1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 2#ifndef __ASM_GENERIC_MSGBUF_H
 3#define __ASM_GENERIC_MSGBUF_H
 4
 5#include <asm/bitsperlong.h>
 
 
 6/*
 7 * generic msqid64_ds structure.
 8 *
 9 * Note extra padding because this structure is passed back and forth
10 * between kernel and user space.
11 *
12 * msqid64_ds was originally meant to be architecture specific, but
13 * everyone just ended up making identical copies without specific
14 * optimizations, so we may just as well all use the same one.
15 *
16 * 64 bit architectures typically define a 64 bit __kernel_time_t,
17 * so they do not need the first three padding words.
18 * On big-endian systems, the padding is in the wrong place.
19 *
20 * Pad space is left for:
21 * - 64-bit time_t to solve y2038 problem
22 * - 2 miscellaneous 32-bit values
23 */
24
25struct msqid64_ds {
26	struct ipc64_perm msg_perm;
27	__kernel_time_t msg_stime;	/* last msgsnd time */
28#if __BITS_PER_LONG != 64
29	unsigned long	__unused1;
30#endif
31	__kernel_time_t msg_rtime;	/* last msgrcv time */
32#if __BITS_PER_LONG != 64
33	unsigned long	__unused2;
34#endif
35	__kernel_time_t msg_ctime;	/* last change time */
36#if __BITS_PER_LONG != 64
37	unsigned long	__unused3;
38#endif
39	__kernel_ulong_t msg_cbytes;	/* current number of bytes on queue */
40	__kernel_ulong_t msg_qnum;	/* number of messages in queue */
41	__kernel_ulong_t msg_qbytes;	/* max number of bytes on queue */
42	__kernel_pid_t msg_lspid;	/* pid of last msgsnd */
43	__kernel_pid_t msg_lrpid;	/* last receive pid */
44	__kernel_ulong_t __unused4;
45	__kernel_ulong_t __unused5;
46};
47
48#endif /* __ASM_GENERIC_MSGBUF_H */

 1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 2#ifndef __ASM_GENERIC_MSGBUF_H
 3#define __ASM_GENERIC_MSGBUF_H
 4
 5#include <asm/bitsperlong.h>
 6#include <asm/ipcbuf.h>
 7
 8/*
 9 * generic msqid64_ds structure.
10 *
11 * Note extra padding because this structure is passed back and forth
12 * between kernel and user space.
13 *
14 * msqid64_ds was originally meant to be architecture specific, but
15 * everyone just ended up making identical copies without specific
16 * optimizations, so we may just as well all use the same one.
17 *
18 * 64 bit architectures use a 64-bit long time field here, while
19 * 32 bit architectures have a pair of unsigned long values.
20 * On big-endian systems, the lower half is in the wrong place.
21 *
22 * Pad space is left for:
 
23 * - 2 miscellaneous 32-bit values
24 */
25
26struct msqid64_ds {
27	struct ipc64_perm msg_perm;
28#if __BITS_PER_LONG == 64
29	long		 msg_stime;	/* last msgsnd time */
30	long		 msg_rtime;	/* last msgrcv time */
31	long		 msg_ctime;	/* last change time */
32#else
33	unsigned long	msg_stime;	/* last msgsnd time */
34	unsigned long	msg_stime_high;
35	unsigned long	msg_rtime;	/* last msgrcv time */
36	unsigned long	msg_rtime_high;
37	unsigned long	msg_ctime;	/* last change time */
38	unsigned long	msg_ctime_high;
39#endif
40	unsigned long	msg_cbytes;	/* current number of bytes on queue */
41	unsigned long	msg_qnum;	/* number of messages in queue */
42	unsigned long	 msg_qbytes;	/* max number of bytes on queue */
43	__kernel_pid_t msg_lspid;	/* pid of last msgsnd */
44	__kernel_pid_t msg_lrpid;	/* last receive pid */
45	unsigned long	 __unused4;
46	unsigned long	 __unused5;
47};
48
49#endif /* __ASM_GENERIC_MSGBUF_H */