1 #ifndef _ASM_X86_SHMBUF_H 2 #define _ASM_X86_SHMBUF_H 3 4 /* 5 * The shmid64_ds structure for x86 architecture. 6 * Note extra padding because this structure is passed back and forth 7 * between kernel and user space. 8 * 9 * Pad space on 32 bit is left for: 10 * - 64-bit time_t to solve y2038 problem 11 * - 2 miscellaneous 32-bit values 12 * 13 * Pad space on 64 bit is left for: 14 * - 2 miscellaneous 64-bit values 15 */ 16 17 struct shmid64_ds { 18 struct ipc64_perm shm_perm; /* operation perms */ 19 size_t shm_segsz; /* size of segment (bytes) */ 20 __kernel_time_t shm_atime; /* last attach time */ 21 #ifdef __i386__ 22 unsigned long __unused1; 23 #endif 24 __kernel_time_t shm_dtime; /* last detach time */ 25 #ifdef __i386__ 26 unsigned long __unused2; 27 #endif 28 __kernel_time_t shm_ctime; /* last change time */ 29 #ifdef __i386__ 30 unsigned long __unused3; 31 #endif 32 __kernel_pid_t shm_cpid; /* pid of creator */ 33 __kernel_pid_t shm_lpid; /* pid of last operator */ 34 unsigned long shm_nattch; /* no. of current attaches */ 35 unsigned long __unused4; 36 unsigned long __unused5; 37 }; 38 39 struct shminfo64 { 40 unsigned long shmmax; 41 unsigned long shmmin; 42 unsigned long shmmni; 43 unsigned long shmseg; 44 unsigned long shmall; 45 unsigned long __unused1; 46 unsigned long __unused2; 47 unsigned long __unused3; 48 unsigned long __unused4; 49 }; 50 51 #endif /* _ASM_X86_SHMBUF_H */ 52