mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-19 03:20:05 +00:00
49f3a75859
* misc/getusershell.c: Make strings in okshells array const. * misc/regexp.c: Add const to cast to avoid warnings. * sysdeps/unix/sysv/linux/llseek.c: Add prototype for __llseek. * sysdeps/unix/sysv/linux/i386/setresuid.c: Add prototype for __setresuid. * sysdeps/unix/sysv/linux/i386/setresgid.c: Add prototype for setresgid. * misc/error.c: Add prototypes for __error and __error_at_line. * misc/mntent_r.c (__getmntent_r): Add break at end of switch statement to avoid warning.
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/* Copyright (C) 1998, 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 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 <errno.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <linux/posix_types.h>
|
|
|
|
#include <sysdep.h>
|
|
#include <sys/syscall.h>
|
|
#include "kernel-features.h"
|
|
|
|
#ifdef __NR_setresuid
|
|
|
|
extern int __syscall_setresuid (__kernel_uid_t rgid, __kernel_uid_t egid,
|
|
__kernel_uid_t sgid);
|
|
|
|
# ifdef __NR_setresuid32
|
|
extern int __syscall_setresuid32 (__kernel_uid32_t rgid, __kernel_uid32_t egid,
|
|
__kernel_uid32_t sgid);
|
|
# if __ASSUME_32BITUIDS == 0
|
|
/* This variable is shared with all files that need to check for 32bit
|
|
uids. */
|
|
extern int __libc_missing_32bit_uids;
|
|
# endif
|
|
# endif /* __NR_setresuid32 */
|
|
|
|
extern int __setresuid (uid_t ruid, uid_t euid, uid_t suid);
|
|
|
|
int
|
|
__setresuid (uid_t ruid, uid_t euid, uid_t suid)
|
|
{
|
|
# if __ASSUME_32BITUIDS > 0
|
|
return INLINE_SYSCALL (setresuid32, 3, ruid, euid, suid);
|
|
# else
|
|
# ifdef __NR_setresuid32
|
|
if (__libc_missing_32bit_uids <= 0)
|
|
{
|
|
int result;
|
|
int saved_errno = errno;
|
|
|
|
result = INLINE_SYSCALL (setresuid32, 3, ruid, euid, suid);
|
|
if (result == 0 || errno != ENOSYS)
|
|
return result;
|
|
|
|
__set_errno (saved_errno);
|
|
__libc_missing_32bit_uids = 1;
|
|
}
|
|
# endif /* __NR_setresuid32 */
|
|
|
|
if (((ruid + 1) > (uid_t) ((__kernel_uid_t) -1U))
|
|
|| ((euid + 1) > (uid_t) ((__kernel_uid_t) -1U))
|
|
|| ((suid + 1) > (uid_t) ((__kernel_uid_t) -1U)))
|
|
{
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
return INLINE_SYSCALL (setresuid, 3, ruid, euid, suid);
|
|
# endif
|
|
}
|
|
weak_alias (__setresuid, setresuid)
|
|
#endif
|