1 /* 2 * Copyright 2008, Haiku Inc. All Rights Reserved. 3 * Distributed under the terms of the MIT License. 4 */ 5 #ifndef _SYS_IPC_H 6 #define _SYS_IPC_H 7 8 9 #include <sys/cdefs.h> 10 #include <sys/types.h> 11 12 13 /* Mode bits for msgget(), semget(), and shmget() */ 14 #define IPC_CREAT 01000 /* create key */ 15 #define IPC_EXCL 02000 /* fail if key exists */ 16 #define IPC_NOWAIT 04000 /* do not block */ 17 18 /* Control commands for msgctl(), semctl(), and shmctl() */ 19 #define IPC_RMID 0 /* remove identifier */ 20 #define IPC_SET 1 /* set options */ 21 #define IPC_STAT 2 /* get options */ 22 23 /* Private key */ 24 #define IPC_PRIVATE (key_t)0 25 26 27 struct ipc_perm { 28 key_t key; /* IPC identifier */ 29 uid_t uid; /* owner's user ID */ 30 gid_t gid; /* owner's group ID */ 31 uid_t cuid; /* creator's user ID */ 32 gid_t cgid; /* creator's group ID */ 33 mode_t mode; /* Read/write permission */ 34 }; 35 36 37 __BEGIN_DECLS 38 39 key_t ftok(const char *path, int id); 40 41 __END_DECLS 42 43 #endif /* _SYS_IPC_H */ 44