Commit 6a93bb7e authored Oct 14, 2017 by Kamalesh Babulal Committed by Ingo Molnar Oct 18, 2017

objtool: Print top level commands on incorrect usage



Print top-level objtool commands, along with the error on incorrect
command line usage. Objtool command line parser exit's with code 129,
for incorrect usage. Convert the cmd_usage() exit code also, to maintain
consistency across objtool.

After the patch:

  $ ./objtool -j

  Unknown option: -j

  usage: objtool COMMAND [ARGS]

  Commands:
     check   Perform stack metadata validation on an object file
     orc     Generate in-place ORC unwind tables for an object file

  $ echo $?
  129

Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1507992474-16142-1-git-send-email-kamalesh@linux.vnet.ibm.com


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent 2704fbb6

tools/objtool/objtool.c

+2 −4

Original line number	Diff line number	Diff line
		@@ -70,7 +70,7 @@ static void cmd_usage(void)

		printf("\n");

		exit(1);
		exit(129);
		}

		static void handle_options(int argc, const char **argv)
		@@ -86,9 +86,7 @@ static void handle_options(int argc, const char **argv)
		break;
		} else {
		fprintf(stderr, "Unknown option: %s\n", cmd);
		fprintf(stderr, "\n Usage: %s\n",
		objtool_usage_string);
		exit(1);
		cmd_usage();
		}

		(*argv)++;