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Commit 8ff30fa4eff2ff9e207961c654caa093f0c84873

Authored by NeilBrown
Committed by J. Bruce Fields
1 parent 1ebede86b8
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

nfsd: disable deferral for NFSv4 

Now that a slight delay in getting a reply to an upcall doesn't
require deferring of requests, request deferral for all NFSv4
requests - the concept doesn't really fit with the v4 model.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Showing 1 changed file with 5 additions and 2 deletions Inline Diff

1 /* 1 /*
2 * Server-side procedures for NFSv4. 2 * Server-side procedures for NFSv4.
3 * 3 *
4 * Copyright (c) 2002 The Regents of the University of Michigan. 4 * Copyright (c) 2002 The Regents of the University of Michigan.
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Kendrick Smith <kmsmith@umich.edu> 7 * Kendrick Smith <kmsmith@umich.edu>
8 * Andy Adamson <andros@umich.edu> 8 * Andy Adamson <andros@umich.edu>
9 * 9 *
10 * Redistribution and use in source and binary forms, with or without 10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions 11 * modification, are permitted provided that the following conditions
12 * are met: 12 * are met:
13 * 13 *
14 * 1. Redistributions of source code must retain the above copyright 14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer. 15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright 16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the 17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution. 18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its 19 * 3. Neither the name of the University nor the names of its
20 * contributors may be used to endorse or promote products derived 20 * contributors may be used to endorse or promote products derived
21 * from this software without specific prior written permission. 21 * from this software without specific prior written permission.
22 * 22 *
23 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 23 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */ 34 */
35 #include <linux/file.h> 35 #include <linux/file.h>
36 #include <linux/slab.h> 36 #include <linux/slab.h>
37 37
38 #include "cache.h" 38 #include "cache.h"
39 #include "xdr4.h" 39 #include "xdr4.h"
40 #include "vfs.h" 40 #include "vfs.h"
41 41
42 #define NFSDDBG_FACILITY NFSDDBG_PROC 42 #define NFSDDBG_FACILITY NFSDDBG_PROC
43 43
44 static u32 nfsd_attrmask[] = { 44 static u32 nfsd_attrmask[] = {
45 NFSD_WRITEABLE_ATTRS_WORD0, 45 NFSD_WRITEABLE_ATTRS_WORD0,
46 NFSD_WRITEABLE_ATTRS_WORD1, 46 NFSD_WRITEABLE_ATTRS_WORD1,
47 NFSD_WRITEABLE_ATTRS_WORD2 47 NFSD_WRITEABLE_ATTRS_WORD2
48 }; 48 };
49 49
50 static u32 nfsd41_ex_attrmask[] = { 50 static u32 nfsd41_ex_attrmask[] = {
51 NFSD_SUPPATTR_EXCLCREAT_WORD0, 51 NFSD_SUPPATTR_EXCLCREAT_WORD0,
52 NFSD_SUPPATTR_EXCLCREAT_WORD1, 52 NFSD_SUPPATTR_EXCLCREAT_WORD1,
53 NFSD_SUPPATTR_EXCLCREAT_WORD2 53 NFSD_SUPPATTR_EXCLCREAT_WORD2
54 }; 54 };
55 55
56 static __be32 56 static __be32
57 check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 57 check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
58 u32 *bmval, u32 *writable) 58 u32 *bmval, u32 *writable)
59 { 59 {
60 struct dentry *dentry = cstate->current_fh.fh_dentry; 60 struct dentry *dentry = cstate->current_fh.fh_dentry;
61 61
62 /* 62 /*
63 * Check about attributes are supported by the NFSv4 server or not. 63 * Check about attributes are supported by the NFSv4 server or not.
64 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP. 64 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
65 */ 65 */
66 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) || 66 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
67 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) || 67 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
68 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion))) 68 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
69 return nfserr_attrnotsupp; 69 return nfserr_attrnotsupp;
70 70
71 /* 71 /*
72 * Check FATTR4_WORD0_ACL can be supported 72 * Check FATTR4_WORD0_ACL can be supported
73 * in current environment or not. 73 * in current environment or not.
74 */ 74 */
75 if (bmval[0] & FATTR4_WORD0_ACL) { 75 if (bmval[0] & FATTR4_WORD0_ACL) {
76 if (!IS_POSIXACL(dentry->d_inode)) 76 if (!IS_POSIXACL(dentry->d_inode))
77 return nfserr_attrnotsupp; 77 return nfserr_attrnotsupp;
78 } 78 }
79 79
80 /* 80 /*
81 * According to spec, read-only attributes return ERR_INVAL. 81 * According to spec, read-only attributes return ERR_INVAL.
82 */ 82 */
83 if (writable) { 83 if (writable) {
84 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) || 84 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
85 (bmval[2] & ~writable[2])) 85 (bmval[2] & ~writable[2]))
86 return nfserr_inval; 86 return nfserr_inval;
87 } 87 }
88 88
89 return nfs_ok; 89 return nfs_ok;
90 } 90 }
91 91
92 static __be32 92 static __be32
93 nfsd4_check_open_attributes(struct svc_rqst *rqstp, 93 nfsd4_check_open_attributes(struct svc_rqst *rqstp,
94 struct nfsd4_compound_state *cstate, struct nfsd4_open *open) 94 struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
95 { 95 {
96 __be32 status = nfs_ok; 96 __be32 status = nfs_ok;
97 97
98 if (open->op_create == NFS4_OPEN_CREATE) { 98 if (open->op_create == NFS4_OPEN_CREATE) {
99 if (open->op_createmode == NFS4_CREATE_UNCHECKED 99 if (open->op_createmode == NFS4_CREATE_UNCHECKED
100 || open->op_createmode == NFS4_CREATE_GUARDED) 100 || open->op_createmode == NFS4_CREATE_GUARDED)
101 status = check_attr_support(rqstp, cstate, 101 status = check_attr_support(rqstp, cstate,
102 open->op_bmval, nfsd_attrmask); 102 open->op_bmval, nfsd_attrmask);
103 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1) 103 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
104 status = check_attr_support(rqstp, cstate, 104 status = check_attr_support(rqstp, cstate,
105 open->op_bmval, nfsd41_ex_attrmask); 105 open->op_bmval, nfsd41_ex_attrmask);
106 } 106 }
107 107
108 return status; 108 return status;
109 } 109 }
110 110
111 static int 111 static int
112 is_create_with_attrs(struct nfsd4_open *open) 112 is_create_with_attrs(struct nfsd4_open *open)
113 { 113 {
114 return open->op_create == NFS4_OPEN_CREATE 114 return open->op_create == NFS4_OPEN_CREATE
115 && (open->op_createmode == NFS4_CREATE_UNCHECKED 115 && (open->op_createmode == NFS4_CREATE_UNCHECKED
116 || open->op_createmode == NFS4_CREATE_GUARDED 116 || open->op_createmode == NFS4_CREATE_GUARDED
117 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1); 117 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
118 } 118 }
119 119
120 /* 120 /*
121 * if error occurs when setting the acl, just clear the acl bit 121 * if error occurs when setting the acl, just clear the acl bit
122 * in the returned attr bitmap. 122 * in the returned attr bitmap.
123 */ 123 */
124 static void 124 static void
125 do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, 125 do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
126 struct nfs4_acl *acl, u32 *bmval) 126 struct nfs4_acl *acl, u32 *bmval)
127 { 127 {
128 __be32 status; 128 __be32 status;
129 129
130 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl); 130 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
131 if (status) 131 if (status)
132 /* 132 /*
133 * We should probably fail the whole open at this point, 133 * We should probably fail the whole open at this point,
134 * but we've already created the file, so it's too late; 134 * but we've already created the file, so it's too late;
135 * So this seems the least of evils: 135 * So this seems the least of evils:
136 */ 136 */
137 bmval[0] &= ~FATTR4_WORD0_ACL; 137 bmval[0] &= ~FATTR4_WORD0_ACL;
138 } 138 }
139 139
140 static inline void 140 static inline void
141 fh_dup2(struct svc_fh *dst, struct svc_fh *src) 141 fh_dup2(struct svc_fh *dst, struct svc_fh *src)
142 { 142 {
143 fh_put(dst); 143 fh_put(dst);
144 dget(src->fh_dentry); 144 dget(src->fh_dentry);
145 if (src->fh_export) 145 if (src->fh_export)
146 cache_get(&src->fh_export->h); 146 cache_get(&src->fh_export->h);
147 *dst = *src; 147 *dst = *src;
148 } 148 }
149 149
150 static __be32 150 static __be32
151 do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode) 151 do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
152 { 152 {
153 __be32 status; 153 __be32 status;
154 154
155 if (open->op_truncate && 155 if (open->op_truncate &&
156 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) 156 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
157 return nfserr_inval; 157 return nfserr_inval;
158 158
159 if (open->op_share_access & NFS4_SHARE_ACCESS_READ) 159 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
160 accmode |= NFSD_MAY_READ; 160 accmode |= NFSD_MAY_READ;
161 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) 161 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
162 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); 162 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
163 if (open->op_share_deny & NFS4_SHARE_DENY_READ) 163 if (open->op_share_deny & NFS4_SHARE_DENY_READ)
164 accmode |= NFSD_MAY_WRITE; 164 accmode |= NFSD_MAY_WRITE;
165 165
166 status = fh_verify(rqstp, current_fh, S_IFREG, accmode); 166 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
167 167
168 return status; 168 return status;
169 } 169 }
170 170
171 static __be32 171 static __be32
172 do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) 172 do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
173 { 173 {
174 struct svc_fh resfh; 174 struct svc_fh resfh;
175 __be32 status; 175 __be32 status;
176 int created = 0; 176 int created = 0;
177 177
178 fh_init(&resfh, NFS4_FHSIZE); 178 fh_init(&resfh, NFS4_FHSIZE);
179 open->op_truncate = 0; 179 open->op_truncate = 0;
180 180
181 if (open->op_create) { 181 if (open->op_create) {
182 /* FIXME: check session persistence and pnfs flags. 182 /* FIXME: check session persistence and pnfs flags.
183 * The nfsv4.1 spec requires the following semantics: 183 * The nfsv4.1 spec requires the following semantics:
184 * 184 *
185 * Persistent | pNFS | Server REQUIRED | Client Allowed 185 * Persistent | pNFS | Server REQUIRED | Client Allowed
186 * Reply Cache | server | | 186 * Reply Cache | server | |
187 * -------------+--------+-----------------+-------------------- 187 * -------------+--------+-----------------+--------------------
188 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1 188 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
189 * | | | (SHOULD) 189 * | | | (SHOULD)
190 * | | and EXCLUSIVE4 | or EXCLUSIVE4 190 * | | and EXCLUSIVE4 | or EXCLUSIVE4
191 * | | | (SHOULD NOT) 191 * | | | (SHOULD NOT)
192 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1 192 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
193 * yes | no | GUARDED4 | GUARDED4 193 * yes | no | GUARDED4 | GUARDED4
194 * yes | yes | GUARDED4 | GUARDED4 194 * yes | yes | GUARDED4 | GUARDED4
195 */ 195 */
196 196
197 /* 197 /*
198 * Note: create modes (UNCHECKED,GUARDED...) are the same 198 * Note: create modes (UNCHECKED,GUARDED...) are the same
199 * in NFSv4 as in v3. 199 * in NFSv4 as in v3.
200 */ 200 */
201 status = nfsd_create_v3(rqstp, current_fh, open->op_fname.data, 201 status = nfsd_create_v3(rqstp, current_fh, open->op_fname.data,
202 open->op_fname.len, &open->op_iattr, 202 open->op_fname.len, &open->op_iattr,
203 &resfh, open->op_createmode, 203 &resfh, open->op_createmode,
204 (u32 *)open->op_verf.data, 204 (u32 *)open->op_verf.data,
205 &open->op_truncate, &created); 205 &open->op_truncate, &created);
206 206
207 /* 207 /*
208 * Following rfc 3530 14.2.16, use the returned bitmask 208 * Following rfc 3530 14.2.16, use the returned bitmask
209 * to indicate which attributes we used to store the 209 * to indicate which attributes we used to store the
210 * verifier: 210 * verifier:
211 */ 211 */
212 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) 212 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
213 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS | 213 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
214 FATTR4_WORD1_TIME_MODIFY); 214 FATTR4_WORD1_TIME_MODIFY);
215 } else { 215 } else {
216 status = nfsd_lookup(rqstp, current_fh, 216 status = nfsd_lookup(rqstp, current_fh,
217 open->op_fname.data, open->op_fname.len, &resfh); 217 open->op_fname.data, open->op_fname.len, &resfh);
218 fh_unlock(current_fh); 218 fh_unlock(current_fh);
219 } 219 }
220 if (status) 220 if (status)
221 goto out; 221 goto out;
222 222
223 if (is_create_with_attrs(open) && open->op_acl != NULL) 223 if (is_create_with_attrs(open) && open->op_acl != NULL)
224 do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval); 224 do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval);
225 225
226 set_change_info(&open->op_cinfo, current_fh); 226 set_change_info(&open->op_cinfo, current_fh);
227 fh_dup2(current_fh, &resfh); 227 fh_dup2(current_fh, &resfh);
228 228
229 /* set reply cache */ 229 /* set reply cache */
230 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh, 230 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
231 &resfh.fh_handle); 231 &resfh.fh_handle);
232 if (!created) 232 if (!created)
233 status = do_open_permission(rqstp, current_fh, open, 233 status = do_open_permission(rqstp, current_fh, open,
234 NFSD_MAY_NOP); 234 NFSD_MAY_NOP);
235 235
236 out: 236 out:
237 fh_put(&resfh); 237 fh_put(&resfh);
238 return status; 238 return status;
239 } 239 }
240 240
241 static __be32 241 static __be32
242 do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) 242 do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
243 { 243 {
244 __be32 status; 244 __be32 status;
245 245
246 /* Only reclaims from previously confirmed clients are valid */ 246 /* Only reclaims from previously confirmed clients are valid */
247 if ((status = nfs4_check_open_reclaim(&open->op_clientid))) 247 if ((status = nfs4_check_open_reclaim(&open->op_clientid)))
248 return status; 248 return status;
249 249
250 /* We don't know the target directory, and therefore can not 250 /* We don't know the target directory, and therefore can not
251 * set the change info 251 * set the change info
252 */ 252 */
253 253
254 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); 254 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
255 255
256 /* set replay cache */ 256 /* set replay cache */
257 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh, 257 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
258 &current_fh->fh_handle); 258 &current_fh->fh_handle);
259 259
260 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && 260 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
261 (open->op_iattr.ia_size == 0); 261 (open->op_iattr.ia_size == 0);
262 262
263 status = do_open_permission(rqstp, current_fh, open, 263 status = do_open_permission(rqstp, current_fh, open,
264 NFSD_MAY_OWNER_OVERRIDE); 264 NFSD_MAY_OWNER_OVERRIDE);
265 265
266 return status; 266 return status;
267 } 267 }
268 268
269 static void 269 static void
270 copy_clientid(clientid_t *clid, struct nfsd4_session *session) 270 copy_clientid(clientid_t *clid, struct nfsd4_session *session)
271 { 271 {
272 struct nfsd4_sessionid *sid = 272 struct nfsd4_sessionid *sid =
273 (struct nfsd4_sessionid *)session->se_sessionid.data; 273 (struct nfsd4_sessionid *)session->se_sessionid.data;
274 274
275 clid->cl_boot = sid->clientid.cl_boot; 275 clid->cl_boot = sid->clientid.cl_boot;
276 clid->cl_id = sid->clientid.cl_id; 276 clid->cl_id = sid->clientid.cl_id;
277 } 277 }
278 278
279 static __be32 279 static __be32
280 nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 280 nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
281 struct nfsd4_open *open) 281 struct nfsd4_open *open)
282 { 282 {
283 __be32 status; 283 __be32 status;
284 struct nfsd4_compoundres *resp; 284 struct nfsd4_compoundres *resp;
285 285
286 dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n", 286 dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
287 (int)open->op_fname.len, open->op_fname.data, 287 (int)open->op_fname.len, open->op_fname.data,
288 open->op_stateowner); 288 open->op_stateowner);
289 289
290 /* This check required by spec. */ 290 /* This check required by spec. */
291 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) 291 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
292 return nfserr_inval; 292 return nfserr_inval;
293 293
294 if (nfsd4_has_session(cstate)) 294 if (nfsd4_has_session(cstate))
295 copy_clientid(&open->op_clientid, cstate->session); 295 copy_clientid(&open->op_clientid, cstate->session);
296 296
297 nfs4_lock_state(); 297 nfs4_lock_state();
298 298
299 /* check seqid for replay. set nfs4_owner */ 299 /* check seqid for replay. set nfs4_owner */
300 resp = rqstp->rq_resp; 300 resp = rqstp->rq_resp;
301 status = nfsd4_process_open1(&resp->cstate, open); 301 status = nfsd4_process_open1(&resp->cstate, open);
302 if (status == nfserr_replay_me) { 302 if (status == nfserr_replay_me) {
303 struct nfs4_replay *rp = &open->op_stateowner->so_replay; 303 struct nfs4_replay *rp = &open->op_stateowner->so_replay;
304 fh_put(&cstate->current_fh); 304 fh_put(&cstate->current_fh);
305 fh_copy_shallow(&cstate->current_fh.fh_handle, 305 fh_copy_shallow(&cstate->current_fh.fh_handle,
306 &rp->rp_openfh); 306 &rp->rp_openfh);
307 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); 307 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
308 if (status) 308 if (status)
309 dprintk("nfsd4_open: replay failed" 309 dprintk("nfsd4_open: replay failed"
310 " restoring previous filehandle\n"); 310 " restoring previous filehandle\n");
311 else 311 else
312 status = nfserr_replay_me; 312 status = nfserr_replay_me;
313 } 313 }
314 if (status) 314 if (status)
315 goto out; 315 goto out;
316 316
317 status = nfsd4_check_open_attributes(rqstp, cstate, open); 317 status = nfsd4_check_open_attributes(rqstp, cstate, open);
318 if (status) 318 if (status)
319 goto out; 319 goto out;
320 320
321 /* Openowner is now set, so sequence id will get bumped. Now we need 321 /* Openowner is now set, so sequence id will get bumped. Now we need
322 * these checks before we do any creates: */ 322 * these checks before we do any creates: */
323 status = nfserr_grace; 323 status = nfserr_grace;
324 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) 324 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
325 goto out; 325 goto out;
326 status = nfserr_no_grace; 326 status = nfserr_no_grace;
327 if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) 327 if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
328 goto out; 328 goto out;
329 329
330 switch (open->op_claim_type) { 330 switch (open->op_claim_type) {
331 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 331 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
332 case NFS4_OPEN_CLAIM_NULL: 332 case NFS4_OPEN_CLAIM_NULL:
333 /* 333 /*
334 * (1) set CURRENT_FH to the file being opened, 334 * (1) set CURRENT_FH to the file being opened,
335 * creating it if necessary, (2) set open->op_cinfo, 335 * creating it if necessary, (2) set open->op_cinfo,
336 * (3) set open->op_truncate if the file is to be 336 * (3) set open->op_truncate if the file is to be
337 * truncated after opening, (4) do permission checking. 337 * truncated after opening, (4) do permission checking.
338 */ 338 */
339 status = do_open_lookup(rqstp, &cstate->current_fh, 339 status = do_open_lookup(rqstp, &cstate->current_fh,
340 open); 340 open);
341 if (status) 341 if (status)
342 goto out; 342 goto out;
343 break; 343 break;
344 case NFS4_OPEN_CLAIM_PREVIOUS: 344 case NFS4_OPEN_CLAIM_PREVIOUS:
345 open->op_stateowner->so_confirmed = 1; 345 open->op_stateowner->so_confirmed = 1;
346 /* 346 /*
347 * The CURRENT_FH is already set to the file being 347 * The CURRENT_FH is already set to the file being
348 * opened. (1) set open->op_cinfo, (2) set 348 * opened. (1) set open->op_cinfo, (2) set
349 * open->op_truncate if the file is to be truncated 349 * open->op_truncate if the file is to be truncated
350 * after opening, (3) do permission checking. 350 * after opening, (3) do permission checking.
351 */ 351 */
352 status = do_open_fhandle(rqstp, &cstate->current_fh, 352 status = do_open_fhandle(rqstp, &cstate->current_fh,
353 open); 353 open);
354 if (status) 354 if (status)
355 goto out; 355 goto out;
356 break; 356 break;
357 case NFS4_OPEN_CLAIM_DELEGATE_PREV: 357 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
358 open->op_stateowner->so_confirmed = 1; 358 open->op_stateowner->so_confirmed = 1;
359 dprintk("NFSD: unsupported OPEN claim type %d\n", 359 dprintk("NFSD: unsupported OPEN claim type %d\n",
360 open->op_claim_type); 360 open->op_claim_type);
361 status = nfserr_notsupp; 361 status = nfserr_notsupp;
362 goto out; 362 goto out;
363 default: 363 default:
364 dprintk("NFSD: Invalid OPEN claim type %d\n", 364 dprintk("NFSD: Invalid OPEN claim type %d\n",
365 open->op_claim_type); 365 open->op_claim_type);
366 status = nfserr_inval; 366 status = nfserr_inval;
367 goto out; 367 goto out;
368 } 368 }
369 /* 369 /*
370 * nfsd4_process_open2() does the actual opening of the file. If 370 * nfsd4_process_open2() does the actual opening of the file. If
371 * successful, it (1) truncates the file if open->op_truncate was 371 * successful, it (1) truncates the file if open->op_truncate was
372 * set, (2) sets open->op_stateid, (3) sets open->op_delegation. 372 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
373 */ 373 */
374 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open); 374 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
375 out: 375 out:
376 if (open->op_stateowner) { 376 if (open->op_stateowner) {
377 nfs4_get_stateowner(open->op_stateowner); 377 nfs4_get_stateowner(open->op_stateowner);
378 cstate->replay_owner = open->op_stateowner; 378 cstate->replay_owner = open->op_stateowner;
379 } 379 }
380 nfs4_unlock_state(); 380 nfs4_unlock_state();
381 return status; 381 return status;
382 } 382 }
383 383
384 /* 384 /*
385 * filehandle-manipulating ops. 385 * filehandle-manipulating ops.
386 */ 386 */
387 static __be32 387 static __be32
388 nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 388 nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
389 struct svc_fh **getfh) 389 struct svc_fh **getfh)
390 { 390 {
391 if (!cstate->current_fh.fh_dentry) 391 if (!cstate->current_fh.fh_dentry)
392 return nfserr_nofilehandle; 392 return nfserr_nofilehandle;
393 393
394 *getfh = &cstate->current_fh; 394 *getfh = &cstate->current_fh;
395 return nfs_ok; 395 return nfs_ok;
396 } 396 }
397 397
398 static __be32 398 static __be32
399 nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 399 nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
400 struct nfsd4_putfh *putfh) 400 struct nfsd4_putfh *putfh)
401 { 401 {
402 fh_put(&cstate->current_fh); 402 fh_put(&cstate->current_fh);
403 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; 403 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
404 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, 404 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
405 putfh->pf_fhlen); 405 putfh->pf_fhlen);
406 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); 406 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
407 } 407 }
408 408
409 static __be32 409 static __be32
410 nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 410 nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
411 void *arg) 411 void *arg)
412 { 412 {
413 __be32 status; 413 __be32 status;
414 414
415 fh_put(&cstate->current_fh); 415 fh_put(&cstate->current_fh);
416 status = exp_pseudoroot(rqstp, &cstate->current_fh); 416 status = exp_pseudoroot(rqstp, &cstate->current_fh);
417 return status; 417 return status;
418 } 418 }
419 419
420 static __be32 420 static __be32
421 nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 421 nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
422 void *arg) 422 void *arg)
423 { 423 {
424 if (!cstate->save_fh.fh_dentry) 424 if (!cstate->save_fh.fh_dentry)
425 return nfserr_restorefh; 425 return nfserr_restorefh;
426 426
427 fh_dup2(&cstate->current_fh, &cstate->save_fh); 427 fh_dup2(&cstate->current_fh, &cstate->save_fh);
428 return nfs_ok; 428 return nfs_ok;
429 } 429 }
430 430
431 static __be32 431 static __be32
432 nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 432 nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
433 void *arg) 433 void *arg)
434 { 434 {
435 if (!cstate->current_fh.fh_dentry) 435 if (!cstate->current_fh.fh_dentry)
436 return nfserr_nofilehandle; 436 return nfserr_nofilehandle;
437 437
438 fh_dup2(&cstate->save_fh, &cstate->current_fh); 438 fh_dup2(&cstate->save_fh, &cstate->current_fh);
439 return nfs_ok; 439 return nfs_ok;
440 } 440 }
441 441
442 /* 442 /*
443 * misc nfsv4 ops 443 * misc nfsv4 ops
444 */ 444 */
445 static __be32 445 static __be32
446 nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 446 nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
447 struct nfsd4_access *access) 447 struct nfsd4_access *access)
448 { 448 {
449 if (access->ac_req_access & ~NFS3_ACCESS_FULL) 449 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
450 return nfserr_inval; 450 return nfserr_inval;
451 451
452 access->ac_resp_access = access->ac_req_access; 452 access->ac_resp_access = access->ac_req_access;
453 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, 453 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
454 &access->ac_supported); 454 &access->ac_supported);
455 } 455 }
456 456
457 static __be32 457 static __be32
458 nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 458 nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
459 struct nfsd4_commit *commit) 459 struct nfsd4_commit *commit)
460 { 460 {
461 __be32 status; 461 __be32 status;
462 462
463 u32 *p = (u32 *)commit->co_verf.data; 463 u32 *p = (u32 *)commit->co_verf.data;
464 *p++ = nfssvc_boot.tv_sec; 464 *p++ = nfssvc_boot.tv_sec;
465 *p++ = nfssvc_boot.tv_usec; 465 *p++ = nfssvc_boot.tv_usec;
466 466
467 status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, 467 status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
468 commit->co_count); 468 commit->co_count);
469 if (status == nfserr_symlink) 469 if (status == nfserr_symlink)
470 status = nfserr_inval; 470 status = nfserr_inval;
471 return status; 471 return status;
472 } 472 }
473 473
474 static __be32 474 static __be32
475 nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 475 nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
476 struct nfsd4_create *create) 476 struct nfsd4_create *create)
477 { 477 {
478 struct svc_fh resfh; 478 struct svc_fh resfh;
479 __be32 status; 479 __be32 status;
480 dev_t rdev; 480 dev_t rdev;
481 481
482 fh_init(&resfh, NFS4_FHSIZE); 482 fh_init(&resfh, NFS4_FHSIZE);
483 483
484 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, 484 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
485 NFSD_MAY_CREATE); 485 NFSD_MAY_CREATE);
486 if (status == nfserr_symlink) 486 if (status == nfserr_symlink)
487 status = nfserr_notdir; 487 status = nfserr_notdir;
488 if (status) 488 if (status)
489 return status; 489 return status;
490 490
491 status = check_attr_support(rqstp, cstate, create->cr_bmval, 491 status = check_attr_support(rqstp, cstate, create->cr_bmval,
492 nfsd_attrmask); 492 nfsd_attrmask);
493 if (status) 493 if (status)
494 return status; 494 return status;
495 495
496 switch (create->cr_type) { 496 switch (create->cr_type) {
497 case NF4LNK: 497 case NF4LNK:
498 /* ugh! we have to null-terminate the linktext, or 498 /* ugh! we have to null-terminate the linktext, or
499 * vfs_symlink() will choke. it is always safe to 499 * vfs_symlink() will choke. it is always safe to
500 * null-terminate by brute force, since at worst we 500 * null-terminate by brute force, since at worst we
501 * will overwrite the first byte of the create namelen 501 * will overwrite the first byte of the create namelen
502 * in the XDR buffer, which has already been extracted 502 * in the XDR buffer, which has already been extracted
503 * during XDR decode. 503 * during XDR decode.
504 */ 504 */
505 create->cr_linkname[create->cr_linklen] = 0; 505 create->cr_linkname[create->cr_linklen] = 0;
506 506
507 status = nfsd_symlink(rqstp, &cstate->current_fh, 507 status = nfsd_symlink(rqstp, &cstate->current_fh,
508 create->cr_name, create->cr_namelen, 508 create->cr_name, create->cr_namelen,
509 create->cr_linkname, create->cr_linklen, 509 create->cr_linkname, create->cr_linklen,
510 &resfh, &create->cr_iattr); 510 &resfh, &create->cr_iattr);
511 break; 511 break;
512 512
513 case NF4BLK: 513 case NF4BLK:
514 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); 514 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
515 if (MAJOR(rdev) != create->cr_specdata1 || 515 if (MAJOR(rdev) != create->cr_specdata1 ||
516 MINOR(rdev) != create->cr_specdata2) 516 MINOR(rdev) != create->cr_specdata2)
517 return nfserr_inval; 517 return nfserr_inval;
518 status = nfsd_create(rqstp, &cstate->current_fh, 518 status = nfsd_create(rqstp, &cstate->current_fh,
519 create->cr_name, create->cr_namelen, 519 create->cr_name, create->cr_namelen,
520 &create->cr_iattr, S_IFBLK, rdev, &resfh); 520 &create->cr_iattr, S_IFBLK, rdev, &resfh);
521 break; 521 break;
522 522
523 case NF4CHR: 523 case NF4CHR:
524 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); 524 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
525 if (MAJOR(rdev) != create->cr_specdata1 || 525 if (MAJOR(rdev) != create->cr_specdata1 ||
526 MINOR(rdev) != create->cr_specdata2) 526 MINOR(rdev) != create->cr_specdata2)
527 return nfserr_inval; 527 return nfserr_inval;
528 status = nfsd_create(rqstp, &cstate->current_fh, 528 status = nfsd_create(rqstp, &cstate->current_fh,
529 create->cr_name, create->cr_namelen, 529 create->cr_name, create->cr_namelen,
530 &create->cr_iattr,S_IFCHR, rdev, &resfh); 530 &create->cr_iattr,S_IFCHR, rdev, &resfh);
531 break; 531 break;
532 532
533 case NF4SOCK: 533 case NF4SOCK:
534 status = nfsd_create(rqstp, &cstate->current_fh, 534 status = nfsd_create(rqstp, &cstate->current_fh,
535 create->cr_name, create->cr_namelen, 535 create->cr_name, create->cr_namelen,
536 &create->cr_iattr, S_IFSOCK, 0, &resfh); 536 &create->cr_iattr, S_IFSOCK, 0, &resfh);
537 break; 537 break;
538 538
539 case NF4FIFO: 539 case NF4FIFO:
540 status = nfsd_create(rqstp, &cstate->current_fh, 540 status = nfsd_create(rqstp, &cstate->current_fh,
541 create->cr_name, create->cr_namelen, 541 create->cr_name, create->cr_namelen,
542 &create->cr_iattr, S_IFIFO, 0, &resfh); 542 &create->cr_iattr, S_IFIFO, 0, &resfh);
543 break; 543 break;
544 544
545 case NF4DIR: 545 case NF4DIR:
546 create->cr_iattr.ia_valid &= ~ATTR_SIZE; 546 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
547 status = nfsd_create(rqstp, &cstate->current_fh, 547 status = nfsd_create(rqstp, &cstate->current_fh,
548 create->cr_name, create->cr_namelen, 548 create->cr_name, create->cr_namelen,
549 &create->cr_iattr, S_IFDIR, 0, &resfh); 549 &create->cr_iattr, S_IFDIR, 0, &resfh);
550 break; 550 break;
551 551
552 default: 552 default:
553 status = nfserr_badtype; 553 status = nfserr_badtype;
554 } 554 }
555 555
556 if (status) 556 if (status)
557 goto out; 557 goto out;
558 558
559 if (create->cr_acl != NULL) 559 if (create->cr_acl != NULL)
560 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl, 560 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
561 create->cr_bmval); 561 create->cr_bmval);
562 562
563 fh_unlock(&cstate->current_fh); 563 fh_unlock(&cstate->current_fh);
564 set_change_info(&create->cr_cinfo, &cstate->current_fh); 564 set_change_info(&create->cr_cinfo, &cstate->current_fh);
565 fh_dup2(&cstate->current_fh, &resfh); 565 fh_dup2(&cstate->current_fh, &resfh);
566 out: 566 out:
567 fh_put(&resfh); 567 fh_put(&resfh);
568 return status; 568 return status;
569 } 569 }
570 570
571 static __be32 571 static __be32
572 nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 572 nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
573 struct nfsd4_getattr *getattr) 573 struct nfsd4_getattr *getattr)
574 { 574 {
575 __be32 status; 575 __be32 status;
576 576
577 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); 577 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
578 if (status) 578 if (status)
579 return status; 579 return status;
580 580
581 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) 581 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
582 return nfserr_inval; 582 return nfserr_inval;
583 583
584 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); 584 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
585 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); 585 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
586 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); 586 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
587 587
588 getattr->ga_fhp = &cstate->current_fh; 588 getattr->ga_fhp = &cstate->current_fh;
589 return nfs_ok; 589 return nfs_ok;
590 } 590 }
591 591
592 static __be32 592 static __be32
593 nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 593 nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
594 struct nfsd4_link *link) 594 struct nfsd4_link *link)
595 { 595 {
596 __be32 status = nfserr_nofilehandle; 596 __be32 status = nfserr_nofilehandle;
597 597
598 if (!cstate->save_fh.fh_dentry) 598 if (!cstate->save_fh.fh_dentry)
599 return status; 599 return status;
600 status = nfsd_link(rqstp, &cstate->current_fh, 600 status = nfsd_link(rqstp, &cstate->current_fh,
601 link->li_name, link->li_namelen, &cstate->save_fh); 601 link->li_name, link->li_namelen, &cstate->save_fh);
602 if (!status) 602 if (!status)
603 set_change_info(&link->li_cinfo, &cstate->current_fh); 603 set_change_info(&link->li_cinfo, &cstate->current_fh);
604 return status; 604 return status;
605 } 605 }
606 606
607 static __be32 607 static __be32
608 nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 608 nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
609 void *arg) 609 void *arg)
610 { 610 {
611 struct svc_fh tmp_fh; 611 struct svc_fh tmp_fh;
612 __be32 ret; 612 __be32 ret;
613 613
614 fh_init(&tmp_fh, NFS4_FHSIZE); 614 fh_init(&tmp_fh, NFS4_FHSIZE);
615 ret = exp_pseudoroot(rqstp, &tmp_fh); 615 ret = exp_pseudoroot(rqstp, &tmp_fh);
616 if (ret) 616 if (ret)
617 return ret; 617 return ret;
618 if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) { 618 if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) {
619 fh_put(&tmp_fh); 619 fh_put(&tmp_fh);
620 return nfserr_noent; 620 return nfserr_noent;
621 } 621 }
622 fh_put(&tmp_fh); 622 fh_put(&tmp_fh);
623 return nfsd_lookup(rqstp, &cstate->current_fh, 623 return nfsd_lookup(rqstp, &cstate->current_fh,
624 "..", 2, &cstate->current_fh); 624 "..", 2, &cstate->current_fh);
625 } 625 }
626 626
627 static __be32 627 static __be32
628 nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 628 nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
629 struct nfsd4_lookup *lookup) 629 struct nfsd4_lookup *lookup)
630 { 630 {
631 return nfsd_lookup(rqstp, &cstate->current_fh, 631 return nfsd_lookup(rqstp, &cstate->current_fh,
632 lookup->lo_name, lookup->lo_len, 632 lookup->lo_name, lookup->lo_len,
633 &cstate->current_fh); 633 &cstate->current_fh);
634 } 634 }
635 635
636 static __be32 636 static __be32
637 nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 637 nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
638 struct nfsd4_read *read) 638 struct nfsd4_read *read)
639 { 639 {
640 __be32 status; 640 __be32 status;
641 641
642 /* no need to check permission - this will be done in nfsd_read() */ 642 /* no need to check permission - this will be done in nfsd_read() */
643 643
644 read->rd_filp = NULL; 644 read->rd_filp = NULL;
645 if (read->rd_offset >= OFFSET_MAX) 645 if (read->rd_offset >= OFFSET_MAX)
646 return nfserr_inval; 646 return nfserr_inval;
647 647
648 nfs4_lock_state(); 648 nfs4_lock_state();
649 /* check stateid */ 649 /* check stateid */
650 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid, 650 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
651 RD_STATE, &read->rd_filp))) { 651 RD_STATE, &read->rd_filp))) {
652 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); 652 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
653 goto out; 653 goto out;
654 } 654 }
655 if (read->rd_filp) 655 if (read->rd_filp)
656 get_file(read->rd_filp); 656 get_file(read->rd_filp);
657 status = nfs_ok; 657 status = nfs_ok;
658 out: 658 out:
659 nfs4_unlock_state(); 659 nfs4_unlock_state();
660 read->rd_rqstp = rqstp; 660 read->rd_rqstp = rqstp;
661 read->rd_fhp = &cstate->current_fh; 661 read->rd_fhp = &cstate->current_fh;
662 return status; 662 return status;
663 } 663 }
664 664
665 static __be32 665 static __be32
666 nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 666 nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
667 struct nfsd4_readdir *readdir) 667 struct nfsd4_readdir *readdir)
668 { 668 {
669 u64 cookie = readdir->rd_cookie; 669 u64 cookie = readdir->rd_cookie;
670 static const nfs4_verifier zeroverf; 670 static const nfs4_verifier zeroverf;
671 671
672 /* no need to check permission - this will be done in nfsd_readdir() */ 672 /* no need to check permission - this will be done in nfsd_readdir() */
673 673
674 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) 674 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
675 return nfserr_inval; 675 return nfserr_inval;
676 676
677 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); 677 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
678 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); 678 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
679 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); 679 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
680 680
681 if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) || 681 if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
682 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) 682 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
683 return nfserr_bad_cookie; 683 return nfserr_bad_cookie;
684 684
685 readdir->rd_rqstp = rqstp; 685 readdir->rd_rqstp = rqstp;
686 readdir->rd_fhp = &cstate->current_fh; 686 readdir->rd_fhp = &cstate->current_fh;
687 return nfs_ok; 687 return nfs_ok;
688 } 688 }
689 689
690 static __be32 690 static __be32
691 nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 691 nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
692 struct nfsd4_readlink *readlink) 692 struct nfsd4_readlink *readlink)
693 { 693 {
694 readlink->rl_rqstp = rqstp; 694 readlink->rl_rqstp = rqstp;
695 readlink->rl_fhp = &cstate->current_fh; 695 readlink->rl_fhp = &cstate->current_fh;
696 return nfs_ok; 696 return nfs_ok;
697 } 697 }
698 698
699 static __be32 699 static __be32
700 nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 700 nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
701 struct nfsd4_remove *remove) 701 struct nfsd4_remove *remove)
702 { 702 {
703 __be32 status; 703 __be32 status;
704 704
705 if (locks_in_grace()) 705 if (locks_in_grace())
706 return nfserr_grace; 706 return nfserr_grace;
707 status = nfsd_unlink(rqstp, &cstate->current_fh, 0, 707 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
708 remove->rm_name, remove->rm_namelen); 708 remove->rm_name, remove->rm_namelen);
709 if (status == nfserr_symlink) 709 if (status == nfserr_symlink)
710 return nfserr_notdir; 710 return nfserr_notdir;
711 if (!status) { 711 if (!status) {
712 fh_unlock(&cstate->current_fh); 712 fh_unlock(&cstate->current_fh);
713 set_change_info(&remove->rm_cinfo, &cstate->current_fh); 713 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
714 } 714 }
715 return status; 715 return status;
716 } 716 }
717 717
718 static __be32 718 static __be32
719 nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 719 nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
720 struct nfsd4_rename *rename) 720 struct nfsd4_rename *rename)
721 { 721 {
722 __be32 status = nfserr_nofilehandle; 722 __be32 status = nfserr_nofilehandle;
723 723
724 if (!cstate->save_fh.fh_dentry) 724 if (!cstate->save_fh.fh_dentry)
725 return status; 725 return status;
726 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags 726 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
727 & NFSEXP_NOSUBTREECHECK)) 727 & NFSEXP_NOSUBTREECHECK))
728 return nfserr_grace; 728 return nfserr_grace;
729 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, 729 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
730 rename->rn_snamelen, &cstate->current_fh, 730 rename->rn_snamelen, &cstate->current_fh,
731 rename->rn_tname, rename->rn_tnamelen); 731 rename->rn_tname, rename->rn_tnamelen);
732 732
733 /* the underlying filesystem returns different error's than required 733 /* the underlying filesystem returns different error's than required
734 * by NFSv4. both save_fh and current_fh have been verified.. */ 734 * by NFSv4. both save_fh and current_fh have been verified.. */
735 if (status == nfserr_isdir) 735 if (status == nfserr_isdir)
736 status = nfserr_exist; 736 status = nfserr_exist;
737 else if ((status == nfserr_notdir) && 737 else if ((status == nfserr_notdir) &&
738 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) && 738 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
739 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode))) 739 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
740 status = nfserr_exist; 740 status = nfserr_exist;
741 else if (status == nfserr_symlink) 741 else if (status == nfserr_symlink)
742 status = nfserr_notdir; 742 status = nfserr_notdir;
743 743
744 if (!status) { 744 if (!status) {
745 set_change_info(&rename->rn_sinfo, &cstate->current_fh); 745 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
746 set_change_info(&rename->rn_tinfo, &cstate->save_fh); 746 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
747 } 747 }
748 return status; 748 return status;
749 } 749 }
750 750
751 static __be32 751 static __be32
752 nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 752 nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
753 struct nfsd4_secinfo *secinfo) 753 struct nfsd4_secinfo *secinfo)
754 { 754 {
755 struct svc_fh resfh; 755 struct svc_fh resfh;
756 struct svc_export *exp; 756 struct svc_export *exp;
757 struct dentry *dentry; 757 struct dentry *dentry;
758 __be32 err; 758 __be32 err;
759 759
760 fh_init(&resfh, NFS4_FHSIZE); 760 fh_init(&resfh, NFS4_FHSIZE);
761 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, 761 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
762 secinfo->si_name, secinfo->si_namelen, 762 secinfo->si_name, secinfo->si_namelen,
763 &exp, &dentry); 763 &exp, &dentry);
764 if (err) 764 if (err)
765 return err; 765 return err;
766 if (dentry->d_inode == NULL) { 766 if (dentry->d_inode == NULL) {
767 exp_put(exp); 767 exp_put(exp);
768 err = nfserr_noent; 768 err = nfserr_noent;
769 } else 769 } else
770 secinfo->si_exp = exp; 770 secinfo->si_exp = exp;
771 dput(dentry); 771 dput(dentry);
772 return err; 772 return err;
773 } 773 }
774 774
775 static __be32 775 static __be32
776 nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 776 nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
777 struct nfsd4_setattr *setattr) 777 struct nfsd4_setattr *setattr)
778 { 778 {
779 __be32 status = nfs_ok; 779 __be32 status = nfs_ok;
780 780
781 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { 781 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
782 nfs4_lock_state(); 782 nfs4_lock_state();
783 status = nfs4_preprocess_stateid_op(cstate, 783 status = nfs4_preprocess_stateid_op(cstate,
784 &setattr->sa_stateid, WR_STATE, NULL); 784 &setattr->sa_stateid, WR_STATE, NULL);
785 nfs4_unlock_state(); 785 nfs4_unlock_state();
786 if (status) { 786 if (status) {
787 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); 787 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
788 return status; 788 return status;
789 } 789 }
790 } 790 }
791 status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt); 791 status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
792 if (status) 792 if (status)
793 return status; 793 return status;
794 status = nfs_ok; 794 status = nfs_ok;
795 795
796 status = check_attr_support(rqstp, cstate, setattr->sa_bmval, 796 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
797 nfsd_attrmask); 797 nfsd_attrmask);
798 if (status) 798 if (status)
799 goto out; 799 goto out;
800 800
801 if (setattr->sa_acl != NULL) 801 if (setattr->sa_acl != NULL)
802 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, 802 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
803 setattr->sa_acl); 803 setattr->sa_acl);
804 if (status) 804 if (status)
805 goto out; 805 goto out;
806 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, 806 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
807 0, (time_t)0); 807 0, (time_t)0);
808 out: 808 out:
809 mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt); 809 mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt);
810 return status; 810 return status;
811 } 811 }
812 812
813 static __be32 813 static __be32
814 nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 814 nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
815 struct nfsd4_write *write) 815 struct nfsd4_write *write)
816 { 816 {
817 stateid_t *stateid = &write->wr_stateid; 817 stateid_t *stateid = &write->wr_stateid;
818 struct file *filp = NULL; 818 struct file *filp = NULL;
819 u32 *p; 819 u32 *p;
820 __be32 status = nfs_ok; 820 __be32 status = nfs_ok;
821 unsigned long cnt; 821 unsigned long cnt;
822 822
823 /* no need to check permission - this will be done in nfsd_write() */ 823 /* no need to check permission - this will be done in nfsd_write() */
824 824
825 if (write->wr_offset >= OFFSET_MAX) 825 if (write->wr_offset >= OFFSET_MAX)
826 return nfserr_inval; 826 return nfserr_inval;
827 827
828 nfs4_lock_state(); 828 nfs4_lock_state();
829 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp); 829 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
830 if (filp) 830 if (filp)
831 get_file(filp); 831 get_file(filp);
832 nfs4_unlock_state(); 832 nfs4_unlock_state();
833 833
834 if (status) { 834 if (status) {
835 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); 835 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
836 return status; 836 return status;
837 } 837 }
838 838
839 cnt = write->wr_buflen; 839 cnt = write->wr_buflen;
840 write->wr_how_written = write->wr_stable_how; 840 write->wr_how_written = write->wr_stable_how;
841 p = (u32 *)write->wr_verifier.data; 841 p = (u32 *)write->wr_verifier.data;
842 *p++ = nfssvc_boot.tv_sec; 842 *p++ = nfssvc_boot.tv_sec;
843 *p++ = nfssvc_boot.tv_usec; 843 *p++ = nfssvc_boot.tv_usec;
844 844
845 status = nfsd_write(rqstp, &cstate->current_fh, filp, 845 status = nfsd_write(rqstp, &cstate->current_fh, filp,
846 write->wr_offset, rqstp->rq_vec, write->wr_vlen, 846 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
847 &cnt, &write->wr_how_written); 847 &cnt, &write->wr_how_written);
848 if (filp) 848 if (filp)
849 fput(filp); 849 fput(filp);
850 850
851 write->wr_bytes_written = cnt; 851 write->wr_bytes_written = cnt;
852 852
853 if (status == nfserr_symlink) 853 if (status == nfserr_symlink)
854 status = nfserr_inval; 854 status = nfserr_inval;
855 return status; 855 return status;
856 } 856 }
857 857
858 /* This routine never returns NFS_OK! If there are no other errors, it 858 /* This routine never returns NFS_OK! If there are no other errors, it
859 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the 859 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
860 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME 860 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
861 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. 861 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
862 */ 862 */
863 static __be32 863 static __be32
864 _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 864 _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
865 struct nfsd4_verify *verify) 865 struct nfsd4_verify *verify)
866 { 866 {
867 __be32 *buf, *p; 867 __be32 *buf, *p;
868 int count; 868 int count;
869 __be32 status; 869 __be32 status;
870 870
871 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); 871 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
872 if (status) 872 if (status)
873 return status; 873 return status;
874 874
875 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL); 875 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
876 if (status) 876 if (status)
877 return status; 877 return status;
878 878
879 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) 879 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
880 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) 880 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
881 return nfserr_inval; 881 return nfserr_inval;
882 if (verify->ve_attrlen & 3) 882 if (verify->ve_attrlen & 3)
883 return nfserr_inval; 883 return nfserr_inval;
884 884
885 /* count in words: 885 /* count in words:
886 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 886 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
887 */ 887 */
888 count = 4 + (verify->ve_attrlen >> 2); 888 count = 4 + (verify->ve_attrlen >> 2);
889 buf = kmalloc(count << 2, GFP_KERNEL); 889 buf = kmalloc(count << 2, GFP_KERNEL);
890 if (!buf) 890 if (!buf)
891 return nfserr_resource; 891 return nfserr_resource;
892 892
893 status = nfsd4_encode_fattr(&cstate->current_fh, 893 status = nfsd4_encode_fattr(&cstate->current_fh,
894 cstate->current_fh.fh_export, 894 cstate->current_fh.fh_export,
895 cstate->current_fh.fh_dentry, buf, 895 cstate->current_fh.fh_dentry, buf,
896 &count, verify->ve_bmval, 896 &count, verify->ve_bmval,
897 rqstp, 0); 897 rqstp, 0);
898 898
899 /* this means that nfsd4_encode_fattr() ran out of space */ 899 /* this means that nfsd4_encode_fattr() ran out of space */
900 if (status == nfserr_resource && count == 0) 900 if (status == nfserr_resource && count == 0)
901 status = nfserr_not_same; 901 status = nfserr_not_same;
902 if (status) 902 if (status)
903 goto out_kfree; 903 goto out_kfree;
904 904
905 /* skip bitmap */ 905 /* skip bitmap */
906 p = buf + 1 + ntohl(buf[0]); 906 p = buf + 1 + ntohl(buf[0]);
907 status = nfserr_not_same; 907 status = nfserr_not_same;
908 if (ntohl(*p++) != verify->ve_attrlen) 908 if (ntohl(*p++) != verify->ve_attrlen)
909 goto out_kfree; 909 goto out_kfree;
910 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) 910 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
911 status = nfserr_same; 911 status = nfserr_same;
912 912
913 out_kfree: 913 out_kfree:
914 kfree(buf); 914 kfree(buf);
915 return status; 915 return status;
916 } 916 }
917 917
918 static __be32 918 static __be32
919 nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 919 nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
920 struct nfsd4_verify *verify) 920 struct nfsd4_verify *verify)
921 { 921 {
922 __be32 status; 922 __be32 status;
923 923
924 status = _nfsd4_verify(rqstp, cstate, verify); 924 status = _nfsd4_verify(rqstp, cstate, verify);
925 return status == nfserr_not_same ? nfs_ok : status; 925 return status == nfserr_not_same ? nfs_ok : status;
926 } 926 }
927 927
928 static __be32 928 static __be32
929 nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 929 nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
930 struct nfsd4_verify *verify) 930 struct nfsd4_verify *verify)
931 { 931 {
932 __be32 status; 932 __be32 status;
933 933
934 status = _nfsd4_verify(rqstp, cstate, verify); 934 status = _nfsd4_verify(rqstp, cstate, verify);
935 return status == nfserr_same ? nfs_ok : status; 935 return status == nfserr_same ? nfs_ok : status;
936 } 936 }
937 937
938 /* 938 /*
939 * NULL call. 939 * NULL call.
940 */ 940 */
941 static __be32 941 static __be32
942 nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) 942 nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
943 { 943 {
944 return nfs_ok; 944 return nfs_ok;
945 } 945 }
946 946
947 static inline void nfsd4_increment_op_stats(u32 opnum) 947 static inline void nfsd4_increment_op_stats(u32 opnum)
948 { 948 {
949 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) 949 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
950 nfsdstats.nfs4_opcount[opnum]++; 950 nfsdstats.nfs4_opcount[opnum]++;
951 } 951 }
952 952
953 typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, 953 typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
954 void *); 954 void *);
955 enum nfsd4_op_flags { 955 enum nfsd4_op_flags {
956 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ 956 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
957 ALLOWED_ON_ABSENT_FS = 2 << 0, /* ops processed on absent fs */ 957 ALLOWED_ON_ABSENT_FS = 2 << 0, /* ops processed on absent fs */
958 ALLOWED_AS_FIRST_OP = 3 << 0, /* ops reqired first in compound */ 958 ALLOWED_AS_FIRST_OP = 3 << 0, /* ops reqired first in compound */
959 }; 959 };
960 960
961 struct nfsd4_operation { 961 struct nfsd4_operation {
962 nfsd4op_func op_func; 962 nfsd4op_func op_func;
963 u32 op_flags; 963 u32 op_flags;
964 char *op_name; 964 char *op_name;
965 }; 965 };
966 966
967 static struct nfsd4_operation nfsd4_ops[]; 967 static struct nfsd4_operation nfsd4_ops[];
968 968
969 static const char *nfsd4_op_name(unsigned opnum); 969 static const char *nfsd4_op_name(unsigned opnum);
970 970
971 /* 971 /*
972 * Enforce NFSv4.1 COMPOUND ordering rules: 972 * Enforce NFSv4.1 COMPOUND ordering rules:
973 * 973 *
974 * Also note, enforced elsewhere: 974 * Also note, enforced elsewhere:
975 * - SEQUENCE other than as first op results in 975 * - SEQUENCE other than as first op results in
976 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().) 976 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
977 * - BIND_CONN_TO_SESSION must be the only op in its compound 977 * - BIND_CONN_TO_SESSION must be the only op in its compound
978 * (Will be enforced in nfsd4_bind_conn_to_session().) 978 * (Will be enforced in nfsd4_bind_conn_to_session().)
979 * - DESTROY_SESSION must be the final operation in a compound, if 979 * - DESTROY_SESSION must be the final operation in a compound, if
980 * sessionid's in SEQUENCE and DESTROY_SESSION are the same. 980 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
981 * (Enforced in nfsd4_destroy_session().) 981 * (Enforced in nfsd4_destroy_session().)
982 */ 982 */
983 static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args) 983 static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
984 { 984 {
985 struct nfsd4_op *op = &args->ops[0]; 985 struct nfsd4_op *op = &args->ops[0];
986 986
987 /* These ordering requirements don't apply to NFSv4.0: */ 987 /* These ordering requirements don't apply to NFSv4.0: */
988 if (args->minorversion == 0) 988 if (args->minorversion == 0)
989 return nfs_ok; 989 return nfs_ok;
990 /* This is weird, but OK, not our problem: */ 990 /* This is weird, but OK, not our problem: */
991 if (args->opcnt == 0) 991 if (args->opcnt == 0)
992 return nfs_ok; 992 return nfs_ok;
993 if (op->status == nfserr_op_illegal) 993 if (op->status == nfserr_op_illegal)
994 return nfs_ok; 994 return nfs_ok;
995 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP)) 995 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
996 return nfserr_op_not_in_session; 996 return nfserr_op_not_in_session;
997 if (op->opnum == OP_SEQUENCE) 997 if (op->opnum == OP_SEQUENCE)
998 return nfs_ok; 998 return nfs_ok;
999 if (args->opcnt != 1) 999 if (args->opcnt != 1)
1000 return nfserr_not_only_op; 1000 return nfserr_not_only_op;
1001 return nfs_ok; 1001 return nfs_ok;
1002 } 1002 }
1003 1003
1004 /* 1004 /*
1005 * COMPOUND call. 1005 * COMPOUND call.
1006 */ 1006 */
1007 static __be32 1007 static __be32
1008 nfsd4_proc_compound(struct svc_rqst *rqstp, 1008 nfsd4_proc_compound(struct svc_rqst *rqstp,
1009 struct nfsd4_compoundargs *args, 1009 struct nfsd4_compoundargs *args,
1010 struct nfsd4_compoundres *resp) 1010 struct nfsd4_compoundres *resp)
1011 { 1011 {
1012 struct nfsd4_op *op; 1012 struct nfsd4_op *op;
1013 struct nfsd4_operation *opdesc; 1013 struct nfsd4_operation *opdesc;
1014 struct nfsd4_compound_state *cstate = &resp->cstate; 1014 struct nfsd4_compound_state *cstate = &resp->cstate;
1015 int slack_bytes; 1015 int slack_bytes;
1016 __be32 status; 1016 __be32 status;
1017 1017
1018 resp->xbuf = &rqstp->rq_res; 1018 resp->xbuf = &rqstp->rq_res;
1019 resp->p = rqstp->rq_res.head[0].iov_base + 1019 resp->p = rqstp->rq_res.head[0].iov_base +
1020 rqstp->rq_res.head[0].iov_len; 1020 rqstp->rq_res.head[0].iov_len;
1021 resp->tagp = resp->p; 1021 resp->tagp = resp->p;
1022 /* reserve space for: taglen, tag, and opcnt */ 1022 /* reserve space for: taglen, tag, and opcnt */
1023 resp->p += 2 + XDR_QUADLEN(args->taglen); 1023 resp->p += 2 + XDR_QUADLEN(args->taglen);
1024 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; 1024 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
1025 resp->taglen = args->taglen; 1025 resp->taglen = args->taglen;
1026 resp->tag = args->tag; 1026 resp->tag = args->tag;
1027 resp->opcnt = 0; 1027 resp->opcnt = 0;
1028 resp->rqstp = rqstp; 1028 resp->rqstp = rqstp;
1029 resp->cstate.minorversion = args->minorversion; 1029 resp->cstate.minorversion = args->minorversion;
1030 resp->cstate.replay_owner = NULL; 1030 resp->cstate.replay_owner = NULL;
1031 resp->cstate.session = NULL; 1031 resp->cstate.session = NULL;
1032 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE); 1032 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
1033 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE); 1033 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
1034 /* Use the deferral mechanism only for NFSv4.0 compounds */ 1034 /*
1035 rqstp->rq_usedeferral = (args->minorversion == 0); 1035 * Don't use the deferral mechanism for NFSv4; compounds make it
1036 * too hard to avoid non-idempotency problems.
1037 */
1038 rqstp->rq_usedeferral = 0;
1036 1039
1037 /* 1040 /*
1038 * According to RFC3010, this takes precedence over all other errors. 1041 * According to RFC3010, this takes precedence over all other errors.
1039 */ 1042 */
1040 status = nfserr_minor_vers_mismatch; 1043 status = nfserr_minor_vers_mismatch;
1041 if (args->minorversion > nfsd_supported_minorversion) 1044 if (args->minorversion > nfsd_supported_minorversion)
1042 goto out; 1045 goto out;
1043 1046
1044 status = nfs41_check_op_ordering(args); 1047 status = nfs41_check_op_ordering(args);
1045 if (status) { 1048 if (status) {
1046 op = &args->ops[0]; 1049 op = &args->ops[0];
1047 op->status = status; 1050 op->status = status;
1048 goto encode_op; 1051 goto encode_op;
1049 } 1052 }
1050 1053
1051 while (!status && resp->opcnt < args->opcnt) { 1054 while (!status && resp->opcnt < args->opcnt) {
1052 op = &args->ops[resp->opcnt++]; 1055 op = &args->ops[resp->opcnt++];
1053 1056
1054 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n", 1057 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1055 resp->opcnt, args->opcnt, op->opnum, 1058 resp->opcnt, args->opcnt, op->opnum,
1056 nfsd4_op_name(op->opnum)); 1059 nfsd4_op_name(op->opnum));
1057 /* 1060 /*
1058 * The XDR decode routines may have pre-set op->status; 1061 * The XDR decode routines may have pre-set op->status;
1059 * for example, if there is a miscellaneous XDR error 1062 * for example, if there is a miscellaneous XDR error
1060 * it will be set to nfserr_bad_xdr. 1063 * it will be set to nfserr_bad_xdr.
1061 */ 1064 */
1062 if (op->status) 1065 if (op->status)
1063 goto encode_op; 1066 goto encode_op;
1064 1067
1065 /* We must be able to encode a successful response to 1068 /* We must be able to encode a successful response to
1066 * this operation, with enough room left over to encode a 1069 * this operation, with enough room left over to encode a
1067 * failed response to the next operation. If we don't 1070 * failed response to the next operation. If we don't
1068 * have enough room, fail with ERR_RESOURCE. 1071 * have enough room, fail with ERR_RESOURCE.
1069 */ 1072 */
1070 slack_bytes = (char *)resp->end - (char *)resp->p; 1073 slack_bytes = (char *)resp->end - (char *)resp->p;
1071 if (slack_bytes < COMPOUND_SLACK_SPACE 1074 if (slack_bytes < COMPOUND_SLACK_SPACE
1072 + COMPOUND_ERR_SLACK_SPACE) { 1075 + COMPOUND_ERR_SLACK_SPACE) {
1073 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); 1076 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
1074 op->status = nfserr_resource; 1077 op->status = nfserr_resource;
1075 goto encode_op; 1078 goto encode_op;
1076 } 1079 }
1077 1080
1078 opdesc = &nfsd4_ops[op->opnum]; 1081 opdesc = &nfsd4_ops[op->opnum];
1079 1082
1080 if (!cstate->current_fh.fh_dentry) { 1083 if (!cstate->current_fh.fh_dentry) {
1081 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { 1084 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
1082 op->status = nfserr_nofilehandle; 1085 op->status = nfserr_nofilehandle;
1083 goto encode_op; 1086 goto encode_op;
1084 } 1087 }
1085 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated && 1088 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
1086 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { 1089 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
1087 op->status = nfserr_moved; 1090 op->status = nfserr_moved;
1088 goto encode_op; 1091 goto encode_op;
1089 } 1092 }
1090 1093
1091 if (opdesc->op_func) 1094 if (opdesc->op_func)
1092 op->status = opdesc->op_func(rqstp, cstate, &op->u); 1095 op->status = opdesc->op_func(rqstp, cstate, &op->u);
1093 else 1096 else
1094 BUG_ON(op->status == nfs_ok); 1097 BUG_ON(op->status == nfs_ok);
1095 1098
1096 encode_op: 1099 encode_op:
1097 /* Only from SEQUENCE */ 1100 /* Only from SEQUENCE */
1098 if (resp->cstate.status == nfserr_replay_cache) { 1101 if (resp->cstate.status == nfserr_replay_cache) {
1099 dprintk("%s NFS4.1 replay from cache\n", __func__); 1102 dprintk("%s NFS4.1 replay from cache\n", __func__);
1100 status = op->status; 1103 status = op->status;
1101 goto out; 1104 goto out;
1102 } 1105 }
1103 if (op->status == nfserr_replay_me) { 1106 if (op->status == nfserr_replay_me) {
1104 op->replay = &cstate->replay_owner->so_replay; 1107 op->replay = &cstate->replay_owner->so_replay;
1105 nfsd4_encode_replay(resp, op); 1108 nfsd4_encode_replay(resp, op);
1106 status = op->status = op->replay->rp_status; 1109 status = op->status = op->replay->rp_status;
1107 } else { 1110 } else {
1108 nfsd4_encode_operation(resp, op); 1111 nfsd4_encode_operation(resp, op);
1109 status = op->status; 1112 status = op->status;
1110 } 1113 }
1111 1114
1112 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n", 1115 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1113 args->ops, args->opcnt, resp->opcnt, op->opnum, 1116 args->ops, args->opcnt, resp->opcnt, op->opnum,
1114 be32_to_cpu(status)); 1117 be32_to_cpu(status));
1115 1118
1116 if (cstate->replay_owner) { 1119 if (cstate->replay_owner) {
1117 nfs4_put_stateowner(cstate->replay_owner); 1120 nfs4_put_stateowner(cstate->replay_owner);
1118 cstate->replay_owner = NULL; 1121 cstate->replay_owner = NULL;
1119 } 1122 }
1120 /* XXX Ugh, we need to get rid of this kind of special case: */ 1123 /* XXX Ugh, we need to get rid of this kind of special case: */
1121 if (op->opnum == OP_READ && op->u.read.rd_filp) 1124 if (op->opnum == OP_READ && op->u.read.rd_filp)
1122 fput(op->u.read.rd_filp); 1125 fput(op->u.read.rd_filp);
1123 1126
1124 nfsd4_increment_op_stats(op->opnum); 1127 nfsd4_increment_op_stats(op->opnum);
1125 } 1128 }
1126 if (!rqstp->rq_usedeferral && status == nfserr_dropit) { 1129 if (!rqstp->rq_usedeferral && status == nfserr_dropit) {
1127 dprintk("%s Dropit - send NFS4ERR_DELAY\n", __func__); 1130 dprintk("%s Dropit - send NFS4ERR_DELAY\n", __func__);
1128 status = nfserr_jukebox; 1131 status = nfserr_jukebox;
1129 } 1132 }
1130 1133
1131 resp->cstate.status = status; 1134 resp->cstate.status = status;
1132 fh_put(&resp->cstate.current_fh); 1135 fh_put(&resp->cstate.current_fh);
1133 fh_put(&resp->cstate.save_fh); 1136 fh_put(&resp->cstate.save_fh);
1134 BUG_ON(resp->cstate.replay_owner); 1137 BUG_ON(resp->cstate.replay_owner);
1135 out: 1138 out:
1136 nfsd4_release_compoundargs(args); 1139 nfsd4_release_compoundargs(args);
1137 /* Reset deferral mechanism for RPC deferrals */ 1140 /* Reset deferral mechanism for RPC deferrals */
1138 rqstp->rq_usedeferral = 1; 1141 rqstp->rq_usedeferral = 1;
1139 dprintk("nfsv4 compound returned %d\n", ntohl(status)); 1142 dprintk("nfsv4 compound returned %d\n", ntohl(status));
1140 return status; 1143 return status;
1141 } 1144 }
1142 1145
1143 static struct nfsd4_operation nfsd4_ops[] = { 1146 static struct nfsd4_operation nfsd4_ops[] = {
1144 [OP_ACCESS] = { 1147 [OP_ACCESS] = {
1145 .op_func = (nfsd4op_func)nfsd4_access, 1148 .op_func = (nfsd4op_func)nfsd4_access,
1146 .op_name = "OP_ACCESS", 1149 .op_name = "OP_ACCESS",
1147 }, 1150 },
1148 [OP_CLOSE] = { 1151 [OP_CLOSE] = {
1149 .op_func = (nfsd4op_func)nfsd4_close, 1152 .op_func = (nfsd4op_func)nfsd4_close,
1150 .op_name = "OP_CLOSE", 1153 .op_name = "OP_CLOSE",
1151 }, 1154 },
1152 [OP_COMMIT] = { 1155 [OP_COMMIT] = {
1153 .op_func = (nfsd4op_func)nfsd4_commit, 1156 .op_func = (nfsd4op_func)nfsd4_commit,
1154 .op_name = "OP_COMMIT", 1157 .op_name = "OP_COMMIT",
1155 }, 1158 },
1156 [OP_CREATE] = { 1159 [OP_CREATE] = {
1157 .op_func = (nfsd4op_func)nfsd4_create, 1160 .op_func = (nfsd4op_func)nfsd4_create,
1158 .op_name = "OP_CREATE", 1161 .op_name = "OP_CREATE",
1159 }, 1162 },
1160 [OP_DELEGRETURN] = { 1163 [OP_DELEGRETURN] = {
1161 .op_func = (nfsd4op_func)nfsd4_delegreturn, 1164 .op_func = (nfsd4op_func)nfsd4_delegreturn,
1162 .op_name = "OP_DELEGRETURN", 1165 .op_name = "OP_DELEGRETURN",
1163 }, 1166 },
1164 [OP_GETATTR] = { 1167 [OP_GETATTR] = {
1165 .op_func = (nfsd4op_func)nfsd4_getattr, 1168 .op_func = (nfsd4op_func)nfsd4_getattr,
1166 .op_flags = ALLOWED_ON_ABSENT_FS, 1169 .op_flags = ALLOWED_ON_ABSENT_FS,
1167 .op_name = "OP_GETATTR", 1170 .op_name = "OP_GETATTR",
1168 }, 1171 },
1169 [OP_GETFH] = { 1172 [OP_GETFH] = {
1170 .op_func = (nfsd4op_func)nfsd4_getfh, 1173 .op_func = (nfsd4op_func)nfsd4_getfh,
1171 .op_name = "OP_GETFH", 1174 .op_name = "OP_GETFH",
1172 }, 1175 },
1173 [OP_LINK] = { 1176 [OP_LINK] = {
1174 .op_func = (nfsd4op_func)nfsd4_link, 1177 .op_func = (nfsd4op_func)nfsd4_link,
1175 .op_name = "OP_LINK", 1178 .op_name = "OP_LINK",
1176 }, 1179 },
1177 [OP_LOCK] = { 1180 [OP_LOCK] = {
1178 .op_func = (nfsd4op_func)nfsd4_lock, 1181 .op_func = (nfsd4op_func)nfsd4_lock,
1179 .op_name = "OP_LOCK", 1182 .op_name = "OP_LOCK",
1180 }, 1183 },
1181 [OP_LOCKT] = { 1184 [OP_LOCKT] = {
1182 .op_func = (nfsd4op_func)nfsd4_lockt, 1185 .op_func = (nfsd4op_func)nfsd4_lockt,
1183 .op_name = "OP_LOCKT", 1186 .op_name = "OP_LOCKT",
1184 }, 1187 },
1185 [OP_LOCKU] = { 1188 [OP_LOCKU] = {
1186 .op_func = (nfsd4op_func)nfsd4_locku, 1189 .op_func = (nfsd4op_func)nfsd4_locku,
1187 .op_name = "OP_LOCKU", 1190 .op_name = "OP_LOCKU",
1188 }, 1191 },
1189 [OP_LOOKUP] = { 1192 [OP_LOOKUP] = {
1190 .op_func = (nfsd4op_func)nfsd4_lookup, 1193 .op_func = (nfsd4op_func)nfsd4_lookup,
1191 .op_name = "OP_LOOKUP", 1194 .op_name = "OP_LOOKUP",
1192 }, 1195 },
1193 [OP_LOOKUPP] = { 1196 [OP_LOOKUPP] = {
1194 .op_func = (nfsd4op_func)nfsd4_lookupp, 1197 .op_func = (nfsd4op_func)nfsd4_lookupp,
1195 .op_name = "OP_LOOKUPP", 1198 .op_name = "OP_LOOKUPP",
1196 }, 1199 },
1197 [OP_NVERIFY] = { 1200 [OP_NVERIFY] = {
1198 .op_func = (nfsd4op_func)nfsd4_nverify, 1201 .op_func = (nfsd4op_func)nfsd4_nverify,
1199 .op_name = "OP_NVERIFY", 1202 .op_name = "OP_NVERIFY",
1200 }, 1203 },
1201 [OP_OPEN] = { 1204 [OP_OPEN] = {
1202 .op_func = (nfsd4op_func)nfsd4_open, 1205 .op_func = (nfsd4op_func)nfsd4_open,
1203 .op_name = "OP_OPEN", 1206 .op_name = "OP_OPEN",
1204 }, 1207 },
1205 [OP_OPEN_CONFIRM] = { 1208 [OP_OPEN_CONFIRM] = {
1206 .op_func = (nfsd4op_func)nfsd4_open_confirm, 1209 .op_func = (nfsd4op_func)nfsd4_open_confirm,
1207 .op_name = "OP_OPEN_CONFIRM", 1210 .op_name = "OP_OPEN_CONFIRM",
1208 }, 1211 },
1209 [OP_OPEN_DOWNGRADE] = { 1212 [OP_OPEN_DOWNGRADE] = {
1210 .op_func = (nfsd4op_func)nfsd4_open_downgrade, 1213 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
1211 .op_name = "OP_OPEN_DOWNGRADE", 1214 .op_name = "OP_OPEN_DOWNGRADE",
1212 }, 1215 },
1213 [OP_PUTFH] = { 1216 [OP_PUTFH] = {
1214 .op_func = (nfsd4op_func)nfsd4_putfh, 1217 .op_func = (nfsd4op_func)nfsd4_putfh,
1215 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1218 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1216 .op_name = "OP_PUTFH", 1219 .op_name = "OP_PUTFH",
1217 }, 1220 },
1218 [OP_PUTPUBFH] = { 1221 [OP_PUTPUBFH] = {
1219 .op_func = (nfsd4op_func)nfsd4_putrootfh, 1222 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1220 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1223 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1221 .op_name = "OP_PUTPUBFH", 1224 .op_name = "OP_PUTPUBFH",
1222 }, 1225 },
1223 [OP_PUTROOTFH] = { 1226 [OP_PUTROOTFH] = {
1224 .op_func = (nfsd4op_func)nfsd4_putrootfh, 1227 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1225 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1228 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1226 .op_name = "OP_PUTROOTFH", 1229 .op_name = "OP_PUTROOTFH",
1227 }, 1230 },
1228 [OP_READ] = { 1231 [OP_READ] = {
1229 .op_func = (nfsd4op_func)nfsd4_read, 1232 .op_func = (nfsd4op_func)nfsd4_read,
1230 .op_name = "OP_READ", 1233 .op_name = "OP_READ",
1231 }, 1234 },
1232 [OP_READDIR] = { 1235 [OP_READDIR] = {
1233 .op_func = (nfsd4op_func)nfsd4_readdir, 1236 .op_func = (nfsd4op_func)nfsd4_readdir,
1234 .op_name = "OP_READDIR", 1237 .op_name = "OP_READDIR",
1235 }, 1238 },
1236 [OP_READLINK] = { 1239 [OP_READLINK] = {
1237 .op_func = (nfsd4op_func)nfsd4_readlink, 1240 .op_func = (nfsd4op_func)nfsd4_readlink,
1238 .op_name = "OP_READLINK", 1241 .op_name = "OP_READLINK",
1239 }, 1242 },
1240 [OP_REMOVE] = { 1243 [OP_REMOVE] = {
1241 .op_func = (nfsd4op_func)nfsd4_remove, 1244 .op_func = (nfsd4op_func)nfsd4_remove,
1242 .op_name = "OP_REMOVE", 1245 .op_name = "OP_REMOVE",
1243 }, 1246 },
1244 [OP_RENAME] = { 1247 [OP_RENAME] = {
1245 .op_name = "OP_RENAME", 1248 .op_name = "OP_RENAME",
1246 .op_func = (nfsd4op_func)nfsd4_rename, 1249 .op_func = (nfsd4op_func)nfsd4_rename,
1247 }, 1250 },
1248 [OP_RENEW] = { 1251 [OP_RENEW] = {
1249 .op_func = (nfsd4op_func)nfsd4_renew, 1252 .op_func = (nfsd4op_func)nfsd4_renew,
1250 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1253 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1251 .op_name = "OP_RENEW", 1254 .op_name = "OP_RENEW",
1252 }, 1255 },
1253 [OP_RESTOREFH] = { 1256 [OP_RESTOREFH] = {
1254 .op_func = (nfsd4op_func)nfsd4_restorefh, 1257 .op_func = (nfsd4op_func)nfsd4_restorefh,
1255 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1258 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1256 .op_name = "OP_RESTOREFH", 1259 .op_name = "OP_RESTOREFH",
1257 }, 1260 },
1258 [OP_SAVEFH] = { 1261 [OP_SAVEFH] = {
1259 .op_func = (nfsd4op_func)nfsd4_savefh, 1262 .op_func = (nfsd4op_func)nfsd4_savefh,
1260 .op_name = "OP_SAVEFH", 1263 .op_name = "OP_SAVEFH",
1261 }, 1264 },
1262 [OP_SECINFO] = { 1265 [OP_SECINFO] = {
1263 .op_func = (nfsd4op_func)nfsd4_secinfo, 1266 .op_func = (nfsd4op_func)nfsd4_secinfo,
1264 .op_name = "OP_SECINFO", 1267 .op_name = "OP_SECINFO",
1265 }, 1268 },
1266 [OP_SETATTR] = { 1269 [OP_SETATTR] = {
1267 .op_func = (nfsd4op_func)nfsd4_setattr, 1270 .op_func = (nfsd4op_func)nfsd4_setattr,
1268 .op_name = "OP_SETATTR", 1271 .op_name = "OP_SETATTR",
1269 }, 1272 },
1270 [OP_SETCLIENTID] = { 1273 [OP_SETCLIENTID] = {
1271 .op_func = (nfsd4op_func)nfsd4_setclientid, 1274 .op_func = (nfsd4op_func)nfsd4_setclientid,
1272 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1275 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1273 .op_name = "OP_SETCLIENTID", 1276 .op_name = "OP_SETCLIENTID",
1274 }, 1277 },
1275 [OP_SETCLIENTID_CONFIRM] = { 1278 [OP_SETCLIENTID_CONFIRM] = {
1276 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, 1279 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
1277 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1280 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1278 .op_name = "OP_SETCLIENTID_CONFIRM", 1281 .op_name = "OP_SETCLIENTID_CONFIRM",
1279 }, 1282 },
1280 [OP_VERIFY] = { 1283 [OP_VERIFY] = {
1281 .op_func = (nfsd4op_func)nfsd4_verify, 1284 .op_func = (nfsd4op_func)nfsd4_verify,
1282 .op_name = "OP_VERIFY", 1285 .op_name = "OP_VERIFY",
1283 }, 1286 },
1284 [OP_WRITE] = { 1287 [OP_WRITE] = {
1285 .op_func = (nfsd4op_func)nfsd4_write, 1288 .op_func = (nfsd4op_func)nfsd4_write,
1286 .op_name = "OP_WRITE", 1289 .op_name = "OP_WRITE",
1287 }, 1290 },
1288 [OP_RELEASE_LOCKOWNER] = { 1291 [OP_RELEASE_LOCKOWNER] = {
1289 .op_func = (nfsd4op_func)nfsd4_release_lockowner, 1292 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
1290 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1293 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1291 .op_name = "OP_RELEASE_LOCKOWNER", 1294 .op_name = "OP_RELEASE_LOCKOWNER",
1292 }, 1295 },
1293 1296
1294 /* NFSv4.1 operations */ 1297 /* NFSv4.1 operations */
1295 [OP_EXCHANGE_ID] = { 1298 [OP_EXCHANGE_ID] = {
1296 .op_func = (nfsd4op_func)nfsd4_exchange_id, 1299 .op_func = (nfsd4op_func)nfsd4_exchange_id,
1297 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, 1300 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1298 .op_name = "OP_EXCHANGE_ID", 1301 .op_name = "OP_EXCHANGE_ID",
1299 }, 1302 },
1300 [OP_CREATE_SESSION] = { 1303 [OP_CREATE_SESSION] = {
1301 .op_func = (nfsd4op_func)nfsd4_create_session, 1304 .op_func = (nfsd4op_func)nfsd4_create_session,
1302 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, 1305 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1303 .op_name = "OP_CREATE_SESSION", 1306 .op_name = "OP_CREATE_SESSION",
1304 }, 1307 },
1305 [OP_DESTROY_SESSION] = { 1308 [OP_DESTROY_SESSION] = {
1306 .op_func = (nfsd4op_func)nfsd4_destroy_session, 1309 .op_func = (nfsd4op_func)nfsd4_destroy_session,
1307 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, 1310 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1308 .op_name = "OP_DESTROY_SESSION", 1311 .op_name = "OP_DESTROY_SESSION",
1309 }, 1312 },
1310 [OP_SEQUENCE] = { 1313 [OP_SEQUENCE] = {
1311 .op_func = (nfsd4op_func)nfsd4_sequence, 1314 .op_func = (nfsd4op_func)nfsd4_sequence,
1312 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, 1315 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1313 .op_name = "OP_SEQUENCE", 1316 .op_name = "OP_SEQUENCE",
1314 }, 1317 },
1315 [OP_RECLAIM_COMPLETE] = { 1318 [OP_RECLAIM_COMPLETE] = {
1316 .op_func = (nfsd4op_func)nfsd4_reclaim_complete, 1319 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
1317 .op_flags = ALLOWED_WITHOUT_FH, 1320 .op_flags = ALLOWED_WITHOUT_FH,
1318 .op_name = "OP_RECLAIM_COMPLETE", 1321 .op_name = "OP_RECLAIM_COMPLETE",
1319 }, 1322 },
1320 }; 1323 };
1321 1324
1322 static const char *nfsd4_op_name(unsigned opnum) 1325 static const char *nfsd4_op_name(unsigned opnum)
1323 { 1326 {
1324 if (opnum < ARRAY_SIZE(nfsd4_ops)) 1327 if (opnum < ARRAY_SIZE(nfsd4_ops))
1325 return nfsd4_ops[opnum].op_name; 1328 return nfsd4_ops[opnum].op_name;
1326 return "unknown_operation"; 1329 return "unknown_operation";
1327 } 1330 }
1328 1331
1329 #define nfsd4_voidres nfsd4_voidargs 1332 #define nfsd4_voidres nfsd4_voidargs
1330 struct nfsd4_voidargs { int dummy; }; 1333 struct nfsd4_voidargs { int dummy; };
1331 1334
1332 /* 1335 /*
1333 * TODO: At the present time, the NFSv4 server does not do XID caching 1336 * TODO: At the present time, the NFSv4 server does not do XID caching
1334 * of requests. Implementing XID caching would not be a serious problem, 1337 * of requests. Implementing XID caching would not be a serious problem,
1335 * although it would require a mild change in interfaces since one 1338 * although it would require a mild change in interfaces since one
1336 * doesn't know whether an NFSv4 request is idempotent until after the 1339 * doesn't know whether an NFSv4 request is idempotent until after the
1337 * XDR decode. However, XID caching totally confuses pynfs (Peter 1340 * XDR decode. However, XID caching totally confuses pynfs (Peter
1338 * Astrand's regression testsuite for NFSv4 servers), which reuses 1341 * Astrand's regression testsuite for NFSv4 servers), which reuses
1339 * XID's liberally, so I've left it unimplemented until pynfs generates 1342 * XID's liberally, so I've left it unimplemented until pynfs generates
1340 * better XID's. 1343 * better XID's.
1341 */ 1344 */
1342 static struct svc_procedure nfsd_procedures4[2] = { 1345 static struct svc_procedure nfsd_procedures4[2] = {
1343 [NFSPROC4_NULL] = { 1346 [NFSPROC4_NULL] = {
1344 .pc_func = (svc_procfunc) nfsd4_proc_null, 1347 .pc_func = (svc_procfunc) nfsd4_proc_null,
1345 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres, 1348 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1346 .pc_argsize = sizeof(struct nfsd4_voidargs), 1349 .pc_argsize = sizeof(struct nfsd4_voidargs),
1347 .pc_ressize = sizeof(struct nfsd4_voidres), 1350 .pc_ressize = sizeof(struct nfsd4_voidres),
1348 .pc_cachetype = RC_NOCACHE, 1351 .pc_cachetype = RC_NOCACHE,
1349 .pc_xdrressize = 1, 1352 .pc_xdrressize = 1,
1350 }, 1353 },
1351 [NFSPROC4_COMPOUND] = { 1354 [NFSPROC4_COMPOUND] = {
1352 .pc_func = (svc_procfunc) nfsd4_proc_compound, 1355 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1353 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs, 1356 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1354 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres, 1357 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1355 .pc_argsize = sizeof(struct nfsd4_compoundargs), 1358 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1356 .pc_ressize = sizeof(struct nfsd4_compoundres), 1359 .pc_ressize = sizeof(struct nfsd4_compoundres),
1357 .pc_cachetype = RC_NOCACHE, 1360 .pc_cachetype = RC_NOCACHE,
1358 .pc_xdrressize = NFSD_BUFSIZE/4, 1361 .pc_xdrressize = NFSD_BUFSIZE/4,
1359 }, 1362 },
1360 }; 1363 };
1361 1364
1362 struct svc_version nfsd_version4 = { 1365 struct svc_version nfsd_version4 = {
1363 .vs_vers = 4, 1366 .vs_vers = 4,
1364 .vs_nproc = 2, 1367 .vs_nproc = 2,
1365 .vs_proc = nfsd_procedures4, 1368 .vs_proc = nfsd_procedures4,
1366 .vs_dispatch = nfsd_dispatch, 1369 .vs_dispatch = nfsd_dispatch,
1367 .vs_xdrsize = NFS4_SVC_XDRSIZE, 1370 .vs_xdrsize = NFS4_SVC_XDRSIZE,
1368 }; 1371 };
1369 1372
1370 /* 1373 /*
1371 * Local variables: 1374 * Local variables:
1372 * c-basic-offset: 8 1375 * c-basic-offset: 8
1373 * End: 1376 * End:
1374 */ 1377 */
1375 1378