contrib/sendmail-8.14/include/sm/shm.h

   1 /*
   2  * Copyright (c) 2000-2003, 2005 Sendmail, Inc. and its suppliers.
   3  *      All rights reserved.
   4  *
   5  * By using this file, you agree to the terms and conditions set
   6  * forth in the LICENSE file which can be found at the top level of
   7  * the sendmail distribution.
   8  *
   9  *      $Id: shm.h,v 1.11 2005/01/13 22:57:04 ca Exp $
  10  */
  11
  12 #ifndef SM_SHM_H
  13 # define SM_SHM_H
  14
  15 # if SM_CONF_SHM
  16 #  include <sys/types.h>
  17 #  include <sys/ipc.h>
  18 #  include <sys/shm.h>
  19
  20 /* # include "def.h"    */
  21
  22 /* key for shared memory */
  23 #  define SM_SHM_KEY    ((key_t) 42)
  24
  25 /* return value for failed shmget() */
  26 #  define SM_SHM_NULL   ((void *) -1)
  27 #  define SM_SHM_NO_ID  (-2)
  28
  29 extern void *sm_shmstart __P((key_t, int , int , int *, bool));
  30 extern int sm_shmstop __P((void *, int, bool));
  31 extern int sm_shmsetowner __P((int, uid_t, gid_t, mode_t));
  32
  33
  34 /* for those braindead systems... (e.g., SunOS 4) */
  35 #  ifndef SHM_R
  36 #   define SHM_R       0400
  37 #  endif /* SHM_R */
  38 #  ifndef SHM_W
  39 #   define SHM_W       0200
  40 #  endif /* SHM_W */
  41
  42 # endif /* SM_CONF_SHM */
  43 #endif /* ! SM_SHM_H */