include/linux/fuse.h - kernel/msm-4.9 - Gitiles

 /*
     FUSE: Filesystem in Userspace
     Copyright (C) 2001-2006  Miklos Szeredi <miklos@szeredi.hu>

     This program can be distributed under the terms of the GNU GPL.
     See the file COPYING.
 */

 /*
  * This file defines the kernel interface of FUSE
  *
  * Protocol changelog:
  *
  * 7.9:
  *  - new fuse_getattr_in input argument of GETATTR
  *  - add lk_flags in fuse_lk_in
  *  - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
  *  - add blksize field to fuse_attr
  *  - add file flags field to fuse_read_in and fuse_write_in
  */

 #include <asm/types.h>
 #include <linux/major.h>

 /** Version number of this interface */
 #define FUSE_KERNEL_VERSION 7

 /** Minor version number of this interface */
 #define FUSE_KERNEL_MINOR_VERSION 9

 /** The node ID of the root inode */
 #define FUSE_ROOT_ID 1

 /** The major number of the fuse character device */
 #define FUSE_MAJOR MISC_MAJOR

 /** The minor number of the fuse character device */
 #define FUSE_MINOR 229

 /* Make sure all structures are padded to 64bit boundary, so 32bit
    userspace works under 64bit kernels */

 struct fuse_attr {
 	__u64	ino;
 	__u64	size;
 	__u64	blocks;
 	__u64	atime;
 	__u64	mtime;
 	__u64	ctime;
 	__u32	atimensec;
 	__u32	mtimensec;
 	__u32	ctimensec;
 	__u32	mode;
 	__u32	nlink;
 	__u32	uid;
 	__u32	gid;
 	__u32	rdev;
 	__u32	blksize;
 	__u32	padding;
 };

 struct fuse_kstatfs {
 	__u64	blocks;
 	__u64	bfree;
 	__u64	bavail;
 	__u64	files;
 	__u64	ffree;
 	__u32	bsize;
 	__u32	namelen;
 	__u32	frsize;
 	__u32	padding;
 	__u32	spare[6];
 };

 struct fuse_file_lock {
 	__u64	start;
 	__u64	end;
 	__u32	type;
 	__u32	pid; /* tgid */
 };

 /**
  * Bitmasks for fuse_setattr_in.valid
  */
 #define FATTR_MODE	(1 << 0)
 #define FATTR_UID	(1 << 1)
 #define FATTR_GID	(1 << 2)
 #define FATTR_SIZE	(1 << 3)
 #define FATTR_ATIME	(1 << 4)
 #define FATTR_MTIME	(1 << 5)
 #define FATTR_FH	(1 << 6)
 #define FATTR_ATIME_NOW	(1 << 7)
 #define FATTR_MTIME_NOW	(1 << 8)
 #define FATTR_LOCKOWNER	(1 << 9)

 /**
  * Flags returned by the OPEN request
  *
  * FOPEN_DIRECT_IO: bypass page cache for this open file
  * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
  */
 #define FOPEN_DIRECT_IO		(1 << 0)
 #define FOPEN_KEEP_CACHE	(1 << 1)

 /**
  * INIT request/reply flags
  */
 #define FUSE_ASYNC_READ		(1 << 0)
 #define FUSE_POSIX_LOCKS	(1 << 1)
 #define FUSE_FILE_OPS		(1 << 2)
 #define FUSE_ATOMIC_O_TRUNC	(1 << 3)

 /**
  * Release flags
  */
 #define FUSE_RELEASE_FLUSH	(1 << 0)

 /**
  * Getattr flags
  */
 #define FUSE_GETATTR_FH		(1 << 0)

 /**
  * Lock flags
  */
 #define FUSE_LK_FLOCK		(1 << 0)

 /**
  * WRITE flags
  *
  * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
  * FUSE_WRITE_LOCKOWNER: lock_owner field is valid
  */
 #define FUSE_WRITE_CACHE	(1 << 0)
 #define FUSE_WRITE_LOCKOWNER	(1 << 1)

 /**
  * Read flags
  */
 #define FUSE_READ_LOCKOWNER	(1 << 1)

 enum fuse_opcode {
 	FUSE_LOOKUP	   = 1,
 	FUSE_FORGET	   = 2,  /* no reply */
 	FUSE_GETATTR	   = 3,
 	FUSE_SETATTR	   = 4,
 	FUSE_READLINK	   = 5,
 	FUSE_SYMLINK	   = 6,
 	FUSE_MKNOD	   = 8,
 	FUSE_MKDIR	   = 9,
 	FUSE_UNLINK	   = 10,
 	FUSE_RMDIR	   = 11,
 	FUSE_RENAME	   = 12,
 	FUSE_LINK	   = 13,
 	FUSE_OPEN	   = 14,
 	FUSE_READ	   = 15,
 	FUSE_WRITE	   = 16,
 	FUSE_STATFS	   = 17,
 	FUSE_RELEASE       = 18,
 	FUSE_FSYNC         = 20,
 	FUSE_SETXATTR      = 21,
 	FUSE_GETXATTR      = 22,
 	FUSE_LISTXATTR     = 23,
 	FUSE_REMOVEXATTR   = 24,
 	FUSE_FLUSH         = 25,
 	FUSE_INIT          = 26,
 	FUSE_OPENDIR       = 27,
 	FUSE_READDIR       = 28,
 	FUSE_RELEASEDIR    = 29,
 	FUSE_FSYNCDIR      = 30,
 	FUSE_GETLK         = 31,
 	FUSE_SETLK         = 32,
 	FUSE_SETLKW        = 33,
 	FUSE_ACCESS        = 34,
 	FUSE_CREATE        = 35,
 	FUSE_INTERRUPT     = 36,
 	FUSE_BMAP          = 37,
 	FUSE_DESTROY       = 38,
 };

 /* The read buffer is required to be at least 8k, but may be much larger */
 #define FUSE_MIN_READ_BUFFER 8192

 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120

 struct fuse_entry_out {
 	__u64	nodeid;		/* Inode ID */
 	__u64	generation;	/* Inode generation: nodeid:gen must
 				   be unique for the fs's lifetime */
 	__u64	entry_valid;	/* Cache timeout for the name */
 	__u64	attr_valid;	/* Cache timeout for the attributes */
 	__u32	entry_valid_nsec;
 	__u32	attr_valid_nsec;
 	struct fuse_attr attr;
 };

 struct fuse_forget_in {
 	__u64	nlookup;
 };

 struct fuse_getattr_in {
 	__u32	getattr_flags;
 	__u32	dummy;
 	__u64	fh;
 };

 #define FUSE_COMPAT_ATTR_OUT_SIZE 96

 struct fuse_attr_out {
 	__u64	attr_valid;	/* Cache timeout for the attributes */
 	__u32	attr_valid_nsec;
 	__u32	dummy;
 	struct fuse_attr attr;
 };

 struct fuse_mknod_in {
 	__u32	mode;
 	__u32	rdev;
 };

 struct fuse_mkdir_in {
 	__u32	mode;
 	__u32	padding;
 };

 struct fuse_rename_in {
 	__u64	newdir;
 };

 struct fuse_link_in {
 	__u64	oldnodeid;
 };

 struct fuse_setattr_in {
 	__u32	valid;
 	__u32	padding;
 	__u64	fh;
 	__u64	size;
 	__u64	lock_owner;
 	__u64	atime;
 	__u64	mtime;
 	__u64	unused2;
 	__u32	atimensec;
 	__u32	mtimensec;
 	__u32	unused3;
 	__u32	mode;
 	__u32	unused4;
 	__u32	uid;
 	__u32	gid;
 	__u32	unused5;
 };

 struct fuse_open_in {
 	__u32	flags;
 	__u32	mode;
 };

 struct fuse_open_out {
 	__u64	fh;
 	__u32	open_flags;
 	__u32	padding;
 };

 struct fuse_release_in {
 	__u64	fh;
 	__u32	flags;
 	__u32	release_flags;
 	__u64	lock_owner;
 };

 struct fuse_flush_in {
 	__u64	fh;
 	__u32	unused;
 	__u32	padding;
 	__u64	lock_owner;
 };

 struct fuse_read_in {
 	__u64	fh;
 	__u64	offset;
 	__u32	size;
 	__u32	read_flags;
 	__u64	lock_owner;
 	__u32	flags;
 	__u32	padding;
 };

 #define FUSE_COMPAT_WRITE_IN_SIZE 24

 struct fuse_write_in {
 	__u64	fh;
 	__u64	offset;
 	__u32	size;
 	__u32	write_flags;
 	__u64	lock_owner;
 	__u32	flags;
 	__u32	padding;
 };

 struct fuse_write_out {
 	__u32	size;
 	__u32	padding;
 };

 #define FUSE_COMPAT_STATFS_SIZE 48

 struct fuse_statfs_out {
 	struct fuse_kstatfs st;
 };

 struct fuse_fsync_in {
 	__u64	fh;
 	__u32	fsync_flags;
 	__u32	padding;
 };

 struct fuse_setxattr_in {
 	__u32	size;
 	__u32	flags;
 };

 struct fuse_getxattr_in {
 	__u32	size;
 	__u32	padding;
 };

 struct fuse_getxattr_out {
 	__u32	size;
 	__u32	padding;
 };

 struct fuse_lk_in {
 	__u64	fh;
 	__u64	owner;
 	struct fuse_file_lock lk;
 	__u32	lk_flags;
 	__u32	padding;
 };

 struct fuse_lk_out {
 	struct fuse_file_lock lk;
 };

 struct fuse_access_in {
 	__u32	mask;
 	__u32	padding;
 };

 struct fuse_init_in {
 	__u32	major;
 	__u32	minor;
 	__u32	max_readahead;
 	__u32	flags;
 };

 struct fuse_init_out {
 	__u32	major;
 	__u32	minor;
 	__u32	max_readahead;
 	__u32	flags;
 	__u32	unused;
 	__u32	max_write;
 };

 struct fuse_interrupt_in {
 	__u64	unique;
 };

 struct fuse_bmap_in {
 	__u64	block;
 	__u32	blocksize;
 	__u32	padding;
 };

 struct fuse_bmap_out {
 	__u64	block;
 };

 struct fuse_in_header {
 	__u32	len;
 	__u32	opcode;
 	__u64	unique;
 	__u64	nodeid;
 	__u32	uid;
 	__u32	gid;
 	__u32	pid;
 	__u32	padding;
 };

 struct fuse_out_header {
 	__u32	len;
 	__s32	error;
 	__u64	unique;
 };

 struct fuse_dirent {
 	__u64	ino;
 	__u64	off;
 	__u32	namelen;
 	__u32	type;
 	char name[0];
 };

 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
 #define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
 #define FUSE_DIRENT_SIZE(d) \
 	FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
	/*
	FUSE: Filesystem in Userspace
	Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>

	This program can be distributed under the terms of the GNU GPL.
	See the file COPYING.
	*/

	/*
	* This file defines the kernel interface of FUSE
	*
	* Protocol changelog:
	*
	* 7.9:
	* - new fuse_getattr_in input argument of GETATTR
	* - add lk_flags in fuse_lk_in
	* - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
	* - add blksize field to fuse_attr
	* - add file flags field to fuse_read_in and fuse_write_in
	*/

	#include <asm/types.h>
	#include <linux/major.h>

	/** Version number of this interface */
	#define FUSE_KERNEL_VERSION 7

	/** Minor version number of this interface */
	#define FUSE_KERNEL_MINOR_VERSION 9

	/** The node ID of the root inode */
	#define FUSE_ROOT_ID 1

	/** The major number of the fuse character device */
	#define FUSE_MAJOR MISC_MAJOR

	/** The minor number of the fuse character device */
	#define FUSE_MINOR 229

	/* Make sure all structures are padded to 64bit boundary, so 32bit
	userspace works under 64bit kernels */

	struct fuse_attr {
	__u64 ino;
	__u64 size;
	__u64 blocks;
	__u64 atime;
	__u64 mtime;
	__u64 ctime;
	__u32 atimensec;
	__u32 mtimensec;
	__u32 ctimensec;
	__u32 mode;
	__u32 nlink;
	__u32 uid;
	__u32 gid;
	__u32 rdev;
	__u32 blksize;
	__u32 padding;
	};

	struct fuse_kstatfs {
	__u64 blocks;
	__u64 bfree;
	__u64 bavail;
	__u64 files;
	__u64 ffree;
	__u32 bsize;
	__u32 namelen;
	__u32 frsize;
	__u32 padding;
	__u32 spare[6];
	};

	struct fuse_file_lock {
	__u64 start;
	__u64 end;
	__u32 type;
	__u32 pid; /* tgid */
	};

	/**
	* Bitmasks for fuse_setattr_in.valid
	*/
	#define FATTR_MODE (1 << 0)
	#define FATTR_UID (1 << 1)
	#define FATTR_GID (1 << 2)
	#define FATTR_SIZE (1 << 3)
	#define FATTR_ATIME (1 << 4)
	#define FATTR_MTIME (1 << 5)
	#define FATTR_FH (1 << 6)
	#define FATTR_ATIME_NOW (1 << 7)
	#define FATTR_MTIME_NOW (1 << 8)
	#define FATTR_LOCKOWNER (1 << 9)

	/**
	* Flags returned by the OPEN request
	*
	* FOPEN_DIRECT_IO: bypass page cache for this open file
	* FOPEN_KEEP_CACHE: don't invalidate the data cache on open
	*/
	#define FOPEN_DIRECT_IO (1 << 0)
	#define FOPEN_KEEP_CACHE (1 << 1)

	/**
	* INIT request/reply flags
	*/
	#define FUSE_ASYNC_READ (1 << 0)
	#define FUSE_POSIX_LOCKS (1 << 1)
	#define FUSE_FILE_OPS (1 << 2)
	#define FUSE_ATOMIC_O_TRUNC (1 << 3)

	/**
	* Release flags
	*/
	#define FUSE_RELEASE_FLUSH (1 << 0)

	/**
	* Getattr flags
	*/
	#define FUSE_GETATTR_FH (1 << 0)

	/**
	* Lock flags
	*/
	#define FUSE_LK_FLOCK (1 << 0)

	/**
	* WRITE flags
	*
	* FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
	* FUSE_WRITE_LOCKOWNER: lock_owner field is valid
	*/
	#define FUSE_WRITE_CACHE (1 << 0)
	#define FUSE_WRITE_LOCKOWNER (1 << 1)

	/**
	* Read flags
	*/
	#define FUSE_READ_LOCKOWNER (1 << 1)

	enum fuse_opcode {
	FUSE_LOOKUP = 1,
	FUSE_FORGET = 2, /* no reply */
	FUSE_GETATTR = 3,
	FUSE_SETATTR = 4,
	FUSE_READLINK = 5,
	FUSE_SYMLINK = 6,
	FUSE_MKNOD = 8,
	FUSE_MKDIR = 9,
	FUSE_UNLINK = 10,
	FUSE_RMDIR = 11,
	FUSE_RENAME = 12,
	FUSE_LINK = 13,
	FUSE_OPEN = 14,
	FUSE_READ = 15,
	FUSE_WRITE = 16,
	FUSE_STATFS = 17,
	FUSE_RELEASE = 18,
	FUSE_FSYNC = 20,
	FUSE_SETXATTR = 21,
	FUSE_GETXATTR = 22,
	FUSE_LISTXATTR = 23,
	FUSE_REMOVEXATTR = 24,
	FUSE_FLUSH = 25,
	FUSE_INIT = 26,
	FUSE_OPENDIR = 27,
	FUSE_READDIR = 28,
	FUSE_RELEASEDIR = 29,
	FUSE_FSYNCDIR = 30,
	FUSE_GETLK = 31,
	FUSE_SETLK = 32,
	FUSE_SETLKW = 33,
	FUSE_ACCESS = 34,
	FUSE_CREATE = 35,
	FUSE_INTERRUPT = 36,
	FUSE_BMAP = 37,
	FUSE_DESTROY = 38,
	};

	/* The read buffer is required to be at least 8k, but may be much larger */
	#define FUSE_MIN_READ_BUFFER 8192

	#define FUSE_COMPAT_ENTRY_OUT_SIZE 120

	struct fuse_entry_out {
	__u64 nodeid; /* Inode ID */
	__u64 generation; /* Inode generation: nodeid:gen must
	be unique for the fs's lifetime */
	__u64 entry_valid; /* Cache timeout for the name */
	__u64 attr_valid; /* Cache timeout for the attributes */
	__u32 entry_valid_nsec;
	__u32 attr_valid_nsec;
	struct fuse_attr attr;
	};

	struct fuse_forget_in {
	__u64 nlookup;
	};

	struct fuse_getattr_in {
	__u32 getattr_flags;
	__u32 dummy;
	__u64 fh;
	};

	#define FUSE_COMPAT_ATTR_OUT_SIZE 96

	struct fuse_attr_out {
	__u64 attr_valid; /* Cache timeout for the attributes */
	__u32 attr_valid_nsec;
	__u32 dummy;
	struct fuse_attr attr;
	};

	struct fuse_mknod_in {
	__u32 mode;
	__u32 rdev;
	};

	struct fuse_mkdir_in {
	__u32 mode;
	__u32 padding;
	};

	struct fuse_rename_in {
	__u64 newdir;
	};

	struct fuse_link_in {
	__u64 oldnodeid;
	};

	struct fuse_setattr_in {
	__u32 valid;
	__u32 padding;
	__u64 fh;
	__u64 size;
	__u64 lock_owner;
	__u64 atime;
	__u64 mtime;
	__u64 unused2;
	__u32 atimensec;
	__u32 mtimensec;
	__u32 unused3;
	__u32 mode;
	__u32 unused4;
	__u32 uid;
	__u32 gid;
	__u32 unused5;
	};

	struct fuse_open_in {
	__u32 flags;
	__u32 mode;
	};

	struct fuse_open_out {
	__u64 fh;
	__u32 open_flags;
	__u32 padding;
	};

	struct fuse_release_in {
	__u64 fh;
	__u32 flags;
	__u32 release_flags;
	__u64 lock_owner;
	};

	struct fuse_flush_in {
	__u64 fh;
	__u32 unused;
	__u32 padding;
	__u64 lock_owner;
	};

	struct fuse_read_in {
	__u64 fh;
	__u64 offset;
	__u32 size;
	__u32 read_flags;
	__u64 lock_owner;
	__u32 flags;
	__u32 padding;
	};

	#define FUSE_COMPAT_WRITE_IN_SIZE 24

	struct fuse_write_in {
	__u64 fh;
	__u64 offset;
	__u32 size;
	__u32 write_flags;
	__u64 lock_owner;
	__u32 flags;
	__u32 padding;
	};

	struct fuse_write_out {
	__u32 size;
	__u32 padding;
	};

	#define FUSE_COMPAT_STATFS_SIZE 48

	struct fuse_statfs_out {
	struct fuse_kstatfs st;
	};

	struct fuse_fsync_in {
	__u64 fh;
	__u32 fsync_flags;
	__u32 padding;
	};

	struct fuse_setxattr_in {
	__u32 size;
	__u32 flags;
	};

	struct fuse_getxattr_in {
	__u32 size;
	__u32 padding;
	};

	struct fuse_getxattr_out {
	__u32 size;
	__u32 padding;
	};

	struct fuse_lk_in {
	__u64 fh;
	__u64 owner;
	struct fuse_file_lock lk;
	__u32 lk_flags;
	__u32 padding;
	};

	struct fuse_lk_out {
	struct fuse_file_lock lk;
	};

	struct fuse_access_in {
	__u32 mask;
	__u32 padding;
	};

	struct fuse_init_in {
	__u32 major;
	__u32 minor;
	__u32 max_readahead;
	__u32 flags;
	};

	struct fuse_init_out {
	__u32 major;
	__u32 minor;
	__u32 max_readahead;
	__u32 flags;
	__u32 unused;
	__u32 max_write;
	};

	struct fuse_interrupt_in {
	__u64 unique;
	};

	struct fuse_bmap_in {
	__u64 block;
	__u32 blocksize;
	__u32 padding;
	};

	struct fuse_bmap_out {
	__u64 block;
	};

	struct fuse_in_header {
	__u32 len;
	__u32 opcode;
	__u64 unique;
	__u64 nodeid;
	__u32 uid;
	__u32 gid;
	__u32 pid;
	__u32 padding;
	};

	struct fuse_out_header {
	__u32 len;
	__s32 error;
	__u64 unique;
	};

	struct fuse_dirent {
	__u64 ino;
	__u64 off;
	__u32 namelen;
	__u32 type;
	char name[0];
	};

	#define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
	#define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
	#define FUSE_DIRENT_SIZE(d) \
	FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)