diff options
Diffstat (limited to 'sys/sys/ipc.h')
| -rw-r--r-- | sys/sys/ipc.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/sys/sys/ipc.h b/sys/sys/ipc.h new file mode 100644 index 0000000..d710de2 --- /dev/null +++ b/sys/sys/ipc.h @@ -0,0 +1,95 @@ +/* $OpenBSD: ipc.h,v 1.13 2014/11/15 21:42:50 guenther Exp $ */ +/* $NetBSD: ipc.h,v 1.15 1996/02/09 18:25:12 christos Exp $ */ + +/* + * Copyright (c) 1988 University of Utah. + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * (c) UNIX System Laboratories, Inc. + * All or some portions of this file are derived from material licensed + * to the University of California by American Telephone and Telegraph + * Co. or Unix System Laboratories, Inc. and are reproduced herein with + * the permission of UNIX System Laboratories, Inc. + * + * This code is derived from software contributed to Berkeley by + * the Systems Programming Group of the University of Utah Computer + * Science Department. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)ipc.h 8.3 (Berkeley) 1/21/94 + */ + +/* + * SVID compatible ipc.h file + */ +#ifndef _SYS_IPC_H_ +#define _SYS_IPC_H_ + +#include <sys/types.h> + +struct ipc_perm { + uid_t cuid; /* creator user id */ + gid_t cgid; /* creator group id */ + uid_t uid; /* user id */ + gid_t gid; /* group id */ + mode_t mode; /* r/w permission */ + unsigned short seq; /* sequence # (to generate unique msg/sem/shm id) */ + key_t key; /* user specified msg/sem/shm key */ +}; + +/* common mode bits */ +#define IPC_R 000400 /* read permission */ +#define IPC_W 000200 /* write/alter permission */ +#define IPC_M 010000 /* permission to change control info */ + +/* SVID required constants (same values as system 5) */ +#define IPC_CREAT 001000 /* create entry if key does not exist */ +#define IPC_EXCL 002000 /* fail if key exists */ +#define IPC_NOWAIT 004000 /* 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 */ + +#ifdef _KERNEL +/* Macros to convert between ipc ids and array indices or sequence ids */ +#define IPCID_TO_IX(id) ((id) & 0xffff) +#define IPCID_TO_SEQ(id) (((id) >> 16) & 0xffff) +#define IXSEQ_TO_IPCID(ix,perm) (((perm.seq) << 16) | (ix & 0xffff)) + +struct ucred; + +int ipcperm(struct ucred *, struct ipc_perm *, int); + +#else /* !_KERNEL */ + +__BEGIN_DECLS +key_t ftok(const char *, int); +__END_DECLS +#endif +#endif /* !_SYS_IPC_H_ */ |