watchdog: add support for starting/stopping watchdog refresh

[project/procd.git] / system.c

diff --git a/system.c b/system.c
index c35f75a..658dd5e 100644 (file)
--- a/system.c
+++ b/system.c
@@ -58,12 +58,14 @@ static int system_info(struct ubus_context *ctx, struct ubus_object *obj,
 enum {
        WDT_FREQUENCY,
        WDT_TIMEOUT,
+       WDT_STOP,
        __WDT_MAX
 };
 
 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_STOP] = { .name = "stop", .type = BLOBMSG_TYPE_BOOL },
 };
 
 static int watchdog_set(struct ubus_context *ctx, struct ubus_object *obj,
@@ -71,6 +73,7 @@ static int watchdog_set(struct ubus_context *ctx, struct ubus_object *obj,
                        struct blob_attr *msg)
 {
        struct blob_attr *tb[__WDT_MAX];
+       const char *status;
 
        if (!msg)
                return UBUS_STATUS_INVALID_ARGUMENT;
@@ -96,8 +99,18 @@ static int watchdog_set(struct ubus_context *ctx, struct ubus_object *obj,
                 watchdog_timeout(timeout);
        }
 
+       if (tb[WDT_STOP])
+               watchdog_set_stopped(blobmsg_get_bool(tb[WDT_STOP]));
+
+       if (watchdog_fd() < 0)
+               status = "offline";
+       else if (watchdog_get_stopped())
+               status = "stopped";
+       else
+               status = "running";
+
        blob_buf_init(&b, 0);
-       blobmsg_add_string(&b, "status", (watchdog_fd() >= 0) ? ("running") : ("offline"));
+       blobmsg_add_string(&b, "status", status);
        blobmsg_add_u32(&b, "timeout", watchdog_timeout(0));
        blobmsg_add_u32(&b, "frequency", watchdog_frequency(0));
        ubus_send_reply(ctx, req, b.head);