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a334319f | 1 | /* Copyright (C) 1998, 2000, 2002, 2003, 2004 Free Software Foundation, Inc. |
9ffbb612 UD |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
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. | |
9ffbb612 UD |
8 | |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
9ffbb612 | 13 | |
41bdb6e2 AJ |
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 | |
17 | 02111-1307 USA. */ | |
9ffbb612 UD |
18 | |
19 | #include <errno.h> | |
20 | #include <unistd.h> | |
85bd6331 | 21 | #include <setxid.h> |
d5ef95c8 | 22 | #include <linux/posix_types.h> |
a334319f | 23 | #include "kernel-features.h" |
2edb61e3 | 24 | |
313fed01 | 25 | |
5ca3d19c | 26 | #if defined __NR_setresgid || defined __NR_setresgid32 |
9ffbb612 | 27 | |
313fed01 | 28 | # ifdef __NR_setresgid32 |
313fed01 UD |
29 | # if __ASSUME_32BITUIDS == 0 |
30 | /* This variable is shared with all files that need to check for 32bit | |
31 | uids. */ | |
32 | extern int __libc_missing_32bit_uids; | |
33 | # endif | |
34 | # endif /* __NR_setresgid32 */ | |
35 | ||
9ffbb612 | 36 | int |
747bf98e | 37 | __setresgid (gid_t rgid, gid_t egid, gid_t sgid) |
9ffbb612 | 38 | { |
2edb61e3 UD |
39 | int result; |
40 | ||
5ca3d19c | 41 | # if __ASSUME_32BITUIDS > 0 || !defined __NR_setresgid |
85bd6331 | 42 | result = INLINE_SETXID_SYSCALL (setresgid32, 3, rgid, egid, sgid); |
313fed01 UD |
43 | # else |
44 | # ifdef __NR_setresgid32 | |
cd090f71 | 45 | if (__libc_missing_32bit_uids <= 0) |
313fed01 | 46 | { |
313fed01 UD |
47 | int saved_errno = errno; |
48 | ||
85bd6331 | 49 | result = INLINE_SETXID_SYSCALL (setresgid32, 3, rgid, egid, sgid); |
2edb61e3 UD |
50 | if (result == 0) |
51 | goto out; | |
52 | if (errno != ENOSYS) | |
313fed01 UD |
53 | return result; |
54 | ||
55 | __set_errno (saved_errno); | |
56 | __libc_missing_32bit_uids = 1; | |
57 | } | |
58 | # endif /* __NR_setresgid32 */ | |
59 | ||
0482576e UD |
60 | if (((rgid + 1) > (gid_t) ((__kernel_gid_t) -1U)) |
61 | || ((egid + 1) > (gid_t) ((__kernel_gid_t) -1U)) | |
62 | || ((sgid + 1) > (gid_t) ((__kernel_gid_t) -1U))) | |
9ffbb612 UD |
63 | { |
64 | __set_errno (EINVAL); | |
65 | return -1; | |
66 | } | |
67 | ||
85bd6331 | 68 | result = INLINE_SETXID_SYSCALL (setresgid, 3, rgid, egid, sgid); |
2edb61e3 UD |
69 | # ifdef __NR_setresgid32 |
70 | out: | |
71 | # endif | |
313fed01 | 72 | # endif |
2edb61e3 | 73 | |
2edb61e3 | 74 | return result; |
9ffbb612 | 75 | } |
747bf98e | 76 | libc_hidden_def (__setresgid) |
2edb61e3 | 77 | #ifndef __setresgid |
747bf98e | 78 | weak_alias (__setresgid, setresgid) |
2edb61e3 | 79 | #endif |
747bf98e RM |
80 | |
81 | #else | |
82 | ||
a334319f | 83 | #include <sysdeps/generic/setresgid.c> |
747bf98e | 84 | |
9ffbb612 | 85 | #endif |