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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/msg.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_msgctl(int msqid, int cmd, struct msqid_ds *buf);
libc_hidden_proto (__syscall_msgctl)
int
__new_msgctl(int msqid, int cmd, struct msqid_ds *buf)
{
return INLINE_SYSCALL (msgctl, 3, msqid, cmd, buf);
}
versioned_symbol (libc, __new_msgctl, msgctl, GLIBC_2_18);
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_18)
struct msqid_ds_old
{
struct ipc_perm_old msg_perm; /* structure describing operation permission */
void *__msg_first;
void *__msg_last;
msglen_t __msg_cbytes; /* current number of bytes on queue */
msgqnum_t msg_qnum; /* number of messages currently on queue */
msglen_t msg_qbytes; /* max number of bytes allowed on queue */
__pid_t msg_lspid; /* pid of last msgsnd() */
__pid_t msg_lrpid; /* pid of last msgrcv() */
__time_t msg_stime; /* time of last msgsnd command */
long __unused1;
__time_t msg_rtime; /* time of last msgrcv command */
long __unused2;
__time_t msg_ctime; /* time of last change */
long __unused3;
long __unused4[4];
};
int
attribute_compat_text_section
__old_msgctl(int msqid, int cmd, struct msqid_ds_old *buf)
{
struct msqid_ds newbuf;
int rv;
if (cmd == IPC_SET)
{
ipc_perm_old2new(&(buf->msg_perm), &(newbuf.msg_perm));
newbuf.__msg_first = buf->__msg_first;
newbuf.__msg_last = buf->__msg_first;
newbuf.__msg_cbytes = buf->__msg_cbytes;
newbuf.msg_qnum = buf->msg_qnum;
newbuf.msg_qbytes = buf->msg_qbytes;
newbuf.msg_lspid = buf->msg_lspid;
newbuf.msg_lrpid = buf->msg_lrpid;
newbuf.msg_stime = buf->msg_stime;
newbuf.msg_rtime = buf->msg_rtime;
newbuf.msg_ctime = buf->msg_ctime;
}
rv = __new_msgctl (msqid, cmd, &newbuf);
if ((rv != -1) && (cmd == IPC_STAT))
{
ipc_perm_new2old(&(newbuf.msg_perm), &(buf->msg_perm));
buf->__msg_first = newbuf.__msg_first;
buf->__msg_last = newbuf.__msg_first;
buf->__msg_cbytes = newbuf.__msg_cbytes;
buf->msg_qnum = newbuf.msg_qnum;
buf->msg_qbytes = newbuf.msg_qbytes;
buf->msg_lspid = newbuf.msg_lspid;
buf->msg_lrpid = newbuf.msg_lrpid;
buf->msg_stime = newbuf.msg_stime;
buf->msg_rtime = newbuf.msg_rtime;
buf->msg_ctime = newbuf.msg_ctime;
}
return rv;
}
compat_symbol (libc, __old_msgctl, msgctl, GLIBC_2_0);
#endif
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