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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:
- * - 2 miscellaneous 32-bit values
- */
- struct msqid64_ds {
- struct ipc64_perm msg_perm;
- #if __BITS_PER_LONG == 64
- __kernel_time_t msg_stime; /* last msgsnd time */
- __kernel_time_t msg_rtime; /* last msgrcv time */
- __kernel_time_t msg_ctime; /* last change time */
- #else
- unsigned long msg_stime; /* last msgsnd time */
- unsigned long msg_stime_high;
- unsigned long msg_rtime; /* last msgrcv time */
- unsigned long msg_rtime_high;
- unsigned long msg_ctime; /* last change time */
- unsigned long msg_ctime_high;
- #endif
- unsigned long msg_cbytes; /* current number of bytes on queue */
- unsigned long msg_qnum; /* number of messages in queue */
- unsigned long 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 */
- unsigned long __unused4;
- unsigned long __unused5;
- };
- #endif /* __ASM_GENERIC_MSGBUF_H */
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