checkpoint

libfuse/Makefile

@@ -22,11 +22,9 @@ INSTALLMAN1DIR = $(DESTDIR)$(MAN1DIR)
 
 SRC   = \
 	lib/buffer.c \
-	lib/cuse_lowlevel.c \
-	lib/fuse_dirents.c \
 	lib/fuse.c \
-	lib/fuse_kern_chan.c \
-	lib/fuse_loop.c \
+	lib/fuse_chan.c \
+	lib/fuse_dirents.c \
 	lib/fuse_loop_mt.c \
 	lib/fuse_lowlevel.c \
 	lib/fuse_mt.c \
@@ -34,7 +32,8 @@ SRC   = \
 	lib/fuse_session.c \
 	lib/fuse_signals.c \
 	lib/helper.c \
-	lib/mount.c
+	lib/mount.c \
+	lib/sys.c
 OBJS = $(SRC:lib/%.c=build/%.o)
 DEPS = $(SRC:lib/%.c=build/%.d)
 

libfuse/NEWS

@@ -1,303 +0,0 @@
-What is new in 2.9
-
- - Add "zero copy" support for kernel 2.6.35 or newer
-
- - Make maximum background requests tunable on kernel 2.6.32 or newer
-
- - Require --no-canonicalize in (u)mount (util-linux version 2.18 or
-   newer) to fix security problems with fusermount
-
- - Use dynamically sized hash tables in high level library
-
- - Memory use of filesystem daemon can shrink more easily
-
- - Add "auto_unmount" option
-
- - Add "remember" option
-
- - Add man pages for fusermount, mount.fuse and ulockmgr_server
-
- - API changes:
-
-    o Introduce "store" and "retrieve" for accessing kernel buffers on
-      kernel 2.6.36 or newer
-
-    o Introduce abstract buffer for zero copy operations
-
-    o Allow path calculation to be omitted on certain operations
-
-    o Allow batching forget requests
-
-    o Add "flock" method
-
-    o Add support for ioctl on directories
-
-    o Add delete notification
-
-    o Add fallocate operation (linux kernel 3.5 or newer)
-
- - Bug fixes and small improvements
-
-============================================================================
-
-What is new in 2.8
-
- - More scalable directory tree locking
-
- - Atomic open(O_TRUNC) support
-
- - Support big write requests on kernels 2.6.26 and newer
-
- - Out-of-tree fuse module removed
-
- - Better NFS exporting support
-
- - New ioctl and poll requests
-
- - New CUSE (Character Device in Userspace) interface
-
- - Allow umask processing in userspace
-
- - Added cache invalidation notifications
-
- - Bugfixes and small improvements
-
-============================================================================
-
-What is new in 2.7
-
- - Stacking support for the high level API
-
- - Add filename charset conversion module
-
- - Improved mounting
-
-============================================================================
-
-What is new in 2.6
-
- - Improved read characteristics (asynchronous reads)
-
- - Support for aborting filesystem connection
-
- - POSIX file locking support
-
- - Request interruption support
-
- - Building module for Linux kernels earlier than 2.6.9 not supported
-
- - Allow block device based filesystems to support swap files
-
- - Several bugs fixed, including a rare system hang on SMP
-
-============================================================================
-
-What is new in 2.5
-
- - Merge library part of FreeBSD port
-
- - New atomic create+open, access and ftruncate operations
-
- - On filesystems implementing the new create+open operation, and
-   running on Linux kernels 2.6.15 or later, the 'cp' operation will
-   work correctly when copying read-only files.
-
- - New option parsing interface added to the library
-
- - Lots of minor improvements and fixes
-
-============================================================================
-
-What is new in 2.4
-
- - Simplify device opening.  Now '/dev/fuse' is a requirement
-
- - Allow module auto-loading if user has access to '/dev/fuse'
-
- - Allow mounting over a regular file for unprivileged users
-
- - Allow mounting of arbitrary FUSE filesystems from /etc/fstab
-
- - New mount options: 'umask=M', 'uid=N', 'gid=N'
-
- - Check for non-empty mountpoint, and refuse mount by default.  New
-   mount option: 'nonempty'
-
- - Low level (inode based) API added
-
- - Allow 'direct_io' and 'keep_cache' options to be set on a
-   case-by-case basis on open.
-
- - Add 'attr_timeout' and 'entry_timeout' mount options to the
-   high-level library.  Until now these timeouts were fixed at 1 sec.
-
- - Some bugfixes
-
-============================================================================
-
-What is new in 2.3
-
- - Add new directory related operations: opendir(), readdir(),
-   releasedir() and fsyncdir()
-
- - Add init() and destroy() operations which are called before the
-   event loop is started and after it has exited
-
- - Update kernel ABI so that on dual architectures (e.g. AMD64) 32bit
-   binaries work under a 64bit kernel
-
- - Bugfixes
-
-============================================================================
-
-What is new in 2.2
-
-Userspace changes:
-
- - Add fuse_file_info structure to file operations, this allows the
-   filesystem to return a file handle in open() which is passed to
-   read(), write(), flush(), fsync() and release().
-
- - Add source compatibility with 2.1 and 1.4 releases
-
- - Binary compatibility with 2.1 release is retained
-
-Kernel changes:
-
- - Make requests interruptible.  This prevents the filesystem to go
-   into an unbreakable deadlock with itself.
-
- - Make readpages() synchronous.  Asynchronous requests are deadlock
-   prone, since they cannot be interrupted (see above)
-
- - Remove shared-writeable mapping support, which could deadlock the
-   machine
-
- - Remove INVALIDATE userspace initiated request
-
- - Update ABI to be independent of sizeof(long), so dual-size archs
-   don't cause problems
-
- - Remove /sys/fs/fuse/version.  Version checking is now done through
-   the fuse device
-
- - Replace directory reading method on the kernel interface.  Instead
-   of passing an open file descriptor to the kernel, send data through
-   the FUSE device, like all other operations.
-
-============================================================================
-
-What is new in 2.1
-
-* Bug fixes
-
-* Improved support for filesystems implementing a custom event-loop
-
-* Add 'pkg-config' support
-
-* Kernel module can be compiled separately
-
-============================================================================
-
-What is new in 1.9
-
-* Lots of bugs fixed
-
-* Minor modifications to the library API
-
-* Improvements to the kernel/userspace interface
-
-* Mounting by non-root made more secure
-
-* Build shared library in addition to the static one
-
-* Consolidated mount options
-
-* Optimized reading under 2.6 kernels
-
-* Direct I/O support
-
-* Support file I/O on deleted files
-
-* Extended attributes support
-
-============================================================================
-
-What is new in 1.3
-
-* Thanks to user bugreports and stress testing with LTP and sfx-linux
-a number of bugs were fixed, some quite serious.
-
-* Fix compile problems with recent SuSE kernles
-
-============================================================================
-
-What is new in 1.2
-
-* Fix mount problems on recent 2.6 kernels with SELinux enabled
-
-* Fixed writing files lager than 2GBytes
-
-* Other bugfixes
-
-============================================================================
-
-What is new in 1.1
-
-* Support for the 2.6 kernels
-
-* Support for exporting filesystem over NFS in 2.6 kernels
-
-* Read efficiency improvements: read in 64k blocks instead of 4k
-(Michael Grigoriev).  Can be turned on with '-l' option of fusermount
-
-* Lazy automatic unmount
-
-* Added 'fsync()' VFS call to the FUSE interface
-
-* Bugfixes
-
-============================================================================
-
-What is new in 1.0
-
-* Cleanups and bugfixes
-
-* Added 'release()' VFS call to the FUSE interface
-
-* 64 bit file offsets (handling of > 4 GByte files)
-
-* libfuse is now under LGPL
-
-* New 'statfs' call (Mark Glines)
-
-* Cleaned up mount procedure (mostly by Mark Glines)
-
-  NOTE: Binaries linked with with a previous version of libavfs may
-  not work with the new version of the fusermount program.  In such
-  case recompile the program after installing the new libavfs library.
-
-* Fix for problems under linux kernel 2.4.19
-
-============================================================================
-
-What is new in 0.95
-
-* Optimized read/write operations.  Raw throughput has increased to
-about 60Mbyte/s on a Celeron/360
-
-* Python bindings by Jeff Epler
-
-* Perl bindings by Mark Glines
-
-* Improved multithreaded operation
-
-* Simplified library interface
-
-* Bugfixes
-
-============================================================================
-
-What is new in 0.9:
-
-* Everything

libfuse/README.NFS

@@ -1,33 +0,0 @@
-NFS exporting is supported in Linux kernels 2.6.27 or later.
-
-You need to add an fsid=NNN option to /etc/exports to make exporting a
-FUSE directory work.
-
-Filesystem support
-------------------
-
-NFS exporting works to some extent on all fuse filesystems, but not
-perfectly.  This is due to the stateless nature of the protocol, the
-server has no way of knowing whether the client is keeping a reference
-to a file or not, and hence that file may be removed from the server's
-cache.  In that case there has to be a way to look up that object
-using the inode number, otherwise an ESTALE error will be returned.
-
-1) low-level interface
-
-Filesystems need to implement special lookups for the names "." and
-"..".  The former may be requested on any inode, including
-non-directories, while the latter is only requested for directories.
-Otherwise these special lookups should behave identically to ordinary
-lookups.
-
-2) high-level interface
-
-Because the high-level interface is path based, it is not possible to
-delegate looking up by inode to the filesystem.
-
-To work around this, currently a "noforget" option is provided, which
-makes the library remember nodes forever.  This will make the NFS
-server happy, but also results in an ever growing memory footprint for
-the filesystem.  For this reason if the filesystem is large (or the
-memory is small), then this option is not recommended.

libfuse/README.md

@@ -1,108 +0,0 @@
-libfuse
-=======
-
-Warning: unresolved security issue
-----------------------------------
-
-Be aware that FUSE has an unresolved security bug
-([bug #15](https://github.com/libfuse/libfuse/issues/15)): the
-permission check for accessing a cached directory is only done once
-when the directory entry is first loaded into the cache. Subsequent
-accesses will re-use the results of the first check, even if the
-directory permissions have since changed, and even if the subsequent
-access is made by a different user.
-
-This bug needs to be fixed in the Linux kernel and has been known
-since 2006 but unfortunately no fix has been applied yet. If you
-depend on correct permission handling for FUSE file systems, the only
-workaround is to completely disable caching of directory
-entries. Alternatively, the severity of the bug can be somewhat
-reduced by not using the `allow_other` mount option.
-
-
-About
------
-
-FUSE (Filesystem in Userspace) is an interface for userspace programs
-to export a filesystem to the Linux kernel. The FUSE project consists
-of two components: the *fuse* kernel module (maintained in the regular
-kernel repositories) and the *libfuse* userspace library (maintained
-in this repository). libfuse provides the reference implementation
-for communicating with the FUSE kernel module.
-
-A FUSE file system is typically implemented as a standalone
-application that links with libfuse. libfuse provides functions to
-mount the file system, unmount it, read requests from the kernel, and
-send responses back. libfuse offers two APIs: a "high-level",
-synchronous API, and a "low-level" asynchronous API. In both cases,
-incoming requests from the kernel are passed to the main program using
-callbacks. When using the high-level API, the callbacks may work with
-file names and paths instead of inodes, and processing of a request
-finishes when the callback function returns. When using the low-level
-API, the callbacks must work with inodes and responses must be sent
-explicitly using a separate set of API functions.
-
-
-Installation
-------------
-
-    ./configure
-    make -j8
-    make install
-
-You may also need to add `/usr/local/lib` to `/etc/ld.so.conf` and/or
-run *ldconfig*. If you're building from the git repository (instead of
-using a release tarball), you also need to run `./makeconf.sh` to
-create the `configure` script.
-
-You'll also need a fuse kernel module (Linux kernels 2.6.14 or later
-contain FUSE support).
-
-For more details see the file `INSTALL`
-
-Security implications
----------------------
-
-If you run `make install`, the *fusermount* program is installed
-set-user-id to root.  This is done to allow normal users to mount
-their own filesystem implementations.
-
-There must however be some limitations, in order to prevent Bad User from
-doing nasty things.  Currently those limitations are:
-
-  - The user can only mount on a mountpoint, for which it has write
-    permission
-
-  - The mountpoint is not a sticky directory which isn't owned by the
-    user (like /tmp usually is)
-
-  - No other user (including root) can access the contents of the
-    mounted filesystem (though this can be relaxed by allowing the use
-    of the `allow_other` and `allow_root` mount options in `fuse.conf`)
-
-
-Building your own filesystem
-------------------------------
-
-FUSE comes with several example file systems in the `examples`
-directory. For example, the *fusexmp* example mirrors the contents of
-the root directory under the mountpoint. Start from there and adapt
-the code!
-
-The documentation of the API functions and necessary callbacks is
-mostly contained in the files `include/fuse.h` (for the high-level
-API) and `include/fuse_lowlevel.h` (for the low-level API). An
-autogenerated html version of the API is available in the `doc/html`
-directory and at http://libfuse.github.io/doxygen.
-
-
-Getting Help
-------------
-
-If you need help, please ask on the <fuse-devel@lists.sourceforge.net>
-mailing list (subscribe at
-https://lists.sourceforge.net/lists/listinfo/fuse-devel).
-
-Please report any bugs on the GitHub issue tracker at
-https://github.com/libfuse/main/issues.
-

libfuse/fuse.pc.in

@@ -1,11 +0,0 @@
-prefix=@prefix@
-exec_prefix=@exec_prefix@
-libdir=@libdir@
-includedir=@includedir@
-
-Name: fuse
-Description: Filesystem in Userspace
-Version: @VERSION@
-Libs: -L${libdir} -lfuse -pthread
-Libs.private: @libfuse_libs@
-Cflags: -I${includedir}/fuse -D_FILE_OFFSET_BITS=64

libfuse/include/Makefile.am

@@ -1,17 +0,0 @@
-## Process this file with automake to produce Makefile.in
-
-fuseincludedir=$(includedir)/fuse
-
-fuseinclude_HEADERS = \
-	fuse.h			\
-	fuse_compat.h		\
-	fuse_common.h		\
-	fuse_common_compat.h    \
-	fuse_lowlevel.h		\
-	fuse_lowlevel_compat.h	\
-	fuse_opt.h		\
-	cuse_lowlevel.h
-
-include_HEADERS = old/fuse.h ulockmgr.h
-
-noinst_HEADERS = fuse_kernel.h

libfuse/include/cuse_lowlevel.h

@@ -1,87 +0,0 @@
-/*
-  CUSE: Character device in Userspace
-  Copyright (C) 2008-2009  SUSE Linux Products GmbH
-  Copyright (C) 2008-2009  Tejun Heo <tj@kernel.org>
-
-  This program can be distributed under the terms of the GNU LGPLv2.
-  See the file COPYING.LIB.
-
-  Read example/cusexmp.c for usages.
-*/
-
-#ifndef _CUSE_LOWLEVEL_H_
-#define _CUSE_LOWLEVEL_H_
-
-#ifndef FUSE_USE_VERSION
-#define FUSE_USE_VERSION 29
-#endif
-
-#include "fuse_lowlevel.h"
-
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define CUSE_UNRESTRICTED_IOCTL		(1 << 0) /* use unrestricted ioctl */
-
-struct fuse_session;
-
-struct cuse_info {
-	unsigned	dev_major;
-	unsigned	dev_minor;
-	unsigned	dev_info_argc;
-	const char	**dev_info_argv;
-	unsigned	flags;
-};
-
-/*
- * Most ops behave almost identically to the matching fuse_lowlevel
- * ops except that they don't take @ino.
- *
- * init_done	: called after initialization is complete
- * read/write	: always direct IO, simultaneous operations allowed
- * ioctl	: might be in unrestricted mode depending on ci->flags
- */
-struct cuse_lowlevel_ops {
-	void (*init) (void *userdata, struct fuse_conn_info *conn);
-	void (*init_done) (void *userdata);
-	void (*destroy) (void *userdata);
-	void (*open) (fuse_req_t req, struct fuse_file_info *fi);
-	void (*read) (fuse_req_t req, size_t size, off_t off,
-		      struct fuse_file_info *fi);
-	void (*write) (fuse_req_t req, const char *buf, size_t size, off_t off,
-		       struct fuse_file_info *fi);
-	void (*flush) (fuse_req_t req, struct fuse_file_info *fi);
-	void (*release) (fuse_req_t req, struct fuse_file_info *fi);
-	void (*fsync) (fuse_req_t req, int datasync, struct fuse_file_info *fi);
-	void (*ioctl) (fuse_req_t req, int cmd, void *arg,
-		       struct fuse_file_info *fi, unsigned int flags,
-		       const void *in_buf, size_t in_bufsz, size_t out_bufsz);
-	void (*poll) (fuse_req_t req, struct fuse_file_info *fi,
-		      struct fuse_pollhandle *ph);
-};
-
-struct fuse_session *cuse_lowlevel_new(struct fuse_args *args,
-				       const struct cuse_info *ci,
-				       const struct cuse_lowlevel_ops *clop,
-				       void *userdata);
-
-struct fuse_session *cuse_lowlevel_setup(int argc, char *argv[],
-					 const struct cuse_info *ci,
-					 const struct cuse_lowlevel_ops *clop,
-					 int *multithreaded, void *userdata);
-
-void cuse_lowlevel_teardown(struct fuse_session *se);
-
-int cuse_lowlevel_main(int argc, char *argv[], const struct cuse_info *ci,
-		       const struct cuse_lowlevel_ops *clop, void *userdata);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _CUSE_LOWLEVEL_H_ */

libfuse/include/fuse.h

@@ -9,20 +9,6 @@
 #ifndef _FUSE_H_
 #define _FUSE_H_
 
-/** @file
- *
- * This file defines the library interface of FUSE
- *
- * IMPORTANT: you should define FUSE_USE_VERSION before including this
- * header.  To use the newest API define it to 26 (recommended for any
- * new application), to use the old API define it to 21 (default) 22
- * or 25, to use the even older 1.X API define it to 11.
- */
-
-#ifndef FUSE_USE_VERSION
-#define FUSE_USE_VERSION 21
-#endif
-
 #include "fuse_common.h"
 #include "fuse_dirents.h"
 
@@ -668,12 +654,11 @@ struct fuse_context {
  * @param user_data user data supplied in the context during the init() method
  * @return 0 on success, nonzero on failure
  */
-/*
-  int fuse_main(int argc, char *argv[], const struct fuse_operations *op,
-  void *user_data);
-*/
-#define fuse_main(argc, argv, op, user_data)				\
-	fuse_main_real(argc, argv, op, sizeof(*(op)), user_data)
+
+int fuse_main(int argc,
+              char *argv[],
+              const struct fuse_operations *op,
+              void *user_data);
 
 /* ----------------------------------------------------------- *
  * More detailed API					       *
@@ -689,7 +674,7 @@ struct fuse_context {
  * @param user_data user data supplied in the context during the init() method
  * @return the created FUSE handle
  */
-struct fuse *fuse_new(struct fuse_chan *ch, struct fuse_args *args,
+struct fuse *fuse_new(int devfuse_fd, struct fuse_args *args,
 		      const struct fuse_operations *op, size_t op_size,
 		      void *user_data);
 
@@ -705,17 +690,6 @@ struct fuse *fuse_new(struct fuse_chan *ch, struct fuse_args *args,
  */
 void fuse_destroy(struct fuse *f);
 
-/**
- * FUSE event loop.
- *
- * Requests from the kernel are processed, and the appropriate
- * operations are called.
- *
- * @param f the FUSE handle
- * @return 0 if no error occurred, -1 otherwise
- */
-int fuse_loop(struct fuse *f);
-
 /**
  * Exit from event loop
  *
@@ -760,26 +734,6 @@ int fuse_loop_mt(struct fuse *f);
  */
 struct fuse_context *fuse_get_context(void);
 
-/**
- * Get the current supplementary group IDs for the current request
- *
- * Similar to the getgroups(2) system call, except the return value is
- * always the total number of group IDs, even if it is larger than the
- * specified size.
- *
- * The current fuse kernel module in linux (as of 2.6.30) doesn't pass
- * the group list to userspace, hence this function needs to parse
- * "/proc/$TID/task/$TID/status" to get the group IDs.
- *
- * This feature may not be supported on all operating systems.  In
- * such a case this function will return -ENOSYS.
- *
- * @param size size of given array
- * @param list array of group IDs to be filled in
- * @return the total number of supplementary group IDs or -errno on failure
- */
-int fuse_getgroups(int size, gid_t list[]);
-
 /**
  * Check if the current request has already been interrupted
  *
@@ -787,16 +741,6 @@ int fuse_getgroups(int size, gid_t list[]);
  */
 int fuse_interrupted(void);
 
-/**
- * Obsolete, doesn't do anything
- *
- * @return -EINVAL
- */
-int fuse_invalidate(struct fuse *f, const char *path);
-
-/* Deprecated, don't use */
-int fuse_is_lib_option(const char *opt);
-
 /**
  * The real main function
  *
@@ -1030,18 +974,12 @@ typedef void (*fuse_processor_t)(struct fuse *, struct fuse_cmd *, void *);
 /** This is the part of fuse_main() before the event loop */
 struct fuse *fuse_setup(int argc, char *argv[],
 			const struct fuse_operations *op, size_t op_size,
-			char **mountpoint, int *multithreaded,
+			char **mountpoint,
 			void *user_data);
 
 /** This is the part of fuse_main() after the event loop */
 void fuse_teardown(struct fuse *fuse, char *mountpoint);
 
-/** Read a single command.  If none are read, return NULL */
-struct fuse_cmd *fuse_read_cmd(struct fuse *f);
-
-/** Process a single command */
-void fuse_process_cmd(struct fuse *f, struct fuse_cmd *cmd);
-
 /** Multi threaded event loop, which calls the custom command
     processor function */
 int fuse_loop_mt_proc(struct fuse *f, fuse_processor_t proc, void *data);
@@ -1056,53 +994,6 @@ void fuse_set_getcontext_func(struct fuse_context *(*func)(void));
 /** Get session from fuse object */
 struct fuse_session *fuse_get_session(struct fuse *f);
 
-/* ----------------------------------------------------------- *
- * Compatibility stuff					       *
- * ----------------------------------------------------------- */
-
-#if FUSE_USE_VERSION < 26
-#  include "fuse_compat.h"
-#  undef fuse_main
-#  if FUSE_USE_VERSION == 25
-#    define fuse_main(argc, argv, op)				\
-	fuse_main_real_compat25(argc, argv, op, sizeof(*(op)))
-#    define fuse_new fuse_new_compat25
-#    define fuse_setup fuse_setup_compat25
-#    define fuse_teardown fuse_teardown_compat22
-#    define fuse_operations fuse_operations_compat25
-#  elif FUSE_USE_VERSION == 22
-#    define fuse_main(argc, argv, op)				\
-	fuse_main_real_compat22(argc, argv, op, sizeof(*(op)))
-#    define fuse_new fuse_new_compat22
-#    define fuse_setup fuse_setup_compat22
-#    define fuse_teardown fuse_teardown_compat22
-#    define fuse_operations fuse_operations_compat22
-#    define fuse_file_info fuse_file_info_compat
-#  elif FUSE_USE_VERSION == 24
-#    error Compatibility with high-level API version 24 not supported
-#  else
-#    define fuse_dirfil_t fuse_dirfil_t_compat
-#    define __fuse_read_cmd fuse_read_cmd
-#    define __fuse_process_cmd fuse_process_cmd
-#    define __fuse_loop_mt fuse_loop_mt_proc
-#    if FUSE_USE_VERSION == 21
-#      define fuse_operations fuse_operations_compat2
-#      define fuse_main fuse_main_compat2
-#      define fuse_new fuse_new_compat2
-#      define __fuse_setup fuse_setup_compat2
-#      define __fuse_teardown fuse_teardown_compat22
-#      define __fuse_exited fuse_exited
-#      define __fuse_set_getcontext_func fuse_set_getcontext_func
-#    else
-#      define fuse_statfs fuse_statfs_compat1
-#      define fuse_operations fuse_operations_compat1
-#      define fuse_main fuse_main_compat1
-#      define fuse_new fuse_new_compat1
-#      define FUSE_DEBUG FUSE_DEBUG_COMPAT1
-#    endif
-#  endif
-#endif
-
 #ifdef __cplusplus
 }
 #endif

libfuse/include/fuse_chan.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <stdint.h>
+#include <sys/uio.h>
+
+#define FUSE_CHAN_SPLICE_READ  (1<<0)
+#define FUSE_CHAN_SPLICE_WRITE (1<<1)
+
+typedef struct fuse_chan_t fuse_chan_t;
+struct fuse_chan_t
+{
+  void     *buf;
+  uint64_t  bufsize;
+  int32_t   fd;
+  int32_t   splice_pipe[2];
+  uint32_t  flags;
+};
+
+fuse_chan_t *fuse_chan_new(int32_t fd, uint32_t flags);
+void         fuse_chan_destroy(fuse_chan_t *ch);
+int64_t      fuse_chan_recv(fuse_chan_t *ch, char *buf, uint64_t size);
+int64_t      fuse_chan_send(fuse_chan_t *ch, const struct iovec iov[], uint64_t count);
+

libfuse/include/fuse_common.h

@@ -33,8 +33,8 @@
 #error Please add -D_FILE_OFFSET_BITS=64 to your compile flags!
 #endif
 
-#define FUSE_DEFAULT_MAX_PAGES_PER_REQ 32
-#define FUSE_MAX_MAX_PAGES 256
+#define FUSE_MSG_DEFAULT_PAGES 32
+#define FUSE_MSG_MAX_PAGES 256
 
 #ifdef __cplusplus
 extern "C" {
@@ -206,7 +206,7 @@ struct fuse_conn_info {
 };
 
 struct fuse_session;
-struct fuse_chan;
+typedef struct fuse_chan_t fuse_chan_t;
 struct fuse_pollhandle;
 
 /**
@@ -219,8 +219,8 @@ struct fuse_pollhandle;
  * @param args argument vector
  * @return the communication channel on success, NULL on failure
  */
-struct fuse_chan *fuse_mount(const char       *mountpoint,
-                             struct fuse_args *args);
+int fuse_mount(const char       *mountpoint,
+               struct fuse_args *args);
 
 /**
  * Umount a FUSE mountpoint
@@ -228,7 +228,8 @@ struct fuse_chan *fuse_mount(const char       *mountpoint,
  * @param mountpoint the mount point path
  * @param ch the communication channel
  */
-void fuse_unmount(const char *mountpoint, struct fuse_chan *ch);
+void fuse_unmount(const char *mountpoint,
+                  int         devfuse_fd);
 
 /**
  * Parse common options
@@ -247,12 +248,12 @@ void fuse_unmount(const char *mountpoint, struct fuse_chan *ch);
  *
  * @param args argument vector
  * @param mountpoint the returned mountpoint, should be freed after use
- * @param multithreaded set to 1 unless the '-s' option is present
  * @param foreground set to 1 if one of the relevant options is present
  * @return 0 on success, -1 on failure
  */
-int fuse_parse_cmdline(struct fuse_args *args, char **mountpoint,
-		       int *multithreaded, int *foreground);
+int fuse_parse_cmdline(struct fuse_args *args,
+                       char **mountpoint,
+		       int *foreground);
 
 /**
  * Go into the background

libfuse/include/fuse_common_compat.h

@@ -9,6 +9,8 @@
 /* these definitions provide source compatibility to prior versions.
    Do not include this file directly! */
 
+#include "fuse_opt.h"
+
 struct fuse_file_info_compat {
 	int flags;
 	unsigned long fh;

libfuse/include/fuse_compat.h

@@ -1,196 +0,0 @@
-/*
-  FUSE: Filesystem in Userspace
-  Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
-
-  This program can be distributed under the terms of the GNU LGPLv2.
-  See the file COPYING.LIB.
-*/
-
-/* these definitions provide source compatibility to prior versions.
-   Do not include this file directly! */
-
-struct fuse_operations_compat25 {
-	int (*getattr) (const char *, struct stat *);
-	int (*readlink) (const char *, char *, size_t);
-	int (*mknod) (const char *, mode_t, dev_t);
-	int (*mkdir) (const char *, mode_t);
-	int (*unlink) (const char *);
-	int (*rmdir) (const char *);
-	int (*symlink) (const char *, const char *);
-	int (*rename) (const char *, const char *);
-	int (*link) (const char *, const char *);
-	int (*chmod) (const char *, mode_t);
-	int (*chown) (const char *, uid_t, gid_t);
-	int (*truncate) (const char *, off_t);
-	int (*utime) (const char *, struct utimbuf *);
-	int (*open) (const char *, struct fuse_file_info *);
-	int (*read) (const char *, char *, size_t, off_t,
-		     struct fuse_file_info *);
-	int (*write) (const char *, const char *, size_t, off_t,
-		      struct fuse_file_info *);
-	int (*statfs) (const char *, struct statvfs *);
-	int (*flush) (const char *, struct fuse_file_info *);
-	int (*release) (const char *, struct fuse_file_info *);
-	int (*fsync) (const char *, int, struct fuse_file_info *);
-	int (*setxattr) (const char *, const char *, const char *, size_t, int);
-	int (*getxattr) (const char *, const char *, char *, size_t);
-	int (*listxattr) (const char *, char *, size_t);
-	int (*removexattr) (const char *, const char *);
-	int (*opendir) (const char *, struct fuse_file_info *);
-	int (*readdir) (const char *, void *, off_t,
-			struct fuse_file_info *);
-	int (*releasedir) (const char *, struct fuse_file_info *);
-	int (*fsyncdir) (const char *, int, struct fuse_file_info *);
-	void *(*init) (void);
-	void (*destroy) (void *);
-	int (*access) (const char *, int);
-	int (*create) (const char *, mode_t, struct fuse_file_info *);
-	int (*ftruncate) (const char *, off_t, struct fuse_file_info *);
-	int (*fgetattr) (const char *, struct stat *, struct fuse_file_info *);
-};
-
-struct fuse *fuse_new_compat25(int fd, struct fuse_args *args,
-			       const struct fuse_operations_compat25 *op,
-			       size_t op_size);
-
-int fuse_main_real_compat25(int argc, char *argv[],
-			    const struct fuse_operations_compat25 *op,
-			    size_t op_size);
-
-struct fuse *fuse_setup_compat25(int argc, char *argv[],
-				 const struct fuse_operations_compat25 *op,
-				 size_t op_size, char **mountpoint,
-				 int *multithreaded, int *fd);
-
-void fuse_teardown_compat22(struct fuse *fuse, int fd, char *mountpoint);
-
-#if !defined(__FreeBSD__) && !defined(__NetBSD__)
-#include <sys/statfs.h>
-
-struct fuse_operations_compat22 {
-	int (*getattr) (const char *, struct stat *);
-	int (*readlink) (const char *, char *, size_t);
-	int (*mknod) (const char *, mode_t, dev_t);
-	int (*mkdir) (const char *, mode_t);
-	int (*unlink) (const char *);
-	int (*rmdir) (const char *);
-	int (*symlink) (const char *, const char *);
-	int (*rename) (const char *, const char *);
-	int (*link) (const char *, const char *);
-	int (*chmod) (const char *, mode_t);
-	int (*chown) (const char *, uid_t, gid_t);
-	int (*truncate) (const char *, off_t);
-	int (*utime) (const char *, struct utimbuf *);
-	int (*open) (const char *, struct fuse_file_info_compat *);
-	int (*read) (const char *, char *, size_t, off_t,
-		     struct fuse_file_info_compat *);
-	int (*write) (const char *, const char *, size_t, off_t,
-		      struct fuse_file_info_compat *);
-	int (*statfs) (const char *, struct statfs *);
-	int (*flush) (const char *, struct fuse_file_info_compat *);
-	int (*release) (const char *, struct fuse_file_info_compat *);
-	int (*fsync) (const char *, int, struct fuse_file_info_compat *);
-	int (*setxattr) (const char *, const char *, const char *, size_t, int);
-	int (*getxattr) (const char *, const char *, char *, size_t);
-	int (*listxattr) (const char *, char *, size_t);
-	int (*removexattr) (const char *, const char *);
-	int (*opendir) (const char *, struct fuse_file_info_compat *);
-	int (*readdir) (const char *, void *, off_t,
-			struct fuse_file_info_compat *);
-	int (*releasedir) (const char *, struct fuse_file_info_compat *);
-	int (*fsyncdir) (const char *, int, struct fuse_file_info_compat *);
-	void *(*init) (void);
-	void (*destroy) (void *);
-};
-
-struct fuse *fuse_new_compat22(int fd, const char *opts,
-			       const struct fuse_operations_compat22 *op,
-			       size_t op_size);
-
-struct fuse *fuse_setup_compat22(int argc, char *argv[],
-				 const struct fuse_operations_compat22 *op,
-				 size_t op_size, char **mountpoint,
-				 int *multithreaded, int *fd);
-
-int fuse_main_real_compat22(int argc, char *argv[],
-			    const struct fuse_operations_compat22 *op,
-			    size_t op_size);
-
-struct fuse_operations_compat2 {
-	int (*getattr)	   (const char *, struct stat *);
-	int (*readlink)	   (const char *, char *, size_t);
-	int (*mknod)	   (const char *, mode_t, dev_t);
-	int (*mkdir)	   (const char *, mode_t);
-	int (*unlink)	   (const char *);
-	int (*rmdir)	   (const char *);
-	int (*symlink)	   (const char *, const char *);
-	int (*rename)	   (const char *, const char *);
-	int (*link)	   (const char *, const char *);
-	int (*chmod)	   (const char *, mode_t);
-	int (*chown)	   (const char *, uid_t, gid_t);
-	int (*truncate)	   (const char *, off_t);
-	int (*utime)	   (const char *, struct utimbuf *);
-	int (*open)	   (const char *, int);
-	int (*read)	   (const char *, char *, size_t, off_t);
-	int (*write)	   (const char *, const char *, size_t, off_t);
-	int (*statfs)	   (const char *, struct statfs *);
-	int (*flush)	   (const char *);
-	int (*release)	   (const char *, int);
-	int (*fsync)	   (const char *, int);
-	int (*setxattr)	   (const char *, const char *, const char *,
-			    size_t, int);
-	int (*getxattr)	   (const char *, const char *, char *, size_t);
-	int (*listxattr)   (const char *, char *, size_t);
-	int (*removexattr) (const char *, const char *);
-};
-
-int fuse_main_compat2(int argc, char *argv[],
-		      const struct fuse_operations_compat2 *op);
-
-struct fuse *fuse_new_compat2(int fd, const char *opts,
-			      const struct fuse_operations_compat2 *op);
-
-struct fuse *fuse_setup_compat2(int argc, char *argv[],
-				const struct fuse_operations_compat2 *op,
-				char **mountpoint, int *multithreaded, int *fd);
-
-struct fuse_statfs_compat1 {
-	long block_size;
-	long blocks;
-	long blocks_free;
-	long files;
-	long files_free;
-	long namelen;
-};
-
-struct fuse_operations_compat1 {
-	int (*getattr)	(const char *, struct stat *);
-	int (*readlink) (const char *, char *, size_t);
-	int (*mknod)	(const char *, mode_t, dev_t);
-	int (*mkdir)	(const char *, mode_t);
-	int (*unlink)	(const char *);
-	int (*rmdir)	(const char *);
-	int (*symlink)	(const char *, const char *);
-	int (*rename)	(const char *, const char *);
-	int (*link)	(const char *, const char *);
-	int (*chmod)	(const char *, mode_t);
-	int (*chown)	(const char *, uid_t, gid_t);
-	int (*truncate) (const char *, off_t);
-	int (*utime)	(const char *, struct utimbuf *);
-	int (*open)	(const char *, int);
-	int (*read)	(const char *, char *, size_t, off_t);
-	int (*write)	(const char *, const char *, size_t, off_t);
-	int (*statfs)	(struct fuse_statfs_compat1 *);
-	int (*release)	(const char *, int);
-	int (*fsync)	(const char *, int);
-};
-
-#define FUSE_DEBUG_COMPAT1	 (1 << 1)
-
-struct fuse *fuse_new_compat1(int fd, int flags,
-			      const struct fuse_operations_compat1 *op);
-
-void fuse_main_compat1(int argc, char *argv[],
-		       const struct fuse_operations_compat1 *op);
-
-#endif /* __FreeBSD__ || __NetBSD__ */

libfuse/include/fuse_lowlevel_compat.h

@@ -141,15 +141,4 @@ struct fuse_session *fuse_lowlevel_new_compat(const char *opts,
 
 #endif /* __FreeBSD__ || __NetBSD__ */
 
-struct fuse_chan_ops_compat24 {
-	int (*receive)(struct fuse_chan *ch, char *buf, size_t size);
-	int (*send)(struct fuse_chan *ch, const struct iovec iov[],
-		    size_t count);
-	void (*destroy)(struct fuse_chan *ch);
-};
-
-struct fuse_chan *fuse_chan_new_compat24(struct fuse_chan_ops_compat24 *op,
-					 int fd, size_t bufsize, void *data);
-
-int fuse_chan_receive(struct fuse_chan *ch, char *buf, size_t size);
-struct fuse_chan *fuse_kern_chan_new(int fd);
+int fuse_chan_receive(fuse_chan_t *ch, char *buf, size_t size);

libfuse/lib/Makefile.am

@@ -1,42 +0,0 @@
-## Process this file with automake to produce Makefile.in
-
-AUTOMAKE_OPTIONS = subdir-objects
-AM_CPPFLAGS = -I$(top_srcdir)/include -DFUSERMOUNT_DIR=\"$(bindir)\" \
- -D_FILE_OFFSET_BITS=64 -D_REENTRANT -DFUSE_USE_VERSION=26
-
-lib_LTLIBRARIES = libfuse.la libulockmgr.la
-
-if BSD
-mount_source = mount_bsd.c
-else
-mount_source = mount.c mount_util.c mount_util.h
-endif
-
-libfuse_la_SOURCES = 		\
-	fuse.c			\
-	fuse_i.h		\
-	fuse_kern_chan.c	\
-	fuse_loop.c		\
-	fuse_loop_mt.c		\
-	fuse_lowlevel.c		\
-	fuse_misc.h		\
-	fuse_mt.c		\
-	fuse_opt.c		\
-	fuse_session.c		\
-	fuse_signals.c		\
-	buffer.c		\
-	cuse_lowlevel.c		\
-	helper.c                \
-	$(mount_source)
-
-libfuse_la_LDFLAGS = -pthread @libfuse_libs@ -version-number 2:9:7 \
-	-Wl,--version-script,$(srcdir)/fuse_versionscript
-
-if NETBSD
-libfuse_la_LIBADD = -lperfuse -lpuffs
-endif
-
-libulockmgr_la_SOURCES = ulockmgr.c
-libulockmgr_la_LDFLAGS = -pthread -version-number 1:0:1
-
-EXTRA_DIST = fuse_versionscript

libfuse/lib/buffer.c

@@ -18,140 +18,140 @@
 
 size_t fuse_buf_size(const struct fuse_bufvec *bufv)
 {
-	size_t i;
-        size_t size = 0;
+  size_t i;
+  size_t size = 0;
 
-	for (i = 0; i < bufv->count; i++) {
-		if (bufv->buf[i].size == SIZE_MAX)
-			size = SIZE_MAX;
-		else
-			size += bufv->buf[i].size;
-	}
+  for (i = 0; i < bufv->count; i++) {
+    if (bufv->buf[i].size == SIZE_MAX)
+      size = SIZE_MAX;
+    else
+      size += bufv->buf[i].size;
+  }
 
-	return size;
+  return size;
 }
 
 static size_t min_size(size_t s1, size_t s2)
 {
-	return s1 < s2 ? s1 : s2;
+  return s1 < s2 ? s1 : s2;
 }
 
 static ssize_t fuse_buf_write(const struct fuse_buf *dst, size_t dst_off,
 			      const struct fuse_buf *src, size_t src_off,
 			      size_t len)
 {
-	ssize_t res = 0;
-	size_t copied = 0;
+  ssize_t res = 0;
+  size_t copied = 0;
 
-	while (len) {
-		if (dst->flags & FUSE_BUF_FD_SEEK) {
-			res = pwrite(dst->fd, src->mem + src_off, len,
-				     dst->pos + dst_off);
-		} else {
-			res = write(dst->fd, src->mem + src_off, len);
-		}
-		if (res == -1) {
-			if (!copied)
-				return -errno;
-			break;
-		}
-		if (res == 0)
-			break;
+  while (len) {
+    if (dst->flags & FUSE_BUF_FD_SEEK) {
+      res = pwrite(dst->fd, src->mem + src_off, len,
+                   dst->pos + dst_off);
+    } else {
+      res = write(dst->fd, src->mem + src_off, len);
+    }
+    if (res == -1) {
+      if (!copied)
+        return -errno;
+      break;
+    }
+    if (res == 0)
+      break;
 
-		copied += res;
-		if (!(dst->flags & FUSE_BUF_FD_RETRY))
-			break;
+    copied += res;
+    if (!(dst->flags & FUSE_BUF_FD_RETRY))
+      break;
 
-		src_off += res;
-		dst_off += res;
-		len -= res;
-	}
+    src_off += res;
+    dst_off += res;
+    len -= res;
+  }
 
-	return copied;
+  return copied;
 }
 
 static ssize_t fuse_buf_read(const struct fuse_buf *dst, size_t dst_off,
 			     const struct fuse_buf *src, size_t src_off,
 			     size_t len)
 {
-	ssize_t res = 0;
-	size_t copied = 0;
+  ssize_t res = 0;
+  size_t copied = 0;
 
-	while (len) {
-		if (src->flags & FUSE_BUF_FD_SEEK) {
-			res = pread(src->fd, dst->mem + dst_off, len,
-				     src->pos + src_off);
-		} else {
-			res = read(src->fd, dst->mem + dst_off, len);
-		}
-		if (res == -1) {
-			if (!copied)
-				return -errno;
-			break;
-		}
-		if (res == 0)
-			break;
+  while (len) {
+    if (src->flags & FUSE_BUF_FD_SEEK) {
+      res = pread(src->fd, dst->mem + dst_off, len,
+                  src->pos + src_off);
+    } else {
+      res = read(src->fd, dst->mem + dst_off, len);
+    }
+    if (res == -1) {
+      if (!copied)
+        return -errno;
+      break;
+    }
+    if (res == 0)
+      break;
 
-		copied += res;
-		if (!(src->flags & FUSE_BUF_FD_RETRY))
-			break;
+    copied += res;
+    if (!(src->flags & FUSE_BUF_FD_RETRY))
+      break;
 
-		dst_off += res;
-		src_off += res;
-		len -= res;
-	}
+    dst_off += res;
+    src_off += res;
+    len -= res;
+  }
 
-	return copied;
+  return copied;
 }
 
 static ssize_t fuse_buf_fd_to_fd(const struct fuse_buf *dst, size_t dst_off,
 				 const struct fuse_buf *src, size_t src_off,
 				 size_t len)
 {
-	char buf[4096];
-	struct fuse_buf tmp = {
-		.size = sizeof(buf),
-		.flags = 0,
-	};
-	ssize_t res;
-	size_t copied = 0;
+  char buf[4096];
+  struct fuse_buf tmp = {
+    .size = sizeof(buf),
+    .flags = 0,
+  };
+  ssize_t res;
+  size_t copied = 0;
 
-	tmp.mem = buf;
+  tmp.mem = buf;
 
-	while (len) {
-		size_t this_len = min_size(tmp.size, len);
-		size_t read_len;
+  while (len) {
+    size_t this_len = min_size(tmp.size, len);
+    size_t read_len;
 
-		res = fuse_buf_read(&tmp, 0, src, src_off, this_len);
-		if (res < 0) {
-			if (!copied)
-				return res;
-			break;
-		}
-		if (res == 0)
-			break;
+    res = fuse_buf_read(&tmp, 0, src, src_off, this_len);
+    if (res < 0) {
+      if (!copied)
+        return res;
+      break;
+    }
+    if (res == 0)
+      break;
 
-		read_len = res;
-		res = fuse_buf_write(dst, dst_off, &tmp, 0, read_len);
-		if (res < 0) {
-			if (!copied)
-				return res;
-			break;
-		}
-		if (res == 0)
-			break;
+    read_len = res;
+    res = fuse_buf_write(dst, dst_off, &tmp, 0, read_len);
+    if (res < 0) {
+      if (!copied)
+        return res;
+      break;
+    }
+    if (res == 0)
+      break;
 
-		copied += res;
+    copied += res;
 
-		if (res < this_len)
-			break;
+    if (res < this_len)
+      break;
 
-		dst_off += res;
-		src_off += res;
-		len -= res;
-	}
+    dst_off += res;
+    src_off += res;
+    len -= res;
+  }
 
-	return copied;
+  return copied;
 }
 
 #ifdef HAVE_SPLICE
@@ -159,64 +159,64 @@ static ssize_t fuse_buf_splice(const struct fuse_buf *dst, size_t dst_off,
 			       const struct fuse_buf *src, size_t src_off,
 			       size_t len, enum fuse_buf_copy_flags flags)
 {
-	int splice_flags = 0;
-	off_t *srcpos = NULL;
-	off_t *dstpos = NULL;
-	off_t srcpos_val;
-	off_t dstpos_val;
-	ssize_t res;
-	size_t copied = 0;
+  int splice_flags = 0;
+  off_t *srcpos = NULL;
+  off_t *dstpos = NULL;
+  off_t srcpos_val;
+  off_t dstpos_val;
+  ssize_t res;
+  size_t copied = 0;
 
-	if (flags & FUSE_BUF_SPLICE_MOVE)
-		splice_flags |= SPLICE_F_MOVE;
-	if (flags & FUSE_BUF_SPLICE_NONBLOCK)
-		splice_flags |= SPLICE_F_NONBLOCK;
+  if (flags & FUSE_BUF_SPLICE_MOVE)
+    splice_flags |= SPLICE_F_MOVE;
+  if (flags & FUSE_BUF_SPLICE_NONBLOCK)
+    splice_flags |= SPLICE_F_NONBLOCK;
 
-	if (src->flags & FUSE_BUF_FD_SEEK) {
-		srcpos_val = src->pos + src_off;
-		srcpos = &srcpos_val;
-	}
-	if (dst->flags & FUSE_BUF_FD_SEEK) {
-		dstpos_val = dst->pos + dst_off;
-		dstpos = &dstpos_val;
-	}
+  if (src->flags & FUSE_BUF_FD_SEEK) {
+    srcpos_val = src->pos + src_off;
+    srcpos = &srcpos_val;
+  }
+  if (dst->flags & FUSE_BUF_FD_SEEK) {
+    dstpos_val = dst->pos + dst_off;
+    dstpos = &dstpos_val;
+  }
 
-	while (len) {
-		res = splice(src->fd, srcpos, dst->fd, dstpos, len,
-			     splice_flags);
-		if (res == -1) {
-			if (copied)
-				break;
+  while (len) {
+    res = splice(src->fd, srcpos, dst->fd, dstpos, len,
+                 splice_flags);
+    if (res == -1) {
+      if (copied)
+        break;
 
-			if (errno != EINVAL || (flags & FUSE_BUF_FORCE_SPLICE))
-				return -errno;
+      if (errno != EINVAL || (flags & FUSE_BUF_FORCE_SPLICE))
+        return -errno;
 
-			/* Maybe splice is not supported for this combination */
-			return fuse_buf_fd_to_fd(dst, dst_off, src, src_off,
-						 len);
-		}
-		if (res == 0)
-			break;
+      /* Maybe splice is not supported for this combination */
+      return fuse_buf_fd_to_fd(dst, dst_off, src, src_off,
+                               len);
+    }
+    if (res == 0)
+      break;
 
-		copied += res;
-		if (!(src->flags & FUSE_BUF_FD_RETRY) &&
-		    !(dst->flags & FUSE_BUF_FD_RETRY)) {
-			break;
-		}
+    copied += res;
+    if (!(src->flags & FUSE_BUF_FD_RETRY) &&
+        !(dst->flags & FUSE_BUF_FD_RETRY)) {
+      break;
+    }
 
-		len -= res;
-	}
+    len -= res;
+  }
 
-	return copied;
+  return copied;
 }
 #else
 static ssize_t fuse_buf_splice(const struct fuse_buf *dst, size_t dst_off,
 			       const struct fuse_buf *src, size_t src_off,
 			       size_t len, enum fuse_buf_copy_flags flags)
 {
-	(void) flags;
+  (void) flags;
 
-	return fuse_buf_fd_to_fd(dst, dst_off, src, src_off, len);
+  return fuse_buf_fd_to_fd(dst, dst_off, src, src_off, len);
 }
 #endif
 
@@ -225,94 +225,94 @@ static ssize_t fuse_buf_copy_one(const struct fuse_buf *dst, size_t dst_off,
 				 const struct fuse_buf *src, size_t src_off,
 				 size_t len, enum fuse_buf_copy_flags flags)
 {
-	int src_is_fd = src->flags & FUSE_BUF_IS_FD;
-	int dst_is_fd = dst->flags & FUSE_BUF_IS_FD;
+  int src_is_fd = src->flags & FUSE_BUF_IS_FD;
+  int dst_is_fd = dst->flags & FUSE_BUF_IS_FD;
 
-	if (!src_is_fd && !dst_is_fd) {
-		char *dstmem = dst->mem + dst_off;
-		char *srcmem = src->mem + src_off;
+  if (!src_is_fd && !dst_is_fd) {
+    char *dstmem = dst->mem + dst_off;
+    char *srcmem = src->mem + src_off;
 
-		if (dstmem != srcmem) {
-			if (dstmem + len <= srcmem || srcmem + len <= dstmem)
-				memcpy(dstmem, srcmem, len);
-			else
-				memmove(dstmem, srcmem, len);
-		}
+    if (dstmem != srcmem) {
+      if (dstmem + len <= srcmem || srcmem + len <= dstmem)
+        memcpy(dstmem, srcmem, len);
+      else
+        memmove(dstmem, srcmem, len);
+    }
 
-		return len;
-	} else if (!src_is_fd) {
-		return fuse_buf_write(dst, dst_off, src, src_off, len);
-	} else if (!dst_is_fd) {
-		return fuse_buf_read(dst, dst_off, src, src_off, len);
-	} else if (flags & FUSE_BUF_NO_SPLICE) {
-		return fuse_buf_fd_to_fd(dst, dst_off, src, src_off, len);
-	} else {
-		return fuse_buf_splice(dst, dst_off, src, src_off, len, flags);
-	}
+    return len;
+  } else if (!src_is_fd) {
+    return fuse_buf_write(dst, dst_off, src, src_off, len);
+  } else if (!dst_is_fd) {
+    return fuse_buf_read(dst, dst_off, src, src_off, len);
+  } else if (flags & FUSE_BUF_NO_SPLICE) {
+    return fuse_buf_fd_to_fd(dst, dst_off, src, src_off, len);
+  } else {
+    return fuse_buf_splice(dst, dst_off, src, src_off, len, flags);
+  }
 }
 
 static const struct fuse_buf *fuse_bufvec_current(struct fuse_bufvec *bufv)
 {
-	if (bufv->idx < bufv->count)
-		return &bufv->buf[bufv->idx];
-	else
-		return NULL;
+  if (bufv->idx < bufv->count)
+    return &bufv->buf[bufv->idx];
+  else
+    return NULL;
 }
 
 static int fuse_bufvec_advance(struct fuse_bufvec *bufv, size_t len)
 {
-	const struct fuse_buf *buf = fuse_bufvec_current(bufv);
+  const struct fuse_buf *buf = fuse_bufvec_current(bufv);
 
-	bufv->off += len;
-	assert(bufv->off <= buf->size);
-	if (bufv->off == buf->size) {
-		assert(bufv->idx < bufv->count);
-		bufv->idx++;
-		if (bufv->idx == bufv->count)
-			return 0;
-		bufv->off = 0;
-	}
-	return 1;
+  bufv->off += len;
+  assert(bufv->off <= buf->size);
+  if (bufv->off == buf->size) {
+    assert(bufv->idx < bufv->count);
+    bufv->idx++;
+    if (bufv->idx == bufv->count)
+      return 0;
+    bufv->off = 0;
+  }
+  return 1;
 }
 
 ssize_t fuse_buf_copy(struct fuse_bufvec *dstv, struct fuse_bufvec *srcv,
 		      enum fuse_buf_copy_flags flags)
 {
-	size_t copied = 0;
+  size_t copied = 0;
 
-	if (dstv == srcv)
-		return fuse_buf_size(dstv);
+  if (dstv == srcv)
+    return fuse_buf_size(dstv);
 
-	for (;;) {
-		const struct fuse_buf *src = fuse_bufvec_current(srcv);
-		const struct fuse_buf *dst = fuse_bufvec_current(dstv);
-		size_t src_len;
-		size_t dst_len;
-		size_t len;
-		ssize_t res;
+  for (;;) {
+    const struct fuse_buf *src = fuse_bufvec_current(srcv);
+    const struct fuse_buf *dst = fuse_bufvec_current(dstv);
+    size_t src_len;
+    size_t dst_len;
+    size_t len;
+    ssize_t res;
 
-		if (src == NULL || dst == NULL)
-			break;
+    if (src == NULL || dst == NULL)
+      break;
 
-		src_len = src->size - srcv->off;
-		dst_len = dst->size - dstv->off;
-		len = min_size(src_len, dst_len);
+    src_len = src->size - srcv->off;
+    dst_len = dst->size - dstv->off;
+    len = min_size(src_len, dst_len);
 
-		res = fuse_buf_copy_one(dst, dstv->off, src, srcv->off, len, flags);
-		if (res < 0) {
-			if (!copied)
-				return res;
-			break;
-		}
-		copied += res;
+    res = fuse_buf_copy_one(dst, dstv->off, src, srcv->off, len, flags);
+    if (res < 0) {
+      if (!copied)
+        return res;
+      break;
+    }
+    copied += res;
 
-		if (!fuse_bufvec_advance(srcv, res) ||
-		    !fuse_bufvec_advance(dstv, res))
-			break;
+    if (!fuse_bufvec_advance(srcv, res) ||
+        !fuse_bufvec_advance(dstv, res))
+      break;
 
-		if (res < len)
-			break;
-	}
+    if (res < len)
+      break;
+  }
 
-	return copied;
+  return copied;
 }

libfuse/lib/cuse_lowlevel.c

@@ -1,371 +0,0 @@
-/*
-  CUSE: Character device in Userspace
-  Copyright (C) 2008       SUSE Linux Products GmbH
-  Copyright (C) 2008       Tejun Heo <teheo@suse.de>
-
-  This program can be distributed under the terms of the GNU LGPLv2.
-  See the file COPYING.LIB.
-*/
-
-#include "cuse_lowlevel.h"
-#include "fuse_kernel.h"
-#include "fuse_i.h"
-#include "fuse_opt.h"
-#include "fuse_misc.h"
-
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <errno.h>
-#include <unistd.h>
-
-struct cuse_data {
-	struct cuse_lowlevel_ops	clop;
-	unsigned			max_read;
-	unsigned			dev_major;
-	unsigned			dev_minor;
-	unsigned			flags;
-	unsigned			dev_info_len;
-	char				dev_info[];
-};
-
-static struct cuse_lowlevel_ops *req_clop(fuse_req_t req)
-{
-	return &req->f->cuse_data->clop;
-}
-
-static void cuse_fll_open(fuse_req_t req, fuse_ino_t ino,
-			  struct fuse_file_info *fi)
-{
-	(void)ino;
-	req_clop(req)->open(req, fi);
-}
-
-static void cuse_fll_read(fuse_req_t req, fuse_ino_t ino, size_t size,
-			  off_t off, struct fuse_file_info *fi)
-{
-	(void)ino;
-	req_clop(req)->read(req, size, off, fi);
-}
-
-static void cuse_fll_write(fuse_req_t req, fuse_ino_t ino, const char *buf,
-			   size_t size, off_t off, struct fuse_file_info *fi)
-{
-	(void)ino;
-	req_clop(req)->write(req, buf, size, off, fi);
-}
-
-static void cuse_fll_flush(fuse_req_t req, fuse_ino_t ino,
-			   struct fuse_file_info *fi)
-{
-	(void)ino;
-	req_clop(req)->flush(req, fi);
-}
-
-static void cuse_fll_release(fuse_req_t req, fuse_ino_t ino,
-			     struct fuse_file_info *fi)
-{
-	(void)ino;
-	req_clop(req)->release(req, fi);
-}
-
-static void cuse_fll_fsync(fuse_req_t req, fuse_ino_t ino, int datasync,
-			   struct fuse_file_info *fi)
-{
-	(void)ino;
-	req_clop(req)->fsync(req, datasync, fi);
-}
-
-static void cuse_fll_ioctl(fuse_req_t req, fuse_ino_t ino, int cmd, void *arg,
-		       struct fuse_file_info *fi, unsigned int flags,
-		       const void *in_buf, size_t in_bufsz, size_t out_bufsz)
-{
-	(void)ino;
-	req_clop(req)->ioctl(req, cmd, arg, fi, flags, in_buf, in_bufsz,
-			     out_bufsz);
-}
-
-static void cuse_fll_poll(fuse_req_t req, fuse_ino_t ino,
-			  struct fuse_file_info *fi, struct fuse_pollhandle *ph)
-{
-	(void)ino;
-	req_clop(req)->poll(req, fi, ph);
-}
-
-static size_t cuse_pack_info(int argc, const char **argv, char *buf)
-{
-	size_t size = 0;
-	int i;
-
-	for (i = 0; i < argc; i++) {
-		size_t len;
-
-		len = strlen(argv[i]) + 1;
-		size += len;
-		if (buf) {
-			memcpy(buf, argv[i], len);
-			buf += len;
-		}
-	}
-
-	return size;
-}
-
-static struct cuse_data *cuse_prep_data(const struct cuse_info *ci,
-					const struct cuse_lowlevel_ops *clop)
-{
-	struct cuse_data *cd;
-	size_t dev_info_len;
-
-	dev_info_len = cuse_pack_info(ci->dev_info_argc, ci->dev_info_argv,
-				      NULL);
-
-	if (dev_info_len > CUSE_INIT_INFO_MAX) {
-		fprintf(stderr, "cuse: dev_info (%zu) too large, limit=%u\n",
-			dev_info_len, CUSE_INIT_INFO_MAX);
-		return NULL;
-	}
-
-	cd = calloc(1, sizeof(*cd) + dev_info_len);
-	if (!cd) {
-		fprintf(stderr, "cuse: failed to allocate cuse_data\n");
-		return NULL;
-	}
-
-	memcpy(&cd->clop, clop, sizeof(cd->clop));
-	cd->max_read = 131072;
-	cd->dev_major = ci->dev_major;
-	cd->dev_minor = ci->dev_minor;
-	cd->dev_info_len = dev_info_len;
-	cd->flags = ci->flags;
-	cuse_pack_info(ci->dev_info_argc, ci->dev_info_argv, cd->dev_info);
-
-	return cd;
-}
-
-struct fuse_session *cuse_lowlevel_new(struct fuse_args *args,
-				       const struct cuse_info *ci,
-				       const struct cuse_lowlevel_ops *clop,
-				       void *userdata)
-{
-	struct fuse_lowlevel_ops lop;
-	struct cuse_data *cd;
-	struct fuse_session *se;
-	struct fuse_ll *ll;
-
-	cd = cuse_prep_data(ci, clop);
-	if (!cd)
-		return NULL;
-
-	memset(&lop, 0, sizeof(lop));
-	lop.init	= clop->init;
-	lop.destroy	= clop->destroy;
-	lop.open	= clop->open		? cuse_fll_open		: NULL;
-	lop.read	= clop->read		? cuse_fll_read		: NULL;
-	lop.write	= clop->write		? cuse_fll_write	: NULL;
-	lop.flush	= clop->flush		? cuse_fll_flush	: NULL;
-	lop.release	= clop->release		? cuse_fll_release	: NULL;
-	lop.fsync	= clop->fsync		? cuse_fll_fsync	: NULL;
-	lop.ioctl	= clop->ioctl		? cuse_fll_ioctl	: NULL;
-	lop.poll	= clop->poll		? cuse_fll_poll		: NULL;
-
-	se = fuse_lowlevel_new_common(args, &lop, sizeof(lop), userdata);
-	if (!se) {
-		free(cd);
-		return NULL;
-	}
-	ll = se->data;
-	ll->cuse_data = cd;
-
-	return se;
-}
-
-static int cuse_reply_init(fuse_req_t req, struct cuse_init_out *arg,
-			   char *dev_info, unsigned dev_info_len)
-{
-	struct iovec iov[3];
-
-	iov[1].iov_base = arg;
-	iov[1].iov_len = sizeof(struct cuse_init_out);
-	iov[2].iov_base = dev_info;
-	iov[2].iov_len = dev_info_len;
-
-	return fuse_send_reply_iov_nofree(req, 0, iov, 3);
-}
-
-void cuse_lowlevel_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
-{
-	struct fuse_init_in *arg = (struct fuse_init_in *) inarg;
-	struct cuse_init_out outarg;
-	struct fuse_ll *f = req->f;
-	struct cuse_data *cd = f->cuse_data;
-	size_t bufsize = fuse_chan_bufsize(req->ch);
-	struct cuse_lowlevel_ops *clop = req_clop(req);
-
-	(void) nodeid;
-	if (f->debug) {
-		fprintf(stderr, "CUSE_INIT: %u.%u\n", arg->major, arg->minor);
-		fprintf(stderr, "flags=0x%08x\n", arg->flags);
-	}
-	f->conn.proto_major = arg->major;
-	f->conn.proto_minor = arg->minor;
-	f->conn.capable = 0;
-	f->conn.want = 0;
-
-	if (arg->major < 7) {
-		fprintf(stderr, "cuse: unsupported protocol version: %u.%u\n",
-			arg->major, arg->minor);
-		fuse_reply_err(req, EPROTO);
-		return;
-	}
-
-	if (bufsize < FUSE_MIN_READ_BUFFER) {
-		fprintf(stderr, "cuse: warning: buffer size too small: %zu\n",
-			bufsize);
-		bufsize = FUSE_MIN_READ_BUFFER;
-	}
-
-	bufsize -= 4096;
-	if (bufsize < f->conn.max_write)
-		f->conn.max_write = bufsize;
-
-	f->got_init = 1;
-	if (f->op.init)
-		f->op.init(f->userdata, &f->conn);
-
-	memset(&outarg, 0, sizeof(outarg));
-	outarg.major = FUSE_KERNEL_VERSION;
-	outarg.minor = FUSE_KERNEL_MINOR_VERSION;
-	outarg.flags = cd->flags;
-	outarg.max_read = cd->max_read;
-	outarg.max_write = f->conn.max_write;
-	outarg.dev_major = cd->dev_major;
-	outarg.dev_minor = cd->dev_minor;
-
-	if (f->debug) {
-		fprintf(stderr, "   CUSE_INIT: %u.%u\n",
-			outarg.major, outarg.minor);
-		fprintf(stderr, "   flags=0x%08x\n", outarg.flags);
-		fprintf(stderr, "   max_read=0x%08x\n", outarg.max_read);
-		fprintf(stderr, "   max_write=0x%08x\n", outarg.max_write);
-		fprintf(stderr, "   dev_major=%u\n", outarg.dev_major);
-		fprintf(stderr, "   dev_minor=%u\n", outarg.dev_minor);
-		fprintf(stderr, "   dev_info: %.*s\n", cd->dev_info_len,
-			cd->dev_info);
-	}
-
-	cuse_reply_init(req, &outarg, cd->dev_info, cd->dev_info_len);
-
-	if (clop->init_done)
-		clop->init_done(f->userdata);
-
-	fuse_free_req(req);
-}
-
-struct fuse_session *cuse_lowlevel_setup(int argc, char *argv[],
-					 const struct cuse_info *ci,
-					 const struct cuse_lowlevel_ops *clop,
-					 int *multithreaded, void *userdata)
-{
-	const char *devname = "/dev/cuse";
-	static const struct fuse_opt kill_subtype_opts[] = {
-		FUSE_OPT_KEY("subtype=",  FUSE_OPT_KEY_DISCARD),
-		FUSE_OPT_END
-	};
-	struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
-	struct fuse_session *se;
-	struct fuse_chan *ch;
-	int fd;
-	int foreground;
-	int res;
-
-	res = fuse_parse_cmdline(&args, NULL, multithreaded, &foreground);
-	if (res == -1)
-		goto err_args;
-
-	res = fuse_opt_parse(&args, NULL, kill_subtype_opts, NULL);
-	if (res == -1)
-		goto err_args;
-
-	/*
-	 * Make sure file descriptors 0, 1 and 2 are open, otherwise chaos
-	 * would ensue.
-	 */
-	do {
-		fd = open("/dev/null", O_RDWR);
-		if (fd > 2)
-			close(fd);
-	} while (fd >= 0 && fd <= 2);
-
-	se = cuse_lowlevel_new(&args, ci, clop, userdata);
-	fuse_opt_free_args(&args);
-	if (se == NULL)
-		goto err_args;
-
-	fd = open(devname, O_RDWR);
-	if (fd == -1) {
-		if (errno == ENODEV || errno == ENOENT)
-			fprintf(stderr, "cuse: device not found, try 'modprobe cuse' first\n");
-		else
-			fprintf(stderr, "cuse: failed to open %s: %s\n",
-				devname, strerror(errno));
-		goto err_se;
-	}
-
-	ch = fuse_kern_chan_new(fd);
-	if (!ch) {
-		close(fd);
-		goto err_se;
-	}
-
-	fuse_session_add_chan(se, ch);
-
-	res = fuse_set_signal_handlers(se);
-	if (res == -1)
-		goto err_se;
-
-	res = fuse_daemonize(foreground);
-	if (res == -1)
-		goto err_sig;
-
-	return se;
-
-err_sig:
-	fuse_remove_signal_handlers(se);
-err_se:
-	fuse_session_destroy(se);
-err_args:
-	fuse_opt_free_args(&args);
-	return NULL;
-}
-
-void cuse_lowlevel_teardown(struct fuse_session *se)
-{
-	fuse_remove_signal_handlers(se);
-	fuse_session_destroy(se);
-}
-
-int cuse_lowlevel_main(int argc, char *argv[], const struct cuse_info *ci,
-		       const struct cuse_lowlevel_ops *clop, void *userdata)
-{
-	struct fuse_session *se;
-	int multithreaded;
-	int res;
-
-	se = cuse_lowlevel_setup(argc, argv, ci, clop, &multithreaded,
-				 userdata);
-	if (se == NULL)
-		return 1;
-
-	if (multithreaded)
-                res = fuse_session_loop_mt(se, 0);
-	else
-		res = fuse_session_loop(se);
-
-	cuse_lowlevel_teardown(se);
-	if (res == -1)
-		return 1;
-
-	return 0;
-}

libfuse/lib/fuse_chan.c

@@ -0,0 +1,425 @@
+#define _GNU_SOURCE
+
+#include "fuse_chan.h"
+#include "fuse_lowlevel.h"
+#include "fuse_kernel.h"
+#include "sys.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+static const char DEV_FUSE[] = "/dev/fuse";
+
+static
+void*
+aligned_mem(const uint64_t size_)
+{
+  int rv;
+  void *mem;
+  int pagesize;
+
+  pagesize = sys_get_pagesize();
+
+  rv = posix_memalign(&mem,pagesize,size_);
+  if(rv == 0)
+    return mem;
+
+  errno = rv;
+  return NULL;
+}
+
+static
+int
+clone_devfuse_fd(const int devfuse_fd_)
+{
+#ifdef FUSE_DEV_IOC_CLONE
+  int rv;
+  int clone_fd;
+
+  clone_fd = open(DEV_FUSE,O_RDWR|O_CLOEXEC);
+  if(clone_fd == -1)
+    return devfuse_fd_;
+
+  rv = ioctl(clone_fd,FUSE_DEV_IOC_CLONE,&devfuse_fd_);
+  if(rv == -1)
+    {
+      perror("fuse: failed to clone /dev/fuse");
+      close(clone_fd);
+      return devfuse_fd_;
+    }
+
+  return clone_fd;
+#else
+  return dup(devfuse_fd_);
+#endif
+}
+
+int
+fuse_msg_bufsize(void)
+{
+  int bufsize;
+
+  bufsize = ((FUSE_MSG_MAX_PAGES + 1) * sys_get_pagesize());
+
+  return bufsize;
+}
+
+fuse_chan_t*
+fuse_chan_new(int32_t  devfuse_fd_,
+              uint32_t flags_)
+{
+  int rv;
+  int bufsize;
+  fuse_chan_t *ch;
+
+  ch = (fuse_chan_t*)calloc(1,sizeof(fuse_chan_t));
+  if(ch == NULL)
+    {
+      fprintf(stderr, "fuse: failed to allocate channel memory\n");
+      return NULL;
+    }
+
+  bufsize     = fuse_msg_bufsize();
+  ch->fd      = clone_devfuse_fd(devfuse_fd_);
+  ch->buf     = aligned_mem(bufsize);
+  ch->bufsize = bufsize;
+  ch->flags   = flags_;
+  if(flags_ & (FUSE_CHAN_SPLICE_READ|FUSE_CHAN_SPLICE_WRITE))
+    {
+      rv = sys_alloc_pipe(ch->splice_pipe,bufsize);
+      if(rv == -1)
+        ch->flags &= ~(FUSE_CHAN_SPLICE_READ|FUSE_CHAN_SPLICE_WRITE);
+    }
+
+  return ch;
+}
+
+static
+int64_t
+fuse_chan_recv_splice(fuse_chan_t *ch_,
+                      char        *buf_,
+                      uint64_t     size_)
+{
+  int64_t rv;
+  struct iovec iov;
+
+ restart_splice:
+  rv = splice(ch_->fd,NULL,ch_->splice_pipe[1],NULL,size_,SPLICE_F_MOVE);
+  switch((rv == -1) ? errno : 0)
+    {
+    case 0:
+      break;
+    case ENOENT:
+    case EINTR:
+    case EAGAIN:
+      goto restart_splice;
+    case ENODEV:
+      return 0;
+    default:
+      return -errno;
+    }
+
+  iov.iov_base = buf_;
+  iov.iov_len  = rv;
+ restart_vmsplice:
+  rv = vmsplice(ch_->splice_pipe[0],&iov,1,SPLICE_F_MOVE);
+  switch((rv == -1) ? errno : 0)
+    {
+    case 0:
+      break;
+    case ENOENT:
+    case EINTR:
+    case EAGAIN:
+      goto restart_vmsplice;
+    case ENODEV:
+      return 0;
+    default:
+      return -errno;
+    }
+
+  return rv;
+}
+
+static
+int
+fuse_chan_recv_read(fuse_chan_t *ch_,
+                    char        *buf_,
+                    uint64_t     size_)
+{
+  int64_t rv;
+
+ restart:
+  rv = read(ch_->fd,buf_,size_);
+  switch((rv == -1) ? errno : 0)
+    {
+    case 0:
+      break;
+    case ENOENT:
+    case EINTR:
+    case EAGAIN:
+      goto restart;
+    case ENODEV:
+      return 0;
+    default:
+      return -errno;
+    }
+
+  if(rv < sizeof(struct fuse_in_header))
+    {
+      fprintf(stderr, "fuse: short read on fuse device\n");
+      return -EIO;
+    }
+
+  return rv;
+}
+
+int64_t
+fuse_chan_recv(fuse_chan_t *ch_,
+               char        *buf_,
+               size_t       size_)
+{
+  if(ch_->flags & FUSE_CHAN_SPLICE_READ)
+    return fuse_chan_recv_splice(ch_,buf_,size_);
+  return fuse_chan_recv_read(ch_,buf_,size_);
+}
+
+static
+int64_t
+fuse_chan_send_write(fuse_chan_t        *ch_,
+                     const struct iovec  iov_[],
+                     size_t              count_)
+{
+  int64_t rv;
+
+  if(iov_ == NULL)
+    return 0;
+
+  rv = writev(ch_->fd,iov_,count_);
+  if(rv == -1)
+    return -errno;
+
+  return rv;
+}
+
+static
+int64_t
+fuse_chan_send_splice(fuse_chan_t        *ch_,
+                      const struct iovec  iov_[],
+                      size_t              count_)
+{
+  int64_t rv;
+
+  rv = vmsplice(ch_->splice_pipe[1],iov_,count_,SPLICE_F_MOVE);
+  if(rv == -1)
+    return -errno;
+
+  rv = splice(ch_->splice_pipe[0],NULL,ch_->fd,NULL,rv,SPLICE_F_MOVE);
+
+  return rv;
+}
+
+int64_t
+fuse_chan_send(fuse_chan_t        *ch,
+               const struct iovec  iov[],
+               size_t              count)
+{
+  if(ch->flags & FUSE_CHAN_SPLICE_WRITE)
+    return fuse_chan_send_splice(ch,iov,count);
+  return fuse_chan_send_write(ch,iov,count);
+}
+
+static
+int
+retryable_error(const int errno_)
+{
+  switch(errno_)
+    {
+    case EINTR:
+    case EAGAIN:
+      return 1;
+    default:
+      return 0;
+    }
+}
+
+static
+int
+retry_error(const int rv_,
+            const int errno_)
+{
+  if(rv_ == -1)
+    return retryable_error(errno_);
+  return 0;
+}
+
+static
+int64_t
+writen(const int       fd_,
+       void           *buf_,
+       const uint64_t  count_)
+{
+  char *buf;
+  uint64_t n_left;
+  int64_t  n_written;
+
+  buf = buf_;
+  n_left = count_;
+  do
+    {
+      n_written = write(fd_,buf,n_left);
+      if(retry_error(n_written,errno))
+        continue;
+      if(n_written == -1)
+        return -1;
+
+      n_left -= n_written;
+      buf    += n_written;
+    }
+  while(n_left > 0);
+
+  return count_;
+}
+
+static
+int64_t
+readn(const int       fd_,
+      char           *buf_,
+      const uint64_t  count_)
+{
+  uint64_t n_left;
+  int64_t  n_read;
+
+  n_left = count_;
+  do
+    {
+      n_read = read(fd_,buf_,n_left);
+      if(n_read == 0)
+        return 0;
+      if(retry_error(n_read,errno))
+        continue;
+      if(n_read == -1)
+        return -1;
+
+      n_left -= n_read;
+    }
+  while(n_left > 0);
+
+  return count_;
+}
+
+static
+int64_t
+splicen_seek(const int      fd_in_,
+             const loff_t   off_in_,
+             const int      fd_out_,
+             const uint64_t len_)
+{
+  uint64_t n_left;
+  int64_t  n_written;
+  loff_t   off_in;
+
+  n_left = len_;
+  off_in = off_in_;
+  do
+    {
+      n_written = splice(fd_in_,&off_in,fd_out_,NULL,n_left,SPLICE_F_MOVE);
+      if(retry_error(n_written,errno))
+        continue;
+      if(n_written == -1)
+        return -1;
+
+      n_left -= n_written;
+      off_in += n_written;
+    }
+  while(n_left > 0);
+
+  return len_;
+}
+
+static
+int64_t
+splicen_noseek(const int      fd_in_,
+               const int      fd_out_,
+               const uint64_t len_)
+{
+  uint64_t n_left;
+  int64_t  n_written;
+
+  n_left = len_;
+  do
+    {
+      n_written = splice(fd_in_,NULL,fd_out_,NULL,n_left,SPLICE_F_MOVE);
+      if(retry_error(n_written,errno))
+        continue;
+      if(n_written == -1)
+        return -1;
+
+      n_left -= n_written;
+    }
+  while(n_left > 0);
+
+  return len_;
+}
+
+int64_t
+fuse_chan_send_data_splice(fuse_chan_t            *ch_,
+                           struct fuse_out_header *hdr_,
+                           const int               data_fd_,
+                           const loff_t            data_off_,
+                           const int               data_len_)
+{
+  int64_t rv;
+
+  rv = writen(ch_->splice_pipe[1],hdr_,sizeof(struct fuse_out_header));
+  if(rv == -1)
+    return -1;
+
+  rv = splicen_seek(data_fd_,data_off_,ch_->splice_pipe[1],data_len_);
+  if(rv == -1)
+    return -1;
+
+  rv = splicen_noseek(ch_->splice_pipe[0],ch_->fd,(sizeof(struct fuse_out_header)+data_len_));
+
+  return rv;
+}
+
+int64_t
+fuse_chan_send_data(fuse_chan_t            *ch_,
+                    struct fuse_out_header *hdr_,
+                    const int               data_fd_,
+                    const int               data_len_)
+{
+  int64_t rv;
+  char *buf;
+
+  buf = ch_->buf;
+  memcpy(buf,hdr_,sizeof(struct fuse_out_header));
+  rv = readn(data_fd_,
+             &buf[sizeof(struct fuse_out_header)],
+             data_len_);
+  if(rv == -1)
+    return -1;
+
+  rv = write(ch_->fd,buf,(sizeof(struct fuse_out_header) + data_len_));
+
+  return rv;
+}
+
+void
+fuse_chan_destroy(fuse_chan_t *ch)
+{
+  close(ch->fd);
+  if(ch->flags & (FUSE_CHAN_SPLICE_READ|FUSE_CHAN_SPLICE_WRITE))
+    {
+      close(ch->splice_pipe[0]);
+      close(ch->splice_pipe[1]);
+    }
+  free(ch->buf);
+  free(ch);
+}

libfuse/lib/fuse_dev.c

@@ -0,0 +1,56 @@
+#include "fuse_dev.h"
+
+#include <stdlib.h>
+#include <sys/uio.h>
+#include <unistd.h>
+
+fuse_dev_t*
+fuse_dev_alloc(void)
+{
+  return calloc(1,sizeof(fuse_dev_t));
+}
+
+void
+fuse_dev_free(fuse_dev_t *fd_)
+{
+  if(fd_)
+    free(fd_);
+}
+
+fuse_dev_t*
+fuse_dev_clone(fuse_dev_t *fd_)
+{
+  return fd_;
+}
+
+int64_t
+fuse_dev_read(const fuse_dev_t *fd_,
+              void             *buf_,
+              uint64_t          count_)
+{
+  int64_t rv;
+
+  rv = read(fd_->fd,buf_,count_);
+
+  return rv;
+}
+
+int64_t
+fuse_dev_write(const fuse_dev_t   *fd_,
+               const struct iovec *iov_,
+               int                 iovcnt_)
+{
+  int64_t rv;
+
+  rv = writev(fd_->fd,iov_,iovcnt_);
+
+  return rv;
+}
+
+int64_t
+fuse_dev_write_splice(const fuse_dev_t*   fd_,
+                      const struct iovec *iov_,
+                      int                 iovcnt_)
+{
+  
+}

libfuse/lib/fuse_dev.h

@@ -0,0 +1,40 @@
+/*
+  ISC License
+
+  Copyright (c) 2020, 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.
+*/
+
+#pragma once
+
+#include <stdint.h>
+#include <sys/uio.h>
+
+typedef struct fuse_dev_s fuse_dev_t;
+struct fuse_dev_s
+{
+  int fd;
+};
+
+fuse_dev_t* fuse_dev_alloc(void);
+void        fuse_dev_free(fuse_dev_t *fd);
+fuse_dev_t* fuse_dev_clone(fuse_dev_t *fd);
+
+int64_t fuse_dev_read(const fuse_dev_t *fd,
+                      void             *buf,
+                      uint64_t          count);
+
+int64_t fuse_dev_write(const fuse_dev_t   *fd,
+                       const struct iovec *iov,
+                       int                 iovcnt);

libfuse/lib/fuse_i.h

@@ -9,104 +9,97 @@
 #include "fuse.h"
 #include "fuse_lowlevel.h"
 
-struct fuse_chan;
+typedef struct fuse_chan_t fuse_chan_t;
 struct fuse_ll;
 
-struct fuse_session {
-	struct fuse_session_ops op;
-
-	int (*receive_buf)(struct fuse_session *se, struct fuse_buf *buf,
-			   struct fuse_chan **chp);
-
-	void (*process_buf)(void *data, const struct fuse_buf *buf,
-			    struct fuse_chan *ch);
-
-	void *data;
-
-	volatile int exited;
-
-	struct fuse_chan *ch;
+struct fuse_session
+{
+  struct fuse_session_ops op;
+  void *data;
+  volatile int exited;
+  int devfuse_fd;
 };
 
-struct fuse_req {
-	struct fuse_ll *f;
-	uint64_t unique;
-	int ctr;
-	pthread_mutex_t lock;
-	struct fuse_ctx ctx;
-	struct fuse_chan *ch;
-	int interrupted;
-	unsigned int ioctl_64bit : 1;
-	union {
-		struct {
-			uint64_t unique;
-		} i;
-		struct {
-			fuse_interrupt_func_t func;
-			void *data;
-		} ni;
-	} u;
-	struct fuse_req *next;
-	struct fuse_req *prev;
+struct fuse_req
+{
+  struct fuse_ll *f;
+  uint64_t unique;
+  int ctr;
+  pthread_mutex_t lock;
+  struct fuse_ctx ctx;
+  fuse_chan_t *ch;
+  int interrupted;
+  unsigned int ioctl_64bit : 1;
+  union {
+    struct {
+      uint64_t unique;
+    } i;
+    struct {
+      fuse_interrupt_func_t func;
+      void *data;
+    } ni;
+  } u;
+  struct fuse_req *next;
+  struct fuse_req *prev;
 };
 
-struct fuse_notify_req {
-	uint64_t unique;
-	void (*reply)(struct fuse_notify_req *, fuse_req_t, fuse_ino_t,
-		      const void *, const struct fuse_buf *);
-	struct fuse_notify_req *next;
-	struct fuse_notify_req *prev;
+struct fuse_notify_req
+{
+  uint64_t unique;
+  void (*reply)(struct fuse_notify_req *, fuse_req_t, fuse_ino_t,
+                const void *, const struct fuse_buf *);
+  struct fuse_notify_req *next;
+  struct fuse_notify_req *prev;
 };
 
-struct fuse_ll {
-	int debug;
-	int allow_root;
-	int atomic_o_trunc;
-	int no_remote_posix_lock;
-	int no_remote_flock;
-	int big_writes;
-	int splice_write;
-	int splice_move;
-	int splice_read;
-	int no_splice_write;
-	int no_splice_move;
-	int no_splice_read;
-	struct fuse_lowlevel_ops op;
-	int got_init;
-	struct cuse_data *cuse_data;
-	void *userdata;
-	uid_t owner;
-	struct fuse_conn_info conn;
-	struct fuse_req list;
-	struct fuse_req interrupts;
-	pthread_mutex_t lock;
-	int got_destroy;
-	pthread_key_t pipe_key;
-	int broken_splice_nonblock;
-	uint64_t notify_ctr;
-	struct fuse_notify_req notify_list;
+struct fuse_ll
+{
+  int debug;
+  int allow_root;
+  int atomic_o_trunc;
+  int no_remote_posix_lock;
+  int no_remote_flock;
+  int big_writes;
+  int splice_write;
+  int splice_move;
+  int splice_read;
+  int no_splice_write;
+  int no_splice_move;
+  int no_splice_read;
+  struct fuse_lowlevel_ops op;
+  int got_init;
+  void *userdata;
+  uid_t owner;
+  struct fuse_conn_info conn;
+  struct fuse_req list;
+  struct fuse_req interrupts;
+  pthread_mutex_t lock;
+  int got_destroy;
+  pthread_key_t pipe_key;
+  int broken_splice_nonblock;
+  uint64_t notify_ctr;
+  struct fuse_notify_req notify_list;
 };
 
-struct fuse_cmd {
-	char *buf;
-	size_t buflen;
-	struct fuse_chan *ch;
+struct fuse_cmd
+{
+  char *buf;
+  size_t buflen;
+  fuse_chan_t *ch;
 };
 
-struct fuse *fuse_new_common(struct fuse_chan *ch, struct fuse_args *args,
+struct fuse *fuse_new_common(int devfuse_fd, struct fuse_args *args,
 			     const struct fuse_operations *op,
-			     size_t op_size, void *user_data, int compat);
+			     size_t op_size, void *user_data);
 
 int fuse_sync_compat_args(struct fuse_args *args);
 
-struct fuse_chan *fuse_kern_chan_new(int fd);
-
 struct fuse_session *fuse_lowlevel_new_common(struct fuse_args *args,
-					const struct fuse_lowlevel_ops *op,
-					size_t op_size, void *userdata);
+                                              const struct fuse_lowlevel_ops *op,
+                                              size_t op_size, void *userdata);
 
 void fuse_kern_unmount_compat22(const char *mountpoint);
-int fuse_chan_clearfd(struct fuse_chan *ch);
+int fuse_chan_clearfd(fuse_chan_t *ch);
 
 void fuse_kern_unmount(const char *mountpoint, int fd);
 int fuse_kern_mount(const char *mountpoint, struct fuse_args *args);
@@ -120,11 +113,6 @@ struct fuse *fuse_setup_common(int argc, char *argv[],
 			       const struct fuse_operations *op,
 			       size_t op_size,
 			       char **mountpoint,
-			       int *multithreaded,
-			       int *fd,
-			       void *user_data,
-			       int compat);
-
-void cuse_lowlevel_init(fuse_req_t req, fuse_ino_t nodeide, const void *inarg);
+			       void *user_data);
 
 int fuse_start_thread(pthread_t *thread_id, void *(*func)(void *), void *arg);

libfuse/lib/fuse_kern_chan.c

@@ -1,103 +0,0 @@
-/*
-  FUSE: Filesystem in Userspace
-  Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
-
-  This program can be distributed under the terms of the GNU LGPLv2.
-  See the file COPYING.LIB
-*/
-
-#include "fuse_lowlevel.h"
-#include "fuse_kernel.h"
-#include "fuse_i.h"
-
-#include <stdio.h>
-#include <errno.h>
-#include <unistd.h>
-#include <assert.h>
-
-static int fuse_kern_chan_receive(struct fuse_chan **chp, char *buf,
-				  size_t size)
-{
-	struct fuse_chan *ch = *chp;
-	int err;
-	ssize_t res;
-	struct fuse_session *se = fuse_chan_session(ch);
-	assert(se != NULL);
-
-restart:
-	res = read(fuse_chan_fd(ch), buf, size);
-	err = errno;
-
-	if (fuse_session_exited(se))
-		return 0;
-	if (res == -1) {
-		/* ENOENT means the operation was interrupted, it's safe
-		   to restart */
-		if (err == ENOENT)
-			goto restart;
-
-		if (err == ENODEV) {
-			fuse_session_exit(se);
-			return 0;
-		}
-		/* Errors occurring during normal operation: EINTR (read
-		   interrupted), EAGAIN (nonblocking I/O), ENODEV (filesystem
-		   umounted) */
-		if (err != EINTR && err != EAGAIN)
-			perror("fuse: reading device");
-		return -err;
-	}
-	if ((size_t) res < sizeof(struct fuse_in_header)) {
-		fprintf(stderr, "short read on fuse device\n");
-		return -EIO;
-	}
-	return res;
-}
-
-static int fuse_kern_chan_send(struct fuse_chan *ch, const struct iovec iov[],
-			       size_t count)
-{
-	if (iov) {
-		ssize_t res = writev(fuse_chan_fd(ch), iov, count);
-		int err = errno;
-
-		if (res == -1) {
-			struct fuse_session *se = fuse_chan_session(ch);
-
-			assert(se != NULL);
-
-			/* ENOENT means the operation was interrupted */
-			if (!fuse_session_exited(se) && err != ENOENT)
-				perror("fuse: writing device");
-			return -err;
-		}
-	}
-	return 0;
-}
-
-static void fuse_kern_chan_destroy(struct fuse_chan *ch)
-{
-	int fd = fuse_chan_fd(ch);
-
-	if (fd != -1)
-		close(fd);
-}
-
-struct fuse_chan *
-fuse_kern_chan_new(int fd_)
-{
-  long pagesize;
-  size_t bufsize;
-  struct fuse_chan_ops op =
-    {
-      .receive = fuse_kern_chan_receive,
-      .send    = fuse_kern_chan_send,
-      .destroy = fuse_kern_chan_destroy,
-    };
-
-  pagesize = sysconf(_SC_PAGESIZE);
-
-  bufsize = ((FUSE_MAX_MAX_PAGES * pagesize) + 0x1000);
-
-  return fuse_chan_new(&op, fd_, bufsize, NULL);
-}

libfuse/lib/fuse_loop.c

@@ -1,46 +0,0 @@
-/*
-  FUSE: Filesystem in Userspace
-  Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
-
-  This program can be distributed under the terms of the GNU LGPLv2.
-  See the file COPYING.LIB
-*/
-
-#include "fuse_lowlevel.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-
-int fuse_session_loop(struct fuse_session *se)
-{
-	int res = 0;
-	struct fuse_chan *ch = fuse_session_next_chan(se, NULL);
-	size_t bufsize = fuse_chan_bufsize(ch);
-	char *buf = (char*)calloc(bufsize,1);
-	if (!buf) {
-		fprintf(stderr, "fuse: failed to allocate read buffer\n");
-		return -1;
-	}
-
-	while (!fuse_session_exited(se)) {
-		struct fuse_chan *tmpch = ch;
-		struct fuse_buf fbuf = {
-			.mem = buf,
-			.size = bufsize,
-		};
-
-		res = fuse_session_receive_buf(se, &fbuf, &tmpch);
-
-		if (res == -EINTR)
-			continue;
-		if (res <= 0)
-			break;
-
-		fuse_session_process_buf(se, &fbuf, tmpch);
-	}
-
-	free(buf);
-	fuse_session_reset(se);
-	return res < 0 ? -1 : 0;
-}

libfuse/lib/fuse_loop_mt.c

@@ -6,166 +6,189 @@
   See the file COPYING.LIB.
 */
 
+#include "fuse_chan.h"
+#include "fuse_i.h"
+#include "fuse_kernel.h"
 #include "fuse_lowlevel.h"
 #include "fuse_misc.h"
-#include "fuse_kernel.h"
-#include "fuse_i.h"
 
+#include <errno.h>
+#include <semaphore.h>
+#include <signal.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <unistd.h>
-#include <signal.h>
-#include <semaphore.h>
-#include <errno.h>
 #include <sys/time.h>
 #include <unistd.h>
 
 /* Environment var controlling the thread stack size */
 #define ENVNAME_THREAD_STACK "FUSE_THREAD_STACK"
 
-struct fuse_worker {
-	struct fuse_worker *prev;
-	struct fuse_worker *next;
-	pthread_t thread_id;
-	size_t bufsize;
-	char *buf;
-	struct fuse_mt *mt;
-};
-
-struct fuse_mt {
-	struct fuse_session *se;
-	struct fuse_chan *prevch;
-	struct fuse_worker main;
-	sem_t finish;
-	int exit;
-	int error;
-};
-
-static void list_add_worker(struct fuse_worker *w, struct fuse_worker *next)
+struct fuse_worker
 {
-	struct fuse_worker *prev = next->prev;
-	w->next = next;
-	w->prev = prev;
-	prev->next = w;
-	next->prev = w;
+  struct fuse_worker *prev;
+  struct fuse_worker *next;
+  struct fuse_mt *mt;
+  pthread_t thread_id;
+  fuse_chan_t *ch;
+};
+
+struct fuse_mt
+{
+  struct fuse_session *se;
+  struct fuse_worker main;
+  sem_t finish;
+  int exit;
+  int error;
+};
+
+static
+void
+list_add_worker(struct fuse_worker *w,
+                struct fuse_worker *next)
+{
+  struct fuse_worker *prev = next->prev;
+  w->next = next;
+  w->prev = prev;
+  prev->next = w;
+  next->prev = w;
 }
 
-static void list_del_worker(struct fuse_worker *w)
+static
+void
+list_del_worker(struct fuse_worker *w)
 {
-	struct fuse_worker *prev = w->prev;
-	struct fuse_worker *next = w->next;
-	prev->next = next;
-	next->prev = prev;
+  struct fuse_worker *prev = w->prev;
+  struct fuse_worker *next = w->next;
+  prev->next = next;
+  next->prev = prev;
 }
 
 static int fuse_loop_start_thread(struct fuse_mt *mt);
 
-static void *fuse_do_work(void *data)
+static
+void*
+fuse_do_work(void *data)
 {
-	struct fuse_worker *w  = (struct fuse_worker *) data;
-	struct fuse_mt     *mt = w->mt;
+  struct fuse_mt *mt;
+  fuse_chan_t *ch;
+  struct fuse_worker *w;
 
-	while (!fuse_session_exited(mt->se)) {
-		struct fuse_chan *ch = mt->prevch;
-		struct fuse_buf fbuf = {
-			.mem = w->buf,
-			.size = w->bufsize,
-		};
-		int res;
+  w  = (struct fuse_worker*)data;
+  mt = w->mt;
+  ch = w->ch;
+  while(!fuse_session_exited(mt->se))
+    {
+      int res;
+      struct fuse_buf fbuf = { .mem = ch->buf, .size = ch->bufsize };
 
-		pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
-		res = fuse_session_receive_buf(mt->se, &fbuf, &ch);
-		pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
-		if (res == -EINTR)
-			continue;
-		if (res <= 0) {
-			if (res < 0) {
-				fuse_session_exit(mt->se);
-				mt->error = -1;
-			}
-			break;
-		}
+      pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
+      res = fuse_ll_receive_buf(mt->se,&fbuf,ch);
+      pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
+      if(res == -EINTR)
+        continue;
+      if(res == 0)
+        break;
+      if(res < 0)
+        {
+          fuse_session_exit(mt->se);
+          mt->error = -1;
+          break;
+        }
 
-		if (mt->exit)
-			return NULL;
+      if(mt->exit)
+        return NULL;
 
-		fuse_session_process_buf(mt->se, &fbuf, ch);
-	}
+      fuse_ll_process_buf(mt->se->data,&fbuf,ch);
+    }
 
-	sem_post(&mt->finish);
+  sem_post(&mt->finish);
 
-	return NULL;
+  return NULL;
 }
 
-int fuse_start_thread(pthread_t *thread_id, void *(*func)(void *), void *arg)
+int
+fuse_start_thread(pthread_t *thread_id,
+                  void *(*func)(void *),
+                  void *arg)
 {
-	sigset_t oldset;
-	sigset_t newset;
-	int res;
-	pthread_attr_t attr;
-	char *stack_size;
+  int res;
+  sigset_t oldset;
+  sigset_t newset;
+  pthread_attr_t attr;
+  char *stack_size;
 
-	/* Override default stack size */
-	pthread_attr_init(&attr);
-	stack_size = getenv(ENVNAME_THREAD_STACK);
-	if (stack_size && pthread_attr_setstacksize(&attr, atoi(stack_size)))
-		fprintf(stderr, "fuse: invalid stack size: %s\n", stack_size);
+  /* Override default stack size */
+  pthread_attr_init(&attr);
+  stack_size = getenv(ENVNAME_THREAD_STACK);
+  if(stack_size && pthread_attr_setstacksize(&attr,atoi(stack_size)))
+    fprintf(stderr, "fuse: invalid stack size: %s\n", stack_size);
 
-	/* Disallow signal reception in worker threads */
-	sigemptyset(&newset);
-	sigaddset(&newset, SIGTERM);
-	sigaddset(&newset, SIGINT);
-	sigaddset(&newset, SIGHUP);
-	sigaddset(&newset, SIGQUIT);
-	pthread_sigmask(SIG_BLOCK, &newset, &oldset);
-	res = pthread_create(thread_id, &attr, func, arg);
-	pthread_sigmask(SIG_SETMASK, &oldset, NULL);
-	pthread_attr_destroy(&attr);
-	if (res != 0) {
-		fprintf(stderr, "fuse: error creating thread: %s\n",
-			strerror(res));
-		return -1;
-	}
+  /* Disallow signal reception in worker threads */
+  sigemptyset(&newset);
+  sigaddset(&newset, SIGTERM);
+  sigaddset(&newset, SIGINT);
+  sigaddset(&newset, SIGHUP);
+  sigaddset(&newset, SIGQUIT);
+  pthread_sigmask(SIG_BLOCK, &newset, &oldset);
+  res = pthread_create(thread_id, &attr, func, arg);
+  pthread_sigmask(SIG_SETMASK, &oldset, NULL);
+  pthread_attr_destroy(&attr);
 
-	return 0;
+  if(res != 0)
+    {
+      fprintf(stderr, "fuse: error creating thread: %s\n",
+              strerror(res));
+      return -1;
+    }
+
+  return 0;
 }
 
-static int fuse_loop_start_thread(struct fuse_mt *mt)
+static
+int
+fuse_loop_start_thread(struct fuse_mt *mt)
 {
-	int res;
-	struct fuse_worker *w = malloc(sizeof(struct fuse_worker));
-	if (!w) {
-		fprintf(stderr, "fuse: failed to allocate worker structure\n");
-		return -1;
-	}
-	memset(w, 0, sizeof(struct fuse_worker));
-	w->bufsize = fuse_chan_bufsize(mt->prevch);
-	w->buf = calloc(w->bufsize,1);
-	w->mt = mt;
-	if (!w->buf) {
-		fprintf(stderr, "fuse: failed to allocate read buffer\n");
-		free(w);
-		return -1;
-	}
+  int res;
+  struct fuse_worker *w;
 
-	res = fuse_start_thread(&w->thread_id, fuse_do_work, w);
-	if (res == -1) {
-		free(w->buf);
-		free(w);
-		return -1;
-	}
-	list_add_worker(w, &mt->main);
+  w = malloc(sizeof(struct fuse_worker));
+  if(!w)
+    {
+      fprintf(stderr, "fuse: failed to allocate worker structure\n");
+      return -1;
+    }
 
-	return 0;
+  memset(w,0,sizeof(struct fuse_worker));
+
+  w->mt = mt;
+  w->ch = fuse_chan_new(mt->se->devfuse_fd,FUSE_CHAN_SPLICE_READ|FUSE_CHAN_SPLICE_WRITE);
+  if(w->ch == NULL)
+    {
+      fprintf(stderr, "fuse: failed to allocate fuse channel\n");
+      free(w);
+      return -1;
+    }
+
+  res = fuse_start_thread(&w->thread_id, fuse_do_work, w);
+  if(res == -1)
+    {
+      free(w);
+      return -1;
+    }
+
+  list_add_worker(w,&mt->main);
+
+  return 0;
 }
 
 static void fuse_join_worker(struct fuse_worker *w)
 {
-	pthread_join(w->thread_id, NULL);
-	list_del_worker(w);
-	free(w->buf);
-	free(w);
+  pthread_join(w->thread_id, NULL);
+  list_del_worker(w);
+  fuse_chan_destroy(w->ch);
+  free(w);
 }
 
 static int number_of_threads(void)
@@ -178,48 +201,48 @@ static int number_of_threads(void)
 }
 
 int fuse_session_loop_mt(struct fuse_session *se,
-                         const int            _threads)
+                         const int            threads_)
 {
-        int i;
-	int err;
-        int threads;
-	struct fuse_mt mt;
-	struct fuse_worker *w;
+  int i;
+  int err;
+  int threads;
+  struct fuse_mt mt;
+  struct fuse_worker *w;
 
-	memset(&mt, 0, sizeof(struct fuse_mt));
-	mt.se = se;
-	mt.prevch = fuse_session_next_chan(se, NULL);
-	mt.error = 0;
-	mt.main.thread_id = pthread_self();
-	mt.main.prev = mt.main.next = &mt.main;
-	sem_init(&mt.finish, 0, 0);
+  memset(&mt, 0, sizeof(struct fuse_mt));
+  mt.se = se;
+  mt.error = 0;
+  mt.main.thread_id = pthread_self();
+  mt.main.prev = mt.main.next = &mt.main;
+  sem_init(&mt.finish, 0, 0);
 
-        threads = ((_threads > 0) ? _threads : number_of_threads());
-        if(_threads < 0)
-          threads /= -_threads;
-        if(threads == 0)
-          threads = 1;
+  threads = ((threads_ > 0) ? threads_ : number_of_threads());
+  if(threads_ < 0)
+    threads /= -threads_;
+  if(threads == 0)
+    threads = 1;
 
-        err = 0;
-        for(i = 0; (i < threads) && !err; i++)
-          err = fuse_loop_start_thread(&mt);
+  err = 0;
+  for(i = 0; (i < threads) && !err; i++)
+    err = fuse_loop_start_thread(&mt);
 
-	if (!err) {
-		/* sem_wait() is interruptible */
-		while (!fuse_session_exited(se))
-			sem_wait(&mt.finish);
+  if(!err)
+    {
+      /* sem_wait() is interruptible */
+      while(!fuse_session_exited(se))
+        sem_wait(&mt.finish);
 
-		for (w = mt.main.next; w != &mt.main; w = w->next)
-			pthread_cancel(w->thread_id);
-		mt.exit = 1;
+      for(w = mt.main.next; w != &mt.main; w = w->next)
+        pthread_cancel(w->thread_id);
+      mt.exit = 1;
 
-		while (mt.main.next != &mt.main)
-			fuse_join_worker(mt.main.next);
+      while(mt.main.next != &mt.main)
+        fuse_join_worker(mt.main.next);
 
-		err = mt.error;
-	}
+      err = mt.error;
+    }
 
-	sem_destroy(&mt.finish);
-	fuse_session_reset(se);
-	return err;
+  sem_destroy(&mt.finish);
+  fuse_session_reset(se);
+  return err;
 }

libfuse/lib/fuse_mt.c

@@ -16,109 +16,17 @@
 #include <pthread.h>
 #include <assert.h>
 
-struct procdata {
-	struct fuse *f;
-	struct fuse_chan *prevch;
-	struct fuse_session *prevse;
-	fuse_processor_t proc;
-	void *data;
-};
-
-static void mt_session_proc(void *data, const char *buf, size_t len,
-			    struct fuse_chan *ch)
-{
-	struct procdata *pd = (struct procdata *) data;
-	struct fuse_cmd *cmd = *(struct fuse_cmd **) buf;
-
-	(void) len;
-	(void) ch;
-	pd->proc(pd->f, cmd, pd->data);
-}
-
-static void mt_session_exit(void *data, int val)
-{
-	struct procdata *pd = (struct procdata *) data;
-	if (val)
-		fuse_session_exit(pd->prevse);
-	else
-		fuse_session_reset(pd->prevse);
-}
-
-static int mt_session_exited(void *data)
-{
-	struct procdata *pd = (struct procdata *) data;
-	return fuse_session_exited(pd->prevse);
-}
-
-static int mt_chan_receive(struct fuse_chan **chp, char *buf, size_t size)
-{
-	struct fuse_cmd *cmd;
-	struct procdata *pd = (struct procdata *) fuse_chan_data(*chp);
-
-	assert(size >= sizeof(cmd));
-
-	cmd = fuse_read_cmd(pd->f);
-	if (cmd == NULL)
-		return 0;
-
-	*(struct fuse_cmd **) buf = cmd;
-
-	return sizeof(cmd);
-}
-
-int fuse_loop_mt_proc(struct fuse *f, fuse_processor_t proc, void *data)
-{
-	int res;
-	struct procdata pd;
-	struct fuse_session *prevse = fuse_get_session(f);
-	struct fuse_session *se;
-	struct fuse_chan *prevch = fuse_session_next_chan(prevse, NULL);
-	struct fuse_chan *ch;
-	struct fuse_session_ops sop = {
-		.exit = mt_session_exit,
-		.exited = mt_session_exited,
-		.process = mt_session_proc,
-	};
-	struct fuse_chan_ops cop = {
-		.receive = mt_chan_receive,
-	};
-
-	pd.f = f;
-	pd.prevch = prevch;
-	pd.prevse = prevse;
-	pd.proc = proc;
-	pd.data = data;
-
-	se = fuse_session_new(&sop, &pd);
-	if (se == NULL)
-		return -1;
-
-	ch = fuse_chan_new(&cop, fuse_chan_fd(prevch),
-			   sizeof(struct fuse_cmd *), &pd);
-	if (ch == NULL) {
-		fuse_session_destroy(se);
-		return -1;
-	}
-	fuse_session_add_chan(se, ch);
-	res = fuse_session_loop_mt(se,
-                                   fuse_config_num_threads(f));
-	fuse_session_destroy(se);
-	return res;
-}
-
 int fuse_loop_mt(struct fuse *f)
 {
-	if (f == NULL)
-		return -1;
+  if (f == NULL)
+    return -1;
 
-	int res = fuse_start_cleanup_thread(f);
-	if (res)
-		return -1;
+  int res = fuse_start_cleanup_thread(f);
+  if (res)
+    return -1;
 
-	res = fuse_session_loop_mt(fuse_get_session(f),
-                                   fuse_config_num_threads(f));
-	fuse_stop_cleanup_thread(f);
-	return res;
+  res = fuse_session_loop_mt(fuse_get_session(f),
+                             fuse_config_num_threads(f));
+  fuse_stop_cleanup_thread(f);
+  return res;
 }
-
-FUSE_SYMVER(".symver fuse_loop_mt_proc,__fuse_loop_mt@");

libfuse/lib/fuse_opt.c

@@ -15,411 +15,411 @@
 #include <assert.h>
 
 struct fuse_opt_context {
-	void *data;
-	const struct fuse_opt *opt;
-	fuse_opt_proc_t proc;
-	int argctr;
-	int argc;
-	char **argv;
-	struct fuse_args outargs;
-	char *opts;
-	int nonopt;
+  void *data;
+  const struct fuse_opt *opt;
+  fuse_opt_proc_t proc;
+  int argctr;
+  int argc;
+  char **argv;
+  struct fuse_args outargs;
+  char *opts;
+  int nonopt;
 };
 
 void fuse_opt_free_args(struct fuse_args *args)
 {
-	if (args) {
-		if (args->argv && args->allocated) {
-			int i;
-			for (i = 0; i < args->argc; i++)
-				free(args->argv[i]);
-			free(args->argv);
-		}
-		args->argc = 0;
-		args->argv = NULL;
-		args->allocated = 0;
-	}
+  if (args) {
+    if (args->argv && args->allocated) {
+      int i;
+      for (i = 0; i < args->argc; i++)
+        free(args->argv[i]);
+      free(args->argv);
+    }
+    args->argc = 0;
+    args->argv = NULL;
+    args->allocated = 0;
+  }
 }
 
 static int alloc_failed(void)
 {
-	fprintf(stderr, "fuse: memory allocation failed\n");
-	return -1;
+  fprintf(stderr, "fuse: memory allocation failed\n");
+  return -1;
 }
 
 int fuse_opt_add_arg(struct fuse_args *args, const char *arg)
 {
-	char **newargv;
-	char *newarg;
+  char **newargv;
+  char *newarg;
 
-	assert(!args->argv || args->allocated);
+  assert(!args->argv || args->allocated);
 
-	newarg = strdup(arg);
-	if (!newarg)
-		return alloc_failed();
+  newarg = strdup(arg);
+  if (!newarg)
+    return alloc_failed();
 
-	newargv = realloc(args->argv, (args->argc + 2) * sizeof(char *));
-	if (!newargv) {
-		free(newarg);
-		return alloc_failed();
-	}
+  newargv = realloc(args->argv, (args->argc + 2) * sizeof(char *));
+  if (!newargv) {
+    free(newarg);
+    return alloc_failed();
+  }
 
-	args->argv = newargv;
-	args->allocated = 1;
-	args->argv[args->argc++] = newarg;
-	args->argv[args->argc] = NULL;
-	return 0;
+  args->argv = newargv;
+  args->allocated = 1;
+  args->argv[args->argc++] = newarg;
+  args->argv[args->argc] = NULL;
+  return 0;
 }
 
 static int fuse_opt_insert_arg_common(struct fuse_args *args, int pos,
 				      const char *arg)
 {
-	assert(pos <= args->argc);
-	if (fuse_opt_add_arg(args, arg) == -1)
-		return -1;
+  assert(pos <= args->argc);
+  if (fuse_opt_add_arg(args, arg) == -1)
+    return -1;
 
-	if (pos != args->argc - 1) {
-		char *newarg = args->argv[args->argc - 1];
-		memmove(&args->argv[pos + 1], &args->argv[pos],
-			sizeof(char *) * (args->argc - pos - 1));
-		args->argv[pos] = newarg;
-	}
-	return 0;
+  if (pos != args->argc - 1) {
+    char *newarg = args->argv[args->argc - 1];
+    memmove(&args->argv[pos + 1], &args->argv[pos],
+            sizeof(char *) * (args->argc - pos - 1));
+    args->argv[pos] = newarg;
+  }
+  return 0;
 }
 
 int fuse_opt_insert_arg(struct fuse_args *args, int pos, const char *arg)
 {
-	return fuse_opt_insert_arg_common(args, pos, arg);
+  return fuse_opt_insert_arg_common(args, pos, arg);
 }
 
 int fuse_opt_insert_arg_compat(struct fuse_args *args, int pos,
 			       const char *arg);
 int fuse_opt_insert_arg_compat(struct fuse_args *args, int pos, const char *arg)
 {
-	return fuse_opt_insert_arg_common(args, pos, arg);
+  return fuse_opt_insert_arg_common(args, pos, arg);
 }
 
 static int next_arg(struct fuse_opt_context *ctx, const char *opt)
 {
-	if (ctx->argctr + 1 >= ctx->argc) {
-		fprintf(stderr, "fuse: missing argument after `%s'\n", opt);
-		return -1;
-	}
-	ctx->argctr++;
-	return 0;
+  if (ctx->argctr + 1 >= ctx->argc) {
+    fprintf(stderr, "fuse: missing argument after `%s'\n", opt);
+    return -1;
+  }
+  ctx->argctr++;
+  return 0;
 }
 
 static int add_arg(struct fuse_opt_context *ctx, const char *arg)
 {
-	return fuse_opt_add_arg(&ctx->outargs, arg);
+  return fuse_opt_add_arg(&ctx->outargs, arg);
 }
 
 static int add_opt_common(char **opts, const char *opt, int esc)
 {
-	unsigned oldlen = *opts ? strlen(*opts) : 0;
-	char *d = realloc(*opts, oldlen + 1 + strlen(opt) * 2 + 1);
+  unsigned oldlen = *opts ? strlen(*opts) : 0;
+  char *d = realloc(*opts, oldlen + 1 + strlen(opt) * 2 + 1);
 
-	if (!d)
-		return alloc_failed();
+  if (!d)
+    return alloc_failed();
 
-	*opts = d;
-	if (oldlen) {
-		d += oldlen;
-		*d++ = ',';
-	}
+  *opts = d;
+  if (oldlen) {
+    d += oldlen;
+    *d++ = ',';
+  }
 
-	for (; *opt; opt++) {
-		if (esc && (*opt == ',' || *opt == '\\'))
-			*d++ = '\\';
-		*d++ = *opt;
-	}
-	*d = '\0';
+  for (; *opt; opt++) {
+    if (esc && (*opt == ',' || *opt == '\\'))
+      *d++ = '\\';
+    *d++ = *opt;
+  }
+  *d = '\0';
 
-	return 0;
+  return 0;
 }
 
 int fuse_opt_add_opt(char **opts, const char *opt)
 {
-	return add_opt_common(opts, opt, 0);
+  return add_opt_common(opts, opt, 0);
 }
 
 int fuse_opt_add_opt_escaped(char **opts, const char *opt)
 {
-	return add_opt_common(opts, opt, 1);
+  return add_opt_common(opts, opt, 1);
 }
 
 static int add_opt(struct fuse_opt_context *ctx, const char *opt)
 {
-	return add_opt_common(&ctx->opts, opt, 1);
+  return add_opt_common(&ctx->opts, opt, 1);
 }
 
 static int call_proc(struct fuse_opt_context *ctx, const char *arg, int key,
 		     int iso)
 {
-	if (key == FUSE_OPT_KEY_DISCARD)
-		return 0;
+  if (key == FUSE_OPT_KEY_DISCARD)
+    return 0;
 
-	if (key != FUSE_OPT_KEY_KEEP && ctx->proc) {
-		int res = ctx->proc(ctx->data, arg, key, &ctx->outargs);
-		if (res == -1 || !res)
-			return res;
-	}
-	if (iso)
-		return add_opt(ctx, arg);
-	else
-		return add_arg(ctx, arg);
+  if (key != FUSE_OPT_KEY_KEEP && ctx->proc) {
+    int res = ctx->proc(ctx->data, arg, key, &ctx->outargs);
+    if (res == -1 || !res)
+      return res;
+  }
+  if (iso)
+    return add_opt(ctx, arg);
+  else
+    return add_arg(ctx, arg);
 }
 
 static int match_template(const char *t, const char *arg, unsigned *sepp)
 {
-	int arglen = strlen(arg);
-	const char *sep = strchr(t, '=');
-	sep = sep ? sep : strchr(t, ' ');
-	if (sep && (!sep[1] || sep[1] == '%')) {
-		int tlen = sep - t;
-		if (sep[0] == '=')
-			tlen ++;
-		if (arglen >= tlen && strncmp(arg, t, tlen) == 0) {
-			*sepp = sep - t;
-			return 1;
-		}
-	}
-	if (strcmp(t, arg) == 0) {
-		*sepp = 0;
-		return 1;
-	}
-	return 0;
+  int arglen = strlen(arg);
+  const char *sep = strchr(t, '=');
+  sep = sep ? sep : strchr(t, ' ');
+  if (sep && (!sep[1] || sep[1] == '%')) {
+    int tlen = sep - t;
+    if (sep[0] == '=')
+      tlen ++;
+    if (arglen >= tlen && strncmp(arg, t, tlen) == 0) {
+      *sepp = sep - t;
+      return 1;
+    }
+  }
+  if (strcmp(t, arg) == 0) {
+    *sepp = 0;
+    return 1;
+  }
+  return 0;
 }
 
 static const struct fuse_opt *find_opt(const struct fuse_opt *opt,
 				       const char *arg, unsigned *sepp)
 {
-	for (; opt && opt->templ; opt++)
-		if (match_template(opt->templ, arg, sepp))
-			return opt;
-	return NULL;
+  for (; opt && opt->templ; opt++)
+    if (match_template(opt->templ, arg, sepp))
+      return opt;
+  return NULL;
 }
 
 int fuse_opt_match(const struct fuse_opt *opts, const char *opt)
 {
-	unsigned dummy;
-	return find_opt(opts, opt, &dummy) ? 1 : 0;
+  unsigned dummy;
+  return find_opt(opts, opt, &dummy) ? 1 : 0;
 }
 
 static int process_opt_param(void *var, const char *format, const char *param,
 			     const char *arg)
 {
-	assert(format[0] == '%');
-	if (format[1] == 's') {
-		char *copy = strdup(param);
-		if (!copy)
-			return alloc_failed();
+  assert(format[0] == '%');
+  if (format[1] == 's') {
+    char *copy = strdup(param);
+    if (!copy)
+      return alloc_failed();
 
-		*(char **) var = copy;
-	} else {
-		if (sscanf(param, format, var) != 1) {
-			fprintf(stderr, "fuse: invalid parameter in option `%s'\n", arg);
-			return -1;
-		}
-	}
-	return 0;
+    *(char **) var = copy;
+  } else {
+    if (sscanf(param, format, var) != 1) {
+      fprintf(stderr, "fuse: invalid parameter in option `%s'\n", arg);
+      return -1;
+    }
+  }
+  return 0;
 }
 
 static int process_opt(struct fuse_opt_context *ctx,
 		       const struct fuse_opt *opt, unsigned sep,
 		       const char *arg, int iso)
 {
-	if (opt->offset == -1U) {
-		if (call_proc(ctx, arg, opt->value, iso) == -1)
-			return -1;
-	} else {
-		void *var = ctx->data + opt->offset;
-		if (sep && opt->templ[sep + 1]) {
-			const char *param = arg + sep;
-			if (opt->templ[sep] == '=')
-				param ++;
-			if (process_opt_param(var, opt->templ + sep + 1,
-					      param, arg) == -1)
-				return -1;
-		} else
-			*(int *)var = opt->value;
-	}
-	return 0;
+  if (opt->offset == -1U) {
+    if (call_proc(ctx, arg, opt->value, iso) == -1)
+      return -1;
+  } else {
+    void *var = ctx->data + opt->offset;
+    if (sep && opt->templ[sep + 1]) {
+      const char *param = arg + sep;
+      if (opt->templ[sep] == '=')
+        param ++;
+      if (process_opt_param(var, opt->templ + sep + 1,
+                            param, arg) == -1)
+        return -1;
+    } else
+      *(int *)var = opt->value;
+  }
+  return 0;
 }
 
 static int process_opt_sep_arg(struct fuse_opt_context *ctx,
 			       const struct fuse_opt *opt, unsigned sep,
 			       const char *arg, int iso)
 {
-	int res;
-	char *newarg;
-	char *param;
+  int res;
+  char *newarg;
+  char *param;
 
-	if (next_arg(ctx, arg) == -1)
-		return -1;
+  if (next_arg(ctx, arg) == -1)
+    return -1;
 
-	param = ctx->argv[ctx->argctr];
-	newarg = malloc(sep + strlen(param) + 1);
-	if (!newarg)
-		return alloc_failed();
+  param = ctx->argv[ctx->argctr];
+  newarg = malloc(sep + strlen(param) + 1);
+  if (!newarg)
+    return alloc_failed();
 
-	memcpy(newarg, arg, sep);
-	strcpy(newarg + sep, param);
-	res = process_opt(ctx, opt, sep, newarg, iso);
-	free(newarg);
+  memcpy(newarg, arg, sep);
+  strcpy(newarg + sep, param);
+  res = process_opt(ctx, opt, sep, newarg, iso);
+  free(newarg);
 
-	return res;
+  return res;
 }
 
 static int process_gopt(struct fuse_opt_context *ctx, const char *arg, int iso)
 {
-	unsigned sep;
-	const struct fuse_opt *opt = find_opt(ctx->opt, arg, &sep);
-	if (opt) {
-		for (; opt; opt = find_opt(opt + 1, arg, &sep)) {
-			int res;
-			if (sep && opt->templ[sep] == ' ' && !arg[sep])
-				res = process_opt_sep_arg(ctx, opt, sep, arg,
-							  iso);
-			else
-				res = process_opt(ctx, opt, sep, arg, iso);
-			if (res == -1)
-				return -1;
-		}
-		return 0;
-	} else
-		return call_proc(ctx, arg, FUSE_OPT_KEY_OPT, iso);
+  unsigned sep;
+  const struct fuse_opt *opt = find_opt(ctx->opt, arg, &sep);
+  if (opt) {
+    for (; opt; opt = find_opt(opt + 1, arg, &sep)) {
+      int res;
+      if (sep && opt->templ[sep] == ' ' && !arg[sep])
+        res = process_opt_sep_arg(ctx, opt, sep, arg,
+                                  iso);
+      else
+        res = process_opt(ctx, opt, sep, arg, iso);
+      if (res == -1)
+        return -1;
+    }
+    return 0;
+  } else
+    return call_proc(ctx, arg, FUSE_OPT_KEY_OPT, iso);
 }
 
 static int process_real_option_group(struct fuse_opt_context *ctx, char *opts)
 {
-	char *s = opts;
-	char *d = s;
-	int end = 0;
+  char *s = opts;
+  char *d = s;
+  int end = 0;
 
-	while (!end) {
-		if (*s == '\0')
-			end = 1;
-		if (*s == ',' || end) {
-			int res;
+  while (!end) {
+    if (*s == '\0')
+      end = 1;
+    if (*s == ',' || end) {
+      int res;
 
-			*d = '\0';
-			res = process_gopt(ctx, opts, 1);
-			if (res == -1)
-				return -1;
-			d = opts;
-		} else {
-			if (s[0] == '\\' && s[1] != '\0') {
-				s++;
-				if (s[0] >= '0' && s[0] <= '3' &&
-				    s[1] >= '0' && s[1] <= '7' &&
-				    s[2] >= '0' && s[2] <= '7') {
-					*d++ = (s[0] - '0') * 0100 +
-						(s[1] - '0') * 0010 +
-						(s[2] - '0');
-					s += 2;
-				} else {
-					*d++ = *s;
-				}
-			} else {
-				*d++ = *s;
-			}
-		}
-		s++;
-	}
+      *d = '\0';
+      res = process_gopt(ctx, opts, 1);
+      if (res == -1)
+        return -1;
+      d = opts;
+    } else {
+      if (s[0] == '\\' && s[1] != '\0') {
+        s++;
+        if (s[0] >= '0' && s[0] <= '3' &&
+            s[1] >= '0' && s[1] <= '7' &&
+            s[2] >= '0' && s[2] <= '7') {
+          *d++ = (s[0] - '0') * 0100 +
+            (s[1] - '0') * 0010 +
+            (s[2] - '0');
+          s += 2;
+        } else {
+          *d++ = *s;
+        }
+      } else {
+        *d++ = *s;
+      }
+    }
+    s++;
+  }
 
-	return 0;
+  return 0;
 }
 
 static int process_option_group(struct fuse_opt_context *ctx, const char *opts)
 {
-	int res;
-	char *copy = strdup(opts);
+  int res;
+  char *copy = strdup(opts);
 
-	if (!copy) {
-		fprintf(stderr, "fuse: memory allocation failed\n");
-		return -1;
-	}
-	res = process_real_option_group(ctx, copy);
-	free(copy);
-	return res;
+  if (!copy) {
+    fprintf(stderr, "fuse: memory allocation failed\n");
+    return -1;
+  }
+  res = process_real_option_group(ctx, copy);
+  free(copy);
+  return res;
 }
 
 static int process_one(struct fuse_opt_context *ctx, const char *arg)
 {
-	if (ctx->nonopt || arg[0] != '-')
-		return call_proc(ctx, arg, FUSE_OPT_KEY_NONOPT, 0);
-	else if (arg[1] == 'o') {
-		if (arg[2])
-			return process_option_group(ctx, arg + 2);
-		else {
-			if (next_arg(ctx, arg) == -1)
-				return -1;
+  if (ctx->nonopt || arg[0] != '-')
+    return call_proc(ctx, arg, FUSE_OPT_KEY_NONOPT, 0);
+  else if (arg[1] == 'o') {
+    if (arg[2])
+      return process_option_group(ctx, arg + 2);
+    else {
+      if (next_arg(ctx, arg) == -1)
+        return -1;
 
-			return process_option_group(ctx,
-						    ctx->argv[ctx->argctr]);
-		}
-	} else if (arg[1] == '-' && !arg[2]) {
-		if (add_arg(ctx, arg) == -1)
-			return -1;
-		ctx->nonopt = ctx->outargs.argc;
-		return 0;
-	} else
-		return process_gopt(ctx, arg, 0);
+      return process_option_group(ctx,
+                                  ctx->argv[ctx->argctr]);
+    }
+  } else if (arg[1] == '-' && !arg[2]) {
+    if (add_arg(ctx, arg) == -1)
+      return -1;
+    ctx->nonopt = ctx->outargs.argc;
+    return 0;
+  } else
+    return process_gopt(ctx, arg, 0);
 }
 
 static int opt_parse(struct fuse_opt_context *ctx)
 {
-	if (ctx->argc) {
-		if (add_arg(ctx, ctx->argv[0]) == -1)
-			return -1;
-	}
+  if (ctx->argc) {
+    if (add_arg(ctx, ctx->argv[0]) == -1)
+      return -1;
+  }
 
-	for (ctx->argctr = 1; ctx->argctr < ctx->argc; ctx->argctr++)
-		if (process_one(ctx, ctx->argv[ctx->argctr]) == -1)
-			return -1;
+  for (ctx->argctr = 1; ctx->argctr < ctx->argc; ctx->argctr++)
+    if (process_one(ctx, ctx->argv[ctx->argctr]) == -1)
+      return -1;
 
-	if (ctx->opts) {
-		if (fuse_opt_insert_arg(&ctx->outargs, 1, "-o") == -1 ||
-		    fuse_opt_insert_arg(&ctx->outargs, 2, ctx->opts) == -1)
-			return -1;
-	}
+  if (ctx->opts) {
+    if (fuse_opt_insert_arg(&ctx->outargs, 1, "-o") == -1 ||
+        fuse_opt_insert_arg(&ctx->outargs, 2, ctx->opts) == -1)
+      return -1;
+  }
 
-	/* If option separator ("--") is the last argument, remove it */
-	if (ctx->nonopt && ctx->nonopt == ctx->outargs.argc &&
-	    strcmp(ctx->outargs.argv[ctx->outargs.argc - 1], "--") == 0) {
-		free(ctx->outargs.argv[ctx->outargs.argc - 1]);
-		ctx->outargs.argv[--ctx->outargs.argc] = NULL;
-	}
+  /* If option separator ("--") is the last argument, remove it */
+  if (ctx->nonopt && ctx->nonopt == ctx->outargs.argc &&
+      strcmp(ctx->outargs.argv[ctx->outargs.argc - 1], "--") == 0) {
+    free(ctx->outargs.argv[ctx->outargs.argc - 1]);
+    ctx->outargs.argv[--ctx->outargs.argc] = NULL;
+  }
 
-	return 0;
+  return 0;
 }
 
 int fuse_opt_parse(struct fuse_args *args, void *data,
 		   const struct fuse_opt opts[], fuse_opt_proc_t proc)
 {
-	int res;
-	struct fuse_opt_context ctx = {
-		.data = data,
-		.opt = opts,
-		.proc = proc,
-	};
+  int res;
+  struct fuse_opt_context ctx = {
+    .data = data,
+    .opt = opts,
+    .proc = proc,
+  };
 
-	if (!args || !args->argv || !args->argc)
-		return 0;
+  if (!args || !args->argv || !args->argc)
+    return 0;
 
-	ctx.argc = args->argc;
-	ctx.argv = args->argv;
+  ctx.argc = args->argc;
+  ctx.argv = args->argv;
 
-	res = opt_parse(&ctx);
-	if (res != -1) {
-		struct fuse_args tmp = *args;
-		*args = ctx.outargs;
-		ctx.outargs = tmp;
-	}
-	free(ctx.opts);
-	fuse_opt_free_args(&ctx.outargs);
-	return res;
+  res = opt_parse(&ctx);
+  if (res != -1) {
+    struct fuse_args tmp = *args;
+    *args = ctx.outargs;
+    ctx.outargs = tmp;
+  }
+  free(ctx.opts);
+  fuse_opt_free_args(&ctx.outargs);
+  return res;
 }
 
 /* This symbol version was mistakenly added to the version script */

libfuse/lib/fuse_session.c

@@ -6,235 +6,66 @@
   See the file COPYING.LIB
 */
 
-#include "fuse_i.h"
-#include "fuse_misc.h"
+#include "fuse_chan.h"
 #include "fuse_common_compat.h"
+#include "fuse_i.h"
+#include "fuse_kernel.h"
 #include "fuse_lowlevel_compat.h"
+#include "fuse_misc.h"
 
+#include <assert.h>
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <assert.h>
-#include <errno.h>
-
-struct fuse_chan {
-	struct fuse_chan_ops op;
-
-	struct fuse_session *se;
-
-	int fd;
-
-	size_t bufsize;
-
-	void *data;
-
-	int compat;
-};
+#include <sys/ioctl.h>
+#include <unistd.h>
 
 struct fuse_session *fuse_session_new(struct fuse_session_ops *op, void *data)
 {
-	struct fuse_session *se = (struct fuse_session *) malloc(sizeof(*se));
-	if (se == NULL) {
-		fprintf(stderr, "fuse: failed to allocate session\n");
-		return NULL;
-	}
+  struct fuse_session *se = (struct fuse_session *) malloc(sizeof(*se));
+  if (se == NULL) {
+    fprintf(stderr, "fuse: failed to allocate session\n");
+    return NULL;
+  }
 
-	memset(se, 0, sizeof(*se));
-	se->op = *op;
-	se->data = data;
+  memset(se, 0, sizeof(*se));
+  se->op = *op;
+  se->data = data;
 
-	return se;
+  return se;
 }
 
-void fuse_session_add_chan(struct fuse_session *se, struct fuse_chan *ch)
-{
-	assert(se->ch == NULL);
-	assert(ch->se == NULL);
-	se->ch = ch;
-	ch->se = se;
-}
-
-void fuse_session_remove_chan(struct fuse_chan *ch)
-{
-	struct fuse_session *se = ch->se;
-	if (se) {
-		assert(se->ch == ch);
-		se->ch = NULL;
-		ch->se = NULL;
-	}
-}
-
-struct fuse_chan *fuse_session_next_chan(struct fuse_session *se,
-					 struct fuse_chan *ch)
-{
-	assert(ch == NULL || ch == se->ch);
-	if (ch == NULL)
-		return se->ch;
-	else
-		return NULL;
-}
-
-void fuse_session_process(struct fuse_session *se, const char *buf, size_t len,
-			  struct fuse_chan *ch)
-{
-	se->op.process(se->data, buf, len, ch);
-}
-
-void fuse_session_process_buf(struct fuse_session *se,
-			      const struct fuse_buf *buf, struct fuse_chan *ch)
-{
-	if (se->process_buf) {
-		se->process_buf(se->data, buf, ch);
-	} else {
-		assert(!(buf->flags & FUSE_BUF_IS_FD));
-		fuse_session_process(se->data, buf->mem, buf->size, ch);
-	}
-}
-
-int fuse_session_receive_buf(struct fuse_session *se, struct fuse_buf *buf,
-			     struct fuse_chan **chp)
-{
-	int res;
-
-	if (se->receive_buf) {
-		res = se->receive_buf(se, buf, chp);
-	} else {
-		res = fuse_chan_recv(chp, buf->mem, buf->size);
-		if (res > 0)
-			buf->size = res;
-	}
-
-	return res;
-}
-
-
 void fuse_session_destroy(struct fuse_session *se)
 {
-	if (se->op.destroy)
-		se->op.destroy(se->data);
-	if (se->ch != NULL)
-		fuse_chan_destroy(se->ch);
-	free(se);
+  if (se->op.destroy)
+    se->op.destroy(se->data);
+  free(se);
 }
 
 void fuse_session_exit(struct fuse_session *se)
 {
-	if (se->op.exit)
-		se->op.exit(se->data, 1);
-	se->exited = 1;
+  if (se->op.exit)
+    se->op.exit(se->data, 1);
+  se->exited = 1;
 }
 
 void fuse_session_reset(struct fuse_session *se)
 {
-	if (se->op.exit)
-		se->op.exit(se->data, 0);
-	se->exited = 0;
+  if (se->op.exit)
+    se->op.exit(se->data, 0);
+  se->exited = 0;
 }
 
 int fuse_session_exited(struct fuse_session *se)
 {
-	if (se->op.exited)
-		return se->op.exited(se->data);
-	else
-		return se->exited;
+  if (se->op.exited)
+    return se->op.exited(se->data);
+  else
+    return se->exited;
 }
 
 void *fuse_session_data(struct fuse_session *se)
 {
-	return se->data;
+  return se->data;
 }
-
-static struct fuse_chan *fuse_chan_new_common(struct fuse_chan_ops *op, int fd,
-					      size_t bufsize, void *data,
-					      int compat)
-{
-	struct fuse_chan *ch = (struct fuse_chan *) malloc(sizeof(*ch));
-	if (ch == NULL) {
-		fprintf(stderr, "fuse: failed to allocate channel\n");
-		return NULL;
-	}
-
-	memset(ch, 0, sizeof(*ch));
-	ch->op = *op;
-	ch->fd = fd;
-	ch->bufsize = bufsize;
-	ch->data = data;
-	ch->compat = compat;
-
-	return ch;
-}
-
-struct fuse_chan *fuse_chan_new(struct fuse_chan_ops *op, int fd,
-				size_t bufsize, void *data)
-{
-	return fuse_chan_new_common(op, fd, bufsize, data, 0);
-}
-
-struct fuse_chan *fuse_chan_new_compat24(struct fuse_chan_ops_compat24 *op,
-					 int fd, size_t bufsize, void *data)
-{
-	return fuse_chan_new_common((struct fuse_chan_ops *) op, fd, bufsize,
-				    data, 24);
-}
-
-int fuse_chan_fd(struct fuse_chan *ch)
-{
-	return ch->fd;
-}
-
-int fuse_chan_clearfd(struct fuse_chan *ch)
-{
-       int fd = ch->fd;
-       ch->fd = -1;
-       return fd;
-}
-
-size_t fuse_chan_bufsize(struct fuse_chan *ch)
-{
-	return ch->bufsize;
-}
-
-void *fuse_chan_data(struct fuse_chan *ch)
-{
-	return ch->data;
-}
-
-struct fuse_session *fuse_chan_session(struct fuse_chan *ch)
-{
-	return ch->se;
-}
-
-int fuse_chan_recv(struct fuse_chan **chp, char *buf, size_t size)
-{
-	struct fuse_chan *ch = *chp;
-	if (ch->compat)
-		return ((struct fuse_chan_ops_compat24 *) &ch->op)
-			->receive(ch, buf, size);
-	else
-		return ch->op.receive(chp, buf, size);
-}
-
-int fuse_chan_receive(struct fuse_chan *ch, char *buf, size_t size)
-{
-	int res;
-
-	res = fuse_chan_recv(&ch, buf, size);
-	return res >= 0 ? res : (res != -EINTR && res != -EAGAIN) ? -1 : 0;
-}
-
-int fuse_chan_send(struct fuse_chan *ch, const struct iovec iov[], size_t count)
-{
-	return ch->op.send(ch, iov, count);
-}
-
-void fuse_chan_destroy(struct fuse_chan *ch)
-{
-	fuse_session_remove_chan(ch);
-	if (ch->op.destroy)
-		ch->op.destroy(ch);
-	free(ch);
-}
-
-#ifndef __FreeBSD__
-FUSE_SYMVER(".symver fuse_chan_new_compat24,fuse_chan_new@FUSE_2.4");
-#endif

libfuse/lib/fuse_signals.c

@@ -16,57 +16,57 @@ static struct fuse_session *fuse_instance;
 
 static void exit_handler(int sig)
 {
-	(void) sig;
-	if (fuse_instance)
-		fuse_session_exit(fuse_instance);
+  (void) sig;
+  if (fuse_instance)
+    fuse_session_exit(fuse_instance);
 }
 
 static int set_one_signal_handler(int sig, void (*handler)(int), int remove)
 {
-	struct sigaction sa;
-	struct sigaction old_sa;
+  struct sigaction sa;
+  struct sigaction old_sa;
 
-	memset(&sa, 0, sizeof(struct sigaction));
-	sa.sa_handler = remove ? SIG_DFL : handler;
-	sigemptyset(&(sa.sa_mask));
-	sa.sa_flags = 0;
+  memset(&sa, 0, sizeof(struct sigaction));
+  sa.sa_handler = remove ? SIG_DFL : handler;
+  sigemptyset(&(sa.sa_mask));
+  sa.sa_flags = 0;
 
-	if (sigaction(sig, NULL, &old_sa) == -1) {
-		perror("fuse: cannot get old signal handler");
-		return -1;
-	}
+  if (sigaction(sig, NULL, &old_sa) == -1) {
+    perror("fuse: cannot get old signal handler");
+    return -1;
+  }
 
-	if (old_sa.sa_handler == (remove ? handler : SIG_DFL) &&
-	    sigaction(sig, &sa, NULL) == -1) {
-		perror("fuse: cannot set signal handler");
-		return -1;
-	}
-	return 0;
+  if (old_sa.sa_handler == (remove ? handler : SIG_DFL) &&
+      sigaction(sig, &sa, NULL) == -1) {
+    perror("fuse: cannot set signal handler");
+    return -1;
+  }
+  return 0;
 }
 
 int fuse_set_signal_handlers(struct fuse_session *se)
 {
-	if (set_one_signal_handler(SIGHUP, exit_handler, 0) == -1 ||
-	    set_one_signal_handler(SIGINT, exit_handler, 0) == -1 ||
-	    set_one_signal_handler(SIGTERM, exit_handler, 0) == -1 ||
-	    set_one_signal_handler(SIGPIPE, SIG_IGN, 0) == -1)
-		return -1;
+  if (set_one_signal_handler(SIGHUP, exit_handler, 0) == -1 ||
+      set_one_signal_handler(SIGINT, exit_handler, 0) == -1 ||
+      set_one_signal_handler(SIGTERM, exit_handler, 0) == -1 ||
+      set_one_signal_handler(SIGPIPE, SIG_IGN, 0) == -1)
+    return -1;
 
-	fuse_instance = se;
-	return 0;
+  fuse_instance = se;
+  return 0;
 }
 
 void fuse_remove_signal_handlers(struct fuse_session *se)
 {
-	if (fuse_instance != se)
-		fprintf(stderr,
-			"fuse: fuse_remove_signal_handlers: unknown session\n");
-	else
-		fuse_instance = NULL;
+  if (fuse_instance != se)
+    fprintf(stderr,
+            "fuse: fuse_remove_signal_handlers: unknown session\n");
+  else
+    fuse_instance = NULL;
 
-	set_one_signal_handler(SIGHUP, exit_handler, 1);
-	set_one_signal_handler(SIGINT, exit_handler, 1);
-	set_one_signal_handler(SIGTERM, exit_handler, 1);
-	set_one_signal_handler(SIGPIPE, SIG_IGN, 1);
+  set_one_signal_handler(SIGHUP, exit_handler, 1);
+  set_one_signal_handler(SIGINT, exit_handler, 1);
+  set_one_signal_handler(SIGTERM, exit_handler, 1);
+  set_one_signal_handler(SIGPIPE, SIG_IGN, 1);
 }
 

libfuse/lib/fuse_versionscript

@@ -1,207 +0,0 @@
-FUSE_2.2 {
-	global:
-		fuse_destroy;
-		fuse_exit;
-		fuse_exited;
-		fuse_invalidate;
-		fuse_is_lib_option;
-		fuse_loop;
-		fuse_loop_mt;
-		fuse_loop_mt_proc;
-		fuse_main;
-		fuse_main_compat1;
-		fuse_main_compat2;
-		fuse_mount_compat1;
-		fuse_new_compat1;
-		fuse_new_compat2;
-		fuse_process_cmd;
-		fuse_read_cmd;
-		fuse_set_getcontext_func;
-		fuse_setup_compat2;
-};
-
-FUSE_2.4 {
-	global:
-		fuse_add_dirent;
-		fuse_chan_bufsize;
-		fuse_chan_data;
-		fuse_chan_destroy;
-		fuse_chan_fd;
-		fuse_chan_receive;
-		fuse_chan_send;
-		fuse_chan_session;
-		fuse_dirent_size;
-		fuse_kern_chan_new;
-		fuse_lowlevel_is_lib_option;
-		fuse_reply_attr;
-		fuse_reply_buf;
-		fuse_reply_entry;
-		fuse_reply_err;
-		fuse_reply_none;
-		fuse_reply_readlink;
-		fuse_reply_write;
-		fuse_reply_xattr;
-		fuse_req_userdata;
-		fuse_session_add_chan;
-		fuse_session_destroy;
-		fuse_session_exit;
-		fuse_session_exited;
-		fuse_session_loop;
-		fuse_session_loop_mt;
-		fuse_session_new;
-		fuse_session_next_chan;
-		fuse_session_process;
-		fuse_session_reset;
-} FUSE_2.2;
-
-FUSE_2.5 {
-	global:
-		fuse_lowlevel_new_compat;
-		fuse_main_real_compat22;
-		fuse_mount_compat22;
-		fuse_new_compat22;
-		fuse_opt_parse;
-		fuse_opt_add_opt;
-		fuse_opt_add_arg;
-		fuse_opt_free_args;
-		fuse_opt_match;
-		fuse_parse_cmdline;
-		fuse_remove_signal_handlers;
-		fuse_reply_create;
-		fuse_reply_open;
-		fuse_reply_open_compat;
-		fuse_reply_statfs;
-		fuse_reply_statfs_compat;
-		fuse_setup_compat22;
-		fuse_set_signal_handlers;
-} FUSE_2.4;
-
-FUSE_2.6 {
-	global:
-		fuse_add_direntry;
-		fuse_chan_new;
-		fuse_chan_new_compat24;
-		fuse_chan_recv;
-		fuse_daemonize;
-		fuse_get_session;
-		fuse_interrupted;
-		fuse_lowlevel_new;
-		fuse_lowlevel_new_compat25;
-		fuse_main_real;
-		fuse_main_real_compat25;
-		fuse_mount;
-		fuse_mount_compat25;
-		fuse_new;
-		fuse_new_compat25;
-		fuse_opt_insert_arg;
-		fuse_reply_lock;
-		fuse_req_interrupt_func;
-		fuse_req_interrupted;
-		fuse_session_remove_chan;
-		fuse_setup;
-		fuse_setup_compat25;
-		fuse_teardown;
-		fuse_teardown_compat22;
-		fuse_unmount;
-		fuse_unmount_compat22;
-} FUSE_2.5;
-
-FUSE_2.7 {
-	global:
-		fuse_fs_access;
-		fuse_fs_bmap;
-		fuse_fs_chmod;
-		fuse_fs_chown;
-		fuse_fs_create;
-		fuse_fs_destroy;
-		fuse_fs_fgetattr;
-		fuse_fs_flush;
-		fuse_fs_fsync;
-		fuse_fs_fsyncdir;
-		fuse_fs_ftruncate;
-		fuse_fs_getattr;
-		fuse_fs_getxattr;
-		fuse_fs_init;
-		fuse_fs_link;
-		fuse_fs_listxattr;
-		fuse_fs_lock;
-		fuse_fs_mkdir;
-		fuse_fs_mknod;
-		fuse_fs_new;
-		fuse_fs_open;
-		fuse_fs_opendir;
-		fuse_fs_read;
-		fuse_fs_readdir;
-		fuse_fs_readlink;
-		fuse_fs_release;
-		fuse_fs_releasedir;
-		fuse_fs_removexattr;
-		fuse_fs_rename;
-		fuse_fs_rmdir;
-		fuse_fs_setxattr;
-		fuse_fs_statfs;
-		fuse_fs_symlink;
-		fuse_fs_truncate;
-		fuse_fs_unlink;
-		fuse_fs_utimens;
-		fuse_fs_write;
-		fuse_register_module;
-		fuse_reply_iov;
-		fuse_version;
-} FUSE_2.6;
-
-FUSE_2.7.5 {
-	global:
-		fuse_reply_bmap;
-} FUSE_2.7;
-
-FUSE_2.8 {
-	global:
-		cuse_lowlevel_new;
-		cuse_lowlevel_main;
-		cuse_lowlevel_setup;
-		cuse_lowlevel_teardown;
-		fuse_fs_ioctl;
-		fuse_fs_poll;
-		fuse_get_context;
-		fuse_getgroups;
-		fuse_lowlevel_notify_inval_entry;
-		fuse_lowlevel_notify_inval_inode;
-		fuse_lowlevel_notify_poll;
-		fuse_notify_poll;
-		fuse_opt_add_opt_escaped;
-		fuse_pollhandle_destroy;
-		fuse_reply_ioctl;
-		fuse_reply_ioctl_iov;
-		fuse_reply_ioctl_retry;
-		fuse_reply_poll;
-		fuse_req_ctx;
-		fuse_req_getgroups;
-		fuse_session_data;
-} FUSE_2.7.5;
-
-FUSE_2.9 {
-	global:
-		fuse_buf_copy;
-		fuse_buf_size;
-		fuse_fs_read_buf;
-		fuse_fs_write_buf;
-		fuse_lowlevel_notify_retrieve;
-		fuse_lowlevel_notify_store;
-		fuse_reply_data;
-		fuse_session_process_buf;
-		fuse_session_receive_buf;
-		fuse_start_cleanup_thread;
-		fuse_stop_cleanup_thread;
-		fuse_clean_cache;
-		fuse_lowlevel_notify_delete;
-		fuse_fs_flock;
-} FUSE_2.8;
-
-FUSE_2.9.1 {
-	global:
-		fuse_fs_fallocate;
-
-	local:
-		*;
-} FUSE_2.9;

libfuse/lib/helper.c

@@ -7,11 +7,11 @@
 */
 
 #include "config.h"
+#include "fuse_chan.h"
 #include "fuse_i.h"
+#include "fuse_lowlevel.h"
 #include "fuse_misc.h"
 #include "fuse_opt.h"
-#include "fuse_lowlevel.h"
-#include "fuse_common_compat.h"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -23,9 +23,9 @@
 #include <sys/param.h>
 
 enum  {
-	KEY_HELP,
-	KEY_HELP_NOHEADER,
-	KEY_VERSION,
+  KEY_HELP,
+  KEY_HELP_NOHEADER,
+  KEY_VERSION,
 };
 
 struct helper_opts
@@ -42,115 +42,113 @@ static
 const
 struct fuse_opt fuse_helper_opts[] =
   {
-	FUSE_HELPER_OPT("-d",		foreground),
-	FUSE_HELPER_OPT("debug",	foreground),
-	FUSE_HELPER_OPT("-f",		foreground),
-	FUSE_HELPER_OPT("-s",		singlethread),
-	FUSE_HELPER_OPT("fsname=",	nodefault_subtype),
-	FUSE_HELPER_OPT("subtype=",	nodefault_subtype),
-	FUSE_OPT_KEY("-h",		KEY_HELP),
-	FUSE_OPT_KEY("--help",		KEY_HELP),
-	FUSE_OPT_KEY("-ho",		KEY_HELP_NOHEADER),
-	FUSE_OPT_KEY("-V",		KEY_VERSION),
-	FUSE_OPT_KEY("--version",	KEY_VERSION),
-	FUSE_OPT_KEY("-d",		FUSE_OPT_KEY_KEEP),
-	FUSE_OPT_KEY("debug",		FUSE_OPT_KEY_KEEP),
-	FUSE_OPT_KEY("fsname=",		FUSE_OPT_KEY_KEEP),
-	FUSE_OPT_KEY("subtype=",	FUSE_OPT_KEY_KEEP),
-	FUSE_OPT_END
-};
+    FUSE_HELPER_OPT("-d",		foreground),
+    FUSE_HELPER_OPT("debug",	foreground),
+    FUSE_HELPER_OPT("-f",		foreground),
+    FUSE_HELPER_OPT("-s",		singlethread),
+    FUSE_HELPER_OPT("fsname=",	nodefault_subtype),
+    FUSE_HELPER_OPT("subtype=",	nodefault_subtype),
+    FUSE_OPT_KEY("-h",		KEY_HELP),
+    FUSE_OPT_KEY("--help",		KEY_HELP),
+    FUSE_OPT_KEY("-ho",		KEY_HELP_NOHEADER),
+    FUSE_OPT_KEY("-V",		KEY_VERSION),
+    FUSE_OPT_KEY("--version",	KEY_VERSION),
+    FUSE_OPT_KEY("-d",		FUSE_OPT_KEY_KEEP),
+    FUSE_OPT_KEY("debug",		FUSE_OPT_KEY_KEEP),
+    FUSE_OPT_KEY("fsname=",		FUSE_OPT_KEY_KEEP),
+    FUSE_OPT_KEY("subtype=",	FUSE_OPT_KEY_KEEP),
+    FUSE_OPT_END
+  };
 
 static void usage(const char *progname)
 {
-	fprintf(stderr,
-		"usage: %s mountpoint [options]\n\n", progname);
-	fprintf(stderr,
-		"general options:\n"
-		"    -o opt,[opt...]        mount options\n"
-		"    -h   --help            print help\n"
-		"    -V   --version         print version\n"
-		"\n");
+  fprintf(stderr,
+          "usage: %s mountpoint [options]\n\n", progname);
+  fprintf(stderr,
+          "general options:\n"
+          "    -o opt,[opt...]        mount options\n"
+          "    -h   --help            print help\n"
+          "    -V   --version         print version\n"
+          "\n");
 }
 
 static void helper_help(void)
 {
-	fprintf(stderr,
-		"FUSE options:\n"
-		"    -d   -o debug          enable debug output (implies -f)\n"
-		"    -f                     foreground operation\n"
-		"    -s                     disable multi-threaded operation\n"
-		"\n"
-		);
+  fprintf(stderr,
+          "FUSE options:\n"
+          "    -d   -o debug          enable debug output (implies -f)\n"
+          "    -f                     foreground operation\n"
+          "\n"
+          );
 }
 
 static void helper_version(void)
 {
-	fprintf(stderr, "FUSE library version: %s\n", PACKAGE_VERSION);
+  fprintf(stderr, "FUSE library version: %s\n", PACKAGE_VERSION);
 }
 
 static int fuse_helper_opt_proc(void *data, const char *arg, int key,
 				struct fuse_args *outargs)
 {
-	struct helper_opts *hopts = data;
+  struct helper_opts *hopts = data;
 
-	switch (key) {
-	case KEY_HELP:
-		usage(outargs->argv[0]);
-		/* fall through */
+  switch (key) {
+  case KEY_HELP:
+    usage(outargs->argv[0]);
+    /* fall through */
 
-	case KEY_HELP_NOHEADER:
-		helper_help();
-		return fuse_opt_add_arg(outargs, "-h");
+  case KEY_HELP_NOHEADER:
+    helper_help();
+    return fuse_opt_add_arg(outargs, "-h");
 
-	case KEY_VERSION:
-		helper_version();
-		return 1;
+  case KEY_VERSION:
+    helper_version();
+    return 1;
 
-	case FUSE_OPT_KEY_NONOPT:
-		if (!hopts->mountpoint) {
-			char mountpoint[PATH_MAX];
-			if (realpath(arg, mountpoint) == NULL) {
-				fprintf(stderr,
-					"fuse: bad mount point `%s': %s\n",
-					arg, strerror(errno));
-				return -1;
-			}
-			return fuse_opt_add_opt(&hopts->mountpoint, mountpoint);
-		} else {
-			fprintf(stderr, "fuse: invalid argument `%s'\n", arg);
-			return -1;
-		}
+  case FUSE_OPT_KEY_NONOPT:
+    if (!hopts->mountpoint) {
+      char mountpoint[PATH_MAX];
+      if (realpath(arg, mountpoint) == NULL) {
+        fprintf(stderr,
+                "fuse: bad mount point `%s': %s\n",
+                arg, strerror(errno));
+        return -1;
+      }
+      return fuse_opt_add_opt(&hopts->mountpoint, mountpoint);
+    } else {
+      fprintf(stderr, "fuse: invalid argument `%s'\n", arg);
+      return -1;
+    }
 
-	default:
-		return 1;
-	}
+  default:
+    return 1;
+  }
 }
 
 static int add_default_subtype(const char *progname, struct fuse_args *args)
 {
-	int res;
-	char *subtype_opt;
-	const char *basename = strrchr(progname, '/');
-	if (basename == NULL)
-		basename = progname;
-	else if (basename[1] != '\0')
-		basename++;
+  int res;
+  char *subtype_opt;
+  const char *basename = strrchr(progname, '/');
+  if (basename == NULL)
+    basename = progname;
+  else if (basename[1] != '\0')
+    basename++;
 
-	subtype_opt = (char *) malloc(strlen(basename) + 64);
-	if (subtype_opt == NULL) {
-		fprintf(stderr, "fuse: memory allocation failed\n");
-		return -1;
-	}
-	sprintf(subtype_opt, "-osubtype=%s", basename);
-	res = fuse_opt_add_arg(args, subtype_opt);
-	free(subtype_opt);
-	return res;
+  subtype_opt = (char *) malloc(strlen(basename) + 64);
+  if (subtype_opt == NULL) {
+    fprintf(stderr, "fuse: memory allocation failed\n");
+    return -1;
+  }
+  sprintf(subtype_opt, "-osubtype=%s", basename);
+  res = fuse_opt_add_arg(args, subtype_opt);
+  free(subtype_opt);
+  return res;
 }
 
 int
 fuse_parse_cmdline(struct fuse_args  *args_,
                    char             **mountpoint_,
-                   int               *multithreaded_,
                    int               *foreground_)
 {
   int res;
@@ -177,8 +175,6 @@ fuse_parse_cmdline(struct fuse_args  *args_,
   else
     free(hopts.mountpoint);
 
-  if(multithreaded_)
-    *multithreaded_ = !hopts.singlethread;
   if(foreground_)
     *foreground_ = hopts.foreground;
 
@@ -191,62 +187,61 @@ fuse_parse_cmdline(struct fuse_args  *args_,
 
 int fuse_daemonize(int foreground)
 {
-	if (!foreground) {
-		int nullfd;
-		int waiter[2];
-		char completed;
+  if (!foreground) {
+    int nullfd;
+    int waiter[2];
+    char completed;
 
-		if (pipe(waiter)) {
-			perror("fuse_daemonize: pipe");
-			return -1;
-		}
+    if (pipe(waiter)) {
+      perror("fuse_daemonize: pipe");
+      return -1;
+    }
 
-		/*
-		 * demonize current process by forking it and killing the
-		 * parent.  This makes current process as a child of 'init'.
-		 */
-		switch(fork()) {
-		case -1:
-			perror("fuse_daemonize: fork");
-			return -1;
-		case 0:
-			break;
-		default:
-			read(waiter[0], &completed, sizeof(completed));
-			_exit(0);
-		}
+    /*
+     * demonize current process by forking it and killing the
+     * parent.  This makes current process as a child of 'init'.
+     */
+    switch(fork()) {
+    case -1:
+      perror("fuse_daemonize: fork");
+      return -1;
+    case 0:
+      break;
+    default:
+      read(waiter[0], &completed, sizeof(completed));
+      _exit(0);
+    }
 
-		if (setsid() == -1) {
-			perror("fuse_daemonize: setsid");
-			return -1;
-		}
+    if (setsid() == -1) {
+      perror("fuse_daemonize: setsid");
+      return -1;
+    }
 
-		(void) chdir("/");
+    (void) chdir("/");
 
-		nullfd = open("/dev/null", O_RDWR, 0);
-		if (nullfd != -1) {
-			(void) dup2(nullfd, 0);
-			(void) dup2(nullfd, 1);
-			(void) dup2(nullfd, 2);
-			if (nullfd > 2)
-				close(nullfd);
-		}
+    nullfd = open("/dev/null", O_RDWR, 0);
+    if (nullfd != -1) {
+      (void) dup2(nullfd, 0);
+      (void) dup2(nullfd, 1);
+      (void) dup2(nullfd, 2);
+      if (nullfd > 2)
+        close(nullfd);
+    }
 
-		/* Propagate completion of daemon initializatation */
-		completed = 1;
-		write(waiter[1], &completed, sizeof(completed));
-		close(waiter[0]);
-		close(waiter[1]);
-	}
-	return 0;
+    /* Propagate completion of daemon initializatation */
+    completed = 1;
+    write(waiter[1], &completed, sizeof(completed));
+    close(waiter[0]);
+    close(waiter[1]);
+  }
+  return 0;
 }
 
 static
-struct fuse_chan *
+int
 fuse_mount_common(const char       *mountpoint_,
                   struct fuse_args *args_)
 {
-  struct fuse_chan *ch;
   int fd;
 
   /*
@@ -260,252 +255,143 @@ fuse_mount_common(const char       *mountpoint_,
         close(fd);
     } while(fd >= 0 && fd <= 2);
 
-  fd = fuse_mount_compat25(mountpoint_, args_);
+  fd = fuse_kern_mount(mountpoint_,args_);
   if(fd == -1)
-    return NULL;
+    return -1;
 
-  ch = fuse_kern_chan_new(fd);
-  if(!ch)
-    fuse_kern_unmount(mountpoint_, fd);
-
-  return ch;
+  return fd;
 }
 
-struct fuse_chan *
+int
 fuse_mount(const char       *mountpoint_,
            struct fuse_args *args_)
 {
   return fuse_mount_common(mountpoint_,args_);
 }
 
-static void fuse_unmount_common(const char *mountpoint, struct fuse_chan *ch)
+void
+fuse_unmount(const char *mountpoint,
+             int         devfuse_fd)
 {
-	if (mountpoint) {
-		int fd = ch ? fuse_chan_clearfd(ch) : -1;
-		fuse_kern_unmount(mountpoint, fd);
-		if (ch)
-			fuse_chan_destroy(ch);
-	}
+  if(mountpoint == NULL)
+    return;
+  fuse_kern_unmount(mountpoint,devfuse_fd);
 }
 
-void fuse_unmount(const char *mountpoint, struct fuse_chan *ch)
+struct fuse *
+fuse_setup_common(int argc,
+                  char *argv[],
+                  const struct fuse_operations *op,
+                  size_t op_size,
+                  char **mountpoint,
+                  void *user_data)
 {
-	fuse_unmount_common(mountpoint, ch);
-}
+  struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
+  int res;
+  int foreground;
+  int devfuse_fd;
+  struct fuse *fuse;
 
-struct fuse *fuse_setup_common(int argc, char *argv[],
-			       const struct fuse_operations *op,
-			       size_t op_size,
-			       char **mountpoint,
-			       int *multithreaded,
-			       int *fd,
-			       void *user_data,
-			       int compat)
-{
-	struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
-	struct fuse_chan *ch;
-	struct fuse *fuse;
-	int foreground;
-	int res;
+  res = fuse_parse_cmdline(&args, mountpoint, &foreground);
+  if (res == -1)
+    return NULL;
 
-	res = fuse_parse_cmdline(&args, mountpoint, multithreaded, &foreground);
-	if (res == -1)
-		return NULL;
+  devfuse_fd = fuse_mount_common(*mountpoint, &args);
+  if(devfuse_fd == -1)
+    {
+      fuse_opt_free_args(&args);
+      goto err_free;
+    }
 
-	ch = fuse_mount_common(*mountpoint, &args);
-	if (!ch) {
-		fuse_opt_free_args(&args);
-		goto err_free;
-	}
+  fuse = fuse_new_common(devfuse_fd, &args, op, op_size, user_data);
+  fuse_opt_free_args(&args);
+  if (fuse == NULL)
+    goto err_unmount;
 
-	fuse = fuse_new_common(ch, &args, op, op_size, user_data, compat);
-	fuse_opt_free_args(&args);
-	if (fuse == NULL)
-		goto err_unmount;
+  res = fuse_daemonize(foreground);
+  if (res == -1)
+    goto err_unmount;
 
-	res = fuse_daemonize(foreground);
-	if (res == -1)
-		goto err_unmount;
+  res = fuse_set_signal_handlers(fuse_get_session(fuse));
+  if (res == -1)
+    goto err_unmount;
 
-	res = fuse_set_signal_handlers(fuse_get_session(fuse));
-	if (res == -1)
-		goto err_unmount;
+  return fuse;
 
-	if (fd)
-		*fd = fuse_chan_fd(ch);
-
-	return fuse;
-
-err_unmount:
-	fuse_unmount_common(*mountpoint, ch);
-	if (fuse)
-		fuse_destroy(fuse);
-err_free:
-	free(*mountpoint);
-	return NULL;
+ err_unmount:
+  fuse_kern_unmount(*mountpoint,devfuse_fd);
+  if(fuse)
+    fuse_destroy(fuse);
+ err_free:
+  free(*mountpoint);
+  return NULL;
 }
 
 struct fuse *fuse_setup(int argc, char *argv[],
 			const struct fuse_operations *op, size_t op_size,
-			char **mountpoint, int *multithreaded, void *user_data)
+			char **mountpoint, void *user_data)
 {
-	return fuse_setup_common(argc, argv, op, op_size, mountpoint,
-				 multithreaded, NULL, user_data, 0);
+  return fuse_setup_common(argc, argv, op, op_size, mountpoint, user_data);
 }
 
 static void fuse_teardown_common(struct fuse *fuse, char *mountpoint)
 {
-	struct fuse_session *se = fuse_get_session(fuse);
-	struct fuse_chan *ch = fuse_session_next_chan(se, NULL);
-	fuse_remove_signal_handlers(se);
-	fuse_unmount_common(mountpoint, ch);
-	fuse_destroy(fuse);
-	free(mountpoint);
+  struct fuse_session *se = fuse_get_session(fuse);
+  fuse_remove_signal_handlers(se);
+  fuse_kern_unmount(mountpoint,se->devfuse_fd);
+  fuse_destroy(fuse);
+  free(mountpoint);
 }
 
-void fuse_teardown(struct fuse *fuse, char *mountpoint)
+void
+fuse_teardown(struct fuse *fuse,
+              char        *mountpoint)
 {
-	fuse_teardown_common(fuse, mountpoint);
+  fuse_teardown_common(fuse,mountpoint);
 }
 
-static int fuse_main_common(int argc, char *argv[],
-			    const struct fuse_operations *op, size_t op_size,
-			    void *user_data, int compat)
+static
+int
+fuse_main_common(int argc, char *argv[],
+                 const struct fuse_operations *op, size_t op_size,
+                 void *user_data)
 {
-	struct fuse *fuse;
-	char *mountpoint;
-	int multithreaded;
-	int res;
+  struct fuse *fuse;
+  char *mountpoint;
+  int res;
 
-	fuse = fuse_setup_common(argc, argv, op, op_size, &mountpoint,
-				 &multithreaded, NULL, user_data, compat);
-	if (fuse == NULL)
-		return 1;
+  fuse = fuse_setup_common(argc, argv, op, op_size, &mountpoint,
+                           user_data);
+  if(fuse == NULL)
+    return 1;
 
-	if (multithreaded)
-		res = fuse_loop_mt(fuse);
-	else
-		res = fuse_loop(fuse);
+  res = fuse_loop_mt(fuse);
 
-	fuse_teardown_common(fuse, mountpoint);
-	if (res == -1)
-		return 1;
+  fuse_teardown_common(fuse,mountpoint);
+  if (res == -1)
+    return 1;
 
-	return 0;
+  return 0;
 }
 
-int fuse_main_real(int argc, char *argv[], const struct fuse_operations *op,
-		   size_t op_size, void *user_data)
+int
+fuse_main_real(int argc, char *argv[],
+               const struct fuse_operations *op,
+               size_t op_size, void *user_data)
 {
-	return fuse_main_common(argc, argv, op, op_size, user_data, 0);
+  return fuse_main_common(argc, argv, op, op_size, user_data);
 }
 
-#undef fuse_main
-int fuse_main(void);
-int fuse_main(void)
+int
+fuse_main(int argc,
+          char *argv[],
+          const struct fuse_operations *op,
+          void *user_data)
 {
-	fprintf(stderr, "fuse_main(): This function does not exist\n");
-	return -1;
+  return fuse_main_real(argc, argv, op, sizeof(*(op)), user_data);
 }
 
 int fuse_version(void)
 {
-	return FUSE_VERSION;
+  return FUSE_VERSION;
 }
-
-#include "fuse_compat.h"
-
-#if !defined(__FreeBSD__) && !defined(__NetBSD__)
-
-struct fuse *fuse_setup_compat22(int argc, char *argv[],
-				 const struct fuse_operations_compat22 *op,
-				 size_t op_size, char **mountpoint,
-				 int *multithreaded, int *fd)
-{
-	return fuse_setup_common(argc, argv, (struct fuse_operations *) op,
-				 op_size, mountpoint, multithreaded, fd, NULL,
-				 22);
-}
-
-struct fuse *fuse_setup_compat2(int argc, char *argv[],
-				const struct fuse_operations_compat2 *op,
-				char **mountpoint, int *multithreaded,
-				int *fd)
-{
-	return fuse_setup_common(argc, argv, (struct fuse_operations *) op,
-				 sizeof(struct fuse_operations_compat2),
-				 mountpoint, multithreaded, fd, NULL, 21);
-}
-
-int fuse_main_real_compat22(int argc, char *argv[],
-			    const struct fuse_operations_compat22 *op,
-			    size_t op_size)
-{
-	return fuse_main_common(argc, argv, (struct fuse_operations *) op,
-				op_size, NULL, 22);
-}
-
-void fuse_main_compat1(int argc, char *argv[],
-		       const struct fuse_operations_compat1 *op)
-{
-	fuse_main_common(argc, argv, (struct fuse_operations *) op,
-			 sizeof(struct fuse_operations_compat1), NULL, 11);
-}
-
-int fuse_main_compat2(int argc, char *argv[],
-		      const struct fuse_operations_compat2 *op)
-{
-	return fuse_main_common(argc, argv, (struct fuse_operations *) op,
-				sizeof(struct fuse_operations_compat2), NULL,
-				21);
-}
-
-int fuse_mount_compat1(const char *mountpoint, const char *args[])
-{
-	/* just ignore mount args for now */
-	(void) args;
-	return fuse_mount_compat22(mountpoint, NULL);
-}
-
-FUSE_SYMVER(".symver fuse_setup_compat2,__fuse_setup@");
-FUSE_SYMVER(".symver fuse_setup_compat22,fuse_setup@FUSE_2.2");
-FUSE_SYMVER(".symver fuse_teardown,__fuse_teardown@");
-FUSE_SYMVER(".symver fuse_main_compat2,fuse_main@");
-FUSE_SYMVER(".symver fuse_main_real_compat22,fuse_main_real@FUSE_2.2");
-
-#endif /* __FreeBSD__ || __NetBSD__ */
-
-
-struct fuse *fuse_setup_compat25(int argc, char *argv[],
-				 const struct fuse_operations_compat25 *op,
-				 size_t op_size, char **mountpoint,
-				 int *multithreaded, int *fd)
-{
-	return fuse_setup_common(argc, argv, (struct fuse_operations *) op,
-				 op_size, mountpoint, multithreaded, fd, NULL,
-				 25);
-}
-
-int fuse_main_real_compat25(int argc, char *argv[],
-			    const struct fuse_operations_compat25 *op,
-			    size_t op_size)
-{
-	return fuse_main_common(argc, argv, (struct fuse_operations *) op,
-				op_size, NULL, 25);
-}
-
-void fuse_teardown_compat22(struct fuse *fuse, int fd, char *mountpoint)
-{
-	(void) fd;
-	fuse_teardown_common(fuse, mountpoint);
-}
-
-int fuse_mount_compat25(const char *mountpoint, struct fuse_args *args)
-{
-	return fuse_kern_mount(mountpoint, args);
-}
-
-FUSE_SYMVER(".symver fuse_setup_compat25,fuse_setup@FUSE_2.5");
-FUSE_SYMVER(".symver fuse_teardown_compat22,fuse_teardown@FUSE_2.2");
-FUSE_SYMVER(".symver fuse_main_real_compat25,fuse_main_real@FUSE_2.5");
-FUSE_SYMVER(".symver fuse_mount_compat25,fuse_mount@FUSE_2.5");

libfuse/lib/mount_bsd.c

@@ -28,364 +28,364 @@
 #define FUSE_DEV_TRUNK		"/dev/fuse"
 
 enum {
-	KEY_ALLOW_ROOT,
-	KEY_RO,
-	KEY_HELP,
-	KEY_VERSION,
-	KEY_KERN
+  KEY_ALLOW_ROOT,
+  KEY_RO,
+  KEY_HELP,
+  KEY_VERSION,
+  KEY_KERN
 };
 
 struct mount_opts {
-	int allow_other;
-	int allow_root;
-	int ishelp;
-	char *kernel_opts;
+  int allow_other;
+  int allow_root;
+  int ishelp;
+  char *kernel_opts;
 };
 
 #define FUSE_DUAL_OPT_KEY(templ, key) 				\
-	FUSE_OPT_KEY(templ, key), FUSE_OPT_KEY("no" templ, key)
+  FUSE_OPT_KEY(templ, key), FUSE_OPT_KEY("no" templ, key)
 
 static const struct fuse_opt fuse_mount_opts[] = {
-	{ "allow_other", offsetof(struct mount_opts, allow_other), 1 },
-	{ "allow_root", offsetof(struct mount_opts, allow_root), 1 },
-	FUSE_OPT_KEY("allow_root",		KEY_ALLOW_ROOT),
-	FUSE_OPT_KEY("-r",			KEY_RO),
-	FUSE_OPT_KEY("-h",			KEY_HELP),
-	FUSE_OPT_KEY("--help",			KEY_HELP),
-	FUSE_OPT_KEY("-V",			KEY_VERSION),
-	FUSE_OPT_KEY("--version",		KEY_VERSION),
-	/* standard FreeBSD mount options */
-	FUSE_DUAL_OPT_KEY("dev",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("async",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("atime",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("dev",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("exec",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("suid",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("symfollow",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("rdonly",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("sync",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("union",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("userquota",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("groupquota",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("clusterr",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("clusterw",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("suiddir",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("snapshot",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("multilabel",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("acls",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("force",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("update",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("ro",			KEY_KERN),
-	FUSE_DUAL_OPT_KEY("rw",			KEY_KERN),
-	FUSE_DUAL_OPT_KEY("auto",		KEY_KERN),
-	/* options supported under both Linux and FBSD */
-	FUSE_DUAL_OPT_KEY("allow_other",	KEY_KERN),
-	FUSE_DUAL_OPT_KEY("default_permissions",KEY_KERN),
-	FUSE_OPT_KEY("max_read=",		KEY_KERN),
-	FUSE_OPT_KEY("subtype=",		KEY_KERN),
-	/* FBSD FUSE specific mount options */
-	FUSE_DUAL_OPT_KEY("private",		KEY_KERN),
-	FUSE_DUAL_OPT_KEY("neglect_shares",	KEY_KERN),
-	FUSE_DUAL_OPT_KEY("push_symlinks_in",	KEY_KERN),
-	FUSE_OPT_KEY("nosync_unmount",		KEY_KERN),
-	/* stock FBSD mountopt parsing routine lets anything be negated... */
-	/*
-	 * Linux specific mount options, but let just the mount util
-	 * handle them
-	 */
-	FUSE_OPT_KEY("fsname=",			KEY_KERN),
-	FUSE_OPT_KEY("nonempty",		KEY_KERN),
-	FUSE_OPT_KEY("large_read",		KEY_KERN),
-	FUSE_OPT_END
+  { "allow_other", offsetof(struct mount_opts, allow_other), 1 },
+  { "allow_root", offsetof(struct mount_opts, allow_root), 1 },
+  FUSE_OPT_KEY("allow_root",		KEY_ALLOW_ROOT),
+  FUSE_OPT_KEY("-r",			KEY_RO),
+  FUSE_OPT_KEY("-h",			KEY_HELP),
+  FUSE_OPT_KEY("--help",			KEY_HELP),
+  FUSE_OPT_KEY("-V",			KEY_VERSION),
+  FUSE_OPT_KEY("--version",		KEY_VERSION),
+  /* standard FreeBSD mount options */
+  FUSE_DUAL_OPT_KEY("dev",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("async",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("atime",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("dev",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("exec",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("suid",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("symfollow",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("rdonly",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("sync",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("union",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("userquota",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("groupquota",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("clusterr",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("clusterw",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("suiddir",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("snapshot",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("multilabel",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("acls",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("force",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("update",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("ro",			KEY_KERN),
+  FUSE_DUAL_OPT_KEY("rw",			KEY_KERN),
+  FUSE_DUAL_OPT_KEY("auto",		KEY_KERN),
+  /* options supported under both Linux and FBSD */
+  FUSE_DUAL_OPT_KEY("allow_other",	KEY_KERN),
+  FUSE_DUAL_OPT_KEY("default_permissions",KEY_KERN),
+  FUSE_OPT_KEY("max_read=",		KEY_KERN),
+  FUSE_OPT_KEY("subtype=",		KEY_KERN),
+  /* FBSD FUSE specific mount options */
+  FUSE_DUAL_OPT_KEY("private",		KEY_KERN),
+  FUSE_DUAL_OPT_KEY("neglect_shares",	KEY_KERN),
+  FUSE_DUAL_OPT_KEY("push_symlinks_in",	KEY_KERN),
+  FUSE_OPT_KEY("nosync_unmount",		KEY_KERN),
+  /* stock FBSD mountopt parsing routine lets anything be negated... */
+  /*
+   * Linux specific mount options, but let just the mount util
+   * handle them
+   */
+  FUSE_OPT_KEY("fsname=",			KEY_KERN),
+  FUSE_OPT_KEY("nonempty",		KEY_KERN),
+  FUSE_OPT_KEY("large_read",		KEY_KERN),
+  FUSE_OPT_END
 };
 
 static void mount_help(void)
 {
-	fprintf(stderr,
-		"    -o allow_root          allow access to root\n"
-		);
-	system(FUSERMOUNT_PROG " --help");
-	fputc('\n', stderr);
+  fprintf(stderr,
+          "    -o allow_root          allow access to root\n"
+          );
+  system(FUSERMOUNT_PROG " --help");
+  fputc('\n', stderr);
 }
 
 static void mount_version(void)
 {
-	system(FUSERMOUNT_PROG " --version");
+  system(FUSERMOUNT_PROG " --version");
 }
 
 static int fuse_mount_opt_proc(void *data, const char *arg, int key,
 			       struct fuse_args *outargs)
 {
-	struct mount_opts *mo = data;
+  struct mount_opts *mo = data;
 
-	switch (key) {
-	case KEY_ALLOW_ROOT:
-		if (fuse_opt_add_opt(&mo->kernel_opts, "allow_other") == -1 ||
-		    fuse_opt_add_arg(outargs, "-oallow_root") == -1)
-			return -1;
-		return 0;
+  switch (key) {
+  case KEY_ALLOW_ROOT:
+    if (fuse_opt_add_opt(&mo->kernel_opts, "allow_other") == -1 ||
+        fuse_opt_add_arg(outargs, "-oallow_root") == -1)
+      return -1;
+    return 0;
 
-	case KEY_RO:
-		arg = "ro";
-		/* fall through */
+  case KEY_RO:
+    arg = "ro";
+    /* fall through */
 
-	case KEY_KERN:
-		return fuse_opt_add_opt(&mo->kernel_opts, arg);
+  case KEY_KERN:
+    return fuse_opt_add_opt(&mo->kernel_opts, arg);
 
-	case KEY_HELP:
-		mount_help();
-		mo->ishelp = 1;
-		break;
+  case KEY_HELP:
+    mount_help();
+    mo->ishelp = 1;
+    break;
 
-	case KEY_VERSION:
-		mount_version();
-		mo->ishelp = 1;
-		break;
-	}
-	return 1;
+  case KEY_VERSION:
+    mount_version();
+    mo->ishelp = 1;
+    break;
+  }
+  return 1;
 }
 
 void fuse_unmount_compat22(const char *mountpoint)
 {
-	char dev[128];
-	char *ssc, *umount_cmd;
-	FILE *sf;
-	int rv;
-	char seekscript[] =
-		/* error message is annoying in help output */
-		"exec 2>/dev/null; "
-		"/usr/bin/fstat " FUSE_DEV_TRUNK "* | "
-		"/usr/bin/awk 'BEGIN{ getline; if (! ($3 == \"PID\" && $10 == \"NAME\")) exit 1; }; "
-		"              { if ($3 == %d) print $10; }' | "
-		"/usr/bin/sort | "
-		"/usr/bin/uniq | "
-		"/usr/bin/awk '{ i += 1; if (i > 1){ exit 1; }; printf; }; END{ if (i == 0) exit 1; }'";
+  char dev[128];
+  char *ssc, *umount_cmd;
+  FILE *sf;
+  int rv;
+  char seekscript[] =
+    /* error message is annoying in help output */
+    "exec 2>/dev/null; "
+    "/usr/bin/fstat " FUSE_DEV_TRUNK "* | "
+    "/usr/bin/awk 'BEGIN{ getline; if (! ($3 == \"PID\" && $10 == \"NAME\")) exit 1; }; "
+    "              { if ($3 == %d) print $10; }' | "
+    "/usr/bin/sort | "
+    "/usr/bin/uniq | "
+    "/usr/bin/awk '{ i += 1; if (i > 1){ exit 1; }; printf; }; END{ if (i == 0) exit 1; }'";
 
-	(void) mountpoint;
+  (void) mountpoint;
 
-	/*
-	 * If we don't know the fd, we have to resort to the scripted
-	 * solution -- iterating over the fd-s is unpractical, as we
-	 * don't know how many of open files we have. (This could be
-	 * looked up in procfs -- however, that's optional on FBSD; or
-	 * read out from the kmem -- however, that's bound to
-	 * privileges (in fact, that's what happens when we call the
-	 * setgid kmem fstat(1) utility).
-	 */
-	if (asprintf(&ssc, seekscript, getpid()) == -1)
-		return;
+  /*
+   * If we don't know the fd, we have to resort to the scripted
+   * solution -- iterating over the fd-s is unpractical, as we
+   * don't know how many of open files we have. (This could be
+   * looked up in procfs -- however, that's optional on FBSD; or
+   * read out from the kmem -- however, that's bound to
+   * privileges (in fact, that's what happens when we call the
+   * setgid kmem fstat(1) utility).
+   */
+  if (asprintf(&ssc, seekscript, getpid()) == -1)
+    return;
 
-	errno = 0;
-	sf = popen(ssc, "r");
-	free(ssc);
-	if (! sf)
-		return;
+  errno = 0;
+  sf = popen(ssc, "r");
+  free(ssc);
+  if (! sf)
+    return;
 
-	fgets(dev, sizeof(dev), sf);
-	rv = pclose(sf);
-	if (rv)
-		return;
+  fgets(dev, sizeof(dev), sf);
+  rv = pclose(sf);
+  if (rv)
+    return;
 
-	if (asprintf(&umount_cmd, "/sbin/umount %s", dev) == -1)
-		return;
-	system(umount_cmd);
-	free(umount_cmd);
+  if (asprintf(&umount_cmd, "/sbin/umount %s", dev) == -1)
+    return;
+  system(umount_cmd);
+  free(umount_cmd);
 }
 
 static void do_unmount(char *dev, int fd)
 {
-	char device_path[SPECNAMELEN + 12];
-	const char *argv[4];
-	const char umount_cmd[] = "/sbin/umount";
-	pid_t pid;
+  char device_path[SPECNAMELEN + 12];
+  const char *argv[4];
+  const char umount_cmd[] = "/sbin/umount";
+  pid_t pid;
 
-	snprintf(device_path, SPECNAMELEN + 12, _PATH_DEV "%s", dev);
+  snprintf(device_path, SPECNAMELEN + 12, _PATH_DEV "%s", dev);
 
-	argv[0] = umount_cmd;
-	argv[1] = "-f";
-	argv[2] = device_path;
-	argv[3] = NULL;
+  argv[0] = umount_cmd;
+  argv[1] = "-f";
+  argv[2] = device_path;
+  argv[3] = NULL;
 
-	pid = fork();
+  pid = fork();
 
-	if (pid == -1)
-		return;
+  if (pid == -1)
+    return;
 
-	if (pid == 0) {
-		close(fd);
-		execvp(umount_cmd, (char **)argv);
-		exit(1);
-	}
+  if (pid == 0) {
+    close(fd);
+    execvp(umount_cmd, (char **)argv);
+    exit(1);
+  }
 
-	waitpid(pid, NULL, 0);
+  waitpid(pid, NULL, 0);
 }
 
 void fuse_kern_unmount(const char *mountpoint, int fd)
 {
-	char *ep, dev[128];
-	struct stat sbuf;
+  char *ep, dev[128];
+  struct stat sbuf;
 
-	(void)mountpoint;
+  (void)mountpoint;
 
-	if (fstat(fd, &sbuf) == -1)
-		goto out;
+  if (fstat(fd, &sbuf) == -1)
+    goto out;
 
-	devname_r(sbuf.st_rdev, S_IFCHR, dev, 128);
+  devname_r(sbuf.st_rdev, S_IFCHR, dev, 128);
 
-	if (strncmp(dev, "fuse", 4))
-		goto out;
+  if (strncmp(dev, "fuse", 4))
+    goto out;
 
-	strtol(dev + 4, &ep, 10);
-	if (*ep != '\0')
-		goto out;
+  strtol(dev + 4, &ep, 10);
+  if (*ep != '\0')
+    goto out;
 
-	do_unmount(dev, fd);
+  do_unmount(dev, fd);
 
-out:
-	close(fd);
+ out:
+  close(fd);
 }
 
 /* Check if kernel is doing init in background */
 static int init_backgrounded(void)
 {
-	unsigned ibg, len;
+  unsigned ibg, len;
 
-	len = sizeof(ibg);
+  len = sizeof(ibg);
 
-	if (sysctlbyname("vfs.fuse.init_backgrounded", &ibg, &len, NULL, 0))
-		return 0;
+  if (sysctlbyname("vfs.fuse.init_backgrounded", &ibg, &len, NULL, 0))
+    return 0;
 
-	return ibg;
+  return ibg;
 }
 
 
 static int fuse_mount_core(const char *mountpoint, const char *opts)
 {
-	const char *mountprog = FUSERMOUNT_PROG;
-	int fd;
-	char *fdnam, *dev;
-	pid_t pid, cpid;
-	int status;
+  const char *mountprog = FUSERMOUNT_PROG;
+  int fd;
+  char *fdnam, *dev;
+  pid_t pid, cpid;
+  int status;
 
-	fdnam = getenv("FUSE_DEV_FD");
+  fdnam = getenv("FUSE_DEV_FD");
 
-	if (fdnam) {
-		char *ep;
+  if (fdnam) {
+    char *ep;
 
-		fd = strtol(fdnam, &ep, 10);
+    fd = strtol(fdnam, &ep, 10);
 
-		if (*ep != '\0') {
-			fprintf(stderr, "invalid value given in FUSE_DEV_FD\n");
-			return -1;
-		}
+    if (*ep != '\0') {
+      fprintf(stderr, "invalid value given in FUSE_DEV_FD\n");
+      return -1;
+    }
 
-		if (fd < 0)
-			return -1;
+    if (fd < 0)
+      return -1;
 
-		goto mount;
-	}
+    goto mount;
+  }
 
-	dev = getenv("FUSE_DEV_NAME");
+  dev = getenv("FUSE_DEV_NAME");
 
-	if (! dev)
-		dev = (char *)FUSE_DEV_TRUNK;
+  if (! dev)
+    dev = (char *)FUSE_DEV_TRUNK;
 
-	if ((fd = open(dev, O_RDWR)) < 0) {
-		perror("fuse: failed to open fuse device");
-		return -1;
-	}
+  if ((fd = open(dev, O_RDWR)) < 0) {
+    perror("fuse: failed to open fuse device");
+    return -1;
+  }
 
-mount:
-	if (getenv("FUSE_NO_MOUNT") || ! mountpoint)
-		goto out;
+ mount:
+  if (getenv("FUSE_NO_MOUNT") || ! mountpoint)
+    goto out;
 
-	pid = fork();
-	cpid = pid;
+  pid = fork();
+  cpid = pid;
 
-	if (pid == -1) {
-		perror("fuse: fork() failed");
-		close(fd);
-		return -1;
-	}
+  if (pid == -1) {
+    perror("fuse: fork() failed");
+    close(fd);
+    return -1;
+  }
 
-	if (pid == 0) {
-		if (! init_backgrounded()) {
-			/*
-			 * If init is not backgrounded, we have to
-			 * call the mount util backgrounded, to avoid
-			 * deadlock.
-			 */
+  if (pid == 0) {
+    if (! init_backgrounded()) {
+      /*
+       * If init is not backgrounded, we have to
+       * call the mount util backgrounded, to avoid
+       * deadlock.
+       */
 
-			pid = fork();
+      pid = fork();
 
-			if (pid == -1) {
-				perror("fuse: fork() failed");
-				close(fd);
-				exit(1);
-			}
-		}
+      if (pid == -1) {
+        perror("fuse: fork() failed");
+        close(fd);
+        exit(1);
+      }
+    }
 
-		if (pid == 0) {
-			const char *argv[32];
-			int a = 0;
+    if (pid == 0) {
+      const char *argv[32];
+      int a = 0;
 
-			if (! fdnam && asprintf(&fdnam, "%d", fd) == -1) {
-				perror("fuse: failed to assemble mount arguments");
-				exit(1);
-			}
+      if (! fdnam && asprintf(&fdnam, "%d", fd) == -1) {
+        perror("fuse: failed to assemble mount arguments");
+        exit(1);
+      }
 
-			argv[a++] = mountprog;
-			if (opts) {
-				argv[a++] = "-o";
-				argv[a++] = opts;
-			}
-			argv[a++] = fdnam;
-			argv[a++] = mountpoint;
-			argv[a++] = NULL;
-			execvp(mountprog, (char **) argv);
-			perror("fuse: failed to exec mount program");
-			exit(1);
-		}
+      argv[a++] = mountprog;
+      if (opts) {
+        argv[a++] = "-o";
+        argv[a++] = opts;
+      }
+      argv[a++] = fdnam;
+      argv[a++] = mountpoint;
+      argv[a++] = NULL;
+      execvp(mountprog, (char **) argv);
+      perror("fuse: failed to exec mount program");
+      exit(1);
+    }
 
-		exit(0);
-	}
+    exit(0);
+  }
 
-	if (waitpid(cpid, &status, 0) == -1 || WEXITSTATUS(status) != 0) {
-		perror("fuse: failed to mount file system");
-		close(fd);
-		return -1;
-	}
+  if (waitpid(cpid, &status, 0) == -1 || WEXITSTATUS(status) != 0) {
+    perror("fuse: failed to mount file system");
+    close(fd);
+    return -1;
+  }
 
-out:
-	return fd;
+ out:
+  return fd;
 }
 
 int fuse_kern_mount(const char *mountpoint, struct fuse_args *args)
 {
-	struct mount_opts mo;
-	int res = -1;
+  struct mount_opts mo;
+  int res = -1;
 
-	memset(&mo, 0, sizeof(mo));
-	/* mount util should not try to spawn the daemon */
-	setenv("MOUNT_FUSEFS_SAFE", "1", 1);
-	/* to notify the mount util it's called from lib */
-	setenv("MOUNT_FUSEFS_CALL_BY_LIB", "1", 1);
+  memset(&mo, 0, sizeof(mo));
+  /* mount util should not try to spawn the daemon */
+  setenv("MOUNT_FUSEFS_SAFE", "1", 1);
+  /* to notify the mount util it's called from lib */
+  setenv("MOUNT_FUSEFS_CALL_BY_LIB", "1", 1);
 
-	if (args &&
-	    fuse_opt_parse(args, &mo, fuse_mount_opts, fuse_mount_opt_proc) == -1)
-		return -1;
+  if (args &&
+      fuse_opt_parse(args, &mo, fuse_mount_opts, fuse_mount_opt_proc) == -1)
+    return -1;
 
-	if (mo.allow_other && mo.allow_root) {
-		fprintf(stderr, "fuse: 'allow_other' and 'allow_root' options are mutually exclusive\n");
-		goto out;
-	}
-	if (mo.ishelp)
-		return 0;
+  if (mo.allow_other && mo.allow_root) {
+    fprintf(stderr, "fuse: 'allow_other' and 'allow_root' options are mutually exclusive\n");
+    goto out;
+  }
+  if (mo.ishelp)
+    return 0;
 
-	res = fuse_mount_core(mountpoint, mo.kernel_opts);
-out:
-	free(mo.kernel_opts);
-	return res;
+  res = fuse_mount_core(mountpoint, mo.kernel_opts);
+ out:
+  free(mo.kernel_opts);
+  return res;
 }
 
 FUSE_SYMVER(".symver fuse_unmount_compat22,fuse_unmount@FUSE_2.2");

libfuse/lib/mount_util.c

@@ -31,333 +31,316 @@
 #else
 static int mtab_needs_update(const char *mnt)
 {
-	int res;
-	struct stat stbuf;
+  int res;
+  struct stat stbuf;
 
-	/* If mtab is within new mount, don't touch it */
-	if (strncmp(mnt, _PATH_MOUNTED, strlen(mnt)) == 0 &&
-	    _PATH_MOUNTED[strlen(mnt)] == '/')
-		return 0;
+  /* If mtab is within new mount, don't touch it */
+  if (strncmp(mnt, _PATH_MOUNTED, strlen(mnt)) == 0 &&
+      _PATH_MOUNTED[strlen(mnt)] == '/')
+    return 0;
 
-	/*
-	 * Skip mtab update if /etc/mtab:
-	 *
-	 *  - doesn't exist,
-	 *  - is a symlink,
-	 *  - is on a read-only filesystem.
-	 */
-	res = lstat(_PATH_MOUNTED, &stbuf);
-	if (res == -1) {
-		if (errno == ENOENT)
-			return 0;
-	} else {
-		uid_t ruid;
-		int err;
+  /*
+   * Skip mtab update if /etc/mtab:
+   *
+   *  - doesn't exist,
+   *  - is a symlink,
+   *  - is on a read-only filesystem.
+   */
+  res = lstat(_PATH_MOUNTED, &stbuf);
+  if (res == -1) {
+    if (errno == ENOENT)
+      return 0;
+  } else {
+    uid_t ruid;
+    int err;
 
-		if (S_ISLNK(stbuf.st_mode))
-			return 0;
+    if (S_ISLNK(stbuf.st_mode))
+      return 0;
 
-		ruid = getuid();
-		if (ruid != 0)
-			setreuid(0, -1);
+    ruid = getuid();
+    if (ruid != 0)
+      setreuid(0, -1);
 
-		res = access(_PATH_MOUNTED, W_OK);
-		err = (res == -1) ? errno : 0;
-		if (ruid != 0)
-			setreuid(ruid, -1);
+    res = access(_PATH_MOUNTED, W_OK);
+    err = (res == -1) ? errno : 0;
+    if (ruid != 0)
+      setreuid(ruid, -1);
 
-		if (err == EROFS)
-			return 0;
-	}
+    if (err == EROFS)
+      return 0;
+  }
 
-	return 1;
+  return 1;
 }
 #endif /* __NetBSD__ */
 
 static int add_mount(const char *progname, const char *fsname,
-		       const char *mnt, const char *type, const char *opts)
+                     const char *mnt, const char *type, const char *opts)
 {
-	int res;
-	int status;
-	sigset_t blockmask;
-	sigset_t oldmask;
+  int res;
+  int status;
+  sigset_t blockmask;
+  sigset_t oldmask;
 
-	sigemptyset(&blockmask);
-	sigaddset(&blockmask, SIGCHLD);
-	res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
-	if (res == -1) {
-		fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
-		return -1;
-	}
+  sigemptyset(&blockmask);
+  sigaddset(&blockmask, SIGCHLD);
+  res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
+  if (res == -1) {
+    fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
+    return -1;
+  }
 
-	res = fork();
-	if (res == -1) {
-		fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
-		goto out_restore;
-	}
-	if (res == 0) {
-		char *env = NULL;
+  res = fork();
+  if (res == -1) {
+    fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
+    goto out_restore;
+  }
+  if (res == 0) {
+    char *env = NULL;
 
-		sigprocmask(SIG_SETMASK, &oldmask, NULL);
-		setuid(geteuid());
-		execle("/bin/mount", "/bin/mount", "--no-canonicalize", "-i",
-		       "-f", "-t", type, "-o", opts, fsname, mnt, NULL, &env);
-		fprintf(stderr, "%s: failed to execute /bin/mount: %s\n",
-			progname, strerror(errno));
-		exit(1);
-	}
-	res = waitpid(res, &status, 0);
-	if (res == -1)
-		fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
+    sigprocmask(SIG_SETMASK, &oldmask, NULL);
+    setuid(geteuid());
+    execle("/bin/mount", "/bin/mount", "--no-canonicalize", "-i",
+           "-f", "-t", type, "-o", opts, fsname, mnt, NULL, &env);
+    fprintf(stderr, "%s: failed to execute /bin/mount: %s\n",
+            progname, strerror(errno));
+    exit(1);
+  }
+  res = waitpid(res, &status, 0);
+  if (res == -1)
+    fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
 
-	if (status != 0)
-		res = -1;
+  if (status != 0)
+    res = -1;
 
  out_restore:
-	sigprocmask(SIG_SETMASK, &oldmask, NULL);
+  sigprocmask(SIG_SETMASK, &oldmask, NULL);
 
-	return res;
+  return res;
 }
 
 int fuse_mnt_add_mount(const char *progname, const char *fsname,
 		       const char *mnt, const char *type, const char *opts)
 {
-	if (!mtab_needs_update(mnt))
-		return 0;
+  if (!mtab_needs_update(mnt))
+    return 0;
 
-	return add_mount(progname, fsname, mnt, type, opts);
+  return add_mount(progname, fsname, mnt, type, opts);
 }
 
 static int exec_umount(const char *progname, const char *rel_mnt, int lazy)
 {
-	int res;
-	int status;
-	sigset_t blockmask;
-	sigset_t oldmask;
+  int res;
+  int status;
+  sigset_t blockmask;
+  sigset_t oldmask;
 
-	sigemptyset(&blockmask);
-	sigaddset(&blockmask, SIGCHLD);
-	res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
-	if (res == -1) {
-		fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
-		return -1;
-	}
+  sigemptyset(&blockmask);
+  sigaddset(&blockmask, SIGCHLD);
+  res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
+  if (res == -1) {
+    fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
+    return -1;
+  }
 
-	res = fork();
-	if (res == -1) {
-		fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
-		goto out_restore;
-	}
-	if (res == 0) {
-		char *env = NULL;
+  res = fork();
+  if (res == -1) {
+    fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
+    goto out_restore;
+  }
+  if (res == 0) {
+    char *env = NULL;
 
-		sigprocmask(SIG_SETMASK, &oldmask, NULL);
-		setuid(geteuid());
-		if (lazy) {
-			execle("/bin/umount", "/bin/umount", "-i", rel_mnt,
-			       "-l", NULL, &env);
-		} else {
-			execle("/bin/umount", "/bin/umount", "-i", rel_mnt,
-			       NULL, &env);
-		}
-		fprintf(stderr, "%s: failed to execute /bin/umount: %s\n",
-			progname, strerror(errno));
-		exit(1);
-	}
-	res = waitpid(res, &status, 0);
-	if (res == -1)
-		fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
+    sigprocmask(SIG_SETMASK, &oldmask, NULL);
+    setuid(geteuid());
+    if (lazy) {
+      execle("/bin/umount", "/bin/umount", "-i", rel_mnt,
+             "-l", NULL, &env);
+    } else {
+      execle("/bin/umount", "/bin/umount", "-i", rel_mnt,
+             NULL, &env);
+    }
+    fprintf(stderr, "%s: failed to execute /bin/umount: %s\n",
+            progname, strerror(errno));
+    exit(1);
+  }
+  res = waitpid(res, &status, 0);
+  if (res == -1)
+    fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
 
-	if (status != 0) {
-		res = -1;
-	}
+  if (status != 0) {
+    res = -1;
+  }
 
  out_restore:
-	sigprocmask(SIG_SETMASK, &oldmask, NULL);
-	return res;
+  sigprocmask(SIG_SETMASK, &oldmask, NULL);
+  return res;
 
 }
 
 int fuse_mnt_umount(const char *progname, const char *abs_mnt,
 		    const char *rel_mnt, int lazy)
 {
-	int res;
+  int res;
 
-	if (!mtab_needs_update(abs_mnt)) {
-		res = umount2(rel_mnt, lazy ? 2 : 0);
-		if (res == -1)
-			fprintf(stderr, "%s: failed to unmount %s: %s\n",
-				progname, abs_mnt, strerror(errno));
-		return res;
-	}
+  if (!mtab_needs_update(abs_mnt)) {
+    res = umount2(rel_mnt, lazy ? 2 : 0);
+    if (res == -1)
+      fprintf(stderr, "%s: failed to unmount %s: %s\n",
+              progname, abs_mnt, strerror(errno));
+    return res;
+  }
 
-	return exec_umount(progname, rel_mnt, lazy);
+  return exec_umount(progname, rel_mnt, lazy);
 }
 
 static int remove_mount(const char *progname, const char *mnt)
 {
-	int res;
-	int status;
-	sigset_t blockmask;
-	sigset_t oldmask;
+  int res;
+  int status;
+  sigset_t blockmask;
+  sigset_t oldmask;
 
-	sigemptyset(&blockmask);
-	sigaddset(&blockmask, SIGCHLD);
-	res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
-	if (res == -1) {
-		fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
-		return -1;
-	}
+  sigemptyset(&blockmask);
+  sigaddset(&blockmask, SIGCHLD);
+  res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
+  if (res == -1) {
+    fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
+    return -1;
+  }
 
-	res = fork();
-	if (res == -1) {
-		fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
-		goto out_restore;
-	}
-	if (res == 0) {
-		char *env = NULL;
+  res = fork();
+  if (res == -1) {
+    fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
+    goto out_restore;
+  }
+  if (res == 0) {
+    char *env = NULL;
 
-		sigprocmask(SIG_SETMASK, &oldmask, NULL);
-		setuid(geteuid());
-		execle("/bin/umount", "/bin/umount", "--no-canonicalize", "-i",
-		       "--fake", mnt, NULL, &env);
-		fprintf(stderr, "%s: failed to execute /bin/umount: %s\n",
-			progname, strerror(errno));
-		exit(1);
-	}
-	res = waitpid(res, &status, 0);
-	if (res == -1)
-		fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
+    sigprocmask(SIG_SETMASK, &oldmask, NULL);
+    setuid(geteuid());
+    execle("/bin/umount", "/bin/umount", "--no-canonicalize", "-i",
+           "--fake", mnt, NULL, &env);
+    fprintf(stderr, "%s: failed to execute /bin/umount: %s\n",
+            progname, strerror(errno));
+    exit(1);
+  }
+  res = waitpid(res, &status, 0);
+  if (res == -1)
+    fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
 
-	if (status != 0)
-		res = -1;
+  if (status != 0)
+    res = -1;
 
  out_restore:
-	sigprocmask(SIG_SETMASK, &oldmask, NULL);
-	return res;
+  sigprocmask(SIG_SETMASK, &oldmask, NULL);
+  return res;
 }
 
 int fuse_mnt_remove_mount(const char *progname, const char *mnt)
 {
-	if (!mtab_needs_update(mnt))
-		return 0;
+  if (!mtab_needs_update(mnt))
+    return 0;
 
-	return remove_mount(progname, mnt);
+  return remove_mount(progname, mnt);
 }
 
 char *fuse_mnt_resolve_path(const char *progname, const char *orig)
 {
-	char buf[PATH_MAX];
-	char *copy;
-	char *dst;
-	char *end;
-	char *lastcomp;
-	const char *toresolv;
+  char buf[PATH_MAX];
+  char *copy;
+  char *dst;
+  char *end;
+  char *lastcomp;
+  const char *toresolv;
 
-	if (!orig[0]) {
-		fprintf(stderr, "%s: invalid mountpoint '%s'\n", progname,
-			orig);
-		return NULL;
-	}
+  if (!orig[0]) {
+    fprintf(stderr, "%s: invalid mountpoint '%s'\n", progname,
+            orig);
+    return NULL;
+  }
 
-	copy = strdup(orig);
-	if (copy == NULL) {
-		fprintf(stderr, "%s: failed to allocate memory\n", progname);
-		return NULL;
-	}
+  copy = strdup(orig);
+  if (copy == NULL) {
+    fprintf(stderr, "%s: failed to allocate memory\n", progname);
+    return NULL;
+  }
 
-	toresolv = copy;
-	lastcomp = NULL;
-	for (end = copy + strlen(copy) - 1; end > copy && *end == '/'; end --);
-	if (end[0] != '/') {
-		char *tmp;
-		end[1] = '\0';
-		tmp = strrchr(copy, '/');
-		if (tmp == NULL) {
-			lastcomp = copy;
-			toresolv = ".";
-		} else {
-			lastcomp = tmp + 1;
-			if (tmp == copy)
-				toresolv = "/";
-		}
-		if (strcmp(lastcomp, ".") == 0 || strcmp(lastcomp, "..") == 0) {
-			lastcomp = NULL;
-			toresolv = copy;
-		}
-		else if (tmp)
-			tmp[0] = '\0';
-	}
-	if (realpath(toresolv, buf) == NULL) {
-		fprintf(stderr, "%s: bad mount point %s: %s\n", progname, orig,
-			strerror(errno));
-		free(copy);
-		return NULL;
-	}
-	if (lastcomp == NULL)
-		dst = strdup(buf);
-	else {
-		dst = (char *) malloc(strlen(buf) + 1 + strlen(lastcomp) + 1);
-		if (dst) {
-			unsigned buflen = strlen(buf);
-			if (buflen && buf[buflen-1] == '/')
-				sprintf(dst, "%s%s", buf, lastcomp);
-			else
-				sprintf(dst, "%s/%s", buf, lastcomp);
-		}
-	}
-	free(copy);
-	if (dst == NULL)
-		fprintf(stderr, "%s: failed to allocate memory\n", progname);
-	return dst;
+  toresolv = copy;
+  lastcomp = NULL;
+  for (end = copy + strlen(copy) - 1; end > copy && *end == '/'; end --);
+  if (end[0] != '/') {
+    char *tmp;
+    end[1] = '\0';
+    tmp = strrchr(copy, '/');
+    if (tmp == NULL) {
+      lastcomp = copy;
+      toresolv = ".";
+    } else {
+      lastcomp = tmp + 1;
+      if (tmp == copy)
+        toresolv = "/";
+    }
+    if (strcmp(lastcomp, ".") == 0 || strcmp(lastcomp, "..") == 0) {
+      lastcomp = NULL;
+      toresolv = copy;
+    }
+    else if (tmp)
+      tmp[0] = '\0';
+  }
+  if (realpath(toresolv, buf) == NULL) {
+    fprintf(stderr, "%s: bad mount point %s: %s\n", progname, orig,
+            strerror(errno));
+    free(copy);
+    return NULL;
+  }
+  if (lastcomp == NULL)
+    dst = strdup(buf);
+  else {
+    dst = (char *) malloc(strlen(buf) + 1 + strlen(lastcomp) + 1);
+    if (dst) {
+      unsigned buflen = strlen(buf);
+      if (buflen && buf[buflen-1] == '/')
+        sprintf(dst, "%s%s", buf, lastcomp);
+      else
+        sprintf(dst, "%s/%s", buf, lastcomp);
+    }
+  }
+  free(copy);
+  if (dst == NULL)
+    fprintf(stderr, "%s: failed to allocate memory\n", progname);
+  return dst;
 }
 
 int fuse_mnt_check_empty(const char *progname, const char *mnt,
 			 mode_t rootmode, off_t rootsize)
 {
-	int isempty = 1;
+  int isempty = 1;
 
-	if (S_ISDIR(rootmode)) {
-		struct dirent *ent;
-		DIR *dp = opendir(mnt);
-		if (dp == NULL) {
-			fprintf(stderr,
-				"%s: failed to open mountpoint for reading: %s\n",
-				progname, strerror(errno));
-			return -1;
-		}
-		while ((ent = readdir(dp)) != NULL) {
-			if (strcmp(ent->d_name, ".") != 0 &&
-			    strcmp(ent->d_name, "..") != 0) {
-				isempty = 0;
-				break;
-			}
-		}
-		closedir(dp);
-	} else if (rootsize)
-		isempty = 0;
+  if (S_ISDIR(rootmode)) {
+    struct dirent *ent;
+    DIR *dp = opendir(mnt);
+    if (dp == NULL) {
+      fprintf(stderr,
+              "%s: failed to open mountpoint for reading: %s\n",
+              progname, strerror(errno));
+      return -1;
+    }
+    while ((ent = readdir(dp)) != NULL) {
+      if (strcmp(ent->d_name, ".") != 0 &&
+          strcmp(ent->d_name, "..") != 0) {
+        isempty = 0;
+        break;
+      }
+    }
+    closedir(dp);
+  } else if (rootsize)
+    isempty = 0;
 
-	if (!isempty) {
-		fprintf(stderr, "%s: mountpoint is not empty\n", progname);
-		fprintf(stderr, "%s: if you are sure this is safe, use the 'nonempty' mount option\n", progname);
-		return -1;
-	}
-	return 0;
-}
-
-int fuse_mnt_check_fuseblk(void)
-{
-	char buf[256];
-	FILE *f = fopen("/proc/filesystems", "r");
-	if (!f)
-		return 1;
-
-	while (fgets(buf, sizeof(buf), f))
-		if (strstr(buf, "fuseblk\n")) {
-			fclose(f);
-			return 1;
-		}
-
-	fclose(f);
-	return 0;
+  if (!isempty) {
+    fprintf(stderr, "%s: mountpoint is not empty\n", progname);
+    fprintf(stderr, "%s: if you are sure this is safe, use the 'nonempty' mount option\n", progname);
+    return -1;
+  }
+  return 0;
 }

libfuse/lib/mount_util.h

@@ -16,4 +16,3 @@ int fuse_mnt_umount(const char *progname, const char *abs_mnt,
 char *fuse_mnt_resolve_path(const char *progname, const char *orig);
 int fuse_mnt_check_empty(const char *progname, const char *mnt,
 			 mode_t rootmode, off_t rootsize);
-int fuse_mnt_check_fuseblk(void);

libfuse/lib/sys.c

@@ -0,0 +1,48 @@
+#define _GNU_SOURCE
+
+#include <fcntl.h>
+#include <unistd.h>
+
+static
+int
+sys_get_pagesize_(void)
+{
+#ifdef _SC_PAGESIZE
+  return sysconf(_SC_PAGESIZE);
+#else
+  return getpagesize();
+#endif
+}
+
+int
+sys_get_pagesize(void)
+{
+  static int pagesize = 0;
+
+  if(pagesize == 0)
+    pagesize = sys_get_pagesize_();
+
+  return pagesize;
+}
+
+int
+sys_alloc_pipe(int pipe_[2],
+               int bufsize_)
+{
+#ifdef F_SETPIPE_SZ
+  int rv;
+
+  rv = pipe(pipe_);
+  if(rv == -1)
+    return -1;
+
+  rv = fcntl(pipe_[0],F_SETPIPE_SZ,bufsize_);
+  if(rv == -1)
+    return -1;
+
+  return rv;
+#else
+  errno = ENOSYS;
+  return -1;
+#endif
+}

libfuse/lib/sys.h

@@ -0,0 +1,4 @@
+#pragma once
+
+int sys_get_pagesize(void);
+int sys_alloc_pipe(int p[2], int bufsize);

libfuse/lib/ulockmgr.c

@@ -22,28 +22,28 @@
 #include <sys/wait.h>
 
 struct message {
-	unsigned intr : 1;
-	unsigned nofd : 1;
-	pthread_t thr;
-	int cmd;
-	int fd;
-	struct flock lock;
-	int error;
+  unsigned intr : 1;
+  unsigned nofd : 1;
+  pthread_t thr;
+  int cmd;
+  int fd;
+  struct flock lock;
+  int error;
 };
 
 struct fd_store {
-	struct fd_store *next;
-	int fd;
-	int inuse;
+  struct fd_store *next;
+  int fd;
+  int inuse;
 };
 
 struct owner {
-	struct owner *next;
-	struct owner *prev;
-	struct fd_store *fds;
-	void *id;
-	size_t id_len;
-	int cfd;
+  struct owner *next;
+  struct owner *prev;
+  struct fd_store *fds;
+  void *id;
+  size_t id_len;
+  int cfd;
 };
 
 static pthread_mutex_t ulockmgr_lock;
@@ -54,19 +54,19 @@ static struct owner owner_list = { .next = &owner_list, .prev = &owner_list };
 
 static void list_del_owner(struct owner *owner)
 {
-	struct owner *prev = owner->prev;
-	struct owner *next = owner->next;
-	prev->next = next;
-	next->prev = prev;
+  struct owner *prev = owner->prev;
+  struct owner *next = owner->next;
+  prev->next = next;
+  next->prev = prev;
 }
 
 static void list_add_owner(struct owner *owner, struct owner *next)
 {
-	struct owner *prev = next->prev;
-	owner->next = next;
-	owner->prev = prev;
-	prev->next = owner;
-	next->prev = owner;
+  struct owner *prev = next->prev;
+  owner->next = next;
+  owner->prev = prev;
+  prev->next = owner;
+  next->prev = owner;
 }
 
 /*
@@ -77,368 +77,368 @@ static void list_add_owner(struct owner *owner, struct owner *next)
  */
 static int do_recv(int sock, void *buf, size_t len, int flags)
 {
-	int res = recv(sock, buf, len, flags);
-	if (res == 0)
-		res = recv(sock, buf, len, flags);
+  int res = recv(sock, buf, len, flags);
+  if (res == 0)
+    res = recv(sock, buf, len, flags);
 
-	return res;
+  return res;
 }
 
 static int ulockmgr_send_message(int sock, void *buf, size_t buflen,
 				 int *fdp, int numfds)
 {
-	struct msghdr msg;
-	struct cmsghdr *p_cmsg;
-	struct iovec vec;
-	size_t cmsgbuf[CMSG_SPACE(sizeof(int) * MAX_SEND_FDS) / sizeof(size_t)];
-	int res;
+  struct msghdr msg;
+  struct cmsghdr *p_cmsg;
+  struct iovec vec;
+  size_t cmsgbuf[CMSG_SPACE(sizeof(int) * MAX_SEND_FDS) / sizeof(size_t)];
+  int res;
 
-	assert(numfds <= MAX_SEND_FDS);
-	msg.msg_control = cmsgbuf;
-	msg.msg_controllen = sizeof(cmsgbuf);
-	p_cmsg = CMSG_FIRSTHDR(&msg);
-	p_cmsg->cmsg_level = SOL_SOCKET;
-	p_cmsg->cmsg_type = SCM_RIGHTS;
-	p_cmsg->cmsg_len = CMSG_LEN(sizeof(int) * numfds);
-	memcpy(CMSG_DATA(p_cmsg), fdp, sizeof(int) * numfds);
-	msg.msg_controllen = p_cmsg->cmsg_len;
-	msg.msg_name = NULL;
-	msg.msg_namelen = 0;
-	msg.msg_iov = &vec;
-	msg.msg_iovlen = 1;
-	msg.msg_flags = 0;
-	vec.iov_base = buf;
-	vec.iov_len = buflen;
-	res = sendmsg(sock, &msg, MSG_NOSIGNAL);
-	if (res == -1) {
-		perror("libulockmgr: sendmsg");
-		return -1;
-	}
-	if ((size_t) res != buflen) {
-		fprintf(stderr, "libulockmgr: sendmsg short\n");
-		return -1;
-	}
-	return 0;
+  assert(numfds <= MAX_SEND_FDS);
+  msg.msg_control = cmsgbuf;
+  msg.msg_controllen = sizeof(cmsgbuf);
+  p_cmsg = CMSG_FIRSTHDR(&msg);
+  p_cmsg->cmsg_level = SOL_SOCKET;
+  p_cmsg->cmsg_type = SCM_RIGHTS;
+  p_cmsg->cmsg_len = CMSG_LEN(sizeof(int) * numfds);
+  memcpy(CMSG_DATA(p_cmsg), fdp, sizeof(int) * numfds);
+  msg.msg_controllen = p_cmsg->cmsg_len;
+  msg.msg_name = NULL;
+  msg.msg_namelen = 0;
+  msg.msg_iov = &vec;
+  msg.msg_iovlen = 1;
+  msg.msg_flags = 0;
+  vec.iov_base = buf;
+  vec.iov_len = buflen;
+  res = sendmsg(sock, &msg, MSG_NOSIGNAL);
+  if (res == -1) {
+    perror("libulockmgr: sendmsg");
+    return -1;
+  }
+  if ((size_t) res != buflen) {
+    fprintf(stderr, "libulockmgr: sendmsg short\n");
+    return -1;
+  }
+  return 0;
 }
 
 static int ulockmgr_start_daemon(void)
 {
-	int sv[2];
-	int res;
-	char tmp[64];
+  int sv[2];
+  int res;
+  char tmp[64];
 
-	res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
-	if (res == -1) {
-		perror("libulockmgr: socketpair");
-		return -1;
-	}
-	snprintf(tmp, sizeof(tmp), "exec ulockmgr_server %i", sv[0]);
-	res = system(tmp);
-	close(sv[0]);
-	if (res == -1 || !WIFEXITED(res) || WEXITSTATUS(res) != 0) {
-		close(sv[1]);
-		return -1;
-	}
-	ulockmgr_cfd = sv[1];
-	return 0;
+  res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
+  if (res == -1) {
+    perror("libulockmgr: socketpair");
+    return -1;
+  }
+  snprintf(tmp, sizeof(tmp), "exec ulockmgr_server %i", sv[0]);
+  res = system(tmp);
+  close(sv[0]);
+  if (res == -1 || !WIFEXITED(res) || WEXITSTATUS(res) != 0) {
+    close(sv[1]);
+    return -1;
+  }
+  ulockmgr_cfd = sv[1];
+  return 0;
 }
 
 static struct owner *ulockmgr_new_owner(const void *id, size_t id_len)
 {
-	int sv[2];
-	int res;
-	char c = 'm';
-	struct owner *o;
+  int sv[2];
+  int res;
+  char c = 'm';
+  struct owner *o;
 
-	if (ulockmgr_cfd == -1 && ulockmgr_start_daemon() == -1)
-		return NULL;
+  if (ulockmgr_cfd == -1 && ulockmgr_start_daemon() == -1)
+    return NULL;
 
-	o = calloc(1, sizeof(struct owner) + id_len);
-	if (!o) {
-		fprintf(stderr, "libulockmgr: failed to allocate memory\n");
-		return NULL;
-	}
-	o->id = o + 1;
-	o->id_len = id_len;
-	res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
-	if (res == -1) {
-		perror("libulockmgr: socketpair");
-		goto out_free;
-	}
-	res = ulockmgr_send_message(ulockmgr_cfd, &c, sizeof(c), &sv[0], 1);
-	close(sv[0]);
-	if (res == -1) {
-		close(ulockmgr_cfd);
-		ulockmgr_cfd = -1;
-		goto out_close;
-	}
+  o = calloc(1, sizeof(struct owner) + id_len);
+  if (!o) {
+    fprintf(stderr, "libulockmgr: failed to allocate memory\n");
+    return NULL;
+  }
+  o->id = o + 1;
+  o->id_len = id_len;
+  res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
+  if (res == -1) {
+    perror("libulockmgr: socketpair");
+    goto out_free;
+  }
+  res = ulockmgr_send_message(ulockmgr_cfd, &c, sizeof(c), &sv[0], 1);
+  close(sv[0]);
+  if (res == -1) {
+    close(ulockmgr_cfd);
+    ulockmgr_cfd = -1;
+    goto out_close;
+  }
 
-	o->cfd = sv[1];
-	memcpy(o->id, id, id_len);
-	list_add_owner(o, &owner_list);
+  o->cfd = sv[1];
+  memcpy(o->id, id, id_len);
+  list_add_owner(o, &owner_list);
 
-	return o;
+  return o;
 
-out_close:
-	close(sv[1]);
-out_free:
-	free(o);
-	return NULL;
+ out_close:
+  close(sv[1]);
+ out_free:
+  free(o);
+  return NULL;
 }
 
 static int ulockmgr_send_request(struct message *msg, const void *id,
 				 size_t id_len)
 {
-	int sv[2];
-	int cfd;
-	struct owner *o;
-	struct fd_store *f = NULL;
-	struct fd_store *newf = NULL;
-	struct fd_store **fp;
-	int fd = msg->fd;
-	int cmd = msg->cmd;
-	int res;
-	int unlockall = (cmd == F_SETLK && msg->lock.l_type == F_UNLCK &&
-			 msg->lock.l_start == 0 && msg->lock.l_len == 0);
+  int sv[2];
+  int cfd;
+  struct owner *o;
+  struct fd_store *f = NULL;
+  struct fd_store *newf = NULL;
+  struct fd_store **fp;
+  int fd = msg->fd;
+  int cmd = msg->cmd;
+  int res;
+  int unlockall = (cmd == F_SETLK && msg->lock.l_type == F_UNLCK &&
+                   msg->lock.l_start == 0 && msg->lock.l_len == 0);
 
-	for (o = owner_list.next; o != &owner_list; o = o->next)
-		if (o->id_len == id_len && memcmp(o->id, id, id_len) == 0)
-			break;
+  for (o = owner_list.next; o != &owner_list; o = o->next)
+    if (o->id_len == id_len && memcmp(o->id, id, id_len) == 0)
+      break;
 
-	if (o == &owner_list)
-		o = NULL;
+  if (o == &owner_list)
+    o = NULL;
 
-	if (!o && cmd != F_GETLK && msg->lock.l_type != F_UNLCK)
-		o = ulockmgr_new_owner(id, id_len);
+  if (!o && cmd != F_GETLK && msg->lock.l_type != F_UNLCK)
+    o = ulockmgr_new_owner(id, id_len);
 
-	if (!o) {
-		if (cmd == F_GETLK) {
-			res = fcntl(msg->fd, F_GETLK, &msg->lock);
-			return (res == -1) ? -errno : 0;
-		} else if (msg->lock.l_type == F_UNLCK)
-			return 0;
-		else
-			return -ENOLCK;
-	}
+  if (!o) {
+    if (cmd == F_GETLK) {
+      res = fcntl(msg->fd, F_GETLK, &msg->lock);
+      return (res == -1) ? -errno : 0;
+    } else if (msg->lock.l_type == F_UNLCK)
+      return 0;
+    else
+      return -ENOLCK;
+  }
 
-	if (unlockall)
-		msg->nofd = 1;
-	else {
-		for (fp = &o->fds; *fp; fp = &(*fp)->next) {
-			f = *fp;
-			if (f->fd == fd) {
-				msg->nofd = 1;
-				break;
-			}
-		}
-	}
+  if (unlockall)
+    msg->nofd = 1;
+  else {
+    for (fp = &o->fds; *fp; fp = &(*fp)->next) {
+      f = *fp;
+      if (f->fd == fd) {
+        msg->nofd = 1;
+        break;
+      }
+    }
+  }
 
-	if (!msg->nofd) {
-		newf = f = calloc(1, sizeof(struct fd_store));
-		if (!f) {
-			fprintf(stderr, "libulockmgr: failed to allocate memory\n");
-			return -ENOLCK;
-		}
-	}
+  if (!msg->nofd) {
+    newf = f = calloc(1, sizeof(struct fd_store));
+    if (!f) {
+      fprintf(stderr, "libulockmgr: failed to allocate memory\n");
+      return -ENOLCK;
+    }
+  }
 
-	res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
-	if (res == -1) {
-		perror("libulockmgr: socketpair");
-		free(newf);
-		return -ENOLCK;
-	}
+  res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
+  if (res == -1) {
+    perror("libulockmgr: socketpair");
+    free(newf);
+    return -ENOLCK;
+  }
 
-	cfd = sv[1];
-	sv[1] = msg->fd;
-	res = ulockmgr_send_message(o->cfd, msg, sizeof(struct message), sv,
-				    msg->nofd ? 1 : 2);
-	close(sv[0]);
-	if (res == -1) {
-		free(newf);
-		close(cfd);
-		return -EIO;
-	}
+  cfd = sv[1];
+  sv[1] = msg->fd;
+  res = ulockmgr_send_message(o->cfd, msg, sizeof(struct message), sv,
+                              msg->nofd ? 1 : 2);
+  close(sv[0]);
+  if (res == -1) {
+    free(newf);
+    close(cfd);
+    return -EIO;
+  }
 
-	if (newf) {
-		newf->fd = msg->fd;
-		newf->next = o->fds;
-		o->fds = newf;
-	}
-	if (f)
-		f->inuse++;
+  if (newf) {
+    newf->fd = msg->fd;
+    newf->next = o->fds;
+    o->fds = newf;
+  }
+  if (f)
+    f->inuse++;
 
-	res = do_recv(cfd, msg, sizeof(struct message), MSG_WAITALL);
-	if (res == -1) {
-		perror("libulockmgr: recv");
-		msg->error = EIO;
-	} else if (res != sizeof(struct message)) {
-		fprintf(stderr, "libulockmgr: recv short\n");
-		msg->error = EIO;
-	} else if (cmd == F_SETLKW && msg->error == EAGAIN) {
-		pthread_mutex_unlock(&ulockmgr_lock);
-		while (1) {
-			sigset_t old;
-			sigset_t unblock;
-			int errno_save;
+  res = do_recv(cfd, msg, sizeof(struct message), MSG_WAITALL);
+  if (res == -1) {
+    perror("libulockmgr: recv");
+    msg->error = EIO;
+  } else if (res != sizeof(struct message)) {
+    fprintf(stderr, "libulockmgr: recv short\n");
+    msg->error = EIO;
+  } else if (cmd == F_SETLKW && msg->error == EAGAIN) {
+    pthread_mutex_unlock(&ulockmgr_lock);
+    while (1) {
+      sigset_t old;
+      sigset_t unblock;
+      int errno_save;
 
-			sigemptyset(&unblock);
-			sigaddset(&unblock, SIGUSR1);
-			pthread_sigmask(SIG_UNBLOCK, &unblock, &old);
-			res = do_recv(cfd, msg, sizeof(struct message),
-				      MSG_WAITALL);
-			errno_save = errno;
-			pthread_sigmask(SIG_SETMASK, &old, NULL);
-			if (res == sizeof(struct message))
-				break;
-			else if (res >= 0) {
-				fprintf(stderr, "libulockmgr: recv short\n");
-				msg->error = EIO;
-				break;
-			} else if (errno_save != EINTR) {
-				errno = errno_save;
-				perror("libulockmgr: recv");
-				msg->error = EIO;
-				break;
-			}
-			msg->intr = 1;
-			res = send(o->cfd, msg, sizeof(struct message),
-				   MSG_NOSIGNAL);
-			if (res == -1) {
-				perror("libulockmgr: send");
-				msg->error = EIO;
-				break;
-			}
-			if (res != sizeof(struct message)) {
-				fprintf(stderr, "libulockmgr: send short\n");
-				msg->error = EIO;
-				break;
-			}
-		}
-		pthread_mutex_lock(&ulockmgr_lock);
+      sigemptyset(&unblock);
+      sigaddset(&unblock, SIGUSR1);
+      pthread_sigmask(SIG_UNBLOCK, &unblock, &old);
+      res = do_recv(cfd, msg, sizeof(struct message),
+                    MSG_WAITALL);
+      errno_save = errno;
+      pthread_sigmask(SIG_SETMASK, &old, NULL);
+      if (res == sizeof(struct message))
+        break;
+      else if (res >= 0) {
+        fprintf(stderr, "libulockmgr: recv short\n");
+        msg->error = EIO;
+        break;
+      } else if (errno_save != EINTR) {
+        errno = errno_save;
+        perror("libulockmgr: recv");
+        msg->error = EIO;
+        break;
+      }
+      msg->intr = 1;
+      res = send(o->cfd, msg, sizeof(struct message),
+                 MSG_NOSIGNAL);
+      if (res == -1) {
+        perror("libulockmgr: send");
+        msg->error = EIO;
+        break;
+      }
+      if (res != sizeof(struct message)) {
+        fprintf(stderr, "libulockmgr: send short\n");
+        msg->error = EIO;
+        break;
+      }
+    }
+    pthread_mutex_lock(&ulockmgr_lock);
 
-	}
-	if (f)
-		f->inuse--;
-	close(cfd);
-	if (unlockall) {
-		for (fp = &o->fds; *fp;) {
-			f = *fp;
-			if (f->fd == fd && !f->inuse) {
-				*fp = f->next;
-				free(f);
-			} else
-				fp = &f->next;
-		}
-		if (!o->fds) {
-			list_del_owner(o);
-			close(o->cfd);
-			free(o);
-		}
-		/* Force OK on unlock-all, since it _will_ succeed once the
-		   owner is deleted */
-		msg->error = 0;
-	}
+  }
+  if (f)
+    f->inuse--;
+  close(cfd);
+  if (unlockall) {
+    for (fp = &o->fds; *fp;) {
+      f = *fp;
+      if (f->fd == fd && !f->inuse) {
+        *fp = f->next;
+        free(f);
+      } else
+        fp = &f->next;
+    }
+    if (!o->fds) {
+      list_del_owner(o);
+      close(o->cfd);
+      free(o);
+    }
+    /* Force OK on unlock-all, since it _will_ succeed once the
+       owner is deleted */
+    msg->error = 0;
+  }
 
-	return -msg->error;
+  return -msg->error;
 }
 
 #ifdef DEBUG
 static uint32_t owner_hash(const unsigned char *id, size_t id_len)
 {
-	uint32_t h = 0;
-	size_t i;
-	for (i = 0; i < id_len; i++)
-		h = ((h << 8) | (h >> 24)) ^ id[i];
+  uint32_t h = 0;
+  size_t i;
+  for (i = 0; i < id_len; i++)
+    h = ((h << 8) | (h >> 24)) ^ id[i];
 
-	return h;
+  return h;
 }
 #endif
 
 static int ulockmgr_canonicalize(int fd, struct flock *lock)
 {
-	off_t offset;
-	if (lock->l_whence == SEEK_CUR) {
-		offset = lseek(fd, 0, SEEK_CUR);
-		if (offset == (off_t) -1)
-			return -errno;
-	} else if (lock->l_whence == SEEK_END) {
-		struct stat stbuf;
-		int res = fstat(fd, &stbuf);
-		if (res == -1)
-			return -errno;
+  off_t offset;
+  if (lock->l_whence == SEEK_CUR) {
+    offset = lseek(fd, 0, SEEK_CUR);
+    if (offset == (off_t) -1)
+      return -errno;
+  } else if (lock->l_whence == SEEK_END) {
+    struct stat stbuf;
+    int res = fstat(fd, &stbuf);
+    if (res == -1)
+      return -errno;
 
-		offset = stbuf.st_size;
-	} else
-		offset = 0;
+    offset = stbuf.st_size;
+  } else
+    offset = 0;
 
-	lock->l_whence = SEEK_SET;
-	lock->l_start += offset;
+  lock->l_whence = SEEK_SET;
+  lock->l_start += offset;
 
-	if (lock->l_start < 0)
-		return -EINVAL;
+  if (lock->l_start < 0)
+    return -EINVAL;
 
-	if (lock->l_len < 0) {
-		lock->l_start += lock->l_len;
-		if (lock->l_start < 0)
-			return -EINVAL;
-		lock->l_len = -lock->l_len;
-	}
-	if (lock->l_len && lock->l_start + lock->l_len - 1 < 0)
-		return -EINVAL;
+  if (lock->l_len < 0) {
+    lock->l_start += lock->l_len;
+    if (lock->l_start < 0)
+      return -EINVAL;
+    lock->l_len = -lock->l_len;
+  }
+  if (lock->l_len && lock->l_start + lock->l_len - 1 < 0)
+    return -EINVAL;
 
-	return 0;
+  return 0;
 }
 
 int ulockmgr_op(int fd, int cmd, struct flock *lock, const void *owner,
 		size_t owner_len)
 {
-	int err;
-	struct message msg;
-	sigset_t old;
-	sigset_t block;
+  int err;
+  struct message msg;
+  sigset_t old;
+  sigset_t block;
 
-	if (cmd != F_GETLK && cmd != F_SETLK && cmd != F_SETLKW)
-		return -EINVAL;
+  if (cmd != F_GETLK && cmd != F_SETLK && cmd != F_SETLKW)
+    return -EINVAL;
 
-	if (lock->l_type != F_RDLCK && lock->l_type != F_WRLCK &&
-	    lock->l_type != F_UNLCK)
-		return -EINVAL;
+  if (lock->l_type != F_RDLCK && lock->l_type != F_WRLCK &&
+      lock->l_type != F_UNLCK)
+    return -EINVAL;
 
-	if (lock->l_whence != SEEK_SET && lock->l_whence != SEEK_CUR &&
-	    lock->l_whence != SEEK_END)
-		return -EINVAL;
+  if (lock->l_whence != SEEK_SET && lock->l_whence != SEEK_CUR &&
+      lock->l_whence != SEEK_END)
+    return -EINVAL;
 
 #ifdef DEBUG
-	fprintf(stderr, "libulockmgr: %i %i %i %lli %lli own: 0x%08x\n",
-		cmd, lock->l_type, lock->l_whence, lock->l_start, lock->l_len,
-		owner_hash(owner, owner_len));
+  fprintf(stderr, "libulockmgr: %i %i %i %lli %lli own: 0x%08x\n",
+          cmd, lock->l_type, lock->l_whence, lock->l_start, lock->l_len,
+          owner_hash(owner, owner_len));
 #endif
 
-	/* Unlock should never block anyway */
-	if (cmd == F_SETLKW && lock->l_type == F_UNLCK)
-		cmd = F_SETLK;
+  /* Unlock should never block anyway */
+  if (cmd == F_SETLKW && lock->l_type == F_UNLCK)
+    cmd = F_SETLK;
 
-	memset(&msg, 0, sizeof(struct message));
-	msg.cmd = cmd;
-	msg.fd = fd;
-	msg.lock = *lock;
-	err = ulockmgr_canonicalize(fd, &msg.lock);
-	if (err)
-		return err;
+  memset(&msg, 0, sizeof(struct message));
+  msg.cmd = cmd;
+  msg.fd = fd;
+  msg.lock = *lock;
+  err = ulockmgr_canonicalize(fd, &msg.lock);
+  if (err)
+    return err;
 
-	sigemptyset(&block);
-	sigaddset(&block, SIGUSR1);
-	pthread_sigmask(SIG_BLOCK, &block, &old);
-	pthread_mutex_lock(&ulockmgr_lock);
-	err = ulockmgr_send_request(&msg, owner, owner_len);
-	pthread_mutex_unlock(&ulockmgr_lock);
-	pthread_sigmask(SIG_SETMASK, &old, NULL);
-	if (!err && cmd == F_GETLK) {
-		if (msg.lock.l_type == F_UNLCK)
-			lock->l_type = F_UNLCK;
-		else
-			*lock = msg.lock;
-	}
+  sigemptyset(&block);
+  sigaddset(&block, SIGUSR1);
+  pthread_sigmask(SIG_BLOCK, &block, &old);
+  pthread_mutex_lock(&ulockmgr_lock);
+  err = ulockmgr_send_request(&msg, owner, owner_len);
+  pthread_mutex_unlock(&ulockmgr_lock);
+  pthread_sigmask(SIG_SETMASK, &old, NULL);
+  if (!err && cmd == F_GETLK) {
+    if (msg.lock.l_type == F_UNLCK)
+      lock->l_type = F_UNLCK;
+    else
+      *lock = msg.lock;
+  }
 
-	return err;
+  return err;
 }

libfuse/util/mount.mergerfs.c

@@ -16,216 +16,212 @@ static char *progname;
 
 static char *xstrdup(const char *s)
 {
-	char *t = strdup(s);
-	if (!t) {
-		fprintf(stderr, "%s: failed to allocate memory\n", progname);
-		exit(1);
-	}
-	return t;
+  char *t = strdup(s);
+  if (!t) {
+    fprintf(stderr, "%s: failed to allocate memory\n", progname);
+    exit(1);
+  }
+  return t;
 }
 
 static void *xrealloc(void *oldptr, size_t size)
 {
-	void *ptr = realloc(oldptr, size);
-	if (!ptr) {
-		fprintf(stderr, "%s: failed to allocate memory\n", progname);
-		exit(1);
-	}
-	return ptr;
+  void *ptr = realloc(oldptr, size);
+  if (!ptr) {
+    fprintf(stderr, "%s: failed to allocate memory\n", progname);
+    exit(1);
+  }
+  return ptr;
 }
 
 static void add_arg(char **cmdp, const char *opt)
 {
-	size_t optlen = strlen(opt);
-	size_t cmdlen = *cmdp ? strlen(*cmdp) : 0;
-	char *cmd = xrealloc(*cmdp, cmdlen + optlen * 4 + 4);
-	char *s;
-	s = cmd + cmdlen;
-	if (*cmdp)
-		*s++ = ' ';
+  size_t optlen = strlen(opt);
+  size_t cmdlen = *cmdp ? strlen(*cmdp) : 0;
+  char *cmd = xrealloc(*cmdp, cmdlen + optlen * 4 + 4);
+  char *s;
+  s = cmd + cmdlen;
+  if (*cmdp)
+    *s++ = ' ';
 
-	*s++ = '\'';
-	for (; *opt; opt++) {
-		if (*opt == '\'') {
-			*s++ = '\'';
-			*s++ = '\\';
-			*s++ = '\'';
-			*s++ = '\'';
-		} else
-			*s++ = *opt;
-	}
-	*s++ = '\'';
-	*s = '\0';
-	*cmdp = cmd;
+  *s++ = '\'';
+  for (; *opt; opt++) {
+    if (*opt == '\'') {
+      *s++ = '\'';
+      *s++ = '\\';
+      *s++ = '\'';
+      *s++ = '\'';
+    } else
+      *s++ = *opt;
+  }
+  *s++ = '\'';
+  *s = '\0';
+  *cmdp = cmd;
 }
 
 static char *add_option(const char *opt, char *options)
 {
-	int oldlen = options ? strlen(options) : 0;
+  int oldlen = options ? strlen(options) : 0;
 
-	options = xrealloc(options, oldlen + 1 + strlen(opt) + 1);
-	if (!oldlen)
-		strcpy(options, opt);
-	else {
-		strcat(options, ",");
-		strcat(options, opt);
-	}
-	return options;
+  options = xrealloc(options, oldlen + 1 + strlen(opt) + 1);
+  if (!oldlen)
+    strcpy(options, opt);
+  else {
+    strcat(options, ",");
+    strcat(options, opt);
+  }
+  return options;
 }
 
 int main(int argc, char *argv[])
 {
-	char *type = NULL;
-	char *source;
-	const char *mountpoint;
-	char *basename;
-	char *options = NULL;
-	char *command = NULL;
-	char *setuid = NULL;
-	int i;
-	int dev = 1;
-	int suid = 1;
+  char *type = NULL;
+  char *source;
+  const char *mountpoint;
+  char *basename;
+  char *options = NULL;
+  char *command = NULL;
+  char *setuid = NULL;
+  int i;
+  int dev = 1;
+  int suid = 1;
 
-	progname = argv[0];
-	basename = strrchr(argv[0], '/');
-	if (basename)
-		basename++;
-	else
-		basename = argv[0];
+  progname = argv[0];
+  basename = strrchr(argv[0], '/');
+  if (basename)
+    basename++;
+  else
+    basename = argv[0];
 
-        type = "mergerfs";
-	if (strncmp(basename, "mount.fuse.", 11) == 0)
-		type = basename + 11;
-	if (strncmp(basename, "mount.fuseblk.", 14) == 0)
-		type = basename + 14;
+  type = "mergerfs";
+  if (strncmp(basename, "mount.fuse.", 11) == 0)
+    type = basename + 11;
 
-	if (type && !type[0])
-		type = NULL;
+  if (type && !type[0])
+    type = NULL;
 
-	if (argc < 3) {
-		fprintf(stderr,
-			"usage: %s %s destination [-t type] [-o opt[,opts...]]\n",
-			progname, type ? "source" : "type#[source]");
-		exit(1);
-	}
+  if (argc < 3) {
+    fprintf(stderr,
+            "usage: %s %s destination [-t type] [-o opt[,opts...]]\n",
+            progname, type ? "source" : "type#[source]");
+    exit(1);
+  }
 
-	source = argv[1];
-	if (!source[0])
-		source = NULL;
+  source = argv[1];
+  if (!source[0])
+    source = NULL;
 
-	mountpoint = argv[2];
+  mountpoint = argv[2];
 
-	for (i = 3; i < argc; i++) {
-		if (strcmp(argv[i], "-v") == 0) {
-			continue;
-		} else if (strcmp(argv[i], "-t") == 0) {
-			i++;
+  for (i = 3; i < argc; i++) {
+    if (strcmp(argv[i], "-v") == 0) {
+      continue;
+    } else if (strcmp(argv[i], "-t") == 0) {
+      i++;
 
-			if (i == argc) {
-				fprintf(stderr,
-					"%s: missing argument to option '-t'\n",
-					progname);
-				exit(1);
-			}
-			type = argv[i];
-			if (strncmp(type, "fuse.", 5) == 0)
-				type += 5;
-			else if (strncmp(type, "fuseblk.", 8) == 0)
-				type += 8;
+      if (i == argc) {
+        fprintf(stderr,
+                "%s: missing argument to option '-t'\n",
+                progname);
+        exit(1);
+      }
+      type = argv[i];
+      if (strncmp(type, "fuse.", 5) == 0)
+        type += 5;
 
-			if (!type[0]) {
-				fprintf(stderr,
-					"%s: empty type given as argument to option '-t'\n",
-					progname);
-				exit(1);
-			}
-		} else	if (strcmp(argv[i], "-o") == 0) {
-			char *opts;
-			char *opt;
-			i++;
-			if (i == argc)
-				break;
+      if (!type[0]) {
+        fprintf(stderr,
+                "%s: empty type given as argument to option '-t'\n",
+                progname);
+        exit(1);
+      }
+    } else	if (strcmp(argv[i], "-o") == 0) {
+      char *opts;
+      char *opt;
+      i++;
+      if (i == argc)
+        break;
 
-			opts = xstrdup(argv[i]);
-			opt = strtok(opts, ",");
-			while (opt) {
-				int j;
-				int ignore = 0;
-				const char *ignore_opts[] = { "",
-							      "user",
-							      "nouser",
-							      "users",
-							      "auto",
-							      "noauto",
-							      "_netdev",
-							      NULL};
-				if (strncmp(opt, "setuid=", 7) == 0) {
-					setuid = xstrdup(opt + 7);
-					ignore = 1;
-				}
-				for (j = 0; ignore_opts[j]; j++)
-					if (strcmp(opt, ignore_opts[j]) == 0)
-						ignore = 1;
+      opts = xstrdup(argv[i]);
+      opt = strtok(opts, ",");
+      while (opt) {
+        int j;
+        int ignore = 0;
+        const char *ignore_opts[] = { "",
+                                      "user",
+                                      "nouser",
+                                      "users",
+                                      "auto",
+                                      "noauto",
+                                      "_netdev",
+                                      NULL};
+        if (strncmp(opt, "setuid=", 7) == 0) {
+          setuid = xstrdup(opt + 7);
+          ignore = 1;
+        }
+        for (j = 0; ignore_opts[j]; j++)
+          if (strcmp(opt, ignore_opts[j]) == 0)
+            ignore = 1;
 
-				if (!ignore) {
-					if (strcmp(opt, "nodev") == 0)
-						dev = 0;
-					else if (strcmp(opt, "nosuid") == 0)
-						suid = 0;
+        if (!ignore) {
+          if (strcmp(opt, "nodev") == 0)
+            dev = 0;
+          else if (strcmp(opt, "nosuid") == 0)
+            suid = 0;
 
-					options = add_option(opt, options);
-				}
-				opt = strtok(NULL, ",");
-			}
-		}
-	}
+          options = add_option(opt, options);
+        }
+        opt = strtok(NULL, ",");
+      }
+    }
+  }
 
-	if (dev)
-		options = add_option("dev", options);
-	if (suid)
-		options = add_option("suid", options);
+  if (dev)
+    options = add_option("dev", options);
+  if (suid)
+    options = add_option("suid", options);
 
-	if (!type) {
-		if (source) {
-			type = xstrdup(source);
-			source = strchr(type, '#');
-			if (source)
-				*source++ = '\0';
-			if (!type[0]) {
-				fprintf(stderr, "%s: empty filesystem type\n",
-					progname);
-				exit(1);
-			}
-		} else {
-			fprintf(stderr, "%s: empty source\n", progname);
-			exit(1);
-		}
-	}
+  if (!type) {
+    if (source) {
+      type = xstrdup(source);
+      source = strchr(type, '#');
+      if (source)
+        *source++ = '\0';
+      if (!type[0]) {
+        fprintf(stderr, "%s: empty filesystem type\n",
+                progname);
+        exit(1);
+      }
+    } else {
+      fprintf(stderr, "%s: empty source\n", progname);
+      exit(1);
+    }
+  }
 
-	add_arg(&command, type);
-	if (source)
-		add_arg(&command, source);
-	add_arg(&command, mountpoint);
-	if (options) {
-		add_arg(&command, "-o");
-		add_arg(&command, options);
-	}
+  add_arg(&command, type);
+  if (source)
+    add_arg(&command, source);
+  add_arg(&command, mountpoint);
+  if (options) {
+    add_arg(&command, "-o");
+    add_arg(&command, options);
+  }
 
-	if (setuid && setuid[0]) {
-		char *sucommand = command;
-		command = NULL;
-		add_arg(&command, "su");
-		add_arg(&command, "-");
-		add_arg(&command, setuid);
-		add_arg(&command, "-c");
-		add_arg(&command, sucommand);
-	} else if (!getenv("HOME")) {
-		/* Hack to make filesystems work in the boot environment */
-		setenv("HOME", "/root", 0);
-	}
+  if (setuid && setuid[0]) {
+    char *sucommand = command;
+    command = NULL;
+    add_arg(&command, "su");
+    add_arg(&command, "-");
+    add_arg(&command, setuid);
+    add_arg(&command, "-c");
+    add_arg(&command, sucommand);
+  } else if (!getenv("HOME")) {
+    /* Hack to make filesystems work in the boot environment */
+    setenv("HOME", "/root", 0);
+  }
 
-	execl("/bin/sh", "/bin/sh", "-c", command, NULL);
-	fprintf(stderr, "%s: failed to execute /bin/sh: %s\n", progname,
-		strerror(errno));
-	return 1;
+  execl("/bin/sh", "/bin/sh", "-c", command, NULL);
+  fprintf(stderr, "%s: failed to execute /bin/sh: %s\n", progname,
+          strerror(errno));
+  return 1;
 }

libfuse/util/mount_util.c

@@ -31,333 +31,316 @@
 #else
 static int mtab_needs_update(const char *mnt)
 {
-	int res;
-	struct stat stbuf;
+  int res;
+  struct stat stbuf;
 
-	/* If mtab is within new mount, don't touch it */
-	if (strncmp(mnt, _PATH_MOUNTED, strlen(mnt)) == 0 &&
-	    _PATH_MOUNTED[strlen(mnt)] == '/')
-		return 0;
+  /* If mtab is within new mount, don't touch it */
+  if (strncmp(mnt, _PATH_MOUNTED, strlen(mnt)) == 0 &&
+      _PATH_MOUNTED[strlen(mnt)] == '/')
+    return 0;
 
-	/*
-	 * Skip mtab update if /etc/mtab:
-	 *
-	 *  - doesn't exist,
-	 *  - is a symlink,
-	 *  - is on a read-only filesystem.
-	 */
-	res = lstat(_PATH_MOUNTED, &stbuf);
-	if (res == -1) {
-		if (errno == ENOENT)
-			return 0;
-	} else {
-		uid_t ruid;
-		int err;
+  /*
+   * Skip mtab update if /etc/mtab:
+   *
+   *  - doesn't exist,
+   *  - is a symlink,
+   *  - is on a read-only filesystem.
+   */
+  res = lstat(_PATH_MOUNTED, &stbuf);
+  if (res == -1) {
+    if (errno == ENOENT)
+      return 0;
+  } else {
+    uid_t ruid;
+    int err;
 
-		if (S_ISLNK(stbuf.st_mode))
-			return 0;
+    if (S_ISLNK(stbuf.st_mode))
+      return 0;
 
-		ruid = getuid();
-		if (ruid != 0)
-			setreuid(0, -1);
+    ruid = getuid();
+    if (ruid != 0)
+      setreuid(0, -1);
 
-		res = access(_PATH_MOUNTED, W_OK);
-		err = (res == -1) ? errno : 0;
-		if (ruid != 0)
-			setreuid(ruid, -1);
+    res = access(_PATH_MOUNTED, W_OK);
+    err = (res == -1) ? errno : 0;
+    if (ruid != 0)
+      setreuid(ruid, -1);
 
-		if (err == EROFS)
-			return 0;
-	}
+    if (err == EROFS)
+      return 0;
+  }
 
-	return 1;
+  return 1;
 }
 #endif /* __NetBSD__ */
 
 static int add_mount(const char *progname, const char *fsname,
-		       const char *mnt, const char *type, const char *opts)
+                     const char *mnt, const char *type, const char *opts)
 {
-	int res;
-	int status;
-	sigset_t blockmask;
-	sigset_t oldmask;
+  int res;
+  int status;
+  sigset_t blockmask;
+  sigset_t oldmask;
 
-	sigemptyset(&blockmask);
-	sigaddset(&blockmask, SIGCHLD);
-	res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
-	if (res == -1) {
-		fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
-		return -1;
-	}
+  sigemptyset(&blockmask);
+  sigaddset(&blockmask, SIGCHLD);
+  res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
+  if (res == -1) {
+    fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
+    return -1;
+  }
 
-	res = fork();
-	if (res == -1) {
-		fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
-		goto out_restore;
-	}
-	if (res == 0) {
-		char *env = NULL;
+  res = fork();
+  if (res == -1) {
+    fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
+    goto out_restore;
+  }
+  if (res == 0) {
+    char *env = NULL;
 
-		sigprocmask(SIG_SETMASK, &oldmask, NULL);
-		setuid(geteuid());
-		execle("/bin/mount", "/bin/mount", "--no-canonicalize", "-i",
-		       "-f", "-t", type, "-o", opts, fsname, mnt, NULL, &env);
-		fprintf(stderr, "%s: failed to execute /bin/mount: %s\n",
-			progname, strerror(errno));
-		exit(1);
-	}
-	res = waitpid(res, &status, 0);
-	if (res == -1)
-		fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
+    sigprocmask(SIG_SETMASK, &oldmask, NULL);
+    setuid(geteuid());
+    execle("/bin/mount", "/bin/mount", "--no-canonicalize", "-i",
+           "-f", "-t", type, "-o", opts, fsname, mnt, NULL, &env);
+    fprintf(stderr, "%s: failed to execute /bin/mount: %s\n",
+            progname, strerror(errno));
+    exit(1);
+  }
+  res = waitpid(res, &status, 0);
+  if (res == -1)
+    fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
 
-	if (status != 0)
-		res = -1;
+  if (status != 0)
+    res = -1;
 
  out_restore:
-	sigprocmask(SIG_SETMASK, &oldmask, NULL);
+  sigprocmask(SIG_SETMASK, &oldmask, NULL);
 
-	return res;
+  return res;
 }
 
 int fuse_mnt_add_mount(const char *progname, const char *fsname,
 		       const char *mnt, const char *type, const char *opts)
 {
-	if (!mtab_needs_update(mnt))
-		return 0;
+  if (!mtab_needs_update(mnt))
+    return 0;
 
-	return add_mount(progname, fsname, mnt, type, opts);
+  return add_mount(progname, fsname, mnt, type, opts);
 }
 
 static int exec_umount(const char *progname, const char *rel_mnt, int lazy)
 {
-	int res;
-	int status;
-	sigset_t blockmask;
-	sigset_t oldmask;
+  int res;
+  int status;
+  sigset_t blockmask;
+  sigset_t oldmask;
 
-	sigemptyset(&blockmask);
-	sigaddset(&blockmask, SIGCHLD);
-	res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
-	if (res == -1) {
-		fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
-		return -1;
-	}
+  sigemptyset(&blockmask);
+  sigaddset(&blockmask, SIGCHLD);
+  res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
+  if (res == -1) {
+    fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
+    return -1;
+  }
 
-	res = fork();
-	if (res == -1) {
-		fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
-		goto out_restore;
-	}
-	if (res == 0) {
-		char *env = NULL;
+  res = fork();
+  if (res == -1) {
+    fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
+    goto out_restore;
+  }
+  if (res == 0) {
+    char *env = NULL;
 
-		sigprocmask(SIG_SETMASK, &oldmask, NULL);
-		setuid(geteuid());
-		if (lazy) {
-			execle("/bin/umount", "/bin/umount", "-i", rel_mnt,
-			       "-l", NULL, &env);
-		} else {
-			execle("/bin/umount", "/bin/umount", "-i", rel_mnt,
-			       NULL, &env);
-		}
-		fprintf(stderr, "%s: failed to execute /bin/umount: %s\n",
-			progname, strerror(errno));
-		exit(1);
-	}
-	res = waitpid(res, &status, 0);
-	if (res == -1)
-		fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
+    sigprocmask(SIG_SETMASK, &oldmask, NULL);
+    setuid(geteuid());
+    if (lazy) {
+      execle("/bin/umount", "/bin/umount", "-i", rel_mnt,
+             "-l", NULL, &env);
+    } else {
+      execle("/bin/umount", "/bin/umount", "-i", rel_mnt,
+             NULL, &env);
+    }
+    fprintf(stderr, "%s: failed to execute /bin/umount: %s\n",
+            progname, strerror(errno));
+    exit(1);
+  }
+  res = waitpid(res, &status, 0);
+  if (res == -1)
+    fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
 
-	if (status != 0) {
-		res = -1;
-	}
+  if (status != 0) {
+    res = -1;
+  }
 
  out_restore:
-	sigprocmask(SIG_SETMASK, &oldmask, NULL);
-	return res;
+  sigprocmask(SIG_SETMASK, &oldmask, NULL);
+  return res;
 
 }
 
 int fuse_mnt_umount(const char *progname, const char *abs_mnt,
 		    const char *rel_mnt, int lazy)
 {
-	int res;
+  int res;
 
-	if (!mtab_needs_update(abs_mnt)) {
-		res = umount2(rel_mnt, lazy ? 2 : 0);
-		if (res == -1)
-			fprintf(stderr, "%s: failed to unmount %s: %s\n",
-				progname, abs_mnt, strerror(errno));
-		return res;
-	}
+  if (!mtab_needs_update(abs_mnt)) {
+    res = umount2(rel_mnt, lazy ? 2 : 0);
+    if (res == -1)
+      fprintf(stderr, "%s: failed to unmount %s: %s\n",
+              progname, abs_mnt, strerror(errno));
+    return res;
+  }
 
-	return exec_umount(progname, rel_mnt, lazy);
+  return exec_umount(progname, rel_mnt, lazy);
 }
 
 static int remove_mount(const char *progname, const char *mnt)
 {
-	int res;
-	int status;
-	sigset_t blockmask;
-	sigset_t oldmask;
+  int res;
+  int status;
+  sigset_t blockmask;
+  sigset_t oldmask;
 
-	sigemptyset(&blockmask);
-	sigaddset(&blockmask, SIGCHLD);
-	res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
-	if (res == -1) {
-		fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
-		return -1;
-	}
+  sigemptyset(&blockmask);
+  sigaddset(&blockmask, SIGCHLD);
+  res = sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
+  if (res == -1) {
+    fprintf(stderr, "%s: sigprocmask: %s\n", progname, strerror(errno));
+    return -1;
+  }
 
-	res = fork();
-	if (res == -1) {
-		fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
-		goto out_restore;
-	}
-	if (res == 0) {
-		char *env = NULL;
+  res = fork();
+  if (res == -1) {
+    fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
+    goto out_restore;
+  }
+  if (res == 0) {
+    char *env = NULL;
 
-		sigprocmask(SIG_SETMASK, &oldmask, NULL);
-		setuid(geteuid());
-		execle("/bin/umount", "/bin/umount", "--no-canonicalize", "-i",
-		       "--fake", mnt, NULL, &env);
-		fprintf(stderr, "%s: failed to execute /bin/umount: %s\n",
-			progname, strerror(errno));
-		exit(1);
-	}
-	res = waitpid(res, &status, 0);
-	if (res == -1)
-		fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
+    sigprocmask(SIG_SETMASK, &oldmask, NULL);
+    setuid(geteuid());
+    execle("/bin/umount", "/bin/umount", "--no-canonicalize", "-i",
+           "--fake", mnt, NULL, &env);
+    fprintf(stderr, "%s: failed to execute /bin/umount: %s\n",
+            progname, strerror(errno));
+    exit(1);
+  }
+  res = waitpid(res, &status, 0);
+  if (res == -1)
+    fprintf(stderr, "%s: waitpid: %s\n", progname, strerror(errno));
 
-	if (status != 0)
-		res = -1;
+  if (status != 0)
+    res = -1;
 
  out_restore:
-	sigprocmask(SIG_SETMASK, &oldmask, NULL);
-	return res;
+  sigprocmask(SIG_SETMASK, &oldmask, NULL);
+  return res;
 }
 
 int fuse_mnt_remove_mount(const char *progname, const char *mnt)
 {
-	if (!mtab_needs_update(mnt))
-		return 0;
+  if (!mtab_needs_update(mnt))
+    return 0;
 
-	return remove_mount(progname, mnt);
+  return remove_mount(progname, mnt);
 }
 
 char *fuse_mnt_resolve_path(const char *progname, const char *orig)
 {
-	char buf[PATH_MAX];
-	char *copy;
-	char *dst;
-	char *end;
-	char *lastcomp;
-	const char *toresolv;
+  char buf[PATH_MAX];
+  char *copy;
+  char *dst;
+  char *end;
+  char *lastcomp;
+  const char *toresolv;
 
-	if (!orig[0]) {
-		fprintf(stderr, "%s: invalid mountpoint '%s'\n", progname,
-			orig);
-		return NULL;
-	}
+  if (!orig[0]) {
+    fprintf(stderr, "%s: invalid mountpoint '%s'\n", progname,
+            orig);
+    return NULL;
+  }
 
-	copy = strdup(orig);
-	if (copy == NULL) {
-		fprintf(stderr, "%s: failed to allocate memory\n", progname);
-		return NULL;
-	}
+  copy = strdup(orig);
+  if (copy == NULL) {
+    fprintf(stderr, "%s: failed to allocate memory\n", progname);
+    return NULL;
+  }
 
-	toresolv = copy;
-	lastcomp = NULL;
-	for (end = copy + strlen(copy) - 1; end > copy && *end == '/'; end --);
-	if (end[0] != '/') {
-		char *tmp;
-		end[1] = '\0';
-		tmp = strrchr(copy, '/');
-		if (tmp == NULL) {
-			lastcomp = copy;
-			toresolv = ".";
-		} else {
-			lastcomp = tmp + 1;
-			if (tmp == copy)
-				toresolv = "/";
-		}
-		if (strcmp(lastcomp, ".") == 0 || strcmp(lastcomp, "..") == 0) {
-			lastcomp = NULL;
-			toresolv = copy;
-		}
-		else if (tmp)
-			tmp[0] = '\0';
-	}
-	if (realpath(toresolv, buf) == NULL) {
-		fprintf(stderr, "%s: bad mount point %s: %s\n", progname, orig,
-			strerror(errno));
-		free(copy);
-		return NULL;
-	}
-	if (lastcomp == NULL)
-		dst = strdup(buf);
-	else {
-		dst = (char *) malloc(strlen(buf) + 1 + strlen(lastcomp) + 1);
-		if (dst) {
-			unsigned buflen = strlen(buf);
-			if (buflen && buf[buflen-1] == '/')
-				sprintf(dst, "%s%s", buf, lastcomp);
-			else
-				sprintf(dst, "%s/%s", buf, lastcomp);
-		}
-	}
-	free(copy);
-	if (dst == NULL)
-		fprintf(stderr, "%s: failed to allocate memory\n", progname);
-	return dst;
+  toresolv = copy;
+  lastcomp = NULL;
+  for (end = copy + strlen(copy) - 1; end > copy && *end == '/'; end --);
+  if (end[0] != '/') {
+    char *tmp;
+    end[1] = '\0';
+    tmp = strrchr(copy, '/');
+    if (tmp == NULL) {
+      lastcomp = copy;
+      toresolv = ".";
+    } else {
+      lastcomp = tmp + 1;
+      if (tmp == copy)
+        toresolv = "/";
+    }
+    if (strcmp(lastcomp, ".") == 0 || strcmp(lastcomp, "..") == 0) {
+      lastcomp = NULL;
+      toresolv = copy;
+    }
+    else if (tmp)
+      tmp[0] = '\0';
+  }
+  if (realpath(toresolv, buf) == NULL) {
+    fprintf(stderr, "%s: bad mount point %s: %s\n", progname, orig,
+            strerror(errno));
+    free(copy);
+    return NULL;
+  }
+  if (lastcomp == NULL)
+    dst = strdup(buf);
+  else {
+    dst = (char *) malloc(strlen(buf) + 1 + strlen(lastcomp) + 1);
+    if (dst) {
+      unsigned buflen = strlen(buf);
+      if (buflen && buf[buflen-1] == '/')
+        sprintf(dst, "%s%s", buf, lastcomp);
+      else
+        sprintf(dst, "%s/%s", buf, lastcomp);
+    }
+  }
+  free(copy);
+  if (dst == NULL)
+    fprintf(stderr, "%s: failed to allocate memory\n", progname);
+  return dst;
 }
 
 int fuse_mnt_check_empty(const char *progname, const char *mnt,
 			 mode_t rootmode, off_t rootsize)
 {
-	int isempty = 1;
+  int isempty = 1;
 
-	if (S_ISDIR(rootmode)) {
-		struct dirent *ent;
-		DIR *dp = opendir(mnt);
-		if (dp == NULL) {
-			fprintf(stderr,
-				"%s: failed to open mountpoint for reading: %s\n",
-				progname, strerror(errno));
-			return -1;
-		}
-		while ((ent = readdir(dp)) != NULL) {
-			if (strcmp(ent->d_name, ".") != 0 &&
-			    strcmp(ent->d_name, "..") != 0) {
-				isempty = 0;
-				break;
-			}
-		}
-		closedir(dp);
-	} else if (rootsize)
-		isempty = 0;
+  if (S_ISDIR(rootmode)) {
+    struct dirent *ent;
+    DIR *dp = opendir(mnt);
+    if (dp == NULL) {
+      fprintf(stderr,
+              "%s: failed to open mountpoint for reading: %s\n",
+              progname, strerror(errno));
+      return -1;
+    }
+    while ((ent = readdir(dp)) != NULL) {
+      if (strcmp(ent->d_name, ".") != 0 &&
+          strcmp(ent->d_name, "..") != 0) {
+        isempty = 0;
+        break;
+      }
+    }
+    closedir(dp);
+  } else if (rootsize)
+    isempty = 0;
 
-	if (!isempty) {
-		fprintf(stderr, "%s: mountpoint is not empty\n", progname);
-		fprintf(stderr, "%s: if you are sure this is safe, use the 'nonempty' mount option\n", progname);
-		return -1;
-	}
-	return 0;
-}
-
-int fuse_mnt_check_fuseblk(void)
-{
-	char buf[256];
-	FILE *f = fopen("/proc/filesystems", "r");
-	if (!f)
-		return 1;
-
-	while (fgets(buf, sizeof(buf), f))
-		if (strstr(buf, "fuseblk\n")) {
-			fclose(f);
-			return 1;
-		}
-
-	fclose(f);
-	return 0;
+  if (!isempty) {
+    fprintf(stderr, "%s: mountpoint is not empty\n", progname);
+    fprintf(stderr, "%s: if you are sure this is safe, use the 'nonempty' mount option\n", progname);
+    return -1;
+  }
+  return 0;
 }

src/config.cpp

@@ -55,7 +55,7 @@ Config::Config()
     writeback_cache(false),
     readdirplus(false),
     cache_files(CacheFiles::LIBFUSE),
-    fuse_msg_size(FUSE_MAX_MAX_PAGES),
+    fuse_msg_size(FUSE_MSG_MAX_PAGES),
     POLICYINIT(access),
     POLICYINIT(chmod),
     POLICYINIT(chown),

src/fuse_init.cpp

@@ -73,7 +73,7 @@ namespace l
       }
     else
       {
-        c_.fuse_msg_size = FUSE_DEFAULT_MAX_PAGES_PER_REQ;
+        c_.fuse_msg_size = FUSE_MSG_DEFAULT_PAGES;
       }
   }
 }

src/option_parser.cpp

@@ -382,7 +382,7 @@ parse_and_process_kv_arg(Config            &config,
       else if(key == "fuse_msg_size")
         rv = parse_and_process(value,config.fuse_msg_size,
                                1,
-                               FUSE_MAX_MAX_PAGES);
+                               FUSE_MSG_MAX_PAGES);
     }
 
   if(rv == -1)