linux/include/asm-x86_64/msgbuf.h

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#ifndef _X8664_MSGBUF_H
#define _X8664_MSGBUF_H
/*
* The msqid64_ds structure for x86-64 architecture.
* Note extra padding because this structure is passed back and forth
* between kernel and user space.
*
* Pad space is left for:
* - 2 miscellaneous 64-bit values
*/
struct msqid64_ds {
struct ipc64_perm msg_perm;
__kernel_time_t msg_stime; /* last msgsnd time */
__kernel_time_t msg_rtime; /* last msgrcv time */
__kernel_time_t msg_ctime; /* last change time */
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