1466 lines
33 KiB
C
1466 lines
33 KiB
C
/*-
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)nfs_subs.c 8.8 (Berkeley) 5/22/95
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* These functions support the macros and help fiddle mbuf chains for
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* the nfs op functions. They do things like create the rpc header and
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* copy data between mbuf chains and uio lists.
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*/
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#include "opt_inet6.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bio.h>
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#include <sys/buf.h>
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#include <sys/proc.h>
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#include <sys/mount.h>
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#include <sys/vnode.h>
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#include <sys/namei.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/sysent.h>
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#include <sys/syscall.h>
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#include <sys/sysproto.h>
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#include <vm/vm.h>
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#include <vm/vm_object.h>
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#include <vm/vm_extern.h>
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#include <vm/uma.h>
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#include <nfs/rpcv2.h>
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#include <nfs/nfsproto.h>
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#include <nfsserver/nfs.h>
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#include <nfs/xdr_subs.h>
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#include <nfsserver/nfsm_subs.h>
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#include <netinet/in.h>
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/*
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* Data items converted to xdr at startup, since they are constant
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* This is kinda hokey, but may save a little time doing byte swaps
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*/
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u_int32_t nfsrv_nfs_xdrneg1;
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u_int32_t nfsrv_rpc_call, nfsrv_rpc_vers, nfsrv_rpc_reply,
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nfsrv_rpc_msgdenied, nfsrv_rpc_autherr,
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nfsrv_rpc_mismatch, nfsrv_rpc_auth_unix, nfsrv_rpc_msgaccepted;
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u_int32_t nfsrv_nfs_prog, nfsrv_nfs_true, nfsrv_nfs_false;
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/* And other global data */
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static const nfstype nfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR,
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NFLNK, NFNON, NFCHR, NFNON };
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#define vtonfsv2_type(a) txdr_unsigned(nfsv2_type[((int32_t)(a))])
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#define vtonfsv3_mode(m) txdr_unsigned((m) & ALLPERMS)
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int nfsrv_ticks;
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struct nfssvc_sockhead nfssvc_sockhead;
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int nfssvc_sockhead_flag;
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struct nfsd_head nfsd_head;
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int nfsd_head_flag;
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static int nfs_prev_nfssvc_sy_narg;
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static sy_call_t *nfs_prev_nfssvc_sy_call;
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struct mtx nfsd_mtx;
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/*
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* Mapping of old NFS Version 2 RPC numbers to generic numbers.
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*/
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const int nfsrv_nfsv3_procid[NFS_NPROCS] = {
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NFSPROC_NULL,
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NFSPROC_GETATTR,
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NFSPROC_SETATTR,
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NFSPROC_NOOP,
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NFSPROC_LOOKUP,
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NFSPROC_READLINK,
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NFSPROC_READ,
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NFSPROC_NOOP,
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NFSPROC_WRITE,
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NFSPROC_CREATE,
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NFSPROC_REMOVE,
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NFSPROC_RENAME,
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NFSPROC_LINK,
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NFSPROC_SYMLINK,
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NFSPROC_MKDIR,
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NFSPROC_RMDIR,
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NFSPROC_READDIR,
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NFSPROC_FSSTAT,
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NFSPROC_NOOP,
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NFSPROC_NOOP,
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NFSPROC_NOOP,
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NFSPROC_NOOP,
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NFSPROC_NOOP,
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};
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/*
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* and the reverse mapping from generic to Version 2 procedure numbers
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*/
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const int nfsrvv2_procid[NFS_NPROCS] = {
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NFSV2PROC_NULL,
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NFSV2PROC_GETATTR,
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NFSV2PROC_SETATTR,
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NFSV2PROC_LOOKUP,
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NFSV2PROC_NOOP,
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NFSV2PROC_READLINK,
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NFSV2PROC_READ,
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NFSV2PROC_WRITE,
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NFSV2PROC_CREATE,
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NFSV2PROC_MKDIR,
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NFSV2PROC_SYMLINK,
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NFSV2PROC_CREATE,
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NFSV2PROC_REMOVE,
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NFSV2PROC_RMDIR,
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NFSV2PROC_RENAME,
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NFSV2PROC_LINK,
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NFSV2PROC_READDIR,
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NFSV2PROC_NOOP,
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NFSV2PROC_STATFS,
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NFSV2PROC_NOOP,
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NFSV2PROC_NOOP,
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NFSV2PROC_NOOP,
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NFSV2PROC_NOOP,
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};
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/*
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* Maps errno values to nfs error numbers.
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* Use 0 (which gets converted to NFSERR_IO) as the catch all for ones not
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* specifically defined in RFC 1094.
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*/
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static const u_char nfsrv_v2errmap[ELAST] = {
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NFSERR_PERM, NFSERR_NOENT, 0, 0, 0,
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NFSERR_NXIO, 0, 0, 0, 0,
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0, 0, NFSERR_ACCES, 0, 0,
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0, NFSERR_EXIST, 0, NFSERR_NODEV, NFSERR_NOTDIR,
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NFSERR_ISDIR, 0, 0, 0, 0,
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0, NFSERR_FBIG, NFSERR_NOSPC, 0, NFSERR_ROFS,
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0, 0, 0, 0, 0,
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0, 0, 0, 0, 0,
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0, 0, 0, 0, 0,
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0, 0, 0, 0, 0,
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0, 0, 0, 0, 0,
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0, 0, 0, 0, 0,
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0, 0, NFSERR_NAMETOL, 0, 0,
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NFSERR_NOTEMPTY, 0, 0, NFSERR_DQUOT, NFSERR_STALE,
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0
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};
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/*
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* Maps errno values to nfs error numbers.
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* Although it is not obvious whether or not NFS clients really care if
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* a returned error value is in the specified list for the procedure, the
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* safest thing to do is filter them appropriately. For Version 2, the
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* X/Open XNFS document is the only specification that defines error values
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* for each RPC (The RFC simply lists all possible error values for all RPCs),
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* so I have decided to not do this for Version 2.
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* The first entry is the default error return and the rest are the valid
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* errors for that RPC in increasing numeric order.
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*/
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static const short nfsv3err_null[] = {
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0,
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0,
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};
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static const short nfsv3err_getattr[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_setattr[] = {
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NFSERR_IO,
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NFSERR_PERM,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_INVAL,
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NFSERR_NOSPC,
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NFSERR_ROFS,
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NFSERR_DQUOT,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_NOT_SYNC,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_lookup[] = {
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NFSERR_IO,
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NFSERR_NOENT,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_NOTDIR,
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NFSERR_NAMETOL,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_access[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_readlink[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_INVAL,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_NOTSUPP,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_read[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_NXIO,
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NFSERR_ACCES,
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NFSERR_INVAL,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_write[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_INVAL,
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NFSERR_FBIG,
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NFSERR_NOSPC,
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NFSERR_ROFS,
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NFSERR_DQUOT,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_create[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_EXIST,
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NFSERR_NOTDIR,
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NFSERR_NOSPC,
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NFSERR_ROFS,
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NFSERR_NAMETOL,
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NFSERR_DQUOT,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_NOTSUPP,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_mkdir[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_EXIST,
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NFSERR_NOTDIR,
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NFSERR_NOSPC,
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NFSERR_ROFS,
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NFSERR_NAMETOL,
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NFSERR_DQUOT,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_NOTSUPP,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_symlink[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_EXIST,
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NFSERR_NOTDIR,
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NFSERR_NOSPC,
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NFSERR_ROFS,
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NFSERR_NAMETOL,
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NFSERR_DQUOT,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_NOTSUPP,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_mknod[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_EXIST,
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NFSERR_NOTDIR,
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NFSERR_NOSPC,
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NFSERR_ROFS,
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NFSERR_NAMETOL,
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NFSERR_DQUOT,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_NOTSUPP,
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NFSERR_SERVERFAULT,
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NFSERR_BADTYPE,
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0,
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};
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static const short nfsv3err_remove[] = {
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NFSERR_IO,
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NFSERR_NOENT,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_NOTDIR,
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NFSERR_ROFS,
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NFSERR_NAMETOL,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_rmdir[] = {
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NFSERR_IO,
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NFSERR_NOENT,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_EXIST,
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NFSERR_NOTDIR,
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NFSERR_INVAL,
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NFSERR_ROFS,
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NFSERR_NAMETOL,
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NFSERR_NOTEMPTY,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_NOTSUPP,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_rename[] = {
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NFSERR_IO,
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NFSERR_NOENT,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_EXIST,
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NFSERR_XDEV,
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NFSERR_NOTDIR,
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NFSERR_ISDIR,
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NFSERR_INVAL,
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NFSERR_NOSPC,
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NFSERR_ROFS,
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NFSERR_MLINK,
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NFSERR_NAMETOL,
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NFSERR_NOTEMPTY,
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NFSERR_DQUOT,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_NOTSUPP,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_link[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_EXIST,
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NFSERR_XDEV,
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NFSERR_NOTDIR,
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NFSERR_INVAL,
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NFSERR_NOSPC,
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NFSERR_ROFS,
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NFSERR_MLINK,
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NFSERR_NAMETOL,
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NFSERR_DQUOT,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_NOTSUPP,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_readdir[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_NOTDIR,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_BAD_COOKIE,
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NFSERR_TOOSMALL,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_readdirplus[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_ACCES,
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NFSERR_NOTDIR,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_BAD_COOKIE,
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NFSERR_NOTSUPP,
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NFSERR_TOOSMALL,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_fsstat[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_fsinfo[] = {
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NFSERR_STALE,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_pathconf[] = {
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NFSERR_STALE,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short nfsv3err_commit[] = {
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NFSERR_IO,
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NFSERR_IO,
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NFSERR_STALE,
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NFSERR_BADHANDLE,
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NFSERR_SERVERFAULT,
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0,
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};
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static const short *nfsrv_v3errmap[] = {
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nfsv3err_null,
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nfsv3err_getattr,
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nfsv3err_setattr,
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nfsv3err_lookup,
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nfsv3err_access,
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nfsv3err_readlink,
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nfsv3err_read,
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nfsv3err_write,
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nfsv3err_create,
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nfsv3err_mkdir,
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nfsv3err_symlink,
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nfsv3err_mknod,
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nfsv3err_remove,
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nfsv3err_rmdir,
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nfsv3err_rename,
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nfsv3err_link,
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nfsv3err_readdir,
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nfsv3err_readdirplus,
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nfsv3err_fsstat,
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nfsv3err_fsinfo,
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nfsv3err_pathconf,
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nfsv3err_commit,
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};
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|
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/*
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* Called once to initialize data structures...
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*/
|
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static int
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nfsrv_modevent(module_t mod, int type, void *data)
|
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{
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int error = 0;
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|
|
NET_LOCK_GIANT();
|
|
switch (type) {
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case MOD_LOAD:
|
|
mtx_init(&nfsd_mtx, "nfsd_mtx", NULL, MTX_DEF);
|
|
nfsrv_rpc_vers = txdr_unsigned(RPC_VER2);
|
|
nfsrv_rpc_call = txdr_unsigned(RPC_CALL);
|
|
nfsrv_rpc_reply = txdr_unsigned(RPC_REPLY);
|
|
nfsrv_rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED);
|
|
nfsrv_rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED);
|
|
nfsrv_rpc_mismatch = txdr_unsigned(RPC_MISMATCH);
|
|
nfsrv_rpc_autherr = txdr_unsigned(RPC_AUTHERR);
|
|
nfsrv_rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX);
|
|
nfsrv_nfs_prog = txdr_unsigned(NFS_PROG);
|
|
nfsrv_nfs_true = txdr_unsigned(TRUE);
|
|
nfsrv_nfs_false = txdr_unsigned(FALSE);
|
|
nfsrv_nfs_xdrneg1 = txdr_unsigned(-1);
|
|
nfsrv_ticks = (hz * NFS_TICKINTVL + 500) / 1000;
|
|
if (nfsrv_ticks < 1)
|
|
nfsrv_ticks = 1;
|
|
|
|
nfsrv_initcache(); /* Init the server request cache */
|
|
NFSD_LOCK();
|
|
nfsrv_init(0); /* Init server data structures */
|
|
if (debug_mpsafenet)
|
|
callout_init(&nfsrv_callout, CALLOUT_MPSAFE);
|
|
else
|
|
callout_init(&nfsrv_callout, 0);
|
|
NFSD_UNLOCK();
|
|
nfsrv_timer(0);
|
|
|
|
nfs_prev_nfssvc_sy_narg = sysent[SYS_nfssvc].sy_narg;
|
|
sysent[SYS_nfssvc].sy_narg = 2 | SYF_MPSAFE;
|
|
nfs_prev_nfssvc_sy_call = sysent[SYS_nfssvc].sy_call;
|
|
sysent[SYS_nfssvc].sy_call = (sy_call_t *)nfssvc;
|
|
break;
|
|
|
|
case MOD_UNLOAD:
|
|
if (nfsrv_numnfsd != 0) {
|
|
error = EBUSY;
|
|
break;
|
|
}
|
|
|
|
callout_stop(&nfsrv_callout);
|
|
sysent[SYS_nfssvc].sy_narg = nfs_prev_nfssvc_sy_narg;
|
|
sysent[SYS_nfssvc].sy_call = nfs_prev_nfssvc_sy_call;
|
|
mtx_destroy(&nfsd_mtx);
|
|
break;
|
|
default:
|
|
error = EOPNOTSUPP;
|
|
break;
|
|
}
|
|
NET_UNLOCK_GIANT();
|
|
return error;
|
|
}
|
|
static moduledata_t nfsserver_mod = {
|
|
"nfsserver",
|
|
nfsrv_modevent,
|
|
NULL,
|
|
};
|
|
DECLARE_MODULE(nfsserver, nfsserver_mod, SI_SUB_VFS, SI_ORDER_ANY);
|
|
|
|
/* So that loader and kldload(2) can find us, wherever we are.. */
|
|
MODULE_VERSION(nfsserver, 1);
|
|
|
|
/*
|
|
* Set up nameidata for a lookup() call and do it.
|
|
*
|
|
* If pubflag is set, this call is done for a lookup operation on the
|
|
* public filehandle. In that case we allow crossing mountpoints and
|
|
* absolute pathnames. However, the caller is expected to check that
|
|
* the lookup result is within the public fs, and deny access if
|
|
* it is not.
|
|
*
|
|
* nfs_namei() clears out garbage fields that namei() might leave garbage.
|
|
* This is mainly ni_vp and ni_dvp when an error occurs, and ni_dvp when no
|
|
* error occurs but the parent was not requested.
|
|
*
|
|
* dirp may be set whether an error is returned or not, and must be
|
|
* released by the caller.
|
|
*/
|
|
int
|
|
nfs_namei(struct nameidata *ndp, fhandle_t *fhp, int len,
|
|
struct nfssvc_sock *slp, struct sockaddr *nam, struct mbuf **mdp,
|
|
caddr_t *dposp, struct vnode **retdirp, int v3, struct vattr *retdirattrp,
|
|
int *retdirattr_retp, struct thread *td, int pubflag)
|
|
{
|
|
int i, rem;
|
|
struct mbuf *md;
|
|
char *fromcp, *tocp, *cp;
|
|
struct iovec aiov;
|
|
struct uio auio;
|
|
struct vnode *dp;
|
|
int error, rdonly, linklen;
|
|
struct componentname *cnp = &ndp->ni_cnd;
|
|
int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0;
|
|
|
|
NFSD_LOCK_ASSERT();
|
|
NFSD_UNLOCK();
|
|
mtx_lock(&Giant); /* VFS */
|
|
|
|
*retdirp = NULL;
|
|
cnp->cn_flags |= NOMACCHECK;
|
|
cnp->cn_pnbuf = uma_zalloc(namei_zone, 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;
|
|
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' || (!pubflag && *fromcp == '/')) {
|
|
error = EACCES;
|
|
goto out;
|
|
}
|
|
*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)) != 0)
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Extract and set starting directory.
|
|
*/
|
|
mtx_unlock(&Giant); /* VFS */
|
|
NFSD_LOCK();
|
|
error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp,
|
|
nam, &rdonly, pubflag);
|
|
NFSD_UNLOCK();
|
|
mtx_lock(&Giant); /* VFS */
|
|
if (error)
|
|
goto out;
|
|
if (dp->v_type != VDIR) {
|
|
vrele(dp);
|
|
error = ENOTDIR;
|
|
goto out;
|
|
}
|
|
|
|
if (rdonly)
|
|
cnp->cn_flags |= RDONLY;
|
|
|
|
/*
|
|
* Set return directory. Reference to dp is implicitly transfered
|
|
* to the returned pointer
|
|
*/
|
|
*retdirp = dp;
|
|
if (v3) {
|
|
vn_lock(dp, LK_EXCLUSIVE | LK_RETRY, td);
|
|
*retdirattr_retp = VOP_GETATTR(dp, retdirattrp,
|
|
ndp->ni_cnd.cn_cred, td);
|
|
VOP_UNLOCK(dp, 0, td);
|
|
}
|
|
|
|
if (pubflag) {
|
|
/*
|
|
* Oh joy. For WebNFS, handle those pesky '%' escapes,
|
|
* and the 'native path' indicator.
|
|
*/
|
|
cp = uma_zalloc(namei_zone, M_WAITOK);
|
|
fromcp = cnp->cn_pnbuf;
|
|
tocp = cp;
|
|
if ((unsigned char)*fromcp >= WEBNFS_SPECCHAR_START) {
|
|
switch ((unsigned char)*fromcp) {
|
|
case WEBNFS_NATIVE_CHAR:
|
|
/*
|
|
* 'Native' path for us is the same
|
|
* as a path according to the NFS spec,
|
|
* just skip the escape char.
|
|
*/
|
|
fromcp++;
|
|
break;
|
|
/*
|
|
* More may be added in the future, range 0x80-0xff
|
|
*/
|
|
default:
|
|
error = EIO;
|
|
uma_zfree(namei_zone, cp);
|
|
goto out;
|
|
}
|
|
}
|
|
/*
|
|
* Translate the '%' escapes, URL-style.
|
|
*/
|
|
while (*fromcp != '\0') {
|
|
if (*fromcp == WEBNFS_ESC_CHAR) {
|
|
if (fromcp[1] != '\0' && fromcp[2] != '\0') {
|
|
fromcp++;
|
|
*tocp++ = HEXSTRTOI(fromcp);
|
|
fromcp += 2;
|
|
continue;
|
|
} else {
|
|
error = ENOENT;
|
|
uma_zfree(namei_zone, cp);
|
|
goto out;
|
|
}
|
|
} else
|
|
*tocp++ = *fromcp++;
|
|
}
|
|
*tocp = '\0';
|
|
uma_zfree(namei_zone, cnp->cn_pnbuf);
|
|
cnp->cn_pnbuf = cp;
|
|
}
|
|
|
|
ndp->ni_pathlen = (tocp - cnp->cn_pnbuf) + 1;
|
|
ndp->ni_segflg = UIO_SYSSPACE;
|
|
|
|
if (pubflag) {
|
|
ndp->ni_rootdir = rootvnode;
|
|
ndp->ni_loopcnt = 0;
|
|
if (cnp->cn_pnbuf[0] == '/')
|
|
dp = rootvnode;
|
|
} else {
|
|
cnp->cn_flags |= NOCROSSMOUNT;
|
|
}
|
|
|
|
/*
|
|
* Initialize for scan, set ni_startdir and bump ref on dp again
|
|
* because lookup() will dereference ni_startdir.
|
|
*/
|
|
|
|
cnp->cn_thread = td;
|
|
VREF(dp);
|
|
ndp->ni_startdir = dp;
|
|
|
|
if (!lockleaf)
|
|
cnp->cn_flags |= LOCKLEAF;
|
|
for (;;) {
|
|
cnp->cn_nameptr = cnp->cn_pnbuf;
|
|
/*
|
|
* Call lookup() to do the real work. If an error occurs,
|
|
* ndp->ni_vp and ni_dvp are left uninitialized or NULL and
|
|
* we do not have to dereference anything before returning.
|
|
* In either case ni_startdir will be dereferenced and NULLed
|
|
* out.
|
|
*/
|
|
error = lookup(ndp);
|
|
if (error)
|
|
break;
|
|
|
|
/*
|
|
* Check for encountering a symbolic link. Trivial
|
|
* termination occurs if no symlink encountered.
|
|
* Note: zfree is safe because error is 0, so we will
|
|
* not zfree it again when we break.
|
|
*/
|
|
if ((cnp->cn_flags & ISSYMLINK) == 0) {
|
|
if (cnp->cn_flags & (SAVENAME | SAVESTART))
|
|
cnp->cn_flags |= HASBUF;
|
|
else
|
|
uma_zfree(namei_zone, cnp->cn_pnbuf);
|
|
if (ndp->ni_vp && !lockleaf)
|
|
VOP_UNLOCK(ndp->ni_vp, 0, td);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Validate symlink
|
|
*/
|
|
if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1)
|
|
VOP_UNLOCK(ndp->ni_dvp, 0, td);
|
|
if (!pubflag) {
|
|
error = EINVAL;
|
|
goto badlink2;
|
|
}
|
|
|
|
if (ndp->ni_loopcnt++ >= MAXSYMLINKS) {
|
|
error = ELOOP;
|
|
goto badlink2;
|
|
}
|
|
if (ndp->ni_pathlen > 1)
|
|
cp = uma_zalloc(namei_zone, M_WAITOK);
|
|
else
|
|
cp = cnp->cn_pnbuf;
|
|
aiov.iov_base = cp;
|
|
aiov.iov_len = MAXPATHLEN;
|
|
auio.uio_iov = &aiov;
|
|
auio.uio_iovcnt = 1;
|
|
auio.uio_offset = 0;
|
|
auio.uio_rw = UIO_READ;
|
|
auio.uio_segflg = UIO_SYSSPACE;
|
|
auio.uio_td = NULL;
|
|
auio.uio_resid = MAXPATHLEN;
|
|
error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred);
|
|
if (error) {
|
|
badlink1:
|
|
if (ndp->ni_pathlen > 1)
|
|
uma_zfree(namei_zone, cp);
|
|
badlink2:
|
|
vrele(ndp->ni_dvp);
|
|
vput(ndp->ni_vp);
|
|
break;
|
|
}
|
|
linklen = MAXPATHLEN - auio.uio_resid;
|
|
if (linklen == 0) {
|
|
error = ENOENT;
|
|
goto badlink1;
|
|
}
|
|
if (linklen + ndp->ni_pathlen >= MAXPATHLEN) {
|
|
error = ENAMETOOLONG;
|
|
goto badlink1;
|
|
}
|
|
|
|
/*
|
|
* Adjust or replace path
|
|
*/
|
|
if (ndp->ni_pathlen > 1) {
|
|
bcopy(ndp->ni_next, cp + linklen, ndp->ni_pathlen);
|
|
uma_zfree(namei_zone, cnp->cn_pnbuf);
|
|
cnp->cn_pnbuf = cp;
|
|
} else
|
|
cnp->cn_pnbuf[linklen] = '\0';
|
|
ndp->ni_pathlen += linklen;
|
|
|
|
/*
|
|
* Cleanup refs for next loop and check if root directory
|
|
* should replace current directory. Normally ni_dvp
|
|
* becomes the new base directory and is cleaned up when
|
|
* we loop. Explicitly null pointers after invalidation
|
|
* to clarify operation.
|
|
*/
|
|
vput(ndp->ni_vp);
|
|
ndp->ni_vp = NULL;
|
|
|
|
if (cnp->cn_pnbuf[0] == '/') {
|
|
vrele(ndp->ni_dvp);
|
|
ndp->ni_dvp = ndp->ni_rootdir;
|
|
VREF(ndp->ni_dvp);
|
|
}
|
|
ndp->ni_startdir = ndp->ni_dvp;
|
|
ndp->ni_dvp = NULL;
|
|
}
|
|
if (!lockleaf)
|
|
cnp->cn_flags &= ~LOCKLEAF;
|
|
|
|
/*
|
|
* nfs_namei() guarentees that fields will not contain garbage
|
|
* whether an error occurs or not. This allows the caller to track
|
|
* cleanup state trivially.
|
|
*/
|
|
out:
|
|
if (error) {
|
|
uma_zfree(namei_zone, cnp->cn_pnbuf);
|
|
ndp->ni_vp = NULL;
|
|
ndp->ni_dvp = NULL;
|
|
ndp->ni_startdir = NULL;
|
|
cnp->cn_flags &= ~HASBUF;
|
|
} else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) {
|
|
ndp->ni_dvp = NULL;
|
|
}
|
|
mtx_unlock(&Giant); /* VFS */
|
|
NFSD_LOCK();
|
|
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(struct mbuf *mp, int len, int nul)
|
|
{
|
|
struct mbuf *m;
|
|
int count, i;
|
|
char *cp;
|
|
|
|
NFSD_LOCK_DONTCARE();
|
|
|
|
/*
|
|
* 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 == NULL)
|
|
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(struct nfsrv_descript *nfsd, int before_ret,
|
|
struct vattr *before_vap, int after_ret, struct vattr *after_vap,
|
|
struct mbuf **mbp, char **bposp)
|
|
{
|
|
struct mbuf *mb = *mbp;
|
|
char *bpos = *bposp;
|
|
u_int32_t *tl;
|
|
|
|
if (before_ret) {
|
|
tl = nfsm_build(u_int32_t *, NFSX_UNSIGNED);
|
|
*tl = nfsrv_nfs_false;
|
|
} else {
|
|
tl = nfsm_build(u_int32_t *, 7 * NFSX_UNSIGNED);
|
|
*tl++ = nfsrv_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(struct nfsrv_descript *nfsd, int after_ret,
|
|
struct vattr *after_vap, struct mbuf **mbp, char **bposp)
|
|
{
|
|
struct mbuf *mb = *mbp;
|
|
char *bpos = *bposp;
|
|
u_int32_t *tl;
|
|
struct nfs_fattr *fp;
|
|
|
|
if (after_ret) {
|
|
tl = nfsm_build(u_int32_t *, NFSX_UNSIGNED);
|
|
*tl = nfsrv_nfs_false;
|
|
} else {
|
|
tl = nfsm_build(u_int32_t *, NFSX_UNSIGNED + NFSX_V3FATTR);
|
|
*tl++ = nfsrv_nfs_true;
|
|
fp = (struct nfs_fattr *)tl;
|
|
nfsm_srvfattr(nfsd, after_vap, fp);
|
|
}
|
|
*mbp = mb;
|
|
*bposp = bpos;
|
|
}
|
|
|
|
void
|
|
nfsm_srvfattr(struct nfsrv_descript *nfsd, struct vattr *vap,
|
|
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(umajor(vap->va_rdev));
|
|
fp->fa3_rdev.specdata2 = txdr_unsigned(uminor(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(fhandle_t *fhp, int lockflag, struct vnode **vpp,
|
|
struct ucred *cred, struct nfssvc_sock *slp, struct sockaddr *nam,
|
|
int *rdonlyp, int pubflag)
|
|
{
|
|
struct thread *td = curthread; /* XXX */
|
|
struct mount *mp;
|
|
int i;
|
|
struct ucred *credanon;
|
|
int error, exflags;
|
|
#ifdef MNT_EXNORESPORT /* XXX needs mountd and /etc/exports help yet */
|
|
struct sockaddr_int *saddr;
|
|
#endif
|
|
|
|
NFSD_LOCK_ASSERT();
|
|
|
|
*vpp = NULL;
|
|
|
|
if (nfs_ispublicfh(fhp)) {
|
|
if (!pubflag || !nfs_pub.np_valid)
|
|
return (ESTALE);
|
|
fhp = &nfs_pub.np_handle;
|
|
}
|
|
|
|
mp = vfs_getvfs(&fhp->fh_fsid);
|
|
if (!mp)
|
|
return (ESTALE);
|
|
NFSD_UNLOCK();
|
|
mtx_lock(&Giant); /* VFS */
|
|
error = VFS_CHECKEXP(mp, nam, &exflags, &credanon);
|
|
if (error)
|
|
goto out;
|
|
error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp);
|
|
if (error)
|
|
goto out;
|
|
#ifdef MNT_EXNORESPORT
|
|
if (!(exflags & (MNT_EXNORESPORT|MNT_EXPUBLIC))) {
|
|
saddr = (struct sockaddr_in *)nam;
|
|
if ((saddr->sin_family == AF_INET ||
|
|
saddr->sin_family == AF_INET6) &&
|
|
/* same code for INET and INET6: sin*_port at same offet */
|
|
ntohs(saddr->sin_port) >= IPPORT_RESERVED) {
|
|
vput(*vpp);
|
|
*vpp = NULL;
|
|
error = NFSERR_AUTHERR | AUTH_TOOWEAK;
|
|
}
|
|
}
|
|
#endif
|
|
/*
|
|
* Check/setup credentials.
|
|
*/
|
|
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, td);
|
|
out:
|
|
mtx_unlock(&Giant); /* VFS */
|
|
NFSD_LOCK();
|
|
return (error);
|
|
}
|
|
|
|
|
|
/*
|
|
* WebNFS: check if a filehandle is a public filehandle. For v3, this
|
|
* means a length of 0, for v2 it means all zeroes. nfsm_srvmtofh has
|
|
* transformed this to all zeroes in both cases, so check for it.
|
|
*/
|
|
int
|
|
nfs_ispublicfh(fhandle_t *fhp)
|
|
{
|
|
char *cp = (char *)fhp;
|
|
int i;
|
|
|
|
NFSD_LOCK_DONTCARE();
|
|
|
|
for (i = 0; i < NFSX_V3FH; i++)
|
|
if (*cp++ != 0)
|
|
return (FALSE);
|
|
return (TRUE);
|
|
}
|
|
|
|
/*
|
|
* 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(int family, union nethostaddr *haddr, struct sockaddr *nam)
|
|
{
|
|
struct sockaddr_in *inetaddr;
|
|
|
|
NFSD_LOCK_DONTCARE();
|
|
|
|
switch (family) {
|
|
case AF_INET:
|
|
inetaddr = (struct sockaddr_in *)nam;
|
|
if (inetaddr->sin_family == AF_INET &&
|
|
inetaddr->sin_addr.s_addr == haddr->had_inetaddr)
|
|
return (1);
|
|
break;
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
{
|
|
register struct sockaddr_in6 *inet6addr1, *inet6addr2;
|
|
|
|
inet6addr1 = (struct sockaddr_in6 *)nam;
|
|
inet6addr2 = (struct sockaddr_in6 *)haddr->had_nam;
|
|
/* XXX - should test sin6_scope_id ? */
|
|
if (inet6addr1->sin6_family == AF_INET6 &&
|
|
IN6_ARE_ADDR_EQUAL(&inet6addr1->sin6_addr,
|
|
&inet6addr2->sin6_addr))
|
|
return (1);
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
break;
|
|
};
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Map errnos to NFS error numbers. For Version 3 also filter out error
|
|
* numbers not specified for the associated procedure.
|
|
*/
|
|
int
|
|
nfsrv_errmap(struct nfsrv_descript *nd, int err)
|
|
{
|
|
const short *defaulterrp, *errp;
|
|
int e;
|
|
|
|
NFSD_LOCK_DONTCARE();
|
|
|
|
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);
|
|
}
|
|
e = 0;
|
|
if (err <= ELAST)
|
|
e = nfsrv_v2errmap[err - 1];
|
|
if (e != 0)
|
|
return (e);
|
|
return (NFSERR_IO);
|
|
}
|
|
|
|
/*
|
|
* Sort the group list in increasing numerical order.
|
|
* (Insertion sort by Chris Torek, who was grossed out by the bubble sort
|
|
* that used to be here.)
|
|
*/
|
|
void
|
|
nfsrvw_sort(gid_t *list, int num)
|
|
{
|
|
int i, j;
|
|
gid_t v;
|
|
|
|
NFSD_LOCK_DONTCARE();
|
|
|
|
/* Insertion sort. */
|
|
for (i = 1; i < num; i++) {
|
|
v = list[i];
|
|
/* find correct slot for value v, moving others up */
|
|
for (j = i; --j >= 0 && v < list[j];)
|
|
list[j + 1] = list[j];
|
|
list[j + 1] = v;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* copy credentials making sure that the result can be compared with bcmp().
|
|
*/
|
|
void
|
|
nfsrv_setcred(struct ucred *incred, struct ucred *outcred)
|
|
{
|
|
int i;
|
|
|
|
NFSD_LOCK_DONTCARE();
|
|
|
|
bzero((caddr_t)outcred, sizeof (struct ucred));
|
|
outcred->cr_ref = 1;
|
|
outcred->cr_uid = incred->cr_uid;
|
|
outcred->cr_ngroups = incred->cr_ngroups;
|
|
for (i = 0; i < incred->cr_ngroups; i++)
|
|
outcred->cr_groups[i] = incred->cr_groups[i];
|
|
nfsrvw_sort(outcred->cr_groups, outcred->cr_ngroups);
|
|
}
|
|
|
|
/*
|
|
* Helper functions for macros.
|
|
*/
|
|
|
|
void
|
|
nfsm_srvfhtom_xx(fhandle_t *f, int v3, struct mbuf **mb, caddr_t *bpos)
|
|
{
|
|
u_int32_t *tl;
|
|
|
|
NFSD_LOCK_DONTCARE();
|
|
|
|
if (v3) {
|
|
tl = nfsm_build_xx(NFSX_UNSIGNED + NFSX_V3FH, mb, bpos);
|
|
*tl++ = txdr_unsigned(NFSX_V3FH);
|
|
bcopy(f, tl, NFSX_V3FH);
|
|
} else {
|
|
tl = nfsm_build_xx(NFSX_V2FH, mb, bpos);
|
|
bcopy(f, tl, NFSX_V2FH);
|
|
}
|
|
}
|
|
|
|
void
|
|
nfsm_srvpostop_fh_xx(fhandle_t *f, struct mbuf **mb, caddr_t *bpos)
|
|
{
|
|
u_int32_t *tl;
|
|
|
|
tl = nfsm_build_xx(2 * NFSX_UNSIGNED + NFSX_V3FH, mb, bpos);
|
|
*tl++ = nfsrv_nfs_true;
|
|
*tl++ = txdr_unsigned(NFSX_V3FH);
|
|
bcopy(f, tl, NFSX_V3FH);
|
|
}
|
|
|
|
int
|
|
nfsm_srvstrsiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos)
|
|
{
|
|
u_int32_t *tl;
|
|
|
|
NFSD_LOCK_DONTCARE();
|
|
|
|
tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
*s = fxdr_unsigned(int32_t, *tl);
|
|
if (*s > m || *s <= 0)
|
|
return EBADRPC;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
nfsm_srvnamesiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos)
|
|
{
|
|
u_int32_t *tl;
|
|
|
|
NFSD_LOCK_DONTCARE();
|
|
|
|
tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
*s = fxdr_unsigned(int32_t, *tl);
|
|
if (*s > m)
|
|
return NFSERR_NAMETOL;
|
|
if (*s <= 0)
|
|
return EBADRPC;
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
nfsm_clget_xx(u_int32_t **tl, struct mbuf *mb, struct mbuf **mp,
|
|
char **bp, char **be, caddr_t bpos, int droplock)
|
|
{
|
|
struct mbuf *nmp;
|
|
|
|
NFSD_LOCK_DONTCARE();
|
|
|
|
if (droplock)
|
|
NFSD_LOCK_ASSERT();
|
|
else
|
|
NFSD_UNLOCK_ASSERT();
|
|
|
|
if (*bp >= *be) {
|
|
if (*mp == mb)
|
|
(*mp)->m_len += *bp - bpos;
|
|
if (droplock)
|
|
NFSD_UNLOCK();
|
|
MGET(nmp, M_TRYWAIT, MT_DATA);
|
|
MCLGET(nmp, M_TRYWAIT);
|
|
if (droplock)
|
|
NFSD_LOCK();
|
|
nmp->m_len = NFSMSIZ(nmp);
|
|
(*mp)->m_next = nmp;
|
|
*mp = nmp;
|
|
*bp = mtod(*mp, caddr_t);
|
|
*be = *bp + (*mp)->m_len;
|
|
}
|
|
*tl = (u_int32_t *)*bp;
|
|
}
|
|
|
|
int
|
|
nfsm_srvmtofh_xx(fhandle_t *f, struct nfsrv_descript *nfsd, struct mbuf **md,
|
|
caddr_t *dpos)
|
|
{
|
|
u_int32_t *tl;
|
|
int fhlen;
|
|
|
|
NFSD_LOCK_DONTCARE();
|
|
|
|
if (nfsd->nd_flag & ND_NFSV3) {
|
|
tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
fhlen = fxdr_unsigned(int, *tl);
|
|
if (fhlen != 0 && fhlen != NFSX_V3FH)
|
|
return EBADRPC;
|
|
} else {
|
|
fhlen = NFSX_V2FH;
|
|
}
|
|
if (fhlen != 0) {
|
|
tl = nfsm_dissect_xx_nonblock(fhlen, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
bcopy((caddr_t)tl, (caddr_t)(f), fhlen);
|
|
} else {
|
|
bzero((caddr_t)(f), NFSX_V3FH);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
nfsm_srvsattr_xx(struct vattr *a, struct mbuf **md, caddr_t *dpos)
|
|
{
|
|
u_int32_t *tl;
|
|
|
|
NFSD_LOCK_DONTCARE();
|
|
|
|
tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
if (*tl == nfsrv_nfs_true) {
|
|
tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
(a)->va_mode = nfstov_mode(*tl);
|
|
}
|
|
tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
if (*tl == nfsrv_nfs_true) {
|
|
tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
(a)->va_uid = fxdr_unsigned(uid_t, *tl);
|
|
}
|
|
tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
if (*tl == nfsrv_nfs_true) {
|
|
tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
(a)->va_gid = fxdr_unsigned(gid_t, *tl);
|
|
}
|
|
tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
if (*tl == nfsrv_nfs_true) {
|
|
tl = nfsm_dissect_xx_nonblock(2 * NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
(a)->va_size = fxdr_hyper(tl);
|
|
}
|
|
tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
switch (fxdr_unsigned(int, *tl)) {
|
|
case NFSV3SATTRTIME_TOCLIENT:
|
|
tl = nfsm_dissect_xx_nonblock(2 * NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
fxdr_nfsv3time(tl, &(a)->va_atime);
|
|
break;
|
|
case NFSV3SATTRTIME_TOSERVER:
|
|
getnanotime(&(a)->va_atime);
|
|
break;
|
|
}
|
|
tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
switch (fxdr_unsigned(int, *tl)) {
|
|
case NFSV3SATTRTIME_TOCLIENT:
|
|
tl = nfsm_dissect_xx_nonblock(2 * NFSX_UNSIGNED, md, dpos);
|
|
if (tl == NULL)
|
|
return EBADRPC;
|
|
fxdr_nfsv3time(tl, &(a)->va_mtime);
|
|
break;
|
|
case NFSV3SATTRTIME_TOSERVER:
|
|
getnanotime(&(a)->va_mtime);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|