From 9e0f7acfe5d7529cf65d86cfd229780aca8c3694 Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Sun, 16 Jun 2019 07:06:49 +0200
Subject: Kernel+Userland: Expose list of network adapters through
 /proc/netadapters.

Added a simple /bin/ifconfig program that just pretty-prints that file. :^)
---
 Kernel/FileSystem/ProcFS.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'Kernel/FileSystem')

diff --git a/Kernel/FileSystem/ProcFS.cpp b/Kernel/FileSystem/ProcFS.cpp
index f1cc2c74aa..c042b5abb7 100644
--- a/Kernel/FileSystem/ProcFS.cpp
+++ b/Kernel/FileSystem/ProcFS.cpp
@@ -9,6 +9,7 @@
 #include <Kernel/FileSystem/Custody.h>
 #include <Kernel/FileSystem/FileDescription.h>
 #include <Kernel/FileSystem/VirtualFileSystem.h>
+#include <Kernel/Net/NetworkAdapter.h>
 #include <Kernel/PCI.h>
 #include <Kernel/VM/MemoryManager.h>
 #include <Kernel/kmalloc.h>
@@ -40,6 +41,7 @@ enum ProcFileType {
     FI_Root_dmesg,
     FI_Root_pci,
     FI_Root_uptime,
+    FI_Root_netadapters,
     FI_Root_self, // symlink
     FI_Root_sys,  // directory
     __FI_Root_End,
@@ -251,6 +253,19 @@ ByteBuffer procfs$uptime(InodeIdentifier)
     return builder.to_byte_buffer();
 }
 
+ByteBuffer procfs$netadapters(InodeIdentifier)
+{
+    StringBuilder builder;
+    NetworkAdapter::for_each([&builder](auto& adapter) {
+        builder.appendf("%s,%s,%s,%s\n",
+            adapter.name().characters(),
+            adapter.class_name(),
+            adapter.mac_address().to_string().characters(),
+            adapter.ipv4_address().to_string().characters());
+    });
+    return builder.to_byte_buffer();
+}
+
 ByteBuffer procfs$pid_vmo(InodeIdentifier identifier)
 {
     auto handle = ProcessInspectionHandle::from_pid(to_pid(identifier));
@@ -1098,6 +1113,7 @@ ProcFS::ProcFS()
     m_entries[FI_Root_self] = { "self", FI_Root_self, procfs$self };
     m_entries[FI_Root_pci] = { "pci", FI_Root_pci, procfs$pci };
     m_entries[FI_Root_uptime] = { "uptime", FI_Root_uptime, procfs$uptime };
+    m_entries[FI_Root_netadapters] = { "netadapters", FI_Root_netadapters, procfs$netadapters };
     m_entries[FI_Root_sys] = { "sys", FI_Root_sys };
 
     m_entries[FI_PID_vm] = { "vm", FI_PID_vm, procfs$pid_vm };
-- 
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