From 1aeb6e7cd118b90f1a227c79b26100af6a15960e Mon Sep 17 00:00:00 2001
From: Damien Le Moal <damien.lemoal@wdc.com>
Date: Thu, 16 Jul 2020 13:38:14 +0900
Subject: [PATCH] dm ioctl: Fix compilation warning
Git-commit: 1aeb6e7cd118b90f1a227c79b26100af6a15960e
Patch-mainline: v5.9-rc1
References: bsc#1175995, jsc#SLE-15608
In retrieve_status(), when copying the target type name in the
target_type string field of struct dm_target_spec, copy at most
DM_MAX_TYPE_NAME - 1 character to avoid the compilation warning:
Warning: ‘__builtin_strncpy’ specified bound 16 equals destination
size [-Wstringop-truncation]
when compiling with W-1.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Coly Li <colyli@suse.de>
---
drivers/md/dm-ioctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index 489935d5f22d..5792878dbff6 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1168,7 +1168,7 @@ static void retrieve_status(struct dm_table *table,
spec->sector_start = ti->begin;
spec->length = ti->len;
strncpy(spec->target_type, ti->type->name,
- sizeof(spec->target_type));
+ sizeof(spec->target_type) - 1);
outptr += sizeof(struct dm_target_spec);
remaining = len - (outptr - outbuf);
--
2.26.2