shithub: lwext4

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ext4_dir: fix non existing entry creation issue

Added the length of the name string a a parameter.
Using strlen() on the name string may not give the correct length
in case of paths like: /mountpoint/nonexistdir1/nonexistdir2.

--- a/include/ext4_dir_idx.h

+++ b/include/ext4_dir_idx.h

@@ -91,7 +91,7 @@

  * @return Error code

  */

 int ext4_dir_dx_add_entry(struct ext4_inode_ref *parent,

-			  struct ext4_inode_ref *child, const char *name);

+			  struct ext4_inode_ref *child, const char *name, uint32_t name_len);

 /**@brief Add new entry to indexed directory

  * @param dir           Directory i-node

--- a/src/ext4_dir.c

+++ b/src/ext4_dir.c

@@ -351,7 +351,7 @@

 	/* Index adding (if allowed) */

 	if ((ext4_sb_feature_com(sb, EXT4_FCOM_DIR_INDEX)) &&

 	    (ext4_inode_has_flag(parent->inode, EXT4_INODE_FLAG_INDEX))) {

-		r = ext4_dir_dx_add_entry(parent, child, name);

+		r = ext4_dir_dx_add_entry(parent, child, name, name_len);

 		/* Check if index is not corrupted */

 		if (r != EXT4_ERR_BAD_DX_DIR) {

--- a/src/ext4_dir_idx.c

+++ b/src/ext4_dir_idx.c

@@ -1230,7 +1230,7 @@

 }

 int ext4_dir_dx_add_entry(struct ext4_inode_ref *parent,

-			  struct ext4_inode_ref *child, const char *name)

+			  struct ext4_inode_ref *child, const char *name, uint32_t name_len)

 {

 	int rc2 = EOK;

 	int r;

@@ -1257,7 +1257,6 @@

 	}

 	/* Initialize hinfo structure (mainly compute hash) */

-	uint32_t name_len = strlen(name);

 	struct ext4_hash_info hinfo;

 	r = ext4_dir_hinfo_init(&hinfo, &root_blk, &fs->sb, name_len, name);

 	if (r != EOK) {