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reiserfsprogs/utils/fsck/semantic_check.c
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/*
* Copyright 1996-2004 by Hans Reiser, licensing governed by reiserfsprogs/README
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "fsck.h"
#include "misc/malloc.h"
#include "misc/unaligned.h"
#include "misc/misc.h"
#include "util/misc.h"
#include <sys/stat.h>
static reiserfs_key_t *trunc_links = NULL;
static __u32 links_num = 0;
int wrong_mode (reiserfs_key_t * key, __u16 * mode, __u64 real_size, int symlink);
int wrong_fdb (reiserfs_key_t * key, int blocksize, __u32 * first_direct_byte,
__u32 sd_fdb, __u32 size);
void get_object_key (reiserfs_deh_t * deh, reiserfs_key_t * key,
reiserfs_key_t * entry_key, reiserfs_ih_t * ih);
struct path_key {
struct short_key {
__u32 k_dir_id;
__u32 k_objectid;
} key;
struct path_key * next, * prev;
};
struct path_key * head_key = NULL;
struct path_key * tail_key = NULL;
static int check_path_key(reiserfs_key_t * key) {
struct path_key * cur = head_key;
while(cur != NULL) {
if (!reiserfs_key_comp2(&cur->key, key)) {
fsck_log("\nsemantic check: The directory %k has 2 names.", key);
return LOOP_FOUND;
}
cur = cur->next;
}
return 0;
}
static int add_path_key(reiserfs_key_t * key) {
if (check_path_key(key))
return LOOP_FOUND;
if (tail_key == NULL) {
tail_key = misc_getmem(sizeof(struct path_key));
head_key = tail_key;
tail_key->prev = NULL;
} else {
tail_key->next = misc_getmem(sizeof(struct path_key));
tail_key->next->prev = tail_key;
tail_key = tail_key->next;
}
reiserfs_key_copy2 ((reiserfs_key_t *)&tail_key->key, key);
tail_key->next = NULL;
return 0;
}
static void del_path_key() {
if (tail_key == NULL)
misc_die("Wrong path_key structure");
if (tail_key->prev == NULL) {
misc_freemem(tail_key);
tail_key = head_key = NULL;
} else {
tail_key = tail_key->prev;
misc_freemem(tail_key->next);
tail_key->next = NULL;
}
}
/* path is path to stat data. If file will be relocated - new_ih will contain
a key file was relocated with */
static int check_check_regular_file (reiserfs_path_t * path, void * sd,
reiserfs_ih_t * new_ih)
{
int is_new_file;
// reiserfs_key_t key, sd_key;
__u16 mode;
__u32 nlink;
__u64 real_size, sd_size;
__u32 blocks, sd_blocks; /* proper values and value in stat data */
__u32 first_direct_byte, sd_fdb;
reiserfs_ih_t * ih, sd_ih;
int fix_sd;
int symlnk = 0;
int retval = OK;
int tmp_position;
ih = REISERFS_PATH_IH (path);
if (new_ih) {
/* this objectid is used already */
*new_ih = *ih;
reiserfs_tree_pathrelse (path);
fsck_file_relocate (&new_ih->ih_key, 1);
fsck_relocate_mklinked(&new_ih->ih_key);
one_less_corruption (fs, FIXABLE);
sem_pass_stat (fs)->oid_sharing_files_relocated ++;
retval = RELOCATED;
if (reiserfs_tree_search_item (fs, &(new_ih->ih_key), path) ==
ITEM_NOT_FOUND)
{
reiserfs_panic ("%s: Could not find a StatData of the relocated "
"file %K", __FUNCTION__, &new_ih->ih_key);
}
/* stat data is marked unreachable again due to relocation, fix that */
ih = REISERFS_PATH_IH (path);
sd = REISERFS_PATH_ITEM (path);
}
if (reiserfs_ih_get_len (ih) == REISERFS_SD_SIZE)
is_new_file = 1;
else
is_new_file = 0;
reiserfs_stat_get_nlink (ih, sd, &nlink);
reiserfs_stat_get_mode (ih, sd, &mode);
reiserfs_stat_get_size (ih, sd, &sd_size);
reiserfs_stat_get_blocks (ih, sd, &sd_blocks);
/*
if (fsck_mode (fs) == FSCK_FIX_FIXABLE) {
// check and set nlink first
nlink ++;
reiserfs_stat_set_nlink (ih, sd, &nlink);
reiserfs_buffer_mkdirty (bh);
if (nlink > 1)
return OK;
}
*/
if (!is_new_file)
reiserfs_stat_get_fdb (ih, sd, &sd_fdb);
if (S_ISLNK (mode))
symlnk = 1;
sd_ih = *ih;
// sd_key = sd_ih.ih_key;
reiserfs_tree_pathrelse (path);
if (are_file_items_correct (&sd_ih, sd, &real_size, &blocks,
0/* do not mark reachable */, &symlnk) != 1)
{
one_more_corruption (fs, FATAL);
fsck_log ("check_regular_file: The file %K with the corrupted "
"structure found\n", &sd_ih.ih_key);
} else {
fix_sd = 0;
fix_sd += wrong_mode (&sd_ih.ih_key, &mode, real_size, symlnk);
if (!is_new_file)
fix_sd += wrong_fdb (&sd_ih.ih_key, fs->fs_blocksize,
&first_direct_byte, sd_fdb, real_size);
if (misc_bin_search(&sd_ih.ih_key, trunc_links, links_num,
sizeof(sd_ih.ih_key), &tmp_position,
reiserfs_key_comp2) != 1)
{
fix_sd += wrong_st_size (&sd_ih.ih_key, is_new_file ?
REISERFS_SD_SIZE_MAX_V2 :
REISERFS_SD_SIZE_MAX_V1,
fs->fs_blocksize, &real_size,
sd_size, symlnk ? TYPE_SYMLINK : 0);
} else {
real_size = sd_size;
}
fix_sd += wrong_st_blocks (&sd_ih.ih_key, &blocks,
sd_blocks, mode, is_new_file);
if (fix_sd) {
if (fsck_mode (fs) == FSCK_FIX_FIXABLE) {
reiserfs_bh_t * bh;
/* find stat data and correct it */
reiserfs_key_set_sec (KEY_FORMAT_1, &sd_ih.ih_key,
OFFSET_SD, TYPE_STAT_DATA);
if (reiserfs_tree_search_item (fs, &sd_ih.ih_key, path) !=
ITEM_FOUND)
{
fsck_log ("check_regular_file: A StatData of the file %K "
"cannot be found\n", &sd_ih.ih_key);
one_more_corruption (fs, FATAL);
return STAT_DATA_NOT_FOUND;
}
bh = REISERFS_PATH_LEAF (path);
ih = REISERFS_PATH_IH (path);
sd = REISERFS_PATH_ITEM (path);
reiserfs_stat_set_size (ih, sd, &real_size);
reiserfs_stat_set_blocks (ih, sd, &blocks);
reiserfs_stat_set_mode (ih, sd, &mode);
if (!is_new_file)
reiserfs_stat_set_fdb (ih, sd, &first_direct_byte);
reiserfs_buffer_mkdirty (bh);
} else {
fsck_check_stat (fs)->fixable_corruptions += fix_sd;
}
}
}
return retval;
}
/* returns buffer, containing found directory item.*/
static char * get_next_directory_item (
/* on return this will contain key of next item in the tree */
reiserfs_key_t * key,
const reiserfs_key_t * parent,
reiserfs_ih_t * ih,
__u32 * pos_in_item,
int dir_format)
{
const reiserfs_key_t * rdkey;
REISERFS_PATH_INIT (path);
reiserfs_deh_t * deh;
reiserfs_bh_t * bh;
char * dir_item;
int entry_len;
int retval;
int i;
start_again:
retval = reiserfs_tree_search_entry (fs, key, &path);
if (retval != POSITION_FOUND &&
reiserfs_key_get_off (key) != OFFSET_DOT)
{
reiserfs_panic ("get_next_directory_item: The current "
"directory %k cannot be found", key);
}
/* leaf containing directory item */
bh = REISERFS_PATH_LEAF (&path);
*pos_in_item = path.pos_in_item;
*ih = *REISERFS_PATH_IH (&path);
deh = reiserfs_deh (bh, ih);
/* position was not found for '.' or there is no '..' */
if (retval != POSITION_FOUND ||
((reiserfs_key_get_off (key) == OFFSET_DOT) &&
(reiserfs_ih_get_entries (ih) < 2 ||
reiserfs_direntry_name_len (ih, deh + 1, 1) != 2 ||
strncmp (reiserfs_deh_name (deh + 1, 1), "..", 2))))
{
fsck_log ("get_next_directory_item: The %s %k cannot be found in %k",
(retval == POSITION_NOT_FOUND) ? "entry" : "directory",
key, &ih->ih_key);
if (fsck_mode (fs) == FSCK_FIX_FIXABLE) {
/* add "." and ".." exist */
reiserfs_tree_pathrelse (&path);
entry_len = reiserfs_direntry_entry_estimate (".", dir_format);
reiserfs_tree_insert_entry (fs, key, ".", entry_len, key, 0);
entry_len = reiserfs_direntry_entry_estimate ("..", dir_format);
reiserfs_tree_insert_entry (fs, key, "..", entry_len, parent, 0);
fsck_log (" - entry was added\n");
goto start_again;
} else {
one_more_corruption (fs, FIXABLE);
fsck_log ("\n");
if (retval == DIRECTORY_NOT_FOUND)
return 0;
}
}
/* mark hidden entries as visible, set "." and ".." correctly */
deh += *pos_in_item;
for (i = *pos_in_item; i < reiserfs_ih_get_entries (ih); i ++, deh ++) {
if (reiserfs_deh_get_off (deh) == OFFSET_DOT) {
if (reiserfs_key_comp2 (&(deh->deh2_dir_id), key)) {
/* "." must point to the directory it is in */
//deh->deh_objectid != REISERFS_ROOT_PARENT_OBJECTID)/*????*/ {
fsck_log ("get_next_directory_item: The entry \".\" of the "
"directory %K points to %K, instead of %K", key,
(reiserfs_key_t *)(&(deh->deh2_dir_id)), key);
if (fsck_mode (fs) == FSCK_FIX_FIXABLE) {
reiserfs_deh_set_did (deh, reiserfs_key_get_did (key));
reiserfs_deh_set_obid (deh, reiserfs_key_get_oid (key));
reiserfs_buffer_mkdirty (bh);
fsck_log (" - corrected\n");
} else {
one_more_corruption (fs, FIXABLE);
fsck_log ("\n");
}
}
}
if (reiserfs_deh_get_off (deh) == OFFSET_DOT_DOT) {
/* set ".." so that it points to the correct parent directory */
if (reiserfs_key_comp2 (&(deh->deh2_dir_id), parent)) {
fsck_log ("get_next_directory_item: The entry \"..\" of the "
"directory %K points to %K, instead of %K", key,
(reiserfs_key_t *)(&(deh->deh2_dir_id)), parent);
if (fsck_mode (fs) == FSCK_FIX_FIXABLE) {
reiserfs_deh_set_did (deh, reiserfs_key_get_did (parent));
reiserfs_deh_set_obid (deh, reiserfs_key_get_oid (parent));
reiserfs_buffer_mkdirty (bh);
fsck_log (" - corrected\n");
} else {
one_more_corruption (fs, FIXABLE);
fsck_log ("\n");
}
}
}
}
/* copy directory item to the temporary buffer */
dir_item = misc_getmem (reiserfs_ih_get_len (ih));
memcpy (dir_item, reiserfs_item_by_ih (bh, ih), reiserfs_ih_get_len (ih));
/* next item key */
if (REISERFS_PATH_LEAF_POS (&path) == (reiserfs_node_items (bh) - 1) &&
(rdkey = reiserfs_tree_rkey (&path, fs)))
reiserfs_key_copy (key, rdkey);
else {
reiserfs_key_set_did (key, 0);
reiserfs_key_set_oid (key, 0);
}
if (fsck_mode (fs) == FSCK_REBUILD)
fsck_item_mkreach (REISERFS_PATH_IH (&path), bh);
reiserfs_tree_pathrelse (&path);
return dir_item;
}
/* semantic pass of --check */
static int check_semantic_pass (const reiserfs_key_t * key,
const reiserfs_key_t * parent,
int dot_dot,
reiserfs_ih_t * new_ih)
{
reiserfs_path_t path;
void * sd;
__u32 nlink;
int is_new_dir;
reiserfs_bh_t * bh;
reiserfs_ih_t * ih;
int retval;
char * dir_item;
__u32 pos_in_item;
reiserfs_ih_t tmp_ih;
reiserfs_key_t next_item_key, entry_key, object_key;
__u64 dir_size = 0;
__u32 blocks;
__u64 sd_size;
__u32 sd_blocks;
int fix_sd;
/*int relocate;*/
int dir_format = 0;
__u16 mode;
retval = OK;
/* start_again: when directory was relocated */
if (!reiserfs_key_stat (key)) {
fsck_log ("%s: The key %k must be key of a StatData\n",
__FUNCTION__, key);
one_more_corruption (fs, FATAL);
return STAT_DATA_NOT_FOUND;
}
/* look for stat data of an object */
if (reiserfs_tree_search_item (fs, key, &path) == ITEM_NOT_FOUND) {
reiserfs_tree_pathrelse (&path);
return STAT_DATA_NOT_FOUND;
}
/* stat data has been found */
ih = REISERFS_PATH_IH (&path);
sd = REISERFS_PATH_ITEM(&path);
reiserfs_stat_get_nlink (ih, sd, &nlink);
/* It seems quite difficult to relocate objects on fix-fixable -
* rewrite_file calls reiserfs_file_write which can convert tails
* to unfm, plus unreachable, was_tail flags, etc. */
#if 0
if ((/* relocate = */ should_be_relocated(&ih->ih_key))) {
/*
if (fsck_mode(fs) == FSCK_CHECK)
relocate = 0;
*/
one_more_corruption(fs, FATAL);
}
#endif
if (fix_obviously_wrong_sd_mode (&path)) {
one_more_corruption (fs, FIXABLE);
reiserfs_tree_pathrelse (&path);
return OK;
}
if (nlink == 0) {
fsck_log ("%s: block %lu: The StatData %k has "
"bad nlink number (%u)\n", __FUNCTION__,
REISERFS_PATH_LEAF(&path)->b_blocknr,
&ih->ih_key, nlink);
one_more_corruption (fs, FATAL);
}
if (not_a_directory (sd)) {
fsck_check_stat (fs)->files ++;
retval = check_check_regular_file (&path, sd, 0);
reiserfs_tree_pathrelse (&path);
return retval;
}
/*
if (relocate) {
if (!new_ih)
reiserfs_panic ("%s: Memory is not prepared for relocation of %K",
__FUNCTION__, &ih->ih_key);
*new_ih = *ih;
reiserfs_tree_pathrelse (&path);
sem_pass_stat (fs)->oid_sharing_dirs_relocated ++;
relocate_dir (new_ih, 1);
fsck_relocate_mklinked(&new_ih->ih_key);
one_less_corruption (fs, FIXABLE);
*key = new_ih->ih_key;
retval = RELOCATED;
goto start_again;
}
*/
/*
if (fsck_mode (fs) == FSCK_FIX_FIXABLE) {
// it looks like stat data of a directory found
if (nlink) {
// we saw this directory already
if (!dot_dot) {
// this name is not ".." - and hard links are not
// allowed on directories
reiserfs_tree_pathrelse (&path);
return STAT_DATA_NOT_FOUND;
} else {
// ".." found
nlink ++;
reiserfs_stat_set_nlink (ih, sd, &nlink);
reiserfs_buffer_mkdirty (REISERFS_PATH_LEAF (&path));
reiserfs_tree_pathrelse (&path);
return OK;
}
} // do not run it for dot_dot on check at all
nlink = 2;
if (reiserfs_key_get_oid (key) == REISERFS_ROOT_OBJECTID)
nlink ++;
reiserfs_stat_set_nlink (ih, sd, &nlink);
reiserfs_buffer_mkdirty (REISERFS_PATH_LEAF (&path));
}
*/
/* directory stat data found */
if (reiserfs_ih_get_len (ih) == REISERFS_SD_SIZE)
is_new_dir = 1;
else
is_new_dir = 0;
/* save stat data's size and st_blocks */
reiserfs_stat_get_size (ih, sd, &sd_size);
reiserfs_stat_get_blocks (ih, sd, &sd_blocks);
reiserfs_stat_get_mode (ih, sd, &mode);
dir_format = (reiserfs_ih_get_len (REISERFS_PATH_IH (&path)) ==
REISERFS_SD_SIZE) ? KEY_FORMAT_2 : KEY_FORMAT_1;
/* release path pointing to stat data */
reiserfs_tree_pathrelse (&path);
fsck_check_stat (fs)->dirs ++;
reiserfs_key_set_did (&next_item_key, reiserfs_key_get_did (key));
reiserfs_key_set_oid (&next_item_key, reiserfs_key_get_oid (key));
reiserfs_key_set_off1 (&next_item_key, OFFSET_DOT);
reiserfs_key_set_uni (&next_item_key, UNI_DE);
dir_size = 0;
while ((dir_item = get_next_directory_item (&next_item_key, parent, &tmp_ih,
&pos_in_item, dir_format)) != 0)
{
/* dir_item is copy of the item in separately allocated memory,
item_key is a key of next item in the tree */
int i;
char name[REISERFS_NAME_MAX];
int namelen, entry_len;
reiserfs_deh_t * deh = (reiserfs_deh_t *)dir_item + pos_in_item;
for (i = pos_in_item;
i < reiserfs_ih_get_entries (&tmp_ih);
i ++, deh ++)
{
reiserfs_ih_t relocated_ih;
int ret = OK;
name[0] = '\0';
namelen = reiserfs_direntry_name_len (&tmp_ih, deh, i);
sprintf(name, "%.*s", namelen, reiserfs_deh_name (deh, i));
entry_len = reiserfs_direntry_entry_len (&tmp_ih, deh, i);
get_object_key (deh, &object_key, &entry_key, &tmp_ih);
if ((dir_format == KEY_FORMAT_2) && (entry_len % 8 != 0)) {
/* not alighed directory of new format - delete it */
if (fsck_mode (fs) == FSCK_FIX_FIXABLE) {
fsck_log ("Entry %K (\"%.*s\") in the directory %K is not "
"formated properly - deleted\n",
(reiserfs_key_t *)&(deh->deh2_dir_id), namelen,
name, &tmp_ih.ih_key);
reiserfs_tree_delete_entry (fs, &entry_key);
entry_len =
reiserfs_direntry_entry_estimate (name, dir_format);
reiserfs_tree_insert_entry (fs, key, name, entry_len,
(reiserfs_key_t *)&(deh->deh2_dir_id), 0);
} else {
fsck_log ("Entry %K (\"%.*s\") in the directory %K is "
"not formated properly.\n",
(reiserfs_key_t *)&(deh->deh2_dir_id),
namelen, name, &tmp_ih.ih_key);
one_more_corruption (fs, FIXABLE);
}
}
if (!reiserfs_hash_correct (&fs->hash, name,
namelen, reiserfs_deh_get_off (deh)))
{
one_more_corruption (fs, FATAL);
fsck_log ("%s: Hash mismatch detected for (%.*s) in directory "
"%K\n", __FUNCTION__, namelen, name, &tmp_ih.ih_key);
}
if (is_dot (name, namelen) || (is_dot_dot (name, namelen))) {
/* do not go through "." and ".." */
ret = OK;
} else {
if (!fsck_quiet(fs)) {
util_misc_print_name (fsck_progress_file(fs),
name, namelen);
}
if ((ret = add_path_key (&object_key)) == 0) {
ret = check_semantic_pass (&object_key, key,
is_dot_dot(name, namelen),
&relocated_ih);
del_path_key ();
}
if (!fsck_quiet(fs)) {
util_misc_erase_name (fsck_progress_file(fs),
namelen);
}
}
/* check what check_semantic_tree returned */
switch (ret) {
case OK:
dir_size += REISERFS_DEH_SIZE + entry_len;
break;
case STAT_DATA_NOT_FOUND:
fsck_log ("%s: Name \"%.*s\" in directory %K points to "
"nowhere\n", __FUNCTION__, namelen, name,
&tmp_ih.ih_key);
case LOOP_FOUND:
if (fsck_mode (fs) == FSCK_FIX_FIXABLE) {
reiserfs_tree_delete_entry (fs, &entry_key);
fsck_log (" - removed");
} else {
one_more_corruption (fs, FIXABLE);
}
fsck_log ("\n");
break;
case DIRECTORY_HAS_NO_ITEMS:
fsck_log ("%s: Name \"%.*s\" in directory %K points a "
"directory without body\n", __FUNCTION__,
namelen, name, &tmp_ih.ih_key);
/* fixme: stat data should be deleted as well */
/*
if (fsck_fix_fixable (fs)) {
reiserfs_tree_delete_entry (fs, &entry_key);
fsck_data(fs)->deleted_entries ++;
fsck_log (" - removed");
}
fsck_log ("\n");*/
break;
case RELOCATED:
/* file was relocated, update key in corresponding direntry */
if (reiserfs_tree_search_entry (fs, &entry_key, &path) !=
POSITION_FOUND)
{
fsck_log("Cannot find a name of the relocated file %K in "
"the directory %K\n", &entry_key, &tmp_ih.ih_key);
} else {
/* update key dir entry points to */
reiserfs_deh_t * tmp_deh;
tmp_deh = reiserfs_deh (REISERFS_PATH_LEAF (&path),
REISERFS_PATH_IH (&path)) +
path.pos_in_item;
fsck_log ("The directory %K pointing to %K (\"%.*s\") "
"updated to point to ", &tmp_ih.ih_key,
&tmp_deh->deh2_dir_id, namelen, name);
reiserfs_deh_set_did (tmp_deh,
reiserfs_key_get_did (&relocated_ih.ih_key));
reiserfs_deh_set_obid (tmp_deh,
reiserfs_key_get_oid (&relocated_ih.ih_key));
fsck_log ("%K (\"%.*s\")\n", &tmp_deh->deh2_dir_id,
namelen, name);
reiserfs_buffer_mkdirty (REISERFS_PATH_LEAF (&path));
}
dir_size += REISERFS_DEH_SIZE + entry_len;
reiserfs_tree_pathrelse (&path);
break;
}
} /* for */
misc_freemem (dir_item);
if (reiserfs_key_comp2 (&next_item_key, key))
/* next key is not of this directory */
break;
} /* while (dir_item) */
if (dir_size == 0)
/* FIXME: is it possible? */
return DIRECTORY_HAS_NO_ITEMS;
/* calc correct value of sd_blocks field of stat data */
blocks = REISERFS_DIR_BLOCKS (dir_size);
fix_sd = 0;
fix_sd += wrong_st_blocks (key, &blocks, sd_blocks, mode, is_new_dir);
fix_sd += wrong_st_size (key, is_new_dir ? REISERFS_SD_SIZE_MAX_V2 :
REISERFS_SD_SIZE_MAX_V1, fs->fs_blocksize,
&dir_size, sd_size, TYPE_DIRENTRY);
if (fix_sd) {
if (fsck_mode (fs) == FSCK_FIX_FIXABLE) {
/* we have to fix either sd_size or sd_blocks, look for SD again */
if (reiserfs_tree_search_item (fs, key, &path) != ITEM_FOUND) {
fsck_log ("%s: The StatData of the file %K was not found\n",
__FUNCTION__, key);
one_more_corruption(fs, FATAL);
return STAT_DATA_NOT_FOUND;
}
bh = REISERFS_PATH_LEAF (&path);
ih = REISERFS_PATH_IH (&path);
sd = REISERFS_PATH_ITEM (&path);
reiserfs_stat_set_size (ih, sd, &dir_size);
reiserfs_stat_set_blocks (ih, sd, &blocks);
reiserfs_buffer_mkdirty (bh);
reiserfs_tree_pathrelse (&path);
} else {
fsck_check_stat (fs)->fixable_corruptions += fix_sd;
}
}
return retval;
}
int check_safe_links ()
{
reiserfs_path_t safe_link_path, path;
reiserfs_key_t safe_link_key = {-1, 0, {{0, 0}}};
reiserfs_key_t key = {0, 0, {{0, 0}}};
const reiserfs_key_t * rkey;
reiserfs_ih_t * tmp_ih;
while (1) {
if (reiserfs_key_get_did (&safe_link_key) == 0)
break;
reiserfs_tree_search_item (fs, &safe_link_key, &safe_link_path);
if (reiserfs_nh_get_items( NODE_HEAD(REISERFS_PATH_LEAF(&safe_link_path))) <=
REISERFS_PATH_LEAF_POS (&safe_link_path))
{
reiserfs_tree_pathrelse (&safe_link_path);
break;
}
tmp_ih = REISERFS_PATH_IH(&safe_link_path);
if (reiserfs_key_get_did(&tmp_ih->ih_key) != (__u32)-1 ||
reiserfs_key_get_oid(&tmp_ih->ih_key) == (__u32)-1) {
reiserfs_tree_pathrelse (&safe_link_path);
break;
}
if (reiserfs_ih_get_len (tmp_ih) != 4)
reiserfs_panic ("Safe Link %k cannot be of the size %d",
&tmp_ih->ih_key, reiserfs_ih_get_len (tmp_ih));
reiserfs_key_set_did(&key, d32_get((__u32 *)REISERFS_PATH_ITEM(&safe_link_path), 0));
reiserfs_key_set_oid(&key, reiserfs_key_get_oid(&tmp_ih->ih_key));
if ((rkey = reiserfs_tree_next_key(&safe_link_path, fs)) == NULL)
reiserfs_key_set_did (&safe_link_key, 0);
else
safe_link_key = *rkey;
if (reiserfs_tree_search_item (fs, &key, &path) == ITEM_NOT_FOUND) {
/*sware on check, delete on fix-fixable*/
if (fsck_mode(fs) == FSCK_CHECK) {
fsck_log ("Invalid safe link %k: cannot find the pointed "
"object (%K)\n", &tmp_ih->ih_key, &key);
one_more_corruption (fs, FIXABLE);
} else if (fsck_mode(fs) == FSCK_FIX_FIXABLE) {
fsck_log ("Invalid safe link %k: cannot find the pointed "
"object (%K) - safe link was deleted\n",
&tmp_ih->ih_key, &key);
d32_put((__u32 *)REISERFS_PATH_ITEM(&safe_link_path), 0, 0);
reiserfs_tree_pathrelse (&path);
reiserfs_tree_delete (fs, &safe_link_path, 0);
continue;
}
} else if (reiserfs_key_get_off(&tmp_ih->ih_key) == 0x1) {
/* Truncate */
if (!not_a_directory (REISERFS_PATH_ITEM(&path))) {
/*truncate on directory should not happen*/
/*sware on check, delete on fix-fixable*/
if (fsck_mode(fs) == FSCK_CHECK) {
fsck_log ("Invalid 'truncate' safe link %k, cannot happen "
"for directory (%K)\n", &tmp_ih->ih_key, &key);
one_more_corruption (fs, FIXABLE);
} else if (fsck_mode(fs) == FSCK_FIX_FIXABLE) {
fsck_log ("Invalid 'truncate' safe link %k, cannot happen "
"for a directory (%K) - safe link was deleted\n",
&tmp_ih->ih_key, &key);
d32_put((__u32 *)REISERFS_PATH_ITEM(&safe_link_path), 0, 0);
reiserfs_tree_pathrelse (&path);
reiserfs_tree_delete (fs, &safe_link_path, 0);
continue;
}
} else {
/* save 'safe truncate links' to avoid wrong sizes swaring. */
int position;
if (misc_bin_search (&key, trunc_links, links_num,
sizeof(key), &position,
reiserfs_key_comp2) != 1)
{
blocklist__insert_in_position(&key, (void *)&trunc_links,
&links_num, sizeof(key),
&position);
}
}
}
reiserfs_tree_pathrelse (&path);
reiserfs_tree_pathrelse (&safe_link_path);
}
return OK;
}
void release_safe_links () {
misc_freemem(trunc_links);
}
/* called when --check is given */
void fsck_semantic_check (void) {
if (fsck_data (fs)->check.bad_nodes) {
fsck_progress ("Bad nodes were found, Semantic pass skipped\n");
goto clean;
}
if (fsck_data (fs)->check.fatal_corruptions) {
fsck_progress ("Fatal corruptions were found, Semantic pass skipped\n");
goto clean;
}
fsck_progress ("Checking Semantic tree...\n");
if (fsck_mode(fs) == FSCK_FIX_FIXABLE) {
/*create new_bitmap, and initialize new_bitmap & allocable bitmap*/
fsck_new_bitmap (fs) =
reiserfs_bitmap_create(reiserfs_sb_get_blocks(fs->fs_ondisk_sb));
reiserfs_bitmap_copy (fsck_new_bitmap (fs), fs->fs_bitmap2);
fsck_allocable_bitmap (fs) =
reiserfs_bitmap_create(reiserfs_sb_get_blocks(fs->fs_ondisk_sb));
reiserfs_bitmap_copy (fsck_allocable_bitmap (fs), fs->fs_bitmap2);
fs->block_allocator = reiserfsck_new_blocknrs;
fs->block_deallocator = reiserfsck_free_block;
}
check_safe_links ();
if (check_semantic_pass (&root_dir_key, &parent_root_dir_key, 0, 0) != OK) {
fsck_log ("check_semantic_tree: No root directory found");
one_more_corruption (fs, FATAL);
}
release_safe_links ();
if (fsck_mode(fs) == FSCK_FIX_FIXABLE) {
reiserfs_bitmap_delete (fs->fs_bitmap2);
reiserfs_bitmap_delta (fsck_new_bitmap (fs), fsck_deallocate_bitmap (fs));
fs->fs_bitmap2 = fsck_new_bitmap (fs);
reiserfs_bitmap_delete (fsck_allocable_bitmap (fs));
fsck_allocable_bitmap (fs) = NULL;
reiserfs_sb_set_free (fs->fs_ondisk_sb,
reiserfs_bitmap_zeros (fs->fs_bitmap2));
reiserfs_buffer_mkdirty (fs->fs_super_bh);
reiserfs_badblock_flush(fs, 1);
}
if (!fsck_quiet(fs))
util_misc_fini_name(fsck_progress_file(fs));
clean:
if (fsck_deallocate_bitmap (fs))
reiserfs_bitmap_delete (fsck_deallocate_bitmap (fs));
}
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