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/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
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 <sys/msg.h>
#include <ipc_priv.h>
#include <sysdep.h>
#include <shlib-compat.h>
#include <errno.h>
#ifndef DEFAULT_VERSION
# define DEFAULT_VERSION GLIBC_2_2
#endif
int
__new_msgctl (int msqid, int cmd, struct msqid_ds *buf)
{
#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
return INLINE_SYSCALL_CALL (msgctl, msqid, cmd | __IPC_64, buf);
#else
return INLINE_SYSCALL_CALL (ipc, IPCOP_msgctl, msqid, cmd | __IPC_64, 0,
buf);
#endif
}
versioned_symbol (libc, __new_msgctl, msgctl, DEFAULT_VERSION);
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
struct __old_msqid_ds
{
struct __old_ipc_perm msg_perm; /* structure describing operation permission */
struct msg *__msg_first; /* pointer to first message on queue */
struct msg *__msg_last; /* pointer to last message on queue */
__time_t msg_stime; /* time of last msgsnd command */
__time_t msg_rtime; /* time of last msgrcv command */
__time_t msg_ctime; /* time of last change */
struct wait_queue *__wwait; /* ??? */
struct wait_queue *__rwait; /* ??? */
unsigned short int __msg_cbytes; /* current number of bytes on queue */
unsigned short int msg_qnum; /* number of messages currently on queue */
unsigned short int msg_qbytes; /* max number of bytes allowed on queue */
__ipc_pid_t msg_lspid; /* pid of last msgsnd() */
__ipc_pid_t msg_lrpid; /* pid of last msgrcv() */
};
int
attribute_compat_text_section
__old_msgctl (int msqid, int cmd, struct __old_msqid_ds *buf)
{
#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
return INLINE_SYSCALL_CALL (msgctl, msqid, cmd | __IPC_64, buf);
#else
return INLINE_SYSCALL_CALL (ipc, IPCOP_msgctl, msqid, cmd, 0, buf);
#endif
}
compat_symbol (libc, __old_msgctl, msgctl, GLIBC_2_0);
#endif
/* 64-bit time version */
struct __msqid_ds64
{
struct ipc_perm msg_perm; /* structure describing operation permission */
__time64_t msg_stime; /* time of last msgsnd command */
__time64_t msg_rtime; /* time of last msgrcv command */
__time64_t msg_ctime; /* time of last change */
unsigned long int __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() */
unsigned long int __glibc_reserved4;
unsigned long int __glibc_reserved5;
};
int
__msgctl64 (int msqid, int cmd, struct __msqid_ds64 *buf)
{
int result;
struct msqid_ds buf32, *pbuf32 = NULL;
if (cmd == IPC_SET && buf != NULL)
{
buf32.msg_qbytes = buf->msg_qbytes;
buf32.msg_perm.uid = buf->msg_perm.uid;
buf32.msg_perm.gid = buf->msg_perm.gid;
buf32.msg_perm.mode = buf->msg_perm.mode;
}
if (cmd == IPC_SET || cmd == IPC_STAT)
pbuf32 = &buf32;
#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
result = INLINE_SYSCALL_CALL (msgctl, msqid, cmd | __IPC_64, pbuf32);
#else
result = INLINE_SYSCALL_CALL (ipc, IPCOP_msgctl, msqid, cmd | __IPC_64,
0, pbuf32);
#endif
if (cmd == IPC_STAT && result == 0 && buf != NULL)
{
buf->msg_perm = buf32.msg_perm;
buf->msg_stime = buf32.msg_stime;
buf->msg_rtime = buf32.msg_rtime;
buf->msg_ctime = buf32.msg_ctime;
buf->__msg_cbytes = buf32.__msg_cbytes;
buf->msg_qnum = buf32.msg_qnum;
buf->msg_qbytes = buf32.msg_qbytes;
buf->msg_lspid = buf32.msg_lspid;
buf->msg_lrpid = buf32.msg_lrpid;
}
return result;
}
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