add a system_init function for system control

4 files changed, 18 insertions, 3 deletions

diff --git a/main.c b/main.c
index 7602f23..e008f64 100644
--- a/main.c
+++ b/main.c
@@ -7,6 +7,7 @@
 #include "netifd.h"
 #include "ubus.h"
 #include "config.h"
+#include "system.h"
 #include "interface.h"
 
 const char *main_path = ".";
@@ -63,6 +64,11 @@ int main(int argc, char **argv)
 		return 1;
 	}
 
+	if (system_init()) {
+		fprintf(stderr, "Failed to initialize system control\n");
+		return 1;
+	}
+
 	config_init_interfaces(NULL);
 
 	uloop_run();
diff --git a/system-dummy.c b/system-dummy.c
index 5aa51c0..a5d352d 100644
--- a/system-dummy.c
+++ b/system-dummy.c
@@ -11,6 +11,11 @@
 #include "device.h"
 #include "system.h"
 
+int system_init(void)
+{
+	return 0;
+}
+
 int system_bridge_addbr(struct device *bridge)
 {
 	DPRINTF("brctl addbr %s\n", bridge->ifname);
diff --git a/system-linux.c b/system-linux.c
index 1dbb651..d09fd63 100644
--- a/system-linux.c
+++ b/system-linux.c
@@ -19,7 +19,7 @@
 static int sock_ioctl = -1;
 static struct nl_sock *sock_rtnl = NULL;
 
-static void __init system_init(void)
+int system_init(void)
 {
 	sock_ioctl = socket(AF_LOCAL, SOCK_DGRAM, 0);
 	fcntl(sock_ioctl, F_SETFD, fcntl(sock_ioctl, F_GETFD) | FD_CLOEXEC);
@@ -30,12 +30,14 @@ static void __init system_init(void)
 			sock_rtnl = NULL;
 		}
 	}
+
+	return -(sock_ioctl < 0 || !sock_rtnl);
 }
 
 static int system_rtnl_call(struct nl_msg *msg)
 {
-	return -!!(!sock_rtnl || nl_send_auto_complete(sock_rtnl, msg)
-					|| nl_wait_for_ack(sock_rtnl));
+	return -(nl_send_auto_complete(sock_rtnl, msg)
+			|| nl_wait_for_ack(sock_rtnl));
 }
 
 int system_bridge_addbr(struct device *bridge)
diff --git a/system.h b/system.h
index 8658467..c9b28c8 100644
--- a/system.h
+++ b/system.h
@@ -5,6 +5,8 @@
 #include "device.h"
 #include "interface-ip.h"
 
+int system_init(void);
+
 int system_bridge_addbr(struct device *bridge);
 int system_bridge_delbr(struct device *bridge);
 int system_bridge_addif(struct device *bridge, struct device *dev);