Assign more suitable types and fix narrowing conversion warns.

[tinc] / src / uml_device.c

diff --git a/src/uml_device.c b/src/uml_device.c
index a675b62..a8bedc0 100644 (file)
--- a/src/uml_device.c
+++ b/src/uml_device.c
@@ -47,10 +47,14 @@ static struct request {
        struct sockaddr_un sock;
 } request;
 
-static struct sockaddr_un data_sun;
+static struct sockaddr_un data_sun = {
+       .sun_family = AF_UNIX,
+};
 
 static bool setup_device(void) {
-       struct sockaddr_un listen_sun;
+       struct sockaddr_un listen_sun = {
+               .sun_family = AF_UNIX,
+       };
        static const int one = 1;
        struct {
                char zero;
@@ -104,8 +108,7 @@ static bool setup_device(void) {
        name.zero = 0;
        name.pid = getpid();
        gettimeofday(&tv, NULL);
-       name.usecs = tv.tv_usec;
-       data_sun.sun_family = AF_UNIX;
+       name.usecs = (int) tv.tv_usec;
        memcpy(&data_sun.sun_path, &name, sizeof(name));
 
        if(bind(data_fd, (struct sockaddr *)&data_sun, sizeof(data_sun)) < 0) {
@@ -131,9 +134,12 @@ static bool setup_device(void) {
                return false;
        }
 
-       listen_sun.sun_family = AF_UNIX;
+       if(strlen(device) >= sizeof(listen_sun.sun_path)) {
+               logger(DEBUG_ALWAYS, LOG_ERR, "UML socket filename %s is too long!", device);
+               return false;
+       }
+
        strncpy(listen_sun.sun_path, device, sizeof(listen_sun.sun_path));
-       listen_sun.sun_path[sizeof(listen_sun.sun_path) - 1] = 0;
 
        if(bind(listen_fd, (struct sockaddr *)&listen_sun, sizeof(listen_sun)) < 0) {
                logger(DEBUG_ALWAYS, LOG_ERR, "Could not bind %s to %s: %s", device_info, device, strerror(errno));
@@ -190,7 +196,7 @@ void close_device(void) {
 }
 
 static bool read_packet(vpn_packet_t *packet) {
-       int inlen;
+       ssize_t inlen;
 
        switch(state) {
        case 0: {