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diff --git a/sys/nfs/nfs_subs.c b/sys/nfs/nfs_subs.c
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+/*
+ * 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
+ */
+
+
+/*
+ * 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>
+#ifdef VFS_LKM
+#include <sys/sysent.h>
+#include <sys/syscall.h>
+#endif
+
+#include <vm/vm.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 <miscfs/specfs/specdev.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_long nfs_xdrneg1;
+u_long rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr,
+ rpc_mismatch, rpc_auth_unix, rpc_msgaccepted,
+ rpc_auth_kerb;
+u_long nfs_prog, nqnfs_prog, nfs_true, nfs_false;
+
+/* And other global data */
+static u_long nfs_xid = 0;
+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_mount_type;
+int nfs_ticks;
+
+/*
+ * 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,
+};
+
+/*
+ * 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,
+ 0,
+};
+
+static short nfsv3err_write[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_INVAL,
+ NFSERR_FBIG,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_create[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_mkdir[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_symlink[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_mknod[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ NFSERR_BADTYPE,
+ 0,
+};
+
+static short nfsv3err_remove[] = {
+ NFSERR_IO,
+ NFSERR_NOENT,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_NOTDIR,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_rmdir[] = {
+ NFSERR_IO,
+ NFSERR_NOENT,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_NOTDIR,
+ NFSERR_INVAL,
+ NFSERR_ROFS,
+ NFSERR_NAMETOL,
+ NFSERR_NOTEMPTY,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_rename[] = {
+ NFSERR_IO,
+ NFSERR_NOENT,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_XDEV,
+ NFSERR_NOTDIR,
+ NFSERR_ISDIR,
+ NFSERR_INVAL,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_MLINK,
+ NFSERR_NAMETOL,
+ NFSERR_NOTEMPTY,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_link[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_EXIST,
+ NFSERR_XDEV,
+ NFSERR_NOTDIR,
+ NFSERR_INVAL,
+ NFSERR_NOSPC,
+ NFSERR_ROFS,
+ NFSERR_MLINK,
+ NFSERR_NAMETOL,
+ NFSERR_DQUOT,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_NOTSUPP,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_readdir[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_NOTDIR,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_BAD_COOKIE,
+ NFSERR_TOOSMALL,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_readdirplus[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_ACCES,
+ NFSERR_NOTDIR,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_BAD_COOKIE,
+ NFSERR_NOTSUPP,
+ NFSERR_TOOSMALL,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_fsstat[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_fsinfo[] = {
+ NFSERR_STALE,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_pathconf[] = {
+ NFSERR_STALE,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short nfsv3err_commit[] = {
+ NFSERR_IO,
+ NFSERR_IO,
+ NFSERR_STALE,
+ NFSERR_BADHANDLE,
+ NFSERR_SERVERFAULT,
+ 0,
+};
+
+static short *nfsrv_v3errmap[] = {
+ nfsv3err_null,
+ nfsv3err_getattr,
+ nfsv3err_setattr,
+ nfsv3err_lookup,
+ nfsv3err_access,
+ nfsv3err_readlink,
+ nfsv3err_read,
+ nfsv3err_write,
+ nfsv3err_create,
+ nfsv3err_mkdir,
+ nfsv3err_symlink,
+ nfsv3err_mknod,
+ nfsv3err_remove,
+ nfsv3err_rmdir,
+ nfsv3err_rename,
+ nfsv3err_link,
+ nfsv3err_readdir,
+ nfsv3err_readdirplus,
+ nfsv3err_fsstat,
+ nfsv3err_fsinfo,
+ nfsv3err_pathconf,
+ nfsv3err_commit,
+};
+
+extern struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON];
+extern struct nfsrtt nfsrtt;
+extern time_t nqnfsstarttime;
+extern int nqsrv_clockskew;
+extern int nqsrv_writeslack;
+extern int nqsrv_maxlease;
+extern struct nfsstats nfsstats;
+extern int nqnfs_piggy[NFS_NPROCS];
+extern nfstype nfsv2_type[9];
+extern nfstype nfsv3_type[9];
+extern struct nfsnodehashhead *nfsnodehashtbl;
+extern u_long nfsnodehash;
+
+#ifdef VFS_LKM
+struct getfh_args;
+extern int getfh(struct proc *, struct getfh_args *, int *);
+struct nfssvc_args;
+extern int nfssvc(struct proc *, struct nfssvc_args *, int *);
+#endif
+
+LIST_HEAD(nfsnodehashhead, nfsnode);
+
+/*
+ * Create the header for an rpc request packet
+ * The hsiz is the size of the rest of the nfs request header.
+ * (just used to decide if a cluster is a good idea)
+ */
+struct mbuf *
+nfsm_reqh(vp, procid, hsiz, bposp)
+ struct vnode *vp;
+ u_long procid;
+ int hsiz;
+ caddr_t *bposp;
+{
+ register struct mbuf *mb;
+ register u_long *tl;
+ register caddr_t bpos;
+ struct mbuf *mb2;
+ struct nfsmount *nmp;
+ int nqflag;
+
+ MGET(mb, M_WAIT, MT_DATA);
+ if (hsiz >= MINCLSIZE)
+ MCLGET(mb, M_WAIT);
+ mb->m_len = 0;
+ bpos = mtod(mb, caddr_t);
+
+ /*
+ * For NQNFS, add lease request.
+ */
+ if (vp) {
+ nmp = VFSTONFS(vp->v_mount);
+ if (nmp->nm_flag & NFSMNT_NQNFS) {
+ nqflag = NQNFS_NEEDLEASE(vp, procid);
+ if (nqflag) {
+ nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED);
+ *tl++ = txdr_unsigned(nqflag);
+ *tl = txdr_unsigned(nmp->nm_leaseterm);
+ } else {
+ nfsm_build(tl, u_long *, NFSX_UNSIGNED);
+ *tl = 0;
+ }
+ }
+ }
+ /* Finally, return values */
+ *bposp = bpos;
+ return (mb);
+}
+
+/*
+ * Build the RPC header and fill in the authorization info.
+ * The authorization string argument is only used when the credentials
+ * come from outside of the kernel.
+ * Returns the head of the mbuf list.
+ */
+struct mbuf *
+nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len,
+ verf_str, mrest, mrest_len, mbp, xidp)
+ register struct ucred *cr;
+ int nmflag;
+ int procid;
+ int auth_type;
+ int auth_len;
+ char *auth_str;
+ int verf_len;
+ char *verf_str;
+ struct mbuf *mrest;
+ int mrest_len;
+ struct mbuf **mbp;
+ u_long *xidp;
+{
+ register struct mbuf *mb;
+ register u_long *tl;
+ register caddr_t bpos;
+ register int i;
+ struct mbuf *mreq, *mb2;
+ int siz, grpsiz, authsiz;
+
+ authsiz = nfsm_rndup(auth_len);
+ MGETHDR(mb, M_WAIT, MT_DATA);
+ if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) {
+ MCLGET(mb, M_WAIT);
+ } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) {
+ MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED);
+ } else {
+ MH_ALIGN(mb, 8 * NFSX_UNSIGNED);
+ }
+ mb->m_len = 0;
+ mreq = mb;
+ bpos = mtod(mb, caddr_t);
+
+ /*
+ * First the RPC header.
+ */
+ nfsm_build(tl, u_long *, 8 * NFSX_UNSIGNED);
+ if (++nfs_xid == 0)
+ nfs_xid++;
+ *tl++ = *xidp = txdr_unsigned(nfs_xid);
+ *tl++ = rpc_call;
+ *tl++ = rpc_vers;
+ if (nmflag & NFSMNT_NQNFS) {
+ *tl++ = txdr_unsigned(NQNFS_PROG);
+ *tl++ = txdr_unsigned(NQNFS_VER3);
+ } else {
+ *tl++ = txdr_unsigned(NFS_PROG);
+ if (nmflag & NFSMNT_NFSV3)
+ *tl++ = txdr_unsigned(NFS_VER3);
+ else
+ *tl++ = txdr_unsigned(NFS_VER2);
+ }
+ if (nmflag & NFSMNT_NFSV3)
+ *tl++ = txdr_unsigned(procid);
+ else
+ *tl++ = txdr_unsigned(nfsv2_procid[procid]);
+
+ /*
+ * And then the authorization cred.
+ */
+ *tl++ = txdr_unsigned(auth_type);
+ *tl = txdr_unsigned(authsiz);
+ switch (auth_type) {
+ case RPCAUTH_UNIX:
+ nfsm_build(tl, u_long *, auth_len);
+ *tl++ = 0; /* stamp ?? */
+ *tl++ = 0; /* NULL hostname */
+ *tl++ = txdr_unsigned(cr->cr_uid);
+ *tl++ = txdr_unsigned(cr->cr_groups[0]);
+ grpsiz = (auth_len >> 2) - 5;
+ *tl++ = txdr_unsigned(grpsiz);
+ for (i = 1; i <= grpsiz; i++)
+ *tl++ = txdr_unsigned(cr->cr_groups[i]);
+ break;
+ case RPCAUTH_KERB4:
+ siz = auth_len;
+ while (siz > 0) {
+ if (M_TRAILINGSPACE(mb) == 0) {
+ MGET(mb2, M_WAIT, MT_DATA);
+ if (siz >= MINCLSIZE)
+ MCLGET(mb2, M_WAIT);
+ mb->m_next = mb2;
+ mb = mb2;
+ mb->m_len = 0;
+ bpos = mtod(mb, caddr_t);
+ }
+ i = min(siz, M_TRAILINGSPACE(mb));
+ bcopy(auth_str, bpos, i);
+ mb->m_len += i;
+ auth_str += i;
+ bpos += i;
+ siz -= i;
+ }
+ if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) {
+ for (i = 0; i < siz; i++)
+ *bpos++ = '\0';
+ mb->m_len += siz;
+ }
+ break;
+ };
+
+ /*
+ * And the verifier...
+ */
+ nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED);
+ if (verf_str) {
+ *tl++ = txdr_unsigned(RPCAUTH_KERB4);
+ *tl = txdr_unsigned(verf_len);
+ siz = verf_len;
+ while (siz > 0) {
+ if (M_TRAILINGSPACE(mb) == 0) {
+ MGET(mb2, M_WAIT, MT_DATA);
+ if (siz >= MINCLSIZE)
+ MCLGET(mb2, M_WAIT);
+ mb->m_next = mb2;
+ mb = mb2;
+ mb->m_len = 0;
+ bpos = mtod(mb, caddr_t);
+ }
+ i = min(siz, M_TRAILINGSPACE(mb));
+ bcopy(verf_str, bpos, i);
+ mb->m_len += i;
+ verf_str += i;
+ bpos += i;
+ siz -= i;
+ }
+ if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) {
+ for (i = 0; i < siz; i++)
+ *bpos++ = '\0';
+ mb->m_len += siz;
+ }
+ } else {
+ *tl++ = txdr_unsigned(RPCAUTH_NULL);
+ *tl = 0;
+ }
+ mb->m_next = mrest;
+ mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len;
+ mreq->m_pkthdr.rcvif = (struct ifnet *)0;
+ *mbp = mb;
+ return (mreq);
+}
+
+/*
+ * copies mbuf chain to the uio scatter/gather list
+ */
+int
+nfsm_mbuftouio(mrep, uiop, siz, dpos)
+ struct mbuf **mrep;
+ register struct uio *uiop;
+ int siz;
+ caddr_t *dpos;
+{
+ register char *mbufcp, *uiocp;
+ register int xfer, left, len;
+ register struct mbuf *mp;
+ long uiosiz, rem;
+ int error = 0;
+
+ mp = *mrep;
+ mbufcp = *dpos;
+ len = mtod(mp, caddr_t)+mp->m_len-mbufcp;
+ rem = nfsm_rndup(siz)-siz;
+ while (siz > 0) {
+ if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL)
+ return (EFBIG);
+ left = uiop->uio_iov->iov_len;
+ uiocp = uiop->uio_iov->iov_base;
+ if (left > siz)
+ left = siz;
+ uiosiz = left;
+ while (left > 0) {
+ while (len == 0) {
+ mp = mp->m_next;
+ if (mp == NULL)
+ return (EBADRPC);
+ mbufcp = mtod(mp, caddr_t);
+ len = mp->m_len;
+ }
+ xfer = (left > len) ? len : left;
+#ifdef notdef
+ /* Not Yet.. */
+ if (uiop->uio_iov->iov_op != NULL)
+ (*(uiop->uio_iov->iov_op))
+ (mbufcp, uiocp, xfer);
+ else
+#endif
+ if (uiop->uio_segflg == UIO_SYSSPACE)
+ bcopy(mbufcp, uiocp, xfer);
+ else
+ copyout(mbufcp, uiocp, xfer);
+ left -= xfer;
+ len -= xfer;
+ mbufcp += xfer;
+ uiocp += xfer;
+ uiop->uio_offset += xfer;
+ uiop->uio_resid -= xfer;
+ }
+ if (uiop->uio_iov->iov_len <= siz) {
+ uiop->uio_iovcnt--;
+ uiop->uio_iov++;
+ } else {
+ uiop->uio_iov->iov_base += uiosiz;
+ uiop->uio_iov->iov_len -= uiosiz;
+ }
+ siz -= uiosiz;
+ }
+ *dpos = mbufcp;
+ *mrep = mp;
+ if (rem > 0) {
+ if (len < rem)
+ error = nfs_adv(mrep, dpos, rem, len);
+ else
+ *dpos += rem;
+ }
+ return (error);
+}
+
+/*
+ * copies a uio scatter/gather list to an mbuf chain...
+ */
+int
+nfsm_uiotombuf(uiop, mq, siz, bpos)
+ register struct uio *uiop;
+ struct mbuf **mq;
+ int siz;
+ caddr_t *bpos;
+{
+ register char *uiocp;
+ register struct mbuf *mp, *mp2;
+ register int xfer, left, mlen;
+ int uiosiz, clflg, rem;
+ char *cp;
+
+ if (siz > MLEN) /* or should it >= MCLBYTES ?? */
+ clflg = 1;
+ else
+ clflg = 0;
+ rem = nfsm_rndup(siz)-siz;
+ mp = mp2 = *mq;
+ while (siz > 0) {
+ if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL)
+ return (EINVAL);
+ left = uiop->uio_iov->iov_len;
+ uiocp = uiop->uio_iov->iov_base;
+ if (left > siz)
+ left = siz;
+ uiosiz = left;
+ while (left > 0) {
+ mlen = M_TRAILINGSPACE(mp);
+ if (mlen == 0) {
+ MGET(mp, M_WAIT, MT_DATA);
+ if (clflg)
+ MCLGET(mp, M_WAIT);
+ mp->m_len = 0;
+ mp2->m_next = mp;
+ mp2 = mp;
+ mlen = M_TRAILINGSPACE(mp);
+ }
+ xfer = (left > mlen) ? mlen : left;
+#ifdef notdef
+ /* Not Yet.. */
+ if (uiop->uio_iov->iov_op != NULL)
+ (*(uiop->uio_iov->iov_op))
+ (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer);
+ else
+#endif
+ if (uiop->uio_segflg == UIO_SYSSPACE)
+ bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer);
+ else
+ copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer);
+ mp->m_len += xfer;
+ left -= xfer;
+ uiocp += xfer;
+ uiop->uio_offset += xfer;
+ uiop->uio_resid -= xfer;
+ }
+ if (uiop->uio_iov->iov_len <= siz) {
+ uiop->uio_iovcnt--;
+ uiop->uio_iov++;
+ } else {
+ uiop->uio_iov->iov_base += uiosiz;
+ uiop->uio_iov->iov_len -= uiosiz;
+ }
+ siz -= uiosiz;
+ }
+ if (rem > 0) {
+ if (rem > M_TRAILINGSPACE(mp)) {
+ MGET(mp, M_WAIT, MT_DATA);
+ mp->m_len = 0;
+ mp2->m_next = mp;
+ }
+ cp = mtod(mp, caddr_t)+mp->m_len;
+ for (left = 0; left < rem; left++)
+ *cp++ = '\0';
+ mp->m_len += rem;
+ *bpos = cp;
+ } else
+ *bpos = mtod(mp, caddr_t)+mp->m_len;
+ *mq = mp;
+ return (0);
+}
+
+/*
+ * Help break down an mbuf chain by setting the first siz bytes contiguous
+ * pointed to by returned val.
+ * This is used by the macros nfsm_dissect and nfsm_dissecton for tough
+ * cases. (The macros use the vars. dpos and dpos2)
+ */
+int
+nfsm_disct(mdp, dposp, siz, left, cp2)
+ struct mbuf **mdp;
+ caddr_t *dposp;
+ int siz;
+ int left;
+ caddr_t *cp2;
+{
+ register struct mbuf *mp, *mp2;
+ register int siz2, xfer;
+ register caddr_t p;
+
+ mp = *mdp;
+ while (left == 0) {
+ *mdp = mp = mp->m_next;
+ if (mp == NULL)
+ return (EBADRPC);
+ left = mp->m_len;
+ *dposp = mtod(mp, caddr_t);
+ }
+ if (left >= siz) {
+ *cp2 = *dposp;
+ *dposp += siz;
+ } else if (mp->m_next == NULL) {
+ return (EBADRPC);
+ } else if (siz > MHLEN) {
+ panic("nfs S too big");
+ } else {
+ MGET(mp2, M_WAIT, MT_DATA);
+ mp2->m_next = mp->m_next;
+ mp->m_next = mp2;
+ mp->m_len -= left;
+ mp = mp2;
+ *cp2 = p = mtod(mp, caddr_t);
+ bcopy(*dposp, p, left); /* Copy what was left */
+ siz2 = siz-left;
+ p += left;
+ mp2 = mp->m_next;
+ /* Loop around copying up the siz2 bytes */
+ while (siz2 > 0) {
+ if (mp2 == NULL)
+ return (EBADRPC);
+ xfer = (siz2 > mp2->m_len) ? mp2->m_len : siz2;
+ if (xfer > 0) {
+ bcopy(mtod(mp2, caddr_t), p, xfer);
+ NFSMADV(mp2, xfer);
+ mp2->m_len -= xfer;
+ p += xfer;
+ siz2 -= xfer;
+ }
+ if (siz2 > 0)
+ mp2 = mp2->m_next;
+ }
+ mp->m_len = siz;
+ *mdp = mp2;
+ *dposp = mtod(mp2, caddr_t);
+ }
+ return (0);
+}
+
+/*
+ * Advance the position in the mbuf chain.
+ */
+int
+nfs_adv(mdp, dposp, offs, left)
+ struct mbuf **mdp;
+ caddr_t *dposp;
+ int offs;
+ int left;
+{
+ register struct mbuf *m;
+ register int s;
+
+ m = *mdp;
+ s = left;
+ while (s < offs) {
+ offs -= s;
+ m = m->m_next;
+ if (m == NULL)
+ return (EBADRPC);
+ s = m->m_len;
+ }
+ *mdp = m;
+ *dposp = mtod(m, caddr_t)+offs;
+ return (0);
+}
+
+/*
+ * Copy a string into mbufs for the hard cases...
+ */
+int
+nfsm_strtmbuf(mb, bpos, cp, siz)
+ struct mbuf **mb;
+ char **bpos;
+ char *cp;
+ long siz;
+{
+ register struct mbuf *m1 = 0, *m2;
+ long left, xfer, len, tlen;
+ u_long *tl;
+ int putsize;
+
+ putsize = 1;
+ m2 = *mb;
+ left = M_TRAILINGSPACE(m2);
+ if (left > 0) {
+ tl = ((u_long *)(*bpos));
+ *tl++ = txdr_unsigned(siz);
+ putsize = 0;
+ left -= NFSX_UNSIGNED;
+ m2->m_len += NFSX_UNSIGNED;
+ if (left > 0) {
+ bcopy(cp, (caddr_t) tl, left);
+ siz -= left;
+ cp += left;
+ m2->m_len += left;
+ left = 0;
+ }
+ }
+ /* Loop around adding mbufs */
+ while (siz > 0) {
+ MGET(m1, M_WAIT, MT_DATA);
+ if (siz > MLEN)
+ MCLGET(m1, M_WAIT);
+ m1->m_len = NFSMSIZ(m1);
+ m2->m_next = m1;
+ m2 = m1;
+ tl = mtod(m1, u_long *);
+ tlen = 0;
+ if (putsize) {
+ *tl++ = txdr_unsigned(siz);
+ m1->m_len -= NFSX_UNSIGNED;
+ tlen = NFSX_UNSIGNED;
+ putsize = 0;
+ }
+ if (siz < m1->m_len) {
+ len = nfsm_rndup(siz);
+ xfer = siz;
+ if (xfer < len)
+ *(tl+(xfer>>2)) = 0;
+ } else {
+ xfer = len = m1->m_len;
+ }
+ bcopy(cp, (caddr_t) tl, xfer);
+ m1->m_len = len+tlen;
+ siz -= xfer;
+ cp += xfer;
+ }
+ *mb = m1;
+ *bpos = mtod(m1, caddr_t)+m1->m_len;
+ return (0);
+}
+
+/*
+ * Called once to initialize data structures...
+ */
+int
+nfs_init(vfsp)
+ struct vfsconf *vfsp;
+{
+ register int i;
+
+ /*
+ * Check to see if major data structures haven't bloated.
+ */
+ if (sizeof (struct nfsnode) > NFS_NODEALLOC) {
+ printf("struct nfsnode bloated (> %dbytes)\n", NFS_NODEALLOC);
+ printf("Try reducing NFS_SMALLFH\n");
+ }
+ if (sizeof (struct nfsmount) > NFS_MNTALLOC) {
+ printf("struct nfsmount bloated (> %dbytes)\n", NFS_MNTALLOC);
+ printf("Try reducing NFS_MUIDHASHSIZ\n");
+ }
+ if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) {
+ printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC);
+ printf("Try reducing NFS_UIDHASHSIZ\n");
+ }
+ if (sizeof (struct nfsuid) > NFS_UIDALLOC) {
+ printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC);
+ printf("Try unionizing the nu_nickname and nu_flag fields\n");
+ }
+ nfs_mount_type = vfsp->vfc_typenum;
+ nfsrtt.pos = 0;
+ rpc_vers = txdr_unsigned(RPC_VER2);
+ rpc_call = txdr_unsigned(RPC_CALL);
+ rpc_reply = txdr_unsigned(RPC_REPLY);
+ rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED);
+ rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED);
+ rpc_mismatch = txdr_unsigned(RPC_MISMATCH);
+ rpc_autherr = txdr_unsigned(RPC_AUTHERR);
+ rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX);
+ rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4);
+ nfs_prog = txdr_unsigned(NFS_PROG);
+ nqnfs_prog = txdr_unsigned(NQNFS_PROG);
+ nfs_true = txdr_unsigned(TRUE);
+ nfs_false = txdr_unsigned(FALSE);
+ nfs_xdrneg1 = txdr_unsigned(-1);
+ nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000;
+ if (nfs_ticks < 1)
+ nfs_ticks = 1;
+ /* Ensure async daemons disabled */
+ for (i = 0; i < NFS_MAXASYNCDAEMON; i++)
+ nfs_iodwant[i] = (struct proc *)0;
+ TAILQ_INIT(&nfs_bufq);
+ nfs_nhinit(); /* Init the nfsnode table */
+ nfsrv_init(0); /* Init server data structures */
+ nfsrv_initcache(); /* Init the server request cache */
+
+ /*
+ * Initialize the nqnfs server stuff.
+ */
+ if (nqnfsstarttime == 0) {
+ nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease
+ + nqsrv_clockskew + nqsrv_writeslack;
+ NQLOADNOVRAM(nqnfsstarttime);
+ CIRCLEQ_INIT(&nqtimerhead);
+ nqfhhashtbl = hashinit(NQLCHSZ, M_NQLEASE, &nqfhhash);
+ }
+
+ /*
+ * Initialize reply list and start timer
+ */
+ TAILQ_INIT(&nfs_reqq);
+ nfs_timer(0);
+ return (0);
+}
+
+/*
+ * Attribute cache routines.
+ * nfs_loadattrcache() - loads or updates the cache contents from attributes
+ * that are on the mbuf list
+ * nfs_getattrcache() - returns valid attributes if found in cache, returns
+ * error otherwise
+ */
+
+/*
+ * Load the attribute cache (that lives in the nfsnode entry) with
+ * the values on the mbuf list and
+ * Iff vap not NULL
+ * copy the attributes to *vaper
+ */
+int
+nfs_loadattrcache(vpp, mdp, dposp, vaper)
+ struct vnode **vpp;
+ struct mbuf **mdp;
+ caddr_t *dposp;
+ struct vattr *vaper;
+{
+ register struct vnode *vp = *vpp;
+ register struct vattr *vap;
+ register struct nfs_fattr *fp;
+ extern int (**spec_nfsv2nodeop_p)();
+ register struct nfsnode *np;
+ register struct nfsnodehashhead *nhpp;
+ register long t1;
+ caddr_t cp2;
+ int error = 0, rdev;
+ struct mbuf *md;
+ enum vtype vtyp;
+ u_short vmode;
+ struct timespec mtime;
+ struct vnode *nvp;
+ quad_t tval;
+ int v3 = NFS_ISV3(vp);
+
+ md = *mdp;
+ t1 = (mtod(md, caddr_t) + md->m_len) - *dposp;
+ if (error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2))
+ return (error);
+ fp = (struct nfs_fattr *)cp2;
+ if (v3) {
+ vtyp = nfsv3tov_type(fp->fa_type);
+ vmode = fxdr_unsigned(u_short, fp->fa_mode);
+ rdev = makedev(fxdr_unsigned(u_char, fp->fa3_rdev.specdata1),
+ fxdr_unsigned(u_char, fp->fa3_rdev.specdata2));
+ fxdr_nfsv3time(&fp->fa3_mtime, &mtime);
+ } else {
+ vtyp = nfsv2tov_type(fp->fa_type);
+ vmode = fxdr_unsigned(u_short, fp->fa_mode);
+ if (vtyp == VNON || vtyp == VREG)
+ vtyp = IFTOVT(vmode);
+ rdev = fxdr_unsigned(long, fp->fa2_rdev);
+ fxdr_nfsv2time(&fp->fa2_mtime, &mtime);
+
+ /*
+ * Really ugly NFSv2 kludge.
+ */
+ if (vtyp == VCHR && rdev == 0xffffffff)
+ vtyp = VFIFO;
+ }
+
+ /*
+ * If v_type == VNON it is a new node, so fill in the v_type,
+ * n_mtime fields. Check to see if it represents a special
+ * device, and if so, check for a possible alias. Once the
+ * correct vnode has been obtained, fill in the rest of the
+ * information.
+ */
+ np = VTONFS(vp);
+ if (vp->v_type == VNON) {
+ vp->v_type = vtyp;
+ if (vp->v_type == VFIFO) {
+ extern int (**fifo_nfsv2nodeop_p)();
+ vp->v_op = fifo_nfsv2nodeop_p;
+ }
+ if (vp->v_type == VCHR || vp->v_type == VBLK) {
+ vp->v_op = spec_nfsv2nodeop_p;
+ nvp = checkalias(vp, (dev_t)rdev, vp->v_mount);
+ if (nvp) {
+ /*
+ * Discard unneeded vnode, but save its nfsnode.
+ * Since the nfsnode does not have a lock, its
+ * vnode lock has to be carried over.
+ */
+ nvp->v_vnlock = vp->v_vnlock;
+ vp->v_vnlock = NULL;
+ nvp->v_data = vp->v_data;
+ vp->v_data = NULL;
+ vp->v_op = spec_vnodeop_p;
+ vrele(vp);
+ vgone(vp);
+ /*
+ * Reinitialize aliased node.
+ */
+ np->n_vnode = nvp;
+ *vpp = vp = nvp;
+ }
+ }
+ np->n_mtime = mtime.ts_sec;
+ }
+ vap = &np->n_vattr;
+ vap->va_type = vtyp;
+ vap->va_mode = (vmode & 07777);
+ vap->va_rdev = (dev_t)rdev;
+ vap->va_mtime = mtime;
+ vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0];
+ if (v3) {
+ vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink);
+ vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid);
+ vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid);
+ fxdr_hyper(&fp->fa3_size, &vap->va_size);
+ vap->va_blocksize = NFS_FABLKSIZE;
+ fxdr_hyper(&fp->fa3_used, &vap->va_bytes);
+ vap->va_fileid = fxdr_unsigned(int, fp->fa3_fileid.nfsuquad[1]);
+ fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime);
+ fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime);
+ vap->va_flags = 0;
+ vap->va_filerev = 0;
+ } else {
+ vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink);
+ vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid);
+ vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid);
+ vap->va_size = fxdr_unsigned(u_long, fp->fa2_size);
+ vap->va_blocksize = fxdr_unsigned(long, fp->fa2_blocksize);
+ vap->va_bytes = fxdr_unsigned(long, fp->fa2_blocks) * NFS_FABLKSIZE;
+ vap->va_fileid = fxdr_unsigned(long, fp->fa2_fileid);
+ fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime);
+ vap->va_flags = 0;
+ vap->va_ctime.ts_sec = fxdr_unsigned(long, fp->fa2_ctime.nfsv2_sec);
+ vap->va_ctime.ts_nsec = 0;
+ vap->va_gen = fxdr_unsigned(u_long, fp->fa2_ctime.nfsv2_usec);
+ vap->va_filerev = 0;
+ }
+ if (vap->va_size != np->n_size) {
+ if (vap->va_type == VREG) {
+ if (np->n_flag & NMODIFIED) {
+ if (vap->va_size < np->n_size)
+ vap->va_size = np->n_size;
+ else
+ np->n_size = vap->va_size;
+ } else
+ np->n_size = vap->va_size;
+ vnode_pager_setsize(vp, (u_long)np->n_size);
+ } else
+ np->n_size = vap->va_size;
+ }
+ np->n_attrstamp = time.tv_sec;
+ if (vaper != NULL) {
+ bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap));
+ if (np->n_flag & NCHG) {
+ if (np->n_flag & NACC)
+ vaper->va_atime = np->n_atim;
+ if (np->n_flag & NUPD)
+ vaper->va_mtime = np->n_mtim;
+ }
+ }
+ return (0);
+}
+
+/*
+ * Check the time stamp
+ * If the cache is valid, copy contents to *vap and return 0
+ * otherwise return an error
+ */
+int
+nfs_getattrcache(vp, vaper)
+ register struct vnode *vp;
+ struct vattr *vaper;
+{
+ register struct nfsnode *np = VTONFS(vp);
+ register struct vattr *vap;
+
+ if ((time.tv_sec - np->n_attrstamp) >= NFS_ATTRTIMEO(np)) {
+ nfsstats.attrcache_misses++;
+ return (ENOENT);
+ }
+ nfsstats.attrcache_hits++;
+ vap = &np->n_vattr;
+ if (vap->va_size != np->n_size) {
+ if (vap->va_type == VREG) {
+ if (np->n_flag & NMODIFIED) {
+ if (vap->va_size < np->n_size)
+ vap->va_size = np->n_size;
+ else
+ np->n_size = vap->va_size;
+ } else
+ np->n_size = vap->va_size;
+ vnode_pager_setsize(vp, (u_long)np->n_size);
+ } else
+ np->n_size = vap->va_size;
+ }
+ bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr));
+ if (np->n_flag & NCHG) {
+ if (np->n_flag & NACC)
+ vaper->va_atime = np->n_atim;
+ if (np->n_flag & NUPD)
+ vaper->va_mtime = np->n_mtim;
+ }
+ return (0);
+}
+
+/*
+ * Set up nameidata for a lookup() call and do it
+ */
+int
+nfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag)
+ register struct nameidata *ndp;
+ fhandle_t *fhp;
+ int len;
+ struct nfssvc_sock *slp;
+ struct mbuf *nam;
+ struct mbuf **mdp;
+ caddr_t *dposp;
+ struct vnode **retdirp;
+ struct proc *p;
+ int kerbflag;
+{
+ register int i, rem;
+ register struct mbuf *md;
+ register char *fromcp, *tocp;
+ struct vnode *dp;
+ int error, rdonly;
+ struct componentname *cnp = &ndp->ni_cnd;
+
+ *retdirp = (struct vnode *)0;
+ MALLOC(cnp->cn_pnbuf, char *, len + 1, M_NAMEI, M_WAITOK);
+ /*
+ * Copy the name from the mbuf list to ndp->ni_pnbuf
+ * and set the various ndp fields appropriately.
+ */
+ fromcp = *dposp;
+ tocp = cnp->cn_pnbuf;
+ md = *mdp;
+ rem = mtod(md, caddr_t) + md->m_len - fromcp;
+ cnp->cn_hash = 0;
+ for (i = 0; i < len; i++) {
+ while (rem == 0) {
+ md = md->m_next;
+ if (md == NULL) {
+ error = EBADRPC;
+ goto out;
+ }
+ fromcp = mtod(md, caddr_t);
+ rem = md->m_len;
+ }
+ if (*fromcp == '\0' || *fromcp == '/') {
+ error = EACCES;
+ goto out;
+ }
+ cnp->cn_hash += (unsigned char)*fromcp;
+ *tocp++ = *fromcp++;
+ rem--;
+ }
+ *tocp = '\0';
+ *mdp = md;
+ *dposp = fromcp;
+ len = nfsm_rndup(len)-len;
+ if (len > 0) {
+ if (rem >= len)
+ *dposp += len;
+ else if (error = nfs_adv(mdp, dposp, len, rem))
+ goto out;
+ }
+ ndp->ni_pathlen = tocp - cnp->cn_pnbuf;
+ cnp->cn_nameptr = cnp->cn_pnbuf;
+ /*
+ * Extract and set starting directory.
+ */
+ if (error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp,
+ nam, &rdonly, kerbflag))
+ goto out;
+ if (dp->v_type != VDIR) {
+ vrele(dp);
+ error = ENOTDIR;
+ goto out;
+ }
+ VREF(dp);
+ *retdirp = dp;
+ ndp->ni_startdir = dp;
+ if (rdonly)
+ cnp->cn_flags |= (NOCROSSMOUNT | RDONLY);
+ else
+ cnp->cn_flags |= NOCROSSMOUNT;
+ /*
+ * And call lookup() to do the real work
+ */
+ cnp->cn_proc = p;
+ if (error = lookup(ndp))
+ goto out;
+ /*
+ * Check for encountering a symbolic link
+ */
+ if (cnp->cn_flags & ISSYMLINK) {
+ if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1)
+ vput(ndp->ni_dvp);
+ else
+ vrele(ndp->ni_dvp);
+ vput(ndp->ni_vp);
+ ndp->ni_vp = NULL;
+ error = EINVAL;
+ goto out;
+ }
+ /*
+ * Check for saved name request
+ */
+ if (cnp->cn_flags & (SAVENAME | SAVESTART)) {
+ cnp->cn_flags |= HASBUF;
+ return (0);
+ }
+out:
+ FREE(cnp->cn_pnbuf, M_NAMEI);
+ return (error);
+}
+
+/*
+ * A fiddled version of m_adj() that ensures null fill to a long
+ * boundary and only trims off the back end
+ */
+void
+nfsm_adj(mp, len, nul)
+ struct mbuf *mp;
+ register int len;
+ int nul;
+{
+ register struct mbuf *m;
+ register int count, i;
+ register char *cp;
+
+ /*
+ * Trim from tail. Scan the mbuf chain,
+ * calculating its length and finding the last mbuf.
+ * If the adjustment only affects this mbuf, then just
+ * adjust and return. Otherwise, rescan and truncate
+ * after the remaining size.
+ */
+ count = 0;
+ m = mp;
+ for (;;) {
+ count += m->m_len;
+ if (m->m_next == (struct mbuf *)0)
+ break;
+ m = m->m_next;
+ }
+ if (m->m_len > len) {
+ m->m_len -= len;
+ if (nul > 0) {
+ cp = mtod(m, caddr_t)+m->m_len-nul;
+ for (i = 0; i < nul; i++)
+ *cp++ = '\0';
+ }
+ return;
+ }
+ count -= len;
+ if (count < 0)
+ count = 0;
+ /*
+ * Correct length for chain is "count".
+ * Find the mbuf with last data, adjust its length,
+ * and toss data from remaining mbufs on chain.
+ */
+ for (m = mp; m; m = m->m_next) {
+ if (m->m_len >= count) {
+ m->m_len = count;
+ if (nul > 0) {
+ cp = mtod(m, caddr_t)+m->m_len-nul;
+ for (i = 0; i < nul; i++)
+ *cp++ = '\0';
+ }
+ break;
+ }
+ count -= m->m_len;
+ }
+ for (m = m->m_next;m;m = m->m_next)
+ m->m_len = 0;
+}
+
+/*
+ * Make these functions instead of macros, so that the kernel text size
+ * doesn't get too big...
+ */
+void
+nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp)
+ struct nfsrv_descript *nfsd;
+ int before_ret;
+ register struct vattr *before_vap;
+ int after_ret;
+ struct vattr *after_vap;
+ struct mbuf **mbp;
+ char **bposp;
+{
+ register struct mbuf *mb = *mbp, *mb2;
+ register char *bpos = *bposp;
+ register u_long *tl;
+
+ if (before_ret) {
+ nfsm_build(tl, u_long *, NFSX_UNSIGNED);
+ *tl = nfs_false;
+ } else {
+ nfsm_build(tl, u_long *, 7 * NFSX_UNSIGNED);
+ *tl++ = nfs_true;
+ txdr_hyper(&(before_vap->va_size), tl);
+ tl += 2;
+ txdr_nfsv3time(&(before_vap->va_mtime), tl);
+ tl += 2;
+ txdr_nfsv3time(&(before_vap->va_ctime), tl);
+ }
+ *bposp = bpos;
+ *mbp = mb;
+ nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp);
+}
+
+void
+nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp)
+ struct nfsrv_descript *nfsd;
+ int after_ret;
+ struct vattr *after_vap;
+ struct mbuf **mbp;
+ char **bposp;
+{
+ register struct mbuf *mb = *mbp, *mb2;
+ register char *bpos = *bposp;
+ register u_long *tl;
+ register struct nfs_fattr *fp;
+
+ if (after_ret) {
+ nfsm_build(tl, u_long *, NFSX_UNSIGNED);
+ *tl = nfs_false;
+ } else {
+ nfsm_build(tl, u_long *, NFSX_UNSIGNED + NFSX_V3FATTR);
+ *tl++ = nfs_true;
+ fp = (struct nfs_fattr *)tl;
+ nfsm_srvfattr(nfsd, after_vap, fp);
+ }
+ *mbp = mb;
+ *bposp = bpos;
+}
+
+void
+nfsm_srvfattr(nfsd, vap, fp)
+ register struct nfsrv_descript *nfsd;
+ register struct vattr *vap;
+ register struct nfs_fattr *fp;
+{
+
+ fp->fa_nlink = txdr_unsigned(vap->va_nlink);
+ fp->fa_uid = txdr_unsigned(vap->va_uid);
+ fp->fa_gid = txdr_unsigned(vap->va_gid);
+ if (nfsd->nd_flag & ND_NFSV3) {
+ fp->fa_type = vtonfsv3_type(vap->va_type);
+ fp->fa_mode = vtonfsv3_mode(vap->va_mode);
+ txdr_hyper(&vap->va_size, &fp->fa3_size);
+ txdr_hyper(&vap->va_bytes, &fp->fa3_used);
+ fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev));
+ fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev));
+ fp->fa3_fsid.nfsuquad[0] = 0;
+ fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid);
+ fp->fa3_fileid.nfsuquad[0] = 0;
+ fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid);
+ txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime);
+ txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime);
+ txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime);
+ } else {
+ fp->fa_type = vtonfsv2_type(vap->va_type);
+ fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode);
+ fp->fa2_size = txdr_unsigned(vap->va_size);
+ fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize);
+ if (vap->va_type == VFIFO)
+ fp->fa2_rdev = 0xffffffff;
+ else
+ fp->fa2_rdev = txdr_unsigned(vap->va_rdev);
+ fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE);
+ fp->fa2_fsid = txdr_unsigned(vap->va_fsid);
+ fp->fa2_fileid = txdr_unsigned(vap->va_fileid);
+ txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime);
+ txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime);
+ txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime);
+ }
+}
+
+/*
+ * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked)
+ * - look up fsid in mount list (if not found ret error)
+ * - get vp and export rights by calling VFS_FHTOVP()
+ * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon
+ * - if not lockflag unlock it with VOP_UNLOCK()
+ */
+int
+nfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag)
+ fhandle_t *fhp;
+ int lockflag;
+ struct vnode **vpp;
+ struct ucred *cred;
+ struct nfssvc_sock *slp;
+ struct mbuf *nam;
+ int *rdonlyp;
+ int kerbflag;
+{
+ struct proc *p = curproc; /* XXX */
+ register struct mount *mp;
+ register struct nfsuid *uidp;
+ register int i;
+ struct ucred *credanon;
+ int error, exflags;
+
+ *vpp = (struct vnode *)0;
+ mp = vfs_getvfs(&fhp->fh_fsid);
+ if (!mp)
+ return (ESTALE);
+ error = VFS_FHTOVP(mp, &fhp->fh_fid, nam, vpp, &exflags, &credanon);
+ if (error)
+ return (error);
+ /*
+ * Check/setup credentials.
+ */
+ if (exflags & MNT_EXKERB) {
+ if (!kerbflag) {
+ vput(*vpp);
+ return (NFSERR_AUTHERR | AUTH_TOOWEAK);
+ }
+ } else if (kerbflag) {
+ vput(*vpp);
+ return (NFSERR_AUTHERR | AUTH_TOOWEAK);
+ } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) {
+ cred->cr_uid = credanon->cr_uid;
+ for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++)
+ cred->cr_groups[i] = credanon->cr_groups[i];
+ cred->cr_ngroups = i;
+ }
+ if (exflags & MNT_EXRDONLY)
+ *rdonlyp = 1;
+ else
+ *rdonlyp = 0;
+ if (!lockflag)
+ VOP_UNLOCK(*vpp, 0, p);
+ return (0);
+}
+
+/*
+ * This function compares two net addresses by family and returns TRUE
+ * if they are the same host.
+ * If there is any doubt, return FALSE.
+ * The AF_INET family is handled as a special case so that address mbufs
+ * don't need to be saved to store "struct in_addr", which is only 4 bytes.
+ */
+int
+netaddr_match(family, haddr, nam)
+ int family;
+ union nethostaddr *haddr;
+ struct mbuf *nam;
+{
+ register struct sockaddr_in *inetaddr;
+
+ switch (family) {
+ case AF_INET:
+ inetaddr = mtod(nam, struct sockaddr_in *);
+ if (inetaddr->sin_family == AF_INET &&
+ inetaddr->sin_addr.s_addr == haddr->had_inetaddr)
+ return (1);
+ break;
+#ifdef ISO
+ case AF_ISO:
+ {
+ register struct sockaddr_iso *isoaddr1, *isoaddr2;
+
+ isoaddr1 = mtod(nam, struct sockaddr_iso *);
+ isoaddr2 = mtod(haddr->had_nam, struct sockaddr_iso *);
+ if (isoaddr1->siso_family == AF_ISO &&
+ isoaddr1->siso_nlen > 0 &&
+ isoaddr1->siso_nlen == isoaddr2->siso_nlen &&
+ SAME_ISOADDR(isoaddr1, isoaddr2))
+ return (1);
+ break;
+ }
+#endif /* ISO */
+ default:
+ break;
+ };
+ return (0);
+}
+
+static nfsuint64 nfs_nullcookie = { 0, 0 };
+/*
+ * This function finds the directory cookie that corresponds to the
+ * logical byte offset given.
+ */
+nfsuint64 *
+nfs_getcookie(np, off, add)
+ register struct nfsnode *np;
+ off_t off;
+ int add;
+{
+ register struct nfsdmap *dp, *dp2;
+ register int pos;
+
+ pos = off / NFS_DIRBLKSIZ;
+ if (pos == 0) {
+#ifdef DIAGNOSTIC
+ if (add)
+ panic("nfs getcookie add at 0");
+#endif
+ return (&nfs_nullcookie);
+ }
+ pos--;
+ dp = np->n_cookies.lh_first;
+ if (!dp) {
+ if (add) {
+ MALLOC(dp, struct nfsdmap *, sizeof (struct nfsdmap),
+ M_NFSDIROFF, M_WAITOK);
+ dp->ndm_eocookie = 0;
+ LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list);
+ } else
+ return ((nfsuint64 *)0);
+ }
+ while (pos >= NFSNUMCOOKIES) {
+ pos -= NFSNUMCOOKIES;
+ if (dp->ndm_list.le_next) {
+ if (!add && dp->ndm_eocookie < NFSNUMCOOKIES &&
+ pos >= dp->ndm_eocookie)
+ return ((nfsuint64 *)0);
+ dp = dp->ndm_list.le_next;
+ } else if (add) {
+ MALLOC(dp2, struct nfsdmap *, sizeof (struct nfsdmap),
+ M_NFSDIROFF, M_WAITOK);
+ dp2->ndm_eocookie = 0;
+ LIST_INSERT_AFTER(dp, dp2, ndm_list);
+ dp = dp2;
+ } else
+ return ((nfsuint64 *)0);
+ }
+ if (pos >= dp->ndm_eocookie) {
+ if (add)
+ dp->ndm_eocookie = pos + 1;
+ else
+ return ((nfsuint64 *)0);
+ }
+ return (&dp->ndm_cookies[pos]);
+}
+
+/*
+ * Invalidate cached directory information, except for the actual directory
+ * blocks (which are invalidated separately).
+ * Done mainly to avoid the use of stale offset cookies.
+ */
+void
+nfs_invaldir(vp)
+ register struct vnode *vp;
+{
+ register struct nfsnode *np = VTONFS(vp);
+
+#ifdef DIAGNOSTIC
+ if (vp->v_type != VDIR)
+ panic("nfs: invaldir not dir");
+#endif
+ np->n_direofoffset = 0;
+ np->n_cookieverf.nfsuquad[0] = 0;
+ np->n_cookieverf.nfsuquad[1] = 0;
+ if (np->n_cookies.lh_first)
+ np->n_cookies.lh_first->ndm_eocookie = 0;
+}
+
+/*
+ * The write verifier has changed (probably due to a server reboot), so all
+ * B_NEEDCOMMIT blocks will have to be written again. Since they are on the
+ * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT
+ * flag. Once done the new write verifier can be set for the mount point.
+ */
+void
+nfs_clearcommit(mp)
+ struct mount *mp;
+{
+ register struct vnode *vp, *nvp;
+ register struct buf *bp, *nbp;
+ int s;
+
+ s = splbio();
+loop:
+ for (vp = mp->mnt_vnodelist.lh_first; vp; vp = nvp) {
+ if (vp->v_mount != mp) /* Paranoia */
+ goto loop;
+ nvp = vp->v_mntvnodes.le_next;
+ for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) {
+ nbp = bp->b_vnbufs.le_next;
+ if ((bp->b_flags & (B_BUSY | B_DELWRI | B_NEEDCOMMIT))
+ == (B_DELWRI | B_NEEDCOMMIT))
+ bp->b_flags &= ~B_NEEDCOMMIT;
+ }
+ }
+ splx(s);
+}
+
+/*
+ * Map errnos to NFS error numbers. For Version 3 also filter out error
+ * numbers not specified for the associated procedure.
+ */
+int
+nfsrv_errmap(nd, err)
+ struct nfsrv_descript *nd;
+ register int err;
+{
+ register short *defaulterrp, *errp;
+
+ if (nd->nd_flag & ND_NFSV3) {
+ if (nd->nd_procnum <= NFSPROC_COMMIT) {
+ errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum];
+ while (*++errp) {
+ if (*errp == err)
+ return (err);
+ else if (*errp > err)
+ break;
+ }
+ return ((int)*defaulterrp);
+ } else
+ return (err & 0xffff);
+ }
+ if (err <= ELAST)
+ return ((int)nfsrv_v2errmap[err - 1]);
+ return (NFSERR_IO);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-30 13:10:36 +0000