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81aeadf51097a7f025f9df98570bb87555dd2ff4
reiserfsprogs/fsck/super.c
T
Jeff Mahoney 81aeadf510 reiserfsprogs: annotate for endian safeness 
By annotating structure members and other on-disk structures as little
endian, we can catch bugs more easily.

The code was already endian safe except for three minor spots:
1) The badblock list code was initializing its key in an endian-unsafe way.
2) Indirect block pointer sequence printing was treating cpu-order values
   as little endian.
3) reiserfsck was trying to do endian switching on the lost+found key,
   but it was before it was even initialized to anything, so we can
   just remove that completely.

These issues were fixed as part of this commit.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
2013-08-26 19:02:20 -04:00

978 lines
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/*
* Copyright 2001-2004 by Hans Reiser, licensing governed by
* reiserfsprogs/README
*/
#include "fsck.h"
#if defined(HAVE_LIBUUID) && defined(HAVE_UUID_UUID_H)
# include <uuid/uuid.h>
#endif
#define fsck_conditional_log(sb_found, fmt, list...) { \
if (sb_found) \
fsck_log(fmt, ## list); \
}
static int what_fs_version(void)
{
size_t n = 0;
char *answer = NULL;
int version;
printf("\nwhat the version of ReiserFS do you use[1-4]\n"
"\t(1) 3.6.x\n"
"\t(2) >=3.5.9 (introduced in the middle of 1999) (if you use linux 2.2, choose this one)\n"
"\t(3) < 3.5.9 converted to new format (don't choose if unsure)\n"
"\t(4) < 3.5.9 (this is very old format, don't choose if unsure)\n"
"\t(X) exit\n");
getline(&answer, &n, stdin);
version = atoi(answer);
if (version < 1 || version > 4)
die("rebuild_sb: wrong version");
return version;
}
/*
#define super_error(exit_code, text) { \
fsck_log(text); \
return exit_code; \
}
int check_sb (reiserfs_filsys_t *fs) {
int magic = 0, version = 0;
if (!is_blocksize_correct (fs->fs_blocksize))
super_error(-1, "Wrong blocksize found in the super block\n");
if (is_reiserfs_3_6_magic_string (sb))
magic = 2;
else if (is_reiserfs_3_5_magic_string (sb))
magic = 1;
else if (is_reiserfs_jr_magic_string (sb))
magic = 3;
else
super_error(-1, "Invalid magic found in the super block.\n");
if (magic == 1 || magic == 2) {
if (fsck_data (fs)->journal_dev_name)
fsck_log("Reiserfs with standard journal found, but there was specified a "
"journal dev\n");
standard_journal = 1;
} else {
if (!fsck_data (fs)->journal_dev_name)
super_error(-1, "Reiserfs with non standard journal found, but there was not "
"specified any journal dev\n");
standard_journal = 0;
}
if (get_sb_version (sb) != REISERFS_FORMAT_3_6 && get_sb_version (sb) != REISERFS_FORMAT_3_5)
super_error(-1, "Invalid format found in the super block.\n");
if (is_new_sb_location(fs->fs_super_bh->b_blocknr, fs->fs_blocksize))
{
if (magic == 3)
version = get_sb_version (sb) == REISERFS_FORMAT_3_6 ? 1 : 2;
else
version = magic == 2 ? 1 : 2;
} else if (is_old_sb_location(fs->fs_super_bh->b_blocknr, fs->fs_blocksize)) {
if (magic == 3)
version = get_sb_version (sb) == REISERFS_FORMAT_3_6 ? 3 : 4;
else
version = magic == 2 ? 3 : 4;
} else
die("Super block in the wong block(%d).\n", fs->fs_super_bh->b_blocknr);
if (version == 0)
die ("FS format must be figured out here.\n");
if (get_sb_block_count (sb) > count_blocks (filename, fs->fs_blocksize))
super_error(-1, "Invalid block count found in the super block.\n");
if (get_sb_block_size (sb) != fs->fs_blocksize)
super_error(-1, "Invalid block size found in the super block (%lu).\n",
get_sb_block_size (sb));
//Non needed from here
p_oid_maxsize = (fs->fs_blocksize - reiserfs_super_block_size (sb)) / sizeof(__u32) / 2 * 2;
if (get_sb_oid_maxsize (sb) != p_oid_maxsize)
super_error(-1, "Invalid objectid map max size found in the super block (%lu).\n",
get_sb_oid_maxsize (sb));
if (get_sb_oid_cursize (sb) == 1 || get_sb_oid_cursize (sb) > get_sb_oid_maxsize (sb))
super_error(-1, "Invalid objectid map found in the super block (%lu).\n",
get_sb_oid_cursize (sb));
if (get_sb_root_block (sb) > block_count && get_sb_root_block (sb) != ~0)
fsck_log("Invalid root block found in the super block (%lu).\n",
get_sb_root_block (sb));
if (get_sb_free_blocks (sb) > block_count)
fsck_log ("Invalid free block count found in the super block (%lu).\n",
get_sb_free_blocks (sb));
if (get_sb_tree_height (sb) && ((get_sb_tree_height (sb) < DISK_LEAF_NODE_LEVEL + 1) ||
(get_sb_tree_height (sb) > MAX_HEIGHT) && (get_sb_tree_height (sb) != ~0)))
super_error(-1, "Invalid tree height found in the super block (%lu).\n",
get_sb_tree_height (sb));
if (get_sb_hash_code (sb) && code2name (get_sb_hash_code (sb)) == 0)
super_error(-1, "Invalid hash found in the super block (%lu).\n",
get_sb_hash_code (sb));
if (version == 1 || version == 3) {
if (!uuid_is_correct(sb->s_uuid))
fsck_log ("Invalid uuid found, you should generate a new one.\n");
if (sb->s_flags & 0xfffffffe)
fsck_log ("rebuild-sb: super block flags found (%u), zeroed\n", sb->s_flags);
}
//Not needed till here.
p_bmap_nr = (block_count + (fs->fs_blocksize * 8 - 1)) / (fs->fs_blocksize * 8);
if (get_sb_bmap_nr (sb) != p_bmap_nr)
super_error(-1, "Invalid bitmap number found in the super block (%lu).\n",
get_sb_bmap_nr (sb));
if (!fsck_skip_journal (fs) && standard_journal == 1) {
if (get_jp_journal_dev (sb_jp(sb)) != 0)
super_error(-1, "Invalid journal device found (%lu).\n", get_jp_journal_dev (sb_jp(sb)));
if (get_jp_journal_1st_block (sb_jp(sb)) != get_journal_start_must (fs))
super_error(-1, "Invalid journal first block found (%lu).\n", get_jp_journal_1st_block (sb_jp(sb)));
if (get_jp_journal_size (sb_jp(sb)) != journal_default_size(fs->fs_super_bh->b_blocknr, fs->fs_blocksize))
super_error(-1, "Invalid journal size found (%lu).\n", get_jp_journal_size (sb_jp(sb)) + 1);
if (get_jp_journal_max_batch (sb_jp(sb)) != advise_journal_max_batch(get_jp_journal_max_trans_len (sb_jp(sb)))) {
fsck_conditional_log (magic_was_found, "rebuild-sb: wrong journal max batch size occured (%lu), fixed (%d)\n",
get_jp_journal_max_batch (sb_jp(sb)), advise_journal_max_batch(get_jp_journal_max_trans_len (sb_jp(sb))));
set_jp_journal_max_batch (sb_jp(sb), advise_journal_max_batch(get_jp_journal_max_trans_len (sb_jp(sb))));
}
if (get_jp_journal_max_commit_age (sb_jp(sb)) != advise_journal_max_commit_age()) {
fsck_conditional_log (magic_was_found, "rebuild-sb: wrong journal max commit age occured (%lu), fixed (%d)\n",
get_jp_journal_max_commit_age (sb_jp(sb)), advise_journal_max_commit_age());
set_jp_journal_max_commit_age (sb_jp(sb), advise_journal_max_commit_age());
}
if (get_jp_journal_max_trans_age (sb_jp(sb)) != advise_journal_max_trans_age()) {
fsck_log ("rebuild-sb: wrong journal max commit age occured (%lu), fixed (0)\n",
get_jp_journal_max_trans_age (sb_jp(sb)), advise_journal_max_trans_age());
set_jp_journal_max_trans_age (sb_jp(sb), advise_journal_max_trans_age());
}
}
*/
void rebuild_sb(reiserfs_filsys_t *fs, char *filename, struct fsck_data *data)
{
int version = 0;
struct reiserfs_super_block *ondisk_sb = NULL;
struct reiserfs_super_block *sb = NULL;
struct reiserfs_journal_header *j_head;
int magic_was_found = 0;
unsigned long block_count = 0;
__u16 p_oid_maxsize;
unsigned int bmap_nr;
__u32 p_jp_journal_1st_block = 0;
__u32 p_jp_dev_size = 0;
int standard_journal = -1;
char *journal_dev_name = NULL;
char *tmp;
int sb_size;
char *answer = NULL;
size_t n = 0;
struct stat stat_buf;
int retval, exit_code = EXIT_OK;
if (!no_reiserfs_found(fs)) {
sb = getmem(sizeof(*sb));
if (!is_opened_rw(fs)) {
close(fs->fs_dev);
fs->fs_dev =
open(fs->fs_file_name, O_RDWR | O_LARGEFILE);
}
if (!is_blocksize_correct(fs->fs_blocksize)) {
printf
("\nCannot find a proper blocksize, enter block size [4096]: \n");
getline(&answer, &n, stdin);
if (strcmp(answer, "\n")) {
retval = (int)strtol(answer, &tmp, 0);
if ((*tmp && strcmp(tmp, "\n")) || retval < 0)
reiserfs_exit(EXIT_USER,
"rebuild_sb: wrong block size specified\n");
if (!is_blocksize_correct(retval))
reiserfs_exit(EXIT_USER,
"rebuild_sb: wrong block size specified, "
"only power of 2 from 512-8192 interval are supported.\n");
} else
retval = 4096;
fs->fs_blocksize = retval;
}
if (!(block_count = count_blocks(filename, fs->fs_blocksize)))
exit(EXIT_OPER);
/* save ondisk_sb somewhere and work in temp area */
ondisk_sb = fs->fs_ondisk_sb;
memcpy(sb, fs->fs_ondisk_sb, sizeof(*sb));
fs->fs_ondisk_sb = sb;
if (is_reiserfs_3_6_magic_string(sb)) {
/* 3_6 magic */
if (fsck_data(fs)->journal_dev_name)
/* journal dev must not be specified with standard journal */
reiserfs_exit(EXIT_USER,
"ReiserFS with default journal "
"is found, but there was specified a journal device.");
if (fs->fs_super_bh->b_blocknr ==
REISERFS_DISK_OFFSET_IN_BYTES / fs->fs_blocksize)
version = 1;
else if (fs->fs_super_bh->b_blocknr ==
REISERFS_OLD_DISK_OFFSET_IN_BYTES /
fs->fs_blocksize)
version = 3;
magic_was_found = 2;
} else if (is_reiserfs_3_5_magic_string(sb)) {
if (fsck_data(fs)->journal_dev_name)
/* journal dev must not be specified with standard journal */
reiserfs_exit(EXIT_USER,
"ReiserFS with default journal "
"is found, but there was specified a journal device.");
/* 3_5 magic */
if (fs->fs_super_bh->b_blocknr ==
REISERFS_DISK_OFFSET_IN_BYTES / fs->fs_blocksize)
version = 2;
else if (fs->fs_super_bh->b_blocknr ==
REISERFS_OLD_DISK_OFFSET_IN_BYTES /
fs->fs_blocksize)
version = 4;
magic_was_found = 1;
} else if (is_reiserfs_jr_magic_string(sb)) {
if (!fsck_data(fs)->journal_dev_name
&& !fsck_skip_journal(fs))
/* journal dev must be specified with non standard journal */
reiserfs_exit(EXIT_USER,
"ReiserFS with non default journal "
"is found, but there was not specified any journal device.");
if (get_sb_version(sb) == REISERFS_FORMAT_3_6) {
/*non-standard magic + sb_format == 3_6 */
if (fs->fs_super_bh->b_blocknr ==
REISERFS_DISK_OFFSET_IN_BYTES /
fs->fs_blocksize)
version = 1;
else if (fs->fs_super_bh->b_blocknr ==
REISERFS_OLD_DISK_OFFSET_IN_BYTES /
fs->fs_blocksize)
version = 3;
magic_was_found = 3;
} else if (get_sb_version(sb) == REISERFS_FORMAT_3_5) {
/* non-standard magic + sb_format == 3_5 */
if (fs->fs_super_bh->b_blocknr ==
REISERFS_DISK_OFFSET_IN_BYTES /
fs->fs_blocksize)
version = 2;
else if (fs->fs_super_bh->b_blocknr ==
REISERFS_OLD_DISK_OFFSET_IN_BYTES /
fs->fs_blocksize)
version = 4;
magic_was_found = 3;
} else {
/* non-standard magic + bad sb_format */
version = 0;
magic_was_found = 3;
}
} else
reiserfs_exit(EXIT_USER,
"We opened device but there is no magic "
"and there is no correct superblock format found.");
if (magic_was_found == 1 || magic_was_found == 2)
standard_journal = 1;
else
standard_journal = 0;
if (version == 0)
version = what_fs_version();
if (get_sb_block_count(sb) != block_count) {
do {
printf("\nDid you use resizer(y/n)[n]: ");
getline(&answer, &n, stdin);
} while (strcmp("y\n", answer) &&
strcmp("n\n", answer) && strcmp("\n", answer));
if (!strcmp("y\n", answer)) {
printf("\nEnter partition size [%lu]: ",
block_count);
getline(&answer, &n, stdin);
if (strcmp("\n", answer))
block_count = atoi(answer);
} else {
fsck_conditional_log(magic_was_found,
"rebuild-sb: wrong block count "
"occured (%lu), fixed (%lu)\n",
get_sb_block_count(sb),
block_count);
}
set_sb_block_count(sb, block_count);
}
if (get_sb_block_size(sb) != fs->fs_blocksize) {
fsck_log
("rebuild-sb: wrong block size occured (%lu), fixed (%lu)\n",
get_sb_block_size(sb), fs->fs_blocksize);
set_sb_block_size(sb, fs->fs_blocksize);
}
}
/* if no reiserfs_found or bad data found in that SB, what was checked in previous
* clause */
if (no_reiserfs_found(fs)) {
int fd;
fd = open(filename, O_RDWR | O_LARGEFILE);
if (fd == -1) {
reiserfs_exit(EXIT_OPER,
"rebuils_sb: cannot open device %s",
filename);
}
version = what_fs_version();
if (version == 3 || version == 4) {
retval = 4096;
} else {
printf("\nEnter block size [4096]: \n");
getline(&answer, &n, stdin);
if (strcmp(answer, "\n")) {
retval = (int)strtol(answer, &tmp, 0);
if ((*tmp && strcmp(tmp, "\n")) || retval < 0)
reiserfs_exit(EXIT_USER,
"rebuild_sb: wrong block size specified\n");
if (!is_blocksize_correct(retval))
reiserfs_exit(EXIT_USER,
"rebuild_sb: wrong block size specified, "
"only divisible by 1024 are supported currently\n");
} else
retval = 4096;
}
if (!(block_count = count_blocks(filename, retval)))
exit(EXIT_OPER);
switch (version) {
case 1:
fs = reiserfs_create(filename, REISERFS_FORMAT_3_6,
block_count, retval, 1, 1);
break;
case 2:
fs = reiserfs_create(filename, REISERFS_FORMAT_3_5,
block_count, retval, 1, 1);
break;
case 3:
fs = reiserfs_create(filename, REISERFS_FORMAT_3_6,
block_count, retval, 1, 0);
break;
case 4:
fs = reiserfs_create(filename, REISERFS_FORMAT_3_5,
block_count, retval, 1, 0);
break;
}
if (fs == NULL)
return;
sb = fs->fs_ondisk_sb;
fs->fs_vp = data;
if (!fsck_skip_journal(fs)) {
if (!fsck_data(fs)->journal_dev_name) {
do {
printf
("\nNo journal device was specified. (If journal is not "
"available, re-run with --no-journal-available option specified).\n"
"Is journal default? (y/n)[y]: ");
getline(&answer, &n, stdin);
} while (strcmp("y\n", answer) &&
strcmp("n\n", answer) &&
strcmp("\n", answer));
if (!strcmp("n\n", answer)) {
printf
("\nSpecify journal device with -j option.\n");
exit(EXIT_USER);
}
standard_journal = 1;
} else {
standard_journal = 0;
memcpy(fs->fs_ondisk_sb->s_v1.s_magic,
REISERFS_JR_SUPER_MAGIC_STRING,
strlen(REISERFS_JR_SUPER_MAGIC_STRING));
}
}
do {
printf("\nDid you use resizer(y/n)[n]: ");
getline(&answer, &n, stdin);
} while (strcmp("y\n", answer) && strcmp("n\n", answer)
&& strcmp("\n", answer));
if (!strcmp("y\n", answer)) {
printf("\nEnter partition size [%lu]: ", block_count);
getline(&answer, &n, stdin);
if (strcmp("\n", answer))
block_count = atoi(answer);
set_sb_block_count(sb, block_count);
}
set_sb_fs_state(sb, FS_ERROR);
}
if (version == 1 || version == 3) {
if (get_reiserfs_format(sb) != REISERFS_FORMAT_3_6) {
fsck_log
("rebuild-sb: wrong reiserfs version occured (%lu), fixed (%lu)\n",
get_reiserfs_format(sb), REISERFS_FORMAT_3_6);
set_sb_version(sb, REISERFS_FORMAT_3_6);
}
} else if (version == 2 || version == 4) {
if (get_reiserfs_format(sb) != REISERFS_FORMAT_3_5) {
fsck_log
("rebuild-sb: wrong reiserfs version occured (%lu), fixed (%lu)\n",
get_reiserfs_format(sb), REISERFS_FORMAT_3_5);
set_sb_version(sb, REISERFS_FORMAT_3_5);
}
}
p_oid_maxsize = (fs->fs_blocksize - reiserfs_super_block_size(sb)) /
sizeof(__u32) / 2 * 2;
if (get_sb_oid_maxsize(sb) != p_oid_maxsize) {
fsck_log
("rebuild-sb: wrong objectid map max size occured (%lu), fixed (%lu)\n",
get_sb_oid_maxsize(sb), p_oid_maxsize);
set_sb_oid_maxsize(sb, p_oid_maxsize);
}
bmap_nr = reiserfs_fs_bmap_nr(fs);
if (reiserfs_bmap_over(bmap_nr) && get_sb_bmap_nr(sb) != 0) {
fsck_log
("rebuild-sb: wrong bitmap number occured (%u), fixed (0) "
"(really %u)\n", get_sb_bmap_nr(sb), bmap_nr);
set_sb_bmap_nr(sb, 0);
} else if (get_sb_bmap_nr(sb) != bmap_nr) {
fsck_log("rebuild-sb: wrong bitmap number occured (%u), "
"fixed (%u)\n", get_sb_bmap_nr(sb), bmap_nr);
set_sb_bmap_nr(sb, bmap_nr);
}
if (get_sb_root_block(sb) > block_count) {
fsck_log("rebuild-sb: wrong root block occured (%lu), zeroed\n",
get_sb_root_block(sb));
set_sb_root_block(sb, 0);
}
if (get_sb_free_blocks(sb) > block_count) {
fsck_log
("rebuild-sb: wrong free block count occured (%lu), zeroed\n",
get_sb_free_blocks(sb));
set_sb_free_blocks(sb, 0);
}
if (get_sb_umount_state(sb) != FS_CLEANLY_UMOUNTED &&
get_sb_umount_state(sb) != FS_NOT_CLEANLY_UMOUNTED) {
fsck_conditional_log(magic_was_found,
"rebuild-sb: wrong umount state (%u), "
"fixed to (FS_NOT_CLEANLY_UMOUNTED)\n",
get_sb_umount_state(sb));
set_sb_umount_state(sb, FS_NOT_CLEANLY_UMOUNTED);
}
if (get_sb_oid_cursize(sb) == 1 ||
get_sb_oid_cursize(sb) > get_sb_oid_maxsize(sb)) {
fsck_log
("rebuild-sb: wrong objectid map occured (%lu), zeroed\n",
get_sb_oid_cursize(sb));
set_sb_oid_cursize(sb, 0);
}
if (get_sb_tree_height(sb) &&
((get_sb_tree_height(sb) < DISK_LEAF_NODE_LEVEL + 1) ||
(get_sb_tree_height(sb) > MAX_HEIGHT))) {
fsck_log("rebuild-sb: wrong tree height occured (%u), zeroed\n",
get_sb_tree_height(sb));
set_sb_tree_height(sb, 0);
}
if (get_sb_hash_code(sb) && code2name(get_sb_hash_code(sb)) == NULL) {
fsck_log("rebuild-sb: wrong hash occured (%lu), zeroed\n",
get_sb_hash_code(sb));
set_sb_hash_code(sb, 0);
}
if (version == 1 || version == 3) {
#if defined(HAVE_LIBUUID) && defined(HAVE_UUID_UUID_H)
if (uuid_is_null(sb->s_uuid)) {
uuid_generate(sb->s_uuid);
fsck_log("rebuild-sb: no uuid found, a new uuid was "
"generated (%U)\n", sb->s_uuid);
}
#endif
if (sb->s_flags != 0 && sb->s_flags != cpu_to_le32(1)) {
fsck_log
("rebuild-sb: super block flags found (%u), zeroed\n",
sb->s_flags);
sb->s_flags = 0;
}
}
/*
if we have a standard journal
reserved = 0
dev - same
size = journal_default_size(fs->fs_super_bh->b_blocknr, fs)
offset = journal_default_size(fs)
if we have a non standard journal
if we found magic string
try to find a jhead and comare dev, size, offset there
if params are not equal move to "if we did not find a magic string" clause
if we did not find a magic string
ask user about his journal
try to find a jhead and comare dev, size, offset there
if params are not equal exit with error
*/
p_jp_journal_1st_block = get_journal_start_must(fs);
if (standard_journal == 1) {
if (get_jp_journal_dev(sb_jp(sb)) != 0) {
fsck_conditional_log(magic_was_found,
"rebuild-sb: wrong journal device "
"occured (%lu), fixed (0)\n",
get_jp_journal_dev(sb_jp(sb)));
set_jp_journal_dev(sb_jp(sb), 0);
}
if (get_sb_reserved_for_journal(sb) != 0) {
fsck_log
("rebuild-sb: wrong size reserved for default journal occured "
"(%lu), fixed (0)\n",
get_sb_reserved_for_journal(sb));
set_sb_reserved_for_journal(sb, 0);
}
if (get_jp_journal_1st_block(sb_jp(sb)) !=
p_jp_journal_1st_block) {
fsck_conditional_log(magic_was_found,
"rebuild-sb: wrong journal first "
"block occured (%lu), fixed (%lu)\n",
get_jp_journal_1st_block(sb_jp
(sb)),
p_jp_journal_1st_block);
set_jp_journal_1st_block(sb_jp(sb),
p_jp_journal_1st_block);
}
if (get_jp_journal_size(sb_jp(sb)) !=
journal_default_size(fs->fs_super_bh->b_blocknr,
fs->fs_blocksize)) {
fsck_conditional_log(magic_was_found,
"rebuild-sb: wrong journal size "
"occured (%lu), fixed (%lu)\n",
get_jp_journal_size(sb_jp(sb)) + 1,
journal_default_size(fs->
fs_super_bh->
b_blocknr,
fs->
fs_blocksize)
+ 1);
set_jp_journal_size(sb_jp(sb),
journal_default_size(fs->
fs_super_bh->
b_blocknr,
fs->
fs_blocksize));
}
if ((retval =
reiserfs_open_journal(fs, filename,
O_RDWR | O_LARGEFILE))) {
fsck_log
("\nrebuild-sb: Failed to open the journal device (%s).\n",
filename);
exit(retval < 0 ? EXIT_OPER : EXIT_USER);
}
} else if (!fsck_skip_journal(fs)) {
/* Check that specified non-standard journal device exists. */
journal_dev_name = fsck_data(fs)->journal_dev_name;
retval = stat(journal_dev_name, &stat_buf);
if (retval == -1)
reiserfs_exit(EXIT_USER,
"rebuild_sb: error while detecting the "
"specified journal device (%s): %s\n",
journal_dev_name, strerror(errno));
retval = 0;
if (magic_was_found) {
/* Super block was found. Try to open the journal on the base of its
* journal parameters. */
retval = reiserfs_open_journal(fs, journal_dev_name,
O_RDWR | O_LARGEFILE);
if (retval == 0) {
j_head =
(struct reiserfs_journal_header *)(fs->
fs_jh_bh->
b_data);
retval =
memcmp(&j_head->jh_journal, sb_jp(sb),
sizeof(struct journal_params));
if (retval) {
/* journal parameters from the SB and from the J_Header does not
* match. Close the jouranl, ask the user about correct journal
* parameters. */
reiserfs_close_journal(fs);
}
}
if (!reiserfs_journal_opened(fs)) {
fsck_log
("Journal cannot be opened, assuming specified "
"journal device is correct\n");
}
}
if (!reiserfs_journal_opened(fs)) {
__u64 default_value;
/* journal was not found or SB and J_Header parameters does not match. */
if (magic_was_found == 0)
default_value =
(!strcmp
(fs->fs_file_name,
journal_dev_name)) ?
p_jp_journal_1st_block : 0;
else
default_value =
get_jp_journal_1st_block(sb_jp(sb));
printf
("\nEnter journal offset on %s in blocks [%Lu]: \n",
journal_dev_name,
(unsigned long long)default_value);
getline(&answer, &n, stdin);
if (strcmp(answer, "\n")) {
retval = (int)strtol(answer, &tmp, 0);
if ((*tmp && strcmp(tmp, "\n")) || retval < 0)
reiserfs_exit(EXIT_USER,
"rebuild_sb: wrong offset specified\n");
set_jp_journal_1st_block(sb_jp(sb), retval);
} else
set_jp_journal_1st_block(sb_jp(sb),
default_value);
if (!
(p_jp_dev_size =
count_blocks(journal_dev_name, fs->fs_blocksize)))
exit(EXIT_OPER);
/* some checks for journal offset */
if (strcmp(fs->fs_file_name, journal_dev_name) != 0) {
if (p_jp_dev_size <
get_jp_journal_1st_block(sb_jp(sb)) + 1)
reiserfs_exit(EXIT_USER,
"rebuild_sb: offset is much than device size\n");
}
/* default size if magic was not found is device size - journal_1st_block;
default size if magic was found is found value + 1 block for journal
header */
if (magic_was_found == 0)
default_value =
(!strcmp
(fs->fs_file_name,
journal_dev_name)) ?
journal_default_size(fs->fs_super_bh->
b_blocknr,
fs->fs_blocksize) +
1 : p_jp_dev_size -
get_jp_journal_1st_block(sb_jp(sb));
else
default_value =
get_jp_journal_size(sb_jp(sb)) + 1;
printf
("\nEnter journal size (including 1 block for journal header) on "
"%s in blocks [%Lu]: \n", journal_dev_name,
(unsigned long long)default_value);
getline(&answer, &n, stdin);
if (strcmp(answer, "\n")) {
retval = (int)strtol(answer, &tmp, 0);
if ((*tmp && strcmp(tmp, "\n")) || retval < 0)
reiserfs_exit(EXIT_USER,
"rebuild_sb: wrong offset specified\n");
set_jp_journal_size(sb_jp(sb), retval - 1);
} else {
set_jp_journal_size(sb_jp(sb),
default_value - 1);
}
/* some checks for journal size */
if (get_jp_journal_size(sb_jp(sb)) +
get_jp_journal_1st_block(sb_jp(sb)) + 1 >
p_jp_dev_size)
reiserfs_exit(EXIT_USER,
"rebuild_sb: journal offset + journal size is "
"greater than device size\n");
/* some checks for journal size */
if (get_jp_journal_size(sb_jp(sb)) < JOURNAL_MIN_SIZE)
reiserfs_exit(EXIT_USER,
"rebuild_sb: journal size cannot be less than "
"%lu blocks.\n",
JOURNAL_MIN_SIZE + 1);
if ((retval =
reiserfs_open_journal(fs, journal_dev_name,
O_RDWR | O_LARGEFILE))) {
fsck_log
("\nrebuild-sb: Failed to open a journal device (%s).",
journal_dev_name);
exit(retval < 0 ? EXIT_OPER : EXIT_USER);
}
/* SB was found, but journal params were broken and have been recovered.
* Futher work goes as SB would not be found. */
magic_was_found = 0;
}
if (strcmp(fs->fs_file_name, journal_dev_name))
set_jp_journal_dev(sb_jp(sb), stat_buf.st_rdev);
else
set_jp_journal_dev(sb_jp(sb), 0);
} else {
fsck_log
("\nJournal was specified as not available. reiserfstune is "
"needed.\n\n");
set_jp_journal_magic(sb_jp(sb), NEED_TUNE);
}
if (reiserfs_journal_opened(fs)) {
/* Journal was openned. Check/fix journal parameters and copy it the journal
* header. */
if (get_jp_journal_max_trans_len(sb_jp(sb)) !=
advise_journal_max_trans_len(get_jp_journal_max_trans_len
(sb_jp(sb)),
get_jp_journal_size(sb_jp(sb)),
fs->fs_blocksize, 0)) {
fsck_conditional_log(magic_was_found,
"rebuild-sb: wrong journal max "
"transaction length occured (%lu), fixed (%d)\n",
get_jp_journal_max_trans_len(sb_jp
(sb)),
advise_journal_max_trans_len
(get_jp_journal_max_trans_len
(sb_jp(sb)),
get_jp_journal_size(sb_jp(sb)),
fs->fs_blocksize, 0));
set_jp_journal_max_trans_len(sb_jp(sb),
advise_journal_max_trans_len
(get_jp_journal_max_trans_len
(sb_jp(sb)),
get_jp_journal_size(sb_jp
(sb)),
fs->fs_blocksize, 0));
}
if (get_jp_journal_max_batch(sb_jp(sb)) !=
advise_journal_max_batch(get_jp_journal_max_trans_len
(sb_jp(sb)))) {
fsck_conditional_log(magic_was_found,
"rebuild-sb: wrong journal max "
"batch size occured (%lu), fixed (%d)\n",
get_jp_journal_max_batch(sb_jp
(sb)),
advise_journal_max_batch
(get_jp_journal_max_trans_len
(sb_jp(sb))));
set_jp_journal_max_batch(sb_jp(sb),
advise_journal_max_batch
(get_jp_journal_max_trans_len
(sb_jp(sb))));
}
if (get_jp_journal_max_commit_age(sb_jp(sb)) !=
advise_journal_max_commit_age()) {
fsck_conditional_log(magic_was_found,
"rebuild-sb: wrong journal "
"max commit age occured (%lu), fixed (%d)\n",
get_jp_journal_max_commit_age(sb_jp
(sb)),
advise_journal_max_commit_age());
set_jp_journal_max_commit_age(sb_jp(sb),
advise_journal_max_commit_age
());
}
if (get_jp_journal_max_trans_age(sb_jp(sb)) !=
advise_journal_max_trans_age()) {
fsck_log
("rebuild-sb: wrong journal max commit age occured (%u), "
"fixed (%u)\n",
get_jp_journal_max_trans_age(sb_jp(sb)),
advise_journal_max_trans_age());
set_jp_journal_max_trans_age(sb_jp(sb),
advise_journal_max_trans_age
());
}
j_head =
(struct reiserfs_journal_header *)(fs->fs_jh_bh->b_data);
if (standard_journal == 0) {
if (get_jp_journal_magic(sb_jp(sb)) == 0 ||
get_jp_journal_magic(sb_jp(sb)) == NEED_TUNE) {
int magic;
magic = random();
fsck_log
("rebuild-sb: genarate the new journal magic (%d)\n",
magic);
set_jp_journal_magic(sb_jp(sb), magic);
set_jp_journal_magic(&j_head->jh_journal,
magic);
}
}
retval =
memcmp(&j_head->jh_journal, sb_jp(sb),
sizeof(struct journal_params));
if (retval) {
if (standard_journal == 1) {
fsck_log
("\nrebuild-sb: You either have a corrupted journal or have just "
"changed\nthe start of the partition with some partition table editor. "
"If you are\nsure that the start of the partition is ok, rebuild the "
"journal header.\n");
} else if (!magic_was_found) {
fsck_log
("\nrebuild-sb: journal header is not found. You either have "
"a corrupted,\nbad configured(device/offset/size), not available "
"journal or have just changed\nthe start of the journal partition "
"with some partition table editor. In the \ncase of corrupted "
"journal you need to use --no-journal-available. If you are\n"
"sure that the start of the partition is ok and journal is "
"available, rebuild\nthe journal header.\n");
}
if (standard_journal || !magic_was_found) {
if (!user_confirmed
(stdout,
"Do you want to rebuild the journal header? "
"(y/n)[n]: ", "y\n")) {
exit(EXIT_USER);
} else
exit_code = EXIT_FIXED;
}
memcpy(&j_head->jh_journal, sb_jp(sb),
sizeof(struct journal_params));
mark_buffer_dirty(fs->fs_jh_bh);
bwrite(fs->fs_jh_bh);
}
}
/* whether journal header contains params with the same dev, offset, size will be
checked in open_journal */
if (version == 1 || version == 3)
sb_size = SB_SIZE;
else
sb_size = SB_SIZE_V1;
if (ondisk_sb == NULL ||
memcmp(ondisk_sb, sb, sb_size - ((sb_size == SB_SIZE) ?
sizeof(fs->fs_ondisk_sb->
s_unused) : 0))) {
/* smth was changed in SB or a new one has been built */
set_sb_fs_state(sb, get_sb_fs_state(sb) | FS_ERROR);
if (ondisk_sb) {
/* if super_block was found, we keep sb in ondisk_sb */
fs->fs_ondisk_sb = ondisk_sb;
memcpy(ondisk_sb, sb, sb_size);
freemem(sb);
}
fflush(stdout);
print_block(stderr, fs, fs->fs_super_bh);
if (user_confirmed(stderr, "Is this ok ? (y/n)[n]: ", "y\n")) {
mark_buffer_uptodate(fs->fs_super_bh, 1);
mark_buffer_dirty(fs->fs_super_bh);
bwrite(fs->fs_super_bh);
fsck_progress
("The fs may still be unconsistent. Run reiserfsck --check.\n\n");
exit_code = EXIT_FIXED;
} else {
mark_buffer_clean(fs->fs_super_bh);
fsck_progress("Super block was not written\n");
}
} else {
print_block(stderr, fs, fs->fs_super_bh);
mark_buffer_clean(fs->fs_super_bh);
fsck_progress("\nSuper block seems to be correct\n\n");
}
exit(exit_code);
}
/* if (version == 0) {
brelse (fs->fs_super_bh);
freemem (fs);
close (fs->fs_dev);
fs = NULL;
}
*/
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