libc/sysdeps/linux/sparc/bits/ipc.h

   1 /* Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc.
   2
   3    The GNU C Library is free software; you can redistribute it and/or
   4    modify it under the terms of the GNU Lesser General Public
   5    License as published by the Free Software Foundation; either
   6    version 2.1 of the License, or (at your option) any later version.
   7
   8    The GNU C Library is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11    Lesser General Public License for more details.
  12
  13    You should have received a copy of the GNU Lesser General Public
  14    License along with the GNU C Library; if not, see
  15    <http://www.gnu.org/licenses/>.  */
  16
  17 #ifndef _SYS_IPC_H
  18 # error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
  19 #endif
  20
  21 #include <bits/types.h>
  22
  23 /* Mode bits for `msgget', `semget', and `shmget'.  */
  24 #define IPC_CREAT       01000           /* Create key if key does not exist. */
  25 #define IPC_EXCL        02000           /* Fail if key exists.  */
  26 #define IPC_NOWAIT      04000           /* Return error on wait.  */
  27
  28 /* Control commands for `msgctl', `semctl', and `shmctl'.  */
  29 #define IPC_RMID        0               /* Remove identifier.  */
  30 #define IPC_SET         1               /* Set `ipc_perm' options.  */
  31 #define IPC_STAT        2               /* Get `ipc_perm' options.  */
  32 #ifdef __USE_GNU
  33 # define IPC_INFO       3               /* See ipcs.  */
  34 #endif
  35
  36 /* Special key values.  */
  37 #define IPC_PRIVATE     ((__key_t) 0)   /* Private key.  */
  38
  39
  40 /* Data structure used to pass permission information to IPC operations.  */
  41 struct ipc_perm
  42   {
  43     __key_t __key;                      /* Key.  */
  44     __uid_t uid;                        /* Owner's user ID.  */
  45     __gid_t gid;                        /* Owner's group ID.  */
  46     __uid_t cuid;                       /* Creator's user ID.  */
  47     __gid_t cgid;                       /* Creator's group ID.  */
  48     unsigned short int __pad1;
  49     unsigned short int mode;            /* Read/write permission.  */
  50     unsigned short int __pad2;
  51     unsigned short int __seq;           /* Sequence number.  */
  52     unsigned long long int __unused1;
  53     unsigned long long int __unused2;
  54   };