fs/ext4/ext4_common.c

445 static int check_void_in_dentry(struct ext2_dirent *dir, char *filename)
452 	if (dir->namelen % 4 != 0)
453 		padding_factor = 4 - (dir->namelen % 4);
456 			dir->namelen + padding_factor;
457 	sizeof_void_space = le16_to_cpu(dir->direntlen) - dentry_length;
468 		dir->direntlen = cpu_to_le16(dentry_length);
489 	struct ext2_dirent *dir;
529 	dir = (struct ext2_dirent *)root_first_block_buffer;
532 	while (le16_to_cpu(dir->direntlen) > 0) {
533 		unsigned short used_len = ROUND(dir->namelen +
537 		if (fs->blksz - totalbytes == le16_to_cpu(dir->direntlen)) {
541 			    le16_to_cpu(dir->direntlen)) {
542 				dir->direntlen = cpu_to_le16(used_len);
587 		templength = le16_to_cpu(dir->direntlen);
589 		sizeof_void_space = check_void_in_dentry(dir, filename);
593 		dir = (struct ext2_dirent *)((char *)dir + templength);
597 	templength = le16_to_cpu(dir->direntlen);
599 	dir = (struct ext2_dirent *)((char *)dir + templength);
607 	dir->inode = cpu_to_le32(inodeno);
609 		dir->direntlen = cpu_to_le16(sizeof_void_space);
611 		dir->direntlen = cpu_to_le16(fs->blksz - totalbytes);
613 	dir->namelen = strlen(filename);
614 	dir->filetype = file_type;
615 	temp_dir = (char *)dir;
639 	struct ext2_dirent *dir = NULL;
670 			dir = (struct ext2_dirent *)(block_buffer + offset);
671 			direntname = (char*)(dir) + sizeof(struct ext2_dirent);
673 			int direntlen = le16_to_cpu(dir->direntlen);
677 			if (dir->inode && (strlen(dirname) == dir->namelen) &&
678 			    (strncmp(dirname, direntname, dir->namelen) == 0)) {
679 				inodeno = le32_to_cpu(dir->inode);
872 	struct ext2_dirent *dir = NULL;
895 		previous_dir = dir;
896 		dir = (struct ext2_dirent *)(block_buffer + offset);
897 		direntname = (char *)(dir) + sizeof(struct ext2_dirent);
899 		int direntlen = le16_to_cpu(dir->direntlen);
903 		if (dir->inode && (strlen(filename) == dir->namelen) &&
904 		    (strncmp(direntname, filename, dir->namelen) == 0)) {
905 			inodeno = le32_to_cpu(dir->inode);
919 			/* merge dir entry with predecessor */
922 			new_len += le16_to_cpu(dir->direntlen);
925 			/* invalidate dir entry */
926 			dir->inode = 0;
2045 int ext4fs_iterate_dir(struct ext2fs_node *dir, char *name,
2051 	struct ext2fs_node *diro = (struct ext2fs_node *) dir;
2055 		printf("Iterate dir %s\n", name);