From e5e99c463e0ef3e4ad7ba8cea4125183073fabb1 Mon Sep 17 00:00:00 2001 From: Hans Dedecker Date: Mon, 19 Jun 2017 11:14:27 +0200 Subject: watchdog: add support for starting/stopping kernel watchdog Extend the ubus watchdog cmd with the parameter magicclose; when set and in case the stopped parameter is enabled the kernel watchdog will be stopped by first sending the magic character 'V' followed by a close of the watchdog fd. In case stopped is set to disabled the watchdog fd will be created again. Signed-off-by: Hans Dedecker Acked-by: John Crispin --- system.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'system.c') diff --git a/system.c b/system.c index 6e85ad7..6cd2b62 100644 --- a/system.c +++ b/system.c @@ -279,6 +279,7 @@ static int system_reboot(struct ubus_context *ctx, struct ubus_object *obj, enum { WDT_FREQUENCY, WDT_TIMEOUT, + WDT_MAGICCLOSE, WDT_STOP, __WDT_MAX }; @@ -286,6 +287,7 @@ enum { static const struct blobmsg_policy watchdog_policy[__WDT_MAX] = { [WDT_FREQUENCY] = { .name = "frequency", .type = BLOBMSG_TYPE_INT32 }, [WDT_TIMEOUT] = { .name = "timeout", .type = BLOBMSG_TYPE_INT32 }, + [WDT_MAGICCLOSE] = { .name = "magicclose", .type = BLOBMSG_TYPE_BOOL }, [WDT_STOP] = { .name = "stop", .type = BLOBMSG_TYPE_BOOL }, }; @@ -320,6 +322,9 @@ static int watchdog_set(struct ubus_context *ctx, struct ubus_object *obj, watchdog_timeout(timeout); } + if (tb[WDT_MAGICCLOSE]) + watchdog_set_magicclose(blobmsg_get_bool(tb[WDT_MAGICCLOSE])); + if (tb[WDT_STOP]) watchdog_set_stopped(blobmsg_get_bool(tb[WDT_STOP])); @@ -334,6 +339,7 @@ static int watchdog_set(struct ubus_context *ctx, struct ubus_object *obj, blobmsg_add_string(&b, "status", status); blobmsg_add_u32(&b, "timeout", watchdog_timeout(0)); blobmsg_add_u32(&b, "frequency", watchdog_frequency(0)); + blobmsg_add_u8(&b, "magicclose", watchdog_get_magicclose()); ubus_send_reply(ctx, req, b.head); return 0; -- cgit v1.2.1