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e2fsprogs/e2fsck/unix.c
Theodore Ts'o 0b76d709f4 e2fsck: allow extent tree optimization to be disabled 
Add an extended option, -E no_optimize_extents, as well as a
e2fsck.conf profile option, to disable extent tree optimization.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2017-04-21 03:33:47 -04:00

1969 lines
53 KiB
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/*
* unix.c - The unix-specific code for e2fsck
*
* Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
* License.
* %End-Header%
*/
#define _XOPEN_SOURCE 600 /* for inclusion of sa_handler in Solaris */
#include "config.h"
#include <stdio.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <string.h>
#include <fcntl.h>
#include <ctype.h>
#include <time.h>
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
extern char *optarg;
extern int optind;
#endif
#include <unistd.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#endif
#include <libgen.h>
#include "e2p/e2p.h"
#include "et/com_err.h"
#include "e2p/e2p.h"
#include "support/plausible.h"
#include "e2fsck.h"
#include "problem.h"
#include "jfs_user.h"
#include "../version.h"
/* Command line options */
static int cflag; /* check disk */
static int show_version_only;
static int verbose;
static int replace_bad_blocks;
static int keep_bad_blocks;
static char *bad_blocks_file;
e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
#ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jbd-debug */
int journal_enable_debug = -1;
#endif
static void usage(e2fsck_t ctx)
{
fprintf(stderr,
_("Usage: %s [-panyrcdfktvDFV] [-b superblock] [-B blocksize]\n"
"\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n"
"\t\t[-E extended-options] [-z undo_file] device\n"),
ctx->program_name);
fprintf(stderr, "%s", _("\nEmergency help:\n"
" -p Automatic repair (no questions)\n"
" -n Make no changes to the filesystem\n"
" -y Assume \"yes\" to all questions\n"
" -c Check for bad blocks and add them to the badblock list\n"
" -f Force checking even if filesystem is marked clean\n"));
fprintf(stderr, "%s", _(""
" -v Be verbose\n"
" -b superblock Use alternative superblock\n"
" -B blocksize Force blocksize when looking for superblock\n"
" -j external_journal Set location of the external journal\n"
" -l bad_blocks_file Add to badblocks list\n"
" -L bad_blocks_file Set badblocks list\n"
" -z undo_file Create an undo file\n"
));
exit(FSCK_USAGE);
}
static void show_stats(e2fsck_t ctx)
{
ext2_filsys fs = ctx->fs;
ext2_ino_t inodes, inodes_used;
blk64_t blocks, blocks_used;
unsigned int dir_links;
unsigned int num_files, num_links;
__u32 *mask, m;
int frag_percent_file, frag_percent_dir, frag_percent_total;
int i, j, printed = 0;
dir_links = 2 * ctx->fs_directory_count - 1;
num_files = ctx->fs_total_count - dir_links;
num_links = ctx->fs_links_count - dir_links;
inodes = fs->super->s_inodes_count;
inodes_used = (fs->super->s_inodes_count -
fs->super->s_free_inodes_count);
blocks = ext2fs_blocks_count(fs->super);
blocks_used = (ext2fs_blocks_count(fs->super) -
ext2fs_free_blocks_count(fs->super));
frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used;
frag_percent_file = (frag_percent_file + 5) / 10;
frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used;
frag_percent_dir = (frag_percent_dir + 5) / 10;
frag_percent_total = ((10000 * (ctx->fs_fragmented +
ctx->fs_fragmented_dir))
/ inodes_used);
frag_percent_total = (frag_percent_total + 5) / 10;
if (!verbose) {
log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), "
"%llu/%llu blocks\n"),
ctx->device_name, inodes_used, inodes,
frag_percent_total / 10, frag_percent_total % 10,
blocks_used, blocks);
return;
}
profile_get_boolean(ctx->profile, "options", "report_features", 0, 0,
&i);
if (verbose && i) {
log_out(ctx, "\nFilesystem features:");
mask = &ctx->fs->super->s_feature_compat;
for (i = 0; i < 3; i++, mask++) {
for (j = 0, m = 1; j < 32; j++, m <<= 1) {
if (*mask & m) {
log_out(ctx, " %s",
e2p_feature2string(i, m));
printed++;
}
}
}
if (printed == 0)
log_out(ctx, " (none)");
log_out(ctx, "\n");
}
log_out(ctx, P_("\n%12u inode used (%2.2f%%, out of %u)\n",
"\n%12u inodes used (%2.2f%%, out of %u)\n",
inodes_used), inodes_used,
100.0 * inodes_used / inodes, inodes);
log_out(ctx, P_("%12u non-contiguous file (%0d.%d%%)\n",
"%12u non-contiguous files (%0d.%d%%)\n",
ctx->fs_fragmented),
ctx->fs_fragmented, frag_percent_file / 10,
frag_percent_file % 10);
log_out(ctx, P_("%12u non-contiguous directory (%0d.%d%%)\n",
"%12u non-contiguous directories (%0d.%d%%)\n",
ctx->fs_fragmented_dir),
ctx->fs_fragmented_dir, frag_percent_dir / 10,
frag_percent_dir % 10);
log_out(ctx, _(" # of inodes with ind/dind/tind blocks: "
"%u/%u/%u\n"),
ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
if (ctx->extent_depth_count[j])
break;
if (++j) {
log_out(ctx, "%s", _(" Extent depth histogram: "));
for (i=0; i < j; i++) {
if (i)
fputc('/', stdout);
log_out(ctx, "%u", ctx->extent_depth_count[i]);
}
log_out(ctx, "\n");
}
log_out(ctx, P_("%12llu block used (%2.2f%%, out of %llu)\n",
"%12llu blocks used (%2.2f%%, out of %llu)\n",
blocks_used),
blocks_used, 100.0 * blocks_used / blocks, blocks);
log_out(ctx, P_("%12u bad block\n", "%12u bad blocks\n",
ctx->fs_badblocks_count), ctx->fs_badblocks_count);
log_out(ctx, P_("%12u large file\n", "%12u large files\n",
ctx->large_files), ctx->large_files);
log_out(ctx, P_("\n%12u regular file\n", "\n%12u regular files\n",
ctx->fs_regular_count), ctx->fs_regular_count);
log_out(ctx, P_("%12u directory\n", "%12u directories\n",
ctx->fs_directory_count), ctx->fs_directory_count);
log_out(ctx, P_("%12u character device file\n",
"%12u character device files\n", ctx->fs_chardev_count),
ctx->fs_chardev_count);
log_out(ctx, P_("%12u block device file\n", "%12u block device files\n",
ctx->fs_blockdev_count), ctx->fs_blockdev_count);
log_out(ctx, P_("%12u fifo\n", "%12u fifos\n", ctx->fs_fifo_count),
ctx->fs_fifo_count);
log_out(ctx, P_("%12u link\n", "%12u links\n", num_links),
ctx->fs_links_count - dir_links);
log_out(ctx, P_("%12u symbolic link", "%12u symbolic links",
ctx->fs_symlinks_count), ctx->fs_symlinks_count);
log_out(ctx, P_(" (%u fast symbolic link)\n",
" (%u fast symbolic links)\n",
ctx->fs_fast_symlinks_count),
ctx->fs_fast_symlinks_count);
log_out(ctx, P_("%12u socket\n", "%12u sockets\n",
ctx->fs_sockets_count),
ctx->fs_sockets_count);
log_out(ctx, "------------\n");
log_out(ctx, P_("%12u file\n", "%12u files\n", num_files),
num_files);
}
static void check_mount(e2fsck_t ctx)
{
errcode_t retval;
int cont;
retval = ext2fs_check_if_mounted(ctx->filesystem_name,
&ctx->mount_flags);
if (retval) {
com_err("ext2fs_check_if_mount", retval,
_("while determining whether %s is mounted."),
ctx->filesystem_name);
return;
}
/*
* If the filesystem isn't mounted, or it's the root
* filesystem and it's mounted read-only, and we're not doing
* a read/write check, then everything's fine.
*/
if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) ||
((ctx->mount_flags & EXT2_MF_ISROOT) &&
(ctx->mount_flags & EXT2_MF_READONLY) &&
!(ctx->options & E2F_OPT_WRITECHECK)))
return;
if (((ctx->options & E2F_OPT_READONLY) ||
((ctx->options & E2F_OPT_FORCE) &&
(ctx->mount_flags & EXT2_MF_READONLY))) &&
!(ctx->options & E2F_OPT_WRITECHECK)) {
if (ctx->mount_flags & EXT2_MF_MOUNTED)
log_out(ctx, _("Warning! %s is mounted.\n"),
ctx->filesystem_name);
else
log_out(ctx, _("Warning! %s is in use.\n"),
ctx->filesystem_name);
return;
}
if (ctx->mount_flags & EXT2_MF_MOUNTED)
log_out(ctx, _("%s is mounted.\n"), ctx->filesystem_name);
else
log_out(ctx, _("%s is in use.\n"), ctx->filesystem_name);
if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
puts("\007\007\007\007");
log_out(ctx, "%s", _("\n\nWARNING!!! "
"The filesystem is mounted. "
"If you continue you ***WILL***\n"
"cause ***SEVERE*** filesystem damage.\n\n"));
puts("\007\007\007");
cont = ask_yn(ctx, _("Do you really want to continue"), 0);
if (!cont) {
printf("%s", _("check aborted.\n"));
exit (0);
}
return;
}
static int is_on_batt(void)
{
FILE *f;
DIR *d;
char tmp[80], tmp2[80], fname[80];
unsigned int acflag;
struct dirent* de;
f = fopen("/sys/class/power_supply/AC/online", "r");
if (f) {
if (fscanf(f, "%u\n", &acflag) == 1) {
fclose(f);
return (!acflag);
}
fclose(f);
}
f = fopen("/proc/apm", "r");
if (f) {
if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
acflag = 1;
fclose(f);
return (acflag != 1);
}
d = opendir("/proc/acpi/ac_adapter");
if (d) {
while ((de=readdir(d)) != NULL) {
if (!strncmp(".", de->d_name, 1))
continue;
snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state",
de->d_name);
f = fopen(fname, "r");
if (!f)
continue;
if (fscanf(f, "%s %s", tmp2, tmp) != 2)
tmp[0] = 0;
fclose(f);
if (strncmp(tmp, "off-line", 8) == 0) {
closedir(d);
return 1;
}
}
closedir(d);
}
return 0;
}
/*
* This routine checks to see if a filesystem can be skipped; if so,
* it will exit with E2FSCK_OK. Under some conditions it will print a
* message explaining why a check is being forced.
*/
static void check_if_skip(e2fsck_t ctx)
{
ext2_filsys fs = ctx->fs;
struct problem_context pctx;
const char *reason = NULL;
unsigned int reason_arg = 0;
long next_check;
int batt = is_on_batt();
int defer_check_on_battery;
int broken_system_clock;
time_t lastcheck;
if (ctx->flags & E2F_FLAG_PROBLEMS_FIXED)
return;
profile_get_boolean(ctx->profile, "options", "broken_system_clock",
0, 0, &broken_system_clock);
if (ctx->flags & E2F_FLAG_TIME_INSANE)
broken_system_clock = 1;
profile_get_boolean(ctx->profile, "options",
"defer_check_on_battery", 0, 1,
&defer_check_on_battery);
if (!defer_check_on_battery)
batt = 0;
if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
return;
if (ctx->options & E2F_OPT_JOURNAL_ONLY)
goto skip;
lastcheck = fs->super->s_lastcheck;
if (lastcheck > ctx->now)
lastcheck -= ctx->time_fudge;
if ((fs->super->s_state & EXT2_ERROR_FS) ||
!ext2fs_test_valid(fs))
reason = _(" contains a file system with errors");
else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
reason = _(" was not cleanly unmounted");
else if (check_backup_super_block(ctx))
reason = _(" primary superblock features different from backup");
else if ((fs->super->s_max_mnt_count > 0) &&
(fs->super->s_mnt_count >=
(unsigned) fs->super->s_max_mnt_count)) {
reason = _(" has been mounted %u times without being checked");
reason_arg = fs->super->s_mnt_count;
if (batt && (fs->super->s_mnt_count <
(unsigned) fs->super->s_max_mnt_count*2))
reason = 0;
} else if (!broken_system_clock && fs->super->s_checkinterval &&
(ctx->now < lastcheck)) {
reason = _(" has filesystem last checked time in the future");
if (batt)
reason = 0;
} else if (!broken_system_clock && fs->super->s_checkinterval &&
((ctx->now - lastcheck) >=
((time_t) fs->super->s_checkinterval))) {
reason = _(" has gone %u days without being checked");
reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
if (batt && ((ctx->now - fs->super->s_lastcheck) <
fs->super->s_checkinterval*2))
reason = 0;
}
if (reason) {
log_out(ctx, "%s", ctx->device_name);
log_out(ctx, reason, reason_arg);
log_out(ctx, "%s", _(", check forced.\n"));
return;
}
/*
* Update the global counts from the block group counts. This
* is needed since modern kernels don't update the global
* counts so as to avoid locking the entire file system. So
* if the filesystem is not unmounted cleanly, the global
* counts may not be accurate. Update them here if we can,
* for the benefit of users who might examine the file system
* using dumpe2fs. (This is for cosmetic reasons only.)
*/
clear_problem_context(&pctx);
pctx.ino = fs->super->s_free_inodes_count;
pctx.ino2 = ctx->free_inodes;
if ((pctx.ino != pctx.ino2) &&
!(ctx->options & E2F_OPT_READONLY) &&
fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
fs->super->s_free_inodes_count = ctx->free_inodes;
ext2fs_mark_super_dirty(fs);
}
clear_problem_context(&pctx);
pctx.blk = ext2fs_free_blocks_count(fs->super);
pctx.blk2 = ctx->free_blocks;
if ((pctx.blk != pctx.blk2) &&
!(ctx->options & E2F_OPT_READONLY) &&
fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
ext2fs_mark_super_dirty(fs);
}
/* Print the summary message when we're skipping a full check */
log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
ctx->device_name,
fs->super->s_inodes_count - fs->super->s_free_inodes_count,
fs->super->s_inodes_count,
ext2fs_blocks_count(fs->super) -
ext2fs_free_blocks_count(fs->super),
ext2fs_blocks_count(fs->super));
next_check = 100000;
if (fs->super->s_max_mnt_count > 0) {
next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
if (next_check <= 0)
next_check = 1;
}
if (!broken_system_clock && fs->super->s_checkinterval &&
((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
next_check = 1;
if (next_check <= 5) {
if (next_check == 1) {
if (batt)
log_out(ctx, "%s",
_(" (check deferred; on battery)"));
else
log_out(ctx, "%s",
_(" (check after next mount)"));
} else
log_out(ctx, _(" (check in %ld mounts)"),
next_check);
}
log_out(ctx, "\n");
skip:
ext2fs_close_free(&ctx->fs);
e2fsck_free_context(ctx);
exit(FSCK_OK);
}
/*
* For completion notice
*/
struct percent_tbl {
int max_pass;
int table[32];
};
static struct percent_tbl e2fsck_tbl = {
5, { 0, 70, 90, 92, 95, 100 }
};
static char bar[128], spaces[128];
static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
int max)
{
float percent;
if (pass <= 0)
return 0.0;
if (pass > tbl->max_pass || max == 0)
return 100.0;
percent = ((float) curr) / ((float) max);
return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
+ tbl->table[pass-1]);
}
void e2fsck_clear_progbar(e2fsck_t ctx)
{
if (!(ctx->flags & E2F_FLAG_PROG_BAR))
return;
printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
ctx->stop_meta);
fflush(stdout);
ctx->flags &= ~E2F_FLAG_PROG_BAR;
}
int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
unsigned int dpynum)
{
static const char spinner[] = "\\|/-";
int i;
unsigned int tick;
struct timeval tv;
int dpywidth;
int fixed_percent;
if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
return 0;
/*
* Calculate the new progress position. If the
* percentage hasn't changed, then we skip out right
* away.
*/
fixed_percent = (int) ((10 * percent) + 0.5);
if (ctx->progress_last_percent == fixed_percent)
return 0;
ctx->progress_last_percent = fixed_percent;
/*
* If we've already updated the spinner once within
* the last 1/8th of a second, no point doing it
* again.
*/
gettimeofday(&tv, NULL);
tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
if ((tick == ctx->progress_last_time) &&
(fixed_percent != 0) && (fixed_percent != 1000))
return 0;
ctx->progress_last_time = tick;
/*
* Advance the spinner, and note that the progress bar
* will be on the screen
*/
ctx->progress_pos = (ctx->progress_pos+1) & 3;
ctx->flags |= E2F_FLAG_PROG_BAR;
dpywidth = 66 - strlen(label);
dpywidth = 8 * (dpywidth / 8);
if (dpynum)
dpywidth -= 8;
i = ((percent * dpywidth) + 50) / 100;
printf("%s%s: |%s%s", ctx->start_meta, label,
bar + (sizeof(bar) - (i+1)),
spaces + (sizeof(spaces) - (dpywidth - i + 1)));
if (fixed_percent == 1000)
fputc('|', stdout);
else
fputc(spinner[ctx->progress_pos & 3], stdout);
printf(" %4.1f%% ", percent);
if (dpynum)
printf("%u\r", dpynum);
else
fputs(" \r", stdout);
fputs(ctx->stop_meta, stdout);
if (fixed_percent == 1000)
e2fsck_clear_progbar(ctx);
fflush(stdout);
return 0;
}
static int e2fsck_update_progress(e2fsck_t ctx, int pass,
unsigned long cur, unsigned long max)
{
char buf[1024];
float percent;
if (pass == 0)
return 0;
if (ctx->progress_fd) {
snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
pass, cur, max, ctx->device_name);
write_all(ctx->progress_fd, buf, strlen(buf));
} else {
percent = calc_percent(&e2fsck_tbl, pass, cur, max);
e2fsck_simple_progress(ctx, ctx->device_name,
percent, 0);
}
return 0;
}
#define PATH_SET "PATH=/sbin"
/*
* Make sure 0,1,2 file descriptors are open, so that we don't open
* the filesystem using the same file descriptor as stdout or stderr.
*/
static void reserve_stdio_fds(void)
{
int fd = 0;
while (fd <= 2) {
fd = open("/dev/null", O_RDWR);
if (fd < 0) {
fprintf(stderr, _("ERROR: Couldn't open "
"/dev/null (%s)\n"),
strerror(errno));
break;
}
}
}
#ifdef HAVE_SIGNAL_H
static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
{
e2fsck_t ctx = e2fsck_global_ctx;
if (!ctx)
return;
ctx->progress = e2fsck_update_progress;
}
static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
{
e2fsck_t ctx = e2fsck_global_ctx;
if (!ctx)
return;
e2fsck_clear_progbar(ctx);
ctx->progress = 0;
}
static void signal_cancel(int sig EXT2FS_ATTR((unused)))
{
e2fsck_t ctx = e2fsck_global_ctx;
if (!ctx)
exit(FSCK_CANCELED);
ctx->flags |= E2F_FLAG_CANCEL;
}
#endif
static void parse_extended_opts(e2fsck_t ctx, const char *opts)
{
char *buf, *token, *next, *p, *arg;
int ea_ver;
int extended_usage = 0;
unsigned long long reada_kb;
buf = string_copy(ctx, opts, 0);
for (token = buf; token && *token; token = next) {
p = strchr(token, ',');
next = 0;
if (p) {
*p = 0;
next = p+1;
}
arg = strchr(token, '=');
if (arg) {
*arg = 0;
arg++;
}
if (strcmp(token, "ea_ver") == 0) {
if (!arg) {
extended_usage++;
continue;
}
ea_ver = strtoul(arg, &p, 0);
if (*p ||
((ea_ver != 1) && (ea_ver != 2))) {
fprintf(stderr, "%s",
_("Invalid EA version.\n"));
extended_usage++;
continue;
}
ctx->ext_attr_ver = ea_ver;
} else if (strcmp(token, "readahead_kb") == 0) {
if (!arg) {
extended_usage++;
continue;
}
reada_kb = strtoull(arg, &p, 0);
if (*p) {
fprintf(stderr, "%s",
_("Invalid readahead buffer size.\n"));
extended_usage++;
continue;
}
ctx->readahead_kb = reada_kb;
} else if (strcmp(token, "fragcheck") == 0) {
ctx->options |= E2F_OPT_FRAGCHECK;
continue;
} else if (strcmp(token, "journal_only") == 0) {
if (arg) {
extended_usage++;
continue;
}
ctx->options |= E2F_OPT_JOURNAL_ONLY;
} else if (strcmp(token, "discard") == 0) {
ctx->options |= E2F_OPT_DISCARD;
continue;
} else if (strcmp(token, "nodiscard") == 0) {
ctx->options &= ~E2F_OPT_DISCARD;
continue;
} else if (strcmp(token, "no_optimize_extents") == 0) {
ctx->options |= E2F_OPT_NOOPT_EXTENTS;
continue;
} else if (strcmp(token, "log_filename") == 0) {
if (!arg)
extended_usage++;
else
ctx->log_fn = string_copy(ctx, arg, 0);
continue;
} else if (strcmp(token, "bmap2extent") == 0) {
ctx->options |= E2F_OPT_CONVERT_BMAP;
continue;
} else if (strcmp(token, "fixes_only") == 0) {
ctx->options |= E2F_OPT_FIXES_ONLY;
continue;
} else {
fprintf(stderr, _("Unknown extended option: %s\n"),
token);
extended_usage++;
}
}
free(buf);
if (extended_usage) {
fputs(("\nExtended options are separated by commas, "
"and may take an argument which\n"
"is set off by an equals ('=') sign. "
"Valid extended options are:\n"), stderr);
fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
fputs(("\tfragcheck\n"), stderr);
fputs(("\tjournal_only\n"), stderr);
fputs(("\tdiscard\n"), stderr);
fputs(("\tnodiscard\n"), stderr);
fputs(("\treadahead_kb=<buffer size>\n"), stderr);
fputs(("\tbmap2extent\n"), stderr);
fputc('\n', stderr);
exit(1);
}
}
static void syntax_err_report(const char *filename, long err, int line_num)
{
fprintf(stderr,
_("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
filename, line_num, error_message(err));
exit(FSCK_ERROR);
}
static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
{
int flush = 0;
int c, fd;
#ifdef MTRACE
extern void *mallwatch;
#endif
e2fsck_t ctx;
errcode_t retval;
#ifdef HAVE_SIGNAL_H
struct sigaction sa;
#endif
char *extended_opts = 0;
char *cp;
int res; /* result of sscanf */
#ifdef CONFIG_JBD_DEBUG
char *jbd_debug;
#endif
unsigned long long phys_mem_kb;
retval = e2fsck_allocate_context(&ctx);
if (retval)
return retval;
*ret_ctx = ctx;
e2fsck_global_ctx = ctx;
setvbuf(stdout, NULL, _IONBF, BUFSIZ);
setvbuf(stderr, NULL, _IONBF, BUFSIZ);
if (getenv("E2FSCK_FORCE_INTERACTIVE") || (isatty(0) && isatty(1))) {
ctx->interactive = 1;
} else {
ctx->start_meta[0] = '\001';
ctx->stop_meta[0] = '\002';
}
memset(bar, '=', sizeof(bar)-1);
memset(spaces, ' ', sizeof(spaces)-1);
add_error_table(&et_ext2_error_table);
add_error_table(&et_prof_error_table);
blkid_get_cache(&ctx->blkid, NULL);
if (argc && *argv)
ctx->program_name = *argv;
else
ctx->program_name = "e2fsck";
phys_mem_kb = get_memory_size() / 1024;
ctx->readahead_kb = ~0ULL;
while ((c = getopt(argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDkz:")) != EOF)
switch (c) {
case 'C':
ctx->progress = e2fsck_update_progress;
res = sscanf(optarg, "%d", &ctx->progress_fd);
if (res != 1)
goto sscanf_err;
if (ctx->progress_fd < 0) {
ctx->progress = 0;
ctx->progress_fd = ctx->progress_fd * -1;
}
if (!ctx->progress_fd)
break;
/* Validate the file descriptor to avoid disasters */
fd = dup(ctx->progress_fd);
if (fd < 0) {
fprintf(stderr,
_("Error validating file descriptor %d: %s\n"),
ctx->progress_fd,
error_message(errno));
fatal_error(ctx,
_("Invalid completion information file descriptor"));
} else
close(fd);
break;
case 'D':
ctx->options |= E2F_OPT_COMPRESS_DIRS;
break;
case 'E':
extended_opts = optarg;
break;
case 'p':
case 'a':
if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
conflict_opt:
fatal_error(ctx,
_("Only one of the options -p/-a, -n or -y may be specified."));
}
ctx->options |= E2F_OPT_PREEN;
break;
case 'n':
if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
goto conflict_opt;
ctx->options |= E2F_OPT_NO;
break;
case 'y':
if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
goto conflict_opt;
ctx->options |= E2F_OPT_YES;
break;
case 't':
#ifdef RESOURCE_TRACK
if (ctx->options & E2F_OPT_TIME)
ctx->options |= E2F_OPT_TIME2;
else
ctx->options |= E2F_OPT_TIME;
#else
fprintf(stderr, _("The -t option is not "
"supported on this version of e2fsck.\n"));
#endif
break;
case 'c':
if (cflag++)
ctx->options |= E2F_OPT_WRITECHECK;
ctx->options |= E2F_OPT_CHECKBLOCKS;
break;
case 'r':
/* What we do by default, anyway! */
break;
case 'b':
res = sscanf(optarg, "%llu", &ctx->use_superblock);
if (res != 1)
goto sscanf_err;
ctx->flags |= E2F_FLAG_SB_SPECIFIED;
break;
case 'B':
ctx->blocksize = atoi(optarg);
break;
case 'I':
res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
if (res != 1)
goto sscanf_err;
break;
case 'j':
ctx->journal_name = blkid_get_devname(ctx->blkid,
optarg, NULL);
if (!ctx->journal_name) {
com_err(ctx->program_name, 0,
_("Unable to resolve '%s'"),
optarg);
fatal_error(ctx, 0);
}
break;
case 'P':
res = sscanf(optarg, "%d", &ctx->process_inode_size);
if (res != 1)
goto sscanf_err;
break;
case 'L':
replace_bad_blocks++;
case 'l':
if (bad_blocks_file)
free(bad_blocks_file);
bad_blocks_file = string_copy(ctx, optarg, 0);
break;
case 'd':
ctx->options |= E2F_OPT_DEBUG;
break;
case 'f':
ctx->options |= E2F_OPT_FORCE;
break;
case 'F':
flush = 1;
break;
case 'v':
verbose = 1;
break;
case 'V':
show_version_only = 1;
break;
#ifdef MTRACE
case 'M':
mallwatch = (void *) strtol(optarg, NULL, 0);
break;
#endif
case 'N':
ctx->device_name = string_copy(ctx, optarg, 0);
break;
case 'k':
keep_bad_blocks++;
break;
case 'z':
ctx->undo_file = optarg;
break;
default:
usage(ctx);
}
if (show_version_only)
return 0;
if (optind != argc - 1)
usage(ctx);
if ((ctx->options & E2F_OPT_NO) &&
(ctx->options & E2F_OPT_COMPRESS_DIRS)) {
com_err(ctx->program_name, 0, "%s",
_("The -n and -D options are incompatible."));
fatal_error(ctx, 0);
}
if ((ctx->options & E2F_OPT_NO) && cflag) {
com_err(ctx->program_name, 0, "%s",
_("The -n and -c options are incompatible."));
fatal_error(ctx, 0);
}
if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
com_err(ctx->program_name, 0, "%s",
_("The -n and -l/-L options are incompatible."));
fatal_error(ctx, 0);
}
if (ctx->options & E2F_OPT_NO)
ctx->options |= E2F_OPT_READONLY;
ctx->io_options = strchr(argv[optind], '?');
if (ctx->io_options)
*ctx->io_options++ = 0;
ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
if (!ctx->filesystem_name) {
com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
argv[optind]);
fatal_error(ctx, 0);
}
if (extended_opts)
parse_extended_opts(ctx, extended_opts);
/* Complain about mutually exclusive rebuilding activities */
if (getenv("E2FSCK_FIXES_ONLY"))
ctx->options |= E2F_OPT_FIXES_ONLY;
if ((ctx->options & E2F_OPT_COMPRESS_DIRS) &&
(ctx->options & E2F_OPT_FIXES_ONLY)) {
com_err(ctx->program_name, 0, "%s",
_("The -D and -E fixes_only options are incompatible."));
fatal_error(ctx, 0);
}
if ((ctx->options & E2F_OPT_CONVERT_BMAP) &&
(ctx->options & E2F_OPT_FIXES_ONLY)) {
com_err(ctx->program_name, 0, "%s",
_("The -E bmap2extent and fixes_only options are incompatible."));
fatal_error(ctx, 0);
}
if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
config_fn[0] = cp;
profile_set_syntax_err_cb(syntax_err_report);
profile_init(config_fn, &ctx->profile);
profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
&c);
if (c)
ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
&c);
if (c)
verbose = 1;
profile_get_boolean(ctx->profile, "options", "no_optimize_extents",
0, 0, &c);
if (c)
ctx->options |= E2F_OPT_NOOPT_EXTENTS;
if (ctx->readahead_kb == ~0ULL) {
profile_get_integer(ctx->profile, "options",
"readahead_mem_pct", 0, -1, &c);
if (c >= 0 && c <= 100)
ctx->readahead_kb = phys_mem_kb * c / 100;
profile_get_integer(ctx->profile, "options",
"readahead_kb", 0, -1, &c);
if (c >= 0)
ctx->readahead_kb = c;
if (ctx->readahead_kb != ~0ULL &&
ctx->readahead_kb > phys_mem_kb)
ctx->readahead_kb = phys_mem_kb;
}
/* Turn off discard in read-only mode */
if ((ctx->options & E2F_OPT_NO) &&
(ctx->options & E2F_OPT_DISCARD))
ctx->options &= ~E2F_OPT_DISCARD;
if (flush) {
fd = open(ctx->filesystem_name, O_RDONLY, 0);
if (fd < 0) {
com_err("open", errno,
_("while opening %s for flushing"),
ctx->filesystem_name);
fatal_error(ctx, 0);
}
if ((retval = ext2fs_sync_device(fd, 1))) {
com_err("ext2fs_sync_device", retval,
_("while trying to flush %s"),
ctx->filesystem_name);
fatal_error(ctx, 0);
}
close(fd);
}
if (cflag && bad_blocks_file) {
fprintf(stderr, "%s", _("The -c and the -l/-L options may not "
"be both used at the same time.\n"));
exit(FSCK_USAGE);
}
#ifdef HAVE_SIGNAL_H
/*
* Set up signal action
*/
memset(&sa, 0, sizeof(struct sigaction));
sa.sa_handler = signal_cancel;
sigaction(SIGINT, &sa, 0);
sigaction(SIGTERM, &sa, 0);
#ifdef SA_RESTART
sa.sa_flags = SA_RESTART;
#endif
sa.sa_handler = signal_progress_on;
sigaction(SIGUSR1, &sa, 0);
sa.sa_handler = signal_progress_off;
sigaction(SIGUSR2, &sa, 0);
#endif
/* Update our PATH to include /sbin if we need to run badblocks */
if (cflag) {
char *oldpath = getenv("PATH");
char *newpath;
int len = sizeof(PATH_SET) + 1;
if (oldpath)
len += strlen(oldpath);
newpath = malloc(len);
if (!newpath)
fatal_error(ctx, "Couldn't malloc() newpath");
strcpy(newpath, PATH_SET);
if (oldpath) {
strcat(newpath, ":");
strcat(newpath, oldpath);
}
putenv(newpath);
}
#ifdef CONFIG_JBD_DEBUG
jbd_debug = getenv("E2FSCK_JBD_DEBUG");
if (jbd_debug) {
res = sscanf(jbd_debug, "%d", &journal_enable_debug);
if (res != 1) {
fprintf(stderr,
_("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
jbd_debug);
exit (1);
}
}
#endif
return 0;
sscanf_err:
fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
c, optarg);
exit (1);
}
static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
ext2_filsys *ret_fs)
{
errcode_t retval;
*ret_fs = NULL;
if (ctx->superblock && ctx->blocksize) {
retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
flags, ctx->superblock, ctx->blocksize,
io_ptr, ret_fs);
} else if (ctx->superblock) {
int blocksize;
for (blocksize = EXT2_MIN_BLOCK_SIZE;
blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
if (*ret_fs) {
ext2fs_free(*ret_fs);
*ret_fs = NULL;
}
retval = ext2fs_open2(ctx->filesystem_name,
ctx->io_options, flags,
ctx->superblock, blocksize,
io_ptr, ret_fs);
if (!retval)
break;
}
} else
retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
flags, 0, 0, io_ptr, ret_fs);
if (retval == 0) {
(*ret_fs)->priv_data = ctx;
e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
"default", NULL);
}
return retval;
}
static const char *my_ver_string = E2FSPROGS_VERSION;
static const char *my_ver_date = E2FSPROGS_DATE;
static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
{
struct mmp_struct *mmp_s;
unsigned int mmp_check_interval;
errcode_t retval = 0;
struct problem_context pctx;
unsigned int wait_time = 0;
clear_problem_context(&pctx);
if (fs->mmp_buf == NULL) {
retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
if (retval)
goto check_error;
}
retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
if (retval)
goto check_error;
mmp_s = fs->mmp_buf;
mmp_check_interval = fs->super->s_mmp_update_interval;
if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
/*
* If check_interval in MMP block is larger, use that instead of
* check_interval from the superblock.
*/
if (mmp_s->mmp_check_interval > mmp_check_interval)
mmp_check_interval = mmp_s->mmp_check_interval;
wait_time = mmp_check_interval * 2 + 1;
if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
retval = 0;
else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
retval = EXT2_ET_MMP_FSCK_ON;
else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
retval = EXT2_ET_MMP_UNKNOWN_SEQ;
if (retval)
goto check_error;
/* Print warning if e2fck will wait for more than 20 secs. */
if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
log_out(ctx, _("MMP interval is %u seconds and total wait "
"time is %u seconds. Please wait...\n"),
mmp_check_interval, wait_time * 2);
}
return 0;
check_error:
if (retval == EXT2_ET_MMP_BAD_BLOCK) {
if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
fs->super->s_mmp_block = 0;
ext2fs_mark_super_dirty(fs);
retval = 0;
}
} else if (retval == EXT2_ET_MMP_FAILED) {
com_err(ctx->program_name, retval, "%s",
_("while checking MMP block"));
dump_mmp_msg(fs->mmp_buf, NULL);
} else if (retval == EXT2_ET_MMP_FSCK_ON ||
retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
com_err(ctx->program_name, retval, "%s",
_("while checking MMP block"));
dump_mmp_msg(fs->mmp_buf,
_("If you are sure the filesystem is not "
"in use on any node, run:\n"
"'tune2fs -f -E clear_mmp {device}'\n"));
} else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
ext2fs_mmp_clear(fs);
retval = 0;
}
} else if (retval == EXT2_ET_MMP_CSUM_INVALID) {
if (fix_problem(ctx, PR_0_MMP_CSUM_INVALID, &pctx)) {
ext2fs_mmp_clear(fs);
retval = 0;
}
} else
com_err(ctx->program_name, retval, "%s",
_("while reading MMP block"));
return retval;
}
static int e2fsck_setup_tdb(e2fsck_t ctx, io_manager *io_ptr)
{
errcode_t retval = ENOMEM;
char *tdb_dir = NULL, *tdb_file = NULL;
char *dev_name, *tmp_name;
int free_tdb_dir = 0;
/* (re)open a specific undo file */
if (ctx->undo_file && ctx->undo_file[0] != 0) {
retval = set_undo_io_backing_manager(*io_ptr);
if (retval)
goto err;
*io_ptr = undo_io_manager;
retval = set_undo_io_backup_file(ctx->undo_file);
if (retval)
goto err;
printf(_("Overwriting existing filesystem; this can be undone "
"using the command:\n"
" e2undo %s %s\n\n"),
ctx->undo_file, ctx->filesystem_name);
return retval;
}
/*
* Configuration via a conf file would be
* nice
*/
tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
if (!tdb_dir) {
profile_get_string(ctx->profile, "defaults",
"undo_dir", 0, "/var/lib/e2fsprogs",
&tdb_dir);
free_tdb_dir = 1;
}
if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
access(tdb_dir, W_OK)) {
if (free_tdb_dir)
free(tdb_dir);
return 0;
}
tmp_name = strdup(ctx->filesystem_name);
if (!tmp_name)
goto errout;
dev_name = basename(tmp_name);
tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(dev_name) + 7 + 1);
if (!tdb_file) {
free(tmp_name);
goto errout;
}
sprintf(tdb_file, "%s/e2fsck-%s.e2undo", tdb_dir, dev_name);
free(tmp_name);
if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
retval = errno;
com_err(ctx->program_name, retval,
_("while trying to delete %s"), tdb_file);
goto errout;
}
retval = set_undo_io_backing_manager(*io_ptr);
if (retval)
goto errout;
*io_ptr = undo_io_manager;
retval = set_undo_io_backup_file(tdb_file);
if (retval)
goto errout;
printf(_("Overwriting existing filesystem; this can be undone "
"using the command:\n"
" e2undo %s %s\n\n"), tdb_file, ctx->filesystem_name);
if (free_tdb_dir)
free(tdb_dir);
free(tdb_file);
return 0;
errout:
if (free_tdb_dir)
free(tdb_dir);
free(tdb_file);
err:
com_err(ctx->program_name, retval, "%s",
_("while trying to setup undo file\n"));
return retval;
}
int main (int argc, char *argv[])
{
errcode_t retval = 0, retval2 = 0, orig_retval = 0;
int exit_value = FSCK_OK;
ext2_filsys fs = 0;
io_manager io_ptr;
struct ext2_super_block *sb;
const char *lib_ver_date;
int my_ver, lib_ver;
e2fsck_t ctx;
blk64_t orig_superblock;
struct problem_context pctx;
int flags, run_result, was_changed;
int journal_size;
int sysval, sys_page_size = 4096;
int old_bitmaps;
__u32 features[3];
char *cp;
enum quota_type qtype;
clear_problem_context(&pctx);
sigcatcher_setup();
#ifdef MTRACE
mtrace();
#endif
#ifdef MCHECK
mcheck(0);
#endif
#ifdef ENABLE_NLS
setlocale(LC_MESSAGES, "");
setlocale(LC_CTYPE, "");
bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
textdomain(NLS_CAT_NAME);
set_com_err_gettext(gettext);
#endif
my_ver = ext2fs_parse_version_string(my_ver_string);
lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
if (my_ver > lib_ver) {
fprintf( stderr, "%s",
_("Error: ext2fs library version out of date!\n"));
show_version_only++;
}
retval = PRS(argc, argv, &ctx);
if (retval) {
com_err("e2fsck", retval, "%s",
_("while trying to initialize program"));
exit(FSCK_ERROR);
}
reserve_stdio_fds();
set_up_logging(ctx);
if (ctx->logf) {
int i;
fputs("E2fsck run: ", ctx->logf);
for (i = 0; i < argc; i++) {
if (i)
fputc(' ', ctx->logf);
fputs(argv[i], ctx->logf);
}
fputc('\n', ctx->logf);
}
init_resource_track(&ctx->global_rtrack, NULL);
if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
my_ver_date);
if (show_version_only) {
log_err(ctx, _("\tUsing %s, %s\n"),
error_message(EXT2_ET_BASE), lib_ver_date);
exit(FSCK_OK);
}
check_mount(ctx);
if (!(ctx->options & E2F_OPT_PREEN) &&
!(ctx->options & E2F_OPT_NO) &&
!(ctx->options & E2F_OPT_YES)) {
if (!ctx->interactive)
fatal_error(ctx,
_("need terminal for interactive repairs"));
}
ctx->superblock = ctx->use_superblock;
flags = EXT2_FLAG_SKIP_MMP;
restart:
#ifdef CONFIG_TESTIO_DEBUG
if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
io_ptr = test_io_manager;
test_io_backing_manager = unix_io_manager;
} else
#endif
io_ptr = unix_io_manager;
flags |= EXT2_FLAG_NOFREE_ON_ERROR;
profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
&old_bitmaps);
if (!old_bitmaps)
flags |= EXT2_FLAG_64BITS;
if ((ctx->options & E2F_OPT_READONLY) == 0) {
flags |= EXT2_FLAG_RW;
if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
ctx->mount_flags & EXT2_MF_READONLY))
flags |= EXT2_FLAG_EXCLUSIVE;
if ((ctx->mount_flags & EXT2_MF_READONLY) &&
(ctx->options & E2F_OPT_FORCE))
flags &= ~EXT2_FLAG_EXCLUSIVE;
}
if (ctx->undo_file) {
retval = e2fsck_setup_tdb(ctx, &io_ptr);
if (retval)
exit(FSCK_ERROR);
}
ctx->openfs_flags = flags;
retval = try_open_fs(ctx, flags, io_ptr, &fs);
if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
!(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
((retval == EXT2_ET_BAD_MAGIC) ||
(retval == EXT2_ET_SB_CSUM_INVALID) ||
(retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
}
if (retval2) {
pctx.errcode = retval2;
fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
}
pctx.errcode = 0;
if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
retval = retval2;
goto failure;
}
if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
ext2fs_free(fs);
fs = NULL;
}
if (!fs || (fs->group_desc_count > 1)) {
log_out(ctx, _("%s: %s trying backup blocks...\n"),
ctx->program_name,
retval ? _("Superblock invalid,") :
_("Group descriptors look bad..."));
orig_superblock = ctx->superblock;
get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
if (fs)
ext2fs_close_free(&fs);
orig_retval = retval;
retval = try_open_fs(ctx, flags, io_ptr, &fs);
if ((orig_retval == 0) && retval != 0) {
if (fs)
ext2fs_close_free(&fs);
log_out(ctx, _("%s: %s while using the "
"backup blocks"),
ctx->program_name,
error_message(retval));
log_out(ctx, _("%s: going back to original "
"superblock\n"),
ctx->program_name);
ctx->superblock = orig_superblock;
retval = try_open_fs(ctx, flags, io_ptr, &fs);
}
}
}
if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
(retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
fs && fs->super) {
sb = fs->super;
features[0] = (sb->s_feature_compat &
~EXT2_LIB_FEATURE_COMPAT_SUPP);
features[1] = (sb->s_feature_incompat &
~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
features[2] = (sb->s_feature_ro_compat &
~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
if (features[0] || features[1] || features[2])
goto print_unsupp_features;
}
failure:
if (retval) {
if (orig_retval)
retval = orig_retval;
com_err(ctx->program_name, retval, _("while trying to open %s"),
ctx->filesystem_name);
if (retval == EXT2_ET_REV_TOO_HIGH) {
log_out(ctx, "%s",
_("The filesystem revision is apparently "
"too high for this version of e2fsck.\n"
"(Or the filesystem superblock "
"is corrupt)\n\n"));
fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
} else if (retval == EXT2_ET_SHORT_READ)
log_out(ctx, "%s",
_("Could this be a zero-length partition?\n"));
else if ((retval == EPERM) || (retval == EACCES))
log_out(ctx, _("You must have %s access to the "
"filesystem or be root\n"),
(ctx->options & E2F_OPT_READONLY) ?
"r/o" : "r/w");
else if (retval == ENXIO)
log_out(ctx, "%s",
_("Possibly non-existent or swap device?\n"));
else if (retval == EBUSY)
log_out(ctx, "%s", _("Filesystem mounted or opened "
"exclusively by another program?\n"));
else if (retval == ENOENT)
log_out(ctx, "%s",
_("Possibly non-existent device?\n"));
#ifdef EROFS
else if (retval == EROFS)
log_out(ctx, "%s", _("Disk write-protected; use the "
"-n option to do a read-only\n"
"check of the device.\n"));
#endif
else {
fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
if (retval == EXT2_ET_BAD_MAGIC)
check_plausibility(ctx->filesystem_name,
CHECK_FS_EXIST, NULL);
}
fatal_error(ctx, 0);
}
/*
* We only update the master superblock because (a) paranoia;
* we don't want to corrupt the backup superblocks, and (b) we
* don't need to update the mount count and last checked
* fields in the backup superblock (the kernel doesn't update
* the backup superblocks anyway). With newer versions of the
* library this flag is set by ext2fs_open2(), but we set this
* here just to be sure. (No, we don't support e2fsck running
* with some other libext2fs than the one that it was shipped
* with, but just in case....)
*/
fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
__u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
int need_restart = 0;
pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
blocksize,
&ctx->num_blocks);
/*
* The floppy driver refuses to allow anyone else to
* open the device if has been opened with O_EXCL;
* this is unlike other block device drivers in Linux.
* To handle this, we close the filesystem and then
* reopen the filesystem after we get the device size.
*/
if (pctx.errcode == EBUSY) {
ext2fs_close_free(&fs);
need_restart++;
pctx.errcode =
ext2fs_get_device_size2(ctx->filesystem_name,
blocksize,
&ctx->num_blocks);
}
if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
ctx->num_blocks = 0;
else if (pctx.errcode) {
fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
fatal_error(ctx, 0);
}
ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
if (need_restart)
goto restart;
}
ctx->fs = fs;
fs->now = ctx->now;
sb = fs->super;
if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
_("while trying to open %s"),
ctx->filesystem_name);
get_newer:
fatal_error(ctx, _("Get a newer version of e2fsck!"));
}
/*
* Set the device name, which is used whenever we print error
* or informational messages to the user.
*/
if (ctx->device_name == 0 &&
(sb->s_volume_name[0] != 0)) {
ctx->device_name = string_copy(ctx, sb->s_volume_name,
sizeof(sb->s_volume_name));
}
if (ctx->device_name == 0)
ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
for (cp = ctx->device_name; *cp; cp++)
if (isspace(*cp) || *cp == ':')
*cp = '_';
ehandler_init(fs->io);
if (ext2fs_has_feature_mmp(fs->super) &&
(flags & EXT2_FLAG_SKIP_MMP)) {
if (e2fsck_check_mmp(fs, ctx))
fatal_error(ctx, 0);
/*
* Restart in order to reopen fs but this time start mmp.
*/
ext2fs_close_free(&ctx->fs);
flags &= ~EXT2_FLAG_SKIP_MMP;
goto restart;
}
if (ctx->logf)
fprintf(ctx->logf, "Filesystem UUID: %s\n",
e2p_uuid2str(sb->s_uuid));
/*
* Make sure the ext3 superblock fields are consistent.
*/
if ((ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY)) == 0) {
retval = e2fsck_check_ext3_journal(ctx);
if (retval) {
com_err(ctx->program_name, retval,
_("while checking journal for %s"),
ctx->device_name);
fatal_error(ctx,
_("Cannot proceed with file system check"));
}
}
/*
* Check to see if we need to do ext3-style recovery. If so,
* do it, and then restart the fsck.
*/
if (ext2fs_has_feature_journal_needs_recovery(sb)) {
if (ctx->options & E2F_OPT_READONLY) {
log_out(ctx, "%s",
_("Warning: skipping journal recovery because "
"doing a read-only filesystem check.\n"));
io_channel_flush(ctx->fs->io);
} else {
if (ctx->flags & E2F_FLAG_RESTARTED) {
/*
* Whoops, we attempted to run the
* journal twice. This should never
* happen, unless the hardware or
* device driver is being bogus.
*/
com_err(ctx->program_name, 0,
_("unable to set superblock flags "
"on %s\n"), ctx->device_name);
fatal_error(ctx, 0);
}
retval = e2fsck_run_ext3_journal(ctx);
if (retval == EFSBADCRC) {
log_out(ctx, _("Journal checksum error "
"found in %s\n"),
ctx->device_name);
} else if (retval == EFSCORRUPTED) {
log_out(ctx, _("Journal corrupted in %s\n"),
ctx->device_name);
} else if (retval) {
com_err(ctx->program_name, retval,
_("while recovering journal of %s"),
ctx->device_name);
}
ext2fs_close_free(&ctx->fs);
ctx->flags |= E2F_FLAG_RESTARTED;
goto restart;
}
}
/*
* Check for compatibility with the feature sets. We need to
* be more stringent than ext2fs_open().
*/
features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
features[2] = (sb->s_feature_ro_compat &
~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
print_unsupp_features:
if (features[0] || features[1] || features[2]) {
int i, j;
__u32 *mask = features, m;
log_err(ctx, _("%s has unsupported feature(s):"),
ctx->filesystem_name);
for (i=0; i <3; i++,mask++) {
for (j=0,m=1; j < 32; j++, m<<=1) {
if (*mask & m)
log_err(ctx, " %s",
e2p_feature2string(i, m));
}
}
log_err(ctx, "\n");
goto get_newer;
}
/*
* If the user specified a specific superblock, presumably the
* master superblock has been trashed. So we mark the
* superblock as dirty, so it can be written out.
*/
if (ctx->superblock &&
!(ctx->options & E2F_OPT_READONLY))
ext2fs_mark_super_dirty(fs);
/*
* Calculate the number of filesystem blocks per pagesize. If
* fs->blocksize > page_size, set the number of blocks per
* pagesize to 1 to avoid division by zero errors.
*/
#ifdef _SC_PAGESIZE
sysval = sysconf(_SC_PAGESIZE);
if (sysval > 0)
sys_page_size = sysval;
#endif /* _SC_PAGESIZE */
ctx->blocks_per_page = sys_page_size / fs->blocksize;
if (ctx->blocks_per_page == 0)
ctx->blocks_per_page = 1;
if (ctx->superblock)
set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
ext2fs_mark_valid(fs);
check_super_block(ctx);
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
fatal_error(ctx, 0);
check_if_skip(ctx);
check_resize_inode(ctx);
if (bad_blocks_file)
read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
else if (cflag)
read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
fatal_error(ctx, 0);
/*
* Mark the system as valid, 'til proven otherwise
*/
ext2fs_mark_valid(fs);
retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
if (retval) {
log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
ctx->program_name, error_message(retval));
preenhalt(ctx);
log_out(ctx, "%s", _("This doesn't bode well, "
"but we'll try to go on...\n"));
}
/*
* Save the journal size in megabytes.
* Try and use the journal size from the backup else let e2fsck
* find the default journal size.
*/
if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
(sb->s_jnl_blocks[16] >> 20);
else
journal_size = -1;
if (ext2fs_has_feature_quota(sb)) {
/* Quotas were enabled. Do quota accounting during fsck. */
clear_problem_context(&pctx);
pctx.errcode = quota_init_context(&ctx->qctx, ctx->fs, 0);
if (pctx.errcode) {
fix_problem(ctx, PR_0_QUOTA_INIT_CTX, &pctx);
fatal_error(ctx, 0);
}
}
run_result = e2fsck_run(ctx);
e2fsck_clear_progbar(ctx);
if (!ctx->invalid_bitmaps &&
(ctx->flags & E2F_FLAG_JOURNAL_INODE)) {
if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
if (journal_size < 1024)
journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
if (journal_size < 0) {
ext2fs_clear_feature_journal(fs->super);
fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
log_out(ctx, "%s: Couldn't determine "
"journal size\n", ctx->program_name);
goto no_journal;
}
log_out(ctx, _("Creating journal (%d blocks): "),
journal_size);
fflush(stdout);
retval = ext2fs_add_journal_inode(fs,
journal_size, 0);
if (retval) {
log_out(ctx, "%s: while trying to create "
"journal\n", error_message(retval));
goto no_journal;
}
log_out(ctx, "%s", _(" Done.\n"));
log_out(ctx, "%s",
_("\n*** journal has been regenerated ***\n"));
}
}
no_journal:
if (run_result & E2F_FLAG_ABORT) {
fatal_error(ctx, _("aborted"));
} else if (run_result & E2F_FLAG_CANCEL) {
log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
ctx->device_name : ctx->filesystem_name);
exit_value |= FSCK_CANCELED;
} else if (ctx->qctx && !ctx->invalid_bitmaps) {
int needs_writeout;
for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
if (*quota_sb_inump(sb, qtype) == 0)
continue;
needs_writeout = 0;
pctx.num = qtype;
retval = quota_compare_and_update(ctx->qctx, qtype,
&needs_writeout);
if ((retval || needs_writeout) &&
fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx)) {
pctx.errcode = quota_write_inode(ctx->qctx,
1 << qtype);
if (pctx.errcode)
(void) fix_problem(ctx,
PR_6_WRITE_QUOTAS, &pctx);
}
}
quota_release_context(&ctx->qctx);
}
if (run_result == E2F_FLAG_RESTART) {
log_out(ctx, "%s",
_("Restarting e2fsck from the beginning...\n"));
retval = e2fsck_reset_context(ctx);
if (retval) {
com_err(ctx->program_name, retval, "%s",
_("while resetting context"));
fatal_error(ctx, 0);
}
ext2fs_close_free(&ctx->fs);
goto restart;
}
#ifdef MTRACE
mtrace_print("Cleanup");
#endif
was_changed = ext2fs_test_changed(fs);
if (!(ctx->flags & E2F_FLAG_RUN_RETURN) &&
!(ctx->options & E2F_OPT_READONLY)) {
if (ext2fs_test_valid(fs)) {
if (!(sb->s_state & EXT2_VALID_FS))
exit_value |= FSCK_NONDESTRUCT;
sb->s_state = EXT2_VALID_FS;
if (check_backup_super_block(ctx))
fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
} else
sb->s_state &= ~EXT2_VALID_FS;
if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
sb->s_lastcheck = ctx->now;
sb->s_mnt_count = 0;
memset(((char *) sb) + EXT4_S_ERR_START, 0, EXT4_S_ERR_LEN);
pctx.errcode = ext2fs_set_gdt_csum(ctx->fs);
if (pctx.errcode)
fix_problem(ctx, PR_6_SET_BG_CHECKSUM, &pctx);
ext2fs_mark_super_dirty(fs);
}
e2fsck_write_bitmaps(ctx);
if (fs->flags & EXT2_FLAG_DIRTY) {
pctx.errcode = ext2fs_flush(ctx->fs);
if (pctx.errcode)
fix_problem(ctx, PR_6_FLUSH_FILESYSTEM, &pctx);
}
pctx.errcode = io_channel_flush(ctx->fs->io);
if (pctx.errcode)
fix_problem(ctx, PR_6_IO_FLUSH, &pctx);
if (was_changed) {
int fs_fixed = (ctx->flags & E2F_FLAG_PROBLEMS_FIXED);
if (fs_fixed)
exit_value |= FSCK_NONDESTRUCT;
if (!(ctx->options & E2F_OPT_PREEN)) {
#if 0 /* Do this later; it breaks too many tests' golden outputs */
log_out(ctx, fs_fixed ?
_("\n%s: ***** FILE SYSTEM ERRORS "
"CORRECTED *****\n") :
_("%s: File system was modified.\n"),
ctx->device_name);
#else
log_out(ctx,
_("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
ctx->device_name);
#endif
}
if (ctx->mount_flags & EXT2_MF_ISROOT) {
log_out(ctx, _("%s: ***** REBOOT SYSTEM *****\n"),
ctx->device_name);
exit_value |= FSCK_REBOOT;
}
}
if (!ext2fs_test_valid(fs) ||
((exit_value & FSCK_CANCELED) &&
(sb->s_state & EXT2_ERROR_FS))) {
log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
"errors **********\n\n"), ctx->device_name);
exit_value |= FSCK_UNCORRECTED;
exit_value &= ~FSCK_NONDESTRUCT;
}
if (exit_value & FSCK_CANCELED) {
int allow_cancellation;
profile_get_boolean(ctx->profile, "options",
"allow_cancellation", 0, 0,
&allow_cancellation);
exit_value &= ~FSCK_NONDESTRUCT;
if (allow_cancellation && ext2fs_test_valid(fs) &&
(sb->s_state & EXT2_VALID_FS) &&
!(sb->s_state & EXT2_ERROR_FS))
exit_value = 0;
} else
show_stats(ctx);
print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
ext2fs_close_free(&ctx->fs);
free(ctx->journal_name);
if (ctx->logf)
fprintf(ctx->logf, "Exit status: %d\n", exit_value);
e2fsck_free_context(ctx);
remove_error_table(&et_ext2_error_table);
remove_error_table(&et_prof_error_table);
return exit_value;
}
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