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79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sys/shm.h>
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#include <ipc_priv.h>
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#include <sysdep.h>
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#include <string.h>
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#include <sys/syscall.h>
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#include <bits/wordsize.h>
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#include <shlib-compat.h>
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#include <kernel-features.h>
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struct __old_shmid_ds
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{
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struct __old_ipc_perm shm_perm; /* operation permission struct */
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int shm_segsz; /* size of segment in bytes */
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__time_t shm_atime; /* time of last shmat() */
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__time_t shm_dtime; /* time of last shmdt() */
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__time_t shm_ctime; /* time of last change by shmctl() */
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__ipc_pid_t shm_cpid; /* pid of creator */
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__ipc_pid_t shm_lpid; /* pid of last shmop */
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unsigned short int shm_nattch; /* number of current attaches */
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unsigned short int __shm_npages; /* size of segment (pages) */
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unsigned long int *__shm_pages; /* array of ptrs to frames -> SHMMAX */
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struct vm_area_struct *__attaches; /* descriptors for attaches */
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};
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struct __old_shminfo
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{
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int shmmax;
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int shmmin;
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int shmmni;
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int shmseg;
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int shmall;
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};
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/* Provide operations to control over shared memory segments. */
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#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
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int __old_shmctl (int, int, struct __old_shmid_ds *);
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#endif
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int __new_shmctl (int, int, struct shmid_ds *);
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#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
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int
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attribute_compat_text_section
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__old_shmctl (int shmid, int cmd, struct __old_shmid_ds *buf)
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{
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return INLINE_SYSCALL (ipc, 5, IPCOP_shmctl, shmid, cmd, 0, buf);
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}
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compat_symbol (libc, __old_shmctl, shmctl, GLIBC_2_0);
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#endif
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int
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__new_shmctl (int shmid, int cmd, struct shmid_ds *buf)
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{
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return INLINE_SYSCALL (ipc, 5, IPCOP_shmctl, shmid, cmd | __IPC_64, 0,
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buf);
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}
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versioned_symbol (libc, __new_shmctl, shmctl, GLIBC_2_2);
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