1191783Srmacklem/*- 2191783Srmacklem * Copyright (c) 1989, 1993 3191783Srmacklem * The Regents of the University of California. All rights reserved. 4191783Srmacklem * 5191783Srmacklem * This code is derived from software contributed to Berkeley by 6191783Srmacklem * Rick Macklem at The University of Guelph. 7191783Srmacklem * 8191783Srmacklem * Redistribution and use in source and binary forms, with or without 9191783Srmacklem * modification, are permitted provided that the following conditions 10191783Srmacklem * are met: 11191783Srmacklem * 1. Redistributions of source code must retain the above copyright 12191783Srmacklem * notice, this list of conditions and the following disclaimer. 13191783Srmacklem * 2. Redistributions in binary form must reproduce the above copyright 14191783Srmacklem * notice, this list of conditions and the following disclaimer in the 15191783Srmacklem * documentation and/or other materials provided with the distribution. 16191783Srmacklem * 4. Neither the name of the University nor the names of its contributors 17191783Srmacklem * may be used to endorse or promote products derived from this software 18191783Srmacklem * without specific prior written permission. 19191783Srmacklem * 20191783Srmacklem * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21191783Srmacklem * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22191783Srmacklem * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23191783Srmacklem * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24191783Srmacklem * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25191783Srmacklem * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26191783Srmacklem * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27191783Srmacklem * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28191783Srmacklem * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29191783Srmacklem * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30191783Srmacklem * SUCH DAMAGE. 31191783Srmacklem * 32191783Srmacklem */ 33191783Srmacklem 34191783Srmacklem#include <sys/cdefs.h> 35191783Srmacklem__FBSDID("$FreeBSD: releng/11.0/sys/fs/nfsserver/nfs_nfsdkrpc.c 299203 2016-05-06 23:40:37Z pfg $"); 36191783Srmacklem 37191783Srmacklem#include "opt_inet6.h" 38191783Srmacklem#include "opt_kgssapi.h" 39191783Srmacklem 40191783Srmacklem#include <fs/nfs/nfsport.h> 41191783Srmacklem 42191783Srmacklem#include <rpc/rpc.h> 43191783Srmacklem#include <rpc/rpcsec_gss.h> 44191783Srmacklem 45249596Sken#include <nfs/nfs_fha.h> 46249592Sken#include <fs/nfsserver/nfs_fha_new.h> 47249592Sken 48193511Srwatson#include <security/mac/mac_framework.h> 49193511Srwatson 50191783SrmacklemNFSDLOCKMUTEX; 51241561SrmacklemNFSV4ROOTLOCKMUTEX; 52241561Srmacklemstruct nfsv4lock nfsd_suspend_lock; 53191783Srmacklem 54191783Srmacklem/* 55191783Srmacklem * Mapping of old NFS Version 2 RPC numbers to generic numbers. 56191783Srmacklem */ 57249592Skenint newnfs_nfsv3_procid[NFS_V3NPROCS] = { 58191783Srmacklem NFSPROC_NULL, 59191783Srmacklem NFSPROC_GETATTR, 60191783Srmacklem NFSPROC_SETATTR, 61191783Srmacklem NFSPROC_NOOP, 62191783Srmacklem NFSPROC_LOOKUP, 63191783Srmacklem NFSPROC_READLINK, 64191783Srmacklem NFSPROC_READ, 65191783Srmacklem NFSPROC_NOOP, 66191783Srmacklem NFSPROC_WRITE, 67191783Srmacklem NFSPROC_CREATE, 68191783Srmacklem NFSPROC_REMOVE, 69191783Srmacklem NFSPROC_RENAME, 70191783Srmacklem NFSPROC_LINK, 71191783Srmacklem NFSPROC_SYMLINK, 72191783Srmacklem NFSPROC_MKDIR, 73191783Srmacklem NFSPROC_RMDIR, 74191783Srmacklem NFSPROC_READDIR, 75191783Srmacklem NFSPROC_FSSTAT, 76191783Srmacklem NFSPROC_NOOP, 77191783Srmacklem NFSPROC_NOOP, 78191783Srmacklem NFSPROC_NOOP, 79191783Srmacklem NFSPROC_NOOP, 80191783Srmacklem}; 81191783Srmacklem 82191783Srmacklem 83221615SrmacklemSYSCTL_DECL(_vfs_nfsd); 84191783Srmacklem 85191783SrmacklemSVCPOOL *nfsrvd_pool; 86191783Srmacklem 87191783Srmacklemstatic int nfs_privport = 0; 88273727SkibSYSCTL_INT(_vfs_nfsd, OID_AUTO, nfs_privport, CTLFLAG_RWTUN, 89191783Srmacklem &nfs_privport, 0, 90191783Srmacklem "Only allow clients using a privileged port for NFSv2 and 3"); 91191783Srmacklem 92192782Srmacklemstatic int nfs_minvers = NFS_VER2; 93273727SkibSYSCTL_INT(_vfs_nfsd, OID_AUTO, server_min_nfsvers, CTLFLAG_RWTUN, 94192782Srmacklem &nfs_minvers, 0, "The lowest version of NFS handled by the server"); 95192782Srmacklem 96192782Srmacklemstatic int nfs_maxvers = NFS_VER4; 97273727SkibSYSCTL_INT(_vfs_nfsd, OID_AUTO, server_max_nfsvers, CTLFLAG_RWTUN, 98192782Srmacklem &nfs_maxvers, 0, "The highest version of NFS handled by the server"); 99192782Srmacklem 100260229Smavstatic int nfs_proc(struct nfsrv_descript *, u_int32_t, SVCXPRT *xprt, 101260229Smav struct nfsrvcache **); 102191783Srmacklem 103191783Srmacklemextern u_long sb_max_adj; 104191783Srmacklemextern int newnfs_numnfsd; 105217432Srmacklemextern struct proc *nfsd_master_proc; 106191783Srmacklem 107191783Srmacklem/* 108191783Srmacklem * NFS server system calls 109191783Srmacklem */ 110191783Srmacklem 111191783Srmacklemstatic void 112191783Srmacklemnfssvc_program(struct svc_req *rqst, SVCXPRT *xprt) 113191783Srmacklem{ 114191783Srmacklem struct nfsrv_descript nd; 115191783Srmacklem struct nfsrvcache *rp = NULL; 116192121Srmacklem int cacherep, credflavor; 117191783Srmacklem 118191783Srmacklem memset(&nd, 0, sizeof(nd)); 119191783Srmacklem if (rqst->rq_vers == NFS_VER2) { 120281962Srmacklem if (rqst->rq_proc > NFSV2PROC_STATFS || 121281962Srmacklem newnfs_nfsv3_procid[rqst->rq_proc] == NFSPROC_NOOP) { 122191783Srmacklem svcerr_noproc(rqst); 123191783Srmacklem svc_freereq(rqst); 124224086Szack goto out; 125191783Srmacklem } 126191783Srmacklem nd.nd_procnum = newnfs_nfsv3_procid[rqst->rq_proc]; 127191783Srmacklem nd.nd_flag = ND_NFSV2; 128191783Srmacklem } else if (rqst->rq_vers == NFS_VER3) { 129191783Srmacklem if (rqst->rq_proc >= NFS_V3NPROCS) { 130191783Srmacklem svcerr_noproc(rqst); 131191783Srmacklem svc_freereq(rqst); 132224086Szack goto out; 133191783Srmacklem } 134191783Srmacklem nd.nd_procnum = rqst->rq_proc; 135191783Srmacklem nd.nd_flag = ND_NFSV3; 136191783Srmacklem } else { 137191783Srmacklem if (rqst->rq_proc != NFSPROC_NULL && 138191783Srmacklem rqst->rq_proc != NFSV4PROC_COMPOUND) { 139191783Srmacklem svcerr_noproc(rqst); 140191783Srmacklem svc_freereq(rqst); 141224086Szack goto out; 142191783Srmacklem } 143191783Srmacklem nd.nd_procnum = rqst->rq_proc; 144191783Srmacklem nd.nd_flag = ND_NFSV4; 145191783Srmacklem } 146191783Srmacklem 147191783Srmacklem /* 148191783Srmacklem * Note: we want rq_addr, not svc_getrpccaller for nd_nam2 - 149191783Srmacklem * NFS_SRVMAXDATA uses a NULL value for nd_nam2 to detect TCP 150191783Srmacklem * mounts. 151191783Srmacklem */ 152191783Srmacklem nd.nd_mrep = rqst->rq_args; 153191783Srmacklem rqst->rq_args = NULL; 154249592Sken newnfs_realign(&nd.nd_mrep, M_WAITOK); 155191783Srmacklem nd.nd_md = nd.nd_mrep; 156191783Srmacklem nd.nd_dpos = mtod(nd.nd_md, caddr_t); 157191783Srmacklem nd.nd_nam = svc_getrpccaller(rqst); 158191783Srmacklem nd.nd_nam2 = rqst->rq_addr; 159191783Srmacklem nd.nd_mreq = NULL; 160191783Srmacklem nd.nd_cred = NULL; 161191783Srmacklem 162191783Srmacklem if (nfs_privport && (nd.nd_flag & ND_NFSV4) == 0) { 163191783Srmacklem /* Check if source port is privileged */ 164191783Srmacklem u_short port; 165191783Srmacklem struct sockaddr *nam = nd.nd_nam; 166191783Srmacklem struct sockaddr_in *sin; 167191783Srmacklem 168191783Srmacklem sin = (struct sockaddr_in *)nam; 169191783Srmacklem /* 170191783Srmacklem * INET/INET6 - same code: 171191783Srmacklem * sin_port and sin6_port are at same offset 172191783Srmacklem */ 173191783Srmacklem port = ntohs(sin->sin_port); 174191783Srmacklem if (port >= IPPORT_RESERVED && 175191783Srmacklem nd.nd_procnum != NFSPROC_NULL) { 176191783Srmacklem#ifdef INET6 177191783Srmacklem char b6[INET6_ADDRSTRLEN]; 178191783Srmacklem#if defined(KLD_MODULE) 179191783Srmacklem /* Do not use ip6_sprintf: the nfs module should work without INET6. */ 180191783Srmacklem#define ip6_sprintf(buf, a) \ 181191783Srmacklem (sprintf((buf), "%x:%x:%x:%x:%x:%x:%x:%x", \ 182191783Srmacklem (a)->s6_addr16[0], (a)->s6_addr16[1], \ 183191783Srmacklem (a)->s6_addr16[2], (a)->s6_addr16[3], \ 184191783Srmacklem (a)->s6_addr16[4], (a)->s6_addr16[5], \ 185191783Srmacklem (a)->s6_addr16[6], (a)->s6_addr16[7]), \ 186191783Srmacklem (buf)) 187191783Srmacklem#endif 188191783Srmacklem#endif 189191783Srmacklem printf("NFS request from unprivileged port (%s:%d)\n", 190191783Srmacklem#ifdef INET6 191191783Srmacklem sin->sin_family == AF_INET6 ? 192191783Srmacklem ip6_sprintf(b6, &satosin6(sin)->sin6_addr) : 193191783Srmacklem#if defined(KLD_MODULE) 194191783Srmacklem#undef ip6_sprintf 195191783Srmacklem#endif 196191783Srmacklem#endif 197191783Srmacklem inet_ntoa(sin->sin_addr), port); 198191783Srmacklem svcerr_weakauth(rqst); 199191783Srmacklem svc_freereq(rqst); 200191783Srmacklem m_freem(nd.nd_mrep); 201224086Szack goto out; 202191783Srmacklem } 203191783Srmacklem } 204191783Srmacklem 205191783Srmacklem if (nd.nd_procnum != NFSPROC_NULL) { 206192121Srmacklem if (!svc_getcred(rqst, &nd.nd_cred, &credflavor)) { 207191783Srmacklem svcerr_weakauth(rqst); 208191783Srmacklem svc_freereq(rqst); 209191783Srmacklem m_freem(nd.nd_mrep); 210224086Szack goto out; 211191783Srmacklem } 212192121Srmacklem 213192121Srmacklem /* Set the flag based on credflavor */ 214192121Srmacklem if (credflavor == RPCSEC_GSS_KRB5) { 215192121Srmacklem nd.nd_flag |= ND_GSS; 216192121Srmacklem } else if (credflavor == RPCSEC_GSS_KRB5I) { 217192121Srmacklem nd.nd_flag |= (ND_GSS | ND_GSSINTEGRITY); 218192121Srmacklem } else if (credflavor == RPCSEC_GSS_KRB5P) { 219192121Srmacklem nd.nd_flag |= (ND_GSS | ND_GSSPRIVACY); 220192121Srmacklem } else if (credflavor != AUTH_SYS) { 221192121Srmacklem svcerr_weakauth(rqst); 222192121Srmacklem svc_freereq(rqst); 223192121Srmacklem m_freem(nd.nd_mrep); 224224086Szack goto out; 225192121Srmacklem } 226192121Srmacklem 227191783Srmacklem#ifdef MAC 228191783Srmacklem mac_cred_associate_nfsd(nd.nd_cred); 229191783Srmacklem#endif 230241561Srmacklem /* 231241561Srmacklem * Get a refcnt (shared lock) on nfsd_suspend_lock. 232241561Srmacklem * NFSSVC_SUSPENDNFSD will take an exclusive lock on 233241561Srmacklem * nfsd_suspend_lock to suspend these threads. 234299203Spfg * The call to nfsv4_lock() that precedes nfsv4_getref() 235299201Srmacklem * ensures that the acquisition of the exclusive lock 236299201Srmacklem * takes priority over acquisition of the shared lock by 237299201Srmacklem * waiting for any exclusive lock request to complete. 238241561Srmacklem * This must be done here, before the check of 239241561Srmacklem * nfsv4root exports by nfsvno_v4rootexport(). 240241561Srmacklem */ 241241561Srmacklem NFSLOCKV4ROOTMUTEX(); 242299201Srmacklem nfsv4_lock(&nfsd_suspend_lock, 0, NULL, NFSV4ROOTLOCKMUTEXPTR, 243299201Srmacklem NULL); 244241561Srmacklem nfsv4_getref(&nfsd_suspend_lock, NULL, NFSV4ROOTLOCKMUTEXPTR, 245241561Srmacklem NULL); 246241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 247241561Srmacklem 248192780Srmacklem if ((nd.nd_flag & ND_NFSV4) != 0) { 249191783Srmacklem nd.nd_repstat = nfsvno_v4rootexport(&nd); 250192780Srmacklem if (nd.nd_repstat != 0) { 251241561Srmacklem NFSLOCKV4ROOTMUTEX(); 252241561Srmacklem nfsv4_relref(&nfsd_suspend_lock); 253241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 254192780Srmacklem svcerr_weakauth(rqst); 255192780Srmacklem svc_freereq(rqst); 256192780Srmacklem m_freem(nd.nd_mrep); 257224086Szack goto out; 258192780Srmacklem } 259192780Srmacklem } 260191783Srmacklem 261260229Smav cacherep = nfs_proc(&nd, rqst->rq_xid, xprt, &rp); 262241561Srmacklem NFSLOCKV4ROOTMUTEX(); 263241561Srmacklem nfsv4_relref(&nfsd_suspend_lock); 264241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 265191783Srmacklem } else { 266191783Srmacklem NFSMGET(nd.nd_mreq); 267191783Srmacklem nd.nd_mreq->m_len = 0; 268191783Srmacklem cacherep = RC_REPLY; 269191783Srmacklem } 270191783Srmacklem if (nd.nd_mrep != NULL) 271191783Srmacklem m_freem(nd.nd_mrep); 272191783Srmacklem 273191783Srmacklem if (nd.nd_cred != NULL) 274191783Srmacklem crfree(nd.nd_cred); 275191783Srmacklem 276191783Srmacklem if (cacherep == RC_DROPIT) { 277191783Srmacklem if (nd.nd_mreq != NULL) 278191783Srmacklem m_freem(nd.nd_mreq); 279191783Srmacklem svc_freereq(rqst); 280224086Szack goto out; 281191783Srmacklem } 282191783Srmacklem 283191783Srmacklem if (nd.nd_mreq == NULL) { 284191783Srmacklem svcerr_decode(rqst); 285191783Srmacklem svc_freereq(rqst); 286224086Szack goto out; 287191783Srmacklem } 288191783Srmacklem 289191783Srmacklem if (nd.nd_repstat & NFSERR_AUTHERR) { 290191783Srmacklem svcerr_auth(rqst, nd.nd_repstat & ~NFSERR_AUTHERR); 291191783Srmacklem if (nd.nd_mreq != NULL) 292191783Srmacklem m_freem(nd.nd_mreq); 293191783Srmacklem } else if (!svc_sendreply_mbuf(rqst, nd.nd_mreq)) { 294191783Srmacklem svcerr_systemerr(rqst); 295191783Srmacklem } 296260229Smav if (rp != NULL) { 297260648Smav nfsrvd_sentcache(rp, (rqst->rq_reply_seq != 0 || 298260648Smav SVC_ACK(xprt, NULL)), rqst->rq_reply_seq); 299260229Smav } 300191783Srmacklem svc_freereq(rqst); 301224086Szack 302224086Szackout: 303283600Skib if (softdep_ast_cleanup != NULL) 304283600Skib softdep_ast_cleanup(); 305224086Szack NFSEXITCODE(0); 306191783Srmacklem} 307191783Srmacklem 308191783Srmacklem/* 309191783Srmacklem * Check the cache and, optionally, do the RPC. 310191783Srmacklem * Return the appropriate cache response. 311191783Srmacklem */ 312191783Srmacklemstatic int 313260229Smavnfs_proc(struct nfsrv_descript *nd, u_int32_t xid, SVCXPRT *xprt, 314260229Smav struct nfsrvcache **rpp) 315191783Srmacklem{ 316191783Srmacklem struct thread *td = curthread; 317268115Srmacklem int cacherep = RC_DOIT, isdgram, taglen = -1; 318268115Srmacklem struct mbuf *m; 319268115Srmacklem u_char tag[NFSV4_SMALLSTR + 1], *tagstr = NULL; 320268115Srmacklem u_int32_t minorvers = 0; 321260229Smav uint32_t ack; 322191783Srmacklem 323191783Srmacklem *rpp = NULL; 324191783Srmacklem if (nd->nd_nam2 == NULL) { 325191783Srmacklem nd->nd_flag |= ND_STREAMSOCK; 326191783Srmacklem isdgram = 0; 327191783Srmacklem } else { 328191783Srmacklem isdgram = 1; 329191783Srmacklem } 330191783Srmacklem 331191783Srmacklem /* 332192780Srmacklem * Two cases: 333191783Srmacklem * 1 - For NFSv2 over UDP, if we are near our malloc/mget 334191783Srmacklem * limit, just drop the request. There is no 335191783Srmacklem * NFSERR_RESOURCE or NFSERR_DELAY for NFSv2 and the 336191783Srmacklem * client will timeout/retry over UDP in a little while. 337192780Srmacklem * 2 - nd_repstat == 0 && nd_mreq == NULL, which 338191783Srmacklem * means a normal nfs rpc, so check the cache 339191783Srmacklem */ 340191783Srmacklem if ((nd->nd_flag & ND_NFSV2) && nd->nd_nam2 != NULL && 341191783Srmacklem nfsrv_mallocmget_limit()) { 342191783Srmacklem cacherep = RC_DROPIT; 343191783Srmacklem } else { 344191783Srmacklem /* 345191783Srmacklem * For NFSv3, play it safe and assume that the client is 346191783Srmacklem * doing retries on the same TCP connection. 347191783Srmacklem */ 348191783Srmacklem if ((nd->nd_flag & (ND_NFSV4 | ND_STREAMSOCK)) == 349191783Srmacklem ND_STREAMSOCK) 350191783Srmacklem nd->nd_flag |= ND_SAMETCPCONN; 351191783Srmacklem nd->nd_retxid = xid; 352191783Srmacklem nd->nd_tcpconntime = NFSD_MONOSEC; 353260229Smav nd->nd_sockref = xprt->xp_sockref; 354268115Srmacklem if ((nd->nd_flag & ND_NFSV4) != 0) 355268115Srmacklem nfsd_getminorvers(nd, tag, &tagstr, &taglen, 356268115Srmacklem &minorvers); 357268115Srmacklem if ((nd->nd_flag & ND_NFSV41) != 0) 358268115Srmacklem /* NFSv4.1 caches replies in the session slots. */ 359268115Srmacklem cacherep = RC_DOIT; 360268115Srmacklem else { 361268115Srmacklem cacherep = nfsrvd_getcache(nd); 362268115Srmacklem ack = 0; 363268115Srmacklem SVC_ACK(xprt, &ack); 364268115Srmacklem nfsrc_trimcache(xprt->xp_sockref, ack, 0); 365268115Srmacklem } 366191783Srmacklem } 367191783Srmacklem 368191783Srmacklem /* 369191783Srmacklem * Handle the request. There are three cases. 370191783Srmacklem * RC_DOIT - do the RPC 371191783Srmacklem * RC_REPLY - return the reply already created 372191783Srmacklem * RC_DROPIT - just throw the request away 373191783Srmacklem */ 374191783Srmacklem if (cacherep == RC_DOIT) { 375268115Srmacklem if ((nd->nd_flag & ND_NFSV41) != 0) 376268115Srmacklem nd->nd_xprt = xprt; 377268115Srmacklem nfsrvd_dorpc(nd, isdgram, tagstr, taglen, minorvers, td); 378268115Srmacklem if ((nd->nd_flag & ND_NFSV41) != 0) { 379268115Srmacklem if (nd->nd_repstat != NFSERR_REPLYFROMCACHE && 380268115Srmacklem (nd->nd_flag & ND_SAVEREPLY) != 0) { 381268115Srmacklem /* Cache a copy of the reply. */ 382268115Srmacklem m = m_copym(nd->nd_mreq, 0, M_COPYALL, 383268115Srmacklem M_WAITOK); 384268115Srmacklem } else 385268115Srmacklem m = NULL; 386268115Srmacklem if ((nd->nd_flag & ND_HASSEQUENCE) != 0) 387268115Srmacklem nfsrv_cache_session(nd->nd_sessionid, 388268115Srmacklem nd->nd_slotid, nd->nd_repstat, &m); 389268115Srmacklem if (nd->nd_repstat == NFSERR_REPLYFROMCACHE) 390268115Srmacklem nd->nd_repstat = 0; 391191783Srmacklem cacherep = RC_REPLY; 392268115Srmacklem } else { 393268115Srmacklem if (nd->nd_repstat == NFSERR_DONTREPLY) 394268115Srmacklem cacherep = RC_DROPIT; 395268115Srmacklem else 396268115Srmacklem cacherep = RC_REPLY; 397268115Srmacklem *rpp = nfsrvd_updatecache(nd); 398268115Srmacklem } 399191783Srmacklem } 400268115Srmacklem if (tagstr != NULL && taglen > NFSV4_SMALLSTR) 401268115Srmacklem free(tagstr, M_TEMP); 402224086Szack 403224086Szack NFSEXITCODE2(0, nd); 404191783Srmacklem return (cacherep); 405191783Srmacklem} 406191783Srmacklem 407260229Smavstatic void 408260229Smavnfssvc_loss(SVCXPRT *xprt) 409260229Smav{ 410260229Smav uint32_t ack; 411260229Smav 412260229Smav ack = 0; 413260229Smav SVC_ACK(xprt, &ack); 414260229Smav nfsrc_trimcache(xprt->xp_sockref, ack, 1); 415260229Smav} 416260229Smav 417191783Srmacklem/* 418191783Srmacklem * Adds a socket to the list for servicing by nfsds. 419191783Srmacklem */ 420191783Srmacklemint 421191783Srmacklemnfsrvd_addsock(struct file *fp) 422191783Srmacklem{ 423191783Srmacklem int siz; 424191783Srmacklem struct socket *so; 425224086Szack int error = 0; 426191783Srmacklem SVCXPRT *xprt; 427191783Srmacklem static u_int64_t sockref = 0; 428191783Srmacklem 429191783Srmacklem so = fp->f_data; 430191783Srmacklem 431191783Srmacklem siz = sb_max_adj; 432191783Srmacklem error = soreserve(so, siz, siz); 433224086Szack if (error) 434224086Szack goto out; 435191783Srmacklem 436191783Srmacklem /* 437191783Srmacklem * Steal the socket from userland so that it doesn't close 438191783Srmacklem * unexpectedly. 439191783Srmacklem */ 440191783Srmacklem if (so->so_type == SOCK_DGRAM) 441191783Srmacklem xprt = svc_dg_create(nfsrvd_pool, so, 0, 0); 442191783Srmacklem else 443191783Srmacklem xprt = svc_vc_create(nfsrvd_pool, so, 0, 0); 444191783Srmacklem if (xprt) { 445191783Srmacklem fp->f_ops = &badfileops; 446191783Srmacklem fp->f_data = NULL; 447191783Srmacklem xprt->xp_sockref = ++sockref; 448192782Srmacklem if (nfs_minvers == NFS_VER2) 449192782Srmacklem svc_reg(xprt, NFS_PROG, NFS_VER2, nfssvc_program, 450192782Srmacklem NULL); 451192782Srmacklem if (nfs_minvers <= NFS_VER3 && nfs_maxvers >= NFS_VER3) 452192782Srmacklem svc_reg(xprt, NFS_PROG, NFS_VER3, nfssvc_program, 453192782Srmacklem NULL); 454192782Srmacklem if (nfs_maxvers >= NFS_VER4) 455192782Srmacklem svc_reg(xprt, NFS_PROG, NFS_VER4, nfssvc_program, 456192782Srmacklem NULL); 457260229Smav if (so->so_type == SOCK_STREAM) 458260229Smav svc_loss_reg(xprt, nfssvc_loss); 459194408Srmacklem SVC_RELEASE(xprt); 460191783Srmacklem } 461191783Srmacklem 462224086Szackout: 463224086Szack NFSEXITCODE(error); 464224086Szack return (error); 465191783Srmacklem} 466191783Srmacklem 467191783Srmacklem/* 468191783Srmacklem * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 469191783Srmacklem * until it is killed by a signal. 470191783Srmacklem */ 471191783Srmacklemint 472191783Srmacklemnfsrvd_nfsd(struct thread *td, struct nfsd_nfsd_args *args) 473191783Srmacklem{ 474192017Srmacklem char principal[MAXHOSTNAMELEN + 5]; 475283600Skib struct proc *p; 476224086Szack int error = 0; 477191783Srmacklem bool_t ret2, ret3, ret4; 478191783Srmacklem 479192017Srmacklem error = copyinstr(args->principal, principal, sizeof (principal), 480192017Srmacklem NULL); 481192017Srmacklem if (error) 482224086Szack goto out; 483191783Srmacklem 484191783Srmacklem /* 485191783Srmacklem * Only the first nfsd actually does any work. The RPC code 486191783Srmacklem * adds threads to it as needed. Any extra processes offered 487191783Srmacklem * by nfsd just exit. If nfsd is new enough, it will call us 488191783Srmacklem * once with a structure that specifies how many threads to 489191783Srmacklem * use. 490191783Srmacklem */ 491191783Srmacklem NFSD_LOCK(); 492191783Srmacklem if (newnfs_numnfsd == 0) { 493283600Skib p = td->td_proc; 494283600Skib PROC_LOCK(p); 495283600Skib p->p_flag2 |= P2_AST_SU; 496283600Skib PROC_UNLOCK(p); 497191783Srmacklem newnfs_numnfsd++; 498191783Srmacklem 499191783Srmacklem NFSD_UNLOCK(); 500191783Srmacklem 501192017Srmacklem /* An empty string implies AUTH_SYS only. */ 502192017Srmacklem if (principal[0] != '\0') { 503223309Srmacklem ret2 = rpc_gss_set_svc_name_call(principal, 504223309Srmacklem "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER2); 505223309Srmacklem ret3 = rpc_gss_set_svc_name_call(principal, 506223309Srmacklem "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER3); 507223309Srmacklem ret4 = rpc_gss_set_svc_name_call(principal, 508223309Srmacklem "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER4); 509191783Srmacklem 510223309Srmacklem if (!ret2 || !ret3 || !ret4) 511223309Srmacklem printf("nfsd: can't register svc name\n"); 512191783Srmacklem } 513191783Srmacklem 514192017Srmacklem nfsrvd_pool->sp_minthreads = args->minthreads; 515192017Srmacklem nfsrvd_pool->sp_maxthreads = args->maxthreads; 516191783Srmacklem 517191783Srmacklem svc_run(nfsrvd_pool); 518191783Srmacklem 519192017Srmacklem if (principal[0] != '\0') { 520223309Srmacklem rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER2); 521223309Srmacklem rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER3); 522223309Srmacklem rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER4); 523192017Srmacklem } 524191783Srmacklem 525191783Srmacklem NFSD_LOCK(); 526191783Srmacklem newnfs_numnfsd--; 527191783Srmacklem nfsrvd_init(1); 528283600Skib PROC_LOCK(p); 529283600Skib p->p_flag2 &= ~P2_AST_SU; 530283600Skib PROC_UNLOCK(p); 531191783Srmacklem } 532191783Srmacklem NFSD_UNLOCK(); 533191783Srmacklem 534224086Szackout: 535224086Szack NFSEXITCODE(error); 536224086Szack return (error); 537191783Srmacklem} 538191783Srmacklem 539191783Srmacklem/* 540191783Srmacklem * Initialize the data structures for the server. 541191783Srmacklem * Handshake with any new nfsds starting up to avoid any chance of 542191783Srmacklem * corruption. 543191783Srmacklem */ 544191783Srmacklemvoid 545191783Srmacklemnfsrvd_init(int terminating) 546191783Srmacklem{ 547191783Srmacklem 548191783Srmacklem NFSD_LOCK_ASSERT(); 549191783Srmacklem 550191783Srmacklem if (terminating) { 551217432Srmacklem nfsd_master_proc = NULL; 552191783Srmacklem NFSD_UNLOCK(); 553291150Srmacklem nfsrv_freeallbackchannel_xprts(); 554191783Srmacklem svcpool_destroy(nfsrvd_pool); 555191783Srmacklem nfsrvd_pool = NULL; 556191783Srmacklem NFSD_LOCK(); 557191783Srmacklem } 558191783Srmacklem 559191783Srmacklem NFSD_UNLOCK(); 560191783Srmacklem 561221615Srmacklem nfsrvd_pool = svcpool_create("nfsd", SYSCTL_STATIC_CHILDREN(_vfs_nfsd)); 562191783Srmacklem nfsrvd_pool->sp_rcache = NULL; 563249592Sken nfsrvd_pool->sp_assign = fhanew_assign; 564249592Sken nfsrvd_pool->sp_done = fha_nd_complete; 565191783Srmacklem 566191783Srmacklem NFSD_LOCK(); 567191783Srmacklem} 568191783Srmacklem 569