Lines Matching refs: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_mem((size_t) (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;
167 *ret_scan = scan;
171 void ext2fs_close_inode_scan(ext2_inode_scan scan)
173 if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))
176 ext2fs_free_mem(&scan->inode_buffer);
177 scan->inode_buffer = NULL;
178 ext2fs_free_mem(&scan->temp_buffer);
179 scan->temp_buffer = NULL;
180 ext2fs_free_mem(&scan);
183 void ext2fs_set_inode_callback(ext2_inode_scan scan,
189 if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))
192 scan->done_group = done_group;
193 scan->done_group_data = done_group_data;
196 int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
201 if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))
204 old_flags = scan->scan_flags;
205 scan->scan_flags &= ~clear_flags;
206 scan->scan_flags |= set_flags;
214 static errcode_t get_next_blockgroup(ext2_inode_scan scan)
216 scan->current_group++;
217 scan->groups_left--;
219 scan->current_block = scan->fs->
220 group_desc[scan->current_group].bg_inode_table;
222 scan->current_inode = scan->current_group *
223 EXT2_INODES_PER_GROUP(scan->fs->super);
225 scan->bytes_left = 0;
226 scan->inodes_left = EXT2_INODES_PER_GROUP(scan->fs->super);
227 scan->blocks_left = scan->fs->inode_blocks_per_group;
231 errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
234 scan->current_group = group - 1;
235 scan->groups_left = scan->fs->group_desc_count - group;
236 return get_next_blockgroup(scan);
246 static errcode_t check_for_inode_bad_blocks(ext2_inode_scan scan,
249 blk_t blk = scan->current_block;
250 badblocks_list bb = scan->fs->badblocks;
265 while (blk > bb->list[scan->bad_block_ptr]) {
266 if (++scan->bad_block_ptr >= bb->num) {
267 scan->scan_flags &= ~EXT2_SF_CHK_BADBLOCKS;
280 if (blk == bb->list[scan->bad_block_ptr]) {
281 scan->scan_flags |= EXT2_SF_BAD_INODE_BLK;
283 if (++scan->bad_block_ptr >= bb->num)
284 scan->scan_flags &= ~EXT2_SF_CHK_BADBLOCKS;
294 if ((blk + *num_blocks) > bb->list[scan->bad_block_ptr])
295 *num_blocks = (int) (bb->list[scan->bad_block_ptr] - blk);
304 static errcode_t get_next_blocks(ext2_inode_scan scan)
314 num_blocks = scan->inode_buffer_blocks;
315 if (num_blocks > scan->blocks_left)
316 num_blocks = scan->blocks_left;
322 if (scan->scan_flags & EXT2_SF_BAD_INODE_BLK) {
323 if (scan->bytes_left)
324 scan->scan_flags |= EXT2_SF_BAD_EXTRA_BYTES;
325 scan->scan_flags &= ~EXT2_SF_BAD_INODE_BLK;
331 if (scan->scan_flags & EXT2_SF_CHK_BADBLOCKS) {
332 retval = check_for_inode_bad_blocks(scan, &num_blocks);
337 if ((scan->scan_flags & EXT2_SF_BAD_INODE_BLK) ||
338 (scan->current_block == 0)) {
339 memset(scan->inode_buffer, 0,
340 (size_t) num_blocks * scan->fs->blocksize);
342 retval = io_channel_read_blk(scan->fs->io,
343 scan->current_block,
345 scan->inode_buffer);
349 scan->ptr = scan->inode_buffer;
350 scan->bytes_left = num_blocks * scan->fs->blocksize;
352 scan->blocks_left -= num_blocks;
353 if (scan->current_block)
354 scan->current_block += num_blocks;
358 errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, ext2_ino_t *ino,
364 EXT2_CHECK_MAGIC(scan, EXT2_ET_MAGIC_INODE_SCAN);
369 if (scan->inodes_left <= 0) {
371 if (scan->done_group) {
372 retval = (scan->done_group)
373 (scan->fs, scan->current_group,
374 scan->done_group_data);
378 if (scan->groups_left <= 0) {
382 retval = get_next_blockgroup(scan);
390 if (scan->current_block == 0) {
391 if (scan->scan_flags & EXT2_SF_SKIP_MISSING_ITABLE) {
402 if (scan->bytes_left < scan->inode_size) {
403 memcpy(scan->temp_buffer, scan->ptr, scan->bytes_left);
404 extra_bytes = scan->bytes_left;
406 retval = get_next_blocks(scan);
413 memcpy(scan->temp_buffer+extra_bytes, scan->ptr,
414 scan->inode_size - extra_bytes);
415 scan->ptr += scan->inode_size - extra_bytes;
416 scan->bytes_left -= scan->inode_size - extra_bytes;
419 if ((scan->fs->flags & EXT2_FLAG_SWAP_BYTES) ||
420 (scan->fs->flags & EXT2_FLAG_SWAP_BYTES_READ))
421 ext2fs_swap_inode_full(scan->fs,
423 (struct ext2_inode_large *) scan->temp_buffer,
427 *inode = *((struct ext2_inode *) scan->temp_buffer);
428 if (scan->scan_flags & EXT2_SF_BAD_EXTRA_BYTES)
430 scan->scan_flags &= ~EXT2_SF_BAD_EXTRA_BYTES;
433 if ((scan->fs->flags & EXT2_FLAG_SWAP_BYTES) ||
434 (scan->fs->flags & EXT2_FLAG_SWAP_BYTES_READ))
435 ext2fs_swap_inode_full(scan->fs,
437 (struct ext2_inode_large *) scan->ptr,
441 memcpy(inode, scan->ptr, bufsize);
442 scan->ptr += scan->inode_size;
443 scan->bytes_left -= scan->inode_size;
444 if (scan->scan_flags & EXT2_SF_BAD_INODE_BLK)
448 scan->inodes_left--;
449 scan->current_inode++;
450 *ino = scan->current_inode;
454 errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
457 return ext2fs_get_next_inode_full(scan, ino, inode,