Add the experimental nfs subtree to the kernel, that includes

	support for NFSv4 as well as NFSv2 and 3.
	It lives in 3 subdirs under sys/fs:
	nfs - functions that are common to the client and server
	nfsclient - a mutation of sys/nfsclient that call generic functions
	to do RPCs and handle state. As such, it retains the
	buffer cache handling characteristics and vnode semantics that
	are found in sys/nfsclient, for the most part.
	nfsserver - the server. It includes a DRC designed specifically for
	NFSv4, that is used instead of the generic DRC in sys/rpc.
	The build glue will be checked in later, so at this point, it
	consists of 3 new subdirs that should not affect kernel building.

Approved by:	kib (mentor)

1 files changed, 207 insertions, 0 deletions

diff --git a/sys/fs/nfs/rpcv2.h b/sys/fs/nfs/rpcv2.h
new file mode 100644
index 0000000..d2174ac
--- /dev/null
+++ b/sys/fs/nfs/rpcv2.h
@@ -0,0 +1,207 @@
+/*-
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Rick Macklem at The University of Guelph.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _NFS_RPCV2_H_
+#define	_NFS_RPCV2_H_
+
+/*
+ * Definitions for Sun RPC Version 2, from
+ * "RPC: Remote Procedure Call Protocol Specification" RFC1057
+ */
+
+/* Version # */
+#define	RPC_VER2		2
+
+/* Authentication flavours */
+#define	RPCAUTH_NULL			0
+#define	RPCAUTH_UNIX			1
+#define	RPCAUTH_SHORT			2
+#define	RPCAUTH_KERB4			4
+#define	RPCAUTH_GSS			6
+#define	RPCAUTH_GSSKRB5			390003
+#define	RPCAUTH_GSSKRB5INTEGRITY	390004
+#define	RPCAUTH_GSSKRB5PRIVACY		390005
+
+#define	RPCAUTH_MAXSIZ		400
+#define	RPCVERF_MAXSIZ	12	/* For Kerb, can actually be 400 */
+
+/*
+ * RPCAUTH_UNIX defs.
+ */
+#define	RPCAUTHUNIX_MINSIZ	(5 * NFSX_UNSIGNED)
+#define	RPCAUTH_UNIXGIDS 16
+
+/*
+ * RPCAUTH_GSS defs.
+ */
+#define	RPCAUTHGSS_VERS1	1
+
+#define	RPCAUTHGSS_DATA		0
+#define	RPCAUTHGSS_INIT		1
+#define	RPCAUTHGSS_CONTINIT	2
+#define	RPCAUTHGSS_DESTROY	3
+
+#define	RPCAUTHGSS_SVCNONE	1
+#define	RPCAUTHGSS_SVCINTEGRITY	2
+#define	RPCAUTHGSS_SVCPRIVACY	3
+
+#define	RPCAUTHGSS_MAXSEQ	0x80000000
+
+#define	RPCAUTHGSS_WINDOW	64	/* # of bits in u_int64_t */
+#define	RPCAUTHGSS_SEQWINDOW	(RPCAUTHGSS_WINDOW + 1)
+
+#define	RPCAUTHGSS_MIC		1
+#define	RPCAUTHGSS_WRAP		2
+
+/*
+ * Qop values for the types of security services.
+ */
+#define	GSS_KERBV_QOP		0
+
+/*
+ * Sizes of GSS stuff.
+ */
+#define	RPCGSS_KEYSIZ		8
+
+#define	GSSX_AUTHHEAD	(5 * NFSX_UNSIGNED)
+#define	GSSX_MYHANDLE	(sizeof (long) + sizeof (u_int64_t))
+#define	GSSX_RPCHEADER	(13 * NFSX_UNSIGNED + GSSX_MYHANDLE)
+#define	GSSX_MINWRAP	(2 * NFSX_UNSIGNED)
+#define	GSSX_KERBVTOKEN	24
+#define	GSSX_LOCALHANDLE (sizeof (void *))
+
+/*
+ * Stuff for the gssd.
+ */
+#define	RPCPROG_GSSD		0x20101010
+#define	RPCGSSD_VERS		1
+#define	RPCGSSD_INIT		1
+#define	RPCGSSD_CONTINIT	2
+#define	RPCGSSD_CONTINITDESTROY	3
+#define	RPCGSSD_CLINIT		4
+#define	RPCGSSD_CLINITUID	5
+#define	RPCGSSD_CLCONT		6
+#define	RPCGSSD_CLCONTUID	7
+#define	RPCGSSD_CLINITNAME	8
+#define	RPCGSSD_CLCONTNAME	9
+
+/*
+ * Stuff for the nfsuserd
+ */
+#define	RPCPROG_NFSUSERD	0x21010101
+#define	RPCNFSUSERD_VERS	1
+#define	RPCNFSUSERD_GETUID	1
+#define	RPCNFSUSERD_GETGID	2
+#define	RPCNFSUSERD_GETUSER	3
+#define	RPCNFSUSERD_GETGROUP	4
+
+/*
+ * Some major status codes.
+ */
+#if !defined(_GSSAPI_H_) && !defined(GSSAPI_H_) && !defined(_GSSAPI_GSSAPI_H_) && !defined(_RPCSEC_GSS_H)
+#define	 GSS_S_COMPLETE                  0x00000000
+#define	 GSS_S_CONTINUE_NEEDED           0x00000001
+#define	 GSS_S_DUPLICATE_TOKEN           0x00000002
+#define	 GSS_S_OLD_TOKEN                 0x00000004
+#define	 GSS_S_UNSEQ_TOKEN               0x00000008
+#define	 GSS_S_GAP_TOKEN                 0x00000010
+#define	 GSS_S_BAD_MECH                  0x00010000
+#define	 GSS_S_BAD_NAME                  0x00020000
+#define	 GSS_S_BAD_NAMETYPE              0x00030000
+#define	 GSS_S_BAD_BINDINGS              0x00040000
+#define	 GSS_S_BAD_STATUS                0x00050000
+#define	 GSS_S_BAD_MIC                   0x00060000
+#define	 GSS_S_BAD_SIG                   0x00060000
+#define	 GSS_S_NO_CRED                   0x00070000
+#define	 GSS_S_NO_CONTEXT                0x00080000
+#define	 GSS_S_DEFECTIVE_TOKEN           0x00090000
+#define	 GSS_S_DEFECTIVE_CREDENTIAL      0x000a0000
+#define	 GSS_S_CREDENTIALS_EXPIRED       0x000b0000
+#define	 GSS_S_CONTEXT_EXPIRED           0x000c0000
+#define	 GSS_S_FAILURE                   0x000d0000
+#define	 GSS_S_BAD_QOP                   0x000e0000
+#define	 GSS_S_UNAUTHORIZED              0x000f0000
+#define	 GSS_S_UNAVAILABLE               0x00100000
+#define	 GSS_S_DUPLICATE_ELEMENT         0x00110000
+#define	 GSS_S_NAME_NOT_MN               0x00120000
+#define	 GSS_S_CALL_INACCESSIBLE_READ    0x01000000
+#define	 GSS_S_CALL_INACCESSIBLE_WRITE   0x02000000
+#define	 GSS_S_CALL_BAD_STRUCTURE        0x03000000
+#endif	/* _GSSAPI_H_ */
+
+/* Rpc Constants */
+#define	RPC_CALL	0
+#define	RPC_REPLY	1
+#define	RPC_MSGACCEPTED	0
+#define	RPC_MSGDENIED	1
+#define	RPC_PROGUNAVAIL	1
+#define	RPC_PROGMISMATCH	2
+#define	RPC_PROCUNAVAIL	3
+#define	RPC_GARBAGE	4		/* I like this one */
+#define	RPC_MISMATCH	0
+#define	RPC_AUTHERR	1
+
+/* Authentication failures */
+#define	AUTH_BADCRED	1
+#define	AUTH_REJECTCRED	2
+#define	AUTH_BADVERF	3
+#define	AUTH_REJECTVERF	4
+#define	AUTH_TOOWEAK	5		/* Give em wheaties */
+#define	AUTH_PROBCRED	13
+#define	AUTH_CTXCRED	14
+
+/* Sizes of rpc header parts */
+#define	RPC_SIZ		24
+#define	RPC_REPLYSIZ	28
+
+/* RPC Prog definitions */
+#define	RPCPROG_MNT	100005
+#define	RPCMNT_VER1	1
+#define	RPCMNT_VER3	3
+#define	RPCMNT_MOUNT	1
+#define	RPCMNT_DUMP	2
+#define	RPCMNT_UMOUNT	3
+#define	RPCMNT_UMNTALL	4
+#define	RPCMNT_EXPORT	5
+#define	RPCMNT_NAMELEN	255
+#define	RPCMNT_PATHLEN	1024
+#define	RPCPROG_NFS	100003
+ 
+/* Structs for common parts of the rpc's */
+struct rpcv2_time {
+	u_int32_t rpc_sec;
+	u_int32_t rpc_usec;
+};
+
+#endif	/* _NFS_RPCV2_H_ */