1 /* Copyright (C) 1998, 2000 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
20 #include <sys/types.h>
21 #include <sys/fsuid.h>
24 #include <sys/syscall.h>
26 #include <linux/posix_types.h>
27 #include "kernel-features.h"
31 extern int __syscall_setfsuid (__kernel_uid_t
);
33 # ifdef __NR_setfsuid32
34 extern int __syscall_setfsuid32 (__kernel_uid32_t
);
35 # if __ASSUME_32BITUIDS == 0
36 /* This variable is shared with all files that need to check for 32bit
38 extern int __libc_missing_32bit_uids
;
40 # endif /* __NR_setfsuid32 */
45 # if __ASSUME_32BITUIDS > 0
46 return INLINE_SYSCALL (setfsuid32
, 1, uid
);
48 # ifdef __NR_setfsuid32
49 if (__libc_missing_32bit_uids
<= 0)
52 int saved_errno
= errno
;
54 result
= INLINE_SYSCALL (setfsuid32
, 1, uid
);
55 if (result
== 0 || errno
!= ENOSYS
)
58 __set_errno (saved_errno
);
59 __libc_missing_32bit_uids
= 1;
61 # endif /* __NR_setfsuid32 */
63 if (uid
!= (uid_t
) ((__kernel_uid_t
) uid
))
69 return INLINE_SYSCALL (setfsuid
, 1, uid
);