diff --git a/lsof-4.85/Makefile b/lsof-4.85/Makefile
new file mode 100644
index 0000000..94b018c
--- /dev/null
+++ b/lsof-4.85/Makefile
@@ -0,0 +1,115 @@
+#
+#    Copyright (c) 2010-2011 Nest, Inc.
+#    All rights reserved.
+#
+#    This document is the property of Nest. It is considered
+#    confidential and proprietary information.
+#
+#    This document may not be reproduced or transmitted in any form,
+#    in whole or in part, without the express written permission of
+#    Nest.
+#
+#    Description:
+#      This file is the makefile for the "list open files" (lsof) utility.
+#
+
+BuildConfigSpecialized	:= No
+BuildProductSpecialized	:= No
+
+include pre.mak
+
+PackageName		:= lsof
+
+PackageExtension	:= tar.bz2
+PackageSeparator	:= _
+
+PackagePatchArgs	:= -g 0 -p2
+
+PackageArchive		:= $(PackageName).$(PackageExtension)
+PackageWrapperDir	:= $(PackageName)$(PackageSeparator)$(PackageVersion)
+
+PackageSourceArchive	:= $(PackageWrapperDir)/$(PackageName)$(PackageSeparator)$(PackageVersion)$(PackageSeparator)src.tar
+PackageSourceDir	:= $(PackageWrapperDir)/$(PackageName)$(PackageSeparator)$(PackageVersion)$(PackageSeparator)src
+
+PackageBuildMakefile	= $(call GenerateBuildPaths,Configure)
+
+CleanPaths		+= $(PackageLicenseFile)
+
+all: $(PackageDefaultGoal)
+
+# Expand the wrapper directory which contains another archive
+# containing the source.
+
+$(PackageSourceArchive): $(PackageArchive)
+	$(call expand-archive,$(<),.)
+	$(Verbose)touch $(@)
+
+# Generate the package license contents.
+
+$(PackageSourceDir)/00README: source
+
+$(PackageLicenseFile): $(PackageSourceDir)/00README
+	$(Verbose)$(SED) -n -e '/^License$$/,/\*\/$$/{;p;/\*\/$$/q;}' < $< > $@
+
+# Extract the source from the archive and apply patches, if any.
+
+$(PackageSourceDir): $(PackageSourceArchive)
+	$(call expand-archive,$(<),$(PackageWrapperDir))
+	$(Verbose)touch $(@)
+	$(call patch-directory,$(@),$(PackagePatchArgs),$(PackagePatchPaths))
+
+# Prepare the sources.
+
+.PHONY: source
+source: | $(PackageSourceDir)
+
+# Patch the sources, if necessary.
+
+.PHONY: patch
+patch: source
+
+# Generate the package build makefile.
+
+$(PackageBuildMakefile): | $(PackageSourceDir) $(BuildDirectory)
+	$(call create-links,$(CURDIR)/$(PackageSourceDir),$(BuildDirectory))
+
+# Configure the source for building.
+
+.PHONY: configure
+configure: source $(PackageBuildMakefile)
+	$(Verbose)cd $(BuildDirectory) && \
+	LSOF_CC=$(CC) \
+	LINUX_CLIB="-DGLIBCV=211" \
+	LSOF_INCLUDE="$(ToolIncDir)" \
+	LSOF_LINUX_INCL="$(call GenerateResultPaths,sw/tps/linux,include)" \
+	./Configure \
+	-n \
+	$(TargetOS)
+
+# Build the source.
+#
+# We have to unset MAKEFLAGS since they confuse the package build otherwise.
+
+.PHONY: build
+build: configure
+	$(Verbose)unset MAKEFLAGS && \
+	$(MAKE) -C $(BuildDirectory) \
+	CC=$(CC) \
+	all
+
+# Stage the build to a temporary installation area.
+#
+# We have to unset MAKEFLAGS since they confuse the package build otherwise.
+
+.PHONY: stage
+stage: build | $(ResultDirectory)
+	$(Verbose)unset MAKEFLAGS && \
+	$(MAKE) -C $(BuildDirectory) DESTDIR=$(ResultDirectory) install
+
+clean:
+	$(Verbose)$(RM) $(RMFLAGS) -r $(PackageSourceDir)
+	$(Verbose)$(RM) $(RMFLAGS) -r $(PackageWrapperDir)
+	$(Verbose)$(RM) $(RMFLAGS) -r $(BuildDirectory)
+	$(Verbose)$(RM) $(RMFLAGS) -r $(ResultDirectory)
+
+include post.mak
diff --git a/lsof-4.85/lsof.patches.tar.gz b/lsof-4.85/lsof.patches.tar.gz
new file mode 100644
index 0000000..e16fde4
--- /dev/null
+++ b/lsof-4.85/lsof.patches.tar.gz
Binary files differ
diff --git a/lsof-4.85/lsof.tar.bz2 b/lsof-4.85/lsof.tar.bz2
new file mode 100644
index 0000000..b7f32ad
--- /dev/null
+++ b/lsof-4.85/lsof.tar.bz2
Binary files differ
diff --git a/lsof-4.85/lsof.url b/lsof-4.85/lsof.url
new file mode 100644
index 0000000..ea4a69c
--- /dev/null
+++ b/lsof-4.85/lsof.url
@@ -0,0 +1 @@
+ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/lsof_4.85.tar.bz2
diff --git a/lsof-4.85/lsof.version b/lsof-4.85/lsof.version
new file mode 100644
index 0000000..12cf98e
--- /dev/null
+++ b/lsof-4.85/lsof.version
@@ -0,0 +1 @@
+4.85