nfs_nfsdkrpc.c revision 1.2.10.2
1 1.2.10.2 tls /* $NetBSD: nfs_nfsdkrpc.c,v 1.2.10.2 2014/08/20 00:04:27 tls Exp $ */ 2 1.2.10.2 tls /*- 3 1.2.10.2 tls * Copyright (c) 1989, 1993 4 1.2.10.2 tls * The Regents of the University of California. All rights reserved. 5 1.2.10.2 tls * 6 1.2.10.2 tls * This code is derived from software contributed to Berkeley by 7 1.2.10.2 tls * Rick Macklem at The University of Guelph. 8 1.2.10.2 tls * 9 1.2.10.2 tls * Redistribution and use in source and binary forms, with or without 10 1.2.10.2 tls * modification, are permitted provided that the following conditions 11 1.2.10.2 tls * are met: 12 1.2.10.2 tls * 1. Redistributions of source code must retain the above copyright 13 1.2.10.2 tls * notice, this list of conditions and the following disclaimer. 14 1.2.10.2 tls * 2. Redistributions in binary form must reproduce the above copyright 15 1.2.10.2 tls * notice, this list of conditions and the following disclaimer in the 16 1.2.10.2 tls * documentation and/or other materials provided with the distribution. 17 1.2.10.2 tls * 4. Neither the name of the University nor the names of its contributors 18 1.2.10.2 tls * may be used to endorse or promote products derived from this software 19 1.2.10.2 tls * without specific prior written permission. 20 1.2.10.2 tls * 21 1.2.10.2 tls * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 1.2.10.2 tls * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 1.2.10.2 tls * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 1.2.10.2 tls * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 1.2.10.2 tls * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 1.2.10.2 tls * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 1.2.10.2 tls * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 1.2.10.2 tls * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 1.2.10.2 tls * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 1.2.10.2 tls * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 1.2.10.2 tls * SUCH DAMAGE. 32 1.2.10.2 tls * 33 1.2.10.2 tls */ 34 1.2.10.2 tls 35 1.2.10.2 tls #include <sys/cdefs.h> 36 1.2.10.2 tls /* __FBSDID("FreeBSD: head/sys/fs/nfsserver/nfs_nfsdkrpc.c 249596 2013-04-17 22:42:43Z ken "); */ 37 1.2.10.2 tls __RCSID("$NetBSD: nfs_nfsdkrpc.c,v 1.2.10.2 2014/08/20 00:04:27 tls Exp $"); 38 1.2.10.2 tls 39 1.2.10.2 tls #include "opt_inet6.h" 40 1.2.10.2 tls #include "opt_kgssapi.h" 41 1.2.10.2 tls 42 1.2.10.2 tls #include <fs/nfs/nfsport.h> 43 1.2.10.2 tls 44 1.2.10.2 tls #include <rpc/rpc.h> 45 1.2.10.2 tls #include <rpc/rpcsec_gss.h> 46 1.2.10.2 tls 47 1.2.10.2 tls #include <nfs/nfs_fha.h> 48 1.2.10.2 tls #include <fs/nfsserver/nfs_fha_new.h> 49 1.2.10.2 tls 50 1.2.10.2 tls #include <security/mac/mac_framework.h> 51 1.2.10.2 tls 52 1.2.10.2 tls NFSDLOCKMUTEX; 53 1.2.10.2 tls NFSV4ROOTLOCKMUTEX; 54 1.2.10.2 tls struct nfsv4lock nfsd_suspend_lock; 55 1.2.10.2 tls 56 1.2.10.2 tls /* 57 1.2.10.2 tls * Mapping of old NFS Version 2 RPC numbers to generic numbers. 58 1.2.10.2 tls */ 59 1.2.10.2 tls int newnfs_nfsv3_procid[NFS_V3NPROCS] = { 60 1.2.10.2 tls NFSPROC_NULL, 61 1.2.10.2 tls NFSPROC_GETATTR, 62 1.2.10.2 tls NFSPROC_SETATTR, 63 1.2.10.2 tls NFSPROC_NOOP, 64 1.2.10.2 tls NFSPROC_LOOKUP, 65 1.2.10.2 tls NFSPROC_READLINK, 66 1.2.10.2 tls NFSPROC_READ, 67 1.2.10.2 tls NFSPROC_NOOP, 68 1.2.10.2 tls NFSPROC_WRITE, 69 1.2.10.2 tls NFSPROC_CREATE, 70 1.2.10.2 tls NFSPROC_REMOVE, 71 1.2.10.2 tls NFSPROC_RENAME, 72 1.2.10.2 tls NFSPROC_LINK, 73 1.2.10.2 tls NFSPROC_SYMLINK, 74 1.2.10.2 tls NFSPROC_MKDIR, 75 1.2.10.2 tls NFSPROC_RMDIR, 76 1.2.10.2 tls NFSPROC_READDIR, 77 1.2.10.2 tls NFSPROC_FSSTAT, 78 1.2.10.2 tls NFSPROC_NOOP, 79 1.2.10.2 tls NFSPROC_NOOP, 80 1.2.10.2 tls NFSPROC_NOOP, 81 1.2.10.2 tls NFSPROC_NOOP, 82 1.2.10.2 tls }; 83 1.2.10.2 tls 84 1.2.10.2 tls 85 1.2.10.2 tls SYSCTL_DECL(_vfs_nfsd); 86 1.2.10.2 tls 87 1.2.10.2 tls SVCPOOL *nfsrvd_pool; 88 1.2.10.2 tls 89 1.2.10.2 tls static int nfs_privport = 0; 90 1.2.10.2 tls SYSCTL_INT(_vfs_nfsd, OID_AUTO, nfs_privport, CTLFLAG_RW, 91 1.2.10.2 tls &nfs_privport, 0, 92 1.2.10.2 tls "Only allow clients using a privileged port for NFSv2 and 3"); 93 1.2.10.2 tls 94 1.2.10.2 tls static int nfs_minvers = NFS_VER2; 95 1.2.10.2 tls SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_min_nfsvers, CTLFLAG_RW, 96 1.2.10.2 tls &nfs_minvers, 0, "The lowest version of NFS handled by the server"); 97 1.2.10.2 tls 98 1.2.10.2 tls static int nfs_maxvers = NFS_VER4; 99 1.2.10.2 tls SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_max_nfsvers, CTLFLAG_RW, 100 1.2.10.2 tls &nfs_maxvers, 0, "The highest version of NFS handled by the server"); 101 1.2.10.2 tls 102 1.2.10.2 tls static int nfs_proc(struct nfsrv_descript *, u_int32_t, struct socket *, 103 1.2.10.2 tls u_int64_t, struct nfsrvcache **); 104 1.2.10.2 tls 105 1.2.10.2 tls extern u_long sb_max_adj; 106 1.2.10.2 tls extern int newnfs_numnfsd; 107 1.2.10.2 tls extern struct proc *nfsd_master_proc; 108 1.2.10.2 tls 109 1.2.10.2 tls /* 110 1.2.10.2 tls * NFS server system calls 111 1.2.10.2 tls */ 112 1.2.10.2 tls 113 1.2.10.2 tls static void 114 1.2.10.2 tls nfssvc_program(struct svc_req *rqst, SVCXPRT *xprt) 115 1.2.10.2 tls { 116 1.2.10.2 tls struct nfsrv_descript nd; 117 1.2.10.2 tls struct nfsrvcache *rp = NULL; 118 1.2.10.2 tls int cacherep, credflavor; 119 1.2.10.2 tls 120 1.2.10.2 tls memset(&nd, 0, sizeof(nd)); 121 1.2.10.2 tls if (rqst->rq_vers == NFS_VER2) { 122 1.2.10.2 tls if (rqst->rq_proc > NFSV2PROC_STATFS) { 123 1.2.10.2 tls svcerr_noproc(rqst); 124 1.2.10.2 tls svc_freereq(rqst); 125 1.2.10.2 tls goto out; 126 1.2.10.2 tls } 127 1.2.10.2 tls nd.nd_procnum = newnfs_nfsv3_procid[rqst->rq_proc]; 128 1.2.10.2 tls nd.nd_flag = ND_NFSV2; 129 1.2.10.2 tls } else if (rqst->rq_vers == NFS_VER3) { 130 1.2.10.2 tls if (rqst->rq_proc >= NFS_V3NPROCS) { 131 1.2.10.2 tls svcerr_noproc(rqst); 132 1.2.10.2 tls svc_freereq(rqst); 133 1.2.10.2 tls goto out; 134 1.2.10.2 tls } 135 1.2.10.2 tls nd.nd_procnum = rqst->rq_proc; 136 1.2.10.2 tls nd.nd_flag = ND_NFSV3; 137 1.2.10.2 tls } else { 138 1.2.10.2 tls if (rqst->rq_proc != NFSPROC_NULL && 139 1.2.10.2 tls rqst->rq_proc != NFSV4PROC_COMPOUND) { 140 1.2.10.2 tls svcerr_noproc(rqst); 141 1.2.10.2 tls svc_freereq(rqst); 142 1.2.10.2 tls goto out; 143 1.2.10.2 tls } 144 1.2.10.2 tls nd.nd_procnum = rqst->rq_proc; 145 1.2.10.2 tls nd.nd_flag = ND_NFSV4; 146 1.2.10.2 tls } 147 1.2.10.2 tls 148 1.2.10.2 tls /* 149 1.2.10.2 tls * Note: we want rq_addr, not svc_getrpccaller for nd_nam2 - 150 1.2.10.2 tls * NFS_SRVMAXDATA uses a NULL value for nd_nam2 to detect TCP 151 1.2.10.2 tls * mounts. 152 1.2.10.2 tls */ 153 1.2.10.2 tls nd.nd_mrep = rqst->rq_args; 154 1.2.10.2 tls rqst->rq_args = NULL; 155 1.2.10.2 tls newnfs_realign(&nd.nd_mrep, M_WAITOK); 156 1.2.10.2 tls nd.nd_md = nd.nd_mrep; 157 1.2.10.2 tls nd.nd_dpos = mtod(nd.nd_md, caddr_t); 158 1.2.10.2 tls nd.nd_nam = svc_getrpccaller(rqst); 159 1.2.10.2 tls nd.nd_nam2 = rqst->rq_addr; 160 1.2.10.2 tls nd.nd_mreq = NULL; 161 1.2.10.2 tls nd.nd_cred = NULL; 162 1.2.10.2 tls 163 1.2.10.2 tls if (nfs_privport && (nd.nd_flag & ND_NFSV4) == 0) { 164 1.2.10.2 tls /* Check if source port is privileged */ 165 1.2.10.2 tls u_short port; 166 1.2.10.2 tls struct sockaddr *nam = nd.nd_nam; 167 1.2.10.2 tls struct sockaddr_in *sin; 168 1.2.10.2 tls 169 1.2.10.2 tls sin = (struct sockaddr_in *)nam; 170 1.2.10.2 tls /* 171 1.2.10.2 tls * INET/INET6 - same code: 172 1.2.10.2 tls * sin_port and sin6_port are at same offset 173 1.2.10.2 tls */ 174 1.2.10.2 tls port = ntohs(sin->sin_port); 175 1.2.10.2 tls if (port >= IPPORT_RESERVED && 176 1.2.10.2 tls nd.nd_procnum != NFSPROC_NULL) { 177 1.2.10.2 tls #ifdef INET6 178 1.2.10.2 tls char b6[INET6_ADDRSTRLEN]; 179 1.2.10.2 tls #if defined(KLD_MODULE) 180 1.2.10.2 tls /* Do not use ip6_sprintf: the nfs module should work without INET6. */ 181 1.2.10.2 tls #define ip6_sprintf(buf, a) \ 182 1.2.10.2 tls (snprintf((buf), sizeof(buf), "%x:%x:%x:%x:%x:%x:%x:%x", \ 183 1.2.10.2 tls (a)->s6_addr16[0], (a)->s6_addr16[1], \ 184 1.2.10.2 tls (a)->s6_addr16[2], (a)->s6_addr16[3], \ 185 1.2.10.2 tls (a)->s6_addr16[4], (a)->s6_addr16[5], \ 186 1.2.10.2 tls (a)->s6_addr16[6], (a)->s6_addr16[7]), \ 187 1.2.10.2 tls (buf)) 188 1.2.10.2 tls #endif 189 1.2.10.2 tls #endif 190 1.2.10.2 tls printf("NFS request from unprivileged port (%s:%d)\n", 191 1.2.10.2 tls #ifdef INET6 192 1.2.10.2 tls sin->sin_family == AF_INET6 ? 193 1.2.10.2 tls ip6_sprintf(b6, &satosin6(sin)->sin6_addr) : 194 1.2.10.2 tls #if defined(KLD_MODULE) 195 1.2.10.2 tls #undef ip6_sprintf 196 1.2.10.2 tls #endif 197 1.2.10.2 tls #endif 198 1.2.10.2 tls inet_ntoa(sin->sin_addr), port); 199 1.2.10.2 tls svcerr_weakauth(rqst); 200 1.2.10.2 tls svc_freereq(rqst); 201 1.2.10.2 tls m_freem(nd.nd_mrep); 202 1.2.10.2 tls goto out; 203 1.2.10.2 tls } 204 1.2.10.2 tls } 205 1.2.10.2 tls 206 1.2.10.2 tls if (nd.nd_procnum != NFSPROC_NULL) { 207 1.2.10.2 tls if (!svc_getcred(rqst, &nd.nd_cred, &credflavor)) { 208 1.2.10.2 tls svcerr_weakauth(rqst); 209 1.2.10.2 tls svc_freereq(rqst); 210 1.2.10.2 tls m_freem(nd.nd_mrep); 211 1.2.10.2 tls goto out; 212 1.2.10.2 tls } 213 1.2.10.2 tls 214 1.2.10.2 tls /* Set the flag based on credflavor */ 215 1.2.10.2 tls if (credflavor == RPCSEC_GSS_KRB5) { 216 1.2.10.2 tls nd.nd_flag |= ND_GSS; 217 1.2.10.2 tls } else if (credflavor == RPCSEC_GSS_KRB5I) { 218 1.2.10.2 tls nd.nd_flag |= (ND_GSS | ND_GSSINTEGRITY); 219 1.2.10.2 tls } else if (credflavor == RPCSEC_GSS_KRB5P) { 220 1.2.10.2 tls nd.nd_flag |= (ND_GSS | ND_GSSPRIVACY); 221 1.2.10.2 tls } else if (credflavor != AUTH_SYS) { 222 1.2.10.2 tls svcerr_weakauth(rqst); 223 1.2.10.2 tls svc_freereq(rqst); 224 1.2.10.2 tls m_freem(nd.nd_mrep); 225 1.2.10.2 tls goto out; 226 1.2.10.2 tls } 227 1.2.10.2 tls 228 1.2.10.2 tls #ifdef MAC 229 1.2.10.2 tls mac_cred_associate_nfsd(nd.nd_cred); 230 1.2.10.2 tls #endif 231 1.2.10.2 tls /* 232 1.2.10.2 tls * Get a refcnt (shared lock) on nfsd_suspend_lock. 233 1.2.10.2 tls * NFSSVC_SUSPENDNFSD will take an exclusive lock on 234 1.2.10.2 tls * nfsd_suspend_lock to suspend these threads. 235 1.2.10.2 tls * This must be done here, before the check of 236 1.2.10.2 tls * nfsv4root exports by nfsvno_v4rootexport(). 237 1.2.10.2 tls */ 238 1.2.10.2 tls NFSLOCKV4ROOTMUTEX(); 239 1.2.10.2 tls nfsv4_getref(&nfsd_suspend_lock, NULL, NFSV4ROOTLOCKMUTEXPTR, 240 1.2.10.2 tls NULL); 241 1.2.10.2 tls NFSUNLOCKV4ROOTMUTEX(); 242 1.2.10.2 tls 243 1.2.10.2 tls if ((nd.nd_flag & ND_NFSV4) != 0) { 244 1.2.10.2 tls nd.nd_repstat = nfsvno_v4rootexport(&nd); 245 1.2.10.2 tls if (nd.nd_repstat != 0) { 246 1.2.10.2 tls NFSLOCKV4ROOTMUTEX(); 247 1.2.10.2 tls nfsv4_relref(&nfsd_suspend_lock); 248 1.2.10.2 tls NFSUNLOCKV4ROOTMUTEX(); 249 1.2.10.2 tls svcerr_weakauth(rqst); 250 1.2.10.2 tls svc_freereq(rqst); 251 1.2.10.2 tls m_freem(nd.nd_mrep); 252 1.2.10.2 tls goto out; 253 1.2.10.2 tls } 254 1.2.10.2 tls } 255 1.2.10.2 tls 256 1.2.10.2 tls cacherep = nfs_proc(&nd, rqst->rq_xid, xprt->xp_socket, 257 1.2.10.2 tls xprt->xp_sockref, &rp); 258 1.2.10.2 tls NFSLOCKV4ROOTMUTEX(); 259 1.2.10.2 tls nfsv4_relref(&nfsd_suspend_lock); 260 1.2.10.2 tls NFSUNLOCKV4ROOTMUTEX(); 261 1.2.10.2 tls } else { 262 1.2.10.2 tls NFSMGET(nd.nd_mreq); 263 1.2.10.2 tls nd.nd_mreq->m_len = 0; 264 1.2.10.2 tls cacherep = RC_REPLY; 265 1.2.10.2 tls } 266 1.2.10.2 tls if (nd.nd_mrep != NULL) 267 1.2.10.2 tls m_freem(nd.nd_mrep); 268 1.2.10.2 tls 269 1.2.10.2 tls if (nd.nd_cred != NULL) 270 1.2.10.2 tls crfree(nd.nd_cred); 271 1.2.10.2 tls 272 1.2.10.2 tls if (cacherep == RC_DROPIT) { 273 1.2.10.2 tls if (nd.nd_mreq != NULL) 274 1.2.10.2 tls m_freem(nd.nd_mreq); 275 1.2.10.2 tls svc_freereq(rqst); 276 1.2.10.2 tls goto out; 277 1.2.10.2 tls } 278 1.2.10.2 tls 279 1.2.10.2 tls if (nd.nd_mreq == NULL) { 280 1.2.10.2 tls svcerr_decode(rqst); 281 1.2.10.2 tls svc_freereq(rqst); 282 1.2.10.2 tls goto out; 283 1.2.10.2 tls } 284 1.2.10.2 tls 285 1.2.10.2 tls if (nd.nd_repstat & NFSERR_AUTHERR) { 286 1.2.10.2 tls svcerr_auth(rqst, nd.nd_repstat & ~NFSERR_AUTHERR); 287 1.2.10.2 tls if (nd.nd_mreq != NULL) 288 1.2.10.2 tls m_freem(nd.nd_mreq); 289 1.2.10.2 tls } else if (!svc_sendreply_mbuf(rqst, nd.nd_mreq)) { 290 1.2.10.2 tls svcerr_systemerr(rqst); 291 1.2.10.2 tls } 292 1.2.10.2 tls if (rp != NULL) 293 1.2.10.2 tls nfsrvd_sentcache(rp, xprt->xp_socket, 0); 294 1.2.10.2 tls svc_freereq(rqst); 295 1.2.10.2 tls 296 1.2.10.2 tls out: 297 1.2.10.2 tls NFSEXITCODE(0); 298 1.2.10.2 tls } 299 1.2.10.2 tls 300 1.2.10.2 tls /* 301 1.2.10.2 tls * Check the cache and, optionally, do the RPC. 302 1.2.10.2 tls * Return the appropriate cache response. 303 1.2.10.2 tls */ 304 1.2.10.2 tls static int 305 1.2.10.2 tls nfs_proc(struct nfsrv_descript *nd, u_int32_t xid, struct socket *so, 306 1.2.10.2 tls u_int64_t sockref, struct nfsrvcache **rpp) 307 1.2.10.2 tls { 308 1.2.10.2 tls struct thread *td = curthread; 309 1.2.10.2 tls int cacherep = RC_DOIT, isdgram; 310 1.2.10.2 tls 311 1.2.10.2 tls *rpp = NULL; 312 1.2.10.2 tls if (nd->nd_nam2 == NULL) { 313 1.2.10.2 tls nd->nd_flag |= ND_STREAMSOCK; 314 1.2.10.2 tls isdgram = 0; 315 1.2.10.2 tls } else { 316 1.2.10.2 tls isdgram = 1; 317 1.2.10.2 tls } 318 1.2.10.2 tls 319 1.2.10.2 tls /* 320 1.2.10.2 tls * Two cases: 321 1.2.10.2 tls * 1 - For NFSv2 over UDP, if we are near our malloc/mget 322 1.2.10.2 tls * limit, just drop the request. There is no 323 1.2.10.2 tls * NFSERR_RESOURCE or NFSERR_DELAY for NFSv2 and the 324 1.2.10.2 tls * client will timeout/retry over UDP in a little while. 325 1.2.10.2 tls * 2 - nd_repstat == 0 && nd_mreq == NULL, which 326 1.2.10.2 tls * means a normal nfs rpc, so check the cache 327 1.2.10.2 tls */ 328 1.2.10.2 tls if ((nd->nd_flag & ND_NFSV2) && nd->nd_nam2 != NULL && 329 1.2.10.2 tls nfsrv_mallocmget_limit()) { 330 1.2.10.2 tls cacherep = RC_DROPIT; 331 1.2.10.2 tls } else { 332 1.2.10.2 tls /* 333 1.2.10.2 tls * For NFSv3, play it safe and assume that the client is 334 1.2.10.2 tls * doing retries on the same TCP connection. 335 1.2.10.2 tls */ 336 1.2.10.2 tls if ((nd->nd_flag & (ND_NFSV4 | ND_STREAMSOCK)) == 337 1.2.10.2 tls ND_STREAMSOCK) 338 1.2.10.2 tls nd->nd_flag |= ND_SAMETCPCONN; 339 1.2.10.2 tls nd->nd_retxid = xid; 340 1.2.10.2 tls nd->nd_tcpconntime = NFSD_MONOSEC; 341 1.2.10.2 tls nd->nd_sockref = sockref; 342 1.2.10.2 tls cacherep = nfsrvd_getcache(nd, so); 343 1.2.10.2 tls } 344 1.2.10.2 tls 345 1.2.10.2 tls /* 346 1.2.10.2 tls * Handle the request. There are three cases. 347 1.2.10.2 tls * RC_DOIT - do the RPC 348 1.2.10.2 tls * RC_REPLY - return the reply already created 349 1.2.10.2 tls * RC_DROPIT - just throw the request away 350 1.2.10.2 tls */ 351 1.2.10.2 tls if (cacherep == RC_DOIT) { 352 1.2.10.2 tls nfsrvd_dorpc(nd, isdgram, td); 353 1.2.10.2 tls if (nd->nd_repstat == NFSERR_DONTREPLY) 354 1.2.10.2 tls cacherep = RC_DROPIT; 355 1.2.10.2 tls else 356 1.2.10.2 tls cacherep = RC_REPLY; 357 1.2.10.2 tls *rpp = nfsrvd_updatecache(nd, so); 358 1.2.10.2 tls } 359 1.2.10.2 tls 360 1.2.10.2 tls NFSEXITCODE2(0, nd); 361 1.2.10.2 tls return (cacherep); 362 1.2.10.2 tls } 363 1.2.10.2 tls 364 1.2.10.2 tls /* 365 1.2.10.2 tls * Adds a socket to the list for servicing by nfsds. 366 1.2.10.2 tls */ 367 1.2.10.2 tls int 368 1.2.10.2 tls nfsrvd_addsock(struct file *fp) 369 1.2.10.2 tls { 370 1.2.10.2 tls int siz; 371 1.2.10.2 tls struct socket *so; 372 1.2.10.2 tls int error = 0; 373 1.2.10.2 tls SVCXPRT *xprt; 374 1.2.10.2 tls static u_int64_t sockref = 0; 375 1.2.10.2 tls 376 1.2.10.2 tls so = fp->f_data; 377 1.2.10.2 tls 378 1.2.10.2 tls siz = sb_max_adj; 379 1.2.10.2 tls error = soreserve(so, siz, siz); 380 1.2.10.2 tls if (error) 381 1.2.10.2 tls goto out; 382 1.2.10.2 tls 383 1.2.10.2 tls /* 384 1.2.10.2 tls * Steal the socket from userland so that it doesn't close 385 1.2.10.2 tls * unexpectedly. 386 1.2.10.2 tls */ 387 1.2.10.2 tls if (so->so_type == SOCK_DGRAM) 388 1.2.10.2 tls xprt = svc_dg_create(nfsrvd_pool, so, 0, 0); 389 1.2.10.2 tls else 390 1.2.10.2 tls xprt = svc_vc_create(nfsrvd_pool, so, 0, 0); 391 1.2.10.2 tls if (xprt) { 392 1.2.10.2 tls fp->f_ops = &badfileops; 393 1.2.10.2 tls fp->f_data = NULL; 394 1.2.10.2 tls xprt->xp_sockref = ++sockref; 395 1.2.10.2 tls if (nfs_minvers == NFS_VER2) 396 1.2.10.2 tls svc_reg(xprt, NFS_PROG, NFS_VER2, nfssvc_program, 397 1.2.10.2 tls NULL); 398 1.2.10.2 tls if (nfs_minvers <= NFS_VER3 && nfs_maxvers >= NFS_VER3) 399 1.2.10.2 tls svc_reg(xprt, NFS_PROG, NFS_VER3, nfssvc_program, 400 1.2.10.2 tls NULL); 401 1.2.10.2 tls if (nfs_maxvers >= NFS_VER4) 402 1.2.10.2 tls svc_reg(xprt, NFS_PROG, NFS_VER4, nfssvc_program, 403 1.2.10.2 tls NULL); 404 1.2.10.2 tls SVC_RELEASE(xprt); 405 1.2.10.2 tls } 406 1.2.10.2 tls 407 1.2.10.2 tls out: 408 1.2.10.2 tls NFSEXITCODE(error); 409 1.2.10.2 tls return (error); 410 1.2.10.2 tls } 411 1.2.10.2 tls 412 1.2.10.2 tls /* 413 1.2.10.2 tls * Called by nfssvc() for nfsds. Just loops around servicing rpc requests 414 1.2.10.2 tls * until it is killed by a signal. 415 1.2.10.2 tls */ 416 1.2.10.2 tls int 417 1.2.10.2 tls nfsrvd_nfsd(struct thread *td, struct nfsd_nfsd_args *args) 418 1.2.10.2 tls { 419 1.2.10.2 tls char principal[MAXHOSTNAMELEN + 5]; 420 1.2.10.2 tls int error = 0; 421 1.2.10.2 tls bool_t ret2, ret3, ret4; 422 1.2.10.2 tls 423 1.2.10.2 tls error = copyinstr(args->principal, principal, sizeof (principal), 424 1.2.10.2 tls NULL); 425 1.2.10.2 tls if (error) 426 1.2.10.2 tls goto out; 427 1.2.10.2 tls 428 1.2.10.2 tls /* 429 1.2.10.2 tls * Only the first nfsd actually does any work. The RPC code 430 1.2.10.2 tls * adds threads to it as needed. Any extra processes offered 431 1.2.10.2 tls * by nfsd just exit. If nfsd is new enough, it will call us 432 1.2.10.2 tls * once with a structure that specifies how many threads to 433 1.2.10.2 tls * use. 434 1.2.10.2 tls */ 435 1.2.10.2 tls NFSD_LOCK(); 436 1.2.10.2 tls if (newnfs_numnfsd == 0) { 437 1.2.10.2 tls newnfs_numnfsd++; 438 1.2.10.2 tls 439 1.2.10.2 tls NFSD_UNLOCK(); 440 1.2.10.2 tls 441 1.2.10.2 tls /* An empty string implies AUTH_SYS only. */ 442 1.2.10.2 tls if (principal[0] != '\0') { 443 1.2.10.2 tls ret2 = rpc_gss_set_svc_name_call(principal, 444 1.2.10.2 tls "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER2); 445 1.2.10.2 tls ret3 = rpc_gss_set_svc_name_call(principal, 446 1.2.10.2 tls "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER3); 447 1.2.10.2 tls ret4 = rpc_gss_set_svc_name_call(principal, 448 1.2.10.2 tls "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER4); 449 1.2.10.2 tls 450 1.2.10.2 tls if (!ret2 || !ret3 || !ret4) 451 1.2.10.2 tls printf("nfsd: can't register svc name\n"); 452 1.2.10.2 tls } 453 1.2.10.2 tls 454 1.2.10.2 tls nfsrvd_pool->sp_minthreads = args->minthreads; 455 1.2.10.2 tls nfsrvd_pool->sp_maxthreads = args->maxthreads; 456 1.2.10.2 tls 457 1.2.10.2 tls svc_run(nfsrvd_pool); 458 1.2.10.2 tls 459 1.2.10.2 tls if (principal[0] != '\0') { 460 1.2.10.2 tls rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER2); 461 1.2.10.2 tls rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER3); 462 1.2.10.2 tls rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER4); 463 1.2.10.2 tls } 464 1.2.10.2 tls 465 1.2.10.2 tls NFSD_LOCK(); 466 1.2.10.2 tls newnfs_numnfsd--; 467 1.2.10.2 tls nfsrvd_init(1); 468 1.2.10.2 tls } 469 1.2.10.2 tls NFSD_UNLOCK(); 470 1.2.10.2 tls 471 1.2.10.2 tls out: 472 1.2.10.2 tls NFSEXITCODE(error); 473 1.2.10.2 tls return (error); 474 1.2.10.2 tls } 475 1.2.10.2 tls 476 1.2.10.2 tls /* 477 1.2.10.2 tls * Initialize the data structures for the server. 478 1.2.10.2 tls * Handshake with any new nfsds starting up to avoid any chance of 479 1.2.10.2 tls * corruption. 480 1.2.10.2 tls */ 481 1.2.10.2 tls void 482 1.2.10.2 tls nfsrvd_init(int terminating) 483 1.2.10.2 tls { 484 1.2.10.2 tls 485 1.2.10.2 tls NFSD_LOCK_ASSERT(); 486 1.2.10.2 tls 487 1.2.10.2 tls if (terminating) { 488 1.2.10.2 tls nfsd_master_proc = NULL; 489 1.2.10.2 tls NFSD_UNLOCK(); 490 1.2.10.2 tls svcpool_destroy(nfsrvd_pool); 491 1.2.10.2 tls nfsrvd_pool = NULL; 492 1.2.10.2 tls NFSD_LOCK(); 493 1.2.10.2 tls } 494 1.2.10.2 tls 495 1.2.10.2 tls NFSD_UNLOCK(); 496 1.2.10.2 tls 497 1.2.10.2 tls nfsrvd_pool = svcpool_create("nfsd", SYSCTL_STATIC_CHILDREN(_vfs_nfsd)); 498 1.2.10.2 tls nfsrvd_pool->sp_rcache = NULL; 499 1.2.10.2 tls nfsrvd_pool->sp_assign = fhanew_assign; 500 1.2.10.2 tls nfsrvd_pool->sp_done = fha_nd_complete; 501 1.2.10.2 tls 502 1.2.10.2 tls NFSD_LOCK(); 503 1.2.10.2 tls } 504 1.2.10.2 tls 505
Indexes created Wed Oct 01 19:09:53 GMT 2025