diff options
Diffstat (limited to 'usr.bin/mkimg/mkimg.c')
| -rw-r--r-- | usr.bin/mkimg/mkimg.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/usr.bin/mkimg/mkimg.c b/usr.bin/mkimg/mkimg.c index a7409b686560..27b79b82ca02 100644 --- a/usr.bin/mkimg/mkimg.c +++ b/usr.bin/mkimg/mkimg.c @@ -142,8 +142,10 @@ static void usage(const char *why) { - warnx("error: %s", why); - fputc('\n', stderr); + if (why != NULL) { + warnx("error: %s", why); + fputc('\n', stderr); + } fprintf(stderr, "usage: %s <options>\n", getprogname()); fprintf(stderr, " options:\n"); @@ -171,19 +173,19 @@ usage(const char *why) print_schemes(1); fputc('\n', stderr); fprintf(stderr, " partition specification:\n"); - fprintf(stderr, "\t<t>[/<l>]::<size>[:[+]<offset>]\t- " + fprintf(stderr, "\t<type>[/<label>]::<size>[:[+]<offset>]\t- " "empty partition of given size and\n\t\t\t\t\t" " optional relative or absolute offset\n"); - fprintf(stderr, "\t<t>[/<l>]:=<file>[:[+]offset]\t- partition " + fprintf(stderr, "\t<type>[/<label>]:=<file>[:[+]offset]\t- partition " "content and size are\n\t\t\t\t\t" " determined by the named file and\n" "\t\t\t\t\t optional relative or absolute offset\n"); - fprintf(stderr, "\t<t>[/<l>]:-<cmd>\t\t- partition content and size " + fprintf(stderr, "\t<type>[/<label>]:-<cmd>\t\t- partition content and size " "are taken\n\t\t\t\t\t from the output of the command to run\n"); fprintf(stderr, "\t-\t\t\t\t- unused partition entry\n"); fprintf(stderr, "\t where:\n"); - fprintf(stderr, "\t\t<t>\t- scheme neutral partition type\n"); - fprintf(stderr, "\t\t<l>\t- optional scheme-dependent partition " + fprintf(stderr, "\t\t<type>\t- scheme neutral partition type\n"); + fprintf(stderr, "\t\t<label>\t- optional scheme-dependent partition " "label\n"); exit(EX_USAGE); @@ -564,7 +566,7 @@ main(int argc, char *argv[]) bcfd = -1; outfd = 1; /* Write to stdout by default */ - while ((c = getopt_long(argc, argv, "a:b:c:C:f:o:p:s:t:vyH:P:S:T:", + while ((c = getopt_long(argc, argv, "a:b:c:C:f:ho:p:s:t:vyH:P:S:T:", longopts, NULL)) != -1) { switch (c) { case 'a': /* ACTIVE PARTITION, if supported */ @@ -596,6 +598,9 @@ main(int argc, char *argv[]) if (error) errc(EX_DATAERR, error, "format"); break; + case 'h': /* HELP */ + usage(NULL); + break; case 'o': /* OUTPUT FILE */ if (outfd != 1) usage("multiple output files given"); |