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reiserfsprogs/utils/fsck/semantic_rebuild.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/device.h"
#include "util/device.h"
#include "util/misc.h"
#include <sys/stat.h>
#define MIN(a, b) (((a)>(b))?(b):(a))
/* *size is "real" file size, sd_size - size from stat data */
int wrong_st_size (const reiserfs_key_t * key,
unsigned long long max_file_size,
int blocksize,
__u64 * size,
__u64 sd_size, int type)
{
if (sd_size <= max_file_size) {
if (sd_size == *size)
return 0;
if (type == TYPE_DIRENTRY) {
/* directory size must match to the sum of length of its entries */
fsck_log ("vpf-10650: The directory %K has the wrong size in the StatData "
"(%Lu)%s(%Lu)\n", key, sd_size, fsck_mode(fs) == FSCK_CHECK ?
", should be " : " - corrected to ", *size);
return 1;
}
if (sd_size > *size) {
/* size in stat data can be bigger than size calculated by items */
if (fsck_adjust_file_size (fs) || type == TYPE_SYMLINK) {
/* but it -o is given - fix that */
fsck_log ("vpf-10660: The file %K has too big size in the StatData "
"(%Lu)%s(%Lu)\n", key, sd_size, fsck_mode(fs) == FSCK_CHECK ?
", should be " : " - corrected to ", *size);
sem_pass_stat (fs)->fixed_sizes ++;
return 1;
}
*size = sd_size;
return 0;
}
if (!(*size % blocksize)) {
/* last item is extent */
if (((sd_size & ~(blocksize - 1)) == (*size - blocksize)) &&
sd_size % blocksize)
{
/* size in stat data is correct */
*size = sd_size;
return 0;
}
} else {
/* last item is a direct one */
if (!(*size % 8)) {
if (((sd_size & ~7) == (*size - 8)) && sd_size % 8) {
/* size in stat data is correct */
*size = sd_size;
return 0;
}
}
}
}
fsck_log ("vpf-10670: The file %K has the wrong size in the StatData (%Lu)%s(%Lu)\n", key,
sd_size, fsck_mode(fs) == FSCK_CHECK ? ", should be " : " - corrected to ",
*size);
sem_pass_stat (fs)->fixed_sizes ++;
return 1;
}
/* sd_blocks is 32 bit only */
/* old stat data shares sd_block and sd_dev - do not wipe sd_rdev out */
/* we should fix it as following:
|------------------------------------------------------------------|
| | 3.6 | 3.5 |
|---------------------------------------------------| |
| | blocks | r_dev|generation | blocks/r_dev |
|------------------------------------------------------------------|
| fifo, sockets | 0 | generation | 0 |
| chr/blk_dev | 0 | maj:min | maj:min |
| file, dir, link | blocks | generation | blocks |
|------------------------------------------------------------------|
*/
int wrong_st_blocks (const reiserfs_key_t * key,
__u32 * blocks,
__u32 sd_blocks,
__u16 mode,
int new_format)
{
int ret = 0;
if (S_ISREG (mode) || S_ISLNK (mode) || S_ISDIR (mode)) {
if ((!S_ISLNK(mode) && *blocks != sd_blocks) ||
(S_ISLNK(mode) && *blocks != sd_blocks && (MISC_ROUND_UP(*blocks) != sd_blocks))) {
fsck_log ("vpf-10680: The %s %K has the wrong block count in the StatData "
"(%u)%s(%u)\n", S_ISDIR (mode) ? "directory" : S_ISREG (mode) ? "file" : "link", key, sd_blocks,
fsck_mode(fs) == FSCK_CHECK ? ", should be " : " - corrected to ", *blocks);
ret = 1;
}
} else if (new_format || (S_ISFIFO (mode) || S_ISSOCK (mode))) {
if (sd_blocks != 0) {
fsck_log ("vpf-10690: The object %K has the wrong block count in the StatData "
"(%u)%s(%u)\n", key, sd_blocks, fsck_mode(fs) == FSCK_CHECK ?
", should be " : " - corrected to ", 0);
*blocks = 0;
ret = 1;
}
}
return ret;
}
/*
int wrong_st_rdev (reiserfs_key_t * key, __u32 * sd_rdev, __u16 mode, int new_format)
{
int ret = 0;
if (!new_format)
return 0;
if (!S_ISCHR (mode) && !S_ISBLK (mode)) {
if (*sd_rdev != 0) {
fsck_log ("%s %K has wrong sd_rdev %u, has to be 0\n",
S_ISDIR (mode) ? "dir" : "file", key, *sd_rdev);
*sd_rdev = 0;
ret = 1;
}
}
return ret;
}
*/
/* only regular files and symlinks may have items but stat
data. Symlink should have body */
int wrong_mode (reiserfs_key_t * key, __u16 * mode, __u64 real_size, int symlink)
{
int retval = 0;
if (S_ISLNK (*mode) && !symlink) {
fsck_log ("The file %K (%M) is too big to be the symlink%s regfile\n",
key, *mode, fsck_mode(fs) == FSCK_CHECK ? ", should be the" : " - corrected "
"to the");
*mode &= ~S_IFMT;
*mode |= S_IFREG;
retval = 1;
}
if (misc_device_typec (*mode) != '?') {
/* mode looks reasonable */
if (S_ISREG (*mode) || S_ISLNK (*mode))
return retval;
/* device, pipe, socket have no items */
if (!real_size)
return retval;
}
/* there are items, so change file mode to regular file. Otherwise
- file bodies do not get deleted */
if (fsck_mode(fs) == FSCK_CHECK) {
fsck_log ("The object %K has wrong mode (%M)\n", key, *mode);
} else {
fsck_log("The object %K has wrong mode (%M) - corrected to %M\n",
key, *mode, (S_IFREG | 0600));
}
*mode = (S_IFREG | 0600);
return 1;
}
/* key is a key of last file item */
int wrong_fdb (reiserfs_key_t * key, int blocksize,
__u32 * first_direct_byte,
__u32 sd_fdb, __u32 size)
{
if (!size || reiserfs_key_ext (key)) {
/* there is no direct item */
*first_direct_byte = REISERFS_SD_NODIRECT;
if (sd_fdb != REISERFS_SD_NODIRECT) {
if (fsck_mode(fs) == FSCK_CHECK) {
fsck_log ("The file %K: The wrong info about the tail in the StatData, "
"first_direct_byte (%d) - should be (%d)\n", key,
sd_fdb, *first_direct_byte);
} else {
fsck_log ("The file %K: The wrong info about the tail in the StatData, "
"first_direct_byte (%d) - corrected to (%d)\n", key,
sd_fdb, *first_direct_byte);
}
return 1;
}
return 0;
}
/* there is direct item */
*first_direct_byte = (reiserfs_key_get_off (key) & ~(blocksize - 1)) + 1;
if (*first_direct_byte != sd_fdb) {
if (fsck_mode(fs) == FSCK_CHECK) {
fsck_log ("The file %K: The wrong info about the tail in the StatData, "
"first_direct_byte (%d) - should be (%d)\n", key, sd_fdb,
*first_direct_byte);
} else {
fsck_log ("The file %K: The wrong info about the tail in the StatData, "
"first_direct_byte (%d) - corrected to (%d)\n", key, sd_fdb,
*first_direct_byte);
}
return 1;
}
return 0;
}
/* delete all items (but directory ones) with the same key 'ih' has
(including stat data of not a directory) and put them back at the
other place */
void relocate_dir (reiserfs_ih_t * ih) {
const reiserfs_key_t * rkey;
reiserfs_ih_t * path_ih;
reiserfs_path_t path;
__u32 new_objectid;
reiserfs_key_t key;
saveitem_t * si;
int moved;
/* starting with the leftmost one - look for all items of file,
store them and delete */
key = ih->ih_key;
reiserfs_key_set_sec (KEY_FORMAT_1, &key, OFFSET_SD, TYPE_STAT_DATA);
si = 0;
while (1) {
reiserfs_tree_search_item (fs, &key, &path);
if (REISERFS_PATH_LEAF_POS (&path) ==
reiserfs_node_items (REISERFS_PATH_LEAF (&path)))
{
rkey = reiserfs_tree_rkey (&path, fs);
if (rkey && !reiserfs_key_comp2 (&key, rkey)) {
/* file continues in the right neighbor */
key = *rkey;
reiserfs_tree_pathrelse (&path);
continue;
}
/* there is no more items of a directory */
reiserfs_tree_pathrelse (&path);
break;
}
path_ih = REISERFS_PATH_IH (&path);
if (reiserfs_key_comp2 (&key, &(path_ih->ih_key))) {
/* there are no more item with this key */
reiserfs_tree_pathrelse (&path);
break;
}
/* ok, item found, but make sure that it is not a directory one */
if ((reiserfs_ih_stat (path_ih) &&
not_a_directory (REISERFS_PATH_ITEM (&path))) ||
reiserfs_ih_direct (path_ih) || reiserfs_ih_ext (path_ih))
{
/* item of not a directory found. Leave it in the
tree. FIXME: should not happen */
key = path_ih->ih_key;
reiserfs_key_set_off (KEY_FORMAT_1, &key,
reiserfs_key_get_off (&key) + 1);
reiserfs_tree_pathrelse (&path);
continue;
}
/* directory stat data ro directory item */
fsck_item_save(&path, &si);
reiserfs_tree_delete(fs, &path, 1);
}
if (!si) {
fsck_log ("%s: WARNING: No one item of the directory "
"%K found\n", __FUNCTION__, &key);
return;
}
/* get new objectid for relocation or get objectid with which file
was relocated already */
new_objectid = fsck_relocate_oid (&ih->ih_key);
moved = 0;
/* put all items removed back into tree */
while (si) {
reiserfs_key_set_oid (&si->si_ih.ih_key, new_objectid);
if (reiserfs_key_get_off (&(si->si_ih.ih_key)) == OFFSET_DOT) {
/* fix "." entry to point to a directtory properly */
reiserfs_deh_t * deh;
deh = (reiserfs_deh_t *)si->si_dnm_data;
reiserfs_deh_set_obid (deh, new_objectid);
}
fsck_tree_insert_item (&(si->si_ih), si->si_dnm_data, 0);
si = fsck_item_free(si);
moved++;
}
if (moved) {
fsck_log("%s: %d items of dir %K are moved to %u oid\n",
__FUNCTION__, moved, &ih->ih_key, new_objectid);
}
reiserfs_key_set_oid (&ih->ih_key, new_objectid);
}
/* path is path to stat data. If file will be relocated - new_ih will contain
a key file was relocated with */
int rebuild_check_regular_file (reiserfs_path_t * path, void * sd,
reiserfs_ih_t * new_ih)
{
int is_new_file;
// reiserfs_key_t sd_key;
__u16 mode;
__u32 nlink;
__u64 real_size, saved_size;
__u32 blocks, saved_blocks; /* proper values and value in stat data */
__u32 first_direct_byte, saved_fdb;
reiserfs_bh_t * bh;
reiserfs_ih_t * ih, sd_ih;
int fix_sd;
int symlnk = 0;
int retval;
retval = OK;
/* stat data of a file */
ih = REISERFS_PATH_IH (path);
bh = REISERFS_PATH_LEAF (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);
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 the 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);
bh = REISERFS_PATH_LEAF (path);
fsck_item_mkreach (ih, bh);
sd = REISERFS_PATH_ITEM (path);
}
id_map_mark(semantic_id_map(fs), reiserfs_key_get_oid (&ih->ih_key));
/* check and set nlink first */
reiserfs_stat_get_nlink (ih, sd, &nlink);
nlink ++;
reiserfs_stat_set_nlink (ih, sd, &nlink);
reiserfs_buffer_mkdirty (bh);
if (nlink > 1)
return retval;
/* firts name of a file found */
if (reiserfs_ih_get_len (ih) == REISERFS_SD_SIZE)
is_new_file = 1;
else
is_new_file = 0;
reiserfs_stat_get_mode (ih, sd, &mode);
reiserfs_stat_get_size (ih, sd, &saved_size);
reiserfs_stat_get_blocks (ih, sd, &saved_blocks);
if (!is_new_file)
reiserfs_stat_get_fdb (ih, sd, &saved_fdb);
/* we met this file first time */
if (S_ISREG (mode)) {
sem_pass_stat(fs)->regular_files ++;
} else if (S_ISLNK (mode)) {
symlnk = 1;
sem_pass_stat (fs)->symlinks ++;
} else {
sem_pass_stat (fs)->others ++;
}
sd_ih = *ih;
// sd_key = sd_ih.ih_key;
reiserfs_tree_pathrelse (path);
if (are_file_items_correct (&sd_ih, sd, &real_size,
&blocks, 1/*mark reachable*/,
&symlnk) != 1)
{
/* unpassed items will be deleted in pass 4 as they left unaccessed */
fsck_log("%s: some items of %K are left unaccessed.\n",
__FUNCTION__, &sd_ih.ih_key);
sem_pass_stat (fs)->broken_files ++;
}
fix_sd = 0;
fix_sd += wrong_mode (/*&sd_key, */ &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, saved_fdb, real_size);
fix_sd += wrong_st_size (/*&sd_key,*/ &sd_ih.ih_key,
is_new_file ? REISERFS_SD_SIZE_MAX_V2 : REISERFS_SD_SIZE_MAX_V1,
fs->fs_blocksize, &real_size, saved_size, symlnk ? TYPE_SYMLINK : 0);
fix_sd += wrong_st_blocks (&sd_ih.ih_key, &blocks, saved_blocks, mode, is_new_file);
if (fix_sd) {
/* 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)
reiserfs_panic ("%s: The StatData of the file %k could not be found",
__FUNCTION__, &sd_ih.ih_key);
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);
}
return retval;
}
static int is_rootdir_key (const reiserfs_key_t * key)
{
if (reiserfs_key_comp (key, &root_dir_key))
return 0;
return 1;
}
/* returns buffer, containing found directory item.*/
static char * get_next_directory_item (reiserfs_key_t * key, /* on return this will
contain key of next item
in the tree */
const reiserfs_key_t * parent,
reiserfs_ih_t * ih,/*not in tree*/
__u32 * pos_in_item)
{
const reiserfs_key_t * rdkey;
REISERFS_PATH_INIT (path);
reiserfs_deh_t * deh;
reiserfs_bh_t * bh;
char * dir_item;
int retval;
int i;
if ((retval = reiserfs_tree_search_entry (fs, key, &path)) != POSITION_FOUND)
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);
/* make sure, that ".." exists as well */
if (reiserfs_key_get_off (key) == OFFSET_DOT) {
if (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 entry \"..\" cannot be "
"found in %k\n", &ih->ih_key);
reiserfs_tree_pathrelse (&path);
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 ++) {
int namelen;
char * name;
name = reiserfs_deh_name (deh, i);
namelen = reiserfs_direntry_name_len (ih, deh, i);
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);
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");
}
}
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);
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");
}
}
}
/* 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 ((rdkey = reiserfs_tree_next_key (&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;
}
// get key of an object pointed by direntry and the key of the entry itself
void get_object_key (reiserfs_deh_t * deh, reiserfs_key_t * key,
reiserfs_key_t * entry_key, reiserfs_ih_t * ih)
{
/* entry points to this key */
reiserfs_key_set_did (key, reiserfs_deh_get_did (deh));
reiserfs_key_set_oid (key, reiserfs_deh_get_obid (deh));
reiserfs_key_set_off1 (key, OFFSET_SD);
reiserfs_key_set_uni (key, 0);
/* key of entry */
reiserfs_key_set_did (entry_key, reiserfs_key_get_did (&ih->ih_key));
reiserfs_key_set_oid (entry_key, reiserfs_key_get_oid (&ih->ih_key));
reiserfs_key_set_off1 (entry_key, reiserfs_deh_get_off (deh));
reiserfs_key_set_uni (entry_key, UNI_DE);
}
int fix_obviously_wrong_sd_mode (reiserfs_path_t * path) {
const reiserfs_key_t * next_key;
__u16 mode;
int retval = 0;
next_key = reiserfs_tree_next_key (path, fs);
if (!next_key)
return 0;
if (reiserfs_key_comp2 (next_key, &REISERFS_PATH_IH(path)->ih_key))
return 0;
/* next item exists and of the same file. Fix the SD mode */
if (not_a_directory (REISERFS_PATH_ITEM (path)) &&
reiserfs_key_dir (next_key))
{
/* make SD mode SD of dir */
reiserfs_stat_get_mode (REISERFS_PATH_IH (path),
REISERFS_PATH_ITEM (path), &mode);
fsck_log ("The directory %K had wrong mode %M",
&REISERFS_PATH_IH(path)->ih_key, mode);
if (fsck_mode(fs) != FSCK_CHECK) {
mode &= ~S_IFMT;
mode |= S_IFDIR;
fsck_log (" - corrected to %M\n", mode);
reiserfs_stat_set_mode (REISERFS_PATH_IH (path),
REISERFS_PATH_ITEM (path), &mode);
reiserfs_buffer_mkdirty (REISERFS_PATH_LEAF(path));
} else {
fsck_log ("\n");
retval = 1;
}
} else if (!not_a_directory (REISERFS_PATH_ITEM (path)) &&
!reiserfs_key_dir (next_key))
{
/* make SD mode SD of regular file */
reiserfs_stat_get_mode (REISERFS_PATH_IH (path),
REISERFS_PATH_ITEM (path), &mode);
fsck_log ("The file %K had wrong mode %M",
&REISERFS_PATH_IH(path)->ih_key, mode);
if (fsck_mode(fs) != FSCK_CHECK) {
mode &= ~S_IFMT;
mode |= S_IFREG;
fsck_log (" - corrected to %M\n", mode);
reiserfs_stat_set_mode (REISERFS_PATH_IH (path),
REISERFS_PATH_ITEM (path), &mode);
reiserfs_buffer_mkdirty (REISERFS_PATH_LEAF(path));
} else {
fsck_log ("\n");
retval = 1;
}
}
return retval;
}
static int is_lost_found (char * name, int namelen)
{
return (namelen == 10 && !memcmp(name, "lost+found", 10)) ? 1 : 0;
}
void cb_item_modify (reiserfs_ih_t *ih, void *item) {
zero_nlink (ih, item);
reiserfs_ih_mkunreach (ih);
}
/* check recursively the semantic tree. Returns OK if entry points to good
object, STAT_DATA_NOT_FOUND if stat data was not found or RELOCATED when
file was relocated because its objectid was already marked as used by
another file */
int rebuild_semantic_pass (reiserfs_key_t * key,
const reiserfs_key_t * parent,
int etype, reiserfs_ih_t * new_ih)
{
reiserfs_path_t path;
void * sd;
int is_new_dir;
__u32 nlink;
reiserfs_bh_t * bh;
reiserfs_ih_t * ih;
int retval, retval1;
char * dir_item;
__u32 pos_in_item;
reiserfs_ih_t tmp_ih;
reiserfs_key_t item_key, entry_key, object_key, *found;
__u64 dir_size;
__u32 blocks;
__u64 saved_size;
__u32 saved_blocks;
int fix_sd;
int relocate;
int dir_format = 0;
__u16 mode;
int entry_len;
retval = OK;
start_again: /* when directory was relocated */
if (!reiserfs_key_stat (key))
reiserfs_panic ("rebuild_semantic_pass: The key %k must "
"be key of a StatData", key);
/* look for stat data of an object */
if (reiserfs_tree_search_item (fs, key, &path) == ITEM_NOT_FOUND) {
if (is_rootdir_key (key))
/* root directory has to exist at this point */
reiserfs_panic ("rebuild_semantic_pass: The root directory "
"StatData was not found");
/* If an item of the same object is found, create a stat item. */
found = &REISERFS_PATH_IH(&path)->ih_key;
if (!reiserfs_key_comp2(key, found)) {
if (reiserfs_key_dir (found) || reiserfs_key_get_off (key) == 1) {
sem_pass_stat(fs)->added_sd ++;
reiserfs_tree_create_stat (fs, &path, key, cb_item_modify);
reiserfs_tree_pathrelse (&path);
goto start_again;
}
}
reiserfs_tree_pathrelse (&path);
return STAT_DATA_NOT_FOUND;
}
if ((etype == ET_NAME) && !reiserfs_key_comp2(key, &lost_found_dir_key)) {
/* This is not "lost+found" entry that points to "lost+found" object. */
reiserfs_tree_pathrelse (&path);
return DIRECTORY_HAS_NO_ITEMS;
}
/* stat data has been found */
bh = REISERFS_PATH_LEAF (&path);
ih = REISERFS_PATH_IH (&path);
sd = REISERFS_PATH_ITEM(&path);
/* */
reiserfs_stat_get_nlink (ih, sd, &nlink);
relocate = 0;
if (!nlink) {
/* we reached the stat data for the first time */
if (id_map_mark(semantic_id_map(fs), reiserfs_key_get_oid (&ih->ih_key))) {
/* calculate number of found files/dirs who are using objectid
which is used by another file */
sem_pass_stat (fs)->oid_sharing ++;
relocate = 1;
}
fsck_item_mkreach (ih, bh);
}
fix_obviously_wrong_sd_mode (&path);
if (not_a_directory (sd)) {
retval = rebuild_check_regular_file (&path, sd, relocate ? new_ih : 0);
reiserfs_tree_pathrelse (&path);
return retval;
}
if (relocate) {
if (!new_ih)
reiserfs_panic ("rebuild_semantic_pass: Memory is not "
"prepared for relocation of %K", &ih->ih_key);
*new_ih = *ih;
reiserfs_tree_pathrelse (&path);
sem_pass_stat (fs)->oid_sharing_dirs_relocated ++;
relocate_dir (new_ih);
fsck_relocate_mklinked(&new_ih->ih_key);
*key = new_ih->ih_key;
retval = RELOCATED;
goto start_again;
}
/* it looks like stat data of a directory found */
if (nlink) {
/* we saw this directory already */
if (etype != ET_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 (bh);
reiserfs_tree_pathrelse (&path);
return OK;
}
}
/* we see the directory first time */
sem_pass_stat (fs)->directories ++;
nlink = 2;
if (reiserfs_key_get_oid (key) == REISERFS_ROOT_OBJECTID)
nlink ++;
reiserfs_stat_set_nlink (ih, sd, &nlink);
reiserfs_buffer_mkdirty (bh);
if (reiserfs_ih_get_len (ih) == REISERFS_SD_SIZE)
is_new_dir = 1;
else
is_new_dir = 0;
/*
{
reiserfs_key_t * tmp;
// check next item: if it is not a directory item of the same file
// therefore sd_mode is corrupted so we just reset it to regular file
// mode
tmp = reiserfs_tree_next_key (&path);
if (tmp && !reiserfs_key_comp2 (tmp, key) && !reiserfs_key_dir (tmp)) {
__u16 mode;
reiserfs_stat_get_mode (ih, sd, &mode);
fsck_log ("file %K had broken mode %M, ", key, mode);
mode &= ~S_IFMT;
mode |= S_IFREG;
fsck_log ("fixed to %M\n", mode);
reiserfs_stat_set_mode (ih, sd, &mode);
nlink = 0;
reiserfs_stat_set_nlink (ih, sd, &nlink);
retval = rebuild_check_regular_file (&path, sd, 0); //no relocate
reiserfs_tree_pathrelse (&path);
return retval;
}
}
*/
dir_format = (reiserfs_ih_get_len (REISERFS_PATH_IH (&path)) == REISERFS_SD_SIZE) ?
KEY_FORMAT_2 : KEY_FORMAT_1;
/* save stat data's size and st_blocks */
reiserfs_stat_get_size (ih, sd, &saved_size);
reiserfs_stat_get_blocks (ih, sd, &saved_blocks);
reiserfs_stat_get_mode (ih, sd, &mode);
/* release path pointing to stat data */
reiserfs_tree_pathrelse (&path);
/* make sure that "." and ".." exist */
entry_len = reiserfs_direntry_entry_estimate (".", dir_format);
reiserfs_tree_insert_entry (fs, key, ".", entry_len, key,
1 << IH_Unreachable);
entry_len = reiserfs_direntry_entry_estimate ("..", dir_format);
reiserfs_tree_insert_entry (fs, key, "..", entry_len,
parent, 1 << IH_Unreachable);
reiserfs_key_set_did (&item_key, reiserfs_key_get_did (key));
reiserfs_key_set_oid (&item_key, reiserfs_key_get_oid (key));
reiserfs_key_set_off1 (&item_key, OFFSET_DOT);
reiserfs_key_set_uni (&item_key, UNI_DE);
dir_size = 0;
while ((dir_item = get_next_directory_item (&item_key, parent,
&tmp_ih, &pos_in_item)) != 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;
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 */
fsck_log ("Entry %K (\"%.*s\") in the directory %K is not "
"formated properly - fixed.\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);
}
/*
if ((dir_format == KEY_FORMAT_1) && (namelen != entry_len)) {
// aligned entry in directory of old format - remove and
// insert it back
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);
}
*/
if (is_dot (name, namelen)) {
dir_size += REISERFS_DEH_SIZE + entry_len;
continue;
}
if (!fsck_quiet(fs)) {
util_misc_print_name (fsck_progress_file(fs),
name, namelen);
}
if (!reiserfs_hash_correct (&fs->hash, name, namelen,
reiserfs_deh_get_off (deh)))
{
reiserfs_panic ("rebuild_semantic_pass: Hash mismatch "
"detected for (\"%.*s\") in directory %K\n",
namelen, name, &tmp_ih.ih_key);
}
retval1 = rebuild_semantic_pass (&object_key, key,
is_dot_dot (name, namelen) ? ET_DOT_DOT :
reiserfs_key_get_oid (key) == REISERFS_ROOT_OBJECTID &&
is_lost_found (name, namelen) ? ET_LOST_FOUND : 0,
&relocated_ih);
if (!fsck_quiet(fs)) {
util_misc_erase_name (fsck_progress_file(fs),
namelen);
}
switch (retval1) {
case OK:
dir_size += REISERFS_DEH_SIZE + entry_len;
break;
case STAT_DATA_NOT_FOUND:
case DIRECTORY_HAS_NO_ITEMS:
if (reiserfs_key_get_off (&entry_key) == OFFSET_DOT_DOT &&
reiserfs_key_get_oid (&object_key) ==
REISERFS_ROOT_PARENT_OBJECTID)
{
/* ".." of root directory can not be found */
dir_size += REISERFS_DEH_SIZE + entry_len;
continue;
}
fsck_log ("%s: The entry %K (\"%.*s\") in directory %K "
"points to nowhere - is removed\n", __FUNCTION__,
&object_key, namelen, name, &tmp_ih.ih_key);
reiserfs_tree_delete_entry (fs, &entry_key);
sem_pass_stat (fs)->deleted_entries ++;
break;
case RELOCATED:
/* file was relocated, update key in directory entry */
if (reiserfs_tree_search_entry (fs, &entry_key, &path) !=
POSITION_FOUND)
{
fsck_log ("WARNING: Cannot find the name of the relocated "
"file %K in the directory %K\n", &object_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 entry %K (\"%.*s\") in directory %K "
"updated to point to ", &object_key, namelen,
name, &tmp_ih.ih_key);
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\n", &tmp_deh->deh2_dir_id);
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 (&item_key, key) || !reiserfs_key_dir(&item_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, saved_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, saved_size, TYPE_DIRENTRY);
if (fix_sd) {
/* we have to fix either sd_size or sd_blocks, so look for SD again */
if (reiserfs_tree_search_item (fs, key, &path) != ITEM_FOUND)
reiserfs_panic ("rebuild_semantic_pass: The StatData of the "
"file %K was not found", key);
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);
}
return retval;
}
int is_dot (char * name, int namelen)
{
return (namelen == 1 && name[0] == '.') ? 1 : 0;
}
int is_dot_dot (char * name, int namelen)
{
return (namelen == 2 && name[0] == '.' && name[1] == '.') ? 1 : 0;
}
int not_a_directory (void * sd)
{
/* mode is at the same place and of the same size in both stat
datas (v1 and v2) */
reiserfs_sd_v1_t * sd_v1 = sd;
return !(S_ISDIR (le16_to_cpu (sd_v1->sd_mode)));
}
int not_a_regfile (void * sd)
{
/* mode is at the same place and of the same size in both stat
datas (v1 and v2) */
reiserfs_sd_v1_t * sd_v1 = sd;
return !(S_ISREG (le16_to_cpu (sd_v1->sd_mode)));
}
void zero_nlink (reiserfs_ih_t * ih, void * sd)
{
int zero = 0;
if (reiserfs_ih_get_len (ih) == REISERFS_SD_SIZE_V1 && reiserfs_ih_get_format (ih) !=
KEY_FORMAT_1)
{
fsck_log ("zero_nlink: The StatData %k of the wrong format version "
"(%d) - corrected to (%d)\n", ih, reiserfs_ih_get_format (ih),
KEY_FORMAT_1);
reiserfs_ih_set_format (ih, KEY_FORMAT_1);
}
if (reiserfs_ih_get_len (ih) == REISERFS_SD_SIZE && reiserfs_ih_get_format (ih) !=
KEY_FORMAT_2)
{
fsck_log ("zero_nlink: The StatData %k of the wrong format version "
"(%d) - corrected to (%d)\n", ih, reiserfs_ih_get_format (ih),
KEY_FORMAT_2);
reiserfs_ih_set_format (ih, KEY_FORMAT_2);
}
reiserfs_stat_set_nlink (ih, sd, &zero);
}
/* mkreiserfs should have created this */
static void make_sure_lost_found_exists (reiserfs_filsys_t * fs,
__u16 root_format)
{
int retval;
REISERFS_PATH_INIT (path);
unsigned int gen_counter;
__u32 objectid;
__u64 sd_size;
__u32 sd_blocks;
reiserfs_bh_t * bh;
reiserfs_ih_t * ih;
void * sd;
int item_len;
int entry_len;
/* look for "lost+found" in the root directory */
retval = reiserfs_tree_search_name (fs, &root_dir_key,
"lost+found", &gen_counter,
&lost_found_dir_key);
if (!retval) {
objectid = id_map_alloc(proper_id_map(fs));
if (!objectid) {
fsck_progress ("Could not allocate an objectid for '/lost+found'",
"lost files will not be linked\n");
return;
}
reiserfs_key_set_did (&lost_found_dir_key, REISERFS_ROOT_OBJECTID);
reiserfs_key_set_oid (&lost_found_dir_key, objectid);
}
/* look for stat data of "lost+found" */
retval = reiserfs_tree_search_item (fs, &lost_found_dir_key, &path);
if (retval == ITEM_NOT_FOUND) {
fs->lost_format = reiserfs_tree_create_stat
(fs, &path, &lost_found_dir_key, cb_item_modify);
} else {
reiserfs_ih_t * ih = REISERFS_PATH_IH (&path);
if (!reiserfs_ih_stat (ih))
reiserfs_panic ("It must be lost+found's stat data %k\n",
&ih->ih_key);
fix_obviously_wrong_sd_mode (&path);
if (not_a_directory (REISERFS_PATH_ITEM (&path))) {
fsck_progress ("\"/lost+found\" exists, but it is not a "
"directory, lost files will not be linked\n");
reiserfs_key_set_oid (&lost_found_dir_key, 0);
reiserfs_tree_pathrelse (&path);
return;
}
fs->lost_format = (reiserfs_ih_get_len (REISERFS_PATH_IH (&path)) ==
REISERFS_SD_SIZE) ? KEY_FORMAT_2 : KEY_FORMAT_1;
reiserfs_tree_pathrelse (&path);
}
/* add "." and ".." if any of them do not exist */
entry_len = reiserfs_direntry_entry_estimate (".", fs->lost_format);
reiserfs_tree_insert_entry (fs, &lost_found_dir_key, ".", entry_len,
&lost_found_dir_key, 1 << IH_Unreachable);
entry_len = reiserfs_direntry_entry_estimate ("..", fs->lost_format);
reiserfs_tree_insert_entry (fs, &lost_found_dir_key, "..", entry_len,
&root_dir_key, 1 << IH_Unreachable);
entry_len = reiserfs_direntry_entry_estimate ("lost+found", root_format);
item_len = reiserfs_tree_insert_entry (fs, &root_dir_key, "lost+found",
entry_len, &lost_found_dir_key,
1 << IH_Unreachable);
if (item_len) {
if (reiserfs_tree_search_item (fs, &root_dir_key, &path) ==
ITEM_NOT_FOUND)
{
reiserfs_panic ("%s: StatData of the root directory must exists",
__FUNCTION__);
}
bh = REISERFS_PATH_LEAF (&path);
ih = REISERFS_PATH_IH (&path);
sd = REISERFS_PATH_ITEM(&path);
reiserfs_stat_get_size (ih, sd, &sd_size);
sd_size += item_len;
reiserfs_stat_set_size (ih, sd, &sd_size);
sd_blocks = REISERFS_DIR_BLOCKS (sd_size);
reiserfs_stat_set_blocks (ih, sd, &sd_blocks);
reiserfs_buffer_mkdirty (bh);
reiserfs_tree_pathrelse (&path);
}
return;
}
/* Result of the rebuild pass will be saved in the state file
which is needed to start fsck again from the next pass. */
static void fsck_semantic_save_result (reiserfs_filsys_t * fs) {
FILE * file;
int retval;
file = util_file_open ("temp_fsck_file.deleteme", "w+");
if (!file)
return;
fsck_stage_start_put (file, SEMANTIC_DONE);
reiserfs_objectid_map_save (file, semantic_id_map (fs));
fsck_stage_end_put (file);
fclose (file);
retval = rename ("temp_fsck_file.deleteme", state_dump_file (fs));
if (retval != 0) {
fsck_progress ("%s: Could not rename the temporary file "
"temp_fsck_file.deleteme to %s",
__FUNCTION__, state_dump_file (fs));
}
}
/* we have nothing to load from a state file, but we have to fetch
on-disk bitmap, copy it to allocable bitmap, and fetch objectid
map */
void fsck_semantic_load_result (FILE * file, reiserfs_filsys_t * fs) {
unsigned int gen_counter;
REISERFS_PATH_INIT(path);
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;
/* we need objectid map on semantic pass to be able to relocate files */
proper_id_map (fs) = id_map_init();
fetch_objectid_map (proper_id_map (fs), fs);
semantic_id_map (fs) = reiserfs_objectid_map_load (file);
/* get the lost_found key. */
if (!(reiserfs_tree_search_name (fs, &root_dir_key,
"lost+found", &gen_counter,
&lost_found_dir_key)))
{
reiserfs_panic("Lost&found entry cannot be found in the root dir.");
}
if (reiserfs_tree_search_item (fs, &lost_found_dir_key,
&path) == ITEM_NOT_FOUND)
{
reiserfs_panic("Lost&found StatData item cannot be found.");
}
fs->lost_format = (reiserfs_ih_get_len (REISERFS_PATH_IH (&path)) ==
REISERFS_SD_SIZE) ? KEY_FORMAT_2 : KEY_FORMAT_1;
reiserfs_tree_pathrelse (&path);
}
static void before_pass_3 (reiserfs_filsys_t * fs) {
semantic_id_map (fs) = id_map_init();
}
static void after_pass_3 (reiserfs_filsys_t * fs) {
/* update super block: objectid map, fsck state */
reiserfs_sb_set_state (fs->fs_ondisk_sb, SEMANTIC_DONE);
reiserfs_buffer_mkdirty (fs->fs_super_bh);
/* write all dirty blocks */
fsck_progress ("Flushing..");
id_map_flush(proper_id_map (fs), fs);
fs->fs_dirt = 1;
reiserfs_bitmap_flush (fsck_new_bitmap(fs), fs);
reiserfs_fs_flush (fs);
fsck_progress ("finished\n");
fsck_stage_report (FS_SEMANTIC, fs);
if (!fsck_run_one_step (fs)) {
if (fsck_info_ask (fs, "Continue? (Yes):", "Yes\n", 1))
/* reiserfsck continues */
return;
}
fsck_semantic_save_result (fs);
id_map_free(proper_id_map (fs));
proper_id_map (fs) = 0;
fs->fs_dirt = 1;
reiserfs_fs_close (fs);
exit(0);
}
/* this is part of rebuild tree */
void fsck_semantic (reiserfs_filsys_t * fs) {
__u16 root_format;
before_pass_3 (fs);
fsck_progress ("Pass 3 (semantic):\n");
/* when warnings go not to stderr - separate them in the log */
if (fsck_log_file (fs) != stderr)
fsck_log ("####### Pass 3 #########\n");
if (!fs->hash)
reiserfs_panic ("Hash function should be selected already");
root_format = reiserfs_tree_root (fs, cb_item_modify, 1 << IH_Unreachable);
make_sure_lost_found_exists (fs, root_format);
id_map_mark(proper_id_map(fs), reiserfs_key_get_oid(&root_dir_key));
id_map_mark(proper_id_map(fs), reiserfs_key_get_oid(&lost_found_dir_key));
/* link all relocated files into /lost+found directory */
fsck_relocate_link_all();
rebuild_semantic_pass ((reiserfs_key_t *)&root_dir_key,
&parent_root_dir_key, ET_NAME, 0/*reloc_ih*/);
if (!fsck_quiet(fs))
util_misc_fini_name(fsck_progress_file(fs));
reiserfs_badblock_flush(fs, 1);
after_pass_3 (fs);
}
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