Merge branch 'for-3.7' of git://linux-nfs.org/~bfields/linux

Pull nfsd update from J Bruce Fields:
 "Another relatively quiet cycle.  There was some progress on my
  remaining 4.1 todo's, but a couple of them were just of the form
  "check that we do X correctly", so didn't have much affect on the
  code.

  Other than that, a bunch of cleanup and some bugfixes (including an
  annoying NFSv4.0 state leak and a busy-loop in the server that could
  cause it to peg the CPU without making progress)."

* 'for-3.7' of git://linux-nfs.org/~bfields/linux: (46 commits)
  UAPI: (Scripted) Disintegrate include/linux/sunrpc
  UAPI: (Scripted) Disintegrate include/linux/nfsd
  nfsd4: don't allow reclaims of expired clients
  nfsd4: remove redundant callback probe
  nfsd4: expire old client earlier
  nfsd4: separate session allocation and initialization
  nfsd4: clean up session allocation
  nfsd4: minor free_session cleanup
  nfsd4: new_conn_from_crses should only allocate
  nfsd4: separate connection allocation and initialization
  nfsd4: reject bad forechannel attrs earlier
  nfsd4: enforce per-client sessions/no-sessions distinction
  nfsd4: set cl_minorversion at create time
  nfsd4: don't pin clientids to pseudoflavors
  nfsd4: fix bind_conn_to_session xdr comment
  nfsd4: cast readlink() bug argument
  NFSD: pass null terminated buf to kstrtouint()
  nfsd: remove duplicate init in nfsd4_cb_recall
  nfsd4: eliminate redundant nfs4_free_stateid
  fs/nfsd/nfs4idmap.c: adjust inconsistent IS_ERR and PTR_ERR
  ...

17 files changed, 298 insertions, 248 deletions

diff --git a/include/linux/nfsd/Kbuild b/include/linux/nfsd/Kbuild
index 5b7d84ac954..e69de29bb2d 100644
--- a/include/linux/nfsd/Kbuild
+++ b/include/linux/nfsd/Kbuild
@@ -1,5 +0,0 @@
-header-y += cld.h
-header-y += debug.h
-header-y += export.h
-header-y += nfsfh.h
-header-y += stats.h
diff --git a/include/linux/nfsd/debug.h b/include/linux/nfsd/debug.h
index ee4aa91788e..19ef8375b57 100644
--- a/include/linux/nfsd/debug.h
+++ b/include/linux/nfsd/debug.h
@@ -5,44 +5,15 @@
  *
  * Copyright (C) 1995 Olaf Kirch <okir@monad.swb.de>
  */
-
 #ifndef LINUX_NFSD_DEBUG_H
 #define LINUX_NFSD_DEBUG_H
 
-#include <linux/sunrpc/debug.h>
+#include <uapi/linux/nfsd/debug.h>
 
-/*
- * Enable debugging for nfsd.
- * Requires RPC_DEBUG.
- */
-#ifdef RPC_DEBUG
-# define NFSD_DEBUG		1
-#endif
-
-/*
- * knfsd debug flags
- */
-#define NFSDDBG_SOCK		0x0001
-#define NFSDDBG_FH		0x0002
-#define NFSDDBG_EXPORT		0x0004
-#define NFSDDBG_SVC		0x0008
-#define NFSDDBG_PROC		0x0010
-#define NFSDDBG_FILEOP		0x0020
-#define NFSDDBG_AUTH		0x0040
-#define NFSDDBG_REPCACHE	0x0080
-#define NFSDDBG_XDR		0x0100
-#define NFSDDBG_LOCKD		0x0200
-#define NFSDDBG_ALL		0x7FFF
-#define NFSDDBG_NOCHANGE	0xFFFF
-
-
-#ifdef __KERNEL__
 # undef ifdebug
 # ifdef NFSD_DEBUG
 #  define ifdebug(flag)		if (nfsd_debug & NFSDDBG_##flag)
 # else
 #  define ifdebug(flag)		if (0)
 # endif
-#endif /* __KERNEL__ */
-
 #endif /* LINUX_NFSD_DEBUG_H */
diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h
index e33f747b173..24c139288db 100644
--- a/include/linux/nfsd/export.h
+++ b/include/linux/nfsd/export.h
@@ -6,58 +6,11 @@
  *
  * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
  */
-
 #ifndef NFSD_EXPORT_H
 #define NFSD_EXPORT_H
 
-# include <linux/types.h>
-#ifdef __KERNEL__
 # include <linux/nfsd/nfsfh.h>
-#endif
-
-/*
- * Important limits for the exports stuff.
- */
-#define NFSCLNT_IDMAX		1024
-#define NFSCLNT_ADDRMAX		16
-#define NFSCLNT_KEYMAX		32
-
-/*
- * Export flags.
- */
-#define NFSEXP_READONLY		0x0001
-#define NFSEXP_INSECURE_PORT	0x0002
-#define NFSEXP_ROOTSQUASH	0x0004
-#define NFSEXP_ALLSQUASH	0x0008
-#define NFSEXP_ASYNC		0x0010
-#define NFSEXP_GATHERED_WRITES	0x0020
-/* 40 80 100 currently unused */
-#define NFSEXP_NOHIDE		0x0200
-#define NFSEXP_NOSUBTREECHECK	0x0400
-#define	NFSEXP_NOAUTHNLM	0x0800		/* Don't authenticate NLM requests - just trust */
-#define NFSEXP_MSNFS		0x1000	/* do silly things that MS clients expect; no longer supported */
-#define NFSEXP_FSID		0x2000
-#define	NFSEXP_CROSSMOUNT	0x4000
-#define	NFSEXP_NOACL		0x8000	/* reserved for possible ACL related use */
-/*
- * The NFSEXP_V4ROOT flag causes the kernel to give access only to NFSv4
- * clients, and only to the single directory that is the root of the
- * export; further lookup and readdir operations are treated as if every
- * subdirectory was a mountpoint, and ignored if they are not themselves
- * exported.  This is used by nfsd and mountd to construct the NFSv4
- * pseudofilesystem, which provides access only to paths leading to each
- * exported filesystem.
- */
-#define	NFSEXP_V4ROOT		0x10000
-/* All flags that we claim to support.  (Note we don't support NOACL.) */
-#define NFSEXP_ALLFLAGS		0x17E3F
-
-/* The flags that may vary depending on security flavor: */
-#define NFSEXP_SECINFO_FLAGS	(NFSEXP_READONLY | NFSEXP_ROOTSQUASH \
-					| NFSEXP_ALLSQUASH \
-					| NFSEXP_INSECURE_PORT)
-
-#ifdef __KERNEL__
+#include <uapi/linux/nfsd/export.h>
 
 /*
  * FS Locations
@@ -154,7 +107,4 @@ static inline void exp_get(struct svc_export *exp)
 }
 struct svc_export * rqst_exp_find(struct svc_rqst *, int, u32 *);
 
-#endif /* __KERNEL__ */
-
 #endif /* NFSD_EXPORT_H */
-
diff --git a/include/linux/nfsd/nfsfh.h b/include/linux/nfsd/nfsfh.h
index fa63048fecf..a93593f1fa4 100644
--- a/include/linux/nfsd/nfsfh.h
+++ b/include/linux/nfsd/nfsfh.h
@@ -10,117 +10,11 @@
  *
  * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
  */
-
 #ifndef _LINUX_NFSD_FH_H
 #define _LINUX_NFSD_FH_H
 
-#include <linux/types.h>
-#include <linux/nfs.h>
-#include <linux/nfs2.h>
-#include <linux/nfs3.h>
-#include <linux/nfs4.h>
-#ifdef __KERNEL__
 # include <linux/sunrpc/svc.h>
-#endif
-
-/*
- * This is the old "dentry style" Linux NFSv2 file handle.
- *
- * The xino and xdev fields are currently used to transport the
- * ino/dev of the exported inode.
- */
-struct nfs_fhbase_old {
-	__u32		fb_dcookie;	/* dentry cookie - always 0xfeebbaca */
-	__u32		fb_ino;		/* our inode number */
-	__u32		fb_dirino;	/* dir inode number, 0 for directories */
-	__u32		fb_dev;		/* our device */
-	__u32		fb_xdev;
-	__u32		fb_xino;
-	__u32		fb_generation;
-};
-
-/*
- * This is the new flexible, extensible style NFSv2/v3 file handle.
- * by Neil Brown <neilb@cse.unsw.edu.au> - March 2000
- *
- * The file handle starts with a sequence of four-byte words.
- * The first word contains a version number (1) and three descriptor bytes
- * that tell how the remaining 3 variable length fields should be handled.
- * These three bytes are auth_type, fsid_type and fileid_type.
- *
- * All four-byte values are in host-byte-order.
- *
- * The auth_type field specifies how the filehandle can be authenticated
- * This might allow a file to be confirmed to be in a writable part of a
- * filetree without checking the path from it up to the root.
- * Current values:
- *     0  - No authentication.  fb_auth is 0 bytes long
- * Possible future values:
- *     1  - 4 bytes taken from MD5 hash of the remainer of the file handle
- *          prefixed by a secret and with the important export flags.
- *
- * The fsid_type identifies how the filesystem (or export point) is
- *    encoded.
- *  Current values:
- *     0  - 4 byte device id (ms-2-bytes major, ls-2-bytes minor), 4byte inode number
- *        NOTE: we cannot use the kdev_t device id value, because kdev_t.h
- *              says we mustn't.  We must break it up and reassemble.
- *     1  - 4 byte user specified identifier
- *     2  - 4 byte major, 4 byte minor, 4 byte inode number - DEPRECATED
- *     3  - 4 byte device id, encoded for user-space, 4 byte inode number
- *     4  - 4 byte inode number and 4 byte uuid
- *     5  - 8 byte uuid
- *     6  - 16 byte uuid
- *     7  - 8 byte inode number and 16 byte uuid
- *
- * The fileid_type identified how the file within the filesystem is encoded.
- * This is (will be) passed to, and set by, the underlying filesystem if it supports
- * filehandle operations.  The filesystem must not use the value '0' or '0xff' and may
- * only use the values 1 and 2 as defined below:
- *  Current values:
- *    0   - The root, or export point, of the filesystem.  fb_fileid is 0 bytes.
- *    1   - 32bit inode number, 32 bit generation number.
- *    2   - 32bit inode number, 32 bit generation number, 32 bit parent directory inode number.
- *
- */
-struct nfs_fhbase_new {
-	__u8		fb_version;	/* == 1, even => nfs_fhbase_old */
-	__u8		fb_auth_type;
-	__u8		fb_fsid_type;
-	__u8		fb_fileid_type;
-	__u32		fb_auth[1];
-/*	__u32		fb_fsid[0]; floating */
-/*	__u32		fb_fileid[0]; floating */
-};
-
-struct knfsd_fh {
-	unsigned int	fh_size;	/* significant for NFSv3.
-					 * Points to the current size while building
-					 * a new file handle
-					 */
-	union {
-		struct nfs_fhbase_old	fh_old;
-		__u32			fh_pad[NFS4_FHSIZE/4];
-		struct nfs_fhbase_new	fh_new;
-	} fh_base;
-};
-
-#define ofh_dcookie		fh_base.fh_old.fb_dcookie
-#define ofh_ino			fh_base.fh_old.fb_ino
-#define ofh_dirino		fh_base.fh_old.fb_dirino
-#define ofh_dev			fh_base.fh_old.fb_dev
-#define ofh_xdev		fh_base.fh_old.fb_xdev
-#define ofh_xino		fh_base.fh_old.fb_xino
-#define ofh_generation		fh_base.fh_old.fb_generation
-
-#define	fh_version		fh_base.fh_new.fb_version
-#define	fh_fsid_type		fh_base.fh_new.fb_fsid_type
-#define	fh_auth_type		fh_base.fh_new.fb_auth_type
-#define	fh_fileid_type		fh_base.fh_new.fb_fileid_type
-#define	fh_auth			fh_base.fh_new.fb_auth
-#define	fh_fsid			fh_base.fh_new.fb_auth
-
-#ifdef __KERNEL__
+#include <uapi/linux/nfsd/nfsfh.h>
 
 static inline __u32 ino_t_to_u32(ino_t ino)
 {
@@ -166,7 +60,4 @@ typedef struct svc_fh {
 
 } svc_fh;
 
-#endif /* __KERNEL__ */
-
-
 #endif /* _LINUX_NFSD_FH_H */
diff --git a/include/linux/nfsd/stats.h b/include/linux/nfsd/stats.h
index 2693ef647df..e75b2544ff1 100644
--- a/include/linux/nfsd/stats.h
+++ b/include/linux/nfsd/stats.h
@@ -5,16 +5,11 @@
  *
  * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
  */
-
 #ifndef LINUX_NFSD_STATS_H
 #define LINUX_NFSD_STATS_H
 
-#include <linux/nfs4.h>
-
-/* thread usage wraps very million seconds (approx one fortnight) */
-#define	NFSD_USAGE_WRAP	(HZ*1000000)
+#include <uapi/linux/nfsd/stats.h>
 
-#ifdef __KERNEL__
 
 struct nfsd_stats {
 	unsigned int	rchits;		/* repcache hits */
@@ -47,5 +42,4 @@ extern struct svc_stat		nfsd_svcstats;
 void	nfsd_stat_init(void);
 void	nfsd_stat_shutdown(void);
 
-#endif /* __KERNEL__ */
 #endif /* LINUX_NFSD_STATS_H */
diff --git a/include/linux/sunrpc/Kbuild b/include/linux/sunrpc/Kbuild
index 98df21164a8..e69de29bb2d 100644
--- a/include/linux/sunrpc/Kbuild
+++ b/include/linux/sunrpc/Kbuild
@@ -1 +0,0 @@
-header-y += debug.h
diff --git a/include/linux/sunrpc/debug.h b/include/linux/sunrpc/debug.h
index a76cc20d98c..9385bd74c86 100644
--- a/include/linux/sunrpc/debug.h
+++ b/include/linux/sunrpc/debug.h
@@ -5,28 +5,11 @@
  *
  * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
  */
-
 #ifndef _LINUX_SUNRPC_DEBUG_H_
 #define _LINUX_SUNRPC_DEBUG_H_
 
-/*
- * RPC debug facilities
- */
-#define RPCDBG_XPRT		0x0001
-#define RPCDBG_CALL		0x0002
-#define RPCDBG_DEBUG		0x0004
-#define RPCDBG_NFS		0x0008
-#define RPCDBG_AUTH		0x0010
-#define RPCDBG_BIND		0x0020
-#define RPCDBG_SCHED		0x0040
-#define RPCDBG_TRANS		0x0080
-#define RPCDBG_SVCXPRT		0x0100
-#define RPCDBG_SVCDSP		0x0200
-#define RPCDBG_MISC		0x0400
-#define RPCDBG_CACHE		0x0800
-#define RPCDBG_ALL		0x7fff
+#include <uapi/linux/sunrpc/debug.h>
 
-#ifdef __KERNEL__
 
 /*
  * Enable RPC debugging/profiling.
@@ -87,24 +70,4 @@ void		rpc_register_sysctl(void);
 void		rpc_unregister_sysctl(void);
 #endif
 
-#endif /* __KERNEL__ */
-
-/*
- * Declarations for the sysctl debug interface, which allows to read or
- * change the debug flags for rpc, nfs, nfsd, and lockd. Since the sunrpc
- * module currently registers its sysctl table dynamically, the sysctl path
- * for module FOO is <CTL_SUNRPC, CTL_FOODEBUG>.
- */
-
-enum {
-	CTL_RPCDEBUG = 1,
-	CTL_NFSDEBUG,
-	CTL_NFSDDEBUG,
-	CTL_NLMDEBUG,
-	CTL_SLOTTABLE_UDP,
-	CTL_SLOTTABLE_TCP,
-	CTL_MIN_RESVPORT,
-	CTL_MAX_RESVPORT,
-};
-
 #endif /* _LINUX_SUNRPC_DEBUG_H_ */
diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h
index b3f64b12f14..b05963f09eb 100644
--- a/include/linux/sunrpc/svc_xprt.h
+++ b/include/linux/sunrpc/svc_xprt.h
@@ -114,7 +114,6 @@ void	svc_xprt_init(struct net *, struct svc_xprt_class *, struct svc_xprt *,
 int	svc_create_xprt(struct svc_serv *, const char *, struct net *,
 			const int, const unsigned short, int);
 void	svc_xprt_enqueue(struct svc_xprt *xprt);
-void	svc_xprt_received(struct svc_xprt *);
 void	svc_xprt_put(struct svc_xprt *xprt);
 void	svc_xprt_copy_addrs(struct svc_rqst *rqstp, struct svc_xprt *xprt);
 void	svc_close_xprt(struct svc_xprt *xprt);
@@ -124,6 +123,7 @@ struct	svc_xprt *svc_find_xprt(struct svc_serv *serv, const char *xcl_name,
 			struct net *net, const sa_family_t af,
 			const unsigned short port);
 int	svc_xprt_names(struct svc_serv *serv, char *buf, const int buflen);
+void	svc_add_new_perm_xprt(struct svc_serv *serv, struct svc_xprt *xprt);
 
 static inline void svc_xprt_get(struct svc_xprt *xprt)
 {
@@ -166,8 +166,7 @@ static inline size_t svc_addr_len(const struct sockaddr *sa)
 	case AF_INET6:
 		return sizeof(struct sockaddr_in6);
 	}
-
-	return 0;
+	BUG();
 }
 
 static inline unsigned short svc_xprt_local_port(const struct svc_xprt *xprt)
diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h
index cb4ac69e1f3..92ad02f0dcc 100644
--- a/include/linux/sunrpc/svcsock.h
+++ b/include/linux/sunrpc/svcsock.h
@@ -39,9 +39,6 @@ int		svc_recv(struct svc_rqst *, long);
 int		svc_send(struct svc_rqst *);
 void		svc_drop(struct svc_rqst *);
 void		svc_sock_update_bufs(struct svc_serv *serv);
-int		svc_sock_names(struct svc_serv *serv, char *buf,
-					const size_t buflen,
-					const char *toclose);
 int		svc_addsock(struct svc_serv *serv, const int fd,
 					char *name_return, const size_t len);
 void		svc_init_xprt_sock(void);
diff --git a/include/uapi/linux/nfsd/Kbuild b/include/uapi/linux/nfsd/Kbuild
index aafaa5aa54d..c11bc404053 100644
--- a/include/uapi/linux/nfsd/Kbuild
+++ b/include/uapi/linux/nfsd/Kbuild
@@ -1 +1,6 @@
 # UAPI Header export list
+header-y += cld.h
+header-y += debug.h
+header-y += export.h
+header-y += nfsfh.h
+header-y += stats.h
diff --git a/include/linux/nfsd/cld.h b/include/uapi/linux/nfsd/cld.h
index f14a9ab06f1..f14a9ab06f1 100644
--- a/include/linux/nfsd/cld.h
+++ b/include/uapi/linux/nfsd/cld.h
diff --git a/include/uapi/linux/nfsd/debug.h b/include/uapi/linux/nfsd/debug.h
new file mode 100644
index 00000000000..a6f453c740b
--- /dev/null
+++ b/include/uapi/linux/nfsd/debug.h
@@ -0,0 +1,40 @@
+/*
+ * linux/include/linux/nfsd/debug.h
+ *
+ * Debugging-related stuff for nfsd
+ *
+ * Copyright (C) 1995 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef _UAPILINUX_NFSD_DEBUG_H
+#define _UAPILINUX_NFSD_DEBUG_H
+
+#include <linux/sunrpc/debug.h>
+
+/*
+ * Enable debugging for nfsd.
+ * Requires RPC_DEBUG.
+ */
+#ifdef RPC_DEBUG
+# define NFSD_DEBUG		1
+#endif
+
+/*
+ * knfsd debug flags
+ */
+#define NFSDDBG_SOCK		0x0001
+#define NFSDDBG_FH		0x0002
+#define NFSDDBG_EXPORT		0x0004
+#define NFSDDBG_SVC		0x0008
+#define NFSDDBG_PROC		0x0010
+#define NFSDDBG_FILEOP		0x0020
+#define NFSDDBG_AUTH		0x0040
+#define NFSDDBG_REPCACHE	0x0080
+#define NFSDDBG_XDR		0x0100
+#define NFSDDBG_LOCKD		0x0200
+#define NFSDDBG_ALL		0x7FFF
+#define NFSDDBG_NOCHANGE	0xFFFF
+
+
+
+#endif /* _UAPILINUX_NFSD_DEBUG_H */
diff --git a/include/uapi/linux/nfsd/export.h b/include/uapi/linux/nfsd/export.h
new file mode 100644
index 00000000000..cf47c313794
--- /dev/null
+++ b/include/uapi/linux/nfsd/export.h
@@ -0,0 +1,58 @@
+/*
+ * include/linux/nfsd/export.h
+ * 
+ * Public declarations for NFS exports. The definitions for the
+ * syscall interface are in nfsctl.h
+ *
+ * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef _UAPINFSD_EXPORT_H
+#define _UAPINFSD_EXPORT_H
+
+# include <linux/types.h>
+
+/*
+ * Important limits for the exports stuff.
+ */
+#define NFSCLNT_IDMAX		1024
+#define NFSCLNT_ADDRMAX		16
+#define NFSCLNT_KEYMAX		32
+
+/*
+ * Export flags.
+ */
+#define NFSEXP_READONLY		0x0001
+#define NFSEXP_INSECURE_PORT	0x0002
+#define NFSEXP_ROOTSQUASH	0x0004
+#define NFSEXP_ALLSQUASH	0x0008
+#define NFSEXP_ASYNC		0x0010
+#define NFSEXP_GATHERED_WRITES	0x0020
+/* 40 80 100 currently unused */
+#define NFSEXP_NOHIDE		0x0200
+#define NFSEXP_NOSUBTREECHECK	0x0400
+#define	NFSEXP_NOAUTHNLM	0x0800		/* Don't authenticate NLM requests - just trust */
+#define NFSEXP_MSNFS		0x1000	/* do silly things that MS clients expect; no longer supported */
+#define NFSEXP_FSID		0x2000
+#define	NFSEXP_CROSSMOUNT	0x4000
+#define	NFSEXP_NOACL		0x8000	/* reserved for possible ACL related use */
+/*
+ * The NFSEXP_V4ROOT flag causes the kernel to give access only to NFSv4
+ * clients, and only to the single directory that is the root of the
+ * export; further lookup and readdir operations are treated as if every
+ * subdirectory was a mountpoint, and ignored if they are not themselves
+ * exported.  This is used by nfsd and mountd to construct the NFSv4
+ * pseudofilesystem, which provides access only to paths leading to each
+ * exported filesystem.
+ */
+#define	NFSEXP_V4ROOT		0x10000
+/* All flags that we claim to support.  (Note we don't support NOACL.) */
+#define NFSEXP_ALLFLAGS		0x17E3F
+
+/* The flags that may vary depending on security flavor: */
+#define NFSEXP_SECINFO_FLAGS	(NFSEXP_READONLY | NFSEXP_ROOTSQUASH \
+					| NFSEXP_ALLSQUASH \
+					| NFSEXP_INSECURE_PORT)
+
+
+#endif /* _UAPINFSD_EXPORT_H */
diff --git a/include/uapi/linux/nfsd/nfsfh.h b/include/uapi/linux/nfsd/nfsfh.h
new file mode 100644
index 00000000000..616e3b39647
--- /dev/null
+++ b/include/uapi/linux/nfsd/nfsfh.h
@@ -0,0 +1,122 @@
+/*
+ * include/linux/nfsd/nfsfh.h
+ *
+ * This file describes the layout of the file handles as passed
+ * over the wire.
+ *
+ * Earlier versions of knfsd used to sign file handles using keyed MD5
+ * or SHA. I've removed this code, because it doesn't give you more
+ * security than blocking external access to port 2049 on your firewall.
+ *
+ * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef _UAPI_LINUX_NFSD_FH_H
+#define _UAPI_LINUX_NFSD_FH_H
+
+#include <linux/types.h>
+#include <linux/nfs.h>
+#include <linux/nfs2.h>
+#include <linux/nfs3.h>
+#include <linux/nfs4.h>
+
+/*
+ * This is the old "dentry style" Linux NFSv2 file handle.
+ *
+ * The xino and xdev fields are currently used to transport the
+ * ino/dev of the exported inode.
+ */
+struct nfs_fhbase_old {
+	__u32		fb_dcookie;	/* dentry cookie - always 0xfeebbaca */
+	__u32		fb_ino;		/* our inode number */
+	__u32		fb_dirino;	/* dir inode number, 0 for directories */
+	__u32		fb_dev;		/* our device */
+	__u32		fb_xdev;
+	__u32		fb_xino;
+	__u32		fb_generation;
+};
+
+/*
+ * This is the new flexible, extensible style NFSv2/v3 file handle.
+ * by Neil Brown <neilb@cse.unsw.edu.au> - March 2000
+ *
+ * The file handle starts with a sequence of four-byte words.
+ * The first word contains a version number (1) and three descriptor bytes
+ * that tell how the remaining 3 variable length fields should be handled.
+ * These three bytes are auth_type, fsid_type and fileid_type.
+ *
+ * All four-byte values are in host-byte-order.
+ *
+ * The auth_type field specifies how the filehandle can be authenticated
+ * This might allow a file to be confirmed to be in a writable part of a
+ * filetree without checking the path from it up to the root.
+ * Current values:
+ *     0  - No authentication.  fb_auth is 0 bytes long
+ * Possible future values:
+ *     1  - 4 bytes taken from MD5 hash of the remainer of the file handle
+ *          prefixed by a secret and with the important export flags.
+ *
+ * The fsid_type identifies how the filesystem (or export point) is
+ *    encoded.
+ *  Current values:
+ *     0  - 4 byte device id (ms-2-bytes major, ls-2-bytes minor), 4byte inode number
+ *        NOTE: we cannot use the kdev_t device id value, because kdev_t.h
+ *              says we mustn't.  We must break it up and reassemble.
+ *     1  - 4 byte user specified identifier
+ *     2  - 4 byte major, 4 byte minor, 4 byte inode number - DEPRECATED
+ *     3  - 4 byte device id, encoded for user-space, 4 byte inode number
+ *     4  - 4 byte inode number and 4 byte uuid
+ *     5  - 8 byte uuid
+ *     6  - 16 byte uuid
+ *     7  - 8 byte inode number and 16 byte uuid
+ *
+ * The fileid_type identified how the file within the filesystem is encoded.
+ * This is (will be) passed to, and set by, the underlying filesystem if it supports
+ * filehandle operations.  The filesystem must not use the value '0' or '0xff' and may
+ * only use the values 1 and 2 as defined below:
+ *  Current values:
+ *    0   - The root, or export point, of the filesystem.  fb_fileid is 0 bytes.
+ *    1   - 32bit inode number, 32 bit generation number.
+ *    2   - 32bit inode number, 32 bit generation number, 32 bit parent directory inode number.
+ *
+ */
+struct nfs_fhbase_new {
+	__u8		fb_version;	/* == 1, even => nfs_fhbase_old */
+	__u8		fb_auth_type;
+	__u8		fb_fsid_type;
+	__u8		fb_fileid_type;
+	__u32		fb_auth[1];
+/*	__u32		fb_fsid[0]; floating */
+/*	__u32		fb_fileid[0]; floating */
+};
+
+struct knfsd_fh {
+	unsigned int	fh_size;	/* significant for NFSv3.
+					 * Points to the current size while building
+					 * a new file handle
+					 */
+	union {
+		struct nfs_fhbase_old	fh_old;
+		__u32			fh_pad[NFS4_FHSIZE/4];
+		struct nfs_fhbase_new	fh_new;
+	} fh_base;
+};
+
+#define ofh_dcookie		fh_base.fh_old.fb_dcookie
+#define ofh_ino			fh_base.fh_old.fb_ino
+#define ofh_dirino		fh_base.fh_old.fb_dirino
+#define ofh_dev			fh_base.fh_old.fb_dev
+#define ofh_xdev		fh_base.fh_old.fb_xdev
+#define ofh_xino		fh_base.fh_old.fb_xino
+#define ofh_generation		fh_base.fh_old.fb_generation
+
+#define	fh_version		fh_base.fh_new.fb_version
+#define	fh_fsid_type		fh_base.fh_new.fb_fsid_type
+#define	fh_auth_type		fh_base.fh_new.fb_auth_type
+#define	fh_fileid_type		fh_base.fh_new.fb_fileid_type
+#define	fh_auth			fh_base.fh_new.fb_auth
+#define	fh_fsid			fh_base.fh_new.fb_auth
+
+
+
+#endif /* _UAPI_LINUX_NFSD_FH_H */
diff --git a/include/uapi/linux/nfsd/stats.h b/include/uapi/linux/nfsd/stats.h
new file mode 100644
index 00000000000..9fb7a064426
--- /dev/null
+++ b/include/uapi/linux/nfsd/stats.h
@@ -0,0 +1,17 @@
+/*
+ * linux/include/linux/nfsd/stats.h
+ *
+ * Statistics for NFS server.
+ *
+ * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef _UAPILINUX_NFSD_STATS_H
+#define _UAPILINUX_NFSD_STATS_H
+
+#include <linux/nfs4.h>
+
+/* thread usage wraps very million seconds (approx one fortnight) */
+#define	NFSD_USAGE_WRAP	(HZ*1000000)
+
+#endif /* _UAPILINUX_NFSD_STATS_H */
diff --git a/include/uapi/linux/sunrpc/Kbuild b/include/uapi/linux/sunrpc/Kbuild
index aafaa5aa54d..8e02e47c20f 100644
--- a/include/uapi/linux/sunrpc/Kbuild
+++ b/include/uapi/linux/sunrpc/Kbuild
@@ -1 +1,2 @@
 # UAPI Header export list
+header-y += debug.h
diff --git a/include/uapi/linux/sunrpc/debug.h b/include/uapi/linux/sunrpc/debug.h
new file mode 100644
index 00000000000..830e34493a8
--- /dev/null
+++ b/include/uapi/linux/sunrpc/debug.h
@@ -0,0 +1,48 @@
+/*
+ * linux/include/linux/sunrpc/debug.h
+ *
+ * Debugging support for sunrpc module
+ *
+ * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef _UAPI_LINUX_SUNRPC_DEBUG_H_
+#define _UAPI_LINUX_SUNRPC_DEBUG_H_
+
+/*
+ * RPC debug facilities
+ */
+#define RPCDBG_XPRT		0x0001
+#define RPCDBG_CALL		0x0002
+#define RPCDBG_DEBUG		0x0004
+#define RPCDBG_NFS		0x0008
+#define RPCDBG_AUTH		0x0010
+#define RPCDBG_BIND		0x0020
+#define RPCDBG_SCHED		0x0040
+#define RPCDBG_TRANS		0x0080
+#define RPCDBG_SVCXPRT		0x0100
+#define RPCDBG_SVCDSP		0x0200
+#define RPCDBG_MISC		0x0400
+#define RPCDBG_CACHE		0x0800
+#define RPCDBG_ALL		0x7fff
+
+
+/*
+ * Declarations for the sysctl debug interface, which allows to read or
+ * change the debug flags for rpc, nfs, nfsd, and lockd. Since the sunrpc
+ * module currently registers its sysctl table dynamically, the sysctl path
+ * for module FOO is <CTL_SUNRPC, CTL_FOODEBUG>.
+ */
+
+enum {
+	CTL_RPCDEBUG = 1,
+	CTL_NFSDEBUG,
+	CTL_NFSDDEBUG,
+	CTL_NLMDEBUG,
+	CTL_SLOTTABLE_UDP,
+	CTL_SLOTTABLE_TCP,
+	CTL_MIN_RESVPORT,
+	CTL_MAX_RESVPORT,
+};
+
+#endif /* _UAPI_LINUX_SUNRPC_DEBUG_H_ */