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      1 /*
      2  * tune2fs.c - Change the file system parameters on an ext2 file system
      3  *
      4  * Copyright (C) 1992, 1993, 1994  Remy Card <card (at) masi.ibp.fr>
      5  *                                 Laboratoire MASI, Institut Blaise Pascal
      6  *                                 Universite Pierre et Marie Curie (Paris VI)
      7  *
      8  * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
      9  *
     10  * %Begin-Header%
     11  * This file may be redistributed under the terms of the GNU Public
     12  * License.
     13  * %End-Header%
     14  */
     15 
     16 /*
     17  * History:
     18  * 93/06/01	- Creation
     19  * 93/10/31	- Added the -c option to change the maximal mount counts
     20  * 93/12/14	- Added -l flag to list contents of superblock
     21  *                M.J.E. Mol (marcel (at) duteca.et.tudelft.nl)
     22  *                F.W. ten Wolde (franky (at) duteca.et.tudelft.nl)
     23  * 93/12/29	- Added the -e option to change errors behavior
     24  * 94/02/27	- Ported to use the ext2fs library
     25  * 94/03/06	- Added the checks interval from Uwe Ohse (uwe (at) tirka.gun.de)
     26  */
     27 
     28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
     29 #include <fcntl.h>
     30 #include <grp.h>
     31 #ifdef HAVE_GETOPT_H
     32 #include <getopt.h>
     33 #else
     34 extern char *optarg;
     35 extern int optind;
     36 #endif
     37 #include <pwd.h>
     38 #include <stdio.h>
     39 #ifdef HAVE_STDLIB_H
     40 #include <stdlib.h>
     41 #endif
     42 #ifdef HAVE_STRINGS_H
     43 #include <strings.h>	/* for strcasecmp() */
     44 #else
     45 #define _BSD_SOURCE	/* for inclusion of strcasecmp() via <string.h> */
     46 #endif
     47 #include <string.h>
     48 #include <time.h>
     49 #include <unistd.h>
     50 #include <sys/types.h>
     51 #include <libgen.h>
     52 #include <limits.h>
     53 
     54 #include "ext2fs/ext2_fs.h"
     55 #include "ext2fs/ext2fs.h"
     56 #include "et/com_err.h"
     57 #include "uuid/uuid.h"
     58 #include "e2p/e2p.h"
     59 #include "jfs_user.h"
     60 #include "util.h"
     61 #include "blkid/blkid.h"
     62 #include "quota/mkquota.h"
     63 
     64 #include "../version.h"
     65 #include "nls-enable.h"
     66 
     67 #define QOPT_ENABLE	(1)
     68 #define QOPT_DISABLE	(-1)
     69 
     70 extern int ask_yn(const char *string, int def);
     71 
     72 const char *program_name = "tune2fs";
     73 char *device_name;
     74 char *new_label, *new_last_mounted, *new_UUID;
     75 char *io_options;
     76 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
     77 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
     78 static int I_flag;
     79 static int clear_mmp;
     80 static time_t last_check_time;
     81 static int print_label;
     82 static int max_mount_count, mount_count, mount_flags;
     83 static unsigned long interval;
     84 static blk64_t reserved_blocks;
     85 static double reserved_ratio;
     86 static unsigned long resgid, resuid;
     87 static unsigned short errors;
     88 static int open_flag;
     89 static char *features_cmd;
     90 static char *mntopts_cmd;
     91 static int stride, stripe_width;
     92 static int stride_set, stripe_width_set;
     93 static char *extended_cmd;
     94 static unsigned long new_inode_size;
     95 static char *ext_mount_opts;
     96 static int usrquota, grpquota;
     97 
     98 int journal_size, journal_flags;
     99 char *journal_device;
    100 
    101 static struct list_head blk_move_list;
    102 
    103 struct blk_move {
    104 	struct list_head list;
    105 	blk64_t old_loc;
    106 	blk64_t new_loc;
    107 };
    108 
    109 
    110 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
    111 
    112 #ifdef CONFIG_BUILD_FINDFS
    113 void do_findfs(int argc, char **argv);
    114 #endif
    115 
    116 static void usage(void)
    117 {
    118 	fprintf(stderr,
    119 		_("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
    120 		  "[-g group]\n"
    121 		  "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
    122 		  "\t[-m reserved_blocks_percent] "
    123 		  "[-o [^]mount_options[,...]] [-p mmp_update_interval]\n"
    124 		  "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
    125 		  "[-L volume_label]\n"
    126 		  "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
    127 #ifdef CONFIG_QUOTA
    128 		  "\t[-Q quota_options]\n"
    129 #endif
    130 		  "\t[-E extended-option[,...]] [-T last_check_time] "
    131 		  "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
    132 	exit(1);
    133 }
    134 
    135 static __u32 ok_features[3] = {
    136 	/* Compat */
    137 	EXT3_FEATURE_COMPAT_HAS_JOURNAL |
    138 		EXT2_FEATURE_COMPAT_DIR_INDEX,
    139 	/* Incompat */
    140 	EXT2_FEATURE_INCOMPAT_FILETYPE |
    141 		EXT3_FEATURE_INCOMPAT_EXTENTS |
    142 		EXT4_FEATURE_INCOMPAT_FLEX_BG |
    143 		EXT4_FEATURE_INCOMPAT_MMP,
    144 	/* R/O compat */
    145 	EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
    146 		EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
    147 		EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
    148 		EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
    149 		EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
    150 #ifdef CONFIG_QUOTA
    151 		EXT4_FEATURE_RO_COMPAT_QUOTA |
    152 #endif
    153 		EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
    154 };
    155 
    156 static __u32 clear_ok_features[3] = {
    157 	/* Compat */
    158 	EXT3_FEATURE_COMPAT_HAS_JOURNAL |
    159 		EXT2_FEATURE_COMPAT_RESIZE_INODE |
    160 		EXT2_FEATURE_COMPAT_DIR_INDEX,
    161 	/* Incompat */
    162 	EXT2_FEATURE_INCOMPAT_FILETYPE |
    163 		EXT4_FEATURE_INCOMPAT_FLEX_BG |
    164 		EXT4_FEATURE_INCOMPAT_MMP,
    165 	/* R/O compat */
    166 	EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
    167 		EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
    168 		EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
    169 		EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
    170 #ifdef CONFIG_QUOTA
    171 		EXT4_FEATURE_RO_COMPAT_QUOTA |
    172 #endif
    173 		EXT4_FEATURE_RO_COMPAT_GDT_CSUM
    174 };
    175 
    176 /*
    177  * Remove an external journal from the filesystem
    178  */
    179 static int remove_journal_device(ext2_filsys fs)
    180 {
    181 	char		*journal_path;
    182 	ext2_filsys	jfs;
    183 	char		buf[1024];
    184 	journal_superblock_t	*jsb;
    185 	int		i, nr_users;
    186 	errcode_t	retval;
    187 	int		commit_remove_journal = 0;
    188 	io_manager	io_ptr;
    189 
    190 	if (f_flag)
    191 		commit_remove_journal = 1; /* force removal even if error */
    192 
    193 	uuid_unparse(fs->super->s_journal_uuid, buf);
    194 	journal_path = blkid_get_devname(NULL, "UUID", buf);
    195 
    196 	if (!journal_path) {
    197 		journal_path =
    198 			ext2fs_find_block_device(fs->super->s_journal_dev);
    199 		if (!journal_path)
    200 			goto no_valid_journal;
    201 	}
    202 
    203 #ifdef CONFIG_TESTIO_DEBUG
    204 	if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
    205 		io_ptr = test_io_manager;
    206 		test_io_backing_manager = unix_io_manager;
    207 	} else
    208 #endif
    209 		io_ptr = unix_io_manager;
    210 	retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
    211 			     EXT2_FLAG_JOURNAL_DEV_OK, 0,
    212 			     fs->blocksize, io_ptr, &jfs);
    213 	if (retval) {
    214 		com_err(program_name, retval, "%s",
    215 			_("while trying to open external journal"));
    216 		goto no_valid_journal;
    217 	}
    218 	if (!(jfs->super->s_feature_incompat &
    219 	      EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
    220 		fprintf(stderr, _("%s is not a journal device.\n"),
    221 			journal_path);
    222 		goto no_valid_journal;
    223 	}
    224 
    225 	/* Get the journal superblock */
    226 	if ((retval = io_channel_read_blk64(jfs->io, 1, -1024, buf))) {
    227 		com_err(program_name, retval, "%s",
    228 			_("while reading journal superblock"));
    229 		goto no_valid_journal;
    230 	}
    231 
    232 	jsb = (journal_superblock_t *) buf;
    233 	if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
    234 	    (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
    235 		fputs(_("Journal superblock not found!\n"), stderr);
    236 		goto no_valid_journal;
    237 	}
    238 
    239 	/* Find the filesystem UUID */
    240 	nr_users = ntohl(jsb->s_nr_users);
    241 	for (i = 0; i < nr_users; i++) {
    242 		if (memcmp(fs->super->s_uuid, &jsb->s_users[i * 16], 16) == 0)
    243 			break;
    244 	}
    245 	if (i >= nr_users) {
    246 		fputs(_("Filesystem's UUID not found on journal device.\n"),
    247 		      stderr);
    248 		commit_remove_journal = 1;
    249 		goto no_valid_journal;
    250 	}
    251 	nr_users--;
    252 	for (i = 0; i < nr_users; i++)
    253 		memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
    254 	jsb->s_nr_users = htonl(nr_users);
    255 
    256 	/* Write back the journal superblock */
    257 	if ((retval = io_channel_write_blk64(jfs->io, 1, -1024, buf))) {
    258 		com_err(program_name, retval,
    259 			"while writing journal superblock.");
    260 		goto no_valid_journal;
    261 	}
    262 
    263 	commit_remove_journal = 1;
    264 
    265 no_valid_journal:
    266 	if (commit_remove_journal == 0) {
    267 		fputs(_("Cannot locate journal device. It was NOT removed\n"
    268 			"Use -f option to remove missing journal device.\n"),
    269 		      stderr);
    270 		return 1;
    271 	}
    272 	fs->super->s_journal_dev = 0;
    273 	uuid_clear(fs->super->s_journal_uuid);
    274 	ext2fs_mark_super_dirty(fs);
    275 	fputs(_("Journal removed\n"), stdout);
    276 	free(journal_path);
    277 
    278 	return 0;
    279 }
    280 
    281 /* Helper function for remove_journal_inode */
    282 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
    283 			       e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
    284 			       blk64_t ref_block EXT2FS_ATTR((unused)),
    285 			       int ref_offset EXT2FS_ATTR((unused)),
    286 			       void *private EXT2FS_ATTR((unused)))
    287 {
    288 	blk64_t	block;
    289 	int	group;
    290 
    291 	block = *blocknr;
    292 	ext2fs_unmark_block_bitmap2(fs->block_map, block);
    293 	group = ext2fs_group_of_blk2(fs, block);
    294 	ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
    295 	ext2fs_group_desc_csum_set(fs, group);
    296 	ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
    297 	return 0;
    298 }
    299 
    300 /*
    301  * Remove the journal inode from the filesystem
    302  */
    303 static errcode_t remove_journal_inode(ext2_filsys fs)
    304 {
    305 	struct ext2_inode	inode;
    306 	errcode_t		retval;
    307 	ino_t			ino = fs->super->s_journal_inum;
    308 
    309 	retval = ext2fs_read_inode(fs, ino,  &inode);
    310 	if (retval) {
    311 		com_err(program_name, retval, "%s",
    312 			_("while reading journal inode"));
    313 		return retval;
    314 	}
    315 	if (ino == EXT2_JOURNAL_INO) {
    316 		retval = ext2fs_read_bitmaps(fs);
    317 		if (retval) {
    318 			com_err(program_name, retval, "%s",
    319 				_("while reading bitmaps"));
    320 			return retval;
    321 		}
    322 		retval = ext2fs_block_iterate3(fs, ino,
    323 					       BLOCK_FLAG_READ_ONLY, NULL,
    324 					       release_blocks_proc, NULL);
    325 		if (retval) {
    326 			com_err(program_name, retval, "%s",
    327 				_("while clearing journal inode"));
    328 			return retval;
    329 		}
    330 		memset(&inode, 0, sizeof(inode));
    331 		ext2fs_mark_bb_dirty(fs);
    332 		fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
    333 	} else
    334 		inode.i_flags &= ~EXT2_IMMUTABLE_FL;
    335 	retval = ext2fs_write_inode(fs, ino, &inode);
    336 	if (retval) {
    337 		com_err(program_name, retval, "%s",
    338 			_("while writing journal inode"));
    339 		return retval;
    340 	}
    341 	fs->super->s_journal_inum = 0;
    342 	ext2fs_mark_super_dirty(fs);
    343 
    344 	return 0;
    345 }
    346 
    347 /*
    348  * Update the default mount options
    349  */
    350 static int update_mntopts(ext2_filsys fs, char *mntopts)
    351 {
    352 	struct ext2_super_block *sb = fs->super;
    353 
    354 	if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
    355 		fprintf(stderr, _("Invalid mount option set: %s\n"),
    356 			mntopts);
    357 		return 1;
    358 	}
    359 	ext2fs_mark_super_dirty(fs);
    360 
    361 	return 0;
    362 }
    363 
    364 static int check_fsck_needed(ext2_filsys fs)
    365 {
    366 	if (fs->super->s_state & EXT2_VALID_FS)
    367 		return 0;
    368 	printf("\n%s\n", _(please_fsck));
    369 	if (mount_flags & EXT2_MF_READONLY)
    370 		printf(_("(and reboot afterwards!)\n"));
    371 	return 1;
    372 }
    373 
    374 static void request_fsck_afterwards(ext2_filsys fs)
    375 {
    376 	static int requested = 0;
    377 
    378 	if (requested++)
    379 		return;
    380 	fs->super->s_state &= ~EXT2_VALID_FS;
    381 	printf("\n%s\n", _(please_fsck));
    382 	if (mount_flags & EXT2_MF_READONLY)
    383 		printf("%s", _("(and reboot afterwards!)\n"));
    384 }
    385 
    386 /*
    387  * Update the feature set as provided by the user.
    388  */
    389 static int update_feature_set(ext2_filsys fs, char *features)
    390 {
    391 	struct ext2_super_block *sb = fs->super;
    392 	struct ext2_group_desc *gd;
    393 	__u32		old_features[3];
    394 	dgrp_t		i;
    395 	int		type_err;
    396 	unsigned int	mask_err;
    397 
    398 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
    399 				((&sb->s_feature_compat)[(type)] & (mask)))
    400 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
    401 				 !((&sb->s_feature_compat)[(type)] & (mask)))
    402 #define FEATURE_CHANGED(type, mask) ((mask) & \
    403 		     (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
    404 
    405 	old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
    406 	old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
    407 	old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
    408 
    409 	if (e2p_edit_feature2(features, &sb->s_feature_compat,
    410 			      ok_features, clear_ok_features,
    411 			      &type_err, &mask_err)) {
    412 		if (!mask_err)
    413 			fprintf(stderr,
    414 				_("Invalid filesystem option set: %s\n"),
    415 				features);
    416 		else if (type_err & E2P_FEATURE_NEGATE_FLAG)
    417 			fprintf(stderr, _("Clearing filesystem feature '%s' "
    418 					  "not supported.\n"),
    419 				e2p_feature2string(type_err &
    420 						   E2P_FEATURE_TYPE_MASK,
    421 						   mask_err));
    422 		else
    423 			fprintf(stderr, _("Setting filesystem feature '%s' "
    424 					  "not supported.\n"),
    425 				e2p_feature2string(type_err, mask_err));
    426 		return 1;
    427 	}
    428 
    429 	if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
    430 		if ((mount_flags & EXT2_MF_MOUNTED) &&
    431 		    !(mount_flags & EXT2_MF_READONLY)) {
    432 			fputs(_("The has_journal feature may only be "
    433 				"cleared when the filesystem is\n"
    434 				"unmounted or mounted "
    435 				"read-only.\n"), stderr);
    436 			return 1;
    437 		}
    438 		if (sb->s_feature_incompat &
    439 		    EXT3_FEATURE_INCOMPAT_RECOVER) {
    440 			fputs(_("The needs_recovery flag is set.  "
    441 				"Please run e2fsck before clearing\n"
    442 				"the has_journal flag.\n"), stderr);
    443 			return 1;
    444 		}
    445 		if (sb->s_journal_inum) {
    446 			if (remove_journal_inode(fs))
    447 				return 1;
    448 		}
    449 		if (sb->s_journal_dev) {
    450 			if (remove_journal_device(fs))
    451 				return 1;
    452 		}
    453 	}
    454 	if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
    455 		int error;
    456 
    457 		if ((mount_flags & EXT2_MF_MOUNTED) ||
    458 		    (mount_flags & EXT2_MF_READONLY)) {
    459 			fputs(_("The multiple mount protection feature can't\n"
    460 				"be set if the filesystem is mounted or\n"
    461 				"read-only.\n"), stderr);
    462 			return 1;
    463 		}
    464 
    465 		error = ext2fs_mmp_init(fs);
    466 		if (error) {
    467 			fputs(_("\nError while enabling multiple mount "
    468 				"protection feature."), stderr);
    469 			return 1;
    470 		}
    471 
    472 		/*
    473 		 * We want to update group desc with the new free blocks count
    474 		 */
    475 		fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
    476 
    477 		printf(_("Multiple mount protection has been enabled "
    478 			 "with update interval %ds.\n"),
    479 		       sb->s_mmp_update_interval);
    480 	}
    481 
    482 	if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
    483 		int error;
    484 
    485 		if (mount_flags & EXT2_MF_READONLY) {
    486 			fputs(_("The multiple mount protection feature cannot\n"
    487 				"be disabled if the filesystem is readonly.\n"),
    488 				stderr);
    489 			return 1;
    490 		}
    491 
    492 		error = ext2fs_read_bitmaps(fs);
    493 		if (error) {
    494 			fputs(_("Error while reading bitmaps\n"), stderr);
    495 			return 1;
    496 		}
    497 
    498 		error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
    499 		if (error) {
    500 			struct mmp_struct *mmp_cmp = fs->mmp_cmp;
    501 
    502 			if (error == EXT2_ET_MMP_MAGIC_INVALID)
    503 				printf(_("Magic number in MMP block does not "
    504 					 "match. expected: %x, actual: %x\n"),
    505 					 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
    506 			else
    507 				com_err(program_name, error, "%s",
    508 					_("while reading MMP block."));
    509 			goto mmp_error;
    510 		}
    511 
    512 		/* We need to force out the group descriptors as well */
    513 		fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
    514 		ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
    515 mmp_error:
    516 		sb->s_mmp_block = 0;
    517 		sb->s_mmp_update_interval = 0;
    518 	}
    519 
    520 	if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
    521 		/*
    522 		 * If adding a journal flag, let the create journal
    523 		 * code below handle setting the flag and creating the
    524 		 * journal.  We supply a default size if necessary.
    525 		 */
    526 		if (!journal_size)
    527 			journal_size = -1;
    528 		sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
    529 	}
    530 
    531 	if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
    532 		if (!sb->s_def_hash_version)
    533 			sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
    534 		if (uuid_is_null((unsigned char *) sb->s_hash_seed))
    535 			uuid_generate((unsigned char *) sb->s_hash_seed);
    536 	}
    537 
    538 	if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
    539 		if (ext2fs_check_desc(fs)) {
    540 			fputs(_("Clearing the flex_bg flag would "
    541 				"cause the the filesystem to be\n"
    542 				"inconsistent.\n"), stderr);
    543 			return 1;
    544 		}
    545 	}
    546 
    547 	if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
    548 			    EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
    549 		if ((mount_flags & EXT2_MF_MOUNTED) &&
    550 		    !(mount_flags & EXT2_MF_READONLY)) {
    551 			fputs(_("The huge_file feature may only be "
    552 				"cleared when the filesystem is\n"
    553 				"unmounted or mounted "
    554 				"read-only.\n"), stderr);
    555 			return 1;
    556 		}
    557 	}
    558 
    559 	if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
    560 		       EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
    561 		for (i = 0; i < fs->group_desc_count; i++) {
    562 			gd = ext2fs_group_desc(fs, fs->group_desc, i);
    563 			gd->bg_itable_unused = 0;
    564 			gd->bg_flags = EXT2_BG_INODE_ZEROED;
    565 			ext2fs_group_desc_csum_set(fs, i);
    566 		}
    567 		fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
    568 	}
    569 
    570 	if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
    571 			EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
    572 		for (i = 0; i < fs->group_desc_count; i++) {
    573 			gd = ext2fs_group_desc(fs, fs->group_desc, i);
    574 			if ((gd->bg_flags & EXT2_BG_INODE_ZEROED) == 0) {
    575 				/*
    576 				 * XXX what we really should do is zap
    577 				 * uninitialized inode tables instead.
    578 				 */
    579 				request_fsck_afterwards(fs);
    580 				break;
    581 			}
    582 			gd->bg_itable_unused = 0;
    583 			gd->bg_flags = 0;
    584 			gd->bg_checksum = 0;
    585 		}
    586 		fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
    587 	}
    588 
    589 	if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
    590 				EXT4_FEATURE_RO_COMPAT_QUOTA)) {
    591 		/*
    592 		 * Set the Q_flag here and handle the quota options in the code
    593 		 * below.
    594 		 */
    595 		if (!Q_flag) {
    596 			Q_flag = 1;
    597 			/* Enable both user quota and group quota by default */
    598 			usrquota = QOPT_ENABLE;
    599 			grpquota = QOPT_ENABLE;
    600 		}
    601 		sb->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
    602 	}
    603 
    604 	if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
    605 				EXT4_FEATURE_RO_COMPAT_QUOTA)) {
    606 		/*
    607 		 * Set the Q_flag here and handle the quota options in the code
    608 		 * below.
    609 		 */
    610 		if (Q_flag)
    611 			fputs(_("\nWarning: '^quota' option overrides '-Q'"
    612 				"arguments.\n"), stderr);
    613 		Q_flag = 1;
    614 		/* Disable both user quota and group quota by default */
    615 		usrquota = QOPT_DISABLE;
    616 		grpquota = QOPT_DISABLE;
    617 	}
    618 
    619 	if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
    620 	    (sb->s_feature_compat || sb->s_feature_ro_compat ||
    621 	     sb->s_feature_incompat))
    622 		ext2fs_update_dynamic_rev(fs);
    623 
    624 	if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
    625 			    EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
    626 	    FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
    627 			EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
    628 	    FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
    629 			    EXT2_FEATURE_INCOMPAT_FILETYPE) ||
    630 	    FEATURE_CHANGED(E2P_FEATURE_COMPAT,
    631 			    EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
    632 	    FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
    633 			EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
    634 		request_fsck_afterwards(fs);
    635 
    636 	if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
    637 	    (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
    638 	    (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
    639 		ext2fs_mark_super_dirty(fs);
    640 
    641 	return 0;
    642 }
    643 
    644 /*
    645  * Add a journal to the filesystem.
    646  */
    647 static int add_journal(ext2_filsys fs)
    648 {
    649 	unsigned long journal_blocks;
    650 	errcode_t	retval;
    651 	ext2_filsys	jfs;
    652 	io_manager	io_ptr;
    653 
    654 	if (fs->super->s_feature_compat &
    655 	    EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
    656 		fputs(_("The filesystem already has a journal.\n"), stderr);
    657 		goto err;
    658 	}
    659 	if (journal_device) {
    660 		check_plausibility(journal_device);
    661 		check_mount(journal_device, 0, _("journal"));
    662 #ifdef CONFIG_TESTIO_DEBUG
    663 		if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
    664 			io_ptr = test_io_manager;
    665 			test_io_backing_manager = unix_io_manager;
    666 		} else
    667 #endif
    668 			io_ptr = unix_io_manager;
    669 		retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
    670 				     EXT2_FLAG_JOURNAL_DEV_OK, 0,
    671 				     fs->blocksize, io_ptr, &jfs);
    672 		if (retval) {
    673 			com_err(program_name, retval,
    674 				_("\n\twhile trying to open journal on %s\n"),
    675 				journal_device);
    676 			goto err;
    677 		}
    678 		printf(_("Creating journal on device %s: "),
    679 		       journal_device);
    680 		fflush(stdout);
    681 
    682 		retval = ext2fs_add_journal_device(fs, jfs);
    683 		ext2fs_close(jfs);
    684 		if (retval) {
    685 			com_err(program_name, retval,
    686 				_("while adding filesystem to journal on %s"),
    687 				journal_device);
    688 			goto err;
    689 		}
    690 		fputs(_("done\n"), stdout);
    691 	} else if (journal_size) {
    692 		fputs(_("Creating journal inode: "), stdout);
    693 		fflush(stdout);
    694 		journal_blocks = figure_journal_size(journal_size, fs);
    695 
    696 		retval = ext2fs_add_journal_inode(fs, journal_blocks,
    697 						  journal_flags);
    698 		if (retval) {
    699 			fprintf(stderr, "\n");
    700 			com_err(program_name, retval, "%s",
    701 				_("\n\twhile trying to create journal file"));
    702 			return retval;
    703 		} else
    704 			fputs(_("done\n"), stdout);
    705 		/*
    706 		 * If the filesystem wasn't mounted, we need to force
    707 		 * the block group descriptors out.
    708 		 */
    709 		if ((mount_flags & EXT2_MF_MOUNTED) == 0)
    710 			fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
    711 	}
    712 	print_check_message(fs->super->s_max_mnt_count,
    713 			    fs->super->s_checkinterval);
    714 	return 0;
    715 
    716 err:
    717 	free(journal_device);
    718 	return 1;
    719 }
    720 
    721 static void handle_quota_options(ext2_filsys fs)
    722 {
    723 	quota_ctx_t qctx;
    724 	ext2_ino_t qf_ino;
    725 
    726 	if (!usrquota && !grpquota)
    727 		/* Nothing to do. */
    728 		return;
    729 
    730 	quota_init_context(&qctx, fs, -1);
    731 
    732 	if (usrquota == QOPT_ENABLE || grpquota == QOPT_ENABLE)
    733 		quota_compute_usage(qctx);
    734 
    735 	if (usrquota == QOPT_ENABLE && !fs->super->s_usr_quota_inum) {
    736 		if ((qf_ino = quota_file_exists(fs, USRQUOTA,
    737 						QFMT_VFS_V1)) > 0)
    738 			quota_update_limits(qctx, qf_ino, USRQUOTA);
    739 		quota_write_inode(qctx, USRQUOTA);
    740 	} else if (usrquota == QOPT_DISABLE) {
    741 		quota_remove_inode(fs, USRQUOTA);
    742 	}
    743 
    744 	if (grpquota == QOPT_ENABLE && !fs->super->s_grp_quota_inum) {
    745 		if ((qf_ino = quota_file_exists(fs, GRPQUOTA,
    746 						QFMT_VFS_V1)) > 0)
    747 			quota_update_limits(qctx, qf_ino, GRPQUOTA);
    748 		quota_write_inode(qctx, GRPQUOTA);
    749 	} else if (grpquota == QOPT_DISABLE) {
    750 		quota_remove_inode(fs, GRPQUOTA);
    751 	}
    752 
    753 	quota_release_context(&qctx);
    754 
    755 	if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
    756 		fprintf(stderr, "%s", _("\nWarning: the quota feature is still "
    757 				  "under development\n"
    758 				  "See https://ext4.wiki.kernel.org/"
    759 				  "index.php/Quota for more information\n\n"));
    760 		fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
    761 		ext2fs_mark_super_dirty(fs);
    762 	} else if (!fs->super->s_usr_quota_inum &&
    763 		   !fs->super->s_grp_quota_inum) {
    764 		fs->super->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
    765 		ext2fs_mark_super_dirty(fs);
    766 	}
    767 
    768 	return;
    769 }
    770 
    771 #ifdef CONFIG_QUOTA
    772 static void parse_quota_opts(const char *opts)
    773 {
    774 	char	*buf, *token, *next, *p;
    775 	int	len;
    776 
    777 	len = strlen(opts);
    778 	buf = malloc(len+1);
    779 	if (!buf) {
    780 		fputs(_("Couldn't allocate memory to parse quota "
    781 			"options!\n"), stderr);
    782 		exit(1);
    783 	}
    784 	strcpy(buf, opts);
    785 	for (token = buf; token && *token; token = next) {
    786 		p = strchr(token, ',');
    787 		next = 0;
    788 		if (p) {
    789 			*p = 0;
    790 			next = p+1;
    791 		}
    792 
    793 		if (strcmp(token, "usrquota") == 0) {
    794 			usrquota = QOPT_ENABLE;
    795 		} else if (strcmp(token, "^usrquota") == 0) {
    796 			usrquota = QOPT_DISABLE;
    797 		} else if (strcmp(token, "grpquota") == 0) {
    798 			grpquota = QOPT_ENABLE;
    799 		} else if (strcmp(token, "^grpquota") == 0) {
    800 			grpquota = QOPT_DISABLE;
    801 		} else {
    802 			fputs(_("\nBad quota options specified.\n\n"
    803 				"Following valid quota options are available "
    804 				"(pass by separating with comma):\n"
    805 				"\t[^]usrquota\n"
    806 				"\t[^]grpquota\n"
    807 				"\n\n"), stderr);
    808 			free(buf);
    809 			exit(1);
    810 		}
    811 	}
    812 	free(buf);
    813 }
    814 #endif
    815 
    816 static void parse_e2label_options(int argc, char ** argv)
    817 {
    818 	if ((argc < 2) || (argc > 3)) {
    819 		fputs(_("Usage: e2label device [newlabel]\n"), stderr);
    820 		exit(1);
    821 	}
    822 	io_options = strchr(argv[1], '?');
    823 	if (io_options)
    824 		*io_options++ = 0;
    825 	device_name = blkid_get_devname(NULL, argv[1], NULL);
    826 	if (!device_name) {
    827 		com_err("e2label", 0, _("Unable to resolve '%s'"),
    828 			argv[1]);
    829 		exit(1);
    830 	}
    831 	open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
    832 	if (argc == 3) {
    833 		open_flag |= EXT2_FLAG_RW;
    834 		L_flag = 1;
    835 		new_label = argv[2];
    836 	} else
    837 		print_label++;
    838 }
    839 
    840 static time_t parse_time(char *str)
    841 {
    842 	struct	tm	ts;
    843 
    844 	if (strcmp(str, "now") == 0) {
    845 		return (time(0));
    846 	}
    847 	memset(&ts, 0, sizeof(ts));
    848 #ifdef HAVE_STRPTIME
    849 	strptime(str, "%Y%m%d%H%M%S", &ts);
    850 #else
    851 	sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
    852 	       &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
    853 	ts.tm_year -= 1900;
    854 	ts.tm_mon -= 1;
    855 	if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
    856 	    ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
    857 	    ts.tm_min > 59 || ts.tm_sec > 61)
    858 		ts.tm_mday = 0;
    859 #endif
    860 	if (ts.tm_mday == 0) {
    861 		com_err(program_name, 0,
    862 			_("Couldn't parse date/time specifier: %s"),
    863 			str);
    864 		usage();
    865 	}
    866 	ts.tm_isdst = -1;
    867 	return (mktime(&ts));
    868 }
    869 
    870 static void parse_tune2fs_options(int argc, char **argv)
    871 {
    872 	int c;
    873 	char *tmp;
    874 	struct group *gr;
    875 	struct passwd *pw;
    876 	char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:";
    877 
    878 #ifdef CONFIG_QUOTA
    879 	strcat(optstring, "Q:");
    880 #endif
    881 	open_flag = 0;
    882 
    883 	printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
    884 	while ((c = getopt(argc, argv, optstring)) != EOF)
    885 		switch (c) {
    886 		case 'c':
    887 			max_mount_count = strtol(optarg, &tmp, 0);
    888 			if (*tmp || max_mount_count > 16000) {
    889 				com_err(program_name, 0,
    890 					_("bad mounts count - %s"),
    891 					optarg);
    892 				usage();
    893 			}
    894 			if (max_mount_count == 0)
    895 				max_mount_count = -1;
    896 			c_flag = 1;
    897 			open_flag = EXT2_FLAG_RW;
    898 			break;
    899 		case 'C':
    900 			mount_count = strtoul(optarg, &tmp, 0);
    901 			if (*tmp || mount_count > 16000) {
    902 				com_err(program_name, 0,
    903 					_("bad mounts count - %s"),
    904 					optarg);
    905 				usage();
    906 			}
    907 			C_flag = 1;
    908 			open_flag = EXT2_FLAG_RW;
    909 			break;
    910 		case 'e':
    911 			if (strcmp(optarg, "continue") == 0)
    912 				errors = EXT2_ERRORS_CONTINUE;
    913 			else if (strcmp(optarg, "remount-ro") == 0)
    914 				errors = EXT2_ERRORS_RO;
    915 			else if (strcmp(optarg, "panic") == 0)
    916 				errors = EXT2_ERRORS_PANIC;
    917 			else {
    918 				com_err(program_name, 0,
    919 					_("bad error behavior - %s"),
    920 					optarg);
    921 				usage();
    922 			}
    923 			e_flag = 1;
    924 			open_flag = EXT2_FLAG_RW;
    925 			break;
    926 		case 'E':
    927 			extended_cmd = optarg;
    928 			open_flag |= EXT2_FLAG_RW;
    929 			break;
    930 		case 'f': /* Force */
    931 			f_flag = 1;
    932 			break;
    933 		case 'g':
    934 			resgid = strtoul(optarg, &tmp, 0);
    935 			if (*tmp) {
    936 				gr = getgrnam(optarg);
    937 				if (gr == NULL)
    938 					tmp = optarg;
    939 				else {
    940 					resgid = gr->gr_gid;
    941 					*tmp = 0;
    942 				}
    943 			}
    944 			if (*tmp) {
    945 				com_err(program_name, 0,
    946 					_("bad gid/group name - %s"),
    947 					optarg);
    948 				usage();
    949 			}
    950 			g_flag = 1;
    951 			open_flag = EXT2_FLAG_RW;
    952 			break;
    953 		case 'i':
    954 			interval = strtoul(optarg, &tmp, 0);
    955 			switch (*tmp) {
    956 			case 's':
    957 				tmp++;
    958 				break;
    959 			case '\0':
    960 			case 'd':
    961 			case 'D': /* days */
    962 				interval *= 86400;
    963 				if (*tmp != '\0')
    964 					tmp++;
    965 				break;
    966 			case 'm':
    967 			case 'M': /* months! */
    968 				interval *= 86400 * 30;
    969 				tmp++;
    970 				break;
    971 			case 'w':
    972 			case 'W': /* weeks */
    973 				interval *= 86400 * 7;
    974 				tmp++;
    975 				break;
    976 			}
    977 			if (*tmp) {
    978 				com_err(program_name, 0,
    979 					_("bad interval - %s"), optarg);
    980 				usage();
    981 			}
    982 			i_flag = 1;
    983 			open_flag = EXT2_FLAG_RW;
    984 			break;
    985 		case 'j':
    986 			if (!journal_size)
    987 				journal_size = -1;
    988 			open_flag = EXT2_FLAG_RW;
    989 			break;
    990 		case 'J':
    991 			parse_journal_opts(optarg);
    992 			open_flag = EXT2_FLAG_RW;
    993 			break;
    994 		case 'l':
    995 			l_flag = 1;
    996 			break;
    997 		case 'L':
    998 			new_label = optarg;
    999 			L_flag = 1;
   1000 			open_flag |= EXT2_FLAG_RW |
   1001 				EXT2_FLAG_JOURNAL_DEV_OK;
   1002 			break;
   1003 		case 'm':
   1004 			reserved_ratio = strtod(optarg, &tmp);
   1005 			if (*tmp || reserved_ratio > 50 ||
   1006 			    reserved_ratio < 0) {
   1007 				com_err(program_name, 0,
   1008 					_("bad reserved block ratio - %s"),
   1009 					optarg);
   1010 				usage();
   1011 			}
   1012 			m_flag = 1;
   1013 			open_flag = EXT2_FLAG_RW;
   1014 			break;
   1015 		case 'M':
   1016 			new_last_mounted = optarg;
   1017 			M_flag = 1;
   1018 			open_flag = EXT2_FLAG_RW;
   1019 			break;
   1020 		case 'o':
   1021 			if (mntopts_cmd) {
   1022 				com_err(program_name, 0, "%s",
   1023 					_("-o may only be specified once"));
   1024 				usage();
   1025 			}
   1026 			mntopts_cmd = optarg;
   1027 			open_flag = EXT2_FLAG_RW;
   1028 			break;
   1029 		case 'O':
   1030 			if (features_cmd) {
   1031 				com_err(program_name, 0, "%s",
   1032 					_("-O may only be specified once"));
   1033 				usage();
   1034 			}
   1035 			features_cmd = optarg;
   1036 			open_flag = EXT2_FLAG_RW;
   1037 			break;
   1038 #ifdef CONFIG_QUOTA
   1039 		case 'Q':
   1040 			Q_flag = 1;
   1041 			parse_quota_opts(optarg);
   1042 			open_flag = EXT2_FLAG_RW;
   1043 			break;
   1044 #endif
   1045 		case 'r':
   1046 			reserved_blocks = strtoul(optarg, &tmp, 0);
   1047 			if (*tmp) {
   1048 				com_err(program_name, 0,
   1049 					_("bad reserved blocks count - %s"),
   1050 					optarg);
   1051 				usage();
   1052 			}
   1053 			r_flag = 1;
   1054 			open_flag = EXT2_FLAG_RW;
   1055 			break;
   1056 		case 's': /* Deprecated */
   1057 			s_flag = atoi(optarg);
   1058 			open_flag = EXT2_FLAG_RW;
   1059 			break;
   1060 		case 'T':
   1061 			T_flag = 1;
   1062 			last_check_time = parse_time(optarg);
   1063 			open_flag = EXT2_FLAG_RW;
   1064 			break;
   1065 		case 'u':
   1066 				resuid = strtoul(optarg, &tmp, 0);
   1067 				if (*tmp) {
   1068 					pw = getpwnam(optarg);
   1069 					if (pw == NULL)
   1070 						tmp = optarg;
   1071 					else {
   1072 						resuid = pw->pw_uid;
   1073 						*tmp = 0;
   1074 					}
   1075 				}
   1076 				if (*tmp) {
   1077 					com_err(program_name, 0,
   1078 						_("bad uid/user name - %s"),
   1079 						optarg);
   1080 					usage();
   1081 				}
   1082 				u_flag = 1;
   1083 				open_flag = EXT2_FLAG_RW;
   1084 				break;
   1085 		case 'U':
   1086 			new_UUID = optarg;
   1087 			U_flag = 1;
   1088 			open_flag = EXT2_FLAG_RW |
   1089 				EXT2_FLAG_JOURNAL_DEV_OK;
   1090 			break;
   1091 		case 'I':
   1092 			new_inode_size = strtoul(optarg, &tmp, 0);
   1093 			if (*tmp) {
   1094 				com_err(program_name, 0,
   1095 					_("bad inode size - %s"),
   1096 					optarg);
   1097 				usage();
   1098 			}
   1099 			if (!((new_inode_size &
   1100 			       (new_inode_size - 1)) == 0)) {
   1101 				com_err(program_name, 0,
   1102 					_("Inode size must be a "
   1103 					  "power of two- %s"),
   1104 					optarg);
   1105 				usage();
   1106 			}
   1107 			open_flag = EXT2_FLAG_RW;
   1108 			I_flag = 1;
   1109 			break;
   1110 		default:
   1111 			usage();
   1112 		}
   1113 	if (optind < argc - 1 || optind == argc)
   1114 		usage();
   1115 	if (!open_flag && !l_flag)
   1116 		usage();
   1117 	io_options = strchr(argv[optind], '?');
   1118 	if (io_options)
   1119 		*io_options++ = 0;
   1120 	device_name = blkid_get_devname(NULL, argv[optind], NULL);
   1121 	if (!device_name) {
   1122 		com_err(program_name, 0, _("Unable to resolve '%s'"),
   1123 			argv[optind]);
   1124 		exit(1);
   1125 	}
   1126 }
   1127 
   1128 #ifdef CONFIG_BUILD_FINDFS
   1129 void do_findfs(int argc, char **argv)
   1130 {
   1131 	char	*dev;
   1132 
   1133 	if ((argc != 2) ||
   1134 	    (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
   1135 		fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
   1136 		exit(2);
   1137 	}
   1138 	dev = blkid_get_devname(NULL, argv[1], NULL);
   1139 	if (!dev) {
   1140 		com_err("findfs", 0, _("Unable to resolve '%s'"),
   1141 			argv[1]);
   1142 		exit(1);
   1143 	}
   1144 	puts(dev);
   1145 	exit(0);
   1146 }
   1147 #endif
   1148 
   1149 static int parse_extended_opts(ext2_filsys fs, const char *opts)
   1150 {
   1151 	char	*buf, *token, *next, *p, *arg;
   1152 	int	len, hash_alg;
   1153 	int	r_usage = 0;
   1154 
   1155 	len = strlen(opts);
   1156 	buf = malloc(len+1);
   1157 	if (!buf) {
   1158 		fprintf(stderr, "%s",
   1159 			_("Couldn't allocate memory to parse options!\n"));
   1160 		return 1;
   1161 	}
   1162 	strcpy(buf, opts);
   1163 	for (token = buf; token && *token; token = next) {
   1164 		p = strchr(token, ',');
   1165 		next = 0;
   1166 		if (p) {
   1167 			*p = 0;
   1168 			next = p+1;
   1169 		}
   1170 		arg = strchr(token, '=');
   1171 		if (arg) {
   1172 			*arg = 0;
   1173 			arg++;
   1174 		}
   1175 		if (strcmp(token, "clear-mmp") == 0 ||
   1176 		    strcmp(token, "clear_mmp") == 0) {
   1177 			clear_mmp = 1;
   1178 		} else if (strcmp(token, "mmp_update_interval") == 0) {
   1179 			unsigned long intv;
   1180 			if (!arg) {
   1181 				r_usage++;
   1182 				continue;
   1183 			}
   1184 			intv = strtoul(arg, &p, 0);
   1185 			if (*p) {
   1186 				fprintf(stderr,
   1187 					_("Invalid mmp_update_interval: %s\n"),
   1188 					arg);
   1189 				r_usage++;
   1190 				continue;
   1191 			}
   1192 			if (intv == 0) {
   1193 				intv = EXT4_MMP_UPDATE_INTERVAL;
   1194 			} else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
   1195 				fprintf(stderr,
   1196 					_("mmp_update_interval too big: %lu\n"),
   1197 					intv);
   1198 				r_usage++;
   1199 				continue;
   1200 			}
   1201 			printf(P_("Setting multiple mount protection update "
   1202 				  "interval to %lu second\n",
   1203 				  "Setting multiple mount protection update "
   1204 				  "interval to %lu seconds\n", intv),
   1205 			       intv);
   1206 			fs->super->s_mmp_update_interval = intv;
   1207 			ext2fs_mark_super_dirty(fs);
   1208 		} else if (!strcmp(token, "test_fs")) {
   1209 			fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
   1210 			printf("Setting test filesystem flag\n");
   1211 			ext2fs_mark_super_dirty(fs);
   1212 		} else if (!strcmp(token, "^test_fs")) {
   1213 			fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
   1214 			printf("Clearing test filesystem flag\n");
   1215 			ext2fs_mark_super_dirty(fs);
   1216 		} else if (strcmp(token, "stride") == 0) {
   1217 			if (!arg) {
   1218 				r_usage++;
   1219 				continue;
   1220 			}
   1221 			stride = strtoul(arg, &p, 0);
   1222 			if (*p) {
   1223 				fprintf(stderr,
   1224 					_("Invalid RAID stride: %s\n"),
   1225 					arg);
   1226 				r_usage++;
   1227 				continue;
   1228 			}
   1229 			stride_set = 1;
   1230 		} else if (strcmp(token, "stripe-width") == 0 ||
   1231 			   strcmp(token, "stripe_width") == 0) {
   1232 			if (!arg) {
   1233 				r_usage++;
   1234 				continue;
   1235 			}
   1236 			stripe_width = strtoul(arg, &p, 0);
   1237 			if (*p) {
   1238 				fprintf(stderr,
   1239 					_("Invalid RAID stripe-width: %s\n"),
   1240 					arg);
   1241 				r_usage++;
   1242 				continue;
   1243 			}
   1244 			stripe_width_set = 1;
   1245 		} else if (strcmp(token, "hash_alg") == 0 ||
   1246 			   strcmp(token, "hash-alg") == 0) {
   1247 			if (!arg) {
   1248 				r_usage++;
   1249 				continue;
   1250 			}
   1251 			hash_alg = e2p_string2hash(arg);
   1252 			if (hash_alg < 0) {
   1253 				fprintf(stderr,
   1254 					_("Invalid hash algorithm: %s\n"),
   1255 					arg);
   1256 				r_usage++;
   1257 				continue;
   1258 			}
   1259 			fs->super->s_def_hash_version = hash_alg;
   1260 			printf(_("Setting default hash algorithm "
   1261 				 "to %s (%d)\n"),
   1262 			       arg, hash_alg);
   1263 			ext2fs_mark_super_dirty(fs);
   1264 		} else if (!strcmp(token, "mount_opts")) {
   1265 			if (!arg) {
   1266 				r_usage++;
   1267 				continue;
   1268 			}
   1269 			if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
   1270 				fprintf(stderr,
   1271 					"Extended mount options too long\n");
   1272 				continue;
   1273 			}
   1274 			ext_mount_opts = strdup(arg);
   1275 		} else
   1276 			r_usage++;
   1277 	}
   1278 	if (r_usage) {
   1279 		fprintf(stderr, "%s", _("\nBad options specified.\n\n"
   1280 			"Extended options are separated by commas, "
   1281 			"and may take an argument which\n"
   1282 			"\tis set off by an equals ('=') sign.\n\n"
   1283 			"Valid extended options are:\n"
   1284 			"\tclear_mmp\n"
   1285 			"\thash_alg=<hash algorithm>\n"
   1286 			"\tmount_opts=<extended default mount options>\n"
   1287 			"\tstride=<RAID per-disk chunk size in blocks>\n"
   1288 			"\tstripe_width=<RAID stride*data disks in blocks>\n"
   1289 			"\ttest_fs\n"
   1290 			"\t^test_fs\n"));
   1291 		free(buf);
   1292 		return 1;
   1293 	}
   1294 	free(buf);
   1295 
   1296 	return 0;
   1297 }
   1298 
   1299 /*
   1300  * Fill in the block bitmap bmap with the information regarding the
   1301  * blocks to be moved
   1302  */
   1303 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
   1304 			    ext2fs_block_bitmap bmap)
   1305 {
   1306 	dgrp_t i;
   1307 	int retval;
   1308 	ext2_badblocks_list bb_list = 0;
   1309 	blk64_t j, needed_blocks = 0;
   1310 	blk64_t start_blk, end_blk;
   1311 
   1312 	retval = ext2fs_read_bb_inode(fs, &bb_list);
   1313 	if (retval)
   1314 		return retval;
   1315 
   1316 	for (i = 0; i < fs->group_desc_count; i++) {
   1317 		start_blk = ext2fs_inode_table_loc(fs, i) +
   1318 					fs->inode_blocks_per_group;
   1319 
   1320 		end_blk = ext2fs_inode_table_loc(fs, i) +
   1321 					new_ino_blks_per_grp;
   1322 
   1323 		for (j = start_blk; j < end_blk; j++) {
   1324 			if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
   1325 				/*
   1326 				 * IF the block is a bad block we fail
   1327 				 */
   1328 				if (ext2fs_badblocks_list_test(bb_list, j)) {
   1329 					ext2fs_badblocks_list_free(bb_list);
   1330 					return ENOSPC;
   1331 				}
   1332 
   1333 				ext2fs_mark_block_bitmap2(bmap, j);
   1334 			} else {
   1335 				/*
   1336 				 * We are going to use this block for
   1337 				 * inode table. So mark them used.
   1338 				 */
   1339 				ext2fs_mark_block_bitmap2(fs->block_map, j);
   1340 			}
   1341 		}
   1342 		needed_blocks += end_blk - start_blk;
   1343 	}
   1344 
   1345 	ext2fs_badblocks_list_free(bb_list);
   1346 	if (needed_blocks > ext2fs_free_blocks_count(fs->super))
   1347 		return ENOSPC;
   1348 
   1349 	return 0;
   1350 }
   1351 
   1352 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
   1353 {
   1354 	dgrp_t group;
   1355 	group = ext2fs_group_of_blk2(fs, blk);
   1356 	if (ext2fs_block_bitmap_loc(fs, group) == blk)
   1357 		return 1;
   1358 	if (ext2fs_inode_bitmap_loc(fs, group) == blk)
   1359 		return 1;
   1360 	return 0;
   1361 }
   1362 
   1363 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
   1364 {
   1365 	blk64_t start_blk, end_blk;
   1366 	start_blk = fs->super->s_first_data_block +
   1367 			EXT2_BLOCKS_PER_GROUP(fs->super) * group;
   1368 	/*
   1369 	 * We cannot get new block beyond end_blk for for the last block group
   1370 	 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
   1371 	 */
   1372 	end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
   1373 	if (blk >= start_blk && blk <= end_blk)
   1374 		return 1;
   1375 	return 0;
   1376 }
   1377 
   1378 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
   1379 {
   1380 
   1381 	char *buf;
   1382 	dgrp_t group = 0;
   1383 	errcode_t retval;
   1384 	int meta_data = 0;
   1385 	blk64_t blk, new_blk, goal;
   1386 	struct blk_move *bmv;
   1387 
   1388 	retval = ext2fs_get_mem(fs->blocksize, &buf);
   1389 	if (retval)
   1390 		return retval;
   1391 
   1392 	for (new_blk = blk = fs->super->s_first_data_block;
   1393 	     blk < ext2fs_blocks_count(fs->super); blk++) {
   1394 		if (!ext2fs_test_block_bitmap2(bmap, blk))
   1395 			continue;
   1396 
   1397 		if (ext2fs_is_meta_block(fs, blk)) {
   1398 			/*
   1399 			 * If the block is mapping a fs meta data block
   1400 			 * like group desc/block bitmap/inode bitmap. We
   1401 			 * should find a block in the same group and fix
   1402 			 * the respective fs metadata pointers. Otherwise
   1403 			 * fail
   1404 			 */
   1405 			group = ext2fs_group_of_blk2(fs, blk);
   1406 			goal = ext2fs_group_first_block2(fs, group);
   1407 			meta_data = 1;
   1408 
   1409 		} else {
   1410 			goal = new_blk;
   1411 		}
   1412 		retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
   1413 		if (retval)
   1414 			goto err_out;
   1415 
   1416 		/* new fs meta data block should be in the same group */
   1417 		if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
   1418 			retval = ENOSPC;
   1419 			goto err_out;
   1420 		}
   1421 
   1422 		/* Mark this block as allocated */
   1423 		ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
   1424 
   1425 		/* Add it to block move list */
   1426 		retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
   1427 		if (retval)
   1428 			goto err_out;
   1429 
   1430 		bmv->old_loc = blk;
   1431 		bmv->new_loc = new_blk;
   1432 
   1433 		list_add(&(bmv->list), &blk_move_list);
   1434 
   1435 		retval = io_channel_read_blk64(fs->io, blk, 1, buf);
   1436 		if (retval)
   1437 			goto err_out;
   1438 
   1439 		retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
   1440 		if (retval)
   1441 			goto err_out;
   1442 	}
   1443 
   1444 err_out:
   1445 	ext2fs_free_mem(&buf);
   1446 	return retval;
   1447 }
   1448 
   1449 static blk64_t translate_block(blk64_t blk)
   1450 {
   1451 	struct list_head *entry;
   1452 	struct blk_move *bmv;
   1453 
   1454 	list_for_each(entry, &blk_move_list) {
   1455 		bmv = list_entry(entry, struct blk_move, list);
   1456 		if (bmv->old_loc == blk)
   1457 			return bmv->new_loc;
   1458 	}
   1459 
   1460 	return 0;
   1461 }
   1462 
   1463 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
   1464 			 blk64_t *block_nr,
   1465 			 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
   1466 			 blk64_t ref_block EXT2FS_ATTR((unused)),
   1467 			 int ref_offset EXT2FS_ATTR((unused)),
   1468 			 void *priv_data)
   1469 {
   1470 	int ret = 0;
   1471 	blk64_t new_blk;
   1472 	ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
   1473 
   1474 	if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
   1475 		return 0;
   1476 	new_blk = translate_block(*block_nr);
   1477 	if (new_blk) {
   1478 		*block_nr = new_blk;
   1479 		/*
   1480 		 * This will force the ext2fs_write_inode in the iterator
   1481 		 */
   1482 		ret |= BLOCK_CHANGED;
   1483 	}
   1484 
   1485 	return ret;
   1486 }
   1487 
   1488 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
   1489 {
   1490 	errcode_t retval = 0;
   1491 	ext2_ino_t ino;
   1492 	blk64_t blk;
   1493 	char *block_buf = 0;
   1494 	struct ext2_inode inode;
   1495 	ext2_inode_scan	scan = NULL;
   1496 
   1497 	retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
   1498 	if (retval)
   1499 		return retval;
   1500 
   1501 	retval = ext2fs_open_inode_scan(fs, 0, &scan);
   1502 	if (retval)
   1503 		goto err_out;
   1504 
   1505 	while (1) {
   1506 		retval = ext2fs_get_next_inode(scan, &ino, &inode);
   1507 		if (retval)
   1508 			goto err_out;
   1509 
   1510 		if (!ino)
   1511 			break;
   1512 
   1513 		if (inode.i_links_count == 0)
   1514 			continue; /* inode not in use */
   1515 
   1516 		/* FIXME!!
   1517 		 * If we end up modifying the journal inode
   1518 		 * the sb->s_jnl_blocks will differ. But a
   1519 		 * subsequent e2fsck fixes that.
   1520 		 * Do we need to fix this ??
   1521 		 */
   1522 
   1523 		if (ext2fs_file_acl_block(fs, &inode) &&
   1524 		    ext2fs_test_block_bitmap2(bmap,
   1525 					ext2fs_file_acl_block(fs, &inode))) {
   1526 			blk = translate_block(ext2fs_file_acl_block(fs,
   1527 								    &inode));
   1528 			if (!blk)
   1529 				continue;
   1530 
   1531 			ext2fs_file_acl_block_set(fs, &inode, blk);
   1532 
   1533 			/*
   1534 			 * Write the inode to disk so that inode table
   1535 			 * resizing can work
   1536 			 */
   1537 			retval = ext2fs_write_inode(fs, ino, &inode);
   1538 			if (retval)
   1539 				goto err_out;
   1540 		}
   1541 
   1542 		if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
   1543 			continue;
   1544 
   1545 		retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
   1546 					       process_block, bmap);
   1547 		if (retval)
   1548 			goto err_out;
   1549 
   1550 	}
   1551 
   1552 err_out:
   1553 	ext2fs_free_mem(&block_buf);
   1554 
   1555 	return retval;
   1556 }
   1557 
   1558 /*
   1559  * We need to scan for inode and block bitmaps that may need to be
   1560  * moved.  This can take place if the filesystem was formatted for
   1561  * RAID arrays using the mke2fs's extended option "stride".
   1562  */
   1563 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
   1564 {
   1565 	dgrp_t i;
   1566 	blk64_t blk, new_blk;
   1567 
   1568 	for (i = 0; i < fs->group_desc_count; i++) {
   1569 		blk = ext2fs_block_bitmap_loc(fs, i);
   1570 		if (ext2fs_test_block_bitmap2(bmap, blk)) {
   1571 			new_blk = translate_block(blk);
   1572 			if (!new_blk)
   1573 				continue;
   1574 			ext2fs_block_bitmap_loc_set(fs, i, new_blk);
   1575 		}
   1576 
   1577 		blk = ext2fs_inode_bitmap_loc(fs, i);
   1578 		if (ext2fs_test_block_bitmap2(bmap, blk)) {
   1579 			new_blk = translate_block(blk);
   1580 			if (!new_blk)
   1581 				continue;
   1582 			ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
   1583 		}
   1584 	}
   1585 	return 0;
   1586 }
   1587 
   1588 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
   1589 {
   1590 	dgrp_t i;
   1591 	blk64_t blk;
   1592 	errcode_t retval;
   1593 	int new_ino_blks_per_grp;
   1594 	unsigned int j;
   1595 	char *old_itable = NULL, *new_itable = NULL;
   1596 	char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
   1597 	unsigned long old_ino_size;
   1598 	int old_itable_size, new_itable_size;
   1599 
   1600 	old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
   1601 	old_ino_size = EXT2_INODE_SIZE(fs->super);
   1602 
   1603 	new_ino_blks_per_grp = ext2fs_div_ceil(
   1604 					EXT2_INODES_PER_GROUP(fs->super) *
   1605 					new_ino_size,
   1606 					fs->blocksize);
   1607 
   1608 	new_itable_size = new_ino_blks_per_grp * fs->blocksize;
   1609 
   1610 	retval = ext2fs_get_mem(old_itable_size, &old_itable);
   1611 	if (retval)
   1612 		return retval;
   1613 
   1614 	retval = ext2fs_get_mem(new_itable_size, &new_itable);
   1615 	if (retval)
   1616 		goto err_out;
   1617 
   1618 	tmp_old_itable = old_itable;
   1619 	tmp_new_itable = new_itable;
   1620 
   1621 	for (i = 0; i < fs->group_desc_count; i++) {
   1622 		blk = ext2fs_inode_table_loc(fs, i);
   1623 		retval = io_channel_read_blk64(fs->io, blk,
   1624 				fs->inode_blocks_per_group, old_itable);
   1625 		if (retval)
   1626 			goto err_out;
   1627 
   1628 		for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
   1629 			memcpy(new_itable, old_itable, old_ino_size);
   1630 
   1631 			memset(new_itable+old_ino_size, 0,
   1632 					new_ino_size - old_ino_size);
   1633 
   1634 			new_itable += new_ino_size;
   1635 			old_itable += old_ino_size;
   1636 		}
   1637 
   1638 		/* reset the pointer */
   1639 		old_itable = tmp_old_itable;
   1640 		new_itable = tmp_new_itable;
   1641 
   1642 		retval = io_channel_write_blk64(fs->io, blk,
   1643 					new_ino_blks_per_grp, new_itable);
   1644 		if (retval)
   1645 			goto err_out;
   1646 	}
   1647 
   1648 	/* Update the meta data */
   1649 	fs->inode_blocks_per_group = new_ino_blks_per_grp;
   1650 	fs->super->s_inode_size = new_ino_size;
   1651 
   1652 err_out:
   1653 	if (old_itable)
   1654 		ext2fs_free_mem(&old_itable);
   1655 
   1656 	if (new_itable)
   1657 		ext2fs_free_mem(&new_itable);
   1658 
   1659 	return retval;
   1660 }
   1661 
   1662 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
   1663 {
   1664 	blk64_t		blk;
   1665 	ext2_ino_t	ino;
   1666 	unsigned int	group = 0;
   1667 	unsigned int	count = 0;
   1668 	int		total_free = 0;
   1669 	int		group_free = 0;
   1670 
   1671 	/*
   1672 	 * First calculate the block statistics
   1673 	 */
   1674 	for (blk = fs->super->s_first_data_block;
   1675 	     blk < ext2fs_blocks_count(fs->super); blk++) {
   1676 		if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
   1677 			group_free++;
   1678 			total_free++;
   1679 		}
   1680 		count++;
   1681 		if ((count == fs->super->s_blocks_per_group) ||
   1682 		    (blk == ext2fs_blocks_count(fs->super)-1)) {
   1683 			ext2fs_bg_free_blocks_count_set(fs, group++,
   1684 							group_free);
   1685 			count = 0;
   1686 			group_free = 0;
   1687 		}
   1688 	}
   1689 	total_free = EXT2FS_C2B(fs, total_free);
   1690 	ext2fs_free_blocks_count_set(fs->super, total_free);
   1691 
   1692 	/*
   1693 	 * Next, calculate the inode statistics
   1694 	 */
   1695 	group_free = 0;
   1696 	total_free = 0;
   1697 	count = 0;
   1698 	group = 0;
   1699 
   1700 	/* Protect loop from wrap-around if s_inodes_count maxed */
   1701 	for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
   1702 		if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
   1703 			group_free++;
   1704 			total_free++;
   1705 		}
   1706 		count++;
   1707 		if ((count == fs->super->s_inodes_per_group) ||
   1708 		    (ino == fs->super->s_inodes_count)) {
   1709 			ext2fs_bg_free_inodes_count_set(fs, group++,
   1710 							group_free);
   1711 			count = 0;
   1712 			group_free = 0;
   1713 		}
   1714 	}
   1715 	fs->super->s_free_inodes_count = total_free;
   1716 	ext2fs_mark_super_dirty(fs);
   1717 	return 0;
   1718 }
   1719 
   1720 #define list_for_each_safe(pos, pnext, head) \
   1721 	for (pos = (head)->next, pnext = pos->next; pos != (head); \
   1722 	     pos = pnext, pnext = pos->next)
   1723 
   1724 static void free_blk_move_list(void)
   1725 {
   1726 	struct list_head *entry, *tmp;
   1727 	struct blk_move *bmv;
   1728 
   1729 	list_for_each_safe(entry, tmp, &blk_move_list) {
   1730 		bmv = list_entry(entry, struct blk_move, list);
   1731 		list_del(entry);
   1732 		ext2fs_free_mem(&bmv);
   1733 	}
   1734 	return;
   1735 }
   1736 
   1737 static int resize_inode(ext2_filsys fs, unsigned long new_size)
   1738 {
   1739 	errcode_t retval;
   1740 	int new_ino_blks_per_grp;
   1741 	ext2fs_block_bitmap bmap;
   1742 
   1743 	retval = ext2fs_read_inode_bitmap(fs);
   1744 	if (retval) {
   1745 		fputs(_("Failed to read inode bitmap\n"), stderr);
   1746 		return retval;
   1747 	}
   1748 	retval = ext2fs_read_block_bitmap(fs);
   1749 	if (retval) {
   1750 		fputs(_("Failed to read block bitmap\n"), stderr);
   1751 		return retval;
   1752 	}
   1753 	INIT_LIST_HEAD(&blk_move_list);
   1754 
   1755 
   1756 	new_ino_blks_per_grp = ext2fs_div_ceil(
   1757 					EXT2_INODES_PER_GROUP(fs->super)*
   1758 					new_size,
   1759 					fs->blocksize);
   1760 
   1761 	/* We may change the file system.
   1762 	 * Mark the file system as invalid so that
   1763 	 * the user is prompted to run fsck.
   1764 	 */
   1765 	fs->super->s_state &= ~EXT2_VALID_FS;
   1766 
   1767 	retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
   1768 						&bmap);
   1769 	if (retval) {
   1770 		fputs(_("Failed to allocate block bitmap when "
   1771 				"increasing inode size\n"), stderr);
   1772 		return retval;
   1773 	}
   1774 	retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
   1775 	if (retval) {
   1776 		fputs(_("Not enough space to increase inode size \n"), stderr);
   1777 		goto err_out;
   1778 	}
   1779 	retval = move_block(fs, bmap);
   1780 	if (retval) {
   1781 		fputs(_("Failed to relocate blocks during inode resize \n"),
   1782 		      stderr);
   1783 		goto err_out;
   1784 	}
   1785 	retval = inode_scan_and_fix(fs, bmap);
   1786 	if (retval)
   1787 		goto err_out_undo;
   1788 
   1789 	retval = group_desc_scan_and_fix(fs, bmap);
   1790 	if (retval)
   1791 		goto err_out_undo;
   1792 
   1793 	retval = expand_inode_table(fs, new_size);
   1794 	if (retval)
   1795 		goto err_out_undo;
   1796 
   1797 	ext2fs_calculate_summary_stats(fs);
   1798 
   1799 	fs->super->s_state |= EXT2_VALID_FS;
   1800 	/* mark super block and block bitmap as dirty */
   1801 	ext2fs_mark_super_dirty(fs);
   1802 	ext2fs_mark_bb_dirty(fs);
   1803 
   1804 err_out:
   1805 	free_blk_move_list();
   1806 	ext2fs_free_block_bitmap(bmap);
   1807 
   1808 	return retval;
   1809 
   1810 err_out_undo:
   1811 	free_blk_move_list();
   1812 	ext2fs_free_block_bitmap(bmap);
   1813 	fputs(_("Error in resizing the inode size.\n"
   1814 			"Run e2undo to undo the "
   1815 			"file system changes. \n"), stderr);
   1816 
   1817 	return retval;
   1818 }
   1819 
   1820 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
   1821 {
   1822 	errcode_t retval = 0;
   1823 	const char *tdb_dir;
   1824 	char *tdb_file;
   1825 	char *dev_name, *tmp_name;
   1826 
   1827 #if 0 /* FIXME!! */
   1828 	/*
   1829 	 * Configuration via a conf file would be
   1830 	 * nice
   1831 	 */
   1832 	profile_get_string(profile, "scratch_files",
   1833 					"directory", 0, 0,
   1834 					&tdb_dir);
   1835 #endif
   1836 	tmp_name = strdup(name);
   1837 	if (!tmp_name) {
   1838 	alloc_fn_fail:
   1839 		com_err(program_name, ENOMEM, "%s",
   1840 			_("Couldn't allocate memory for tdb filename\n"));
   1841 		return ENOMEM;
   1842 	}
   1843 	dev_name = basename(tmp_name);
   1844 
   1845 	tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
   1846 	if (!tdb_dir)
   1847 		tdb_dir = "/var/lib/e2fsprogs";
   1848 
   1849 	if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
   1850 	    access(tdb_dir, W_OK))
   1851 		return 0;
   1852 
   1853 	tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
   1854 	if (!tdb_file)
   1855 		goto alloc_fn_fail;
   1856 	sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
   1857 
   1858 	if (!access(tdb_file, F_OK)) {
   1859 		if (unlink(tdb_file) < 0) {
   1860 			retval = errno;
   1861 			com_err(program_name, retval,
   1862 				_("while trying to delete %s"),
   1863 				tdb_file);
   1864 			free(tdb_file);
   1865 			return retval;
   1866 		}
   1867 	}
   1868 
   1869 	set_undo_io_backing_manager(*io_ptr);
   1870 	*io_ptr = undo_io_manager;
   1871 	set_undo_io_backup_file(tdb_file);
   1872 	printf(_("To undo the tune2fs operation please run "
   1873 		 "the command\n    e2undo %s %s\n\n"),
   1874 		 tdb_file, name);
   1875 	free(tdb_file);
   1876 	free(tmp_name);
   1877 	return retval;
   1878 }
   1879 
   1880 #ifndef BUILD_AS_LIB
   1881 int main(int argc, char **argv)
   1882 #else
   1883 int tune2fs_main(int argc, char **argv)
   1884 #endif  /* BUILD_AS_LIB */
   1885 {
   1886 	errcode_t retval;
   1887 	ext2_filsys fs;
   1888 	struct ext2_super_block *sb;
   1889 	io_manager io_ptr, io_ptr_orig = NULL;
   1890 	int rc = 0;
   1891 
   1892 #ifdef ENABLE_NLS
   1893 	setlocale(LC_MESSAGES, "");
   1894 	setlocale(LC_CTYPE, "");
   1895 	bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
   1896 	textdomain(NLS_CAT_NAME);
   1897 	set_com_err_gettext(gettext);
   1898 #endif
   1899 	if (argc && *argv)
   1900 		program_name = *argv;
   1901 	add_error_table(&et_ext2_error_table);
   1902 
   1903 #ifdef CONFIG_BUILD_FINDFS
   1904 	if (strcmp(get_progname(argv[0]), "findfs") == 0)
   1905 		do_findfs(argc, argv);
   1906 #endif
   1907 	if (strcmp(get_progname(argv[0]), "e2label") == 0)
   1908 		parse_e2label_options(argc, argv);
   1909 	else
   1910 		parse_tune2fs_options(argc, argv);
   1911 
   1912 #ifdef CONFIG_TESTIO_DEBUG
   1913 	if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
   1914 		io_ptr = test_io_manager;
   1915 		test_io_backing_manager = unix_io_manager;
   1916 	} else
   1917 #endif
   1918 		io_ptr = unix_io_manager;
   1919 
   1920 retry_open:
   1921 	if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
   1922 		open_flag |= EXT2_FLAG_SKIP_MMP;
   1923 
   1924 	open_flag |= EXT2_FLAG_64BITS;
   1925 
   1926 	/* keep the filesystem struct around to dump MMP data */
   1927 	open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
   1928 
   1929 	retval = ext2fs_open2(device_name, io_options, open_flag,
   1930 			      0, 0, io_ptr, &fs);
   1931 	if (retval) {
   1932 		com_err(program_name, retval,
   1933 			_("while trying to open %s"),
   1934 			device_name);
   1935 		if (retval == EXT2_ET_MMP_FSCK_ON ||
   1936 		    retval == EXT2_ET_MMP_UNKNOWN_SEQ)
   1937 			dump_mmp_msg(fs->mmp_buf,
   1938 				     _("If you are sure the filesystem "
   1939 				       "is not in use on any node, run:\n"
   1940 				       "'tune2fs -f -E clear_mmp {device}'\n"));
   1941 		else if (retval == EXT2_ET_MMP_FAILED)
   1942 			dump_mmp_msg(fs->mmp_buf, NULL);
   1943 		else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
   1944 			fprintf(stderr,
   1945 				_("MMP block magic is bad. Try to fix it by "
   1946 				  "running:\n'e2fsck -f %s'\n"), device_name);
   1947 		else if (retval != EXT2_ET_MMP_FAILED)
   1948 			fprintf(stderr, "%s",
   1949 			     _("Couldn't find valid filesystem superblock.\n"));
   1950 
   1951 		ext2fs_free(fs);
   1952 		exit(1);
   1953 	}
   1954 	fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
   1955 
   1956 	if (I_flag && !io_ptr_orig) {
   1957 		/*
   1958 		 * Check the inode size is right so we can issue an
   1959 		 * error message and bail before setting up the tdb
   1960 		 * file.
   1961 		 */
   1962 		if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
   1963 			fprintf(stderr, _("The inode size is already %lu\n"),
   1964 				new_inode_size);
   1965 			rc = 1;
   1966 			goto closefs;
   1967 		}
   1968 		if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
   1969 			fprintf(stderr, "%s",
   1970 				_("Shrinking inode size is not supported\n"));
   1971 			rc = 1;
   1972 			goto closefs;
   1973 		}
   1974 		if (new_inode_size > fs->blocksize) {
   1975 			fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
   1976 				new_inode_size, fs->blocksize);
   1977 			rc = 1;
   1978 			goto closefs;
   1979 		}
   1980 
   1981 		/*
   1982 		 * If inode resize is requested use the
   1983 		 * Undo I/O manager
   1984 		 */
   1985 		io_ptr_orig = io_ptr;
   1986 		retval = tune2fs_setup_tdb(device_name, &io_ptr);
   1987 		if (retval) {
   1988 			rc = 1;
   1989 			goto closefs;
   1990 		}
   1991 		if (io_ptr != io_ptr_orig) {
   1992 			ext2fs_close(fs);
   1993 			goto retry_open;
   1994 		}
   1995 	}
   1996 
   1997 	sb = fs->super;
   1998 	fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
   1999 
   2000 	if (print_label) {
   2001 		/* For e2label emulation */
   2002 		printf("%.*s\n", (int) sizeof(sb->s_volume_name),
   2003 		       sb->s_volume_name);
   2004 		remove_error_table(&et_ext2_error_table);
   2005 		goto closefs;
   2006 	}
   2007 
   2008 	retval = ext2fs_check_if_mounted(device_name, &mount_flags);
   2009 	if (retval) {
   2010 		com_err("ext2fs_check_if_mount", retval,
   2011 			_("while determining whether %s is mounted."),
   2012 			device_name);
   2013 		rc = 1;
   2014 		goto closefs;
   2015 	}
   2016 	/* Normally we only need to write out the superblock */
   2017 	fs->flags |= EXT2_FLAG_SUPER_ONLY;
   2018 
   2019 	if (c_flag) {
   2020 		sb->s_max_mnt_count = max_mount_count;
   2021 		ext2fs_mark_super_dirty(fs);
   2022 		printf(_("Setting maximal mount count to %d\n"),
   2023 		       max_mount_count);
   2024 	}
   2025 	if (C_flag) {
   2026 		sb->s_mnt_count = mount_count;
   2027 		ext2fs_mark_super_dirty(fs);
   2028 		printf(_("Setting current mount count to %d\n"), mount_count);
   2029 	}
   2030 	if (e_flag) {
   2031 		sb->s_errors = errors;
   2032 		ext2fs_mark_super_dirty(fs);
   2033 		printf(_("Setting error behavior to %d\n"), errors);
   2034 	}
   2035 	if (g_flag) {
   2036 		sb->s_def_resgid = resgid;
   2037 		ext2fs_mark_super_dirty(fs);
   2038 		printf(_("Setting reserved blocks gid to %lu\n"), resgid);
   2039 	}
   2040 	if (i_flag) {
   2041 		if (interval >= (1ULL << 32)) {
   2042 			com_err(program_name, 0,
   2043 				_("interval between checks is too big (%lu)"),
   2044 				interval);
   2045 			rc = 1;
   2046 			goto closefs;
   2047 		}
   2048 		sb->s_checkinterval = interval;
   2049 		ext2fs_mark_super_dirty(fs);
   2050 		printf(_("Setting interval between checks to %lu seconds\n"),
   2051 		       interval);
   2052 	}
   2053 	if (m_flag) {
   2054 		ext2fs_r_blocks_count_set(sb, reserved_ratio *
   2055 					  ext2fs_blocks_count(sb) / 100.0);
   2056 		ext2fs_mark_super_dirty(fs);
   2057 		printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
   2058 			reserved_ratio, ext2fs_r_blocks_count(sb));
   2059 	}
   2060 	if (r_flag) {
   2061 		if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
   2062 			com_err(program_name, 0,
   2063 				_("reserved blocks count is too big (%llu)"),
   2064 				reserved_blocks);
   2065 			rc = 1;
   2066 			goto closefs;
   2067 		}
   2068 		ext2fs_r_blocks_count_set(sb, reserved_blocks);
   2069 		ext2fs_mark_super_dirty(fs);
   2070 		printf(_("Setting reserved blocks count to %llu\n"),
   2071 		       reserved_blocks);
   2072 	}
   2073 	if (s_flag == 1) {
   2074 		if (sb->s_feature_ro_compat &
   2075 		    EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
   2076 			fputs(_("\nThe filesystem already has sparse "
   2077 				"superblocks.\n"), stderr);
   2078 		else {
   2079 			sb->s_feature_ro_compat |=
   2080 				EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
   2081 			sb->s_state &= ~EXT2_VALID_FS;
   2082 			ext2fs_mark_super_dirty(fs);
   2083 			printf(_("\nSparse superblock flag set.  %s"),
   2084 			       _(please_fsck));
   2085 		}
   2086 	}
   2087 	if (s_flag == 0) {
   2088 		fputs(_("\nClearing the sparse superflag not supported.\n"),
   2089 		      stderr);
   2090 		rc = 1;
   2091 		goto closefs;
   2092 	}
   2093 	if (T_flag) {
   2094 		sb->s_lastcheck = last_check_time;
   2095 		ext2fs_mark_super_dirty(fs);
   2096 		printf(_("Setting time filesystem last checked to %s\n"),
   2097 		       ctime(&last_check_time));
   2098 	}
   2099 	if (u_flag) {
   2100 		sb->s_def_resuid = resuid;
   2101 		ext2fs_mark_super_dirty(fs);
   2102 		printf(_("Setting reserved blocks uid to %lu\n"), resuid);
   2103 	}
   2104 	if (L_flag) {
   2105 		if (strlen(new_label) > sizeof(sb->s_volume_name))
   2106 			fputs(_("Warning: label too long, truncating.\n"),
   2107 			      stderr);
   2108 		memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
   2109 		strncpy(sb->s_volume_name, new_label,
   2110 			sizeof(sb->s_volume_name));
   2111 		ext2fs_mark_super_dirty(fs);
   2112 	}
   2113 	if (M_flag) {
   2114 		memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
   2115 		strncpy(sb->s_last_mounted, new_last_mounted,
   2116 			sizeof(sb->s_last_mounted));
   2117 		ext2fs_mark_super_dirty(fs);
   2118 	}
   2119 	if (mntopts_cmd) {
   2120 		rc = update_mntopts(fs, mntopts_cmd);
   2121 		if (rc)
   2122 			goto closefs;
   2123 	}
   2124 	if (features_cmd) {
   2125 		rc = update_feature_set(fs, features_cmd);
   2126 		if (rc)
   2127 			goto closefs;
   2128 	}
   2129 	if (extended_cmd) {
   2130 		rc = parse_extended_opts(fs, extended_cmd);
   2131 		if (rc)
   2132 			goto closefs;
   2133 		if (clear_mmp && !f_flag) {
   2134 			fputs(_("Error in using clear_mmp. "
   2135 				"It must be used with -f\n"),
   2136 			      stderr);
   2137 			goto closefs;
   2138 		}
   2139 	}
   2140 	if (clear_mmp) {
   2141 		rc = ext2fs_mmp_clear(fs);
   2142 		goto closefs;
   2143 	}
   2144 	if (journal_size || journal_device) {
   2145 		rc = add_journal(fs);
   2146 		if (rc)
   2147 			goto closefs;
   2148 	}
   2149 
   2150 	if (Q_flag) {
   2151 		if (mount_flags & EXT2_MF_MOUNTED) {
   2152 			fputs(_("The quota feature may only be changed when "
   2153 				"the filesystem is unmounted.\n"), stderr);
   2154 			rc = 1;
   2155 			goto closefs;
   2156 		}
   2157 		handle_quota_options(fs);
   2158 	}
   2159 
   2160 	if (U_flag) {
   2161 		int set_csum = 0;
   2162 		dgrp_t i;
   2163 
   2164 		if (sb->s_feature_ro_compat &
   2165 		    EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
   2166 			/*
   2167 			 * Changing the UUID requires rewriting all metadata,
   2168 			 * which can race with a mounted fs.  Don't allow that.
   2169 			 */
   2170 			if (mount_flags & EXT2_MF_MOUNTED) {
   2171 				fputs(_("The UUID may only be "
   2172 					"changed when the filesystem is "
   2173 					"unmounted.\n"), stderr);
   2174 				exit(1);
   2175 			}
   2176 			if (check_fsck_needed(fs))
   2177 				exit(1);
   2178 
   2179 			/*
   2180 			 * Determine if the block group checksums are
   2181 			 * correct so we know whether or not to set
   2182 			 * them later on.
   2183 			 */
   2184 			for (i = 0; i < fs->group_desc_count; i++)
   2185 				if (!ext2fs_group_desc_csum_verify(fs, i))
   2186 					break;
   2187 			if (i >= fs->group_desc_count)
   2188 				set_csum = 1;
   2189 		}
   2190 		if ((strcasecmp(new_UUID, "null") == 0) ||
   2191 		    (strcasecmp(new_UUID, "clear") == 0)) {
   2192 			uuid_clear(sb->s_uuid);
   2193 		} else if (strcasecmp(new_UUID, "time") == 0) {
   2194 			uuid_generate_time(sb->s_uuid);
   2195 		} else if (strcasecmp(new_UUID, "random") == 0) {
   2196 			uuid_generate(sb->s_uuid);
   2197 		} else if (uuid_parse(new_UUID, sb->s_uuid)) {
   2198 			com_err(program_name, 0, "%s",
   2199 				_("Invalid UUID format\n"));
   2200 			rc = 1;
   2201 			goto closefs;
   2202 		}
   2203 		if (set_csum) {
   2204 			for (i = 0; i < fs->group_desc_count; i++)
   2205 				ext2fs_group_desc_csum_set(fs, i);
   2206 			fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
   2207 		}
   2208 		ext2fs_mark_super_dirty(fs);
   2209 	}
   2210 	if (I_flag) {
   2211 		if (mount_flags & EXT2_MF_MOUNTED) {
   2212 			fputs(_("The inode size may only be "
   2213 				"changed when the filesystem is "
   2214 				"unmounted.\n"), stderr);
   2215 			rc = 1;
   2216 			goto closefs;
   2217 		}
   2218 		if (fs->super->s_feature_incompat &
   2219 		    EXT4_FEATURE_INCOMPAT_FLEX_BG) {
   2220 			fputs(_("Changing the inode size not supported for "
   2221 				"filesystems with the flex_bg\n"
   2222 				"feature enabled.\n"),
   2223 			      stderr);
   2224 			rc = 1;
   2225 			goto closefs;
   2226 		}
   2227 		/*
   2228 		 * We want to update group descriptor also
   2229 		 * with the new free inode count
   2230 		 */
   2231 		fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
   2232 		if (resize_inode(fs, new_inode_size) == 0) {
   2233 			printf(_("Setting inode size %lu\n"),
   2234 							new_inode_size);
   2235 		} else {
   2236 			printf("%s", _("Failed to change inode size\n"));
   2237 			rc = 1;
   2238 			goto closefs;
   2239 		}
   2240 	}
   2241 
   2242 	if (l_flag)
   2243 		list_super(sb);
   2244 	if (stride_set) {
   2245 		sb->s_raid_stride = stride;
   2246 		ext2fs_mark_super_dirty(fs);
   2247 		printf(_("Setting stride size to %d\n"), stride);
   2248 	}
   2249 	if (stripe_width_set) {
   2250 		sb->s_raid_stripe_width = stripe_width;
   2251 		ext2fs_mark_super_dirty(fs);
   2252 		printf(_("Setting stripe width to %d\n"), stripe_width);
   2253 	}
   2254 	if (ext_mount_opts) {
   2255 		strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
   2256 			sizeof(fs->super->s_mount_opts));
   2257 		fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
   2258 		ext2fs_mark_super_dirty(fs);
   2259 		printf(_("Setting extended default mount options to '%s'\n"),
   2260 		       ext_mount_opts);
   2261 		free(ext_mount_opts);
   2262 	}
   2263 	free(device_name);
   2264 	remove_error_table(&et_ext2_error_table);
   2265 
   2266 closefs:
   2267 if (rc) {
   2268 		ext2fs_mmp_stop(fs);
   2269 #ifndef BUILD_AS_LIB
   2270 		exit(1);
   2271 #endif
   2272 	}
   2273 	return (ext2fs_close(fs) ? 1 : 0);
   2274 }
   2275