diff options
| author | Daniel Wagner <daniel.wagner@siemens.com> | 2017-06-12 12:50:42 +0200 |
|---|---|---|
| committer | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2017-06-14 10:55:26 +0200 |
| commit | 12e27a1b2adf14c33694db82e1f6f8bde560b9a2 (patch) | |
| tree | d101a43c524488d1a146ecd3e7ac547f3ec67f32 /jffsX-utils/jffs2dump.c | |
| parent | 9a357ee3b12e180ab116ac811c20c153e7aed254 (diff) | |
jffsX-utils: Return error code if command line option is unknown
The tools in question will quit with an exit code 0 if the command
line option was not recognized. By returning an error code a calling
script has the possibility to distinguish between a real success and
an invalid invocation.
Signed-off-by: Daniel Wagner <daniel.wagner@siemens.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'jffsX-utils/jffs2dump.c')
| -rw-r--r-- | jffsX-utils/jffs2dump.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/jffsX-utils/jffs2dump.c b/jffsX-utils/jffs2dump.c index 82f3197..a7d99e8 100644 --- a/jffsX-utils/jffs2dump.c +++ b/jffsX-utils/jffs2dump.c @@ -50,7 +50,7 @@ long imglen; // length of image char *data; // image data -void display_help (void) +void display_help (int error) { printf("Usage: %s [OPTION]... INPUTFILE\n" "Dump the contents of a binary JFFS2 image.\n\n" @@ -65,7 +65,7 @@ void display_help (void) " -o, --oobsize=LEN size of oob data chunk in binary image (NAND only)\n" " -v, --verbose verbose output\n", PROGRAM_NAME); - exit(0); + exit(error ? EXIT_FAILURE : EXIT_SUCCESS); } void display_version (void) @@ -124,7 +124,7 @@ void process_options (int argc, char *argv[]) switch (c) { case 'h': - display_help(); + display_help(0); break; case 'V': display_version(); @@ -161,7 +161,7 @@ void process_options (int argc, char *argv[]) } if ((argc - optind) != 1 || error) - display_help (); + display_help (error); img = argv[optind]; } |