2262 lines
52 KiB
C
2262 lines
52 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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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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* $FreeBSD$
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*/
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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 <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/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/sysent.h>
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#include <sys/syscall.h>
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#include <sys/conf.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/vm_zone.h>
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#include <nfs/rpcv2.h>
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#include <nfs/nfsproto.h>
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#include <nfs/nfs.h>
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#include <nfs/nfsnode.h>
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#include <nfs/xdr_subs.h>
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#include <nfs/nfsm_subs.h>
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#include <nfs/nfsmount.h>
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#include <nfs/nqnfs.h>
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#include <nfs/nfsrtt.h>
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#include <netinet/in.h>
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#ifdef ISO
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#include <netiso/iso.h>
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#endif
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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 nfs_xdrneg1;
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u_int32_t rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr,
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rpc_mismatch, rpc_auth_unix, rpc_msgaccepted,
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rpc_auth_kerb;
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u_int32_t nfs_prog, nqnfs_prog, nfs_true, nfs_false;
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/* And other global data */
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static u_int32_t nfs_xid = 0;
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static enum vtype nv2tov_type[8]= {
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VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON
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};
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enum vtype nv3tov_type[8]= {
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VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO
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};
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int nfs_ticks;
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int nfs_pbuf_freecnt = -1; /* start out unlimited */
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struct nfs_reqq nfs_reqq;
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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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struct nfs_bufq nfs_bufq;
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struct nqtimerhead nqtimerhead;
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struct nqfhhashhead *nqfhhashtbl;
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u_long nqfhhash;
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static void (*nfs_prev_lease_updatetime) __P((int));
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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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#ifndef NFS_NOSERVER
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static vop_t *nfs_prev_vop_lease_check;
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static int nfs_prev_getfh_sy_narg;
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static sy_call_t *nfs_prev_getfh_sy_call;
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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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int 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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NFSPROC_NOOP,
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NFSPROC_NOOP,
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NFSPROC_NOOP
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};
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#endif /* NFS_NOSERVER */
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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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int nfsv2_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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NFSV2PROC_NOOP,
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NFSV2PROC_NOOP,
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NFSV2PROC_NOOP,
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};
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#ifndef NFS_NOSERVER
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/*
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* Maps errno values to nfs error numbers.
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* Use NFSERR_IO as the catch all for ones not specifically defined in
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* RFC 1094.
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*/
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static u_char nfsrv_v2errmap[ELAST] = {
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NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO,
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NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
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NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO,
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NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR,
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NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
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NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS,
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NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
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NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
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NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
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NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
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NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
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NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
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NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO,
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NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE,
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NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
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NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
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NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
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NFSERR_IO /* << Last is 86 */
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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 short nfsv3err_null[] = {
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0,
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0,
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};
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static 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 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 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 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 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 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 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 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 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 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 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 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 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 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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|
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static 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,
|
|
NFSERR_NOTSUPP,
|
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NFSERR_SERVERFAULT,
|
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0,
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};
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|
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static short nfsv3err_readdir[] = {
|
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NFSERR_IO,
|
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NFSERR_IO,
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NFSERR_ACCES,
|
|
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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|
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static 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,
|
|
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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|
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static short nfsv3err_fsstat[] = {
|
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NFSERR_IO,
|
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NFSERR_IO,
|
|
NFSERR_STALE,
|
|
NFSERR_BADHANDLE,
|
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NFSERR_SERVERFAULT,
|
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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,
|
|
};
|
|
|
|
#endif /* NFS_NOSERVER */
|
|
|
|
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;
|
|
|
|
struct getfh_args;
|
|
extern int getfh(struct proc *, struct getfh_args *, int *);
|
|
struct nfssvc_args;
|
|
extern int nfssvc(struct proc *, struct nfssvc_args *, int *);
|
|
|
|
LIST_HEAD(nfsnodehashhead, nfsnode);
|
|
|
|
int nfs_webnamei __P((struct nameidata *, struct vnode *, struct proc *));
|
|
|
|
u_quad_t
|
|
nfs_curusec()
|
|
{
|
|
struct timeval tv;
|
|
|
|
getmicrotime(&tv);
|
|
return ((u_quad_t)tv.tv_sec * 1000000 + (u_quad_t)tv.tv_usec);
|
|
}
|
|
|
|
/*
|
|
* 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_int32_t *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_int32_t *, 2*NFSX_UNSIGNED);
|
|
*tl++ = txdr_unsigned(nqflag);
|
|
*tl = txdr_unsigned(nmp->nm_leaseterm);
|
|
} else {
|
|
nfsm_build(tl, u_int32_t *, 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_int32_t *xidp;
|
|
{
|
|
register struct mbuf *mb;
|
|
register u_int32_t *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_int32_t *, 8 * NFSX_UNSIGNED);
|
|
|
|
/* Get a pretty random xid to start with */
|
|
if (!nfs_xid)
|
|
nfs_xid = random();
|
|
/*
|
|
* Skip zero xid if it should ever happen.
|
|
*/
|
|
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_int32_t *, 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_int32_t *, 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.
|
|
* NOTE: can ony handle iovcnt == 1
|
|
*/
|
|
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;
|
|
|
|
#ifdef DIAGNOSTIC
|
|
if (uiop->uio_iovcnt != 1)
|
|
panic("nfsm_uiotombuf: iovcnt != 1");
|
|
#endif
|
|
|
|
if (siz > MLEN) /* or should it >= MCLBYTES ?? */
|
|
clflg = 1;
|
|
else
|
|
clflg = 0;
|
|
rem = nfsm_rndup(siz)-siz;
|
|
mp = mp2 = *mq;
|
|
while (siz > 0) {
|
|
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;
|
|
}
|
|
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;
|
|
const char *cp;
|
|
long siz;
|
|
{
|
|
register struct mbuf *m1 = NULL, *m2;
|
|
long left, xfer, len, tlen;
|
|
u_int32_t *tl;
|
|
int putsize;
|
|
|
|
putsize = 1;
|
|
m2 = *mb;
|
|
left = M_TRAILINGSPACE(m2);
|
|
if (left > 0) {
|
|
tl = ((u_int32_t *)(*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_int32_t *);
|
|
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;
|
|
|
|
nfsmount_zone = zinit("NFSMOUNT", sizeof(struct nfsmount), 0, 0, 1);
|
|
|
|
/*
|
|
* Check to see if major data structures haven't bloated.
|
|
*/
|
|
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;
|
|
nfs_iodmount[i] = (struct nfsmount *)0;
|
|
}
|
|
nfs_nhinit(); /* Init the nfsnode table */
|
|
#ifndef NFS_NOSERVER
|
|
nfsrv_init(0); /* Init server data structures */
|
|
nfsrv_initcache(); /* Init the server request cache */
|
|
#endif
|
|
|
|
/*
|
|
* 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);
|
|
|
|
/*
|
|
* Set up lease_check and lease_updatetime so that other parts
|
|
* of the system can call us, if we are loadable.
|
|
*/
|
|
#ifndef NFS_NOSERVER
|
|
nfs_prev_vop_lease_check = default_vnodeop_p[VOFFSET(vop_lease)];
|
|
default_vnodeop_p[VOFFSET(vop_lease)] = (vop_t *)nqnfs_vop_lease_check;
|
|
#endif
|
|
nfs_prev_lease_updatetime = lease_updatetime;
|
|
lease_updatetime = nfs_lease_updatetime;
|
|
nfs_prev_nfssvc_sy_narg = sysent[SYS_nfssvc].sy_narg;
|
|
sysent[SYS_nfssvc].sy_narg = 2;
|
|
nfs_prev_nfssvc_sy_call = sysent[SYS_nfssvc].sy_call;
|
|
sysent[SYS_nfssvc].sy_call = (sy_call_t *)nfssvc;
|
|
#ifndef NFS_NOSERVER
|
|
nfs_prev_getfh_sy_narg = sysent[SYS_getfh].sy_narg;
|
|
sysent[SYS_getfh].sy_narg = 2;
|
|
nfs_prev_getfh_sy_call = sysent[SYS_getfh].sy_call;
|
|
sysent[SYS_getfh].sy_call = (sy_call_t *)getfh;
|
|
#endif
|
|
|
|
nfs_pbuf_freecnt = nswbuf / 2 + 1;
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
nfs_uninit(vfsp)
|
|
struct vfsconf *vfsp;
|
|
{
|
|
|
|
untimeout(nfs_timer, (void *)NULL, nfs_timer_handle);
|
|
nfs_mount_type = -1;
|
|
#ifndef NFS_NOSERVER
|
|
default_vnodeop_p[VOFFSET(vop_lease)] = nfs_prev_vop_lease_check;
|
|
#endif
|
|
lease_updatetime = nfs_prev_lease_updatetime;
|
|
sysent[SYS_nfssvc].sy_narg = nfs_prev_nfssvc_sy_narg;
|
|
sysent[SYS_nfssvc].sy_call = nfs_prev_nfssvc_sy_call;
|
|
#ifndef NFS_NOSERVER
|
|
sysent[SYS_getfh].sy_narg = nfs_prev_getfh_sy_narg;
|
|
sysent[SYS_getfh].sy_call = nfs_prev_getfh_sy_call;
|
|
#endif
|
|
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;
|
|
register struct nfsnode *np;
|
|
register int32_t t1;
|
|
caddr_t cp2;
|
|
int error = 0, rdev;
|
|
struct mbuf *md;
|
|
enum vtype vtyp;
|
|
u_short vmode;
|
|
struct timespec mtime;
|
|
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)) != 0)
|
|
return (error);
|
|
fp = (struct nfs_fattr *)cp2;
|
|
if (v3) {
|
|
vtyp = nfsv3tov_type(fp->fa_type);
|
|
vmode = fxdr_unsigned(u_short, fp->fa_mode);
|
|
rdev = makeudev(fxdr_unsigned(int, fp->fa3_rdev.specdata1),
|
|
fxdr_unsigned(int, 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);
|
|
/*
|
|
* XXX
|
|
*
|
|
* The duplicate information returned in fa_type and fa_mode
|
|
* is an ambiguity in the NFS version 2 protocol.
|
|
*
|
|
* VREG should be taken literally as a regular file. If a
|
|
* server intents to return some type information differently
|
|
* in the upper bits of the mode field (e.g. for sockets, or
|
|
* FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we
|
|
* leave the examination of the mode bits even in the VREG
|
|
* case to avoid breakage for bogus servers, but we make sure
|
|
* that there are actually type bits set in the upper part of
|
|
* fa_mode (and failing that, trust the va_type field).
|
|
*
|
|
* NFSv3 cleared the issue, and requires fa_mode to not
|
|
* contain any type information (while also introduing sockets
|
|
* and FIFOs for fa_type).
|
|
*/
|
|
if (vtyp == VNON || (vtyp == VREG && (vmode & S_IFMT) != 0))
|
|
vtyp = IFTOVT(vmode);
|
|
rdev = fxdr_unsigned(int32_t, 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 != vtyp) {
|
|
vp->v_type = vtyp;
|
|
if (vp->v_type == VFIFO) {
|
|
vp->v_op = fifo_nfsv2nodeop_p;
|
|
}
|
|
if (vp->v_type == VCHR || vp->v_type == VBLK) {
|
|
vp->v_op = spec_nfsv2nodeop_p;
|
|
addaliasu(vp, rdev);
|
|
}
|
|
np->n_mtime = mtime.tv_sec;
|
|
}
|
|
vap = &np->n_vattr;
|
|
vap->va_type = vtyp;
|
|
vap->va_mode = (vmode & 07777);
|
|
vap->va_rdev = 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);
|
|
vap->va_size = fxdr_hyper(&fp->fa3_size);
|
|
vap->va_blocksize = NFS_FABLKSIZE;
|
|
vap->va_bytes = fxdr_hyper(&fp->fa3_used);
|
|
vap->va_fileid = fxdr_unsigned(int32_t,
|
|
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_int32_t, fp->fa2_size);
|
|
vap->va_blocksize = fxdr_unsigned(int32_t, fp->fa2_blocksize);
|
|
vap->va_bytes = (u_quad_t)fxdr_unsigned(int32_t, fp->fa2_blocks)
|
|
* NFS_FABLKSIZE;
|
|
vap->va_fileid = fxdr_unsigned(int32_t, fp->fa2_fileid);
|
|
fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime);
|
|
vap->va_flags = 0;
|
|
vap->va_ctime.tv_sec = fxdr_unsigned(u_int32_t,
|
|
fp->fa2_ctime.nfsv2_sec);
|
|
vap->va_ctime.tv_nsec = 0;
|
|
vap->va_gen = fxdr_unsigned(u_int32_t,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, np->n_size);
|
|
} else
|
|
np->n_size = vap->va_size;
|
|
}
|
|
np->n_attrstamp = time_second;
|
|
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);
|
|
}
|
|
|
|
#ifdef NFS_ACDEBUG
|
|
#include <sys/sysctl.h>
|
|
SYSCTL_DECL(_vfs_nfs);
|
|
static int nfs_acdebug;
|
|
SYSCTL_INT(_vfs_nfs, OID_AUTO, acdebug, CTLFLAG_RW, &nfs_acdebug, 0, "");
|
|
#endif
|
|
|
|
/*
|
|
* 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;
|
|
register struct vattr *vap;
|
|
struct nfsmount *nmp;
|
|
int timeo;
|
|
|
|
np = VTONFS(vp);
|
|
vap = &np->n_vattr;
|
|
nmp = VFSTONFS(vp->v_mount);
|
|
/* XXX n_mtime doesn't seem to be updated on a miss-and-reload */
|
|
timeo = (time_second - np->n_mtime) / 10;
|
|
|
|
#ifdef NFS_ACDEBUG
|
|
if (nfs_acdebug>1)
|
|
printf("nfs_getattrcache: initial timeo = %d\n", timeo);
|
|
#endif
|
|
|
|
if (vap->va_type == VDIR) {
|
|
if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acdirmin)
|
|
timeo = nmp->nm_acdirmin;
|
|
else if (timeo > nmp->nm_acdirmax)
|
|
timeo = nmp->nm_acdirmax;
|
|
} else {
|
|
if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acregmin)
|
|
timeo = nmp->nm_acregmin;
|
|
else if (timeo > nmp->nm_acregmax)
|
|
timeo = nmp->nm_acregmax;
|
|
}
|
|
|
|
#ifdef NFS_ACDEBUG
|
|
if (nfs_acdebug > 2)
|
|
printf("acregmin %d; acregmax %d; acdirmin %d; acdirmax %d\n",
|
|
nmp->nm_acregmin, nmp->nm_acregmax,
|
|
nmp->nm_acdirmin, nmp->nm_acdirmax);
|
|
|
|
if (nfs_acdebug)
|
|
printf("nfs_getattrcache: age = %d; final timeo = %d\n",
|
|
(time_second - np->n_attrstamp), timeo);
|
|
#endif
|
|
|
|
if ((time_second - np->n_attrstamp) >= timeo) {
|
|
nfsstats.attrcache_misses++;
|
|
return (ENOENT);
|
|
}
|
|
nfsstats.attrcache_hits++;
|
|
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, 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);
|
|
}
|
|
|
|
#ifndef NFS_NOSERVER
|
|
/*
|
|
* 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(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag, pubflag)
|
|
register struct nameidata *ndp;
|
|
fhandle_t *fhp;
|
|
int len;
|
|
struct nfssvc_sock *slp;
|
|
struct sockaddr *nam;
|
|
struct mbuf **mdp;
|
|
caddr_t *dposp;
|
|
struct vnode **retdirp;
|
|
struct proc *p;
|
|
int kerbflag, pubflag;
|
|
{
|
|
register int i, rem;
|
|
register struct mbuf *md;
|
|
register char *fromcp, *tocp, *cp;
|
|
struct iovec aiov;
|
|
struct uio auio;
|
|
struct vnode *dp;
|
|
int error, rdonly, linklen;
|
|
struct componentname *cnp = &ndp->ni_cnd;
|
|
|
|
*retdirp = (struct vnode *)0;
|
|
cnp->cn_pnbuf = zalloc(namei_zone);
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp,
|
|
nam, &rdonly, kerbflag, pubflag);
|
|
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 (pubflag) {
|
|
/*
|
|
* Oh joy. For WebNFS, handle those pesky '%' escapes,
|
|
* and the 'native path' indicator.
|
|
*/
|
|
cp = zalloc(namei_zone);
|
|
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;
|
|
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;
|
|
zfree(namei_zone, cp);
|
|
goto out;
|
|
}
|
|
} else
|
|
*tocp++ = *fromcp++;
|
|
}
|
|
*tocp = '\0';
|
|
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
|
|
* becuase lookup() will dereference ni_startdir.
|
|
*/
|
|
|
|
cnp->cn_proc = p;
|
|
VREF(dp);
|
|
ndp->ni_startdir = dp;
|
|
|
|
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) {
|
|
nfsrv_object_create(ndp->ni_vp);
|
|
if (cnp->cn_flags & (SAVENAME | SAVESTART))
|
|
cnp->cn_flags |= HASBUF;
|
|
else
|
|
zfree(namei_zone, cnp->cn_pnbuf);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Validate symlink
|
|
*/
|
|
if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1)
|
|
VOP_UNLOCK(ndp->ni_dvp, 0, p);
|
|
if (!pubflag) {
|
|
error = EINVAL;
|
|
goto badlink2;
|
|
}
|
|
|
|
if (ndp->ni_loopcnt++ >= MAXSYMLINKS) {
|
|
error = ELOOP;
|
|
goto badlink2;
|
|
}
|
|
if (ndp->ni_pathlen > 1)
|
|
cp = zalloc(namei_zone);
|
|
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_procp = (struct proc *)0;
|
|
auio.uio_resid = MAXPATHLEN;
|
|
error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred);
|
|
if (error) {
|
|
badlink1:
|
|
if (ndp->ni_pathlen > 1)
|
|
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);
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* 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) {
|
|
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;
|
|
}
|
|
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_int32_t *tl;
|
|
|
|
if (before_ret) {
|
|
nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
*tl = nfs_false;
|
|
} else {
|
|
nfsm_build(tl, u_int32_t *, 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_int32_t *tl;
|
|
register struct nfs_fattr *fp;
|
|
|
|
if (after_ret) {
|
|
nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
*tl = nfs_false;
|
|
} else {
|
|
nfsm_build(tl, u_int32_t *, 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(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(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag, pubflag)
|
|
fhandle_t *fhp;
|
|
int lockflag;
|
|
struct vnode **vpp;
|
|
struct ucred *cred;
|
|
struct nfssvc_sock *slp;
|
|
struct sockaddr *nam;
|
|
int *rdonlyp;
|
|
int kerbflag;
|
|
int pubflag;
|
|
{
|
|
struct proc *p = curproc; /* XXX */
|
|
register struct mount *mp;
|
|
register int i;
|
|
struct ucred *credanon;
|
|
int error, exflags;
|
|
#ifdef MNT_EXNORESPORT /* XXX needs mountd and /etc/exports help yet */
|
|
struct sockaddr_int *saddr;
|
|
#endif
|
|
|
|
*vpp = (struct vnode *)0;
|
|
|
|
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);
|
|
error = VFS_CHECKEXP(mp, nam, &exflags, &credanon);
|
|
if (error)
|
|
return (error);
|
|
error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp);
|
|
if (error)
|
|
return (error);
|
|
#ifdef MNT_EXNORESPORT
|
|
if (!(exflags & (MNT_EXNORESPORT|MNT_EXPUBLIC))) {
|
|
saddr = (struct sockaddr_in *)nam;
|
|
if (saddr->sin_family == AF_INET &&
|
|
ntohs(saddr->sin_port) >= IPPORT_RESERVED) {
|
|
vput(*vpp);
|
|
return (NFSERR_AUTHERR | AUTH_TOOWEAK);
|
|
}
|
|
}
|
|
#endif
|
|
/*
|
|
* 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;
|
|
|
|
nfsrv_object_create(*vpp);
|
|
|
|
if (!lockflag)
|
|
VOP_UNLOCK(*vpp, 0, p);
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* 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(fhp)
|
|
fhandle_t *fhp;
|
|
{
|
|
char *cp = (char *)fhp;
|
|
int i;
|
|
|
|
for (i = 0; i < NFSX_V3FH; i++)
|
|
if (*cp++ != 0)
|
|
return (FALSE);
|
|
return (TRUE);
|
|
}
|
|
|
|
#endif /* NFS_NOSERVER */
|
|
/*
|
|
* 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 sockaddr *nam;
|
|
{
|
|
register struct sockaddr_in *inetaddr;
|
|
|
|
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 ISO
|
|
case AF_ISO:
|
|
{
|
|
register struct sockaddr_iso *isoaddr1, *isoaddr2;
|
|
|
|
isoaddr1 = (struct sockaddr_iso *)nam;
|
|
isoaddr2 = (struct sockaddr_iso *)haddr->had_nam;
|
|
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 = (uoff_t)off / NFS_DIRBLKSIZ;
|
|
if (pos == 0 || off < 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 = TAILQ_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) {
|
|
nbp = TAILQ_NEXT(bp, b_vnbufs);
|
|
if (BUF_REFCNT(bp) == 0 &&
|
|
(bp->b_flags & (B_DELWRI | B_NEEDCOMMIT))
|
|
== (B_DELWRI | B_NEEDCOMMIT))
|
|
bp->b_flags &= ~B_NEEDCOMMIT;
|
|
}
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
#ifndef NFS_NOSERVER
|
|
/*
|
|
* 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);
|
|
}
|
|
|
|
int
|
|
nfsrv_object_create(vp)
|
|
struct vnode *vp;
|
|
{
|
|
|
|
if (vp == NULL || vp->v_type != VREG)
|
|
return (1);
|
|
return (vfs_object_create(vp, curproc,
|
|
curproc ? curproc->p_ucred : NULL));
|
|
}
|
|
|
|
/*
|
|
* 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(list, num)
|
|
register gid_t *list;
|
|
register int num;
|
|
{
|
|
register int i, j;
|
|
gid_t v;
|
|
|
|
/* 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(incred, outcred)
|
|
register struct ucred *incred, *outcred;
|
|
{
|
|
register int i;
|
|
|
|
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);
|
|
}
|
|
#endif /* NFS_NOSERVER */
|