1 /* Copyright (C) 1998, 2000, 2002, 2003 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"
30 # if __ASSUME_32BITUIDS == 0
31 /* This variable is shared with all files that need to check for 32bit
33 extern int __libc_missing_32bit_uids
;
35 #endif /* __NR_chown32 */
38 __chown (const char *file
, uid_t owner
, gid_t group
)
40 #if __ASSUME_32BITUIDS > 0
41 return INLINE_SYSCALL (chown32
, 3, CHECK_STRING (file
), owner
, group
);
44 if (__libc_missing_32bit_uids
<= 0)
47 int saved_errno
= errno
;
49 result
= INLINE_SYSCALL (chown32
, 3, CHECK_STRING (file
), owner
, group
);
50 if (result
== 0 || errno
!= ENOSYS
)
53 __set_errno (saved_errno
);
54 __libc_missing_32bit_uids
= 1;
56 # endif /* __NR_chown32 */
58 if (((owner
+ 1) > (gid_t
) ((__kernel_uid_t
) -1U))
59 || ((group
+ 1) > (gid_t
) ((__kernel_gid_t
) -1U)))
65 return INLINE_SYSCALL (chown
, 3, CHECK_STRING (file
), owner
, group
);
68 libc_hidden_def (__chown
)
69 weak_alias (__chown
, chown
)