1/* Copyright (C) 1995-2019 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. */
33int
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}
43versioned_symbol (libc, __new_shmctl, shmctl, DEFAULT_VERSION);
44
45
46#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
47struct __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
62int
63attribute_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}
72compat_symbol (libc, __old_shmctl, shmctl, GLIBC_2_0);
73#endif
74