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, 73 insertions, 0 deletions

diff --git a/sys/fs/nfs/nfskpiport.h b/sys/fs/nfs/nfskpiport.h
new file mode 100644
index 0000000..1e1fb9c
--- /dev/null
+++ b/sys/fs/nfs/nfskpiport.h
@@ -0,0 +1,73 @@
+/*-
+ * Copyright (c) 2009 Rick Macklem, University of Guelph
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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_NFSKPIPORT_H_
+#define	_NFSKPIPORT_NFS_H_
+/*
+ * These definitions are needed since the generic code is now using Darwin8
+ * KPI stuff. (I know, seems a bit silly, but I want the code to build on
+ * Darwin8 and hopefully subsequent releases from Apple.)
+ */
+typedef	struct mount *		mount_t;
+#define	vfs_statfs(m)		(&((m)->mnt_stat))
+#define	vfs_flags(m)		((m)->mnt_flag)
+
+typedef struct vnode *		vnode_t;
+#define	vnode_mount(v)		((v)->v_mount)
+#define	vnode_vtype(v)		((v)->v_type)
+
+typedef struct mbuf *		mbuf_t;
+#define	mbuf_freem(m)		m_freem(m)
+#define	mbuf_data(m)		mtod((m), void *)
+#define	mbuf_len(m)		((m)->m_len)
+#define	mbuf_next(m)		((m)->m_next)
+#define	mbuf_setlen(m, l)	((m)->m_len = (l))
+#define	mbuf_setnext(m, p)	((m)->m_next = (p))
+#define	mbuf_pkthdr_len(m)	((m)->m_pkthdr.len)
+#define	mbuf_pkthdr_setlen(m, l) ((m)->m_pkthdr.len = (l))
+#define	mbuf_pkthdr_setrcvif(m, p) ((m)->m_pkthdr.rcvif = (p))
+
+/*
+ * This stuff is needed by Darwin for handling the uio structure.
+ */
+#define	CAST_USER_ADDR_T(a)	(a)
+#define	CAST_DOWN(c, a)		((c) (a))
+#define	uio_uio_resid(p)	((p)->uio_resid)
+#define	uio_uio_resid_add(p, v)	((p)->uio_resid += (v))
+#define	uio_uio_resid_set(p, v)	((p)->uio_resid = (v))
+#define	uio_iov_base(p)		((p)->uio_iov->iov_base)
+#define	uio_iov_base_add(p, v)	do {					\
+	char *pp;							\
+	pp = (char *)(p)->uio_iov->iov_base;				\
+	pp += (v);							\
+	(p)->uio_iov->iov_base = (void *)pp;				\
+    } while (0)
+#define	uio_iov_len(p)		((p)->uio_iov->iov_len)
+#define	uio_iov_len_add(p, v)	((p)->uio_iov->iov_len += (v))
+
+#endif	/* _NFSKPIPORT_NFS_H */