mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-04 19:00:09 +00:00
76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/* Copyright (C) 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 <sysdep.h>
|
|
#include <sys/syscall.h>
|
|
#include <bp-checks.h>
|
|
|
|
#include <linux/posix_types.h>
|
|
#include "kernel-features.h"
|
|
|
|
extern int __syscall_lchown (const char *__unbounded __file,
|
|
__kernel_uid_t __owner, __kernel_gid_t __group);
|
|
|
|
# ifdef __NR_lchown32
|
|
extern int __syscall_lchown32 (const char *__unbounded __file,
|
|
__kernel_uid32_t __owner,
|
|
__kernel_gid32_t __group);
|
|
# 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_lchown32 */
|
|
|
|
int
|
|
__lchown (const char *file, uid_t owner, gid_t group)
|
|
{
|
|
# if __ASSUME_32BITUIDS > 0
|
|
return INLINE_SYSCALL (lchown32, 3, CHECK_STRING (file), owner, group);
|
|
# else
|
|
# ifdef __NR_lchown32
|
|
if (__libc_missing_32bit_uids <= 0)
|
|
{
|
|
int result;
|
|
int saved_errno = errno;
|
|
|
|
result = INLINE_SYSCALL (lchown32, 3, CHECK_STRING (file), owner, group);
|
|
if (result == 0 || errno != ENOSYS)
|
|
return result;
|
|
|
|
__set_errno (saved_errno);
|
|
__libc_missing_32bit_uids = 1;
|
|
}
|
|
# endif /* __NR_lchown32 */
|
|
|
|
if (((owner + 1) > (uid_t) ((__kernel_uid_t) -1U))
|
|
|| ((group + 1) > (gid_t) ((__kernel_gid_t) -1U)))
|
|
{
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
return INLINE_SYSCALL (lchown, 3, CHECK_STRING (file), owner, group);
|
|
# endif
|
|
}
|
|
|
|
weak_alias (__lchown, lchown)
|