/* * Copyright (c) 1988 University of Utah. * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department. * * Redistribution is only permitted until one year after the first shipment * of 4.4BSD by the Regents. Otherwise, redistribution and use in source and * binary forms are permitted provided that: (1) source distributions retain * this entire copyright notice and comment, and (2) distributions including * binaries display the following acknowledgement: This product includes * software developed by the University of California, Berkeley and its * contributors'' in the documentation or other materials provided with the * distribution and in all advertising materials mentioning features or use * of this software. Neither the name of the University nor the names of * its contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. * * @(#)ipc.h 7.1 (Berkeley) 5/8/90 */ /* * SVID compatible ipc.h file */ #ifndef _IPC_ #define _IPC_ typedef long key_t; /* XXX should be in types.h */ struct ipc_perm { ushort cuid; /* creator user id */ ushort cgid; /* creator group id */ ushort uid; /* user id */ ushort gid; /* group id */ ushort mode; /* r/w permission */ ushort seq; /* sequence # (to generate unique msg/sem/shm id) */ key_t key; /* user specified msg/sem/shm key */ }; /* common mode bits */ #define IPC_R 00400 /* read permission */ #define IPC_W 00200 /* write/alter permission */ /* SVID required constants (same values as system 5) */ #define IPC_CREAT 01000 /* create entry if key does not exist */ #define IPC_EXCL 02000 /* fail if key exists */ #define IPC_NOWAIT 04000 /* error if request must wait */ #define IPC_PRIVATE (key_t)0 /* private key */ #define IPC_RMID 0 /* remove identifier */ #define IPC_SET 1 /* set options */ #define IPC_STAT 2 /* get options */ #endif /* _IPC_ */