headers/posix/sys/ipc.h

   1 /*
   2  * Copyright 2008-2012 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 */