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/10.0/sys/fs/nfsserver/nfs_fha_new.c 249596 2013-04-17 22:42:43Z ken $");
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(fhandle_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(fhandle_t *fh, int v3, struct mbuf **md, caddr_t *dpos)
132 {
133 struct nfsrv_descript lnd, *nd;
134 uint32_t *tl;
135 int error, len;
136
137 error = 0;
138 len = 0;
139 nd = &lnd;
140
141 nd->nd_md = *md;
142 nd->nd_dpos = *dpos;
143
144 if (v3) {
145 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, NFSX_UNSIGNED);
146 if ((len = fxdr_unsigned(int, *tl)) <= 0 || len > NFSX_FHMAX) {
147 error = EBADRPC;
148 goto nfsmout;
149 }
150 } else {
151 len = NFSX_V2FH;
152 }
153
154 if (len != 0) {
155 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, len);
156 bcopy(tl, fh, len);
157 } else
158 bzero(fh, sizeof(*fh));
159
160 nfsmout:
161 *md = nd->nd_md;
162 *dpos = nd->nd_dpos;
163
164 return (error);
165 }
166
167 int
168 fhanew_is_read(rpcproc_t procnum)
169 {
170 if (procnum == NFSPROC_READ)
171 return (1);
172 else
173 return (0);
174 }
175
176 int
177 fhanew_is_write(rpcproc_t procnum)
178 {
179 if (procnum == NFSPROC_WRITE)
180 return (1);
181 else
182 return (0);
183 }
184
185 int
186 fhanew_get_offset(struct mbuf **md, caddr_t *dpos, int v3,
187 struct fha_info *info)
188 {
189 struct nfsrv_descript lnd, *nd;
190 uint32_t *tl;
191 int error;
192
193 error = 0;
194
195 nd = &lnd;
196 nd->nd_md = *md;
197 nd->nd_dpos = *dpos;
198
199 if (v3) {
200 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, 2 * NFSX_UNSIGNED);
201 info->offset = fxdr_hyper(tl);
202 } else {
203 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, NFSX_UNSIGNED);
204 info->offset = fxdr_unsigned(uint32_t, *tl);
205 }
206
207 nfsmout:
208 *md = nd->nd_md;
209 *dpos = nd->nd_dpos;
210
211 return (error);
212 }
213
214 int
215 fhanew_no_offset(rpcproc_t procnum)
216 {
217 if (procnum == NFSPROC_FSSTAT ||
218 procnum == NFSPROC_FSINFO ||
219 procnum == NFSPROC_PATHCONF ||
220 procnum == NFSPROC_NOOP ||
221 procnum == NFSPROC_NULL)
222 return (1);
223 else
224 return (0);
225 }
226
227 void
228 fhanew_set_locktype(rpcproc_t procnum, struct fha_info *info)
229 {
230 switch (procnum) {
231 case NFSPROC_NULL:
232 case NFSPROC_GETATTR:
233 case NFSPROC_LOOKUP:
234 case NFSPROC_ACCESS:
235 case NFSPROC_READLINK:
236 case NFSPROC_READ:
237 case NFSPROC_READDIR:
238 case NFSPROC_READDIRPLUS:
239 case NFSPROC_WRITE:
240 info->locktype = LK_SHARED;
241 break;
242 case NFSPROC_SETATTR:
243 case NFSPROC_CREATE:
244 case NFSPROC_MKDIR:
245 case NFSPROC_SYMLINK:
246 case NFSPROC_MKNOD:
247 case NFSPROC_REMOVE:
248 case NFSPROC_RMDIR:
249 case NFSPROC_RENAME:
250 case NFSPROC_LINK:
251 case NFSPROC_FSSTAT:
252 case NFSPROC_FSINFO:
253 case NFSPROC_PATHCONF:
254 case NFSPROC_COMMIT:
255 case NFSPROC_NOOP:
256 info->locktype = LK_EXCLUSIVE;
257 break;
258 }
259 }
260
261 static int
262 fhenew_stats_sysctl(SYSCTL_HANDLER_ARGS)
263 {
264 return (fhe_stats_sysctl(oidp, arg1, arg2, req, &fhanew_softc));
265 }
266
267
268 SVCTHREAD *
269 fhanew_assign(SVCTHREAD *this_thread, struct svc_req *req)
270 {
271 return (fha_assign(this_thread, req, &fhanew_softc));
272 }
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