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/* Copyright (C) 2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <sys/shm.h>
#include <ipc_priv.h>
#include <sysdep.h>
#include <string.h>
#include <sys/syscall.h>
#include <bits/wordsize.h>
#include <shlib-compat.h>
#include <kernel-features.h>
/* Provide operations to control over shared memory segments. */
extern int __syscall_shmctl (int shmid, int cmd, struct shmid_ds *buf);
libc_hidden_proto (__syscall_shmctl)
int
__new_shmctl (int shmid, int cmd, struct shmid_ds *buf)
{
return INLINE_SYSCALL (shmctl, 3, shmid, cmd, buf);
}
versioned_symbol (libc, __new_shmctl, shmctl, GLIBC_2_18);
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_18)
struct shmid_ds_old {
struct ipc_perm_old shm_perm; /* operation permission structure */
int shm_segsz; /* size of segment in bytes */
pid_t shm_lpid; /* process ID of last shared memory op */
pid_t shm_cpid; /* process ID of creator */
unsigned short shm_nattch; /* number of current attaches */
time_t shm_atime; /* time of last shmat() */
time_t shm_dtime; /* time of last shmdt() */
time_t shm_ctime; /* time of last change by shmctl() */
void *shm_internal; /* sysv stupidity */
};
int
attribute_compat_text_section
__old_shmctl (int shmid, int cmd, struct shmid_ds_old *buf)
{
struct shmid_ds newbuf;
int rv;
if (cmd == IPC_SET)
{
ipc_perm_old2new(&(buf->shm_perm), &(newbuf.shm_perm));
newbuf.shm_segsz = buf->shm_segsz;
newbuf.shm_lpid = buf->shm_lpid;
newbuf.shm_cpid = buf->shm_cpid;
newbuf.shm_nattch= buf->shm_nattch;
newbuf.shm_atime = buf->shm_atime;
newbuf.shm_dtime = buf->shm_dtime;
newbuf.shm_ctime = buf->shm_ctime;
}
rv = __new_shmctl (shmid, cmd, &newbuf);
if ((rv != -1) && (cmd == IPC_STAT))
{
ipc_perm_new2old(&(newbuf.shm_perm), &(buf->shm_perm));
buf->shm_segsz = newbuf.shm_segsz;
buf->shm_lpid = newbuf.shm_lpid;
buf->shm_cpid = newbuf.shm_cpid;
buf->shm_nattch= newbuf.shm_nattch;
buf->shm_atime = newbuf.shm_atime;
buf->shm_dtime = newbuf.shm_dtime;
buf->shm_ctime = newbuf.shm_ctime;
}
return rv;
}
compat_symbol (libc, __old_shmctl, shmctl, GLIBC_2_0);
#endif
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