[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / i386 / msgctl.c

/* Copyright (C) 1995-2014 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 <errno.h>
#include <sys/msg.h>
#include <ipc_priv.h>

#include <sysdep.h>
#include <string.h>
#include <sys/syscall.h>

#include <shlib-compat.h>

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() */
};

/* Allows to control internal state and destruction of message queue
   objects.  */
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
int __old_msgctl (int, int, struct __old_msqid_ds *);
#endif
int __new_msgctl (int, int, struct msqid_ds *);

#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
int
attribute_compat_text_section
__old_msgctl (int msqid, int cmd, struct __old_msqid_ds *buf)
{
  return INLINE_SYSCALL (ipc, 5, IPCOP_msgctl, msqid, cmd, 0, buf);
}
compat_symbol (libc, __old_msgctl, msgctl, GLIBC_2_0);
#endif

int
__new_msgctl (int msqid, int cmd, struct msqid_ds *buf)
{
  return INLINE_SYSCALL (ipc, 5, IPCOP_msgctl,
			 msqid, cmd | __IPC_64, 0, buf);
}

versioned_symbol (libc, __new_msgctl, msgctl, GLIBC_2_2);
Commit	Line	Data
d4697bc9	1	/* Copyright (C) 1995-2014 Free Software Foundation, Inc.
cd090f71 UD	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
41bdb6e2 AJ	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.
cd090f71 UD	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
41bdb6e2	13	Lesser General Public License for more details.
cd090f71	14
41bdb6e2	15	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	16	License along with the GNU C Library; if not, see
59ba27a6 PE	17	<http://www.gnu.org/licenses/>. */
cd090f71 UD	18
	19	#include <errno.h>
	20	#include <sys/msg.h>
	21	#include <ipc_priv.h>
	22
	23	#include <sysdep.h>
	24	#include <string.h>
	25	#include <sys/syscall.h>
	26
b5567b2a	27	#include <shlib-compat.h>
cd090f71 UD	28
	29	struct __old_msqid_ds
	30	{
	31	struct __old_ipc_perm msg_perm; /* structure describing operation permission */
70d9946a JM	32	struct msg __msg_first; / pointer to first message on queue */
70d9946a JM	33	struct msg __msg_last; / pointer to last message on queue */
cd090f71 UD	34	__time_t msg_stime; /* time of last msgsnd command */
	35	__time_t msg_rtime; /* time of last msgrcv command */
	36	__time_t msg_ctime; /* time of last change */
70d9946a JM	37	struct wait_queue __wwait; / ??? */
70d9946a JM	38	struct wait_queue __rwait; / ??? */
cd090f71 UD	39	unsigned short int __msg_cbytes; /* current number of bytes on queue */
	40	unsigned short int msg_qnum; /* number of messages currently on queue */
	41	unsigned short int msg_qbytes; /* max number of bytes allowed on queue */
	42	__ipc_pid_t msg_lspid; /* pid of last msgsnd() */
	43	__ipc_pid_t msg_lrpid; /* pid of last msgrcv() */
	44	};
	45
	46	/* Allows to control internal state and destruction of message queue
	47	objects. */
b5567b2a	48	#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
cd090f71	49	int __old_msgctl (int, int, struct __old_msqid_ds *);
b5567b2a	50	#endif
cd090f71 UD	51	int __new_msgctl (int, int, struct msqid_ds *);
cd090f71 UD	52
b5567b2a	53	#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
cd090f71	54	int
4a381a81	55	attribute_compat_text_section
cd090f71 UD	56	__old_msgctl (int msqid, int cmd, struct __old_msqid_ds *buf)
cd090f71 UD	57	{
f3aae3f3	58	return INLINE_SYSCALL (ipc, 5, IPCOP_msgctl, msqid, cmd, 0, buf);
cd090f71	59	}
b5567b2a UD	60	compat_symbol (libc, __old_msgctl, msgctl, GLIBC_2_0);
b5567b2a UD	61	#endif
cd090f71 UD	62
	63	int
	64	__new_msgctl (int msqid, int cmd, struct msqid_ds *buf)
	65	{
d25c879d	66	return INLINE_SYSCALL (ipc, 5, IPCOP_msgctl,
f3aae3f3	67	msqid, cmd \| __IPC_64, 0, buf);
cd090f71 UD	68	}
cd090f71 UD	69
b5567b2a	70	versioned_symbol (libc, __new_msgctl, msgctl, GLIBC_2_2);