sysdeps/unix/sysv/linux/ia64/bits/ipc.h

   1 /* Copyright (C) 2000 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3         Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #ifndef _SYS_IPC_H
  21 # error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
  22 #endif
  23
  24 #include <sys/types.h>
  25
  26 /* Mode bits for `msgget', `semget', and `shmget'.  */
  27 #define IPC_CREAT       01000           /* Create key if key does not exist. */
  28 #define IPC_EXCL        02000           /* Fail if key exists.  */
  29 #define IPC_NOWAIT      04000           /* Return error on wait.  */
  30
  31 /* Control commands for `msgctl', `semctl', and `shmctl'.  */
  32 #define IPC_RMID        0               /* Remove identifier.  */
  33 #define IPC_SET         1               /* Set `ipc_perm' options.  */
  34 #define IPC_STAT        2               /* Get `ipc_perm' options.  */
  35 #define IPC_INFO        3               /* See ipcs.  */
  36
  37 /* Special key values.  */
  38 #define IPC_PRIVATE     ((__key_t) 0)   /* Private key.  */
  39
  40
  41 /* Data structure used to pass permission information to IPC operations.  */
  42 struct ipc_perm
  43   {
  44     __key_t __key;                      /* Key.  */
  45     __uid_t uid;                        /* Owner's user ID.  */
  46     __gid_t gid;                        /* Owner's group ID.  */
  47     __uid_t cuid;                       /* Creator's user ID.  */
  48     __gid_t cgid;                       /* Creator's group ID.  */
  49     __mode_t mode;                      /* Read/write permission.  */
  50     unsigned short int __seq;           /* Sequence number.  */
  51     unsigned short int __pad1;
  52     unsigned long int __unused1;
  53     unsigned long int __unused2;
  54   };