external/gpl2/lvm2/dist/include/lvm-wrappers.h

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
   5  * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
   6  *
   7  * This file is part of LVM2.
   8  *
   9  * This copyrighted material is made available to anyone wishing to use,
  10  * modify, copy, or redistribute it subject to the terms and conditions
  11  * of the GNU Lesser General Public License v.2.1.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public License
  14  * along with this program; if not, write to the Free Software Foundation,
  15  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  16  */
  17
  18 #ifndef _LVM_WRAPPERS_H
  19 #define _LVM_WRAPPERS_H
  20
  21 int lvm_getpagesize(void);
  22
  23 /*
  24  * Read 'len' bytes of entropy from /dev/urandom and store in 'buf'.
  25  */
  26 int read_urandom(void *buf, size_t len);
  27
  28 #  ifndef HAVE_SIGINTERRUPT
  29 #    define siginterrupt(sig, flag) \
  30         do { \
  31                 int ret; \
  32                 struct sigaction act; \
  33                 (void) sigaction(sig, NULL, &act); \
  34                 if (flag) \
  35                         act.sa_flags &= SA_RESTART; \
  36                 else \
  37                         act.sa_flags |= SA_RESTART; \
  38                 ret = sigaction(sig, &act, NULL); \
  39                 return ret; \
  40         while (0)
  41 #  endif
  42
  43 #endif