1 /* Copyright (C) 2000, 2001, 2003, 2006 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
22 #include <sys/syscall.h>
23 #include <bp-checks.h>
25 #include <linux/posix_types.h>
26 #include <kernel-features.h>
29 # if __ASSUME_32BITUIDS == 0
30 /* This variable is shared with all files that need to check for 32bit
32 extern int __libc_missing_32bit_uids
;
34 # endif /* __NR_lchown32 */
37 __lchown (const char *file
, uid_t owner
, gid_t group
)
39 # if __ASSUME_32BITUIDS > 0
40 return INLINE_SYSCALL (lchown32
, 3, CHECK_STRING (file
), owner
, group
);
43 if (__libc_missing_32bit_uids
<= 0)
46 int saved_errno
= errno
;
48 result
= INLINE_SYSCALL (lchown32
, 3, CHECK_STRING (file
), owner
, group
);
49 if (result
== 0 || errno
!= ENOSYS
)
52 __set_errno (saved_errno
);
53 __libc_missing_32bit_uids
= 1;
55 # endif /* __NR_lchown32 */
57 if (((owner
+ 1) > (uid_t
) ((__kernel_uid_t
) -1U))
58 || ((group
+ 1) > (gid_t
) ((__kernel_gid_t
) -1U)))
64 return INLINE_SYSCALL (lchown
, 3, CHECK_STRING (file
), owner
, group
);
68 weak_alias (__lchown
, lchown
)