xref: /dragonfly/usr.sbin/sysvipcd/limits.h (revision 335b9e93)
1 /*
2  * Copyright (c) 1994 Adam Glass and Charles Hannum.  All rights reserved.
3  * Copyright (c) 2013 Larisa Grigore <larisagrigore@gmail.com>.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *	This product includes software developed by Adam Glass and Charles
16  *	Hannum.
17  * 4. The names of the authors may not be used to endorse or promote products
18  *    derived from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #ifndef SYSVD_LIMITS_H
33 #define SYSVD_LIMITS_H
34 
35 /*
36  * Tuneable values
37  */
38 #ifndef SHMMIN
39 #define	SHMMIN	1
40 #endif
41 #ifndef SHMMNI
42 #define	SHMMNI	512 * 4 /* 512 for each type of sysv resource plus the
43 			   segments used for UNDO operations (sysv sems).
44 			   */
45 #endif
46 #ifndef SHMSEG
47 #define	SHMSEG	1024
48 #endif
49 
50 struct shminfo {
51 //	long	shmmax,		/* max shared memory segment size (bytes) */
52 	long	shmmin,		/* min shared memory segment size (bytes) */
53 		shmmni,		/* max number of shared memory identifiers */
54 		shmseg;		/* max shared memory segments per process */
55 //		shmall;		/* max amount of shared memory (pages) */
56 };
57 
58 #endif
59