fs/ext2/dir.c

215  * len <= EXT2_NAME_LEN and de != NULL are guaranteed by caller.
218 					struct ext2_dir_entry_2 * de)
220 	if (len != de->name_len)
222 	if (!de->inode)
224 	return !memcmp(name, de->name, len);
239 	ext2_dirent *de = (ext2_dirent*)(base + offset);
241 	while ((char*)p < (char*)de) {
249 static inline void ext2_set_de_type(ext2_dirent *de, struct inode *inode)
252 		de->file_type = fs_umode_to_ftype(inode->i_mode);
254 		de->file_type = 0;
277 		ext2_dirent *de;
297 		de = (ext2_dirent *)(kaddr+offset);
299 		for ( ;(char*)de <= limit; de = ext2_next_entry(de)) {
300 			if (de->rec_len == 0) {
303 				folio_release_kmap(folio, de);
306 			if (de->inode) {
310 					d_type = fs_ftype_to_dtype(de->file_type);
312 				if (!dir_emit(ctx, de->name, de->name_len,
313 						le32_to_cpu(de->inode),
315 					folio_release_kmap(folio, de);
319 			ctx->pos += ext2_rec_len_from_disk(de->rec_len);
352 	ext2_dirent * de;
366 		de = (ext2_dirent *) kaddr;
368 		while ((char *) de <= kaddr) {
369 			if (de->rec_len == 0) {
372 				folio_release_kmap(*foliop, de);
375 			if (ext2_match(namelen, name, de))
377 			de = ext2_next_entry(de);
397 	return de;
415 	ext2_dirent *de = ext2_get_folio(dir, 0, 0, foliop);
417 	if (!IS_ERR(de))
418 		return ext2_next_entry(de);
424 	struct ext2_dir_entry_2 *de;
427 	de = ext2_find_entry(dir, child, &folio);
428 	if (IS_ERR(de))
429 		return PTR_ERR(de);
431 	*ino = le32_to_cpu(de->inode);
432 	folio_release_kmap(folio, de);
451 int ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
454 	loff_t pos = folio_pos(folio) + offset_in_folio(folio, de);
455 	unsigned len = ext2_rec_len_from_disk(de->rec_len);
464 	de->inode = cpu_to_le32(inode->i_ino);
465 	ext2_set_de_type(de, inode);
486 	ext2_dirent * de;
505 		de = (ext2_dirent *)kaddr;
507 		while ((char *)de <= kaddr) {
508 			if ((char *)de == dir_end) {
512 				de->rec_len = ext2_rec_len_to_disk(chunk_size);
513 				de->inode = 0;
516 			if (de->rec_len == 0) {
523 			if (ext2_match (namelen, name, de))
525 			name_len = EXT2_DIR_REC_LEN(de->name_len);
526 			rec_len = ext2_rec_len_from_disk(de->rec_len);
527 			if (!de->inode && rec_len >= reclen)
531 			de = (ext2_dirent *) ((char *) de + rec_len);
540 	pos = folio_pos(folio) + offset_in_folio(folio, de);
544 	if (de->inode) {
545 		ext2_dirent *de1 = (ext2_dirent *) ((char *) de + name_len);
547 		de->rec_len = ext2_rec_len_to_disk(name_len);
548 		de = de1;
550 	de->name_len = namelen;
551 	memcpy(de->name, name, namelen);
552 	de->inode = cpu_to_le32(inode->i_ino);
553 	ext2_set_de_type (de, inode);
561 	folio_release_kmap(folio, de);
578 	ext2_dirent *de, *pde = NULL;
585 	de = (ext2_dirent *)(kaddr + from);
587 	while ((char*)de < (char*)dir) {
588 		if (de->rec_len == 0) {
593 		pde = de;
594 		de = ext2_next_entry(de);
622 	struct ext2_dir_entry_2 * de;
636 	de = (struct ext2_dir_entry_2 *)kaddr;
637 	de->name_len = 1;
638 	de->rec_len = ext2_rec_len_to_disk(EXT2_DIR_REC_LEN(1));
639 	memcpy (de->name, ".\0\0", 4);
640 	de->inode = cpu_to_le32(inode->i_ino);
641 	ext2_set_de_type (de, inode);
643 	de = (struct ext2_dir_entry_2 *)(kaddr + EXT2_DIR_REC_LEN(1));
644 	de->name_len = 2;
645 	de->rec_len = ext2_rec_len_to_disk(chunk_size - EXT2_DIR_REC_LEN(1));
646 	de->inode = cpu_to_le32(parent->i_ino);
647 	memcpy (de->name, "..\0", 4);
648 	ext2_set_de_type (de, inode);
667 		ext2_dirent *de;
673 		de = (ext2_dirent *)kaddr;
676 		while ((char *)de <= kaddr) {
677 			if (de->rec_len == 0) {
680 				printk("kaddr=%p, de=%p\n", kaddr, de);
683 			if (de->inode != 0) {
685 				if (de->name[0] != '.')
687 				if (de->name_len > 2)
689 				if (de->name_len < 2) {
690 					if (de->inode !=
693 				} else if (de->name[1] != '.')
696 			de = ext2_next_entry(de);