mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 00:31:08 +00:00
04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/* ptsname -- return the name of a pty slave given an FD to the pty master
|
|
Copyright (C) 1999-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <sys/stat.h>
|
|
#include <hurd.h>
|
|
#include <hurd/fd.h>
|
|
#include <hurd/term.h>
|
|
|
|
|
|
/* 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)
|
|
{
|
|
static string_t peername;
|
|
error_t err;
|
|
|
|
err = __ptsname_r (fd, peername, sizeof (peername));
|
|
|
|
return err ? NULL : peername;
|
|
}
|
|
|
|
|
|
/* We don't need STP, but fill it for conformity with the Linux version... */
|
|
int
|
|
__ptsname_internal (int fd, char *buf, size_t buflen, struct stat64 *stp)
|
|
{
|
|
string_t peername;
|
|
size_t len;
|
|
error_t err;
|
|
|
|
if (err = HURD_DPORT_USE (fd, __term_get_peername (port, peername)))
|
|
return __hurd_dfail (fd, err), errno;
|
|
|
|
len = __strnlen (peername, sizeof peername - 1) + 1;
|
|
if (len > buflen)
|
|
{
|
|
errno = ERANGE;
|
|
return ERANGE;
|
|
}
|
|
|
|
if (stp)
|
|
{
|
|
if (__xstat64 (_STAT_VER, peername, stp) < 0)
|
|
return errno;
|
|
}
|
|
|
|
memcpy (buf, peername, len);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* 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)
|
|
{
|
|
return __ptsname_internal (fd, buf, buflen, NULL);
|
|
}
|
|
weak_alias (__ptsname_r, ptsname_r)
|