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storage-daemon: report unexpected arguments on the fly

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If the first character of optstring is '-', then each nonoption argv
element is handled as if it were the argument of an option with character
code 1.  This removes the reordering of the argv array, and enables usage
of loc_set_cmdline to provide better error messages.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210301152844.291799-2-pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2021-03-01 10:28:43 -05:00 committed by Kevin Wolf
parent 3b6ad6230e
commit a5ef35052e
1 changed files with 4 additions and 5 deletions
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9
storage-daemon/qemu-storage-daemon.c
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@ -174,7 +174,7 @@ static void process_options(int argc, char *argv[])
* they are given on the command lines. This means that things must be
* defined first before they can be referenced in another option.
*/
while ((c = getopt_long(argc, argv, "hT:V", long_options, NULL)) != -1) {
while ((c = getopt_long(argc, argv, "-hT:V", long_options, NULL)) != -1) {
switch (c) {
case '?':
exit(EXIT_FAILURE);
@ -275,14 +275,13 @@ static void process_options(int argc, char *argv[])
qobject_unref(args);
break;
}
case 1:
error_report("Unexpected argument: %s", optarg);
exit(EXIT_FAILURE);
default:
g_assert_not_reached();
}
}
if (optind != argc) {
error_report("Unexpected argument: %s", argv[optind]);
exit(EXIT_FAILURE);
}
}
int main(int argc, char *argv[])