Permalink
Switch branches/tags
Nothing to show
Find file
Fetching contributors…
Cannot retrieve contributors at this time
1097 lines (986 sloc) 24.3 KB
/* 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.
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
/* 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.
*/
//usage:#define fsck_trivial_usage
//usage: "[-ANPRTV] [-C FD] [-t FSTYPE] [FS_OPTS] [BLOCKDEV]..."
//usage:#define fsck_full_usage "\n\n"
//usage: "Check and repair filesystems\n"
//usage: "\n -A Walk /etc/fstab and check all filesystems"
//usage: "\n -N Don't execute, just show what would be done"
//usage: "\n -P With -A, check filesystems in parallel"
//usage: "\n -R With -A, skip the root filesystem"
//usage: "\n -T Don't show title on startup"
//usage: "\n -V Verbose"
//usage: "\n -C n Write status information to specified filedescriptor"
//usage: "\n -t TYPE List of filesystem types to check"
#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
/* fsck 1.41.4 (27-Jan-2009) manpage says:
* 0 - No errors
* 1 - File system errors corrected
* 2 - System should be rebooted
* 4 - File system errors left uncorrected
* 8 - Operational error
* 16 - Usage or syntax error
* 32 - Fsck canceled by user request
* 128 - Shared library error
*/
#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;
char *opts;
int passno;
int flags;
};
#define FLAG_DONE 1
#define FLAG_PROGRESS 2
/*
* Structure to allow exit codes to be stored
*/
struct fsck_instance {
struct fsck_instance *next;
int pid;
int flags;
#if DO_PROGRESS_INDICATOR
time_t start_time;
#endif
char *prog;
char *device;
char *base_device; /* /dev/hda for /dev/hdaN etc */
};
static const char ignored_types[] ALIGN1 =
"ignore\0"
"iso9660\0"
"nfs\0"
"proc\0"
"sw\0"
"swap\0"
"tmpfs\0"
"devpts\0";
#if 0
static const char really_wanted[] ALIGN1 =
"minix\0"
"ext2\0"
"ext3\0"
"jfs\0"
"reiserfs\0"
"xiafs\0"
"xfs\0";
#endif
#define BASE_MD "/dev/md"
static char **args;
static int num_args;
static int verbose;
#define FS_TYPE_FLAG_NORMAL 0
#define FS_TYPE_FLAG_OPT 1
#define FS_TYPE_FLAG_NEGOPT 2
static char **fs_type_list;
static uint8_t *fs_type_flag;
static smallint fs_type_negated;
static smallint noexecute;
static smallint serialize;
static smallint skip_root;
/* static smallint like_mount; */
static smallint parallel_root;
static smallint force_all_parallel;
#if DO_PROGRESS_INDICATOR
static smallint progress;
static int progress_fd;
#endif
static int num_running;
static int max_running;
static char *fstype;
static struct fs_info *filesys_info;
static struct fs_info *filesys_last;
static struct fsck_instance *instance_list;
/*
* Return the "base device" given a particular device; this is used to
* assure that we only fsck one partition on a particular drive at any
* one time. Otherwise, the disk heads will be seeking all over the
* place. If the base device cannot be determined, return NULL.
*
* The base_device() function returns an allocated string which must
* be freed.
*/
#if ENABLE_FEATURE_DEVFS
/*
* Required for the uber-silly devfs /dev/ide/host1/bus2/target3/lun3
* pathames.
*/
static const char *const devfs_hier[] = {
"host", "bus", "target", "lun", NULL
};
#endif
static char *base_device(const char *device)
{
char *str, *cp;
#if ENABLE_FEATURE_DEVFS
const char *const *hier;
const char *disk;
int len;
#endif
str = xstrdup(device);
/* Skip over "/dev/"; if it's not present, give up */
cp = skip_dev_pfx(str);
if (cp == str)
goto errout;
/*
* For md devices, we treat them all as if they were all
* on one disk, since we don't know how to parallelize them.
*/
if (cp[0] == 'm' && cp[1] == 'd') {
cp[2] = 0;
return str;
}
/* Handle DAC 960 devices */
if (strncmp(cp, "rd/", 3) == 0) {
cp += 3;
if (cp[0] != 'c' || !isdigit(cp[1])
|| cp[2] != 'd' || !isdigit(cp[3]))
goto errout;
cp[4] = 0;
return str;
}
/* Now let's handle /dev/hd* and /dev/sd* devices.... */
if ((cp[0] == 'h' || cp[0] == 's') && cp[1] == 'd') {
cp += 2;
/* If there's a single number after /dev/hd, skip it */
if (isdigit(*cp))
cp++;
/* What follows must be an alpha char, or give up */
if (!isalpha(*cp))
goto errout;
cp[1] = 0;
return str;
}
#if ENABLE_FEATURE_DEVFS
/* Now let's handle devfs (ugh) names */
len = 0;
if (strncmp(cp, "ide/", 4) == 0)
len = 4;
if (strncmp(cp, "scsi/", 5) == 0)
len = 5;
if (len) {
cp += len;
/*
* Now we proceed down the expected devfs hierarchy.
* i.e., .../host1/bus2/target3/lun4/...
* If we don't find the expected token, followed by
* some number of digits at each level, abort.
*/
for (hier = devfs_hier; *hier; hier++) {
len = strlen(*hier);
if (strncmp(cp, *hier, len) != 0)
goto errout;
cp += len;
while (*cp != '/' && *cp != 0) {
if (!isdigit(*cp))
goto errout;
cp++;
}
cp++;
}
cp[-1] = 0;
return str;
}
/* Now handle devfs /dev/disc or /dev/disk names */
disk = 0;
if (strncmp(cp, "discs/", 6) == 0)
disk = "disc";
else if (strncmp(cp, "disks/", 6) == 0)
disk = "disk";
if (disk) {
cp += 6;
if (strncmp(cp, disk, 4) != 0)
goto errout;
cp += 4;
while (*cp != '/' && *cp != 0) {
if (!isdigit(*cp))
goto errout;
cp++;
}
*cp = 0;
return str;
}
#endif
errout:
free(str);
return NULL;
}
static void free_instance(struct fsck_instance *p)
{
free(p->prog);
free(p->device);
free(p->base_device);
free(p);
}
static struct fs_info *create_fs_device(const char *device, const char *mntpnt,
const char *type, const char *opts,
int passno)
{
struct fs_info *fs;
fs = xzalloc(sizeof(*fs));
fs->device = xstrdup(device);
fs->mountpt = xstrdup(mntpnt);
if (strchr(type, ','))
type = (char *)"auto";
fs->type = xstrdup(type);
fs->opts = xstrdup(opts ? opts : "");
fs->passno = passno < 0 ? 1 : passno;
/*fs->flags = 0; */
/*fs->next = NULL; */
if (!filesys_info)
filesys_info = fs;
else
filesys_last->next = fs;
filesys_last = fs;
return fs;
}
/* Load the filesystem database from /etc/fstab */
static void load_fs_info(const char *filename)
{
FILE *fstab;
struct mntent mte;
fstab = setmntent(filename, "r");
if (!fstab) {
bb_perror_msg("can't read '%s'", filename);
return;
}
// Loop through entries
while (getmntent_r(fstab, &mte, bb_common_bufsiz1, COMMON_BUFSIZE)) {
//bb_info_msg("CREATE[%s][%s][%s][%s][%d]", mte.mnt_fsname, mte.mnt_dir,
// mte.mnt_type, mte.mnt_opts,
// mte.mnt_passno);
create_fs_device(mte.mnt_fsname, mte.mnt_dir,
mte.mnt_type, mte.mnt_opts,
mte.mnt_passno);
}
endmntent(fstab);
}
/* Lookup filesys in /etc/fstab and return the corresponding entry. */
static struct fs_info *lookup(char *filesys)
{
struct fs_info *fs;
for (fs = filesys_info; fs; fs = fs->next) {
if (strcmp(filesys, fs->device) == 0
|| (fs->mountpt && strcmp(filesys, fs->mountpt) == 0)
)
break;
}
return fs;
}
#if DO_PROGRESS_INDICATOR
static int progress_active(void)
{
struct fsck_instance *inst;
for (inst = instance_list; inst; inst = inst->next) {
if (inst->flags & FLAG_DONE)
continue;
if (inst->flags & FLAG_PROGRESS)
return 1;
}
return 0;
}
#endif
/*
* Send a signal to all outstanding fsck child processes
*/
static void kill_all_if_got_signal(void)
{
static smallint kill_sent;
struct fsck_instance *inst;
if (!bb_got_signal || kill_sent)
return;
for (inst = instance_list; inst; inst = inst->next) {
if (inst->flags & FLAG_DONE)
continue;
kill(inst->pid, SIGTERM);
}
kill_sent = 1;
}
/*
* Wait for one child process to exit; when it does, unlink it from
* the list of executing child processes, free, and return its exit status.
* If there is no exited child, return -1.
*/
static int wait_one(int flags)
{
int status;
int sig;
struct fsck_instance *inst, *prev;
pid_t pid;
if (!instance_list)
return -1;
/* if (noexecute) { already returned -1; } */
while (1) {
pid = waitpid(-1, &status, flags);
kill_all_if_got_signal();
if (pid == 0) /* flags == WNOHANG and no children exited */
return -1;
if (pid < 0) {
if (errno == EINTR)
continue;
if (errno == ECHILD) { /* paranoia */
bb_error_msg("wait: no more children");
return -1;
}
bb_perror_msg("wait");
continue;
}
prev = NULL;
inst = instance_list;
do {
if (inst->pid == pid)
goto child_died;
prev = inst;
inst = inst->next;
} while (inst);
}
child_died:
if (WIFEXITED(status))
status = WEXITSTATUS(status);
else if (WIFSIGNALED(status)) {
sig = WTERMSIG(status);
status = EXIT_UNCORRECTED;
if (sig != SIGINT) {
printf("Warning: %s %s terminated "
"by signal %d\n",
inst->prog, inst->device, sig);
status = EXIT_ERROR;
}
} else {
printf("%s %s: status is %x, should never happen\n",
inst->prog, inst->device, status);
status = EXIT_ERROR;
}
#if DO_PROGRESS_INDICATOR
if (progress && (inst->flags & FLAG_PROGRESS) && !progress_active()) {
struct fsck_instance *inst2;
for (inst2 = instance_list; inst2; inst2 = inst2->next) {
if (inst2->flags & FLAG_DONE)
continue;
if (strcmp(inst2->type, "ext2") != 0
&& strcmp(inst2->type, "ext3") != 0
) {
continue;
}
/* ext[23], we will send USR1
* (request to start displaying progress bar)
*
* If we've just started the fsck, wait a tiny
* bit before sending the kill, to give it
* time to set up the signal handler
*/
if (inst2->start_time >= time(NULL) - 1)
sleep(1);
kill(inst2->pid, SIGUSR1);
inst2->flags |= FLAG_PROGRESS;
break;
}
}
#endif
if (prev)
prev->next = inst->next;
else
instance_list = inst->next;
if (verbose > 1)
printf("Finished with %s (exit status %d)\n",
inst->device, status);
num_running--;
free_instance(inst);
return status;
}
/*
* Wait until all executing child processes have exited; return the
* logical OR of all of their exit code values.
*/
#define FLAG_WAIT_ALL 0
#define FLAG_WAIT_ATLEAST_ONE WNOHANG
static int wait_many(int flags)
{
int exit_status;
int global_status = 0;
int wait_flags = 0;
while ((exit_status = wait_one(wait_flags)) != -1) {
global_status |= exit_status;
wait_flags |= flags;
}
return global_status;
}
/*
* Execute a particular fsck program, and link it into the list of
* child processes we are waiting for.
*/
static void execute(const char *type, const char *device,
const char *mntpt /*, int interactive */)
{
int i;
struct fsck_instance *inst;
pid_t pid;
args[0] = xasprintf("fsck.%s", type);
#if DO_PROGRESS_INDICATOR
if (progress && !progress_active()) {
if (strcmp(type, "ext2") == 0
|| strcmp(type, "ext3") == 0
) {
args[XXX] = xasprintf("-C%d", progress_fd); /* 1 */
inst->flags |= FLAG_PROGRESS;
}
}
#endif
args[num_args - 2] = (char*)device;
/* args[num_args - 1] = NULL; - already is */
if (verbose || noexecute) {
printf("[%s (%d) -- %s]", args[0], num_running,
mntpt ? mntpt : device);
for (i = 0; args[i]; i++)
printf(" %s", args[i]);
bb_putchar('\n');
}
/* Fork and execute the correct program. */
pid = -1;
if (!noexecute) {
pid = spawn(args);
if (pid < 0)
bb_simple_perror_msg(args[0]);
}
#if DO_PROGRESS_INDICATOR
free(args[XXX]);
#endif
/* No child, so don't record an instance */
if (pid <= 0) {
free(args[0]);
return;
}
inst = xzalloc(sizeof(*inst));
inst->pid = pid;
inst->prog = args[0];
inst->device = xstrdup(device);
inst->base_device = base_device(device);
#if DO_PROGRESS_INDICATOR
inst->start_time = time(NULL);
#endif
/* Add to the list of running fsck's.
* (was adding to the end, but adding to the front is simpler...) */
inst->next = instance_list;
instance_list = inst;
}
/*
* Run the fsck program on a particular device
*
* If the type is specified using -t, and it isn't prefixed with "no"
* (as in "noext2") and only one filesystem type is specified, then
* use that type regardless of what is specified in /etc/fstab.
*
* If the type isn't specified by the user, then use either the type
* specified in /etc/fstab, or "auto".
*/
static void fsck_device(struct fs_info *fs /*, int interactive */)
{
const char *type;
if (strcmp(fs->type, "auto") != 0) {
type = fs->type;
if (verbose > 2)
bb_info_msg("using filesystem type '%s' %s",
type, "from fstab");
} else if (fstype
&& (fstype[0] != 'n' || fstype[1] != 'o') /* != "no" */
&& strncmp(fstype, "opts=", 5) != 0
&& strncmp(fstype, "loop", 4) != 0
&& !strchr(fstype, ',')
) {
type = fstype;
if (verbose > 2)
bb_info_msg("using filesystem type '%s' %s",
type, "from -t");
} else {
type = "auto";
if (verbose > 2)
bb_info_msg("using filesystem type '%s' %s",
type, "(default)");
}
num_running++;
execute(type, fs->device, fs->mountpt /*, interactive */);
}
/*
* Returns TRUE if a partition on the same disk is already being
* checked.
*/
static int device_already_active(char *device)
{
struct fsck_instance *inst;
char *base;
if (force_all_parallel)
return 0;
#ifdef BASE_MD
/* Don't check a soft raid disk with any other disk */
if (instance_list
&& (!strncmp(instance_list->device, BASE_MD, sizeof(BASE_MD)-1)
|| !strncmp(device, BASE_MD, sizeof(BASE_MD)-1))
) {
return 1;
}
#endif
base = base_device(device);
/*
* If we don't know the base device, assume that the device is
* already active if there are any fsck instances running.
*/
if (!base)
return (instance_list != NULL);
for (inst = instance_list; inst; inst = inst->next) {
if (!inst->base_device || !strcmp(base, inst->base_device)) {
free(base);
return 1;
}
}
free(base);
return 0;
}
/*
* This function returns true if a particular option appears in a
* comma-delimited options list
*/
static int opt_in_list(char *opt, char *optlist)
{
char *s;
int len;
if (!optlist)
return 0;
len = strlen(opt);
s = optlist - 1;
while (1) {
s = strstr(s + 1, opt);
if (!s)
return 0;
/* neither "opt.." nor "xxx,opt.."? */
if (s != optlist && s[-1] != ',')
continue;
/* neither "..opt" nor "..opt,xxx"? */
if (s[len] != '\0' && s[len] != ',')
continue;
return 1;
}
}
/* See if the filesystem matches the criteria given by the -t option */
static int fs_match(struct fs_info *fs)
{
int n, ret, checked_type;
char *cp;
if (!fs_type_list)
return 1;
ret = 0;
checked_type = 0;
n = 0;
while (1) {
cp = fs_type_list[n];
if (!cp)
break;
switch (fs_type_flag[n]) {
case FS_TYPE_FLAG_NORMAL:
checked_type++;
if (strcmp(cp, fs->type) == 0)
ret = 1;
break;
case FS_TYPE_FLAG_NEGOPT:
if (opt_in_list(cp, fs->opts))
return 0;
break;
case FS_TYPE_FLAG_OPT:
if (!opt_in_list(cp, fs->opts))
return 0;
break;
}
n++;
}
if (checked_type == 0)
return 1;
return (fs_type_negated ? !ret : ret);
}
/* Check if we should ignore this filesystem. */
static int ignore(struct fs_info *fs)
{
/*
* If the pass number is 0, ignore it.
*/
if (fs->passno == 0)
return 1;
/*
* If a specific fstype is specified, and it doesn't match,
* ignore it.
*/
if (!fs_match(fs))
return 1;
/* Are we ignoring this type? */
if (index_in_strings(ignored_types, fs->type) >= 0)
return 1;
/* We can and want to check this file system type. */
return 0;
}
/* Check all file systems, using the /etc/fstab table. */
static int check_all(void)
{
struct fs_info *fs;
int status = EXIT_OK;
smallint not_done_yet;
smallint pass_done;
int passno;
if (verbose)
puts("Checking all filesystems");
/*
* Do an initial scan over the filesystem; mark filesystems
* which should be ignored as done, and resolve any "auto"
* filesystem types (done as a side-effect of calling ignore()).
*/
for (fs = filesys_info; fs; fs = fs->next)
if (ignore(fs))
fs->flags |= FLAG_DONE;
/*
* Find and check the root filesystem.
*/
if (!parallel_root) {
for (fs = filesys_info; fs; fs = fs->next) {
if (LONE_CHAR(fs->mountpt, '/')) {
if (!skip_root && !ignore(fs)) {
fsck_device(fs /*, 1*/);
status |= wait_many(FLAG_WAIT_ALL);
if (status > EXIT_NONDESTRUCT)
return status;
}
fs->flags |= FLAG_DONE;
break;
}
}
}
/*
* This is for the bone-headed user who has root
* filesystem listed twice.
* "Skip root" will skip _all_ root entries.
*/
if (skip_root)
for (fs = filesys_info; fs; fs = fs->next)
if (LONE_CHAR(fs->mountpt, '/'))
fs->flags |= FLAG_DONE;
not_done_yet = 1;
passno = 1;
while (not_done_yet) {
not_done_yet = 0;
pass_done = 1;
for (fs = filesys_info; fs; fs = fs->next) {
if (bb_got_signal)
break;
if (fs->flags & FLAG_DONE)
continue;
/*
* If the filesystem's pass number is higher
* than the current pass number, then we didn't
* do it yet.
*/
if (fs->passno > passno) {
not_done_yet = 1;
continue;
}
/*
* If a filesystem on a particular device has
* already been spawned, then we need to defer
* this to another pass.
*/
if (device_already_active(fs->device)) {
pass_done = 0;
continue;
}
/*
* Spawn off the fsck process
*/
fsck_device(fs /*, serialize*/);
fs->flags |= FLAG_DONE;
/*
* Only do one filesystem at a time, or if we
* have a limit on the number of fsck's extant
* at one time, apply that limit.
*/
if (serialize
|| (max_running && (num_running >= max_running))
) {
pass_done = 0;
break;
}
}
if (bb_got_signal)
break;
if (verbose > 1)
printf("--waiting-- (pass %d)\n", passno);
status |= wait_many(pass_done ? FLAG_WAIT_ALL :
FLAG_WAIT_ATLEAST_ONE);
if (pass_done) {
if (verbose > 1)
puts("----------------------------------");
passno++;
} else
not_done_yet = 1;
}
kill_all_if_got_signal();
status |= wait_many(FLAG_WAIT_ATLEAST_ONE);
return status;
}
/*
* Deal with the fsck -t argument.
* Huh, for mount "-t novfat,nfs" means "neither vfat nor nfs"!
* Why here we require "-t novfat,nonfs" ??
*/
static void compile_fs_type(char *fs_type)
{
char *s;
int num = 2;
smallint negate;
s = fs_type;
while ((s = strchr(s, ','))) {
num++;
s++;
}
fs_type_list = xzalloc(num * sizeof(fs_type_list[0]));
fs_type_flag = xzalloc(num * sizeof(fs_type_flag[0]));
fs_type_negated = -1; /* not yet known is it negated or not */
num = 0;
s = fs_type;
while (1) {
char *comma;
negate = 0;
if (s[0] == 'n' && s[1] == 'o') { /* "no.." */
s += 2;
negate = 1;
} else if (s[0] == '!') {
s++;
negate = 1;
}
if (strcmp(s, "loop") == 0)
/* loop is really short-hand for opts=loop */
goto loop_special_case;
if (strncmp(s, "opts=", 5) == 0) {
s += 5;
loop_special_case:
fs_type_flag[num] = negate ? FS_TYPE_FLAG_NEGOPT : FS_TYPE_FLAG_OPT;
} else {
if (fs_type_negated == -1)
fs_type_negated = negate;
if (fs_type_negated != negate)
bb_error_msg_and_die(
"either all or none of the filesystem types passed to -t must be prefixed "
"with 'no' or '!'");
}
comma = strchr(s, ',');
fs_type_list[num++] = comma ? xstrndup(s, comma-s) : xstrdup(s);
if (!comma)
break;
s = comma + 1;
}
}
static char **new_args(void)
{
args = xrealloc_vector(args, 2, num_args);
return &args[num_args++];
}
int fsck_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int fsck_main(int argc UNUSED_PARAM, char **argv)
{
int i, status;
/*int interactive;*/
struct fs_info *fs;
const char *fstab;
char *tmp;
char **devices;
int num_devices;
smallint opts_for_fsck;
smallint doall;
smallint notitle;
/* we want wait() to be interruptible */
signal_no_SA_RESTART_empty_mask(SIGINT, record_signo);
signal_no_SA_RESTART_empty_mask(SIGTERM, record_signo);
setbuf(stdout, NULL);
opts_for_fsck = doall = notitle = 0;
devices = NULL;
num_devices = 0;
new_args(); /* args[0] = NULL, will be replaced by fsck.<type> */
/* instance_list = NULL; - in bss, so already zeroed */
while (*++argv) {
int j;
int optpos;
char *options;
char *arg = *argv;
/* "/dev/blk" or "/path" or "UUID=xxx" or "LABEL=xxx" */
if ((arg[0] == '/' && !opts_for_fsck) || strchr(arg, '=')) {
// FIXME: must check that arg is a blkdev, or resolve
// "/path", "UUID=xxx" or "LABEL=xxx" into block device name
// ("UUID=xxx"/"LABEL=xxx" can probably shifted to fsck.auto duties)
devices = xrealloc_vector(devices, 2, num_devices);
devices[num_devices++] = arg;
continue;
}
if (arg[0] != '-' || opts_for_fsck) {
*new_args() = arg;
continue;
}
if (LONE_CHAR(arg + 1, '-')) { /* "--" ? */
opts_for_fsck = 1;
continue;
}
optpos = 0;
options = NULL;
for (j = 1; arg[j]; j++) {
switch (arg[j]) {
case 'A':
doall = 1;
break;
#if DO_PROGRESS_INDICATOR
case 'C':
progress = 1;
if (arg[++j]) { /* -Cn */
progress_fd = xatoi_positive(&arg[j]);
goto next_arg;
}
/* -C n */
if (!*++argv)
bb_show_usage();
progress_fd = xatoi_positive(*argv);
goto next_arg;
#endif
case 'V':
verbose++;
break;
case 'N':
noexecute = 1;
break;
case 'R':
skip_root = 1;
break;
case 'T':
notitle = 1;
break;
/* case 'M':
like_mount = 1;
break; */
case 'P':
parallel_root = 1;
break;
case 's':
serialize = 1;
break;
case 't':
if (fstype)
bb_show_usage();
if (arg[++j])
tmp = &arg[j];
else if (*++argv)
tmp = *argv;
else
bb_show_usage();
fstype = xstrdup(tmp);
compile_fs_type(fstype);
goto next_arg;
case '?':
bb_show_usage();
break;
default:
optpos++;
/* one extra for '\0' */
options = xrealloc(options, optpos + 2);
options[optpos] = arg[j];
break;
}
}
next_arg:
if (optpos) {
options[0] = '-';
options[optpos + 1] = '\0';
*new_args() = options;
}
}
if (getenv("FSCK_FORCE_ALL_PARALLEL"))
force_all_parallel = 1;
tmp = getenv("FSCK_MAX_INST");
if (tmp)
max_running = xatoi(tmp);
new_args(); /* args[num_args - 2] will be replaced by <device> */
new_args(); /* args[num_args - 1] is the last, NULL element */
if (!notitle)
puts("fsck (busybox "BB_VER", "BB_BT")");
/* Even plain "fsck /dev/hda1" needs fstab to get fs type,
* so we are scanning it anyway */
fstab = getenv("FSTAB_FILE");
if (!fstab)
fstab = "/etc/fstab";
load_fs_info(fstab);
/*interactive = (num_devices == 1) | serialize;*/
if (num_devices == 0)
/*interactive =*/ serialize = doall = 1;
if (doall)
return check_all();
status = 0;
for (i = 0; i < num_devices; i++) {
if (bb_got_signal) {
kill_all_if_got_signal();
break;
}
fs = lookup(devices[i]);
if (!fs)
fs = create_fs_device(devices[i], "", "auto", NULL, -1);
fsck_device(fs /*, interactive */);
if (serialize
|| (max_running && (num_running >= max_running))
) {
int exit_status = wait_one(0);
if (exit_status >= 0)
status |= exit_status;
if (verbose > 1)
puts("----------------------------------");
}
}
status |= wait_many(FLAG_WAIT_ALL);
return status;
}