Add basic build structure for Unix domain sockets

net/Kconfig

@@ -202,6 +202,7 @@ endmenu # Internet Protocol Selection
 
 source "net/socket/Kconfig"
 source "net/pkt/Kconfig"
+source "net/local/Kconfig"
 source "net/tcp/Kconfig"
 source "net/udp/Kconfig"
 source "net/icmp/Kconfig"

net/Makefile

@@ -63,9 +63,10 @@ include icmp/Make.defs
 include icmpv6/Make.defs
 include neighbor/Make.defs
 include igmp/Make.defs
+include pkt/Make.defs
+include local/Make.defs
 include tcp/Make.defs
 include udp/Make.defs
-include pkt/Make.defs
 include devif/Make.defs
 include route/Make.defs
 include utils/Make.defs

net/README.txt

@@ -13,6 +13,7 @@ Directory Structure
        +- icmp     - Internet Control Message Protocol (IPv4)
        +- icmpv6   - Internet Control Message Protocol (IPv6)
        +- iob      - I/O buffering logic
+       +- local    - Unix domain (local) sockets
        +- neighbor - Neighbor Discovery Protocol (IPv6)
        +- netdev   - Socket network device interface
        +- pkt      - "Raw" packet socket support

net/local/Kconfig

@@ -0,0 +1,19 @@
+#
+# For a description of the syntax of this configuration file,
+# see misc/tools/kconfig-language.txt.
+#
+
+menu "Unix Domain Socket Support"
+	depends on NET && EXPERIMENTAL
+
+config NET_LOCAL
+	bool "Unix domain (local) sockets"
+	default n
+	---help---
+		Enable or disable Unix domain (aka Local) sockets.
+
+if NET_LOCAL
+
+endif # NET_LOCAL
+
+endmenu # Unix Domain Sockets

net/local/Make.defs

@@ -0,0 +1,47 @@
+############################################################################
+# net/local/Make.defs
+#
+#   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# 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.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# 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 OWNER 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.
+#
+############################################################################
+
+# UDP source files
+
+ifeq ($(CONFIG_NET_LOCAL),y)
+
+# NET_CSRCS += 
+
+# Include UDP build support
+
+DEPPATH += --dep-path local
+VPATH += :local
+
+endif # CONFIG_NET_LOCAL