212 static int new_dir_table(fat_itr *itr);
213 static int flush_dir(fat_itr *itr);
220 fill_dir_slot(fat_itr *itr, const char *l_name)  in fill_dir_slot()  argument
228 	checksum = mkcksum(itr->dent->name, itr->dent->ext);  in fill_dir_slot()
243 		memcpy(itr->dent, slotptr, sizeof(dir_slot));  in fill_dir_slot()
247 		if (itr->remaining == 0)  in fill_dir_slot()
248 			flush_dir(itr);  in fill_dir_slot()
251 		if (!fat_itr_next(itr))  in fill_dir_slot()
252 			if (!itr->dent &&  in fill_dir_slot()
253 			    (!itr->is_root || itr->fsdata->fatsize == 32) &&  in fill_dir_slot()
254 			    new_dir_table(itr))  in fill_dir_slot()
472 flush_dir(fat_itr *itr)  in flush_dir()  argument
474 	fsdata *mydata = itr->fsdata;  in flush_dir()
477 	if (!itr->is_root || mydata->fatsize == 32)  in flush_dir()
478 		return set_cluster(mydata, itr->clust, itr->block,  in flush_dir()
481 	sect_offset = itr->clust * mydata->clust_size;  in flush_dir()
487 	return set_sectors(mydata, startsect, itr->block,  in flush_dir()
626 static int new_dir_table(fat_itr *itr)  in new_dir_table()  argument
628 	fsdata *mydata = itr->fsdata;  in new_dir_table()
633 	set_fatent_value(mydata, itr->clust, dir_newclust);  in new_dir_table()
641 	itr->clust = dir_newclust;  in new_dir_table()
642 	itr->next_clust = dir_newclust;  in new_dir_table()
647 	memset(itr->block, 0x00, bytesperclust);  in new_dir_table()
649 	itr->dent = (dir_entry *)itr->block;  in new_dir_table()
650 	itr->last_cluster = 1;  in new_dir_table()
651 	itr->remaining = bytesperclust / sizeof(dir_entry) - 1;  in new_dir_table()
965 static dir_entry *find_directory_entry(fat_itr *itr, char *filename)  in find_directory_entry()  argument
969 	while (fat_itr_next(itr)) {  in find_directory_entry()
971 		if (!strcasecmp(filename, itr->name))  in find_directory_entry()
973 		else if (itr->name != itr->s_name &&  in find_directory_entry()
974 			 !strcasecmp(filename, itr->s_name))  in find_directory_entry()
980 		if (itr->dent->name[0] == '\0')  in find_directory_entry()
983 			return itr->dent;  in find_directory_entry()
987 	if (!itr->dent &&  in find_directory_entry()
988 	    (!itr->is_root || itr->fsdata->fatsize == 32) &&  in find_directory_entry()
989 	    new_dir_table(itr))  in find_directory_entry()
991 		itr->dent = NULL;  in find_directory_entry()
1078 	fat_itr *itr = NULL;  in file_fat_write_at()  local
1102 	itr = malloc_cache_aligned(sizeof(fat_itr));  in file_fat_write_at()
1103 	if (!itr) {  in file_fat_write_at()
1108 	ret = fat_itr_root(itr, &datablock);  in file_fat_write_at()
1114 	ret = fat_itr_resolve(itr, parent, TYPE_DIR);  in file_fat_write_at()
1120 	retdent = find_directory_entry(itr, l_filename);  in file_fat_write_at()
1123 		if (fat_itr_isdir(itr)) {  in file_fat_write_at()
1143 		if (itr->is_root) {  in file_fat_write_at()
1152 		if (!itr->dent) {  in file_fat_write_at()
1164 		memset(itr->dent, 0, sizeof(*itr->dent));  in file_fat_write_at()
1167 		set_name(itr->dent, filename);  in file_fat_write_at()
1170 		if (fill_dir_slot(itr, filename)) {  in file_fat_write_at()
1176 		fill_dentry(itr->fsdata, itr->dent, filename, 0, size, 0x20);  in file_fat_write_at()
1178 		retdent = itr->dent;  in file_fat_write_at()
1198 	ret = flush_dir(itr);  in file_fat_write_at()
1207 	free(itr);  in file_fat_write_at()
1217 static int fat_dir_entries(fat_itr *itr)  in fat_dir_entries()  argument
1232 	fat_itr_child(dirs, itr);  in fat_dir_entries()
1254 static int delete_dentry(fat_itr *itr)  in delete_dentry()  argument
1256 	fsdata *mydata = itr->fsdata;  in delete_dentry()
1257 	dir_entry *dentptr = itr->dent;  in delete_dentry()
1275 	if (flush_dir(itr)) {  in delete_dentry()
1286 	fat_itr *itr = NULL;  in fat_unlink()  local
1304 	itr = malloc_cache_aligned(sizeof(fat_itr));  in fat_unlink()
1305 	if (!itr) {  in fat_unlink()
1311 	ret = fat_itr_root(itr, &fsdata);  in fat_unlink()
1317 	ret = fat_itr_resolve(itr, dirname, TYPE_DIR);  in fat_unlink()
1324 	if (!find_directory_entry(itr, basename)) {  in fat_unlink()
1330 	if (fat_itr_isdir(itr)) {  in fat_unlink()
1331 		n_entries = fat_dir_entries(itr);  in fat_unlink()
1344 	ret = delete_dentry(itr);  in fat_unlink()
1348 	free(itr);  in fat_unlink()
1359 	fat_itr *itr = NULL;  in fat_mkdir()  local
1383 	itr = malloc_cache_aligned(sizeof(fat_itr));  in fat_mkdir()
1384 	if (!itr) {  in fat_mkdir()
1389 	ret = fat_itr_root(itr, &datablock);  in fat_mkdir()
1395 	ret = fat_itr_resolve(itr, parent, TYPE_DIR);  in fat_mkdir()
1401 	retdent = find_directory_entry(itr, l_dirname);  in fat_mkdir()
1408 		if (itr->is_root) {  in fat_mkdir()
1417 		if (!itr->dent) {  in fat_mkdir()
1423 		memset(itr->dent, 0, sizeof(*itr->dent));  in fat_mkdir()
1426 		set_name(itr->dent, dirname);  in fat_mkdir()
1427 		fill_dir_slot(itr, dirname);  in fat_mkdir()
1430 		fill_dentry(itr->fsdata, itr->dent, dirname, 0, 0,  in fat_mkdir()
1433 		retdent = itr->dent;  in fat_mkdir()
1452 	set_start_cluster(mydata, &dotdent[1], itr->start_clust);  in fat_mkdir()
1477 	ret = flush_dir(itr);  in fat_mkdir()
1484 	free(itr);  in fat_mkdir()