Imported FUSE 2.7.4 includes.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29592 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/userlandfs/fuse/fuse.h

@@ -0,0 +1,826 @@
+/*
+  FUSE: Filesystem in Userspace
+  Copyright (C) 2001-2007  Miklos Szeredi <[email protected]>
+
+  This program can be distributed under the terms of the GNU LGPLv2.
+  See the file COPYING.LIB.
+*/
+
+#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 <fcntl.h>
+#include <time.h>
+#include <utime.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/statvfs.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* ----------------------------------------------------------- *
+ * Basic FUSE API					       *
+ * ----------------------------------------------------------- */
+
+/** Handle for a FUSE filesystem */
+struct fuse;
+
+/** Structure containing a raw command */
+struct fuse_cmd;
+
+/** Function to add an entry in a readdir() operation
+ *
+ * @param buf the buffer passed to the readdir() operation
+ * @param name the file name of the directory entry
+ * @param stat file attributes, can be NULL
+ * @param off offset of the next entry or zero
+ * @return 1 if buffer is full, zero otherwise
+ */
+typedef int (*fuse_fill_dir_t) (void *buf, const char *name,
+				const struct stat *stbuf, off_t off);
+
+/* Used by deprecated getdir() method */
+typedef struct fuse_dirhandle *fuse_dirh_t;
+typedef int (*fuse_dirfil_t) (fuse_dirh_t h, const char *name, int type,
+			      ino_t ino);
+
+/**
+ * The file system operations:
+ *
+ * Most of these should work very similarly to the well known UNIX
+ * file system operations.  A major exception is that instead of
+ * returning an error in 'errno', the operation should return the
+ * negated error value (-errno) directly.
+ *
+ * All methods are optional, but some are essential for a useful
+ * filesystem (e.g. getattr).  Open, flush, release, fsync, opendir,
+ * releasedir, fsyncdir, access, create, ftruncate, fgetattr, lock,
+ * init and destroy are special purpose methods, without which a full
+ * featured filesystem can still be implemented.
+ */
+struct fuse_operations {
+	/** Get file attributes.
+	 *
+	 * Similar to stat().  The 'st_dev' and 'st_blksize' fields are
+	 * ignored.	 The 'st_ino' field is ignored except if the 'use_ino'
+	 * mount option is given.
+	 */
+	int (*getattr) (const char *, struct stat *);
+
+	/** Read the target of a symbolic link
+	 *
+	 * The buffer should be filled with a null terminated string.  The
+	 * buffer size argument includes the space for the terminating
+	 * null character.	If the linkname is too long to fit in the
+	 * buffer, it should be truncated.	The return value should be 0
+	 * for success.
+	 */
+	int (*readlink) (const char *, char *, size_t);
+
+	/* Deprecated, use readdir() instead */
+	int (*getdir) (const char *, fuse_dirh_t, fuse_dirfil_t);
+
+	/** Create a file node
+	 *
+	 * This is called for creation of all non-directory, non-symlink
+	 * nodes.  If the filesystem defines a create() method, then for
+	 * regular files that will be called instead.
+	 */
+	int (*mknod) (const char *, mode_t, dev_t);
+
+	/** Create a directory */
+	int (*mkdir) (const char *, mode_t);
+
+	/** Remove a file */
+	int (*unlink) (const char *);
+
+	/** Remove a directory */
+	int (*rmdir) (const char *);
+
+	/** Create a symbolic link */
+	int (*symlink) (const char *, const char *);
+
+	/** Rename a file */
+	int (*rename) (const char *, const char *);
+
+	/** Create a hard link to a file */
+	int (*link) (const char *, const char *);
+
+	/** Change the permission bits of a file */
+	int (*chmod) (const char *, mode_t);
+
+	/** Change the owner and group of a file */
+	int (*chown) (const char *, uid_t, gid_t);
+
+	/** Change the size of a file */
+	int (*truncate) (const char *, off_t);
+
+	/** Change the access and/or modification times of a file
+	 *
+	 * Deprecated, use utimens() instead.
+	 */
+	int (*utime) (const char *, struct utimbuf *);
+
+	/** File open operation
+	 *
+	 * No creation, or truncation flags (O_CREAT, O_EXCL, O_TRUNC)
+	 * will be passed to open().  Open should check if the operation
+	 * is permitted for the given flags.  Optionally open may also
+	 * return an arbitrary filehandle in the fuse_file_info structure,
+	 * which will be passed to all file operations.
+	 *
+	 * Changed in version 2.2
+	 */
+	int (*open) (const char *, struct fuse_file_info *);
+
+	/** Read data from an open file
+	 *
+	 * Read should return exactly the number of bytes requested except
+	 * on EOF or error, otherwise the rest of the data will be
+	 * substituted with zeroes.	 An exception to this is when the
+	 * 'direct_io' mount option is specified, in which case the return
+	 * value of the read system call will reflect the return value of
+	 * this operation.
+	 *
+	 * Changed in version 2.2
+	 */
+	int (*read) (const char *, char *, size_t, off_t,
+		     struct fuse_file_info *);
+
+	/** Write data to an open file
+	 *
+	 * Write should return exactly the number of bytes requested
+	 * except on error.	 An exception to this is when the 'direct_io'
+	 * mount option is specified (see read operation).
+	 *
+	 * Changed in version 2.2
+	 */
+	int (*write) (const char *, const char *, size_t, off_t,
+		      struct fuse_file_info *);
+
+	/** Get file system statistics
+	 *
+	 * The 'f_frsize', 'f_favail', 'f_fsid' and 'f_flag' fields are ignored
+	 *
+	 * Replaced 'struct statfs' parameter with 'struct statvfs' in
+	 * version 2.5
+	 */
+	int (*statfs) (const char *, struct statvfs *);
+
+	/** Possibly flush cached data
+	 *
+	 * BIG NOTE: This is not equivalent to fsync().  It's not a
+	 * request to sync dirty data.
+	 *
+	 * Flush is called on each close() of a file descriptor.  So if a
+	 * filesystem wants to return write errors in close() and the file
+	 * has cached dirty data, this is a good place to write back data
+	 * and return any errors.  Since many applications ignore close()
+	 * errors this is not always useful.
+	 *
+	 * NOTE: The flush() method may be called more than once for each
+	 * open().	This happens if more than one file descriptor refers
+	 * to an opened file due to dup(), dup2() or fork() calls.	It is
+	 * not possible to determine if a flush is final, so each flush
+	 * should be treated equally.  Multiple write-flush sequences are
+	 * relatively rare, so this shouldn't be a problem.
+	 *
+	 * Filesystems shouldn't assume that flush will always be called
+	 * after some writes, or that if will be called at all.
+	 *
+	 * Changed in version 2.2
+	 */
+	int (*flush) (const char *, struct fuse_file_info *);
+
+	/** Release an open file
+	 *
+	 * Release is called when there are no more references to an open
+	 * file: all file descriptors are closed and all memory mappings
+	 * are unmapped.
+	 *
+	 * For every open() call there will be exactly one release() call
+	 * with the same flags and file descriptor.	 It is possible to
+	 * have a file opened more than once, in which case only the last
+	 * release will mean, that no more reads/writes will happen on the
+	 * file.  The return value of release is ignored.
+	 *
+	 * Changed in version 2.2
+	 */
+	int (*release) (const char *, struct fuse_file_info *);
+
+	/** Synchronize file contents
+	 *
+	 * If the datasync parameter is non-zero, then only the user data
+	 * should be flushed, not the meta data.
+	 *
+	 * Changed in version 2.2
+	 */
+	int (*fsync) (const char *, int, struct fuse_file_info *);
+
+	/** Set extended attributes */
+	int (*setxattr) (const char *, const char *, const char *, size_t, int);
+
+	/** Get extended attributes */
+	int (*getxattr) (const char *, const char *, char *, size_t);
+
+	/** List extended attributes */
+	int (*listxattr) (const char *, char *, size_t);
+
+	/** Remove extended attributes */
+	int (*removexattr) (const char *, const char *);
+
+	/** Open directory
+	 *
+	 * This method should check if the open operation is permitted for
+	 * this  directory
+	 *
+	 * Introduced in version 2.3
+	 */
+	int (*opendir) (const char *, struct fuse_file_info *);
+
+	/** Read directory
+	 *
+	 * This supersedes the old getdir() interface.  New applications
+	 * should use this.
+	 *
+	 * The filesystem may choose between two modes of operation:
+	 *
+	 * 1) The readdir implementation ignores the offset parameter, and
+	 * passes zero to the filler function's offset.  The filler
+	 * function will not return '1' (unless an error happens), so the
+	 * whole directory is read in a single readdir operation.  This
+	 * works just like the old getdir() method.
+	 *
+	 * 2) The readdir implementation keeps track of the offsets of the
+	 * directory entries.  It uses the offset parameter and always
+	 * passes non-zero offset to the filler function.  When the buffer
+	 * is full (or an error happens) the filler function will return
+	 * '1'.
+	 *
+	 * Introduced in version 2.3
+	 */
+	int (*readdir) (const char *, void *, fuse_fill_dir_t, off_t,
+			struct fuse_file_info *);
+
+	/** Release directory
+	 *
+	 * Introduced in version 2.3
+	 */
+	int (*releasedir) (const char *, struct fuse_file_info *);
+
+	/** Synchronize directory contents
+	 *
+	 * If the datasync parameter is non-zero, then only the user data
+	 * should be flushed, not the meta data
+	 *
+	 * Introduced in version 2.3
+	 */
+	int (*fsyncdir) (const char *, int, struct fuse_file_info *);
+
+	/**
+	 * Initialize filesystem
+	 *
+	 * The return value will passed in the private_data field of
+	 * fuse_context to all file operations and as a parameter to the
+	 * destroy() method.
+	 *
+	 * Introduced in version 2.3
+	 * Changed in version 2.6
+	 */
+	void *(*init) (struct fuse_conn_info *conn);
+
+	/**
+	 * Clean up filesystem
+	 *
+	 * Called on filesystem exit.
+	 *
+	 * Introduced in version 2.3
+	 */
+	void (*destroy) (void *);
+
+	/**
+	 * Check file access permissions
+	 *
+	 * This will be called for the access() system call.  If the
+	 * 'default_permissions' mount option is given, this method is not
+	 * called.
+	 *
+	 * This method is not called under Linux kernel versions 2.4.x
+	 *
+	 * Introduced in version 2.5
+	 */
+	int (*access) (const char *, int);
+
+	/**
+	 * Create and open a file
+	 *
+	 * If the file does not exist, first create it with the specified
+	 * mode, and then open it.
+	 *
+	 * If this method is not implemented or under Linux kernel
+	 * versions earlier than 2.6.15, the mknod() and open() methods
+	 * will be called instead.
+	 *
+	 * Introduced in version 2.5
+	 */
+	int (*create) (const char *, mode_t, struct fuse_file_info *);
+
+	/**
+	 * Change the size of an open file
+	 *
+	 * This method is called instead of the truncate() method if the
+	 * truncation was invoked from an ftruncate() system call.
+	 *
+	 * If this method is not implemented or under Linux kernel
+	 * versions earlier than 2.6.15, the truncate() method will be
+	 * called instead.
+	 *
+	 * Introduced in version 2.5
+	 */
+	int (*ftruncate) (const char *, off_t, struct fuse_file_info *);
+
+	/**
+	 * Get attributes from an open file
+	 *
+	 * This method is called instead of the getattr() method if the
+	 * file information is available.
+	 *
+	 * Currently this is only called after the create() method if that
+	 * is implemented (see above).  Later it may be called for
+	 * invocations of fstat() too.
+	 *
+	 * Introduced in version 2.5
+	 */
+	int (*fgetattr) (const char *, struct stat *, struct fuse_file_info *);
+
+	/**
+	 * Perform POSIX file locking operation
+	 *
+	 * The cmd argument will be either F_GETLK, F_SETLK or F_SETLKW.
+	 *
+	 * For the meaning of fields in 'struct flock' see the man page
+	 * for fcntl(2).  The l_whence field will always be set to
+	 * SEEK_SET.
+	 *
+	 * For checking lock ownership, the 'fuse_file_info->owner'
+	 * argument must be used.
+	 *
+	 * For F_GETLK operation, the library will first check currently
+	 * held locks, and if a conflicting lock is found it will return
+	 * information without calling this method.	 This ensures, that
+	 * for local locks the l_pid field is correctly filled in.	The
+	 * results may not be accurate in case of race conditions and in
+	 * the presence of hard links, but it's unlikly that an
+	 * application would rely on accurate GETLK results in these
+	 * cases.  If a conflicting lock is not found, this method will be
+	 * called, and the filesystem may fill out l_pid by a meaningful
+	 * value, or it may leave this field zero.
+	 *
+	 * For F_SETLK and F_SETLKW the l_pid field will be set to the pid
+	 * of the process performing the locking operation.
+	 *
+	 * Note: if this method is not implemented, the kernel will still
+	 * allow file locking to work locally.  Hence it is only
+	 * interesting for network filesystems and similar.
+	 *
+	 * Introduced in version 2.6
+	 */
+	int (*lock) (const char *, struct fuse_file_info *, int cmd,
+		     struct flock *);
+
+	/**
+	 * Change the access and modification times of a file with
+	 * nanosecond resolution
+	 *
+	 * Introduced in version 2.6
+	 */
+	int (*utimens) (const char *, const struct timespec tv[2]);
+
+	/**
+	 * Map block index within file to block index within device
+	 *
+	 * Note: This makes sense only for block device backed filesystems
+	 * mounted with the 'blkdev' option
+	 *
+	 * Introduced in version 2.6
+	 */
+	int (*bmap) (const char *, size_t blocksize, uint64_t *idx);
+};
+
+/** Extra context that may be needed by some filesystems
+ *
+ * The uid, gid and pid fields are not filled in case of a writepage
+ * operation.
+ */
+struct fuse_context {
+	/** Pointer to the fuse object */
+	struct fuse *fuse;
+
+	/** User ID of the calling process */
+	uid_t uid;
+
+	/** Group ID of the calling process */
+	gid_t gid;
+
+	/** Thread ID of the calling process */
+	pid_t pid;
+
+	/** Private filesystem data */
+	void *private_data;
+};
+
+/**
+ * Main function of FUSE.
+ *
+ * This is for the lazy.  This is all that has to be called from the
+ * main() function.
+ *
+ * This function does the following:
+ *   - parses command line options (-d -s and -h)
+ *   - passes relevant mount options to the fuse_mount()
+ *   - installs signal handlers for INT, HUP, TERM and PIPE
+ *   - registers an exit handler to unmount the filesystem on program exit
+ *   - creates a fuse handle
+ *   - registers the operations
+ *   - calls either the single-threaded or the multi-threaded event loop
+ *
+ * Note: this is currently implemented as a macro.
+ *
+ * @param argc the argument counter passed to the main() function
+ * @param argv the argument vector passed to the main() function
+ * @param op the file system operation
+ * @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)
+
+/* ----------------------------------------------------------- *
+ * More detailed API					       *
+ * ----------------------------------------------------------- */
+
+/**
+ * Create a new FUSE filesystem.
+ *
+ * @param ch the communication channel
+ * @param args argument vector
+ * @param op the filesystem operations
+ * @param op_size the size of the fuse_operations structure
+ * @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,
+		      const struct fuse_operations *op, size_t op_size,
+		      void *user_data);
+
+/**
+ * Destroy the FUSE handle.
+ *
+ * The communication channel attached to the handle is also destroyed.
+ *
+ * NOTE: This function does not unmount the filesystem.	 If this is
+ * needed, call fuse_unmount() before calling this function.
+ *
+ * @param f the FUSE handle
+ */
+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
+ *
+ * @param f the FUSE handle
+ */
+void fuse_exit(struct fuse *f);
+
+/**
+ * FUSE event loop with multiple threads
+ *
+ * Requests from the kernel are processed, and the appropriate
+ * operations are called.  Request are processed in parallel by
+ * distributing them between multiple threads.
+ *
+ * Calling this function requires the pthreads library to be linked to
+ * the application.
+ *
+ * @param f the FUSE handle
+ * @return 0 if no error occurred, -1 otherwise
+ */
+int fuse_loop_mt(struct fuse *f);
+
+/**
+ * Get the current context
+ *
+ * The context is only valid for the duration of a filesystem
+ * operation, and thus must not be stored and used later.
+ *
+ * @return the context
+ */
+struct fuse_context *fuse_get_context(void);
+
+/**
+ * Check if a request has already been interrupted
+ *
+ * @param req request handle
+ * @return 1 if the request has been interrupted, 0 otherwise
+ */
+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
+ *
+ * Do not call this directly, use fuse_main()
+ */
+int fuse_main_real(int argc, char *argv[], const struct fuse_operations *op,
+		   size_t op_size, void *user_data);
+
+/*
+ * Stacking API
+ */
+
+/**
+ * Fuse filesystem object
+ *
+ * This is opaque object represents a filesystem layer
+ */
+struct fuse_fs;
+
+/*
+ * These functions call the relevant filesystem operation, and return
+ * the result.
+ *
+ * If the operation is not defined, they return -ENOSYS, with the
+ * exception of fuse_fs_open, fuse_fs_release, fuse_fs_opendir,
+ * fuse_fs_releasedir and fuse_fs_statfs, which return 0.
+ */
+
+int fuse_fs_getattr(struct fuse_fs *fs, const char *path, struct stat *buf);
+int fuse_fs_fgetattr(struct fuse_fs *fs, const char *path, struct stat *buf,
+		     struct fuse_file_info *fi);
+int fuse_fs_rename(struct fuse_fs *fs, const char *oldpath,
+		   const char *newpath);
+int fuse_fs_unlink(struct fuse_fs *fs, const char *path);
+int fuse_fs_rmdir(struct fuse_fs *fs, const char *path);
+int fuse_fs_symlink(struct fuse_fs *fs, const char *linkname,
+		    const char *path);
+int fuse_fs_link(struct fuse_fs *fs, const char *oldpath, const char *newpath);
+int fuse_fs_release(struct fuse_fs *fs,	 const char *path,
+		    struct fuse_file_info *fi);
+int fuse_fs_open(struct fuse_fs *fs, const char *path,
+		 struct fuse_file_info *fi);
+int fuse_fs_read(struct fuse_fs *fs, const char *path, char *buf, size_t size,
+		 off_t off, struct fuse_file_info *fi);
+int fuse_fs_write(struct fuse_fs *fs, const char *path, const char *buf,
+		  size_t size, off_t off, struct fuse_file_info *fi);
+int fuse_fs_fsync(struct fuse_fs *fs, const char *path, int datasync,
+		  struct fuse_file_info *fi);
+int fuse_fs_flush(struct fuse_fs *fs, const char *path,
+		  struct fuse_file_info *fi);
+int fuse_fs_statfs(struct fuse_fs *fs, const char *path, struct statvfs *buf);
+int fuse_fs_opendir(struct fuse_fs *fs, const char *path,
+		    struct fuse_file_info *fi);
+int fuse_fs_readdir(struct fuse_fs *fs, const char *path, void *buf,
+		    fuse_fill_dir_t filler, off_t off,
+		    struct fuse_file_info *fi);
+int fuse_fs_fsyncdir(struct fuse_fs *fs, const char *path, int datasync,
+		     struct fuse_file_info *fi);
+int fuse_fs_releasedir(struct fuse_fs *fs, const char *path,
+		       struct fuse_file_info *fi);
+int fuse_fs_create(struct fuse_fs *fs, const char *path, mode_t mode,
+		   struct fuse_file_info *fi);
+int fuse_fs_lock(struct fuse_fs *fs, const char *path,
+		 struct fuse_file_info *fi, int cmd, struct flock *lock);
+int fuse_fs_chmod(struct fuse_fs *fs, const char *path, mode_t mode);
+int fuse_fs_chown(struct fuse_fs *fs, const char *path, uid_t uid, gid_t gid);
+int fuse_fs_truncate(struct fuse_fs *fs, const char *path, off_t size);
+int fuse_fs_ftruncate(struct fuse_fs *fs, const char *path, off_t size,
+		      struct fuse_file_info *fi);
+int fuse_fs_utimens(struct fuse_fs *fs, const char *path,
+		    const struct timespec tv[2]);
+int fuse_fs_access(struct fuse_fs *fs, const char *path, int mask);
+int fuse_fs_readlink(struct fuse_fs *fs, const char *path, char *buf,
+		     size_t len);
+int fuse_fs_mknod(struct fuse_fs *fs, const char *path, mode_t mode,
+		  dev_t rdev);
+int fuse_fs_mkdir(struct fuse_fs *fs, const char *path, mode_t mode);
+int fuse_fs_setxattr(struct fuse_fs *fs, const char *path, const char *name,
+		     const char *value, size_t size, int flags);
+int fuse_fs_getxattr(struct fuse_fs *fs, const char *path, const char *name,
+		     char *value, size_t size);
+int fuse_fs_listxattr(struct fuse_fs *fs, const char *path, char *list,
+		      size_t size);
+int fuse_fs_removexattr(struct fuse_fs *fs, const char *path,
+			const char *name);
+int fuse_fs_bmap(struct fuse_fs *fs, const char *path, size_t blocksize,
+		 uint64_t *idx);
+void fuse_fs_init(struct fuse_fs *fs, struct fuse_conn_info *conn);
+void fuse_fs_destroy(struct fuse_fs *fs);
+
+/**
+ * Create a new fuse filesystem object
+ *
+ * This is usually called from the factory of a fuse module to create
+ * a new instance of a filesystem.
+ *
+ * @param op the filesystem operations
+ * @param op_size the size of the fuse_operations structure
+ * @param user_data user data supplied in the context during the init() method
+ * @return a new filesystem object
+ */
+struct fuse_fs *fuse_fs_new(const struct fuse_operations *op, size_t op_size,
+			    void *user_data);
+
+/**
+ * Filesystem module
+ *
+ * Filesystem modules are registered with the FUSE_REGISTER_MODULE()
+ * macro.
+ *
+ * If the "-omodules=modname:..." option is present, filesystem
+ * objects are created and pushed onto the stack with the 'factory'
+ * function.
+ */
+struct fuse_module {
+	/**
+	 * Name of filesystem
+	 */
+	const char *name;
+
+	/**
+	 * Factory for creating filesystem objects
+	 *
+	 * The function may use and remove options from 'args' that belong
+	 * to this module.
+	 *
+	 * For now the 'fs' vector always contains exactly one filesystem.
+	 * This is the filesystem which will be below the newly created
+	 * filesystem in the stack.
+	 *
+	 * @param args the command line arguments
+	 * @param fs NULL terminated filesystem object vector
+	 * @return the new filesystem object
+	 */
+	struct fuse_fs *(*factory)(struct fuse_args *args,
+				   struct fuse_fs *fs[]);
+
+	struct fuse_module *next;
+	struct fusemod_so *so;
+	int ctr;
+};
+
+/**
+ * Register a filesystem module
+ *
+ * This function is used by FUSE_REGISTER_MODULE and there's usually
+ * no need to call it directly
+ */
+void fuse_register_module(struct fuse_module *mod);
+
+/**
+ * Register filesystem module
+ *
+ * For the parameters, see description of the fields in 'struct
+ * fuse_module'
+ */
+#define FUSE_REGISTER_MODULE(name_, factory_)				  \
+	static __attribute__((constructor)) void name_ ## _register(void) \
+	{								  \
+		static struct fuse_module mod =				  \
+			{ #name_, factory_, NULL, NULL, 0 };		  \
+		fuse_register_module(&mod);				  \
+	}
+
+
+/* ----------------------------------------------------------- *
+ * Advanced API for event handling, don't worry about this...  *
+ * ----------------------------------------------------------- */
+
+/* NOTE: the following functions are deprecated, and will be removed
+   from the 3.0 API.  Use the lowlevel session functions instead */
+
+/** Function type used to process commands */
+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,
+			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);
+
+/** Return the exited flag, which indicates if fuse_exit() has been
+    called */
+int fuse_exited(struct fuse *f);
+
+/** This function is obsolete and implemented as a no-op */
+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
+
+#endif /* _FUSE_H_ */

headers/private/userlandfs/fuse/fuse_common.h

@@ -0,0 +1,243 @@
+/*
+  FUSE: Filesystem in Userspace
+  Copyright (C) 2001-2007  Miklos Szeredi <[email protected]>
+
+  This program can be distributed under the terms of the GNU LGPLv2.
+  See the file COPYING.LIB.
+*/
+
+/** @file */
+
+#if !defined(_FUSE_H_) && !defined(_FUSE_LOWLEVEL_H_)
+#error "Never include <fuse_common.h> directly; use <fuse.h> or <fuse_lowlevel.h> instead."
+#endif
+
+#ifndef _FUSE_COMMON_H_
+#define _FUSE_COMMON_H_
+
+#include "fuse_opt.h"
+#include <stdint.h>
+
+/** Major version of FUSE library interface */
+#define FUSE_MAJOR_VERSION 2
+
+/** Minor version of FUSE library interface */
+#define FUSE_MINOR_VERSION 7
+
+#define FUSE_MAKE_VERSION(maj, min)  ((maj) * 10 + (min))
+#define FUSE_VERSION FUSE_MAKE_VERSION(FUSE_MAJOR_VERSION, FUSE_MINOR_VERSION)
+
+/* This interface uses 64 bit off_t */
+#if _FILE_OFFSET_BITS != 64
+#error Please add -D_FILE_OFFSET_BITS=64 to your compile flags!
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Information about open files
+ *
+ * Changed in version 2.5
+ */
+struct fuse_file_info {
+	/** Open flags.	 Available in open() and release() */
+	int flags;
+
+	/** Old file handle, don't use */
+	unsigned long fh_old;
+
+	/** In case of a write operation indicates if this was caused by a
+	    writepage */
+	int writepage;
+
+	/** Can be filled in by open, to use direct I/O on this file.
+	    Introduced in version 2.4 */
+	unsigned int direct_io : 1;
+
+	/** Can be filled in by open, to indicate, that cached file data
+	    need not be invalidated.  Introduced in version 2.4 */
+	unsigned int keep_cache : 1;
+
+	/** Indicates a flush operation.  Set in flush operation, also
+	    maybe set in highlevel lock operation and lowlevel release
+	    operation.	Introduced in version 2.6 */
+	unsigned int flush : 1;
+
+	/** Padding.  Do not use*/
+	unsigned int padding : 29;
+
+	/** File handle.  May be filled in by filesystem in open().
+	    Available in all other file operations */
+	uint64_t fh;
+
+	/** Lock owner id.  Available in locking operations and flush */
+	uint64_t lock_owner;
+};
+
+/**
+ * Connection information, passed to the ->init() method
+ *
+ * Some of the elements are read-write, these can be changed to
+ * indicate the value requested by the filesystem.  The requested
+ * value must usually be smaller than the indicated value.
+ */
+struct fuse_conn_info {
+	/**
+	 * Major version of the protocol (read-only)
+	 */
+	unsigned proto_major;
+
+	/**
+	 * Minor version of the protocol (read-only)
+	 */
+	unsigned proto_minor;
+
+	/**
+	 * Is asynchronous read supported (read-write)
+	 */
+	unsigned async_read;
+
+	/**
+	 * Maximum size of the write buffer
+	 */
+	unsigned max_write;
+
+	/**
+	 * Maximum readahead
+	 */
+	unsigned max_readahead;
+
+	/**
+	 * For future use.
+	 */
+	unsigned reserved[27];
+};
+
+struct fuse_session;
+struct fuse_chan;
+
+/**
+ * Create a FUSE mountpoint
+ *
+ * Returns a control file descriptor suitable for passing to
+ * fuse_new()
+ *
+ * @param mountpoint the mount point path
+ * @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);
+
+/**
+ * Umount a FUSE mountpoint
+ *
+ * @param mountpoint the mount point path
+ * @param ch the communication channel
+ */
+void fuse_unmount(const char *mountpoint, struct fuse_chan *ch);
+
+/**
+ * Parse common options
+ *
+ * The following options are parsed:
+ *
+ *   '-f'	     foreground
+ *   '-d' '-odebug'  foreground, but keep the debug option
+ *   '-s'	     single threaded
+ *   '-h' '--help'   help
+ *   '-ho'	     help without header
+ *   '-ofsname=..'   file system name, if not present, then set to the program
+ *		     name
+ *
+ * All parameters may be NULL
+ *
+ * @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);
+
+/**
+ * Go into the background
+ *
+ * @param foreground if true, stay in the foreground
+ * @return 0 on success, -1 on failure
+ */
+int fuse_daemonize(int foreground);
+
+/**
+ * Get the version of the library
+ *
+ * @return the version
+ */
+int fuse_version(void);
+
+/* ----------------------------------------------------------- *
+ * Signal handling					       *
+ * ----------------------------------------------------------- */
+
+/**
+ * Exit session on HUP, TERM and INT signals and ignore PIPE signal
+ *
+ * Stores session in a global variable.	 May only be called once per
+ * process until fuse_remove_signal_handlers() is called.
+ *
+ * @param se the session to exit
+ * @return 0 on success, -1 on failure
+ */
+int fuse_set_signal_handlers(struct fuse_session *se);
+
+/**
+ * Restore default signal handlers
+ *
+ * Resets global session.  After this fuse_set_signal_handlers() may
+ * be called again.
+ *
+ * @param se the same session as given in fuse_set_signal_handlers()
+ */
+void fuse_remove_signal_handlers(struct fuse_session *se);
+
+/* ----------------------------------------------------------- *
+ * Compatibility stuff					       *
+ * ----------------------------------------------------------- */
+
+#if FUSE_USE_VERSION < 26
+#    ifdef __FreeBSD__
+#	 if FUSE_USE_VERSION < 25
+#	     error On FreeBSD API version 25 or greater must be used
+#	 endif
+#    endif
+#    include "fuse_common_compat.h"
+#    undef FUSE_MINOR_VERSION
+#    undef fuse_main
+#    define fuse_unmount fuse_unmount_compat22
+#    if FUSE_USE_VERSION == 25
+#	 define FUSE_MINOR_VERSION 5
+#	 define fuse_mount fuse_mount_compat25
+#    elif FUSE_USE_VERSION == 24 || FUSE_USE_VERSION == 22
+#	 define FUSE_MINOR_VERSION 4
+#	 define fuse_mount fuse_mount_compat22
+#    elif FUSE_USE_VERSION == 21
+#	 define FUSE_MINOR_VERSION 1
+#	 define fuse_mount fuse_mount_compat22
+#    elif FUSE_USE_VERSION == 11
+#	 warning Compatibility with API version 11 is deprecated
+#	 undef FUSE_MAJOR_VERSION
+#	 define FUSE_MAJOR_VERSION 1
+#	 define FUSE_MINOR_VERSION 1
+#	 define fuse_mount fuse_mount_compat1
+#    else
+#	 error Compatibility with API version other than 21, 22, 24, 25 and 11 not supported
+#    endif
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _FUSE_COMMON_H_ */

headers/private/userlandfs/fuse/fuse_common_compat.h

@@ -0,0 +1,26 @@
+/*
+  FUSE: Filesystem in Userspace
+  Copyright (C) 2001-2007  Miklos Szeredi <[email protected]>
+
+  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_file_info_compat {
+	int flags;
+	unsigned long fh;
+	int writepage;
+	unsigned int direct_io : 1;
+	unsigned int keep_cache : 1;
+};
+
+int fuse_mount_compat25(const char *mountpoint, struct fuse_args *args);
+
+int fuse_mount_compat22(const char *mountpoint, const char *opts);
+
+int fuse_mount_compat1(const char *mountpoint, const char *args[]);
+
+void fuse_unmount_compat22(const char *mountpoint);

headers/private/userlandfs/fuse/fuse_compat.h

@@ -0,0 +1,201 @@
+/*
+  FUSE: Filesystem in Userspace
+  Copyright (C) 2001-2007  Miklos Szeredi <[email protected]>
+
+  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 (*getdir) (const char *, fuse_dirh_t, fuse_dirfil_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 *, fuse_fill_dir_t, 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);
+
+#ifndef __FreeBSD__
+#include <sys/statfs.h>
+
+struct fuse_operations_compat22 {
+	int (*getattr) (const char *, struct stat *);
+	int (*readlink) (const char *, char *, size_t);
+	int (*getdir) (const char *, fuse_dirh_t, fuse_dirfil_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 *, fuse_fill_dir_t, 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);
+
+typedef int (*fuse_dirfil_t_compat) (fuse_dirh_t h, const char *name, int type);
+struct fuse_operations_compat2 {
+	int (*getattr)	   (const char *, struct stat *);
+	int (*readlink)	   (const char *, char *, size_t);
+	int (*getdir)	   (const char *, fuse_dirh_t, fuse_dirfil_t_compat);
+	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 (*getdir)	(const char *, fuse_dirh_t, fuse_dirfil_t_compat);
+	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__ */

headers/private/userlandfs/fuse/fuse_lowlevel_compat.h

@@ -0,0 +1,155 @@
+/*
+  FUSE: Filesystem in Userspace
+  Copyright (C) 2001-2007  Miklos Szeredi <[email protected]>
+
+  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_lowlevel_ops_compat25 {
+	void (*init) (void *userdata);
+	void (*destroy) (void *userdata);
+	void (*lookup) (fuse_req_t req, fuse_ino_t parent, const char *name);
+	void (*forget) (fuse_req_t req, fuse_ino_t ino, unsigned long nlookup);
+	void (*getattr) (fuse_req_t req, fuse_ino_t ino,
+			 struct fuse_file_info *fi);
+	void (*setattr) (fuse_req_t req, fuse_ino_t ino, struct stat *attr,
+			 int to_set, struct fuse_file_info *fi);
+	void (*readlink) (fuse_req_t req, fuse_ino_t ino);
+	void (*mknod) (fuse_req_t req, fuse_ino_t parent, const char *name,
+		       mode_t mode, dev_t rdev);
+	void (*mkdir) (fuse_req_t req, fuse_ino_t parent, const char *name,
+		       mode_t mode);
+	void (*unlink) (fuse_req_t req, fuse_ino_t parent, const char *name);
+	void (*rmdir) (fuse_req_t req, fuse_ino_t parent, const char *name);
+	void (*symlink) (fuse_req_t req, const char *link, fuse_ino_t parent,
+			 const char *name);
+	void (*rename) (fuse_req_t req, fuse_ino_t parent, const char *name,
+			fuse_ino_t newparent, const char *newname);
+	void (*link) (fuse_req_t req, fuse_ino_t ino, fuse_ino_t newparent,
+		      const char *newname);
+	void (*open) (fuse_req_t req, fuse_ino_t ino,
+		      struct fuse_file_info *fi);
+	void (*read) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
+		      struct fuse_file_info *fi);
+	void (*write) (fuse_req_t req, fuse_ino_t ino, const char *buf,
+		       size_t size, off_t off, struct fuse_file_info *fi);
+	void (*flush) (fuse_req_t req, fuse_ino_t ino,
+		       struct fuse_file_info *fi);
+	void (*release) (fuse_req_t req, fuse_ino_t ino,
+			 struct fuse_file_info *fi);
+	void (*fsync) (fuse_req_t req, fuse_ino_t ino, int datasync,
+		       struct fuse_file_info *fi);
+	void (*opendir) (fuse_req_t req, fuse_ino_t ino,
+			 struct fuse_file_info *fi);
+	void (*readdir) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
+			 struct fuse_file_info *fi);
+	void (*releasedir) (fuse_req_t req, fuse_ino_t ino,
+			    struct fuse_file_info *fi);
+	void (*fsyncdir) (fuse_req_t req, fuse_ino_t ino, int datasync,
+			  struct fuse_file_info *fi);
+	void (*statfs) (fuse_req_t req);
+	void (*setxattr) (fuse_req_t req, fuse_ino_t ino, const char *name,
+			  const char *value, size_t size, int flags);
+	void (*getxattr) (fuse_req_t req, fuse_ino_t ino, const char *name,
+			  size_t size);
+	void (*listxattr) (fuse_req_t req, fuse_ino_t ino, size_t size);
+	void (*removexattr) (fuse_req_t req, fuse_ino_t ino, const char *name);
+	void (*access) (fuse_req_t req, fuse_ino_t ino, int mask);
+	void (*create) (fuse_req_t req, fuse_ino_t parent, const char *name,
+			mode_t mode, struct fuse_file_info *fi);
+};
+
+struct fuse_session *fuse_lowlevel_new_compat25(struct fuse_args *args,
+				const struct fuse_lowlevel_ops_compat25 *op,
+				size_t op_size, void *userdata);
+
+size_t fuse_dirent_size(size_t namelen);
+
+char *fuse_add_dirent(char *buf, const char *name, const struct stat *stbuf,
+		      off_t off);
+
+#ifndef __FreeBSD__
+
+#include <sys/statfs.h>
+
+struct fuse_lowlevel_ops_compat {
+	void (*init) (void *userdata);
+	void (*destroy) (void *userdata);
+	void (*lookup) (fuse_req_t req, fuse_ino_t parent, const char *name);
+	void (*forget) (fuse_req_t req, fuse_ino_t ino, unsigned long nlookup);
+	void (*getattr) (fuse_req_t req, fuse_ino_t ino,
+			 struct fuse_file_info_compat *fi);
+	void (*setattr) (fuse_req_t req, fuse_ino_t ino, struct stat *attr,
+			 int to_set, struct fuse_file_info_compat *fi);
+	void (*readlink) (fuse_req_t req, fuse_ino_t ino);
+	void (*mknod) (fuse_req_t req, fuse_ino_t parent, const char *name,
+		       mode_t mode, dev_t rdev);
+	void (*mkdir) (fuse_req_t req, fuse_ino_t parent, const char *name,
+		       mode_t mode);
+	void (*unlink) (fuse_req_t req, fuse_ino_t parent, const char *name);
+	void (*rmdir) (fuse_req_t req, fuse_ino_t parent, const char *name);
+	void (*symlink) (fuse_req_t req, const char *link, fuse_ino_t parent,
+			 const char *name);
+	void (*rename) (fuse_req_t req, fuse_ino_t parent, const char *name,
+			fuse_ino_t newparent, const char *newname);
+	void (*link) (fuse_req_t req, fuse_ino_t ino, fuse_ino_t newparent,
+		      const char *newname);
+	void (*open) (fuse_req_t req, fuse_ino_t ino,
+		      struct fuse_file_info_compat *fi);
+	void (*read) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
+		      struct fuse_file_info_compat *fi);
+	void (*write) (fuse_req_t req, fuse_ino_t ino, const char *buf,
+		       size_t size, off_t off, struct fuse_file_info_compat *fi);
+	void (*flush) (fuse_req_t req, fuse_ino_t ino,
+		       struct fuse_file_info_compat *fi);
+	void (*release) (fuse_req_t req, fuse_ino_t ino,
+			 struct fuse_file_info_compat *fi);
+	void (*fsync) (fuse_req_t req, fuse_ino_t ino, int datasync,
+		       struct fuse_file_info_compat *fi);
+	void (*opendir) (fuse_req_t req, fuse_ino_t ino,
+			 struct fuse_file_info_compat *fi);
+	void (*readdir) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
+			 struct fuse_file_info_compat *fi);
+	void (*releasedir) (fuse_req_t req, fuse_ino_t ino,
+			    struct fuse_file_info_compat *fi);
+	void (*fsyncdir) (fuse_req_t req, fuse_ino_t ino, int datasync,
+			  struct fuse_file_info_compat *fi);
+	void (*statfs) (fuse_req_t req);
+	void (*setxattr) (fuse_req_t req, fuse_ino_t ino, const char *name,
+			  const char *value, size_t size, int flags);
+	void (*getxattr) (fuse_req_t req, fuse_ino_t ino, const char *name,
+			  size_t size);
+	void (*listxattr) (fuse_req_t req, fuse_ino_t ino, size_t size);
+	void (*removexattr) (fuse_req_t req, fuse_ino_t ino, const char *name);
+	void (*access) (fuse_req_t req, fuse_ino_t ino, int mask);
+	void (*create) (fuse_req_t req, fuse_ino_t parent, const char *name,
+			mode_t mode, struct fuse_file_info_compat *fi);
+};
+
+int fuse_reply_statfs_compat(fuse_req_t req, const struct statfs *stbuf);
+
+int fuse_reply_open_compat(fuse_req_t req,
+			   const struct fuse_file_info_compat *fi);
+
+struct fuse_session *fuse_lowlevel_new_compat(const char *opts,
+				const struct fuse_lowlevel_ops_compat *op,
+				size_t op_size, void *userdata);
+
+#endif /* __FreeBSD__ */
+
+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);

headers/private/userlandfs/fuse/fuse_opt.h

@@ -0,0 +1,261 @@
+/*
+  FUSE: Filesystem in Userspace
+  Copyright (C) 2001-2007  Miklos Szeredi <[email protected]>
+
+  This program can be distributed under the terms of the GNU LGPLv2.
+  See the file COPYING.LIB.
+*/
+
+#ifndef _FUSE_OPT_H_
+#define _FUSE_OPT_H_
+
+/** @file
+ *
+ * This file defines the option parsing interface of FUSE
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Option description
+ *
+ * This structure describes a single option, and and action associated
+ * with it, in case it matches.
+ *
+ * More than one such match may occur, in which case the action for
+ * each match is executed.
+ *
+ * There are three possible actions in case of a match:
+ *
+ * i) An integer (int or unsigned) variable determined by 'offset' is
+ *    set to 'value'
+ *
+ * ii) The processing function is called, with 'value' as the key
+ *
+ * iii) An integer (any) or string (char *) variable determined by
+ *    'offset' is set to the value of an option parameter
+ *
+ * 'offset' should normally be either set to
+ *
+ *  - 'offsetof(struct foo, member)'  actions i) and iii)
+ *
+ *  - -1			      action ii)
+ *
+ * The 'offsetof()' macro is defined in the <stddef.h> header.
+ *
+ * The template determines which options match, and also have an
+ * effect on the action.  Normally the action is either i) or ii), but
+ * if a format is present in the template, then action iii) is
+ * performed.
+ *
+ * The types of templates are:
+ *
+ * 1) "-x", "-foo", "--foo", "--foo-bar", etc.	These match only
+ *   themselves.  Invalid values are "--" and anything beginning
+ *   with "-o"
+ *
+ * 2) "foo", "foo-bar", etc.  These match "-ofoo", "-ofoo-bar" or
+ *    the relevant option in a comma separated option list
+ *
+ * 3) "bar=", "--foo=", etc.  These are variations of 1) and 2)
+ *    which have a parameter
+ *
+ * 4) "bar=%s", "--foo=%lu", etc.  Same matching as above but perform
+ *    action iii).
+ *
+ * 5) "-x ", etc.  Matches either "-xparam" or "-x param" as
+ *    two separate arguments
+ *
+ * 6) "-x %s", etc.  Combination of 4) and 5)
+ *
+ * If the format is "%s", memory is allocated for the string unlike
+ * with scanf().
+ */
+struct fuse_opt {
+	/** Matching template and optional parameter formatting */
+	const char *templ;
+
+	/**
+	 * Offset of variable within 'data' parameter of fuse_opt_parse()
+	 * or -1
+	 */
+	unsigned long offset;
+
+	/**
+	 * Value to set the variable to, or to be passed as 'key' to the
+	 * processing function.	 Ignored if template has a format
+	 */
+	int value;
+};
+
+/**
+ * Key option.	In case of a match, the processing function will be
+ * called with the specified key.
+ */
+#define FUSE_OPT_KEY(templ, key) { templ, -1U, key }
+
+/**
+ * Last option.	 An array of 'struct fuse_opt' must end with a NULL
+ * template value
+ */
+#define FUSE_OPT_END { .templ = NULL }
+
+/**
+ * Argument list
+ */
+struct fuse_args {
+	/** Argument count */
+	int argc;
+
+	/** Argument vector.  NULL terminated */
+	char **argv;
+
+	/** Is 'argv' allocated? */
+	int allocated;
+};
+
+/**
+ * Initializer for 'struct fuse_args'
+ */
+#define FUSE_ARGS_INIT(argc, argv) { argc, argv, 0 }
+
+/**
+ * Key value passed to the processing function if an option did not
+ * match any template
+ */
+#define FUSE_OPT_KEY_OPT     -1
+
+/**
+ * Key value passed to the processing function for all non-options
+ *
+ * Non-options are the arguments beginning with a charater other than
+ * '-' or all arguments after the special '--' option
+ */
+#define FUSE_OPT_KEY_NONOPT  -2
+
+/**
+ * Special key value for options to keep
+ *
+ * Argument is not passed to processing function, but behave as if the
+ * processing function returned 1
+ */
+#define FUSE_OPT_KEY_KEEP -3
+
+/**
+ * Special key value for options to discard
+ *
+ * Argument is not passed to processing function, but behave as if the
+ * processing function returned zero
+ */
+#define FUSE_OPT_KEY_DISCARD -4
+
+/**
+ * Processing function
+ *
+ * This function is called if
+ *    - option did not match any 'struct fuse_opt'
+ *    - argument is a non-option
+ *    - option did match and offset was set to -1
+ *
+ * The 'arg' parameter will always contain the whole argument or
+ * option including the parameter if exists.  A two-argument option
+ * ("-x foo") is always converted to single arguemnt option of the
+ * form "-xfoo" before this function is called.
+ *
+ * Options of the form '-ofoo' are passed to this function without the
+ * '-o' prefix.
+ *
+ * The return value of this function determines whether this argument
+ * is to be inserted into the output argument vector, or discarded.
+ *
+ * @param data is the user data passed to the fuse_opt_parse() function
+ * @param arg is the whole argument or option
+ * @param key determines why the processing function was called
+ * @param outargs the current output argument list
+ * @return -1 on error, 0 if arg is to be discarded, 1 if arg should be kept
+ */
+typedef int (*fuse_opt_proc_t)(void *data, const char *arg, int key,
+			       struct fuse_args *outargs);
+
+/**
+ * Option parsing function
+ *
+ * If 'args' was returned from a previous call to fuse_opt_parse() or
+ * it was constructed from
+ *
+ * A NULL 'args' is equivalent to an empty argument vector
+ *
+ * A NULL 'opts' is equivalent to an 'opts' array containing a single
+ * end marker
+ *
+ * A NULL 'proc' is equivalent to a processing function always
+ * returning '1'
+ *
+ * @param args is the input and output argument list
+ * @param data is the user data
+ * @param opts is the option description array
+ * @param proc is the processing function
+ * @return -1 on error, 0 on success
+ */
+int fuse_opt_parse(struct fuse_args *args, void *data,
+		   const struct fuse_opt opts[], fuse_opt_proc_t proc);
+
+/**
+ * Add an option to a comma separated option list
+ *
+ * @param opts is a pointer to an option list, may point to a NULL value
+ * @param opt is the option to add
+ * @return -1 on allocation error, 0 on success
+ */
+int fuse_opt_add_opt(char **opts, const char *opt);
+
+/**
+ * Add an argument to a NULL terminated argument vector
+ *
+ * @param args is the structure containing the current argument list
+ * @param arg is the new argument to add
+ * @return -1 on allocation error, 0 on success
+ */
+int fuse_opt_add_arg(struct fuse_args *args, const char *arg);
+
+/**
+ * Add an argument at the specified position in a NULL terminated
+ * argument vector
+ *
+ * Adds the argument to the N-th position.  This is useful for adding
+ * options at the beggining of the array which must not come after the
+ * special '--' option.
+ *
+ * @param args is the structure containing the current argument list
+ * @param pos is the position at which to add the argument
+ * @param arg is the new argument to add
+ * @return -1 on allocation error, 0 on success
+ */
+int fuse_opt_insert_arg(struct fuse_args *args, int pos, const char *arg);
+
+/**
+ * Free the contents of argument list
+ *
+ * The structure itself is not freed
+ *
+ * @param args is the structure containing the argument list
+ */
+void fuse_opt_free_args(struct fuse_args *args);
+
+
+/**
+ * Check if an option matches
+ *
+ * @param opts is the option description array
+ * @param opt is the option to match
+ * @return 1 if a match is found, 0 if not
+ */
+int fuse_opt_match(const struct fuse_opt opts[], const char *opt);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _FUSE_OPT_H_ */