msgbuf.h

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#ifndef _SPARC_MSGBUF_H
#define _SPARC_MSGBUF_H

/*
 * The msqid64_ds structure for sparc64 architecture.
 * Note extra padding because this structure is passed back and forth
 * between kernel and user space.
 *
 * Pad space is left for:
 * - 64-bit time_t to solve y2038 problem
 * - 2 miscellaneous 32-bit values
 */

#if defined(__sparc__) && defined(__arch64__)
# define PADDING(x)
#else
# define PADDING(x) unsigned int x;
#endif


struct msqid64_ds {
    struct ipc64_perm msg_perm;
    PADDING(__pad1)
    __kernel_time_t msg_stime;  /* last msgsnd time */
    PADDING(__pad2)
    __kernel_time_t msg_rtime;  /* last msgrcv time */
    PADDING(__pad3)
    __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  __unused1;
    unsigned long  __unused2;
};
#undef PADDING
#endif /* _SPARC_MSGBUF_H */