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: stable/10/sys/fs/nfsserver/nfs_nfsdkrpc.c 314034 2017-02-21 09:29:46Z avg $"); 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. 237300254Srmacklem * The call to nfsv4_lock() that preceeds nfsv4_getref() 238300254Srmacklem * ensures that the acquisition of the exclusive lock 239300254Srmacklem * takes priority over acquisition of the shared lock by 240300254Srmacklem * waiting for any exclusive lock request to complete. 241241561Srmacklem * This must be done here, before the check of 242241561Srmacklem * nfsv4root exports by nfsvno_v4rootexport(). 243241561Srmacklem */ 244241561Srmacklem NFSLOCKV4ROOTMUTEX(); 245300254Srmacklem nfsv4_lock(&nfsd_suspend_lock, 0, NULL, NFSV4ROOTLOCKMUTEXPTR, 246300254Srmacklem NULL); 247241561Srmacklem nfsv4_getref(&nfsd_suspend_lock, NULL, NFSV4ROOTLOCKMUTEXPTR, 248241561Srmacklem NULL); 249241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 250241561Srmacklem 251192780Srmacklem if ((nd.nd_flag & ND_NFSV4) != 0) { 252191783Srmacklem nd.nd_repstat = nfsvno_v4rootexport(&nd); 253192780Srmacklem if (nd.nd_repstat != 0) { 254241561Srmacklem NFSLOCKV4ROOTMUTEX(); 255241561Srmacklem nfsv4_relref(&nfsd_suspend_lock); 256241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 257192780Srmacklem svcerr_weakauth(rqst); 258192780Srmacklem svc_freereq(rqst); 259192780Srmacklem m_freem(nd.nd_mrep); 260224086Szack goto out; 261192780Srmacklem } 262192780Srmacklem } 263191783Srmacklem 264261055Smav cacherep = nfs_proc(&nd, rqst->rq_xid, xprt, &rp); 265241561Srmacklem NFSLOCKV4ROOTMUTEX(); 266241561Srmacklem nfsv4_relref(&nfsd_suspend_lock); 267241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 268191783Srmacklem } else { 269191783Srmacklem NFSMGET(nd.nd_mreq); 270191783Srmacklem nd.nd_mreq->m_len = 0; 271191783Srmacklem cacherep = RC_REPLY; 272191783Srmacklem } 273191783Srmacklem if (nd.nd_mrep != NULL) 274191783Srmacklem m_freem(nd.nd_mrep); 275191783Srmacklem 276191783Srmacklem if (nd.nd_cred != NULL) 277191783Srmacklem crfree(nd.nd_cred); 278191783Srmacklem 279191783Srmacklem if (cacherep == RC_DROPIT) { 280191783Srmacklem if (nd.nd_mreq != NULL) 281191783Srmacklem m_freem(nd.nd_mreq); 282191783Srmacklem svc_freereq(rqst); 283224086Szack goto out; 284191783Srmacklem } 285191783Srmacklem 286191783Srmacklem if (nd.nd_mreq == NULL) { 287191783Srmacklem svcerr_decode(rqst); 288191783Srmacklem svc_freereq(rqst); 289224086Szack goto out; 290191783Srmacklem } 291191783Srmacklem 292191783Srmacklem if (nd.nd_repstat & NFSERR_AUTHERR) { 293191783Srmacklem svcerr_auth(rqst, nd.nd_repstat & ~NFSERR_AUTHERR); 294191783Srmacklem if (nd.nd_mreq != NULL) 295191783Srmacklem m_freem(nd.nd_mreq); 296191783Srmacklem } else if (!svc_sendreply_mbuf(rqst, nd.nd_mreq)) { 297191783Srmacklem svcerr_systemerr(rqst); 298191783Srmacklem } 299261055Smav if (rp != NULL) { 300261055Smav nfsrvd_sentcache(rp, (rqst->rq_reply_seq != 0 || 301261055Smav SVC_ACK(xprt, NULL)), rqst->rq_reply_seq); 302261055Smav } 303191783Srmacklem svc_freereq(rqst); 304224086Szack 305224086Szackout: 306284199Skib if (softdep_ast_cleanup != NULL) 307284199Skib softdep_ast_cleanup(); 308224086Szack NFSEXITCODE(0); 309191783Srmacklem} 310191783Srmacklem 311191783Srmacklem/* 312191783Srmacklem * Check the cache and, optionally, do the RPC. 313191783Srmacklem * Return the appropriate cache response. 314191783Srmacklem */ 315191783Srmacklemstatic int 316261055Smavnfs_proc(struct nfsrv_descript *nd, u_int32_t xid, SVCXPRT *xprt, 317261055Smav struct nfsrvcache **rpp) 318191783Srmacklem{ 319191783Srmacklem struct thread *td = curthread; 320269398Srmacklem int cacherep = RC_DOIT, isdgram, taglen = -1; 321269398Srmacklem struct mbuf *m; 322269398Srmacklem u_char tag[NFSV4_SMALLSTR + 1], *tagstr = NULL; 323269398Srmacklem u_int32_t minorvers = 0; 324261055Smav uint32_t ack; 325191783Srmacklem 326191783Srmacklem *rpp = NULL; 327191783Srmacklem if (nd->nd_nam2 == NULL) { 328191783Srmacklem nd->nd_flag |= ND_STREAMSOCK; 329191783Srmacklem isdgram = 0; 330191783Srmacklem } else { 331191783Srmacklem isdgram = 1; 332191783Srmacklem } 333191783Srmacklem 334191783Srmacklem /* 335192780Srmacklem * Two cases: 336191783Srmacklem * 1 - For NFSv2 over UDP, if we are near our malloc/mget 337191783Srmacklem * limit, just drop the request. There is no 338191783Srmacklem * NFSERR_RESOURCE or NFSERR_DELAY for NFSv2 and the 339191783Srmacklem * client will timeout/retry over UDP in a little while. 340192780Srmacklem * 2 - nd_repstat == 0 && nd_mreq == NULL, which 341191783Srmacklem * means a normal nfs rpc, so check the cache 342191783Srmacklem */ 343191783Srmacklem if ((nd->nd_flag & ND_NFSV2) && nd->nd_nam2 != NULL && 344191783Srmacklem nfsrv_mallocmget_limit()) { 345191783Srmacklem cacherep = RC_DROPIT; 346191783Srmacklem } else { 347191783Srmacklem /* 348191783Srmacklem * For NFSv3, play it safe and assume that the client is 349191783Srmacklem * doing retries on the same TCP connection. 350191783Srmacklem */ 351191783Srmacklem if ((nd->nd_flag & (ND_NFSV4 | ND_STREAMSOCK)) == 352191783Srmacklem ND_STREAMSOCK) 353191783Srmacklem nd->nd_flag |= ND_SAMETCPCONN; 354191783Srmacklem nd->nd_retxid = xid; 355191783Srmacklem nd->nd_tcpconntime = NFSD_MONOSEC; 356261055Smav nd->nd_sockref = xprt->xp_sockref; 357269398Srmacklem if ((nd->nd_flag & ND_NFSV4) != 0) 358269398Srmacklem nfsd_getminorvers(nd, tag, &tagstr, &taglen, 359269398Srmacklem &minorvers); 360269398Srmacklem if ((nd->nd_flag & ND_NFSV41) != 0) 361269398Srmacklem /* NFSv4.1 caches replies in the session slots. */ 362269398Srmacklem cacherep = RC_DOIT; 363269398Srmacklem else { 364269398Srmacklem cacherep = nfsrvd_getcache(nd); 365269398Srmacklem ack = 0; 366269398Srmacklem SVC_ACK(xprt, &ack); 367269398Srmacklem nfsrc_trimcache(xprt->xp_sockref, ack, 0); 368269398Srmacklem } 369191783Srmacklem } 370191783Srmacklem 371191783Srmacklem /* 372191783Srmacklem * Handle the request. There are three cases. 373191783Srmacklem * RC_DOIT - do the RPC 374191783Srmacklem * RC_REPLY - return the reply already created 375191783Srmacklem * RC_DROPIT - just throw the request away 376191783Srmacklem */ 377191783Srmacklem if (cacherep == RC_DOIT) { 378269398Srmacklem if ((nd->nd_flag & ND_NFSV41) != 0) 379269398Srmacklem nd->nd_xprt = xprt; 380269398Srmacklem nfsrvd_dorpc(nd, isdgram, tagstr, taglen, minorvers, td); 381269398Srmacklem if ((nd->nd_flag & ND_NFSV41) != 0) { 382269398Srmacklem if (nd->nd_repstat != NFSERR_REPLYFROMCACHE && 383269398Srmacklem (nd->nd_flag & ND_SAVEREPLY) != 0) { 384269398Srmacklem /* Cache a copy of the reply. */ 385269398Srmacklem m = m_copym(nd->nd_mreq, 0, M_COPYALL, 386269398Srmacklem M_WAITOK); 387269398Srmacklem } else 388269398Srmacklem m = NULL; 389269398Srmacklem if ((nd->nd_flag & ND_HASSEQUENCE) != 0) 390269398Srmacklem nfsrv_cache_session(nd->nd_sessionid, 391269398Srmacklem nd->nd_slotid, nd->nd_repstat, &m); 392269398Srmacklem if (nd->nd_repstat == NFSERR_REPLYFROMCACHE) 393269398Srmacklem nd->nd_repstat = 0; 394191783Srmacklem cacherep = RC_REPLY; 395269398Srmacklem } else { 396269398Srmacklem if (nd->nd_repstat == NFSERR_DONTREPLY) 397269398Srmacklem cacherep = RC_DROPIT; 398269398Srmacklem else 399269398Srmacklem cacherep = RC_REPLY; 400269398Srmacklem *rpp = nfsrvd_updatecache(nd); 401269398Srmacklem } 402191783Srmacklem } 403269398Srmacklem if (tagstr != NULL && taglen > NFSV4_SMALLSTR) 404269398Srmacklem free(tagstr, M_TEMP); 405224086Szack 406224086Szack NFSEXITCODE2(0, nd); 407191783Srmacklem return (cacherep); 408191783Srmacklem} 409191783Srmacklem 410261055Smavstatic void 411261055Smavnfssvc_loss(SVCXPRT *xprt) 412261055Smav{ 413261055Smav uint32_t ack; 414261055Smav 415261055Smav ack = 0; 416261055Smav SVC_ACK(xprt, &ack); 417261055Smav nfsrc_trimcache(xprt->xp_sockref, ack, 1); 418261055Smav} 419261055Smav 420191783Srmacklem/* 421191783Srmacklem * Adds a socket to the list for servicing by nfsds. 422191783Srmacklem */ 423191783Srmacklemint 424191783Srmacklemnfsrvd_addsock(struct file *fp) 425191783Srmacklem{ 426191783Srmacklem int siz; 427191783Srmacklem struct socket *so; 428224086Szack int error = 0; 429191783Srmacklem SVCXPRT *xprt; 430191783Srmacklem static u_int64_t sockref = 0; 431191783Srmacklem 432191783Srmacklem so = fp->f_data; 433191783Srmacklem 434191783Srmacklem siz = sb_max_adj; 435191783Srmacklem error = soreserve(so, siz, siz); 436224086Szack if (error) 437224086Szack goto out; 438191783Srmacklem 439191783Srmacklem /* 440191783Srmacklem * Steal the socket from userland so that it doesn't close 441191783Srmacklem * unexpectedly. 442191783Srmacklem */ 443191783Srmacklem if (so->so_type == SOCK_DGRAM) 444191783Srmacklem xprt = svc_dg_create(nfsrvd_pool, so, 0, 0); 445191783Srmacklem else 446191783Srmacklem xprt = svc_vc_create(nfsrvd_pool, so, 0, 0); 447191783Srmacklem if (xprt) { 448191783Srmacklem fp->f_ops = &badfileops; 449191783Srmacklem fp->f_data = NULL; 450191783Srmacklem xprt->xp_sockref = ++sockref; 451192782Srmacklem if (nfs_minvers == NFS_VER2) 452192782Srmacklem svc_reg(xprt, NFS_PROG, NFS_VER2, nfssvc_program, 453192782Srmacklem NULL); 454192782Srmacklem if (nfs_minvers <= NFS_VER3 && nfs_maxvers >= NFS_VER3) 455192782Srmacklem svc_reg(xprt, NFS_PROG, NFS_VER3, nfssvc_program, 456192782Srmacklem NULL); 457192782Srmacklem if (nfs_maxvers >= NFS_VER4) 458192782Srmacklem svc_reg(xprt, NFS_PROG, NFS_VER4, nfssvc_program, 459192782Srmacklem NULL); 460261055Smav if (so->so_type == SOCK_STREAM) 461261055Smav svc_loss_reg(xprt, nfssvc_loss); 462194408Srmacklem SVC_RELEASE(xprt); 463191783Srmacklem } 464191783Srmacklem 465224086Szackout: 466224086Szack NFSEXITCODE(error); 467224086Szack return (error); 468191783Srmacklem} 469191783Srmacklem 470191783Srmacklem/* 471191783Srmacklem * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 472191783Srmacklem * until it is killed by a signal. 473191783Srmacklem */ 474191783Srmacklemint 475191783Srmacklemnfsrvd_nfsd(struct thread *td, struct nfsd_nfsd_args *args) 476191783Srmacklem{ 477192017Srmacklem char principal[MAXHOSTNAMELEN + 5]; 478284199Skib struct proc *p; 479224086Szack int error = 0; 480191783Srmacklem bool_t ret2, ret3, ret4; 481191783Srmacklem 482192017Srmacklem error = copyinstr(args->principal, principal, sizeof (principal), 483192017Srmacklem NULL); 484192017Srmacklem if (error) 485224086Szack goto out; 486191783Srmacklem 487191783Srmacklem /* 488191783Srmacklem * Only the first nfsd actually does any work. The RPC code 489191783Srmacklem * adds threads to it as needed. Any extra processes offered 490191783Srmacklem * by nfsd just exit. If nfsd is new enough, it will call us 491191783Srmacklem * once with a structure that specifies how many threads to 492191783Srmacklem * use. 493191783Srmacklem */ 494191783Srmacklem NFSD_LOCK(); 495191783Srmacklem if (newnfs_numnfsd == 0) { 496284199Skib p = td->td_proc; 497284199Skib PROC_LOCK(p); 498284199Skib p->p_flag2 |= P2_AST_SU; 499284199Skib PROC_UNLOCK(p); 500191783Srmacklem newnfs_numnfsd++; 501191783Srmacklem 502191783Srmacklem NFSD_UNLOCK(); 503191783Srmacklem 504192017Srmacklem /* An empty string implies AUTH_SYS only. */ 505192017Srmacklem if (principal[0] != '\0') { 506223309Srmacklem ret2 = rpc_gss_set_svc_name_call(principal, 507223309Srmacklem "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER2); 508223309Srmacklem ret3 = rpc_gss_set_svc_name_call(principal, 509223309Srmacklem "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER3); 510223309Srmacklem ret4 = rpc_gss_set_svc_name_call(principal, 511223309Srmacklem "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER4); 512191783Srmacklem 513223309Srmacklem if (!ret2 || !ret3 || !ret4) 514223309Srmacklem printf("nfsd: can't register svc name\n"); 515191783Srmacklem } 516191783Srmacklem 517192017Srmacklem nfsrvd_pool->sp_minthreads = args->minthreads; 518192017Srmacklem nfsrvd_pool->sp_maxthreads = args->maxthreads; 519191783Srmacklem 520191783Srmacklem svc_run(nfsrvd_pool); 521191783Srmacklem 522192017Srmacklem if (principal[0] != '\0') { 523223309Srmacklem rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER2); 524223309Srmacklem rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER3); 525223309Srmacklem rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER4); 526192017Srmacklem } 527191783Srmacklem 528191783Srmacklem NFSD_LOCK(); 529191783Srmacklem newnfs_numnfsd--; 530191783Srmacklem nfsrvd_init(1); 531284199Skib PROC_LOCK(p); 532284199Skib p->p_flag2 &= ~P2_AST_SU; 533284199Skib PROC_UNLOCK(p); 534191783Srmacklem } 535191783Srmacklem NFSD_UNLOCK(); 536191783Srmacklem 537224086Szackout: 538224086Szack NFSEXITCODE(error); 539224086Szack return (error); 540191783Srmacklem} 541191783Srmacklem 542191783Srmacklem/* 543191783Srmacklem * Initialize the data structures for the server. 544191783Srmacklem * Handshake with any new nfsds starting up to avoid any chance of 545191783Srmacklem * corruption. 546191783Srmacklem */ 547191783Srmacklemvoid 548191783Srmacklemnfsrvd_init(int terminating) 549191783Srmacklem{ 550191783Srmacklem 551191783Srmacklem NFSD_LOCK_ASSERT(); 552191783Srmacklem 553191783Srmacklem if (terminating) { 554217432Srmacklem nfsd_master_proc = NULL; 555191783Srmacklem NFSD_UNLOCK(); 556291869Srmacklem nfsrv_freeallbackchannel_xprts(); 557314034Savg svcpool_close(nfsrvd_pool); 558191783Srmacklem NFSD_LOCK(); 559314034Savg } else { 560314034Savg NFSD_UNLOCK(); 561314034Savg nfsrvd_pool = svcpool_create("nfsd", 562314034Savg SYSCTL_STATIC_CHILDREN(_vfs_nfsd)); 563314034Savg nfsrvd_pool->sp_rcache = NULL; 564314034Savg nfsrvd_pool->sp_assign = fhanew_assign; 565314034Savg nfsrvd_pool->sp_done = fha_nd_complete; 566314034Savg NFSD_LOCK(); 567191783Srmacklem } 568191783Srmacklem} 569191783Srmacklem 570