commands/umount.c

   1 /*
   2  * umount.c - umount filesystems
   3  *
   4  * Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
   5  *
   6  * See file CREDITS for list of people who contributed to this
   7  * project.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2
  11  * as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22 #include <common.h>
  23 #include <command.h>
  24 #include <fs.h>
  25 #include <errno.h>
  26
  27 static int do_umount(struct command *cmdtp, int argc, char *argv[])
  28 {
  29         int ret = 0;
  30
  31         if (argc != 2)
  32                 return COMMAND_ERROR_USAGE;
  33
  34         if ((ret = umount(argv[1]))) {
  35                 perror("umount");
  36                 return 1;
  37         }
  38         return 0;
  39 }
  40
  41 static const __maybe_unused char cmd_umount_help[] =
  42 "Usage: umount <mountpoint>\n"
  43 "umount a filesystem mounted on a specific mountpoint\n";
  44
  45 BAREBOX_CMD_START(umount)
  46         .cmd            = do_umount,
  47         .usage          = "umount a filesystem",
  48         BAREBOX_CMD_HELP(cmd_umount_help)
  49 BAREBOX_CMD_END