mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-03 10:21:05 +00:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/* Copyright (C) 1998, 1999, 2000 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <errno.h>
|
|
#include <sys/syscall.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
|
|
#include "kernel-features.h"
|
|
|
|
#if defined __NR_setresuid32 || __ASSUME_SETRESUID_SYSCALL > 0
|
|
|
|
extern int __setresuid (uid_t ruid, uid_t euid, uid_t suid);
|
|
|
|
int
|
|
seteuid (uid_t uid)
|
|
{
|
|
int result;
|
|
|
|
if (uid == (uid_t) ~0)
|
|
{
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
/* First try the syscall. */
|
|
result = __setresuid (-1, uid, -1);
|
|
# if __ASSUME_SETRESUID_SYSCALL == 0
|
|
if (result == -1 && errno == ENOSYS)
|
|
/* No system call available. Use emulation. This may not work
|
|
since `setreuid' also sets the saved user ID when UID is not
|
|
equal to the real user ID, making it impossible to switch back. */
|
|
result = __setreuid (-1, uid);
|
|
# endif
|
|
|
|
return result;
|
|
}
|
|
#else
|
|
# include <sysdeps/unix/bsd/seteuid.c>
|
|
#endif
|