mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 23:10:06 +00:00
2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/* Copyright (C) 1998-2021 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <paths.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/ioctl.h>
|
|
#include <termios.h>
|
|
#include <unistd.h>
|
|
|
|
#include <_itoa.h>
|
|
|
|
/* Directory where we can find the slave pty nodes. */
|
|
#define _PATH_DEVPTS "/dev/pts/"
|
|
|
|
/* Static buffer for `ptsname'. */
|
|
static char buffer[sizeof (_PATH_DEVPTS) + 20];
|
|
|
|
|
|
/* Return the pathname of the pseudo terminal slave associated with
|
|
the master FD is open on, or NULL on errors.
|
|
The returned storage is good until the next call to this function. */
|
|
char *
|
|
ptsname (int fd)
|
|
{
|
|
return __ptsname_r (fd, buffer, sizeof (buffer)) != 0 ? NULL : buffer;
|
|
}
|
|
|
|
|
|
/* Store at most BUFLEN characters of the pathname of the slave pseudo
|
|
terminal associated with the master FD is open on in BUF.
|
|
Return 0 on success, otherwise an error number. */
|
|
int
|
|
__ptsname_r (int fd, char *buf, size_t buflen)
|
|
{
|
|
int save_errno = errno;
|
|
unsigned int ptyno;
|
|
|
|
if (__ioctl (fd, TIOCGPTN, &ptyno) == 0)
|
|
{
|
|
/* Buffer we use to print the number in. For a maximum size for
|
|
`int' of 8 bytes we never need more than 20 digits. */
|
|
char numbuf[21];
|
|
const char *devpts = _PATH_DEVPTS;
|
|
const size_t devptslen = strlen (_PATH_DEVPTS);
|
|
char *p;
|
|
|
|
numbuf[sizeof (numbuf) - 1] = '\0';
|
|
p = _itoa_word (ptyno, &numbuf[sizeof (numbuf) - 1], 10, 0);
|
|
|
|
if (buflen < devptslen + (&numbuf[sizeof (numbuf)] - p))
|
|
{
|
|
__set_errno (ERANGE);
|
|
return ERANGE;
|
|
}
|
|
|
|
memcpy (__stpcpy (buf, devpts), p, &numbuf[sizeof (numbuf)] - p);
|
|
}
|
|
else
|
|
/* Bad file descriptor, or not a ptmx descriptor. */
|
|
return errno;
|
|
|
|
__set_errno (save_errno);
|
|
return 0;
|
|
}
|
|
weak_alias (__ptsname_r, ptsname_r)
|