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File: [cvs.NetBSD.org] / src / lib / librefuse / fuse.h (download)

Revision 1.22, Sun Nov 20 13:28:32 2016 UTC (4 years ago) by pho
Branch: MAIN
CVS Tags: prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, matt-nb8-mediatek-base, matt-nb8-mediatek, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan
Branch point for: phil-wifi
Changes since 1.21: +9 -15 lines

fuse_main(3): Support general fuse options via fuse_parse_cmdline(3)

* Prototypes for fuse_new(3), fuse_mount(3), and fuse_unmount(3) now
  matches to the original fuse interface.

* Add fuse_daemonize(3): needs to have a different prototype,
  otherwise we can't use puffs_daemon(3).

* Remove fuse_setup(3) and fuse_teardown(3). These obsolete functions
  has already been removed from the original interface.

* fuse_main(3) now supports the following command-line options
  compatible with the original fuse:

  -h, --help      print help message
  -V, --version   print library version (currently does nothing)
  -d, -o debug    enable debug output (PUFFS_FLAG_OPDUMP), implies -f
  -f              foreground mode
  -s              single threaded mode (always enabled for now)
  -o fsname=NAME  explicitly set the name of the file system

* fuse_main(3) now daemonizes the process by default. This is for the
  compatibility with the original fuse.

/* $NetBSD: fuse.h,v 1.22 2016/11/20 13:28:32 pho Exp $ */

/*
 * Copyright 2007 Alistair Crooks.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef FUSE_H_
#define FUSE_H_	20070123

/* set the default version to use for the fuse interface */
/* this value determines the API to be used */
#ifndef FUSE_USE_VERSION
#define FUSE_USE_VERSION	26
#endif

#include <sys/types.h>

#include <puffs.h>
#include <utime.h>

#ifdef __cplusplus
extern "C" {
#endif

struct fuse;
struct fuse_args; /* XXXsupportme */

struct fuse_file_info {
	int32_t		flags;
	uint32_t	fh_old;
	int32_t		writepage;
	uint32_t	direct_io:1;
	uint32_t	keep_cache:1;
	uint32_t	flush:1;
	uint32_t	padding:29;
	uint64_t	fh;
	uint64_t	lock_owner;
};

struct fuse_conn_info {
	uint32_t proto_major;
	uint32_t proto_minor;
	uint32_t async_read;
	uint32_t max_write;
	uint32_t max_readahead;
	uint32_t reserved[27];
};

/* equivalent'ish of puffs_cc */
struct fuse_context {
	struct fuse	*fuse;
	uid_t		uid;
	gid_t		gid;
	pid_t		pid;
	void		*private_data;
};

/**
 * Argument list
 */
struct fuse_args {
	int	argc;
	char	**argv;
	int	allocated;
};

/**
 * Initializer for 'struct fuse_args'
 */
#define FUSE_ARGS_INIT(argc, argv) { argc, argv, 0 }

typedef struct puffs_fuse_dirh *fuse_dirh_t;

typedef int (*fuse_fill_dir_t)(void *, const char *, const struct stat *, off_t);
typedef int (*fuse_dirfil_t)(fuse_dirh_t, const char *, int, ino_t);

#define FUSE_VERSION	26
#define FUSE_MAJOR_VERSION	2
#define FUSE_MINOR_VERSION	6

/*
 * These operations shadow those in puffs_usermount, and are used
 * as a table of callbacks to make when file system requests come
 * in.
 *
 * NOTE: keep same order as fuse
 */
struct fuse_operations {
	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)(struct fuse_conn_info *);
	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 *);
	int	(*lock)(const char *, struct fuse_file_info *, int, struct flock *);
	int	(*utimens)(const char *, const struct timespec *);
	int	(*bmap)(const char *, size_t , uint64_t *);
};


struct fuse *fuse_new(struct fuse_args *,
	const struct fuse_operations *, size_t, void *);

int fuse_mount(struct fuse *, const char *);
void fuse_unmount(struct fuse *);

int fuse_daemonize(struct fuse *);

int fuse_main_real(int, char **, const struct fuse_operations *, size_t, void *);
int fuse_loop(struct fuse *);
struct fuse_context *fuse_get_context(void);
void fuse_exit(struct fuse *);
void fuse_destroy(struct fuse *);

#if FUSE_USE_VERSION == 22
#define fuse_unmount fuse_unmount_compat22
#endif

void fuse_unmount_compat22(const char *);

#if FUSE_USE_VERSION >= 26
#define fuse_main(argc, argv, op, user_data) \
            fuse_main_real(argc, argv, op, sizeof(*(op)), user_data)
#else
#define fuse_main(argc, argv, op) \
            fuse_main_real(argc, argv, op, sizeof(*(op)), NULL)
#endif

#ifdef __cplusplus
}
#endif

#include <fuse_opt.h>

#endif