42 	struct erofs_super_block *dsb = sbdata + EROFS_SUPER_OFFSET;  in erofs_superblock_csum_verify()  local
48 			sizeof(dsb->checksum);  in erofs_superblock_csum_verify()
51 	crc = crc32c(0x5045B54A, (&dsb->checksum) + 1, len);  in erofs_superblock_csum_verify()
52 	if (crc == le32_to_cpu(dsb->checksum))  in erofs_superblock_csum_verify()
55 		  crc, le32_to_cpu(dsb->checksum));  in erofs_superblock_csum_verify()
126 			      struct erofs_super_block *dsb)  in z_erofs_parse_cfgs()  argument
128 	if (!dsb->u1.available_compr_algs)  in z_erofs_parse_cfgs()
197 			      struct erofs_super_block *dsb)  in erofs_scan_devices()  argument
210 		ondisk_extradevs = le16_to_cpu(dsb->extra_devices);  in erofs_scan_devices()
230 	pos = le16_to_cpu(dsb->devt_slotoff) * EROFS_DEVT_SLOT_SIZE;  in erofs_scan_devices()
267 	struct erofs_super_block *dsb;  in erofs_read_superblock()  local
277 	dsb = (struct erofs_super_block *)(data + EROFS_SUPER_OFFSET);  in erofs_read_superblock()
279 	if (le32_to_cpu(dsb->magic) != EROFS_SUPER_MAGIC_V1) {  in erofs_read_superblock()
284 	sbi->blkszbits = dsb->blkszbits;  in erofs_read_superblock()
289 	if (dsb->dirblkbits) {  in erofs_read_superblock()
290 		erofs_err(sb, "dirblkbits %u isn't supported", dsb->dirblkbits);  in erofs_read_superblock()
294 	sbi->feature_compat = le32_to_cpu(dsb->feature_compat);  in erofs_read_superblock()
302 	sbi->feature_incompat = le32_to_cpu(dsb->feature_incompat);  in erofs_read_superblock()
309 	sbi->sb_size = 128 + dsb->sb_extslots * EROFS_SB_EXTSLOT_SIZE;  in erofs_read_superblock()
315 	sbi->dif0.blocks = le32_to_cpu(dsb->blocks_lo);  in erofs_read_superblock()
316 	sbi->meta_blkaddr = le32_to_cpu(dsb->meta_blkaddr);  in erofs_read_superblock()
318 	sbi->xattr_blkaddr = le32_to_cpu(dsb->xattr_blkaddr);  in erofs_read_superblock()
319 	sbi->xattr_prefix_start = le32_to_cpu(dsb->xattr_prefix_start);  in erofs_read_superblock()
320 	sbi->xattr_prefix_count = dsb->xattr_prefix_count;  in erofs_read_superblock()
321 	sbi->xattr_filter_reserved = dsb->xattr_filter_reserved;  in erofs_read_superblock()
324 	if (erofs_sb_has_48bit(sbi) && dsb->rootnid_8b) {  in erofs_read_superblock()
325 		sbi->root_nid = le64_to_cpu(dsb->rootnid_8b);  in erofs_read_superblock()
327 				((u64)le16_to_cpu(dsb->rb.blocks_hi) << 32);  in erofs_read_superblock()
329 		sbi->root_nid = le16_to_cpu(dsb->rb.rootnid_2b);  in erofs_read_superblock()
331 	sbi->packed_nid = le64_to_cpu(dsb->packed_nid);  in erofs_read_superblock()
336 		sbi->metabox_nid = le64_to_cpu(dsb->metabox_nid);  in erofs_read_superblock()
340 	sbi->inos = le64_to_cpu(dsb->inos);  in erofs_read_superblock()
342 	sbi->epoch = (s64)le64_to_cpu(dsb->epoch);  in erofs_read_superblock()
343 	sbi->fixed_nsec = le32_to_cpu(dsb->fixed_nsec);  in erofs_read_superblock()
344 	super_set_uuid(sb, (void *)dsb->uuid, sizeof(dsb->uuid));  in erofs_read_superblock()
346 	if (dsb->volume_name[0]) {  in erofs_read_superblock()
347 		sbi->volume_name = kstrndup(dsb->volume_name,  in erofs_read_superblock()
348 					    sizeof(dsb->volume_name), GFP_KERNEL);  in erofs_read_superblock()
354 	ret = z_erofs_parse_cfgs(sb, dsb);  in erofs_read_superblock()
358 	ret = erofs_scan_devices(sb, dsb);  in erofs_read_superblock()