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#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 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 */