Initial commit

.gitignore

@@ -0,0 +1,34 @@
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP shares
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+# Xcode
+xcuserdata/
+*.xcodeproj/*
+!*.xcodeproj/project.pbxproj
+!*.xcodeproj/xcshareddata/
+!*.xcworkspace/contents.xcworkspacedata
+**/xcshareddata/WorkspaceSettings.xcsettings
+

LoopbackFS-C/LICENSE.txt

@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.

LoopbackFS-C/loopback.xcodeproj/project.pbxproj

@@ -0,0 +1,308 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 46;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		436C6B011C59595E00C4FE10 /* loopback.c in Sources */ = {isa = PBXBuildFile; fileRef = 436C6B001C59595E00C4FE10 /* loopback.c */; };
+		43E954082649F92C009CCB55 /* libfuse.2.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = 43E954072649F92C009CCB55 /* libfuse.2.dylib */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXFileReference section */
+		436C6AFD1C59595E00C4FE10 /* loopback */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = loopback; sourceTree = BUILT_PRODUCTS_DIR; };
+		436C6B001C59595E00C4FE10 /* loopback.c */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.c; path = loopback.c; sourceTree = "<group>"; };
+		43ADB58922817D2200B49726 /* loopback.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = loopback.entitlements; sourceTree = "<group>"; };
+		43E953B12646EC9A009CCB55 /* LICENSE.txt */ = {isa = PBXFileReference; lastKnownFileType = text; path = LICENSE.txt; sourceTree = "<group>"; };
+		43E954072649F92C009CCB55 /* libfuse.2.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; name = libfuse.2.dylib; path = ../../../../../../../usr/local/lib/libfuse.2.dylib; sourceTree = "<group>"; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		436C6AFA1C59595E00C4FE10 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				43E954082649F92C009CCB55 /* libfuse.2.dylib in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		436C6AF41C59595E00C4FE10 = {
+			isa = PBXGroup;
+			children = (
+				43E953B12646EC9A009CCB55 /* LICENSE.txt */,
+				436C6AFF1C59595E00C4FE10 /* loopback */,
+				43E954062649F92C009CCB55 /* Frameworks */,
+				436C6AFE1C59595E00C4FE10 /* Products */,
+			);
+			sourceTree = "<group>";
+		};
+		436C6AFE1C59595E00C4FE10 /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				436C6AFD1C59595E00C4FE10 /* loopback */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
+		436C6AFF1C59595E00C4FE10 /* loopback */ = {
+			isa = PBXGroup;
+			children = (
+				43ADB58922817D2200B49726 /* loopback.entitlements */,
+				436C6B001C59595E00C4FE10 /* loopback.c */,
+			);
+			path = loopback;
+			sourceTree = "<group>";
+		};
+		43E954062649F92C009CCB55 /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				43E954072649F92C009CCB55 /* libfuse.2.dylib */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
+/* End PBXGroup section */
+
+/* Begin PBXNativeTarget section */
+		436C6AFC1C59595E00C4FE10 /* loopback */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 436C6B041C59595E00C4FE10 /* Build configuration list for PBXNativeTarget "loopback" */;
+			buildPhases = (
+				436C6AF91C59595E00C4FE10 /* Sources */,
+				436C6AFA1C59595E00C4FE10 /* Frameworks */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = loopback;
+			productName = loopback;
+			productReference = 436C6AFD1C59595E00C4FE10 /* loopback */;
+			productType = "com.apple.product-type.tool";
+		};
+/* End PBXNativeTarget section */
+
+/* Begin PBXProject section */
+		436C6AF51C59595E00C4FE10 /* Project object */ = {
+			isa = PBXProject;
+			attributes = {
+				LastUpgradeCheck = 1240;
+				ORGANIZATIONNAME = "Benjamin Fleischer";
+				TargetAttributes = {
+					436C6AFC1C59595E00C4FE10 = {
+						CreatedOnToolsVersion = 7.2;
+						ProvisioningStyle = Manual;
+					};
+				};
+			};
+			buildConfigurationList = 436C6AF81C59595E00C4FE10 /* Build configuration list for PBXProject "loopback" */;
+			compatibilityVersion = "Xcode 3.2";
+			developmentRegion = en;
+			hasScannedForEncodings = 0;
+			knownRegions = (
+				en,
+				Base,
+			);
+			mainGroup = 436C6AF41C59595E00C4FE10;
+			productRefGroup = 436C6AFE1C59595E00C4FE10 /* Products */;
+			projectDirPath = "";
+			projectRoot = "";
+			targets = (
+				436C6AFC1C59595E00C4FE10 /* loopback */,
+			);
+		};
+/* End PBXProject section */
+
+/* Begin PBXSourcesBuildPhase section */
+		436C6AF91C59595E00C4FE10 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				436C6B011C59595E00C4FE10 /* loopback.c in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXSourcesBuildPhase section */
+
+/* Begin XCBuildConfiguration section */
+		436C6B021C59595E00C4FE10 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				CODE_SIGN_IDENTITY = "-";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = dwarf;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_TESTABILITY = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"DEBUG=1",
+					"$(inherited)",
+				);
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MTL_ENABLE_DEBUG_INFO = YES;
+				ONLY_ACTIVE_ARCH = YES;
+				SDKROOT = macosx;
+			};
+			name = Debug;
+		};
+		436C6B031C59595E00C4FE10 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				CODE_SIGN_IDENTITY = "-";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				SDKROOT = macosx;
+			};
+			name = Release;
+		};
+		436C6B051C59595E00C4FE10 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_ENTITLEMENTS = loopback/loopback.entitlements;
+				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_STYLE = Manual;
+				DEVELOPMENT_TEAM = "";
+				ENABLE_HARDENED_RUNTIME = YES;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"$(inherited)",
+					"_FILE_OFFSET_BITS=64",
+					_DARWIN_USE_64_BIT_INODE,
+				);
+				GCC_WARN_64_TO_32_BIT_CONVERSION = NO;
+				HEADER_SEARCH_PATHS = "\"/usr/local/include\"";
+				LD_RUNPATH_SEARCH_PATHS = "@executable_path/";
+				LIBRARY_SEARCH_PATHS = "\"/usr/local/lib\"";
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
+				OTHER_CODE_SIGN_FLAGS = "--timestamp";
+				PRODUCT_BUNDLE_IDENTIFIER = "io.macfuse.demo.loopbackfs-c";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				PROVISIONING_PROFILE_SPECIFIER = "";
+			};
+			name = Debug;
+		};
+		436C6B061C59595E00C4FE10 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_ENTITLEMENTS = loopback/loopback.entitlements;
+				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_STYLE = Manual;
+				DEVELOPMENT_TEAM = "";
+				ENABLE_HARDENED_RUNTIME = YES;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"$(inherited)",
+					"_FILE_OFFSET_BITS=64",
+					_DARWIN_USE_64_BIT_INODE,
+				);
+				GCC_WARN_64_TO_32_BIT_CONVERSION = NO;
+				HEADER_SEARCH_PATHS = "\"/usr/local/include\"";
+				LD_RUNPATH_SEARCH_PATHS = "@executable_path/";
+				LIBRARY_SEARCH_PATHS = "\"/usr/local/lib\"";
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
+				OTHER_CODE_SIGN_FLAGS = "--timestamp";
+				PRODUCT_BUNDLE_IDENTIFIER = "io.macfuse.demo.loopbackfs-c";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				PROVISIONING_PROFILE_SPECIFIER = "";
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		436C6AF81C59595E00C4FE10 /* Build configuration list for PBXProject "loopback" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				436C6B021C59595E00C4FE10 /* Debug */,
+				436C6B031C59595E00C4FE10 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		436C6B041C59595E00C4FE10 /* Build configuration list for PBXNativeTarget "loopback" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				436C6B051C59595E00C4FE10 /* Debug */,
+				436C6B061C59595E00C4FE10 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 436C6AF51C59595E00C4FE10 /* Project object */;
+}

LoopbackFS-C/loopback.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:loopback.xcodeproj">
+   </FileRef>
+</Workspace>

LoopbackFS-C/loopback.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

LoopbackFS-C/loopback.xcodeproj/xcshareddata/xcschemes/loopback.xcscheme

@@ -0,0 +1,123 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1240"
+   version = "1.7">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "436C6AFC1C59595E00C4FE10"
+               BuildableName = "loopback"
+               BlueprintName = "loopback"
+               ReferencedContainer = "container:loopback.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "436C6AFC1C59595E00C4FE10"
+            BuildableName = "loopback"
+            BlueprintName = "loopback"
+            ReferencedContainer = "container:loopback.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <PreActions>
+         <ExecutionAction
+            ActionType = "Xcode.IDEStandardExecutionActionsCore.ExecutionActionType.ShellScriptAction">
+            <ActionContent
+               title = "Run Script"
+               scriptText = "# Unmount volumes&#10;umount -A -t &quot;${OSXFUSE_NAME}&quot;&#10;&#10;# Create source directory and mount point&#10;mkdir -p /tmp/dir&#10;mkdir -p /Volumes/loop">
+               <EnvironmentBuildable>
+                  <BuildableReference
+                     BuildableIdentifier = "primary"
+                     BlueprintIdentifier = "436C6AFC1C59595E00C4FE10"
+                     BuildableName = "loopback"
+                     BlueprintName = "loopback"
+                     ReferencedContainer = "container:loopback.xcodeproj">
+                  </BuildableReference>
+               </EnvironmentBuildable>
+            </ActionContent>
+         </ExecutionAction>
+      </PreActions>
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "436C6AFC1C59595E00C4FE10"
+            BuildableName = "loopback"
+            BlueprintName = "loopback"
+            ReferencedContainer = "container:loopback.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <CommandLineArguments>
+         <CommandLineArgument
+            argument = "-omodules=threadid:subdir,subdir=/tmp/dir"
+            isEnabled = "YES">
+         </CommandLineArgument>
+         <CommandLineArgument
+            argument = "-oallow_other,native_xattr,volname=loopback"
+            isEnabled = "YES">
+         </CommandLineArgument>
+         <CommandLineArgument
+            argument = "-f"
+            isEnabled = "YES">
+         </CommandLineArgument>
+         <CommandLineArgument
+            argument = "/Volumes/loop"
+            isEnabled = "YES">
+         </CommandLineArgument>
+      </CommandLineArguments>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "436C6AFC1C59595E00C4FE10"
+            BuildableName = "loopback"
+            BlueprintName = "loopback"
+            ReferencedContainer = "container:loopback.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

LoopbackFS-C/loopback/loopback.c

@@ -0,0 +1,980 @@
+/*
+ FUSE: Filesystem in Userspace
+ Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
+ 
+ This program can be distributed under the terms of the GNU GPL.
+ See the file LICENSE.txt.
+ 
+ */
+
+/*
+ * Loopback macFUSE file system in C. Uses the high-level FUSE API.
+ * Based on the fusexmp_fh.c example from the Linux FUSE distribution.
+ * Amit Singh <http://osxbook.com>
+ */
+
+#include <AvailabilityMacros.h>
+
+#define HAVE_EXCHANGE 0
+#define HAVE_RENAMEX 1
+
+#define FUSE_USE_VERSION 26
+
+#define _GNU_SOURCE
+
+#include <fuse.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <errno.h>
+#include <sys/time.h>
+#include <sys/xattr.h>
+#include <sys/attr.h>
+#include <sys/param.h>
+#include <sys/vnode.h>
+
+#if defined(_POSIX_C_SOURCE)
+typedef unsigned char  u_char;
+typedef unsigned short u_short;
+typedef unsigned int   u_int;
+typedef unsigned long  u_long;
+#endif
+
+#define G_PREFIX                       "org"
+#define G_KAUTH_FILESEC_XATTR G_PREFIX ".apple.system.Security"
+#define A_PREFIX                       "com"
+#define A_KAUTH_FILESEC_XATTR A_PREFIX ".apple.system.Security"
+#define XATTR_APPLE_PREFIX             "com.apple."
+
+struct loopback {
+    int case_insensitive;
+};
+
+static struct loopback loopback;
+
+static int
+loopback_getattr(const char *path, struct stat *stbuf)
+{
+    int res;
+    
+    res = lstat(path, stbuf);
+    
+    /*
+     * The optimal I/O size can be set on a per-file basis. Setting st_blksize
+     * to zero will cause the kernel extension to fall back on the global I/O
+     * size which can be specified at mount-time (option iosize).
+     */
+    stbuf->st_blksize = 0;
+    
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_fgetattr(const char *path, struct stat *stbuf,
+                  struct fuse_file_info *fi)
+{
+    int res;
+    
+    (void)path;
+    
+    res = fstat(fi->fh, stbuf);
+    
+    // Fall back to global I/O size. See loopback_getattr().
+    stbuf->st_blksize = 0;
+    
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_readlink(const char *path, char *buf, size_t size)
+{
+    int res;
+    
+    res = readlink(path, buf, size - 1);
+    if (res == -1) {
+        return -errno;
+    }
+    
+    buf[res] = '\0';
+    
+    return 0;
+}
+
+struct loopback_dirp {
+    DIR *dp;
+    struct dirent *entry;
+    off_t offset;
+};
+
+static int
+loopback_opendir(const char *path, struct fuse_file_info *fi)
+{
+    int res;
+    
+    struct loopback_dirp *d = malloc(sizeof(struct loopback_dirp));
+    if (d == NULL) {
+        return -ENOMEM;
+    }
+    
+    d->dp = opendir(path);
+    if (d->dp == NULL) {
+        res = -errno;
+        free(d);
+        return res;
+    }
+    
+    d->offset = 0;
+    d->entry = NULL;
+    
+    fi->fh = (unsigned long)d;
+    
+    return 0;
+}
+
+static inline struct loopback_dirp *
+get_dirp(struct fuse_file_info *fi)
+{
+    return (struct loopback_dirp *)(uintptr_t)fi->fh;
+}
+
+static int
+loopback_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
+                 off_t offset, struct fuse_file_info *fi)
+{
+    struct loopback_dirp *d = get_dirp(fi);
+    
+    (void)path;
+    
+    if (offset == 0) {
+        rewinddir(d->dp);
+        d->entry = NULL;
+        d->offset = 0;
+    } else if (offset != d->offset) {
+        seekdir(d->dp, offset);
+        d->entry = NULL;
+        d->offset = offset;
+    }
+    
+    while (1) {
+        struct stat st;
+        off_t nextoff;
+        
+        if (!d->entry) {
+            d->entry = readdir(d->dp);
+            if (!d->entry) {
+                break;
+            }
+        }
+        
+        memset(&st, 0, sizeof(st));
+        st.st_ino = d->entry->d_ino;
+        st.st_mode = d->entry->d_type << 12;
+        nextoff = telldir(d->dp);
+        if (filler(buf, d->entry->d_name, &st, nextoff)) {
+            break;
+        }
+        
+        d->entry = NULL;
+        d->offset = nextoff;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_releasedir(const char *path, struct fuse_file_info *fi)
+{
+    struct loopback_dirp *d = get_dirp(fi);
+    
+    (void)path;
+    
+    closedir(d->dp);
+    free(d);
+    
+    return 0;
+}
+
+static int
+loopback_mknod(const char *path, mode_t mode, dev_t rdev)
+{
+    int res;
+    
+    if (S_ISFIFO(mode)) {
+        res = mkfifo(path, mode);
+    } else {
+        res = mknod(path, mode, rdev);
+    }
+    
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_mkdir(const char *path, mode_t mode)
+{
+    int res;
+    
+    res = mkdir(path, mode);
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_unlink(const char *path)
+{
+    int res;
+    
+    res = unlink(path);
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_rmdir(const char *path)
+{
+    int res;
+    
+    res = rmdir(path);
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_symlink(const char *from, const char *to)
+{
+    int res;
+    
+    res = symlink(from, to);
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_rename(const char *from, const char *to)
+{
+    int res;
+    
+    res = rename(from, to);
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+#if HAVE_EXCHANGE
+
+static int
+loopback_exchange(const char *path1, const char *path2, unsigned long options)
+{
+    int res;
+
+    res = exchangedata(path1, path2, options);
+    if (res == -1) {
+        return -errno;
+    }
+
+    return 0;
+}
+
+#endif /* HAVE_EXCHANGE */
+
+static int
+loopback_link(const char *from, const char *to)
+{
+    int res;
+    
+    res = link(from, to);
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_fsetattr_x(const char *path, struct setattr_x *attr,
+                    struct fuse_file_info *fi)
+{
+    int res;
+    uid_t uid = -1;
+    gid_t gid = -1;
+    
+    if (SETATTR_WANTS_MODE(attr)) {
+        res = fchmod(fi->fh, attr->mode);
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_UID(attr)) {
+        uid = attr->uid;
+    }
+    
+    if (SETATTR_WANTS_GID(attr)) {
+        gid = attr->gid;
+    }
+    
+    if ((uid != -1) || (gid != -1)) {
+        res = fchown(fi->fh, uid, gid);
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_SIZE(attr)) {
+        res = ftruncate(fi->fh, attr->size);
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_MODTIME(attr)) {
+        struct timeval tv[2];
+        if (!SETATTR_WANTS_ACCTIME(attr)) {
+            gettimeofday(&tv[0], NULL);
+        } else {
+            tv[0].tv_sec = attr->acctime.tv_sec;
+            tv[0].tv_usec = attr->acctime.tv_nsec / 1000;
+        }
+        tv[1].tv_sec = attr->modtime.tv_sec;
+        tv[1].tv_usec = attr->modtime.tv_nsec / 1000;
+        res = futimes(fi->fh, tv);
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_CRTIME(attr)) {
+        struct attrlist attributes;
+        
+        attributes.bitmapcount = ATTR_BIT_MAP_COUNT;
+        attributes.reserved = 0;
+        attributes.commonattr = ATTR_CMN_CRTIME;
+        attributes.dirattr = 0;
+        attributes.fileattr = 0;
+        attributes.forkattr = 0;
+        attributes.volattr = 0;
+        
+        res = fsetattrlist(fi->fh, &attributes, &attr->crtime,
+                           sizeof(struct timespec), FSOPT_NOFOLLOW);
+        
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_CHGTIME(attr)) {
+        struct attrlist attributes;
+        
+        attributes.bitmapcount = ATTR_BIT_MAP_COUNT;
+        attributes.reserved = 0;
+        attributes.commonattr = ATTR_CMN_CHGTIME;
+        attributes.dirattr = 0;
+        attributes.fileattr = 0;
+        attributes.forkattr = 0;
+        attributes.volattr = 0;
+        
+        res = fsetattrlist(fi->fh, &attributes, &attr->chgtime,
+                           sizeof(struct timespec), FSOPT_NOFOLLOW);
+        
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_BKUPTIME(attr)) {
+        struct attrlist attributes;
+        
+        attributes.bitmapcount = ATTR_BIT_MAP_COUNT;
+        attributes.reserved = 0;
+        attributes.commonattr = ATTR_CMN_BKUPTIME;
+        attributes.dirattr = 0;
+        attributes.fileattr = 0;
+        attributes.forkattr = 0;
+        attributes.volattr = 0;
+        
+        res = fsetattrlist(fi->fh, &attributes, &attr->bkuptime,
+                           sizeof(struct timespec), FSOPT_NOFOLLOW);
+        
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_FLAGS(attr)) {
+        res = fchflags(fi->fh, attr->flags);
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    return 0;
+}
+
+static int
+loopback_setattr_x(const char *path, struct setattr_x *attr)
+{
+    int res;
+    uid_t uid = -1;
+    gid_t gid = -1;
+    
+    if (SETATTR_WANTS_MODE(attr)) {
+        res = lchmod(path, attr->mode);
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_UID(attr)) {
+        uid = attr->uid;
+    }
+    
+    if (SETATTR_WANTS_GID(attr)) {
+        gid = attr->gid;
+    }
+    
+    if ((uid != -1) || (gid != -1)) {
+        res = lchown(path, uid, gid);
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_SIZE(attr)) {
+        res = truncate(path, attr->size);
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_MODTIME(attr)) {
+        struct timeval tv[2];
+        if (!SETATTR_WANTS_ACCTIME(attr)) {
+            gettimeofday(&tv[0], NULL);
+        } else {
+            tv[0].tv_sec = attr->acctime.tv_sec;
+            tv[0].tv_usec = attr->acctime.tv_nsec / 1000;
+        }
+        tv[1].tv_sec = attr->modtime.tv_sec;
+        tv[1].tv_usec = attr->modtime.tv_nsec / 1000;
+        res = lutimes(path, tv);
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_CRTIME(attr)) {
+        struct attrlist attributes;
+        
+        attributes.bitmapcount = ATTR_BIT_MAP_COUNT;
+        attributes.reserved = 0;
+        attributes.commonattr = ATTR_CMN_CRTIME;
+        attributes.dirattr = 0;
+        attributes.fileattr = 0;
+        attributes.forkattr = 0;
+        attributes.volattr = 0;
+        
+        res = setattrlist(path, &attributes, &attr->crtime,
+                          sizeof(struct timespec), FSOPT_NOFOLLOW);
+        
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_CHGTIME(attr)) {
+        struct attrlist attributes;
+        
+        attributes.bitmapcount = ATTR_BIT_MAP_COUNT;
+        attributes.reserved = 0;
+        attributes.commonattr = ATTR_CMN_CHGTIME;
+        attributes.dirattr = 0;
+        attributes.fileattr = 0;
+        attributes.forkattr = 0;
+        attributes.volattr = 0;
+        
+        res = setattrlist(path, &attributes, &attr->chgtime,
+                          sizeof(struct timespec), FSOPT_NOFOLLOW);
+        
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_BKUPTIME(attr)) {
+        struct attrlist attributes;
+        
+        attributes.bitmapcount = ATTR_BIT_MAP_COUNT;
+        attributes.reserved = 0;
+        attributes.commonattr = ATTR_CMN_BKUPTIME;
+        attributes.dirattr = 0;
+        attributes.fileattr = 0;
+        attributes.forkattr = 0;
+        attributes.volattr = 0;
+        
+        res = setattrlist(path, &attributes, &attr->bkuptime,
+                          sizeof(struct timespec), FSOPT_NOFOLLOW);
+        
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    if (SETATTR_WANTS_FLAGS(attr)) {
+        res = lchflags(path, attr->flags);
+        if (res == -1) {
+            return -errno;
+        }
+    }
+    
+    return 0;
+}
+
+static int
+loopback_getxtimes(const char *path, struct timespec *bkuptime,
+                   struct timespec *crtime)
+{
+    int res = 0;
+    struct attrlist attributes;
+    
+    attributes.bitmapcount = ATTR_BIT_MAP_COUNT;
+    attributes.reserved    = 0;
+    attributes.commonattr  = 0;
+    attributes.dirattr     = 0;
+    attributes.fileattr    = 0;
+    attributes.forkattr    = 0;
+    attributes.volattr     = 0;
+    
+    
+    
+    struct xtimeattrbuf {
+        uint32_t size;
+        struct timespec xtime;
+    } __attribute__ ((packed));
+    
+    
+    struct xtimeattrbuf buf;
+    
+    attributes.commonattr = ATTR_CMN_BKUPTIME;
+    res = getattrlist(path, &attributes, &buf, sizeof(buf), FSOPT_NOFOLLOW);
+    if (res == 0) {
+        (void)memcpy(bkuptime, &(buf.xtime), sizeof(struct timespec));
+    } else {
+        (void)memset(bkuptime, 0, sizeof(struct timespec));
+    }
+    
+    attributes.commonattr = ATTR_CMN_CRTIME;
+    res = getattrlist(path, &attributes, &buf, sizeof(buf), FSOPT_NOFOLLOW);
+    if (res == 0) {
+        (void)memcpy(crtime, &(buf.xtime), sizeof(struct timespec));
+    } else {
+        (void)memset(crtime, 0, sizeof(struct timespec));
+    }
+    
+    return 0;
+}
+
+static int
+loopback_create(const char *path, mode_t mode, struct fuse_file_info *fi)
+{
+    int fd;
+    
+    fd = open(path, fi->flags, mode);
+    if (fd == -1) {
+        return -errno;
+    }
+    
+    fi->fh = fd;
+    return 0;
+}
+
+static int
+loopback_open(const char *path, struct fuse_file_info *fi)
+{
+    int fd;
+    
+    fd = open(path, fi->flags);
+    if (fd == -1) {
+        return -errno;
+    }
+    
+    fi->fh = fd;
+    return 0;
+}
+
+static int
+loopback_read(const char *path, char *buf, size_t size, off_t offset,
+              struct fuse_file_info *fi)
+{
+    int res;
+    
+    (void)path;
+    res = pread(fi->fh, buf, size, offset);
+    if (res == -1) {
+        res = -errno;
+    }
+    
+    return res;
+}
+
+static int
+loopback_write(const char *path, const char *buf, size_t size,
+               off_t offset, struct fuse_file_info *fi)
+{
+    int res;
+    
+    (void)path;
+    
+    res = pwrite(fi->fh, buf, size, offset);
+    if (res == -1) {
+        res = -errno;
+    }
+    
+    return res;
+}
+
+static int
+loopback_statfs(const char *path, struct statvfs *stbuf)
+{
+    int res;
+    
+    res = statvfs(path, stbuf);
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_flush(const char *path, struct fuse_file_info *fi)
+{
+    int res;
+    
+    (void)path;
+    
+    res = close(dup(fi->fh));
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_release(const char *path, struct fuse_file_info *fi)
+{
+    (void)path;
+    
+    close(fi->fh);
+    
+    return 0;
+}
+
+static int
+loopback_fsync(const char *path, int isdatasync, struct fuse_file_info *fi)
+{
+    int res;
+    
+    (void)path;
+    
+    (void)isdatasync;
+    
+    res = fsync(fi->fh);
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_setxattr(const char *path, const char *name, const char *value,
+                  size_t size, int flags, uint32_t position)
+{
+    int res;
+    
+    if (!strncmp(name, XATTR_APPLE_PREFIX, sizeof(XATTR_APPLE_PREFIX) - 1)) {
+        flags &= ~(XATTR_NOSECURITY);
+    }
+    
+    if (!strcmp(name, A_KAUTH_FILESEC_XATTR)) {
+        
+        char new_name[MAXPATHLEN];
+        
+        memcpy(new_name, A_KAUTH_FILESEC_XATTR, sizeof(A_KAUTH_FILESEC_XATTR));
+        memcpy(new_name, G_PREFIX, sizeof(G_PREFIX) - 1);
+        
+        res = setxattr(path, new_name, value, size, position, XATTR_NOFOLLOW);
+        
+    } else {
+        res = setxattr(path, name, value, size, position, XATTR_NOFOLLOW);
+    }
+    
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_getxattr(const char *path, const char *name, char *value, size_t size,
+                  uint32_t position)
+{
+    int res;
+    
+    if (strcmp(name, A_KAUTH_FILESEC_XATTR) == 0) {
+        
+        char new_name[MAXPATHLEN];
+        
+        memcpy(new_name, A_KAUTH_FILESEC_XATTR, sizeof(A_KAUTH_FILESEC_XATTR));
+        memcpy(new_name, G_PREFIX, sizeof(G_PREFIX) - 1);
+        
+        res = getxattr(path, new_name, value, size, position, XATTR_NOFOLLOW);
+        
+    } else {
+        res = getxattr(path, name, value, size, position, XATTR_NOFOLLOW);
+    }
+    
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return res;
+}
+
+static int
+loopback_listxattr(const char *path, char *list, size_t size)
+{
+    ssize_t res = listxattr(path, list, size, XATTR_NOFOLLOW);
+    if (res > 0) {
+        if (list) {
+            size_t len = 0;
+            char *curr = list;
+            do {
+                size_t thislen = strlen(curr) + 1;
+                if (strcmp(curr, G_KAUTH_FILESEC_XATTR) == 0) {
+                    memmove(curr, curr + thislen, res - len - thislen);
+                    res -= thislen;
+                    break;
+                }
+                curr += thislen;
+                len += thislen;
+            } while (len < res);
+        } else {
+            /*
+            ssize_t res2 = getxattr(path, G_KAUTH_FILESEC_XATTR, NULL, 0, 0,
+                                    XATTR_NOFOLLOW);
+            if (res2 >= 0) {
+                res -= sizeof(G_KAUTH_FILESEC_XATTR);
+            }
+            */
+        }
+    }
+    
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return res;
+}
+
+static int
+loopback_removexattr(const char *path, const char *name)
+{
+    int res;
+    
+    if (strcmp(name, A_KAUTH_FILESEC_XATTR) == 0) {
+        
+        char new_name[MAXPATHLEN];
+        
+        memcpy(new_name, A_KAUTH_FILESEC_XATTR, sizeof(A_KAUTH_FILESEC_XATTR));
+        memcpy(new_name, G_PREFIX, sizeof(G_PREFIX) - 1);
+        
+        res = removexattr(path, new_name, XATTR_NOFOLLOW);
+        
+    } else {
+        res = removexattr(path, name, XATTR_NOFOLLOW);
+    }
+    
+    if (res == -1) {
+        return -errno;
+    }
+    
+    return 0;
+}
+
+static int
+loopback_fallocate(const char *path, int mode, off_t offset, off_t length,
+                   struct fuse_file_info *fi)
+{
+    fstore_t fstore;
+    
+    if (!(mode & PREALLOCATE)) {
+        return -ENOTSUP;
+    }
+    
+    fstore.fst_flags = 0;
+    if (mode & ALLOCATECONTIG) {
+        fstore.fst_flags |= F_ALLOCATECONTIG;
+    }
+    if (mode & ALLOCATEALL) {
+        fstore.fst_flags |= F_ALLOCATEALL;
+    }
+    
+    if (mode & ALLOCATEFROMPEOF) {
+        fstore.fst_posmode = F_PEOFPOSMODE;
+    } else if (mode & ALLOCATEFROMVOL) {
+        fstore.fst_posmode = F_VOLPOSMODE;
+    }
+    
+    fstore.fst_offset = offset;
+    fstore.fst_length = length;
+    
+    if (fcntl(fi->fh, F_PREALLOCATE, &fstore) == -1) {
+        return -errno;
+    } else {
+        return 0;
+    }
+}
+
+static int
+loopback_setvolname(const char *name)
+{
+    return 0;
+}
+
+#if HAVE_RENAMEX
+
+static int
+loopback_renamex(const char *path1, const char *path2, unsigned int flags)
+{
+    int res;
+
+    res = renamex_np(path1, path2, flags);
+    if (res == -1) {
+        return -errno;
+    }
+
+    return 0;
+}
+
+#endif /* HAVE_RENAMEX */
+
+void *
+loopback_init(struct fuse_conn_info *conn)
+{
+    FUSE_ENABLE_SETVOLNAME(conn);
+    FUSE_ENABLE_XTIMES(conn);
+    
+#ifdef FUSE_ENABLE_CASE_INSENSITIVE
+    if (loopback.case_insensitive) {
+        FUSE_ENABLE_CASE_INSENSITIVE(conn);
+    }
+#endif
+    
+    return NULL;
+}
+
+void
+loopback_destroy(void *userdata)
+{
+    /* nothing */
+}
+
+static struct fuse_operations loopback_oper = {
+    .init        = loopback_init,
+    .destroy     = loopback_destroy,
+    .getattr     = loopback_getattr,
+    .fgetattr    = loopback_fgetattr,
+    /*  .access      = loopback_access, */
+    .readlink    = loopback_readlink,
+    .opendir     = loopback_opendir,
+    .readdir     = loopback_readdir,
+    .releasedir  = loopback_releasedir,
+    .mknod       = loopback_mknod,
+    .mkdir       = loopback_mkdir,
+    .symlink     = loopback_symlink,
+    .unlink      = loopback_unlink,
+    .rmdir       = loopback_rmdir,
+    .rename      = loopback_rename,
+    .link        = loopback_link,
+    .create      = loopback_create,
+    .open        = loopback_open,
+    .read        = loopback_read,
+    .write       = loopback_write,
+    .statfs      = loopback_statfs,
+    .flush       = loopback_flush,
+    .release     = loopback_release,
+    .fsync       = loopback_fsync,
+    .setxattr    = loopback_setxattr,
+    .getxattr    = loopback_getxattr,
+    .listxattr   = loopback_listxattr,
+    .removexattr = loopback_removexattr,
+#if HAVE_EXCHANGE
+    .exchange    = loopback_exchange,
+#endif
+    .getxtimes   = loopback_getxtimes,
+    .setattr_x   = loopback_setattr_x,
+    .fsetattr_x  = loopback_fsetattr_x,
+    .fallocate   = loopback_fallocate,
+    .setvolname  = loopback_setvolname,
+#if HAVE_RENAMEX
+    .renamex     = loopback_renamex,
+#endif
+    
+    .flag_nullpath_ok = 1,
+    .flag_nopath = 1,
+};
+
+static const struct fuse_opt loopback_opts[] = {
+    { "case_insensitive", offsetof(struct loopback, case_insensitive), 1 },
+    FUSE_OPT_END
+};
+
+int
+main(int argc, char *argv[])
+{
+    int res = 0;
+    struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
+    
+    loopback.case_insensitive = 0;
+    if (fuse_opt_parse(&args, &loopback, loopback_opts, NULL) == -1) {
+        exit(1);
+    }
+    
+    umask(0);
+    res = fuse_main(args.argc, args.argv, &loopback_oper, NULL);
+    
+    fuse_opt_free_args(&args);
+    return res;
+}

LoopbackFS-C/loopback/loopback.entitlements

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.cs.disable-library-validation</key>
+	<true/>
+</dict>
+</plist>

LoopbackFS-ObjC/LICENSE.txt

@@ -0,0 +1,13 @@
+Copyright 2007-2008 Google Inc.
+Copyright 2011-2021 Benjamin Fleischer
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not  use
+this file except in compliance with the License. You may obtain  a copy  of  the
+License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software  distributed
+under the License is distributed on an "AS  IS"  BASIS,  WITHOUT  WARRANTIES  OR
+CONDITIONS OF ANY KIND, either express or  implied.  See  the  License  for  the
+specific language governing permissions and limitations under the License.

LoopbackFS-ObjC/LoopbackFS.xcodeproj/project.pbxproj

@@ -0,0 +1,360 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 45;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		43C857CB264AC68C0021A8BC /* macFUSE.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 43C857CA264AC68C0021A8BC /* macFUSE.framework */; };
+		43E953A22646E241009CCB55 /* MainMenu.xib in Resources */ = {isa = PBXBuildFile; fileRef = 43E953A02646E241009CCB55 /* MainMenu.xib */; };
+		43E953C62646F170009CCB55 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 43E953C52646F170009CCB55 /* Assets.xcassets */; };
+		8B93BEEF0D3ACD4400466F25 /* NSError+POSIX.m in Sources */ = {isa = PBXBuildFile; fileRef = 8B93BEED0D3ACD4400466F25 /* NSError+POSIX.m */; };
+		8D11072D0486CEB800E47090 /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 29B97316FDCFA39411CA2CEA /* main.m */; settings = {ATTRIBUTES = (); }; };
+		FF8358230D24649E002F2357 /* LoopbackFS.m in Sources */ = {isa = PBXBuildFile; fileRef = FF8358220D24649E002F2357 /* LoopbackFS.m */; };
+		FF98B8B80D24909700117156 /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = FF98B8B70D24909700117156 /* AppDelegate.m */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXFileReference section */
+		29B97316FDCFA39411CA2CEA /* main.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = main.m; sourceTree = "<group>"; };
+		431DC7D2227DF080001A3694 /* LoopbackFS.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = LoopbackFS.entitlements; sourceTree = "<group>"; };
+		43C857CA264AC68C0021A8BC /* macFUSE.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = macFUSE.framework; path = ../../../../../../../Library/Frameworks/macFUSE.framework; sourceTree = "<group>"; };
+		43E9539D2646E1EA009CCB55 /* LICENSE.txt */ = {isa = PBXFileReference; lastKnownFileType = text; path = LICENSE.txt; sourceTree = "<group>"; };
+		43E953A12646E241009CCB55 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.xib; name = Base; path = Base.lproj/MainMenu.xib; sourceTree = "<group>"; };
+		43E953C52646F170009CCB55 /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
+		8B93BEED0D3ACD4400466F25 /* NSError+POSIX.m */ = {isa = PBXFileReference; fileEncoding = 4; indentWidth = 2; lastKnownFileType = sourcecode.c.objc; path = "NSError+POSIX.m"; sourceTree = "<group>"; tabWidth = 2; };
+		8B93BEEE0D3ACD4400466F25 /* NSError+POSIX.h */ = {isa = PBXFileReference; fileEncoding = 4; indentWidth = 2; lastKnownFileType = sourcecode.c.h; path = "NSError+POSIX.h"; sourceTree = "<group>"; tabWidth = 2; };
+		8D1107310486CEB800E47090 /* Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		8D1107320486CEB800E47090 /* LoopbackFS.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = LoopbackFS.app; sourceTree = BUILT_PRODUCTS_DIR; };
+		FF8358210D24649E002F2357 /* LoopbackFS.h */ = {isa = PBXFileReference; fileEncoding = 4; indentWidth = 2; lastKnownFileType = sourcecode.c.h; path = LoopbackFS.h; sourceTree = "<group>"; tabWidth = 2; };
+		FF8358220D24649E002F2357 /* LoopbackFS.m */ = {isa = PBXFileReference; fileEncoding = 4; indentWidth = 2; lastKnownFileType = sourcecode.c.objc; path = LoopbackFS.m; sourceTree = "<group>"; tabWidth = 2; };
+		FF98B8B60D24909700117156 /* AppDelegate.h */ = {isa = PBXFileReference; fileEncoding = 4; indentWidth = 2; lastKnownFileType = sourcecode.c.h; path = AppDelegate.h; sourceTree = "<group>"; tabWidth = 2; };
+		FF98B8B70D24909700117156 /* AppDelegate.m */ = {isa = PBXFileReference; fileEncoding = 4; indentWidth = 2; lastKnownFileType = sourcecode.c.objc; path = AppDelegate.m; sourceTree = "<group>"; tabWidth = 2; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		8D11072E0486CEB800E47090 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				43C857CB264AC68C0021A8BC /* macFUSE.framework in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		080E96DDFE201D6D7F000001 /* LoopbackFS */ = {
+			isa = PBXGroup;
+			children = (
+				FF98B8B60D24909700117156 /* AppDelegate.h */,
+				FF98B8B70D24909700117156 /* AppDelegate.m */,
+				43E953C52646F170009CCB55 /* Assets.xcassets */,
+				8D1107310486CEB800E47090 /* Info.plist */,
+				431DC7D2227DF080001A3694 /* LoopbackFS.entitlements */,
+				FF8358210D24649E002F2357 /* LoopbackFS.h */,
+				FF8358220D24649E002F2357 /* LoopbackFS.m */,
+				29B97316FDCFA39411CA2CEA /* main.m */,
+				43E953A02646E241009CCB55 /* MainMenu.xib */,
+				8B93BEEE0D3ACD4400466F25 /* NSError+POSIX.h */,
+				8B93BEED0D3ACD4400466F25 /* NSError+POSIX.m */,
+			);
+			path = LoopbackFS;
+			sourceTree = "<group>";
+		};
+		19C28FACFE9D520D11CA2CBB /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				8D1107320486CEB800E47090 /* LoopbackFS.app */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
+		29B97314FDCFA39411CA2CEA /* LoopbackFS */ = {
+			isa = PBXGroup;
+			children = (
+				43E9539D2646E1EA009CCB55 /* LICENSE.txt */,
+				080E96DDFE201D6D7F000001 /* LoopbackFS */,
+				43C857C9264AC68C0021A8BC /* Frameworks */,
+				19C28FACFE9D520D11CA2CBB /* Products */,
+			);
+			name = LoopbackFS;
+			sourceTree = "<group>";
+		};
+		43C857C9264AC68C0021A8BC /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				43C857CA264AC68C0021A8BC /* macFUSE.framework */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
+/* End PBXGroup section */
+
+/* Begin PBXNativeTarget section */
+		8D1107260486CEB800E47090 /* LoopbackFS */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = C01FCF4A08A954540054247B /* Build configuration list for PBXNativeTarget "LoopbackFS" */;
+			buildPhases = (
+				8D11072C0486CEB800E47090 /* Sources */,
+				8D11072E0486CEB800E47090 /* Frameworks */,
+				8D1107290486CEB800E47090 /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = LoopbackFS;
+			productInstallPath = "$(HOME)/Applications";
+			productName = LoopbackFS;
+			productReference = 8D1107320486CEB800E47090 /* LoopbackFS.app */;
+			productType = "com.apple.product-type.application";
+		};
+/* End PBXNativeTarget section */
+
+/* Begin PBXProject section */
+		29B97313FDCFA39411CA2CEA /* Project object */ = {
+			isa = PBXProject;
+			attributes = {
+				LastUpgradeCheck = 1240;
+				TargetAttributes = {
+					8D1107260486CEB800E47090 = {
+						SystemCapabilities = {
+							com.apple.HardenedRuntime = {
+								enabled = 1;
+							};
+						};
+					};
+				};
+			};
+			buildConfigurationList = C01FCF4E08A954540054247B /* Build configuration list for PBXProject "LoopbackFS" */;
+			compatibilityVersion = "Xcode 3.1";
+			developmentRegion = en;
+			hasScannedForEncodings = 1;
+			knownRegions = (
+				en,
+				Base,
+			);
+			mainGroup = 29B97314FDCFA39411CA2CEA /* LoopbackFS */;
+			projectDirPath = "";
+			projectRoot = "";
+			targets = (
+				8D1107260486CEB800E47090 /* LoopbackFS */,
+			);
+		};
+/* End PBXProject section */
+
+/* Begin PBXResourcesBuildPhase section */
+		8D1107290486CEB800E47090 /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				43E953C62646F170009CCB55 /* Assets.xcassets in Resources */,
+				43E953A22646E241009CCB55 /* MainMenu.xib in Resources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXResourcesBuildPhase section */
+
+/* Begin PBXSourcesBuildPhase section */
+		8D11072C0486CEB800E47090 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				8D11072D0486CEB800E47090 /* main.m in Sources */,
+				FF8358230D24649E002F2357 /* LoopbackFS.m in Sources */,
+				FF98B8B80D24909700117156 /* AppDelegate.m in Sources */,
+				8B93BEEF0D3ACD4400466F25 /* NSError+POSIX.m in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXSourcesBuildPhase section */
+
+/* Begin PBXVariantGroup section */
+		43E953A02646E241009CCB55 /* MainMenu.xib */ = {
+			isa = PBXVariantGroup;
+			children = (
+				43E953A12646E241009CCB55 /* Base */,
+			);
+			name = MainMenu.xib;
+			sourceTree = "<group>";
+		};
+/* End PBXVariantGroup section */
+
+/* Begin XCBuildConfiguration section */
+		C01FCF4B08A954540054247B /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_OBJC_ARC = NO;
+				CLANG_ENABLE_OBJC_WEAK = YES;
+				CODE_SIGN_ENTITLEMENTS = LoopbackFS/LoopbackFS.entitlements;
+				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_STYLE = Manual;
+				COPY_PHASE_STRIP = NO;
+				DEVELOPMENT_TEAM = "";
+				ENABLE_HARDENED_RUNTIME = YES;
+				FRAMEWORK_SEARCH_PATHS = /Library/Frameworks;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				INFOPLIST_FILE = LoopbackFS/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
+				PRODUCT_BUNDLE_IDENTIFIER = "io.macfuse.demo.loopbackfs-objc";
+				PRODUCT_NAME = LoopbackFS;
+				PROVISIONING_PROFILE_SPECIFIER = "";
+				WRAPPER_EXTENSION = app;
+			};
+			name = Debug;
+		};
+		C01FCF4C08A954540054247B /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_OBJC_ARC = NO;
+				CLANG_ENABLE_OBJC_WEAK = YES;
+				CODE_SIGN_ENTITLEMENTS = LoopbackFS/LoopbackFS.entitlements;
+				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_STYLE = Manual;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				DEVELOPMENT_TEAM = "";
+				ENABLE_HARDENED_RUNTIME = YES;
+				FRAMEWORK_SEARCH_PATHS = /Library/Frameworks;
+				INFOPLIST_FILE = LoopbackFS/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
+				PRODUCT_BUNDLE_IDENTIFIER = "io.macfuse.demo.loopbackfs-objc";
+				PRODUCT_NAME = LoopbackFS;
+				PROVISIONING_PROFILE_SPECIFIER = "";
+				WRAPPER_EXTENSION = app;
+			};
+			name = Release;
+		};
+		C01FCF4F08A954540054247B /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				CODE_SIGN_IDENTITY = "-";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = dwarf;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_TESTABILITY = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"DEBUG=1",
+					"$(inherited)",
+				);
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MTL_ENABLE_DEBUG_INFO = YES;
+				ONLY_ACTIVE_ARCH = YES;
+				OTHER_CODE_SIGN_FLAGS = "--timestamp";
+				SDKROOT = macosx;
+			};
+			name = Debug;
+		};
+		C01FCF5008A954540054247B /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				CODE_SIGN_IDENTITY = "-";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				OTHER_CODE_SIGN_FLAGS = "--timestamp";
+				SDKROOT = macosx;
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		C01FCF4A08A954540054247B /* Build configuration list for PBXNativeTarget "LoopbackFS" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				C01FCF4B08A954540054247B /* Debug */,
+				C01FCF4C08A954540054247B /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		C01FCF4E08A954540054247B /* Build configuration list for PBXProject "LoopbackFS" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				C01FCF4F08A954540054247B /* Debug */,
+				C01FCF5008A954540054247B /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 29B97313FDCFA39411CA2CEA /* Project object */;
+}

LoopbackFS-ObjC/LoopbackFS.xcodeproj/xcshareddata/xcschemes/LoopbackFS.xcscheme

@@ -0,0 +1,96 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1240"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "8D1107260486CEB800E47090"
+               BuildableName = "LoopbackFS.app"
+               BlueprintName = "LoopbackFS"
+               ReferencedContainer = "container:LoopbackFS.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "8D1107260486CEB800E47090"
+            BuildableName = "LoopbackFS.app"
+            BlueprintName = "LoopbackFS"
+            ReferencedContainer = "container:LoopbackFS.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <PreActions>
+         <ExecutionAction
+            ActionType = "Xcode.IDEStandardExecutionActionsCore.ExecutionActionType.ShellScriptAction">
+            <ActionContent
+               title = "Run Script"
+               scriptText = "# Unmount volumes&#10;umount -A -t &quot;${OSXFUSE_NAME}&quot;&#10;&#10;# Create source directory&#10;mkdir -p /tmp/dir">
+            </ActionContent>
+         </ExecutionAction>
+      </PreActions>
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "8D1107260486CEB800E47090"
+            BuildableName = "LoopbackFS.app"
+            BlueprintName = "LoopbackFS"
+            ReferencedContainer = "container:LoopbackFS.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "8D1107260486CEB800E47090"
+            BuildableName = "LoopbackFS.app"
+            BlueprintName = "LoopbackFS"
+            ReferencedContainer = "container:LoopbackFS.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

LoopbackFS-ObjC/LoopbackFS/AppDelegate.h

@@ -0,0 +1,33 @@
+// ================================================================
+// Copyright (C) 2007 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ================================================================
+//
+//  AppDelegate.h
+//  LoopbackFS
+//
+//  Created by ted on 12/27/07.
+//
+
+#import <Cocoa/Cocoa.h>
+#import <macFUSE/macFUSE.h>
+
+#import "LoopbackFS.h"
+
+@interface AppDelegate : NSObject {
+  GMUserFileSystem* fs_;
+  LoopbackFS* loop_;
+}
+
+@end

LoopbackFS-ObjC/LoopbackFS/AppDelegate.m

@@ -0,0 +1,118 @@
+// ================================================================
+// Copyright (C) 2007 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ================================================================
+//
+//  AppDelegate.m
+//  LoopbackFS
+//
+//  Created by ted on 12/27/07.
+//
+#import "AppDelegate.h"
+
+#import <macFUSE/macFUSE.h>
+
+#import <AvailabilityMacros.h>
+
+#import "LoopbackFS.h"
+
+static NSString *LoopbackMountPath = @"/Volumes/loop";
+
+@implementation AppDelegate
+
+- (void)mountFailed:(NSNotification *)notification {
+  NSLog(@"Got mountFailed notification.");
+
+  NSDictionary* userInfo = [notification userInfo];
+  NSError* error = [userInfo objectForKey:kGMUserFileSystemErrorKey];
+  NSLog(@"kGMUserFileSystem Error: %@, userInfo=%@", error, [error userInfo]);
+
+  dispatch_async(dispatch_get_main_queue(), ^{
+    NSAlert* alert = [[NSAlert alloc] init];
+    [alert setMessageText:@"Mount Failed"];
+    [alert setInformativeText:[error localizedDescription] ?: @"Unknown error"];
+    [alert runModal];
+    
+    [[NSApplication sharedApplication] terminate:nil];
+  });
+}
+
+- (void)didMount:(NSNotification *)notification {
+  NSLog(@"Got didMount notification.");
+
+  NSString *parentPath = [LoopbackMountPath stringByDeletingLastPathComponent];
+  [[NSWorkspace sharedWorkspace] selectFile:LoopbackMountPath
+                   inFileViewerRootedAtPath:parentPath];
+}
+
+- (void)didUnmount:(NSNotification*)notification {
+  NSLog(@"Got didUnmount notification.");
+
+  dispatch_async(dispatch_get_main_queue(), ^{
+    [[NSApplication sharedApplication] terminate:nil];
+  });
+}
+
+- (void)applicationDidFinishLaunching:(NSNotification *)notification {
+  NSOpenPanel* panel = [NSOpenPanel openPanel];
+  [panel setCanChooseFiles:NO];
+  [panel setCanChooseDirectories:YES];
+  [panel setAllowsMultipleSelection:NO];
+  [panel setDirectoryURL:[NSURL fileURLWithPath:@"/tmp"]];
+  NSModalResponse ret = [panel runModal];
+
+  if ( ret == NSModalResponseCancel ) {
+    exit(0);
+  }
+  NSArray* paths = [panel URLs];
+  if ( [paths count] != 1 ) {
+    exit(0);
+  }
+  NSString* rootPath = nil;
+  rootPath = [[paths objectAtIndex:0] path];
+
+  NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
+  [center addObserver:self selector:@selector(mountFailed:)
+                 name:kGMUserFileSystemMountFailed object:nil];
+  [center addObserver:self selector:@selector(didMount:)
+                 name:kGMUserFileSystemDidMount object:nil];
+  [center addObserver:self selector:@selector(didUnmount:)
+                 name:kGMUserFileSystemDidUnmount object:nil];
+
+  loop_ = [[LoopbackFS alloc] initWithRootPath:rootPath];
+
+  fs_ = [[GMUserFileSystem alloc] initWithDelegate:loop_ isThreadSafe:NO];
+
+  NSMutableArray* options = [NSMutableArray array];
+
+  // Do not use the 'native_xattr' mount-time option unless the underlying
+  // file system supports native extended attributes. Typically, the user
+  // would be mounting an HFS+ directory through LoopbackFS, so we do want
+  // this option in that case.
+  [options addObject:@"native_xattr"];
+
+  [options addObject:@"volname=LoopbackFS"];
+  [fs_ mountAtPath:LoopbackMountPath
+       withOptions:options];
+}
+
+- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender {
+  [[NSNotificationCenter defaultCenter] removeObserver:self];
+  [fs_ unmount];
+  [fs_ release];
+  [loop_ release];
+  return NSTerminateNow;
+}
+
+@end

LoopbackFS-ObjC/LoopbackFS/Assets.xcassets/AccentColor.colorset/Contents.json

@@ -0,0 +1,11 @@
+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

LoopbackFS-ObjC/LoopbackFS/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,58 @@
+{
+  "images" : [
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "16x16"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "16x16"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "32x32"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "32x32"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "128x128"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "128x128"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "256x256"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "256x256"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "512x512"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "512x512"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

LoopbackFS-ObjC/LoopbackFS/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

LoopbackFS-ObjC/LoopbackFS/Base.lproj/MainMenu.xib

@@ -0,0 +1,680 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="17701" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
+    <dependencies>
+        <deployment identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="17701"/>
+    </dependencies>
+    <objects>
+        <customObject id="-2" userLabel="File's Owner" customClass="NSApplication">
+            <connections>
+                <outlet property="delegate" destination="Voe-Tx-rLC" id="GzC-gU-4Uq"/>
+            </connections>
+        </customObject>
+        <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
+        <customObject id="-3" userLabel="Application"/>
+        <customObject id="Voe-Tx-rLC" customClass="AppDelegate"/>
+        <customObject id="YLy-65-1bz" customClass="NSFontManager"/>
+        <menu title="Main Menu" systemMenu="main" id="AYu-sK-qS6">
+            <items>
+                <menuItem title="LoopbackFS" id="1Xt-HY-uBw">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="LoopbackFS" systemMenu="apple" id="uQy-DD-JDr">
+                        <items>
+                            <menuItem title="About LoopbackFS" id="5kV-Vb-QxS">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="orderFrontStandardAboutPanel:" target="-1" id="Exp-CZ-Vem"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="VOq-y0-SEH"/>
+                            <menuItem title="Preferences…" keyEquivalent="," id="BOF-NM-1cW"/>
+                            <menuItem isSeparatorItem="YES" id="wFC-TO-SCJ"/>
+                            <menuItem title="Services" id="NMo-om-nkz">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Services" systemMenu="services" id="hz9-B4-Xy5"/>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="4je-JR-u6R"/>
+                            <menuItem title="Hide LoopbackFS" keyEquivalent="h" id="Olw-nP-bQN">
+                                <connections>
+                                    <action selector="hide:" target="-1" id="PnN-Uc-m68"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Hide Others" keyEquivalent="h" id="Vdr-fp-XzO">
+                                <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                <connections>
+                                    <action selector="hideOtherApplications:" target="-1" id="VT4-aY-XCT"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Show All" id="Kd2-mp-pUS">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="unhideAllApplications:" target="-1" id="Dhg-Le-xox"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="kCx-OE-vgT"/>
+                            <menuItem title="Quit LoopbackFS" keyEquivalent="q" id="4sb-4s-VLi">
+                                <connections>
+                                    <action selector="terminate:" target="-1" id="Te7-pn-YzF"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="File" id="dMs-cI-mzQ">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="File" id="bib-Uj-vzu">
+                        <items>
+                            <menuItem title="New" keyEquivalent="n" id="Was-JA-tGl">
+                                <connections>
+                                    <action selector="newDocument:" target="-1" id="4Si-XN-c54"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Open…" keyEquivalent="o" id="IAo-SY-fd9">
+                                <connections>
+                                    <action selector="openDocument:" target="-1" id="bVn-NM-KNZ"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Open Recent" id="tXI-mr-wws">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Open Recent" systemMenu="recentDocuments" id="oas-Oc-fiZ">
+                                    <items>
+                                        <menuItem title="Clear Menu" id="vNY-rz-j42">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="clearRecentDocuments:" target="-1" id="Daa-9d-B3U"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="m54-Is-iLE"/>
+                            <menuItem title="Close" keyEquivalent="w" id="DVo-aG-piG">
+                                <connections>
+                                    <action selector="performClose:" target="-1" id="HmO-Ls-i7Q"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Save…" keyEquivalent="s" id="pxx-59-PXV">
+                                <connections>
+                                    <action selector="saveDocument:" target="-1" id="teZ-XB-qJY"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Save As…" keyEquivalent="S" id="Bw7-FT-i3A">
+                                <connections>
+                                    <action selector="saveDocumentAs:" target="-1" id="mDf-zr-I0C"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Revert to Saved" keyEquivalent="r" id="KaW-ft-85H">
+                                <connections>
+                                    <action selector="revertDocumentToSaved:" target="-1" id="iJ3-Pv-kwq"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="aJh-i4-bef"/>
+                            <menuItem title="Page Setup…" keyEquivalent="P" id="qIS-W8-SiK">
+                                <modifierMask key="keyEquivalentModifierMask" shift="YES" command="YES"/>
+                                <connections>
+                                    <action selector="runPageLayout:" target="-1" id="Din-rz-gC5"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Print…" keyEquivalent="p" id="aTl-1u-JFS">
+                                <connections>
+                                    <action selector="print:" target="-1" id="qaZ-4w-aoO"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Edit" id="5QF-Oa-p0T">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Edit" id="W48-6f-4Dl">
+                        <items>
+                            <menuItem title="Undo" keyEquivalent="z" id="dRJ-4n-Yzg">
+                                <connections>
+                                    <action selector="undo:" target="-1" id="M6e-cu-g7V"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Redo" keyEquivalent="Z" id="6dh-zS-Vam">
+                                <connections>
+                                    <action selector="redo:" target="-1" id="oIA-Rs-6OD"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="WRV-NI-Exz"/>
+                            <menuItem title="Cut" keyEquivalent="x" id="uRl-iY-unG">
+                                <connections>
+                                    <action selector="cut:" target="-1" id="YJe-68-I9s"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Copy" keyEquivalent="c" id="x3v-GG-iWU">
+                                <connections>
+                                    <action selector="copy:" target="-1" id="G1f-GL-Joy"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Paste" keyEquivalent="v" id="gVA-U4-sdL">
+                                <connections>
+                                    <action selector="paste:" target="-1" id="UvS-8e-Qdg"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Paste and Match Style" keyEquivalent="V" id="WeT-3V-zwk">
+                                <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                <connections>
+                                    <action selector="pasteAsPlainText:" target="-1" id="cEh-KX-wJQ"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Delete" id="pa3-QI-u2k">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="delete:" target="-1" id="0Mk-Ml-PaM"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Select All" keyEquivalent="a" id="Ruw-6m-B2m">
+                                <connections>
+                                    <action selector="selectAll:" target="-1" id="VNm-Mi-diN"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="uyl-h8-XO2"/>
+                            <menuItem title="Find" id="4EN-yA-p0u">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Find" id="1b7-l0-nxx">
+                                    <items>
+                                        <menuItem title="Find…" tag="1" keyEquivalent="f" id="Xz5-n4-O0W">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="cD7-Qs-BN4"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Find and Replace…" tag="12" keyEquivalent="f" id="YEy-JH-Tfz">
+                                            <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="WD3-Gg-5AJ"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Find Next" tag="2" keyEquivalent="g" id="q09-fT-Sye">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="NDo-RZ-v9R"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Find Previous" tag="3" keyEquivalent="G" id="OwM-mh-QMV">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="HOh-sY-3ay"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Use Selection for Find" tag="7" keyEquivalent="e" id="buJ-ug-pKt">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="U76-nv-p5D"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Jump to Selection" keyEquivalent="j" id="S0p-oC-mLd">
+                                            <connections>
+                                                <action selector="centerSelectionInVisibleArea:" target="-1" id="IOG-6D-g5B"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Spelling and Grammar" id="Dv1-io-Yv7">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Spelling" id="3IN-sU-3Bg">
+                                    <items>
+                                        <menuItem title="Show Spelling and Grammar" keyEquivalent=":" id="HFo-cy-zxI">
+                                            <connections>
+                                                <action selector="showGuessPanel:" target="-1" id="vFj-Ks-hy3"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Check Document Now" keyEquivalent=";" id="hz2-CU-CR7">
+                                            <connections>
+                                                <action selector="checkSpelling:" target="-1" id="fz7-VC-reM"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="bNw-od-mp5"/>
+                                        <menuItem title="Check Spelling While Typing" id="rbD-Rh-wIN">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleContinuousSpellChecking:" target="-1" id="7w6-Qz-0kB"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Check Grammar With Spelling" id="mK6-2p-4JG">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleGrammarChecking:" target="-1" id="muD-Qn-j4w"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Correct Spelling Automatically" id="78Y-hA-62v">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticSpellingCorrection:" target="-1" id="2lM-Qi-WAP"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Substitutions" id="9ic-FL-obx">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Substitutions" id="FeM-D8-WVr">
+                                    <items>
+                                        <menuItem title="Show Substitutions" id="z6F-FW-3nz">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="orderFrontSubstitutionsPanel:" target="-1" id="oku-mr-iSq"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="gPx-C9-uUO"/>
+                                        <menuItem title="Smart Copy/Paste" id="9yt-4B-nSM">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleSmartInsertDelete:" target="-1" id="3IJ-Se-DZD"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smart Quotes" id="hQb-2v-fYv">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticQuoteSubstitution:" target="-1" id="ptq-xd-QOA"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smart Dashes" id="rgM-f4-ycn">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticDashSubstitution:" target="-1" id="oCt-pO-9gS"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smart Links" id="cwL-P1-jid">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticLinkDetection:" target="-1" id="Gip-E3-Fov"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Data Detectors" id="tRr-pd-1PS">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticDataDetection:" target="-1" id="R1I-Nq-Kbl"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Text Replacement" id="HFQ-gK-NFA">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticTextReplacement:" target="-1" id="DvP-Fe-Py6"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Transformations" id="2oI-Rn-ZJC">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Transformations" id="c8a-y6-VQd">
+                                    <items>
+                                        <menuItem title="Make Upper Case" id="vmV-6d-7jI">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="uppercaseWord:" target="-1" id="sPh-Tk-edu"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Make Lower Case" id="d9M-CD-aMd">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="lowercaseWord:" target="-1" id="iUZ-b5-hil"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Capitalize" id="UEZ-Bs-lqG">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="capitalizeWord:" target="-1" id="26H-TL-nsh"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Speech" id="xrE-MZ-jX0">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Speech" id="3rS-ZA-NoH">
+                                    <items>
+                                        <menuItem title="Start Speaking" id="Ynk-f8-cLZ">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="startSpeaking:" target="-1" id="654-Ng-kyl"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Stop Speaking" id="Oyz-dy-DGm">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="stopSpeaking:" target="-1" id="dX8-6p-jy9"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Format" id="jxT-CU-nIS">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Format" id="GEO-Iw-cKr">
+                        <items>
+                            <menuItem title="Font" id="Gi5-1S-RQB">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Font" systemMenu="font" id="aXa-aM-Jaq">
+                                    <items>
+                                        <menuItem title="Show Fonts" keyEquivalent="t" id="Q5e-8K-NDq">
+                                            <connections>
+                                                <action selector="orderFrontFontPanel:" target="YLy-65-1bz" id="WHr-nq-2xA"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Bold" tag="2" keyEquivalent="b" id="GB9-OM-e27">
+                                            <connections>
+                                                <action selector="addFontTrait:" target="YLy-65-1bz" id="hqk-hr-sYV"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Italic" tag="1" keyEquivalent="i" id="Vjx-xi-njq">
+                                            <connections>
+                                                <action selector="addFontTrait:" target="YLy-65-1bz" id="IHV-OB-c03"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Underline" keyEquivalent="u" id="WRG-CD-K1S">
+                                            <connections>
+                                                <action selector="underline:" target="-1" id="FYS-2b-JAY"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="5gT-KC-WSO"/>
+                                        <menuItem title="Bigger" tag="3" keyEquivalent="+" id="Ptp-SP-VEL">
+                                            <connections>
+                                                <action selector="modifyFont:" target="YLy-65-1bz" id="Uc7-di-UnL"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smaller" tag="4" keyEquivalent="-" id="i1d-Er-qST">
+                                            <connections>
+                                                <action selector="modifyFont:" target="YLy-65-1bz" id="HcX-Lf-eNd"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="kx3-Dk-x3B"/>
+                                        <menuItem title="Kern" id="jBQ-r6-VK2">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <menu key="submenu" title="Kern" id="tlD-Oa-oAM">
+                                                <items>
+                                                    <menuItem title="Use Default" id="GUa-eO-cwY">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="useStandardKerning:" target="-1" id="6dk-9l-Ckg"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Use None" id="cDB-IK-hbR">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="turnOffKerning:" target="-1" id="U8a-gz-Maa"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Tighten" id="46P-cB-AYj">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="tightenKerning:" target="-1" id="hr7-Nz-8ro"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Loosen" id="ogc-rX-tC1">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="loosenKerning:" target="-1" id="8i4-f9-FKE"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                </items>
+                                            </menu>
+                                        </menuItem>
+                                        <menuItem title="Ligatures" id="o6e-r0-MWq">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <menu key="submenu" title="Ligatures" id="w0m-vy-SC9">
+                                                <items>
+                                                    <menuItem title="Use Default" id="agt-UL-0e3">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="useStandardLigatures:" target="-1" id="7uR-wd-Dx6"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Use None" id="J7y-lM-qPV">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="turnOffLigatures:" target="-1" id="iX2-gA-Ilz"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Use All" id="xQD-1f-W4t">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="useAllLigatures:" target="-1" id="KcB-kA-TuK"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                </items>
+                                            </menu>
+                                        </menuItem>
+                                        <menuItem title="Baseline" id="OaQ-X3-Vso">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <menu key="submenu" title="Baseline" id="ijk-EB-dga">
+                                                <items>
+                                                    <menuItem title="Use Default" id="3Om-Ey-2VK">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="unscript:" target="-1" id="0vZ-95-Ywn"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Superscript" id="Rqc-34-cIF">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="superscript:" target="-1" id="3qV-fo-wpU"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Subscript" id="I0S-gh-46l">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="subscript:" target="-1" id="Q6W-4W-IGz"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Raise" id="2h7-ER-AoG">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="raiseBaseline:" target="-1" id="4sk-31-7Q9"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Lower" id="1tx-W0-xDw">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="lowerBaseline:" target="-1" id="OF1-bc-KW4"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                </items>
+                                            </menu>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="Ndw-q3-faq"/>
+                                        <menuItem title="Show Colors" keyEquivalent="C" id="bgn-CT-cEk">
+                                            <connections>
+                                                <action selector="orderFrontColorPanel:" target="-1" id="mSX-Xz-DV3"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="iMs-zA-UFJ"/>
+                                        <menuItem title="Copy Style" keyEquivalent="c" id="5Vv-lz-BsD">
+                                            <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="copyFont:" target="-1" id="GJO-xA-L4q"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Paste Style" keyEquivalent="v" id="vKC-jM-MkH">
+                                            <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="pasteFont:" target="-1" id="JfD-CL-leO"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Text" id="Fal-I4-PZk">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Text" id="d9c-me-L2H">
+                                    <items>
+                                        <menuItem title="Align Left" keyEquivalent="{" id="ZM1-6Q-yy1">
+                                            <connections>
+                                                <action selector="alignLeft:" target="-1" id="zUv-R1-uAa"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Center" keyEquivalent="|" id="VIY-Ag-zcb">
+                                            <connections>
+                                                <action selector="alignCenter:" target="-1" id="spX-mk-kcS"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Justify" id="J5U-5w-g23">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="alignJustified:" target="-1" id="ljL-7U-jND"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Align Right" keyEquivalent="}" id="wb2-vD-lq4">
+                                            <connections>
+                                                <action selector="alignRight:" target="-1" id="r48-bG-YeY"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="4s2-GY-VfK"/>
+                                        <menuItem title="Writing Direction" id="H1b-Si-o9J">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <menu key="submenu" title="Writing Direction" id="8mr-sm-Yjd">
+                                                <items>
+                                                    <menuItem title="Paragraph" enabled="NO" id="ZvO-Gk-QUH">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                    </menuItem>
+                                                    <menuItem id="YGs-j5-SAR">
+                                                        <string key="title">	Default</string>
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="makeBaseWritingDirectionNatural:" target="-1" id="qtV-5e-UBP"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem id="Lbh-J2-qVU">
+                                                        <string key="title">	Left to Right</string>
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="makeBaseWritingDirectionLeftToRight:" target="-1" id="S0X-9S-QSf"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem id="jFq-tB-4Kx">
+                                                        <string key="title">	Right to Left</string>
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="makeBaseWritingDirectionRightToLeft:" target="-1" id="5fk-qB-AqJ"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem isSeparatorItem="YES" id="swp-gr-a21"/>
+                                                    <menuItem title="Selection" enabled="NO" id="cqv-fj-IhA">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                    </menuItem>
+                                                    <menuItem id="Nop-cj-93Q">
+                                                        <string key="title">	Default</string>
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="makeTextWritingDirectionNatural:" target="-1" id="lPI-Se-ZHp"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem id="BgM-ve-c93">
+                                                        <string key="title">	Left to Right</string>
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="makeTextWritingDirectionLeftToRight:" target="-1" id="caW-Bv-w94"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem id="RB4-Sm-HuC">
+                                                        <string key="title">	Right to Left</string>
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="makeTextWritingDirectionRightToLeft:" target="-1" id="EXD-6r-ZUu"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                </items>
+                                            </menu>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="fKy-g9-1gm"/>
+                                        <menuItem title="Show Ruler" id="vLm-3I-IUL">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleRuler:" target="-1" id="FOx-HJ-KwY"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Copy Ruler" keyEquivalent="c" id="MkV-Pr-PK5">
+                                            <modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="copyRuler:" target="-1" id="71i-fW-3W2"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Paste Ruler" keyEquivalent="v" id="LVM-kO-fVI">
+                                            <modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="pasteRuler:" target="-1" id="cSh-wd-qM2"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="View" id="H8h-7b-M4v">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="View" id="HyV-fh-RgO">
+                        <items>
+                            <menuItem title="Show Toolbar" keyEquivalent="t" id="snW-S8-Cw5">
+                                <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                <connections>
+                                    <action selector="toggleToolbarShown:" target="-1" id="BXY-wc-z0C"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Customize Toolbar…" id="1UK-8n-QPP">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="runToolbarCustomizationPalette:" target="-1" id="pQI-g3-MTW"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="hB3-LF-h0Y"/>
+                            <menuItem title="Show Sidebar" keyEquivalent="s" id="kIP-vf-haE">
+                                <modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
+                                <connections>
+                                    <action selector="toggleSidebar:" target="-1" id="iwa-gc-5KM"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Enter Full Screen" keyEquivalent="f" id="4J7-dP-txa">
+                                <modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
+                                <connections>
+                                    <action selector="toggleFullScreen:" target="-1" id="dU3-MA-1Rq"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Window" id="aUF-d1-5bR">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Window" systemMenu="window" id="Td7-aD-5lo">
+                        <items>
+                            <menuItem title="Minimize" keyEquivalent="m" id="OY7-WF-poV">
+                                <connections>
+                                    <action selector="performMiniaturize:" target="-1" id="VwT-WD-YPe"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Zoom" id="R4o-n2-Eq4">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="performZoom:" target="-1" id="DIl-cC-cCs"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="eu3-7i-yIM"/>
+                            <menuItem title="Bring All to Front" id="LE2-aR-0XJ">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="arrangeInFront:" target="-1" id="DRN-fu-gQh"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Help" id="wpr-3q-Mcd">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Help" systemMenu="help" id="F2S-fz-NVQ">
+                        <items>
+                            <menuItem title="LoopbackFS Help" keyEquivalent="?" id="FKE-Sm-Kum" userLabel="Loopback Help">
+                                <connections>
+                                    <action selector="showHelp:" target="-1" id="y7X-2Q-9no"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+            </items>
+            <point key="canvasLocation" x="31" y="154"/>
+        </menu>
+    </objects>
+</document>

LoopbackFS-ObjC/LoopbackFS/Info.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>${EXECUTABLE_NAME}</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>${PRODUCT_NAME}</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1.0</string>
+	<key>NSMainNibFile</key>
+	<string>MainMenu</string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+</dict>
+</plist>

LoopbackFS-ObjC/LoopbackFS/LoopbackFS.entitlements

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.cs.disable-library-validation</key>
+	<true/>
+</dict>
+</plist>

LoopbackFS-ObjC/LoopbackFS/LoopbackFS.h

@@ -0,0 +1,37 @@
+// ================================================================
+// Copyright (C) 2007 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ================================================================
+//
+//  LoopbackFS.h
+//  LoopbackFS
+//
+//  Created by ted on 12/12/07.
+//
+// This is a simple but complete example filesystem that mounts a local
+// directory. You can modify this to see how the Finder reacts to returning
+// specific error codes or not implementing a particular GMUserFileSystem
+// operation.
+//
+// For example, you can mount "/tmp" in /Volumes/loop. Note: It is
+// probably not a good idea to mount "/" through this filesystem.
+
+#import <Cocoa/Cocoa.h>
+
+@interface LoopbackFS : NSObject  {
+  NSString* rootPath_;   // The local file-system path to mount.
+}
+- (id)initWithRootPath:(NSString *)rootPath;
+
+@end

LoopbackFS-ObjC/LoopbackFS/LoopbackFS.m

@@ -0,0 +1,479 @@
+// ================================================================
+// Copyright (C) 2007 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ================================================================
+//
+//  LoopbackFS.m
+//  LoopbackFS
+//
+//  Created by ted on 12/12/07.
+//
+// This is a simple but complete example filesystem that mounts a local
+// directory. You can modify this to see how the Finder reacts to returning
+// specific error codes or not implementing a particular GMUserFileSystem
+// operation.
+//
+// For example, you can mount "/tmp" in /Volumes/loop. Note: It is
+// probably not a good idea to mount "/" through this filesystem.
+
+#import "LoopbackFS.h"
+
+#import <macFUSE/macFUSE.h>
+
+#import <sys/stat.h>
+#import <sys/vnode.h>
+#import <sys/xattr.h>
+
+#import "NSError+POSIX.h"
+
+#define HAVE_EXCHANE 0
+
+@implementation LoopbackFS
+
+- (id)initWithRootPath:(NSString *)rootPath {
+  if ((self = [super init])) {
+    rootPath_ = [rootPath retain];
+  }
+  return self;
+}
+
+- (void) dealloc {
+  [rootPath_ release];
+  [super dealloc];
+}
+
+#pragma mark Moving an Item
+
+- (BOOL)moveItemAtPath:(NSString *)source
+                toPath:(NSString *)destination
+               options:(GMUserFileSystemMoveOption)options
+                 error:(NSError **)error {
+  // We use rename directly here since NSFileManager can sometimes fail to
+  // rename and return non-posix error codes.
+  NSString* p_src = [rootPath_ stringByAppendingString:source];
+  NSString* p_dst = [rootPath_ stringByAppendingString:destination];
+  int ret = 0;
+  if (options == 0) {
+    ret = rename([p_src UTF8String], [p_dst UTF8String]);
+  } else {
+    unsigned int flags = 0;
+    if (options & GMUserFileSystemMoveOptionSwap) {
+      flags |= RENAME_SWAP;
+    }
+    if (options & GMUserFileSystemMoveOptionExclusive) {
+      flags |= RENAME_EXCL;
+    }
+    ret = renamex_np([p_src UTF8String], [p_dst UTF8String], flags);
+  }
+  if ( ret < 0 ) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return NO;
+  }
+  return YES;
+}
+
+#pragma mark Removing an Item
+
+- (BOOL)removeDirectoryAtPath:(NSString *)path error:(NSError **)error {
+  // We need to special-case directories here and use the bsd API since
+  // NSFileManager will happily do a recursive remove :-(
+  NSString* p = [rootPath_ stringByAppendingString:path];
+  int ret = rmdir([p UTF8String]);
+  if (ret < 0) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return NO;
+  }
+  return YES;
+}
+
+- (BOOL)removeItemAtPath:(NSString *)path error:(NSError **)error {
+  // NOTE: If removeDirectoryAtPath is commented out, then this may be called
+  // with a directory, in which case NSFileManager will recursively remove all
+  // subdirectories. So be careful!
+  NSString* p = [rootPath_ stringByAppendingString:path];
+  return [[NSFileManager defaultManager] removeItemAtPath:p error:error];
+}
+
+#pragma mark Creating an Item
+
+- (BOOL)createDirectoryAtPath:(NSString *)path
+                   attributes:(NSDictionary *)attributes
+                        error:(NSError **)error {
+  NSString* p = [rootPath_ stringByAppendingString:path];
+  return [[NSFileManager defaultManager] createDirectoryAtPath:p
+                                   withIntermediateDirectories:NO
+                                                    attributes:attributes
+                                                        error:error];
+}
+
+- (BOOL)createFileAtPath:(NSString *)path
+              attributes:(NSDictionary *)attributes
+                   flags:(int)flags
+                userData:(id *)userData
+                   error:(NSError **)error {
+  NSString* p = [rootPath_ stringByAppendingString:path];
+  mode_t mode = [[attributes objectForKey:NSFilePosixPermissions] longValue];
+  int fd = open([p UTF8String], flags, mode);
+  if ( fd < 0 ) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return NO;
+  }
+  *userData = [NSNumber numberWithLong:fd];
+  return YES;
+}
+
+#pragma mark Linking an Item
+
+- (BOOL)linkItemAtPath:(NSString *)path
+                toPath:(NSString *)otherPath
+                 error:(NSError **)error {
+  NSString* p_path = [rootPath_ stringByAppendingString:path];
+  NSString* p_otherPath = [rootPath_ stringByAppendingString:otherPath];
+
+  // We use link rather than the NSFileManager equivalent because it will copy
+  // the file rather than hard link if part of the root path is a symlink.
+  int rc = link([p_path UTF8String], [p_otherPath UTF8String]);
+  if ( rc <  0 ) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return NO;
+  }
+  return YES;
+}
+
+#pragma mark Symbolic Links
+
+- (BOOL)createSymbolicLinkAtPath:(NSString *)path
+             withDestinationPath:(NSString *)otherPath
+                           error:(NSError **)error {
+  NSString* p_src = [rootPath_ stringByAppendingString:path];
+  return [[NSFileManager defaultManager] createSymbolicLinkAtPath:p_src
+                                              withDestinationPath:otherPath
+                                                            error:error];
+}
+
+- (NSString *)destinationOfSymbolicLinkAtPath:(NSString *)path
+                                        error:(NSError **)error {
+  NSString* p = [rootPath_ stringByAppendingString:path];
+  return [[NSFileManager defaultManager] destinationOfSymbolicLinkAtPath:p
+                                                                   error:error];
+}
+
+#pragma mark File Contents
+
+- (BOOL)openFileAtPath:(NSString *)path
+                  mode:(int)mode
+              userData:(id *)userData
+                 error:(NSError **)error {
+  NSString* p = [rootPath_ stringByAppendingString:path];
+  int fd = open([p UTF8String], mode);
+  if ( fd < 0 ) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return NO;
+  }
+  *userData = [NSNumber numberWithLong:fd];
+  return YES;
+}
+
+- (void)releaseFileAtPath:(NSString *)path userData:(id)userData {
+  NSNumber* num = (NSNumber *)userData;
+  int fd = [num intValue];
+  close(fd);
+}
+
+- (int)readFileAtPath:(NSString *)path
+             userData:(id)userData
+               buffer:(char *)buffer
+                 size:(size_t)size
+               offset:(off_t)offset
+                error:(NSError **)error {
+  NSNumber* num = (NSNumber *)userData;
+  int fd = [num intValue];
+  size_t ret = pread(fd, buffer, size, offset);
+  if ( ret < 0 ) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return -1;
+  }
+  return (int)ret;
+}
+
+- (int)writeFileAtPath:(NSString *)path
+              userData:(id)userData
+                buffer:(const char *)buffer
+                  size:(size_t)size
+                offset:(off_t)offset
+                 error:(NSError **)error {
+  NSNumber* num = (NSNumber *)userData;
+  int fd = [num intValue];
+  size_t ret = pwrite(fd, buffer, size, offset);
+  if ( ret < 0 ) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return -1;
+  }
+  return (int)ret;
+}
+
+- (BOOL)preallocateFileAtPath:(NSString *)path
+                     userData:(id)userData
+                      options:(int)options
+                       offset:(off_t)offset
+                       length:(off_t)length
+                        error:(NSError **)error {
+  NSNumber* num = (NSNumber *)userData;
+  int fd = [num intValue];
+
+  fstore_t fstore;
+
+  fstore.fst_flags = 0;
+  if ( options & ALLOCATECONTIG ) {
+    fstore.fst_flags |= F_ALLOCATECONTIG;
+  }
+  if ( options & ALLOCATEALL ) {
+    fstore.fst_flags |= F_ALLOCATEALL;
+  }
+
+  if ( options & ALLOCATEFROMPEOF ) {
+    fstore.fst_posmode = F_PEOFPOSMODE;
+  } else if ( options & ALLOCATEFROMVOL ) {
+    fstore.fst_posmode = F_VOLPOSMODE;
+  }
+
+  fstore.fst_offset = offset;
+  fstore.fst_length = length;
+
+  if ( fcntl(fd, F_PREALLOCATE, &fstore) == -1 ) {
+    *error = [NSError errorWithPOSIXCode:errno];
+    return NO;
+  }
+  return YES;
+}
+
+#if HAVE_EXCHANE
+
+- (BOOL)exchangeDataOfItemAtPath:(NSString *)path1
+                  withItemAtPath:(NSString *)path2
+                           error:(NSError **)error {
+  NSString* p1 = [rootPath_ stringByAppendingString:path1];
+  NSString* p2 = [rootPath_ stringByAppendingString:path2];
+  int ret = exchangedata([p1 UTF8String], [p2 UTF8String], 0);
+  if ( ret < 0 ) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return NO;
+  }
+  return YES;
+}
+
+#endif /* HAVE_EXCHANGE */
+
+#pragma mark Directory Contents
+
+- (NSArray *)contentsOfDirectoryAtPath:(NSString *)path error:(NSError **)error {
+  NSString* p = [rootPath_ stringByAppendingString:path];
+  return [[NSFileManager defaultManager] contentsOfDirectoryAtPath:p error:error];
+}
+
+#pragma mark Getting and Setting Attributes
+
+- (NSDictionary *)attributesOfItemAtPath:(NSString *)path
+                                userData:(id)userData
+                                   error:(NSError **)error {
+  NSString* p = [rootPath_ stringByAppendingString:path];
+  NSDictionary* attribs =
+    [[NSFileManager defaultManager] attributesOfItemAtPath:p error:error];
+  return attribs;
+}
+
+- (NSDictionary *)attributesOfFileSystemForPath:(NSString *)path
+                                          error:(NSError **)error {
+  NSString* p = [rootPath_ stringByAppendingString:path];
+  NSDictionary* d =
+    [[NSFileManager defaultManager] attributesOfFileSystemForPath:p error:error];
+  if (d) {
+    NSMutableDictionary* attribs = [NSMutableDictionary dictionaryWithDictionary:d];
+    [attribs setObject:[NSNumber numberWithBool:YES]
+                forKey:kGMUserFileSystemVolumeSupportsExtendedDatesKey];
+
+    NSURL *URL = [NSURL fileURLWithPath:p isDirectory:YES];
+    NSNumber *supportsCaseSensitiveNames = nil;
+    [URL getResourceValue:&supportsCaseSensitiveNames
+                   forKey:NSURLVolumeSupportsCaseSensitiveNamesKey
+                        error:NULL];
+    if (supportsCaseSensitiveNames == nil) {
+      supportsCaseSensitiveNames = [NSNumber numberWithBool:YES];
+    }
+    [attribs setObject:supportsCaseSensitiveNames
+                forKey:kGMUserFileSystemVolumeSupportsCaseSensitiveNamesKey];
+
+    [attribs setObject:[NSNumber numberWithBool:YES]
+                forKey:kGMUserFileSystemVolumeSupportsSwapRenamingKey];
+    [attribs setObject:[NSNumber numberWithBool:YES]
+                forKey:kGMUserFileSystemVolumeSupportsExclusiveRenamingKey];
+
+    [attribs setObject:[NSNumber numberWithBool:YES]
+                forKey:kGMUserFileSystemVolumeSupportsSetVolumeNameKey];
+
+    return attribs;
+  }
+  return nil;
+}
+
+- (BOOL)setAttributes:(NSDictionary *)attributes
+         ofItemAtPath:(NSString *)path
+             userData:(id)userData
+                error:(NSError **)error {
+  NSString* p = [rootPath_ stringByAppendingString:path];
+
+  // TODO: Handle other keys not handled by NSFileManager setAttributes call.
+
+  NSNumber* offset = [attributes objectForKey:NSFileSize];
+  if ( offset ) {
+    int ret = truncate([p UTF8String], [offset longLongValue]);
+    if ( ret < 0 ) {
+      if ( error ) {
+        *error = [NSError errorWithPOSIXCode:errno];
+      }
+      return NO;
+    }
+  }
+  NSNumber* flags = [attributes objectForKey:kGMUserFileSystemFileFlagsKey];
+  if (flags != nil) {
+    int rc = chflags([p UTF8String], [flags intValue]);
+    if (rc < 0) {
+      if ( error ) {
+        *error = [NSError errorWithPOSIXCode:errno];
+      }
+      return NO;
+    }
+  }
+  return [[NSFileManager defaultManager] setAttributes:attributes
+                                          ofItemAtPath:p
+                                                 error:error];
+}
+
+- (BOOL)setAttributes:(NSDictionary *)attributes
+   ofFileSystemAtPath:(NSString *)path
+                error:(NSError **)error {
+  return YES;
+}
+
+#pragma mark Extended Attributes
+
+- (NSArray *)extendedAttributesOfItemAtPath:(NSString *)path error:(NSError **)error {
+  NSString* p = [rootPath_ stringByAppendingString:path];
+
+  ssize_t size = listxattr([p UTF8String], nil, 0, XATTR_NOFOLLOW);
+  if ( size < 0 ) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return nil;
+  }
+  NSMutableData* data = [NSMutableData dataWithLength:size];
+  size = listxattr([p UTF8String], [data mutableBytes], [data length], XATTR_NOFOLLOW);
+  if ( size < 0 ) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return nil;
+  }
+  NSMutableArray* contents = [NSMutableArray array];
+  char* ptr = (char *)[data bytes];
+  while ( ptr < ((char *)[data bytes] + size) ) {
+    NSString* s = [NSString stringWithUTF8String:ptr];
+    [contents addObject:s];
+    ptr += ([s length] + 1);
+  }
+  return contents;
+}
+
+- (NSData *)valueOfExtendedAttribute:(NSString *)name
+                        ofItemAtPath:(NSString *)path
+                            position:(off_t)position
+                               error:(NSError **)error {
+  NSString* p = [rootPath_ stringByAppendingString:path];
+
+  ssize_t size = getxattr([p UTF8String], [name UTF8String], nil, 0,
+                          (uint32_t)position, XATTR_NOFOLLOW);
+  if ( size < 0 ) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return nil;
+  }
+  NSMutableData* data = [NSMutableData dataWithLength:size];
+  size = getxattr([p UTF8String], [name UTF8String], [data mutableBytes],
+                  [data length], (uint32_t)position, XATTR_NOFOLLOW);
+  if ( size < 0 ) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return nil;
+  }
+  return data;
+}
+
+- (BOOL)setExtendedAttribute:(NSString *)name
+                ofItemAtPath:(NSString *)path
+                       value:(NSData *)value
+                    position:(off_t)position
+                       options:(int)options
+                       error:(NSError **)error {
+  // Setting com.apple.FinderInfo happens in the kernel, so security related
+  // bits are set in the options. We need to explicitly remove them or the call
+  // to setxattr will fail.
+  // TODO: Why is this necessary?
+  options &= ~(XATTR_NOSECURITY | XATTR_NODEFAULT);
+  NSString* p = [rootPath_ stringByAppendingString:path];
+  int ret = setxattr([p UTF8String], [name UTF8String], [value bytes],
+                     [value length], (uint32_t)position,
+                     options | XATTR_NOFOLLOW);
+  if ( ret < 0 ) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return NO;
+  }
+  return YES;
+}
+
+- (BOOL)removeExtendedAttribute:(NSString *)name
+                   ofItemAtPath:(NSString *)path
+                          error:(NSError **)error {
+  NSString* p = [rootPath_ stringByAppendingString:path];
+  int ret = removexattr([p UTF8String], [name UTF8String], XATTR_NOFOLLOW);
+  if ( ret < 0 ) {
+    if ( error ) {
+      *error = [NSError errorWithPOSIXCode:errno];
+    }
+    return NO;
+  }
+  return YES;
+}
+
+@end

LoopbackFS-ObjC/LoopbackFS/NSError+POSIX.h

@@ -0,0 +1,26 @@
+//
+//  NSError+POSIX.h
+//
+// ================================================================
+// Copyright (C) 2008 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ================================================================
+//
+
+#import <Foundation/Foundation.h>
+
+// Category on NSError to  simplify creating an NSError based on posix errno.
+@interface NSError (POSIX)
++ (NSError *)errorWithPOSIXCode:(int)code;
+@end

LoopbackFS-ObjC/LoopbackFS/NSError+POSIX.m

@@ -0,0 +1,28 @@
+//
+//  NSError+POSIX.m
+//
+// ================================================================
+// Copyright (C) 2008 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ================================================================
+//
+
+#import "NSError+POSIX.h"
+
+@implementation NSError (POSIX)
++ (NSError *)errorWithPOSIXCode:(int) code {
+  return [NSError errorWithDomain:NSPOSIXErrorDomain code:code userInfo:nil];
+}
+@end
+

LoopbackFS-ObjC/LoopbackFS/main.m

@@ -0,0 +1,30 @@
+// ================================================================
+// Copyright (C) 2007 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ================================================================
+//
+//  main.m
+//  LoopbackFS
+//
+//  Created by ted on 12/27/07.
+//
+
+#import <Cocoa/Cocoa.h>
+
+int main(int argc, const char * argv[]) {
+    @autoreleasepool {
+        // Setup code that might create autoreleased objects goes here.
+    }
+    return NSApplicationMain(argc, argv);
+}

LoopbackFS-Swift/LICENSE.txt

@@ -0,0 +1,27 @@
+Copyright 2017 KF Interactive GmbH
+Copyright 2018-2021 Benjamin Fleischer
+
+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 of the copyright holder 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 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.

LoopbackFS-Swift/LoopbackFS.xcodeproj/project.pbxproj

@@ -0,0 +1,360 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 46;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		43C857D8264ACAAE0021A8BC /* macFUSE.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 43C857D7264ACAAE0021A8BC /* macFUSE.framework */; };
+		43E9539A2646E19C009CCB55 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 43E953992646E19C009CCB55 /* Assets.xcassets */; };
+		F48D00F31E3B6EC000FE033E /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = F48D00F21E3B6EC000FE033E /* AppDelegate.swift */; };
+		F48D00F81E3B6EC000FE033E /* MainMenu.xib in Resources */ = {isa = PBXBuildFile; fileRef = F48D00F61E3B6EC000FE033E /* MainMenu.xib */; };
+		F48D01071E3B74F900FE033E /* LoopbackFS.swift in Sources */ = {isa = PBXBuildFile; fileRef = F48D01061E3B74F900FE033E /* LoopbackFS.swift */; };
+		F48D01091E3B7DA500FE033E /* NSError+POSIX.swift in Sources */ = {isa = PBXBuildFile; fileRef = F48D01081E3B7DA500FE033E /* NSError+POSIX.swift */; };
+		F4D7409B1E65585B007D6E11 /* LICENSE.txt in Resources */ = {isa = PBXBuildFile; fileRef = F4D7409A1E65585B007D6E11 /* LICENSE.txt */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXFileReference section */
+		43C857D7264ACAAE0021A8BC /* macFUSE.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = macFUSE.framework; path = ../../../../../../../Library/Frameworks/macFUSE.framework; sourceTree = "<group>"; };
+		43E953992646E19C009CCB55 /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
+		43EBE3672360F9D300E3A7F5 /* LoopbackFS.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = LoopbackFS.entitlements; sourceTree = "<group>"; };
+		F48D00EF1E3B6EC000FE033E /* LoopbackFS.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = LoopbackFS.app; sourceTree = BUILT_PRODUCTS_DIR; };
+		F48D00F21E3B6EC000FE033E /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
+		F48D00F71E3B6EC000FE033E /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.xib; name = Base; path = Base.lproj/MainMenu.xib; sourceTree = "<group>"; };
+		F48D00F91E3B6EC000FE033E /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		F48D01051E3B716E00FE033E /* Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Bridging-Header.h"; sourceTree = "<group>"; };
+		F48D01061E3B74F900FE033E /* LoopbackFS.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = LoopbackFS.swift; sourceTree = "<group>"; };
+		F48D01081E3B7DA500FE033E /* NSError+POSIX.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "NSError+POSIX.swift"; sourceTree = "<group>"; };
+		F4D7409A1E65585B007D6E11 /* LICENSE.txt */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = LICENSE.txt; sourceTree = "<group>"; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		F48D00EC1E3B6EC000FE033E /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				43C857D8264ACAAE0021A8BC /* macFUSE.framework in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		43C857D6264ACAAE0021A8BC /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				43C857D7264ACAAE0021A8BC /* macFUSE.framework */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
+		F48D00E61E3B6EC000FE033E = {
+			isa = PBXGroup;
+			children = (
+				F4D7409A1E65585B007D6E11 /* LICENSE.txt */,
+				F48D00F11E3B6EC000FE033E /* LoopbackFS */,
+				43C857D6264ACAAE0021A8BC /* Frameworks */,
+				F48D00F01E3B6EC000FE033E /* Products */,
+			);
+			sourceTree = "<group>";
+		};
+		F48D00F01E3B6EC000FE033E /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				F48D00EF1E3B6EC000FE033E /* LoopbackFS.app */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
+		F48D00F11E3B6EC000FE033E /* LoopbackFS */ = {
+			isa = PBXGroup;
+			children = (
+				F48D00F21E3B6EC000FE033E /* AppDelegate.swift */,
+				43E953992646E19C009CCB55 /* Assets.xcassets */,
+				F48D01051E3B716E00FE033E /* Bridging-Header.h */,
+				F48D00F91E3B6EC000FE033E /* Info.plist */,
+				43EBE3672360F9D300E3A7F5 /* LoopbackFS.entitlements */,
+				F48D01061E3B74F900FE033E /* LoopbackFS.swift */,
+				F48D00F61E3B6EC000FE033E /* MainMenu.xib */,
+				F48D01081E3B7DA500FE033E /* NSError+POSIX.swift */,
+			);
+			path = LoopbackFS;
+			sourceTree = "<group>";
+		};
+/* End PBXGroup section */
+
+/* Begin PBXNativeTarget section */
+		F48D00EE1E3B6EC000FE033E /* LoopbackFS */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = F48D00FC1E3B6EC000FE033E /* Build configuration list for PBXNativeTarget "LoopbackFS" */;
+			buildPhases = (
+				F48D00EB1E3B6EC000FE033E /* Sources */,
+				F48D00EC1E3B6EC000FE033E /* Frameworks */,
+				F48D00ED1E3B6EC000FE033E /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = LoopbackFS;
+			productName = LoopbackFS;
+			productReference = F48D00EF1E3B6EC000FE033E /* LoopbackFS.app */;
+			productType = "com.apple.product-type.application";
+		};
+/* End PBXNativeTarget section */
+
+/* Begin PBXProject section */
+		F48D00E71E3B6EC000FE033E /* Project object */ = {
+			isa = PBXProject;
+			attributes = {
+				LastSwiftUpdateCheck = 0820;
+				LastUpgradeCheck = 1240;
+				ORGANIZATIONNAME = "KF Interactive GmbH";
+				TargetAttributes = {
+					F48D00EE1E3B6EC000FE033E = {
+						CreatedOnToolsVersion = 8.2.1;
+						LastSwiftMigration = 1240;
+						ProvisioningStyle = Manual;
+						SystemCapabilities = {
+							com.apple.HardenedRuntime = {
+								enabled = 1;
+							};
+						};
+					};
+				};
+			};
+			buildConfigurationList = F48D00EA1E3B6EC000FE033E /* Build configuration list for PBXProject "LoopbackFS" */;
+			compatibilityVersion = "Xcode 3.2";
+			developmentRegion = en;
+			hasScannedForEncodings = 0;
+			knownRegions = (
+				en,
+				Base,
+			);
+			mainGroup = F48D00E61E3B6EC000FE033E;
+			productRefGroup = F48D00F01E3B6EC000FE033E /* Products */;
+			projectDirPath = "";
+			projectRoot = "";
+			targets = (
+				F48D00EE1E3B6EC000FE033E /* LoopbackFS */,
+			);
+		};
+/* End PBXProject section */
+
+/* Begin PBXResourcesBuildPhase section */
+		F48D00ED1E3B6EC000FE033E /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				F48D00F81E3B6EC000FE033E /* MainMenu.xib in Resources */,
+				43E9539A2646E19C009CCB55 /* Assets.xcassets in Resources */,
+				F4D7409B1E65585B007D6E11 /* LICENSE.txt in Resources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXResourcesBuildPhase section */
+
+/* Begin PBXSourcesBuildPhase section */
+		F48D00EB1E3B6EC000FE033E /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				F48D00F31E3B6EC000FE033E /* AppDelegate.swift in Sources */,
+				F48D01091E3B7DA500FE033E /* NSError+POSIX.swift in Sources */,
+				F48D01071E3B74F900FE033E /* LoopbackFS.swift in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXSourcesBuildPhase section */
+
+/* Begin PBXVariantGroup section */
+		F48D00F61E3B6EC000FE033E /* MainMenu.xib */ = {
+			isa = PBXVariantGroup;
+			children = (
+				F48D00F71E3B6EC000FE033E /* Base */,
+			);
+			name = MainMenu.xib;
+			sourceTree = "<group>";
+		};
+/* End PBXVariantGroup section */
+
+/* Begin XCBuildConfiguration section */
+		F48D00FA1E3B6EC000FE033E /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				CODE_SIGN_IDENTITY = "-";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = dwarf;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_TESTABILITY = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"DEBUG=1",
+					"$(inherited)",
+				);
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MTL_ENABLE_DEBUG_INFO = YES;
+				ONLY_ACTIVE_ARCH = YES;
+				OTHER_CODE_SIGN_FLAGS = "--timestamp";
+				SDKROOT = macosx;
+				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+			};
+			name = Debug;
+		};
+		F48D00FB1E3B6EC000FE033E /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				CODE_SIGN_IDENTITY = "-";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				OTHER_CODE_SIGN_FLAGS = "--timestamp";
+				SDKROOT = macosx;
+				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+			};
+			name = Release;
+		};
+		F48D00FD1E3B6EC000FE033E /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CODE_SIGN_ENTITLEMENTS = LoopbackFS/LoopbackFS.entitlements;
+				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_STYLE = Manual;
+				COMBINE_HIDPI_IMAGES = YES;
+				DEVELOPMENT_TEAM = "";
+				ENABLE_HARDENED_RUNTIME = YES;
+				FRAMEWORK_SEARCH_PATHS = /Library/Frameworks;
+				INFOPLIST_FILE = LoopbackFS/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
+				PRODUCT_BUNDLE_IDENTIFIER = "io.macfuse.demo.loopbackfs-swift";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				PROVISIONING_PROFILE_SPECIFIER = "";
+				SWIFT_OBJC_BRIDGING_HEADER = "LoopbackFS/Bridging-Header.h";
+				SWIFT_VERSION = 5.0;
+			};
+			name = Debug;
+		};
+		F48D00FE1E3B6EC000FE033E /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CODE_SIGN_ENTITLEMENTS = LoopbackFS/LoopbackFS.entitlements;
+				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_STYLE = Manual;
+				COMBINE_HIDPI_IMAGES = YES;
+				DEVELOPMENT_TEAM = "";
+				ENABLE_HARDENED_RUNTIME = YES;
+				FRAMEWORK_SEARCH_PATHS = /Library/Frameworks;
+				INFOPLIST_FILE = LoopbackFS/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
+				PRODUCT_BUNDLE_IDENTIFIER = "io.macfuse.demo.loopbackfs-swift";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				PROVISIONING_PROFILE_SPECIFIER = "";
+				SWIFT_OBJC_BRIDGING_HEADER = "LoopbackFS/Bridging-Header.h";
+				SWIFT_VERSION = 5.0;
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		F48D00EA1E3B6EC000FE033E /* Build configuration list for PBXProject "LoopbackFS" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				F48D00FA1E3B6EC000FE033E /* Debug */,
+				F48D00FB1E3B6EC000FE033E /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		F48D00FC1E3B6EC000FE033E /* Build configuration list for PBXNativeTarget "LoopbackFS" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				F48D00FD1E3B6EC000FE033E /* Debug */,
+				F48D00FE1E3B6EC000FE033E /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = F48D00E71E3B6EC000FE033E /* Project object */;
+}

LoopbackFS-Swift/LoopbackFS.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:LoopbackFS.xcodeproj">
+   </FileRef>
+</Workspace>

LoopbackFS-Swift/LoopbackFS.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

LoopbackFS-Swift/LoopbackFS/AppDelegate.swift

@@ -0,0 +1,101 @@
+//
+//  AppDelegate.swift
+//  LoopbackFS
+//
+//  Created by Gunnar Herzog on 27/01/2017.
+//  Copyright © 2017 KF Interactive GmbH. All rights reserved.
+//  Copyright © 2019-2020 Benjamin Fleischer. All rights reserved.
+//
+
+import Cocoa
+
+let loopbackMountPath = "/Volumes/loop"
+
+@NSApplicationMain
+class AppDelegate: NSObject, NSApplicationDelegate {
+
+    @IBOutlet weak var window: NSWindow!
+
+    private var notificationObservers: [NSObjectProtocol] = []
+    private var rootPath: String!
+    private lazy var loopFileSystem: LoopbackFS = {
+        return LoopbackFS(rootPath: self.rootPath)
+    }()
+
+    private var userFileSystem: GMUserFileSystem?
+
+    func applicationDidFinishLaunching(_ aNotification: Notification) {        
+        let panel = NSOpenPanel()
+        panel.canChooseFiles = false
+        panel.canChooseDirectories = true
+        panel.allowsMultipleSelection = false
+        panel.directoryURL = URL(fileURLWithPath: "/tmp")
+        let returnValue = panel.runModal()
+
+        guard returnValue.rawValue != NSFileHandlingPanelCancelButton, let rootPath = panel.urls.first?.path else { exit(0) }
+
+        addNotifications()
+
+        self.rootPath = rootPath
+
+        var options: [String] = ["native_xattr", "volname=LoopbackFS"]
+
+        if let volumeIconPath = Bundle.main.path(forResource: "LoopbackFS", ofType: "icns") {
+            options.insert("volicon=\(volumeIconPath)", at: 0)
+        }
+
+        userFileSystem = GMUserFileSystem(delegate: self.loopFileSystem, isThreadSafe: false)
+        
+        // Do not use the 'native_xattr' mount-time option unless the underlying
+        // file system supports native extended attributes. Typically, the user
+        // would be mounting an HFS+ directory through LoopbackFS, so we do want
+        // this option in that case.
+        userFileSystem!.mount(atPath: loopbackMountPath, withOptions: options)
+    }
+
+    func addNotifications() {
+        let mountObserver = NotificationCenter.default.addObserver(forName: NSNotification.Name(kGMUserFileSystemDidMount), object: nil, queue: nil) { notification in
+            print("Got didMount notification.")
+
+            let parentPath = (loopbackMountPath as NSString).deletingLastPathComponent
+            NSWorkspace.shared.selectFile(loopbackMountPath, inFileViewerRootedAtPath: parentPath)
+        }
+
+        let failedObserver = NotificationCenter.default.addObserver(forName: NSNotification.Name(kGMUserFileSystemMountFailed), object: nil, queue: .main) { notification in
+            print("Got mountFailed notification.")
+
+            guard let userInfo = notification.userInfo, let error = userInfo[kGMUserFileSystemErrorKey] as? NSError else { return }
+
+            print("kGMUserFileSystem Error: \(error), userInfo=\(error.userInfo)")
+            let alert = NSAlert()
+            alert.messageText = "Mount Failed"
+            alert.informativeText = error.localizedDescription
+            alert.runModal()
+
+            NSApplication.shared.terminate(nil)
+        }
+
+        let unmountObserver = NotificationCenter.default.addObserver(forName: NSNotification.Name(kGMUserFileSystemDidUnmount), object: nil, queue: nil) { notification in
+            print("Got didUnmount notification.")
+
+            DispatchQueue.main.async {
+                NSApplication.shared.terminate(nil)
+            }
+        }
+
+        self.notificationObservers = [mountObserver, failedObserver, unmountObserver]
+    }
+
+    func applicationShouldTerminate(_ sender: NSApplication) -> NSApplication.TerminateReply {
+        notificationObservers.forEach {
+            NotificationCenter.default.removeObserver($0)
+        }
+        notificationObservers.removeAll()
+
+        if let userFileSystem = userFileSystem {
+            userFileSystem.unmount()
+        }
+        return .terminateNow
+    }
+}
+

LoopbackFS-Swift/LoopbackFS/Assets.xcassets/AccentColor.colorset/Contents.json

@@ -0,0 +1,11 @@
+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

LoopbackFS-Swift/LoopbackFS/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,58 @@
+{
+  "images" : [
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "16x16"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "16x16"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "32x32"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "32x32"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "128x128"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "128x128"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "256x256"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "256x256"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "512x512"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "512x512"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

LoopbackFS-Swift/LoopbackFS/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

LoopbackFS-Swift/LoopbackFS/Base.lproj/MainMenu.xib

@@ -0,0 +1,680 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="17701" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
+    <dependencies>
+        <deployment identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="17701"/>
+    </dependencies>
+    <objects>
+        <customObject id="-2" userLabel="File's Owner" customClass="NSApplication">
+            <connections>
+                <outlet property="delegate" destination="Voe-Tx-rLC" id="GzC-gU-4Uq"/>
+            </connections>
+        </customObject>
+        <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
+        <customObject id="-3" userLabel="Application" customClass="NSObject"/>
+        <customObject id="Voe-Tx-rLC" customClass="AppDelegate" customModule="LoopbackFS" customModuleProvider="target"/>
+        <customObject id="YLy-65-1bz" customClass="NSFontManager"/>
+        <menu title="Main Menu" systemMenu="main" id="AYu-sK-qS6">
+            <items>
+                <menuItem title="LoopbackFS" id="1Xt-HY-uBw">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="LoopbackFS" systemMenu="apple" id="uQy-DD-JDr">
+                        <items>
+                            <menuItem title="About LoopbackFS" id="5kV-Vb-QxS">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="orderFrontStandardAboutPanel:" target="-1" id="Exp-CZ-Vem"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="VOq-y0-SEH"/>
+                            <menuItem title="Preferences…" keyEquivalent="," id="BOF-NM-1cW"/>
+                            <menuItem isSeparatorItem="YES" id="wFC-TO-SCJ"/>
+                            <menuItem title="Services" id="NMo-om-nkz">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Services" systemMenu="services" id="hz9-B4-Xy5"/>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="4je-JR-u6R"/>
+                            <menuItem title="Hide LoopbackFS" keyEquivalent="h" id="Olw-nP-bQN">
+                                <connections>
+                                    <action selector="hide:" target="-1" id="PnN-Uc-m68"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Hide Others" keyEquivalent="h" id="Vdr-fp-XzO">
+                                <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                <connections>
+                                    <action selector="hideOtherApplications:" target="-1" id="VT4-aY-XCT"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Show All" id="Kd2-mp-pUS">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="unhideAllApplications:" target="-1" id="Dhg-Le-xox"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="kCx-OE-vgT"/>
+                            <menuItem title="Quit LoopbackFS" keyEquivalent="q" id="4sb-4s-VLi">
+                                <connections>
+                                    <action selector="terminate:" target="-1" id="Te7-pn-YzF"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="File" id="dMs-cI-mzQ">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="File" id="bib-Uj-vzu">
+                        <items>
+                            <menuItem title="New" keyEquivalent="n" id="Was-JA-tGl">
+                                <connections>
+                                    <action selector="newDocument:" target="-1" id="4Si-XN-c54"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Open…" keyEquivalent="o" id="IAo-SY-fd9">
+                                <connections>
+                                    <action selector="openDocument:" target="-1" id="bVn-NM-KNZ"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Open Recent" id="tXI-mr-wws">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Open Recent" systemMenu="recentDocuments" id="oas-Oc-fiZ">
+                                    <items>
+                                        <menuItem title="Clear Menu" id="vNY-rz-j42">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="clearRecentDocuments:" target="-1" id="Daa-9d-B3U"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="m54-Is-iLE"/>
+                            <menuItem title="Close" keyEquivalent="w" id="DVo-aG-piG">
+                                <connections>
+                                    <action selector="performClose:" target="-1" id="HmO-Ls-i7Q"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Save…" keyEquivalent="s" id="pxx-59-PXV">
+                                <connections>
+                                    <action selector="saveDocument:" target="-1" id="teZ-XB-qJY"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Save As…" keyEquivalent="S" id="Bw7-FT-i3A">
+                                <connections>
+                                    <action selector="saveDocumentAs:" target="-1" id="mDf-zr-I0C"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Revert to Saved" keyEquivalent="r" id="KaW-ft-85H">
+                                <connections>
+                                    <action selector="revertDocumentToSaved:" target="-1" id="iJ3-Pv-kwq"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="aJh-i4-bef"/>
+                            <menuItem title="Page Setup…" keyEquivalent="P" id="qIS-W8-SiK">
+                                <modifierMask key="keyEquivalentModifierMask" shift="YES" command="YES"/>
+                                <connections>
+                                    <action selector="runPageLayout:" target="-1" id="Din-rz-gC5"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Print…" keyEquivalent="p" id="aTl-1u-JFS">
+                                <connections>
+                                    <action selector="print:" target="-1" id="qaZ-4w-aoO"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Edit" id="5QF-Oa-p0T">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Edit" id="W48-6f-4Dl">
+                        <items>
+                            <menuItem title="Undo" keyEquivalent="z" id="dRJ-4n-Yzg">
+                                <connections>
+                                    <action selector="undo:" target="-1" id="M6e-cu-g7V"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Redo" keyEquivalent="Z" id="6dh-zS-Vam">
+                                <connections>
+                                    <action selector="redo:" target="-1" id="oIA-Rs-6OD"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="WRV-NI-Exz"/>
+                            <menuItem title="Cut" keyEquivalent="x" id="uRl-iY-unG">
+                                <connections>
+                                    <action selector="cut:" target="-1" id="YJe-68-I9s"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Copy" keyEquivalent="c" id="x3v-GG-iWU">
+                                <connections>
+                                    <action selector="copy:" target="-1" id="G1f-GL-Joy"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Paste" keyEquivalent="v" id="gVA-U4-sdL">
+                                <connections>
+                                    <action selector="paste:" target="-1" id="UvS-8e-Qdg"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Paste and Match Style" keyEquivalent="V" id="WeT-3V-zwk">
+                                <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                <connections>
+                                    <action selector="pasteAsPlainText:" target="-1" id="cEh-KX-wJQ"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Delete" id="pa3-QI-u2k">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="delete:" target="-1" id="0Mk-Ml-PaM"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Select All" keyEquivalent="a" id="Ruw-6m-B2m">
+                                <connections>
+                                    <action selector="selectAll:" target="-1" id="VNm-Mi-diN"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="uyl-h8-XO2"/>
+                            <menuItem title="Find" id="4EN-yA-p0u">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Find" id="1b7-l0-nxx">
+                                    <items>
+                                        <menuItem title="Find…" tag="1" keyEquivalent="f" id="Xz5-n4-O0W">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="cD7-Qs-BN4"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Find and Replace…" tag="12" keyEquivalent="f" id="YEy-JH-Tfz">
+                                            <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="WD3-Gg-5AJ"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Find Next" tag="2" keyEquivalent="g" id="q09-fT-Sye">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="NDo-RZ-v9R"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Find Previous" tag="3" keyEquivalent="G" id="OwM-mh-QMV">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="HOh-sY-3ay"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Use Selection for Find" tag="7" keyEquivalent="e" id="buJ-ug-pKt">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="U76-nv-p5D"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Jump to Selection" keyEquivalent="j" id="S0p-oC-mLd">
+                                            <connections>
+                                                <action selector="centerSelectionInVisibleArea:" target="-1" id="IOG-6D-g5B"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Spelling and Grammar" id="Dv1-io-Yv7">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Spelling" id="3IN-sU-3Bg">
+                                    <items>
+                                        <menuItem title="Show Spelling and Grammar" keyEquivalent=":" id="HFo-cy-zxI">
+                                            <connections>
+                                                <action selector="showGuessPanel:" target="-1" id="vFj-Ks-hy3"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Check Document Now" keyEquivalent=";" id="hz2-CU-CR7">
+                                            <connections>
+                                                <action selector="checkSpelling:" target="-1" id="fz7-VC-reM"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="bNw-od-mp5"/>
+                                        <menuItem title="Check Spelling While Typing" id="rbD-Rh-wIN">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleContinuousSpellChecking:" target="-1" id="7w6-Qz-0kB"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Check Grammar With Spelling" id="mK6-2p-4JG">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleGrammarChecking:" target="-1" id="muD-Qn-j4w"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Correct Spelling Automatically" id="78Y-hA-62v">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticSpellingCorrection:" target="-1" id="2lM-Qi-WAP"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Substitutions" id="9ic-FL-obx">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Substitutions" id="FeM-D8-WVr">
+                                    <items>
+                                        <menuItem title="Show Substitutions" id="z6F-FW-3nz">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="orderFrontSubstitutionsPanel:" target="-1" id="oku-mr-iSq"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="gPx-C9-uUO"/>
+                                        <menuItem title="Smart Copy/Paste" id="9yt-4B-nSM">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleSmartInsertDelete:" target="-1" id="3IJ-Se-DZD"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smart Quotes" id="hQb-2v-fYv">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticQuoteSubstitution:" target="-1" id="ptq-xd-QOA"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smart Dashes" id="rgM-f4-ycn">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticDashSubstitution:" target="-1" id="oCt-pO-9gS"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smart Links" id="cwL-P1-jid">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticLinkDetection:" target="-1" id="Gip-E3-Fov"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Data Detectors" id="tRr-pd-1PS">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticDataDetection:" target="-1" id="R1I-Nq-Kbl"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Text Replacement" id="HFQ-gK-NFA">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticTextReplacement:" target="-1" id="DvP-Fe-Py6"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Transformations" id="2oI-Rn-ZJC">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Transformations" id="c8a-y6-VQd">
+                                    <items>
+                                        <menuItem title="Make Upper Case" id="vmV-6d-7jI">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="uppercaseWord:" target="-1" id="sPh-Tk-edu"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Make Lower Case" id="d9M-CD-aMd">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="lowercaseWord:" target="-1" id="iUZ-b5-hil"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Capitalize" id="UEZ-Bs-lqG">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="capitalizeWord:" target="-1" id="26H-TL-nsh"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Speech" id="xrE-MZ-jX0">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Speech" id="3rS-ZA-NoH">
+                                    <items>
+                                        <menuItem title="Start Speaking" id="Ynk-f8-cLZ">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="startSpeaking:" target="-1" id="654-Ng-kyl"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Stop Speaking" id="Oyz-dy-DGm">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="stopSpeaking:" target="-1" id="dX8-6p-jy9"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Format" id="jxT-CU-nIS">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Format" id="GEO-Iw-cKr">
+                        <items>
+                            <menuItem title="Font" id="Gi5-1S-RQB">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Font" systemMenu="font" id="aXa-aM-Jaq">
+                                    <items>
+                                        <menuItem title="Show Fonts" keyEquivalent="t" id="Q5e-8K-NDq">
+                                            <connections>
+                                                <action selector="orderFrontFontPanel:" target="YLy-65-1bz" id="WHr-nq-2xA"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Bold" tag="2" keyEquivalent="b" id="GB9-OM-e27">
+                                            <connections>
+                                                <action selector="addFontTrait:" target="YLy-65-1bz" id="hqk-hr-sYV"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Italic" tag="1" keyEquivalent="i" id="Vjx-xi-njq">
+                                            <connections>
+                                                <action selector="addFontTrait:" target="YLy-65-1bz" id="IHV-OB-c03"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Underline" keyEquivalent="u" id="WRG-CD-K1S">
+                                            <connections>
+                                                <action selector="underline:" target="-1" id="FYS-2b-JAY"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="5gT-KC-WSO"/>
+                                        <menuItem title="Bigger" tag="3" keyEquivalent="+" id="Ptp-SP-VEL">
+                                            <connections>
+                                                <action selector="modifyFont:" target="YLy-65-1bz" id="Uc7-di-UnL"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smaller" tag="4" keyEquivalent="-" id="i1d-Er-qST">
+                                            <connections>
+                                                <action selector="modifyFont:" target="YLy-65-1bz" id="HcX-Lf-eNd"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="kx3-Dk-x3B"/>
+                                        <menuItem title="Kern" id="jBQ-r6-VK2">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <menu key="submenu" title="Kern" id="tlD-Oa-oAM">
+                                                <items>
+                                                    <menuItem title="Use Default" id="GUa-eO-cwY">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="useStandardKerning:" target="-1" id="6dk-9l-Ckg"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Use None" id="cDB-IK-hbR">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="turnOffKerning:" target="-1" id="U8a-gz-Maa"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Tighten" id="46P-cB-AYj">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="tightenKerning:" target="-1" id="hr7-Nz-8ro"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Loosen" id="ogc-rX-tC1">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="loosenKerning:" target="-1" id="8i4-f9-FKE"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                </items>
+                                            </menu>
+                                        </menuItem>
+                                        <menuItem title="Ligatures" id="o6e-r0-MWq">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <menu key="submenu" title="Ligatures" id="w0m-vy-SC9">
+                                                <items>
+                                                    <menuItem title="Use Default" id="agt-UL-0e3">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="useStandardLigatures:" target="-1" id="7uR-wd-Dx6"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Use None" id="J7y-lM-qPV">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="turnOffLigatures:" target="-1" id="iX2-gA-Ilz"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Use All" id="xQD-1f-W4t">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="useAllLigatures:" target="-1" id="KcB-kA-TuK"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                </items>
+                                            </menu>
+                                        </menuItem>
+                                        <menuItem title="Baseline" id="OaQ-X3-Vso">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <menu key="submenu" title="Baseline" id="ijk-EB-dga">
+                                                <items>
+                                                    <menuItem title="Use Default" id="3Om-Ey-2VK">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="unscript:" target="-1" id="0vZ-95-Ywn"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Superscript" id="Rqc-34-cIF">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="superscript:" target="-1" id="3qV-fo-wpU"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Subscript" id="I0S-gh-46l">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="subscript:" target="-1" id="Q6W-4W-IGz"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Raise" id="2h7-ER-AoG">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="raiseBaseline:" target="-1" id="4sk-31-7Q9"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem title="Lower" id="1tx-W0-xDw">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="lowerBaseline:" target="-1" id="OF1-bc-KW4"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                </items>
+                                            </menu>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="Ndw-q3-faq"/>
+                                        <menuItem title="Show Colors" keyEquivalent="C" id="bgn-CT-cEk">
+                                            <connections>
+                                                <action selector="orderFrontColorPanel:" target="-1" id="mSX-Xz-DV3"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="iMs-zA-UFJ"/>
+                                        <menuItem title="Copy Style" keyEquivalent="c" id="5Vv-lz-BsD">
+                                            <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="copyFont:" target="-1" id="GJO-xA-L4q"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Paste Style" keyEquivalent="v" id="vKC-jM-MkH">
+                                            <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="pasteFont:" target="-1" id="JfD-CL-leO"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Text" id="Fal-I4-PZk">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Text" id="d9c-me-L2H">
+                                    <items>
+                                        <menuItem title="Align Left" keyEquivalent="{" id="ZM1-6Q-yy1">
+                                            <connections>
+                                                <action selector="alignLeft:" target="-1" id="zUv-R1-uAa"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Center" keyEquivalent="|" id="VIY-Ag-zcb">
+                                            <connections>
+                                                <action selector="alignCenter:" target="-1" id="spX-mk-kcS"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Justify" id="J5U-5w-g23">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="alignJustified:" target="-1" id="ljL-7U-jND"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Align Right" keyEquivalent="}" id="wb2-vD-lq4">
+                                            <connections>
+                                                <action selector="alignRight:" target="-1" id="r48-bG-YeY"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="4s2-GY-VfK"/>
+                                        <menuItem title="Writing Direction" id="H1b-Si-o9J">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <menu key="submenu" title="Writing Direction" id="8mr-sm-Yjd">
+                                                <items>
+                                                    <menuItem title="Paragraph" enabled="NO" id="ZvO-Gk-QUH">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                    </menuItem>
+                                                    <menuItem id="YGs-j5-SAR">
+                                                        <string key="title">	Default</string>
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="makeBaseWritingDirectionNatural:" target="-1" id="qtV-5e-UBP"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem id="Lbh-J2-qVU">
+                                                        <string key="title">	Left to Right</string>
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="makeBaseWritingDirectionLeftToRight:" target="-1" id="S0X-9S-QSf"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem id="jFq-tB-4Kx">
+                                                        <string key="title">	Right to Left</string>
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="makeBaseWritingDirectionRightToLeft:" target="-1" id="5fk-qB-AqJ"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem isSeparatorItem="YES" id="swp-gr-a21"/>
+                                                    <menuItem title="Selection" enabled="NO" id="cqv-fj-IhA">
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                    </menuItem>
+                                                    <menuItem id="Nop-cj-93Q">
+                                                        <string key="title">	Default</string>
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="makeTextWritingDirectionNatural:" target="-1" id="lPI-Se-ZHp"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem id="BgM-ve-c93">
+                                                        <string key="title">	Left to Right</string>
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="makeTextWritingDirectionLeftToRight:" target="-1" id="caW-Bv-w94"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                    <menuItem id="RB4-Sm-HuC">
+                                                        <string key="title">	Right to Left</string>
+                                                        <modifierMask key="keyEquivalentModifierMask"/>
+                                                        <connections>
+                                                            <action selector="makeTextWritingDirectionRightToLeft:" target="-1" id="EXD-6r-ZUu"/>
+                                                        </connections>
+                                                    </menuItem>
+                                                </items>
+                                            </menu>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="fKy-g9-1gm"/>
+                                        <menuItem title="Show Ruler" id="vLm-3I-IUL">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleRuler:" target="-1" id="FOx-HJ-KwY"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Copy Ruler" keyEquivalent="c" id="MkV-Pr-PK5">
+                                            <modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="copyRuler:" target="-1" id="71i-fW-3W2"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Paste Ruler" keyEquivalent="v" id="LVM-kO-fVI">
+                                            <modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="pasteRuler:" target="-1" id="cSh-wd-qM2"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="View" id="H8h-7b-M4v">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="View" id="HyV-fh-RgO">
+                        <items>
+                            <menuItem title="Show Toolbar" keyEquivalent="t" id="snW-S8-Cw5">
+                                <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                <connections>
+                                    <action selector="toggleToolbarShown:" target="-1" id="BXY-wc-z0C"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Customize Toolbar…" id="1UK-8n-QPP">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="runToolbarCustomizationPalette:" target="-1" id="pQI-g3-MTW"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="hB3-LF-h0Y"/>
+                            <menuItem title="Show Sidebar" keyEquivalent="s" id="kIP-vf-haE">
+                                <modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
+                                <connections>
+                                    <action selector="toggleSidebar:" target="-1" id="iwa-gc-5KM"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Enter Full Screen" keyEquivalent="f" id="4J7-dP-txa">
+                                <modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
+                                <connections>
+                                    <action selector="toggleFullScreen:" target="-1" id="dU3-MA-1Rq"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Window" id="aUF-d1-5bR">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Window" systemMenu="window" id="Td7-aD-5lo">
+                        <items>
+                            <menuItem title="Minimize" keyEquivalent="m" id="OY7-WF-poV">
+                                <connections>
+                                    <action selector="performMiniaturize:" target="-1" id="VwT-WD-YPe"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Zoom" id="R4o-n2-Eq4">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="performZoom:" target="-1" id="DIl-cC-cCs"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="eu3-7i-yIM"/>
+                            <menuItem title="Bring All to Front" id="LE2-aR-0XJ">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="arrangeInFront:" target="-1" id="DRN-fu-gQh"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Help" id="wpr-3q-Mcd">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Help" systemMenu="help" id="F2S-fz-NVQ">
+                        <items>
+                            <menuItem title="LoopbackFS Help" keyEquivalent="?" id="FKE-Sm-Kum">
+                                <connections>
+                                    <action selector="showHelp:" target="-1" id="y7X-2Q-9no"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+            </items>
+            <point key="canvasLocation" x="40" y="154"/>
+        </menu>
+    </objects>
+</document>

LoopbackFS-Swift/LoopbackFS/Bridging-Header.h

@@ -0,0 +1,13 @@
+//
+//  Bridging-Header.h
+//  LoopbackFS
+//
+//  Created by Gunnar Herzog on 27/01/2017.
+//  Copyright © 2017 KF Interactive GmbH. All rights reserved.
+//  Copyright © 2019 Benjamin Fleischer. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+#import <macFUSE/macFUSE.h>
+
+#import <sys/vnode.h>

LoopbackFS-Swift/LoopbackFS/Info.plist

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2017 KF Interactive GmbH. All rights reserved.</string>
+	<key>NSMainNibFile</key>
+	<string>MainMenu</string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+</dict>
+</plist>

LoopbackFS-Swift/LoopbackFS/LoopbackFS.entitlements

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.cs.disable-library-validation</key>
+	<true/>
+</dict>
+</plist>

LoopbackFS-Swift/LoopbackFS/LoopbackFS.swift

@@ -0,0 +1,359 @@
+//
+//  LoopbackFS.swift
+//  LoopbackFS
+//
+//  Created by Gunnar Herzog on 27/01/2017.
+//  Copyright © 2017 KF Interactive GmbH. All rights reserved.
+//  Copyright © 2019-2020 Benjamin Fleischer. All rights reserved.
+//
+
+import Foundation
+
+final class LoopbackFS: NSObject {
+
+    let rootPath: String
+    
+    init(rootPath: String) {
+        self.rootPath = rootPath
+    }
+
+    // MARK: - Moving an Item
+
+    override func moveItem(atPath source: String!, toPath destination: String!, options: GMUserFileSystemMoveOption) throws {
+        let sourcePath = (rootPath.appending(source) as NSString).utf8String!
+        let destinationPath = (rootPath.appending(destination) as NSString).utf8String!
+
+        var returnValue: Int32 = 0
+        if options.rawValue == 0 {
+            returnValue = rename(sourcePath, destinationPath)
+        } else {
+            if #available(OSX 10.12, *) {
+                var flags: UInt32 = 0;
+                if options.rawValue & GMUserFileSystemMoveOption.swap.rawValue != 0 {
+                  flags |= UInt32(RENAME_SWAP);
+                }
+                if options.rawValue & GMUserFileSystemMoveOption.exclusive.rawValue != 0 {
+                  flags |= UInt32(RENAME_EXCL);
+                }
+                returnValue = renamex_np(sourcePath, destinationPath, flags)
+            } else {
+                throw NSError(posixErrorCode: ENOTSUP);
+            };
+        }
+        if returnValue < 0 {
+            throw NSError(posixErrorCode: errno)
+        }
+    }
+
+    // MARK: - Removing an Item
+
+    override func removeDirectory(atPath path: String!) throws {
+        // We need to special-case directories here and use the bsd API since
+        // NSFileManager will happily do a recursive remove :-(
+
+        let originalPath = (rootPath.appending(path) as NSString).utf8String!
+
+        let returnValue = rmdir(originalPath)
+        if returnValue < 0 {
+            throw NSError(posixErrorCode: errno)
+        }
+    }
+
+    override func removeItem(atPath path: String!) throws {
+        let originalPath = rootPath.appending(path)
+
+        return try FileManager.default.removeItem(atPath: originalPath)
+    }
+
+    // MARK: - Creating an Item
+
+    override func createDirectory(atPath path: String!, attributes: [AnyHashable : Any]! = [:]) throws {
+        guard let attributes = attributes as? [String: Any] else { throw NSError(posixErrorCode: EPERM) }
+
+        let originalPath = rootPath.appending(path)
+
+        try FileManager.default.createDirectory(atPath: originalPath, withIntermediateDirectories: false, attributes: convertToOptionalFileAttributeKeyDictionary(attributes))
+    }
+
+    override func createFile(atPath path: String!, attributes: [AnyHashable : Any]! = [:], flags: Int32, userData: AutoreleasingUnsafeMutablePointer<AnyObject?>!) throws {
+
+        guard let mode = attributes[FileAttributeKey.posixPermissions] as? mode_t else {
+            throw NSError(posixErrorCode: EPERM)
+        }
+
+        let originalPath = rootPath.appending(path)
+
+        let fileDescriptor = open((originalPath as NSString).utf8String!, flags, mode)
+
+        if fileDescriptor < 0 {
+            throw NSError(posixErrorCode: errno)
+        }
+
+        userData.pointee = NSNumber(value: fileDescriptor)
+    }
+
+    // MARK: - Linking an Item
+
+    override func linkItem(atPath path: String!, toPath otherPath: String!) throws {
+        let originalPath = (rootPath.appending(path) as NSString).utf8String!
+        let originalOtherPath = (rootPath.appending(otherPath) as NSString).utf8String!
+
+        // We use link rather than the NSFileManager equivalent because it will copy
+        // the file rather than hard link if part of the root path is a symlink.
+        if link(originalPath, originalOtherPath) < 0 {
+            throw NSError(posixErrorCode: errno)
+        }
+    }
+
+    // MARK: - Symbolic Links
+
+    override func createSymbolicLink(atPath path: String!, withDestinationPath otherPath: String!) throws {
+        let sourcePath = rootPath.appending(path)
+        try FileManager.default.createSymbolicLink(atPath: sourcePath, withDestinationPath: otherPath)
+    }
+
+    override func destinationOfSymbolicLink(atPath path: String!) throws -> String {
+        let sourcePath = rootPath.appending(path)
+        return try FileManager.default.destinationOfSymbolicLink(atPath: sourcePath)
+    }
+
+    // MARK: - File Contents
+
+    override func openFile(atPath path: String!, mode: Int32, userData: AutoreleasingUnsafeMutablePointer<AnyObject?>!) throws {
+        let originalPath = (rootPath.appending(path) as NSString).utf8String!
+
+        let fileDescriptor = open(originalPath, mode)
+
+        if fileDescriptor < 0 {
+            throw NSError(posixErrorCode: errno)
+        }
+
+        userData.pointee = NSNumber(value: fileDescriptor)
+    }
+
+    override func releaseFile(atPath path: String!, userData: Any!) {
+        guard let num = userData as? NSNumber else {
+            return
+        }
+
+        let fileDescriptor = num.int32Value
+        close(fileDescriptor)
+    }
+
+    override func readFile(atPath path: String!, userData: Any!, buffer: UnsafeMutablePointer<Int8>!, size: Int, offset: off_t, error: NSErrorPointer) -> Int32 {
+        guard let num = userData as? NSNumber else {
+            error?.pointee = NSError(posixErrorCode: EBADF)
+            return -1
+        }
+
+        let fileDescriptor = num.int32Value
+        let returnValue = Int32(pread(fileDescriptor, buffer, size, offset))
+
+        if returnValue < 0 {
+            error?.pointee = NSError(posixErrorCode: errno)
+            return -1
+        }
+        return returnValue
+    }
+
+    override func writeFile(atPath path: String!, userData: Any!, buffer: UnsafePointer<Int8>!, size: Int, offset: off_t, error: NSErrorPointer) -> Int32 {
+        guard let num = userData as? NSNumber else {
+            error?.pointee = NSError(posixErrorCode: EBADF)
+            return -1
+        }
+
+        let fileDescriptor = num.int32Value
+
+        let returnValue = pwrite(fileDescriptor, buffer, size, offset)
+        if returnValue < 0 {
+            error?.pointee = NSError(posixErrorCode: errno)
+        }
+        return Int32(returnValue)
+    }
+
+    override func preallocateFile(atPath path: String!, userData: Any!, options: Int32, offset: off_t, length: off_t) throws {
+        guard let num = userData as? NSNumber else {
+            throw NSError(posixErrorCode: EBADF)
+        }
+
+        let fileDescriptor = num.int32Value
+
+        var fstore = fstore_t()
+        if options & ALLOCATECONTIG == 1 {
+            fstore.fst_flags = UInt32(F_ALLOCATECONTIG)
+        }
+        if options & ALLOCATEALL == 1 {
+            fstore.fst_flags = fstore.fst_flags & UInt32(ALLOCATEALL)
+        }
+        if options & ALLOCATEFROMPEOF == 1 {
+            fstore.fst_posmode = F_PEOFPOSMODE
+        } else if options & ALLOCATEFROMVOL == 1 {
+            fstore.fst_posmode = F_VOLPOSMODE
+        }
+        fstore.fst_offset = offset
+        fstore.fst_length = length
+        if fcntl(fileDescriptor, F_PREALLOCATE, &fstore) == -1 {
+            throw NSError(posixErrorCode: errno)
+        }
+    }
+
+    public override func exchangeDataOfItem(atPath path1: String!, withItemAtPath path2: String!) throws {
+        let sourcePath = (rootPath.appending(path1) as NSString).utf8String!
+        let destinationPath = (rootPath.appending(path2) as NSString).utf8String!
+
+        let returnValue = exchangedata(sourcePath, destinationPath, 0)
+        if returnValue < 0 {
+            throw NSError(posixErrorCode: errno)
+        }
+    }
+
+    // MARK: - Directory Contents
+
+    override func contentsOfDirectory(atPath path: String!) throws -> [Any] {
+        let originalPath = rootPath.appending(path)
+        return try FileManager.default.contentsOfDirectory(atPath: originalPath)
+    }
+
+    // MARK: - Getting and Setting Attributes
+
+    override func attributesOfItem(atPath path: String!, userData: Any!) throws -> [AnyHashable : Any] {
+        let originalPath = rootPath.appending(path)
+        return try FileManager.default.attributesOfItem(atPath: originalPath)
+    }
+
+    override func attributesOfFileSystem(forPath path: String!) throws -> [AnyHashable : Any] {
+        let originalPath = rootPath.appending(path)
+
+        var attributes = try FileManager.default.attributesOfFileSystem(forPath: originalPath)
+        attributes[FileAttributeKey(rawValue: kGMUserFileSystemVolumeSupportsExtendedDatesKey)] = true
+
+        let originalUrl = URL(fileURLWithPath: originalPath, isDirectory: true)
+
+        let volumeSupportsCaseSensitiveNames = try originalUrl.resourceValues(forKeys: [.volumeSupportsCaseSensitiveNamesKey]).volumeSupportsCaseSensitiveNames ?? true
+        attributes[FileAttributeKey(rawValue: kGMUserFileSystemVolumeSupportsCaseSensitiveNamesKey)] = volumeSupportsCaseSensitiveNames
+
+        attributes[FileAttributeKey(rawValue: kGMUserFileSystemVolumeSupportsSwapRenamingKey)] = true
+        attributes[FileAttributeKey(rawValue: kGMUserFileSystemVolumeSupportsExclusiveRenamingKey)] = true
+
+        attributes[FileAttributeKey(rawValue: kGMUserFileSystemVolumeSupportsSetVolumeNameKey)] = true
+
+        return attributes
+    }
+
+    override func setAttributes(_ attributes: [AnyHashable : Any]!, ofItemAtPath path: String!, userData: Any!) throws {
+        guard let attribs = attributes as? [FileAttributeKey: Any] else { throw NSError(posixErrorCode: EINVAL) }
+
+        let originalPath = rootPath.appending(path)
+
+        if let pathPointer = (originalPath as NSString).utf8String {
+            if let offset = attributes[FileAttributeKey.size.rawValue] as? Int64 {
+                let ret = truncate(pathPointer, offset)
+                if ret < 0 {
+                    throw NSError(posixErrorCode: errno)
+                }
+            }
+
+            if let flags = attributes[kGMUserFileSystemFileFlagsKey] as? Int32 {
+                let rc = chflags(pathPointer, UInt32(flags))
+                if rc < 0 {
+                    throw NSError(posixErrorCode: errno)
+                }
+            }
+        }
+
+        try FileManager.default.setAttributes(attribs, ofItemAtPath: originalPath)
+    }
+
+    override func setAttributes(_ attributes: [AnyHashable : Any]!, ofFileSystemAtPath path: String!) throws {
+        // Needed for kGMUserFileSystemVolumeSupportsSetVolumeNameKey
+    }
+    
+    // MARK: - Extended Attributes
+
+    public override func extendedAttributesOfItem(atPath path: Any!) throws -> [Any] {
+        guard let path = path as? String  else {
+            throw NSError(posixErrorCode: ENODEV)
+        }
+
+        let originalUrl = URL(fileURLWithPath: rootPath.appending(path))
+
+        return try originalUrl.withUnsafeFileSystemRepresentation { fileSystemPath -> [String] in
+            let length = listxattr(fileSystemPath, nil, 0, 0)
+            guard length >= 0 else { throw NSError(posixErrorCode: errno) }
+
+            // Create buffer with required size:
+            var data = Data(count: length)
+
+            // Retrieve attribute list:
+            let count = data.count
+            let result = data.withUnsafeMutableBytes {
+                listxattr(fileSystemPath, $0.baseAddress?.assumingMemoryBound(to: Int8.self), count, XATTR_NOFOLLOW)
+            }
+            guard result >= 0 else { throw NSError(posixErrorCode: errno) }
+
+            // Extract attribute names:
+            let list = data.split(separator: 0).compactMap {
+                String(data: Data($0), encoding: .utf8)
+            }
+            return list
+        }
+    }
+
+    public override func value(ofExtendedAttribute name: String!, ofItemAtPath path: String!, position: off_t) throws -> Data {
+        let originalUrl = URL(fileURLWithPath: rootPath.appending(path))
+
+        return try originalUrl.withUnsafeFileSystemRepresentation { fileSystemPath -> Data in
+
+            // Determine attribute size:
+            let length = getxattr(fileSystemPath, name, nil, 0, UInt32(position), XATTR_NOFOLLOW)
+            guard length >= 0 else {
+                throw NSError(posixErrorCode: errno)
+            }
+
+            // Create buffer with required size:
+            var data = Data(count: length)
+
+            // Retrieve attribute:
+            let count = data.count
+            let result = data.withUnsafeMutableBytes {
+                getxattr(fileSystemPath, name,  $0.baseAddress?.assumingMemoryBound(to: Int8.self), count, UInt32(position), XATTR_NOFOLLOW)
+            }
+            guard result >= 0 else {
+                throw NSError(posixErrorCode: errno)
+            }
+            return data
+        }
+    }
+
+    public override func setExtendedAttribute(_ name: String!, ofItemAtPath path: String!, value: Data!, position: off_t, options: Int32) throws {
+        let originalUrl = URL(fileURLWithPath: rootPath.appending(path))
+
+        try originalUrl.withUnsafeFileSystemRepresentation { fileSystemPath in
+            // Setting com.apple.FinderInfo happens in the kernel, so security related
+            // bits are set in the options. We need to explicitly remove them or the call
+            // to setxattr will fail.
+            // TODO: Why is this necessary?
+            let newOptions = options & ~(XATTR_NOSECURITY | XATTR_NODEFAULT)
+
+            let result = value.withUnsafeBytes {
+                setxattr(fileSystemPath, name, $0.baseAddress?.assumingMemoryBound(to: Int8.self), value.count, UInt32(position), newOptions | XATTR_NOFOLLOW)
+            }
+            guard result >= 0 else { throw NSError(posixErrorCode: errno) }
+        }
+    }
+
+    public override func removeExtendedAttribute(_ name: String!, ofItemAtPath path: String!) throws {
+        let originalUrl = URL(fileURLWithPath: rootPath.appending(path))
+
+        try originalUrl.withUnsafeFileSystemRepresentation { fileSystemPath in
+            let result = removexattr(fileSystemPath, name, XATTR_NOFOLLOW)
+            guard result >= 0 else { throw NSError(posixErrorCode: errno) }
+        }
+    }
+}
+
+// Helper function inserted by Swift 4.2 migrator.
+fileprivate func convertToOptionalFileAttributeKeyDictionary(_ input: [String: Any]?) -> [FileAttributeKey: Any]? {
+	guard let input = input else { return nil }
+	return Dictionary(uniqueKeysWithValues: input.map { key, value in (FileAttributeKey(rawValue: key), value)})
+}

LoopbackFS-Swift/LoopbackFS/NSError+POSIX.swift

@@ -0,0 +1,15 @@
+//
+//  NSError+POSIX.swift
+//  LoopbackFS
+//
+//  Created by Gunnar Herzog on 27/01/2017.
+//  Copyright © 2017 KF Interactive GmbH. All rights reserved.
+//
+
+import Foundation
+
+extension NSError {
+    convenience init(posixErrorCode err: Int32) {
+        self.init(domain: NSPOSIXErrorDomain, code: Int(err), userInfo: [NSLocalizedDescriptionKey: String(cString: strerror(err))])
+    }
+}