commands/cd.c

   1 /*
   2  * cd.c - change working directory
   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
  23 /**
  24  * @file
  25  * @brief Change working directory
  26  */
  27
  28 #include <common.h>
  29 #include <command.h>
  30 #include <fs.h>
  31 #include <errno.h>
  32
  33 static int do_cd (cmd_tbl_t *cmdtp, int argc, char *argv[])
  34 {
  35         int ret;
  36
  37         if (argc == 1)
  38                 ret = chdir("/");
  39         else
  40                 ret = chdir(argv[1]);
  41
  42         if (ret) {
  43                 perror("chdir");
  44                 return 1;
  45         }
  46
  47         return 0;
  48 }
  49
  50 static const __maybe_unused char cmd_cd_help[] =
  51 "Usage: cd [directory]\n"
  52 "change to directory. If called without argument, change to /\n";
  53
  54 U_BOOT_CMD_START(cd)
  55         .cmd            = do_cd,
  56         .usage          = "change working directory",
  57         U_BOOT_CMD_HELP(cmd_cd_help)
  58 U_BOOT_CMD_END
  59
  60 /**
  61  * @page cd_command cd (change working directory)
  62  *
  63  * Usage is: cd [\<directory name>]
  64  *
  65  * Change to \<directory name>. If called without argument, change to \b /
  66  * (root)
  67  */