[lockdev-devel] [PATCH 03/10] RedHat patch 3

[Ludwig Nussel]

print help if helper is called without arguments
---
 src/sample.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/src/sample.c b/src/sample.c
index a02dace..e4ef342 100644
--- a/src/sample.c
+++ b/src/sample.c
@@ -32,6 +32,8 @@ main (int   argc,
 		}
 		else dev = p;
 	}
+	if (dev == NULL)
+	    usage();
 	i = 0;
 	(void) dev_setpid(getppid());
 	switch( ch ) {
-- 
1.6.4.2