nfs_srvsubs.c revision 36329
11541Srgrimes/* 21541Srgrimes * Copyright (c) 1989, 1993 31541Srgrimes * The Regents of the University of California. All rights reserved. 41541Srgrimes * 51541Srgrimes * This code is derived from software contributed to Berkeley by 61541Srgrimes * Rick Macklem at The University of Guelph. 71541Srgrimes * 81541Srgrimes * Redistribution and use in source and binary forms, with or without 91541Srgrimes * modification, are permitted provided that the following conditions 101541Srgrimes * are met: 111541Srgrimes * 1. Redistributions of source code must retain the above copyright 121541Srgrimes * notice, this list of conditions and the following disclaimer. 131541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141541Srgrimes * notice, this list of conditions and the following disclaimer in the 151541Srgrimes * documentation and/or other materials provided with the distribution. 161541Srgrimes * 3. All advertising materials mentioning features or use of this software 171541Srgrimes * must display the following acknowledgement: 181541Srgrimes * This product includes software developed by the University of 191541Srgrimes * California, Berkeley and its contributors. 201541Srgrimes * 4. Neither the name of the University nor the names of its contributors 211541Srgrimes * may be used to endorse or promote products derived from this software 221541Srgrimes * without specific prior written permission. 231541Srgrimes * 241541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341541Srgrimes * SUCH DAMAGE. 351541Srgrimes * 361541Srgrimes * @(#)nfs_subs.c 8.3 (Berkeley) 1/4/94 3736329Speter * $Id: nfs_subs.c,v 1.54 1998/05/19 07:11:24 peter Exp $ 381541Srgrimes */ 391541Srgrimes 401541Srgrimes/* 411541Srgrimes * These functions support the macros and help fiddle mbuf chains for 421541Srgrimes * the nfs op functions. They do things like create the rpc header and 431541Srgrimes * copy data between mbuf chains and uio lists. 441541Srgrimes */ 451541Srgrimes#include <sys/param.h> 4631886Sbde#include <sys/buf.h> 471541Srgrimes#include <sys/proc.h> 481541Srgrimes#include <sys/systm.h> 491541Srgrimes#include <sys/kernel.h> 501541Srgrimes#include <sys/mount.h> 511541Srgrimes#include <sys/vnode.h> 521541Srgrimes#include <sys/namei.h> 531541Srgrimes#include <sys/mbuf.h> 541541Srgrimes#include <sys/socket.h> 551541Srgrimes#include <sys/stat.h> 569336Sdfr#include <sys/malloc.h> 572997Swollman#include <sys/sysent.h> 582997Swollman#include <sys/syscall.h> 591541Srgrimes 603305Sphk#include <vm/vm.h> 6112662Sdg#include <vm/vm_object.h> 6212662Sdg#include <vm/vm_extern.h> 6332011Sbde#include <vm/vm_zone.h> 643305Sphk 651541Srgrimes#include <nfs/rpcv2.h> 669336Sdfr#include <nfs/nfsproto.h> 6730808Sbde#include <nfs/nfs.h> 681541Srgrimes#include <nfs/nfsnode.h> 691541Srgrimes#include <nfs/xdr_subs.h> 701541Srgrimes#include <nfs/nfsm_subs.h> 711541Srgrimes#include <nfs/nfsmount.h> 721541Srgrimes#include <nfs/nqnfs.h> 731541Srgrimes#include <nfs/nfsrtt.h> 741541Srgrimes 751541Srgrimes#include <miscfs/specfs/specdev.h> 761541Srgrimes 771541Srgrimes#include <netinet/in.h> 781541Srgrimes#ifdef ISO 791541Srgrimes#include <netiso/iso.h> 801541Srgrimes#endif 811541Srgrimes 821541Srgrimes/* 831541Srgrimes * Data items converted to xdr at startup, since they are constant 841541Srgrimes * This is kinda hokey, but may save a little time doing byte swaps 851541Srgrimes */ 861541Srgrimesu_long nfs_xdrneg1; 871541Srgrimesu_long rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 889336Sdfr rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 891541Srgrimes rpc_auth_kerb; 909336Sdfru_long nfs_prog, nqnfs_prog, nfs_true, nfs_false; 911541Srgrimes 921541Srgrimes/* And other global data */ 931541Srgrimesstatic u_long nfs_xid = 0; 9412911Sphkstatic enum vtype nv2tov_type[8]= { 9512911Sphk VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON 9612911Sphk}; 9712911Sphkenum vtype nv3tov_type[8]= { 9812911Sphk VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO 9912911Sphk}; 10012911Sphk 10122521Sdysonint nfs_mount_type; 1029336Sdfrint nfs_ticks; 1039336Sdfr 1049759Sbdestruct nfs_reqq nfs_reqq; 1059759Sbdestruct nfssvc_sockhead nfssvc_sockhead; 1069759Sbdeint nfssvc_sockhead_flag; 1079759Sbdestruct nfsd_head nfsd_head; 1089759Sbdeint nfsd_head_flag; 1099759Sbdestruct nfs_bufq nfs_bufq; 1109759Sbdestruct nqtimerhead nqtimerhead; 1119759Sbdestruct nqfhhashhead *nqfhhashtbl; 1129759Sbdeu_long nqfhhash; 1139759Sbde 11413416Sphk#ifndef NFS_NOSERVER 1159336Sdfr/* 1169336Sdfr * Mapping of old NFS Version 2 RPC numbers to generic numbers. 1179336Sdfr */ 1189336Sdfrint nfsv3_procid[NFS_NPROCS] = { 1199336Sdfr NFSPROC_NULL, 1209336Sdfr NFSPROC_GETATTR, 1219336Sdfr NFSPROC_SETATTR, 1229336Sdfr NFSPROC_NOOP, 1239336Sdfr NFSPROC_LOOKUP, 1249336Sdfr NFSPROC_READLINK, 1259336Sdfr NFSPROC_READ, 1269336Sdfr NFSPROC_NOOP, 1279336Sdfr NFSPROC_WRITE, 1289336Sdfr NFSPROC_CREATE, 1299336Sdfr NFSPROC_REMOVE, 1309336Sdfr NFSPROC_RENAME, 1319336Sdfr NFSPROC_LINK, 1329336Sdfr NFSPROC_SYMLINK, 1339336Sdfr NFSPROC_MKDIR, 1349336Sdfr NFSPROC_RMDIR, 1359336Sdfr NFSPROC_READDIR, 1369336Sdfr NFSPROC_FSSTAT, 1379336Sdfr NFSPROC_NOOP, 1389336Sdfr NFSPROC_NOOP, 1399336Sdfr NFSPROC_NOOP, 1409336Sdfr NFSPROC_NOOP, 1419336Sdfr NFSPROC_NOOP, 1429336Sdfr NFSPROC_NOOP, 1439336Sdfr NFSPROC_NOOP, 1449336Sdfr NFSPROC_NOOP 1459336Sdfr}; 1469336Sdfr 14713416Sphk#endif /* NFS_NOSERVER */ 1489336Sdfr/* 1499336Sdfr * and the reverse mapping from generic to Version 2 procedure numbers 1509336Sdfr */ 1519336Sdfrint nfsv2_procid[NFS_NPROCS] = { 1529336Sdfr NFSV2PROC_NULL, 1539336Sdfr NFSV2PROC_GETATTR, 1549336Sdfr NFSV2PROC_SETATTR, 1559336Sdfr NFSV2PROC_LOOKUP, 1569336Sdfr NFSV2PROC_NOOP, 1579336Sdfr NFSV2PROC_READLINK, 1589336Sdfr NFSV2PROC_READ, 1599336Sdfr NFSV2PROC_WRITE, 1609336Sdfr NFSV2PROC_CREATE, 1619336Sdfr NFSV2PROC_MKDIR, 1629336Sdfr NFSV2PROC_SYMLINK, 1639336Sdfr NFSV2PROC_CREATE, 1649336Sdfr NFSV2PROC_REMOVE, 1659336Sdfr NFSV2PROC_RMDIR, 1669336Sdfr NFSV2PROC_RENAME, 1679336Sdfr NFSV2PROC_LINK, 1689336Sdfr NFSV2PROC_READDIR, 1699336Sdfr NFSV2PROC_NOOP, 1709336Sdfr NFSV2PROC_STATFS, 1719336Sdfr NFSV2PROC_NOOP, 1729336Sdfr NFSV2PROC_NOOP, 1739336Sdfr NFSV2PROC_NOOP, 1749336Sdfr NFSV2PROC_NOOP, 1759336Sdfr NFSV2PROC_NOOP, 1769336Sdfr NFSV2PROC_NOOP, 1779336Sdfr NFSV2PROC_NOOP, 1789336Sdfr}; 1799336Sdfr 18013416Sphk#ifndef NFS_NOSERVER 1819336Sdfr/* 1829336Sdfr * Maps errno values to nfs error numbers. 1839336Sdfr * Use NFSERR_IO as the catch all for ones not specifically defined in 1849336Sdfr * RFC 1094. 1859336Sdfr */ 1869336Sdfrstatic u_char nfsrv_v2errmap[ELAST] = { 1879336Sdfr NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1889336Sdfr NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1899336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 1909336Sdfr NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 1919336Sdfr NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1929336Sdfr NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 1939336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1949336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1959336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1969336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1979336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1989336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1999336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 2009336Sdfr NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 2019336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 2029336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 2039336Sdfr NFSERR_IO, 2049336Sdfr}; 2059336Sdfr 2069336Sdfr/* 2079336Sdfr * Maps errno values to nfs error numbers. 2089336Sdfr * Although it is not obvious whether or not NFS clients really care if 2099336Sdfr * a returned error value is in the specified list for the procedure, the 2109336Sdfr * safest thing to do is filter them appropriately. For Version 2, the 2119336Sdfr * X/Open XNFS document is the only specification that defines error values 2129336Sdfr * for each RPC (The RFC simply lists all possible error values for all RPCs), 2139336Sdfr * so I have decided to not do this for Version 2. 2149336Sdfr * The first entry is the default error return and the rest are the valid 2159336Sdfr * errors for that RPC in increasing numeric order. 2169336Sdfr */ 2179336Sdfrstatic short nfsv3err_null[] = { 2189336Sdfr 0, 2199336Sdfr 0, 2209336Sdfr}; 2219336Sdfr 2229336Sdfrstatic short nfsv3err_getattr[] = { 2239336Sdfr NFSERR_IO, 2249336Sdfr NFSERR_IO, 2259336Sdfr NFSERR_STALE, 2269336Sdfr NFSERR_BADHANDLE, 2279336Sdfr NFSERR_SERVERFAULT, 2289336Sdfr 0, 2299336Sdfr}; 2309336Sdfr 2319336Sdfrstatic short nfsv3err_setattr[] = { 2329336Sdfr NFSERR_IO, 2339336Sdfr NFSERR_PERM, 2349336Sdfr NFSERR_IO, 2359336Sdfr NFSERR_ACCES, 2369336Sdfr NFSERR_INVAL, 2379336Sdfr NFSERR_NOSPC, 2389336Sdfr NFSERR_ROFS, 2399336Sdfr NFSERR_DQUOT, 2409336Sdfr NFSERR_STALE, 2419336Sdfr NFSERR_BADHANDLE, 2429336Sdfr NFSERR_NOT_SYNC, 2439336Sdfr NFSERR_SERVERFAULT, 2449336Sdfr 0, 2459336Sdfr}; 2469336Sdfr 2479336Sdfrstatic short nfsv3err_lookup[] = { 2489336Sdfr NFSERR_IO, 2499336Sdfr NFSERR_NOENT, 2509336Sdfr NFSERR_IO, 2519336Sdfr NFSERR_ACCES, 2529336Sdfr NFSERR_NOTDIR, 2539336Sdfr NFSERR_NAMETOL, 2549336Sdfr NFSERR_STALE, 2559336Sdfr NFSERR_BADHANDLE, 2569336Sdfr NFSERR_SERVERFAULT, 2579336Sdfr 0, 2589336Sdfr}; 2599336Sdfr 2609336Sdfrstatic short nfsv3err_access[] = { 2619336Sdfr NFSERR_IO, 2629336Sdfr NFSERR_IO, 2639336Sdfr NFSERR_STALE, 2649336Sdfr NFSERR_BADHANDLE, 2659336Sdfr NFSERR_SERVERFAULT, 2669336Sdfr 0, 2679336Sdfr}; 2689336Sdfr 2699336Sdfrstatic short nfsv3err_readlink[] = { 2709336Sdfr NFSERR_IO, 2719336Sdfr NFSERR_IO, 2729336Sdfr NFSERR_ACCES, 2739336Sdfr NFSERR_INVAL, 2749336Sdfr NFSERR_STALE, 2759336Sdfr NFSERR_BADHANDLE, 2769336Sdfr NFSERR_NOTSUPP, 2779336Sdfr NFSERR_SERVERFAULT, 2789336Sdfr 0, 2799336Sdfr}; 2809336Sdfr 2819336Sdfrstatic short nfsv3err_read[] = { 2829336Sdfr NFSERR_IO, 2839336Sdfr NFSERR_IO, 2849336Sdfr NFSERR_NXIO, 2859336Sdfr NFSERR_ACCES, 2869336Sdfr NFSERR_INVAL, 2879336Sdfr NFSERR_STALE, 2889336Sdfr NFSERR_BADHANDLE, 2899336Sdfr NFSERR_SERVERFAULT, 2909336Sdfr 0, 2919336Sdfr}; 2929336Sdfr 2939336Sdfrstatic short nfsv3err_write[] = { 2949336Sdfr NFSERR_IO, 2959336Sdfr NFSERR_IO, 2969336Sdfr NFSERR_ACCES, 2979336Sdfr NFSERR_INVAL, 2989336Sdfr NFSERR_FBIG, 2999336Sdfr NFSERR_NOSPC, 3009336Sdfr NFSERR_ROFS, 3019336Sdfr NFSERR_DQUOT, 3029336Sdfr NFSERR_STALE, 3039336Sdfr NFSERR_BADHANDLE, 3049336Sdfr NFSERR_SERVERFAULT, 3059336Sdfr 0, 3069336Sdfr}; 3079336Sdfr 3089336Sdfrstatic short nfsv3err_create[] = { 3099336Sdfr NFSERR_IO, 3109336Sdfr NFSERR_IO, 3119336Sdfr NFSERR_ACCES, 3129336Sdfr NFSERR_EXIST, 3139336Sdfr NFSERR_NOTDIR, 3149336Sdfr NFSERR_NOSPC, 3159336Sdfr NFSERR_ROFS, 3169336Sdfr NFSERR_NAMETOL, 3179336Sdfr NFSERR_DQUOT, 3189336Sdfr NFSERR_STALE, 3199336Sdfr NFSERR_BADHANDLE, 3209336Sdfr NFSERR_NOTSUPP, 3219336Sdfr NFSERR_SERVERFAULT, 3229336Sdfr 0, 3239336Sdfr}; 3249336Sdfr 3259336Sdfrstatic short nfsv3err_mkdir[] = { 3269336Sdfr NFSERR_IO, 3279336Sdfr NFSERR_IO, 3289336Sdfr NFSERR_ACCES, 3299336Sdfr NFSERR_EXIST, 3309336Sdfr NFSERR_NOTDIR, 3319336Sdfr NFSERR_NOSPC, 3329336Sdfr NFSERR_ROFS, 3339336Sdfr NFSERR_NAMETOL, 3349336Sdfr NFSERR_DQUOT, 3359336Sdfr NFSERR_STALE, 3369336Sdfr NFSERR_BADHANDLE, 3379336Sdfr NFSERR_NOTSUPP, 3389336Sdfr NFSERR_SERVERFAULT, 3399336Sdfr 0, 3409336Sdfr}; 3419336Sdfr 3429336Sdfrstatic short nfsv3err_symlink[] = { 3439336Sdfr NFSERR_IO, 3449336Sdfr NFSERR_IO, 3459336Sdfr NFSERR_ACCES, 3469336Sdfr NFSERR_EXIST, 3479336Sdfr NFSERR_NOTDIR, 3489336Sdfr NFSERR_NOSPC, 3499336Sdfr NFSERR_ROFS, 3509336Sdfr NFSERR_NAMETOL, 3519336Sdfr NFSERR_DQUOT, 3529336Sdfr NFSERR_STALE, 3539336Sdfr NFSERR_BADHANDLE, 3549336Sdfr NFSERR_NOTSUPP, 3559336Sdfr NFSERR_SERVERFAULT, 3569336Sdfr 0, 3579336Sdfr}; 3589336Sdfr 3599336Sdfrstatic short nfsv3err_mknod[] = { 3609336Sdfr NFSERR_IO, 3619336Sdfr NFSERR_IO, 3629336Sdfr NFSERR_ACCES, 3639336Sdfr NFSERR_EXIST, 3649336Sdfr NFSERR_NOTDIR, 3659336Sdfr NFSERR_NOSPC, 3669336Sdfr NFSERR_ROFS, 3679336Sdfr NFSERR_NAMETOL, 3689336Sdfr NFSERR_DQUOT, 3699336Sdfr NFSERR_STALE, 3709336Sdfr NFSERR_BADHANDLE, 3719336Sdfr NFSERR_NOTSUPP, 3729336Sdfr NFSERR_SERVERFAULT, 3739336Sdfr NFSERR_BADTYPE, 3749336Sdfr 0, 3759336Sdfr}; 3769336Sdfr 3779336Sdfrstatic short nfsv3err_remove[] = { 3789336Sdfr NFSERR_IO, 3799336Sdfr NFSERR_NOENT, 3809336Sdfr NFSERR_IO, 3819336Sdfr NFSERR_ACCES, 3829336Sdfr NFSERR_NOTDIR, 3839336Sdfr NFSERR_ROFS, 3849336Sdfr NFSERR_NAMETOL, 3859336Sdfr NFSERR_STALE, 3869336Sdfr NFSERR_BADHANDLE, 3879336Sdfr NFSERR_SERVERFAULT, 3889336Sdfr 0, 3899336Sdfr}; 3909336Sdfr 3919336Sdfrstatic short nfsv3err_rmdir[] = { 3929336Sdfr NFSERR_IO, 3939336Sdfr NFSERR_NOENT, 3949336Sdfr NFSERR_IO, 3959336Sdfr NFSERR_ACCES, 3969336Sdfr NFSERR_EXIST, 3979336Sdfr NFSERR_NOTDIR, 3989336Sdfr NFSERR_INVAL, 3999336Sdfr NFSERR_ROFS, 4009336Sdfr NFSERR_NAMETOL, 4019336Sdfr NFSERR_NOTEMPTY, 4029336Sdfr NFSERR_STALE, 4039336Sdfr NFSERR_BADHANDLE, 4049336Sdfr NFSERR_NOTSUPP, 4059336Sdfr NFSERR_SERVERFAULT, 4069336Sdfr 0, 4079336Sdfr}; 4089336Sdfr 4099336Sdfrstatic short nfsv3err_rename[] = { 4109336Sdfr NFSERR_IO, 4119336Sdfr NFSERR_NOENT, 4129336Sdfr NFSERR_IO, 4139336Sdfr NFSERR_ACCES, 4149336Sdfr NFSERR_EXIST, 4159336Sdfr NFSERR_XDEV, 4169336Sdfr NFSERR_NOTDIR, 4179336Sdfr NFSERR_ISDIR, 4189336Sdfr NFSERR_INVAL, 4199336Sdfr NFSERR_NOSPC, 4209336Sdfr NFSERR_ROFS, 4219336Sdfr NFSERR_MLINK, 4229336Sdfr NFSERR_NAMETOL, 4239336Sdfr NFSERR_NOTEMPTY, 4249336Sdfr NFSERR_DQUOT, 4259336Sdfr NFSERR_STALE, 4269336Sdfr NFSERR_BADHANDLE, 4279336Sdfr NFSERR_NOTSUPP, 4289336Sdfr NFSERR_SERVERFAULT, 4299336Sdfr 0, 4309336Sdfr}; 4319336Sdfr 4329336Sdfrstatic short nfsv3err_link[] = { 4339336Sdfr NFSERR_IO, 4349336Sdfr NFSERR_IO, 4359336Sdfr NFSERR_ACCES, 4369336Sdfr NFSERR_EXIST, 4379336Sdfr NFSERR_XDEV, 4389336Sdfr NFSERR_NOTDIR, 4399336Sdfr NFSERR_INVAL, 4409336Sdfr NFSERR_NOSPC, 4419336Sdfr NFSERR_ROFS, 4429336Sdfr NFSERR_MLINK, 4439336Sdfr NFSERR_NAMETOL, 4449336Sdfr NFSERR_DQUOT, 4459336Sdfr NFSERR_STALE, 4469336Sdfr NFSERR_BADHANDLE, 4479336Sdfr NFSERR_NOTSUPP, 4489336Sdfr NFSERR_SERVERFAULT, 4499336Sdfr 0, 4509336Sdfr}; 4519336Sdfr 4529336Sdfrstatic short nfsv3err_readdir[] = { 4539336Sdfr NFSERR_IO, 4549336Sdfr NFSERR_IO, 4559336Sdfr NFSERR_ACCES, 4569336Sdfr NFSERR_NOTDIR, 4579336Sdfr NFSERR_STALE, 4589336Sdfr NFSERR_BADHANDLE, 4599336Sdfr NFSERR_BAD_COOKIE, 4609336Sdfr NFSERR_TOOSMALL, 4619336Sdfr NFSERR_SERVERFAULT, 4629336Sdfr 0, 4639336Sdfr}; 4649336Sdfr 4659336Sdfrstatic short nfsv3err_readdirplus[] = { 4669336Sdfr NFSERR_IO, 4679336Sdfr NFSERR_IO, 4689336Sdfr NFSERR_ACCES, 4699336Sdfr NFSERR_NOTDIR, 4709336Sdfr NFSERR_STALE, 4719336Sdfr NFSERR_BADHANDLE, 4729336Sdfr NFSERR_BAD_COOKIE, 4739336Sdfr NFSERR_NOTSUPP, 4749336Sdfr NFSERR_TOOSMALL, 4759336Sdfr NFSERR_SERVERFAULT, 4769336Sdfr 0, 4779336Sdfr}; 4789336Sdfr 4799336Sdfrstatic short nfsv3err_fsstat[] = { 4809336Sdfr NFSERR_IO, 4819336Sdfr NFSERR_IO, 4829336Sdfr NFSERR_STALE, 4839336Sdfr NFSERR_BADHANDLE, 4849336Sdfr NFSERR_SERVERFAULT, 4859336Sdfr 0, 4869336Sdfr}; 4879336Sdfr 4889336Sdfrstatic short nfsv3err_fsinfo[] = { 4899336Sdfr NFSERR_STALE, 4909336Sdfr NFSERR_STALE, 4919336Sdfr NFSERR_BADHANDLE, 4929336Sdfr NFSERR_SERVERFAULT, 4939336Sdfr 0, 4949336Sdfr}; 4959336Sdfr 4969336Sdfrstatic short nfsv3err_pathconf[] = { 4979336Sdfr NFSERR_STALE, 4989336Sdfr NFSERR_STALE, 4999336Sdfr NFSERR_BADHANDLE, 5009336Sdfr NFSERR_SERVERFAULT, 5019336Sdfr 0, 5029336Sdfr}; 5039336Sdfr 5049336Sdfrstatic short nfsv3err_commit[] = { 5059336Sdfr NFSERR_IO, 5069336Sdfr NFSERR_IO, 5079336Sdfr NFSERR_STALE, 5089336Sdfr NFSERR_BADHANDLE, 5099336Sdfr NFSERR_SERVERFAULT, 5109336Sdfr 0, 5119336Sdfr}; 5129336Sdfr 5139336Sdfrstatic short *nfsrv_v3errmap[] = { 5149336Sdfr nfsv3err_null, 5159336Sdfr nfsv3err_getattr, 5169336Sdfr nfsv3err_setattr, 5179336Sdfr nfsv3err_lookup, 5189336Sdfr nfsv3err_access, 5199336Sdfr nfsv3err_readlink, 5209336Sdfr nfsv3err_read, 5219336Sdfr nfsv3err_write, 5229336Sdfr nfsv3err_create, 5239336Sdfr nfsv3err_mkdir, 5249336Sdfr nfsv3err_symlink, 5259336Sdfr nfsv3err_mknod, 5269336Sdfr nfsv3err_remove, 5279336Sdfr nfsv3err_rmdir, 5289336Sdfr nfsv3err_rename, 5299336Sdfr nfsv3err_link, 5309336Sdfr nfsv3err_readdir, 5319336Sdfr nfsv3err_readdirplus, 5329336Sdfr nfsv3err_fsstat, 5339336Sdfr nfsv3err_fsinfo, 5349336Sdfr nfsv3err_pathconf, 5359336Sdfr nfsv3err_commit, 5369336Sdfr}; 5379336Sdfr 53813416Sphk#endif /* NFS_NOSERVER */ 53913416Sphk 5401541Srgrimesextern struct nfsrtt nfsrtt; 5411541Srgrimesextern time_t nqnfsstarttime; 5421541Srgrimesextern int nqsrv_clockskew; 5431541Srgrimesextern int nqsrv_writeslack; 5441541Srgrimesextern int nqsrv_maxlease; 5459336Sdfrextern struct nfsstats nfsstats; 5469336Sdfrextern int nqnfs_piggy[NFS_NPROCS]; 5479336Sdfrextern nfstype nfsv2_type[9]; 5489336Sdfrextern nfstype nfsv3_type[9]; 5499336Sdfrextern struct nfsnodehashhead *nfsnodehashtbl; 5509336Sdfrextern u_long nfsnodehash; 5511541Srgrimes 5522997Swollmanstruct getfh_args; 5532997Swollmanextern int getfh(struct proc *, struct getfh_args *, int *); 5542997Swollmanstruct nfssvc_args; 5552997Swollmanextern int nfssvc(struct proc *, struct nfssvc_args *, int *); 5562997Swollman 5573664SphkLIST_HEAD(nfsnodehashhead, nfsnode); 5583664Sphk 55927446Sdfrint nfs_webnamei __P((struct nameidata *, struct vnode *, struct proc *)); 56027446Sdfr 56134961Sphku_quad_t 56234961Sphknfs_curusec() 56334961Sphk{ 56434961Sphk struct timeval tv; 56534961Sphk 56634961Sphk getmicrotime(&tv); 56734961Sphk return ((u_quad_t)tv.tv_sec * 1000000 + (u_quad_t)tv.tv_usec); 56834961Sphk} 56934961Sphk 5701541Srgrimes/* 5711541Srgrimes * Create the header for an rpc request packet 5721541Srgrimes * The hsiz is the size of the rest of the nfs request header. 5731541Srgrimes * (just used to decide if a cluster is a good idea) 5741541Srgrimes */ 5751541Srgrimesstruct mbuf * 5761541Srgrimesnfsm_reqh(vp, procid, hsiz, bposp) 5771541Srgrimes struct vnode *vp; 5781541Srgrimes u_long procid; 5791541Srgrimes int hsiz; 5801541Srgrimes caddr_t *bposp; 5811541Srgrimes{ 5821541Srgrimes register struct mbuf *mb; 5831541Srgrimes register u_long *tl; 5841541Srgrimes register caddr_t bpos; 5851541Srgrimes struct mbuf *mb2; 5861541Srgrimes struct nfsmount *nmp; 5871541Srgrimes int nqflag; 5881541Srgrimes 5891541Srgrimes MGET(mb, M_WAIT, MT_DATA); 5901541Srgrimes if (hsiz >= MINCLSIZE) 5911541Srgrimes MCLGET(mb, M_WAIT); 5921541Srgrimes mb->m_len = 0; 5931541Srgrimes bpos = mtod(mb, caddr_t); 5948876Srgrimes 5951541Srgrimes /* 5961541Srgrimes * For NQNFS, add lease request. 5971541Srgrimes */ 5981541Srgrimes if (vp) { 5991541Srgrimes nmp = VFSTONFS(vp->v_mount); 6001541Srgrimes if (nmp->nm_flag & NFSMNT_NQNFS) { 6011541Srgrimes nqflag = NQNFS_NEEDLEASE(vp, procid); 6021541Srgrimes if (nqflag) { 6031541Srgrimes nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); 6041541Srgrimes *tl++ = txdr_unsigned(nqflag); 6051541Srgrimes *tl = txdr_unsigned(nmp->nm_leaseterm); 6061541Srgrimes } else { 6071541Srgrimes nfsm_build(tl, u_long *, NFSX_UNSIGNED); 6081541Srgrimes *tl = 0; 6091541Srgrimes } 6101541Srgrimes } 6111541Srgrimes } 6121541Srgrimes /* Finally, return values */ 6131541Srgrimes *bposp = bpos; 6141541Srgrimes return (mb); 6151541Srgrimes} 6161541Srgrimes 6171541Srgrimes/* 6181541Srgrimes * Build the RPC header and fill in the authorization info. 6191541Srgrimes * The authorization string argument is only used when the credentials 6201541Srgrimes * come from outside of the kernel. 6211541Srgrimes * Returns the head of the mbuf list. 6221541Srgrimes */ 6231541Srgrimesstruct mbuf * 6249336Sdfrnfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 6259336Sdfr verf_str, mrest, mrest_len, mbp, xidp) 6261541Srgrimes register struct ucred *cr; 6279336Sdfr int nmflag; 6281541Srgrimes int procid; 6291541Srgrimes int auth_type; 6301541Srgrimes int auth_len; 6311541Srgrimes char *auth_str; 6329336Sdfr int verf_len; 6339336Sdfr char *verf_str; 6341541Srgrimes struct mbuf *mrest; 6351541Srgrimes int mrest_len; 6361541Srgrimes struct mbuf **mbp; 6371541Srgrimes u_long *xidp; 6381541Srgrimes{ 6391541Srgrimes register struct mbuf *mb; 6401541Srgrimes register u_long *tl; 6411541Srgrimes register caddr_t bpos; 6421541Srgrimes register int i; 6431541Srgrimes struct mbuf *mreq, *mb2; 6441541Srgrimes int siz, grpsiz, authsiz; 64517186Sdfr static u_long base; 6461541Srgrimes 6471541Srgrimes authsiz = nfsm_rndup(auth_len); 6481541Srgrimes MGETHDR(mb, M_WAIT, MT_DATA); 6499336Sdfr if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 6501541Srgrimes MCLGET(mb, M_WAIT); 6519336Sdfr } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 6529336Sdfr MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 6531541Srgrimes } else { 6549336Sdfr MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 6551541Srgrimes } 6561541Srgrimes mb->m_len = 0; 6571541Srgrimes mreq = mb; 6581541Srgrimes bpos = mtod(mb, caddr_t); 6591541Srgrimes 6601541Srgrimes /* 6611541Srgrimes * First the RPC header. 6621541Srgrimes */ 6639336Sdfr nfsm_build(tl, u_long *, 8 * NFSX_UNSIGNED); 66417186Sdfr 66535066Sphk /* Get a pretty random xid to start with */ 66635066Sphk if (!nfs_xid) 66735066Sphk nfs_xid = random(); 66817186Sdfr /* 66917186Sdfr * Skip zero xid if it should ever happen. 67017186Sdfr */ 6711541Srgrimes if (++nfs_xid == 0) 6721541Srgrimes nfs_xid++; 67317186Sdfr 6741541Srgrimes *tl++ = *xidp = txdr_unsigned(nfs_xid); 6751541Srgrimes *tl++ = rpc_call; 6761541Srgrimes *tl++ = rpc_vers; 6779336Sdfr if (nmflag & NFSMNT_NQNFS) { 6781541Srgrimes *tl++ = txdr_unsigned(NQNFS_PROG); 6799336Sdfr *tl++ = txdr_unsigned(NQNFS_VER3); 6801541Srgrimes } else { 6811541Srgrimes *tl++ = txdr_unsigned(NFS_PROG); 6829336Sdfr if (nmflag & NFSMNT_NFSV3) 6839336Sdfr *tl++ = txdr_unsigned(NFS_VER3); 6849336Sdfr else 6859336Sdfr *tl++ = txdr_unsigned(NFS_VER2); 6861541Srgrimes } 6879336Sdfr if (nmflag & NFSMNT_NFSV3) 6889336Sdfr *tl++ = txdr_unsigned(procid); 6899336Sdfr else 6909336Sdfr *tl++ = txdr_unsigned(nfsv2_procid[procid]); 6911541Srgrimes 6921541Srgrimes /* 6931541Srgrimes * And then the authorization cred. 6941541Srgrimes */ 6951541Srgrimes *tl++ = txdr_unsigned(auth_type); 6961541Srgrimes *tl = txdr_unsigned(authsiz); 6971541Srgrimes switch (auth_type) { 6981541Srgrimes case RPCAUTH_UNIX: 6991541Srgrimes nfsm_build(tl, u_long *, auth_len); 7001541Srgrimes *tl++ = 0; /* stamp ?? */ 7011541Srgrimes *tl++ = 0; /* NULL hostname */ 7021541Srgrimes *tl++ = txdr_unsigned(cr->cr_uid); 7031541Srgrimes *tl++ = txdr_unsigned(cr->cr_groups[0]); 7041541Srgrimes grpsiz = (auth_len >> 2) - 5; 7051541Srgrimes *tl++ = txdr_unsigned(grpsiz); 7061541Srgrimes for (i = 1; i <= grpsiz; i++) 7071541Srgrimes *tl++ = txdr_unsigned(cr->cr_groups[i]); 7081541Srgrimes break; 7099336Sdfr case RPCAUTH_KERB4: 7101541Srgrimes siz = auth_len; 7111541Srgrimes while (siz > 0) { 7121541Srgrimes if (M_TRAILINGSPACE(mb) == 0) { 7131541Srgrimes MGET(mb2, M_WAIT, MT_DATA); 7141541Srgrimes if (siz >= MINCLSIZE) 7151541Srgrimes MCLGET(mb2, M_WAIT); 7161541Srgrimes mb->m_next = mb2; 7171541Srgrimes mb = mb2; 7181541Srgrimes mb->m_len = 0; 7191541Srgrimes bpos = mtod(mb, caddr_t); 7201541Srgrimes } 7211541Srgrimes i = min(siz, M_TRAILINGSPACE(mb)); 7221541Srgrimes bcopy(auth_str, bpos, i); 7231541Srgrimes mb->m_len += i; 7241541Srgrimes auth_str += i; 7251541Srgrimes bpos += i; 7261541Srgrimes siz -= i; 7271541Srgrimes } 7281541Srgrimes if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 7291541Srgrimes for (i = 0; i < siz; i++) 7301541Srgrimes *bpos++ = '\0'; 7311541Srgrimes mb->m_len += siz; 7321541Srgrimes } 7331541Srgrimes break; 7341541Srgrimes }; 7359336Sdfr 7369336Sdfr /* 7379336Sdfr * And the verifier... 7389336Sdfr */ 7399336Sdfr nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); 7409336Sdfr if (verf_str) { 7419336Sdfr *tl++ = txdr_unsigned(RPCAUTH_KERB4); 7429336Sdfr *tl = txdr_unsigned(verf_len); 7439336Sdfr siz = verf_len; 7449336Sdfr while (siz > 0) { 7459336Sdfr if (M_TRAILINGSPACE(mb) == 0) { 7469336Sdfr MGET(mb2, M_WAIT, MT_DATA); 7479336Sdfr if (siz >= MINCLSIZE) 7489336Sdfr MCLGET(mb2, M_WAIT); 7499336Sdfr mb->m_next = mb2; 7509336Sdfr mb = mb2; 7519336Sdfr mb->m_len = 0; 7529336Sdfr bpos = mtod(mb, caddr_t); 7539336Sdfr } 7549336Sdfr i = min(siz, M_TRAILINGSPACE(mb)); 7559336Sdfr bcopy(verf_str, bpos, i); 7569336Sdfr mb->m_len += i; 7579336Sdfr verf_str += i; 7589336Sdfr bpos += i; 7599336Sdfr siz -= i; 7609336Sdfr } 7619336Sdfr if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 7629336Sdfr for (i = 0; i < siz; i++) 7639336Sdfr *bpos++ = '\0'; 7649336Sdfr mb->m_len += siz; 7659336Sdfr } 7669336Sdfr } else { 7679336Sdfr *tl++ = txdr_unsigned(RPCAUTH_NULL); 7689336Sdfr *tl = 0; 7699336Sdfr } 7701541Srgrimes mb->m_next = mrest; 7719336Sdfr mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 7721541Srgrimes mreq->m_pkthdr.rcvif = (struct ifnet *)0; 7731541Srgrimes *mbp = mb; 7741541Srgrimes return (mreq); 7751541Srgrimes} 7761541Srgrimes 7771541Srgrimes/* 7781541Srgrimes * copies mbuf chain to the uio scatter/gather list 7791541Srgrimes */ 7801549Srgrimesint 7811541Srgrimesnfsm_mbuftouio(mrep, uiop, siz, dpos) 7821541Srgrimes struct mbuf **mrep; 7831541Srgrimes register struct uio *uiop; 7841541Srgrimes int siz; 7851541Srgrimes caddr_t *dpos; 7861541Srgrimes{ 7871541Srgrimes register char *mbufcp, *uiocp; 7881541Srgrimes register int xfer, left, len; 7891541Srgrimes register struct mbuf *mp; 7901541Srgrimes long uiosiz, rem; 7911541Srgrimes int error = 0; 7921541Srgrimes 7931541Srgrimes mp = *mrep; 7941541Srgrimes mbufcp = *dpos; 7951541Srgrimes len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 7961541Srgrimes rem = nfsm_rndup(siz)-siz; 7971541Srgrimes while (siz > 0) { 7981541Srgrimes if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 7991541Srgrimes return (EFBIG); 8001541Srgrimes left = uiop->uio_iov->iov_len; 8011541Srgrimes uiocp = uiop->uio_iov->iov_base; 8021541Srgrimes if (left > siz) 8031541Srgrimes left = siz; 8041541Srgrimes uiosiz = left; 8051541Srgrimes while (left > 0) { 8061541Srgrimes while (len == 0) { 8071541Srgrimes mp = mp->m_next; 8081541Srgrimes if (mp == NULL) 8091541Srgrimes return (EBADRPC); 8101541Srgrimes mbufcp = mtod(mp, caddr_t); 8111541Srgrimes len = mp->m_len; 8121541Srgrimes } 8131541Srgrimes xfer = (left > len) ? len : left; 8141541Srgrimes#ifdef notdef 8151541Srgrimes /* Not Yet.. */ 8161541Srgrimes if (uiop->uio_iov->iov_op != NULL) 8171541Srgrimes (*(uiop->uio_iov->iov_op)) 8181541Srgrimes (mbufcp, uiocp, xfer); 8191541Srgrimes else 8201541Srgrimes#endif 8211541Srgrimes if (uiop->uio_segflg == UIO_SYSSPACE) 8221541Srgrimes bcopy(mbufcp, uiocp, xfer); 8231541Srgrimes else 8241541Srgrimes copyout(mbufcp, uiocp, xfer); 8251541Srgrimes left -= xfer; 8261541Srgrimes len -= xfer; 8271541Srgrimes mbufcp += xfer; 8281541Srgrimes uiocp += xfer; 8291541Srgrimes uiop->uio_offset += xfer; 8301541Srgrimes uiop->uio_resid -= xfer; 8311541Srgrimes } 8321541Srgrimes if (uiop->uio_iov->iov_len <= siz) { 8331541Srgrimes uiop->uio_iovcnt--; 8341541Srgrimes uiop->uio_iov++; 8351541Srgrimes } else { 8361541Srgrimes uiop->uio_iov->iov_base += uiosiz; 8371541Srgrimes uiop->uio_iov->iov_len -= uiosiz; 8381541Srgrimes } 8391541Srgrimes siz -= uiosiz; 8401541Srgrimes } 8411541Srgrimes *dpos = mbufcp; 8421541Srgrimes *mrep = mp; 8431541Srgrimes if (rem > 0) { 8441541Srgrimes if (len < rem) 8451541Srgrimes error = nfs_adv(mrep, dpos, rem, len); 8461541Srgrimes else 8471541Srgrimes *dpos += rem; 8481541Srgrimes } 8491541Srgrimes return (error); 8501541Srgrimes} 8511541Srgrimes 8521541Srgrimes/* 85317186Sdfr * copies a uio scatter/gather list to an mbuf chain. 85417186Sdfr * NOTE: can ony handle iovcnt == 1 8551541Srgrimes */ 8561549Srgrimesint 8571541Srgrimesnfsm_uiotombuf(uiop, mq, siz, bpos) 8581541Srgrimes register struct uio *uiop; 8591541Srgrimes struct mbuf **mq; 8601541Srgrimes int siz; 8611541Srgrimes caddr_t *bpos; 8621541Srgrimes{ 8631541Srgrimes register char *uiocp; 8641541Srgrimes register struct mbuf *mp, *mp2; 8651541Srgrimes register int xfer, left, mlen; 8661541Srgrimes int uiosiz, clflg, rem; 8671541Srgrimes char *cp; 8681541Srgrimes 86917186Sdfr if (uiop->uio_iovcnt != 1) 87017186Sdfr panic("nfsm_uiotombuf: iovcnt != 1"); 87117186Sdfr 8721541Srgrimes if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 8731541Srgrimes clflg = 1; 8741541Srgrimes else 8751541Srgrimes clflg = 0; 8761541Srgrimes rem = nfsm_rndup(siz)-siz; 8771541Srgrimes mp = mp2 = *mq; 8781541Srgrimes while (siz > 0) { 8791541Srgrimes left = uiop->uio_iov->iov_len; 8801541Srgrimes uiocp = uiop->uio_iov->iov_base; 8811541Srgrimes if (left > siz) 8821541Srgrimes left = siz; 8831541Srgrimes uiosiz = left; 8841541Srgrimes while (left > 0) { 8851541Srgrimes mlen = M_TRAILINGSPACE(mp); 8861541Srgrimes if (mlen == 0) { 8871541Srgrimes MGET(mp, M_WAIT, MT_DATA); 8881541Srgrimes if (clflg) 8891541Srgrimes MCLGET(mp, M_WAIT); 8901541Srgrimes mp->m_len = 0; 8911541Srgrimes mp2->m_next = mp; 8921541Srgrimes mp2 = mp; 8931541Srgrimes mlen = M_TRAILINGSPACE(mp); 8941541Srgrimes } 8951541Srgrimes xfer = (left > mlen) ? mlen : left; 8961541Srgrimes#ifdef notdef 8971541Srgrimes /* Not Yet.. */ 8981541Srgrimes if (uiop->uio_iov->iov_op != NULL) 8991541Srgrimes (*(uiop->uio_iov->iov_op)) 9001541Srgrimes (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 9011541Srgrimes else 9021541Srgrimes#endif 9031541Srgrimes if (uiop->uio_segflg == UIO_SYSSPACE) 9041541Srgrimes bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 9051541Srgrimes else 9061541Srgrimes copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 9071541Srgrimes mp->m_len += xfer; 9081541Srgrimes left -= xfer; 9091541Srgrimes uiocp += xfer; 9101541Srgrimes uiop->uio_offset += xfer; 9111541Srgrimes uiop->uio_resid -= xfer; 9121541Srgrimes } 91317186Sdfr uiop->uio_iov->iov_base += uiosiz; 91417186Sdfr uiop->uio_iov->iov_len -= uiosiz; 9151541Srgrimes siz -= uiosiz; 9161541Srgrimes } 9171541Srgrimes if (rem > 0) { 9181541Srgrimes if (rem > M_TRAILINGSPACE(mp)) { 9191541Srgrimes MGET(mp, M_WAIT, MT_DATA); 9201541Srgrimes mp->m_len = 0; 9211541Srgrimes mp2->m_next = mp; 9221541Srgrimes } 9231541Srgrimes cp = mtod(mp, caddr_t)+mp->m_len; 9241541Srgrimes for (left = 0; left < rem; left++) 9251541Srgrimes *cp++ = '\0'; 9261541Srgrimes mp->m_len += rem; 9271541Srgrimes *bpos = cp; 9281541Srgrimes } else 9291541Srgrimes *bpos = mtod(mp, caddr_t)+mp->m_len; 9301541Srgrimes *mq = mp; 9311541Srgrimes return (0); 9321541Srgrimes} 9331541Srgrimes 9341541Srgrimes/* 9351541Srgrimes * Help break down an mbuf chain by setting the first siz bytes contiguous 9361541Srgrimes * pointed to by returned val. 9371541Srgrimes * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 9381541Srgrimes * cases. (The macros use the vars. dpos and dpos2) 9391541Srgrimes */ 9401549Srgrimesint 9411541Srgrimesnfsm_disct(mdp, dposp, siz, left, cp2) 9421541Srgrimes struct mbuf **mdp; 9431541Srgrimes caddr_t *dposp; 9441541Srgrimes int siz; 9451541Srgrimes int left; 9461541Srgrimes caddr_t *cp2; 9471541Srgrimes{ 9481541Srgrimes register struct mbuf *mp, *mp2; 9491541Srgrimes register int siz2, xfer; 9501541Srgrimes register caddr_t p; 9511541Srgrimes 9521541Srgrimes mp = *mdp; 9531541Srgrimes while (left == 0) { 9541541Srgrimes *mdp = mp = mp->m_next; 9551541Srgrimes if (mp == NULL) 9561541Srgrimes return (EBADRPC); 9571541Srgrimes left = mp->m_len; 9581541Srgrimes *dposp = mtod(mp, caddr_t); 9591541Srgrimes } 9601541Srgrimes if (left >= siz) { 9611541Srgrimes *cp2 = *dposp; 9621541Srgrimes *dposp += siz; 9631541Srgrimes } else if (mp->m_next == NULL) { 9641541Srgrimes return (EBADRPC); 9651541Srgrimes } else if (siz > MHLEN) { 9661541Srgrimes panic("nfs S too big"); 9671541Srgrimes } else { 9681541Srgrimes MGET(mp2, M_WAIT, MT_DATA); 9691541Srgrimes mp2->m_next = mp->m_next; 9701541Srgrimes mp->m_next = mp2; 9711541Srgrimes mp->m_len -= left; 9721541Srgrimes mp = mp2; 9731541Srgrimes *cp2 = p = mtod(mp, caddr_t); 9741541Srgrimes bcopy(*dposp, p, left); /* Copy what was left */ 9751541Srgrimes siz2 = siz-left; 9761541Srgrimes p += left; 9771541Srgrimes mp2 = mp->m_next; 9781541Srgrimes /* Loop around copying up the siz2 bytes */ 9791541Srgrimes while (siz2 > 0) { 9801541Srgrimes if (mp2 == NULL) 9811541Srgrimes return (EBADRPC); 9821541Srgrimes xfer = (siz2 > mp2->m_len) ? mp2->m_len : siz2; 9831541Srgrimes if (xfer > 0) { 9841541Srgrimes bcopy(mtod(mp2, caddr_t), p, xfer); 9851541Srgrimes NFSMADV(mp2, xfer); 9861541Srgrimes mp2->m_len -= xfer; 9871541Srgrimes p += xfer; 9881541Srgrimes siz2 -= xfer; 9891541Srgrimes } 9901541Srgrimes if (siz2 > 0) 9911541Srgrimes mp2 = mp2->m_next; 9921541Srgrimes } 9931541Srgrimes mp->m_len = siz; 9941541Srgrimes *mdp = mp2; 9951541Srgrimes *dposp = mtod(mp2, caddr_t); 9961541Srgrimes } 9971541Srgrimes return (0); 9981541Srgrimes} 9991541Srgrimes 10001541Srgrimes/* 10011541Srgrimes * Advance the position in the mbuf chain. 10021541Srgrimes */ 10031549Srgrimesint 10041541Srgrimesnfs_adv(mdp, dposp, offs, left) 10051541Srgrimes struct mbuf **mdp; 10061541Srgrimes caddr_t *dposp; 10071541Srgrimes int offs; 10081541Srgrimes int left; 10091541Srgrimes{ 10101541Srgrimes register struct mbuf *m; 10111541Srgrimes register int s; 10121541Srgrimes 10131541Srgrimes m = *mdp; 10141541Srgrimes s = left; 10151541Srgrimes while (s < offs) { 10161541Srgrimes offs -= s; 10171541Srgrimes m = m->m_next; 10181541Srgrimes if (m == NULL) 10191541Srgrimes return (EBADRPC); 10201541Srgrimes s = m->m_len; 10211541Srgrimes } 10221541Srgrimes *mdp = m; 10231541Srgrimes *dposp = mtod(m, caddr_t)+offs; 10241541Srgrimes return (0); 10251541Srgrimes} 10261541Srgrimes 10271541Srgrimes/* 10281541Srgrimes * Copy a string into mbufs for the hard cases... 10291541Srgrimes */ 10301549Srgrimesint 10311541Srgrimesnfsm_strtmbuf(mb, bpos, cp, siz) 10321541Srgrimes struct mbuf **mb; 10331541Srgrimes char **bpos; 10341541Srgrimes char *cp; 10351541Srgrimes long siz; 10361541Srgrimes{ 10371549Srgrimes register struct mbuf *m1 = 0, *m2; 10381541Srgrimes long left, xfer, len, tlen; 10391541Srgrimes u_long *tl; 10401541Srgrimes int putsize; 10411541Srgrimes 10421541Srgrimes putsize = 1; 10431541Srgrimes m2 = *mb; 10441541Srgrimes left = M_TRAILINGSPACE(m2); 10451541Srgrimes if (left > 0) { 10461541Srgrimes tl = ((u_long *)(*bpos)); 10471541Srgrimes *tl++ = txdr_unsigned(siz); 10481541Srgrimes putsize = 0; 10491541Srgrimes left -= NFSX_UNSIGNED; 10501541Srgrimes m2->m_len += NFSX_UNSIGNED; 10511541Srgrimes if (left > 0) { 10521541Srgrimes bcopy(cp, (caddr_t) tl, left); 10531541Srgrimes siz -= left; 10541541Srgrimes cp += left; 10551541Srgrimes m2->m_len += left; 10561541Srgrimes left = 0; 10571541Srgrimes } 10581541Srgrimes } 10591541Srgrimes /* Loop around adding mbufs */ 10601541Srgrimes while (siz > 0) { 10611541Srgrimes MGET(m1, M_WAIT, MT_DATA); 10621541Srgrimes if (siz > MLEN) 10631541Srgrimes MCLGET(m1, M_WAIT); 10641541Srgrimes m1->m_len = NFSMSIZ(m1); 10651541Srgrimes m2->m_next = m1; 10661541Srgrimes m2 = m1; 10671541Srgrimes tl = mtod(m1, u_long *); 10681541Srgrimes tlen = 0; 10691541Srgrimes if (putsize) { 10701541Srgrimes *tl++ = txdr_unsigned(siz); 10711541Srgrimes m1->m_len -= NFSX_UNSIGNED; 10721541Srgrimes tlen = NFSX_UNSIGNED; 10731541Srgrimes putsize = 0; 10741541Srgrimes } 10751541Srgrimes if (siz < m1->m_len) { 10761541Srgrimes len = nfsm_rndup(siz); 10771541Srgrimes xfer = siz; 10781541Srgrimes if (xfer < len) 10791541Srgrimes *(tl+(xfer>>2)) = 0; 10801541Srgrimes } else { 10811541Srgrimes xfer = len = m1->m_len; 10821541Srgrimes } 10831541Srgrimes bcopy(cp, (caddr_t) tl, xfer); 10841541Srgrimes m1->m_len = len+tlen; 10851541Srgrimes siz -= xfer; 10861541Srgrimes cp += xfer; 10871541Srgrimes } 10881541Srgrimes *mb = m1; 10891541Srgrimes *bpos = mtod(m1, caddr_t)+m1->m_len; 10901541Srgrimes return (0); 10911541Srgrimes} 10921541Srgrimes 10931541Srgrimes/* 10941541Srgrimes * Called once to initialize data structures... 10951541Srgrimes */ 10961549Srgrimesint 109722521Sdysonnfs_init(vfsp) 109822521Sdyson struct vfsconf *vfsp; 10991541Srgrimes{ 11001541Srgrimes register int i; 11011541Srgrimes 110236329Speter nfsmount_zone = zinit("NFSMOUNT", sizeof(struct nfsmount), 0, 0, 1); 110336329Speter 11049336Sdfr /* 11059336Sdfr * Check to see if major data structures haven't bloated. 11069336Sdfr */ 11079336Sdfr if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) { 11089336Sdfr printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC); 11099336Sdfr printf("Try reducing NFS_UIDHASHSIZ\n"); 11109336Sdfr } 11119336Sdfr if (sizeof (struct nfsuid) > NFS_UIDALLOC) { 11129336Sdfr printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC); 11139336Sdfr printf("Try unionizing the nu_nickname and nu_flag fields\n"); 11149336Sdfr } 111522521Sdyson nfs_mount_type = vfsp->vfc_typenum; 11161541Srgrimes nfsrtt.pos = 0; 11171541Srgrimes rpc_vers = txdr_unsigned(RPC_VER2); 11181541Srgrimes rpc_call = txdr_unsigned(RPC_CALL); 11191541Srgrimes rpc_reply = txdr_unsigned(RPC_REPLY); 11201541Srgrimes rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 11211541Srgrimes rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 11221541Srgrimes rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 11231541Srgrimes rpc_autherr = txdr_unsigned(RPC_AUTHERR); 11241541Srgrimes rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 11259336Sdfr rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 11261541Srgrimes nfs_prog = txdr_unsigned(NFS_PROG); 11279336Sdfr nqnfs_prog = txdr_unsigned(NQNFS_PROG); 11281541Srgrimes nfs_true = txdr_unsigned(TRUE); 11291541Srgrimes nfs_false = txdr_unsigned(FALSE); 11303664Sphk nfs_xdrneg1 = txdr_unsigned(-1); 11319336Sdfr nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 11329336Sdfr if (nfs_ticks < 1) 11339336Sdfr nfs_ticks = 1; 11341541Srgrimes /* Ensure async daemons disabled */ 113519449Sdfr for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { 11361541Srgrimes nfs_iodwant[i] = (struct proc *)0; 113719449Sdfr nfs_iodmount[i] = (struct nfsmount *)0; 113819449Sdfr } 11391541Srgrimes nfs_nhinit(); /* Init the nfsnode table */ 114013416Sphk#ifndef NFS_NOSERVER 11411541Srgrimes nfsrv_init(0); /* Init server data structures */ 11421541Srgrimes nfsrv_initcache(); /* Init the server request cache */ 114313416Sphk#endif 11441541Srgrimes 11451541Srgrimes /* 11461541Srgrimes * Initialize the nqnfs server stuff. 11471541Srgrimes */ 11481541Srgrimes if (nqnfsstarttime == 0) { 11491541Srgrimes nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 11501541Srgrimes + nqsrv_clockskew + nqsrv_writeslack; 11511541Srgrimes NQLOADNOVRAM(nqnfsstarttime); 11523664Sphk CIRCLEQ_INIT(&nqtimerhead); 11533664Sphk nqfhhashtbl = hashinit(NQLCHSZ, M_NQLEASE, &nqfhhash); 11541541Srgrimes } 11551541Srgrimes 11561541Srgrimes /* 11571541Srgrimes * Initialize reply list and start timer 11581541Srgrimes */ 11593664Sphk TAILQ_INIT(&nfs_reqq); 116016365Sphk 11613305Sphk nfs_timer(0); 11621549Srgrimes 116316365Sphk 11642997Swollman /* 11652997Swollman * Set up lease_check and lease_updatetime so that other parts 11662997Swollman * of the system can call us, if we are loadable. 11672997Swollman */ 116813416Sphk#ifndef NFS_NOSERVER 116930738Sphk default_vnodeop_p[VOFFSET(vop_lease)] = (vop_t *)nqnfs_vop_lease_check; 117013416Sphk#endif 11712997Swollman lease_updatetime = nfs_lease_updatetime; 117222521Sdyson vfsp->vfc_refcount++; /* make us non-unloadable */ 11732997Swollman sysent[SYS_nfssvc].sy_narg = 2; 117430738Sphk sysent[SYS_nfssvc].sy_call = (sy_call_t *)nfssvc; 117513416Sphk#ifndef NFS_NOSERVER 11762997Swollman sysent[SYS_getfh].sy_narg = 2; 117730738Sphk sysent[SYS_getfh].sy_call = (sy_call_t *)getfh; 11782997Swollman#endif 11792997Swollman 11801549Srgrimes return (0); 11811541Srgrimes} 11821541Srgrimes 11831541Srgrimes/* 11841541Srgrimes * Attribute cache routines. 11851541Srgrimes * nfs_loadattrcache() - loads or updates the cache contents from attributes 11861541Srgrimes * that are on the mbuf list 11871541Srgrimes * nfs_getattrcache() - returns valid attributes if found in cache, returns 11881541Srgrimes * error otherwise 11891541Srgrimes */ 11901541Srgrimes 11911541Srgrimes/* 11921541Srgrimes * Load the attribute cache (that lives in the nfsnode entry) with 11931541Srgrimes * the values on the mbuf list and 11941541Srgrimes * Iff vap not NULL 11951541Srgrimes * copy the attributes to *vaper 11961541Srgrimes */ 11971549Srgrimesint 11981541Srgrimesnfs_loadattrcache(vpp, mdp, dposp, vaper) 11991541Srgrimes struct vnode **vpp; 12001541Srgrimes struct mbuf **mdp; 12011541Srgrimes caddr_t *dposp; 12021541Srgrimes struct vattr *vaper; 12031541Srgrimes{ 12041541Srgrimes register struct vnode *vp = *vpp; 12051541Srgrimes register struct vattr *vap; 12069336Sdfr register struct nfs_fattr *fp; 12073664Sphk register struct nfsnode *np; 12081541Srgrimes register long t1; 12099336Sdfr caddr_t cp2; 12109336Sdfr int error = 0, rdev; 12111541Srgrimes struct mbuf *md; 12121541Srgrimes enum vtype vtyp; 12131541Srgrimes u_short vmode; 12141541Srgrimes struct timespec mtime; 12151541Srgrimes struct vnode *nvp; 12169336Sdfr int v3 = NFS_ISV3(vp); 12171541Srgrimes 12181541Srgrimes md = *mdp; 12199336Sdfr t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 12209336Sdfr if (error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2)) 12211541Srgrimes return (error); 12229336Sdfr fp = (struct nfs_fattr *)cp2; 12239336Sdfr if (v3) { 12249336Sdfr vtyp = nfsv3tov_type(fp->fa_type); 12259336Sdfr vmode = fxdr_unsigned(u_short, fp->fa_mode); 122616634Sbde rdev = makedev(fxdr_unsigned(int, fp->fa3_rdev.specdata1), 122716634Sbde fxdr_unsigned(int, fp->fa3_rdev.specdata2)); 12289336Sdfr fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 12291541Srgrimes } else { 12309336Sdfr vtyp = nfsv2tov_type(fp->fa_type); 12319336Sdfr vmode = fxdr_unsigned(u_short, fp->fa_mode); 12329336Sdfr /* 12339336Sdfr * XXX 12349336Sdfr * 12359336Sdfr * The duplicate information returned in fa_type and fa_mode 12369336Sdfr * is an ambiguity in the NFS version 2 protocol. 12379336Sdfr * 12389336Sdfr * VREG should be taken literally as a regular file. If a 12399336Sdfr * server intents to return some type information differently 12409336Sdfr * in the upper bits of the mode field (e.g. for sockets, or 12419336Sdfr * FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we 12429336Sdfr * leave the examination of the mode bits even in the VREG 12439336Sdfr * case to avoid breakage for bogus servers, but we make sure 12449336Sdfr * that there are actually type bits set in the upper part of 12459336Sdfr * fa_mode (and failing that, trust the va_type field). 12469336Sdfr * 12479336Sdfr * NFSv3 cleared the issue, and requires fa_mode to not 12489336Sdfr * contain any type information (while also introduing sockets 12499336Sdfr * and FIFOs for fa_type). 12509336Sdfr */ 12519336Sdfr if (vtyp == VNON || (vtyp == VREG && (vmode & S_IFMT) != 0)) 12529336Sdfr vtyp = IFTOVT(vmode); 12539336Sdfr rdev = fxdr_unsigned(long, fp->fa2_rdev); 12549336Sdfr fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 12559336Sdfr 12569336Sdfr /* 12579336Sdfr * Really ugly NFSv2 kludge. 12589336Sdfr */ 12599336Sdfr if (vtyp == VCHR && rdev == 0xffffffff) 12609336Sdfr vtyp = VFIFO; 12611541Srgrimes } 12629336Sdfr 12631541Srgrimes /* 12641541Srgrimes * If v_type == VNON it is a new node, so fill in the v_type, 12658876Srgrimes * n_mtime fields. Check to see if it represents a special 12661541Srgrimes * device, and if so, check for a possible alias. Once the 12671541Srgrimes * correct vnode has been obtained, fill in the rest of the 12681541Srgrimes * information. 12691541Srgrimes */ 12701541Srgrimes np = VTONFS(vp); 127110219Sdfr if (vp->v_type != vtyp) { 12729336Sdfr vp->v_type = vtyp; 12731541Srgrimes if (vp->v_type == VFIFO) { 12741541Srgrimes vp->v_op = fifo_nfsv2nodeop_p; 12751541Srgrimes } 12761541Srgrimes if (vp->v_type == VCHR || vp->v_type == VBLK) { 12771541Srgrimes vp->v_op = spec_nfsv2nodeop_p; 12783305Sphk nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 12793305Sphk if (nvp) { 12801541Srgrimes /* 12811541Srgrimes * Discard unneeded vnode, but save its nfsnode. 128222521Sdyson * Since the nfsnode does not have a lock, its 128322521Sdyson * vnode lock has to be carried over. 12841541Srgrimes */ 128522521Sdyson nvp->v_vnlock = vp->v_vnlock; 128622521Sdyson vp->v_vnlock = NULL; 12871541Srgrimes nvp->v_data = vp->v_data; 12881541Srgrimes vp->v_data = NULL; 12891541Srgrimes vp->v_op = spec_vnodeop_p; 12901541Srgrimes vrele(vp); 12911541Srgrimes vgone(vp); 12921541Srgrimes /* 12931541Srgrimes * Reinitialize aliased node. 12941541Srgrimes */ 12951541Srgrimes np->n_vnode = nvp; 12961541Srgrimes *vpp = vp = nvp; 12971541Srgrimes } 12981541Srgrimes } 129918397Snate np->n_mtime = mtime.tv_sec; 13001541Srgrimes } 13011541Srgrimes vap = &np->n_vattr; 13021541Srgrimes vap->va_type = vtyp; 13031541Srgrimes vap->va_mode = (vmode & 07777); 13041541Srgrimes vap->va_rdev = (dev_t)rdev; 13051541Srgrimes vap->va_mtime = mtime; 13061541Srgrimes vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 13079336Sdfr if (v3) { 13089336Sdfr vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 13099336Sdfr vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 13109336Sdfr vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 13119336Sdfr fxdr_hyper(&fp->fa3_size, &vap->va_size); 13129336Sdfr vap->va_blocksize = NFS_FABLKSIZE; 13139336Sdfr fxdr_hyper(&fp->fa3_used, &vap->va_bytes); 13149336Sdfr vap->va_fileid = fxdr_unsigned(int, fp->fa3_fileid.nfsuquad[1]); 13159336Sdfr fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 13169336Sdfr fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 13179336Sdfr vap->va_flags = 0; 13189336Sdfr vap->va_filerev = 0; 13191541Srgrimes } else { 13209336Sdfr vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 13219336Sdfr vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 13229336Sdfr vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 13239336Sdfr vap->va_size = fxdr_unsigned(u_long, fp->fa2_size); 13249336Sdfr vap->va_blocksize = fxdr_unsigned(long, fp->fa2_blocksize); 13259336Sdfr vap->va_bytes = fxdr_unsigned(long, fp->fa2_blocks) * NFS_FABLKSIZE; 13269336Sdfr vap->va_fileid = fxdr_unsigned(long, fp->fa2_fileid); 13279336Sdfr fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 13281541Srgrimes vap->va_flags = 0; 132918397Snate vap->va_ctime.tv_sec = fxdr_unsigned(long, fp->fa2_ctime.nfsv2_sec); 133018397Snate vap->va_ctime.tv_nsec = 0; 13319336Sdfr vap->va_gen = fxdr_unsigned(u_long, fp->fa2_ctime.nfsv2_usec); 13321541Srgrimes vap->va_filerev = 0; 13331541Srgrimes } 13341541Srgrimes if (vap->va_size != np->n_size) { 13351541Srgrimes if (vap->va_type == VREG) { 13361541Srgrimes if (np->n_flag & NMODIFIED) { 13371541Srgrimes if (vap->va_size < np->n_size) 13381541Srgrimes vap->va_size = np->n_size; 13391541Srgrimes else 13401541Srgrimes np->n_size = vap->va_size; 13411541Srgrimes } else 13421541Srgrimes np->n_size = vap->va_size; 13431541Srgrimes vnode_pager_setsize(vp, (u_long)np->n_size); 13441541Srgrimes } else 13451541Srgrimes np->n_size = vap->va_size; 13461541Srgrimes } 134734961Sphk np->n_attrstamp = time_second; 13481541Srgrimes if (vaper != NULL) { 13491541Srgrimes bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 13501541Srgrimes if (np->n_flag & NCHG) { 13519336Sdfr if (np->n_flag & NACC) 13529336Sdfr vaper->va_atime = np->n_atim; 13539336Sdfr if (np->n_flag & NUPD) 13549336Sdfr vaper->va_mtime = np->n_mtim; 13551541Srgrimes } 13561541Srgrimes } 13571541Srgrimes return (0); 13581541Srgrimes} 13591541Srgrimes 136036176Speter#ifdef NFS_ACDEBUG 136136176Speter#include <sys/sysctl.h> 136236176Speterstatic int nfs_acdebug; 136336176SpeterSYSCTL_INT(_vfs_nfs, OID_AUTO, acdebug, CTLFLAG_RW, &nfs_acdebug, 0, ""); 136436176Speter#endif 136536176Speter 13661541Srgrimes/* 13671541Srgrimes * Check the time stamp 13681541Srgrimes * If the cache is valid, copy contents to *vap and return 0 13691541Srgrimes * otherwise return an error 13701541Srgrimes */ 13711549Srgrimesint 13721541Srgrimesnfs_getattrcache(vp, vaper) 13731541Srgrimes register struct vnode *vp; 13741541Srgrimes struct vattr *vaper; 13751541Srgrimes{ 137636176Speter register struct nfsnode *np; 13771541Srgrimes register struct vattr *vap; 137836176Speter struct nfsmount *nmp; 137936176Speter int timeo; 13801541Srgrimes 138136176Speter np = VTONFS(vp); 138236176Speter vap = &np->n_vattr; 138336176Speter nmp = VFSTONFS(vp->v_mount); 138436176Speter /* XXX n_mtime doesn't seem to be updated on a miss-and-reload */ 138536176Speter timeo = (time_second - np->n_mtime) / 10; 138636176Speter 138736176Speter#ifdef NFS_ACDEBUG 138836176Speter if (nfs_acdebug>1) 138936176Speter printf("nfs_getattrcache: initial timeo = %d\n", timeo); 139036176Speter#endif 139136176Speter 139236176Speter if (vap->va_type == VDIR) { 139336176Speter if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acdirmin) 139436176Speter timeo = nmp->nm_acdirmin; 139536176Speter else if (timeo > nmp->nm_acdirmax) 139636176Speter timeo = nmp->nm_acdirmax; 139736176Speter } else { 139836176Speter if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acregmin) 139936176Speter timeo = nmp->nm_acregmin; 140036176Speter else if (timeo > nmp->nm_acregmax) 140136176Speter timeo = nmp->nm_acregmax; 140236176Speter } 140336176Speter 140436176Speter#ifdef NFS_ACDEBUG 140536176Speter if (nfs_acdebug > 2) 140636176Speter printf("acregmin %d; acregmax %d; acdirmin %d; acdirmax %d\n", 140736176Speter nmp->nm_acregmin, nmp->nm_acregmax, 140836176Speter nmp->nm_acdirmin, nmp->nm_acdirmax); 140936176Speter 141036176Speter if (nfs_acdebug) 141136176Speter printf("nfs_getattrcache: age = %d; final timeo = %d\n",r 141236176Speter (time_second - np->n_attrstamp), timeo); 141336176Speter#endif 141436176Speter 141536176Speter if ((time_second - np->n_attrstamp) >= timeo) { 14161541Srgrimes nfsstats.attrcache_misses++; 14171541Srgrimes return (ENOENT); 14181541Srgrimes } 14191541Srgrimes nfsstats.attrcache_hits++; 14201541Srgrimes if (vap->va_size != np->n_size) { 14211541Srgrimes if (vap->va_type == VREG) { 14221541Srgrimes if (np->n_flag & NMODIFIED) { 14231541Srgrimes if (vap->va_size < np->n_size) 14241541Srgrimes vap->va_size = np->n_size; 14251541Srgrimes else 14261541Srgrimes np->n_size = vap->va_size; 14271541Srgrimes } else 14281541Srgrimes np->n_size = vap->va_size; 14291541Srgrimes vnode_pager_setsize(vp, (u_long)np->n_size); 14301541Srgrimes } else 14311541Srgrimes np->n_size = vap->va_size; 14321541Srgrimes } 14331541Srgrimes bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr)); 14341541Srgrimes if (np->n_flag & NCHG) { 14359336Sdfr if (np->n_flag & NACC) 14369336Sdfr vaper->va_atime = np->n_atim; 14379336Sdfr if (np->n_flag & NUPD) 14389336Sdfr vaper->va_mtime = np->n_mtim; 14391541Srgrimes } 14401541Srgrimes return (0); 14411541Srgrimes} 14421541Srgrimes 144313416Sphk#ifndef NFS_NOSERVER 14441541Srgrimes/* 144527446Sdfr * Set up nameidata for a lookup() call and do it. 144627446Sdfr * 144727446Sdfr * If pubflag is set, this call is done for a lookup operation on the 144827446Sdfr * public filehandle. In that case we allow crossing mountpoints and 144927446Sdfr * absolute pathnames. However, the caller is expected to check that 145027446Sdfr * the lookup result is within the public fs, and deny access if 145127446Sdfr * it is not. 14521541Srgrimes */ 14531549Srgrimesint 145427446Sdfrnfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag, pubflag) 14551541Srgrimes register struct nameidata *ndp; 14561541Srgrimes fhandle_t *fhp; 14571541Srgrimes int len; 14581541Srgrimes struct nfssvc_sock *slp; 145928270Swollman struct sockaddr *nam; 14601541Srgrimes struct mbuf **mdp; 14611541Srgrimes caddr_t *dposp; 14629336Sdfr struct vnode **retdirp; 14631541Srgrimes struct proc *p; 146427446Sdfr int kerbflag, pubflag; 14651541Srgrimes{ 14661541Srgrimes register int i, rem; 14671541Srgrimes register struct mbuf *md; 146827446Sdfr register char *fromcp, *tocp, *cp; 146927446Sdfr struct iovec aiov; 147027446Sdfr struct uio auio; 14711541Srgrimes struct vnode *dp; 147227446Sdfr int error, rdonly, linklen; 14731541Srgrimes struct componentname *cnp = &ndp->ni_cnd; 14741541Srgrimes 14759336Sdfr *retdirp = (struct vnode *)0; 147629653Sdyson cnp->cn_pnbuf = zalloc(namei_zone); 147729653Sdyson 14781541Srgrimes /* 14791541Srgrimes * Copy the name from the mbuf list to ndp->ni_pnbuf 14801541Srgrimes * and set the various ndp fields appropriately. 14811541Srgrimes */ 14821541Srgrimes fromcp = *dposp; 14831541Srgrimes tocp = cnp->cn_pnbuf; 14841541Srgrimes md = *mdp; 14851541Srgrimes rem = mtod(md, caddr_t) + md->m_len - fromcp; 14861541Srgrimes cnp->cn_hash = 0; 14871541Srgrimes for (i = 0; i < len; i++) { 14881541Srgrimes while (rem == 0) { 14891541Srgrimes md = md->m_next; 14901541Srgrimes if (md == NULL) { 14911541Srgrimes error = EBADRPC; 14921541Srgrimes goto out; 14931541Srgrimes } 14941541Srgrimes fromcp = mtod(md, caddr_t); 14951541Srgrimes rem = md->m_len; 14961541Srgrimes } 149727446Sdfr if (*fromcp == '\0' || (!pubflag && *fromcp == '/')) { 14989336Sdfr error = EACCES; 14991541Srgrimes goto out; 15001541Srgrimes } 15011541Srgrimes cnp->cn_hash += (unsigned char)*fromcp; 15021541Srgrimes *tocp++ = *fromcp++; 15031541Srgrimes rem--; 15041541Srgrimes } 15051541Srgrimes *tocp = '\0'; 15061541Srgrimes *mdp = md; 15071541Srgrimes *dposp = fromcp; 15081541Srgrimes len = nfsm_rndup(len)-len; 15091541Srgrimes if (len > 0) { 15101541Srgrimes if (rem >= len) 15111541Srgrimes *dposp += len; 151227609Sdfr else if ((error = nfs_adv(mdp, dposp, len, rem)) != 0) 15139336Sdfr goto out; 15141541Srgrimes } 151527446Sdfr 15161541Srgrimes /* 15171541Srgrimes * Extract and set starting directory. 15181541Srgrimes */ 151927446Sdfr error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 152027446Sdfr nam, &rdonly, kerbflag, pubflag); 152127446Sdfr if (error) 15221541Srgrimes goto out; 15231541Srgrimes if (dp->v_type != VDIR) { 152417761Sdyson vrele(dp); 15251541Srgrimes error = ENOTDIR; 15261541Srgrimes goto out; 15271541Srgrimes } 152827446Sdfr 152927446Sdfr if (rdonly) 153027446Sdfr cnp->cn_flags |= RDONLY; 153127446Sdfr 153227609Sdfr *retdirp = dp; 153327609Sdfr 153427446Sdfr if (pubflag) { 153527446Sdfr /* 153627446Sdfr * Oh joy. For WebNFS, handle those pesky '%' escapes, 153727446Sdfr * and the 'native path' indicator. 153827446Sdfr */ 153929653Sdyson cp = zalloc(namei_zone); 154027446Sdfr fromcp = cnp->cn_pnbuf; 154127446Sdfr tocp = cp; 154227446Sdfr if ((unsigned char)*fromcp >= WEBNFS_SPECCHAR_START) { 154327446Sdfr switch ((unsigned char)*fromcp) { 154427446Sdfr case WEBNFS_NATIVE_CHAR: 154527446Sdfr /* 154627446Sdfr * 'Native' path for us is the same 154727446Sdfr * as a path according to the NFS spec, 154827446Sdfr * just skip the escape char. 154927446Sdfr */ 155027446Sdfr fromcp++; 155127446Sdfr break; 155227446Sdfr /* 155327446Sdfr * More may be added in the future, range 0x80-0xff 155427446Sdfr */ 155527446Sdfr default: 155627446Sdfr error = EIO; 155729653Sdyson zfree(namei_zone, cp); 155827446Sdfr goto out; 155927446Sdfr } 156027446Sdfr } 156127446Sdfr /* 156227446Sdfr * Translate the '%' escapes, URL-style. 156327446Sdfr */ 156427446Sdfr while (*fromcp != '\0') { 156527446Sdfr if (*fromcp == WEBNFS_ESC_CHAR) { 156627446Sdfr if (fromcp[1] != '\0' && fromcp[2] != '\0') { 156727446Sdfr fromcp++; 156827446Sdfr *tocp++ = HEXSTRTOI(fromcp); 156927446Sdfr fromcp += 2; 157027446Sdfr continue; 157127446Sdfr } else { 157227446Sdfr error = ENOENT; 157329653Sdyson zfree(namei_zone, cp); 157427446Sdfr goto out; 157527446Sdfr } 157627446Sdfr } else 157727446Sdfr *tocp++ = *fromcp++; 157827446Sdfr } 157927446Sdfr *tocp = '\0'; 158029653Sdyson zfree(namei_zone, cnp->cn_pnbuf); 158127446Sdfr cnp->cn_pnbuf = cp; 158227446Sdfr } 158327446Sdfr 158427446Sdfr ndp->ni_pathlen = (tocp - cnp->cn_pnbuf) + 1; 158527446Sdfr ndp->ni_segflg = UIO_SYSSPACE; 158627446Sdfr 158727446Sdfr if (pubflag) { 158827446Sdfr ndp->ni_rootdir = rootvnode; 158927446Sdfr ndp->ni_loopcnt = 0; 159027446Sdfr if (cnp->cn_pnbuf[0] == '/') 159127446Sdfr dp = rootvnode; 159227446Sdfr } else { 159327609Sdfr cnp->cn_flags |= NOCROSSMOUNT; 159427446Sdfr } 159527446Sdfr 159627446Sdfr cnp->cn_proc = p; 15979336Sdfr VREF(dp); 159827446Sdfr 159927609Sdfr for (;;) { 160027446Sdfr cnp->cn_nameptr = cnp->cn_pnbuf; 16011541Srgrimes ndp->ni_startdir = dp; 16021541Srgrimes /* 16031541Srgrimes * And call lookup() to do the real work 16041541Srgrimes */ 160527609Sdfr error = lookup(ndp); 160627609Sdfr if (error) 160727446Sdfr break; 16081541Srgrimes /* 16091541Srgrimes * Check for encountering a symbolic link 16101541Srgrimes */ 161127446Sdfr if ((cnp->cn_flags & ISSYMLINK) == 0) { 161227446Sdfr nfsrv_object_create(ndp->ni_vp); 161327446Sdfr if (cnp->cn_flags & (SAVENAME | SAVESTART)) { 161427446Sdfr cnp->cn_flags |= HASBUF; 161527446Sdfr return (0); 161627446Sdfr } 161727446Sdfr break; 161827446Sdfr } else { 16191541Srgrimes if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 162027446Sdfr VOP_UNLOCK(ndp->ni_dvp, 0, p); 162127446Sdfr if (!pubflag) { 162227446Sdfr vrele(ndp->ni_dvp); 162327446Sdfr vput(ndp->ni_vp); 162427446Sdfr ndp->ni_vp = NULL; 162527446Sdfr error = EINVAL; 162627446Sdfr break; 162727446Sdfr } 162827446Sdfr 162927446Sdfr if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 163027446Sdfr error = ELOOP; 163127446Sdfr break; 163227446Sdfr } 163327609Sdfr if (ndp->ni_pathlen > 1) 163429653Sdyson cp = zalloc(namei_zone); 16351541Srgrimes else 163627446Sdfr cp = cnp->cn_pnbuf; 163727446Sdfr aiov.iov_base = cp; 163827446Sdfr aiov.iov_len = MAXPATHLEN; 163927446Sdfr auio.uio_iov = &aiov; 164027446Sdfr auio.uio_iovcnt = 1; 164127446Sdfr auio.uio_offset = 0; 164227446Sdfr auio.uio_rw = UIO_READ; 164327446Sdfr auio.uio_segflg = UIO_SYSSPACE; 164427446Sdfr auio.uio_procp = (struct proc *)0; 164527446Sdfr auio.uio_resid = MAXPATHLEN; 164627446Sdfr error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 164727446Sdfr if (error) { 164827446Sdfr badlink: 164927446Sdfr if (ndp->ni_pathlen > 1) 165029653Sdyson zfree(namei_zone, cp); 165127446Sdfr break; 165227446Sdfr } 165327446Sdfr linklen = MAXPATHLEN - auio.uio_resid; 165427446Sdfr if (linklen == 0) { 165527446Sdfr error = ENOENT; 165627446Sdfr goto badlink; 165727446Sdfr } 165827446Sdfr if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 165927446Sdfr error = ENAMETOOLONG; 166027446Sdfr goto badlink; 166127446Sdfr } 166227446Sdfr if (ndp->ni_pathlen > 1) { 166327446Sdfr bcopy(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 166429653Sdyson zfree(namei_zone, cnp->cn_pnbuf); 166527446Sdfr cnp->cn_pnbuf = cp; 166627446Sdfr } else 166727446Sdfr cnp->cn_pnbuf[linklen] = '\0'; 166827446Sdfr ndp->ni_pathlen += linklen; 16691541Srgrimes vput(ndp->ni_vp); 167027446Sdfr dp = ndp->ni_dvp; 167127446Sdfr /* 167227446Sdfr * Check if root directory should replace current directory. 167327446Sdfr */ 167427446Sdfr if (cnp->cn_pnbuf[0] == '/') { 167527446Sdfr vrele(dp); 167627446Sdfr dp = ndp->ni_rootdir; 167727446Sdfr VREF(dp); 167827446Sdfr } 16791541Srgrimes } 168027609Sdfr } 16811541Srgrimesout: 168229653Sdyson zfree(namei_zone, cnp->cn_pnbuf); 16831541Srgrimes return (error); 16841541Srgrimes} 16851541Srgrimes 16861541Srgrimes/* 16871541Srgrimes * A fiddled version of m_adj() that ensures null fill to a long 16881541Srgrimes * boundary and only trims off the back end 16891541Srgrimes */ 16901541Srgrimesvoid 16911541Srgrimesnfsm_adj(mp, len, nul) 16921541Srgrimes struct mbuf *mp; 16931541Srgrimes register int len; 16941541Srgrimes int nul; 16951541Srgrimes{ 16961541Srgrimes register struct mbuf *m; 16971541Srgrimes register int count, i; 16981541Srgrimes register char *cp; 16991541Srgrimes 17001541Srgrimes /* 17011541Srgrimes * Trim from tail. Scan the mbuf chain, 17021541Srgrimes * calculating its length and finding the last mbuf. 17031541Srgrimes * If the adjustment only affects this mbuf, then just 17041541Srgrimes * adjust and return. Otherwise, rescan and truncate 17051541Srgrimes * after the remaining size. 17061541Srgrimes */ 17071541Srgrimes count = 0; 17081541Srgrimes m = mp; 17091541Srgrimes for (;;) { 17101541Srgrimes count += m->m_len; 17111541Srgrimes if (m->m_next == (struct mbuf *)0) 17121541Srgrimes break; 17131541Srgrimes m = m->m_next; 17141541Srgrimes } 17151541Srgrimes if (m->m_len > len) { 17161541Srgrimes m->m_len -= len; 17171541Srgrimes if (nul > 0) { 17181541Srgrimes cp = mtod(m, caddr_t)+m->m_len-nul; 17191541Srgrimes for (i = 0; i < nul; i++) 17201541Srgrimes *cp++ = '\0'; 17211541Srgrimes } 17221541Srgrimes return; 17231541Srgrimes } 17241541Srgrimes count -= len; 17251541Srgrimes if (count < 0) 17261541Srgrimes count = 0; 17271541Srgrimes /* 17281541Srgrimes * Correct length for chain is "count". 17291541Srgrimes * Find the mbuf with last data, adjust its length, 17301541Srgrimes * and toss data from remaining mbufs on chain. 17311541Srgrimes */ 17321541Srgrimes for (m = mp; m; m = m->m_next) { 17331541Srgrimes if (m->m_len >= count) { 17341541Srgrimes m->m_len = count; 17351541Srgrimes if (nul > 0) { 17361541Srgrimes cp = mtod(m, caddr_t)+m->m_len-nul; 17371541Srgrimes for (i = 0; i < nul; i++) 17381541Srgrimes *cp++ = '\0'; 17391541Srgrimes } 17401541Srgrimes break; 17411541Srgrimes } 17421541Srgrimes count -= m->m_len; 17431541Srgrimes } 17443305Sphk for (m = m->m_next;m;m = m->m_next) 17451541Srgrimes m->m_len = 0; 17461541Srgrimes} 17471541Srgrimes 17481541Srgrimes/* 17499336Sdfr * Make these functions instead of macros, so that the kernel text size 17509336Sdfr * doesn't get too big... 17519336Sdfr */ 17529336Sdfrvoid 17539336Sdfrnfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 17549336Sdfr struct nfsrv_descript *nfsd; 17559336Sdfr int before_ret; 17569336Sdfr register struct vattr *before_vap; 17579336Sdfr int after_ret; 17589336Sdfr struct vattr *after_vap; 17599336Sdfr struct mbuf **mbp; 17609336Sdfr char **bposp; 17619336Sdfr{ 17629336Sdfr register struct mbuf *mb = *mbp, *mb2; 17639336Sdfr register char *bpos = *bposp; 17649336Sdfr register u_long *tl; 17659336Sdfr 17669336Sdfr if (before_ret) { 17679336Sdfr nfsm_build(tl, u_long *, NFSX_UNSIGNED); 17689336Sdfr *tl = nfs_false; 17699336Sdfr } else { 17709336Sdfr nfsm_build(tl, u_long *, 7 * NFSX_UNSIGNED); 17719336Sdfr *tl++ = nfs_true; 17729336Sdfr txdr_hyper(&(before_vap->va_size), tl); 17739336Sdfr tl += 2; 17749336Sdfr txdr_nfsv3time(&(before_vap->va_mtime), tl); 17759336Sdfr tl += 2; 17769336Sdfr txdr_nfsv3time(&(before_vap->va_ctime), tl); 17779336Sdfr } 17789336Sdfr *bposp = bpos; 17799336Sdfr *mbp = mb; 17809336Sdfr nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 17819336Sdfr} 17829336Sdfr 17839336Sdfrvoid 17849336Sdfrnfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 17859336Sdfr struct nfsrv_descript *nfsd; 17869336Sdfr int after_ret; 17879336Sdfr struct vattr *after_vap; 17889336Sdfr struct mbuf **mbp; 17899336Sdfr char **bposp; 17909336Sdfr{ 17919336Sdfr register struct mbuf *mb = *mbp, *mb2; 17929336Sdfr register char *bpos = *bposp; 17939336Sdfr register u_long *tl; 17949336Sdfr register struct nfs_fattr *fp; 17959336Sdfr 17969336Sdfr if (after_ret) { 17979336Sdfr nfsm_build(tl, u_long *, NFSX_UNSIGNED); 17989336Sdfr *tl = nfs_false; 17999336Sdfr } else { 18009336Sdfr nfsm_build(tl, u_long *, NFSX_UNSIGNED + NFSX_V3FATTR); 18019336Sdfr *tl++ = nfs_true; 18029336Sdfr fp = (struct nfs_fattr *)tl; 18039336Sdfr nfsm_srvfattr(nfsd, after_vap, fp); 18049336Sdfr } 18059336Sdfr *mbp = mb; 18069336Sdfr *bposp = bpos; 18079336Sdfr} 18089336Sdfr 18099336Sdfrvoid 18109336Sdfrnfsm_srvfattr(nfsd, vap, fp) 18119336Sdfr register struct nfsrv_descript *nfsd; 18129336Sdfr register struct vattr *vap; 18139336Sdfr register struct nfs_fattr *fp; 18149336Sdfr{ 18159336Sdfr 18169336Sdfr fp->fa_nlink = txdr_unsigned(vap->va_nlink); 18179336Sdfr fp->fa_uid = txdr_unsigned(vap->va_uid); 18189336Sdfr fp->fa_gid = txdr_unsigned(vap->va_gid); 18199336Sdfr if (nfsd->nd_flag & ND_NFSV3) { 18209336Sdfr fp->fa_type = vtonfsv3_type(vap->va_type); 18219336Sdfr fp->fa_mode = vtonfsv3_mode(vap->va_mode); 18229336Sdfr txdr_hyper(&vap->va_size, &fp->fa3_size); 18239336Sdfr txdr_hyper(&vap->va_bytes, &fp->fa3_used); 18249336Sdfr fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 18259336Sdfr fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 18269336Sdfr fp->fa3_fsid.nfsuquad[0] = 0; 18279336Sdfr fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 18289336Sdfr fp->fa3_fileid.nfsuquad[0] = 0; 18299336Sdfr fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid); 18309336Sdfr txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 18319336Sdfr txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 18329336Sdfr txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 18339336Sdfr } else { 18349336Sdfr fp->fa_type = vtonfsv2_type(vap->va_type); 18359336Sdfr fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 18369336Sdfr fp->fa2_size = txdr_unsigned(vap->va_size); 18379336Sdfr fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 18389336Sdfr if (vap->va_type == VFIFO) 18399336Sdfr fp->fa2_rdev = 0xffffffff; 18409336Sdfr else 18419336Sdfr fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 18429336Sdfr fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 18439336Sdfr fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 18449336Sdfr fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 18459336Sdfr txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 18469336Sdfr txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 18479336Sdfr txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 18489336Sdfr } 18499336Sdfr} 18509336Sdfr 18519336Sdfr/* 18521541Srgrimes * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 18531541Srgrimes * - look up fsid in mount list (if not found ret error) 18541541Srgrimes * - get vp and export rights by calling VFS_FHTOVP() 18551541Srgrimes * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 18561541Srgrimes * - if not lockflag unlock it with VOP_UNLOCK() 18571541Srgrimes */ 18581549Srgrimesint 185927446Sdfrnfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag, pubflag) 18601541Srgrimes fhandle_t *fhp; 18611541Srgrimes int lockflag; 18621541Srgrimes struct vnode **vpp; 18631541Srgrimes struct ucred *cred; 18641541Srgrimes struct nfssvc_sock *slp; 186528270Swollman struct sockaddr *nam; 18661541Srgrimes int *rdonlyp; 18679336Sdfr int kerbflag; 186827446Sdfr int pubflag; 18691541Srgrimes{ 187022521Sdyson struct proc *p = curproc; /* XXX */ 18711541Srgrimes register struct mount *mp; 18721541Srgrimes register int i; 18731541Srgrimes struct ucred *credanon; 18741541Srgrimes int error, exflags; 18751541Srgrimes 18761541Srgrimes *vpp = (struct vnode *)0; 187727446Sdfr 187827446Sdfr if (nfs_ispublicfh(fhp)) { 187927446Sdfr if (!pubflag || !nfs_pub.np_valid) 188027446Sdfr return (ESTALE); 188127446Sdfr fhp = &nfs_pub.np_handle; 188227446Sdfr } 188327446Sdfr 188422521Sdyson mp = vfs_getvfs(&fhp->fh_fsid); 18853305Sphk if (!mp) 18861541Srgrimes return (ESTALE); 18873305Sphk error = VFS_FHTOVP(mp, &fhp->fh_fid, nam, vpp, &exflags, &credanon); 18883305Sphk if (error) 18891541Srgrimes return (error); 18901541Srgrimes /* 18911541Srgrimes * Check/setup credentials. 18921541Srgrimes */ 18931541Srgrimes if (exflags & MNT_EXKERB) { 18949336Sdfr if (!kerbflag) { 18951541Srgrimes vput(*vpp); 18969336Sdfr return (NFSERR_AUTHERR | AUTH_TOOWEAK); 18971541Srgrimes } 18989336Sdfr } else if (kerbflag) { 18999336Sdfr vput(*vpp); 19009336Sdfr return (NFSERR_AUTHERR | AUTH_TOOWEAK); 19011541Srgrimes } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) { 19021541Srgrimes cred->cr_uid = credanon->cr_uid; 19031541Srgrimes for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 19041541Srgrimes cred->cr_groups[i] = credanon->cr_groups[i]; 19053664Sphk cred->cr_ngroups = i; 19061541Srgrimes } 19071541Srgrimes if (exflags & MNT_EXRDONLY) 19081541Srgrimes *rdonlyp = 1; 19091541Srgrimes else 19101541Srgrimes *rdonlyp = 0; 19117969Sdyson 191217761Sdyson nfsrv_object_create(*vpp); 19137969Sdyson 19141541Srgrimes if (!lockflag) 191522521Sdyson VOP_UNLOCK(*vpp, 0, p); 19161541Srgrimes return (0); 19171541Srgrimes} 19181541Srgrimes 191927446Sdfr 192027446Sdfr/* 192127446Sdfr * WebNFS: check if a filehandle is a public filehandle. For v3, this 192227446Sdfr * means a length of 0, for v2 it means all zeroes. nfsm_srvmtofh has 192327446Sdfr * transformed this to all zeroes in both cases, so check for it. 192427446Sdfr */ 192527446Sdfrint 192627446Sdfrnfs_ispublicfh(fhp) 192727446Sdfr fhandle_t *fhp; 192827446Sdfr{ 192927446Sdfr char *cp = (char *)fhp; 193027446Sdfr int i; 193127446Sdfr 193227446Sdfr for (i = 0; i < NFSX_V3FH; i++) 193327446Sdfr if (*cp++ != 0) 193427446Sdfr return (FALSE); 193527446Sdfr return (TRUE); 193627446Sdfr} 193727446Sdfr 193813416Sphk#endif /* NFS_NOSERVER */ 19391541Srgrimes/* 19401541Srgrimes * This function compares two net addresses by family and returns TRUE 19411541Srgrimes * if they are the same host. 19421541Srgrimes * If there is any doubt, return FALSE. 19431541Srgrimes * The AF_INET family is handled as a special case so that address mbufs 19441541Srgrimes * don't need to be saved to store "struct in_addr", which is only 4 bytes. 19451541Srgrimes */ 19461549Srgrimesint 19471541Srgrimesnetaddr_match(family, haddr, nam) 19481541Srgrimes int family; 19491541Srgrimes union nethostaddr *haddr; 195028270Swollman struct sockaddr *nam; 19511541Srgrimes{ 19521541Srgrimes register struct sockaddr_in *inetaddr; 19531541Srgrimes 19541541Srgrimes switch (family) { 19551541Srgrimes case AF_INET: 195628270Swollman inetaddr = (struct sockaddr_in *)nam; 19571541Srgrimes if (inetaddr->sin_family == AF_INET && 19581541Srgrimes inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 19591541Srgrimes return (1); 19601541Srgrimes break; 19611541Srgrimes#ifdef ISO 19621541Srgrimes case AF_ISO: 19631541Srgrimes { 19641541Srgrimes register struct sockaddr_iso *isoaddr1, *isoaddr2; 19651541Srgrimes 196628270Swollman isoaddr1 = (struct sockaddr_iso *)nam; 196728270Swollman isoaddr2 = (struct sockaddr_iso *)haddr->had_nam; 19681541Srgrimes if (isoaddr1->siso_family == AF_ISO && 19691541Srgrimes isoaddr1->siso_nlen > 0 && 19701541Srgrimes isoaddr1->siso_nlen == isoaddr2->siso_nlen && 19711541Srgrimes SAME_ISOADDR(isoaddr1, isoaddr2)) 19721541Srgrimes return (1); 19731541Srgrimes break; 19741541Srgrimes } 19751541Srgrimes#endif /* ISO */ 19761541Srgrimes default: 19771541Srgrimes break; 19781541Srgrimes }; 19791541Srgrimes return (0); 19801541Srgrimes} 19815455Sdg 19829336Sdfrstatic nfsuint64 nfs_nullcookie = { 0, 0 }; 19839336Sdfr/* 19849336Sdfr * This function finds the directory cookie that corresponds to the 19859336Sdfr * logical byte offset given. 19869336Sdfr */ 19879336Sdfrnfsuint64 * 19889336Sdfrnfs_getcookie(np, off, add) 19899336Sdfr register struct nfsnode *np; 19909336Sdfr off_t off; 19919336Sdfr int add; 19929336Sdfr{ 19939336Sdfr register struct nfsdmap *dp, *dp2; 19949336Sdfr register int pos; 19959336Sdfr 19969336Sdfr pos = off / NFS_DIRBLKSIZ; 19979336Sdfr if (pos == 0) { 19989336Sdfr#ifdef DIAGNOSTIC 19999336Sdfr if (add) 20009336Sdfr panic("nfs getcookie add at 0"); 20019336Sdfr#endif 20029336Sdfr return (&nfs_nullcookie); 20039336Sdfr } 20049336Sdfr pos--; 20059336Sdfr dp = np->n_cookies.lh_first; 20069336Sdfr if (!dp) { 20079336Sdfr if (add) { 20089336Sdfr MALLOC(dp, struct nfsdmap *, sizeof (struct nfsdmap), 20099336Sdfr M_NFSDIROFF, M_WAITOK); 20109336Sdfr dp->ndm_eocookie = 0; 20119336Sdfr LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list); 20129336Sdfr } else 20139336Sdfr return ((nfsuint64 *)0); 20149336Sdfr } 20159336Sdfr while (pos >= NFSNUMCOOKIES) { 20169336Sdfr pos -= NFSNUMCOOKIES; 20179336Sdfr if (dp->ndm_list.le_next) { 20189336Sdfr if (!add && dp->ndm_eocookie < NFSNUMCOOKIES && 20199336Sdfr pos >= dp->ndm_eocookie) 20209336Sdfr return ((nfsuint64 *)0); 20219336Sdfr dp = dp->ndm_list.le_next; 20229336Sdfr } else if (add) { 20239336Sdfr MALLOC(dp2, struct nfsdmap *, sizeof (struct nfsdmap), 20249336Sdfr M_NFSDIROFF, M_WAITOK); 20259336Sdfr dp2->ndm_eocookie = 0; 20269336Sdfr LIST_INSERT_AFTER(dp, dp2, ndm_list); 20279336Sdfr dp = dp2; 20289336Sdfr } else 20299336Sdfr return ((nfsuint64 *)0); 20309336Sdfr } 20319336Sdfr if (pos >= dp->ndm_eocookie) { 20329336Sdfr if (add) 20339336Sdfr dp->ndm_eocookie = pos + 1; 20349336Sdfr else 20359336Sdfr return ((nfsuint64 *)0); 20369336Sdfr } 20379336Sdfr return (&dp->ndm_cookies[pos]); 20389336Sdfr} 20399336Sdfr 20409336Sdfr/* 20419336Sdfr * Invalidate cached directory information, except for the actual directory 20429336Sdfr * blocks (which are invalidated separately). 20439336Sdfr * Done mainly to avoid the use of stale offset cookies. 20449336Sdfr */ 20459336Sdfrvoid 20469336Sdfrnfs_invaldir(vp) 20479336Sdfr register struct vnode *vp; 20489336Sdfr{ 20499336Sdfr register struct nfsnode *np = VTONFS(vp); 20509336Sdfr 20519336Sdfr#ifdef DIAGNOSTIC 20529336Sdfr if (vp->v_type != VDIR) 20539336Sdfr panic("nfs: invaldir not dir"); 20549336Sdfr#endif 20559336Sdfr np->n_direofoffset = 0; 20569336Sdfr np->n_cookieverf.nfsuquad[0] = 0; 20579336Sdfr np->n_cookieverf.nfsuquad[1] = 0; 20589336Sdfr if (np->n_cookies.lh_first) 20599336Sdfr np->n_cookies.lh_first->ndm_eocookie = 0; 20609336Sdfr} 20619336Sdfr 20629336Sdfr/* 20639336Sdfr * The write verifier has changed (probably due to a server reboot), so all 20649336Sdfr * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 20659336Sdfr * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 20669336Sdfr * flag. Once done the new write verifier can be set for the mount point. 20679336Sdfr */ 20689336Sdfrvoid 20699336Sdfrnfs_clearcommit(mp) 20709336Sdfr struct mount *mp; 20719336Sdfr{ 20729336Sdfr register struct vnode *vp, *nvp; 20739336Sdfr register struct buf *bp, *nbp; 20749336Sdfr int s; 20759336Sdfr 20769336Sdfr s = splbio(); 20779336Sdfrloop: 20789336Sdfr for (vp = mp->mnt_vnodelist.lh_first; vp; vp = nvp) { 20799336Sdfr if (vp->v_mount != mp) /* Paranoia */ 20809336Sdfr goto loop; 20819336Sdfr nvp = vp->v_mntvnodes.le_next; 20829336Sdfr for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 20839336Sdfr nbp = bp->b_vnbufs.le_next; 20849336Sdfr if ((bp->b_flags & (B_BUSY | B_DELWRI | B_NEEDCOMMIT)) 20859336Sdfr == (B_DELWRI | B_NEEDCOMMIT)) 20869336Sdfr bp->b_flags &= ~B_NEEDCOMMIT; 20879336Sdfr } 20889336Sdfr } 20899336Sdfr splx(s); 20909336Sdfr} 20919336Sdfr 209213416Sphk#ifndef NFS_NOSERVER 20939336Sdfr/* 20949336Sdfr * Map errnos to NFS error numbers. For Version 3 also filter out error 20959336Sdfr * numbers not specified for the associated procedure. 20969336Sdfr */ 20975455Sdgint 20989336Sdfrnfsrv_errmap(nd, err) 20999336Sdfr struct nfsrv_descript *nd; 21009336Sdfr register int err; 21019336Sdfr{ 21029336Sdfr register short *defaulterrp, *errp; 21039336Sdfr 21049336Sdfr if (nd->nd_flag & ND_NFSV3) { 21059336Sdfr if (nd->nd_procnum <= NFSPROC_COMMIT) { 21069336Sdfr errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 21079336Sdfr while (*++errp) { 21089336Sdfr if (*errp == err) 21099336Sdfr return (err); 21109336Sdfr else if (*errp > err) 21119336Sdfr break; 21129336Sdfr } 21139336Sdfr return ((int)*defaulterrp); 21149336Sdfr } else 21159336Sdfr return (err & 0xffff); 21169336Sdfr } 21179336Sdfr if (err <= ELAST) 21189336Sdfr return ((int)nfsrv_v2errmap[err - 1]); 21199336Sdfr return (NFSERR_IO); 21209336Sdfr} 21219336Sdfr 21229336Sdfrint 212331886Sbdenfsrv_object_create(vp) 212431886Sbde struct vnode *vp; 212531886Sbde{ 21265455Sdg 212731886Sbde if (vp == NULL || vp->v_type != VREG) 212831886Sbde return (1); 212931886Sbde return (vfs_object_create(vp, curproc, 213031886Sbde curproc ? curproc->p_ucred : NULL, 1)); 21315455Sdg} 213213416Sphk#endif /* NFS_NOSERVER */ 2133