[net-next-2.6.git] / include / linux / fuse.h

/*
    FUSE: Filesystem in Userspace
    Copyright (C) 2001-2008  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
 *
 * 7.10
 *  - add nonseekable open flag
 *
 * 7.11
 *  - add IOCTL message
 *  - add unsolicited notification support
 *  - add POLL message and NOTIFY_POLL notification
 *
 * 7.12
 *  - add umask flag to input argument of open, mknod and mkdir
 *  - add notification messages for invalidation of inodes and
 *    directory entries
 *
 * 7.13
 *  - make max number of background requests and congestion threshold
 *    tunables
 *
 * 7.14
 *  - add splice support to fuse device
 *
 * 7.15
 *  - add store notify
 *  - add retrieve notify
 */

#ifndef _LINUX_FUSE_H
#define _LINUX_FUSE_H

#include <linux/types.h>

/*
 * Version negotiation:
 *
 * Both the kernel and userspace send the version they support in the
 * INIT request and reply respectively.
 *
 * If the major versions match then both shall use the smallest
 * of the two minor versions for communication.
 *
 * If the kernel supports a larger major version, then userspace shall
 * reply with the major version it supports, ignore the rest of the
 * INIT message and expect a new INIT message from the kernel with a
 * matching major version.
 *
 * If the library supports a larger major version, then it shall fall
 * back to the major protocol version sent by the kernel for
 * communication and reply with that major version (and an arbitrary
 * supported minor version).
 */

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

/** Minor version number of this interface */
#define FUSE_KERNEL_MINOR_VERSION 15

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

/* 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
 * FOPEN_NONSEEKABLE: the file is not seekable
 */
#define FOPEN_DIRECT_IO		(1 << 0)
#define FOPEN_KEEP_CACHE	(1 << 1)
#define FOPEN_NONSEEKABLE	(1 << 2)

/**
 * INIT request/reply flags
 *
 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
 * FUSE_DONT_MASK: don't apply umask to file mode on create operations
 */
#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)
#define FUSE_EXPORT_SUPPORT	(1 << 4)
#define FUSE_BIG_WRITES		(1 << 5)
#define FUSE_DONT_MASK		(1 << 6)

/**
 * CUSE INIT request/reply flags
 *
 * CUSE_UNRESTRICTED_IOCTL:  use unrestricted ioctl
 */
#define CUSE_UNRESTRICTED_IOCTL	(1 << 0)

/**
 * 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)

/**
 * Ioctl flags
 *
 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
 * FUSE_IOCTL_RETRY: retry with new iovecs
 *
 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
 */
#define FUSE_IOCTL_COMPAT	(1 << 0)
#define FUSE_IOCTL_UNRESTRICTED	(1 << 1)
#define FUSE_IOCTL_RETRY	(1 << 2)

#define FUSE_IOCTL_MAX_IOV	256

/**
 * Poll flags
 *
 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify
 */
#define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)

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,
	FUSE_IOCTL         = 39,
	FUSE_POLL          = 40,
	FUSE_NOTIFY_REPLY  = 41,

	/* CUSE specific operations */
	CUSE_INIT          = 4096,
};

enum fuse_notify_code {
	FUSE_NOTIFY_POLL   = 1,
	FUSE_NOTIFY_INVAL_INODE = 2,
	FUSE_NOTIFY_INVAL_ENTRY = 3,
	FUSE_NOTIFY_STORE = 4,
	FUSE_NOTIFY_RETRIEVE = 5,
	FUSE_NOTIFY_CODE_MAX,
};

/* 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;
};

#define FUSE_COMPAT_MKNOD_IN_SIZE 8

struct fuse_mknod_in {
	__u32	mode;
	__u32	rdev;
	__u32	umask;
	__u32	padding;
};

struct fuse_mkdir_in {
	__u32	mode;
	__u32	umask;
};

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	unused;
};

struct fuse_create_in {
	__u32	flags;
	__u32	mode;
	__u32	umask;
	__u32	padding;
};

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;
	__u16   max_background;
	__u16   congestion_threshold;
	__u32	max_write;
};

#define CUSE_INIT_INFO_MAX 4096

struct cuse_init_in {
	__u32	major;
	__u32	minor;
	__u32	unused;
	__u32	flags;
};

struct cuse_init_out {
	__u32	major;
	__u32	minor;
	__u32	unused;
	__u32	flags;
	__u32	max_read;
	__u32	max_write;
	__u32	dev_major;		/* chardev major */
	__u32	dev_minor;		/* chardev minor */
	__u32	spare[10];
};

struct fuse_interrupt_in {
	__u64	unique;
};

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

struct fuse_bmap_out {
	__u64	block;
};

struct fuse_ioctl_in {
	__u64	fh;
	__u32	flags;
	__u32	cmd;
	__u64	arg;
	__u32	in_size;
	__u32	out_size;
};

struct fuse_ioctl_out {
	__s32	result;
	__u32	flags;
	__u32	in_iovs;
	__u32	out_iovs;
};

struct fuse_poll_in {
	__u64	fh;
	__u64	kh;
	__u32	flags;
	__u32   padding;
};

struct fuse_poll_out {
	__u32	revents;
	__u32	padding;
};

struct fuse_notify_poll_wakeup_out {
	__u64	kh;
};

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)

struct fuse_notify_inval_inode_out {
	__u64	ino;
	__s64	off;
	__s64	len;
};

struct fuse_notify_inval_entry_out {
	__u64	parent;
	__u32	namelen;
	__u32	padding;
};

struct fuse_notify_store_out {
	__u64	nodeid;
	__u64	offset;
	__u32	size;
	__u32	padding;
};

struct fuse_notify_retrieve_out {
	__u64	notify_unique;
	__u64	nodeid;
	__u64	offset;
	__u32	size;
	__u32	padding;
};

/* Matches the size of fuse_write_in */
struct fuse_notify_retrieve_in {
	__u64	dummy1;
	__u64	offset;
	__u32	size;
	__u32	dummy2;
	__u64	dummy3;
	__u64	dummy4;
};

#endif /* _LINUX_FUSE_H */
Commit	Line	Data
d8a5ba45 MS	1	/*
d8a5ba45 MS	2	FUSE: Filesystem in Userspace
1f55ed06	3	Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu>
d8a5ba45 MS	4
	5	This program can be distributed under the terms of the GNU GPL.
	6	See the file COPYING.
	7	*/
	8
c79e322f MS	9	/*
	10	* This file defines the kernel interface of FUSE
	11	*
	12	* Protocol changelog:
	13	*
	14	* 7.9:
	15	* - new fuse_getattr_in input argument of GETATTR
a9ff4f87	16	* - add lk_flags in fuse_lk_in
f3332114	17	* - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
0e9663ee	18	* - add blksize field to fuse_attr
a6643094	19	* - add file flags field to fuse_read_in and fuse_write_in
a7c1b990 TH	20	*
	21	* 7.10
	22	* - add nonseekable open flag
1f55ed06 MS	23	*
	24	* 7.11
	25	* - add IOCTL message
	26	* - add unsolicited notification support
	27	* - add POLL message and NOTIFY_POLL notification
e0a43ddc MS	28	*
	29	* 7.12
	30	* - add umask flag to input argument of open, mknod and mkdir
3b463ae0 JM	31	* - add notification messages for invalidation of inodes and
3b463ae0 JM	32	* directory entries
7a6d3c8b CH	33	*
	34	* 7.13
	35	* - make max number of background requests and congestion threshold
	36	* tunables
dd3bb14f MS	37	*
	38	* 7.14
	39	* - add splice support to fuse device
a1d75f25 MS	40	*
	41	* 7.15
	42	* - add store notify
2d45ba38	43	* - add retrieve notify
c79e322f	44	*/
d8a5ba45	45
29d434b3 TH	46	#ifndef _LINUX_FUSE_H
	47	#define _LINUX_FUSE_H
	48
1f55ed06	49	#include <linux/types.h>
d8a5ba45	50
37d217f0 MS	51	/*
	52	* Version negotiation:
	53	*
	54	* Both the kernel and userspace send the version they support in the
	55	* INIT request and reply respectively.
	56	*
	57	* If the major versions match then both shall use the smallest
	58	* of the two minor versions for communication.
	59	*
	60	* If the kernel supports a larger major version, then userspace shall
	61	* reply with the major version it supports, ignore the rest of the
	62	* INIT message and expect a new INIT message from the kernel with a
	63	* matching major version.
	64	*
	65	* If the library supports a larger major version, then it shall fall
	66	* back to the major protocol version sent by the kernel for
	67	* communication and reply with that major version (and an arbitrary
	68	* supported minor version).
	69	*/
	70
d8a5ba45	71	/** Version number of this interface */
9e6268db	72	#define FUSE_KERNEL_VERSION 7
d8a5ba45 MS	73
d8a5ba45 MS	74	/** Minor version number of this interface */
a1d75f25	75	#define FUSE_KERNEL_MINOR_VERSION 15
d8a5ba45 MS	76
	77	/** The node ID of the root inode */
	78	#define FUSE_ROOT_ID 1
	79
06663267 MS	80	/* Make sure all structures are padded to 64bit boundary, so 32bit
	81	userspace works under 64bit kernels */
	82
d8a5ba45 MS	83	struct fuse_attr {
	84	__u64 ino;
	85	__u64 size;
	86	__u64 blocks;
	87	__u64 atime;
	88	__u64 mtime;
	89	__u64 ctime;
	90	__u32 atimensec;
	91	__u32 mtimensec;
	92	__u32 ctimensec;
	93	__u32 mode;
	94	__u32 nlink;
	95	__u32 uid;
	96	__u32 gid;
	97	__u32 rdev;
0e9663ee MS	98	__u32 blksize;
0e9663ee MS	99	__u32 padding;
d8a5ba45 MS	100	};
d8a5ba45 MS	101
e5e5558e MS	102	struct fuse_kstatfs {
	103	__u64 blocks;
	104	__u64 bfree;
	105	__u64 bavail;
	106	__u64 files;
	107	__u64 ffree;
	108	__u32 bsize;
	109	__u32 namelen;
de5f1202 MS	110	__u32 frsize;
	111	__u32 padding;
	112	__u32 spare[6];
e5e5558e MS	113	};
e5e5558e MS	114
71421259 MS	115	struct fuse_file_lock {
	116	__u64 start;
	117	__u64 end;
	118	__u32 type;
	119	__u32 pid; /* tgid */
	120	};
	121
9cd68455 MS	122	/**
	123	* Bitmasks for fuse_setattr_in.valid
	124	*/
9e6268db MS	125	#define FATTR_MODE (1 << 0)
	126	#define FATTR_UID (1 << 1)
	127	#define FATTR_GID (1 << 2)
	128	#define FATTR_SIZE (1 << 3)
	129	#define FATTR_ATIME (1 << 4)
	130	#define FATTR_MTIME (1 << 5)
befc649c	131	#define FATTR_FH (1 << 6)
17637cba MS	132	#define FATTR_ATIME_NOW (1 << 7)
17637cba MS	133	#define FATTR_MTIME_NOW (1 << 8)
f3332114	134	#define FATTR_LOCKOWNER (1 << 9)
9e6268db	135
45323fb7 MS	136	/**
	137	* Flags returned by the OPEN request
	138	*
	139	* FOPEN_DIRECT_IO: bypass page cache for this open file
	140	* FOPEN_KEEP_CACHE: don't invalidate the data cache on open
a7c1b990	141	* FOPEN_NONSEEKABLE: the file is not seekable
45323fb7 MS	142	*/
	143	#define FOPEN_DIRECT_IO (1 << 0)
	144	#define FOPEN_KEEP_CACHE (1 << 1)
a7c1b990	145	#define FOPEN_NONSEEKABLE (1 << 2)
45323fb7	146
9cd68455 MS	147	/**
9cd68455 MS	148	* INIT request/reply flags
33670fa2 MS	149	*
33670fa2 MS	150	* FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
e0a43ddc	151	* FUSE_DONT_MASK: don't apply umask to file mode on create operations
9cd68455 MS	152	*/
9cd68455 MS	153	#define FUSE_ASYNC_READ (1 << 0)
71421259	154	#define FUSE_POSIX_LOCKS (1 << 1)
c79e322f	155	#define FUSE_FILE_OPS (1 << 2)
6ff958ed	156	#define FUSE_ATOMIC_O_TRUNC (1 << 3)
33670fa2	157	#define FUSE_EXPORT_SUPPORT (1 << 4)
78bb6cb9	158	#define FUSE_BIG_WRITES (1 << 5)
e0a43ddc	159	#define FUSE_DONT_MASK (1 << 6)
9cd68455	160
151060ac TH	161	/**
	162	* CUSE INIT request/reply flags
	163	*
	164	* CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl
	165	*/
	166	#define CUSE_UNRESTRICTED_IOCTL (1 << 0)
	167
e9168c18 MS	168	/**
	169	* Release flags
	170	*/
	171	#define FUSE_RELEASE_FLUSH (1 << 0)
	172
c79e322f MS	173	/**
	174	* Getattr flags
	175	*/
	176	#define FUSE_GETATTR_FH (1 << 0)
	177
a9ff4f87 MS	178	/**
	179	* Lock flags
	180	*/
	181	#define FUSE_LK_FLOCK (1 << 0)
	182
b25e82e5 MS	183	/**
	184	* WRITE flags
	185	*
	186	* FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
f3332114	187	* FUSE_WRITE_LOCKOWNER: lock_owner field is valid
b25e82e5 MS	188	*/
b25e82e5 MS	189	#define FUSE_WRITE_CACHE (1 << 0)
f3332114 MS	190	#define FUSE_WRITE_LOCKOWNER (1 << 1)
	191
	192	/**
	193	* Read flags
	194	*/
	195	#define FUSE_READ_LOCKOWNER (1 << 1)
b25e82e5	196
59efec7b TH	197	/**
	198	* Ioctl flags
	199	*
	200	* FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
	201	* FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
	202	* FUSE_IOCTL_RETRY: retry with new iovecs
	203	*
	204	* FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
	205	*/
	206	#define FUSE_IOCTL_COMPAT (1 << 0)
	207	#define FUSE_IOCTL_UNRESTRICTED (1 << 1)
	208	#define FUSE_IOCTL_RETRY (1 << 2)
	209
	210	#define FUSE_IOCTL_MAX_IOV 256
	211
95668a69 TH	212	/**
	213	* Poll flags
	214	*
	215	* FUSE_POLL_SCHEDULE_NOTIFY: request poll notify
	216	*/
	217	#define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
	218
334f485d	219	enum fuse_opcode {
e5e5558e MS	220	FUSE_LOOKUP = 1,
	221	FUSE_FORGET = 2, /* no reply */
	222	FUSE_GETATTR = 3,
9e6268db	223	FUSE_SETATTR = 4,
e5e5558e	224	FUSE_READLINK = 5,
9e6268db	225	FUSE_SYMLINK = 6,
9e6268db MS	226	FUSE_MKNOD = 8,
	227	FUSE_MKDIR = 9,
	228	FUSE_UNLINK = 10,
	229	FUSE_RMDIR = 11,
	230	FUSE_RENAME = 12,
	231	FUSE_LINK = 13,
b6aeaded MS	232	FUSE_OPEN = 14,
	233	FUSE_READ = 15,
	234	FUSE_WRITE = 16,
e5e5558e	235	FUSE_STATFS = 17,
b6aeaded MS	236	FUSE_RELEASE = 18,
b6aeaded MS	237	FUSE_FSYNC = 20,
92a8780e MS	238	FUSE_SETXATTR = 21,
	239	FUSE_GETXATTR = 22,
	240	FUSE_LISTXATTR = 23,
	241	FUSE_REMOVEXATTR = 24,
b6aeaded	242	FUSE_FLUSH = 25,
04730fef MS	243	FUSE_INIT = 26,
	244	FUSE_OPENDIR = 27,
	245	FUSE_READDIR = 28,
82547981	246	FUSE_RELEASEDIR = 29,
31d40d74	247	FUSE_FSYNCDIR = 30,
71421259 MS	248	FUSE_GETLK = 31,
	249	FUSE_SETLK = 32,
	250	FUSE_SETLKW = 33,
fd72faac	251	FUSE_ACCESS = 34,
a4d27e75 MS	252	FUSE_CREATE = 35,
a4d27e75 MS	253	FUSE_INTERRUPT = 36,
b2d2272f	254	FUSE_BMAP = 37,
0ec7ca41	255	FUSE_DESTROY = 38,
59efec7b	256	FUSE_IOCTL = 39,
95668a69	257	FUSE_POLL = 40,
2d45ba38	258	FUSE_NOTIFY_REPLY = 41,
151060ac TH	259
	260	/* CUSE specific operations */
	261	CUSE_INIT = 4096,
334f485d MS	262	};
334f485d MS	263
8599396b	264	enum fuse_notify_code {
95668a69	265	FUSE_NOTIFY_POLL = 1,
3b463ae0 JM	266	FUSE_NOTIFY_INVAL_INODE = 2,
3b463ae0 JM	267	FUSE_NOTIFY_INVAL_ENTRY = 3,
a1d75f25	268	FUSE_NOTIFY_STORE = 4,
2d45ba38	269	FUSE_NOTIFY_RETRIEVE = 5,
8599396b TH	270	FUSE_NOTIFY_CODE_MAX,
	271	};
	272
1d3d752b MS	273	/* The read buffer is required to be at least 8k, but may be much larger */
1d3d752b MS	274	#define FUSE_MIN_READ_BUFFER 8192
e5e5558e	275
0e9663ee MS	276	#define FUSE_COMPAT_ENTRY_OUT_SIZE 120
0e9663ee MS	277
e5e5558e MS	278	struct fuse_entry_out {
	279	__u64 nodeid; /* Inode ID */
	280	__u64 generation; /* Inode generation: nodeid:gen must
	281	be unique for the fs's lifetime */
	282	__u64 entry_valid; /* Cache timeout for the name */
	283	__u64 attr_valid; /* Cache timeout for the attributes */
	284	__u32 entry_valid_nsec;
	285	__u32 attr_valid_nsec;
	286	struct fuse_attr attr;
	287	};
	288
	289	struct fuse_forget_in {
9e6268db	290	__u64 nlookup;
e5e5558e MS	291	};
e5e5558e MS	292
c79e322f MS	293	struct fuse_getattr_in {
	294	__u32 getattr_flags;
	295	__u32 dummy;
	296	__u64 fh;
	297	};
	298
0e9663ee MS	299	#define FUSE_COMPAT_ATTR_OUT_SIZE 96
0e9663ee MS	300
e5e5558e MS	301	struct fuse_attr_out {
	302	__u64 attr_valid; /* Cache timeout for the attributes */
	303	__u32 attr_valid_nsec;
	304	__u32 dummy;
	305	struct fuse_attr attr;
	306	};
	307
e0a43ddc MS	308	#define FUSE_COMPAT_MKNOD_IN_SIZE 8
e0a43ddc MS	309
9e6268db MS	310	struct fuse_mknod_in {
	311	__u32 mode;
	312	__u32 rdev;
e0a43ddc MS	313	__u32 umask;
e0a43ddc MS	314	__u32 padding;
9e6268db MS	315	};
	316
	317	struct fuse_mkdir_in {
	318	__u32 mode;
e0a43ddc	319	__u32 umask;
9e6268db MS	320	};
	321
	322	struct fuse_rename_in {
	323	__u64 newdir;
	324	};
	325
	326	struct fuse_link_in {
	327	__u64 oldnodeid;
	328	};
	329
	330	struct fuse_setattr_in {
	331	__u32 valid;
06663267	332	__u32 padding;
befc649c MS	333	__u64 fh;
befc649c MS	334	__u64 size;
f3332114	335	__u64 lock_owner;
befc649c MS	336	__u64 atime;
	337	__u64 mtime;
	338	__u64 unused2;
	339	__u32 atimensec;
	340	__u32 mtimensec;
	341	__u32 unused3;
	342	__u32 mode;
	343	__u32 unused4;
	344	__u32 uid;
	345	__u32 gid;
	346	__u32 unused5;
9e6268db MS	347	};
9e6268db MS	348
b6aeaded	349	struct fuse_open_in {
e0a43ddc MS	350	__u32 flags;
	351	__u32 unused;
	352	};
	353
	354	struct fuse_create_in {
b6aeaded	355	__u32 flags;
fd72faac	356	__u32 mode;
e0a43ddc MS	357	__u32 umask;
e0a43ddc MS	358	__u32 padding;
b6aeaded MS	359	};
	360
	361	struct fuse_open_out {
	362	__u64 fh;
	363	__u32 open_flags;
06663267	364	__u32 padding;
b6aeaded MS	365	};
	366
	367	struct fuse_release_in {
	368	__u64 fh;
	369	__u32 flags;
e9168c18 MS	370	__u32 release_flags;
e9168c18 MS	371	__u64 lock_owner;
b6aeaded MS	372	};
	373
	374	struct fuse_flush_in {
	375	__u64 fh;
e9168c18	376	__u32 unused;
06663267	377	__u32 padding;
71421259	378	__u64 lock_owner;
b6aeaded MS	379	};
	380
	381	struct fuse_read_in {
	382	__u64 fh;
	383	__u64 offset;
	384	__u32 size;
f3332114 MS	385	__u32 read_flags;
f3332114 MS	386	__u64 lock_owner;
a6643094 MS	387	__u32 flags;
a6643094 MS	388	__u32 padding;
b6aeaded MS	389	};
b6aeaded MS	390
f3332114 MS	391	#define FUSE_COMPAT_WRITE_IN_SIZE 24
f3332114 MS	392
b6aeaded MS	393	struct fuse_write_in {
	394	__u64 fh;
	395	__u64 offset;
	396	__u32 size;
	397	__u32 write_flags;
f3332114	398	__u64 lock_owner;
a6643094 MS	399	__u32 flags;
a6643094 MS	400	__u32 padding;
b6aeaded MS	401	};
	402
	403	struct fuse_write_out {
	404	__u32 size;
06663267	405	__u32 padding;
b6aeaded MS	406	};
b6aeaded MS	407
de5f1202 MS	408	#define FUSE_COMPAT_STATFS_SIZE 48
de5f1202 MS	409
e5e5558e MS	410	struct fuse_statfs_out {
	411	struct fuse_kstatfs st;
	412	};
	413
b6aeaded MS	414	struct fuse_fsync_in {
	415	__u64 fh;
	416	__u32 fsync_flags;
06663267	417	__u32 padding;
b6aeaded MS	418	};
b6aeaded MS	419
92a8780e MS	420	struct fuse_setxattr_in {
	421	__u32 size;
	422	__u32 flags;
	423	};
	424
	425	struct fuse_getxattr_in {
	426	__u32 size;
06663267	427	__u32 padding;
92a8780e MS	428	};
	429
	430	struct fuse_getxattr_out {
	431	__u32 size;
06663267	432	__u32 padding;
92a8780e MS	433	};
92a8780e MS	434
71421259 MS	435	struct fuse_lk_in {
	436	__u64 fh;
	437	__u64 owner;
	438	struct fuse_file_lock lk;
a9ff4f87 MS	439	__u32 lk_flags;
a9ff4f87 MS	440	__u32 padding;
71421259 MS	441	};
	442
	443	struct fuse_lk_out {
	444	struct fuse_file_lock lk;
	445	};
	446
31d40d74 MS	447	struct fuse_access_in {
	448	__u32 mask;
	449	__u32 padding;
	450	};
	451
3ec870d5	452	struct fuse_init_in {
334f485d MS	453	__u32 major;
334f485d MS	454	__u32 minor;
9cd68455 MS	455	__u32 max_readahead;
9cd68455 MS	456	__u32 flags;
334f485d MS	457	};
334f485d MS	458
3ec870d5 MS	459	struct fuse_init_out {
	460	__u32 major;
	461	__u32 minor;
9cd68455 MS	462	__u32 max_readahead;
9cd68455 MS	463	__u32 flags;
7a6d3c8b CH	464	__u16 max_background;
7a6d3c8b CH	465	__u16 congestion_threshold;
3ec870d5 MS	466	__u32 max_write;
	467	};
	468
151060ac TH	469	#define CUSE_INIT_INFO_MAX 4096
	470
	471	struct cuse_init_in {
	472	__u32 major;
	473	__u32 minor;
	474	__u32 unused;
	475	__u32 flags;
	476	};
	477
	478	struct cuse_init_out {
	479	__u32 major;
	480	__u32 minor;
	481	__u32 unused;
	482	__u32 flags;
	483	__u32 max_read;
	484	__u32 max_write;
	485	__u32 dev_major; /* chardev major */
	486	__u32 dev_minor; /* chardev minor */
	487	__u32 spare[10];
	488	};
	489
a4d27e75 MS	490	struct fuse_interrupt_in {
	491	__u64 unique;
	492	};
	493
b2d2272f MS	494	struct fuse_bmap_in {
	495	__u64 block;
	496	__u32 blocksize;
	497	__u32 padding;
	498	};
	499
	500	struct fuse_bmap_out {
	501	__u64 block;
	502	};
	503
59efec7b TH	504	struct fuse_ioctl_in {
	505	__u64 fh;
	506	__u32 flags;
	507	__u32 cmd;
	508	__u64 arg;
	509	__u32 in_size;
	510	__u32 out_size;
	511	};
	512
	513	struct fuse_ioctl_out {
	514	__s32 result;
	515	__u32 flags;
	516	__u32 in_iovs;
	517	__u32 out_iovs;
	518	};
	519
95668a69 TH	520	struct fuse_poll_in {
	521	__u64 fh;
	522	__u64 kh;
	523	__u32 flags;
	524	__u32 padding;
	525	};
	526
	527	struct fuse_poll_out {
	528	__u32 revents;
	529	__u32 padding;
	530	};
	531
	532	struct fuse_notify_poll_wakeup_out {
	533	__u64 kh;
	534	};
	535
334f485d MS	536	struct fuse_in_header {
	537	__u32 len;
	538	__u32 opcode;
	539	__u64 unique;
	540	__u64 nodeid;
	541	__u32 uid;
	542	__u32 gid;
	543	__u32 pid;
06663267	544	__u32 padding;
334f485d MS	545	};
	546
	547	struct fuse_out_header {
	548	__u32 len;
	549	__s32 error;
	550	__u64 unique;
	551	};
	552
e5e5558e MS	553	struct fuse_dirent {
	554	__u64 ino;
	555	__u64 off;
	556	__u32 namelen;
	557	__u32 type;
	558	char name[0];
	559	};
	560
21f3da95	561	#define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
e5e5558e MS	562	#define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
	563	#define FUSE_DIRENT_SIZE(d) \
	564	FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
29d434b3	565
3b463ae0 JM	566	struct fuse_notify_inval_inode_out {
	567	__u64 ino;
	568	__s64 off;
	569	__s64 len;
	570	};
	571
	572	struct fuse_notify_inval_entry_out {
	573	__u64 parent;
	574	__u32 namelen;
	575	__u32 padding;
	576	};
	577
a1d75f25 MS	578	struct fuse_notify_store_out {
	579	__u64 nodeid;
	580	__u64 offset;
	581	__u32 size;
	582	__u32 padding;
	583	};
	584
2d45ba38 MS	585	struct fuse_notify_retrieve_out {
	586	__u64 notify_unique;
	587	__u64 nodeid;
	588	__u64 offset;
	589	__u32 size;
	590	__u32 padding;
	591	};
	592
	593	/* Matches the size of fuse_write_in */
	594	struct fuse_notify_retrieve_in {
	595	__u64 dummy1;
	596	__u64 offset;
	597	__u32 size;
	598	__u32 dummy2;
	599	__u64 dummy3;
	600	__u64 dummy4;
	601	};
	602
29d434b3	603	#endif /* _LINUX_FUSE_H */