, _CTR, _CTR,
/* 28 fs 29 gs 30 rs 31 us */
_CTR, _CTR, _CTR, _CTR,
/* 32 sp 33 ! 34 " 35 # */
_SP|_META, _PUN, _QF|_PUN, _META|_PUN,
/* 36 $ 37 % 38 & 39 ' */
_DOL|_PUN, _PUN, _META|_CMD|_PUN,_QF|_PUN,
/* 40 ( 41 ) 42 * 43 + */
_META|_CMD|_PUN,_META|_PUN, _GLOB|_PUN, _PUN,
/* 44 , 45 - 46 . 47 / */
_PUN, _PUN, _PUN, _PUN,
/* 48 0 49 1 50 2 51 3 */
_DIG|_XD, _DIG|_XD, _DIG|_XD, _DIG|_XD,
/* 52 4 53 5 54 6 55 7 */
_DIG|_XD, _DIG|_XD, _DIG|_XD, _DIG|_XD,
/* 56 8 57 9 58 : 59 ; */
_DIG|_XD, _DIG|_XD, _PUN, _META|_CMD|_PUN,
/* 60 < 61 = 62 > 63 ? */
_META|_PUN, _PUN, _META|_PUN, _GLOB|_PUN,
/* 64 @ 65 A 66 B 67 C */
_PUN, _LET|_UP|_XD, _LET|_UP|_XD, _LET|_UP|_XD,
/* 68 D 69 E 70 F 71 G */
_LET|_UP|_XD, _LET|_UP|_XD, _LET|_UP|_XD, _LET|_UP,
/* 72 H 73 I 74 J 75 K */
_LET|_UP, _LET|_UP, _LET|_UP, _LET|_UP,
/* 76 L 77 M 78 N 79 O */
_LET|_UP, _LET|_UP, _LET|_UP, _LET|_UP,
/* 80 P 81 Q 82 R 83 S */
_LET|_UP, _LET|_UP, _LET|_UP, _LET|_UP,
/* 84 T 85 U 86 V 87 W */
_LET|_UP, _LET|_UP, _LET|_UP, _LET|_UP,
/* 88 X 89 Y 90 Z 91 [ */
_LET|_UP, _LET|_UP, _LET|_UP, _GLOB|_PUN,
/* 92 \ 93 ] 94 ^ 95 _ */
_ESC|_PUN, _PUN, _PUN, _PUN,
/* 96 ` 97 a 98 b 99 c */
_QB|_GLOB|_META|_PUN, _LET|_LOW|_XD, _LET|_LOW|_XD, _LET|_LOW|_XD,
/* 100 d 101 e 102 f 103 g */
_LET|_LOW|_XD, _LET|_LOW|_XD, _LET|_LOW|_XD, _LET|_LOW,
/* 104 h 105 i 106 j 107 k */
_LET|_LOW, _LET|_LOW, _LET|_LOW, _LET|_LOW,
/* 108 l 109 m 110 n 111 o */
_LET|_LOW, _LET|_LOW, _LET|_LOW, _LET|_LOW,
/* 112 p 113 q 114 r 115 s */
_LET|_LOW, _LET|_LOW, _LET|_LOW, _LET|_LOW,
/* 116 t 117 u 118 v 119 w */
_LET|_LOW, _LET|_LOW, _LET|_LOW, _LET|_LOW,
/* 120 x 121 y 122 z 123 { */
_LET|_LOW, _LET|_LOW, _LET|_LOW, _GLOB|_PUN,
/* 124 | 125 } 126 ~ 127 del */
_META|_CMD|_PUN,_PUN, _PUN, _CTR,
#ifdef SHORT_STRINGS
/****************************************************************/
/* 128 - 255 The below is supposedly ISO 8859/1 */
/****************************************************************/
/* 128 (undef) 129 (undef) 130 (undef) 131 (undef) */
_CTR, _CTR, _CTR, _CTR,
/* 132 (undef) 133 (undef) 134 (undef) 135 (undef) */
_CTR, _CTR, _CTR, _CTR,
/* 136 (undef) 137 (undef) 138 (undef) 139 (undef) */
_CTR, _CTR, _CTR, _CTR,
/* 140 (undef) 141 (undef) 142 (undef) 143 (undef) */
_CTR, _CTR, _CTR, _CTR,
/* 144 (undef) 145 (undef) 146 (undef) 147 (undef) */
_CTR, _CTR, _CTR, _CTR,
/* 148 (undef) 149 (undef) 150 (undef) 151 (undef) */
_CTR, _CTR, _CTR, _CTR,
/* 152 (undef) 153 (undef) 154 (undef) 155 (undef) */
_CTR, _CTR, _CTR, _CTR,
/* 156 (undef) 157 (undef) 158 (undef) 159 (undef) */
_CTR, _CTR, _CTR, _CTR,
/* 160 nobreakspace 161 exclamdown 162 cent 163 sterling */
_PUN, /* XXX */ _PUN, _PUN, _PUN,
/* 164 currency 165 yen 166 brokenbar 167 section */
_PUN, _PUN, _PUN, _PUN,
/* 168 diaeresis 169 copyright 170 ordfeminine 171 guillemotleft*/
_PUN, _PUN, _PUN, _PUN,
/* 172 notsign 173 hyphen 174 registered 175 macron */
_PUN, _PUN, _PUN, _PUN,
/* 176 degree 177 plusminus 178 twosuperior 179 threesuperior*/
_PUN, _PUN, _PUN, _PUN,
/* 180 acute 181 mu 182 paragraph 183 periodcentered*/
_PUN, _PUN, /*XXX*/ _PUN, _PUN,
/* 184 cedilla 185 onesuperior 186 masculine 187 guillemotright*/
_PUN, _PUN, _PUN, _PUN,
/* 188 onequarter 189 onehalf 190 threequarters 191 questiondown*/
_PUN, _PUN, _PUN, _PUN,
/* 192 Agrave 193 Aacute 194 Acircumflex 195 Atilde */
_LET|_UP, _LET|_UP, _LET|_UP, _LET|_UP,
/* 196 Adiaeresis 197 Aring 198 AE 199 Ccedilla */
_LET|_UP, _LET|_UP, _LET|_UP, _LET|_UP,
/* 200 Egrave 201 Eacute 202 Ecircumflex 203 Ediaeresis */
_LET|_UP, _LET|_UP, _LET|_UP, _LET|_UP,
/* 204 Igrave 205 Iacute 206 Icircumflex 207 Idiaeresis */
_LET|_UP, _LET|_UP, _LET|_UP, _LET|_UP,
/* 208 ETH 209 Ntilde 210 Ograve 211 Oacute */
_LET|_UP, _LET|_UP, _LET|_UP, _LET|_UP,
/* 212 Ocircumflex 213 Otilde 214 Odiaeresis 215 multiply */
_LET|_UP, _LET|_UP, _LET|_UP, _PUN,
/* 216 Ooblique 217 Ugrave 218 Uacute 219 Ucircumflex */
_LET|_UP, _LET|_UP, _LET|_UP, _LET|_UP,
/* 220 Udiaeresis 221 Yacute 222 THORN 223 ssharp */
_LET|_UP, _LET|_UP, _LET|_UP, _LET|_LOW,
/* 224 agrave 225 aacute 226 acircumflex 227 atilde */
_LET|_LOW, _LET|_LOW, _LET|_LOW, _LET|_LOW,
/* 228 adiaeresis 229 aring 230 ae 231 ccedilla */
_LET|_LOW, _LET|_LOW, _LET|_LOW, _LET|_LOW,
/* 232 egrave 233 eacute 234 ecircumflex 235 ediaeresis */
_LET|_LOW, _LET|_LOW, _LET|_LOW, _LET|_LOW,
/* 236 igrave 237 iacute 238 icircumflex 239 idiaeresis */
_LET|_LOW, _LET|_LOW, _LET|_LOW, _LET|_LOW,
/* 240 eth 241 ntilde 242 ograve 243 oacute */
_LET|_LOW, _LET|_LOW, _LET|_LOW, _LET|_LOW,
/* 244 ocircumflex 245 otilde 246 odiaeresis 247 division */
_LET|_LOW, _LET|_LOW, _LET|_LOW, _PUN,
/* 248 oslash 249 ugrave 250 uacute 251 ucircumflex */
_LET|_LOW, _LET|_LOW, _LET|_LOW, _LET|_LOW,
/* 252 udiaeresis 253 yacute 254 thorn 255 ydiaeresis */
_LET|_LOW, _LET|_LOW, _LET|_LOW, _LET|_LOW,
#endif /* SHORT_STRINGS */
};
#ifndef NLS
/* _cmap_lower, _cmap_upper for ISO 8859/1 */
unsigned char _cmap_lower[256] = {
0000, 0001, 0002, 0003, 0004, 0005, 0006, 0007,
0010, 0011, 0012, 0013, 0014, 0015, 0016, 0017,
0020, 0021, 0022, 0023, 0024, 0025, 0026, 0027,
0030, 0031, 0032, 0033, 0034, 0035, 0036, 0037,
0040, 0041, 0042, 0043, 0044, 0045, 0046, 0047,
0050, 0051, 0052, 0053, 0054, 0055, 0056, 0057,
0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067,
0070, 0071, 0072, 0073, 0074, 0075, 0076, 0077,
0100, 0141, 0142, 0143, 0144, 0145, 0146, 0147,
0150, 0151, 0152, 0153, 0154, 0155, 0156, 0157,
0160, 0161, 0162, 0163, 0164, 0165, 0166, 0167,
0170, 0171, 0172, 0133, 0134, 0135, 0136, 0137,
0140, 0141, 0142, 0143, 0144, 0145, 0146, 0147,
0150, 0151, 0152, 0153, 0154, 0155, 0156, 0157,
0160, 0161, 0162, 0163, 0164, 0165, 0166, 0167,
0170, 0171, 0172, 0173, 0174, 0175, 0176, 0177,
0200, 0201, 0202, 0203, 0204, 0205, 0206, 0207,
0210, 0211, 0212, 0213, 0214, 0215, 0216, 0217,
0220, 0221, 0222, 0223, 0224, 0225, 0226, 0227,
0230, 0231, 0232, 0233, 0234, 0235, 0236, 0237,
0240, 0241, 0242, 0243, 0244, 0245, 0246, 0247,
0250, 0251, 0252, 0253, 0254, 0255, 0256, 0257,
0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267,
0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277,
0340, 0341, 0342, 0343, 0344, 0345, 0346, 0347,
0350, 0351, 0352, 0353, 0354, 0355, 0356, 0357,
0360, 0361, 0362, 0363, 0364, 0365, 0366, 0327,
0370, 0371, 0372, 0373, 0374, 0375, 0376, 0337,
0340, 0341, 0342, 0343, 0344, 0345, 0346, 0347,
0350, 0351, 0352, 0353, 0354, 0355, 0356, 0357,
0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367,
0370, 0371, 0372, 0373, 0374, 0375, 0376, 0377,
};
unsigned char _cmap_upper[256] = {
0000, 0001, 0002, 0003, 0004, 0005, 0006, 0007,
0010, 0011, 0012, 0013, 0014, 0015, 0016, 0017,
0020, 0021, 0022, 0023, 0024, 0025, 0026, 0027,
0030, 0031, 0032, 0033, 0034, 0035, 0036, 0037,
0040, 0041, 0042, 0043, 0044, 0045, 0046, 0047,
0050, 0051, 0052, 0053, 0054, 0055, 0056, 0057,
0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067,
0070, 0071, 0072, 0073, 0074, 0075, 0076, 0077,
0100, 0101, 0102, 0103, 0104, 0105, 0106, 0107,
0110, 0111, 0112, 0113, 0114, 0115, 0116, 0117,
0120, 0121, 0122, 0123, 0124, 0125, 0126, 0127,
0130, 0131, 0132, 0133, 0134, 0135, 0136, 0137,
0140, 0101, 0102, 0103, 0104, 0105, 0106, 0107,
0110, 0111, 0112, 0113, 0114, 0115, 0116, 0117,
0120, 0121, 0122, 0123, 0124, 0125, 0126, 0127,
0130, 0131, 0132, 0173, 0174, 0175, 0176, 0177,
0200, 0201, 0202, 0203, 0204, 0205, 0206, 0207,
0210, 0211, 0212, 0213, 0214, 0215, 0216, 0217,
0220, 0221, 0222, 0223, 0224, 0225, 0226, 0227,
0230, 0231, 0232, 0233, 0234, 0235, 0236, 0237,
0240, 0241, 0242, 0243, 0244, 0245, 0246, 0247,
0250, 0251, 0252, 0253, 0254, 0255, 0256, 0257,
0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267,
0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277,
0300, 0301, 0302, 0303, 0304, 0305, 0306, 0307,
0310, 0311, 0312, 0313, 0314, 0315, 0316, 0317,
0320, 0321, 0322, 0323, 0324, 0325, 0326, 0327,
0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337,
0300, 0301, 0302, 0303, 0304, 0305, 0306, 0307,
0310, 0311, 0312, 0313, 0314, 0315, 0316, 0317,
0320, 0321, 0322, 0323, 0324, 0325, 0326, 0367,
0330, 0331, 0332, 0333, 0334, 0335, 0336, 0377,
};
#endif /* NLS */

100
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/* $NetBSD: char.h,v 1.9 2012/01/19 02:42:53 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)char.h 8.1 (Berkeley) 5/31/93
*/
#ifndef _CHAR_H_
#define _CHAR_H_
#include <ctype.h>
extern unsigned short _cmap[];
#ifndef NLS
extern unsigned char _cmap_lower[], _cmap_upper[];
#endif
#define _QF 0x0001 /* '" (Forward quotes) */
#define _QB 0x0002 /* ` (Backquote) */
#define _SP 0x0004 /* space and tab */
#define _NL 0x0008 /* \n */
#define _META 0x0010 /* lex meta characters, sp #'`";&<>()|\t\n */
#define _GLOB 0x0020 /* glob characters, *?{[` */
#define _ESC 0x0040 /* \ */
#define _DOL 0x0080 /* $ */
#define _DIG 0x0100 /* 0-9 */
#define _LET 0x0200 /* a-z, A-Z, _ */
#define _UP 0x0400 /* A-Z */
#define _LOW 0x0800 /* a-z */
#define _XD 0x1000 /* 0-9, a-f, A-F */
#define _CMD 0x2000 /* lex end of command chars, ;&(|` */
#define _CTR 0x4000 /* control */
#define _PUN 0x8000 /* punctuation */
#define cmap(c, bits) \
(((c) & QUOTE) ? 0 : (_cmap[(unsigned char)(c)] & (bits)))
#define isglob(c) cmap(c, _GLOB)
#define isspc(c) cmap(c, _SP)
#define ismeta(c) cmap(c, _META)
#define iscmdmeta(c) cmap(c, _CMD)
#define letter(c) (((c) & QUOTE) ? 0 : \
(isalpha((unsigned char) (c)) || (c) == '_'))
#define alnum(c) (((c) & QUOTE) ? 0 : \
(isalnum((unsigned char) (c)) || (c) == '_'))
#ifdef NLS
#define Isspace(c) (((c) & QUOTE) ? 0 : isspace((unsigned char) (c)))
#define Isdigit(c) (((c) & QUOTE) ? 0 : isdigit((unsigned char) (c)))
#define Isalpha(c) (((c) & QUOTE) ? 0 : isalpha((unsigned char) (c)))
#define Islower(c) (((c) & QUOTE) ? 0 : islower((unsigned char) (c)))
#define Isupper(c) (((c) & QUOTE) ? 0 : isupper((unsigned char) (c)))
#define Tolower(c) (((c) & QUOTE) ? 0 : tolower((unsigned char) (c)))
#define Toupper(c) (((c) & QUOTE) ? 0 : toupper((unsigned char) (c)))
#define Isxdigit(c) (((c) & QUOTE) ? 0 : isxdigit((unsigned char) (c)))
#define Isalnum(c) (((c) & QUOTE) ? 0 : isalnum((unsigned char) (c)))
#define Iscntrl(c) (((c) & QUOTE) ? 0 : iscntrl((unsigned char) (c)))
#define Isprint(c) (((c) & QUOTE) ? 0 : isprint((unsigned char) (c)))
#else
#define Isspace(c) cmap(c, _SP|_NL)
#define Isdigit(c) cmap(c, _DIG)
#define Isalpha(c) (cmap(c,_LET) && !(((c) & META) && AsciiOnly))
#define Islower(c) (cmap(c,_LOW) && !(((c) & META) && AsciiOnly))
#define Isupper(c) (cmap(c, _UP) && !(((c) & META) && AsciiOnly))
#define Tolower(c) (_cmap_lower[(unsigned char)(c)])
#define Toupper(c) (_cmap_upper[(unsigned char)(c)])
#define Isxdigit(c) cmap(c, _XD)
#define Isalnum(c) (cmap(c, _DIG|_LET) && !(((c) & META) && AsciiOnly))
#define Iscntrl(c) (cmap(c,_CTR) && !(((c) & META) && AsciiOnly))
#define Isprint(c) (!cmap(c,_CTR) && !(((c) & META) && AsciiOnly))
#endif
#endif /* !_CHAR_H_ */

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/* $NetBSD: const.c,v 1.10 2013/01/22 20:35:29 christos Exp $ */
/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)const.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: const.c,v 1.10 2013/01/22 20:35:29 christos Exp $");
#endif
#endif /* not lint */
/*
* tc.const.c: String constants for csh.
*/
#include "csh.h"
Char STR0[] = { '0', '\0' };
Char STR1[] = { '1', '\0' };
Char STRHOME[] = { 'H', 'O', 'M', 'E', '\0' };
Char STRLANG[] = { 'L', 'A', 'N', 'G', '\0' };
Char STRLC_CTYPE[] = { 'L', 'C', '_', 'C', 'T', 'Y', 'P', 'E' ,'\0' };
Char STRLOGNAME[] = { 'L', 'O', 'G', 'N', 'A', 'M', 'E', '\0' };
Char STRLbrace[] = { '{', '\0' };
Char STRLparen[] = { '(', '\0' };
Char STRLparensp[] = { '(', ' ', '\0' };
Char STRNULL[] = { '\0' };
Char STRPATH[] = { 'P', 'A', 'T', 'H', '\0' };
Char STRPWD[] = { 'P', 'W', 'D', '\0' };
Char STRQNULL[] = { '\0' | QUOTE, '\0' };
Char STRRbrace[] = { '}', '\0' };
Char STRspRparen[] = { ' ', ')', '\0' };
Char STRTERM[] = { 'T', 'E', 'R', 'M', '\0' };
Char STRUSER[] = { 'U', 'S', 'E', 'R', '\0' };
Char STRalias[] = { 'a', 'l', 'i', 'a', 's', '\0' };
Char STRand[] = { '&', '\0' };
Char STRand2[] = { '&', '&', '\0' };
Char STRaout[] = { 'a', '.', 'o', 'u', 't', '\0' };
Char STRargv[] = { 'a', 'r', 'g', 'v', '\0' };
Char STRbang[] = { '!', '\0' };
Char STRcaret[] = { '^', '\0' };
Char STRcdpath[] = { 'c', 'd', 'p', 'a', 't', 'h', '\0' };
Char STRcent2[] = { '%', '%', '\0' };
Char STRcenthash[] = { '%', '#', '\0' };
Char STRcentplus[] = { '%', '+', '\0' };
Char STRcentminus[] = { '%', '-', '\0' };
Char STRchase_symlinks[] = { 'c', 'h', 'a', 's', 'e', '_', 's', 'y', 'm', 'l',
'i', 'n', 'k', 's', '\0' };
Char STRchild[] = { 'c', 'h', 'i', 'l', 'd', '\0' };
Char STRcolon[] = { ':', '\0' };
Char STRcwd[] = { 'c', 'w', 'd', '\0' };
Char STRdefault[] = { 'd', 'e', 'f', 'a', 'u', 'l', 't', '\0' };
Char STRdot[] = { '.', '\0' };
Char STRdotdotsl[] = { '.', '.', '/', '\0' };
Char STRdotsl[] = { '.', '/', '\0' };
Char STRecho[] = { 'e', 'c', 'h', 'o', '\0' };
Char STRedit[] = { 'e', 'd', 'i', 't', '\0' };
Char STRequal[] = { '=', '\0' };
Char STRfakecom[] = { '{', ' ', '.', '.', '.', ' ', '}', '\0' };
Char STRfakecom1[] = { '`', ' ', '.', '.', '.', ' ', '`', '\0' };
Char STRfignore[] = { 'f', 'i', 'g', 'n', 'o', 'r', 'e', '\0' };
#ifdef FILEC
Char STRfilec[] = { 'f', 'i', 'l', 'e', 'c', '\0' };
#endif /* FILEC */
Char STRhistchars[] = { 'h', 'i', 's', 't', 'c', 'h', 'a', 'r', 's', '\0' };
Char STRtildothist[] = { '~', '/', '.', 'h', 'i', 's', 't', 'o', 'r',
'y', '\0' };
Char STRhistfile[] = { 'h', 'i', 's', 't', 'f', 'i', 'l', 'e', '\0' };
Char STRhistory[] = { 'h', 'i', 's', 't', 'o', 'r', 'y', '\0' };
Char STRhome[] = { 'h', 'o', 'm', 'e', '\0' };
Char STRignore_symlinks[] = { 'i', 'g', 'n', 'o', 'r', 'e', '_', 's', 'y', 'm',
'l', 'i', 'n', 'k', 's', '\0' };
Char STRignoreeof[] = { 'i', 'g', 'n', 'o', 'r', 'e', 'e', 'o', 'f', '\0' };
Char STRjobs[] = { 'j', 'o', 'b', 's', '\0' };
Char STRlistjobs[] = { 'l', 'i', 's', 't', 'j', 'o', 'b', 's', '\0' };
Char STRlogout[] = { 'l', 'o', 'g', 'o', 'u', 't', '\0' };
Char STRlong[] = { 'l', 'o', 'n', 'g', '\0' };
Char STRmail[] = { 'm', 'a', 'i', 'l', '\0' };
Char STRmh[] = { '-', 'h', '\0' };
Char STRminus[] = { '-', '\0' };
Char STRml[] = { '-', 'l', '\0' };
Char STRmn[] = { '-', 'n', '\0' };
Char STRmquestion[] = { '?' | QUOTE, ' ', '\0' };
Char STRnice[] = { 'n', 'i', 'c', 'e', '\0' };
Char STRnoambiguous[] = { 'n', 'o', 'a', 'm', 'b', 'i', 'g', 'u', 'o', 'u',
's', '\0' };
Char STRnobeep[] = { 'n', 'o', 'b', 'e', 'e', 'p', '\0' };
Char STRnoclobber[] = { 'n', 'o', 'c', 'l', 'o', 'b', 'b', 'e', 'r', '\0' };
Char STRnoglob[] = { 'n', 'o', 'g', 'l', 'o', 'b', '\0' };
Char STRnohup[] = { 'n', 'o', 'h', 'u', 'p', '\0' };
Char STRnonomatch[] = { 'n', 'o', 'n', 'o', 'm', 'a', 't', 'c', 'h', '\0' };
Char STRnormal[] = { 'n', 'o', 'r', 'm', 'a', 'l', '\0' };
Char STRnotify[] = { 'n', 'o', 't', 'i', 'f', 'y', '\0' };
Char STRor[] = { '|', '\0' };
Char STRor2[] = { '|', '|', '\0' };
Char STRpath[] = { 'p', 'a', 't', 'h', '\0' };
Char STRprintexitvalue[] = { 'p', 'r', 'i', 'n', 't', 'e', 'x', 'i', 't', 'v',
'a', 'l', 'u', 'e', '\0' };
Char STRprompt[] = { 'p', 'r', 'o', 'm', 'p', 't', '\0' };
Char STRprompt2[] = { 'p', 'r', 'o', 'm', 'p', 't', '2', '\0' };
Char STRpushdsilent[] = { 'p', 'u', 's', 'h', 'd', 's', 'i', 'l', 'e', 'n',
't', '\0' };
Char STRret[] = { '\n', '\0' };
Char STRsavehist[] = { 's', 'a', 'v', 'e', 'h', 'i', 's', 't', '\0' };
Char STRsemisp[] = { ';', ' ', '\0' };
Char STRshell[] = { 's', 'h', 'e', 'l', 'l', '\0' };
Char STRslash[] = { '/', '\0' };
Char STRsldotcshrc[] = { '/', '.', 'c', 's', 'h', 'r', 'c', '\0' };
Char STRsldotlogin[] = { '/', '.', 'l', 'o', 'g', 'i', 'n', '\0' };
Char STRsldthist[] = { '/', '.', 'h', 'i', 's', 't', 'o', 'r', 'y', '\0' };
Char STRsldtlogout[] = { '/', '.', 'l', 'o', 'g', 'o', 'u', 't', '\0' };
Char STRsource[] = { 's', 'o', 'u', 'r', 'c', 'e', '\0' };
Char STRsp3dots[] = { ' ', '.', '.', '.', '\0' };
Char STRspLarrow2sp[] = { ' ', '<', '<', ' ', '\0' };
Char STRspLarrowsp[] = { ' ', '<', ' ', '\0' };
Char STRspRarrow[] = { ' ', '>', '\0' };
Char STRspRarrow2[] = { ' ', '>', '>', '\0' };
Char STRRparen[] = { ')', '\0' };
Char STRspace[] = { ' ', '\0' };
Char STRspand2sp[] = { ' ', '&', '&', ' ', '\0' };
Char STRspor2sp[] = { ' ', '|', '|', ' ', '\0' };
Char STRsporsp[] = { ' ', '|', ' ', '\0' };
Char STRstar[] = { '*', '\0' };
Char STRstatus[] = { 's', 't', 'a', 't', 'u', 's', '\0' };
Char STRsymcent[] = { '%', ' ', '\0' };
Char STRsymhash[] = { '#', ' ', '\0' };
Char STRterm[] = { 't', 'e', 'r', 'm', '\0' };
Char STRthen[] = { 't', 'h', 'e', 'n', '\0' };
Char STRtilde[] = { '~', '\0' };
Char STRtime[] = { 't', 'i', 'm', 'e', '\0' };
Char STRtmpsh[] = { '/', 't', 'm', 'p', '/', 's', 'h', '\0' };
Char STRunalias[] = { 'u', 'n', 'a', 'l', 'i', 'a', 's', '\0' };
Char STRuser[] = { 'u', 's', 'e', 'r', '\0' };
Char STRverbose[] = { 'v', 'e', 'r', 'b', 'o', 's', 'e', '\0' };
Char STRwordchars[] = { 'w', 'o', 'r', 'd', 'c', 'h', 'a', 'r', 's', '\0' };

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/* $NetBSD: csh.h,v 1.26 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)csh.h 8.1 (Berkeley) 5/31/93
*/
#ifndef _CSH_H_
#define _CSH_H_
/*
* Fundamental definitions which may vary from system to system.
*
* BUFSIZE The i/o buffering size; also limits word size
* MAILINTVL How often to mailcheck; more often is more expensive
*/
#ifndef BUFSIZE
#define BUFSIZE 4096 /* default buffer size */
#endif /* BUFSIZE */
#define FORKSLEEP 10 /* delay loop on non-interactive fork failure */
#define MAILINTVL 600 /* 10 minutes */
/*
* The shell moves std in/out/diag and the old std input away from units
* 0, 1, and 2 so that it is easy to set up these standards for invoked
* commands.
*/
#define FSHTTY 15 /* /dev/tty when manip pgrps */
#define FSHIN 16 /* Preferred desc for shell input */
#define FSHOUT 17 /* ... shell output */
#define FSHERR 18 /* ... shell diagnostics */
#define FOLDSTD 19 /* ... old std input */
#ifdef PROF
#define xexit(n) done(n)
#endif
#ifdef SHORT_STRINGS
typedef short Char;
#define SAVE(a) (Strsave(str2short(a)))
#else
typedef char Char;
#define SAVE(a) (strsave(a))
#endif
/*
* Make sure a variable is not stored in a register by taking its address
* This is used where variables might be clobbered by longjmp.
*/
#define UNREGISTER(a) (void) &a
typedef void *ioctl_t; /* Third arg of ioctl */
typedef void *ptr_t;
#include "const.h"
#include "char.h"
#include "errnum.h"
#define xmalloc(i) Malloc(i)
#define xrealloc(p, i) Realloc(p, i)
#define xcalloc(n, s) Calloc(n, s)
#define xfree(p) Free(p)
#include <stdio.h>
FILE *cshin, *cshout, *csherr;
#define isdir(d) (S_ISDIR(d.st_mode))
#define eq(a, b) (Strcmp(a, b) == 0)
/* globone() flags */
#define G_ERROR 0 /* default action: error if multiple words */
#define G_IGNORE 1 /* ignore the rest of the words */
#define G_APPEND 2 /* make a sentence by cat'ing the words */
/*
* Global flags
*/
int child; /* Child shell ... errors cause exit */
int chkstop; /* Warned of stopped jobs... allow exit */
int didfds; /* Have setup i/o fd's for child */
int doneinp; /* EOF indicator after reset from readc */
int exiterr; /* Exit if error or non-zero exit status */
int haderr; /* Reset was because of an error */
int havhash; /* path hashing is available */
int intact; /* We are interactive... therefore prompt */
int intty; /* Input is a tty */
int justpr; /* Just print because of :p hist mod */
int loginsh; /* We are a loginsh -> .login/.logout */
int neednote; /* Need to pnotify() */
int noexec; /* Don't execute, just syntax check */
int pjobs; /* want to print jobs if interrupted */
int setintr; /* Set interrupts on/off -> Wait intr... */
int timflg; /* Time the next waited for command */
#ifdef FILEC
extern int filec; /* doing filename expansion */
#endif
/*
* Global i/o info
*/
Char *arginp; /* Argument input for sh -c and internal `xx` */
Char *ffile; /* Name of shell file for $0 */
int onelflg; /* 2 -> need line for -t, 1 -> exit on read */
extern char *seterr; /* Error message from scanner/parser */
Char *shtemp; /* Temp name for << shell files in /tmp */
#include <sys/resource.h>
#include <sys/time.h>
#include <sys/types.h>
struct timespec time0; /* Time at which the shell started */
struct rusage ru0;
/*
* Miscellany
*/
time_t chktim; /* Time mail last checked */
Char *doldol; /* Character pid for $$ */
pid_t backpid; /* Pid of the last background process */
gid_t egid, gid; /* Invokers gid */
uid_t euid, uid; /* Invokers uid */
int shpgrp; /* Pgrp of shell */
int tpgrp; /* Terminal process group */
/* If tpgrp is -1, leave tty alone! */
int opgrp; /* Initial pgrp and tty pgrp */
/*
* To be able to redirect i/o for builtins easily, the shell moves the i/o
* descriptors it uses away from 0,1,2.
* Ideally these should be in units which are closed across exec's
* (this saves work) but for version 6, this is not usually possible.
* The desired initial values for these descriptors are F{SHIN,...}.
*/
int SHIN; /* Current shell input (script) */
int SHOUT; /* Shell output */
int SHERR; /* Diagnostic output... shell errs go here */
int OLDSTD; /* Old standard input (def for cmds) */
/*
* Error control
*
* Errors in scanning and parsing set up an error message to be printed
* at the end and complete. Other errors always cause a reset.
* Because of source commands and .cshrc we need nested error catches.
*/
#include <setjmp.h>
jmp_buf reslab;
#define setexit() (setjmp(reslab))
#define reset() longjmp(reslab, 1)
/* Should use structure assignment here */
#define getexit(a) (void)memcpy((a), reslab, sizeof reslab)
#define resexit(a) (void)memcpy(reslab, (a), sizeof reslab)
Char *gointr; /* Label for an onintr transfer */
#include <signal.h>
sig_t parintr; /* Parents interrupt catch */
sig_t parterm; /* Parents terminate catch */
/*
* Lexical definitions.
*
* All lexical space is allocated dynamically.
* The eighth/sixteenth bit of characters is used to prevent recognition,
* and eventually stripped.
*/
#define META 0x80
#define ASCII 0x7f
#ifdef SHORT_STRINGS
#define CHAR ((Char)0xff)
#define QUOTE ((Char)0x8000) /* 16nth char bit used for 'ing */
#define TRIM ((Char)0x7fff) /* Mask to strip quote bit */
#else
#define CHAR ((Char)0x7f)
#define QUOTE ((Char)0x80) /* Eighth char bit used for 'ing */
#define TRIM ((Char)0x7f) /* Mask to strip quote bit */
#endif
int AsciiOnly; /* If set only 7 bits is expected in characters */
/*
* Each level of input has a buffered input structure.
* There are one or more blocks of buffered input for each level,
* exactly one if the input is seekable and tell is available.
* In other cases, the shell buffers enough blocks to keep all loops
* in the buffer.
*/
struct Bin {
off_t Bfseekp; /* Seek pointer */
off_t Bfbobp; /* Seekp of beginning of buffers */
off_t Bfeobp; /* Seekp of end of buffers */
int Bfblocks; /* Number of buffer blocks */
Char **Bfbuf; /* The array of buffer blocks */
} B;
/*
* This structure allows us to seek inside aliases
*/
struct Ain {
int type;
#define I_SEEK -1 /* Invalid seek */
#define A_SEEK 0 /* Alias seek */
#define F_SEEK 1 /* File seek */
#define E_SEEK 2 /* Eval seek */
union {
off_t _f_seek;
Char* _c_seek;
} fc;
#define f_seek fc._f_seek
#define c_seek fc._c_seek
Char **a_seek;
} ;
extern int aret; /* What was the last character returned */
#define SEEKEQ(a, b) ((a)->type == (b)->type && \
(a)->f_seek == (b)->f_seek && \
(a)->a_seek == (b)->a_seek)
#define fseekp B.Bfseekp
#define fbobp B.Bfbobp
#define feobp B.Bfeobp
#define fblocks B.Bfblocks
#define fbuf B.Bfbuf
/*
* The shell finds commands in loops by reseeking the input
* For whiles, in particular, it reseeks to the beginning of the
* line the while was on; hence the while placement restrictions.
*/
struct Ain lineloc;
int cantell; /* Is current source tellable ? */
/*
* Input lines are parsed into doubly linked circular
* lists of words of the following form.
*/
struct wordent {
Char *word;
struct wordent *prev;
struct wordent *next;
};
/*
* During word building, both in the initial lexical phase and
* when expanding $ variable substitutions, expansion by `!' and `$'
* must be inhibited when reading ahead in routines which are themselves
* processing `!' and `$' expansion or after characters such as `\' or in
* quotations. The following flags are passed to the getC routines
* telling them which of these substitutions are appropriate for the
* next character to be returned.
*/
#define DODOL 1
#define DOEXCL 2
#define DOALL DODOL|DOEXCL
/*
* Labuf implements a general buffer for lookahead during lexical operations.
* Text which is to be placed in the input stream can be stuck here.
* We stick parsed ahead $ constructs during initial input,
* process id's from `$$', and modified variable values (from qualifiers
* during expansion in sh.dol.c) here.
*/
Char *lap;
/*
* Parser structure
*
* Each command is parsed to a tree of command structures and
* flags are set bottom up during this process, to be propagated down
* as needed during the semantics/execution pass (sh.sem.c).
*/
struct command {
int t_dtyp; /* Type of node */
#define NODE_COMMAND 1 /* t_dcom <t_dlef >t_drit */
#define NODE_PAREN 2 /* ( t_dspr ) <t_dlef >t_drit */
#define NODE_PIPE 3 /* t_dlef | t_drit */
#define NODE_LIST 4 /* t_dlef ; t_drit */
#define NODE_OR 5 /* t_dlef || t_drit */
#define NODE_AND 6 /* t_dlef && t_drit */
int t_dflg; /* Flags, e.g. F_AMPERSAND|... */
#define F_SAVE (F_NICE|F_TIME|F_NOHUP) /* save these when re-doing */
#define F_AMPERSAND (1<<0) /* executes in background */
#define F_APPEND (1<<1) /* output is redirected >> */
#define F_PIPEIN (1<<2) /* input is a pipe */
#define F_PIPEOUT (1<<3) /* output is a pipe */
#define F_NOFORK (1<<4) /* don't fork, last ()ized cmd */
#define F_NOINTERRUPT (1<<5) /* should be immune from intr's */
/* spare */
#define F_STDERR (1<<7) /* redirect unit 2 with unit 1 */
#define F_OVERWRITE (1<<8) /* output was ! */
#define F_READ (1<<9) /* input redirection is << */
#define F_REPEAT (1<<10) /* reexec aft if, repeat,... */
#define F_NICE (1<<11) /* t_nice is meaningful */
#define F_NOHUP (1<<12) /* nohup this command */
#define F_TIME (1<<13) /* time this command */
union {
Char *T_dlef; /* Input redirect word */
struct command *T_dcar; /* Left part of list/pipe */
} L;
union {
Char *T_drit; /* Output redirect word */
struct command *T_dcdr; /* Right part of list/pipe */
} R;
#define t_dlef L.T_dlef
#define t_dcar L.T_dcar
#define t_drit R.T_drit
#define t_dcdr R.T_dcdr
Char **t_dcom; /* Command/argument vector */
struct command *t_dspr; /* Pointer to ()'d subtree */
int t_nice;
};
/*
* These are declared here because they want to be
* initialized in sh.init.c (to allow them to be made readonly)
*/
extern struct biltins {
const char *bname;
void (*bfunct)(Char **, struct command *);
short minargs, maxargs;
} bfunc[];
extern int nbfunc;
extern int nsrchn;
extern struct srch {
const char *s_name;
short s_value;
} srchn[];
/*
* The keywords for the parser
*/
#define T_BREAK 0
#define T_BRKSW 1
#define T_CASE 2
#define T_DEFAULT 3
#define T_ELSE 4
#define T_END 5
#define T_ENDIF 6
#define T_ENDSW 7
#define T_EXIT 8
#define T_FOREACH 9
#define T_GOTO 10
#define T_IF 11
#define T_LABEL 12
#define T_LET 13
#define T_SET 14
#define T_SWITCH 15
#define T_TEST 16
#define T_THEN 17
#define T_WHILE 18
/*
* Structure defining the existing while/foreach loops at this
* source level. Loops are implemented by seeking back in the
* input. For foreach (fe), the word list is attached here.
*/
struct whyle {
struct Ain w_start; /* Point to restart loop */
struct Ain w_end; /* End of loop (0 if unknown) */
Char **w_fe, **w_fe0; /* Current/initial wordlist for fe */
Char *w_fename; /* Name for fe */
struct whyle *w_next; /* Next (more outer) loop */
} *whyles;
/*
* Variable structure
*
* Aliases and variables are stored in AVL balanced binary trees.
*/
struct varent {
Char **vec; /* Array of words which is the value */
Char *v_name; /* Name of variable/alias */
struct varent *v_link[3]; /* The links, see below */
int v_bal; /* Balance factor */
} shvhed, aliases;
#define v_left v_link[0]
#define v_right v_link[1]
#define v_parent v_link[2]
#define adrof(v) adrof1(v, &shvhed)
#define value(v) value1(v, &shvhed)
/*
* The following are for interfacing redo substitution in
* aliases to the lexical routines.
*/
struct wordent *alhistp; /* Argument list (first) */
struct wordent *alhistt; /* Node after last in arg list */
extern Char **alvec, *alvecp; /* The (remnants of) alias vector */
/*
* Filename/command name expansion variables
*/
int gflag; /* After tglob -> is globbing needed? */
#define MAXVARLEN 30 /* Maximum number of char in a variable name */
/*
* Variables for filename expansion
*/
extern long gargc; /* Number args in gargv */
extern Char **gargv; /* Pointer to the (stack) arglist */
/*
* Variables for command expansion.
*/
extern Char **pargv; /* Pointer to the argv list space */
extern long pargc; /* Count of arguments in pargv */
long pnleft; /* Number of chars left in pargs */
Char *pargs; /* Pointer to start current word */
Char *pargcp; /* Current index into pargs */
/*
* History list
*
* Each history list entry contains an embedded wordlist
* from the scanner, a number for the event, and a reference count
* to aid in discarding old entries.
*
* Essentially "invisible" entries are put on the history list
* when history substitution includes modifiers, and thrown away
* at the next discarding since their event numbers are very negative.
*/
struct Hist {
struct wordent Hlex;
int Hnum;
int Href;
struct Hist *Hnext;
} Histlist;
struct wordent paraml; /* Current lexical word list */
int eventno; /* Next events number */
int lastev; /* Last event reference (default) */
Char HIST; /* history invocation character */
Char HISTSUB; /* auto-substitute character */
/*
* strings.h:
*/
#ifndef SHORT_STRINGS
#define Strchr(a, b) strchr(a, b)
#define Strrchr(a, b) strrchr(a, b)
#define Strcat(a, b) strcat(a, b)
#define Strncat(a, b, c) strncat(a, b, c)
#define Strcpy(a, b) strcpy(a, b)
#define Strncpy(a, b, c) strncpy(a, b, c)
#define Strlen(a) strlen(a)
#define Strcmp(a, b) strcmp(a, b)
#define Strncmp(a, b, c) strncmp(a, b, c)
#define Strspl(a, b) strspl(a, b)
#define Strsave(a) strsave(a)
#define Strend(a) strend(a)
#define Strstr(a, b) strstr(a, b)
#define str2short(a) (a)
#define blk2short(a) saveblk(a)
#define short2blk(a) saveblk(a)
#define short2str(a) strip(a)
#else
#define Strchr(a, b) s_strchr(a, b)
#define Strrchr(a, b) s_strrchr(a, b)
#define Strcat(a, b) s_strcat(a, b)
#define Strncat(a, b, c) s_strncat(a, b, c)
#define Strcpy(a, b) s_strcpy(a, b)
#define Strncpy(a, b, c) s_strncpy(a, b, c)
#define Strlen(a) s_strlen(a)
#define Strcmp(a, b) s_strcmp(a, b)
#define Strncmp(a, b, c) s_strncmp(a, b, c)
#define Strspl(a, b) s_strspl(a, b)
#define Strsave(a) s_strsave(a)
#define Strend(a) s_strend(a)
#define Strstr(a, b) s_strstr(a, b)
#endif
/*
* setname is a macro to save space (see sh.err.c)
*/
const char *bname;
#define setname(a) (bname = (a))
Char *Vsav;
Char *Vdp;
Char *Vexpath;
char **Vt;
Char **evalvec;
Char *evalp;
/* word_chars is set by default to WORD_CHARS but can be overridden by
the worchars variable--if unset, reverts to WORD_CHARS */
Char *word_chars;
#define WORD_CHARS "*?_-.[]~=" /* default chars besides alnums in words */
Char *STR_SHELLPATH;
#include <paths.h>
#ifdef _PATH_BSHELL
Char *STR_BSHELL;
#endif
Char *STR_WORD_CHARS;
Char **STR_environ;
#ifdef EDIT
#include <histedit.h>
EditLine *el;
History *hi;
#endif
int editing;
#endif /* !_CSH_H_ */

901
bin/csh/dir.c Normal file
View file

@ -0,0 +1,901 @@
/* $NetBSD: dir.c,v 1.30 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)dir.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: dir.c,v 1.30 2013/07/16 17:47:43 christos Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "csh.h"
#include "dir.h"
#include "extern.h"
/* Directory management. */
static struct directory *dfind(Char *);
static Char *dfollow(Char *);
static void printdirs(void);
static Char *dgoto(Char *);
static void skipargs(Char ***, const char *);
static void dnewcwd(struct directory *);
static void dset(Char *);
struct directory dhead; /* "head" of loop */
int printd; /* force name to be printed */
static int dirflag = 0;
/*
* dinit - initialize current working directory
*/
void
dinit(Char *hp)
{
static const char emsg[] = "csh: Trying to start from \"%s\"\n";
char path[MAXPATHLEN];
struct directory *dp;
const char *ecp;
Char *cp;
/* Don't believe the login shell home, because it may be a symlink */
ecp = getcwd(path, MAXPATHLEN);
if (ecp == NULL || *ecp == '\0') {
(void)fprintf(csherr, "csh: %s\n", strerror(errno));
if (hp && *hp) {
ecp = short2str(hp);
if (chdir(ecp) == -1)
cp = NULL;
else
cp = Strsave(hp);
(void)fprintf(csherr, emsg, vis_str(hp));
}
else
cp = NULL;
if (cp == NULL) {
(void)fprintf(csherr, emsg, "/");
if (chdir("/") == -1) {
/* I am not even try to print an error message! */
xexit(1);
}
cp = SAVE("/");
}
}
else {
struct stat swd, shp;
/*
* See if $HOME is the working directory we got and use that
*/
if (hp && *hp &&
stat(ecp, &swd) != -1 && stat(short2str(hp), &shp) != -1 &&
swd.st_dev == shp.st_dev && swd.st_ino == shp.st_ino)
cp = Strsave(hp);
else {
const char *cwd;
/*
* use PWD if we have it (for subshells)
*/
if ((cwd = getenv("PWD")) != NULL) {
if (stat(cwd, &shp) != -1 && swd.st_dev == shp.st_dev &&
swd.st_ino == shp.st_ino)
ecp = cwd;
}
cp = dcanon(SAVE(ecp), STRNULL);
}
}
dp = (struct directory *)xcalloc(1, sizeof(struct directory));
dp->di_name = cp;
dp->di_count = 0;
dhead.di_next = dhead.di_prev = dp;
dp->di_next = dp->di_prev = &dhead;
printd = 0;
dnewcwd(dp);
}
static void
dset(Char *dp)
{
Char **vec;
/*
* Don't call set() directly cause if the directory contains ` or
* other junk characters glob will fail.
*/
vec = xmalloc((size_t)(2 * sizeof(Char **)));
vec[0] = Strsave(dp);
vec[1] = 0;
setq(STRcwd, vec, &shvhed);
Setenv(STRPWD, dp);
}
#define DIR_LONG 1
#define DIR_VERT 2
#define DIR_LINE 4
static void
skipargs(Char ***v, const char *str)
{
Char **n, *s;
n = *v;
dirflag = 0;
for (n++; *n != NULL && (*n)[0] == '-'; n++)
for (s = &((*n)[1]); *s; s++)
switch (*s) {
case 'l':
dirflag |= DIR_LONG;
break;
case 'n':
dirflag |= DIR_LINE;
break;
case 'v':
dirflag |= DIR_VERT;
break;
default:
stderror(ERR_DIRUS, vis_str(**v), str);
/* NOTREACHED */
}
*v = n;
}
/*
* dodirs - list all directories in directory loop
*/
void
/*ARGSUSED*/
dodirs(Char **v, struct command *t)
{
skipargs(&v, "");
if (*v != NULL)
stderror(ERR_DIRUS, "dirs", "");
printdirs();
}
static void
printdirs(void)
{
struct directory *dp;
Char *hp, *s;
size_t cur, idx, len;
hp = value(STRhome);
if (*hp == '\0')
hp = NULL;
dp = dcwd;
idx = 0;
cur = 0;
do {
if (dp == &dhead)
continue;
if (dirflag & DIR_VERT) {
(void)fprintf(cshout, "%zu\t", idx++);
cur = 0;
}
if (!(dirflag & DIR_LONG) && hp != NULL && !eq(hp, STRslash) &&
(len = Strlen(hp), Strncmp(hp, dp->di_name, len) == 0) &&
(dp->di_name[len] == '\0' || dp->di_name[len] == '/'))
len = Strlen(s = (dp->di_name + len)) + 2;
else
len = Strlen(s = dp->di_name) + 1;
cur += len;
if ((dirflag & DIR_LINE) && cur >= 80 - 1 && len < 80) {
(void)fprintf(cshout, "\n");
cur = len;
}
(void) fprintf(cshout, "%s%s%c", (s != dp->di_name)? "~" : "",
vis_str(s), (dirflag & DIR_VERT) ? '\n' : ' ');
} while ((dp = dp->di_prev) != dcwd);
if (!(dirflag & DIR_VERT))
(void)fprintf(cshout, "\n");
}
void
dtildepr(Char *home, Char *dir)
{
if (!eq(home, STRslash) && prefix(home, dir))
(void)fprintf(cshout, "~%s", vis_str(dir + Strlen(home)));
else
(void)fprintf(cshout, "%s", vis_str(dir));
}
void
dtilde(void)
{
struct directory *d;
d = dcwd;
do {
if (d == &dhead)
continue;
d->di_name = dcanon(d->di_name, STRNULL);
} while ((d = d->di_prev) != dcwd);
dset(dcwd->di_name);
}
/* dnormalize():
* If the name starts with . or .. then we might need to normalize
* it depending on the symbolic link flags
*/
Char *
dnormalize(Char *cp)
{
#define UC (unsigned char)
#define ISDOT(c) (UC(c)[0] == '.' && ((UC(c)[1] == '\0') || (UC(c)[1] == '/')))
#define ISDOTDOT(c) (UC(c)[0] == '.' && ISDOT(&((c)[1])))
if ((unsigned char) cp[0] == '/')
return (Strsave(cp));
if (adrof(STRignore_symlinks)) {
size_t dotdot = 0;
Char *dp, *cwd;
cwd = xmalloc((size_t)((Strlen(dcwd->di_name) + 3) *
sizeof(Char)));
(void)Strcpy(cwd, dcwd->di_name);
/*
* Ignore . and count ..'s
*/
while (*cp) {
if (ISDOT(cp)) {
if (*++cp)
cp++;
}
else if (ISDOTDOT(cp)) {
dotdot++;
cp += 2;
if (*cp)
cp++;
}
else
break;
}
while (dotdot > 0) {
dp = Strrchr(cwd, '/');
if (dp) {
*dp = '\0';
dotdot--;
}
else
break;
}
if (*cp) {
cwd[dotdot = Strlen(cwd)] = '/';
cwd[dotdot + 1] = '\0';
dp = Strspl(cwd, cp);
xfree((ptr_t) cwd);
return dp;
}
else {
if (!*cwd) {
cwd[0] = '/';
cwd[1] = '\0';
}
return cwd;
}
}
return Strsave(cp);
}
/*
* dochngd - implement chdir command.
*/
void
/*ARGSUSED*/
dochngd(Char **v, struct command *t)
{
struct directory *dp;
Char *cp;
skipargs(&v, " [<dir>]");
printd = 0;
if (*v == NULL) {
if ((cp = value(STRhome)) == NULL || *cp == 0)
stderror(ERR_NAME | ERR_NOHOMEDIR);
if (chdir(short2str(cp)) < 0)
stderror(ERR_NAME | ERR_CANTCHANGE);
cp = Strsave(cp);
}
else if (v[1] != NULL)
stderror(ERR_NAME | ERR_TOOMANY);
else if ((dp = dfind(*v)) != 0) {
char *tmp;
printd = 1;
if (chdir(tmp = short2str(dp->di_name)) < 0)
stderror(ERR_SYSTEM, tmp, strerror(errno));
dcwd->di_prev->di_next = dcwd->di_next;
dcwd->di_next->di_prev = dcwd->di_prev;
dfree(dcwd);
dnewcwd(dp);
return;
}
else
cp = dfollow(*v);
dp = (struct directory *)xcalloc(1, sizeof(struct directory));
dp->di_name = cp;
dp->di_count = 0;
dp->di_next = dcwd->di_next;
dp->di_prev = dcwd->di_prev;
dp->di_prev->di_next = dp;
dp->di_next->di_prev = dp;
dfree(dcwd);
dnewcwd(dp);
}
static Char *
dgoto(Char *cp)
{
Char *dp;
if (*cp != '/') {
Char *p, *q;
size_t cwdlen;
for (p = dcwd->di_name; *p++;)
continue;
if ((cwdlen = (size_t)(p - dcwd->di_name - 1)) == 1) /* root */
cwdlen = 0;
for (p = cp; *p++;)
continue;
dp = xmalloc((size_t)(cwdlen + (size_t)(p - cp) + 1) * sizeof(Char));
for (p = dp, q = dcwd->di_name; (*p++ = *q++) != '\0';)
continue;
if (cwdlen)
p[-1] = '/';
else
p--; /* don't add a / after root */
for (q = cp; (*p++ = *q++) != '\0';)
continue;
xfree((ptr_t) cp);
cp = dp;
dp += cwdlen;
}
else
dp = cp;
cp = dcanon(cp, dp);
return cp;
}
/*
* dfollow - change to arg directory; fall back on cdpath if not valid
*/
static Char *
dfollow(Char *cp)
{
char ebuf[MAXPATHLEN];
struct varent *c;
Char *dp;
int serrno;
cp = globone(cp, G_ERROR);
/*
* if we are ignoring symlinks, try to fix relatives now.
*/
dp = dnormalize(cp);
if (chdir(short2str(dp)) >= 0) {
xfree((ptr_t) cp);
return dgoto(dp);
}
else {
xfree((ptr_t) dp);
if (chdir(short2str(cp)) >= 0)
return dgoto(cp);
serrno = errno;
}
if (cp[0] != '/' && !prefix(STRdotsl, cp) && !prefix(STRdotdotsl, cp)
&& (c = adrof(STRcdpath))) {
Char **cdp;
Char *p;
Char buf[MAXPATHLEN];
for (cdp = c->vec; *cdp; cdp++) {
for (dp = buf, p = *cdp; (*dp++ = *p++) != '\0';)
continue;
dp[-1] = '/';
for (p = cp; (*dp++ = *p++) != '\0';)
continue;
if (chdir(short2str(buf)) >= 0) {
printd = 1;
xfree((ptr_t) cp);
cp = Strsave(buf);
return dgoto(cp);
}
}
}
dp = value(cp);
if ((dp[0] == '/' || dp[0] == '.') && chdir(short2str(dp)) >= 0) {
xfree((ptr_t) cp);
cp = Strsave(dp);
printd = 1;
return dgoto(cp);
}
(void)strcpy(ebuf, short2str(cp));
xfree((ptr_t) cp);
stderror(ERR_SYSTEM, ebuf, strerror(serrno));
/* NOTREACHED */
}
/*
* dopushd - push new directory onto directory stack.
* with no arguments exchange top and second.
* with numeric argument (+n) bring it to top.
*/
void
/*ARGSUSED*/
dopushd(Char **v, struct command *t)
{
struct directory *dp;
skipargs(&v, " [<dir>|+<n>]");
printd = 1;
if (*v == NULL) {
char *tmp;
if ((dp = dcwd->di_prev) == &dhead)
dp = dhead.di_prev;
if (dp == dcwd)
stderror(ERR_NAME | ERR_NODIR);
if (chdir(tmp = short2str(dp->di_name)) < 0)
stderror(ERR_SYSTEM, tmp, strerror(errno));
dp->di_prev->di_next = dp->di_next;
dp->di_next->di_prev = dp->di_prev;
dp->di_next = dcwd->di_next;
dp->di_prev = dcwd;
dcwd->di_next->di_prev = dp;
dcwd->di_next = dp;
}
else if (v[1] != NULL)
stderror(ERR_NAME | ERR_TOOMANY);
else if ((dp = dfind(*v)) != NULL) {
char *tmp;
if (chdir(tmp = short2str(dp->di_name)) < 0)
stderror(ERR_SYSTEM, tmp, strerror(errno));
}
else {
Char *ccp;
ccp = dfollow(*v);
dp = (struct directory *)xcalloc(1, sizeof(struct directory));
dp->di_name = ccp;
dp->di_count = 0;
dp->di_prev = dcwd;
dp->di_next = dcwd->di_next;
dcwd->di_next = dp;
dp->di_next->di_prev = dp;
}
dnewcwd(dp);
}
/*
* dfind - find a directory if specified by numeric (+n) argument
*/
static struct directory *
dfind(Char *cp)
{
struct directory *dp;
Char *ep;
int i;
if (*cp++ != '+')
return (0);
for (ep = cp; Isdigit(*ep); ep++)
continue;
if (*ep)
return (0);
i = getn(cp);
if (i <= 0)
return (0);
for (dp = dcwd; i != 0; i--) {
if ((dp = dp->di_prev) == &dhead)
dp = dp->di_prev;
if (dp == dcwd)
stderror(ERR_NAME | ERR_DEEP);
}
return (dp);
}
/*
* dopopd - pop a directory out of the directory stack
* with a numeric argument just discard it.
*/
void
/*ARGSUSED*/
dopopd(Char **v, struct command *t)
{
struct directory *dp, *p = NULL;
skipargs(&v, " [+<n>]");
printd = 1;
if (*v == NULL)
dp = dcwd;
else if (v[1] != NULL)
stderror(ERR_NAME | ERR_TOOMANY);
else if ((dp = dfind(*v)) == 0)
stderror(ERR_NAME | ERR_BADDIR);
if (dp->di_prev == &dhead && dp->di_next == &dhead)
stderror(ERR_NAME | ERR_EMPTY);
if (dp == dcwd) {
char *tmp;
if ((p = dp->di_prev) == &dhead)
p = dhead.di_prev;
if (chdir(tmp = short2str(p->di_name)) < 0)
stderror(ERR_SYSTEM, tmp, strerror(errno));
}
dp->di_prev->di_next = dp->di_next;
dp->di_next->di_prev = dp->di_prev;
if (dp == dcwd)
dnewcwd(p);
else {
printdirs();
}
dfree(dp);
}
/*
* dfree - free the directory (or keep it if it still has ref count)
*/
void
dfree(struct directory *dp)
{
if (dp->di_count != 0) {
dp->di_next = dp->di_prev = 0;
}
else {
xfree((char *) dp->di_name);
xfree((ptr_t) dp);
}
}
/*
* dcanon - canonicalize the pathname, removing excess ./ and ../ etc.
* we are of course assuming that the file system is standardly
* constructed (always have ..'s, directories have links)
*/
Char *
dcanon(Char *cp, Char *p)
{
Char slink[MAXPATHLEN];
char tlink[MAXPATHLEN];
Char *newcp, *sp;
Char *p1, *p2; /* general purpose */
ssize_t cc;
size_t len;
int slash;
/*
* christos: if the path given does not start with a slash prepend cwd. If
* cwd does not start with a path or the result would be too long abort().
*/
if (*cp != '/') {
Char tmpdir[MAXPATHLEN];
p1 = value(STRcwd);
if (p1 == NULL || *p1 != '/')
abort();
if (Strlen(p1) + Strlen(cp) + 1 >= MAXPATHLEN)
abort();
(void)Strcpy(tmpdir, p1);
(void)Strcat(tmpdir, STRslash);
(void)Strcat(tmpdir, cp);
xfree((ptr_t) cp);
cp = p = Strsave(tmpdir);
}
while (*p) { /* for each component */
sp = p; /* save slash address */
while (*++p == '/') /* flush extra slashes */
continue;
if (p != ++sp)
for (p1 = sp, p2 = p; (*p1++ = *p2++) != '\0';)
continue;
p = sp; /* save start of component */
slash = 0;
while (*++p) /* find next slash or end of path */
if (*p == '/') {
slash = 1;
*p = 0;
break;
}
if (*sp == '\0') { /* if component is null */
if (--sp == cp) /* if path is one char (i.e. /) */
break;
else
*sp = '\0';
} else if (sp[0] == '.' && sp[1] == 0) {
if (slash) {
for (p1 = sp, p2 = p + 1; (*p1++ = *p2++) != '\0';)
continue;
p = --sp;
}
else if (--sp != cp)
*sp = '\0';
}
else if (sp[0] == '.' && sp[1] == '.' && sp[2] == 0) {
/*
* We have something like "yyy/xxx/..", where "yyy" can be null or
* a path starting at /, and "xxx" is a single component. Before
* compressing "xxx/..", we want to expand "yyy/xxx", if it is a
* symbolic link.
*/
*--sp = 0; /* form the pathname for readlink */
if (sp != cp && !adrof(STRignore_symlinks) &&
(cc = readlink(short2str(cp), tlink,
sizeof(tlink) - 1)) >= 0) {
tlink[cc] = '\0';
(void)Strcpy(slink, str2short(tlink));
if (slash)
*p = '/';
/*
* Point p to the '/' in "/..", and restore the '/'.
*/
*(p = sp) = '/';
/*
* find length of p
*/
for (p1 = p; *p1++;)
continue;
if (*slink != '/') {
/*
* Relative path, expand it between the "yyy/" and the
* "/..". First, back sp up to the character past "yyy/".
*/
while (*--sp != '/')
continue;
sp++;
*sp = 0;
/*
* New length is "yyy/" + slink + "/.." and rest
*/
p1 = newcp = xmalloc(
(size_t)((sp - cp) + cc + (p1 - p)) * sizeof(Char));
/*
* Copy new path into newcp
*/
for (p2 = cp; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = slink; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
continue;
/*
* Restart canonicalization at expanded "/xxx".
*/
p = sp - cp - 1 + newcp;
}
else {
/*
* New length is slink + "/.." and rest
*/
p1 = newcp = xmalloc(
(size_t)(cc + (p1 - p)) * sizeof(Char));
/*
* Copy new path into newcp
*/
for (p2 = slink; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
continue;
/*
* Restart canonicalization at beginning
*/
p = newcp;
}
xfree((ptr_t) cp);
cp = newcp;
continue; /* canonicalize the link */
}
*sp = '/';
if (sp != cp)
while (*--sp != '/')
continue;
if (slash) {
for (p1 = sp + 1, p2 = p + 1; (*p1++ = *p2++) != '\0';)
continue;
p = sp;
}
else if (cp == sp)
*++sp = '\0';
else
*sp = '\0';
}
else { /* normal dir name (not . or .. or nothing) */
if (sp != cp && adrof(STRchase_symlinks) &&
!adrof(STRignore_symlinks) &&
(cc = readlink(short2str(cp), tlink, sizeof(tlink)-1)) >= 0) {
tlink[cc] = '\0';
(void)Strcpy(slink, str2short(tlink));
/*
* restore the '/'.
*/
if (slash)
*p = '/';
/*
* point sp to p (rather than backing up).
*/
sp = p;
/*
* find length of p
*/
for (p1 = p; *p1++;)
continue;
if (*slink != '/') {
/*
* Relative path, expand it between the "yyy/" and the
* remainder. First, back sp up to the character past
* "yyy/".
*/
while (*--sp != '/')
continue;
sp++;
*sp = 0;
/*
* New length is "yyy/" + slink + "/.." and rest
*/
p1 = newcp = xmalloc(
(size_t)((sp - cp) + cc + (p1 - p)) * sizeof(Char));
/*
* Copy new path into newcp
*/
for (p2 = cp; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = slink; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
continue;
/*
* Restart canonicalization at expanded "/xxx".
*/
p = sp - cp - 1 + newcp;
}
else {
/*
* New length is slink + the rest
*/
p1 = newcp = xmalloc(
(size_t)(cc + (p1 - p)) * sizeof(Char));
/*
* Copy new path into newcp
*/
for (p2 = slink; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
continue;
/*
* Restart canonicalization at beginning
*/
p = newcp;
}
xfree((ptr_t) cp);
cp = newcp;
continue; /* canonicalize the link */
}
if (slash)
*p = '/';
}
}
/*
* fix home...
*/
p1 = value(STRhome);
len = Strlen(p1);
/*
* See if we're not in a subdir of STRhome
*/
if (p1 && *p1 == '/' &&
(Strncmp(p1, cp, len) != 0 || (cp[len] != '/' && cp[len] != '\0'))) {
static ino_t home_ino;
static dev_t home_dev = NODEV;
static Char *home_ptr = NULL;
struct stat statbuf;
/*
* Get dev and ino of STRhome
*/
if (home_ptr != p1 &&
stat(short2str(p1), &statbuf) != -1) {
home_dev = statbuf.st_dev;
home_ino = statbuf.st_ino;
home_ptr = p1;
}
/*
* Start comparing dev & ino backwards
*/
p2 = Strcpy(slink, cp);
for (sp = NULL; *p2 && stat(short2str(p2), &statbuf) != -1;) {
if (statbuf.st_dev == home_dev &&
statbuf.st_ino == home_ino) {
sp = (Char *) - 1;
break;
}
if ((sp = Strrchr(p2, '/')) != NULL)
*sp = '\0';
}
/*
* See if we found it
*/
if (*p2 && sp == (Char *) -1) {
/*
* Use STRhome to make '~' work
*/
newcp = Strspl(p1, cp + Strlen(p2));
xfree((ptr_t) cp);
cp = newcp;
}
}
return cp;
}
/*
* dnewcwd - make a new directory in the loop the current one
*/
static void
dnewcwd(struct directory *dp)
{
dcwd = dp;
dset(dcwd->di_name);
if (printd && !(adrof(STRpushdsilent)))
printdirs();
}

48
bin/csh/dir.h Normal file
View file

@ -0,0 +1,48 @@
/* $NetBSD: dir.h,v 1.8 2003/08/07 09:05:04 agc Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)dir.h 8.1 (Berkeley) 5/31/93
*/
#ifndef _DIR_H_
#define _DIR_H_
/*
* Structure for entries in directory stack.
*/
struct directory {
struct directory *di_next; /* next in loop */
struct directory *di_prev; /* prev in loop */
unsigned short *di_count; /* refcount of processes */
Char *di_name; /* actual name */
};
struct directory *dcwd; /* the one we are in now */
#endif /* !_DIR_H_ */

968
bin/csh/dol.c Normal file
View file

@ -0,0 +1,968 @@
/* $NetBSD: dol.c,v 1.29 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)dol.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: dol.c,v 1.29 2013/07/16 17:47:43 christos Exp $");
#endif
#endif /* not lint */
#include <sys/types.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "csh.h"
#include "extern.h"
/*
* These routines perform variable substitution and quoting via ' and ".
* To this point these constructs have been preserved in the divided
* input words. Here we expand variables and turn quoting via ' and " into
* QUOTE bits on characters (which prevent further interpretation).
* If the `:q' modifier was applied during history expansion, then
* some QUOTEing may have occurred already, so we dont "trim()" here.
*/
static int Dpeekc, Dpeekrd; /* Peeks for DgetC and Dreadc */
static Char *Dcp, **Dvp; /* Input vector for Dreadc */
#define DEOF -1
#define unDgetC(c) Dpeekc = c
#define QUOTES (_QF|_QB|_ESC) /* \ ' " ` */
/*
* The following variables give the information about the current
* $ expansion, recording the current word position, the remaining
* words within this expansion, the count of remaining words, and the
* information about any : modifier which is being applied.
*/
#define MAXWLEN (BUFSIZE - 4)
#define MAXMOD MAXWLEN /* This cannot overflow */
static Char dolmod[MAXMOD]; /* : modifier character */
static Char *dolp; /* Remaining chars from this word */
static Char **dolnxt; /* Further words */
static int dolcnt; /* Count of further words */
static int dolnmod; /* Number of modifiers */
static int dolmcnt; /* :gx -> 10000, else 1 */
static int dolwcnt; /* :wx -> 10000, else 1 */
static void Dfix2(Char **);
static Char *Dpack(Char *, Char *);
static int Dword(void);
__dead static void dolerror(Char *);
static int DgetC(int);
static void Dgetdol(void);
static void fixDolMod(void);
static void setDolp(Char *);
static void unDredc(int);
static int Dredc(void);
static void Dtestq(int);
/*
* Fix up the $ expansions and quotations in the
* argument list to command t.
*/
void
Dfix(struct command *t)
{
Char *p, **pp;
if (noexec)
return;
/* Note that t_dcom isn't trimmed thus !...:q's aren't lost */
for (pp = t->t_dcom; (p = *pp++) != NULL;)
for (; *p; p++) {
if (cmap(*p, _DOL | QUOTES)) { /* $, \, ', ", ` */
Dfix2(t->t_dcom); /* found one */
blkfree(t->t_dcom);
t->t_dcom = gargv;
gargv = 0;
return;
}
}
}
/*
* $ substitute one word, for i/o redirection
*/
Char *
Dfix1(Char *cp)
{
Char *Dv[2];
if (noexec)
return (0);
Dv[0] = cp;
Dv[1] = NULL;
Dfix2(Dv);
if (gargc != 1) {
setname(vis_str(cp));
stderror(ERR_NAME | ERR_AMBIG);
}
cp = Strsave(gargv[0]);
blkfree(gargv), gargv = 0;
return (cp);
}
/*
* Subroutine to do actual fixing after state initialization.
*/
static void
Dfix2(Char **v)
{
ginit(); /* Initialize glob's area pointers */
Dvp = v;
Dcp = STRNULL; /* Setup input vector for Dreadc */
unDgetC(0);
unDredc(0); /* Clear out any old peeks (at error) */
dolp = 0;
dolcnt = 0; /* Clear out residual $ expands (...) */
while (Dword())
continue;
}
/*
* Pack up more characters in this word
*/
static Char *
Dpack(Char *wbuf, Char *wp)
{
int c;
ptrdiff_t i;
i = MAXWLEN - (wp - wbuf);
for (;;) {
c = DgetC(DODOL);
if (c == '\\') {
c = DgetC(0);
if (c == DEOF) {
unDredc(c);
*wp = 0;
Gcat(STRNULL, wbuf);
return (NULL);
}
if (c == '\n')
c = ' ';
else
c |= QUOTE;
}
if (c == DEOF) {
unDredc(c);
*wp = 0;
Gcat(STRNULL, wbuf);
return (NULL);
}
if (cmap(c, _SP | _NL | _QF | _QB)) { /* sp \t\n'"` */
unDgetC(c);
if (cmap(c, QUOTES))
return (wp);
*wp++ = 0;
Gcat(STRNULL, wbuf);
return (NULL);
}
if (--i <= 0)
stderror(ERR_WTOOLONG);
*wp++ = (Char)c;
}
}
/*
* Get a word. This routine is analogous to the routine
* word() in sh.lex.c for the main lexical input. One difference
* here is that we don't get a newline to terminate our expansion.
* Rather, DgetC will return a DEOF when we hit the end-of-input.
*/
static int
Dword(void)
{
Char wbuf[BUFSIZE], *wp;
int c, c1;
ptrdiff_t i;
int dolflg, done, sofar;
done = 0;
i = MAXWLEN;
sofar = 0;
wp = wbuf;
while (!done) {
done = 1;
c = DgetC(DODOL);
switch (c) {
case DEOF:
if (sofar == 0)
return (0);
/* finish this word and catch the code above the next time */
unDredc(c);
/* FALLTHROUGH */
case '\n':
*wp = 0;
Gcat(STRNULL, wbuf);
return (1);
case ' ':
case '\t':
done = 0;
break;
case '`':
/* We preserve ` quotations which are done yet later */
*wp++ = (Char)c, --i;
/* FALLTHROUGH */
case '\'':
case '"':
/*
* Note that DgetC never returns a QUOTES character from an
* expansion, so only true input quotes will get us here or out.
*/
c1 = c;
dolflg = c1 == '"' ? DODOL : 0;
for (;;) {
c = DgetC(dolflg);
if (c == c1)
break;
if (c == '\n' || c == DEOF)
stderror(ERR_UNMATCHED, c1);
if ((c & (QUOTE | TRIM)) == ('\n' | QUOTE))
--wp, ++i;
if (--i <= 0)
stderror(ERR_WTOOLONG);
switch (c1) {
case '"':
/*
* Leave any `s alone for later. Other chars are all
* quoted, thus `...` can tell it was within "...".
*/
*wp++ = (Char)(c == '`' ? '`' : (c | QUOTE));
break;
case '\'':
/* Prevent all further interpretation */
*wp++ = (Char)(c | QUOTE);
break;
case '`':
/* Leave all text alone for later */
*wp++ = (Char)c;
break;
default:
break;
}
}
if (c1 == '`')
*wp++ = '`' /* i--; eliminated */;
sofar = 1;
if ((wp = Dpack(wbuf, wp)) == NULL)
return (1);
else {
i = MAXWLEN - (wp - wbuf);
done = 0;
}
break;
case '\\':
c = DgetC(0); /* No $ subst! */
if (c == '\n' || c == DEOF) {
done = 0;
break;
}
c |= QUOTE;
break;
default:
break;
}
if (done) {
unDgetC(c);
sofar = 1;
if ((wp = Dpack(wbuf, wp)) == NULL)
return (1);
else {
i = MAXWLEN - (wp - wbuf);
done = 0;
}
}
}
/* Really NOTREACHED */
return (0);
}
/*
* Get a character, performing $ substitution unless flag is 0.
* Any QUOTES character which is returned from a $ expansion is
* QUOTEd so that it will not be recognized above.
*/
static int
DgetC(int flag)
{
int c;
top:
if ((c = Dpeekc) != '\0') {
Dpeekc = 0;
return (c);
}
if (lap) {
c = *lap++ & (QUOTE | TRIM);
if (c == 0) {
lap = 0;
goto top;
}
quotspec:
if (cmap(c, QUOTES))
return (c | QUOTE);
return (c);
}
if (dolp) {
if ((c = *dolp++ & (QUOTE | TRIM)) != '\0')
goto quotspec;
if (dolcnt > 0) {
setDolp(*dolnxt++);
--dolcnt;
return (' ');
}
dolp = 0;
}
if (dolcnt > 0) {
setDolp(*dolnxt++);
--dolcnt;
goto top;
}
c = Dredc();
if (c == '$' && flag) {
Dgetdol();
goto top;
}
return (c);
}
static Char *nulvec[] = {0};
static struct varent nulargv = {nulvec, STRargv, { NULL, NULL, NULL }, 0};
static void
dolerror(Char *s)
{
setname(vis_str(s));
stderror(ERR_NAME | ERR_RANGE);
/* NOTREACHED */
}
/*
* Handle the multitudinous $ expansion forms.
* Ugh.
*/
static void
Dgetdol(void)
{
static Char *dolbang = NULL;
Char name[4*MAXVARLEN+1];
Char wbuf[BUFSIZE];
struct varent *vp;
Char *np;
int c, lwb, sc, subscr, upb;
int dimen, bitset;
char tnp;
bitset = 0;
dimen = 0;
lwb = 1;
upb = 0;
subscr = 0;
vp = NULL;
dolnmod = dolmcnt = dolwcnt = 0;
c = sc = DgetC(0);
if (c == '{')
c = DgetC(0); /* sc is { to take } later */
if ((c & TRIM) == '#')
dimen++, c = DgetC(0); /* $# takes dimension */
else if (c == '?')
bitset++, c = DgetC(0); /* $? tests existence */
switch (c) {
case '!':
if (dimen || bitset)
stderror(ERR_SYNTAX);
if (backpid != 0) {
if (dolbang)
xfree((ptr_t)dolbang);
setDolp(dolbang = putn(backpid));
}
goto eatbrac;
case '$':
if (dimen || bitset)
stderror(ERR_SYNTAX);
setDolp(doldol);
goto eatbrac;
case '<' | QUOTE:
if (bitset)
stderror(ERR_NOTALLOWED, "$?<");
if (dimen)
stderror(ERR_NOTALLOWED, "$?#");
for (np = wbuf; read(OLDSTD, &tnp, 1) == 1; np++) {
*np = (unsigned char)tnp;
if (np >= &wbuf[BUFSIZE - 1])
stderror(ERR_LTOOLONG);
if (tnp == '\n')
break;
}
*np = 0;
/*
* KLUDGE: dolmod is set here because it will cause setDolp to call
* domod and thus to copy wbuf. Otherwise setDolp would use it
* directly. If we saved it ourselves, no one would know when to free
* it. The actual function of the 'q' causes filename expansion not to
* be done on the interpolated value.
*/
dolmod[dolnmod++] = 'q';
dolmcnt = 10000;
setDolp(wbuf);
goto eatbrac;
case DEOF:
case '\n':
stderror(ERR_SYNTAX);
/* NOTREACHED */
case '*':
(void) Strcpy(name, STRargv);
vp = adrof(STRargv);
subscr = -1; /* Prevent eating [...] */
break;
default:
np = name;
if (Isdigit(c)) {
if (dimen)
stderror(ERR_NOTALLOWED, "$#<num>");
subscr = 0;
do {
subscr = subscr * 10 + c - '0';
c = DgetC(0);
} while (Isdigit(c));
unDredc(c);
if (subscr < 0)
stderror(ERR_RANGE);
if (subscr == 0) {
if (bitset) {
dolp = ffile ? STR1 : STR0;
goto eatbrac;
}
if (ffile == 0)
stderror(ERR_DOLZERO);
fixDolMod();
setDolp(ffile);
goto eatbrac;
}
if (bitset)
stderror(ERR_DOLQUEST);
vp = adrof(STRargv);
if (vp == 0) {
vp = &nulargv;
goto eatmod;
}
break;
}
if (!alnum(c))
stderror(ERR_VARALNUM);
for (;;) {
*np++ = (Char)c;
c = DgetC(0);
if (!alnum(c))
break;
if (np >= &name[MAXVARLEN])
stderror(ERR_VARTOOLONG);
}
*np++ = 0;
unDredc(c);
vp = adrof(name);
}
if (bitset) {
dolp = (vp || getenv(short2str(name))) ? STR1 : STR0;
goto eatbrac;
}
if (vp == 0) {
np = str2short(getenv(short2str(name)));
if (np) {
fixDolMod();
setDolp(np);
goto eatbrac;
}
udvar(name);
}
c = DgetC(0);
upb = blklen(vp->vec);
if (dimen == 0 && subscr == 0 && c == '[') {
np = name;
for (;;) {
c = DgetC(DODOL); /* Allow $ expand within [ ] */
if (c == ']')
break;
if (c == '\n' || c == DEOF)
stderror(ERR_INCBR);
if (np >= &name[sizeof(name) / sizeof(Char) - 2])
stderror(ERR_VARTOOLONG);
*np++ = (Char)c;
}
*np = 0, np = name;
if (dolp || dolcnt) /* $ exp must end before ] */
stderror(ERR_EXPORD);
if (!*np)
stderror(ERR_SYNTAX);
if (Isdigit(*np)) {
int i;
for (i = 0; Isdigit(*np); i = i * 10 + *np++ - '0')
continue;
if ((i < 0 || i > upb) && !any("-*", *np)) {
dolerror(vp->v_name);
return;
}
lwb = i;
if (!*np)
upb = lwb, np = STRstar;
}
if (*np == '*')
np++;
else if (*np != '-')
stderror(ERR_MISSING, '-');
else {
int i = upb;
np++;
if (Isdigit(*np)) {
i = 0;
while (Isdigit(*np))
i = i * 10 + *np++ - '0';
if (i < 0 || i > upb) {
dolerror(vp->v_name);
return;
}
}
if (i < lwb)
upb = lwb - 1;
else
upb = i;
}
if (lwb == 0) {
if (upb != 0) {
dolerror(vp->v_name);
return;
}
upb = -1;
}
if (*np)
stderror(ERR_SYNTAX);
}
else {
if (subscr > 0) {
if (subscr > upb)
lwb = 1, upb = 0;
else
lwb = upb = subscr;
}
unDredc(c);
}
if (dimen) {
Char *cp = putn(upb - lwb + 1);
addla(cp);
xfree((ptr_t) cp);
}
else {
eatmod:
fixDolMod();
dolnxt = &vp->vec[lwb - 1];
dolcnt = upb - lwb + 1;
}
eatbrac:
if (sc == '{') {
c = Dredc();
if (c != '}')
stderror(ERR_MISSING, '}');
}
}
static void
fixDolMod(void)
{
int c;
c = DgetC(0);
if (c == ':') {
do {
c = DgetC(0), dolmcnt = 1, dolwcnt = 1;
if (c == 'g' || c == 'a') {
if (c == 'g')
dolmcnt = 10000;
else
dolwcnt = 10000;
c = DgetC(0);
}
if ((c == 'g' && dolmcnt != 10000) ||
(c == 'a' && dolwcnt != 10000)) {
if (c == 'g')
dolmcnt = 10000;
else
dolwcnt = 10000;
c = DgetC(0);
}
if (c == 's') { /* [eichin:19910926.0755EST] */
int delimcnt = 2;
int delim = DgetC(0);
dolmod[dolnmod++] = (Char)c;
dolmod[dolnmod++] = (Char)delim;
if (!delim || letter(delim)
|| Isdigit(delim) || any(" \t\n", delim)) {
seterror(ERR_BADSUBST);
break;
}
while ((c = DgetC(0)) != (-1)) {
dolmod[dolnmod++] = (Char)c;
if(c == delim) delimcnt--;
if(!delimcnt) break;
}
if(delimcnt) {
seterror(ERR_BADSUBST);
break;
}
continue;
}
if (!any("htrqxes", c))
stderror(ERR_BADMOD, c);
dolmod[dolnmod++] = (Char)c;
if (c == 'q')
dolmcnt = 10000;
}
while ((c = DgetC(0)) == ':');
unDredc(c);
}
else
unDredc(c);
}
static void
setDolp(Char *cp)
{
Char *dp;
int i;
if (dolnmod == 0 || dolmcnt == 0) {
dolp = cp;
return;
}
dp = cp = Strsave(cp);
for (i = 0; i < dolnmod; i++) {
/* handle s// [eichin:19910926.0510EST] */
if(dolmod[i] == 's') {
int delim;
Char *lhsub, *rhsub, *np;
size_t lhlen = 0, rhlen = 0;
int didmod = 0;
delim = dolmod[++i];
if (!delim || letter(delim)
|| Isdigit(delim) || any(" \t\n", delim)) {
seterror(ERR_BADSUBST);
break;
}
lhsub = &dolmod[++i];
while(dolmod[i] != delim && dolmod[++i]) {
lhlen++;
}
dolmod[i] = 0;
rhsub = &dolmod[++i];
while(dolmod[i] != delim && dolmod[++i]) {
rhlen++;
}
dolmod[i] = 0;
do {
dp = Strstr(cp, lhsub);
if (dp) {
np = xmalloc(
(size_t)((Strlen(cp) + 1 - lhlen + rhlen) *
sizeof(*np)));
(void)Strncpy(np, cp, (size_t)(dp - cp));
(void)Strcpy(np + (dp - cp), rhsub);
(void)Strcpy(np + (dp - cp) + rhlen, dp + lhlen);
xfree((ptr_t) cp);
dp = cp = np;
didmod = 1;
} else {
/* should this do a seterror? */
break;
}
}
while (dolwcnt == 10000);
/*
* restore dolmod for additional words
*/
dolmod[i] = rhsub[-1] = (Char)delim;
if (didmod)
dolmcnt--;
else
break;
} else {
int didmod = 0;
do {
if ((dp = domod(cp, dolmod[i]))) {
didmod = 1;
if (Strcmp(cp, dp) == 0) {
xfree((ptr_t) cp);
cp = dp;
break;
}
else {
xfree((ptr_t) cp);
cp = dp;
}
}
else
break;
}
while (dolwcnt == 10000);
dp = cp;
if (didmod)
dolmcnt--;
else
break;
}
}
if (dp) {
addla(dp);
xfree((ptr_t) dp);
}
else {
addla(cp);
xfree((ptr_t) cp);
}
dolp = STRNULL;
if (seterr)
stderror(ERR_OLD);
}
static void
unDredc(int c)
{
Dpeekrd = c;
}
static int
Dredc(void)
{
int c;
if ((c = Dpeekrd) != '\0') {
Dpeekrd = 0;
return (c);
}
if (Dcp && (c = *Dcp++))
return (c & (QUOTE | TRIM));
if (*Dvp == 0) {
Dcp = 0;
return (DEOF);
}
Dcp = *Dvp++;
return (' ');
}
static void
Dtestq(int c)
{
if (cmap(c, QUOTES))
gflag = 1;
}
/*
* Form a shell temporary file (in unit 0) from the words
* of the shell input up to EOF or a line the same as "term".
* Unit 0 should have been closed before this call.
*/
void
/*ARGSUSED*/
heredoc(Char *term)
{
Char obuf[BUFSIZE], lbuf[BUFSIZE], mbuf[BUFSIZE];
struct timespec tv;
Char *Dv[2], *lbp, *obp, *mbp, **vp;
char *tmp;
int c, ocnt, lcnt, mcnt;
int quoted;
again:
tmp = short2str(shtemp);
if (open(tmp, O_RDWR | O_CREAT | O_TRUNC | O_EXCL, 0600) < 0) {
if (errno == EEXIST) {
if (unlink(tmp) == -1) {
(void)clock_gettime(CLOCK_MONOTONIC, &tv);
mbp = putn((((int)tv.tv_sec) ^
((int)tv.tv_nsec) ^ ((int)getpid())) & 0x00ffffff);
shtemp = Strspl(STRtmpsh, mbp);
xfree((ptr_t)mbp);
}
goto again;
}
stderror(ERR_SYSTEM, tmp, strerror(errno));
}
(void)unlink(tmp); /* 0 0 inode! */
Dv[0] = term;
Dv[1] = NULL;
gflag = 0;
trim(Dv);
rscan(Dv, Dtestq);
quoted = gflag;
ocnt = BUFSIZE;
obp = obuf;
for (;;) {
/*
* Read up a line
*/
lbp = lbuf;
lcnt = BUFSIZE - 4;
for (;;) {
c = readc(1); /* 1 -> Want EOF returns */
if (c < 0 || c == '\n')
break;
if ((c &= TRIM) != '\0') {
*lbp++ = (Char)c;
if (--lcnt < 0) {
setname("<<");
stderror(ERR_NAME | ERR_OVERFLOW);
}
}
}
*lbp = 0;
/*
* Check for EOF or compare to terminator -- before expansion
*/
if (c < 0 || eq(lbuf, term)) {
(void)write(0, short2str(obuf), (size_t)(BUFSIZE - ocnt));
(void)lseek(0, (off_t)0, SEEK_SET);
return;
}
/*
* If term was quoted or -n just pass it on
*/
if (quoted || noexec) {
*lbp++ = '\n';
*lbp = 0;
for (lbp = lbuf; (c = *lbp++) != '\0';) {
*obp++ = (Char)c;
if (--ocnt == 0) {
(void) write(0, short2str(obuf), BUFSIZE);
obp = obuf;
ocnt = BUFSIZE;
}
}
continue;
}
/*
* Term wasn't quoted so variable and then command expand the input
* line
*/
Dcp = lbuf;
Dvp = Dv + 1;
mbp = mbuf;
mcnt = BUFSIZE - 4;
for (;;) {
c = DgetC(DODOL);
if (c == DEOF)
break;
if ((c &= TRIM) == 0)
continue;
/* \ quotes \ $ ` here */
if (c == '\\') {
c = DgetC(0);
if (!any("$\\`", c))
unDgetC(c | QUOTE), c = '\\';
else
c |= QUOTE;
}
*mbp++ = (Char)c;
if (--mcnt == 0) {
setname("<<");
stderror(ERR_NAME | ERR_OVERFLOW);
}
}
*mbp++ = 0;
/*
* If any ` in line do command substitution
*/
mbp = mbuf;
if (any(short2str(mbp), '`')) {
/*
* 1 arg to dobackp causes substitution to be literal. Words are
* broken only at newlines so that all blanks and tabs are
* preserved. Blank lines (null words) are not discarded.
*/
vp = dobackp(mbuf, 1);
}
else
/* Setup trivial vector similar to return of dobackp */
Dv[0] = mbp, Dv[1] = NULL, vp = Dv;
/*
* Resurrect the words from the command substitution each separated by
* a newline. Note that the last newline of a command substitution
* will have been discarded, but we put a newline after the last word
* because this represents the newline after the last input line!
*/
for (; *vp; vp++) {
for (mbp = *vp; *mbp; mbp++) {
*obp++ = *mbp & TRIM;
if (--ocnt == 0) {
(void)write(0, short2str(obuf), BUFSIZE);
obp = obuf;
ocnt = BUFSIZE;
}
}
*obp++ = '\n';
if (--ocnt == 0) {
(void)write(0, short2str(obuf), BUFSIZE);
obp = obuf;
ocnt = BUFSIZE;
}
}
if (pargv)
blkfree(pargv), pargv = 0;
}
}

388
bin/csh/err.c Normal file
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@ -0,0 +1,388 @@
/* $NetBSD: err.c,v 1.21 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)err.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: err.c,v 1.21 2013/07/16 17:47:43 christos Exp $");
#endif
#endif /* not lint */
#include <sys/types.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#include "csh.h"
#include "extern.h"
char *seterr = NULL; /* Holds last error if there was one */
#define ERR_FLAGS ((int)0xf0000000)
#define ERR_NAME 0x10000000
#define ERR_SILENT 0x20000000
#define ERR_OLD 0x40000000
static const char *errorlist[] =
{
#define ERR_SYNTAX 0
"Syntax Error",
#define ERR_NOTALLOWED 1
"%s is not allowed",
#define ERR_WTOOLONG 2
"Word too long",
#define ERR_LTOOLONG 3
"$< line too long",
#define ERR_DOLZERO 4
"No file for $0",
#define ERR_DOLQUEST 5
"$? not allowed here",
#define ERR_INCBR 6
"Incomplete [] modifier",
#define ERR_EXPORD 7
"$ expansion must end before ]",
#define ERR_BADMOD 8
"Bad : modifier in $ (%c)",
#define ERR_SUBSCRIPT 9
"Subscript error",
#define ERR_BADNUM 10
"Badly formed number",
#define ERR_NOMORE 11
"No more words",
#define ERR_FILENAME 12
"Missing file name",
#define ERR_GLOB 13
"Internal glob error",
#define ERR_COMMAND 14
"Command not found",
#define ERR_TOOFEW 15
"Too few arguments",
#define ERR_TOOMANY 16
"Too many arguments",
#define ERR_DANGER 17
"Too dangerous to alias that",
#define ERR_EMPTYIF 18
"Empty if",
#define ERR_IMPRTHEN 19
"Improper then",
#define ERR_NOPAREN 20
"Words not parenthesized",
#define ERR_NOTFOUND 21
"%s not found",
#define ERR_MASK 22
"Improper mask",
#define ERR_LIMIT 23
"No such limit",
#define ERR_TOOLARGE 24
"Argument too large",
#define ERR_SCALEF 25
"Improper or unknown scale factor",
#define ERR_UNDVAR 26
"Undefined variable",
#define ERR_DEEP 27
"Directory stack not that deep",
#define ERR_BADSIG 28
"Bad signal number",
#define ERR_UNKSIG 29
"Unknown signal; kill -l lists signals",
#define ERR_VARBEGIN 30
"Variable name must begin with a letter",
#define ERR_VARTOOLONG 31
"Variable name too long",
#define ERR_VARALNUM 32
"Variable name must contain alphanumeric characters",
#define ERR_JOBCONTROL 33
"No job control in this shell",
#define ERR_EXPRESSION 34
"Expression Syntax",
#define ERR_NOHOMEDIR 35
"No home directory",
#define ERR_CANTCHANGE 36
"Can't change to home directory",
#define ERR_NULLCOM 37
"Invalid null command",
#define ERR_ASSIGN 38
"Assignment missing expression",
#define ERR_UNKNOWNOP 39
"Unknown operator",
#define ERR_AMBIG 40
"Ambiguous",
#define ERR_EXISTS 41
"%s: File exists",
#define ERR_INTR 42
"Interrupted",
#define ERR_RANGE 43
"Subscript out of range",
#define ERR_OVERFLOW 44
"Line overflow",
#define ERR_VARMOD 45
"Unknown variable modifier",
#define ERR_NOSUCHJOB 46
"No such job",
#define ERR_TERMINAL 47
"Can't from terminal",
#define ERR_NOTWHILE 48
"Not in while/foreach",
#define ERR_NOPROC 49
"No more processes",
#define ERR_NOMATCH 50
"No match",
#define ERR_MISSING 51
"Missing %c",
#define ERR_UNMATCHED 52
"Unmatched %c",
#define ERR_NOMEM 53
"Out of memory",
#define ERR_PIPE 54
"Can't make pipe",
#define ERR_SYSTEM 55
"%s: %s",
#define ERR_STRING 56
"%s",
#define ERR_JOBS 57
"usage: jobs [ -l ]",
#define ERR_JOBARGS 58
"Arguments should be jobs or process id's",
#define ERR_JOBCUR 59
"No current job",
#define ERR_JOBPREV 60
"No previous job",
#define ERR_JOBPAT 61
"No job matches pattern",
#define ERR_NESTING 62
"Fork nesting > %d; maybe `...` loop",
#define ERR_JOBCTRLSUB 63
"No job control in subshells",
#define ERR_BADPLPS 64
"Badly placed ()'s",
#define ERR_STOPPED 65
"%sThere are suspended jobs",
#define ERR_NODIR 66
"No other directory",
#define ERR_EMPTY 67
"Directory stack empty",
#define ERR_BADDIR 68
"Bad directory",
#define ERR_DIRUS 69
"usage: %s [-lvn]%s",
#define ERR_HFLAG 70
"No operand for -h flag",
#define ERR_NOTLOGIN 71
"Not a login shell",
#define ERR_DIV0 72
"Division by 0",
#define ERR_MOD0 73
"Mod by 0",
#define ERR_BADSCALE 74
"Bad scaling; did you mean \"%s\"?",
#define ERR_SUSPLOG 75
"Can't suspend a login shell (yet)",
#define ERR_UNKUSER 76
"Unknown user: %s",
#define ERR_NOHOME 77
"No $home variable set",
#define ERR_HISTUS 78
"usage: history [-rh] [# number of events]",
#define ERR_SPDOLLT 79
"$, ! or < not allowed with $# or $?",
#define ERR_NEWLINE 80
"Newline in variable name",
#define ERR_SPSTAR 81
"* not allowed with $# or $?",
#define ERR_DIGIT 82
"$?<digit> or $#<digit> not allowed",
#define ERR_VARILL 83
"Illegal variable name",
#define ERR_NLINDEX 84
"Newline in variable index",
#define ERR_EXPOVFL 85
"Expansion buffer overflow",
#define ERR_VARSYN 86
"Variable syntax",
#define ERR_BADBANG 87
"Bad ! form",
#define ERR_NOSUBST 88
"No previous substitute",
#define ERR_BADSUBST 89
"Bad substitute",
#define ERR_LHS 90
"No previous left hand side",
#define ERR_RHSLONG 91
"Right hand side too long",
#define ERR_BADBANGMOD 92
"Bad ! modifier: %c",
#define ERR_MODFAIL 93
"Modifier failed",
#define ERR_SUBOVFL 94
"Substitution buffer overflow",
#define ERR_BADBANGARG 95
"Bad ! arg selector",
#define ERR_NOSEARCH 96
"No prev search",
#define ERR_NOEVENT 97
"%s: Event not found",
#define ERR_TOOMANYRP 98
"Too many )'s",
#define ERR_TOOMANYLP 99
"Too many ('s",
#define ERR_BADPLP 100
"Badly placed (",
#define ERR_MISRED 101
"Missing name for redirect",
#define ERR_OUTRED 102
"Ambiguous output redirect",
#define ERR_REDPAR 103
"Can't << within ()'s",
#define ERR_INRED 104
"Ambiguous input redirect",
#define ERR_ALIASLOOP 105
"Alias loop",
#define ERR_HISTLOOP 106
"!# History loop",
#define ERR_ARCH 107
"%s: %s. Wrong Architecture",
#define ERR_FILEINQ 108
"Malformed file inquiry",
#define ERR_SELOVFL 109
"Selector overflow",
#define ERR_INVALID 110
"Invalid Error"
};
/*
* The parser and scanner set up errors for later by calling seterr,
* which sets the variable err as a side effect; later to be tested,
* e.g. in process.
*/
void
seterror(int id, ...)
{
if (seterr == 0) {
char berr[BUFSIZE];
va_list va;
va_start(va, id);
if (id < 0 || id >= (int)(sizeof(errorlist) / sizeof(errorlist[0])) - 1)
id = ERR_INVALID;
(void)vsnprintf(berr, sizeof(berr), errorlist[id], va);
va_end(va);
seterr = strsave(berr);
}
}
/*
* Print the error with the given id.
*
* Special ids:
* ERR_SILENT: Print nothing.
* ERR_OLD: Print the previously set error if one was there.
* otherwise return.
* ERR_NAME: If this bit is set, print the name of the function
* in bname
*
* This routine always resets or exits. The flag haderr
* is set so the routine who catches the unwind can propogate
* it if they want.
*
* Note that any open files at the point of error will eventually
* be closed in the routine process in sh.c which is the only
* place error unwinds are ever caught.
*/
void
stderror(int id, ...)
{
va_list va;
Char **v;
int flags;
flags = id & ERR_FLAGS;
id &= ~ERR_FLAGS;
if ((flags & ERR_OLD) && seterr == NULL)
abort();
if (id < 0 || id > (int)(sizeof(errorlist) / sizeof(errorlist[0])))
id = ERR_INVALID;
(void)fflush(cshout);
(void)fflush(csherr);
haderr = 1; /* Now to diagnostic output */
timflg = 0; /* This isn't otherwise reset */
if (!(flags & ERR_SILENT)) {
if (flags & ERR_NAME)
(void)fprintf(csherr, "%s: ", bname);
if ((flags & ERR_OLD))
/* Old error. */
(void)fprintf(csherr, "%s.\n", seterr);
else {
va_start(va, id);
(void)vfprintf(csherr, errorlist[id], va);
va_end(va);
(void)fprintf(csherr, ".\n");
}
}
if (seterr) {
xfree((ptr_t) seterr);
seterr = NULL;
}
if ((v = pargv) != NULL)
pargv = 0, blkfree(v);
if ((v = gargv) != NULL)
gargv = 0, blkfree(v);
(void)fflush(cshout);
(void)fflush(csherr);
didfds = 0; /* Forget about 0,1,2 */
/*
* Go away if -e or we are a child shell
*/
if (exiterr || child)
xexit(1);
/*
* Reset the state of the input. This buffered seek to end of file will
* also clear the while/foreach stack.
*/
btoeof();
set(STRstatus, Strsave(STR1));
if (tpgrp > 0)
(void)tcsetpgrp(FSHTTY, tpgrp);
reset(); /* Unwind */
}

746
bin/csh/exec.c Normal file
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@ -0,0 +1,746 @@
/* $NetBSD: exec.c,v 1.29 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)exec.c 8.3 (Berkeley) 5/23/95";
#else
__RCSID("$NetBSD: exec.c,v 1.29 2013/07/16 17:47:43 christos Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "csh.h"
#include "extern.h"
/*
* System level search and execute of a command. We look in each directory
* for the specified command name. If the name contains a '/' then we
* execute only the full path name. If there is no search path then we
* execute only full path names.
*/
extern char **environ;
/*
* As we search for the command we note the first non-trivial error
* message for presentation to the user. This allows us often
* to show that a file has the wrong mode/no access when the file
* is not in the last component of the search path, so we must
* go on after first detecting the error.
*/
static const char *exerr; /* Execution error message */
static Char *expath; /* Path for exerr */
/*
* Xhash is an array of HSHSIZ bits (HSHSIZ / 8 chars), which are used
* to hash execs. If it is allocated (havhash true), then to tell
* whether ``name'' is (possibly) present in the i'th component
* of the variable path, you look at the bit in xhash indexed by
* hash(hashname("name"), i). This is setup automatically
* after .login is executed, and recomputed whenever ``path'' is
* changed.
* The two part hash function is designed to let texec() call the
* more expensive hashname() only once and the simple hash() several
* times (once for each path component checked).
* Byte size is assumed to be 8.
*/
#define HSHSIZ 8192 /* 1k bytes */
#define HSHMASK (HSHSIZ - 1)
#define HSHMUL 243
static unsigned char xhash[HSHSIZ / 8];
#define hash(a, b) (((a) * HSHMUL + (b)) & HSHMASK)
#define bit(h, b) ((h)[(b) >> 3] & 1 << ((b) & 7)) /* bit test */
#define bis(h, b) ((h)[(b) >> 3] |= (unsigned char)(1 << ((b) & 7))) /* bit set */
static int hits, misses;
/* Dummy search path for just absolute search when no path */
static Char *justabs[] = {STRNULL, 0};
static void pexerr(void) __dead;
static void texec(Char *, Char **);
static int hashname(Char *);
static int tellmewhat(struct wordent *, Char *);
static int executable(Char *, Char *, int);
static int iscommand(Char *);
void
/*ARGSUSED*/
doexec(Char **v, struct command *t)
{
struct varent *pathv;
Char *blk[2], **av, *dp, **pv, *sav;
int i, hashval, hashval1;
sigset_t nsigset;
int slash;
hashval = 0;
/*
* Glob the command name. We will search $path even if this does something,
* as in sh but not in csh. One special case: if there is no PATH, then we
* execute only commands which start with '/'.
*/
blk[0] = t->t_dcom[0];
blk[1] = 0;
gflag = 0, tglob(blk);
if (gflag) {
pv = globall(blk);
if (pv == 0) {
setname(vis_str(blk[0]));
stderror(ERR_NAME | ERR_NOMATCH);
}
gargv = 0;
}
else
pv = saveblk(blk);
trim(pv);
exerr = 0;
expath = Strsave(pv[0]);
Vexpath = expath;
pathv = adrof(STRpath);
if (pathv == 0 && expath[0] != '/') {
blkfree(pv);
pexerr();
}
slash = any(short2str(expath), '/');
/*
* Glob the argument list, if necessary. Otherwise trim off the quote bits.
*/
gflag = 0;
av = &t->t_dcom[1];
tglob(av);
if (gflag) {
av = globall(av);
if (av == 0) {
blkfree(pv);
setname(vis_str(expath));
stderror(ERR_NAME | ERR_NOMATCH);
}
gargv = 0;
}
else
av = saveblk(av);
blkfree(t->t_dcom);
t->t_dcom = blkspl(pv, av);
xfree((ptr_t) pv);
xfree((ptr_t) av);
av = t->t_dcom;
trim(av);
if (*av == NULL || **av == '\0')
pexerr();
xechoit(av); /* Echo command if -x */
/*
* Since all internal file descriptors are set to close on exec, we don't
* need to close them explicitly here. Just reorient ourselves for error
* messages.
*/
SHIN = 0;
SHOUT = 1;
SHERR = 2;
OLDSTD = 0;
/*
* We must do this AFTER any possible forking (like `foo` in glob) so that
* this shell can still do subprocesses.
*/
sigemptyset(&nsigset);
(void)sigprocmask(SIG_SETMASK, &nsigset, NULL);
/*
* If no path, no words in path, or a / in the filename then restrict the
* command search.
*/
if (pathv == 0 || pathv->vec[0] == 0 || slash)
pv = justabs;
else
pv = pathv->vec;
sav = Strspl(STRslash, *av); /* / command name for postpending */
Vsav = sav;
if (havhash)
hashval = hashname(*av);
i = 0;
hits++;
do {
/*
* Try to save time by looking at the hash table for where this command
* could be. If we are doing delayed hashing, then we put the names in
* one at a time, as the user enters them. This is kinda like Korn
* Shell's "tracked aliases".
*/
if (!slash && pv[0][0] == '/' && havhash) {
hashval1 = hash(hashval, i);
if (!bit(xhash, hashval1))
goto cont;
}
if (pv[0][0] == 0 || eq(pv[0], STRdot)) /* don't make ./xxx */
texec(*av, av);
else {
dp = Strspl(*pv, sav);
Vdp = dp;
texec(dp, av);
Vdp = 0;
xfree((ptr_t)dp);
}
misses++;
cont:
pv++;
i++;
} while (*pv);
hits--;
Vsav = 0;
xfree((ptr_t)sav);
pexerr();
/* NOTREACHED */
}
static void
pexerr(void)
{
/* Couldn't find the damn thing */
if (expath) {
setname(vis_str(expath));
Vexpath = 0;
xfree((ptr_t)expath);
expath = 0;
}
else
setname("");
if (exerr)
stderror(ERR_NAME | ERR_STRING, exerr);
else
stderror(ERR_NAME | ERR_COMMAND);
/* NOTREACHED */
}
/*
* Execute command f, arg list t.
* Record error message if not found.
* Also do shell scripts here.
*/
static void
texec(Char *sf, Char **st)
{
struct varent *v;
Char *lastsh[2], **vp, *st0, **ost;
char *f, **t;
int fd;
unsigned char c = '\0';
/* The order for the conversions is significant */
t = short2blk(st);
f = short2str(sf);
Vt = t;
errno = 0; /* don't use a previous error */
(void)execve(f, t, environ);
Vt = 0;
blkfree((Char **)t);
switch (errno) {
case ENOEXEC:
/*
* From: casper@fwi.uva.nl (Casper H.S. Dik) If we could not execute
* it, don't feed it to the shell if it looks like a binary!
*/
if ((fd = open(f, O_RDONLY)) != -1) {
if (read(fd, (char *)&c, 1) == 1) {
if (!Isprint(c) && (c != '\n' && c != '\t')) {
(void)close(fd);
/*
* We *know* what ENOEXEC means.
*/
stderror(ERR_ARCH, f, strerror(errno));
}
}
#ifdef _PATH_BSHELL
else
c = '#';
#endif
(void)close(fd);
}
/*
* If there is an alias for shell, then put the words of the alias in
* front of the argument list replacing the command name. Note no
* interpretation of the words at this point.
*/
v = adrof1(STRshell, &aliases);
if (v == 0) {
vp = lastsh;
vp[0] = adrof(STRshell) ? value(STRshell) : STR_SHELLPATH;
vp[1] = NULL;
#ifdef _PATH_BSHELL
if (fd != -1 && c != '#')
vp[0] = STR_BSHELL;
#endif
}
else
vp = v->vec;
st0 = st[0];
st[0] = sf;
ost = st;
st = blkspl(vp, st); /* Splice up the new arglst */
ost[0] = st0;
sf = *st;
/* The order for the conversions is significant */
t = short2blk(st);
f = short2str(sf);
xfree((ptr_t) st);
Vt = t;
(void)execve(f, t, environ);
Vt = 0;
blkfree((Char **) t);
/* FALLTHROUGH */
case ENOMEM:
stderror(ERR_SYSTEM, f, strerror(errno));
/* NOTREACHED */
case ENOENT:
break;
default:
if (exerr == 0) {
exerr = strerror(errno);
if (expath)
xfree((ptr_t) expath);
expath = Strsave(sf);
Vexpath = expath;
}
}
}
/*ARGSUSED*/
void
execash(Char **t, struct command *kp)
{
jmp_buf osetexit;
sig_t osigint, osigquit, osigterm;
int my_reenter, odidfds, oOLDSTD, oSHERR, oSHIN, oSHOUT;
int saveDIAG, saveIN, saveOUT, saveSTD;
if (chkstop == 0 && setintr)
panystop(0);
/*
* Hmm, we don't really want to do that now because we might
* fail, but what is the choice
*/
rechist();
osigint = signal(SIGINT, parintr);
osigquit = signal(SIGQUIT, parintr);
osigterm = signal(SIGTERM, parterm);
odidfds = didfds;
oSHIN = SHIN;
oSHOUT = SHOUT;
oSHERR = SHERR;
oOLDSTD = OLDSTD;
saveIN = dcopy(SHIN, -1);
saveOUT = dcopy(SHOUT, -1);
saveDIAG = dcopy(SHERR, -1);
saveSTD = dcopy(OLDSTD, -1);
lshift(kp->t_dcom, 1);
getexit(osetexit);
if ((my_reenter = setexit()) == 0) {
SHIN = dcopy(0, -1);
SHOUT = dcopy(1, -1);
SHERR = dcopy(2, -1);
didfds = 0;
doexec(t, kp);
}
(void)signal(SIGINT, osigint);
(void)signal(SIGQUIT, osigquit);
(void)signal(SIGTERM, osigterm);
doneinp = 0;
didfds = odidfds;
(void)close(SHIN);
(void)close(SHOUT);
(void)close(SHERR);
(void)close(OLDSTD);
SHIN = dmove(saveIN, oSHIN);
SHOUT = dmove(saveOUT, oSHOUT);
SHERR = dmove(saveDIAG, oSHERR);
OLDSTD = dmove(saveSTD, oOLDSTD);
resexit(osetexit);
if (my_reenter)
stderror(ERR_SILENT);
}
void
xechoit(Char **t)
{
if (adrof(STRecho)) {
int odidfds = didfds;
(void)fflush(csherr);
odidfds = didfds;
didfds = 0;
blkpr(csherr, t);
(void)fputc('\n', csherr);
(void)fflush(csherr);
didfds = odidfds;
}
}
void
/*ARGSUSED*/
dohash(Char **v, struct command *t)
{
struct dirent *dp;
struct varent *pathv;
DIR *dirp;
Char **pv;
size_t cnt;
int hashval, i;
i = 0;
havhash = 1;
pathv = adrof(STRpath);
for (cnt = 0; cnt < sizeof xhash; cnt++)
xhash[cnt] = 0;
if (pathv == 0)
return;
for (pv = pathv->vec; *pv; pv++, i++) {
if (pv[0][0] != '/')
continue;
dirp = opendir(short2str(*pv));
if (dirp == NULL)
continue;
while ((dp = readdir(dirp)) != NULL) {
if (dp->d_ino == 0)
continue;
if (dp->d_name[0] == '.' &&
(dp->d_name[1] == '\0' ||
(dp->d_name[1] == '.' && dp->d_name[2] == '\0')))
continue;
hashval = hash(hashname(str2short(dp->d_name)), i);
bis(xhash, hashval);
/* tw_add_comm_name (dp->d_name); */
}
(void) closedir(dirp);
}
}
void
/*ARGSUSED*/
dounhash(Char **v, struct command *t)
{
havhash = 0;
}
void
/*ARGSUSED*/
hashstat(Char **v, struct command *t)
{
if (hits + misses)
(void)fprintf(cshout, "%d hits, %d misses, %d%%\n",
hits, misses, 100 * hits / (hits + misses));
}
/*
* Hash a command name.
*/
static int
hashname(Char *cp)
{
long h = 0;
while (*cp)
h = hash(h, *cp++);
return ((int) h);
}
static int
iscommand(Char *name)
{
struct varent *v;
Char **pv, *sav;
int hashval, hashval1, i;
int slash;
hashval = 0;
slash = any(short2str(name), '/');
v = adrof(STRpath);
if (v == 0 || v->vec[0] == 0 || slash)
pv = justabs;
else
pv = v->vec;
sav = Strspl(STRslash, name); /* / command name for postpending */
if (havhash)
hashval = hashname(name);
i = 0;
do {
if (!slash && pv[0][0] == '/' && havhash) {
hashval1 = hash(hashval, i);
if (!bit(xhash, hashval1))
goto cont;
}
if (pv[0][0] == 0 || eq(pv[0], STRdot)) { /* don't make ./xxx */
if (executable(NULL, name, 0)) {
xfree((ptr_t) sav);
return i + 1;
}
}
else {
if (executable(*pv, sav, 0)) {
xfree((ptr_t) sav);
return i + 1;
}
}
cont:
pv++;
i++;
} while (*pv);
xfree((ptr_t) sav);
return 0;
}
/* Also by:
* Andreas Luik <luik@isaak.isa.de>
* I S A GmbH - Informationssysteme fuer computerintegrierte Automatisierung
* Azenberstr. 35
* D-7000 Stuttgart 1
* West-Germany
* is the executable() routine below and changes to iscommand().
* Thanks again!!
*/
/*
* executable() examines the pathname obtained by concatenating dir and name
* (dir may be NULL), and returns 1 either if it is executable by us, or
* if dir_ok is set and the pathname refers to a directory.
* This is a bit kludgy, but in the name of optimization...
*/
static int
executable(Char *dir, Char *name, int dir_ok)
{
struct stat stbuf;
Char path[MAXPATHLEN + 1], *dp, *sp;
char *strname;
if (dir && *dir) {
for (dp = path, sp = dir; *sp; *dp++ = *sp++)
if (dp == &path[MAXPATHLEN + 1]) {
*--dp = '\0';
break;
}
for (sp = name; *sp; *dp++ = *sp++)
if (dp == &path[MAXPATHLEN + 1]) {
*--dp = '\0';
break;
}
*dp = '\0';
strname = short2str(path);
}
else
strname = short2str(name);
return (stat(strname, &stbuf) != -1 && ((S_ISREG(stbuf.st_mode) &&
/* save time by not calling access() in the hopeless case */
(stbuf.st_mode & (S_IXOTH | S_IXGRP | S_IXUSR)) &&
access(strname, X_OK) == 0) || (dir_ok && S_ISDIR(stbuf.st_mode))));
}
/* The dowhich() is by:
* Andreas Luik <luik@isaak.isa.de>
* I S A GmbH - Informationssysteme fuer computerintegrierte Automatisierung
* Azenberstr. 35
* D-7000 Stuttgart 1
* West-Germany
* Thanks!!
*/
/*ARGSUSED*/
void
dowhich(Char **v, struct command *c)
{
struct wordent lexw[3];
struct varent *vp;
lexw[0].next = &lexw[1];
lexw[1].next = &lexw[2];
lexw[2].next = &lexw[0];
lexw[0].prev = &lexw[2];
lexw[1].prev = &lexw[0];
lexw[2].prev = &lexw[1];
lexw[0].word = STRNULL;
lexw[2].word = STRret;
while (*++v) {
if ((vp = adrof1(*v, &aliases)) != NULL) {
(void)fprintf(cshout, "%s: \t aliased to ", vis_str(*v));
blkpr(cshout, vp->vec);
(void)fputc('\n', cshout);
set(STRstatus, Strsave(STR0));
}
else {
lexw[1].word = *v;
set(STRstatus, Strsave(tellmewhat(lexw, NULL) ? STR0 : STR1));
}
}
}
static int
tellmewhat(struct wordent *lexp, Char *str)
{
struct biltins *bptr;
struct wordent *sp;
Char *cmd, *s0, *s1, *s2;
int i;
int aliased, found;
Char qc;
aliased = 0;
sp = lexp->next;
if (adrof1(sp->word, &aliases)) {
alias(lexp);
sp = lexp->next;
aliased = 1;
}
s0 = sp->word; /* to get the memory freeing right... */
/* handle quoted alias hack */
if ((*(sp->word) & (QUOTE | TRIM)) == QUOTE)
(sp->word)++;
/* do quoting, if it hasn't been done */
s1 = s2 = sp->word;
while (*s2)
switch (*s2) {
case '\'':
case '"':
qc = *s2++;
while (*s2 && *s2 != qc)
*s1++ = (Char)(*s2++ | QUOTE);
if (*s2)
s2++;
break;
case '\\':
if (*++s2)
*s1++ = (Char)(*s2++ | QUOTE);
break;
default:
*s1++ = *s2++;
}
*s1 = '\0';
for (bptr = bfunc; bptr < &bfunc[nbfunc]; bptr++) {
if (eq(sp->word, str2short(bptr->bname))) {
if (str == NULL) {
if (aliased)
prlex(cshout, lexp);
(void)fprintf(cshout, "%s: shell built-in command.\n",
vis_str(sp->word));
}
else
(void)Strcpy(str, sp->word);
sp->word = s0; /* we save and then restore this */
return 1;
}
}
sp->word = cmd = globone(sp->word, G_IGNORE);
if ((i = iscommand(sp->word)) != 0) {
Char **pv;
struct varent *v;
int slash = any(short2str(sp->word), '/');
v = adrof(STRpath);
if (v == 0 || v->vec[0] == 0 || slash)
pv = justabs;
else
pv = v->vec;
while (--i)
pv++;
if (pv[0][0] == 0 || eq(pv[0], STRdot)) {
if (!slash) {
sp->word = Strspl(STRdotsl, sp->word);
prlex(cshout, lexp);
xfree((ptr_t) sp->word);
}
else
prlex(cshout, lexp);
}
else {
s1 = Strspl(*pv, STRslash);
sp->word = Strspl(s1, sp->word);
xfree((ptr_t) s1);
if (str == NULL)
prlex(cshout, lexp);
else
(void)Strcpy(str, sp->word);
xfree((ptr_t) sp->word);
}
found = 1;
}
else {
if (str == NULL) {
if (aliased)
prlex(cshout, lexp);
(void)fprintf(csherr,
"%s: Command not found.\n", vis_str(sp->word));
}
else
(void)Strcpy(str, sp->word);
found = 0;
}
sp->word = s0; /* we save and then restore this */
xfree((ptr_t) cmd);
return found;
}

661
bin/csh/exp.c Normal file
View file

@ -0,0 +1,661 @@
/* $NetBSD: exp.c,v 1.20 2009/02/14 07:12:29 lukem Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)exp.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: exp.c,v 1.20 2009/02/14 07:12:29 lukem Exp $");
#endif
#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#ifndef SHORT_STRINGS
#include <string.h>
#endif /* SHORT_STRINGS */
#include "csh.h"
#include "extern.h"
#define IGNORE 1 /* in ignore, it means to ignore value, just parse */
#define NOGLOB 2 /* in ignore, it means not to globone */
#define ADDOP 1
#define MULOP 2
#define EQOP 4
#define RELOP 8
#define RESTOP 16
#define ANYOP 31
#define EQEQ 1
#define GTR 2
#define LSS 4
#define NOTEQ 6
#define EQMATCH 7
#define NOTEQMATCH 8
static int exp1(Char ***, int);
static int csh_exp2(Char ***, int);
static int exp2a(Char ***, int);
static int exp2b(Char ***, int);
static int exp2c(Char ***, int);
static Char *exp3(Char ***, int);
static Char *exp3a(Char ***, int);
static Char *exp4(Char ***, int);
static Char *exp5(Char ***, int);
static Char *exp6(Char ***, int);
static void evalav(Char **);
static int isa(Char *, int);
static int egetn(Char *);
#ifdef EDEBUG
static void etracc(char *, Char *, Char ***);
static void etraci(char *, int, Char ***);
#endif
int
expr(Char ***vp)
{
return (exp0(vp, 0));
}
int
exp0(Char ***vp, int ignore)
{
int p1;
p1 = exp1(vp, ignore);
#ifdef EDEBUG
etraci("exp0 p1", p1, vp);
#endif
if (**vp && eq(**vp, STRor2)) {
int p2;
(*vp)++;
p2 = exp0(vp, (ignore & IGNORE) || p1);
#ifdef EDEBUG
etraci("exp0 p2", p2, vp);
#endif
return (p1 || p2);
}
return (p1);
}
static int
exp1(Char ***vp, int ignore)
{
int p1;
p1 = csh_exp2(vp, ignore);
#ifdef EDEBUG
etraci("exp1 p1", p1, vp);
#endif
if (**vp && eq(**vp, STRand2)) {
int p2;
(*vp)++;
p2 = exp1(vp, (ignore & IGNORE) || !p1);
#ifdef EDEBUG
etraci("exp1 p2", p2, vp);
#endif
return (p1 && p2);
}
return (p1);
}
static int
csh_exp2(Char ***vp, int ignore)
{
int p1;
p1 = exp2a(vp, ignore);
#ifdef EDEBUG
etraci("exp3 p1", p1, vp);
#endif
if (**vp && eq(**vp, STRor)) {
int p2;
(*vp)++;
p2 = csh_exp2(vp, ignore);
#ifdef EDEBUG
etraci("exp3 p2", p2, vp);
#endif
return (p1 | p2);
}
return (p1);
}
static int
exp2a(Char ***vp, int ignore)
{
int p1;
p1 = exp2b(vp, ignore);
#ifdef EDEBUG
etraci("exp2a p1", p1, vp);
#endif
if (**vp && eq(**vp, STRcaret)) {
int p2;
(*vp)++;
p2 = exp2a(vp, ignore);
#ifdef EDEBUG
etraci("exp2a p2", p2, vp);
#endif
return (p1 ^ p2);
}
return (p1);
}
static int
exp2b(Char ***vp, int ignore)
{
int p1;
p1 = exp2c(vp, ignore);
#ifdef EDEBUG
etraci("exp2b p1", p1, vp);
#endif
if (**vp && eq(**vp, STRand)) {
int p2;
(*vp)++;
p2 = exp2b(vp, ignore);
#ifdef EDEBUG
etraci("exp2b p2", p2, vp);
#endif
return (p1 & p2);
}
return (p1);
}
static int
exp2c(Char ***vp, int ignore)
{
Char *p1, *p2;
int i;
p1 = exp3(vp, ignore);
#ifdef EDEBUG
etracc("exp2c p1", p1, vp);
#endif
if ((i = isa(**vp, EQOP)) != 0) {
(*vp)++;
if (i == EQMATCH || i == NOTEQMATCH)
ignore |= NOGLOB;
p2 = exp3(vp, ignore);
#ifdef EDEBUG
etracc("exp2c p2", p2, vp);
#endif
if (!(ignore & IGNORE))
switch (i) {
case EQEQ:
i = eq(p1, p2);
break;
case EQMATCH:
i = Gmatch(p1, p2);
break;
case NOTEQ:
i = !eq(p1, p2);
break;
case NOTEQMATCH:
i = !Gmatch(p1, p2);
break;
}
xfree((ptr_t) p1);
xfree((ptr_t) p2);
return (i);
}
i = egetn(p1);
xfree((ptr_t) p1);
return (i);
}
static Char *
exp3(Char ***vp, int ignore)
{
Char *p1, *p2;
int i;
p1 = exp3a(vp, ignore);
#ifdef EDEBUG
etracc("exp3 p1", p1, vp);
#endif
if ((i = isa(**vp, RELOP)) != 0) {
(*vp)++;
if (**vp && eq(**vp, STRequal))
i |= 1, (*vp)++;
p2 = exp3(vp, ignore);
#ifdef EDEBUG
etracc("exp3 p2", p2, vp);
#endif
if (!(ignore & IGNORE))
switch (i) {
case GTR:
i = egetn(p1) > egetn(p2);
break;
case GTR | 1:
i = egetn(p1) >= egetn(p2);
break;
case LSS:
i = egetn(p1) < egetn(p2);
break;
case LSS | 1:
i = egetn(p1) <= egetn(p2);
break;
}
xfree((ptr_t) p1);
xfree((ptr_t) p2);
return (putn(i));
}
return (p1);
}
static Char *
exp3a(Char ***vp, int ignore)
{
Char *op, *p1, *p2;
int i;
p1 = exp4(vp, ignore);
#ifdef EDEBUG
etracc("exp3a p1", p1, vp);
#endif
op = **vp;
if (op && any("<>", op[0]) && op[0] == op[1]) {
(*vp)++;
p2 = exp3a(vp, ignore);
#ifdef EDEBUG
etracc("exp3a p2", p2, vp);
#endif
if (op[0] == '<')
i = egetn(p1) << egetn(p2);
else
i = egetn(p1) >> egetn(p2);
xfree((ptr_t) p1);
xfree((ptr_t) p2);
return (putn(i));
}
return (p1);
}
static Char *
exp4(Char ***vp, int ignore)
{
Char *p1, *p2;
int i;
i = 0;
p1 = exp5(vp, ignore);
#ifdef EDEBUG
etracc("exp4 p1", p1, vp);
#endif
if (isa(**vp, ADDOP)) {
Char *op;
op = *(*vp)++;
p2 = exp4(vp, ignore);
#ifdef EDEBUG
etracc("exp4 p2", p2, vp);
#endif
if (!(ignore & IGNORE))
switch (op[0]) {
case '+':
i = egetn(p1) + egetn(p2);
break;
case '-':
i = egetn(p1) - egetn(p2);
break;
}
xfree((ptr_t) p1);
xfree((ptr_t) p2);
return (putn(i));
}
return (p1);
}
static Char *
exp5(Char ***vp, int ignore)
{
Char *p1, *p2;
int i;
i = 0;
p1 = exp6(vp, ignore);
#ifdef EDEBUG
etracc("exp5 p1", p1, vp);
#endif
if (isa(**vp, MULOP)) {
Char *op;
op = *(*vp)++;
p2 = exp5(vp, ignore);
#ifdef EDEBUG
etracc("exp5 p2", p2, vp);
#endif
if (!(ignore & IGNORE))
switch (op[0]) {
case '*':
i = egetn(p1) * egetn(p2);
break;
case '/':
i = egetn(p2);
if (i == 0)
stderror(ERR_DIV0);
i = egetn(p1) / i;
break;
case '%':
i = egetn(p2);
if (i == 0)
stderror(ERR_MOD0);
i = egetn(p1) % i;
break;
}
xfree((ptr_t) p1);
xfree((ptr_t) p2);
return (putn(i));
}
return (p1);
}
static Char *
exp6(Char ***vp, int ignore)
{
Char *cp, *dp, *ep;
int ccode, i;
i = 0;
if (**vp == 0)
stderror(ERR_NAME | ERR_EXPRESSION);
if (eq(**vp, STRbang)) {
(*vp)++;
cp = exp6(vp, ignore);
#ifdef EDEBUG
etracc("exp6 ! cp", cp, vp);
#endif
i = egetn(cp);
xfree((ptr_t) cp);
return (putn(!i));
}
if (eq(**vp, STRtilde)) {
(*vp)++;
cp = exp6(vp, ignore);
#ifdef EDEBUG
etracc("exp6 ~ cp", cp, vp);
#endif
i = egetn(cp);
xfree((ptr_t) cp);
return (putn(~i));
}
if (eq(**vp, STRLparen)) {
(*vp)++;
ccode = exp0(vp, ignore);
#ifdef EDEBUG
etraci("exp6 () ccode", ccode, vp);
#endif
if (**vp == 0 || ***vp != ')')
stderror(ERR_NAME | ERR_EXPRESSION);
(*vp)++;
return (putn(ccode));
}
if (eq(**vp, STRLbrace)) {
struct command faket;
Char *fakecom[2];
Char **v;
faket.t_dtyp = NODE_COMMAND;
faket.t_dflg = 0;
faket.t_dcar = faket.t_dcdr = faket.t_dspr = NULL;
faket.t_dcom = fakecom;
fakecom[0] = STRfakecom;
fakecom[1] = NULL;
(*vp)++;
v = *vp;
for (;;) {
if (!**vp)
stderror(ERR_NAME | ERR_MISSING, '}');
if (eq(*(*vp)++, STRRbrace))
break;
}
if (ignore & IGNORE)
return (Strsave(STRNULL));
psavejob();
if (pfork(&faket, -1) == 0) {
*--(*vp) = 0;
evalav(v);
exitstat();
}
pwait();
prestjob();
#ifdef EDEBUG
etraci("exp6 {} status", egetn(value(STRstatus)), vp);
#endif
return (putn(egetn(value(STRstatus)) == 0));
}
if (isa(**vp, ANYOP))
return (Strsave(STRNULL));
cp = *(*vp)++;
if (*cp == '-' && any("erwxfdzopls", cp[1])) {
struct stat stb;
if (cp[2] != '\0')
stderror(ERR_NAME | ERR_FILEINQ);
/*
* Detect missing file names by checking for operator in the file name
* position. However, if an operator name appears there, we must make
* sure that there's no file by that name (e.g., "/") before announcing
* an error. Even this check isn't quite right, since it doesn't take
* globbing into account.
*/
if (isa(**vp, ANYOP) && stat(short2str(**vp), &stb))
stderror(ERR_NAME | ERR_FILENAME);
dp = *(*vp)++;
if (ignore & IGNORE)
return (Strsave(STRNULL));
ep = globone(dp, G_ERROR);
switch (cp[1]) {
case 'r':
i = !access(short2str(ep), R_OK);
break;
case 'w':
i = !access(short2str(ep), W_OK);
break;
case 'x':
i = !access(short2str(ep), X_OK);
break;
default:
if (cp[1] == 'l' ?
lstat(short2str(ep), &stb) : stat(short2str(ep), &stb)) {
xfree((ptr_t) ep);
return (Strsave(STR0));
}
switch (cp[1]) {
case 'd':
i = S_ISDIR(stb.st_mode);
break;
case 'e':
i = 1;
break;
case 'f':
i = S_ISREG(stb.st_mode);
break;
case 'l':
#ifdef S_ISLNK
i = S_ISLNK(stb.st_mode);
#else
i = 0;
#endif
break;
case 'o':
i = stb.st_uid == (uid_t)uid;
break;
case 'p':
#ifdef S_ISFIFO
i = S_ISFIFO(stb.st_mode);
#else
i = 0;
#endif
break;
case 's':
#ifdef S_ISSOCK
i = S_ISSOCK(stb.st_mode);
#else
i = 0;
#endif
break;
case 'z':
i = stb.st_size == 0;
break;
}
}
#ifdef EDEBUG
etraci("exp6 -? i", i, vp);
#endif
xfree((ptr_t) ep);
return (putn(i));
}
#ifdef EDEBUG
etracc("exp6 default", cp, vp);
#endif
return (ignore & NOGLOB ? Strsave(cp) : globone(cp, G_ERROR));
}
static void
evalav(Char **v)
{
struct wordent *hp, paraml1, *wdp;
struct command *t;
hp = &paraml1;
wdp = hp;
set(STRstatus, Strsave(STR0));
hp->prev = hp->next = hp;
hp->word = STRNULL;
while (*v) {
struct wordent *new;
new = (struct wordent *)xcalloc(1, sizeof *wdp);
new->prev = wdp;
new->next = hp;
wdp->next = new;
wdp = new;
wdp->word = Strsave(*v++);
}
hp->prev = wdp;
alias(&paraml1);
t = syntax(paraml1.next, &paraml1, 0);
if (seterr)
stderror(ERR_OLD);
execute(t, -1, NULL, NULL);
freelex(&paraml1), freesyn(t);
}
static int
isa(Char *cp, int what)
{
if (cp == 0)
return ((what & RESTOP) != 0);
if (cp[1] == 0) {
if (what & ADDOP && (*cp == '+' || *cp == '-'))
return (1);
if (what & MULOP && (*cp == '*' || *cp == '/' || *cp == '%'))
return (1);
if (what & RESTOP && (*cp == '(' || *cp == ')' || *cp == '!' ||
*cp == '~' || *cp == '^' || *cp == '"'))
return (1);
}
else if (cp[2] == 0) {
if (what & RESTOP) {
if (cp[0] == '|' && cp[1] == '&')
return (1);
if (cp[0] == '<' && cp[1] == '<')
return (1);
if (cp[0] == '>' && cp[1] == '>')
return (1);
}
if (what & EQOP) {
if (cp[0] == '=') {
if (cp[1] == '=')
return (EQEQ);
if (cp[1] == '~')
return (EQMATCH);
}
else if (cp[0] == '!') {
if (cp[1] == '=')
return (NOTEQ);
if (cp[1] == '~')
return (NOTEQMATCH);
}
}
}
if (what & RELOP) {
if (*cp == '<')
return (LSS);
if (*cp == '>')
return (GTR);
}
return (0);
}
static int
egetn(Char *cp)
{
if (*cp && *cp != '-' && !Isdigit(*cp))
stderror(ERR_NAME | ERR_EXPRESSION);
return (getn(cp));
}
/* Phew! */
#ifdef EDEBUG
static void
etraci(char *str, int i, Char ***vp)
{
(void)fprintf(csherr, "%s=%d\t", str, i);
blkpr(csherr, *vp);
(void)fprintf(csherr, "\n");
}
static void
etracc(char *str, Char *cp, Char ***vp)
{
(void)fprintf(csherr, "%s=%s\t", str, vis_str(cp));
blkpr(csherr, *vp);
(void)fprintf(csherr, "\n");
}
#endif

341
bin/csh/extern.h Normal file
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@ -0,0 +1,341 @@
/* $NetBSD: extern.h,v 1.29 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)extern.h 8.1 (Berkeley) 5/31/93
*/
#ifndef _EXTERN_H_
#define _EXTERN_H_
#include <sys/cdefs.h>
/*
* csh.c
*/
int gethdir(Char *);
void dosource(Char **, struct command *);
__dead void exitstat(void);
__dead void goodbye(void);
void importpath(Char *);
void initdesc(void);
__dead void pintr(int);
__dead void pintr1(int);
void printprompt(void);
#ifdef EDIT
char *printpromptstr(EditLine *);
#endif
void process(int);
void rechist(void);
void untty(void);
int vis_fputc(int, FILE *);
#ifdef PROF
__dead void done(int);
#else
__dead void xexit(int);
#endif
/*
* dir.c
*/
void dinit(Char *);
void dodirs(Char **, struct command *);
Char *dcanon(Char *, Char *);
void dtildepr(Char *, Char *);
void dtilde(void);
void dochngd(Char **, struct command *);
Char *dnormalize(Char *);
void dopushd(Char **, struct command *);
void dopopd(Char **, struct command *);
struct directory;
void dfree(struct directory *);
/*
* dol.c
*/
void Dfix(struct command *);
Char *Dfix1(Char *);
void heredoc(Char *);
/*
* err.c
*/
void seterror(int, ...);
__dead void stderror(int, ...);
/*
* exec.c
*/
__dead void doexec(Char **, struct command *);
void dohash(Char **, struct command *);
void dounhash(Char **, struct command *);
void dowhich(Char **, struct command *);
void execash(Char **, struct command *);
void hashstat(Char **, struct command *);
void xechoit(Char **);
/*
* exp.c
*/
int expr(Char ***);
int exp0(Char ***, int);
/*
* file.c
*/
#ifdef FILEC
ssize_t tenex(Char *, size_t);
#endif
/*
* func.c
*/
void Setenv(Char *, Char *);
void doalias(Char **, struct command *);
void dobreak(Char **, struct command *);
void docontin(Char **, struct command *);
void doecho(Char **, struct command *);
void doelse(Char **, struct command *);
void doend(Char **, struct command *);
void doeval(Char **, struct command *);
void doexit(Char **, struct command *);
void doforeach(Char **, struct command *);
void doglob(Char **, struct command *);
void dogoto(Char **, struct command *);
void doif(Char **, struct command *);
void dolimit(Char **, struct command *);
__dead void dologin(Char **, struct command *);
__dead void dologout(Char **, struct command *);
void donohup(Char **, struct command *);
void doonintr(Char **, struct command *);
void doprintf(Char **, struct command *);
void dorepeat(Char **, struct command *);
void dosetenv(Char **, struct command *);
void dosuspend(Char **, struct command *);
void doswbrk(Char **, struct command *);
void doswitch(Char **, struct command *);
void doumask(Char **, struct command *);
void dounlimit(Char **, struct command *);
void dounsetenv(Char **, struct command *);
void dowhile(Char **, struct command *);
void dozip(Char **, struct command *);
void func(struct command *, struct biltins *);
struct biltins *isbfunc(struct command *);
void prvars(void);
void gotolab(Char *);
int srchx(Char *);
void unalias(Char **, struct command *);
void wfree(void);
/*
* glob.c
*/
Char **dobackp(Char *, int);
void Gcat(Char *, Char *);
Char *globone(Char *, int);
int Gmatch(Char *, Char *);
void ginit(void);
Char **globall(Char **);
void rscan(Char **, void (*)(int));
void tglob(Char **);
void trim(Char **);
#ifdef FILEC
int sortscmp(const ptr_t, const ptr_t);
#endif /* FILEC */
/*
* hist.c
*/
void dohist(Char **, struct command *);
struct Hist *enthist(int, struct wordent *, int);
#ifdef EDIT
void loadhist(struct Hist *);
#endif
void savehist(struct wordent *);
/*
* lex.c
*/
void addla(Char *);
void bseek(struct Ain *);
void btell(struct Ain *);
void btoeof(void);
void copylex(struct wordent *, struct wordent *);
Char *domod(Char *, int);
void freelex(struct wordent *);
int lex(struct wordent *);
void prlex(FILE *, struct wordent *);
#ifdef EDIT
int sprlex(char **, struct wordent *);
#endif
int readc(int);
void settell(void);
void unreadc(int);
/*
* misc.c
*/
int any(const char *, int);
Char **blkcat(Char **, Char **);
Char **blkcpy(Char **, Char **);
Char **blkend(Char **);
void blkfree(Char **);
int blklen(Char **);
void blkpr(FILE *, Char **);
Char **blkspl(Char **, Char **);
void closem(void);
Char **copyblk(Char **);
int dcopy(int, int);
int dmove(int, int);
void donefds(void);
Char lastchr(Char *);
void lshift(Char **, size_t);
int number(Char *);
int prefix(Char *, Char *);
Char **saveblk(Char **);
Char *strip(Char *);
Char *quote(Char *);
char *strsave(const char *);
char *strspl(char *, char *);
__dead void udvar(Char *);
#ifndef SHORT_STRINGS
# ifdef NOTUSED
char *strstr(const char *, const char *);
# endif /* NOTUSED */
char *strend(char *);
#endif
/*
* parse.c
*/
void alias(struct wordent *);
void freesyn(struct command *);
struct command *syntax(struct wordent *, struct wordent *, int);
/*
* proc.c
*/
void dobg(Char **, struct command *);
void dobg1(Char **, struct command *);
void dofg(Char **, struct command *);
void dofg1(Char **, struct command *);
void dojobs(Char **, struct command *);
void dokill(Char **, struct command *);
void donotify(Char **, struct command *);
void dostop(Char **, struct command *);
void dowait(Char **, struct command *);
void palloc(int, struct command *);
void panystop(int);
void pchild(int);
void pendjob(void);
struct process *pfind(Char *);
int pfork(struct command *, int);
void pgetty(int, int);
void pjwait(struct process *);
void pnote(void);
void prestjob(void);
void psavejob(void);
void pstart(struct process *, int);
void pwait(void);
/*
* sem.c
*/
void execute(struct command *, int, int *, int *);
void mypipe(int *);
/*
* set.c
*/
struct varent*adrof1(Char *, struct varent *);
void doset(Char **, struct command *);
void dolet(Char **, struct command *);
Char *putn(int);
int getn(Char *);
Char *value1(Char *, struct varent *);
void set(Char *, Char *);
void set1(Char *, Char **, struct varent *);
void setq(Char *, Char **, struct varent *);
void unset(Char **, struct command *);
void unset1(Char *[], struct varent *);
void unsetv(Char *);
void setNS(Char *);
void shift(Char **, struct command *);
void plist(struct varent *);
/*
* time.c
*/
void donice(Char **, struct command *);
void dotime(Char **, struct command *);
void prusage(FILE *, struct rusage *, struct rusage *, struct timespec *,
struct timespec *);
void ruadd(struct rusage *, struct rusage *);
void settimes(void);
void psecs(long);
/*
* alloc.c
*/
void Free(ptr_t);
ptr_t Malloc(size_t);
ptr_t Realloc(ptr_t, size_t);
ptr_t Calloc(size_t, size_t);
/*
* str.c:
*/
#ifdef SHORT_STRINGS
Char *s_strchr(const Char *, int);
Char *s_strrchr(const Char *, int);
Char *s_strcat(Char *, const Char *);
#ifdef NOTUSED
Char *s_strncat(Char *, const Char *, size_t);
#endif
Char *s_strcpy(Char *, const Char *);
Char *s_strncpy(Char *, const Char *, size_t);
Char *s_strspl(const Char *, const Char *);
size_t s_strlen(const Char *);
int s_strcmp(const Char *, const Char *);
int s_strncmp(const Char *, const Char *, size_t);
Char *s_strsave(const Char *);
Char *s_strend(const Char *);
Char *s_strstr(const Char *, const Char *);
Char *str2short(const char *);
Char **blk2short(char **);
char *short2str(const Char *);
char **short2blk(Char * const *);
#endif
char *short2qstr(const Char *);
char *vis_str(const Char *);
#endif /* !_EXTERN_H_ */

729
bin/csh/file.c Normal file
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@ -0,0 +1,729 @@
/* $NetBSD: file.c,v 1.30 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)file.c 8.2 (Berkeley) 3/19/94";
#else
__RCSID("$NetBSD: file.c,v 1.30 2013/07/16 17:47:43 christos Exp $");
#endif
#endif /* not lint */
#ifdef FILEC
#include <sys/ioctl.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/tty.h>
#include <dirent.h>
#include <pwd.h>
#include <termios.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#ifndef SHORT_STRINGS
#include <string.h>
#endif /* SHORT_STRINGS */
#include "csh.h"
#include "extern.h"
/*
* Tenex style file name recognition, .. and more.
* History:
* Author: Ken Greer, Sept. 1975, CMU.
* Finally got around to adding to the Cshell., Ken Greer, Dec. 1981.
*/
#define ON 1
#define OFF 0
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#define ESC '\033'
typedef enum {
LIST, RECOGNIZE
} COMMAND;
static void setup_tty(int);
static void back_to_col_1(void);
static int pushback(Char *);
static void catn(Char *, Char *, size_t);
static void copyn(Char *, Char *, size_t);
static Char filetype(Char *, Char *);
static void print_by_column(Char *, Char *[], size_t);
static Char *tilde(Char *, Char *);
static void retype(void);
static void beep(void);
static void print_recognized_stuff(Char *);
static void extract_dir_and_name(Char *, Char *, Char *);
static Char *getentry(DIR *, int);
static void free_items(Char **, size_t);
static size_t tsearch(Char *, COMMAND, size_t);
static int recognize(Char *, Char *, size_t, size_t);
static int is_prefix(Char *, Char *);
static int is_suffix(Char *, Char *);
static int ignored(Char *);
/*
* Put this here so the binary can be patched with adb to enable file
* completion by default. Filec controls completion, nobeep controls
* ringing the terminal bell on incomplete expansions.
*/
int filec = 0;
static void
setup_tty(int on)
{
struct termios tchars;
(void)tcgetattr(SHIN, &tchars);
if (on) {
tchars.c_cc[VEOL] = ESC;
if (tchars.c_lflag & ICANON)
on = TCSADRAIN;
else {
tchars.c_lflag |= ICANON;
on = TCSAFLUSH;
}
}
else {
tchars.c_cc[VEOL] = _POSIX_VDISABLE;
on = TCSADRAIN;
}
(void)tcsetattr(SHIN, on, &tchars);
}
/*
* Move back to beginning of current line
*/
static void
back_to_col_1(void)
{
struct termios tty, tty_normal;
sigset_t nsigset, osigset;
sigemptyset(&nsigset);
(void)sigaddset(&nsigset, SIGINT);
(void)sigprocmask(SIG_BLOCK, &nsigset, &osigset);
(void)tcgetattr(SHOUT, &tty);
tty_normal = tty;
tty.c_iflag &= ~INLCR;
tty.c_oflag &= ~ONLCR;
(void)tcsetattr(SHOUT, TCSADRAIN, &tty);
(void)write(SHOUT, "\r", 1);
(void)tcsetattr(SHOUT, TCSADRAIN, &tty_normal);
(void)sigprocmask(SIG_SETMASK, &osigset, NULL);
}
/*
* Push string contents back into tty queue
*/
static int
pushback(Char *string)
{
struct termios tty, tty_normal;
char buf[64], svchars[sizeof(buf)];
sigset_t nsigset, osigset;
Char *p;
size_t bufidx, i, len_str, nbuf, nsv, onsv, retrycnt;
char c;
nsv = 0;
sigemptyset(&nsigset);
(void)sigaddset(&nsigset, SIGINT);
(void)sigprocmask(SIG_BLOCK, &nsigset, &osigset);
(void)tcgetattr(SHOUT, &tty);
tty_normal = tty;
tty.c_lflag &= ~(ECHOKE | ECHO | ECHOE | ECHOK | ECHONL | ECHOPRT | ECHOCTL);
/* FIONREAD works only in noncanonical mode. */
tty.c_lflag &= ~ICANON;
tty.c_cc[VMIN] = 0;
(void)tcsetattr(SHOUT, TCSADRAIN, &tty);
for (retrycnt = 5; ; retrycnt--) {
/*
* Push back characters.
*/
for (p = string; (c = (char)*p) != '\0'; p++)
(void)ioctl(SHOUT, TIOCSTI, (ioctl_t) &c);
for (i = 0; i < nsv; i++)
(void)ioctl(SHOUT, TIOCSTI, (ioctl_t) &svchars[i]);
if (retrycnt == 0)
break; /* give up salvaging characters */
len_str = (size_t)(p - string);
if (ioctl(SHOUT, FIONREAD, (ioctl_t) &nbuf) ||
nbuf <= len_str + nsv || /* The string fit. */
nbuf > sizeof(buf)) /* For future binary compatibility
(and safety). */
break;
/*
* User has typed characters before the pushback finished.
* Salvage the characters.
*/
/* This read() should be in noncanonical mode. */
if (read(SHOUT, &buf, nbuf) != (ssize_t)nbuf)
continue; /* hangup? */
onsv = nsv;
for (bufidx = 0, i = 0; bufidx < nbuf; bufidx++, i++) {
c = buf[bufidx];
if ((i < len_str) ? c != (char)string[i] :
(i < len_str + onsv) ? c != svchars[i - len_str] : 1) {
/* Salvage a character. */
if (nsv < (int)(sizeof svchars / sizeof svchars[0])) {
svchars[nsv++] = c;
i--; /* try this comparison with the next char */
} else
break; /* too many */
}
}
}
#if 1
/*
* XXX Is this a bug or a feature of kernel tty driver?
*
* FIONREAD in canonical mode does not return correct byte count
* in tty input queue, but this is required to avoid unwanted echo.
*/
tty.c_lflag |= ICANON;
(void)tcsetattr(SHOUT, TCSADRAIN, &tty);
(void)ioctl(SHOUT, FIONREAD, (ioctl_t) &i);
#endif
(void)tcsetattr(SHOUT, TCSADRAIN, &tty_normal);
(void)sigprocmask(SIG_SETMASK, &osigset, NULL);
return (int)nsv;
}
/*
* Concatenate src onto tail of des.
* Des is a string whose maximum length is count.
* Always null terminate.
*/
static void
catn(Char *des, Char *src, size_t count)
{
while (count-- > 0 && *des)
des++;
while (count-- > 0)
if ((*des++ = *src++) == 0)
return;
*des = '\0';
}
/*
* Like strncpy but always leave room for trailing \0
* and always null terminate.
*/
static void
copyn(Char *des, Char *src, size_t count)
{
while (count-- > 0)
if ((*des++ = *src++) == 0)
return;
*des = '\0';
}
static Char
filetype(Char *dir, Char *file)
{
struct stat statb;
Char path[MAXPATHLEN];
catn(Strcpy(path, dir), file, sizeof(path) / sizeof(Char));
if (lstat(short2str(path), &statb) == 0) {
switch (statb.st_mode & S_IFMT) {
case S_IFDIR:
return ('/');
case S_IFLNK:
if (stat(short2str(path), &statb) == 0 && /* follow it out */
S_ISDIR(statb.st_mode))
return ('>');
else
return ('@');
case S_IFSOCK:
return ('=');
default:
if (statb.st_mode & 0111)
return ('*');
}
}
return (' ');
}
static struct winsize win;
/*
* Print sorted down columns
*/
static void
print_by_column(Char *dir, Char *items[], size_t count)
{
size_t c, columns, i, maxwidth, r, rows;
maxwidth = 0;
if (ioctl(SHOUT, TIOCGWINSZ, (ioctl_t) & win) < 0 || win.ws_col == 0)
win.ws_col = 80;
for (i = 0; i < count; i++)
maxwidth = maxwidth > (r = Strlen(items[i])) ? maxwidth : r;
maxwidth += 2; /* for the file tag and space */
columns = win.ws_col / maxwidth;
if (columns == 0)
columns = 1;
rows = (count + (columns - 1)) / columns;
for (r = 0; r < rows; r++) {
for (c = 0; c < columns; c++) {
i = c * rows + r;
if (i < count) {
size_t w;
(void)fprintf(cshout, "%s", vis_str(items[i]));
(void)fputc(dir ? filetype(dir, items[i]) : ' ', cshout);
if (c < columns - 1) { /* last column? */
w = Strlen(items[i]) + 1;
for (; w < maxwidth; w++)
(void) fputc(' ', cshout);
}
}
}
(void)fputc('\r', cshout);
(void)fputc('\n', cshout);
}
}
/*
* Expand file name with possible tilde usage
* ~person/mumble
* expands to
* home_directory_of_person/mumble
*/
static Char *
tilde(Char *new, Char *old)
{
static Char person[40];
struct passwd *pw;
Char *o, *p;
if (old[0] != '~')
return (Strcpy(new, old));
for (p = person, o = &old[1]; *o && *o != '/'; *p++ = *o++)
continue;
*p = '\0';
if (person[0] == '\0')
(void)Strcpy(new, value(STRhome));
else {
pw = getpwnam(short2str(person));
if (pw == NULL)
return (NULL);
(void)Strcpy(new, str2short(pw->pw_dir));
}
(void)Strcat(new, o);
return (new);
}
/*
* Cause pending line to be printed
*/
static void
retype(void)
{
struct termios tty;
(void)tcgetattr(SHOUT, &tty);
tty.c_lflag |= PENDIN;
(void)tcsetattr(SHOUT, TCSADRAIN, &tty);
}
static void
beep(void)
{
if (adrof(STRnobeep) == 0)
(void)write(SHOUT, "\007", 1);
}
/*
* Erase that silly ^[ and
* print the recognized part of the string
*/
static void
print_recognized_stuff(Char *recognized_part)
{
/* An optimized erasing of that silly ^[ */
(void)fputc('\b', cshout);
(void)fputc('\b', cshout);
switch (Strlen(recognized_part)) {
case 0: /* erase two Characters: ^[ */
(void)fputc(' ', cshout);
(void)fputc(' ', cshout);
(void)fputc('\b', cshout);
(void)fputc('\b', cshout);
break;
case 1: /* overstrike the ^, erase the [ */
(void)fprintf(cshout, "%s", vis_str(recognized_part));
(void)fputc(' ', cshout);
(void)fputc('\b', cshout);
break;
default: /* overstrike both Characters ^[ */
(void)fprintf(cshout, "%s", vis_str(recognized_part));
break;
}
(void)fflush(cshout);
}
/*
* Parse full path in file into 2 parts: directory and file names
* Should leave final slash (/) at end of dir.
*/
static void
extract_dir_and_name(Char *path, Char *dir, Char *name)
{
Char *p;
p = Strrchr(path, '/');
if (p == NULL) {
copyn(name, path, MAXNAMLEN);
dir[0] = '\0';
}
else {
copyn(name, ++p, MAXNAMLEN);
copyn(dir, path, (size_t)(p - path));
}
}
static Char *
getentry(DIR *dir_fd, int looking_for_lognames)
{
struct dirent *dirp;
struct passwd *pw;
if (looking_for_lognames) {
if ((pw = getpwent()) == NULL)
return (NULL);
return (str2short(pw->pw_name));
}
if ((dirp = readdir(dir_fd)) != NULL)
return (str2short(dirp->d_name));
return (NULL);
}
static void
free_items(Char **items, size_t numitems)
{
size_t i;
for (i = 0; i < numitems; i++)
xfree((ptr_t) items[i]);
xfree((ptr_t) items);
}
#define FREE_ITEMS(items, numitems) { \
sigset_t nsigset, osigset;\
\
sigemptyset(&nsigset);\
(void) sigaddset(&nsigset, SIGINT);\
(void) sigprocmask(SIG_BLOCK, &nsigset, &osigset);\
free_items(items, numitems);\
(void) sigprocmask(SIG_SETMASK, &osigset, NULL);\
}
/*
* Perform a RECOGNIZE or LIST command on string "word".
*/
static size_t
tsearch(Char *word, COMMAND command, size_t max_word_length)
{
Char dir[MAXPATHLEN + 1], extended_name[MAXNAMLEN + 1];
Char name[MAXNAMLEN + 1], tilded_dir[MAXPATHLEN + 1];
DIR *dir_fd;
Char *entry;
int ignoring, looking_for_lognames;
size_t name_length, nignored, numitems;
Char **items = NULL;
size_t maxitems = 0;
numitems = 0;
ignoring = TRUE;
nignored = 0;
looking_for_lognames = (*word == '~') && (Strchr(word, '/') == NULL);
if (looking_for_lognames) {
(void)setpwent();
copyn(name, &word[1], MAXNAMLEN); /* name sans ~ */
dir_fd = NULL;
}
else {
extract_dir_and_name(word, dir, name);
if (tilde(tilded_dir, dir) == 0)
return (0);
dir_fd = opendir(*tilded_dir ? short2str(tilded_dir) : ".");
if (dir_fd == NULL)
return (0);
}
again: /* search for matches */
name_length = Strlen(name);
for (numitems = 0; (entry = getentry(dir_fd, looking_for_lognames)) != NULL;) {
if (!is_prefix(name, entry))
continue;
/* Don't match . files on null prefix match */
if (name_length == 0 && entry[0] == '.' &&
!looking_for_lognames)
continue;
if (command == LIST) {
if ((size_t)numitems >= maxitems) {
maxitems += 1024;
if (items == NULL)
items = xmalloc(sizeof(*items) * maxitems);
else
items = xrealloc((ptr_t) items,
sizeof(*items) * maxitems);
}
items[numitems] = xmalloc((size_t) (Strlen(entry) + 1) *
sizeof(Char));
copyn(items[numitems], entry, MAXNAMLEN);
numitems++;
}
else { /* RECOGNIZE command */
if (ignoring && ignored(entry))
nignored++;
else if (recognize(extended_name,
entry, name_length, ++numitems))
break;
}
}
if (ignoring && numitems == 0 && nignored > 0) {
ignoring = FALSE;
nignored = 0;
if (looking_for_lognames)
(void)setpwent();
else
rewinddir(dir_fd);
goto again;
}
if (looking_for_lognames)
(void)endpwent();
else
(void)closedir(dir_fd);
if (numitems == 0)
return (0);
if (command == RECOGNIZE) {
if (looking_for_lognames)
copyn(word, STRtilde, 1);
else
/* put back dir part */
copyn(word, dir, max_word_length);
/* add extended name */
catn(word, extended_name, max_word_length);
return (numitems);
}
else { /* LIST */
qsort((ptr_t) items, numitems, sizeof(items[0]),
(int (*) (const void *, const void *)) sortscmp);
print_by_column(looking_for_lognames ? NULL : tilded_dir,
items, numitems);
if (items != NULL)
FREE_ITEMS(items, numitems);
}
return (0);
}
/*
* Object: extend what user typed up to an ambiguity.
* Algorithm:
* On first match, copy full entry (assume it'll be the only match)
* On subsequent matches, shorten extended_name to the first
* Character mismatch between extended_name and entry.
* If we shorten it back to the prefix length, stop searching.
*/
static int
recognize(Char *extended_name, Char *entry, size_t name_length, size_t numitems)
{
if (numitems == 1) /* 1st match */
copyn(extended_name, entry, MAXNAMLEN);
else { /* 2nd & subsequent matches */
Char *ent, *x;
size_t len = 0;
x = extended_name;
for (ent = entry; *x && *x == *ent++; x++, len++)
continue;
*x = '\0'; /* Shorten at 1st Char diff */
if (len == name_length) /* Ambiguous to prefix? */
return (-1); /* So stop now and save time */
}
return (0);
}
/*
* Return true if check matches initial Chars in template.
* This differs from PWB imatch in that if check is null
* it matches anything.
*/
static int
is_prefix(Char *check, Char *template)
{
do
if (*check == 0)
return (TRUE);
while (*check++ == *template++);
return (FALSE);
}
/*
* Return true if the Chars in template appear at the
* end of check, I.e., are its suffix.
*/
static int
is_suffix(Char *check, Char *template)
{
Char *c, *t;
for (c = check; *c++;)
continue;
for (t = template; *t++;)
continue;
for (;;) {
if (t == template)
return 1;
if (c == check || *--t != *--c)
return 0;
}
}
ssize_t
tenex(Char *inputline, size_t inputline_size)
{
char tinputline[BUFSIZE];
ssize_t num_read;
size_t numitems;
setup_tty(ON);
while ((num_read = read(SHIN, tinputline, BUFSIZE)) > 0) {
size_t i, nr = (size_t) num_read;
static Char delims[] = {' ', '\'', '"', '\t', ';', '&', '<',
'>', '(', ')', '|', '^', '%', '\0'};
Char *str_end, *word_start, last_Char, should_retype;
size_t space_left;
COMMAND command;
for (i = 0; i < nr; i++)
inputline[i] = (unsigned char) tinputline[i];
last_Char = inputline[nr - 1] & ASCII;
if (last_Char == '\n' || nr == inputline_size)
break;
command = (last_Char == ESC) ? RECOGNIZE : LIST;
if (command == LIST)
(void)fputc('\n', cshout);
str_end = &inputline[nr];
if (last_Char == ESC)
--str_end; /* wipeout trailing cmd Char */
*str_end = '\0';
/*
* Find LAST occurence of a delimiter in the inputline. The word start
* is one Character past it.
*/
for (word_start = str_end; word_start > inputline; --word_start)
if (Strchr(delims, word_start[-1]))
break;
space_left = inputline_size - (size_t)(word_start - inputline) - 1;
numitems = tsearch(word_start, command, space_left);
if (command == RECOGNIZE) {
/* print from str_end on */
print_recognized_stuff(str_end);
if (numitems != 1) /* Beep = No match/ambiguous */
beep();
}
/*
* Tabs in the input line cause trouble after a pushback. tty driver
* won't backspace over them because column positions are now
* incorrect. This is solved by retyping over current line.
*/
should_retype = FALSE;
if (Strchr(inputline, '\t')) { /* tab Char in input line? */
back_to_col_1();
should_retype = TRUE;
}
if (command == LIST) /* Always retype after a LIST */
should_retype = TRUE;
if (pushback(inputline))
should_retype = TRUE;
if (should_retype) {
if (command == RECOGNIZE)
(void) fputc('\n', cshout);
printprompt();
}
if (should_retype)
retype();
}
setup_tty(OFF);
return num_read;
}
static int
ignored(Char *entry)
{
struct varent *vp;
Char **cp;
if ((vp = adrof(STRfignore)) == NULL || (cp = vp->vec) == NULL)
return (FALSE);
for (; *cp != NULL; cp++)
if (is_suffix(entry, *cp))
return (TRUE);
return (FALSE);
}
#endif /* FILEC */

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923
bin/csh/glob.c Normal file
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@ -0,0 +1,923 @@
/* $NetBSD: glob.c,v 1.27 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)glob.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: glob.c,v 1.27 2013/07/16 17:47:43 christos Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <errno.h>
#include <glob.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "csh.h"
#include "extern.h"
static int noglob;
static int gargsiz, pargsiz;
/*
* Values for gflag
*/
#define G_NONE 0 /* No globbing needed */
#define G_GLOB 1 /* string contains *?[] characters */
#define G_CSH 2 /* string contains ~`{ characters */
#define GLOBSPACE 100 /* Alloc increment */
#define LBRC '{'
#define RBRC '}'
#define LBRK '['
#define RBRK ']'
#define EOS '\0'
Char **gargv = NULL;
Char **pargv = NULL;
long gargc = 0;
long pargc = 0;
/*
* globbing is now done in two stages. In the first pass we expand
* csh globbing idioms ~`{ and then we proceed doing the normal
* globbing if needed ?*[
*
* Csh type globbing is handled in globexpand() and the rest is
* handled in glob() which is part of the 4.4BSD libc.
*
*/
static Char *globtilde(Char **, Char *);
static Char *handleone(Char *, Char **, int);
static Char **libglob(Char **);
static Char **globexpand(Char **);
static int globbrace(Char *, Char *, Char ***);
static void expbrace(Char ***, Char ***, size_t);
static int pmatch(Char *, Char *);
static void pword(void);
static void psave(int);
static void backeval(Char *, int);
static Char *
globtilde(Char **nv, Char *s)
{
Char gbuf[MAXPATHLEN], *b, *e, *gstart, *u;
gstart = gbuf;
*gstart++ = *s++;
u = s;
for (b = gstart, e = &gbuf[MAXPATHLEN - 1];
*s && *s != '/' && *s != ':' && b < e;
*b++ = *s++)
continue;
*b = EOS;
if (gethdir(gstart)) {
blkfree(nv);
if (*gstart)
stderror(ERR_UNKUSER, vis_str(gstart));
else
stderror(ERR_NOHOME);
}
b = &gstart[Strlen(gstart)];
while (*s)
*b++ = *s++;
*b = EOS;
--u;
xfree((ptr_t) u);
return (Strsave(gstart));
}
static int
globbrace(Char *s, Char *p, Char ***bl)
{
Char gbuf[MAXPATHLEN];
Char *lm, *pe, *pl, *pm, **nv, **vl;
int i, len, size;
size = GLOBSPACE;
nv = vl = xmalloc(sizeof(Char *) * (size_t)size);
*vl = NULL;
len = 0;
/* copy part up to the brace */
for (lm = gbuf, p = s; *p != LBRC; *lm++ = *p++)
continue;
/* check for balanced braces */
for (i = 0, pe = ++p; *pe; pe++)
if (*pe == LBRK) {
/* Ignore everything between [] */
for (++pe; *pe != RBRK && *pe != EOS; pe++)
continue;
if (*pe == EOS) {
blkfree(nv);
return (-RBRK);
}
}
else if (*pe == LBRC)
i++;
else if (*pe == RBRC) {
if (i == 0)
break;
i--;
}
if (i != 0 || *pe == '\0') {
blkfree(nv);
return (-RBRC);
}
for (i = 0, pl = pm = p; pm <= pe; pm++)
switch (*pm) {
case LBRK:
for (++pm; *pm != RBRK && *pm != EOS; pm++)
continue;
if (*pm == EOS) {
*vl = NULL;
blkfree(nv);
return (-RBRK);
}
break;
case LBRC:
i++;
break;
case RBRC:
if (i) {
i--;
break;
}
/* FALLTHROUGH */
case ',':
if (i && *pm == ',')
break;
else {
Char savec = *pm;
*pm = EOS;
(void)Strcpy(lm, pl);
(void)Strcat(gbuf, pe + 1);
*pm = savec;
*vl++ = Strsave(gbuf);
len++;
pl = pm + 1;
if (vl == &nv[size]) {
size += GLOBSPACE;
nv = (Char **)xrealloc((ptr_t) nv,
(size_t)size * sizeof(Char *));
vl = &nv[size - GLOBSPACE];
}
}
break;
default:
break;
}
*vl = NULL;
*bl = nv;
return (len);
}
static void
expbrace(Char ***nvp, Char ***elp, size_t size)
{
Char **ex, **nv, *s, **vl;
vl = nv = *nvp;
if (elp != NULL)
ex = *elp;
else
for (ex = vl; *ex; ex++)
continue;
for (s = *vl; s; s = *++vl) {
Char *b, **bp, **vp;
/* leave {} untouched for find */
if (s[0] == '{' && (s[1] == '\0' || (s[1] == '}' && s[2] == '\0')))
continue;
if ((b = Strchr(s, '{')) != NULL) {
Char **bl;
int len;
if ((len = globbrace(s, b, &bl)) < 0) {
xfree((ptr_t)nv);
stderror(ERR_MISSING, -len);
}
xfree((ptr_t) s);
if (len == 1) {
*vl-- = *bl;
xfree((ptr_t) bl);
continue;
}
len = blklen(bl);
if (&ex[len] >= &nv[size]) {
ptrdiff_t l, e;
l = &ex[len] - &nv[size];
size += (size_t)(GLOBSPACE > l ? GLOBSPACE : l);
l = vl - nv;
e = ex - nv;
nv = (Char **)xrealloc((ptr_t)nv,
(size_t)size * sizeof(Char *));
vl = nv + l;
ex = nv + e;
}
vp = vl--;
*vp = *bl;
len--;
for (bp = ex; bp != vp; bp--)
bp[len] = *bp;
ex += len;
vp++;
for (bp = bl + 1; *bp; *vp++ = *bp++)
continue;
xfree((ptr_t)bl);
}
}
if (elp != NULL)
*elp = ex;
*nvp = nv;
}
static Char **
globexpand(Char **v)
{
Char **ex, **nv, *s, **vl;
size_t size;
size = GLOBSPACE;
nv = vl = xmalloc(sizeof(Char *) * size);
*vl = NULL;
/*
* Step 1: expand backquotes.
*/
while ((s = *v++) != NULL) {
if (Strchr(s, '`')) {
int i;
(void) dobackp(s, 0);
for (i = 0; i < pargc; i++) {
*vl++ = pargv[i];
if (vl == &nv[size]) {
size += GLOBSPACE;
nv = (Char **)xrealloc((ptr_t) nv,
(size_t)size * sizeof(Char *));
vl = &nv[size - GLOBSPACE];
}
}
xfree((ptr_t)pargv);
pargv = NULL;
}
else {
*vl++ = Strsave(s);
if (vl == &nv[size]) {
size += GLOBSPACE;
nv = (Char **)xrealloc((ptr_t)nv,
size * sizeof(Char *));
vl = &nv[size - GLOBSPACE];
}
}
}
*vl = NULL;
if (noglob)
return (nv);
/*
* Step 2: expand braces
*/
ex = vl;
expbrace(&nv, &ex, size);
/*
* Step 3: expand ~
*/
vl = nv;
for (s = *vl; s; s = *++vl)
if (*s == '~')
*vl = globtilde(nv, s);
vl = nv;
return (vl);
}
static Char *
handleone(Char *str, Char **vl, int action)
{
Char *cp, **vlp;
vlp = vl;
switch (action) {
case G_ERROR:
setname(vis_str(str));
blkfree(vl);
stderror(ERR_NAME | ERR_AMBIG);
/* NOTREACHED */
case G_APPEND:
trim(vlp);
str = Strsave(*vlp++);
do {
cp = Strspl(str, STRspace);
xfree((ptr_t)str);
str = Strspl(cp, *vlp);
xfree((ptr_t)cp);
}
while (*++vlp);
blkfree(vl);
break;
case G_IGNORE:
str = Strsave(strip(*vlp));
blkfree(vl);
break;
default:
break;
}
return (str);
}
static Char **
libglob(Char **vl)
{
glob_t globv;
char *ptr;
int gflgs, magic, match, nonomatch;
gflgs = GLOB_NOMAGIC;
magic = 0;
match = 0;
nonomatch = adrof(STRnonomatch) != 0;
if (!vl || !vl[0])
return (vl);
globv.gl_offs = 0;
globv.gl_pathv = 0;
globv.gl_pathc = 0;
if (nonomatch)
gflgs |= GLOB_NOCHECK;
do {
ptr = short2qstr(*vl);
switch (glob(ptr, gflgs, 0, &globv)) {
case GLOB_ABORTED:
setname(vis_str(*vl));
stderror(ERR_NAME | ERR_GLOB);
/* NOTREACHED */
case GLOB_NOSPACE:
stderror(ERR_NOMEM);
/* NOTREACHED */
default:
break;
}
if (globv.gl_flags & GLOB_MAGCHAR) {
match |= (globv.gl_matchc != 0);
magic = 1;
}
gflgs |= GLOB_APPEND;
}
while (*++vl);
vl = (globv.gl_pathc == 0 || (magic && !match && !nonomatch)) ?
NULL : blk2short(globv.gl_pathv);
globfree(&globv);
return (vl);
}
Char *
globone(Char *str, int action)
{
Char *v[2], **vl, **vo;
int gflg;
noglob = adrof(STRnoglob) != 0;
gflag = 0;
v[0] = str;
v[1] = 0;
tglob(v);
gflg = gflag;
if (gflg == G_NONE)
return (strip(Strsave(str)));
if (gflg & G_CSH) {
/*
* Expand back-quote, tilde and brace
*/
vo = globexpand(v);
if (noglob || (gflg & G_GLOB) == 0) {
if (vo[0] == NULL) {
xfree((ptr_t)vo);
return (Strsave(STRNULL));
}
if (vo[1] != NULL)
return (handleone(str, vo, action));
else {
str = strip(vo[0]);
xfree((ptr_t) vo);
return (str);
}
}
}
else if (noglob || (gflg & G_GLOB) == 0)
return (strip(Strsave(str)));
else
vo = v;
vl = libglob(vo);
if ((gflg & G_CSH) && vl != vo)
blkfree(vo);
if (vl == NULL) {
setname(vis_str(str));
stderror(ERR_NAME | ERR_NOMATCH);
}
if (vl[0] == NULL) {
xfree((ptr_t)vl);
return (Strsave(STRNULL));
}
if (vl[1] != NULL)
return (handleone(str, vl, action));
else {
str = strip(*vl);
xfree((ptr_t)vl);
return (str);
}
}
Char **
globall(Char **v)
{
Char **vl, **vo;
int gflg;
gflg = gflag;
if (!v || !v[0]) {
gargv = saveblk(v);
gargc = blklen(gargv);
return (gargv);
}
noglob = adrof(STRnoglob) != 0;
if (gflg & G_CSH)
/*
* Expand back-quote, tilde and brace
*/
vl = vo = globexpand(v);
else
vl = vo = saveblk(v);
if (!noglob && (gflg & G_GLOB)) {
vl = libglob(vo);
if ((gflg & G_CSH) && vl != vo)
blkfree(vo);
}
else
trim(vl);
gargc = vl ? blklen(vl) : 0;
return (gargv = vl);
}
void
ginit(void)
{
gargsiz = GLOBSPACE;
gargv = xmalloc(sizeof(Char *) * (size_t)gargsiz);
gargv[0] = 0;
gargc = 0;
}
void
rscan(Char **t, void (*f)(int))
{
Char *p;
while ((p = *t++) != NULL)
while (*p)
(*f) (*p++);
}
void
trim(Char **t)
{
Char *p;
while ((p = *t++) != NULL)
while (*p)
*p++ &= TRIM;
}
void
tglob(Char **t)
{
Char *p, c;
while ((p = *t++) != NULL) {
if (*p == '~' || *p == '=')
gflag |= G_CSH;
else if (*p == '{' &&
(p[1] == '\0' || (p[1] == '}' && p[2] == '\0')))
continue;
while ((c = *p++) != '\0') {
/*
* eat everything inside the matching backquotes
*/
if (c == '`') {
gflag |= G_CSH;
while (*p && *p != '`')
if (*p++ == '\\') {
if (*p) /* Quoted chars */
p++;
else
break;
}
if (*p) /* The matching ` */
p++;
else
break;
}
else if (c == '{')
gflag |= G_CSH;
else if (isglob(c))
gflag |= G_GLOB;
}
}
}
/*
* Command substitute cp. If literal, then this is a substitution from a
* << redirection, and so we should not crunch blanks and tabs, separating
* words only at newlines.
*/
Char **
dobackp(Char *cp, int literal)
{
Char word[MAXPATHLEN], *ep, *lp, *rp;
if (pargv) {
#ifdef notdef
abort();
#endif
blkfree(pargv);
}
pargsiz = GLOBSPACE;
pargv = xmalloc(sizeof(Char *) * (size_t)pargsiz);
pargv[0] = NULL;
pargcp = pargs = word;
pargc = 0;
pnleft = MAXPATHLEN - 4;
for (;;) {
for (lp = cp; *lp != '`'; lp++) {
if (*lp == 0) {
if (pargcp != pargs)
pword();
return (pargv);
}
psave(*lp);
}
lp++;
for (rp = lp; *rp && *rp != '`'; rp++)
if (*rp == '\\') {
rp++;
if (!*rp)
goto oops;
}
if (!*rp) {
oops:
stderror(ERR_UNMATCHED, '`');
}
ep = Strsave(lp);
ep[rp - lp] = 0;
backeval(ep, literal);
cp = rp + 1;
}
}
static void
backeval(Char *cp, int literal)
{
struct command faket;
char tibuf[BUFSIZE];
Char ibuf[BUFSIZE], *fakecom[2], *ip;
int pvec[2], c, quoted;
ssize_t icnt;
int hadnl;
hadnl = 0;
icnt = 0;
quoted = (literal || (cp[0] & QUOTE)) ? QUOTE : 0;
faket.t_dtyp = NODE_COMMAND;
faket.t_dflg = 0;
faket.t_dlef = 0;
faket.t_drit = 0;
faket.t_dspr = 0;
faket.t_dcom = fakecom;
fakecom[0] = STRfakecom1;
fakecom[1] = 0;
/*
* We do the psave job to temporarily change the current job so that the
* following fork is considered a separate job. This is so that when
* backquotes are used in a builtin function that calls glob the "current
* job" is not corrupted. We only need one level of pushed jobs as long as
* we are sure to fork here.
*/
psavejob();
/*
* It would be nicer if we could integrate this redirection more with the
* routines in sh.sem.c by doing a fake execute on a builtin function that
* was piped out.
*/
mypipe(pvec);
if (pfork(&faket, -1) == 0) {
struct wordent fparaml;
struct command *t;
(void)close(pvec[0]);
(void)dmove(pvec[1], 1);
(void)dmove(SHERR, 2);
initdesc();
/*
* Bugfix for nested backquotes by Michael Greim <greim@sbsvax.UUCP>,
* posted to comp.bugs.4bsd 12 Sep. 1989.
*/
if (pargv) /* mg, 21.dec.88 */
blkfree(pargv), pargv = 0, pargsiz = 0;
/* mg, 21.dec.88 */
arginp = cp;
for (arginp = cp; *cp; cp++) {
*cp &= TRIM;
if (*cp == '\n' || *cp == '\r')
*cp = ';';
}
/*
* In the child ``forget'' everything about current aliases or
* eval vectors.
*/
alvec = NULL;
evalvec = NULL;
alvecp = NULL;
evalp = NULL;
(void) lex(&fparaml);
if (seterr)
stderror(ERR_OLD);
alias(&fparaml);
t = syntax(fparaml.next, &fparaml, 0);
if (seterr)
stderror(ERR_OLD);
if (t)
t->t_dflg |= F_NOFORK;
(void)signal(SIGTSTP, SIG_IGN);
(void)signal(SIGTTIN, SIG_IGN);
(void)signal(SIGTTOU, SIG_IGN);
execute(t, -1, NULL, NULL);
exitstat();
}
xfree((ptr_t)cp);
(void)close(pvec[1]);
c = 0;
ip = NULL;
do {
int cnt;
cnt = 0;
for (;;) {
if (icnt == 0) {
int i;
ip = ibuf;
do
icnt = read(pvec[0], tibuf, BUFSIZE);
while (icnt == -1 && errno == EINTR);
if (icnt <= 0) {
c = -1;
break;
}
for (i = 0; i < icnt; i++)
ip[i] = (unsigned char) tibuf[i];
}
if (hadnl)
break;
--icnt;
c = (*ip++ & TRIM);
if (c == 0)
break;
if (c == '\n') {
/*
* Continue around the loop one more time, so that we can eat
* the last newline without terminating this word.
*/
hadnl = 1;
continue;
}
if (!quoted && (c == ' ' || c == '\t'))
break;
cnt++;
psave(c | quoted);
}
/*
* Unless at end-of-file, we will form a new word here if there were
* characters in the word, or in any case when we take text literally.
* If we didn't make empty words here when literal was set then we
* would lose blank lines.
*/
if (c != -1 && (cnt || literal))
pword();
hadnl = 0;
} while (c >= 0);
(void)close(pvec[0]);
pwait();
prestjob();
}
static void
psave(int c)
{
if (--pnleft <= 0)
stderror(ERR_WTOOLONG);
*pargcp++ = (Char)c;
}
static void
pword(void)
{
psave(0);
if (pargc == pargsiz - 1) {
pargsiz += GLOBSPACE;
pargv = (Char **)xrealloc((ptr_t)pargv,
(size_t)pargsiz * sizeof(Char *));
}
pargv[pargc++] = Strsave(pargs);
pargv[pargc] = NULL;
pargcp = pargs;
pnleft = MAXPATHLEN - 4;
}
int
Gmatch(Char *string, Char *pattern)
{
Char **blk, **p;
int gpol, gres;
gpol = 1;
gres = 0;
if (*pattern == '^') {
gpol = 0;
pattern++;
}
blk = xmalloc(GLOBSPACE * sizeof(Char *));
blk[0] = Strsave(pattern);
blk[1] = NULL;
expbrace(&blk, NULL, GLOBSPACE);
for (p = blk; *p; p++)
gres |= pmatch(string, *p);
blkfree(blk);
return(gres == gpol);
}
static int
pmatch(Char *string, Char *pattern)
{
int match, negate_range;
Char patternc, rangec, stringc;
for (;; ++string) {
stringc = *string & TRIM;
patternc = *pattern++;
switch (patternc) {
case 0:
return (stringc == 0);
case '?':
if (stringc == 0)
return (0);
break;
case '*':
if (!*pattern)
return (1);
while (*string)
if (Gmatch(string++, pattern))
return (1);
return (0);
case '[':
match = 0;
if ((negate_range = (*pattern == '^')) != 0)
pattern++;
while ((rangec = *pattern++) != '\0') {
if (rangec == ']')
break;
if (match)
continue;
if (rangec == '-' && *(pattern-2) != '[' && *pattern != ']') {
match = (stringc <= (*pattern & TRIM) &&
(*(pattern-2) & TRIM) <= stringc);
pattern++;
}
else
match = (stringc == (rangec & TRIM));
}
if (rangec == 0)
stderror(ERR_NAME | ERR_MISSING, ']');
if (match == negate_range)
return (0);
break;
default:
if ((patternc & TRIM) != stringc)
return (0);
break;
}
}
}
void
Gcat(Char *s1, Char *s2)
{
Char *p, *q;
ptrdiff_t n;
for (p = s1; *p++;)
continue;
for (q = s2; *q++;)
continue;
n = (p - s1) + (q - s2) - 1;
if (++gargc >= gargsiz) {
gargsiz += GLOBSPACE;
gargv = (Char **)xrealloc((ptr_t)gargv,
(size_t)gargsiz * sizeof(Char *));
}
gargv[gargc] = 0;
p = gargv[gargc - 1] = xmalloc((size_t)n * sizeof(Char));
for (q = s1; (*p++ = *q++) != '\0';)
continue;
for (p--, q = s2; (*p++ = *q++) != '\0';)
continue;
}
#ifdef FILEC
int
sortscmp(const ptr_t a, const ptr_t b)
{
#if defined(NLS) && !defined(NOSTRCOLL)
char buf[2048];
#endif
if (!a) /* check for NULL */
return (b ? 1 : 0);
if (!b)
return (-1);
if (!*(Char **)a) /* check for NULL */
return (*(Char **)b ? 1 : 0);
if (!*(Char **)b)
return (-1);
#if defined(NLS) && !defined(NOSTRCOLL)
(void)strcpy(buf, short2str(*(Char **)a));
return ((int)strcoll(buf, short2str(*(Char **)b)));
#else
return ((int)Strcmp(*(Char **)a, *(Char **)b));
#endif
}
#endif /* FILEC */

207
bin/csh/hist.c Normal file
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@ -0,0 +1,207 @@
/* $NetBSD: hist.c,v 1.20 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)hist.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: hist.c,v 1.20 2013/07/16 17:47:43 christos Exp $");
#endif
#endif /* not lint */
#include <sys/types.h>
#include <stdarg.h>
#include <stdlib.h>
#include "csh.h"
#include "extern.h"
static void hfree(struct Hist *);
static void dohist1(struct Hist *, int *, int, int);
static void phist(struct Hist *, int);
void
savehist(struct wordent *sp)
{
struct Hist *hp, *np;
Char *cp;
int histlen;
histlen = 0;
/* throw away null lines */
if (sp->next->word[0] == '\n')
return;
cp = value(STRhistory);
if (*cp) {
Char *p = cp;
while (*p) {
if (!Isdigit(*p)) {
histlen = 0;
break;
}
histlen = histlen * 10 + *p++ - '0';
}
}
for (hp = &Histlist; (np = hp->Hnext) != NULL;)
if (eventno - np->Href >= histlen || histlen == 0)
hp->Hnext = np->Hnext, hfree(np);
else
hp = np;
(void) enthist(++eventno, sp, 1);
}
#ifdef EDIT
void
loadhist(struct Hist *hp) {
char *h = NULL;
if (hi == NULL || hp == NULL)
return;
loadhist(hp->Hnext);
if (sprlex(&h, &hp->Hlex) != -1) {
HistEvent ev;
history(hi, &ev, H_ENTER, h);
}
}
#endif
struct Hist *
enthist(int event, struct wordent *lp, int docopy)
{
struct Hist *np;
#ifdef EDIT
if (hi) {
char *h = NULL;
if (sprlex(&h, lp) != -1) {
HistEvent ev;
history(hi, &ev, H_ENTER, h);
}
}
#endif
np = xmalloc(sizeof(*np));
np->Hnum = np->Href = event;
if (docopy) {
copylex(&np->Hlex, lp);
}
else {
np->Hlex.next = lp->next;
lp->next->prev = &np->Hlex;
np->Hlex.prev = lp->prev;
lp->prev->next = &np->Hlex;
}
np->Hnext = Histlist.Hnext;
Histlist.Hnext = np;
return (np);
}
static void
hfree(struct Hist *hp)
{
freelex(&hp->Hlex);
xfree((ptr_t) hp);
}
void
/*ARGSUSED*/
dohist(Char **v, struct command *t)
{
sigset_t nsigset;
int hflg, n, rflg;
hflg = 0;
rflg = 0;
if (getn(value(STRhistory)) == 0)
return;
if (setintr) {
sigemptyset(&nsigset);
(void)sigaddset(&nsigset, SIGINT);
(void)sigprocmask(SIG_UNBLOCK, &nsigset, NULL);
}
while (*++v && **v == '-') {
Char *vp = *v;
while (*++vp)
switch (*vp) {
case 'h':
hflg++;
break;
case 'r':
rflg++;
break;
case '-': /* ignore multiple '-'s */
break;
default:
stderror(ERR_HISTUS);
/* NOTREACHED */
}
}
if (*v)
n = getn(*v);
else {
n = getn(value(STRhistory));
}
dohist1(Histlist.Hnext, &n, rflg, hflg);
}
static void
dohist1(struct Hist *hp, int *np, int rflg, int hflg)
{
int print;
print = (*np) > 0;
for (; hp != 0; hp = hp->Hnext) {
(*np)--;
hp->Href++;
if (rflg == 0) {
dohist1(hp->Hnext, np, rflg, hflg);
if (print)
phist(hp, hflg);
return;
}
if (*np >= 0)
phist(hp, hflg);
}
}
static void
phist(struct Hist *hp, int hflg)
{
if (hflg == 0)
(void)fprintf(cshout, "%6d\t", hp->Hnum);
prlex(cshout, &hp->Hlex);
}

131
bin/csh/init.c Normal file
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@ -0,0 +1,131 @@
/* $NetBSD: init.c,v 1.11 2013/01/22 19:28:00 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)init.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: init.c,v 1.11 2013/01/22 19:28:00 christos Exp $");
#endif
#endif /* not lint */
#include <stdarg.h>
#include "csh.h"
#include "extern.h"
#define INF 1000
struct biltins bfunc[] =
{
{ "@", dolet, 0, INF },
{ "alias", doalias, 0, INF },
{ "bg", dobg, 0, INF },
{ "break", dobreak, 0, 0 },
{ "breaksw", doswbrk, 0, 0 },
{ "case", dozip, 0, 1 },
{ "cd", dochngd, 0, INF },
{ "chdir", dochngd, 0, INF },
{ "continue", docontin, 0, 0 },
{ "default", dozip, 0, 0 },
{ "dirs", dodirs, 0, INF },
{ "echo", doecho, 0, INF },
{ "else", doelse, 0, INF },
{ "end", doend, 0, 0 },
{ "endif", dozip, 0, 0 },
{ "endsw", dozip, 0, 0 },
{ "eval", doeval, 0, INF },
{ "exec", execash, 1, INF },
{ "exit", doexit, 0, INF },
{ "fg", dofg, 0, INF },
{ "foreach", doforeach, 3, INF },
{ "glob", doglob, 0, INF },
{ "goto", dogoto, 1, 1 },
{ "hashstat", hashstat, 0, 0 },
{ "history", dohist, 0, 2 },
{ "if", doif, 1, INF },
{ "jobs", dojobs, 0, 1 },
{ "kill", dokill, 1, INF },
{ "limit", dolimit, 0, 3 },
{ "linedit", doecho, 0, INF },
{ "login", dologin, 0, 1 },
{ "logout", dologout, 0, 0 },
{ "nice", donice, 0, INF },
{ "nohup", donohup, 0, INF },
{ "notify", donotify, 0, INF },
{ "onintr", doonintr, 0, 2 },
{ "popd", dopopd, 0, INF },
{ "printf", doprintf, 1, INF },
{ "pushd", dopushd, 0, INF },
{ "rehash", dohash, 0, 0 },
{ "repeat", dorepeat, 2, INF },
{ "set", doset, 0, INF },
{ "setenv", dosetenv, 0, 2 },
{ "shift", shift, 0, 1 },
{ "source", dosource, 1, 2 },
{ "stop", dostop, 1, INF },
{ "suspend", dosuspend, 0, 0 },
{ "switch", doswitch, 1, INF },
{ "time", dotime, 0, INF },
{ "umask", doumask, 0, 1 },
{ "unalias", unalias, 1, INF },
{ "unhash", dounhash, 0, 0 },
{ "unlimit", dounlimit, 0, INF },
{ "unset", unset, 1, INF },
{ "unsetenv", dounsetenv, 1, INF },
{ "wait", dowait, 0, 0 },
{ "which", dowhich, 1, INF },
{ "while", dowhile, 1, INF }
};
int nbfunc = sizeof(bfunc) / sizeof(*bfunc);
struct srch srchn[] =
{
{ "@", T_LET },
{ "break", T_BREAK },
{ "breaksw", T_BRKSW },
{ "case", T_CASE },
{ "default", T_DEFAULT },
{ "else", T_ELSE },
{ "end", T_END },
{ "endif", T_ENDIF },
{ "endsw", T_ENDSW },
{ "exit", T_EXIT },
{ "foreach", T_FOREACH },
{ "goto", T_GOTO },
{ "if", T_IF },
{ "label", T_LABEL },
{ "set", T_SET },
{ "switch", T_SWITCH },
{ "while", T_WHILE }
};
int nsrchn = sizeof(srchn) / sizeof(*srchn);

1631
bin/csh/lex.c Normal file
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File diff suppressed because it is too large Load diff

407
bin/csh/misc.c Normal file
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@ -0,0 +1,407 @@
/* $NetBSD: misc.c,v 1.20 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: misc.c,v 1.20 2013/07/16 17:47:43 christos Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include "csh.h"
#include "extern.h"
static int renum(int, int);
int
any(const char *s, int c)
{
if (!s)
return (0); /* Check for nil pointer */
while (*s)
if (*s++ == c)
return (1);
return (0);
}
char *
strsave(const char *s)
{
const char *n;
char *p, *r;
if (s == NULL)
s = "";
for (n = s; *n++;)
continue;
r = p = xmalloc((size_t)(n - s) * sizeof(*p));
while ((*p++ = *s++) != '\0')
continue;
return (r);
}
Char **
blkend(Char **up)
{
while (*up)
up++;
return (up);
}
void
blkpr(FILE *fp, Char **av)
{
for (; *av; av++) {
(void)fprintf(fp, "%s", vis_str(*av));
if (av[1])
(void)fprintf(fp, " ");
}
}
int
blklen(Char **av)
{
int i;
i = 0;
while (*av++)
i++;
return (i);
}
Char **
blkcpy(Char **oav, Char **bv)
{
Char **av;
av = oav;
while ((*av++ = *bv++) != NULL)
continue;
return (oav);
}
Char **
blkcat(Char **up, Char **vp)
{
(void)blkcpy(blkend(up), vp);
return (up);
}
void
blkfree(Char **av0)
{
Char **av;
av = av0;
if (!av0)
return;
for (; *av; av++)
xfree((ptr_t) * av);
xfree((ptr_t) av0);
}
Char **
saveblk(Char **v)
{
Char **newv, **onewv;
if (v == NULL)
return NULL;
newv = xcalloc((size_t)(blklen(v) + 1), sizeof(*newv));
onewv = newv;
while (*v)
*newv++ = Strsave(*v++);
return (onewv);
}
#ifdef NOTUSED
char *
strstr(char *s, char *t)
{
do {
char *ss;
char *tt;
ss = s;
tt = t;
do
if (*tt == '\0')
return (s);
while (*ss++ == *tt++);
} while (*s++ != '\0');
return (NULL);
}
#endif /* NOTUSED */
#ifndef SHORT_STRINGS
char *
strspl(char *cp, char *dp)
{
char *ep, *p, *q;
if (!cp)
cp = "";
if (!dp)
dp = "";
for (p = cp; *p++;)
continue;
for (q = dp; *q++;)
continue;
ep = xmalloc((size_t)(((p - cp) + (q - dp) - 1) * sizeof(*ep)));
for (p = ep, q = cp; *p++ = *q++;)
continue;
for (p--, q = dp; *p++ = *q++;)
continue;
return (ep);
}
#endif
Char **
blkspl(Char **up, Char **vp)
{
Char **wp;
wp = xcalloc((size_t)(blklen(up) + blklen(vp) + 1), sizeof(*wp));
(void)blkcpy(wp, up);
return (blkcat(wp, vp));
}
Char
lastchr(Char *cp)
{
if (!cp)
return (0);
if (!*cp)
return (0);
while (cp[1])
cp++;
return (*cp);
}
/*
* This routine is called after an error to close up
* any units which may have been left open accidentally.
*/
void
closem(void)
{
int f;
int nofile;
#ifdef F_CLOSEM
nofile = FOLDSTD + 1;
if (fcntl(nofile, F_CLOSEM, 0) == -1)
#endif
nofile = NOFILE;
for (f = 0; f < nofile; f++)
if (f != SHIN && f != SHOUT && f != SHERR && f != OLDSTD &&
f != FSHTTY)
(void) close(f);
}
void
donefds(void)
{
(void)close(0);
(void)close(1);
(void)close(2);
didfds = 0;
}
/*
* Move descriptor i to j.
* If j is -1 then we just want to get i to a safe place,
* i.e. to a unit > 2. This also happens in dcopy.
*/
int
dmove(int i, int j)
{
if (i == j || i < 0)
return (i);
if (j >= 0) {
(void)dup2(i, j);
if (j != i)
(void)close(i);
return (j);
}
j = dcopy(i, j);
if (j != i)
(void)close(i);
return (j);
}
int
dcopy(int i, int j)
{
if (i == j || i < 0 || (j < 0 && i > 2))
return (i);
if (j >= 0) {
(void)dup2(i, j);
return (j);
}
return (renum(i, j));
}
static int
renum(int i, int j)
{
int k;
k = dup(i);
if (k < 0)
return (-1);
if (j == -1 && k > 2)
return (k);
if (k != j) {
j = renum(k, j);
(void)close(k);
return (j);
}
return (k);
}
/*
* Left shift a command argument list, discarding
* the first c arguments. Used in "shift" commands
* as well as by commands like "repeat".
*/
void
lshift(Char **v, size_t c)
{
Char **u;
for (u = v; *u && c-- > 0; u++)
xfree((ptr_t) *u);
(void)blkcpy(v, u);
}
int
number(Char *cp)
{
if (!cp)
return(0);
if (*cp == '-') {
cp++;
if (!Isdigit(*cp))
return (0);
cp++;
}
while (*cp && Isdigit(*cp))
cp++;
return (*cp == 0);
}
Char **
copyblk(Char **v)
{
Char **nv;
nv = xcalloc((size_t)(blklen(v) + 1), sizeof(*nv));
return (blkcpy(nv, v));
}
#ifndef SHORT_STRINGS
char *
strend(char *cp)
{
if (!cp)
return (cp);
while (*cp)
cp++;
return (cp);
}
#endif /* SHORT_STRINGS */
Char *
strip(Char *cp)
{
Char *dp;
dp = cp;
if (!cp)
return (cp);
while ((*dp++ &= TRIM) != '\0')
continue;
return (cp);
}
Char *
quote(Char *cp)
{
Char *dp;
dp = cp;
if (!cp)
return (cp);
while (*dp != '\0')
*dp++ |= QUOTE;
return (cp);
}
void
udvar(Char *name)
{
setname(vis_str(name));
stderror(ERR_NAME | ERR_UNDVAR);
/* NOTREACHED */
}
int
prefix(Char *sub, Char *str)
{
for (;;) {
if (*sub == 0)
return (1);
if (*str == 0)
return (0);
if (*sub++ != *str++)
return (0);
}
}

640
bin/csh/parse.c Normal file
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@ -0,0 +1,640 @@
/* $NetBSD: parse.c,v 1.17 2007/07/16 18:26:10 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)parse.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: parse.c,v 1.17 2007/07/16 18:26:10 christos Exp $");
#endif
#endif /* not lint */
#include <sys/types.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "csh.h"
#include "extern.h"
static void asyntax(struct wordent *, struct wordent *);
static void asyn0(struct wordent *, struct wordent *);
static void asyn3(struct wordent *, struct wordent *);
static struct wordent *freenod(struct wordent *, struct wordent *);
static struct command *syn0(struct wordent *, struct wordent *, int);
static struct command *syn1(struct wordent *, struct wordent *, int);
static struct command *syn1a(struct wordent *, struct wordent *, int);
static struct command *syn1b(struct wordent *, struct wordent *, int);
static struct command *syn2(struct wordent *, struct wordent *, int);
static struct command *syn3(struct wordent *, struct wordent *, int);
#define ALEFT 21 /* max of 20 alias expansions */
#define HLEFT 11 /* max of 10 history expansions */
/*
* Perform aliasing on the word list lex
* Do a (very rudimentary) parse to separate into commands.
* If word 0 of a command has an alias, do it.
* Repeat a maximum of 20 times.
*/
static int aleft;
extern int hleft;
void
alias(struct wordent *lexp)
{
jmp_buf osetexit;
aleft = ALEFT;
hleft = HLEFT;
getexit(osetexit);
(void)setexit();
if (haderr) {
resexit(osetexit);
reset();
}
if (--aleft == 0)
stderror(ERR_ALIASLOOP);
asyntax(lexp->next, lexp);
resexit(osetexit);
}
static void
asyntax(struct wordent *p1, struct wordent *p2)
{
while (p1 != p2)
if (any(";&\n", p1->word[0]))
p1 = p1->next;
else {
asyn0(p1, p2);
return;
}
}
static void
asyn0(struct wordent *p1, struct wordent *p2)
{
struct wordent *p;
int l;
l = 0;
for (p = p1; p != p2; p = p->next)
switch (p->word[0]) {
case '(':
l++;
continue;
case ')':
l--;
if (l < 0)
stderror(ERR_TOOMANYRP);
continue;
case '>':
if (p->next != p2 && eq(p->next->word, STRand))
p = p->next;
continue;
case '&':
case '|':
case ';':
case '\n':
if (l != 0)
continue;
asyn3(p1, p);
asyntax(p->next, p2);
return;
}
if (l == 0)
asyn3(p1, p2);
}
static void
asyn3(struct wordent *p1, struct wordent *p2)
{
struct varent *ap;
struct wordent alout;
int redid;
if (p1 == p2)
return;
if (p1->word[0] == '(') {
for (p2 = p2->prev; p2->word[0] != ')'; p2 = p2->prev)
if (p2 == p1)
return;
if (p2 == p1->next)
return;
asyn0(p1->next, p2);
return;
}
ap = adrof1(p1->word, &aliases);
if (ap == 0)
return;
alhistp = p1->prev;
alhistt = p2;
alvec = ap->vec;
redid = lex(&alout);
alhistp = alhistt = 0;
alvec = 0;
if (seterr) {
freelex(&alout);
stderror(ERR_OLD);
}
if (p1->word[0] && eq(p1->word, alout.next->word)) {
Char *cp;
cp = alout.next->word;
alout.next->word = Strspl(STRQNULL, cp);
xfree((ptr_t) cp);
}
p1 = freenod(p1, redid ? p2 : p1->next);
if (alout.next != &alout) {
p1->next->prev = alout.prev->prev;
alout.prev->prev->next = p1->next;
alout.next->prev = p1;
p1->next = alout.next;
xfree((ptr_t)alout.prev->word);
xfree((ptr_t)(alout.prev));
}
reset(); /* throw! */
}
static struct wordent *
freenod(struct wordent *p1, struct wordent *p2)
{
struct wordent *retp;
retp = p1->prev;
while (p1 != p2) {
xfree((ptr_t)p1->word);
p1 = p1->next;
xfree((ptr_t) (p1->prev));
}
retp->next = p2;
p2->prev = retp;
return (retp);
}
#define PHERE 1
#define PIN 2
#define POUT 4
#define PERR 8
/*
* syntax
* empty
* syn0
*/
struct command *
syntax(struct wordent *p1, struct wordent *p2, int flags)
{
while (p1 != p2)
if (any(";&\n", p1->word[0]))
p1 = p1->next;
else
return (syn0(p1, p2, flags));
return (0);
}
/*
* syn0
* syn1
* syn1 & syntax
*/
static struct command *
syn0(struct wordent *p1, struct wordent *p2, int flags)
{
struct wordent *p;
struct command *t, *t1;
int l;
l = 0;
for (p = p1; p != p2; p = p->next)
switch (p->word[0]) {
case '(':
l++;
continue;
case ')':
l--;
if (l < 0)
seterror(ERR_TOOMANYRP);
continue;
case '|':
if (p->word[1] == '|')
continue;
/* FALLTHROUGH */
case '>':
if (p->next != p2 && eq(p->next->word, STRand))
p = p->next;
continue;
case '&':
if (l != 0)
break;
if (p->word[1] == '&')
continue;
t1 = syn1(p1, p, flags);
if (t1->t_dtyp == NODE_LIST ||
t1->t_dtyp == NODE_AND ||
t1->t_dtyp == NODE_OR) {
t = (struct command *)xcalloc(1, sizeof(*t));
t->t_dtyp = NODE_PAREN;
t->t_dflg = F_AMPERSAND | F_NOINTERRUPT;
t->t_dspr = t1;
t1 = t;
}
else
t1->t_dflg |= F_AMPERSAND | F_NOINTERRUPT;
t = (struct command *)xcalloc(1, sizeof(*t));
t->t_dtyp = NODE_LIST;
t->t_dflg = 0;
t->t_dcar = t1;
t->t_dcdr = syntax(p, p2, flags);
return (t);
}
if (l == 0)
return (syn1(p1, p2, flags));
seterror(ERR_TOOMANYLP);
return (0);
}
/*
* syn1
* syn1a
* syn1a ; syntax
*/
static struct command *
syn1(struct wordent *p1, struct wordent *p2, int flags)
{
struct wordent *p;
struct command *t;
int l;
l = 0;
for (p = p1; p != p2; p = p->next)
switch (p->word[0]) {
case '(':
l++;
continue;
case ')':
l--;
continue;
case ';':
case '\n':
if (l != 0)
break;
t = (struct command *) xcalloc(1, sizeof(*t));
t->t_dtyp = NODE_LIST;
t->t_dcar = syn1a(p1, p, flags);
t->t_dcdr = syntax(p->next, p2, flags);
if (t->t_dcdr == 0)
t->t_dcdr = t->t_dcar, t->t_dcar = 0;
return (t);
}
return (syn1a(p1, p2, flags));
}
/*
* syn1a
* syn1b
* syn1b || syn1a
*/
static struct command *
syn1a(struct wordent *p1, struct wordent *p2, int flags)
{
struct wordent *p;
struct command *t;
int l;
l = 0;
for (p = p1; p != p2; p = p->next)
switch (p->word[0]) {
case '(':
l++;
continue;
case ')':
l--;
continue;
case '|':
if (p->word[1] != '|')
continue;
if (l == 0) {
t = (struct command *)xcalloc(1, sizeof(*t));
t->t_dtyp = NODE_OR;
t->t_dcar = syn1b(p1, p, flags);
t->t_dcdr = syn1a(p->next, p2, flags);
t->t_dflg = 0;
return (t);
}
continue;
}
return (syn1b(p1, p2, flags));
}
/*
* syn1b
* syn2
* syn2 && syn1b
*/
static struct command *
syn1b(struct wordent *p1, struct wordent *p2, int flags)
{
struct wordent *p;
struct command *t;
int l;
l = 0;
for (p = p1; p != p2; p = p->next)
switch (p->word[0]) {
case '(':
l++;
continue;
case ')':
l--;
continue;
case '&':
if (p->word[1] == '&' && l == 0) {
t = (struct command *)xcalloc(1, sizeof(*t));
t->t_dtyp = NODE_AND;
t->t_dcar = syn2(p1, p, flags);
t->t_dcdr = syn1b(p->next, p2, flags);
t->t_dflg = 0;
return (t);
}
continue;
}
return (syn2(p1, p2, flags));
}
/*
* syn2
* syn3
* syn3 | syn2
* syn3 |& syn2
*/
static struct command *
syn2(struct wordent *p1, struct wordent *p2, int flags)
{
struct wordent *p, *pn;
struct command *t;
int f, l;
l = 0;
for (p = p1; p != p2; p = p->next)
switch (p->word[0]) {
case '(':
l++;
continue;
case ')':
l--;
continue;
case '|':
if (l != 0)
continue;
t = (struct command *)xcalloc(1, sizeof(*t));
f = flags | POUT;
pn = p->next;
if (pn != p2 && pn->word[0] == '&') {
f |= PERR;
t->t_dflg |= F_STDERR;
}
t->t_dtyp = NODE_PIPE;
t->t_dcar = syn3(p1, p, f);
if (pn != p2 && pn->word[0] == '&')
p = pn;
t->t_dcdr = syn2(p->next, p2, flags | PIN);
return (t);
}
return (syn3(p1, p2, flags));
}
static char RELPAR[] = {'<', '>', '(', ')', '\0'};
/*
* syn3
* ( syn0 ) [ < in ] [ > out ]
* word word* [ < in ] [ > out ]
* KEYWORD ( word* ) word* [ < in ] [ > out ]
*
* KEYWORD = (@ exit foreach if set switch test while)
*/
static struct command *
syn3(struct wordent *p1, struct wordent *p2, int flags)
{
struct wordent *lp, *p, *rp;
struct command *t;
Char **av;
int c, l, n;
int specp;
specp = 0;
if (p1 != p2) {
p = p1;
again:
switch (srchx(p->word)) {
case T_ELSE:
p = p->next;
if (p != p2)
goto again;
break;
case T_EXIT:
case T_FOREACH:
case T_IF:
case T_LET:
case T_SET:
case T_SWITCH:
case T_WHILE:
specp = 1;
break;
}
}
n = 0;
l = 0;
for (p = p1; p != p2; p = p->next)
switch (p->word[0]) {
case '(':
if (specp)
n++;
l++;
continue;
case ')':
if (specp)
n++;
l--;
continue;
case '>':
case '<':
if (l != 0) {
if (specp)
n++;
continue;
}
if (p->next == p2)
continue;
if (any(RELPAR, p->next->word[0]))
continue;
n--;
continue;
default:
if (!specp && l != 0)
continue;
n++;
continue;
}
if (n < 0)
n = 0;
t = (struct command *)xcalloc(1, sizeof(*t));
av = (Char **)xcalloc((size_t)(n + 1), sizeof(Char **));
t->t_dcom = av;
n = 0;
if (p2->word[0] == ')')
t->t_dflg = F_NOFORK;
lp = 0;
rp = 0;
l = 0;
for (p = p1; p != p2; p = p->next) {
c = p->word[0];
switch (c) {
case '(':
if (l == 0) {
if (lp != 0 && !specp)
seterror(ERR_BADPLP);
lp = p->next;
}
l++;
goto savep;
case ')':
l--;
if (l == 0)
rp = p;
goto savep;
case '>':
if (l != 0)
goto savep;
if (p->word[1] == '>')
t->t_dflg |= F_APPEND;
if (p->next != p2 && eq(p->next->word, STRand)) {
t->t_dflg |= F_STDERR, p = p->next;
if (flags & (POUT | PERR)) {
seterror(ERR_OUTRED);
continue;
}
}
if (p->next != p2 && eq(p->next->word, STRbang))
t->t_dflg |= F_OVERWRITE, p = p->next;
if (p->next == p2) {
seterror(ERR_MISRED);
continue;
}
p = p->next;
if (any(RELPAR, p->word[0])) {
seterror(ERR_MISRED);
continue;
}
if ((flags & POUT) && ((flags & PERR) == 0 || t->t_drit))
seterror(ERR_OUTRED);
else
t->t_drit = Strsave(p->word);
continue;
case '<':
if (l != 0)
goto savep;
if (p->word[1] == '<')
t->t_dflg |= F_READ;
if (p->next == p2) {
seterror(ERR_MISRED);
continue;
}
p = p->next;
if (any(RELPAR, p->word[0])) {
seterror(ERR_MISRED);
continue;
}
if ((flags & PHERE) && (t->t_dflg & F_READ))
seterror(ERR_REDPAR);
else if ((flags & PIN) || t->t_dlef)
seterror(ERR_INRED);
else
t->t_dlef = Strsave(p->word);
continue;
savep:
if (!specp)
continue;
/* FALLTHROUGH */
default:
if (l != 0 && !specp)
continue;
if (seterr == 0)
av[n] = Strsave(p->word);
n++;
continue;
}
}
if (lp != 0 && !specp) {
if (n != 0)
seterror(ERR_BADPLPS);
t->t_dtyp = NODE_PAREN;
t->t_dspr = syn0(lp, rp, PHERE);
}
else {
if (n == 0)
seterror(ERR_NULLCOM);
t->t_dtyp = NODE_COMMAND;
}
return (t);
}
void
freesyn(struct command *t)
{
Char **v;
if (t == 0)
return;
switch (t->t_dtyp) {
case NODE_COMMAND:
for (v = t->t_dcom; *v; v++)
xfree((ptr_t) * v);
xfree((ptr_t)(t->t_dcom));
xfree((ptr_t)t->t_dlef);
xfree((ptr_t)t->t_drit);
break;
case NODE_PAREN:
freesyn(t->t_dspr);
xfree((ptr_t)t->t_dlef);
xfree((ptr_t)t->t_drit);
break;
case NODE_AND:
case NODE_OR:
case NODE_PIPE:
case NODE_LIST:
freesyn(t->t_dcar), freesyn(t->t_dcdr);
break;
}
xfree((ptr_t)t);
}

44
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/* $NetBSD: pathnames.h,v 1.8 2003/08/07 09:05:06 agc Exp $ */
/*
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)pathnames.h 8.1 (Berkeley) 5/31/93
*/
#ifndef _PATHNAMES_H_
#define _PATHNAMES_H_
#define _PATH_BIN "/bin"
#define _PATH_DOTCSHRC "/etc/csh.cshrc"
#define _PATH_DOTLOGIN "/etc/csh.login"
#define _PATH_DOTLOGOUT "/etc/csh.logout"
#define _PATH_LOGIN "/usr/bin/login"
#define _PATH_USRBIN "/usr/bin"
#endif /* !_PATHNAMES_H_ */

1359
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104
bin/csh/proc.h Normal file
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/* $NetBSD: proc.h,v 1.14 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)proc.h 8.1 (Berkeley) 5/31/93
*/
#ifndef _PROC_H_
#define _PROC_H_
/*
* Structure for each process the shell knows about:
* allocated and filled by pcreate.
* flushed by pflush; freeing always happens at top level
* so the interrupt level has less to worry about.
* processes are related to "friends" when in a pipeline;
* p_friends links makes a circular list of such jobs
*/
struct process {
struct process *p_next; /* next in global "proclist" */
struct process *p_friends; /* next in job list (or self) */
struct directory *p_cwd; /* cwd of the job (only in head) */
int p_flags; /* various job status flags */
int p_reason; /* reason for entering this state */
int p_index; /* shorthand job index */
pid_t p_pid;
pid_t p_jobid; /* pid of job leader */
/* if a job is stopped/background p_jobid gives its pgrp */
struct timespec p_btime; /* begin time */
struct timespec p_etime; /* end time */
struct rusage p_rusage;
Char *p_command; /* first PMAXLEN chars of command */
};
/* flag values for p_flags */
#define PRUNNING (1<<0) /* running */
#define PSTOPPED (1<<1) /* stopped */
#define PNEXITED (1<<2) /* normally exited */
#define PAEXITED (1<<3) /* abnormally exited */
#define PSIGNALED (1<<4) /* terminated by a signal != SIGINT */
#define PNOTIFY (1<<5) /* notify async when done */
#define PTIME (1<<6) /* job times should be printed */
#define PAWAITED (1<<7) /* top level is waiting for it */
#define PFOREGND (1<<8) /* started in shells pgrp */
#define PDUMPED (1<<9) /* process dumped core */
#define PERR (1<<10) /* diagnostic output also piped out */
#define PPOU (1<<11) /* piped output */
#define PREPORTED (1<<12) /* status has been reported */
#define PINTERRUPTED (1<<13) /* job stopped via interrupt signal */
#define PPTIME (1<<14) /* time individual process */
#define PNEEDNOTE (1<<15) /* notify as soon as practical */
#define PALLSTATES (PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED)
#define PMAXLEN 80
/* defines for arguments to pprint */
#define NUMBER 01
#define NAME 02
#define REASON 04
#define AMPERSAND 010
#define FANCY 020
#define SHELLDIR 040 /* print shell's dir if not the same */
#define JOBDIR 0100 /* print job's dir if not the same */
#define AREASON 0200
struct process proclist; /* list head of all processes */
int pnoprocesses; /* pchild found nothing to wait for */
struct process *pholdjob; /* one level stack of current jobs */
struct process *pcurrjob; /* current job */
struct process *pcurrent; /* current job in table */
struct process *pprevious; /* previous job in table */
int pmaxindex; /* current maximum job index */
#endif /* !_PROC_H_ */

646
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/* $NetBSD: sem.c,v 1.29 2011/08/29 14:51:17 joerg Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)sem.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: sem.c,v 1.29 2011/08/29 14:51:17 joerg Exp $");
#endif
#endif /* not lint */
#include <sys/ioctl.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "csh.h"
#include "extern.h"
#include "proc.h"
__dead static void vffree(int);
static Char *splicepipe(struct command *t, Char *);
static void doio(struct command *t, int *, int *);
static void chkclob(char *);
void
execute(struct command *t, int wtty, int *pipein, int *pipeout)
{
static sigset_t csigset, ocsigset;
static int nosigchld = 0, onosigchld = 0;
volatile int wanttty = wtty;
struct biltins * volatile bifunc;
int pv[2], pid;
sigset_t nsigset;
int forked;
UNREGISTER(forked);
UNREGISTER(bifunc);
UNREGISTER(wanttty);
forked = 0;
pid = 0;
if (t == 0)
return;
if (t->t_dflg & F_AMPERSAND)
wanttty = 0;
switch (t->t_dtyp) {
case NODE_COMMAND:
if ((t->t_dcom[0][0] & (QUOTE | TRIM)) == QUOTE)
(void)Strcpy(t->t_dcom[0], t->t_dcom[0] + 1);
if ((t->t_dflg & F_REPEAT) == 0)
Dfix(t); /* $ " ' \ */
if (t->t_dcom[0] == 0)
return;
/* FALLTHROUGH */
case NODE_PAREN:
if (t->t_dflg & F_PIPEOUT)
mypipe(pipeout);
/*
* Must do << early so parent will know where input pointer should be.
* If noexec then this is all we do.
*/
if (t->t_dflg & F_READ) {
(void)close(0);
heredoc(t->t_dlef);
if (noexec)
(void)close(0);
}
set(STRstatus, Strsave(STR0));
/*
* This mess is the necessary kludge to handle the prefix builtins:
* nice, nohup, time. These commands can also be used by themselves,
* and this is not handled here. This will also work when loops are
* parsed.
*/
while (t->t_dtyp == NODE_COMMAND)
if (eq(t->t_dcom[0], STRnice)) {
if (t->t_dcom[1]) {
if (strchr("+-", t->t_dcom[1][0])) {
if (t->t_dcom[2]) {
setname("nice");
t->t_nice =
getn(t->t_dcom[1]);
lshift(t->t_dcom, 2);
t->t_dflg |= F_NICE;
}
else
break;
} else {
t->t_nice = 4;
lshift(t->t_dcom, 1);
t->t_dflg |= F_NICE;
}
} else
break;
} else if (eq(t->t_dcom[0], STRnohup)) {
if (t->t_dcom[1]) {
t->t_dflg |= F_NOHUP;
lshift(t->t_dcom, 1);
}
else
break;
} else if (eq(t->t_dcom[0], STRtime)) {
if (t->t_dcom[1]) {
t->t_dflg |= F_TIME;
lshift(t->t_dcom, 1);
}
else
break;
} else
break;
/* is it a command */
if (t->t_dtyp == NODE_COMMAND) {
/*
* Check if we have a builtin function and remember which one.
*/
bifunc = isbfunc(t);
if (noexec && bifunc != NULL) {
/*
* Continue for builtins that are part of the scripting language
*/
if (bifunc->bfunct != dobreak && bifunc->bfunct != docontin &&
bifunc->bfunct != doelse && bifunc->bfunct != doend &&
bifunc->bfunct != doforeach && bifunc->bfunct != dogoto &&
bifunc->bfunct != doif && bifunc->bfunct != dorepeat &&
bifunc->bfunct != doswbrk && bifunc->bfunct != doswitch &&
bifunc->bfunct != dowhile && bifunc->bfunct != dozip)
break;
}
}
else { /* not a command */
bifunc = NULL;
if (noexec)
break;
}
/*
* We fork only if we are timed, or are not the end of a parenthesized
* list and not a simple builtin function. Simple meaning one that is
* not pipedout, niced, nohupped, or &'d. It would be nice(?) to not
* fork in some of these cases.
*/
/*
* Prevent forking cd, pushd, popd, chdir cause this will cause the
* shell not to change dir!
*/
if (bifunc && (bifunc->bfunct == dochngd ||
bifunc->bfunct == dopushd ||
bifunc->bfunct == dopopd))
t->t_dflg &= ~(F_NICE);
if (((t->t_dflg & F_TIME) || ((t->t_dflg & F_NOFORK) == 0 &&
(!bifunc || t->t_dflg &
(F_PIPEOUT | F_AMPERSAND | F_NICE | F_NOHUP)))) ||
/*
* We have to fork for eval too.
*/
(bifunc && (t->t_dflg & (F_PIPEIN | F_PIPEOUT)) != 0 &&
bifunc->bfunct == doeval)) {
if (t->t_dtyp == NODE_PAREN ||
t->t_dflg & (F_REPEAT | F_AMPERSAND) || bifunc) {
forked++;
/*
* We need to block SIGCHLD here, so that if the process does
* not die before we can set the process group
*/
if (wanttty >= 0 && !nosigchld) {
sigemptyset(&nsigset);
(void)sigaddset(&nsigset, SIGCHLD);
(void)sigprocmask(SIG_BLOCK, &nsigset, &csigset);
nosigchld = 1;
}
pid = pfork(t, wanttty);
if (pid == 0 && nosigchld) {
(void)sigprocmask(SIG_SETMASK, &csigset, NULL);
nosigchld = 0;
}
else if (pid != 0 && (t->t_dflg & F_AMPERSAND))
backpid = pid;
}
else {
int ochild, osetintr, ohaderr, odidfds;
int oSHIN, oSHOUT, oSHERR, oOLDSTD, otpgrp;
sigset_t osigset;
/*
* Prepare for the vfork by saving everything that the child
* corrupts before it exec's. Note that in some signal
* implementations which keep the signal info in user space
* (e.g. Sun's) it will also be necessary to save and restore
* the current sigaction's for the signals the child touches
* before it exec's.
*/
if (wanttty >= 0 && !nosigchld && !noexec) {
sigemptyset(&nsigset);
(void)sigaddset(&nsigset, SIGCHLD);
(void)sigprocmask(SIG_BLOCK, &nsigset, &csigset);
nosigchld = 1;
}
sigemptyset(&nsigset);
(void)sigaddset(&nsigset, SIGCHLD);
(void)sigaddset(&nsigset, SIGINT);
(void)sigprocmask(SIG_BLOCK, &nsigset, &osigset);
ochild = child;
osetintr = setintr;
ohaderr = haderr;
odidfds = didfds;
oSHIN = SHIN;
oSHOUT = SHOUT;
oSHERR = SHERR;
oOLDSTD = OLDSTD;
otpgrp = tpgrp;
ocsigset = csigset;
onosigchld = nosigchld;
Vsav = Vdp = 0;
Vexpath = 0;
Vt = 0;
pid = vfork();
if (pid < 0) {
(void)sigprocmask(SIG_SETMASK, &osigset, NULL);
stderror(ERR_NOPROC);
}
forked++;
if (pid) { /* parent */
child = ochild;
setintr = osetintr;
haderr = ohaderr;
didfds = odidfds;
SHIN = oSHIN;
SHOUT = oSHOUT;
SHERR = oSHERR;
OLDSTD = oOLDSTD;
tpgrp = otpgrp;
csigset = ocsigset;
nosigchld = onosigchld;
xfree((ptr_t) Vsav);
Vsav = 0;
xfree((ptr_t) Vdp);
Vdp = 0;
xfree((ptr_t) Vexpath);
Vexpath = 0;
blkfree((Char **) Vt);
Vt = 0;
/* this is from pfork() */
palloc(pid, t);
(void)sigprocmask(SIG_SETMASK, &osigset, NULL);
}
else { /* child */
/* this is from pfork() */
int pgrp;
int ignint = 0;
if (nosigchld) {
(void)sigprocmask(SIG_SETMASK, &csigset, NULL);
nosigchld = 0;
}
if (setintr)
ignint =
(tpgrp == -1 &&
(t->t_dflg & F_NOINTERRUPT))
|| (gointr && eq(gointr, STRminus));
pgrp = pcurrjob ? pcurrjob->p_jobid : getpid();
child++;
if (setintr) {
setintr = 0;
if (ignint) {
(void)signal(SIGINT, SIG_IGN);
(void)signal(SIGQUIT, SIG_IGN);
}
else {
(void)signal(SIGINT, vffree);
(void)signal(SIGQUIT, SIG_DFL);
}
if (wanttty >= 0) {
(void)signal(SIGTSTP, SIG_DFL);
(void)signal(SIGTTIN, SIG_DFL);
(void)signal(SIGTTOU, SIG_DFL);
}
(void)signal(SIGTERM, parterm);
}
else if (tpgrp == -1 &&
(t->t_dflg & F_NOINTERRUPT)) {
(void)signal(SIGINT, SIG_IGN);
(void)signal(SIGQUIT, SIG_IGN);
}
pgetty(wanttty, pgrp);
if (t->t_dflg & F_NOHUP)
(void)signal(SIGHUP, SIG_IGN);
if (t->t_dflg & F_NICE)
(void)setpriority(PRIO_PROCESS, 0, t->t_nice);
}
}
}
if (pid != 0) {
/*
* It would be better if we could wait for the whole job when we
* knew the last process had been started. Pwait, in fact, does
* wait for the whole job anyway, but this test doesn't really
* express our intentions.
*/
if (didfds == 0 && t->t_dflg & F_PIPEIN) {
(void)close(pipein[0]);
(void)close(pipein[1]);
}
if ((t->t_dflg & F_PIPEOUT) == 0) {
if (nosigchld) {
(void)sigprocmask(SIG_SETMASK, &csigset, NULL);
nosigchld = 0;
}
if ((t->t_dflg & F_AMPERSAND) == 0)
pwait();
}
break;
}
doio(t, pipein, pipeout);
if (t->t_dflg & F_PIPEOUT) {
(void)close(pipeout[0]);
(void)close(pipeout[1]);
}
/*
* Perform a builtin function. If we are not forked, arrange for
* possible stopping
*/
if (bifunc) {
func(t, bifunc);
if (forked)
exitstat();
break;
}
if (t->t_dtyp != NODE_PAREN)
doexec(NULL, t);
/*
* For () commands must put new 0,1,2 in FSH* and recurse
*/
(void) ioctl(OLDSTD = dcopy(0, FOLDSTD), FIOCLEX, NULL);
(void) ioctl(SHOUT = dcopy(1, FSHOUT), FIOCLEX, NULL);
(void) ioctl(SHERR = dcopy(2, FSHERR), FIOCLEX, NULL);
(void) close(SHIN);
SHIN = -1;
didfds = 0;
wanttty = -1;
t->t_dspr->t_dflg |= t->t_dflg & F_NOINTERRUPT;
execute(t->t_dspr, wanttty, NULL, NULL);
exitstat();
/* NOTREACHED */
case NODE_PIPE:
t->t_dcar->t_dflg |= F_PIPEOUT |
(t->t_dflg & (F_PIPEIN | F_AMPERSAND | F_STDERR | F_NOINTERRUPT));
execute(t->t_dcar, wanttty, pipein, pv);
t->t_dcdr->t_dflg |= F_PIPEIN | (t->t_dflg &
(F_PIPEOUT | F_AMPERSAND | F_NOFORK | F_NOINTERRUPT));
if (wanttty > 0)
wanttty = 0; /* got tty already */
execute(t->t_dcdr, wanttty, pv, pipeout);
break;
case NODE_LIST:
if (t->t_dcar) {
t->t_dcar->t_dflg |= t->t_dflg & F_NOINTERRUPT;
execute(t->t_dcar, wanttty, NULL, NULL);
/*
* In strange case of A&B make a new job after A
*/
if (t->t_dcar->t_dflg & F_AMPERSAND && t->t_dcdr &&
(t->t_dcdr->t_dflg & F_AMPERSAND) == 0)
pendjob();
}
if (t->t_dcdr) {
t->t_dcdr->t_dflg |= t->t_dflg &
(F_NOFORK | F_NOINTERRUPT);
execute(t->t_dcdr, wanttty, NULL, NULL);
}
break;
case NODE_OR:
case NODE_AND:
if (t->t_dcar) {
t->t_dcar->t_dflg |= t->t_dflg & F_NOINTERRUPT;
execute(t->t_dcar, wanttty, NULL, NULL);
if ((getn(value(STRstatus)) == 0) !=
(t->t_dtyp == NODE_AND))
return;
}
if (t->t_dcdr) {
t->t_dcdr->t_dflg |= t->t_dflg &
(F_NOFORK | F_NOINTERRUPT);
execute(t->t_dcdr, wanttty, NULL, NULL);
}
break;
}
/*
* Fall through for all breaks from switch
*
* If there will be no more executions of this command, flush all file
* descriptors. Places that turn on the F_REPEAT bit are responsible for
* doing donefds after the last re-execution
*/
if (didfds && !(t->t_dflg & F_REPEAT))
donefds();
}
static void
vffree(int i)
{
Char **v;
if ((v = gargv) != NULL) {
gargv = 0;
xfree((ptr_t) v);
}
if ((v = pargv) != NULL) {
pargv = 0;
xfree((ptr_t) v);
}
_exit(i);
/* NOTREACHED */
}
/*
* Expand and glob the words after an i/o redirection.
* If more than one word is generated, then update the command vector.
*
* This is done differently in all the shells:
* 1. in the bourne shell and ksh globbing is not performed
* 2. Bash/csh say ambiguous
* 3. zsh does i/o to/from all the files
* 4. itcsh concatenates the words.
*
* I don't know what is best to do. I think that Ambiguous is better
* than restructuring the command vector, because the user can get
* unexpected results. In any case, the command vector restructuring
* code is present and the user can choose it by setting noambiguous
*/
static Char *
splicepipe(struct command *t, Char *cp /* word after < or > */)
{
Char *blk[2];
if (adrof(STRnoambiguous)) {
Char **pv;
blk[0] = Dfix1(cp); /* expand $ */
blk[1] = NULL;
gflag = 0, tglob(blk);
if (gflag) {
pv = globall(blk);
if (pv == NULL) {
setname(vis_str(blk[0]));
xfree((ptr_t) blk[0]);
stderror(ERR_NAME | ERR_NOMATCH);
/* NOTREACHED */
}
gargv = NULL;
if (pv[1] != NULL) { /* we need to fix the command vector */
Char **av = blkspl(t->t_dcom, &pv[1]);
xfree((ptr_t) t->t_dcom);
t->t_dcom = av;
}
xfree((ptr_t) blk[0]);
blk[0] = pv[0];
xfree((ptr_t) pv);
}
}
else {
blk[0] = globone(blk[1] = Dfix1(cp), G_ERROR);
xfree((ptr_t) blk[1]);
}
return(blk[0]);
}
/*
* Perform io redirection.
* We may or maynot be forked here.
*/
static void
doio(struct command *t, int *pipein, int *pipeout)
{
Char *cp;
int fd, flags;
flags = t->t_dflg;
if (didfds || (flags & F_REPEAT))
return;
if ((flags & F_READ) == 0) {/* F_READ already done */
if (t->t_dlef) {
char tmp[MAXPATHLEN+1];
/*
* so < /dev/std{in,out,err} work
*/
(void)dcopy(SHIN, 0);
(void)dcopy(SHOUT, 1);
(void)dcopy(SHERR, 2);
cp = splicepipe(t, t->t_dlef);
(void)strlcpy(tmp, short2str(cp), sizeof(tmp));
xfree((ptr_t) cp);
if ((fd = open(tmp, O_RDONLY)) < 0) {
stderror(ERR_SYSTEM, tmp, strerror(errno));
/* NOTREACHED */
}
(void)dmove(fd, 0);
}
else if (flags & F_PIPEIN) {
(void)close(0);
(void)dup(pipein[0]);
(void)close(pipein[0]);
(void)close(pipein[1]);
}
else if ((flags & F_NOINTERRUPT) && tpgrp == -1) {
(void)close(0);
(void)open(_PATH_DEVNULL, O_RDONLY);
}
else {
(void)close(0);
(void)dup(OLDSTD);
(void)ioctl(0, FIONCLEX, NULL);
}
}
if (t->t_drit) {
char tmp[MAXPATHLEN+1];
cp = splicepipe(t, t->t_drit);
(void)strlcpy(tmp, short2str(cp), sizeof(tmp));
xfree((ptr_t) cp);
/*
* so > /dev/std{out,err} work
*/
(void)dcopy(SHOUT, 1);
(void)dcopy(SHERR, 2);
if ((flags & F_APPEND) &&
#ifdef O_APPEND
(fd = open(tmp, O_WRONLY | O_APPEND)) >= 0);
#else
(fd = open(tmp, O_WRONLY)) >= 0)
(void)lseek(1, (off_t) 0, SEEK_END);
#endif
else {
if (!(flags & F_OVERWRITE) && adrof(STRnoclobber)) {
if (flags & F_APPEND) {
stderror(ERR_SYSTEM, tmp, strerror(errno));
/* NOTREACHED */
}
chkclob(tmp);
}
if ((fd = open(tmp, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0) {
stderror(ERR_SYSTEM, tmp, strerror(errno));
/* NOTREACHED */
}
}
(void)dmove(fd, 1);
}
else if (flags & F_PIPEOUT) {
(void)close(1);
(void)dup(pipeout[1]);
}
else {
(void)close(1);
(void)dup(SHOUT);
(void)ioctl(1, FIONCLEX, NULL);
}
(void)close(2);
if (flags & F_STDERR) {
(void)dup(1);
}
else {
(void)dup(SHERR);
(void)ioctl(2, FIONCLEX, NULL);
}
didfds = 1;
}
void
mypipe(int *pv)
{
if (pipe(pv) < 0)
goto oops;
pv[0] = dmove(pv[0], -1);
pv[1] = dmove(pv[1], -1);
if (pv[0] >= 0 && pv[1] >= 0)
return;
oops:
stderror(ERR_PIPE);
/* NOTREACHED */
}
static void
chkclob(char *cp)
{
struct stat stb;
if (stat(cp, &stb) < 0)
return;
if (S_ISCHR(stb.st_mode))
return;
stderror(ERR_EXISTS, cp);
/* NOTREACHED */
}

820
bin/csh/set.c Normal file
View file

@ -0,0 +1,820 @@
/* $NetBSD: set.c,v 1.33 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)set.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: set.c,v 1.33 2013/07/16 17:47:43 christos Exp $");
#endif
#endif /* not lint */
#include <sys/types.h>
#include <stdarg.h>
#include <stdlib.h>
#ifndef SHORT_STRINGS
#include <string.h>
#endif /* SHORT_STRINGS */
#include "csh.h"
#include "extern.h"
static Char *getinx(Char *, int *);
static void asx(Char *, int, Char *);
static struct varent *getvx(Char *, int);
static Char *xset(Char *, Char ***);
static Char *operate(int, Char *, Char *);
static void putn1(int);
static struct varent *madrof(Char *, struct varent *);
static void unsetv1(struct varent *);
static void exportpath(Char **);
static void balance(struct varent *, int, int);
/*
* C Shell
*/
static void
update_vars(Char *vp)
{
if (eq(vp, STRpath)) {
struct varent *pt = adrof(STRpath);
if (pt == NULL)
stderror(ERR_NAME | ERR_UNDVAR);
else {
exportpath(pt->vec);
dohash(NULL, NULL);
}
}
else if (eq(vp, STRhistchars)) {
Char *pn = value(STRhistchars);
HIST = *pn++;
HISTSUB = *pn;
}
else if (eq(vp, STRuser)) {
Setenv(STRUSER, value(vp));
Setenv(STRLOGNAME, value(vp));
}
else if (eq(vp, STRwordchars)) {
word_chars = value(vp);
}
else if (eq(vp, STRterm))
Setenv(STRTERM, value(vp));
else if (eq(vp, STRhome)) {
Char *cp;
cp = Strsave(value(vp)); /* get the old value back */
/*
* convert to canonical pathname (possibly resolving symlinks)
*/
cp = dcanon(cp, cp);
set(vp, Strsave(cp)); /* have to save the new val */
/* and now mirror home with HOME */
Setenv(STRHOME, cp);
/* fix directory stack for new tilde home */
dtilde();
xfree((ptr_t)cp);
}
#ifdef FILEC
else if (eq(vp, STRfilec))
filec = 1;
#endif
#ifdef EDIT
else if (eq(vp, STRedit)) {
HistEvent ev;
editing = 1;
el = el_init_fd(getprogname(), cshin, cshout, csherr,
SHIN, SHOUT, SHERR);
el_set(el, EL_EDITOR, "emacs");
el_set(el, EL_PROMPT, printpromptstr);
hi = history_init();
history(hi, &ev, H_SETSIZE, getn(value(STRhistory)));
loadhist(Histlist.Hnext);
el_set(el, EL_HIST, history, hi);
}
#endif
}
void
/*ARGSUSED*/
doset(Char **v, struct command *t)
{
Char op, *p, **vecp, *vp;
int subscr = 0; /* XXX: GCC */
int hadsub;
v++;
p = *v++;
if (p == 0) {
prvars();
return;
}
do {
hadsub = 0;
vp = p;
if (letter(*p))
for (; alnum(*p); p++)
continue;
if (vp == p || !letter(*vp))
stderror(ERR_NAME | ERR_VARBEGIN);
if ((p - vp) > MAXVARLEN)
stderror(ERR_NAME | ERR_VARTOOLONG);
if (*p == '[') {
hadsub++;
p = getinx(p, &subscr);
}
if ((op = *p) != '\0') {
*p++ = 0;
if (*p == 0 && *v && **v == '(')
p = *v++;
}
else if (*v && eq(*v, STRequal)) {
op = '=', v++;
if (*v)
p = *v++;
}
if (op && op != '=')
stderror(ERR_NAME | ERR_SYNTAX);
if (eq(p, STRLparen)) {
Char **e = v;
if (hadsub)
stderror(ERR_NAME | ERR_SYNTAX);
for (;;) {
if (!*e)
stderror(ERR_NAME | ERR_MISSING, ')');
if (**e == ')')
break;
e++;
}
p = *e;
*e = 0;
vecp = saveblk(v);
set1(vp, vecp, &shvhed);
*e = p;
v = e + 1;
}
else if (hadsub)
asx(vp, subscr, Strsave(p));
else
set(vp, Strsave(p));
update_vars(vp);
} while ((p = *v++) != NULL);
}
static Char *
getinx(Char *cp, int *ip)
{
*ip = 0;
*cp++ = 0;
while (*cp && Isdigit(*cp))
*ip = *ip * 10 + *cp++ - '0';
if (*cp++ != ']')
stderror(ERR_NAME | ERR_SUBSCRIPT);
return (cp);
}
static void
asx(Char *vp, int subscr, Char *p)
{
struct varent *v;
v = getvx(vp, subscr);
xfree((ptr_t) v->vec[subscr - 1]);
v->vec[subscr - 1] = globone(p, G_APPEND);
}
static struct varent *
getvx(Char *vp, int subscr)
{
struct varent *v;
v = adrof(vp);
if (v == 0)
udvar(vp);
if (subscr < 1 || subscr > blklen(v->vec))
stderror(ERR_NAME | ERR_RANGE);
return (v);
}
void
/*ARGSUSED*/
dolet(Char **v, struct command *t)
{
Char c, op, *p, *vp;
int subscr = 0; /* XXX: GCC */
int hadsub;
v++;
p = *v++;
if (p == 0) {
prvars();
return;
}
do {
hadsub = 0;
vp = p;
if (letter(*p))
for (; alnum(*p); p++)
continue;
if (vp == p || !letter(*vp))
stderror(ERR_NAME | ERR_VARBEGIN);
if ((p - vp) > MAXVARLEN)
stderror(ERR_NAME | ERR_VARTOOLONG);
if (*p == '[') {
hadsub++;
p = getinx(p, &subscr);
}
if (*p == 0 && *v)
p = *v++;
if ((op = *p) != '\0')
*p++ = 0;
else
stderror(ERR_NAME | ERR_ASSIGN);
if (*p == '\0' && *v == NULL)
stderror(ERR_NAME | ERR_ASSIGN);
vp = Strsave(vp);
if (op == '=') {
c = '=';
p = xset(p, &v);
}
else {
c = *p++;
if (any("+-", c)) {
if (c != op || *p)
stderror(ERR_NAME | ERR_UNKNOWNOP);
p = Strsave(STR1);
}
else {
if (any("<>", op)) {
if (c != op)
stderror(ERR_NAME | ERR_UNKNOWNOP);
c = *p++;
stderror(ERR_NAME | ERR_SYNTAX);
}
if (c != '=')
stderror(ERR_NAME | ERR_UNKNOWNOP);
p = xset(p, &v);
}
}
if (op == '=') {
if (hadsub)
asx(vp, subscr, p);
else
set(vp, p);
} else if (hadsub) {
struct varent *gv = getvx(vp, subscr);
asx(vp, subscr, operate(op, gv->vec[subscr - 1], p));
}
else
set(vp, operate(op, value(vp), p));
if (eq(vp, STRpath)) {
struct varent *pt = adrof(STRpath);
if (pt == NULL)
stderror(ERR_NAME | ERR_UNDVAR);
else {
exportpath(pt->vec);
dohash(NULL, NULL);
}
}
xfree((ptr_t) vp);
if (c != '=')
xfree((ptr_t) p);
} while ((p = *v++) != NULL);
}
static Char *
xset(Char *cp, Char ***vp)
{
Char *dp;
if (*cp) {
dp = Strsave(cp);
--(*vp);
xfree((ptr_t) ** vp);
**vp = dp;
}
return (putn(expr(vp)));
}
static Char *
operate(int op, Char *vp, Char *p)
{
Char opr[2], **v, *vec[5], **vecp;
int i;
v = vec;
vecp = v;
if (op != '=') {
if (*vp)
*v++ = vp;
opr[0] = (Char)op;
opr[1] = 0;
*v++ = opr;
if (op == '<' || op == '>')
*v++ = opr;
}
*v++ = p;
*v++ = 0;
i = expr(&vecp);
if (*vecp)
stderror(ERR_NAME | ERR_EXPRESSION);
return (putn(i));
}
static Char *putp;
Char *
putn(int n)
{
static Char numbers[15];
putp = numbers;
if (n < 0) {
n = -n;
*putp++ = '-';
}
if ((unsigned int)n == 0x80000000U) {
*putp++ = '2';
n = 147483648;
}
putn1(n);
*putp = 0;
return (Strsave(numbers));
}
static void
putn1(int n)
{
if (n > 9)
putn1(n / 10);
*putp++ = (Char)(n % 10 + '0');
}
int
getn(Char *cp)
{
int n, sign;
sign = 0;
if (cp[0] == '+' && cp[1])
cp++;
if (*cp == '-') {
sign++;
cp++;
if (!Isdigit(*cp))
stderror(ERR_NAME | ERR_BADNUM);
}
n = 0;
while (Isdigit(*cp))
n = n * 10 + *cp++ - '0';
if (*cp)
stderror(ERR_NAME | ERR_BADNUM);
return (sign ? -n : n);
}
Char *
value1(Char *var, struct varent *head)
{
struct varent *vp;
vp = adrof1(var, head);
return (vp == 0 || vp->vec[0] == 0 ? STRNULL : vp->vec[0]);
}
static struct varent *
madrof(Char *pat, struct varent *vp)
{
struct varent *vp1;
for (; vp; vp = vp->v_right) {
if (vp->v_left && (vp1 = madrof(pat, vp->v_left)))
return vp1;
if (Gmatch(vp->v_name, pat))
return vp;
}
return vp;
}
struct varent *
adrof1(Char *name, struct varent *v)
{
int cmp;
v = v->v_left;
while (v && ((cmp = *name - *v->v_name) ||
(cmp = Strcmp(name, v->v_name))))
if (cmp < 0)
v = v->v_left;
else
v = v->v_right;
return v;
}
/*
* The caller is responsible for putting value in a safe place
*/
void
set(Char *var, Char *val)
{
Char **vec;
vec = xmalloc(2 * sizeof(*vec));
vec[0] = val;
vec[1] = 0;
set1(var, vec, &shvhed);
}
void
set1(Char *var, Char **vec, struct varent *head)
{
Char **oldv;
oldv = vec;
gflag = 0;
tglob(oldv);
if (gflag) {
vec = globall(oldv);
if (vec == 0) {
blkfree(oldv);
stderror(ERR_NAME | ERR_NOMATCH);
}
blkfree(oldv);
gargv = 0;
}
setq(var, vec, head);
}
void
setq(Char *name, Char **vec, struct varent *p)
{
struct varent *c;
int f;
f = 0; /* tree hangs off the header's left link */
while ((c = p->v_link[f]) != NULL) {
if ((f = *name - *c->v_name) == 0 &&
(f = Strcmp(name, c->v_name)) == 0) {
blkfree(c->vec);
goto found;
}
p = c;
f = f > 0;
}
p->v_link[f] = c = xmalloc(sizeof(*c));
c->v_name = Strsave(name);
c->v_bal = 0;
c->v_left = c->v_right = 0;
c->v_parent = p;
balance(p, f, 0);
found:
trim(c->vec = vec);
}
void
/*ARGSUSED*/
unset(Char **v, struct command *t)
{
unset1(v, &shvhed);
if (adrof(STRhistchars) == 0) {
HIST = '!';
HISTSUB = '^';
}
else if (adrof(STRwordchars) == 0)
word_chars = STR_WORD_CHARS;
#ifdef FILEC
else if (adrof(STRfilec) == 0)
filec = 0;
#endif
#ifdef EDIT
else if (adrof(STRedit) == 0) {
el_end(el);
history_end(hi);
el = NULL;
hi = NULL;
editing = 0;
}
#endif
}
void
unset1(Char *v[], struct varent *head)
{
struct varent *vp;
int cnt;
while (*++v) {
cnt = 0;
while ((vp = madrof(*v, head->v_left)) != NULL)
unsetv1(vp), cnt++;
if (cnt == 0)
setname(vis_str(*v));
}
}
void
unsetv(Char *var)
{
struct varent *vp;
if ((vp = adrof1(var, &shvhed)) == 0)
udvar(var);
unsetv1(vp);
}
static void
unsetv1(struct varent *p)
{
struct varent *c, *pp;
int f;
/*
* Free associated memory first to avoid complications.
*/
blkfree(p->vec);
xfree((ptr_t) p->v_name);
/*
* If p is missing one child, then we can move the other into where p is.
* Otherwise, we find the predecessor of p, which is guaranteed to have no
* right child, copy it into p, and move its left child into it.
*/
if (p->v_right == 0)
c = p->v_left;
else if (p->v_left == 0)
c = p->v_right;
else {
for (c = p->v_left; c->v_right; c = c->v_right)
continue;
p->v_name = c->v_name;
p->vec = c->vec;
p = c;
c = p->v_left;
}
/*
* Move c into where p is.
*/
pp = p->v_parent;
f = pp->v_right == p;
if ((pp->v_link[f] = c) != NULL)
c->v_parent = pp;
/*
* Free the deleted node, and rebalance.
*/
xfree((ptr_t) p);
balance(pp, f, 1);
}
void
setNS(Char *cp)
{
set(cp, Strsave(STRNULL));
}
void
/*ARGSUSED*/
shift(Char **v, struct command *t)
{
struct varent *argv;
Char *name;
v++;
name = *v;
if (name == 0)
name = STRargv;
else
(void) strip(name);
argv = adrof(name);
if (argv == 0)
udvar(name);
if (argv->vec[0] == 0)
stderror(ERR_NAME | ERR_NOMORE);
lshift(argv->vec, 1);
update_vars(name);
}
static void
exportpath(Char **val)
{
Char exppath[BUFSIZE];
exppath[0] = 0;
if (val)
while (*val) {
if (Strlen(*val) + Strlen(exppath) + 2 > BUFSIZE) {
(void)fprintf(csherr,
"Warning: ridiculously long PATH truncated\n");
break;
}
(void)Strcat(exppath, *val++);
if (*val == 0 || eq(*val, STRRparen))
break;
(void)Strcat(exppath, STRcolon);
}
Setenv(STRPATH, exppath);
}
#ifndef lint
/*
* Lint thinks these have null effect
*/
/* macros to do single rotations on node p */
#define rright(p) (\
t = (p)->v_left,\
(t)->v_parent = (p)->v_parent,\
((p)->v_left = t->v_right) ? (t->v_right->v_parent = (p)) : 0,\
(t->v_right = (p))->v_parent = t,\
(p) = t)
#define rleft(p) (\
t = (p)->v_right,\
(t)->v_parent = (p)->v_parent,\
((p)->v_right = t->v_left) ? (t->v_left->v_parent = (p)) : 0,\
(t->v_left = (p))->v_parent = t,\
(p) = t)
#else
struct varent *
rleft(struct varent *p)
{
return (p);
}
struct varent *
rright(struct varent *p)
{
return (p);
}
#endif /* ! lint */
/*
* Rebalance a tree, starting at p and up.
* F == 0 means we've come from p's left child.
* D == 1 means we've just done a delete, otherwise an insert.
*/
static void
balance(struct varent *p, int f, int d)
{
struct varent *pp;
#ifndef lint
struct varent *t; /* used by the rotate macros */
#endif
int ff;
/*
* Ok, from here on, p is the node we're operating on; pp is its parent; f
* is the branch of p from which we have come; ff is the branch of pp which
* is p.
*/
for (; (pp = p->v_parent) != NULL; p = pp, f = ff) {
ff = pp->v_right == p;
if (f ^ d) { /* right heavy */
switch (p->v_bal) {
case -1: /* was left heavy */
p->v_bal = 0;
break;
case 0: /* was balanced */
p->v_bal = 1;
break;
case 1: /* was already right heavy */
switch (p->v_right->v_bal) {
case 1: /* single rotate */
pp->v_link[ff] = rleft(p);
p->v_left->v_bal = 0;
p->v_bal = 0;
break;
case 0: /* single rotate */
pp->v_link[ff] = rleft(p);
p->v_left->v_bal = 1;
p->v_bal = -1;
break;
case -1: /* double rotate */
(void) rright(p->v_right);
pp->v_link[ff] = rleft(p);
p->v_left->v_bal =
p->v_bal < 1 ? 0 : -1;
p->v_right->v_bal =
p->v_bal > -1 ? 0 : 1;
p->v_bal = 0;
break;
}
break;
}
}
else { /* left heavy */
switch (p->v_bal) {
case 1: /* was right heavy */
p->v_bal = 0;
break;
case 0: /* was balanced */
p->v_bal = -1;
break;
case -1: /* was already left heavy */
switch (p->v_left->v_bal) {
case -1: /* single rotate */
pp->v_link[ff] = rright(p);
p->v_right->v_bal = 0;
p->v_bal = 0;
break;
case 0: /* single rotate */
pp->v_link[ff] = rright(p);
p->v_right->v_bal = -1;
p->v_bal = 1;
break;
case 1: /* double rotate */
(void) rleft(p->v_left);
pp->v_link[ff] = rright(p);
p->v_left->v_bal =
p->v_bal < 1 ? 0 : -1;
p->v_right->v_bal =
p->v_bal > -1 ? 0 : 1;
p->v_bal = 0;
break;
}
break;
}
}
/*
* If from insert, then we terminate when p is balanced. If from
* delete, then we terminate when p is unbalanced.
*/
if ((p->v_bal == 0) ^ d)
break;
}
}
void
plist(struct varent *p)
{
struct varent *c;
sigset_t nsigset;
int len;
if (setintr) {
sigemptyset(&nsigset);
(void)sigaddset(&nsigset, SIGINT);
(void)sigprocmask(SIG_UNBLOCK, &nsigset, NULL);
}
for (;;) {
while (p->v_left)
p = p->v_left;
x:
if (p->v_parent == 0) /* is it the header? */
return;
len = blklen(p->vec);
(void)fprintf(cshout, "%s\t", short2str(p->v_name));
if (len != 1)
(void)fputc('(', cshout);
blkpr(cshout, p->vec);
if (len != 1)
(void)fputc(')', cshout);
(void)fputc('\n', cshout);
if (p->v_right) {
p = p->v_right;
continue;
}
do {
c = p;
p = p->v_parent;
} while (p->v_right == c);
goto x;
}
}

441
bin/csh/str.c Normal file
View file

@ -0,0 +1,441 @@
/* $NetBSD: str.c,v 1.15 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)str.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: str.c,v 1.15 2013/07/16 17:47:43 christos Exp $");
#endif
#endif /* not lint */
#define MALLOC_INCR 128
/*
* tc.str.c: Short string package
* This has been a lesson of how to write buggy code!
*/
#include <sys/types.h>
#include <stdarg.h>
#include <vis.h>
#include "csh.h"
#include "extern.h"
#ifdef SHORT_STRINGS
Char **
blk2short(char **src)
{
Char **dst, **sdst;
size_t n;
/*
* Count
*/
for (n = 0; src[n] != NULL; n++)
continue;
sdst = dst = xmalloc((size_t)((n + 1) * sizeof(*dst)));
for (; *src != NULL; src++)
*dst++ = SAVE(*src);
*dst = NULL;
return (sdst);
}
char **
short2blk(Char *const *src)
{
char **dst, **sdst;
size_t n;
/*
* Count
*/
for (n = 0; src[n] != NULL; n++)
continue;
sdst = dst = xmalloc((size_t)((n + 1) * sizeof(*dst)));
for (; *src != NULL; src++)
*dst++ = strsave(short2str(*src));
*dst = NULL;
return (sdst);
}
Char *
str2short(const char *src)
{
static Char *sdst;
Char *dst, *edst;
static size_t dstsize = 0;
if (src == NULL)
return (NULL);
if (sdst == (NULL)) {
dstsize = MALLOC_INCR;
sdst = xmalloc((size_t)dstsize * sizeof(*sdst));
}
dst = sdst;
edst = &dst[dstsize];
while (*src) {
*dst++ = (Char) ((unsigned char) *src++);
if (dst == edst) {
dstsize += MALLOC_INCR;
sdst = xrealloc((ptr_t)sdst,
(size_t)dstsize * sizeof(*sdst));
edst = &sdst[dstsize];
dst = &edst[-MALLOC_INCR];
}
}
*dst = 0;
return (sdst);
}
char *
short2str(const Char *src)
{
static char *sdst = NULL;
static size_t dstsize = 0;
char *dst, *edst;
if (src == NULL)
return (NULL);
if (sdst == NULL) {
dstsize = MALLOC_INCR;
sdst = xmalloc((size_t)dstsize * sizeof(*sdst));
}
dst = sdst;
edst = &dst[dstsize];
while (*src) {
*dst++ = (char) *src++;
if (dst == edst) {
dstsize += MALLOC_INCR;
sdst = xrealloc((ptr_t)sdst,
(size_t)dstsize * sizeof(*sdst));
edst = &sdst[dstsize];
dst = &edst[-MALLOC_INCR];
}
}
*dst = 0;
return (sdst);
}
Char *
s_strcpy(Char *dst, const Char *src)
{
Char *sdst;
sdst = dst;
while ((*dst++ = *src++) != '\0')
continue;
return (sdst);
}
Char *
s_strncpy(Char *dst, const Char *src, size_t n)
{
Char *sdst;
if (n == 0)
return(dst);
sdst = dst;
do
if ((*dst++ = *src++) == '\0') {
while (--n != 0)
*dst++ = '\0';
return(sdst);
}
while (--n != 0);
return (sdst);
}
Char *
s_strcat(Char *dst, const Char *src)
{
short *sdst;
sdst = dst;
while (*dst++)
continue;
--dst;
while ((*dst++ = *src++) != '\0')
continue;
return (sdst);
}
#ifdef NOTUSED
Char *
s_strncat(Char *dst, Char *src, size_t n)
{
Char *sdst;
if (n == 0)
return (dst);
sdst = dst;
while (*dst++)
continue;
--dst;
do
if ((*dst++ = *src++) == '\0')
return(sdst);
while (--n != 0)
continue;
*dst = '\0';
return (sdst);
}
#endif
Char *
s_strchr(const Char *str, int ch)
{
do
if (*str == ch)
return __UNCONST(str);
while (*str++);
return (NULL);
}
Char *
s_strrchr(const Char *str, int ch)
{
const Char *rstr;
rstr = NULL;
do
if (*str == ch)
rstr = str;
while (*str++);
return __UNCONST(rstr);
}
size_t
s_strlen(const Char *str)
{
size_t n;
for (n = 0; *str++; n++)
continue;
return (n);
}
int
s_strcmp(const Char *str1, const Char *str2)
{
for (; *str1 && *str1 == *str2; str1++, str2++)
continue;
/*
* The following case analysis is necessary so that characters which look
* negative collate low against normal characters but high against the
* end-of-string NUL.
*/
if (*str1 == '\0' && *str2 == '\0')
return (0);
else if (*str1 == '\0')
return (-1);
else if (*str2 == '\0')
return (1);
else
return (*str1 - *str2);
}
int
s_strncmp(const Char *str1, const Char *str2, size_t n)
{
if (n == 0)
return (0);
do {
if (*str1 != *str2) {
/*
* The following case analysis is necessary so that characters
* which look negative collate low against normal characters
* but high against the end-of-string NUL.
*/
if (*str1 == '\0')
return (-1);
else if (*str2 == '\0')
return (1);
else
return (*str1 - *str2);
}
if (*str1 == '\0')
return(0);
str1++, str2++;
} while (--n != 0);
return(0);
}
Char *
s_strsave(const Char *s)
{
const Char *p;
Char *n;
if (s == 0)
s = STRNULL;
for (p = s; *p++;)
continue;
p = n = xmalloc((size_t)(p - s) * sizeof(*n));
while ((*n++ = *s++) != '\0')
continue;
return __UNCONST(p);
}
Char *
s_strspl(const Char *cp, const Char *dp)
{
Char *ep, *d;
const Char *p, *q;
if (!cp)
cp = STRNULL;
if (!dp)
dp = STRNULL;
for (p = cp; *p++;)
continue;
for (q = dp; *q++;)
continue;
ep = xmalloc((size_t)((p - cp) + (q - dp) - 1) * sizeof(*ep));
for (d = ep, q = cp; (*d++ = *q++) != '\0';)
continue;
for (d--, q = dp; (*d++ = *q++) != '\0';)
continue;
return (ep);
}
Char *
s_strend(const Char *cp)
{
if (!cp)
return __UNCONST(cp);
while (*cp)
cp++;
return __UNCONST(cp);
}
Char *
s_strstr(const Char *s, const Char *t)
{
do {
const Char *ss = s;
const Char *tt = t;
do
if (*tt == '\0')
return __UNCONST(s);
while (*ss++ == *tt++);
} while (*s++ != '\0');
return (NULL);
}
#endif /* SHORT_STRINGS */
char *
short2qstr(const Char *src)
{
static char *sdst = NULL;
static size_t dstsize = 0;
char *dst, *edst;
if (src == NULL)
return (NULL);
if (sdst == NULL) {
dstsize = MALLOC_INCR;
sdst = xmalloc((size_t)dstsize * sizeof(*sdst));
}
dst = sdst;
edst = &dst[dstsize];
while (*src) {
if (*src & QUOTE) {
*dst++ = '\\';
if (dst == edst) {
dstsize += MALLOC_INCR;
sdst = xrealloc((ptr_t) sdst,
(size_t)dstsize * sizeof(*sdst));
edst = &sdst[dstsize];
dst = &edst[-MALLOC_INCR];
}
}
*dst++ = (char) *src++;
if (dst == edst) {
dstsize += MALLOC_INCR;
sdst = xrealloc((ptr_t) sdst,
(size_t)dstsize * sizeof(*sdst));
edst = &sdst[dstsize];
dst = &edst[-MALLOC_INCR];
}
}
*dst = 0;
return (sdst);
}
/*
* XXX: Should we worry about QUOTE'd chars?
*/
char *
vis_str(const Char *cp)
{
static char *sdst = NULL;
static size_t dstsize = 0;
const Char *dp;
size_t n;
if (cp == NULL)
return (NULL);
for (dp = cp; *dp++;)
continue;
n = ((size_t)(dp - cp) << 2) + 1; /* 4 times + NULL */
if (dstsize < n) {
sdst = (dstsize ?
xrealloc(sdst, (size_t)n * sizeof(*sdst)) :
xmalloc((size_t)n * sizeof(*sdst)));
dstsize = n;
}
/*
* XXX: When we are in AsciiOnly we want all characters >= 0200 to
* be encoded, but currently there is no way in vis to do that.
*/
(void)strvis(sdst, short2str(cp), VIS_NOSLASH);
return (sdst);
}

285
bin/csh/time.c Normal file
View file

@ -0,0 +1,285 @@
/* $NetBSD: time.c,v 1.20 2013/07/16 17:47:43 christos Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: time.c,v 1.20 2013/07/16 17:47:43 christos Exp $");
#endif
#endif /* not lint */
#ifndef NOT_CSH
#include <sys/types.h>
#include <stdarg.h>
#include "csh.h"
#include "extern.h"
#endif
#include <util.h>
/*
* C Shell - routines handling process timing and niceing
*/
static void pdeltat(FILE *, struct timeval *, struct timeval *);
static void pcsecs(FILE *, long);
#ifndef NOT_CSH
void
settimes(void)
{
struct rusage ruch;
(void)clock_gettime(CLOCK_MONOTONIC, &time0);
(void)getrusage(RUSAGE_SELF, &ru0);
(void)getrusage(RUSAGE_CHILDREN, &ruch);
ruadd(&ru0, &ruch);
}
/*
* dotime is only called if it is truly a builtin function and not a
* prefix to another command
*/
void
/*ARGSUSED*/
dotime(Char **v, struct command *t)
{
struct rusage ru1, ruch;
struct timespec timedol;
(void)getrusage(RUSAGE_SELF, &ru1);
(void)getrusage(RUSAGE_CHILDREN, &ruch);
ruadd(&ru1, &ruch);
(void)clock_gettime(CLOCK_MONOTONIC, &timedol);
prusage(cshout, &ru0, &ru1, &timedol, &time0);
}
/*
* donice is only called when it on the line by itself or with a +- value
*/
void
/*ARGSUSED*/
donice(Char **v, struct command *t)
{
Char *cp;
int nval;
nval = 0;
v++;
cp = *v++;
if (cp == 0)
nval = 4;
else if (*v == 0 && any("+-", cp[0]))
nval = getn(cp);
(void)setpriority(PRIO_PROCESS, 0, nval);
}
void
ruadd(struct rusage *ru, struct rusage *ru2)
{
timeradd(&ru->ru_utime, &ru2->ru_utime, &ru->ru_utime);
timeradd(&ru->ru_stime, &ru2->ru_stime, &ru->ru_stime);
if (ru2->ru_maxrss > ru->ru_maxrss)
ru->ru_maxrss = ru2->ru_maxrss;
ru->ru_ixrss += ru2->ru_ixrss;
ru->ru_idrss += ru2->ru_idrss;
ru->ru_isrss += ru2->ru_isrss;
ru->ru_minflt += ru2->ru_minflt;
ru->ru_majflt += ru2->ru_majflt;
ru->ru_nswap += ru2->ru_nswap;
ru->ru_inblock += ru2->ru_inblock;
ru->ru_oublock += ru2->ru_oublock;
ru->ru_msgsnd += ru2->ru_msgsnd;
ru->ru_msgrcv += ru2->ru_msgrcv;
ru->ru_nsignals += ru2->ru_nsignals;
ru->ru_nvcsw += ru2->ru_nvcsw;
ru->ru_nivcsw += ru2->ru_nivcsw;
}
#endif /* NOT_CSH */
void
prusage(FILE *fp, struct rusage *r0, struct rusage *r1, struct timespec *e,
struct timespec *b)
{
#ifndef NOT_CSH
struct varent *vp;
#endif
const char *cp;
long i;
time_t t;
time_t ms;
cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww";
ms = (e->tv_sec - b->tv_sec) * 100 + (e->tv_nsec - b->tv_nsec) / 10000000;
t = (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 +
(r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 +
(r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 +
(r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000;
#ifndef NOT_CSH
vp = adrof(STRtime);
if (vp && vp->vec[0] && vp->vec[1])
cp = short2str(vp->vec[1]);
#endif
for (; *cp; cp++)
if (*cp != '%')
(void) fputc(*cp, fp);
else if (cp[1])
switch (*++cp) {
case 'D': /* (average) unshared data size */
(void)fprintf(fp, "%ld", t == 0 ? 0L :
(long)((r1->ru_idrss + r1->ru_isrss -
(r0->ru_idrss + r0->ru_isrss)) / t));
break;
case 'E': /* elapsed (wall-clock) time */
pcsecs(fp, (long) ms);
break;
case 'F': /* page faults */
(void)fprintf(fp, "%ld", r1->ru_majflt - r0->ru_majflt);
break;
case 'I': /* FS blocks in */
(void)fprintf(fp, "%ld", r1->ru_inblock - r0->ru_inblock);
break;
case 'K': /* (average) total data memory used */
(void)fprintf(fp, "%ld", t == 0 ? 0L :
(long)(((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) -
(r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t));
break;
case 'M': /* max. Resident Set Size */
(void)fprintf(fp, "%ld", r1->ru_maxrss / 2L);
break;
case 'O': /* FS blocks out */
(void)fprintf(fp, "%ld", r1->ru_oublock - r0->ru_oublock);
break;
case 'P': /* percent time spent running */
/* check if it did not run at all */
if (ms == 0) {
(void)fputs("0.0%", fp);
} else {
char pb[32];
(void)fputs(strpct(pb, sizeof(pb),
(uintmax_t)t, (uintmax_t)ms, 1), fp);
(void)fputc('%', fp);
}
break;
case 'R': /* page reclaims */
(void)fprintf(fp, "%ld", r1->ru_minflt - r0->ru_minflt);
break;
case 'S': /* system CPU time used */
pdeltat(fp, &r1->ru_stime, &r0->ru_stime);
break;
case 'U': /* user CPU time used */
pdeltat(fp, &r1->ru_utime, &r0->ru_utime);
break;
case 'W': /* number of swaps */
i = r1->ru_nswap - r0->ru_nswap;
(void)fprintf(fp, "%ld", i);
break;
case 'X': /* (average) shared text size */
(void)fprintf(fp, "%ld", t == 0 ? 0L :
(long)((r1->ru_ixrss - r0->ru_ixrss) / t));
break;
case 'c': /* num. involuntary context switches */
(void)fprintf(fp, "%ld", r1->ru_nivcsw - r0->ru_nivcsw);
break;
case 'k': /* number of signals received */
(void)fprintf(fp, "%ld", r1->ru_nsignals-r0->ru_nsignals);
break;
case 'r': /* socket messages received */
(void)fprintf(fp, "%ld", r1->ru_msgrcv - r0->ru_msgrcv);
break;
case 's': /* socket messages sent */
(void)fprintf(fp, "%ld", r1->ru_msgsnd - r0->ru_msgsnd);
break;
case 'w': /* num. voluntary context switches (waits) */
(void)fprintf(fp, "%ld", r1->ru_nvcsw - r0->ru_nvcsw);
break;
}
(void)fputc('\n', fp);
}
static void
pdeltat(FILE *fp, struct timeval *t1, struct timeval *t0)
{
struct timeval td;
timersub(t1, t0, &td);
(void)fprintf(fp, "%ld.%01ld", (long)td.tv_sec,
(long)(td.tv_usec / 100000));
}
#define P2DIG(fp, i) (void)fprintf(fp, "%ld%ld", (i) / 10, (i) % 10)
#ifndef NOT_CSH
void
psecs(long l)
{
long i;
i = l / 3600;
if (i) {
(void)fprintf(cshout, "%ld:", i);
i = l % 3600;
P2DIG(cshout, i / 60);
goto minsec;
}
i = l;
(void)fprintf(cshout, "%ld", i / 60);
minsec:
i %= 60;
(void)fputc(':', cshout);
P2DIG(cshout, i);
}
#endif
static void
pcsecs(FILE *fp, long l) /* PWP: print mm:ss.dd, l is in sec*100 */
{
long i;
i = l / 360000;
if (i) {
(void)fprintf(fp, "%ld:", i);
i = (l % 360000) / 100;
P2DIG(fp, i / 60);
goto minsec;
}
i = l / 100;
(void)fprintf(fp, "%ld", i / 60);
minsec:
i %= 60;
(void)fputc(':', fp);
P2DIG(fp, i);
(void)fputc('.', fp);
P2DIG(fp, (l % 100));
}

27
distrib/sets/lists/minix/mi
View file

@ -16,6 +16,7 @@
./bin/command minix-sys obsolete
./bin/cp minix-sys
./bin/cpio minix-sys
./bin/csh minix-sys
./bin/date minix-sys
./bin/dd minix-sys
./bin/df minix-sys
@ -2310,6 +2311,7 @@
./usr/man/man1/[.1 minix-sys
./usr/man/man1/..1 minix-sys obsolete
./usr/man/man1/addr2line.1 minix-sys binutils
./usr/man/man1/alias.1 minix-sys
./usr/man/man1/apropos.1 minix-sys
./usr/man/man1/ar.1 minix-sys binutils
./usr/man/man1/as.1 minix-sys binutils
@ -2328,6 +2330,7 @@
./usr/man/man1/banner.1 minix-sys
./usr/man/man1/basename.1 minix-sys
./usr/man/man1/bdes.1 minix-sys
./usr/man/man1/bg.1 minix-sys
./usr/man/man1/break.1 minix-sys obsolete
./usr/man/man1/bsdtar.1 minix-sys
./usr/man/man1/bsfilt.1 minix-sys
@ -2369,6 +2372,7 @@
./usr/man/man1/cpp.1 minix-sys gcccmds
./usr/man/man1/crc.1 minix-sys
./usr/man/man1/crontab.1 minix-sys
./usr/man/man1/csh.1 minix-sys
./usr/man/man1/csplit.1 minix-sys
./usr/man/man1/ctags.1 minix-sys
./usr/man/man1/cut.1 minix-sys
@ -2380,6 +2384,7 @@
./usr/man/man1/dhrystone.1 minix-sys
./usr/man/man1/diff.1 minix-sys
./usr/man/man1/dirname.1 minix-sys
./usr/man/man1/dirs.1 minix-sys
./usr/man/man1/domainname.1 minix-sys
./usr/man/man1/dosdir.1 minix-sys
./usr/man/man1/dosread.1 minix-sys
@ -2400,6 +2405,7 @@
./usr/man/man1/expr.1 minix-sys
./usr/man/man1/false.1 minix-sys
./usr/man/man1/fetch.1 minix-sys
./usr/man/man1/fg.1 minix-sys
./usr/man/man1/fgrep.1 minix-sys
./usr/man/man1/file.1 minix-sys
./usr/man/man1/find.1 minix-sys
@ -2409,6 +2415,7 @@
./usr/man/man1/flock.1 minix-sys
./usr/man/man1/fold.1 minix-sys
./usr/man/man1/for.1 minix-sys obsolete
./usr/man/man1/foreach.1 minix-sys
./usr/man/man1/format.1 minix-sys
./usr/man/man1/fpr.1 minix-sys
./usr/man/man1/from.1 minix-sys
@ -2432,6 +2439,7 @@
./usr/man/man1/hash.1 minix-sys obsolete
./usr/man/man1/head.1 minix-sys
./usr/man/man1/hexdump.1 minix-sys
./usr/man/man1/history.1 minix-sys
./usr/man/man1/host.1 minix-sys
./usr/man/man1/hostaddr.1 minix-sys
./usr/man/man1/hostname.1 minix-sys
@ -2447,7 +2455,7 @@
./usr/man/man1/isodir.1 minix-sys
./usr/man/man1/isoinfo.1 minix-sys
./usr/man/man1/isoread.1 minix-sys
./usr/man/man1/jobs.1 minix-sys obsolete
./usr/man/man1/jobs.1 minix-sys
./usr/man/man1/join.1 minix-sys
./usr/man/man1/jot.1 minix-sys
./usr/man/man1/kill.1 minix-sys
@ -2476,6 +2484,7 @@
./usr/man/man1/lessecho.1 minix-sys
./usr/man/man1/lesskey.1 minix-sys
./usr/man/man1/lex.1 minix-sys
./usr/man/man1/limit.1 minix-sys
./usr/man/man1/linkfarm.1 minix-sys obsolete
./usr/man/man1/ln.1 minix-sys
./usr/man/man1/loadfont.1 minix-sys
@ -2541,12 +2550,14 @@
./usr/man/man1/ping.1 minix-sys obsolete
./usr/man/man1/pkg_view.1 minix-sys obsolete
./usr/man/man1/playwave.1 minix-sys
./usr/man/man1/popd.1 minix-sys
./usr/man/man1/pr.1 minix-sys
./usr/man/man1/prep.1 minix-sys
./usr/man/man1/printenv.1 minix-sys
./usr/man/man1/printf.1 minix-sys
./usr/man/man1/profile.1 minix-sys
./usr/man/man1/ps.1 minix-sys
./usr/man/man1/pushd.1 minix-sys
./usr/man/man1/pwd.1 minix-sys
./usr/man/man1/pwhash.1 minix-sys
./usr/man/man1/ranlib.1 minix-sys binutils
@ -2557,7 +2568,9 @@
./usr/man/man1/readlink.1 minix-sys
./usr/man/man1/readonly.1 minix-sys obsolete
./usr/man/man1/recwave.1 minix-sys
./usr/man/man1/rehash.1 minix-sys
./usr/man/man1/remsync.1 minix-sys
./usr/man/man1/repeat.1 minix-sys
./usr/man/man1/return.1 minix-sys obsolete
./usr/man/man1/rev.1 minix-sys
./usr/man/man1/rget.1 minix-sys
@ -2582,15 +2595,18 @@
./usr/man/man1/sleep.1 minix-sys
./usr/man/man1/soelim.1 minix-sys
./usr/man/man1/sort.1 minix-sys
./usr/man/man1/source.1 minix-sys
./usr/man/man1/spell.1 minix-sys
./usr/man/man1/split.1 minix-sys
./usr/man/man1/sqlite3.1 minix-sys
./usr/man/man1/stat.1 minix-sys
./usr/man/man1/stop.1 minix-sys
./usr/man/man1/strings.1 minix-sys binutils
./usr/man/man1/strip.1 minix-sys binutils
./usr/man/man1/stty.1 minix-sys
./usr/man/man1/su.1 minix-sys
./usr/man/man1/sum.1 minix-sys
./usr/man/man1/suspend.1 minix-sys
./usr/man/man1/svc.1 minix-sys obsolete
./usr/man/man1/svrctl.1 minix-sys
./usr/man/man1/synctree.1 minix-sys
@ -5420,6 +5436,15 @@
./usr/share/doc/usd/03.shell/t3 minix-sys
./usr/share/doc/usd/03.shell/t4 minix-sys
./usr/share/doc/usd/03.shell/t.mac minix-sys
./usr/share/doc/usd/04.csh minix-sys
./usr/share/doc/usd/04.csh/Makefile minix-sys
./usr/share/doc/usd/04.csh/csh.1 minix-sys
./usr/share/doc/usd/04.csh/csh.2 minix-sys
./usr/share/doc/usd/04.csh/csh.3 minix-sys
./usr/share/doc/usd/04.csh/csh.4 minix-sys
./usr/share/doc/usd/04.csh/csh.ap minix-sys
./usr/share/doc/usd/04.csh/csh.g minix-sys
./usr/share/doc/usd/04.csh/tabs minix-sys
./usr/share/doc/usd/30.rogue minix-sys
./usr/share/doc/usd/30.rogue/Makefile minix-sys
./usr/share/doc/usd/30.rogue/rogue.me minix-sys

1
etc/mtree/NetBSD.dist.base
View file

@ -131,6 +131,7 @@
./usr/share/doc/psd/19.curses
./usr/share/doc/usd
./usr/share/doc/usd/03.shell
./usr/share/doc/usd/04.csh
./usr/share/doc/usd/30.rogue
./usr/share/examples
./usr/share/examples/tmux