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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef __ASM_GENERIC_MSGBUF_H
#define __ASM_GENERIC_MSGBUF_H
#include <asm/bitsperlong.h>
/*
* generic msqid64_ds structure.
*
* Note extra padding because this structure is passed back and forth
* between kernel and user space.
*
* msqid64_ds was originally meant to be architecture specific, but
* everyone just ended up making identical copies without specific
* optimizations, so we may just as well all use the same one.
*
* 64 bit architectures typically define a 64 bit __kernel_time_t,
* so they do not need the first three padding words.
* On big-endian systems, the padding is in the wrong place.
*
* Pad space is left for:
* - 64-bit time_t to solve y2038 problem
* - 2 miscellaneous 32-bit values
*/
struct msqid64_ds {
struct ipc64_perm msg_perm;
__kernel_time_t msg_stime; /* last msgsnd time */
#if __BITS_PER_LONG != 64
unsigned long __unused1;
#endif
__kernel_time_t msg_rtime; /* last msgrcv time */
#if __BITS_PER_LONG != 64
unsigned long __unused2;
#endif
__kernel_time_t msg_ctime; /* last change time */
#if __BITS_PER_LONG != 64
unsigned long __unused3;
#endif
__kernel_ulong_t msg_cbytes; /* current number of bytes on queue */
__kernel_ulong_t msg_qnum; /* number of messages in queue */
__kernel_ulong_t msg_qbytes; /* max number of bytes on queue */
__kernel_pid_t msg_lspid; /* pid of last msgsnd */
__kernel_pid_t msg_lrpid; /* last receive pid */
__kernel_ulong_t __unused4;
__kernel_ulong_t __unused5;
};
#endif /* __ASM_GENERIC_MSGBUF_H */
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