nfs_subs.c revision 171190
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 171190 2007-07-03 18:31:47Z jhb $"); 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 441541Srgrimes#include <sys/param.h> 4548274Speter#include <sys/systm.h> 4648274Speter#include <sys/kernel.h> 4760041Sphk#include <sys/bio.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> 5983651Speter#include <sys/sysproto.h> 601541Srgrimes 613305Sphk#include <vm/vm.h> 6212662Sdg#include <vm/vm_object.h> 6312662Sdg#include <vm/vm_extern.h> 6492783Sjeff#include <vm/uma.h> 653305Sphk 66122698Salfred#include <rpc/rpcclnt.h> 67122698Salfred 681541Srgrimes#include <nfs/rpcv2.h> 699336Sdfr#include <nfs/nfsproto.h> 7083651Speter#include <nfsclient/nfs.h> 7183651Speter#include <nfsclient/nfsnode.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 84158739Smohans/* 851541Srgrimes * Data items converted to xdr at startup, since they are constant 861541Srgrimes * This is kinda hokey, but may save a little time doing byte swaps 871541Srgrimes */ 8883651Speteru_int32_t nfs_xdrneg1; 8983651Speteru_int32_t rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 9083651Speter rpc_mismatch, rpc_auth_unix, rpc_msgaccepted; 9183651Speteru_int32_t nfs_true, nfs_false; 921541Srgrimes 931541Srgrimes/* And other global data */ 94152652Sreesu_int32_t nfs_xid = 0; 9512911Sphkstatic enum vtype nv2tov_type[8]= { 9683651Speter VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON 9712911Sphk}; 9812911Sphk 9983651Speterint nfs_ticks; 10083651Speterint nfs_pbuf_freecnt = -1; /* start out unlimited */ 1019336Sdfr 10283651Speterstruct nfs_reqq nfs_reqq; 103138496Spsstruct mtx nfs_reqq_mtx; 10483651Speterstruct nfs_bufq nfs_bufq; 1059759Sbde 1069336Sdfr/* 1079336Sdfr * and the reverse mapping from generic to Version 2 procedure numbers 1089336Sdfr */ 1099336Sdfrint nfsv2_procid[NFS_NPROCS] = { 1109336Sdfr NFSV2PROC_NULL, 1119336Sdfr NFSV2PROC_GETATTR, 1129336Sdfr NFSV2PROC_SETATTR, 1139336Sdfr NFSV2PROC_LOOKUP, 1149336Sdfr NFSV2PROC_NOOP, 1159336Sdfr NFSV2PROC_READLINK, 1169336Sdfr NFSV2PROC_READ, 1179336Sdfr NFSV2PROC_WRITE, 1189336Sdfr NFSV2PROC_CREATE, 1199336Sdfr NFSV2PROC_MKDIR, 1209336Sdfr NFSV2PROC_SYMLINK, 1219336Sdfr NFSV2PROC_CREATE, 1229336Sdfr NFSV2PROC_REMOVE, 1239336Sdfr NFSV2PROC_RMDIR, 1249336Sdfr NFSV2PROC_RENAME, 1259336Sdfr NFSV2PROC_LINK, 1269336Sdfr NFSV2PROC_READDIR, 1279336Sdfr NFSV2PROC_NOOP, 1289336Sdfr NFSV2PROC_STATFS, 1299336Sdfr NFSV2PROC_NOOP, 1309336Sdfr NFSV2PROC_NOOP, 1319336Sdfr NFSV2PROC_NOOP, 1329336Sdfr NFSV2PROC_NOOP, 1339336Sdfr}; 1349336Sdfr 13560938SjakeLIST_HEAD(nfsnodehashhead, nfsnode); 1363664Sphk 1371541Srgrimes/* 1381541Srgrimes * Create the header for an rpc request packet 1391541Srgrimes * The hsiz is the size of the rest of the nfs request header. 1401541Srgrimes * (just used to decide if a cluster is a good idea) 1411541Srgrimes */ 1421541Srgrimesstruct mbuf * 14383651Speternfsm_reqhead(struct vnode *vp, u_long procid, int hsiz) 1441541Srgrimes{ 14583651Speter struct mbuf *mb; 1461541Srgrimes 147111119Simp MGET(mb, M_TRYWAIT, MT_DATA); 1481541Srgrimes if (hsiz >= MINCLSIZE) 149111119Simp MCLGET(mb, M_TRYWAIT); 1501541Srgrimes mb->m_len = 0; 1511541Srgrimes return (mb); 1521541Srgrimes} 1531541Srgrimes 1541541Srgrimes/* 1551541Srgrimes * Build the RPC header and fill in the authorization info. 1561541Srgrimes * The authorization string argument is only used when the credentials 1571541Srgrimes * come from outside of the kernel. 1581541Srgrimes * Returns the head of the mbuf list. 1591541Srgrimes */ 1601541Srgrimesstruct mbuf * 16183651Speternfsm_rpchead(struct ucred *cr, int nmflag, int procid, int auth_type, 16283651Speter int auth_len, struct mbuf *mrest, int mrest_len, struct mbuf **mbp, 163152652Srees u_int32_t **xidpp) 1641541Srgrimes{ 16583651Speter struct mbuf *mb; 16683651Speter u_int32_t *tl; 16783651Speter caddr_t bpos; 16883651Speter int i; 16983651Speter struct mbuf *mreq; 17083651Speter int grpsiz, authsiz; 1711541Srgrimes 1721541Srgrimes authsiz = nfsm_rndup(auth_len); 173111119Simp MGETHDR(mb, M_TRYWAIT, MT_DATA); 1749336Sdfr if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 175111119Simp MCLGET(mb, M_TRYWAIT); 1769336Sdfr } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 1779336Sdfr MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 1781541Srgrimes } else { 1799336Sdfr MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 1801541Srgrimes } 1811541Srgrimes mb->m_len = 0; 1821541Srgrimes mreq = mb; 1831541Srgrimes bpos = mtod(mb, caddr_t); 1841541Srgrimes 1851541Srgrimes /* 1861541Srgrimes * First the RPC header. 1871541Srgrimes */ 18884002Speter tl = nfsm_build(u_int32_t *, 8 * NFSX_UNSIGNED); 18917186Sdfr 190158739Smohans mtx_lock(&nfs_reqq_mtx); 19135066Sphk /* Get a pretty random xid to start with */ 19283651Speter if (!nfs_xid) 19335066Sphk nfs_xid = random(); 19417186Sdfr /* 19517186Sdfr * Skip zero xid if it should ever happen. 19617186Sdfr */ 1971541Srgrimes if (++nfs_xid == 0) 1981541Srgrimes nfs_xid++; 19917186Sdfr 200152652Srees *xidpp = tl; 201152652Srees *tl++ = txdr_unsigned(nfs_xid); 202158739Smohans mtx_unlock(&nfs_reqq_mtx); 2031541Srgrimes *tl++ = rpc_call; 2041541Srgrimes *tl++ = rpc_vers; 20583651Speter *tl++ = txdr_unsigned(NFS_PROG); 20683651Speter if (nmflag & NFSMNT_NFSV3) { 20783651Speter *tl++ = txdr_unsigned(NFS_VER3); 20883651Speter *tl++ = txdr_unsigned(procid); 2091541Srgrimes } else { 21083651Speter *tl++ = txdr_unsigned(NFS_VER2); 21183651Speter *tl++ = txdr_unsigned(nfsv2_procid[procid]); 2121541Srgrimes } 2131541Srgrimes 2141541Srgrimes /* 2151541Srgrimes * And then the authorization cred. 2161541Srgrimes */ 2171541Srgrimes *tl++ = txdr_unsigned(auth_type); 2181541Srgrimes *tl = txdr_unsigned(authsiz); 2191541Srgrimes switch (auth_type) { 2201541Srgrimes case RPCAUTH_UNIX: 22184002Speter tl = nfsm_build(u_int32_t *, auth_len); 2221541Srgrimes *tl++ = 0; /* stamp ?? */ 2231541Srgrimes *tl++ = 0; /* NULL hostname */ 2241541Srgrimes *tl++ = txdr_unsigned(cr->cr_uid); 2251541Srgrimes *tl++ = txdr_unsigned(cr->cr_groups[0]); 2261541Srgrimes grpsiz = (auth_len >> 2) - 5; 2271541Srgrimes *tl++ = txdr_unsigned(grpsiz); 2281541Srgrimes for (i = 1; i <= grpsiz; i++) 2291541Srgrimes *tl++ = txdr_unsigned(cr->cr_groups[i]); 2301541Srgrimes break; 23183651Speter } 2329336Sdfr 2339336Sdfr /* 2349336Sdfr * And the verifier... 2359336Sdfr */ 23684002Speter tl = nfsm_build(u_int32_t *, 2 * NFSX_UNSIGNED); 23783651Speter *tl++ = txdr_unsigned(RPCAUTH_NULL); 23883651Speter *tl = 0; 2391541Srgrimes mb->m_next = mrest; 2409336Sdfr mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 24199797Sdillon mreq->m_pkthdr.rcvif = NULL; 2421541Srgrimes *mbp = mb; 2431541Srgrimes return (mreq); 2441541Srgrimes} 2451541Srgrimes 2461541Srgrimes/* 24717186Sdfr * copies a uio scatter/gather list to an mbuf chain. 24817186Sdfr * NOTE: can ony handle iovcnt == 1 2491541Srgrimes */ 2501549Srgrimesint 25183651Speternfsm_uiotombuf(struct uio *uiop, struct mbuf **mq, int siz, caddr_t *bpos) 2521541Srgrimes{ 25383651Speter char *uiocp; 25483651Speter struct mbuf *mp, *mp2; 25583651Speter int xfer, left, mlen; 2561541Srgrimes int uiosiz, clflg, rem; 2571541Srgrimes char *cp; 2581541Srgrimes 25936519Speter#ifdef DIAGNOSTIC 26017186Sdfr if (uiop->uio_iovcnt != 1) 26117186Sdfr panic("nfsm_uiotombuf: iovcnt != 1"); 26236519Speter#endif 26317186Sdfr 2641541Srgrimes if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 2651541Srgrimes clflg = 1; 2661541Srgrimes else 2671541Srgrimes clflg = 0; 2681541Srgrimes rem = nfsm_rndup(siz)-siz; 2691541Srgrimes mp = mp2 = *mq; 2701541Srgrimes while (siz > 0) { 2711541Srgrimes left = uiop->uio_iov->iov_len; 2721541Srgrimes uiocp = uiop->uio_iov->iov_base; 2731541Srgrimes if (left > siz) 2741541Srgrimes left = siz; 2751541Srgrimes uiosiz = left; 2761541Srgrimes while (left > 0) { 2771541Srgrimes mlen = M_TRAILINGSPACE(mp); 2781541Srgrimes if (mlen == 0) { 279111119Simp MGET(mp, M_TRYWAIT, MT_DATA); 2801541Srgrimes if (clflg) 281111119Simp MCLGET(mp, M_TRYWAIT); 2821541Srgrimes mp->m_len = 0; 2831541Srgrimes mp2->m_next = mp; 2841541Srgrimes mp2 = mp; 2851541Srgrimes mlen = M_TRAILINGSPACE(mp); 2861541Srgrimes } 2871541Srgrimes xfer = (left > mlen) ? mlen : left; 2881541Srgrimes#ifdef notdef 2891541Srgrimes /* Not Yet.. */ 2901541Srgrimes if (uiop->uio_iov->iov_op != NULL) 2911541Srgrimes (*(uiop->uio_iov->iov_op)) 2921541Srgrimes (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 2931541Srgrimes else 2941541Srgrimes#endif 2951541Srgrimes if (uiop->uio_segflg == UIO_SYSSPACE) 2961541Srgrimes bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 2971541Srgrimes else 2981541Srgrimes copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 2991541Srgrimes mp->m_len += xfer; 3001541Srgrimes left -= xfer; 3011541Srgrimes uiocp += xfer; 3021541Srgrimes uiop->uio_offset += xfer; 3031541Srgrimes uiop->uio_resid -= xfer; 3041541Srgrimes } 305104908Smike uiop->uio_iov->iov_base = 306104908Smike (char *)uiop->uio_iov->iov_base + uiosiz; 30717186Sdfr uiop->uio_iov->iov_len -= uiosiz; 3081541Srgrimes siz -= uiosiz; 3091541Srgrimes } 3101541Srgrimes if (rem > 0) { 3111541Srgrimes if (rem > M_TRAILINGSPACE(mp)) { 312111119Simp MGET(mp, M_TRYWAIT, MT_DATA); 3131541Srgrimes mp->m_len = 0; 3141541Srgrimes mp2->m_next = mp; 3151541Srgrimes } 3161541Srgrimes cp = mtod(mp, caddr_t)+mp->m_len; 3171541Srgrimes for (left = 0; left < rem; left++) 3181541Srgrimes *cp++ = '\0'; 3191541Srgrimes mp->m_len += rem; 3201541Srgrimes *bpos = cp; 3211541Srgrimes } else 3221541Srgrimes *bpos = mtod(mp, caddr_t)+mp->m_len; 3231541Srgrimes *mq = mp; 3241541Srgrimes return (0); 3251541Srgrimes} 3261541Srgrimes 3271541Srgrimes/* 3281541Srgrimes * Copy a string into mbufs for the hard cases... 3291541Srgrimes */ 3301549Srgrimesint 33183651Speternfsm_strtmbuf(struct mbuf **mb, char **bpos, const char *cp, long siz) 3321541Srgrimes{ 33383651Speter struct mbuf *m1 = NULL, *m2; 3341541Srgrimes long left, xfer, len, tlen; 33536541Speter u_int32_t *tl; 3361541Srgrimes int putsize; 3371541Srgrimes 3381541Srgrimes putsize = 1; 3391541Srgrimes m2 = *mb; 3401541Srgrimes left = M_TRAILINGSPACE(m2); 3411541Srgrimes if (left > 0) { 34236541Speter tl = ((u_int32_t *)(*bpos)); 3431541Srgrimes *tl++ = txdr_unsigned(siz); 3441541Srgrimes putsize = 0; 3451541Srgrimes left -= NFSX_UNSIGNED; 3461541Srgrimes m2->m_len += NFSX_UNSIGNED; 3471541Srgrimes if (left > 0) { 3481541Srgrimes bcopy(cp, (caddr_t) tl, left); 3491541Srgrimes siz -= left; 3501541Srgrimes cp += left; 3511541Srgrimes m2->m_len += left; 3521541Srgrimes left = 0; 3531541Srgrimes } 3541541Srgrimes } 3551541Srgrimes /* Loop around adding mbufs */ 3561541Srgrimes while (siz > 0) { 357111119Simp MGET(m1, M_TRYWAIT, MT_DATA); 3581541Srgrimes if (siz > MLEN) 359111119Simp MCLGET(m1, M_TRYWAIT); 3601541Srgrimes m1->m_len = NFSMSIZ(m1); 3611541Srgrimes m2->m_next = m1; 3621541Srgrimes m2 = m1; 36336541Speter tl = mtod(m1, u_int32_t *); 3641541Srgrimes tlen = 0; 3651541Srgrimes if (putsize) { 3661541Srgrimes *tl++ = txdr_unsigned(siz); 3671541Srgrimes m1->m_len -= NFSX_UNSIGNED; 3681541Srgrimes tlen = NFSX_UNSIGNED; 3691541Srgrimes putsize = 0; 3701541Srgrimes } 3711541Srgrimes if (siz < m1->m_len) { 3721541Srgrimes len = nfsm_rndup(siz); 3731541Srgrimes xfer = siz; 3741541Srgrimes if (xfer < len) 3751541Srgrimes *(tl+(xfer>>2)) = 0; 3761541Srgrimes } else { 3771541Srgrimes xfer = len = m1->m_len; 3781541Srgrimes } 3791541Srgrimes bcopy(cp, (caddr_t) tl, xfer); 3801541Srgrimes m1->m_len = len+tlen; 3811541Srgrimes siz -= xfer; 3821541Srgrimes cp += xfer; 3831541Srgrimes } 3841541Srgrimes *mb = m1; 3851541Srgrimes *bpos = mtod(m1, caddr_t)+m1->m_len; 3861541Srgrimes return (0); 3871541Srgrimes} 3881541Srgrimes 3891541Srgrimes/* 3901541Srgrimes * Called once to initialize data structures... 3911541Srgrimes */ 3921549Srgrimesint 39383651Speternfs_init(struct vfsconf *vfsp) 3941541Srgrimes{ 39583651Speter int i; 3961541Srgrimes 39792783Sjeff nfsmount_zone = uma_zcreate("NFSMOUNT", sizeof(struct nfsmount), 39892783Sjeff NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); 3991541Srgrimes rpc_vers = txdr_unsigned(RPC_VER2); 4001541Srgrimes rpc_call = txdr_unsigned(RPC_CALL); 4011541Srgrimes rpc_reply = txdr_unsigned(RPC_REPLY); 4021541Srgrimes rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 4031541Srgrimes rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 4041541Srgrimes rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 4051541Srgrimes rpc_autherr = txdr_unsigned(RPC_AUTHERR); 4061541Srgrimes rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 4071541Srgrimes nfs_true = txdr_unsigned(TRUE); 4081541Srgrimes nfs_false = txdr_unsigned(FALSE); 4093664Sphk nfs_xdrneg1 = txdr_unsigned(-1); 4109336Sdfr nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 4119336Sdfr if (nfs_ticks < 1) 4129336Sdfr nfs_ticks = 1; 4131541Srgrimes /* Ensure async daemons disabled */ 41419449Sdfr for (i = 0; i < NFS_MAXASYNCDAEMON; i++) { 41599797Sdillon nfs_iodwant[i] = NULL; 41699797Sdillon nfs_iodmount[i] = NULL; 41719449Sdfr } 4181541Srgrimes nfs_nhinit(); /* Init the nfsnode table */ 4191541Srgrimes 4201541Srgrimes /* 4211541Srgrimes * Initialize reply list and start timer 4221541Srgrimes */ 4233664Sphk TAILQ_INIT(&nfs_reqq); 424148162Sps callout_init(&nfs_callout, CALLOUT_MPSAFE); 425138496Sps mtx_init(&nfs_reqq_mtx, "NFS reqq lock", NULL, MTX_DEF); 426158739Smohans mtx_init(&nfs_iod_mtx, "NFS iod lock", NULL, MTX_DEF); 42716365Sphk 42842957Sdillon nfs_pbuf_freecnt = nswbuf / 2 + 1; 42942957Sdillon 4301549Srgrimes return (0); 4311541Srgrimes} 4321541Srgrimes 43338894Sbdeint 43483651Speternfs_uninit(struct vfsconf *vfsp) 43538894Sbde{ 436128111Speadar int i; 43738894Sbde 438127421Srees callout_stop(&nfs_callout); 439128111Speadar 440128126Smarcel KASSERT(TAILQ_EMPTY(&nfs_reqq), 441128111Speadar ("nfs_uninit: request queue not empty")); 442128111Speadar 443128111Speadar /* 444128111Speadar * Tell all nfsiod processes to exit. Clear nfs_iodmax, and wakeup 445128111Speadar * any sleeping nfsiods so they check nfs_iodmax and exit. 446128111Speadar */ 447158739Smohans mtx_lock(&nfs_iod_mtx); 448128111Speadar nfs_iodmax = 0; 449128111Speadar for (i = 0; i < nfs_numasync; i++) 450128111Speadar if (nfs_iodwant[i]) 451128111Speadar wakeup(&nfs_iodwant[i]); 452128111Speadar /* The last nfsiod to exit will wake us up when nfs_numasync hits 0 */ 453128111Speadar while (nfs_numasync) 454158739Smohans msleep(&nfs_numasync, &nfs_iod_mtx, PWAIT, "ioddie", 0); 455158739Smohans mtx_unlock(&nfs_iod_mtx); 456128111Speadar nfs_nhuninit(); 457128111Speadar uma_zdestroy(nfsmount_zone); 45838894Sbde return (0); 45938894Sbde} 46038894Sbde 461158739Smohansvoid 462158739Smohansnfs_dircookie_lock(struct nfsnode *np) 463158739Smohans{ 464158739Smohans mtx_lock(&np->n_mtx); 465158739Smohans while (np->n_flag & NDIRCOOKIELK) 466158739Smohans (void) msleep(&np->n_flag, &np->n_mtx, PZERO, "nfsdirlk", 0); 467158739Smohans np->n_flag |= NDIRCOOKIELK; 468158739Smohans mtx_unlock(&np->n_mtx); 469158739Smohans} 470158739Smohans 471158739Smohansvoid 472158739Smohansnfs_dircookie_unlock(struct nfsnode *np) 473158739Smohans{ 474158739Smohans mtx_lock(&np->n_mtx); 475158739Smohans np->n_flag &= ~NDIRCOOKIELK; 476158739Smohans wakeup(&np->n_flag); 477158739Smohans mtx_unlock(&np->n_mtx); 478158739Smohans} 479158739Smohans 480158739Smohansint 481158739Smohansnfs_upgrade_vnlock(struct vnode *vp, struct thread *td) 482158739Smohans{ 483158739Smohans int old_lock; 484158739Smohans 485158739Smohans if ((old_lock = VOP_ISLOCKED(vp, td)) != LK_EXCLUSIVE) { 486158739Smohans if (old_lock == LK_SHARED) { 487158739Smohans /* Upgrade to exclusive lock, this might block */ 488158739Smohans vn_lock(vp, LK_UPGRADE | LK_RETRY, td); 489158739Smohans } else { 490158739Smohans vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 491158739Smohans } 492158739Smohans } 493158739Smohans return old_lock; 494158739Smohans} 495158739Smohans 496158739Smohansvoid 497158739Smohansnfs_downgrade_vnlock(struct vnode *vp, struct thread *td, int old_lock) 498158739Smohans{ 499158739Smohans if (old_lock != LK_EXCLUSIVE) { 500158739Smohans if (old_lock == LK_SHARED) { 501158739Smohans /* Downgrade from exclusive lock, this might block */ 502158739Smohans vn_lock(vp, LK_DOWNGRADE, td); 503158739Smohans } else { 504158739Smohans VOP_UNLOCK(vp, 0, td); 505158739Smohans } 506158739Smohans } 507158739Smohans} 508158739Smohans 509158739Smohansvoid 510158739Smohansnfs_printf(const char *fmt, ...) 511158739Smohans{ 512158739Smohans va_list ap; 513158739Smohans 514158739Smohans mtx_lock(&Giant); 515158739Smohans va_start(ap, fmt); 516158739Smohans printf(fmt, ap); 517158739Smohans va_end(ap); 518158739Smohans mtx_unlock(&Giant); 519158739Smohans} 520158739Smohans 5211541Srgrimes/* 5221541Srgrimes * Attribute cache routines. 5231541Srgrimes * nfs_loadattrcache() - loads or updates the cache contents from attributes 5241541Srgrimes * that are on the mbuf list 5251541Srgrimes * nfs_getattrcache() - returns valid attributes if found in cache, returns 5261541Srgrimes * error otherwise 5271541Srgrimes */ 5281541Srgrimes 5291541Srgrimes/* 5301541Srgrimes * Load the attribute cache (that lives in the nfsnode entry) with 5311541Srgrimes * the values on the mbuf list and 5321541Srgrimes * Iff vap not NULL 5331541Srgrimes * copy the attributes to *vaper 5341541Srgrimes */ 5351549Srgrimesint 53683651Speternfs_loadattrcache(struct vnode **vpp, struct mbuf **mdp, caddr_t *dposp, 537158739Smohans struct vattr *vaper, int dontshrink) 5381541Srgrimes{ 53983651Speter struct vnode *vp = *vpp; 54083651Speter struct vattr *vap; 54183651Speter struct nfs_fattr *fp; 54283651Speter struct nfsnode *np; 54383651Speter int32_t t1; 5449336Sdfr caddr_t cp2; 54584057Speter int rdev; 5461541Srgrimes struct mbuf *md; 5471541Srgrimes enum vtype vtyp; 5481541Srgrimes u_short vmode; 549171190Sjhb struct timespec mtime, mtime_save; 5509336Sdfr int v3 = NFS_ISV3(vp); 551167352Smohans struct thread *td = curthread; 5521541Srgrimes 5531541Srgrimes md = *mdp; 5549336Sdfr t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 555138463Sps cp2 = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, M_TRYWAIT); 55684057Speter if (cp2 == NULL) 55784057Speter return EBADRPC; 5589336Sdfr fp = (struct nfs_fattr *)cp2; 5599336Sdfr if (v3) { 5609336Sdfr vtyp = nfsv3tov_type(fp->fa_type); 5619336Sdfr vmode = fxdr_unsigned(u_short, fp->fa_mode); 562130640Sphk rdev = makedev(fxdr_unsigned(int, fp->fa3_rdev.specdata1), 56316634Sbde fxdr_unsigned(int, fp->fa3_rdev.specdata2)); 5649336Sdfr fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 5651541Srgrimes } else { 5669336Sdfr vtyp = nfsv2tov_type(fp->fa_type); 5679336Sdfr vmode = fxdr_unsigned(u_short, fp->fa_mode); 5689336Sdfr /* 5699336Sdfr * XXX 5709336Sdfr * 5719336Sdfr * The duplicate information returned in fa_type and fa_mode 5729336Sdfr * is an ambiguity in the NFS version 2 protocol. 5739336Sdfr * 5749336Sdfr * VREG should be taken literally as a regular file. If a 5759336Sdfr * server intents to return some type information differently 5769336Sdfr * in the upper bits of the mode field (e.g. for sockets, or 5779336Sdfr * FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we 5789336Sdfr * leave the examination of the mode bits even in the VREG 5799336Sdfr * case to avoid breakage for bogus servers, but we make sure 5809336Sdfr * that there are actually type bits set in the upper part of 5819336Sdfr * fa_mode (and failing that, trust the va_type field). 5829336Sdfr * 5839336Sdfr * NFSv3 cleared the issue, and requires fa_mode to not 5849336Sdfr * contain any type information (while also introduing sockets 5859336Sdfr * and FIFOs for fa_type). 5869336Sdfr */ 5879336Sdfr if (vtyp == VNON || (vtyp == VREG && (vmode & S_IFMT) != 0)) 5889336Sdfr vtyp = IFTOVT(vmode); 58936541Speter rdev = fxdr_unsigned(int32_t, fp->fa2_rdev); 5909336Sdfr fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 5919336Sdfr 5929336Sdfr /* 5939336Sdfr * Really ugly NFSv2 kludge. 5949336Sdfr */ 5959336Sdfr if (vtyp == VCHR && rdev == 0xffffffff) 5969336Sdfr vtyp = VFIFO; 5971541Srgrimes } 5989336Sdfr 5991541Srgrimes /* 6001541Srgrimes * If v_type == VNON it is a new node, so fill in the v_type, 6018876Srgrimes * n_mtime fields. Check to see if it represents a special 6021541Srgrimes * device, and if so, check for a possible alias. Once the 6031541Srgrimes * correct vnode has been obtained, fill in the rest of the 6041541Srgrimes * information. 6051541Srgrimes */ 6061541Srgrimes np = VTONFS(vp); 607158739Smohans mtx_lock(&np->n_mtx); 60810219Sdfr if (vp->v_type != vtyp) { 6099336Sdfr vp->v_type = vtyp; 610126851Sphk if (vp->v_type == VFIFO) 611138290Sphk vp->v_op = &nfs_fifoops; 612138473Sps np->n_mtime = mtime; 6131541Srgrimes } 6141541Srgrimes vap = &np->n_vattr; 6151541Srgrimes vap->va_type = vtyp; 6161541Srgrimes vap->va_mode = (vmode & 07777); 61747028Sphk vap->va_rdev = rdev; 618171190Sjhb mtime_save = vap->va_mtime; 6191541Srgrimes vap->va_mtime = mtime; 6201541Srgrimes vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 6219336Sdfr if (v3) { 6229336Sdfr vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 6239336Sdfr vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 6249336Sdfr vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 62547751Speter vap->va_size = fxdr_hyper(&fp->fa3_size); 6269336Sdfr vap->va_blocksize = NFS_FABLKSIZE; 62747751Speter vap->va_bytes = fxdr_hyper(&fp->fa3_used); 62836541Speter vap->va_fileid = fxdr_unsigned(int32_t, 62936541Speter fp->fa3_fileid.nfsuquad[1]); 6309336Sdfr fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 6319336Sdfr fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 6329336Sdfr vap->va_flags = 0; 6339336Sdfr vap->va_filerev = 0; 6341541Srgrimes } else { 6359336Sdfr vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 6369336Sdfr vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 6379336Sdfr vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 63836541Speter vap->va_size = fxdr_unsigned(u_int32_t, fp->fa2_size); 63936541Speter vap->va_blocksize = fxdr_unsigned(int32_t, fp->fa2_blocksize); 64047751Speter vap->va_bytes = (u_quad_t)fxdr_unsigned(int32_t, fp->fa2_blocks) 64136541Speter * NFS_FABLKSIZE; 64236541Speter vap->va_fileid = fxdr_unsigned(int32_t, fp->fa2_fileid); 6439336Sdfr fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 6441541Srgrimes vap->va_flags = 0; 64536541Speter vap->va_ctime.tv_sec = fxdr_unsigned(u_int32_t, 64636541Speter fp->fa2_ctime.nfsv2_sec); 64718397Snate vap->va_ctime.tv_nsec = 0; 64883651Speter vap->va_gen = fxdr_unsigned(u_int32_t, fp->fa2_ctime.nfsv2_usec); 6491541Srgrimes vap->va_filerev = 0; 6501541Srgrimes } 65167486Sdwmalone np->n_attrstamp = time_second; 652167352Smohans /* Timestamp the NFS otw getattr fetch */ 653167352Smohans if (td->td_proc) { 654167352Smohans np->n_ac_ts_tid = td->td_tid; 655167352Smohans np->n_ac_ts_pid = td->td_proc->p_pid; 656167352Smohans np->n_ac_ts_syscalls = td->td_syscalls; 657167352Smohans } else 658167352Smohans bzero(&np->n_ac_ts, sizeof(struct nfs_attrcache_timestamp)); 659167352Smohans 6601541Srgrimes if (vap->va_size != np->n_size) { 6611541Srgrimes if (vap->va_type == VREG) { 66267486Sdwmalone if (dontshrink && vap->va_size < np->n_size) { 66367486Sdwmalone /* 66467486Sdwmalone * We've been told not to shrink the file; 66567486Sdwmalone * zero np->n_attrstamp to indicate that 66667486Sdwmalone * the attributes are stale. 66767486Sdwmalone */ 66867486Sdwmalone vap->va_size = np->n_size; 66967486Sdwmalone np->n_attrstamp = 0; 67067486Sdwmalone } else if (np->n_flag & NMODIFIED) { 671128263Speadar /* 672128263Speadar * We've modified the file: Use the larger 673128263Speadar * of our size, and the server's size. 674128263Speadar */ 675128263Speadar if (vap->va_size < np->n_size) { 6761541Srgrimes vap->va_size = np->n_size; 677128263Speadar } else { 6781541Srgrimes np->n_size = vap->va_size; 679128263Speadar np->n_flag |= NSIZECHANGED; 680128263Speadar } 68154480Sdillon } else { 6821541Srgrimes np->n_size = vap->va_size; 683128263Speadar np->n_flag |= NSIZECHANGED; 68454480Sdillon } 68541026Speter vnode_pager_setsize(vp, np->n_size); 68654480Sdillon } else { 6871541Srgrimes np->n_size = vap->va_size; 68854480Sdillon } 6891541Srgrimes } 690171190Sjhb /* 691171190Sjhb * The following checks are added to prevent a race between (say) 692171190Sjhb * a READDIR+ and a WRITE. 693171190Sjhb * READDIR+, WRITE requests sent out. 694171190Sjhb * READDIR+ resp, WRITE resp received on client. 695171190Sjhb * However, the WRITE resp was handled before the READDIR+ resp 696171190Sjhb * causing the post op attrs from the write to be loaded first 697171190Sjhb * and the attrs from the READDIR+ to be loaded later. If this 698171190Sjhb * happens, we have stale attrs loaded into the attrcache. 699171190Sjhb * We detect this by for the mtime moving back. We invalidate the 700171190Sjhb * attrcache when this happens. 701171190Sjhb */ 702171190Sjhb if (timespeccmp(&mtime_save, &vap->va_mtime, >)) 703171190Sjhb /* Size changed or mtime went backwards */ 704171190Sjhb np->n_attrstamp = 0; 7051541Srgrimes if (vaper != NULL) { 7061541Srgrimes bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 7071541Srgrimes if (np->n_flag & NCHG) { 7089336Sdfr if (np->n_flag & NACC) 7099336Sdfr vaper->va_atime = np->n_atim; 7109336Sdfr if (np->n_flag & NUPD) 7119336Sdfr vaper->va_mtime = np->n_mtim; 7121541Srgrimes } 7131541Srgrimes } 714158739Smohans mtx_unlock(&np->n_mtx); 7151541Srgrimes return (0); 7161541Srgrimes} 7171541Srgrimes 71836176Speter#ifdef NFS_ACDEBUG 71936176Speter#include <sys/sysctl.h> 72044101SbdeSYSCTL_DECL(_vfs_nfs); 72136176Speterstatic int nfs_acdebug; 72236176SpeterSYSCTL_INT(_vfs_nfs, OID_AUTO, acdebug, CTLFLAG_RW, &nfs_acdebug, 0, ""); 72336176Speter#endif 72436176Speter 7251541Srgrimes/* 7261541Srgrimes * Check the time stamp 7271541Srgrimes * If the cache is valid, copy contents to *vap and return 0 7281541Srgrimes * otherwise return an error 7291541Srgrimes */ 7301549Srgrimesint 73183651Speternfs_getattrcache(struct vnode *vp, struct vattr *vaper) 7321541Srgrimes{ 73383651Speter struct nfsnode *np; 73483651Speter struct vattr *vap; 73536176Speter struct nfsmount *nmp; 73636176Speter int timeo; 737158739Smohans 73836176Speter np = VTONFS(vp); 73936176Speter vap = &np->n_vattr; 74036176Speter nmp = VFSTONFS(vp->v_mount); 741158739Smohans#ifdef NFS_ACDEBUG 742158739Smohans mtx_lock(&Giant); /* nfs_printf() */ 743158739Smohans#endif 744158739Smohans mtx_lock(&np->n_mtx); 74536176Speter /* XXX n_mtime doesn't seem to be updated on a miss-and-reload */ 746138473Sps timeo = (time_second - np->n_mtime.tv_sec) / 10; 74736176Speter 74836176Speter#ifdef NFS_ACDEBUG 74936176Speter if (nfs_acdebug>1) 750158739Smohans nfs_printf("nfs_getattrcache: initial timeo = %d\n", timeo); 75136176Speter#endif 75236176Speter 75336176Speter if (vap->va_type == VDIR) { 75436176Speter if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acdirmin) 75536176Speter timeo = nmp->nm_acdirmin; 75636176Speter else if (timeo > nmp->nm_acdirmax) 75736176Speter timeo = nmp->nm_acdirmax; 75836176Speter } else { 75936176Speter if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acregmin) 76036176Speter timeo = nmp->nm_acregmin; 76136176Speter else if (timeo > nmp->nm_acregmax) 76236176Speter timeo = nmp->nm_acregmax; 76336176Speter } 76436176Speter 76536176Speter#ifdef NFS_ACDEBUG 76636176Speter if (nfs_acdebug > 2) 767158739Smohans nfs_printf("acregmin %d; acregmax %d; acdirmin %d; acdirmax %d\n", 768158739Smohans nmp->nm_acregmin, nmp->nm_acregmax, 769158739Smohans nmp->nm_acdirmin, nmp->nm_acdirmax); 77036176Speter 77136176Speter if (nfs_acdebug) 772158739Smohans nfs_printf("nfs_getattrcache: age = %d; final timeo = %d\n", 773158739Smohans (time_second - np->n_attrstamp), timeo); 77436176Speter#endif 77536176Speter 77636176Speter if ((time_second - np->n_attrstamp) >= timeo) { 7771541Srgrimes nfsstats.attrcache_misses++; 778158739Smohans mtx_unlock(&np->n_mtx); 779158739Smohans return( ENOENT); 7801541Srgrimes } 7811541Srgrimes nfsstats.attrcache_hits++; 7821541Srgrimes if (vap->va_size != np->n_size) { 7831541Srgrimes if (vap->va_type == VREG) { 7841541Srgrimes if (np->n_flag & NMODIFIED) { 7851541Srgrimes if (vap->va_size < np->n_size) 7861541Srgrimes vap->va_size = np->n_size; 7871541Srgrimes else 7881541Srgrimes np->n_size = vap->va_size; 78954480Sdillon } else { 7901541Srgrimes np->n_size = vap->va_size; 79154480Sdillon } 79241026Speter vnode_pager_setsize(vp, np->n_size); 79354480Sdillon } else { 7941541Srgrimes np->n_size = vap->va_size; 79554480Sdillon } 7961541Srgrimes } 7971541Srgrimes bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr)); 7981541Srgrimes if (np->n_flag & NCHG) { 7999336Sdfr if (np->n_flag & NACC) 8009336Sdfr vaper->va_atime = np->n_atim; 8019336Sdfr if (np->n_flag & NUPD) 8029336Sdfr vaper->va_mtime = np->n_mtim; 8031541Srgrimes } 804158739Smohans mtx_unlock(&np->n_mtx); 805158739Smohans#ifdef NFS_ACDEBUG 806158739Smohans mtx_unlock(&Giant); /* nfs_printf() */ 807158739Smohans#endif 8081541Srgrimes return (0); 8091541Srgrimes} 8101541Srgrimes 81143305Sdillonstatic nfsuint64 nfs_nullcookie = { { 0, 0 } }; 8129336Sdfr/* 8139336Sdfr * This function finds the directory cookie that corresponds to the 8149336Sdfr * logical byte offset given. 8159336Sdfr */ 8169336Sdfrnfsuint64 * 81783651Speternfs_getcookie(struct nfsnode *np, off_t off, int add) 8189336Sdfr{ 81983651Speter struct nfsdmap *dp, *dp2; 82083651Speter int pos; 821158739Smohans nfsuint64 *retval = NULL; 822158739Smohans 82336979Sbde pos = (uoff_t)off / NFS_DIRBLKSIZ; 82436979Sbde if (pos == 0 || off < 0) { 8259336Sdfr#ifdef DIAGNOSTIC 8269336Sdfr if (add) 82736979Sbde panic("nfs getcookie add at <= 0"); 8289336Sdfr#endif 8299336Sdfr return (&nfs_nullcookie); 8309336Sdfr } 8319336Sdfr pos--; 83283651Speter dp = LIST_FIRST(&np->n_cookies); 8339336Sdfr if (!dp) { 8349336Sdfr if (add) { 8359336Sdfr MALLOC(dp, struct nfsdmap *, sizeof (struct nfsdmap), 836111119Simp M_NFSDIROFF, M_WAITOK); 8379336Sdfr dp->ndm_eocookie = 0; 8389336Sdfr LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list); 8399336Sdfr } else 840158739Smohans goto out; 8419336Sdfr } 8429336Sdfr while (pos >= NFSNUMCOOKIES) { 8439336Sdfr pos -= NFSNUMCOOKIES; 84483651Speter if (LIST_NEXT(dp, ndm_list)) { 8459336Sdfr if (!add && dp->ndm_eocookie < NFSNUMCOOKIES && 846158739Smohans pos >= dp->ndm_eocookie) 847158739Smohans goto out; 84883651Speter dp = LIST_NEXT(dp, ndm_list); 8499336Sdfr } else if (add) { 8509336Sdfr MALLOC(dp2, struct nfsdmap *, sizeof (struct nfsdmap), 851111119Simp M_NFSDIROFF, M_WAITOK); 8529336Sdfr dp2->ndm_eocookie = 0; 8539336Sdfr LIST_INSERT_AFTER(dp, dp2, ndm_list); 8549336Sdfr dp = dp2; 8559336Sdfr } else 856158739Smohans goto out; 8579336Sdfr } 8589336Sdfr if (pos >= dp->ndm_eocookie) { 8599336Sdfr if (add) 8609336Sdfr dp->ndm_eocookie = pos + 1; 8619336Sdfr else 862158739Smohans goto out; 8639336Sdfr } 864158739Smohans retval = &dp->ndm_cookies[pos]; 865158739Smohansout: 866158739Smohans return (retval); 8679336Sdfr} 8689336Sdfr 8699336Sdfr/* 8709336Sdfr * Invalidate cached directory information, except for the actual directory 8719336Sdfr * blocks (which are invalidated separately). 8729336Sdfr * Done mainly to avoid the use of stale offset cookies. 8739336Sdfr */ 8749336Sdfrvoid 87583651Speternfs_invaldir(struct vnode *vp) 8769336Sdfr{ 87783651Speter struct nfsnode *np = VTONFS(vp); 8789336Sdfr 8799336Sdfr#ifdef DIAGNOSTIC 8809336Sdfr if (vp->v_type != VDIR) 8819336Sdfr panic("nfs: invaldir not dir"); 8829336Sdfr#endif 883158739Smohans nfs_dircookie_lock(np); 8849336Sdfr np->n_direofoffset = 0; 8859336Sdfr np->n_cookieverf.nfsuquad[0] = 0; 8869336Sdfr np->n_cookieverf.nfsuquad[1] = 0; 88783651Speter if (LIST_FIRST(&np->n_cookies)) 88883651Speter LIST_FIRST(&np->n_cookies)->ndm_eocookie = 0; 889158739Smohans nfs_dircookie_unlock(np); 8909336Sdfr} 8919336Sdfr 8929336Sdfr/* 8939336Sdfr * The write verifier has changed (probably due to a server reboot), so all 8949336Sdfr * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 8959336Sdfr * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 89654480Sdillon * and B_CLUSTEROK flags. Once done the new write verifier can be set for the 89754480Sdillon * mount point. 89854480Sdillon * 89983651Speter * B_CLUSTEROK must be cleared along with B_NEEDCOMMIT because stage 1 data 90054480Sdillon * writes are not clusterable. 9019336Sdfr */ 9029336Sdfrvoid 90383651Speternfs_clearcommit(struct mount *mp) 9049336Sdfr{ 90583651Speter struct vnode *vp, *nvp; 90683651Speter struct buf *bp, *nbp; 9079336Sdfr int s; 9089336Sdfr 9099336Sdfr s = splbio(); 910122091Skan MNT_ILOCK(mp); 911131551Sphk MNT_VNODE_FOREACH(vp, mp, nvp) { 912103939Sjeff VI_LOCK(vp); 913143510Sjeff if (vp->v_iflag & VI_DOOMED) { 914120787Sjeff VI_UNLOCK(vp); 915120787Sjeff continue; 916120787Sjeff } 917122091Skan MNT_IUNLOCK(mp); 918136767Sphk TAILQ_FOREACH_SAFE(bp, &vp->v_bufobj.bo_dirty.bv_hd, b_bobufs, nbp) { 91948225Smckusick if (BUF_REFCNT(bp) == 0 && 92048225Smckusick (bp->b_flags & (B_DELWRI | B_NEEDCOMMIT)) 9219336Sdfr == (B_DELWRI | B_NEEDCOMMIT)) 92254480Sdillon bp->b_flags &= ~(B_NEEDCOMMIT | B_CLUSTEROK); 9239336Sdfr } 924103939Sjeff VI_UNLOCK(vp); 925122091Skan MNT_ILOCK(mp); 9269336Sdfr } 927122091Skan MNT_IUNLOCK(mp); 9289336Sdfr splx(s); 9299336Sdfr} 9309336Sdfr 9319336Sdfr/* 93283651Speter * Helper functions for former macros. Some of these should be 93383651Speter * moved to their callers. 9349336Sdfr */ 93583651Speter 9365455Sdgint 93783651Speternfsm_mtofh_xx(struct vnode *d, struct vnode **v, int v3, int *f, 93888091Siedowse struct mbuf **md, caddr_t *dpos) 9399336Sdfr{ 94083651Speter struct nfsnode *ttnp; 94183651Speter struct vnode *ttvp; 94283651Speter nfsfh_t *ttfhp; 94388091Siedowse u_int32_t *tl; 94483651Speter int ttfhsize; 94583651Speter int t1; 9469336Sdfr 94783651Speter if (v3) { 94888091Siedowse tl = nfsm_dissect_xx(NFSX_UNSIGNED, md, dpos); 94988091Siedowse if (tl == NULL) 95084057Speter return EBADRPC; 95188091Siedowse *f = fxdr_unsigned(int, *tl); 95283651Speter } else 95383651Speter *f = 1; 95483651Speter if (*f) { 95588091Siedowse t1 = nfsm_getfh_xx(&ttfhp, &ttfhsize, (v3), md, dpos); 95683651Speter if (t1 != 0) 95783651Speter return t1; 958162288Smohans t1 = nfs_nget(d->v_mount, ttfhp, ttfhsize, &ttnp, LK_EXCLUSIVE); 95983651Speter if (t1 != 0) 96083651Speter return t1; 96183651Speter *v = NFSTOV(ttnp); 96283651Speter } 96383651Speter if (v3) { 96488091Siedowse tl = nfsm_dissect_xx(NFSX_UNSIGNED, md, dpos); 96588091Siedowse if (tl == NULL) 96684057Speter return EBADRPC; 96783651Speter if (*f) 96888091Siedowse *f = fxdr_unsigned(int, *tl); 96988091Siedowse else if (fxdr_unsigned(int, *tl)) 97088091Siedowse nfsm_adv_xx(NFSX_V3FATTR, md, dpos); 97183651Speter } 97283651Speter if (*f) { 97383651Speter ttvp = *v; 97499797Sdillon t1 = nfs_loadattrcache(&ttvp, md, dpos, NULL, 0); 97583651Speter if (t1) 97683651Speter return t1; 97783651Speter *v = ttvp; 97883651Speter } 97983651Speter return 0; 98083651Speter} 98183651Speter 98283651Speterint 98388091Siedowsenfsm_getfh_xx(nfsfh_t **f, int *s, int v3, struct mbuf **md, caddr_t *dpos) 98483651Speter{ 98588091Siedowse u_int32_t *tl; 98683651Speter 98783651Speter if (v3) { 98888091Siedowse tl = nfsm_dissect_xx(NFSX_UNSIGNED, md, dpos); 98988091Siedowse if (tl == NULL) 99084057Speter return EBADRPC; 99188091Siedowse *s = fxdr_unsigned(int, *tl); 99284057Speter if (*s <= 0 || *s > NFSX_V3FHMAX) 99383651Speter return EBADRPC; 99483651Speter } else 99583651Speter *s = NFSX_V2FH; 99684057Speter *f = nfsm_dissect_xx(nfsm_rndup(*s), md, dpos); 99784057Speter if (*f == NULL) 99884057Speter return EBADRPC; 99984057Speter else 100084057Speter return 0; 100183651Speter} 100283651Speter 100383651Speter 100483651Speterint 100588091Siedowsenfsm_loadattr_xx(struct vnode **v, struct vattr *va, struct mbuf **md, 1006158739Smohans caddr_t *dpos) 100783651Speter{ 100883651Speter int t1; 100983651Speter 101083651Speter struct vnode *ttvp = *v; 101183651Speter t1 = nfs_loadattrcache(&ttvp, md, dpos, va, 0); 101283651Speter if (t1 != 0) 101383651Speter return t1; 101483651Speter *v = ttvp; 101583651Speter return 0; 101683651Speter} 101783651Speter 101883651Speterint 101988091Siedowsenfsm_postop_attr_xx(struct vnode **v, int *f, struct mbuf **md, 1020158739Smohans caddr_t *dpos) 102183651Speter{ 102288091Siedowse u_int32_t *tl; 102383651Speter int t1; 102483651Speter 102583651Speter struct vnode *ttvp = *v; 102688091Siedowse tl = nfsm_dissect_xx(NFSX_UNSIGNED, md, dpos); 102788091Siedowse if (tl == NULL) 102884057Speter return EBADRPC; 102988091Siedowse *f = fxdr_unsigned(int, *tl); 103083914Siedowse if (*f != 0) { 103199797Sdillon t1 = nfs_loadattrcache(&ttvp, md, dpos, NULL, 1); 103283651Speter if (t1 != 0) { 103383651Speter *f = 0; 103483651Speter return t1; 103583651Speter } 103683651Speter *v = ttvp; 10379336Sdfr } 103883651Speter return 0; 10399336Sdfr} 10409336Sdfr 10419336Sdfrint 104288091Siedowsenfsm_wcc_data_xx(struct vnode **v, int *f, struct mbuf **md, caddr_t *dpos) 104331886Sbde{ 104488091Siedowse u_int32_t *tl; 104583651Speter int ttattrf, ttretf = 0; 104683651Speter int t1; 10475455Sdg 104888091Siedowse tl = nfsm_dissect_xx(NFSX_UNSIGNED, md, dpos); 104988091Siedowse if (tl == NULL) 105084057Speter return EBADRPC; 105188091Siedowse if (*tl == nfs_true) { 105288091Siedowse tl = nfsm_dissect_xx(6 * NFSX_UNSIGNED, md, dpos); 105388091Siedowse if (tl == NULL) 105484057Speter return EBADRPC; 1055158739Smohans mtx_lock(&(VTONFS(*v))->n_mtx); 105683651Speter if (*f) 1057138473Sps ttretf = (VTONFS(*v)->n_mtime.tv_sec == fxdr_unsigned(u_int32_t, *(tl + 2)) && 1058138473Sps VTONFS(*v)->n_mtime.tv_nsec == fxdr_unsigned(u_int32_t, *(tl + 3))); 1059158739Smohans mtx_unlock(&(VTONFS(*v))->n_mtx); 106083651Speter } 106188091Siedowse t1 = nfsm_postop_attr_xx(v, &ttattrf, md, dpos); 106283651Speter if (t1) 106383651Speter return t1; 106483651Speter if (*f) 106583651Speter *f = ttretf; 106683651Speter else 106783651Speter *f = ttattrf; 106883651Speter return 0; 10695455Sdg} 107036503Speter 107183651Speterint 107288091Siedowsenfsm_strtom_xx(const char *a, int s, int m, struct mbuf **mb, caddr_t *bpos) 107336503Speter{ 107488091Siedowse u_int32_t *tl; 107583651Speter int t1; 107636503Speter 107783651Speter if (s > m) 107883651Speter return ENAMETOOLONG; 107983651Speter t1 = nfsm_rndup(s) + NFSX_UNSIGNED; 108083651Speter if (t1 <= M_TRAILINGSPACE(*mb)) { 108188091Siedowse tl = nfsm_build_xx(t1, mb, bpos); 108288091Siedowse *tl++ = txdr_unsigned(s); 108388091Siedowse *(tl + ((t1 >> 2) - 2)) = 0; 108488091Siedowse bcopy(a, tl, s); 108583651Speter } else { 108683651Speter t1 = nfsm_strtmbuf(mb, bpos, a, s); 108783651Speter if (t1 != 0) 108883651Speter return t1; 108936503Speter } 109083651Speter return 0; 109136503Speter} 109236503Speter 109383651Speterint 109488091Siedowsenfsm_fhtom_xx(struct vnode *v, int v3, struct mbuf **mb, caddr_t *bpos) 109583651Speter{ 109688091Siedowse u_int32_t *tl; 109783651Speter int t1; 109883651Speter caddr_t cp; 109983651Speter 110083651Speter if (v3) { 110183651Speter t1 = nfsm_rndup(VTONFS(v)->n_fhsize) + NFSX_UNSIGNED; 110283651Speter if (t1 < M_TRAILINGSPACE(*mb)) { 110388091Siedowse tl = nfsm_build_xx(t1, mb, bpos); 110488091Siedowse *tl++ = txdr_unsigned(VTONFS(v)->n_fhsize); 110588091Siedowse *(tl + ((t1 >> 2) - 2)) = 0; 110688091Siedowse bcopy(VTONFS(v)->n_fhp, tl, VTONFS(v)->n_fhsize); 110783651Speter } else { 110883651Speter t1 = nfsm_strtmbuf(mb, bpos, 110983651Speter (const char *)VTONFS(v)->n_fhp, 111083651Speter VTONFS(v)->n_fhsize); 111183651Speter if (t1 != 0) 111283651Speter return t1; 111383651Speter } 111483651Speter } else { 111584002Speter cp = nfsm_build_xx(NFSX_V2FH, mb, bpos); 111683651Speter bcopy(VTONFS(v)->n_fhp, cp, NFSX_V2FH); 111783651Speter } 111883651Speter return 0; 111983651Speter} 112083651Speter 112136503Spetervoid 112288091Siedowsenfsm_v3attrbuild_xx(struct vattr *va, int full, struct mbuf **mb, 112388091Siedowse caddr_t *bpos) 112436503Speter{ 112588091Siedowse u_int32_t *tl; 112636503Speter 112783651Speter if (va->va_mode != (mode_t)VNOVAL) { 112888091Siedowse tl = nfsm_build_xx(2 * NFSX_UNSIGNED, mb, bpos); 112988091Siedowse *tl++ = nfs_true; 113088091Siedowse *tl = txdr_unsigned(va->va_mode); 113183651Speter } else { 113288091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 113388091Siedowse *tl = nfs_false; 113483651Speter } 113583651Speter if (full && va->va_uid != (uid_t)VNOVAL) { 113688091Siedowse tl = nfsm_build_xx(2 * NFSX_UNSIGNED, mb, bpos); 113788091Siedowse *tl++ = nfs_true; 113888091Siedowse *tl = txdr_unsigned(va->va_uid); 113983651Speter } else { 114088091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 114188091Siedowse *tl = nfs_false; 114283651Speter } 114383651Speter if (full && va->va_gid != (gid_t)VNOVAL) { 114488091Siedowse tl = nfsm_build_xx(2 * NFSX_UNSIGNED, mb, bpos); 114588091Siedowse *tl++ = nfs_true; 114688091Siedowse *tl = txdr_unsigned(va->va_gid); 114783651Speter } else { 114888091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 114988091Siedowse *tl = nfs_false; 115083651Speter } 115183651Speter if (full && va->va_size != VNOVAL) { 115288091Siedowse tl = nfsm_build_xx(3 * NFSX_UNSIGNED, mb, bpos); 115388091Siedowse *tl++ = nfs_true; 115488091Siedowse txdr_hyper(va->va_size, tl); 115583651Speter } else { 115688091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 115788091Siedowse *tl = nfs_false; 115883651Speter } 115983651Speter if (va->va_atime.tv_sec != VNOVAL) { 116083651Speter if (va->va_atime.tv_sec != time_second) { 116188091Siedowse tl = nfsm_build_xx(3 * NFSX_UNSIGNED, mb, bpos); 116288091Siedowse *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); 116388091Siedowse txdr_nfsv3time(&va->va_atime, tl); 116483651Speter } else { 116588091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 116688091Siedowse *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); 116783651Speter } 116883651Speter } else { 116988091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 117088091Siedowse *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE); 117183651Speter } 117283651Speter if (va->va_mtime.tv_sec != VNOVAL) { 117383651Speter if (va->va_mtime.tv_sec != time_second) { 117488091Siedowse tl = nfsm_build_xx(3 * NFSX_UNSIGNED, mb, bpos); 117588091Siedowse *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); 117688091Siedowse txdr_nfsv3time(&va->va_mtime, tl); 117783651Speter } else { 117888091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 117988091Siedowse *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); 118083651Speter } 118183651Speter } else { 118288091Siedowse tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos); 118388091Siedowse *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE); 118483651Speter } 118536503Speter} 1186