fs/jffs2/xattr.c

424  * verify_xattr_ref(c, ref)
427  * save_xattr_ref(c, ref)
432  * delete_xattr_ref(c, ref)
444 static int verify_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref)
454 	if (ref_flags(ref->node) != REF_UNCHECKED)
456 	offset = ref_offset(ref->node);
482 	ref->ino = je32_to_cpu(rr.ino);
483 	ref->xid = je32_to_cpu(rr.xid);
484 	ref->xseqno = je32_to_cpu(rr.xseqno);
485 	if (ref->xseqno > c->highest_xseqno)
486 		c->highest_xseqno = (ref->xseqno & ~XREF_DELETE_MARKER);
490 	for (raw=ref->node; raw != (void *)ref; raw=raw->next_in_ino) {
497 		raw->flash_offset = ref_offset(raw) | ((ref->node==raw) ? REF_PRISTINE : REF_NORMAL);
502 		  ref->ino, ref->xid, ref_offset(ref->node));
506 static int save_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref)
520 	if (is_xattr_ref_dead(ref)) {
522 		rr.ino = cpu_to_je32(ref->ino);
523 		rr.xid = cpu_to_je32(ref->xid);
525 		rr.ino = cpu_to_je32(ref->ic->ino);
526 		rr.xid = cpu_to_je32(ref->xd->xid);
542 	ref->xseqno = xseqno;
543 	jffs2_add_physical_node_ref(c, phys_ofs | REF_PRISTINE, PAD(sizeof(rr)), (void *)ref);
545 	dbg_xattr("success on saving xref (ino=%u, xid=%u)\n", ref->ic->ino, ref->xd->xid);
554 	struct jffs2_xattr_ref *ref;
557 	ref = jffs2_alloc_xattr_ref();
558 	if (!ref)
560 	ref->ic = ic;
561 	ref->xd = xd;
563 	ret = save_xattr_ref(c, ref);
565 		jffs2_free_xattr_ref(ref);
570 	ref->next = ic->xref;
571 	ic->xref = ref;
573 	return ref; /* success */
576 static void delete_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref)
581 	xd = ref->xd;
582 	ref->xseqno |= XREF_DELETE_MARKER;
583 	ref->ino = ref->ic->ino;
584 	ref->xid = ref->xd->xid;
586 	ref->next = c->xref_dead_list;
587 	c->xref_dead_list = ref;
591 		  ref->ino, ref->xid, ref->xseqno);
600 	struct jffs2_xattr_ref *ref, *_ref;
606 	for (ref = ic->xref; ref; ref = _ref) {
607 		_ref = ref->next;
608 		delete_xattr_ref(c, ref);
618 	struct jffs2_xattr_ref *ref, *_ref;
621 	for (ref = ic->xref; ref; ref = _ref) {
622 		_ref = ref->next;
623 		xd = ref->xd;
628 		jffs2_free_xattr_ref(ref);
640 	struct jffs2_xattr_ref *ref, *cmp, **pref, **pcmp;
648 	for (ref=ic->xref, pref=&ic->xref; ref; pref=&ref->next, ref=ref->next) {
649 		if (!ref->xd->xname) {
650 			rc = load_xattr_datum(c, ref->xd);
652 				*pref = ref->next;
653 				delete_xattr_ref(c, ref);
658 		for (cmp=ref->next, pcmp=&ref->next; cmp; pcmp=&cmp->next, cmp=cmp->next) {
660 				ref->xd->flags |= JFFS2_XFLAGS_BIND;
662 				ref->xd->flags &= ~JFFS2_XFLAGS_BIND;
670 			if (ref->xd->xprefix == cmp->xd->xprefix
671 			    && !strcmp(ref->xd->xname, cmp->xd->xname)) {
672 				if (ref->xseqno > cmp->xseqno) {
676 					*pref = ref->next;
677 					delete_xattr_ref(c, ref);
743 	struct jffs2_xattr_ref *ref, *_ref;
746 	for (ref=c->xref_temp; ref; ref = _ref) {
747 		_ref = ref->next;
748 		jffs2_free_xattr_ref(ref);
751 	for (ref=c->xref_dead_list; ref; ref = _ref) {
752 		_ref = ref->next;
753 		jffs2_free_xattr_ref(ref);
777 	struct jffs2_xattr_ref *ref, *_ref;
793 	for (ref=c->xref_temp; ref; ref=_ref) {
796 		_ref = ref->next;
797 		if (ref_flags(ref->node) != REF_PRISTINE) {
798 			if (verify_xattr_ref(c, ref)) {
799 				BUG_ON(ref->node->next_in_ino != (void *)ref);
800 				ref->node->next_in_ino = NULL;
801 				jffs2_mark_node_obsolete(c, ref->node);
802 				jffs2_free_xattr_ref(ref);
807 		i = (ref->ino ^ ref->xid) % XREF_TMPHASH_SIZE;
809 			if (tmp->ino == ref->ino && tmp->xid == ref->xid)
813 			raw = ref->node;
814 			if (ref->xseqno > tmp->xseqno) {
815 				tmp->xseqno = ref->xseqno;
822 			jffs2_free_xattr_ref(ref);
825 			ref->next = xref_tmphash[i];
826 			xref_tmphash[i] = ref;
833 		for (ref=xref_tmphash[i]; ref; ref=_ref) {
835 			_ref = ref->next;
836 			if (is_xattr_ref_dead(ref)) {
837 				ref->next = c->xref_dead_list;
838 				c->xref_dead_list = ref;
842 			/* At this point, ref->xid and ref->ino contain XID and inode number.
843 			   ref->xd and ref->ic are not valid yet. */
844 			xd = jffs2_find_xattr_datum(c, ref->xid);
845 			ic = jffs2_get_ino_cache(c, ref->ino);
848 					  ref->ino, ref->xid, ref->xseqno);
849 				ref->xseqno |= XREF_DELETE_MARKER;
850 				ref->next = c->xref_dead_list;
851 				c->xref_dead_list = ref;
855 			ref->xd = xd;
856 			ref->ic = ic;
858 			ref->next = ic->xref;
859 			ic->xref = ref;
972 	struct jffs2_xattr_ref *ref, **pref;
985 	for (ref=ic->xref, pref=&ic->xref; ref; pref=&ref->next, ref=ref->next) {
986 		BUG_ON(ref->ic != ic);
987 		xd = ref->xd;
998 					*pref = ref->next;
999 					delete_xattr_ref(c, ref);
1042 	struct jffs2_xattr_ref *ref, **pref;
1051 	for (ref=ic->xref, pref=&ic->xref; ref; pref=&ref->next, ref=ref->next) {
1052 		BUG_ON(ref->ic!=ic);
1054 		xd = ref->xd;
1067 					*pref = ref->next;
1068 					delete_xattr_ref(c, ref);
1104 	struct jffs2_xattr_ref *ref, *newref, **pref;
1123 	for (ref=ic->xref, pref=&ic->xref; ref; pref=&ref->next, ref=ref->next) {
1124 		xd = ref->xd;
1130 				*pref = ref->next;
1131 				delete_xattr_ref(c, ref);
1142 				ref->ino = ic->ino;
1143 				ref->xid = xd->xid;
1144 				ref->xseqno |= XREF_DELETE_MARKER;
1145 				rc = save_xattr_ref(c, ref);
1147 					*pref = ref->next;
1149 					ref->next = c->xref_dead_list;
1150 					c->xref_dead_list = ref;
1154 					ref->ic = ic;
1155 					ref->xd = xd;
1156 					ref->xseqno &= ~XREF_DELETE_MARKER;
1192 	if (ref)
1193 		*pref = ref->next;
1196 		if (ref) {
1197 			ref->next = ic->xref;
1198 			ic->xref = ref;
1202 	} else if (ref) {
1203 		delete_xattr_ref(c, ref);
1214  * jffs2_garbage_collect_xattr_ref(c, ref, raw)
1220  * jffs2_release_xattr_ref(c, ref)
1259 int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref,
1266 	BUG_ON(!ref->node);
1268 	if (ref->node != raw)
1270 	if (is_xattr_ref_dead(ref) && (raw->next_in_ino == (void *)ref))
1273 	old_ofs = ref_offset(ref->node);
1274 	totlen = ref_totlen(c, c->gcblock, ref->node);
1282 	rc = save_xattr_ref(c, ref);
1285 			  ref->ic->ino, ref->xd->xid, old_ofs, ref_offset(ref->node));
1336 void jffs2_release_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref)
1341 	if (ref->node != (void *)ref)
1345 		if (ref == tmp) {
1350 	jffs2_free_xattr_ref(ref);