fs/jffs2/readinode.c

33 	struct jffs2_raw_node_ref *ref = tn->fn->raw;
43 	ofs = ref_offset(ref) + sizeof(struct jffs2_raw_inode);
53 				      ref_offset(ref), tn->csize, ofs);
62 		ref_offset(ref), tn->csize, tn->partial_crc, tn->data_crc, ofs - len, ofs, len);
109 			     ref_offset(ref), tn->data_crc, crc);
114 	jeb = &c->blocks[ref->flash_offset / c->sector_size];
115 	len = ref_totlen(c, jeb, ref);
120 	ref->flash_offset |= REF_PRISTINE;
567 /* Returns first valid node after 'ref'. May return 'ref' */
568 static struct jffs2_raw_node_ref *jffs2_first_valid_node(struct jffs2_raw_node_ref *ref)
570 	while (ref && ref->next_in_ino) {
571 		if (!ref_obsolete(ref))
572 			return ref;
573 		dbg_noderef("node at 0x%08x is obsoleted. Ignoring.\n", ref_offset(ref));
574 		ref = ref->next_in_ino;
586 static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref,
594 	BUG_ON(ref_obsolete(ref));
599 			     ref_offset(ref), je32_to_cpu(rd->node_crc), crc);
600 		jffs2_mark_node_obsolete(c, ref);
605 	if (ref_flags(ref) == REF_UNCHECKED) {
612 				    ref_offset(ref), rd->nsize, je32_to_cpu(rd->totlen));
613 			jffs2_mark_node_obsolete(c, ref);
617 		jeb = &c->blocks[ref->flash_offset / c->sector_size];
618 		len = ref_totlen(c, jeb, ref);
625 		ref->flash_offset = ref_offset(ref) | dirent_node_state(rd);
633 	fd->raw = ref;
661 		err = jffs2_flash_read(c, (ref_offset(ref)) + read,
685 			   ref_offset(ref), je32_to_cpu(rd->node_crc), crc);
686 			jffs2_mark_node_obsolete(c, ref);
713 static inline int read_dnode(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref,
723 	BUG_ON(ref_obsolete(ref));
728 			     ref_offset(ref), je32_to_cpu(rd->node_crc), crc);
729 		jffs2_mark_node_obsolete(c, ref);
743 	if (ref_flags(ref) == REF_UNCHECKED) {
748 			JFFS2_WARNING("inode node header CRC is corrupted at %#08x\n", ref_offset(ref));
749 			jffs2_dbg_dump_node(c, ref_offset(ref));
750 			jffs2_mark_node_obsolete(c, ref);
804 					ref_offset(ref), tn->partial_crc, je32_to_cpu(rd->data_crc));
805 				jffs2_mark_node_obsolete(c, ref);
819 			jeb = &c->blocks[ref->flash_offset / c->sector_size];
820 			len = ref_totlen(c, jeb, ref);
827 			ref->flash_offset = ref_offset(ref) | REF_NORMAL;
843 	tn->fn->raw = ref;
857 		       ref_offset(ref), je32_to_cpu(rd->version),
888 static inline int read_unknown(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref, struct jffs2_unknown_node *un)
891 	if (ref_flags(ref) == REF_UNCHECKED) {
893 			    ref_offset(ref));
897 		jffs2_mark_node_obsolete(c, ref);
907 			    je16_to_cpu(un->nodetype), ref_offset(ref));
914 			    je16_to_cpu(un->nodetype), ref_offset(ref));
920 			     je16_to_cpu(un->nodetype), ref_offset(ref));
925 			     je16_to_cpu(un->nodetype), ref_offset(ref));
926 		jffs2_mark_node_obsolete(c, ref);
940 static int read_more(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref,
955 	offs = ref_offset(ref) + *rdlen;
984 	struct jffs2_raw_node_ref *ref, *valid_ref;
1008 		   they're in gets erased. So if we mark 'ref' obsolete while we're
1010 		   we find the next valid node first, before processing 'ref'.
1012 		ref = valid_ref;
1013 		valid_ref = jffs2_first_valid_node(ref->next_in_ino);
1035 			end = ref_offset(ref) + len;
1039 			len = end - ref_offset(ref);
1042 		dbg_readinode("read %d bytes at %#08x(%d).\n", len, ref_offset(ref), ref_flags(ref));
1045 		err = jffs2_flash_read(c, ref_offset(ref), len, &retlen, buf);
1047 			JFFS2_ERROR("can not read %d bytes from 0x%08x, error code: %d.\n", len, ref_offset(ref), err);
1052 			JFFS2_ERROR("short read at %#08x: %zu instead of %d.\n", ref_offset(ref), retlen, len);
1062 				     ref_offset(ref), je16_to_cpu(node->u.magic),
1066 			jffs2_dbg_dump_node(c, ref_offset(ref));
1067 			jffs2_mark_node_obsolete(c, ref);
1073 				     je16_to_cpu(node->u.magic), ref_offset(ref));
1074 			jffs2_mark_node_obsolete(c, ref);
1084 				err = read_more(c, ref, sizeof(struct jffs2_raw_dirent), &len, buf);
1089 			err = read_direntry(c, ref, &node->d, retlen, rii);
1099 				err = read_more(c, ref, sizeof(struct jffs2_raw_inode), &len, buf);
1104 			err = read_dnode(c, ref, &node->i, len, rii);
1113 				err = read_more(c, ref, sizeof(struct jffs2_unknown_node), &len, buf);
1118 			err = read_unknown(c, ref, &node->u);