Lines Matching full:scan
47 ext2_inode_scan scan,
108 ext2_inode_scan scan;
133 retval = ext2fs_get_mem(sizeof(struct ext2_struct_inode_scan), &scan);
136 memset(scan, 0, sizeof(struct ext2_struct_inode_scan));
138 scan->magic = EXT2_ET_MAGIC_INODE_SCAN;
139 scan->fs = fs;
140 scan->inode_size = EXT2_INODE_SIZE(fs->super);
141 scan->bytes_left = 0;
142 scan->current_group = 0;
143 scan->groups_left = fs->group_desc_count - 1;
144 scan->inode_buffer_blocks = buffer_blocks ? buffer_blocks : 8;
145 scan->current_block = scan->fs->
146 group_desc[scan->current_group].bg_inode_table;
147 scan->inodes_left = EXT2_INODES_PER_GROUP(scan->fs->super);
148 scan->blocks_left = scan->fs->inode_blocks_per_group;
149 retval = ext2fs_get_array(scan->inode_buffer_blocks,
151 &scan->inode_buffer);
152 scan->done_group = 0;
153 scan->done_group_data = 0;
154 scan->bad_block_ptr = 0;
156 ext2fs_free_mem(&scan);
159 retval = ext2fs_get_mem(scan->inode_size, &scan->temp_buffer);
161 ext2fs_free_mem(&scan->inode_buffer);
162 ext2fs_free_mem(&scan);
165 if (scan->fs->badblocks && scan->fs->badblocks->num)
166 scan->scan_flags |= EXT2_SF_CHK_BADBLOCKS;
169 scan->scan_flags |= EXT2_SF_DO_LAZY;
170 *ret_scan = scan;
174 void ext2fs_close_inode_scan(ext2_inode_scan scan)
176 if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))
179 ext2fs_free_mem(&scan->inode_buffer);
180 scan->inode_buffer = NULL;
181 ext2fs_free_mem(&scan->temp_buffer);
182 scan->temp_buffer = NULL;
183 ext2fs_free_mem(&scan);
187 void ext2fs_set_inode_callback(ext2_inode_scan scan,
189 ext2_inode_scan scan,
194 if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))
197 scan->done_group = done_group;
198 scan->done_group_data = done_group_data;
201 int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
206 if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))
209 old_flags = scan->scan_flags;
210 scan->scan_flags &= ~clear_flags;
211 scan->scan_flags |= set_flags;
219 static errcode_t get_next_blockgroup(ext2_inode_scan scan)
221 scan->current_group++;
222 scan->groups_left--;
224 scan->current_block = scan->fs->
225 group_desc[scan->current_group].bg_inode_table;
227 scan->current_inode = scan->current_group *
228 EXT2_INODES_PER_GROUP(scan->fs->super);
230 scan->bytes_left = 0;
231 scan->inodes_left = EXT2_INODES_PER_GROUP(scan->fs->super);
232 scan->blocks_left = scan->fs->inode_blocks_per_group;
236 errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
239 scan->current_group = group - 1;
240 scan->groups_left = scan->fs->group_desc_count - group;
241 return get_next_blockgroup(scan);
251 static errcode_t check_for_inode_bad_blocks(ext2_inode_scan scan,
254 blk_t blk = scan->current_block;
255 badblocks_list bb = scan->fs->badblocks;
270 while (blk > bb->list[scan->bad_block_ptr]) {
271 if (++scan->bad_block_ptr >= bb->num) {
272 scan->scan_flags &= ~EXT2_SF_CHK_BADBLOCKS;
285 if (blk == bb->list[scan->bad_block_ptr]) {
286 scan->scan_flags |= EXT2_SF_BAD_INODE_BLK;
288 if (++scan->bad_block_ptr >= bb->num)
289 scan->scan_flags &= ~EXT2_SF_CHK_BADBLOCKS;
299 if ((blk + *num_blocks) > bb->list[scan->bad_block_ptr])
300 *num_blocks = (int) (bb->list[scan->bad_block_ptr] - blk);
309 static errcode_t get_next_blocks(ext2_inode_scan scan)
319 num_blocks = scan->inode_buffer_blocks;
320 if (num_blocks > scan->blocks_left)
321 num_blocks = scan->blocks_left;
327 if (scan->scan_flags & EXT2_SF_BAD_INODE_BLK) {
328 if (scan->bytes_left)
329 scan->scan_flags |= EXT2_SF_BAD_EXTRA_BYTES;
330 scan->scan_flags &= ~EXT2_SF_BAD_INODE_BLK;
336 if (scan->scan_flags & EXT2_SF_CHK_BADBLOCKS) {
337 retval = check_for_inode_bad_blocks(scan, &num_blocks);
342 if ((scan->scan_flags & EXT2_SF_BAD_INODE_BLK) ||
343 (scan->current_block == 0)) {
344 memset(scan->inode_buffer, 0,
345 (size_t) num_blocks * scan->fs->blocksize);
347 retval = io_channel_read_blk(scan->fs->io,
348 scan->current_block,
350 scan->inode_buffer);
354 scan->ptr = scan->inode_buffer;
355 scan->bytes_left = num_blocks * scan->fs->blocksize;
357 scan->blocks_left -= num_blocks;
358 if (scan->current_block)
359 scan->current_block += num_blocks;
370 static inline int is_empty_scan(ext2_inode_scan scan)
374 if (scan->bytes_left == 0)
377 for (i=0; i < scan->bytes_left; i++)
378 if (scan->ptr[i])
384 errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, ext2_ino_t *ino,
390 EXT2_CHECK_MAGIC(scan, EXT2_ET_MAGIC_INODE_SCAN);
395 if (scan->inodes_left <= 0) {
397 if (scan->done_group) {
398 retval = (scan->done_group)
399 (scan->fs, scan, scan->current_group,
400 scan->done_group_data);
404 if (scan->groups_left <= 0) {
408 retval = get_next_blockgroup(scan);
416 if ((scan->scan_flags & EXT2_SF_DO_LAZY) &&
417 (scan->fs->group_desc[scan->current_group].bg_flags &
420 if (scan->current_block == 0) {
421 if (scan->scan_flags & EXT2_SF_SKIP_MISSING_ITABLE) {
432 if (scan->bytes_left < scan->inode_size) {
433 memcpy(scan->temp_buffer, scan->ptr, scan->bytes_left);
434 extra_bytes = scan->bytes_left;
436 retval = get_next_blocks(scan);
444 if (is_empty_scan(scan))
451 memcpy(scan->temp_buffer+extra_bytes, scan->ptr,
452 scan->inode_size - extra_bytes);
453 scan->ptr += scan->inode_size - extra_bytes;
454 scan->bytes_left -= scan->inode_size - extra_bytes;
458 if ((scan->fs->flags & EXT2_FLAG_SWAP_BYTES) ||
459 (scan->fs->flags & EXT2_FLAG_SWAP_BYTES_READ))
460 ext2fs_swap_inode_full(scan->fs,
462 (struct ext2_inode_large *) scan->temp_buffer,
466 *inode = *((struct ext2_inode *) scan->temp_buffer);
467 if (scan->scan_flags & EXT2_SF_BAD_EXTRA_BYTES)
469 scan->scan_flags &= ~EXT2_SF_BAD_EXTRA_BYTES;
473 if ((scan->fs->flags & EXT2_FLAG_SWAP_BYTES) ||
474 (scan->fs->flags & EXT2_FLAG_SWAP_BYTES_READ))
475 ext2fs_swap_inode_full(scan->fs,
477 (struct ext2_inode_large *) scan->ptr,
481 memcpy(inode, scan->ptr, bufsize);
482 scan->ptr += scan->inode_size;
483 scan->bytes_left -= scan->inode_size;
484 if (scan->scan_flags & EXT2_SF_BAD_INODE_BLK)
488 scan->inodes_left--;
489 scan->current_inode++;
490 *ino = scan->current_inode;
494 errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
497 return ext2fs_get_next_inode_full(scan, ino, inode,
