Beispiel #1
0
/* fills the structure with various parameters of directory entry,
   including key of the pointed object */
static void get_entry_attributes (struct reiserfs_dir_entry * de, int entry_num)
{
#ifdef REISERFS_CHECK
  if (I_ENTRY_COUNT (de->de_ih) < entry_num)
    reiserfs_panic (0, "yr-7006: get_entry_attributes: no such entry (%d-th) in the item (%d)",
		    entry_num, I_ENTRY_COUNT (de->de_ih));
  if (de->de_deh != B_I_DEH (de->de_bh, de->de_ih) + entry_num)
    reiserfs_panic (0, "yr-7008: get_entry_attributes: dir entry header not found");
    
#endif /* REISERFS_CHECK */

  /* few fields are set already (de_bh, de_item_num, de_deh) */
  de->de_entrylen = I_DEH_N_ENTRY_LENGTH (de->de_ih, de->de_deh, entry_num);
  de->de_namelen = de->de_entrylen - (de_with_sd (de->de_deh) ? SD_SIZE : 0);

  de->de_name = B_I_PITEM (de->de_bh, de->de_ih) + de->de_deh->deh_location;

#ifdef REISERFS_ALIGNED
  if ( de->de_name[ de->de_namelen-1 ] == '\0' )
      de->de_namelen = strlen(de->de_name);
#endif

  /* key of object pointed by entry */
  de->de_dir_id = de->de_deh->deh_dir_id;
  de->de_objectid = de->de_deh->deh_objectid;

  /* key of the entry */
  memcpy (&(de->de_entry_key.k_dir_id), &(de->de_ih->ih_key), SHORT_KEY_SIZE);
  de->de_entry_key.k_offset = de->de_deh->deh_offset;
  de->de_entry_key.k_uniqueness = DIRENTRY_UNIQUENESS;

}
// de_bh, de_ih, de_deh (points to first element of array), de_item_num is set
inline void set_de_name_and_namelen(struct reiserfs_dir_entry *de)
{
	struct reiserfs_de_head *deh = de->de_deh + de->de_entry_num;

	BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));

	de->de_entrylen = entry_length(de->de_bh, de->de_ih, de->de_entry_num);
	de->de_namelen = de->de_entrylen - (de_with_sd(deh) ? SD_SIZE : 0);
	de->de_name = B_I_PITEM(de->de_bh, de->de_ih) + deh_location(deh);
	if (de->de_name[de->de_namelen - 1] == 0)
		de->de_namelen = strlen(de->de_name);
}
/*
 * de_bh, de_ih, de_deh (points to first element of array), de_item_num
 * is set
 */
void
set_de_name_and_namelen(struct reiserfs_dir_entry *de)
{
	struct reiserfs_de_head *deh = de->de_deh + de->de_entry_num;

	if (de->de_entry_num >= ih_entry_count(de->de_ih)) {
		reiserfs_log(LOG_DEBUG, "BUG\n");
		return;
	}

	de->de_entrylen = entry_length(de->de_bp, de->de_ih, de->de_entry_num);
	de->de_namelen  = de->de_entrylen - (de_with_sd(deh) ? SD_SIZE : 0);
	de->de_name     = B_I_PITEM(de->de_bp, de->de_ih) + deh_location(deh);
	if (de->de_name[de->de_namelen - 1] == 0)
		de->de_namelen = strlen(de->de_name);
}