62 static int is_empty(void *buf, int len)  in is_empty()  argument
67 	for (i = 0; i < len; i++)  in is_empty()
81 static int first_non_ff(void *buf, int len)  in first_non_ff()  argument
86 	for (i = 0; i < len; i++)  in first_non_ff()
113 	int err, offs, len;  in get_master_node()  local
127 	len = c->leb_size;  in get_master_node()
135 		len  -= sz;  in get_master_node()
143 		len  += sz;  in get_master_node()
144 		ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 1);  in get_master_node()
149 			len  += sz;  in get_master_node()
150 			ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 1);  in get_master_node()
168 			len  -= sz;  in get_master_node()
173 		if (!is_empty(buf, min_t(int, len, sz))) {  in get_master_node()
179 		len  -= sz;  in get_master_node()
183 		if (!is_empty(buf, len))  in get_master_node()
441 		      int *offs, int *len)  in clean_buf()  argument
454 	*len -= pad_len;  in clean_buf()
470 static int no_more_nodes(const struct ubifs_info *c, void *buf, int len,  in no_more_nodes()  argument
474 	int skip, dlen = le32_to_cpu(ch->len);  in no_more_nodes()
478 	if (is_empty(buf + skip, len - skip))  in no_more_nodes()
491 	if (is_empty(buf + skip, len - skip))  in no_more_nodes()
514 		endpt = snod->offs + snod->len;  in fix_unclean_leb()
540 			int len = ALIGN(endpt, c->min_io_size);  in fix_unclean_leb()  local
549 			if (len > endpt) {  in fix_unclean_leb()
550 				int pad_len = len - ALIGN(endpt, 8);  in fix_unclean_leb()
553 					void *buf = sleb->buf + len - pad_len;  in fix_unclean_leb()
558 			err = ubifs_leb_change(c, lnum, sleb->buf, len);  in fix_unclean_leb()
637 	int ret = 0, err, len = c->leb_size - offs, start = offs, min_io_unit;  in ubifs_recover_leb()  local
648 	ubifs_assert(len >= 8);  in ubifs_recover_leb()
649 	while (len >= 8) {  in ubifs_recover_leb()
651 			 lnum, offs, len);  in ubifs_recover_leb()
659 		ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 1);  in ubifs_recover_leb()
668 			node_len = ALIGN(le32_to_cpu(ch->len), 8);  in ubifs_recover_leb()
671 			len -= node_len;  in ubifs_recover_leb()
676 			len -= ret;  in ubifs_recover_leb()
695 		if (!no_more_nodes(c, buf, len, lnum, offs))  in ubifs_recover_leb()
697 	} else if (!is_empty(buf, len)) {  in ubifs_recover_leb()
699 			int corruption = first_non_ff(buf, len);  in ubifs_recover_leb()
778 	len = c->leb_size - offs;  in ubifs_recover_leb()
780 	clean_buf(c, &buf, lnum, &offs, &len);  in ubifs_recover_leb()
792 	ubifs_scan_a_node(c, buf, len, lnum, offs, 0);  in ubifs_recover_leb()
926 	int len = c->max_write_size, err;  in recover_head()  local
928 	if (offs + len > c->leb_size)  in recover_head()
929 		len = c->leb_size - offs;  in recover_head()
931 	if (!len)  in recover_head()
935 	err = ubifs_leb_read(c, lnum, sbuf, offs, len, 1);  in recover_head()
936 	if (err || !is_empty(sbuf, len)) {  in recover_head()
997 	int err, lnum = ucleb->lnum, offs = 0, len = ucleb->endpt, quiet = 1;  in clean_an_unclean_leb()  local
1000 	dbg_rcvry("LEB %d len %d", lnum, len);  in clean_an_unclean_leb()
1002 	if (len == 0) {  in clean_an_unclean_leb()
1007 	err = ubifs_leb_read(c, lnum, buf, offs, len, 0);  in clean_an_unclean_leb()
1011 	while (len >= 8) {  in clean_an_unclean_leb()
1017 		ret = ubifs_scan_a_node(c, buf, len, lnum, offs, quiet);  in clean_an_unclean_leb()
1024 			node_len = ALIGN(le32_to_cpu(ch->len), 8);  in clean_an_unclean_leb()
1027 			len -= node_len;  in clean_an_unclean_leb()
1035 			len -= ret;  in clean_an_unclean_leb()
1056 	len = ALIGN(ucleb->endpt, c->min_io_size);  in clean_an_unclean_leb()
1057 	if (len > ucleb->endpt) {  in clean_an_unclean_leb()
1058 		int pad_len = len - ALIGN(ucleb->endpt, 8);  in clean_an_unclean_leb()
1061 			buf = c->sbuf + len - pad_len;  in clean_an_unclean_leb()
1067 	err = ubifs_leb_change(c, lnum, sbuf, len);  in clean_an_unclean_leb()
1419 	int err, lnum, offs, len;  in fix_size_in_place()  local
1442 	len = le32_to_cpu(ino->ch.len);  in fix_size_in_place()
1443 	crc = crc32(UBIFS_CRC32_INIT, (void *)ino + 8, len - 8);  in fix_size_in_place()
1447 	len = c->leb_size - 1;  in fix_size_in_place()
1448 	while (p[len] == 0xff)  in fix_size_in_place()
1449 		len -= 1;  in fix_size_in_place()
1450 	len = ALIGN(len + 1, c->min_io_size);  in fix_size_in_place()
1452 	err = ubifs_leb_change(c, lnum, c->sbuf, len);  in fix_size_in_place()