added chmod util from NetBSD userland
Change-Id: Ice81a29becedcebfc1ff42ac9826c291b6451189
This commit is contained in:
Morgawr
Lionel Sambuc
parent
ec92655ec2
commit
b6bd719869
|
|
@ -1,7 +1,7 @@
|
|||
# $NetBSD: Makefile,v 1.22 2007/12/31 15:31:24 ad Exp $
|
||||
# @(#)Makefile 8.1 (Berkeley) 5/31/93
|
||||
|
||||
SUBDIR= cat date df echo ed expr \
|
||||
SUBDIR= cat chmod date df echo ed expr \
|
||||
kill ksh ln ls mkdir pax pwd rm rmdir \
|
||||
sleep stty sync test
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,6 @@
|
|||
# $NetBSD: Makefile,v 1.8 1997/07/20 22:36:34 christos Exp $
|
||||
# @(#)Makefile 8.1 (Berkeley) 5/31/93
|
||||
|
||||
PROG= chmod
|
||||
|
||||
.include <bsd.prog.mk>
|
||||
|
|
@ -0,0 +1,307 @@
|
|||
.\" $NetBSD: chmod.1,v 1.24 2012/10/22 17:47:06 christos Exp $
|
||||
.\"
|
||||
.\" Copyright (c) 1989, 1990, 1993, 1994
|
||||
.\" The Regents of the University of California. All rights reserved.
|
||||
.\"
|
||||
.\" This code is derived from software contributed to Berkeley by
|
||||
.\" the Institute of Electrical and Electronics Engineers, Inc.
|
||||
.\"
|
||||
.\" 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.
|
||||
.\"
|
||||
.\" @(#)chmod.1 8.4 (Berkeley) 3/31/94
|
||||
.\"
|
||||
.Dd October 22, 2012
|
||||
.Dt CHMOD 1
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm chmod
|
||||
.Nd change file modes
|
||||
.Sh SYNOPSIS
|
||||
.Nm
|
||||
.Oo
|
||||
.Fl R
|
||||
.Op Fl H | Fl L | Fl P
|
||||
.Oc
|
||||
.Op Fl fh
|
||||
.Ar mode
|
||||
.Ar
|
||||
.Nm
|
||||
.Oo
|
||||
.Fl R
|
||||
.Op Fl H | Fl L | Fl P
|
||||
.Oc
|
||||
.Op Fl fh
|
||||
.Fl Fl reference=rfile
|
||||
.Ar
|
||||
.Sh DESCRIPTION
|
||||
The
|
||||
.Nm
|
||||
utility modifies the file mode bits of the listed files
|
||||
as specified by the
|
||||
.Ar mode
|
||||
operand, or
|
||||
copied from a reference
|
||||
.Ar rfile ,
|
||||
as specified with the
|
||||
.Fl Fl reference
|
||||
argument.
|
||||
.Pp
|
||||
The options are as follows:
|
||||
.Bl -tag -width Ds
|
||||
.It Fl H
|
||||
If the
|
||||
.Fl R
|
||||
option is specified, symbolic links on the command line are followed.
|
||||
(Symbolic links encountered in the tree traversal are not followed.)
|
||||
.It Fl L
|
||||
If the
|
||||
.Fl R
|
||||
option is specified, all symbolic links are followed.
|
||||
.It Fl P
|
||||
If the
|
||||
.Fl R
|
||||
option is specified, no symbolic links are followed.
|
||||
.It Fl R
|
||||
Change the modes of the file hierarchies rooted in the files
|
||||
instead of just the files themselves.
|
||||
.It Fl f
|
||||
Do not display a diagnostic message or modify the exit status if
|
||||
.Nm
|
||||
fails to change the mode of a file.
|
||||
.It Fl h
|
||||
If
|
||||
.Ar file
|
||||
is symbolic link, the mode of the link is changed.
|
||||
.El
|
||||
.Pp
|
||||
The
|
||||
.Fl H ,
|
||||
.Fl L
|
||||
and
|
||||
.Fl P
|
||||
options are ignored unless the
|
||||
.Fl R
|
||||
option is specified.
|
||||
In addition, these options override each other and the
|
||||
command's actions are determined by the last one specified.
|
||||
.Pp
|
||||
Only the owner of a file or the super-user is permitted to change
|
||||
the mode of a file.
|
||||
.Sh EXIT STATUS
|
||||
The
|
||||
.Nm
|
||||
utility exits 0 on success, and \*[Gt]0 if an error occurs.
|
||||
.Sh MODES
|
||||
Modes may be absolute or symbolic.
|
||||
An absolute mode is an octal number constructed by
|
||||
.Em or Ap ing
|
||||
the following values:
|
||||
.Pp
|
||||
.Bl -tag -width 6n -compact -offset indent
|
||||
.It Li 4000
|
||||
set-user-ID-on-execution
|
||||
.It Li 2000
|
||||
set-group-ID-on-execution
|
||||
.It Li 1000
|
||||
sticky bit, see
|
||||
.Xr chmod 2
|
||||
.It Li 0400
|
||||
read by owner
|
||||
.It Li 0200
|
||||
write by owner
|
||||
.It Li 0100
|
||||
execute (or search for directories) by owner
|
||||
.It Li 0070
|
||||
read, write, execute/search by group
|
||||
.It Li 0007
|
||||
read, write, execute/search by others
|
||||
.El
|
||||
.Pp
|
||||
The read, write, and execute/search values for group and others
|
||||
are encoded as described for owner.
|
||||
.Pp
|
||||
The symbolic mode is described by the following grammar:
|
||||
.Bd -literal -offset indent
|
||||
mode ::= clause [, clause ...]
|
||||
clause ::= [who ...] [action ...] last_action
|
||||
action ::= op [perm ...]
|
||||
last_action ::= op [perm ...]
|
||||
who ::= a | u | g | o
|
||||
op ::= + | \- | =
|
||||
perm ::= r | s | t | w | x | X | u | g | o
|
||||
.Ed
|
||||
.Pp
|
||||
The
|
||||
.Ar who
|
||||
symbols ``u'', ``g'', and ``o'' specify the user, group, and other parts
|
||||
of the mode bits, respectively.
|
||||
The
|
||||
.Ar who
|
||||
symbol ``a'' is equivalent to ``ugo''.
|
||||
.Pp
|
||||
The
|
||||
.Ar perm
|
||||
symbols represent the portions of the mode bits as follows:
|
||||
.Pp
|
||||
.Bl -tag -width Ds -compact -offset indent
|
||||
.It r
|
||||
The read bits.
|
||||
.It s
|
||||
The set-user-ID-on-execution and set-group-ID-on-execution bits.
|
||||
.It t
|
||||
The sticky bit.
|
||||
.It w
|
||||
The write bits.
|
||||
.It x
|
||||
The execute/search bits.
|
||||
.It X
|
||||
The execute/search bits if the file is a directory or any of the
|
||||
execute/search bits are set in the original (unmodified) mode.
|
||||
Operations with the
|
||||
.Ar perm
|
||||
symbol ``X'' are only meaningful in conjunction with the
|
||||
.Ar op
|
||||
symbol ``+'', and are ignored in all other cases.
|
||||
.It u
|
||||
The user permission bits in the mode of the original file.
|
||||
.It g
|
||||
The group permission bits in the mode of the original file.
|
||||
.It o
|
||||
The other permission bits in the mode of the original file.
|
||||
.El
|
||||
.Pp
|
||||
The
|
||||
.Ar op
|
||||
symbols represent the operation performed, as follows:
|
||||
.Bl -tag -width 4n
|
||||
.It +
|
||||
If no value is supplied for
|
||||
.Ar perm ,
|
||||
the ``+'' operation has no effect.
|
||||
If no value is supplied for
|
||||
.Ar who ,
|
||||
each permission bit specified in
|
||||
.Ar perm ,
|
||||
for which the corresponding bit in the file mode creation mask
|
||||
is clear, is set.
|
||||
Otherwise, the mode bits represented by the specified
|
||||
.Ar who
|
||||
and
|
||||
.Ar perm
|
||||
values are set.
|
||||
.It \&\-
|
||||
If no value is supplied for
|
||||
.Ar perm ,
|
||||
the ``\-'' operation has no effect.
|
||||
If no value is supplied for
|
||||
.Ar who ,
|
||||
each permission bit specified in
|
||||
.Ar perm ,
|
||||
for which the corresponding bit in the file mode creation mask
|
||||
is clear, is cleared.
|
||||
Otherwise, the mode bits represented by the specified
|
||||
.Ar who
|
||||
and
|
||||
.Ar perm
|
||||
values are cleared.
|
||||
.It =
|
||||
The mode bits specified by the
|
||||
.Ar who
|
||||
value are cleared, or, if no who value is specified, the owner, group
|
||||
and other mode bits are cleared.
|
||||
Then, if no value is supplied for
|
||||
.Ar who ,
|
||||
each permission bit specified in
|
||||
.Ar perm ,
|
||||
for which the corresponding bit in the file mode creation mask
|
||||
is clear, is set.
|
||||
Otherwise, the mode bits represented by the specified
|
||||
.Ar who
|
||||
and
|
||||
.Ar perm
|
||||
values are set.
|
||||
.El
|
||||
.Pp
|
||||
Each
|
||||
.Ar clause
|
||||
specifies one or more operations to be performed on the mode
|
||||
bits, and each operation is applied to the mode bits in the
|
||||
order specified.
|
||||
.Pp
|
||||
Operations upon the other permissions only (specified by the symbol
|
||||
``o'' by itself), in combination with the
|
||||
.Ar perm
|
||||
symbols ``s'' or ``t'', are ignored.
|
||||
.Sh EXAMPLES
|
||||
.Bl -tag -width "u=rwx,go=u-w" -compact
|
||||
.It Li 644
|
||||
make a file readable by anyone and writable by the owner only.
|
||||
.Pp
|
||||
.It Li go-w
|
||||
deny write permission to group and others.
|
||||
.Pp
|
||||
.It Li =rw,+X
|
||||
set the read and write permissions to the usual defaults, but
|
||||
retain any execute permissions that are currently set.
|
||||
.Pp
|
||||
.It Li +X
|
||||
make a directory or file searchable/executable by everyone if it is
|
||||
already searchable/executable by anyone.
|
||||
.Pp
|
||||
.It Li 755
|
||||
.It Li u=rwx,go=rx
|
||||
.It Li u=rwx,go=u-w
|
||||
make a file readable/executable by everyone and writable by the owner only.
|
||||
.Pp
|
||||
.It Li go=
|
||||
clear all mode bits for group and others.
|
||||
.Pp
|
||||
.It Li g=u-w
|
||||
set the group bits equal to the user bits, but clear the group write bit.
|
||||
.El
|
||||
.Sh SEE ALSO
|
||||
.Xr chflags 1 ,
|
||||
.Xr install 1 ,
|
||||
.Xr chmod 2 ,
|
||||
.Xr stat 2 ,
|
||||
.Xr umask 2 ,
|
||||
.Xr fts 3 ,
|
||||
.Xr setmode 3 ,
|
||||
.Xr symlink 7 ,
|
||||
.Xr chown 8
|
||||
.Sh STANDARDS
|
||||
The
|
||||
.Nm
|
||||
utility is expected to be
|
||||
.St -p1003.2-92
|
||||
compatible with the exception of the
|
||||
.Ar perm
|
||||
symbol
|
||||
.Dq t
|
||||
which is not included in that standard.
|
||||
.Sh BUGS
|
||||
There's no
|
||||
.Ar perm
|
||||
option for the naughty bits.
|
||||
|
|
@ -0,0 +1,239 @@
|
|||
/* $NetBSD: chmod.c,v 1.38 2012/10/22 18:00:46 christos Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1989, 1993, 1994
|
||||
* 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
|
||||
__COPYRIGHT(
|
||||
"@(#) Copyright (c) 1989, 1993, 1994\
|
||||
The Regents of the University of California. All rights reserved.");
|
||||
#endif /* not lint */
|
||||
|
||||
#ifndef lint
|
||||
#if 0
|
||||
static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94";
|
||||
#else
|
||||
__RCSID("$NetBSD: chmod.c,v 1.38 2012/10/22 18:00:46 christos Exp $");
|
||||
#endif
|
||||
#endif /* not lint */
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/types.h>
|
||||
|
||||
#include <err.h>
|
||||
#include <errno.h>
|
||||
#include <fts.h>
|
||||
#include <limits.h>
|
||||
#include <locale.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <getopt.h>
|
||||
|
||||
__dead static void usage(void);
|
||||
|
||||
struct option chmod_longopts[] = {
|
||||
{ "reference", required_argument, 0,
|
||||
1 },
|
||||
{ NULL, 0, 0,
|
||||
0 },
|
||||
};
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
FTS *ftsp;
|
||||
FTSENT *p;
|
||||
void *set;
|
||||
mode_t mval;
|
||||
int Hflag, Lflag, Rflag, ch, fflag, fts_options, hflag, rval;
|
||||
char *mode, *reference;
|
||||
int (*change_mode)(const char *, mode_t);
|
||||
|
||||
setprogname(argv[0]);
|
||||
(void)setlocale(LC_ALL, "");
|
||||
|
||||
Hflag = Lflag = Rflag = fflag = hflag = 0;
|
||||
reference = NULL;
|
||||
while ((ch = getopt_long(argc, argv, "HLPRXfghorstuwx",
|
||||
chmod_longopts, NULL)) != -1)
|
||||
switch (ch) {
|
||||
case 1:
|
||||
reference = optarg;
|
||||
break;
|
||||
case 'H':
|
||||
Hflag = 1;
|
||||
Lflag = 0;
|
||||
break;
|
||||
case 'L':
|
||||
Lflag = 1;
|
||||
Hflag = 0;
|
||||
break;
|
||||
case 'P':
|
||||
Hflag = Lflag = 0;
|
||||
break;
|
||||
case 'R':
|
||||
Rflag = 1;
|
||||
break;
|
||||
case 'f':
|
||||
fflag = 1;
|
||||
break;
|
||||
case 'h':
|
||||
/*
|
||||
* In System V the -h option causes chmod to
|
||||
* change the mode of the symbolic link.
|
||||
* 4.4BSD's symbolic links didn't have modes,
|
||||
* so it was an undocumented noop. In NetBSD
|
||||
* 1.3, lchmod(2) is introduced and this
|
||||
* option does real work.
|
||||
*/
|
||||
hflag = 1;
|
||||
break;
|
||||
/*
|
||||
* XXX
|
||||
* "-[rwx]" are valid mode commands. If they are the entire
|
||||
* argument, getopt has moved past them, so decrement optind.
|
||||
* Regardless, we're done argument processing.
|
||||
*/
|
||||
case 'g': case 'o': case 'r': case 's':
|
||||
case 't': case 'u': case 'w': case 'X': case 'x':
|
||||
if (argv[optind - 1][0] == '-' &&
|
||||
argv[optind - 1][1] == ch &&
|
||||
argv[optind - 1][2] == '\0')
|
||||
--optind;
|
||||
goto done;
|
||||
case '?':
|
||||
default:
|
||||
usage();
|
||||
}
|
||||
done: argv += optind;
|
||||
argc -= optind;
|
||||
|
||||
if (argc == 0 || (argc == 1 && reference == NULL))
|
||||
usage();
|
||||
|
||||
fts_options = FTS_PHYSICAL;
|
||||
if (Rflag) {
|
||||
if (hflag) {
|
||||
errx(EXIT_FAILURE,
|
||||
"the -R and -h options may not be specified together.");
|
||||
/* NOTREACHED */
|
||||
}
|
||||
if (Hflag)
|
||||
fts_options |= FTS_COMFOLLOW;
|
||||
if (Lflag) {
|
||||
fts_options &= ~FTS_PHYSICAL;
|
||||
fts_options |= FTS_LOGICAL;
|
||||
}
|
||||
} else if (!hflag)
|
||||
fts_options |= FTS_COMFOLLOW;
|
||||
if (hflag)
|
||||
change_mode = lchmod;
|
||||
else
|
||||
change_mode = chmod;
|
||||
|
||||
if (reference == NULL) {
|
||||
mode = *argv++;
|
||||
if ((set = setmode(mode)) == NULL) {
|
||||
err(EXIT_FAILURE, "Cannot set file mode `%s'", mode);
|
||||
/* NOTREACHED */
|
||||
}
|
||||
mval = 0;
|
||||
} else {
|
||||
struct stat st;
|
||||
|
||||
if (stat(reference, &st) == -1)
|
||||
err(EXIT_FAILURE, "Cannot stat `%s'", reference);
|
||||
mval = st.st_mode;
|
||||
set = NULL;
|
||||
}
|
||||
|
||||
if ((ftsp = fts_open(argv, fts_options, 0)) == NULL) {
|
||||
err(EXIT_FAILURE, "fts_open");
|
||||
/* NOTREACHED */
|
||||
}
|
||||
for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
|
||||
switch (p->fts_info) {
|
||||
case FTS_D:
|
||||
if (!Rflag)
|
||||
(void)fts_set(ftsp, p, FTS_SKIP);
|
||||
break;
|
||||
case FTS_DNR: /* Warn, chmod, continue. */
|
||||
warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
|
||||
rval = 1;
|
||||
break;
|
||||
case FTS_DP: /* Already changed at FTS_D. */
|
||||
continue;
|
||||
case FTS_ERR: /* Warn, continue. */
|
||||
case FTS_NS:
|
||||
warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
|
||||
rval = 1;
|
||||
continue;
|
||||
case FTS_SL: /* Ignore. */
|
||||
case FTS_SLNONE:
|
||||
/*
|
||||
* The only symlinks that end up here are ones that
|
||||
* don't point to anything and ones that we found
|
||||
* doing a physical walk.
|
||||
*/
|
||||
if (!hflag)
|
||||
continue;
|
||||
/* else */
|
||||
/* FALLTHROUGH */
|
||||
default:
|
||||
break;
|
||||
}
|
||||
if ((*change_mode)(p->fts_accpath,
|
||||
set ? getmode(set, p->fts_statp->st_mode) : mval)
|
||||
&& !fflag) {
|
||||
warn("%s", p->fts_path);
|
||||
rval = 1;
|
||||
}
|
||||
}
|
||||
if (errno) {
|
||||
err(EXIT_FAILURE, "fts_read");
|
||||
/* NOTREACHED */
|
||||
}
|
||||
exit(rval);
|
||||
/* NOTREACHED */
|
||||
}
|
||||
|
||||
static void
|
||||
usage(void)
|
||||
{
|
||||
(void)fprintf(stderr,
|
||||
"Usage: %s [-R [-H | -L | -P]] [-fh] mode file ...\n"
|
||||
"\t%s [-R [-H | -L | -P]] [-fh] --reference=rfile file ...\n",
|
||||
getprogname(), getprogname());
|
||||
exit(1);
|
||||
/* NOTREACHED */
|
||||
}
|
||||
|
|
@ -4,7 +4,7 @@
|
|||
|
||||
SUBDIR= add_route arp ash at backup btrace \
|
||||
cawf cd cdprobe cpp \
|
||||
chmod ci cleantmp cmp co \
|
||||
ci cleantmp cmp co \
|
||||
compress cp crc cron crontab \
|
||||
dd decomp16 DESCRIBE devmand devsize dhcpd \
|
||||
dhrystone diff diskctl \
|
||||
|
|
|
|||
|
|
@ -1,8 +0,0 @@
|
|||
# LSC For now...
|
||||
NOGCCERROR:= yes
|
||||
PROG= chmod
|
||||
MAN=
|
||||
BINDIR=/bin
|
||||
SYMLINKS+= $(BINDIR)/$(PROG) /usr/bin/chmod
|
||||
|
||||
.include <bsd.prog.mk>
|
||||
|
|
@ -1,249 +0,0 @@
|
|||
/* chmod - Change file modes Author: V. Archer */
|
||||
|
||||
/* Copyright 1991 by Vincent Archer
|
||||
* You may freely redistribute this software, in source or binary
|
||||
* form, provided that you do not alter this copyright mention in any
|
||||
* way.
|
||||
*/
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <dirent.h>
|
||||
#include <errno.h>
|
||||
#include <limits.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <minix/minlib.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#ifndef S_ISLNK
|
||||
#define S_ISLNK(mode) 0
|
||||
#define lstat stat
|
||||
#endif
|
||||
|
||||
#define USR_MODES (S_ISUID|S_IRWXU)
|
||||
#define GRP_MODES (S_ISGID|S_IRWXG)
|
||||
#define EXE_MODES (S_IXUSR|S_IXGRP|S_IXOTH)
|
||||
#ifdef S_ISVTX
|
||||
#define ALL_MODES (USR_MODES|GRP_MODES|S_IRWXO|S_ISVTX)
|
||||
#else
|
||||
#define ALL_MODES (USR_MODES|GRP_MODES|S_IRWXO)
|
||||
#endif
|
||||
|
||||
|
||||
/* Common variables */
|
||||
char *symbolic;
|
||||
mode_t new_mode, u_mask;
|
||||
int rflag, errors;
|
||||
struct stat st;
|
||||
char path[PATH_MAX + 1];
|
||||
|
||||
int do_change(char *name);
|
||||
void usage(void);
|
||||
|
||||
/* Parse a P1003.2 4.7.7-conformant symbolic mode. */
|
||||
mode_t parsemode(const char *symbolic, mode_t oldmode)
|
||||
{
|
||||
mode_t who, mask, newmode, tmpmask;
|
||||
char action;
|
||||
|
||||
newmode = oldmode & ALL_MODES;
|
||||
while (*symbolic) {
|
||||
who = 0;
|
||||
for (; *symbolic; symbolic++) {
|
||||
if (*symbolic == 'a') {
|
||||
who |= ALL_MODES;
|
||||
continue;
|
||||
}
|
||||
if (*symbolic == 'u') {
|
||||
who |= USR_MODES;
|
||||
continue;
|
||||
}
|
||||
if (*symbolic == 'g') {
|
||||
who |= GRP_MODES;
|
||||
continue;
|
||||
}
|
||||
if (*symbolic == 'o') {
|
||||
who |= S_IRWXO;
|
||||
continue;
|
||||
}
|
||||
break;
|
||||
}
|
||||
if (!*symbolic || *symbolic == ',') usage();
|
||||
while (*symbolic) {
|
||||
if (*symbolic == ',') break;
|
||||
switch (*symbolic) {
|
||||
default:
|
||||
usage();
|
||||
case '+':
|
||||
case '-':
|
||||
case '=': action = *symbolic++;
|
||||
}
|
||||
mask = 0;
|
||||
for (; *symbolic; symbolic++) {
|
||||
if (*symbolic == 'u') {
|
||||
tmpmask = newmode & S_IRWXU;
|
||||
mask |= tmpmask | (tmpmask << 3) | (tmpmask << 6);
|
||||
symbolic++;
|
||||
break;
|
||||
}
|
||||
if (*symbolic == 'g') {
|
||||
tmpmask = newmode & S_IRWXG;
|
||||
mask |= tmpmask | (tmpmask >> 3) | (tmpmask << 3);
|
||||
symbolic++;
|
||||
break;
|
||||
}
|
||||
if (*symbolic == 'o') {
|
||||
tmpmask = newmode & S_IRWXO;
|
||||
mask |= tmpmask | (tmpmask >> 3) | (tmpmask >> 6);
|
||||
symbolic++;
|
||||
break;
|
||||
}
|
||||
if (*symbolic == 'r') {
|
||||
mask |= S_IRUSR | S_IRGRP | S_IROTH;
|
||||
continue;
|
||||
}
|
||||
if (*symbolic == 'w') {
|
||||
mask |= S_IWUSR | S_IWGRP | S_IWOTH;
|
||||
continue;
|
||||
}
|
||||
if (*symbolic == 'x') {
|
||||
mask |= EXE_MODES;
|
||||
continue;
|
||||
}
|
||||
if (*symbolic == 's') {
|
||||
mask |= S_ISUID | S_ISGID;
|
||||
continue;
|
||||
}
|
||||
if (*symbolic == 'X') {
|
||||
if (S_ISDIR(oldmode) || (oldmode & EXE_MODES))
|
||||
mask |= EXE_MODES;
|
||||
continue;
|
||||
}
|
||||
#ifdef S_ISVTX
|
||||
if (*symbolic == 't') {
|
||||
mask |= S_ISVTX;
|
||||
who |= S_ISVTX;
|
||||
continue;
|
||||
}
|
||||
#endif
|
||||
break;
|
||||
}
|
||||
switch (action) {
|
||||
case '=':
|
||||
if (who)
|
||||
newmode &= ~who;
|
||||
else
|
||||
newmode = 0;
|
||||
case '+':
|
||||
if (who)
|
||||
newmode |= who & mask;
|
||||
else
|
||||
newmode |= mask & (~u_mask);
|
||||
break;
|
||||
case '-':
|
||||
if (who)
|
||||
newmode &= ~(who & mask);
|
||||
else
|
||||
newmode &= ~mask | u_mask;
|
||||
}
|
||||
}
|
||||
if (*symbolic) symbolic++;
|
||||
}
|
||||
return(newmode);
|
||||
}
|
||||
|
||||
|
||||
/* Main module. The single option possible (-R) does not warrant a call to
|
||||
* the getopt() stuff.
|
||||
*/
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
int ex_code = 0;
|
||||
|
||||
argc--;
|
||||
argv++;
|
||||
|
||||
if (argc && strcmp(*argv, "-R") == 0) {
|
||||
argc--;
|
||||
argv++;
|
||||
rflag = 1;
|
||||
} else
|
||||
rflag = 0;
|
||||
|
||||
if (!argc--) usage();
|
||||
if (!strcmp(argv[0], "--")) { /* Allow chmod -- -r, as in Draft11 example */
|
||||
if (!argc--) usage();
|
||||
argv++;
|
||||
}
|
||||
symbolic = *argv++;
|
||||
if (!argc) usage();
|
||||
|
||||
if (*symbolic >= '0' && *symbolic <= '7') {
|
||||
new_mode = 0;
|
||||
while (*symbolic >= '0' && *symbolic <= '7')
|
||||
new_mode = (new_mode << 3) | (*symbolic++ & 07);
|
||||
if (*symbolic) usage();
|
||||
new_mode &= ALL_MODES;
|
||||
symbolic = (char *) 0;
|
||||
} else
|
||||
u_mask = umask(0);
|
||||
|
||||
while (argc--)
|
||||
if (do_change(*argv++)) ex_code = 1;
|
||||
return(ex_code);
|
||||
}
|
||||
|
||||
|
||||
/* Apply a mode change to a given file system element. */
|
||||
int do_change(char *name)
|
||||
{
|
||||
mode_t m;
|
||||
DIR *dirp;
|
||||
struct dirent *entp;
|
||||
char *namp;
|
||||
|
||||
if (lstat(name, &st)) {
|
||||
perror(name);
|
||||
return(1);
|
||||
}
|
||||
if (S_ISLNK(st.st_mode) && rflag) return(0); /* Note: violates POSIX. */
|
||||
if (!symbolic)
|
||||
m = new_mode;
|
||||
else
|
||||
m = parsemode(symbolic, st.st_mode);
|
||||
if (chmod(name, m)) {
|
||||
perror(name);
|
||||
errors = 1;
|
||||
} else
|
||||
errors = 0;
|
||||
|
||||
if (S_ISDIR(st.st_mode) && rflag) {
|
||||
if (!(dirp = opendir(name))) {
|
||||
perror(name);
|
||||
return(1);
|
||||
}
|
||||
if (name != path) strcpy(path, name);
|
||||
namp = path + strlen(path);
|
||||
*namp++ = '/';
|
||||
while (entp = readdir(dirp))
|
||||
if (entp->d_name[0] != '.' ||
|
||||
(entp->d_name[1] &&
|
||||
(entp->d_name[1] != '.' || entp->d_name[2]))) {
|
||||
strcpy(namp, entp->d_name);
|
||||
errors |= do_change(path);
|
||||
}
|
||||
closedir(dirp);
|
||||
*--namp = '\0';
|
||||
}
|
||||
return(errors);
|
||||
}
|
||||
|
||||
|
||||
/* Display Posix prototype */
|
||||
void usage()
|
||||
{
|
||||
std_err("Usage: chmod [-R] mode file...\n");
|
||||
exit(1);
|
||||
}
|
||||
|
|
@ -243,7 +243,6 @@
|
|||
./usr/bin/checknr minix-sys
|
||||
./usr/bin/chfn minix-sys
|
||||
./usr/bin/chgrp minix-sys
|
||||
./usr/bin/chmod minix-sys
|
||||
./usr/bin/chpass minix-sys
|
||||
./usr/bin/chsh minix-sys
|
||||
./usr/bin/ci minix-sys
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
MAN= ash.1 at.1 \
|
||||
bsfilt.1 cawf.1 chgrp.1 \
|
||||
chmod.1 cmp.1 compress.1 \
|
||||
cmp.1 compress.1 \
|
||||
cp.1 crc.1 crontab.1 dd.1 \
|
||||
dhrystone.1 dosdir.1 dosread.1 doswrite.1 \
|
||||
eject.1 \
|
||||
|
|
|
|||
|
|
@ -1,74 +0,0 @@
|
|||
.TH CHMOD 1
|
||||
.SH NAME
|
||||
chmod \- change access mode for files
|
||||
.SH SYNOPSIS
|
||||
\fBchmod [\fB\-R\fR] \fImode \fIfile\fR ...\fR
|
||||
.br
|
||||
.de FL
|
||||
.TP
|
||||
\\fB\\$1\\fR
|
||||
\\$2
|
||||
..
|
||||
.de EX
|
||||
.TP 20
|
||||
\\fB\\$1\\fR
|
||||
# \\$2
|
||||
..
|
||||
.SH OPTIONS
|
||||
.TP 5
|
||||
.B \-R
|
||||
# Change hierarchies recursively
|
||||
.SH EXAMPLES
|
||||
.TP 20
|
||||
.B chmod 755 file
|
||||
# Owner: rwx Group: r\-x Others: r\-x
|
||||
.TP 20
|
||||
.B chmod +x file1 file2
|
||||
# Make \fIfile1\fR and \fIfile2\fR executable
|
||||
.TP 20
|
||||
.B chmod a\-w file
|
||||
# Make \fIfile\fR read only
|
||||
.TP 20
|
||||
.B chmod u+s file
|
||||
# Turn on SETUID for \fIfile\fR
|
||||
.TP 20
|
||||
.B chmod \-R o+w dir
|
||||
# Allow writing for all files in dir
|
||||
.SH DESCRIPTION
|
||||
.PP
|
||||
The given mode is applied to each file in the file list. If the \fB\-R\fR
|
||||
flag is present, the files in a directory will be changed as well.
|
||||
The mode can be either absolute or symbolic. Absolute modes are given as an
|
||||
octal number that represents the new file mode. The mode bits are defined as
|
||||
follows:
|
||||
.ta 0.25i
|
||||
.nf
|
||||
.PP
|
||||
4000 Set effective user id on execution to file's owner id
|
||||
2000 Set effective group id on execution to file's group id
|
||||
0400 file is readable by the owner of the file
|
||||
0200 writeable by owner
|
||||
0100 executable by owner
|
||||
0070 same as above, for other users in the same group
|
||||
0007 same as above, for all other users
|
||||
.PP
|
||||
.fi
|
||||
Symbolic modes modify the current file mode in a specified way. The form is:
|
||||
.PP
|
||||
[who] op permissions { op permissions ...} {, [who] op ... }
|
||||
.PP
|
||||
The possibilities for \fIwho\fR are \fIu\fR, \fIg\fR, \fIo\fR, and \fIa\fR,
|
||||
standing for user, group, other and all, respectively.
|
||||
If \fIwho\fR is omitted, \fIa\fR is assumed, but the current umask is used.
|
||||
The op can be \fI+\fR, \fI-\fR, or \fI=\fR; \fI+\fR turns on the
|
||||
given permissions, \fI\- \fRturns them off; \fI=\fR sets the permissions
|
||||
exclusively for the given \fIwho\fR.
|
||||
For example \fIg=x\fR sets the group permissions to \fI--x\fR.
|
||||
.PP
|
||||
The possible permissions are \fIr\fR, \fIw\fR, \fIx\fR; which stand for read,
|
||||
write, and execute; \fIs\fR turns on the set effective user/group id bits.
|
||||
\fIs\fR only makes sense with \fIu\fR and \fIg\fR;\fR o+s\fR is
|
||||
harmless.
|
||||
.SH "SEE ALSO"
|
||||
.BR ls (1),
|
||||
.BR chmod (2).
|
||||
Loading…
Reference in New Issue