Show pid

Signed-off-by: Adrien Gallouët <adrien@gallouet.fr>

src/bind.c

@@ -202,7 +202,9 @@ gt_bind(int argc, char **argv)
     fd_set_nonblock(mud_fd);
     fd_set_nonblock(ctl_fd);
 
-    gt_log("running...\n");
+    const long pid = (long)getpid();
+
+    gt_log("running on device %s as pid %li\n", tun_name, pid);
 
     fd_set rfds;
     FD_ZERO(&rfds);
@@ -286,6 +288,7 @@ gt_bind(int argc, char **argv)
                         res.ret = errno;
                     break;
                 case CTL_STATUS:
+                    res.status.pid = pid;
                     res.status.mtu = mtu;
                     res.status.chacha = chacha;
                     res.status.bind = bind_addr;

src/ctl.h

@@ -26,6 +26,7 @@ struct ctl_msg {
         } path;
         struct mud_path path_status;
         struct {
+            long pid;
             size_t mtu;
             int chacha;
             struct sockaddr_storage bind;

src/show.c

@@ -29,21 +29,25 @@ gt_show_dev_status(int fd, const char *dev)
 
     if (server) {
         printf("server %s:\n"
+               "  pid:       %li\n"
                "  bind:      %s port %"PRIu16"\n"
                "  mtu:       %zu\n"
                "  cipher:    %s\n",
                dev,
+               res.status.pid,
                bindstr[0] ? bindstr : "-",
                gt_get_port((struct sockaddr *)&res.status.bind),
                res.status.mtu,
                res.status.chacha ? "chacha20poly1305" : "aes256gcm");
     } else {
         printf("client %s:\n"
+               "  pid:       %li\n"
                "  bind:      %s port %"PRIu16"\n"
                "  peer:      %s port %"PRIu16"\n"
                "  mtu:       %zu\n"
                "  cipher:    %s\n",
                dev,
+               res.status.pid,
                bindstr[0] ? bindstr : "-",
                gt_get_port((struct sockaddr *)&res.status.bind),
                peerstr[0] ? peerstr : "-",