Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 711 insertions, 0 deletions

diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
new file mode 100644
index 0000000..d91b690
--- /dev/null
+++ b/fs/nfs/nfs2xdr.c
@@ -0,0 +1,711 @@
+/*
+ * linux/fs/nfs/nfs2xdr.c
+ *
+ * XDR functions to encode/decode NFS RPC arguments and results.
+ *
+ * Copyright (C) 1992, 1993, 1994  Rick Sladkey
+ * Copyright (C) 1996 Olaf Kirch
+ * 04 Aug 1998  Ion Badulescu <ionut@cs.columbia.edu>
+ * 		FIFO's need special handling in NFSv2
+ */
+
+#include <linux/param.h>
+#include <linux/time.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/utsname.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/in.h>
+#include <linux/pagemap.h>
+#include <linux/proc_fs.h>
+#include <linux/sunrpc/clnt.h>
+#include <linux/nfs.h>
+#include <linux/nfs2.h>
+#include <linux/nfs_fs.h>
+
+#define NFSDBG_FACILITY		NFSDBG_XDR
+/* #define NFS_PARANOIA 1 */
+
+extern int			nfs_stat_to_errno(int stat);
+
+/* Mapping from NFS error code to "errno" error code. */
+#define errno_NFSERR_IO		EIO
+
+/*
+ * Declare the space requirements for NFS arguments and replies as
+ * number of 32bit-words
+ */
+#define NFS_fhandle_sz		(8)
+#define NFS_sattr_sz		(8)
+#define NFS_filename_sz		(1+(NFS2_MAXNAMLEN>>2))
+#define NFS_path_sz		(1+(NFS2_MAXPATHLEN>>2))
+#define NFS_fattr_sz		(17)
+#define NFS_info_sz		(5)
+#define NFS_entry_sz		(NFS_filename_sz+3)
+
+#define NFS_diropargs_sz	(NFS_fhandle_sz+NFS_filename_sz)
+#define NFS_sattrargs_sz	(NFS_fhandle_sz+NFS_sattr_sz)
+#define NFS_readlinkargs_sz	(NFS_fhandle_sz)
+#define NFS_readargs_sz		(NFS_fhandle_sz+3)
+#define NFS_writeargs_sz	(NFS_fhandle_sz+4)
+#define NFS_createargs_sz	(NFS_diropargs_sz+NFS_sattr_sz)
+#define NFS_renameargs_sz	(NFS_diropargs_sz+NFS_diropargs_sz)
+#define NFS_linkargs_sz		(NFS_fhandle_sz+NFS_diropargs_sz)
+#define NFS_symlinkargs_sz	(NFS_diropargs_sz+NFS_path_sz+NFS_sattr_sz)
+#define NFS_readdirargs_sz	(NFS_fhandle_sz+2)
+
+#define NFS_attrstat_sz		(1+NFS_fattr_sz)
+#define NFS_diropres_sz		(1+NFS_fhandle_sz+NFS_fattr_sz)
+#define NFS_readlinkres_sz	(2)
+#define NFS_readres_sz		(1+NFS_fattr_sz+1)
+#define NFS_writeres_sz         (NFS_attrstat_sz)
+#define NFS_stat_sz		(1)
+#define NFS_readdirres_sz	(1)
+#define NFS_statfsres_sz	(1+NFS_info_sz)
+
+/*
+ * Common NFS XDR functions as inlines
+ */
+static inline u32 *
+xdr_encode_fhandle(u32 *p, struct nfs_fh *fhandle)
+{
+	memcpy(p, fhandle->data, NFS2_FHSIZE);
+	return p + XDR_QUADLEN(NFS2_FHSIZE);
+}
+
+static inline u32 *
+xdr_decode_fhandle(u32 *p, struct nfs_fh *fhandle)
+{
+	/* NFSv2 handles have a fixed length */
+	fhandle->size = NFS2_FHSIZE;
+	memcpy(fhandle->data, p, NFS2_FHSIZE);
+	return p + XDR_QUADLEN(NFS2_FHSIZE);
+}
+
+static inline u32*
+xdr_encode_time(u32 *p, struct timespec *timep)
+{
+	*p++ = htonl(timep->tv_sec);
+	/* Convert nanoseconds into microseconds */
+	*p++ = htonl(timep->tv_nsec ? timep->tv_nsec / 1000 : 0);
+	return p;
+}
+
+static inline u32*
+xdr_encode_current_server_time(u32 *p, struct timespec *timep)
+{
+	/*
+	 * Passing the invalid value useconds=1000000 is a
+	 * Sun convention for "set to current server time".
+	 * It's needed to make permissions checks for the
+	 * "touch" program across v2 mounts to Solaris and
+	 * Irix boxes work correctly. See description of
+	 * sattr in section 6.1 of "NFS Illustrated" by
+	 * Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5
+	 */
+	*p++ = htonl(timep->tv_sec);
+	*p++ = htonl(1000000);
+	return p;
+}
+
+static inline u32*
+xdr_decode_time(u32 *p, struct timespec *timep)
+{
+	timep->tv_sec = ntohl(*p++);
+	/* Convert microseconds into nanoseconds */
+	timep->tv_nsec = ntohl(*p++) * 1000;
+	return p;
+}
+
+static u32 *
+xdr_decode_fattr(u32 *p, struct nfs_fattr *fattr)
+{
+	u32 rdev;
+	fattr->type = (enum nfs_ftype) ntohl(*p++);
+	fattr->mode = ntohl(*p++);
+	fattr->nlink = ntohl(*p++);
+	fattr->uid = ntohl(*p++);
+	fattr->gid = ntohl(*p++);
+	fattr->size = ntohl(*p++);
+	fattr->du.nfs2.blocksize = ntohl(*p++);
+	rdev = ntohl(*p++);
+	fattr->du.nfs2.blocks = ntohl(*p++);
+	fattr->fsid_u.nfs3 = ntohl(*p++);
+	fattr->fileid = ntohl(*p++);
+	p = xdr_decode_time(p, &fattr->atime);
+	p = xdr_decode_time(p, &fattr->mtime);
+	p = xdr_decode_time(p, &fattr->ctime);
+	fattr->valid |= NFS_ATTR_FATTR;
+	fattr->rdev = new_decode_dev(rdev);
+	if (fattr->type == NFCHR && rdev == NFS2_FIFO_DEV) {
+		fattr->type = NFFIFO;
+		fattr->mode = (fattr->mode & ~S_IFMT) | S_IFIFO;
+		fattr->rdev = 0;
+	}
+	fattr->timestamp = jiffies;
+	return p;
+}
+
+#define SATTR(p, attr, flag, field) \
+        *p++ = (attr->ia_valid & flag) ? htonl(attr->field) : ~(u32) 0
+static inline u32 *
+xdr_encode_sattr(u32 *p, struct iattr *attr)
+{
+	SATTR(p, attr, ATTR_MODE, ia_mode);
+	SATTR(p, attr, ATTR_UID, ia_uid);
+	SATTR(p, attr, ATTR_GID, ia_gid);
+	SATTR(p, attr, ATTR_SIZE, ia_size);
+
+	if (attr->ia_valid & ATTR_ATIME_SET) {
+		p = xdr_encode_time(p, &attr->ia_atime);
+	} else if (attr->ia_valid & ATTR_ATIME) {
+		p = xdr_encode_current_server_time(p, &attr->ia_atime);
+	} else {
+		*p++ = ~(u32) 0;
+		*p++ = ~(u32) 0;
+	}
+
+	if (attr->ia_valid & ATTR_MTIME_SET) {
+		p = xdr_encode_time(p, &attr->ia_mtime);
+	} else if (attr->ia_valid & ATTR_MTIME) {
+		p = xdr_encode_current_server_time(p, &attr->ia_mtime);
+	} else {
+		*p++ = ~(u32) 0;	
+		*p++ = ~(u32) 0;
+	}
+  	return p;
+}
+#undef SATTR
+
+/*
+ * NFS encode functions
+ */
+/*
+ * Encode file handle argument
+ * GETATTR, READLINK, STATFS
+ */
+static int
+nfs_xdr_fhandle(struct rpc_rqst *req, u32 *p, struct nfs_fh *fh)
+{
+	p = xdr_encode_fhandle(p, fh);
+	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+	return 0;
+}
+
+/*
+ * Encode SETATTR arguments
+ */
+static int
+nfs_xdr_sattrargs(struct rpc_rqst *req, u32 *p, struct nfs_sattrargs *args)
+{
+	p = xdr_encode_fhandle(p, args->fh);
+	p = xdr_encode_sattr(p, args->sattr);
+	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+	return 0;
+}
+
+/*
+ * Encode directory ops argument
+ * LOOKUP, REMOVE, RMDIR
+ */
+static int
+nfs_xdr_diropargs(struct rpc_rqst *req, u32 *p, struct nfs_diropargs *args)
+{
+	p = xdr_encode_fhandle(p, args->fh);
+	p = xdr_encode_array(p, args->name, args->len);
+	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+	return 0;
+}
+
+/*
+ * Arguments to a READ call. Since we read data directly into the page
+ * cache, we also set up the reply iovec here so that iov[1] points
+ * exactly to the page we want to fetch.
+ */
+static int
+nfs_xdr_readargs(struct rpc_rqst *req, u32 *p, struct nfs_readargs *args)
+{
+	struct rpc_auth	*auth = req->rq_task->tk_auth;
+	unsigned int replen;
+	u32 offset = (u32)args->offset;
+	u32 count = args->count;
+
+	p = xdr_encode_fhandle(p, args->fh);
+	*p++ = htonl(offset);
+	*p++ = htonl(count);
+	*p++ = htonl(count);
+	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+
+	/* Inline the page array */
+	replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readres_sz) << 2;
+	xdr_inline_pages(&req->rq_rcv_buf, replen,
+			 args->pages, args->pgbase, count);
+	return 0;
+}
+
+/*
+ * Decode READ reply
+ */
+static int
+nfs_xdr_readres(struct rpc_rqst *req, u32 *p, struct nfs_readres *res)
+{
+	struct kvec *iov = req->rq_rcv_buf.head;
+	int	status, count, recvd, hdrlen;
+
+	if ((status = ntohl(*p++)))
+		return -nfs_stat_to_errno(status);
+	p = xdr_decode_fattr(p, res->fattr);
+
+	count = ntohl(*p++);
+	res->eof = 0;
+	hdrlen = (u8 *) p - (u8 *) iov->iov_base;
+	if (iov->iov_len < hdrlen) {
+		printk(KERN_WARNING "NFS: READ reply header overflowed:"
+				"length %d > %Zu\n", hdrlen, iov->iov_len);
+		return -errno_NFSERR_IO;
+	} else if (iov->iov_len != hdrlen) {
+		dprintk("NFS: READ header is short. iovec will be shifted.\n");
+		xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen);
+	}
+
+	recvd = req->rq_rcv_buf.len - hdrlen;
+	if (count > recvd) {
+		printk(KERN_WARNING "NFS: server cheating in read reply: "
+			"count %d > recvd %d\n", count, recvd);
+		count = recvd;
+	}
+
+	dprintk("RPC:      readres OK count %d\n", count);
+	if (count < res->count)
+		res->count = count;
+
+	return count;
+}
+
+
+/*
+ * Write arguments. Splice the buffer to be written into the iovec.
+ */
+static int
+nfs_xdr_writeargs(struct rpc_rqst *req, u32 *p, struct nfs_writeargs *args)
+{
+	struct xdr_buf *sndbuf = &req->rq_snd_buf;
+	u32 offset = (u32)args->offset;
+	u32 count = args->count;
+
+	p = xdr_encode_fhandle(p, args->fh);
+	*p++ = htonl(offset);
+	*p++ = htonl(offset);
+	*p++ = htonl(count);
+	*p++ = htonl(count);
+	sndbuf->len = xdr_adjust_iovec(sndbuf->head, p);
+
+	/* Copy the page array */
+	xdr_encode_pages(sndbuf, args->pages, args->pgbase, count);
+	return 0;
+}
+
+/*
+ * Encode create arguments
+ * CREATE, MKDIR
+ */
+static int
+nfs_xdr_createargs(struct rpc_rqst *req, u32 *p, struct nfs_createargs *args)
+{
+	p = xdr_encode_fhandle(p, args->fh);
+	p = xdr_encode_array(p, args->name, args->len);
+	p = xdr_encode_sattr(p, args->sattr);
+	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+	return 0;
+}
+
+/*
+ * Encode RENAME arguments
+ */
+static int
+nfs_xdr_renameargs(struct rpc_rqst *req, u32 *p, struct nfs_renameargs *args)
+{
+	p = xdr_encode_fhandle(p, args->fromfh);
+	p = xdr_encode_array(p, args->fromname, args->fromlen);
+	p = xdr_encode_fhandle(p, args->tofh);
+	p = xdr_encode_array(p, args->toname, args->tolen);
+	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+	return 0;
+}
+
+/*
+ * Encode LINK arguments
+ */
+static int
+nfs_xdr_linkargs(struct rpc_rqst *req, u32 *p, struct nfs_linkargs *args)
+{
+	p = xdr_encode_fhandle(p, args->fromfh);
+	p = xdr_encode_fhandle(p, args->tofh);
+	p = xdr_encode_array(p, args->toname, args->tolen);
+	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+	return 0;
+}
+
+/*
+ * Encode SYMLINK arguments
+ */
+static int
+nfs_xdr_symlinkargs(struct rpc_rqst *req, u32 *p, struct nfs_symlinkargs *args)
+{
+	p = xdr_encode_fhandle(p, args->fromfh);
+	p = xdr_encode_array(p, args->fromname, args->fromlen);
+	p = xdr_encode_array(p, args->topath, args->tolen);
+	p = xdr_encode_sattr(p, args->sattr);
+	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+	return 0;
+}
+
+/*
+ * Encode arguments to readdir call
+ */
+static int
+nfs_xdr_readdirargs(struct rpc_rqst *req, u32 *p, struct nfs_readdirargs *args)
+{
+	struct rpc_task	*task = req->rq_task;
+	struct rpc_auth	*auth = task->tk_auth;
+	unsigned int replen;
+	u32 count = args->count;
+
+	p = xdr_encode_fhandle(p, args->fh);
+	*p++ = htonl(args->cookie);
+	*p++ = htonl(count); /* see above */
+	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+
+	/* Inline the page array */
+	replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readdirres_sz) << 2;
+	xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count);
+	return 0;
+}
+
+/*
+ * Decode the result of a readdir call.
+ * We're not really decoding anymore, we just leave the buffer untouched
+ * and only check that it is syntactically correct.
+ * The real decoding happens in nfs_decode_entry below, called directly
+ * from nfs_readdir for each entry.
+ */
+static int
+nfs_xdr_readdirres(struct rpc_rqst *req, u32 *p, void *dummy)
+{
+	struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
+	struct kvec *iov = rcvbuf->head;
+	struct page **page;
+	int hdrlen, recvd;
+	int status, nr;
+	unsigned int len, pglen;
+	u32 *end, *entry, *kaddr;
+
+	if ((status = ntohl(*p++)))
+		return -nfs_stat_to_errno(status);
+
+	hdrlen = (u8 *) p - (u8 *) iov->iov_base;
+	if (iov->iov_len < hdrlen) {
+		printk(KERN_WARNING "NFS: READDIR reply header overflowed:"
+				"length %d > %Zu\n", hdrlen, iov->iov_len);
+		return -errno_NFSERR_IO;
+	} else if (iov->iov_len != hdrlen) {
+		dprintk("NFS: READDIR header is short. iovec will be shifted.\n");
+		xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
+	}
+
+	pglen = rcvbuf->page_len;
+	recvd = rcvbuf->len - hdrlen;
+	if (pglen > recvd)
+		pglen = recvd;
+	page = rcvbuf->pages;
+	kaddr = p = (u32 *)kmap_atomic(*page, KM_USER0);
+	end = (u32 *)((char *)p + pglen);
+	entry = p;
+	for (nr = 0; *p++; nr++) {
+		if (p + 2 > end)
+			goto short_pkt;
+		p++; /* fileid */
+		len = ntohl(*p++);
+		p += XDR_QUADLEN(len) + 1;	/* name plus cookie */
+		if (len > NFS2_MAXNAMLEN) {
+			printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)!\n",
+						len);
+			goto err_unmap;
+		}
+		if (p + 2 > end)
+			goto short_pkt;
+		entry = p;
+	}
+	if (!nr && (entry[0] != 0 || entry[1] == 0))
+		goto short_pkt;
+ out:
+	kunmap_atomic(kaddr, KM_USER0);
+	return nr;
+ short_pkt:
+	entry[0] = entry[1] = 0;
+	/* truncate listing ? */
+	if (!nr) {
+		printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
+		entry[1] = 1;
+	}
+	goto out;
+err_unmap:
+	nr = -errno_NFSERR_IO;
+	goto out;
+}
+
+u32 *
+nfs_decode_dirent(u32 *p, struct nfs_entry *entry, int plus)
+{
+	if (!*p++) {
+		if (!*p)
+			return ERR_PTR(-EAGAIN);
+		entry->eof = 1;
+		return ERR_PTR(-EBADCOOKIE);
+	}
+
+	entry->ino	  = ntohl(*p++);
+	entry->len	  = ntohl(*p++);
+	entry->name	  = (const char *) p;
+	p		 += XDR_QUADLEN(entry->len);
+	entry->prev_cookie	  = entry->cookie;
+	entry->cookie	  = ntohl(*p++);
+	entry->eof	  = !p[0] && p[1];
+
+	return p;
+}
+
+/*
+ * NFS XDR decode functions
+ */
+/*
+ * Decode simple status reply
+ */
+static int
+nfs_xdr_stat(struct rpc_rqst *req, u32 *p, void *dummy)
+{
+	int	status;
+
+	if ((status = ntohl(*p++)) != 0)
+		status = -nfs_stat_to_errno(status);
+	return status;
+}
+
+/*
+ * Decode attrstat reply
+ * GETATTR, SETATTR, WRITE
+ */
+static int
+nfs_xdr_attrstat(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr)
+{
+	int	status;
+
+	if ((status = ntohl(*p++)))
+		return -nfs_stat_to_errno(status);
+	xdr_decode_fattr(p, fattr);
+	return 0;
+}
+
+/*
+ * Decode diropres reply
+ * LOOKUP, CREATE, MKDIR
+ */
+static int
+nfs_xdr_diropres(struct rpc_rqst *req, u32 *p, struct nfs_diropok *res)
+{
+	int	status;
+
+	if ((status = ntohl(*p++)))
+		return -nfs_stat_to_errno(status);
+	p = xdr_decode_fhandle(p, res->fh);
+	xdr_decode_fattr(p, res->fattr);
+	return 0;
+}
+
+/*
+ * Encode READLINK args
+ */
+static int
+nfs_xdr_readlinkargs(struct rpc_rqst *req, u32 *p, struct nfs_readlinkargs *args)
+{
+	struct rpc_auth *auth = req->rq_task->tk_auth;
+	unsigned int replen;
+
+	p = xdr_encode_fhandle(p, args->fh);
+	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+
+	/* Inline the page array */
+	replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readlinkres_sz) << 2;
+	xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen);
+	return 0;
+}
+
+/*
+ * Decode READLINK reply
+ */
+static int
+nfs_xdr_readlinkres(struct rpc_rqst *req, u32 *p, void *dummy)
+{
+	struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
+	struct kvec *iov = rcvbuf->head;
+	int hdrlen, len, recvd;
+	char	*kaddr;
+	int	status;
+
+	if ((status = ntohl(*p++)))
+		return -nfs_stat_to_errno(status);
+	/* Convert length of symlink */
+	len = ntohl(*p++);
+	if (len >= rcvbuf->page_len || len <= 0) {
+		dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
+		return -ENAMETOOLONG;
+	}
+	hdrlen = (u8 *) p - (u8 *) iov->iov_base;
+	if (iov->iov_len < hdrlen) {
+		printk(KERN_WARNING "NFS: READLINK reply header overflowed:"
+				"length %d > %Zu\n", hdrlen, iov->iov_len);
+		return -errno_NFSERR_IO;
+	} else if (iov->iov_len != hdrlen) {
+		dprintk("NFS: READLINK header is short. iovec will be shifted.\n");
+		xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
+	}
+	recvd = req->rq_rcv_buf.len - hdrlen;
+	if (recvd < len) {
+		printk(KERN_WARNING "NFS: server cheating in readlink reply: "
+				"count %u > recvd %u\n", len, recvd);
+		return -EIO;
+	}
+
+	/* NULL terminate the string we got */
+	kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
+	kaddr[len+rcvbuf->page_base] = '\0';
+	kunmap_atomic(kaddr, KM_USER0);
+	return 0;
+}
+
+/*
+ * Decode WRITE reply
+ */
+static int
+nfs_xdr_writeres(struct rpc_rqst *req, u32 *p, struct nfs_writeres *res)
+{
+	res->verf->committed = NFS_FILE_SYNC;
+	return nfs_xdr_attrstat(req, p, res->fattr);
+}
+
+/*
+ * Decode STATFS reply
+ */
+static int
+nfs_xdr_statfsres(struct rpc_rqst *req, u32 *p, struct nfs2_fsstat *res)
+{
+	int	status;
+
+	if ((status = ntohl(*p++)))
+		return -nfs_stat_to_errno(status);
+
+	res->tsize  = ntohl(*p++);
+	res->bsize  = ntohl(*p++);
+	res->blocks = ntohl(*p++);
+	res->bfree  = ntohl(*p++);
+	res->bavail = ntohl(*p++);
+	return 0;
+}
+
+/*
+ * We need to translate between nfs status return values and
+ * the local errno values which may not be the same.
+ */
+static struct {
+	int stat;
+	int errno;
+} nfs_errtbl[] = {
+	{ NFS_OK,		0		},
+	{ NFSERR_PERM,		EPERM		},
+	{ NFSERR_NOENT,		ENOENT		},
+	{ NFSERR_IO,		errno_NFSERR_IO	},
+	{ NFSERR_NXIO,		ENXIO		},
+/*	{ NFSERR_EAGAIN,	EAGAIN		}, */
+	{ NFSERR_ACCES,		EACCES		},
+	{ NFSERR_EXIST,		EEXIST		},
+	{ NFSERR_XDEV,		EXDEV		},
+	{ NFSERR_NODEV,		ENODEV		},
+	{ NFSERR_NOTDIR,	ENOTDIR		},
+	{ NFSERR_ISDIR,		EISDIR		},
+	{ NFSERR_INVAL,		EINVAL		},
+	{ NFSERR_FBIG,		EFBIG		},
+	{ NFSERR_NOSPC,		ENOSPC		},
+	{ NFSERR_ROFS,		EROFS		},
+	{ NFSERR_MLINK,		EMLINK		},
+	{ NFSERR_NAMETOOLONG,	ENAMETOOLONG	},
+	{ NFSERR_NOTEMPTY,	ENOTEMPTY	},
+	{ NFSERR_DQUOT,		EDQUOT		},
+	{ NFSERR_STALE,		ESTALE		},
+	{ NFSERR_REMOTE,	EREMOTE		},
+#ifdef EWFLUSH
+	{ NFSERR_WFLUSH,	EWFLUSH		},
+#endif
+	{ NFSERR_BADHANDLE,	EBADHANDLE	},
+	{ NFSERR_NOT_SYNC,	ENOTSYNC	},
+	{ NFSERR_BAD_COOKIE,	EBADCOOKIE	},
+	{ NFSERR_NOTSUPP,	ENOTSUPP	},
+	{ NFSERR_TOOSMALL,	ETOOSMALL	},
+	{ NFSERR_SERVERFAULT,	ESERVERFAULT	},
+	{ NFSERR_BADTYPE,	EBADTYPE	},
+	{ NFSERR_JUKEBOX,	EJUKEBOX	},
+	{ -1,			EIO		}
+};
+
+/*
+ * Convert an NFS error code to a local one.
+ * This one is used jointly by NFSv2 and NFSv3.
+ */
+int
+nfs_stat_to_errno(int stat)
+{
+	int i;
+
+	for (i = 0; nfs_errtbl[i].stat != -1; i++) {
+		if (nfs_errtbl[i].stat == stat)
+			return nfs_errtbl[i].errno;
+	}
+	printk(KERN_ERR "nfs_stat_to_errno: bad nfs status return value: %d\n", stat);
+	return nfs_errtbl[i].errno;
+}
+
+#ifndef MAX
+# define MAX(a, b)	(((a) > (b))? (a) : (b))
+#endif
+
+#define PROC(proc, argtype, restype, timer)				\
+[NFSPROC_##proc] = {							\
+	.p_proc	    =  NFSPROC_##proc,					\
+	.p_encode   =  (kxdrproc_t) nfs_xdr_##argtype,			\
+	.p_decode   =  (kxdrproc_t) nfs_xdr_##restype,			\
+	.p_bufsiz   =  MAX(NFS_##argtype##_sz,NFS_##restype##_sz) << 2,	\
+	.p_timer    =  timer						\
+	}
+struct rpc_procinfo	nfs_procedures[] = {
+    PROC(GETATTR,	fhandle,	attrstat, 1),
+    PROC(SETATTR,	sattrargs,	attrstat, 0),
+    PROC(LOOKUP,	diropargs,	diropres, 2),
+    PROC(READLINK,	readlinkargs,	readlinkres, 3),
+    PROC(READ,		readargs,	readres, 3),
+    PROC(WRITE,		writeargs,	writeres, 4),
+    PROC(CREATE,	createargs,	diropres, 0),
+    PROC(REMOVE,	diropargs,	stat, 0),
+    PROC(RENAME,	renameargs,	stat, 0),
+    PROC(LINK,		linkargs,	stat, 0),
+    PROC(SYMLINK,	symlinkargs,	stat, 0),
+    PROC(MKDIR,		createargs,	diropres, 0),
+    PROC(RMDIR,		diropargs,	stat, 0),
+    PROC(READDIR,	readdirargs,	readdirres, 3),
+    PROC(STATFS,	fhandle,	statfsres, 0),
+};
+
+struct rpc_version		nfs_version2 = {
+	.number			= 2,
+	.nrprocs		= sizeof(nfs_procedures)/sizeof(nfs_procedures[0]),
+	.procs			= nfs_procedures
+};