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#ifndef __ASM_GENERIC_SEMBUF_H #define __ASM_GENERIC_SEMBUF_H #include <asm/bitsperlong.h> /* * The semid64_ds structure for x86 architecture. * Note extra padding because this structure is passed back and forth * between kernel and user space. * * semid64_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 two 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 semid64_ds { struct ipc64_perm sem_perm; /* permissions .. see ipc.h */ __kernel_time_t sem_otime; /* last semop time */ #if __BITS_PER_LONG != 64 unsigned long __unused1; #endif __kernel_time_t sem_ctime; /* last change time */ #if __BITS_PER_LONG != 64 unsigned long __unused2; #endif unsigned long sem_nsems; /* no. of semaphores in array */ unsigned long __unused3; unsigned long __unused4; }; #endif /* __ASM_GENERIC_SEMBUF_H */