Check result of write() in sendkeys

Author: jepler

src/hal/user_comps/sendkeys.c

@@ -62,7 +62,7 @@ void emit(int fd, int type, int code, int val)
    ie.type = type;
    ie.code = code;
    ie.value = val;
-   write(fd, &ie, sizeof(ie));
+   if (write(fd, &ie, sizeof(ie)) != sizeof(ie)) perror("write(event)");
 }
 
 static void exit_handler(int sig) {
@@ -262,7 +262,9 @@ int main(int argc, char* argv[]) {
                 uidev.id.product = 0x1;
                 uidev.id.version = 1;
 
-                write(param->fd, &uidev, sizeof(uidev));
+                if(write(param->fd, &uidev, sizeof(uidev)) != sizeof(uidev)) {
+                    perror("write(uidev)");
+                };
                 ioctl(param->fd, UI_DEV_CREATE);
                 param->inited = 1;
             }