Kernel/LibC: Implement basic ioctl for network addresses

kernel/include/kernel/FS/Inode.h

@@ -112,6 +112,8 @@ namespace Kernel
 		BAN::ErrorOr<void> chown(uid_t, gid_t);
 		bool has_data() const;
 
+		BAN::ErrorOr<long> ioctl(int request, void* arg);
+
 	protected:
 		virtual void on_close_impl() {}
 
@@ -138,6 +140,8 @@ namespace Kernel
 		virtual BAN::ErrorOr<void> chown_impl(uid_t, gid_t)					{ return BAN::Error::from_errno(ENOTSUP); }
 		virtual bool has_data_impl() const { dwarnln("nonblock not supported"); return true; }
 
+		virtual BAN::ErrorOr<long> ioctl_impl(int request, void* arg)		{ return BAN::Error::from_errno(ENOTSUP); }
+
 	protected:
 		mutable RecursivePrioritySpinLock m_lock;
 

kernel/include/kernel/Networking/NetworkInterface.h

@@ -11,6 +11,9 @@ namespace Kernel
 
 	class NetworkInterface : public CharacterDevice
 	{
+		BAN_NON_COPYABLE(NetworkInterface);
+		BAN_NON_MOVABLE(NetworkInterface);
+
 	public:
 		enum class Type
 		{
@@ -22,7 +25,12 @@ namespace Kernel
 		virtual ~NetworkInterface() {}
 
 		virtual BAN::MACAddress get_mac_address() const = 0;
+
 		BAN::IPv4Address get_ipv4_address() const { return m_ipv4_address; }
+		void set_ipv4_address(BAN::IPv4Address new_address) { m_ipv4_address = new_address; }
+
+		BAN::IPv4Address get_netmask() const { return m_netmask; }
+		void set_netmask(BAN::IPv4Address new_netmask) { m_netmask = new_netmask; }
 
 		virtual bool link_up() = 0;
 		virtual int link_speed() = 0;
@@ -42,6 +50,7 @@ namespace Kernel
 		char m_name[10];
 
 		BAN::IPv4Address m_ipv4_address { 0 };
+		BAN::IPv4Address m_netmask { 0 };
 	};
 
 }

kernel/include/kernel/Networking/NetworkSocket.h

@@ -35,6 +35,8 @@ namespace Kernel
 		virtual BAN::ErrorOr<ssize_t> sendto_impl(const sys_sendto_t*) override;
 		virtual BAN::ErrorOr<ssize_t> recvfrom_impl(sys_recvfrom_t*) override;
 
+		virtual BAN::ErrorOr<long> ioctl_impl(int request, void* arg) override;
+
 	protected:
 		NetworkInterface*	m_interface	= nullptr;
 		uint16_t			m_port		= PORT_NONE;

kernel/include/kernel/Process.h

@@ -117,6 +117,8 @@ namespace Kernel
 		BAN::ErrorOr<long> sys_sendto(const sys_sendto_t*);
 		BAN::ErrorOr<long> sys_recvfrom(sys_recvfrom_t*);
 
+		BAN::ErrorOr<long> sys_ioctl(int fildes, int request, void* arg);
+
 		BAN::ErrorOr<long> sys_pipe(int fildes[2]);
 		BAN::ErrorOr<long> sys_dup(int fildes);
 		BAN::ErrorOr<long> sys_dup2(int fildes, int fildes2);