Userland: Set the mask of a network adapter with ifconfig (#1388)

A new IP address or a new network mask can be specified in the command
line arguments of ifconfig to replace the old values of a given network
adapter. Additionally, more information is being printed for each adapter.

2 files changed, 35 insertions, 0 deletions

diff --git a/Libraries/LibC/net/if.h b/Libraries/LibC/net/if.h
index edb3482764..9161e2def9 100644
--- a/Libraries/LibC/net/if.h
+++ b/Libraries/LibC/net/if.h
@@ -38,6 +38,7 @@ struct ifreq {
         struct sockaddr ifru_addr;
         struct sockaddr ifru_dstaddr;
         struct sockaddr ifru_broadaddr;
+        struct sockaddr ifru_netmask;
         struct sockaddr ifru_hwaddr;
         short ifru_flags;
         int ifru_metric;
@@ -49,6 +50,7 @@ struct ifreq {
 #define ifr_addr ifr_ifru.ifru_addr           // address
 #define ifr_dstaddr ifr_ifru.ifru_dstaddr     // other end of p-to-p link
 #define ifr_broadaddr ifr_ifru.ifru_broadaddr // broadcast address
+#define ifr_netmask ifr_ifru.ifru_netmask     // network mask
 #define ifr_flags ifr_ifru.ifru_flags         // flags
 #define ifr_metric ifr_ifru.ifru_metric       // metric
 #define ifr_mtu ifr_ifru.ifru_metric          // mtu (overload)
diff --git a/Libraries/LibC/net/route.h b/Libraries/LibC/net/route.h
new file mode 100644
index 0000000000..1434243aab
--- /dev/null
+++ b/Libraries/LibC/net/route.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2020, Marios Prokopakis <mariosprokopakis@gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+#include <sys/socket.h>
+
+struct rtentry {
+    struct sockaddr* rt_gateway;
+    /* FIXME: complete the struct */
+};