external/gpl2/lvm2/dist/lib/misc/lvm-wrappers.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 2006 Red Hat, Inc. All rights reserved.
   5  *
   6  * This file is part of LVM2.
   7  *
   8  * This copyrighted material is made available to anyone wishing to use,
   9  * modify, copy, or redistribute it subject to the terms and conditions
  10  * of the GNU Lesser General Public License v.2.1.
  11  *
  12  * You should have received a copy of the GNU Lesser General Public License
  13  * along with this program; if not, write to the Free Software Foundation,
  14  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  15  */
  16
  17 #include "lib.h"
  18
  19 #include <unistd.h>
  20 #include <fcntl.h>
  21
  22 int lvm_getpagesize(void)
  23 {
  24         return getpagesize();
  25 }
  26
  27 int read_urandom(void *buf, size_t len)
  28 {
  29         int fd;
  30
  31         /* FIXME: we should stat here, and handle other cases */
  32         /* FIXME: use common _io() routine's open/read/close */
  33         if ((fd = open("/dev/urandom", O_RDONLY)) < 0) {
  34                 log_sys_error("open", "read_urandom: /dev/urandom");
  35                 return 0;
  36         }
  37
  38         if (read(fd, buf, len) != (ssize_t) len) {
  39                 log_sys_error("read", "read_urandom: /dev/urandom");
  40                 if (close(fd))
  41                         stack;
  42                 return 0;
  43         }
  44
  45         if (close(fd))
  46                 stack;
  47
  48         return 1;
  49 }
  50