diff --git a/.cirrus.yml b/.cirrus.yml
index e986673ba..2f6e994d2 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -5,7 +5,7 @@ freebsd_task:
   env:
     ASSUME_ALWAYS_YES: yes
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - gmake -j4
 
 freebsd_task:
@@ -15,7 +15,7 @@ freebsd_task:
   env:
     ASSUME_ALWAYS_YES: yes
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - gmake -j4
 
 freebsd_task:
@@ -25,7 +25,7 @@ freebsd_task:
   env:
     ASSUME_ALWAYS_YES: yes
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - gmake -j4
 
 freebsd_task:
@@ -35,7 +35,7 @@ freebsd_task:
   env:
     ASSUME_ALWAYS_YES: yes
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - gmake -j4
 
 
@@ -43,7 +43,7 @@ freebsd_task:
 #  osx_instance:
 #    image: catalina-base
 #  script:
-#    - tools/install-build-pkgs
+#    - buildtools/install-build-pkgs
 #    - gmake -j4
 
 linux_task:
@@ -54,7 +54,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -65,7 +65,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -76,7 +76,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -87,7 +87,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -98,7 +98,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -109,7 +109,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -120,7 +120,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -131,7 +131,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -142,7 +142,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -153,7 +153,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -165,7 +165,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -177,7 +177,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -189,7 +189,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -201,7 +201,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -213,7 +213,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -225,7 +225,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -237,7 +237,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -249,7 +249,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -261,7 +261,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -273,7 +273,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -285,7 +285,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -297,7 +297,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -309,7 +309,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -324,7 +324,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -339,7 +339,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -354,7 +354,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -369,7 +369,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -384,7 +384,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -399,7 +399,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -414,7 +414,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -429,7 +429,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -444,7 +444,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -459,7 +459,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -474,7 +474,22 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
+    - git fetch
+    - make deb
+    - apt-get -y install fuse
+    - dpkg -i ../*.deb
+    - mergerfs -v || true
+
+linux_task:
+  name: "debian:12"
+  container:
+    image: debian:12
+    cpu: 4
+    memory: 4G
+  timeout_in: 15m
+  script:
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -489,7 +504,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -504,7 +519,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
diff --git a/LICENSE b/LICENSE
index 1b8d30965..2f46d03df 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,7 +1,7 @@
 /*
   ISC License
 
-  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+  Copyright (c) 2024, Antonio SJ Musumeci <trapexit@spawn.link>
 
   Permission to use, copy, modify, and/or distribute this software for any
   purpose with or without fee is hereby granted, provided that the above
diff --git a/Makefile b/Makefile
index 784f41d83..1fd74910b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-#  Copyright (c) 2016, Antonio SJ Musumeci <trapexit@spawn.link>
+#  Copyright (c) 2024, Antonio SJ Musumeci <trapexit@spawn.link>
 #
 #  Permission to use, copy, modify, and/or distribute this software for any
 #  purpose with or without fee is hereby granted, provided that the above
@@ -26,7 +26,7 @@ STRIP     = strip
 PANDOC    = pandoc
 SED       = sed
 RPMBUILD  = rpmbuild
-GIT2DEBCL = ./tools/git2debcl
+GIT2DEBCL = ./buildtools/git2debcl
 PKGCONFIG = pkg-config
 
 GIT_REPO = 0
@@ -68,6 +68,10 @@ TESTS_DEPS  = $(TESTS:tests/%.cpp=build/.tests/%.d)
 TESTS_DEPS += $(DEPS)
 
 MANPAGE     = mergerfs.1
+CFLAGS      ?= ${OPT_FLAGS}
+CFLAGS      := ${CFLAGS} \
+               -Wall \
+               -Wno-unused-result
 CXXFLAGS    ?= ${OPT_FLAGS}
 CXXFLAGS    := \
               ${CXXFLAGS} \
@@ -92,6 +96,7 @@ LDFLAGS := \
     -pthread \
     -lrt
 
+# https://www.gnu.org/prep/standards/html_node/Directory-Variables.html
 DESTDIR       =
 PREFIX        = /usr/local
 EXEC_PREFIX   = $(PREFIX)
@@ -99,11 +104,13 @@ DATAROOTDIR   = $(PREFIX)/share
 DATADIR       = $(DATAROOTDIR)
 BINDIR        = $(EXEC_PREFIX)/bin
 SBINDIR       = $(EXEC_PREFIX)/sbin
+LIBDIR        = $(EXEC_PREFIX)/lib
 MANDIR        = $(DATAROOTDIR)/man
 MAN1DIR       = $(MANDIR)/man1
 
 INSTALLBINDIR  = $(DESTDIR)$(BINDIR)
 INSTALLSBINDIR = $(DESTDIR)$(SBINDIR)
+INSTALLLIBDIR  = $(DESTDIR)$(LIBDIR)/mergerfs
 INSTALLMAN1DIR = $(DESTDIR)$(MAN1DIR)
 
 .PHONY: all
@@ -141,7 +148,7 @@ endif
 
 .PHONY: version
 version:
-	tools/update-version
+	./buildtools/update-version
 
 build/stamp:
 	$(MKDIR) -p build/.src build/.tests
@@ -153,6 +160,10 @@ build/.src/%.o: src/%.cpp
 build/.tests/%.o: tests/%.cpp
 	$(CXX) $(CXXFLAGS) $(TESTS_FLAGS) $(FUSE_FLAGS) $(MFS_FLAGS) $(CPPFLAGS) -c $< -o $@
 
+build/preload.so: build/stamp tools/preload.c
+	$(CC) -shared -fPIC $(CFLAGS) $(CPPFLAGS) -o $@ tools/preload.c
+
+preload: build/preload.so
 
 .PHONY: clean
 clean: rpm-clean
@@ -166,7 +177,7 @@ ifeq ($(GIT_REPO),1)
 endif
 
 .PHONY: install
-install: install-base install-mount-tools install-man
+install: install-base install-mount-tools install-preload install-man
 
 install-base: build/mergerfs
 	$(MKDIR) -p "$(INSTALLBINDIR)"
@@ -180,6 +191,10 @@ install-man: $(MANPAGE)
 	$(MKDIR) -p "$(INSTALLMAN1DIR)"
 	$(INSTALL) -v -m 0644 "man/$(MANPAGE)" "$(INSTALLMAN1DIR)/$(MANPAGE)"
 
+install-preload: preload
+	$(MKDIR) -p "$(INSTALLLIBDIR)"
+	$(INSTALL) -v -m 444 "build/preload.so" "$(INSTALLLIBDIR)/preload.so"
+
 install-strip: install-base
 	$(STRIP) "$(INSTALLBINDIR)/mergerfs"
 
@@ -225,13 +240,13 @@ endif
 signed-deb:
 	$(MAKE) distclean
 	$(MAKE) debian-changelog
-	dpkg-source -b .
+#	dpkg-source -b .
 	dpkg-buildpackage -nc
 
 deb:
 	$(MAKE) distclean
 	$(MAKE) debian-changelog
-	dpkg-source -b .
+#	dpkg-source -b .
 	dpkg-buildpackage -nc -uc -us
 
 .PHONY: rpm-clean
@@ -250,7 +265,7 @@ rpm: tarball
 
 .PHONY: install-build-pkgs
 install-build-pkgs:
-	tools/install-build-pkgs
+	./buildtools/install-build-pkgs
 
 .PHONY: libfuse
 libfuse:
diff --git a/README.md b/README.md
index ae5d20166..ddcf5a855 100644
--- a/README.md
+++ b/README.md
@@ -937,7 +937,7 @@ By default FUSE would issue a flush before the release of a file
 descriptor. This was considered a bit aggressive and a feature added
 to give the FUSE server the ability to choose when that happens.
 
-Options: 
+Options:
 * always
 * never
 * opened-for-write
@@ -1288,6 +1288,52 @@ typedef char IOCTL_BUF[4096];
 
 # TOOLING
 
+## preload.so
+
+EXPERIMENTAL
+
+This preloadable library overrides the creation and opening of files
+in order to simulate passthrough file IO. It catches the
+open/creat/fopen calls, lets mergerfs do the call, queries mergerfs
+for the branch the file exists on, and reopens the file on the underlying
+filesystem. Meaning that you will get native read/write performance.
+
+This will only work on dynamically linked software. Anything
+statically compiled will not work. Many GoLang and Rust apps are
+statically compiled.
+
+The library will not interfere with non-mergerfs filesystems.
+
+While the library was written to account for a number of edgecases
+there could be some yet accounted for so please report any oddities.
+
+
+### general usage
+
+```
+LD_PRELOAD=/usr/lib/mergerfs/preload.so touch /mnt/mergerfs/filename
+```
+
+### Docker usage
+
+Assume `/mnt/fs0` and `/mnt/fs1` are pooled with mergerfs at
+`/mnt/mergerfs`.
+
+Remember that you must bind into the container the original host paths
+to the same locations otherwise the preload module will not be able to
+find the files.
+
+```
+docker run \
+  -e LD_PRELOAD=/usr/lib/mergerfs/preload.so \
+  -v /usr/lib/mergerfs/preload.so:/usr/lib/mergerfs/preload.so:ro \
+  -v /mnt:/mnt \
+  ubuntu:latest \
+  bash
+```
+
+## Misc
+
 * https://github.com/trapexit/mergerfs-tools
   * mergerfs.ctl: A tool to make it easier to query and configure mergerfs at runtime
   * mergerfs.fsck: Provides permissions and ownership auditing and the ability to fix them
diff --git a/tools/create-branches b/buildtools/create-branches
similarity index 100%
rename from tools/create-branches
rename to buildtools/create-branches
diff --git a/tools/git2debcl b/buildtools/git2debcl
similarity index 100%
rename from tools/git2debcl
rename to buildtools/git2debcl
diff --git a/tools/install-build-pkgs b/buildtools/install-build-pkgs
similarity index 100%
rename from tools/install-build-pkgs
rename to buildtools/install-build-pkgs
diff --git a/tools/update-version b/buildtools/update-version
similarity index 100%
rename from tools/update-version
rename to buildtools/update-version
diff --git a/man/mergerfs.1 b/man/mergerfs.1
index 95e37fc5f..7c2d648b8 100644
--- a/man/mergerfs.1
+++ b/man/mergerfs.1
@@ -325,14 +325,12 @@ by the number of process threads plus read thread count.
 on file close.
 Mostly for when writeback is enabled or merging network filesystems.
 (default: opened-for-write)
-.RS 2
 .IP \[bu] 2
 \f[B]scheduling-priority=INT\f[R]: Set mergerfs\[cq] scheduling
 priority.
 Valid values range from -20 to 19.
 See \f[C]setpriority\f[R] man page for more details.
 (default: -10)
-.RE
 .IP \[bu] 2
 \f[B]fsname=STR\f[R]: Sets the name of the filesystem as seen in
 \f[B]mount\f[R], \f[B]df\f[R], etc.
@@ -428,8 +426,8 @@ Use \f[C]async_read=false\f[R] instead.
 .IP \[bu] 2
 \f[B]splice_move\f[R]: deprecated - Does nothing.
 .IP \[bu] 2
-\f[B]allow_other\f[R]: deprecated - mergerfs always sets this FUSE
-option as normal permissions can be used to limit access.
+\f[B]allow_other\f[R]: deprecated - mergerfs v2.35.0 and newer sets this
+FUSE option automatically if running as root.
 .IP \[bu] 2
 \f[B]use_ino\f[R]: deprecated - mergerfs should always control inode
 calculation so this is enabled all the time.
@@ -1724,6 +1722,52 @@ IOCTL_INVALIDATE_ALL_NODES: Same as SIGUSR1.
 Send invalidation notifications to the kernel for all files causing
 unused files to be released from memory.
 .SH TOOLING
+.SS preload.so
+.PP
+EXPERIMENTAL
+.PP
+This preloadable library overrides the creation and opening of files in
+order to simulate passthrough file IO.
+It catches the open/creat/fopen calls, lets mergerfs do the call,
+queries mergerfs for the branch the file exists on, and reopens the file
+on the underlying filesystem.
+Meaning that you will get native read/write performance.
+.PP
+This will only work on dynamically linked software.
+Anything statically compiled will not work.
+Many GoLang and Rust apps are statically compiled.
+.PP
+The library will not interfere with non-mergerfs filesystems.
+.PP
+While the library was written to account for a number of edgecases there
+could be some yet accounted for so please report any oddities.
+.SS general usage
+.IP
+.nf
+\f[C]
+LD_PRELOAD=/usr/lib/mergerfs/preload.so touch /mnt/mergerfs/filename
+\f[R]
+.fi
+.SS Docker usage
+.PP
+Assume \f[C]/mnt/fs0\f[R] and \f[C]/mnt/fs1\f[R] are pooled with
+mergerfs at \f[C]/mnt/mergerfs\f[R].
+.PP
+Remember that you must bind into the container the original host paths
+to the same locations otherwise the preload module will not be able to
+find the files.
+.IP
+.nf
+\f[C]
+docker run \[rs]
+  -e LD_PRELOAD=/usr/lib/mergerfs/preload.so \[rs]
+  -v /usr/lib/mergerfs/preload.so:/usr/lib/mergerfs/preload.so:ro \[rs]
+  -v /mnt:/mnt \[rs]
+  ubuntu:latest \[rs]
+  bash
+\f[R]
+.fi
+.SS Misc
 .IP \[bu] 2
 https://github.com/trapexit/mergerfs-tools
 .RS 2
diff --git a/mergerfs.spec b/mergerfs.spec
index e3aca5188..2a7c9e576 100644
--- a/mergerfs.spec
+++ b/mergerfs.spec
@@ -35,6 +35,7 @@ make install PREFIX=%{_prefix} DESTDIR=%{buildroot}
 /usr/bin/mergerfs
 /usr/bin/mergerfs-fusermount
 /sbin/mount.mergerfs
+/usr/lib/mergerfs/preload.so
 %doc %{_mandir}/*
 
 %changelog
diff --git a/tools/preload.c b/tools/preload.c
new file mode 100644
index 000000000..4c586086e
--- /dev/null
+++ b/tools/preload.c
@@ -0,0 +1,427 @@
+/*
+  ISC License
+
+  Copyright (c) 2024, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#define _GNU_SOURCE
+#define _POSIX_C_SOURCE 200809L
+
+#include <assert.h>
+#include <dlfcn.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <stdarg.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+typedef char IOCTL_BUF[4096];
+#define IOCTL_APP_TYPE  0xDF
+#define IOCTL_FILE_INFO _IOWR(IOCTL_APP_TYPE,0,IOCTL_BUF)
+
+#define LOAD_FUNC(func)                                         \
+  do                                                            \
+    {                                                           \
+      if(!_libc_##func)                                         \
+        _libc_##func = (func##_func_t)dlsym(RTLD_NEXT,#func);   \
+      assert(_libc_##func != NULL);                             \
+    }                                                           \
+  while(0)
+
+typedef int (*open_func_t)(const char*, int, ...);
+typedef int (*open64_func_t)(const char*, int, ...);
+typedef int (*openat_func_t)(int, const char*, int, ...);
+typedef int (*openat64_func_t)(int, const char*, int, ...);
+typedef int (*creat_func_t)(const char*, mode_t);
+typedef int (*creat64_func_t)(const char*, mode_t);
+typedef FILE* (*fopen_func_t)(const char*, const char*);
+typedef FILE* (*fopen64_func_t)(const char*, const char*);
+
+static open_func_t     _libc_open     = NULL;
+static open64_func_t   _libc_open64   = NULL;
+static openat_func_t   _libc_openat   = NULL;
+static openat64_func_t _libc_openat64 = NULL;
+static fopen_func_t    _libc_fopen    = NULL;
+static fopen64_func_t  _libc_fopen64  = NULL;
+static creat_func_t    _libc_creat    = NULL;
+static creat64_func_t  _libc_creat64  = NULL;
+
+static
+int
+get_underlying_filepath(int   fd_,
+                        char *filepath_)
+{
+  int rv;
+
+  strcpy(filepath_,"fullpath");
+  rv = ioctl(fd_,IOCTL_FILE_INFO,filepath_);
+  if(rv == -1)
+    return -1;
+
+  return rv;
+}
+
+static
+void
+strip_exec(const char *orig_mode_,
+           char       *new_mode_)
+{
+  size_t i;
+  size_t j;
+
+  for(i = j = 0; orig_mode_[i]; i++)
+    {
+      if(orig_mode_[i] == 'x')
+        continue;
+      new_mode_[j++] = orig_mode_[i];
+    }
+
+  new_mode_[j] = '\0';
+}
+
+int
+open(const char *pathname_,
+     int         flags_,
+     ...)
+{
+  int rv;
+  int fd;
+  mode_t mode;
+  struct stat st;
+
+  LOAD_FUNC(open);
+
+  mode = 0;
+  if(flags_ & O_CREAT)
+    {
+      va_list args;
+      va_start(args,flags_);
+      mode = va_arg(args,mode_t);
+      va_end(args);
+    }
+
+  fd = _libc_open(pathname_,flags_,mode);
+  if(fd == -1)
+    return -1;
+
+  if(flags_ & (O_DIRECTORY|O_PATH))
+    return fd;
+  rv = fstat(fd,&st);
+  if(rv == -1)
+    return fd;
+  if((st.st_mode & S_IFMT) != S_IFREG)
+    return fd;
+
+  IOCTL_BUF real_pathname;
+  rv = get_underlying_filepath(fd,real_pathname);
+  if(rv == -1)
+    return fd;
+
+  flags_ &= ~(O_EXCL|O_CREAT);
+  rv = _libc_open(real_pathname,flags_,mode);
+  if(rv == -1)
+    return fd;
+
+  close(fd);
+
+  return rv;
+}
+
+int
+open64(const char *pathname_,
+       int         flags_,
+       ...)
+{
+  int rv;
+  int fd;
+  mode_t mode;
+  struct stat st;
+
+  LOAD_FUNC(open64);
+
+  mode = 0;
+  if(flags_ & O_CREAT)
+    {
+      va_list args;
+      va_start(args,flags_);
+      mode = va_arg(args,mode_t);
+      va_end(args);
+    }
+
+  fd = _libc_open64(pathname_,flags_,mode);
+  if(fd == -1)
+    return -1;
+
+  if(flags_ & (O_DIRECTORY|O_PATH))
+    return fd;
+  rv = fstat(fd,&st);
+  if(rv == -1)
+    return fd;
+  if((st.st_mode & S_IFMT) != S_IFREG)
+    return fd;
+
+  IOCTL_BUF real_pathname;
+  rv = get_underlying_filepath(fd,real_pathname);
+  if(rv == -1)
+    return fd;
+
+  flags_ &= ~(O_EXCL|O_CREAT);
+  rv = _libc_open64(real_pathname,flags_,mode);
+  if(rv == -1)
+    return fd;
+
+  close(fd);
+
+  return rv;
+}
+
+int
+openat(int         dirfd_,
+       const char *pathname_,
+       int         flags_,
+       ...)
+{
+  int rv;
+  int fd;
+  mode_t mode;
+  struct stat st;
+
+  LOAD_FUNC(openat);
+
+  mode = 0;
+  if(flags_ & O_CREAT)
+    {
+      va_list args;
+      va_start(args,flags_);
+      mode = va_arg(args,mode_t);
+      va_end(args);
+    }
+
+  fd = _libc_openat(dirfd_,pathname_,flags_,mode);
+  if(fd == -1)
+    return -1;
+
+  if(flags_ & (O_DIRECTORY|O_PATH))
+    return fd;
+  rv = fstat(fd,&st);
+  if(rv == -1)
+    return fd;
+  if((st.st_mode & S_IFMT) != S_IFREG)
+    return fd;
+
+  IOCTL_BUF real_pathname;
+  rv = get_underlying_filepath(fd,real_pathname);
+  if(rv == -1)
+    return fd;
+
+  flags_ &= ~(O_EXCL|O_CREAT);
+  rv = _libc_openat(dirfd_,real_pathname,flags_,mode);
+  if(rv == -1)
+    return fd;
+
+  close(fd);
+
+  return rv;
+}
+
+int
+openat64(int         dirfd_,
+         const char *pathname_,
+         int         flags_,
+         ...)
+{
+  int rv;
+  int fd;
+  mode_t mode;
+  struct stat st;
+
+  LOAD_FUNC(openat64);
+
+  mode = 0;
+  if(flags_ & O_CREAT)
+    {
+      va_list args;
+      va_start(args,flags_);
+      mode = va_arg(args,mode_t);
+      va_end(args);
+    }
+
+  fd = _libc_openat64(dirfd_,pathname_,flags_,mode);
+  if(fd == -1)
+    return -1;
+
+  if(flags_ & (O_DIRECTORY|O_PATH))
+    return fd;
+  rv = fstat(fd,&st);
+  if(rv == -1)
+    return fd;
+  if((st.st_mode & S_IFMT) != S_IFREG)
+    return fd;
+
+  IOCTL_BUF real_pathname;
+  rv = get_underlying_filepath(fd,real_pathname);
+  if(rv == -1)
+    return fd;
+
+  flags_ &= ~(O_EXCL|O_CREAT);
+  rv = _libc_openat64(dirfd_,real_pathname,flags_,mode);
+  if(rv == -1)
+    return fd;
+
+  close(fd);
+
+  return rv;
+}
+
+FILE*
+fopen(const char *pathname_,
+      const char *mode_)
+{
+  int fd;
+  int rv;
+  FILE *f;
+  FILE *f2;
+  struct stat st;
+
+  LOAD_FUNC(fopen);
+
+  f = _libc_fopen(pathname_,mode_);
+  if(f == NULL)
+    return NULL;
+
+  fd = fileno(f);
+  if(fd == -1)
+    return f;
+
+  rv = fstat(fd,&st);
+  if(rv == -1)
+    return f;
+  if((st.st_mode & S_IFMT) != S_IFREG)
+    return f;
+
+  IOCTL_BUF real_pathname;
+  rv = get_underlying_filepath(fd,real_pathname);
+  if(rv == -1)
+    return f;
+
+  char new_mode[64];
+  strip_exec(mode_,new_mode);
+  f2 = _libc_fopen(real_pathname,new_mode);
+  if(f2 == NULL)
+    return f;
+
+  fclose(f);
+
+  return f2;
+}
+
+FILE*
+fopen64(const char *pathname_,
+        const char *mode_)
+{
+  int fd;
+  int rv;
+  FILE *f;
+  FILE *f2;
+  struct stat st;
+
+  LOAD_FUNC(fopen64);
+
+  f = _libc_fopen64(pathname_,mode_);
+  if(f == NULL)
+    return NULL;
+
+  fd = fileno(f);
+  if(fd == -1)
+    return f;
+
+  rv = fstat(fd,&st);
+  if(rv == -1)
+    return f;
+  if((st.st_mode & S_IFMT) != S_IFREG)
+    return f;
+
+  IOCTL_BUF real_pathname;
+  rv = get_underlying_filepath(fd,real_pathname);
+  if(rv == -1)
+    return f;
+
+  char new_mode[64];
+  strip_exec(mode_,new_mode);
+  f2 = _libc_fopen64(real_pathname,new_mode);
+  if(f2 == NULL)
+    return f;
+
+  fclose(f);
+
+  return f2;
+}
+
+int
+creat(const char *pathname_,
+      mode_t      mode_)
+{
+  int fd;
+  int rv;
+
+  LOAD_FUNC(creat);
+
+  fd = _libc_creat(pathname_,mode_);
+  if(fd == -1)
+    return -1;
+
+  IOCTL_BUF real_pathname;
+  rv = get_underlying_filepath(fd,real_pathname);
+  if(rv == -1)
+    return fd;
+
+  rv = _libc_creat(real_pathname,mode_);
+  if(rv == -1)
+    return fd;
+
+  close(fd);
+
+  return rv;
+}
+
+int
+creat64(const char *pathname_,
+        mode_t      mode_)
+{
+  int fd;
+  int rv;
+
+  LOAD_FUNC(creat64);
+
+  fd = _libc_creat64(pathname_,mode_);
+  if(fd == -1)
+    return -1;
+
+  IOCTL_BUF real_pathname;
+  rv = get_underlying_filepath(fd,real_pathname);
+  if(rv == -1)
+    return fd;
+
+  rv = _libc_creat64(real_pathname,mode_);
+  if(rv == -1)
+    return fd;
+
+  close(fd);
+
+  return rv;
+}