From b0a0d7c05dde1476b249aa8d6d36de0189e9eeab Mon Sep 17 00:00:00 2001 From: Oleksij Rempel Date: Wed, 22 Mar 2017 10:14:39 +0100 Subject: add seed command Signed-off-by: Oleksij Rempel Signed-off-by: Sascha Hauer --- commands/seed.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 commands/seed.c (limited to 'commands/seed.c') diff --git a/commands/seed.c b/commands/seed.c new file mode 100644 index 0000000000..e378cd7635 --- /dev/null +++ b/commands/seed.c @@ -0,0 +1,44 @@ +/* + * (c) 2017 Oleksij Rempel + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include + +static int do_seed(int argc, char *argv[]) +{ + if (argc < 2) + return COMMAND_ERROR_USAGE; + + if (isdigit(*argv[1])) { + srand(simple_strtoul(argv[1], NULL, 0)); + return 0; + } + + printf("numerical parameter expected\n"); + return 1; +} + +BAREBOX_CMD_HELP_START(seed) +BAREBOX_CMD_HELP_TEXT("Seed the pseudo random number generator") +BAREBOX_CMD_HELP_END + +BAREBOX_CMD_START(seed) + .cmd = do_seed, + BAREBOX_CMD_DESC("seed the PRNG") + BAREBOX_CMD_OPTS("VALUE") + BAREBOX_CMD_GROUP(CMD_GRP_MISC) + BAREBOX_CMD_HELP(cmd_seed_help) +BAREBOX_CMD_END -- cgit v1.2.3