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authorDaniel Wagner <daniel.wagner@siemens.com>2017-06-12 12:50:52 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2017-06-14 10:55:27 +0200
commitb8e785a96f907022466bd383ec6afaa201e5f759 (patch)
tree4c0e50db8217f013b1eb38f4311e44adf0d00fc8 /nor-utils/rfddump.c
parent12e27a1b2adf14c33694db82e1f6f8bde560b9a2 (diff)
nor-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 'nor-utils/rfddump.c')
-rw-r--r--nor-utils/rfddump.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/nor-utils/rfddump.c b/nor-utils/rfddump.c
index 048f58c..5141ea3 100644
--- a/nor-utils/rfddump.c
+++ b/nor-utils/rfddump.c
@@ -55,7 +55,7 @@ struct rfd {
int verbose;
};
-void display_help(void)
+void display_help(int status)
{
printf("Usage: %s [OPTIONS] MTD-device filename\n"
"Dumps the contents of a resident flash disk\n"
@@ -65,7 +65,7 @@ void display_help(void)
"-v --verbose Be verbose\n"
"-b size --blocksize Block size (defaults to erase unit)\n",
PROGRAM_NAME);
- exit(0);
+ exit(status);
}
void display_version(void)
@@ -101,7 +101,7 @@ void process_options(int argc, char *argv[], struct rfd *rfd)
switch (c) {
case 'h':
- display_help();
+ display_help(EXIT_SUCCESS);
break;
case 'V':
display_version();
@@ -119,7 +119,7 @@ void process_options(int argc, char *argv[], struct rfd *rfd)
}
if ((argc - optind) != 2 || error)
- display_help();
+ display_help(EXIT_FAILURE);
rfd->mtd_filename = argv[optind];
rfd->out_filename = argv[optind + 1];