mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-02 17:50:20 +00:00
1503837c6a
1999-11-18 Andreas Jaeger <aj@suse.de> * sysdeps/unix/sysv/linux/linux_fsinfo.h: Sorted entries and added comments. * sysdeps/unix/sysv/linux/getpt.c: Include linux_fsinfo.h instead of defining *_SUPER_MAGIC. * sysdeps/unix/sysv/linux/grantpt.c: Likewise.
64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/* Copyright (C) 1998, 1999 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 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 <limits.h>
|
|
#include <stdlib.h>
|
|
#include <sys/statfs.h>
|
|
|
|
#include "linux_fsinfo.h"
|
|
|
|
/* Prototype for function that changes ownership and access permission
|
|
for slave pseudo terminals that do not live on a `devpts'
|
|
filesystem. */
|
|
int __unix_grantpt (int fd);
|
|
|
|
/* Prototype for private function that gets the name of the slave
|
|
pseudo terminal in a safe way. */
|
|
static int pts_name (int fd, char **pts, size_t buf_len);
|
|
|
|
/* Change the ownership and access permission of the slave pseudo
|
|
terminal associated with the master pseudo terminal specified
|
|
by FD. */
|
|
int
|
|
grantpt (int fd)
|
|
{
|
|
struct statfs fsbuf;
|
|
#ifdef PATH_MAX
|
|
char _buf[PATH_MAX];
|
|
#else
|
|
char _buf[512];
|
|
#endif
|
|
char *buf = _buf;
|
|
|
|
if (pts_name (fd, &buf, sizeof (_buf)))
|
|
return -1;
|
|
|
|
if (__statfs (buf, &fsbuf) < 0)
|
|
return -1;
|
|
|
|
/* If the slave pseudo terminal lives on a `devpts' filesystem, the
|
|
ownership and access permission are already set. */
|
|
if (fsbuf.f_type == DEVPTS_SUPER_MAGIC || fsbuf.f_type == DEVFS_SUPER_MAGIC)
|
|
return 0;
|
|
|
|
return __unix_grantpt (fd);
|
|
}
|
|
|
|
#define grantpt __unix_grantpt
|
|
#include <sysdeps/unix/grantpt.c>
|