1 #ifndef __ASM_GENERIC_SEMBUF_H
2 #define __ASM_GENERIC_SEMBUF_H
4 #include <asm/bitsperlong.h>
7 * The semid64_ds structure for x86 architecture.
8 * Note extra padding because this structure is passed back and forth
9 * between kernel and user space.
11 * semid64_ds was originally meant to be architecture specific, but
12 * everyone just ended up making identical copies without specific
13 * optimizations, so we may just as well all use the same one.
15 * 64 bit architectures typically define a 64 bit __kernel_time_t,
16 * so they do not need the first two padding words.
17 * On big-endian systems, the padding is in the wrong place.
19 * Pad space is left for:
20 * - 64-bit time_t to solve y2038 problem
21 * - 2 miscellaneous 32-bit values
24 struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
25 __kernel_time_t sem_otime; /* last semop time */
26 #if __BITS_PER_LONG != 64
27 unsigned long __unused1;
29 __kernel_time_t sem_ctime; /* last change time */
30 #if __BITS_PER_LONG != 64
31 unsigned long __unused2;
33 unsigned long sem_nsems; /* no. of semaphores in array */
34 unsigned long __unused3;
35 unsigned long __unused4;
38 #endif /* __ASM_GENERIC_SEMBUF_H */