1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _S390_SHMBUF_H 3 #define _S390_SHMBUF_H 4 5 /* 6 * The shmid64_ds structure for S/390 architecture. 7 * Note extra padding because this structure is passed back and forth 8 * between kernel and user space. 9 * 10 * Pad space is left for: 11 * - 64-bit time_t to solve y2038 problem (for !__s390x__) 12 * - 2 miscellaneous 32-bit values 13 */ 14 15 struct shmid64_ds { 16 struct ipc64_perm shm_perm; /* operation perms */ 17 size_t shm_segsz; /* size of segment (bytes) */ 18 __kernel_time_t shm_atime; /* last attach time */ 19 #ifndef __s390x__ 20 unsigned long __unused1; 21 #endif /* ! __s390x__ */ 22 __kernel_time_t shm_dtime; /* last detach time */ 23 #ifndef __s390x__ 24 unsigned long __unused2; 25 #endif /* ! __s390x__ */ 26 __kernel_time_t shm_ctime; /* last change time */ 27 #ifndef __s390x__ 28 unsigned long __unused3; 29 #endif /* ! __s390x__ */ 30 __kernel_pid_t shm_cpid; /* pid of creator */ 31 __kernel_pid_t shm_lpid; /* pid of last operator */ 32 unsigned long shm_nattch; /* no. of current attaches */ 33 unsigned long __unused4; 34 unsigned long __unused5; 35 }; 36 37 struct shminfo64 { 38 unsigned long shmmax; 39 unsigned long shmmin; 40 unsigned long shmmni; 41 unsigned long shmseg; 42 unsigned long shmall; 43 unsigned long __unused1; 44 unsigned long __unused2; 45 unsigned long __unused3; 46 unsigned long __unused4; 47 }; 48 49 #endif /* _S390_SHMBUF_H */ 50