mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-19 11:30:06 +00:00
45139d5f77
1998-04-24 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * streams/Makefile (headers): Add sys/stropts.h. * streams/sys/stropts.h: New file. 1998-04-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/ttyname.c, sysdeps/unix/sysv/linux/ttyname_r.c: New files, like sysdeps/posix/ttyname*.c, but look in /dev/pts first. 1998-04-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/ptsname.c: Fix off-by-one bug in second argument of _itoa_word. 1998-04-24 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/syscalls.list (s_getcwd, s_getdents, s_pread64, s_pwrite64, s_reboot, s_sigpending, s_sigprocmask): Set caller to getcwd, getdents, pread64, pwrite64, reboot, sigpending, sigprocmask, resp., instead of EXTRA. * sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Remove s_pread64 and s_pwrite64.
134 lines
3.0 KiB
C
134 lines
3.0 KiB
C
/* Copyright (C) 1998 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/stat.h>
|
|
#include <termios.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include "pty-internal.h"
|
|
|
|
#include <stdio-common/_itoa.h>
|
|
#include <sys/sysmacros.h>
|
|
|
|
/* Given the file descriptor of a master pty, return the pathname
|
|
of the associated slave. */
|
|
|
|
static char namebuf[PTYNAMELEN];
|
|
extern const char __ptyname1[], __ptyname2[]; /* Defined in getpt.c. */
|
|
|
|
char *
|
|
ptsname (fd)
|
|
int fd;
|
|
{
|
|
return __ptsname_r (fd, namebuf, PTYNAMELEN) != 0 ? NULL : namebuf;
|
|
}
|
|
|
|
int
|
|
__ptsname_r (fd, buf, buflen)
|
|
int fd;
|
|
char *buf;
|
|
size_t buflen;
|
|
{
|
|
struct stat st;
|
|
int save = errno;
|
|
int ptyno;
|
|
char nbuf[PTYNAMELEN], idbuf[6];
|
|
char *cp;
|
|
|
|
#ifdef TIOCGPTN
|
|
static int tiocgptn_works = 1;
|
|
#endif
|
|
|
|
if (!buf)
|
|
{
|
|
__set_errno (EINVAL);
|
|
return EINVAL;
|
|
}
|
|
|
|
if (!__isatty (fd))
|
|
{
|
|
__set_errno (ENOTTY);
|
|
return ENOTTY;
|
|
}
|
|
|
|
#ifdef TIOCGPTN
|
|
if (tiocgptn_works)
|
|
{
|
|
if (ioctl (fd, TIOCGPTN, &ptyno) == 0)
|
|
goto gotit;
|
|
else
|
|
{
|
|
if(errno != EINVAL)
|
|
return errno;
|
|
else
|
|
tiocgptn_works = 0;
|
|
}
|
|
}
|
|
#endif
|
|
if (__fxstat (_STAT_VER, fd, &st) < 0)
|
|
return errno;
|
|
|
|
ptyno = minor (st.st_rdev);
|
|
if (major (st.st_rdev) == 4)
|
|
ptyno -= 128;
|
|
|
|
#ifdef TIOCGPTN
|
|
gotit:
|
|
#endif
|
|
/* Two different possible naming schemes for pty slaves:
|
|
the SVr4 way. */
|
|
|
|
idbuf[5] = '\0';
|
|
__stpcpy (__stpcpy (nbuf, "/dev/pts/"),
|
|
_itoa_word (ptyno, &idbuf[5], 10, 0));
|
|
if (__xstat (_STAT_VER, nbuf, &st) < 0)
|
|
{
|
|
if (errno != ENOENT)
|
|
return errno;
|
|
|
|
/* ...and the BSD way. */
|
|
nbuf[5] = 't';
|
|
nbuf[7] = 'y';
|
|
nbuf[8] = __ptyname1[ptyno / 16];
|
|
nbuf[9] = __ptyname2[ptyno % 16];
|
|
nbuf[10] = '\0';
|
|
|
|
if (__xstat (_STAT_VER, nbuf, &st) < 0)
|
|
return errno;
|
|
}
|
|
|
|
if (buflen < strlen (nbuf) + 1)
|
|
{
|
|
__set_errno (ERANGE);
|
|
return ERANGE;
|
|
}
|
|
|
|
cp = __stpncpy (buf, nbuf, buflen);
|
|
cp[0] = '\0';
|
|
|
|
__set_errno (save);
|
|
return 0;
|
|
}
|
|
weak_alias (__ptsname_r, ptsname_r)
|