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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" |
1da177e4 LT |
19 | |
20 | #define CB_OP_TAGLEN_MAXSZ (512) | |
21 | #define CB_OP_HDR_RES_MAXSZ (2 + CB_OP_TAGLEN_MAXSZ) | |
22 | #define CB_OP_GETATTR_BITMAP_MAXSZ (4) | |
23 | #define CB_OP_GETATTR_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ | |
24 | CB_OP_GETATTR_BITMAP_MAXSZ + \ | |
25 | 2 + 2 + 3 + 3) | |
26 | #define CB_OP_RECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) | |
27 | ||
4aece6a1 | 28 | #if defined(CONFIG_NFS_V4_1) |
f2a62561 | 29 | #define CB_OP_LAYOUTRECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
1be5683b | 30 | #define CB_OP_DEVICENOTIFY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
4aece6a1 BH |
31 | #define CB_OP_SEQUENCE_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ |
32 | 4 + 1 + 3) | |
31f09607 | 33 | #define CB_OP_RECALLANY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
b9efa1b2 | 34 | #define CB_OP_RECALLSLOT_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
4aece6a1 BH |
35 | #endif /* CONFIG_NFS_V4_1 */ |
36 | ||
1da177e4 LT |
37 | #define NFSDBG_FACILITY NFSDBG_CALLBACK |
38 | ||
31d2b435 AA |
39 | /* Internal error code */ |
40 | #define NFS4ERR_RESOURCE_HDR 11050 | |
41 | ||
c36fca52 AA |
42 | typedef __be32 (*callback_process_op_t)(void *, void *, |
43 | struct cb_process_state *); | |
e6f684f6 AV |
44 | typedef __be32 (*callback_decode_arg_t)(struct svc_rqst *, struct xdr_stream *, void *); |
45 | typedef __be32 (*callback_encode_res_t)(struct svc_rqst *, struct xdr_stream *, void *); | |
1da177e4 LT |
46 | |
47 | ||
48 | struct callback_op { | |
49 | callback_process_op_t process_op; | |
50 | callback_decode_arg_t decode_args; | |
51 | callback_encode_res_t encode_res; | |
52 | long res_maxsize; | |
53 | }; | |
54 | ||
55 | static struct callback_op callback_ops[]; | |
56 | ||
7111c66e | 57 | static __be32 nfs4_callback_null(struct svc_rqst *rqstp, void *argp, void *resp) |
1da177e4 LT |
58 | { |
59 | return htonl(NFS4_OK); | |
60 | } | |
61 | ||
5704fdeb | 62 | static int nfs4_decode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
63 | { |
64 | return xdr_argsize_check(rqstp, p); | |
65 | } | |
66 | ||
5704fdeb | 67 | static int nfs4_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
68 | { |
69 | return xdr_ressize_check(rqstp, p); | |
70 | } | |
71 | ||
5704fdeb | 72 | static __be32 *read_buf(struct xdr_stream *xdr, int nbytes) |
1da177e4 | 73 | { |
5704fdeb | 74 | __be32 *p; |
1da177e4 LT |
75 | |
76 | p = xdr_inline_decode(xdr, nbytes); | |
77 | if (unlikely(p == NULL)) | |
a030889a | 78 | printk(KERN_WARNING "NFS: NFSv4 callback reply buffer overflowed!\n"); |
1da177e4 LT |
79 | return p; |
80 | } | |
81 | ||
e6f684f6 | 82 | static __be32 decode_string(struct xdr_stream *xdr, unsigned int *len, const char **str) |
1da177e4 | 83 | { |
5704fdeb | 84 | __be32 *p; |
1da177e4 LT |
85 | |
86 | p = read_buf(xdr, 4); | |
87 | if (unlikely(p == NULL)) | |
88 | return htonl(NFS4ERR_RESOURCE); | |
89 | *len = ntohl(*p); | |
90 | ||
91 | if (*len != 0) { | |
92 | p = read_buf(xdr, *len); | |
93 | if (unlikely(p == NULL)) | |
94 | return htonl(NFS4ERR_RESOURCE); | |
95 | *str = (const char *)p; | |
96 | } else | |
97 | *str = NULL; | |
98 | ||
99 | return 0; | |
100 | } | |
101 | ||
e6f684f6 | 102 | static __be32 decode_fh(struct xdr_stream *xdr, struct nfs_fh *fh) |
1da177e4 | 103 | { |
5704fdeb | 104 | __be32 *p; |
1da177e4 LT |
105 | |
106 | p = read_buf(xdr, 4); | |
107 | if (unlikely(p == NULL)) | |
108 | return htonl(NFS4ERR_RESOURCE); | |
109 | fh->size = ntohl(*p); | |
110 | if (fh->size > NFS4_FHSIZE) | |
111 | return htonl(NFS4ERR_BADHANDLE); | |
112 | p = read_buf(xdr, fh->size); | |
113 | if (unlikely(p == NULL)) | |
114 | return htonl(NFS4ERR_RESOURCE); | |
115 | memcpy(&fh->data[0], p, fh->size); | |
116 | memset(&fh->data[fh->size], 0, sizeof(fh->data) - fh->size); | |
117 | return 0; | |
118 | } | |
119 | ||
e6f684f6 | 120 | static __be32 decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) |
1da177e4 | 121 | { |
5704fdeb | 122 | __be32 *p; |
1da177e4 LT |
123 | unsigned int attrlen; |
124 | ||
125 | p = read_buf(xdr, 4); | |
126 | if (unlikely(p == NULL)) | |
127 | return htonl(NFS4ERR_RESOURCE); | |
128 | attrlen = ntohl(*p); | |
129 | p = read_buf(xdr, attrlen << 2); | |
130 | if (unlikely(p == NULL)) | |
131 | return htonl(NFS4ERR_RESOURCE); | |
132 | if (likely(attrlen > 0)) | |
133 | bitmap[0] = ntohl(*p++); | |
134 | if (attrlen > 1) | |
135 | bitmap[1] = ntohl(*p); | |
136 | return 0; | |
137 | } | |
138 | ||
e6f684f6 | 139 | static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) |
1da177e4 | 140 | { |
5704fdeb | 141 | __be32 *p; |
1da177e4 | 142 | |
2d2f24ad | 143 | p = read_buf(xdr, NFS4_STATEID_SIZE); |
1da177e4 LT |
144 | if (unlikely(p == NULL)) |
145 | return htonl(NFS4ERR_RESOURCE); | |
2d2f24ad | 146 | memcpy(stateid, p, NFS4_STATEID_SIZE); |
1da177e4 LT |
147 | return 0; |
148 | } | |
149 | ||
e6f684f6 | 150 | static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound_hdr_arg *hdr) |
1da177e4 | 151 | { |
5704fdeb | 152 | __be32 *p; |
e6f684f6 | 153 | __be32 status; |
1da177e4 LT |
154 | |
155 | status = decode_string(xdr, &hdr->taglen, &hdr->tag); | |
156 | if (unlikely(status != 0)) | |
157 | return status; | |
158 | /* We do not like overly long tags! */ | |
5cce428d | 159 | if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) { |
a030889a | 160 | printk("NFS: NFSv4 CALLBACK %s: client sent tag of length %u\n", |
3110ff80 | 161 | __func__, hdr->taglen); |
1da177e4 LT |
162 | return htonl(NFS4ERR_RESOURCE); |
163 | } | |
164 | p = read_buf(xdr, 12); | |
165 | if (unlikely(p == NULL)) | |
166 | return htonl(NFS4ERR_RESOURCE); | |
b8f2ef84 | 167 | hdr->minorversion = ntohl(*p++); |
48a9e2d2 BH |
168 | /* Check minor version is zero or one. */ |
169 | if (hdr->minorversion <= 1) { | |
c36fca52 | 170 | hdr->cb_ident = ntohl(*p++); /* ignored by v4.1 */ |
48a9e2d2 | 171 | } else { |
9a3ba432 | 172 | pr_warn_ratelimited("NFS: %s: NFSv4 server callback with " |
b8f2ef84 BH |
173 | "illegal minor version %u!\n", |
174 | __func__, hdr->minorversion); | |
1da177e4 LT |
175 | return htonl(NFS4ERR_MINOR_VERS_MISMATCH); |
176 | } | |
1da177e4 | 177 | hdr->nops = ntohl(*p); |
b8f2ef84 BH |
178 | dprintk("%s: minorversion %d nops %d\n", __func__, |
179 | hdr->minorversion, hdr->nops); | |
1da177e4 LT |
180 | return 0; |
181 | } | |
182 | ||
e6f684f6 | 183 | static __be32 decode_op_hdr(struct xdr_stream *xdr, unsigned int *op) |
1da177e4 | 184 | { |
5704fdeb | 185 | __be32 *p; |
1da177e4 LT |
186 | p = read_buf(xdr, 4); |
187 | if (unlikely(p == NULL)) | |
31d2b435 | 188 | return htonl(NFS4ERR_RESOURCE_HDR); |
1da177e4 LT |
189 | *op = ntohl(*p); |
190 | return 0; | |
191 | } | |
192 | ||
e6f684f6 | 193 | static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_getattrargs *args) |
1da177e4 | 194 | { |
e6f684f6 | 195 | __be32 status; |
1da177e4 LT |
196 | |
197 | status = decode_fh(xdr, &args->fh); | |
198 | if (unlikely(status != 0)) | |
199 | goto out; | |
671beed7 | 200 | args->addr = svc_addr(rqstp); |
1da177e4 LT |
201 | status = decode_bitmap(xdr, args->bitmap); |
202 | out: | |
3110ff80 | 203 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
1da177e4 LT |
204 | return status; |
205 | } | |
206 | ||
e6f684f6 | 207 | static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_recallargs *args) |
1da177e4 | 208 | { |
5704fdeb | 209 | __be32 *p; |
e6f684f6 | 210 | __be32 status; |
1da177e4 | 211 | |
c1d35866 | 212 | args->addr = svc_addr(rqstp); |
1da177e4 LT |
213 | status = decode_stateid(xdr, &args->stateid); |
214 | if (unlikely(status != 0)) | |
215 | goto out; | |
216 | p = read_buf(xdr, 4); | |
217 | if (unlikely(p == NULL)) { | |
218 | status = htonl(NFS4ERR_RESOURCE); | |
219 | goto out; | |
220 | } | |
221 | args->truncate = ntohl(*p); | |
222 | status = decode_fh(xdr, &args->fh); | |
223 | out: | |
3110ff80 | 224 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
3873bc50 | 225 | return status; |
1da177e4 LT |
226 | } |
227 | ||
4aece6a1 BH |
228 | #if defined(CONFIG_NFS_V4_1) |
229 | ||
f2a62561 FI |
230 | static __be32 decode_layoutrecall_args(struct svc_rqst *rqstp, |
231 | struct xdr_stream *xdr, | |
232 | struct cb_layoutrecallargs *args) | |
233 | { | |
234 | __be32 *p; | |
235 | __be32 status = 0; | |
236 | uint32_t iomode; | |
237 | ||
238 | args->cbl_addr = svc_addr(rqstp); | |
239 | p = read_buf(xdr, 4 * sizeof(uint32_t)); | |
240 | if (unlikely(p == NULL)) { | |
241 | status = htonl(NFS4ERR_BADXDR); | |
242 | goto out; | |
243 | } | |
244 | ||
245 | args->cbl_layout_type = ntohl(*p++); | |
246 | /* Depite the spec's xdr, iomode really belongs in the FILE switch, | |
25985edc | 247 | * as it is unusable and ignored with the other types. |
f2a62561 FI |
248 | */ |
249 | iomode = ntohl(*p++); | |
250 | args->cbl_layoutchanged = ntohl(*p++); | |
251 | args->cbl_recall_type = ntohl(*p++); | |
252 | ||
253 | if (args->cbl_recall_type == RETURN_FILE) { | |
254 | args->cbl_range.iomode = iomode; | |
255 | status = decode_fh(xdr, &args->cbl_fh); | |
256 | if (unlikely(status != 0)) | |
257 | goto out; | |
258 | ||
259 | p = read_buf(xdr, 2 * sizeof(uint64_t)); | |
260 | if (unlikely(p == NULL)) { | |
261 | status = htonl(NFS4ERR_BADXDR); | |
262 | goto out; | |
263 | } | |
264 | p = xdr_decode_hyper(p, &args->cbl_range.offset); | |
265 | p = xdr_decode_hyper(p, &args->cbl_range.length); | |
266 | status = decode_stateid(xdr, &args->cbl_stateid); | |
267 | if (unlikely(status != 0)) | |
268 | goto out; | |
269 | } else if (args->cbl_recall_type == RETURN_FSID) { | |
270 | p = read_buf(xdr, 2 * sizeof(uint64_t)); | |
271 | if (unlikely(p == NULL)) { | |
272 | status = htonl(NFS4ERR_BADXDR); | |
273 | goto out; | |
274 | } | |
275 | p = xdr_decode_hyper(p, &args->cbl_fsid.major); | |
276 | p = xdr_decode_hyper(p, &args->cbl_fsid.minor); | |
277 | } else if (args->cbl_recall_type != RETURN_ALL) { | |
278 | status = htonl(NFS4ERR_BADXDR); | |
279 | goto out; | |
280 | } | |
281 | dprintk("%s: ltype 0x%x iomode %d changed %d recall_type %d\n", | |
282 | __func__, | |
283 | args->cbl_layout_type, iomode, | |
284 | args->cbl_layoutchanged, args->cbl_recall_type); | |
285 | out: | |
286 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
287 | return status; | |
288 | } | |
289 | ||
1be5683b ME |
290 | static |
291 | __be32 decode_devicenotify_args(struct svc_rqst *rqstp, | |
292 | struct xdr_stream *xdr, | |
293 | struct cb_devicenotifyargs *args) | |
294 | { | |
295 | __be32 *p; | |
296 | __be32 status = 0; | |
297 | u32 tmp; | |
298 | int n, i; | |
299 | args->ndevs = 0; | |
300 | ||
301 | /* Num of device notifications */ | |
302 | p = read_buf(xdr, sizeof(uint32_t)); | |
303 | if (unlikely(p == NULL)) { | |
304 | status = htonl(NFS4ERR_BADXDR); | |
305 | goto out; | |
306 | } | |
307 | n = ntohl(*p++); | |
308 | if (n <= 0) | |
309 | goto out; | |
363e0df0 DC |
310 | if (n > ULONG_MAX / sizeof(*args->devs)) { |
311 | status = htonl(NFS4ERR_BADXDR); | |
312 | goto out; | |
313 | } | |
1be5683b ME |
314 | |
315 | args->devs = kmalloc(n * sizeof(*args->devs), GFP_KERNEL); | |
316 | if (!args->devs) { | |
317 | status = htonl(NFS4ERR_DELAY); | |
318 | goto out; | |
319 | } | |
320 | ||
321 | /* Decode each dev notification */ | |
322 | for (i = 0; i < n; i++) { | |
323 | struct cb_devicenotifyitem *dev = &args->devs[i]; | |
324 | ||
325 | p = read_buf(xdr, (4 * sizeof(uint32_t)) + NFS4_DEVICEID4_SIZE); | |
326 | if (unlikely(p == NULL)) { | |
327 | status = htonl(NFS4ERR_BADXDR); | |
328 | goto err; | |
329 | } | |
330 | ||
331 | tmp = ntohl(*p++); /* bitmap size */ | |
332 | if (tmp != 1) { | |
333 | status = htonl(NFS4ERR_INVAL); | |
334 | goto err; | |
335 | } | |
336 | dev->cbd_notify_type = ntohl(*p++); | |
337 | if (dev->cbd_notify_type != NOTIFY_DEVICEID4_CHANGE && | |
338 | dev->cbd_notify_type != NOTIFY_DEVICEID4_DELETE) { | |
339 | status = htonl(NFS4ERR_INVAL); | |
340 | goto err; | |
341 | } | |
342 | ||
343 | tmp = ntohl(*p++); /* opaque size */ | |
344 | if (((dev->cbd_notify_type == NOTIFY_DEVICEID4_CHANGE) && | |
345 | (tmp != NFS4_DEVICEID4_SIZE + 8)) || | |
346 | ((dev->cbd_notify_type == NOTIFY_DEVICEID4_DELETE) && | |
347 | (tmp != NFS4_DEVICEID4_SIZE + 4))) { | |
348 | status = htonl(NFS4ERR_INVAL); | |
349 | goto err; | |
350 | } | |
351 | dev->cbd_layout_type = ntohl(*p++); | |
352 | memcpy(dev->cbd_dev_id.data, p, NFS4_DEVICEID4_SIZE); | |
353 | p += XDR_QUADLEN(NFS4_DEVICEID4_SIZE); | |
354 | ||
355 | if (dev->cbd_layout_type == NOTIFY_DEVICEID4_CHANGE) { | |
356 | p = read_buf(xdr, sizeof(uint32_t)); | |
357 | if (unlikely(p == NULL)) { | |
358 | status = htonl(NFS4ERR_BADXDR); | |
359 | goto err; | |
360 | } | |
361 | dev->cbd_immediate = ntohl(*p++); | |
362 | } else { | |
363 | dev->cbd_immediate = 0; | |
364 | } | |
365 | ||
366 | args->ndevs++; | |
367 | ||
368 | dprintk("%s: type %d layout 0x%x immediate %d\n", | |
369 | __func__, dev->cbd_notify_type, dev->cbd_layout_type, | |
370 | dev->cbd_immediate); | |
371 | } | |
372 | out: | |
373 | dprintk("%s: status %d ndevs %d\n", | |
374 | __func__, ntohl(status), args->ndevs); | |
375 | return status; | |
376 | err: | |
377 | kfree(args->devs); | |
378 | goto out; | |
379 | } | |
380 | ||
9733f0d9 | 381 | static __be32 decode_sessionid(struct xdr_stream *xdr, |
4aece6a1 BH |
382 | struct nfs4_sessionid *sid) |
383 | { | |
9733f0d9 | 384 | __be32 *p; |
4aece6a1 BH |
385 | int len = NFS4_MAX_SESSIONID_LEN; |
386 | ||
387 | p = read_buf(xdr, len); | |
388 | if (unlikely(p == NULL)) | |
a419aef8 | 389 | return htonl(NFS4ERR_RESOURCE); |
4aece6a1 BH |
390 | |
391 | memcpy(sid->data, p, len); | |
392 | return 0; | |
393 | } | |
394 | ||
9733f0d9 | 395 | static __be32 decode_rc_list(struct xdr_stream *xdr, |
4aece6a1 BH |
396 | struct referring_call_list *rc_list) |
397 | { | |
9733f0d9 | 398 | __be32 *p; |
4aece6a1 | 399 | int i; |
9733f0d9 | 400 | __be32 status; |
4aece6a1 BH |
401 | |
402 | status = decode_sessionid(xdr, &rc_list->rcl_sessionid); | |
403 | if (status) | |
404 | goto out; | |
405 | ||
406 | status = htonl(NFS4ERR_RESOURCE); | |
407 | p = read_buf(xdr, sizeof(uint32_t)); | |
408 | if (unlikely(p == NULL)) | |
409 | goto out; | |
410 | ||
411 | rc_list->rcl_nrefcalls = ntohl(*p++); | |
412 | if (rc_list->rcl_nrefcalls) { | |
413 | p = read_buf(xdr, | |
414 | rc_list->rcl_nrefcalls * 2 * sizeof(uint32_t)); | |
415 | if (unlikely(p == NULL)) | |
416 | goto out; | |
417 | rc_list->rcl_refcalls = kmalloc(rc_list->rcl_nrefcalls * | |
418 | sizeof(*rc_list->rcl_refcalls), | |
419 | GFP_KERNEL); | |
420 | if (unlikely(rc_list->rcl_refcalls == NULL)) | |
421 | goto out; | |
422 | for (i = 0; i < rc_list->rcl_nrefcalls; i++) { | |
423 | rc_list->rcl_refcalls[i].rc_sequenceid = ntohl(*p++); | |
424 | rc_list->rcl_refcalls[i].rc_slotid = ntohl(*p++); | |
425 | } | |
426 | } | |
427 | status = 0; | |
428 | ||
429 | out: | |
430 | return status; | |
431 | } | |
432 | ||
9733f0d9 | 433 | static __be32 decode_cb_sequence_args(struct svc_rqst *rqstp, |
4aece6a1 BH |
434 | struct xdr_stream *xdr, |
435 | struct cb_sequenceargs *args) | |
436 | { | |
9733f0d9 | 437 | __be32 *p; |
4aece6a1 | 438 | int i; |
9733f0d9 | 439 | __be32 status; |
4aece6a1 BH |
440 | |
441 | status = decode_sessionid(xdr, &args->csa_sessionid); | |
442 | if (status) | |
443 | goto out; | |
444 | ||
445 | status = htonl(NFS4ERR_RESOURCE); | |
446 | p = read_buf(xdr, 5 * sizeof(uint32_t)); | |
447 | if (unlikely(p == NULL)) | |
448 | goto out; | |
449 | ||
65fc64e5 | 450 | args->csa_addr = svc_addr(rqstp); |
4aece6a1 BH |
451 | args->csa_sequenceid = ntohl(*p++); |
452 | args->csa_slotid = ntohl(*p++); | |
453 | args->csa_highestslotid = ntohl(*p++); | |
454 | args->csa_cachethis = ntohl(*p++); | |
455 | args->csa_nrclists = ntohl(*p++); | |
456 | args->csa_rclists = NULL; | |
457 | if (args->csa_nrclists) { | |
0439f31c DC |
458 | args->csa_rclists = kmalloc_array(args->csa_nrclists, |
459 | sizeof(*args->csa_rclists), | |
460 | GFP_KERNEL); | |
4aece6a1 BH |
461 | if (unlikely(args->csa_rclists == NULL)) |
462 | goto out; | |
463 | ||
464 | for (i = 0; i < args->csa_nrclists; i++) { | |
465 | status = decode_rc_list(xdr, &args->csa_rclists[i]); | |
466 | if (status) | |
467 | goto out_free; | |
468 | } | |
469 | } | |
470 | status = 0; | |
471 | ||
472 | dprintk("%s: sessionid %x:%x:%x:%x sequenceid %u slotid %u " | |
473 | "highestslotid %u cachethis %d nrclists %u\n", | |
474 | __func__, | |
475 | ((u32 *)&args->csa_sessionid)[0], | |
476 | ((u32 *)&args->csa_sessionid)[1], | |
477 | ((u32 *)&args->csa_sessionid)[2], | |
478 | ((u32 *)&args->csa_sessionid)[3], | |
479 | args->csa_sequenceid, args->csa_slotid, | |
480 | args->csa_highestslotid, args->csa_cachethis, | |
481 | args->csa_nrclists); | |
482 | out: | |
483 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
484 | return status; | |
485 | ||
486 | out_free: | |
487 | for (i = 0; i < args->csa_nrclists; i++) | |
488 | kfree(args->csa_rclists[i].rcl_refcalls); | |
489 | kfree(args->csa_rclists); | |
490 | goto out; | |
491 | } | |
492 | ||
9733f0d9 | 493 | static __be32 decode_recallany_args(struct svc_rqst *rqstp, |
31f09607 AB |
494 | struct xdr_stream *xdr, |
495 | struct cb_recallanyargs *args) | |
496 | { | |
d743c3c9 PT |
497 | uint32_t bitmap[2]; |
498 | __be32 *p, status; | |
31f09607 AB |
499 | |
500 | args->craa_addr = svc_addr(rqstp); | |
501 | p = read_buf(xdr, 4); | |
502 | if (unlikely(p == NULL)) | |
503 | return htonl(NFS4ERR_BADXDR); | |
504 | args->craa_objs_to_keep = ntohl(*p++); | |
d743c3c9 PT |
505 | status = decode_bitmap(xdr, bitmap); |
506 | if (unlikely(status)) | |
507 | return status; | |
508 | args->craa_type_mask = bitmap[0]; | |
31f09607 AB |
509 | |
510 | return 0; | |
511 | } | |
512 | ||
9733f0d9 | 513 | static __be32 decode_recallslot_args(struct svc_rqst *rqstp, |
b9efa1b2 AA |
514 | struct xdr_stream *xdr, |
515 | struct cb_recallslotargs *args) | |
516 | { | |
517 | __be32 *p; | |
518 | ||
519 | args->crsa_addr = svc_addr(rqstp); | |
520 | p = read_buf(xdr, 4); | |
521 | if (unlikely(p == NULL)) | |
522 | return htonl(NFS4ERR_BADXDR); | |
523 | args->crsa_target_max_slots = ntohl(*p++); | |
524 | return 0; | |
525 | } | |
526 | ||
4aece6a1 BH |
527 | #endif /* CONFIG_NFS_V4_1 */ |
528 | ||
e6f684f6 | 529 | static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) |
1da177e4 | 530 | { |
5704fdeb | 531 | __be32 *p; |
1da177e4 LT |
532 | |
533 | p = xdr_reserve_space(xdr, 4 + len); | |
534 | if (unlikely(p == NULL)) | |
535 | return htonl(NFS4ERR_RESOURCE); | |
536 | xdr_encode_opaque(p, str, len); | |
537 | return 0; | |
538 | } | |
539 | ||
540 | #define CB_SUPPORTED_ATTR0 (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) | |
541 | #define CB_SUPPORTED_ATTR1 (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) | |
5704fdeb | 542 | static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, __be32 **savep) |
1da177e4 | 543 | { |
5704fdeb AV |
544 | __be32 bm[2]; |
545 | __be32 *p; | |
1da177e4 LT |
546 | |
547 | bm[0] = htonl(bitmap[0] & CB_SUPPORTED_ATTR0); | |
548 | bm[1] = htonl(bitmap[1] & CB_SUPPORTED_ATTR1); | |
549 | if (bm[1] != 0) { | |
550 | p = xdr_reserve_space(xdr, 16); | |
551 | if (unlikely(p == NULL)) | |
552 | return htonl(NFS4ERR_RESOURCE); | |
553 | *p++ = htonl(2); | |
554 | *p++ = bm[0]; | |
555 | *p++ = bm[1]; | |
556 | } else if (bm[0] != 0) { | |
557 | p = xdr_reserve_space(xdr, 12); | |
558 | if (unlikely(p == NULL)) | |
559 | return htonl(NFS4ERR_RESOURCE); | |
560 | *p++ = htonl(1); | |
561 | *p++ = bm[0]; | |
562 | } else { | |
563 | p = xdr_reserve_space(xdr, 8); | |
564 | if (unlikely(p == NULL)) | |
565 | return htonl(NFS4ERR_RESOURCE); | |
566 | *p++ = htonl(0); | |
567 | } | |
568 | *savep = p; | |
569 | return 0; | |
570 | } | |
571 | ||
e6f684f6 | 572 | static __be32 encode_attr_change(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t change) |
1da177e4 | 573 | { |
5704fdeb | 574 | __be32 *p; |
1da177e4 LT |
575 | |
576 | if (!(bitmap[0] & FATTR4_WORD0_CHANGE)) | |
577 | return 0; | |
578 | p = xdr_reserve_space(xdr, 8); | |
90dc7d27 | 579 | if (unlikely(!p)) |
1da177e4 LT |
580 | return htonl(NFS4ERR_RESOURCE); |
581 | p = xdr_encode_hyper(p, change); | |
582 | return 0; | |
583 | } | |
584 | ||
e6f684f6 | 585 | static __be32 encode_attr_size(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t size) |
1da177e4 | 586 | { |
5704fdeb | 587 | __be32 *p; |
1da177e4 LT |
588 | |
589 | if (!(bitmap[0] & FATTR4_WORD0_SIZE)) | |
590 | return 0; | |
591 | p = xdr_reserve_space(xdr, 8); | |
90dc7d27 | 592 | if (unlikely(!p)) |
1da177e4 LT |
593 | return htonl(NFS4ERR_RESOURCE); |
594 | p = xdr_encode_hyper(p, size); | |
595 | return 0; | |
596 | } | |
597 | ||
e6f684f6 | 598 | static __be32 encode_attr_time(struct xdr_stream *xdr, const struct timespec *time) |
1da177e4 | 599 | { |
5704fdeb | 600 | __be32 *p; |
1da177e4 LT |
601 | |
602 | p = xdr_reserve_space(xdr, 12); | |
90dc7d27 | 603 | if (unlikely(!p)) |
1da177e4 LT |
604 | return htonl(NFS4ERR_RESOURCE); |
605 | p = xdr_encode_hyper(p, time->tv_sec); | |
606 | *p = htonl(time->tv_nsec); | |
607 | return 0; | |
608 | } | |
609 | ||
e6f684f6 | 610 | static __be32 encode_attr_ctime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) |
1da177e4 LT |
611 | { |
612 | if (!(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) | |
613 | return 0; | |
614 | return encode_attr_time(xdr,time); | |
615 | } | |
616 | ||
e6f684f6 | 617 | static __be32 encode_attr_mtime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) |
1da177e4 LT |
618 | { |
619 | if (!(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) | |
620 | return 0; | |
621 | return encode_attr_time(xdr,time); | |
622 | } | |
623 | ||
e6f684f6 | 624 | static __be32 encode_compound_hdr_res(struct xdr_stream *xdr, struct cb_compound_hdr_res *hdr) |
1da177e4 | 625 | { |
e6f684f6 | 626 | __be32 status; |
1da177e4 LT |
627 | |
628 | hdr->status = xdr_reserve_space(xdr, 4); | |
629 | if (unlikely(hdr->status == NULL)) | |
630 | return htonl(NFS4ERR_RESOURCE); | |
631 | status = encode_string(xdr, hdr->taglen, hdr->tag); | |
632 | if (unlikely(status != 0)) | |
633 | return status; | |
634 | hdr->nops = xdr_reserve_space(xdr, 4); | |
635 | if (unlikely(hdr->nops == NULL)) | |
636 | return htonl(NFS4ERR_RESOURCE); | |
637 | return 0; | |
638 | } | |
639 | ||
e6f684f6 | 640 | static __be32 encode_op_hdr(struct xdr_stream *xdr, uint32_t op, __be32 res) |
1da177e4 | 641 | { |
5704fdeb | 642 | __be32 *p; |
1da177e4 LT |
643 | |
644 | p = xdr_reserve_space(xdr, 8); | |
645 | if (unlikely(p == NULL)) | |
31d2b435 | 646 | return htonl(NFS4ERR_RESOURCE_HDR); |
1da177e4 LT |
647 | *p++ = htonl(op); |
648 | *p = res; | |
649 | return 0; | |
650 | } | |
651 | ||
e6f684f6 | 652 | static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, const struct cb_getattrres *res) |
1da177e4 | 653 | { |
5704fdeb | 654 | __be32 *savep = NULL; |
e6f684f6 | 655 | __be32 status = res->status; |
1da177e4 LT |
656 | |
657 | if (unlikely(status != 0)) | |
658 | goto out; | |
659 | status = encode_attr_bitmap(xdr, res->bitmap, &savep); | |
660 | if (unlikely(status != 0)) | |
661 | goto out; | |
662 | status = encode_attr_change(xdr, res->bitmap, res->change_attr); | |
663 | if (unlikely(status != 0)) | |
664 | goto out; | |
665 | status = encode_attr_size(xdr, res->bitmap, res->size); | |
666 | if (unlikely(status != 0)) | |
667 | goto out; | |
668 | status = encode_attr_ctime(xdr, res->bitmap, &res->ctime); | |
669 | if (unlikely(status != 0)) | |
670 | goto out; | |
671 | status = encode_attr_mtime(xdr, res->bitmap, &res->mtime); | |
672 | *savep = htonl((unsigned int)((char *)xdr->p - (char *)(savep+1))); | |
673 | out: | |
3110ff80 | 674 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
1da177e4 LT |
675 | return status; |
676 | } | |
677 | ||
34bc47c9 BH |
678 | #if defined(CONFIG_NFS_V4_1) |
679 | ||
9733f0d9 | 680 | static __be32 encode_sessionid(struct xdr_stream *xdr, |
4aece6a1 BH |
681 | const struct nfs4_sessionid *sid) |
682 | { | |
9733f0d9 | 683 | __be32 *p; |
4aece6a1 BH |
684 | int len = NFS4_MAX_SESSIONID_LEN; |
685 | ||
686 | p = xdr_reserve_space(xdr, len); | |
687 | if (unlikely(p == NULL)) | |
688 | return htonl(NFS4ERR_RESOURCE); | |
689 | ||
690 | memcpy(p, sid, len); | |
691 | return 0; | |
692 | } | |
693 | ||
9733f0d9 | 694 | static __be32 encode_cb_sequence_res(struct svc_rqst *rqstp, |
4aece6a1 BH |
695 | struct xdr_stream *xdr, |
696 | const struct cb_sequenceres *res) | |
697 | { | |
9733f0d9 | 698 | __be32 *p; |
e216c8c7 | 699 | __be32 status = res->csr_status; |
4aece6a1 BH |
700 | |
701 | if (unlikely(status != 0)) | |
702 | goto out; | |
703 | ||
704 | encode_sessionid(xdr, &res->csr_sessionid); | |
705 | ||
706 | p = xdr_reserve_space(xdr, 4 * sizeof(uint32_t)); | |
707 | if (unlikely(p == NULL)) | |
708 | return htonl(NFS4ERR_RESOURCE); | |
709 | ||
710 | *p++ = htonl(res->csr_sequenceid); | |
711 | *p++ = htonl(res->csr_slotid); | |
712 | *p++ = htonl(res->csr_highestslotid); | |
713 | *p++ = htonl(res->csr_target_highestslotid); | |
714 | out: | |
715 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
716 | return status; | |
717 | } | |
718 | ||
34bc47c9 BH |
719 | static __be32 |
720 | preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) | |
721 | { | |
281fe15d BH |
722 | if (op_nr == OP_CB_SEQUENCE) { |
723 | if (nop != 0) | |
724 | return htonl(NFS4ERR_SEQUENCE_POS); | |
725 | } else { | |
726 | if (nop == 0) | |
727 | return htonl(NFS4ERR_OP_NOT_IN_SESSION); | |
728 | } | |
729 | ||
34bc47c9 BH |
730 | switch (op_nr) { |
731 | case OP_CB_GETATTR: | |
732 | case OP_CB_RECALL: | |
4aece6a1 | 733 | case OP_CB_SEQUENCE: |
31f09607 | 734 | case OP_CB_RECALL_ANY: |
b9efa1b2 | 735 | case OP_CB_RECALL_SLOT: |
f2a62561 | 736 | case OP_CB_LAYOUTRECALL: |
1be5683b | 737 | case OP_CB_NOTIFY_DEVICEID: |
34bc47c9 BH |
738 | *op = &callback_ops[op_nr]; |
739 | break; | |
740 | ||
34bc47c9 BH |
741 | case OP_CB_NOTIFY: |
742 | case OP_CB_PUSH_DELEG: | |
34bc47c9 | 743 | case OP_CB_RECALLABLE_OBJ_AVAIL: |
34bc47c9 BH |
744 | case OP_CB_WANTS_CANCELLED: |
745 | case OP_CB_NOTIFY_LOCK: | |
746 | return htonl(NFS4ERR_NOTSUPP); | |
747 | ||
748 | default: | |
749 | return htonl(NFS4ERR_OP_ILLEGAL); | |
750 | } | |
751 | ||
752 | return htonl(NFS_OK); | |
753 | } | |
754 | ||
42acd021 AA |
755 | static void nfs4_callback_free_slot(struct nfs4_session *session) |
756 | { | |
757 | struct nfs4_slot_table *tbl = &session->bc_slot_table; | |
758 | ||
759 | spin_lock(&tbl->slot_tbl_lock); | |
760 | /* | |
761 | * Let the state manager know callback processing done. | |
762 | * A single slot, so highest used slotid is either 0 or -1 | |
763 | */ | |
45d43c29 | 764 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
42acd021 AA |
765 | nfs4_check_drain_bc_complete(session); |
766 | spin_unlock(&tbl->slot_tbl_lock); | |
767 | } | |
768 | ||
55a67399 | 769 | static void nfs4_cb_free_slot(struct cb_process_state *cps) |
42acd021 | 770 | { |
45d43c29 | 771 | if (cps->slotid != NFS4_NO_SLOT) |
55a67399 | 772 | nfs4_callback_free_slot(cps->clp->cl_session); |
42acd021 AA |
773 | } |
774 | ||
34bc47c9 BH |
775 | #else /* CONFIG_NFS_V4_1 */ |
776 | ||
777 | static __be32 | |
778 | preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) | |
779 | { | |
780 | return htonl(NFS4ERR_MINOR_VERS_MISMATCH); | |
781 | } | |
782 | ||
55a67399 | 783 | static void nfs4_cb_free_slot(struct cb_process_state *cps) |
42acd021 AA |
784 | { |
785 | } | |
34bc47c9 BH |
786 | #endif /* CONFIG_NFS_V4_1 */ |
787 | ||
788 | static __be32 | |
789 | preprocess_nfs4_op(unsigned int op_nr, struct callback_op **op) | |
790 | { | |
791 | switch (op_nr) { | |
792 | case OP_CB_GETATTR: | |
793 | case OP_CB_RECALL: | |
794 | *op = &callback_ops[op_nr]; | |
795 | break; | |
796 | default: | |
797 | return htonl(NFS4ERR_OP_ILLEGAL); | |
798 | } | |
799 | ||
800 | return htonl(NFS_OK); | |
801 | } | |
802 | ||
803 | static __be32 process_op(uint32_t minorversion, int nop, | |
804 | struct svc_rqst *rqstp, | |
1da177e4 | 805 | struct xdr_stream *xdr_in, void *argp, |
c36fca52 AA |
806 | struct xdr_stream *xdr_out, void *resp, |
807 | struct cb_process_state *cps) | |
1da177e4 | 808 | { |
a162a6b8 | 809 | struct callback_op *op = &callback_ops[0]; |
31d2b435 | 810 | unsigned int op_nr; |
34bc47c9 | 811 | __be32 status; |
1da177e4 | 812 | long maxlen; |
e6f684f6 | 813 | __be32 res; |
1da177e4 | 814 | |
3110ff80 | 815 | dprintk("%s: start\n", __func__); |
1da177e4 | 816 | status = decode_op_hdr(xdr_in, &op_nr); |
31d2b435 AA |
817 | if (unlikely(status)) |
818 | return status; | |
1da177e4 | 819 | |
34bc47c9 BH |
820 | dprintk("%s: minorversion=%d nop=%d op_nr=%u\n", |
821 | __func__, minorversion, nop, op_nr); | |
822 | ||
823 | status = minorversion ? preprocess_nfs41_op(nop, op_nr, &op) : | |
824 | preprocess_nfs4_op(op_nr, &op); | |
825 | if (status == htonl(NFS4ERR_OP_ILLEGAL)) | |
826 | op_nr = OP_CB_ILLEGAL; | |
b92b3019 AA |
827 | if (status) |
828 | goto encode_hdr; | |
31d2b435 | 829 | |
c36fca52 AA |
830 | if (cps->drc_status) { |
831 | status = cps->drc_status; | |
4911096f AA |
832 | goto encode_hdr; |
833 | } | |
834 | ||
1da177e4 LT |
835 | maxlen = xdr_out->end - xdr_out->p; |
836 | if (maxlen > 0 && maxlen < PAGE_SIZE) { | |
e95e60da AA |
837 | status = op->decode_args(rqstp, xdr_in, argp); |
838 | if (likely(status == 0)) | |
c36fca52 | 839 | status = op->process_op(argp, resp, cps); |
1da177e4 LT |
840 | } else |
841 | status = htonl(NFS4ERR_RESOURCE); | |
842 | ||
b92b3019 | 843 | encode_hdr: |
1da177e4 | 844 | res = encode_op_hdr(xdr_out, op_nr, status); |
31d2b435 AA |
845 | if (unlikely(res)) |
846 | return res; | |
1da177e4 LT |
847 | if (op->encode_res != NULL && status == 0) |
848 | status = op->encode_res(rqstp, xdr_out, resp); | |
3110ff80 | 849 | dprintk("%s: done, status = %d\n", __func__, ntohl(status)); |
1da177e4 LT |
850 | return status; |
851 | } | |
852 | ||
853 | /* | |
854 | * Decode, process and encode a COMPOUND | |
855 | */ | |
7111c66e | 856 | static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *resp) |
1da177e4 | 857 | { |
3a6258e1 TM |
858 | struct cb_compound_hdr_arg hdr_arg = { 0 }; |
859 | struct cb_compound_hdr_res hdr_res = { NULL }; | |
1da177e4 | 860 | struct xdr_stream xdr_in, xdr_out; |
c36fca52 AA |
861 | __be32 *p, status; |
862 | struct cb_process_state cps = { | |
863 | .drc_status = 0, | |
864 | .clp = NULL, | |
45d43c29 | 865 | .slotid = NFS4_NO_SLOT, |
9695c705 | 866 | .net = SVC_NET(rqstp), |
c36fca52 | 867 | }; |
3a6258e1 | 868 | unsigned int nops = 0; |
1da177e4 | 869 | |
3110ff80 | 870 | dprintk("%s: start\n", __func__); |
1da177e4 LT |
871 | |
872 | xdr_init_decode(&xdr_in, &rqstp->rq_arg, rqstp->rq_arg.head[0].iov_base); | |
873 | ||
5704fdeb | 874 | p = (__be32*)((char *)rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len); |
1da177e4 LT |
875 | xdr_init_encode(&xdr_out, &rqstp->rq_res, p); |
876 | ||
3a6258e1 TM |
877 | status = decode_compound_hdr_arg(&xdr_in, &hdr_arg); |
878 | if (status == __constant_htonl(NFS4ERR_RESOURCE)) | |
879 | return rpc_garbage_args; | |
880 | ||
c36fca52 | 881 | if (hdr_arg.minorversion == 0) { |
9695c705 | 882 | cps.clp = nfs4_find_client_ident(SVC_NET(rqstp), hdr_arg.cb_ident); |
778be232 | 883 | if (!cps.clp || !check_gss_callback_principal(cps.clp, rqstp)) |
c36fca52 | 884 | return rpc_drop_reply; |
778be232 | 885 | } |
c36fca52 | 886 | |
1da177e4 LT |
887 | hdr_res.taglen = hdr_arg.taglen; |
888 | hdr_res.tag = hdr_arg.tag; | |
3a6258e1 TM |
889 | if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0) |
890 | return rpc_system_err; | |
1da177e4 | 891 | |
3a6258e1 | 892 | while (status == 0 && nops != hdr_arg.nops) { |
4911096f | 893 | status = process_op(hdr_arg.minorversion, nops, rqstp, |
c36fca52 | 894 | &xdr_in, argp, &xdr_out, resp, &cps); |
1da177e4 LT |
895 | nops++; |
896 | } | |
3a6258e1 | 897 | |
31d2b435 AA |
898 | /* Buffer overflow in decode_ops_hdr or encode_ops_hdr. Return |
899 | * resource error in cb_compound status without returning op */ | |
900 | if (unlikely(status == htonl(NFS4ERR_RESOURCE_HDR))) { | |
901 | status = htonl(NFS4ERR_RESOURCE); | |
902 | nops--; | |
903 | } | |
904 | ||
1da177e4 LT |
905 | *hdr_res.status = status; |
906 | *hdr_res.nops = htonl(nops); | |
55a67399 | 907 | nfs4_cb_free_slot(&cps); |
c36fca52 | 908 | nfs_put_client(cps.clp); |
3110ff80 | 909 | dprintk("%s: done, status = %u\n", __func__, ntohl(status)); |
1da177e4 LT |
910 | return rpc_success; |
911 | } | |
912 | ||
913 | /* | |
914 | * Define NFS4 callback COMPOUND ops. | |
915 | */ | |
916 | static struct callback_op callback_ops[] = { | |
917 | [0] = { | |
918 | .res_maxsize = CB_OP_HDR_RES_MAXSZ, | |
919 | }, | |
920 | [OP_CB_GETATTR] = { | |
921 | .process_op = (callback_process_op_t)nfs4_callback_getattr, | |
922 | .decode_args = (callback_decode_arg_t)decode_getattr_args, | |
923 | .encode_res = (callback_encode_res_t)encode_getattr_res, | |
924 | .res_maxsize = CB_OP_GETATTR_RES_MAXSZ, | |
925 | }, | |
926 | [OP_CB_RECALL] = { | |
927 | .process_op = (callback_process_op_t)nfs4_callback_recall, | |
928 | .decode_args = (callback_decode_arg_t)decode_recall_args, | |
929 | .res_maxsize = CB_OP_RECALL_RES_MAXSZ, | |
4aece6a1 BH |
930 | }, |
931 | #if defined(CONFIG_NFS_V4_1) | |
f2a62561 FI |
932 | [OP_CB_LAYOUTRECALL] = { |
933 | .process_op = (callback_process_op_t)nfs4_callback_layoutrecall, | |
934 | .decode_args = | |
935 | (callback_decode_arg_t)decode_layoutrecall_args, | |
936 | .res_maxsize = CB_OP_LAYOUTRECALL_RES_MAXSZ, | |
937 | }, | |
1be5683b ME |
938 | [OP_CB_NOTIFY_DEVICEID] = { |
939 | .process_op = (callback_process_op_t)nfs4_callback_devicenotify, | |
940 | .decode_args = | |
941 | (callback_decode_arg_t)decode_devicenotify_args, | |
942 | .res_maxsize = CB_OP_DEVICENOTIFY_RES_MAXSZ, | |
943 | }, | |
4aece6a1 BH |
944 | [OP_CB_SEQUENCE] = { |
945 | .process_op = (callback_process_op_t)nfs4_callback_sequence, | |
946 | .decode_args = (callback_decode_arg_t)decode_cb_sequence_args, | |
947 | .encode_res = (callback_encode_res_t)encode_cb_sequence_res, | |
948 | .res_maxsize = CB_OP_SEQUENCE_RES_MAXSZ, | |
949 | }, | |
31f09607 AB |
950 | [OP_CB_RECALL_ANY] = { |
951 | .process_op = (callback_process_op_t)nfs4_callback_recallany, | |
952 | .decode_args = (callback_decode_arg_t)decode_recallany_args, | |
953 | .res_maxsize = CB_OP_RECALLANY_RES_MAXSZ, | |
954 | }, | |
b9efa1b2 AA |
955 | [OP_CB_RECALL_SLOT] = { |
956 | .process_op = (callback_process_op_t)nfs4_callback_recallslot, | |
957 | .decode_args = (callback_decode_arg_t)decode_recallslot_args, | |
958 | .res_maxsize = CB_OP_RECALLSLOT_RES_MAXSZ, | |
959 | }, | |
4aece6a1 | 960 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 LT |
961 | }; |
962 | ||
963 | /* | |
964 | * Define NFS4 callback procedures | |
965 | */ | |
966 | static struct svc_procedure nfs4_callback_procedures1[] = { | |
967 | [CB_NULL] = { | |
968 | .pc_func = nfs4_callback_null, | |
969 | .pc_decode = (kxdrproc_t)nfs4_decode_void, | |
970 | .pc_encode = (kxdrproc_t)nfs4_encode_void, | |
971 | .pc_xdrressize = 1, | |
972 | }, | |
973 | [CB_COMPOUND] = { | |
974 | .pc_func = nfs4_callback_compound, | |
975 | .pc_encode = (kxdrproc_t)nfs4_encode_void, | |
976 | .pc_argsize = 256, | |
977 | .pc_ressize = 256, | |
978 | .pc_xdrressize = NFS4_CALLBACK_BUFSIZE, | |
979 | } | |
980 | }; | |
981 | ||
982 | struct svc_version nfs4_callback_version1 = { | |
983 | .vs_vers = 1, | |
984 | .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), | |
985 | .vs_proc = nfs4_callback_procedures1, | |
986 | .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, | |
987 | .vs_dispatch = NULL, | |
49697ee7 | 988 | .vs_hidden = 1, |
1da177e4 LT |
989 | }; |
990 | ||
07bccc2d AB |
991 | struct svc_version nfs4_callback_version4 = { |
992 | .vs_vers = 4, | |
993 | .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), | |
994 | .vs_proc = nfs4_callback_procedures1, | |
995 | .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, | |
996 | .vs_dispatch = NULL, | |
6070295e | 997 | .vs_hidden = 1, |
07bccc2d | 998 | }; |