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fuse.h

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/*
  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.
*/

#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
 */
00057 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.
 */
00079 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.
 */
00433 struct fuse_context {
      /** Pointer to the fuse object */
00435       struct fuse *fuse;

      /** User ID of the calling process */
00438       uid_t uid;

      /** Group ID of the calling process */
00441       gid_t gid;

      /** Thread ID of the calling process */
00444       pid_t pid;

      /** Private filesystem data */
00447       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.
 */
00685 struct fuse_module {
      /**
       * Name of filesystem
       */
00689       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'
 */
00727 #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 */
00744 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
00806 #      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_ */

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