xentrace: error handling on non-existent formats file

Attached patch does proper error handling when specified
formats file doesn't exist.

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>

diff --git a/tools/xentrace/xentrace_format b/tools/xentrace/xentrace_format
index d66cb74578f9a8fd4aec9d5228158ec7fdc40e18..f0127309abb9fb8650b36243c270450a886b21a2 100644 (file)
--- a/tools/xentrace/xentrace_format
+++ b/tools/xentrace/xentrace_format
@@ -81,7 +81,11 @@ signal.signal(signal.SIGINT,  sighand)
 
 interrupted = 0
 
-defs = read_defs(arg[0])
+try:
+    defs = read_defs(arg[0])
+except IOError, exn:
+    print exn
+    sys.exit(1)
 
 # structure of trace record (as output by xentrace):
 # HDR(I) {TSC(Q)} D1(I) D2(I) D3(I) D4(I) D5(I) D6(I) D7(I)