1 /* Copyright (C) 2000,2003,2005,2006 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, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
23 #include <sys/syscall.h>
24 #include <bp-checks.h>
26 #include <linux/posix_types.h>
27 #include <kernel-features.h>
31 # if __ASSUME_32BITUIDS == 0
32 /* This variable is shared with all files that need to check for 32bit
34 extern int __libc_missing_32bit_uids;
36 # endif /* __NR_lchown32 */
39 __lchown (const char *file, uid_t owner, gid_t group)
41 # if __ASSUME_32BITUIDS > 0
42 return INLINE_SYSCALL (lchown32, 3, CHECK_STRING (file), owner, group);
45 if (__libc_missing_32bit_uids <= 0)
48 int saved_errno = errno;
50 result = INLINE_SYSCALL (lchown32, 3, CHECK_STRING (file), owner, group);
51 if (result == 0 || errno != ENOSYS)
54 __set_errno (saved_errno);
55 __libc_missing_32bit_uids = 1;
57 # endif /* __NR_lchown32 */
59 if (((owner + 1) > (uid_t) ((__kernel_uid_t) -1U))
60 || ((group + 1) > (gid_t) ((__kernel_gid_t) -1U)))
66 return INLINE_SYSCALL (lchown, 3, CHECK_STRING (file), owner, group);
70 weak_alias (__lchown, lchown)
73 # include <io/lchown.c>