/* The function is NOT SCHEDULE-SAFE! */
int search_by_entry_key(struct super_block *sb, const struct cpu_key *key,
struct treepath *path, struct reiserfs_dir_entry *de)
{
int retval;
retval = search_item(sb, key, path);
switch (retval) {
case ITEM_NOT_FOUND:
if (!PATH_LAST_POSITION(path)) {
reiserfs_error(sb, "vs-7000", "search_by_key "
"returned item position == 0");
pathrelse(path);
return IO_ERROR;
}
PATH_LAST_POSITION(path)--;
case ITEM_FOUND:
break;
case IO_ERROR:
return retval;
default:
pathrelse(path);
reiserfs_error(sb, "vs-7002", "no path to here");
return IO_ERROR;
}
set_de_item_location(de, path);
#ifdef CONFIG_REISERFS_CHECK
if (!is_direntry_le_ih(de->de_ih) ||
COMP_SHORT_KEYS(&de->de_ih->ih_key, key)) {
print_block(de->de_bh, 0, -1, -1);
reiserfs_panic(sb, "vs-7005", "found item %h is not directory "
"item or does not belong to the same directory "
"as key %K", de->de_ih, key);
}
#endif /* CONFIG_REISERFS_CHECK */
/*
* binary search in directory item by third component of the
* key. sets de->de_entry_num of de
*/
retval = bin_search_in_dir_item(de, cpu_key_k_offset(key));
path->pos_in_item = de->de_entry_num;
if (retval != NAME_NOT_FOUND) {
/*
* ugly, but rename needs de_bh, de_deh, de_name,
* de_namelen, de_objectid set
*/
set_de_name_and_namelen(de);
set_de_object_key(de);
}
return retval;
}
/*
* We assign a key to each directory item, and place multiple entries in
* a single directory item. A directory item has a key equal to the key
* of the first directory entry in it.
*
* This function first calls search_by_key, then, if item whose first
* entry matches is not found it looks for the entry inside directory
* item found by search_by_key. Fills the path to the entry, and to the
* entry position in the item
*/
int
search_by_entry_key(struct reiserfs_sb_info *sbi,
const struct cpu_key *key, struct path *path,
struct reiserfs_dir_entry *de)
{
int retval;
reiserfs_log(LOG_DEBUG, "searching in (objectid=%d,dirid=%d)\n",
key->on_disk_key.k_objectid, key->on_disk_key.k_dir_id);
retval = search_item(sbi, key, path);
switch (retval) {
case ITEM_NOT_FOUND:
if (!PATH_LAST_POSITION(path)) {
reiserfs_log(LOG_DEBUG,
"search_by_key returned item position == 0");
pathrelse(path);
return (IO_ERROR);
}
PATH_LAST_POSITION(path)--;
reiserfs_log(LOG_DEBUG, "search_by_key did not found it\n");
break;
case ITEM_FOUND:
reiserfs_log(LOG_DEBUG, "search_by_key found it\n");
break;
case IO_ERROR:
return (retval);
default:
pathrelse(path);
reiserfs_log(LOG_DEBUG, "no path to here");
return (IO_ERROR);
}
reiserfs_log(LOG_DEBUG, "set item location\n");
set_de_item_location(de, path);
/*
* Binary search in directory item by third component of the
* key. Sets de->de_entry_num of de
*/
reiserfs_log(LOG_DEBUG, "bin_search_in_dir_item\n");
retval = bin_search_in_dir_item(de, cpu_key_k_offset(key));
path->pos_in_item = de->de_entry_num;
if (retval != NAME_NOT_FOUND) {
/*
* Ugly, but rename needs de_bp, de_deh, de_name, de_namelen,
* de_objectid set
*/
set_de_name_and_namelen(de);
set_de_object_key(de);
reiserfs_log(LOG_DEBUG, "set (objectid=%d,dirid=%d)\n",
de->de_objectid, de->de_dir_id);
}
return (retval);
}
