nfs_subs.c revision 36176
1139749Simp/* 2578Srgrimes * Copyright (c) 1989, 1993 3578Srgrimes * The Regents of the University of California. All rights reserved. 41197Srgrimes * 56604Sache * This code is derived from software contributed to Berkeley by 61197Srgrimes * Rick Macklem at The University of Guelph. 71197Srgrimes * 81197Srgrimes * Redistribution and use in source and binary forms, with or without 91197Srgrimes * modification, are permitted provided that the following conditions 10578Srgrimes * are met: 11578Srgrimes * 1. Redistributions of source code must retain the above copyright 12578Srgrimes * notice, this list of conditions and the following disclaimer. 13578Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 14578Srgrimes * notice, this list of conditions and the following disclaimer in the 15578Srgrimes * documentation and/or other materials provided with the distribution. 16578Srgrimes * 3. All advertising materials mentioning features or use of this software 17578Srgrimes * must display the following acknowledgement: 18578Srgrimes * This product includes software developed by the University of 19578Srgrimes * California, Berkeley and its contributors. 20578Srgrimes * 4. Neither the name of the University nor the names of its contributors 21578Srgrimes * may be used to endorse or promote products derived from this software 22578Srgrimes * without specific prior written permission. 231197Srgrimes * 24578Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25578Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26578Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27578Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28578Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29578Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30578Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31578Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32578Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33578Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34578Srgrimes * SUCH DAMAGE. 35578Srgrimes * 36578Srgrimes * @(#)nfs_subs.c 8.3 (Berkeley) 1/4/94 37578Srgrimes * $Id: nfs_subs.c,v 1.53 1998/04/06 11:41:07 phk Exp $ 38578Srgrimes */ 39578Srgrimes 40578Srgrimes/* 41578Srgrimes * These functions support the macros and help fiddle mbuf chains for 42578Srgrimes * the nfs op functions. They do things like create the rpc header and 43578Srgrimes * copy data between mbuf chains and uio lists. 44119418Sobrien */ 45119418Sobrien#include <sys/param.h> 46119418Sobrien#include <sys/buf.h> 47260276Sdim#include <sys/proc.h> 48578Srgrimes#include <sys/systm.h> 492056Swollman#include <sys/kernel.h> 502056Swollman#include <sys/mount.h> 5161011Speter#include <sys/vnode.h> 522056Swollman#include <sys/namei.h> 5324131Sbde#include <sys/mbuf.h> 5460041Sphk#include <sys/socket.h> 552056Swollman#include <sys/stat.h> 56104545Smdodd#include <sys/malloc.h> 5761011Speter#include <sys/sysent.h> 583816Swollman#include <sys/syscall.h> 59104445Smdodd 60104445Smdodd#include <vm/vm.h> 61104445Smdodd#include <vm/vm_object.h> 627430Sbde#include <vm/vm_extern.h> 63104445Smdodd#include <vm/vm_zone.h> 64104445Smdodd 65104445Smdodd#include <nfs/rpcv2.h> 66104445Smdodd#include <nfs/nfsproto.h> 67578Srgrimes#include <nfs/nfs.h> 68115477Sphk#include <nfs/nfsnode.h> 698375Srgrimes#include <nfs/xdr_subs.h> 70104445Smdodd#include <nfs/nfsm_subs.h> 71104445Smdodd#include <nfs/nfsmount.h> 72104445Smdodd#include <nfs/nqnfs.h> 738375Srgrimes#include <nfs/nfsrtt.h> 748375Srgrimes 758375Srgrimes#include <miscfs/specfs/specdev.h> 76578Srgrimes 772395Sache#include <netinet/in.h> 78578Srgrimes#ifdef ISO 79578Srgrimes#include <netiso/iso.h> 8014654Sache#endif 8114654Sache 8214654Sache/* 8314654Sache * Data items converted to xdr at startup, since they are constant 8414654Sache * This is kinda hokey, but may save a little time doing byte swaps 8514654Sache */ 8614654Sacheu_long nfs_xdrneg1; 8714654Sacheu_long rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 8814654Sache rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 89578Srgrimes rpc_auth_kerb; 90578Srgrimesu_long nfs_prog, nqnfs_prog, nfs_true, nfs_false; 91578Srgrimes 92578Srgrimes/* And other global data */ 93578Srgrimesstatic u_long nfs_xid = 0; 94578Srgrimesstatic enum vtype nv2tov_type[8]= { 95578Srgrimes VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON 961241Sjkh}; 971241Sjkhenum vtype nv3tov_type[8]= { 981241Sjkh VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO 991241Sjkh}; 1001241Sjkh 1011237Sjkhint nfs_mount_type; 1022477Sacheint nfs_ticks; 1032477Sache 1044480Sachestruct nfs_reqq nfs_reqq; 1054480Sachestruct nfssvc_sockhead nfssvc_sockhead; 1064480Sacheint nfssvc_sockhead_flag; 10713874Sachestruct nfsd_head nfsd_head; 10813874Sacheint nfsd_head_flag; 10913874Sachestruct nfs_bufq nfs_bufq; 1104480Sachestruct nqtimerhead nqtimerhead; 111578Srgrimesstruct nqfhhashhead *nqfhhashtbl; 112578Srgrimesu_long nqfhhash; 113578Srgrimes 114578Srgrimes#ifndef NFS_NOSERVER 115578Srgrimes/* 116578Srgrimes * Mapping of old NFS Version 2 RPC numbers to generic numbers. 117578Srgrimes */ 118578Srgrimesint nfsv3_procid[NFS_NPROCS] = { 119104445Smdodd NFSPROC_NULL, 12011872Sphk NFSPROC_GETATTR, 121104445Smdodd NFSPROC_SETATTR, 12211872Sphk NFSPROC_NOOP, 123104445Smdodd NFSPROC_LOOKUP, 124104445Smdodd NFSPROC_READLINK, 125104445Smdodd NFSPROC_READ, 126104445Smdodd NFSPROC_NOOP, 127104445Smdodd NFSPROC_WRITE, 128104445Smdodd NFSPROC_CREATE, 129104445Smdodd NFSPROC_REMOVE, 130104445Smdodd NFSPROC_RENAME, 131104445Smdodd NFSPROC_LINK, 132104445Smdodd NFSPROC_SYMLINK, 133104445Smdodd NFSPROC_MKDIR, 134104445Smdodd NFSPROC_RMDIR, 135104445Smdodd NFSPROC_READDIR, 136104445Smdodd NFSPROC_FSSTAT, 137141031Ssobomax NFSPROC_NOOP, 138141031Ssobomax NFSPROC_NOOP, 139104445Smdodd NFSPROC_NOOP, 140104445Smdodd NFSPROC_NOOP, 141104445Smdodd NFSPROC_NOOP, 14231016Sphk NFSPROC_NOOP, 143104445Smdodd NFSPROC_NOOP, 14431016Sphk NFSPROC_NOOP 145104445Smdodd}; 146104445Smdodd 147104445Smdodd#endif /* NFS_NOSERVER */ 148104445Smdodd/* 149104445Smdodd * and the reverse mapping from generic to Version 2 procedure numbers 150104445Smdodd */ 151104445Smdoddint nfsv2_procid[NFS_NPROCS] = { 152104445Smdodd NFSV2PROC_NULL, 153104445Smdodd NFSV2PROC_GETATTR, 154104445Smdodd NFSV2PROC_SETATTR, 155104445Smdodd NFSV2PROC_LOOKUP, 156130585Sphk NFSV2PROC_NOOP, 157578Srgrimes NFSV2PROC_READLINK, 158104445Smdodd NFSV2PROC_READ, 159104445Smdodd NFSV2PROC_WRITE, 160104445Smdodd NFSV2PROC_CREATE, 161104445Smdodd NFSV2PROC_MKDIR, 162578Srgrimes NFSV2PROC_SYMLINK, 16337389Sjulian NFSV2PROC_CREATE, 164126080Sphk NFSV2PROC_REMOVE, 165111815Sphk NFSV2PROC_RMDIR, 166111815Sphk NFSV2PROC_RENAME, 167111815Sphk NFSV2PROC_LINK, 168111815Sphk NFSV2PROC_READDIR, 169111815Sphk NFSV2PROC_NOOP, 170111815Sphk NFSV2PROC_STATFS, 171126080Sphk NFSV2PROC_NOOP, 17247625Sphk NFSV2PROC_NOOP, 17337389Sjulian NFSV2PROC_NOOP, 174578Srgrimes NFSV2PROC_NOOP, 175578Srgrimes NFSV2PROC_NOOP, 176578Srgrimes NFSV2PROC_NOOP, 1776604Sache NFSV2PROC_NOOP, 1786604Sache}; 1796604Sache 1806604Sache#ifndef NFS_NOSERVER 181578Srgrimes/* 1822477Sache * Maps errno values to nfs error numbers. 1832477Sache * Use NFSERR_IO as the catch all for ones not specifically defined in 184578Srgrimes * RFC 1094. 185578Srgrimes */ 1862477Sachestatic u_char nfsrv_v2errmap[ELAST] = { 18710069Sjoerg NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 188578Srgrimes NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 189104445Smdodd NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 190104445Smdodd NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 191578Srgrimes NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 192104445Smdodd NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 1938876Srgrimes NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 194104445Smdodd NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 195104445Smdodd NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 196106490Smdodd NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 197104445Smdodd NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 198106490Smdodd NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 199578Srgrimes NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 200578Srgrimes NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 201578Srgrimes NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 202104445Smdodd NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 203578Srgrimes NFSERR_IO, 2044480Sache}; 205104545Smdodd 206104445Smdodd/* 207104445Smdodd * Maps errno values to nfs error numbers. 208104545Smdodd * Although it is not obvious whether or not NFS clients really care if 209104445Smdodd * a returned error value is in the specified list for the procedure, the 210106490Smdodd * safest thing to do is filter them appropriately. For Version 2, the 211578Srgrimes * X/Open XNFS document is the only specification that defines error values 212578Srgrimes * for each RPC (The RFC simply lists all possible error values for all RPCs), 213104441Smdodd * so I have decided to not do this for Version 2. 214130585Sphk * The first entry is the default error return and the rest are the valid 215578Srgrimes * errors for that RPC in increasing numeric order. 216104445Smdodd */ 217104545Smdoddstatic short nfsv3err_null[] = { 2188876Srgrimes 0, 219104445Smdodd 0, 2208876Srgrimes}; 221578Srgrimes 222106490Smdoddstatic short nfsv3err_getattr[] = { 223106490Smdodd NFSERR_IO, 224578Srgrimes NFSERR_IO, 225578Srgrimes NFSERR_STALE, 226106490Smdodd NFSERR_BADHANDLE, 227106490Smdodd NFSERR_SERVERFAULT, 228578Srgrimes 0, 229104445Smdodd}; 230106490Smdodd 231578Srgrimesstatic short nfsv3err_setattr[] = { 232106490Smdodd NFSERR_IO, 233106490Smdodd NFSERR_PERM, 2346604Sache NFSERR_IO, 235106490Smdodd NFSERR_ACCES, 236104445Smdodd NFSERR_INVAL, 237106490Smdodd NFSERR_NOSPC, 2386604Sache NFSERR_ROFS, 2396604Sache NFSERR_DQUOT, 2406604Sache NFSERR_STALE, 2416604Sache NFSERR_BADHANDLE, 242106490Smdodd NFSERR_NOT_SYNC, 243104445Smdodd NFSERR_SERVERFAULT, 244106490Smdodd 0, 2452477Sache}; 246106490Smdodd 247104445Smdoddstatic short nfsv3err_lookup[] = { 248106490Smdodd NFSERR_IO, 2492477Sache NFSERR_NOENT, 250106490Smdodd NFSERR_IO, 251104445Smdodd NFSERR_ACCES, 252106490Smdodd NFSERR_NOTDIR, 2536604Sache NFSERR_NAMETOL, 254578Srgrimes NFSERR_STALE, 255111731Sphk NFSERR_BADHANDLE, 256104445Smdodd NFSERR_SERVERFAULT, 257106490Smdodd 0, 258104545Smdodd}; 259578Srgrimes 260106490Smdoddstatic short nfsv3err_access[] = { 261106490Smdodd NFSERR_IO, 262106490Smdodd NFSERR_IO, 263578Srgrimes NFSERR_STALE, 264104545Smdodd NFSERR_BADHANDLE, 265106490Smdodd NFSERR_SERVERFAULT, 266106490Smdodd 0, 26751111Sjulian}; 268106490Smdodd 269578Srgrimesstatic short nfsv3err_readlink[] = { 270578Srgrimes NFSERR_IO, 271104441Smdodd NFSERR_IO, 272130585Sphk NFSERR_ACCES, 273578Srgrimes NFSERR_INVAL, 274104445Smdodd NFSERR_STALE, 2758876Srgrimes NFSERR_BADHANDLE, 276104445Smdodd NFSERR_NOTSUPP, 2778876Srgrimes NFSERR_SERVERFAULT, 278106490Smdodd 0, 279106490Smdodd}; 280578Srgrimes 281104445Smdoddstatic short nfsv3err_read[] = { 282106490Smdodd NFSERR_IO, 283106490Smdodd NFSERR_IO, 284578Srgrimes NFSERR_NXIO, 285106490Smdodd NFSERR_ACCES, 286578Srgrimes NFSERR_INVAL, 287578Srgrimes NFSERR_STALE, 288104441Smdodd NFSERR_BADHANDLE, 28959249Sphk NFSERR_SERVERFAULT, 290578Srgrimes 0, 291104445Smdodd}; 2928876Srgrimes 293104445Smdoddstatic short nfsv3err_write[] = { 294578Srgrimes NFSERR_IO, 295578Srgrimes NFSERR_IO, 296106490Smdodd NFSERR_ACCES, 297104545Smdodd NFSERR_INVAL, 29859249Sphk NFSERR_FBIG, 299578Srgrimes NFSERR_NOSPC, 300578Srgrimes NFSERR_ROFS, 301578Srgrimes NFSERR_DQUOT, 302578Srgrimes NFSERR_STALE, 30359249Sphk NFSERR_BADHANDLE, 30459249Sphk NFSERR_SERVERFAULT, 305578Srgrimes 0, 306578Srgrimes}; 3078876Srgrimes 308578Srgrimesstatic short nfsv3err_create[] = { 30959249Sphk NFSERR_IO, 310578Srgrimes NFSERR_IO, 3118876Srgrimes NFSERR_ACCES, 312106490Smdodd NFSERR_EXIST, 313104545Smdodd NFSERR_NOTDIR, 314104545Smdodd NFSERR_NOSPC, 315578Srgrimes NFSERR_ROFS, 3168876Srgrimes NFSERR_NAMETOL, 317104545Smdodd NFSERR_DQUOT, 318104545Smdodd NFSERR_STALE, 319578Srgrimes NFSERR_BADHANDLE, 320112946Sphk NFSERR_NOTSUPP, 3218876Srgrimes NFSERR_SERVERFAULT, 322578Srgrimes 0, 323104445Smdodd}; 324578Srgrimes 325578Srgrimesstatic short nfsv3err_mkdir[] = { 326578Srgrimes NFSERR_IO, 32759249Sphk NFSERR_IO, 328578Srgrimes NFSERR_ACCES, 32959249Sphk NFSERR_EXIST, 330578Srgrimes NFSERR_NOTDIR, 331578Srgrimes NFSERR_NOSPC, 332578Srgrimes NFSERR_ROFS, 333578Srgrimes NFSERR_NAMETOL, 334104441Smdodd NFSERR_DQUOT, 335104445Smdodd NFSERR_STALE, 336578Srgrimes NFSERR_BADHANDLE, 33759249Sphk NFSERR_NOTSUPP, 3388876Srgrimes NFSERR_SERVERFAULT, 339106490Smdodd 0, 340578Srgrimes}; 3412477Sache 342578Srgrimesstatic short nfsv3err_symlink[] = { 343137045Sphk NFSERR_IO, 34415574Sphk NFSERR_IO, 345578Srgrimes NFSERR_ACCES, 346578Srgrimes NFSERR_EXIST, 347106490Smdodd NFSERR_NOTDIR, 348578Srgrimes NFSERR_NOSPC, 349578Srgrimes NFSERR_ROFS, 350578Srgrimes NFSERR_NAMETOL, 351578Srgrimes NFSERR_DQUOT, 352578Srgrimes NFSERR_STALE, 353106490Smdodd NFSERR_BADHANDLE, 354106490Smdodd NFSERR_NOTSUPP, 355578Srgrimes NFSERR_SERVERFAULT, 356106490Smdodd 0, 357578Srgrimes}; 358578Srgrimes 359578Srgrimesstatic short nfsv3err_mknod[] = { 360104441Smdodd NFSERR_IO, 361130585Sphk NFSERR_IO, 362578Srgrimes NFSERR_ACCES, 363104445Smdodd NFSERR_EXIST, 364104545Smdodd NFSERR_NOTDIR, 3658876Srgrimes NFSERR_NOSPC, 366104445Smdodd NFSERR_ROFS, 367578Srgrimes NFSERR_NAMETOL, 368104445Smdodd NFSERR_DQUOT, 369106490Smdodd NFSERR_STALE, 37037618Sbde NFSERR_BADHANDLE, 371578Srgrimes NFSERR_NOTSUPP, 372578Srgrimes NFSERR_SERVERFAULT, 37314285Sache NFSERR_BADTYPE, 37414285Sache 0, 37514285Sache}; 37614285Sache 37714285Sachestatic short nfsv3err_remove[] = { 37814285Sache NFSERR_IO, 37914285Sache NFSERR_NOENT, 38014285Sache NFSERR_IO, 381106490Smdodd NFSERR_ACCES, 38214285Sache NFSERR_NOTDIR, 383104445Smdodd NFSERR_ROFS, 38414285Sache NFSERR_NAMETOL, 385106490Smdodd NFSERR_STALE, 386106490Smdodd NFSERR_BADHANDLE, 38714285Sache NFSERR_SERVERFAULT, 388106490Smdodd 0, 389106490Smdodd}; 39014285Sache 391104445Smdoddstatic short nfsv3err_rmdir[] = { 39214285Sache NFSERR_IO, 393104445Smdodd NFSERR_NOENT, 39414285Sache NFSERR_IO, 395104445Smdodd NFSERR_ACCES, 39614285Sache NFSERR_EXIST, 397104445Smdodd NFSERR_NOTDIR, 39814285Sache NFSERR_INVAL, 39914285Sache NFSERR_ROFS, 400106490Smdodd NFSERR_NAMETOL, 401106490Smdodd NFSERR_NOTEMPTY, 402106490Smdodd NFSERR_STALE, 40314285Sache NFSERR_BADHANDLE, 404106490Smdodd NFSERR_NOTSUPP, 405104445Smdodd NFSERR_SERVERFAULT, 406106490Smdodd 0, 40714285Sache}; 40814285Sache 40914285Sachestatic short nfsv3err_rename[] = { 410106490Smdodd NFSERR_IO, 411106490Smdodd NFSERR_NOENT, 412111731Sphk NFSERR_IO, 41314285Sache NFSERR_ACCES, 414106490Smdodd NFSERR_EXIST, 415106490Smdodd NFSERR_XDEV, 416106490Smdodd NFSERR_NOTDIR, 417104445Smdodd NFSERR_ISDIR, 418106490Smdodd NFSERR_INVAL, 419106490Smdodd NFSERR_NOSPC, 42014285Sache NFSERR_ROFS, 42114285Sache NFSERR_MLINK, 42214285Sache NFSERR_NAMETOL, 423104545Smdodd NFSERR_NOTEMPTY, 424106490Smdodd NFSERR_DQUOT, 425104545Smdodd NFSERR_STALE, 426104545Smdodd NFSERR_BADHANDLE, 427106490Smdodd NFSERR_NOTSUPP, 428104545Smdodd NFSERR_SERVERFAULT, 429104545Smdodd 0, 430578Srgrimes}; 431104445Smdodd 432578Srgrimesstatic short nfsv3err_link[] = { 433104445Smdodd NFSERR_IO, 4342477Sache NFSERR_IO, 435104445Smdodd NFSERR_ACCES, 436141031Ssobomax NFSERR_EXIST, 437141031Ssobomax NFSERR_XDEV, 438578Srgrimes NFSERR_NOTDIR, 439141031Ssobomax NFSERR_INVAL, 440578Srgrimes NFSERR_NOSPC, 441104445Smdodd NFSERR_ROFS, 442578Srgrimes NFSERR_MLINK, 443104445Smdodd NFSERR_NAMETOL, 444578Srgrimes NFSERR_DQUOT, 445104445Smdodd NFSERR_STALE, 446578Srgrimes NFSERR_BADHANDLE, 447104445Smdodd NFSERR_NOTSUPP, 448578Srgrimes NFSERR_SERVERFAULT, 449104445Smdodd 0, 450106490Smdodd}; 451106490Smdodd 452578Srgrimesstatic short nfsv3err_readdir[] = { 453104445Smdodd NFSERR_IO, 454578Srgrimes NFSERR_IO, 455106490Smdodd NFSERR_ACCES, 456578Srgrimes NFSERR_NOTDIR, 457578Srgrimes NFSERR_STALE, 458578Srgrimes NFSERR_BADHANDLE, 459578Srgrimes NFSERR_BAD_COOKIE, 460104441Smdodd NFSERR_TOOSMALL, 461130585Sphk NFSERR_SERVERFAULT, 462578Srgrimes 0, 463104445Smdodd}; 464578Srgrimes 465578Srgrimesstatic short nfsv3err_readdirplus[] = { 466104445Smdodd NFSERR_IO, 467104445Smdodd NFSERR_IO, 468104445Smdodd NFSERR_ACCES, 469106490Smdodd NFSERR_NOTDIR, 470106490Smdodd NFSERR_STALE, 471106490Smdodd NFSERR_BADHANDLE, 472106490Smdodd NFSERR_BAD_COOKIE, 473578Srgrimes NFSERR_NOTSUPP, 474106490Smdodd NFSERR_TOOSMALL, 475578Srgrimes NFSERR_SERVERFAULT, 476578Srgrimes 0, 477578Srgrimes}; 478578Srgrimes 479578Srgrimesstatic short nfsv3err_fsstat[] = { 480578Srgrimes NFSERR_IO, 481578Srgrimes NFSERR_IO, 4821197Srgrimes NFSERR_STALE, 4831197Srgrimes NFSERR_BADHANDLE, 484578Srgrimes NFSERR_SERVERFAULT, 485578Srgrimes 0, 486578Srgrimes}; 487578Srgrimes 4881197Srgrimesstatic short nfsv3err_fsinfo[] = { 4891197Srgrimes NFSERR_STALE, 490578Srgrimes NFSERR_STALE, 491578Srgrimes NFSERR_BADHANDLE, 492578Srgrimes NFSERR_SERVERFAULT, 493578Srgrimes 0, 49411872Sphk}; 4951197Srgrimes 496104445Smdoddstatic short nfsv3err_pathconf[] = { 497578Srgrimes NFSERR_STALE, 498104445Smdodd NFSERR_STALE, 499578Srgrimes NFSERR_BADHANDLE, 50011872Sphk NFSERR_SERVERFAULT, 501578Srgrimes 0, 5021197Srgrimes}; 5031197Srgrimes 504104445Smdoddstatic short nfsv3err_commit[] = { 5051197Srgrimes NFSERR_IO, 5061197Srgrimes NFSERR_IO, 5071197Srgrimes NFSERR_STALE, 5081197Srgrimes NFSERR_BADHANDLE, 509104445Smdodd NFSERR_SERVERFAULT, 510106490Smdodd 0, 5111197Srgrimes}; 51213598Sjoerg 513104445Smdoddstatic short *nfsrv_v3errmap[] = { 514106490Smdodd nfsv3err_null, 5151197Srgrimes nfsv3err_getattr, 5161197Srgrimes nfsv3err_setattr, 517978Sjkh nfsv3err_lookup, 518578Srgrimes nfsv3err_access, 519104445Smdodd nfsv3err_readlink, 520104445Smdodd nfsv3err_read, 521578Srgrimes nfsv3err_write, 5221197Srgrimes nfsv3err_create, 5231197Srgrimes nfsv3err_mkdir, 524578Srgrimes nfsv3err_symlink, 525104445Smdodd nfsv3err_mknod, 526578Srgrimes nfsv3err_remove, 527578Srgrimes nfsv3err_rmdir, 528578Srgrimes nfsv3err_rename, 529104445Smdodd nfsv3err_link, 530578Srgrimes nfsv3err_readdir, 531104445Smdodd nfsv3err_readdirplus, 532578Srgrimes nfsv3err_fsstat, 533578Srgrimes nfsv3err_fsinfo, 534578Srgrimes nfsv3err_pathconf, 535104445Smdodd nfsv3err_commit, 536578Srgrimes}; 5371197Srgrimes 5381197Srgrimes#endif /* NFS_NOSERVER */ 5391197Srgrimes 5401197Srgrimesextern struct nfsrtt nfsrtt; 5412477Sacheextern time_t nqnfsstarttime; 542104445Smdoddextern int nqsrv_clockskew; 543578Srgrimesextern int nqsrv_writeslack; 5441197Srgrimesextern int nqsrv_maxlease; 545104445Smdoddextern struct nfsstats nfsstats; 546104445Smdoddextern int nqnfs_piggy[NFS_NPROCS]; 547104445Smdoddextern nfstype nfsv2_type[9]; 5481197Srgrimesextern nfstype nfsv3_type[9]; 549104445Smdoddextern struct nfsnodehashhead *nfsnodehashtbl; 5501197Srgrimesextern u_long nfsnodehash; 551104445Smdodd 552104445Smdoddstruct getfh_args; 553104445Smdoddextern int getfh(struct proc *, struct getfh_args *, int *); 5541197Srgrimesstruct nfssvc_args; 5555178Sacheextern int nfssvc(struct proc *, struct nfssvc_args *, int *); 556104445Smdodd 5575226SacheLIST_HEAD(nfsnodehashhead, nfsnode); 558104445Smdodd 559104445Smdoddint nfs_webnamei __P((struct nameidata *, struct vnode *, struct proc *)); 5601197Srgrimes 561104445Smdoddu_quad_t 5624480Sachenfs_curusec() 5634480Sache{ 56413874Sache struct timeval tv; 565104445Smdodd 566104445Smdodd getmicrotime(&tv); 56713874Sache return ((u_quad_t)tv.tv_sec * 1000000 + (u_quad_t)tv.tv_usec); 568104445Smdodd} 569104445Smdodd 5704480Sache/* 571104445Smdodd * Create the header for an rpc request packet 572104445Smdodd * The hsiz is the size of the rest of the nfs request header. 5734480Sache * (just used to decide if a cluster is a good idea) 5744480Sache */ 5754480Sachestruct mbuf * 576104445Smdoddnfsm_reqh(vp, procid, hsiz, bposp) 577104445Smdodd struct vnode *vp; 5784480Sache u_long procid; 5794480Sache int hsiz; 580104445Smdodd caddr_t *bposp; 581104445Smdodd{ 582104445Smdodd register struct mbuf *mb; 5834480Sache register u_long *tl; 5844480Sache register caddr_t bpos; 585104445Smdodd struct mbuf *mb2; 586104445Smdodd struct nfsmount *nmp; 5874480Sache int nqflag; 5884480Sache 5895226Sache MGET(mb, M_WAIT, MT_DATA); 590104445Smdodd if (hsiz >= MINCLSIZE) 591104445Smdodd MCLGET(mb, M_WAIT); 592104445Smdodd mb->m_len = 0; 593104445Smdodd bpos = mtod(mb, caddr_t); 594106490Smdodd 595578Srgrimes /* 596578Srgrimes * For NQNFS, add lease request. 597978Sjkh */ 5981197Srgrimes if (vp) { 599104445Smdodd nmp = VFSTONFS(vp->v_mount); 600578Srgrimes if (nmp->nm_flag & NFSMNT_NQNFS) { 601578Srgrimes nqflag = NQNFS_NEEDLEASE(vp, procid); 602578Srgrimes if (nqflag) { 6035226Sache nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); 6042477Sache *tl++ = txdr_unsigned(nqflag); 605104445Smdodd *tl = txdr_unsigned(nmp->nm_leaseterm); 606106490Smdodd } else { 6072477Sache nfsm_build(tl, u_long *, NFSX_UNSIGNED); 608578Srgrimes *tl = 0; 609106490Smdodd } 610578Srgrimes } 611578Srgrimes } 6121197Srgrimes /* Finally, return values */ 613104445Smdodd *bposp = bpos; 614578Srgrimes return (mb); 615578Srgrimes} 616578Srgrimes 617104445Smdodd/* 618104445Smdodd * Build the RPC header and fill in the authorization info. 619106490Smdodd * The authorization string argument is only used when the credentials 620578Srgrimes * come from outside of the kernel. 621578Srgrimes * Returns the head of the mbuf list. 622578Srgrimes */ 623106490Smdoddstruct mbuf * 624578Srgrimesnfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 625578Srgrimes verf_str, mrest, mrest_len, mbp, xidp) 6261197Srgrimes register struct ucred *cr; 627104445Smdodd int nmflag; 628578Srgrimes int procid; 629578Srgrimes int auth_type; 630578Srgrimes int auth_len; 631578Srgrimes char *auth_str; 632578Srgrimes int verf_len; 633104445Smdodd char *verf_str; 634104445Smdodd struct mbuf *mrest; 6356604Sache int mrest_len; 636106490Smdodd struct mbuf **mbp; 637106490Smdodd u_long *xidp; 6386604Sache{ 639578Srgrimes register struct mbuf *mb; 640106490Smdodd register u_long *tl; 641578Srgrimes register caddr_t bpos; 642104445Smdodd register int i; 643106490Smdodd struct mbuf *mreq, *mb2; 644106490Smdodd int siz, grpsiz, authsiz; 645578Srgrimes static u_long base; 646578Srgrimes 6472477Sache authsiz = nfsm_rndup(auth_len); 648104445Smdodd MGETHDR(mb, M_WAIT, MT_DATA); 649578Srgrimes if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 650104445Smdodd MCLGET(mb, M_WAIT); 651578Srgrimes } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 652106490Smdodd MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 653106490Smdodd } else { 6548375Srgrimes MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 655104445Smdodd } 656106490Smdodd mb->m_len = 0; 657578Srgrimes mreq = mb; 658578Srgrimes bpos = mtod(mb, caddr_t); 659106490Smdodd 660106490Smdodd /* 661106490Smdodd * First the RPC header. 662106490Smdodd */ 663106490Smdodd nfsm_build(tl, u_long *, 8 * NFSX_UNSIGNED); 664578Srgrimes 665578Srgrimes /* Get a pretty random xid to start with */ 6661197Srgrimes if (!nfs_xid) 667104445Smdodd nfs_xid = random(); 668578Srgrimes /* 669578Srgrimes * Skip zero xid if it should ever happen. 6708876Srgrimes */ 671578Srgrimes if (++nfs_xid == 0) 672578Srgrimes nfs_xid++; 673104445Smdodd 674104445Smdodd *tl++ = *xidp = txdr_unsigned(nfs_xid); 675106490Smdodd *tl++ = rpc_call; 676578Srgrimes *tl++ = rpc_vers; 677578Srgrimes if (nmflag & NFSMNT_NQNFS) { 678578Srgrimes *tl++ = txdr_unsigned(NQNFS_PROG); 679106490Smdodd *tl++ = txdr_unsigned(NQNFS_VER3); 680578Srgrimes } else { 681578Srgrimes *tl++ = txdr_unsigned(NFS_PROG); 6821197Srgrimes if (nmflag & NFSMNT_NFSV3) 683104445Smdodd *tl++ = txdr_unsigned(NFS_VER3); 684578Srgrimes else 6852477Sache *tl++ = txdr_unsigned(NFS_VER2); 6868876Srgrimes } 6872477Sache if (nmflag & NFSMNT_NFSV3) 688578Srgrimes *tl++ = txdr_unsigned(procid); 689104445Smdodd else 690104445Smdodd *tl++ = txdr_unsigned(nfsv2_procid[procid]); 691578Srgrimes 692578Srgrimes /* 6932477Sache * And then the authorization cred. 694104445Smdodd */ 695106490Smdodd *tl++ = txdr_unsigned(auth_type); 6962477Sache *tl = txdr_unsigned(authsiz); 697578Srgrimes switch (auth_type) { 698104445Smdodd case RPCAUTH_UNIX: 699106490Smdodd nfsm_build(tl, u_long *, auth_len); 700578Srgrimes *tl++ = 0; /* stamp ?? */ 7012477Sache *tl++ = 0; /* NULL hostname */ 702106490Smdodd *tl++ = txdr_unsigned(cr->cr_uid); 703578Srgrimes *tl++ = txdr_unsigned(cr->cr_groups[0]); 704578Srgrimes grpsiz = (auth_len >> 2) - 5; 7051197Srgrimes *tl++ = txdr_unsigned(grpsiz); 7061197Srgrimes for (i = 1; i <= grpsiz; i++) 707578Srgrimes *tl++ = txdr_unsigned(cr->cr_groups[i]); 708578Srgrimes break; 709578Srgrimes case RPCAUTH_KERB4: 71013770Sache siz = auth_len; 71113770Sache while (siz > 0) { 71213770Sache if (M_TRAILINGSPACE(mb) == 0) { 71313770Sache MGET(mb2, M_WAIT, MT_DATA); 714578Srgrimes if (siz >= MINCLSIZE) 715578Srgrimes MCLGET(mb2, M_WAIT); 7161197Srgrimes mb->m_next = mb2; 71713770Sache mb = mb2; 718578Srgrimes mb->m_len = 0; 71913770Sache bpos = mtod(mb, caddr_t); 72013770Sache } 721578Srgrimes i = min(siz, M_TRAILINGSPACE(mb)); 722578Srgrimes bcopy(auth_str, bpos, i); 7231197Srgrimes mb->m_len += i; 724104445Smdodd auth_str += i; 725578Srgrimes bpos += i; 726578Srgrimes siz -= i; 727578Srgrimes } 728106490Smdodd if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 729578Srgrimes for (i = 0; i < siz; i++) 7302477Sache *bpos++ = '\0'; 7312477Sache mb->m_len += siz; 732578Srgrimes } 733104445Smdodd break; 734106490Smdodd }; 735578Srgrimes 736578Srgrimes /* 737106490Smdodd * And the verifier... 738104445Smdodd */ 739106490Smdodd nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); 740578Srgrimes if (verf_str) { 741578Srgrimes *tl++ = txdr_unsigned(RPCAUTH_KERB4); 742106490Smdodd *tl = txdr_unsigned(verf_len); 743106490Smdodd siz = verf_len; 7446604Sache while (siz > 0) { 745106490Smdodd if (M_TRAILINGSPACE(mb) == 0) { 746106490Smdodd MGET(mb2, M_WAIT, MT_DATA); 747578Srgrimes if (siz >= MINCLSIZE) 748578Srgrimes MCLGET(mb2, M_WAIT); 749106490Smdodd mb->m_next = mb2; 750578Srgrimes mb = mb2; 751578Srgrimes mb->m_len = 0; 752578Srgrimes bpos = mtod(mb, caddr_t); 753578Srgrimes } 754578Srgrimes i = min(siz, M_TRAILINGSPACE(mb)); 755578Srgrimes bcopy(verf_str, bpos, i); 756578Srgrimes mb->m_len += i; 757578Srgrimes verf_str += i; 7581197Srgrimes bpos += i; 75925056Sbde siz -= i; 76025056Sbde } 761104445Smdodd if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 762104445Smdodd for (i = 0; i < siz; i++) 763104445Smdodd *bpos++ = '\0'; 764104445Smdodd mb->m_len += siz; 765104445Smdodd } 76625056Sbde } else { 76725056Sbde *tl++ = txdr_unsigned(RPCAUTH_NULL); 76825056Sbde *tl = 0; 769104445Smdodd } 770578Srgrimes mb->m_next = mrest; 771104445Smdodd mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 772104445Smdodd mreq->m_pkthdr.rcvif = (struct ifnet *)0; 773104445Smdodd *mbp = mb; 774578Srgrimes return (mreq); 775104445Smdodd} 776578Srgrimes 777578Srgrimes/* 778104445Smdodd * copies mbuf chain to the uio scatter/gather list 779104445Smdodd */ 780104445Smdoddint 781578Srgrimesnfsm_mbuftouio(mrep, uiop, siz, dpos) 782578Srgrimes struct mbuf **mrep; 783578Srgrimes register struct uio *uiop; 784104445Smdodd int siz; 785578Srgrimes caddr_t *dpos; 786578Srgrimes{ 7876604Sache register char *mbufcp, *uiocp; 788578Srgrimes register int xfer, left, len; 789104445Smdodd register struct mbuf *mp; 790578Srgrimes long uiosiz, rem; 791104445Smdodd int error = 0; 792104445Smdodd 793578Srgrimes mp = *mrep; 794578Srgrimes mbufcp = *dpos; 795104445Smdodd len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 796104445Smdodd rem = nfsm_rndup(siz)-siz; 797578Srgrimes while (siz > 0) { 798104445Smdodd if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 799104445Smdodd return (EFBIG); 800104445Smdodd left = uiop->uio_iov->iov_len; 801578Srgrimes uiocp = uiop->uio_iov->iov_base; 802578Srgrimes if (left > siz) 803106490Smdodd left = siz; 804106490Smdodd uiosiz = left; 8056028Sache while (left > 0) { 806104445Smdodd while (len == 0) { 8072477Sache mp = mp->m_next; 8081197Srgrimes if (mp == NULL) 8098375Srgrimes return (EBADRPC); 810578Srgrimes mbufcp = mtod(mp, caddr_t); 811106490Smdodd len = mp->m_len; 812104445Smdodd } 813578Srgrimes xfer = (left > len) ? len : left; 814578Srgrimes#ifdef notdef 8156604Sache /* Not Yet.. */ 8166028Sache if (uiop->uio_iov->iov_op != NULL) 817578Srgrimes (*(uiop->uio_iov->iov_op)) 818106490Smdodd (mbufcp, uiocp, xfer); 8194389Sache else 820578Srgrimes#endif 821578Srgrimes if (uiop->uio_segflg == UIO_SYSSPACE) 8224389Sache bcopy(mbufcp, uiocp, xfer); 823106490Smdodd else 824578Srgrimes copyout(mbufcp, uiocp, xfer); 825578Srgrimes left -= xfer; 826106490Smdodd len -= xfer; 8272477Sache mbufcp += xfer; 8282477Sache uiocp += xfer; 829578Srgrimes uiop->uio_offset += xfer; 8302477Sache uiop->uio_resid -= xfer; 831106490Smdodd } 8322477Sache if (uiop->uio_iov->iov_len <= siz) { 833104445Smdodd uiop->uio_iovcnt--; 834104445Smdodd uiop->uio_iov++; 8352477Sache } else { 836104445Smdodd uiop->uio_iov->iov_base += uiosiz; 837104445Smdodd uiop->uio_iov->iov_len -= uiosiz; 838578Srgrimes } 839578Srgrimes siz -= uiosiz; 840104445Smdodd } 841578Srgrimes *dpos = mbufcp; 842578Srgrimes *mrep = mp; 843578Srgrimes if (rem > 0) { 844578Srgrimes if (len < rem) 845104445Smdodd error = nfs_adv(mrep, dpos, rem, len); 846104445Smdodd else 847578Srgrimes *dpos += rem; 848104445Smdodd } 849578Srgrimes return (error); 850578Srgrimes} 851104445Smdodd 852104445Smdodd/* 853104445Smdodd * copies a uio scatter/gather list to an mbuf chain. 854578Srgrimes * NOTE: can ony handle iovcnt == 1 855578Srgrimes */ 856106490Smdoddint 857106490Smdoddnfsm_uiotombuf(uiop, mq, siz, bpos) 858106490Smdodd register struct uio *uiop; 8596028Sache struct mbuf **mq; 8606028Sache int siz; 861104445Smdodd caddr_t *bpos; 8622477Sache{ 863106490Smdodd register char *uiocp; 8641197Srgrimes register struct mbuf *mp, *mp2; 8658375Srgrimes register int xfer, left, mlen; 8662477Sache int uiosiz, clflg, rem; 867578Srgrimes char *cp; 86859249Sphk 869578Srgrimes if (uiop->uio_iovcnt != 1) 870578Srgrimes panic("nfsm_uiotombuf: iovcnt != 1"); 871578Srgrimes 872121212Sphk if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 873578Srgrimes clflg = 1; 8748456Srgrimes else 8758375Srgrimes clflg = 0; 876578Srgrimes rem = nfsm_rndup(siz)-siz; 877578Srgrimes mp = mp2 = *mq; 878578Srgrimes while (siz > 0) { 8796028Sache left = uiop->uio_iov->iov_len; 880578Srgrimes uiocp = uiop->uio_iov->iov_base; 881106719Smdodd if (left > siz) 882106490Smdodd left = siz; 883104445Smdodd uiosiz = left; 884104445Smdodd while (left > 0) { 885104445Smdodd mlen = M_TRAILINGSPACE(mp); 886104445Smdodd if (mlen == 0) { 887104445Smdodd MGET(mp, M_WAIT, MT_DATA); 888104445Smdodd if (clflg) 889106719Smdodd MCLGET(mp, M_WAIT); 8902477Sache mp->m_len = 0; 8912762Sache mp2->m_next = mp; 8922762Sache mp2 = mp; 893104445Smdodd mlen = M_TRAILINGSPACE(mp); 8945226Sache } 8952762Sache xfer = (left > mlen) ? mlen : left; 8962762Sache#ifdef notdef 8972762Sache /* Not Yet.. */ 8982762Sache if (uiop->uio_iov->iov_op != NULL) 899578Srgrimes (*(uiop->uio_iov->iov_op)) 900104445Smdodd (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 901104445Smdodd else 902578Srgrimes#endif 903578Srgrimes if (uiop->uio_segflg == UIO_SYSSPACE) 904104445Smdodd bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 905104445Smdodd else 906578Srgrimes copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 907104445Smdodd mp->m_len += xfer; 9085226Sache left -= xfer; 9091197Srgrimes uiocp += xfer; 9108375Srgrimes uiop->uio_offset += xfer; 9112762Sache uiop->uio_resid -= xfer; 912578Srgrimes } 91359249Sphk uiop->uio_iov->iov_base += uiosiz; 9142477Sache uiop->uio_iov->iov_len -= uiosiz; 915104445Smdodd siz -= uiosiz; 916578Srgrimes } 917104445Smdodd if (rem > 0) { 918104445Smdodd if (rem > M_TRAILINGSPACE(mp)) { 919578Srgrimes MGET(mp, M_WAIT, MT_DATA); 920104445Smdodd mp->m_len = 0; 9212477Sache mp2->m_next = mp; 9225226Sache } 923104445Smdodd cp = mtod(mp, caddr_t)+mp->m_len; 924104445Smdodd for (left = 0; left < rem; left++) 925104445Smdodd *cp++ = '\0'; 926104445Smdodd mp->m_len += rem; 9272477Sache *bpos = cp; 9282477Sache } else 929578Srgrimes *bpos = mtod(mp, caddr_t)+mp->m_len; 930578Srgrimes *mq = mp; 931578Srgrimes return (0); 932578Srgrimes} 933578Srgrimes 934578Srgrimes/* 93559249Sphk * Help break down an mbuf chain by setting the first siz bytes contiguous 936578Srgrimes * pointed to by returned val. 937578Srgrimes * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 938106490Smdodd * cases. (The macros use the vars. dpos and dpos2) 939104445Smdodd */ 940578Srgrimesint 941578Srgrimesnfsm_disct(mdp, dposp, siz, left, cp2) 9425226Sache struct mbuf **mdp; 943106490Smdodd caddr_t *dposp; 944106490Smdodd int siz; 9456028Sache int left; 946104445Smdodd caddr_t *cp2; 9472477Sache{ 9482477Sache register struct mbuf *mp, *mp2; 949104445Smdodd register int siz2, xfer; 950104445Smdodd register caddr_t p; 951578Srgrimes 952578Srgrimes mp = *mdp; 953104445Smdodd while (left == 0) { 954578Srgrimes *mdp = mp = mp->m_next; 955578Srgrimes if (mp == NULL) 956578Srgrimes return (EBADRPC); 957578Srgrimes left = mp->m_len; 958578Srgrimes *dposp = mtod(mp, caddr_t); 959578Srgrimes } 960104445Smdodd if (left >= siz) { 961578Srgrimes *cp2 = *dposp; 962578Srgrimes *dposp += siz; 963578Srgrimes } else if (mp->m_next == NULL) { 9642477Sache return (EBADRPC); 965578Srgrimes } else if (siz > MHLEN) { 96659249Sphk panic("nfs S too big"); 96759249Sphk } else { 968578Srgrimes MGET(mp2, M_WAIT, MT_DATA); 9692477Sache mp2->m_next = mp->m_next; 970106490Smdodd mp->m_next = mp2; 971104445Smdodd mp->m_len -= left; 972578Srgrimes mp = mp2; 973578Srgrimes *cp2 = p = mtod(mp, caddr_t); 9742477Sache bcopy(*dposp, p, left); /* Copy what was left */ 975104445Smdodd siz2 = siz-left; 9762477Sache p += left; 9772477Sache mp2 = mp->m_next; 978578Srgrimes /* Loop around copying up the siz2 bytes */ 979104445Smdodd while (siz2 > 0) { 980104445Smdodd if (mp2 == NULL) 981578Srgrimes return (EBADRPC); 982104445Smdodd xfer = (siz2 > mp2->m_len) ? mp2->m_len : siz2; 983104445Smdodd if (xfer > 0) { 984106490Smdodd bcopy(mtod(mp2, caddr_t), p, xfer); 985106490Smdodd NFSMADV(mp2, xfer); 986578Srgrimes mp2->m_len -= xfer; 987578Srgrimes p += xfer; 988578Srgrimes siz2 -= xfer; 989578Srgrimes } 990578Srgrimes if (siz2 > 0) 9911197Srgrimes mp2 = mp2->m_next; 992104445Smdodd } 9932477Sache mp->m_len = siz; 9942477Sache *mdp = mp2; 995104445Smdodd *dposp = mtod(mp2, caddr_t); 996104445Smdodd } 997104445Smdodd return (0); 998106490Smdodd} 999106490Smdodd 10006604Sache/* 10016604Sache * Advance the position in the mbuf chain. 10026604Sache */ 1003104445Smdoddint 10046604Sachenfs_adv(mdp, dposp, offs, left) 10056604Sache struct mbuf **mdp; 10066604Sache caddr_t *dposp; 1007104445Smdodd int offs; 1008106490Smdodd int left; 1009106490Smdodd{ 1010104445Smdodd register struct mbuf *m; 10116604Sache register int s; 1012104445Smdodd 1013106490Smdodd m = *mdp; 10146604Sache s = left; 1015104445Smdodd while (s < offs) { 1016106490Smdodd offs -= s; 1017106490Smdodd m = m->m_next; 10186604Sache if (m == NULL) 10196604Sache return (EBADRPC); 1020106490Smdodd s = m->m_len; 10216604Sache } 1022106490Smdodd *mdp = m; 10236604Sache *dposp = mtod(m, caddr_t)+offs; 10246604Sache return (0); 10256604Sache} 1026104445Smdodd 10276604Sache/* 1028104445Smdodd * Copy a string into mbufs for the hard cases... 10296604Sache */ 1030104445Smdoddint 1031106490Smdoddnfsm_strtmbuf(mb, bpos, cp, siz) 1032106490Smdodd struct mbuf **mb; 1033106490Smdodd char **bpos; 1034104445Smdodd char *cp; 1035106490Smdodd long siz; 1036104445Smdodd{ 1037104445Smdodd register struct mbuf *m1 = 0, *m2; 1038106490Smdodd long left, xfer, len, tlen; 1039106490Smdodd u_long *tl; 10402477Sache int putsize; 10412477Sache 10422477Sache putsize = 1; 1043104445Smdodd m2 = *mb; 104413866Sache left = M_TRAILINGSPACE(m2); 104513866Sache if (left > 0) { 1046104445Smdodd tl = ((u_long *)(*bpos)); 1047106490Smdodd *tl++ = txdr_unsigned(siz); 1048106490Smdodd putsize = 0; 1049104445Smdodd left -= NFSX_UNSIGNED; 1050106490Smdodd m2->m_len += NFSX_UNSIGNED; 105113866Sache if (left > 0) { 105213866Sache bcopy(cp, (caddr_t) tl, left); 105313866Sache siz -= left; 1054104445Smdodd cp += left; 10552477Sache m2->m_len += left; 10562477Sache left = 0; 1057104445Smdodd } 1058106490Smdodd } 1059106490Smdodd /* Loop around adding mbufs */ 1060106490Smdodd while (siz > 0) { 10612477Sache MGET(m1, M_WAIT, MT_DATA); 10622477Sache if (siz > MLEN) 10632477Sache MCLGET(m1, M_WAIT); 1064104445Smdodd m1->m_len = NFSMSIZ(m1); 10652477Sache m2->m_next = m1; 10662477Sache m2 = m1; 1067106490Smdodd tl = mtod(m1, u_long *); 1068106490Smdodd tlen = 0; 1069106490Smdodd if (putsize) { 1070106490Smdodd *tl++ = txdr_unsigned(siz); 10712477Sache m1->m_len -= NFSX_UNSIGNED; 10722477Sache tlen = NFSX_UNSIGNED; 10732477Sache putsize = 0; 1074104445Smdodd } 1075578Srgrimes if (siz < m1->m_len) { 10762477Sache len = nfsm_rndup(siz); 1077578Srgrimes xfer = siz; 1078106490Smdodd if (xfer < len) 1079106490Smdodd *(tl+(xfer>>2)) = 0; 1080106490Smdodd } else { 1081104445Smdodd xfer = len = m1->m_len; 1082578Srgrimes } 1083578Srgrimes bcopy(cp, (caddr_t) tl, xfer); 1084106490Smdodd m1->m_len = len+tlen; 1085104445Smdodd siz -= xfer; 1086104445Smdodd cp += xfer; 1087104445Smdodd } 1088106490Smdodd *mb = m1; 1089106490Smdodd *bpos = mtod(m1, caddr_t)+m1->m_len; 10902477Sache return (0); 10912477Sache} 1092104445Smdodd 10932477Sache/* 10942477Sache * Called once to initialize data structures... 1095578Srgrimes */ 1096578Srgrimesint 1097106490Smdoddnfs_init(vfsp) 1098578Srgrimes struct vfsconf *vfsp; 1099578Srgrimes{ 11001197Srgrimes register int i; 1101104445Smdodd 1102578Srgrimes /* 11032477Sache * Check to see if major data structures haven't bloated. 1104578Srgrimes */ 1105104445Smdodd if (sizeof (struct nfsnode) > NFS_NODEALLOC) { 1106106490Smdodd printf("struct nfsnode bloated (> %dbytes)\n", NFS_NODEALLOC); 1107578Srgrimes printf("Try reducing NFS_SMALLFH\n"); 1108106490Smdodd } 1109106490Smdodd if (sizeof (struct nfsmount) > NFS_MNTALLOC) { 111013874Sache printf("struct nfsmount bloated (> %dbytes)\n", NFS_MNTALLOC); 111113874Sache printf("Try reducing NFS_MUIDHASHSIZ\n"); 111213874Sache } 1113578Srgrimes if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) { 1114106490Smdodd printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC); 1115578Srgrimes printf("Try reducing NFS_UIDHASHSIZ\n"); 1116578Srgrimes } 11171197Srgrimes if (sizeof (struct nfsuid) > NFS_UIDALLOC) { 1118104445Smdodd printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC); 1119578Srgrimes printf("Try unionizing the nu_nickname and nu_flag fields\n"); 1120578Srgrimes } 1121578Srgrimes nfs_mount_type = vfsp->vfc_typenum; 1122578Srgrimes nfsrtt.pos = 0; 1123578Srgrimes rpc_vers = txdr_unsigned(RPC_VER2); 1124578Srgrimes rpc_call = txdr_unsigned(RPC_CALL); 1125106490Smdodd rpc_reply = txdr_unsigned(RPC_REPLY); 1126106490Smdodd rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 1127578Srgrimes rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 1128106490Smdodd rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 1129104445Smdodd rpc_autherr = txdr_unsigned(RPC_AUTHERR); 1130578Srgrimes rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 1131104445Smdodd rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 1132106490Smdodd nfs_prog = txdr_unsigned(NFS_PROG); 1133578Srgrimes nqnfs_prog = txdr_unsigned(NQNFS_PROG); 1134104445Smdodd nfs_true = txdr_unsigned(TRUE); 1135106490Smdodd nfs_false = txdr_unsigned(FALSE); 11366665Sache nfs_xdrneg1 = txdr_unsigned(-1); 1137104445Smdodd nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 1138106490Smdodd if (nfs_ticks < 1) 1139578Srgrimes nfs_ticks = 1; 1140106490Smdodd /* Ensure async daemons disabled */ 1141104445Smdodd for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { 11422477Sache nfs_iodwant[i] = (struct proc *)0; 1143578Srgrimes nfs_iodmount[i] = (struct nfsmount *)0; 1144106490Smdodd } 1145578Srgrimes nfs_nhinit(); /* Init the nfsnode table */ 11466612Sache#ifndef NFS_NOSERVER 1147578Srgrimes nfsrv_init(0); /* Init server data structures */ 1148104445Smdodd nfsrv_initcache(); /* Init the server request cache */ 1149578Srgrimes#endif 11502477Sache 1151106490Smdodd /* 1152106490Smdodd * Initialize the nqnfs server stuff. 1153578Srgrimes */ 1154578Srgrimes if (nqnfsstarttime == 0) { 11551197Srgrimes nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 1156578Srgrimes + nqsrv_clockskew + nqsrv_writeslack; 1157578Srgrimes NQLOADNOVRAM(nqnfsstarttime); 1158104445Smdodd CIRCLEQ_INIT(&nqtimerhead); 1159106490Smdodd nqfhhashtbl = hashinit(NQLCHSZ, M_NQLEASE, &nqfhhash); 1160578Srgrimes } 11612477Sache 1162106490Smdodd /* 1163578Srgrimes * Initialize reply list and start timer 1164578Srgrimes */ 1165578Srgrimes TAILQ_INIT(&nfs_reqq); 1166106490Smdodd 1167106490Smdodd nfs_timer(0); 1168106490Smdodd 1169106490Smdodd 1170106490Smdodd /* 1171106490Smdodd * Set up lease_check and lease_updatetime so that other parts 1172106490Smdodd * of the system can call us, if we are loadable. 1173578Srgrimes */ 1174106490Smdodd#ifndef NFS_NOSERVER 11752477Sache default_vnodeop_p[VOFFSET(vop_lease)] = (vop_t *)nqnfs_vop_lease_check; 11762477Sache#endif 1177104445Smdodd lease_updatetime = nfs_lease_updatetime; 1178104445Smdodd vfsp->vfc_refcount++; /* make us non-unloadable */ 1179106490Smdodd sysent[SYS_nfssvc].sy_narg = 2; 1180106490Smdodd sysent[SYS_nfssvc].sy_call = (sy_call_t *)nfssvc; 1181106490Smdodd#ifndef NFS_NOSERVER 1182106490Smdodd sysent[SYS_getfh].sy_narg = 2; 1183106490Smdodd sysent[SYS_getfh].sy_call = (sy_call_t *)getfh; 11842477Sache#endif 11852477Sache 1186106490Smdodd return (0); 1187578Srgrimes} 1188106490Smdodd 1189578Srgrimes/* 1190578Srgrimes * Attribute cache routines. 119131016Sphk * nfs_loadattrcache() - loads or updates the cache contents from attributes 11921197Srgrimes * that are on the mbuf list 1193104445Smdodd * nfs_getattrcache() - returns valid attributes if found in cache, returns 119425460Sjoerg * error otherwise 119525460Sjoerg */ 119625460Sjoerg 119725460Sjoerg/* 119825460Sjoerg * Load the attribute cache (that lives in the nfsnode entry) with 119925460Sjoerg * the values on the mbuf list and 1200106490Smdodd * Iff vap not NULL 120125460Sjoerg * copy the attributes to *vaper 120225460Sjoerg */ 1203104445Smdoddint 1204106490Smdoddnfs_loadattrcache(vpp, mdp, dposp, vaper) 120525460Sjoerg struct vnode **vpp; 120625460Sjoerg struct mbuf **mdp; 120725460Sjoerg caddr_t *dposp; 120825460Sjoerg struct vattr *vaper; 120925460Sjoerg{ 121025460Sjoerg register struct vnode *vp = *vpp; 121125460Sjoerg register struct vattr *vap; 121225460Sjoerg register struct nfs_fattr *fp; 1213106490Smdodd register struct nfsnode *np; 121425460Sjoerg register long t1; 121525460Sjoerg caddr_t cp2; 1216104445Smdodd int error = 0, rdev; 1217106490Smdodd struct mbuf *md; 121825460Sjoerg enum vtype vtyp; 121925460Sjoerg u_short vmode; 1220106490Smdodd struct timespec mtime; 1221106490Smdodd struct vnode *nvp; 122225460Sjoerg int v3 = NFS_ISV3(vp); 1223106490Smdodd 1224106490Smdodd md = *mdp; 122525460Sjoerg t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 1226106490Smdodd if (error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2)) 1227106490Smdodd return (error); 122825460Sjoerg fp = (struct nfs_fattr *)cp2; 122925460Sjoerg if (v3) { 123025460Sjoerg vtyp = nfsv3tov_type(fp->fa_type); 1231106490Smdodd vmode = fxdr_unsigned(u_short, fp->fa_mode); 1232106490Smdodd rdev = makedev(fxdr_unsigned(int, fp->fa3_rdev.specdata1), 1233106490Smdodd fxdr_unsigned(int, fp->fa3_rdev.specdata2)); 123425460Sjoerg fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 123525460Sjoerg } else { 1236106490Smdodd vtyp = nfsv2tov_type(fp->fa_type); 123725460Sjoerg vmode = fxdr_unsigned(u_short, fp->fa_mode); 123825460Sjoerg /* 1239106490Smdodd * XXX 124025460Sjoerg * 124131016Sphk * The duplicate information returned in fa_type and fa_mode 124225460Sjoerg * is an ambiguity in the NFS version 2 protocol. 124325460Sjoerg * 1244104445Smdodd * VREG should be taken literally as a regular file. If a 1245578Srgrimes * server intents to return some type information differently 12462477Sache * in the upper bits of the mode field (e.g. for sockets, or 1247578Srgrimes * FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we 124813743Sache * leave the examination of the mode bits even in the VREG 1249578Srgrimes * case to avoid breakage for bogus servers, but we make sure 125013743Sache * that there are actually type bits set in the upper part of 125113743Sache * fa_mode (and failing that, trust the va_type field). 125246571Speter * 125346571Speter * NFSv3 cleared the issue, and requires fa_mode to not 12542477Sache * contain any type information (while also introduing sockets 1255106490Smdodd * and FIFOs for fa_type). 1256578Srgrimes */ 1257578Srgrimes if (vtyp == VNON || (vtyp == VREG && (vmode & S_IFMT) != 0)) 1258104445Smdodd vtyp = IFTOVT(vmode); 1259106490Smdodd rdev = fxdr_unsigned(long, fp->fa2_rdev); 1260578Srgrimes fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 126113732Sache 126213732Sache /* 126313732Sache * Really ugly NFSv2 kludge. 126413732Sache */ 126513732Sache if (vtyp == VCHR && rdev == 0xffffffff) 126613732Sache vtyp = VFIFO; 126713732Sache } 1268106490Smdodd 126913732Sache /* 127013743Sache * If v_type == VNON it is a new node, so fill in the v_type, 127113743Sache * n_mtime fields. Check to see if it represents a special 127213743Sache * device, and if so, check for a possible alias. Once the 127313743Sache * correct vnode has been obtained, fill in the rest of the 127413743Sache * information. 1275106490Smdodd */ 127613743Sache np = VTONFS(vp); 127713732Sache if (vp->v_type != vtyp) { 1278104445Smdodd vp->v_type = vtyp; 1279106490Smdodd if (vp->v_type == VFIFO) { 128013732Sache vp->v_op = fifo_nfsv2nodeop_p; 128113732Sache } 128213732Sache if (vp->v_type == VCHR || vp->v_type == VBLK) { 1283106490Smdodd vp->v_op = spec_nfsv2nodeop_p; 128413732Sache nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 1285106490Smdodd if (nvp) { 1286106490Smdodd /* 128713732Sache * Discard unneeded vnode, but save its nfsnode. 1288106490Smdodd * Since the nfsnode does not have a lock, its 1289106490Smdodd * vnode lock has to be carried over. 129013732Sache */ 129113732Sache nvp->v_vnlock = vp->v_vnlock; 129213732Sache vp->v_vnlock = NULL; 1293106490Smdodd nvp->v_data = vp->v_data; 1294106490Smdodd vp->v_data = NULL; 1295106490Smdodd vp->v_op = spec_vnodeop_p; 129613732Sache vrele(vp); 129713732Sache vgone(vp); 1298106490Smdodd /* 129913732Sache * Reinitialize aliased node. 13002477Sache */ 13012477Sache np->n_vnode = nvp; 130213732Sache *vpp = vp = nvp; 1303578Srgrimes } 1304578Srgrimes } 1305578Srgrimes np->n_mtime = mtime.tv_sec; 130613732Sache } 1307578Srgrimes vap = &np->n_vattr; 1308578Srgrimes vap->va_type = vtyp; 13091197Srgrimes vap->va_mode = (vmode & 07777); 1310104445Smdodd vap->va_rdev = (dev_t)rdev; 1311578Srgrimes vap->va_mtime = mtime; 1312578Srgrimes vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 13136604Sache if (v3) { 1314106490Smdodd vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1315106490Smdodd vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1316106490Smdodd vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1317106490Smdodd fxdr_hyper(&fp->fa3_size, &vap->va_size); 1318104445Smdodd vap->va_blocksize = NFS_FABLKSIZE; 1319104445Smdodd fxdr_hyper(&fp->fa3_used, &vap->va_bytes); 1320106490Smdodd vap->va_fileid = fxdr_unsigned(int, fp->fa3_fileid.nfsuquad[1]); 1321106490Smdodd fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 13226604Sache fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 1323106490Smdodd vap->va_flags = 0; 1324104445Smdodd vap->va_filerev = 0; 1325106490Smdodd } else { 1326106490Smdodd vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1327106490Smdodd vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1328578Srgrimes vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1329578Srgrimes vap->va_size = fxdr_unsigned(u_long, fp->fa2_size); 13301197Srgrimes vap->va_blocksize = fxdr_unsigned(long, fp->fa2_blocksize); 1331104445Smdodd vap->va_bytes = fxdr_unsigned(long, fp->fa2_blocks) * NFS_FABLKSIZE; 1332578Srgrimes vap->va_fileid = fxdr_unsigned(long, fp->fa2_fileid); 1333578Srgrimes fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 1334104445Smdodd vap->va_flags = 0; 1335106490Smdodd vap->va_ctime.tv_sec = fxdr_unsigned(long, fp->fa2_ctime.nfsv2_sec); 1336104445Smdodd vap->va_ctime.tv_nsec = 0; 1337106490Smdodd vap->va_gen = fxdr_unsigned(u_long, fp->fa2_ctime.nfsv2_usec); 1338106490Smdodd vap->va_filerev = 0; 1339104445Smdodd } 1340104445Smdodd if (vap->va_size != np->n_size) { 1341104445Smdodd if (vap->va_type == VREG) { 1342104445Smdodd if (np->n_flag & NMODIFIED) { 1343104445Smdodd if (vap->va_size < np->n_size) 1344104445Smdodd vap->va_size = np->n_size; 1345104445Smdodd else 1346104445Smdodd np->n_size = vap->va_size; 1347104445Smdodd } else 1348104445Smdodd np->n_size = vap->va_size; 1349104445Smdodd vnode_pager_setsize(vp, (u_long)np->n_size); 13501197Srgrimes } else 1351106490Smdodd np->n_size = vap->va_size; 1352578Srgrimes } 1353578Srgrimes np->n_attrstamp = time_second; 13541197Srgrimes if (vaper != NULL) { 1355141031Ssobomax bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 1356578Srgrimes if (np->n_flag & NCHG) { 1357578Srgrimes if (np->n_flag & NACC) 1358578Srgrimes vaper->va_atime = np->n_atim; 135913770Sache if (np->n_flag & NUPD) 1360578Srgrimes vaper->va_mtime = np->n_mtim; 1361106490Smdodd } 1362104445Smdodd } 1363104445Smdodd return (0); 1364104445Smdodd} 13652477Sache 1366104445Smdodd#ifdef NFS_ACDEBUG 1367104445Smdodd#include <sys/sysctl.h> 1368106490Smdoddstatic int nfs_acdebug; 13692477SacheSYSCTL_INT(_vfs_nfs, OID_AUTO, acdebug, CTLFLAG_RW, &nfs_acdebug, 0, ""); 1370104445Smdodd#endif 1371104445Smdodd 1372106490Smdodd/* 13732477Sache * Check the time stamp 1374104445Smdodd * If the cache is valid, copy contents to *vap and return 0 1375106490Smdodd * otherwise return an error 13762477Sache */ 1377104445Smdoddint 1378106490Smdoddnfs_getattrcache(vp, vaper) 1379578Srgrimes register struct vnode *vp; 1380106490Smdodd struct vattr *vaper; 1381104445Smdodd{ 138213886Sache register struct nfsnode *np; 1383104445Smdodd register struct vattr *vap; 138413886Sache struct nfsmount *nmp; 138513886Sache int timeo; 138613886Sache 138713732Sache np = VTONFS(vp); 138813886Sache vap = &np->n_vattr; 138913886Sache nmp = VFSTONFS(vp->v_mount); 139013886Sache /* XXX n_mtime doesn't seem to be updated on a miss-and-reload */ 139113886Sache timeo = (time_second - np->n_mtime) / 10; 139213886Sache 139313886Sache#ifdef NFS_ACDEBUG 1394104445Smdodd if (nfs_acdebug>1) 139513886Sache printf("nfs_getattrcache: initial timeo = %d\n", timeo); 139613886Sache#endif 139713886Sache 139813886Sache if (vap->va_type == VDIR) { 139913886Sache if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acdirmin) 140013886Sache timeo = nmp->nm_acdirmin; 140113886Sache else if (timeo > nmp->nm_acdirmax) 140213886Sache timeo = nmp->nm_acdirmax; 140313886Sache } else { 140413886Sache if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acregmin) 140513886Sache timeo = nmp->nm_acregmin; 140613886Sache else if (timeo > nmp->nm_acregmax) 140713886Sache timeo = nmp->nm_acregmax; 140813886Sache } 140913886Sache 141013886Sache#ifdef NFS_ACDEBUG 141113886Sache if (nfs_acdebug > 2) 141213886Sache printf("acregmin %d; acregmax %d; acdirmin %d; acdirmax %d\n", 141313886Sache nmp->nm_acregmin, nmp->nm_acregmax, 141413886Sache nmp->nm_acdirmin, nmp->nm_acdirmax); 141513886Sache 141613886Sache if (nfs_acdebug) 141713886Sache printf("nfs_getattrcache: age = %d; final timeo = %d\n",r 141813732Sache (time_second - np->n_attrstamp), timeo); 14196665Sache#endif 1420578Srgrimes 1421141031Ssobomax if ((time_second - np->n_attrstamp) >= timeo) { 1422141031Ssobomax nfsstats.attrcache_misses++; 1423141031Ssobomax return (ENOENT); 1424141061Smaxim } 1425578Srgrimes nfsstats.attrcache_hits++; 1426578Srgrimes if (vap->va_size != np->n_size) { 14271197Srgrimes if (vap->va_type == VREG) { 1428104445Smdodd if (np->n_flag & NMODIFIED) { 14292477Sache if (vap->va_size < np->n_size) 14302477Sache vap->va_size = np->n_size; 14312477Sache else 1432106490Smdodd np->n_size = vap->va_size; 1433104445Smdodd } else 143413833Sache np->n_size = vap->va_size; 143513833Sache vnode_pager_setsize(vp, (u_long)np->n_size); 143613833Sache } else 143713833Sache np->n_size = vap->va_size; 143813833Sache } 143913833Sache bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr)); 1440106490Smdodd if (np->n_flag & NCHG) { 1441106490Smdodd if (np->n_flag & NACC) 1442106490Smdodd vaper->va_atime = np->n_atim; 1443106490Smdodd if (np->n_flag & NUPD) 144413833Sache vaper->va_mtime = np->n_mtim; 144513833Sache } 144613833Sache return (0); 144713833Sache} 144813833Sache 144913833Sache#ifndef NFS_NOSERVER 145013833Sache/* 145113833Sache * Set up nameidata for a lookup() call and do it. 1452104445Smdodd * 1453106490Smdodd * If pubflag is set, this call is done for a lookup operation on the 14542477Sache * public filehandle. In that case we allow crossing mountpoints and 1455104445Smdodd * absolute pathnames. However, the caller is expected to check that 14562477Sache * the lookup result is within the public fs, and deny access if 14572477Sache * it is not. 14582477Sache */ 1459104445Smdoddint 1460578Srgrimesnfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag, pubflag) 1461578Srgrimes register struct nameidata *ndp; 1462578Srgrimes fhandle_t *fhp; 1463578Srgrimes int len; 14644390Sache struct nfssvc_sock *slp; 1465578Srgrimes struct sockaddr *nam; 1466104445Smdodd struct mbuf **mdp; 1467106490Smdodd caddr_t *dposp; 1468578Srgrimes struct vnode **retdirp; 1469106490Smdodd struct proc *p; 1470104445Smdodd int kerbflag, pubflag; 14712477Sache{ 14722477Sache register int i, rem; 1473106490Smdodd register struct mbuf *md; 1474106490Smdodd register char *fromcp, *tocp, *cp; 14752477Sache struct iovec aiov; 1476106490Smdodd struct uio auio; 1477106490Smdodd struct vnode *dp; 1478106490Smdodd int error, rdonly, linklen; 1479578Srgrimes struct componentname *cnp = &ndp->ni_cnd; 14804390Sache 1481106490Smdodd *retdirp = (struct vnode *)0; 1482106490Smdodd cnp->cn_pnbuf = zalloc(namei_zone); 14834390Sache 1484578Srgrimes /* 1485104445Smdodd * Copy the name from the mbuf list to ndp->ni_pnbuf 1486106490Smdodd * and set the various ndp fields appropriately. 148713833Sache */ 1488104445Smdodd fromcp = *dposp; 1489578Srgrimes tocp = cnp->cn_pnbuf; 1490578Srgrimes md = *mdp; 14911197Srgrimes rem = mtod(md, caddr_t) + md->m_len - fromcp; 1492104445Smdodd cnp->cn_hash = 0; 149313833Sache for (i = 0; i < len; i++) { 149413833Sache while (rem == 0) { 149513833Sache md = md->m_next; 1496106490Smdodd if (md == NULL) { 1497104445Smdodd error = EBADRPC; 1498104445Smdodd goto out; 149913833Sache } 1500106490Smdodd fromcp = mtod(md, caddr_t); 150113833Sache rem = md->m_len; 1502106490Smdodd } 1503106490Smdodd if (*fromcp == '\0' || (!pubflag && *fromcp == '/')) { 150413833Sache error = EACCES; 150513833Sache goto out; 150613833Sache } 150713833Sache cnp->cn_hash += (unsigned char)*fromcp; 1508104445Smdodd *tocp++ = *fromcp++; 1509106490Smdodd rem--; 151013833Sache } 1511104445Smdodd *tocp = '\0'; 151213833Sache *mdp = md; 151313833Sache *dposp = fromcp; 151413833Sache len = nfsm_rndup(len)-len; 1515104445Smdodd if (len > 0) { 1516578Srgrimes if (rem >= len) 15172477Sache *dposp += len; 1518578Srgrimes else if ((error = nfs_adv(mdp, dposp, len, rem)) != 0) 1519106490Smdodd goto out; 15201197Srgrimes } 15212477Sache 1522106719Smdodd /* 1523104445Smdodd * Extract and set starting directory. 1524104445Smdodd */ 1525104445Smdodd error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 1526104445Smdodd nam, &rdonly, kerbflag, pubflag); 1527104445Smdodd if (error) 1528104445Smdodd goto out; 1529104445Smdodd if (dp->v_type != VDIR) { 1530106719Smdodd vrele(dp); 15312477Sache error = ENOTDIR; 1532104445Smdodd goto out; 15332477Sache } 15342477Sache 15352477Sache if (rdonly) 15362477Sache cnp->cn_flags |= RDONLY; 15372477Sache 1538578Srgrimes *retdirp = dp; 1539578Srgrimes 15402477Sache if (pubflag) { 1541104445Smdodd /* 1542106490Smdodd * Oh joy. For WebNFS, handle those pesky '%' escapes, 15431197Srgrimes * and the 'native path' indicator. 1544106490Smdodd */ 1545104445Smdodd cp = zalloc(namei_zone); 1546104445Smdodd fromcp = cnp->cn_pnbuf; 15472477Sache tocp = cp; 1548106490Smdodd if ((unsigned char)*fromcp >= WEBNFS_SPECCHAR_START) { 1549106490Smdodd switch ((unsigned char)*fromcp) { 1550106490Smdodd case WEBNFS_NATIVE_CHAR: 1551578Srgrimes /* 1552578Srgrimes * 'Native' path for us is the same 15531197Srgrimes * as a path according to the NFS spec, 1554104445Smdodd * just skip the escape char. 1555578Srgrimes */ 1556578Srgrimes fromcp++; 1557578Srgrimes break; 1558578Srgrimes /* 1559578Srgrimes * More may be added in the future, range 0x80-0xff 1560106490Smdodd */ 1561106490Smdodd default: 1562106490Smdodd error = EIO; 1563104445Smdodd zfree(namei_zone, cp); 1564104445Smdodd goto out; 1565106490Smdodd } 1566106490Smdodd } 1567578Srgrimes /* 1568578Srgrimes * Translate the '%' escapes, URL-style. 1569578Srgrimes */ 1570104445Smdodd while (*fromcp != '\0') { 1571106490Smdodd if (*fromcp == WEBNFS_ESC_CHAR) { 1572578Srgrimes if (fromcp[1] != '\0' && fromcp[2] != '\0') { 1573578Srgrimes fromcp++; 1574106490Smdodd *tocp++ = HEXSTRTOI(fromcp); 1575106490Smdodd fromcp += 2; 1576106490Smdodd continue; 1577578Srgrimes } else { 1578578Srgrimes error = ENOENT; 1579104445Smdodd zfree(namei_zone, cp); 1580106490Smdodd goto out; 1581578Srgrimes } 1582578Srgrimes } else 1583106490Smdodd *tocp++ = *fromcp++; 1584106490Smdodd } 1585578Srgrimes *tocp = '\0'; 1586578Srgrimes zfree(namei_zone, cnp->cn_pnbuf); 15871197Srgrimes cnp->cn_pnbuf = cp; 1588104445Smdodd } 1589578Srgrimes 1590578Srgrimes ndp->ni_pathlen = (tocp - cnp->cn_pnbuf) + 1; 1591106490Smdodd ndp->ni_segflg = UIO_SYSSPACE; 1592106490Smdodd 1593106490Smdodd if (pubflag) { 1594578Srgrimes ndp->ni_rootdir = rootvnode; 1595 ndp->ni_loopcnt = 0; 1596 if (cnp->cn_pnbuf[0] == '/') 1597 dp = rootvnode; 1598 } else { 1599 cnp->cn_flags |= NOCROSSMOUNT; 1600 } 1601 1602 cnp->cn_proc = p; 1603 VREF(dp); 1604 1605 for (;;) { 1606 cnp->cn_nameptr = cnp->cn_pnbuf; 1607 ndp->ni_startdir = dp; 1608 /* 1609 * And call lookup() to do the real work 1610 */ 1611 error = lookup(ndp); 1612 if (error) 1613 break; 1614 /* 1615 * Check for encountering a symbolic link 1616 */ 1617 if ((cnp->cn_flags & ISSYMLINK) == 0) { 1618 nfsrv_object_create(ndp->ni_vp); 1619 if (cnp->cn_flags & (SAVENAME | SAVESTART)) { 1620 cnp->cn_flags |= HASBUF; 1621 return (0); 1622 } 1623 break; 1624 } else { 1625 if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 1626 VOP_UNLOCK(ndp->ni_dvp, 0, p); 1627 if (!pubflag) { 1628 vrele(ndp->ni_dvp); 1629 vput(ndp->ni_vp); 1630 ndp->ni_vp = NULL; 1631 error = EINVAL; 1632 break; 1633 } 1634 1635 if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 1636 error = ELOOP; 1637 break; 1638 } 1639 if (ndp->ni_pathlen > 1) 1640 cp = zalloc(namei_zone); 1641 else 1642 cp = cnp->cn_pnbuf; 1643 aiov.iov_base = cp; 1644 aiov.iov_len = MAXPATHLEN; 1645 auio.uio_iov = &aiov; 1646 auio.uio_iovcnt = 1; 1647 auio.uio_offset = 0; 1648 auio.uio_rw = UIO_READ; 1649 auio.uio_segflg = UIO_SYSSPACE; 1650 auio.uio_procp = (struct proc *)0; 1651 auio.uio_resid = MAXPATHLEN; 1652 error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 1653 if (error) { 1654 badlink: 1655 if (ndp->ni_pathlen > 1) 1656 zfree(namei_zone, cp); 1657 break; 1658 } 1659 linklen = MAXPATHLEN - auio.uio_resid; 1660 if (linklen == 0) { 1661 error = ENOENT; 1662 goto badlink; 1663 } 1664 if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 1665 error = ENAMETOOLONG; 1666 goto badlink; 1667 } 1668 if (ndp->ni_pathlen > 1) { 1669 bcopy(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 1670 zfree(namei_zone, cnp->cn_pnbuf); 1671 cnp->cn_pnbuf = cp; 1672 } else 1673 cnp->cn_pnbuf[linklen] = '\0'; 1674 ndp->ni_pathlen += linklen; 1675 vput(ndp->ni_vp); 1676 dp = ndp->ni_dvp; 1677 /* 1678 * Check if root directory should replace current directory. 1679 */ 1680 if (cnp->cn_pnbuf[0] == '/') { 1681 vrele(dp); 1682 dp = ndp->ni_rootdir; 1683 VREF(dp); 1684 } 1685 } 1686 } 1687out: 1688 zfree(namei_zone, cnp->cn_pnbuf); 1689 return (error); 1690} 1691 1692/* 1693 * A fiddled version of m_adj() that ensures null fill to a long 1694 * boundary and only trims off the back end 1695 */ 1696void 1697nfsm_adj(mp, len, nul) 1698 struct mbuf *mp; 1699 register int len; 1700 int nul; 1701{ 1702 register struct mbuf *m; 1703 register int count, i; 1704 register char *cp; 1705 1706 /* 1707 * Trim from tail. Scan the mbuf chain, 1708 * calculating its length and finding the last mbuf. 1709 * If the adjustment only affects this mbuf, then just 1710 * adjust and return. Otherwise, rescan and truncate 1711 * after the remaining size. 1712 */ 1713 count = 0; 1714 m = mp; 1715 for (;;) { 1716 count += m->m_len; 1717 if (m->m_next == (struct mbuf *)0) 1718 break; 1719 m = m->m_next; 1720 } 1721 if (m->m_len > len) { 1722 m->m_len -= len; 1723 if (nul > 0) { 1724 cp = mtod(m, caddr_t)+m->m_len-nul; 1725 for (i = 0; i < nul; i++) 1726 *cp++ = '\0'; 1727 } 1728 return; 1729 } 1730 count -= len; 1731 if (count < 0) 1732 count = 0; 1733 /* 1734 * Correct length for chain is "count". 1735 * Find the mbuf with last data, adjust its length, 1736 * and toss data from remaining mbufs on chain. 1737 */ 1738 for (m = mp; m; m = m->m_next) { 1739 if (m->m_len >= count) { 1740 m->m_len = count; 1741 if (nul > 0) { 1742 cp = mtod(m, caddr_t)+m->m_len-nul; 1743 for (i = 0; i < nul; i++) 1744 *cp++ = '\0'; 1745 } 1746 break; 1747 } 1748 count -= m->m_len; 1749 } 1750 for (m = m->m_next;m;m = m->m_next) 1751 m->m_len = 0; 1752} 1753 1754/* 1755 * Make these functions instead of macros, so that the kernel text size 1756 * doesn't get too big... 1757 */ 1758void 1759nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 1760 struct nfsrv_descript *nfsd; 1761 int before_ret; 1762 register struct vattr *before_vap; 1763 int after_ret; 1764 struct vattr *after_vap; 1765 struct mbuf **mbp; 1766 char **bposp; 1767{ 1768 register struct mbuf *mb = *mbp, *mb2; 1769 register char *bpos = *bposp; 1770 register u_long *tl; 1771 1772 if (before_ret) { 1773 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 1774 *tl = nfs_false; 1775 } else { 1776 nfsm_build(tl, u_long *, 7 * NFSX_UNSIGNED); 1777 *tl++ = nfs_true; 1778 txdr_hyper(&(before_vap->va_size), tl); 1779 tl += 2; 1780 txdr_nfsv3time(&(before_vap->va_mtime), tl); 1781 tl += 2; 1782 txdr_nfsv3time(&(before_vap->va_ctime), tl); 1783 } 1784 *bposp = bpos; 1785 *mbp = mb; 1786 nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 1787} 1788 1789void 1790nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 1791 struct nfsrv_descript *nfsd; 1792 int after_ret; 1793 struct vattr *after_vap; 1794 struct mbuf **mbp; 1795 char **bposp; 1796{ 1797 register struct mbuf *mb = *mbp, *mb2; 1798 register char *bpos = *bposp; 1799 register u_long *tl; 1800 register struct nfs_fattr *fp; 1801 1802 if (after_ret) { 1803 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 1804 *tl = nfs_false; 1805 } else { 1806 nfsm_build(tl, u_long *, NFSX_UNSIGNED + NFSX_V3FATTR); 1807 *tl++ = nfs_true; 1808 fp = (struct nfs_fattr *)tl; 1809 nfsm_srvfattr(nfsd, after_vap, fp); 1810 } 1811 *mbp = mb; 1812 *bposp = bpos; 1813} 1814 1815void 1816nfsm_srvfattr(nfsd, vap, fp) 1817 register struct nfsrv_descript *nfsd; 1818 register struct vattr *vap; 1819 register struct nfs_fattr *fp; 1820{ 1821 1822 fp->fa_nlink = txdr_unsigned(vap->va_nlink); 1823 fp->fa_uid = txdr_unsigned(vap->va_uid); 1824 fp->fa_gid = txdr_unsigned(vap->va_gid); 1825 if (nfsd->nd_flag & ND_NFSV3) { 1826 fp->fa_type = vtonfsv3_type(vap->va_type); 1827 fp->fa_mode = vtonfsv3_mode(vap->va_mode); 1828 txdr_hyper(&vap->va_size, &fp->fa3_size); 1829 txdr_hyper(&vap->va_bytes, &fp->fa3_used); 1830 fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 1831 fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 1832 fp->fa3_fsid.nfsuquad[0] = 0; 1833 fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 1834 fp->fa3_fileid.nfsuquad[0] = 0; 1835 fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid); 1836 txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 1837 txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 1838 txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 1839 } else { 1840 fp->fa_type = vtonfsv2_type(vap->va_type); 1841 fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 1842 fp->fa2_size = txdr_unsigned(vap->va_size); 1843 fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 1844 if (vap->va_type == VFIFO) 1845 fp->fa2_rdev = 0xffffffff; 1846 else 1847 fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 1848 fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 1849 fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 1850 fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 1851 txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 1852 txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 1853 txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 1854 } 1855} 1856 1857/* 1858 * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 1859 * - look up fsid in mount list (if not found ret error) 1860 * - get vp and export rights by calling VFS_FHTOVP() 1861 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 1862 * - if not lockflag unlock it with VOP_UNLOCK() 1863 */ 1864int 1865nfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag, pubflag) 1866 fhandle_t *fhp; 1867 int lockflag; 1868 struct vnode **vpp; 1869 struct ucred *cred; 1870 struct nfssvc_sock *slp; 1871 struct sockaddr *nam; 1872 int *rdonlyp; 1873 int kerbflag; 1874 int pubflag; 1875{ 1876 struct proc *p = curproc; /* XXX */ 1877 register struct mount *mp; 1878 register int i; 1879 struct ucred *credanon; 1880 int error, exflags; 1881 1882 *vpp = (struct vnode *)0; 1883 1884 if (nfs_ispublicfh(fhp)) { 1885 if (!pubflag || !nfs_pub.np_valid) 1886 return (ESTALE); 1887 fhp = &nfs_pub.np_handle; 1888 } 1889 1890 mp = vfs_getvfs(&fhp->fh_fsid); 1891 if (!mp) 1892 return (ESTALE); 1893 error = VFS_FHTOVP(mp, &fhp->fh_fid, nam, vpp, &exflags, &credanon); 1894 if (error) 1895 return (error); 1896 /* 1897 * Check/setup credentials. 1898 */ 1899 if (exflags & MNT_EXKERB) { 1900 if (!kerbflag) { 1901 vput(*vpp); 1902 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1903 } 1904 } else if (kerbflag) { 1905 vput(*vpp); 1906 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1907 } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) { 1908 cred->cr_uid = credanon->cr_uid; 1909 for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 1910 cred->cr_groups[i] = credanon->cr_groups[i]; 1911 cred->cr_ngroups = i; 1912 } 1913 if (exflags & MNT_EXRDONLY) 1914 *rdonlyp = 1; 1915 else 1916 *rdonlyp = 0; 1917 1918 nfsrv_object_create(*vpp); 1919 1920 if (!lockflag) 1921 VOP_UNLOCK(*vpp, 0, p); 1922 return (0); 1923} 1924 1925 1926/* 1927 * WebNFS: check if a filehandle is a public filehandle. For v3, this 1928 * means a length of 0, for v2 it means all zeroes. nfsm_srvmtofh has 1929 * transformed this to all zeroes in both cases, so check for it. 1930 */ 1931int 1932nfs_ispublicfh(fhp) 1933 fhandle_t *fhp; 1934{ 1935 char *cp = (char *)fhp; 1936 int i; 1937 1938 for (i = 0; i < NFSX_V3FH; i++) 1939 if (*cp++ != 0) 1940 return (FALSE); 1941 return (TRUE); 1942} 1943 1944#endif /* NFS_NOSERVER */ 1945/* 1946 * This function compares two net addresses by family and returns TRUE 1947 * if they are the same host. 1948 * If there is any doubt, return FALSE. 1949 * The AF_INET family is handled as a special case so that address mbufs 1950 * don't need to be saved to store "struct in_addr", which is only 4 bytes. 1951 */ 1952int 1953netaddr_match(family, haddr, nam) 1954 int family; 1955 union nethostaddr *haddr; 1956 struct sockaddr *nam; 1957{ 1958 register struct sockaddr_in *inetaddr; 1959 1960 switch (family) { 1961 case AF_INET: 1962 inetaddr = (struct sockaddr_in *)nam; 1963 if (inetaddr->sin_family == AF_INET && 1964 inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 1965 return (1); 1966 break; 1967#ifdef ISO 1968 case AF_ISO: 1969 { 1970 register struct sockaddr_iso *isoaddr1, *isoaddr2; 1971 1972 isoaddr1 = (struct sockaddr_iso *)nam; 1973 isoaddr2 = (struct sockaddr_iso *)haddr->had_nam; 1974 if (isoaddr1->siso_family == AF_ISO && 1975 isoaddr1->siso_nlen > 0 && 1976 isoaddr1->siso_nlen == isoaddr2->siso_nlen && 1977 SAME_ISOADDR(isoaddr1, isoaddr2)) 1978 return (1); 1979 break; 1980 } 1981#endif /* ISO */ 1982 default: 1983 break; 1984 }; 1985 return (0); 1986} 1987 1988static nfsuint64 nfs_nullcookie = { 0, 0 }; 1989/* 1990 * This function finds the directory cookie that corresponds to the 1991 * logical byte offset given. 1992 */ 1993nfsuint64 * 1994nfs_getcookie(np, off, add) 1995 register struct nfsnode *np; 1996 off_t off; 1997 int add; 1998{ 1999 register struct nfsdmap *dp, *dp2; 2000 register int pos; 2001 2002 pos = off / NFS_DIRBLKSIZ; 2003 if (pos == 0) { 2004#ifdef DIAGNOSTIC 2005 if (add) 2006 panic("nfs getcookie add at 0"); 2007#endif 2008 return (&nfs_nullcookie); 2009 } 2010 pos--; 2011 dp = np->n_cookies.lh_first; 2012 if (!dp) { 2013 if (add) { 2014 MALLOC(dp, struct nfsdmap *, sizeof (struct nfsdmap), 2015 M_NFSDIROFF, M_WAITOK); 2016 dp->ndm_eocookie = 0; 2017 LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list); 2018 } else 2019 return ((nfsuint64 *)0); 2020 } 2021 while (pos >= NFSNUMCOOKIES) { 2022 pos -= NFSNUMCOOKIES; 2023 if (dp->ndm_list.le_next) { 2024 if (!add && dp->ndm_eocookie < NFSNUMCOOKIES && 2025 pos >= dp->ndm_eocookie) 2026 return ((nfsuint64 *)0); 2027 dp = dp->ndm_list.le_next; 2028 } else if (add) { 2029 MALLOC(dp2, struct nfsdmap *, sizeof (struct nfsdmap), 2030 M_NFSDIROFF, M_WAITOK); 2031 dp2->ndm_eocookie = 0; 2032 LIST_INSERT_AFTER(dp, dp2, ndm_list); 2033 dp = dp2; 2034 } else 2035 return ((nfsuint64 *)0); 2036 } 2037 if (pos >= dp->ndm_eocookie) { 2038 if (add) 2039 dp->ndm_eocookie = pos + 1; 2040 else 2041 return ((nfsuint64 *)0); 2042 } 2043 return (&dp->ndm_cookies[pos]); 2044} 2045 2046/* 2047 * Invalidate cached directory information, except for the actual directory 2048 * blocks (which are invalidated separately). 2049 * Done mainly to avoid the use of stale offset cookies. 2050 */ 2051void 2052nfs_invaldir(vp) 2053 register struct vnode *vp; 2054{ 2055 register struct nfsnode *np = VTONFS(vp); 2056 2057#ifdef DIAGNOSTIC 2058 if (vp->v_type != VDIR) 2059 panic("nfs: invaldir not dir"); 2060#endif 2061 np->n_direofoffset = 0; 2062 np->n_cookieverf.nfsuquad[0] = 0; 2063 np->n_cookieverf.nfsuquad[1] = 0; 2064 if (np->n_cookies.lh_first) 2065 np->n_cookies.lh_first->ndm_eocookie = 0; 2066} 2067 2068/* 2069 * The write verifier has changed (probably due to a server reboot), so all 2070 * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 2071 * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 2072 * flag. Once done the new write verifier can be set for the mount point. 2073 */ 2074void 2075nfs_clearcommit(mp) 2076 struct mount *mp; 2077{ 2078 register struct vnode *vp, *nvp; 2079 register struct buf *bp, *nbp; 2080 int s; 2081 2082 s = splbio(); 2083loop: 2084 for (vp = mp->mnt_vnodelist.lh_first; vp; vp = nvp) { 2085 if (vp->v_mount != mp) /* Paranoia */ 2086 goto loop; 2087 nvp = vp->v_mntvnodes.le_next; 2088 for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 2089 nbp = bp->b_vnbufs.le_next; 2090 if ((bp->b_flags & (B_BUSY | B_DELWRI | B_NEEDCOMMIT)) 2091 == (B_DELWRI | B_NEEDCOMMIT)) 2092 bp->b_flags &= ~B_NEEDCOMMIT; 2093 } 2094 } 2095 splx(s); 2096} 2097 2098#ifndef NFS_NOSERVER 2099/* 2100 * Map errnos to NFS error numbers. For Version 3 also filter out error 2101 * numbers not specified for the associated procedure. 2102 */ 2103int 2104nfsrv_errmap(nd, err) 2105 struct nfsrv_descript *nd; 2106 register int err; 2107{ 2108 register short *defaulterrp, *errp; 2109 2110 if (nd->nd_flag & ND_NFSV3) { 2111 if (nd->nd_procnum <= NFSPROC_COMMIT) { 2112 errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 2113 while (*++errp) { 2114 if (*errp == err) 2115 return (err); 2116 else if (*errp > err) 2117 break; 2118 } 2119 return ((int)*defaulterrp); 2120 } else 2121 return (err & 0xffff); 2122 } 2123 if (err <= ELAST) 2124 return ((int)nfsrv_v2errmap[err - 1]); 2125 return (NFSERR_IO); 2126} 2127 2128int 2129nfsrv_object_create(vp) 2130 struct vnode *vp; 2131{ 2132 2133 if (vp == NULL || vp->v_type != VREG) 2134 return (1); 2135 return (vfs_object_create(vp, curproc, 2136 curproc ? curproc->p_ucred : NULL, 1)); 2137} 2138#endif /* NFS_NOSERVER */ 2139