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/10.3/sys/fs/nfsserver/nfs_nfsdkrpc.c 291869 2015-12-05 21:38:53Z rmacklem $"); 36191783Srmacklem 37273736Shselasky#include <sys/param.h> 38273736Shselasky#include <sys/systm.h> 39273736Shselasky 40191783Srmacklem#include "opt_inet6.h" 41191783Srmacklem#include "opt_kgssapi.h" 42191783Srmacklem 43191783Srmacklem#include <fs/nfs/nfsport.h> 44191783Srmacklem 45191783Srmacklem#include <rpc/rpc.h> 46191783Srmacklem#include <rpc/rpcsec_gss.h> 47191783Srmacklem 48249596Sken#include <nfs/nfs_fha.h> 49249592Sken#include <fs/nfsserver/nfs_fha_new.h> 50249592Sken 51193511Srwatson#include <security/mac/mac_framework.h> 52193511Srwatson 53191783SrmacklemNFSDLOCKMUTEX; 54241561SrmacklemNFSV4ROOTLOCKMUTEX; 55241561Srmacklemstruct nfsv4lock nfsd_suspend_lock; 56191783Srmacklem 57191783Srmacklem/* 58191783Srmacklem * Mapping of old NFS Version 2 RPC numbers to generic numbers. 59191783Srmacklem */ 60249592Skenint newnfs_nfsv3_procid[NFS_V3NPROCS] = { 61191783Srmacklem NFSPROC_NULL, 62191783Srmacklem NFSPROC_GETATTR, 63191783Srmacklem NFSPROC_SETATTR, 64191783Srmacklem NFSPROC_NOOP, 65191783Srmacklem NFSPROC_LOOKUP, 66191783Srmacklem NFSPROC_READLINK, 67191783Srmacklem NFSPROC_READ, 68191783Srmacklem NFSPROC_NOOP, 69191783Srmacklem NFSPROC_WRITE, 70191783Srmacklem NFSPROC_CREATE, 71191783Srmacklem NFSPROC_REMOVE, 72191783Srmacklem NFSPROC_RENAME, 73191783Srmacklem NFSPROC_LINK, 74191783Srmacklem NFSPROC_SYMLINK, 75191783Srmacklem NFSPROC_MKDIR, 76191783Srmacklem NFSPROC_RMDIR, 77191783Srmacklem NFSPROC_READDIR, 78191783Srmacklem NFSPROC_FSSTAT, 79191783Srmacklem NFSPROC_NOOP, 80191783Srmacklem NFSPROC_NOOP, 81191783Srmacklem NFSPROC_NOOP, 82191783Srmacklem NFSPROC_NOOP, 83191783Srmacklem}; 84191783Srmacklem 85191783Srmacklem 86221615SrmacklemSYSCTL_DECL(_vfs_nfsd); 87191783Srmacklem 88191783SrmacklemSVCPOOL *nfsrvd_pool; 89191783Srmacklem 90191783Srmacklemstatic int nfs_privport = 0; 91274027SkibSYSCTL_INT(_vfs_nfsd, OID_AUTO, nfs_privport, CTLFLAG_RWTUN, 92191783Srmacklem &nfs_privport, 0, 93191783Srmacklem "Only allow clients using a privileged port for NFSv2 and 3"); 94191783Srmacklem 95192782Srmacklemstatic int nfs_minvers = NFS_VER2; 96274027SkibSYSCTL_INT(_vfs_nfsd, OID_AUTO, server_min_nfsvers, CTLFLAG_RWTUN, 97192782Srmacklem &nfs_minvers, 0, "The lowest version of NFS handled by the server"); 98192782Srmacklem 99192782Srmacklemstatic int nfs_maxvers = NFS_VER4; 100274027SkibSYSCTL_INT(_vfs_nfsd, OID_AUTO, server_max_nfsvers, CTLFLAG_RWTUN, 101192782Srmacklem &nfs_maxvers, 0, "The highest version of NFS handled by the server"); 102192782Srmacklem 103261055Smavstatic int nfs_proc(struct nfsrv_descript *, u_int32_t, SVCXPRT *xprt, 104261055Smav struct nfsrvcache **); 105191783Srmacklem 106191783Srmacklemextern u_long sb_max_adj; 107191783Srmacklemextern int newnfs_numnfsd; 108217432Srmacklemextern struct proc *nfsd_master_proc; 109191783Srmacklem 110191783Srmacklem/* 111191783Srmacklem * NFS server system calls 112191783Srmacklem */ 113191783Srmacklem 114191783Srmacklemstatic void 115191783Srmacklemnfssvc_program(struct svc_req *rqst, SVCXPRT *xprt) 116191783Srmacklem{ 117191783Srmacklem struct nfsrv_descript nd; 118191783Srmacklem struct nfsrvcache *rp = NULL; 119192121Srmacklem int cacherep, credflavor; 120191783Srmacklem 121191783Srmacklem memset(&nd, 0, sizeof(nd)); 122191783Srmacklem if (rqst->rq_vers == NFS_VER2) { 123282340Srmacklem if (rqst->rq_proc > NFSV2PROC_STATFS || 124282340Srmacklem newnfs_nfsv3_procid[rqst->rq_proc] == NFSPROC_NOOP) { 125191783Srmacklem svcerr_noproc(rqst); 126191783Srmacklem svc_freereq(rqst); 127224086Szack goto out; 128191783Srmacklem } 129191783Srmacklem nd.nd_procnum = newnfs_nfsv3_procid[rqst->rq_proc]; 130191783Srmacklem nd.nd_flag = ND_NFSV2; 131191783Srmacklem } else if (rqst->rq_vers == NFS_VER3) { 132191783Srmacklem if (rqst->rq_proc >= NFS_V3NPROCS) { 133191783Srmacklem svcerr_noproc(rqst); 134191783Srmacklem svc_freereq(rqst); 135224086Szack goto out; 136191783Srmacklem } 137191783Srmacklem nd.nd_procnum = rqst->rq_proc; 138191783Srmacklem nd.nd_flag = ND_NFSV3; 139191783Srmacklem } else { 140191783Srmacklem if (rqst->rq_proc != NFSPROC_NULL && 141191783Srmacklem rqst->rq_proc != NFSV4PROC_COMPOUND) { 142191783Srmacklem svcerr_noproc(rqst); 143191783Srmacklem svc_freereq(rqst); 144224086Szack goto out; 145191783Srmacklem } 146191783Srmacklem nd.nd_procnum = rqst->rq_proc; 147191783Srmacklem nd.nd_flag = ND_NFSV4; 148191783Srmacklem } 149191783Srmacklem 150191783Srmacklem /* 151191783Srmacklem * Note: we want rq_addr, not svc_getrpccaller for nd_nam2 - 152191783Srmacklem * NFS_SRVMAXDATA uses a NULL value for nd_nam2 to detect TCP 153191783Srmacklem * mounts. 154191783Srmacklem */ 155191783Srmacklem nd.nd_mrep = rqst->rq_args; 156191783Srmacklem rqst->rq_args = NULL; 157249592Sken newnfs_realign(&nd.nd_mrep, M_WAITOK); 158191783Srmacklem nd.nd_md = nd.nd_mrep; 159191783Srmacklem nd.nd_dpos = mtod(nd.nd_md, caddr_t); 160191783Srmacklem nd.nd_nam = svc_getrpccaller(rqst); 161191783Srmacklem nd.nd_nam2 = rqst->rq_addr; 162191783Srmacklem nd.nd_mreq = NULL; 163191783Srmacklem nd.nd_cred = NULL; 164191783Srmacklem 165191783Srmacklem if (nfs_privport && (nd.nd_flag & ND_NFSV4) == 0) { 166191783Srmacklem /* Check if source port is privileged */ 167191783Srmacklem u_short port; 168191783Srmacklem struct sockaddr *nam = nd.nd_nam; 169191783Srmacklem struct sockaddr_in *sin; 170191783Srmacklem 171191783Srmacklem sin = (struct sockaddr_in *)nam; 172191783Srmacklem /* 173191783Srmacklem * INET/INET6 - same code: 174191783Srmacklem * sin_port and sin6_port are at same offset 175191783Srmacklem */ 176191783Srmacklem port = ntohs(sin->sin_port); 177191783Srmacklem if (port >= IPPORT_RESERVED && 178191783Srmacklem nd.nd_procnum != NFSPROC_NULL) { 179191783Srmacklem#ifdef INET6 180191783Srmacklem char b6[INET6_ADDRSTRLEN]; 181191783Srmacklem#if defined(KLD_MODULE) 182191783Srmacklem /* Do not use ip6_sprintf: the nfs module should work without INET6. */ 183191783Srmacklem#define ip6_sprintf(buf, a) \ 184191783Srmacklem (sprintf((buf), "%x:%x:%x:%x:%x:%x:%x:%x", \ 185191783Srmacklem (a)->s6_addr16[0], (a)->s6_addr16[1], \ 186191783Srmacklem (a)->s6_addr16[2], (a)->s6_addr16[3], \ 187191783Srmacklem (a)->s6_addr16[4], (a)->s6_addr16[5], \ 188191783Srmacklem (a)->s6_addr16[6], (a)->s6_addr16[7]), \ 189191783Srmacklem (buf)) 190191783Srmacklem#endif 191191783Srmacklem#endif 192191783Srmacklem printf("NFS request from unprivileged port (%s:%d)\n", 193191783Srmacklem#ifdef INET6 194191783Srmacklem sin->sin_family == AF_INET6 ? 195191783Srmacklem ip6_sprintf(b6, &satosin6(sin)->sin6_addr) : 196191783Srmacklem#if defined(KLD_MODULE) 197191783Srmacklem#undef ip6_sprintf 198191783Srmacklem#endif 199191783Srmacklem#endif 200191783Srmacklem inet_ntoa(sin->sin_addr), port); 201191783Srmacklem svcerr_weakauth(rqst); 202191783Srmacklem svc_freereq(rqst); 203191783Srmacklem m_freem(nd.nd_mrep); 204224086Szack goto out; 205191783Srmacklem } 206191783Srmacklem } 207191783Srmacklem 208191783Srmacklem if (nd.nd_procnum != NFSPROC_NULL) { 209192121Srmacklem if (!svc_getcred(rqst, &nd.nd_cred, &credflavor)) { 210191783Srmacklem svcerr_weakauth(rqst); 211191783Srmacklem svc_freereq(rqst); 212191783Srmacklem m_freem(nd.nd_mrep); 213224086Szack goto out; 214191783Srmacklem } 215192121Srmacklem 216192121Srmacklem /* Set the flag based on credflavor */ 217192121Srmacklem if (credflavor == RPCSEC_GSS_KRB5) { 218192121Srmacklem nd.nd_flag |= ND_GSS; 219192121Srmacklem } else if (credflavor == RPCSEC_GSS_KRB5I) { 220192121Srmacklem nd.nd_flag |= (ND_GSS | ND_GSSINTEGRITY); 221192121Srmacklem } else if (credflavor == RPCSEC_GSS_KRB5P) { 222192121Srmacklem nd.nd_flag |= (ND_GSS | ND_GSSPRIVACY); 223192121Srmacklem } else if (credflavor != AUTH_SYS) { 224192121Srmacklem svcerr_weakauth(rqst); 225192121Srmacklem svc_freereq(rqst); 226192121Srmacklem m_freem(nd.nd_mrep); 227224086Szack goto out; 228192121Srmacklem } 229192121Srmacklem 230191783Srmacklem#ifdef MAC 231191783Srmacklem mac_cred_associate_nfsd(nd.nd_cred); 232191783Srmacklem#endif 233241561Srmacklem /* 234241561Srmacklem * Get a refcnt (shared lock) on nfsd_suspend_lock. 235241561Srmacklem * NFSSVC_SUSPENDNFSD will take an exclusive lock on 236241561Srmacklem * nfsd_suspend_lock to suspend these threads. 237241561Srmacklem * This must be done here, before the check of 238241561Srmacklem * nfsv4root exports by nfsvno_v4rootexport(). 239241561Srmacklem */ 240241561Srmacklem NFSLOCKV4ROOTMUTEX(); 241241561Srmacklem nfsv4_getref(&nfsd_suspend_lock, NULL, NFSV4ROOTLOCKMUTEXPTR, 242241561Srmacklem NULL); 243241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 244241561Srmacklem 245192780Srmacklem if ((nd.nd_flag & ND_NFSV4) != 0) { 246191783Srmacklem nd.nd_repstat = nfsvno_v4rootexport(&nd); 247192780Srmacklem if (nd.nd_repstat != 0) { 248241561Srmacklem NFSLOCKV4ROOTMUTEX(); 249241561Srmacklem nfsv4_relref(&nfsd_suspend_lock); 250241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 251192780Srmacklem svcerr_weakauth(rqst); 252192780Srmacklem svc_freereq(rqst); 253192780Srmacklem m_freem(nd.nd_mrep); 254224086Szack goto out; 255192780Srmacklem } 256192780Srmacklem } 257191783Srmacklem 258261055Smav cacherep = nfs_proc(&nd, rqst->rq_xid, xprt, &rp); 259241561Srmacklem NFSLOCKV4ROOTMUTEX(); 260241561Srmacklem nfsv4_relref(&nfsd_suspend_lock); 261241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 262191783Srmacklem } else { 263191783Srmacklem NFSMGET(nd.nd_mreq); 264191783Srmacklem nd.nd_mreq->m_len = 0; 265191783Srmacklem cacherep = RC_REPLY; 266191783Srmacklem } 267191783Srmacklem if (nd.nd_mrep != NULL) 268191783Srmacklem m_freem(nd.nd_mrep); 269191783Srmacklem 270191783Srmacklem if (nd.nd_cred != NULL) 271191783Srmacklem crfree(nd.nd_cred); 272191783Srmacklem 273191783Srmacklem if (cacherep == RC_DROPIT) { 274191783Srmacklem if (nd.nd_mreq != NULL) 275191783Srmacklem m_freem(nd.nd_mreq); 276191783Srmacklem svc_freereq(rqst); 277224086Szack goto out; 278191783Srmacklem } 279191783Srmacklem 280191783Srmacklem if (nd.nd_mreq == NULL) { 281191783Srmacklem svcerr_decode(rqst); 282191783Srmacklem svc_freereq(rqst); 283224086Szack goto out; 284191783Srmacklem } 285191783Srmacklem 286191783Srmacklem if (nd.nd_repstat & NFSERR_AUTHERR) { 287191783Srmacklem svcerr_auth(rqst, nd.nd_repstat & ~NFSERR_AUTHERR); 288191783Srmacklem if (nd.nd_mreq != NULL) 289191783Srmacklem m_freem(nd.nd_mreq); 290191783Srmacklem } else if (!svc_sendreply_mbuf(rqst, nd.nd_mreq)) { 291191783Srmacklem svcerr_systemerr(rqst); 292191783Srmacklem } 293261055Smav if (rp != NULL) { 294261055Smav nfsrvd_sentcache(rp, (rqst->rq_reply_seq != 0 || 295261055Smav SVC_ACK(xprt, NULL)), rqst->rq_reply_seq); 296261055Smav } 297191783Srmacklem svc_freereq(rqst); 298224086Szack 299224086Szackout: 300284199Skib if (softdep_ast_cleanup != NULL) 301284199Skib softdep_ast_cleanup(); 302224086Szack NFSEXITCODE(0); 303191783Srmacklem} 304191783Srmacklem 305191783Srmacklem/* 306191783Srmacklem * Check the cache and, optionally, do the RPC. 307191783Srmacklem * Return the appropriate cache response. 308191783Srmacklem */ 309191783Srmacklemstatic int 310261055Smavnfs_proc(struct nfsrv_descript *nd, u_int32_t xid, SVCXPRT *xprt, 311261055Smav struct nfsrvcache **rpp) 312191783Srmacklem{ 313191783Srmacklem struct thread *td = curthread; 314269398Srmacklem int cacherep = RC_DOIT, isdgram, taglen = -1; 315269398Srmacklem struct mbuf *m; 316269398Srmacklem u_char tag[NFSV4_SMALLSTR + 1], *tagstr = NULL; 317269398Srmacklem u_int32_t minorvers = 0; 318261055Smav uint32_t ack; 319191783Srmacklem 320191783Srmacklem *rpp = NULL; 321191783Srmacklem if (nd->nd_nam2 == NULL) { 322191783Srmacklem nd->nd_flag |= ND_STREAMSOCK; 323191783Srmacklem isdgram = 0; 324191783Srmacklem } else { 325191783Srmacklem isdgram = 1; 326191783Srmacklem } 327191783Srmacklem 328191783Srmacklem /* 329192780Srmacklem * Two cases: 330191783Srmacklem * 1 - For NFSv2 over UDP, if we are near our malloc/mget 331191783Srmacklem * limit, just drop the request. There is no 332191783Srmacklem * NFSERR_RESOURCE or NFSERR_DELAY for NFSv2 and the 333191783Srmacklem * client will timeout/retry over UDP in a little while. 334192780Srmacklem * 2 - nd_repstat == 0 && nd_mreq == NULL, which 335191783Srmacklem * means a normal nfs rpc, so check the cache 336191783Srmacklem */ 337191783Srmacklem if ((nd->nd_flag & ND_NFSV2) && nd->nd_nam2 != NULL && 338191783Srmacklem nfsrv_mallocmget_limit()) { 339191783Srmacklem cacherep = RC_DROPIT; 340191783Srmacklem } else { 341191783Srmacklem /* 342191783Srmacklem * For NFSv3, play it safe and assume that the client is 343191783Srmacklem * doing retries on the same TCP connection. 344191783Srmacklem */ 345191783Srmacklem if ((nd->nd_flag & (ND_NFSV4 | ND_STREAMSOCK)) == 346191783Srmacklem ND_STREAMSOCK) 347191783Srmacklem nd->nd_flag |= ND_SAMETCPCONN; 348191783Srmacklem nd->nd_retxid = xid; 349191783Srmacklem nd->nd_tcpconntime = NFSD_MONOSEC; 350261055Smav nd->nd_sockref = xprt->xp_sockref; 351269398Srmacklem if ((nd->nd_flag & ND_NFSV4) != 0) 352269398Srmacklem nfsd_getminorvers(nd, tag, &tagstr, &taglen, 353269398Srmacklem &minorvers); 354269398Srmacklem if ((nd->nd_flag & ND_NFSV41) != 0) 355269398Srmacklem /* NFSv4.1 caches replies in the session slots. */ 356269398Srmacklem cacherep = RC_DOIT; 357269398Srmacklem else { 358269398Srmacklem cacherep = nfsrvd_getcache(nd); 359269398Srmacklem ack = 0; 360269398Srmacklem SVC_ACK(xprt, &ack); 361269398Srmacklem nfsrc_trimcache(xprt->xp_sockref, ack, 0); 362269398Srmacklem } 363191783Srmacklem } 364191783Srmacklem 365191783Srmacklem /* 366191783Srmacklem * Handle the request. There are three cases. 367191783Srmacklem * RC_DOIT - do the RPC 368191783Srmacklem * RC_REPLY - return the reply already created 369191783Srmacklem * RC_DROPIT - just throw the request away 370191783Srmacklem */ 371191783Srmacklem if (cacherep == RC_DOIT) { 372269398Srmacklem if ((nd->nd_flag & ND_NFSV41) != 0) 373269398Srmacklem nd->nd_xprt = xprt; 374269398Srmacklem nfsrvd_dorpc(nd, isdgram, tagstr, taglen, minorvers, td); 375269398Srmacklem if ((nd->nd_flag & ND_NFSV41) != 0) { 376269398Srmacklem if (nd->nd_repstat != NFSERR_REPLYFROMCACHE && 377269398Srmacklem (nd->nd_flag & ND_SAVEREPLY) != 0) { 378269398Srmacklem /* Cache a copy of the reply. */ 379269398Srmacklem m = m_copym(nd->nd_mreq, 0, M_COPYALL, 380269398Srmacklem M_WAITOK); 381269398Srmacklem } else 382269398Srmacklem m = NULL; 383269398Srmacklem if ((nd->nd_flag & ND_HASSEQUENCE) != 0) 384269398Srmacklem nfsrv_cache_session(nd->nd_sessionid, 385269398Srmacklem nd->nd_slotid, nd->nd_repstat, &m); 386269398Srmacklem if (nd->nd_repstat == NFSERR_REPLYFROMCACHE) 387269398Srmacklem nd->nd_repstat = 0; 388191783Srmacklem cacherep = RC_REPLY; 389269398Srmacklem } else { 390269398Srmacklem if (nd->nd_repstat == NFSERR_DONTREPLY) 391269398Srmacklem cacherep = RC_DROPIT; 392269398Srmacklem else 393269398Srmacklem cacherep = RC_REPLY; 394269398Srmacklem *rpp = nfsrvd_updatecache(nd); 395269398Srmacklem } 396191783Srmacklem } 397269398Srmacklem if (tagstr != NULL && taglen > NFSV4_SMALLSTR) 398269398Srmacklem free(tagstr, M_TEMP); 399224086Szack 400224086Szack NFSEXITCODE2(0, nd); 401191783Srmacklem return (cacherep); 402191783Srmacklem} 403191783Srmacklem 404261055Smavstatic void 405261055Smavnfssvc_loss(SVCXPRT *xprt) 406261055Smav{ 407261055Smav uint32_t ack; 408261055Smav 409261055Smav ack = 0; 410261055Smav SVC_ACK(xprt, &ack); 411261055Smav nfsrc_trimcache(xprt->xp_sockref, ack, 1); 412261055Smav} 413261055Smav 414191783Srmacklem/* 415191783Srmacklem * Adds a socket to the list for servicing by nfsds. 416191783Srmacklem */ 417191783Srmacklemint 418191783Srmacklemnfsrvd_addsock(struct file *fp) 419191783Srmacklem{ 420191783Srmacklem int siz; 421191783Srmacklem struct socket *so; 422224086Szack int error = 0; 423191783Srmacklem SVCXPRT *xprt; 424191783Srmacklem static u_int64_t sockref = 0; 425191783Srmacklem 426191783Srmacklem so = fp->f_data; 427191783Srmacklem 428191783Srmacklem siz = sb_max_adj; 429191783Srmacklem error = soreserve(so, siz, siz); 430224086Szack if (error) 431224086Szack goto out; 432191783Srmacklem 433191783Srmacklem /* 434191783Srmacklem * Steal the socket from userland so that it doesn't close 435191783Srmacklem * unexpectedly. 436191783Srmacklem */ 437191783Srmacklem if (so->so_type == SOCK_DGRAM) 438191783Srmacklem xprt = svc_dg_create(nfsrvd_pool, so, 0, 0); 439191783Srmacklem else 440191783Srmacklem xprt = svc_vc_create(nfsrvd_pool, so, 0, 0); 441191783Srmacklem if (xprt) { 442191783Srmacklem fp->f_ops = &badfileops; 443191783Srmacklem fp->f_data = NULL; 444191783Srmacklem xprt->xp_sockref = ++sockref; 445192782Srmacklem if (nfs_minvers == NFS_VER2) 446192782Srmacklem svc_reg(xprt, NFS_PROG, NFS_VER2, nfssvc_program, 447192782Srmacklem NULL); 448192782Srmacklem if (nfs_minvers <= NFS_VER3 && nfs_maxvers >= NFS_VER3) 449192782Srmacklem svc_reg(xprt, NFS_PROG, NFS_VER3, nfssvc_program, 450192782Srmacklem NULL); 451192782Srmacklem if (nfs_maxvers >= NFS_VER4) 452192782Srmacklem svc_reg(xprt, NFS_PROG, NFS_VER4, nfssvc_program, 453192782Srmacklem NULL); 454261055Smav if (so->so_type == SOCK_STREAM) 455261055Smav svc_loss_reg(xprt, nfssvc_loss); 456194408Srmacklem SVC_RELEASE(xprt); 457191783Srmacklem } 458191783Srmacklem 459224086Szackout: 460224086Szack NFSEXITCODE(error); 461224086Szack return (error); 462191783Srmacklem} 463191783Srmacklem 464191783Srmacklem/* 465191783Srmacklem * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 466191783Srmacklem * until it is killed by a signal. 467191783Srmacklem */ 468191783Srmacklemint 469191783Srmacklemnfsrvd_nfsd(struct thread *td, struct nfsd_nfsd_args *args) 470191783Srmacklem{ 471192017Srmacklem char principal[MAXHOSTNAMELEN + 5]; 472284199Skib struct proc *p; 473224086Szack int error = 0; 474191783Srmacklem bool_t ret2, ret3, ret4; 475191783Srmacklem 476192017Srmacklem error = copyinstr(args->principal, principal, sizeof (principal), 477192017Srmacklem NULL); 478192017Srmacklem if (error) 479224086Szack goto out; 480191783Srmacklem 481191783Srmacklem /* 482191783Srmacklem * Only the first nfsd actually does any work. The RPC code 483191783Srmacklem * adds threads to it as needed. Any extra processes offered 484191783Srmacklem * by nfsd just exit. If nfsd is new enough, it will call us 485191783Srmacklem * once with a structure that specifies how many threads to 486191783Srmacklem * use. 487191783Srmacklem */ 488191783Srmacklem NFSD_LOCK(); 489191783Srmacklem if (newnfs_numnfsd == 0) { 490284199Skib p = td->td_proc; 491284199Skib PROC_LOCK(p); 492284199Skib p->p_flag2 |= P2_AST_SU; 493284199Skib PROC_UNLOCK(p); 494191783Srmacklem newnfs_numnfsd++; 495191783Srmacklem 496191783Srmacklem NFSD_UNLOCK(); 497191783Srmacklem 498192017Srmacklem /* An empty string implies AUTH_SYS only. */ 499192017Srmacklem if (principal[0] != '\0') { 500223309Srmacklem ret2 = rpc_gss_set_svc_name_call(principal, 501223309Srmacklem "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER2); 502223309Srmacklem ret3 = rpc_gss_set_svc_name_call(principal, 503223309Srmacklem "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER3); 504223309Srmacklem ret4 = rpc_gss_set_svc_name_call(principal, 505223309Srmacklem "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER4); 506191783Srmacklem 507223309Srmacklem if (!ret2 || !ret3 || !ret4) 508223309Srmacklem printf("nfsd: can't register svc name\n"); 509191783Srmacklem } 510191783Srmacklem 511192017Srmacklem nfsrvd_pool->sp_minthreads = args->minthreads; 512192017Srmacklem nfsrvd_pool->sp_maxthreads = args->maxthreads; 513191783Srmacklem 514191783Srmacklem svc_run(nfsrvd_pool); 515191783Srmacklem 516192017Srmacklem if (principal[0] != '\0') { 517223309Srmacklem rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER2); 518223309Srmacklem rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER3); 519223309Srmacklem rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER4); 520192017Srmacklem } 521191783Srmacklem 522191783Srmacklem NFSD_LOCK(); 523191783Srmacklem newnfs_numnfsd--; 524191783Srmacklem nfsrvd_init(1); 525284199Skib PROC_LOCK(p); 526284199Skib p->p_flag2 &= ~P2_AST_SU; 527284199Skib PROC_UNLOCK(p); 528191783Srmacklem } 529191783Srmacklem NFSD_UNLOCK(); 530191783Srmacklem 531224086Szackout: 532224086Szack NFSEXITCODE(error); 533224086Szack return (error); 534191783Srmacklem} 535191783Srmacklem 536191783Srmacklem/* 537191783Srmacklem * Initialize the data structures for the server. 538191783Srmacklem * Handshake with any new nfsds starting up to avoid any chance of 539191783Srmacklem * corruption. 540191783Srmacklem */ 541191783Srmacklemvoid 542191783Srmacklemnfsrvd_init(int terminating) 543191783Srmacklem{ 544191783Srmacklem 545191783Srmacklem NFSD_LOCK_ASSERT(); 546191783Srmacklem 547191783Srmacklem if (terminating) { 548217432Srmacklem nfsd_master_proc = NULL; 549191783Srmacklem NFSD_UNLOCK(); 550291869Srmacklem nfsrv_freeallbackchannel_xprts(); 551191783Srmacklem svcpool_destroy(nfsrvd_pool); 552191783Srmacklem nfsrvd_pool = NULL; 553191783Srmacklem NFSD_LOCK(); 554191783Srmacklem } 555191783Srmacklem 556191783Srmacklem NFSD_UNLOCK(); 557191783Srmacklem 558221615Srmacklem nfsrvd_pool = svcpool_create("nfsd", SYSCTL_STATIC_CHILDREN(_vfs_nfsd)); 559191783Srmacklem nfsrvd_pool->sp_rcache = NULL; 560249592Sken nfsrvd_pool->sp_assign = fhanew_assign; 561249592Sken nfsrvd_pool->sp_done = fha_nd_complete; 562191783Srmacklem 563191783Srmacklem NFSD_LOCK(); 564191783Srmacklem} 565191783Srmacklem 566