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[src/netbsd-1-5]: src/sys/nfs Pullup 1.87 [fvdl]:
details: https://anonhg.NetBSD.org/src/rev/be915bb31618
branches: netbsd-1-5
changeset: 490001:be915bb31618
user: tv <tv%NetBSD.org@localhost>
date: Mon Oct 30 22:22:58 2000 +0000
description:
Pullup 1.87 [fvdl]:
Do not accept vnode type changes to an active node. This may wreak
havoc if the server erroneously uses the same filehandle for
different files. This changes back revision 1.28; the PR that
that revision fixed doesn't apply anymore, it has been verified
not to be a problem with this change.
diffstat:
sys/nfs/nfs_subs.c | 2445 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 2445 insertions(+), 0 deletions(-)
diffs (truncated from 2449 to 300 lines):
diff -r fcf7369b49c9 -r be915bb31618 sys/nfs/nfs_subs.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/nfs/nfs_subs.c Mon Oct 30 22:22:58 2000 +0000
@@ -0,0 +1,2445 @@
+/* $NetBSD: nfs_subs.c,v 1.77.2.2 2000/10/30 22:22:58 tv Exp $ */
+
+/*
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 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.
+ *
+ * @(#)nfs_subs.c 8.8 (Berkeley) 5/22/95
+ */
+
+#include "fs_nfs.h"
+#include "opt_nfsserver.h"
+#include "opt_iso.h"
+#include "opt_inet.h"
+
+/*
+ * These functions support the macros and help fiddle mbuf chains for
+ * the nfs op functions. They do things like create the rpc header and
+ * copy data between mbuf chains and uio lists.
+ */
+#include <sys/param.h>
+#include <sys/proc.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/mount.h>
+#include <sys/vnode.h>
+#include <sys/namei.h>
+#include <sys/mbuf.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/malloc.h>
+#include <sys/time.h>
+#include <sys/dirent.h>
+
+#include <vm/vm.h>
+
+#include <uvm/uvm_extern.h>
+
+#include <nfs/rpcv2.h>
+#include <nfs/nfsproto.h>
+#include <nfs/nfsnode.h>
+#include <nfs/nfs.h>
+#include <nfs/xdr_subs.h>
+#include <nfs/nfsm_subs.h>
+#include <nfs/nfsmount.h>
+#include <nfs/nqnfs.h>
+#include <nfs/nfsrtt.h>
+#include <nfs/nfs_var.h>
+
+#include <miscfs/specfs/specdev.h>
+
+#include <vm/vm.h>
+
+#include <netinet/in.h>
+#ifdef ISO
+#include <netiso/iso.h>
+#endif
+
+/*
+ * Data items converted to xdr at startup, since they are constant
+ * This is kinda hokey, but may save a little time doing byte swaps
+ */
+u_int32_t nfs_xdrneg1;
+u_int32_t rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr,
+ rpc_mismatch, rpc_auth_unix, rpc_msgaccepted,
+ rpc_auth_kerb;
+u_int32_t nfs_prog, nqnfs_prog, nfs_true, nfs_false;
+
+/* And other global data */
+static u_int32_t nfs_xid = 0;
+nfstype nfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON,
+ NFCHR, NFNON };
+nfstype nfsv3_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK,
+ NFFIFO, NFNON };
+enum vtype nv2tov_type[8] = { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON };
+enum vtype nv3tov_type[8]={ VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO };
+int nfs_ticks;
+
+/* NFS client/server stats. */
+struct nfsstats nfsstats;
+
+/*
+ * Mapping of old NFS Version 2 RPC numbers to generic numbers.
+ */
+int nfsv3_procid[NFS_NPROCS] = {
+ NFSPROC_NULL,
+ NFSPROC_GETATTR,
+ NFSPROC_SETATTR,
+ NFSPROC_NOOP,
+ NFSPROC_LOOKUP,
+ NFSPROC_READLINK,
+ NFSPROC_READ,
+ NFSPROC_NOOP,
+ NFSPROC_WRITE,
+ NFSPROC_CREATE,
+ NFSPROC_REMOVE,
+ NFSPROC_RENAME,
+ NFSPROC_LINK,
+ NFSPROC_SYMLINK,
+ NFSPROC_MKDIR,
+ NFSPROC_RMDIR,
+ NFSPROC_READDIR,
+ NFSPROC_FSSTAT,
+ NFSPROC_NOOP,
+ NFSPROC_NOOP,
+ NFSPROC_NOOP,
+ NFSPROC_NOOP,
+ NFSPROC_NOOP,
+ NFSPROC_NOOP,
+ NFSPROC_NOOP,
+ NFSPROC_NOOP
+};
+
+/*
+ * and the reverse mapping from generic to Version 2 procedure numbers
+ */
+int nfsv2_procid[NFS_NPROCS] = {
+ NFSV2PROC_NULL,
+ NFSV2PROC_GETATTR,
+ NFSV2PROC_SETATTR,
+ NFSV2PROC_LOOKUP,
+ NFSV2PROC_NOOP,
+ NFSV2PROC_READLINK,
+ NFSV2PROC_READ,
+ NFSV2PROC_WRITE,
+ NFSV2PROC_CREATE,
+ NFSV2PROC_MKDIR,
+ NFSV2PROC_SYMLINK,
+ NFSV2PROC_CREATE,
+ NFSV2PROC_REMOVE,
+ NFSV2PROC_RMDIR,
+ NFSV2PROC_RENAME,
+ NFSV2PROC_LINK,
+ NFSV2PROC_READDIR,
+ NFSV2PROC_NOOP,
+ NFSV2PROC_STATFS,
+ NFSV2PROC_NOOP,
+ NFSV2PROC_NOOP,
+ NFSV2PROC_NOOP,
+ NFSV2PROC_NOOP,
+ NFSV2PROC_NOOP,
+ NFSV2PROC_NOOP,
+ NFSV2PROC_NOOP,
+};
+
+/*
+ * Maps errno values to nfs error numbers.
+ * Use NFSERR_IO as the catch all for ones not specifically defined in
+ * RFC 1094.
+ */
+static u_char nfsrv_v2errmap[ELAST] = {
+ NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR,
+ NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO,
+ NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
+ NFSERR_IO, NFSERR_IO,
+};
+
+/*
+ * Maps errno values to nfs error numbers.
+ * Although it is not obvious whether or not NFS clients really care if
+ * a returned error value is in the specified list for the procedure, the
+ * safest thing to do is filter them appropriately. For Version 2, the
+ * X/Open XNFS document is the only specification that defines error values
+ * for each RPC (The RFC simply lists all possible error values for all RPCs),
+ * so I have decided to not do this for Version 2.
+ * The first entry is the default error return and the rest are the valid
+ * errors for that RPC in increasing numeric order.
+ */
+static short nfsv3err_null[] = {
+ 0,
+ 0,
+};
+
+static short nfsv3err_getattr[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_setattr[] = {
+ NFSERR_IO,
+ NFSERR_PERM,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_INVAL,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOT_SYNC,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_lookup[] = {
+ NFSERR_IO,
+ NFSERR_NOENT,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_NOTDIR,
+ NFSERR_NAMETOL,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_access[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_readlink[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_INVAL,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_read[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_NXIO,
+ NFSERR_ACCES,
+ NFSERR_INVAL,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ NFSERR_JUKEBOX,
+ 0,
+};
+
+static short nfsv3err_write[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_INVAL,
+ NFSERR_FBIG,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
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