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update from 4.4-Lite, keep IPCID macros

This commit is contained in:
cgd 1994-05-21 04:13:59 +00:00
parent d6a47464e4
commit 43004e9c9f
1 changed files with 15 additions and 16 deletions
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31
sys/sys/ipc.h
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@ -1,7 +1,7 @@
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
* 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
@ -40,26 +40,25 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)ipc.h 7.2 (Berkeley) 2/5/91
* $Id: ipc.h,v 1.6 1994/05/17 04:25:04 cgd Exp $
* from: @(#)ipc.h 8.3 (Berkeley) 1/21/94
* $Id: ipc.h,v 1.7 1994/05/21 04:13:59 cgd Exp $
*/
#ifndef _SYS_IPC_H_
#define _SYS_IPC_H_
/*
* SVID compatible ipc.h file
*/
#ifndef _SYS_IPC_H_
#define _SYS_IPC_H_
typedef long key_t; /* XXX should be in types.h */
struct ipc_perm {
u_short cuid; /* creator user id */
u_short cgid; /* creator group id */
u_short uid; /* user id */
u_short gid; /* group id */
u_short mode; /* r/w permission */
u_short seq; /* sequence # (to generate unique msg/sem/shm id) */
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 */
};
@ -80,9 +79,9 @@ struct ipc_perm {
#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))
#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))
#endif /* KERNEL */
#endif /* !_SYS_IPC_H_ */