/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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#ifndef __ASM_GENERIC_MSGBUF_H

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#define __ASM_GENERIC_MSGBUF_H

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#include <asm/bitsperlong.h>

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/*

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* generic msqid64_ds structure.

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*

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* Note extra padding because this structure is passed back and forth

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* between kernel and user space.

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*

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* msqid64_ds was originally meant to be architecture specific, but

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* everyone just ended up making identical copies without specific

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* optimizations, so we may just as well all use the same one.

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*

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* 64 bit architectures typically define a 64 bit __kernel_time_t,

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* so they do not need the first three padding words.

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* On big-endian systems, the padding is in the wrong place.

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*

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* Pad space is left for:

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* - 2 miscellaneous 32-bit values

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*/

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struct msqid64_ds {

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struct ipc64_perm msg_perm;

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#if __BITS_PER_LONG == 64

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__kernel_time_t msg_stime; /* last msgsnd time */

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__kernel_time_t msg_rtime; /* last msgrcv time */

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__kernel_time_t msg_ctime; /* last change time */

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#else

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unsigned long msg_stime; /* last msgsnd time */

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unsigned long msg_stime_high;

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unsigned long msg_rtime; /* last msgrcv time */

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unsigned long msg_rtime_high;

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unsigned long msg_ctime; /* last change time */

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unsigned long msg_ctime_high;

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#endif

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unsigned long msg_cbytes; /* current number of bytes on queue */

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unsigned long msg_qnum; /* number of messages in queue */

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unsigned long msg_qbytes; /* max number of bytes on queue */

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__kernel_pid_t msg_lspid; /* pid of last msgsnd */

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__kernel_pid_t msg_lrpid; /* last receive pid */

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unsigned long __unused4;

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unsigned long __unused5;

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};

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#endif /* __ASM_GENERIC_MSGBUF_H */

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