2007-09-16 09:13:16 +00:00
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/*
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2007-10-16 17:07:21 +00:00
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* timeout - wait for timeout
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2007-09-16 09:13:16 +00:00
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*
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* Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <linux/stat.h>
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#include <errno.h>
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#include <getopt.h>
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#include <clock.h>
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#define TIMEOUT_RETURN (1 << 0)
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#define TIMEOUT_CTRLC (1 << 1)
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#define TIMEOUT_ANYKEY (1 << 2)
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#define TIMEOUT_SILENT (1 << 3)
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2007-09-24 10:31:08 +00:00
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static int do_timeout(cmd_tbl_t *cmdtp, int argc, char *argv[])
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2007-09-16 09:13:16 +00:00
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{
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int timeout = 3, ret = 1;
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int flags = 0, opt, countdown;
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uint64_t start, second;
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while((opt = getopt(argc, argv, "t:crsa")) > 0) {
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switch(opt) {
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case 'r':
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flags |= TIMEOUT_RETURN;
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break;
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case 'c':
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flags |= TIMEOUT_CTRLC;
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break;
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case 'a':
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flags |= TIMEOUT_ANYKEY;
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break;
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case 's':
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flags |= TIMEOUT_SILENT;
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break;
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default:
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return 1;
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}
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}
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2009-10-17 10:44:19 +00:00
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if (optind == argc)
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return COMMAND_ERROR_USAGE;
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2007-09-16 09:13:16 +00:00
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timeout = simple_strtoul(argv[optind], NULL, 0);
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start = get_time_ns();
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second = start;
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countdown = timeout;
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if (!(flags & TIMEOUT_SILENT))
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printf("%2d", countdown--);
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2007-10-04 16:35:53 +00:00
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do {
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2007-09-16 09:13:16 +00:00
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if (tstc()) {
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int key = getc();
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if (flags & TIMEOUT_CTRLC && key == 3)
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goto out;
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if (flags & TIMEOUT_ANYKEY)
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goto out;
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if (flags & TIMEOUT_RETURN && key == '\n')
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goto out;
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}
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if (!(flags & TIMEOUT_SILENT) && is_timeout(second, SECOND)) {
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printf("\b\b%2d", countdown--);
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second += SECOND;
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}
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2007-10-04 16:35:53 +00:00
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} while (!is_timeout(start, timeout * SECOND));
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2007-09-16 09:13:16 +00:00
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ret = 0;
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out:
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if (!(flags & TIMEOUT_SILENT))
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printf("\n");
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return ret;
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}
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2008-04-04 09:46:55 +00:00
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static const __maybe_unused char cmd_timeout_help[] =
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2007-09-16 09:13:16 +00:00
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"Usage: timeout [OPTION]... <timeout>\n"
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"Wait <timeout> seconds for a timeout. Return 1 if the user intervented\n"
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"or 0 if a timeout occured\n"
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" -a interrupt on any key\n"
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" -c interrupt on ctrl-c\n"
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" -r interrupt on return\n"
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" -s silent mode\n";
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U_BOOT_CMD_START(timeout)
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.cmd = do_timeout,
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.usage = "wait for a specified timeout",
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U_BOOT_CMD_HELP(cmd_timeout_help)
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U_BOOT_CMD_END
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