Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/fs/nfs/callback_xdr.c | |
3 | * | |
4 | * Copyright (C) 2004 Trond Myklebust | |
5 | * | |
6 | * NFSv4 callback encode/decode procedures | |
7 | */ | |
1da177e4 LT |
8 | #include <linux/kernel.h> |
9 | #include <linux/sunrpc/svc.h> | |
10 | #include <linux/nfs4.h> | |
11 | #include <linux/nfs_fs.h> | |
5a0e3ad6 | 12 | #include <linux/slab.h> |
c36fca52 | 13 | #include <linux/sunrpc/bc_xprt.h> |
4ce79717 | 14 | #include "nfs4_fs.h" |
1da177e4 | 15 | #include "callback.h" |
c36fca52 | 16 | #include "internal.h" |
1da177e4 LT |
17 | |
18 | #define CB_OP_TAGLEN_MAXSZ (512) | |
19 | #define CB_OP_HDR_RES_MAXSZ (2 + CB_OP_TAGLEN_MAXSZ) | |
20 | #define CB_OP_GETATTR_BITMAP_MAXSZ (4) | |
21 | #define CB_OP_GETATTR_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ | |
22 | CB_OP_GETATTR_BITMAP_MAXSZ + \ | |
23 | 2 + 2 + 3 + 3) | |
24 | #define CB_OP_RECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) | |
25 | ||
4aece6a1 | 26 | #if defined(CONFIG_NFS_V4_1) |
f2a62561 | 27 | #define CB_OP_LAYOUTRECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
1be5683b | 28 | #define CB_OP_DEVICENOTIFY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
4aece6a1 BH |
29 | #define CB_OP_SEQUENCE_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ |
30 | 4 + 1 + 3) | |
31f09607 | 31 | #define CB_OP_RECALLANY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
b9efa1b2 | 32 | #define CB_OP_RECALLSLOT_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
4aece6a1 BH |
33 | #endif /* CONFIG_NFS_V4_1 */ |
34 | ||
1da177e4 LT |
35 | #define NFSDBG_FACILITY NFSDBG_CALLBACK |
36 | ||
31d2b435 AA |
37 | /* Internal error code */ |
38 | #define NFS4ERR_RESOURCE_HDR 11050 | |
39 | ||
c36fca52 AA |
40 | typedef __be32 (*callback_process_op_t)(void *, void *, |
41 | struct cb_process_state *); | |
e6f684f6 AV |
42 | typedef __be32 (*callback_decode_arg_t)(struct svc_rqst *, struct xdr_stream *, void *); |
43 | typedef __be32 (*callback_encode_res_t)(struct svc_rqst *, struct xdr_stream *, void *); | |
1da177e4 LT |
44 | |
45 | ||
46 | struct callback_op { | |
47 | callback_process_op_t process_op; | |
48 | callback_decode_arg_t decode_args; | |
49 | callback_encode_res_t encode_res; | |
50 | long res_maxsize; | |
51 | }; | |
52 | ||
53 | static struct callback_op callback_ops[]; | |
54 | ||
7111c66e | 55 | static __be32 nfs4_callback_null(struct svc_rqst *rqstp, void *argp, void *resp) |
1da177e4 LT |
56 | { |
57 | return htonl(NFS4_OK); | |
58 | } | |
59 | ||
5704fdeb | 60 | static int nfs4_decode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
61 | { |
62 | return xdr_argsize_check(rqstp, p); | |
63 | } | |
64 | ||
5704fdeb | 65 | static int nfs4_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
66 | { |
67 | return xdr_ressize_check(rqstp, p); | |
68 | } | |
69 | ||
5704fdeb | 70 | static __be32 *read_buf(struct xdr_stream *xdr, int nbytes) |
1da177e4 | 71 | { |
5704fdeb | 72 | __be32 *p; |
1da177e4 LT |
73 | |
74 | p = xdr_inline_decode(xdr, nbytes); | |
75 | if (unlikely(p == NULL)) | |
76 | printk(KERN_WARNING "NFSv4 callback reply buffer overflowed!\n"); | |
77 | return p; | |
78 | } | |
79 | ||
e6f684f6 | 80 | static __be32 decode_string(struct xdr_stream *xdr, unsigned int *len, const char **str) |
1da177e4 | 81 | { |
5704fdeb | 82 | __be32 *p; |
1da177e4 LT |
83 | |
84 | p = read_buf(xdr, 4); | |
85 | if (unlikely(p == NULL)) | |
86 | return htonl(NFS4ERR_RESOURCE); | |
87 | *len = ntohl(*p); | |
88 | ||
89 | if (*len != 0) { | |
90 | p = read_buf(xdr, *len); | |
91 | if (unlikely(p == NULL)) | |
92 | return htonl(NFS4ERR_RESOURCE); | |
93 | *str = (const char *)p; | |
94 | } else | |
95 | *str = NULL; | |
96 | ||
97 | return 0; | |
98 | } | |
99 | ||
e6f684f6 | 100 | static __be32 decode_fh(struct xdr_stream *xdr, struct nfs_fh *fh) |
1da177e4 | 101 | { |
5704fdeb | 102 | __be32 *p; |
1da177e4 LT |
103 | |
104 | p = read_buf(xdr, 4); | |
105 | if (unlikely(p == NULL)) | |
106 | return htonl(NFS4ERR_RESOURCE); | |
107 | fh->size = ntohl(*p); | |
108 | if (fh->size > NFS4_FHSIZE) | |
109 | return htonl(NFS4ERR_BADHANDLE); | |
110 | p = read_buf(xdr, fh->size); | |
111 | if (unlikely(p == NULL)) | |
112 | return htonl(NFS4ERR_RESOURCE); | |
113 | memcpy(&fh->data[0], p, fh->size); | |
114 | memset(&fh->data[fh->size], 0, sizeof(fh->data) - fh->size); | |
115 | return 0; | |
116 | } | |
117 | ||
e6f684f6 | 118 | static __be32 decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) |
1da177e4 | 119 | { |
5704fdeb | 120 | __be32 *p; |
1da177e4 LT |
121 | unsigned int attrlen; |
122 | ||
123 | p = read_buf(xdr, 4); | |
124 | if (unlikely(p == NULL)) | |
125 | return htonl(NFS4ERR_RESOURCE); | |
126 | attrlen = ntohl(*p); | |
127 | p = read_buf(xdr, attrlen << 2); | |
128 | if (unlikely(p == NULL)) | |
129 | return htonl(NFS4ERR_RESOURCE); | |
130 | if (likely(attrlen > 0)) | |
131 | bitmap[0] = ntohl(*p++); | |
132 | if (attrlen > 1) | |
133 | bitmap[1] = ntohl(*p); | |
134 | return 0; | |
135 | } | |
136 | ||
e6f684f6 | 137 | static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) |
1da177e4 | 138 | { |
5704fdeb | 139 | __be32 *p; |
1da177e4 LT |
140 | |
141 | p = read_buf(xdr, 16); | |
142 | if (unlikely(p == NULL)) | |
143 | return htonl(NFS4ERR_RESOURCE); | |
144 | memcpy(stateid->data, p, 16); | |
145 | return 0; | |
146 | } | |
147 | ||
e6f684f6 | 148 | static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound_hdr_arg *hdr) |
1da177e4 | 149 | { |
5704fdeb | 150 | __be32 *p; |
e6f684f6 | 151 | __be32 status; |
1da177e4 LT |
152 | |
153 | status = decode_string(xdr, &hdr->taglen, &hdr->tag); | |
154 | if (unlikely(status != 0)) | |
155 | return status; | |
156 | /* We do not like overly long tags! */ | |
5cce428d | 157 | if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) { |
1da177e4 | 158 | printk("NFSv4 CALLBACK %s: client sent tag of length %u\n", |
3110ff80 | 159 | __func__, hdr->taglen); |
1da177e4 LT |
160 | return htonl(NFS4ERR_RESOURCE); |
161 | } | |
162 | p = read_buf(xdr, 12); | |
163 | if (unlikely(p == NULL)) | |
164 | return htonl(NFS4ERR_RESOURCE); | |
b8f2ef84 | 165 | hdr->minorversion = ntohl(*p++); |
48a9e2d2 BH |
166 | /* Check minor version is zero or one. */ |
167 | if (hdr->minorversion <= 1) { | |
c36fca52 | 168 | hdr->cb_ident = ntohl(*p++); /* ignored by v4.1 */ |
48a9e2d2 | 169 | } else { |
b8f2ef84 BH |
170 | printk(KERN_WARNING "%s: NFSv4 server callback with " |
171 | "illegal minor version %u!\n", | |
172 | __func__, hdr->minorversion); | |
1da177e4 LT |
173 | return htonl(NFS4ERR_MINOR_VERS_MISMATCH); |
174 | } | |
1da177e4 | 175 | hdr->nops = ntohl(*p); |
b8f2ef84 BH |
176 | dprintk("%s: minorversion %d nops %d\n", __func__, |
177 | hdr->minorversion, hdr->nops); | |
1da177e4 LT |
178 | return 0; |
179 | } | |
180 | ||
e6f684f6 | 181 | static __be32 decode_op_hdr(struct xdr_stream *xdr, unsigned int *op) |
1da177e4 | 182 | { |
5704fdeb | 183 | __be32 *p; |
1da177e4 LT |
184 | p = read_buf(xdr, 4); |
185 | if (unlikely(p == NULL)) | |
31d2b435 | 186 | return htonl(NFS4ERR_RESOURCE_HDR); |
1da177e4 LT |
187 | *op = ntohl(*p); |
188 | return 0; | |
189 | } | |
190 | ||
e6f684f6 | 191 | static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_getattrargs *args) |
1da177e4 | 192 | { |
e6f684f6 | 193 | __be32 status; |
1da177e4 LT |
194 | |
195 | status = decode_fh(xdr, &args->fh); | |
196 | if (unlikely(status != 0)) | |
197 | goto out; | |
671beed7 | 198 | args->addr = svc_addr(rqstp); |
1da177e4 LT |
199 | status = decode_bitmap(xdr, args->bitmap); |
200 | out: | |
3110ff80 | 201 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
1da177e4 LT |
202 | return status; |
203 | } | |
204 | ||
e6f684f6 | 205 | static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_recallargs *args) |
1da177e4 | 206 | { |
5704fdeb | 207 | __be32 *p; |
e6f684f6 | 208 | __be32 status; |
1da177e4 | 209 | |
c1d35866 | 210 | args->addr = svc_addr(rqstp); |
1da177e4 LT |
211 | status = decode_stateid(xdr, &args->stateid); |
212 | if (unlikely(status != 0)) | |
213 | goto out; | |
214 | p = read_buf(xdr, 4); | |
215 | if (unlikely(p == NULL)) { | |
216 | status = htonl(NFS4ERR_RESOURCE); | |
217 | goto out; | |
218 | } | |
219 | args->truncate = ntohl(*p); | |
220 | status = decode_fh(xdr, &args->fh); | |
221 | out: | |
3110ff80 | 222 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
3873bc50 | 223 | return status; |
1da177e4 LT |
224 | } |
225 | ||
4aece6a1 BH |
226 | #if defined(CONFIG_NFS_V4_1) |
227 | ||
f2a62561 FI |
228 | static __be32 decode_layoutrecall_args(struct svc_rqst *rqstp, |
229 | struct xdr_stream *xdr, | |
230 | struct cb_layoutrecallargs *args) | |
231 | { | |
232 | __be32 *p; | |
233 | __be32 status = 0; | |
234 | uint32_t iomode; | |
235 | ||
236 | args->cbl_addr = svc_addr(rqstp); | |
237 | p = read_buf(xdr, 4 * sizeof(uint32_t)); | |
238 | if (unlikely(p == NULL)) { | |
239 | status = htonl(NFS4ERR_BADXDR); | |
240 | goto out; | |
241 | } | |
242 | ||
243 | args->cbl_layout_type = ntohl(*p++); | |
244 | /* Depite the spec's xdr, iomode really belongs in the FILE switch, | |
25985edc | 245 | * as it is unusable and ignored with the other types. |
f2a62561 FI |
246 | */ |
247 | iomode = ntohl(*p++); | |
248 | args->cbl_layoutchanged = ntohl(*p++); | |
249 | args->cbl_recall_type = ntohl(*p++); | |
250 | ||
251 | if (args->cbl_recall_type == RETURN_FILE) { | |
252 | args->cbl_range.iomode = iomode; | |
253 | status = decode_fh(xdr, &args->cbl_fh); | |
254 | if (unlikely(status != 0)) | |
255 | goto out; | |
256 | ||
257 | p = read_buf(xdr, 2 * sizeof(uint64_t)); | |
258 | if (unlikely(p == NULL)) { | |
259 | status = htonl(NFS4ERR_BADXDR); | |
260 | goto out; | |
261 | } | |
262 | p = xdr_decode_hyper(p, &args->cbl_range.offset); | |
263 | p = xdr_decode_hyper(p, &args->cbl_range.length); | |
264 | status = decode_stateid(xdr, &args->cbl_stateid); | |
265 | if (unlikely(status != 0)) | |
266 | goto out; | |
267 | } else if (args->cbl_recall_type == RETURN_FSID) { | |
268 | p = read_buf(xdr, 2 * sizeof(uint64_t)); | |
269 | if (unlikely(p == NULL)) { | |
270 | status = htonl(NFS4ERR_BADXDR); | |
271 | goto out; | |
272 | } | |
273 | p = xdr_decode_hyper(p, &args->cbl_fsid.major); | |
274 | p = xdr_decode_hyper(p, &args->cbl_fsid.minor); | |
275 | } else if (args->cbl_recall_type != RETURN_ALL) { | |
276 | status = htonl(NFS4ERR_BADXDR); | |
277 | goto out; | |
278 | } | |
279 | dprintk("%s: ltype 0x%x iomode %d changed %d recall_type %d\n", | |
280 | __func__, | |
281 | args->cbl_layout_type, iomode, | |
282 | args->cbl_layoutchanged, args->cbl_recall_type); | |
283 | out: | |
284 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
285 | return status; | |
286 | } | |
287 | ||
1be5683b ME |
288 | static |
289 | __be32 decode_devicenotify_args(struct svc_rqst *rqstp, | |
290 | struct xdr_stream *xdr, | |
291 | struct cb_devicenotifyargs *args) | |
292 | { | |
293 | __be32 *p; | |
294 | __be32 status = 0; | |
295 | u32 tmp; | |
296 | int n, i; | |
297 | args->ndevs = 0; | |
298 | ||
299 | /* Num of device notifications */ | |
300 | p = read_buf(xdr, sizeof(uint32_t)); | |
301 | if (unlikely(p == NULL)) { | |
302 | status = htonl(NFS4ERR_BADXDR); | |
303 | goto out; | |
304 | } | |
305 | n = ntohl(*p++); | |
306 | if (n <= 0) | |
307 | goto out; | |
308 | ||
309 | args->devs = kmalloc(n * sizeof(*args->devs), GFP_KERNEL); | |
310 | if (!args->devs) { | |
311 | status = htonl(NFS4ERR_DELAY); | |
312 | goto out; | |
313 | } | |
314 | ||
315 | /* Decode each dev notification */ | |
316 | for (i = 0; i < n; i++) { | |
317 | struct cb_devicenotifyitem *dev = &args->devs[i]; | |
318 | ||
319 | p = read_buf(xdr, (4 * sizeof(uint32_t)) + NFS4_DEVICEID4_SIZE); | |
320 | if (unlikely(p == NULL)) { | |
321 | status = htonl(NFS4ERR_BADXDR); | |
322 | goto err; | |
323 | } | |
324 | ||
325 | tmp = ntohl(*p++); /* bitmap size */ | |
326 | if (tmp != 1) { | |
327 | status = htonl(NFS4ERR_INVAL); | |
328 | goto err; | |
329 | } | |
330 | dev->cbd_notify_type = ntohl(*p++); | |
331 | if (dev->cbd_notify_type != NOTIFY_DEVICEID4_CHANGE && | |
332 | dev->cbd_notify_type != NOTIFY_DEVICEID4_DELETE) { | |
333 | status = htonl(NFS4ERR_INVAL); | |
334 | goto err; | |
335 | } | |
336 | ||
337 | tmp = ntohl(*p++); /* opaque size */ | |
338 | if (((dev->cbd_notify_type == NOTIFY_DEVICEID4_CHANGE) && | |
339 | (tmp != NFS4_DEVICEID4_SIZE + 8)) || | |
340 | ((dev->cbd_notify_type == NOTIFY_DEVICEID4_DELETE) && | |
341 | (tmp != NFS4_DEVICEID4_SIZE + 4))) { | |
342 | status = htonl(NFS4ERR_INVAL); | |
343 | goto err; | |
344 | } | |
345 | dev->cbd_layout_type = ntohl(*p++); | |
346 | memcpy(dev->cbd_dev_id.data, p, NFS4_DEVICEID4_SIZE); | |
347 | p += XDR_QUADLEN(NFS4_DEVICEID4_SIZE); | |
348 | ||
349 | if (dev->cbd_layout_type == NOTIFY_DEVICEID4_CHANGE) { | |
350 | p = read_buf(xdr, sizeof(uint32_t)); | |
351 | if (unlikely(p == NULL)) { | |
352 | status = htonl(NFS4ERR_BADXDR); | |
353 | goto err; | |
354 | } | |
355 | dev->cbd_immediate = ntohl(*p++); | |
356 | } else { | |
357 | dev->cbd_immediate = 0; | |
358 | } | |
359 | ||
360 | args->ndevs++; | |
361 | ||
362 | dprintk("%s: type %d layout 0x%x immediate %d\n", | |
363 | __func__, dev->cbd_notify_type, dev->cbd_layout_type, | |
364 | dev->cbd_immediate); | |
365 | } | |
366 | out: | |
367 | dprintk("%s: status %d ndevs %d\n", | |
368 | __func__, ntohl(status), args->ndevs); | |
369 | return status; | |
370 | err: | |
371 | kfree(args->devs); | |
372 | goto out; | |
373 | } | |
374 | ||
9733f0d9 | 375 | static __be32 decode_sessionid(struct xdr_stream *xdr, |
4aece6a1 BH |
376 | struct nfs4_sessionid *sid) |
377 | { | |
9733f0d9 | 378 | __be32 *p; |
4aece6a1 BH |
379 | int len = NFS4_MAX_SESSIONID_LEN; |
380 | ||
381 | p = read_buf(xdr, len); | |
382 | if (unlikely(p == NULL)) | |
a419aef8 | 383 | return htonl(NFS4ERR_RESOURCE); |
4aece6a1 BH |
384 | |
385 | memcpy(sid->data, p, len); | |
386 | return 0; | |
387 | } | |
388 | ||
9733f0d9 | 389 | static __be32 decode_rc_list(struct xdr_stream *xdr, |
4aece6a1 BH |
390 | struct referring_call_list *rc_list) |
391 | { | |
9733f0d9 | 392 | __be32 *p; |
4aece6a1 | 393 | int i; |
9733f0d9 | 394 | __be32 status; |
4aece6a1 BH |
395 | |
396 | status = decode_sessionid(xdr, &rc_list->rcl_sessionid); | |
397 | if (status) | |
398 | goto out; | |
399 | ||
400 | status = htonl(NFS4ERR_RESOURCE); | |
401 | p = read_buf(xdr, sizeof(uint32_t)); | |
402 | if (unlikely(p == NULL)) | |
403 | goto out; | |
404 | ||
405 | rc_list->rcl_nrefcalls = ntohl(*p++); | |
406 | if (rc_list->rcl_nrefcalls) { | |
407 | p = read_buf(xdr, | |
408 | rc_list->rcl_nrefcalls * 2 * sizeof(uint32_t)); | |
409 | if (unlikely(p == NULL)) | |
410 | goto out; | |
411 | rc_list->rcl_refcalls = kmalloc(rc_list->rcl_nrefcalls * | |
412 | sizeof(*rc_list->rcl_refcalls), | |
413 | GFP_KERNEL); | |
414 | if (unlikely(rc_list->rcl_refcalls == NULL)) | |
415 | goto out; | |
416 | for (i = 0; i < rc_list->rcl_nrefcalls; i++) { | |
417 | rc_list->rcl_refcalls[i].rc_sequenceid = ntohl(*p++); | |
418 | rc_list->rcl_refcalls[i].rc_slotid = ntohl(*p++); | |
419 | } | |
420 | } | |
421 | status = 0; | |
422 | ||
423 | out: | |
424 | return status; | |
425 | } | |
426 | ||
9733f0d9 | 427 | static __be32 decode_cb_sequence_args(struct svc_rqst *rqstp, |
4aece6a1 BH |
428 | struct xdr_stream *xdr, |
429 | struct cb_sequenceargs *args) | |
430 | { | |
9733f0d9 | 431 | __be32 *p; |
4aece6a1 | 432 | int i; |
9733f0d9 | 433 | __be32 status; |
4aece6a1 BH |
434 | |
435 | status = decode_sessionid(xdr, &args->csa_sessionid); | |
436 | if (status) | |
437 | goto out; | |
438 | ||
439 | status = htonl(NFS4ERR_RESOURCE); | |
440 | p = read_buf(xdr, 5 * sizeof(uint32_t)); | |
441 | if (unlikely(p == NULL)) | |
442 | goto out; | |
443 | ||
65fc64e5 | 444 | args->csa_addr = svc_addr(rqstp); |
4aece6a1 BH |
445 | args->csa_sequenceid = ntohl(*p++); |
446 | args->csa_slotid = ntohl(*p++); | |
447 | args->csa_highestslotid = ntohl(*p++); | |
448 | args->csa_cachethis = ntohl(*p++); | |
449 | args->csa_nrclists = ntohl(*p++); | |
450 | args->csa_rclists = NULL; | |
451 | if (args->csa_nrclists) { | |
452 | args->csa_rclists = kmalloc(args->csa_nrclists * | |
453 | sizeof(*args->csa_rclists), | |
454 | GFP_KERNEL); | |
455 | if (unlikely(args->csa_rclists == NULL)) | |
456 | goto out; | |
457 | ||
458 | for (i = 0; i < args->csa_nrclists; i++) { | |
459 | status = decode_rc_list(xdr, &args->csa_rclists[i]); | |
460 | if (status) | |
461 | goto out_free; | |
462 | } | |
463 | } | |
464 | status = 0; | |
465 | ||
466 | dprintk("%s: sessionid %x:%x:%x:%x sequenceid %u slotid %u " | |
467 | "highestslotid %u cachethis %d nrclists %u\n", | |
468 | __func__, | |
469 | ((u32 *)&args->csa_sessionid)[0], | |
470 | ((u32 *)&args->csa_sessionid)[1], | |
471 | ((u32 *)&args->csa_sessionid)[2], | |
472 | ((u32 *)&args->csa_sessionid)[3], | |
473 | args->csa_sequenceid, args->csa_slotid, | |
474 | args->csa_highestslotid, args->csa_cachethis, | |
475 | args->csa_nrclists); | |
476 | out: | |
477 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
478 | return status; | |
479 | ||
480 | out_free: | |
481 | for (i = 0; i < args->csa_nrclists; i++) | |
482 | kfree(args->csa_rclists[i].rcl_refcalls); | |
483 | kfree(args->csa_rclists); | |
484 | goto out; | |
485 | } | |
486 | ||
9733f0d9 | 487 | static __be32 decode_recallany_args(struct svc_rqst *rqstp, |
31f09607 AB |
488 | struct xdr_stream *xdr, |
489 | struct cb_recallanyargs *args) | |
490 | { | |
d743c3c9 PT |
491 | uint32_t bitmap[2]; |
492 | __be32 *p, status; | |
31f09607 AB |
493 | |
494 | args->craa_addr = svc_addr(rqstp); | |
495 | p = read_buf(xdr, 4); | |
496 | if (unlikely(p == NULL)) | |
497 | return htonl(NFS4ERR_BADXDR); | |
498 | args->craa_objs_to_keep = ntohl(*p++); | |
d743c3c9 PT |
499 | status = decode_bitmap(xdr, bitmap); |
500 | if (unlikely(status)) | |
501 | return status; | |
502 | args->craa_type_mask = bitmap[0]; | |
31f09607 AB |
503 | |
504 | return 0; | |
505 | } | |
506 | ||
9733f0d9 | 507 | static __be32 decode_recallslot_args(struct svc_rqst *rqstp, |
b9efa1b2 AA |
508 | struct xdr_stream *xdr, |
509 | struct cb_recallslotargs *args) | |
510 | { | |
511 | __be32 *p; | |
512 | ||
513 | args->crsa_addr = svc_addr(rqstp); | |
514 | p = read_buf(xdr, 4); | |
515 | if (unlikely(p == NULL)) | |
516 | return htonl(NFS4ERR_BADXDR); | |
517 | args->crsa_target_max_slots = ntohl(*p++); | |
518 | return 0; | |
519 | } | |
520 | ||
4aece6a1 BH |
521 | #endif /* CONFIG_NFS_V4_1 */ |
522 | ||
e6f684f6 | 523 | static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) |
1da177e4 | 524 | { |
5704fdeb | 525 | __be32 *p; |
1da177e4 LT |
526 | |
527 | p = xdr_reserve_space(xdr, 4 + len); | |
528 | if (unlikely(p == NULL)) | |
529 | return htonl(NFS4ERR_RESOURCE); | |
530 | xdr_encode_opaque(p, str, len); | |
531 | return 0; | |
532 | } | |
533 | ||
534 | #define CB_SUPPORTED_ATTR0 (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) | |
535 | #define CB_SUPPORTED_ATTR1 (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) | |
5704fdeb | 536 | static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, __be32 **savep) |
1da177e4 | 537 | { |
5704fdeb AV |
538 | __be32 bm[2]; |
539 | __be32 *p; | |
1da177e4 LT |
540 | |
541 | bm[0] = htonl(bitmap[0] & CB_SUPPORTED_ATTR0); | |
542 | bm[1] = htonl(bitmap[1] & CB_SUPPORTED_ATTR1); | |
543 | if (bm[1] != 0) { | |
544 | p = xdr_reserve_space(xdr, 16); | |
545 | if (unlikely(p == NULL)) | |
546 | return htonl(NFS4ERR_RESOURCE); | |
547 | *p++ = htonl(2); | |
548 | *p++ = bm[0]; | |
549 | *p++ = bm[1]; | |
550 | } else if (bm[0] != 0) { | |
551 | p = xdr_reserve_space(xdr, 12); | |
552 | if (unlikely(p == NULL)) | |
553 | return htonl(NFS4ERR_RESOURCE); | |
554 | *p++ = htonl(1); | |
555 | *p++ = bm[0]; | |
556 | } else { | |
557 | p = xdr_reserve_space(xdr, 8); | |
558 | if (unlikely(p == NULL)) | |
559 | return htonl(NFS4ERR_RESOURCE); | |
560 | *p++ = htonl(0); | |
561 | } | |
562 | *savep = p; | |
563 | return 0; | |
564 | } | |
565 | ||
e6f684f6 | 566 | static __be32 encode_attr_change(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t change) |
1da177e4 | 567 | { |
5704fdeb | 568 | __be32 *p; |
1da177e4 LT |
569 | |
570 | if (!(bitmap[0] & FATTR4_WORD0_CHANGE)) | |
571 | return 0; | |
572 | p = xdr_reserve_space(xdr, 8); | |
90dc7d27 | 573 | if (unlikely(!p)) |
1da177e4 LT |
574 | return htonl(NFS4ERR_RESOURCE); |
575 | p = xdr_encode_hyper(p, change); | |
576 | return 0; | |
577 | } | |
578 | ||
e6f684f6 | 579 | static __be32 encode_attr_size(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t size) |
1da177e4 | 580 | { |
5704fdeb | 581 | __be32 *p; |
1da177e4 LT |
582 | |
583 | if (!(bitmap[0] & FATTR4_WORD0_SIZE)) | |
584 | return 0; | |
585 | p = xdr_reserve_space(xdr, 8); | |
90dc7d27 | 586 | if (unlikely(!p)) |
1da177e4 LT |
587 | return htonl(NFS4ERR_RESOURCE); |
588 | p = xdr_encode_hyper(p, size); | |
589 | return 0; | |
590 | } | |
591 | ||
e6f684f6 | 592 | static __be32 encode_attr_time(struct xdr_stream *xdr, const struct timespec *time) |
1da177e4 | 593 | { |
5704fdeb | 594 | __be32 *p; |
1da177e4 LT |
595 | |
596 | p = xdr_reserve_space(xdr, 12); | |
90dc7d27 | 597 | if (unlikely(!p)) |
1da177e4 LT |
598 | return htonl(NFS4ERR_RESOURCE); |
599 | p = xdr_encode_hyper(p, time->tv_sec); | |
600 | *p = htonl(time->tv_nsec); | |
601 | return 0; | |
602 | } | |
603 | ||
e6f684f6 | 604 | static __be32 encode_attr_ctime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) |
1da177e4 LT |
605 | { |
606 | if (!(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) | |
607 | return 0; | |
608 | return encode_attr_time(xdr,time); | |
609 | } | |
610 | ||
e6f684f6 | 611 | static __be32 encode_attr_mtime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) |
1da177e4 LT |
612 | { |
613 | if (!(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) | |
614 | return 0; | |
615 | return encode_attr_time(xdr,time); | |
616 | } | |
617 | ||
e6f684f6 | 618 | static __be32 encode_compound_hdr_res(struct xdr_stream *xdr, struct cb_compound_hdr_res *hdr) |
1da177e4 | 619 | { |
e6f684f6 | 620 | __be32 status; |
1da177e4 LT |
621 | |
622 | hdr->status = xdr_reserve_space(xdr, 4); | |
623 | if (unlikely(hdr->status == NULL)) | |
624 | return htonl(NFS4ERR_RESOURCE); | |
625 | status = encode_string(xdr, hdr->taglen, hdr->tag); | |
626 | if (unlikely(status != 0)) | |
627 | return status; | |
628 | hdr->nops = xdr_reserve_space(xdr, 4); | |
629 | if (unlikely(hdr->nops == NULL)) | |
630 | return htonl(NFS4ERR_RESOURCE); | |
631 | return 0; | |
632 | } | |
633 | ||
e6f684f6 | 634 | static __be32 encode_op_hdr(struct xdr_stream *xdr, uint32_t op, __be32 res) |
1da177e4 | 635 | { |
5704fdeb | 636 | __be32 *p; |
1da177e4 LT |
637 | |
638 | p = xdr_reserve_space(xdr, 8); | |
639 | if (unlikely(p == NULL)) | |
31d2b435 | 640 | return htonl(NFS4ERR_RESOURCE_HDR); |
1da177e4 LT |
641 | *p++ = htonl(op); |
642 | *p = res; | |
643 | return 0; | |
644 | } | |
645 | ||
e6f684f6 | 646 | static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, const struct cb_getattrres *res) |
1da177e4 | 647 | { |
5704fdeb | 648 | __be32 *savep = NULL; |
e6f684f6 | 649 | __be32 status = res->status; |
1da177e4 LT |
650 | |
651 | if (unlikely(status != 0)) | |
652 | goto out; | |
653 | status = encode_attr_bitmap(xdr, res->bitmap, &savep); | |
654 | if (unlikely(status != 0)) | |
655 | goto out; | |
656 | status = encode_attr_change(xdr, res->bitmap, res->change_attr); | |
657 | if (unlikely(status != 0)) | |
658 | goto out; | |
659 | status = encode_attr_size(xdr, res->bitmap, res->size); | |
660 | if (unlikely(status != 0)) | |
661 | goto out; | |
662 | status = encode_attr_ctime(xdr, res->bitmap, &res->ctime); | |
663 | if (unlikely(status != 0)) | |
664 | goto out; | |
665 | status = encode_attr_mtime(xdr, res->bitmap, &res->mtime); | |
666 | *savep = htonl((unsigned int)((char *)xdr->p - (char *)(savep+1))); | |
667 | out: | |
3110ff80 | 668 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
1da177e4 LT |
669 | return status; |
670 | } | |
671 | ||
34bc47c9 BH |
672 | #if defined(CONFIG_NFS_V4_1) |
673 | ||
9733f0d9 | 674 | static __be32 encode_sessionid(struct xdr_stream *xdr, |
4aece6a1 BH |
675 | const struct nfs4_sessionid *sid) |
676 | { | |
9733f0d9 | 677 | __be32 *p; |
4aece6a1 BH |
678 | int len = NFS4_MAX_SESSIONID_LEN; |
679 | ||
680 | p = xdr_reserve_space(xdr, len); | |
681 | if (unlikely(p == NULL)) | |
682 | return htonl(NFS4ERR_RESOURCE); | |
683 | ||
684 | memcpy(p, sid, len); | |
685 | return 0; | |
686 | } | |
687 | ||
9733f0d9 | 688 | static __be32 encode_cb_sequence_res(struct svc_rqst *rqstp, |
4aece6a1 BH |
689 | struct xdr_stream *xdr, |
690 | const struct cb_sequenceres *res) | |
691 | { | |
9733f0d9 | 692 | __be32 *p; |
4aece6a1 BH |
693 | unsigned status = res->csr_status; |
694 | ||
695 | if (unlikely(status != 0)) | |
696 | goto out; | |
697 | ||
698 | encode_sessionid(xdr, &res->csr_sessionid); | |
699 | ||
700 | p = xdr_reserve_space(xdr, 4 * sizeof(uint32_t)); | |
701 | if (unlikely(p == NULL)) | |
702 | return htonl(NFS4ERR_RESOURCE); | |
703 | ||
704 | *p++ = htonl(res->csr_sequenceid); | |
705 | *p++ = htonl(res->csr_slotid); | |
706 | *p++ = htonl(res->csr_highestslotid); | |
707 | *p++ = htonl(res->csr_target_highestslotid); | |
708 | out: | |
709 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
710 | return status; | |
711 | } | |
712 | ||
34bc47c9 BH |
713 | static __be32 |
714 | preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) | |
715 | { | |
281fe15d BH |
716 | if (op_nr == OP_CB_SEQUENCE) { |
717 | if (nop != 0) | |
718 | return htonl(NFS4ERR_SEQUENCE_POS); | |
719 | } else { | |
720 | if (nop == 0) | |
721 | return htonl(NFS4ERR_OP_NOT_IN_SESSION); | |
722 | } | |
723 | ||
34bc47c9 BH |
724 | switch (op_nr) { |
725 | case OP_CB_GETATTR: | |
726 | case OP_CB_RECALL: | |
4aece6a1 | 727 | case OP_CB_SEQUENCE: |
31f09607 | 728 | case OP_CB_RECALL_ANY: |
b9efa1b2 | 729 | case OP_CB_RECALL_SLOT: |
f2a62561 | 730 | case OP_CB_LAYOUTRECALL: |
1be5683b | 731 | case OP_CB_NOTIFY_DEVICEID: |
34bc47c9 BH |
732 | *op = &callback_ops[op_nr]; |
733 | break; | |
734 | ||
34bc47c9 BH |
735 | case OP_CB_NOTIFY: |
736 | case OP_CB_PUSH_DELEG: | |
34bc47c9 | 737 | case OP_CB_RECALLABLE_OBJ_AVAIL: |
34bc47c9 BH |
738 | case OP_CB_WANTS_CANCELLED: |
739 | case OP_CB_NOTIFY_LOCK: | |
740 | return htonl(NFS4ERR_NOTSUPP); | |
741 | ||
742 | default: | |
743 | return htonl(NFS4ERR_OP_ILLEGAL); | |
744 | } | |
745 | ||
746 | return htonl(NFS_OK); | |
747 | } | |
748 | ||
42acd021 AA |
749 | static void nfs4_callback_free_slot(struct nfs4_session *session) |
750 | { | |
751 | struct nfs4_slot_table *tbl = &session->bc_slot_table; | |
752 | ||
753 | spin_lock(&tbl->slot_tbl_lock); | |
754 | /* | |
755 | * Let the state manager know callback processing done. | |
756 | * A single slot, so highest used slotid is either 0 or -1 | |
757 | */ | |
55a67399 | 758 | tbl->highest_used_slotid = -1; |
42acd021 AA |
759 | nfs4_check_drain_bc_complete(session); |
760 | spin_unlock(&tbl->slot_tbl_lock); | |
761 | } | |
762 | ||
55a67399 | 763 | static void nfs4_cb_free_slot(struct cb_process_state *cps) |
42acd021 | 764 | { |
55a67399 TM |
765 | if (cps->slotid != -1) |
766 | nfs4_callback_free_slot(cps->clp->cl_session); | |
42acd021 AA |
767 | } |
768 | ||
34bc47c9 BH |
769 | #else /* CONFIG_NFS_V4_1 */ |
770 | ||
771 | static __be32 | |
772 | preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) | |
773 | { | |
774 | return htonl(NFS4ERR_MINOR_VERS_MISMATCH); | |
775 | } | |
776 | ||
55a67399 | 777 | static void nfs4_cb_free_slot(struct cb_process_state *cps) |
42acd021 AA |
778 | { |
779 | } | |
34bc47c9 BH |
780 | #endif /* CONFIG_NFS_V4_1 */ |
781 | ||
782 | static __be32 | |
783 | preprocess_nfs4_op(unsigned int op_nr, struct callback_op **op) | |
784 | { | |
785 | switch (op_nr) { | |
786 | case OP_CB_GETATTR: | |
787 | case OP_CB_RECALL: | |
788 | *op = &callback_ops[op_nr]; | |
789 | break; | |
790 | default: | |
791 | return htonl(NFS4ERR_OP_ILLEGAL); | |
792 | } | |
793 | ||
794 | return htonl(NFS_OK); | |
795 | } | |
796 | ||
797 | static __be32 process_op(uint32_t minorversion, int nop, | |
798 | struct svc_rqst *rqstp, | |
1da177e4 | 799 | struct xdr_stream *xdr_in, void *argp, |
c36fca52 AA |
800 | struct xdr_stream *xdr_out, void *resp, |
801 | struct cb_process_state *cps) | |
1da177e4 | 802 | { |
a162a6b8 | 803 | struct callback_op *op = &callback_ops[0]; |
31d2b435 | 804 | unsigned int op_nr; |
34bc47c9 | 805 | __be32 status; |
1da177e4 | 806 | long maxlen; |
e6f684f6 | 807 | __be32 res; |
1da177e4 | 808 | |
3110ff80 | 809 | dprintk("%s: start\n", __func__); |
1da177e4 | 810 | status = decode_op_hdr(xdr_in, &op_nr); |
31d2b435 AA |
811 | if (unlikely(status)) |
812 | return status; | |
1da177e4 | 813 | |
34bc47c9 BH |
814 | dprintk("%s: minorversion=%d nop=%d op_nr=%u\n", |
815 | __func__, minorversion, nop, op_nr); | |
816 | ||
817 | status = minorversion ? preprocess_nfs41_op(nop, op_nr, &op) : | |
818 | preprocess_nfs4_op(op_nr, &op); | |
819 | if (status == htonl(NFS4ERR_OP_ILLEGAL)) | |
820 | op_nr = OP_CB_ILLEGAL; | |
b92b3019 AA |
821 | if (status) |
822 | goto encode_hdr; | |
31d2b435 | 823 | |
c36fca52 AA |
824 | if (cps->drc_status) { |
825 | status = cps->drc_status; | |
4911096f AA |
826 | goto encode_hdr; |
827 | } | |
828 | ||
1da177e4 LT |
829 | maxlen = xdr_out->end - xdr_out->p; |
830 | if (maxlen > 0 && maxlen < PAGE_SIZE) { | |
e95e60da AA |
831 | status = op->decode_args(rqstp, xdr_in, argp); |
832 | if (likely(status == 0)) | |
c36fca52 | 833 | status = op->process_op(argp, resp, cps); |
1da177e4 LT |
834 | } else |
835 | status = htonl(NFS4ERR_RESOURCE); | |
836 | ||
b92b3019 | 837 | encode_hdr: |
1da177e4 | 838 | res = encode_op_hdr(xdr_out, op_nr, status); |
31d2b435 AA |
839 | if (unlikely(res)) |
840 | return res; | |
1da177e4 LT |
841 | if (op->encode_res != NULL && status == 0) |
842 | status = op->encode_res(rqstp, xdr_out, resp); | |
3110ff80 | 843 | dprintk("%s: done, status = %d\n", __func__, ntohl(status)); |
1da177e4 LT |
844 | return status; |
845 | } | |
846 | ||
847 | /* | |
848 | * Decode, process and encode a COMPOUND | |
849 | */ | |
7111c66e | 850 | static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *resp) |
1da177e4 | 851 | { |
3a6258e1 TM |
852 | struct cb_compound_hdr_arg hdr_arg = { 0 }; |
853 | struct cb_compound_hdr_res hdr_res = { NULL }; | |
1da177e4 | 854 | struct xdr_stream xdr_in, xdr_out; |
c36fca52 AA |
855 | __be32 *p, status; |
856 | struct cb_process_state cps = { | |
857 | .drc_status = 0, | |
858 | .clp = NULL, | |
55a67399 | 859 | .slotid = -1, |
c36fca52 | 860 | }; |
3a6258e1 | 861 | unsigned int nops = 0; |
1da177e4 | 862 | |
3110ff80 | 863 | dprintk("%s: start\n", __func__); |
1da177e4 LT |
864 | |
865 | xdr_init_decode(&xdr_in, &rqstp->rq_arg, rqstp->rq_arg.head[0].iov_base); | |
866 | ||
5704fdeb | 867 | p = (__be32*)((char *)rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len); |
1da177e4 LT |
868 | xdr_init_encode(&xdr_out, &rqstp->rq_res, p); |
869 | ||
3a6258e1 TM |
870 | status = decode_compound_hdr_arg(&xdr_in, &hdr_arg); |
871 | if (status == __constant_htonl(NFS4ERR_RESOURCE)) | |
872 | return rpc_garbage_args; | |
873 | ||
c36fca52 AA |
874 | if (hdr_arg.minorversion == 0) { |
875 | cps.clp = nfs4_find_client_ident(hdr_arg.cb_ident); | |
778be232 | 876 | if (!cps.clp || !check_gss_callback_principal(cps.clp, rqstp)) |
c36fca52 | 877 | return rpc_drop_reply; |
778be232 | 878 | } |
c36fca52 | 879 | |
1da177e4 LT |
880 | hdr_res.taglen = hdr_arg.taglen; |
881 | hdr_res.tag = hdr_arg.tag; | |
3a6258e1 TM |
882 | if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0) |
883 | return rpc_system_err; | |
1da177e4 | 884 | |
3a6258e1 | 885 | while (status == 0 && nops != hdr_arg.nops) { |
4911096f | 886 | status = process_op(hdr_arg.minorversion, nops, rqstp, |
c36fca52 | 887 | &xdr_in, argp, &xdr_out, resp, &cps); |
1da177e4 LT |
888 | nops++; |
889 | } | |
3a6258e1 | 890 | |
31d2b435 AA |
891 | /* Buffer overflow in decode_ops_hdr or encode_ops_hdr. Return |
892 | * resource error in cb_compound status without returning op */ | |
893 | if (unlikely(status == htonl(NFS4ERR_RESOURCE_HDR))) { | |
894 | status = htonl(NFS4ERR_RESOURCE); | |
895 | nops--; | |
896 | } | |
897 | ||
1da177e4 LT |
898 | *hdr_res.status = status; |
899 | *hdr_res.nops = htonl(nops); | |
55a67399 | 900 | nfs4_cb_free_slot(&cps); |
c36fca52 | 901 | nfs_put_client(cps.clp); |
3110ff80 | 902 | dprintk("%s: done, status = %u\n", __func__, ntohl(status)); |
1da177e4 LT |
903 | return rpc_success; |
904 | } | |
905 | ||
906 | /* | |
907 | * Define NFS4 callback COMPOUND ops. | |
908 | */ | |
909 | static struct callback_op callback_ops[] = { | |
910 | [0] = { | |
911 | .res_maxsize = CB_OP_HDR_RES_MAXSZ, | |
912 | }, | |
913 | [OP_CB_GETATTR] = { | |
914 | .process_op = (callback_process_op_t)nfs4_callback_getattr, | |
915 | .decode_args = (callback_decode_arg_t)decode_getattr_args, | |
916 | .encode_res = (callback_encode_res_t)encode_getattr_res, | |
917 | .res_maxsize = CB_OP_GETATTR_RES_MAXSZ, | |
918 | }, | |
919 | [OP_CB_RECALL] = { | |
920 | .process_op = (callback_process_op_t)nfs4_callback_recall, | |
921 | .decode_args = (callback_decode_arg_t)decode_recall_args, | |
922 | .res_maxsize = CB_OP_RECALL_RES_MAXSZ, | |
4aece6a1 BH |
923 | }, |
924 | #if defined(CONFIG_NFS_V4_1) | |
f2a62561 FI |
925 | [OP_CB_LAYOUTRECALL] = { |
926 | .process_op = (callback_process_op_t)nfs4_callback_layoutrecall, | |
927 | .decode_args = | |
928 | (callback_decode_arg_t)decode_layoutrecall_args, | |
929 | .res_maxsize = CB_OP_LAYOUTRECALL_RES_MAXSZ, | |
930 | }, | |
1be5683b ME |
931 | [OP_CB_NOTIFY_DEVICEID] = { |
932 | .process_op = (callback_process_op_t)nfs4_callback_devicenotify, | |
933 | .decode_args = | |
934 | (callback_decode_arg_t)decode_devicenotify_args, | |
935 | .res_maxsize = CB_OP_DEVICENOTIFY_RES_MAXSZ, | |
936 | }, | |
4aece6a1 BH |
937 | [OP_CB_SEQUENCE] = { |
938 | .process_op = (callback_process_op_t)nfs4_callback_sequence, | |
939 | .decode_args = (callback_decode_arg_t)decode_cb_sequence_args, | |
940 | .encode_res = (callback_encode_res_t)encode_cb_sequence_res, | |
941 | .res_maxsize = CB_OP_SEQUENCE_RES_MAXSZ, | |
942 | }, | |
31f09607 AB |
943 | [OP_CB_RECALL_ANY] = { |
944 | .process_op = (callback_process_op_t)nfs4_callback_recallany, | |
945 | .decode_args = (callback_decode_arg_t)decode_recallany_args, | |
946 | .res_maxsize = CB_OP_RECALLANY_RES_MAXSZ, | |
947 | }, | |
b9efa1b2 AA |
948 | [OP_CB_RECALL_SLOT] = { |
949 | .process_op = (callback_process_op_t)nfs4_callback_recallslot, | |
950 | .decode_args = (callback_decode_arg_t)decode_recallslot_args, | |
951 | .res_maxsize = CB_OP_RECALLSLOT_RES_MAXSZ, | |
952 | }, | |
4aece6a1 | 953 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 LT |
954 | }; |
955 | ||
956 | /* | |
957 | * Define NFS4 callback procedures | |
958 | */ | |
959 | static struct svc_procedure nfs4_callback_procedures1[] = { | |
960 | [CB_NULL] = { | |
961 | .pc_func = nfs4_callback_null, | |
962 | .pc_decode = (kxdrproc_t)nfs4_decode_void, | |
963 | .pc_encode = (kxdrproc_t)nfs4_encode_void, | |
964 | .pc_xdrressize = 1, | |
965 | }, | |
966 | [CB_COMPOUND] = { | |
967 | .pc_func = nfs4_callback_compound, | |
968 | .pc_encode = (kxdrproc_t)nfs4_encode_void, | |
969 | .pc_argsize = 256, | |
970 | .pc_ressize = 256, | |
971 | .pc_xdrressize = NFS4_CALLBACK_BUFSIZE, | |
972 | } | |
973 | }; | |
974 | ||
975 | struct svc_version nfs4_callback_version1 = { | |
976 | .vs_vers = 1, | |
977 | .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), | |
978 | .vs_proc = nfs4_callback_procedures1, | |
979 | .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, | |
980 | .vs_dispatch = NULL, | |
49697ee7 | 981 | .vs_hidden = 1, |
1da177e4 LT |
982 | }; |
983 | ||
07bccc2d AB |
984 | struct svc_version nfs4_callback_version4 = { |
985 | .vs_vers = 4, | |
986 | .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), | |
987 | .vs_proc = nfs4_callback_procedures1, | |
988 | .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, | |
989 | .vs_dispatch = NULL, | |
6070295e | 990 | .vs_hidden = 1, |
07bccc2d | 991 | }; |