1 | /* Copyright (C) 1995-2018 Free Software Foundation, Inc. |
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 |
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 |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <sys/shm.h> |
20 | #include <stdarg.h> |
21 | #include <ipc_priv.h> |
22 | #include <sysdep.h> |
23 | #include <shlib-compat.h> |
24 | #include <errno.h> |
25 | |
26 | |
27 | #ifndef DEFAULT_VERSION |
28 | # define DEFAULT_VERSION GLIBC_2_2 |
29 | #endif |
30 | |
31 | |
32 | /* Provide operations to control over shared memory segments. */ |
33 | int |
34 | __new_shmctl (int shmid, int cmd, struct shmid_ds *buf) |
35 | { |
36 | #ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS |
37 | return INLINE_SYSCALL_CALL (shmctl, shmid, cmd | __IPC_64, buf); |
38 | #else |
39 | return INLINE_SYSCALL_CALL (ipc, IPCOP_shmctl, shmid, cmd | __IPC_64, 0, |
40 | buf); |
41 | #endif |
42 | } |
43 | versioned_symbol (libc, __new_shmctl, shmctl, DEFAULT_VERSION); |
44 | |
45 | |
46 | #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2) |
47 | struct __old_shmid_ds |
48 | { |
49 | struct __old_ipc_perm shm_perm; /* operation permission struct */ |
50 | int shm_segsz; /* size of segment in bytes */ |
51 | __time_t shm_atime; /* time of last shmat() */ |
52 | __time_t shm_dtime; /* time of last shmdt() */ |
53 | __time_t shm_ctime; /* time of last change by shmctl() */ |
54 | __ipc_pid_t shm_cpid; /* pid of creator */ |
55 | __ipc_pid_t shm_lpid; /* pid of last shmop */ |
56 | unsigned short int shm_nattch; /* number of current attaches */ |
57 | unsigned short int __shm_npages; /* size of segment (pages) */ |
58 | unsigned long int *__shm_pages; /* array of ptrs to frames -> SHMMAX */ |
59 | struct vm_area_struct *__attaches; /* descriptors for attaches */ |
60 | }; |
61 | |
62 | int |
63 | attribute_compat_text_section |
64 | __old_shmctl (int shmid, int cmd, struct __old_shmid_ds *buf) |
65 | { |
66 | #ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS |
67 | return INLINE_SYSCALL_CALL (shmctl, shmid, cmd, buf); |
68 | #else |
69 | return INLINE_SYSCALL_CALL (ipc, IPCOP_shmctl, shmid, cmd, 0, buf); |
70 | #endif |
71 | } |
72 | compat_symbol (libc, __old_shmctl, shmctl, GLIBC_2_0); |
73 | #endif |
74 | |