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- /* Copyright (c) 1984, 1986, 1987, 1988 AT&T */
- /* All Rights Reserved */
-
- /* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
- /* The copyright notice above does not evidence any */
- /* actual or intended publication of such source code. */
-
-
- #ident "@(#)head.sys:ipc.h 1.3"
-
- /* Common IPC Access Structure */
- struct ipc_perm {
- ushort uid; /* owner's user id */
- ushort gid; /* owner's group id */
- ushort cuid; /* creator's user id */
- ushort cgid; /* creator's group id */
- ushort mode; /* access modes */
- ushort seq; /* slot usage sequence number */
- key_t key; /* key */
- };
-
- /* Common IPC Definitions. */
- /* Mode bits. */
- #define IPC_ALLOC 0100000 /* entry currently allocated */
- #define IPC_CREAT 0001000 /* create entry if key doesn't exist */
- #define IPC_EXCL 0002000 /* fail if key exists */
- #define IPC_NOWAIT 0004000 /* error if request must wait */
-
- /* Keys. */
- #define IPC_PRIVATE (key_t)0 /* private key */
-
- /* Control Commands. */
- #define IPC_RMID 0 /* remove identifier */
- #define IPC_SET 1 /* set options */
- #define IPC_STAT 2 /* get options */
-