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Diffstat (limited to 'REORG.TODO/bits/ipc.h')
-rw-r--r-- | REORG.TODO/bits/ipc.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/REORG.TODO/bits/ipc.h b/REORG.TODO/bits/ipc.h new file mode 100644 index 0000000000..cafbe0f3a2 --- /dev/null +++ b/REORG.TODO/bits/ipc.h @@ -0,0 +1,46 @@ +/* Copyright (C) 1995-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _SYS_IPC_H +# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead." +#endif + +#include <bits/types.h> + +/* Mode bits for `msgget', `semget', and `shmget'. */ +#define IPC_CREAT 01000 /* create key if key does not exist */ +#define IPC_EXCL 02000 /* fail if key exists */ +#define IPC_NOWAIT 04000 /* return error on wait */ + +/* Control commands for `msgctl', `semctl', and `shmctl'. */ +#define IPC_RMID 0 /* remove identifier */ +#define IPC_SET 1 /* set `ipc_perm' options */ +#define IPC_STAT 2 /* get `ipc_perm' options */ + +/* Special key values. */ +#define IPC_PRIVATE ((key_t) 0) /* private key */ + + +/* Data structure used to pass permission information to IPC operations. */ +struct ipc_perm + { + __uid_t uid; /* owner's user ID */ + __gid_t gid; /* owner's group ID */ + __uid_t cuid; /* creator's user ID */ + __gid_t cgid; /* creator's group ID */ + __mode_t mode; /* read/write permission */ + }; |