nfs_nfsdkrpc.c

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    1 /*-
    2  * Copyright (c) 1989, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * This code is derived from software contributed to Berkeley by
    6  * Rick Macklem at The University of Guelph.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 4. Neither the name of the University nor the names of its contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  *
   32  */
   33 
   34 #include <sys/cdefs.h>
   35 __FBSDID("$FreeBSD: releng/10.4/sys/fs/nfsserver/nfs_nfsdkrpc.c 314034 2017-02-21 09:29:46Z avg $");
   36 
   37 #include <sys/param.h>
   38 #include <sys/systm.h>
   39 
   40 #include "opt_inet6.h"
   41 #include "opt_kgssapi.h"
   42 
   43 #include <fs/nfs/nfsport.h>
   44 
   45 #include <rpc/rpc.h>
   46 #include <rpc/rpcsec_gss.h>
   47 
   48 #include <nfs/nfs_fha.h>
   49 #include <fs/nfsserver/nfs_fha_new.h>
   50 
   51 #include <security/mac/mac_framework.h>
   52 
   53 NFSDLOCKMUTEX;
   54 NFSV4ROOTLOCKMUTEX;
   55 struct nfsv4lock nfsd_suspend_lock;
   56 
   57 /*
   58  * Mapping of old NFS Version 2 RPC numbers to generic numbers.
   59  */
   60 int newnfs_nfsv3_procid[NFS_V3NPROCS] = {
   61         NFSPROC_NULL,
   62         NFSPROC_GETATTR,
   63         NFSPROC_SETATTR,
   64         NFSPROC_NOOP,
   65         NFSPROC_LOOKUP,
   66         NFSPROC_READLINK,
   67         NFSPROC_READ,
   68         NFSPROC_NOOP,
   69         NFSPROC_WRITE,
   70         NFSPROC_CREATE,
   71         NFSPROC_REMOVE,
   72         NFSPROC_RENAME,
   73         NFSPROC_LINK,
   74         NFSPROC_SYMLINK,
   75         NFSPROC_MKDIR,
   76         NFSPROC_RMDIR,
   77         NFSPROC_READDIR,
   78         NFSPROC_FSSTAT,
   79         NFSPROC_NOOP,
   80         NFSPROC_NOOP,
   81         NFSPROC_NOOP,
   82         NFSPROC_NOOP,
   83 };
   84 
   85 
   86 SYSCTL_DECL(_vfs_nfsd);
   87 
   88 SVCPOOL         *nfsrvd_pool;
   89 
   90 static int      nfs_privport = 0;
   91 SYSCTL_INT(_vfs_nfsd, OID_AUTO, nfs_privport, CTLFLAG_RWTUN,
   92     &nfs_privport, 0,
   93     "Only allow clients using a privileged port for NFSv2 and 3");
   94 
   95 static int      nfs_minvers = NFS_VER2;
   96 SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_min_nfsvers, CTLFLAG_RWTUN,
   97     &nfs_minvers, 0, "The lowest version of NFS handled by the server");
   98 
   99 static int      nfs_maxvers = NFS_VER4;
  100 SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_max_nfsvers, CTLFLAG_RWTUN,
  101     &nfs_maxvers, 0, "The highest version of NFS handled by the server");
  102 
  103 static int nfs_proc(struct nfsrv_descript *, u_int32_t, SVCXPRT *xprt,
  104     struct nfsrvcache **);
  105 
  106 extern u_long sb_max_adj;
  107 extern int newnfs_numnfsd;
  108 extern struct proc *nfsd_master_proc;
  109 
  110 /*
  111  * NFS server system calls
  112  */
  113 
  114 static void
  115 nfssvc_program(struct svc_req *rqst, SVCXPRT *xprt)
  116 {
  117         struct nfsrv_descript nd;
  118         struct nfsrvcache *rp = NULL;
  119         int cacherep, credflavor;
  120 
  121         memset(&nd, 0, sizeof(nd));
  122         if (rqst->rq_vers == NFS_VER2) {
  123                 if (rqst->rq_proc > NFSV2PROC_STATFS ||
  124                     newnfs_nfsv3_procid[rqst->rq_proc] == NFSPROC_NOOP) {
  125                         svcerr_noproc(rqst);
  126                         svc_freereq(rqst);
  127                         goto out;
  128                 }
  129                 nd.nd_procnum = newnfs_nfsv3_procid[rqst->rq_proc];
  130                 nd.nd_flag = ND_NFSV2;
  131         } else if (rqst->rq_vers == NFS_VER3) {
  132                 if (rqst->rq_proc >= NFS_V3NPROCS) {
  133                         svcerr_noproc(rqst);
  134                         svc_freereq(rqst);
  135                         goto out;
  136                 }
  137                 nd.nd_procnum = rqst->rq_proc;
  138                 nd.nd_flag = ND_NFSV3;
  139         } else {
  140                 if (rqst->rq_proc != NFSPROC_NULL &&
  141                     rqst->rq_proc != NFSV4PROC_COMPOUND) {
  142                         svcerr_noproc(rqst);
  143                         svc_freereq(rqst);
  144                         goto out;
  145                 }
  146                 nd.nd_procnum = rqst->rq_proc;
  147                 nd.nd_flag = ND_NFSV4;
  148         }
  149 
  150         /*
  151          * Note: we want rq_addr, not svc_getrpccaller for nd_nam2 -
  152          * NFS_SRVMAXDATA uses a NULL value for nd_nam2 to detect TCP
  153          * mounts.
  154          */
  155         nd.nd_mrep = rqst->rq_args;
  156         rqst->rq_args = NULL;
  157         newnfs_realign(&nd.nd_mrep, M_WAITOK);
  158         nd.nd_md = nd.nd_mrep;
  159         nd.nd_dpos = mtod(nd.nd_md, caddr_t);
  160         nd.nd_nam = svc_getrpccaller(rqst);
  161         nd.nd_nam2 = rqst->rq_addr;
  162         nd.nd_mreq = NULL;
  163         nd.nd_cred = NULL;
  164 
  165         if (nfs_privport && (nd.nd_flag & ND_NFSV4) == 0) {
  166                 /* Check if source port is privileged */
  167                 u_short port;
  168                 struct sockaddr *nam = nd.nd_nam;
  169                 struct sockaddr_in *sin;
  170 
  171                 sin = (struct sockaddr_in *)nam;
  172                 /*
  173                  * INET/INET6 - same code:
  174                  *    sin_port and sin6_port are at same offset
  175                  */
  176                 port = ntohs(sin->sin_port);
  177                 if (port >= IPPORT_RESERVED &&
  178                     nd.nd_procnum != NFSPROC_NULL) {
  179 #ifdef INET6
  180                         char b6[INET6_ADDRSTRLEN];
  181 #if defined(KLD_MODULE)
  182                         /* Do not use ip6_sprintf: the nfs module should work without INET6. */
  183 #define ip6_sprintf(buf, a)                                             \
  184                         (sprintf((buf), "%x:%x:%x:%x:%x:%x:%x:%x",      \
  185                             (a)->s6_addr16[0], (a)->s6_addr16[1],       \
  186                             (a)->s6_addr16[2], (a)->s6_addr16[3],       \
  187                             (a)->s6_addr16[4], (a)->s6_addr16[5],       \
  188                             (a)->s6_addr16[6], (a)->s6_addr16[7]),      \
  189                             (buf))
  190 #endif
  191 #endif
  192                         printf("NFS request from unprivileged port (%s:%d)\n",
  193 #ifdef INET6
  194                             sin->sin_family == AF_INET6 ?
  195                             ip6_sprintf(b6, &satosin6(sin)->sin6_addr) :
  196 #if defined(KLD_MODULE)
  197 #undef ip6_sprintf
  198 #endif
  199 #endif
  200                             inet_ntoa(sin->sin_addr), port);
  201                         svcerr_weakauth(rqst);
  202                         svc_freereq(rqst);
  203                         m_freem(nd.nd_mrep);
  204                         goto out;
  205                 }
  206         }
  207 
  208         if (nd.nd_procnum != NFSPROC_NULL) {
  209                 if (!svc_getcred(rqst, &nd.nd_cred, &credflavor)) {
  210                         svcerr_weakauth(rqst);
  211                         svc_freereq(rqst);
  212                         m_freem(nd.nd_mrep);
  213                         goto out;
  214                 }
  215 
  216                 /* Set the flag based on credflavor */
  217                 if (credflavor == RPCSEC_GSS_KRB5) {
  218                         nd.nd_flag |= ND_GSS;
  219                 } else if (credflavor == RPCSEC_GSS_KRB5I) {
  220                         nd.nd_flag |= (ND_GSS | ND_GSSINTEGRITY);
  221                 } else if (credflavor == RPCSEC_GSS_KRB5P) {
  222                         nd.nd_flag |= (ND_GSS | ND_GSSPRIVACY);
  223                 } else if (credflavor != AUTH_SYS) {
  224                         svcerr_weakauth(rqst);
  225                         svc_freereq(rqst);
  226                         m_freem(nd.nd_mrep);
  227                         goto out;
  228                 }
  229 
  230 #ifdef MAC
  231                 mac_cred_associate_nfsd(nd.nd_cred);
  232 #endif
  233                 /*
  234                  * Get a refcnt (shared lock) on nfsd_suspend_lock.
  235                  * NFSSVC_SUSPENDNFSD will take an exclusive lock on
  236                  * nfsd_suspend_lock to suspend these threads.
  237                  * The call to nfsv4_lock() that preceeds nfsv4_getref()
  238                  * ensures that the acquisition of the exclusive lock
  239                  * takes priority over acquisition of the shared lock by
  240                  * waiting for any exclusive lock request to complete.
  241                  * This must be done here, before the check of
  242                  * nfsv4root exports by nfsvno_v4rootexport().
  243                  */
  244                 NFSLOCKV4ROOTMUTEX();
  245                 nfsv4_lock(&nfsd_suspend_lock, 0, NULL, NFSV4ROOTLOCKMUTEXPTR,
  246                     NULL);
  247                 nfsv4_getref(&nfsd_suspend_lock, NULL, NFSV4ROOTLOCKMUTEXPTR,
  248                     NULL);
  249                 NFSUNLOCKV4ROOTMUTEX();
  250 
  251                 if ((nd.nd_flag & ND_NFSV4) != 0) {
  252                         nd.nd_repstat = nfsvno_v4rootexport(&nd);
  253                         if (nd.nd_repstat != 0) {
  254                                 NFSLOCKV4ROOTMUTEX();
  255                                 nfsv4_relref(&nfsd_suspend_lock);
  256                                 NFSUNLOCKV4ROOTMUTEX();
  257                                 svcerr_weakauth(rqst);
  258                                 svc_freereq(rqst);
  259                                 m_freem(nd.nd_mrep);
  260                                 goto out;
  261                         }
  262                 }
  263 
  264                 cacherep = nfs_proc(&nd, rqst->rq_xid, xprt, &rp);
  265                 NFSLOCKV4ROOTMUTEX();
  266                 nfsv4_relref(&nfsd_suspend_lock);
  267                 NFSUNLOCKV4ROOTMUTEX();
  268         } else {
  269                 NFSMGET(nd.nd_mreq);
  270                 nd.nd_mreq->m_len = 0;
  271                 cacherep = RC_REPLY;
  272         }
  273         if (nd.nd_mrep != NULL)
  274                 m_freem(nd.nd_mrep);
  275 
  276         if (nd.nd_cred != NULL)
  277                 crfree(nd.nd_cred);
  278 
  279         if (cacherep == RC_DROPIT) {
  280                 if (nd.nd_mreq != NULL)
  281                         m_freem(nd.nd_mreq);
  282                 svc_freereq(rqst);
  283                 goto out;
  284         }
  285 
  286         if (nd.nd_mreq == NULL) {
  287                 svcerr_decode(rqst);
  288                 svc_freereq(rqst);
  289                 goto out;
  290         }
  291 
  292         if (nd.nd_repstat & NFSERR_AUTHERR) {
  293                 svcerr_auth(rqst, nd.nd_repstat & ~NFSERR_AUTHERR);
  294                 if (nd.nd_mreq != NULL)
  295                         m_freem(nd.nd_mreq);
  296         } else if (!svc_sendreply_mbuf(rqst, nd.nd_mreq)) {
  297                 svcerr_systemerr(rqst);
  298         }
  299         if (rp != NULL) {
  300                 nfsrvd_sentcache(rp, (rqst->rq_reply_seq != 0 ||
  301                     SVC_ACK(xprt, NULL)), rqst->rq_reply_seq);
  302         }
  303         svc_freereq(rqst);
  304 
  305 out:
  306         if (softdep_ast_cleanup != NULL)
  307                 softdep_ast_cleanup();
  308         NFSEXITCODE(0);
  309 }
  310 
  311 /*
  312  * Check the cache and, optionally, do the RPC.
  313  * Return the appropriate cache response.
  314  */
  315 static int
  316 nfs_proc(struct nfsrv_descript *nd, u_int32_t xid, SVCXPRT *xprt,
  317     struct nfsrvcache **rpp)
  318 {
  319         struct thread *td = curthread;
  320         int cacherep = RC_DOIT, isdgram, taglen = -1;
  321         struct mbuf *m;
  322         u_char tag[NFSV4_SMALLSTR + 1], *tagstr = NULL;
  323         u_int32_t minorvers = 0;
  324         uint32_t ack;
  325 
  326         *rpp = NULL;
  327         if (nd->nd_nam2 == NULL) {
  328                 nd->nd_flag |= ND_STREAMSOCK;
  329                 isdgram = 0;
  330         } else {
  331                 isdgram = 1;
  332         }
  333 
  334         /*
  335          * Two cases:
  336          * 1 - For NFSv2 over UDP, if we are near our malloc/mget
  337          *     limit, just drop the request. There is no
  338          *     NFSERR_RESOURCE or NFSERR_DELAY for NFSv2 and the
  339          *     client will timeout/retry over UDP in a little while.
  340          * 2 - nd_repstat == 0 && nd_mreq == NULL, which
  341          *     means a normal nfs rpc, so check the cache
  342          */
  343         if ((nd->nd_flag & ND_NFSV2) && nd->nd_nam2 != NULL &&
  344             nfsrv_mallocmget_limit()) {
  345                 cacherep = RC_DROPIT;
  346         } else {
  347                 /*
  348                  * For NFSv3, play it safe and assume that the client is
  349                  * doing retries on the same TCP connection.
  350                  */
  351                 if ((nd->nd_flag & (ND_NFSV4 | ND_STREAMSOCK)) ==
  352                     ND_STREAMSOCK)
  353                         nd->nd_flag |= ND_SAMETCPCONN;
  354                 nd->nd_retxid = xid;
  355                 nd->nd_tcpconntime = NFSD_MONOSEC;
  356                 nd->nd_sockref = xprt->xp_sockref;
  357                 if ((nd->nd_flag & ND_NFSV4) != 0)
  358                         nfsd_getminorvers(nd, tag, &tagstr, &taglen,
  359                             &minorvers);
  360                 if ((nd->nd_flag & ND_NFSV41) != 0)
  361                         /* NFSv4.1 caches replies in the session slots. */
  362                         cacherep = RC_DOIT;
  363                 else {
  364                         cacherep = nfsrvd_getcache(nd);
  365                         ack = 0;
  366                         SVC_ACK(xprt, &ack);
  367                         nfsrc_trimcache(xprt->xp_sockref, ack, 0);
  368                 }
  369         }
  370 
  371         /*
  372          * Handle the request. There are three cases.
  373          * RC_DOIT - do the RPC
  374          * RC_REPLY - return the reply already created
  375          * RC_DROPIT - just throw the request away
  376          */
  377         if (cacherep == RC_DOIT) {
  378                 if ((nd->nd_flag & ND_NFSV41) != 0)
  379                         nd->nd_xprt = xprt;
  380                 nfsrvd_dorpc(nd, isdgram, tagstr, taglen, minorvers, td);
  381                 if ((nd->nd_flag & ND_NFSV41) != 0) {
  382                         if (nd->nd_repstat != NFSERR_REPLYFROMCACHE &&
  383                             (nd->nd_flag & ND_SAVEREPLY) != 0) {
  384                                 /* Cache a copy of the reply. */
  385                                 m = m_copym(nd->nd_mreq, 0, M_COPYALL,
  386                                     M_WAITOK);
  387                         } else
  388                                 m = NULL;
  389                         if ((nd->nd_flag & ND_HASSEQUENCE) != 0)
  390                                 nfsrv_cache_session(nd->nd_sessionid,
  391                                     nd->nd_slotid, nd->nd_repstat, &m);
  392                         if (nd->nd_repstat == NFSERR_REPLYFROMCACHE)
  393                                 nd->nd_repstat = 0;
  394                         cacherep = RC_REPLY;
  395                 } else {
  396                         if (nd->nd_repstat == NFSERR_DONTREPLY)
  397                                 cacherep = RC_DROPIT;
  398                         else
  399                                 cacherep = RC_REPLY;
  400                         *rpp = nfsrvd_updatecache(nd);
  401                 }
  402         }
  403         if (tagstr != NULL && taglen > NFSV4_SMALLSTR)
  404                 free(tagstr, M_TEMP);
  405 
  406         NFSEXITCODE2(0, nd);
  407         return (cacherep);
  408 }
  409 
  410 static void
  411 nfssvc_loss(SVCXPRT *xprt)
  412 {
  413         uint32_t ack;
  414 
  415         ack = 0;
  416         SVC_ACK(xprt, &ack);
  417         nfsrc_trimcache(xprt->xp_sockref, ack, 1);
  418 }
  419 
  420 /*
  421  * Adds a socket to the list for servicing by nfsds.
  422  */
  423 int
  424 nfsrvd_addsock(struct file *fp)
  425 {
  426         int siz;
  427         struct socket *so;
  428         int error = 0;
  429         SVCXPRT *xprt;
  430         static u_int64_t sockref = 0;
  431 
  432         so = fp->f_data;
  433 
  434         siz = sb_max_adj;
  435         error = soreserve(so, siz, siz);
  436         if (error)
  437                 goto out;
  438 
  439         /*
  440          * Steal the socket from userland so that it doesn't close
  441          * unexpectedly.
  442          */
  443         if (so->so_type == SOCK_DGRAM)
  444                 xprt = svc_dg_create(nfsrvd_pool, so, 0, 0);
  445         else
  446                 xprt = svc_vc_create(nfsrvd_pool, so, 0, 0);
  447         if (xprt) {
  448                 fp->f_ops = &badfileops;
  449                 fp->f_data = NULL;
  450                 xprt->xp_sockref = ++sockref;
  451                 if (nfs_minvers == NFS_VER2)
  452                         svc_reg(xprt, NFS_PROG, NFS_VER2, nfssvc_program,
  453                             NULL);
  454                 if (nfs_minvers <= NFS_VER3 && nfs_maxvers >= NFS_VER3)
  455                         svc_reg(xprt, NFS_PROG, NFS_VER3, nfssvc_program,
  456                             NULL);
  457                 if (nfs_maxvers >= NFS_VER4)
  458                         svc_reg(xprt, NFS_PROG, NFS_VER4, nfssvc_program,
  459                             NULL);
  460                 if (so->so_type == SOCK_STREAM)
  461                         svc_loss_reg(xprt, nfssvc_loss);
  462                 SVC_RELEASE(xprt);
  463         }
  464 
  465 out:
  466         NFSEXITCODE(error);
  467         return (error);
  468 }
  469 
  470 /*
  471  * Called by nfssvc() for nfsds. Just loops around servicing rpc requests
  472  * until it is killed by a signal.
  473  */
  474 int
  475 nfsrvd_nfsd(struct thread *td, struct nfsd_nfsd_args *args)
  476 {
  477         char principal[MAXHOSTNAMELEN + 5];
  478         struct proc *p;
  479         int error = 0;
  480         bool_t ret2, ret3, ret4;
  481 
  482         error = copyinstr(args->principal, principal, sizeof (principal),
  483             NULL);
  484         if (error)
  485                 goto out;
  486 
  487         /*
  488          * Only the first nfsd actually does any work. The RPC code
  489          * adds threads to it as needed. Any extra processes offered
  490          * by nfsd just exit. If nfsd is new enough, it will call us
  491          * once with a structure that specifies how many threads to
  492          * use.
  493          */
  494         NFSD_LOCK();
  495         if (newnfs_numnfsd == 0) {
  496                 p = td->td_proc;
  497                 PROC_LOCK(p);
  498                 p->p_flag2 |= P2_AST_SU;
  499                 PROC_UNLOCK(p);
  500                 newnfs_numnfsd++;
  501 
  502                 NFSD_UNLOCK();
  503 
  504                 /* An empty string implies AUTH_SYS only. */
  505                 if (principal[0] != '\0') {
  506                         ret2 = rpc_gss_set_svc_name_call(principal,
  507                             "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER2);
  508                         ret3 = rpc_gss_set_svc_name_call(principal,
  509                             "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER3);
  510                         ret4 = rpc_gss_set_svc_name_call(principal,
  511                             "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER4);
  512 
  513                         if (!ret2 || !ret3 || !ret4)
  514                                 printf("nfsd: can't register svc name\n");
  515                 }
  516 
  517                 nfsrvd_pool->sp_minthreads = args->minthreads;
  518                 nfsrvd_pool->sp_maxthreads = args->maxthreads;
  519                         
  520                 svc_run(nfsrvd_pool);
  521 
  522                 if (principal[0] != '\0') {
  523                         rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER2);
  524                         rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER3);
  525                         rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER4);
  526                 }
  527 
  528                 NFSD_LOCK();
  529                 newnfs_numnfsd--;
  530                 nfsrvd_init(1);
  531                 PROC_LOCK(p);
  532                 p->p_flag2 &= ~P2_AST_SU;
  533                 PROC_UNLOCK(p);
  534         }
  535         NFSD_UNLOCK();
  536 
  537 out:
  538         NFSEXITCODE(error);
  539         return (error);
  540 }
  541 
  542 /*
  543  * Initialize the data structures for the server.
  544  * Handshake with any new nfsds starting up to avoid any chance of
  545  * corruption.
  546  */
  547 void
  548 nfsrvd_init(int terminating)
  549 {
  550 
  551         NFSD_LOCK_ASSERT();
  552 
  553         if (terminating) {
  554                 nfsd_master_proc = NULL;
  555                 NFSD_UNLOCK();
  556                 nfsrv_freeallbackchannel_xprts();
  557                 svcpool_close(nfsrvd_pool);
  558                 NFSD_LOCK();
  559         } else {
  560                 NFSD_UNLOCK();
  561                 nfsrvd_pool = svcpool_create("nfsd",
  562                     SYSCTL_STATIC_CHILDREN(_vfs_nfsd));
  563                 nfsrvd_pool->sp_rcache = NULL;
  564                 nfsrvd_pool->sp_assign = fhanew_assign;
  565                 nfsrvd_pool->sp_done = fha_nd_complete;
  566                 NFSD_LOCK();
  567         }
  568 }
  569
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FreeBSD/Linux Kernel Cross Reference sys/fs/nfsserver/nfs_nfsdkrpc.c

FreeBSD/Linux Kernel Cross Reference
sys/fs/nfsserver/nfs_nfsdkrpc.c
