54 static int get_default_compressor(struct ubifs_info *c)  in get_default_compressor()  argument
56 	if (ubifs_compr_present(c, UBIFS_COMPR_LZO))  in get_default_compressor()
59 	if (ubifs_compr_present(c, UBIFS_COMPR_ZLIB))  in get_default_compressor()
72 static int create_default_filesystem(struct ubifs_info *c)  in create_default_filesystem()  argument
93 	c->key_len = UBIFS_SK_LEN;  in create_default_filesystem()
99 	if (c->leb_cnt < 0x7FFFFFFF / DEFAULT_JNL_PERCENT)  in create_default_filesystem()
101 		jnl_lebs = c->leb_cnt * DEFAULT_JNL_PERCENT / 100;  in create_default_filesystem()
103 		jnl_lebs = (c->leb_cnt / 100) * DEFAULT_JNL_PERCENT;  in create_default_filesystem()
107 	if (jnl_lebs * c->leb_size > DEFAULT_MAX_JNL)  in create_default_filesystem()
108 		jnl_lebs = DEFAULT_MAX_JNL / c->leb_size;  in create_default_filesystem()
116 	tmp = 2 * (c->ref_node_alsz * jnl_lebs) + c->leb_size - 1;  in create_default_filesystem()
117 	log_lebs = tmp / c->leb_size;  in create_default_filesystem()
120 	if (c->leb_cnt - min_leb_cnt > 8) {  in create_default_filesystem()
137 	if (c->leb_cnt - min_leb_cnt > 1)  in create_default_filesystem()
145 	main_lebs = c->leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS - log_lebs;  in create_default_filesystem()
149 	c->lsave_cnt = DEFAULT_LSAVE_CNT;  in create_default_filesystem()
150 	c->max_leb_cnt = c->leb_cnt;  in create_default_filesystem()
151 	err = ubifs_create_dflt_lpt(c, &main_lebs, lpt_first, &lpt_lebs,  in create_default_filesystem()
159 	main_first = c->leb_cnt - main_lebs;  in create_default_filesystem()
161 	sup = kzalloc(ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size), GFP_KERNEL);  in create_default_filesystem()
162 	mst = kzalloc(c->mst_node_alsz, GFP_KERNEL);  in create_default_filesystem()
163 	idx_node_size = ubifs_idx_node_sz(c, 1);  in create_default_filesystem()
164 	idx = kzalloc(ALIGN(tmp, c->min_io_size), GFP_KERNEL);  in create_default_filesystem()
165 	ino = kzalloc(ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size), GFP_KERNEL);  in create_default_filesystem()
166 	cs = kzalloc(ALIGN(UBIFS_CS_NODE_SZ, c->min_io_size), GFP_KERNEL);  in create_default_filesystem()
175 	tmp64 = (long long)max_buds * c->leb_size;  in create_default_filesystem()
180 	if (ubifs_authenticated(c)) {  in create_default_filesystem()
182 		sup->hash_algo = cpu_to_le16(c->auth_hash_algo);  in create_default_filesystem()
183 		err = ubifs_hmac_wkm(c, sup->hmac_wkm);  in create_default_filesystem()
193 	sup->min_io_size   = cpu_to_le32(c->min_io_size);  in create_default_filesystem()
194 	sup->leb_size      = cpu_to_le32(c->leb_size);  in create_default_filesystem()
195 	sup->leb_cnt       = cpu_to_le32(c->leb_cnt);  in create_default_filesystem()
196 	sup->max_leb_cnt   = cpu_to_le32(c->max_leb_cnt);  in create_default_filesystem()
203 	sup->lsave_cnt     = cpu_to_le32(c->lsave_cnt);  in create_default_filesystem()
206 	if (c->mount_opts.override_compr)  in create_default_filesystem()
207 		sup->default_compr = cpu_to_le16(c->mount_opts.compr_type);  in create_default_filesystem()
209 		sup->default_compr = cpu_to_le16(get_default_compressor(c));  in create_default_filesystem()
213 	main_bytes = (long long)main_lebs * c->leb_size;  in create_default_filesystem()
230 	tmp = ubifs_idx_node_sz(c, 1);  in create_default_filesystem()
234 	mst->ihead_offs   = cpu_to_le32(ALIGN(tmp, c->min_io_size));  in create_default_filesystem()
236 	mst->lpt_lnum     = cpu_to_le32(c->lpt_lnum);  in create_default_filesystem()
237 	mst->lpt_offs     = cpu_to_le32(c->lpt_offs);  in create_default_filesystem()
238 	mst->nhead_lnum   = cpu_to_le32(c->nhead_lnum);  in create_default_filesystem()
239 	mst->nhead_offs   = cpu_to_le32(c->nhead_offs);  in create_default_filesystem()
240 	mst->ltab_lnum    = cpu_to_le32(c->ltab_lnum);  in create_default_filesystem()
241 	mst->ltab_offs    = cpu_to_le32(c->ltab_offs);  in create_default_filesystem()
242 	mst->lsave_lnum   = cpu_to_le32(c->lsave_lnum);  in create_default_filesystem()
243 	mst->lsave_offs   = cpu_to_le32(c->lsave_offs);  in create_default_filesystem()
247 	mst->leb_cnt      = cpu_to_le32(c->leb_cnt);  in create_default_filesystem()
248 	ubifs_copy_hash(c, hash_lpt, mst->hash_lpt);  in create_default_filesystem()
252 	tmp64 -= ALIGN(ubifs_idx_node_sz(c, 1), c->min_io_size);  in create_default_filesystem()
253 	tmp64 -= ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size);  in create_default_filesystem()
256 	tmp64 = ALIGN(ubifs_idx_node_sz(c, 1), c->min_io_size);  in create_default_filesystem()
257 	ino_waste = ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size) -  in create_default_filesystem()
260 	tmp64 -= ALIGN(ubifs_idx_node_sz(c, 1), 8);  in create_default_filesystem()
264 	tmp64 = ((long long)(c->main_lebs - 1) * c->dark_wm);  in create_default_filesystem()
273 	c->key_fmt = UBIFS_SIMPLE_KEY_FMT;  in create_default_filesystem()
274 	c->key_hash = key_r5_hash;  in create_default_filesystem()
278 	ino_key_init(c, &key, UBIFS_ROOT_INO);  in create_default_filesystem()
279 	br = ubifs_idx_branch(c, idx, 0);  in create_default_filesystem()
280 	key_write_idx(c, &key, &br->key);  in create_default_filesystem()
289 	ino_key_init_flash(c, &ino->key, UBIFS_ROOT_INO);  in create_default_filesystem()
291 	ino->creat_sqnum = cpu_to_le64(++c->max_sqnum);  in create_default_filesystem()
321 	err = ubifs_write_node_hmac(c, sup, UBIFS_SB_NODE_SZ, 0, 0,  in create_default_filesystem()
326 	err = ubifs_write_node(c, ino, UBIFS_INO_NODE_SZ,  in create_default_filesystem()
331 	ubifs_node_calc_hash(c, ino, hash);  in create_default_filesystem()
332 	ubifs_copy_hash(c, hash, ubifs_branch_hash(c, br));  in create_default_filesystem()
334 	err = ubifs_write_node(c, idx, idx_node_size, main_first + DEFAULT_IDX_LEB, 0);  in create_default_filesystem()
338 	ubifs_node_calc_hash(c, idx, hash);  in create_default_filesystem()
339 	ubifs_copy_hash(c, hash, mst->hash_root_idx);  in create_default_filesystem()
341 	err = ubifs_write_node_hmac(c, mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM, 0,  in create_default_filesystem()
346 	err = ubifs_write_node_hmac(c, mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM + 1,  in create_default_filesystem()
351 	err = ubifs_write_node(c, cs, UBIFS_CS_NODE_SZ, UBIFS_LOG_LNUM, 0);  in create_default_filesystem()
355 	ubifs_msg(c, "default file-system created");  in create_default_filesystem()
378 static int validate_sb(struct ubifs_info *c, struct ubifs_sb_node *sup)  in validate_sb()  argument
383 	if (!c->key_hash) {  in validate_sb()
393 	if (le32_to_cpu(sup->min_io_size) != c->min_io_size) {  in validate_sb()
394 		ubifs_err(c, "min. I/O unit mismatch: %d in superblock, %d real",  in validate_sb()
395 			  le32_to_cpu(sup->min_io_size), c->min_io_size);  in validate_sb()
399 	if (le32_to_cpu(sup->leb_size) != c->leb_size) {  in validate_sb()
400 		ubifs_err(c, "LEB size mismatch: %d in superblock, %d real",  in validate_sb()
401 			  le32_to_cpu(sup->leb_size), c->leb_size);  in validate_sb()
405 	if (c->log_lebs < UBIFS_MIN_LOG_LEBS ||  in validate_sb()
406 	    c->lpt_lebs < UBIFS_MIN_LPT_LEBS ||  in validate_sb()
407 	    c->orph_lebs < UBIFS_MIN_ORPH_LEBS ||  in validate_sb()
408 	    c->main_lebs < UBIFS_MIN_MAIN_LEBS) {  in validate_sb()
418 	min_leb_cnt = UBIFS_SB_LEBS + UBIFS_MST_LEBS + c->log_lebs;  in validate_sb()
419 	min_leb_cnt += c->lpt_lebs + c->orph_lebs + c->jhead_cnt + 6;  in validate_sb()
421 	if (c->leb_cnt < min_leb_cnt || c->leb_cnt > c->vi.size) {  in validate_sb()
422 		ubifs_err(c, "bad LEB count: %d in superblock, %d on UBI volume, %d minimum required",  in validate_sb()
423 			  c->leb_cnt, c->vi.size, min_leb_cnt);  in validate_sb()
427 	if (c->max_leb_cnt < c->leb_cnt) {  in validate_sb()
428 		ubifs_err(c, "max. LEB count %d less than LEB count %d",  in validate_sb()
429 			  c->max_leb_cnt, c->leb_cnt);  in validate_sb()
433 	if (c->main_lebs < UBIFS_MIN_MAIN_LEBS) {  in validate_sb()
434 		ubifs_err(c, "too few main LEBs count %d, must be at least %d",  in validate_sb()
435 			  c->main_lebs, UBIFS_MIN_MAIN_LEBS);  in validate_sb()
439 	max_bytes = (long long)c->leb_size * UBIFS_MIN_BUD_LEBS;  in validate_sb()
440 	if (c->max_bud_bytes < max_bytes) {  in validate_sb()
441 		ubifs_err(c, "too small journal (%lld bytes), must be at least %lld bytes",  in validate_sb()
442 			  c->max_bud_bytes, max_bytes);  in validate_sb()
446 	max_bytes = (long long)c->leb_size * c->main_lebs;  in validate_sb()
447 	if (c->max_bud_bytes > max_bytes) {  in validate_sb()
448 		ubifs_err(c, "too large journal size (%lld bytes), only %lld bytes available in the main area",  in validate_sb()
449 			  c->max_bud_bytes, max_bytes);  in validate_sb()
453 	if (c->jhead_cnt < NONDATA_JHEADS_CNT + 1 ||  in validate_sb()
454 	    c->jhead_cnt > NONDATA_JHEADS_CNT + UBIFS_MAX_JHEADS) {  in validate_sb()
459 	if (c->fanout < UBIFS_MIN_FANOUT ||  in validate_sb()
460 	    ubifs_idx_node_sz(c, c->fanout) > c->leb_size) {  in validate_sb()
465 	if (c->lsave_cnt < 0 || (c->lsave_cnt > DEFAULT_LSAVE_CNT &&  in validate_sb()
466 	    c->lsave_cnt > c->max_leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS -  in validate_sb()
467 	    c->log_lebs - c->lpt_lebs - c->orph_lebs)) {  in validate_sb()
472 	if (UBIFS_SB_LEBS + UBIFS_MST_LEBS + c->log_lebs + c->lpt_lebs +  in validate_sb()
473 	    c->orph_lebs + c->main_lebs != c->leb_cnt) {  in validate_sb()
478 	if (c->default_compr >= UBIFS_COMPR_TYPES_CNT) {  in validate_sb()
483 	if (c->rp_size < 0 || max_bytes < c->rp_size) {  in validate_sb()
494 	if (!c->double_hash && c->fmt_version >= 5) {  in validate_sb()
499 	if (c->encrypted && c->fmt_version < 5) {  in validate_sb()
507 	ubifs_err(c, "bad superblock, error %d", err);  in validate_sb()
508 	ubifs_dump_node(c, sup);  in validate_sb()
520 static struct ubifs_sb_node *ubifs_read_sb_node(struct ubifs_info *c)  in ubifs_read_sb_node()  argument
525 	sup = kmalloc(ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size), GFP_NOFS);  in ubifs_read_sb_node()
529 	err = ubifs_read_node(c, sup, UBIFS_SB_NODE, UBIFS_SB_NODE_SZ,  in ubifs_read_sb_node()
539 static int authenticate_sb_node(struct ubifs_info *c,  in authenticate_sb_node()  argument
548 	if (c->authenticated && !authenticated) {  in authenticate_sb_node()
549 		ubifs_err(c, "authenticated FS forced, but found FS without authentication");  in authenticate_sb_node()
553 	if (!c->authenticated && authenticated) {  in authenticate_sb_node()
554 		ubifs_err(c, "authenticated FS found, but no key given");  in authenticate_sb_node()
558 	ubifs_msg(c, "Mounting in %sauthenticated mode",  in authenticate_sb_node()
559 		  c->authenticated ? "" : "un");  in authenticate_sb_node()
561 	if (!c->authenticated)  in authenticate_sb_node()
569 		ubifs_err(c, "superblock uses unknown hash algo %d",  in authenticate_sb_node()
574 	if (strcmp(hash_algo_name[hash_algo], c->auth_hash_name)) {  in authenticate_sb_node()
575 		ubifs_err(c, "This filesystem uses %s for hashing,"  in authenticate_sb_node()
577 			     c->auth_hash_name);  in authenticate_sb_node()
586 	if (ubifs_hmac_zero(c, sup->hmac)) {  in authenticate_sb_node()
587 		err = ubifs_sb_verify_signature(c, sup);  in authenticate_sb_node()
589 		err = ubifs_hmac_wkm(c, hmac_wkm);  in authenticate_sb_node()
592 		if (ubifs_check_hmac(c, hmac_wkm, sup->hmac_wkm)) {  in authenticate_sb_node()
593 			ubifs_err(c, "provided key does not fit");  in authenticate_sb_node()
596 		err = ubifs_node_verify_hmac(c, sup, sizeof(*sup),  in authenticate_sb_node()
602 		ubifs_err(c, "Failed to authenticate superblock: %d", err);  in authenticate_sb_node()
614 int ubifs_write_sb_node(struct ubifs_info *c, struct ubifs_sb_node *sup)  in ubifs_write_sb_node()  argument
616 	int len = ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size);  in ubifs_write_sb_node()
619 	err = ubifs_prepare_node_hmac(c, sup, UBIFS_SB_NODE_SZ,  in ubifs_write_sb_node()
624 	return ubifs_leb_change(c, UBIFS_SB_LNUM, sup, len);  in ubifs_write_sb_node()
635 int ubifs_read_superblock(struct ubifs_info *c)  in ubifs_read_superblock()  argument
640 	if (c->empty) {  in ubifs_read_superblock()
641 		err = create_default_filesystem(c);  in ubifs_read_superblock()
646 	sup = ubifs_read_sb_node(c);  in ubifs_read_superblock()
650 	c->sup_node = sup;  in ubifs_read_superblock()
652 	c->fmt_version = le32_to_cpu(sup->fmt_version);  in ubifs_read_superblock()
653 	c->ro_compat_version = le32_to_cpu(sup->ro_compat_version);  in ubifs_read_superblock()
659 	if (c->fmt_version > UBIFS_FORMAT_VERSION) {  in ubifs_read_superblock()
660 		ubifs_assert(c, !c->ro_media || c->ro_mount);  in ubifs_read_superblock()
661 		if (!c->ro_mount ||  in ubifs_read_superblock()
662 		    c->ro_compat_version > UBIFS_RO_COMPAT_VERSION) {  in ubifs_read_superblock()
663 …ubifs_err(c, "on-flash format version is w%d/r%d, but software only supports up to version w%d/r%d…  in ubifs_read_superblock()
664 				  c->fmt_version, c->ro_compat_version,  in ubifs_read_superblock()
667 			if (c->ro_compat_version <= UBIFS_RO_COMPAT_VERSION) {  in ubifs_read_superblock()
668 				ubifs_msg(c, "only R/O mounting is possible");  in ubifs_read_superblock()
680 		c->rw_incompat = 1;  in ubifs_read_superblock()
683 	if (c->fmt_version < 3) {  in ubifs_read_superblock()
684 		ubifs_err(c, "on-flash format version %d is not supported",  in ubifs_read_superblock()
685 			  c->fmt_version);  in ubifs_read_superblock()
692 		c->key_hash = key_r5_hash;  in ubifs_read_superblock()
693 		c->key_hash_type = UBIFS_KEY_HASH_R5;  in ubifs_read_superblock()
697 		c->key_hash = key_test_hash;  in ubifs_read_superblock()
698 		c->key_hash_type = UBIFS_KEY_HASH_TEST;  in ubifs_read_superblock()
702 	c->key_fmt = sup->key_fmt;  in ubifs_read_superblock()
704 	switch (c->key_fmt) {  in ubifs_read_superblock()
706 		c->key_len = UBIFS_SK_LEN;  in ubifs_read_superblock()
709 		ubifs_err(c, "unsupported key format");  in ubifs_read_superblock()
714 	c->leb_cnt       = le32_to_cpu(sup->leb_cnt);  in ubifs_read_superblock()
715 	c->max_leb_cnt   = le32_to_cpu(sup->max_leb_cnt);  in ubifs_read_superblock()
716 	c->max_bud_bytes = le64_to_cpu(sup->max_bud_bytes);  in ubifs_read_superblock()
717 	c->log_lebs      = le32_to_cpu(sup->log_lebs);  in ubifs_read_superblock()
718 	c->lpt_lebs      = le32_to_cpu(sup->lpt_lebs);  in ubifs_read_superblock()
719 	c->orph_lebs     = le32_to_cpu(sup->orph_lebs);  in ubifs_read_superblock()
720 	c->jhead_cnt     = le32_to_cpu(sup->jhead_cnt) + NONDATA_JHEADS_CNT;  in ubifs_read_superblock()
721 	c->fanout        = le32_to_cpu(sup->fanout);  in ubifs_read_superblock()
722 	c->lsave_cnt     = le32_to_cpu(sup->lsave_cnt);  in ubifs_read_superblock()
723 	c->rp_size       = le64_to_cpu(sup->rp_size);  in ubifs_read_superblock()
724 	c->rp_uid        = make_kuid(&init_user_ns, le32_to_cpu(sup->rp_uid));  in ubifs_read_superblock()
725 	c->rp_gid        = make_kgid(&init_user_ns, le32_to_cpu(sup->rp_gid));  in ubifs_read_superblock()
727 	if (!c->mount_opts.override_compr)  in ubifs_read_superblock()
728 		c->default_compr = le16_to_cpu(sup->default_compr);  in ubifs_read_superblock()
730 	c->vfs_sb->s_time_gran = le32_to_cpu(sup->time_gran);  in ubifs_read_superblock()
731 	memcpy(&c->uuid, &sup->uuid, 16);  in ubifs_read_superblock()
732 	c->big_lpt = !!(sup_flags & UBIFS_FLG_BIGLPT);  in ubifs_read_superblock()
733 	c->space_fixup = !!(sup_flags & UBIFS_FLG_SPACE_FIXUP);  in ubifs_read_superblock()
734 	c->double_hash = !!(sup_flags & UBIFS_FLG_DOUBLE_HASH);  in ubifs_read_superblock()
735 	c->encrypted = !!(sup_flags & UBIFS_FLG_ENCRYPTION);  in ubifs_read_superblock()
737 	err = authenticate_sb_node(c, sup);  in ubifs_read_superblock()
742 		ubifs_err(c, "Unknown feature flags found: %#x",  in ubifs_read_superblock()
748 	if (!IS_ENABLED(CONFIG_FS_ENCRYPTION) && c->encrypted) {  in ubifs_read_superblock()
749 		ubifs_err(c, "file system contains encrypted files but UBIFS"  in ubifs_read_superblock()
756 	if (c->leb_cnt < c->vi.size && c->leb_cnt < c->max_leb_cnt) {  in ubifs_read_superblock()
757 		int old_leb_cnt = c->leb_cnt;  in ubifs_read_superblock()
759 		c->leb_cnt = min_t(int, c->max_leb_cnt, c->vi.size);  in ubifs_read_superblock()
760 		sup->leb_cnt = cpu_to_le32(c->leb_cnt);  in ubifs_read_superblock()
762 		c->superblock_need_write = 1;  in ubifs_read_superblock()
765 			old_leb_cnt, c->leb_cnt);  in ubifs_read_superblock()
768 	c->log_bytes = (long long)c->log_lebs * c->leb_size;  in ubifs_read_superblock()
769 	c->log_last = UBIFS_LOG_LNUM + c->log_lebs - 1;  in ubifs_read_superblock()
770 	c->lpt_first = UBIFS_LOG_LNUM + c->log_lebs;  in ubifs_read_superblock()
771 	c->lpt_last = c->lpt_first + c->lpt_lebs - 1;  in ubifs_read_superblock()
772 	c->orph_first = c->lpt_last + 1;  in ubifs_read_superblock()
773 	c->orph_last = c->orph_first + c->orph_lebs - 1;  in ubifs_read_superblock()
774 	c->main_lebs = c->leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS;  in ubifs_read_superblock()
775 	c->main_lebs -= c->log_lebs + c->lpt_lebs + c->orph_lebs;  in ubifs_read_superblock()
776 	c->main_first = c->leb_cnt - c->main_lebs;  in ubifs_read_superblock()
778 	err = validate_sb(c, sup);  in ubifs_read_superblock()
794 static int fixup_leb(struct ubifs_info *c, int lnum, int len)  in fixup_leb()  argument
798 	ubifs_assert(c, len >= 0);  in fixup_leb()
799 	ubifs_assert(c, len % c->min_io_size == 0);  in fixup_leb()
800 	ubifs_assert(c, len < c->leb_size);  in fixup_leb()
804 		return ubifs_leb_unmap(c, lnum);  in fixup_leb()
808 	err = ubifs_leb_read(c, lnum, c->sbuf, 0, len, 1);  in fixup_leb()
812 	return ubifs_leb_change(c, lnum, c->sbuf, len);  in fixup_leb()
822 static int fixup_free_space(struct ubifs_info *c)  in fixup_free_space()  argument
827 	ubifs_get_lprops(c);  in fixup_free_space()
831 		err = fixup_leb(c, lnum, c->mst_offs + c->mst_node_alsz);  in fixup_free_space()
837 	lnum = ubifs_next_log_lnum(c, c->lhead_lnum);  in fixup_free_space()
838 	while (lnum != c->ltail_lnum) {  in fixup_free_space()
839 		err = fixup_leb(c, lnum, 0);  in fixup_free_space()
842 		lnum = ubifs_next_log_lnum(c, lnum);  in fixup_free_space()
849 	err = fixup_leb(c, c->lhead_lnum,  in fixup_free_space()
850 			ALIGN(UBIFS_CS_NODE_SZ, c->min_io_size));  in fixup_free_space()
855 	for (lnum = c->lpt_first; lnum <= c->lpt_last; lnum++) {  in fixup_free_space()
856 		int free = c->ltab[lnum - c->lpt_first].free;  in fixup_free_space()
859 			err = fixup_leb(c, lnum, c->leb_size - free);  in fixup_free_space()
866 	for (lnum = c->orph_first; lnum <= c->orph_last; lnum++) {  in fixup_free_space()
867 		err = fixup_leb(c, lnum, 0);  in fixup_free_space()
873 	for (lnum = c->main_first; lnum < c->leb_cnt; lnum++) {  in fixup_free_space()
874 		lprops = ubifs_lpt_lookup(c, lnum);  in fixup_free_space()
881 			err = fixup_leb(c, lnum, c->leb_size - lprops->free);  in fixup_free_space()
888 	ubifs_release_lprops(c);  in fixup_free_space()
905 int ubifs_fixup_free_space(struct ubifs_info *c)  in ubifs_fixup_free_space()  argument
908 	struct ubifs_sb_node *sup = c->sup_node;  in ubifs_fixup_free_space()
910 	ubifs_assert(c, c->space_fixup);  in ubifs_fixup_free_space()
911 	ubifs_assert(c, !c->ro_mount);  in ubifs_fixup_free_space()
913 	ubifs_msg(c, "start fixing up free space");  in ubifs_fixup_free_space()
915 	err = fixup_free_space(c);  in ubifs_fixup_free_space()
920 	c->space_fixup = 0;  in ubifs_fixup_free_space()
923 	c->superblock_need_write = 1;  in ubifs_fixup_free_space()
925 	ubifs_msg(c, "free space fixup complete");  in ubifs_fixup_free_space()
929 int ubifs_enable_encryption(struct ubifs_info *c)  in ubifs_enable_encryption()  argument
932 	struct ubifs_sb_node *sup = c->sup_node;  in ubifs_enable_encryption()
937 	if (c->encrypted)  in ubifs_enable_encryption()
940 	if (c->ro_mount || c->ro_media)  in ubifs_enable_encryption()
943 	if (c->fmt_version < 5) {  in ubifs_enable_encryption()
944 		ubifs_err(c, "on-flash format version 5 is needed for encryption");  in ubifs_enable_encryption()
950 	err = ubifs_write_sb_node(c, sup);  in ubifs_enable_encryption()
952 		c->encrypted = 1;  in ubifs_enable_encryption()