patman: Update command.Run() to handle failure better
At present tools are not expected to fail. If they do an exception is
raised but there is no detail about what went wrong. This makes it hard
to debug if something does actually go wrong.
Fix this by outputting both stderr and stdout on failure.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/patman/tools.py b/tools/patman/tools.py
index 97441ca..0952681 100644
--- a/tools/patman/tools.py
+++ b/tools/patman/tools.py
@@ -205,8 +205,14 @@
if tool_search_paths:
env = dict(os.environ)
env['PATH'] = ':'.join(tool_search_paths) + ':' + env['PATH']
- return command.Run(name, *args, capture=True, capture_stderr=True,
- env=env)
+ all_args = (name,) + args
+ result = command.RunPipe([all_args], capture=True, capture_stderr=True,
+ env=env, raise_on_error=False)
+ if result.return_code:
+ raise Exception("Error %d running '%s': %s" %
+ (result.return_code,' '.join(all_args),
+ result.stderr))
+ return result.stdout
except:
if env and not PathHasFile(env['PATH'], name):
msg = "Please install tool '%s'" % name