45 					   journal_superblock_t *jsb)  in e2fsck_journal_verify_csum_type()  argument
50 	return jsb->s_checksum_type == JBD2_CRC32C_CHKSUM;  in e2fsck_journal_verify_csum_type()
53 static __u32 e2fsck_journal_sb_csum(journal_superblock_t *jsb)  in e2fsck_journal_sb_csum()  argument
57 	old_crc = jsb->s_checksum;  in e2fsck_journal_sb_csum()
58 	jsb->s_checksum = 0;  in e2fsck_journal_sb_csum()
59 	crc = ext2fs_crc32c_le(~0, (unsigned char *)jsb,  in e2fsck_journal_sb_csum()
61 	jsb->s_checksum = old_crc;  in e2fsck_journal_sb_csum()
67 					 journal_superblock_t *jsb)  in e2fsck_journal_sb_csum_verify()  argument
74 	provided = ext2fs_be32_to_cpu(jsb->s_checksum);  in e2fsck_journal_sb_csum_verify()
75 	calculated = e2fsck_journal_sb_csum(jsb);  in e2fsck_journal_sb_csum_verify()
81 					    journal_superblock_t *jsb)  in e2fsck_journal_sb_csum_set()  argument
88 	crc = e2fsck_journal_sb_csum(jsb);  in e2fsck_journal_sb_csum_set()
89 	jsb->s_checksum = ext2fs_cpu_to_be32(crc);  in e2fsck_journal_sb_csum_set()
585 	journal_superblock_t *jsb;  in e2fsck_journal_load()  local
598 	jsb = journal->j_superblock;  in e2fsck_journal_load()
600 	if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER))  in e2fsck_journal_load()
603 	switch (ntohl(jsb->s_header.h_blocktype)) {  in e2fsck_journal_load()
606 		if (jsb->s_feature_compat ||  in e2fsck_journal_load()
607 		    jsb->s_feature_incompat ||  in e2fsck_journal_load()
608 		    jsb->s_feature_ro_compat ||  in e2fsck_journal_load()
609 		    jsb->s_nr_users)  in e2fsck_journal_load()
615 		if (ntohl(jsb->s_nr_users) > 1 &&  in e2fsck_journal_load()
618 		if (ntohl(jsb->s_nr_users) > 1) {  in e2fsck_journal_load()
654 	if (!e2fsck_journal_verify_csum_type(journal, jsb) ||  in e2fsck_journal_load()
655 	    !e2fsck_journal_sb_csum_verify(journal, jsb))  in e2fsck_journal_load()
659 		journal->j_csum_seed = jbd2_chksum(journal, ~0, jsb->s_uuid,  in e2fsck_journal_load()
660 						   sizeof(jsb->s_uuid));  in e2fsck_journal_load()
665 	if (jsb->s_blocksize != htonl(journal->j_blocksize)) {  in e2fsck_journal_load()
672 	if (ntohl(jsb->s_maxlen) < journal->j_maxlen)  in e2fsck_journal_load()
673 		journal->j_maxlen = ntohl(jsb->s_maxlen);  in e2fsck_journal_load()
674 	else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) {  in e2fsck_journal_load()
681 	journal->j_tail_sequence = ntohl(jsb->s_sequence);  in e2fsck_journal_load()
683 	journal->j_tail = ntohl(jsb->s_start);  in e2fsck_journal_load()
684 	journal->j_first = ntohl(jsb->s_first);  in e2fsck_journal_load()
685 	journal->j_last = ntohl(jsb->s_maxlen);  in e2fsck_journal_load()
690 static void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb,  in e2fsck_journal_reset_super()  argument
705 	if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER) ||  in e2fsck_journal_reset_super()
706 	    jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK_V1)) {  in e2fsck_journal_reset_super()
707 		jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER);  in e2fsck_journal_reset_super()
708 		jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2);  in e2fsck_journal_reset_super()
713 	p = ((char *) jsb) + sizeof(journal_header_t);  in e2fsck_journal_reset_super()
716 	jsb->s_blocksize = htonl(ctx->fs->blocksize);  in e2fsck_journal_reset_super()
717 	jsb->s_maxlen = htonl(journal->j_maxlen);  in e2fsck_journal_reset_super()
718 	jsb->s_first = htonl(1);  in e2fsck_journal_reset_super()
728 	jsb->s_sequence = htonl(new_seq);  in e2fsck_journal_reset_super()
729 	e2fsck_journal_sb_csum_set(journal, jsb);  in e2fsck_journal_reset_super()
760 	journal_superblock_t *jsb;  in e2fsck_journal_release()  local
765 		jsb = journal->j_superblock;  in e2fsck_journal_release()
766 		jsb->s_sequence = htonl(journal->j_tail_sequence);  in e2fsck_journal_release()
768 			jsb->s_start = 0; /* this marks the journal as empty */  in e2fsck_journal_release()
769 		e2fsck_journal_sb_csum_set(journal, jsb);  in e2fsck_journal_release()