file_systems/fat/file.c

18 #include "iter.h"
344 	//struct csi iter;
391 	if ((result = init_csi(vol, cluster1, 0, &iter)) != B_OK) {
396 	if (diff && ((result = iter_csi(&iter, diff)) != B_OK)) {
402 	ASSERT(iter.cluster == get_nth_fat_entry(vol, node->cluster, pos / vol->bytes_per_sector / vol->sectors_per_cluster));
407 		buffer = csi_get_block(&iter);
409 			dprintf("dosfs_read: error reading cluster %lx, sector %lx\n", iter.cluster, iter.sector);
416 		csi_release_block(&iter);
420 			if ((result = iter_csi(&iter, 1)) != B_OK) {
429 		result = csi_read_blocks(&iter, (uint8*)buf + bytes_read, *len - bytes_read);
437 			if ((result = iter_csi(&iter, 1)) != B_OK) {
448 		buffer = csi_get_block(&iter);
450 			dprintf("dosfs_read: error reading cluster %lx, sector %lx\n", iter.cluster, iter.sector);
456 		csi_release_block(&iter);
463 		cookie->ccache.cluster = iter.cluster;
491 	//struct csi iter;
579 	if ((result = init_csi(vol, cluster1, 0, &iter)) != B_OK) {
584 	if (diff && ((result = iter_csi(&iter, diff)) != B_OK)) {
590 	ASSERT(iter.cluster == get_nth_fat_entry(vol, node->cluster, pos / vol->bytes_per_sector / vol->sectors_per_cluster));
598 		buffer = csi_get_block(&iter);
600 			dprintf("dosfs_write: error writing cluster %lx, sector %lx\n", iter.cluster, iter.sector);
607 		csi_mark_block_dirty(&iter);
608 		csi_release_block(&iter);
612 			if ((result = iter_csi(&iter, 1)) != B_OK) {
621 		result = csi_write_blocks(&iter, (uint8*)buf + bytes_written, *len - bytes_written);
629 			if ((result = iter_csi(&iter, 1)) != B_OK) {
640 		buffer = csi_get_block(&iter);
642 			dprintf("error writing cluster %lx, sector %lx\n", iter.cluster, iter.sector);
648 		csi_mark_block_dirty(&iter);
649 		csi_release_block(&iter);
656 		cookie->ccache.cluster = iter.cluster;
1496 	struct csi iter;
1530 	if ((result = init_csi(vol, cluster1, 0, &iter)) != B_OK) {
1535 	if (diff && ((result = iter_csi(&iter, diff)) != B_OK)) {
1541 	ASSERT(iter.cluster == get_nth_fat_entry(vol, node->cluster, pos / vol->bytes_per_sector / vol->sectors_per_cluster));
1548 		vecs[index].offset = csi_to_block(&iter) * vol->bytes_per_sector + (pos % vol->bytes_per_sector);
1560 			if ((result = iter_csi(&iter, 1)) != B_OK) {
1571 		off_t block = csi_to_block(&iter);
1575 			old_csi = iter;
1576 			err = iter_csi(&iter, 1);
1577 			if ((len - bytes_read) < (sectors + 1) * iter.vol->bytes_per_sector)
1579 			if ((err < B_OK) || (block + sectors != csi_to_block(&iter)))
1588 		iter = old_csi;
1597 			if ((result = iter_csi(&iter, 1)) != B_OK) {
1607 		vecs[index].offset = csi_to_block(&iter) * vol->bytes_per_sector;