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> | |
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 | 20 | |
45724e8a KM |
21 | #define CB_OP_TAGLEN_MAXSZ (512) |
22 | #define CB_OP_HDR_RES_MAXSZ (2 * 4) // opcode, status | |
23 | #define CB_OP_GETATTR_BITMAP_MAXSZ (4 * 4) // bitmap length, 3 bitmaps | |
24 | #define CB_OP_GETATTR_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ | |
25 | CB_OP_GETATTR_BITMAP_MAXSZ + \ | |
26 | /* change, size, ctime, mtime */\ | |
27 | (2 + 2 + 3 + 3) * 4) | |
28 | #define CB_OP_RECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) | |
1da177e4 | 29 | |
4aece6a1 | 30 | #if defined(CONFIG_NFS_V4_1) |
f2a62561 | 31 | #define CB_OP_LAYOUTRECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
1be5683b | 32 | #define CB_OP_DEVICENOTIFY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
4aece6a1 | 33 | #define CB_OP_SEQUENCE_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ |
45724e8a KM |
34 | NFS4_MAX_SESSIONID_LEN + \ |
35 | (1 + 3) * 4) // seqid, 3 slotids | |
31f09607 | 36 | #define CB_OP_RECALLANY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
b9efa1b2 | 37 | #define CB_OP_RECALLSLOT_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
4aece6a1 BH |
38 | #endif /* CONFIG_NFS_V4_1 */ |
39 | ||
1da177e4 LT |
40 | #define NFSDBG_FACILITY NFSDBG_CALLBACK |
41 | ||
31d2b435 AA |
42 | /* Internal error code */ |
43 | #define NFS4ERR_RESOURCE_HDR 11050 | |
44 | ||
c36fca52 AA |
45 | typedef __be32 (*callback_process_op_t)(void *, void *, |
46 | struct cb_process_state *); | |
e6f684f6 AV |
47 | typedef __be32 (*callback_decode_arg_t)(struct svc_rqst *, struct xdr_stream *, void *); |
48 | typedef __be32 (*callback_encode_res_t)(struct svc_rqst *, struct xdr_stream *, void *); | |
1da177e4 LT |
49 | |
50 | ||
51 | struct callback_op { | |
52 | callback_process_op_t process_op; | |
53 | callback_decode_arg_t decode_args; | |
54 | callback_encode_res_t encode_res; | |
55 | long res_maxsize; | |
56 | }; | |
57 | ||
58 | static struct callback_op callback_ops[]; | |
59 | ||
7111c66e | 60 | static __be32 nfs4_callback_null(struct svc_rqst *rqstp, void *argp, void *resp) |
1da177e4 LT |
61 | { |
62 | return htonl(NFS4_OK); | |
63 | } | |
64 | ||
5704fdeb | 65 | static int nfs4_decode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
66 | { |
67 | return xdr_argsize_check(rqstp, p); | |
68 | } | |
69 | ||
5704fdeb | 70 | static int nfs4_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
71 | { |
72 | return xdr_ressize_check(rqstp, p); | |
73 | } | |
74 | ||
5704fdeb | 75 | static __be32 *read_buf(struct xdr_stream *xdr, int nbytes) |
1da177e4 | 76 | { |
5704fdeb | 77 | __be32 *p; |
1da177e4 LT |
78 | |
79 | p = xdr_inline_decode(xdr, nbytes); | |
80 | if (unlikely(p == NULL)) | |
756b9b37 | 81 | printk(KERN_WARNING "NFS: NFSv4 callback reply buffer overflowed!\n"); |
1da177e4 LT |
82 | return p; |
83 | } | |
84 | ||
e6f684f6 | 85 | static __be32 decode_string(struct xdr_stream *xdr, unsigned int *len, const char **str) |
1da177e4 | 86 | { |
5704fdeb | 87 | __be32 *p; |
1da177e4 LT |
88 | |
89 | p = read_buf(xdr, 4); | |
90 | if (unlikely(p == NULL)) | |
91 | return htonl(NFS4ERR_RESOURCE); | |
92 | *len = ntohl(*p); | |
93 | ||
94 | if (*len != 0) { | |
95 | p = read_buf(xdr, *len); | |
96 | if (unlikely(p == NULL)) | |
97 | return htonl(NFS4ERR_RESOURCE); | |
98 | *str = (const char *)p; | |
99 | } else | |
100 | *str = NULL; | |
101 | ||
102 | return 0; | |
103 | } | |
104 | ||
e6f684f6 | 105 | static __be32 decode_fh(struct xdr_stream *xdr, struct nfs_fh *fh) |
1da177e4 | 106 | { |
5704fdeb | 107 | __be32 *p; |
1da177e4 LT |
108 | |
109 | p = read_buf(xdr, 4); | |
110 | if (unlikely(p == NULL)) | |
111 | return htonl(NFS4ERR_RESOURCE); | |
112 | fh->size = ntohl(*p); | |
113 | if (fh->size > NFS4_FHSIZE) | |
114 | return htonl(NFS4ERR_BADHANDLE); | |
115 | p = read_buf(xdr, fh->size); | |
116 | if (unlikely(p == NULL)) | |
117 | return htonl(NFS4ERR_RESOURCE); | |
118 | memcpy(&fh->data[0], p, fh->size); | |
119 | memset(&fh->data[fh->size], 0, sizeof(fh->data) - fh->size); | |
120 | return 0; | |
121 | } | |
122 | ||
e6f684f6 | 123 | static __be32 decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) |
1da177e4 | 124 | { |
5704fdeb | 125 | __be32 *p; |
1da177e4 LT |
126 | unsigned int attrlen; |
127 | ||
128 | p = read_buf(xdr, 4); | |
129 | if (unlikely(p == NULL)) | |
130 | return htonl(NFS4ERR_RESOURCE); | |
131 | attrlen = ntohl(*p); | |
132 | p = read_buf(xdr, attrlen << 2); | |
133 | if (unlikely(p == NULL)) | |
134 | return htonl(NFS4ERR_RESOURCE); | |
135 | if (likely(attrlen > 0)) | |
136 | bitmap[0] = ntohl(*p++); | |
137 | if (attrlen > 1) | |
138 | bitmap[1] = ntohl(*p); | |
139 | return 0; | |
140 | } | |
141 | ||
e6f684f6 | 142 | static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) |
1da177e4 | 143 | { |
5704fdeb | 144 | __be32 *p; |
1da177e4 | 145 | |
2d2f24ad | 146 | p = read_buf(xdr, NFS4_STATEID_SIZE); |
1da177e4 LT |
147 | if (unlikely(p == NULL)) |
148 | return htonl(NFS4ERR_RESOURCE); | |
2d2f24ad | 149 | memcpy(stateid, p, NFS4_STATEID_SIZE); |
1da177e4 LT |
150 | return 0; |
151 | } | |
152 | ||
e6f684f6 | 153 | static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound_hdr_arg *hdr) |
1da177e4 | 154 | { |
5704fdeb | 155 | __be32 *p; |
e6f684f6 | 156 | __be32 status; |
1da177e4 LT |
157 | |
158 | status = decode_string(xdr, &hdr->taglen, &hdr->tag); | |
159 | if (unlikely(status != 0)) | |
160 | return status; | |
161 | /* We do not like overly long tags! */ | |
403889c0 | 162 | if (hdr->taglen > CB_OP_TAGLEN_MAXSZ) { |
a030889a | 163 | printk("NFS: NFSv4 CALLBACK %s: client sent tag of length %u\n", |
3110ff80 | 164 | __func__, hdr->taglen); |
1da177e4 LT |
165 | return htonl(NFS4ERR_RESOURCE); |
166 | } | |
167 | p = read_buf(xdr, 12); | |
168 | if (unlikely(p == NULL)) | |
169 | return htonl(NFS4ERR_RESOURCE); | |
b8f2ef84 | 170 | hdr->minorversion = ntohl(*p++); |
459de2ed BS |
171 | /* Check for minor version support */ |
172 | if (hdr->minorversion <= NFS4_MAX_MINOR_VERSION) { | |
42c2c424 | 173 | hdr->cb_ident = ntohl(*p++); /* ignored by v4.1 and v4.2 */ |
48a9e2d2 | 174 | } else { |
9a3ba432 | 175 | pr_warn_ratelimited("NFS: %s: NFSv4 server callback with " |
b8f2ef84 BH |
176 | "illegal minor version %u!\n", |
177 | __func__, hdr->minorversion); | |
1da177e4 LT |
178 | return htonl(NFS4ERR_MINOR_VERS_MISMATCH); |
179 | } | |
1da177e4 | 180 | hdr->nops = ntohl(*p); |
b8f2ef84 BH |
181 | dprintk("%s: minorversion %d nops %d\n", __func__, |
182 | hdr->minorversion, hdr->nops); | |
1da177e4 LT |
183 | return 0; |
184 | } | |
185 | ||
e6f684f6 | 186 | static __be32 decode_op_hdr(struct xdr_stream *xdr, unsigned int *op) |
1da177e4 | 187 | { |
5704fdeb | 188 | __be32 *p; |
1da177e4 LT |
189 | p = read_buf(xdr, 4); |
190 | if (unlikely(p == NULL)) | |
31d2b435 | 191 | return htonl(NFS4ERR_RESOURCE_HDR); |
1da177e4 LT |
192 | *op = ntohl(*p); |
193 | return 0; | |
194 | } | |
195 | ||
e6f684f6 | 196 | static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_getattrargs *args) |
1da177e4 | 197 | { |
e6f684f6 | 198 | __be32 status; |
1da177e4 LT |
199 | |
200 | status = decode_fh(xdr, &args->fh); | |
201 | if (unlikely(status != 0)) | |
202 | goto out; | |
1da177e4 LT |
203 | status = decode_bitmap(xdr, args->bitmap); |
204 | out: | |
3110ff80 | 205 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
1da177e4 LT |
206 | return status; |
207 | } | |
208 | ||
e6f684f6 | 209 | static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_recallargs *args) |
1da177e4 | 210 | { |
5704fdeb | 211 | __be32 *p; |
e6f684f6 | 212 | __be32 status; |
1da177e4 | 213 | |
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 | ||
f2a62561 FI |
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 | 314 | |
a4f743a6 | 315 | args->devs = kmalloc_array(n, sizeof(*args->devs), GFP_KERNEL); |
1be5683b ME |
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 | 385 | |
590184a6 | 386 | p = read_buf(xdr, NFS4_MAX_SESSIONID_LEN); |
4aece6a1 | 387 | if (unlikely(p == NULL)) |
a419aef8 | 388 | return htonl(NFS4ERR_RESOURCE); |
4aece6a1 | 389 | |
590184a6 | 390 | memcpy(sid->data, p, NFS4_MAX_SESSIONID_LEN); |
4aece6a1 BH |
391 | return 0; |
392 | } | |
393 | ||
9733f0d9 | 394 | static __be32 decode_rc_list(struct xdr_stream *xdr, |
4aece6a1 BH |
395 | struct referring_call_list *rc_list) |
396 | { | |
9733f0d9 | 397 | __be32 *p; |
4aece6a1 | 398 | int i; |
9733f0d9 | 399 | __be32 status; |
4aece6a1 BH |
400 | |
401 | status = decode_sessionid(xdr, &rc_list->rcl_sessionid); | |
402 | if (status) | |
403 | goto out; | |
404 | ||
405 | status = htonl(NFS4ERR_RESOURCE); | |
406 | p = read_buf(xdr, sizeof(uint32_t)); | |
407 | if (unlikely(p == NULL)) | |
408 | goto out; | |
409 | ||
410 | rc_list->rcl_nrefcalls = ntohl(*p++); | |
411 | if (rc_list->rcl_nrefcalls) { | |
412 | p = read_buf(xdr, | |
413 | rc_list->rcl_nrefcalls * 2 * sizeof(uint32_t)); | |
414 | if (unlikely(p == NULL)) | |
415 | goto out; | |
a4f743a6 | 416 | rc_list->rcl_refcalls = kmalloc_array(rc_list->rcl_nrefcalls, |
4aece6a1 BH |
417 | sizeof(*rc_list->rcl_refcalls), |
418 | GFP_KERNEL); | |
419 | if (unlikely(rc_list->rcl_refcalls == NULL)) | |
420 | goto out; | |
421 | for (i = 0; i < rc_list->rcl_nrefcalls; i++) { | |
422 | rc_list->rcl_refcalls[i].rc_sequenceid = ntohl(*p++); | |
423 | rc_list->rcl_refcalls[i].rc_slotid = ntohl(*p++); | |
424 | } | |
425 | } | |
426 | status = 0; | |
427 | ||
428 | out: | |
429 | return status; | |
430 | } | |
431 | ||
9733f0d9 | 432 | static __be32 decode_cb_sequence_args(struct svc_rqst *rqstp, |
4aece6a1 BH |
433 | struct xdr_stream *xdr, |
434 | struct cb_sequenceargs *args) | |
435 | { | |
9733f0d9 | 436 | __be32 *p; |
4aece6a1 | 437 | int i; |
9733f0d9 | 438 | __be32 status; |
4aece6a1 BH |
439 | |
440 | status = decode_sessionid(xdr, &args->csa_sessionid); | |
441 | if (status) | |
442 | goto out; | |
443 | ||
444 | status = htonl(NFS4ERR_RESOURCE); | |
445 | p = read_buf(xdr, 5 * sizeof(uint32_t)); | |
446 | if (unlikely(p == NULL)) | |
447 | goto out; | |
448 | ||
65fc64e5 | 449 | args->csa_addr = svc_addr(rqstp); |
4aece6a1 BH |
450 | args->csa_sequenceid = ntohl(*p++); |
451 | args->csa_slotid = ntohl(*p++); | |
452 | args->csa_highestslotid = ntohl(*p++); | |
453 | args->csa_cachethis = ntohl(*p++); | |
454 | args->csa_nrclists = ntohl(*p++); | |
455 | args->csa_rclists = NULL; | |
456 | if (args->csa_nrclists) { | |
0439f31c DC |
457 | args->csa_rclists = kmalloc_array(args->csa_nrclists, |
458 | sizeof(*args->csa_rclists), | |
459 | GFP_KERNEL); | |
4aece6a1 BH |
460 | if (unlikely(args->csa_rclists == NULL)) |
461 | goto out; | |
462 | ||
463 | for (i = 0; i < args->csa_nrclists; i++) { | |
464 | status = decode_rc_list(xdr, &args->csa_rclists[i]); | |
d8ba1f97 TM |
465 | if (status) { |
466 | args->csa_nrclists = i; | |
4aece6a1 | 467 | goto out_free; |
d8ba1f97 | 468 | } |
4aece6a1 BH |
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 | 500 | |
31f09607 AB |
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 | ||
b9efa1b2 AA |
519 | p = read_buf(xdr, 4); |
520 | if (unlikely(p == NULL)) | |
521 | return htonl(NFS4ERR_BADXDR); | |
d5fb4ce3 | 522 | args->crsa_target_highest_slotid = ntohl(*p++); |
b9efa1b2 AA |
523 | return 0; |
524 | } | |
525 | ||
4aece6a1 BH |
526 | #endif /* CONFIG_NFS_V4_1 */ |
527 | ||
e6f684f6 | 528 | static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) |
1da177e4 | 529 | { |
5704fdeb | 530 | __be32 *p; |
1da177e4 LT |
531 | |
532 | p = xdr_reserve_space(xdr, 4 + len); | |
533 | if (unlikely(p == NULL)) | |
534 | return htonl(NFS4ERR_RESOURCE); | |
535 | xdr_encode_opaque(p, str, len); | |
536 | return 0; | |
537 | } | |
538 | ||
539 | #define CB_SUPPORTED_ATTR0 (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) | |
540 | #define CB_SUPPORTED_ATTR1 (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) | |
5704fdeb | 541 | static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, __be32 **savep) |
1da177e4 | 542 | { |
5704fdeb AV |
543 | __be32 bm[2]; |
544 | __be32 *p; | |
1da177e4 LT |
545 | |
546 | bm[0] = htonl(bitmap[0] & CB_SUPPORTED_ATTR0); | |
547 | bm[1] = htonl(bitmap[1] & CB_SUPPORTED_ATTR1); | |
548 | if (bm[1] != 0) { | |
549 | p = xdr_reserve_space(xdr, 16); | |
550 | if (unlikely(p == NULL)) | |
551 | return htonl(NFS4ERR_RESOURCE); | |
552 | *p++ = htonl(2); | |
553 | *p++ = bm[0]; | |
554 | *p++ = bm[1]; | |
555 | } else if (bm[0] != 0) { | |
556 | p = xdr_reserve_space(xdr, 12); | |
557 | if (unlikely(p == NULL)) | |
558 | return htonl(NFS4ERR_RESOURCE); | |
559 | *p++ = htonl(1); | |
560 | *p++ = bm[0]; | |
561 | } else { | |
562 | p = xdr_reserve_space(xdr, 8); | |
563 | if (unlikely(p == NULL)) | |
564 | return htonl(NFS4ERR_RESOURCE); | |
565 | *p++ = htonl(0); | |
566 | } | |
567 | *savep = p; | |
568 | return 0; | |
569 | } | |
570 | ||
e6f684f6 | 571 | static __be32 encode_attr_change(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t change) |
1da177e4 | 572 | { |
5704fdeb | 573 | __be32 *p; |
1da177e4 LT |
574 | |
575 | if (!(bitmap[0] & FATTR4_WORD0_CHANGE)) | |
576 | return 0; | |
577 | p = xdr_reserve_space(xdr, 8); | |
90dc7d27 | 578 | if (unlikely(!p)) |
1da177e4 LT |
579 | return htonl(NFS4ERR_RESOURCE); |
580 | p = xdr_encode_hyper(p, change); | |
581 | return 0; | |
582 | } | |
583 | ||
e6f684f6 | 584 | static __be32 encode_attr_size(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t size) |
1da177e4 | 585 | { |
5704fdeb | 586 | __be32 *p; |
1da177e4 LT |
587 | |
588 | if (!(bitmap[0] & FATTR4_WORD0_SIZE)) | |
589 | return 0; | |
590 | p = xdr_reserve_space(xdr, 8); | |
90dc7d27 | 591 | if (unlikely(!p)) |
1da177e4 LT |
592 | return htonl(NFS4ERR_RESOURCE); |
593 | p = xdr_encode_hyper(p, size); | |
594 | return 0; | |
595 | } | |
596 | ||
e6f684f6 | 597 | static __be32 encode_attr_time(struct xdr_stream *xdr, const struct timespec *time) |
1da177e4 | 598 | { |
5704fdeb | 599 | __be32 *p; |
1da177e4 LT |
600 | |
601 | p = xdr_reserve_space(xdr, 12); | |
90dc7d27 | 602 | if (unlikely(!p)) |
1da177e4 LT |
603 | return htonl(NFS4ERR_RESOURCE); |
604 | p = xdr_encode_hyper(p, time->tv_sec); | |
605 | *p = htonl(time->tv_nsec); | |
606 | return 0; | |
607 | } | |
608 | ||
e6f684f6 | 609 | static __be32 encode_attr_ctime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) |
1da177e4 LT |
610 | { |
611 | if (!(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) | |
612 | return 0; | |
613 | return encode_attr_time(xdr,time); | |
614 | } | |
615 | ||
e6f684f6 | 616 | static __be32 encode_attr_mtime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) |
1da177e4 LT |
617 | { |
618 | if (!(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) | |
619 | return 0; | |
620 | return encode_attr_time(xdr,time); | |
621 | } | |
622 | ||
e6f684f6 | 623 | static __be32 encode_compound_hdr_res(struct xdr_stream *xdr, struct cb_compound_hdr_res *hdr) |
1da177e4 | 624 | { |
e6f684f6 | 625 | __be32 status; |
1da177e4 LT |
626 | |
627 | hdr->status = xdr_reserve_space(xdr, 4); | |
628 | if (unlikely(hdr->status == NULL)) | |
629 | return htonl(NFS4ERR_RESOURCE); | |
630 | status = encode_string(xdr, hdr->taglen, hdr->tag); | |
631 | if (unlikely(status != 0)) | |
632 | return status; | |
633 | hdr->nops = xdr_reserve_space(xdr, 4); | |
634 | if (unlikely(hdr->nops == NULL)) | |
635 | return htonl(NFS4ERR_RESOURCE); | |
636 | return 0; | |
637 | } | |
638 | ||
e6f684f6 | 639 | static __be32 encode_op_hdr(struct xdr_stream *xdr, uint32_t op, __be32 res) |
1da177e4 | 640 | { |
5704fdeb | 641 | __be32 *p; |
1da177e4 LT |
642 | |
643 | p = xdr_reserve_space(xdr, 8); | |
644 | if (unlikely(p == NULL)) | |
31d2b435 | 645 | return htonl(NFS4ERR_RESOURCE_HDR); |
1da177e4 LT |
646 | *p++ = htonl(op); |
647 | *p = res; | |
648 | return 0; | |
649 | } | |
650 | ||
e6f684f6 | 651 | static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, const struct cb_getattrres *res) |
1da177e4 | 652 | { |
5704fdeb | 653 | __be32 *savep = NULL; |
e6f684f6 | 654 | __be32 status = res->status; |
1da177e4 LT |
655 | |
656 | if (unlikely(status != 0)) | |
657 | goto out; | |
658 | status = encode_attr_bitmap(xdr, res->bitmap, &savep); | |
659 | if (unlikely(status != 0)) | |
660 | goto out; | |
661 | status = encode_attr_change(xdr, res->bitmap, res->change_attr); | |
662 | if (unlikely(status != 0)) | |
663 | goto out; | |
664 | status = encode_attr_size(xdr, res->bitmap, res->size); | |
665 | if (unlikely(status != 0)) | |
666 | goto out; | |
667 | status = encode_attr_ctime(xdr, res->bitmap, &res->ctime); | |
668 | if (unlikely(status != 0)) | |
669 | goto out; | |
670 | status = encode_attr_mtime(xdr, res->bitmap, &res->mtime); | |
671 | *savep = htonl((unsigned int)((char *)xdr->p - (char *)(savep+1))); | |
672 | out: | |
3110ff80 | 673 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
1da177e4 LT |
674 | return status; |
675 | } | |
676 | ||
34bc47c9 BH |
677 | #if defined(CONFIG_NFS_V4_1) |
678 | ||
9733f0d9 | 679 | static __be32 encode_sessionid(struct xdr_stream *xdr, |
4aece6a1 BH |
680 | const struct nfs4_sessionid *sid) |
681 | { | |
9733f0d9 | 682 | __be32 *p; |
4aece6a1 | 683 | |
590184a6 | 684 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN); |
4aece6a1 BH |
685 | if (unlikely(p == NULL)) |
686 | return htonl(NFS4ERR_RESOURCE); | |
687 | ||
590184a6 | 688 | memcpy(p, sid, NFS4_MAX_SESSIONID_LEN); |
4aece6a1 BH |
689 | return 0; |
690 | } | |
691 | ||
9733f0d9 | 692 | static __be32 encode_cb_sequence_res(struct svc_rqst *rqstp, |
4aece6a1 BH |
693 | struct xdr_stream *xdr, |
694 | const struct cb_sequenceres *res) | |
695 | { | |
9733f0d9 | 696 | __be32 *p; |
e216c8c7 | 697 | __be32 status = res->csr_status; |
4aece6a1 BH |
698 | |
699 | if (unlikely(status != 0)) | |
700 | goto out; | |
701 | ||
e0a63c0b KM |
702 | status = encode_sessionid(xdr, &res->csr_sessionid); |
703 | if (status) | |
704 | goto out; | |
4aece6a1 BH |
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 | ||
810d82e6 TM |
755 | static void nfs4_callback_free_slot(struct nfs4_session *session, |
756 | struct nfs4_slot *slot) | |
42acd021 AA |
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 | */ | |
810d82e6 | 765 | nfs4_free_slot(tbl, 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 | { |
810d82e6 TM |
772 | if (cps->slot) { |
773 | nfs4_callback_free_slot(cps->clp->cl_session, cps->slot); | |
774 | cps->slot = NULL; | |
775 | } | |
42acd021 AA |
776 | } |
777 | ||
34bc47c9 BH |
778 | #else /* CONFIG_NFS_V4_1 */ |
779 | ||
780 | static __be32 | |
781 | preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) | |
782 | { | |
783 | return htonl(NFS4ERR_MINOR_VERS_MISMATCH); | |
784 | } | |
785 | ||
55a67399 | 786 | static void nfs4_cb_free_slot(struct cb_process_state *cps) |
42acd021 AA |
787 | { |
788 | } | |
34bc47c9 BH |
789 | #endif /* CONFIG_NFS_V4_1 */ |
790 | ||
6b140b85 BS |
791 | #ifdef CONFIG_NFS_V4_2 |
792 | static __be32 | |
793 | preprocess_nfs42_op(int nop, unsigned int op_nr, struct callback_op **op) | |
794 | { | |
795 | __be32 status = preprocess_nfs41_op(nop, op_nr, op); | |
796 | if (status != htonl(NFS4ERR_OP_ILLEGAL)) | |
797 | return status; | |
798 | ||
799 | if (op_nr == OP_CB_OFFLOAD) | |
800 | return htonl(NFS4ERR_NOTSUPP); | |
801 | return htonl(NFS4ERR_OP_ILLEGAL); | |
802 | } | |
803 | #else /* CONFIG_NFS_V4_2 */ | |
804 | static __be32 | |
805 | preprocess_nfs42_op(int nop, unsigned int op_nr, struct callback_op **op) | |
806 | { | |
807 | return htonl(NFS4ERR_MINOR_VERS_MISMATCH); | |
808 | } | |
809 | #endif /* CONFIG_NFS_V4_2 */ | |
810 | ||
34bc47c9 BH |
811 | static __be32 |
812 | preprocess_nfs4_op(unsigned int op_nr, struct callback_op **op) | |
813 | { | |
814 | switch (op_nr) { | |
815 | case OP_CB_GETATTR: | |
816 | case OP_CB_RECALL: | |
817 | *op = &callback_ops[op_nr]; | |
818 | break; | |
819 | default: | |
820 | return htonl(NFS4ERR_OP_ILLEGAL); | |
821 | } | |
822 | ||
823 | return htonl(NFS_OK); | |
824 | } | |
825 | ||
459de2ed | 826 | static __be32 process_op(int nop, struct svc_rqst *rqstp, |
1da177e4 | 827 | struct xdr_stream *xdr_in, void *argp, |
c36fca52 AA |
828 | struct xdr_stream *xdr_out, void *resp, |
829 | struct cb_process_state *cps) | |
1da177e4 | 830 | { |
a162a6b8 | 831 | struct callback_op *op = &callback_ops[0]; |
31d2b435 | 832 | unsigned int op_nr; |
34bc47c9 | 833 | __be32 status; |
1da177e4 | 834 | long maxlen; |
e6f684f6 | 835 | __be32 res; |
1da177e4 | 836 | |
3110ff80 | 837 | dprintk("%s: start\n", __func__); |
1da177e4 | 838 | status = decode_op_hdr(xdr_in, &op_nr); |
31d2b435 AA |
839 | if (unlikely(status)) |
840 | return status; | |
1da177e4 | 841 | |
34bc47c9 | 842 | dprintk("%s: minorversion=%d nop=%d op_nr=%u\n", |
459de2ed | 843 | __func__, cps->minorversion, nop, op_nr); |
34bc47c9 | 844 | |
6b140b85 BS |
845 | switch (cps->minorversion) { |
846 | case 0: | |
847 | status = preprocess_nfs4_op(op_nr, &op); | |
848 | break; | |
849 | case 1: | |
850 | status = preprocess_nfs41_op(nop, op_nr, &op); | |
851 | break; | |
852 | case 2: | |
853 | status = preprocess_nfs42_op(nop, op_nr, &op); | |
854 | break; | |
855 | default: | |
856 | status = htonl(NFS4ERR_MINOR_VERS_MISMATCH); | |
857 | } | |
34bc47c9 | 858 | |
34bc47c9 BH |
859 | if (status == htonl(NFS4ERR_OP_ILLEGAL)) |
860 | op_nr = OP_CB_ILLEGAL; | |
b92b3019 AA |
861 | if (status) |
862 | goto encode_hdr; | |
31d2b435 | 863 | |
c36fca52 AA |
864 | if (cps->drc_status) { |
865 | status = cps->drc_status; | |
4911096f AA |
866 | goto encode_hdr; |
867 | } | |
868 | ||
1da177e4 LT |
869 | maxlen = xdr_out->end - xdr_out->p; |
870 | if (maxlen > 0 && maxlen < PAGE_SIZE) { | |
e95e60da AA |
871 | status = op->decode_args(rqstp, xdr_in, argp); |
872 | if (likely(status == 0)) | |
c36fca52 | 873 | status = op->process_op(argp, resp, cps); |
1da177e4 LT |
874 | } else |
875 | status = htonl(NFS4ERR_RESOURCE); | |
876 | ||
b92b3019 | 877 | encode_hdr: |
1da177e4 | 878 | res = encode_op_hdr(xdr_out, op_nr, status); |
31d2b435 AA |
879 | if (unlikely(res)) |
880 | return res; | |
1da177e4 LT |
881 | if (op->encode_res != NULL && status == 0) |
882 | status = op->encode_res(rqstp, xdr_out, resp); | |
3110ff80 | 883 | dprintk("%s: done, status = %d\n", __func__, ntohl(status)); |
1da177e4 LT |
884 | return status; |
885 | } | |
886 | ||
887 | /* | |
888 | * Decode, process and encode a COMPOUND | |
889 | */ | |
7111c66e | 890 | static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *resp) |
1da177e4 | 891 | { |
3a6258e1 TM |
892 | struct cb_compound_hdr_arg hdr_arg = { 0 }; |
893 | struct cb_compound_hdr_res hdr_res = { NULL }; | |
1da177e4 | 894 | struct xdr_stream xdr_in, xdr_out; |
c36fca52 AA |
895 | __be32 *p, status; |
896 | struct cb_process_state cps = { | |
897 | .drc_status = 0, | |
898 | .clp = NULL, | |
9695c705 | 899 | .net = SVC_NET(rqstp), |
c36fca52 | 900 | }; |
3a6258e1 | 901 | unsigned int nops = 0; |
1da177e4 | 902 | |
3110ff80 | 903 | dprintk("%s: start\n", __func__); |
1da177e4 | 904 | |
756b9b37 | 905 | xdr_init_decode(&xdr_in, &rqstp->rq_arg, rqstp->rq_arg.head[0].iov_base); |
1da177e4 | 906 | |
5704fdeb | 907 | p = (__be32*)((char *)rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len); |
1da177e4 LT |
908 | xdr_init_encode(&xdr_out, &rqstp->rq_res, p); |
909 | ||
3a6258e1 | 910 | status = decode_compound_hdr_arg(&xdr_in, &hdr_arg); |
4ed0d83d | 911 | if (status == htonl(NFS4ERR_RESOURCE)) |
3a6258e1 TM |
912 | return rpc_garbage_args; |
913 | ||
c36fca52 | 914 | if (hdr_arg.minorversion == 0) { |
9695c705 | 915 | cps.clp = nfs4_find_client_ident(SVC_NET(rqstp), hdr_arg.cb_ident); |
778be232 | 916 | if (!cps.clp || !check_gss_callback_principal(cps.clp, rqstp)) |
c36fca52 | 917 | return rpc_drop_reply; |
778be232 | 918 | } |
c36fca52 | 919 | |
459de2ed | 920 | cps.minorversion = hdr_arg.minorversion; |
1da177e4 LT |
921 | hdr_res.taglen = hdr_arg.taglen; |
922 | hdr_res.tag = hdr_arg.tag; | |
3a6258e1 TM |
923 | if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0) |
924 | return rpc_system_err; | |
1da177e4 | 925 | |
3a6258e1 | 926 | while (status == 0 && nops != hdr_arg.nops) { |
459de2ed BS |
927 | status = process_op(nops, rqstp, &xdr_in, |
928 | argp, &xdr_out, resp, &cps); | |
1da177e4 LT |
929 | nops++; |
930 | } | |
3a6258e1 | 931 | |
31d2b435 AA |
932 | /* Buffer overflow in decode_ops_hdr or encode_ops_hdr. Return |
933 | * resource error in cb_compound status without returning op */ | |
934 | if (unlikely(status == htonl(NFS4ERR_RESOURCE_HDR))) { | |
935 | status = htonl(NFS4ERR_RESOURCE); | |
936 | nops--; | |
937 | } | |
938 | ||
1da177e4 LT |
939 | *hdr_res.status = status; |
940 | *hdr_res.nops = htonl(nops); | |
55a67399 | 941 | nfs4_cb_free_slot(&cps); |
c36fca52 | 942 | nfs_put_client(cps.clp); |
3110ff80 | 943 | dprintk("%s: done, status = %u\n", __func__, ntohl(status)); |
1da177e4 LT |
944 | return rpc_success; |
945 | } | |
946 | ||
947 | /* | |
948 | * Define NFS4 callback COMPOUND ops. | |
949 | */ | |
950 | static struct callback_op callback_ops[] = { | |
951 | [0] = { | |
952 | .res_maxsize = CB_OP_HDR_RES_MAXSZ, | |
953 | }, | |
954 | [OP_CB_GETATTR] = { | |
955 | .process_op = (callback_process_op_t)nfs4_callback_getattr, | |
956 | .decode_args = (callback_decode_arg_t)decode_getattr_args, | |
957 | .encode_res = (callback_encode_res_t)encode_getattr_res, | |
958 | .res_maxsize = CB_OP_GETATTR_RES_MAXSZ, | |
959 | }, | |
960 | [OP_CB_RECALL] = { | |
961 | .process_op = (callback_process_op_t)nfs4_callback_recall, | |
962 | .decode_args = (callback_decode_arg_t)decode_recall_args, | |
963 | .res_maxsize = CB_OP_RECALL_RES_MAXSZ, | |
4aece6a1 BH |
964 | }, |
965 | #if defined(CONFIG_NFS_V4_1) | |
f2a62561 FI |
966 | [OP_CB_LAYOUTRECALL] = { |
967 | .process_op = (callback_process_op_t)nfs4_callback_layoutrecall, | |
968 | .decode_args = | |
969 | (callback_decode_arg_t)decode_layoutrecall_args, | |
970 | .res_maxsize = CB_OP_LAYOUTRECALL_RES_MAXSZ, | |
971 | }, | |
1be5683b ME |
972 | [OP_CB_NOTIFY_DEVICEID] = { |
973 | .process_op = (callback_process_op_t)nfs4_callback_devicenotify, | |
974 | .decode_args = | |
975 | (callback_decode_arg_t)decode_devicenotify_args, | |
976 | .res_maxsize = CB_OP_DEVICENOTIFY_RES_MAXSZ, | |
977 | }, | |
4aece6a1 BH |
978 | [OP_CB_SEQUENCE] = { |
979 | .process_op = (callback_process_op_t)nfs4_callback_sequence, | |
980 | .decode_args = (callback_decode_arg_t)decode_cb_sequence_args, | |
981 | .encode_res = (callback_encode_res_t)encode_cb_sequence_res, | |
982 | .res_maxsize = CB_OP_SEQUENCE_RES_MAXSZ, | |
983 | }, | |
31f09607 AB |
984 | [OP_CB_RECALL_ANY] = { |
985 | .process_op = (callback_process_op_t)nfs4_callback_recallany, | |
986 | .decode_args = (callback_decode_arg_t)decode_recallany_args, | |
987 | .res_maxsize = CB_OP_RECALLANY_RES_MAXSZ, | |
988 | }, | |
b9efa1b2 AA |
989 | [OP_CB_RECALL_SLOT] = { |
990 | .process_op = (callback_process_op_t)nfs4_callback_recallslot, | |
991 | .decode_args = (callback_decode_arg_t)decode_recallslot_args, | |
992 | .res_maxsize = CB_OP_RECALLSLOT_RES_MAXSZ, | |
993 | }, | |
4aece6a1 | 994 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 LT |
995 | }; |
996 | ||
997 | /* | |
998 | * Define NFS4 callback procedures | |
999 | */ | |
1000 | static struct svc_procedure nfs4_callback_procedures1[] = { | |
1001 | [CB_NULL] = { | |
1002 | .pc_func = nfs4_callback_null, | |
1003 | .pc_decode = (kxdrproc_t)nfs4_decode_void, | |
1004 | .pc_encode = (kxdrproc_t)nfs4_encode_void, | |
1005 | .pc_xdrressize = 1, | |
1006 | }, | |
1007 | [CB_COMPOUND] = { | |
1008 | .pc_func = nfs4_callback_compound, | |
1009 | .pc_encode = (kxdrproc_t)nfs4_encode_void, | |
1010 | .pc_argsize = 256, | |
1011 | .pc_ressize = 256, | |
1012 | .pc_xdrressize = NFS4_CALLBACK_BUFSIZE, | |
1013 | } | |
1014 | }; | |
1015 | ||
1016 | struct svc_version nfs4_callback_version1 = { | |
1017 | .vs_vers = 1, | |
1018 | .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), | |
1019 | .vs_proc = nfs4_callback_procedures1, | |
1020 | .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, | |
1021 | .vs_dispatch = NULL, | |
49697ee7 | 1022 | .vs_hidden = 1, |
1da177e4 LT |
1023 | }; |
1024 | ||
07bccc2d AB |
1025 | struct svc_version nfs4_callback_version4 = { |
1026 | .vs_vers = 4, | |
1027 | .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), | |
1028 | .vs_proc = nfs4_callback_procedures1, | |
1029 | .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, | |
1030 | .vs_dispatch = NULL, | |
6070295e | 1031 | .vs_hidden = 1, |
07bccc2d | 1032 | }; |