@@ -642,11 +642,10 @@ run_updown_runner(bool up, struct options *o, const struct tuntap *tt,

         while (1)

         {

-            ssize_t rlen, wlen;

             char path[PATH_MAX];

             /* Block here until parent sends a path */

-            rlen = read(dns_pipe_fd[0], &path, sizeof(path));

+            ssize_t rlen = read(dns_pipe_fd[0], &path, sizeof(path));

             if (rlen < 1)

             {

                 if (rlen == -1 && errno == EINTR)

@@ -665,8 +664,8 @@ run_updown_runner(bool up, struct options *o, const struct tuntap *tt,

             /* Unblock parent process */

             while (1)

             {

-                wlen = write(ack_pipe_fd[1], &res, sizeof(res));

-                if ((wlen == -1 && errno != EINTR) || wlen < sizeof(res))

+                ssize_t wlen = write(ack_pipe_fd[1], &res, sizeof(res));

+                if ((wlen == -1 && errno != EINTR) || wlen < (ssize_t)sizeof(res))

                 {

                     /* Not much we can do about errors but exit */

                     close(dns_pipe_fd[0]);

@@ -727,7 +726,7 @@ run_up_down_command(bool up, struct options *o, const struct tuntap *tt,

         env_set_write_file(dvf, es);

         int wfd = updown_runner->fds[1];

-        size_t dvf_size = strlen(dvf) + 1;

+        ssize_t dvf_size = strlen(dvf) + 1;

         while (1)

         {

             ssize_t len = write(wfd, dvf, dvf_size);

@@ -746,7 +745,7 @@ run_up_down_command(bool up, struct options *o, const struct tuntap *tt,

         while (1)

         {

             ssize_t len = read(rfd, &status, sizeof(status));

-            if (len < sizeof(status))

+            if (len < (ssize_t)sizeof(status))

             {

                 if (len == -1 && errno == EINTR)

                 {