nfs_srvsubs.c revision 9759
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 379759Sbde * $Id: nfs_subs.c,v 1.21 1995/07/20 09:43:12 davidg 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> 461541Srgrimes#include <sys/proc.h> 471541Srgrimes#include <sys/systm.h> 481541Srgrimes#include <sys/kernel.h> 491541Srgrimes#include <sys/mount.h> 501541Srgrimes#include <sys/vnode.h> 511541Srgrimes#include <sys/namei.h> 521541Srgrimes#include <sys/mbuf.h> 531541Srgrimes#include <sys/socket.h> 541541Srgrimes#include <sys/stat.h> 559336Sdfr#include <sys/malloc.h> 562997Swollman#ifdef VFS_LKM 572997Swollman#include <sys/sysent.h> 582997Swollman#include <sys/syscall.h> 592997Swollman#endif 601541Srgrimes 613305Sphk#include <vm/vm.h> 629507Sdg#include <vm/vnode_pager.h> 633305Sphk 641541Srgrimes#include <nfs/rpcv2.h> 659336Sdfr#include <nfs/nfsproto.h> 661541Srgrimes#include <nfs/nfsnode.h> 671541Srgrimes#include <nfs/nfs.h> 681541Srgrimes#include <nfs/xdr_subs.h> 691541Srgrimes#include <nfs/nfsm_subs.h> 701541Srgrimes#include <nfs/nfsmount.h> 711541Srgrimes#include <nfs/nqnfs.h> 721541Srgrimes#include <nfs/nfsrtt.h> 731541Srgrimes 741541Srgrimes#include <miscfs/specfs/specdev.h> 751541Srgrimes 761541Srgrimes#include <netinet/in.h> 771541Srgrimes#ifdef ISO 781541Srgrimes#include <netiso/iso.h> 791541Srgrimes#endif 801541Srgrimes 811541Srgrimes/* 821541Srgrimes * Data items converted to xdr at startup, since they are constant 831541Srgrimes * This is kinda hokey, but may save a little time doing byte swaps 841541Srgrimes */ 851541Srgrimesu_long nfs_xdrneg1; 861541Srgrimesu_long rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 879336Sdfr rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 881541Srgrimes rpc_auth_kerb; 899336Sdfru_long nfs_prog, nqnfs_prog, nfs_true, nfs_false; 901541Srgrimes 911541Srgrimes/* And other global data */ 921541Srgrimesstatic u_long nfs_xid = 0; 939336Sdfrenum vtype nv2tov_type[8] = { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON }; 949336Sdfrenum vtype nv3tov_type[8]={ VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO }; 959336Sdfrint nfs_ticks; 969336Sdfr 979759Sbdestruct nfs_reqq nfs_reqq; 989759Sbdestruct nfssvc_sockhead nfssvc_sockhead; 999759Sbdeint nfssvc_sockhead_flag; 1009759Sbdestruct nfsd_head nfsd_head; 1019759Sbdeint nfsd_head_flag; 1029759Sbdestruct nfs_bufq nfs_bufq; 1039759Sbdestruct nqtimerhead nqtimerhead; 1049759Sbdestruct nqfhhashhead *nqfhhashtbl; 1059759Sbdeu_long nqfhhash; 1069759Sbde 1079336Sdfr/* 1089336Sdfr * Mapping of old NFS Version 2 RPC numbers to generic numbers. 1099336Sdfr */ 1109336Sdfrint nfsv3_procid[NFS_NPROCS] = { 1119336Sdfr NFSPROC_NULL, 1129336Sdfr NFSPROC_GETATTR, 1139336Sdfr NFSPROC_SETATTR, 1149336Sdfr NFSPROC_NOOP, 1159336Sdfr NFSPROC_LOOKUP, 1169336Sdfr NFSPROC_READLINK, 1179336Sdfr NFSPROC_READ, 1189336Sdfr NFSPROC_NOOP, 1199336Sdfr NFSPROC_WRITE, 1209336Sdfr NFSPROC_CREATE, 1219336Sdfr NFSPROC_REMOVE, 1229336Sdfr NFSPROC_RENAME, 1239336Sdfr NFSPROC_LINK, 1249336Sdfr NFSPROC_SYMLINK, 1259336Sdfr NFSPROC_MKDIR, 1269336Sdfr NFSPROC_RMDIR, 1279336Sdfr NFSPROC_READDIR, 1289336Sdfr NFSPROC_FSSTAT, 1299336Sdfr NFSPROC_NOOP, 1309336Sdfr NFSPROC_NOOP, 1319336Sdfr NFSPROC_NOOP, 1329336Sdfr NFSPROC_NOOP, 1339336Sdfr NFSPROC_NOOP, 1349336Sdfr NFSPROC_NOOP, 1359336Sdfr NFSPROC_NOOP, 1369336Sdfr NFSPROC_NOOP 1379336Sdfr}; 1389336Sdfr 1399336Sdfr/* 1409336Sdfr * and the reverse mapping from generic to Version 2 procedure numbers 1419336Sdfr */ 1429336Sdfrint nfsv2_procid[NFS_NPROCS] = { 1439336Sdfr NFSV2PROC_NULL, 1449336Sdfr NFSV2PROC_GETATTR, 1459336Sdfr NFSV2PROC_SETATTR, 1469336Sdfr NFSV2PROC_LOOKUP, 1479336Sdfr NFSV2PROC_NOOP, 1489336Sdfr NFSV2PROC_READLINK, 1499336Sdfr NFSV2PROC_READ, 1509336Sdfr NFSV2PROC_WRITE, 1519336Sdfr NFSV2PROC_CREATE, 1529336Sdfr NFSV2PROC_MKDIR, 1539336Sdfr NFSV2PROC_SYMLINK, 1549336Sdfr NFSV2PROC_CREATE, 1559336Sdfr NFSV2PROC_REMOVE, 1569336Sdfr NFSV2PROC_RMDIR, 1579336Sdfr NFSV2PROC_RENAME, 1589336Sdfr NFSV2PROC_LINK, 1599336Sdfr NFSV2PROC_READDIR, 1609336Sdfr NFSV2PROC_NOOP, 1619336Sdfr NFSV2PROC_STATFS, 1629336Sdfr NFSV2PROC_NOOP, 1639336Sdfr NFSV2PROC_NOOP, 1649336Sdfr NFSV2PROC_NOOP, 1659336Sdfr NFSV2PROC_NOOP, 1669336Sdfr NFSV2PROC_NOOP, 1679336Sdfr NFSV2PROC_NOOP, 1689336Sdfr NFSV2PROC_NOOP, 1699336Sdfr}; 1709336Sdfr 1719336Sdfr/* 1729336Sdfr * Maps errno values to nfs error numbers. 1739336Sdfr * Use NFSERR_IO as the catch all for ones not specifically defined in 1749336Sdfr * RFC 1094. 1759336Sdfr */ 1769336Sdfrstatic u_char nfsrv_v2errmap[ELAST] = { 1779336Sdfr NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1789336Sdfr NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1799336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 1809336Sdfr NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 1819336Sdfr NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1829336Sdfr NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 1839336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1849336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1859336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1869336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1879336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1889336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1899336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 1909336Sdfr NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 1919336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1929336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1939336Sdfr NFSERR_IO, 1949336Sdfr}; 1959336Sdfr 1969336Sdfr/* 1979336Sdfr * Maps errno values to nfs error numbers. 1989336Sdfr * Although it is not obvious whether or not NFS clients really care if 1999336Sdfr * a returned error value is in the specified list for the procedure, the 2009336Sdfr * safest thing to do is filter them appropriately. For Version 2, the 2019336Sdfr * X/Open XNFS document is the only specification that defines error values 2029336Sdfr * for each RPC (The RFC simply lists all possible error values for all RPCs), 2039336Sdfr * so I have decided to not do this for Version 2. 2049336Sdfr * The first entry is the default error return and the rest are the valid 2059336Sdfr * errors for that RPC in increasing numeric order. 2069336Sdfr */ 2079336Sdfrstatic short nfsv3err_null[] = { 2089336Sdfr 0, 2099336Sdfr 0, 2109336Sdfr}; 2119336Sdfr 2129336Sdfrstatic short nfsv3err_getattr[] = { 2139336Sdfr NFSERR_IO, 2149336Sdfr NFSERR_IO, 2159336Sdfr NFSERR_STALE, 2169336Sdfr NFSERR_BADHANDLE, 2179336Sdfr NFSERR_SERVERFAULT, 2189336Sdfr 0, 2199336Sdfr}; 2209336Sdfr 2219336Sdfrstatic short nfsv3err_setattr[] = { 2229336Sdfr NFSERR_IO, 2239336Sdfr NFSERR_PERM, 2249336Sdfr NFSERR_IO, 2259336Sdfr NFSERR_ACCES, 2269336Sdfr NFSERR_INVAL, 2279336Sdfr NFSERR_NOSPC, 2289336Sdfr NFSERR_ROFS, 2299336Sdfr NFSERR_DQUOT, 2309336Sdfr NFSERR_STALE, 2319336Sdfr NFSERR_BADHANDLE, 2329336Sdfr NFSERR_NOT_SYNC, 2339336Sdfr NFSERR_SERVERFAULT, 2349336Sdfr 0, 2359336Sdfr}; 2369336Sdfr 2379336Sdfrstatic short nfsv3err_lookup[] = { 2389336Sdfr NFSERR_IO, 2399336Sdfr NFSERR_NOENT, 2409336Sdfr NFSERR_IO, 2419336Sdfr NFSERR_ACCES, 2429336Sdfr NFSERR_NOTDIR, 2439336Sdfr NFSERR_NAMETOL, 2449336Sdfr NFSERR_STALE, 2459336Sdfr NFSERR_BADHANDLE, 2469336Sdfr NFSERR_SERVERFAULT, 2479336Sdfr 0, 2489336Sdfr}; 2499336Sdfr 2509336Sdfrstatic short nfsv3err_access[] = { 2519336Sdfr NFSERR_IO, 2529336Sdfr NFSERR_IO, 2539336Sdfr NFSERR_STALE, 2549336Sdfr NFSERR_BADHANDLE, 2559336Sdfr NFSERR_SERVERFAULT, 2569336Sdfr 0, 2579336Sdfr}; 2589336Sdfr 2599336Sdfrstatic short nfsv3err_readlink[] = { 2609336Sdfr NFSERR_IO, 2619336Sdfr NFSERR_IO, 2629336Sdfr NFSERR_ACCES, 2639336Sdfr NFSERR_INVAL, 2649336Sdfr NFSERR_STALE, 2659336Sdfr NFSERR_BADHANDLE, 2669336Sdfr NFSERR_NOTSUPP, 2679336Sdfr NFSERR_SERVERFAULT, 2689336Sdfr 0, 2699336Sdfr}; 2709336Sdfr 2719336Sdfrstatic short nfsv3err_read[] = { 2729336Sdfr NFSERR_IO, 2739336Sdfr NFSERR_IO, 2749336Sdfr NFSERR_NXIO, 2759336Sdfr NFSERR_ACCES, 2769336Sdfr NFSERR_INVAL, 2779336Sdfr NFSERR_STALE, 2789336Sdfr NFSERR_BADHANDLE, 2799336Sdfr NFSERR_SERVERFAULT, 2809336Sdfr 0, 2819336Sdfr}; 2829336Sdfr 2839336Sdfrstatic short nfsv3err_write[] = { 2849336Sdfr NFSERR_IO, 2859336Sdfr NFSERR_IO, 2869336Sdfr NFSERR_ACCES, 2879336Sdfr NFSERR_INVAL, 2889336Sdfr NFSERR_FBIG, 2899336Sdfr NFSERR_NOSPC, 2909336Sdfr NFSERR_ROFS, 2919336Sdfr NFSERR_DQUOT, 2929336Sdfr NFSERR_STALE, 2939336Sdfr NFSERR_BADHANDLE, 2949336Sdfr NFSERR_SERVERFAULT, 2959336Sdfr 0, 2969336Sdfr}; 2979336Sdfr 2989336Sdfrstatic short nfsv3err_create[] = { 2999336Sdfr NFSERR_IO, 3009336Sdfr NFSERR_IO, 3019336Sdfr NFSERR_ACCES, 3029336Sdfr NFSERR_EXIST, 3039336Sdfr NFSERR_NOTDIR, 3049336Sdfr NFSERR_NOSPC, 3059336Sdfr NFSERR_ROFS, 3069336Sdfr NFSERR_NAMETOL, 3079336Sdfr NFSERR_DQUOT, 3089336Sdfr NFSERR_STALE, 3099336Sdfr NFSERR_BADHANDLE, 3109336Sdfr NFSERR_NOTSUPP, 3119336Sdfr NFSERR_SERVERFAULT, 3129336Sdfr 0, 3139336Sdfr}; 3149336Sdfr 3159336Sdfrstatic short nfsv3err_mkdir[] = { 3169336Sdfr NFSERR_IO, 3179336Sdfr NFSERR_IO, 3189336Sdfr NFSERR_ACCES, 3199336Sdfr NFSERR_EXIST, 3209336Sdfr NFSERR_NOTDIR, 3219336Sdfr NFSERR_NOSPC, 3229336Sdfr NFSERR_ROFS, 3239336Sdfr NFSERR_NAMETOL, 3249336Sdfr NFSERR_DQUOT, 3259336Sdfr NFSERR_STALE, 3269336Sdfr NFSERR_BADHANDLE, 3279336Sdfr NFSERR_NOTSUPP, 3289336Sdfr NFSERR_SERVERFAULT, 3299336Sdfr 0, 3309336Sdfr}; 3319336Sdfr 3329336Sdfrstatic short nfsv3err_symlink[] = { 3339336Sdfr NFSERR_IO, 3349336Sdfr NFSERR_IO, 3359336Sdfr NFSERR_ACCES, 3369336Sdfr NFSERR_EXIST, 3379336Sdfr NFSERR_NOTDIR, 3389336Sdfr NFSERR_NOSPC, 3399336Sdfr NFSERR_ROFS, 3409336Sdfr NFSERR_NAMETOL, 3419336Sdfr NFSERR_DQUOT, 3429336Sdfr NFSERR_STALE, 3439336Sdfr NFSERR_BADHANDLE, 3449336Sdfr NFSERR_NOTSUPP, 3459336Sdfr NFSERR_SERVERFAULT, 3469336Sdfr 0, 3479336Sdfr}; 3489336Sdfr 3499336Sdfrstatic short nfsv3err_mknod[] = { 3509336Sdfr NFSERR_IO, 3519336Sdfr NFSERR_IO, 3529336Sdfr NFSERR_ACCES, 3539336Sdfr NFSERR_EXIST, 3549336Sdfr NFSERR_NOTDIR, 3559336Sdfr NFSERR_NOSPC, 3569336Sdfr NFSERR_ROFS, 3579336Sdfr NFSERR_NAMETOL, 3589336Sdfr NFSERR_DQUOT, 3599336Sdfr NFSERR_STALE, 3609336Sdfr NFSERR_BADHANDLE, 3619336Sdfr NFSERR_NOTSUPP, 3629336Sdfr NFSERR_SERVERFAULT, 3639336Sdfr NFSERR_BADTYPE, 3649336Sdfr 0, 3659336Sdfr}; 3669336Sdfr 3679336Sdfrstatic short nfsv3err_remove[] = { 3689336Sdfr NFSERR_IO, 3699336Sdfr NFSERR_NOENT, 3709336Sdfr NFSERR_IO, 3719336Sdfr NFSERR_ACCES, 3729336Sdfr NFSERR_NOTDIR, 3739336Sdfr NFSERR_ROFS, 3749336Sdfr NFSERR_NAMETOL, 3759336Sdfr NFSERR_STALE, 3769336Sdfr NFSERR_BADHANDLE, 3779336Sdfr NFSERR_SERVERFAULT, 3789336Sdfr 0, 3799336Sdfr}; 3809336Sdfr 3819336Sdfrstatic short nfsv3err_rmdir[] = { 3829336Sdfr NFSERR_IO, 3839336Sdfr NFSERR_NOENT, 3849336Sdfr NFSERR_IO, 3859336Sdfr NFSERR_ACCES, 3869336Sdfr NFSERR_EXIST, 3879336Sdfr NFSERR_NOTDIR, 3889336Sdfr NFSERR_INVAL, 3899336Sdfr NFSERR_ROFS, 3909336Sdfr NFSERR_NAMETOL, 3919336Sdfr NFSERR_NOTEMPTY, 3929336Sdfr NFSERR_STALE, 3939336Sdfr NFSERR_BADHANDLE, 3949336Sdfr NFSERR_NOTSUPP, 3959336Sdfr NFSERR_SERVERFAULT, 3969336Sdfr 0, 3979336Sdfr}; 3989336Sdfr 3999336Sdfrstatic short nfsv3err_rename[] = { 4009336Sdfr NFSERR_IO, 4019336Sdfr NFSERR_NOENT, 4029336Sdfr NFSERR_IO, 4039336Sdfr NFSERR_ACCES, 4049336Sdfr NFSERR_EXIST, 4059336Sdfr NFSERR_XDEV, 4069336Sdfr NFSERR_NOTDIR, 4079336Sdfr NFSERR_ISDIR, 4089336Sdfr NFSERR_INVAL, 4099336Sdfr NFSERR_NOSPC, 4109336Sdfr NFSERR_ROFS, 4119336Sdfr NFSERR_MLINK, 4129336Sdfr NFSERR_NAMETOL, 4139336Sdfr NFSERR_NOTEMPTY, 4149336Sdfr NFSERR_DQUOT, 4159336Sdfr NFSERR_STALE, 4169336Sdfr NFSERR_BADHANDLE, 4179336Sdfr NFSERR_NOTSUPP, 4189336Sdfr NFSERR_SERVERFAULT, 4199336Sdfr 0, 4209336Sdfr}; 4219336Sdfr 4229336Sdfrstatic short nfsv3err_link[] = { 4239336Sdfr NFSERR_IO, 4249336Sdfr NFSERR_IO, 4259336Sdfr NFSERR_ACCES, 4269336Sdfr NFSERR_EXIST, 4279336Sdfr NFSERR_XDEV, 4289336Sdfr NFSERR_NOTDIR, 4299336Sdfr NFSERR_INVAL, 4309336Sdfr NFSERR_NOSPC, 4319336Sdfr NFSERR_ROFS, 4329336Sdfr NFSERR_MLINK, 4339336Sdfr NFSERR_NAMETOL, 4349336Sdfr NFSERR_DQUOT, 4359336Sdfr NFSERR_STALE, 4369336Sdfr NFSERR_BADHANDLE, 4379336Sdfr NFSERR_NOTSUPP, 4389336Sdfr NFSERR_SERVERFAULT, 4399336Sdfr 0, 4409336Sdfr}; 4419336Sdfr 4429336Sdfrstatic short nfsv3err_readdir[] = { 4439336Sdfr NFSERR_IO, 4449336Sdfr NFSERR_IO, 4459336Sdfr NFSERR_ACCES, 4469336Sdfr NFSERR_NOTDIR, 4479336Sdfr NFSERR_STALE, 4489336Sdfr NFSERR_BADHANDLE, 4499336Sdfr NFSERR_BAD_COOKIE, 4509336Sdfr NFSERR_TOOSMALL, 4519336Sdfr NFSERR_SERVERFAULT, 4529336Sdfr 0, 4539336Sdfr}; 4549336Sdfr 4559336Sdfrstatic short nfsv3err_readdirplus[] = { 4569336Sdfr NFSERR_IO, 4579336Sdfr NFSERR_IO, 4589336Sdfr NFSERR_ACCES, 4599336Sdfr NFSERR_NOTDIR, 4609336Sdfr NFSERR_STALE, 4619336Sdfr NFSERR_BADHANDLE, 4629336Sdfr NFSERR_BAD_COOKIE, 4639336Sdfr NFSERR_NOTSUPP, 4649336Sdfr NFSERR_TOOSMALL, 4659336Sdfr NFSERR_SERVERFAULT, 4669336Sdfr 0, 4679336Sdfr}; 4689336Sdfr 4699336Sdfrstatic short nfsv3err_fsstat[] = { 4709336Sdfr NFSERR_IO, 4719336Sdfr NFSERR_IO, 4729336Sdfr NFSERR_STALE, 4739336Sdfr NFSERR_BADHANDLE, 4749336Sdfr NFSERR_SERVERFAULT, 4759336Sdfr 0, 4769336Sdfr}; 4779336Sdfr 4789336Sdfrstatic short nfsv3err_fsinfo[] = { 4799336Sdfr NFSERR_STALE, 4809336Sdfr NFSERR_STALE, 4819336Sdfr NFSERR_BADHANDLE, 4829336Sdfr NFSERR_SERVERFAULT, 4839336Sdfr 0, 4849336Sdfr}; 4859336Sdfr 4869336Sdfrstatic short nfsv3err_pathconf[] = { 4879336Sdfr NFSERR_STALE, 4889336Sdfr NFSERR_STALE, 4899336Sdfr NFSERR_BADHANDLE, 4909336Sdfr NFSERR_SERVERFAULT, 4919336Sdfr 0, 4929336Sdfr}; 4939336Sdfr 4949336Sdfrstatic short nfsv3err_commit[] = { 4959336Sdfr NFSERR_IO, 4969336Sdfr NFSERR_IO, 4979336Sdfr NFSERR_STALE, 4989336Sdfr NFSERR_BADHANDLE, 4999336Sdfr NFSERR_SERVERFAULT, 5009336Sdfr 0, 5019336Sdfr}; 5029336Sdfr 5039336Sdfrstatic short *nfsrv_v3errmap[] = { 5049336Sdfr nfsv3err_null, 5059336Sdfr nfsv3err_getattr, 5069336Sdfr nfsv3err_setattr, 5079336Sdfr nfsv3err_lookup, 5089336Sdfr nfsv3err_access, 5099336Sdfr nfsv3err_readlink, 5109336Sdfr nfsv3err_read, 5119336Sdfr nfsv3err_write, 5129336Sdfr nfsv3err_create, 5139336Sdfr nfsv3err_mkdir, 5149336Sdfr nfsv3err_symlink, 5159336Sdfr nfsv3err_mknod, 5169336Sdfr nfsv3err_remove, 5179336Sdfr nfsv3err_rmdir, 5189336Sdfr nfsv3err_rename, 5199336Sdfr nfsv3err_link, 5209336Sdfr nfsv3err_readdir, 5219336Sdfr nfsv3err_readdirplus, 5229336Sdfr nfsv3err_fsstat, 5239336Sdfr nfsv3err_fsinfo, 5249336Sdfr nfsv3err_pathconf, 5259336Sdfr nfsv3err_commit, 5269336Sdfr}; 5279336Sdfr 5281541Srgrimesextern struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON]; 5291541Srgrimesextern struct nfsrtt nfsrtt; 5301541Srgrimesextern time_t nqnfsstarttime; 5311541Srgrimesextern int nqsrv_clockskew; 5321541Srgrimesextern int nqsrv_writeslack; 5331541Srgrimesextern int nqsrv_maxlease; 5349336Sdfrextern struct nfsstats nfsstats; 5359336Sdfrextern int nqnfs_piggy[NFS_NPROCS]; 5369336Sdfrextern nfstype nfsv2_type[9]; 5379336Sdfrextern nfstype nfsv3_type[9]; 5389336Sdfrextern struct nfsnodehashhead *nfsnodehashtbl; 5399336Sdfrextern u_long nfsnodehash; 5401541Srgrimes 5412997Swollman#ifdef VFS_LKM 5422997Swollmanstruct getfh_args; 5432997Swollmanextern int getfh(struct proc *, struct getfh_args *, int *); 5442997Swollmanstruct nfssvc_args; 5452997Swollmanextern int nfssvc(struct proc *, struct nfssvc_args *, int *); 5462997Swollman#endif 5472997Swollman 5483664SphkLIST_HEAD(nfsnodehashhead, nfsnode); 5493664Sphk 5501541Srgrimes/* 5511541Srgrimes * Create the header for an rpc request packet 5521541Srgrimes * The hsiz is the size of the rest of the nfs request header. 5531541Srgrimes * (just used to decide if a cluster is a good idea) 5541541Srgrimes */ 5551541Srgrimesstruct mbuf * 5561541Srgrimesnfsm_reqh(vp, procid, hsiz, bposp) 5571541Srgrimes struct vnode *vp; 5581541Srgrimes u_long procid; 5591541Srgrimes int hsiz; 5601541Srgrimes caddr_t *bposp; 5611541Srgrimes{ 5621541Srgrimes register struct mbuf *mb; 5631541Srgrimes register u_long *tl; 5641541Srgrimes register caddr_t bpos; 5651541Srgrimes struct mbuf *mb2; 5661541Srgrimes struct nfsmount *nmp; 5671541Srgrimes int nqflag; 5681541Srgrimes 5691541Srgrimes MGET(mb, M_WAIT, MT_DATA); 5701541Srgrimes if (hsiz >= MINCLSIZE) 5711541Srgrimes MCLGET(mb, M_WAIT); 5721541Srgrimes mb->m_len = 0; 5731541Srgrimes bpos = mtod(mb, caddr_t); 5748876Srgrimes 5751541Srgrimes /* 5761541Srgrimes * For NQNFS, add lease request. 5771541Srgrimes */ 5781541Srgrimes if (vp) { 5791541Srgrimes nmp = VFSTONFS(vp->v_mount); 5801541Srgrimes if (nmp->nm_flag & NFSMNT_NQNFS) { 5811541Srgrimes nqflag = NQNFS_NEEDLEASE(vp, procid); 5821541Srgrimes if (nqflag) { 5831541Srgrimes nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); 5841541Srgrimes *tl++ = txdr_unsigned(nqflag); 5851541Srgrimes *tl = txdr_unsigned(nmp->nm_leaseterm); 5861541Srgrimes } else { 5871541Srgrimes nfsm_build(tl, u_long *, NFSX_UNSIGNED); 5881541Srgrimes *tl = 0; 5891541Srgrimes } 5901541Srgrimes } 5911541Srgrimes } 5921541Srgrimes /* Finally, return values */ 5931541Srgrimes *bposp = bpos; 5941541Srgrimes return (mb); 5951541Srgrimes} 5961541Srgrimes 5971541Srgrimes/* 5981541Srgrimes * Build the RPC header and fill in the authorization info. 5991541Srgrimes * The authorization string argument is only used when the credentials 6001541Srgrimes * come from outside of the kernel. 6011541Srgrimes * Returns the head of the mbuf list. 6021541Srgrimes */ 6031541Srgrimesstruct mbuf * 6049336Sdfrnfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 6059336Sdfr verf_str, mrest, mrest_len, mbp, xidp) 6061541Srgrimes register struct ucred *cr; 6079336Sdfr int nmflag; 6081541Srgrimes int procid; 6091541Srgrimes int auth_type; 6101541Srgrimes int auth_len; 6111541Srgrimes char *auth_str; 6129336Sdfr int verf_len; 6139336Sdfr char *verf_str; 6141541Srgrimes struct mbuf *mrest; 6151541Srgrimes int mrest_len; 6161541Srgrimes struct mbuf **mbp; 6171541Srgrimes u_long *xidp; 6181541Srgrimes{ 6191541Srgrimes register struct mbuf *mb; 6201541Srgrimes register u_long *tl; 6211541Srgrimes register caddr_t bpos; 6221541Srgrimes register int i; 6231541Srgrimes struct mbuf *mreq, *mb2; 6241541Srgrimes int siz, grpsiz, authsiz; 6251541Srgrimes 6261541Srgrimes authsiz = nfsm_rndup(auth_len); 6271541Srgrimes MGETHDR(mb, M_WAIT, MT_DATA); 6289336Sdfr if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 6291541Srgrimes MCLGET(mb, M_WAIT); 6309336Sdfr } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 6319336Sdfr MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 6321541Srgrimes } else { 6339336Sdfr MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 6341541Srgrimes } 6351541Srgrimes mb->m_len = 0; 6361541Srgrimes mreq = mb; 6371541Srgrimes bpos = mtod(mb, caddr_t); 6381541Srgrimes 6391541Srgrimes /* 6401541Srgrimes * First the RPC header. 6411541Srgrimes */ 6429336Sdfr nfsm_build(tl, u_long *, 8 * NFSX_UNSIGNED); 6431541Srgrimes if (++nfs_xid == 0) 6441541Srgrimes nfs_xid++; 6451541Srgrimes *tl++ = *xidp = txdr_unsigned(nfs_xid); 6461541Srgrimes *tl++ = rpc_call; 6471541Srgrimes *tl++ = rpc_vers; 6489336Sdfr if (nmflag & NFSMNT_NQNFS) { 6491541Srgrimes *tl++ = txdr_unsigned(NQNFS_PROG); 6509336Sdfr *tl++ = txdr_unsigned(NQNFS_VER3); 6511541Srgrimes } else { 6521541Srgrimes *tl++ = txdr_unsigned(NFS_PROG); 6539336Sdfr if (nmflag & NFSMNT_NFSV3) 6549336Sdfr *tl++ = txdr_unsigned(NFS_VER3); 6559336Sdfr else 6569336Sdfr *tl++ = txdr_unsigned(NFS_VER2); 6571541Srgrimes } 6589336Sdfr if (nmflag & NFSMNT_NFSV3) 6599336Sdfr *tl++ = txdr_unsigned(procid); 6609336Sdfr else 6619336Sdfr *tl++ = txdr_unsigned(nfsv2_procid[procid]); 6621541Srgrimes 6631541Srgrimes /* 6641541Srgrimes * And then the authorization cred. 6651541Srgrimes */ 6661541Srgrimes *tl++ = txdr_unsigned(auth_type); 6671541Srgrimes *tl = txdr_unsigned(authsiz); 6681541Srgrimes switch (auth_type) { 6691541Srgrimes case RPCAUTH_UNIX: 6701541Srgrimes nfsm_build(tl, u_long *, auth_len); 6711541Srgrimes *tl++ = 0; /* stamp ?? */ 6721541Srgrimes *tl++ = 0; /* NULL hostname */ 6731541Srgrimes *tl++ = txdr_unsigned(cr->cr_uid); 6741541Srgrimes *tl++ = txdr_unsigned(cr->cr_groups[0]); 6751541Srgrimes grpsiz = (auth_len >> 2) - 5; 6761541Srgrimes *tl++ = txdr_unsigned(grpsiz); 6771541Srgrimes for (i = 1; i <= grpsiz; i++) 6781541Srgrimes *tl++ = txdr_unsigned(cr->cr_groups[i]); 6791541Srgrimes break; 6809336Sdfr case RPCAUTH_KERB4: 6811541Srgrimes siz = auth_len; 6821541Srgrimes while (siz > 0) { 6831541Srgrimes if (M_TRAILINGSPACE(mb) == 0) { 6841541Srgrimes MGET(mb2, M_WAIT, MT_DATA); 6851541Srgrimes if (siz >= MINCLSIZE) 6861541Srgrimes MCLGET(mb2, M_WAIT); 6871541Srgrimes mb->m_next = mb2; 6881541Srgrimes mb = mb2; 6891541Srgrimes mb->m_len = 0; 6901541Srgrimes bpos = mtod(mb, caddr_t); 6911541Srgrimes } 6921541Srgrimes i = min(siz, M_TRAILINGSPACE(mb)); 6931541Srgrimes bcopy(auth_str, bpos, i); 6941541Srgrimes mb->m_len += i; 6951541Srgrimes auth_str += i; 6961541Srgrimes bpos += i; 6971541Srgrimes siz -= i; 6981541Srgrimes } 6991541Srgrimes if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 7001541Srgrimes for (i = 0; i < siz; i++) 7011541Srgrimes *bpos++ = '\0'; 7021541Srgrimes mb->m_len += siz; 7031541Srgrimes } 7041541Srgrimes break; 7051541Srgrimes }; 7069336Sdfr 7079336Sdfr /* 7089336Sdfr * And the verifier... 7099336Sdfr */ 7109336Sdfr nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); 7119336Sdfr if (verf_str) { 7129336Sdfr *tl++ = txdr_unsigned(RPCAUTH_KERB4); 7139336Sdfr *tl = txdr_unsigned(verf_len); 7149336Sdfr siz = verf_len; 7159336Sdfr while (siz > 0) { 7169336Sdfr if (M_TRAILINGSPACE(mb) == 0) { 7179336Sdfr MGET(mb2, M_WAIT, MT_DATA); 7189336Sdfr if (siz >= MINCLSIZE) 7199336Sdfr MCLGET(mb2, M_WAIT); 7209336Sdfr mb->m_next = mb2; 7219336Sdfr mb = mb2; 7229336Sdfr mb->m_len = 0; 7239336Sdfr bpos = mtod(mb, caddr_t); 7249336Sdfr } 7259336Sdfr i = min(siz, M_TRAILINGSPACE(mb)); 7269336Sdfr bcopy(verf_str, bpos, i); 7279336Sdfr mb->m_len += i; 7289336Sdfr verf_str += i; 7299336Sdfr bpos += i; 7309336Sdfr siz -= i; 7319336Sdfr } 7329336Sdfr if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 7339336Sdfr for (i = 0; i < siz; i++) 7349336Sdfr *bpos++ = '\0'; 7359336Sdfr mb->m_len += siz; 7369336Sdfr } 7379336Sdfr } else { 7389336Sdfr *tl++ = txdr_unsigned(RPCAUTH_NULL); 7399336Sdfr *tl = 0; 7409336Sdfr } 7411541Srgrimes mb->m_next = mrest; 7429336Sdfr mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 7431541Srgrimes mreq->m_pkthdr.rcvif = (struct ifnet *)0; 7441541Srgrimes *mbp = mb; 7451541Srgrimes return (mreq); 7461541Srgrimes} 7471541Srgrimes 7481541Srgrimes/* 7491541Srgrimes * copies mbuf chain to the uio scatter/gather list 7501541Srgrimes */ 7511549Srgrimesint 7521541Srgrimesnfsm_mbuftouio(mrep, uiop, siz, dpos) 7531541Srgrimes struct mbuf **mrep; 7541541Srgrimes register struct uio *uiop; 7551541Srgrimes int siz; 7561541Srgrimes caddr_t *dpos; 7571541Srgrimes{ 7581541Srgrimes register char *mbufcp, *uiocp; 7591541Srgrimes register int xfer, left, len; 7601541Srgrimes register struct mbuf *mp; 7611541Srgrimes long uiosiz, rem; 7621541Srgrimes int error = 0; 7631541Srgrimes 7641541Srgrimes mp = *mrep; 7651541Srgrimes mbufcp = *dpos; 7661541Srgrimes len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 7671541Srgrimes rem = nfsm_rndup(siz)-siz; 7681541Srgrimes while (siz > 0) { 7691541Srgrimes if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 7701541Srgrimes return (EFBIG); 7711541Srgrimes left = uiop->uio_iov->iov_len; 7721541Srgrimes uiocp = uiop->uio_iov->iov_base; 7731541Srgrimes if (left > siz) 7741541Srgrimes left = siz; 7751541Srgrimes uiosiz = left; 7761541Srgrimes while (left > 0) { 7771541Srgrimes while (len == 0) { 7781541Srgrimes mp = mp->m_next; 7791541Srgrimes if (mp == NULL) 7801541Srgrimes return (EBADRPC); 7811541Srgrimes mbufcp = mtod(mp, caddr_t); 7821541Srgrimes len = mp->m_len; 7831541Srgrimes } 7841541Srgrimes xfer = (left > len) ? len : left; 7851541Srgrimes#ifdef notdef 7861541Srgrimes /* Not Yet.. */ 7871541Srgrimes if (uiop->uio_iov->iov_op != NULL) 7881541Srgrimes (*(uiop->uio_iov->iov_op)) 7891541Srgrimes (mbufcp, uiocp, xfer); 7901541Srgrimes else 7911541Srgrimes#endif 7921541Srgrimes if (uiop->uio_segflg == UIO_SYSSPACE) 7931541Srgrimes bcopy(mbufcp, uiocp, xfer); 7941541Srgrimes else 7951541Srgrimes copyout(mbufcp, uiocp, xfer); 7961541Srgrimes left -= xfer; 7971541Srgrimes len -= xfer; 7981541Srgrimes mbufcp += xfer; 7991541Srgrimes uiocp += xfer; 8001541Srgrimes uiop->uio_offset += xfer; 8011541Srgrimes uiop->uio_resid -= xfer; 8021541Srgrimes } 8031541Srgrimes if (uiop->uio_iov->iov_len <= siz) { 8041541Srgrimes uiop->uio_iovcnt--; 8051541Srgrimes uiop->uio_iov++; 8061541Srgrimes } else { 8071541Srgrimes uiop->uio_iov->iov_base += uiosiz; 8081541Srgrimes uiop->uio_iov->iov_len -= uiosiz; 8091541Srgrimes } 8101541Srgrimes siz -= uiosiz; 8111541Srgrimes } 8121541Srgrimes *dpos = mbufcp; 8131541Srgrimes *mrep = mp; 8141541Srgrimes if (rem > 0) { 8151541Srgrimes if (len < rem) 8161541Srgrimes error = nfs_adv(mrep, dpos, rem, len); 8171541Srgrimes else 8181541Srgrimes *dpos += rem; 8191541Srgrimes } 8201541Srgrimes return (error); 8211541Srgrimes} 8221541Srgrimes 8231541Srgrimes/* 8241541Srgrimes * copies a uio scatter/gather list to an mbuf chain... 8251541Srgrimes */ 8261549Srgrimesint 8271541Srgrimesnfsm_uiotombuf(uiop, mq, siz, bpos) 8281541Srgrimes register struct uio *uiop; 8291541Srgrimes struct mbuf **mq; 8301541Srgrimes int siz; 8311541Srgrimes caddr_t *bpos; 8321541Srgrimes{ 8331541Srgrimes register char *uiocp; 8341541Srgrimes register struct mbuf *mp, *mp2; 8351541Srgrimes register int xfer, left, mlen; 8361541Srgrimes int uiosiz, clflg, rem; 8371541Srgrimes char *cp; 8381541Srgrimes 8391541Srgrimes if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 8401541Srgrimes clflg = 1; 8411541Srgrimes else 8421541Srgrimes clflg = 0; 8431541Srgrimes rem = nfsm_rndup(siz)-siz; 8441541Srgrimes mp = mp2 = *mq; 8451541Srgrimes while (siz > 0) { 8461541Srgrimes if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 8471541Srgrimes return (EINVAL); 8481541Srgrimes left = uiop->uio_iov->iov_len; 8491541Srgrimes uiocp = uiop->uio_iov->iov_base; 8501541Srgrimes if (left > siz) 8511541Srgrimes left = siz; 8521541Srgrimes uiosiz = left; 8531541Srgrimes while (left > 0) { 8541541Srgrimes mlen = M_TRAILINGSPACE(mp); 8551541Srgrimes if (mlen == 0) { 8561541Srgrimes MGET(mp, M_WAIT, MT_DATA); 8571541Srgrimes if (clflg) 8581541Srgrimes MCLGET(mp, M_WAIT); 8591541Srgrimes mp->m_len = 0; 8601541Srgrimes mp2->m_next = mp; 8611541Srgrimes mp2 = mp; 8621541Srgrimes mlen = M_TRAILINGSPACE(mp); 8631541Srgrimes } 8641541Srgrimes xfer = (left > mlen) ? mlen : left; 8651541Srgrimes#ifdef notdef 8661541Srgrimes /* Not Yet.. */ 8671541Srgrimes if (uiop->uio_iov->iov_op != NULL) 8681541Srgrimes (*(uiop->uio_iov->iov_op)) 8691541Srgrimes (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 8701541Srgrimes else 8711541Srgrimes#endif 8721541Srgrimes if (uiop->uio_segflg == UIO_SYSSPACE) 8731541Srgrimes bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 8741541Srgrimes else 8751541Srgrimes copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 8761541Srgrimes mp->m_len += xfer; 8771541Srgrimes left -= xfer; 8781541Srgrimes uiocp += xfer; 8791541Srgrimes uiop->uio_offset += xfer; 8801541Srgrimes uiop->uio_resid -= xfer; 8811541Srgrimes } 8821541Srgrimes if (uiop->uio_iov->iov_len <= siz) { 8831541Srgrimes uiop->uio_iovcnt--; 8841541Srgrimes uiop->uio_iov++; 8851541Srgrimes } else { 8861541Srgrimes uiop->uio_iov->iov_base += uiosiz; 8871541Srgrimes uiop->uio_iov->iov_len -= uiosiz; 8881541Srgrimes } 8891541Srgrimes siz -= uiosiz; 8901541Srgrimes } 8911541Srgrimes if (rem > 0) { 8921541Srgrimes if (rem > M_TRAILINGSPACE(mp)) { 8931541Srgrimes MGET(mp, M_WAIT, MT_DATA); 8941541Srgrimes mp->m_len = 0; 8951541Srgrimes mp2->m_next = mp; 8961541Srgrimes } 8971541Srgrimes cp = mtod(mp, caddr_t)+mp->m_len; 8981541Srgrimes for (left = 0; left < rem; left++) 8991541Srgrimes *cp++ = '\0'; 9001541Srgrimes mp->m_len += rem; 9011541Srgrimes *bpos = cp; 9021541Srgrimes } else 9031541Srgrimes *bpos = mtod(mp, caddr_t)+mp->m_len; 9041541Srgrimes *mq = mp; 9051541Srgrimes return (0); 9061541Srgrimes} 9071541Srgrimes 9081541Srgrimes/* 9091541Srgrimes * Help break down an mbuf chain by setting the first siz bytes contiguous 9101541Srgrimes * pointed to by returned val. 9111541Srgrimes * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 9121541Srgrimes * cases. (The macros use the vars. dpos and dpos2) 9131541Srgrimes */ 9141549Srgrimesint 9151541Srgrimesnfsm_disct(mdp, dposp, siz, left, cp2) 9161541Srgrimes struct mbuf **mdp; 9171541Srgrimes caddr_t *dposp; 9181541Srgrimes int siz; 9191541Srgrimes int left; 9201541Srgrimes caddr_t *cp2; 9211541Srgrimes{ 9221541Srgrimes register struct mbuf *mp, *mp2; 9231541Srgrimes register int siz2, xfer; 9241541Srgrimes register caddr_t p; 9251541Srgrimes 9261541Srgrimes mp = *mdp; 9271541Srgrimes while (left == 0) { 9281541Srgrimes *mdp = mp = mp->m_next; 9291541Srgrimes if (mp == NULL) 9301541Srgrimes return (EBADRPC); 9311541Srgrimes left = mp->m_len; 9321541Srgrimes *dposp = mtod(mp, caddr_t); 9331541Srgrimes } 9341541Srgrimes if (left >= siz) { 9351541Srgrimes *cp2 = *dposp; 9361541Srgrimes *dposp += siz; 9371541Srgrimes } else if (mp->m_next == NULL) { 9381541Srgrimes return (EBADRPC); 9391541Srgrimes } else if (siz > MHLEN) { 9401541Srgrimes panic("nfs S too big"); 9411541Srgrimes } else { 9421541Srgrimes MGET(mp2, M_WAIT, MT_DATA); 9431541Srgrimes mp2->m_next = mp->m_next; 9441541Srgrimes mp->m_next = mp2; 9451541Srgrimes mp->m_len -= left; 9461541Srgrimes mp = mp2; 9471541Srgrimes *cp2 = p = mtod(mp, caddr_t); 9481541Srgrimes bcopy(*dposp, p, left); /* Copy what was left */ 9491541Srgrimes siz2 = siz-left; 9501541Srgrimes p += left; 9511541Srgrimes mp2 = mp->m_next; 9521541Srgrimes /* Loop around copying up the siz2 bytes */ 9531541Srgrimes while (siz2 > 0) { 9541541Srgrimes if (mp2 == NULL) 9551541Srgrimes return (EBADRPC); 9561541Srgrimes xfer = (siz2 > mp2->m_len) ? mp2->m_len : siz2; 9571541Srgrimes if (xfer > 0) { 9581541Srgrimes bcopy(mtod(mp2, caddr_t), p, xfer); 9591541Srgrimes NFSMADV(mp2, xfer); 9601541Srgrimes mp2->m_len -= xfer; 9611541Srgrimes p += xfer; 9621541Srgrimes siz2 -= xfer; 9631541Srgrimes } 9641541Srgrimes if (siz2 > 0) 9651541Srgrimes mp2 = mp2->m_next; 9661541Srgrimes } 9671541Srgrimes mp->m_len = siz; 9681541Srgrimes *mdp = mp2; 9691541Srgrimes *dposp = mtod(mp2, caddr_t); 9701541Srgrimes } 9711541Srgrimes return (0); 9721541Srgrimes} 9731541Srgrimes 9741541Srgrimes/* 9751541Srgrimes * Advance the position in the mbuf chain. 9761541Srgrimes */ 9771549Srgrimesint 9781541Srgrimesnfs_adv(mdp, dposp, offs, left) 9791541Srgrimes struct mbuf **mdp; 9801541Srgrimes caddr_t *dposp; 9811541Srgrimes int offs; 9821541Srgrimes int left; 9831541Srgrimes{ 9841541Srgrimes register struct mbuf *m; 9851541Srgrimes register int s; 9861541Srgrimes 9871541Srgrimes m = *mdp; 9881541Srgrimes s = left; 9891541Srgrimes while (s < offs) { 9901541Srgrimes offs -= s; 9911541Srgrimes m = m->m_next; 9921541Srgrimes if (m == NULL) 9931541Srgrimes return (EBADRPC); 9941541Srgrimes s = m->m_len; 9951541Srgrimes } 9961541Srgrimes *mdp = m; 9971541Srgrimes *dposp = mtod(m, caddr_t)+offs; 9981541Srgrimes return (0); 9991541Srgrimes} 10001541Srgrimes 10011541Srgrimes/* 10021541Srgrimes * Copy a string into mbufs for the hard cases... 10031541Srgrimes */ 10041549Srgrimesint 10051541Srgrimesnfsm_strtmbuf(mb, bpos, cp, siz) 10061541Srgrimes struct mbuf **mb; 10071541Srgrimes char **bpos; 10081541Srgrimes char *cp; 10091541Srgrimes long siz; 10101541Srgrimes{ 10111549Srgrimes register struct mbuf *m1 = 0, *m2; 10121541Srgrimes long left, xfer, len, tlen; 10131541Srgrimes u_long *tl; 10141541Srgrimes int putsize; 10151541Srgrimes 10161541Srgrimes putsize = 1; 10171541Srgrimes m2 = *mb; 10181541Srgrimes left = M_TRAILINGSPACE(m2); 10191541Srgrimes if (left > 0) { 10201541Srgrimes tl = ((u_long *)(*bpos)); 10211541Srgrimes *tl++ = txdr_unsigned(siz); 10221541Srgrimes putsize = 0; 10231541Srgrimes left -= NFSX_UNSIGNED; 10241541Srgrimes m2->m_len += NFSX_UNSIGNED; 10251541Srgrimes if (left > 0) { 10261541Srgrimes bcopy(cp, (caddr_t) tl, left); 10271541Srgrimes siz -= left; 10281541Srgrimes cp += left; 10291541Srgrimes m2->m_len += left; 10301541Srgrimes left = 0; 10311541Srgrimes } 10321541Srgrimes } 10331541Srgrimes /* Loop around adding mbufs */ 10341541Srgrimes while (siz > 0) { 10351541Srgrimes MGET(m1, M_WAIT, MT_DATA); 10361541Srgrimes if (siz > MLEN) 10371541Srgrimes MCLGET(m1, M_WAIT); 10381541Srgrimes m1->m_len = NFSMSIZ(m1); 10391541Srgrimes m2->m_next = m1; 10401541Srgrimes m2 = m1; 10411541Srgrimes tl = mtod(m1, u_long *); 10421541Srgrimes tlen = 0; 10431541Srgrimes if (putsize) { 10441541Srgrimes *tl++ = txdr_unsigned(siz); 10451541Srgrimes m1->m_len -= NFSX_UNSIGNED; 10461541Srgrimes tlen = NFSX_UNSIGNED; 10471541Srgrimes putsize = 0; 10481541Srgrimes } 10491541Srgrimes if (siz < m1->m_len) { 10501541Srgrimes len = nfsm_rndup(siz); 10511541Srgrimes xfer = siz; 10521541Srgrimes if (xfer < len) 10531541Srgrimes *(tl+(xfer>>2)) = 0; 10541541Srgrimes } else { 10551541Srgrimes xfer = len = m1->m_len; 10561541Srgrimes } 10571541Srgrimes bcopy(cp, (caddr_t) tl, xfer); 10581541Srgrimes m1->m_len = len+tlen; 10591541Srgrimes siz -= xfer; 10601541Srgrimes cp += xfer; 10611541Srgrimes } 10621541Srgrimes *mb = m1; 10631541Srgrimes *bpos = mtod(m1, caddr_t)+m1->m_len; 10641541Srgrimes return (0); 10651541Srgrimes} 10661541Srgrimes 10671541Srgrimes/* 10681541Srgrimes * Called once to initialize data structures... 10691541Srgrimes */ 10701549Srgrimesint 10711541Srgrimesnfs_init() 10721541Srgrimes{ 10731541Srgrimes register int i; 10741541Srgrimes 10759336Sdfr /* 10769336Sdfr * Check to see if major data structures haven't bloated. 10779336Sdfr */ 10789336Sdfr if (sizeof (struct nfsnode) > NFS_NODEALLOC) { 10799336Sdfr printf("struct nfsnode bloated (> %dbytes)\n", NFS_NODEALLOC); 10809336Sdfr printf("Try reducing NFS_SMALLFH\n"); 10819336Sdfr } 10829336Sdfr if (sizeof (struct nfsmount) > NFS_MNTALLOC) { 10839336Sdfr printf("struct nfsmount bloated (> %dbytes)\n", NFS_MNTALLOC); 10849336Sdfr printf("Try reducing NFS_MUIDHASHSIZ\n"); 10859336Sdfr } 10869336Sdfr if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) { 10879336Sdfr printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC); 10889336Sdfr printf("Try reducing NFS_UIDHASHSIZ\n"); 10899336Sdfr } 10909336Sdfr if (sizeof (struct nfsuid) > NFS_UIDALLOC) { 10919336Sdfr printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC); 10929336Sdfr printf("Try unionizing the nu_nickname and nu_flag fields\n"); 10939336Sdfr } 10941541Srgrimes nfsrtt.pos = 0; 10951541Srgrimes rpc_vers = txdr_unsigned(RPC_VER2); 10961541Srgrimes rpc_call = txdr_unsigned(RPC_CALL); 10971541Srgrimes rpc_reply = txdr_unsigned(RPC_REPLY); 10981541Srgrimes rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 10991541Srgrimes rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 11001541Srgrimes rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 11011541Srgrimes rpc_autherr = txdr_unsigned(RPC_AUTHERR); 11021541Srgrimes rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 11039336Sdfr rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 11041541Srgrimes nfs_prog = txdr_unsigned(NFS_PROG); 11059336Sdfr nqnfs_prog = txdr_unsigned(NQNFS_PROG); 11061541Srgrimes nfs_true = txdr_unsigned(TRUE); 11071541Srgrimes nfs_false = txdr_unsigned(FALSE); 11083664Sphk nfs_xdrneg1 = txdr_unsigned(-1); 11099336Sdfr nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 11109336Sdfr if (nfs_ticks < 1) 11119336Sdfr nfs_ticks = 1; 11121541Srgrimes /* Ensure async daemons disabled */ 11131541Srgrimes for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 11141541Srgrimes nfs_iodwant[i] = (struct proc *)0; 11151541Srgrimes TAILQ_INIT(&nfs_bufq); 11161541Srgrimes nfs_nhinit(); /* Init the nfsnode table */ 11171541Srgrimes nfsrv_init(0); /* Init server data structures */ 11181541Srgrimes nfsrv_initcache(); /* Init the server request cache */ 11191541Srgrimes 11201541Srgrimes /* 11211541Srgrimes * Initialize the nqnfs server stuff. 11221541Srgrimes */ 11231541Srgrimes if (nqnfsstarttime == 0) { 11241541Srgrimes nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 11251541Srgrimes + nqsrv_clockskew + nqsrv_writeslack; 11261541Srgrimes NQLOADNOVRAM(nqnfsstarttime); 11273664Sphk CIRCLEQ_INIT(&nqtimerhead); 11283664Sphk nqfhhashtbl = hashinit(NQLCHSZ, M_NQLEASE, &nqfhhash); 11291541Srgrimes } 11301541Srgrimes 11311541Srgrimes /* 11321541Srgrimes * Initialize reply list and start timer 11331541Srgrimes */ 11343664Sphk TAILQ_INIT(&nfs_reqq); 11353305Sphk nfs_timer(0); 11361549Srgrimes 11379336Sdfr#ifdef __FreeBSD__ 11382997Swollman /* 11392997Swollman * Set up lease_check and lease_updatetime so that other parts 11402997Swollman * of the system can call us, if we are loadable. 11412997Swollman */ 11422997Swollman lease_check = nfs_lease_check; 11432997Swollman lease_updatetime = nfs_lease_updatetime; 11442997Swollman vfsconf[MOUNT_NFS]->vfc_refcount++; /* make us non-unloadable */ 11452997Swollman#ifdef VFS_LKM 11462997Swollman sysent[SYS_nfssvc].sy_narg = 2; 11472997Swollman sysent[SYS_nfssvc].sy_call = nfssvc; 11482997Swollman sysent[SYS_getfh].sy_narg = 2; 11492997Swollman sysent[SYS_getfh].sy_call = getfh; 11502997Swollman#endif 11519336Sdfr#endif 11522997Swollman 11531549Srgrimes return (0); 11541541Srgrimes} 11551541Srgrimes 11561541Srgrimes/* 11571541Srgrimes * Attribute cache routines. 11581541Srgrimes * nfs_loadattrcache() - loads or updates the cache contents from attributes 11591541Srgrimes * that are on the mbuf list 11601541Srgrimes * nfs_getattrcache() - returns valid attributes if found in cache, returns 11611541Srgrimes * error otherwise 11621541Srgrimes */ 11631541Srgrimes 11641541Srgrimes/* 11651541Srgrimes * Load the attribute cache (that lives in the nfsnode entry) with 11661541Srgrimes * the values on the mbuf list and 11671541Srgrimes * Iff vap not NULL 11681541Srgrimes * copy the attributes to *vaper 11691541Srgrimes */ 11701549Srgrimesint 11711541Srgrimesnfs_loadattrcache(vpp, mdp, dposp, vaper) 11721541Srgrimes struct vnode **vpp; 11731541Srgrimes struct mbuf **mdp; 11741541Srgrimes caddr_t *dposp; 11751541Srgrimes struct vattr *vaper; 11761541Srgrimes{ 11771541Srgrimes register struct vnode *vp = *vpp; 11781541Srgrimes register struct vattr *vap; 11799336Sdfr register struct nfs_fattr *fp; 11803664Sphk register struct nfsnode *np; 11813664Sphk register struct nfsnodehashhead *nhpp; 11821541Srgrimes register long t1; 11839336Sdfr caddr_t cp2; 11849336Sdfr int error = 0, rdev; 11851541Srgrimes struct mbuf *md; 11861541Srgrimes enum vtype vtyp; 11871541Srgrimes u_short vmode; 11881541Srgrimes struct timespec mtime; 11891541Srgrimes struct vnode *nvp; 11909336Sdfr quad_t tval; 11919336Sdfr int v3 = NFS_ISV3(vp); 11921541Srgrimes 11931541Srgrimes md = *mdp; 11949336Sdfr t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 11959336Sdfr if (error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2)) 11961541Srgrimes return (error); 11979336Sdfr fp = (struct nfs_fattr *)cp2; 11989336Sdfr if (v3) { 11999336Sdfr vtyp = nfsv3tov_type(fp->fa_type); 12009336Sdfr vmode = fxdr_unsigned(u_short, fp->fa_mode); 12019336Sdfr rdev = makedev(fxdr_unsigned(u_char, fp->fa3_rdev.specdata1), 12029336Sdfr fxdr_unsigned(u_char, fp->fa3_rdev.specdata2)); 12039336Sdfr fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 12041541Srgrimes } else { 12059336Sdfr vtyp = nfsv2tov_type(fp->fa_type); 12069336Sdfr vmode = fxdr_unsigned(u_short, fp->fa_mode); 12079336Sdfr /* 12089336Sdfr * XXX 12099336Sdfr * 12109336Sdfr * The duplicate information returned in fa_type and fa_mode 12119336Sdfr * is an ambiguity in the NFS version 2 protocol. 12129336Sdfr * 12139336Sdfr * VREG should be taken literally as a regular file. If a 12149336Sdfr * server intents to return some type information differently 12159336Sdfr * in the upper bits of the mode field (e.g. for sockets, or 12169336Sdfr * FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we 12179336Sdfr * leave the examination of the mode bits even in the VREG 12189336Sdfr * case to avoid breakage for bogus servers, but we make sure 12199336Sdfr * that there are actually type bits set in the upper part of 12209336Sdfr * fa_mode (and failing that, trust the va_type field). 12219336Sdfr * 12229336Sdfr * NFSv3 cleared the issue, and requires fa_mode to not 12239336Sdfr * contain any type information (while also introduing sockets 12249336Sdfr * and FIFOs for fa_type). 12259336Sdfr */ 12269336Sdfr if (vtyp == VNON || (vtyp == VREG && (vmode & S_IFMT) != 0)) 12279336Sdfr vtyp = IFTOVT(vmode); 12289336Sdfr rdev = fxdr_unsigned(long, fp->fa2_rdev); 12299336Sdfr fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 12309336Sdfr 12319336Sdfr /* 12329336Sdfr * Really ugly NFSv2 kludge. 12339336Sdfr */ 12349336Sdfr if (vtyp == VCHR && rdev == 0xffffffff) 12359336Sdfr vtyp = VFIFO; 12361541Srgrimes } 12379336Sdfr 12381541Srgrimes /* 12391541Srgrimes * If v_type == VNON it is a new node, so fill in the v_type, 12408876Srgrimes * n_mtime fields. Check to see if it represents a special 12411541Srgrimes * device, and if so, check for a possible alias. Once the 12421541Srgrimes * correct vnode has been obtained, fill in the rest of the 12431541Srgrimes * information. 12441541Srgrimes */ 12451541Srgrimes np = VTONFS(vp); 12461541Srgrimes if (vp->v_type == VNON) { 12479336Sdfr /* 12489336Sdfr * If we had a lock and it turns out that the vnode 12499336Sdfr * is an object which we don't want to lock (e.g. VDIR) 12509336Sdfr * to avoid nasty hanging problems on a server crash, 12519336Sdfr * then release it here. 12529336Sdfr */ 12539336Sdfr if (vtyp != VREG && VOP_ISLOCKED(vp)) 12549336Sdfr VOP_UNLOCK(vp); 12559336Sdfr vp->v_type = vtyp; 12561541Srgrimes if (vp->v_type == VFIFO) { 12571541Srgrimes vp->v_op = fifo_nfsv2nodeop_p; 12581541Srgrimes } 12591541Srgrimes if (vp->v_type == VCHR || vp->v_type == VBLK) { 12601541Srgrimes vp->v_op = spec_nfsv2nodeop_p; 12613305Sphk nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 12623305Sphk if (nvp) { 12631541Srgrimes /* 12641541Srgrimes * Discard unneeded vnode, but save its nfsnode. 12651541Srgrimes */ 12663664Sphk LIST_REMOVE(np, n_hash); 12671541Srgrimes nvp->v_data = vp->v_data; 12681541Srgrimes vp->v_data = NULL; 12691541Srgrimes vp->v_op = spec_vnodeop_p; 12701541Srgrimes vrele(vp); 12711541Srgrimes vgone(vp); 12721541Srgrimes /* 12731541Srgrimes * Reinitialize aliased node. 12741541Srgrimes */ 12751541Srgrimes np->n_vnode = nvp; 12769336Sdfr nhpp = NFSNOHASH(nfs_hash(np->n_fhp, np->n_fhsize)); 12773664Sphk LIST_INSERT_HEAD(nhpp, np, n_hash); 12781541Srgrimes *vpp = vp = nvp; 12791541Srgrimes } 12801541Srgrimes } 12811541Srgrimes np->n_mtime = mtime.ts_sec; 12821541Srgrimes } 12831541Srgrimes vap = &np->n_vattr; 12841541Srgrimes vap->va_type = vtyp; 12851541Srgrimes vap->va_mode = (vmode & 07777); 12861541Srgrimes vap->va_rdev = (dev_t)rdev; 12871541Srgrimes vap->va_mtime = mtime; 12881541Srgrimes vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 12899336Sdfr if (v3) { 12909336Sdfr vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 12919336Sdfr vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 12929336Sdfr vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 12939336Sdfr fxdr_hyper(&fp->fa3_size, &vap->va_size); 12949336Sdfr vap->va_blocksize = NFS_FABLKSIZE; 12959336Sdfr fxdr_hyper(&fp->fa3_used, &vap->va_bytes); 12969336Sdfr vap->va_fileid = fxdr_unsigned(int, fp->fa3_fileid.nfsuquad[1]); 12979336Sdfr fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 12989336Sdfr fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 12999336Sdfr vap->va_flags = 0; 13009336Sdfr vap->va_filerev = 0; 13011541Srgrimes } else { 13029336Sdfr vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 13039336Sdfr vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 13049336Sdfr vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 13059336Sdfr vap->va_size = fxdr_unsigned(u_long, fp->fa2_size); 13069336Sdfr vap->va_blocksize = fxdr_unsigned(long, fp->fa2_blocksize); 13079336Sdfr vap->va_bytes = fxdr_unsigned(long, fp->fa2_blocks) * NFS_FABLKSIZE; 13089336Sdfr vap->va_fileid = fxdr_unsigned(long, fp->fa2_fileid); 13099336Sdfr fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 13101541Srgrimes vap->va_flags = 0; 13119336Sdfr vap->va_ctime.ts_sec = fxdr_unsigned(long, fp->fa2_ctime.nfsv2_sec); 13129336Sdfr vap->va_ctime.ts_nsec = 0; 13139336Sdfr vap->va_gen = fxdr_unsigned(u_long, fp->fa2_ctime.nfsv2_usec); 13141541Srgrimes vap->va_filerev = 0; 13151541Srgrimes } 13161541Srgrimes if (vap->va_size != np->n_size) { 13171541Srgrimes if (vap->va_type == VREG) { 13181541Srgrimes if (np->n_flag & NMODIFIED) { 13191541Srgrimes if (vap->va_size < np->n_size) 13201541Srgrimes vap->va_size = np->n_size; 13211541Srgrimes else 13221541Srgrimes np->n_size = vap->va_size; 13231541Srgrimes } else 13241541Srgrimes np->n_size = vap->va_size; 13251541Srgrimes vnode_pager_setsize(vp, (u_long)np->n_size); 13261541Srgrimes } else 13271541Srgrimes np->n_size = vap->va_size; 13281541Srgrimes } 13291541Srgrimes np->n_attrstamp = time.tv_sec; 13301541Srgrimes if (vaper != NULL) { 13311541Srgrimes bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 13321541Srgrimes if (np->n_flag & NCHG) { 13339336Sdfr if (np->n_flag & NACC) 13349336Sdfr vaper->va_atime = np->n_atim; 13359336Sdfr if (np->n_flag & NUPD) 13369336Sdfr vaper->va_mtime = np->n_mtim; 13371541Srgrimes } 13381541Srgrimes } 13391541Srgrimes return (0); 13401541Srgrimes} 13411541Srgrimes 13421541Srgrimes/* 13431541Srgrimes * Check the time stamp 13441541Srgrimes * If the cache is valid, copy contents to *vap and return 0 13451541Srgrimes * otherwise return an error 13461541Srgrimes */ 13471549Srgrimesint 13481541Srgrimesnfs_getattrcache(vp, vaper) 13491541Srgrimes register struct vnode *vp; 13501541Srgrimes struct vattr *vaper; 13511541Srgrimes{ 13521541Srgrimes register struct nfsnode *np = VTONFS(vp); 13531541Srgrimes register struct vattr *vap; 13541541Srgrimes 13559336Sdfr if ((time.tv_sec - np->n_attrstamp) >= NFS_ATTRTIMEO(np)) { 13561541Srgrimes nfsstats.attrcache_misses++; 13571541Srgrimes return (ENOENT); 13581541Srgrimes } 13591541Srgrimes nfsstats.attrcache_hits++; 13601541Srgrimes vap = &np->n_vattr; 13611541Srgrimes if (vap->va_size != np->n_size) { 13621541Srgrimes if (vap->va_type == VREG) { 13631541Srgrimes if (np->n_flag & NMODIFIED) { 13641541Srgrimes if (vap->va_size < np->n_size) 13651541Srgrimes vap->va_size = np->n_size; 13661541Srgrimes else 13671541Srgrimes np->n_size = vap->va_size; 13681541Srgrimes } else 13691541Srgrimes np->n_size = vap->va_size; 13701541Srgrimes vnode_pager_setsize(vp, (u_long)np->n_size); 13711541Srgrimes } else 13721541Srgrimes np->n_size = vap->va_size; 13731541Srgrimes } 13741541Srgrimes bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr)); 13751541Srgrimes if (np->n_flag & NCHG) { 13769336Sdfr if (np->n_flag & NACC) 13779336Sdfr vaper->va_atime = np->n_atim; 13789336Sdfr if (np->n_flag & NUPD) 13799336Sdfr vaper->va_mtime = np->n_mtim; 13801541Srgrimes } 13811541Srgrimes return (0); 13821541Srgrimes} 13831541Srgrimes 13841541Srgrimes/* 13851541Srgrimes * Set up nameidata for a lookup() call and do it 13861541Srgrimes */ 13871549Srgrimesint 13889336Sdfrnfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag) 13891541Srgrimes register struct nameidata *ndp; 13901541Srgrimes fhandle_t *fhp; 13911541Srgrimes int len; 13921541Srgrimes struct nfssvc_sock *slp; 13931541Srgrimes struct mbuf *nam; 13941541Srgrimes struct mbuf **mdp; 13951541Srgrimes caddr_t *dposp; 13969336Sdfr struct vnode **retdirp; 13971541Srgrimes struct proc *p; 13989336Sdfr int kerbflag; 13991541Srgrimes{ 14001541Srgrimes register int i, rem; 14011541Srgrimes register struct mbuf *md; 14021541Srgrimes register char *fromcp, *tocp; 14031541Srgrimes struct vnode *dp; 14041541Srgrimes int error, rdonly; 14051541Srgrimes struct componentname *cnp = &ndp->ni_cnd; 14061541Srgrimes 14079336Sdfr *retdirp = (struct vnode *)0; 14081541Srgrimes MALLOC(cnp->cn_pnbuf, char *, len + 1, M_NAMEI, M_WAITOK); 14091541Srgrimes /* 14101541Srgrimes * Copy the name from the mbuf list to ndp->ni_pnbuf 14111541Srgrimes * and set the various ndp fields appropriately. 14121541Srgrimes */ 14131541Srgrimes fromcp = *dposp; 14141541Srgrimes tocp = cnp->cn_pnbuf; 14151541Srgrimes md = *mdp; 14161541Srgrimes rem = mtod(md, caddr_t) + md->m_len - fromcp; 14171541Srgrimes cnp->cn_hash = 0; 14181541Srgrimes for (i = 0; i < len; i++) { 14191541Srgrimes while (rem == 0) { 14201541Srgrimes md = md->m_next; 14211541Srgrimes if (md == NULL) { 14221541Srgrimes error = EBADRPC; 14231541Srgrimes goto out; 14241541Srgrimes } 14251541Srgrimes fromcp = mtod(md, caddr_t); 14261541Srgrimes rem = md->m_len; 14271541Srgrimes } 14281541Srgrimes if (*fromcp == '\0' || *fromcp == '/') { 14299336Sdfr error = EACCES; 14301541Srgrimes goto out; 14311541Srgrimes } 14321541Srgrimes cnp->cn_hash += (unsigned char)*fromcp; 14331541Srgrimes *tocp++ = *fromcp++; 14341541Srgrimes rem--; 14351541Srgrimes } 14361541Srgrimes *tocp = '\0'; 14371541Srgrimes *mdp = md; 14381541Srgrimes *dposp = fromcp; 14391541Srgrimes len = nfsm_rndup(len)-len; 14401541Srgrimes if (len > 0) { 14411541Srgrimes if (rem >= len) 14421541Srgrimes *dposp += len; 14439336Sdfr else if (error = nfs_adv(mdp, dposp, len, rem)) 14449336Sdfr goto out; 14451541Srgrimes } 14461541Srgrimes ndp->ni_pathlen = tocp - cnp->cn_pnbuf; 14471541Srgrimes cnp->cn_nameptr = cnp->cn_pnbuf; 14481541Srgrimes /* 14491541Srgrimes * Extract and set starting directory. 14501541Srgrimes */ 14519336Sdfr if (error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 14529336Sdfr nam, &rdonly, kerbflag)) 14531541Srgrimes goto out; 14541541Srgrimes if (dp->v_type != VDIR) { 14556417Sdg nfsrv_vrele(dp); 14561541Srgrimes error = ENOTDIR; 14571541Srgrimes goto out; 14581541Srgrimes } 14599336Sdfr VREF(dp); 14609336Sdfr *retdirp = dp; 14611541Srgrimes ndp->ni_startdir = dp; 14621541Srgrimes if (rdonly) 14631541Srgrimes cnp->cn_flags |= (NOCROSSMOUNT | RDONLY); 14641541Srgrimes else 14651541Srgrimes cnp->cn_flags |= NOCROSSMOUNT; 14661541Srgrimes /* 14671541Srgrimes * And call lookup() to do the real work 14681541Srgrimes */ 14691541Srgrimes cnp->cn_proc = p; 14709336Sdfr if (error = lookup(ndp)) 14711541Srgrimes goto out; 14721541Srgrimes /* 14731541Srgrimes * Check for encountering a symbolic link 14741541Srgrimes */ 14751541Srgrimes if (cnp->cn_flags & ISSYMLINK) { 14761541Srgrimes if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 14771541Srgrimes vput(ndp->ni_dvp); 14781541Srgrimes else 14791541Srgrimes vrele(ndp->ni_dvp); 14801541Srgrimes vput(ndp->ni_vp); 14811541Srgrimes ndp->ni_vp = NULL; 14821541Srgrimes error = EINVAL; 14831541Srgrimes goto out; 14841541Srgrimes } 14858832Sdg 14868832Sdg nfsrv_vmio(ndp->ni_vp); 14878832Sdg 14881541Srgrimes /* 14891541Srgrimes * Check for saved name request 14901541Srgrimes */ 14911541Srgrimes if (cnp->cn_flags & (SAVENAME | SAVESTART)) { 14921541Srgrimes cnp->cn_flags |= HASBUF; 14931541Srgrimes return (0); 14941541Srgrimes } 14951541Srgrimesout: 14961541Srgrimes FREE(cnp->cn_pnbuf, M_NAMEI); 14971541Srgrimes return (error); 14981541Srgrimes} 14991541Srgrimes 15001541Srgrimes/* 15011541Srgrimes * A fiddled version of m_adj() that ensures null fill to a long 15021541Srgrimes * boundary and only trims off the back end 15031541Srgrimes */ 15041541Srgrimesvoid 15051541Srgrimesnfsm_adj(mp, len, nul) 15061541Srgrimes struct mbuf *mp; 15071541Srgrimes register int len; 15081541Srgrimes int nul; 15091541Srgrimes{ 15101541Srgrimes register struct mbuf *m; 15111541Srgrimes register int count, i; 15121541Srgrimes register char *cp; 15131541Srgrimes 15141541Srgrimes /* 15151541Srgrimes * Trim from tail. Scan the mbuf chain, 15161541Srgrimes * calculating its length and finding the last mbuf. 15171541Srgrimes * If the adjustment only affects this mbuf, then just 15181541Srgrimes * adjust and return. Otherwise, rescan and truncate 15191541Srgrimes * after the remaining size. 15201541Srgrimes */ 15211541Srgrimes count = 0; 15221541Srgrimes m = mp; 15231541Srgrimes for (;;) { 15241541Srgrimes count += m->m_len; 15251541Srgrimes if (m->m_next == (struct mbuf *)0) 15261541Srgrimes break; 15271541Srgrimes m = m->m_next; 15281541Srgrimes } 15291541Srgrimes if (m->m_len > len) { 15301541Srgrimes m->m_len -= len; 15311541Srgrimes if (nul > 0) { 15321541Srgrimes cp = mtod(m, caddr_t)+m->m_len-nul; 15331541Srgrimes for (i = 0; i < nul; i++) 15341541Srgrimes *cp++ = '\0'; 15351541Srgrimes } 15361541Srgrimes return; 15371541Srgrimes } 15381541Srgrimes count -= len; 15391541Srgrimes if (count < 0) 15401541Srgrimes count = 0; 15411541Srgrimes /* 15421541Srgrimes * Correct length for chain is "count". 15431541Srgrimes * Find the mbuf with last data, adjust its length, 15441541Srgrimes * and toss data from remaining mbufs on chain. 15451541Srgrimes */ 15461541Srgrimes for (m = mp; m; m = m->m_next) { 15471541Srgrimes if (m->m_len >= count) { 15481541Srgrimes m->m_len = count; 15491541Srgrimes if (nul > 0) { 15501541Srgrimes cp = mtod(m, caddr_t)+m->m_len-nul; 15511541Srgrimes for (i = 0; i < nul; i++) 15521541Srgrimes *cp++ = '\0'; 15531541Srgrimes } 15541541Srgrimes break; 15551541Srgrimes } 15561541Srgrimes count -= m->m_len; 15571541Srgrimes } 15583305Sphk for (m = m->m_next;m;m = m->m_next) 15591541Srgrimes m->m_len = 0; 15601541Srgrimes} 15611541Srgrimes 15621541Srgrimes/* 15639336Sdfr * Make these functions instead of macros, so that the kernel text size 15649336Sdfr * doesn't get too big... 15659336Sdfr */ 15669336Sdfrvoid 15679336Sdfrnfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 15689336Sdfr struct nfsrv_descript *nfsd; 15699336Sdfr int before_ret; 15709336Sdfr register struct vattr *before_vap; 15719336Sdfr int after_ret; 15729336Sdfr struct vattr *after_vap; 15739336Sdfr struct mbuf **mbp; 15749336Sdfr char **bposp; 15759336Sdfr{ 15769336Sdfr register struct mbuf *mb = *mbp, *mb2; 15779336Sdfr register char *bpos = *bposp; 15789336Sdfr register u_long *tl; 15799336Sdfr 15809336Sdfr if (before_ret) { 15819336Sdfr nfsm_build(tl, u_long *, NFSX_UNSIGNED); 15829336Sdfr *tl = nfs_false; 15839336Sdfr } else { 15849336Sdfr nfsm_build(tl, u_long *, 7 * NFSX_UNSIGNED); 15859336Sdfr *tl++ = nfs_true; 15869336Sdfr txdr_hyper(&(before_vap->va_size), tl); 15879336Sdfr tl += 2; 15889336Sdfr txdr_nfsv3time(&(before_vap->va_mtime), tl); 15899336Sdfr tl += 2; 15909336Sdfr txdr_nfsv3time(&(before_vap->va_ctime), tl); 15919336Sdfr } 15929336Sdfr *bposp = bpos; 15939336Sdfr *mbp = mb; 15949336Sdfr nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 15959336Sdfr} 15969336Sdfr 15979336Sdfrvoid 15989336Sdfrnfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 15999336Sdfr struct nfsrv_descript *nfsd; 16009336Sdfr int after_ret; 16019336Sdfr struct vattr *after_vap; 16029336Sdfr struct mbuf **mbp; 16039336Sdfr char **bposp; 16049336Sdfr{ 16059336Sdfr register struct mbuf *mb = *mbp, *mb2; 16069336Sdfr register char *bpos = *bposp; 16079336Sdfr register u_long *tl; 16089336Sdfr register struct nfs_fattr *fp; 16099336Sdfr 16109336Sdfr if (after_ret) { 16119336Sdfr nfsm_build(tl, u_long *, NFSX_UNSIGNED); 16129336Sdfr *tl = nfs_false; 16139336Sdfr } else { 16149336Sdfr nfsm_build(tl, u_long *, NFSX_UNSIGNED + NFSX_V3FATTR); 16159336Sdfr *tl++ = nfs_true; 16169336Sdfr fp = (struct nfs_fattr *)tl; 16179336Sdfr nfsm_srvfattr(nfsd, after_vap, fp); 16189336Sdfr } 16199336Sdfr *mbp = mb; 16209336Sdfr *bposp = bpos; 16219336Sdfr} 16229336Sdfr 16239336Sdfrvoid 16249336Sdfrnfsm_srvfattr(nfsd, vap, fp) 16259336Sdfr register struct nfsrv_descript *nfsd; 16269336Sdfr register struct vattr *vap; 16279336Sdfr register struct nfs_fattr *fp; 16289336Sdfr{ 16299336Sdfr 16309336Sdfr fp->fa_nlink = txdr_unsigned(vap->va_nlink); 16319336Sdfr fp->fa_uid = txdr_unsigned(vap->va_uid); 16329336Sdfr fp->fa_gid = txdr_unsigned(vap->va_gid); 16339336Sdfr if (nfsd->nd_flag & ND_NFSV3) { 16349336Sdfr fp->fa_type = vtonfsv3_type(vap->va_type); 16359336Sdfr fp->fa_mode = vtonfsv3_mode(vap->va_mode); 16369336Sdfr txdr_hyper(&vap->va_size, &fp->fa3_size); 16379336Sdfr txdr_hyper(&vap->va_bytes, &fp->fa3_used); 16389336Sdfr fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 16399336Sdfr fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 16409336Sdfr fp->fa3_fsid.nfsuquad[0] = 0; 16419336Sdfr fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 16429336Sdfr fp->fa3_fileid.nfsuquad[0] = 0; 16439336Sdfr fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid); 16449336Sdfr txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 16459336Sdfr txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 16469336Sdfr txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 16479336Sdfr } else { 16489336Sdfr fp->fa_type = vtonfsv2_type(vap->va_type); 16499336Sdfr fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 16509336Sdfr fp->fa2_size = txdr_unsigned(vap->va_size); 16519336Sdfr fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 16529336Sdfr if (vap->va_type == VFIFO) 16539336Sdfr fp->fa2_rdev = 0xffffffff; 16549336Sdfr else 16559336Sdfr fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 16569336Sdfr fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 16579336Sdfr fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 16589336Sdfr fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 16599336Sdfr txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 16609336Sdfr txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 16619336Sdfr txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 16629336Sdfr } 16639336Sdfr} 16649336Sdfr 16659336Sdfr/* 16661541Srgrimes * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 16671541Srgrimes * - look up fsid in mount list (if not found ret error) 16681541Srgrimes * - get vp and export rights by calling VFS_FHTOVP() 16691541Srgrimes * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 16701541Srgrimes * - if not lockflag unlock it with VOP_UNLOCK() 16711541Srgrimes */ 16721549Srgrimesint 16739336Sdfrnfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag) 16741541Srgrimes fhandle_t *fhp; 16751541Srgrimes int lockflag; 16761541Srgrimes struct vnode **vpp; 16771541Srgrimes struct ucred *cred; 16781541Srgrimes struct nfssvc_sock *slp; 16791541Srgrimes struct mbuf *nam; 16801541Srgrimes int *rdonlyp; 16819336Sdfr int kerbflag; 16821541Srgrimes{ 16831541Srgrimes register struct mount *mp; 16841541Srgrimes register struct nfsuid *uidp; 16851541Srgrimes register int i; 16861541Srgrimes struct ucred *credanon; 16871541Srgrimes int error, exflags; 16881541Srgrimes 16891541Srgrimes *vpp = (struct vnode *)0; 16903305Sphk mp = getvfs(&fhp->fh_fsid); 16913305Sphk if (!mp) 16921541Srgrimes return (ESTALE); 16933305Sphk error = VFS_FHTOVP(mp, &fhp->fh_fid, nam, vpp, &exflags, &credanon); 16943305Sphk if (error) 16951541Srgrimes return (error); 16961541Srgrimes /* 16971541Srgrimes * Check/setup credentials. 16981541Srgrimes */ 16991541Srgrimes if (exflags & MNT_EXKERB) { 17009336Sdfr if (!kerbflag) { 17011541Srgrimes vput(*vpp); 17029336Sdfr return (NFSERR_AUTHERR | AUTH_TOOWEAK); 17031541Srgrimes } 17049336Sdfr } else if (kerbflag) { 17059336Sdfr vput(*vpp); 17069336Sdfr return (NFSERR_AUTHERR | AUTH_TOOWEAK); 17071541Srgrimes } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) { 17081541Srgrimes cred->cr_uid = credanon->cr_uid; 17091541Srgrimes for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 17101541Srgrimes cred->cr_groups[i] = credanon->cr_groups[i]; 17113664Sphk cred->cr_ngroups = i; 17121541Srgrimes } 17131541Srgrimes if (exflags & MNT_EXRDONLY) 17141541Srgrimes *rdonlyp = 1; 17151541Srgrimes else 17161541Srgrimes *rdonlyp = 0; 17177969Sdyson 17187969Sdyson nfsrv_vmio(*vpp); 17197969Sdyson 17201541Srgrimes if (!lockflag) 17211541Srgrimes VOP_UNLOCK(*vpp); 17221541Srgrimes return (0); 17231541Srgrimes} 17241541Srgrimes 17251541Srgrimes/* 17261541Srgrimes * This function compares two net addresses by family and returns TRUE 17271541Srgrimes * if they are the same host. 17281541Srgrimes * If there is any doubt, return FALSE. 17291541Srgrimes * The AF_INET family is handled as a special case so that address mbufs 17301541Srgrimes * don't need to be saved to store "struct in_addr", which is only 4 bytes. 17311541Srgrimes */ 17321549Srgrimesint 17331541Srgrimesnetaddr_match(family, haddr, nam) 17341541Srgrimes int family; 17351541Srgrimes union nethostaddr *haddr; 17361541Srgrimes struct mbuf *nam; 17371541Srgrimes{ 17381541Srgrimes register struct sockaddr_in *inetaddr; 17391541Srgrimes 17401541Srgrimes switch (family) { 17411541Srgrimes case AF_INET: 17421541Srgrimes inetaddr = mtod(nam, struct sockaddr_in *); 17431541Srgrimes if (inetaddr->sin_family == AF_INET && 17441541Srgrimes inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 17451541Srgrimes return (1); 17461541Srgrimes break; 17471541Srgrimes#ifdef ISO 17481541Srgrimes case AF_ISO: 17491541Srgrimes { 17501541Srgrimes register struct sockaddr_iso *isoaddr1, *isoaddr2; 17511541Srgrimes 17521541Srgrimes isoaddr1 = mtod(nam, struct sockaddr_iso *); 17531541Srgrimes isoaddr2 = mtod(haddr->had_nam, struct sockaddr_iso *); 17541541Srgrimes if (isoaddr1->siso_family == AF_ISO && 17551541Srgrimes isoaddr1->siso_nlen > 0 && 17561541Srgrimes isoaddr1->siso_nlen == isoaddr2->siso_nlen && 17571541Srgrimes SAME_ISOADDR(isoaddr1, isoaddr2)) 17581541Srgrimes return (1); 17591541Srgrimes break; 17601541Srgrimes } 17611541Srgrimes#endif /* ISO */ 17621541Srgrimes default: 17631541Srgrimes break; 17641541Srgrimes }; 17651541Srgrimes return (0); 17661541Srgrimes} 17675455Sdg 17689336Sdfrstatic nfsuint64 nfs_nullcookie = { 0, 0 }; 17699336Sdfr/* 17709336Sdfr * This function finds the directory cookie that corresponds to the 17719336Sdfr * logical byte offset given. 17729336Sdfr */ 17739336Sdfrnfsuint64 * 17749336Sdfrnfs_getcookie(np, off, add) 17759336Sdfr register struct nfsnode *np; 17769336Sdfr off_t off; 17779336Sdfr int add; 17789336Sdfr{ 17799336Sdfr register struct nfsdmap *dp, *dp2; 17809336Sdfr register int pos; 17819336Sdfr 17829336Sdfr pos = off / NFS_DIRBLKSIZ; 17839336Sdfr if (pos == 0) { 17849336Sdfr#ifdef DIAGNOSTIC 17859336Sdfr if (add) 17869336Sdfr panic("nfs getcookie add at 0"); 17879336Sdfr#endif 17889336Sdfr return (&nfs_nullcookie); 17899336Sdfr } 17909336Sdfr pos--; 17919336Sdfr dp = np->n_cookies.lh_first; 17929336Sdfr if (!dp) { 17939336Sdfr if (add) { 17949336Sdfr MALLOC(dp, struct nfsdmap *, sizeof (struct nfsdmap), 17959336Sdfr M_NFSDIROFF, M_WAITOK); 17969336Sdfr dp->ndm_eocookie = 0; 17979336Sdfr LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list); 17989336Sdfr } else 17999336Sdfr return ((nfsuint64 *)0); 18009336Sdfr } 18019336Sdfr while (pos >= NFSNUMCOOKIES) { 18029336Sdfr pos -= NFSNUMCOOKIES; 18039336Sdfr if (dp->ndm_list.le_next) { 18049336Sdfr if (!add && dp->ndm_eocookie < NFSNUMCOOKIES && 18059336Sdfr pos >= dp->ndm_eocookie) 18069336Sdfr return ((nfsuint64 *)0); 18079336Sdfr dp = dp->ndm_list.le_next; 18089336Sdfr } else if (add) { 18099336Sdfr MALLOC(dp2, struct nfsdmap *, sizeof (struct nfsdmap), 18109336Sdfr M_NFSDIROFF, M_WAITOK); 18119336Sdfr dp2->ndm_eocookie = 0; 18129336Sdfr LIST_INSERT_AFTER(dp, dp2, ndm_list); 18139336Sdfr dp = dp2; 18149336Sdfr } else 18159336Sdfr return ((nfsuint64 *)0); 18169336Sdfr } 18179336Sdfr if (pos >= dp->ndm_eocookie) { 18189336Sdfr if (add) 18199336Sdfr dp->ndm_eocookie = pos + 1; 18209336Sdfr else 18219336Sdfr return ((nfsuint64 *)0); 18229336Sdfr } 18239336Sdfr return (&dp->ndm_cookies[pos]); 18249336Sdfr} 18259336Sdfr 18269336Sdfr/* 18279336Sdfr * Invalidate cached directory information, except for the actual directory 18289336Sdfr * blocks (which are invalidated separately). 18299336Sdfr * Done mainly to avoid the use of stale offset cookies. 18309336Sdfr */ 18319336Sdfrvoid 18329336Sdfrnfs_invaldir(vp) 18339336Sdfr register struct vnode *vp; 18349336Sdfr{ 18359336Sdfr register struct nfsnode *np = VTONFS(vp); 18369336Sdfr 18379336Sdfr#ifdef DIAGNOSTIC 18389336Sdfr if (vp->v_type != VDIR) 18399336Sdfr panic("nfs: invaldir not dir"); 18409336Sdfr#endif 18419336Sdfr np->n_direofoffset = 0; 18429336Sdfr np->n_cookieverf.nfsuquad[0] = 0; 18439336Sdfr np->n_cookieverf.nfsuquad[1] = 0; 18449336Sdfr if (np->n_cookies.lh_first) 18459336Sdfr np->n_cookies.lh_first->ndm_eocookie = 0; 18469336Sdfr} 18479336Sdfr 18489336Sdfr/* 18499336Sdfr * The write verifier has changed (probably due to a server reboot), so all 18509336Sdfr * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 18519336Sdfr * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 18529336Sdfr * flag. Once done the new write verifier can be set for the mount point. 18539336Sdfr */ 18549336Sdfrvoid 18559336Sdfrnfs_clearcommit(mp) 18569336Sdfr struct mount *mp; 18579336Sdfr{ 18589336Sdfr register struct vnode *vp, *nvp; 18599336Sdfr register struct buf *bp, *nbp; 18609336Sdfr int s; 18619336Sdfr 18629336Sdfr s = splbio(); 18639336Sdfrloop: 18649336Sdfr for (vp = mp->mnt_vnodelist.lh_first; vp; vp = nvp) { 18659336Sdfr if (vp->v_mount != mp) /* Paranoia */ 18669336Sdfr goto loop; 18679336Sdfr nvp = vp->v_mntvnodes.le_next; 18689336Sdfr for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 18699336Sdfr nbp = bp->b_vnbufs.le_next; 18709336Sdfr if ((bp->b_flags & (B_BUSY | B_DELWRI | B_NEEDCOMMIT)) 18719336Sdfr == (B_DELWRI | B_NEEDCOMMIT)) 18729336Sdfr bp->b_flags &= ~B_NEEDCOMMIT; 18739336Sdfr } 18749336Sdfr } 18759336Sdfr splx(s); 18769336Sdfr} 18779336Sdfr 18789336Sdfr/* 18799336Sdfr * Map errnos to NFS error numbers. For Version 3 also filter out error 18809336Sdfr * numbers not specified for the associated procedure. 18819336Sdfr */ 18825455Sdgint 18839336Sdfrnfsrv_errmap(nd, err) 18849336Sdfr struct nfsrv_descript *nd; 18859336Sdfr register int err; 18869336Sdfr{ 18879336Sdfr register short *defaulterrp, *errp; 18889336Sdfr 18899336Sdfr if (nd->nd_flag & ND_NFSV3) { 18909336Sdfr if (nd->nd_procnum <= NFSPROC_COMMIT) { 18919336Sdfr errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 18929336Sdfr while (*++errp) { 18939336Sdfr if (*errp == err) 18949336Sdfr return (err); 18959336Sdfr else if (*errp > err) 18969336Sdfr break; 18979336Sdfr } 18989336Sdfr return ((int)*defaulterrp); 18999336Sdfr } else 19009336Sdfr return (err & 0xffff); 19019336Sdfr } 19029336Sdfr if (err <= ELAST) 19039336Sdfr return ((int)nfsrv_v2errmap[err - 1]); 19049336Sdfr return (NFSERR_IO); 19059336Sdfr} 19069336Sdfr 19079336Sdfrint 19089356Sdgnfsrv_vmio(struct vnode *vp) { 19095455Sdg vm_object_t object; 19105455Sdg 19119356Sdg if ((vp == NULL) || (vp->v_type != VREG)) 19125455Sdg return 1; 19135455Sdg 19145455Sdgretry: 19159356Sdg if ((vp->v_flag & VVMIO) == 0) { 19169456Sdg struct vattr vat; 19179456Sdg struct proc *p = curproc; 19189456Sdg 19199456Sdg if (VOP_GETATTR(vp, &vat, p->p_ucred, p) != 0) 19209456Sdg panic("nfsrv_vmio: VOP_GETATTR failed"); 19219456Sdg 19229588Sdg (void) vnode_pager_alloc(vp, vat.va_size, 0, 0); 19239456Sdg 19245455Sdg vp->v_flag |= VVMIO; 19255455Sdg } else { 19269356Sdg if ((object = vp->v_object) && 19275455Sdg (object->flags & OBJ_DEAD)) { 19289356Sdg tsleep(object, PVM, "nfdead", 0); 19295455Sdg goto retry; 19305455Sdg } 19319356Sdg if (!object) 19325455Sdg panic("nfsrv_vmio: VMIO object missing"); 19339507Sdg vm_object_reference(object); 19345455Sdg } 19355455Sdg return 0; 19365455Sdg} 19375455Sdgint 19389356Sdgnfsrv_vput(struct vnode *vp) { 19399356Sdg if ((vp->v_flag & VVMIO) && vp->v_object) { 19409356Sdg vput(vp); 19419356Sdg vm_object_deallocate(vp->v_object); 19426210Sdg } else { 19439356Sdg vput(vp); 19445455Sdg } 19455455Sdg return 0; 19465455Sdg} 19475455Sdgint 19489356Sdgnfsrv_vrele(struct vnode *vp) { 19499356Sdg if ((vp->v_flag & VVMIO) && vp->v_object) { 19509356Sdg vrele(vp); 19519356Sdg vm_object_deallocate(vp->v_object); 19526210Sdg } else { 19539356Sdg vrele(vp); 19545455Sdg } 19555455Sdg return 0; 19565455Sdg} 1957