busybox

/* vi: set sw=4 ts=4: */

/*

 * fsck --- A generic, parallelizing front-end for the fsck program.

 * It will automatically try to run fsck programs in parallel if the

 * devices are on separate spindles.  It is based on the same ideas as

 * the generic front end for fsck by David Engel and Fred van Kempen,

 * but it has been completely rewritten from scratch to support

 * parallel execution.

 *

 * Written by Theodore Ts'o, <tytso@mit.edu>

 *

 * Miquel van Smoorenburg (miquels@drinkel.ow.org) 20-Oct-1994:

 *   o Changed -t fstype to behave like with mount when -A (all file

 *     systems) or -M (like mount) is specified.

 *   o fsck looks if it can find the fsck.type program to decide

 *     if it should ignore the fs type. This way more fsck programs

 *     can be added without changing this front-end.

 *   o -R flag skip root file system.

 *

 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,

 *      2001, 2002, 2003, 2004, 2005 by  Theodore Ts'o.

 *

 * %Begin-Header%

 * This file may be redistributed under the terms of the GNU Public

 * License.

 * %End-Header%

 */

​

/* All filesystem specific hooks have been removed.

 * If filesystem cannot be determined, we will execute

 * "fsck.auto". Currently this also happens if you specify

 * UUID=xxx or LABEL=xxx as an object to check.

 * Detection code for that is also probably has to be in fsck.auto.

 *

 * In other words, this is _really_ is just a driver program which

 * spawns actual fsck.something for each filesystem to check.

 * It doesn't guess filesystem types from on-disk format.

 */

​

#include "libbb.h"

​

/* "progress indicator" code is somewhat buggy and ext[23] specific.

 * We should be filesystem agnostic. IOW: there should be a well-defined

 * API for fsck.something, NOT ad-hoc hacks in generic fsck. */

#define DO_PROGRESS_INDICATOR 0

​

#define EXIT_OK          0

#define EXIT_NONDESTRUCT 1

#define EXIT_DESTRUCT    2

#define EXIT_UNCORRECTED 4

#define EXIT_ERROR       8

#define EXIT_USAGE       16

#define FSCK_CANCELED    32     /* Aborted with a signal or ^C */

​

/*

 * Internal structure for mount table entries.

 */

​

struct fs_info {

    struct fs_info *next;

    char    *device;

    char    *mountpt;

    char    *type;