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/*
* cpuplugd - Linux for System z Hotplug Daemon
*
* Command line parsing
*
* Copyright IBM Corp. 2007, 2017
*
* s390-tools is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See LICENSE for details.
*/
#include <getopt.h>
#include "cpuplugd.h"
void print_usage(int is_error, char program_name[]);
void print_version();
int foreground;
int debug;
char *configfile;
int cpu_idle_limit;
void parse_options(int argc, char **argv)
{
int config_file_specified = -1;
const struct option long_options[] = {
{ "help", no_argument, NULL, 'h'},
{ "foreground", no_argument, NULL, 'f' },
{ "config", required_argument, NULL, 'c' },
{ "version", no_argument, NULL, 'v' },
{ "verbose", no_argument, NULL, 'V' },
{ NULL, 0, NULL, 0}
};
/* dont run without any argument */
if (argc == 0 || argc == 1)
print_usage(0, argv[0]);
while (optind < argc) {
int index = -1;
struct option *opt = 0;
int result = getopt_long(argc, argv, "hfc:vVm",
long_options, &index);
if (result == -1)
break; /* end of list */
switch (result) {
case 'h':
print_usage(0, argv[0]);
break;
case 'f':
foreground = 1;
break;
case 'c':
/*
* This prevents -cbla and enforces the
* user to specify -c bla
*/
if (strcmp(argv[optind-1], optarg) == 0) {
configfile = optarg;
config_file_specified = 1;
} else {
cpuplugd_error("Unrecognized option: %s\n",
optarg);
exit(1);
}
break;
case 'v':
print_version();
break;
case 'V':
debug = 1;
break;
case 0:
/* all parameter that do not appear in the optstring */
opt = (struct option *)&(long_options[index]);
printf("'%s' was specified.",
opt->name);
if (opt->has_arg == required_argument)
printf("Arg: <%s>", optarg);
printf("\n");
break;
case '?':
printf("Try '%s' --help' for more information.\n",
argv[0]);
exit(1);
break;
case -1:
/*
* We also run in this case if no argument was
* specified
*/
break;
default:
print_usage(0, argv[0]);
}
}
if (config_file_specified == -1) {
printf("You have to specify a configuration file!\n");
printf("Try '%s' --help' for more information.\n", argv[0]);
exit(1);
}
}
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