watchdog: add support for starting/stopping kernel watchdog

[project/procd.git] / system.c

diff --git a/system.c b/system.c
index 77111f90cacac7f8d3b0e9a7bb147b7e0117493d..869e3950db05035abaf331c9c27b138d75df3cff 100644 (file)
--- a/system.c
+++ b/system.c
@@ -13,9 +13,12 @@
  */
 
 #include <sys/utsname.h>
+#ifdef linux
 #include <sys/sysinfo.h>
+#endif
 #include <sys/ioctl.h>
 #include <sys/types.h>
+#include <sys/reboot.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <signal.h>
@@ -112,6 +115,40 @@ static int system_board(struct ubus_context *ctx, struct ubus_object *obj,
                fclose(f);
        }
 
+       if ((f = fopen("/tmp/sysinfo/board_name", "r")) != NULL)
+       {
+               if (fgets(line, sizeof(line), f))
+               {
+                       val = strtok(line, "\t\n");
+
+                       if (val)
+                               blobmsg_add_string(&b, "board_name", val);
+               }
+
+               fclose(f);
+       }
+       else if ((f = fopen("/proc/device-tree/compatible", "r")) != NULL)
+       {
+               if (fgets(line, sizeof(line), f))
+               {
+                       val = strtok(line, "\t\n");
+
+                       if (val)
+                       {
+                               next = val;
+                               while ((next = strchr(next, ',')) != NULL)
+                               {
+                                       *next = '-';
+                                       next++;
+                               }
+
+                               blobmsg_add_string(&b, "board_name", val);
+                       }
+               }
+
+               fclose(f);
+       }
+
        if ((f = fopen("/etc/openwrt_release", "r")) != NULL)
        {
                c = blobmsg_open_table(&b, "release");
@@ -144,6 +181,11 @@ static int system_board(struct ubus_context *ctx, struct ubus_object *obj,
                                continue;
 
                        dest = blobmsg_alloc_string_buffer(&b, key, strlen(val));
+                       if (!dest) {
+                               ERROR("Failed to allocate blob.\n");
+                               continue;
+                       }
+
                        while (val && (ch = *(val++)) != 0) {
                                switch (ch) {
                                case '\'':
@@ -181,23 +223,27 @@ static int system_info(struct ubus_context *ctx, struct ubus_object *obj,
                 struct ubus_request_data *req, const char *method,
                 struct blob_attr *msg)
 {
-       void *c;
        time_t now;
        struct tm *tm;
+#ifdef linux
        struct sysinfo info;
+       void *c;
+
+       if (sysinfo(&info))
+               return UBUS_STATUS_UNKNOWN_ERROR;
+#endif
 
        now = time(NULL);
 
        if (!(tm = localtime(&now)))
                return UBUS_STATUS_UNKNOWN_ERROR;
 
-       if (sysinfo(&info))
-               return UBUS_STATUS_UNKNOWN_ERROR;
-
        blob_buf_init(&b, 0);
 
+       blobmsg_add_u32(&b, "localtime", now + tm->tm_gmtoff);
+
+#ifdef linux
        blobmsg_add_u32(&b, "uptime",    info.uptime);
-       blobmsg_add_u32(&b, "localtime", mktime(tm));
 
        c = blobmsg_open_array(&b, "load");
        blobmsg_add_u32(&b, NULL, info.loads[0]);
@@ -216,6 +262,7 @@ static int system_info(struct ubus_context *ctx, struct ubus_object *obj,
        blobmsg_add_u64(&b, "total",    info.mem_unit * info.totalswap);
        blobmsg_add_u64(&b, "free",     info.mem_unit * info.freeswap);
        blobmsg_close_table(&b, c);
+#endif
 
        ubus_send_reply(ctx, req, b.head);
 
@@ -230,9 +277,18 @@ static int system_upgrade(struct ubus_context *ctx, struct ubus_object *obj,
        return 0;
 }
 
+static int system_reboot(struct ubus_context *ctx, struct ubus_object *obj,
+                        struct ubus_request_data *req, const char *method,
+                        struct blob_attr *msg)
+{
+       procd_shutdown(RB_AUTOBOOT);
+       return 0;
+}
+
 enum {
        WDT_FREQUENCY,
        WDT_TIMEOUT,
+       WDT_MAGICCLOSE,
        WDT_STOP,
        __WDT_MAX
 };
@@ -240,6 +296,7 @@ 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 },
 };
 
@@ -274,10 +331,13 @@ 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]));
 
-       if (watchdog_fd() < 0)
+       if (watchdog_fd() == NULL)
                status = "offline";
        else if (watchdog_get_stopped())
                status = "stopped";
@@ -288,6 +348,7 @@ 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;
@@ -376,6 +437,7 @@ static const struct ubus_method system_methods[] = {
        UBUS_METHOD_NOARG("board", system_board),
        UBUS_METHOD_NOARG("info",  system_info),
        UBUS_METHOD_NOARG("upgrade", system_upgrade),
+       UBUS_METHOD_NOARG("reboot", system_reboot),
        UBUS_METHOD("watchdog", watchdog_set, watchdog_policy),
        UBUS_METHOD("signal", proc_signal, signal_policy),