1/*-
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 */
33
34#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 */
33
34#include <sys/cdefs.h>
|
35__FBSDID("$FreeBSD: head/sys/fs/nfsserver/nfs_nfsdkrpc.c 281962 2015-04-25 00:58:24Z rmacklem $");
| 35__FBSDID("$FreeBSD: head/sys/fs/nfsserver/nfs_nfsdkrpc.c 283600 2015-05-27 09:20:42Z kib $");
|
36
37#include "opt_inet6.h"
38#include "opt_kgssapi.h"
39
40#include <fs/nfs/nfsport.h>
41
42#include <rpc/rpc.h>
43#include <rpc/rpcsec_gss.h>
44
45#include <nfs/nfs_fha.h>
46#include <fs/nfsserver/nfs_fha_new.h>
47
48#include <security/mac/mac_framework.h>
49
50NFSDLOCKMUTEX;
51NFSV4ROOTLOCKMUTEX;
52struct nfsv4lock nfsd_suspend_lock;
53
54/*
55 * Mapping of old NFS Version 2 RPC numbers to generic numbers.
56 */
57int newnfs_nfsv3_procid[NFS_V3NPROCS] = {
58 NFSPROC_NULL,
59 NFSPROC_GETATTR,
60 NFSPROC_SETATTR,
61 NFSPROC_NOOP,
62 NFSPROC_LOOKUP,
63 NFSPROC_READLINK,
64 NFSPROC_READ,
65 NFSPROC_NOOP,
66 NFSPROC_WRITE,
67 NFSPROC_CREATE,
68 NFSPROC_REMOVE,
69 NFSPROC_RENAME,
70 NFSPROC_LINK,
71 NFSPROC_SYMLINK,
72 NFSPROC_MKDIR,
73 NFSPROC_RMDIR,
74 NFSPROC_READDIR,
75 NFSPROC_FSSTAT,
76 NFSPROC_NOOP,
77 NFSPROC_NOOP,
78 NFSPROC_NOOP,
79 NFSPROC_NOOP,
80};
81
82
83SYSCTL_DECL(_vfs_nfsd);
84
85SVCPOOL *nfsrvd_pool;
86
87static int nfs_privport = 0;
88SYSCTL_INT(_vfs_nfsd, OID_AUTO, nfs_privport, CTLFLAG_RWTUN,
89 &nfs_privport, 0,
90 "Only allow clients using a privileged port for NFSv2 and 3");
91
92static int nfs_minvers = NFS_VER2;
93SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_min_nfsvers, CTLFLAG_RWTUN,
94 &nfs_minvers, 0, "The lowest version of NFS handled by the server");
95
96static int nfs_maxvers = NFS_VER4;
97SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_max_nfsvers, CTLFLAG_RWTUN,
98 &nfs_maxvers, 0, "The highest version of NFS handled by the server");
99
100static int nfs_proc(struct nfsrv_descript *, u_int32_t, SVCXPRT *xprt,
101 struct nfsrvcache **);
102
103extern u_long sb_max_adj;
104extern int newnfs_numnfsd;
105extern struct proc *nfsd_master_proc;
106
107/*
108 * NFS server system calls
109 */
110
111static void
112nfssvc_program(struct svc_req *rqst, SVCXPRT *xprt)
113{
114 struct nfsrv_descript nd;
115 struct nfsrvcache *rp = NULL;
116 int cacherep, credflavor;
117
118 memset(&nd, 0, sizeof(nd));
119 if (rqst->rq_vers == NFS_VER2) {
120 if (rqst->rq_proc > NFSV2PROC_STATFS ||
121 newnfs_nfsv3_procid[rqst->rq_proc] == NFSPROC_NOOP) {
122 svcerr_noproc(rqst);
123 svc_freereq(rqst);
124 goto out;
125 }
126 nd.nd_procnum = newnfs_nfsv3_procid[rqst->rq_proc];
127 nd.nd_flag = ND_NFSV2;
128 } else if (rqst->rq_vers == NFS_VER3) {
129 if (rqst->rq_proc >= NFS_V3NPROCS) {
130 svcerr_noproc(rqst);
131 svc_freereq(rqst);
132 goto out;
133 }
134 nd.nd_procnum = rqst->rq_proc;
135 nd.nd_flag = ND_NFSV3;
136 } else {
137 if (rqst->rq_proc != NFSPROC_NULL &&
138 rqst->rq_proc != NFSV4PROC_COMPOUND) {
139 svcerr_noproc(rqst);
140 svc_freereq(rqst);
141 goto out;
142 }
143 nd.nd_procnum = rqst->rq_proc;
144 nd.nd_flag = ND_NFSV4;
145 }
146
147 /*
148 * Note: we want rq_addr, not svc_getrpccaller for nd_nam2 -
149 * NFS_SRVMAXDATA uses a NULL value for nd_nam2 to detect TCP
150 * mounts.
151 */
152 nd.nd_mrep = rqst->rq_args;
153 rqst->rq_args = NULL;
154 newnfs_realign(&nd.nd_mrep, M_WAITOK);
155 nd.nd_md = nd.nd_mrep;
156 nd.nd_dpos = mtod(nd.nd_md, caddr_t);
157 nd.nd_nam = svc_getrpccaller(rqst);
158 nd.nd_nam2 = rqst->rq_addr;
159 nd.nd_mreq = NULL;
160 nd.nd_cred = NULL;
161
162 if (nfs_privport && (nd.nd_flag & ND_NFSV4) == 0) {
163 /* Check if source port is privileged */
164 u_short port;
165 struct sockaddr *nam = nd.nd_nam;
166 struct sockaddr_in *sin;
167
168 sin = (struct sockaddr_in *)nam;
169 /*
170 * INET/INET6 - same code:
171 * sin_port and sin6_port are at same offset
172 */
173 port = ntohs(sin->sin_port);
174 if (port >= IPPORT_RESERVED &&
175 nd.nd_procnum != NFSPROC_NULL) {
176#ifdef INET6
177 char b6[INET6_ADDRSTRLEN];
178#if defined(KLD_MODULE)
179 /* Do not use ip6_sprintf: the nfs module should work without INET6. */
180#define ip6_sprintf(buf, a) \
181 (sprintf((buf), "%x:%x:%x:%x:%x:%x:%x:%x", \
182 (a)->s6_addr16[0], (a)->s6_addr16[1], \
183 (a)->s6_addr16[2], (a)->s6_addr16[3], \
184 (a)->s6_addr16[4], (a)->s6_addr16[5], \
185 (a)->s6_addr16[6], (a)->s6_addr16[7]), \
186 (buf))
187#endif
188#endif
189 printf("NFS request from unprivileged port (%s:%d)\n",
190#ifdef INET6
191 sin->sin_family == AF_INET6 ?
192 ip6_sprintf(b6, &satosin6(sin)->sin6_addr) :
193#if defined(KLD_MODULE)
194#undef ip6_sprintf
195#endif
196#endif
197 inet_ntoa(sin->sin_addr), port);
198 svcerr_weakauth(rqst);
199 svc_freereq(rqst);
200 m_freem(nd.nd_mrep);
201 goto out;
202 }
203 }
204
205 if (nd.nd_procnum != NFSPROC_NULL) {
206 if (!svc_getcred(rqst, &nd.nd_cred, &credflavor)) {
207 svcerr_weakauth(rqst);
208 svc_freereq(rqst);
209 m_freem(nd.nd_mrep);
210 goto out;
211 }
212
213 /* Set the flag based on credflavor */
214 if (credflavor == RPCSEC_GSS_KRB5) {
215 nd.nd_flag |= ND_GSS;
216 } else if (credflavor == RPCSEC_GSS_KRB5I) {
217 nd.nd_flag |= (ND_GSS | ND_GSSINTEGRITY);
218 } else if (credflavor == RPCSEC_GSS_KRB5P) {
219 nd.nd_flag |= (ND_GSS | ND_GSSPRIVACY);
220 } else if (credflavor != AUTH_SYS) {
221 svcerr_weakauth(rqst);
222 svc_freereq(rqst);
223 m_freem(nd.nd_mrep);
224 goto out;
225 }
226
227#ifdef MAC
228 mac_cred_associate_nfsd(nd.nd_cred);
229#endif
230 /*
231 * Get a refcnt (shared lock) on nfsd_suspend_lock.
232 * NFSSVC_SUSPENDNFSD will take an exclusive lock on
233 * nfsd_suspend_lock to suspend these threads.
234 * This must be done here, before the check of
235 * nfsv4root exports by nfsvno_v4rootexport().
236 */
237 NFSLOCKV4ROOTMUTEX();
238 nfsv4_getref(&nfsd_suspend_lock, NULL, NFSV4ROOTLOCKMUTEXPTR,
239 NULL);
240 NFSUNLOCKV4ROOTMUTEX();
241
242 if ((nd.nd_flag & ND_NFSV4) != 0) {
243 nd.nd_repstat = nfsvno_v4rootexport(&nd);
244 if (nd.nd_repstat != 0) {
245 NFSLOCKV4ROOTMUTEX();
246 nfsv4_relref(&nfsd_suspend_lock);
247 NFSUNLOCKV4ROOTMUTEX();
248 svcerr_weakauth(rqst);
249 svc_freereq(rqst);
250 m_freem(nd.nd_mrep);
251 goto out;
252 }
253 }
254
255 cacherep = nfs_proc(&nd, rqst->rq_xid, xprt, &rp);
256 NFSLOCKV4ROOTMUTEX();
257 nfsv4_relref(&nfsd_suspend_lock);
258 NFSUNLOCKV4ROOTMUTEX();
259 } else {
260 NFSMGET(nd.nd_mreq);
261 nd.nd_mreq->m_len = 0;
262 cacherep = RC_REPLY;
263 }
264 if (nd.nd_mrep != NULL)
265 m_freem(nd.nd_mrep);
266
267 if (nd.nd_cred != NULL)
268 crfree(nd.nd_cred);
269
270 if (cacherep == RC_DROPIT) {
271 if (nd.nd_mreq != NULL)
272 m_freem(nd.nd_mreq);
273 svc_freereq(rqst);
274 goto out;
275 }
276
277 if (nd.nd_mreq == NULL) {
278 svcerr_decode(rqst);
279 svc_freereq(rqst);
280 goto out;
281 }
282
283 if (nd.nd_repstat & NFSERR_AUTHERR) {
284 svcerr_auth(rqst, nd.nd_repstat & ~NFSERR_AUTHERR);
285 if (nd.nd_mreq != NULL)
286 m_freem(nd.nd_mreq);
287 } else if (!svc_sendreply_mbuf(rqst, nd.nd_mreq)) {
288 svcerr_systemerr(rqst);
289 }
290 if (rp != NULL) {
291 nfsrvd_sentcache(rp, (rqst->rq_reply_seq != 0 ||
292 SVC_ACK(xprt, NULL)), rqst->rq_reply_seq);
293 }
294 svc_freereq(rqst);
295
296out:
| 36
37#include "opt_inet6.h"
38#include "opt_kgssapi.h"
39
40#include <fs/nfs/nfsport.h>
41
42#include <rpc/rpc.h>
43#include <rpc/rpcsec_gss.h>
44
45#include <nfs/nfs_fha.h>
46#include <fs/nfsserver/nfs_fha_new.h>
47
48#include <security/mac/mac_framework.h>
49
50NFSDLOCKMUTEX;
51NFSV4ROOTLOCKMUTEX;
52struct nfsv4lock nfsd_suspend_lock;
53
54/*
55 * Mapping of old NFS Version 2 RPC numbers to generic numbers.
56 */
57int newnfs_nfsv3_procid[NFS_V3NPROCS] = {
58 NFSPROC_NULL,
59 NFSPROC_GETATTR,
60 NFSPROC_SETATTR,
61 NFSPROC_NOOP,
62 NFSPROC_LOOKUP,
63 NFSPROC_READLINK,
64 NFSPROC_READ,
65 NFSPROC_NOOP,
66 NFSPROC_WRITE,
67 NFSPROC_CREATE,
68 NFSPROC_REMOVE,
69 NFSPROC_RENAME,
70 NFSPROC_LINK,
71 NFSPROC_SYMLINK,
72 NFSPROC_MKDIR,
73 NFSPROC_RMDIR,
74 NFSPROC_READDIR,
75 NFSPROC_FSSTAT,
76 NFSPROC_NOOP,
77 NFSPROC_NOOP,
78 NFSPROC_NOOP,
79 NFSPROC_NOOP,
80};
81
82
83SYSCTL_DECL(_vfs_nfsd);
84
85SVCPOOL *nfsrvd_pool;
86
87static int nfs_privport = 0;
88SYSCTL_INT(_vfs_nfsd, OID_AUTO, nfs_privport, CTLFLAG_RWTUN,
89 &nfs_privport, 0,
90 "Only allow clients using a privileged port for NFSv2 and 3");
91
92static int nfs_minvers = NFS_VER2;
93SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_min_nfsvers, CTLFLAG_RWTUN,
94 &nfs_minvers, 0, "The lowest version of NFS handled by the server");
95
96static int nfs_maxvers = NFS_VER4;
97SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_max_nfsvers, CTLFLAG_RWTUN,
98 &nfs_maxvers, 0, "The highest version of NFS handled by the server");
99
100static int nfs_proc(struct nfsrv_descript *, u_int32_t, SVCXPRT *xprt,
101 struct nfsrvcache **);
102
103extern u_long sb_max_adj;
104extern int newnfs_numnfsd;
105extern struct proc *nfsd_master_proc;
106
107/*
108 * NFS server system calls
109 */
110
111static void
112nfssvc_program(struct svc_req *rqst, SVCXPRT *xprt)
113{
114 struct nfsrv_descript nd;
115 struct nfsrvcache *rp = NULL;
116 int cacherep, credflavor;
117
118 memset(&nd, 0, sizeof(nd));
119 if (rqst->rq_vers == NFS_VER2) {
120 if (rqst->rq_proc > NFSV2PROC_STATFS ||
121 newnfs_nfsv3_procid[rqst->rq_proc] == NFSPROC_NOOP) {
122 svcerr_noproc(rqst);
123 svc_freereq(rqst);
124 goto out;
125 }
126 nd.nd_procnum = newnfs_nfsv3_procid[rqst->rq_proc];
127 nd.nd_flag = ND_NFSV2;
128 } else if (rqst->rq_vers == NFS_VER3) {
129 if (rqst->rq_proc >= NFS_V3NPROCS) {
130 svcerr_noproc(rqst);
131 svc_freereq(rqst);
132 goto out;
133 }
134 nd.nd_procnum = rqst->rq_proc;
135 nd.nd_flag = ND_NFSV3;
136 } else {
137 if (rqst->rq_proc != NFSPROC_NULL &&
138 rqst->rq_proc != NFSV4PROC_COMPOUND) {
139 svcerr_noproc(rqst);
140 svc_freereq(rqst);
141 goto out;
142 }
143 nd.nd_procnum = rqst->rq_proc;
144 nd.nd_flag = ND_NFSV4;
145 }
146
147 /*
148 * Note: we want rq_addr, not svc_getrpccaller for nd_nam2 -
149 * NFS_SRVMAXDATA uses a NULL value for nd_nam2 to detect TCP
150 * mounts.
151 */
152 nd.nd_mrep = rqst->rq_args;
153 rqst->rq_args = NULL;
154 newnfs_realign(&nd.nd_mrep, M_WAITOK);
155 nd.nd_md = nd.nd_mrep;
156 nd.nd_dpos = mtod(nd.nd_md, caddr_t);
157 nd.nd_nam = svc_getrpccaller(rqst);
158 nd.nd_nam2 = rqst->rq_addr;
159 nd.nd_mreq = NULL;
160 nd.nd_cred = NULL;
161
162 if (nfs_privport && (nd.nd_flag & ND_NFSV4) == 0) {
163 /* Check if source port is privileged */
164 u_short port;
165 struct sockaddr *nam = nd.nd_nam;
166 struct sockaddr_in *sin;
167
168 sin = (struct sockaddr_in *)nam;
169 /*
170 * INET/INET6 - same code:
171 * sin_port and sin6_port are at same offset
172 */
173 port = ntohs(sin->sin_port);
174 if (port >= IPPORT_RESERVED &&
175 nd.nd_procnum != NFSPROC_NULL) {
176#ifdef INET6
177 char b6[INET6_ADDRSTRLEN];
178#if defined(KLD_MODULE)
179 /* Do not use ip6_sprintf: the nfs module should work without INET6. */
180#define ip6_sprintf(buf, a) \
181 (sprintf((buf), "%x:%x:%x:%x:%x:%x:%x:%x", \
182 (a)->s6_addr16[0], (a)->s6_addr16[1], \
183 (a)->s6_addr16[2], (a)->s6_addr16[3], \
184 (a)->s6_addr16[4], (a)->s6_addr16[5], \
185 (a)->s6_addr16[6], (a)->s6_addr16[7]), \
186 (buf))
187#endif
188#endif
189 printf("NFS request from unprivileged port (%s:%d)\n",
190#ifdef INET6
191 sin->sin_family == AF_INET6 ?
192 ip6_sprintf(b6, &satosin6(sin)->sin6_addr) :
193#if defined(KLD_MODULE)
194#undef ip6_sprintf
195#endif
196#endif
197 inet_ntoa(sin->sin_addr), port);
198 svcerr_weakauth(rqst);
199 svc_freereq(rqst);
200 m_freem(nd.nd_mrep);
201 goto out;
202 }
203 }
204
205 if (nd.nd_procnum != NFSPROC_NULL) {
206 if (!svc_getcred(rqst, &nd.nd_cred, &credflavor)) {
207 svcerr_weakauth(rqst);
208 svc_freereq(rqst);
209 m_freem(nd.nd_mrep);
210 goto out;
211 }
212
213 /* Set the flag based on credflavor */
214 if (credflavor == RPCSEC_GSS_KRB5) {
215 nd.nd_flag |= ND_GSS;
216 } else if (credflavor == RPCSEC_GSS_KRB5I) {
217 nd.nd_flag |= (ND_GSS | ND_GSSINTEGRITY);
218 } else if (credflavor == RPCSEC_GSS_KRB5P) {
219 nd.nd_flag |= (ND_GSS | ND_GSSPRIVACY);
220 } else if (credflavor != AUTH_SYS) {
221 svcerr_weakauth(rqst);
222 svc_freereq(rqst);
223 m_freem(nd.nd_mrep);
224 goto out;
225 }
226
227#ifdef MAC
228 mac_cred_associate_nfsd(nd.nd_cred);
229#endif
230 /*
231 * Get a refcnt (shared lock) on nfsd_suspend_lock.
232 * NFSSVC_SUSPENDNFSD will take an exclusive lock on
233 * nfsd_suspend_lock to suspend these threads.
234 * This must be done here, before the check of
235 * nfsv4root exports by nfsvno_v4rootexport().
236 */
237 NFSLOCKV4ROOTMUTEX();
238 nfsv4_getref(&nfsd_suspend_lock, NULL, NFSV4ROOTLOCKMUTEXPTR,
239 NULL);
240 NFSUNLOCKV4ROOTMUTEX();
241
242 if ((nd.nd_flag & ND_NFSV4) != 0) {
243 nd.nd_repstat = nfsvno_v4rootexport(&nd);
244 if (nd.nd_repstat != 0) {
245 NFSLOCKV4ROOTMUTEX();
246 nfsv4_relref(&nfsd_suspend_lock);
247 NFSUNLOCKV4ROOTMUTEX();
248 svcerr_weakauth(rqst);
249 svc_freereq(rqst);
250 m_freem(nd.nd_mrep);
251 goto out;
252 }
253 }
254
255 cacherep = nfs_proc(&nd, rqst->rq_xid, xprt, &rp);
256 NFSLOCKV4ROOTMUTEX();
257 nfsv4_relref(&nfsd_suspend_lock);
258 NFSUNLOCKV4ROOTMUTEX();
259 } else {
260 NFSMGET(nd.nd_mreq);
261 nd.nd_mreq->m_len = 0;
262 cacherep = RC_REPLY;
263 }
264 if (nd.nd_mrep != NULL)
265 m_freem(nd.nd_mrep);
266
267 if (nd.nd_cred != NULL)
268 crfree(nd.nd_cred);
269
270 if (cacherep == RC_DROPIT) {
271 if (nd.nd_mreq != NULL)
272 m_freem(nd.nd_mreq);
273 svc_freereq(rqst);
274 goto out;
275 }
276
277 if (nd.nd_mreq == NULL) {
278 svcerr_decode(rqst);
279 svc_freereq(rqst);
280 goto out;
281 }
282
283 if (nd.nd_repstat & NFSERR_AUTHERR) {
284 svcerr_auth(rqst, nd.nd_repstat & ~NFSERR_AUTHERR);
285 if (nd.nd_mreq != NULL)
286 m_freem(nd.nd_mreq);
287 } else if (!svc_sendreply_mbuf(rqst, nd.nd_mreq)) {
288 svcerr_systemerr(rqst);
289 }
290 if (rp != NULL) {
291 nfsrvd_sentcache(rp, (rqst->rq_reply_seq != 0 ||
292 SVC_ACK(xprt, NULL)), rqst->rq_reply_seq);
293 }
294 svc_freereq(rqst);
295
296out:
|
| 297 if (softdep_ast_cleanup != NULL)
298 softdep_ast_cleanup();
|
297 NFSEXITCODE(0);
298}
299
300/*
301 * Check the cache and, optionally, do the RPC.
302 * Return the appropriate cache response.
303 */
304static int
305nfs_proc(struct nfsrv_descript *nd, u_int32_t xid, SVCXPRT *xprt,
306 struct nfsrvcache **rpp)
307{
308 struct thread *td = curthread;
309 int cacherep = RC_DOIT, isdgram, taglen = -1;
310 struct mbuf *m;
311 u_char tag[NFSV4_SMALLSTR + 1], *tagstr = NULL;
312 u_int32_t minorvers = 0;
313 uint32_t ack;
314
315 *rpp = NULL;
316 if (nd->nd_nam2 == NULL) {
317 nd->nd_flag |= ND_STREAMSOCK;
318 isdgram = 0;
319 } else {
320 isdgram = 1;
321 }
322
323 /*
324 * Two cases:
325 * 1 - For NFSv2 over UDP, if we are near our malloc/mget
326 * limit, just drop the request. There is no
327 * NFSERR_RESOURCE or NFSERR_DELAY for NFSv2 and the
328 * client will timeout/retry over UDP in a little while.
329 * 2 - nd_repstat == 0 && nd_mreq == NULL, which
330 * means a normal nfs rpc, so check the cache
331 */
332 if ((nd->nd_flag & ND_NFSV2) && nd->nd_nam2 != NULL &&
333 nfsrv_mallocmget_limit()) {
334 cacherep = RC_DROPIT;
335 } else {
336 /*
337 * For NFSv3, play it safe and assume that the client is
338 * doing retries on the same TCP connection.
339 */
340 if ((nd->nd_flag & (ND_NFSV4 | ND_STREAMSOCK)) ==
341 ND_STREAMSOCK)
342 nd->nd_flag |= ND_SAMETCPCONN;
343 nd->nd_retxid = xid;
344 nd->nd_tcpconntime = NFSD_MONOSEC;
345 nd->nd_sockref = xprt->xp_sockref;
346 if ((nd->nd_flag & ND_NFSV4) != 0)
347 nfsd_getminorvers(nd, tag, &tagstr, &taglen,
348 &minorvers);
349 if ((nd->nd_flag & ND_NFSV41) != 0)
350 /* NFSv4.1 caches replies in the session slots. */
351 cacherep = RC_DOIT;
352 else {
353 cacherep = nfsrvd_getcache(nd);
354 ack = 0;
355 SVC_ACK(xprt, &ack);
356 nfsrc_trimcache(xprt->xp_sockref, ack, 0);
357 }
358 }
359
360 /*
361 * Handle the request. There are three cases.
362 * RC_DOIT - do the RPC
363 * RC_REPLY - return the reply already created
364 * RC_DROPIT - just throw the request away
365 */
366 if (cacherep == RC_DOIT) {
367 if ((nd->nd_flag & ND_NFSV41) != 0)
368 nd->nd_xprt = xprt;
369 nfsrvd_dorpc(nd, isdgram, tagstr, taglen, minorvers, td);
370 if ((nd->nd_flag & ND_NFSV41) != 0) {
371 if (nd->nd_repstat != NFSERR_REPLYFROMCACHE &&
372 (nd->nd_flag & ND_SAVEREPLY) != 0) {
373 /* Cache a copy of the reply. */
374 m = m_copym(nd->nd_mreq, 0, M_COPYALL,
375 M_WAITOK);
376 } else
377 m = NULL;
378 if ((nd->nd_flag & ND_HASSEQUENCE) != 0)
379 nfsrv_cache_session(nd->nd_sessionid,
380 nd->nd_slotid, nd->nd_repstat, &m);
381 if (nd->nd_repstat == NFSERR_REPLYFROMCACHE)
382 nd->nd_repstat = 0;
383 cacherep = RC_REPLY;
384 } else {
385 if (nd->nd_repstat == NFSERR_DONTREPLY)
386 cacherep = RC_DROPIT;
387 else
388 cacherep = RC_REPLY;
389 *rpp = nfsrvd_updatecache(nd);
390 }
391 }
392 if (tagstr != NULL && taglen > NFSV4_SMALLSTR)
393 free(tagstr, M_TEMP);
394
395 NFSEXITCODE2(0, nd);
396 return (cacherep);
397}
398
399static void
400nfssvc_loss(SVCXPRT *xprt)
401{
402 uint32_t ack;
403
404 ack = 0;
405 SVC_ACK(xprt, &ack);
406 nfsrc_trimcache(xprt->xp_sockref, ack, 1);
407}
408
409/*
410 * Adds a socket to the list for servicing by nfsds.
411 */
412int
413nfsrvd_addsock(struct file *fp)
414{
415 int siz;
416 struct socket *so;
417 int error = 0;
418 SVCXPRT *xprt;
419 static u_int64_t sockref = 0;
420
421 so = fp->f_data;
422
423 siz = sb_max_adj;
424 error = soreserve(so, siz, siz);
425 if (error)
426 goto out;
427
428 /*
429 * Steal the socket from userland so that it doesn't close
430 * unexpectedly.
431 */
432 if (so->so_type == SOCK_DGRAM)
433 xprt = svc_dg_create(nfsrvd_pool, so, 0, 0);
434 else
435 xprt = svc_vc_create(nfsrvd_pool, so, 0, 0);
436 if (xprt) {
437 fp->f_ops = &badfileops;
438 fp->f_data = NULL;
439 xprt->xp_sockref = ++sockref;
440 if (nfs_minvers == NFS_VER2)
441 svc_reg(xprt, NFS_PROG, NFS_VER2, nfssvc_program,
442 NULL);
443 if (nfs_minvers <= NFS_VER3 && nfs_maxvers >= NFS_VER3)
444 svc_reg(xprt, NFS_PROG, NFS_VER3, nfssvc_program,
445 NULL);
446 if (nfs_maxvers >= NFS_VER4)
447 svc_reg(xprt, NFS_PROG, NFS_VER4, nfssvc_program,
448 NULL);
449 if (so->so_type == SOCK_STREAM)
450 svc_loss_reg(xprt, nfssvc_loss);
451 SVC_RELEASE(xprt);
452 }
453
454out:
455 NFSEXITCODE(error);
456 return (error);
457}
458
459/*
460 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests
461 * until it is killed by a signal.
462 */
463int
464nfsrvd_nfsd(struct thread *td, struct nfsd_nfsd_args *args)
465{
466 char principal[MAXHOSTNAMELEN + 5];
| 299 NFSEXITCODE(0);
300}
301
302/*
303 * Check the cache and, optionally, do the RPC.
304 * Return the appropriate cache response.
305 */
306static int
307nfs_proc(struct nfsrv_descript *nd, u_int32_t xid, SVCXPRT *xprt,
308 struct nfsrvcache **rpp)
309{
310 struct thread *td = curthread;
311 int cacherep = RC_DOIT, isdgram, taglen = -1;
312 struct mbuf *m;
313 u_char tag[NFSV4_SMALLSTR + 1], *tagstr = NULL;
314 u_int32_t minorvers = 0;
315 uint32_t ack;
316
317 *rpp = NULL;
318 if (nd->nd_nam2 == NULL) {
319 nd->nd_flag |= ND_STREAMSOCK;
320 isdgram = 0;
321 } else {
322 isdgram = 1;
323 }
324
325 /*
326 * Two cases:
327 * 1 - For NFSv2 over UDP, if we are near our malloc/mget
328 * limit, just drop the request. There is no
329 * NFSERR_RESOURCE or NFSERR_DELAY for NFSv2 and the
330 * client will timeout/retry over UDP in a little while.
331 * 2 - nd_repstat == 0 && nd_mreq == NULL, which
332 * means a normal nfs rpc, so check the cache
333 */
334 if ((nd->nd_flag & ND_NFSV2) && nd->nd_nam2 != NULL &&
335 nfsrv_mallocmget_limit()) {
336 cacherep = RC_DROPIT;
337 } else {
338 /*
339 * For NFSv3, play it safe and assume that the client is
340 * doing retries on the same TCP connection.
341 */
342 if ((nd->nd_flag & (ND_NFSV4 | ND_STREAMSOCK)) ==
343 ND_STREAMSOCK)
344 nd->nd_flag |= ND_SAMETCPCONN;
345 nd->nd_retxid = xid;
346 nd->nd_tcpconntime = NFSD_MONOSEC;
347 nd->nd_sockref = xprt->xp_sockref;
348 if ((nd->nd_flag & ND_NFSV4) != 0)
349 nfsd_getminorvers(nd, tag, &tagstr, &taglen,
350 &minorvers);
351 if ((nd->nd_flag & ND_NFSV41) != 0)
352 /* NFSv4.1 caches replies in the session slots. */
353 cacherep = RC_DOIT;
354 else {
355 cacherep = nfsrvd_getcache(nd);
356 ack = 0;
357 SVC_ACK(xprt, &ack);
358 nfsrc_trimcache(xprt->xp_sockref, ack, 0);
359 }
360 }
361
362 /*
363 * Handle the request. There are three cases.
364 * RC_DOIT - do the RPC
365 * RC_REPLY - return the reply already created
366 * RC_DROPIT - just throw the request away
367 */
368 if (cacherep == RC_DOIT) {
369 if ((nd->nd_flag & ND_NFSV41) != 0)
370 nd->nd_xprt = xprt;
371 nfsrvd_dorpc(nd, isdgram, tagstr, taglen, minorvers, td);
372 if ((nd->nd_flag & ND_NFSV41) != 0) {
373 if (nd->nd_repstat != NFSERR_REPLYFROMCACHE &&
374 (nd->nd_flag & ND_SAVEREPLY) != 0) {
375 /* Cache a copy of the reply. */
376 m = m_copym(nd->nd_mreq, 0, M_COPYALL,
377 M_WAITOK);
378 } else
379 m = NULL;
380 if ((nd->nd_flag & ND_HASSEQUENCE) != 0)
381 nfsrv_cache_session(nd->nd_sessionid,
382 nd->nd_slotid, nd->nd_repstat, &m);
383 if (nd->nd_repstat == NFSERR_REPLYFROMCACHE)
384 nd->nd_repstat = 0;
385 cacherep = RC_REPLY;
386 } else {
387 if (nd->nd_repstat == NFSERR_DONTREPLY)
388 cacherep = RC_DROPIT;
389 else
390 cacherep = RC_REPLY;
391 *rpp = nfsrvd_updatecache(nd);
392 }
393 }
394 if (tagstr != NULL && taglen > NFSV4_SMALLSTR)
395 free(tagstr, M_TEMP);
396
397 NFSEXITCODE2(0, nd);
398 return (cacherep);
399}
400
401static void
402nfssvc_loss(SVCXPRT *xprt)
403{
404 uint32_t ack;
405
406 ack = 0;
407 SVC_ACK(xprt, &ack);
408 nfsrc_trimcache(xprt->xp_sockref, ack, 1);
409}
410
411/*
412 * Adds a socket to the list for servicing by nfsds.
413 */
414int
415nfsrvd_addsock(struct file *fp)
416{
417 int siz;
418 struct socket *so;
419 int error = 0;
420 SVCXPRT *xprt;
421 static u_int64_t sockref = 0;
422
423 so = fp->f_data;
424
425 siz = sb_max_adj;
426 error = soreserve(so, siz, siz);
427 if (error)
428 goto out;
429
430 /*
431 * Steal the socket from userland so that it doesn't close
432 * unexpectedly.
433 */
434 if (so->so_type == SOCK_DGRAM)
435 xprt = svc_dg_create(nfsrvd_pool, so, 0, 0);
436 else
437 xprt = svc_vc_create(nfsrvd_pool, so, 0, 0);
438 if (xprt) {
439 fp->f_ops = &badfileops;
440 fp->f_data = NULL;
441 xprt->xp_sockref = ++sockref;
442 if (nfs_minvers == NFS_VER2)
443 svc_reg(xprt, NFS_PROG, NFS_VER2, nfssvc_program,
444 NULL);
445 if (nfs_minvers <= NFS_VER3 && nfs_maxvers >= NFS_VER3)
446 svc_reg(xprt, NFS_PROG, NFS_VER3, nfssvc_program,
447 NULL);
448 if (nfs_maxvers >= NFS_VER4)
449 svc_reg(xprt, NFS_PROG, NFS_VER4, nfssvc_program,
450 NULL);
451 if (so->so_type == SOCK_STREAM)
452 svc_loss_reg(xprt, nfssvc_loss);
453 SVC_RELEASE(xprt);
454 }
455
456out:
457 NFSEXITCODE(error);
458 return (error);
459}
460
461/*
462 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests
463 * until it is killed by a signal.
464 */
465int
466nfsrvd_nfsd(struct thread *td, struct nfsd_nfsd_args *args)
467{
468 char principal[MAXHOSTNAMELEN + 5];
|
| 469 struct proc *p;
|
467 int error = 0;
468 bool_t ret2, ret3, ret4;
469
470 error = copyinstr(args->principal, principal, sizeof (principal),
471 NULL);
472 if (error)
473 goto out;
474
475 /*
476 * Only the first nfsd actually does any work. The RPC code
477 * adds threads to it as needed. Any extra processes offered
478 * by nfsd just exit. If nfsd is new enough, it will call us
479 * once with a structure that specifies how many threads to
480 * use.
481 */
482 NFSD_LOCK();
483 if (newnfs_numnfsd == 0) {
| 470 int error = 0;
471 bool_t ret2, ret3, ret4;
472
473 error = copyinstr(args->principal, principal, sizeof (principal),
474 NULL);
475 if (error)
476 goto out;
477
478 /*
479 * Only the first nfsd actually does any work. The RPC code
480 * adds threads to it as needed. Any extra processes offered
481 * by nfsd just exit. If nfsd is new enough, it will call us
482 * once with a structure that specifies how many threads to
483 * use.
484 */
485 NFSD_LOCK();
486 if (newnfs_numnfsd == 0) {
|
| 487 p = td->td_proc;
488 PROC_LOCK(p);
489 p->p_flag2 |= P2_AST_SU;
490 PROC_UNLOCK(p);
|
484 newnfs_numnfsd++;
485
486 NFSD_UNLOCK();
487
488 /* An empty string implies AUTH_SYS only. */
489 if (principal[0] != '\0') {
490 ret2 = rpc_gss_set_svc_name_call(principal,
491 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER2);
492 ret3 = rpc_gss_set_svc_name_call(principal,
493 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER3);
494 ret4 = rpc_gss_set_svc_name_call(principal,
495 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER4);
496
497 if (!ret2 || !ret3 || !ret4)
498 printf("nfsd: can't register svc name\n");
499 }
500
501 nfsrvd_pool->sp_minthreads = args->minthreads;
502 nfsrvd_pool->sp_maxthreads = args->maxthreads;
503
504 svc_run(nfsrvd_pool);
505
506 if (principal[0] != '\0') {
507 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER2);
508 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER3);
509 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER4);
510 }
511
512 NFSD_LOCK();
513 newnfs_numnfsd--;
514 nfsrvd_init(1);
| 491 newnfs_numnfsd++;
492
493 NFSD_UNLOCK();
494
495 /* An empty string implies AUTH_SYS only. */
496 if (principal[0] != '\0') {
497 ret2 = rpc_gss_set_svc_name_call(principal,
498 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER2);
499 ret3 = rpc_gss_set_svc_name_call(principal,
500 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER3);
501 ret4 = rpc_gss_set_svc_name_call(principal,
502 "kerberosv5", GSS_C_INDEFINITE, NFS_PROG, NFS_VER4);
503
504 if (!ret2 || !ret3 || !ret4)
505 printf("nfsd: can't register svc name\n");
506 }
507
508 nfsrvd_pool->sp_minthreads = args->minthreads;
509 nfsrvd_pool->sp_maxthreads = args->maxthreads;
510
511 svc_run(nfsrvd_pool);
512
513 if (principal[0] != '\0') {
514 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER2);
515 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER3);
516 rpc_gss_clear_svc_name_call(NFS_PROG, NFS_VER4);
517 }
518
519 NFSD_LOCK();
520 newnfs_numnfsd--;
521 nfsrvd_init(1);
|
| 522 PROC_LOCK(p);
523 p->p_flag2 &= ~P2_AST_SU;
524 PROC_UNLOCK(p);
|
515 }
516 NFSD_UNLOCK();
517
518out:
519 NFSEXITCODE(error);
520 return (error);
521}
522
523/*
524 * Initialize the data structures for the server.
525 * Handshake with any new nfsds starting up to avoid any chance of
526 * corruption.
527 */
528void
529nfsrvd_init(int terminating)
530{
531
532 NFSD_LOCK_ASSERT();
533
534 if (terminating) {
535 nfsd_master_proc = NULL;
536 NFSD_UNLOCK();
537 svcpool_destroy(nfsrvd_pool);
538 nfsrvd_pool = NULL;
539 NFSD_LOCK();
540 }
541
542 NFSD_UNLOCK();
543
544 nfsrvd_pool = svcpool_create("nfsd", SYSCTL_STATIC_CHILDREN(_vfs_nfsd));
545 nfsrvd_pool->sp_rcache = NULL;
546 nfsrvd_pool->sp_assign = fhanew_assign;
547 nfsrvd_pool->sp_done = fha_nd_complete;
548
549 NFSD_LOCK();
550}
551
| 525 }
526 NFSD_UNLOCK();
527
528out:
529 NFSEXITCODE(error);
530 return (error);
531}
532
533/*
534 * Initialize the data structures for the server.
535 * Handshake with any new nfsds starting up to avoid any chance of
536 * corruption.
537 */
538void
539nfsrvd_init(int terminating)
540{
541
542 NFSD_LOCK_ASSERT();
543
544 if (terminating) {
545 nfsd_master_proc = NULL;
546 NFSD_UNLOCK();
547 svcpool_destroy(nfsrvd_pool);
548 nfsrvd_pool = NULL;
549 NFSD_LOCK();
550 }
551
552 NFSD_UNLOCK();
553
554 nfsrvd_pool = svcpool_create("nfsd", SYSCTL_STATIC_CHILDREN(_vfs_nfsd));
555 nfsrvd_pool->sp_rcache = NULL;
556 nfsrvd_pool->sp_assign = fhanew_assign;
557 nfsrvd_pool->sp_done = fha_nd_complete;
558
559 NFSD_LOCK();
560}
561
|