diff options
Diffstat (limited to 'tools/dumpimage.c')
| -rw-r--r-- | tools/dumpimage.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/tools/dumpimage.c b/tools/dumpimage.c index e17e979..5c9ad36 100644 --- a/tools/dumpimage.c +++ b/tools/dumpimage.c @@ -65,7 +65,7 @@ int main(int argc, char **argv) params.cmdname = *argv; - while ((opt = getopt(argc, argv, "lo:T:p:V")) != -1) { + while ((opt = getopt(argc, argv, "hlo:T:p:V")) != -1) { switch (opt) { case 'l': params.lflag = 1; @@ -79,7 +79,7 @@ int main(int argc, char **argv) if (params.type < 0) { fprintf(stderr, "%s: Invalid type\n", params.cmdname); - usage(); + exit(EXIT_FAILURE); } break; case 'p': @@ -94,15 +94,20 @@ int main(int argc, char **argv) case 'V': printf("dumpimage version %s\n", PLAIN_VERSION); exit(EXIT_SUCCESS); + case 'h': + usage(); default: usage(); break; } } + if (argc < 2) + usage(); + if (optind >= argc) { fprintf(stderr, "%s: image file missing\n", params.cmdname); - usage(); + exit(EXIT_FAILURE); } params.imagefile = argv[optind]; @@ -123,7 +128,7 @@ int main(int argc, char **argv) if (tparams->check_params(¶ms)) { fprintf(stderr, "%s: Parameter check failed\n", params.cmdname); - usage(); + exit(EXIT_FAILURE); } } @@ -196,8 +201,11 @@ static void usage(void) " -p ==> 'position' (starting at 0) of the component to extract from image\n", params.cmdname); fprintf(stderr, + " %s -h ==> print usage information and exit\n", + params.cmdname); + fprintf(stderr, " %s -V ==> print version information and exit\n", params.cmdname); - exit(EXIT_FAILURE); + exit(EXIT_SUCCESS); } |