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machine-id-setup: add the usual command line parameters

This commit is contained in:
Lennart Poettering 2012-04-12 15:07:24 +02:00
parent 2c4ff63406
commit 984bf9312e
3 changed files with 88 additions and 1 deletions
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20
man/systemd-machine-id-setup.xml
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@ -92,7 +92,25 @@
<refsect1>
<title>Options</title>
<para>This tool does not take any options or arguments.</para>
<para>The following options are understood:</para>
<variablelist>
<varlistentry>
<term><option>-h</option></term>
<term><option>--help</option></term>
<listitem><para>Prints a short help
text and exits.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--version</option></term>
<listitem><para>Prints a short version
string and exits.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>

1
src/machine-id-setup/Makefile Symbolic link
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@ -0,0 +1 @@
../Makefile

68
src/machine-id-setup/machine-id-setup-main.c
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@ -21,15 +21,83 @@
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <getopt.h>
#include <errno.h>
#include "machine-id-setup.h"
#include "log.h"
#include "build.h"
static int help(void) {
printf("%s [OPTIONS...]\n\n"
"Initialize /etc/machine-id from a random source.\n\n"
" -h --help Show this help\n"
" --version Show package version\n",
program_invocation_short_name);
return 0;
}
static int parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ NULL, 0, NULL, 0 }
};
int c;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "hqcv", options, NULL)) >= 0) {
switch (c) {
case 'h':
help();
return 0;
case ARG_VERSION:
puts(PACKAGE_STRING);
puts(DISTRIBUTION);
puts(SYSTEMD_FEATURES);
return 0;
case '?':
return -EINVAL;
default:
log_error("Unknown option code %c", c);
return -EINVAL;
}
}
if (optind < argc) {
help();
return -EINVAL;
}
return 1;
}
int main(int argc, char *argv[]) {
int r;
log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
log_open();
r = parse_argv(argc, argv);
if (r <= 0)
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
return machine_id_setup() < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}