/* Called for each key=value passed on the command line. This plugin
* only accepts file=<filename>, which is required.
*/
static int
file_config (const char *key, const char *value)
{
if (strcmp (key, "file") == 0) {
/* See FILENAMES AND PATHS in nbdkit-plugin(3). */
filename = nbdkit_absolute_path (value);
if (!filename)
return -1;
}
else {
nbdkit_error ("unknown parameter '%s'", key);
return -1;
}
return 0;
}
int
main (int argc, char *argv[])
{
int c;
int option_index;
int help = 0, version = 0;
tls_init ();
for (;;) {
c = getopt_long (argc, argv, short_options, long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 0: /* options which are long only */
if (strcmp (long_options[option_index].name, "dump-config") == 0) {
dump_config ();
exit (EXIT_SUCCESS);
}
else if (strcmp (long_options[option_index].name, "run") == 0) {
run = optarg;
foreground = 1;
}
else {
fprintf (stderr, "%s: unknown long option: %s (%d)\n",
program_name, long_options[option_index].name, option_index);
exit (EXIT_FAILURE);
}
break;
case 'f':
foreground = 1;
break;
case 'g':
group = optarg;
break;
case 'i':
ipaddr = optarg;
break;
case 'n':
newstyle = 1;
break;
case 'o':
/* XXX When we add support for exportnames, we will need to
* ensure that the user does not use -o + --export.
*/
newstyle = 0;
break;
case 'P':
pidfile = nbdkit_absolute_path (optarg);
if (pidfile == NULL)
exit (EXIT_FAILURE);
break;
case 'p':
port = optarg;
break;
case 'r':
readonly = 1;
break;
case 's':
listen_stdin = 1;
break;
case 'U':
if (strcmp (optarg, "-") == 0)
unixsocket = make_random_fifo ();
else
unixsocket = nbdkit_absolute_path (optarg);
if (unixsocket == NULL)
exit (EXIT_FAILURE);
break;
case 'u':
user = optarg;
break;
case 'v':
verbose = 1;
break;
case 'V':
version = 1;
break;
case HELP_OPTION:
help = 1;
break;
default:
usage ();
exit (EXIT_FAILURE);
}
}
/* No extra parameters. */
if (optind >= argc) {
if (help) {
usage ();
exit (EXIT_SUCCESS);
}
if (version) {
display_version ();
exit (EXIT_SUCCESS);
}
/* Otherwise this is an error. */
fprintf (stderr,
"%s: no plugins given on the command line.\nRead nbdkit(1) for documentation.\n",
program_name);
exit (EXIT_FAILURE);
}
/* Remaining command line arguments define the plugins and plugin
* configuration. If --help or --version was specified, we still
* partially parse these in order that we can display the per-plugin
* help/version information. In future (when the new protocol and
* export names are permitted) we will allow multiple plugins to be
* given, but at the moment only one plugin is allowed.
*/
while (optind < argc) {
const char *filename = argv[optind];
char *p;
open_plugin_so (filename);
/* Find key=value configuration parameters for this plugin. */
++optind;
while (optind < argc && (p = strchr (argv[optind], '=')) != NULL) {
if (help || version)
continue;
*p = '\0';
plugin_config (argv[optind], p+1);
++optind;
}
if (help) {
usage ();
printf ("\n%s:\n\n", filename);
plugin_usage ();
exit (EXIT_SUCCESS);
}
if (version) {
display_version ();
plugin_version ();
exit (EXIT_SUCCESS);
}
plugin_config_complete ();
/* If we supported export names, then we'd continue in the loop
* here, but at the moment only one plugin may be used per server
* so exit if there are any more.
*/
++optind;
if (optind < argc) {
fprintf (stderr, "%s: this server only supports a single plugin\n",
program_name);
exit (EXIT_FAILURE);
}
}
start_serving ();
plugin_cleanup ();
free (unixsocket);
free (pidfile);
if (random_fifo) {
unlink (random_fifo);
free (random_fifo);
}
if (random_fifo_dir) {
rmdir (random_fifo_dir);
free (random_fifo_dir);
}
exit (EXIT_SUCCESS);
}
