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568035b7 | 1 | /* Copyright (C) 2002-2013 Free Software Foundation, Inc. |
76a50749 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
76a50749 UD |
18 | |
19 | #include <errno.h> | |
20 | #include <semaphore.h> | |
21 | #include <lowlevellock.h> | |
22 | #include <shlib-compat.h> | |
23 | #include "semaphoreP.h" | |
3d2dd6ca | 24 | #include <kernel-features.h> |
76a50749 UD |
25 | |
26 | ||
27 | int | |
28 | __new_sem_init (sem, pshared, value) | |
29 | sem_t *sem; | |
30 | int pshared; | |
31 | unsigned int value; | |
32 | { | |
33 | /* Parameter sanity check. */ | |
34 | if (__builtin_expect (value > SEM_VALUE_MAX, 0)) | |
35 | { | |
36 | __set_errno (EINVAL); | |
37 | return -1; | |
38 | } | |
39 | ||
40 | /* Map to the internal type. */ | |
3d2dd6ca | 41 | struct new_sem *isem = (struct new_sem *) sem; |
76a50749 | 42 | |
3d2dd6ca UD |
43 | /* Use the values the user provided. */ |
44 | isem->value = value; | |
45 | #ifdef __ASSUME_PRIVATE_FUTEX | |
46 | isem->private = pshared ? 0 : FUTEX_PRIVATE_FLAG; | |
47 | #else | |
48 | isem->private = pshared ? 0 : THREAD_GETMEM (THREAD_SELF, | |
49 | header.private_futex); | |
50 | #endif | |
76a50749 | 51 | |
3d2dd6ca | 52 | isem->nwaiters = 0; |
76a50749 UD |
53 | |
54 | return 0; | |
55 | } | |
56 | versioned_symbol (libpthread, __new_sem_init, sem_init, GLIBC_2_1); | |
3d2dd6ca UD |
57 | |
58 | ||
59 | ||
ad3bf20c | 60 | #if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1) |
3d2dd6ca UD |
61 | int |
62 | attribute_compat_text_section | |
63 | __old_sem_init (sem, pshared, value) | |
64 | sem_t *sem; | |
65 | int pshared; | |
66 | unsigned int value; | |
67 | { | |
68 | /* Parameter sanity check. */ | |
69 | if (__builtin_expect (value > SEM_VALUE_MAX, 0)) | |
70 | { | |
71 | __set_errno (EINVAL); | |
72 | return -1; | |
73 | } | |
74 | ||
75 | /* Map to the internal type. */ | |
76 | struct old_sem *isem = (struct old_sem *) sem; | |
77 | ||
78 | /* Use the value the user provided. */ | |
79 | isem->value = value; | |
80 | ||
81 | /* We cannot store the PSHARED attribute. So we always use the | |
82 | operations needed for shared semaphores. */ | |
83 | ||
84 | return 0; | |
85 | } | |
ad3bf20c UD |
86 | compat_symbol (libpthread, __old_sem_init, sem_init, GLIBC_2_0); |
87 | #endif |