file_systems/fat/dir.cpp

6 #include "dir.h"
28 static status_t	findfile(nspace *vol, vnode *dir, const char *file,
45 //!	Scans dir for the next entry, using the state stored in a struct diri.
197 get_next_dirent(nspace *vol, vnode *dir, struct diri *iter, ino_t *vnid,
208 	} while ((info.mode & FAT_VOLUME) && (dir->vnid == vol->root_vnode.vnid));
212 		if (vnid) *vnid = dir->vnid;
215 		if (vnid) *vnid = dir->dir_vnid;
219 				? GENERATE_DIR_CLUSTER_VNID(dir->vnid, info.cluster)
220 				: GENERATE_DIR_INDEX_VNID(dir->vnid, info.sindex);
265 check_dir_empty(nspace *vol, vnode *dir)
271 	if (diri_init(vol, dir->cluster, 0, &iter) == NULL) {
276 	i = (dir->vnid == vol->root_vnode.vnid) ? 2 : 0;
304 findfile_case(nspace *vol, vnode *dir, const char *file, ino_t *vnid,
307 	return findfile(vol, dir, file, vnid, node, true, false, NULL);
312 findfile_nocase(nspace *vol, vnode *dir, const char *file, ino_t *vnid,
315 	return findfile(vol, dir, file, vnid, node, false, false, NULL);
320 findfile_nocase_duplicates(nspace *vol, vnode *dir, const char *file,
323 	return findfile(vol, dir, file, vnid, node, false, true, dups_exist);
328 findfile_case_duplicates(nspace *vol, vnode *dir, const char *file,
331 	return findfile(vol, dir, file, vnid, node, true, true, dups_exist);
336 findfile(nspace *vol, vnode *dir, const char *file, ino_t *vnid,
353 //	dprintf("findfile: %s in %Lx, case %d dups %d\n", file, dir->vnid, check_case, check_dups);
355 	DPRINTF(1, ("findfile: %s in %" B_PRIdINO "\n", file, dir->vnid));
362 	if (strcmp(file,".") == 0 && dir->vnid == vol->root_vnode.vnid) {
364 		found_vnid = dir->vnid;
365 	} else if (strcmp(file, "..") == 0 && dir->vnid == vol->root_vnode.vnid) {
367 		found_vnid = dir->dir_vnid;
372 		if (diri_init(vol, dir->cluster, 0, &diri) == NULL) {
381 			result = get_next_dirent(vol, dir, &diri, &_vnid, filename, 512);
475 compact_directory(nspace *vol, vnode *dir)
482 		dir->vnid));
485 	if (IS_FIXED_ROOT(dir->cluster))
488 	if (diri_init(vol, dir->cluster, 0, &diri) == NULL) {
489 		dprintf("compact_directory: cannot open dir at cluster (%" B_PRIu32
490 			")\n", dir->cluster);
500 			// don't compact away volume labels in the root dir
501 			if (!(info.mode & FAT_VOLUME) || (dir->vnid != vol->root_vnode.vnid))
515 					< dir->st_size) {
518 				error = set_fat_chain_length(vol, dir, clusters, true);
519 				dir->st_size = clusters * vol->bytes_per_sector
521 				dir->iteration++;
537 find_short_name(nspace *vol, vnode *dir, const uchar *name)
543 	buffer = diri_init(vol, dir->cluster, 0, &diri);
572 _create_dir_entry_(nspace *vol, vnode *dir, struct _entry_info_ *info,
619 	if (diri_init(vol, dir->cluster, 0, &diri) == NULL) {
620 		dprintf("_create_dir_entry_: cannot open dir at cluster (%" B_PRIu32
621 			")\n", dir->cluster);
654 			GENERATE_DIR_INDEX_VNID(dir->cluster, i)) == ENOENT);
659 		dir->st_size, last_entry ? "" : "n't"));
662 	if (*ne * 0x20 >= dir->st_size) {
666 		if (IS_FIXED_ROOT(dir->cluster)) {
677 			" clusters\n", dir->st_size / vol->bytes_per_sector
679 		if ((error = set_fat_chain_length(vol, dir, clusters_needed, false))
684 		dir->st_size = vol->bytes_per_sector*vol->sectors_per_cluster*clusters_needed;
685 		dir->iteration++;
689 	buffer = diri_init(vol,dir->cluster, *ns, &diri);
691 		dprintf("_create_dir_entry_: cannot open dir at (%" B_PRIu32 ", %"
692 			B_PRIu32 ")\n", dir->cluster, *ns);
814 create_dir_entry(nspace *vol, vnode *dir, vnode *node, const char *name,
828 	error = findfile_nocase(vol, dir, name, NULL, NULL);
831 			dir->vnid));
868 			error = find_short_name(vol, dir, nshort);
875 			} while ((error = find_short_name(vol, dir, nshort)) == B_OK && ++iter < 10);
887 			} while ((error = find_short_name(vol, dir, nshort)) == B_OK);
906 	return _create_dir_entry_(vol, dir, &info, (char *)nshort,
1039 	vnode	*dir = (vnode *)_dir->private_node;
1045 	DPRINTF(0, ("dosfs_walk: find %" B_PRIdINO "/%s\n", dir->vnid, file));
1047 	result = findfile_case(vol, dir, file, _vnid, &vnode);
1126 	vnode		*dir = (vnode *)_dir->private_node;
1133 		dir->vnid, cookie->current_index));
1136 	if (dir->vnid == vol->root_vnode.vnid) {
1154 	if (diri_init(vol, dir->cluster, cookie->current_index, &diri) == NULL) {
1162 	result = get_next_dirent(vol, dir, &diri, &entry->d_ino, entry->d_name,
1167 	if (dir->vnid == vol->root_vnode.vnid)