Function eal_parse_args

dpdk/lib/eal/linux/eal.c:626–824

Parse the argument given in the command line of the application */

/* Parse the argument given in the command line of the application */
static int
eal_parse_args(int argc, char **argv)
{
	int opt, ret;
	char **argvopt;
	int option_index;
	char *prgname = argv[0];
	const int old_optind = optind;
	const int old_optopt = optopt;
	char * const old_optarg = optarg;
	struct internal_config *internal_conf =
		eal_get_internal_configuration();

	argvopt = argv;
	optind = 1;

	while ((opt = getopt_long(argc, argvopt, eal_short_options,
				  eal_long_options, &option_index)) != EOF) {

		/* getopt didn't recognise the option */
		if (opt == '?') {
			eal_usage(prgname);
			ret = -1;
			goto out;
		}

		/* eal_log_level_parse() already handled this option */
		if (opt == OPT_LOG_LEVEL_NUM)
			continue;

		ret = eal_parse_common_option(opt, optarg, internal_conf);
		/* common parser is not happy */
		if (ret < 0) {
			eal_usage(prgname);
			ret = -1;
			goto out;
		}
		/* common parser handled this option */
		if (ret == 0)
			continue;

		switch (opt) {
		case OPT_HELP_NUM:
			eal_usage(prgname);
			exit(EXIT_SUCCESS);

		case OPT_HUGE_DIR_NUM:
		{
			char *hdir = strdup(optarg);
			if (hdir == NULL)
				RTE_LOG(ERR, EAL, "Could not store hugepage directory\n");
			else {
				/* free old hugepage dir */
				free(internal_conf->hugepage_dir);
				internal_conf->hugepage_dir = hdir;
			}
			break;
		}