/*
* This fuction deallocates an inode
*/
static void deallocate_inode(e2fsck_t ctx, ext2_ino_t ino, char* block_buf)
{
ext2_filsys fs = ctx->fs;
struct ext2_inode inode;
struct problem_context pctx;
__u32 count;
struct del_block del_block;
e2fsck_read_inode(ctx, ino, &inode, "deallocate_inode");
e2fsck_clear_inode(ctx, ino, &inode, 0, "deallocate_inode");
clear_problem_context(&pctx);
pctx.ino = ino;
/*
* Fix up the bitmaps...
*/
e2fsck_read_bitmaps(ctx);
ext2fs_inode_alloc_stats2(fs, ino, -1, LINUX_S_ISDIR(inode.i_mode));
if (ext2fs_file_acl_block(fs, &inode) &&
(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR)) {
pctx.errcode = ext2fs_adjust_ea_refcount3(fs,
ext2fs_file_acl_block(fs, &inode),
block_buf, -1, &count, ino);
if (pctx.errcode == EXT2_ET_BAD_EA_BLOCK_NUM) {
pctx.errcode = 0;
count = 1;
}
if (pctx.errcode) {
pctx.blk = ext2fs_file_acl_block(fs, &inode);
fix_problem(ctx, PR_2_ADJ_EA_REFCOUNT, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
return;
}
if (count == 0) {
ext2fs_unmark_block_bitmap2(ctx->block_found_map,
ext2fs_file_acl_block(fs, &inode));
ext2fs_block_alloc_stats2(fs,
ext2fs_file_acl_block(fs, &inode), -1);
}
ext2fs_file_acl_block_set(fs, &inode, 0);
}
if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
return;
if (LINUX_S_ISREG(inode.i_mode) && EXT2_I_SIZE(&inode) >= 0x80000000UL)
ctx->large_files--;
del_block.ctx = ctx;
del_block.num = 0;
pctx.errcode = ext2fs_block_iterate3(fs, ino, 0, block_buf,
deallocate_inode_block,
&del_block);
if (pctx.errcode) {
fix_problem(ctx, PR_2_DEALLOC_INODE, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
return;
}
}
static int duplicate_search_and_fix(e2fsck_t ctx, ext2_filsys fs,
ext2_ino_t ino,
struct fill_dir_struct *fd)
{
struct problem_context pctx;
struct hash_entry *ent, *prev;
int i, j;
int fixed = 0;
char new_name[256];
__u16 new_len;
clear_problem_context(&pctx);
pctx.ino = ino;
for (i=1; i < fd->num_array; i++) {
ent = fd->harray + i;
prev = ent - 1;
if (!ent->dir->inode ||
((ent->dir->name_len & 0xFF) !=
(prev->dir->name_len & 0xFF)) ||
(strncmp(ent->dir->name, prev->dir->name,
ent->dir->name_len & 0xFF)))
continue;
pctx.dirent = ent->dir;
if ((ent->dir->inode == prev->dir->inode) &&
fix_problem(ctx, PR_2_DUPLICATE_DIRENT, &pctx)) {
e2fsck_adjust_inode_count(ctx, ent->dir->inode, -1);
ent->dir->inode = 0;
fixed++;
continue;
}
memcpy(new_name, ent->dir->name, ent->dir->name_len & 0xFF);
new_len = ent->dir->name_len;
mutate_name(new_name, &new_len);
for (j=0; j < fd->num_array; j++) {
if ((i==j) ||
((ent->dir->name_len & 0xFF) !=
(fd->harray[j].dir->name_len & 0xFF)) ||
(strncmp(new_name, fd->harray[j].dir->name,
new_len & 0xFF)))
continue;
mutate_name(new_name, &new_len);
j = -1;
}
new_name[new_len & 0xFF] = 0;
pctx.str = new_name;
if (fix_problem(ctx, PR_2_NON_UNIQUE_FILE, &pctx)) {
memcpy(ent->dir->name, new_name, new_len & 0xFF);
ent->dir->name_len = new_len;
ext2fs_dirhash(fs->super->s_def_hash_version,
ent->dir->name,
ent->dir->name_len & 0xFF,
fs->super->s_hash_seed,
&ent->hash, &ent->minor_hash);
fixed++;
}
}
return fixed;
}
/*
* This routine is called when an inode is not connected to the
* directory tree.
*
* This subroutine returns 1 then the caller shouldn't bother with the
* rest of the pass 4 tests.
*/
static int disconnect_inode(e2fsck_t ctx, ext2_ino_t i,
struct ext2_inode *inode)
{
ext2_filsys fs = ctx->fs;
struct problem_context pctx;
__u32 eamagic = 0;
int extra_size = 0;
if (EXT2_INODE_SIZE(fs->super) > EXT2_GOOD_OLD_INODE_SIZE) {
e2fsck_read_inode_full(ctx, i, inode,EXT2_INODE_SIZE(fs->super),
"pass4: disconnect_inode");
extra_size = ((struct ext2_inode_large *)inode)->i_extra_isize;
} else {
e2fsck_read_inode(ctx, i, inode, "pass4: disconnect_inode");
}
clear_problem_context(&pctx);
pctx.ino = i;
pctx.inode = inode;
if (EXT2_INODE_SIZE(fs->super) -EXT2_GOOD_OLD_INODE_SIZE -extra_size >0)
eamagic = *(__u32 *)(((char *)inode) +EXT2_GOOD_OLD_INODE_SIZE +
extra_size);
/*
* Offer to delete any zero-length files that does not have
* blocks. If there is an EA block, it might have useful
* information, so we won't prompt to delete it, but let it be
* reconnected to lost+found.
*/
if (!inode->i_blocks && eamagic != EXT2_EXT_ATTR_MAGIC &&
(LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode))) {
if (fix_problem(ctx, PR_4_ZERO_LEN_INODE, &pctx)) {
e2fsck_clear_inode(ctx, i, inode, 0,
"disconnect_inode");
/*
* Fix up the bitmaps...
*/
e2fsck_read_bitmaps(ctx);
ext2fs_inode_alloc_stats2(fs, i, -1,
LINUX_S_ISDIR(inode->i_mode));
return 0;
}
}
/*
* Prompt to reconnect.
*/
if (fix_problem(ctx, PR_4_UNATTACHED_INODE, &pctx)) {
if (e2fsck_reconnect_file(ctx, i))
ext2fs_unmark_valid(fs);
} else {
/*
* If we don't attach the inode, then skip the
* i_links_test since there's no point in trying to
* force i_links_count to zero.
*/
ext2fs_unmark_valid(fs);
return 1;
}
return 0;
}
void e2fsck_hide_quota(e2fsck_t ctx)
{
struct ext2_super_block *sb = ctx->fs->super;
struct problem_context pctx;
ext2_filsys fs = ctx->fs;
clear_problem_context(&pctx);
if ((ctx->options & E2F_OPT_READONLY) ||
!(sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA))
return;
pctx.ino = sb->s_usr_quota_inum;
if (sb->s_usr_quota_inum &&
(sb->s_usr_quota_inum != EXT4_USR_QUOTA_INO) &&
fix_problem(ctx, PR_0_HIDE_QUOTA, &pctx)) {
move_quota_inode(fs, sb->s_usr_quota_inum, EXT4_USR_QUOTA_INO,
USRQUOTA);
sb->s_usr_quota_inum = EXT4_USR_QUOTA_INO;
}
pctx.ino = sb->s_grp_quota_inum;
if (sb->s_grp_quota_inum &&
(sb->s_grp_quota_inum != EXT4_GRP_QUOTA_INO) &&
fix_problem(ctx, PR_0_HIDE_QUOTA, &pctx)) {
move_quota_inode(fs, sb->s_grp_quota_inum, EXT4_GRP_QUOTA_INO,
GRPQUOTA);
sb->s_grp_quota_inum = EXT4_GRP_QUOTA_INO;
}
return;
}
/*
* This function makes sure the superblock hint for the external
* journal is correct.
*/
int e2fsck_fix_ext3_journal_hint(e2fsck_t ctx)
{
struct ext2_super_block *sb = ctx->fs->super;
struct problem_context pctx;
char uuid[37], *journal_name;
struct stat st;
problem_t problem;
int retval;
if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) ||
uuid_is_null(sb->s_journal_uuid))
return 0;
uuid_unparse(sb->s_journal_uuid, uuid);
journal_name = blkid_get_devname(ctx->blkid, "UUID", uuid);
if (!journal_name)
return 0;
if (stat(journal_name, &st) < 0)
return 0;
if (st.st_rdev != sb->s_journal_dev) {
clear_problem_context(&pctx);
pctx.num = st.st_rdev;
if (fix_problem(ctx, PR_0_EXTERNAL_JOURNAL_HINT, &pctx)) {
sb->s_journal_dev = st.st_rdev;
ext2fs_mark_super_dirty(ctx->fs);
}
}
free(journal_name);
return 0;
}
void e2fsck_hide_quota(e2fsck_t ctx)
{
struct ext2_super_block *sb = ctx->fs->super;
struct problem_context pctx;
ext2_filsys fs = ctx->fs;
enum quota_type qtype;
ext2_ino_t quota_ino;
clear_problem_context(&pctx);
if ((ctx->options & E2F_OPT_READONLY) ||
!ext2fs_has_feature_quota(sb))
return;
for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
pctx.ino = *quota_sb_inump(sb, qtype);
quota_ino = quota_type2inum(qtype, fs->super);
if (pctx.ino && (pctx.ino != quota_ino) &&
fix_problem(ctx, PR_0_HIDE_QUOTA, &pctx)) {
move_quota_inode(fs, pctx.ino, quota_ino, qtype);
*quota_sb_inump(sb, qtype) = quota_ino;
}
}
return;
}
static void check_block_bitmap_checksum(e2fsck_t ctx)
{
struct problem_context pctx;
char *buf;
dgrp_t i;
int nbytes;
blk64_t blk_itr;
errcode_t retval;
if (!EXT2_HAS_RO_COMPAT_FEATURE(ctx->fs->super,
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
return;
/* If bitmap is dirty from being fixed, checksum will be corrected */
if (ext2fs_test_bb_dirty(ctx->fs))
return;
nbytes = (size_t)(EXT2_CLUSTERS_PER_GROUP(ctx->fs->super) / 8);
retval = ext2fs_get_memalign(ctx->fs->blocksize, ctx->fs->blocksize,
&buf);
if (retval) {
com_err(ctx->program_name, 0,
_("check_block_bitmap_checksum: Memory allocation error"));
fatal_error(ctx, 0);
}
clear_problem_context(&pctx);
for (i = 0; i < ctx->fs->group_desc_count; i++) {
if (ext2fs_bg_flags_test(ctx->fs, i, EXT2_BG_BLOCK_UNINIT))
continue;
blk_itr = EXT2FS_B2C(ctx->fs,
ctx->fs->super->s_first_data_block) +
(i * (nbytes << 3));
retval = ext2fs_get_block_bitmap_range2(ctx->fs->block_map,
blk_itr, nbytes << 3,
buf);
if (retval)
break;
if (ext2fs_block_bitmap_csum_verify(ctx->fs, i, buf, nbytes))
continue;
pctx.group = i;
if (!fix_problem(ctx, PR_5_BLOCK_BITMAP_CSUM_INVALID, &pctx))
continue;
/*
* Fixing one checksum will rewrite all of them. The bitmap
* will be checked against the one we made during pass1 for
* discrepancies, and fixed if need be.
*/
ext2fs_mark_bb_dirty(ctx->fs);
break;
}
ext2fs_free_mem(&buf);
}
/*
* This routine is called when an inode is not connected to the
* directory tree.
*
* This subroutine returns 1 then the caller shouldn't bother with the
* rest of the pass 4 tests.
*/
static int disconnect_inode(e2fsck_t ctx, ext2_ino_t i)
{
ext2_filsys fs = ctx->fs;
struct ext2_inode inode;
struct problem_context pctx;
e2fsck_read_inode(ctx, i, &inode, "pass4: disconnect_inode");
clear_problem_context(&pctx);
pctx.ino = i;
pctx.inode = &inode;
/*
* Offer to delete any zero-length files that does not have
* blocks. If there is an EA block, it might have useful
* information, so we won't prompt to delete it, but let it be
* reconnected to lost+found.
*/
if (!inode.i_blocks && (LINUX_S_ISREG(inode.i_mode) ||
LINUX_S_ISDIR(inode.i_mode))) {
if (fix_problem(ctx, PR_4_ZERO_LEN_INODE, &pctx)) {
ext2fs_icount_store(ctx->inode_link_info, i, 0);
inode.i_links_count = 0;
inode.i_dtime = ctx->now;
e2fsck_write_inode(ctx, i, &inode,
"disconnect_inode");
/*
* Fix up the bitmaps...
*/
e2fsck_read_bitmaps(ctx);
ext2fs_unmark_inode_bitmap(ctx->inode_used_map, i);
ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, i);
ext2fs_inode_alloc_stats2(fs, i, -1,
LINUX_S_ISDIR(inode.i_mode));
return 0;
}
}
/*
* Prompt to reconnect.
*/
if (fix_problem(ctx, PR_4_UNATTACHED_INODE, &pctx)) {
if (e2fsck_reconnect_file(ctx, i))
ext2fs_unmark_valid(fs);
} else {
/*
* If we don't attach the inode, then skip the
* i_links_test since there's no point in trying to
* force i_links_count to zero.
*/
ext2fs_unmark_valid(fs);
return 1;
}
return 0;
}
void e2fsck_pass5(e2fsck_t ctx)
{
#ifdef RESOURCE_TRACK
struct resource_track rtrack;
#endif
struct problem_context pctx;
#ifdef MTRACE
mtrace_print("Pass 5");
#endif
#ifdef RESOURCE_TRACK
init_resource_track(&rtrack);
#endif
clear_problem_context(&pctx);
if (!(ctx->options & E2F_OPT_PREEN))
fix_problem(ctx, PR_5_PASS_HEADER, &pctx);
if (ctx->progress)
if ((ctx->progress)(ctx, 5, 0, ctx->fs->group_desc_count*2))
return;
e2fsck_read_bitmaps(ctx);
check_block_bitmaps(ctx);
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
return;
check_inode_bitmaps(ctx);
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
return;
check_inode_end(ctx);
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
return;
check_block_end(ctx);
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
return;
ext2fs_free_inode_bitmap(ctx->inode_used_map);
ctx->inode_used_map = 0;
ext2fs_free_inode_bitmap(ctx->inode_dir_map);
ctx->inode_dir_map = 0;
ext2fs_free_block_bitmap(ctx->block_found_map);
ctx->block_found_map = 0;
#ifdef RESOURCE_TRACK
if (ctx->options & E2F_OPT_TIME2) {
e2fsck_clear_progbar(ctx);
print_resource_track(_("Pass 5"), &rtrack);
}
#endif
}
static void deallocate_inode(e2fsck_t ctx, ext2_ino_t ino, char* block_buf)
{
ext2_filsys fs = ctx->fs;
struct ext2_inode inode;
struct problem_context pctx;
__u32 count;
e2fsck_read_inode(ctx, ino, &inode, "deallocate_inode");
e2fsck_clear_inode(ctx, ino, &inode, 0, "deallocate_inode");
clear_problem_context(&pctx);
pctx.ino = ino;
e2fsck_read_bitmaps(ctx);
ext2fs_inode_alloc_stats2(fs, ino, -1, LINUX_S_ISDIR(inode.i_mode));
if (inode.i_file_acl &&
(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR)) {
pctx.errcode = ext2fs_adjust_ea_refcount(fs, inode.i_file_acl,
block_buf, -1, &count);
if (pctx.errcode == EXT2_ET_BAD_EA_BLOCK_NUM) {
pctx.errcode = 0;
count = 1;
}
if (pctx.errcode) {
pctx.blk = inode.i_file_acl;
fix_problem(ctx, PR_2_ADJ_EA_REFCOUNT, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
return;
}
if (count == 0) {
ext2fs_unmark_block_bitmap(ctx->block_found_map,
inode.i_file_acl);
ext2fs_block_alloc_stats(fs, inode.i_file_acl, -1);
}
inode.i_file_acl = 0;
}
if (!ext2fs_inode_has_valid_blocks(&inode))
return;
if (LINUX_S_ISREG(inode.i_mode) &&
(inode.i_size_high || inode.i_size & 0x80000000UL))
ctx->large_files--;
pctx.errcode = ext2fs_block_iterate2(fs, ino, 0, block_buf,
deallocate_inode_block, ctx);
if (pctx.errcode) {
fix_problem(ctx, PR_2_DEALLOC_INODE, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
return;
}
}
int end_problem_latch(e2fsck_t ctx, int mask)
{
struct latch_descr *ldesc;
struct problem_context pctx;
int answer = -1;
ldesc = find_latch(mask);
if (ldesc->end_message && (ldesc->flags & PRL_LATCHED)) {
clear_problem_context(&pctx);
answer = fix_problem(ctx, ldesc->end_message, &pctx);
}
ldesc->flags &= ~(PRL_VARIABLE);
return answer;
}
static void clear_v2_journal_fields(journal_t *journal)
{
e2fsck_t ctx = journal->j_dev->k_ctx;
struct problem_context pctx;
clear_problem_context(&pctx);
if (!fix_problem(ctx, PR_0_CLEAR_V2_JOURNAL, &pctx))
return;
memset(((char *) journal->j_superblock) + V1_SB_SIZE, 0,
ctx->fs->blocksize-V1_SB_SIZE);
mark_buffer_dirty(journal->j_sb_buffer);
}
static void check_super_value(e2fsck_t ctx, const char *descr,
unsigned long value, int flags,
unsigned long min_val, unsigned long max_val)
{
struct problem_context pctx;
if (((flags & MIN_CHECK) && (value < min_val)) ||
((flags & MAX_CHECK) && (value > max_val))) {
clear_problem_context(&pctx);
pctx.num = value;
pctx.str = descr;
fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx);
ctx->flags |= E2F_FLAG_ABORT; /* never get here! */
}
}
/*
* This fuction deallocates an inode
*/
static void deallocate_inode(e2fsck_t ctx, ext2_ino_t ino, char* block_buf)
{
ext2_filsys fs = ctx->fs;
struct ext2_inode inode;
struct problem_context pctx;
ext2fs_icount_store(ctx->inode_link_info, ino, 0);
e2fsck_read_inode(ctx, ino, &inode, "deallocate_inode");
inode.i_links_count = 0;
inode.i_dtime = time(0);
e2fsck_write_inode(ctx, ino, &inode, "deallocate_inode");
clear_problem_context(&pctx);
pctx.ino = ino;
/*
* Fix up the bitmaps...
*/
e2fsck_read_bitmaps(ctx);
ext2fs_unmark_inode_bitmap(ctx->inode_used_map, ino);
ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino);
if (ctx->inode_bad_map)
ext2fs_unmark_inode_bitmap(ctx->inode_bad_map, ino);
ext2fs_unmark_inode_bitmap(fs->inode_map, ino);
ext2fs_mark_ib_dirty(fs);
if (!ext2fs_inode_has_valid_blocks(&inode))
return;
if (!LINUX_S_ISDIR(inode.i_mode) &&
(inode.i_size_high || inode.i_size & 0x80000000UL))
ctx->large_files--;
if (inode.i_file_acl) {
ext2fs_unmark_block_bitmap(ctx->block_found_map,
inode.i_file_acl);
ext2fs_unmark_block_bitmap(fs->block_map, inode.i_file_acl);
}
ext2fs_mark_bb_dirty(fs);
pctx.errcode = ext2fs_block_iterate2(fs, ino, 0, block_buf,
deallocate_inode_block, ctx);
if (pctx.errcode) {
fix_problem(ctx, PR_2_DEALLOC_INODE, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
return;
}
}
/*
* This routine will connect a file to lost+found
*/
int e2fsck_reconnect_file(e2fsck_t ctx, ext2_ino_t ino)
{
ext2_filsys fs = ctx->fs;
errcode_t retval;
char name[80];
struct problem_context pctx;
struct ext2_inode inode;
int file_type = 0;
clear_problem_context(&pctx);
pctx.ino = ino;
if (!ctx->bad_lost_and_found && !ctx->lost_and_found) {
if (e2fsck_get_lost_and_found(ctx, 1) == 0)
ctx->bad_lost_and_found++;
}
if (ctx->bad_lost_and_found) {
fix_problem(ctx, PR_3_NO_LPF, &pctx);
return 1;
}
sprintf(name, "#%u", ino);
if (ext2fs_read_inode(fs, ino, &inode) == 0)
file_type = ext2_file_type(inode.i_mode);
retval = ext2fs_link(fs, ctx->lost_and_found, name, ino, file_type);
if (retval == EXT2_ET_DIR_NO_SPACE) {
if (!fix_problem(ctx, PR_3_EXPAND_LF_DIR, &pctx))
return 1;
retval = e2fsck_expand_directory(ctx, ctx->lost_and_found,
1, 0);
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_CANT_EXPAND_LPF, &pctx);
return 1;
}
retval = ext2fs_link(fs, ctx->lost_and_found, name,
ino, file_type);
}
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_CANT_RECONNECT, &pctx);
return 1;
}
e2fsck_adjust_inode_count(ctx, ino, 1);
return 0;
}
static void check_block_end(e2fsck_t ctx)
{
ext2_filsys fs = ctx->fs;
blk64_t end, save_blocks_count, i;
struct problem_context pctx;
clear_problem_context(&pctx);
end = ext2fs_get_block_bitmap_start2(fs->block_map) +
((blk64_t)EXT2_CLUSTERS_PER_GROUP(fs->super) * fs->group_desc_count) - 1;
pctx.errcode = ext2fs_fudge_block_bitmap_end2(fs->block_map, end,
&save_blocks_count);
if (pctx.errcode) {
pctx.num = 3;
fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
ctx->flags |= E2F_FLAG_ABORT; /* fatal */
return;
}
if (save_blocks_count == end)
return;
/* Protect loop from wrap-around if end is maxed */
for (i = save_blocks_count + 1; i <= end && i > save_blocks_count; i++) {
if (!ext2fs_test_block_bitmap2(fs->block_map,
EXT2FS_C2B(fs, i))) {
if (fix_problem(ctx, PR_5_BLOCK_BMAP_PADDING, &pctx)) {
for (; i <= end; i++)
ext2fs_mark_block_bitmap2(fs->block_map,
EXT2FS_C2B(fs, i));
ext2fs_mark_bb_dirty(fs);
} else
ext2fs_unmark_valid(fs);
break;
}
}
pctx.errcode = ext2fs_fudge_block_bitmap_end2(fs->block_map,
save_blocks_count, 0);
if (pctx.errcode) {
pctx.num = 4;
fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
ctx->flags |= E2F_FLAG_ABORT; /* fatal */
return;
}
}
static void check_inode_end(e2fsck_t ctx)
{
ext2_filsys fs = ctx->fs;
ext2_ino_t end, save_inodes_count, i;
struct problem_context pctx;
clear_problem_context(&pctx);
end = EXT2_INODES_PER_GROUP(fs->super) * fs->group_desc_count;
pctx.errcode = ext2fs_fudge_inode_bitmap_end(fs->inode_map, end,
&save_inodes_count);
if (pctx.errcode) {
pctx.num = 1;
fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
ctx->flags |= E2F_FLAG_ABORT; /* fatal */
return;
}
if (save_inodes_count == end)
return;
/* protect loop from wrap-around if end is maxed */
for (i = save_inodes_count + 1; i <= end && i > save_inodes_count; i++) {
if (!ext2fs_test_inode_bitmap(fs->inode_map, i)) {
if (fix_problem(ctx, PR_5_INODE_BMAP_PADDING, &pctx)) {
for (; i <= end; i++)
ext2fs_mark_inode_bitmap(fs->inode_map,
i);
ext2fs_mark_ib_dirty(fs);
} else
ext2fs_unmark_valid(fs);
break;
}
}
pctx.errcode = ext2fs_fudge_inode_bitmap_end(fs->inode_map,
save_inodes_count, 0);
if (pctx.errcode) {
pctx.num = 2;
fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
ctx->flags |= E2F_FLAG_ABORT; /* fatal */
return;
}
}
static errcode_t recover_ext3_journal(e2fsck_t ctx)
{
struct problem_context pctx;
journal_t *journal;
int retval;
clear_problem_context(&pctx);
journal_init_revoke_caches();
retval = e2fsck_get_journal(ctx, &journal);
if (retval)
return retval;
retval = e2fsck_journal_load(journal);
if (retval)
goto errout;
retval = journal_init_revoke(journal, 1024);
if (retval)
goto errout;
retval = -journal_recover(journal);
if (retval)
goto errout;
if (journal->j_failed_commit) {
pctx.ino = journal->j_failed_commit;
fix_problem(ctx, PR_0_JNL_TXN_CORRUPT, &pctx);
journal->j_superblock->s_errno = -EINVAL;
mark_buffer_dirty(journal->j_sb_buffer);
}
errout:
journal_destroy_revoke(journal);
journal_destroy_revoke_caches();
e2fsck_journal_release(ctx, journal, 1, 0);
return retval;
}
/*
* This routine gets the lost_and_found inode, making it a directory
* if necessary
*/
ext2_ino_t e2fsck_get_lost_and_found(e2fsck_t ctx, int fix)
{
ext2_filsys fs = ctx->fs;
ext2_ino_t ino;
blk64_t blk;
errcode_t retval;
struct ext2_inode inode;
char * block;
static const char name[] = "lost+found";
struct problem_context pctx;
if (ctx->lost_and_found)
return ctx->lost_and_found;
clear_problem_context(&pctx);
retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name,
sizeof(name)-1, 0, &ino);
if (retval && !fix)
return 0;
if (!retval) {
if (ext2fs_check_directory(fs, ino) == 0) {
ctx->lost_and_found = ino;
return ino;
}
/* Lost+found isn't a directory! */
if (!fix)
return 0;
pctx.ino = ino;
if (!fix_problem(ctx, PR_3_LPF_NOTDIR, &pctx))
return 0;
/* OK, unlink the old /lost+found file. */
pctx.errcode = ext2fs_unlink(fs, EXT2_ROOT_INO, name, ino, 0);
if (pctx.errcode) {
pctx.str = "ext2fs_unlink";
fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
return 0;
}
(void) e2fsck_dir_info_set_parent(ctx, ino, 0);
e2fsck_adjust_inode_count(ctx, ino, -1);
} else if (retval != EXT2_ET_FILE_NOT_FOUND) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_FIND_LPF, &pctx);
}
if (!fix_problem(ctx, PR_3_NO_LF_DIR, 0))
return 0;
/*
* Read the inode and block bitmaps in; we'll be messing with
* them.
*/
e2fsck_read_bitmaps(ctx);
/*
* First, find a free block
*/
retval = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_LPF_NEW_BLOCK, &pctx);
return 0;
}
ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
ext2fs_block_alloc_stats2(fs, blk, +1);
/*
* Next find a free inode.
*/
retval = ext2fs_new_inode(fs, EXT2_ROOT_INO, 040700,
ctx->inode_used_map, &ino);
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_LPF_NEW_INODE, &pctx);
return 0;
}
ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
/*
* Now let's create the actual data block for the inode
*/
retval = ext2fs_new_dir_block(fs, ino, EXT2_ROOT_INO, &block);
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_LPF_NEW_DIR_BLOCK, &pctx);
return 0;
}
retval = ext2fs_write_dir_block4(fs, blk, block, 0, ino);
ext2fs_free_mem(&block);
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_ERR_LPF_WRITE_BLOCK, &pctx);
return 0;
}
/*
* Set up the inode structure
*/
memset(&inode, 0, sizeof(inode));
inode.i_mode = 040700;
inode.i_size = fs->blocksize;
inode.i_atime = inode.i_ctime = inode.i_mtime = ctx->now;
inode.i_links_count = 2;
ext2fs_iblk_set(fs, &inode, 1);
inode.i_block[0] = blk;
/*
* Next, write out the inode.
*/
pctx.errcode = ext2fs_write_new_inode(fs, ino, &inode);
if (pctx.errcode) {
pctx.str = "ext2fs_write_inode";
fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
return 0;
}
/*
* Finally, create the directory link
*/
pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino, EXT2_FT_DIR);
if (pctx.errcode) {
pctx.str = "ext2fs_link";
fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
return 0;
}
/*
* Miscellaneous bookkeeping that needs to be kept straight.
*/
e2fsck_add_dir_info(ctx, ino, EXT2_ROOT_INO);
e2fsck_adjust_inode_count(ctx, EXT2_ROOT_INO, 1);
ext2fs_icount_store(ctx->inode_count, ino, 2);
ext2fs_icount_store(ctx->inode_link_info, ino, 2);
ctx->lost_and_found = ino;
quota_data_add(ctx->qctx, &inode, ino, fs->blocksize);
quota_data_inodes(ctx->qctx, &inode, ino, +1);
#if 0
printf("/lost+found created; inode #%lu\n", ino);
#endif
return ino;
}
void e2fsck_move_ext3_journal(e2fsck_t ctx)
{
struct ext2_super_block *sb = ctx->fs->super;
struct problem_context pctx;
struct ext2_inode inode;
ext2_filsys fs = ctx->fs;
ext2_ino_t ino;
errcode_t retval;
const char * const * cpp;
int group, mount_flags;
clear_problem_context(&pctx);
/*
* If the filesystem is opened read-only, or there is no
* journal, then do nothing.
*/
if ((ctx->options & E2F_OPT_READONLY) ||
(sb->s_journal_inum == 0) ||
!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL))
return;
/*
* Read in the journal inode
*/
if (ext2fs_read_inode(fs, sb->s_journal_inum, &inode) != 0)
return;
/*
* If it's necessary to backup the journal inode, do so.
*/
if ((sb->s_jnl_backup_type == 0) ||
((sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) &&
memcmp(inode.i_block, sb->s_jnl_blocks, EXT2_N_BLOCKS*4))) {
if (fix_problem(ctx, PR_0_BACKUP_JNL, &pctx)) {
memcpy(sb->s_jnl_blocks, inode.i_block,
EXT2_N_BLOCKS*4);
sb->s_jnl_blocks[16] = inode.i_size;
sb->s_jnl_backup_type = EXT3_JNL_BACKUP_BLOCKS;
ext2fs_mark_super_dirty(fs);
fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
}
}
/*
* If the journal is already the hidden inode, then do nothing
*/
if (sb->s_journal_inum == EXT2_JOURNAL_INO)
return;
/*
* The journal inode had better have only one link and not be readable.
*/
if (inode.i_links_count != 1)
return;
/*
* If the filesystem is mounted, or we can't tell whether
* or not it's mounted, do nothing.
*/
retval = ext2fs_check_if_mounted(ctx->filesystem_name, &mount_flags);
if (retval || (mount_flags & EXT2_MF_MOUNTED))
return;
/*
* If we can't find the name of the journal inode, then do
* nothing.
*/
for (cpp = journal_names; *cpp; cpp++) {
retval = ext2fs_lookup(fs, EXT2_ROOT_INO, *cpp,
strlen(*cpp), 0, &ino);
if ((retval == 0) && (ino == sb->s_journal_inum))
break;
}
if (*cpp == 0)
return;
/* We need the inode bitmap to be loaded */
retval = ext2fs_read_bitmaps(fs);
if (retval)
return;
pctx.str = *cpp;
if (!fix_problem(ctx, PR_0_MOVE_JOURNAL, &pctx))
return;
/*
* OK, we've done all the checks, let's actually move the
* journal inode. Errors at this point mean we need to force
* an ext2 filesystem check.
*/
if ((retval = ext2fs_unlink(fs, EXT2_ROOT_INO, *cpp, ino, 0)) != 0)
goto err_out;
if ((retval = ext2fs_write_inode(fs, EXT2_JOURNAL_INO, &inode)) != 0)
goto err_out;
sb->s_journal_inum = EXT2_JOURNAL_INO;
ext2fs_mark_super_dirty(fs);
fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
inode.i_links_count = 0;
inode.i_dtime = ctx->now;
if ((retval = ext2fs_write_inode(fs, ino, &inode)) != 0)
goto err_out;
group = ext2fs_group_of_ino(fs, ino);
ext2fs_unmark_inode_bitmap(fs->inode_map, ino);
ext2fs_mark_ib_dirty(fs);
fs->group_desc[group].bg_free_inodes_count++;
fs->super->s_free_inodes_count++;
return;
err_out:
pctx.errcode = retval;
fix_problem(ctx, PR_0_ERR_MOVE_JOURNAL, &pctx);
fs->super->s_state &= ~EXT2_VALID_FS;
ext2fs_mark_super_dirty(fs);
return;
}
/*
* This function makes sure that the superblock fields regarding the
* journal are consistent.
*/
int e2fsck_check_ext3_journal(e2fsck_t ctx)
{
struct ext2_super_block *sb = ctx->fs->super;
journal_t *journal;
int recover = ctx->fs->super->s_feature_incompat &
EXT3_FEATURE_INCOMPAT_RECOVER;
struct problem_context pctx;
problem_t problem;
int reset = 0, force_fsck = 0;
int retval;
/* If we don't have any journal features, don't do anything more */
if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
!recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 &&
uuid_is_null(sb->s_journal_uuid))
return 0;
clear_problem_context(&pctx);
pctx.num = sb->s_journal_inum;
retval = e2fsck_get_journal(ctx, &journal);
if (retval) {
if ((retval == EXT2_ET_BAD_INODE_NUM) ||
(retval == EXT2_ET_BAD_BLOCK_NUM) ||
(retval == EXT2_ET_JOURNAL_TOO_SMALL) ||
(retval == EXT2_ET_NO_JOURNAL))
return e2fsck_journal_fix_bad_inode(ctx, &pctx);
return retval;
}
retval = e2fsck_journal_load(journal);
if (retval) {
if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
((retval == EXT2_ET_UNSUPP_FEATURE) &&
(!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_INCOMPAT,
&pctx))) ||
((retval == EXT2_ET_RO_UNSUPP_FEATURE) &&
(!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_ROCOMPAT,
&pctx))) ||
((retval == EXT2_ET_JOURNAL_UNSUPP_VERSION) &&
(!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_VERSION, &pctx))))
retval = e2fsck_journal_fix_corrupt_super(ctx, journal,
&pctx);
e2fsck_journal_release(ctx, journal, 0, 1);
return retval;
}
/*
* We want to make the flags consistent here. We will not leave with
* needs_recovery set but has_journal clear. We can't get in a loop
* with -y, -n, or -p, only if a user isn't making up their mind.
*/
no_has_journal:
if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER;
pctx.str = "inode";
if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) {
if (recover &&
!fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx))
goto no_has_journal;
/*
* Need a full fsck if we are releasing a
* journal stored on a reserved inode.
*/
force_fsck = recover ||
(sb->s_journal_inum < EXT2_FIRST_INODE(sb));
/* Clear all of the journal fields */
sb->s_journal_inum = 0;
sb->s_journal_dev = 0;
memset(sb->s_journal_uuid, 0,
sizeof(sb->s_journal_uuid));
e2fsck_clear_recover(ctx, force_fsck);
} else if (!(ctx->options & E2F_OPT_READONLY)) {
sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL;
ext2fs_mark_super_dirty(ctx->fs);
}
}
if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL &&
!(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) &&
journal->j_superblock->s_start != 0) {
/* Print status information */
fix_problem(ctx, PR_0_JOURNAL_RECOVERY_CLEAR, &pctx);
if (ctx->superblock)
problem = PR_0_JOURNAL_RUN_DEFAULT;
else
problem = PR_0_JOURNAL_RUN;
if (fix_problem(ctx, problem, &pctx)) {
ctx->options |= E2F_OPT_FORCE;
sb->s_feature_incompat |=
EXT3_FEATURE_INCOMPAT_RECOVER;
ext2fs_mark_super_dirty(ctx->fs);
} else if (fix_problem(ctx,
PR_0_JOURNAL_RESET_JOURNAL, &pctx)) {
reset = 1;
sb->s_state &= ~EXT2_VALID_FS;
ext2fs_mark_super_dirty(ctx->fs);
}
/*
* If the user answers no to the above question, we
* ignore the fact that journal apparently has data;
* accidentally replaying over valid data would be far
* worse than skipping a questionable recovery.
*
* XXX should we abort with a fatal error here? What
* will the ext3 kernel code do if a filesystem with
* !NEEDS_RECOVERY but with a non-zero
* journal->j_superblock->s_start is mounted?
*/
}
e2fsck_journal_release(ctx, journal, reset, 0);
return retval;
}
static errcode_t e2fsck_journal_load(journal_t *journal)
{
e2fsck_t ctx = journal->j_dev->k_ctx;
journal_superblock_t *jsb;
struct buffer_head *jbh = journal->j_sb_buffer;
struct problem_context pctx;
clear_problem_context(&pctx);
ll_rw_block(READ, 1, &jbh);
if (jbh->b_err) {
com_err(ctx->device_name, jbh->b_err,
_("reading journal superblock\n"));
return jbh->b_err;
}
jsb = journal->j_superblock;
/* If we don't even have JFS_MAGIC, we probably have a wrong inode */
if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER))
return e2fsck_journal_fix_bad_inode(ctx, &pctx);
switch (ntohl(jsb->s_header.h_blocktype)) {
case JFS_SUPERBLOCK_V1:
journal->j_format_version = 1;
if (jsb->s_feature_compat ||
jsb->s_feature_incompat ||
jsb->s_feature_ro_compat ||
jsb->s_nr_users)
clear_v2_journal_fields(journal);
break;
case JFS_SUPERBLOCK_V2:
journal->j_format_version = 2;
if (ntohl(jsb->s_nr_users) > 1 &&
uuid_is_null(ctx->fs->super->s_journal_uuid))
clear_v2_journal_fields(journal);
if (ntohl(jsb->s_nr_users) > 1) {
fix_problem(ctx, PR_0_JOURNAL_UNSUPP_MULTIFS, &pctx);
return EXT2_ET_JOURNAL_UNSUPP_VERSION;
}
break;
/*
* These should never appear in a journal super block, so if
* they do, the journal is badly corrupted.
*/
case JFS_DESCRIPTOR_BLOCK:
case JFS_COMMIT_BLOCK:
case JFS_REVOKE_BLOCK:
return EXT2_ET_CORRUPT_SUPERBLOCK;
/* If we don't understand the superblock major type, but there
* is a magic number, then it is likely to be a new format we
* just don't understand, so leave it alone. */
default:
return EXT2_ET_JOURNAL_UNSUPP_VERSION;
}
if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES))
return EXT2_ET_UNSUPP_FEATURE;
if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES))
return EXT2_ET_RO_UNSUPP_FEATURE;
/* We have now checked whether we know enough about the journal
* format to be able to proceed safely, so any other checks that
* fail we should attempt to recover from. */
if (jsb->s_blocksize != htonl(journal->j_blocksize)) {
com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK,
_("%s: no valid journal superblock found\n"),
ctx->device_name);
return EXT2_ET_CORRUPT_SUPERBLOCK;
}
if (ntohl(jsb->s_maxlen) < journal->j_maxlen)
journal->j_maxlen = ntohl(jsb->s_maxlen);
else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) {
com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK,
_("%s: journal too short\n"),
ctx->device_name);
return EXT2_ET_CORRUPT_SUPERBLOCK;
}
journal->j_tail_sequence = ntohl(jsb->s_sequence);
journal->j_transaction_sequence = journal->j_tail_sequence;
journal->j_tail = ntohl(jsb->s_start);
journal->j_first = ntohl(jsb->s_first);
journal->j_last = ntohl(jsb->s_maxlen);
return 0;
}
static errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal)
{
struct ext2_super_block *sb = ctx->fs->super;
struct ext2_super_block jsuper;
struct problem_context pctx;
struct buffer_head *bh;
struct inode *j_inode = NULL;
struct kdev_s *dev_fs = NULL, *dev_journal;
const char *journal_name = 0;
journal_t *journal = NULL;
errcode_t retval = 0;
io_manager io_ptr = 0;
unsigned long start = 0;
blk_t blk;
int ext_journal = 0;
int tried_backup_jnl = 0;
int i;
clear_problem_context(&pctx);
journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal");
if (!journal) {
return EXT2_ET_NO_MEMORY;
}
dev_fs = e2fsck_allocate_memory(ctx, 2*sizeof(struct kdev_s), "kdev");
if (!dev_fs) {
retval = EXT2_ET_NO_MEMORY;
goto errout;
}
dev_journal = dev_fs+1;
dev_fs->k_ctx = dev_journal->k_ctx = ctx;
dev_fs->k_dev = K_DEV_FS;
dev_journal->k_dev = K_DEV_JOURNAL;
journal->j_dev = dev_journal;
journal->j_fs_dev = dev_fs;
journal->j_inode = NULL;
journal->j_blocksize = ctx->fs->blocksize;
if (uuid_is_null(sb->s_journal_uuid)) {
if (!sb->s_journal_inum)
return EXT2_ET_BAD_INODE_NUM;
j_inode = e2fsck_allocate_memory(ctx, sizeof(*j_inode),
"journal inode");
if (!j_inode) {
retval = EXT2_ET_NO_MEMORY;
goto errout;
}
j_inode->i_ctx = ctx;
j_inode->i_ino = sb->s_journal_inum;
if ((retval = ext2fs_read_inode(ctx->fs,
sb->s_journal_inum,
&j_inode->i_ext2))) {
try_backup_journal:
if (sb->s_jnl_backup_type != EXT3_JNL_BACKUP_BLOCKS ||
tried_backup_jnl)
goto errout;
memset(&j_inode->i_ext2, 0, sizeof(struct ext2_inode));
memcpy(&j_inode->i_ext2.i_block[0], sb->s_jnl_blocks,
EXT2_N_BLOCKS*4);
j_inode->i_ext2.i_size = sb->s_jnl_blocks[16];
j_inode->i_ext2.i_links_count = 1;
j_inode->i_ext2.i_mode = LINUX_S_IFREG | 0600;
tried_backup_jnl++;
}
if (!j_inode->i_ext2.i_links_count ||
!LINUX_S_ISREG(j_inode->i_ext2.i_mode)) {
retval = EXT2_ET_NO_JOURNAL;
goto try_backup_journal;
}
if (j_inode->i_ext2.i_size / journal->j_blocksize <
JFS_MIN_JOURNAL_BLOCKS) {
retval = EXT2_ET_JOURNAL_TOO_SMALL;
goto try_backup_journal;
}
for (i=0; i < EXT2_N_BLOCKS; i++) {
blk = j_inode->i_ext2.i_block[i];
if (!blk) {
if (i < EXT2_NDIR_BLOCKS) {
retval = EXT2_ET_JOURNAL_TOO_SMALL;
goto try_backup_journal;
}
continue;
}
if (blk < sb->s_first_data_block ||
blk >= sb->s_blocks_count) {
retval = EXT2_ET_BAD_BLOCK_NUM;
goto try_backup_journal;
}
}
journal->j_maxlen = j_inode->i_ext2.i_size / journal->j_blocksize;
#ifdef USE_INODE_IO
retval = ext2fs_inode_io_intern2(ctx->fs, sb->s_journal_inum,
&j_inode->i_ext2,
&journal_name);
if (retval)
goto errout;
io_ptr = inode_io_manager;
#else
journal->j_inode = j_inode;
ctx->journal_io = ctx->fs->io;
if ((retval = journal_bmap(journal, 0, &start)) != 0)
goto errout;
#endif
} else {
ext_journal = 1;
if (!ctx->journal_name) {
char uuid[37];
uuid_unparse(sb->s_journal_uuid, uuid);
ctx->journal_name = blkid_get_devname(ctx->blkid,
"UUID", uuid);
if (!ctx->journal_name)
ctx->journal_name = blkid_devno_to_devname(sb->s_journal_dev);
}
journal_name = ctx->journal_name;
if (!journal_name) {
fix_problem(ctx, PR_0_CANT_FIND_JOURNAL, &pctx);
return EXT2_ET_LOAD_EXT_JOURNAL;
}
jfs_debug(1, "Using journal file %s\n", journal_name);
io_ptr = unix_io_manager;
}
#if 0
test_io_backing_manager = io_ptr;
io_ptr = test_io_manager;
#endif
#ifndef USE_INODE_IO
if (ext_journal)
#endif
retval = io_ptr->open(journal_name, IO_FLAG_RW,
&ctx->journal_io);
if (retval)
goto errout;
io_channel_set_blksize(ctx->journal_io, ctx->fs->blocksize);
if (ext_journal) {
if (ctx->fs->blocksize == 1024)
start = 1;
bh = getblk(dev_journal, start, ctx->fs->blocksize);
if (!bh) {
retval = EXT2_ET_NO_MEMORY;
goto errout;
}
ll_rw_block(READ, 1, &bh);
if ((retval = bh->b_err) != 0) {
brelse(bh);
goto errout;
}
memcpy(&jsuper, start ? bh->b_data : bh->b_data + 1024,
sizeof(jsuper));
brelse(bh);
#ifdef EXT2FS_ENABLE_SWAPFS
if (jsuper.s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC))
ext2fs_swap_super(&jsuper);
#endif
if (jsuper.s_magic != EXT2_SUPER_MAGIC ||
!(jsuper.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
fix_problem(ctx, PR_0_EXT_JOURNAL_BAD_SUPER, &pctx);
retval = EXT2_ET_LOAD_EXT_JOURNAL;
goto errout;
}
/* Make sure the journal UUID is correct */
if (memcmp(jsuper.s_uuid, ctx->fs->super->s_journal_uuid,
sizeof(jsuper.s_uuid))) {
fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx);
retval = EXT2_ET_LOAD_EXT_JOURNAL;
goto errout;
}
journal->j_maxlen = jsuper.s_blocks_count;
start++;
}
if (!(bh = getblk(dev_journal, start, journal->j_blocksize))) {
retval = EXT2_ET_NO_MEMORY;
goto errout;
}
journal->j_sb_buffer = bh;
journal->j_superblock = (journal_superblock_t *)bh->b_data;
#ifdef USE_INODE_IO
if (j_inode)
ext2fs_free_mem(&j_inode);
#endif
*ret_journal = journal;
return 0;
errout:
if (dev_fs)
ext2fs_free_mem(&dev_fs);
if (j_inode)
ext2fs_free_mem(&j_inode);
if (journal)
ext2fs_free_mem(&journal);
return retval;
}
void e2fsck_rehash_directories(e2fsck_t ctx)
{
struct problem_context pctx;
#ifdef RESOURCE_TRACK
struct resource_track rtrack;
#endif
struct dir_info *dir;
ext2_u32_iterate iter;
struct dir_info_iter * dirinfo_iter = 0;
ext2_ino_t ino;
errcode_t retval;
int cur, max, all_dirs, first = 1;
init_resource_track(&rtrack, ctx->fs->io);
all_dirs = ctx->options & E2F_OPT_COMPRESS_DIRS;
if (!ctx->dirs_to_hash && !all_dirs)
return;
(void) e2fsck_get_lost_and_found(ctx, 0);
clear_problem_context(&pctx);
cur = 0;
if (all_dirs) {
dirinfo_iter = e2fsck_dir_info_iter_begin(ctx);
max = e2fsck_get_num_dirinfo(ctx);
} else {
retval = ext2fs_u32_list_iterate_begin(ctx->dirs_to_hash,
&iter);
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3A_OPTIMIZE_ITER, &pctx);
return;
}
max = ext2fs_u32_list_count(ctx->dirs_to_hash);
}
while (1) {
if (all_dirs) {
if ((dir = e2fsck_dir_info_iter(ctx,
dirinfo_iter)) == 0)
break;
ino = dir->ino;
} else {
if (!ext2fs_u32_list_iterate(iter, &ino))
break;
}
pctx.dir = ino;
if (first) {
fix_problem(ctx, PR_3A_PASS_HEADER, &pctx);
first = 0;
}
#if 0
fix_problem(ctx, PR_3A_OPTIMIZE_DIR, &pctx);
#endif
pctx.errcode = e2fsck_rehash_dir(ctx, ino, &pctx);
if (pctx.errcode) {
end_problem_latch(ctx, PR_LATCH_OPTIMIZE_DIR);
fix_problem(ctx, PR_3A_OPTIMIZE_DIR_ERR, &pctx);
}
if (ctx->progress && !ctx->progress_fd)
e2fsck_simple_progress(ctx, "Rebuilding directory",
100.0 * (float) (++cur) / (float) max, ino);
}
end_problem_latch(ctx, PR_LATCH_OPTIMIZE_DIR);
if (all_dirs)
e2fsck_dir_info_iter_end(ctx, dirinfo_iter);
else
ext2fs_u32_list_iterate_end(iter);
if (ctx->dirs_to_hash)
ext2fs_u32_list_free(ctx->dirs_to_hash);
ctx->dirs_to_hash = 0;
print_resource_track(ctx, "Pass 3A", &rtrack, ctx->fs->io);
}
static int duplicate_search_and_fix(e2fsck_t ctx, ext2_filsys fs,
ext2_ino_t ino,
struct fill_dir_struct *fd)
{
struct problem_context pctx;
struct hash_entry *ent, *prev;
int i, j;
int fixed = 0;
char new_name[256];
unsigned int new_len;
int hash_alg;
clear_problem_context(&pctx);
pctx.ino = ino;
hash_alg = fs->super->s_def_hash_version;
if ((hash_alg <= EXT2_HASH_TEA) &&
(fs->super->s_flags & EXT2_FLAGS_UNSIGNED_HASH))
hash_alg += 3;
for (i=1; i < fd->num_array; i++) {
ent = fd->harray + i;
prev = ent - 1;
if (!ent->dir->inode ||
(ext2fs_dirent_name_len(ent->dir) !=
ext2fs_dirent_name_len(prev->dir)) ||
strncmp(ent->dir->name, prev->dir->name,
ext2fs_dirent_name_len(ent->dir)))
continue;
pctx.dirent = ent->dir;
if ((ent->dir->inode == prev->dir->inode) &&
fix_problem(ctx, PR_2_DUPLICATE_DIRENT, &pctx)) {
e2fsck_adjust_inode_count(ctx, ent->dir->inode, -1);
ent->dir->inode = 0;
fixed++;
continue;
}
new_len = ext2fs_dirent_name_len(ent->dir);
memcpy(new_name, ent->dir->name, new_len);
mutate_name(new_name, &new_len);
for (j=0; j < fd->num_array; j++) {
if ((i==j) ||
(new_len !=
ext2fs_dirent_name_len(fd->harray[j].dir)) ||
strncmp(new_name, fd->harray[j].dir->name, new_len))
continue;
mutate_name(new_name, &new_len);
j = -1;
}
new_name[new_len] = 0;
pctx.str = new_name;
if (fix_problem(ctx, PR_2_NON_UNIQUE_FILE, &pctx)) {
memcpy(ent->dir->name, new_name, new_len);
ext2fs_dirent_set_name_len(ent->dir, new_len);
ext2fs_dirhash(hash_alg, new_name, new_len,
fs->super->s_hash_seed,
&ent->hash, &ent->minor_hash);
fixed++;
}
}
return fixed;
}
int main (int argc, char *argv[])
{
errcode_t retval = 0, retval2 = 0, orig_retval = 0;
int exit_value = FSCK_OK;
ext2_filsys fs = 0;
io_manager io_ptr;
struct ext2_super_block *sb;
const char *lib_ver_date;
int my_ver, lib_ver;
e2fsck_t ctx;
blk_t orig_superblock;
struct problem_context pctx;
int flags, run_result;
int journal_size;
int sysval, sys_page_size = 4096;
__u32 features[3];
char *cp;
klog_init();
E2F_DBG_INFO("e2fsck start...");
#ifdef E2FSCK_PIPE_DEBUG_
memset(pipe_msg_temp, 0, MSG_LEN);
memcpy(pipe_msg_temp, argv[2], strlen(argv[2]));
pipe_open();
pipe_write(C_IN_START);
#endif
clear_problem_context(&pctx);
#ifdef MTRACE
mtrace();
#endif
#ifdef MCHECK
mcheck(0);
#endif
#ifdef ENABLE_NLS
setlocale(LC_MESSAGES, "");
setlocale(LC_CTYPE, "");
bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
textdomain(NLS_CAT_NAME);
#endif
my_ver = ext2fs_parse_version_string(my_ver_string);
lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
if (my_ver > lib_ver) {
fprintf( stderr, _("Error: ext2fs library version "
"out of date!\n"));
show_version_only++;
}
retval = PRS(argc, argv, &ctx);
if (retval) {
com_err("e2fsck", retval,
_("while trying to initialize program"));
exit(FSCK_ERROR);
}
reserve_stdio_fds();
init_resource_track(&ctx->global_rtrack, NULL);
if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
fprintf(stderr, "e2fsck %s (%s)\n", my_ver_string,
my_ver_date);
if (show_version_only) {
fprintf(stderr, _("\tUsing %s, %s\n"),
error_message(EXT2_ET_BASE), lib_ver_date);
exit(FSCK_OK);
}
check_mount(ctx);
if (!(ctx->options & E2F_OPT_PREEN) &&
!(ctx->options & E2F_OPT_NO) &&
!(ctx->options & E2F_OPT_YES)) {
if (!ctx->interactive)
fatal_error(ctx,
_("need terminal for interactive repairs"));
}
ctx->superblock = ctx->use_superblock;
restart:
#ifdef CONFIG_TESTIO_DEBUG
if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
io_ptr = test_io_manager;
test_io_backing_manager = unix_io_manager;
} else
#endif
io_ptr = unix_io_manager;
flags = EXT2_FLAG_NOFREE_ON_ERROR;
if ((ctx->options & E2F_OPT_READONLY) == 0)
flags |= EXT2_FLAG_RW;
if ((ctx->mount_flags & EXT2_MF_MOUNTED) == 0)
flags |= EXT2_FLAG_EXCLUSIVE;
retval = try_open_fs(ctx, flags, io_ptr, &fs);
if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
!(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
((retval == EXT2_ET_BAD_MAGIC) ||
(retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
if (retval2 == ENOMEM) {
retval = retval2;
goto failure;
}
if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
ext2fs_free(fs);
fs = NULL;
}
if (!fs || (fs->group_desc_count > 1)) {
printf(_("%s: %s trying backup blocks...\n"),
ctx->program_name,
retval ? _("Superblock invalid,") :
_("Group descriptors look bad..."));
orig_superblock = ctx->superblock;
get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
if (fs)
ext2fs_close(fs);
orig_retval = retval;
retval = try_open_fs(ctx, flags, io_ptr, &fs);
if ((orig_retval == 0) && retval != 0) {
if (fs)
ext2fs_close(fs);
com_err(ctx->program_name, retval,
"when using the backup blocks");
printf(_("%s: going back to original "
"superblock\n"), ctx->program_name);
ctx->superblock = orig_superblock;
retval = try_open_fs(ctx, flags, io_ptr, &fs);
}
}
}
if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
(retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
fs && fs->super) {
sb = fs->super;
features[0] = (sb->s_feature_compat &
~EXT2_LIB_FEATURE_COMPAT_SUPP);
features[1] = (sb->s_feature_incompat &
~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
features[2] = (sb->s_feature_ro_compat &
~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
if (features[0] || features[1] || features[2])
goto print_unsupp_features;
}
failure:
if (retval) {
if (orig_retval)
retval = orig_retval;
com_err(ctx->program_name, retval, _("while trying to open %s"),
ctx->filesystem_name);
if (retval == EXT2_ET_REV_TOO_HIGH) {
printf(_("The filesystem revision is apparently "
"too high for this version of e2fsck.\n"
"(Or the filesystem superblock "
"is corrupt)\n\n"));
fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
} else if (retval == EXT2_ET_SHORT_READ)
printf(_("Could this be a zero-length partition?\n"));
else if ((retval == EPERM) || (retval == EACCES))
printf(_("You must have %s access to the "
"filesystem or be root\n"),
(ctx->options & E2F_OPT_READONLY) ?
"r/o" : "r/w");
else if (retval == ENXIO)
printf(_("Possibly non-existent or swap device?\n"));
else if (retval == EBUSY)
printf(_("Filesystem mounted or opened exclusively "
"by another program?\n"));
else if (retval == ENOENT)
printf(_("Possibly non-existent device?\n"));
#ifdef EROFS
else if (retval == EROFS)
printf(_("Disk write-protected; use the -n option "
"to do a read-only\n"
"check of the device.\n"));
#endif
else
fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
fatal_error(ctx, 0);
}
/*
* We only update the master superblock because (a) paranoia;
* we don't want to corrupt the backup superblocks, and (b) we
* don't need to update the mount count and last checked
* fields in the backup superblock (the kernel doesn't update
* the backup superblocks anyway). With newer versions of the
* library this flag is set by ext2fs_open2(), but we set this
* here just to be sure. (No, we don't support e2fsck running
* with some other libext2fs than the one that it was shipped
* with, but just in case....)
*/
fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
__u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
int need_restart = 0;
pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
blocksize,
&ctx->num_blocks);
/*
* The floppy driver refuses to allow anyone else to
* open the device if has been opened with O_EXCL;
* this is unlike other block device drivers in Linux.
* To handle this, we close the filesystem and then
* reopen the filesystem after we get the device size.
*/
if (pctx.errcode == EBUSY) {
ext2fs_close(fs);
need_restart++;
pctx.errcode =
ext2fs_get_device_size2(ctx->filesystem_name,
blocksize,
&ctx->num_blocks);
}
if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
ctx->num_blocks = 0;
else if (pctx.errcode) {
fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
fatal_error(ctx, 0);
}
ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
if (need_restart)
goto restart;
}
ctx->fs = fs;
fs->priv_data = ctx;
fs->now = ctx->now;
sb = fs->super;
if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
_("while trying to open %s"),
ctx->filesystem_name);
get_newer:
fatal_error(ctx, _("Get a newer version of e2fsck!"));
}
/*
* Set the device name, which is used whenever we print error
* or informational messages to the user.
*/
if (ctx->device_name == 0 &&
(sb->s_volume_name[0] != 0)) {
ctx->device_name = string_copy(ctx, sb->s_volume_name,
sizeof(sb->s_volume_name));
}
if (ctx->device_name == 0)
ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
for (cp = ctx->device_name; *cp; cp++)
if (isspace(*cp) || *cp == ':')
*cp = '_';
ehandler_init(fs->io);
if ((ctx->mount_flags & EXT2_MF_MOUNTED) &&
!(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER))
goto skip_journal;
/*
* Make sure the ext3 superblock fields are consistent.
*/
retval = e2fsck_check_ext3_journal(ctx);
if (retval) {
com_err(ctx->program_name, retval,
_("while checking ext3 journal for %s"),
ctx->device_name);
fatal_error(ctx, 0);
}
/*
* Check to see if we need to do ext3-style recovery. If so,
* do it, and then restart the fsck.
*/
if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) {
if (ctx->options & E2F_OPT_READONLY) {
printf(_("Warning: skipping journal recovery "
"because doing a read-only filesystem "
"check.\n"));
io_channel_flush(ctx->fs->io);
} else {
if (ctx->flags & E2F_FLAG_RESTARTED) {
/*
* Whoops, we attempted to run the
* journal twice. This should never
* happen, unless the hardware or
* device driver is being bogus.
*/
com_err(ctx->program_name, 0,
_("unable to set superblock flags on %s\n"), ctx->device_name);
fatal_error(ctx, 0);
}
retval = e2fsck_run_ext3_journal(ctx);
if (retval) {
com_err(ctx->program_name, retval,
_("while recovering ext3 journal of %s"),
ctx->device_name);
fatal_error(ctx, 0);
}
ext2fs_close(ctx->fs);
ctx->fs = 0;
ctx->flags |= E2F_FLAG_RESTARTED;
goto restart;
}
}
skip_journal:
/*
* Check for compatibility with the feature sets. We need to
* be more stringent than ext2fs_open().
*/
features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
features[2] = (sb->s_feature_ro_compat &
~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
print_unsupp_features:
if (features[0] || features[1] || features[2]) {
int i, j;
__u32 *mask = features, m;
fprintf(stderr, _("%s has unsupported feature(s):"),
ctx->filesystem_name);
for (i=0; i <3; i++,mask++) {
for (j=0,m=1; j < 32; j++, m<<=1) {
if (*mask & m)
fprintf(stderr, " %s",
e2p_feature2string(i, m));
}
}
putc('\n', stderr);
goto get_newer;
}
#ifdef ENABLE_COMPRESSION
if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
com_err(ctx->program_name, 0,
_("Warning: compression support is experimental.\n"));
#endif
#ifndef ENABLE_HTREE
if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
com_err(ctx->program_name, 0,
_("E2fsck not compiled with HTREE support,\n\t"
"but filesystem %s has HTREE directories.\n"),
ctx->device_name);
goto get_newer;
}
#endif
/*
* If the user specified a specific superblock, presumably the
* master superblock has been trashed. So we mark the
* superblock as dirty, so it can be written out.
*/
if (ctx->superblock &&
!(ctx->options & E2F_OPT_READONLY))
ext2fs_mark_super_dirty(fs);
/*
* Calculate the number of filesystem blocks per pagesize. If
* fs->blocksize > page_size, set the number of blocks per
* pagesize to 1 to avoid division by zero errors.
*/
#ifdef _SC_PAGESIZE
sysval = sysconf(_SC_PAGESIZE);
if (sysval > 0)
sys_page_size = sysval;
#endif /* _SC_PAGESIZE */
ctx->blocks_per_page = sys_page_size / fs->blocksize;
if (ctx->blocks_per_page == 0)
ctx->blocks_per_page = 1;
if (ctx->superblock)
set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
ext2fs_mark_valid(fs);
check_super_block(ctx);
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
fatal_error(ctx, 0);
check_if_skip(ctx);
check_resize_inode(ctx);
if (bad_blocks_file)
read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
else if (cflag)
read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
fatal_error(ctx, 0);
/*
* Mark the system as valid, 'til proven otherwise
*/
ext2fs_mark_valid(fs);
retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
if (retval) {
com_err(ctx->program_name, retval,
_("while reading bad blocks inode"));
preenhalt(ctx);
printf(_("This doesn't bode well,"
" but we'll try to go on...\n"));
}
/*
* Save the journal size in megabytes.
* Try and use the journal size from the backup else let e2fsck
* find the default journal size.
*/
if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
journal_size = sb->s_jnl_blocks[16] >> 20;
else
static int check_dir_block(ext2_filsys fs,
struct ext2_db_entry2 *db,
void *priv_data)
{
struct dx_dir_info *dx_dir;
#ifdef ENABLE_HTREE
struct dx_dirblock_info *dx_db = 0;
#endif /* ENABLE_HTREE */
struct ext2_dir_entry *dirent, *prev;
ext2_dirhash_t hash;
unsigned int offset = 0;
int dir_modified = 0;
int dot_state;
unsigned int rec_len;
blk64_t block_nr = db->blk;
ext2_ino_t ino = db->ino;
ext2_ino_t subdir_parent;
__u16 links;
struct check_dir_struct *cd;
char *buf;
e2fsck_t ctx;
int problem;
struct ext2_dx_root_info *root;
struct ext2_dx_countlimit *limit;
static dict_t de_dict;
struct problem_context pctx;
int dups_found = 0;
int ret;
int dx_csum_size = 0, de_csum_size = 0;
int failed_csum = 0;
int is_leaf = 1;
cd = (struct check_dir_struct *) priv_data;
buf = cd->buf;
ctx = cd->ctx;
if (ctx->flags & E2F_FLAG_SIGNAL_MASK || ctx->flags & E2F_FLAG_RESTART)
return DIRENT_ABORT;
if (ctx->progress && (ctx->progress)(ctx, 2, cd->count++, cd->max))
return DIRENT_ABORT;
if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
dx_csum_size = sizeof(struct ext2_dx_tail);
de_csum_size = sizeof(struct ext2_dir_entry_tail);
}
/*
* Make sure the inode is still in use (could have been
* deleted in the duplicate/bad blocks pass.
*/
if (!(ext2fs_test_inode_bitmap2(ctx->inode_used_map, ino)))
return 0;
cd->pctx.ino = ino;
cd->pctx.blk = block_nr;
cd->pctx.blkcount = db->blockcnt;
cd->pctx.ino2 = 0;
cd->pctx.dirent = 0;
cd->pctx.num = 0;
if (db->blk == 0) {
if (allocate_dir_block(ctx, db, buf, &cd->pctx))
return 0;
block_nr = db->blk;
}
if (db->blockcnt)
dot_state = 2;
else
dot_state = 0;
if (ctx->dirs_to_hash &&
ext2fs_u32_list_test(ctx->dirs_to_hash, ino))
dups_found++;
#if 0
printf("In process_dir_block block %lu, #%d, inode %lu\n", block_nr,
db->blockcnt, ino);
#endif
ehandler_operation(_("reading directory block"));
cd->pctx.errcode = ext2fs_read_dir_block4(fs, block_nr, buf, 0, ino);
ehandler_operation(0);
if (cd->pctx.errcode == EXT2_ET_DIR_CORRUPTED)
cd->pctx.errcode = 0; /* We'll handle this ourselves */
else if (cd->pctx.errcode == EXT2_ET_DIR_CSUM_INVALID) {
cd->pctx.errcode = 0; /* We'll handle this ourselves */
failed_csum = 1;
}
if (cd->pctx.errcode) {
char *buf2;
if (!fix_problem(ctx, PR_2_READ_DIRBLOCK, &cd->pctx)) {
ctx->flags |= E2F_FLAG_ABORT;
return DIRENT_ABORT;
}
ext2fs_new_dir_block(fs, db->blockcnt == 0 ? ino : 0,
EXT2_ROOT_INO, &buf2);
memcpy(buf, buf2, fs->blocksize);
ext2fs_free_mem(&buf2);
}
#ifdef ENABLE_HTREE
dx_dir = e2fsck_get_dx_dir_info(ctx, ino);
if (dx_dir && dx_dir->numblocks) {
if (db->blockcnt >= dx_dir->numblocks) {
if (fix_problem(ctx, PR_2_UNEXPECTED_HTREE_BLOCK,
&pctx)) {
clear_htree(ctx, ino);
dx_dir->numblocks = 0;
dx_db = 0;
goto out_htree;
}
fatal_error(ctx, _("Can not continue."));
}
dx_db = &dx_dir->dx_block[db->blockcnt];
dx_db->type = DX_DIRBLOCK_LEAF;
dx_db->phys = block_nr;
dx_db->min_hash = ~0;
dx_db->max_hash = 0;
dirent = (struct ext2_dir_entry *) buf;
(void) ext2fs_get_rec_len(fs, dirent, &rec_len);
limit = (struct ext2_dx_countlimit *) (buf+8);
if (db->blockcnt == 0) {
root = (struct ext2_dx_root_info *) (buf + 24);
dx_db->type = DX_DIRBLOCK_ROOT;
dx_db->flags |= DX_FLAG_FIRST | DX_FLAG_LAST;
if ((root->reserved_zero ||
root->info_length < 8 ||
root->indirect_levels > 1) &&
fix_problem(ctx, PR_2_HTREE_BAD_ROOT, &cd->pctx)) {
clear_htree(ctx, ino);
dx_dir->numblocks = 0;
dx_db = 0;
}
dx_dir->hashversion = root->hash_version;
if ((dx_dir->hashversion <= EXT2_HASH_TEA) &&
(fs->super->s_flags & EXT2_FLAGS_UNSIGNED_HASH))
dx_dir->hashversion += 3;
dx_dir->depth = root->indirect_levels + 1;
} else if ((dirent->inode == 0) &&
(rec_len == fs->blocksize) &&
(dirent->name_len == 0) &&
(ext2fs_le16_to_cpu(limit->limit) ==
((fs->blocksize - (8 + dx_csum_size)) /
sizeof(struct ext2_dx_entry))))
dx_db->type = DX_DIRBLOCK_NODE;
is_leaf = 0;
}
out_htree:
#endif /* ENABLE_HTREE */
/* Verify checksum. */
if (is_leaf && de_csum_size) {
/* No space for csum? Rebuild dirs in pass 3A. */
if (!ext2fs_dirent_has_tail(fs, (struct ext2_dir_entry *)buf)) {
de_csum_size = 0;
if (e2fsck_dir_will_be_rehashed(ctx, ino))
goto skip_checksum;
if (!fix_problem(cd->ctx, PR_2_LEAF_NODE_MISSING_CSUM,
&cd->pctx))
goto skip_checksum;
e2fsck_rehash_dir_later(ctx, ino);
goto skip_checksum;
}
if (failed_csum) {
char *buf2;
if (!fix_problem(cd->ctx, PR_2_LEAF_NODE_CSUM_INVALID,
&cd->pctx))
goto skip_checksum;
ext2fs_new_dir_block(fs,
db->blockcnt == 0 ? ino : 0,
EXT2_ROOT_INO, &buf2);
memcpy(buf, buf2, fs->blocksize);
ext2fs_free_mem(&buf2);
dir_modified++;
failed_csum = 0;
}
}
/* htree nodes don't use fake dirents to store checksums */
if (!is_leaf)
de_csum_size = 0;
skip_checksum:
dict_init(&de_dict, DICTCOUNT_T_MAX, dict_de_cmp);
prev = 0;
do {
int group;
ext2_ino_t first_unused_inode;
problem = 0;
dirent = (struct ext2_dir_entry *) (buf + offset);
(void) ext2fs_get_rec_len(fs, dirent, &rec_len);
cd->pctx.dirent = dirent;
cd->pctx.num = offset;
if (((offset + rec_len) > fs->blocksize) ||
(rec_len < 12) ||
((rec_len % 4) != 0) ||
(((dirent->name_len & (unsigned) 0xFF)+8) > rec_len)) {
if (fix_problem(ctx, PR_2_DIR_CORRUPTED, &cd->pctx)) {
salvage_directory(fs, dirent, prev, &offset);
dir_modified++;
continue;
} else
goto abort_free_dict;
}
if (dot_state == 0) {
if (check_dot(ctx, dirent, ino, &cd->pctx))
dir_modified++;
} else if (dot_state == 1) {
ret = check_dotdot(ctx, dirent, ino, &cd->pctx);
if (ret < 0)
goto abort_free_dict;
if (ret)
dir_modified++;
} else if (dirent->inode == ino) {
problem = PR_2_LINK_DOT;
if (fix_problem(ctx, PR_2_LINK_DOT, &cd->pctx)) {
dirent->inode = 0;
dir_modified++;
goto next;
}
}
if (!dirent->inode)
goto next;
/*
* Make sure the inode listed is a legal one.
*/
if (((dirent->inode != EXT2_ROOT_INO) &&
(dirent->inode < EXT2_FIRST_INODE(fs->super))) ||
(dirent->inode > fs->super->s_inodes_count)) {
problem = PR_2_BAD_INO;
} else if (ctx->inode_bb_map &&
(ext2fs_test_inode_bitmap2(ctx->inode_bb_map,
dirent->inode))) {
/*
* If the inode is in a bad block, offer to
* clear it.
*/
problem = PR_2_BB_INODE;
} else if ((dot_state > 1) &&
((dirent->name_len & 0xFF) == 1) &&
(dirent->name[0] == '.')) {
/*
* If there's a '.' entry in anything other
* than the first directory entry, it's a
* duplicate entry that should be removed.
*/
problem = PR_2_DUP_DOT;
} else if ((dot_state > 1) &&
((dirent->name_len & 0xFF) == 2) &&
(dirent->name[0] == '.') &&
(dirent->name[1] == '.')) {
/*
* If there's a '..' entry in anything other
* than the second directory entry, it's a
* duplicate entry that should be removed.
*/
problem = PR_2_DUP_DOT_DOT;
} else if ((dot_state > 1) &&
(dirent->inode == EXT2_ROOT_INO)) {
/*
* Don't allow links to the root directory.
* We check this specially to make sure we
* catch this error case even if the root
* directory hasn't been created yet.
*/
problem = PR_2_LINK_ROOT;
} else if ((dot_state > 1) &&
(dirent->name_len & 0xFF) == 0) {
/*
* Don't allow zero-length directory names.
*/
problem = PR_2_NULL_NAME;
}
if (problem) {
if (fix_problem(ctx, problem, &cd->pctx)) {
dirent->inode = 0;
dir_modified++;
goto next;
} else {
ext2fs_unmark_valid(fs);
if (problem == PR_2_BAD_INO)
goto next;
}
}
/*
* If the inode was marked as having bad fields in
* pass1, process it and offer to fix/clear it.
* (We wait until now so that we can display the
* pathname to the user.)
*/
if (ctx->inode_bad_map &&
ext2fs_test_inode_bitmap2(ctx->inode_bad_map,
dirent->inode)) {
if (e2fsck_process_bad_inode(ctx, ino,
dirent->inode,
buf + fs->blocksize)) {
dirent->inode = 0;
dir_modified++;
goto next;
}
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
return DIRENT_ABORT;
}
group = ext2fs_group_of_ino(fs, dirent->inode);
first_unused_inode = group * fs->super->s_inodes_per_group +
1 + fs->super->s_inodes_per_group -
ext2fs_bg_itable_unused(fs, group);
cd->pctx.group = group;
/*
* Check if the inode was missed out because
* _INODE_UNINIT flag was set or bg_itable_unused was
* incorrect. If so, clear the _INODE_UNINIT flag and
* restart e2fsck. In the future it would be nice if
* we could call a function in pass1.c that checks the
* newly visible inodes.
*/
if (ext2fs_bg_flags_test(fs, group, EXT2_BG_INODE_UNINIT)) {
pctx.num = dirent->inode;
if (fix_problem(ctx, PR_2_INOREF_BG_INO_UNINIT,
&cd->pctx)){
ext2fs_bg_flags_clear(fs, group,
EXT2_BG_INODE_UNINIT);
ext2fs_mark_super_dirty(fs);
ctx->flags |= E2F_FLAG_RESTART_LATER;
} else {
ext2fs_unmark_valid(fs);
if (problem == PR_2_BAD_INO)
goto next;
}
} else if (dirent->inode >= first_unused_inode) {
pctx.num = dirent->inode;
if (fix_problem(ctx, PR_2_INOREF_IN_UNUSED, &cd->pctx)){
ext2fs_bg_itable_unused_set(fs, group, 0);
ext2fs_mark_super_dirty(fs);
ctx->flags |= E2F_FLAG_RESTART_LATER;
} else {
ext2fs_unmark_valid(fs);
if (problem == PR_2_BAD_INO)
goto next;
}
}
/*
* Offer to clear unused inodes; if we are going to be
* restarting the scan due to bg_itable_unused being
* wrong, then don't clear any inodes to avoid zapping
* inodes that were skipped during pass1 due to an
* incorrect bg_itable_unused; we'll get any real
* problems after we restart.
*/
if (!(ctx->flags & E2F_FLAG_RESTART_LATER) &&
!(ext2fs_test_inode_bitmap2(ctx->inode_used_map,
dirent->inode)))
problem = PR_2_UNUSED_INODE;
if (problem) {
if (fix_problem(ctx, problem, &cd->pctx)) {
dirent->inode = 0;
dir_modified++;
goto next;
} else {
ext2fs_unmark_valid(fs);
if (problem == PR_2_BAD_INO)
goto next;
}
}
if (check_name(ctx, dirent, ino, &cd->pctx))
dir_modified++;
if (check_filetype(ctx, dirent, ino, &cd->pctx))
dir_modified++;
#ifdef ENABLE_HTREE
if (dx_db) {
ext2fs_dirhash(dx_dir->hashversion, dirent->name,
(dirent->name_len & 0xFF),
fs->super->s_hash_seed, &hash, 0);
if (hash < dx_db->min_hash)
dx_db->min_hash = hash;
if (hash > dx_db->max_hash)
dx_db->max_hash = hash;
}
#endif
/*
* If this is a directory, then mark its parent in its
* dir_info structure. If the parent field is already
* filled in, then this directory has more than one
* hard link. We assume the first link is correct,
* and ask the user if he/she wants to clear this one.
*/
if ((dot_state > 1) &&
(ext2fs_test_inode_bitmap2(ctx->inode_dir_map,
dirent->inode))) {
if (e2fsck_dir_info_get_parent(ctx, dirent->inode,
&subdir_parent)) {
cd->pctx.ino = dirent->inode;
fix_problem(ctx, PR_2_NO_DIRINFO, &cd->pctx);
goto abort_free_dict;
}
if (subdir_parent) {
cd->pctx.ino2 = subdir_parent;
if (fix_problem(ctx, PR_2_LINK_DIR,
&cd->pctx)) {
dirent->inode = 0;
dir_modified++;
goto next;
}
cd->pctx.ino2 = 0;
} else {
(void) e2fsck_dir_info_set_parent(ctx,
dirent->inode, ino);
}
}
if (dups_found) {
;
} else if (dict_lookup(&de_dict, dirent)) {
clear_problem_context(&pctx);
pctx.ino = ino;
pctx.dirent = dirent;
fix_problem(ctx, PR_2_REPORT_DUP_DIRENT, &pctx);
e2fsck_rehash_dir_later(ctx, ino);
dups_found++;
} else
dict_alloc_insert(&de_dict, dirent, dirent);
ext2fs_icount_increment(ctx->inode_count, dirent->inode,
&links);
if (links > 1)
ctx->fs_links_count++;
ctx->fs_total_count++;
next:
prev = dirent;
if (dir_modified)
(void) ext2fs_get_rec_len(fs, dirent, &rec_len);
offset += rec_len;
dot_state++;
} while (offset < fs->blocksize - de_csum_size);
#if 0
printf("\n");
#endif
#ifdef ENABLE_HTREE
if (dx_db) {
#ifdef DX_DEBUG
printf("db_block %d, type %d, min_hash 0x%0x, max_hash 0x%0x\n",
db->blockcnt, dx_db->type,
dx_db->min_hash, dx_db->max_hash);
#endif
cd->pctx.dir = cd->pctx.ino;
if ((dx_db->type == DX_DIRBLOCK_ROOT) ||
(dx_db->type == DX_DIRBLOCK_NODE))
parse_int_node(fs, db, cd, dx_dir, buf, failed_csum);
}
#endif /* ENABLE_HTREE */
if (offset != fs->blocksize - de_csum_size) {
cd->pctx.num = rec_len - (fs->blocksize - de_csum_size) +
offset;
if (fix_problem(ctx, PR_2_FINAL_RECLEN, &cd->pctx)) {
dirent->rec_len = cd->pctx.num;
dir_modified++;
}
}
if (dir_modified) {
/* leaf block with no tail? Rehash dirs later. */
if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) &&
is_leaf &&
!ext2fs_dirent_has_tail(fs, (struct ext2_dir_entry *)buf))
e2fsck_rehash_dir_later(ctx, ino);
write_and_fix:
if (e2fsck_dir_will_be_rehashed(ctx, ino))
ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
cd->pctx.errcode = ext2fs_write_dir_block4(fs, block_nr, buf,
0, ino);
if (e2fsck_dir_will_be_rehashed(ctx, ino))
ctx->fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
if (cd->pctx.errcode) {
if (!fix_problem(ctx, PR_2_WRITE_DIRBLOCK,
&cd->pctx))
goto abort_free_dict;
}
ext2fs_mark_changed(fs);
} else if (is_leaf && failed_csum && !dir_modified) {
/*
* If a leaf node that fails csum makes it this far without
* alteration, ask the user if the checksum should be fixed.
*/
if (fix_problem(ctx, PR_2_LEAF_NODE_ONLY_CSUM_INVALID,
&cd->pctx))
goto write_and_fix;
}
dict_free_nodes(&de_dict);
return 0;
abort_free_dict:
ctx->flags |= E2F_FLAG_ABORT;
dict_free_nodes(&de_dict);
return DIRENT_ABORT;
}
void e2fsck_pass3(e2fsck_t ctx)
{
ext2_filsys fs = ctx->fs;
struct dir_info_iter *iter;
#ifdef RESOURCE_TRACK
struct resource_track rtrack;
#endif
struct problem_context pctx;
struct dir_info *dir;
unsigned long maxdirs, count;
init_resource_track(&rtrack, ctx->fs->io);
clear_problem_context(&pctx);
#ifdef MTRACE
mtrace_print("Pass 3");
#endif
if (!(ctx->options & E2F_OPT_PREEN))
fix_problem(ctx, PR_3_PASS_HEADER, &pctx);
/*
* Allocate some bitmaps to do loop detection.
*/
pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("inode done bitmap"),
EXT2FS_BMAP64_AUTODIR,
"inode_done_map", &inode_done_map);
if (pctx.errcode) {
pctx.num = 2;
fix_problem(ctx, PR_3_ALLOCATE_IBITMAP_ERROR, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
goto abort_exit;
}
print_resource_track(ctx, _("Peak memory"), &ctx->global_rtrack, NULL);
check_root(ctx);
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
goto abort_exit;
ext2fs_mark_inode_bitmap2(inode_done_map, EXT2_ROOT_INO);
maxdirs = e2fsck_get_num_dirinfo(ctx);
count = 1;
if (ctx->progress)
if ((ctx->progress)(ctx, 3, 0, maxdirs))
goto abort_exit;
iter = e2fsck_dir_info_iter_begin(ctx);
while ((dir = e2fsck_dir_info_iter(ctx, iter)) != 0) {
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
goto abort_exit;
if (ctx->progress && (ctx->progress)(ctx, 3, count++, maxdirs))
goto abort_exit;
if (ext2fs_test_inode_bitmap2(ctx->inode_dir_map, dir->ino))
if (check_directory(ctx, dir->ino, &pctx))
goto abort_exit;
}
e2fsck_dir_info_iter_end(ctx, iter);
/*
* Force the creation of /lost+found if not present
*/
if ((ctx->flags & E2F_OPT_READONLY) == 0)
e2fsck_get_lost_and_found(ctx, 1);
/*
* If there are any directories that need to be indexed or
* optimized, do it here.
*/
e2fsck_rehash_directories(ctx);
abort_exit:
e2fsck_free_dir_info(ctx);
if (inode_loop_detect) {
ext2fs_free_inode_bitmap(inode_loop_detect);
inode_loop_detect = 0;
}
if (inode_done_map) {
ext2fs_free_inode_bitmap(inode_done_map);
inode_done_map = 0;
}
print_resource_track(ctx, _("Pass 3"), &rtrack, ctx->fs->io);
}
void e2fsck_pass2(e2fsck_t ctx)
{
struct ext2_super_block *sb = ctx->fs->super;
struct problem_context pctx;
ext2_filsys fs = ctx->fs;
char *buf;
#ifdef RESOURCE_TRACK
struct resource_track rtrack;
#endif
struct check_dir_struct cd;
struct dx_dir_info *dx_dir;
struct dx_dirblock_info *dx_db, *dx_parent;
unsigned int save_type;
int b;
int i, depth;
problem_t code;
int bad_dir;
init_resource_track(&rtrack, ctx->fs->io);
clear_problem_context(&cd.pctx);
#ifdef MTRACE
mtrace_print("Pass 2");
#endif
if (!(ctx->options & E2F_OPT_PREEN))
fix_problem(ctx, PR_2_PASS_HEADER, &cd.pctx);
e2fsck_setup_tdb_icount(ctx, EXT2_ICOUNT_OPT_INCREMENT,
&ctx->inode_count);
if (ctx->inode_count)
cd.pctx.errcode = 0;
else {
e2fsck_set_bitmap_type(fs, EXT2FS_BMAP64_RBTREE,
"inode_count", &save_type);
cd.pctx.errcode = ext2fs_create_icount2(fs,
EXT2_ICOUNT_OPT_INCREMENT,
0, ctx->inode_link_info,
&ctx->inode_count);
fs->default_bitmap_type = save_type;
}
if (cd.pctx.errcode) {
fix_problem(ctx, PR_2_ALLOCATE_ICOUNT, &cd.pctx);
ctx->flags |= E2F_FLAG_ABORT;
return;
}
buf = (char *) e2fsck_allocate_memory(ctx, 2*fs->blocksize,
"directory scan buffer");
/*
* Set up the parent pointer for the root directory, if
* present. (If the root directory is not present, we will
* create it in pass 3.)
*/
(void) e2fsck_dir_info_set_parent(ctx, EXT2_ROOT_INO, EXT2_ROOT_INO);
cd.buf = buf;
cd.ctx = ctx;
cd.count = 1;
cd.max = ext2fs_dblist_count2(fs->dblist);
if (ctx->progress)
(void) (ctx->progress)(ctx, 2, 0, cd.max);
if (fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX)
ext2fs_dblist_sort2(fs->dblist, special_dir_block_cmp);
cd.pctx.errcode = ext2fs_dblist_iterate2(fs->dblist, check_dir_block,
&cd);
if (ctx->flags & E2F_FLAG_SIGNAL_MASK || ctx->flags & E2F_FLAG_RESTART)
return;
if (ctx->flags & E2F_FLAG_RESTART_LATER) {
ctx->flags |= E2F_FLAG_RESTART;
return;
}
if (cd.pctx.errcode) {
fix_problem(ctx, PR_2_DBLIST_ITERATE, &cd.pctx);
ctx->flags |= E2F_FLAG_ABORT;
return;
}
#ifdef ENABLE_HTREE
for (i=0; (dx_dir = e2fsck_dx_dir_info_iter(ctx, &i)) != 0;) {
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
return;
if (dx_dir->numblocks == 0)
continue;
clear_problem_context(&pctx);
bad_dir = 0;
pctx.dir = dx_dir->ino;
dx_db = dx_dir->dx_block;
if (dx_db->flags & DX_FLAG_REFERENCED)
dx_db->flags |= DX_FLAG_DUP_REF;
else
dx_db->flags |= DX_FLAG_REFERENCED;
/*
* Find all of the first and last leaf blocks, and
* update their parent's min and max hash values
*/
for (b=0, dx_db = dx_dir->dx_block;
b < dx_dir->numblocks;
b++, dx_db++) {
if ((dx_db->type != DX_DIRBLOCK_LEAF) ||
!(dx_db->flags & (DX_FLAG_FIRST | DX_FLAG_LAST)))
continue;
dx_parent = &dx_dir->dx_block[dx_db->parent];
/*
* XXX Make sure dx_parent->min_hash > dx_db->min_hash
*/
if (dx_db->flags & DX_FLAG_FIRST)
dx_parent->min_hash = dx_db->min_hash;
/*
* XXX Make sure dx_parent->max_hash < dx_db->max_hash
*/
if (dx_db->flags & DX_FLAG_LAST)
dx_parent->max_hash = dx_db->max_hash;
}
for (b=0, dx_db = dx_dir->dx_block;
b < dx_dir->numblocks;
b++, dx_db++) {
pctx.blkcount = b;
pctx.group = dx_db->parent;
code = 0;
if (!(dx_db->flags & DX_FLAG_FIRST) &&
(dx_db->min_hash < dx_db->node_min_hash)) {
pctx.blk = dx_db->min_hash;
pctx.blk2 = dx_db->node_min_hash;
code = PR_2_HTREE_MIN_HASH;
fix_problem(ctx, code, &pctx);
bad_dir++;
}
if (dx_db->type == DX_DIRBLOCK_LEAF) {
depth = htree_depth(dx_dir, dx_db);
if (depth != dx_dir->depth) {
pctx.num = dx_dir->depth;
code = PR_2_HTREE_BAD_DEPTH;
fix_problem(ctx, code, &pctx);
bad_dir++;
}
}
/*
* This test doesn't apply for the root block
* at block #0
*/
if (b &&
(dx_db->max_hash > dx_db->node_max_hash)) {
pctx.blk = dx_db->max_hash;
pctx.blk2 = dx_db->node_max_hash;
code = PR_2_HTREE_MAX_HASH;
fix_problem(ctx, code, &pctx);
bad_dir++;
}
if (!(dx_db->flags & DX_FLAG_REFERENCED)) {
code = PR_2_HTREE_NOTREF;
fix_problem(ctx, code, &pctx);
bad_dir++;
} else if (dx_db->flags & DX_FLAG_DUP_REF) {
code = PR_2_HTREE_DUPREF;
fix_problem(ctx, code, &pctx);
bad_dir++;
}
}
if (bad_dir && fix_problem(ctx, PR_2_HTREE_CLEAR, &pctx)) {
clear_htree(ctx, dx_dir->ino);
dx_dir->numblocks = 0;
}
}
e2fsck_free_dx_dir_info(ctx);
#endif
ext2fs_free_mem(&buf);
ext2fs_free_dblist(fs->dblist);
if (ctx->inode_bad_map) {
ext2fs_free_inode_bitmap(ctx->inode_bad_map);
ctx->inode_bad_map = 0;
}
if (ctx->inode_reg_map) {
ext2fs_free_inode_bitmap(ctx->inode_reg_map);
ctx->inode_reg_map = 0;
}
clear_problem_context(&pctx);
if (ctx->large_files) {
if (!(sb->s_feature_ro_compat &
EXT2_FEATURE_RO_COMPAT_LARGE_FILE) &&
fix_problem(ctx, PR_2_FEATURE_LARGE_FILES, &pctx)) {
sb->s_feature_ro_compat |=
EXT2_FEATURE_RO_COMPAT_LARGE_FILE;
fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
ext2fs_mark_super_dirty(fs);
}
if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) {
ext2fs_update_dynamic_rev(fs);
ext2fs_mark_super_dirty(fs);
}
}
print_resource_track(ctx, _("Pass 2"), &rtrack, fs->io);
}
/*
* This makes sure the root inode is present; if not, we ask if the
* user wants us to create it. Not creating it is a fatal error.
*/
static void check_root(e2fsck_t ctx)
{
ext2_filsys fs = ctx->fs;
blk64_t blk;
struct ext2_inode inode;
char * block;
struct problem_context pctx;
clear_problem_context(&pctx);
if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO)) {
/*
* If the root inode is not a directory, die here. The
* user must have answered 'no' in pass1 when we
* offered to clear it.
*/
if (!(ext2fs_test_inode_bitmap2(ctx->inode_dir_map,
EXT2_ROOT_INO))) {
fix_problem(ctx, PR_3_ROOT_NOT_DIR_ABORT, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
}
return;
}
if (!fix_problem(ctx, PR_3_NO_ROOT_INODE, &pctx)) {
fix_problem(ctx, PR_3_NO_ROOT_INODE_ABORT, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
return;
}
e2fsck_read_bitmaps(ctx);
/*
* First, find a free block
*/
pctx.errcode = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
if (pctx.errcode) {
pctx.str = "ext2fs_new_block";
fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
return;
}
ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
ext2fs_mark_block_bitmap2(fs->block_map, blk);
ext2fs_mark_bb_dirty(fs);
/*
* Now let's create the actual data block for the inode
*/
pctx.errcode = ext2fs_new_dir_block(fs, EXT2_ROOT_INO, EXT2_ROOT_INO,
&block);
if (pctx.errcode) {
pctx.str = "ext2fs_new_dir_block";
fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
return;
}
pctx.errcode = ext2fs_write_dir_block4(fs, blk, block, 0,
EXT2_ROOT_INO);
if (pctx.errcode) {
pctx.str = "ext2fs_write_dir_block";
fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
return;
}
ext2fs_free_mem(&block);
/*
* Set up the inode structure
*/
memset(&inode, 0, sizeof(inode));
inode.i_mode = 040755;
inode.i_size = fs->blocksize;
inode.i_atime = inode.i_ctime = inode.i_mtime = ctx->now;
inode.i_links_count = 2;
ext2fs_iblk_set(fs, &inode, 1);
inode.i_block[0] = blk;
/*
* Write out the inode.
*/
pctx.errcode = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
if (pctx.errcode) {
pctx.str = "ext2fs_write_inode";
fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
ctx->flags |= E2F_FLAG_ABORT;
return;
}
/*
* Miscellaneous bookkeeping...
*/
e2fsck_add_dir_info(ctx, EXT2_ROOT_INO, EXT2_ROOT_INO);
ext2fs_icount_store(ctx->inode_count, EXT2_ROOT_INO, 2);
ext2fs_icount_store(ctx->inode_link_info, EXT2_ROOT_INO, 2);
ext2fs_mark_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO);
ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, EXT2_ROOT_INO);
ext2fs_mark_inode_bitmap2(fs->inode_map, EXT2_ROOT_INO);
ext2fs_mark_ib_dirty(fs);
}
