add a ubus handler that allows sending signals to processes

[project/procd.git] / system.c

diff --git a/system.c b/system.c
index e1f4a64..0b3c466 100644 (file)
--- a/system.c
+++ b/system.c
@@ -18,7 +18,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
-
+#include <signal.h>
 #include <unistd.h>
 
 #include <libubox/uloop.h>
@@ -27,8 +27,6 @@
 #include "watchdog.h"
 #include "hotplug.h"
 
-#define HOSTNAME_PATH  "/proc/sys/kernel/hostname"
-
 static struct blob_buf b;
 
 static int system_board(struct ubus_context *ctx, struct ubus_object *obj,
@@ -260,30 +258,30 @@ static int watchdog_set(struct ubus_context *ctx, struct ubus_object *obj,
 }
 
 enum {
-       EVENT_TYPE,
-       EVENT_DATA,
-       __EVENT_MAX
+       SIGNAL_PID,
+       SIGNAL_NUM,
+       __SIGNAL_MAX
 };
 
-static const struct blobmsg_policy event_policy[__WDT_MAX] = {
-       [EVENT_TYPE] = { .name = "frequency", .type = BLOBMSG_TYPE_INT32 },
-       [EVENT_DATA] = { .name = "timeout", .type = BLOBMSG_TYPE_INT32 },
+static const struct blobmsg_policy signal_policy[__WDT_MAX] = {
+       [SIGNAL_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
+       [SIGNAL_NUM] = { .name = "signum", .type = BLOBMSG_TYPE_INT32 },
 };
 
-static int system_event(struct ubus_context *ctx, struct ubus_object *obj,
+static int proc_signal(struct ubus_context *ctx, struct ubus_object *obj,
                        struct ubus_request_data *req, const char *method,
                        struct blob_attr *msg)
 {
-       struct blob_attr *tb[__EVENT_MAX];
+       struct blob_attr *tb[__SIGNAL_MAX];
 
        if (!msg)
                return UBUS_STATUS_INVALID_ARGUMENT;
 
-       blobmsg_parse(event_policy, __EVENT_MAX, tb, blob_data(msg), blob_len(msg));
-       if (!tb[EVENT_TYPE])
+       blobmsg_parse(signal_policy, __SIGNAL_MAX, tb, blob_data(msg), blob_len(msg));
+       if (!tb[SIGNAL_PID || !tb[SIGNAL_NUM]])
                return UBUS_STATUS_INVALID_ARGUMENT;
 
-       fprintf(stderr, "%s\n", blobmsg_get_string(tb[EVENT_TYPE]));
+       kill(blobmsg_get_u32(tb[SIGNAL_PID]), blobmsg_get_u32(tb[SIGNAL_NUM]));
 
        return 0;
 }
@@ -293,7 +291,7 @@ static const struct ubus_method system_methods[] = {
        UBUS_METHOD_NOARG("info",  system_info),
        UBUS_METHOD_NOARG("upgrade", system_upgrade),
        UBUS_METHOD("watchdog", watchdog_set, watchdog_policy),
-       UBUS_METHOD("event", system_event, event_policy),
+       UBUS_METHOD("signal", proc_signal, signal_policy),
 };
 
 static struct ubus_object_type system_object_type =