nfs_subs.c revision 12662
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 3712662Sdg * $Id: nfs_subs.c,v 1.24 1995/10/29 15:33:08 phk 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> 6212662Sdg#include <vm/vm_param.h> 6312662Sdg#include <vm/vm_object.h> 6412662Sdg#include <vm/vm_extern.h> 659507Sdg#include <vm/vnode_pager.h> 663305Sphk 671541Srgrimes#include <nfs/rpcv2.h> 689336Sdfr#include <nfs/nfsproto.h> 691541Srgrimes#include <nfs/nfsnode.h> 701541Srgrimes#include <nfs/nfs.h> 711541Srgrimes#include <nfs/xdr_subs.h> 721541Srgrimes#include <nfs/nfsm_subs.h> 731541Srgrimes#include <nfs/nfsmount.h> 741541Srgrimes#include <nfs/nqnfs.h> 751541Srgrimes#include <nfs/nfsrtt.h> 761541Srgrimes 771541Srgrimes#include <miscfs/specfs/specdev.h> 781541Srgrimes 791541Srgrimes#include <netinet/in.h> 801541Srgrimes#ifdef ISO 811541Srgrimes#include <netiso/iso.h> 821541Srgrimes#endif 831541Srgrimes 841541Srgrimes/* 851541Srgrimes * Data items converted to xdr at startup, since they are constant 861541Srgrimes * This is kinda hokey, but may save a little time doing byte swaps 871541Srgrimes */ 881541Srgrimesu_long nfs_xdrneg1; 891541Srgrimesu_long rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 909336Sdfr rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 911541Srgrimes rpc_auth_kerb; 929336Sdfru_long nfs_prog, nqnfs_prog, nfs_true, nfs_false; 931541Srgrimes 941541Srgrimes/* And other global data */ 951541Srgrimesstatic u_long nfs_xid = 0; 969336Sdfrenum vtype nv2tov_type[8] = { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON }; 979336Sdfrenum vtype nv3tov_type[8]={ VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO }; 989336Sdfrint nfs_ticks; 999336Sdfr 1009759Sbdestruct nfs_reqq nfs_reqq; 1019759Sbdestruct nfssvc_sockhead nfssvc_sockhead; 1029759Sbdeint nfssvc_sockhead_flag; 1039759Sbdestruct nfsd_head nfsd_head; 1049759Sbdeint nfsd_head_flag; 1059759Sbdestruct nfs_bufq nfs_bufq; 1069759Sbdestruct nqtimerhead nqtimerhead; 1079759Sbdestruct nqfhhashhead *nqfhhashtbl; 1089759Sbdeu_long nqfhhash; 1099759Sbde 1109336Sdfr/* 1119336Sdfr * Mapping of old NFS Version 2 RPC numbers to generic numbers. 1129336Sdfr */ 1139336Sdfrint nfsv3_procid[NFS_NPROCS] = { 1149336Sdfr NFSPROC_NULL, 1159336Sdfr NFSPROC_GETATTR, 1169336Sdfr NFSPROC_SETATTR, 1179336Sdfr NFSPROC_NOOP, 1189336Sdfr NFSPROC_LOOKUP, 1199336Sdfr NFSPROC_READLINK, 1209336Sdfr NFSPROC_READ, 1219336Sdfr NFSPROC_NOOP, 1229336Sdfr NFSPROC_WRITE, 1239336Sdfr NFSPROC_CREATE, 1249336Sdfr NFSPROC_REMOVE, 1259336Sdfr NFSPROC_RENAME, 1269336Sdfr NFSPROC_LINK, 1279336Sdfr NFSPROC_SYMLINK, 1289336Sdfr NFSPROC_MKDIR, 1299336Sdfr NFSPROC_RMDIR, 1309336Sdfr NFSPROC_READDIR, 1319336Sdfr NFSPROC_FSSTAT, 1329336Sdfr NFSPROC_NOOP, 1339336Sdfr NFSPROC_NOOP, 1349336Sdfr NFSPROC_NOOP, 1359336Sdfr NFSPROC_NOOP, 1369336Sdfr NFSPROC_NOOP, 1379336Sdfr NFSPROC_NOOP, 1389336Sdfr NFSPROC_NOOP, 1399336Sdfr NFSPROC_NOOP 1409336Sdfr}; 1419336Sdfr 1429336Sdfr/* 1439336Sdfr * and the reverse mapping from generic to Version 2 procedure numbers 1449336Sdfr */ 1459336Sdfrint nfsv2_procid[NFS_NPROCS] = { 1469336Sdfr NFSV2PROC_NULL, 1479336Sdfr NFSV2PROC_GETATTR, 1489336Sdfr NFSV2PROC_SETATTR, 1499336Sdfr NFSV2PROC_LOOKUP, 1509336Sdfr NFSV2PROC_NOOP, 1519336Sdfr NFSV2PROC_READLINK, 1529336Sdfr NFSV2PROC_READ, 1539336Sdfr NFSV2PROC_WRITE, 1549336Sdfr NFSV2PROC_CREATE, 1559336Sdfr NFSV2PROC_MKDIR, 1569336Sdfr NFSV2PROC_SYMLINK, 1579336Sdfr NFSV2PROC_CREATE, 1589336Sdfr NFSV2PROC_REMOVE, 1599336Sdfr NFSV2PROC_RMDIR, 1609336Sdfr NFSV2PROC_RENAME, 1619336Sdfr NFSV2PROC_LINK, 1629336Sdfr NFSV2PROC_READDIR, 1639336Sdfr NFSV2PROC_NOOP, 1649336Sdfr NFSV2PROC_STATFS, 1659336Sdfr NFSV2PROC_NOOP, 1669336Sdfr NFSV2PROC_NOOP, 1679336Sdfr NFSV2PROC_NOOP, 1689336Sdfr NFSV2PROC_NOOP, 1699336Sdfr NFSV2PROC_NOOP, 1709336Sdfr NFSV2PROC_NOOP, 1719336Sdfr NFSV2PROC_NOOP, 1729336Sdfr}; 1739336Sdfr 1749336Sdfr/* 1759336Sdfr * Maps errno values to nfs error numbers. 1769336Sdfr * Use NFSERR_IO as the catch all for ones not specifically defined in 1779336Sdfr * RFC 1094. 1789336Sdfr */ 1799336Sdfrstatic u_char nfsrv_v2errmap[ELAST] = { 1809336Sdfr NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1819336Sdfr NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1829336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 1839336Sdfr NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 1849336Sdfr NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1859336Sdfr NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 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_IO, NFSERR_IO, NFSERR_IO, 1909336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1919336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1929336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 1939336Sdfr NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 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, 1979336Sdfr}; 1989336Sdfr 1999336Sdfr/* 2009336Sdfr * Maps errno values to nfs error numbers. 2019336Sdfr * Although it is not obvious whether or not NFS clients really care if 2029336Sdfr * a returned error value is in the specified list for the procedure, the 2039336Sdfr * safest thing to do is filter them appropriately. For Version 2, the 2049336Sdfr * X/Open XNFS document is the only specification that defines error values 2059336Sdfr * for each RPC (The RFC simply lists all possible error values for all RPCs), 2069336Sdfr * so I have decided to not do this for Version 2. 2079336Sdfr * The first entry is the default error return and the rest are the valid 2089336Sdfr * errors for that RPC in increasing numeric order. 2099336Sdfr */ 2109336Sdfrstatic short nfsv3err_null[] = { 2119336Sdfr 0, 2129336Sdfr 0, 2139336Sdfr}; 2149336Sdfr 2159336Sdfrstatic short nfsv3err_getattr[] = { 2169336Sdfr NFSERR_IO, 2179336Sdfr NFSERR_IO, 2189336Sdfr NFSERR_STALE, 2199336Sdfr NFSERR_BADHANDLE, 2209336Sdfr NFSERR_SERVERFAULT, 2219336Sdfr 0, 2229336Sdfr}; 2239336Sdfr 2249336Sdfrstatic short nfsv3err_setattr[] = { 2259336Sdfr NFSERR_IO, 2269336Sdfr NFSERR_PERM, 2279336Sdfr NFSERR_IO, 2289336Sdfr NFSERR_ACCES, 2299336Sdfr NFSERR_INVAL, 2309336Sdfr NFSERR_NOSPC, 2319336Sdfr NFSERR_ROFS, 2329336Sdfr NFSERR_DQUOT, 2339336Sdfr NFSERR_STALE, 2349336Sdfr NFSERR_BADHANDLE, 2359336Sdfr NFSERR_NOT_SYNC, 2369336Sdfr NFSERR_SERVERFAULT, 2379336Sdfr 0, 2389336Sdfr}; 2399336Sdfr 2409336Sdfrstatic short nfsv3err_lookup[] = { 2419336Sdfr NFSERR_IO, 2429336Sdfr NFSERR_NOENT, 2439336Sdfr NFSERR_IO, 2449336Sdfr NFSERR_ACCES, 2459336Sdfr NFSERR_NOTDIR, 2469336Sdfr NFSERR_NAMETOL, 2479336Sdfr NFSERR_STALE, 2489336Sdfr NFSERR_BADHANDLE, 2499336Sdfr NFSERR_SERVERFAULT, 2509336Sdfr 0, 2519336Sdfr}; 2529336Sdfr 2539336Sdfrstatic short nfsv3err_access[] = { 2549336Sdfr NFSERR_IO, 2559336Sdfr NFSERR_IO, 2569336Sdfr NFSERR_STALE, 2579336Sdfr NFSERR_BADHANDLE, 2589336Sdfr NFSERR_SERVERFAULT, 2599336Sdfr 0, 2609336Sdfr}; 2619336Sdfr 2629336Sdfrstatic short nfsv3err_readlink[] = { 2639336Sdfr NFSERR_IO, 2649336Sdfr NFSERR_IO, 2659336Sdfr NFSERR_ACCES, 2669336Sdfr NFSERR_INVAL, 2679336Sdfr NFSERR_STALE, 2689336Sdfr NFSERR_BADHANDLE, 2699336Sdfr NFSERR_NOTSUPP, 2709336Sdfr NFSERR_SERVERFAULT, 2719336Sdfr 0, 2729336Sdfr}; 2739336Sdfr 2749336Sdfrstatic short nfsv3err_read[] = { 2759336Sdfr NFSERR_IO, 2769336Sdfr NFSERR_IO, 2779336Sdfr NFSERR_NXIO, 2789336Sdfr NFSERR_ACCES, 2799336Sdfr NFSERR_INVAL, 2809336Sdfr NFSERR_STALE, 2819336Sdfr NFSERR_BADHANDLE, 2829336Sdfr NFSERR_SERVERFAULT, 2839336Sdfr 0, 2849336Sdfr}; 2859336Sdfr 2869336Sdfrstatic short nfsv3err_write[] = { 2879336Sdfr NFSERR_IO, 2889336Sdfr NFSERR_IO, 2899336Sdfr NFSERR_ACCES, 2909336Sdfr NFSERR_INVAL, 2919336Sdfr NFSERR_FBIG, 2929336Sdfr NFSERR_NOSPC, 2939336Sdfr NFSERR_ROFS, 2949336Sdfr NFSERR_DQUOT, 2959336Sdfr NFSERR_STALE, 2969336Sdfr NFSERR_BADHANDLE, 2979336Sdfr NFSERR_SERVERFAULT, 2989336Sdfr 0, 2999336Sdfr}; 3009336Sdfr 3019336Sdfrstatic short nfsv3err_create[] = { 3029336Sdfr NFSERR_IO, 3039336Sdfr NFSERR_IO, 3049336Sdfr NFSERR_ACCES, 3059336Sdfr NFSERR_EXIST, 3069336Sdfr NFSERR_NOTDIR, 3079336Sdfr NFSERR_NOSPC, 3089336Sdfr NFSERR_ROFS, 3099336Sdfr NFSERR_NAMETOL, 3109336Sdfr NFSERR_DQUOT, 3119336Sdfr NFSERR_STALE, 3129336Sdfr NFSERR_BADHANDLE, 3139336Sdfr NFSERR_NOTSUPP, 3149336Sdfr NFSERR_SERVERFAULT, 3159336Sdfr 0, 3169336Sdfr}; 3179336Sdfr 3189336Sdfrstatic short nfsv3err_mkdir[] = { 3199336Sdfr NFSERR_IO, 3209336Sdfr NFSERR_IO, 3219336Sdfr NFSERR_ACCES, 3229336Sdfr NFSERR_EXIST, 3239336Sdfr NFSERR_NOTDIR, 3249336Sdfr NFSERR_NOSPC, 3259336Sdfr NFSERR_ROFS, 3269336Sdfr NFSERR_NAMETOL, 3279336Sdfr NFSERR_DQUOT, 3289336Sdfr NFSERR_STALE, 3299336Sdfr NFSERR_BADHANDLE, 3309336Sdfr NFSERR_NOTSUPP, 3319336Sdfr NFSERR_SERVERFAULT, 3329336Sdfr 0, 3339336Sdfr}; 3349336Sdfr 3359336Sdfrstatic short nfsv3err_symlink[] = { 3369336Sdfr NFSERR_IO, 3379336Sdfr NFSERR_IO, 3389336Sdfr NFSERR_ACCES, 3399336Sdfr NFSERR_EXIST, 3409336Sdfr NFSERR_NOTDIR, 3419336Sdfr NFSERR_NOSPC, 3429336Sdfr NFSERR_ROFS, 3439336Sdfr NFSERR_NAMETOL, 3449336Sdfr NFSERR_DQUOT, 3459336Sdfr NFSERR_STALE, 3469336Sdfr NFSERR_BADHANDLE, 3479336Sdfr NFSERR_NOTSUPP, 3489336Sdfr NFSERR_SERVERFAULT, 3499336Sdfr 0, 3509336Sdfr}; 3519336Sdfr 3529336Sdfrstatic short nfsv3err_mknod[] = { 3539336Sdfr NFSERR_IO, 3549336Sdfr NFSERR_IO, 3559336Sdfr NFSERR_ACCES, 3569336Sdfr NFSERR_EXIST, 3579336Sdfr NFSERR_NOTDIR, 3589336Sdfr NFSERR_NOSPC, 3599336Sdfr NFSERR_ROFS, 3609336Sdfr NFSERR_NAMETOL, 3619336Sdfr NFSERR_DQUOT, 3629336Sdfr NFSERR_STALE, 3639336Sdfr NFSERR_BADHANDLE, 3649336Sdfr NFSERR_NOTSUPP, 3659336Sdfr NFSERR_SERVERFAULT, 3669336Sdfr NFSERR_BADTYPE, 3679336Sdfr 0, 3689336Sdfr}; 3699336Sdfr 3709336Sdfrstatic short nfsv3err_remove[] = { 3719336Sdfr NFSERR_IO, 3729336Sdfr NFSERR_NOENT, 3739336Sdfr NFSERR_IO, 3749336Sdfr NFSERR_ACCES, 3759336Sdfr NFSERR_NOTDIR, 3769336Sdfr NFSERR_ROFS, 3779336Sdfr NFSERR_NAMETOL, 3789336Sdfr NFSERR_STALE, 3799336Sdfr NFSERR_BADHANDLE, 3809336Sdfr NFSERR_SERVERFAULT, 3819336Sdfr 0, 3829336Sdfr}; 3839336Sdfr 3849336Sdfrstatic short nfsv3err_rmdir[] = { 3859336Sdfr NFSERR_IO, 3869336Sdfr NFSERR_NOENT, 3879336Sdfr NFSERR_IO, 3889336Sdfr NFSERR_ACCES, 3899336Sdfr NFSERR_EXIST, 3909336Sdfr NFSERR_NOTDIR, 3919336Sdfr NFSERR_INVAL, 3929336Sdfr NFSERR_ROFS, 3939336Sdfr NFSERR_NAMETOL, 3949336Sdfr NFSERR_NOTEMPTY, 3959336Sdfr NFSERR_STALE, 3969336Sdfr NFSERR_BADHANDLE, 3979336Sdfr NFSERR_NOTSUPP, 3989336Sdfr NFSERR_SERVERFAULT, 3999336Sdfr 0, 4009336Sdfr}; 4019336Sdfr 4029336Sdfrstatic short nfsv3err_rename[] = { 4039336Sdfr NFSERR_IO, 4049336Sdfr NFSERR_NOENT, 4059336Sdfr NFSERR_IO, 4069336Sdfr NFSERR_ACCES, 4079336Sdfr NFSERR_EXIST, 4089336Sdfr NFSERR_XDEV, 4099336Sdfr NFSERR_NOTDIR, 4109336Sdfr NFSERR_ISDIR, 4119336Sdfr NFSERR_INVAL, 4129336Sdfr NFSERR_NOSPC, 4139336Sdfr NFSERR_ROFS, 4149336Sdfr NFSERR_MLINK, 4159336Sdfr NFSERR_NAMETOL, 4169336Sdfr NFSERR_NOTEMPTY, 4179336Sdfr NFSERR_DQUOT, 4189336Sdfr NFSERR_STALE, 4199336Sdfr NFSERR_BADHANDLE, 4209336Sdfr NFSERR_NOTSUPP, 4219336Sdfr NFSERR_SERVERFAULT, 4229336Sdfr 0, 4239336Sdfr}; 4249336Sdfr 4259336Sdfrstatic short nfsv3err_link[] = { 4269336Sdfr NFSERR_IO, 4279336Sdfr NFSERR_IO, 4289336Sdfr NFSERR_ACCES, 4299336Sdfr NFSERR_EXIST, 4309336Sdfr NFSERR_XDEV, 4319336Sdfr NFSERR_NOTDIR, 4329336Sdfr NFSERR_INVAL, 4339336Sdfr NFSERR_NOSPC, 4349336Sdfr NFSERR_ROFS, 4359336Sdfr NFSERR_MLINK, 4369336Sdfr NFSERR_NAMETOL, 4379336Sdfr NFSERR_DQUOT, 4389336Sdfr NFSERR_STALE, 4399336Sdfr NFSERR_BADHANDLE, 4409336Sdfr NFSERR_NOTSUPP, 4419336Sdfr NFSERR_SERVERFAULT, 4429336Sdfr 0, 4439336Sdfr}; 4449336Sdfr 4459336Sdfrstatic short nfsv3err_readdir[] = { 4469336Sdfr NFSERR_IO, 4479336Sdfr NFSERR_IO, 4489336Sdfr NFSERR_ACCES, 4499336Sdfr NFSERR_NOTDIR, 4509336Sdfr NFSERR_STALE, 4519336Sdfr NFSERR_BADHANDLE, 4529336Sdfr NFSERR_BAD_COOKIE, 4539336Sdfr NFSERR_TOOSMALL, 4549336Sdfr NFSERR_SERVERFAULT, 4559336Sdfr 0, 4569336Sdfr}; 4579336Sdfr 4589336Sdfrstatic short nfsv3err_readdirplus[] = { 4599336Sdfr NFSERR_IO, 4609336Sdfr NFSERR_IO, 4619336Sdfr NFSERR_ACCES, 4629336Sdfr NFSERR_NOTDIR, 4639336Sdfr NFSERR_STALE, 4649336Sdfr NFSERR_BADHANDLE, 4659336Sdfr NFSERR_BAD_COOKIE, 4669336Sdfr NFSERR_NOTSUPP, 4679336Sdfr NFSERR_TOOSMALL, 4689336Sdfr NFSERR_SERVERFAULT, 4699336Sdfr 0, 4709336Sdfr}; 4719336Sdfr 4729336Sdfrstatic short nfsv3err_fsstat[] = { 4739336Sdfr NFSERR_IO, 4749336Sdfr NFSERR_IO, 4759336Sdfr NFSERR_STALE, 4769336Sdfr NFSERR_BADHANDLE, 4779336Sdfr NFSERR_SERVERFAULT, 4789336Sdfr 0, 4799336Sdfr}; 4809336Sdfr 4819336Sdfrstatic short nfsv3err_fsinfo[] = { 4829336Sdfr NFSERR_STALE, 4839336Sdfr NFSERR_STALE, 4849336Sdfr NFSERR_BADHANDLE, 4859336Sdfr NFSERR_SERVERFAULT, 4869336Sdfr 0, 4879336Sdfr}; 4889336Sdfr 4899336Sdfrstatic short nfsv3err_pathconf[] = { 4909336Sdfr NFSERR_STALE, 4919336Sdfr NFSERR_STALE, 4929336Sdfr NFSERR_BADHANDLE, 4939336Sdfr NFSERR_SERVERFAULT, 4949336Sdfr 0, 4959336Sdfr}; 4969336Sdfr 4979336Sdfrstatic short nfsv3err_commit[] = { 4989336Sdfr NFSERR_IO, 4999336Sdfr NFSERR_IO, 5009336Sdfr NFSERR_STALE, 5019336Sdfr NFSERR_BADHANDLE, 5029336Sdfr NFSERR_SERVERFAULT, 5039336Sdfr 0, 5049336Sdfr}; 5059336Sdfr 5069336Sdfrstatic short *nfsrv_v3errmap[] = { 5079336Sdfr nfsv3err_null, 5089336Sdfr nfsv3err_getattr, 5099336Sdfr nfsv3err_setattr, 5109336Sdfr nfsv3err_lookup, 5119336Sdfr nfsv3err_access, 5129336Sdfr nfsv3err_readlink, 5139336Sdfr nfsv3err_read, 5149336Sdfr nfsv3err_write, 5159336Sdfr nfsv3err_create, 5169336Sdfr nfsv3err_mkdir, 5179336Sdfr nfsv3err_symlink, 5189336Sdfr nfsv3err_mknod, 5199336Sdfr nfsv3err_remove, 5209336Sdfr nfsv3err_rmdir, 5219336Sdfr nfsv3err_rename, 5229336Sdfr nfsv3err_link, 5239336Sdfr nfsv3err_readdir, 5249336Sdfr nfsv3err_readdirplus, 5259336Sdfr nfsv3err_fsstat, 5269336Sdfr nfsv3err_fsinfo, 5279336Sdfr nfsv3err_pathconf, 5289336Sdfr nfsv3err_commit, 5299336Sdfr}; 5309336Sdfr 5311541Srgrimesextern struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON]; 5321541Srgrimesextern struct nfsrtt nfsrtt; 5331541Srgrimesextern time_t nqnfsstarttime; 5341541Srgrimesextern int nqsrv_clockskew; 5351541Srgrimesextern int nqsrv_writeslack; 5361541Srgrimesextern int nqsrv_maxlease; 5379336Sdfrextern struct nfsstats nfsstats; 5389336Sdfrextern int nqnfs_piggy[NFS_NPROCS]; 5399336Sdfrextern nfstype nfsv2_type[9]; 5409336Sdfrextern nfstype nfsv3_type[9]; 5419336Sdfrextern struct nfsnodehashhead *nfsnodehashtbl; 5429336Sdfrextern u_long nfsnodehash; 5431541Srgrimes 5442997Swollman#ifdef VFS_LKM 5452997Swollmanstruct getfh_args; 5462997Swollmanextern int getfh(struct proc *, struct getfh_args *, int *); 5472997Swollmanstruct nfssvc_args; 5482997Swollmanextern int nfssvc(struct proc *, struct nfssvc_args *, int *); 5492997Swollman#endif 5502997Swollman 5513664SphkLIST_HEAD(nfsnodehashhead, nfsnode); 5523664Sphk 5531541Srgrimes/* 5541541Srgrimes * Create the header for an rpc request packet 5551541Srgrimes * The hsiz is the size of the rest of the nfs request header. 5561541Srgrimes * (just used to decide if a cluster is a good idea) 5571541Srgrimes */ 5581541Srgrimesstruct mbuf * 5591541Srgrimesnfsm_reqh(vp, procid, hsiz, bposp) 5601541Srgrimes struct vnode *vp; 5611541Srgrimes u_long procid; 5621541Srgrimes int hsiz; 5631541Srgrimes caddr_t *bposp; 5641541Srgrimes{ 5651541Srgrimes register struct mbuf *mb; 5661541Srgrimes register u_long *tl; 5671541Srgrimes register caddr_t bpos; 5681541Srgrimes struct mbuf *mb2; 5691541Srgrimes struct nfsmount *nmp; 5701541Srgrimes int nqflag; 5711541Srgrimes 5721541Srgrimes MGET(mb, M_WAIT, MT_DATA); 5731541Srgrimes if (hsiz >= MINCLSIZE) 5741541Srgrimes MCLGET(mb, M_WAIT); 5751541Srgrimes mb->m_len = 0; 5761541Srgrimes bpos = mtod(mb, caddr_t); 5778876Srgrimes 5781541Srgrimes /* 5791541Srgrimes * For NQNFS, add lease request. 5801541Srgrimes */ 5811541Srgrimes if (vp) { 5821541Srgrimes nmp = VFSTONFS(vp->v_mount); 5831541Srgrimes if (nmp->nm_flag & NFSMNT_NQNFS) { 5841541Srgrimes nqflag = NQNFS_NEEDLEASE(vp, procid); 5851541Srgrimes if (nqflag) { 5861541Srgrimes nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); 5871541Srgrimes *tl++ = txdr_unsigned(nqflag); 5881541Srgrimes *tl = txdr_unsigned(nmp->nm_leaseterm); 5891541Srgrimes } else { 5901541Srgrimes nfsm_build(tl, u_long *, NFSX_UNSIGNED); 5911541Srgrimes *tl = 0; 5921541Srgrimes } 5931541Srgrimes } 5941541Srgrimes } 5951541Srgrimes /* Finally, return values */ 5961541Srgrimes *bposp = bpos; 5971541Srgrimes return (mb); 5981541Srgrimes} 5991541Srgrimes 6001541Srgrimes/* 6011541Srgrimes * Build the RPC header and fill in the authorization info. 6021541Srgrimes * The authorization string argument is only used when the credentials 6031541Srgrimes * come from outside of the kernel. 6041541Srgrimes * Returns the head of the mbuf list. 6051541Srgrimes */ 6061541Srgrimesstruct mbuf * 6079336Sdfrnfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 6089336Sdfr verf_str, mrest, mrest_len, mbp, xidp) 6091541Srgrimes register struct ucred *cr; 6109336Sdfr int nmflag; 6111541Srgrimes int procid; 6121541Srgrimes int auth_type; 6131541Srgrimes int auth_len; 6141541Srgrimes char *auth_str; 6159336Sdfr int verf_len; 6169336Sdfr char *verf_str; 6171541Srgrimes struct mbuf *mrest; 6181541Srgrimes int mrest_len; 6191541Srgrimes struct mbuf **mbp; 6201541Srgrimes u_long *xidp; 6211541Srgrimes{ 6221541Srgrimes register struct mbuf *mb; 6231541Srgrimes register u_long *tl; 6241541Srgrimes register caddr_t bpos; 6251541Srgrimes register int i; 6261541Srgrimes struct mbuf *mreq, *mb2; 6271541Srgrimes int siz, grpsiz, authsiz; 6281541Srgrimes 6291541Srgrimes authsiz = nfsm_rndup(auth_len); 6301541Srgrimes MGETHDR(mb, M_WAIT, MT_DATA); 6319336Sdfr if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 6321541Srgrimes MCLGET(mb, M_WAIT); 6339336Sdfr } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 6349336Sdfr MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 6351541Srgrimes } else { 6369336Sdfr MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 6371541Srgrimes } 6381541Srgrimes mb->m_len = 0; 6391541Srgrimes mreq = mb; 6401541Srgrimes bpos = mtod(mb, caddr_t); 6411541Srgrimes 6421541Srgrimes /* 6431541Srgrimes * First the RPC header. 6441541Srgrimes */ 6459336Sdfr nfsm_build(tl, u_long *, 8 * NFSX_UNSIGNED); 6461541Srgrimes if (++nfs_xid == 0) 6471541Srgrimes nfs_xid++; 6481541Srgrimes *tl++ = *xidp = txdr_unsigned(nfs_xid); 6491541Srgrimes *tl++ = rpc_call; 6501541Srgrimes *tl++ = rpc_vers; 6519336Sdfr if (nmflag & NFSMNT_NQNFS) { 6521541Srgrimes *tl++ = txdr_unsigned(NQNFS_PROG); 6539336Sdfr *tl++ = txdr_unsigned(NQNFS_VER3); 6541541Srgrimes } else { 6551541Srgrimes *tl++ = txdr_unsigned(NFS_PROG); 6569336Sdfr if (nmflag & NFSMNT_NFSV3) 6579336Sdfr *tl++ = txdr_unsigned(NFS_VER3); 6589336Sdfr else 6599336Sdfr *tl++ = txdr_unsigned(NFS_VER2); 6601541Srgrimes } 6619336Sdfr if (nmflag & NFSMNT_NFSV3) 6629336Sdfr *tl++ = txdr_unsigned(procid); 6639336Sdfr else 6649336Sdfr *tl++ = txdr_unsigned(nfsv2_procid[procid]); 6651541Srgrimes 6661541Srgrimes /* 6671541Srgrimes * And then the authorization cred. 6681541Srgrimes */ 6691541Srgrimes *tl++ = txdr_unsigned(auth_type); 6701541Srgrimes *tl = txdr_unsigned(authsiz); 6711541Srgrimes switch (auth_type) { 6721541Srgrimes case RPCAUTH_UNIX: 6731541Srgrimes nfsm_build(tl, u_long *, auth_len); 6741541Srgrimes *tl++ = 0; /* stamp ?? */ 6751541Srgrimes *tl++ = 0; /* NULL hostname */ 6761541Srgrimes *tl++ = txdr_unsigned(cr->cr_uid); 6771541Srgrimes *tl++ = txdr_unsigned(cr->cr_groups[0]); 6781541Srgrimes grpsiz = (auth_len >> 2) - 5; 6791541Srgrimes *tl++ = txdr_unsigned(grpsiz); 6801541Srgrimes for (i = 1; i <= grpsiz; i++) 6811541Srgrimes *tl++ = txdr_unsigned(cr->cr_groups[i]); 6821541Srgrimes break; 6839336Sdfr case RPCAUTH_KERB4: 6841541Srgrimes siz = auth_len; 6851541Srgrimes while (siz > 0) { 6861541Srgrimes if (M_TRAILINGSPACE(mb) == 0) { 6871541Srgrimes MGET(mb2, M_WAIT, MT_DATA); 6881541Srgrimes if (siz >= MINCLSIZE) 6891541Srgrimes MCLGET(mb2, M_WAIT); 6901541Srgrimes mb->m_next = mb2; 6911541Srgrimes mb = mb2; 6921541Srgrimes mb->m_len = 0; 6931541Srgrimes bpos = mtod(mb, caddr_t); 6941541Srgrimes } 6951541Srgrimes i = min(siz, M_TRAILINGSPACE(mb)); 6961541Srgrimes bcopy(auth_str, bpos, i); 6971541Srgrimes mb->m_len += i; 6981541Srgrimes auth_str += i; 6991541Srgrimes bpos += i; 7001541Srgrimes siz -= i; 7011541Srgrimes } 7021541Srgrimes if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 7031541Srgrimes for (i = 0; i < siz; i++) 7041541Srgrimes *bpos++ = '\0'; 7051541Srgrimes mb->m_len += siz; 7061541Srgrimes } 7071541Srgrimes break; 7081541Srgrimes }; 7099336Sdfr 7109336Sdfr /* 7119336Sdfr * And the verifier... 7129336Sdfr */ 7139336Sdfr nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); 7149336Sdfr if (verf_str) { 7159336Sdfr *tl++ = txdr_unsigned(RPCAUTH_KERB4); 7169336Sdfr *tl = txdr_unsigned(verf_len); 7179336Sdfr siz = verf_len; 7189336Sdfr while (siz > 0) { 7199336Sdfr if (M_TRAILINGSPACE(mb) == 0) { 7209336Sdfr MGET(mb2, M_WAIT, MT_DATA); 7219336Sdfr if (siz >= MINCLSIZE) 7229336Sdfr MCLGET(mb2, M_WAIT); 7239336Sdfr mb->m_next = mb2; 7249336Sdfr mb = mb2; 7259336Sdfr mb->m_len = 0; 7269336Sdfr bpos = mtod(mb, caddr_t); 7279336Sdfr } 7289336Sdfr i = min(siz, M_TRAILINGSPACE(mb)); 7299336Sdfr bcopy(verf_str, bpos, i); 7309336Sdfr mb->m_len += i; 7319336Sdfr verf_str += i; 7329336Sdfr bpos += i; 7339336Sdfr siz -= i; 7349336Sdfr } 7359336Sdfr if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 7369336Sdfr for (i = 0; i < siz; i++) 7379336Sdfr *bpos++ = '\0'; 7389336Sdfr mb->m_len += siz; 7399336Sdfr } 7409336Sdfr } else { 7419336Sdfr *tl++ = txdr_unsigned(RPCAUTH_NULL); 7429336Sdfr *tl = 0; 7439336Sdfr } 7441541Srgrimes mb->m_next = mrest; 7459336Sdfr mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 7461541Srgrimes mreq->m_pkthdr.rcvif = (struct ifnet *)0; 7471541Srgrimes *mbp = mb; 7481541Srgrimes return (mreq); 7491541Srgrimes} 7501541Srgrimes 7511541Srgrimes/* 7521541Srgrimes * copies mbuf chain to the uio scatter/gather list 7531541Srgrimes */ 7541549Srgrimesint 7551541Srgrimesnfsm_mbuftouio(mrep, uiop, siz, dpos) 7561541Srgrimes struct mbuf **mrep; 7571541Srgrimes register struct uio *uiop; 7581541Srgrimes int siz; 7591541Srgrimes caddr_t *dpos; 7601541Srgrimes{ 7611541Srgrimes register char *mbufcp, *uiocp; 7621541Srgrimes register int xfer, left, len; 7631541Srgrimes register struct mbuf *mp; 7641541Srgrimes long uiosiz, rem; 7651541Srgrimes int error = 0; 7661541Srgrimes 7671541Srgrimes mp = *mrep; 7681541Srgrimes mbufcp = *dpos; 7691541Srgrimes len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 7701541Srgrimes rem = nfsm_rndup(siz)-siz; 7711541Srgrimes while (siz > 0) { 7721541Srgrimes if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 7731541Srgrimes return (EFBIG); 7741541Srgrimes left = uiop->uio_iov->iov_len; 7751541Srgrimes uiocp = uiop->uio_iov->iov_base; 7761541Srgrimes if (left > siz) 7771541Srgrimes left = siz; 7781541Srgrimes uiosiz = left; 7791541Srgrimes while (left > 0) { 7801541Srgrimes while (len == 0) { 7811541Srgrimes mp = mp->m_next; 7821541Srgrimes if (mp == NULL) 7831541Srgrimes return (EBADRPC); 7841541Srgrimes mbufcp = mtod(mp, caddr_t); 7851541Srgrimes len = mp->m_len; 7861541Srgrimes } 7871541Srgrimes xfer = (left > len) ? len : left; 7881541Srgrimes#ifdef notdef 7891541Srgrimes /* Not Yet.. */ 7901541Srgrimes if (uiop->uio_iov->iov_op != NULL) 7911541Srgrimes (*(uiop->uio_iov->iov_op)) 7921541Srgrimes (mbufcp, uiocp, xfer); 7931541Srgrimes else 7941541Srgrimes#endif 7951541Srgrimes if (uiop->uio_segflg == UIO_SYSSPACE) 7961541Srgrimes bcopy(mbufcp, uiocp, xfer); 7971541Srgrimes else 7981541Srgrimes copyout(mbufcp, uiocp, xfer); 7991541Srgrimes left -= xfer; 8001541Srgrimes len -= xfer; 8011541Srgrimes mbufcp += xfer; 8021541Srgrimes uiocp += xfer; 8031541Srgrimes uiop->uio_offset += xfer; 8041541Srgrimes uiop->uio_resid -= xfer; 8051541Srgrimes } 8061541Srgrimes if (uiop->uio_iov->iov_len <= siz) { 8071541Srgrimes uiop->uio_iovcnt--; 8081541Srgrimes uiop->uio_iov++; 8091541Srgrimes } else { 8101541Srgrimes uiop->uio_iov->iov_base += uiosiz; 8111541Srgrimes uiop->uio_iov->iov_len -= uiosiz; 8121541Srgrimes } 8131541Srgrimes siz -= uiosiz; 8141541Srgrimes } 8151541Srgrimes *dpos = mbufcp; 8161541Srgrimes *mrep = mp; 8171541Srgrimes if (rem > 0) { 8181541Srgrimes if (len < rem) 8191541Srgrimes error = nfs_adv(mrep, dpos, rem, len); 8201541Srgrimes else 8211541Srgrimes *dpos += rem; 8221541Srgrimes } 8231541Srgrimes return (error); 8241541Srgrimes} 8251541Srgrimes 8261541Srgrimes/* 8271541Srgrimes * copies a uio scatter/gather list to an mbuf chain... 8281541Srgrimes */ 8291549Srgrimesint 8301541Srgrimesnfsm_uiotombuf(uiop, mq, siz, bpos) 8311541Srgrimes register struct uio *uiop; 8321541Srgrimes struct mbuf **mq; 8331541Srgrimes int siz; 8341541Srgrimes caddr_t *bpos; 8351541Srgrimes{ 8361541Srgrimes register char *uiocp; 8371541Srgrimes register struct mbuf *mp, *mp2; 8381541Srgrimes register int xfer, left, mlen; 8391541Srgrimes int uiosiz, clflg, rem; 8401541Srgrimes char *cp; 8411541Srgrimes 8421541Srgrimes if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 8431541Srgrimes clflg = 1; 8441541Srgrimes else 8451541Srgrimes clflg = 0; 8461541Srgrimes rem = nfsm_rndup(siz)-siz; 8471541Srgrimes mp = mp2 = *mq; 8481541Srgrimes while (siz > 0) { 8491541Srgrimes if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 8501541Srgrimes return (EINVAL); 8511541Srgrimes left = uiop->uio_iov->iov_len; 8521541Srgrimes uiocp = uiop->uio_iov->iov_base; 8531541Srgrimes if (left > siz) 8541541Srgrimes left = siz; 8551541Srgrimes uiosiz = left; 8561541Srgrimes while (left > 0) { 8571541Srgrimes mlen = M_TRAILINGSPACE(mp); 8581541Srgrimes if (mlen == 0) { 8591541Srgrimes MGET(mp, M_WAIT, MT_DATA); 8601541Srgrimes if (clflg) 8611541Srgrimes MCLGET(mp, M_WAIT); 8621541Srgrimes mp->m_len = 0; 8631541Srgrimes mp2->m_next = mp; 8641541Srgrimes mp2 = mp; 8651541Srgrimes mlen = M_TRAILINGSPACE(mp); 8661541Srgrimes } 8671541Srgrimes xfer = (left > mlen) ? mlen : left; 8681541Srgrimes#ifdef notdef 8691541Srgrimes /* Not Yet.. */ 8701541Srgrimes if (uiop->uio_iov->iov_op != NULL) 8711541Srgrimes (*(uiop->uio_iov->iov_op)) 8721541Srgrimes (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 8731541Srgrimes else 8741541Srgrimes#endif 8751541Srgrimes if (uiop->uio_segflg == UIO_SYSSPACE) 8761541Srgrimes bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 8771541Srgrimes else 8781541Srgrimes copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 8791541Srgrimes mp->m_len += xfer; 8801541Srgrimes left -= xfer; 8811541Srgrimes uiocp += xfer; 8821541Srgrimes uiop->uio_offset += xfer; 8831541Srgrimes uiop->uio_resid -= xfer; 8841541Srgrimes } 8851541Srgrimes if (uiop->uio_iov->iov_len <= siz) { 8861541Srgrimes uiop->uio_iovcnt--; 8871541Srgrimes uiop->uio_iov++; 8881541Srgrimes } else { 8891541Srgrimes uiop->uio_iov->iov_base += uiosiz; 8901541Srgrimes uiop->uio_iov->iov_len -= uiosiz; 8911541Srgrimes } 8921541Srgrimes siz -= uiosiz; 8931541Srgrimes } 8941541Srgrimes if (rem > 0) { 8951541Srgrimes if (rem > M_TRAILINGSPACE(mp)) { 8961541Srgrimes MGET(mp, M_WAIT, MT_DATA); 8971541Srgrimes mp->m_len = 0; 8981541Srgrimes mp2->m_next = mp; 8991541Srgrimes } 9001541Srgrimes cp = mtod(mp, caddr_t)+mp->m_len; 9011541Srgrimes for (left = 0; left < rem; left++) 9021541Srgrimes *cp++ = '\0'; 9031541Srgrimes mp->m_len += rem; 9041541Srgrimes *bpos = cp; 9051541Srgrimes } else 9061541Srgrimes *bpos = mtod(mp, caddr_t)+mp->m_len; 9071541Srgrimes *mq = mp; 9081541Srgrimes return (0); 9091541Srgrimes} 9101541Srgrimes 9111541Srgrimes/* 9121541Srgrimes * Help break down an mbuf chain by setting the first siz bytes contiguous 9131541Srgrimes * pointed to by returned val. 9141541Srgrimes * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 9151541Srgrimes * cases. (The macros use the vars. dpos and dpos2) 9161541Srgrimes */ 9171549Srgrimesint 9181541Srgrimesnfsm_disct(mdp, dposp, siz, left, cp2) 9191541Srgrimes struct mbuf **mdp; 9201541Srgrimes caddr_t *dposp; 9211541Srgrimes int siz; 9221541Srgrimes int left; 9231541Srgrimes caddr_t *cp2; 9241541Srgrimes{ 9251541Srgrimes register struct mbuf *mp, *mp2; 9261541Srgrimes register int siz2, xfer; 9271541Srgrimes register caddr_t p; 9281541Srgrimes 9291541Srgrimes mp = *mdp; 9301541Srgrimes while (left == 0) { 9311541Srgrimes *mdp = mp = mp->m_next; 9321541Srgrimes if (mp == NULL) 9331541Srgrimes return (EBADRPC); 9341541Srgrimes left = mp->m_len; 9351541Srgrimes *dposp = mtod(mp, caddr_t); 9361541Srgrimes } 9371541Srgrimes if (left >= siz) { 9381541Srgrimes *cp2 = *dposp; 9391541Srgrimes *dposp += siz; 9401541Srgrimes } else if (mp->m_next == NULL) { 9411541Srgrimes return (EBADRPC); 9421541Srgrimes } else if (siz > MHLEN) { 9431541Srgrimes panic("nfs S too big"); 9441541Srgrimes } else { 9451541Srgrimes MGET(mp2, M_WAIT, MT_DATA); 9461541Srgrimes mp2->m_next = mp->m_next; 9471541Srgrimes mp->m_next = mp2; 9481541Srgrimes mp->m_len -= left; 9491541Srgrimes mp = mp2; 9501541Srgrimes *cp2 = p = mtod(mp, caddr_t); 9511541Srgrimes bcopy(*dposp, p, left); /* Copy what was left */ 9521541Srgrimes siz2 = siz-left; 9531541Srgrimes p += left; 9541541Srgrimes mp2 = mp->m_next; 9551541Srgrimes /* Loop around copying up the siz2 bytes */ 9561541Srgrimes while (siz2 > 0) { 9571541Srgrimes if (mp2 == NULL) 9581541Srgrimes return (EBADRPC); 9591541Srgrimes xfer = (siz2 > mp2->m_len) ? mp2->m_len : siz2; 9601541Srgrimes if (xfer > 0) { 9611541Srgrimes bcopy(mtod(mp2, caddr_t), p, xfer); 9621541Srgrimes NFSMADV(mp2, xfer); 9631541Srgrimes mp2->m_len -= xfer; 9641541Srgrimes p += xfer; 9651541Srgrimes siz2 -= xfer; 9661541Srgrimes } 9671541Srgrimes if (siz2 > 0) 9681541Srgrimes mp2 = mp2->m_next; 9691541Srgrimes } 9701541Srgrimes mp->m_len = siz; 9711541Srgrimes *mdp = mp2; 9721541Srgrimes *dposp = mtod(mp2, caddr_t); 9731541Srgrimes } 9741541Srgrimes return (0); 9751541Srgrimes} 9761541Srgrimes 9771541Srgrimes/* 9781541Srgrimes * Advance the position in the mbuf chain. 9791541Srgrimes */ 9801549Srgrimesint 9811541Srgrimesnfs_adv(mdp, dposp, offs, left) 9821541Srgrimes struct mbuf **mdp; 9831541Srgrimes caddr_t *dposp; 9841541Srgrimes int offs; 9851541Srgrimes int left; 9861541Srgrimes{ 9871541Srgrimes register struct mbuf *m; 9881541Srgrimes register int s; 9891541Srgrimes 9901541Srgrimes m = *mdp; 9911541Srgrimes s = left; 9921541Srgrimes while (s < offs) { 9931541Srgrimes offs -= s; 9941541Srgrimes m = m->m_next; 9951541Srgrimes if (m == NULL) 9961541Srgrimes return (EBADRPC); 9971541Srgrimes s = m->m_len; 9981541Srgrimes } 9991541Srgrimes *mdp = m; 10001541Srgrimes *dposp = mtod(m, caddr_t)+offs; 10011541Srgrimes return (0); 10021541Srgrimes} 10031541Srgrimes 10041541Srgrimes/* 10051541Srgrimes * Copy a string into mbufs for the hard cases... 10061541Srgrimes */ 10071549Srgrimesint 10081541Srgrimesnfsm_strtmbuf(mb, bpos, cp, siz) 10091541Srgrimes struct mbuf **mb; 10101541Srgrimes char **bpos; 10111541Srgrimes char *cp; 10121541Srgrimes long siz; 10131541Srgrimes{ 10141549Srgrimes register struct mbuf *m1 = 0, *m2; 10151541Srgrimes long left, xfer, len, tlen; 10161541Srgrimes u_long *tl; 10171541Srgrimes int putsize; 10181541Srgrimes 10191541Srgrimes putsize = 1; 10201541Srgrimes m2 = *mb; 10211541Srgrimes left = M_TRAILINGSPACE(m2); 10221541Srgrimes if (left > 0) { 10231541Srgrimes tl = ((u_long *)(*bpos)); 10241541Srgrimes *tl++ = txdr_unsigned(siz); 10251541Srgrimes putsize = 0; 10261541Srgrimes left -= NFSX_UNSIGNED; 10271541Srgrimes m2->m_len += NFSX_UNSIGNED; 10281541Srgrimes if (left > 0) { 10291541Srgrimes bcopy(cp, (caddr_t) tl, left); 10301541Srgrimes siz -= left; 10311541Srgrimes cp += left; 10321541Srgrimes m2->m_len += left; 10331541Srgrimes left = 0; 10341541Srgrimes } 10351541Srgrimes } 10361541Srgrimes /* Loop around adding mbufs */ 10371541Srgrimes while (siz > 0) { 10381541Srgrimes MGET(m1, M_WAIT, MT_DATA); 10391541Srgrimes if (siz > MLEN) 10401541Srgrimes MCLGET(m1, M_WAIT); 10411541Srgrimes m1->m_len = NFSMSIZ(m1); 10421541Srgrimes m2->m_next = m1; 10431541Srgrimes m2 = m1; 10441541Srgrimes tl = mtod(m1, u_long *); 10451541Srgrimes tlen = 0; 10461541Srgrimes if (putsize) { 10471541Srgrimes *tl++ = txdr_unsigned(siz); 10481541Srgrimes m1->m_len -= NFSX_UNSIGNED; 10491541Srgrimes tlen = NFSX_UNSIGNED; 10501541Srgrimes putsize = 0; 10511541Srgrimes } 10521541Srgrimes if (siz < m1->m_len) { 10531541Srgrimes len = nfsm_rndup(siz); 10541541Srgrimes xfer = siz; 10551541Srgrimes if (xfer < len) 10561541Srgrimes *(tl+(xfer>>2)) = 0; 10571541Srgrimes } else { 10581541Srgrimes xfer = len = m1->m_len; 10591541Srgrimes } 10601541Srgrimes bcopy(cp, (caddr_t) tl, xfer); 10611541Srgrimes m1->m_len = len+tlen; 10621541Srgrimes siz -= xfer; 10631541Srgrimes cp += xfer; 10641541Srgrimes } 10651541Srgrimes *mb = m1; 10661541Srgrimes *bpos = mtod(m1, caddr_t)+m1->m_len; 10671541Srgrimes return (0); 10681541Srgrimes} 10691541Srgrimes 10701541Srgrimes/* 10711541Srgrimes * Called once to initialize data structures... 10721541Srgrimes */ 10731549Srgrimesint 10741541Srgrimesnfs_init() 10751541Srgrimes{ 10761541Srgrimes register int i; 10771541Srgrimes 10789336Sdfr /* 10799336Sdfr * Check to see if major data structures haven't bloated. 10809336Sdfr */ 10819336Sdfr if (sizeof (struct nfsnode) > NFS_NODEALLOC) { 10829336Sdfr printf("struct nfsnode bloated (> %dbytes)\n", NFS_NODEALLOC); 10839336Sdfr printf("Try reducing NFS_SMALLFH\n"); 10849336Sdfr } 10859336Sdfr if (sizeof (struct nfsmount) > NFS_MNTALLOC) { 10869336Sdfr printf("struct nfsmount bloated (> %dbytes)\n", NFS_MNTALLOC); 10879336Sdfr printf("Try reducing NFS_MUIDHASHSIZ\n"); 10889336Sdfr } 10899336Sdfr if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) { 10909336Sdfr printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC); 10919336Sdfr printf("Try reducing NFS_UIDHASHSIZ\n"); 10929336Sdfr } 10939336Sdfr if (sizeof (struct nfsuid) > NFS_UIDALLOC) { 10949336Sdfr printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC); 10959336Sdfr printf("Try unionizing the nu_nickname and nu_flag fields\n"); 10969336Sdfr } 10971541Srgrimes nfsrtt.pos = 0; 10981541Srgrimes rpc_vers = txdr_unsigned(RPC_VER2); 10991541Srgrimes rpc_call = txdr_unsigned(RPC_CALL); 11001541Srgrimes rpc_reply = txdr_unsigned(RPC_REPLY); 11011541Srgrimes rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 11021541Srgrimes rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 11031541Srgrimes rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 11041541Srgrimes rpc_autherr = txdr_unsigned(RPC_AUTHERR); 11051541Srgrimes rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 11069336Sdfr rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 11071541Srgrimes nfs_prog = txdr_unsigned(NFS_PROG); 11089336Sdfr nqnfs_prog = txdr_unsigned(NQNFS_PROG); 11091541Srgrimes nfs_true = txdr_unsigned(TRUE); 11101541Srgrimes nfs_false = txdr_unsigned(FALSE); 11113664Sphk nfs_xdrneg1 = txdr_unsigned(-1); 11129336Sdfr nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 11139336Sdfr if (nfs_ticks < 1) 11149336Sdfr nfs_ticks = 1; 11151541Srgrimes /* Ensure async daemons disabled */ 11161541Srgrimes for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 11171541Srgrimes nfs_iodwant[i] = (struct proc *)0; 11181541Srgrimes TAILQ_INIT(&nfs_bufq); 11191541Srgrimes nfs_nhinit(); /* Init the nfsnode table */ 11201541Srgrimes nfsrv_init(0); /* Init server data structures */ 11211541Srgrimes nfsrv_initcache(); /* Init the server request cache */ 11221541Srgrimes 11231541Srgrimes /* 11241541Srgrimes * Initialize the nqnfs server stuff. 11251541Srgrimes */ 11261541Srgrimes if (nqnfsstarttime == 0) { 11271541Srgrimes nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 11281541Srgrimes + nqsrv_clockskew + nqsrv_writeslack; 11291541Srgrimes NQLOADNOVRAM(nqnfsstarttime); 11303664Sphk CIRCLEQ_INIT(&nqtimerhead); 11313664Sphk nqfhhashtbl = hashinit(NQLCHSZ, M_NQLEASE, &nqfhhash); 11321541Srgrimes } 11331541Srgrimes 11341541Srgrimes /* 11351541Srgrimes * Initialize reply list and start timer 11361541Srgrimes */ 11373664Sphk TAILQ_INIT(&nfs_reqq); 11383305Sphk nfs_timer(0); 11391549Srgrimes 11409336Sdfr#ifdef __FreeBSD__ 11412997Swollman /* 11422997Swollman * Set up lease_check and lease_updatetime so that other parts 11432997Swollman * of the system can call us, if we are loadable. 11442997Swollman */ 11452997Swollman lease_check = nfs_lease_check; 11462997Swollman lease_updatetime = nfs_lease_updatetime; 11472997Swollman vfsconf[MOUNT_NFS]->vfc_refcount++; /* make us non-unloadable */ 11482997Swollman#ifdef VFS_LKM 11492997Swollman sysent[SYS_nfssvc].sy_narg = 2; 11502997Swollman sysent[SYS_nfssvc].sy_call = nfssvc; 11512997Swollman sysent[SYS_getfh].sy_narg = 2; 11522997Swollman sysent[SYS_getfh].sy_call = getfh; 11532997Swollman#endif 11549336Sdfr#endif 11552997Swollman 11561549Srgrimes return (0); 11571541Srgrimes} 11581541Srgrimes 11591541Srgrimes/* 11601541Srgrimes * Attribute cache routines. 11611541Srgrimes * nfs_loadattrcache() - loads or updates the cache contents from attributes 11621541Srgrimes * that are on the mbuf list 11631541Srgrimes * nfs_getattrcache() - returns valid attributes if found in cache, returns 11641541Srgrimes * error otherwise 11651541Srgrimes */ 11661541Srgrimes 11671541Srgrimes/* 11681541Srgrimes * Load the attribute cache (that lives in the nfsnode entry) with 11691541Srgrimes * the values on the mbuf list and 11701541Srgrimes * Iff vap not NULL 11711541Srgrimes * copy the attributes to *vaper 11721541Srgrimes */ 11731549Srgrimesint 11741541Srgrimesnfs_loadattrcache(vpp, mdp, dposp, vaper) 11751541Srgrimes struct vnode **vpp; 11761541Srgrimes struct mbuf **mdp; 11771541Srgrimes caddr_t *dposp; 11781541Srgrimes struct vattr *vaper; 11791541Srgrimes{ 11801541Srgrimes register struct vnode *vp = *vpp; 11811541Srgrimes register struct vattr *vap; 11829336Sdfr register struct nfs_fattr *fp; 11833664Sphk register struct nfsnode *np; 11843664Sphk register struct nfsnodehashhead *nhpp; 11851541Srgrimes register long t1; 11869336Sdfr caddr_t cp2; 11879336Sdfr int error = 0, rdev; 11881541Srgrimes struct mbuf *md; 11891541Srgrimes enum vtype vtyp; 11901541Srgrimes u_short vmode; 11911541Srgrimes struct timespec mtime; 11921541Srgrimes struct vnode *nvp; 11939336Sdfr int v3 = NFS_ISV3(vp); 11941541Srgrimes 11951541Srgrimes md = *mdp; 11969336Sdfr t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 11979336Sdfr if (error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2)) 11981541Srgrimes return (error); 11999336Sdfr fp = (struct nfs_fattr *)cp2; 12009336Sdfr if (v3) { 12019336Sdfr vtyp = nfsv3tov_type(fp->fa_type); 12029336Sdfr vmode = fxdr_unsigned(u_short, fp->fa_mode); 12039336Sdfr rdev = makedev(fxdr_unsigned(u_char, fp->fa3_rdev.specdata1), 12049336Sdfr fxdr_unsigned(u_char, fp->fa3_rdev.specdata2)); 12059336Sdfr fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 12061541Srgrimes } else { 12079336Sdfr vtyp = nfsv2tov_type(fp->fa_type); 12089336Sdfr vmode = fxdr_unsigned(u_short, fp->fa_mode); 12099336Sdfr /* 12109336Sdfr * XXX 12119336Sdfr * 12129336Sdfr * The duplicate information returned in fa_type and fa_mode 12139336Sdfr * is an ambiguity in the NFS version 2 protocol. 12149336Sdfr * 12159336Sdfr * VREG should be taken literally as a regular file. If a 12169336Sdfr * server intents to return some type information differently 12179336Sdfr * in the upper bits of the mode field (e.g. for sockets, or 12189336Sdfr * FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we 12199336Sdfr * leave the examination of the mode bits even in the VREG 12209336Sdfr * case to avoid breakage for bogus servers, but we make sure 12219336Sdfr * that there are actually type bits set in the upper part of 12229336Sdfr * fa_mode (and failing that, trust the va_type field). 12239336Sdfr * 12249336Sdfr * NFSv3 cleared the issue, and requires fa_mode to not 12259336Sdfr * contain any type information (while also introduing sockets 12269336Sdfr * and FIFOs for fa_type). 12279336Sdfr */ 12289336Sdfr if (vtyp == VNON || (vtyp == VREG && (vmode & S_IFMT) != 0)) 12299336Sdfr vtyp = IFTOVT(vmode); 12309336Sdfr rdev = fxdr_unsigned(long, fp->fa2_rdev); 12319336Sdfr fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 12329336Sdfr 12339336Sdfr /* 12349336Sdfr * Really ugly NFSv2 kludge. 12359336Sdfr */ 12369336Sdfr if (vtyp == VCHR && rdev == 0xffffffff) 12379336Sdfr vtyp = VFIFO; 12381541Srgrimes } 12399336Sdfr 12401541Srgrimes /* 12411541Srgrimes * If v_type == VNON it is a new node, so fill in the v_type, 12428876Srgrimes * n_mtime fields. Check to see if it represents a special 12431541Srgrimes * device, and if so, check for a possible alias. Once the 12441541Srgrimes * correct vnode has been obtained, fill in the rest of the 12451541Srgrimes * information. 12461541Srgrimes */ 12471541Srgrimes np = VTONFS(vp); 124810219Sdfr if (vp->v_type != vtyp) { 12499336Sdfr /* 12509336Sdfr * If we had a lock and it turns out that the vnode 12519336Sdfr * is an object which we don't want to lock (e.g. VDIR) 12529336Sdfr * to avoid nasty hanging problems on a server crash, 12539336Sdfr * then release it here. 12549336Sdfr */ 12559336Sdfr if (vtyp != VREG && VOP_ISLOCKED(vp)) 12569336Sdfr VOP_UNLOCK(vp); 12579336Sdfr vp->v_type = vtyp; 12581541Srgrimes if (vp->v_type == VFIFO) { 12591541Srgrimes vp->v_op = fifo_nfsv2nodeop_p; 12601541Srgrimes } 12611541Srgrimes if (vp->v_type == VCHR || vp->v_type == VBLK) { 12621541Srgrimes vp->v_op = spec_nfsv2nodeop_p; 12633305Sphk nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 12643305Sphk if (nvp) { 12651541Srgrimes /* 12661541Srgrimes * Discard unneeded vnode, but save its nfsnode. 12671541Srgrimes */ 12683664Sphk LIST_REMOVE(np, n_hash); 12691541Srgrimes nvp->v_data = vp->v_data; 12701541Srgrimes vp->v_data = NULL; 12711541Srgrimes vp->v_op = spec_vnodeop_p; 12721541Srgrimes vrele(vp); 12731541Srgrimes vgone(vp); 12741541Srgrimes /* 12751541Srgrimes * Reinitialize aliased node. 12761541Srgrimes */ 12771541Srgrimes np->n_vnode = nvp; 12789336Sdfr nhpp = NFSNOHASH(nfs_hash(np->n_fhp, np->n_fhsize)); 12793664Sphk LIST_INSERT_HEAD(nhpp, np, n_hash); 12801541Srgrimes *vpp = vp = nvp; 12811541Srgrimes } 12821541Srgrimes } 12831541Srgrimes np->n_mtime = mtime.ts_sec; 12841541Srgrimes } 12851541Srgrimes vap = &np->n_vattr; 12861541Srgrimes vap->va_type = vtyp; 12871541Srgrimes vap->va_mode = (vmode & 07777); 12881541Srgrimes vap->va_rdev = (dev_t)rdev; 12891541Srgrimes vap->va_mtime = mtime; 12901541Srgrimes vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 12919336Sdfr if (v3) { 12929336Sdfr vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 12939336Sdfr vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 12949336Sdfr vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 12959336Sdfr fxdr_hyper(&fp->fa3_size, &vap->va_size); 12969336Sdfr vap->va_blocksize = NFS_FABLKSIZE; 12979336Sdfr fxdr_hyper(&fp->fa3_used, &vap->va_bytes); 12989336Sdfr vap->va_fileid = fxdr_unsigned(int, fp->fa3_fileid.nfsuquad[1]); 12999336Sdfr fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 13009336Sdfr fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 13019336Sdfr vap->va_flags = 0; 13029336Sdfr vap->va_filerev = 0; 13031541Srgrimes } else { 13049336Sdfr vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 13059336Sdfr vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 13069336Sdfr vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 13079336Sdfr vap->va_size = fxdr_unsigned(u_long, fp->fa2_size); 13089336Sdfr vap->va_blocksize = fxdr_unsigned(long, fp->fa2_blocksize); 13099336Sdfr vap->va_bytes = fxdr_unsigned(long, fp->fa2_blocks) * NFS_FABLKSIZE; 13109336Sdfr vap->va_fileid = fxdr_unsigned(long, fp->fa2_fileid); 13119336Sdfr fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 13121541Srgrimes vap->va_flags = 0; 13139336Sdfr vap->va_ctime.ts_sec = fxdr_unsigned(long, fp->fa2_ctime.nfsv2_sec); 13149336Sdfr vap->va_ctime.ts_nsec = 0; 13159336Sdfr vap->va_gen = fxdr_unsigned(u_long, fp->fa2_ctime.nfsv2_usec); 13161541Srgrimes vap->va_filerev = 0; 13171541Srgrimes } 13181541Srgrimes if (vap->va_size != np->n_size) { 13191541Srgrimes if (vap->va_type == VREG) { 13201541Srgrimes if (np->n_flag & NMODIFIED) { 13211541Srgrimes if (vap->va_size < np->n_size) 13221541Srgrimes vap->va_size = np->n_size; 13231541Srgrimes else 13241541Srgrimes np->n_size = vap->va_size; 13251541Srgrimes } else 13261541Srgrimes np->n_size = vap->va_size; 13271541Srgrimes vnode_pager_setsize(vp, (u_long)np->n_size); 13281541Srgrimes } else 13291541Srgrimes np->n_size = vap->va_size; 13301541Srgrimes } 13311541Srgrimes np->n_attrstamp = time.tv_sec; 13321541Srgrimes if (vaper != NULL) { 13331541Srgrimes bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 13341541Srgrimes if (np->n_flag & NCHG) { 13359336Sdfr if (np->n_flag & NACC) 13369336Sdfr vaper->va_atime = np->n_atim; 13379336Sdfr if (np->n_flag & NUPD) 13389336Sdfr vaper->va_mtime = np->n_mtim; 13391541Srgrimes } 13401541Srgrimes } 13411541Srgrimes return (0); 13421541Srgrimes} 13431541Srgrimes 13441541Srgrimes/* 13451541Srgrimes * Check the time stamp 13461541Srgrimes * If the cache is valid, copy contents to *vap and return 0 13471541Srgrimes * otherwise return an error 13481541Srgrimes */ 13491549Srgrimesint 13501541Srgrimesnfs_getattrcache(vp, vaper) 13511541Srgrimes register struct vnode *vp; 13521541Srgrimes struct vattr *vaper; 13531541Srgrimes{ 13541541Srgrimes register struct nfsnode *np = VTONFS(vp); 13551541Srgrimes register struct vattr *vap; 13561541Srgrimes 13579336Sdfr if ((time.tv_sec - np->n_attrstamp) >= NFS_ATTRTIMEO(np)) { 13581541Srgrimes nfsstats.attrcache_misses++; 13591541Srgrimes return (ENOENT); 13601541Srgrimes } 13611541Srgrimes nfsstats.attrcache_hits++; 13621541Srgrimes vap = &np->n_vattr; 13631541Srgrimes if (vap->va_size != np->n_size) { 13641541Srgrimes if (vap->va_type == VREG) { 13651541Srgrimes if (np->n_flag & NMODIFIED) { 13661541Srgrimes if (vap->va_size < np->n_size) 13671541Srgrimes vap->va_size = np->n_size; 13681541Srgrimes else 13691541Srgrimes np->n_size = vap->va_size; 13701541Srgrimes } else 13711541Srgrimes np->n_size = vap->va_size; 13721541Srgrimes vnode_pager_setsize(vp, (u_long)np->n_size); 13731541Srgrimes } else 13741541Srgrimes np->n_size = vap->va_size; 13751541Srgrimes } 13761541Srgrimes bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr)); 13771541Srgrimes if (np->n_flag & NCHG) { 13789336Sdfr if (np->n_flag & NACC) 13799336Sdfr vaper->va_atime = np->n_atim; 13809336Sdfr if (np->n_flag & NUPD) 13819336Sdfr vaper->va_mtime = np->n_mtim; 13821541Srgrimes } 13831541Srgrimes return (0); 13841541Srgrimes} 13851541Srgrimes 13861541Srgrimes/* 13871541Srgrimes * Set up nameidata for a lookup() call and do it 13881541Srgrimes */ 13891549Srgrimesint 13909336Sdfrnfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag) 13911541Srgrimes register struct nameidata *ndp; 13921541Srgrimes fhandle_t *fhp; 13931541Srgrimes int len; 13941541Srgrimes struct nfssvc_sock *slp; 13951541Srgrimes struct mbuf *nam; 13961541Srgrimes struct mbuf **mdp; 13971541Srgrimes caddr_t *dposp; 13989336Sdfr struct vnode **retdirp; 13991541Srgrimes struct proc *p; 14009336Sdfr int kerbflag; 14011541Srgrimes{ 14021541Srgrimes register int i, rem; 14031541Srgrimes register struct mbuf *md; 14041541Srgrimes register char *fromcp, *tocp; 14051541Srgrimes struct vnode *dp; 14061541Srgrimes int error, rdonly; 14071541Srgrimes struct componentname *cnp = &ndp->ni_cnd; 14081541Srgrimes 14099336Sdfr *retdirp = (struct vnode *)0; 14101541Srgrimes MALLOC(cnp->cn_pnbuf, char *, len + 1, M_NAMEI, M_WAITOK); 14111541Srgrimes /* 14121541Srgrimes * Copy the name from the mbuf list to ndp->ni_pnbuf 14131541Srgrimes * and set the various ndp fields appropriately. 14141541Srgrimes */ 14151541Srgrimes fromcp = *dposp; 14161541Srgrimes tocp = cnp->cn_pnbuf; 14171541Srgrimes md = *mdp; 14181541Srgrimes rem = mtod(md, caddr_t) + md->m_len - fromcp; 14191541Srgrimes cnp->cn_hash = 0; 14201541Srgrimes for (i = 0; i < len; i++) { 14211541Srgrimes while (rem == 0) { 14221541Srgrimes md = md->m_next; 14231541Srgrimes if (md == NULL) { 14241541Srgrimes error = EBADRPC; 14251541Srgrimes goto out; 14261541Srgrimes } 14271541Srgrimes fromcp = mtod(md, caddr_t); 14281541Srgrimes rem = md->m_len; 14291541Srgrimes } 14301541Srgrimes if (*fromcp == '\0' || *fromcp == '/') { 14319336Sdfr error = EACCES; 14321541Srgrimes goto out; 14331541Srgrimes } 14341541Srgrimes cnp->cn_hash += (unsigned char)*fromcp; 14351541Srgrimes *tocp++ = *fromcp++; 14361541Srgrimes rem--; 14371541Srgrimes } 14381541Srgrimes *tocp = '\0'; 14391541Srgrimes *mdp = md; 14401541Srgrimes *dposp = fromcp; 14411541Srgrimes len = nfsm_rndup(len)-len; 14421541Srgrimes if (len > 0) { 14431541Srgrimes if (rem >= len) 14441541Srgrimes *dposp += len; 14459336Sdfr else if (error = nfs_adv(mdp, dposp, len, rem)) 14469336Sdfr goto out; 14471541Srgrimes } 14481541Srgrimes ndp->ni_pathlen = tocp - cnp->cn_pnbuf; 14491541Srgrimes cnp->cn_nameptr = cnp->cn_pnbuf; 14501541Srgrimes /* 14511541Srgrimes * Extract and set starting directory. 14521541Srgrimes */ 14539336Sdfr if (error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 14549336Sdfr nam, &rdonly, kerbflag)) 14551541Srgrimes goto out; 14561541Srgrimes if (dp->v_type != VDIR) { 14576417Sdg nfsrv_vrele(dp); 14581541Srgrimes error = ENOTDIR; 14591541Srgrimes goto out; 14601541Srgrimes } 14619336Sdfr VREF(dp); 14629336Sdfr *retdirp = dp; 14631541Srgrimes ndp->ni_startdir = dp; 14641541Srgrimes if (rdonly) 14651541Srgrimes cnp->cn_flags |= (NOCROSSMOUNT | RDONLY); 14661541Srgrimes else 14671541Srgrimes cnp->cn_flags |= NOCROSSMOUNT; 14681541Srgrimes /* 14691541Srgrimes * And call lookup() to do the real work 14701541Srgrimes */ 14711541Srgrimes cnp->cn_proc = p; 14729336Sdfr if (error = lookup(ndp)) 14731541Srgrimes goto out; 14741541Srgrimes /* 14751541Srgrimes * Check for encountering a symbolic link 14761541Srgrimes */ 14771541Srgrimes if (cnp->cn_flags & ISSYMLINK) { 14781541Srgrimes if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 14791541Srgrimes vput(ndp->ni_dvp); 14801541Srgrimes else 14811541Srgrimes vrele(ndp->ni_dvp); 14821541Srgrimes vput(ndp->ni_vp); 14831541Srgrimes ndp->ni_vp = NULL; 14841541Srgrimes error = EINVAL; 14851541Srgrimes goto out; 14861541Srgrimes } 14878832Sdg 14888832Sdg nfsrv_vmio(ndp->ni_vp); 14898832Sdg 14901541Srgrimes /* 14911541Srgrimes * Check for saved name request 14921541Srgrimes */ 14931541Srgrimes if (cnp->cn_flags & (SAVENAME | SAVESTART)) { 14941541Srgrimes cnp->cn_flags |= HASBUF; 14951541Srgrimes return (0); 14961541Srgrimes } 14971541Srgrimesout: 14981541Srgrimes FREE(cnp->cn_pnbuf, M_NAMEI); 14991541Srgrimes return (error); 15001541Srgrimes} 15011541Srgrimes 15021541Srgrimes/* 15031541Srgrimes * A fiddled version of m_adj() that ensures null fill to a long 15041541Srgrimes * boundary and only trims off the back end 15051541Srgrimes */ 15061541Srgrimesvoid 15071541Srgrimesnfsm_adj(mp, len, nul) 15081541Srgrimes struct mbuf *mp; 15091541Srgrimes register int len; 15101541Srgrimes int nul; 15111541Srgrimes{ 15121541Srgrimes register struct mbuf *m; 15131541Srgrimes register int count, i; 15141541Srgrimes register char *cp; 15151541Srgrimes 15161541Srgrimes /* 15171541Srgrimes * Trim from tail. Scan the mbuf chain, 15181541Srgrimes * calculating its length and finding the last mbuf. 15191541Srgrimes * If the adjustment only affects this mbuf, then just 15201541Srgrimes * adjust and return. Otherwise, rescan and truncate 15211541Srgrimes * after the remaining size. 15221541Srgrimes */ 15231541Srgrimes count = 0; 15241541Srgrimes m = mp; 15251541Srgrimes for (;;) { 15261541Srgrimes count += m->m_len; 15271541Srgrimes if (m->m_next == (struct mbuf *)0) 15281541Srgrimes break; 15291541Srgrimes m = m->m_next; 15301541Srgrimes } 15311541Srgrimes if (m->m_len > len) { 15321541Srgrimes m->m_len -= len; 15331541Srgrimes if (nul > 0) { 15341541Srgrimes cp = mtod(m, caddr_t)+m->m_len-nul; 15351541Srgrimes for (i = 0; i < nul; i++) 15361541Srgrimes *cp++ = '\0'; 15371541Srgrimes } 15381541Srgrimes return; 15391541Srgrimes } 15401541Srgrimes count -= len; 15411541Srgrimes if (count < 0) 15421541Srgrimes count = 0; 15431541Srgrimes /* 15441541Srgrimes * Correct length for chain is "count". 15451541Srgrimes * Find the mbuf with last data, adjust its length, 15461541Srgrimes * and toss data from remaining mbufs on chain. 15471541Srgrimes */ 15481541Srgrimes for (m = mp; m; m = m->m_next) { 15491541Srgrimes if (m->m_len >= count) { 15501541Srgrimes m->m_len = count; 15511541Srgrimes if (nul > 0) { 15521541Srgrimes cp = mtod(m, caddr_t)+m->m_len-nul; 15531541Srgrimes for (i = 0; i < nul; i++) 15541541Srgrimes *cp++ = '\0'; 15551541Srgrimes } 15561541Srgrimes break; 15571541Srgrimes } 15581541Srgrimes count -= m->m_len; 15591541Srgrimes } 15603305Sphk for (m = m->m_next;m;m = m->m_next) 15611541Srgrimes m->m_len = 0; 15621541Srgrimes} 15631541Srgrimes 15641541Srgrimes/* 15659336Sdfr * Make these functions instead of macros, so that the kernel text size 15669336Sdfr * doesn't get too big... 15679336Sdfr */ 15689336Sdfrvoid 15699336Sdfrnfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 15709336Sdfr struct nfsrv_descript *nfsd; 15719336Sdfr int before_ret; 15729336Sdfr register struct vattr *before_vap; 15739336Sdfr int after_ret; 15749336Sdfr struct vattr *after_vap; 15759336Sdfr struct mbuf **mbp; 15769336Sdfr char **bposp; 15779336Sdfr{ 15789336Sdfr register struct mbuf *mb = *mbp, *mb2; 15799336Sdfr register char *bpos = *bposp; 15809336Sdfr register u_long *tl; 15819336Sdfr 15829336Sdfr if (before_ret) { 15839336Sdfr nfsm_build(tl, u_long *, NFSX_UNSIGNED); 15849336Sdfr *tl = nfs_false; 15859336Sdfr } else { 15869336Sdfr nfsm_build(tl, u_long *, 7 * NFSX_UNSIGNED); 15879336Sdfr *tl++ = nfs_true; 15889336Sdfr txdr_hyper(&(before_vap->va_size), tl); 15899336Sdfr tl += 2; 15909336Sdfr txdr_nfsv3time(&(before_vap->va_mtime), tl); 15919336Sdfr tl += 2; 15929336Sdfr txdr_nfsv3time(&(before_vap->va_ctime), tl); 15939336Sdfr } 15949336Sdfr *bposp = bpos; 15959336Sdfr *mbp = mb; 15969336Sdfr nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 15979336Sdfr} 15989336Sdfr 15999336Sdfrvoid 16009336Sdfrnfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 16019336Sdfr struct nfsrv_descript *nfsd; 16029336Sdfr int after_ret; 16039336Sdfr struct vattr *after_vap; 16049336Sdfr struct mbuf **mbp; 16059336Sdfr char **bposp; 16069336Sdfr{ 16079336Sdfr register struct mbuf *mb = *mbp, *mb2; 16089336Sdfr register char *bpos = *bposp; 16099336Sdfr register u_long *tl; 16109336Sdfr register struct nfs_fattr *fp; 16119336Sdfr 16129336Sdfr if (after_ret) { 16139336Sdfr nfsm_build(tl, u_long *, NFSX_UNSIGNED); 16149336Sdfr *tl = nfs_false; 16159336Sdfr } else { 16169336Sdfr nfsm_build(tl, u_long *, NFSX_UNSIGNED + NFSX_V3FATTR); 16179336Sdfr *tl++ = nfs_true; 16189336Sdfr fp = (struct nfs_fattr *)tl; 16199336Sdfr nfsm_srvfattr(nfsd, after_vap, fp); 16209336Sdfr } 16219336Sdfr *mbp = mb; 16229336Sdfr *bposp = bpos; 16239336Sdfr} 16249336Sdfr 16259336Sdfrvoid 16269336Sdfrnfsm_srvfattr(nfsd, vap, fp) 16279336Sdfr register struct nfsrv_descript *nfsd; 16289336Sdfr register struct vattr *vap; 16299336Sdfr register struct nfs_fattr *fp; 16309336Sdfr{ 16319336Sdfr 16329336Sdfr fp->fa_nlink = txdr_unsigned(vap->va_nlink); 16339336Sdfr fp->fa_uid = txdr_unsigned(vap->va_uid); 16349336Sdfr fp->fa_gid = txdr_unsigned(vap->va_gid); 16359336Sdfr if (nfsd->nd_flag & ND_NFSV3) { 16369336Sdfr fp->fa_type = vtonfsv3_type(vap->va_type); 16379336Sdfr fp->fa_mode = vtonfsv3_mode(vap->va_mode); 16389336Sdfr txdr_hyper(&vap->va_size, &fp->fa3_size); 16399336Sdfr txdr_hyper(&vap->va_bytes, &fp->fa3_used); 16409336Sdfr fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 16419336Sdfr fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 16429336Sdfr fp->fa3_fsid.nfsuquad[0] = 0; 16439336Sdfr fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 16449336Sdfr fp->fa3_fileid.nfsuquad[0] = 0; 16459336Sdfr fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid); 16469336Sdfr txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 16479336Sdfr txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 16489336Sdfr txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 16499336Sdfr } else { 16509336Sdfr fp->fa_type = vtonfsv2_type(vap->va_type); 16519336Sdfr fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 16529336Sdfr fp->fa2_size = txdr_unsigned(vap->va_size); 16539336Sdfr fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 16549336Sdfr if (vap->va_type == VFIFO) 16559336Sdfr fp->fa2_rdev = 0xffffffff; 16569336Sdfr else 16579336Sdfr fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 16589336Sdfr fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 16599336Sdfr fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 16609336Sdfr fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 16619336Sdfr txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 16629336Sdfr txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 16639336Sdfr txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 16649336Sdfr } 16659336Sdfr} 16669336Sdfr 16679336Sdfr/* 16681541Srgrimes * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 16691541Srgrimes * - look up fsid in mount list (if not found ret error) 16701541Srgrimes * - get vp and export rights by calling VFS_FHTOVP() 16711541Srgrimes * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 16721541Srgrimes * - if not lockflag unlock it with VOP_UNLOCK() 16731541Srgrimes */ 16741549Srgrimesint 16759336Sdfrnfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag) 16761541Srgrimes fhandle_t *fhp; 16771541Srgrimes int lockflag; 16781541Srgrimes struct vnode **vpp; 16791541Srgrimes struct ucred *cred; 16801541Srgrimes struct nfssvc_sock *slp; 16811541Srgrimes struct mbuf *nam; 16821541Srgrimes int *rdonlyp; 16839336Sdfr int kerbflag; 16841541Srgrimes{ 16851541Srgrimes register struct mount *mp; 16861541Srgrimes register int i; 16871541Srgrimes struct ucred *credanon; 16881541Srgrimes int error, exflags; 16891541Srgrimes 16901541Srgrimes *vpp = (struct vnode *)0; 16913305Sphk mp = getvfs(&fhp->fh_fsid); 16923305Sphk if (!mp) 16931541Srgrimes return (ESTALE); 16943305Sphk error = VFS_FHTOVP(mp, &fhp->fh_fid, nam, vpp, &exflags, &credanon); 16953305Sphk if (error) 16961541Srgrimes return (error); 16971541Srgrimes /* 16981541Srgrimes * Check/setup credentials. 16991541Srgrimes */ 17001541Srgrimes if (exflags & MNT_EXKERB) { 17019336Sdfr if (!kerbflag) { 17021541Srgrimes vput(*vpp); 17039336Sdfr return (NFSERR_AUTHERR | AUTH_TOOWEAK); 17041541Srgrimes } 17059336Sdfr } else if (kerbflag) { 17069336Sdfr vput(*vpp); 17079336Sdfr return (NFSERR_AUTHERR | AUTH_TOOWEAK); 17081541Srgrimes } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) { 17091541Srgrimes cred->cr_uid = credanon->cr_uid; 17101541Srgrimes for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 17111541Srgrimes cred->cr_groups[i] = credanon->cr_groups[i]; 17123664Sphk cred->cr_ngroups = i; 17131541Srgrimes } 17141541Srgrimes if (exflags & MNT_EXRDONLY) 17151541Srgrimes *rdonlyp = 1; 17161541Srgrimes else 17171541Srgrimes *rdonlyp = 0; 17187969Sdyson 17197969Sdyson nfsrv_vmio(*vpp); 17207969Sdyson 17211541Srgrimes if (!lockflag) 17221541Srgrimes VOP_UNLOCK(*vpp); 17231541Srgrimes return (0); 17241541Srgrimes} 17251541Srgrimes 17261541Srgrimes/* 17271541Srgrimes * This function compares two net addresses by family and returns TRUE 17281541Srgrimes * if they are the same host. 17291541Srgrimes * If there is any doubt, return FALSE. 17301541Srgrimes * The AF_INET family is handled as a special case so that address mbufs 17311541Srgrimes * don't need to be saved to store "struct in_addr", which is only 4 bytes. 17321541Srgrimes */ 17331549Srgrimesint 17341541Srgrimesnetaddr_match(family, haddr, nam) 17351541Srgrimes int family; 17361541Srgrimes union nethostaddr *haddr; 17371541Srgrimes struct mbuf *nam; 17381541Srgrimes{ 17391541Srgrimes register struct sockaddr_in *inetaddr; 17401541Srgrimes 17411541Srgrimes switch (family) { 17421541Srgrimes case AF_INET: 17431541Srgrimes inetaddr = mtod(nam, struct sockaddr_in *); 17441541Srgrimes if (inetaddr->sin_family == AF_INET && 17451541Srgrimes inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 17461541Srgrimes return (1); 17471541Srgrimes break; 17481541Srgrimes#ifdef ISO 17491541Srgrimes case AF_ISO: 17501541Srgrimes { 17511541Srgrimes register struct sockaddr_iso *isoaddr1, *isoaddr2; 17521541Srgrimes 17531541Srgrimes isoaddr1 = mtod(nam, struct sockaddr_iso *); 17541541Srgrimes isoaddr2 = mtod(haddr->had_nam, struct sockaddr_iso *); 17551541Srgrimes if (isoaddr1->siso_family == AF_ISO && 17561541Srgrimes isoaddr1->siso_nlen > 0 && 17571541Srgrimes isoaddr1->siso_nlen == isoaddr2->siso_nlen && 17581541Srgrimes SAME_ISOADDR(isoaddr1, isoaddr2)) 17591541Srgrimes return (1); 17601541Srgrimes break; 17611541Srgrimes } 17621541Srgrimes#endif /* ISO */ 17631541Srgrimes default: 17641541Srgrimes break; 17651541Srgrimes }; 17661541Srgrimes return (0); 17671541Srgrimes} 17685455Sdg 17699336Sdfrstatic nfsuint64 nfs_nullcookie = { 0, 0 }; 17709336Sdfr/* 17719336Sdfr * This function finds the directory cookie that corresponds to the 17729336Sdfr * logical byte offset given. 17739336Sdfr */ 17749336Sdfrnfsuint64 * 17759336Sdfrnfs_getcookie(np, off, add) 17769336Sdfr register struct nfsnode *np; 17779336Sdfr off_t off; 17789336Sdfr int add; 17799336Sdfr{ 17809336Sdfr register struct nfsdmap *dp, *dp2; 17819336Sdfr register int pos; 17829336Sdfr 17839336Sdfr pos = off / NFS_DIRBLKSIZ; 17849336Sdfr if (pos == 0) { 17859336Sdfr#ifdef DIAGNOSTIC 17869336Sdfr if (add) 17879336Sdfr panic("nfs getcookie add at 0"); 17889336Sdfr#endif 17899336Sdfr return (&nfs_nullcookie); 17909336Sdfr } 17919336Sdfr pos--; 17929336Sdfr dp = np->n_cookies.lh_first; 17939336Sdfr if (!dp) { 17949336Sdfr if (add) { 17959336Sdfr MALLOC(dp, struct nfsdmap *, sizeof (struct nfsdmap), 17969336Sdfr M_NFSDIROFF, M_WAITOK); 17979336Sdfr dp->ndm_eocookie = 0; 17989336Sdfr LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list); 17999336Sdfr } else 18009336Sdfr return ((nfsuint64 *)0); 18019336Sdfr } 18029336Sdfr while (pos >= NFSNUMCOOKIES) { 18039336Sdfr pos -= NFSNUMCOOKIES; 18049336Sdfr if (dp->ndm_list.le_next) { 18059336Sdfr if (!add && dp->ndm_eocookie < NFSNUMCOOKIES && 18069336Sdfr pos >= dp->ndm_eocookie) 18079336Sdfr return ((nfsuint64 *)0); 18089336Sdfr dp = dp->ndm_list.le_next; 18099336Sdfr } else if (add) { 18109336Sdfr MALLOC(dp2, struct nfsdmap *, sizeof (struct nfsdmap), 18119336Sdfr M_NFSDIROFF, M_WAITOK); 18129336Sdfr dp2->ndm_eocookie = 0; 18139336Sdfr LIST_INSERT_AFTER(dp, dp2, ndm_list); 18149336Sdfr dp = dp2; 18159336Sdfr } else 18169336Sdfr return ((nfsuint64 *)0); 18179336Sdfr } 18189336Sdfr if (pos >= dp->ndm_eocookie) { 18199336Sdfr if (add) 18209336Sdfr dp->ndm_eocookie = pos + 1; 18219336Sdfr else 18229336Sdfr return ((nfsuint64 *)0); 18239336Sdfr } 18249336Sdfr return (&dp->ndm_cookies[pos]); 18259336Sdfr} 18269336Sdfr 18279336Sdfr/* 18289336Sdfr * Invalidate cached directory information, except for the actual directory 18299336Sdfr * blocks (which are invalidated separately). 18309336Sdfr * Done mainly to avoid the use of stale offset cookies. 18319336Sdfr */ 18329336Sdfrvoid 18339336Sdfrnfs_invaldir(vp) 18349336Sdfr register struct vnode *vp; 18359336Sdfr{ 18369336Sdfr register struct nfsnode *np = VTONFS(vp); 18379336Sdfr 18389336Sdfr#ifdef DIAGNOSTIC 18399336Sdfr if (vp->v_type != VDIR) 18409336Sdfr panic("nfs: invaldir not dir"); 18419336Sdfr#endif 18429336Sdfr np->n_direofoffset = 0; 18439336Sdfr np->n_cookieverf.nfsuquad[0] = 0; 18449336Sdfr np->n_cookieverf.nfsuquad[1] = 0; 18459336Sdfr if (np->n_cookies.lh_first) 18469336Sdfr np->n_cookies.lh_first->ndm_eocookie = 0; 18479336Sdfr} 18489336Sdfr 18499336Sdfr/* 18509336Sdfr * The write verifier has changed (probably due to a server reboot), so all 18519336Sdfr * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 18529336Sdfr * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 18539336Sdfr * flag. Once done the new write verifier can be set for the mount point. 18549336Sdfr */ 18559336Sdfrvoid 18569336Sdfrnfs_clearcommit(mp) 18579336Sdfr struct mount *mp; 18589336Sdfr{ 18599336Sdfr register struct vnode *vp, *nvp; 18609336Sdfr register struct buf *bp, *nbp; 18619336Sdfr int s; 18629336Sdfr 18639336Sdfr s = splbio(); 18649336Sdfrloop: 18659336Sdfr for (vp = mp->mnt_vnodelist.lh_first; vp; vp = nvp) { 18669336Sdfr if (vp->v_mount != mp) /* Paranoia */ 18679336Sdfr goto loop; 18689336Sdfr nvp = vp->v_mntvnodes.le_next; 18699336Sdfr for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 18709336Sdfr nbp = bp->b_vnbufs.le_next; 18719336Sdfr if ((bp->b_flags & (B_BUSY | B_DELWRI | B_NEEDCOMMIT)) 18729336Sdfr == (B_DELWRI | B_NEEDCOMMIT)) 18739336Sdfr bp->b_flags &= ~B_NEEDCOMMIT; 18749336Sdfr } 18759336Sdfr } 18769336Sdfr splx(s); 18779336Sdfr} 18789336Sdfr 18799336Sdfr/* 18809336Sdfr * Map errnos to NFS error numbers. For Version 3 also filter out error 18819336Sdfr * numbers not specified for the associated procedure. 18829336Sdfr */ 18835455Sdgint 18849336Sdfrnfsrv_errmap(nd, err) 18859336Sdfr struct nfsrv_descript *nd; 18869336Sdfr register int err; 18879336Sdfr{ 18889336Sdfr register short *defaulterrp, *errp; 18899336Sdfr 18909336Sdfr if (nd->nd_flag & ND_NFSV3) { 18919336Sdfr if (nd->nd_procnum <= NFSPROC_COMMIT) { 18929336Sdfr errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 18939336Sdfr while (*++errp) { 18949336Sdfr if (*errp == err) 18959336Sdfr return (err); 18969336Sdfr else if (*errp > err) 18979336Sdfr break; 18989336Sdfr } 18999336Sdfr return ((int)*defaulterrp); 19009336Sdfr } else 19019336Sdfr return (err & 0xffff); 19029336Sdfr } 19039336Sdfr if (err <= ELAST) 19049336Sdfr return ((int)nfsrv_v2errmap[err - 1]); 19059336Sdfr return (NFSERR_IO); 19069336Sdfr} 19079336Sdfr 19089336Sdfrint 19099356Sdgnfsrv_vmio(struct vnode *vp) { 19105455Sdg vm_object_t object; 19115455Sdg 19129356Sdg if ((vp == NULL) || (vp->v_type != VREG)) 19135455Sdg return 1; 19145455Sdg 19155455Sdgretry: 19169356Sdg if ((vp->v_flag & VVMIO) == 0) { 19179456Sdg struct vattr vat; 19189456Sdg struct proc *p = curproc; 19199456Sdg 19209456Sdg if (VOP_GETATTR(vp, &vat, p->p_ucred, p) != 0) 19219456Sdg panic("nfsrv_vmio: VOP_GETATTR failed"); 19229456Sdg 19239588Sdg (void) vnode_pager_alloc(vp, vat.va_size, 0, 0); 19249456Sdg 19255455Sdg vp->v_flag |= VVMIO; 19265455Sdg } else { 19279356Sdg if ((object = vp->v_object) && 19285455Sdg (object->flags & OBJ_DEAD)) { 19299356Sdg tsleep(object, PVM, "nfdead", 0); 19305455Sdg goto retry; 19315455Sdg } 19329356Sdg if (!object) 19335455Sdg panic("nfsrv_vmio: VMIO object missing"); 19349507Sdg vm_object_reference(object); 19355455Sdg } 19365455Sdg return 0; 19375455Sdg} 19385455Sdgint 19399356Sdgnfsrv_vput(struct vnode *vp) { 19409356Sdg if ((vp->v_flag & VVMIO) && vp->v_object) { 19419356Sdg vput(vp); 19429356Sdg vm_object_deallocate(vp->v_object); 19436210Sdg } else { 19449356Sdg vput(vp); 19455455Sdg } 19465455Sdg return 0; 19475455Sdg} 19485455Sdgint 19499356Sdgnfsrv_vrele(struct vnode *vp) { 19509356Sdg if ((vp->v_flag & VVMIO) && vp->v_object) { 19519356Sdg vrele(vp); 19529356Sdg vm_object_deallocate(vp->v_object); 19536210Sdg } else { 19549356Sdg vrele(vp); 19555455Sdg } 19565455Sdg return 0; 19575455Sdg} 1958