1 /*-
2 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
3 * Copyright (c) 2013 Spectra Logic Corporation
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/11.0/sys/fs/nfsserver/nfs_fha_new.c 259765 2013-12-23 08:43:16Z mav $");
29
30 #include <fs/nfs/nfsport.h>
31
32 #include <rpc/rpc.h>
33 #include <nfs/nfs_fha.h>
34 #include <fs/nfs/xdr_subs.h>
35 #include <fs/nfs/nfs.h>
36 #include <fs/nfs/nfsproto.h>
37 #include <fs/nfs/nfsm_subs.h>
38 #include <fs/nfsserver/nfs_fha_new.h>
39
40 static void fhanew_init(void *foo);
41 static void fhanew_uninit(void *foo);
42 rpcproc_t fhanew_get_procnum(rpcproc_t procnum);
43 int fhanew_realign(struct mbuf **mb, int malloc_flags);
44 int fhanew_get_fh(uint64_t *fh, int v3, struct mbuf **md, caddr_t *dpos);
45 int fhanew_is_read(rpcproc_t procnum);
46 int fhanew_is_write(rpcproc_t procnum);
47 int fhanew_get_offset(struct mbuf **md, caddr_t *dpos, int v3,
48 struct fha_info *info);
49 int fhanew_no_offset(rpcproc_t procnum);
50 void fhanew_set_locktype(rpcproc_t procnum, struct fha_info *info);
51 static int fhenew_stats_sysctl(SYSCTL_HANDLER_ARGS);
52
53 static struct fha_params fhanew_softc;
54
55 SYSCTL_DECL(_vfs_nfsd);
56
57 extern int newnfs_nfsv3_procid[];
58 extern SVCPOOL *nfsrvd_pool;
59
60 SYSINIT(nfs_fhanew, SI_SUB_ROOT_CONF, SI_ORDER_ANY, fhanew_init, NULL);
61 SYSUNINIT(nfs_fhanew, SI_SUB_ROOT_CONF, SI_ORDER_ANY, fhanew_uninit, NULL);
62
63 static void
64 fhanew_init(void *foo)
65 {
66 struct fha_params *softc;
67
68 softc = &fhanew_softc;
69
70 bzero(softc, sizeof(*softc));
71
72 /*
73 * Setup the callbacks for this FHA personality.
74 */
75 softc->callbacks.get_procnum = fhanew_get_procnum;
76 softc->callbacks.realign = fhanew_realign;
77 softc->callbacks.get_fh = fhanew_get_fh;
78 softc->callbacks.is_read = fhanew_is_read;
79 softc->callbacks.is_write = fhanew_is_write;
80 softc->callbacks.get_offset = fhanew_get_offset;
81 softc->callbacks.no_offset = fhanew_no_offset;
82 softc->callbacks.set_locktype = fhanew_set_locktype;
83 softc->callbacks.fhe_stats_sysctl = fhenew_stats_sysctl;
84
85 snprintf(softc->server_name, sizeof(softc->server_name),
86 FHANEW_SERVER_NAME);
87
88 softc->pool = &nfsrvd_pool;
89
90 /*
91 * Initialize the sysctl context list for the fha module.
92 */
93 sysctl_ctx_init(&softc->sysctl_ctx);
94 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
95 SYSCTL_STATIC_CHILDREN(_vfs_nfsd), OID_AUTO, "fha", CTLFLAG_RD,
96 0, "fha node");
97 if (softc->sysctl_tree == NULL) {
98 printf("%s: unable to allocate sysctl tree\n", __func__);
99 return;
100 }
101
102 fha_init(softc);
103 }
104
105 static void
106 fhanew_uninit(void *foo)
107 {
108 struct fha_params *softc;
109
110 softc = &fhanew_softc;
111
112 fha_uninit(softc);
113 }
114
115 rpcproc_t
116 fhanew_get_procnum(rpcproc_t procnum)
117 {
118 if (procnum > NFSV2PROC_STATFS)
119 return (-1);
120
121 return (newnfs_nfsv3_procid[procnum]);
122 }
123
124 int
125 fhanew_realign(struct mbuf **mb, int malloc_flags)
126 {
127 return (newnfs_realign(mb, malloc_flags));
128 }
129
130 int
131 fhanew_get_fh(uint64_t *fh, int v3, struct mbuf **md, caddr_t *dpos)
132 {
133 struct nfsrv_descript lnd, *nd;
134 uint32_t *tl;
135 uint8_t *buf;
136 uint64_t t;
137 int error, len, i;
138
139 error = 0;
140 len = 0;
141 nd = &lnd;
142
143 nd->nd_md = *md;
144 nd->nd_dpos = *dpos;
145
146 if (v3) {
147 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, NFSX_UNSIGNED);
148 if ((len = fxdr_unsigned(int, *tl)) <= 0 || len > NFSX_FHMAX) {
149 error = EBADRPC;
150 goto nfsmout;
151 }
152 } else {
153 len = NFSX_V2FH;
154 }
155
156 t = 0;
157 if (len != 0) {
158 NFSM_DISSECT_NONBLOCK(buf, uint8_t *, len);
159 for (i = 0; i < len; i++)
160 t ^= ((uint64_t)buf[i] << (i & 7) * 8);
161 }
162 *fh = t;
163
164 nfsmout:
165 *md = nd->nd_md;
166 *dpos = nd->nd_dpos;
167
168 return (error);
169 }
170
171 int
172 fhanew_is_read(rpcproc_t procnum)
173 {
174 if (procnum == NFSPROC_READ)
175 return (1);
176 else
177 return (0);
178 }
179
180 int
181 fhanew_is_write(rpcproc_t procnum)
182 {
183 if (procnum == NFSPROC_WRITE)
184 return (1);
185 else
186 return (0);
187 }
188
189 int
190 fhanew_get_offset(struct mbuf **md, caddr_t *dpos, int v3,
191 struct fha_info *info)
192 {
193 struct nfsrv_descript lnd, *nd;
194 uint32_t *tl;
195 int error;
196
197 error = 0;
198
199 nd = &lnd;
200 nd->nd_md = *md;
201 nd->nd_dpos = *dpos;
202
203 if (v3) {
204 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, 2 * NFSX_UNSIGNED);
205 info->offset = fxdr_hyper(tl);
206 } else {
207 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, NFSX_UNSIGNED);
208 info->offset = fxdr_unsigned(uint32_t, *tl);
209 }
210
211 nfsmout:
212 *md = nd->nd_md;
213 *dpos = nd->nd_dpos;
214
215 return (error);
216 }
217
218 int
219 fhanew_no_offset(rpcproc_t procnum)
220 {
221 if (procnum == NFSPROC_FSSTAT ||
222 procnum == NFSPROC_FSINFO ||
223 procnum == NFSPROC_PATHCONF ||
224 procnum == NFSPROC_NOOP ||
225 procnum == NFSPROC_NULL)
226 return (1);
227 else
228 return (0);
229 }
230
231 void
232 fhanew_set_locktype(rpcproc_t procnum, struct fha_info *info)
233 {
234 switch (procnum) {
235 case NFSPROC_NULL:
236 case NFSPROC_GETATTR:
237 case NFSPROC_LOOKUP:
238 case NFSPROC_ACCESS:
239 case NFSPROC_READLINK:
240 case NFSPROC_READ:
241 case NFSPROC_READDIR:
242 case NFSPROC_READDIRPLUS:
243 case NFSPROC_WRITE:
244 info->locktype = LK_SHARED;
245 break;
246 case NFSPROC_SETATTR:
247 case NFSPROC_CREATE:
248 case NFSPROC_MKDIR:
249 case NFSPROC_SYMLINK:
250 case NFSPROC_MKNOD:
251 case NFSPROC_REMOVE:
252 case NFSPROC_RMDIR:
253 case NFSPROC_RENAME:
254 case NFSPROC_LINK:
255 case NFSPROC_FSSTAT:
256 case NFSPROC_FSINFO:
257 case NFSPROC_PATHCONF:
258 case NFSPROC_COMMIT:
259 case NFSPROC_NOOP:
260 info->locktype = LK_EXCLUSIVE;
261 break;
262 }
263 }
264
265 static int
266 fhenew_stats_sysctl(SYSCTL_HANDLER_ARGS)
267 {
268 return (fhe_stats_sysctl(oidp, arg1, arg2, req, &fhanew_softc));
269 }
270
271
272 SVCTHREAD *
273 fhanew_assign(SVCTHREAD *this_thread, struct svc_req *req)
274 {
275 return (fha_assign(this_thread, req, &fhanew_softc));
276 }
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