nfs4xdr.c 190 KB

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  1. /*
  2. * fs/nfs/nfs4xdr.c
  3. *
  4. * Client-side XDR for NFSv4.
  5. *
  6. * Copyright (c) 2002 The Regents of the University of Michigan.
  7. * All rights reserved.
  8. *
  9. * Kendrick Smith <kmsmith@umich.edu>
  10. * Andy Adamson <andros@umich.edu>
  11. *
  12. * Redistribution and use in source and binary forms, with or without
  13. * modification, are permitted provided that the following conditions
  14. * are met:
  15. *
  16. * 1. Redistributions of source code must retain the above copyright
  17. * notice, this list of conditions and the following disclaimer.
  18. * 2. Redistributions in binary form must reproduce the above copyright
  19. * notice, this list of conditions and the following disclaimer in the
  20. * documentation and/or other materials provided with the distribution.
  21. * 3. Neither the name of the University nor the names of its
  22. * contributors may be used to endorse or promote products derived
  23. * from this software without specific prior written permission.
  24. *
  25. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  26. * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  27. * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  28. * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30. * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31. * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  32. * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  33. * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  34. * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  35. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36. */
  37. #include <linux/param.h>
  38. #include <linux/time.h>
  39. #include <linux/mm.h>
  40. #include <linux/errno.h>
  41. #include <linux/string.h>
  42. #include <linux/in.h>
  43. #include <linux/pagemap.h>
  44. #include <linux/proc_fs.h>
  45. #include <linux/kdev_t.h>
  46. #include <linux/module.h>
  47. #include <linux/utsname.h>
  48. #include <linux/sunrpc/clnt.h>
  49. #include <linux/sunrpc/msg_prot.h>
  50. #include <linux/sunrpc/gss_api.h>
  51. #include <linux/nfs.h>
  52. #include <linux/nfs4.h>
  53. #include <linux/nfs_fs.h>
  54. #include <linux/nfs_idmap.h>
  55. #include "nfs4_fs.h"
  56. #include "internal.h"
  57. #include "nfs4session.h"
  58. #include "pnfs.h"
  59. #include "netns.h"
  60. #define NFSDBG_FACILITY NFSDBG_XDR
  61. /* Mapping from NFS error code to "errno" error code. */
  62. #define errno_NFSERR_IO EIO
  63. static int nfs4_stat_to_errno(int);
  64. /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
  65. #ifdef DEBUG
  66. #define NFS4_MAXTAGLEN 20
  67. #else
  68. #define NFS4_MAXTAGLEN 0
  69. #endif
  70. /* lock,open owner id:
  71. * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
  72. */
  73. #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
  74. #define lock_owner_id_maxsz (1 + 1 + 4)
  75. #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
  76. #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
  77. #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
  78. #define op_encode_hdr_maxsz (1)
  79. #define op_decode_hdr_maxsz (2)
  80. #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
  81. #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
  82. #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
  83. #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
  84. #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
  85. (NFS4_FHSIZE >> 2))
  86. #define decode_putfh_maxsz (op_decode_hdr_maxsz)
  87. #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
  88. #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
  89. #define encode_getfh_maxsz (op_encode_hdr_maxsz)
  90. #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
  91. ((3+NFS4_FHSIZE) >> 2))
  92. #define nfs4_fattr_bitmap_maxsz 4
  93. #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
  94. #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
  95. #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
  96. #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
  97. #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
  98. /* We support only one layout type per file system */
  99. #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
  100. /* This is based on getfattr, which uses the most attributes: */
  101. #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
  102. 3 + 3 + 3 + nfs4_owner_maxsz + \
  103. nfs4_group_maxsz + decode_mdsthreshold_maxsz))
  104. #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
  105. nfs4_fattr_value_maxsz)
  106. #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
  107. #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
  108. 1 + 2 + 1 + \
  109. nfs4_owner_maxsz + \
  110. nfs4_group_maxsz + \
  111. 4 + 4)
  112. #define encode_savefh_maxsz (op_encode_hdr_maxsz)
  113. #define decode_savefh_maxsz (op_decode_hdr_maxsz)
  114. #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
  115. #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
  116. #define encode_fsinfo_maxsz (encode_getattr_maxsz)
  117. /* The 5 accounts for the PNFS attributes, and assumes that at most three
  118. * layout types will be returned.
  119. */
  120. #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
  121. nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
  122. #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
  123. #define decode_renew_maxsz (op_decode_hdr_maxsz)
  124. #define encode_setclientid_maxsz \
  125. (op_encode_hdr_maxsz + \
  126. XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
  127. XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
  128. 1 /* sc_prog */ + \
  129. XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
  130. XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
  131. 1) /* sc_cb_ident */
  132. #define decode_setclientid_maxsz \
  133. (op_decode_hdr_maxsz + \
  134. 2 + \
  135. 1024) /* large value for CLID_INUSE */
  136. #define encode_setclientid_confirm_maxsz \
  137. (op_encode_hdr_maxsz + \
  138. 3 + (NFS4_VERIFIER_SIZE >> 2))
  139. #define decode_setclientid_confirm_maxsz \
  140. (op_decode_hdr_maxsz)
  141. #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
  142. #define decode_lookup_maxsz (op_decode_hdr_maxsz)
  143. #define encode_share_access_maxsz \
  144. (2)
  145. #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
  146. #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
  147. #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
  148. #define encode_open_maxsz (op_encode_hdr_maxsz + \
  149. 2 + encode_share_access_maxsz + 2 + \
  150. open_owner_id_maxsz + \
  151. encode_opentype_maxsz + \
  152. encode_claim_null_maxsz)
  153. #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
  154. #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
  155. decode_ace_maxsz)
  156. #define decode_change_info_maxsz (5)
  157. #define decode_open_maxsz (op_decode_hdr_maxsz + \
  158. decode_stateid_maxsz + \
  159. decode_change_info_maxsz + 1 + \
  160. nfs4_fattr_bitmap_maxsz + \
  161. decode_delegation_maxsz)
  162. #define encode_open_confirm_maxsz \
  163. (op_encode_hdr_maxsz + \
  164. encode_stateid_maxsz + 1)
  165. #define decode_open_confirm_maxsz \
  166. (op_decode_hdr_maxsz + \
  167. decode_stateid_maxsz)
  168. #define encode_open_downgrade_maxsz \
  169. (op_encode_hdr_maxsz + \
  170. encode_stateid_maxsz + 1 + \
  171. encode_share_access_maxsz)
  172. #define decode_open_downgrade_maxsz \
  173. (op_decode_hdr_maxsz + \
  174. decode_stateid_maxsz)
  175. #define encode_close_maxsz (op_encode_hdr_maxsz + \
  176. 1 + encode_stateid_maxsz)
  177. #define decode_close_maxsz (op_decode_hdr_maxsz + \
  178. decode_stateid_maxsz)
  179. #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
  180. encode_stateid_maxsz + \
  181. encode_attrs_maxsz)
  182. #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
  183. nfs4_fattr_bitmap_maxsz)
  184. #define encode_read_maxsz (op_encode_hdr_maxsz + \
  185. encode_stateid_maxsz + 3)
  186. #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
  187. #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
  188. 2 + encode_verifier_maxsz + 5)
  189. #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
  190. decode_verifier_maxsz)
  191. #define encode_readlink_maxsz (op_encode_hdr_maxsz)
  192. #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
  193. #define encode_write_maxsz (op_encode_hdr_maxsz + \
  194. encode_stateid_maxsz + 4)
  195. #define decode_write_maxsz (op_decode_hdr_maxsz + \
  196. 2 + decode_verifier_maxsz)
  197. #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
  198. #define decode_commit_maxsz (op_decode_hdr_maxsz + \
  199. decode_verifier_maxsz)
  200. #define encode_remove_maxsz (op_encode_hdr_maxsz + \
  201. nfs4_name_maxsz)
  202. #define decode_remove_maxsz (op_decode_hdr_maxsz + \
  203. decode_change_info_maxsz)
  204. #define encode_rename_maxsz (op_encode_hdr_maxsz + \
  205. 2 * nfs4_name_maxsz)
  206. #define decode_rename_maxsz (op_decode_hdr_maxsz + \
  207. decode_change_info_maxsz + \
  208. decode_change_info_maxsz)
  209. #define encode_link_maxsz (op_encode_hdr_maxsz + \
  210. nfs4_name_maxsz)
  211. #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
  212. #define encode_lockowner_maxsz (7)
  213. #define encode_lock_maxsz (op_encode_hdr_maxsz + \
  214. 7 + \
  215. 1 + encode_stateid_maxsz + 1 + \
  216. encode_lockowner_maxsz)
  217. #define decode_lock_denied_maxsz \
  218. (8 + decode_lockowner_maxsz)
  219. #define decode_lock_maxsz (op_decode_hdr_maxsz + \
  220. decode_lock_denied_maxsz)
  221. #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
  222. encode_lockowner_maxsz)
  223. #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
  224. decode_lock_denied_maxsz)
  225. #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
  226. encode_stateid_maxsz + \
  227. 4)
  228. #define decode_locku_maxsz (op_decode_hdr_maxsz + \
  229. decode_stateid_maxsz)
  230. #define encode_release_lockowner_maxsz \
  231. (op_encode_hdr_maxsz + \
  232. encode_lockowner_maxsz)
  233. #define decode_release_lockowner_maxsz \
  234. (op_decode_hdr_maxsz)
  235. #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
  236. #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
  237. #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
  238. 1 + nfs4_name_maxsz + \
  239. 1 + \
  240. nfs4_fattr_maxsz)
  241. #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
  242. #define encode_create_maxsz (op_encode_hdr_maxsz + \
  243. 1 + 2 + nfs4_name_maxsz + \
  244. encode_attrs_maxsz)
  245. #define decode_create_maxsz (op_decode_hdr_maxsz + \
  246. decode_change_info_maxsz + \
  247. nfs4_fattr_bitmap_maxsz)
  248. #define encode_statfs_maxsz (encode_getattr_maxsz)
  249. #define decode_statfs_maxsz (decode_getattr_maxsz)
  250. #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
  251. #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
  252. #define encode_getacl_maxsz (encode_getattr_maxsz)
  253. #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
  254. nfs4_fattr_bitmap_maxsz + 1)
  255. #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
  256. encode_stateid_maxsz + 3)
  257. #define decode_setacl_maxsz (decode_setattr_maxsz)
  258. #define encode_fs_locations_maxsz \
  259. (encode_getattr_maxsz)
  260. #define decode_fs_locations_maxsz \
  261. (0)
  262. #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
  263. #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
  264. #if defined(CONFIG_NFS_V4_1)
  265. #define NFS4_MAX_MACHINE_NAME_LEN (64)
  266. #define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
  267. sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
  268. #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
  269. encode_verifier_maxsz + \
  270. 1 /* co_ownerid.len */ + \
  271. XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
  272. 1 /* flags */ + \
  273. 1 /* spa_how */ + \
  274. 0 /* SP4_NONE (for now) */ + \
  275. 1 /* implementation id array of size 1 */ + \
  276. 1 /* nii_domain */ + \
  277. XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
  278. 1 /* nii_name */ + \
  279. XDR_QUADLEN(IMPL_NAME_LIMIT) + \
  280. 3 /* nii_date */)
  281. #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
  282. 2 /* eir_clientid */ + \
  283. 1 /* eir_sequenceid */ + \
  284. 1 /* eir_flags */ + \
  285. 1 /* spr_how */ + \
  286. 0 /* SP4_NONE (for now) */ + \
  287. 2 /* eir_server_owner.so_minor_id */ + \
  288. /* eir_server_owner.so_major_id<> */ \
  289. XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
  290. /* eir_server_scope<> */ \
  291. XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
  292. 1 /* eir_server_impl_id array length */ + \
  293. 1 /* nii_domain */ + \
  294. XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
  295. 1 /* nii_name */ + \
  296. XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
  297. 3 /* nii_date */)
  298. #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
  299. #define decode_channel_attrs_maxsz (6 + \
  300. 1 /* ca_rdma_ird.len */ + \
  301. 1 /* ca_rdma_ird */)
  302. #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
  303. 2 /* csa_clientid */ + \
  304. 1 /* csa_sequence */ + \
  305. 1 /* csa_flags */ + \
  306. encode_channel_attrs_maxsz + \
  307. encode_channel_attrs_maxsz + \
  308. 1 /* csa_cb_program */ + \
  309. 1 /* csa_sec_parms.len (1) */ + \
  310. 1 /* cb_secflavor (AUTH_SYS) */ + \
  311. 1 /* stamp */ + \
  312. 1 /* machinename.len */ + \
  313. XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
  314. 1 /* uid */ + \
  315. 1 /* gid */ + \
  316. 1 /* gids.len (0) */)
  317. #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
  318. XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
  319. 1 /* csr_sequence */ + \
  320. 1 /* csr_flags */ + \
  321. decode_channel_attrs_maxsz + \
  322. decode_channel_attrs_maxsz)
  323. #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
  324. /* bctsa_sessid */ \
  325. XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
  326. 1 /* bctsa_dir */ + \
  327. 1 /* bctsa_use_conn_in_rdma_mode */)
  328. #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
  329. /* bctsr_sessid */ \
  330. XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
  331. 1 /* bctsr_dir */ + \
  332. 1 /* bctsr_use_conn_in_rdma_mode */)
  333. #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
  334. #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
  335. #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
  336. #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
  337. #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
  338. XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
  339. #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
  340. XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
  341. #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
  342. #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
  343. #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
  344. encode_verifier_maxsz)
  345. #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
  346. 2 /* nfs_cookie4 gdlr_cookie */ + \
  347. decode_verifier_maxsz \
  348. /* verifier4 gdlr_verifier */ + \
  349. 1 /* gdlr_deviceid_list count */ + \
  350. XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
  351. NFS4_DEVICEID4_SIZE) \
  352. /* gdlr_deviceid_list */ + \
  353. 1 /* bool gdlr_eof */)
  354. #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
  355. XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
  356. #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
  357. 1 /* layout type */ + \
  358. 1 /* opaque devaddr4 length */ + \
  359. /* devaddr4 payload is read into page */ \
  360. 1 /* notification bitmap length */ + \
  361. 1 /* notification bitmap */)
  362. #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
  363. encode_stateid_maxsz)
  364. #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
  365. decode_stateid_maxsz + \
  366. XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
  367. #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
  368. 2 /* offset */ + \
  369. 2 /* length */ + \
  370. 1 /* reclaim */ + \
  371. encode_stateid_maxsz + \
  372. 1 /* new offset (true) */ + \
  373. 2 /* last byte written */ + \
  374. 1 /* nt_timechanged (false) */ + \
  375. 1 /* layoutupdate4 layout type */ + \
  376. 1 /* NULL filelayout layoutupdate4 payload */)
  377. #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
  378. #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
  379. encode_stateid_maxsz + \
  380. 1 /* FIXME: opaque lrf_body always empty at the moment */)
  381. #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
  382. 1 + decode_stateid_maxsz)
  383. #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
  384. #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
  385. #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
  386. XDR_QUADLEN(NFS4_STATEID_SIZE))
  387. #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
  388. #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
  389. XDR_QUADLEN(NFS4_STATEID_SIZE))
  390. #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
  391. #else /* CONFIG_NFS_V4_1 */
  392. #define encode_sequence_maxsz 0
  393. #define decode_sequence_maxsz 0
  394. #endif /* CONFIG_NFS_V4_1 */
  395. #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
  396. #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
  397. #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
  398. encode_sequence_maxsz + \
  399. encode_putfh_maxsz + \
  400. encode_read_maxsz)
  401. #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
  402. decode_sequence_maxsz + \
  403. decode_putfh_maxsz + \
  404. decode_read_maxsz)
  405. #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
  406. encode_sequence_maxsz + \
  407. encode_putfh_maxsz + \
  408. encode_readlink_maxsz)
  409. #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
  410. decode_sequence_maxsz + \
  411. decode_putfh_maxsz + \
  412. decode_readlink_maxsz)
  413. #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
  414. encode_sequence_maxsz + \
  415. encode_putfh_maxsz + \
  416. encode_readdir_maxsz)
  417. #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
  418. decode_sequence_maxsz + \
  419. decode_putfh_maxsz + \
  420. decode_readdir_maxsz)
  421. #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
  422. encode_sequence_maxsz + \
  423. encode_putfh_maxsz + \
  424. encode_write_maxsz + \
  425. encode_getattr_maxsz)
  426. #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
  427. decode_sequence_maxsz + \
  428. decode_putfh_maxsz + \
  429. decode_write_maxsz + \
  430. decode_getattr_maxsz)
  431. #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
  432. encode_sequence_maxsz + \
  433. encode_putfh_maxsz + \
  434. encode_commit_maxsz)
  435. #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
  436. decode_sequence_maxsz + \
  437. decode_putfh_maxsz + \
  438. decode_commit_maxsz)
  439. #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
  440. encode_sequence_maxsz + \
  441. encode_putfh_maxsz + \
  442. encode_open_maxsz + \
  443. encode_access_maxsz + \
  444. encode_getfh_maxsz + \
  445. encode_getattr_maxsz)
  446. #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
  447. decode_sequence_maxsz + \
  448. decode_putfh_maxsz + \
  449. decode_open_maxsz + \
  450. decode_access_maxsz + \
  451. decode_getfh_maxsz + \
  452. decode_getattr_maxsz)
  453. #define NFS4_enc_open_confirm_sz \
  454. (compound_encode_hdr_maxsz + \
  455. encode_putfh_maxsz + \
  456. encode_open_confirm_maxsz)
  457. #define NFS4_dec_open_confirm_sz \
  458. (compound_decode_hdr_maxsz + \
  459. decode_putfh_maxsz + \
  460. decode_open_confirm_maxsz)
  461. #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
  462. encode_sequence_maxsz + \
  463. encode_putfh_maxsz + \
  464. encode_open_maxsz + \
  465. encode_access_maxsz + \
  466. encode_getattr_maxsz)
  467. #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
  468. decode_sequence_maxsz + \
  469. decode_putfh_maxsz + \
  470. decode_open_maxsz + \
  471. decode_access_maxsz + \
  472. decode_getattr_maxsz)
  473. #define NFS4_enc_open_downgrade_sz \
  474. (compound_encode_hdr_maxsz + \
  475. encode_sequence_maxsz + \
  476. encode_putfh_maxsz + \
  477. encode_open_downgrade_maxsz + \
  478. encode_getattr_maxsz)
  479. #define NFS4_dec_open_downgrade_sz \
  480. (compound_decode_hdr_maxsz + \
  481. decode_sequence_maxsz + \
  482. decode_putfh_maxsz + \
  483. decode_open_downgrade_maxsz + \
  484. decode_getattr_maxsz)
  485. #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
  486. encode_sequence_maxsz + \
  487. encode_putfh_maxsz + \
  488. encode_close_maxsz + \
  489. encode_getattr_maxsz)
  490. #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
  491. decode_sequence_maxsz + \
  492. decode_putfh_maxsz + \
  493. decode_close_maxsz + \
  494. decode_getattr_maxsz)
  495. #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
  496. encode_sequence_maxsz + \
  497. encode_putfh_maxsz + \
  498. encode_setattr_maxsz + \
  499. encode_getattr_maxsz)
  500. #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
  501. decode_sequence_maxsz + \
  502. decode_putfh_maxsz + \
  503. decode_setattr_maxsz + \
  504. decode_getattr_maxsz)
  505. #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
  506. encode_sequence_maxsz + \
  507. encode_putfh_maxsz + \
  508. encode_fsinfo_maxsz)
  509. #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
  510. decode_sequence_maxsz + \
  511. decode_putfh_maxsz + \
  512. decode_fsinfo_maxsz)
  513. #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
  514. encode_renew_maxsz)
  515. #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
  516. decode_renew_maxsz)
  517. #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
  518. encode_setclientid_maxsz)
  519. #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
  520. decode_setclientid_maxsz)
  521. #define NFS4_enc_setclientid_confirm_sz \
  522. (compound_encode_hdr_maxsz + \
  523. encode_setclientid_confirm_maxsz + \
  524. encode_putrootfh_maxsz + \
  525. encode_fsinfo_maxsz)
  526. #define NFS4_dec_setclientid_confirm_sz \
  527. (compound_decode_hdr_maxsz + \
  528. decode_setclientid_confirm_maxsz + \
  529. decode_putrootfh_maxsz + \
  530. decode_fsinfo_maxsz)
  531. #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
  532. encode_sequence_maxsz + \
  533. encode_putfh_maxsz + \
  534. encode_lock_maxsz)
  535. #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
  536. decode_sequence_maxsz + \
  537. decode_putfh_maxsz + \
  538. decode_lock_maxsz)
  539. #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
  540. encode_sequence_maxsz + \
  541. encode_putfh_maxsz + \
  542. encode_lockt_maxsz)
  543. #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
  544. decode_sequence_maxsz + \
  545. decode_putfh_maxsz + \
  546. decode_lockt_maxsz)
  547. #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
  548. encode_sequence_maxsz + \
  549. encode_putfh_maxsz + \
  550. encode_locku_maxsz)
  551. #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
  552. decode_sequence_maxsz + \
  553. decode_putfh_maxsz + \
  554. decode_locku_maxsz)
  555. #define NFS4_enc_release_lockowner_sz \
  556. (compound_encode_hdr_maxsz + \
  557. encode_lockowner_maxsz)
  558. #define NFS4_dec_release_lockowner_sz \
  559. (compound_decode_hdr_maxsz + \
  560. decode_lockowner_maxsz)
  561. #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
  562. encode_sequence_maxsz + \
  563. encode_putfh_maxsz + \
  564. encode_access_maxsz + \
  565. encode_getattr_maxsz)
  566. #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
  567. decode_sequence_maxsz + \
  568. decode_putfh_maxsz + \
  569. decode_access_maxsz + \
  570. decode_getattr_maxsz)
  571. #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
  572. encode_sequence_maxsz + \
  573. encode_putfh_maxsz + \
  574. encode_getattr_maxsz)
  575. #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
  576. decode_sequence_maxsz + \
  577. decode_putfh_maxsz + \
  578. decode_getattr_maxsz)
  579. #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
  580. encode_sequence_maxsz + \
  581. encode_putfh_maxsz + \
  582. encode_lookup_maxsz + \
  583. encode_getattr_maxsz + \
  584. encode_getfh_maxsz)
  585. #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
  586. decode_sequence_maxsz + \
  587. decode_putfh_maxsz + \
  588. decode_lookup_maxsz + \
  589. decode_getattr_maxsz + \
  590. decode_getfh_maxsz)
  591. #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
  592. encode_sequence_maxsz + \
  593. encode_putrootfh_maxsz + \
  594. encode_getattr_maxsz + \
  595. encode_getfh_maxsz)
  596. #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
  597. decode_sequence_maxsz + \
  598. decode_putrootfh_maxsz + \
  599. decode_getattr_maxsz + \
  600. decode_getfh_maxsz)
  601. #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
  602. encode_sequence_maxsz + \
  603. encode_putfh_maxsz + \
  604. encode_remove_maxsz)
  605. #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
  606. decode_sequence_maxsz + \
  607. decode_putfh_maxsz + \
  608. decode_remove_maxsz)
  609. #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
  610. encode_sequence_maxsz + \
  611. encode_putfh_maxsz + \
  612. encode_savefh_maxsz + \
  613. encode_putfh_maxsz + \
  614. encode_rename_maxsz)
  615. #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
  616. decode_sequence_maxsz + \
  617. decode_putfh_maxsz + \
  618. decode_savefh_maxsz + \
  619. decode_putfh_maxsz + \
  620. decode_rename_maxsz)
  621. #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
  622. encode_sequence_maxsz + \
  623. encode_putfh_maxsz + \
  624. encode_savefh_maxsz + \
  625. encode_putfh_maxsz + \
  626. encode_link_maxsz + \
  627. encode_restorefh_maxsz + \
  628. encode_getattr_maxsz)
  629. #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
  630. decode_sequence_maxsz + \
  631. decode_putfh_maxsz + \
  632. decode_savefh_maxsz + \
  633. decode_putfh_maxsz + \
  634. decode_link_maxsz + \
  635. decode_restorefh_maxsz + \
  636. decode_getattr_maxsz)
  637. #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
  638. encode_sequence_maxsz + \
  639. encode_putfh_maxsz + \
  640. encode_symlink_maxsz + \
  641. encode_getattr_maxsz + \
  642. encode_getfh_maxsz)
  643. #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
  644. decode_sequence_maxsz + \
  645. decode_putfh_maxsz + \
  646. decode_symlink_maxsz + \
  647. decode_getattr_maxsz + \
  648. decode_getfh_maxsz)
  649. #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
  650. encode_sequence_maxsz + \
  651. encode_putfh_maxsz + \
  652. encode_create_maxsz + \
  653. encode_getfh_maxsz + \
  654. encode_getattr_maxsz)
  655. #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
  656. decode_sequence_maxsz + \
  657. decode_putfh_maxsz + \
  658. decode_create_maxsz + \
  659. decode_getfh_maxsz + \
  660. decode_getattr_maxsz)
  661. #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
  662. encode_sequence_maxsz + \
  663. encode_putfh_maxsz + \
  664. encode_getattr_maxsz)
  665. #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
  666. decode_sequence_maxsz + \
  667. decode_putfh_maxsz + \
  668. decode_getattr_maxsz)
  669. #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
  670. encode_sequence_maxsz + \
  671. encode_putfh_maxsz + \
  672. encode_statfs_maxsz)
  673. #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
  674. decode_sequence_maxsz + \
  675. decode_putfh_maxsz + \
  676. decode_statfs_maxsz)
  677. #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
  678. encode_sequence_maxsz + \
  679. encode_putfh_maxsz + \
  680. encode_getattr_maxsz)
  681. #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
  682. decode_sequence_maxsz + \
  683. decode_putfh_maxsz + \
  684. decode_getattr_maxsz)
  685. #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
  686. encode_sequence_maxsz + \
  687. encode_putfh_maxsz + \
  688. encode_delegreturn_maxsz + \
  689. encode_getattr_maxsz)
  690. #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
  691. decode_sequence_maxsz + \
  692. decode_delegreturn_maxsz + \
  693. decode_getattr_maxsz)
  694. #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
  695. encode_sequence_maxsz + \
  696. encode_putfh_maxsz + \
  697. encode_getacl_maxsz)
  698. #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
  699. decode_sequence_maxsz + \
  700. decode_putfh_maxsz + \
  701. decode_getacl_maxsz)
  702. #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
  703. encode_sequence_maxsz + \
  704. encode_putfh_maxsz + \
  705. encode_setacl_maxsz)
  706. #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
  707. decode_sequence_maxsz + \
  708. decode_putfh_maxsz + \
  709. decode_setacl_maxsz)
  710. #define NFS4_enc_fs_locations_sz \
  711. (compound_encode_hdr_maxsz + \
  712. encode_sequence_maxsz + \
  713. encode_putfh_maxsz + \
  714. encode_lookup_maxsz + \
  715. encode_fs_locations_maxsz)
  716. #define NFS4_dec_fs_locations_sz \
  717. (compound_decode_hdr_maxsz + \
  718. decode_sequence_maxsz + \
  719. decode_putfh_maxsz + \
  720. decode_lookup_maxsz + \
  721. decode_fs_locations_maxsz)
  722. #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
  723. encode_sequence_maxsz + \
  724. encode_putfh_maxsz + \
  725. encode_secinfo_maxsz)
  726. #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
  727. decode_sequence_maxsz + \
  728. decode_putfh_maxsz + \
  729. decode_secinfo_maxsz)
  730. #if defined(CONFIG_NFS_V4_1)
  731. #define NFS4_enc_bind_conn_to_session_sz \
  732. (compound_encode_hdr_maxsz + \
  733. encode_bind_conn_to_session_maxsz)
  734. #define NFS4_dec_bind_conn_to_session_sz \
  735. (compound_decode_hdr_maxsz + \
  736. decode_bind_conn_to_session_maxsz)
  737. #define NFS4_enc_exchange_id_sz \
  738. (compound_encode_hdr_maxsz + \
  739. encode_exchange_id_maxsz)
  740. #define NFS4_dec_exchange_id_sz \
  741. (compound_decode_hdr_maxsz + \
  742. decode_exchange_id_maxsz)
  743. #define NFS4_enc_create_session_sz \
  744. (compound_encode_hdr_maxsz + \
  745. encode_create_session_maxsz)
  746. #define NFS4_dec_create_session_sz \
  747. (compound_decode_hdr_maxsz + \
  748. decode_create_session_maxsz)
  749. #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
  750. encode_destroy_session_maxsz)
  751. #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
  752. decode_destroy_session_maxsz)
  753. #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
  754. encode_destroy_clientid_maxsz)
  755. #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
  756. decode_destroy_clientid_maxsz)
  757. #define NFS4_enc_sequence_sz \
  758. (compound_decode_hdr_maxsz + \
  759. encode_sequence_maxsz)
  760. #define NFS4_dec_sequence_sz \
  761. (compound_decode_hdr_maxsz + \
  762. decode_sequence_maxsz)
  763. #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
  764. encode_sequence_maxsz + \
  765. encode_putrootfh_maxsz + \
  766. encode_fsinfo_maxsz)
  767. #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
  768. decode_sequence_maxsz + \
  769. decode_putrootfh_maxsz + \
  770. decode_fsinfo_maxsz)
  771. #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
  772. encode_sequence_maxsz + \
  773. encode_reclaim_complete_maxsz)
  774. #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
  775. decode_sequence_maxsz + \
  776. decode_reclaim_complete_maxsz)
  777. #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
  778. encode_sequence_maxsz + \
  779. encode_putfh_maxsz + \
  780. encode_getdevicelist_maxsz)
  781. #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
  782. decode_sequence_maxsz + \
  783. decode_putfh_maxsz + \
  784. decode_getdevicelist_maxsz)
  785. #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
  786. encode_sequence_maxsz +\
  787. encode_getdeviceinfo_maxsz)
  788. #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
  789. decode_sequence_maxsz + \
  790. decode_getdeviceinfo_maxsz)
  791. #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
  792. encode_sequence_maxsz + \
  793. encode_putfh_maxsz + \
  794. encode_layoutget_maxsz)
  795. #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
  796. decode_sequence_maxsz + \
  797. decode_putfh_maxsz + \
  798. decode_layoutget_maxsz)
  799. #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
  800. encode_sequence_maxsz +\
  801. encode_putfh_maxsz + \
  802. encode_layoutcommit_maxsz + \
  803. encode_getattr_maxsz)
  804. #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
  805. decode_sequence_maxsz + \
  806. decode_putfh_maxsz + \
  807. decode_layoutcommit_maxsz + \
  808. decode_getattr_maxsz)
  809. #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
  810. encode_sequence_maxsz + \
  811. encode_putfh_maxsz + \
  812. encode_layoutreturn_maxsz)
  813. #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
  814. decode_sequence_maxsz + \
  815. decode_putfh_maxsz + \
  816. decode_layoutreturn_maxsz)
  817. #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
  818. encode_sequence_maxsz + \
  819. encode_putrootfh_maxsz +\
  820. encode_secinfo_no_name_maxsz)
  821. #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
  822. decode_sequence_maxsz + \
  823. decode_putrootfh_maxsz + \
  824. decode_secinfo_no_name_maxsz)
  825. #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
  826. encode_sequence_maxsz + \
  827. encode_test_stateid_maxsz)
  828. #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
  829. decode_sequence_maxsz + \
  830. decode_test_stateid_maxsz)
  831. #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
  832. encode_sequence_maxsz + \
  833. encode_free_stateid_maxsz)
  834. #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
  835. decode_sequence_maxsz + \
  836. decode_free_stateid_maxsz)
  837. const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
  838. compound_encode_hdr_maxsz +
  839. encode_sequence_maxsz +
  840. encode_putfh_maxsz +
  841. encode_getattr_maxsz) *
  842. XDR_UNIT);
  843. const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
  844. compound_decode_hdr_maxsz +
  845. decode_sequence_maxsz +
  846. decode_putfh_maxsz) *
  847. XDR_UNIT);
  848. #endif /* CONFIG_NFS_V4_1 */
  849. static const umode_t nfs_type2fmt[] = {
  850. [NF4BAD] = 0,
  851. [NF4REG] = S_IFREG,
  852. [NF4DIR] = S_IFDIR,
  853. [NF4BLK] = S_IFBLK,
  854. [NF4CHR] = S_IFCHR,
  855. [NF4LNK] = S_IFLNK,
  856. [NF4SOCK] = S_IFSOCK,
  857. [NF4FIFO] = S_IFIFO,
  858. [NF4ATTRDIR] = 0,
  859. [NF4NAMEDATTR] = 0,
  860. };
  861. struct compound_hdr {
  862. int32_t status;
  863. uint32_t nops;
  864. __be32 * nops_p;
  865. uint32_t taglen;
  866. char * tag;
  867. uint32_t replen; /* expected reply words */
  868. u32 minorversion;
  869. };
  870. static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
  871. {
  872. __be32 *p = xdr_reserve_space(xdr, nbytes);
  873. BUG_ON(!p);
  874. return p;
  875. }
  876. static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
  877. {
  878. __be32 *p;
  879. p = xdr_reserve_space(xdr, len);
  880. xdr_encode_opaque_fixed(p, buf, len);
  881. }
  882. static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
  883. {
  884. __be32 *p;
  885. p = reserve_space(xdr, 4 + len);
  886. xdr_encode_opaque(p, str, len);
  887. }
  888. static void encode_uint32(struct xdr_stream *xdr, u32 n)
  889. {
  890. __be32 *p;
  891. p = reserve_space(xdr, 4);
  892. *p = cpu_to_be32(n);
  893. }
  894. static void encode_uint64(struct xdr_stream *xdr, u64 n)
  895. {
  896. __be32 *p;
  897. p = reserve_space(xdr, 8);
  898. xdr_encode_hyper(p, n);
  899. }
  900. static void encode_nfs4_seqid(struct xdr_stream *xdr,
  901. const struct nfs_seqid *seqid)
  902. {
  903. encode_uint32(xdr, seqid->sequence->counter);
  904. }
  905. static void encode_compound_hdr(struct xdr_stream *xdr,
  906. struct rpc_rqst *req,
  907. struct compound_hdr *hdr)
  908. {
  909. __be32 *p;
  910. struct rpc_auth *auth = req->rq_cred->cr_auth;
  911. /* initialize running count of expected bytes in reply.
  912. * NOTE: the replied tag SHOULD be the same is the one sent,
  913. * but this is not required as a MUST for the server to do so. */
  914. hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
  915. WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
  916. encode_string(xdr, hdr->taglen, hdr->tag);
  917. p = reserve_space(xdr, 8);
  918. *p++ = cpu_to_be32(hdr->minorversion);
  919. hdr->nops_p = p;
  920. *p = cpu_to_be32(hdr->nops);
  921. }
  922. static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
  923. uint32_t replen,
  924. struct compound_hdr *hdr)
  925. {
  926. encode_uint32(xdr, op);
  927. hdr->nops++;
  928. hdr->replen += replen;
  929. }
  930. static void encode_nops(struct compound_hdr *hdr)
  931. {
  932. WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
  933. *hdr->nops_p = htonl(hdr->nops);
  934. }
  935. static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
  936. {
  937. encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
  938. }
  939. static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
  940. {
  941. encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
  942. }
  943. static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
  944. {
  945. char owner_name[IDMAP_NAMESZ];
  946. char owner_group[IDMAP_NAMESZ];
  947. int owner_namelen = 0;
  948. int owner_grouplen = 0;
  949. __be32 *p;
  950. __be32 *q;
  951. int len;
  952. uint32_t bmval0 = 0;
  953. uint32_t bmval1 = 0;
  954. /*
  955. * We reserve enough space to write the entire attribute buffer at once.
  956. * In the worst-case, this would be
  957. * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
  958. * = 36 bytes, plus any contribution from variable-length fields
  959. * such as owner/group.
  960. */
  961. len = 16;
  962. /* Sigh */
  963. if (iap->ia_valid & ATTR_SIZE)
  964. len += 8;
  965. if (iap->ia_valid & ATTR_MODE)
  966. len += 4;
  967. if (iap->ia_valid & ATTR_UID) {
  968. owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
  969. if (owner_namelen < 0) {
  970. dprintk("nfs: couldn't resolve uid %d to string\n",
  971. from_kuid(&init_user_ns, iap->ia_uid));
  972. /* XXX */
  973. strcpy(owner_name, "nobody");
  974. owner_namelen = sizeof("nobody") - 1;
  975. /* goto out; */
  976. }
  977. len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
  978. }
  979. if (iap->ia_valid & ATTR_GID) {
  980. owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
  981. if (owner_grouplen < 0) {
  982. dprintk("nfs: couldn't resolve gid %d to string\n",
  983. from_kgid(&init_user_ns, iap->ia_gid));
  984. strcpy(owner_group, "nobody");
  985. owner_grouplen = sizeof("nobody") - 1;
  986. /* goto out; */
  987. }
  988. len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
  989. }
  990. if (iap->ia_valid & ATTR_ATIME_SET)
  991. len += 16;
  992. else if (iap->ia_valid & ATTR_ATIME)
  993. len += 4;
  994. if (iap->ia_valid & ATTR_MTIME_SET)
  995. len += 16;
  996. else if (iap->ia_valid & ATTR_MTIME)
  997. len += 4;
  998. p = reserve_space(xdr, len);
  999. /*
  1000. * We write the bitmap length now, but leave the bitmap and the attribute
  1001. * buffer length to be backfilled at the end of this routine.
  1002. */
  1003. *p++ = cpu_to_be32(2);
  1004. q = p;
  1005. p += 3;
  1006. if (iap->ia_valid & ATTR_SIZE) {
  1007. bmval0 |= FATTR4_WORD0_SIZE;
  1008. p = xdr_encode_hyper(p, iap->ia_size);
  1009. }
  1010. if (iap->ia_valid & ATTR_MODE) {
  1011. bmval1 |= FATTR4_WORD1_MODE;
  1012. *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
  1013. }
  1014. if (iap->ia_valid & ATTR_UID) {
  1015. bmval1 |= FATTR4_WORD1_OWNER;
  1016. p = xdr_encode_opaque(p, owner_name, owner_namelen);
  1017. }
  1018. if (iap->ia_valid & ATTR_GID) {
  1019. bmval1 |= FATTR4_WORD1_OWNER_GROUP;
  1020. p = xdr_encode_opaque(p, owner_group, owner_grouplen);
  1021. }
  1022. if (iap->ia_valid & ATTR_ATIME_SET) {
  1023. bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
  1024. *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
  1025. *p++ = cpu_to_be32(0);
  1026. *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
  1027. *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
  1028. }
  1029. else if (iap->ia_valid & ATTR_ATIME) {
  1030. bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
  1031. *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
  1032. }
  1033. if (iap->ia_valid & ATTR_MTIME_SET) {
  1034. bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
  1035. *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
  1036. *p++ = cpu_to_be32(0);
  1037. *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
  1038. *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
  1039. }
  1040. else if (iap->ia_valid & ATTR_MTIME) {
  1041. bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
  1042. *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
  1043. }
  1044. /*
  1045. * Now we backfill the bitmap and the attribute buffer length.
  1046. */
  1047. if (len != ((char *)p - (char *)q) + 4) {
  1048. printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n",
  1049. len, ((char *)p - (char *)q) + 4);
  1050. BUG();
  1051. }
  1052. len = (char *)p - (char *)q - 12;
  1053. *q++ = htonl(bmval0);
  1054. *q++ = htonl(bmval1);
  1055. *q = htonl(len);
  1056. /* out: */
  1057. }
  1058. static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
  1059. {
  1060. encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
  1061. encode_uint32(xdr, access);
  1062. }
  1063. static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
  1064. {
  1065. encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
  1066. encode_nfs4_seqid(xdr, arg->seqid);
  1067. encode_nfs4_stateid(xdr, arg->stateid);
  1068. }
  1069. static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
  1070. {
  1071. __be32 *p;
  1072. encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
  1073. p = reserve_space(xdr, 12);
  1074. p = xdr_encode_hyper(p, args->offset);
  1075. *p = cpu_to_be32(args->count);
  1076. }
  1077. static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
  1078. {
  1079. __be32 *p;
  1080. encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
  1081. encode_uint32(xdr, create->ftype);
  1082. switch (create->ftype) {
  1083. case NF4LNK:
  1084. p = reserve_space(xdr, 4);
  1085. *p = cpu_to_be32(create->u.symlink.len);
  1086. xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
  1087. break;
  1088. case NF4BLK: case NF4CHR:
  1089. p = reserve_space(xdr, 8);
  1090. *p++ = cpu_to_be32(create->u.device.specdata1);
  1091. *p = cpu_to_be32(create->u.device.specdata2);
  1092. break;
  1093. default:
  1094. break;
  1095. }
  1096. encode_string(xdr, create->name->len, create->name->name);
  1097. encode_attrs(xdr, create->attrs, create->server);
  1098. }
  1099. static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
  1100. {
  1101. __be32 *p;
  1102. encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
  1103. p = reserve_space(xdr, 8);
  1104. *p++ = cpu_to_be32(1);
  1105. *p = cpu_to_be32(bitmap);
  1106. }
  1107. static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
  1108. {
  1109. __be32 *p;
  1110. encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
  1111. p = reserve_space(xdr, 12);
  1112. *p++ = cpu_to_be32(2);
  1113. *p++ = cpu_to_be32(bm0);
  1114. *p = cpu_to_be32(bm1);
  1115. }
  1116. static void
  1117. encode_getattr_three(struct xdr_stream *xdr,
  1118. uint32_t bm0, uint32_t bm1, uint32_t bm2,
  1119. struct compound_hdr *hdr)
  1120. {
  1121. __be32 *p;
  1122. encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
  1123. if (bm2) {
  1124. p = reserve_space(xdr, 16);
  1125. *p++ = cpu_to_be32(3);
  1126. *p++ = cpu_to_be32(bm0);
  1127. *p++ = cpu_to_be32(bm1);
  1128. *p = cpu_to_be32(bm2);
  1129. } else if (bm1) {
  1130. p = reserve_space(xdr, 12);
  1131. *p++ = cpu_to_be32(2);
  1132. *p++ = cpu_to_be32(bm0);
  1133. *p = cpu_to_be32(bm1);
  1134. } else {
  1135. p = reserve_space(xdr, 8);
  1136. *p++ = cpu_to_be32(1);
  1137. *p = cpu_to_be32(bm0);
  1138. }
  1139. }
  1140. static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
  1141. {
  1142. encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
  1143. bitmask[1] & nfs4_fattr_bitmap[1], hdr);
  1144. }
  1145. static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
  1146. const u32 *open_bitmap,
  1147. struct compound_hdr *hdr)
  1148. {
  1149. encode_getattr_three(xdr,
  1150. bitmask[0] & open_bitmap[0],
  1151. bitmask[1] & open_bitmap[1],
  1152. bitmask[2] & open_bitmap[2],
  1153. hdr);
  1154. }
  1155. static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
  1156. {
  1157. encode_getattr_three(xdr,
  1158. bitmask[0] & nfs4_fsinfo_bitmap[0],
  1159. bitmask[1] & nfs4_fsinfo_bitmap[1],
  1160. bitmask[2] & nfs4_fsinfo_bitmap[2],
  1161. hdr);
  1162. }
  1163. static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
  1164. {
  1165. encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
  1166. bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
  1167. }
  1168. static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
  1169. {
  1170. encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
  1171. }
  1172. static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
  1173. {
  1174. encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
  1175. encode_string(xdr, name->len, name->name);
  1176. }
  1177. static inline int nfs4_lock_type(struct file_lock *fl, int block)
  1178. {
  1179. if (fl->fl_type == F_RDLCK)
  1180. return block ? NFS4_READW_LT : NFS4_READ_LT;
  1181. return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
  1182. }
  1183. static inline uint64_t nfs4_lock_length(struct file_lock *fl)
  1184. {
  1185. if (fl->fl_end == OFFSET_MAX)
  1186. return ~(uint64_t)0;
  1187. return fl->fl_end - fl->fl_start + 1;
  1188. }
  1189. static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
  1190. {
  1191. __be32 *p;
  1192. p = reserve_space(xdr, 32);
  1193. p = xdr_encode_hyper(p, lowner->clientid);
  1194. *p++ = cpu_to_be32(20);
  1195. p = xdr_encode_opaque_fixed(p, "lock id:", 8);
  1196. *p++ = cpu_to_be32(lowner->s_dev);
  1197. xdr_encode_hyper(p, lowner->id);
  1198. }
  1199. /*
  1200. * opcode,type,reclaim,offset,length,new_lock_owner = 32
  1201. * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
  1202. */
  1203. static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
  1204. {
  1205. __be32 *p;
  1206. encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
  1207. p = reserve_space(xdr, 28);
  1208. *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
  1209. *p++ = cpu_to_be32(args->reclaim);
  1210. p = xdr_encode_hyper(p, args->fl->fl_start);
  1211. p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
  1212. *p = cpu_to_be32(args->new_lock_owner);
  1213. if (args->new_lock_owner){
  1214. encode_nfs4_seqid(xdr, args->open_seqid);
  1215. encode_nfs4_stateid(xdr, args->open_stateid);
  1216. encode_nfs4_seqid(xdr, args->lock_seqid);
  1217. encode_lockowner(xdr, &args->lock_owner);
  1218. }
  1219. else {
  1220. encode_nfs4_stateid(xdr, args->lock_stateid);
  1221. encode_nfs4_seqid(xdr, args->lock_seqid);
  1222. }
  1223. }
  1224. static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
  1225. {
  1226. __be32 *p;
  1227. encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
  1228. p = reserve_space(xdr, 20);
  1229. *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
  1230. p = xdr_encode_hyper(p, args->fl->fl_start);
  1231. p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
  1232. encode_lockowner(xdr, &args->lock_owner);
  1233. }
  1234. static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
  1235. {
  1236. __be32 *p;
  1237. encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
  1238. encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
  1239. encode_nfs4_seqid(xdr, args->seqid);
  1240. encode_nfs4_stateid(xdr, args->stateid);
  1241. p = reserve_space(xdr, 16);
  1242. p = xdr_encode_hyper(p, args->fl->fl_start);
  1243. xdr_encode_hyper(p, nfs4_lock_length(args->fl));
  1244. }
  1245. static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
  1246. {
  1247. encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
  1248. encode_lockowner(xdr, lowner);
  1249. }
  1250. static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
  1251. {
  1252. encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
  1253. encode_string(xdr, name->len, name->name);
  1254. }
  1255. static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
  1256. {
  1257. __be32 *p;
  1258. p = reserve_space(xdr, 8);
  1259. switch (fmode & (FMODE_READ|FMODE_WRITE)) {
  1260. case FMODE_READ:
  1261. *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
  1262. break;
  1263. case FMODE_WRITE:
  1264. *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
  1265. break;
  1266. case FMODE_READ|FMODE_WRITE:
  1267. *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
  1268. break;
  1269. default:
  1270. *p++ = cpu_to_be32(0);
  1271. }
  1272. *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
  1273. }
  1274. static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
  1275. {
  1276. __be32 *p;
  1277. /*
  1278. * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
  1279. * owner 4 = 32
  1280. */
  1281. encode_nfs4_seqid(xdr, arg->seqid);
  1282. encode_share_access(xdr, arg->fmode);
  1283. p = reserve_space(xdr, 36);
  1284. p = xdr_encode_hyper(p, arg->clientid);
  1285. *p++ = cpu_to_be32(24);
  1286. p = xdr_encode_opaque_fixed(p, "open id:", 8);
  1287. *p++ = cpu_to_be32(arg->server->s_dev);
  1288. *p++ = cpu_to_be32(arg->id.uniquifier);
  1289. xdr_encode_hyper(p, arg->id.create_time);
  1290. }
  1291. static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
  1292. {
  1293. __be32 *p;
  1294. struct nfs_client *clp;
  1295. p = reserve_space(xdr, 4);
  1296. switch(arg->open_flags & O_EXCL) {
  1297. case 0:
  1298. *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
  1299. encode_attrs(xdr, arg->u.attrs, arg->server);
  1300. break;
  1301. default:
  1302. clp = arg->server->nfs_client;
  1303. if (clp->cl_mvops->minor_version > 0) {
  1304. if (nfs4_has_persistent_session(clp)) {
  1305. *p = cpu_to_be32(NFS4_CREATE_GUARDED);
  1306. encode_attrs(xdr, arg->u.attrs, arg->server);
  1307. } else {
  1308. struct iattr dummy;
  1309. *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
  1310. encode_nfs4_verifier(xdr, &arg->u.verifier);
  1311. dummy.ia_valid = 0;
  1312. encode_attrs(xdr, &dummy, arg->server);
  1313. }
  1314. } else {
  1315. *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
  1316. encode_nfs4_verifier(xdr, &arg->u.verifier);
  1317. }
  1318. }
  1319. }
  1320. static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
  1321. {
  1322. __be32 *p;
  1323. p = reserve_space(xdr, 4);
  1324. switch (arg->open_flags & O_CREAT) {
  1325. case 0:
  1326. *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
  1327. break;
  1328. default:
  1329. *p = cpu_to_be32(NFS4_OPEN_CREATE);
  1330. encode_createmode(xdr, arg);
  1331. }
  1332. }
  1333. static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
  1334. {
  1335. __be32 *p;
  1336. p = reserve_space(xdr, 4);
  1337. switch (delegation_type) {
  1338. case 0:
  1339. *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
  1340. break;
  1341. case FMODE_READ:
  1342. *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
  1343. break;
  1344. case FMODE_WRITE|FMODE_READ:
  1345. *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
  1346. break;
  1347. default:
  1348. BUG();
  1349. }
  1350. }
  1351. static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
  1352. {
  1353. __be32 *p;
  1354. p = reserve_space(xdr, 4);
  1355. *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
  1356. encode_string(xdr, name->len, name->name);
  1357. }
  1358. static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
  1359. {
  1360. __be32 *p;
  1361. p = reserve_space(xdr, 4);
  1362. *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
  1363. encode_delegation_type(xdr, type);
  1364. }
  1365. static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
  1366. {
  1367. __be32 *p;
  1368. p = reserve_space(xdr, 4);
  1369. *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
  1370. encode_nfs4_stateid(xdr, stateid);
  1371. encode_string(xdr, name->len, name->name);
  1372. }
  1373. static inline void encode_claim_fh(struct xdr_stream *xdr)
  1374. {
  1375. __be32 *p;
  1376. p = reserve_space(xdr, 4);
  1377. *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
  1378. }
  1379. static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
  1380. {
  1381. __be32 *p;
  1382. p = reserve_space(xdr, 4);
  1383. *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
  1384. encode_nfs4_stateid(xdr, stateid);
  1385. }
  1386. static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
  1387. {
  1388. encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
  1389. encode_openhdr(xdr, arg);
  1390. encode_opentype(xdr, arg);
  1391. switch (arg->claim) {
  1392. case NFS4_OPEN_CLAIM_NULL:
  1393. encode_claim_null(xdr, arg->name);
  1394. break;
  1395. case NFS4_OPEN_CLAIM_PREVIOUS:
  1396. encode_claim_previous(xdr, arg->u.delegation_type);
  1397. break;
  1398. case NFS4_OPEN_CLAIM_DELEGATE_CUR:
  1399. encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
  1400. break;
  1401. case NFS4_OPEN_CLAIM_FH:
  1402. encode_claim_fh(xdr);
  1403. break;
  1404. case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
  1405. encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
  1406. break;
  1407. default:
  1408. BUG();
  1409. }
  1410. }
  1411. static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
  1412. {
  1413. encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
  1414. encode_nfs4_stateid(xdr, arg->stateid);
  1415. encode_nfs4_seqid(xdr, arg->seqid);
  1416. }
  1417. static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
  1418. {
  1419. encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
  1420. encode_nfs4_stateid(xdr, arg->stateid);
  1421. encode_nfs4_seqid(xdr, arg->seqid);
  1422. encode_share_access(xdr, arg->fmode);
  1423. }
  1424. static void
  1425. encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
  1426. {
  1427. encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
  1428. encode_string(xdr, fh->size, fh->data);
  1429. }
  1430. static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
  1431. {
  1432. encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
  1433. }
  1434. static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
  1435. {
  1436. __be32 *p;
  1437. encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
  1438. encode_nfs4_stateid(xdr, &args->stateid);
  1439. p = reserve_space(xdr, 12);
  1440. p = xdr_encode_hyper(p, args->offset);
  1441. *p = cpu_to_be32(args->count);
  1442. }
  1443. static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
  1444. {
  1445. uint32_t attrs[2] = {
  1446. FATTR4_WORD0_RDATTR_ERROR,
  1447. FATTR4_WORD1_MOUNTED_ON_FILEID,
  1448. };
  1449. uint32_t dircount = readdir->count >> 1;
  1450. __be32 *p, verf[2];
  1451. if (readdir->plus) {
  1452. attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
  1453. FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
  1454. attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
  1455. FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
  1456. FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
  1457. FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
  1458. dircount >>= 1;
  1459. }
  1460. /* Use mounted_on_fileid only if the server supports it */
  1461. if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
  1462. attrs[0] |= FATTR4_WORD0_FILEID;
  1463. encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
  1464. encode_uint64(xdr, readdir->cookie);
  1465. encode_nfs4_verifier(xdr, &readdir->verifier);
  1466. p = reserve_space(xdr, 20);
  1467. *p++ = cpu_to_be32(dircount);
  1468. *p++ = cpu_to_be32(readdir->count);
  1469. *p++ = cpu_to_be32(2);
  1470. *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
  1471. *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
  1472. memcpy(verf, readdir->verifier.data, sizeof(verf));
  1473. dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
  1474. __func__,
  1475. (unsigned long long)readdir->cookie,
  1476. verf[0], verf[1],
  1477. attrs[0] & readdir->bitmask[0],
  1478. attrs[1] & readdir->bitmask[1]);
  1479. }
  1480. static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
  1481. {
  1482. encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
  1483. }
  1484. static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
  1485. {
  1486. encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
  1487. encode_string(xdr, name->len, name->name);
  1488. }
  1489. static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
  1490. {
  1491. encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
  1492. encode_string(xdr, oldname->len, oldname->name);
  1493. encode_string(xdr, newname->len, newname->name);
  1494. }
  1495. static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
  1496. struct compound_hdr *hdr)
  1497. {
  1498. encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
  1499. encode_uint64(xdr, clid);
  1500. }
  1501. static void
  1502. encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
  1503. {
  1504. encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
  1505. }
  1506. static void
  1507. encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
  1508. {
  1509. __be32 *p;
  1510. encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
  1511. encode_nfs4_stateid(xdr, &zero_stateid);
  1512. p = reserve_space(xdr, 2*4);
  1513. *p++ = cpu_to_be32(1);
  1514. *p = cpu_to_be32(FATTR4_WORD0_ACL);
  1515. p = reserve_space(xdr, 4);
  1516. *p = cpu_to_be32(arg->acl_len);
  1517. xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
  1518. }
  1519. static void
  1520. encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
  1521. {
  1522. encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
  1523. }
  1524. static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
  1525. {
  1526. encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
  1527. encode_nfs4_stateid(xdr, &arg->stateid);
  1528. encode_attrs(xdr, arg->iap, server);
  1529. }
  1530. static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
  1531. {
  1532. __be32 *p;
  1533. encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
  1534. encode_nfs4_verifier(xdr, setclientid->sc_verifier);
  1535. encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
  1536. p = reserve_space(xdr, 4);
  1537. *p = cpu_to_be32(setclientid->sc_prog);
  1538. encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
  1539. encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
  1540. p = reserve_space(xdr, 4);
  1541. *p = cpu_to_be32(setclientid->sc_cb_ident);
  1542. }
  1543. static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
  1544. {
  1545. encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
  1546. decode_setclientid_confirm_maxsz, hdr);
  1547. encode_uint64(xdr, arg->clientid);
  1548. encode_nfs4_verifier(xdr, &arg->confirm);
  1549. }
  1550. static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
  1551. {
  1552. __be32 *p;
  1553. encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
  1554. encode_nfs4_stateid(xdr, &args->stateid);
  1555. p = reserve_space(xdr, 16);
  1556. p = xdr_encode_hyper(p, args->offset);
  1557. *p++ = cpu_to_be32(args->stable);
  1558. *p = cpu_to_be32(args->count);
  1559. xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
  1560. }
  1561. static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
  1562. {
  1563. encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
  1564. encode_nfs4_stateid(xdr, stateid);
  1565. }
  1566. static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
  1567. {
  1568. encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
  1569. encode_string(xdr, name->len, name->name);
  1570. }
  1571. #if defined(CONFIG_NFS_V4_1)
  1572. /* NFSv4.1 operations */
  1573. static void encode_bind_conn_to_session(struct xdr_stream *xdr,
  1574. struct nfs4_session *session,
  1575. struct compound_hdr *hdr)
  1576. {
  1577. __be32 *p;
  1578. encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
  1579. decode_bind_conn_to_session_maxsz, hdr);
  1580. encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
  1581. p = xdr_reserve_space(xdr, 8);
  1582. *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
  1583. *p = 0; /* use_conn_in_rdma_mode = False */
  1584. }
  1585. static void encode_exchange_id(struct xdr_stream *xdr,
  1586. struct nfs41_exchange_id_args *args,
  1587. struct compound_hdr *hdr)
  1588. {
  1589. __be32 *p;
  1590. char impl_name[IMPL_NAME_LIMIT];
  1591. int len = 0;
  1592. encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
  1593. encode_nfs4_verifier(xdr, args->verifier);
  1594. encode_string(xdr, args->id_len, args->id);
  1595. p = reserve_space(xdr, 12);
  1596. *p++ = cpu_to_be32(args->flags);
  1597. *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
  1598. if (send_implementation_id &&
  1599. sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
  1600. sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
  1601. <= sizeof(impl_name) + 1)
  1602. len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
  1603. utsname()->sysname, utsname()->release,
  1604. utsname()->version, utsname()->machine);
  1605. if (len > 0) {
  1606. *p = cpu_to_be32(1); /* implementation id array length=1 */
  1607. encode_string(xdr,
  1608. sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
  1609. CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
  1610. encode_string(xdr, len, impl_name);
  1611. /* just send zeros for nii_date - the date is in nii_name */
  1612. p = reserve_space(xdr, 12);
  1613. p = xdr_encode_hyper(p, 0);
  1614. *p = cpu_to_be32(0);
  1615. } else
  1616. *p = cpu_to_be32(0); /* implementation id array length=0 */
  1617. }
  1618. static void encode_create_session(struct xdr_stream *xdr,
  1619. struct nfs41_create_session_args *args,
  1620. struct compound_hdr *hdr)
  1621. {
  1622. __be32 *p;
  1623. char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
  1624. uint32_t len;
  1625. struct nfs_client *clp = args->client;
  1626. struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
  1627. u32 max_resp_sz_cached;
  1628. /*
  1629. * Assumes OPEN is the biggest non-idempotent compound.
  1630. * 2 is the verifier.
  1631. */
  1632. max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
  1633. RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
  1634. len = scnprintf(machine_name, sizeof(machine_name), "%s",
  1635. clp->cl_ipaddr);
  1636. encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
  1637. p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
  1638. p = xdr_encode_hyper(p, clp->cl_clientid);
  1639. *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
  1640. *p++ = cpu_to_be32(args->flags); /*flags */
  1641. /* Fore Channel */
  1642. *p++ = cpu_to_be32(0); /* header padding size */
  1643. *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
  1644. *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
  1645. *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
  1646. *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
  1647. *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
  1648. *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
  1649. /* Back Channel */
  1650. *p++ = cpu_to_be32(0); /* header padding size */
  1651. *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
  1652. *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
  1653. *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
  1654. *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
  1655. *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
  1656. *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
  1657. *p++ = cpu_to_be32(args->cb_program); /* cb_program */
  1658. *p++ = cpu_to_be32(1);
  1659. *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
  1660. /* authsys_parms rfc1831 */
  1661. *p++ = (__be32)nn->boot_time.tv_nsec; /* stamp */
  1662. p = xdr_encode_opaque(p, machine_name, len);
  1663. *p++ = cpu_to_be32(0); /* UID */
  1664. *p++ = cpu_to_be32(0); /* GID */
  1665. *p = cpu_to_be32(0); /* No more gids */
  1666. }
  1667. static void encode_destroy_session(struct xdr_stream *xdr,
  1668. struct nfs4_session *session,
  1669. struct compound_hdr *hdr)
  1670. {
  1671. encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
  1672. encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
  1673. }
  1674. static void encode_destroy_clientid(struct xdr_stream *xdr,
  1675. uint64_t clientid,
  1676. struct compound_hdr *hdr)
  1677. {
  1678. encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
  1679. encode_uint64(xdr, clientid);
  1680. }
  1681. static void encode_reclaim_complete(struct xdr_stream *xdr,
  1682. struct nfs41_reclaim_complete_args *args,
  1683. struct compound_hdr *hdr)
  1684. {
  1685. encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
  1686. encode_uint32(xdr, args->one_fs);
  1687. }
  1688. #endif /* CONFIG_NFS_V4_1 */
  1689. static void encode_sequence(struct xdr_stream *xdr,
  1690. const struct nfs4_sequence_args *args,
  1691. struct compound_hdr *hdr)
  1692. {
  1693. #if defined(CONFIG_NFS_V4_1)
  1694. struct nfs4_session *session;
  1695. struct nfs4_slot_table *tp;
  1696. struct nfs4_slot *slot = args->sa_slot;
  1697. __be32 *p;
  1698. if (slot == NULL)
  1699. return;
  1700. tp = slot->table;
  1701. session = tp->session;
  1702. encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
  1703. /*
  1704. * Sessionid + seqid + slotid + max slotid + cache_this
  1705. */
  1706. dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
  1707. "max_slotid=%d cache_this=%d\n",
  1708. __func__,
  1709. ((u32 *)session->sess_id.data)[0],
  1710. ((u32 *)session->sess_id.data)[1],
  1711. ((u32 *)session->sess_id.data)[2],
  1712. ((u32 *)session->sess_id.data)[3],
  1713. slot->seq_nr, slot->slot_nr,
  1714. tp->highest_used_slotid, args->sa_cache_this);
  1715. p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
  1716. p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
  1717. *p++ = cpu_to_be32(slot->seq_nr);
  1718. *p++ = cpu_to_be32(slot->slot_nr);
  1719. *p++ = cpu_to_be32(tp->highest_used_slotid);
  1720. *p = cpu_to_be32(args->sa_cache_this);
  1721. #endif /* CONFIG_NFS_V4_1 */
  1722. }
  1723. #ifdef CONFIG_NFS_V4_1
  1724. static void
  1725. encode_getdevicelist(struct xdr_stream *xdr,
  1726. const struct nfs4_getdevicelist_args *args,
  1727. struct compound_hdr *hdr)
  1728. {
  1729. __be32 *p;
  1730. nfs4_verifier dummy = {
  1731. .data = "dummmmmy",
  1732. };
  1733. encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr);
  1734. p = reserve_space(xdr, 16);
  1735. *p++ = cpu_to_be32(args->layoutclass);
  1736. *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
  1737. xdr_encode_hyper(p, 0ULL); /* cookie */
  1738. encode_nfs4_verifier(xdr, &dummy);
  1739. }
  1740. static void
  1741. encode_getdeviceinfo(struct xdr_stream *xdr,
  1742. const struct nfs4_getdeviceinfo_args *args,
  1743. struct compound_hdr *hdr)
  1744. {
  1745. __be32 *p;
  1746. encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
  1747. p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
  1748. p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
  1749. NFS4_DEVICEID4_SIZE);
  1750. *p++ = cpu_to_be32(args->pdev->layout_type);
  1751. *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
  1752. *p++ = cpu_to_be32(0); /* bitmap length 0 */
  1753. }
  1754. static void
  1755. encode_layoutget(struct xdr_stream *xdr,
  1756. const struct nfs4_layoutget_args *args,
  1757. struct compound_hdr *hdr)
  1758. {
  1759. __be32 *p;
  1760. encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
  1761. p = reserve_space(xdr, 36);
  1762. *p++ = cpu_to_be32(0); /* Signal layout available */
  1763. *p++ = cpu_to_be32(args->type);
  1764. *p++ = cpu_to_be32(args->range.iomode);
  1765. p = xdr_encode_hyper(p, args->range.offset);
  1766. p = xdr_encode_hyper(p, args->range.length);
  1767. p = xdr_encode_hyper(p, args->minlength);
  1768. encode_nfs4_stateid(xdr, &args->stateid);
  1769. encode_uint32(xdr, args->maxcount);
  1770. dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
  1771. __func__,
  1772. args->type,
  1773. args->range.iomode,
  1774. (unsigned long)args->range.offset,
  1775. (unsigned long)args->range.length,
  1776. args->maxcount);
  1777. }
  1778. static int
  1779. encode_layoutcommit(struct xdr_stream *xdr,
  1780. struct inode *inode,
  1781. const struct nfs4_layoutcommit_args *args,
  1782. struct compound_hdr *hdr)
  1783. {
  1784. __be32 *p;
  1785. dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
  1786. NFS_SERVER(args->inode)->pnfs_curr_ld->id);
  1787. encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
  1788. p = reserve_space(xdr, 20);
  1789. /* Only whole file layouts */
  1790. p = xdr_encode_hyper(p, 0); /* offset */
  1791. p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
  1792. *p = cpu_to_be32(0); /* reclaim */
  1793. encode_nfs4_stateid(xdr, &args->stateid);
  1794. p = reserve_space(xdr, 20);
  1795. *p++ = cpu_to_be32(1); /* newoffset = TRUE */
  1796. p = xdr_encode_hyper(p, args->lastbytewritten);
  1797. *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
  1798. *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
  1799. if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
  1800. NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
  1801. NFS_I(inode)->layout, xdr, args);
  1802. else
  1803. encode_uint32(xdr, 0); /* no layout-type payload */
  1804. return 0;
  1805. }
  1806. static void
  1807. encode_layoutreturn(struct xdr_stream *xdr,
  1808. const struct nfs4_layoutreturn_args *args,
  1809. struct compound_hdr *hdr)
  1810. {
  1811. __be32 *p;
  1812. encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
  1813. p = reserve_space(xdr, 16);
  1814. *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
  1815. *p++ = cpu_to_be32(args->layout_type);
  1816. *p++ = cpu_to_be32(IOMODE_ANY);
  1817. *p = cpu_to_be32(RETURN_FILE);
  1818. p = reserve_space(xdr, 16);
  1819. p = xdr_encode_hyper(p, 0);
  1820. p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
  1821. spin_lock(&args->inode->i_lock);
  1822. encode_nfs4_stateid(xdr, &args->stateid);
  1823. spin_unlock(&args->inode->i_lock);
  1824. if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
  1825. NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
  1826. NFS_I(args->inode)->layout, xdr, args);
  1827. } else
  1828. encode_uint32(xdr, 0);
  1829. }
  1830. static int
  1831. encode_secinfo_no_name(struct xdr_stream *xdr,
  1832. const struct nfs41_secinfo_no_name_args *args,
  1833. struct compound_hdr *hdr)
  1834. {
  1835. encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
  1836. encode_uint32(xdr, args->style);
  1837. return 0;
  1838. }
  1839. static void encode_test_stateid(struct xdr_stream *xdr,
  1840. struct nfs41_test_stateid_args *args,
  1841. struct compound_hdr *hdr)
  1842. {
  1843. encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
  1844. encode_uint32(xdr, 1);
  1845. encode_nfs4_stateid(xdr, args->stateid);
  1846. }
  1847. static void encode_free_stateid(struct xdr_stream *xdr,
  1848. struct nfs41_free_stateid_args *args,
  1849. struct compound_hdr *hdr)
  1850. {
  1851. encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
  1852. encode_nfs4_stateid(xdr, args->stateid);
  1853. }
  1854. #endif /* CONFIG_NFS_V4_1 */
  1855. /*
  1856. * END OF "GENERIC" ENCODE ROUTINES.
  1857. */
  1858. static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
  1859. {
  1860. #if defined(CONFIG_NFS_V4_1)
  1861. if (args->sa_slot)
  1862. return args->sa_slot->table->session->clp->cl_mvops->minor_version;
  1863. #endif /* CONFIG_NFS_V4_1 */
  1864. return 0;
  1865. }
  1866. /*
  1867. * Encode an ACCESS request
  1868. */
  1869. static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
  1870. const struct nfs4_accessargs *args)
  1871. {
  1872. struct compound_hdr hdr = {
  1873. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  1874. };
  1875. encode_compound_hdr(xdr, req, &hdr);
  1876. encode_sequence(xdr, &args->seq_args, &hdr);
  1877. encode_putfh(xdr, args->fh, &hdr);
  1878. encode_access(xdr, args->access, &hdr);
  1879. encode_getfattr(xdr, args->bitmask, &hdr);
  1880. encode_nops(&hdr);
  1881. }
  1882. /*
  1883. * Encode LOOKUP request
  1884. */
  1885. static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
  1886. const struct nfs4_lookup_arg *args)
  1887. {
  1888. struct compound_hdr hdr = {
  1889. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  1890. };
  1891. encode_compound_hdr(xdr, req, &hdr);
  1892. encode_sequence(xdr, &args->seq_args, &hdr);
  1893. encode_putfh(xdr, args->dir_fh, &hdr);
  1894. encode_lookup(xdr, args->name, &hdr);
  1895. encode_getfh(xdr, &hdr);
  1896. encode_getfattr(xdr, args->bitmask, &hdr);
  1897. encode_nops(&hdr);
  1898. }
  1899. /*
  1900. * Encode LOOKUP_ROOT request
  1901. */
  1902. static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
  1903. struct xdr_stream *xdr,
  1904. const struct nfs4_lookup_root_arg *args)
  1905. {
  1906. struct compound_hdr hdr = {
  1907. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  1908. };
  1909. encode_compound_hdr(xdr, req, &hdr);
  1910. encode_sequence(xdr, &args->seq_args, &hdr);
  1911. encode_putrootfh(xdr, &hdr);
  1912. encode_getfh(xdr, &hdr);
  1913. encode_getfattr(xdr, args->bitmask, &hdr);
  1914. encode_nops(&hdr);
  1915. }
  1916. /*
  1917. * Encode REMOVE request
  1918. */
  1919. static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
  1920. const struct nfs_removeargs *args)
  1921. {
  1922. struct compound_hdr hdr = {
  1923. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  1924. };
  1925. encode_compound_hdr(xdr, req, &hdr);
  1926. encode_sequence(xdr, &args->seq_args, &hdr);
  1927. encode_putfh(xdr, args->fh, &hdr);
  1928. encode_remove(xdr, &args->name, &hdr);
  1929. encode_nops(&hdr);
  1930. }
  1931. /*
  1932. * Encode RENAME request
  1933. */
  1934. static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
  1935. const struct nfs_renameargs *args)
  1936. {
  1937. struct compound_hdr hdr = {
  1938. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  1939. };
  1940. encode_compound_hdr(xdr, req, &hdr);
  1941. encode_sequence(xdr, &args->seq_args, &hdr);
  1942. encode_putfh(xdr, args->old_dir, &hdr);
  1943. encode_savefh(xdr, &hdr);
  1944. encode_putfh(xdr, args->new_dir, &hdr);
  1945. encode_rename(xdr, args->old_name, args->new_name, &hdr);
  1946. encode_nops(&hdr);
  1947. }
  1948. /*
  1949. * Encode LINK request
  1950. */
  1951. static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
  1952. const struct nfs4_link_arg *args)
  1953. {
  1954. struct compound_hdr hdr = {
  1955. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  1956. };
  1957. encode_compound_hdr(xdr, req, &hdr);
  1958. encode_sequence(xdr, &args->seq_args, &hdr);
  1959. encode_putfh(xdr, args->fh, &hdr);
  1960. encode_savefh(xdr, &hdr);
  1961. encode_putfh(xdr, args->dir_fh, &hdr);
  1962. encode_link(xdr, args->name, &hdr);
  1963. encode_restorefh(xdr, &hdr);
  1964. encode_getfattr(xdr, args->bitmask, &hdr);
  1965. encode_nops(&hdr);
  1966. }
  1967. /*
  1968. * Encode CREATE request
  1969. */
  1970. static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
  1971. const struct nfs4_create_arg *args)
  1972. {
  1973. struct compound_hdr hdr = {
  1974. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  1975. };
  1976. encode_compound_hdr(xdr, req, &hdr);
  1977. encode_sequence(xdr, &args->seq_args, &hdr);
  1978. encode_putfh(xdr, args->dir_fh, &hdr);
  1979. encode_create(xdr, args, &hdr);
  1980. encode_getfh(xdr, &hdr);
  1981. encode_getfattr(xdr, args->bitmask, &hdr);
  1982. encode_nops(&hdr);
  1983. }
  1984. /*
  1985. * Encode SYMLINK request
  1986. */
  1987. static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
  1988. const struct nfs4_create_arg *args)
  1989. {
  1990. nfs4_xdr_enc_create(req, xdr, args);
  1991. }
  1992. /*
  1993. * Encode GETATTR request
  1994. */
  1995. static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
  1996. const struct nfs4_getattr_arg *args)
  1997. {
  1998. struct compound_hdr hdr = {
  1999. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2000. };
  2001. encode_compound_hdr(xdr, req, &hdr);
  2002. encode_sequence(xdr, &args->seq_args, &hdr);
  2003. encode_putfh(xdr, args->fh, &hdr);
  2004. encode_getfattr(xdr, args->bitmask, &hdr);
  2005. encode_nops(&hdr);
  2006. }
  2007. /*
  2008. * Encode a CLOSE request
  2009. */
  2010. static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
  2011. struct nfs_closeargs *args)
  2012. {
  2013. struct compound_hdr hdr = {
  2014. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2015. };
  2016. encode_compound_hdr(xdr, req, &hdr);
  2017. encode_sequence(xdr, &args->seq_args, &hdr);
  2018. encode_putfh(xdr, args->fh, &hdr);
  2019. encode_close(xdr, args, &hdr);
  2020. encode_getfattr(xdr, args->bitmask, &hdr);
  2021. encode_nops(&hdr);
  2022. }
  2023. /*
  2024. * Encode an OPEN request
  2025. */
  2026. static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
  2027. struct nfs_openargs *args)
  2028. {
  2029. struct compound_hdr hdr = {
  2030. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2031. };
  2032. encode_compound_hdr(xdr, req, &hdr);
  2033. encode_sequence(xdr, &args->seq_args, &hdr);
  2034. encode_putfh(xdr, args->fh, &hdr);
  2035. encode_open(xdr, args, &hdr);
  2036. encode_getfh(xdr, &hdr);
  2037. if (args->access)
  2038. encode_access(xdr, args->access, &hdr);
  2039. encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
  2040. encode_nops(&hdr);
  2041. }
  2042. /*
  2043. * Encode an OPEN_CONFIRM request
  2044. */
  2045. static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
  2046. struct xdr_stream *xdr,
  2047. struct nfs_open_confirmargs *args)
  2048. {
  2049. struct compound_hdr hdr = {
  2050. .nops = 0,
  2051. };
  2052. encode_compound_hdr(xdr, req, &hdr);
  2053. encode_putfh(xdr, args->fh, &hdr);
  2054. encode_open_confirm(xdr, args, &hdr);
  2055. encode_nops(&hdr);
  2056. }
  2057. /*
  2058. * Encode an OPEN request with no attributes.
  2059. */
  2060. static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
  2061. struct xdr_stream *xdr,
  2062. struct nfs_openargs *args)
  2063. {
  2064. struct compound_hdr hdr = {
  2065. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2066. };
  2067. encode_compound_hdr(xdr, req, &hdr);
  2068. encode_sequence(xdr, &args->seq_args, &hdr);
  2069. encode_putfh(xdr, args->fh, &hdr);
  2070. encode_open(xdr, args, &hdr);
  2071. if (args->access)
  2072. encode_access(xdr, args->access, &hdr);
  2073. encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
  2074. encode_nops(&hdr);
  2075. }
  2076. /*
  2077. * Encode an OPEN_DOWNGRADE request
  2078. */
  2079. static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
  2080. struct xdr_stream *xdr,
  2081. struct nfs_closeargs *args)
  2082. {
  2083. struct compound_hdr hdr = {
  2084. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2085. };
  2086. encode_compound_hdr(xdr, req, &hdr);
  2087. encode_sequence(xdr, &args->seq_args, &hdr);
  2088. encode_putfh(xdr, args->fh, &hdr);
  2089. encode_open_downgrade(xdr, args, &hdr);
  2090. encode_getfattr(xdr, args->bitmask, &hdr);
  2091. encode_nops(&hdr);
  2092. }
  2093. /*
  2094. * Encode a LOCK request
  2095. */
  2096. static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
  2097. struct nfs_lock_args *args)
  2098. {
  2099. struct compound_hdr hdr = {
  2100. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2101. };
  2102. encode_compound_hdr(xdr, req, &hdr);
  2103. encode_sequence(xdr, &args->seq_args, &hdr);
  2104. encode_putfh(xdr, args->fh, &hdr);
  2105. encode_lock(xdr, args, &hdr);
  2106. encode_nops(&hdr);
  2107. }
  2108. /*
  2109. * Encode a LOCKT request
  2110. */
  2111. static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
  2112. struct nfs_lockt_args *args)
  2113. {
  2114. struct compound_hdr hdr = {
  2115. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2116. };
  2117. encode_compound_hdr(xdr, req, &hdr);
  2118. encode_sequence(xdr, &args->seq_args, &hdr);
  2119. encode_putfh(xdr, args->fh, &hdr);
  2120. encode_lockt(xdr, args, &hdr);
  2121. encode_nops(&hdr);
  2122. }
  2123. /*
  2124. * Encode a LOCKU request
  2125. */
  2126. static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
  2127. struct nfs_locku_args *args)
  2128. {
  2129. struct compound_hdr hdr = {
  2130. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2131. };
  2132. encode_compound_hdr(xdr, req, &hdr);
  2133. encode_sequence(xdr, &args->seq_args, &hdr);
  2134. encode_putfh(xdr, args->fh, &hdr);
  2135. encode_locku(xdr, args, &hdr);
  2136. encode_nops(&hdr);
  2137. }
  2138. static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
  2139. struct xdr_stream *xdr,
  2140. struct nfs_release_lockowner_args *args)
  2141. {
  2142. struct compound_hdr hdr = {
  2143. .minorversion = 0,
  2144. };
  2145. encode_compound_hdr(xdr, req, &hdr);
  2146. encode_release_lockowner(xdr, &args->lock_owner, &hdr);
  2147. encode_nops(&hdr);
  2148. }
  2149. /*
  2150. * Encode a READLINK request
  2151. */
  2152. static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
  2153. const struct nfs4_readlink *args)
  2154. {
  2155. struct compound_hdr hdr = {
  2156. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2157. };
  2158. encode_compound_hdr(xdr, req, &hdr);
  2159. encode_sequence(xdr, &args->seq_args, &hdr);
  2160. encode_putfh(xdr, args->fh, &hdr);
  2161. encode_readlink(xdr, args, req, &hdr);
  2162. xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
  2163. args->pgbase, args->pglen);
  2164. encode_nops(&hdr);
  2165. }
  2166. /*
  2167. * Encode a READDIR request
  2168. */
  2169. static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
  2170. const struct nfs4_readdir_arg *args)
  2171. {
  2172. struct compound_hdr hdr = {
  2173. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2174. };
  2175. encode_compound_hdr(xdr, req, &hdr);
  2176. encode_sequence(xdr, &args->seq_args, &hdr);
  2177. encode_putfh(xdr, args->fh, &hdr);
  2178. encode_readdir(xdr, args, req, &hdr);
  2179. xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
  2180. args->pgbase, args->count);
  2181. dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
  2182. __func__, hdr.replen << 2, args->pages,
  2183. args->pgbase, args->count);
  2184. encode_nops(&hdr);
  2185. }
  2186. /*
  2187. * Encode a READ request
  2188. */
  2189. static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
  2190. struct nfs_readargs *args)
  2191. {
  2192. struct compound_hdr hdr = {
  2193. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2194. };
  2195. encode_compound_hdr(xdr, req, &hdr);
  2196. encode_sequence(xdr, &args->seq_args, &hdr);
  2197. encode_putfh(xdr, args->fh, &hdr);
  2198. encode_read(xdr, args, &hdr);
  2199. xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
  2200. args->pages, args->pgbase, args->count);
  2201. req->rq_rcv_buf.flags |= XDRBUF_READ;
  2202. encode_nops(&hdr);
  2203. }
  2204. /*
  2205. * Encode an SETATTR request
  2206. */
  2207. static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
  2208. struct nfs_setattrargs *args)
  2209. {
  2210. struct compound_hdr hdr = {
  2211. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2212. };
  2213. encode_compound_hdr(xdr, req, &hdr);
  2214. encode_sequence(xdr, &args->seq_args, &hdr);
  2215. encode_putfh(xdr, args->fh, &hdr);
  2216. encode_setattr(xdr, args, args->server, &hdr);
  2217. encode_getfattr(xdr, args->bitmask, &hdr);
  2218. encode_nops(&hdr);
  2219. }
  2220. /*
  2221. * Encode a GETACL request
  2222. */
  2223. static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
  2224. struct nfs_getaclargs *args)
  2225. {
  2226. struct compound_hdr hdr = {
  2227. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2228. };
  2229. uint32_t replen;
  2230. encode_compound_hdr(xdr, req, &hdr);
  2231. encode_sequence(xdr, &args->seq_args, &hdr);
  2232. encode_putfh(xdr, args->fh, &hdr);
  2233. replen = hdr.replen + op_decode_hdr_maxsz + 1;
  2234. encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
  2235. xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
  2236. args->acl_pages, args->acl_pgbase, args->acl_len);
  2237. encode_nops(&hdr);
  2238. }
  2239. /*
  2240. * Encode a WRITE request
  2241. */
  2242. static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
  2243. struct nfs_writeargs *args)
  2244. {
  2245. struct compound_hdr hdr = {
  2246. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2247. };
  2248. encode_compound_hdr(xdr, req, &hdr);
  2249. encode_sequence(xdr, &args->seq_args, &hdr);
  2250. encode_putfh(xdr, args->fh, &hdr);
  2251. encode_write(xdr, args, &hdr);
  2252. req->rq_snd_buf.flags |= XDRBUF_WRITE;
  2253. if (args->bitmask)
  2254. encode_getfattr(xdr, args->bitmask, &hdr);
  2255. encode_nops(&hdr);
  2256. }
  2257. /*
  2258. * a COMMIT request
  2259. */
  2260. static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
  2261. struct nfs_commitargs *args)
  2262. {
  2263. struct compound_hdr hdr = {
  2264. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2265. };
  2266. encode_compound_hdr(xdr, req, &hdr);
  2267. encode_sequence(xdr, &args->seq_args, &hdr);
  2268. encode_putfh(xdr, args->fh, &hdr);
  2269. encode_commit(xdr, args, &hdr);
  2270. encode_nops(&hdr);
  2271. }
  2272. /*
  2273. * FSINFO request
  2274. */
  2275. static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
  2276. struct nfs4_fsinfo_arg *args)
  2277. {
  2278. struct compound_hdr hdr = {
  2279. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2280. };
  2281. encode_compound_hdr(xdr, req, &hdr);
  2282. encode_sequence(xdr, &args->seq_args, &hdr);
  2283. encode_putfh(xdr, args->fh, &hdr);
  2284. encode_fsinfo(xdr, args->bitmask, &hdr);
  2285. encode_nops(&hdr);
  2286. }
  2287. /*
  2288. * a PATHCONF request
  2289. */
  2290. static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
  2291. const struct nfs4_pathconf_arg *args)
  2292. {
  2293. struct compound_hdr hdr = {
  2294. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2295. };
  2296. encode_compound_hdr(xdr, req, &hdr);
  2297. encode_sequence(xdr, &args->seq_args, &hdr);
  2298. encode_putfh(xdr, args->fh, &hdr);
  2299. encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
  2300. &hdr);
  2301. encode_nops(&hdr);
  2302. }
  2303. /*
  2304. * a STATFS request
  2305. */
  2306. static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
  2307. const struct nfs4_statfs_arg *args)
  2308. {
  2309. struct compound_hdr hdr = {
  2310. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2311. };
  2312. encode_compound_hdr(xdr, req, &hdr);
  2313. encode_sequence(xdr, &args->seq_args, &hdr);
  2314. encode_putfh(xdr, args->fh, &hdr);
  2315. encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
  2316. args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
  2317. encode_nops(&hdr);
  2318. }
  2319. /*
  2320. * GETATTR_BITMAP request
  2321. */
  2322. static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
  2323. struct xdr_stream *xdr,
  2324. struct nfs4_server_caps_arg *args)
  2325. {
  2326. struct compound_hdr hdr = {
  2327. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2328. };
  2329. encode_compound_hdr(xdr, req, &hdr);
  2330. encode_sequence(xdr, &args->seq_args, &hdr);
  2331. encode_putfh(xdr, args->fhandle, &hdr);
  2332. encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
  2333. FATTR4_WORD0_FH_EXPIRE_TYPE|
  2334. FATTR4_WORD0_LINK_SUPPORT|
  2335. FATTR4_WORD0_SYMLINK_SUPPORT|
  2336. FATTR4_WORD0_ACLSUPPORT, &hdr);
  2337. encode_nops(&hdr);
  2338. }
  2339. /*
  2340. * a RENEW request
  2341. */
  2342. static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
  2343. struct nfs_client *clp)
  2344. {
  2345. struct compound_hdr hdr = {
  2346. .nops = 0,
  2347. };
  2348. encode_compound_hdr(xdr, req, &hdr);
  2349. encode_renew(xdr, clp->cl_clientid, &hdr);
  2350. encode_nops(&hdr);
  2351. }
  2352. /*
  2353. * a SETCLIENTID request
  2354. */
  2355. static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
  2356. struct xdr_stream *xdr,
  2357. struct nfs4_setclientid *sc)
  2358. {
  2359. struct compound_hdr hdr = {
  2360. .nops = 0,
  2361. };
  2362. encode_compound_hdr(xdr, req, &hdr);
  2363. encode_setclientid(xdr, sc, &hdr);
  2364. encode_nops(&hdr);
  2365. }
  2366. /*
  2367. * a SETCLIENTID_CONFIRM request
  2368. */
  2369. static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
  2370. struct xdr_stream *xdr,
  2371. struct nfs4_setclientid_res *arg)
  2372. {
  2373. struct compound_hdr hdr = {
  2374. .nops = 0,
  2375. };
  2376. const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
  2377. encode_compound_hdr(xdr, req, &hdr);
  2378. encode_setclientid_confirm(xdr, arg, &hdr);
  2379. encode_putrootfh(xdr, &hdr);
  2380. encode_fsinfo(xdr, lease_bitmap, &hdr);
  2381. encode_nops(&hdr);
  2382. }
  2383. /*
  2384. * DELEGRETURN request
  2385. */
  2386. static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
  2387. struct xdr_stream *xdr,
  2388. const struct nfs4_delegreturnargs *args)
  2389. {
  2390. struct compound_hdr hdr = {
  2391. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2392. };
  2393. encode_compound_hdr(xdr, req, &hdr);
  2394. encode_sequence(xdr, &args->seq_args, &hdr);
  2395. encode_putfh(xdr, args->fhandle, &hdr);
  2396. encode_getfattr(xdr, args->bitmask, &hdr);
  2397. encode_delegreturn(xdr, args->stateid, &hdr);
  2398. encode_nops(&hdr);
  2399. }
  2400. /*
  2401. * Encode FS_LOCATIONS request
  2402. */
  2403. static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
  2404. struct xdr_stream *xdr,
  2405. struct nfs4_fs_locations_arg *args)
  2406. {
  2407. struct compound_hdr hdr = {
  2408. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2409. };
  2410. uint32_t replen;
  2411. encode_compound_hdr(xdr, req, &hdr);
  2412. encode_sequence(xdr, &args->seq_args, &hdr);
  2413. encode_putfh(xdr, args->dir_fh, &hdr);
  2414. encode_lookup(xdr, args->name, &hdr);
  2415. replen = hdr.replen; /* get the attribute into args->page */
  2416. encode_fs_locations(xdr, args->bitmask, &hdr);
  2417. xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
  2418. 0, PAGE_SIZE);
  2419. encode_nops(&hdr);
  2420. }
  2421. /*
  2422. * Encode SECINFO request
  2423. */
  2424. static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
  2425. struct xdr_stream *xdr,
  2426. struct nfs4_secinfo_arg *args)
  2427. {
  2428. struct compound_hdr hdr = {
  2429. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2430. };
  2431. encode_compound_hdr(xdr, req, &hdr);
  2432. encode_sequence(xdr, &args->seq_args, &hdr);
  2433. encode_putfh(xdr, args->dir_fh, &hdr);
  2434. encode_secinfo(xdr, args->name, &hdr);
  2435. encode_nops(&hdr);
  2436. }
  2437. #if defined(CONFIG_NFS_V4_1)
  2438. /*
  2439. * BIND_CONN_TO_SESSION request
  2440. */
  2441. static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
  2442. struct xdr_stream *xdr,
  2443. struct nfs_client *clp)
  2444. {
  2445. struct compound_hdr hdr = {
  2446. .minorversion = clp->cl_mvops->minor_version,
  2447. };
  2448. encode_compound_hdr(xdr, req, &hdr);
  2449. encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
  2450. encode_nops(&hdr);
  2451. }
  2452. /*
  2453. * EXCHANGE_ID request
  2454. */
  2455. static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
  2456. struct xdr_stream *xdr,
  2457. struct nfs41_exchange_id_args *args)
  2458. {
  2459. struct compound_hdr hdr = {
  2460. .minorversion = args->client->cl_mvops->minor_version,
  2461. };
  2462. encode_compound_hdr(xdr, req, &hdr);
  2463. encode_exchange_id(xdr, args, &hdr);
  2464. encode_nops(&hdr);
  2465. }
  2466. /*
  2467. * a CREATE_SESSION request
  2468. */
  2469. static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
  2470. struct xdr_stream *xdr,
  2471. struct nfs41_create_session_args *args)
  2472. {
  2473. struct compound_hdr hdr = {
  2474. .minorversion = args->client->cl_mvops->minor_version,
  2475. };
  2476. encode_compound_hdr(xdr, req, &hdr);
  2477. encode_create_session(xdr, args, &hdr);
  2478. encode_nops(&hdr);
  2479. }
  2480. /*
  2481. * a DESTROY_SESSION request
  2482. */
  2483. static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
  2484. struct xdr_stream *xdr,
  2485. struct nfs4_session *session)
  2486. {
  2487. struct compound_hdr hdr = {
  2488. .minorversion = session->clp->cl_mvops->minor_version,
  2489. };
  2490. encode_compound_hdr(xdr, req, &hdr);
  2491. encode_destroy_session(xdr, session, &hdr);
  2492. encode_nops(&hdr);
  2493. }
  2494. /*
  2495. * a DESTROY_CLIENTID request
  2496. */
  2497. static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
  2498. struct xdr_stream *xdr,
  2499. struct nfs_client *clp)
  2500. {
  2501. struct compound_hdr hdr = {
  2502. .minorversion = clp->cl_mvops->minor_version,
  2503. };
  2504. encode_compound_hdr(xdr, req, &hdr);
  2505. encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
  2506. encode_nops(&hdr);
  2507. }
  2508. /*
  2509. * a SEQUENCE request
  2510. */
  2511. static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
  2512. struct nfs4_sequence_args *args)
  2513. {
  2514. struct compound_hdr hdr = {
  2515. .minorversion = nfs4_xdr_minorversion(args),
  2516. };
  2517. encode_compound_hdr(xdr, req, &hdr);
  2518. encode_sequence(xdr, args, &hdr);
  2519. encode_nops(&hdr);
  2520. }
  2521. /*
  2522. * a GET_LEASE_TIME request
  2523. */
  2524. static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
  2525. struct xdr_stream *xdr,
  2526. struct nfs4_get_lease_time_args *args)
  2527. {
  2528. struct compound_hdr hdr = {
  2529. .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
  2530. };
  2531. const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
  2532. encode_compound_hdr(xdr, req, &hdr);
  2533. encode_sequence(xdr, &args->la_seq_args, &hdr);
  2534. encode_putrootfh(xdr, &hdr);
  2535. encode_fsinfo(xdr, lease_bitmap, &hdr);
  2536. encode_nops(&hdr);
  2537. }
  2538. /*
  2539. * a RECLAIM_COMPLETE request
  2540. */
  2541. static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
  2542. struct xdr_stream *xdr,
  2543. struct nfs41_reclaim_complete_args *args)
  2544. {
  2545. struct compound_hdr hdr = {
  2546. .minorversion = nfs4_xdr_minorversion(&args->seq_args)
  2547. };
  2548. encode_compound_hdr(xdr, req, &hdr);
  2549. encode_sequence(xdr, &args->seq_args, &hdr);
  2550. encode_reclaim_complete(xdr, args, &hdr);
  2551. encode_nops(&hdr);
  2552. }
  2553. /*
  2554. * Encode GETDEVICELIST request
  2555. */
  2556. static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
  2557. struct xdr_stream *xdr,
  2558. struct nfs4_getdevicelist_args *args)
  2559. {
  2560. struct compound_hdr hdr = {
  2561. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2562. };
  2563. encode_compound_hdr(xdr, req, &hdr);
  2564. encode_sequence(xdr, &args->seq_args, &hdr);
  2565. encode_putfh(xdr, args->fh, &hdr);
  2566. encode_getdevicelist(xdr, args, &hdr);
  2567. encode_nops(&hdr);
  2568. }
  2569. /*
  2570. * Encode GETDEVICEINFO request
  2571. */
  2572. static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
  2573. struct xdr_stream *xdr,
  2574. struct nfs4_getdeviceinfo_args *args)
  2575. {
  2576. struct compound_hdr hdr = {
  2577. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2578. };
  2579. encode_compound_hdr(xdr, req, &hdr);
  2580. encode_sequence(xdr, &args->seq_args, &hdr);
  2581. encode_getdeviceinfo(xdr, args, &hdr);
  2582. /* set up reply kvec. Subtract notification bitmap max size (2)
  2583. * so that notification bitmap is put in xdr_buf tail */
  2584. xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
  2585. args->pdev->pages, args->pdev->pgbase,
  2586. args->pdev->pglen);
  2587. encode_nops(&hdr);
  2588. }
  2589. /*
  2590. * Encode LAYOUTGET request
  2591. */
  2592. static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
  2593. struct xdr_stream *xdr,
  2594. struct nfs4_layoutget_args *args)
  2595. {
  2596. struct compound_hdr hdr = {
  2597. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2598. };
  2599. encode_compound_hdr(xdr, req, &hdr);
  2600. encode_sequence(xdr, &args->seq_args, &hdr);
  2601. encode_putfh(xdr, NFS_FH(args->inode), &hdr);
  2602. encode_layoutget(xdr, args, &hdr);
  2603. xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
  2604. args->layout.pages, 0, args->layout.pglen);
  2605. encode_nops(&hdr);
  2606. }
  2607. /*
  2608. * Encode LAYOUTCOMMIT request
  2609. */
  2610. static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
  2611. struct xdr_stream *xdr,
  2612. struct nfs4_layoutcommit_args *args)
  2613. {
  2614. struct nfs4_layoutcommit_data *data =
  2615. container_of(args, struct nfs4_layoutcommit_data, args);
  2616. struct compound_hdr hdr = {
  2617. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2618. };
  2619. encode_compound_hdr(xdr, req, &hdr);
  2620. encode_sequence(xdr, &args->seq_args, &hdr);
  2621. encode_putfh(xdr, NFS_FH(args->inode), &hdr);
  2622. encode_layoutcommit(xdr, data->args.inode, args, &hdr);
  2623. encode_getfattr(xdr, args->bitmask, &hdr);
  2624. encode_nops(&hdr);
  2625. }
  2626. /*
  2627. * Encode LAYOUTRETURN request
  2628. */
  2629. static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
  2630. struct xdr_stream *xdr,
  2631. struct nfs4_layoutreturn_args *args)
  2632. {
  2633. struct compound_hdr hdr = {
  2634. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2635. };
  2636. encode_compound_hdr(xdr, req, &hdr);
  2637. encode_sequence(xdr, &args->seq_args, &hdr);
  2638. encode_putfh(xdr, NFS_FH(args->inode), &hdr);
  2639. encode_layoutreturn(xdr, args, &hdr);
  2640. encode_nops(&hdr);
  2641. }
  2642. /*
  2643. * Encode SECINFO_NO_NAME request
  2644. */
  2645. static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
  2646. struct xdr_stream *xdr,
  2647. struct nfs41_secinfo_no_name_args *args)
  2648. {
  2649. struct compound_hdr hdr = {
  2650. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2651. };
  2652. encode_compound_hdr(xdr, req, &hdr);
  2653. encode_sequence(xdr, &args->seq_args, &hdr);
  2654. encode_putrootfh(xdr, &hdr);
  2655. encode_secinfo_no_name(xdr, args, &hdr);
  2656. encode_nops(&hdr);
  2657. return 0;
  2658. }
  2659. /*
  2660. * Encode TEST_STATEID request
  2661. */
  2662. static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
  2663. struct xdr_stream *xdr,
  2664. struct nfs41_test_stateid_args *args)
  2665. {
  2666. struct compound_hdr hdr = {
  2667. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2668. };
  2669. encode_compound_hdr(xdr, req, &hdr);
  2670. encode_sequence(xdr, &args->seq_args, &hdr);
  2671. encode_test_stateid(xdr, args, &hdr);
  2672. encode_nops(&hdr);
  2673. }
  2674. /*
  2675. * Encode FREE_STATEID request
  2676. */
  2677. static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
  2678. struct xdr_stream *xdr,
  2679. struct nfs41_free_stateid_args *args)
  2680. {
  2681. struct compound_hdr hdr = {
  2682. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  2683. };
  2684. encode_compound_hdr(xdr, req, &hdr);
  2685. encode_sequence(xdr, &args->seq_args, &hdr);
  2686. encode_free_stateid(xdr, args, &hdr);
  2687. encode_nops(&hdr);
  2688. }
  2689. #endif /* CONFIG_NFS_V4_1 */
  2690. static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
  2691. {
  2692. dprintk("nfs: %s: prematurely hit end of receive buffer. "
  2693. "Remaining buffer length is %tu words.\n",
  2694. func, xdr->end - xdr->p);
  2695. }
  2696. static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
  2697. {
  2698. __be32 *p;
  2699. p = xdr_inline_decode(xdr, 4);
  2700. if (unlikely(!p))
  2701. goto out_overflow;
  2702. *len = be32_to_cpup(p);
  2703. p = xdr_inline_decode(xdr, *len);
  2704. if (unlikely(!p))
  2705. goto out_overflow;
  2706. *string = (char *)p;
  2707. return 0;
  2708. out_overflow:
  2709. print_overflow_msg(__func__, xdr);
  2710. return -EIO;
  2711. }
  2712. static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
  2713. {
  2714. __be32 *p;
  2715. p = xdr_inline_decode(xdr, 8);
  2716. if (unlikely(!p))
  2717. goto out_overflow;
  2718. hdr->status = be32_to_cpup(p++);
  2719. hdr->taglen = be32_to_cpup(p);
  2720. p = xdr_inline_decode(xdr, hdr->taglen + 4);
  2721. if (unlikely(!p))
  2722. goto out_overflow;
  2723. hdr->tag = (char *)p;
  2724. p += XDR_QUADLEN(hdr->taglen);
  2725. hdr->nops = be32_to_cpup(p);
  2726. if (unlikely(hdr->nops < 1))
  2727. return nfs4_stat_to_errno(hdr->status);
  2728. return 0;
  2729. out_overflow:
  2730. print_overflow_msg(__func__, xdr);
  2731. return -EIO;
  2732. }
  2733. static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
  2734. {
  2735. __be32 *p;
  2736. uint32_t opnum;
  2737. int32_t nfserr;
  2738. p = xdr_inline_decode(xdr, 8);
  2739. if (unlikely(!p))
  2740. goto out_overflow;
  2741. opnum = be32_to_cpup(p++);
  2742. if (opnum != expected) {
  2743. dprintk("nfs: Server returned operation"
  2744. " %d but we issued a request for %d\n",
  2745. opnum, expected);
  2746. return -EIO;
  2747. }
  2748. nfserr = be32_to_cpup(p);
  2749. if (nfserr != NFS_OK)
  2750. return nfs4_stat_to_errno(nfserr);
  2751. return 0;
  2752. out_overflow:
  2753. print_overflow_msg(__func__, xdr);
  2754. return -EIO;
  2755. }
  2756. /* Dummy routine */
  2757. static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
  2758. {
  2759. __be32 *p;
  2760. unsigned int strlen;
  2761. char *str;
  2762. p = xdr_inline_decode(xdr, 12);
  2763. if (likely(p))
  2764. return decode_opaque_inline(xdr, &strlen, &str);
  2765. print_overflow_msg(__func__, xdr);
  2766. return -EIO;
  2767. }
  2768. static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
  2769. {
  2770. uint32_t bmlen;
  2771. __be32 *p;
  2772. p = xdr_inline_decode(xdr, 4);
  2773. if (unlikely(!p))
  2774. goto out_overflow;
  2775. bmlen = be32_to_cpup(p);
  2776. bitmap[0] = bitmap[1] = bitmap[2] = 0;
  2777. p = xdr_inline_decode(xdr, (bmlen << 2));
  2778. if (unlikely(!p))
  2779. goto out_overflow;
  2780. if (bmlen > 0) {
  2781. bitmap[0] = be32_to_cpup(p++);
  2782. if (bmlen > 1) {
  2783. bitmap[1] = be32_to_cpup(p++);
  2784. if (bmlen > 2)
  2785. bitmap[2] = be32_to_cpup(p);
  2786. }
  2787. }
  2788. return 0;
  2789. out_overflow:
  2790. print_overflow_msg(__func__, xdr);
  2791. return -EIO;
  2792. }
  2793. static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
  2794. {
  2795. __be32 *p;
  2796. p = xdr_inline_decode(xdr, 4);
  2797. if (unlikely(!p))
  2798. goto out_overflow;
  2799. *attrlen = be32_to_cpup(p);
  2800. *savep = xdr_stream_pos(xdr);
  2801. return 0;
  2802. out_overflow:
  2803. print_overflow_msg(__func__, xdr);
  2804. return -EIO;
  2805. }
  2806. static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
  2807. {
  2808. if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
  2809. int ret;
  2810. ret = decode_attr_bitmap(xdr, bitmask);
  2811. if (unlikely(ret < 0))
  2812. return ret;
  2813. bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
  2814. } else
  2815. bitmask[0] = bitmask[1] = bitmask[2] = 0;
  2816. dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
  2817. bitmask[0], bitmask[1], bitmask[2]);
  2818. return 0;
  2819. }
  2820. static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
  2821. {
  2822. __be32 *p;
  2823. int ret = 0;
  2824. *type = 0;
  2825. if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
  2826. return -EIO;
  2827. if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
  2828. p = xdr_inline_decode(xdr, 4);
  2829. if (unlikely(!p))
  2830. goto out_overflow;
  2831. *type = be32_to_cpup(p);
  2832. if (*type < NF4REG || *type > NF4NAMEDATTR) {
  2833. dprintk("%s: bad type %d\n", __func__, *type);
  2834. return -EIO;
  2835. }
  2836. bitmap[0] &= ~FATTR4_WORD0_TYPE;
  2837. ret = NFS_ATTR_FATTR_TYPE;
  2838. }
  2839. dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
  2840. return ret;
  2841. out_overflow:
  2842. print_overflow_msg(__func__, xdr);
  2843. return -EIO;
  2844. }
  2845. static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
  2846. uint32_t *bitmap, uint32_t *type)
  2847. {
  2848. __be32 *p;
  2849. *type = 0;
  2850. if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
  2851. return -EIO;
  2852. if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
  2853. p = xdr_inline_decode(xdr, 4);
  2854. if (unlikely(!p))
  2855. goto out_overflow;
  2856. *type = be32_to_cpup(p);
  2857. bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
  2858. }
  2859. dprintk("%s: expire type=0x%x\n", __func__, *type);
  2860. return 0;
  2861. out_overflow:
  2862. print_overflow_msg(__func__, xdr);
  2863. return -EIO;
  2864. }
  2865. static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
  2866. {
  2867. __be32 *p;
  2868. int ret = 0;
  2869. *change = 0;
  2870. if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
  2871. return -EIO;
  2872. if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
  2873. p = xdr_inline_decode(xdr, 8);
  2874. if (unlikely(!p))
  2875. goto out_overflow;
  2876. xdr_decode_hyper(p, change);
  2877. bitmap[0] &= ~FATTR4_WORD0_CHANGE;
  2878. ret = NFS_ATTR_FATTR_CHANGE;
  2879. }
  2880. dprintk("%s: change attribute=%Lu\n", __func__,
  2881. (unsigned long long)*change);
  2882. return ret;
  2883. out_overflow:
  2884. print_overflow_msg(__func__, xdr);
  2885. return -EIO;
  2886. }
  2887. static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
  2888. {
  2889. __be32 *p;
  2890. int ret = 0;
  2891. *size = 0;
  2892. if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
  2893. return -EIO;
  2894. if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
  2895. p = xdr_inline_decode(xdr, 8);
  2896. if (unlikely(!p))
  2897. goto out_overflow;
  2898. xdr_decode_hyper(p, size);
  2899. bitmap[0] &= ~FATTR4_WORD0_SIZE;
  2900. ret = NFS_ATTR_FATTR_SIZE;
  2901. }
  2902. dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
  2903. return ret;
  2904. out_overflow:
  2905. print_overflow_msg(__func__, xdr);
  2906. return -EIO;
  2907. }
  2908. static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
  2909. {
  2910. __be32 *p;
  2911. *res = 0;
  2912. if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
  2913. return -EIO;
  2914. if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
  2915. p = xdr_inline_decode(xdr, 4);
  2916. if (unlikely(!p))
  2917. goto out_overflow;
  2918. *res = be32_to_cpup(p);
  2919. bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
  2920. }
  2921. dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
  2922. return 0;
  2923. out_overflow:
  2924. print_overflow_msg(__func__, xdr);
  2925. return -EIO;
  2926. }
  2927. static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
  2928. {
  2929. __be32 *p;
  2930. *res = 0;
  2931. if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
  2932. return -EIO;
  2933. if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
  2934. p = xdr_inline_decode(xdr, 4);
  2935. if (unlikely(!p))
  2936. goto out_overflow;
  2937. *res = be32_to_cpup(p);
  2938. bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
  2939. }
  2940. dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
  2941. return 0;
  2942. out_overflow:
  2943. print_overflow_msg(__func__, xdr);
  2944. return -EIO;
  2945. }
  2946. static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
  2947. {
  2948. __be32 *p;
  2949. int ret = 0;
  2950. fsid->major = 0;
  2951. fsid->minor = 0;
  2952. if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
  2953. return -EIO;
  2954. if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
  2955. p = xdr_inline_decode(xdr, 16);
  2956. if (unlikely(!p))
  2957. goto out_overflow;
  2958. p = xdr_decode_hyper(p, &fsid->major);
  2959. xdr_decode_hyper(p, &fsid->minor);
  2960. bitmap[0] &= ~FATTR4_WORD0_FSID;
  2961. ret = NFS_ATTR_FATTR_FSID;
  2962. }
  2963. dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
  2964. (unsigned long long)fsid->major,
  2965. (unsigned long long)fsid->minor);
  2966. return ret;
  2967. out_overflow:
  2968. print_overflow_msg(__func__, xdr);
  2969. return -EIO;
  2970. }
  2971. static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
  2972. {
  2973. __be32 *p;
  2974. *res = 60;
  2975. if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
  2976. return -EIO;
  2977. if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
  2978. p = xdr_inline_decode(xdr, 4);
  2979. if (unlikely(!p))
  2980. goto out_overflow;
  2981. *res = be32_to_cpup(p);
  2982. bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
  2983. }
  2984. dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
  2985. return 0;
  2986. out_overflow:
  2987. print_overflow_msg(__func__, xdr);
  2988. return -EIO;
  2989. }
  2990. static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
  2991. {
  2992. __be32 *p;
  2993. if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
  2994. return -EIO;
  2995. if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
  2996. p = xdr_inline_decode(xdr, 4);
  2997. if (unlikely(!p))
  2998. goto out_overflow;
  2999. bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
  3000. *res = -be32_to_cpup(p);
  3001. }
  3002. return 0;
  3003. out_overflow:
  3004. print_overflow_msg(__func__, xdr);
  3005. return -EIO;
  3006. }
  3007. static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
  3008. {
  3009. __be32 *p;
  3010. int len;
  3011. if (fh != NULL)
  3012. memset(fh, 0, sizeof(*fh));
  3013. if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
  3014. return -EIO;
  3015. if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
  3016. p = xdr_inline_decode(xdr, 4);
  3017. if (unlikely(!p))
  3018. goto out_overflow;
  3019. len = be32_to_cpup(p);
  3020. if (len > NFS4_FHSIZE)
  3021. return -EIO;
  3022. p = xdr_inline_decode(xdr, len);
  3023. if (unlikely(!p))
  3024. goto out_overflow;
  3025. if (fh != NULL) {
  3026. memcpy(fh->data, p, len);
  3027. fh->size = len;
  3028. }
  3029. bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
  3030. }
  3031. return 0;
  3032. out_overflow:
  3033. print_overflow_msg(__func__, xdr);
  3034. return -EIO;
  3035. }
  3036. static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
  3037. {
  3038. __be32 *p;
  3039. *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
  3040. if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
  3041. return -EIO;
  3042. if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
  3043. p = xdr_inline_decode(xdr, 4);
  3044. if (unlikely(!p))
  3045. goto out_overflow;
  3046. *res = be32_to_cpup(p);
  3047. bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
  3048. }
  3049. dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
  3050. return 0;
  3051. out_overflow:
  3052. print_overflow_msg(__func__, xdr);
  3053. return -EIO;
  3054. }
  3055. static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
  3056. {
  3057. __be32 *p;
  3058. int ret = 0;
  3059. *fileid = 0;
  3060. if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
  3061. return -EIO;
  3062. if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
  3063. p = xdr_inline_decode(xdr, 8);
  3064. if (unlikely(!p))
  3065. goto out_overflow;
  3066. xdr_decode_hyper(p, fileid);
  3067. bitmap[0] &= ~FATTR4_WORD0_FILEID;
  3068. ret = NFS_ATTR_FATTR_FILEID;
  3069. }
  3070. dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
  3071. return ret;
  3072. out_overflow:
  3073. print_overflow_msg(__func__, xdr);
  3074. return -EIO;
  3075. }
  3076. static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
  3077. {
  3078. __be32 *p;
  3079. int ret = 0;
  3080. *fileid = 0;
  3081. if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
  3082. return -EIO;
  3083. if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
  3084. p = xdr_inline_decode(xdr, 8);
  3085. if (unlikely(!p))
  3086. goto out_overflow;
  3087. xdr_decode_hyper(p, fileid);
  3088. bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
  3089. ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
  3090. }
  3091. dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
  3092. return ret;
  3093. out_overflow:
  3094. print_overflow_msg(__func__, xdr);
  3095. return -EIO;
  3096. }
  3097. static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
  3098. {
  3099. __be32 *p;
  3100. int status = 0;
  3101. *res = 0;
  3102. if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
  3103. return -EIO;
  3104. if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
  3105. p = xdr_inline_decode(xdr, 8);
  3106. if (unlikely(!p))
  3107. goto out_overflow;
  3108. xdr_decode_hyper(p, res);
  3109. bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
  3110. }
  3111. dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
  3112. return status;
  3113. out_overflow:
  3114. print_overflow_msg(__func__, xdr);
  3115. return -EIO;
  3116. }
  3117. static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
  3118. {
  3119. __be32 *p;
  3120. int status = 0;
  3121. *res = 0;
  3122. if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
  3123. return -EIO;
  3124. if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
  3125. p = xdr_inline_decode(xdr, 8);
  3126. if (unlikely(!p))
  3127. goto out_overflow;
  3128. xdr_decode_hyper(p, res);
  3129. bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
  3130. }
  3131. dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
  3132. return status;
  3133. out_overflow:
  3134. print_overflow_msg(__func__, xdr);
  3135. return -EIO;
  3136. }
  3137. static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
  3138. {
  3139. __be32 *p;
  3140. int status = 0;
  3141. *res = 0;
  3142. if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
  3143. return -EIO;
  3144. if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
  3145. p = xdr_inline_decode(xdr, 8);
  3146. if (unlikely(!p))
  3147. goto out_overflow;
  3148. xdr_decode_hyper(p, res);
  3149. bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
  3150. }
  3151. dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
  3152. return status;
  3153. out_overflow:
  3154. print_overflow_msg(__func__, xdr);
  3155. return -EIO;
  3156. }
  3157. static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
  3158. {
  3159. u32 n;
  3160. __be32 *p;
  3161. int status = 0;
  3162. p = xdr_inline_decode(xdr, 4);
  3163. if (unlikely(!p))
  3164. goto out_overflow;
  3165. n = be32_to_cpup(p);
  3166. if (n == 0)
  3167. goto root_path;
  3168. dprintk("pathname4: ");
  3169. path->ncomponents = 0;
  3170. while (path->ncomponents < n) {
  3171. struct nfs4_string *component = &path->components[path->ncomponents];
  3172. status = decode_opaque_inline(xdr, &component->len, &component->data);
  3173. if (unlikely(status != 0))
  3174. goto out_eio;
  3175. ifdebug (XDR)
  3176. pr_cont("%s%.*s ",
  3177. (path->ncomponents != n ? "/ " : ""),
  3178. component->len, component->data);
  3179. if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
  3180. path->ncomponents++;
  3181. else {
  3182. dprintk("cannot parse %d components in path\n", n);
  3183. goto out_eio;
  3184. }
  3185. }
  3186. out:
  3187. return status;
  3188. root_path:
  3189. /* a root pathname is sent as a zero component4 */
  3190. path->ncomponents = 1;
  3191. path->components[0].len=0;
  3192. path->components[0].data=NULL;
  3193. dprintk("pathname4: /\n");
  3194. goto out;
  3195. out_eio:
  3196. dprintk(" status %d", status);
  3197. status = -EIO;
  3198. goto out;
  3199. out_overflow:
  3200. print_overflow_msg(__func__, xdr);
  3201. return -EIO;
  3202. }
  3203. static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
  3204. {
  3205. int n;
  3206. __be32 *p;
  3207. int status = -EIO;
  3208. if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
  3209. goto out;
  3210. status = 0;
  3211. if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
  3212. goto out;
  3213. status = -EIO;
  3214. /* Ignore borken servers that return unrequested attrs */
  3215. if (unlikely(res == NULL))
  3216. goto out;
  3217. dprintk("%s: fsroot:\n", __func__);
  3218. status = decode_pathname(xdr, &res->fs_path);
  3219. if (unlikely(status != 0))
  3220. goto out;
  3221. p = xdr_inline_decode(xdr, 4);
  3222. if (unlikely(!p))
  3223. goto out_overflow;
  3224. n = be32_to_cpup(p);
  3225. if (n <= 0)
  3226. goto out_eio;
  3227. res->nlocations = 0;
  3228. while (res->nlocations < n) {
  3229. u32 m;
  3230. struct nfs4_fs_location *loc = &res->locations[res->nlocations];
  3231. p = xdr_inline_decode(xdr, 4);
  3232. if (unlikely(!p))
  3233. goto out_overflow;
  3234. m = be32_to_cpup(p);
  3235. loc->nservers = 0;
  3236. dprintk("%s: servers:\n", __func__);
  3237. while (loc->nservers < m) {
  3238. struct nfs4_string *server = &loc->servers[loc->nservers];
  3239. status = decode_opaque_inline(xdr, &server->len, &server->data);
  3240. if (unlikely(status != 0))
  3241. goto out_eio;
  3242. dprintk("%s ", server->data);
  3243. if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
  3244. loc->nservers++;
  3245. else {
  3246. unsigned int i;
  3247. dprintk("%s: using first %u of %u servers "
  3248. "returned for location %u\n",
  3249. __func__,
  3250. NFS4_FS_LOCATION_MAXSERVERS,
  3251. m, res->nlocations);
  3252. for (i = loc->nservers; i < m; i++) {
  3253. unsigned int len;
  3254. char *data;
  3255. status = decode_opaque_inline(xdr, &len, &data);
  3256. if (unlikely(status != 0))
  3257. goto out_eio;
  3258. }
  3259. }
  3260. }
  3261. status = decode_pathname(xdr, &loc->rootpath);
  3262. if (unlikely(status != 0))
  3263. goto out_eio;
  3264. if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
  3265. res->nlocations++;
  3266. }
  3267. if (res->nlocations != 0)
  3268. status = NFS_ATTR_FATTR_V4_LOCATIONS;
  3269. out:
  3270. dprintk("%s: fs_locations done, error = %d\n", __func__, status);
  3271. return status;
  3272. out_overflow:
  3273. print_overflow_msg(__func__, xdr);
  3274. out_eio:
  3275. status = -EIO;
  3276. goto out;
  3277. }
  3278. static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
  3279. {
  3280. __be32 *p;
  3281. int status = 0;
  3282. *res = 0;
  3283. if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
  3284. return -EIO;
  3285. if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
  3286. p = xdr_inline_decode(xdr, 8);
  3287. if (unlikely(!p))
  3288. goto out_overflow;
  3289. xdr_decode_hyper(p, res);
  3290. bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
  3291. }
  3292. dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
  3293. return status;
  3294. out_overflow:
  3295. print_overflow_msg(__func__, xdr);
  3296. return -EIO;
  3297. }
  3298. static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
  3299. {
  3300. __be32 *p;
  3301. int status = 0;
  3302. *maxlink = 1;
  3303. if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
  3304. return -EIO;
  3305. if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
  3306. p = xdr_inline_decode(xdr, 4);
  3307. if (unlikely(!p))
  3308. goto out_overflow;
  3309. *maxlink = be32_to_cpup(p);
  3310. bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
  3311. }
  3312. dprintk("%s: maxlink=%u\n", __func__, *maxlink);
  3313. return status;
  3314. out_overflow:
  3315. print_overflow_msg(__func__, xdr);
  3316. return -EIO;
  3317. }
  3318. static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
  3319. {
  3320. __be32 *p;
  3321. int status = 0;
  3322. *maxname = 1024;
  3323. if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
  3324. return -EIO;
  3325. if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
  3326. p = xdr_inline_decode(xdr, 4);
  3327. if (unlikely(!p))
  3328. goto out_overflow;
  3329. *maxname = be32_to_cpup(p);
  3330. bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
  3331. }
  3332. dprintk("%s: maxname=%u\n", __func__, *maxname);
  3333. return status;
  3334. out_overflow:
  3335. print_overflow_msg(__func__, xdr);
  3336. return -EIO;
  3337. }
  3338. static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
  3339. {
  3340. __be32 *p;
  3341. int status = 0;
  3342. *res = 1024;
  3343. if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
  3344. return -EIO;
  3345. if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
  3346. uint64_t maxread;
  3347. p = xdr_inline_decode(xdr, 8);
  3348. if (unlikely(!p))
  3349. goto out_overflow;
  3350. xdr_decode_hyper(p, &maxread);
  3351. if (maxread > 0x7FFFFFFF)
  3352. maxread = 0x7FFFFFFF;
  3353. *res = (uint32_t)maxread;
  3354. bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
  3355. }
  3356. dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
  3357. return status;
  3358. out_overflow:
  3359. print_overflow_msg(__func__, xdr);
  3360. return -EIO;
  3361. }
  3362. static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
  3363. {
  3364. __be32 *p;
  3365. int status = 0;
  3366. *res = 1024;
  3367. if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
  3368. return -EIO;
  3369. if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
  3370. uint64_t maxwrite;
  3371. p = xdr_inline_decode(xdr, 8);
  3372. if (unlikely(!p))
  3373. goto out_overflow;
  3374. xdr_decode_hyper(p, &maxwrite);
  3375. if (maxwrite > 0x7FFFFFFF)
  3376. maxwrite = 0x7FFFFFFF;
  3377. *res = (uint32_t)maxwrite;
  3378. bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
  3379. }
  3380. dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
  3381. return status;
  3382. out_overflow:
  3383. print_overflow_msg(__func__, xdr);
  3384. return -EIO;
  3385. }
  3386. static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
  3387. {
  3388. uint32_t tmp;
  3389. __be32 *p;
  3390. int ret = 0;
  3391. *mode = 0;
  3392. if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
  3393. return -EIO;
  3394. if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
  3395. p = xdr_inline_decode(xdr, 4);
  3396. if (unlikely(!p))
  3397. goto out_overflow;
  3398. tmp = be32_to_cpup(p);
  3399. *mode = tmp & ~S_IFMT;
  3400. bitmap[1] &= ~FATTR4_WORD1_MODE;
  3401. ret = NFS_ATTR_FATTR_MODE;
  3402. }
  3403. dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
  3404. return ret;
  3405. out_overflow:
  3406. print_overflow_msg(__func__, xdr);
  3407. return -EIO;
  3408. }
  3409. static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
  3410. {
  3411. __be32 *p;
  3412. int ret = 0;
  3413. *nlink = 1;
  3414. if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
  3415. return -EIO;
  3416. if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
  3417. p = xdr_inline_decode(xdr, 4);
  3418. if (unlikely(!p))
  3419. goto out_overflow;
  3420. *nlink = be32_to_cpup(p);
  3421. bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
  3422. ret = NFS_ATTR_FATTR_NLINK;
  3423. }
  3424. dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
  3425. return ret;
  3426. out_overflow:
  3427. print_overflow_msg(__func__, xdr);
  3428. return -EIO;
  3429. }
  3430. static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
  3431. const struct nfs_server *server, kuid_t *uid,
  3432. struct nfs4_string *owner_name)
  3433. {
  3434. uint32_t len;
  3435. __be32 *p;
  3436. int ret = 0;
  3437. *uid = make_kuid(&init_user_ns, -2);
  3438. if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
  3439. return -EIO;
  3440. if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
  3441. p = xdr_inline_decode(xdr, 4);
  3442. if (unlikely(!p))
  3443. goto out_overflow;
  3444. len = be32_to_cpup(p);
  3445. p = xdr_inline_decode(xdr, len);
  3446. if (unlikely(!p))
  3447. goto out_overflow;
  3448. if (owner_name != NULL) {
  3449. owner_name->data = kmemdup(p, len, GFP_NOWAIT);
  3450. if (owner_name->data != NULL) {
  3451. owner_name->len = len;
  3452. ret = NFS_ATTR_FATTR_OWNER_NAME;
  3453. }
  3454. } else if (len < XDR_MAX_NETOBJ) {
  3455. if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
  3456. ret = NFS_ATTR_FATTR_OWNER;
  3457. else
  3458. dprintk("%s: nfs_map_name_to_uid failed!\n",
  3459. __func__);
  3460. } else
  3461. dprintk("%s: name too long (%u)!\n",
  3462. __func__, len);
  3463. bitmap[1] &= ~FATTR4_WORD1_OWNER;
  3464. }
  3465. dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
  3466. return ret;
  3467. out_overflow:
  3468. print_overflow_msg(__func__, xdr);
  3469. return -EIO;
  3470. }
  3471. static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
  3472. const struct nfs_server *server, kgid_t *gid,
  3473. struct nfs4_string *group_name)
  3474. {
  3475. uint32_t len;
  3476. __be32 *p;
  3477. int ret = 0;
  3478. *gid = make_kgid(&init_user_ns, -2);
  3479. if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
  3480. return -EIO;
  3481. if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
  3482. p = xdr_inline_decode(xdr, 4);
  3483. if (unlikely(!p))
  3484. goto out_overflow;
  3485. len = be32_to_cpup(p);
  3486. p = xdr_inline_decode(xdr, len);
  3487. if (unlikely(!p))
  3488. goto out_overflow;
  3489. if (group_name != NULL) {
  3490. group_name->data = kmemdup(p, len, GFP_NOWAIT);
  3491. if (group_name->data != NULL) {
  3492. group_name->len = len;
  3493. ret = NFS_ATTR_FATTR_GROUP_NAME;
  3494. }
  3495. } else if (len < XDR_MAX_NETOBJ) {
  3496. if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
  3497. ret = NFS_ATTR_FATTR_GROUP;
  3498. else
  3499. dprintk("%s: nfs_map_group_to_gid failed!\n",
  3500. __func__);
  3501. } else
  3502. dprintk("%s: name too long (%u)!\n",
  3503. __func__, len);
  3504. bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
  3505. }
  3506. dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
  3507. return ret;
  3508. out_overflow:
  3509. print_overflow_msg(__func__, xdr);
  3510. return -EIO;
  3511. }
  3512. static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
  3513. {
  3514. uint32_t major = 0, minor = 0;
  3515. __be32 *p;
  3516. int ret = 0;
  3517. *rdev = MKDEV(0,0);
  3518. if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
  3519. return -EIO;
  3520. if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
  3521. dev_t tmp;
  3522. p = xdr_inline_decode(xdr, 8);
  3523. if (unlikely(!p))
  3524. goto out_overflow;
  3525. major = be32_to_cpup(p++);
  3526. minor = be32_to_cpup(p);
  3527. tmp = MKDEV(major, minor);
  3528. if (MAJOR(tmp) == major && MINOR(tmp) == minor)
  3529. *rdev = tmp;
  3530. bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
  3531. ret = NFS_ATTR_FATTR_RDEV;
  3532. }
  3533. dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
  3534. return ret;
  3535. out_overflow:
  3536. print_overflow_msg(__func__, xdr);
  3537. return -EIO;
  3538. }
  3539. static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
  3540. {
  3541. __be32 *p;
  3542. int status = 0;
  3543. *res = 0;
  3544. if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
  3545. return -EIO;
  3546. if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
  3547. p = xdr_inline_decode(xdr, 8);
  3548. if (unlikely(!p))
  3549. goto out_overflow;
  3550. xdr_decode_hyper(p, res);
  3551. bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
  3552. }
  3553. dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
  3554. return status;
  3555. out_overflow:
  3556. print_overflow_msg(__func__, xdr);
  3557. return -EIO;
  3558. }
  3559. static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
  3560. {
  3561. __be32 *p;
  3562. int status = 0;
  3563. *res = 0;
  3564. if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
  3565. return -EIO;
  3566. if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
  3567. p = xdr_inline_decode(xdr, 8);
  3568. if (unlikely(!p))
  3569. goto out_overflow;
  3570. xdr_decode_hyper(p, res);
  3571. bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
  3572. }
  3573. dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
  3574. return status;
  3575. out_overflow:
  3576. print_overflow_msg(__func__, xdr);
  3577. return -EIO;
  3578. }
  3579. static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
  3580. {
  3581. __be32 *p;
  3582. int status = 0;
  3583. *res = 0;
  3584. if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
  3585. return -EIO;
  3586. if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
  3587. p = xdr_inline_decode(xdr, 8);
  3588. if (unlikely(!p))
  3589. goto out_overflow;
  3590. xdr_decode_hyper(p, res);
  3591. bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
  3592. }
  3593. dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
  3594. return status;
  3595. out_overflow:
  3596. print_overflow_msg(__func__, xdr);
  3597. return -EIO;
  3598. }
  3599. static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
  3600. {
  3601. __be32 *p;
  3602. int ret = 0;
  3603. *used = 0;
  3604. if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
  3605. return -EIO;
  3606. if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
  3607. p = xdr_inline_decode(xdr, 8);
  3608. if (unlikely(!p))
  3609. goto out_overflow;
  3610. xdr_decode_hyper(p, used);
  3611. bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
  3612. ret = NFS_ATTR_FATTR_SPACE_USED;
  3613. }
  3614. dprintk("%s: space used=%Lu\n", __func__,
  3615. (unsigned long long)*used);
  3616. return ret;
  3617. out_overflow:
  3618. print_overflow_msg(__func__, xdr);
  3619. return -EIO;
  3620. }
  3621. static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
  3622. {
  3623. __be32 *p;
  3624. uint64_t sec;
  3625. uint32_t nsec;
  3626. p = xdr_inline_decode(xdr, 12);
  3627. if (unlikely(!p))
  3628. goto out_overflow;
  3629. p = xdr_decode_hyper(p, &sec);
  3630. nsec = be32_to_cpup(p);
  3631. time->tv_sec = (time_t)sec;
  3632. time->tv_nsec = (long)nsec;
  3633. return 0;
  3634. out_overflow:
  3635. print_overflow_msg(__func__, xdr);
  3636. return -EIO;
  3637. }
  3638. static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
  3639. {
  3640. int status = 0;
  3641. time->tv_sec = 0;
  3642. time->tv_nsec = 0;
  3643. if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
  3644. return -EIO;
  3645. if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
  3646. status = decode_attr_time(xdr, time);
  3647. if (status == 0)
  3648. status = NFS_ATTR_FATTR_ATIME;
  3649. bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
  3650. }
  3651. dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
  3652. return status;
  3653. }
  3654. static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
  3655. {
  3656. int status = 0;
  3657. time->tv_sec = 0;
  3658. time->tv_nsec = 0;
  3659. if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
  3660. return -EIO;
  3661. if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
  3662. status = decode_attr_time(xdr, time);
  3663. if (status == 0)
  3664. status = NFS_ATTR_FATTR_CTIME;
  3665. bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
  3666. }
  3667. dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
  3668. return status;
  3669. }
  3670. static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
  3671. struct timespec *time)
  3672. {
  3673. int status = 0;
  3674. time->tv_sec = 0;
  3675. time->tv_nsec = 0;
  3676. if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
  3677. return -EIO;
  3678. if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
  3679. status = decode_attr_time(xdr, time);
  3680. bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
  3681. }
  3682. dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
  3683. (long)time->tv_nsec);
  3684. return status;
  3685. }
  3686. static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
  3687. {
  3688. int status = 0;
  3689. time->tv_sec = 0;
  3690. time->tv_nsec = 0;
  3691. if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
  3692. return -EIO;
  3693. if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
  3694. status = decode_attr_time(xdr, time);
  3695. if (status == 0)
  3696. status = NFS_ATTR_FATTR_MTIME;
  3697. bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
  3698. }
  3699. dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
  3700. return status;
  3701. }
  3702. static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
  3703. {
  3704. unsigned int attrwords = XDR_QUADLEN(attrlen);
  3705. unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
  3706. if (unlikely(attrwords != nwords)) {
  3707. dprintk("%s: server returned incorrect attribute length: "
  3708. "%u %c %u\n",
  3709. __func__,
  3710. attrwords << 2,
  3711. (attrwords < nwords) ? '<' : '>',
  3712. nwords << 2);
  3713. return -EIO;
  3714. }
  3715. return 0;
  3716. }
  3717. static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
  3718. {
  3719. __be32 *p;
  3720. p = xdr_inline_decode(xdr, 20);
  3721. if (unlikely(!p))
  3722. goto out_overflow;
  3723. cinfo->atomic = be32_to_cpup(p++);
  3724. p = xdr_decode_hyper(p, &cinfo->before);
  3725. xdr_decode_hyper(p, &cinfo->after);
  3726. return 0;
  3727. out_overflow:
  3728. print_overflow_msg(__func__, xdr);
  3729. return -EIO;
  3730. }
  3731. static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
  3732. {
  3733. __be32 *p;
  3734. uint32_t supp, acc;
  3735. int status;
  3736. status = decode_op_hdr(xdr, OP_ACCESS);
  3737. if (status)
  3738. return status;
  3739. p = xdr_inline_decode(xdr, 8);
  3740. if (unlikely(!p))
  3741. goto out_overflow;
  3742. supp = be32_to_cpup(p++);
  3743. acc = be32_to_cpup(p);
  3744. *supported = supp;
  3745. *access = acc;
  3746. return 0;
  3747. out_overflow:
  3748. print_overflow_msg(__func__, xdr);
  3749. return -EIO;
  3750. }
  3751. static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
  3752. {
  3753. __be32 *p;
  3754. p = xdr_inline_decode(xdr, len);
  3755. if (likely(p)) {
  3756. memcpy(buf, p, len);
  3757. return 0;
  3758. }
  3759. print_overflow_msg(__func__, xdr);
  3760. return -EIO;
  3761. }
  3762. static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
  3763. {
  3764. return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
  3765. }
  3766. static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
  3767. {
  3768. int status;
  3769. status = decode_op_hdr(xdr, OP_CLOSE);
  3770. if (status != -EIO)
  3771. nfs_increment_open_seqid(status, res->seqid);
  3772. if (!status)
  3773. status = decode_stateid(xdr, &res->stateid);
  3774. return status;
  3775. }
  3776. static int decode_verifier(struct xdr_stream *xdr, void *verifier)
  3777. {
  3778. return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
  3779. }
  3780. static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
  3781. {
  3782. return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
  3783. }
  3784. static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
  3785. {
  3786. int status;
  3787. status = decode_op_hdr(xdr, OP_COMMIT);
  3788. if (!status)
  3789. status = decode_write_verifier(xdr, &res->verf->verifier);
  3790. return status;
  3791. }
  3792. static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
  3793. {
  3794. __be32 *p;
  3795. uint32_t bmlen;
  3796. int status;
  3797. status = decode_op_hdr(xdr, OP_CREATE);
  3798. if (status)
  3799. return status;
  3800. if ((status = decode_change_info(xdr, cinfo)))
  3801. return status;
  3802. p = xdr_inline_decode(xdr, 4);
  3803. if (unlikely(!p))
  3804. goto out_overflow;
  3805. bmlen = be32_to_cpup(p);
  3806. p = xdr_inline_decode(xdr, bmlen << 2);
  3807. if (likely(p))
  3808. return 0;
  3809. out_overflow:
  3810. print_overflow_msg(__func__, xdr);
  3811. return -EIO;
  3812. }
  3813. static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
  3814. {
  3815. unsigned int savep;
  3816. uint32_t attrlen, bitmap[3] = {0};
  3817. int status;
  3818. if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
  3819. goto xdr_error;
  3820. if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
  3821. goto xdr_error;
  3822. if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
  3823. goto xdr_error;
  3824. if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
  3825. goto xdr_error;
  3826. if ((status = decode_attr_fh_expire_type(xdr, bitmap,
  3827. &res->fh_expire_type)) != 0)
  3828. goto xdr_error;
  3829. if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
  3830. goto xdr_error;
  3831. if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
  3832. goto xdr_error;
  3833. if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
  3834. goto xdr_error;
  3835. status = verify_attr_len(xdr, savep, attrlen);
  3836. xdr_error:
  3837. dprintk("%s: xdr returned %d!\n", __func__, -status);
  3838. return status;
  3839. }
  3840. static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
  3841. {
  3842. unsigned int savep;
  3843. uint32_t attrlen, bitmap[3] = {0};
  3844. int status;
  3845. if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
  3846. goto xdr_error;
  3847. if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
  3848. goto xdr_error;
  3849. if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
  3850. goto xdr_error;
  3851. if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
  3852. goto xdr_error;
  3853. if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
  3854. goto xdr_error;
  3855. if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
  3856. goto xdr_error;
  3857. if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
  3858. goto xdr_error;
  3859. if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
  3860. goto xdr_error;
  3861. if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
  3862. goto xdr_error;
  3863. status = verify_attr_len(xdr, savep, attrlen);
  3864. xdr_error:
  3865. dprintk("%s: xdr returned %d!\n", __func__, -status);
  3866. return status;
  3867. }
  3868. static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
  3869. {
  3870. unsigned int savep;
  3871. uint32_t attrlen, bitmap[3] = {0};
  3872. int status;
  3873. if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
  3874. goto xdr_error;
  3875. if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
  3876. goto xdr_error;
  3877. if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
  3878. goto xdr_error;
  3879. if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
  3880. goto xdr_error;
  3881. if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
  3882. goto xdr_error;
  3883. status = verify_attr_len(xdr, savep, attrlen);
  3884. xdr_error:
  3885. dprintk("%s: xdr returned %d!\n", __func__, -status);
  3886. return status;
  3887. }
  3888. static int decode_threshold_hint(struct xdr_stream *xdr,
  3889. uint32_t *bitmap,
  3890. uint64_t *res,
  3891. uint32_t hint_bit)
  3892. {
  3893. __be32 *p;
  3894. *res = 0;
  3895. if (likely(bitmap[0] & hint_bit)) {
  3896. p = xdr_inline_decode(xdr, 8);
  3897. if (unlikely(!p))
  3898. goto out_overflow;
  3899. xdr_decode_hyper(p, res);
  3900. }
  3901. return 0;
  3902. out_overflow:
  3903. print_overflow_msg(__func__, xdr);
  3904. return -EIO;
  3905. }
  3906. static int decode_first_threshold_item4(struct xdr_stream *xdr,
  3907. struct nfs4_threshold *res)
  3908. {
  3909. __be32 *p;
  3910. unsigned int savep;
  3911. uint32_t bitmap[3] = {0,}, attrlen;
  3912. int status;
  3913. /* layout type */
  3914. p = xdr_inline_decode(xdr, 4);
  3915. if (unlikely(!p)) {
  3916. print_overflow_msg(__func__, xdr);
  3917. return -EIO;
  3918. }
  3919. res->l_type = be32_to_cpup(p);
  3920. /* thi_hintset bitmap */
  3921. status = decode_attr_bitmap(xdr, bitmap);
  3922. if (status < 0)
  3923. goto xdr_error;
  3924. /* thi_hintlist length */
  3925. status = decode_attr_length(xdr, &attrlen, &savep);
  3926. if (status < 0)
  3927. goto xdr_error;
  3928. /* thi_hintlist */
  3929. status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
  3930. if (status < 0)
  3931. goto xdr_error;
  3932. status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
  3933. if (status < 0)
  3934. goto xdr_error;
  3935. status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
  3936. THRESHOLD_RD_IO);
  3937. if (status < 0)
  3938. goto xdr_error;
  3939. status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
  3940. THRESHOLD_WR_IO);
  3941. if (status < 0)
  3942. goto xdr_error;
  3943. status = verify_attr_len(xdr, savep, attrlen);
  3944. res->bm = bitmap[0];
  3945. dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
  3946. __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
  3947. res->wr_io_sz);
  3948. xdr_error:
  3949. dprintk("%s ret=%d!\n", __func__, status);
  3950. return status;
  3951. }
  3952. /*
  3953. * Thresholds on pNFS direct I/O vrs MDS I/O
  3954. */
  3955. static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
  3956. uint32_t *bitmap,
  3957. struct nfs4_threshold *res)
  3958. {
  3959. __be32 *p;
  3960. int status = 0;
  3961. uint32_t num;
  3962. if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
  3963. return -EIO;
  3964. if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
  3965. /* Did the server return an unrequested attribute? */
  3966. if (unlikely(res == NULL))
  3967. return -EREMOTEIO;
  3968. p = xdr_inline_decode(xdr, 4);
  3969. if (unlikely(!p))
  3970. goto out_overflow;
  3971. num = be32_to_cpup(p);
  3972. if (num == 0)
  3973. return 0;
  3974. if (num > 1)
  3975. printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
  3976. "drivers per filesystem not supported\n",
  3977. __func__);
  3978. status = decode_first_threshold_item4(xdr, res);
  3979. bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
  3980. }
  3981. return status;
  3982. out_overflow:
  3983. print_overflow_msg(__func__, xdr);
  3984. return -EIO;
  3985. }
  3986. static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
  3987. struct nfs_fattr *fattr, struct nfs_fh *fh,
  3988. struct nfs4_fs_locations *fs_loc,
  3989. const struct nfs_server *server)
  3990. {
  3991. int status;
  3992. umode_t fmode = 0;
  3993. uint32_t type;
  3994. int32_t err;
  3995. status = decode_attr_type(xdr, bitmap, &type);
  3996. if (status < 0)
  3997. goto xdr_error;
  3998. fattr->mode = 0;
  3999. if (status != 0) {
  4000. fattr->mode |= nfs_type2fmt[type];
  4001. fattr->valid |= status;
  4002. }
  4003. status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
  4004. if (status < 0)
  4005. goto xdr_error;
  4006. fattr->valid |= status;
  4007. status = decode_attr_size(xdr, bitmap, &fattr->size);
  4008. if (status < 0)
  4009. goto xdr_error;
  4010. fattr->valid |= status;
  4011. status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
  4012. if (status < 0)
  4013. goto xdr_error;
  4014. fattr->valid |= status;
  4015. err = 0;
  4016. status = decode_attr_error(xdr, bitmap, &err);
  4017. if (status < 0)
  4018. goto xdr_error;
  4019. status = decode_attr_filehandle(xdr, bitmap, fh);
  4020. if (status < 0)
  4021. goto xdr_error;
  4022. status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
  4023. if (status < 0)
  4024. goto xdr_error;
  4025. fattr->valid |= status;
  4026. status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
  4027. if (status < 0)
  4028. goto xdr_error;
  4029. fattr->valid |= status;
  4030. status = decode_attr_mode(xdr, bitmap, &fmode);
  4031. if (status < 0)
  4032. goto xdr_error;
  4033. if (status != 0) {
  4034. fattr->mode |= fmode;
  4035. fattr->valid |= status;
  4036. }
  4037. status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
  4038. if (status < 0)
  4039. goto xdr_error;
  4040. fattr->valid |= status;
  4041. status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
  4042. if (status < 0)
  4043. goto xdr_error;
  4044. fattr->valid |= status;
  4045. status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
  4046. if (status < 0)
  4047. goto xdr_error;
  4048. fattr->valid |= status;
  4049. status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
  4050. if (status < 0)
  4051. goto xdr_error;
  4052. fattr->valid |= status;
  4053. status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
  4054. if (status < 0)
  4055. goto xdr_error;
  4056. fattr->valid |= status;
  4057. status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
  4058. if (status < 0)
  4059. goto xdr_error;
  4060. fattr->valid |= status;
  4061. status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
  4062. if (status < 0)
  4063. goto xdr_error;
  4064. fattr->valid |= status;
  4065. status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
  4066. if (status < 0)
  4067. goto xdr_error;
  4068. fattr->valid |= status;
  4069. status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
  4070. if (status < 0)
  4071. goto xdr_error;
  4072. fattr->valid |= status;
  4073. status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
  4074. if (status < 0)
  4075. goto xdr_error;
  4076. xdr_error:
  4077. dprintk("%s: xdr returned %d\n", __func__, -status);
  4078. return status;
  4079. }
  4080. static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
  4081. struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
  4082. const struct nfs_server *server)
  4083. {
  4084. unsigned int savep;
  4085. uint32_t attrlen,
  4086. bitmap[3] = {0};
  4087. int status;
  4088. status = decode_op_hdr(xdr, OP_GETATTR);
  4089. if (status < 0)
  4090. goto xdr_error;
  4091. status = decode_attr_bitmap(xdr, bitmap);
  4092. if (status < 0)
  4093. goto xdr_error;
  4094. status = decode_attr_length(xdr, &attrlen, &savep);
  4095. if (status < 0)
  4096. goto xdr_error;
  4097. status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
  4098. if (status < 0)
  4099. goto xdr_error;
  4100. status = verify_attr_len(xdr, savep, attrlen);
  4101. xdr_error:
  4102. dprintk("%s: xdr returned %d\n", __func__, -status);
  4103. return status;
  4104. }
  4105. static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
  4106. const struct nfs_server *server)
  4107. {
  4108. return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
  4109. }
  4110. /*
  4111. * Decode potentially multiple layout types. Currently we only support
  4112. * one layout driver per file system.
  4113. */
  4114. static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
  4115. uint32_t *layouttype)
  4116. {
  4117. uint32_t *p;
  4118. int num;
  4119. p = xdr_inline_decode(xdr, 4);
  4120. if (unlikely(!p))
  4121. goto out_overflow;
  4122. num = be32_to_cpup(p);
  4123. /* pNFS is not supported by the underlying file system */
  4124. if (num == 0) {
  4125. *layouttype = 0;
  4126. return 0;
  4127. }
  4128. if (num > 1)
  4129. printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
  4130. "drivers per filesystem not supported\n", __func__);
  4131. /* Decode and set first layout type, move xdr->p past unused types */
  4132. p = xdr_inline_decode(xdr, num * 4);
  4133. if (unlikely(!p))
  4134. goto out_overflow;
  4135. *layouttype = be32_to_cpup(p);
  4136. return 0;
  4137. out_overflow:
  4138. print_overflow_msg(__func__, xdr);
  4139. return -EIO;
  4140. }
  4141. /*
  4142. * The type of file system exported.
  4143. * Note we must ensure that layouttype is set in any non-error case.
  4144. */
  4145. static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
  4146. uint32_t *layouttype)
  4147. {
  4148. int status = 0;
  4149. dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
  4150. if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
  4151. return -EIO;
  4152. if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
  4153. status = decode_first_pnfs_layout_type(xdr, layouttype);
  4154. bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
  4155. } else
  4156. *layouttype = 0;
  4157. return status;
  4158. }
  4159. /*
  4160. * The prefered block size for layout directed io
  4161. */
  4162. static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
  4163. uint32_t *res)
  4164. {
  4165. __be32 *p;
  4166. dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
  4167. *res = 0;
  4168. if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
  4169. p = xdr_inline_decode(xdr, 4);
  4170. if (unlikely(!p)) {
  4171. print_overflow_msg(__func__, xdr);
  4172. return -EIO;
  4173. }
  4174. *res = be32_to_cpup(p);
  4175. bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
  4176. }
  4177. return 0;
  4178. }
  4179. static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
  4180. {
  4181. unsigned int savep;
  4182. uint32_t attrlen, bitmap[3];
  4183. int status;
  4184. if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
  4185. goto xdr_error;
  4186. if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
  4187. goto xdr_error;
  4188. if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
  4189. goto xdr_error;
  4190. fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
  4191. if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
  4192. goto xdr_error;
  4193. if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
  4194. goto xdr_error;
  4195. if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
  4196. goto xdr_error;
  4197. fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
  4198. if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
  4199. goto xdr_error;
  4200. fsinfo->wtpref = fsinfo->wtmax;
  4201. status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
  4202. if (status != 0)
  4203. goto xdr_error;
  4204. status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
  4205. if (status != 0)
  4206. goto xdr_error;
  4207. status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
  4208. if (status)
  4209. goto xdr_error;
  4210. status = verify_attr_len(xdr, savep, attrlen);
  4211. xdr_error:
  4212. dprintk("%s: xdr returned %d!\n", __func__, -status);
  4213. return status;
  4214. }
  4215. static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
  4216. {
  4217. __be32 *p;
  4218. uint32_t len;
  4219. int status;
  4220. /* Zero handle first to allow comparisons */
  4221. memset(fh, 0, sizeof(*fh));
  4222. status = decode_op_hdr(xdr, OP_GETFH);
  4223. if (status)
  4224. return status;
  4225. p = xdr_inline_decode(xdr, 4);
  4226. if (unlikely(!p))
  4227. goto out_overflow;
  4228. len = be32_to_cpup(p);
  4229. if (len > NFS4_FHSIZE)
  4230. return -EIO;
  4231. fh->size = len;
  4232. p = xdr_inline_decode(xdr, len);
  4233. if (unlikely(!p))
  4234. goto out_overflow;
  4235. memcpy(fh->data, p, len);
  4236. return 0;
  4237. out_overflow:
  4238. print_overflow_msg(__func__, xdr);
  4239. return -EIO;
  4240. }
  4241. static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
  4242. {
  4243. int status;
  4244. status = decode_op_hdr(xdr, OP_LINK);
  4245. if (status)
  4246. return status;
  4247. return decode_change_info(xdr, cinfo);
  4248. }
  4249. /*
  4250. * We create the owner, so we know a proper owner.id length is 4.
  4251. */
  4252. static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
  4253. {
  4254. uint64_t offset, length, clientid;
  4255. __be32 *p;
  4256. uint32_t namelen, type;
  4257. p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
  4258. if (unlikely(!p))
  4259. goto out_overflow;
  4260. p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
  4261. p = xdr_decode_hyper(p, &length);
  4262. type = be32_to_cpup(p++); /* 4 byte read */
  4263. if (fl != NULL) { /* manipulate file lock */
  4264. fl->fl_start = (loff_t)offset;
  4265. fl->fl_end = fl->fl_start + (loff_t)length - 1;
  4266. if (length == ~(uint64_t)0)
  4267. fl->fl_end = OFFSET_MAX;
  4268. fl->fl_type = F_WRLCK;
  4269. if (type & 1)
  4270. fl->fl_type = F_RDLCK;
  4271. fl->fl_pid = 0;
  4272. }
  4273. p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
  4274. namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
  4275. p = xdr_inline_decode(xdr, namelen); /* variable size field */
  4276. if (likely(p))
  4277. return -NFS4ERR_DENIED;
  4278. out_overflow:
  4279. print_overflow_msg(__func__, xdr);
  4280. return -EIO;
  4281. }
  4282. static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
  4283. {
  4284. int status;
  4285. status = decode_op_hdr(xdr, OP_LOCK);
  4286. if (status == -EIO)
  4287. goto out;
  4288. if (status == 0) {
  4289. status = decode_stateid(xdr, &res->stateid);
  4290. if (unlikely(status))
  4291. goto out;
  4292. } else if (status == -NFS4ERR_DENIED)
  4293. status = decode_lock_denied(xdr, NULL);
  4294. if (res->open_seqid != NULL)
  4295. nfs_increment_open_seqid(status, res->open_seqid);
  4296. nfs_increment_lock_seqid(status, res->lock_seqid);
  4297. out:
  4298. return status;
  4299. }
  4300. static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
  4301. {
  4302. int status;
  4303. status = decode_op_hdr(xdr, OP_LOCKT);
  4304. if (status == -NFS4ERR_DENIED)
  4305. return decode_lock_denied(xdr, res->denied);
  4306. return status;
  4307. }
  4308. static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
  4309. {
  4310. int status;
  4311. status = decode_op_hdr(xdr, OP_LOCKU);
  4312. if (status != -EIO)
  4313. nfs_increment_lock_seqid(status, res->seqid);
  4314. if (status == 0)
  4315. status = decode_stateid(xdr, &res->stateid);
  4316. return status;
  4317. }
  4318. static int decode_release_lockowner(struct xdr_stream *xdr)
  4319. {
  4320. return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
  4321. }
  4322. static int decode_lookup(struct xdr_stream *xdr)
  4323. {
  4324. return decode_op_hdr(xdr, OP_LOOKUP);
  4325. }
  4326. /* This is too sick! */
  4327. static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
  4328. {
  4329. __be32 *p;
  4330. uint32_t limit_type, nblocks, blocksize;
  4331. p = xdr_inline_decode(xdr, 12);
  4332. if (unlikely(!p))
  4333. goto out_overflow;
  4334. limit_type = be32_to_cpup(p++);
  4335. switch (limit_type) {
  4336. case 1:
  4337. xdr_decode_hyper(p, maxsize);
  4338. break;
  4339. case 2:
  4340. nblocks = be32_to_cpup(p++);
  4341. blocksize = be32_to_cpup(p);
  4342. *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
  4343. }
  4344. return 0;
  4345. out_overflow:
  4346. print_overflow_msg(__func__, xdr);
  4347. return -EIO;
  4348. }
  4349. static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
  4350. {
  4351. __be32 *p;
  4352. uint32_t delegation_type;
  4353. int status;
  4354. p = xdr_inline_decode(xdr, 4);
  4355. if (unlikely(!p))
  4356. goto out_overflow;
  4357. delegation_type = be32_to_cpup(p);
  4358. if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
  4359. res->delegation_type = 0;
  4360. return 0;
  4361. }
  4362. status = decode_stateid(xdr, &res->delegation);
  4363. if (unlikely(status))
  4364. return status;
  4365. p = xdr_inline_decode(xdr, 4);
  4366. if (unlikely(!p))
  4367. goto out_overflow;
  4368. res->do_recall = be32_to_cpup(p);
  4369. switch (delegation_type) {
  4370. case NFS4_OPEN_DELEGATE_READ:
  4371. res->delegation_type = FMODE_READ;
  4372. break;
  4373. case NFS4_OPEN_DELEGATE_WRITE:
  4374. res->delegation_type = FMODE_WRITE|FMODE_READ;
  4375. if (decode_space_limit(xdr, &res->maxsize) < 0)
  4376. return -EIO;
  4377. }
  4378. return decode_ace(xdr, NULL, res->server->nfs_client);
  4379. out_overflow:
  4380. print_overflow_msg(__func__, xdr);
  4381. return -EIO;
  4382. }
  4383. static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
  4384. {
  4385. __be32 *p;
  4386. uint32_t savewords, bmlen, i;
  4387. int status;
  4388. status = decode_op_hdr(xdr, OP_OPEN);
  4389. if (status != -EIO)
  4390. nfs_increment_open_seqid(status, res->seqid);
  4391. if (!status)
  4392. status = decode_stateid(xdr, &res->stateid);
  4393. if (unlikely(status))
  4394. return status;
  4395. decode_change_info(xdr, &res->cinfo);
  4396. p = xdr_inline_decode(xdr, 8);
  4397. if (unlikely(!p))
  4398. goto out_overflow;
  4399. res->rflags = be32_to_cpup(p++);
  4400. bmlen = be32_to_cpup(p);
  4401. if (bmlen > 10)
  4402. goto xdr_error;
  4403. p = xdr_inline_decode(xdr, bmlen << 2);
  4404. if (unlikely(!p))
  4405. goto out_overflow;
  4406. savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
  4407. for (i = 0; i < savewords; ++i)
  4408. res->attrset[i] = be32_to_cpup(p++);
  4409. for (; i < NFS4_BITMAP_SIZE; i++)
  4410. res->attrset[i] = 0;
  4411. return decode_delegation(xdr, res);
  4412. xdr_error:
  4413. dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
  4414. return -EIO;
  4415. out_overflow:
  4416. print_overflow_msg(__func__, xdr);
  4417. return -EIO;
  4418. }
  4419. static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
  4420. {
  4421. int status;
  4422. status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
  4423. if (status != -EIO)
  4424. nfs_increment_open_seqid(status, res->seqid);
  4425. if (!status)
  4426. status = decode_stateid(xdr, &res->stateid);
  4427. return status;
  4428. }
  4429. static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
  4430. {
  4431. int status;
  4432. status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
  4433. if (status != -EIO)
  4434. nfs_increment_open_seqid(status, res->seqid);
  4435. if (!status)
  4436. status = decode_stateid(xdr, &res->stateid);
  4437. return status;
  4438. }
  4439. static int decode_putfh(struct xdr_stream *xdr)
  4440. {
  4441. return decode_op_hdr(xdr, OP_PUTFH);
  4442. }
  4443. static int decode_putrootfh(struct xdr_stream *xdr)
  4444. {
  4445. return decode_op_hdr(xdr, OP_PUTROOTFH);
  4446. }
  4447. static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
  4448. {
  4449. __be32 *p;
  4450. uint32_t count, eof, recvd;
  4451. int status;
  4452. status = decode_op_hdr(xdr, OP_READ);
  4453. if (status)
  4454. return status;
  4455. p = xdr_inline_decode(xdr, 8);
  4456. if (unlikely(!p))
  4457. goto out_overflow;
  4458. eof = be32_to_cpup(p++);
  4459. count = be32_to_cpup(p);
  4460. recvd = xdr_read_pages(xdr, count);
  4461. if (count > recvd) {
  4462. dprintk("NFS: server cheating in read reply: "
  4463. "count %u > recvd %u\n", count, recvd);
  4464. count = recvd;
  4465. eof = 0;
  4466. }
  4467. res->eof = eof;
  4468. res->count = count;
  4469. return 0;
  4470. out_overflow:
  4471. print_overflow_msg(__func__, xdr);
  4472. return -EIO;
  4473. }
  4474. static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
  4475. {
  4476. int status;
  4477. __be32 verf[2];
  4478. status = decode_op_hdr(xdr, OP_READDIR);
  4479. if (!status)
  4480. status = decode_verifier(xdr, readdir->verifier.data);
  4481. if (unlikely(status))
  4482. return status;
  4483. memcpy(verf, readdir->verifier.data, sizeof(verf));
  4484. dprintk("%s: verifier = %08x:%08x\n",
  4485. __func__, verf[0], verf[1]);
  4486. return xdr_read_pages(xdr, xdr->buf->page_len);
  4487. }
  4488. static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
  4489. {
  4490. struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
  4491. u32 len, recvd;
  4492. __be32 *p;
  4493. int status;
  4494. status = decode_op_hdr(xdr, OP_READLINK);
  4495. if (status)
  4496. return status;
  4497. /* Convert length of symlink */
  4498. p = xdr_inline_decode(xdr, 4);
  4499. if (unlikely(!p))
  4500. goto out_overflow;
  4501. len = be32_to_cpup(p);
  4502. if (len >= rcvbuf->page_len || len <= 0) {
  4503. dprintk("nfs: server returned giant symlink!\n");
  4504. return -ENAMETOOLONG;
  4505. }
  4506. recvd = xdr_read_pages(xdr, len);
  4507. if (recvd < len) {
  4508. dprintk("NFS: server cheating in readlink reply: "
  4509. "count %u > recvd %u\n", len, recvd);
  4510. return -EIO;
  4511. }
  4512. /*
  4513. * The XDR encode routine has set things up so that
  4514. * the link text will be copied directly into the
  4515. * buffer. We just have to do overflow-checking,
  4516. * and and null-terminate the text (the VFS expects
  4517. * null-termination).
  4518. */
  4519. xdr_terminate_string(rcvbuf, len);
  4520. return 0;
  4521. out_overflow:
  4522. print_overflow_msg(__func__, xdr);
  4523. return -EIO;
  4524. }
  4525. static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
  4526. {
  4527. int status;
  4528. status = decode_op_hdr(xdr, OP_REMOVE);
  4529. if (status)
  4530. goto out;
  4531. status = decode_change_info(xdr, cinfo);
  4532. out:
  4533. return status;
  4534. }
  4535. static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
  4536. struct nfs4_change_info *new_cinfo)
  4537. {
  4538. int status;
  4539. status = decode_op_hdr(xdr, OP_RENAME);
  4540. if (status)
  4541. goto out;
  4542. if ((status = decode_change_info(xdr, old_cinfo)))
  4543. goto out;
  4544. status = decode_change_info(xdr, new_cinfo);
  4545. out:
  4546. return status;
  4547. }
  4548. static int decode_renew(struct xdr_stream *xdr)
  4549. {
  4550. return decode_op_hdr(xdr, OP_RENEW);
  4551. }
  4552. static int
  4553. decode_restorefh(struct xdr_stream *xdr)
  4554. {
  4555. return decode_op_hdr(xdr, OP_RESTOREFH);
  4556. }
  4557. static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
  4558. struct nfs_getaclres *res)
  4559. {
  4560. unsigned int savep;
  4561. uint32_t attrlen,
  4562. bitmap[3] = {0};
  4563. int status;
  4564. unsigned int pg_offset;
  4565. res->acl_len = 0;
  4566. if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
  4567. goto out;
  4568. xdr_enter_page(xdr, xdr->buf->page_len);
  4569. /* Calculate the offset of the page data */
  4570. pg_offset = xdr->buf->head[0].iov_len;
  4571. if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
  4572. goto out;
  4573. if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
  4574. goto out;
  4575. if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
  4576. return -EIO;
  4577. if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
  4578. /* The bitmap (xdr len + bitmaps) and the attr xdr len words
  4579. * are stored with the acl data to handle the problem of
  4580. * variable length bitmaps.*/
  4581. res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
  4582. res->acl_len = attrlen;
  4583. /* Check for receive buffer overflow */
  4584. if (res->acl_len > (xdr->nwords << 2) ||
  4585. res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
  4586. res->acl_flags |= NFS4_ACL_TRUNC;
  4587. dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
  4588. attrlen, xdr->nwords << 2);
  4589. }
  4590. } else
  4591. status = -EOPNOTSUPP;
  4592. out:
  4593. return status;
  4594. }
  4595. static int
  4596. decode_savefh(struct xdr_stream *xdr)
  4597. {
  4598. return decode_op_hdr(xdr, OP_SAVEFH);
  4599. }
  4600. static int decode_setattr(struct xdr_stream *xdr)
  4601. {
  4602. __be32 *p;
  4603. uint32_t bmlen;
  4604. int status;
  4605. status = decode_op_hdr(xdr, OP_SETATTR);
  4606. if (status)
  4607. return status;
  4608. p = xdr_inline_decode(xdr, 4);
  4609. if (unlikely(!p))
  4610. goto out_overflow;
  4611. bmlen = be32_to_cpup(p);
  4612. p = xdr_inline_decode(xdr, bmlen << 2);
  4613. if (likely(p))
  4614. return 0;
  4615. out_overflow:
  4616. print_overflow_msg(__func__, xdr);
  4617. return -EIO;
  4618. }
  4619. static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
  4620. {
  4621. __be32 *p;
  4622. uint32_t opnum;
  4623. int32_t nfserr;
  4624. p = xdr_inline_decode(xdr, 8);
  4625. if (unlikely(!p))
  4626. goto out_overflow;
  4627. opnum = be32_to_cpup(p++);
  4628. if (opnum != OP_SETCLIENTID) {
  4629. dprintk("nfs: decode_setclientid: Server returned operation"
  4630. " %d\n", opnum);
  4631. return -EIO;
  4632. }
  4633. nfserr = be32_to_cpup(p);
  4634. if (nfserr == NFS_OK) {
  4635. p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
  4636. if (unlikely(!p))
  4637. goto out_overflow;
  4638. p = xdr_decode_hyper(p, &res->clientid);
  4639. memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
  4640. } else if (nfserr == NFSERR_CLID_INUSE) {
  4641. uint32_t len;
  4642. /* skip netid string */
  4643. p = xdr_inline_decode(xdr, 4);
  4644. if (unlikely(!p))
  4645. goto out_overflow;
  4646. len = be32_to_cpup(p);
  4647. p = xdr_inline_decode(xdr, len);
  4648. if (unlikely(!p))
  4649. goto out_overflow;
  4650. /* skip uaddr string */
  4651. p = xdr_inline_decode(xdr, 4);
  4652. if (unlikely(!p))
  4653. goto out_overflow;
  4654. len = be32_to_cpup(p);
  4655. p = xdr_inline_decode(xdr, len);
  4656. if (unlikely(!p))
  4657. goto out_overflow;
  4658. return -NFSERR_CLID_INUSE;
  4659. } else
  4660. return nfs4_stat_to_errno(nfserr);
  4661. return 0;
  4662. out_overflow:
  4663. print_overflow_msg(__func__, xdr);
  4664. return -EIO;
  4665. }
  4666. static int decode_setclientid_confirm(struct xdr_stream *xdr)
  4667. {
  4668. return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
  4669. }
  4670. static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
  4671. {
  4672. __be32 *p;
  4673. int status;
  4674. status = decode_op_hdr(xdr, OP_WRITE);
  4675. if (status)
  4676. return status;
  4677. p = xdr_inline_decode(xdr, 8);
  4678. if (unlikely(!p))
  4679. goto out_overflow;
  4680. res->count = be32_to_cpup(p++);
  4681. res->verf->committed = be32_to_cpup(p++);
  4682. return decode_write_verifier(xdr, &res->verf->verifier);
  4683. out_overflow:
  4684. print_overflow_msg(__func__, xdr);
  4685. return -EIO;
  4686. }
  4687. static int decode_delegreturn(struct xdr_stream *xdr)
  4688. {
  4689. return decode_op_hdr(xdr, OP_DELEGRETURN);
  4690. }
  4691. static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
  4692. {
  4693. __be32 *p;
  4694. p = xdr_inline_decode(xdr, 4);
  4695. if (unlikely(!p))
  4696. goto out_overflow;
  4697. flavor->gss.sec_oid4.len = be32_to_cpup(p);
  4698. if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
  4699. goto out_err;
  4700. p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
  4701. if (unlikely(!p))
  4702. goto out_overflow;
  4703. memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
  4704. p = xdr_inline_decode(xdr, 8);
  4705. if (unlikely(!p))
  4706. goto out_overflow;
  4707. flavor->gss.qop4 = be32_to_cpup(p++);
  4708. flavor->gss.service = be32_to_cpup(p);
  4709. return 0;
  4710. out_overflow:
  4711. print_overflow_msg(__func__, xdr);
  4712. return -EIO;
  4713. out_err:
  4714. return -EINVAL;
  4715. }
  4716. static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
  4717. {
  4718. struct nfs4_secinfo_flavor *sec_flavor;
  4719. int status;
  4720. __be32 *p;
  4721. int i, num_flavors;
  4722. p = xdr_inline_decode(xdr, 4);
  4723. if (unlikely(!p))
  4724. goto out_overflow;
  4725. res->flavors->num_flavors = 0;
  4726. num_flavors = be32_to_cpup(p);
  4727. for (i = 0; i < num_flavors; i++) {
  4728. sec_flavor = &res->flavors->flavors[i];
  4729. if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
  4730. break;
  4731. p = xdr_inline_decode(xdr, 4);
  4732. if (unlikely(!p))
  4733. goto out_overflow;
  4734. sec_flavor->flavor = be32_to_cpup(p);
  4735. if (sec_flavor->flavor == RPC_AUTH_GSS) {
  4736. status = decode_secinfo_gss(xdr, sec_flavor);
  4737. if (status)
  4738. goto out;
  4739. }
  4740. res->flavors->num_flavors++;
  4741. }
  4742. status = 0;
  4743. out:
  4744. return status;
  4745. out_overflow:
  4746. print_overflow_msg(__func__, xdr);
  4747. return -EIO;
  4748. }
  4749. static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
  4750. {
  4751. int status = decode_op_hdr(xdr, OP_SECINFO);
  4752. if (status)
  4753. return status;
  4754. return decode_secinfo_common(xdr, res);
  4755. }
  4756. #if defined(CONFIG_NFS_V4_1)
  4757. static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
  4758. {
  4759. int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
  4760. if (status)
  4761. return status;
  4762. return decode_secinfo_common(xdr, res);
  4763. }
  4764. static int decode_exchange_id(struct xdr_stream *xdr,
  4765. struct nfs41_exchange_id_res *res)
  4766. {
  4767. __be32 *p;
  4768. uint32_t dummy;
  4769. char *dummy_str;
  4770. int status;
  4771. uint32_t impl_id_count;
  4772. status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
  4773. if (status)
  4774. return status;
  4775. p = xdr_inline_decode(xdr, 8);
  4776. if (unlikely(!p))
  4777. goto out_overflow;
  4778. xdr_decode_hyper(p, &res->clientid);
  4779. p = xdr_inline_decode(xdr, 12);
  4780. if (unlikely(!p))
  4781. goto out_overflow;
  4782. res->seqid = be32_to_cpup(p++);
  4783. res->flags = be32_to_cpup(p++);
  4784. /* We ask for SP4_NONE */
  4785. dummy = be32_to_cpup(p);
  4786. if (dummy != SP4_NONE)
  4787. return -EIO;
  4788. /* server_owner4.so_minor_id */
  4789. p = xdr_inline_decode(xdr, 8);
  4790. if (unlikely(!p))
  4791. goto out_overflow;
  4792. p = xdr_decode_hyper(p, &res->server_owner->minor_id);
  4793. /* server_owner4.so_major_id */
  4794. status = decode_opaque_inline(xdr, &dummy, &dummy_str);
  4795. if (unlikely(status))
  4796. return status;
  4797. if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
  4798. return -EIO;
  4799. memcpy(res->server_owner->major_id, dummy_str, dummy);
  4800. res->server_owner->major_id_sz = dummy;
  4801. /* server_scope4 */
  4802. status = decode_opaque_inline(xdr, &dummy, &dummy_str);
  4803. if (unlikely(status))
  4804. return status;
  4805. if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
  4806. return -EIO;
  4807. memcpy(res->server_scope->server_scope, dummy_str, dummy);
  4808. res->server_scope->server_scope_sz = dummy;
  4809. /* Implementation Id */
  4810. p = xdr_inline_decode(xdr, 4);
  4811. if (unlikely(!p))
  4812. goto out_overflow;
  4813. impl_id_count = be32_to_cpup(p++);
  4814. if (impl_id_count) {
  4815. /* nii_domain */
  4816. status = decode_opaque_inline(xdr, &dummy, &dummy_str);
  4817. if (unlikely(status))
  4818. return status;
  4819. if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
  4820. return -EIO;
  4821. memcpy(res->impl_id->domain, dummy_str, dummy);
  4822. /* nii_name */
  4823. status = decode_opaque_inline(xdr, &dummy, &dummy_str);
  4824. if (unlikely(status))
  4825. return status;
  4826. if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
  4827. return -EIO;
  4828. memcpy(res->impl_id->name, dummy_str, dummy);
  4829. /* nii_date */
  4830. p = xdr_inline_decode(xdr, 12);
  4831. if (unlikely(!p))
  4832. goto out_overflow;
  4833. p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
  4834. res->impl_id->date.nseconds = be32_to_cpup(p);
  4835. /* if there's more than one entry, ignore the rest */
  4836. }
  4837. return 0;
  4838. out_overflow:
  4839. print_overflow_msg(__func__, xdr);
  4840. return -EIO;
  4841. }
  4842. static int decode_chan_attrs(struct xdr_stream *xdr,
  4843. struct nfs4_channel_attrs *attrs)
  4844. {
  4845. __be32 *p;
  4846. u32 nr_attrs, val;
  4847. p = xdr_inline_decode(xdr, 28);
  4848. if (unlikely(!p))
  4849. goto out_overflow;
  4850. val = be32_to_cpup(p++); /* headerpadsz */
  4851. if (val)
  4852. return -EINVAL; /* no support for header padding yet */
  4853. attrs->max_rqst_sz = be32_to_cpup(p++);
  4854. attrs->max_resp_sz = be32_to_cpup(p++);
  4855. attrs->max_resp_sz_cached = be32_to_cpup(p++);
  4856. attrs->max_ops = be32_to_cpup(p++);
  4857. attrs->max_reqs = be32_to_cpup(p++);
  4858. nr_attrs = be32_to_cpup(p);
  4859. if (unlikely(nr_attrs > 1)) {
  4860. printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
  4861. "count %u\n", __func__, nr_attrs);
  4862. return -EINVAL;
  4863. }
  4864. if (nr_attrs == 1) {
  4865. p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
  4866. if (unlikely(!p))
  4867. goto out_overflow;
  4868. }
  4869. return 0;
  4870. out_overflow:
  4871. print_overflow_msg(__func__, xdr);
  4872. return -EIO;
  4873. }
  4874. static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
  4875. {
  4876. return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
  4877. }
  4878. static int decode_bind_conn_to_session(struct xdr_stream *xdr,
  4879. struct nfs41_bind_conn_to_session_res *res)
  4880. {
  4881. __be32 *p;
  4882. int status;
  4883. status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
  4884. if (!status)
  4885. status = decode_sessionid(xdr, &res->session->sess_id);
  4886. if (unlikely(status))
  4887. return status;
  4888. /* dir flags, rdma mode bool */
  4889. p = xdr_inline_decode(xdr, 8);
  4890. if (unlikely(!p))
  4891. goto out_overflow;
  4892. res->dir = be32_to_cpup(p++);
  4893. if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
  4894. return -EIO;
  4895. if (be32_to_cpup(p) == 0)
  4896. res->use_conn_in_rdma_mode = false;
  4897. else
  4898. res->use_conn_in_rdma_mode = true;
  4899. return 0;
  4900. out_overflow:
  4901. print_overflow_msg(__func__, xdr);
  4902. return -EIO;
  4903. }
  4904. static int decode_create_session(struct xdr_stream *xdr,
  4905. struct nfs41_create_session_res *res)
  4906. {
  4907. __be32 *p;
  4908. int status;
  4909. struct nfs_client *clp = res->client;
  4910. struct nfs4_session *session = clp->cl_session;
  4911. status = decode_op_hdr(xdr, OP_CREATE_SESSION);
  4912. if (!status)
  4913. status = decode_sessionid(xdr, &session->sess_id);
  4914. if (unlikely(status))
  4915. return status;
  4916. /* seqid, flags */
  4917. p = xdr_inline_decode(xdr, 8);
  4918. if (unlikely(!p))
  4919. goto out_overflow;
  4920. clp->cl_seqid = be32_to_cpup(p++);
  4921. session->flags = be32_to_cpup(p);
  4922. /* Channel attributes */
  4923. status = decode_chan_attrs(xdr, &session->fc_attrs);
  4924. if (!status)
  4925. status = decode_chan_attrs(xdr, &session->bc_attrs);
  4926. return status;
  4927. out_overflow:
  4928. print_overflow_msg(__func__, xdr);
  4929. return -EIO;
  4930. }
  4931. static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
  4932. {
  4933. return decode_op_hdr(xdr, OP_DESTROY_SESSION);
  4934. }
  4935. static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
  4936. {
  4937. return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
  4938. }
  4939. static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
  4940. {
  4941. return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
  4942. }
  4943. #endif /* CONFIG_NFS_V4_1 */
  4944. static int decode_sequence(struct xdr_stream *xdr,
  4945. struct nfs4_sequence_res *res,
  4946. struct rpc_rqst *rqstp)
  4947. {
  4948. #if defined(CONFIG_NFS_V4_1)
  4949. struct nfs4_session *session;
  4950. struct nfs4_sessionid id;
  4951. u32 dummy;
  4952. int status;
  4953. __be32 *p;
  4954. if (res->sr_slot == NULL)
  4955. return 0;
  4956. status = decode_op_hdr(xdr, OP_SEQUENCE);
  4957. if (!status)
  4958. status = decode_sessionid(xdr, &id);
  4959. if (unlikely(status))
  4960. goto out_err;
  4961. /*
  4962. * If the server returns different values for sessionID, slotID or
  4963. * sequence number, the server is looney tunes.
  4964. */
  4965. status = -EREMOTEIO;
  4966. session = res->sr_slot->table->session;
  4967. if (memcmp(id.data, session->sess_id.data,
  4968. NFS4_MAX_SESSIONID_LEN)) {
  4969. dprintk("%s Invalid session id\n", __func__);
  4970. goto out_err;
  4971. }
  4972. p = xdr_inline_decode(xdr, 20);
  4973. if (unlikely(!p))
  4974. goto out_overflow;
  4975. /* seqid */
  4976. dummy = be32_to_cpup(p++);
  4977. if (dummy != res->sr_slot->seq_nr) {
  4978. dprintk("%s Invalid sequence number\n", __func__);
  4979. goto out_err;
  4980. }
  4981. /* slot id */
  4982. dummy = be32_to_cpup(p++);
  4983. if (dummy != res->sr_slot->slot_nr) {
  4984. dprintk("%s Invalid slot id\n", __func__);
  4985. goto out_err;
  4986. }
  4987. /* highest slot id */
  4988. res->sr_highest_slotid = be32_to_cpup(p++);
  4989. /* target highest slot id */
  4990. res->sr_target_highest_slotid = be32_to_cpup(p++);
  4991. /* result flags */
  4992. res->sr_status_flags = be32_to_cpup(p);
  4993. status = 0;
  4994. out_err:
  4995. res->sr_status = status;
  4996. return status;
  4997. out_overflow:
  4998. print_overflow_msg(__func__, xdr);
  4999. status = -EIO;
  5000. goto out_err;
  5001. #else /* CONFIG_NFS_V4_1 */
  5002. return 0;
  5003. #endif /* CONFIG_NFS_V4_1 */
  5004. }
  5005. #if defined(CONFIG_NFS_V4_1)
  5006. /*
  5007. * TODO: Need to handle case when EOF != true;
  5008. */
  5009. static int decode_getdevicelist(struct xdr_stream *xdr,
  5010. struct pnfs_devicelist *res)
  5011. {
  5012. __be32 *p;
  5013. int status, i;
  5014. nfs4_verifier verftemp;
  5015. status = decode_op_hdr(xdr, OP_GETDEVICELIST);
  5016. if (status)
  5017. return status;
  5018. p = xdr_inline_decode(xdr, 8 + 8 + 4);
  5019. if (unlikely(!p))
  5020. goto out_overflow;
  5021. /* TODO: Skip cookie for now */
  5022. p += 2;
  5023. /* Read verifier */
  5024. p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE);
  5025. res->num_devs = be32_to_cpup(p);
  5026. dprintk("%s: num_dev %d\n", __func__, res->num_devs);
  5027. if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
  5028. printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
  5029. __func__, res->num_devs);
  5030. return -EIO;
  5031. }
  5032. p = xdr_inline_decode(xdr,
  5033. res->num_devs * NFS4_DEVICEID4_SIZE + 4);
  5034. if (unlikely(!p))
  5035. goto out_overflow;
  5036. for (i = 0; i < res->num_devs; i++)
  5037. p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
  5038. NFS4_DEVICEID4_SIZE);
  5039. res->eof = be32_to_cpup(p);
  5040. return 0;
  5041. out_overflow:
  5042. print_overflow_msg(__func__, xdr);
  5043. return -EIO;
  5044. }
  5045. static int decode_getdeviceinfo(struct xdr_stream *xdr,
  5046. struct pnfs_device *pdev)
  5047. {
  5048. __be32 *p;
  5049. uint32_t len, type;
  5050. int status;
  5051. status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
  5052. if (status) {
  5053. if (status == -ETOOSMALL) {
  5054. p = xdr_inline_decode(xdr, 4);
  5055. if (unlikely(!p))
  5056. goto out_overflow;
  5057. pdev->mincount = be32_to_cpup(p);
  5058. dprintk("%s: Min count too small. mincnt = %u\n",
  5059. __func__, pdev->mincount);
  5060. }
  5061. return status;
  5062. }
  5063. p = xdr_inline_decode(xdr, 8);
  5064. if (unlikely(!p))
  5065. goto out_overflow;
  5066. type = be32_to_cpup(p++);
  5067. if (type != pdev->layout_type) {
  5068. dprintk("%s: layout mismatch req: %u pdev: %u\n",
  5069. __func__, pdev->layout_type, type);
  5070. return -EINVAL;
  5071. }
  5072. /*
  5073. * Get the length of the opaque device_addr4. xdr_read_pages places
  5074. * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
  5075. * and places the remaining xdr data in xdr_buf->tail
  5076. */
  5077. pdev->mincount = be32_to_cpup(p);
  5078. if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
  5079. goto out_overflow;
  5080. /* Parse notification bitmap, verifying that it is zero. */
  5081. p = xdr_inline_decode(xdr, 4);
  5082. if (unlikely(!p))
  5083. goto out_overflow;
  5084. len = be32_to_cpup(p);
  5085. if (len) {
  5086. uint32_t i;
  5087. p = xdr_inline_decode(xdr, 4 * len);
  5088. if (unlikely(!p))
  5089. goto out_overflow;
  5090. for (i = 0; i < len; i++, p++) {
  5091. if (be32_to_cpup(p)) {
  5092. dprintk("%s: notifications not supported\n",
  5093. __func__);
  5094. return -EIO;
  5095. }
  5096. }
  5097. }
  5098. return 0;
  5099. out_overflow:
  5100. print_overflow_msg(__func__, xdr);
  5101. return -EIO;
  5102. }
  5103. static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
  5104. struct nfs4_layoutget_res *res)
  5105. {
  5106. __be32 *p;
  5107. int status;
  5108. u32 layout_count;
  5109. u32 recvd;
  5110. status = decode_op_hdr(xdr, OP_LAYOUTGET);
  5111. if (status)
  5112. return status;
  5113. p = xdr_inline_decode(xdr, 4);
  5114. if (unlikely(!p))
  5115. goto out_overflow;
  5116. res->return_on_close = be32_to_cpup(p);
  5117. decode_stateid(xdr, &res->stateid);
  5118. p = xdr_inline_decode(xdr, 4);
  5119. if (unlikely(!p))
  5120. goto out_overflow;
  5121. layout_count = be32_to_cpup(p);
  5122. if (!layout_count) {
  5123. dprintk("%s: server responded with empty layout array\n",
  5124. __func__);
  5125. return -EINVAL;
  5126. }
  5127. p = xdr_inline_decode(xdr, 28);
  5128. if (unlikely(!p))
  5129. goto out_overflow;
  5130. p = xdr_decode_hyper(p, &res->range.offset);
  5131. p = xdr_decode_hyper(p, &res->range.length);
  5132. res->range.iomode = be32_to_cpup(p++);
  5133. res->type = be32_to_cpup(p++);
  5134. res->layoutp->len = be32_to_cpup(p);
  5135. dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
  5136. __func__,
  5137. (unsigned long)res->range.offset,
  5138. (unsigned long)res->range.length,
  5139. res->range.iomode,
  5140. res->type,
  5141. res->layoutp->len);
  5142. recvd = xdr_read_pages(xdr, res->layoutp->len);
  5143. if (res->layoutp->len > recvd) {
  5144. dprintk("NFS: server cheating in layoutget reply: "
  5145. "layout len %u > recvd %u\n",
  5146. res->layoutp->len, recvd);
  5147. return -EINVAL;
  5148. }
  5149. if (layout_count > 1) {
  5150. /* We only handle a length one array at the moment. Any
  5151. * further entries are just ignored. Note that this means
  5152. * the client may see a response that is less than the
  5153. * minimum it requested.
  5154. */
  5155. dprintk("%s: server responded with %d layouts, dropping tail\n",
  5156. __func__, layout_count);
  5157. }
  5158. return 0;
  5159. out_overflow:
  5160. print_overflow_msg(__func__, xdr);
  5161. return -EIO;
  5162. }
  5163. static int decode_layoutreturn(struct xdr_stream *xdr,
  5164. struct nfs4_layoutreturn_res *res)
  5165. {
  5166. __be32 *p;
  5167. int status;
  5168. status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
  5169. if (status)
  5170. return status;
  5171. p = xdr_inline_decode(xdr, 4);
  5172. if (unlikely(!p))
  5173. goto out_overflow;
  5174. res->lrs_present = be32_to_cpup(p);
  5175. if (res->lrs_present)
  5176. status = decode_stateid(xdr, &res->stateid);
  5177. return status;
  5178. out_overflow:
  5179. print_overflow_msg(__func__, xdr);
  5180. return -EIO;
  5181. }
  5182. static int decode_layoutcommit(struct xdr_stream *xdr,
  5183. struct rpc_rqst *req,
  5184. struct nfs4_layoutcommit_res *res)
  5185. {
  5186. __be32 *p;
  5187. __u32 sizechanged;
  5188. int status;
  5189. status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
  5190. res->status = status;
  5191. if (status)
  5192. return status;
  5193. p = xdr_inline_decode(xdr, 4);
  5194. if (unlikely(!p))
  5195. goto out_overflow;
  5196. sizechanged = be32_to_cpup(p);
  5197. if (sizechanged) {
  5198. /* throw away new size */
  5199. p = xdr_inline_decode(xdr, 8);
  5200. if (unlikely(!p))
  5201. goto out_overflow;
  5202. }
  5203. return 0;
  5204. out_overflow:
  5205. print_overflow_msg(__func__, xdr);
  5206. return -EIO;
  5207. }
  5208. static int decode_test_stateid(struct xdr_stream *xdr,
  5209. struct nfs41_test_stateid_res *res)
  5210. {
  5211. __be32 *p;
  5212. int status;
  5213. int num_res;
  5214. status = decode_op_hdr(xdr, OP_TEST_STATEID);
  5215. if (status)
  5216. return status;
  5217. p = xdr_inline_decode(xdr, 4);
  5218. if (unlikely(!p))
  5219. goto out_overflow;
  5220. num_res = be32_to_cpup(p++);
  5221. if (num_res != 1)
  5222. goto out;
  5223. p = xdr_inline_decode(xdr, 4);
  5224. if (unlikely(!p))
  5225. goto out_overflow;
  5226. res->status = be32_to_cpup(p++);
  5227. return status;
  5228. out_overflow:
  5229. print_overflow_msg(__func__, xdr);
  5230. out:
  5231. return -EIO;
  5232. }
  5233. static int decode_free_stateid(struct xdr_stream *xdr,
  5234. struct nfs41_free_stateid_res *res)
  5235. {
  5236. __be32 *p;
  5237. int status;
  5238. status = decode_op_hdr(xdr, OP_FREE_STATEID);
  5239. if (status)
  5240. return status;
  5241. p = xdr_inline_decode(xdr, 4);
  5242. if (unlikely(!p))
  5243. goto out_overflow;
  5244. res->status = be32_to_cpup(p++);
  5245. return res->status;
  5246. out_overflow:
  5247. print_overflow_msg(__func__, xdr);
  5248. return -EIO;
  5249. }
  5250. #endif /* CONFIG_NFS_V4_1 */
  5251. /*
  5252. * END OF "GENERIC" DECODE ROUTINES.
  5253. */
  5254. /*
  5255. * Decode OPEN_DOWNGRADE response
  5256. */
  5257. static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
  5258. struct xdr_stream *xdr,
  5259. struct nfs_closeres *res)
  5260. {
  5261. struct compound_hdr hdr;
  5262. int status;
  5263. status = decode_compound_hdr(xdr, &hdr);
  5264. if (status)
  5265. goto out;
  5266. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5267. if (status)
  5268. goto out;
  5269. status = decode_putfh(xdr);
  5270. if (status)
  5271. goto out;
  5272. status = decode_open_downgrade(xdr, res);
  5273. if (status != 0)
  5274. goto out;
  5275. decode_getfattr(xdr, res->fattr, res->server);
  5276. out:
  5277. return status;
  5278. }
  5279. /*
  5280. * Decode ACCESS response
  5281. */
  5282. static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5283. struct nfs4_accessres *res)
  5284. {
  5285. struct compound_hdr hdr;
  5286. int status;
  5287. status = decode_compound_hdr(xdr, &hdr);
  5288. if (status)
  5289. goto out;
  5290. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5291. if (status)
  5292. goto out;
  5293. status = decode_putfh(xdr);
  5294. if (status != 0)
  5295. goto out;
  5296. status = decode_access(xdr, &res->supported, &res->access);
  5297. if (status != 0)
  5298. goto out;
  5299. decode_getfattr(xdr, res->fattr, res->server);
  5300. out:
  5301. return status;
  5302. }
  5303. /*
  5304. * Decode LOOKUP response
  5305. */
  5306. static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5307. struct nfs4_lookup_res *res)
  5308. {
  5309. struct compound_hdr hdr;
  5310. int status;
  5311. status = decode_compound_hdr(xdr, &hdr);
  5312. if (status)
  5313. goto out;
  5314. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5315. if (status)
  5316. goto out;
  5317. status = decode_putfh(xdr);
  5318. if (status)
  5319. goto out;
  5320. status = decode_lookup(xdr);
  5321. if (status)
  5322. goto out;
  5323. status = decode_getfh(xdr, res->fh);
  5324. if (status)
  5325. goto out;
  5326. status = decode_getfattr(xdr, res->fattr, res->server);
  5327. out:
  5328. return status;
  5329. }
  5330. /*
  5331. * Decode LOOKUP_ROOT response
  5332. */
  5333. static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
  5334. struct xdr_stream *xdr,
  5335. struct nfs4_lookup_res *res)
  5336. {
  5337. struct compound_hdr hdr;
  5338. int status;
  5339. status = decode_compound_hdr(xdr, &hdr);
  5340. if (status)
  5341. goto out;
  5342. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5343. if (status)
  5344. goto out;
  5345. status = decode_putrootfh(xdr);
  5346. if (status)
  5347. goto out;
  5348. status = decode_getfh(xdr, res->fh);
  5349. if (status == 0)
  5350. status = decode_getfattr(xdr, res->fattr, res->server);
  5351. out:
  5352. return status;
  5353. }
  5354. /*
  5355. * Decode REMOVE response
  5356. */
  5357. static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5358. struct nfs_removeres *res)
  5359. {
  5360. struct compound_hdr hdr;
  5361. int status;
  5362. status = decode_compound_hdr(xdr, &hdr);
  5363. if (status)
  5364. goto out;
  5365. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5366. if (status)
  5367. goto out;
  5368. status = decode_putfh(xdr);
  5369. if (status)
  5370. goto out;
  5371. status = decode_remove(xdr, &res->cinfo);
  5372. out:
  5373. return status;
  5374. }
  5375. /*
  5376. * Decode RENAME response
  5377. */
  5378. static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5379. struct nfs_renameres *res)
  5380. {
  5381. struct compound_hdr hdr;
  5382. int status;
  5383. status = decode_compound_hdr(xdr, &hdr);
  5384. if (status)
  5385. goto out;
  5386. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5387. if (status)
  5388. goto out;
  5389. status = decode_putfh(xdr);
  5390. if (status)
  5391. goto out;
  5392. status = decode_savefh(xdr);
  5393. if (status)
  5394. goto out;
  5395. status = decode_putfh(xdr);
  5396. if (status)
  5397. goto out;
  5398. status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
  5399. out:
  5400. return status;
  5401. }
  5402. /*
  5403. * Decode LINK response
  5404. */
  5405. static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5406. struct nfs4_link_res *res)
  5407. {
  5408. struct compound_hdr hdr;
  5409. int status;
  5410. status = decode_compound_hdr(xdr, &hdr);
  5411. if (status)
  5412. goto out;
  5413. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5414. if (status)
  5415. goto out;
  5416. status = decode_putfh(xdr);
  5417. if (status)
  5418. goto out;
  5419. status = decode_savefh(xdr);
  5420. if (status)
  5421. goto out;
  5422. status = decode_putfh(xdr);
  5423. if (status)
  5424. goto out;
  5425. status = decode_link(xdr, &res->cinfo);
  5426. if (status)
  5427. goto out;
  5428. /*
  5429. * Note order: OP_LINK leaves the directory as the current
  5430. * filehandle.
  5431. */
  5432. status = decode_restorefh(xdr);
  5433. if (status)
  5434. goto out;
  5435. decode_getfattr(xdr, res->fattr, res->server);
  5436. out:
  5437. return status;
  5438. }
  5439. /*
  5440. * Decode CREATE response
  5441. */
  5442. static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5443. struct nfs4_create_res *res)
  5444. {
  5445. struct compound_hdr hdr;
  5446. int status;
  5447. status = decode_compound_hdr(xdr, &hdr);
  5448. if (status)
  5449. goto out;
  5450. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5451. if (status)
  5452. goto out;
  5453. status = decode_putfh(xdr);
  5454. if (status)
  5455. goto out;
  5456. status = decode_create(xdr, &res->dir_cinfo);
  5457. if (status)
  5458. goto out;
  5459. status = decode_getfh(xdr, res->fh);
  5460. if (status)
  5461. goto out;
  5462. decode_getfattr(xdr, res->fattr, res->server);
  5463. out:
  5464. return status;
  5465. }
  5466. /*
  5467. * Decode SYMLINK response
  5468. */
  5469. static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5470. struct nfs4_create_res *res)
  5471. {
  5472. return nfs4_xdr_dec_create(rqstp, xdr, res);
  5473. }
  5474. /*
  5475. * Decode GETATTR response
  5476. */
  5477. static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5478. struct nfs4_getattr_res *res)
  5479. {
  5480. struct compound_hdr hdr;
  5481. int status;
  5482. status = decode_compound_hdr(xdr, &hdr);
  5483. if (status)
  5484. goto out;
  5485. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5486. if (status)
  5487. goto out;
  5488. status = decode_putfh(xdr);
  5489. if (status)
  5490. goto out;
  5491. status = decode_getfattr(xdr, res->fattr, res->server);
  5492. out:
  5493. return status;
  5494. }
  5495. /*
  5496. * Encode an SETACL request
  5497. */
  5498. static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
  5499. struct nfs_setaclargs *args)
  5500. {
  5501. struct compound_hdr hdr = {
  5502. .minorversion = nfs4_xdr_minorversion(&args->seq_args),
  5503. };
  5504. encode_compound_hdr(xdr, req, &hdr);
  5505. encode_sequence(xdr, &args->seq_args, &hdr);
  5506. encode_putfh(xdr, args->fh, &hdr);
  5507. encode_setacl(xdr, args, &hdr);
  5508. encode_nops(&hdr);
  5509. }
  5510. /*
  5511. * Decode SETACL response
  5512. */
  5513. static int
  5514. nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5515. struct nfs_setaclres *res)
  5516. {
  5517. struct compound_hdr hdr;
  5518. int status;
  5519. status = decode_compound_hdr(xdr, &hdr);
  5520. if (status)
  5521. goto out;
  5522. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5523. if (status)
  5524. goto out;
  5525. status = decode_putfh(xdr);
  5526. if (status)
  5527. goto out;
  5528. status = decode_setattr(xdr);
  5529. out:
  5530. return status;
  5531. }
  5532. /*
  5533. * Decode GETACL response
  5534. */
  5535. static int
  5536. nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5537. struct nfs_getaclres *res)
  5538. {
  5539. struct compound_hdr hdr;
  5540. int status;
  5541. if (res->acl_scratch != NULL) {
  5542. void *p = page_address(res->acl_scratch);
  5543. xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
  5544. }
  5545. status = decode_compound_hdr(xdr, &hdr);
  5546. if (status)
  5547. goto out;
  5548. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5549. if (status)
  5550. goto out;
  5551. status = decode_putfh(xdr);
  5552. if (status)
  5553. goto out;
  5554. status = decode_getacl(xdr, rqstp, res);
  5555. out:
  5556. return status;
  5557. }
  5558. /*
  5559. * Decode CLOSE response
  5560. */
  5561. static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5562. struct nfs_closeres *res)
  5563. {
  5564. struct compound_hdr hdr;
  5565. int status;
  5566. status = decode_compound_hdr(xdr, &hdr);
  5567. if (status)
  5568. goto out;
  5569. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5570. if (status)
  5571. goto out;
  5572. status = decode_putfh(xdr);
  5573. if (status)
  5574. goto out;
  5575. status = decode_close(xdr, res);
  5576. if (status != 0)
  5577. goto out;
  5578. /*
  5579. * Note: Server may do delete on close for this file
  5580. * in which case the getattr call will fail with
  5581. * an ESTALE error. Shouldn't be a problem,
  5582. * though, since fattr->valid will remain unset.
  5583. */
  5584. decode_getfattr(xdr, res->fattr, res->server);
  5585. out:
  5586. return status;
  5587. }
  5588. /*
  5589. * Decode OPEN response
  5590. */
  5591. static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5592. struct nfs_openres *res)
  5593. {
  5594. struct compound_hdr hdr;
  5595. int status;
  5596. status = decode_compound_hdr(xdr, &hdr);
  5597. if (status)
  5598. goto out;
  5599. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5600. if (status)
  5601. goto out;
  5602. status = decode_putfh(xdr);
  5603. if (status)
  5604. goto out;
  5605. status = decode_open(xdr, res);
  5606. if (status)
  5607. goto out;
  5608. status = decode_getfh(xdr, &res->fh);
  5609. if (status)
  5610. goto out;
  5611. if (res->access_request)
  5612. decode_access(xdr, &res->access_supported, &res->access_result);
  5613. decode_getfattr(xdr, res->f_attr, res->server);
  5614. out:
  5615. return status;
  5616. }
  5617. /*
  5618. * Decode OPEN_CONFIRM response
  5619. */
  5620. static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
  5621. struct xdr_stream *xdr,
  5622. struct nfs_open_confirmres *res)
  5623. {
  5624. struct compound_hdr hdr;
  5625. int status;
  5626. status = decode_compound_hdr(xdr, &hdr);
  5627. if (status)
  5628. goto out;
  5629. status = decode_putfh(xdr);
  5630. if (status)
  5631. goto out;
  5632. status = decode_open_confirm(xdr, res);
  5633. out:
  5634. return status;
  5635. }
  5636. /*
  5637. * Decode OPEN response
  5638. */
  5639. static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
  5640. struct xdr_stream *xdr,
  5641. struct nfs_openres *res)
  5642. {
  5643. struct compound_hdr hdr;
  5644. int status;
  5645. status = decode_compound_hdr(xdr, &hdr);
  5646. if (status)
  5647. goto out;
  5648. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5649. if (status)
  5650. goto out;
  5651. status = decode_putfh(xdr);
  5652. if (status)
  5653. goto out;
  5654. status = decode_open(xdr, res);
  5655. if (status)
  5656. goto out;
  5657. if (res->access_request)
  5658. decode_access(xdr, &res->access_supported, &res->access_result);
  5659. decode_getfattr(xdr, res->f_attr, res->server);
  5660. out:
  5661. return status;
  5662. }
  5663. /*
  5664. * Decode SETATTR response
  5665. */
  5666. static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
  5667. struct xdr_stream *xdr,
  5668. struct nfs_setattrres *res)
  5669. {
  5670. struct compound_hdr hdr;
  5671. int status;
  5672. status = decode_compound_hdr(xdr, &hdr);
  5673. if (status)
  5674. goto out;
  5675. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5676. if (status)
  5677. goto out;
  5678. status = decode_putfh(xdr);
  5679. if (status)
  5680. goto out;
  5681. status = decode_setattr(xdr);
  5682. if (status)
  5683. goto out;
  5684. decode_getfattr(xdr, res->fattr, res->server);
  5685. out:
  5686. return status;
  5687. }
  5688. /*
  5689. * Decode LOCK response
  5690. */
  5691. static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5692. struct nfs_lock_res *res)
  5693. {
  5694. struct compound_hdr hdr;
  5695. int status;
  5696. status = decode_compound_hdr(xdr, &hdr);
  5697. if (status)
  5698. goto out;
  5699. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5700. if (status)
  5701. goto out;
  5702. status = decode_putfh(xdr);
  5703. if (status)
  5704. goto out;
  5705. status = decode_lock(xdr, res);
  5706. out:
  5707. return status;
  5708. }
  5709. /*
  5710. * Decode LOCKT response
  5711. */
  5712. static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5713. struct nfs_lockt_res *res)
  5714. {
  5715. struct compound_hdr hdr;
  5716. int status;
  5717. status = decode_compound_hdr(xdr, &hdr);
  5718. if (status)
  5719. goto out;
  5720. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5721. if (status)
  5722. goto out;
  5723. status = decode_putfh(xdr);
  5724. if (status)
  5725. goto out;
  5726. status = decode_lockt(xdr, res);
  5727. out:
  5728. return status;
  5729. }
  5730. /*
  5731. * Decode LOCKU response
  5732. */
  5733. static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5734. struct nfs_locku_res *res)
  5735. {
  5736. struct compound_hdr hdr;
  5737. int status;
  5738. status = decode_compound_hdr(xdr, &hdr);
  5739. if (status)
  5740. goto out;
  5741. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5742. if (status)
  5743. goto out;
  5744. status = decode_putfh(xdr);
  5745. if (status)
  5746. goto out;
  5747. status = decode_locku(xdr, res);
  5748. out:
  5749. return status;
  5750. }
  5751. static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
  5752. struct xdr_stream *xdr, void *dummy)
  5753. {
  5754. struct compound_hdr hdr;
  5755. int status;
  5756. status = decode_compound_hdr(xdr, &hdr);
  5757. if (!status)
  5758. status = decode_release_lockowner(xdr);
  5759. return status;
  5760. }
  5761. /*
  5762. * Decode READLINK response
  5763. */
  5764. static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
  5765. struct xdr_stream *xdr,
  5766. struct nfs4_readlink_res *res)
  5767. {
  5768. struct compound_hdr hdr;
  5769. int status;
  5770. status = decode_compound_hdr(xdr, &hdr);
  5771. if (status)
  5772. goto out;
  5773. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5774. if (status)
  5775. goto out;
  5776. status = decode_putfh(xdr);
  5777. if (status)
  5778. goto out;
  5779. status = decode_readlink(xdr, rqstp);
  5780. out:
  5781. return status;
  5782. }
  5783. /*
  5784. * Decode READDIR response
  5785. */
  5786. static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5787. struct nfs4_readdir_res *res)
  5788. {
  5789. struct compound_hdr hdr;
  5790. int status;
  5791. status = decode_compound_hdr(xdr, &hdr);
  5792. if (status)
  5793. goto out;
  5794. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5795. if (status)
  5796. goto out;
  5797. status = decode_putfh(xdr);
  5798. if (status)
  5799. goto out;
  5800. status = decode_readdir(xdr, rqstp, res);
  5801. out:
  5802. return status;
  5803. }
  5804. /*
  5805. * Decode Read response
  5806. */
  5807. static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5808. struct nfs_readres *res)
  5809. {
  5810. struct compound_hdr hdr;
  5811. int status;
  5812. status = decode_compound_hdr(xdr, &hdr);
  5813. if (status)
  5814. goto out;
  5815. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5816. if (status)
  5817. goto out;
  5818. status = decode_putfh(xdr);
  5819. if (status)
  5820. goto out;
  5821. status = decode_read(xdr, rqstp, res);
  5822. if (!status)
  5823. status = res->count;
  5824. out:
  5825. return status;
  5826. }
  5827. /*
  5828. * Decode WRITE response
  5829. */
  5830. static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5831. struct nfs_writeres *res)
  5832. {
  5833. struct compound_hdr hdr;
  5834. int status;
  5835. status = decode_compound_hdr(xdr, &hdr);
  5836. if (status)
  5837. goto out;
  5838. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5839. if (status)
  5840. goto out;
  5841. status = decode_putfh(xdr);
  5842. if (status)
  5843. goto out;
  5844. status = decode_write(xdr, res);
  5845. if (status)
  5846. goto out;
  5847. if (res->fattr)
  5848. decode_getfattr(xdr, res->fattr, res->server);
  5849. if (!status)
  5850. status = res->count;
  5851. out:
  5852. return status;
  5853. }
  5854. /*
  5855. * Decode COMMIT response
  5856. */
  5857. static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5858. struct nfs_commitres *res)
  5859. {
  5860. struct compound_hdr hdr;
  5861. int status;
  5862. status = decode_compound_hdr(xdr, &hdr);
  5863. if (status)
  5864. goto out;
  5865. status = decode_sequence(xdr, &res->seq_res, rqstp);
  5866. if (status)
  5867. goto out;
  5868. status = decode_putfh(xdr);
  5869. if (status)
  5870. goto out;
  5871. status = decode_commit(xdr, res);
  5872. out:
  5873. return status;
  5874. }
  5875. /*
  5876. * Decode FSINFO response
  5877. */
  5878. static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
  5879. struct nfs4_fsinfo_res *res)
  5880. {
  5881. struct compound_hdr hdr;
  5882. int status;
  5883. status = decode_compound_hdr(xdr, &hdr);
  5884. if (!status)
  5885. status = decode_sequence(xdr, &res->seq_res, req);
  5886. if (!status)
  5887. status = decode_putfh(xdr);
  5888. if (!status)
  5889. status = decode_fsinfo(xdr, res->fsinfo);
  5890. return status;
  5891. }
  5892. /*
  5893. * Decode PATHCONF response
  5894. */
  5895. static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
  5896. struct nfs4_pathconf_res *res)
  5897. {
  5898. struct compound_hdr hdr;
  5899. int status;
  5900. status = decode_compound_hdr(xdr, &hdr);
  5901. if (!status)
  5902. status = decode_sequence(xdr, &res->seq_res, req);
  5903. if (!status)
  5904. status = decode_putfh(xdr);
  5905. if (!status)
  5906. status = decode_pathconf(xdr, res->pathconf);
  5907. return status;
  5908. }
  5909. /*
  5910. * Decode STATFS response
  5911. */
  5912. static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
  5913. struct nfs4_statfs_res *res)
  5914. {
  5915. struct compound_hdr hdr;
  5916. int status;
  5917. status = decode_compound_hdr(xdr, &hdr);
  5918. if (!status)
  5919. status = decode_sequence(xdr, &res->seq_res, req);
  5920. if (!status)
  5921. status = decode_putfh(xdr);
  5922. if (!status)
  5923. status = decode_statfs(xdr, res->fsstat);
  5924. return status;
  5925. }
  5926. /*
  5927. * Decode GETATTR_BITMAP response
  5928. */
  5929. static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
  5930. struct xdr_stream *xdr,
  5931. struct nfs4_server_caps_res *res)
  5932. {
  5933. struct compound_hdr hdr;
  5934. int status;
  5935. status = decode_compound_hdr(xdr, &hdr);
  5936. if (status)
  5937. goto out;
  5938. status = decode_sequence(xdr, &res->seq_res, req);
  5939. if (status)
  5940. goto out;
  5941. status = decode_putfh(xdr);
  5942. if (status)
  5943. goto out;
  5944. status = decode_server_caps(xdr, res);
  5945. out:
  5946. return status;
  5947. }
  5948. /*
  5949. * Decode RENEW response
  5950. */
  5951. static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
  5952. void *__unused)
  5953. {
  5954. struct compound_hdr hdr;
  5955. int status;
  5956. status = decode_compound_hdr(xdr, &hdr);
  5957. if (!status)
  5958. status = decode_renew(xdr);
  5959. return status;
  5960. }
  5961. /*
  5962. * Decode SETCLIENTID response
  5963. */
  5964. static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
  5965. struct xdr_stream *xdr,
  5966. struct nfs4_setclientid_res *res)
  5967. {
  5968. struct compound_hdr hdr;
  5969. int status;
  5970. status = decode_compound_hdr(xdr, &hdr);
  5971. if (!status)
  5972. status = decode_setclientid(xdr, res);
  5973. return status;
  5974. }
  5975. /*
  5976. * Decode SETCLIENTID_CONFIRM response
  5977. */
  5978. static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
  5979. struct xdr_stream *xdr,
  5980. struct nfs_fsinfo *fsinfo)
  5981. {
  5982. struct compound_hdr hdr;
  5983. int status;
  5984. status = decode_compound_hdr(xdr, &hdr);
  5985. if (!status)
  5986. status = decode_setclientid_confirm(xdr);
  5987. if (!status)
  5988. status = decode_putrootfh(xdr);
  5989. if (!status)
  5990. status = decode_fsinfo(xdr, fsinfo);
  5991. return status;
  5992. }
  5993. /*
  5994. * Decode DELEGRETURN response
  5995. */
  5996. static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
  5997. struct xdr_stream *xdr,
  5998. struct nfs4_delegreturnres *res)
  5999. {
  6000. struct compound_hdr hdr;
  6001. int status;
  6002. status = decode_compound_hdr(xdr, &hdr);
  6003. if (status)
  6004. goto out;
  6005. status = decode_sequence(xdr, &res->seq_res, rqstp);
  6006. if (status)
  6007. goto out;
  6008. status = decode_putfh(xdr);
  6009. if (status != 0)
  6010. goto out;
  6011. status = decode_getfattr(xdr, res->fattr, res->server);
  6012. if (status != 0)
  6013. goto out;
  6014. status = decode_delegreturn(xdr);
  6015. out:
  6016. return status;
  6017. }
  6018. /*
  6019. * Decode FS_LOCATIONS response
  6020. */
  6021. static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
  6022. struct xdr_stream *xdr,
  6023. struct nfs4_fs_locations_res *res)
  6024. {
  6025. struct compound_hdr hdr;
  6026. int status;
  6027. status = decode_compound_hdr(xdr, &hdr);
  6028. if (status)
  6029. goto out;
  6030. status = decode_sequence(xdr, &res->seq_res, req);
  6031. if (status)
  6032. goto out;
  6033. status = decode_putfh(xdr);
  6034. if (status)
  6035. goto out;
  6036. status = decode_lookup(xdr);
  6037. if (status)
  6038. goto out;
  6039. xdr_enter_page(xdr, PAGE_SIZE);
  6040. status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
  6041. NULL, res->fs_locations,
  6042. res->fs_locations->server);
  6043. out:
  6044. return status;
  6045. }
  6046. /*
  6047. * Decode SECINFO response
  6048. */
  6049. static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
  6050. struct xdr_stream *xdr,
  6051. struct nfs4_secinfo_res *res)
  6052. {
  6053. struct compound_hdr hdr;
  6054. int status;
  6055. status = decode_compound_hdr(xdr, &hdr);
  6056. if (status)
  6057. goto out;
  6058. status = decode_sequence(xdr, &res->seq_res, rqstp);
  6059. if (status)
  6060. goto out;
  6061. status = decode_putfh(xdr);
  6062. if (status)
  6063. goto out;
  6064. status = decode_secinfo(xdr, res);
  6065. out:
  6066. return status;
  6067. }
  6068. #if defined(CONFIG_NFS_V4_1)
  6069. /*
  6070. * Decode BIND_CONN_TO_SESSION response
  6071. */
  6072. static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
  6073. struct xdr_stream *xdr,
  6074. void *res)
  6075. {
  6076. struct compound_hdr hdr;
  6077. int status;
  6078. status = decode_compound_hdr(xdr, &hdr);
  6079. if (!status)
  6080. status = decode_bind_conn_to_session(xdr, res);
  6081. return status;
  6082. }
  6083. /*
  6084. * Decode EXCHANGE_ID response
  6085. */
  6086. static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
  6087. struct xdr_stream *xdr,
  6088. void *res)
  6089. {
  6090. struct compound_hdr hdr;
  6091. int status;
  6092. status = decode_compound_hdr(xdr, &hdr);
  6093. if (!status)
  6094. status = decode_exchange_id(xdr, res);
  6095. return status;
  6096. }
  6097. /*
  6098. * Decode CREATE_SESSION response
  6099. */
  6100. static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
  6101. struct xdr_stream *xdr,
  6102. struct nfs41_create_session_res *res)
  6103. {
  6104. struct compound_hdr hdr;
  6105. int status;
  6106. status = decode_compound_hdr(xdr, &hdr);
  6107. if (!status)
  6108. status = decode_create_session(xdr, res);
  6109. return status;
  6110. }
  6111. /*
  6112. * Decode DESTROY_SESSION response
  6113. */
  6114. static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
  6115. struct xdr_stream *xdr,
  6116. void *res)
  6117. {
  6118. struct compound_hdr hdr;
  6119. int status;
  6120. status = decode_compound_hdr(xdr, &hdr);
  6121. if (!status)
  6122. status = decode_destroy_session(xdr, res);
  6123. return status;
  6124. }
  6125. /*
  6126. * Decode DESTROY_CLIENTID response
  6127. */
  6128. static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
  6129. struct xdr_stream *xdr,
  6130. void *res)
  6131. {
  6132. struct compound_hdr hdr;
  6133. int status;
  6134. status = decode_compound_hdr(xdr, &hdr);
  6135. if (!status)
  6136. status = decode_destroy_clientid(xdr, res);
  6137. return status;
  6138. }
  6139. /*
  6140. * Decode SEQUENCE response
  6141. */
  6142. static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
  6143. struct xdr_stream *xdr,
  6144. struct nfs4_sequence_res *res)
  6145. {
  6146. struct compound_hdr hdr;
  6147. int status;
  6148. status = decode_compound_hdr(xdr, &hdr);
  6149. if (!status)
  6150. status = decode_sequence(xdr, res, rqstp);
  6151. return status;
  6152. }
  6153. /*
  6154. * Decode GET_LEASE_TIME response
  6155. */
  6156. static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
  6157. struct xdr_stream *xdr,
  6158. struct nfs4_get_lease_time_res *res)
  6159. {
  6160. struct compound_hdr hdr;
  6161. int status;
  6162. status = decode_compound_hdr(xdr, &hdr);
  6163. if (!status)
  6164. status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
  6165. if (!status)
  6166. status = decode_putrootfh(xdr);
  6167. if (!status)
  6168. status = decode_fsinfo(xdr, res->lr_fsinfo);
  6169. return status;
  6170. }
  6171. /*
  6172. * Decode RECLAIM_COMPLETE response
  6173. */
  6174. static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
  6175. struct xdr_stream *xdr,
  6176. struct nfs41_reclaim_complete_res *res)
  6177. {
  6178. struct compound_hdr hdr;
  6179. int status;
  6180. status = decode_compound_hdr(xdr, &hdr);
  6181. if (!status)
  6182. status = decode_sequence(xdr, &res->seq_res, rqstp);
  6183. if (!status)
  6184. status = decode_reclaim_complete(xdr, (void *)NULL);
  6185. return status;
  6186. }
  6187. /*
  6188. * Decode GETDEVICELIST response
  6189. */
  6190. static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
  6191. struct xdr_stream *xdr,
  6192. struct nfs4_getdevicelist_res *res)
  6193. {
  6194. struct compound_hdr hdr;
  6195. int status;
  6196. dprintk("encoding getdevicelist!\n");
  6197. status = decode_compound_hdr(xdr, &hdr);
  6198. if (status != 0)
  6199. goto out;
  6200. status = decode_sequence(xdr, &res->seq_res, rqstp);
  6201. if (status != 0)
  6202. goto out;
  6203. status = decode_putfh(xdr);
  6204. if (status != 0)
  6205. goto out;
  6206. status = decode_getdevicelist(xdr, res->devlist);
  6207. out:
  6208. return status;
  6209. }
  6210. /*
  6211. * Decode GETDEVINFO response
  6212. */
  6213. static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
  6214. struct xdr_stream *xdr,
  6215. struct nfs4_getdeviceinfo_res *res)
  6216. {
  6217. struct compound_hdr hdr;
  6218. int status;
  6219. status = decode_compound_hdr(xdr, &hdr);
  6220. if (status != 0)
  6221. goto out;
  6222. status = decode_sequence(xdr, &res->seq_res, rqstp);
  6223. if (status != 0)
  6224. goto out;
  6225. status = decode_getdeviceinfo(xdr, res->pdev);
  6226. out:
  6227. return status;
  6228. }
  6229. /*
  6230. * Decode LAYOUTGET response
  6231. */
  6232. static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
  6233. struct xdr_stream *xdr,
  6234. struct nfs4_layoutget_res *res)
  6235. {
  6236. struct compound_hdr hdr;
  6237. int status;
  6238. status = decode_compound_hdr(xdr, &hdr);
  6239. if (status)
  6240. goto out;
  6241. status = decode_sequence(xdr, &res->seq_res, rqstp);
  6242. if (status)
  6243. goto out;
  6244. status = decode_putfh(xdr);
  6245. if (status)
  6246. goto out;
  6247. status = decode_layoutget(xdr, rqstp, res);
  6248. out:
  6249. return status;
  6250. }
  6251. /*
  6252. * Decode LAYOUTRETURN response
  6253. */
  6254. static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
  6255. struct xdr_stream *xdr,
  6256. struct nfs4_layoutreturn_res *res)
  6257. {
  6258. struct compound_hdr hdr;
  6259. int status;
  6260. status = decode_compound_hdr(xdr, &hdr);
  6261. if (status)
  6262. goto out;
  6263. status = decode_sequence(xdr, &res->seq_res, rqstp);
  6264. if (status)
  6265. goto out;
  6266. status = decode_putfh(xdr);
  6267. if (status)
  6268. goto out;
  6269. status = decode_layoutreturn(xdr, res);
  6270. out:
  6271. return status;
  6272. }
  6273. /*
  6274. * Decode LAYOUTCOMMIT response
  6275. */
  6276. static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
  6277. struct xdr_stream *xdr,
  6278. struct nfs4_layoutcommit_res *res)
  6279. {
  6280. struct compound_hdr hdr;
  6281. int status;
  6282. status = decode_compound_hdr(xdr, &hdr);
  6283. if (status)
  6284. goto out;
  6285. status = decode_sequence(xdr, &res->seq_res, rqstp);
  6286. if (status)
  6287. goto out;
  6288. status = decode_putfh(xdr);
  6289. if (status)
  6290. goto out;
  6291. status = decode_layoutcommit(xdr, rqstp, res);
  6292. if (status)
  6293. goto out;
  6294. decode_getfattr(xdr, res->fattr, res->server);
  6295. out:
  6296. return status;
  6297. }
  6298. /*
  6299. * Decode SECINFO_NO_NAME response
  6300. */
  6301. static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
  6302. struct xdr_stream *xdr,
  6303. struct nfs4_secinfo_res *res)
  6304. {
  6305. struct compound_hdr hdr;
  6306. int status;
  6307. status = decode_compound_hdr(xdr, &hdr);
  6308. if (status)
  6309. goto out;
  6310. status = decode_sequence(xdr, &res->seq_res, rqstp);
  6311. if (status)
  6312. goto out;
  6313. status = decode_putrootfh(xdr);
  6314. if (status)
  6315. goto out;
  6316. status = decode_secinfo_no_name(xdr, res);
  6317. out:
  6318. return status;
  6319. }
  6320. /*
  6321. * Decode TEST_STATEID response
  6322. */
  6323. static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
  6324. struct xdr_stream *xdr,
  6325. struct nfs41_test_stateid_res *res)
  6326. {
  6327. struct compound_hdr hdr;
  6328. int status;
  6329. status = decode_compound_hdr(xdr, &hdr);
  6330. if (status)
  6331. goto out;
  6332. status = decode_sequence(xdr, &res->seq_res, rqstp);
  6333. if (status)
  6334. goto out;
  6335. status = decode_test_stateid(xdr, res);
  6336. out:
  6337. return status;
  6338. }
  6339. /*
  6340. * Decode FREE_STATEID response
  6341. */
  6342. static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
  6343. struct xdr_stream *xdr,
  6344. struct nfs41_free_stateid_res *res)
  6345. {
  6346. struct compound_hdr hdr;
  6347. int status;
  6348. status = decode_compound_hdr(xdr, &hdr);
  6349. if (status)
  6350. goto out;
  6351. status = decode_sequence(xdr, &res->seq_res, rqstp);
  6352. if (status)
  6353. goto out;
  6354. status = decode_free_stateid(xdr, res);
  6355. out:
  6356. return status;
  6357. }
  6358. #endif /* CONFIG_NFS_V4_1 */
  6359. /**
  6360. * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
  6361. * the local page cache.
  6362. * @xdr: XDR stream where entry resides
  6363. * @entry: buffer to fill in with entry data
  6364. * @plus: boolean indicating whether this should be a readdirplus entry
  6365. *
  6366. * Returns zero if successful, otherwise a negative errno value is
  6367. * returned.
  6368. *
  6369. * This function is not invoked during READDIR reply decoding, but
  6370. * rather whenever an application invokes the getdents(2) system call
  6371. * on a directory already in our cache.
  6372. */
  6373. int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
  6374. int plus)
  6375. {
  6376. unsigned int savep;
  6377. uint32_t bitmap[3] = {0};
  6378. uint32_t len;
  6379. __be32 *p = xdr_inline_decode(xdr, 4);
  6380. if (unlikely(!p))
  6381. goto out_overflow;
  6382. if (*p == xdr_zero) {
  6383. p = xdr_inline_decode(xdr, 4);
  6384. if (unlikely(!p))
  6385. goto out_overflow;
  6386. if (*p == xdr_zero)
  6387. return -EAGAIN;
  6388. entry->eof = 1;
  6389. return -EBADCOOKIE;
  6390. }
  6391. p = xdr_inline_decode(xdr, 12);
  6392. if (unlikely(!p))
  6393. goto out_overflow;
  6394. entry->prev_cookie = entry->cookie;
  6395. p = xdr_decode_hyper(p, &entry->cookie);
  6396. entry->len = be32_to_cpup(p);
  6397. p = xdr_inline_decode(xdr, entry->len);
  6398. if (unlikely(!p))
  6399. goto out_overflow;
  6400. entry->name = (const char *) p;
  6401. /*
  6402. * In case the server doesn't return an inode number,
  6403. * we fake one here. (We don't use inode number 0,
  6404. * since glibc seems to choke on it...)
  6405. */
  6406. entry->ino = 1;
  6407. entry->fattr->valid = 0;
  6408. if (decode_attr_bitmap(xdr, bitmap) < 0)
  6409. goto out_overflow;
  6410. if (decode_attr_length(xdr, &len, &savep) < 0)
  6411. goto out_overflow;
  6412. if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
  6413. NULL, entry->server) < 0)
  6414. goto out_overflow;
  6415. if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
  6416. entry->ino = entry->fattr->mounted_on_fileid;
  6417. else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
  6418. entry->ino = entry->fattr->fileid;
  6419. entry->d_type = DT_UNKNOWN;
  6420. if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
  6421. entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
  6422. return 0;
  6423. out_overflow:
  6424. print_overflow_msg(__func__, xdr);
  6425. return -EAGAIN;
  6426. }
  6427. /*
  6428. * We need to translate between nfs status return values and
  6429. * the local errno values which may not be the same.
  6430. */
  6431. static struct {
  6432. int stat;
  6433. int errno;
  6434. } nfs_errtbl[] = {
  6435. { NFS4_OK, 0 },
  6436. { NFS4ERR_PERM, -EPERM },
  6437. { NFS4ERR_NOENT, -ENOENT },
  6438. { NFS4ERR_IO, -errno_NFSERR_IO},
  6439. { NFS4ERR_NXIO, -ENXIO },
  6440. { NFS4ERR_ACCESS, -EACCES },
  6441. { NFS4ERR_EXIST, -EEXIST },
  6442. { NFS4ERR_XDEV, -EXDEV },
  6443. { NFS4ERR_NOTDIR, -ENOTDIR },
  6444. { NFS4ERR_ISDIR, -EISDIR },
  6445. { NFS4ERR_INVAL, -EINVAL },
  6446. { NFS4ERR_FBIG, -EFBIG },
  6447. { NFS4ERR_NOSPC, -ENOSPC },
  6448. { NFS4ERR_ROFS, -EROFS },
  6449. { NFS4ERR_MLINK, -EMLINK },
  6450. { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
  6451. { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
  6452. { NFS4ERR_DQUOT, -EDQUOT },
  6453. { NFS4ERR_STALE, -ESTALE },
  6454. { NFS4ERR_BADHANDLE, -EBADHANDLE },
  6455. { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
  6456. { NFS4ERR_NOTSUPP, -ENOTSUPP },
  6457. { NFS4ERR_TOOSMALL, -ETOOSMALL },
  6458. { NFS4ERR_SERVERFAULT, -EREMOTEIO },
  6459. { NFS4ERR_BADTYPE, -EBADTYPE },
  6460. { NFS4ERR_LOCKED, -EAGAIN },
  6461. { NFS4ERR_SYMLINK, -ELOOP },
  6462. { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
  6463. { NFS4ERR_DEADLOCK, -EDEADLK },
  6464. { -1, -EIO }
  6465. };
  6466. /*
  6467. * Convert an NFS error code to a local one.
  6468. * This one is used jointly by NFSv2 and NFSv3.
  6469. */
  6470. static int
  6471. nfs4_stat_to_errno(int stat)
  6472. {
  6473. int i;
  6474. for (i = 0; nfs_errtbl[i].stat != -1; i++) {
  6475. if (nfs_errtbl[i].stat == stat)
  6476. return nfs_errtbl[i].errno;
  6477. }
  6478. if (stat <= 10000 || stat > 10100) {
  6479. /* The server is looney tunes. */
  6480. return -EREMOTEIO;
  6481. }
  6482. /* If we cannot translate the error, the recovery routines should
  6483. * handle it.
  6484. * Note: remaining NFSv4 error codes have values > 10000, so should
  6485. * not conflict with native Linux error codes.
  6486. */
  6487. return -stat;
  6488. }
  6489. #define PROC(proc, argtype, restype) \
  6490. [NFSPROC4_CLNT_##proc] = { \
  6491. .p_proc = NFSPROC4_COMPOUND, \
  6492. .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
  6493. .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
  6494. .p_arglen = NFS4_##argtype##_sz, \
  6495. .p_replen = NFS4_##restype##_sz, \
  6496. .p_statidx = NFSPROC4_CLNT_##proc, \
  6497. .p_name = #proc, \
  6498. }
  6499. struct rpc_procinfo nfs4_procedures[] = {
  6500. PROC(READ, enc_read, dec_read),
  6501. PROC(WRITE, enc_write, dec_write),
  6502. PROC(COMMIT, enc_commit, dec_commit),
  6503. PROC(OPEN, enc_open, dec_open),
  6504. PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
  6505. PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
  6506. PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
  6507. PROC(CLOSE, enc_close, dec_close),
  6508. PROC(SETATTR, enc_setattr, dec_setattr),
  6509. PROC(FSINFO, enc_fsinfo, dec_fsinfo),
  6510. PROC(RENEW, enc_renew, dec_renew),
  6511. PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
  6512. PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
  6513. PROC(LOCK, enc_lock, dec_lock),
  6514. PROC(LOCKT, enc_lockt, dec_lockt),
  6515. PROC(LOCKU, enc_locku, dec_locku),
  6516. PROC(ACCESS, enc_access, dec_access),
  6517. PROC(GETATTR, enc_getattr, dec_getattr),
  6518. PROC(LOOKUP, enc_lookup, dec_lookup),
  6519. PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
  6520. PROC(REMOVE, enc_remove, dec_remove),
  6521. PROC(RENAME, enc_rename, dec_rename),
  6522. PROC(LINK, enc_link, dec_link),
  6523. PROC(SYMLINK, enc_symlink, dec_symlink),
  6524. PROC(CREATE, enc_create, dec_create),
  6525. PROC(PATHCONF, enc_pathconf, dec_pathconf),
  6526. PROC(STATFS, enc_statfs, dec_statfs),
  6527. PROC(READLINK, enc_readlink, dec_readlink),
  6528. PROC(READDIR, enc_readdir, dec_readdir),
  6529. PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
  6530. PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
  6531. PROC(GETACL, enc_getacl, dec_getacl),
  6532. PROC(SETACL, enc_setacl, dec_setacl),
  6533. PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
  6534. PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
  6535. PROC(SECINFO, enc_secinfo, dec_secinfo),
  6536. #if defined(CONFIG_NFS_V4_1)
  6537. PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
  6538. PROC(CREATE_SESSION, enc_create_session, dec_create_session),
  6539. PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
  6540. PROC(SEQUENCE, enc_sequence, dec_sequence),
  6541. PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
  6542. PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
  6543. PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
  6544. PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
  6545. PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
  6546. PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
  6547. PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
  6548. PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
  6549. PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
  6550. PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
  6551. PROC(BIND_CONN_TO_SESSION,
  6552. enc_bind_conn_to_session, dec_bind_conn_to_session),
  6553. PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
  6554. #endif /* CONFIG_NFS_V4_1 */
  6555. };
  6556. const struct rpc_version nfs_version4 = {
  6557. .number = 4,
  6558. .nrprocs = ARRAY_SIZE(nfs4_procedures),
  6559. .procs = nfs4_procedures
  6560. };
  6561. /*
  6562. * Local variables:
  6563. * c-basic-offset: 8
  6564. * End:
  6565. */