2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
219 lines
6 KiB
Groff
219 lines
6 KiB
Groff
.\" $NetBSD: getttyent.3,v 1.18 2006/04/23 16:46:32 wiz Exp $
|
|
.\"
|
|
.\" Copyright (c) 1989, 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.
|
|
.\"
|
|
.\" @(#)getttyent.3 8.1 (Berkeley) 6/4/93
|
|
.\"
|
|
.Dd April 18, 2006
|
|
.Dt GETTTYENT 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm getttyent ,
|
|
.Nm getttynam ,
|
|
.Nm setttyent ,
|
|
.Nm setttyentpath ,
|
|
.Nm endttyent
|
|
.Nd get ttys file entry
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In ttyent.h
|
|
.Ft struct ttyent *
|
|
.Fn getttyent
|
|
.Ft struct ttyent *
|
|
.Fn getttynam "char *name"
|
|
.Ft int
|
|
.Fn setttyent void
|
|
.Ft int
|
|
.Fn setttyentpath "const char *path"
|
|
.Ft int
|
|
.Fn endttyent void
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn getttyent ,
|
|
and
|
|
.Fn getttynam
|
|
functions
|
|
each return a pointer to an object, with the following structure,
|
|
containing the broken-out fields of a line from the tty description
|
|
file.
|
|
.Bd -literal
|
|
struct ttyent {
|
|
char *ty_name; /* terminal device name */
|
|
char *ty_getty; /* command to execute */
|
|
char *ty_type; /* terminal type */
|
|
#define TTY_ON 0x01 /* enable logins */
|
|
#define TTY_SECURE 0x02 /* allow uid of 0 to login */
|
|
#define TTY_LOCAL 0x04 /* set 'CLOCAL' on open (dev. specific) */
|
|
#define TTY_RTSCTS 0x08 /* set 'CRTSCTS' on open (dev. specific) */
|
|
#define TTY_SOFTCAR 0x10 /* ignore hardware carrier (dev. spec.) */
|
|
#define TTY_MDMBUF 0x20 /* set 'MDMBUF' on open (dev. specific) */
|
|
#define TTY_DTRCTS 0x40 /* set 'CDTRCTS' on open (dev. specific) */
|
|
int ty_status; /* flag values */
|
|
char *ty_window; /* command for window manager */
|
|
char *ty_comment; /* comment field */
|
|
char *ty_class; /* category of tty usage */
|
|
};
|
|
.Ed
|
|
.Pp
|
|
The fields are as follows:
|
|
.Bl -tag -width ty_comment
|
|
.It Fa ty_name
|
|
The name of the character-special file.
|
|
.It Fa ty_getty
|
|
The name of the command invoked by
|
|
.Xr init 8
|
|
to initialize tty line characteristics.
|
|
.It Fa ty_type
|
|
The name of the default terminal type connected to this tty line.
|
|
.It Fa ty_status
|
|
A mask of bit fields which indicate various actions allowed on this
|
|
tty line.
|
|
The possible flags are as follows:
|
|
.Bl -tag -width TTY_SOFTCAR
|
|
.It Dv TTY_ON
|
|
Enables logins (i.e.,
|
|
.Xr init 8
|
|
will start the command referenced by
|
|
.Fa ty_getty
|
|
on this entry).
|
|
.It Dv TTY_SECURE
|
|
Allow users with a uid of 0 to login on this terminal.
|
|
.It Dv TTY_LOCAL
|
|
If the terminal port's driver supports it, cause the line
|
|
to be treated as ``local.''
|
|
.It Dv TTY_MDMBUF
|
|
If the terminal port's driver supports it, use
|
|
DTR/DCD hardware flow control on the line by default.
|
|
.It Dv TTY_RTSCTS
|
|
If the terminal port's driver supports it, use
|
|
full-duplex RTS/CTS hardware flow control on the line
|
|
by default.
|
|
.It Dv TTY_SOFTCAR
|
|
If the terminal port's driver supports it, ignore hardware
|
|
carrier on the line.
|
|
.El
|
|
.It Fa ty_window
|
|
The command to execute for a window system associated with the line.
|
|
.It Fa ty_comment
|
|
Any trailing comment field, with any leading hash marks (``#'') or
|
|
whitespace removed.
|
|
.It Fa ty_class
|
|
A key indexing into a termcap-style database (/etc/ttyclasses)
|
|
of attributes for this class of tty.
|
|
No attributes are currently defined or used,
|
|
so there are currently no functions to retrieve them.
|
|
.El
|
|
.Pp
|
|
If any of the fields pointing to character strings are unspecified,
|
|
they are returned as null pointers.
|
|
The field
|
|
.Fa ty_status
|
|
will be zero if no flag values are specified.
|
|
.Pp
|
|
See
|
|
.Xr ttys 5
|
|
for a more complete discussion of the meaning and usage of the
|
|
fields.
|
|
.Pp
|
|
The
|
|
.Fn getttyent
|
|
function
|
|
reads the next line from the ttys file, opening the file if necessary.
|
|
The
|
|
.Fn setttyent
|
|
function
|
|
rewinds the file if open, or opens the file if it is unopened.
|
|
The
|
|
.Fn setttyentpath
|
|
function
|
|
is equivalent to
|
|
.Fn setttyent
|
|
but accepts an additional argument to read the ttys information from
|
|
an alternate file instead of the default location
|
|
.Pq defined in Dv _PATH_TTYS .
|
|
The
|
|
.Fn endttyent
|
|
function
|
|
closes any open files.
|
|
.Pp
|
|
The
|
|
.Fn getttynam
|
|
function
|
|
searches from the beginning of the file until a matching
|
|
.Fa name
|
|
is found
|
|
(or until
|
|
.Dv EOF
|
|
is encountered).
|
|
.Sh RETURN VALUES
|
|
The routines
|
|
.Fn getttyent
|
|
and
|
|
.Fn getttynam
|
|
return a null pointer on
|
|
.Dv EOF
|
|
or error.
|
|
The
|
|
.Fn setttyent
|
|
and
|
|
.Fn setttyentpath
|
|
functions
|
|
and
|
|
.Fn endttyent
|
|
return 0 on failure and 1 on success.
|
|
.Sh FILES
|
|
.Bl -tag -width /etc/ttys -compact
|
|
.It Pa /etc/ttys
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr login 1 ,
|
|
.Xr ttyslot 3 ,
|
|
.Xr gettytab 5 ,
|
|
.Xr termcap 5 ,
|
|
.Xr ttys 5 ,
|
|
.Xr getty 8 ,
|
|
.Xr init 8 ,
|
|
.Xr ttyflags 8
|
|
.Sh HISTORY
|
|
The
|
|
.Fn getttyent ,
|
|
.Fn getttynam ,
|
|
.Fn setttyent ,
|
|
and
|
|
.Fn endttyent
|
|
functions appeared in
|
|
.Bx 4.3 .
|
|
The
|
|
.Fn setttyentpath
|
|
function appeared in
|
|
.Nx 4.0 .
|
|
.Sh BUGS
|
|
These functions use static data storage;
|
|
if the data is needed for future use, it should be
|
|
copied before any subsequent calls overwrite it.
|