7 files changed, 732 insertions, 36 deletions

diff --git a/fuse/include/fuse.h b/fuse/include/fuse.h
index 899830fb8..cad816cc4 100644
--- a/fuse/include/fuse.h
+++ b/fuse/include/fuse.h
@@ -20,7 +20,7 @@
  */
 
 #ifndef FUSE_USE_VERSION
-#define FUSE_USE_VERSION 28
+#define FUSE_USE_VERSION 21
 #endif
 
 #include "fuse_common.h"
@@ -32,6 +32,7 @@
 #include <sys/stat.h>
 #include <sys/statvfs.h>
 #include <sys/uio.h>
+#include <pthread.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -412,7 +413,7 @@ struct fuse_operations {
 	 * 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
+	 * the presence of hard links, but it's unlikely 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
@@ -434,6 +435,11 @@ struct fuse_operations {
 	 * Change the access and modification times of a file with
 	 * nanosecond resolution
 	 *
+	 * This supersedes the old utime() interface.  New applications
+	 * should use this.
+	 *
+	 * See the utimensat(2) man page for details.
+	 *
 	 * Introduced in version 2.6
 	 */
 	int (*utimens) (const char *, const struct timespec tv[2]);
@@ -449,18 +455,41 @@ struct fuse_operations {
 	int (*bmap) (const char *, size_t blocksize, uint64_t *idx);
 
 	/**
-	 * Flag indicating, that the filesystem can accept a NULL path
+	 * Flag indicating that the filesystem can accept a NULL path
 	 * as the first argument for the following operations:
 	 *
 	 * read, write, flush, release, fsync, readdir, releasedir,
-	 * fsyncdir, ftruncate, fgetattr and lock
+	 * fsyncdir, ftruncate, fgetattr, lock, ioctl and poll
+	 *
+	 * If this flag is set these operations continue to work on
+	 * unlinked files even if "-ohard_remove" option was specified.
+	 */
+	unsigned int flag_nullpath_ok:1;
+
+	/**
+	 * Flag indicating that the path need not be calculated for
+	 * the following operations:
+	 *
+	 * read, write, flush, release, fsync, readdir, releasedir,
+	 * fsyncdir, ftruncate, fgetattr, lock, ioctl and poll
+	 *
+	 * Closely related to flag_nullpath_ok, but if this flag is
+	 * set then the path will not be calculaged even if the file
+	 * wasn't unlinked.  However the path can still be non-NULL if
+	 * it needs to be calculated for some other reason.
 	 */
-	unsigned int flag_nullpath_ok : 1;
+	unsigned int flag_nopath:1;
+
+	/**
+	 * Flag indicating that the filesystem accepts special
+	 * UTIME_NOW and UTIME_OMIT values in its utimens operation.
+	 */
+	unsigned int flag_utime_omit_ok:1;
 
 	/**
 	 * Reserved flags, don't set
 	 */
-	unsigned int flag_reserved : 31;
+	unsigned int flag_reserved:29;
 
 	/**
 	 * Ioctl
@@ -496,6 +525,70 @@ struct fuse_operations {
 	 */
 	int (*poll) (const char *, struct fuse_file_info *,
 		     struct fuse_pollhandle *ph, unsigned *reventsp);
+
+	/** Write contents of buffer to an open file
+	 *
+	 * Similar to the write() method, but data is supplied in a
+	 * generic buffer.  Use fuse_buf_copy() to transfer data to
+	 * the destination.
+	 *
+	 * Introduced in version 2.9
+	 */
+	int (*write_buf) (const char *, struct fuse_bufvec *buf, off64_t off,
+			  struct fuse_file_info *);
+
+	/** Store data from an open file in a buffer
+	 *
+	 * Similar to the read() method, but data is stored and
+	 * returned in a generic buffer.
+	 *
+	 * No actual copying of data has to take place, the source
+	 * file descriptor may simply be stored in the buffer for
+	 * later data transfer.
+	 *
+	 * The buffer must be allocated dynamically and stored at the
+	 * location pointed to by bufp.  If the buffer contains memory
+	 * regions, they too must be allocated using malloc().  The
+	 * allocated memory will be freed by the caller.
+	 *
+	 * Introduced in version 2.9
+	 */
+	int (*read_buf) (const char *, struct fuse_bufvec **bufp,
+			 size_t size, off64_t off, struct fuse_file_info *);
+	/**
+	 * Perform BSD file locking operation
+	 *
+	 * The op argument will be either LOCK_SH, LOCK_EX or LOCK_UN
+	 *
+	 * Nonblocking requests will be indicated by ORing LOCK_NB to
+	 * the above operations
+	 *
+	 * For more information see the flock(2) manual page.
+	 *
+	 * Additionally fi->owner will be set to a value unique to
+	 * this open file.  This same value will be supplied to
+	 * ->release() when the file is released.
+	 *
+	 * 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 2.9
+	 */
+	int (*flock) (const char *, struct fuse_file_info *, int op);
+
+	/**
+	 * Allocates space for an open file
+	 *
+	 * This function ensures that required space is allocated for specified
+	 * file.  If this function returns success then any subsequent write
+	 * request to specified range is guaranteed not to fail because of lack
+	 * of space on the file system media.
+	 *
+	 * Introduced in version 2.9.1
+	 */
+	int (*fallocate) (const char *, int, off64_t, off64_t,
+			  struct fuse_file_info *);
 };
 
 /** Extra context that may be needed by some filesystems
@@ -671,6 +764,34 @@ int fuse_is_lib_option(const char *opt);
 int fuse_main_real(int argc, char *argv[], const struct fuse_operations *op,
 		   size_t op_size, void *user_data);
 
+/**
+ * Start the cleanup thread when using option "remember".
+ *
+ * This is done automatically by fuse_loop_mt()
+ * @param fuse struct fuse pointer for fuse instance
+ * @return 0 on success and -1 on error
+ */
+int fuse_start_cleanup_thread(struct fuse *fuse);
+
+/**
+ * Stop the cleanup thread when using option "remember".
+ *
+ * This is done automatically by fuse_loop_mt()
+ * @param fuse struct fuse pointer for fuse instance
+ */
+void fuse_stop_cleanup_thread(struct fuse *fuse);
+
+/**
+ * Iterate over cache removing stale entries
+ * use in conjunction with "-oremember"
+ *
+ * NOTE: This is already done for the standard sessions
+ *
+ * @param fuse struct fuse pointer for fuse instance
+ * @return the number of seconds until the next cleanup
+ */
+int fuse_clean_cache(struct fuse *fuse);
+
 /*
  * Stacking API
  */
@@ -707,8 +828,14 @@ 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,
 		 off64_t off, struct fuse_file_info *fi);
+int fuse_fs_read_buf(struct fuse_fs *fs, const char *path,
+		     struct fuse_bufvec **bufp, size_t size, off64_t off,
+		     struct fuse_file_info *fi);
 int fuse_fs_write(struct fuse_fs *fs, const char *path, const char *buf,
 		  size_t size, off64_t off, struct fuse_file_info *fi);
+int fuse_fs_write_buf(struct fuse_fs *fs, const char *path,
+		      struct fuse_bufvec *buf, off64_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,
@@ -727,6 +854,8 @@ 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_flock(struct fuse_fs *fs, const char *path,
+		  struct fuse_file_info *fi, int op);
 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, off64_t size);
@@ -755,6 +884,8 @@ int fuse_fs_ioctl(struct fuse_fs *fs, const char *path, int cmd, void *arg,
 int fuse_fs_poll(struct fuse_fs *fs, const char *path,
 		 struct fuse_file_info *fi, struct fuse_pollhandle *ph,
 		 unsigned *reventsp);
+int fuse_fs_fallocate(struct fuse_fs *fs, const char *path, int mode,
+		 off64_t offset, off64_t length, struct fuse_file_info *fi);
 void fuse_fs_init(struct fuse_fs *fs, struct fuse_conn_info *conn);
 void fuse_fs_destroy(struct fuse_fs *fs);
 
diff --git a/fuse/include/fuse_common.h b/fuse/include/fuse_common.h
index 48c07468d..dab3a569a 100644
--- a/fuse/include/fuse_common.h
+++ b/fuse/include/fuse_common.h
@@ -17,16 +17,16 @@
 
 #include "fuse_opt.h"
 #include <stdint.h>
+#include <sys/types.h>
 
 /** Major version of FUSE library interface */
 #define FUSE_MAJOR_VERSION 2
 
 /** Minor version of FUSE library interface */
-#define FUSE_MINOR_VERSION 8
+#define FUSE_MINOR_VERSION 9
 
 #define FUSE_MAKE_VERSION(maj, min)  ((maj) * 10 + (min))
-#define FUSE_VERSION 26
-//#define FUSE_VERSION FUSE_MAKE_VERSION(FUSE_MAJOR_VERSION, FUSE_MINOR_VERSION)
+#define FUSE_VERSION FUSE_MAKE_VERSION(FUSE_MAJOR_VERSION, FUSE_MINOR_VERSION)
 
 /* This interface uses 64 bit off64_t */
 #if _FILE_OFFSET_BITS != 64
@@ -70,8 +70,14 @@ struct fuse_file_info {
 	    seekable.  Introduced in version 2.8 */
 	unsigned int nonseekable : 1;
 
+	/* Indicates that flock locks for this file should be
+	   released.  If set, lock_owner shall contain a valid value.
+	   May only be set in ->release().  Introduced in version
+	   2.9 */
+	unsigned int flock_release : 1;
+
 	/** Padding.  Do not use*/
-	unsigned int padding : 28;
+	unsigned int padding : 27;
 
 	/** File handle.  May be filled in by filesystem in open().
 	    Available in all other file operations */
@@ -90,6 +96,10 @@ struct fuse_file_info {
  * FUSE_CAP_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
  * FUSE_CAP_BIG_WRITES: filesystem can handle write size larger than 4kB
  * FUSE_CAP_DONT_MASK: don't apply umask to file mode on create operations
+ * FUSE_CAP_SPLICE_WRITE: ability to use splice() to write to the fuse device
+ * FUSE_CAP_SPLICE_MOVE: ability to move data to the fuse device with splice()
+ * FUSE_CAP_SPLICE_READ: ability to use splice() to read from the fuse device
+ * FUSE_CAP_IOCTL_DIR: ioctl support on directories
  */
 #define FUSE_CAP_ASYNC_READ	(1 << 0)
 #define FUSE_CAP_POSIX_LOCKS	(1 << 1)
@@ -97,6 +107,11 @@ struct fuse_file_info {
 #define FUSE_CAP_EXPORT_SUPPORT	(1 << 4)
 #define FUSE_CAP_BIG_WRITES	(1 << 5)
 #define FUSE_CAP_DONT_MASK	(1 << 6)
+#define FUSE_CAP_SPLICE_WRITE	(1 << 7)
+#define FUSE_CAP_SPLICE_MOVE	(1 << 8)
+#define FUSE_CAP_SPLICE_READ	(1 << 9)
+#define FUSE_CAP_FLOCK_LOCKS	(1 << 10)
+#define FUSE_CAP_IOCTL_DIR	(1 << 11)
 
 /**
  * Ioctl flags
@@ -104,12 +119,14 @@ struct fuse_file_info {
  * 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_DIR: is a directory
  *
  * 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_DIR		(1 << 4)
 
 #define FUSE_IOCTL_MAX_IOV	256
 
@@ -157,9 +174,19 @@ struct fuse_conn_info {
 	unsigned want;
 
 	/**
+	 * Maximum number of backgrounded requests
+	 */
+	unsigned max_background;
+
+	/**
+	 * Kernel congestion threshold parameter
+	 */
+	unsigned congestion_threshold;
+
+	/**
 	 * For future use.
 	 */
-	unsigned reserved[25];
+	unsigned reserved[23];
 };
 
 struct fuse_session;
@@ -233,6 +260,186 @@ int fuse_version(void);
 void fuse_pollhandle_destroy(struct fuse_pollhandle *ph);
 
 /* ----------------------------------------------------------- *
+ * Data buffer						       *
+ * ----------------------------------------------------------- */
+
+/**
+ * Buffer flags
+ */
+enum fuse_buf_flags {
+	/**
+	 * Buffer contains a file descriptor
+	 *
+	 * If this flag is set, the .fd field is valid, otherwise the
+	 * .mem fields is valid.
+	 */
+	FUSE_BUF_IS_FD		= (1 << 1),
+
+	/**
+	 * Seek on the file descriptor
+	 *
+	 * If this flag is set then the .pos field is valid and is
+	 * used to seek to the given offset before performing
+	 * operation on file descriptor.
+	 */
+	FUSE_BUF_FD_SEEK	= (1 << 2),
+
+	/**
+	 * Retry operation on file descriptor
+	 *
+	 * If this flag is set then retry operation on file descriptor
+	 * until .size bytes have been copied or an error or EOF is
+	 * detected.
+	 */
+	FUSE_BUF_FD_RETRY	= (1 << 3),
+};
+
+/**
+ * Buffer copy flags
+ */
+enum fuse_buf_copy_flags {
+	/**
+	 * Don't use splice(2)
+	 *
+	 * Always fall back to using read and write instead of
+	 * splice(2) to copy data from one file descriptor to another.
+	 *
+	 * If this flag is not set, then only fall back if splice is
+	 * unavailable.
+	 */
+	FUSE_BUF_NO_SPLICE	= (1 << 1),
+
+	/**
+	 * Force splice
+	 *
+	 * Always use splice(2) to copy data from one file descriptor
+	 * to another.  If splice is not available, return -EINVAL.
+	 */
+	FUSE_BUF_FORCE_SPLICE	= (1 << 2),
+
+	/**
+	 * Try to move data with splice.
+	 *
+	 * If splice is used, try to move pages from the source to the
+	 * destination instead of copying.  See documentation of
+	 * SPLICE_F_MOVE in splice(2) man page.
+	 */
+	FUSE_BUF_SPLICE_MOVE	= (1 << 3),
+
+	/**
+	 * Don't block on the pipe when copying data with splice
+	 *
+	 * Makes the operations on the pipe non-blocking (if the pipe
+	 * is full or empty).  See SPLICE_F_NONBLOCK in the splice(2)
+	 * man page.
+	 */
+	FUSE_BUF_SPLICE_NONBLOCK= (1 << 4),
+};
+
+/**
+ * Single data buffer
+ *
+ * Generic data buffer for I/O, extended attributes, etc...  Data may
+ * be supplied as a memory pointer or as a file descriptor
+ */
+struct fuse_buf {
+	/**
+	 * Size of data in bytes
+	 */
+	size_t size;
+
+	/**
+	 * Buffer flags
+	 */
+	enum fuse_buf_flags flags;
+
+	/**
+	 * Memory pointer
+	 *
+	 * Used unless FUSE_BUF_IS_FD flag is set.
+	 */
+	void *mem;
+
+	/**
+	 * File descriptor
+	 *
+	 * Used if FUSE_BUF_IS_FD flag is set.
+	 */
+	int fd;
+
+	/**
+	 * File position
+	 *
+	 * Used if FUSE_BUF_FD_SEEK flag is set.
+	 */
+	off64_t pos;
+};
+
+/**
+ * Data buffer vector
+ *
+ * An array of data buffers, each containing a memory pointer or a
+ * file descriptor.
+ *
+ * Allocate dynamically to add more than one buffer.
+ */
+struct fuse_bufvec {
+	/**
+	 * Number of buffers in the array
+	 */
+	size_t count;
+
+	/**
+	 * Index of current buffer within the array
+	 */
+	size_t idx;
+
+	/**
+	 * Current offset within the current buffer
+	 */
+	size_t off;
+
+	/**
+	 * Array of buffers
+	 */
+	struct fuse_buf buf[1];
+};
+
+/* Initialize bufvec with a single buffer of given size */
+#define FUSE_BUFVEC_INIT(size__) 				\
+	((struct fuse_bufvec) {					\
+		/* .count= */ 1,				\
+		/* .idx =  */ 0,				\
+		/* .off =  */ 0,				\
+		/* .buf =  */ { /* [0] = */ {			\
+			/* .size =  */ (size__),		\
+			/* .flags = */ (enum fuse_buf_flags) 0,	\
+			/* .mem =   */ NULL,			\
+			/* .fd =    */ -1,			\
+			/* .pos =   */ 0,			\
+		} }						\
+	} )
+
+/**
+ * Get total size of data in a fuse buffer vector
+ *
+ * @param bufv buffer vector
+ * @return size of data
+ */
+size_t fuse_buf_size(const struct fuse_bufvec *bufv);
+
+/**
+ * Copy data from one buffer vector to another
+ *
+ * @param dst destination buffer vector
+ * @param src source buffer vector
+ * @param flags flags controlling the copy
+ * @return actual number of bytes copied or -errno on error
+ */
+ssize_t fuse_buf_copy(struct fuse_bufvec *dst, struct fuse_bufvec *src,
+		      enum fuse_buf_copy_flags flags);
+
+/* ----------------------------------------------------------- *
  * Signal handling					       *
  * ----------------------------------------------------------- */
 
diff --git a/fuse/include/fuse_compat.h b/fuse/include/fuse_compat.h
index 95b7c789f..d09323844 100644
--- a/fuse/include/fuse_compat.h
+++ b/fuse/include/fuse_compat.h
@@ -65,7 +65,7 @@ struct fuse *fuse_setup_compat25(int argc, char *argv[],
 
 void fuse_teardown_compat22(struct fuse *fuse, int fd, char *mountpoint);
 
-#ifndef __FreeBSD__
+#if !defined(__FreeBSD__) && !defined(__NetBSD__)
 #include <sys/statfs.h>
 
 struct fuse_operations_compat22 {
@@ -198,4 +198,4 @@ struct fuse *fuse_new_compat1(int fd, int flags,
 void fuse_main_compat1(int argc, char *argv[],
 		       const struct fuse_operations_compat1 *op);
 
-#endif /* __FreeBSD__ */
+#endif /* __FreeBSD__ || __NetBSD__ */
diff --git a/fuse/include/fuse_kernel.h b/fuse/include/fuse_kernel.h
index bd736307d..c632b58fb 100644
--- a/fuse/include/fuse_kernel.h
+++ b/fuse/include/fuse_kernel.h
@@ -56,6 +56,33 @@
  *  - 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
+ *
+ * 7.16
+ *  - add BATCH_FORGET request
+ *  - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct
+ *    fuse_ioctl_iovec' instead of ambiguous 'struct iovec'
+ *  - add FUSE_IOCTL_32BIT flag
+ *
+ * 7.17
+ *  - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK
+ *
+ * 7.18
+ *  - add FUSE_IOCTL_DIR flag
+ *  - add FUSE_NOTIFY_DELETE
+ *
+ * 7.19
+ *  - add FUSE_FALLOCATE
  */
 
 #ifndef _LINUX_FUSE_H
@@ -66,6 +93,7 @@
 #define __s64 int64_t
 #define __u32 uint32_t
 #define __s32 int32_t
+#define __u16 uint16_t
 
 /*
  * Version negotiation:
@@ -91,7 +119,7 @@
 #define FUSE_KERNEL_VERSION 7
 
 /** Minor version number of this interface */
-#define FUSE_KERNEL_MINOR_VERSION 12
+#define FUSE_KERNEL_MINOR_VERSION 19
 
 /** The node ID of the root inode */
 #define FUSE_ROOT_ID 1
@@ -166,8 +194,10 @@ struct fuse_file_lock {
 /**
  * INIT request/reply flags
  *
+ * FUSE_POSIX_LOCKS: remote locking for POSIX file locks
  * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
  * FUSE_DONT_MASK: don't apply umask to file mode on create operations
+ * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks
  */
 #define FUSE_ASYNC_READ		(1 << 0)
 #define FUSE_POSIX_LOCKS	(1 << 1)
@@ -176,6 +206,7 @@ struct fuse_file_lock {
 #define FUSE_EXPORT_SUPPORT	(1 << 4)
 #define FUSE_BIG_WRITES		(1 << 5)
 #define FUSE_DONT_MASK		(1 << 6)
+#define FUSE_FLOCK_LOCKS	(1 << 10)
 
 /**
  * CUSE INIT request/reply flags
@@ -188,6 +219,7 @@ struct fuse_file_lock {
  * Release flags
  */
 #define FUSE_RELEASE_FLUSH	(1 << 0)
+#define FUSE_RELEASE_FLOCK_UNLOCK	(1 << 1)
 
 /**
  * Getattr flags
@@ -219,12 +251,16 @@ struct fuse_file_lock {
  * 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_32BIT: 32bit ioctl
+ * FUSE_IOCTL_DIR: is a directory
  *
  * 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_32BIT	(1 << 3)
+#define FUSE_IOCTL_DIR		(1 << 4)
 
 #define FUSE_IOCTL_MAX_IOV	256
 
@@ -274,6 +310,9 @@ enum fuse_opcode {
 	FUSE_DESTROY       = 38,
 	FUSE_IOCTL         = 39,
 	FUSE_POLL          = 40,
+	FUSE_NOTIFY_REPLY  = 41,
+	FUSE_BATCH_FORGET  = 42,
+	FUSE_FALLOCATE     = 43,
 
 	/* CUSE specific operations */
 	CUSE_INIT          = 4096,
@@ -283,6 +322,9 @@ 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_DELETE = 6,
 	FUSE_NOTIFY_CODE_MAX,
 };
 
@@ -306,6 +348,16 @@ struct fuse_forget_in {
 	__u64	nlookup;
 };
 
+struct fuse_forget_one {
+	__u64	nodeid;
+	__u64	nlookup;
+};
+
+struct fuse_batch_forget_in {
+	__u32	count;
+	__u32	dummy;
+};
+
 struct fuse_getattr_in {
 	__u32	getattr_flags;
 	__u32	dummy;
@@ -477,7 +529,8 @@ struct fuse_init_out {
 	__u32	minor;
 	__u32	max_readahead;
 	__u32	flags;
-	__u32	unused;
+	__u16   max_background;
+	__u16   congestion_threshold;
 	__u32	max_write;
 };
 
@@ -525,6 +578,11 @@ struct fuse_ioctl_in {
 	__u32	out_size;
 };
 
+struct fuse_ioctl_iovec {
+	__u64	base;
+	__u64	len;
+};
+
 struct fuse_ioctl_out {
 	__s32	result;
 	__u32	flags;
@@ -548,6 +606,14 @@ struct fuse_notify_poll_wakeup_out {
 	__u64	kh;
 };
 
+struct fuse_fallocate_in {
+	__u64	fh;
+	__u64	offset;
+	__u64	length;
+	__u32	mode;
+	__u32	padding;
+};
+
 struct fuse_in_header {
 	__u32	len;
 	__u32	opcode;
@@ -570,7 +636,7 @@ struct fuse_dirent {
 	__u64	off;
 	__u32	namelen;
 	__u32	type;
-	char name[0];
+	char name[];
 };
 
 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
@@ -590,4 +656,36 @@ struct fuse_notify_inval_entry_out {
 	__u32	padding;
 };
 
+struct fuse_notify_delete_out {
+	__u64	parent;
+	__u64	child;
+	__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 */
diff --git a/fuse/include/fuse_lowlevel.h b/fuse/include/fuse_lowlevel.h
index f1cfeb954..36cf26ddf 100644
--- a/fuse/include/fuse_lowlevel.h
+++ b/fuse/include/fuse_lowlevel.h
@@ -77,9 +77,16 @@ struct fuse_entry_param {
 
 	/** Generation number for this entry.
 	 *
-	 * The ino/generation pair should be unique for the filesystem's
-	 * lifetime. It must be non-zero, otherwise FUSE will treat it as an
-	 * error.
+	 * If the file system will be exported over NFS, the
+	 * ino/generation pairs need to be unique over the file
+	 * system's lifetime (rather than just the mount time). So if
+	 * the file system reuses an inode after it has been deleted,
+	 * it must assign a new, previously unused generation number
+	 * to the inode at the same time.
+	 *
+	 * The generation must be non-zero, otherwise FUSE will treat
+	 * it as an error.
+	 *
 	 */
 	unsigned long generation;
 
@@ -114,6 +121,11 @@ struct fuse_ctx {
 	mode_t umask;
 };
 
+struct fuse_forget_data {
+	uint64_t ino;
+	uint64_t nlookup;
+};
+
 /* 'to_set' flags in setattr */
 #define FUSE_SET_ATTR_MODE	(1 << 0)
 #define FUSE_SET_ATTR_UID	(1 << 1)
@@ -188,18 +200,31 @@ struct fuse_lowlevel_ops {
 	/**
 	 * Forget about an inode
 	 *
-	 * The nlookup parameter indicates the number of lookups
-	 * previously performed on this inode.
+	 * This function is called when the kernel removes an inode
+	 * from its internal caches.
 	 *
-	 * If the filesystem implements inode lifetimes, it is recommended
-	 * that inodes acquire a single reference on each lookup, and lose
-	 * nlookup references on each forget.
+	 * The inode's lookup count increases by one for every call to
+	 * fuse_reply_entry and fuse_reply_create. The nlookup parameter
+	 * indicates by how much the lookup count should be decreased.
 	 *
-	 * The filesystem may ignore forget calls, if the inodes don't
-	 * need to have a limited lifetime.
+	 * Inodes with a non-zero lookup count may receive request from
+	 * the kernel even after calls to unlink, rmdir or (when
+	 * overwriting an existing file) rename. Filesystems must handle
+	 * such requests properly and it is recommended to defer removal
+	 * of the inode until the lookup count reaches zero. Calls to
+	 * unlink, remdir or rename will be followed closely by forget
+	 * unless the file or directory is open, in which case the
+	 * kernel issues forget only after the release or releasedir
+	 * calls.
 	 *
-	 * On unmount it is not guaranteed, that all referenced inodes
-	 * will receive a forget message.
+	 * Note that if a file system will be exported over NFS the
+	 * inodes lifetime must extend even beyond forget. See the
+	 * generation field in struct fuse_entry_param above.
+	 *
+	 * On unmount the lookup count for all inodes implicitly drops
+	 * to zero. It is not guaranteed that the file system will
+	 * receive corresponding forget messages for the affected
+	 * inodes.
 	 *
 	 * Valid replies:
 	 *   fuse_reply_none
@@ -303,6 +328,11 @@ struct fuse_lowlevel_ops {
 	/**
 	 * Remove a file
 	 *
+	 * If the file's inode's lookup count is non-zero, the file
+	 * system is expected to postpone any removal of the inode
+	 * until the lookup count reaches zero (see description of the
+	 * forget function).
+	 *
 	 * Valid replies:
 	 *   fuse_reply_err
 	 *
@@ -315,6 +345,11 @@ struct fuse_lowlevel_ops {
 	/**
 	 * Remove a directory
 	 *
+	 * If the directory's inode's lookup count is non-zero, the
+	 * file system is expected to postpone any removal of the
+	 * inode until the lookup count reaches zero (see description
+	 * of the forget function).
+	 *
 	 * Valid replies:
 	 *   fuse_reply_err
 	 *
@@ -341,6 +376,12 @@ struct fuse_lowlevel_ops {
 
 	/** Rename a file
 	 *
+	 * If the target exists it should be atomically replaced. If
+	 * the target's inode's lookup count is non-zero, the file
+	 * system is expected to postpone any removal of the inode
+	 * until the lookup count reaches zero (see description of the
+	 * forget function).
+	 *
 	 * Valid replies:
 	 *   fuse_reply_err
 	 *
@@ -412,6 +453,7 @@ struct fuse_lowlevel_ops {
 	 * Valid replies:
 	 *   fuse_reply_buf
 	 *   fuse_reply_iov
+	 *   fuse_reply_data
 	 *   fuse_reply_err
 	 *
 	 * @param req request handle
@@ -561,6 +603,7 @@ struct fuse_lowlevel_ops {
 	 *
 	 * Valid replies:
 	 *   fuse_reply_buf
+	 *   fuse_reply_data
 	 *   fuse_reply_err
 	 *
 	 * @param req request handle
@@ -646,6 +689,7 @@ struct fuse_lowlevel_ops {
 	 *
 	 * Valid replies:
 	 *   fuse_reply_buf
+	 *   fuse_reply_data
 	 *   fuse_reply_xattr
 	 *   fuse_reply_err
 	 *
@@ -672,6 +716,7 @@ struct fuse_lowlevel_ops {
 	 *
 	 * Valid replies:
 	 *   fuse_reply_buf
+	 *   fuse_reply_data
 	 *   fuse_reply_xattr
 	 *   fuse_reply_err
 	 *
@@ -787,7 +832,7 @@ struct fuse_lowlevel_ops {
 	 * @param req request handle
 	 * @param ino the inode number
 	 * @param fi file information
-	 * @param lock the region/type to test
+	 * @param lock the region/type to set
 	 * @param sleep locking operation may sleep
 	 */
 	void (*setlk) (fuse_req_t req, fuse_ino_t ino,
@@ -873,6 +918,104 @@ struct fuse_lowlevel_ops {
 	 */
 	void (*poll) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi,
 		      struct fuse_pollhandle *ph);
+
+	/**
+	 * Write data made available in a buffer
+	 *
+	 * This is a more generic version of the ->write() method.  If
+	 * FUSE_CAP_SPLICE_READ is set in fuse_conn_info.want and the
+	 * kernel supports splicing from the fuse device, then the
+	 * data will be made available in pipe for supporting zero
+	 * copy data transfer.
+	 *
+	 * Introduced in version 2.9
+	 *
+	 * Valid replies:
+	 *   fuse_reply_write
+	 *   fuse_reply_err
+	 *
+	 * @param req request handle
+	 * @param ino the inode number
+	 * @param bufv buffer containing the data
+	 * @param off offset to write to
+	 * @param fi file information
+	 */
+	void (*write_buf) (fuse_req_t req, fuse_ino_t ino,
+			   struct fuse_bufvec *bufv, off64_t off,
+			   struct fuse_file_info *fi);
+
+	/**
+	 * Callback function for the retrieve request
+	 *
+	 * Introduced in version 2.9
+	 *
+	 * Valid replies:
+	 *	fuse_reply_none
+	 *
+	 * @param req request handle
+	 * @param cookie user data supplied to fuse_lowlevel_notify_retrieve()
+	 * @param ino the inode number supplied to fuse_lowlevel_notify_retrieve()
+	 * @param offset the offset supplied to fuse_lowlevel_notify_retrieve()
+	 * @param bufv the buffer containing the returned data
+	 */
+	void (*retrieve_reply) (fuse_req_t req, void *cookie, fuse_ino_t ino,
+				off64_t offset, struct fuse_bufvec *bufv);
+
+	/**
+	 * Forget about multiple inodes
+	 *
+	 * See description of the forget function for more
+	 * information.
+	 *
+	 * Introduced in version 2.9
+	 *
+	 * Valid replies:
+	 *   fuse_reply_none
+	 *
+	 * @param req request handle
+	 */
+	void (*forget_multi) (fuse_req_t req, size_t count,
+			      struct fuse_forget_data *forgets);
+
+	/**
+	 * Acquire, modify or release a BSD file lock
+	 *
+	 * Note: if the locking methods are not implemented, the kernel
+	 * will still allow file locking to work locally.  Hence these are
+	 * only interesting for network filesystems and similar.
+	 *
+	 * Introduced in version 2.9
+	 *
+	 * Valid replies:
+	 *   fuse_reply_err
+	 *
+	 * @param req request handle
+	 * @param ino the inode number
+	 * @param fi file information
+	 * @param op the locking operation, see flock(2)
+	 */
+	void (*flock) (fuse_req_t req, fuse_ino_t ino,
+		       struct fuse_file_info *fi, int op);
+
+	/**
+	 * Allocate requested space. If this function returns success then
+	 * subsequent writes to the specified range shall not fail due to the lack
+	 * of free space on the file system storage media.
+	 *
+	 * Introduced in version 2.9
+	 *
+	 * Valid replies:
+	 *   fuse_reply_err
+	 *
+	 * @param req request handle
+	 * @param ino the inode number
+	 * @param offset starting point for allocated region
+	 * @param length size of allocated region
+	 * @param mode determines the operation to be performed on the given range,
+	 *             see fallocate(2)
+	 */
+	void (*fallocate) (fuse_req_t req, fuse_ino_t ino, int mode,
+		       off64_t offset, off64_t length, struct fuse_file_info *fi);
 };
 
 /**
@@ -906,6 +1049,9 @@ void fuse_reply_none(fuse_req_t req);
  * Possible requests:
  *   lookup, mknod, mkdir, symlink, link
  *
+ * Side effects:
+ *   increments the lookup count on success
+ *
  * @param req request handle
  * @param e the entry parameters
  * @return zero for success, -errno for failure to send reply
@@ -921,6 +1067,9 @@ int fuse_reply_entry(fuse_req_t req, const struct fuse_entry_param *e);
  * Possible requests:
  *   create
  *
+ * Side effects:
+ *   increments the lookup count on success
+ *
  * @param req request handle
  * @param e the entry parameters
  * @param fi file information
@@ -996,6 +1145,20 @@ int fuse_reply_write(fuse_req_t req, size_t count);
 int fuse_reply_buf(fuse_req_t req, const char *buf, size_t size);
 
 /**
+ * Reply with data copied/moved from buffer(s)
+ *
+ * Possible requests:
+ *   read, readdir, getxattr, listxattr
+ *
+ * @param req request handle
+ * @param bufv buffer vector
+ * @param flags flags controlling the copy
+ * @return zero for success, -errno for failure to send reply
+ */
+int fuse_reply_data(fuse_req_t req, struct fuse_bufvec *bufv,
+		    enum fuse_buf_copy_flags flags);
+
+/**
  * Reply with data vector
  *
  * Possible requests:
@@ -1042,7 +1205,7 @@ int fuse_reply_xattr(fuse_req_t req, size_t count);
  * @param lock the lock information
  * @return zero for success, -errno for failure to send reply
  */
-int fuse_reply_lock(fuse_req_t req, struct flock *lock);
+int fuse_reply_lock(fuse_req_t req, const struct flock *lock);
 
 /**
  * Reply with block index
@@ -1181,6 +1344,75 @@ int fuse_lowlevel_notify_inval_inode(struct fuse_chan *ch, fuse_ino_t ino,
 int fuse_lowlevel_notify_inval_entry(struct fuse_chan *ch, fuse_ino_t parent,
                                      const char *name, size_t namelen);
 
+/**
+ * Notify to invalidate parent attributes and delete the dentry matching
+ * parent/name if the dentry's inode number matches child (otherwise it
+ * will invalidate the matching dentry).
+ *
+ * @param ch the channel through which to send the notification
+ * @param parent inode number
+ * @param child inode number
+ * @param name file name
+ * @param namelen strlen() of file name
+ * @return zero for success, -errno for failure
+ */
+int fuse_lowlevel_notify_delete(struct fuse_chan *ch,
+				fuse_ino_t parent, fuse_ino_t child,
+				const char *name, size_t namelen);
+
+/**
+ * Store data to the kernel buffers
+ *
+ * Synchronously store data in the kernel buffers belonging to the
+ * given inode.  The stored data is marked up-to-date (no read will be
+ * performed against it, unless it's invalidated or evicted from the
+ * cache).
+ *
+ * If the stored data overflows the current file size, then the size
+ * is extended, similarly to a write(2) on the filesystem.
+ *
+ * If this function returns an error, then the store wasn't fully
+ * completed, but it may have been partially completed.
+ *
+ * @param ch the channel through which to send the invalidation
+ * @param ino the inode number
+ * @param offset the starting offset into the file to store to
+ * @param bufv buffer vector
+ * @param flags flags controlling the copy
+ * @return zero for success, -errno for failure
+ */
+int fuse_lowlevel_notify_store(struct fuse_chan *ch, fuse_ino_t ino,
+			       off64_t offset, struct fuse_bufvec *bufv,
+			       enum fuse_buf_copy_flags flags);
+/**
+ * Retrieve data from the kernel buffers
+ *
+ * Retrieve data in the kernel buffers belonging to the given inode.
+ * If successful then the retrieve_reply() method will be called with
+ * the returned data.
+ *
+ * Only present pages are returned in the retrieve reply.  Retrieving
+ * stops when it finds a non-present page and only data prior to that is
+ * returned.
+ *
+ * If this function returns an error, then the retrieve will not be
+ * completed and no reply will be sent.
+ *
+ * This function doesn't change the dirty state of pages in the kernel
+ * buffer.  For dirty pages the write() method will be called
+ * regardless of having been retrieved previously.
+ *
+ * @param ch the channel through which to send the invalidation
+ * @param ino the inode number
+ * @param size the number of bytes to retrieve
+ * @param offset the starting offset into the file to retrieve from
+ * @param cookie user data to supply to the reply callback
+ * @return zero for success, -errno for failure
+ */
+int fuse_lowlevel_notify_retrieve(struct fuse_chan *ch, fuse_ino_t ino,
+				  size_t size, off64_t offset, void *cookie);
+
+
 /* ----------------------------------------------------------- *
  * Utility functions					       *
  * ----------------------------------------------------------- */
@@ -1377,6 +1609,34 @@ void fuse_session_process(struct fuse_session *se, const char *buf, size_t len,
 			  struct fuse_chan *ch);
 
 /**
+ * Process a raw request supplied in a generic buffer
+ *
+ * This is a more generic version of fuse_session_process().  The
+ * fuse_buf may contain a memory buffer or a pipe file descriptor.
+ *
+ * @param se the session
+ * @param buf the fuse_buf containing the request
+ * @param ch channel on which the request was received
+ */
+void fuse_session_process_buf(struct fuse_session *se,
+			      const struct fuse_buf *buf, struct fuse_chan *ch);
+
+/**
+ * Receive a raw request supplied in a generic buffer
+ *
+ * This is a more generic version of fuse_chan_recv().  The fuse_buf
+ * supplied to this function contains a suitably allocated memory
+ * buffer.  This may be overwritten with a file descriptor buffer.
+ *
+ * @param se the session
+ * @param buf the fuse_buf to store the request in
+ * @param chp pointer to the channel
+ * @return the actual size of the raw request, or -errno on error
+ */
+int fuse_session_receive_buf(struct fuse_session *se, struct fuse_buf *buf,
+			     struct fuse_chan **chp);
+
+/**
  * Destroy a session
  *
  * @param se the session
diff --git a/fuse/include/fuse_lowlevel_compat.h b/fuse/include/fuse_lowlevel_compat.h
index 3d2902d7e..78b7c2bd0 100644
--- a/fuse/include/fuse_lowlevel_compat.h
+++ b/fuse/include/fuse_lowlevel_compat.h
@@ -72,7 +72,7 @@ size_t fuse_dirent_size(size_t namelen);
 char *fuse_add_dirent(char *buf, const char *name, const struct stat *stbuf,
 		      off64_t off);
 
-#ifndef __FreeBSD__
+#if !defined(__FreeBSD__) && !defined(__NetBSD__)
 
 #include <sys/statfs.h>
 
@@ -139,7 +139,7 @@ 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__ */
+#endif /* __FreeBSD__ || __NetBSD__ */
 
 struct fuse_chan_ops_compat24 {
 	int (*receive)(struct fuse_chan *ch, char *buf, size_t size);
diff --git a/fuse/include/fuse_opt.h b/fuse/include/fuse_opt.h
index 8c08d779a..add0a3089 100644
--- a/fuse/include/fuse_opt.h
+++ b/fuse/include/fuse_opt.h
@@ -21,7 +21,7 @@ extern "C" {
 /**
  * Option description
  *
- * This structure describes a single option, and and action associated
+ * This structure describes a single option, and action associated
  * with it, in case it matches.
  *
  * More than one such match may occur, in which case the action for
@@ -130,7 +130,7 @@ struct fuse_args {
 /**
  * Key value passed to the processing function for all non-options
  *
- * Non-options are the arguments beginning with a charater other than
+ * Non-options are the arguments beginning with a character other than
  * '-' or all arguments after the special '--' option
  */
 #define FUSE_OPT_KEY_NONOPT  -2
@@ -161,7 +161,7 @@ struct fuse_args {
  *
  * 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
+ * ("-x foo") is always converted to single argument option of the
  * form "-xfoo" before this function is called.
  *
  * Options of the form '-ofoo' are passed to this function without the
@@ -234,7 +234,7 @@ int fuse_opt_add_arg(struct fuse_args *args, const char *arg);
  * 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
+ * options at the beginning of the array which must not come after the
  * special '--' option.
  *
  * @param args is the structure containing the current argument list