]>
Commit | Line | Data |
---|---|---|
04277e02 | 1 | /* Copyright (C) 1995-2019 Free Software Foundation, Inc. |
3e5f5557 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995. | |
28f540f4 | 4 | |
3e5f5557 | 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. | |
28f540f4 | 9 | |
3e5f5557 UD |
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. |
28f540f4 | 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/>. */ | |
28f540f4 | 18 | |
d2f5be2a | 19 | #include <sys/sem.h> |
40c0a780 | 20 | #include <stdarg.h> |
973209d8 | 21 | #include <ipc_priv.h> |
e9dcb080 | 22 | #include <sysdep.h> |
b5567b2a | 23 | #include <shlib-compat.h> |
40c0a780 | 24 | #include <errno.h> |
973209d8 | 25 | |
8be1539f UD |
26 | /* Define a `union semun' suitable for Linux here. */ |
27 | union semun | |
28 | { | |
29 | int val; /* value for SETVAL */ | |
30 | struct semid_ds *buf; /* buffer for IPC_STAT & IPC_SET */ | |
31 | unsigned short int *array; /* array for GETALL & SETALL */ | |
32 | struct seminfo *__buf; /* buffer for IPC_INFO */ | |
33 | }; | |
34 | ||
40c0a780 AZ |
35 | #ifndef DEFAULT_VERSION |
36 | # define DEFAULT_VERSION GLIBC_2_2 | |
b5567b2a | 37 | #endif |
28f540f4 | 38 | |
d2f5be2a | 39 | int |
40c0a780 | 40 | __new_semctl (int semid, int semnum, int cmd, ...) |
d2f5be2a | 41 | { |
40c0a780 | 42 | union semun arg = { 0 }; |
8be1539f UD |
43 | va_list ap; |
44 | ||
faaa6f62 | 45 | /* Get the argument only if required. */ |
faaa6f62 UD |
46 | switch (cmd) |
47 | { | |
48 | case SETVAL: /* arg.val */ | |
49 | case GETALL: /* arg.array */ | |
50 | case SETALL: | |
51 | case IPC_STAT: /* arg.buf */ | |
52 | case IPC_SET: | |
53 | case SEM_STAT: | |
54 | case IPC_INFO: /* arg.__buf */ | |
55 | case SEM_INFO: | |
56 | va_start (ap, cmd); | |
57 | arg = va_arg (ap, union semun); | |
58 | va_end (ap); | |
59 | break; | |
60 | } | |
8be1539f | 61 | |
40c0a780 AZ |
62 | #ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS |
63 | return INLINE_SYSCALL_CALL (semctl, semid, semnum, cmd | __IPC_64, | |
64 | arg.array); | |
65 | #else | |
66 | return INLINE_SYSCALL_CALL (ipc, IPCOP_semctl, semid, semnum, cmd | __IPC_64, | |
67 | SEMCTL_ARG_ADDRESS (arg)); | |
b5567b2a | 68 | #endif |
40c0a780 AZ |
69 | } |
70 | versioned_symbol (libc, __new_semctl, semctl, DEFAULT_VERSION); | |
71 | ||
0482576e | 72 | |
40c0a780 AZ |
73 | #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2) |
74 | /* Since semctl use a variadic argument for semid_ds there is not need to | |
75 | define and tie the compatibility symbol to the old 'union semun' | |
76 | definition. */ | |
0482576e | 77 | int |
40c0a780 AZ |
78 | attribute_compat_text_section |
79 | __old_semctl (int semid, int semnum, int cmd, ...) | |
0482576e | 80 | { |
40c0a780 | 81 | union semun arg = { 0 }; |
0482576e UD |
82 | va_list ap; |
83 | ||
faaa6f62 | 84 | /* Get the argument only if required. */ |
faaa6f62 UD |
85 | switch (cmd) |
86 | { | |
87 | case SETVAL: /* arg.val */ | |
88 | case GETALL: /* arg.array */ | |
89 | case SETALL: | |
90 | case IPC_STAT: /* arg.buf */ | |
91 | case IPC_SET: | |
92 | case SEM_STAT: | |
93 | case IPC_INFO: /* arg.__buf */ | |
94 | case SEM_INFO: | |
95 | va_start (ap, cmd); | |
96 | arg = va_arg (ap, union semun); | |
97 | va_end (ap); | |
98 | break; | |
99 | } | |
0482576e | 100 | |
40c0a780 AZ |
101 | # ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS |
102 | return INLINE_SYSCALL_CALL (semctl, semid, semnum, cmd, arg.array); | |
103 | # else | |
104 | return INLINE_SYSCALL_CALL (ipc, IPCOP_semctl, semid, semnum, cmd, | |
105 | SEMCTL_ARG_ADDRESS (arg)); | |
106 | # endif | |
0482576e | 107 | } |
40c0a780 AZ |
108 | compat_symbol (libc, __old_semctl, semctl, GLIBC_2_0); |
109 | #endif |