#ifndef EXT4_DIR_H_
#define EXT4_DIR_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
+
#include "ext4_config.h"
#include "ext4_types.h"
#include "ext4_blockdev.h"
* @return I-node number
*/
static inline uint32_t
-ext4_dir_entry_ll_get_inode(struct ext4_directory_entry_ll *de)
+ext4_dir_en_get_inode(struct ext4_dir_en *de)
{
return to_le32(de->inode);
}
* @param inode I-node number
*/
static inline void
-ext4_dir_entry_ll_set_inode(struct ext4_directory_entry_ll *de, uint32_t inode)
+ext4_dir_en_set_inode(struct ext4_dir_en *de, uint32_t inode)
{
de->inode = to_le32(inode);
}
* @param inode I-node number
*/
static inline void
-ext4_dx_dot_entry_set_inode(struct ext4_directory_dx_dot_entry *de, uint32_t inode)
+ext4_dx_dot_en_set_inode(struct ext4_dir_idx_dot_en *de, uint32_t inode)
{
de->inode = to_le32(inode);
}
* @param de Directory entry
* @return Entry length
*/
-static inline uint16_t
-ext4_dir_entry_ll_get_entry_length(struct ext4_directory_entry_ll *de)
+static inline uint16_t ext4_dir_en_get_entry_len(struct ext4_dir_en *de)
{
- return to_le16(de->entry_length);
+ return to_le16(de->entry_len);
}
/**@brief Set directory entry length.
* @param de Directory entry
* @param length Entry length
*/
-static inline void
-ext4_dir_entry_ll_set_entry_length(struct ext4_directory_entry_ll *de,
- uint16_t len)
+static inline void ext4_dir_en_set_entry_len(struct ext4_dir_en *de, uint16_t l)
{
- de->entry_length = to_le16(len);
+ de->entry_len = to_le16(l);
}
/**@brief Get directory entry name length.
* @param de Directory entry
* @return Entry name length
*/
-static inline uint16_t
-ext4_dir_entry_ll_get_name_length(struct ext4_sblock *sb,
- struct ext4_directory_entry_ll *de)
+static inline uint16_t ext4_dir_en_get_name_len(struct ext4_sblock *sb,
+ struct ext4_dir_en *de)
{
- uint16_t v = de->name_length;
+ uint16_t v = de->name_len;
if ((ext4_get32(sb, rev_level) == 0) &&
(ext4_get32(sb, minor_rev_level) < 5))
* @param de Directory entry
* @param length Entry name length
*/
-static inline void ext4_dir_entry_ll_set_name_length(
- struct ext4_sblock *sb, struct ext4_directory_entry_ll *de, uint16_t len)
+static inline void ext4_dir_en_set_name_len(struct ext4_sblock *sb,
+ struct ext4_dir_en *de,
+ uint16_t len)
{
- de->name_length = (len << 8) >> 8;
+ de->name_len = (len << 8) >> 8;
if ((ext4_get32(sb, rev_level) == 0) &&
(ext4_get32(sb, minor_rev_level) < 5))
* @param de Directory entry
* @return I-node type (file, dir, etc.)
*/
-static inline uint8_t
-ext4_dir_entry_ll_get_inode_type(struct ext4_sblock *sb,
- struct ext4_directory_entry_ll *de)
+static inline uint8_t ext4_dir_en_get_inode_type(struct ext4_sblock *sb,
+ struct ext4_dir_en *de)
{
if ((ext4_get32(sb, rev_level) > 0) ||
(ext4_get32(sb, minor_rev_level) >= 5))
return de->in.inode_type;
- return EXT4_DIRECTORY_FILETYPE_UNKNOWN;
+ return EXT4_DE_UNKNOWN;
}
/**@brief Set i-node type of directory entry.
* @param sb Superblock
* @param type I-node type (file, dir, etc.)
*/
-static inline void ext4_dir_entry_ll_set_inode_type(
- struct ext4_sblock *sb, struct ext4_directory_entry_ll *de, uint8_t type)
+static inline void ext4_dir_en_set_inode_type(struct ext4_sblock *sb,
+ struct ext4_dir_en *de, uint8_t t)
{
if ((ext4_get32(sb, rev_level) > 0) ||
(ext4_get32(sb, minor_rev_level) >= 5))
- de->in.inode_type = type;
+ de->in.inode_type = t;
}
+/**@brief Verify checksum of a linear directory leaf block
+ * @param inode_ref Directory i-node
+ * @param dirent Linear directory leaf block
+ * @return true means the block passed checksum verification
+ */
+bool ext4_dir_csum_verify(struct ext4_inode_ref *inode_ref,
+ struct ext4_dir_en *dirent);
+
/**@brief Initialize directory iterator.
* Set position to the first valid entry from the required position.
* @param it Pointer to iterator to be initialized
* @param pos Position to start reading entries from
* @return Error code
*/
-int ext4_dir_iterator_init(struct ext4_directory_iterator *it,
+int ext4_dir_iterator_init(struct ext4_dir_iter *it,
struct ext4_inode_ref *inode_ref, uint64_t pos);
/**@brief Jump to the next valid entry
* @param it Initialized iterator
* @return Error code
*/
-int ext4_dir_iterator_next(struct ext4_directory_iterator *it);
+int ext4_dir_iterator_next(struct ext4_dir_iter *it);
/**@brief Uninitialize directory iterator.
* Release all allocated structures.
* @param it Iterator to be finished
* @return Error code
*/
-int ext4_dir_iterator_fini(struct ext4_directory_iterator *it);
+int ext4_dir_iterator_fini(struct ext4_dir_iter *it);
/**@brief Write directory entry to concrete data block.
* @param sb Superblock
- * @param entry Pointer to entry to be written
+ * @param en Pointer to entry to be written
* @param entry_len Length of new entry
* @param child Child i-node to be written to new entry
* @param name Name of the new entry
* @param name_len Length of entry name
*/
-void ext4_dir_write_entry(struct ext4_sblock *sb,
- struct ext4_directory_entry_ll *entry,
+void ext4_dir_write_entry(struct ext4_sblock *sb, struct ext4_dir_en *en,
uint16_t entry_len, struct ext4_inode_ref *child,
const char *name, size_t name_len);
* @param name_len Name length
* @return Error code
*/
-int ext4_dir_find_entry(struct ext4_directory_search_result *result,
+int ext4_dir_find_entry(struct ext4_dir_search_result *result,
struct ext4_inode_ref *parent, const char *name,
uint32_t name_len);
/**@brief Try to insert entry to concrete data block.
* @param sb Superblock
- * @param target_block Block to try to insert entry to
+ * @param inode_ref Directory i-node
+ * @param dst_blk Block to try to insert entry to
* @param child Child i-node to be inserted by new entry
* @param name Name of the new entry
* @param name_len Length of the new entry name
* @return Error code
*/
int ext4_dir_try_insert_entry(struct ext4_sblock *sb,
- struct ext4_block *target_block,
+ struct ext4_inode_ref *inode_ref,
+ struct ext4_block *dst_blk,
struct ext4_inode_ref *child, const char *name,
uint32_t name_len);
*/
int ext4_dir_find_in_block(struct ext4_block *block, struct ext4_sblock *sb,
size_t name_len, const char *name,
- struct ext4_directory_entry_ll **res_entry);
+ struct ext4_dir_en **res_entry);
/**@brief Simple function to release allocated data from result.
* @param parent Parent inode
*
*/
int ext4_dir_destroy_result(struct ext4_inode_ref *parent,
- struct ext4_directory_search_result *result);
+ struct ext4_dir_search_result *result);
+
+void ext4_dir_set_csum(struct ext4_inode_ref *inode_ref,
+ struct ext4_dir_en *dirent);
+
+
+void ext4_dir_init_entry_tail(struct ext4_dir_entry_tail *t);
+
+#ifdef __cplusplus
+}
+#endif
#endif /* EXT4_DIR_H_ */
projects / lwext4.git / blobdiff