nfs_srvsubs.c revision 54485
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 * 3636503Speter * @(#)nfs_subs.c 8.8 (Berkeley) 5/22/95 3750477Speter * $FreeBSD: head/sys/nfsserver/nfs_srvsubs.c 54485 1999-12-12 07:06:39Z dillon $ 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> 4648274Speter#include <sys/systm.h> 4748274Speter#include <sys/kernel.h> 4831886Sbde#include <sys/buf.h> 491541Srgrimes#include <sys/proc.h> 501541Srgrimes#include <sys/mount.h> 511541Srgrimes#include <sys/vnode.h> 521541Srgrimes#include <sys/namei.h> 531541Srgrimes#include <sys/mbuf.h> 541541Srgrimes#include <sys/socket.h> 551541Srgrimes#include <sys/stat.h> 569336Sdfr#include <sys/malloc.h> 572997Swollman#include <sys/sysent.h> 582997Swollman#include <sys/syscall.h> 5949535Sphk#include <sys/conf.h> 601541Srgrimes 613305Sphk#include <vm/vm.h> 6212662Sdg#include <vm/vm_object.h> 6312662Sdg#include <vm/vm_extern.h> 6432011Sbde#include <vm/vm_zone.h> 653305Sphk 661541Srgrimes#include <nfs/rpcv2.h> 679336Sdfr#include <nfs/nfsproto.h> 6830808Sbde#include <nfs/nfs.h> 691541Srgrimes#include <nfs/nfsnode.h> 701541Srgrimes#include <nfs/xdr_subs.h> 711541Srgrimes#include <nfs/nfsm_subs.h> 721541Srgrimes#include <nfs/nfsmount.h> 731541Srgrimes#include <nfs/nqnfs.h> 741541Srgrimes#include <nfs/nfsrtt.h> 751541Srgrimes 761541Srgrimes#include <netinet/in.h> 771541Srgrimes#ifdef ISO 781541Srgrimes#include <netiso/iso.h> 791541Srgrimes#endif 801541Srgrimes 811541Srgrimes/* 821541Srgrimes * Data items converted to xdr at startup, since they are constant 831541Srgrimes * This is kinda hokey, but may save a little time doing byte swaps 841541Srgrimes */ 8536541Speteru_int32_t nfs_xdrneg1; 8636541Speteru_int32_t rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 879336Sdfr rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 881541Srgrimes rpc_auth_kerb; 8936541Speteru_int32_t nfs_prog, nqnfs_prog, nfs_true, nfs_false; 901541Srgrimes 911541Srgrimes/* And other global data */ 9236541Speterstatic u_int32_t nfs_xid = 0; 9312911Sphkstatic enum vtype nv2tov_type[8]= { 9412911Sphk VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON 9512911Sphk}; 9612911Sphkenum vtype nv3tov_type[8]= { 9712911Sphk VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO 9812911Sphk}; 9912911Sphk 1009336Sdfrint nfs_ticks; 10142957Sdillonint nfs_pbuf_freecnt = -1; /* start out unlimited */ 1029336Sdfr 1039759Sbdestruct nfs_reqq nfs_reqq; 1049759Sbdestruct nfssvc_sockhead nfssvc_sockhead; 1059759Sbdeint nfssvc_sockhead_flag; 1069759Sbdestruct nfsd_head nfsd_head; 1079759Sbdeint nfsd_head_flag; 1089759Sbdestruct nfs_bufq nfs_bufq; 1099759Sbdestruct nqtimerhead nqtimerhead; 1109759Sbdestruct nqfhhashhead *nqfhhashtbl; 1119759Sbdeu_long nqfhhash; 1129759Sbde 11338894Sbdestatic void (*nfs_prev_lease_updatetime) __P((int)); 11438894Sbdestatic int nfs_prev_nfssvc_sy_narg; 11538894Sbdestatic sy_call_t *nfs_prev_nfssvc_sy_call; 11638894Sbde 11713416Sphk#ifndef NFS_NOSERVER 11838894Sbde 11938894Sbdestatic vop_t *nfs_prev_vop_lease_check; 12038894Sbdestatic int nfs_prev_getfh_sy_narg; 12138894Sbdestatic sy_call_t *nfs_prev_getfh_sy_call; 12238894Sbde 1239336Sdfr/* 1249336Sdfr * Mapping of old NFS Version 2 RPC numbers to generic numbers. 1259336Sdfr */ 1269336Sdfrint nfsv3_procid[NFS_NPROCS] = { 1279336Sdfr NFSPROC_NULL, 1289336Sdfr NFSPROC_GETATTR, 1299336Sdfr NFSPROC_SETATTR, 1309336Sdfr NFSPROC_NOOP, 1319336Sdfr NFSPROC_LOOKUP, 1329336Sdfr NFSPROC_READLINK, 1339336Sdfr NFSPROC_READ, 1349336Sdfr NFSPROC_NOOP, 1359336Sdfr NFSPROC_WRITE, 1369336Sdfr NFSPROC_CREATE, 1379336Sdfr NFSPROC_REMOVE, 1389336Sdfr NFSPROC_RENAME, 1399336Sdfr NFSPROC_LINK, 1409336Sdfr NFSPROC_SYMLINK, 1419336Sdfr NFSPROC_MKDIR, 1429336Sdfr NFSPROC_RMDIR, 1439336Sdfr NFSPROC_READDIR, 1449336Sdfr NFSPROC_FSSTAT, 1459336Sdfr NFSPROC_NOOP, 1469336Sdfr NFSPROC_NOOP, 1479336Sdfr NFSPROC_NOOP, 1489336Sdfr NFSPROC_NOOP, 1499336Sdfr NFSPROC_NOOP, 1509336Sdfr NFSPROC_NOOP, 1519336Sdfr NFSPROC_NOOP, 1529336Sdfr NFSPROC_NOOP 1539336Sdfr}; 1549336Sdfr 15513416Sphk#endif /* NFS_NOSERVER */ 1569336Sdfr/* 1579336Sdfr * and the reverse mapping from generic to Version 2 procedure numbers 1589336Sdfr */ 1599336Sdfrint nfsv2_procid[NFS_NPROCS] = { 1609336Sdfr NFSV2PROC_NULL, 1619336Sdfr NFSV2PROC_GETATTR, 1629336Sdfr NFSV2PROC_SETATTR, 1639336Sdfr NFSV2PROC_LOOKUP, 1649336Sdfr NFSV2PROC_NOOP, 1659336Sdfr NFSV2PROC_READLINK, 1669336Sdfr NFSV2PROC_READ, 1679336Sdfr NFSV2PROC_WRITE, 1689336Sdfr NFSV2PROC_CREATE, 1699336Sdfr NFSV2PROC_MKDIR, 1709336Sdfr NFSV2PROC_SYMLINK, 1719336Sdfr NFSV2PROC_CREATE, 1729336Sdfr NFSV2PROC_REMOVE, 1739336Sdfr NFSV2PROC_RMDIR, 1749336Sdfr NFSV2PROC_RENAME, 1759336Sdfr NFSV2PROC_LINK, 1769336Sdfr NFSV2PROC_READDIR, 1779336Sdfr NFSV2PROC_NOOP, 1789336Sdfr NFSV2PROC_STATFS, 1799336Sdfr NFSV2PROC_NOOP, 1809336Sdfr NFSV2PROC_NOOP, 1819336Sdfr NFSV2PROC_NOOP, 1829336Sdfr NFSV2PROC_NOOP, 1839336Sdfr NFSV2PROC_NOOP, 1849336Sdfr NFSV2PROC_NOOP, 1859336Sdfr NFSV2PROC_NOOP, 1869336Sdfr}; 1879336Sdfr 18813416Sphk#ifndef NFS_NOSERVER 1899336Sdfr/* 1909336Sdfr * Maps errno values to nfs error numbers. 1919336Sdfr * Use NFSERR_IO as the catch all for ones not specifically defined in 1929336Sdfr * RFC 1094. 1939336Sdfr */ 1949336Sdfrstatic u_char nfsrv_v2errmap[ELAST] = { 1959336Sdfr NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1969336Sdfr NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 1979336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 1989336Sdfr NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 1999336Sdfr NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 2009336Sdfr NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 2019336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 2029336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 2039336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 2049336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 2059336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 2069336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 2079336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 2089336Sdfr NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 2099336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 2109336Sdfr NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 21141796Sdt NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 21241796Sdt NFSERR_IO /* << Last is 86 */ 2139336Sdfr}; 2149336Sdfr 2159336Sdfr/* 2169336Sdfr * Maps errno values to nfs error numbers. 2179336Sdfr * Although it is not obvious whether or not NFS clients really care if 2189336Sdfr * a returned error value is in the specified list for the procedure, the 2199336Sdfr * safest thing to do is filter them appropriately. For Version 2, the 2209336Sdfr * X/Open XNFS document is the only specification that defines error values 2219336Sdfr * for each RPC (The RFC simply lists all possible error values for all RPCs), 2229336Sdfr * so I have decided to not do this for Version 2. 2239336Sdfr * The first entry is the default error return and the rest are the valid 2249336Sdfr * errors for that RPC in increasing numeric order. 2259336Sdfr */ 2269336Sdfrstatic short nfsv3err_null[] = { 2279336Sdfr 0, 2289336Sdfr 0, 2299336Sdfr}; 2309336Sdfr 2319336Sdfrstatic short nfsv3err_getattr[] = { 2329336Sdfr NFSERR_IO, 2339336Sdfr NFSERR_IO, 2349336Sdfr NFSERR_STALE, 2359336Sdfr NFSERR_BADHANDLE, 2369336Sdfr NFSERR_SERVERFAULT, 2379336Sdfr 0, 2389336Sdfr}; 2399336Sdfr 2409336Sdfrstatic short nfsv3err_setattr[] = { 2419336Sdfr NFSERR_IO, 2429336Sdfr NFSERR_PERM, 2439336Sdfr NFSERR_IO, 2449336Sdfr NFSERR_ACCES, 2459336Sdfr NFSERR_INVAL, 2469336Sdfr NFSERR_NOSPC, 2479336Sdfr NFSERR_ROFS, 2489336Sdfr NFSERR_DQUOT, 2499336Sdfr NFSERR_STALE, 2509336Sdfr NFSERR_BADHANDLE, 2519336Sdfr NFSERR_NOT_SYNC, 2529336Sdfr NFSERR_SERVERFAULT, 2539336Sdfr 0, 2549336Sdfr}; 2559336Sdfr 2569336Sdfrstatic short nfsv3err_lookup[] = { 2579336Sdfr NFSERR_IO, 2589336Sdfr NFSERR_NOENT, 2599336Sdfr NFSERR_IO, 2609336Sdfr NFSERR_ACCES, 2619336Sdfr NFSERR_NOTDIR, 2629336Sdfr NFSERR_NAMETOL, 2639336Sdfr NFSERR_STALE, 2649336Sdfr NFSERR_BADHANDLE, 2659336Sdfr NFSERR_SERVERFAULT, 2669336Sdfr 0, 2679336Sdfr}; 2689336Sdfr 2699336Sdfrstatic short nfsv3err_access[] = { 2709336Sdfr NFSERR_IO, 2719336Sdfr NFSERR_IO, 2729336Sdfr NFSERR_STALE, 2739336Sdfr NFSERR_BADHANDLE, 2749336Sdfr NFSERR_SERVERFAULT, 2759336Sdfr 0, 2769336Sdfr}; 2779336Sdfr 2789336Sdfrstatic short nfsv3err_readlink[] = { 2799336Sdfr NFSERR_IO, 2809336Sdfr NFSERR_IO, 2819336Sdfr NFSERR_ACCES, 2829336Sdfr NFSERR_INVAL, 2839336Sdfr NFSERR_STALE, 2849336Sdfr NFSERR_BADHANDLE, 2859336Sdfr NFSERR_NOTSUPP, 2869336Sdfr NFSERR_SERVERFAULT, 2879336Sdfr 0, 2889336Sdfr}; 2899336Sdfr 2909336Sdfrstatic short nfsv3err_read[] = { 2919336Sdfr NFSERR_IO, 2929336Sdfr NFSERR_IO, 2939336Sdfr NFSERR_NXIO, 2949336Sdfr NFSERR_ACCES, 2959336Sdfr NFSERR_INVAL, 2969336Sdfr NFSERR_STALE, 2979336Sdfr NFSERR_BADHANDLE, 2989336Sdfr NFSERR_SERVERFAULT, 2999336Sdfr 0, 3009336Sdfr}; 3019336Sdfr 3029336Sdfrstatic short nfsv3err_write[] = { 3039336Sdfr NFSERR_IO, 3049336Sdfr NFSERR_IO, 3059336Sdfr NFSERR_ACCES, 3069336Sdfr NFSERR_INVAL, 3079336Sdfr NFSERR_FBIG, 3089336Sdfr NFSERR_NOSPC, 3099336Sdfr NFSERR_ROFS, 3109336Sdfr NFSERR_DQUOT, 3119336Sdfr NFSERR_STALE, 3129336Sdfr NFSERR_BADHANDLE, 3139336Sdfr NFSERR_SERVERFAULT, 3149336Sdfr 0, 3159336Sdfr}; 3169336Sdfr 3179336Sdfrstatic short nfsv3err_create[] = { 3189336Sdfr NFSERR_IO, 3199336Sdfr NFSERR_IO, 3209336Sdfr NFSERR_ACCES, 3219336Sdfr NFSERR_EXIST, 3229336Sdfr NFSERR_NOTDIR, 3239336Sdfr NFSERR_NOSPC, 3249336Sdfr NFSERR_ROFS, 3259336Sdfr NFSERR_NAMETOL, 3269336Sdfr NFSERR_DQUOT, 3279336Sdfr NFSERR_STALE, 3289336Sdfr NFSERR_BADHANDLE, 3299336Sdfr NFSERR_NOTSUPP, 3309336Sdfr NFSERR_SERVERFAULT, 3319336Sdfr 0, 3329336Sdfr}; 3339336Sdfr 3349336Sdfrstatic short nfsv3err_mkdir[] = { 3359336Sdfr NFSERR_IO, 3369336Sdfr NFSERR_IO, 3379336Sdfr NFSERR_ACCES, 3389336Sdfr NFSERR_EXIST, 3399336Sdfr NFSERR_NOTDIR, 3409336Sdfr NFSERR_NOSPC, 3419336Sdfr NFSERR_ROFS, 3429336Sdfr NFSERR_NAMETOL, 3439336Sdfr NFSERR_DQUOT, 3449336Sdfr NFSERR_STALE, 3459336Sdfr NFSERR_BADHANDLE, 3469336Sdfr NFSERR_NOTSUPP, 3479336Sdfr NFSERR_SERVERFAULT, 3489336Sdfr 0, 3499336Sdfr}; 3509336Sdfr 3519336Sdfrstatic short nfsv3err_symlink[] = { 3529336Sdfr NFSERR_IO, 3539336Sdfr NFSERR_IO, 3549336Sdfr NFSERR_ACCES, 3559336Sdfr NFSERR_EXIST, 3569336Sdfr NFSERR_NOTDIR, 3579336Sdfr NFSERR_NOSPC, 3589336Sdfr NFSERR_ROFS, 3599336Sdfr NFSERR_NAMETOL, 3609336Sdfr NFSERR_DQUOT, 3619336Sdfr NFSERR_STALE, 3629336Sdfr NFSERR_BADHANDLE, 3639336Sdfr NFSERR_NOTSUPP, 3649336Sdfr NFSERR_SERVERFAULT, 3659336Sdfr 0, 3669336Sdfr}; 3679336Sdfr 3689336Sdfrstatic short nfsv3err_mknod[] = { 3699336Sdfr NFSERR_IO, 3709336Sdfr NFSERR_IO, 3719336Sdfr NFSERR_ACCES, 3729336Sdfr NFSERR_EXIST, 3739336Sdfr NFSERR_NOTDIR, 3749336Sdfr NFSERR_NOSPC, 3759336Sdfr NFSERR_ROFS, 3769336Sdfr NFSERR_NAMETOL, 3779336Sdfr NFSERR_DQUOT, 3789336Sdfr NFSERR_STALE, 3799336Sdfr NFSERR_BADHANDLE, 3809336Sdfr NFSERR_NOTSUPP, 3819336Sdfr NFSERR_SERVERFAULT, 3829336Sdfr NFSERR_BADTYPE, 3839336Sdfr 0, 3849336Sdfr}; 3859336Sdfr 3869336Sdfrstatic short nfsv3err_remove[] = { 3879336Sdfr NFSERR_IO, 3889336Sdfr NFSERR_NOENT, 3899336Sdfr NFSERR_IO, 3909336Sdfr NFSERR_ACCES, 3919336Sdfr NFSERR_NOTDIR, 3929336Sdfr NFSERR_ROFS, 3939336Sdfr NFSERR_NAMETOL, 3949336Sdfr NFSERR_STALE, 3959336Sdfr NFSERR_BADHANDLE, 3969336Sdfr NFSERR_SERVERFAULT, 3979336Sdfr 0, 3989336Sdfr}; 3999336Sdfr 4009336Sdfrstatic short nfsv3err_rmdir[] = { 4019336Sdfr NFSERR_IO, 4029336Sdfr NFSERR_NOENT, 4039336Sdfr NFSERR_IO, 4049336Sdfr NFSERR_ACCES, 4059336Sdfr NFSERR_EXIST, 4069336Sdfr NFSERR_NOTDIR, 4079336Sdfr NFSERR_INVAL, 4089336Sdfr NFSERR_ROFS, 4099336Sdfr NFSERR_NAMETOL, 4109336Sdfr NFSERR_NOTEMPTY, 4119336Sdfr NFSERR_STALE, 4129336Sdfr NFSERR_BADHANDLE, 4139336Sdfr NFSERR_NOTSUPP, 4149336Sdfr NFSERR_SERVERFAULT, 4159336Sdfr 0, 4169336Sdfr}; 4179336Sdfr 4189336Sdfrstatic short nfsv3err_rename[] = { 4199336Sdfr NFSERR_IO, 4209336Sdfr NFSERR_NOENT, 4219336Sdfr NFSERR_IO, 4229336Sdfr NFSERR_ACCES, 4239336Sdfr NFSERR_EXIST, 4249336Sdfr NFSERR_XDEV, 4259336Sdfr NFSERR_NOTDIR, 4269336Sdfr NFSERR_ISDIR, 4279336Sdfr NFSERR_INVAL, 4289336Sdfr NFSERR_NOSPC, 4299336Sdfr NFSERR_ROFS, 4309336Sdfr NFSERR_MLINK, 4319336Sdfr NFSERR_NAMETOL, 4329336Sdfr NFSERR_NOTEMPTY, 4339336Sdfr NFSERR_DQUOT, 4349336Sdfr NFSERR_STALE, 4359336Sdfr NFSERR_BADHANDLE, 4369336Sdfr NFSERR_NOTSUPP, 4379336Sdfr NFSERR_SERVERFAULT, 4389336Sdfr 0, 4399336Sdfr}; 4409336Sdfr 4419336Sdfrstatic short nfsv3err_link[] = { 4429336Sdfr NFSERR_IO, 4439336Sdfr NFSERR_IO, 4449336Sdfr NFSERR_ACCES, 4459336Sdfr NFSERR_EXIST, 4469336Sdfr NFSERR_XDEV, 4479336Sdfr NFSERR_NOTDIR, 4489336Sdfr NFSERR_INVAL, 4499336Sdfr NFSERR_NOSPC, 4509336Sdfr NFSERR_ROFS, 4519336Sdfr NFSERR_MLINK, 4529336Sdfr NFSERR_NAMETOL, 4539336Sdfr NFSERR_DQUOT, 4549336Sdfr NFSERR_STALE, 4559336Sdfr NFSERR_BADHANDLE, 4569336Sdfr NFSERR_NOTSUPP, 4579336Sdfr NFSERR_SERVERFAULT, 4589336Sdfr 0, 4599336Sdfr}; 4609336Sdfr 4619336Sdfrstatic short nfsv3err_readdir[] = { 4629336Sdfr NFSERR_IO, 4639336Sdfr NFSERR_IO, 4649336Sdfr NFSERR_ACCES, 4659336Sdfr NFSERR_NOTDIR, 4669336Sdfr NFSERR_STALE, 4679336Sdfr NFSERR_BADHANDLE, 4689336Sdfr NFSERR_BAD_COOKIE, 4699336Sdfr NFSERR_TOOSMALL, 4709336Sdfr NFSERR_SERVERFAULT, 4719336Sdfr 0, 4729336Sdfr}; 4739336Sdfr 4749336Sdfrstatic short nfsv3err_readdirplus[] = { 4759336Sdfr NFSERR_IO, 4769336Sdfr NFSERR_IO, 4779336Sdfr NFSERR_ACCES, 4789336Sdfr NFSERR_NOTDIR, 4799336Sdfr NFSERR_STALE, 4809336Sdfr NFSERR_BADHANDLE, 4819336Sdfr NFSERR_BAD_COOKIE, 4829336Sdfr NFSERR_NOTSUPP, 4839336Sdfr NFSERR_TOOSMALL, 4849336Sdfr NFSERR_SERVERFAULT, 4859336Sdfr 0, 4869336Sdfr}; 4879336Sdfr 4889336Sdfrstatic short nfsv3err_fsstat[] = { 4899336Sdfr NFSERR_IO, 4909336Sdfr NFSERR_IO, 4919336Sdfr NFSERR_STALE, 4929336Sdfr NFSERR_BADHANDLE, 4939336Sdfr NFSERR_SERVERFAULT, 4949336Sdfr 0, 4959336Sdfr}; 4969336Sdfr 4979336Sdfrstatic short nfsv3err_fsinfo[] = { 4989336Sdfr NFSERR_STALE, 4999336Sdfr NFSERR_STALE, 5009336Sdfr NFSERR_BADHANDLE, 5019336Sdfr NFSERR_SERVERFAULT, 5029336Sdfr 0, 5039336Sdfr}; 5049336Sdfr 5059336Sdfrstatic short nfsv3err_pathconf[] = { 5069336Sdfr NFSERR_STALE, 5079336Sdfr NFSERR_STALE, 5089336Sdfr NFSERR_BADHANDLE, 5099336Sdfr NFSERR_SERVERFAULT, 5109336Sdfr 0, 5119336Sdfr}; 5129336Sdfr 5139336Sdfrstatic short nfsv3err_commit[] = { 5149336Sdfr NFSERR_IO, 5159336Sdfr NFSERR_IO, 5169336Sdfr NFSERR_STALE, 5179336Sdfr NFSERR_BADHANDLE, 5189336Sdfr NFSERR_SERVERFAULT, 5199336Sdfr 0, 5209336Sdfr}; 5219336Sdfr 5229336Sdfrstatic short *nfsrv_v3errmap[] = { 5239336Sdfr nfsv3err_null, 5249336Sdfr nfsv3err_getattr, 5259336Sdfr nfsv3err_setattr, 5269336Sdfr nfsv3err_lookup, 5279336Sdfr nfsv3err_access, 5289336Sdfr nfsv3err_readlink, 5299336Sdfr nfsv3err_read, 5309336Sdfr nfsv3err_write, 5319336Sdfr nfsv3err_create, 5329336Sdfr nfsv3err_mkdir, 5339336Sdfr nfsv3err_symlink, 5349336Sdfr nfsv3err_mknod, 5359336Sdfr nfsv3err_remove, 5369336Sdfr nfsv3err_rmdir, 5379336Sdfr nfsv3err_rename, 5389336Sdfr nfsv3err_link, 5399336Sdfr nfsv3err_readdir, 5409336Sdfr nfsv3err_readdirplus, 5419336Sdfr nfsv3err_fsstat, 5429336Sdfr nfsv3err_fsinfo, 5439336Sdfr nfsv3err_pathconf, 5449336Sdfr nfsv3err_commit, 5459336Sdfr}; 5469336Sdfr 54713416Sphk#endif /* NFS_NOSERVER */ 54813416Sphk 5491541Srgrimesextern struct nfsrtt nfsrtt; 5501541Srgrimesextern time_t nqnfsstarttime; 5511541Srgrimesextern int nqsrv_clockskew; 5521541Srgrimesextern int nqsrv_writeslack; 5531541Srgrimesextern int nqsrv_maxlease; 5549336Sdfrextern struct nfsstats nfsstats; 5559336Sdfrextern int nqnfs_piggy[NFS_NPROCS]; 5569336Sdfrextern nfstype nfsv2_type[9]; 5579336Sdfrextern nfstype nfsv3_type[9]; 5589336Sdfrextern struct nfsnodehashhead *nfsnodehashtbl; 5599336Sdfrextern u_long nfsnodehash; 5601541Srgrimes 5612997Swollmanstruct getfh_args; 5622997Swollmanextern int getfh(struct proc *, struct getfh_args *, int *); 5632997Swollmanstruct nfssvc_args; 5642997Swollmanextern int nfssvc(struct proc *, struct nfssvc_args *, int *); 5652997Swollman 5663664SphkLIST_HEAD(nfsnodehashhead, nfsnode); 5673664Sphk 56827446Sdfrint nfs_webnamei __P((struct nameidata *, struct vnode *, struct proc *)); 56927446Sdfr 57034961Sphku_quad_t 57134961Sphknfs_curusec() 57234961Sphk{ 57334961Sphk struct timeval tv; 57434961Sphk 57534961Sphk getmicrotime(&tv); 57634961Sphk return ((u_quad_t)tv.tv_sec * 1000000 + (u_quad_t)tv.tv_usec); 57734961Sphk} 57834961Sphk 5791541Srgrimes/* 5801541Srgrimes * Create the header for an rpc request packet 5811541Srgrimes * The hsiz is the size of the rest of the nfs request header. 5821541Srgrimes * (just used to decide if a cluster is a good idea) 5831541Srgrimes */ 5841541Srgrimesstruct mbuf * 5851541Srgrimesnfsm_reqh(vp, procid, hsiz, bposp) 5861541Srgrimes struct vnode *vp; 5871541Srgrimes u_long procid; 5881541Srgrimes int hsiz; 5891541Srgrimes caddr_t *bposp; 5901541Srgrimes{ 5911541Srgrimes register struct mbuf *mb; 59236541Speter register u_int32_t *tl; 5931541Srgrimes register caddr_t bpos; 5941541Srgrimes struct mbuf *mb2; 5951541Srgrimes struct nfsmount *nmp; 5961541Srgrimes int nqflag; 5971541Srgrimes 5981541Srgrimes MGET(mb, M_WAIT, MT_DATA); 5991541Srgrimes if (hsiz >= MINCLSIZE) 6001541Srgrimes MCLGET(mb, M_WAIT); 6011541Srgrimes mb->m_len = 0; 6021541Srgrimes bpos = mtod(mb, caddr_t); 6038876Srgrimes 6041541Srgrimes /* 6051541Srgrimes * For NQNFS, add lease request. 6061541Srgrimes */ 6071541Srgrimes if (vp) { 6081541Srgrimes nmp = VFSTONFS(vp->v_mount); 6091541Srgrimes if (nmp->nm_flag & NFSMNT_NQNFS) { 6101541Srgrimes nqflag = NQNFS_NEEDLEASE(vp, procid); 6111541Srgrimes if (nqflag) { 61236541Speter nfsm_build(tl, u_int32_t *, 2*NFSX_UNSIGNED); 6131541Srgrimes *tl++ = txdr_unsigned(nqflag); 6141541Srgrimes *tl = txdr_unsigned(nmp->nm_leaseterm); 6151541Srgrimes } else { 61636541Speter nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 6171541Srgrimes *tl = 0; 6181541Srgrimes } 6191541Srgrimes } 6201541Srgrimes } 6211541Srgrimes /* Finally, return values */ 6221541Srgrimes *bposp = bpos; 6231541Srgrimes return (mb); 6241541Srgrimes} 6251541Srgrimes 6261541Srgrimes/* 6271541Srgrimes * Build the RPC header and fill in the authorization info. 6281541Srgrimes * The authorization string argument is only used when the credentials 6291541Srgrimes * come from outside of the kernel. 6301541Srgrimes * Returns the head of the mbuf list. 6311541Srgrimes */ 6321541Srgrimesstruct mbuf * 6339336Sdfrnfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 6349336Sdfr verf_str, mrest, mrest_len, mbp, xidp) 6351541Srgrimes register struct ucred *cr; 6369336Sdfr int nmflag; 6371541Srgrimes int procid; 6381541Srgrimes int auth_type; 6391541Srgrimes int auth_len; 6401541Srgrimes char *auth_str; 6419336Sdfr int verf_len; 6429336Sdfr char *verf_str; 6431541Srgrimes struct mbuf *mrest; 6441541Srgrimes int mrest_len; 6451541Srgrimes struct mbuf **mbp; 64636541Speter u_int32_t *xidp; 6471541Srgrimes{ 6481541Srgrimes register struct mbuf *mb; 64936541Speter register u_int32_t *tl; 6501541Srgrimes register caddr_t bpos; 6511541Srgrimes register int i; 6521541Srgrimes struct mbuf *mreq, *mb2; 6531541Srgrimes int siz, grpsiz, authsiz; 6541541Srgrimes 6551541Srgrimes authsiz = nfsm_rndup(auth_len); 6561541Srgrimes MGETHDR(mb, M_WAIT, MT_DATA); 6579336Sdfr if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 6581541Srgrimes MCLGET(mb, M_WAIT); 6599336Sdfr } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 6609336Sdfr MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 6611541Srgrimes } else { 6629336Sdfr MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 6631541Srgrimes } 6641541Srgrimes mb->m_len = 0; 6651541Srgrimes mreq = mb; 6661541Srgrimes bpos = mtod(mb, caddr_t); 6671541Srgrimes 6681541Srgrimes /* 6691541Srgrimes * First the RPC header. 6701541Srgrimes */ 67136541Speter nfsm_build(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 67217186Sdfr 67335066Sphk /* Get a pretty random xid to start with */ 67435066Sphk if (!nfs_xid) 67535066Sphk nfs_xid = random(); 67617186Sdfr /* 67717186Sdfr * Skip zero xid if it should ever happen. 67817186Sdfr */ 6791541Srgrimes if (++nfs_xid == 0) 6801541Srgrimes nfs_xid++; 68117186Sdfr 6821541Srgrimes *tl++ = *xidp = txdr_unsigned(nfs_xid); 6831541Srgrimes *tl++ = rpc_call; 6841541Srgrimes *tl++ = rpc_vers; 6859336Sdfr if (nmflag & NFSMNT_NQNFS) { 6861541Srgrimes *tl++ = txdr_unsigned(NQNFS_PROG); 6879336Sdfr *tl++ = txdr_unsigned(NQNFS_VER3); 6881541Srgrimes } else { 6891541Srgrimes *tl++ = txdr_unsigned(NFS_PROG); 6909336Sdfr if (nmflag & NFSMNT_NFSV3) 6919336Sdfr *tl++ = txdr_unsigned(NFS_VER3); 6929336Sdfr else 6939336Sdfr *tl++ = txdr_unsigned(NFS_VER2); 6941541Srgrimes } 6959336Sdfr if (nmflag & NFSMNT_NFSV3) 6969336Sdfr *tl++ = txdr_unsigned(procid); 6979336Sdfr else 6989336Sdfr *tl++ = txdr_unsigned(nfsv2_procid[procid]); 6991541Srgrimes 7001541Srgrimes /* 7011541Srgrimes * And then the authorization cred. 7021541Srgrimes */ 7031541Srgrimes *tl++ = txdr_unsigned(auth_type); 7041541Srgrimes *tl = txdr_unsigned(authsiz); 7051541Srgrimes switch (auth_type) { 7061541Srgrimes case RPCAUTH_UNIX: 70736541Speter nfsm_build(tl, u_int32_t *, auth_len); 7081541Srgrimes *tl++ = 0; /* stamp ?? */ 7091541Srgrimes *tl++ = 0; /* NULL hostname */ 7101541Srgrimes *tl++ = txdr_unsigned(cr->cr_uid); 7111541Srgrimes *tl++ = txdr_unsigned(cr->cr_groups[0]); 7121541Srgrimes grpsiz = (auth_len >> 2) - 5; 7131541Srgrimes *tl++ = txdr_unsigned(grpsiz); 7141541Srgrimes for (i = 1; i <= grpsiz; i++) 7151541Srgrimes *tl++ = txdr_unsigned(cr->cr_groups[i]); 7161541Srgrimes break; 7179336Sdfr case RPCAUTH_KERB4: 7181541Srgrimes siz = auth_len; 7191541Srgrimes while (siz > 0) { 7201541Srgrimes if (M_TRAILINGSPACE(mb) == 0) { 7211541Srgrimes MGET(mb2, M_WAIT, MT_DATA); 7221541Srgrimes if (siz >= MINCLSIZE) 7231541Srgrimes MCLGET(mb2, M_WAIT); 7241541Srgrimes mb->m_next = mb2; 7251541Srgrimes mb = mb2; 7261541Srgrimes mb->m_len = 0; 7271541Srgrimes bpos = mtod(mb, caddr_t); 7281541Srgrimes } 7291541Srgrimes i = min(siz, M_TRAILINGSPACE(mb)); 7301541Srgrimes bcopy(auth_str, bpos, i); 7311541Srgrimes mb->m_len += i; 7321541Srgrimes auth_str += i; 7331541Srgrimes bpos += i; 7341541Srgrimes siz -= i; 7351541Srgrimes } 7361541Srgrimes if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 7371541Srgrimes for (i = 0; i < siz; i++) 7381541Srgrimes *bpos++ = '\0'; 7391541Srgrimes mb->m_len += siz; 7401541Srgrimes } 7411541Srgrimes break; 7421541Srgrimes }; 7439336Sdfr 7449336Sdfr /* 7459336Sdfr * And the verifier... 7469336Sdfr */ 74736541Speter nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7489336Sdfr if (verf_str) { 7499336Sdfr *tl++ = txdr_unsigned(RPCAUTH_KERB4); 7509336Sdfr *tl = txdr_unsigned(verf_len); 7519336Sdfr siz = verf_len; 7529336Sdfr while (siz > 0) { 7539336Sdfr if (M_TRAILINGSPACE(mb) == 0) { 7549336Sdfr MGET(mb2, M_WAIT, MT_DATA); 7559336Sdfr if (siz >= MINCLSIZE) 7569336Sdfr MCLGET(mb2, M_WAIT); 7579336Sdfr mb->m_next = mb2; 7589336Sdfr mb = mb2; 7599336Sdfr mb->m_len = 0; 7609336Sdfr bpos = mtod(mb, caddr_t); 7619336Sdfr } 7629336Sdfr i = min(siz, M_TRAILINGSPACE(mb)); 7639336Sdfr bcopy(verf_str, bpos, i); 7649336Sdfr mb->m_len += i; 7659336Sdfr verf_str += i; 7669336Sdfr bpos += i; 7679336Sdfr siz -= i; 7689336Sdfr } 7699336Sdfr if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 7709336Sdfr for (i = 0; i < siz; i++) 7719336Sdfr *bpos++ = '\0'; 7729336Sdfr mb->m_len += siz; 7739336Sdfr } 7749336Sdfr } else { 7759336Sdfr *tl++ = txdr_unsigned(RPCAUTH_NULL); 7769336Sdfr *tl = 0; 7779336Sdfr } 7781541Srgrimes mb->m_next = mrest; 7799336Sdfr mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 7801541Srgrimes mreq->m_pkthdr.rcvif = (struct ifnet *)0; 7811541Srgrimes *mbp = mb; 7821541Srgrimes return (mreq); 7831541Srgrimes} 7841541Srgrimes 7851541Srgrimes/* 7861541Srgrimes * copies mbuf chain to the uio scatter/gather list 7871541Srgrimes */ 7881549Srgrimesint 7891541Srgrimesnfsm_mbuftouio(mrep, uiop, siz, dpos) 7901541Srgrimes struct mbuf **mrep; 7911541Srgrimes register struct uio *uiop; 7921541Srgrimes int siz; 7931541Srgrimes caddr_t *dpos; 7941541Srgrimes{ 7951541Srgrimes register char *mbufcp, *uiocp; 7961541Srgrimes register int xfer, left, len; 7971541Srgrimes register struct mbuf *mp; 7981541Srgrimes long uiosiz, rem; 7991541Srgrimes int error = 0; 8001541Srgrimes 8011541Srgrimes mp = *mrep; 8021541Srgrimes mbufcp = *dpos; 8031541Srgrimes len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 8041541Srgrimes rem = nfsm_rndup(siz)-siz; 8051541Srgrimes while (siz > 0) { 8061541Srgrimes if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 8071541Srgrimes return (EFBIG); 8081541Srgrimes left = uiop->uio_iov->iov_len; 8091541Srgrimes uiocp = uiop->uio_iov->iov_base; 8101541Srgrimes if (left > siz) 8111541Srgrimes left = siz; 8121541Srgrimes uiosiz = left; 8131541Srgrimes while (left > 0) { 8141541Srgrimes while (len == 0) { 8151541Srgrimes mp = mp->m_next; 8161541Srgrimes if (mp == NULL) 8171541Srgrimes return (EBADRPC); 8181541Srgrimes mbufcp = mtod(mp, caddr_t); 8191541Srgrimes len = mp->m_len; 8201541Srgrimes } 8211541Srgrimes xfer = (left > len) ? len : left; 8221541Srgrimes#ifdef notdef 8231541Srgrimes /* Not Yet.. */ 8241541Srgrimes if (uiop->uio_iov->iov_op != NULL) 8251541Srgrimes (*(uiop->uio_iov->iov_op)) 8261541Srgrimes (mbufcp, uiocp, xfer); 8271541Srgrimes else 8281541Srgrimes#endif 8291541Srgrimes if (uiop->uio_segflg == UIO_SYSSPACE) 8301541Srgrimes bcopy(mbufcp, uiocp, xfer); 8311541Srgrimes else 8321541Srgrimes copyout(mbufcp, uiocp, xfer); 8331541Srgrimes left -= xfer; 8341541Srgrimes len -= xfer; 8351541Srgrimes mbufcp += xfer; 8361541Srgrimes uiocp += xfer; 8371541Srgrimes uiop->uio_offset += xfer; 8381541Srgrimes uiop->uio_resid -= xfer; 8391541Srgrimes } 8401541Srgrimes if (uiop->uio_iov->iov_len <= siz) { 8411541Srgrimes uiop->uio_iovcnt--; 8421541Srgrimes uiop->uio_iov++; 8431541Srgrimes } else { 8441541Srgrimes uiop->uio_iov->iov_base += uiosiz; 8451541Srgrimes uiop->uio_iov->iov_len -= uiosiz; 8461541Srgrimes } 8471541Srgrimes siz -= uiosiz; 8481541Srgrimes } 8491541Srgrimes *dpos = mbufcp; 8501541Srgrimes *mrep = mp; 8511541Srgrimes if (rem > 0) { 8521541Srgrimes if (len < rem) 8531541Srgrimes error = nfs_adv(mrep, dpos, rem, len); 8541541Srgrimes else 8551541Srgrimes *dpos += rem; 8561541Srgrimes } 8571541Srgrimes return (error); 8581541Srgrimes} 8591541Srgrimes 8601541Srgrimes/* 86117186Sdfr * copies a uio scatter/gather list to an mbuf chain. 86217186Sdfr * NOTE: can ony handle iovcnt == 1 8631541Srgrimes */ 8641549Srgrimesint 8651541Srgrimesnfsm_uiotombuf(uiop, mq, siz, bpos) 8661541Srgrimes register struct uio *uiop; 8671541Srgrimes struct mbuf **mq; 8681541Srgrimes int siz; 8691541Srgrimes caddr_t *bpos; 8701541Srgrimes{ 8711541Srgrimes register char *uiocp; 8721541Srgrimes register struct mbuf *mp, *mp2; 8731541Srgrimes register int xfer, left, mlen; 8741541Srgrimes int uiosiz, clflg, rem; 8751541Srgrimes char *cp; 8761541Srgrimes 87736519Speter#ifdef DIAGNOSTIC 87817186Sdfr if (uiop->uio_iovcnt != 1) 87917186Sdfr panic("nfsm_uiotombuf: iovcnt != 1"); 88036519Speter#endif 88117186Sdfr 8821541Srgrimes if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 8831541Srgrimes clflg = 1; 8841541Srgrimes else 8851541Srgrimes clflg = 0; 8861541Srgrimes rem = nfsm_rndup(siz)-siz; 8871541Srgrimes mp = mp2 = *mq; 8881541Srgrimes while (siz > 0) { 8891541Srgrimes left = uiop->uio_iov->iov_len; 8901541Srgrimes uiocp = uiop->uio_iov->iov_base; 8911541Srgrimes if (left > siz) 8921541Srgrimes left = siz; 8931541Srgrimes uiosiz = left; 8941541Srgrimes while (left > 0) { 8951541Srgrimes mlen = M_TRAILINGSPACE(mp); 8961541Srgrimes if (mlen == 0) { 8971541Srgrimes MGET(mp, M_WAIT, MT_DATA); 8981541Srgrimes if (clflg) 8991541Srgrimes MCLGET(mp, M_WAIT); 9001541Srgrimes mp->m_len = 0; 9011541Srgrimes mp2->m_next = mp; 9021541Srgrimes mp2 = mp; 9031541Srgrimes mlen = M_TRAILINGSPACE(mp); 9041541Srgrimes } 9051541Srgrimes xfer = (left > mlen) ? mlen : left; 9061541Srgrimes#ifdef notdef 9071541Srgrimes /* Not Yet.. */ 9081541Srgrimes if (uiop->uio_iov->iov_op != NULL) 9091541Srgrimes (*(uiop->uio_iov->iov_op)) 9101541Srgrimes (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 9111541Srgrimes else 9121541Srgrimes#endif 9131541Srgrimes if (uiop->uio_segflg == UIO_SYSSPACE) 9141541Srgrimes bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 9151541Srgrimes else 9161541Srgrimes copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 9171541Srgrimes mp->m_len += xfer; 9181541Srgrimes left -= xfer; 9191541Srgrimes uiocp += xfer; 9201541Srgrimes uiop->uio_offset += xfer; 9211541Srgrimes uiop->uio_resid -= xfer; 9221541Srgrimes } 92317186Sdfr uiop->uio_iov->iov_base += uiosiz; 92417186Sdfr uiop->uio_iov->iov_len -= uiosiz; 9251541Srgrimes siz -= uiosiz; 9261541Srgrimes } 9271541Srgrimes if (rem > 0) { 9281541Srgrimes if (rem > M_TRAILINGSPACE(mp)) { 9291541Srgrimes MGET(mp, M_WAIT, MT_DATA); 9301541Srgrimes mp->m_len = 0; 9311541Srgrimes mp2->m_next = mp; 9321541Srgrimes } 9331541Srgrimes cp = mtod(mp, caddr_t)+mp->m_len; 9341541Srgrimes for (left = 0; left < rem; left++) 9351541Srgrimes *cp++ = '\0'; 9361541Srgrimes mp->m_len += rem; 9371541Srgrimes *bpos = cp; 9381541Srgrimes } else 9391541Srgrimes *bpos = mtod(mp, caddr_t)+mp->m_len; 9401541Srgrimes *mq = mp; 9411541Srgrimes return (0); 9421541Srgrimes} 9431541Srgrimes 9441541Srgrimes/* 9451541Srgrimes * Help break down an mbuf chain by setting the first siz bytes contiguous 9461541Srgrimes * pointed to by returned val. 9471541Srgrimes * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 9481541Srgrimes * cases. (The macros use the vars. dpos and dpos2) 9491541Srgrimes */ 9501549Srgrimesint 9511541Srgrimesnfsm_disct(mdp, dposp, siz, left, cp2) 9521541Srgrimes struct mbuf **mdp; 9531541Srgrimes caddr_t *dposp; 9541541Srgrimes int siz; 9551541Srgrimes int left; 9561541Srgrimes caddr_t *cp2; 9571541Srgrimes{ 9581541Srgrimes register struct mbuf *mp, *mp2; 9591541Srgrimes register int siz2, xfer; 9601541Srgrimes register caddr_t p; 9611541Srgrimes 9621541Srgrimes mp = *mdp; 9631541Srgrimes while (left == 0) { 9641541Srgrimes *mdp = mp = mp->m_next; 9651541Srgrimes if (mp == NULL) 9661541Srgrimes return (EBADRPC); 9671541Srgrimes left = mp->m_len; 9681541Srgrimes *dposp = mtod(mp, caddr_t); 9691541Srgrimes } 9701541Srgrimes if (left >= siz) { 9711541Srgrimes *cp2 = *dposp; 9721541Srgrimes *dposp += siz; 9731541Srgrimes } else if (mp->m_next == NULL) { 9741541Srgrimes return (EBADRPC); 9751541Srgrimes } else if (siz > MHLEN) { 9761541Srgrimes panic("nfs S too big"); 9771541Srgrimes } else { 9781541Srgrimes MGET(mp2, M_WAIT, MT_DATA); 9791541Srgrimes mp2->m_next = mp->m_next; 9801541Srgrimes mp->m_next = mp2; 9811541Srgrimes mp->m_len -= left; 9821541Srgrimes mp = mp2; 9831541Srgrimes *cp2 = p = mtod(mp, caddr_t); 9841541Srgrimes bcopy(*dposp, p, left); /* Copy what was left */ 9851541Srgrimes siz2 = siz-left; 9861541Srgrimes p += left; 9871541Srgrimes mp2 = mp->m_next; 9881541Srgrimes /* Loop around copying up the siz2 bytes */ 9891541Srgrimes while (siz2 > 0) { 9901541Srgrimes if (mp2 == NULL) 9911541Srgrimes return (EBADRPC); 9921541Srgrimes xfer = (siz2 > mp2->m_len) ? mp2->m_len : siz2; 9931541Srgrimes if (xfer > 0) { 9941541Srgrimes bcopy(mtod(mp2, caddr_t), p, xfer); 9951541Srgrimes NFSMADV(mp2, xfer); 9961541Srgrimes mp2->m_len -= xfer; 9971541Srgrimes p += xfer; 9981541Srgrimes siz2 -= xfer; 9991541Srgrimes } 10001541Srgrimes if (siz2 > 0) 10011541Srgrimes mp2 = mp2->m_next; 10021541Srgrimes } 10031541Srgrimes mp->m_len = siz; 10041541Srgrimes *mdp = mp2; 10051541Srgrimes *dposp = mtod(mp2, caddr_t); 10061541Srgrimes } 10071541Srgrimes return (0); 10081541Srgrimes} 10091541Srgrimes 10101541Srgrimes/* 10111541Srgrimes * Advance the position in the mbuf chain. 10121541Srgrimes */ 10131549Srgrimesint 10141541Srgrimesnfs_adv(mdp, dposp, offs, left) 10151541Srgrimes struct mbuf **mdp; 10161541Srgrimes caddr_t *dposp; 10171541Srgrimes int offs; 10181541Srgrimes int left; 10191541Srgrimes{ 10201541Srgrimes register struct mbuf *m; 10211541Srgrimes register int s; 10221541Srgrimes 10231541Srgrimes m = *mdp; 10241541Srgrimes s = left; 10251541Srgrimes while (s < offs) { 10261541Srgrimes offs -= s; 10271541Srgrimes m = m->m_next; 10281541Srgrimes if (m == NULL) 10291541Srgrimes return (EBADRPC); 10301541Srgrimes s = m->m_len; 10311541Srgrimes } 10321541Srgrimes *mdp = m; 10331541Srgrimes *dposp = mtod(m, caddr_t)+offs; 10341541Srgrimes return (0); 10351541Srgrimes} 10361541Srgrimes 10371541Srgrimes/* 10381541Srgrimes * Copy a string into mbufs for the hard cases... 10391541Srgrimes */ 10401549Srgrimesint 10411541Srgrimesnfsm_strtmbuf(mb, bpos, cp, siz) 10421541Srgrimes struct mbuf **mb; 10431541Srgrimes char **bpos; 104436511Speter const char *cp; 10451541Srgrimes long siz; 10461541Srgrimes{ 104736519Speter register struct mbuf *m1 = NULL, *m2; 10481541Srgrimes long left, xfer, len, tlen; 104936541Speter u_int32_t *tl; 10501541Srgrimes int putsize; 10511541Srgrimes 10521541Srgrimes putsize = 1; 10531541Srgrimes m2 = *mb; 10541541Srgrimes left = M_TRAILINGSPACE(m2); 10551541Srgrimes if (left > 0) { 105636541Speter tl = ((u_int32_t *)(*bpos)); 10571541Srgrimes *tl++ = txdr_unsigned(siz); 10581541Srgrimes putsize = 0; 10591541Srgrimes left -= NFSX_UNSIGNED; 10601541Srgrimes m2->m_len += NFSX_UNSIGNED; 10611541Srgrimes if (left > 0) { 10621541Srgrimes bcopy(cp, (caddr_t) tl, left); 10631541Srgrimes siz -= left; 10641541Srgrimes cp += left; 10651541Srgrimes m2->m_len += left; 10661541Srgrimes left = 0; 10671541Srgrimes } 10681541Srgrimes } 10691541Srgrimes /* Loop around adding mbufs */ 10701541Srgrimes while (siz > 0) { 10711541Srgrimes MGET(m1, M_WAIT, MT_DATA); 10721541Srgrimes if (siz > MLEN) 10731541Srgrimes MCLGET(m1, M_WAIT); 10741541Srgrimes m1->m_len = NFSMSIZ(m1); 10751541Srgrimes m2->m_next = m1; 10761541Srgrimes m2 = m1; 107736541Speter tl = mtod(m1, u_int32_t *); 10781541Srgrimes tlen = 0; 10791541Srgrimes if (putsize) { 10801541Srgrimes *tl++ = txdr_unsigned(siz); 10811541Srgrimes m1->m_len -= NFSX_UNSIGNED; 10821541Srgrimes tlen = NFSX_UNSIGNED; 10831541Srgrimes putsize = 0; 10841541Srgrimes } 10851541Srgrimes if (siz < m1->m_len) { 10861541Srgrimes len = nfsm_rndup(siz); 10871541Srgrimes xfer = siz; 10881541Srgrimes if (xfer < len) 10891541Srgrimes *(tl+(xfer>>2)) = 0; 10901541Srgrimes } else { 10911541Srgrimes xfer = len = m1->m_len; 10921541Srgrimes } 10931541Srgrimes bcopy(cp, (caddr_t) tl, xfer); 10941541Srgrimes m1->m_len = len+tlen; 10951541Srgrimes siz -= xfer; 10961541Srgrimes cp += xfer; 10971541Srgrimes } 10981541Srgrimes *mb = m1; 10991541Srgrimes *bpos = mtod(m1, caddr_t)+m1->m_len; 11001541Srgrimes return (0); 11011541Srgrimes} 11021541Srgrimes 11031541Srgrimes/* 11041541Srgrimes * Called once to initialize data structures... 11051541Srgrimes */ 11061549Srgrimesint 110722521Sdysonnfs_init(vfsp) 110822521Sdyson struct vfsconf *vfsp; 11091541Srgrimes{ 11101541Srgrimes register int i; 11111541Srgrimes 111236329Speter nfsmount_zone = zinit("NFSMOUNT", sizeof(struct nfsmount), 0, 0, 1); 111336329Speter 11149336Sdfr /* 11159336Sdfr * Check to see if major data structures haven't bloated. 11169336Sdfr */ 11179336Sdfr if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) { 11189336Sdfr printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC); 11199336Sdfr printf("Try reducing NFS_UIDHASHSIZ\n"); 11209336Sdfr } 11219336Sdfr if (sizeof (struct nfsuid) > NFS_UIDALLOC) { 11229336Sdfr printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC); 11239336Sdfr printf("Try unionizing the nu_nickname and nu_flag fields\n"); 11249336Sdfr } 112522521Sdyson nfs_mount_type = vfsp->vfc_typenum; 11261541Srgrimes nfsrtt.pos = 0; 11271541Srgrimes rpc_vers = txdr_unsigned(RPC_VER2); 11281541Srgrimes rpc_call = txdr_unsigned(RPC_CALL); 11291541Srgrimes rpc_reply = txdr_unsigned(RPC_REPLY); 11301541Srgrimes rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 11311541Srgrimes rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 11321541Srgrimes rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 11331541Srgrimes rpc_autherr = txdr_unsigned(RPC_AUTHERR); 11341541Srgrimes rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 11359336Sdfr rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 11361541Srgrimes nfs_prog = txdr_unsigned(NFS_PROG); 11379336Sdfr nqnfs_prog = txdr_unsigned(NQNFS_PROG); 11381541Srgrimes nfs_true = txdr_unsigned(TRUE); 11391541Srgrimes nfs_false = txdr_unsigned(FALSE); 11403664Sphk nfs_xdrneg1 = txdr_unsigned(-1); 11419336Sdfr nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 11429336Sdfr if (nfs_ticks < 1) 11439336Sdfr nfs_ticks = 1; 11441541Srgrimes /* Ensure async daemons disabled */ 114519449Sdfr for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { 11461541Srgrimes nfs_iodwant[i] = (struct proc *)0; 114719449Sdfr nfs_iodmount[i] = (struct nfsmount *)0; 114819449Sdfr } 11491541Srgrimes nfs_nhinit(); /* Init the nfsnode table */ 115013416Sphk#ifndef NFS_NOSERVER 11511541Srgrimes nfsrv_init(0); /* Init server data structures */ 11521541Srgrimes nfsrv_initcache(); /* Init the server request cache */ 115313416Sphk#endif 11541541Srgrimes 11551541Srgrimes /* 11561541Srgrimes * Initialize the nqnfs server stuff. 11571541Srgrimes */ 11581541Srgrimes if (nqnfsstarttime == 0) { 11591541Srgrimes nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 11601541Srgrimes + nqsrv_clockskew + nqsrv_writeslack; 11611541Srgrimes NQLOADNOVRAM(nqnfsstarttime); 11623664Sphk CIRCLEQ_INIT(&nqtimerhead); 11633664Sphk nqfhhashtbl = hashinit(NQLCHSZ, M_NQLEASE, &nqfhhash); 11641541Srgrimes } 11651541Srgrimes 11661541Srgrimes /* 11671541Srgrimes * Initialize reply list and start timer 11681541Srgrimes */ 11693664Sphk TAILQ_INIT(&nfs_reqq); 117016365Sphk 11713305Sphk nfs_timer(0); 11721549Srgrimes 11732997Swollman /* 11742997Swollman * Set up lease_check and lease_updatetime so that other parts 11752997Swollman * of the system can call us, if we are loadable. 11762997Swollman */ 117713416Sphk#ifndef NFS_NOSERVER 117838894Sbde nfs_prev_vop_lease_check = default_vnodeop_p[VOFFSET(vop_lease)]; 117930738Sphk default_vnodeop_p[VOFFSET(vop_lease)] = (vop_t *)nqnfs_vop_lease_check; 118013416Sphk#endif 118138894Sbde nfs_prev_lease_updatetime = lease_updatetime; 11822997Swollman lease_updatetime = nfs_lease_updatetime; 118338894Sbde nfs_prev_nfssvc_sy_narg = sysent[SYS_nfssvc].sy_narg; 11842997Swollman sysent[SYS_nfssvc].sy_narg = 2; 118538894Sbde nfs_prev_nfssvc_sy_call = sysent[SYS_nfssvc].sy_call; 118630738Sphk sysent[SYS_nfssvc].sy_call = (sy_call_t *)nfssvc; 118713416Sphk#ifndef NFS_NOSERVER 118838894Sbde nfs_prev_getfh_sy_narg = sysent[SYS_getfh].sy_narg; 11892997Swollman sysent[SYS_getfh].sy_narg = 2; 119038894Sbde nfs_prev_getfh_sy_call = sysent[SYS_getfh].sy_call; 119130738Sphk sysent[SYS_getfh].sy_call = (sy_call_t *)getfh; 11922997Swollman#endif 11932997Swollman 119442957Sdillon nfs_pbuf_freecnt = nswbuf / 2 + 1; 119542957Sdillon 11961549Srgrimes return (0); 11971541Srgrimes} 11981541Srgrimes 119938894Sbdeint 120038894Sbdenfs_uninit(vfsp) 120138894Sbde struct vfsconf *vfsp; 120238894Sbde{ 120338894Sbde 120438894Sbde untimeout(nfs_timer, (void *)NULL, nfs_timer_handle); 120538894Sbde nfs_mount_type = -1; 120638894Sbde#ifndef NFS_NOSERVER 120738894Sbde default_vnodeop_p[VOFFSET(vop_lease)] = nfs_prev_vop_lease_check; 120838894Sbde#endif 120938894Sbde lease_updatetime = nfs_prev_lease_updatetime; 121038894Sbde sysent[SYS_nfssvc].sy_narg = nfs_prev_nfssvc_sy_narg; 121138894Sbde sysent[SYS_nfssvc].sy_call = nfs_prev_nfssvc_sy_call; 121238894Sbde#ifndef NFS_NOSERVER 121338894Sbde sysent[SYS_getfh].sy_narg = nfs_prev_getfh_sy_narg; 121438894Sbde sysent[SYS_getfh].sy_call = nfs_prev_getfh_sy_call; 121538894Sbde#endif 121638894Sbde return (0); 121738894Sbde} 121838894Sbde 12191541Srgrimes/* 12201541Srgrimes * Attribute cache routines. 12211541Srgrimes * nfs_loadattrcache() - loads or updates the cache contents from attributes 12221541Srgrimes * that are on the mbuf list 12231541Srgrimes * nfs_getattrcache() - returns valid attributes if found in cache, returns 12241541Srgrimes * error otherwise 12251541Srgrimes */ 12261541Srgrimes 12271541Srgrimes/* 12281541Srgrimes * Load the attribute cache (that lives in the nfsnode entry) with 12291541Srgrimes * the values on the mbuf list and 12301541Srgrimes * Iff vap not NULL 12311541Srgrimes * copy the attributes to *vaper 12321541Srgrimes */ 12331549Srgrimesint 12341541Srgrimesnfs_loadattrcache(vpp, mdp, dposp, vaper) 12351541Srgrimes struct vnode **vpp; 12361541Srgrimes struct mbuf **mdp; 12371541Srgrimes caddr_t *dposp; 12381541Srgrimes struct vattr *vaper; 12391541Srgrimes{ 12401541Srgrimes register struct vnode *vp = *vpp; 12411541Srgrimes register struct vattr *vap; 12429336Sdfr register struct nfs_fattr *fp; 12433664Sphk register struct nfsnode *np; 124436541Speter register int32_t t1; 12459336Sdfr caddr_t cp2; 12469336Sdfr int error = 0, rdev; 12471541Srgrimes struct mbuf *md; 12481541Srgrimes enum vtype vtyp; 12491541Srgrimes u_short vmode; 12501541Srgrimes struct timespec mtime; 12519336Sdfr int v3 = NFS_ISV3(vp); 12521541Srgrimes 12531541Srgrimes md = *mdp; 12549336Sdfr t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 125543305Sdillon if ((error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2)) != 0) 12561541Srgrimes return (error); 12579336Sdfr fp = (struct nfs_fattr *)cp2; 12589336Sdfr if (v3) { 12599336Sdfr vtyp = nfsv3tov_type(fp->fa_type); 12609336Sdfr vmode = fxdr_unsigned(u_short, fp->fa_mode); 126148859Sphk rdev = makeudev(fxdr_unsigned(int, fp->fa3_rdev.specdata1), 126216634Sbde fxdr_unsigned(int, fp->fa3_rdev.specdata2)); 12639336Sdfr fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 12641541Srgrimes } else { 12659336Sdfr vtyp = nfsv2tov_type(fp->fa_type); 12669336Sdfr vmode = fxdr_unsigned(u_short, fp->fa_mode); 12679336Sdfr /* 12689336Sdfr * XXX 12699336Sdfr * 12709336Sdfr * The duplicate information returned in fa_type and fa_mode 12719336Sdfr * is an ambiguity in the NFS version 2 protocol. 12729336Sdfr * 12739336Sdfr * VREG should be taken literally as a regular file. If a 12749336Sdfr * server intents to return some type information differently 12759336Sdfr * in the upper bits of the mode field (e.g. for sockets, or 12769336Sdfr * FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we 12779336Sdfr * leave the examination of the mode bits even in the VREG 12789336Sdfr * case to avoid breakage for bogus servers, but we make sure 12799336Sdfr * that there are actually type bits set in the upper part of 12809336Sdfr * fa_mode (and failing that, trust the va_type field). 12819336Sdfr * 12829336Sdfr * NFSv3 cleared the issue, and requires fa_mode to not 12839336Sdfr * contain any type information (while also introduing sockets 12849336Sdfr * and FIFOs for fa_type). 12859336Sdfr */ 12869336Sdfr if (vtyp == VNON || (vtyp == VREG && (vmode & S_IFMT) != 0)) 12879336Sdfr vtyp = IFTOVT(vmode); 128836541Speter rdev = fxdr_unsigned(int32_t, fp->fa2_rdev); 12899336Sdfr fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 12909336Sdfr 12919336Sdfr /* 12929336Sdfr * Really ugly NFSv2 kludge. 12939336Sdfr */ 12949336Sdfr if (vtyp == VCHR && rdev == 0xffffffff) 12959336Sdfr vtyp = VFIFO; 12961541Srgrimes } 12979336Sdfr 12981541Srgrimes /* 12991541Srgrimes * If v_type == VNON it is a new node, so fill in the v_type, 13008876Srgrimes * n_mtime fields. Check to see if it represents a special 13011541Srgrimes * device, and if so, check for a possible alias. Once the 13021541Srgrimes * correct vnode has been obtained, fill in the rest of the 13031541Srgrimes * information. 13041541Srgrimes */ 13051541Srgrimes np = VTONFS(vp); 130610219Sdfr if (vp->v_type != vtyp) { 13079336Sdfr vp->v_type = vtyp; 13081541Srgrimes if (vp->v_type == VFIFO) { 13091541Srgrimes vp->v_op = fifo_nfsv2nodeop_p; 13101541Srgrimes } 13111541Srgrimes if (vp->v_type == VCHR || vp->v_type == VBLK) { 13121541Srgrimes vp->v_op = spec_nfsv2nodeop_p; 131350405Sphk addaliasu(vp, rdev); 13141541Srgrimes } 131518397Snate np->n_mtime = mtime.tv_sec; 13161541Srgrimes } 13171541Srgrimes vap = &np->n_vattr; 13181541Srgrimes vap->va_type = vtyp; 13191541Srgrimes vap->va_mode = (vmode & 07777); 132047028Sphk vap->va_rdev = rdev; 13211541Srgrimes vap->va_mtime = mtime; 13221541Srgrimes vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 13239336Sdfr if (v3) { 13249336Sdfr vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 13259336Sdfr vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 13269336Sdfr vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 132747751Speter vap->va_size = fxdr_hyper(&fp->fa3_size); 13289336Sdfr vap->va_blocksize = NFS_FABLKSIZE; 132947751Speter vap->va_bytes = fxdr_hyper(&fp->fa3_used); 133036541Speter vap->va_fileid = fxdr_unsigned(int32_t, 133136541Speter fp->fa3_fileid.nfsuquad[1]); 13329336Sdfr fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 13339336Sdfr fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 13349336Sdfr vap->va_flags = 0; 13359336Sdfr vap->va_filerev = 0; 13361541Srgrimes } else { 13379336Sdfr vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 13389336Sdfr vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 13399336Sdfr vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 134036541Speter vap->va_size = fxdr_unsigned(u_int32_t, fp->fa2_size); 134136541Speter vap->va_blocksize = fxdr_unsigned(int32_t, fp->fa2_blocksize); 134247751Speter vap->va_bytes = (u_quad_t)fxdr_unsigned(int32_t, fp->fa2_blocks) 134336541Speter * NFS_FABLKSIZE; 134436541Speter vap->va_fileid = fxdr_unsigned(int32_t, fp->fa2_fileid); 13459336Sdfr fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 13461541Srgrimes vap->va_flags = 0; 134736541Speter vap->va_ctime.tv_sec = fxdr_unsigned(u_int32_t, 134836541Speter fp->fa2_ctime.nfsv2_sec); 134918397Snate vap->va_ctime.tv_nsec = 0; 135036541Speter vap->va_gen = fxdr_unsigned(u_int32_t,fp->fa2_ctime.nfsv2_usec); 13511541Srgrimes vap->va_filerev = 0; 13521541Srgrimes } 13531541Srgrimes if (vap->va_size != np->n_size) { 13541541Srgrimes if (vap->va_type == VREG) { 13551541Srgrimes if (np->n_flag & NMODIFIED) { 13561541Srgrimes if (vap->va_size < np->n_size) 13571541Srgrimes vap->va_size = np->n_size; 13581541Srgrimes else 13591541Srgrimes np->n_size = vap->va_size; 136054480Sdillon } else { 13611541Srgrimes np->n_size = vap->va_size; 136254480Sdillon } 136341026Speter vnode_pager_setsize(vp, np->n_size); 136454480Sdillon } else { 13651541Srgrimes np->n_size = vap->va_size; 136654480Sdillon } 13671541Srgrimes } 136834961Sphk np->n_attrstamp = time_second; 13691541Srgrimes if (vaper != NULL) { 13701541Srgrimes bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 13711541Srgrimes if (np->n_flag & NCHG) { 13729336Sdfr if (np->n_flag & NACC) 13739336Sdfr vaper->va_atime = np->n_atim; 13749336Sdfr if (np->n_flag & NUPD) 13759336Sdfr vaper->va_mtime = np->n_mtim; 13761541Srgrimes } 13771541Srgrimes } 13781541Srgrimes return (0); 13791541Srgrimes} 13801541Srgrimes 138136176Speter#ifdef NFS_ACDEBUG 138236176Speter#include <sys/sysctl.h> 138344101SbdeSYSCTL_DECL(_vfs_nfs); 138436176Speterstatic int nfs_acdebug; 138536176SpeterSYSCTL_INT(_vfs_nfs, OID_AUTO, acdebug, CTLFLAG_RW, &nfs_acdebug, 0, ""); 138636176Speter#endif 138736176Speter 13881541Srgrimes/* 13891541Srgrimes * Check the time stamp 13901541Srgrimes * If the cache is valid, copy contents to *vap and return 0 13911541Srgrimes * otherwise return an error 13921541Srgrimes */ 13931549Srgrimesint 13941541Srgrimesnfs_getattrcache(vp, vaper) 13951541Srgrimes register struct vnode *vp; 13961541Srgrimes struct vattr *vaper; 13971541Srgrimes{ 139836176Speter register struct nfsnode *np; 13991541Srgrimes register struct vattr *vap; 140036176Speter struct nfsmount *nmp; 140136176Speter int timeo; 14021541Srgrimes 140336176Speter np = VTONFS(vp); 140436176Speter vap = &np->n_vattr; 140536176Speter nmp = VFSTONFS(vp->v_mount); 140636176Speter /* XXX n_mtime doesn't seem to be updated on a miss-and-reload */ 140736176Speter timeo = (time_second - np->n_mtime) / 10; 140836176Speter 140936176Speter#ifdef NFS_ACDEBUG 141036176Speter if (nfs_acdebug>1) 141136176Speter printf("nfs_getattrcache: initial timeo = %d\n", timeo); 141236176Speter#endif 141336176Speter 141436176Speter if (vap->va_type == VDIR) { 141536176Speter if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acdirmin) 141636176Speter timeo = nmp->nm_acdirmin; 141736176Speter else if (timeo > nmp->nm_acdirmax) 141836176Speter timeo = nmp->nm_acdirmax; 141936176Speter } else { 142036176Speter if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acregmin) 142136176Speter timeo = nmp->nm_acregmin; 142236176Speter else if (timeo > nmp->nm_acregmax) 142336176Speter timeo = nmp->nm_acregmax; 142436176Speter } 142536176Speter 142636176Speter#ifdef NFS_ACDEBUG 142736176Speter if (nfs_acdebug > 2) 142836176Speter printf("acregmin %d; acregmax %d; acdirmin %d; acdirmax %d\n", 142936176Speter nmp->nm_acregmin, nmp->nm_acregmax, 143036176Speter nmp->nm_acdirmin, nmp->nm_acdirmax); 143136176Speter 143236176Speter if (nfs_acdebug) 143337089Sbde printf("nfs_getattrcache: age = %d; final timeo = %d\n", 143436176Speter (time_second - np->n_attrstamp), timeo); 143536176Speter#endif 143636176Speter 143736176Speter if ((time_second - np->n_attrstamp) >= timeo) { 14381541Srgrimes nfsstats.attrcache_misses++; 14391541Srgrimes return (ENOENT); 14401541Srgrimes } 14411541Srgrimes nfsstats.attrcache_hits++; 14421541Srgrimes if (vap->va_size != np->n_size) { 14431541Srgrimes if (vap->va_type == VREG) { 14441541Srgrimes if (np->n_flag & NMODIFIED) { 14451541Srgrimes if (vap->va_size < np->n_size) 14461541Srgrimes vap->va_size = np->n_size; 14471541Srgrimes else 14481541Srgrimes np->n_size = vap->va_size; 144954480Sdillon } else { 14501541Srgrimes np->n_size = vap->va_size; 145154480Sdillon } 145241026Speter vnode_pager_setsize(vp, np->n_size); 145354480Sdillon } else { 14541541Srgrimes np->n_size = vap->va_size; 145554480Sdillon } 14561541Srgrimes } 14571541Srgrimes bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr)); 14581541Srgrimes if (np->n_flag & NCHG) { 14599336Sdfr if (np->n_flag & NACC) 14609336Sdfr vaper->va_atime = np->n_atim; 14619336Sdfr if (np->n_flag & NUPD) 14629336Sdfr vaper->va_mtime = np->n_mtim; 14631541Srgrimes } 14641541Srgrimes return (0); 14651541Srgrimes} 14661541Srgrimes 146713416Sphk#ifndef NFS_NOSERVER 14681541Srgrimes/* 146927446Sdfr * Set up nameidata for a lookup() call and do it. 147027446Sdfr * 147127446Sdfr * If pubflag is set, this call is done for a lookup operation on the 147227446Sdfr * public filehandle. In that case we allow crossing mountpoints and 147327446Sdfr * absolute pathnames. However, the caller is expected to check that 147427446Sdfr * the lookup result is within the public fs, and deny access if 147527446Sdfr * it is not. 147648125Sjulian * 147748125Sjulian * nfs_namei() clears out garbage fields that namei() might leave garbage. 147848125Sjulian * This is mainly ni_vp and ni_dvp when an error occurs, and ni_dvp when no 147948125Sjulian * error occurs but the parent was not requested. 148048125Sjulian * 148148125Sjulian * dirp may be set whether an error is returned or not, and must be 148248125Sjulian * released by the caller. 14831541Srgrimes */ 14841549Srgrimesint 148527446Sdfrnfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag, pubflag) 14861541Srgrimes register struct nameidata *ndp; 14871541Srgrimes fhandle_t *fhp; 14881541Srgrimes int len; 14891541Srgrimes struct nfssvc_sock *slp; 149028270Swollman struct sockaddr *nam; 14911541Srgrimes struct mbuf **mdp; 14921541Srgrimes caddr_t *dposp; 14939336Sdfr struct vnode **retdirp; 14941541Srgrimes struct proc *p; 149527446Sdfr int kerbflag, pubflag; 14961541Srgrimes{ 14971541Srgrimes register int i, rem; 14981541Srgrimes register struct mbuf *md; 149927446Sdfr register char *fromcp, *tocp, *cp; 150027446Sdfr struct iovec aiov; 150127446Sdfr struct uio auio; 15021541Srgrimes struct vnode *dp; 150327446Sdfr int error, rdonly, linklen; 15041541Srgrimes struct componentname *cnp = &ndp->ni_cnd; 15051541Srgrimes 15069336Sdfr *retdirp = (struct vnode *)0; 150729653Sdyson cnp->cn_pnbuf = zalloc(namei_zone); 150829653Sdyson 15091541Srgrimes /* 15101541Srgrimes * Copy the name from the mbuf list to ndp->ni_pnbuf 15111541Srgrimes * and set the various ndp fields appropriately. 15121541Srgrimes */ 15131541Srgrimes fromcp = *dposp; 15141541Srgrimes tocp = cnp->cn_pnbuf; 15151541Srgrimes md = *mdp; 15161541Srgrimes rem = mtod(md, caddr_t) + md->m_len - fromcp; 15171541Srgrimes for (i = 0; i < len; i++) { 15181541Srgrimes while (rem == 0) { 15191541Srgrimes md = md->m_next; 15201541Srgrimes if (md == NULL) { 15211541Srgrimes error = EBADRPC; 15221541Srgrimes goto out; 15231541Srgrimes } 15241541Srgrimes fromcp = mtod(md, caddr_t); 15251541Srgrimes rem = md->m_len; 15261541Srgrimes } 152727446Sdfr if (*fromcp == '\0' || (!pubflag && *fromcp == '/')) { 15289336Sdfr error = EACCES; 15291541Srgrimes goto out; 15301541Srgrimes } 15311541Srgrimes *tocp++ = *fromcp++; 15321541Srgrimes rem--; 15331541Srgrimes } 15341541Srgrimes *tocp = '\0'; 15351541Srgrimes *mdp = md; 15361541Srgrimes *dposp = fromcp; 15371541Srgrimes len = nfsm_rndup(len)-len; 15381541Srgrimes if (len > 0) { 15391541Srgrimes if (rem >= len) 15401541Srgrimes *dposp += len; 154127609Sdfr else if ((error = nfs_adv(mdp, dposp, len, rem)) != 0) 15429336Sdfr goto out; 15431541Srgrimes } 154427446Sdfr 15451541Srgrimes /* 15461541Srgrimes * Extract and set starting directory. 15471541Srgrimes */ 154827446Sdfr error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 154927446Sdfr nam, &rdonly, kerbflag, pubflag); 155027446Sdfr if (error) 15511541Srgrimes goto out; 15521541Srgrimes if (dp->v_type != VDIR) { 155317761Sdyson vrele(dp); 15541541Srgrimes error = ENOTDIR; 15551541Srgrimes goto out; 15561541Srgrimes } 155727446Sdfr 155827446Sdfr if (rdonly) 155927446Sdfr cnp->cn_flags |= RDONLY; 156027446Sdfr 156148125Sjulian /* 156248125Sjulian * Set return directory. Reference to dp is implicitly transfered 156348125Sjulian * to the returned pointer 156448125Sjulian */ 156527609Sdfr *retdirp = dp; 156627609Sdfr 156727446Sdfr if (pubflag) { 156827446Sdfr /* 156927446Sdfr * Oh joy. For WebNFS, handle those pesky '%' escapes, 157027446Sdfr * and the 'native path' indicator. 157127446Sdfr */ 157229653Sdyson cp = zalloc(namei_zone); 157327446Sdfr fromcp = cnp->cn_pnbuf; 157427446Sdfr tocp = cp; 157527446Sdfr if ((unsigned char)*fromcp >= WEBNFS_SPECCHAR_START) { 157627446Sdfr switch ((unsigned char)*fromcp) { 157727446Sdfr case WEBNFS_NATIVE_CHAR: 157827446Sdfr /* 157927446Sdfr * 'Native' path for us is the same 158027446Sdfr * as a path according to the NFS spec, 158127446Sdfr * just skip the escape char. 158227446Sdfr */ 158327446Sdfr fromcp++; 158427446Sdfr break; 158527446Sdfr /* 158627446Sdfr * More may be added in the future, range 0x80-0xff 158727446Sdfr */ 158827446Sdfr default: 158927446Sdfr error = EIO; 159029653Sdyson zfree(namei_zone, cp); 159127446Sdfr goto out; 159227446Sdfr } 159327446Sdfr } 159427446Sdfr /* 159527446Sdfr * Translate the '%' escapes, URL-style. 159627446Sdfr */ 159727446Sdfr while (*fromcp != '\0') { 159827446Sdfr if (*fromcp == WEBNFS_ESC_CHAR) { 159927446Sdfr if (fromcp[1] != '\0' && fromcp[2] != '\0') { 160027446Sdfr fromcp++; 160127446Sdfr *tocp++ = HEXSTRTOI(fromcp); 160227446Sdfr fromcp += 2; 160327446Sdfr continue; 160427446Sdfr } else { 160527446Sdfr error = ENOENT; 160629653Sdyson zfree(namei_zone, cp); 160727446Sdfr goto out; 160827446Sdfr } 160927446Sdfr } else 161027446Sdfr *tocp++ = *fromcp++; 161127446Sdfr } 161227446Sdfr *tocp = '\0'; 161329653Sdyson zfree(namei_zone, cnp->cn_pnbuf); 161427446Sdfr cnp->cn_pnbuf = cp; 161527446Sdfr } 161627446Sdfr 161727446Sdfr ndp->ni_pathlen = (tocp - cnp->cn_pnbuf) + 1; 161827446Sdfr ndp->ni_segflg = UIO_SYSSPACE; 161927446Sdfr 162027446Sdfr if (pubflag) { 162127446Sdfr ndp->ni_rootdir = rootvnode; 162227446Sdfr ndp->ni_loopcnt = 0; 162327446Sdfr if (cnp->cn_pnbuf[0] == '/') 162427446Sdfr dp = rootvnode; 162527446Sdfr } else { 162627609Sdfr cnp->cn_flags |= NOCROSSMOUNT; 162727446Sdfr } 162827446Sdfr 162948125Sjulian /* 163048125Sjulian * Initialize for scan, set ni_startdir and bump ref on dp again 163148125Sjulian * becuase lookup() will dereference ni_startdir. 163248125Sjulian */ 163348125Sjulian 163427446Sdfr cnp->cn_proc = p; 16359336Sdfr VREF(dp); 163648125Sjulian ndp->ni_startdir = dp; 163727446Sdfr 163848125Sjulian for (;;) { 163948125Sjulian cnp->cn_nameptr = cnp->cn_pnbuf; 164048125Sjulian /* 164148125Sjulian * Call lookup() to do the real work. If an error occurs, 164248125Sjulian * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 164348125Sjulian * we do not have to dereference anything before returning. 164448125Sjulian * In either case ni_startdir will be dereferenced and NULLed 164548125Sjulian * out. 164648125Sjulian */ 164748125Sjulian error = lookup(ndp); 164848125Sjulian if (error) 164948125Sjulian break; 165048125Sjulian 165148125Sjulian /* 165248125Sjulian * Check for encountering a symbolic link. Trivial 165348125Sjulian * termination occurs if no symlink encountered. 165448125Sjulian * Note: zfree is safe because error is 0, so we will 165548125Sjulian * not zfree it again when we break. 165648125Sjulian */ 165748125Sjulian if ((cnp->cn_flags & ISSYMLINK) == 0) { 165848125Sjulian nfsrv_object_create(ndp->ni_vp); 165948125Sjulian if (cnp->cn_flags & (SAVENAME | SAVESTART)) 166048125Sjulian cnp->cn_flags |= HASBUF; 166148125Sjulian else 166248125Sjulian zfree(namei_zone, cnp->cn_pnbuf); 166348125Sjulian break; 166427446Sdfr } 166548125Sjulian 166648125Sjulian /* 166748125Sjulian * Validate symlink 166848125Sjulian */ 16691541Srgrimes if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 167027446Sdfr VOP_UNLOCK(ndp->ni_dvp, 0, p); 167127446Sdfr if (!pubflag) { 167227446Sdfr error = EINVAL; 167348125Sjulian goto badlink2; 167427446Sdfr } 167527446Sdfr 167627446Sdfr if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 167727446Sdfr error = ELOOP; 167848125Sjulian goto badlink2; 167927446Sdfr } 168027609Sdfr if (ndp->ni_pathlen > 1) 168129653Sdyson cp = zalloc(namei_zone); 16821541Srgrimes else 168327446Sdfr cp = cnp->cn_pnbuf; 168427446Sdfr aiov.iov_base = cp; 168527446Sdfr aiov.iov_len = MAXPATHLEN; 168627446Sdfr auio.uio_iov = &aiov; 168727446Sdfr auio.uio_iovcnt = 1; 168827446Sdfr auio.uio_offset = 0; 168927446Sdfr auio.uio_rw = UIO_READ; 169027446Sdfr auio.uio_segflg = UIO_SYSSPACE; 169127446Sdfr auio.uio_procp = (struct proc *)0; 169227446Sdfr auio.uio_resid = MAXPATHLEN; 169327446Sdfr error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 169427446Sdfr if (error) { 169548125Sjulian badlink1: 169627446Sdfr if (ndp->ni_pathlen > 1) 169729653Sdyson zfree(namei_zone, cp); 169848125Sjulian badlink2: 169948125Sjulian vrele(ndp->ni_dvp); 170048125Sjulian vput(ndp->ni_vp); 170127446Sdfr break; 170227446Sdfr } 170327446Sdfr linklen = MAXPATHLEN - auio.uio_resid; 170427446Sdfr if (linklen == 0) { 170527446Sdfr error = ENOENT; 170648125Sjulian goto badlink1; 170727446Sdfr } 170827446Sdfr if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 170927446Sdfr error = ENAMETOOLONG; 171048125Sjulian goto badlink1; 171127446Sdfr } 171248125Sjulian 171348125Sjulian /* 171448125Sjulian * Adjust or replace path 171548125Sjulian */ 171627446Sdfr if (ndp->ni_pathlen > 1) { 171727446Sdfr bcopy(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 171829653Sdyson zfree(namei_zone, cnp->cn_pnbuf); 171927446Sdfr cnp->cn_pnbuf = cp; 172027446Sdfr } else 172127446Sdfr cnp->cn_pnbuf[linklen] = '\0'; 172227446Sdfr ndp->ni_pathlen += linklen; 172348125Sjulian 172427446Sdfr /* 172548125Sjulian * Cleanup refs for next loop and check if root directory 172648125Sjulian * should replace current directory. Normally ni_dvp 172748125Sjulian * becomes the new base directory and is cleaned up when 172848125Sjulian * we loop. Explicitly null pointers after invalidation 172948125Sjulian * to clarify operation. 173027446Sdfr */ 173148125Sjulian vput(ndp->ni_vp); 173248125Sjulian ndp->ni_vp = NULL; 173348125Sjulian 173427446Sdfr if (cnp->cn_pnbuf[0] == '/') { 173548125Sjulian vrele(ndp->ni_dvp); 173648125Sjulian ndp->ni_dvp = ndp->ni_rootdir; 173748125Sjulian VREF(ndp->ni_dvp); 173827446Sdfr } 173948125Sjulian ndp->ni_startdir = ndp->ni_dvp; 174048125Sjulian ndp->ni_dvp = NULL; 17411541Srgrimes } 174248125Sjulian 174348125Sjulian /* 174448125Sjulian * nfs_namei() guarentees that fields will not contain garbage 174548125Sjulian * whether an error occurs or not. This allows the caller to track 174648125Sjulian * cleanup state trivially. 174748125Sjulian */ 17481541Srgrimesout: 174948125Sjulian if (error) { 175048125Sjulian zfree(namei_zone, cnp->cn_pnbuf); 175148125Sjulian ndp->ni_vp = NULL; 175248125Sjulian ndp->ni_dvp = NULL; 175348125Sjulian ndp->ni_startdir = NULL; 175448125Sjulian cnp->cn_flags &= ~HASBUF; 175548125Sjulian } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 175648125Sjulian ndp->ni_dvp = NULL; 175748125Sjulian } 17581541Srgrimes return (error); 17591541Srgrimes} 17601541Srgrimes 17611541Srgrimes/* 17621541Srgrimes * A fiddled version of m_adj() that ensures null fill to a long 17631541Srgrimes * boundary and only trims off the back end 17641541Srgrimes */ 17651541Srgrimesvoid 17661541Srgrimesnfsm_adj(mp, len, nul) 17671541Srgrimes struct mbuf *mp; 17681541Srgrimes register int len; 17691541Srgrimes int nul; 17701541Srgrimes{ 17711541Srgrimes register struct mbuf *m; 17721541Srgrimes register int count, i; 17731541Srgrimes register char *cp; 17741541Srgrimes 17751541Srgrimes /* 17761541Srgrimes * Trim from tail. Scan the mbuf chain, 17771541Srgrimes * calculating its length and finding the last mbuf. 17781541Srgrimes * If the adjustment only affects this mbuf, then just 17791541Srgrimes * adjust and return. Otherwise, rescan and truncate 17801541Srgrimes * after the remaining size. 17811541Srgrimes */ 17821541Srgrimes count = 0; 17831541Srgrimes m = mp; 17841541Srgrimes for (;;) { 17851541Srgrimes count += m->m_len; 17861541Srgrimes if (m->m_next == (struct mbuf *)0) 17871541Srgrimes break; 17881541Srgrimes m = m->m_next; 17891541Srgrimes } 17901541Srgrimes if (m->m_len > len) { 17911541Srgrimes m->m_len -= len; 17921541Srgrimes if (nul > 0) { 17931541Srgrimes cp = mtod(m, caddr_t)+m->m_len-nul; 17941541Srgrimes for (i = 0; i < nul; i++) 17951541Srgrimes *cp++ = '\0'; 17961541Srgrimes } 17971541Srgrimes return; 17981541Srgrimes } 17991541Srgrimes count -= len; 18001541Srgrimes if (count < 0) 18011541Srgrimes count = 0; 18021541Srgrimes /* 18031541Srgrimes * Correct length for chain is "count". 18041541Srgrimes * Find the mbuf with last data, adjust its length, 18051541Srgrimes * and toss data from remaining mbufs on chain. 18061541Srgrimes */ 18071541Srgrimes for (m = mp; m; m = m->m_next) { 18081541Srgrimes if (m->m_len >= count) { 18091541Srgrimes m->m_len = count; 18101541Srgrimes if (nul > 0) { 18111541Srgrimes cp = mtod(m, caddr_t)+m->m_len-nul; 18121541Srgrimes for (i = 0; i < nul; i++) 18131541Srgrimes *cp++ = '\0'; 18141541Srgrimes } 18151541Srgrimes break; 18161541Srgrimes } 18171541Srgrimes count -= m->m_len; 18181541Srgrimes } 18193305Sphk for (m = m->m_next;m;m = m->m_next) 18201541Srgrimes m->m_len = 0; 18211541Srgrimes} 18221541Srgrimes 18231541Srgrimes/* 18249336Sdfr * Make these functions instead of macros, so that the kernel text size 18259336Sdfr * doesn't get too big... 18269336Sdfr */ 18279336Sdfrvoid 18289336Sdfrnfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 18299336Sdfr struct nfsrv_descript *nfsd; 18309336Sdfr int before_ret; 18319336Sdfr register struct vattr *before_vap; 18329336Sdfr int after_ret; 18339336Sdfr struct vattr *after_vap; 18349336Sdfr struct mbuf **mbp; 18359336Sdfr char **bposp; 18369336Sdfr{ 18379336Sdfr register struct mbuf *mb = *mbp, *mb2; 18389336Sdfr register char *bpos = *bposp; 183936541Speter register u_int32_t *tl; 18409336Sdfr 18419336Sdfr if (before_ret) { 184236541Speter nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 18439336Sdfr *tl = nfs_false; 18449336Sdfr } else { 184536541Speter nfsm_build(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 18469336Sdfr *tl++ = nfs_true; 184747751Speter txdr_hyper(before_vap->va_size, tl); 18489336Sdfr tl += 2; 18499336Sdfr txdr_nfsv3time(&(before_vap->va_mtime), tl); 18509336Sdfr tl += 2; 18519336Sdfr txdr_nfsv3time(&(before_vap->va_ctime), tl); 18529336Sdfr } 18539336Sdfr *bposp = bpos; 18549336Sdfr *mbp = mb; 18559336Sdfr nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 18569336Sdfr} 18579336Sdfr 18589336Sdfrvoid 18599336Sdfrnfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 18609336Sdfr struct nfsrv_descript *nfsd; 18619336Sdfr int after_ret; 18629336Sdfr struct vattr *after_vap; 18639336Sdfr struct mbuf **mbp; 18649336Sdfr char **bposp; 18659336Sdfr{ 18669336Sdfr register struct mbuf *mb = *mbp, *mb2; 18679336Sdfr register char *bpos = *bposp; 186836541Speter register u_int32_t *tl; 18699336Sdfr register struct nfs_fattr *fp; 18709336Sdfr 18719336Sdfr if (after_ret) { 187236541Speter nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED); 18739336Sdfr *tl = nfs_false; 18749336Sdfr } else { 187536541Speter nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_V3FATTR); 18769336Sdfr *tl++ = nfs_true; 18779336Sdfr fp = (struct nfs_fattr *)tl; 18789336Sdfr nfsm_srvfattr(nfsd, after_vap, fp); 18799336Sdfr } 18809336Sdfr *mbp = mb; 18819336Sdfr *bposp = bpos; 18829336Sdfr} 18839336Sdfr 18849336Sdfrvoid 18859336Sdfrnfsm_srvfattr(nfsd, vap, fp) 18869336Sdfr register struct nfsrv_descript *nfsd; 18879336Sdfr register struct vattr *vap; 18889336Sdfr register struct nfs_fattr *fp; 18899336Sdfr{ 18909336Sdfr 18919336Sdfr fp->fa_nlink = txdr_unsigned(vap->va_nlink); 18929336Sdfr fp->fa_uid = txdr_unsigned(vap->va_uid); 18939336Sdfr fp->fa_gid = txdr_unsigned(vap->va_gid); 18949336Sdfr if (nfsd->nd_flag & ND_NFSV3) { 18959336Sdfr fp->fa_type = vtonfsv3_type(vap->va_type); 18969336Sdfr fp->fa_mode = vtonfsv3_mode(vap->va_mode); 189747751Speter txdr_hyper(vap->va_size, &fp->fa3_size); 189847751Speter txdr_hyper(vap->va_bytes, &fp->fa3_used); 189947028Sphk fp->fa3_rdev.specdata1 = txdr_unsigned(umajor(vap->va_rdev)); 190047028Sphk fp->fa3_rdev.specdata2 = txdr_unsigned(uminor(vap->va_rdev)); 19019336Sdfr fp->fa3_fsid.nfsuquad[0] = 0; 19029336Sdfr fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 19039336Sdfr fp->fa3_fileid.nfsuquad[0] = 0; 19049336Sdfr fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid); 19059336Sdfr txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 19069336Sdfr txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 19079336Sdfr txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 19089336Sdfr } else { 19099336Sdfr fp->fa_type = vtonfsv2_type(vap->va_type); 19109336Sdfr fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 19119336Sdfr fp->fa2_size = txdr_unsigned(vap->va_size); 19129336Sdfr fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 19139336Sdfr if (vap->va_type == VFIFO) 19149336Sdfr fp->fa2_rdev = 0xffffffff; 19159336Sdfr else 19169336Sdfr fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 19179336Sdfr fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 19189336Sdfr fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 19199336Sdfr fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 19209336Sdfr txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 19219336Sdfr txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 19229336Sdfr txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 19239336Sdfr } 19249336Sdfr} 19259336Sdfr 19269336Sdfr/* 19271541Srgrimes * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 19281541Srgrimes * - look up fsid in mount list (if not found ret error) 19291541Srgrimes * - get vp and export rights by calling VFS_FHTOVP() 19301541Srgrimes * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 19311541Srgrimes * - if not lockflag unlock it with VOP_UNLOCK() 19321541Srgrimes */ 19331549Srgrimesint 193427446Sdfrnfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag, pubflag) 19351541Srgrimes fhandle_t *fhp; 19361541Srgrimes int lockflag; 19371541Srgrimes struct vnode **vpp; 19381541Srgrimes struct ucred *cred; 19391541Srgrimes struct nfssvc_sock *slp; 194028270Swollman struct sockaddr *nam; 19411541Srgrimes int *rdonlyp; 19429336Sdfr int kerbflag; 194327446Sdfr int pubflag; 19441541Srgrimes{ 194522521Sdyson struct proc *p = curproc; /* XXX */ 19461541Srgrimes register struct mount *mp; 19471541Srgrimes register int i; 19481541Srgrimes struct ucred *credanon; 19491541Srgrimes int error, exflags; 195036534Speter#ifdef MNT_EXNORESPORT /* XXX needs mountd and /etc/exports help yet */ 195136534Speter struct sockaddr_int *saddr; 195236534Speter#endif 19531541Srgrimes 19541541Srgrimes *vpp = (struct vnode *)0; 195527446Sdfr 195627446Sdfr if (nfs_ispublicfh(fhp)) { 195727446Sdfr if (!pubflag || !nfs_pub.np_valid) 195827446Sdfr return (ESTALE); 195927446Sdfr fhp = &nfs_pub.np_handle; 196027446Sdfr } 196127446Sdfr 196222521Sdyson mp = vfs_getvfs(&fhp->fh_fsid); 19633305Sphk if (!mp) 19641541Srgrimes return (ESTALE); 196551138Salfred error = VFS_CHECKEXP(mp, nam, &exflags, &credanon); 19663305Sphk if (error) 196751138Salfred return (error); 196851138Salfred error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp); 196951138Salfred if (error) 19701541Srgrimes return (error); 197136534Speter#ifdef MNT_EXNORESPORT 197236534Speter if (!(exflags & (MNT_EXNORESPORT|MNT_EXPUBLIC))) { 197336534Speter saddr = (struct sockaddr_in *)nam; 197436534Speter if (saddr->sin_family == AF_INET && 197536534Speter ntohs(saddr->sin_port) >= IPPORT_RESERVED) { 197636534Speter vput(*vpp); 197754485Sdillon *vpp = NULL; 197836534Speter return (NFSERR_AUTHERR | AUTH_TOOWEAK); 197936534Speter } 198036534Speter } 198136534Speter#endif 19821541Srgrimes /* 19831541Srgrimes * Check/setup credentials. 19841541Srgrimes */ 19851541Srgrimes if (exflags & MNT_EXKERB) { 19869336Sdfr if (!kerbflag) { 19871541Srgrimes vput(*vpp); 198854485Sdillon *vpp = NULL; 19899336Sdfr return (NFSERR_AUTHERR | AUTH_TOOWEAK); 19901541Srgrimes } 19919336Sdfr } else if (kerbflag) { 19929336Sdfr vput(*vpp); 199354485Sdillon *vpp = NULL; 19949336Sdfr return (NFSERR_AUTHERR | AUTH_TOOWEAK); 19951541Srgrimes } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) { 19961541Srgrimes cred->cr_uid = credanon->cr_uid; 19971541Srgrimes for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 19981541Srgrimes cred->cr_groups[i] = credanon->cr_groups[i]; 19993664Sphk cred->cr_ngroups = i; 20001541Srgrimes } 20011541Srgrimes if (exflags & MNT_EXRDONLY) 20021541Srgrimes *rdonlyp = 1; 20031541Srgrimes else 20041541Srgrimes *rdonlyp = 0; 20057969Sdyson 200617761Sdyson nfsrv_object_create(*vpp); 20077969Sdyson 20081541Srgrimes if (!lockflag) 200922521Sdyson VOP_UNLOCK(*vpp, 0, p); 20101541Srgrimes return (0); 20111541Srgrimes} 20121541Srgrimes 201327446Sdfr 201427446Sdfr/* 201527446Sdfr * WebNFS: check if a filehandle is a public filehandle. For v3, this 201627446Sdfr * means a length of 0, for v2 it means all zeroes. nfsm_srvmtofh has 201727446Sdfr * transformed this to all zeroes in both cases, so check for it. 201827446Sdfr */ 201927446Sdfrint 202027446Sdfrnfs_ispublicfh(fhp) 202127446Sdfr fhandle_t *fhp; 202227446Sdfr{ 202327446Sdfr char *cp = (char *)fhp; 202427446Sdfr int i; 202527446Sdfr 202627446Sdfr for (i = 0; i < NFSX_V3FH; i++) 202727446Sdfr if (*cp++ != 0) 202827446Sdfr return (FALSE); 202927446Sdfr return (TRUE); 203027446Sdfr} 203127446Sdfr 203213416Sphk#endif /* NFS_NOSERVER */ 20331541Srgrimes/* 20341541Srgrimes * This function compares two net addresses by family and returns TRUE 20351541Srgrimes * if they are the same host. 20361541Srgrimes * If there is any doubt, return FALSE. 20371541Srgrimes * The AF_INET family is handled as a special case so that address mbufs 20381541Srgrimes * don't need to be saved to store "struct in_addr", which is only 4 bytes. 20391541Srgrimes */ 20401549Srgrimesint 20411541Srgrimesnetaddr_match(family, haddr, nam) 20421541Srgrimes int family; 20431541Srgrimes union nethostaddr *haddr; 204428270Swollman struct sockaddr *nam; 20451541Srgrimes{ 20461541Srgrimes register struct sockaddr_in *inetaddr; 20471541Srgrimes 20481541Srgrimes switch (family) { 20491541Srgrimes case AF_INET: 205028270Swollman inetaddr = (struct sockaddr_in *)nam; 20511541Srgrimes if (inetaddr->sin_family == AF_INET && 20521541Srgrimes inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 20531541Srgrimes return (1); 20541541Srgrimes break; 20551541Srgrimes#ifdef ISO 20561541Srgrimes case AF_ISO: 20571541Srgrimes { 20581541Srgrimes register struct sockaddr_iso *isoaddr1, *isoaddr2; 20591541Srgrimes 206028270Swollman isoaddr1 = (struct sockaddr_iso *)nam; 206128270Swollman isoaddr2 = (struct sockaddr_iso *)haddr->had_nam; 20621541Srgrimes if (isoaddr1->siso_family == AF_ISO && 20631541Srgrimes isoaddr1->siso_nlen > 0 && 20641541Srgrimes isoaddr1->siso_nlen == isoaddr2->siso_nlen && 20651541Srgrimes SAME_ISOADDR(isoaddr1, isoaddr2)) 20661541Srgrimes return (1); 20671541Srgrimes break; 20681541Srgrimes } 20691541Srgrimes#endif /* ISO */ 20701541Srgrimes default: 20711541Srgrimes break; 20721541Srgrimes }; 20731541Srgrimes return (0); 20741541Srgrimes} 20755455Sdg 207643305Sdillonstatic nfsuint64 nfs_nullcookie = { { 0, 0 } }; 20779336Sdfr/* 20789336Sdfr * This function finds the directory cookie that corresponds to the 20799336Sdfr * logical byte offset given. 20809336Sdfr */ 20819336Sdfrnfsuint64 * 20829336Sdfrnfs_getcookie(np, off, add) 20839336Sdfr register struct nfsnode *np; 20849336Sdfr off_t off; 20859336Sdfr int add; 20869336Sdfr{ 20879336Sdfr register struct nfsdmap *dp, *dp2; 20889336Sdfr register int pos; 20899336Sdfr 209036979Sbde pos = (uoff_t)off / NFS_DIRBLKSIZ; 209136979Sbde if (pos == 0 || off < 0) { 20929336Sdfr#ifdef DIAGNOSTIC 20939336Sdfr if (add) 209436979Sbde panic("nfs getcookie add at <= 0"); 20959336Sdfr#endif 20969336Sdfr return (&nfs_nullcookie); 20979336Sdfr } 20989336Sdfr pos--; 20999336Sdfr dp = np->n_cookies.lh_first; 21009336Sdfr if (!dp) { 21019336Sdfr if (add) { 21029336Sdfr MALLOC(dp, struct nfsdmap *, sizeof (struct nfsdmap), 21039336Sdfr M_NFSDIROFF, M_WAITOK); 21049336Sdfr dp->ndm_eocookie = 0; 21059336Sdfr LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list); 21069336Sdfr } else 21079336Sdfr return ((nfsuint64 *)0); 21089336Sdfr } 21099336Sdfr while (pos >= NFSNUMCOOKIES) { 21109336Sdfr pos -= NFSNUMCOOKIES; 21119336Sdfr if (dp->ndm_list.le_next) { 21129336Sdfr if (!add && dp->ndm_eocookie < NFSNUMCOOKIES && 21139336Sdfr pos >= dp->ndm_eocookie) 21149336Sdfr return ((nfsuint64 *)0); 21159336Sdfr dp = dp->ndm_list.le_next; 21169336Sdfr } else if (add) { 21179336Sdfr MALLOC(dp2, struct nfsdmap *, sizeof (struct nfsdmap), 21189336Sdfr M_NFSDIROFF, M_WAITOK); 21199336Sdfr dp2->ndm_eocookie = 0; 21209336Sdfr LIST_INSERT_AFTER(dp, dp2, ndm_list); 21219336Sdfr dp = dp2; 21229336Sdfr } else 21239336Sdfr return ((nfsuint64 *)0); 21249336Sdfr } 21259336Sdfr if (pos >= dp->ndm_eocookie) { 21269336Sdfr if (add) 21279336Sdfr dp->ndm_eocookie = pos + 1; 21289336Sdfr else 21299336Sdfr return ((nfsuint64 *)0); 21309336Sdfr } 21319336Sdfr return (&dp->ndm_cookies[pos]); 21329336Sdfr} 21339336Sdfr 21349336Sdfr/* 21359336Sdfr * Invalidate cached directory information, except for the actual directory 21369336Sdfr * blocks (which are invalidated separately). 21379336Sdfr * Done mainly to avoid the use of stale offset cookies. 21389336Sdfr */ 21399336Sdfrvoid 21409336Sdfrnfs_invaldir(vp) 21419336Sdfr register struct vnode *vp; 21429336Sdfr{ 21439336Sdfr register struct nfsnode *np = VTONFS(vp); 21449336Sdfr 21459336Sdfr#ifdef DIAGNOSTIC 21469336Sdfr if (vp->v_type != VDIR) 21479336Sdfr panic("nfs: invaldir not dir"); 21489336Sdfr#endif 21499336Sdfr np->n_direofoffset = 0; 21509336Sdfr np->n_cookieverf.nfsuquad[0] = 0; 21519336Sdfr np->n_cookieverf.nfsuquad[1] = 0; 21529336Sdfr if (np->n_cookies.lh_first) 21539336Sdfr np->n_cookies.lh_first->ndm_eocookie = 0; 21549336Sdfr} 21559336Sdfr 21569336Sdfr/* 21579336Sdfr * The write verifier has changed (probably due to a server reboot), so all 21589336Sdfr * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 21599336Sdfr * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 216054480Sdillon * and B_CLUSTEROK flags. Once done the new write verifier can be set for the 216154480Sdillon * mount point. 216254480Sdillon * 216354480Sdillon * B_CLUSTEROK must be cleared along with B_NEEDCOMMIT because stage 1 data 216454480Sdillon * writes are not clusterable. 21659336Sdfr */ 21669336Sdfrvoid 21679336Sdfrnfs_clearcommit(mp) 21689336Sdfr struct mount *mp; 21699336Sdfr{ 21709336Sdfr register struct vnode *vp, *nvp; 21719336Sdfr register struct buf *bp, *nbp; 21729336Sdfr int s; 21739336Sdfr 21749336Sdfr s = splbio(); 21759336Sdfrloop: 21769336Sdfr for (vp = mp->mnt_vnodelist.lh_first; vp; vp = nvp) { 21779336Sdfr if (vp->v_mount != mp) /* Paranoia */ 21789336Sdfr goto loop; 21799336Sdfr nvp = vp->v_mntvnodes.le_next; 218040790Speter for (bp = TAILQ_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) { 218140790Speter nbp = TAILQ_NEXT(bp, b_vnbufs); 218248225Smckusick if (BUF_REFCNT(bp) == 0 && 218348225Smckusick (bp->b_flags & (B_DELWRI | B_NEEDCOMMIT)) 21849336Sdfr == (B_DELWRI | B_NEEDCOMMIT)) 218554480Sdillon bp->b_flags &= ~(B_NEEDCOMMIT | B_CLUSTEROK); 21869336Sdfr } 21879336Sdfr } 21889336Sdfr splx(s); 21899336Sdfr} 21909336Sdfr 219113416Sphk#ifndef NFS_NOSERVER 21929336Sdfr/* 21939336Sdfr * Map errnos to NFS error numbers. For Version 3 also filter out error 21949336Sdfr * numbers not specified for the associated procedure. 21959336Sdfr */ 21965455Sdgint 21979336Sdfrnfsrv_errmap(nd, err) 21989336Sdfr struct nfsrv_descript *nd; 21999336Sdfr register int err; 22009336Sdfr{ 22019336Sdfr register short *defaulterrp, *errp; 22029336Sdfr 22039336Sdfr if (nd->nd_flag & ND_NFSV3) { 22049336Sdfr if (nd->nd_procnum <= NFSPROC_COMMIT) { 22059336Sdfr errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 22069336Sdfr while (*++errp) { 22079336Sdfr if (*errp == err) 22089336Sdfr return (err); 22099336Sdfr else if (*errp > err) 22109336Sdfr break; 22119336Sdfr } 22129336Sdfr return ((int)*defaulterrp); 22139336Sdfr } else 22149336Sdfr return (err & 0xffff); 22159336Sdfr } 22169336Sdfr if (err <= ELAST) 22179336Sdfr return ((int)nfsrv_v2errmap[err - 1]); 22189336Sdfr return (NFSERR_IO); 22199336Sdfr} 22209336Sdfr 22219336Sdfrint 222231886Sbdenfsrv_object_create(vp) 222331886Sbde struct vnode *vp; 222431886Sbde{ 22255455Sdg 222631886Sbde if (vp == NULL || vp->v_type != VREG) 222731886Sbde return (1); 222831886Sbde return (vfs_object_create(vp, curproc, 222942315Seivind curproc ? curproc->p_ucred : NULL)); 22305455Sdg} 223136503Speter 223236503Speter/* 223336503Speter * Sort the group list in increasing numerical order. 223436503Speter * (Insertion sort by Chris Torek, who was grossed out by the bubble sort 223536503Speter * that used to be here.) 223636503Speter */ 223736503Spetervoid 223836503Speternfsrvw_sort(list, num) 223936503Speter register gid_t *list; 224036503Speter register int num; 224136503Speter{ 224236503Speter register int i, j; 224336503Speter gid_t v; 224436503Speter 224536503Speter /* Insertion sort. */ 224636503Speter for (i = 1; i < num; i++) { 224736503Speter v = list[i]; 224836503Speter /* find correct slot for value v, moving others up */ 224936503Speter for (j = i; --j >= 0 && v < list[j];) 225036503Speter list[j + 1] = list[j]; 225136503Speter list[j + 1] = v; 225236503Speter } 225336503Speter} 225436503Speter 225536503Speter/* 225636503Speter * copy credentials making sure that the result can be compared with bcmp(). 225736503Speter */ 225836503Spetervoid 225936503Speternfsrv_setcred(incred, outcred) 226036503Speter register struct ucred *incred, *outcred; 226136503Speter{ 226236503Speter register int i; 226336503Speter 226436503Speter bzero((caddr_t)outcred, sizeof (struct ucred)); 226536503Speter outcred->cr_ref = 1; 226636503Speter outcred->cr_uid = incred->cr_uid; 226736503Speter outcred->cr_ngroups = incred->cr_ngroups; 226836503Speter for (i = 0; i < incred->cr_ngroups; i++) 226936503Speter outcred->cr_groups[i] = incred->cr_groups[i]; 227036503Speter nfsrvw_sort(outcred->cr_groups, outcred->cr_ngroups); 227136503Speter} 227213416Sphk#endif /* NFS_NOSERVER */ 2273