usr.sbin/sysvipcd/limits.h

   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