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Commit | Line | Data |
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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> | |
9a3ba432 TM |
12 | #include <linux/ratelimit.h> |
13 | #include <linux/printk.h> | |
5a0e3ad6 | 14 | #include <linux/slab.h> |
c36fca52 | 15 | #include <linux/sunrpc/bc_xprt.h> |
4ce79717 | 16 | #include "nfs4_fs.h" |
1da177e4 | 17 | #include "callback.h" |
c36fca52 | 18 | #include "internal.h" |
76e697ba | 19 | #include "nfs4session.h" |
1da177e4 LT |
20 | |
21 | #define CB_OP_TAGLEN_MAXSZ (512) | |
22 | #define CB_OP_HDR_RES_MAXSZ (2 + CB_OP_TAGLEN_MAXSZ) | |
23 | #define CB_OP_GETATTR_BITMAP_MAXSZ (4) | |
24 | #define CB_OP_GETATTR_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ | |
25 | CB_OP_GETATTR_BITMAP_MAXSZ + \ | |
26 | 2 + 2 + 3 + 3) | |
27 | #define CB_OP_RECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) | |
28 | ||
4aece6a1 | 29 | #if defined(CONFIG_NFS_V4_1) |
f2a62561 | 30 | #define CB_OP_LAYOUTRECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
1be5683b | 31 | #define CB_OP_DEVICENOTIFY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
4aece6a1 BH |
32 | #define CB_OP_SEQUENCE_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ |
33 | 4 + 1 + 3) | |
31f09607 | 34 | #define CB_OP_RECALLANY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
b9efa1b2 | 35 | #define CB_OP_RECALLSLOT_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
4aece6a1 BH |
36 | #endif /* CONFIG_NFS_V4_1 */ |
37 | ||
1da177e4 LT |
38 | #define NFSDBG_FACILITY NFSDBG_CALLBACK |
39 | ||
31d2b435 AA |
40 | /* Internal error code */ |
41 | #define NFS4ERR_RESOURCE_HDR 11050 | |
42 | ||
c36fca52 AA |
43 | typedef __be32 (*callback_process_op_t)(void *, void *, |
44 | struct cb_process_state *); | |
e6f684f6 AV |
45 | typedef __be32 (*callback_decode_arg_t)(struct svc_rqst *, struct xdr_stream *, void *); |
46 | typedef __be32 (*callback_encode_res_t)(struct svc_rqst *, struct xdr_stream *, void *); | |
1da177e4 LT |
47 | |
48 | ||
49 | struct callback_op { | |
50 | callback_process_op_t process_op; | |
51 | callback_decode_arg_t decode_args; | |
52 | callback_encode_res_t encode_res; | |
53 | long res_maxsize; | |
54 | }; | |
55 | ||
56 | static struct callback_op callback_ops[]; | |
57 | ||
7111c66e | 58 | static __be32 nfs4_callback_null(struct svc_rqst *rqstp, void *argp, void *resp) |
1da177e4 LT |
59 | { |
60 | return htonl(NFS4_OK); | |
61 | } | |
62 | ||
5704fdeb | 63 | static int nfs4_decode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
64 | { |
65 | return xdr_argsize_check(rqstp, p); | |
66 | } | |
67 | ||
5704fdeb | 68 | static int nfs4_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
69 | { |
70 | return xdr_ressize_check(rqstp, p); | |
71 | } | |
72 | ||
5704fdeb | 73 | static __be32 *read_buf(struct xdr_stream *xdr, int nbytes) |
1da177e4 | 74 | { |
5704fdeb | 75 | __be32 *p; |
1da177e4 LT |
76 | |
77 | p = xdr_inline_decode(xdr, nbytes); | |
78 | if (unlikely(p == NULL)) | |
a030889a | 79 | printk(KERN_WARNING "NFS: NFSv4 callback reply buffer overflowed!\n"); |
1da177e4 LT |
80 | return p; |
81 | } | |
82 | ||
e6f684f6 | 83 | static __be32 decode_string(struct xdr_stream *xdr, unsigned int *len, const char **str) |
1da177e4 | 84 | { |
5704fdeb | 85 | __be32 *p; |
1da177e4 LT |
86 | |
87 | p = read_buf(xdr, 4); | |
88 | if (unlikely(p == NULL)) | |
89 | return htonl(NFS4ERR_RESOURCE); | |
90 | *len = ntohl(*p); | |
91 | ||
92 | if (*len != 0) { | |
93 | p = read_buf(xdr, *len); | |
94 | if (unlikely(p == NULL)) | |
95 | return htonl(NFS4ERR_RESOURCE); | |
96 | *str = (const char *)p; | |
97 | } else | |
98 | *str = NULL; | |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
e6f684f6 | 103 | static __be32 decode_fh(struct xdr_stream *xdr, struct nfs_fh *fh) |
1da177e4 | 104 | { |
5704fdeb | 105 | __be32 *p; |
1da177e4 LT |
106 | |
107 | p = read_buf(xdr, 4); | |
108 | if (unlikely(p == NULL)) | |
109 | return htonl(NFS4ERR_RESOURCE); | |
110 | fh->size = ntohl(*p); | |
111 | if (fh->size > NFS4_FHSIZE) | |
112 | return htonl(NFS4ERR_BADHANDLE); | |
113 | p = read_buf(xdr, fh->size); | |
114 | if (unlikely(p == NULL)) | |
115 | return htonl(NFS4ERR_RESOURCE); | |
116 | memcpy(&fh->data[0], p, fh->size); | |
117 | memset(&fh->data[fh->size], 0, sizeof(fh->data) - fh->size); | |
118 | return 0; | |
119 | } | |
120 | ||
e6f684f6 | 121 | static __be32 decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) |
1da177e4 | 122 | { |
5704fdeb | 123 | __be32 *p; |
1da177e4 LT |
124 | unsigned int attrlen; |
125 | ||
126 | p = read_buf(xdr, 4); | |
127 | if (unlikely(p == NULL)) | |
128 | return htonl(NFS4ERR_RESOURCE); | |
129 | attrlen = ntohl(*p); | |
130 | p = read_buf(xdr, attrlen << 2); | |
131 | if (unlikely(p == NULL)) | |
132 | return htonl(NFS4ERR_RESOURCE); | |
133 | if (likely(attrlen > 0)) | |
134 | bitmap[0] = ntohl(*p++); | |
135 | if (attrlen > 1) | |
136 | bitmap[1] = ntohl(*p); | |
137 | return 0; | |
138 | } | |
139 | ||
e6f684f6 | 140 | static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) |
1da177e4 | 141 | { |
5704fdeb | 142 | __be32 *p; |
1da177e4 | 143 | |
2d2f24ad | 144 | p = read_buf(xdr, NFS4_STATEID_SIZE); |
1da177e4 LT |
145 | if (unlikely(p == NULL)) |
146 | return htonl(NFS4ERR_RESOURCE); | |
2d2f24ad | 147 | memcpy(stateid, p, NFS4_STATEID_SIZE); |
1da177e4 LT |
148 | return 0; |
149 | } | |
150 | ||
e6f684f6 | 151 | static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound_hdr_arg *hdr) |
1da177e4 | 152 | { |
5704fdeb | 153 | __be32 *p; |
e6f684f6 | 154 | __be32 status; |
1da177e4 LT |
155 | |
156 | status = decode_string(xdr, &hdr->taglen, &hdr->tag); | |
157 | if (unlikely(status != 0)) | |
158 | return status; | |
159 | /* We do not like overly long tags! */ | |
5cce428d | 160 | if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) { |
a030889a | 161 | printk("NFS: NFSv4 CALLBACK %s: client sent tag of length %u\n", |
3110ff80 | 162 | __func__, hdr->taglen); |
1da177e4 LT |
163 | return htonl(NFS4ERR_RESOURCE); |
164 | } | |
165 | p = read_buf(xdr, 12); | |
166 | if (unlikely(p == NULL)) | |
167 | return htonl(NFS4ERR_RESOURCE); | |
b8f2ef84 | 168 | hdr->minorversion = ntohl(*p++); |
459de2ed BS |
169 | /* Check for minor version support */ |
170 | if (hdr->minorversion <= NFS4_MAX_MINOR_VERSION) { | |
42c2c424 | 171 | hdr->cb_ident = ntohl(*p++); /* ignored by v4.1 and v4.2 */ |
48a9e2d2 | 172 | } else { |
9a3ba432 | 173 | pr_warn_ratelimited("NFS: %s: NFSv4 server callback with " |
b8f2ef84 BH |
174 | "illegal minor version %u!\n", |
175 | __func__, hdr->minorversion); | |
1da177e4 LT |
176 | return htonl(NFS4ERR_MINOR_VERS_MISMATCH); |
177 | } | |
1da177e4 | 178 | hdr->nops = ntohl(*p); |
b8f2ef84 BH |
179 | dprintk("%s: minorversion %d nops %d\n", __func__, |
180 | hdr->minorversion, hdr->nops); | |
1da177e4 LT |
181 | return 0; |
182 | } | |
183 | ||
e6f684f6 | 184 | static __be32 decode_op_hdr(struct xdr_stream *xdr, unsigned int *op) |
1da177e4 | 185 | { |
5704fdeb | 186 | __be32 *p; |
1da177e4 LT |
187 | p = read_buf(xdr, 4); |
188 | if (unlikely(p == NULL)) | |
31d2b435 | 189 | return htonl(NFS4ERR_RESOURCE_HDR); |
1da177e4 LT |
190 | *op = ntohl(*p); |
191 | return 0; | |
192 | } | |
193 | ||
e6f684f6 | 194 | static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_getattrargs *args) |
1da177e4 | 195 | { |
e6f684f6 | 196 | __be32 status; |
1da177e4 LT |
197 | |
198 | status = decode_fh(xdr, &args->fh); | |
199 | if (unlikely(status != 0)) | |
200 | goto out; | |
671beed7 | 201 | args->addr = svc_addr(rqstp); |
1da177e4 LT |
202 | status = decode_bitmap(xdr, args->bitmap); |
203 | out: | |
3110ff80 | 204 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
1da177e4 LT |
205 | return status; |
206 | } | |
207 | ||
e6f684f6 | 208 | static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_recallargs *args) |
1da177e4 | 209 | { |
5704fdeb | 210 | __be32 *p; |
e6f684f6 | 211 | __be32 status; |
1da177e4 | 212 | |
c1d35866 | 213 | args->addr = svc_addr(rqstp); |
1da177e4 LT |
214 | status = decode_stateid(xdr, &args->stateid); |
215 | if (unlikely(status != 0)) | |
216 | goto out; | |
217 | p = read_buf(xdr, 4); | |
218 | if (unlikely(p == NULL)) { | |
219 | status = htonl(NFS4ERR_RESOURCE); | |
220 | goto out; | |
221 | } | |
222 | args->truncate = ntohl(*p); | |
223 | status = decode_fh(xdr, &args->fh); | |
224 | out: | |
3110ff80 | 225 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
3873bc50 | 226 | return status; |
1da177e4 LT |
227 | } |
228 | ||
4aece6a1 BH |
229 | #if defined(CONFIG_NFS_V4_1) |
230 | ||
f2a62561 FI |
231 | static __be32 decode_layoutrecall_args(struct svc_rqst *rqstp, |
232 | struct xdr_stream *xdr, | |
233 | struct cb_layoutrecallargs *args) | |
234 | { | |
235 | __be32 *p; | |
236 | __be32 status = 0; | |
237 | uint32_t iomode; | |
238 | ||
239 | args->cbl_addr = svc_addr(rqstp); | |
240 | p = read_buf(xdr, 4 * sizeof(uint32_t)); | |
241 | if (unlikely(p == NULL)) { | |
242 | status = htonl(NFS4ERR_BADXDR); | |
243 | goto out; | |
244 | } | |
245 | ||
246 | args->cbl_layout_type = ntohl(*p++); | |
247 | /* Depite the spec's xdr, iomode really belongs in the FILE switch, | |
25985edc | 248 | * as it is unusable and ignored with the other types. |
f2a62561 FI |
249 | */ |
250 | iomode = ntohl(*p++); | |
251 | args->cbl_layoutchanged = ntohl(*p++); | |
252 | args->cbl_recall_type = ntohl(*p++); | |
253 | ||
254 | if (args->cbl_recall_type == RETURN_FILE) { | |
255 | args->cbl_range.iomode = iomode; | |
256 | status = decode_fh(xdr, &args->cbl_fh); | |
257 | if (unlikely(status != 0)) | |
258 | goto out; | |
259 | ||
260 | p = read_buf(xdr, 2 * sizeof(uint64_t)); | |
261 | if (unlikely(p == NULL)) { | |
262 | status = htonl(NFS4ERR_BADXDR); | |
263 | goto out; | |
264 | } | |
265 | p = xdr_decode_hyper(p, &args->cbl_range.offset); | |
266 | p = xdr_decode_hyper(p, &args->cbl_range.length); | |
267 | status = decode_stateid(xdr, &args->cbl_stateid); | |
268 | if (unlikely(status != 0)) | |
269 | goto out; | |
270 | } else if (args->cbl_recall_type == RETURN_FSID) { | |
271 | p = read_buf(xdr, 2 * sizeof(uint64_t)); | |
272 | if (unlikely(p == NULL)) { | |
273 | status = htonl(NFS4ERR_BADXDR); | |
274 | goto out; | |
275 | } | |
276 | p = xdr_decode_hyper(p, &args->cbl_fsid.major); | |
277 | p = xdr_decode_hyper(p, &args->cbl_fsid.minor); | |
278 | } else if (args->cbl_recall_type != RETURN_ALL) { | |
279 | status = htonl(NFS4ERR_BADXDR); | |
280 | goto out; | |
281 | } | |
282 | dprintk("%s: ltype 0x%x iomode %d changed %d recall_type %d\n", | |
283 | __func__, | |
284 | args->cbl_layout_type, iomode, | |
285 | args->cbl_layoutchanged, args->cbl_recall_type); | |
286 | out: | |
287 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
288 | return status; | |
289 | } | |
290 | ||
1be5683b ME |
291 | static |
292 | __be32 decode_devicenotify_args(struct svc_rqst *rqstp, | |
293 | struct xdr_stream *xdr, | |
294 | struct cb_devicenotifyargs *args) | |
295 | { | |
296 | __be32 *p; | |
297 | __be32 status = 0; | |
298 | u32 tmp; | |
299 | int n, i; | |
300 | args->ndevs = 0; | |
301 | ||
302 | /* Num of device notifications */ | |
303 | p = read_buf(xdr, sizeof(uint32_t)); | |
304 | if (unlikely(p == NULL)) { | |
305 | status = htonl(NFS4ERR_BADXDR); | |
306 | goto out; | |
307 | } | |
308 | n = ntohl(*p++); | |
309 | if (n <= 0) | |
310 | goto out; | |
363e0df0 DC |
311 | if (n > ULONG_MAX / sizeof(*args->devs)) { |
312 | status = htonl(NFS4ERR_BADXDR); | |
313 | goto out; | |
314 | } | |
1be5683b ME |
315 | |
316 | args->devs = kmalloc(n * sizeof(*args->devs), GFP_KERNEL); | |
317 | if (!args->devs) { | |
318 | status = htonl(NFS4ERR_DELAY); | |
319 | goto out; | |
320 | } | |
321 | ||
322 | /* Decode each dev notification */ | |
323 | for (i = 0; i < n; i++) { | |
324 | struct cb_devicenotifyitem *dev = &args->devs[i]; | |
325 | ||
326 | p = read_buf(xdr, (4 * sizeof(uint32_t)) + NFS4_DEVICEID4_SIZE); | |
327 | if (unlikely(p == NULL)) { | |
328 | status = htonl(NFS4ERR_BADXDR); | |
329 | goto err; | |
330 | } | |
331 | ||
332 | tmp = ntohl(*p++); /* bitmap size */ | |
333 | if (tmp != 1) { | |
334 | status = htonl(NFS4ERR_INVAL); | |
335 | goto err; | |
336 | } | |
337 | dev->cbd_notify_type = ntohl(*p++); | |
338 | if (dev->cbd_notify_type != NOTIFY_DEVICEID4_CHANGE && | |
339 | dev->cbd_notify_type != NOTIFY_DEVICEID4_DELETE) { | |
340 | status = htonl(NFS4ERR_INVAL); | |
341 | goto err; | |
342 | } | |
343 | ||
344 | tmp = ntohl(*p++); /* opaque size */ | |
345 | if (((dev->cbd_notify_type == NOTIFY_DEVICEID4_CHANGE) && | |
346 | (tmp != NFS4_DEVICEID4_SIZE + 8)) || | |
347 | ((dev->cbd_notify_type == NOTIFY_DEVICEID4_DELETE) && | |
348 | (tmp != NFS4_DEVICEID4_SIZE + 4))) { | |
349 | status = htonl(NFS4ERR_INVAL); | |
350 | goto err; | |
351 | } | |
352 | dev->cbd_layout_type = ntohl(*p++); | |
353 | memcpy(dev->cbd_dev_id.data, p, NFS4_DEVICEID4_SIZE); | |
354 | p += XDR_QUADLEN(NFS4_DEVICEID4_SIZE); | |
355 | ||
356 | if (dev->cbd_layout_type == NOTIFY_DEVICEID4_CHANGE) { | |
357 | p = read_buf(xdr, sizeof(uint32_t)); | |
358 | if (unlikely(p == NULL)) { | |
359 | status = htonl(NFS4ERR_BADXDR); | |
360 | goto err; | |
361 | } | |
362 | dev->cbd_immediate = ntohl(*p++); | |
363 | } else { | |
364 | dev->cbd_immediate = 0; | |
365 | } | |
366 | ||
367 | args->ndevs++; | |
368 | ||
369 | dprintk("%s: type %d layout 0x%x immediate %d\n", | |
370 | __func__, dev->cbd_notify_type, dev->cbd_layout_type, | |
371 | dev->cbd_immediate); | |
372 | } | |
373 | out: | |
374 | dprintk("%s: status %d ndevs %d\n", | |
375 | __func__, ntohl(status), args->ndevs); | |
376 | return status; | |
377 | err: | |
378 | kfree(args->devs); | |
379 | goto out; | |
380 | } | |
381 | ||
9733f0d9 | 382 | static __be32 decode_sessionid(struct xdr_stream *xdr, |
4aece6a1 BH |
383 | struct nfs4_sessionid *sid) |
384 | { | |
9733f0d9 | 385 | __be32 *p; |
4aece6a1 BH |
386 | int len = NFS4_MAX_SESSIONID_LEN; |
387 | ||
388 | p = read_buf(xdr, len); | |
389 | if (unlikely(p == NULL)) | |
a419aef8 | 390 | return htonl(NFS4ERR_RESOURCE); |
4aece6a1 BH |
391 | |
392 | memcpy(sid->data, p, len); | |
393 | return 0; | |
394 | } | |
395 | ||
9733f0d9 | 396 | static __be32 decode_rc_list(struct xdr_stream *xdr, |
4aece6a1 BH |
397 | struct referring_call_list *rc_list) |
398 | { | |
9733f0d9 | 399 | __be32 *p; |
4aece6a1 | 400 | int i; |
9733f0d9 | 401 | __be32 status; |
4aece6a1 BH |
402 | |
403 | status = decode_sessionid(xdr, &rc_list->rcl_sessionid); | |
404 | if (status) | |
405 | goto out; | |
406 | ||
407 | status = htonl(NFS4ERR_RESOURCE); | |
408 | p = read_buf(xdr, sizeof(uint32_t)); | |
409 | if (unlikely(p == NULL)) | |
410 | goto out; | |
411 | ||
412 | rc_list->rcl_nrefcalls = ntohl(*p++); | |
413 | if (rc_list->rcl_nrefcalls) { | |
414 | p = read_buf(xdr, | |
415 | rc_list->rcl_nrefcalls * 2 * sizeof(uint32_t)); | |
416 | if (unlikely(p == NULL)) | |
417 | goto out; | |
418 | rc_list->rcl_refcalls = kmalloc(rc_list->rcl_nrefcalls * | |
419 | sizeof(*rc_list->rcl_refcalls), | |
420 | GFP_KERNEL); | |
421 | if (unlikely(rc_list->rcl_refcalls == NULL)) | |
422 | goto out; | |
423 | for (i = 0; i < rc_list->rcl_nrefcalls; i++) { | |
424 | rc_list->rcl_refcalls[i].rc_sequenceid = ntohl(*p++); | |
425 | rc_list->rcl_refcalls[i].rc_slotid = ntohl(*p++); | |
426 | } | |
427 | } | |
428 | status = 0; | |
429 | ||
430 | out: | |
431 | return status; | |
432 | } | |
433 | ||
9733f0d9 | 434 | static __be32 decode_cb_sequence_args(struct svc_rqst *rqstp, |
4aece6a1 BH |
435 | struct xdr_stream *xdr, |
436 | struct cb_sequenceargs *args) | |
437 | { | |
9733f0d9 | 438 | __be32 *p; |
4aece6a1 | 439 | int i; |
9733f0d9 | 440 | __be32 status; |
4aece6a1 BH |
441 | |
442 | status = decode_sessionid(xdr, &args->csa_sessionid); | |
443 | if (status) | |
444 | goto out; | |
445 | ||
446 | status = htonl(NFS4ERR_RESOURCE); | |
447 | p = read_buf(xdr, 5 * sizeof(uint32_t)); | |
448 | if (unlikely(p == NULL)) | |
449 | goto out; | |
450 | ||
65fc64e5 | 451 | args->csa_addr = svc_addr(rqstp); |
4aece6a1 BH |
452 | args->csa_sequenceid = ntohl(*p++); |
453 | args->csa_slotid = ntohl(*p++); | |
454 | args->csa_highestslotid = ntohl(*p++); | |
455 | args->csa_cachethis = ntohl(*p++); | |
456 | args->csa_nrclists = ntohl(*p++); | |
457 | args->csa_rclists = NULL; | |
458 | if (args->csa_nrclists) { | |
0439f31c DC |
459 | args->csa_rclists = kmalloc_array(args->csa_nrclists, |
460 | sizeof(*args->csa_rclists), | |
461 | GFP_KERNEL); | |
4aece6a1 BH |
462 | if (unlikely(args->csa_rclists == NULL)) |
463 | goto out; | |
464 | ||
465 | for (i = 0; i < args->csa_nrclists; i++) { | |
466 | status = decode_rc_list(xdr, &args->csa_rclists[i]); | |
467 | if (status) | |
468 | goto out_free; | |
469 | } | |
470 | } | |
471 | status = 0; | |
472 | ||
473 | dprintk("%s: sessionid %x:%x:%x:%x sequenceid %u slotid %u " | |
474 | "highestslotid %u cachethis %d nrclists %u\n", | |
475 | __func__, | |
476 | ((u32 *)&args->csa_sessionid)[0], | |
477 | ((u32 *)&args->csa_sessionid)[1], | |
478 | ((u32 *)&args->csa_sessionid)[2], | |
479 | ((u32 *)&args->csa_sessionid)[3], | |
480 | args->csa_sequenceid, args->csa_slotid, | |
481 | args->csa_highestslotid, args->csa_cachethis, | |
482 | args->csa_nrclists); | |
483 | out: | |
484 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
485 | return status; | |
486 | ||
487 | out_free: | |
488 | for (i = 0; i < args->csa_nrclists; i++) | |
489 | kfree(args->csa_rclists[i].rcl_refcalls); | |
490 | kfree(args->csa_rclists); | |
491 | goto out; | |
492 | } | |
493 | ||
9733f0d9 | 494 | static __be32 decode_recallany_args(struct svc_rqst *rqstp, |
31f09607 AB |
495 | struct xdr_stream *xdr, |
496 | struct cb_recallanyargs *args) | |
497 | { | |
d743c3c9 PT |
498 | uint32_t bitmap[2]; |
499 | __be32 *p, status; | |
31f09607 AB |
500 | |
501 | args->craa_addr = svc_addr(rqstp); | |
502 | p = read_buf(xdr, 4); | |
503 | if (unlikely(p == NULL)) | |
504 | return htonl(NFS4ERR_BADXDR); | |
505 | args->craa_objs_to_keep = ntohl(*p++); | |
d743c3c9 PT |
506 | status = decode_bitmap(xdr, bitmap); |
507 | if (unlikely(status)) | |
508 | return status; | |
509 | args->craa_type_mask = bitmap[0]; | |
31f09607 AB |
510 | |
511 | return 0; | |
512 | } | |
513 | ||
9733f0d9 | 514 | static __be32 decode_recallslot_args(struct svc_rqst *rqstp, |
b9efa1b2 AA |
515 | struct xdr_stream *xdr, |
516 | struct cb_recallslotargs *args) | |
517 | { | |
518 | __be32 *p; | |
519 | ||
520 | args->crsa_addr = svc_addr(rqstp); | |
521 | p = read_buf(xdr, 4); | |
522 | if (unlikely(p == NULL)) | |
523 | return htonl(NFS4ERR_BADXDR); | |
d5fb4ce3 | 524 | args->crsa_target_highest_slotid = ntohl(*p++); |
b9efa1b2 AA |
525 | return 0; |
526 | } | |
527 | ||
4aece6a1 BH |
528 | #endif /* CONFIG_NFS_V4_1 */ |
529 | ||
e6f684f6 | 530 | static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) |
1da177e4 | 531 | { |
5704fdeb | 532 | __be32 *p; |
1da177e4 LT |
533 | |
534 | p = xdr_reserve_space(xdr, 4 + len); | |
535 | if (unlikely(p == NULL)) | |
536 | return htonl(NFS4ERR_RESOURCE); | |
537 | xdr_encode_opaque(p, str, len); | |
538 | return 0; | |
539 | } | |
540 | ||
541 | #define CB_SUPPORTED_ATTR0 (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) | |
542 | #define CB_SUPPORTED_ATTR1 (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) | |
5704fdeb | 543 | static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, __be32 **savep) |
1da177e4 | 544 | { |
5704fdeb AV |
545 | __be32 bm[2]; |
546 | __be32 *p; | |
1da177e4 LT |
547 | |
548 | bm[0] = htonl(bitmap[0] & CB_SUPPORTED_ATTR0); | |
549 | bm[1] = htonl(bitmap[1] & CB_SUPPORTED_ATTR1); | |
550 | if (bm[1] != 0) { | |
551 | p = xdr_reserve_space(xdr, 16); | |
552 | if (unlikely(p == NULL)) | |
553 | return htonl(NFS4ERR_RESOURCE); | |
554 | *p++ = htonl(2); | |
555 | *p++ = bm[0]; | |
556 | *p++ = bm[1]; | |
557 | } else if (bm[0] != 0) { | |
558 | p = xdr_reserve_space(xdr, 12); | |
559 | if (unlikely(p == NULL)) | |
560 | return htonl(NFS4ERR_RESOURCE); | |
561 | *p++ = htonl(1); | |
562 | *p++ = bm[0]; | |
563 | } else { | |
564 | p = xdr_reserve_space(xdr, 8); | |
565 | if (unlikely(p == NULL)) | |
566 | return htonl(NFS4ERR_RESOURCE); | |
567 | *p++ = htonl(0); | |
568 | } | |
569 | *savep = p; | |
570 | return 0; | |
571 | } | |
572 | ||
e6f684f6 | 573 | static __be32 encode_attr_change(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t change) |
1da177e4 | 574 | { |
5704fdeb | 575 | __be32 *p; |
1da177e4 LT |
576 | |
577 | if (!(bitmap[0] & FATTR4_WORD0_CHANGE)) | |
578 | return 0; | |
579 | p = xdr_reserve_space(xdr, 8); | |
90dc7d27 | 580 | if (unlikely(!p)) |
1da177e4 LT |
581 | return htonl(NFS4ERR_RESOURCE); |
582 | p = xdr_encode_hyper(p, change); | |
583 | return 0; | |
584 | } | |
585 | ||
e6f684f6 | 586 | static __be32 encode_attr_size(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t size) |
1da177e4 | 587 | { |
5704fdeb | 588 | __be32 *p; |
1da177e4 LT |
589 | |
590 | if (!(bitmap[0] & FATTR4_WORD0_SIZE)) | |
591 | return 0; | |
592 | p = xdr_reserve_space(xdr, 8); | |
90dc7d27 | 593 | if (unlikely(!p)) |
1da177e4 LT |
594 | return htonl(NFS4ERR_RESOURCE); |
595 | p = xdr_encode_hyper(p, size); | |
596 | return 0; | |
597 | } | |
598 | ||
e6f684f6 | 599 | static __be32 encode_attr_time(struct xdr_stream *xdr, const struct timespec *time) |
1da177e4 | 600 | { |
5704fdeb | 601 | __be32 *p; |
1da177e4 LT |
602 | |
603 | p = xdr_reserve_space(xdr, 12); | |
90dc7d27 | 604 | if (unlikely(!p)) |
1da177e4 LT |
605 | return htonl(NFS4ERR_RESOURCE); |
606 | p = xdr_encode_hyper(p, time->tv_sec); | |
607 | *p = htonl(time->tv_nsec); | |
608 | return 0; | |
609 | } | |
610 | ||
e6f684f6 | 611 | static __be32 encode_attr_ctime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) |
1da177e4 LT |
612 | { |
613 | if (!(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) | |
614 | return 0; | |
615 | return encode_attr_time(xdr,time); | |
616 | } | |
617 | ||
e6f684f6 | 618 | static __be32 encode_attr_mtime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) |
1da177e4 LT |
619 | { |
620 | if (!(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) | |
621 | return 0; | |
622 | return encode_attr_time(xdr,time); | |
623 | } | |
624 | ||
e6f684f6 | 625 | static __be32 encode_compound_hdr_res(struct xdr_stream *xdr, struct cb_compound_hdr_res *hdr) |
1da177e4 | 626 | { |
e6f684f6 | 627 | __be32 status; |
1da177e4 LT |
628 | |
629 | hdr->status = xdr_reserve_space(xdr, 4); | |
630 | if (unlikely(hdr->status == NULL)) | |
631 | return htonl(NFS4ERR_RESOURCE); | |
632 | status = encode_string(xdr, hdr->taglen, hdr->tag); | |
633 | if (unlikely(status != 0)) | |
634 | return status; | |
635 | hdr->nops = xdr_reserve_space(xdr, 4); | |
636 | if (unlikely(hdr->nops == NULL)) | |
637 | return htonl(NFS4ERR_RESOURCE); | |
638 | return 0; | |
639 | } | |
640 | ||
e6f684f6 | 641 | static __be32 encode_op_hdr(struct xdr_stream *xdr, uint32_t op, __be32 res) |
1da177e4 | 642 | { |
5704fdeb | 643 | __be32 *p; |
1da177e4 LT |
644 | |
645 | p = xdr_reserve_space(xdr, 8); | |
646 | if (unlikely(p == NULL)) | |
31d2b435 | 647 | return htonl(NFS4ERR_RESOURCE_HDR); |
1da177e4 LT |
648 | *p++ = htonl(op); |
649 | *p = res; | |
650 | return 0; | |
651 | } | |
652 | ||
e6f684f6 | 653 | static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, const struct cb_getattrres *res) |
1da177e4 | 654 | { |
5704fdeb | 655 | __be32 *savep = NULL; |
e6f684f6 | 656 | __be32 status = res->status; |
1da177e4 LT |
657 | |
658 | if (unlikely(status != 0)) | |
659 | goto out; | |
660 | status = encode_attr_bitmap(xdr, res->bitmap, &savep); | |
661 | if (unlikely(status != 0)) | |
662 | goto out; | |
663 | status = encode_attr_change(xdr, res->bitmap, res->change_attr); | |
664 | if (unlikely(status != 0)) | |
665 | goto out; | |
666 | status = encode_attr_size(xdr, res->bitmap, res->size); | |
667 | if (unlikely(status != 0)) | |
668 | goto out; | |
669 | status = encode_attr_ctime(xdr, res->bitmap, &res->ctime); | |
670 | if (unlikely(status != 0)) | |
671 | goto out; | |
672 | status = encode_attr_mtime(xdr, res->bitmap, &res->mtime); | |
673 | *savep = htonl((unsigned int)((char *)xdr->p - (char *)(savep+1))); | |
674 | out: | |
3110ff80 | 675 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
1da177e4 LT |
676 | return status; |
677 | } | |
678 | ||
34bc47c9 BH |
679 | #if defined(CONFIG_NFS_V4_1) |
680 | ||
9733f0d9 | 681 | static __be32 encode_sessionid(struct xdr_stream *xdr, |
4aece6a1 BH |
682 | const struct nfs4_sessionid *sid) |
683 | { | |
9733f0d9 | 684 | __be32 *p; |
4aece6a1 BH |
685 | int len = NFS4_MAX_SESSIONID_LEN; |
686 | ||
687 | p = xdr_reserve_space(xdr, len); | |
688 | if (unlikely(p == NULL)) | |
689 | return htonl(NFS4ERR_RESOURCE); | |
690 | ||
691 | memcpy(p, sid, len); | |
692 | return 0; | |
693 | } | |
694 | ||
9733f0d9 | 695 | static __be32 encode_cb_sequence_res(struct svc_rqst *rqstp, |
4aece6a1 BH |
696 | struct xdr_stream *xdr, |
697 | const struct cb_sequenceres *res) | |
698 | { | |
9733f0d9 | 699 | __be32 *p; |
e216c8c7 | 700 | __be32 status = res->csr_status; |
4aece6a1 BH |
701 | |
702 | if (unlikely(status != 0)) | |
703 | goto out; | |
704 | ||
705 | encode_sessionid(xdr, &res->csr_sessionid); | |
706 | ||
707 | p = xdr_reserve_space(xdr, 4 * sizeof(uint32_t)); | |
708 | if (unlikely(p == NULL)) | |
709 | return htonl(NFS4ERR_RESOURCE); | |
710 | ||
711 | *p++ = htonl(res->csr_sequenceid); | |
712 | *p++ = htonl(res->csr_slotid); | |
713 | *p++ = htonl(res->csr_highestslotid); | |
714 | *p++ = htonl(res->csr_target_highestslotid); | |
715 | out: | |
716 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
717 | return status; | |
718 | } | |
719 | ||
34bc47c9 BH |
720 | static __be32 |
721 | preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) | |
722 | { | |
281fe15d BH |
723 | if (op_nr == OP_CB_SEQUENCE) { |
724 | if (nop != 0) | |
725 | return htonl(NFS4ERR_SEQUENCE_POS); | |
726 | } else { | |
727 | if (nop == 0) | |
728 | return htonl(NFS4ERR_OP_NOT_IN_SESSION); | |
729 | } | |
730 | ||
34bc47c9 BH |
731 | switch (op_nr) { |
732 | case OP_CB_GETATTR: | |
733 | case OP_CB_RECALL: | |
4aece6a1 | 734 | case OP_CB_SEQUENCE: |
31f09607 | 735 | case OP_CB_RECALL_ANY: |
b9efa1b2 | 736 | case OP_CB_RECALL_SLOT: |
f2a62561 | 737 | case OP_CB_LAYOUTRECALL: |
1be5683b | 738 | case OP_CB_NOTIFY_DEVICEID: |
34bc47c9 BH |
739 | *op = &callback_ops[op_nr]; |
740 | break; | |
741 | ||
34bc47c9 BH |
742 | case OP_CB_NOTIFY: |
743 | case OP_CB_PUSH_DELEG: | |
34bc47c9 | 744 | case OP_CB_RECALLABLE_OBJ_AVAIL: |
34bc47c9 BH |
745 | case OP_CB_WANTS_CANCELLED: |
746 | case OP_CB_NOTIFY_LOCK: | |
747 | return htonl(NFS4ERR_NOTSUPP); | |
748 | ||
749 | default: | |
750 | return htonl(NFS4ERR_OP_ILLEGAL); | |
751 | } | |
752 | ||
753 | return htonl(NFS_OK); | |
754 | } | |
755 | ||
42acd021 AA |
756 | static void nfs4_callback_free_slot(struct nfs4_session *session) |
757 | { | |
758 | struct nfs4_slot_table *tbl = &session->bc_slot_table; | |
759 | ||
760 | spin_lock(&tbl->slot_tbl_lock); | |
761 | /* | |
762 | * Let the state manager know callback processing done. | |
763 | * A single slot, so highest used slotid is either 0 or -1 | |
764 | */ | |
45d43c29 | 765 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
774d5f14 | 766 | nfs4_slot_tbl_drain_complete(tbl); |
42acd021 AA |
767 | spin_unlock(&tbl->slot_tbl_lock); |
768 | } | |
769 | ||
55a67399 | 770 | static void nfs4_cb_free_slot(struct cb_process_state *cps) |
42acd021 | 771 | { |
45d43c29 | 772 | if (cps->slotid != NFS4_NO_SLOT) |
55a67399 | 773 | nfs4_callback_free_slot(cps->clp->cl_session); |
42acd021 AA |
774 | } |
775 | ||
34bc47c9 BH |
776 | #else /* CONFIG_NFS_V4_1 */ |
777 | ||
778 | static __be32 | |
779 | preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) | |
780 | { | |
781 | return htonl(NFS4ERR_MINOR_VERS_MISMATCH); | |
782 | } | |
783 | ||
55a67399 | 784 | static void nfs4_cb_free_slot(struct cb_process_state *cps) |
42acd021 AA |
785 | { |
786 | } | |
34bc47c9 BH |
787 | #endif /* CONFIG_NFS_V4_1 */ |
788 | ||
6b140b85 BS |
789 | #ifdef CONFIG_NFS_V4_2 |
790 | static __be32 | |
791 | preprocess_nfs42_op(int nop, unsigned int op_nr, struct callback_op **op) | |
792 | { | |
793 | __be32 status = preprocess_nfs41_op(nop, op_nr, op); | |
794 | if (status != htonl(NFS4ERR_OP_ILLEGAL)) | |
795 | return status; | |
796 | ||
797 | if (op_nr == OP_CB_OFFLOAD) | |
798 | return htonl(NFS4ERR_NOTSUPP); | |
799 | return htonl(NFS4ERR_OP_ILLEGAL); | |
800 | } | |
801 | #else /* CONFIG_NFS_V4_2 */ | |
802 | static __be32 | |
803 | preprocess_nfs42_op(int nop, unsigned int op_nr, struct callback_op **op) | |
804 | { | |
805 | return htonl(NFS4ERR_MINOR_VERS_MISMATCH); | |
806 | } | |
807 | #endif /* CONFIG_NFS_V4_2 */ | |
808 | ||
34bc47c9 BH |
809 | static __be32 |
810 | preprocess_nfs4_op(unsigned int op_nr, struct callback_op **op) | |
811 | { | |
812 | switch (op_nr) { | |
813 | case OP_CB_GETATTR: | |
814 | case OP_CB_RECALL: | |
815 | *op = &callback_ops[op_nr]; | |
816 | break; | |
817 | default: | |
818 | return htonl(NFS4ERR_OP_ILLEGAL); | |
819 | } | |
820 | ||
821 | return htonl(NFS_OK); | |
822 | } | |
823 | ||
459de2ed | 824 | static __be32 process_op(int nop, struct svc_rqst *rqstp, |
1da177e4 | 825 | struct xdr_stream *xdr_in, void *argp, |
c36fca52 AA |
826 | struct xdr_stream *xdr_out, void *resp, |
827 | struct cb_process_state *cps) | |
1da177e4 | 828 | { |
a162a6b8 | 829 | struct callback_op *op = &callback_ops[0]; |
31d2b435 | 830 | unsigned int op_nr; |
34bc47c9 | 831 | __be32 status; |
1da177e4 | 832 | long maxlen; |
e6f684f6 | 833 | __be32 res; |
1da177e4 | 834 | |
3110ff80 | 835 | dprintk("%s: start\n", __func__); |
1da177e4 | 836 | status = decode_op_hdr(xdr_in, &op_nr); |
31d2b435 AA |
837 | if (unlikely(status)) |
838 | return status; | |
1da177e4 | 839 | |
34bc47c9 | 840 | dprintk("%s: minorversion=%d nop=%d op_nr=%u\n", |
459de2ed | 841 | __func__, cps->minorversion, nop, op_nr); |
34bc47c9 | 842 | |
6b140b85 BS |
843 | switch (cps->minorversion) { |
844 | case 0: | |
845 | status = preprocess_nfs4_op(op_nr, &op); | |
846 | break; | |
847 | case 1: | |
848 | status = preprocess_nfs41_op(nop, op_nr, &op); | |
849 | break; | |
850 | case 2: | |
851 | status = preprocess_nfs42_op(nop, op_nr, &op); | |
852 | break; | |
853 | default: | |
854 | status = htonl(NFS4ERR_MINOR_VERS_MISMATCH); | |
855 | } | |
34bc47c9 | 856 | |
34bc47c9 BH |
857 | if (status == htonl(NFS4ERR_OP_ILLEGAL)) |
858 | op_nr = OP_CB_ILLEGAL; | |
b92b3019 AA |
859 | if (status) |
860 | goto encode_hdr; | |
31d2b435 | 861 | |
c36fca52 AA |
862 | if (cps->drc_status) { |
863 | status = cps->drc_status; | |
4911096f AA |
864 | goto encode_hdr; |
865 | } | |
866 | ||
1da177e4 LT |
867 | maxlen = xdr_out->end - xdr_out->p; |
868 | if (maxlen > 0 && maxlen < PAGE_SIZE) { | |
e95e60da AA |
869 | status = op->decode_args(rqstp, xdr_in, argp); |
870 | if (likely(status == 0)) | |
c36fca52 | 871 | status = op->process_op(argp, resp, cps); |
1da177e4 LT |
872 | } else |
873 | status = htonl(NFS4ERR_RESOURCE); | |
874 | ||
b92b3019 | 875 | encode_hdr: |
1da177e4 | 876 | res = encode_op_hdr(xdr_out, op_nr, status); |
31d2b435 AA |
877 | if (unlikely(res)) |
878 | return res; | |
1da177e4 LT |
879 | if (op->encode_res != NULL && status == 0) |
880 | status = op->encode_res(rqstp, xdr_out, resp); | |
3110ff80 | 881 | dprintk("%s: done, status = %d\n", __func__, ntohl(status)); |
1da177e4 LT |
882 | return status; |
883 | } | |
884 | ||
885 | /* | |
886 | * Decode, process and encode a COMPOUND | |
887 | */ | |
7111c66e | 888 | static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *resp) |
1da177e4 | 889 | { |
3a6258e1 TM |
890 | struct cb_compound_hdr_arg hdr_arg = { 0 }; |
891 | struct cb_compound_hdr_res hdr_res = { NULL }; | |
1da177e4 | 892 | struct xdr_stream xdr_in, xdr_out; |
c36fca52 AA |
893 | __be32 *p, status; |
894 | struct cb_process_state cps = { | |
895 | .drc_status = 0, | |
896 | .clp = NULL, | |
45d43c29 | 897 | .slotid = NFS4_NO_SLOT, |
9695c705 | 898 | .net = SVC_NET(rqstp), |
c36fca52 | 899 | }; |
3a6258e1 | 900 | unsigned int nops = 0; |
1da177e4 | 901 | |
3110ff80 | 902 | dprintk("%s: start\n", __func__); |
1da177e4 LT |
903 | |
904 | xdr_init_decode(&xdr_in, &rqstp->rq_arg, rqstp->rq_arg.head[0].iov_base); | |
905 | ||
5704fdeb | 906 | p = (__be32*)((char *)rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len); |
1da177e4 LT |
907 | xdr_init_encode(&xdr_out, &rqstp->rq_res, p); |
908 | ||
3a6258e1 TM |
909 | status = decode_compound_hdr_arg(&xdr_in, &hdr_arg); |
910 | if (status == __constant_htonl(NFS4ERR_RESOURCE)) | |
911 | return rpc_garbage_args; | |
912 | ||
c36fca52 | 913 | if (hdr_arg.minorversion == 0) { |
9695c705 | 914 | cps.clp = nfs4_find_client_ident(SVC_NET(rqstp), hdr_arg.cb_ident); |
778be232 | 915 | if (!cps.clp || !check_gss_callback_principal(cps.clp, rqstp)) |
c36fca52 | 916 | return rpc_drop_reply; |
778be232 | 917 | } |
c36fca52 | 918 | |
459de2ed | 919 | cps.minorversion = hdr_arg.minorversion; |
1da177e4 LT |
920 | hdr_res.taglen = hdr_arg.taglen; |
921 | hdr_res.tag = hdr_arg.tag; | |
3a6258e1 TM |
922 | if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0) |
923 | return rpc_system_err; | |
1da177e4 | 924 | |
3a6258e1 | 925 | while (status == 0 && nops != hdr_arg.nops) { |
459de2ed BS |
926 | status = process_op(nops, rqstp, &xdr_in, |
927 | argp, &xdr_out, resp, &cps); | |
1da177e4 LT |
928 | nops++; |
929 | } | |
3a6258e1 | 930 | |
31d2b435 AA |
931 | /* Buffer overflow in decode_ops_hdr or encode_ops_hdr. Return |
932 | * resource error in cb_compound status without returning op */ | |
933 | if (unlikely(status == htonl(NFS4ERR_RESOURCE_HDR))) { | |
934 | status = htonl(NFS4ERR_RESOURCE); | |
935 | nops--; | |
936 | } | |
937 | ||
1da177e4 LT |
938 | *hdr_res.status = status; |
939 | *hdr_res.nops = htonl(nops); | |
55a67399 | 940 | nfs4_cb_free_slot(&cps); |
c36fca52 | 941 | nfs_put_client(cps.clp); |
3110ff80 | 942 | dprintk("%s: done, status = %u\n", __func__, ntohl(status)); |
1da177e4 LT |
943 | return rpc_success; |
944 | } | |
945 | ||
946 | /* | |
947 | * Define NFS4 callback COMPOUND ops. | |
948 | */ | |
949 | static struct callback_op callback_ops[] = { | |
950 | [0] = { | |
951 | .res_maxsize = CB_OP_HDR_RES_MAXSZ, | |
952 | }, | |
953 | [OP_CB_GETATTR] = { | |
954 | .process_op = (callback_process_op_t)nfs4_callback_getattr, | |
955 | .decode_args = (callback_decode_arg_t)decode_getattr_args, | |
956 | .encode_res = (callback_encode_res_t)encode_getattr_res, | |
957 | .res_maxsize = CB_OP_GETATTR_RES_MAXSZ, | |
958 | }, | |
959 | [OP_CB_RECALL] = { | |
960 | .process_op = (callback_process_op_t)nfs4_callback_recall, | |
961 | .decode_args = (callback_decode_arg_t)decode_recall_args, | |
962 | .res_maxsize = CB_OP_RECALL_RES_MAXSZ, | |
4aece6a1 BH |
963 | }, |
964 | #if defined(CONFIG_NFS_V4_1) | |
f2a62561 FI |
965 | [OP_CB_LAYOUTRECALL] = { |
966 | .process_op = (callback_process_op_t)nfs4_callback_layoutrecall, | |
967 | .decode_args = | |
968 | (callback_decode_arg_t)decode_layoutrecall_args, | |
969 | .res_maxsize = CB_OP_LAYOUTRECALL_RES_MAXSZ, | |
970 | }, | |
1be5683b ME |
971 | [OP_CB_NOTIFY_DEVICEID] = { |
972 | .process_op = (callback_process_op_t)nfs4_callback_devicenotify, | |
973 | .decode_args = | |
974 | (callback_decode_arg_t)decode_devicenotify_args, | |
975 | .res_maxsize = CB_OP_DEVICENOTIFY_RES_MAXSZ, | |
976 | }, | |
4aece6a1 BH |
977 | [OP_CB_SEQUENCE] = { |
978 | .process_op = (callback_process_op_t)nfs4_callback_sequence, | |
979 | .decode_args = (callback_decode_arg_t)decode_cb_sequence_args, | |
980 | .encode_res = (callback_encode_res_t)encode_cb_sequence_res, | |
981 | .res_maxsize = CB_OP_SEQUENCE_RES_MAXSZ, | |
982 | }, | |
31f09607 AB |
983 | [OP_CB_RECALL_ANY] = { |
984 | .process_op = (callback_process_op_t)nfs4_callback_recallany, | |
985 | .decode_args = (callback_decode_arg_t)decode_recallany_args, | |
986 | .res_maxsize = CB_OP_RECALLANY_RES_MAXSZ, | |
987 | }, | |
b9efa1b2 AA |
988 | [OP_CB_RECALL_SLOT] = { |
989 | .process_op = (callback_process_op_t)nfs4_callback_recallslot, | |
990 | .decode_args = (callback_decode_arg_t)decode_recallslot_args, | |
991 | .res_maxsize = CB_OP_RECALLSLOT_RES_MAXSZ, | |
992 | }, | |
4aece6a1 | 993 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 LT |
994 | }; |
995 | ||
996 | /* | |
997 | * Define NFS4 callback procedures | |
998 | */ | |
999 | static struct svc_procedure nfs4_callback_procedures1[] = { | |
1000 | [CB_NULL] = { | |
1001 | .pc_func = nfs4_callback_null, | |
1002 | .pc_decode = (kxdrproc_t)nfs4_decode_void, | |
1003 | .pc_encode = (kxdrproc_t)nfs4_encode_void, | |
1004 | .pc_xdrressize = 1, | |
1005 | }, | |
1006 | [CB_COMPOUND] = { | |
1007 | .pc_func = nfs4_callback_compound, | |
1008 | .pc_encode = (kxdrproc_t)nfs4_encode_void, | |
1009 | .pc_argsize = 256, | |
1010 | .pc_ressize = 256, | |
1011 | .pc_xdrressize = NFS4_CALLBACK_BUFSIZE, | |
1012 | } | |
1013 | }; | |
1014 | ||
1015 | struct svc_version nfs4_callback_version1 = { | |
1016 | .vs_vers = 1, | |
1017 | .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), | |
1018 | .vs_proc = nfs4_callback_procedures1, | |
1019 | .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, | |
1020 | .vs_dispatch = NULL, | |
49697ee7 | 1021 | .vs_hidden = 1, |
1da177e4 LT |
1022 | }; |
1023 | ||
07bccc2d AB |
1024 | struct svc_version nfs4_callback_version4 = { |
1025 | .vs_vers = 4, | |
1026 | .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), | |
1027 | .vs_proc = nfs4_callback_procedures1, | |
1028 | .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, | |
1029 | .vs_dispatch = NULL, | |
6070295e | 1030 | .vs_hidden = 1, |
07bccc2d | 1031 | }; |