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d4697bc9 | 1 | /* Copyright (C) 1995-2014 Free Software Foundation, Inc. |
cd090f71 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
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. | |
cd090f71 UD |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
cd090f71 | 14 | |
41bdb6e2 | 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/>. */ | |
cd090f71 UD |
18 | |
19 | #include <errno.h> | |
20 | #include <stdarg.h> | |
21 | #include <sys/sem.h> | |
22 | #include <ipc_priv.h> | |
23 | ||
24 | #include <sysdep.h> | |
25 | #include <string.h> | |
26 | #include <sys/syscall.h> | |
27 | ||
b5567b2a | 28 | #include <shlib-compat.h> |
cd090f71 UD |
29 | |
30 | struct __old_semid_ds | |
31 | { | |
32 | struct __old_ipc_perm sem_perm; /* operation permission struct */ | |
33 | __time_t sem_otime; /* last semop() time */ | |
34 | __time_t sem_ctime; /* last time changed by semctl() */ | |
35 | struct sem *__sembase; /* ptr to first semaphore in array */ | |
36 | struct sem_queue *__sem_pending; /* pending operations */ | |
37 | struct sem_queue *__sem_pending_last; /* last pending operation */ | |
38 | struct sem_undo *__undo; /* ondo requests on this array */ | |
39 | unsigned short int sem_nsems; /* number of semaphores in set */ | |
40 | }; | |
41 | ||
42 | /* Define a `union semun' suitable for Linux here. */ | |
43 | union semun | |
44 | { | |
45 | int val; /* value for SETVAL */ | |
46 | struct semid_ds *buf; /* buffer for IPC_STAT & IPC_SET */ | |
47 | unsigned short int *array; /* array for GETALL & SETALL */ | |
48 | struct seminfo *__buf; /* buffer for IPC_INFO */ | |
d347a4ab | 49 | struct __old_semid_ds *__old_buf; |
cd090f71 UD |
50 | }; |
51 | ||
cd090f71 UD |
52 | /* Return identifier for array of NSEMS semaphores associated with |
53 | KEY. */ | |
b5567b2a | 54 | #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2) |
cd090f71 | 55 | int __old_semctl (int semid, int semnum, int cmd, ...); |
b5567b2a | 56 | #endif |
cd090f71 UD |
57 | int __new_semctl (int semid, int semnum, int cmd, ...); |
58 | ||
b5567b2a | 59 | #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2) |
cd090f71 | 60 | int |
4a381a81 | 61 | attribute_compat_text_section |
cd090f71 UD |
62 | __old_semctl (int semid, int semnum, int cmd, ...) |
63 | { | |
64 | union semun arg; | |
65 | va_list ap; | |
66 | ||
67 | va_start (ap, cmd); | |
68 | ||
69 | /* Get the argument. */ | |
70 | arg = va_arg (ap, union semun); | |
71 | ||
72 | va_end (ap); | |
73 | ||
d25c879d | 74 | return INLINE_SYSCALL (ipc, 5, IPCOP_semctl, semid, semnum, cmd, |
2e8a5c8c | 75 | &arg); |
cd090f71 | 76 | } |
b5567b2a UD |
77 | compat_symbol (libc, __old_semctl, semctl, GLIBC_2_0); |
78 | #endif | |
cd090f71 UD |
79 | |
80 | int | |
81 | __new_semctl (int semid, int semnum, int cmd, ...) | |
82 | { | |
83 | union semun arg; | |
84 | va_list ap; | |
85 | ||
86 | va_start (ap, cmd); | |
87 | ||
88 | /* Get the argument. */ | |
89 | arg = va_arg (ap, union semun); | |
90 | ||
91 | va_end (ap); | |
92 | ||
d25c879d | 93 | return INLINE_SYSCALL (ipc, 5, IPCOP_semctl, semid, semnum, cmd | __IPC_64, |
2e8a5c8c | 94 | &arg); |
cd090f71 UD |
95 | } |
96 | ||
b5567b2a | 97 | versioned_symbol (libc, __new_semctl, semctl, GLIBC_2_2); |