nfs_subs.c revision 196205
1139823Simp/*- 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 * 4. Neither the name of the University nor the names of its contributors 171541Srgrimes * may be used to endorse or promote products derived from this software 181541Srgrimes * without specific prior written permission. 191541Srgrimes * 201541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 211541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 221541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 231541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 241541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 251541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 261541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 271541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 281541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 291541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 301541Srgrimes * SUCH DAMAGE. 311541Srgrimes * 3236503Speter * @(#)nfs_subs.c 8.8 (Berkeley) 5/22/95 331541Srgrimes */ 341541Srgrimes 3583651Speter#include <sys/cdefs.h> 3683651Speter__FBSDID("$FreeBSD: head/sys/nfsclient/nfs_subs.c 196205 2009-08-14 10:59:17Z kib $"); 3783651Speter 381541Srgrimes/* 391541Srgrimes * These functions support the macros and help fiddle mbuf chains for 401541Srgrimes * the nfs op functions. They do things like create the rpc header and 411541Srgrimes * copy data between mbuf chains and uio lists. 421541Srgrimes */ 4383651Speter 44190380Srwatson#include "opt_kdtrace.h" 45190380Srwatson 461541Srgrimes#include <sys/param.h> 4748274Speter#include <sys/systm.h> 4848274Speter#include <sys/kernel.h> 4960041Sphk#include <sys/bio.h> 5031886Sbde#include <sys/buf.h> 511541Srgrimes#include <sys/proc.h> 521541Srgrimes#include <sys/mount.h> 531541Srgrimes#include <sys/vnode.h> 541541Srgrimes#include <sys/namei.h> 551541Srgrimes#include <sys/mbuf.h> 561541Srgrimes#include <sys/socket.h> 571541Srgrimes#include <sys/stat.h> 589336Sdfr#include <sys/malloc.h> 592997Swollman#include <sys/sysent.h> 602997Swollman#include <sys/syscall.h> 6183651Speter#include <sys/sysproto.h> 621541Srgrimes 633305Sphk#include <vm/vm.h> 6412662Sdg#include <vm/vm_object.h> 6512662Sdg#include <vm/vm_extern.h> 6692783Sjeff#include <vm/uma.h> 673305Sphk 689336Sdfr#include <nfs/nfsproto.h> 6983651Speter#include <nfsclient/nfs.h> 7083651Speter#include <nfsclient/nfsnode.h> 71190380Srwatson#include <nfsclient/nfs_kdtrace.h> 721541Srgrimes#include <nfs/xdr_subs.h> 7383651Speter#include <nfsclient/nfsm_subs.h> 7483651Speter#include <nfsclient/nfsmount.h> 751541Srgrimes 761541Srgrimes#include <netinet/in.h> 771541Srgrimes 781541Srgrimes/* 79158739Smohans * Note that stdarg.h and the ANSI style va_start macro is used for both 80158739Smohans * ANSI and traditional C compilers. 81158739Smohans */ 82158739Smohans#include <machine/stdarg.h> 83158739Smohans 84190380Srwatson#ifdef KDTRACE_HOOKS 85190380Srwatsondtrace_nfsclient_attrcache_flush_probe_func_t 86190380Srwatson dtrace_nfsclient_attrcache_flush_done_probe; 87190380Srwatsonuint32_t nfsclient_attrcache_flush_done_id; 88190380Srwatson 89190380Srwatsondtrace_nfsclient_attrcache_get_hit_probe_func_t 90190380Srwatson dtrace_nfsclient_attrcache_get_hit_probe; 91190380Srwatsonuint32_t nfsclient_attrcache_get_hit_id; 92190380Srwatson 93190380Srwatsondtrace_nfsclient_attrcache_get_miss_probe_func_t 94190380Srwatson dtrace_nfsclient_attrcache_get_miss_probe; 95190380Srwatsonuint32_t nfsclient_attrcache_get_miss_id; 96190380Srwatson 97190380Srwatsondtrace_nfsclient_attrcache_load_probe_func_t 98190380Srwatson dtrace_nfsclient_attrcache_load_done_probe; 99190380Srwatsonuint32_t nfsclient_attrcache_load_done_id; 100190380Srwatson#endif /* !KDTRACE_HOOKS */ 101190380Srwatson 102158739Smohans/* 1031541Srgrimes * Data items converted to xdr at startup, since they are constant 1041541Srgrimes * This is kinda hokey, but may save a little time doing byte swaps 1051541Srgrimes */ 10683651Speteru_int32_t nfs_xdrneg1; 10783651Speteru_int32_t nfs_true, nfs_false; 1081541Srgrimes 1091541Srgrimes/* And other global data */ 110176224Sjhbstatic u_int32_t nfs_xid = 0; 11112911Sphkstatic enum vtype nv2tov_type[8]= { 11283651Speter VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON 11312911Sphk}; 11412911Sphk 11583651Speterint nfs_ticks; 11683651Speterint nfs_pbuf_freecnt = -1; /* start out unlimited */ 1179336Sdfr 11883651Speterstruct nfs_bufq nfs_bufq; 119176224Sjhbstatic struct mtx nfs_xid_mtx; 1209759Sbde 1219336Sdfr/* 1229336Sdfr * and the reverse mapping from generic to Version 2 procedure numbers 1239336Sdfr */ 1249336Sdfrint nfsv2_procid[NFS_NPROCS] = { 1259336Sdfr NFSV2PROC_NULL, 1269336Sdfr NFSV2PROC_GETATTR, 1279336Sdfr NFSV2PROC_SETATTR, 1289336Sdfr NFSV2PROC_LOOKUP, 1299336Sdfr NFSV2PROC_NOOP, 1309336Sdfr NFSV2PROC_READLINK, 1319336Sdfr NFSV2PROC_READ, 1329336Sdfr NFSV2PROC_WRITE, 1339336Sdfr NFSV2PROC_CREATE, 1349336Sdfr NFSV2PROC_MKDIR, 1359336Sdfr NFSV2PROC_SYMLINK, 1369336Sdfr NFSV2PROC_CREATE, 1379336Sdfr NFSV2PROC_REMOVE, 1389336Sdfr NFSV2PROC_RMDIR, 1399336Sdfr NFSV2PROC_RENAME, 1409336Sdfr NFSV2PROC_LINK, 1419336Sdfr NFSV2PROC_READDIR, 1429336Sdfr NFSV2PROC_NOOP, 1439336Sdfr NFSV2PROC_STATFS, 1449336Sdfr NFSV2PROC_NOOP, 1459336Sdfr NFSV2PROC_NOOP, 1469336Sdfr NFSV2PROC_NOOP, 1479336Sdfr NFSV2PROC_NOOP, 1489336Sdfr}; 1499336Sdfr 15060938SjakeLIST_HEAD(nfsnodehashhead, nfsnode); 1513664Sphk 152176224Sjhbu_int32_t 153176224Sjhbnfs_xid_gen(void) 154176224Sjhb{ 155176224Sjhb uint32_t xid; 156176224Sjhb 157176224Sjhb mtx_lock(&nfs_xid_mtx); 158176224Sjhb 159176224Sjhb /* Get a pretty random xid to start with */ 160176224Sjhb if (!nfs_xid) 161176224Sjhb nfs_xid = random(); 162176224Sjhb /* 163176224Sjhb * Skip zero xid if it should ever happen. 164176224Sjhb */ 165176224Sjhb if (++nfs_xid == 0) 166176224Sjhb nfs_xid++; 167176224Sjhb xid = nfs_xid; 168176224Sjhb mtx_unlock(&nfs_xid_mtx); 169176224Sjhb return xid; 170176224Sjhb} 171176224Sjhb 1721541Srgrimes/* 1731541Srgrimes * Create the header for an rpc request packet 1741541Srgrimes * The hsiz is the size of the rest of the nfs request header. 1751541Srgrimes * (just used to decide if a cluster is a good idea) 1761541Srgrimes */ 1771541Srgrimesstruct mbuf * 17883651Speternfsm_reqhead(struct vnode *vp, u_long procid, int hsiz) 1791541Srgrimes{ 18083651Speter struct mbuf *mb; 1811541Srgrimes 182177599Sru MGET(mb, M_WAIT, MT_DATA); 1831541Srgrimes if (hsiz >= MINCLSIZE) 184177599Sru MCLGET(mb, M_WAIT); 1851541Srgrimes mb->m_len = 0; 1861541Srgrimes return (mb); 1871541Srgrimes} 1881541Srgrimes 1891541Srgrimes/* 19017186Sdfr * copies a uio scatter/gather list to an mbuf chain. 19117186Sdfr * NOTE: can ony handle iovcnt == 1 1921541Srgrimes */ 1931549Srgrimesint 19483651Speternfsm_uiotombuf(struct uio *uiop, struct mbuf **mq, int siz, caddr_t *bpos) 1951541Srgrimes{ 19683651Speter char *uiocp; 19783651Speter struct mbuf *mp, *mp2; 19883651Speter int xfer, left, mlen; 1991541Srgrimes int uiosiz, clflg, rem; 2001541Srgrimes char *cp; 2011541Srgrimes 20236519Speter#ifdef DIAGNOSTIC 20317186Sdfr if (uiop->uio_iovcnt != 1) 20417186Sdfr panic("nfsm_uiotombuf: iovcnt != 1"); 20536519Speter#endif 20617186Sdfr 2071541Srgrimes if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 2081541Srgrimes clflg = 1; 2091541Srgrimes else 2101541Srgrimes clflg = 0; 2111541Srgrimes rem = nfsm_rndup(siz)-siz; 2121541Srgrimes mp = mp2 = *mq; 2131541Srgrimes while (siz > 0) { 2141541Srgrimes left = uiop->uio_iov->iov_len; 2151541Srgrimes uiocp = uiop->uio_iov->iov_base; 2161541Srgrimes if (left > siz) 2171541Srgrimes left = siz; 2181541Srgrimes uiosiz = left; 2191541Srgrimes while (left > 0) { 2201541Srgrimes mlen = M_TRAILINGSPACE(mp); 2211541Srgrimes if (mlen == 0) { 222177599Sru MGET(mp, M_WAIT, MT_DATA); 2231541Srgrimes if (clflg) 224177599Sru MCLGET(mp, M_WAIT); 2251541Srgrimes mp->m_len = 0; 2261541Srgrimes mp2->m_next = mp; 2271541Srgrimes mp2 = mp; 2281541Srgrimes mlen = M_TRAILINGSPACE(mp); 2291541Srgrimes } 2301541Srgrimes xfer = (left > mlen) ? mlen : left; 2311541Srgrimes#ifdef notdef 2321541Srgrimes /* Not Yet.. */ 2331541Srgrimes if (uiop->uio_iov->iov_op != NULL) 2341541Srgrimes (*(uiop->uio_iov->iov_op)) 2351541Srgrimes (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 2361541Srgrimes else 2371541Srgrimes#endif 2381541Srgrimes if (uiop->uio_segflg == UIO_SYSSPACE) 2391541Srgrimes bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 2401541Srgrimes else 2411541Srgrimes copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 2421541Srgrimes mp->m_len += xfer; 2431541Srgrimes left -= xfer; 2441541Srgrimes uiocp += xfer; 2451541Srgrimes uiop->uio_offset += xfer; 2461541Srgrimes uiop->uio_resid -= xfer; 2471541Srgrimes } 248104908Smike uiop->uio_iov->iov_base = 249104908Smike (char *)uiop->uio_iov->iov_base + uiosiz; 25017186Sdfr uiop->uio_iov->iov_len -= uiosiz; 2511541Srgrimes siz -= uiosiz; 2521541Srgrimes } 2531541Srgrimes if (rem > 0) { 2541541Srgrimes if (rem > M_TRAILINGSPACE(mp)) { 255177599Sru MGET(mp, M_WAIT, MT_DATA); 2561541Srgrimes mp->m_len = 0; 2571541Srgrimes mp2->m_next = mp; 2581541Srgrimes } 2591541Srgrimes cp = mtod(mp, caddr_t)+mp->m_len; 2601541Srgrimes for (left = 0; left < rem; left++) 2611541Srgrimes *cp++ = '\0'; 2621541Srgrimes mp->m_len += rem; 2631541Srgrimes *bpos = cp; 2641541Srgrimes } else 2651541Srgrimes *bpos = mtod(mp, caddr_t)+mp->m_len; 2661541Srgrimes *mq = mp; 2671541Srgrimes return (0); 2681541Srgrimes} 2691541Srgrimes 2701541Srgrimes/* 2711541Srgrimes * Copy a string into mbufs for the hard cases... 2721541Srgrimes */ 2731549Srgrimesint 27483651Speternfsm_strtmbuf(struct mbuf **mb, char **bpos, const char *cp, long siz) 2751541Srgrimes{ 27683651Speter struct mbuf *m1 = NULL, *m2; 2771541Srgrimes long left, xfer, len, tlen; 27836541Speter u_int32_t *tl; 2791541Srgrimes int putsize; 2801541Srgrimes 2811541Srgrimes putsize = 1; 2821541Srgrimes m2 = *mb; 2831541Srgrimes left = M_TRAILINGSPACE(m2); 2841541Srgrimes if (left > 0) { 28536541Speter tl = ((u_int32_t *)(*bpos)); 2861541Srgrimes *tl++ = txdr_unsigned(siz); 2871541Srgrimes putsize = 0; 2881541Srgrimes left -= NFSX_UNSIGNED; 2891541Srgrimes m2->m_len += NFSX_UNSIGNED; 2901541Srgrimes if (left > 0) { 2911541Srgrimes bcopy(cp, (caddr_t) tl, left); 2921541Srgrimes siz -= left; 2931541Srgrimes cp += left; 2941541Srgrimes m2->m_len += left; 2951541Srgrimes left = 0; 2961541Srgrimes } 2971541Srgrimes } 2981541Srgrimes /* Loop around adding mbufs */ 2991541Srgrimes while (siz > 0) { 300177599Sru MGET(m1, M_WAIT, MT_DATA); 3011541Srgrimes if (siz > MLEN) 302177599Sru MCLGET(m1, M_WAIT); 3031541Srgrimes m1->m_len = NFSMSIZ(m1); 3041541Srgrimes m2->m_next = m1; 3051541Srgrimes m2 = m1; 30636541Speter tl = mtod(m1, u_int32_t *); 3071541Srgrimes tlen = 0; 3081541Srgrimes if (putsize) { 3091541Srgrimes *tl++ = txdr_unsigned(siz); 3101541Srgrimes m1->m_len -= NFSX_UNSIGNED; 3111541Srgrimes tlen = NFSX_UNSIGNED; 3121541Srgrimes putsize = 0; 3131541Srgrimes } 3141541Srgrimes if (siz < m1->m_len) { 3151541Srgrimes len = nfsm_rndup(siz); 3161541Srgrimes xfer = siz; 3171541Srgrimes if (xfer < len) 3181541Srgrimes *(tl+(xfer>>2)) = 0; 3191541Srgrimes } else { 3201541Srgrimes xfer = len = m1->m_len; 3211541Srgrimes } 3221541Srgrimes bcopy(cp, (caddr_t) tl, xfer); 3231541Srgrimes m1->m_len = len+tlen; 3241541Srgrimes siz -= xfer; 3251541Srgrimes cp += xfer; 3261541Srgrimes } 3271541Srgrimes *mb = m1; 3281541Srgrimes *bpos = mtod(m1, caddr_t)+m1->m_len; 3291541Srgrimes return (0); 3301541Srgrimes} 3311541Srgrimes 3321541Srgrimes/* 3331541Srgrimes * Called once to initialize data structures... 3341541Srgrimes */ 3351549Srgrimesint 33683651Speternfs_init(struct vfsconf *vfsp) 3371541Srgrimes{ 33883651Speter int i; 3391541Srgrimes 34092783Sjeff nfsmount_zone = uma_zcreate("NFSMOUNT", sizeof(struct nfsmount), 34192783Sjeff NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); 3421541Srgrimes nfs_true = txdr_unsigned(TRUE); 3431541Srgrimes nfs_false = txdr_unsigned(FALSE); 3443664Sphk nfs_xdrneg1 = txdr_unsigned(-1); 3459336Sdfr nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 3469336Sdfr if (nfs_ticks < 1) 3479336Sdfr nfs_ticks = 1; 3481541Srgrimes /* Ensure async daemons disabled */ 34919449Sdfr for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { 35099797Sdillon nfs_iodwant[i] = NULL; 35199797Sdillon nfs_iodmount[i] = NULL; 35219449Sdfr } 3531541Srgrimes nfs_nhinit(); /* Init the nfsnode table */ 3541541Srgrimes 3551541Srgrimes /* 3561541Srgrimes * Initialize reply list and start timer 3571541Srgrimes */ 358158739Smohans mtx_init(&nfs_iod_mtx, "NFS iod lock", NULL, MTX_DEF); 359172600Smohans mtx_init(&nfs_xid_mtx, "NFS xid lock", NULL, MTX_DEF); 36016365Sphk 36142957Sdillon nfs_pbuf_freecnt = nswbuf / 2 + 1; 36242957Sdillon 3631549Srgrimes return (0); 3641541Srgrimes} 3651541Srgrimes 36638894Sbdeint 36783651Speternfs_uninit(struct vfsconf *vfsp) 36838894Sbde{ 369128111Speadar int i; 37038894Sbde 371128111Speadar /* 372128111Speadar * Tell all nfsiod processes to exit. Clear nfs_iodmax, and wakeup 373128111Speadar * any sleeping nfsiods so they check nfs_iodmax and exit. 374128111Speadar */ 375158739Smohans mtx_lock(&nfs_iod_mtx); 376128111Speadar nfs_iodmax = 0; 377128111Speadar for (i = 0; i < nfs_numasync; i++) 378128111Speadar if (nfs_iodwant[i]) 379128111Speadar wakeup(&nfs_iodwant[i]); 380128111Speadar /* The last nfsiod to exit will wake us up when nfs_numasync hits 0 */ 381128111Speadar while (nfs_numasync) 382158739Smohans msleep(&nfs_numasync, &nfs_iod_mtx, PWAIT, "ioddie", 0); 383158739Smohans mtx_unlock(&nfs_iod_mtx); 384128111Speadar nfs_nhuninit(); 385128111Speadar uma_zdestroy(nfsmount_zone); 38638894Sbde return (0); 38738894Sbde} 38838894Sbde 389158739Smohansvoid 390158739Smohansnfs_dircookie_lock(struct nfsnode *np) 391158739Smohans{ 392158739Smohans mtx_lock(&np->n_mtx); 393158739Smohans while (np->n_flag & NDIRCOOKIELK) 394158739Smohans (void) msleep(&np->n_flag, &np->n_mtx, PZERO, "nfsdirlk", 0); 395158739Smohans np->n_flag |= NDIRCOOKIELK; 396158739Smohans mtx_unlock(&np->n_mtx); 397158739Smohans} 398158739Smohans 399158739Smohansvoid 400158739Smohansnfs_dircookie_unlock(struct nfsnode *np) 401158739Smohans{ 402158739Smohans mtx_lock(&np->n_mtx); 403158739Smohans np->n_flag &= ~NDIRCOOKIELK; 404158739Smohans wakeup(&np->n_flag); 405158739Smohans mtx_unlock(&np->n_mtx); 406158739Smohans} 407158739Smohans 408158739Smohansint 409176134Sattilionfs_upgrade_vnlock(struct vnode *vp) 410158739Smohans{ 411158739Smohans int old_lock; 412196205Skib 413196205Skib ASSERT_VOP_LOCKED(vp, "nfs_upgrade_vnlock"); 414196205Skib old_lock = VOP_ISLOCKED(vp); 415196205Skib if (old_lock != LK_EXCLUSIVE) { 416196205Skib KASSERT(old_lock == LK_SHARED, 417196205Skib ("nfs_upgrade_vnlock: wrong old_lock %d", old_lock)); 418196205Skib /* Upgrade to exclusive lock, this might block */ 419196205Skib vn_lock(vp, LK_UPGRADE | LK_RETRY); 420158739Smohans } 421196205Skib return (old_lock); 422158739Smohans} 423158739Smohans 424158739Smohansvoid 425176134Sattilionfs_downgrade_vnlock(struct vnode *vp, int old_lock) 426158739Smohans{ 427158739Smohans if (old_lock != LK_EXCLUSIVE) { 428196205Skib KASSERT(old_lock == LK_SHARED, ("wrong old_lock %d", old_lock)); 429196205Skib /* Downgrade from exclusive lock. */ 430196205Skib vn_lock(vp, LK_DOWNGRADE | LK_RETRY); 431158739Smohans } 432158739Smohans} 433158739Smohans 434158739Smohansvoid 435158739Smohansnfs_printf(const char *fmt, ...) 436158739Smohans{ 437158739Smohans va_list ap; 438158739Smohans 439158739Smohans mtx_lock(&Giant); 440158739Smohans va_start(ap, fmt); 441158739Smohans printf(fmt, ap); 442158739Smohans va_end(ap); 443158739Smohans mtx_unlock(&Giant); 444158739Smohans} 445158739Smohans 4461541Srgrimes/* 4471541Srgrimes * Attribute cache routines. 4481541Srgrimes * nfs_loadattrcache() - loads or updates the cache contents from attributes 4491541Srgrimes * that are on the mbuf list 4501541Srgrimes * nfs_getattrcache() - returns valid attributes if found in cache, returns 4511541Srgrimes * error otherwise 4521541Srgrimes */ 4531541Srgrimes 4541541Srgrimes/* 4551541Srgrimes * Load the attribute cache (that lives in the nfsnode entry) with 4561541Srgrimes * the values on the mbuf list and 4571541Srgrimes * Iff vap not NULL 4581541Srgrimes * copy the attributes to *vaper 4591541Srgrimes */ 4601549Srgrimesint 46183651Speternfs_loadattrcache(struct vnode **vpp, struct mbuf **mdp, caddr_t *dposp, 462158739Smohans struct vattr *vaper, int dontshrink) 4631541Srgrimes{ 46483651Speter struct vnode *vp = *vpp; 46583651Speter struct vattr *vap; 46683651Speter struct nfs_fattr *fp; 467190380Srwatson struct nfsnode *np = NULL; 46883651Speter int32_t t1; 4699336Sdfr caddr_t cp2; 47084057Speter int rdev; 4711541Srgrimes struct mbuf *md; 4721541Srgrimes enum vtype vtyp; 4731541Srgrimes u_short vmode; 474171190Sjhb struct timespec mtime, mtime_save; 4759336Sdfr int v3 = NFS_ISV3(vp); 476167352Smohans struct thread *td = curthread; 477190380Srwatson int error = 0; 4781541Srgrimes 4791541Srgrimes md = *mdp; 4809336Sdfr t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 481177599Sru cp2 = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, M_WAIT); 482190380Srwatson if (cp2 == NULL) { 483190380Srwatson error = EBADRPC; 484190380Srwatson goto out; 485190380Srwatson } 4869336Sdfr fp = (struct nfs_fattr *)cp2; 4879336Sdfr if (v3) { 4889336Sdfr vtyp = nfsv3tov_type(fp->fa_type); 4899336Sdfr vmode = fxdr_unsigned(u_short, fp->fa_mode); 490130640Sphk rdev = makedev(fxdr_unsigned(int, fp->fa3_rdev.specdata1), 49116634Sbde fxdr_unsigned(int, fp->fa3_rdev.specdata2)); 4929336Sdfr fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 4931541Srgrimes } else { 4949336Sdfr vtyp = nfsv2tov_type(fp->fa_type); 4959336Sdfr vmode = fxdr_unsigned(u_short, fp->fa_mode); 4969336Sdfr /* 4979336Sdfr * XXX 4989336Sdfr * 4999336Sdfr * The duplicate information returned in fa_type and fa_mode 5009336Sdfr * is an ambiguity in the NFS version 2 protocol. 5019336Sdfr * 5029336Sdfr * VREG should be taken literally as a regular file. If a 5039336Sdfr * server intents to return some type information differently 5049336Sdfr * in the upper bits of the mode field (e.g. for sockets, or 5059336Sdfr * FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we 5069336Sdfr * leave the examination of the mode bits even in the VREG 5079336Sdfr * case to avoid breakage for bogus servers, but we make sure 5089336Sdfr * that there are actually type bits set in the upper part of 5099336Sdfr * fa_mode (and failing that, trust the va_type field). 5109336Sdfr * 5119336Sdfr * NFSv3 cleared the issue, and requires fa_mode to not 5129336Sdfr * contain any type information (while also introduing sockets 5139336Sdfr * and FIFOs for fa_type). 5149336Sdfr */ 5159336Sdfr if (vtyp == VNON || (vtyp == VREG && (vmode & S_IFMT) != 0)) 5169336Sdfr vtyp = IFTOVT(vmode); 51736541Speter rdev = fxdr_unsigned(int32_t, fp->fa2_rdev); 5189336Sdfr fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 5199336Sdfr 5209336Sdfr /* 5219336Sdfr * Really ugly NFSv2 kludge. 5229336Sdfr */ 5239336Sdfr if (vtyp == VCHR && rdev == 0xffffffff) 5249336Sdfr vtyp = VFIFO; 5251541Srgrimes } 5269336Sdfr 5271541Srgrimes /* 5281541Srgrimes * If v_type == VNON it is a new node, so fill in the v_type, 5298876Srgrimes * n_mtime fields. Check to see if it represents a special 5301541Srgrimes * device, and if so, check for a possible alias. Once the 5311541Srgrimes * correct vnode has been obtained, fill in the rest of the 5321541Srgrimes * information. 5331541Srgrimes */ 5341541Srgrimes np = VTONFS(vp); 535158739Smohans mtx_lock(&np->n_mtx); 53610219Sdfr if (vp->v_type != vtyp) { 5379336Sdfr vp->v_type = vtyp; 538126851Sphk if (vp->v_type == VFIFO) 539138290Sphk vp->v_op = &nfs_fifoops; 540138473Sps np->n_mtime = mtime; 5411541Srgrimes } 5421541Srgrimes vap = &np->n_vattr; 5431541Srgrimes vap->va_type = vtyp; 5441541Srgrimes vap->va_mode = (vmode & 07777); 54547028Sphk vap->va_rdev = rdev; 546171190Sjhb mtime_save = vap->va_mtime; 5471541Srgrimes vap->va_mtime = mtime; 5481541Srgrimes vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 5499336Sdfr if (v3) { 5509336Sdfr vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 5519336Sdfr vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 5529336Sdfr vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 55347751Speter vap->va_size = fxdr_hyper(&fp->fa3_size); 5549336Sdfr vap->va_blocksize = NFS_FABLKSIZE; 55547751Speter vap->va_bytes = fxdr_hyper(&fp->fa3_used); 55636541Speter vap->va_fileid = fxdr_unsigned(int32_t, 55736541Speter fp->fa3_fileid.nfsuquad[1]); 5589336Sdfr fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 5599336Sdfr fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 5609336Sdfr vap->va_flags = 0; 5619336Sdfr vap->va_filerev = 0; 5621541Srgrimes } else { 5639336Sdfr vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 5649336Sdfr vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 5659336Sdfr vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 56636541Speter vap->va_size = fxdr_unsigned(u_int32_t, fp->fa2_size); 56736541Speter vap->va_blocksize = fxdr_unsigned(int32_t, fp->fa2_blocksize); 56847751Speter vap->va_bytes = (u_quad_t)fxdr_unsigned(int32_t, fp->fa2_blocks) 56936541Speter * NFS_FABLKSIZE; 57036541Speter vap->va_fileid = fxdr_unsigned(int32_t, fp->fa2_fileid); 5719336Sdfr fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 5721541Srgrimes vap->va_flags = 0; 57336541Speter vap->va_ctime.tv_sec = fxdr_unsigned(u_int32_t, 57436541Speter fp->fa2_ctime.nfsv2_sec); 57518397Snate vap->va_ctime.tv_nsec = 0; 57683651Speter vap->va_gen = fxdr_unsigned(u_int32_t, fp->fa2_ctime.nfsv2_usec); 5771541Srgrimes vap->va_filerev = 0; 5781541Srgrimes } 57967486Sdwmalone np->n_attrstamp = time_second; 580167352Smohans /* Timestamp the NFS otw getattr fetch */ 581167352Smohans if (td->td_proc) { 582167352Smohans np->n_ac_ts_tid = td->td_tid; 583167352Smohans np->n_ac_ts_pid = td->td_proc->p_pid; 584167352Smohans np->n_ac_ts_syscalls = td->td_syscalls; 585167352Smohans } else 586167352Smohans bzero(&np->n_ac_ts, sizeof(struct nfs_attrcache_timestamp)); 587167352Smohans 5881541Srgrimes if (vap->va_size != np->n_size) { 5891541Srgrimes if (vap->va_type == VREG) { 59067486Sdwmalone if (dontshrink && vap->va_size < np->n_size) { 59167486Sdwmalone /* 59267486Sdwmalone * We've been told not to shrink the file; 59367486Sdwmalone * zero np->n_attrstamp to indicate that 59467486Sdwmalone * the attributes are stale. 59567486Sdwmalone */ 59667486Sdwmalone vap->va_size = np->n_size; 59767486Sdwmalone np->n_attrstamp = 0; 598190380Srwatson KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp); 59967486Sdwmalone } else if (np->n_flag & NMODIFIED) { 600128263Speadar /* 601128263Speadar * We've modified the file: Use the larger 602128263Speadar * of our size, and the server's size. 603128263Speadar */ 604128263Speadar if (vap->va_size < np->n_size) { 6051541Srgrimes vap->va_size = np->n_size; 606128263Speadar } else { 6071541Srgrimes np->n_size = vap->va_size; 608128263Speadar np->n_flag |= NSIZECHANGED; 609128263Speadar } 61054480Sdillon } else { 6111541Srgrimes np->n_size = vap->va_size; 612128263Speadar np->n_flag |= NSIZECHANGED; 61354480Sdillon } 61441026Speter vnode_pager_setsize(vp, np->n_size); 61554480Sdillon } else { 6161541Srgrimes np->n_size = vap->va_size; 61754480Sdillon } 6181541Srgrimes } 619171190Sjhb /* 620171190Sjhb * The following checks are added to prevent a race between (say) 621171190Sjhb * a READDIR+ and a WRITE. 622171190Sjhb * READDIR+, WRITE requests sent out. 623171190Sjhb * READDIR+ resp, WRITE resp received on client. 624171190Sjhb * However, the WRITE resp was handled before the READDIR+ resp 625171190Sjhb * causing the post op attrs from the write to be loaded first 626171190Sjhb * and the attrs from the READDIR+ to be loaded later. If this 627171190Sjhb * happens, we have stale attrs loaded into the attrcache. 628171190Sjhb * We detect this by for the mtime moving back. We invalidate the 629171190Sjhb * attrcache when this happens. 630171190Sjhb */ 631190380Srwatson if (timespeccmp(&mtime_save, &vap->va_mtime, >)) { 632171190Sjhb /* Size changed or mtime went backwards */ 633171190Sjhb np->n_attrstamp = 0; 634190380Srwatson KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp); 635190380Srwatson } 6361541Srgrimes if (vaper != NULL) { 6371541Srgrimes bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 6381541Srgrimes if (np->n_flag & NCHG) { 6399336Sdfr if (np->n_flag & NACC) 6409336Sdfr vaper->va_atime = np->n_atim; 6419336Sdfr if (np->n_flag & NUPD) 6429336Sdfr vaper->va_mtime = np->n_mtim; 6431541Srgrimes } 6441541Srgrimes } 645190396Srwatson 646190396Srwatson#ifdef KDTRACE_HOOKS 647190396Srwatson if (np->n_attrstamp != 0) 648190396Srwatson KDTRACE_NFS_ATTRCACHE_LOAD_DONE(vp, &np->n_vattr, 0); 649190396Srwatson#endif 650158739Smohans mtx_unlock(&np->n_mtx); 651190380Srwatsonout: 652190396Srwatson#ifdef KDTRACE_HOOKS 653190396Srwatson if (error) 654190396Srwatson KDTRACE_NFS_ATTRCACHE_LOAD_DONE(vp, NULL, error); 655190380Srwatson#endif 656190380Srwatson return (error); 6571541Srgrimes} 6581541Srgrimes 65936176Speter#ifdef NFS_ACDEBUG 66036176Speter#include <sys/sysctl.h> 66144101SbdeSYSCTL_DECL(_vfs_nfs); 66236176Speterstatic int nfs_acdebug; 663184561StrhodesSYSCTL_INT(_vfs_nfs, OID_AUTO, acdebug, CTLFLAG_RW, &nfs_acdebug, 0, 664184561Strhodes "Toggle acdebug (access cache debug) flag"); 66536176Speter#endif 66636176Speter 6671541Srgrimes/* 6681541Srgrimes * Check the time stamp 6691541Srgrimes * If the cache is valid, copy contents to *vap and return 0 6701541Srgrimes * otherwise return an error 6711541Srgrimes */ 6721549Srgrimesint 67383651Speternfs_getattrcache(struct vnode *vp, struct vattr *vaper) 6741541Srgrimes{ 67583651Speter struct nfsnode *np; 67683651Speter struct vattr *vap; 67736176Speter struct nfsmount *nmp; 67836176Speter int timeo; 679158739Smohans 68036176Speter np = VTONFS(vp); 68136176Speter vap = &np->n_vattr; 68236176Speter nmp = VFSTONFS(vp->v_mount); 683158739Smohans#ifdef NFS_ACDEBUG 684158739Smohans mtx_lock(&Giant); /* nfs_printf() */ 685158739Smohans#endif 686158739Smohans mtx_lock(&np->n_mtx); 68736176Speter /* XXX n_mtime doesn't seem to be updated on a miss-and-reload */ 688138473Sps timeo = (time_second - np->n_mtime.tv_sec) / 10; 68936176Speter 69036176Speter#ifdef NFS_ACDEBUG 69136176Speter if (nfs_acdebug>1) 692158739Smohans nfs_printf("nfs_getattrcache: initial timeo = %d\n", timeo); 69336176Speter#endif 69436176Speter 69536176Speter if (vap->va_type == VDIR) { 69636176Speter if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acdirmin) 69736176Speter timeo = nmp->nm_acdirmin; 69836176Speter else if (timeo > nmp->nm_acdirmax) 69936176Speter timeo = nmp->nm_acdirmax; 70036176Speter } else { 70136176Speter if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acregmin) 70236176Speter timeo = nmp->nm_acregmin; 70336176Speter else if (timeo > nmp->nm_acregmax) 70436176Speter timeo = nmp->nm_acregmax; 70536176Speter } 70636176Speter 70736176Speter#ifdef NFS_ACDEBUG 70836176Speter if (nfs_acdebug > 2) 709158739Smohans nfs_printf("acregmin %d; acregmax %d; acdirmin %d; acdirmax %d\n", 710158739Smohans nmp->nm_acregmin, nmp->nm_acregmax, 711158739Smohans nmp->nm_acdirmin, nmp->nm_acdirmax); 71236176Speter 71336176Speter if (nfs_acdebug) 714158739Smohans nfs_printf("nfs_getattrcache: age = %d; final timeo = %d\n", 715158739Smohans (time_second - np->n_attrstamp), timeo); 71636176Speter#endif 71736176Speter 71836176Speter if ((time_second - np->n_attrstamp) >= timeo) { 7191541Srgrimes nfsstats.attrcache_misses++; 720158739Smohans mtx_unlock(&np->n_mtx); 721190380Srwatson KDTRACE_NFS_ATTRCACHE_GET_MISS(vp); 722190380Srwatson return (ENOENT); 7231541Srgrimes } 7241541Srgrimes nfsstats.attrcache_hits++; 7251541Srgrimes if (vap->va_size != np->n_size) { 7261541Srgrimes if (vap->va_type == VREG) { 7271541Srgrimes if (np->n_flag & NMODIFIED) { 7281541Srgrimes if (vap->va_size < np->n_size) 7291541Srgrimes vap->va_size = np->n_size; 7301541Srgrimes else 7311541Srgrimes np->n_size = vap->va_size; 73254480Sdillon } else { 7331541Srgrimes np->n_size = vap->va_size; 73454480Sdillon } 73541026Speter vnode_pager_setsize(vp, np->n_size); 73654480Sdillon } else { 7371541Srgrimes np->n_size = vap->va_size; 73854480Sdillon } 7391541Srgrimes } 7401541Srgrimes bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr)); 7411541Srgrimes if (np->n_flag & NCHG) { 7429336Sdfr if (np->n_flag & NACC) 7439336Sdfr vaper->va_atime = np->n_atim; 7449336Sdfr if (np->n_flag & NUPD) 7459336Sdfr vaper->va_mtime = np->n_mtim; 7461541Srgrimes } 747158739Smohans mtx_unlock(&np->n_mtx); 748158739Smohans#ifdef NFS_ACDEBUG 749158739Smohans mtx_unlock(&Giant); /* nfs_printf() */ 750158739Smohans#endif 751190380Srwatson KDTRACE_NFS_ATTRCACHE_GET_HIT(vp, vap); 7521541Srgrimes return (0); 7531541Srgrimes} 7541541Srgrimes 755190785Sjhb/* 756190785Sjhb * Purge all cached information about an NFS vnode including name 757190785Sjhb * cache entries, the attribute cache, and the access cache. This is 758190785Sjhb * called when an NFS request for a node fails with a stale 759190785Sjhb * filehandle. 760190785Sjhb */ 761190785Sjhbvoid 762190785Sjhbnfs_purgecache(struct vnode *vp) 763190785Sjhb{ 764190785Sjhb struct nfsnode *np; 765190785Sjhb int i; 766190785Sjhb 767190785Sjhb np = VTONFS(vp); 768190785Sjhb cache_purge(vp); 769190785Sjhb mtx_lock(&np->n_mtx); 770190785Sjhb np->n_attrstamp = 0; 771190785Sjhb KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp); 772190785Sjhb for (i = 0; i < NFS_ACCESSCACHESIZE; i++) 773190785Sjhb np->n_accesscache[i].stamp = 0; 774190785Sjhb KDTRACE_NFS_ACCESSCACHE_FLUSH_DONE(vp); 775190785Sjhb mtx_unlock(&np->n_mtx); 776190785Sjhb} 777190785Sjhb 77843305Sdillonstatic nfsuint64 nfs_nullcookie = { { 0, 0 } }; 7799336Sdfr/* 7809336Sdfr * This function finds the directory cookie that corresponds to the 7819336Sdfr * logical byte offset given. 7829336Sdfr */ 7839336Sdfrnfsuint64 * 78483651Speternfs_getcookie(struct nfsnode *np, off_t off, int add) 7859336Sdfr{ 78683651Speter struct nfsdmap *dp, *dp2; 78783651Speter int pos; 788158739Smohans nfsuint64 *retval = NULL; 789158739Smohans 79036979Sbde pos = (uoff_t)off / NFS_DIRBLKSIZ; 79136979Sbde if (pos == 0 || off < 0) { 7929336Sdfr#ifdef DIAGNOSTIC 7939336Sdfr if (add) 79436979Sbde panic("nfs getcookie add at <= 0"); 7959336Sdfr#endif 7969336Sdfr return (&nfs_nullcookie); 7979336Sdfr } 7989336Sdfr pos--; 79983651Speter dp = LIST_FIRST(&np->n_cookies); 8009336Sdfr if (!dp) { 8019336Sdfr if (add) { 802184205Sdes dp = malloc(sizeof (struct nfsdmap), 803111119Simp M_NFSDIROFF, M_WAITOK); 8049336Sdfr dp->ndm_eocookie = 0; 8059336Sdfr LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list); 8069336Sdfr } else 807158739Smohans goto out; 8089336Sdfr } 8099336Sdfr while (pos >= NFSNUMCOOKIES) { 8109336Sdfr pos -= NFSNUMCOOKIES; 81183651Speter if (LIST_NEXT(dp, ndm_list)) { 8129336Sdfr if (!add && dp->ndm_eocookie < NFSNUMCOOKIES && 813158739Smohans pos >= dp->ndm_eocookie) 814158739Smohans goto out; 81583651Speter dp = LIST_NEXT(dp, ndm_list); 8169336Sdfr } else if (add) { 817184205Sdes dp2 = malloc(sizeof (struct nfsdmap), 818111119Simp M_NFSDIROFF, M_WAITOK); 8199336Sdfr dp2->ndm_eocookie = 0; 8209336Sdfr LIST_INSERT_AFTER(dp, dp2, ndm_list); 8219336Sdfr dp = dp2; 8229336Sdfr } else 823158739Smohans goto out; 8249336Sdfr } 8259336Sdfr if (pos >= dp->ndm_eocookie) { 8269336Sdfr if (add) 8279336Sdfr dp->ndm_eocookie = pos + 1; 8289336Sdfr else 829158739Smohans goto out; 8309336Sdfr } 831158739Smohans retval = &dp->ndm_cookies[pos]; 832158739Smohansout: 833158739Smohans return (retval); 8349336Sdfr} 8359336Sdfr 8369336Sdfr/* 8379336Sdfr * Invalidate cached directory information, except for the actual directory 8389336Sdfr * blocks (which are invalidated separately). 8399336Sdfr * Done mainly to avoid the use of stale offset cookies. 8409336Sdfr */ 8419336Sdfrvoid 84283651Speternfs_invaldir(struct vnode *vp) 8439336Sdfr{ 84483651Speter struct nfsnode *np = VTONFS(vp); 8459336Sdfr 8469336Sdfr#ifdef DIAGNOSTIC 8479336Sdfr if (vp->v_type != VDIR) 8489336Sdfr panic("nfs: invaldir not dir"); 8499336Sdfr#endif 850158739Smohans nfs_dircookie_lock(np); 8519336Sdfr np->n_direofoffset = 0; 8529336Sdfr np->n_cookieverf.nfsuquad[0] = 0; 8539336Sdfr np->n_cookieverf.nfsuquad[1] = 0; 85483651Speter if (LIST_FIRST(&np->n_cookies)) 85583651Speter LIST_FIRST(&np->n_cookies)->ndm_eocookie = 0; 856158739Smohans nfs_dircookie_unlock(np); 8579336Sdfr} 8589336Sdfr 8599336Sdfr/* 8609336Sdfr * The write verifier has changed (probably due to a server reboot), so all 8619336Sdfr * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 8629336Sdfr * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 86354480Sdillon * and B_CLUSTEROK flags. Once done the new write verifier can be set for the 86454480Sdillon * mount point. 86554480Sdillon * 86683651Speter * B_CLUSTEROK must be cleared along with B_NEEDCOMMIT because stage 1 data 86754480Sdillon * writes are not clusterable. 8689336Sdfr */ 8699336Sdfrvoid 87083651Speternfs_clearcommit(struct mount *mp) 8719336Sdfr{ 87283651Speter struct vnode *vp, *nvp; 87383651Speter struct buf *bp, *nbp; 874177493Sjeff struct bufobj *bo; 8759336Sdfr 876122091Skan MNT_ILOCK(mp); 877131551Sphk MNT_VNODE_FOREACH(vp, mp, nvp) { 878177493Sjeff bo = &vp->v_bufobj; 879103939Sjeff VI_LOCK(vp); 880143510Sjeff if (vp->v_iflag & VI_DOOMED) { 881120787Sjeff VI_UNLOCK(vp); 882120787Sjeff continue; 883120787Sjeff } 884177493Sjeff vholdl(vp); 885177493Sjeff VI_UNLOCK(vp); 886122091Skan MNT_IUNLOCK(mp); 887177493Sjeff BO_LOCK(bo); 888177493Sjeff TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) { 889175486Sattilio if (!BUF_ISLOCKED(bp) && 89048225Smckusick (bp->b_flags & (B_DELWRI | B_NEEDCOMMIT)) 8919336Sdfr == (B_DELWRI | B_NEEDCOMMIT)) 89254480Sdillon bp->b_flags &= ~(B_NEEDCOMMIT | B_CLUSTEROK); 8939336Sdfr } 894177493Sjeff BO_UNLOCK(bo); 895177493Sjeff vdrop(vp); 896122091Skan MNT_ILOCK(mp); 8979336Sdfr } 898122091Skan MNT_IUNLOCK(mp); 8999336Sdfr} 9009336Sdfr 9019336Sdfr/* 90283651Speter * Helper functions for former macros. Some of these should be 90383651Speter * moved to their callers. 9049336Sdfr */ 90583651Speter 9065455Sdgint 90783651Speternfsm_mtofh_xx(struct vnode *d, struct vnode **v, int v3, int *f, 90888091Siedowse struct mbuf **md, caddr_t *dpos) 9099336Sdfr{ 91083651Speter struct nfsnode *ttnp; 91183651Speter struct vnode *ttvp; 91283651Speter nfsfh_t *ttfhp; 91388091Siedowse u_int32_t *tl; 91483651Speter int ttfhsize; 91583651Speter int t1; 9169336Sdfr 91783651Speter if (v3) { 91888091Siedowse tl = nfsm_dissect_xx(NFSX_UNSIGNED, md, dpos); 91988091Siedowse if (tl == NULL) 92084057Speter return EBADRPC; 92188091Siedowse *f = fxdr_unsigned(int, *tl); 92283651Speter } else 92383651Speter *f = 1; 92483651Speter if (*f) { 92588091Siedowse t1 = nfsm_getfh_xx(&ttfhp, &ttfhsize, (v3), md, dpos); 92683651Speter if (t1 != 0) 92783651Speter return t1; 928162288Smohans t1 = nfs_nget(d->v_mount, ttfhp, ttfhsize, &ttnp, LK_EXCLUSIVE); 92983651Speter if (t1 != 0) 93083651Speter return t1; 93183651Speter *v = NFSTOV(ttnp); 93283651Speter } 93383651Speter if (v3) { 93488091Siedowse tl = nfsm_dissect_xx(NFSX_UNSIGNED, md, dpos); 93588091Siedowse if (tl == NULL) 93684057Speter return EBADRPC; 93783651Speter if (*f) 93888091Siedowse *f = fxdr_unsigned(int, *tl); 93988091Siedowse else if (fxdr_unsigned(int, *tl)) 94088091Siedowse nfsm_adv_xx(NFSX_V3FATTR, md, dpos); 94183651Speter } 94283651Speter if (*f) { 94383651Speter ttvp = *v; 94499797Sdillon t1 = nfs_loadattrcache(&ttvp, md, dpos, NULL, 0); 94583651Speter if (t1) 94683651Speter return t1; 94783651Speter *v = ttvp; 94883651Speter } 94983651Speter return 0; 95083651Speter} 95183651Speter 95283651Speterint 95388091Siedowsenfsm_getfh_xx(nfsfh_t **f, int *s, int v3, struct mbuf **md, caddr_t *dpos) 95483651Speter{ 95588091Siedowse u_int32_t *tl; 95683651Speter 95783651Speter if (v3) { 95888091Siedowse tl = nfsm_dissect_xx(NFSX_UNSIGNED, md, dpos); 95988091Siedowse if (tl == NULL) 96084057Speter return EBADRPC; 96188091Siedowse *s = fxdr_unsigned(int, *tl); 96284057Speter if (*s <= 0 || *s > NFSX_V3FHMAX) 96383651Speter return EBADRPC; 96483651Speter } else 96583651Speter *s = NFSX_V2FH; 96684057Speter *f = nfsm_dissect_xx(nfsm_rndup(*s), md, dpos); 96784057Speter if (*f == NULL) 96884057Speter return EBADRPC; 96984057Speter else 97084057Speter return 0; 97183651Speter} 97283651Speter 97383651Speter 97483651Speterint 97588091Siedowsenfsm_loadattr_xx(struct vnode **v, struct vattr *va, struct mbuf **md, 976158739Smohans caddr_t *dpos) 97783651Speter{ 97883651Speter int t1; 97983651Speter 98083651Speter struct vnode *ttvp = *v; 98183651Speter t1 = nfs_loadattrcache(&ttvp, md, dpos, va, 0); 98283651Speter if (t1 != 0) 98383651Speter return t1; 98483651Speter *v = ttvp; 98583651Speter return 0; 98683651Speter} 98783651Speter 98883651Speterint 98988091Siedowsenfsm_postop_attr_xx(struct vnode **v, int *f, struct mbuf **md, 990158739Smohans caddr_t *dpos) 99183651Speter{ 99288091Siedowse u_int32_t *tl; 99383651Speter int t1; 99483651Speter 99583651Speter struct vnode *ttvp = *v; 99688091Siedowse tl = nfsm_dissect_xx(NFSX_UNSIGNED, md, dpos); 99788091Siedowse if (tl == NULL) 99884057Speter return EBADRPC; 99988091Siedowse *f = fxdr_unsigned(int, *tl); 100083914Siedowse if (*f != 0) { 100199797Sdillon t1 = nfs_loadattrcache(&ttvp, md, dpos, NULL, 1); 100283651Speter if (t1 != 0) { 100383651Speter *f = 0; 100483651Speter return t1; 100583651Speter } 100683651Speter *v = ttvp; 10079336Sdfr } 100883651Speter return 0; 10099336Sdfr} 10109336Sdfr 10119336Sdfrint 101288091Siedowsenfsm_wcc_data_xx(struct vnode **v, int *f, struct mbuf **md, caddr_t *dpos) 101331886Sbde{ 101488091Siedowse u_int32_t *tl; 101583651Speter int ttattrf, ttretf = 0; 101683651Speter int t1; 10175455Sdg 101888091Siedowse tl = nfsm_dissect_xx(NFSX_UNSIGNED, md, dpos); 101988091Siedowse if (tl == NULL) 102084057Speter return EBADRPC; 102188091Siedowse if (*tl == nfs_true) { 102288091Siedowse tl = nfsm_dissect_xx(6 * NFSX_UNSIGNED, md, dpos); 102388091Siedowse if (tl == NULL) 102484057Speter return EBADRPC; 1025158739Smohans mtx_lock(&(VTONFS(*v))->n_mtx); 102683651Speter if (*f) 1027138473Sps ttretf = (VTONFS(*v)->n_mtime.tv_sec == fxdr_unsigned(u_int32_t, *(tl + 2)) && 1028138473Sps VTONFS(*v)->n_mtime.tv_nsec == fxdr_unsigned(u_int32_t, *(tl + 3))); 1029158739Smohans mtx_unlock(&(VTONFS(*v))->n_mtx); 103083651Speter } 103188091Siedowse t1 = nfsm_postop_attr_xx(v, &ttattrf, md, dpos); 103283651Speter if (t1) 103383651Speter return t1; 103483651Speter if (*f) 103583651Speter *f = ttretf; 103683651Speter else 103783651Speter *f = ttattrf; 103883651Speter return 0; 10395455Sdg} 104036503Speter 104183651Speterint 104288091Siedowsenfsm_strtom_xx(const char *a, int s, int m, struct mbuf **mb, caddr_t *bpos) 104336503Speter{ 104488091Siedowse u_int32_t *tl; 104583651Speter int t1; 104636503Speter 104783651Speter if (s > m) 104883651Speter return ENAMETOOLONG; 104983651Speter t1 = nfsm_rndup(s) + NFSX_UNSIGNED; 105083651Speter if (t1 <= M_TRAILINGSPACE(*mb)) { 105188091Siedowse tl = nfsm_build_xx(t1, mb, bpos); 105288091Siedowse *tl++ = txdr_unsigned(s); 105388091Siedowse *(tl + ((t1 >> 2) - 2)) = 0; 105488091Siedowse bcopy(a, tl, s); 105583651Speter } else { 105683651Speter t1 = nfsm_strtmbuf(mb, bpos, a, s); 105783651Speter if (t1 != 0) 105883651Speter return t1; 105936503Speter } 106083651Speter return 0; 106136503Speter} 106236503Speter 106383651Speterint 106488091Siedowsenfsm_fhtom_xx(struct vnode *v, int v3, struct mbuf **mb, caddr_t *bpos) 106583651Speter{ 106688091Siedowse u_int32_t *tl; 106783651Speter int t1; 106883651Speter caddr_t cp; 106983651Speter 107083651Speter if (v3) { 107183651Speter t1 = nfsm_rndup(VTONFS(v)->n_fhsize) + NFSX_UNSIGNED; 107283651Speter if (t1 < M_TRAILINGSPACE(*mb)) { 107388091Siedowse tl = nfsm_build_xx(t1, mb, bpos); 107488091Siedowse *tl++ = txdr_unsigned(VTONFS(v)->n_fhsize); 107588091Siedowse *(tl + ((t1 >> 2) - 2)) = 0; 107688091Siedowse bcopy(VTONFS(v)->n_fhp, tl, VTONFS(v)->n_fhsize); 107783651Speter } else { 107883651Speter t1 = nfsm_strtmbuf(mb, bpos, 107983651Speter (const char *)VTONFS(v)->n_fhp, 108083651Speter VTONFS(v)->n_fhsize); 108183651Speter if (t1 != 0) 108283651Speter return t1; 108383651Speter } 108483651Speter } else { 108584002Speter cp = nfsm_build_xx(NFSX_V2FH, mb, bpos); 108683651Speter bcopy(VTONFS(v)->n_fhp, cp, NFSX_V2FH); 108783651Speter } 108883651Speter return 0; 108983651Speter} 109083651Speter 109136503Spetervoid 109288091Siedowsenfsm_v3attrbuild_xx(struct vattr *va, int full, struct mbuf **mb, 109388091Siedowse caddr_t *bpos) 109436503Speter{ 109588091Siedowse u_int32_t *tl; 109636503Speter 109783651Speter if (va->va_mode != (mode_t)VNOVAL) { 109888091Siedowse tl = nfsm_build_xx(2 * NFSX_UNSIGNED, mb, bpos); 109988091Siedowse *tl++ = nfs_true; 110088091Siedowse *tl = txdr_unsigned(va->va_mode); 110183651Speter } else { 110288091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 110388091Siedowse *tl = nfs_false; 110483651Speter } 110583651Speter if (full && va->va_uid != (uid_t)VNOVAL) { 110688091Siedowse tl = nfsm_build_xx(2 * NFSX_UNSIGNED, mb, bpos); 110788091Siedowse *tl++ = nfs_true; 110888091Siedowse *tl = txdr_unsigned(va->va_uid); 110983651Speter } else { 111088091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 111188091Siedowse *tl = nfs_false; 111283651Speter } 111383651Speter if (full && va->va_gid != (gid_t)VNOVAL) { 111488091Siedowse tl = nfsm_build_xx(2 * NFSX_UNSIGNED, mb, bpos); 111588091Siedowse *tl++ = nfs_true; 111688091Siedowse *tl = txdr_unsigned(va->va_gid); 111783651Speter } else { 111888091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 111988091Siedowse *tl = nfs_false; 112083651Speter } 112183651Speter if (full && va->va_size != VNOVAL) { 112288091Siedowse tl = nfsm_build_xx(3 * NFSX_UNSIGNED, mb, bpos); 112388091Siedowse *tl++ = nfs_true; 112488091Siedowse txdr_hyper(va->va_size, tl); 112583651Speter } else { 112688091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 112788091Siedowse *tl = nfs_false; 112883651Speter } 112983651Speter if (va->va_atime.tv_sec != VNOVAL) { 113083651Speter if (va->va_atime.tv_sec != time_second) { 113188091Siedowse tl = nfsm_build_xx(3 * NFSX_UNSIGNED, mb, bpos); 113288091Siedowse *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); 113388091Siedowse txdr_nfsv3time(&va->va_atime, tl); 113483651Speter } else { 113588091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 113688091Siedowse *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); 113783651Speter } 113883651Speter } else { 113988091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 114088091Siedowse *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE); 114183651Speter } 114283651Speter if (va->va_mtime.tv_sec != VNOVAL) { 114383651Speter if (va->va_mtime.tv_sec != time_second) { 114488091Siedowse tl = nfsm_build_xx(3 * NFSX_UNSIGNED, mb, bpos); 114588091Siedowse *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); 114688091Siedowse txdr_nfsv3time(&va->va_mtime, tl); 114783651Speter } else { 114888091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 114988091Siedowse *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); 115083651Speter } 115183651Speter } else { 115288091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 115388091Siedowse *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE); 115483651Speter } 115536503Speter} 1156