mirror of
git://git.sv.gnu.org/coreutils
synced 2026-06-06 23:59:19 -04:00
Jim Meyering
918fbb3810
(CHROOT_FOUND_BUT_CANNOT_INVOKE, CHROOT_FAILURE): Remove. (main): Initialize exit_failure to EXIT_FAIL. (main): Exit with status 1 rather than 127 if chroot itself fails, as per documentation. (main): Use EXIT_ENOENT and EXIT_CANNOT_INVOKE rather than roll-your-own symbols or integers.
114 lines
3.0 KiB
C
114 lines
3.0 KiB
C
/* chroot -- run command or shell with special root directory
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Copyright (C) 95, 96, 1997, 1999-2004 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* Written by Roland McGrath. */
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#include <config.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include "system.h"
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#include "error.h"
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#include "long-options.h"
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#include "quote.h"
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/* The official name of this program (e.g., no `g' prefix). */
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#define PROGRAM_NAME "chroot"
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#define AUTHORS "Roland McGrath"
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/* The name this program was run with, for error messages. */
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char *program_name;
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void
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usage (int status)
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{
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if (status != EXIT_SUCCESS)
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fprintf (stderr, _("Try `%s --help' for more information.\n"),
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program_name);
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else
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{
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printf (_("\
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Usage: %s NEWROOT [COMMAND...]\n\
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or: %s OPTION\n\
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"), program_name, program_name);
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fputs (_("\
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Run COMMAND with root directory set to NEWROOT.\n\
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\n\
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"), stdout);
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fputs (HELP_OPTION_DESCRIPTION, stdout);
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fputs (VERSION_OPTION_DESCRIPTION, stdout);
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fputs (_("\
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\n\
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If no command is given, run ``${SHELL} -i'' (default: /bin/sh).\n\
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"), stdout);
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printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
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}
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exit (status);
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}
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int
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main (int argc, char **argv)
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{
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initialize_main (&argc, &argv);
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program_name = argv[0];
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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initialize_exit_failure (EXIT_FAIL);
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atexit (close_stdout);
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parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
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usage, AUTHORS, (char const *) NULL);
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if (argc <= 1)
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{
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error (0, 0, _("too few arguments"));
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usage (EXIT_FAIL);
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}
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if (chroot (argv[1]))
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error (EXIT_FAIL, errno, _("cannot change root directory to %s"), argv[1]);
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if (chdir ("/"))
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error (EXIT_FAIL, errno, _("cannot chdir to root directory"));
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if (argc == 2)
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{
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/* No command. Run an interactive shell. */
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char *shell = getenv ("SHELL");
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if (shell == NULL)
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shell = "/bin/sh";
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argv[0] = shell;
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argv[1] = "-i";
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}
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else
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{
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/* The following arguments give the command. */
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argv += 2;
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}
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/* Execute the given command. */
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execvp (argv[0], argv);
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{
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int exit_status = (errno == ENOENT ? EXIT_ENOENT : EXIT_CANNOT_INVOKE);
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error (0, errno, _("cannot run command %s"), quote (argv[0]));
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exit (exit_status);
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}
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}
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