diff options
Diffstat (limited to 'block/blkverify.c')
| -rw-r--r-- | block/blkverify.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/block/blkverify.c b/block/blkverify.c index 6b0a603cf0..06369f9eac 100644 --- a/block/blkverify.c +++ b/block/blkverify.c @@ -301,10 +301,14 @@ static void blkverify_refresh_filename(BlockDriverState *bs, QDict *options) if (bs->file->bs->exact_filename[0] && s->test_file->bs->exact_filename[0]) { - snprintf(bs->exact_filename, sizeof(bs->exact_filename), - "blkverify:%s:%s", - bs->file->bs->exact_filename, - s->test_file->bs->exact_filename); + int ret = snprintf(bs->exact_filename, sizeof(bs->exact_filename), + "blkverify:%s:%s", + bs->file->bs->exact_filename, + s->test_file->bs->exact_filename); + if (ret >= sizeof(bs->exact_filename)) { + /* An overflow makes the filename unusable, so do not report any */ + bs->exact_filename[0] = 0; + } } } |