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authorSascha Hauer <sha@octopus.labnet.pengutronix.de>2007-09-16 11:13:16 +0200
committerSascha Hauer <sha@octopus.labnet.pengutronix.de>2007-09-16 11:13:16 +0200
commit1ef73a95bedb32f82017e8891ff917d47396021e (patch)
tree8d1718bf64aa7903a0802bdefa183922bd291000 /commands/timeout.c
parent1bc16dbb01449c72fb78d8990ce91e9d1f2ff608 (diff)
downloadbarebox-1ef73a95bedb32f82017e8891ff917d47396021e.tar.gz
add timeout command
Diffstat (limited to 'commands/timeout.c')
-rw-r--r--commands/timeout.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/commands/timeout.c b/commands/timeout.c
new file mode 100644
index 0000000..2f7ce03
--- /dev/null
+++ b/commands/timeout.c
@@ -0,0 +1,115 @@
+/*
+ * ls.c - list files and directories
+ *
+ * Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <common.h>
+#include <command.h>
+#include <linux/stat.h>
+#include <errno.h>
+#include <getopt.h>
+#include <clock.h>
+
+#define TIMEOUT_RETURN (1 << 0)
+#define TIMEOUT_CTRLC (1 << 1)
+#define TIMEOUT_ANYKEY (1 << 2)
+#define TIMEOUT_SILENT (1 << 3)
+
+static int do_timeout(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ int timeout = 3, ret = 1;
+ int flags = 0, opt, countdown;
+ uint64_t start, second;
+
+ getopt_reset();
+
+ while((opt = getopt(argc, argv, "t:crsa")) > 0) {
+ switch(opt) {
+ case 'r':
+ flags |= TIMEOUT_RETURN;
+ break;
+ case 'c':
+ flags |= TIMEOUT_CTRLC;
+ break;
+ case 'a':
+ flags |= TIMEOUT_ANYKEY;
+ break;
+ case 's':
+ flags |= TIMEOUT_SILENT;
+ break;
+ default:
+ return 1;
+ }
+ }
+
+ if (optind == argc) {
+ u_boot_cmd_usage(cmdtp);
+ return 1;
+ }
+
+ timeout = simple_strtoul(argv[optind], NULL, 0);
+
+ start = get_time_ns();
+ second = start;
+
+ countdown = timeout;
+
+ if (!(flags & TIMEOUT_SILENT))
+ printf("%2d", countdown--);
+
+ while (!is_timeout(start, timeout * SECOND)) {
+ if (tstc()) {
+ int key = getc();
+ if (flags & TIMEOUT_CTRLC && key == 3)
+ goto out;
+ if (flags & TIMEOUT_ANYKEY)
+ goto out;
+ if (flags & TIMEOUT_RETURN && key == '\n')
+ goto out;
+ }
+ if (!(flags & TIMEOUT_SILENT) && is_timeout(second, SECOND)) {
+ printf("\b\b%2d", countdown--);
+ second += SECOND;
+ }
+ }
+
+ ret = 0;
+out:
+ if (!(flags & TIMEOUT_SILENT))
+ printf("\n");
+
+ return ret;
+}
+
+static __maybe_unused char cmd_timeout_help[] =
+"Usage: timeout [OPTION]... <timeout>\n"
+"Wait <timeout> seconds for a timeout. Return 1 if the user intervented\n"
+"or 0 if a timeout occured\n"
+" -a interrupt on any key\n"
+" -c interrupt on ctrl-c\n"
+" -r interrupt on return\n"
+" -s silent mode\n";
+
+U_BOOT_CMD_START(timeout)
+ .maxargs = CONFIG_MAXARGS,
+ .cmd = do_timeout,
+ .usage = "wait for a specified timeout",
+ U_BOOT_CMD_HELP(cmd_timeout_help)
+U_BOOT_CMD_END
+