77 	struct ubifs_sb_node *sup;  in create_default_filesystem()  local
163 	sup = kzalloc(ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size), GFP_KERNEL);  in create_default_filesystem()
170 	if (!sup || !mst || !idx || !ino || !cs) {  in create_default_filesystem()
185 		sup->hash_algo = cpu_to_le16(c->auth_hash_algo);  in create_default_filesystem()
186 		err = ubifs_hmac_wkm(c, sup->hmac_wkm);  in create_default_filesystem()
190 		sup->hash_algo = cpu_to_le16(0xffff);  in create_default_filesystem()
193 	sup->ch.node_type  = UBIFS_SB_NODE;  in create_default_filesystem()
194 	sup->key_hash      = UBIFS_KEY_HASH_R5;  in create_default_filesystem()
195 	sup->flags         = cpu_to_le32(sup_flags);  in create_default_filesystem()
196 	sup->min_io_size   = cpu_to_le32(c->min_io_size);  in create_default_filesystem()
197 	sup->leb_size      = cpu_to_le32(c->leb_size);  in create_default_filesystem()
198 	sup->leb_cnt       = cpu_to_le32(c->leb_cnt);  in create_default_filesystem()
199 	sup->max_leb_cnt   = cpu_to_le32(c->max_leb_cnt);  in create_default_filesystem()
200 	sup->max_bud_bytes = cpu_to_le64(tmp64);  in create_default_filesystem()
201 	sup->log_lebs      = cpu_to_le32(log_lebs);  in create_default_filesystem()
202 	sup->lpt_lebs      = cpu_to_le32(lpt_lebs);  in create_default_filesystem()
203 	sup->orph_lebs     = cpu_to_le32(orph_lebs);  in create_default_filesystem()
204 	sup->jhead_cnt     = cpu_to_le32(DEFAULT_JHEADS_CNT);  in create_default_filesystem()
205 	sup->fanout        = cpu_to_le32(DEFAULT_FANOUT);  in create_default_filesystem()
206 	sup->lsave_cnt     = cpu_to_le32(c->lsave_cnt);  in create_default_filesystem()
207 	sup->fmt_version   = cpu_to_le32(ubifs_default_version);  in create_default_filesystem()
208 	sup->time_gran     = cpu_to_le32(DEFAULT_TIME_GRAN);  in create_default_filesystem()
210 		sup->default_compr = cpu_to_le16(c->mount_opts.compr_type);  in create_default_filesystem()
212 		sup->default_compr = cpu_to_le16(get_default_compressor(c));  in create_default_filesystem()
214 	generate_random_uuid(sup->uuid);  in create_default_filesystem()
220 	sup->rp_size = cpu_to_le64(tmp64);  in create_default_filesystem()
221 	sup->ro_compat_version = cpu_to_le32(UBIFS_RO_COMPAT_VERSION);  in create_default_filesystem()
322 	err = ubifs_write_node_hmac(c, sup, UBIFS_SB_NODE_SZ, 0, 0,  in create_default_filesystem()
360 	kfree(sup);  in create_default_filesystem()
379 static int validate_sb(struct ubifs_info *c, struct ubifs_sb_node *sup)  in validate_sb()  argument
389 	if (sup->key_fmt != UBIFS_SIMPLE_KEY_FMT) {  in validate_sb()
394 	if (le32_to_cpu(sup->min_io_size) != c->min_io_size) {  in validate_sb()
396 			  le32_to_cpu(sup->min_io_size), c->min_io_size);  in validate_sb()
400 	if (le32_to_cpu(sup->leb_size) != c->leb_size) {  in validate_sb()
402 			  le32_to_cpu(sup->leb_size), c->leb_size);  in validate_sb()
489 	if (le32_to_cpu(sup->time_gran) > 1000000000 ||  in validate_sb()
490 	    le32_to_cpu(sup->time_gran) < 1) {  in validate_sb()
509 	ubifs_dump_node(c, sup, ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size));  in validate_sb()
523 	struct ubifs_sb_node *sup;  in ubifs_read_sb_node()  local
526 	sup = kmalloc(ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size), GFP_NOFS);  in ubifs_read_sb_node()
527 	if (!sup)  in ubifs_read_sb_node()
530 	err = ubifs_read_node(c, sup, UBIFS_SB_NODE, UBIFS_SB_NODE_SZ,  in ubifs_read_sb_node()
533 		kfree(sup);  in ubifs_read_sb_node()
537 	return sup;  in ubifs_read_sb_node()
541 				const struct ubifs_sb_node *sup)  in authenticate_sb_node()  argument
543 	unsigned int sup_flags = le32_to_cpu(sup->flags);  in authenticate_sb_node()
568 	hash_algo = le16_to_cpu(sup->hash_algo);  in authenticate_sb_node()
587 	if (ubifs_hmac_zero(c, sup->hmac)) {  in authenticate_sb_node()
588 		err = ubifs_sb_verify_signature(c, sup);  in authenticate_sb_node()
593 		if (ubifs_check_hmac(c, hmac_wkm, sup->hmac_wkm)) {  in authenticate_sb_node()
597 		err = ubifs_node_verify_hmac(c, sup, sizeof(*sup),  in authenticate_sb_node()
615 int ubifs_write_sb_node(struct ubifs_info *c, struct ubifs_sb_node *sup)  in ubifs_write_sb_node()  argument
620 	err = ubifs_prepare_node_hmac(c, sup, UBIFS_SB_NODE_SZ,  in ubifs_write_sb_node()
625 	return ubifs_leb_change(c, UBIFS_SB_LNUM, sup, len);  in ubifs_write_sb_node()
639 	struct ubifs_sb_node *sup;  in ubifs_read_superblock()  local
647 	sup = ubifs_read_sb_node(c);  in ubifs_read_superblock()
648 	if (IS_ERR(sup))  in ubifs_read_superblock()
649 		return PTR_ERR(sup);  in ubifs_read_superblock()
651 	c->sup_node = sup;  in ubifs_read_superblock()
653 	c->fmt_version = le32_to_cpu(sup->fmt_version);  in ubifs_read_superblock()
654 	c->ro_compat_version = le32_to_cpu(sup->ro_compat_version);  in ubifs_read_superblock()
691 	switch (sup->key_hash) {  in ubifs_read_superblock()
703 	c->key_fmt = sup->key_fmt;  in ubifs_read_superblock()
715 	c->leb_cnt       = le32_to_cpu(sup->leb_cnt);  in ubifs_read_superblock()
716 	c->max_leb_cnt   = le32_to_cpu(sup->max_leb_cnt);  in ubifs_read_superblock()
717 	c->max_bud_bytes = le64_to_cpu(sup->max_bud_bytes);  in ubifs_read_superblock()
718 	c->log_lebs      = le32_to_cpu(sup->log_lebs);  in ubifs_read_superblock()
719 	c->lpt_lebs      = le32_to_cpu(sup->lpt_lebs);  in ubifs_read_superblock()
720 	c->orph_lebs     = le32_to_cpu(sup->orph_lebs);  in ubifs_read_superblock()
721 	c->jhead_cnt     = le32_to_cpu(sup->jhead_cnt) + NONDATA_JHEADS_CNT;  in ubifs_read_superblock()
722 	c->fanout        = le32_to_cpu(sup->fanout);  in ubifs_read_superblock()
723 	c->lsave_cnt     = le32_to_cpu(sup->lsave_cnt);  in ubifs_read_superblock()
724 	c->rp_size       = le64_to_cpu(sup->rp_size);  in ubifs_read_superblock()
725 	c->rp_uid        = make_kuid(&init_user_ns, le32_to_cpu(sup->rp_uid));  in ubifs_read_superblock()
726 	c->rp_gid        = make_kgid(&init_user_ns, le32_to_cpu(sup->rp_gid));  in ubifs_read_superblock()
727 	sup_flags        = le32_to_cpu(sup->flags);  in ubifs_read_superblock()
729 		c->default_compr = le16_to_cpu(sup->default_compr);  in ubifs_read_superblock()
731 	c->vfs_sb->s_time_gran = le32_to_cpu(sup->time_gran);  in ubifs_read_superblock()
732 	memcpy(&c->uuid, &sup->uuid, 16);  in ubifs_read_superblock()
738 	err = authenticate_sb_node(c, sup);  in ubifs_read_superblock()
761 		sup->leb_cnt = cpu_to_le32(c->leb_cnt);  in ubifs_read_superblock()
779 	err = validate_sb(c, sup);  in ubifs_read_superblock()
909 	struct ubifs_sb_node *sup = c->sup_node;  in ubifs_fixup_free_space()  local
922 	sup->flags &= cpu_to_le32(~UBIFS_FLG_SPACE_FIXUP);  in ubifs_fixup_free_space()
933 	struct ubifs_sb_node *sup = c->sup_node;  in ubifs_enable_encryption()  local
949 	sup->flags |= cpu_to_le32(UBIFS_FLG_ENCRYPTION);  in ubifs_enable_encryption()
951 	err = ubifs_write_sb_node(c, sup);  in ubifs_enable_encryption()