48 					      ext2_inode_scan scan,
109 	ext2_inode_scan	scan;  in ext2fs_open_inode_scan()  local
134 	retval = ext2fs_get_mem(sizeof(struct ext2_struct_inode_scan), &scan);  in ext2fs_open_inode_scan()
137 	memset(scan, 0, sizeof(struct ext2_struct_inode_scan));  in ext2fs_open_inode_scan()
139 	scan->magic = EXT2_ET_MAGIC_INODE_SCAN;  in ext2fs_open_inode_scan()
140 	scan->fs = fs;  in ext2fs_open_inode_scan()
141 	scan->inode_size = EXT2_INODE_SIZE(fs->super);  in ext2fs_open_inode_scan()
142 	scan->bytes_left = 0;  in ext2fs_open_inode_scan()
143 	scan->current_group = 0;  in ext2fs_open_inode_scan()
144 	scan->groups_left = fs->group_desc_count - 1;  in ext2fs_open_inode_scan()
145 	scan->inode_buffer_blocks = buffer_blocks ? buffer_blocks : 8;  in ext2fs_open_inode_scan()
146 	scan->current_block = ext2fs_inode_table_loc(scan->fs,  in ext2fs_open_inode_scan()
147 						     scan->current_group);  in ext2fs_open_inode_scan()
148 	scan->inodes_left = EXT2_INODES_PER_GROUP(scan->fs->super);  in ext2fs_open_inode_scan()
149 	scan->blocks_left = scan->fs->inode_blocks_per_group;  in ext2fs_open_inode_scan()
152 		scan->inodes_left -=  in ext2fs_open_inode_scan()
153 			ext2fs_bg_itable_unused(fs, scan->current_group);  in ext2fs_open_inode_scan()
154 		scan->blocks_left =  in ext2fs_open_inode_scan()
155 			(scan->inodes_left +  in ext2fs_open_inode_scan()
156 			 (fs->blocksize / scan->inode_size - 1)) *  in ext2fs_open_inode_scan()
157 			scan->inode_size / fs->blocksize;  in ext2fs_open_inode_scan()
159 	retval = io_channel_alloc_buf(fs->io, scan->inode_buffer_blocks,  in ext2fs_open_inode_scan()
160 				      &scan->inode_buffer);  in ext2fs_open_inode_scan()
161 	scan->done_group = 0;  in ext2fs_open_inode_scan()
162 	scan->done_group_data = 0;  in ext2fs_open_inode_scan()
163 	scan->bad_block_ptr = 0;  in ext2fs_open_inode_scan()
165 		ext2fs_free_mem(&scan);  in ext2fs_open_inode_scan()
168 	retval = ext2fs_get_mem(scan->inode_size, &scan->temp_buffer);  in ext2fs_open_inode_scan()
170 		ext2fs_free_mem(&scan->inode_buffer);  in ext2fs_open_inode_scan()
171 		ext2fs_free_mem(&scan);  in ext2fs_open_inode_scan()
174 	if (scan->fs->badblocks && scan->fs->badblocks->num)  in ext2fs_open_inode_scan()
175 		scan->scan_flags |= EXT2_SF_CHK_BADBLOCKS;  in ext2fs_open_inode_scan()
178 		scan->scan_flags |= EXT2_SF_DO_LAZY;  in ext2fs_open_inode_scan()
179 	*ret_scan = scan;  in ext2fs_open_inode_scan()
183 void ext2fs_close_inode_scan(ext2_inode_scan scan)  in ext2fs_close_inode_scan()  argument
185 	if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))  in ext2fs_close_inode_scan()
188 	ext2fs_free_mem(&scan->inode_buffer);  in ext2fs_close_inode_scan()
189 	scan->inode_buffer = NULL;  in ext2fs_close_inode_scan()
190 	ext2fs_free_mem(&scan->temp_buffer);  in ext2fs_close_inode_scan()
191 	scan->temp_buffer = NULL;  in ext2fs_close_inode_scan()
192 	ext2fs_free_mem(&scan);  in ext2fs_close_inode_scan()
196 void ext2fs_set_inode_callback(ext2_inode_scan scan,  in ext2fs_set_inode_callback()  argument
198 						       ext2_inode_scan scan,  in ext2fs_set_inode_callback()
203 	if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))  in ext2fs_set_inode_callback()
206 	scan->done_group = done_group;  in ext2fs_set_inode_callback()
207 	scan->done_group_data = done_group_data;  in ext2fs_set_inode_callback()
210 int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,  in ext2fs_inode_scan_flags()  argument
215 	if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))  in ext2fs_inode_scan_flags()
218 	old_flags = scan->scan_flags;  in ext2fs_inode_scan_flags()
219 	scan->scan_flags &= ~clear_flags;  in ext2fs_inode_scan_flags()
220 	scan->scan_flags |= set_flags;  in ext2fs_inode_scan_flags()
228 static errcode_t get_next_blockgroup(ext2_inode_scan scan)  in get_next_blockgroup()  argument
230 	ext2_filsys fs = scan->fs;  in get_next_blockgroup()
232 	scan->current_group++;  in get_next_blockgroup()
233 	scan->groups_left--;  in get_next_blockgroup()
235 	scan->current_block = ext2fs_inode_table_loc(scan->fs,  in get_next_blockgroup()
236 						     scan->current_group);  in get_next_blockgroup()
237 	scan->current_inode = scan->current_group *  in get_next_blockgroup()
240 	scan->bytes_left = 0;  in get_next_blockgroup()
241 	scan->inodes_left = EXT2_INODES_PER_GROUP(fs->super);  in get_next_blockgroup()
242 	scan->blocks_left = fs->inode_blocks_per_group;  in get_next_blockgroup()
245 		scan->inodes_left -=  in get_next_blockgroup()
246 			ext2fs_bg_itable_unused(fs, scan->current_group);  in get_next_blockgroup()
247 		scan->blocks_left =  in get_next_blockgroup()
248 			(scan->inodes_left +  in get_next_blockgroup()
249 			 (fs->blocksize / scan->inode_size - 1)) *  in get_next_blockgroup()
250 			scan->inode_size / fs->blocksize;  in get_next_blockgroup()
256 errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,  in ext2fs_inode_scan_goto_blockgroup()  argument
259 	scan->current_group = group - 1;  in ext2fs_inode_scan_goto_blockgroup()
260 	scan->groups_left = scan->fs->group_desc_count - group;  in ext2fs_inode_scan_goto_blockgroup()
261 	return get_next_blockgroup(scan);  in ext2fs_inode_scan_goto_blockgroup()
271 static errcode_t check_for_inode_bad_blocks(ext2_inode_scan scan,  in check_for_inode_bad_blocks()  argument
274 	blk64_t	blk = scan->current_block;  in check_for_inode_bad_blocks()
275 	badblocks_list	bb = scan->fs->badblocks;  in check_for_inode_bad_blocks()
290 	while (blk > bb->list[scan->bad_block_ptr]) {  in check_for_inode_bad_blocks()
291 		if (++scan->bad_block_ptr >= bb->num) {  in check_for_inode_bad_blocks()
292 			scan->scan_flags &= ~EXT2_SF_CHK_BADBLOCKS;  in check_for_inode_bad_blocks()
305 	if (blk == bb->list[scan->bad_block_ptr]) {  in check_for_inode_bad_blocks()
306 		scan->scan_flags |= EXT2_SF_BAD_INODE_BLK;  in check_for_inode_bad_blocks()
308 		if (++scan->bad_block_ptr >= bb->num)  in check_for_inode_bad_blocks()
309 			scan->scan_flags &= ~EXT2_SF_CHK_BADBLOCKS;  in check_for_inode_bad_blocks()
319 	if ((blk + *num_blocks) > bb->list[scan->bad_block_ptr])  in check_for_inode_bad_blocks()
320 		*num_blocks = (int) (bb->list[scan->bad_block_ptr] - blk);  in check_for_inode_bad_blocks()
329 static errcode_t get_next_blocks(ext2_inode_scan scan)  in get_next_blocks()  argument
339 	num_blocks = scan->inode_buffer_blocks;  in get_next_blocks()
340 	if (num_blocks > scan->blocks_left)  in get_next_blocks()
341 		num_blocks = scan->blocks_left;  in get_next_blocks()
347 	if (scan->scan_flags & EXT2_SF_BAD_INODE_BLK) {  in get_next_blocks()
348 		if (scan->bytes_left)  in get_next_blocks()
349 			scan->scan_flags |= EXT2_SF_BAD_EXTRA_BYTES;  in get_next_blocks()
350 		scan->scan_flags &= ~EXT2_SF_BAD_INODE_BLK;  in get_next_blocks()
356 	if (scan->scan_flags & EXT2_SF_CHK_BADBLOCKS) {  in get_next_blocks()
357 		retval = check_for_inode_bad_blocks(scan, &num_blocks);  in get_next_blocks()
362 	if ((scan->scan_flags & EXT2_SF_BAD_INODE_BLK) ||  in get_next_blocks()
363 	    (scan->current_block == 0)) {  in get_next_blocks()
364 		memset(scan->inode_buffer, 0,  in get_next_blocks()
365 		       (size_t) num_blocks * scan->fs->blocksize);  in get_next_blocks()
367 		retval = io_channel_read_blk64(scan->fs->io,  in get_next_blocks()
368 					     scan->current_block,  in get_next_blocks()
370 					     scan->inode_buffer);  in get_next_blocks()
374 	scan->ptr = scan->inode_buffer;  in get_next_blocks()
375 	scan->bytes_left = num_blocks * scan->fs->blocksize;  in get_next_blocks()
377 	scan->blocks_left -= num_blocks;  in get_next_blocks()
378 	if (scan->current_block)  in get_next_blocks()
379 		scan->current_block += num_blocks;  in get_next_blocks()
390 static inline int is_empty_scan(ext2_inode_scan scan)
394 	if (scan->bytes_left == 0)
397 	for (i=0; i < scan->bytes_left; i++)
398 		if (scan->ptr[i])
404 errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, ext2_ino_t *ino,  in ext2fs_get_next_inode_full()  argument
410 	EXT2_CHECK_MAGIC(scan, EXT2_ET_MAGIC_INODE_SCAN);  in ext2fs_get_next_inode_full()
415 	if (scan->inodes_left <= 0) {  in ext2fs_get_next_inode_full()
417 		if (scan->done_group) {  in ext2fs_get_next_inode_full()
418 			retval = (scan->done_group)  in ext2fs_get_next_inode_full()
419 				(scan->fs, scan, scan->current_group,  in ext2fs_get_next_inode_full()
420 				 scan->done_group_data);  in ext2fs_get_next_inode_full()
424 		if (scan->groups_left <= 0) {  in ext2fs_get_next_inode_full()
428 		retval = get_next_blockgroup(scan);  in ext2fs_get_next_inode_full()
436 	if ((scan->scan_flags & EXT2_SF_DO_LAZY) &&  in ext2fs_get_next_inode_full()
437 	    (ext2fs_bg_flags_test(scan->fs, scan->current_group, EXT2_BG_INODE_UNINIT)  in ext2fs_get_next_inode_full()
440 	if (scan->inodes_left == 0)  in ext2fs_get_next_inode_full()
442 	if (scan->current_block == 0) {  in ext2fs_get_next_inode_full()
443 		if (scan->scan_flags & EXT2_SF_SKIP_MISSING_ITABLE) {  in ext2fs_get_next_inode_full()
454 	if (scan->bytes_left < scan->inode_size) {  in ext2fs_get_next_inode_full()
455 		memcpy(scan->temp_buffer, scan->ptr, scan->bytes_left);  in ext2fs_get_next_inode_full()
456 		extra_bytes = scan->bytes_left;  in ext2fs_get_next_inode_full()
458 		retval = get_next_blocks(scan);  in ext2fs_get_next_inode_full()
466 		if (is_empty_scan(scan))  in ext2fs_get_next_inode_full()
473 		memcpy(scan->temp_buffer+extra_bytes, scan->ptr,  in ext2fs_get_next_inode_full()
474 		       scan->inode_size - extra_bytes);  in ext2fs_get_next_inode_full()
475 		scan->ptr += scan->inode_size - extra_bytes;  in ext2fs_get_next_inode_full()
476 		scan->bytes_left -= scan->inode_size - extra_bytes;  in ext2fs_get_next_inode_full()
480 		ext2fs_swap_inode_full(scan->fs,  in ext2fs_get_next_inode_full()
482 			       (struct ext2_inode_large *) scan->temp_buffer,  in ext2fs_get_next_inode_full()
485 		*inode = *((struct ext2_inode *) scan->temp_buffer);  in ext2fs_get_next_inode_full()
487 		if (scan->scan_flags & EXT2_SF_BAD_EXTRA_BYTES)  in ext2fs_get_next_inode_full()
489 		scan->scan_flags &= ~EXT2_SF_BAD_EXTRA_BYTES;  in ext2fs_get_next_inode_full()
493 		ext2fs_swap_inode_full(scan->fs,  in ext2fs_get_next_inode_full()
495 				(struct ext2_inode_large *) scan->ptr,  in ext2fs_get_next_inode_full()
498 		memcpy(inode, scan->ptr, bufsize);  in ext2fs_get_next_inode_full()
500 		scan->ptr += scan->inode_size;  in ext2fs_get_next_inode_full()
501 		scan->bytes_left -= scan->inode_size;  in ext2fs_get_next_inode_full()
502 		if (scan->scan_flags & EXT2_SF_BAD_INODE_BLK)  in ext2fs_get_next_inode_full()
506 	scan->inodes_left--;  in ext2fs_get_next_inode_full()
507 	scan->current_inode++;  in ext2fs_get_next_inode_full()
508 	*ino = scan->current_inode;  in ext2fs_get_next_inode_full()
512 errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,  in ext2fs_get_next_inode()  argument
515 	return ext2fs_get_next_inode_full(scan, ino, inode,  in ext2fs_get_next_inode()