nfs_nfsdkrpc.c revision 283600
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: head/sys/fs/nfsserver/nfs_nfsdkrpc.c 283600 2015-05-27 09:20:42Z kib $"); 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. 234241561Srmacklem * This must be done here, before the check of 235241561Srmacklem * nfsv4root exports by nfsvno_v4rootexport(). 236241561Srmacklem */ 237241561Srmacklem NFSLOCKV4ROOTMUTEX(); 238241561Srmacklem nfsv4_getref(&nfsd_suspend_lock, NULL, NFSV4ROOTLOCKMUTEXPTR, 239241561Srmacklem NULL); 240241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 241241561Srmacklem 242192780Srmacklem if ((nd.nd_flag & ND_NFSV4) != 0) { 243191783Srmacklem nd.nd_repstat = nfsvno_v4rootexport(&nd); 244192780Srmacklem if (nd.nd_repstat != 0) { 245241561Srmacklem NFSLOCKV4ROOTMUTEX(); 246241561Srmacklem nfsv4_relref(&nfsd_suspend_lock); 247241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 248192780Srmacklem svcerr_weakauth(rqst); 249192780Srmacklem svc_freereq(rqst); 250192780Srmacklem m_freem(nd.nd_mrep); 251224086Szack goto out; 252192780Srmacklem } 253192780Srmacklem } 254191783Srmacklem 255260229Smav cacherep = nfs_proc(&nd, rqst->rq_xid, xprt, &rp); 256241561Srmacklem NFSLOCKV4ROOTMUTEX(); 257241561Srmacklem nfsv4_relref(&nfsd_suspend_lock); 258241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 259191783Srmacklem } else { 260191783Srmacklem NFSMGET(nd.nd_mreq); 261191783Srmacklem nd.nd_mreq->m_len = 0; 262191783Srmacklem cacherep = RC_REPLY; 263191783Srmacklem } 264191783Srmacklem if (nd.nd_mrep != NULL) 265191783Srmacklem m_freem(nd.nd_mrep); 266191783Srmacklem 267191783Srmacklem if (nd.nd_cred != NULL) 268191783Srmacklem crfree(nd.nd_cred); 269191783Srmacklem 270191783Srmacklem if (cacherep == RC_DROPIT) { 271191783Srmacklem if (nd.nd_mreq != NULL) 272191783Srmacklem m_freem(nd.nd_mreq); 273191783Srmacklem svc_freereq(rqst); 274224086Szack goto out; 275191783Srmacklem } 276191783Srmacklem 277191783Srmacklem if (nd.nd_mreq == NULL) { 278191783Srmacklem svcerr_decode(rqst); 279191783Srmacklem svc_freereq(rqst); 280224086Szack goto out; 281191783Srmacklem } 282191783Srmacklem 283191783Srmacklem if (nd.nd_repstat & NFSERR_AUTHERR) { 284191783Srmacklem svcerr_auth(rqst, nd.nd_repstat & ~NFSERR_AUTHERR); 285191783Srmacklem if (nd.nd_mreq != NULL) 286191783Srmacklem m_freem(nd.nd_mreq); 287191783Srmacklem } else if (!svc_sendreply_mbuf(rqst, nd.nd_mreq)) { 288191783Srmacklem svcerr_systemerr(rqst); 289191783Srmacklem } 290260229Smav if (rp != NULL) { 291260648Smav nfsrvd_sentcache(rp, (rqst->rq_reply_seq != 0 || 292260648Smav SVC_ACK(xprt, NULL)), rqst->rq_reply_seq); 293260229Smav } 294191783Srmacklem svc_freereq(rqst); 295224086Szack 296224086Szackout: 297283600Skib if (softdep_ast_cleanup != NULL) 298283600Skib softdep_ast_cleanup(); 299224086Szack NFSEXITCODE(0); 300191783Srmacklem} 301191783Srmacklem 302191783Srmacklem/* 303191783Srmacklem * Check the cache and, optionally, do the RPC. 304191783Srmacklem * Return the appropriate cache response. 305191783Srmacklem */ 306191783Srmacklemstatic int 307260229Smavnfs_proc(struct nfsrv_descript *nd, u_int32_t xid, SVCXPRT *xprt, 308260229Smav struct nfsrvcache **rpp) 309191783Srmacklem{ 310191783Srmacklem struct thread *td = curthread; 311268115Srmacklem int cacherep = RC_DOIT, isdgram, taglen = -1; 312268115Srmacklem struct mbuf *m; 313268115Srmacklem u_char tag[NFSV4_SMALLSTR + 1], *tagstr = NULL; 314268115Srmacklem u_int32_t minorvers = 0; 315260229Smav uint32_t ack; 316191783Srmacklem 317191783Srmacklem *rpp = NULL; 318191783Srmacklem if (nd->nd_nam2 == NULL) { 319191783Srmacklem nd->nd_flag |= ND_STREAMSOCK; 320191783Srmacklem isdgram = 0; 321191783Srmacklem } else { 322191783Srmacklem isdgram = 1; 323191783Srmacklem } 324191783Srmacklem 325191783Srmacklem /* 326192780Srmacklem * Two cases: 327191783Srmacklem * 1 - For NFSv2 over UDP, if we are near our malloc/mget 328191783Srmacklem * limit, just drop the request. There is no 329191783Srmacklem * NFSERR_RESOURCE or NFSERR_DELAY for NFSv2 and the 330191783Srmacklem * client will timeout/retry over UDP in a little while. 331192780Srmacklem * 2 - nd_repstat == 0 && nd_mreq == NULL, which 332191783Srmacklem * means a normal nfs rpc, so check the cache 333191783Srmacklem */ 334191783Srmacklem if ((nd->nd_flag & ND_NFSV2) && nd->nd_nam2 != NULL && 335191783Srmacklem nfsrv_mallocmget_limit()) { 336191783Srmacklem cacherep = RC_DROPIT; 337191783Srmacklem } else { 338191783Srmacklem /* 339191783Srmacklem * For NFSv3, play it safe and assume that the client is 340191783Srmacklem * doing retries on the same TCP connection. 341191783Srmacklem */ 342191783Srmacklem if ((nd->nd_flag & (ND_NFSV4 | ND_STREAMSOCK)) == 343191783Srmacklem ND_STREAMSOCK) 344191783Srmacklem nd->nd_flag |= ND_SAMETCPCONN; 345191783Srmacklem nd->nd_retxid = xid; 346191783Srmacklem nd->nd_tcpconntime = NFSD_MONOSEC; 347260229Smav nd->nd_sockref = xprt->xp_sockref; 348268115Srmacklem if ((nd->nd_flag & ND_NFSV4) != 0) 349268115Srmacklem nfsd_getminorvers(nd, tag, &tagstr, &taglen, 350268115Srmacklem &minorvers); 351268115Srmacklem if ((nd->nd_flag & ND_NFSV41) != 0) 352268115Srmacklem /* NFSv4.1 caches replies in the session slots. */ 353268115Srmacklem cacherep = RC_DOIT; 354268115Srmacklem else { 355268115Srmacklem cacherep = nfsrvd_getcache(nd); 356268115Srmacklem ack = 0; 357268115Srmacklem SVC_ACK(xprt, &ack); 358268115Srmacklem nfsrc_trimcache(xprt->xp_sockref, ack, 0); 359268115Srmacklem } 360191783Srmacklem } 361191783Srmacklem 362191783Srmacklem /* 363191783Srmacklem * Handle the request. There are three cases. 364191783Srmacklem * RC_DOIT - do the RPC 365191783Srmacklem * RC_REPLY - return the reply already created 366191783Srmacklem * RC_DROPIT - just throw the request away 367191783Srmacklem */ 368191783Srmacklem if (cacherep == RC_DOIT) { 369268115Srmacklem if ((nd->nd_flag & ND_NFSV41) != 0) 370268115Srmacklem nd->nd_xprt = xprt; 371268115Srmacklem nfsrvd_dorpc(nd, isdgram, tagstr, taglen, minorvers, td); 372268115Srmacklem if ((nd->nd_flag & ND_NFSV41) != 0) { 373268115Srmacklem if (nd->nd_repstat != NFSERR_REPLYFROMCACHE && 374268115Srmacklem (nd->nd_flag & ND_SAVEREPLY) != 0) { 375268115Srmacklem /* Cache a copy of the reply. */ 376268115Srmacklem m = m_copym(nd->nd_mreq, 0, M_COPYALL, 377268115Srmacklem M_WAITOK); 378268115Srmacklem } else 379268115Srmacklem m = NULL; 380268115Srmacklem if ((nd->nd_flag & ND_HASSEQUENCE) != 0) 381268115Srmacklem nfsrv_cache_session(nd->nd_sessionid, 382268115Srmacklem nd->nd_slotid, nd->nd_repstat, &m); 383268115Srmacklem if (nd->nd_repstat == NFSERR_REPLYFROMCACHE) 384268115Srmacklem nd->nd_repstat = 0; 385191783Srmacklem cacherep = RC_REPLY; 386268115Srmacklem } else { 387268115Srmacklem if (nd->nd_repstat == NFSERR_DONTREPLY) 388268115Srmacklem cacherep = RC_DROPIT; 389268115Srmacklem else 390268115Srmacklem cacherep = RC_REPLY; 391268115Srmacklem *rpp = nfsrvd_updatecache(nd); 392268115Srmacklem } 393191783Srmacklem } 394268115Srmacklem if (tagstr != NULL && taglen > NFSV4_SMALLSTR) 395268115Srmacklem free(tagstr, M_TEMP); 396224086Szack 397224086Szack NFSEXITCODE2(0, nd); 398191783Srmacklem return (cacherep); 399191783Srmacklem} 400191783Srmacklem 401260229Smavstatic void 402260229Smavnfssvc_loss(SVCXPRT *xprt) 403260229Smav{ 404260229Smav uint32_t ack; 405260229Smav 406260229Smav ack = 0; 407260229Smav SVC_ACK(xprt, &ack); 408260229Smav nfsrc_trimcache(xprt->xp_sockref, ack, 1); 409260229Smav} 410260229Smav 411191783Srmacklem/* 412191783Srmacklem * Adds a socket to the list for servicing by nfsds. 413191783Srmacklem */ 414191783Srmacklemint 415191783Srmacklemnfsrvd_addsock(struct file *fp) 416191783Srmacklem{ 417191783Srmacklem int siz; 418191783Srmacklem struct socket *so; 419224086Szack int error = 0; 420191783Srmacklem SVCXPRT *xprt; 421191783Srmacklem static u_int64_t sockref = 0; 422191783Srmacklem 423191783Srmacklem so = fp->f_data; 424191783Srmacklem 425191783Srmacklem siz = sb_max_adj; 426191783Srmacklem error = soreserve(so, siz, siz); 427224086Szack if (error) 428224086Szack goto out; 429191783Srmacklem 430191783Srmacklem /* 431191783Srmacklem * Steal the socket from userland so that it doesn't close 432191783Srmacklem * unexpectedly. 433191783Srmacklem */ 434191783Srmacklem if (so->so_type == SOCK_DGRAM) 435191783Srmacklem xprt = svc_dg_create(nfsrvd_pool, so, 0, 0); 436191783Srmacklem else 437191783Srmacklem xprt = svc_vc_create(nfsrvd_pool, so, 0, 0); 438191783Srmacklem if (xprt) { 439191783Srmacklem fp->f_ops = &badfileops; 440191783Srmacklem fp->f_data = NULL; 441191783Srmacklem xprt->xp_sockref = ++sockref; 442192782Srmacklem if (nfs_minvers == NFS_VER2) 443192782Srmacklem svc_reg(xprt, NFS_PROG, NFS_VER2, nfssvc_program, 444192782Srmacklem NULL); 445192782Srmacklem if (nfs_minvers <= NFS_VER3 && nfs_maxvers >= NFS_VER3) 446192782Srmacklem svc_reg(xprt, NFS_PROG, NFS_VER3, nfssvc_program, 447192782Srmacklem NULL); 448192782Srmacklem if (nfs_maxvers >= NFS_VER4) 449192782Srmacklem svc_reg(xprt, NFS_PROG, NFS_VER4, nfssvc_program, 450192782Srmacklem NULL); 451260229Smav if (so->so_type == SOCK_STREAM) 452260229Smav svc_loss_reg(xprt, nfssvc_loss); 453194408Srmacklem SVC_RELEASE(xprt); 454191783Srmacklem } 455191783Srmacklem 456224086Szackout: 457224086Szack NFSEXITCODE(error); 458224086Szack return (error); 459191783Srmacklem} 460191783Srmacklem 461191783Srmacklem/* 462191783Srmacklem * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 463191783Srmacklem * until it is killed by a signal. 464191783Srmacklem */ 465191783Srmacklemint 466191783Srmacklemnfsrvd_nfsd(struct thread *td, struct nfsd_nfsd_args *args) 467191783Srmacklem{ 468192017Srmacklem char principal[MAXHOSTNAMELEN + 5]; 469283600Skib struct proc *p; 470224086Szack int error = 0; 471191783Srmacklem bool_t ret2, ret3, ret4; 472191783Srmacklem 473192017Srmacklem error = copyinstr(args->principal, principal, sizeof (principal), 474192017Srmacklem NULL); 475192017Srmacklem if (error) 476224086Szack goto out; 477191783Srmacklem 478191783Srmacklem /* 479191783Srmacklem * Only the first nfsd actually does any work. The RPC code 480191783Srmacklem * adds threads to it as needed. Any extra processes offered 481191783Srmacklem * by nfsd just exit. If nfsd is new enough, it will call us 482191783Srmacklem * once with a structure that specifies how many threads to 483191783Srmacklem * use. 484191783Srmacklem */ 485191783Srmacklem NFSD_LOCK(); 486191783Srmacklem if (newnfs_numnfsd == 0) { 487283600Skib p = td->td_proc; 488283600Skib PROC_LOCK(p); 489283600Skib p->p_flag2 |= P2_AST_SU; 490283600Skib PROC_UNLOCK(p); 491191783Srmacklem newnfs_numnfsd++; 492191783Srmacklem 493191783Srmacklem NFSD_UNLOCK(); 494191783Srmacklem 495192017Srmacklem /* An empty string implies AUTH_SYS only. */ 496192017Srmacklem if (principal[0] != '\0') { 497223309Srmacklem ret2 = rpc_gss_set_svc_name_call(principal, 498223309Srmacklem "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER2); 499223309Srmacklem ret3 = rpc_gss_set_svc_name_call(principal, 500223309Srmacklem "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER3); 501223309Srmacklem ret4 = rpc_gss_set_svc_name_call(principal, 502223309Srmacklem "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER4); 503191783Srmacklem 504223309Srmacklem if (!ret2 || !ret3 || !ret4) 505223309Srmacklem printf("nfsd: can't register svc name\n"); 506191783Srmacklem } 507191783Srmacklem 508192017Srmacklem nfsrvd_pool->sp_minthreads = args->minthreads; 509192017Srmacklem nfsrvd_pool->sp_maxthreads = args->maxthreads; 510191783Srmacklem 511191783Srmacklem svc_run(nfsrvd_pool); 512191783Srmacklem 513192017Srmacklem if (principal[0] != '\0') { 514223309Srmacklem rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER2); 515223309Srmacklem rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER3); 516223309Srmacklem rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER4); 517192017Srmacklem } 518191783Srmacklem 519191783Srmacklem NFSD_LOCK(); 520191783Srmacklem newnfs_numnfsd--; 521191783Srmacklem nfsrvd_init(1); 522283600Skib PROC_LOCK(p); 523283600Skib p->p_flag2 &= ~P2_AST_SU; 524283600Skib PROC_UNLOCK(p); 525191783Srmacklem } 526191783Srmacklem NFSD_UNLOCK(); 527191783Srmacklem 528224086Szackout: 529224086Szack NFSEXITCODE(error); 530224086Szack return (error); 531191783Srmacklem} 532191783Srmacklem 533191783Srmacklem/* 534191783Srmacklem * Initialize the data structures for the server. 535191783Srmacklem * Handshake with any new nfsds starting up to avoid any chance of 536191783Srmacklem * corruption. 537191783Srmacklem */ 538191783Srmacklemvoid 539191783Srmacklemnfsrvd_init(int terminating) 540191783Srmacklem{ 541191783Srmacklem 542191783Srmacklem NFSD_LOCK_ASSERT(); 543191783Srmacklem 544191783Srmacklem if (terminating) { 545217432Srmacklem nfsd_master_proc = NULL; 546191783Srmacklem NFSD_UNLOCK(); 547191783Srmacklem svcpool_destroy(nfsrvd_pool); 548191783Srmacklem nfsrvd_pool = NULL; 549191783Srmacklem NFSD_LOCK(); 550191783Srmacklem } 551191783Srmacklem 552191783Srmacklem NFSD_UNLOCK(); 553191783Srmacklem 554221615Srmacklem nfsrvd_pool = svcpool_create("nfsd", SYSCTL_STATIC_CHILDREN(_vfs_nfsd)); 555191783Srmacklem nfsrvd_pool->sp_rcache = NULL; 556249592Sken nfsrvd_pool->sp_assign = fhanew_assign; 557249592Sken nfsrvd_pool->sp_done = fha_nd_complete; 558191783Srmacklem 559191783Srmacklem NFSD_LOCK(); 560191783Srmacklem} 561191783Srmacklem 562