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authorKevin Wolf <kwolf@redhat.com>2012-12-06 14:32:55 +0100
committerKevin Wolf <kwolf@redhat.com>2012-12-12 12:33:48 +0100
commit312a2ba0eb8ab19646517aeaa785475d3fbcfd51 (patch)
tree2f2efc7e3d7b5da67703199b37e8007b51c984ce
parentb83c18e225cf82a21535561270b6dfd86b1c9031 (diff)
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blkdebug: Allow usage without config file
As soon as new rules can be set during runtime, as introduced by the next patch, blkdebug makes sense even without a config file. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
-rw-r--r--block/blkdebug.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/block/blkdebug.c b/block/blkdebug.c
index d61ece8..c9041ec 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -240,6 +240,11 @@ static int read_config(BDRVBlkdebugState *s, const char *filename)
int ret;
struct add_rule_data d;
+ /* Allow usage without config file */
+ if (!*filename) {
+ return 0;
+ }
+
f = fopen(filename, "r");
if (f == NULL) {
return -errno;