1 /*        $NetBSD: lvm-wrappers.h,v 1.1.1.3 2009/12/02 00:25:41 haad Exp $      */
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
44