Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/nfs/nfs3xdr.c |
| 3 | * |
| 4 | * XDR functions to encode/decode NFSv3 RPC arguments and results. |
| 5 | * |
| 6 | * Copyright (C) 1996, 1997 Olaf Kirch |
| 7 | */ |
| 8 | |
| 9 | #include <linux/param.h> |
| 10 | #include <linux/time.h> |
| 11 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/errno.h> |
| 13 | #include <linux/string.h> |
| 14 | #include <linux/in.h> |
| 15 | #include <linux/pagemap.h> |
| 16 | #include <linux/proc_fs.h> |
| 17 | #include <linux/kdev_t.h> |
| 18 | #include <linux/sunrpc/clnt.h> |
| 19 | #include <linux/nfs.h> |
| 20 | #include <linux/nfs3.h> |
| 21 | #include <linux/nfs_fs.h> |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 22 | #include <linux/nfsacl.h> |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 23 | #include "internal.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | |
| 25 | #define NFSDBG_FACILITY NFSDBG_XDR |
| 26 | |
| 27 | /* Mapping from NFS error code to "errno" error code. */ |
| 28 | #define errno_NFSERR_IO EIO |
| 29 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | /* |
| 31 | * Declare the space requirements for NFS arguments and replies as |
| 32 | * number of 32bit-words |
| 33 | */ |
| 34 | #define NFS3_fhandle_sz (1+16) |
| 35 | #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ |
| 36 | #define NFS3_sattr_sz (15) |
| 37 | #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) |
| 38 | #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) |
| 39 | #define NFS3_fattr_sz (21) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 40 | #define NFS3_cookieverf_sz (NFS3_COOKIEVERFSIZE>>2) |
Chuck Lever | f5fc3c50 | 2010-12-14 14:56:42 +0000 | [diff] [blame] | 41 | #define NFS3_wcc_attr_sz (6) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) |
| 43 | #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) |
Chuck Lever | f5fc3c50 | 2010-12-14 14:56:42 +0000 | [diff] [blame] | 44 | #define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
Chuck Lever | ad96b5b | 2010-12-14 14:56:01 +0000 | [diff] [blame] | 46 | |
| 47 | #define NFS3_getattrargs_sz (NFS3_fh_sz) |
| 48 | #define NFS3_setattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) |
| 49 | #define NFS3_lookupargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #define NFS3_accessargs_sz (NFS3_fh_sz+1) |
| 51 | #define NFS3_readlinkargs_sz (NFS3_fh_sz) |
| 52 | #define NFS3_readargs_sz (NFS3_fh_sz+3) |
| 53 | #define NFS3_writeargs_sz (NFS3_fh_sz+5) |
| 54 | #define NFS3_createargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) |
| 55 | #define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 56 | #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz) |
Chuck Lever | ad96b5b | 2010-12-14 14:56:01 +0000 | [diff] [blame] | 58 | #define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz) |
| 60 | #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 61 | #define NFS3_readdirargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+3) |
| 62 | #define NFS3_readdirplusargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+4) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | #define NFS3_commitargs_sz (NFS3_fh_sz+3) |
| 64 | |
Chuck Lever | f5fc3c50 | 2010-12-14 14:56:42 +0000 | [diff] [blame] | 65 | #define NFS3_getattrres_sz (1+NFS3_fattr_sz) |
| 66 | #define NFS3_setattrres_sz (1+NFS3_wcc_data_sz) |
| 67 | #define NFS3_removeres_sz (NFS3_setattrres_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) |
| 69 | #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) |
| 70 | #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) |
| 71 | #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) |
| 72 | #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) |
| 73 | #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) |
| 74 | #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) |
| 75 | #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) |
| 76 | #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2) |
| 77 | #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) |
| 78 | #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) |
| 79 | #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) |
| 80 | #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) |
| 81 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 82 | #define ACL3_getaclargs_sz (NFS3_fh_sz+1) |
Trond Myklebust | ae46141 | 2009-03-10 20:33:18 -0400 | [diff] [blame] | 83 | #define ACL3_setaclargs_sz (NFS3_fh_sz+1+ \ |
| 84 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) |
| 85 | #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+ \ |
| 86 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 87 | #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) |
| 88 | |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 89 | static int nfs3_stat_to_errno(enum nfs_stat); |
| 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | /* |
| 92 | * Map file type to S_IFMT bits |
| 93 | */ |
Trond Myklebust | bca7947 | 2009-03-11 14:10:26 -0400 | [diff] [blame] | 94 | static const umode_t nfs_type2fmt[] = { |
| 95 | [NF3BAD] = 0, |
| 96 | [NF3REG] = S_IFREG, |
| 97 | [NF3DIR] = S_IFDIR, |
| 98 | [NF3BLK] = S_IFBLK, |
| 99 | [NF3CHR] = S_IFCHR, |
| 100 | [NF3LNK] = S_IFLNK, |
| 101 | [NF3SOCK] = S_IFSOCK, |
| 102 | [NF3FIFO] = S_IFIFO, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | }; |
| 104 | |
| 105 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 106 | * While encoding arguments, set up the reply buffer in advance to |
| 107 | * receive reply data directly into the page cache. |
| 108 | */ |
| 109 | static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages, |
| 110 | unsigned int base, unsigned int len, |
| 111 | unsigned int bufsize) |
| 112 | { |
| 113 | struct rpc_auth *auth = req->rq_cred->cr_auth; |
| 114 | unsigned int replen; |
| 115 | |
| 116 | replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize; |
| 117 | xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len); |
| 118 | } |
| 119 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 120 | /* |
| 121 | * Handle decode buffer overflows out-of-line. |
| 122 | */ |
| 123 | static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) |
| 124 | { |
| 125 | dprintk("NFS: %s prematurely hit the end of our receive buffer. " |
| 126 | "Remaining buffer length is %tu words.\n", |
| 127 | func, xdr->end - xdr->p); |
| 128 | } |
| 129 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 130 | |
| 131 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 132 | * Encode/decode NFSv3 basic data types |
| 133 | * |
| 134 | * Basic NFSv3 data types are defined in section 2.5 of RFC 1813: |
| 135 | * "NFS Version 3 Protocol Specification". |
| 136 | * |
| 137 | * Not all basic data types have their own encoding and decoding |
| 138 | * functions. For run-time efficiency, some data types are encoded |
| 139 | * or decoded inline. |
| 140 | */ |
| 141 | |
| 142 | static void encode_uint32(struct xdr_stream *xdr, u32 value) |
| 143 | { |
| 144 | __be32 *p = xdr_reserve_space(xdr, 4); |
| 145 | *p = cpu_to_be32(value); |
| 146 | } |
| 147 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 148 | static int decode_uint32(struct xdr_stream *xdr, u32 *value) |
| 149 | { |
| 150 | __be32 *p; |
| 151 | |
| 152 | p = xdr_inline_decode(xdr, 4); |
| 153 | if (unlikely(p == NULL)) |
| 154 | goto out_overflow; |
| 155 | *value = be32_to_cpup(p); |
| 156 | return 0; |
| 157 | out_overflow: |
| 158 | print_overflow_msg(__func__, xdr); |
| 159 | return -EIO; |
| 160 | } |
| 161 | |
| 162 | static int decode_uint64(struct xdr_stream *xdr, u64 *value) |
| 163 | { |
| 164 | __be32 *p; |
| 165 | |
| 166 | p = xdr_inline_decode(xdr, 8); |
| 167 | if (unlikely(p == NULL)) |
| 168 | goto out_overflow; |
| 169 | xdr_decode_hyper(p, value); |
| 170 | return 0; |
| 171 | out_overflow: |
| 172 | print_overflow_msg(__func__, xdr); |
| 173 | return -EIO; |
| 174 | } |
| 175 | |
| 176 | /* |
| 177 | * fileid3 |
| 178 | * |
| 179 | * typedef uint64 fileid3; |
| 180 | */ |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 181 | static __be32 *xdr_decode_fileid3(__be32 *p, u64 *fileid) |
| 182 | { |
| 183 | return xdr_decode_hyper(p, fileid); |
| 184 | } |
| 185 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 186 | static int decode_fileid3(struct xdr_stream *xdr, u64 *fileid) |
| 187 | { |
| 188 | return decode_uint64(xdr, fileid); |
| 189 | } |
| 190 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 191 | /* |
| 192 | * filename3 |
| 193 | * |
| 194 | * typedef string filename3<>; |
| 195 | */ |
| 196 | static void encode_filename3(struct xdr_stream *xdr, |
| 197 | const char *name, u32 length) |
| 198 | { |
| 199 | __be32 *p; |
| 200 | |
| 201 | BUG_ON(length > NFS3_MAXNAMLEN); |
| 202 | p = xdr_reserve_space(xdr, 4 + length); |
| 203 | xdr_encode_opaque(p, name, length); |
| 204 | } |
| 205 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 206 | static int decode_inline_filename3(struct xdr_stream *xdr, |
| 207 | const char **name, u32 *length) |
| 208 | { |
| 209 | __be32 *p; |
| 210 | u32 count; |
| 211 | |
| 212 | p = xdr_inline_decode(xdr, 4); |
| 213 | if (unlikely(p == NULL)) |
| 214 | goto out_overflow; |
| 215 | count = be32_to_cpup(p); |
| 216 | if (count > NFS3_MAXNAMLEN) |
| 217 | goto out_nametoolong; |
| 218 | p = xdr_inline_decode(xdr, count); |
| 219 | if (unlikely(p == NULL)) |
| 220 | goto out_overflow; |
| 221 | *name = (const char *)p; |
| 222 | *length = count; |
| 223 | return 0; |
| 224 | |
| 225 | out_nametoolong: |
| 226 | dprintk("NFS: returned filename too long: %u\n", count); |
| 227 | return -ENAMETOOLONG; |
| 228 | out_overflow: |
| 229 | print_overflow_msg(__func__, xdr); |
| 230 | return -EIO; |
| 231 | } |
| 232 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 233 | /* |
| 234 | * nfspath3 |
| 235 | * |
| 236 | * typedef string nfspath3<>; |
| 237 | */ |
| 238 | static void encode_nfspath3(struct xdr_stream *xdr, struct page **pages, |
| 239 | const u32 length) |
| 240 | { |
| 241 | BUG_ON(length > NFS3_MAXPATHLEN); |
| 242 | encode_uint32(xdr, length); |
| 243 | xdr_write_pages(xdr, pages, 0, length); |
| 244 | } |
| 245 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 246 | static int decode_nfspath3(struct xdr_stream *xdr) |
| 247 | { |
| 248 | u32 recvd, count; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 249 | __be32 *p; |
| 250 | |
| 251 | p = xdr_inline_decode(xdr, 4); |
| 252 | if (unlikely(p == NULL)) |
| 253 | goto out_overflow; |
| 254 | count = be32_to_cpup(p); |
| 255 | if (unlikely(count >= xdr->buf->page_len || count > NFS3_MAXPATHLEN)) |
| 256 | goto out_nametoolong; |
Trond Myklebust | 64bd577 | 2012-06-20 22:35:05 -0400 | [diff] [blame] | 257 | recvd = xdr_read_pages(xdr, count); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 258 | if (unlikely(count > recvd)) |
| 259 | goto out_cheating; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 260 | xdr_terminate_string(xdr->buf, count); |
| 261 | return 0; |
| 262 | |
| 263 | out_nametoolong: |
| 264 | dprintk("NFS: returned pathname too long: %u\n", count); |
| 265 | return -ENAMETOOLONG; |
| 266 | out_cheating: |
| 267 | dprintk("NFS: server cheating in pathname result: " |
| 268 | "count %u > recvd %u\n", count, recvd); |
| 269 | return -EIO; |
| 270 | out_overflow: |
| 271 | print_overflow_msg(__func__, xdr); |
| 272 | return -EIO; |
| 273 | } |
| 274 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 275 | /* |
| 276 | * cookie3 |
| 277 | * |
| 278 | * typedef uint64 cookie3 |
| 279 | */ |
| 280 | static __be32 *xdr_encode_cookie3(__be32 *p, u64 cookie) |
| 281 | { |
| 282 | return xdr_encode_hyper(p, cookie); |
| 283 | } |
| 284 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 285 | static int decode_cookie3(struct xdr_stream *xdr, u64 *cookie) |
| 286 | { |
| 287 | return decode_uint64(xdr, cookie); |
| 288 | } |
| 289 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 290 | /* |
| 291 | * cookieverf3 |
| 292 | * |
| 293 | * typedef opaque cookieverf3[NFS3_COOKIEVERFSIZE]; |
| 294 | */ |
| 295 | static __be32 *xdr_encode_cookieverf3(__be32 *p, const __be32 *verifier) |
| 296 | { |
| 297 | memcpy(p, verifier, NFS3_COOKIEVERFSIZE); |
| 298 | return p + XDR_QUADLEN(NFS3_COOKIEVERFSIZE); |
| 299 | } |
| 300 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 301 | static int decode_cookieverf3(struct xdr_stream *xdr, __be32 *verifier) |
| 302 | { |
| 303 | __be32 *p; |
| 304 | |
| 305 | p = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE); |
| 306 | if (unlikely(p == NULL)) |
| 307 | goto out_overflow; |
| 308 | memcpy(verifier, p, NFS3_COOKIEVERFSIZE); |
| 309 | return 0; |
| 310 | out_overflow: |
| 311 | print_overflow_msg(__func__, xdr); |
| 312 | return -EIO; |
| 313 | } |
| 314 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 315 | /* |
| 316 | * createverf3 |
| 317 | * |
| 318 | * typedef opaque createverf3[NFS3_CREATEVERFSIZE]; |
| 319 | */ |
| 320 | static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier) |
| 321 | { |
| 322 | __be32 *p; |
| 323 | |
| 324 | p = xdr_reserve_space(xdr, NFS3_CREATEVERFSIZE); |
| 325 | memcpy(p, verifier, NFS3_CREATEVERFSIZE); |
| 326 | } |
| 327 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 328 | static int decode_writeverf3(struct xdr_stream *xdr, __be32 *verifier) |
| 329 | { |
| 330 | __be32 *p; |
| 331 | |
| 332 | p = xdr_inline_decode(xdr, NFS3_WRITEVERFSIZE); |
| 333 | if (unlikely(p == NULL)) |
| 334 | goto out_overflow; |
| 335 | memcpy(verifier, p, NFS3_WRITEVERFSIZE); |
| 336 | return 0; |
| 337 | out_overflow: |
| 338 | print_overflow_msg(__func__, xdr); |
| 339 | return -EIO; |
| 340 | } |
| 341 | |
| 342 | /* |
| 343 | * size3 |
| 344 | * |
| 345 | * typedef uint64 size3; |
| 346 | */ |
| 347 | static __be32 *xdr_decode_size3(__be32 *p, u64 *size) |
| 348 | { |
| 349 | return xdr_decode_hyper(p, size); |
| 350 | } |
| 351 | |
| 352 | /* |
| 353 | * nfsstat3 |
| 354 | * |
| 355 | * enum nfsstat3 { |
| 356 | * NFS3_OK = 0, |
| 357 | * ... |
| 358 | * } |
| 359 | */ |
| 360 | #define NFS3_OK NFS_OK |
| 361 | |
| 362 | static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status) |
| 363 | { |
| 364 | __be32 *p; |
| 365 | |
| 366 | p = xdr_inline_decode(xdr, 4); |
| 367 | if (unlikely(p == NULL)) |
| 368 | goto out_overflow; |
| 369 | *status = be32_to_cpup(p); |
| 370 | return 0; |
| 371 | out_overflow: |
| 372 | print_overflow_msg(__func__, xdr); |
| 373 | return -EIO; |
| 374 | } |
| 375 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 376 | /* |
| 377 | * ftype3 |
| 378 | * |
| 379 | * enum ftype3 { |
| 380 | * NF3REG = 1, |
| 381 | * NF3DIR = 2, |
| 382 | * NF3BLK = 3, |
| 383 | * NF3CHR = 4, |
| 384 | * NF3LNK = 5, |
| 385 | * NF3SOCK = 6, |
| 386 | * NF3FIFO = 7 |
| 387 | * }; |
| 388 | */ |
| 389 | static void encode_ftype3(struct xdr_stream *xdr, const u32 type) |
| 390 | { |
| 391 | BUG_ON(type > NF3FIFO); |
| 392 | encode_uint32(xdr, type); |
| 393 | } |
| 394 | |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 395 | static __be32 *xdr_decode_ftype3(__be32 *p, umode_t *mode) |
| 396 | { |
| 397 | u32 type; |
| 398 | |
| 399 | type = be32_to_cpup(p++); |
| 400 | if (type > NF3FIFO) |
| 401 | type = NF3NON; |
| 402 | *mode = nfs_type2fmt[type]; |
| 403 | return p; |
| 404 | } |
| 405 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 406 | /* |
| 407 | * specdata3 |
| 408 | * |
| 409 | * struct specdata3 { |
| 410 | * uint32 specdata1; |
| 411 | * uint32 specdata2; |
| 412 | * }; |
| 413 | */ |
| 414 | static void encode_specdata3(struct xdr_stream *xdr, const dev_t rdev) |
| 415 | { |
| 416 | __be32 *p; |
| 417 | |
| 418 | p = xdr_reserve_space(xdr, 8); |
| 419 | *p++ = cpu_to_be32(MAJOR(rdev)); |
| 420 | *p = cpu_to_be32(MINOR(rdev)); |
| 421 | } |
| 422 | |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 423 | static __be32 *xdr_decode_specdata3(__be32 *p, dev_t *rdev) |
| 424 | { |
| 425 | unsigned int major, minor; |
| 426 | |
| 427 | major = be32_to_cpup(p++); |
| 428 | minor = be32_to_cpup(p++); |
| 429 | *rdev = MKDEV(major, minor); |
| 430 | if (MAJOR(*rdev) != major || MINOR(*rdev) != minor) |
| 431 | *rdev = 0; |
| 432 | return p; |
| 433 | } |
| 434 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 435 | /* |
| 436 | * nfs_fh3 |
| 437 | * |
| 438 | * struct nfs_fh3 { |
| 439 | * opaque data<NFS3_FHSIZE>; |
| 440 | * }; |
| 441 | */ |
| 442 | static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh) |
| 443 | { |
| 444 | __be32 *p; |
| 445 | |
| 446 | BUG_ON(fh->size > NFS3_FHSIZE); |
| 447 | p = xdr_reserve_space(xdr, 4 + fh->size); |
| 448 | xdr_encode_opaque(p, fh->data, fh->size); |
| 449 | } |
| 450 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 451 | static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) |
| 452 | { |
| 453 | u32 length; |
| 454 | __be32 *p; |
| 455 | |
| 456 | p = xdr_inline_decode(xdr, 4); |
| 457 | if (unlikely(p == NULL)) |
| 458 | goto out_overflow; |
| 459 | length = be32_to_cpup(p++); |
| 460 | if (unlikely(length > NFS3_FHSIZE)) |
| 461 | goto out_toobig; |
| 462 | p = xdr_inline_decode(xdr, length); |
| 463 | if (unlikely(p == NULL)) |
| 464 | goto out_overflow; |
| 465 | fh->size = length; |
| 466 | memcpy(fh->data, p, length); |
| 467 | return 0; |
| 468 | out_toobig: |
| 469 | dprintk("NFS: file handle size (%u) too big\n", length); |
| 470 | return -E2BIG; |
| 471 | out_overflow: |
| 472 | print_overflow_msg(__func__, xdr); |
| 473 | return -EIO; |
| 474 | } |
| 475 | |
| 476 | static void zero_nfs_fh3(struct nfs_fh *fh) |
| 477 | { |
| 478 | memset(fh, 0, sizeof(*fh)); |
| 479 | } |
| 480 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 481 | /* |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 482 | * nfstime3 |
| 483 | * |
| 484 | * struct nfstime3 { |
| 485 | * uint32 seconds; |
| 486 | * uint32 nseconds; |
| 487 | * }; |
| 488 | */ |
| 489 | static __be32 *xdr_encode_nfstime3(__be32 *p, const struct timespec *timep) |
| 490 | { |
| 491 | *p++ = cpu_to_be32(timep->tv_sec); |
| 492 | *p++ = cpu_to_be32(timep->tv_nsec); |
| 493 | return p; |
| 494 | } |
| 495 | |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 496 | static __be32 *xdr_decode_nfstime3(__be32 *p, struct timespec *timep) |
| 497 | { |
| 498 | timep->tv_sec = be32_to_cpup(p++); |
| 499 | timep->tv_nsec = be32_to_cpup(p++); |
| 500 | return p; |
| 501 | } |
| 502 | |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 503 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 504 | * sattr3 |
| 505 | * |
| 506 | * enum time_how { |
| 507 | * DONT_CHANGE = 0, |
| 508 | * SET_TO_SERVER_TIME = 1, |
| 509 | * SET_TO_CLIENT_TIME = 2 |
| 510 | * }; |
| 511 | * |
| 512 | * union set_mode3 switch (bool set_it) { |
| 513 | * case TRUE: |
| 514 | * mode3 mode; |
| 515 | * default: |
| 516 | * void; |
| 517 | * }; |
| 518 | * |
| 519 | * union set_uid3 switch (bool set_it) { |
| 520 | * case TRUE: |
| 521 | * uid3 uid; |
| 522 | * default: |
| 523 | * void; |
| 524 | * }; |
| 525 | * |
| 526 | * union set_gid3 switch (bool set_it) { |
| 527 | * case TRUE: |
| 528 | * gid3 gid; |
| 529 | * default: |
| 530 | * void; |
| 531 | * }; |
| 532 | * |
| 533 | * union set_size3 switch (bool set_it) { |
| 534 | * case TRUE: |
| 535 | * size3 size; |
| 536 | * default: |
| 537 | * void; |
| 538 | * }; |
| 539 | * |
| 540 | * union set_atime switch (time_how set_it) { |
| 541 | * case SET_TO_CLIENT_TIME: |
| 542 | * nfstime3 atime; |
| 543 | * default: |
| 544 | * void; |
| 545 | * }; |
| 546 | * |
| 547 | * union set_mtime switch (time_how set_it) { |
| 548 | * case SET_TO_CLIENT_TIME: |
| 549 | * nfstime3 mtime; |
| 550 | * default: |
| 551 | * void; |
| 552 | * }; |
| 553 | * |
| 554 | * struct sattr3 { |
| 555 | * set_mode3 mode; |
| 556 | * set_uid3 uid; |
| 557 | * set_gid3 gid; |
| 558 | * set_size3 size; |
| 559 | * set_atime atime; |
| 560 | * set_mtime mtime; |
| 561 | * }; |
| 562 | */ |
| 563 | static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr) |
| 564 | { |
| 565 | u32 nbytes; |
| 566 | __be32 *p; |
| 567 | |
| 568 | /* |
| 569 | * In order to make only a single xdr_reserve_space() call, |
| 570 | * pre-compute the total number of bytes to be reserved. |
| 571 | * Six boolean values, one for each set_foo field, are always |
| 572 | * present in the encoded result, so start there. |
| 573 | */ |
| 574 | nbytes = 6 * 4; |
| 575 | if (attr->ia_valid & ATTR_MODE) |
| 576 | nbytes += 4; |
| 577 | if (attr->ia_valid & ATTR_UID) |
| 578 | nbytes += 4; |
| 579 | if (attr->ia_valid & ATTR_GID) |
| 580 | nbytes += 4; |
| 581 | if (attr->ia_valid & ATTR_SIZE) |
| 582 | nbytes += 8; |
| 583 | if (attr->ia_valid & ATTR_ATIME_SET) |
| 584 | nbytes += 8; |
| 585 | if (attr->ia_valid & ATTR_MTIME_SET) |
| 586 | nbytes += 8; |
| 587 | p = xdr_reserve_space(xdr, nbytes); |
| 588 | |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 589 | if (attr->ia_valid & ATTR_MODE) { |
| 590 | *p++ = xdr_one; |
| 591 | *p++ = cpu_to_be32(attr->ia_mode & S_IALLUGO); |
| 592 | } else |
| 593 | *p++ = xdr_zero; |
| 594 | |
| 595 | if (attr->ia_valid & ATTR_UID) { |
| 596 | *p++ = xdr_one; |
| 597 | *p++ = cpu_to_be32(attr->ia_uid); |
| 598 | } else |
| 599 | *p++ = xdr_zero; |
| 600 | |
| 601 | if (attr->ia_valid & ATTR_GID) { |
| 602 | *p++ = xdr_one; |
| 603 | *p++ = cpu_to_be32(attr->ia_gid); |
| 604 | } else |
| 605 | *p++ = xdr_zero; |
| 606 | |
| 607 | if (attr->ia_valid & ATTR_SIZE) { |
| 608 | *p++ = xdr_one; |
| 609 | p = xdr_encode_hyper(p, (u64)attr->ia_size); |
| 610 | } else |
| 611 | *p++ = xdr_zero; |
| 612 | |
| 613 | if (attr->ia_valid & ATTR_ATIME_SET) { |
| 614 | *p++ = xdr_two; |
| 615 | p = xdr_encode_nfstime3(p, &attr->ia_atime); |
| 616 | } else if (attr->ia_valid & ATTR_ATIME) { |
| 617 | *p++ = xdr_one; |
| 618 | } else |
| 619 | *p++ = xdr_zero; |
| 620 | |
| 621 | if (attr->ia_valid & ATTR_MTIME_SET) { |
| 622 | *p++ = xdr_two; |
| 623 | xdr_encode_nfstime3(p, &attr->ia_mtime); |
| 624 | } else if (attr->ia_valid & ATTR_MTIME) { |
| 625 | *p = xdr_one; |
| 626 | } else |
| 627 | *p = xdr_zero; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 628 | } |
| 629 | |
| 630 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 631 | * fattr3 |
| 632 | * |
| 633 | * struct fattr3 { |
| 634 | * ftype3 type; |
| 635 | * mode3 mode; |
| 636 | * uint32 nlink; |
| 637 | * uid3 uid; |
| 638 | * gid3 gid; |
| 639 | * size3 size; |
| 640 | * size3 used; |
| 641 | * specdata3 rdev; |
| 642 | * uint64 fsid; |
| 643 | * fileid3 fileid; |
| 644 | * nfstime3 atime; |
| 645 | * nfstime3 mtime; |
| 646 | * nfstime3 ctime; |
| 647 | * }; |
| 648 | */ |
| 649 | static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr) |
| 650 | { |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 651 | umode_t fmode; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 652 | __be32 *p; |
| 653 | |
| 654 | p = xdr_inline_decode(xdr, NFS3_fattr_sz << 2); |
| 655 | if (unlikely(p == NULL)) |
| 656 | goto out_overflow; |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 657 | |
| 658 | p = xdr_decode_ftype3(p, &fmode); |
| 659 | |
| 660 | fattr->mode = (be32_to_cpup(p++) & ~S_IFMT) | fmode; |
| 661 | fattr->nlink = be32_to_cpup(p++); |
| 662 | fattr->uid = be32_to_cpup(p++); |
| 663 | fattr->gid = be32_to_cpup(p++); |
| 664 | |
| 665 | p = xdr_decode_size3(p, &fattr->size); |
| 666 | p = xdr_decode_size3(p, &fattr->du.nfs3.used); |
| 667 | p = xdr_decode_specdata3(p, &fattr->rdev); |
| 668 | |
| 669 | p = xdr_decode_hyper(p, &fattr->fsid.major); |
| 670 | fattr->fsid.minor = 0; |
| 671 | |
| 672 | p = xdr_decode_fileid3(p, &fattr->fileid); |
| 673 | p = xdr_decode_nfstime3(p, &fattr->atime); |
| 674 | p = xdr_decode_nfstime3(p, &fattr->mtime); |
| 675 | xdr_decode_nfstime3(p, &fattr->ctime); |
Trond Myklebust | 3a1556e | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 676 | fattr->change_attr = nfs_timespec_to_change_attr(&fattr->ctime); |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 677 | |
| 678 | fattr->valid |= NFS_ATTR_FATTR_V3; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 679 | return 0; |
| 680 | out_overflow: |
| 681 | print_overflow_msg(__func__, xdr); |
| 682 | return -EIO; |
| 683 | } |
| 684 | |
| 685 | /* |
| 686 | * post_op_attr |
| 687 | * |
| 688 | * union post_op_attr switch (bool attributes_follow) { |
| 689 | * case TRUE: |
| 690 | * fattr3 attributes; |
| 691 | * case FALSE: |
| 692 | * void; |
| 693 | * }; |
| 694 | */ |
| 695 | static int decode_post_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) |
| 696 | { |
| 697 | __be32 *p; |
| 698 | |
| 699 | p = xdr_inline_decode(xdr, 4); |
| 700 | if (unlikely(p == NULL)) |
| 701 | goto out_overflow; |
| 702 | if (*p != xdr_zero) |
| 703 | return decode_fattr3(xdr, fattr); |
| 704 | return 0; |
| 705 | out_overflow: |
| 706 | print_overflow_msg(__func__, xdr); |
| 707 | return -EIO; |
| 708 | } |
| 709 | |
| 710 | /* |
| 711 | * wcc_attr |
| 712 | * struct wcc_attr { |
| 713 | * size3 size; |
| 714 | * nfstime3 mtime; |
| 715 | * nfstime3 ctime; |
| 716 | * }; |
| 717 | */ |
| 718 | static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) |
| 719 | { |
| 720 | __be32 *p; |
| 721 | |
| 722 | p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2); |
| 723 | if (unlikely(p == NULL)) |
| 724 | goto out_overflow; |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 725 | |
| 726 | fattr->valid |= NFS_ATTR_FATTR_PRESIZE |
Trond Myklebust | 3a1556e | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 727 | | NFS_ATTR_FATTR_PRECHANGE |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 728 | | NFS_ATTR_FATTR_PREMTIME |
| 729 | | NFS_ATTR_FATTR_PRECTIME; |
| 730 | |
| 731 | p = xdr_decode_size3(p, &fattr->pre_size); |
| 732 | p = xdr_decode_nfstime3(p, &fattr->pre_mtime); |
| 733 | xdr_decode_nfstime3(p, &fattr->pre_ctime); |
Trond Myklebust | 3a1556e | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 734 | fattr->pre_change_attr = nfs_timespec_to_change_attr(&fattr->pre_ctime); |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 735 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 736 | return 0; |
| 737 | out_overflow: |
| 738 | print_overflow_msg(__func__, xdr); |
| 739 | return -EIO; |
| 740 | } |
| 741 | |
| 742 | /* |
| 743 | * pre_op_attr |
| 744 | * union pre_op_attr switch (bool attributes_follow) { |
| 745 | * case TRUE: |
| 746 | * wcc_attr attributes; |
| 747 | * case FALSE: |
| 748 | * void; |
| 749 | * }; |
| 750 | * |
| 751 | * wcc_data |
| 752 | * |
| 753 | * struct wcc_data { |
| 754 | * pre_op_attr before; |
| 755 | * post_op_attr after; |
| 756 | * }; |
| 757 | */ |
| 758 | static int decode_pre_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) |
| 759 | { |
| 760 | __be32 *p; |
| 761 | |
| 762 | p = xdr_inline_decode(xdr, 4); |
| 763 | if (unlikely(p == NULL)) |
| 764 | goto out_overflow; |
| 765 | if (*p != xdr_zero) |
| 766 | return decode_wcc_attr(xdr, fattr); |
| 767 | return 0; |
| 768 | out_overflow: |
| 769 | print_overflow_msg(__func__, xdr); |
| 770 | return -EIO; |
| 771 | } |
| 772 | |
| 773 | static int decode_wcc_data(struct xdr_stream *xdr, struct nfs_fattr *fattr) |
| 774 | { |
| 775 | int error; |
| 776 | |
| 777 | error = decode_pre_op_attr(xdr, fattr); |
| 778 | if (unlikely(error)) |
| 779 | goto out; |
| 780 | error = decode_post_op_attr(xdr, fattr); |
| 781 | out: |
| 782 | return error; |
| 783 | } |
| 784 | |
| 785 | /* |
| 786 | * post_op_fh3 |
| 787 | * |
| 788 | * union post_op_fh3 switch (bool handle_follows) { |
| 789 | * case TRUE: |
| 790 | * nfs_fh3 handle; |
| 791 | * case FALSE: |
| 792 | * void; |
| 793 | * }; |
| 794 | */ |
| 795 | static int decode_post_op_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) |
| 796 | { |
| 797 | __be32 *p = xdr_inline_decode(xdr, 4); |
| 798 | if (unlikely(p == NULL)) |
| 799 | goto out_overflow; |
| 800 | if (*p != xdr_zero) |
| 801 | return decode_nfs_fh3(xdr, fh); |
| 802 | zero_nfs_fh3(fh); |
| 803 | return 0; |
| 804 | out_overflow: |
| 805 | print_overflow_msg(__func__, xdr); |
| 806 | return -EIO; |
| 807 | } |
| 808 | |
| 809 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 810 | * diropargs3 |
| 811 | * |
| 812 | * struct diropargs3 { |
| 813 | * nfs_fh3 dir; |
| 814 | * filename3 name; |
| 815 | * }; |
| 816 | */ |
| 817 | static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh, |
| 818 | const char *name, u32 length) |
| 819 | { |
| 820 | encode_nfs_fh3(xdr, fh); |
| 821 | encode_filename3(xdr, name, length); |
| 822 | } |
| 823 | |
| 824 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | /* |
Chuck Lever | 499ff71 | 2010-12-14 14:56:10 +0000 | [diff] [blame] | 826 | * NFSv3 XDR encode functions |
| 827 | * |
| 828 | * NFSv3 argument types are defined in section 3.3 of RFC 1813: |
| 829 | * "NFS Version 3 Protocol Specification". |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | */ |
| 831 | |
| 832 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 833 | * 3.3.1 GETATTR3args |
| 834 | * |
| 835 | * struct GETATTR3args { |
| 836 | * nfs_fh3 object; |
| 837 | * }; |
| 838 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 839 | static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, |
| 840 | struct xdr_stream *xdr, |
| 841 | const struct nfs_fh *fh) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 842 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 843 | encode_nfs_fh3(xdr, fh); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 844 | } |
| 845 | |
| 846 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 847 | * 3.3.2 SETATTR3args |
| 848 | * |
| 849 | * union sattrguard3 switch (bool check) { |
| 850 | * case TRUE: |
| 851 | * nfstime3 obj_ctime; |
| 852 | * case FALSE: |
| 853 | * void; |
| 854 | * }; |
| 855 | * |
| 856 | * struct SETATTR3args { |
| 857 | * nfs_fh3 object; |
| 858 | * sattr3 new_attributes; |
| 859 | * sattrguard3 guard; |
| 860 | * }; |
| 861 | */ |
| 862 | static void encode_sattrguard3(struct xdr_stream *xdr, |
| 863 | const struct nfs3_sattrargs *args) |
| 864 | { |
| 865 | __be32 *p; |
| 866 | |
| 867 | if (args->guard) { |
| 868 | p = xdr_reserve_space(xdr, 4 + 8); |
| 869 | *p++ = xdr_one; |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 870 | xdr_encode_nfstime3(p, &args->guardtime); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 871 | } else { |
| 872 | p = xdr_reserve_space(xdr, 4); |
| 873 | *p = xdr_zero; |
| 874 | } |
| 875 | } |
| 876 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 877 | static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, |
| 878 | struct xdr_stream *xdr, |
| 879 | const struct nfs3_sattrargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 880 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 881 | encode_nfs_fh3(xdr, args->fh); |
| 882 | encode_sattr3(xdr, args->sattr); |
| 883 | encode_sattrguard3(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 884 | } |
| 885 | |
| 886 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 887 | * 3.3.3 LOOKUP3args |
| 888 | * |
| 889 | * struct LOOKUP3args { |
| 890 | * diropargs3 what; |
| 891 | * }; |
| 892 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 893 | static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, |
| 894 | struct xdr_stream *xdr, |
| 895 | const struct nfs3_diropargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 896 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 897 | encode_diropargs3(xdr, args->fh, args->name, args->len); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 898 | } |
| 899 | |
| 900 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 901 | * 3.3.4 ACCESS3args |
| 902 | * |
| 903 | * struct ACCESS3args { |
| 904 | * nfs_fh3 object; |
| 905 | * uint32 access; |
| 906 | * }; |
| 907 | */ |
| 908 | static void encode_access3args(struct xdr_stream *xdr, |
| 909 | const struct nfs3_accessargs *args) |
| 910 | { |
| 911 | encode_nfs_fh3(xdr, args->fh); |
| 912 | encode_uint32(xdr, args->access); |
| 913 | } |
| 914 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 915 | static void nfs3_xdr_enc_access3args(struct rpc_rqst *req, |
| 916 | struct xdr_stream *xdr, |
| 917 | const struct nfs3_accessargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 918 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 919 | encode_access3args(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 920 | } |
| 921 | |
| 922 | /* |
| 923 | * 3.3.5 READLINK3args |
| 924 | * |
| 925 | * struct READLINK3args { |
| 926 | * nfs_fh3 symlink; |
| 927 | * }; |
| 928 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 929 | static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, |
| 930 | struct xdr_stream *xdr, |
| 931 | const struct nfs3_readlinkargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 932 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 933 | encode_nfs_fh3(xdr, args->fh); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 934 | prepare_reply_buffer(req, args->pages, args->pgbase, |
| 935 | args->pglen, NFS3_readlinkres_sz); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 936 | } |
| 937 | |
| 938 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 939 | * 3.3.6 READ3args |
| 940 | * |
| 941 | * struct READ3args { |
| 942 | * nfs_fh3 file; |
| 943 | * offset3 offset; |
| 944 | * count3 count; |
| 945 | * }; |
| 946 | */ |
| 947 | static void encode_read3args(struct xdr_stream *xdr, |
| 948 | const struct nfs_readargs *args) |
| 949 | { |
| 950 | __be32 *p; |
| 951 | |
| 952 | encode_nfs_fh3(xdr, args->fh); |
| 953 | |
| 954 | p = xdr_reserve_space(xdr, 8 + 4); |
| 955 | p = xdr_encode_hyper(p, args->offset); |
| 956 | *p = cpu_to_be32(args->count); |
| 957 | } |
| 958 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 959 | static void nfs3_xdr_enc_read3args(struct rpc_rqst *req, |
| 960 | struct xdr_stream *xdr, |
| 961 | const struct nfs_readargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 962 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 963 | encode_read3args(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 964 | prepare_reply_buffer(req, args->pages, args->pgbase, |
| 965 | args->count, NFS3_readres_sz); |
| 966 | req->rq_rcv_buf.flags |= XDRBUF_READ; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 967 | } |
| 968 | |
| 969 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 970 | * 3.3.7 WRITE3args |
| 971 | * |
| 972 | * enum stable_how { |
| 973 | * UNSTABLE = 0, |
| 974 | * DATA_SYNC = 1, |
| 975 | * FILE_SYNC = 2 |
| 976 | * }; |
| 977 | * |
| 978 | * struct WRITE3args { |
| 979 | * nfs_fh3 file; |
| 980 | * offset3 offset; |
| 981 | * count3 count; |
| 982 | * stable_how stable; |
| 983 | * opaque data<>; |
| 984 | * }; |
| 985 | */ |
| 986 | static void encode_write3args(struct xdr_stream *xdr, |
| 987 | const struct nfs_writeargs *args) |
| 988 | { |
| 989 | __be32 *p; |
| 990 | |
| 991 | encode_nfs_fh3(xdr, args->fh); |
| 992 | |
| 993 | p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4); |
| 994 | p = xdr_encode_hyper(p, args->offset); |
| 995 | *p++ = cpu_to_be32(args->count); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 996 | *p++ = cpu_to_be32(args->stable); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 997 | *p = cpu_to_be32(args->count); |
| 998 | xdr_write_pages(xdr, args->pages, args->pgbase, args->count); |
| 999 | } |
| 1000 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1001 | static void nfs3_xdr_enc_write3args(struct rpc_rqst *req, |
| 1002 | struct xdr_stream *xdr, |
| 1003 | const struct nfs_writeargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1004 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1005 | encode_write3args(xdr, args); |
| 1006 | xdr->buf->flags |= XDRBUF_WRITE; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1007 | } |
| 1008 | |
| 1009 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1010 | * 3.3.8 CREATE3args |
| 1011 | * |
| 1012 | * enum createmode3 { |
| 1013 | * UNCHECKED = 0, |
| 1014 | * GUARDED = 1, |
| 1015 | * EXCLUSIVE = 2 |
| 1016 | * }; |
| 1017 | * |
| 1018 | * union createhow3 switch (createmode3 mode) { |
| 1019 | * case UNCHECKED: |
| 1020 | * case GUARDED: |
| 1021 | * sattr3 obj_attributes; |
| 1022 | * case EXCLUSIVE: |
| 1023 | * createverf3 verf; |
| 1024 | * }; |
| 1025 | * |
| 1026 | * struct CREATE3args { |
| 1027 | * diropargs3 where; |
| 1028 | * createhow3 how; |
| 1029 | * }; |
| 1030 | */ |
| 1031 | static void encode_createhow3(struct xdr_stream *xdr, |
| 1032 | const struct nfs3_createargs *args) |
| 1033 | { |
| 1034 | encode_uint32(xdr, args->createmode); |
| 1035 | switch (args->createmode) { |
| 1036 | case NFS3_CREATE_UNCHECKED: |
| 1037 | case NFS3_CREATE_GUARDED: |
| 1038 | encode_sattr3(xdr, args->sattr); |
| 1039 | break; |
| 1040 | case NFS3_CREATE_EXCLUSIVE: |
| 1041 | encode_createverf3(xdr, args->verifier); |
| 1042 | break; |
| 1043 | default: |
| 1044 | BUG(); |
| 1045 | } |
| 1046 | } |
| 1047 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1048 | static void nfs3_xdr_enc_create3args(struct rpc_rqst *req, |
| 1049 | struct xdr_stream *xdr, |
| 1050 | const struct nfs3_createargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1051 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1052 | encode_diropargs3(xdr, args->fh, args->name, args->len); |
| 1053 | encode_createhow3(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1054 | } |
| 1055 | |
| 1056 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1057 | * 3.3.9 MKDIR3args |
| 1058 | * |
| 1059 | * struct MKDIR3args { |
| 1060 | * diropargs3 where; |
| 1061 | * sattr3 attributes; |
| 1062 | * }; |
| 1063 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1064 | static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, |
| 1065 | struct xdr_stream *xdr, |
| 1066 | const struct nfs3_mkdirargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1067 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1068 | encode_diropargs3(xdr, args->fh, args->name, args->len); |
| 1069 | encode_sattr3(xdr, args->sattr); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1070 | } |
| 1071 | |
| 1072 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1073 | * 3.3.10 SYMLINK3args |
| 1074 | * |
| 1075 | * struct symlinkdata3 { |
| 1076 | * sattr3 symlink_attributes; |
| 1077 | * nfspath3 symlink_data; |
| 1078 | * }; |
| 1079 | * |
| 1080 | * struct SYMLINK3args { |
| 1081 | * diropargs3 where; |
| 1082 | * symlinkdata3 symlink; |
| 1083 | * }; |
| 1084 | */ |
| 1085 | static void encode_symlinkdata3(struct xdr_stream *xdr, |
| 1086 | const struct nfs3_symlinkargs *args) |
| 1087 | { |
| 1088 | encode_sattr3(xdr, args->sattr); |
| 1089 | encode_nfspath3(xdr, args->pages, args->pathlen); |
| 1090 | } |
| 1091 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1092 | static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, |
| 1093 | struct xdr_stream *xdr, |
| 1094 | const struct nfs3_symlinkargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1095 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1096 | encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen); |
| 1097 | encode_symlinkdata3(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1098 | } |
| 1099 | |
| 1100 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1101 | * 3.3.11 MKNOD3args |
| 1102 | * |
| 1103 | * struct devicedata3 { |
| 1104 | * sattr3 dev_attributes; |
| 1105 | * specdata3 spec; |
| 1106 | * }; |
| 1107 | * |
| 1108 | * union mknoddata3 switch (ftype3 type) { |
| 1109 | * case NF3CHR: |
| 1110 | * case NF3BLK: |
| 1111 | * devicedata3 device; |
| 1112 | * case NF3SOCK: |
| 1113 | * case NF3FIFO: |
| 1114 | * sattr3 pipe_attributes; |
| 1115 | * default: |
| 1116 | * void; |
| 1117 | * }; |
| 1118 | * |
| 1119 | * struct MKNOD3args { |
| 1120 | * diropargs3 where; |
| 1121 | * mknoddata3 what; |
| 1122 | * }; |
| 1123 | */ |
| 1124 | static void encode_devicedata3(struct xdr_stream *xdr, |
| 1125 | const struct nfs3_mknodargs *args) |
| 1126 | { |
| 1127 | encode_sattr3(xdr, args->sattr); |
| 1128 | encode_specdata3(xdr, args->rdev); |
| 1129 | } |
| 1130 | |
| 1131 | static void encode_mknoddata3(struct xdr_stream *xdr, |
| 1132 | const struct nfs3_mknodargs *args) |
| 1133 | { |
| 1134 | encode_ftype3(xdr, args->type); |
| 1135 | switch (args->type) { |
| 1136 | case NF3CHR: |
| 1137 | case NF3BLK: |
| 1138 | encode_devicedata3(xdr, args); |
| 1139 | break; |
| 1140 | case NF3SOCK: |
| 1141 | case NF3FIFO: |
| 1142 | encode_sattr3(xdr, args->sattr); |
| 1143 | break; |
| 1144 | case NF3REG: |
| 1145 | case NF3DIR: |
| 1146 | break; |
| 1147 | default: |
| 1148 | BUG(); |
| 1149 | } |
| 1150 | } |
| 1151 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1152 | static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, |
| 1153 | struct xdr_stream *xdr, |
| 1154 | const struct nfs3_mknodargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1155 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1156 | encode_diropargs3(xdr, args->fh, args->name, args->len); |
| 1157 | encode_mknoddata3(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1158 | } |
| 1159 | |
| 1160 | /* |
| 1161 | * 3.3.12 REMOVE3args |
| 1162 | * |
| 1163 | * struct REMOVE3args { |
| 1164 | * diropargs3 object; |
| 1165 | * }; |
| 1166 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1167 | static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req, |
| 1168 | struct xdr_stream *xdr, |
| 1169 | const struct nfs_removeargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1170 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1171 | encode_diropargs3(xdr, args->fh, args->name.name, args->name.len); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1172 | } |
| 1173 | |
| 1174 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1175 | * 3.3.14 RENAME3args |
| 1176 | * |
| 1177 | * struct RENAME3args { |
| 1178 | * diropargs3 from; |
| 1179 | * diropargs3 to; |
| 1180 | * }; |
| 1181 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1182 | static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req, |
| 1183 | struct xdr_stream *xdr, |
| 1184 | const struct nfs_renameargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1185 | { |
| 1186 | const struct qstr *old = args->old_name; |
| 1187 | const struct qstr *new = args->new_name; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1188 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1189 | encode_diropargs3(xdr, args->old_dir, old->name, old->len); |
| 1190 | encode_diropargs3(xdr, args->new_dir, new->name, new->len); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1191 | } |
| 1192 | |
| 1193 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1194 | * 3.3.15 LINK3args |
| 1195 | * |
| 1196 | * struct LINK3args { |
| 1197 | * nfs_fh3 file; |
| 1198 | * diropargs3 link; |
| 1199 | * }; |
| 1200 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1201 | static void nfs3_xdr_enc_link3args(struct rpc_rqst *req, |
| 1202 | struct xdr_stream *xdr, |
| 1203 | const struct nfs3_linkargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1204 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1205 | encode_nfs_fh3(xdr, args->fromfh); |
| 1206 | encode_diropargs3(xdr, args->tofh, args->toname, args->tolen); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1207 | } |
| 1208 | |
| 1209 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1210 | * 3.3.16 READDIR3args |
| 1211 | * |
| 1212 | * struct READDIR3args { |
| 1213 | * nfs_fh3 dir; |
| 1214 | * cookie3 cookie; |
| 1215 | * cookieverf3 cookieverf; |
| 1216 | * count3 count; |
| 1217 | * }; |
| 1218 | */ |
| 1219 | static void encode_readdir3args(struct xdr_stream *xdr, |
| 1220 | const struct nfs3_readdirargs *args) |
| 1221 | { |
| 1222 | __be32 *p; |
| 1223 | |
| 1224 | encode_nfs_fh3(xdr, args->fh); |
| 1225 | |
| 1226 | p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4); |
| 1227 | p = xdr_encode_cookie3(p, args->cookie); |
| 1228 | p = xdr_encode_cookieverf3(p, args->verf); |
| 1229 | *p = cpu_to_be32(args->count); |
| 1230 | } |
| 1231 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1232 | static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req, |
| 1233 | struct xdr_stream *xdr, |
| 1234 | const struct nfs3_readdirargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1235 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1236 | encode_readdir3args(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1237 | prepare_reply_buffer(req, args->pages, 0, |
| 1238 | args->count, NFS3_readdirres_sz); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1239 | } |
| 1240 | |
| 1241 | /* |
| 1242 | * 3.3.17 READDIRPLUS3args |
| 1243 | * |
| 1244 | * struct READDIRPLUS3args { |
| 1245 | * nfs_fh3 dir; |
| 1246 | * cookie3 cookie; |
| 1247 | * cookieverf3 cookieverf; |
| 1248 | * count3 dircount; |
| 1249 | * count3 maxcount; |
| 1250 | * }; |
| 1251 | */ |
| 1252 | static void encode_readdirplus3args(struct xdr_stream *xdr, |
| 1253 | const struct nfs3_readdirargs *args) |
| 1254 | { |
| 1255 | __be32 *p; |
| 1256 | |
| 1257 | encode_nfs_fh3(xdr, args->fh); |
| 1258 | |
| 1259 | p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4); |
| 1260 | p = xdr_encode_cookie3(p, args->cookie); |
| 1261 | p = xdr_encode_cookieverf3(p, args->verf); |
| 1262 | |
| 1263 | /* |
| 1264 | * readdirplus: need dircount + buffer size. |
| 1265 | * We just make sure we make dircount big enough |
| 1266 | */ |
| 1267 | *p++ = cpu_to_be32(args->count >> 3); |
| 1268 | |
| 1269 | *p = cpu_to_be32(args->count); |
| 1270 | } |
| 1271 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1272 | static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, |
| 1273 | struct xdr_stream *xdr, |
| 1274 | const struct nfs3_readdirargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1275 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1276 | encode_readdirplus3args(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1277 | prepare_reply_buffer(req, args->pages, 0, |
| 1278 | args->count, NFS3_readdirres_sz); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1279 | } |
| 1280 | |
| 1281 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1282 | * 3.3.21 COMMIT3args |
| 1283 | * |
| 1284 | * struct COMMIT3args { |
| 1285 | * nfs_fh3 file; |
| 1286 | * offset3 offset; |
| 1287 | * count3 count; |
| 1288 | * }; |
| 1289 | */ |
| 1290 | static void encode_commit3args(struct xdr_stream *xdr, |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 1291 | const struct nfs_commitargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1292 | { |
| 1293 | __be32 *p; |
| 1294 | |
| 1295 | encode_nfs_fh3(xdr, args->fh); |
| 1296 | |
| 1297 | p = xdr_reserve_space(xdr, 8 + 4); |
| 1298 | p = xdr_encode_hyper(p, args->offset); |
| 1299 | *p = cpu_to_be32(args->count); |
| 1300 | } |
| 1301 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1302 | static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req, |
| 1303 | struct xdr_stream *xdr, |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 1304 | const struct nfs_commitargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1305 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1306 | encode_commit3args(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1307 | } |
| 1308 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1309 | #ifdef CONFIG_NFS_V3_ACL |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1310 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1311 | static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, |
| 1312 | struct xdr_stream *xdr, |
| 1313 | const struct nfs3_getaclargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1314 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1315 | encode_nfs_fh3(xdr, args->fh); |
| 1316 | encode_uint32(xdr, args->mask); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1317 | if (args->mask & (NFS_ACL | NFS_DFACL)) |
| 1318 | prepare_reply_buffer(req, args->pages, 0, |
| 1319 | NFSACL_MAXPAGES << PAGE_SHIFT, |
| 1320 | ACL3_getaclres_sz); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1321 | } |
| 1322 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1323 | static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, |
| 1324 | struct xdr_stream *xdr, |
| 1325 | const struct nfs3_setaclargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1326 | { |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1327 | unsigned int base; |
| 1328 | int error; |
| 1329 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1330 | encode_nfs_fh3(xdr, NFS_FH(args->inode)); |
| 1331 | encode_uint32(xdr, args->mask); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1332 | |
| 1333 | base = req->rq_slen; |
Chuck Lever | ee5dc77 | 2011-01-21 03:05:18 +0000 | [diff] [blame] | 1334 | if (args->npages != 0) |
| 1335 | xdr_write_pages(xdr, args->pages, 0, args->len); |
| 1336 | else |
| 1337 | xdr_reserve_space(xdr, NFS_ACL_INLINE_BUFSIZE); |
| 1338 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1339 | error = nfsacl_encode(xdr->buf, base, args->inode, |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1340 | (args->mask & NFS_ACL) ? |
| 1341 | args->acl_access : NULL, 1, 0); |
| 1342 | BUG_ON(error < 0); |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1343 | error = nfsacl_encode(xdr->buf, base + error, args->inode, |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1344 | (args->mask & NFS_DFACL) ? |
| 1345 | args->acl_default : NULL, 1, |
| 1346 | NFS_ACL_DEFAULT); |
| 1347 | BUG_ON(error < 0); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1348 | } |
| 1349 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1350 | #endif /* CONFIG_NFS_V3_ACL */ |
| 1351 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | /* |
Chuck Lever | b2cdd9c | 2010-12-14 14:56:52 +0000 | [diff] [blame] | 1353 | * NFSv3 XDR decode functions |
| 1354 | * |
| 1355 | * NFSv3 result types are defined in section 3.3 of RFC 1813: |
| 1356 | * "NFS Version 3 Protocol Specification". |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | */ |
| 1358 | |
| 1359 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1360 | * 3.3.1 GETATTR3res |
| 1361 | * |
| 1362 | * struct GETATTR3resok { |
| 1363 | * fattr3 obj_attributes; |
| 1364 | * }; |
| 1365 | * |
| 1366 | * union GETATTR3res switch (nfsstat3 status) { |
| 1367 | * case NFS3_OK: |
| 1368 | * GETATTR3resok resok; |
| 1369 | * default: |
| 1370 | * void; |
| 1371 | * }; |
| 1372 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1373 | static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req, |
| 1374 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1375 | struct nfs_fattr *result) |
| 1376 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1377 | enum nfs_stat status; |
| 1378 | int error; |
| 1379 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1380 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1381 | if (unlikely(error)) |
| 1382 | goto out; |
| 1383 | if (status != NFS3_OK) |
| 1384 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1385 | error = decode_fattr3(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1386 | out: |
| 1387 | return error; |
| 1388 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1389 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1390 | } |
| 1391 | |
| 1392 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1393 | * 3.3.2 SETATTR3res |
| 1394 | * |
| 1395 | * struct SETATTR3resok { |
| 1396 | * wcc_data obj_wcc; |
| 1397 | * }; |
| 1398 | * |
| 1399 | * struct SETATTR3resfail { |
| 1400 | * wcc_data obj_wcc; |
| 1401 | * }; |
| 1402 | * |
| 1403 | * union SETATTR3res switch (nfsstat3 status) { |
| 1404 | * case NFS3_OK: |
| 1405 | * SETATTR3resok resok; |
| 1406 | * default: |
| 1407 | * SETATTR3resfail resfail; |
| 1408 | * }; |
| 1409 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1410 | static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req, |
| 1411 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1412 | struct nfs_fattr *result) |
| 1413 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1414 | enum nfs_stat status; |
| 1415 | int error; |
| 1416 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1417 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1418 | if (unlikely(error)) |
| 1419 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1420 | error = decode_wcc_data(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1421 | if (unlikely(error)) |
| 1422 | goto out; |
| 1423 | if (status != NFS3_OK) |
| 1424 | goto out_status; |
| 1425 | out: |
| 1426 | return error; |
| 1427 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1428 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1429 | } |
| 1430 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1432 | * 3.3.3 LOOKUP3res |
| 1433 | * |
| 1434 | * struct LOOKUP3resok { |
| 1435 | * nfs_fh3 object; |
| 1436 | * post_op_attr obj_attributes; |
| 1437 | * post_op_attr dir_attributes; |
| 1438 | * }; |
| 1439 | * |
| 1440 | * struct LOOKUP3resfail { |
| 1441 | * post_op_attr dir_attributes; |
| 1442 | * }; |
| 1443 | * |
| 1444 | * union LOOKUP3res switch (nfsstat3 status) { |
| 1445 | * case NFS3_OK: |
| 1446 | * LOOKUP3resok resok; |
| 1447 | * default: |
| 1448 | * LOOKUP3resfail resfail; |
| 1449 | * }; |
| 1450 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1451 | static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req, |
| 1452 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1453 | struct nfs3_diropres *result) |
| 1454 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1455 | enum nfs_stat status; |
| 1456 | int error; |
| 1457 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1458 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1459 | if (unlikely(error)) |
| 1460 | goto out; |
| 1461 | if (status != NFS3_OK) |
| 1462 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1463 | error = decode_nfs_fh3(xdr, result->fh); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1464 | if (unlikely(error)) |
| 1465 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1466 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1467 | if (unlikely(error)) |
| 1468 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1469 | error = decode_post_op_attr(xdr, result->dir_attr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1470 | out: |
| 1471 | return error; |
| 1472 | out_default: |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1473 | error = decode_post_op_attr(xdr, result->dir_attr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1474 | if (unlikely(error)) |
| 1475 | goto out; |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1476 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1477 | } |
| 1478 | |
| 1479 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1480 | * 3.3.4 ACCESS3res |
| 1481 | * |
| 1482 | * struct ACCESS3resok { |
| 1483 | * post_op_attr obj_attributes; |
| 1484 | * uint32 access; |
| 1485 | * }; |
| 1486 | * |
| 1487 | * struct ACCESS3resfail { |
| 1488 | * post_op_attr obj_attributes; |
| 1489 | * }; |
| 1490 | * |
| 1491 | * union ACCESS3res switch (nfsstat3 status) { |
| 1492 | * case NFS3_OK: |
| 1493 | * ACCESS3resok resok; |
| 1494 | * default: |
| 1495 | * ACCESS3resfail resfail; |
| 1496 | * }; |
| 1497 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1498 | static int nfs3_xdr_dec_access3res(struct rpc_rqst *req, |
| 1499 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1500 | struct nfs3_accessres *result) |
| 1501 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1502 | enum nfs_stat status; |
| 1503 | int error; |
| 1504 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1505 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1506 | if (unlikely(error)) |
| 1507 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1508 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1509 | if (unlikely(error)) |
| 1510 | goto out; |
| 1511 | if (status != NFS3_OK) |
| 1512 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1513 | error = decode_uint32(xdr, &result->access); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1514 | out: |
| 1515 | return error; |
| 1516 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1517 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1518 | } |
| 1519 | |
| 1520 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1521 | * 3.3.5 READLINK3res |
| 1522 | * |
| 1523 | * struct READLINK3resok { |
| 1524 | * post_op_attr symlink_attributes; |
| 1525 | * nfspath3 data; |
| 1526 | * }; |
| 1527 | * |
| 1528 | * struct READLINK3resfail { |
| 1529 | * post_op_attr symlink_attributes; |
| 1530 | * }; |
| 1531 | * |
| 1532 | * union READLINK3res switch (nfsstat3 status) { |
| 1533 | * case NFS3_OK: |
| 1534 | * READLINK3resok resok; |
| 1535 | * default: |
| 1536 | * READLINK3resfail resfail; |
| 1537 | * }; |
| 1538 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1539 | static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req, |
| 1540 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1541 | struct nfs_fattr *result) |
| 1542 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1543 | enum nfs_stat status; |
| 1544 | int error; |
| 1545 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1546 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1547 | if (unlikely(error)) |
| 1548 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1549 | error = decode_post_op_attr(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1550 | if (unlikely(error)) |
| 1551 | goto out; |
| 1552 | if (status != NFS3_OK) |
| 1553 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1554 | error = decode_nfspath3(xdr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1555 | out: |
| 1556 | return error; |
| 1557 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1558 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1559 | } |
| 1560 | |
| 1561 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1562 | * 3.3.6 READ3res |
| 1563 | * |
| 1564 | * struct READ3resok { |
| 1565 | * post_op_attr file_attributes; |
| 1566 | * count3 count; |
| 1567 | * bool eof; |
| 1568 | * opaque data<>; |
| 1569 | * }; |
| 1570 | * |
| 1571 | * struct READ3resfail { |
| 1572 | * post_op_attr file_attributes; |
| 1573 | * }; |
| 1574 | * |
| 1575 | * union READ3res switch (nfsstat3 status) { |
| 1576 | * case NFS3_OK: |
| 1577 | * READ3resok resok; |
| 1578 | * default: |
| 1579 | * READ3resfail resfail; |
| 1580 | * }; |
| 1581 | */ |
| 1582 | static int decode_read3resok(struct xdr_stream *xdr, |
| 1583 | struct nfs_readres *result) |
| 1584 | { |
| 1585 | u32 eof, count, ocount, recvd; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1586 | __be32 *p; |
| 1587 | |
| 1588 | p = xdr_inline_decode(xdr, 4 + 4 + 4); |
| 1589 | if (unlikely(p == NULL)) |
| 1590 | goto out_overflow; |
| 1591 | count = be32_to_cpup(p++); |
| 1592 | eof = be32_to_cpup(p++); |
| 1593 | ocount = be32_to_cpup(p++); |
| 1594 | if (unlikely(ocount != count)) |
| 1595 | goto out_mismatch; |
Trond Myklebust | 64bd577 | 2012-06-20 22:35:05 -0400 | [diff] [blame] | 1596 | recvd = xdr_read_pages(xdr, count); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1597 | if (unlikely(count > recvd)) |
| 1598 | goto out_cheating; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1599 | out: |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1600 | result->eof = eof; |
| 1601 | result->count = count; |
| 1602 | return count; |
| 1603 | out_mismatch: |
| 1604 | dprintk("NFS: READ count doesn't match length of opaque: " |
| 1605 | "count %u != ocount %u\n", count, ocount); |
| 1606 | return -EIO; |
| 1607 | out_cheating: |
| 1608 | dprintk("NFS: server cheating in read result: " |
| 1609 | "count %u > recvd %u\n", count, recvd); |
| 1610 | count = recvd; |
| 1611 | eof = 0; |
| 1612 | goto out; |
| 1613 | out_overflow: |
| 1614 | print_overflow_msg(__func__, xdr); |
| 1615 | return -EIO; |
| 1616 | } |
| 1617 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1618 | static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1619 | struct nfs_readres *result) |
| 1620 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1621 | enum nfs_stat status; |
| 1622 | int error; |
| 1623 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1624 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1625 | if (unlikely(error)) |
| 1626 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1627 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1628 | if (unlikely(error)) |
| 1629 | goto out; |
| 1630 | if (status != NFS3_OK) |
| 1631 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1632 | error = decode_read3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1633 | out: |
| 1634 | return error; |
| 1635 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1636 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1637 | } |
| 1638 | |
| 1639 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1640 | * 3.3.7 WRITE3res |
| 1641 | * |
| 1642 | * enum stable_how { |
| 1643 | * UNSTABLE = 0, |
| 1644 | * DATA_SYNC = 1, |
| 1645 | * FILE_SYNC = 2 |
| 1646 | * }; |
| 1647 | * |
| 1648 | * struct WRITE3resok { |
| 1649 | * wcc_data file_wcc; |
| 1650 | * count3 count; |
| 1651 | * stable_how committed; |
| 1652 | * writeverf3 verf; |
| 1653 | * }; |
| 1654 | * |
| 1655 | * struct WRITE3resfail { |
| 1656 | * wcc_data file_wcc; |
| 1657 | * }; |
| 1658 | * |
| 1659 | * union WRITE3res switch (nfsstat3 status) { |
| 1660 | * case NFS3_OK: |
| 1661 | * WRITE3resok resok; |
| 1662 | * default: |
| 1663 | * WRITE3resfail resfail; |
| 1664 | * }; |
| 1665 | */ |
| 1666 | static int decode_write3resok(struct xdr_stream *xdr, |
| 1667 | struct nfs_writeres *result) |
| 1668 | { |
| 1669 | __be32 *p; |
| 1670 | |
| 1671 | p = xdr_inline_decode(xdr, 4 + 4 + NFS3_WRITEVERFSIZE); |
| 1672 | if (unlikely(p == NULL)) |
| 1673 | goto out_overflow; |
| 1674 | result->count = be32_to_cpup(p++); |
| 1675 | result->verf->committed = be32_to_cpup(p++); |
| 1676 | if (unlikely(result->verf->committed > NFS_FILE_SYNC)) |
| 1677 | goto out_badvalue; |
| 1678 | memcpy(result->verf->verifier, p, NFS3_WRITEVERFSIZE); |
| 1679 | return result->count; |
| 1680 | out_badvalue: |
| 1681 | dprintk("NFS: bad stable_how value: %u\n", result->verf->committed); |
| 1682 | return -EIO; |
| 1683 | out_overflow: |
| 1684 | print_overflow_msg(__func__, xdr); |
| 1685 | return -EIO; |
| 1686 | } |
| 1687 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1688 | static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1689 | struct nfs_writeres *result) |
| 1690 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1691 | enum nfs_stat status; |
| 1692 | int error; |
| 1693 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1694 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1695 | if (unlikely(error)) |
| 1696 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1697 | error = decode_wcc_data(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1698 | if (unlikely(error)) |
| 1699 | goto out; |
| 1700 | if (status != NFS3_OK) |
| 1701 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1702 | error = decode_write3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1703 | out: |
| 1704 | return error; |
| 1705 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1706 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1707 | } |
| 1708 | |
| 1709 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1710 | * 3.3.8 CREATE3res |
| 1711 | * |
| 1712 | * struct CREATE3resok { |
| 1713 | * post_op_fh3 obj; |
| 1714 | * post_op_attr obj_attributes; |
| 1715 | * wcc_data dir_wcc; |
| 1716 | * }; |
| 1717 | * |
| 1718 | * struct CREATE3resfail { |
| 1719 | * wcc_data dir_wcc; |
| 1720 | * }; |
| 1721 | * |
| 1722 | * union CREATE3res switch (nfsstat3 status) { |
| 1723 | * case NFS3_OK: |
| 1724 | * CREATE3resok resok; |
| 1725 | * default: |
| 1726 | * CREATE3resfail resfail; |
| 1727 | * }; |
| 1728 | */ |
| 1729 | static int decode_create3resok(struct xdr_stream *xdr, |
| 1730 | struct nfs3_diropres *result) |
| 1731 | { |
| 1732 | int error; |
| 1733 | |
| 1734 | error = decode_post_op_fh3(xdr, result->fh); |
| 1735 | if (unlikely(error)) |
| 1736 | goto out; |
| 1737 | error = decode_post_op_attr(xdr, result->fattr); |
| 1738 | if (unlikely(error)) |
| 1739 | goto out; |
| 1740 | /* The server isn't required to return a file handle. |
| 1741 | * If it didn't, force the client to perform a LOOKUP |
| 1742 | * to determine the correct file handle and attribute |
| 1743 | * values for the new object. */ |
| 1744 | if (result->fh->size == 0) |
| 1745 | result->fattr->valid = 0; |
| 1746 | error = decode_wcc_data(xdr, result->dir_attr); |
| 1747 | out: |
| 1748 | return error; |
| 1749 | } |
| 1750 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1751 | static int nfs3_xdr_dec_create3res(struct rpc_rqst *req, |
| 1752 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1753 | struct nfs3_diropres *result) |
| 1754 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1755 | enum nfs_stat status; |
| 1756 | int error; |
| 1757 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1758 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1759 | if (unlikely(error)) |
| 1760 | goto out; |
| 1761 | if (status != NFS3_OK) |
| 1762 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1763 | error = decode_create3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1764 | out: |
| 1765 | return error; |
| 1766 | out_default: |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1767 | error = decode_wcc_data(xdr, result->dir_attr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1768 | if (unlikely(error)) |
| 1769 | goto out; |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1770 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1771 | } |
| 1772 | |
| 1773 | /* |
| 1774 | * 3.3.12 REMOVE3res |
| 1775 | * |
| 1776 | * struct REMOVE3resok { |
| 1777 | * wcc_data dir_wcc; |
| 1778 | * }; |
| 1779 | * |
| 1780 | * struct REMOVE3resfail { |
| 1781 | * wcc_data dir_wcc; |
| 1782 | * }; |
| 1783 | * |
| 1784 | * union REMOVE3res switch (nfsstat3 status) { |
| 1785 | * case NFS3_OK: |
| 1786 | * REMOVE3resok resok; |
| 1787 | * default: |
| 1788 | * REMOVE3resfail resfail; |
| 1789 | * }; |
| 1790 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1791 | static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req, |
| 1792 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1793 | struct nfs_removeres *result) |
| 1794 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1795 | enum nfs_stat status; |
| 1796 | int error; |
| 1797 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1798 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1799 | if (unlikely(error)) |
| 1800 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1801 | error = decode_wcc_data(xdr, result->dir_attr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1802 | if (unlikely(error)) |
| 1803 | goto out; |
| 1804 | if (status != NFS3_OK) |
| 1805 | goto out_status; |
| 1806 | out: |
| 1807 | return error; |
| 1808 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1809 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1810 | } |
| 1811 | |
| 1812 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1813 | * 3.3.14 RENAME3res |
| 1814 | * |
| 1815 | * struct RENAME3resok { |
| 1816 | * wcc_data fromdir_wcc; |
| 1817 | * wcc_data todir_wcc; |
| 1818 | * }; |
| 1819 | * |
| 1820 | * struct RENAME3resfail { |
| 1821 | * wcc_data fromdir_wcc; |
| 1822 | * wcc_data todir_wcc; |
| 1823 | * }; |
| 1824 | * |
| 1825 | * union RENAME3res switch (nfsstat3 status) { |
| 1826 | * case NFS3_OK: |
| 1827 | * RENAME3resok resok; |
| 1828 | * default: |
| 1829 | * RENAME3resfail resfail; |
| 1830 | * }; |
| 1831 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1832 | static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req, |
| 1833 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1834 | struct nfs_renameres *result) |
| 1835 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1836 | enum nfs_stat status; |
| 1837 | int error; |
| 1838 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1839 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1840 | if (unlikely(error)) |
| 1841 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1842 | error = decode_wcc_data(xdr, result->old_fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1843 | if (unlikely(error)) |
| 1844 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1845 | error = decode_wcc_data(xdr, result->new_fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1846 | if (unlikely(error)) |
| 1847 | goto out; |
| 1848 | if (status != NFS3_OK) |
| 1849 | goto out_status; |
| 1850 | out: |
| 1851 | return error; |
| 1852 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1853 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1854 | } |
| 1855 | |
| 1856 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1857 | * 3.3.15 LINK3res |
| 1858 | * |
| 1859 | * struct LINK3resok { |
| 1860 | * post_op_attr file_attributes; |
| 1861 | * wcc_data linkdir_wcc; |
| 1862 | * }; |
| 1863 | * |
| 1864 | * struct LINK3resfail { |
| 1865 | * post_op_attr file_attributes; |
| 1866 | * wcc_data linkdir_wcc; |
| 1867 | * }; |
| 1868 | * |
| 1869 | * union LINK3res switch (nfsstat3 status) { |
| 1870 | * case NFS3_OK: |
| 1871 | * LINK3resok resok; |
| 1872 | * default: |
| 1873 | * LINK3resfail resfail; |
| 1874 | * }; |
| 1875 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1876 | static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1877 | struct nfs3_linkres *result) |
| 1878 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1879 | enum nfs_stat status; |
| 1880 | int error; |
| 1881 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1882 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1883 | if (unlikely(error)) |
| 1884 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1885 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1886 | if (unlikely(error)) |
| 1887 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1888 | error = decode_wcc_data(xdr, result->dir_attr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1889 | if (unlikely(error)) |
| 1890 | goto out; |
| 1891 | if (status != NFS3_OK) |
| 1892 | goto out_status; |
| 1893 | out: |
| 1894 | return error; |
| 1895 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1896 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1897 | } |
| 1898 | |
| 1899 | /** |
| 1900 | * nfs3_decode_dirent - Decode a single NFSv3 directory entry stored in |
| 1901 | * the local page cache |
| 1902 | * @xdr: XDR stream where entry resides |
| 1903 | * @entry: buffer to fill in with entry data |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1904 | * @plus: boolean indicating whether this should be a readdirplus entry |
| 1905 | * |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1906 | * Returns zero if successful, otherwise a negative errno value is |
| 1907 | * returned. |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1908 | * |
| 1909 | * This function is not invoked during READDIR reply decoding, but |
| 1910 | * rather whenever an application invokes the getdents(2) system call |
| 1911 | * on a directory already in our cache. |
| 1912 | * |
| 1913 | * 3.3.16 entry3 |
| 1914 | * |
| 1915 | * struct entry3 { |
| 1916 | * fileid3 fileid; |
| 1917 | * filename3 name; |
| 1918 | * cookie3 cookie; |
| 1919 | * fhandle3 filehandle; |
| 1920 | * post_op_attr3 attributes; |
| 1921 | * entry3 *nextentry; |
| 1922 | * }; |
| 1923 | * |
| 1924 | * 3.3.17 entryplus3 |
| 1925 | * struct entryplus3 { |
| 1926 | * fileid3 fileid; |
| 1927 | * filename3 name; |
| 1928 | * cookie3 cookie; |
| 1929 | * post_op_attr name_attributes; |
| 1930 | * post_op_fh3 name_handle; |
| 1931 | * entryplus3 *nextentry; |
| 1932 | * }; |
| 1933 | */ |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1934 | int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, |
| 1935 | int plus) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1936 | { |
| 1937 | struct nfs_entry old = *entry; |
| 1938 | __be32 *p; |
| 1939 | int error; |
| 1940 | |
| 1941 | p = xdr_inline_decode(xdr, 4); |
| 1942 | if (unlikely(p == NULL)) |
| 1943 | goto out_overflow; |
| 1944 | if (*p == xdr_zero) { |
| 1945 | p = xdr_inline_decode(xdr, 4); |
| 1946 | if (unlikely(p == NULL)) |
| 1947 | goto out_overflow; |
| 1948 | if (*p == xdr_zero) |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1949 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1950 | entry->eof = 1; |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1951 | return -EBADCOOKIE; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1952 | } |
| 1953 | |
| 1954 | error = decode_fileid3(xdr, &entry->ino); |
| 1955 | if (unlikely(error)) |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1956 | return error; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1957 | |
| 1958 | error = decode_inline_filename3(xdr, &entry->name, &entry->len); |
| 1959 | if (unlikely(error)) |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1960 | return error; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1961 | |
| 1962 | entry->prev_cookie = entry->cookie; |
| 1963 | error = decode_cookie3(xdr, &entry->cookie); |
| 1964 | if (unlikely(error)) |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1965 | return error; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1966 | |
| 1967 | entry->d_type = DT_UNKNOWN; |
| 1968 | |
| 1969 | if (plus) { |
| 1970 | entry->fattr->valid = 0; |
| 1971 | error = decode_post_op_attr(xdr, entry->fattr); |
| 1972 | if (unlikely(error)) |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1973 | return error; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1974 | if (entry->fattr->valid & NFS_ATTR_FATTR_V3) |
| 1975 | entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); |
| 1976 | |
| 1977 | /* In fact, a post_op_fh3: */ |
| 1978 | p = xdr_inline_decode(xdr, 4); |
| 1979 | if (unlikely(p == NULL)) |
| 1980 | goto out_overflow; |
| 1981 | if (*p != xdr_zero) { |
| 1982 | error = decode_nfs_fh3(xdr, entry->fh); |
| 1983 | if (unlikely(error)) { |
| 1984 | if (error == -E2BIG) |
| 1985 | goto out_truncated; |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1986 | return error; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1987 | } |
| 1988 | } else |
| 1989 | zero_nfs_fh3(entry->fh); |
| 1990 | } |
| 1991 | |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1992 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1993 | |
| 1994 | out_overflow: |
| 1995 | print_overflow_msg(__func__, xdr); |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1996 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1997 | out_truncated: |
| 1998 | dprintk("NFS: directory entry contains invalid file handle\n"); |
| 1999 | *entry = old; |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 2000 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2001 | } |
| 2002 | |
| 2003 | /* |
| 2004 | * 3.3.16 READDIR3res |
| 2005 | * |
| 2006 | * struct dirlist3 { |
| 2007 | * entry3 *entries; |
| 2008 | * bool eof; |
| 2009 | * }; |
| 2010 | * |
| 2011 | * struct READDIR3resok { |
| 2012 | * post_op_attr dir_attributes; |
| 2013 | * cookieverf3 cookieverf; |
| 2014 | * dirlist3 reply; |
| 2015 | * }; |
| 2016 | * |
| 2017 | * struct READDIR3resfail { |
| 2018 | * post_op_attr dir_attributes; |
| 2019 | * }; |
| 2020 | * |
| 2021 | * union READDIR3res switch (nfsstat3 status) { |
| 2022 | * case NFS3_OK: |
| 2023 | * READDIR3resok resok; |
| 2024 | * default: |
| 2025 | * READDIR3resfail resfail; |
| 2026 | * }; |
| 2027 | * |
| 2028 | * Read the directory contents into the page cache, but otherwise |
| 2029 | * don't touch them. The actual decoding is done by nfs3_decode_entry() |
| 2030 | * during subsequent nfs_readdir() calls. |
| 2031 | */ |
| 2032 | static int decode_dirlist3(struct xdr_stream *xdr) |
| 2033 | { |
Trond Myklebust | 64bd577 | 2012-06-20 22:35:05 -0400 | [diff] [blame] | 2034 | return xdr_read_pages(xdr, xdr->buf->page_len); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2035 | } |
| 2036 | |
| 2037 | static int decode_readdir3resok(struct xdr_stream *xdr, |
| 2038 | struct nfs3_readdirres *result) |
| 2039 | { |
| 2040 | int error; |
| 2041 | |
| 2042 | error = decode_post_op_attr(xdr, result->dir_attr); |
| 2043 | if (unlikely(error)) |
| 2044 | goto out; |
| 2045 | /* XXX: do we need to check if result->verf != NULL ? */ |
| 2046 | error = decode_cookieverf3(xdr, result->verf); |
| 2047 | if (unlikely(error)) |
| 2048 | goto out; |
| 2049 | error = decode_dirlist3(xdr); |
| 2050 | out: |
| 2051 | return error; |
| 2052 | } |
| 2053 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2054 | static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req, |
| 2055 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2056 | struct nfs3_readdirres *result) |
| 2057 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2058 | enum nfs_stat status; |
| 2059 | int error; |
| 2060 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2061 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2062 | if (unlikely(error)) |
| 2063 | goto out; |
| 2064 | if (status != NFS3_OK) |
| 2065 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2066 | error = decode_readdir3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2067 | out: |
| 2068 | return error; |
| 2069 | out_default: |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2070 | error = decode_post_op_attr(xdr, result->dir_attr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2071 | if (unlikely(error)) |
| 2072 | goto out; |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2073 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2074 | } |
| 2075 | |
| 2076 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2077 | * 3.3.18 FSSTAT3res |
| 2078 | * |
| 2079 | * struct FSSTAT3resok { |
| 2080 | * post_op_attr obj_attributes; |
| 2081 | * size3 tbytes; |
| 2082 | * size3 fbytes; |
| 2083 | * size3 abytes; |
| 2084 | * size3 tfiles; |
| 2085 | * size3 ffiles; |
| 2086 | * size3 afiles; |
| 2087 | * uint32 invarsec; |
| 2088 | * }; |
| 2089 | * |
| 2090 | * struct FSSTAT3resfail { |
| 2091 | * post_op_attr obj_attributes; |
| 2092 | * }; |
| 2093 | * |
| 2094 | * union FSSTAT3res switch (nfsstat3 status) { |
| 2095 | * case NFS3_OK: |
| 2096 | * FSSTAT3resok resok; |
| 2097 | * default: |
| 2098 | * FSSTAT3resfail resfail; |
| 2099 | * }; |
| 2100 | */ |
| 2101 | static int decode_fsstat3resok(struct xdr_stream *xdr, |
| 2102 | struct nfs_fsstat *result) |
| 2103 | { |
| 2104 | __be32 *p; |
| 2105 | |
| 2106 | p = xdr_inline_decode(xdr, 8 * 6 + 4); |
| 2107 | if (unlikely(p == NULL)) |
| 2108 | goto out_overflow; |
| 2109 | p = xdr_decode_size3(p, &result->tbytes); |
| 2110 | p = xdr_decode_size3(p, &result->fbytes); |
| 2111 | p = xdr_decode_size3(p, &result->abytes); |
| 2112 | p = xdr_decode_size3(p, &result->tfiles); |
| 2113 | p = xdr_decode_size3(p, &result->ffiles); |
| 2114 | xdr_decode_size3(p, &result->afiles); |
| 2115 | /* ignore invarsec */ |
| 2116 | return 0; |
| 2117 | out_overflow: |
| 2118 | print_overflow_msg(__func__, xdr); |
| 2119 | return -EIO; |
| 2120 | } |
| 2121 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2122 | static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req, |
| 2123 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2124 | struct nfs_fsstat *result) |
| 2125 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2126 | enum nfs_stat status; |
| 2127 | int error; |
| 2128 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2129 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2130 | if (unlikely(error)) |
| 2131 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2132 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2133 | if (unlikely(error)) |
| 2134 | goto out; |
| 2135 | if (status != NFS3_OK) |
| 2136 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2137 | error = decode_fsstat3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2138 | out: |
| 2139 | return error; |
| 2140 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2141 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2142 | } |
| 2143 | |
| 2144 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2145 | * 3.3.19 FSINFO3res |
| 2146 | * |
| 2147 | * struct FSINFO3resok { |
| 2148 | * post_op_attr obj_attributes; |
| 2149 | * uint32 rtmax; |
| 2150 | * uint32 rtpref; |
| 2151 | * uint32 rtmult; |
| 2152 | * uint32 wtmax; |
| 2153 | * uint32 wtpref; |
| 2154 | * uint32 wtmult; |
| 2155 | * uint32 dtpref; |
| 2156 | * size3 maxfilesize; |
| 2157 | * nfstime3 time_delta; |
| 2158 | * uint32 properties; |
| 2159 | * }; |
| 2160 | * |
| 2161 | * struct FSINFO3resfail { |
| 2162 | * post_op_attr obj_attributes; |
| 2163 | * }; |
| 2164 | * |
| 2165 | * union FSINFO3res switch (nfsstat3 status) { |
| 2166 | * case NFS3_OK: |
| 2167 | * FSINFO3resok resok; |
| 2168 | * default: |
| 2169 | * FSINFO3resfail resfail; |
| 2170 | * }; |
| 2171 | */ |
| 2172 | static int decode_fsinfo3resok(struct xdr_stream *xdr, |
| 2173 | struct nfs_fsinfo *result) |
| 2174 | { |
| 2175 | __be32 *p; |
| 2176 | |
| 2177 | p = xdr_inline_decode(xdr, 4 * 7 + 8 + 8 + 4); |
| 2178 | if (unlikely(p == NULL)) |
| 2179 | goto out_overflow; |
| 2180 | result->rtmax = be32_to_cpup(p++); |
| 2181 | result->rtpref = be32_to_cpup(p++); |
| 2182 | result->rtmult = be32_to_cpup(p++); |
| 2183 | result->wtmax = be32_to_cpup(p++); |
| 2184 | result->wtpref = be32_to_cpup(p++); |
| 2185 | result->wtmult = be32_to_cpup(p++); |
| 2186 | result->dtpref = be32_to_cpup(p++); |
| 2187 | p = xdr_decode_size3(p, &result->maxfilesize); |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 2188 | xdr_decode_nfstime3(p, &result->time_delta); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2189 | |
| 2190 | /* ignore properties */ |
| 2191 | result->lease_time = 0; |
| 2192 | return 0; |
| 2193 | out_overflow: |
| 2194 | print_overflow_msg(__func__, xdr); |
| 2195 | return -EIO; |
| 2196 | } |
| 2197 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2198 | static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req, |
| 2199 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2200 | struct nfs_fsinfo *result) |
| 2201 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2202 | enum nfs_stat status; |
| 2203 | int error; |
| 2204 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2205 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2206 | if (unlikely(error)) |
| 2207 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2208 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2209 | if (unlikely(error)) |
| 2210 | goto out; |
| 2211 | if (status != NFS3_OK) |
| 2212 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2213 | error = decode_fsinfo3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2214 | out: |
| 2215 | return error; |
| 2216 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2217 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2218 | } |
| 2219 | |
| 2220 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2221 | * 3.3.20 PATHCONF3res |
| 2222 | * |
| 2223 | * struct PATHCONF3resok { |
| 2224 | * post_op_attr obj_attributes; |
| 2225 | * uint32 linkmax; |
| 2226 | * uint32 name_max; |
| 2227 | * bool no_trunc; |
| 2228 | * bool chown_restricted; |
| 2229 | * bool case_insensitive; |
| 2230 | * bool case_preserving; |
| 2231 | * }; |
| 2232 | * |
| 2233 | * struct PATHCONF3resfail { |
| 2234 | * post_op_attr obj_attributes; |
| 2235 | * }; |
| 2236 | * |
| 2237 | * union PATHCONF3res switch (nfsstat3 status) { |
| 2238 | * case NFS3_OK: |
| 2239 | * PATHCONF3resok resok; |
| 2240 | * default: |
| 2241 | * PATHCONF3resfail resfail; |
| 2242 | * }; |
| 2243 | */ |
| 2244 | static int decode_pathconf3resok(struct xdr_stream *xdr, |
| 2245 | struct nfs_pathconf *result) |
| 2246 | { |
| 2247 | __be32 *p; |
| 2248 | |
| 2249 | p = xdr_inline_decode(xdr, 4 * 6); |
| 2250 | if (unlikely(p == NULL)) |
| 2251 | goto out_overflow; |
| 2252 | result->max_link = be32_to_cpup(p++); |
| 2253 | result->max_namelen = be32_to_cpup(p); |
| 2254 | /* ignore remaining fields */ |
| 2255 | return 0; |
| 2256 | out_overflow: |
| 2257 | print_overflow_msg(__func__, xdr); |
| 2258 | return -EIO; |
| 2259 | } |
| 2260 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2261 | static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req, |
| 2262 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2263 | struct nfs_pathconf *result) |
| 2264 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2265 | enum nfs_stat status; |
| 2266 | int error; |
| 2267 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2268 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2269 | if (unlikely(error)) |
| 2270 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2271 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2272 | if (unlikely(error)) |
| 2273 | goto out; |
| 2274 | if (status != NFS3_OK) |
| 2275 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2276 | error = decode_pathconf3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2277 | out: |
| 2278 | return error; |
| 2279 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2280 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2281 | } |
| 2282 | |
| 2283 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2284 | * 3.3.21 COMMIT3res |
| 2285 | * |
| 2286 | * struct COMMIT3resok { |
| 2287 | * wcc_data file_wcc; |
| 2288 | * writeverf3 verf; |
| 2289 | * }; |
| 2290 | * |
| 2291 | * struct COMMIT3resfail { |
| 2292 | * wcc_data file_wcc; |
| 2293 | * }; |
| 2294 | * |
| 2295 | * union COMMIT3res switch (nfsstat3 status) { |
| 2296 | * case NFS3_OK: |
| 2297 | * COMMIT3resok resok; |
| 2298 | * default: |
| 2299 | * COMMIT3resfail resfail; |
| 2300 | * }; |
| 2301 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2302 | static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req, |
| 2303 | struct xdr_stream *xdr, |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 2304 | struct nfs_commitres *result) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2305 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2306 | enum nfs_stat status; |
| 2307 | int error; |
| 2308 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2309 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2310 | if (unlikely(error)) |
| 2311 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2312 | error = decode_wcc_data(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2313 | if (unlikely(error)) |
| 2314 | goto out; |
| 2315 | if (status != NFS3_OK) |
| 2316 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2317 | error = decode_writeverf3(xdr, result->verf->verifier); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2318 | out: |
| 2319 | return error; |
| 2320 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2321 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2322 | } |
| 2323 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2324 | #ifdef CONFIG_NFS_V3_ACL |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2325 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2326 | static inline int decode_getacl3resok(struct xdr_stream *xdr, |
| 2327 | struct nfs3_getaclres *result) |
| 2328 | { |
| 2329 | struct posix_acl **acl; |
| 2330 | unsigned int *aclcnt; |
| 2331 | size_t hdrlen; |
| 2332 | int error; |
| 2333 | |
| 2334 | error = decode_post_op_attr(xdr, result->fattr); |
| 2335 | if (unlikely(error)) |
| 2336 | goto out; |
| 2337 | error = decode_uint32(xdr, &result->mask); |
| 2338 | if (unlikely(error)) |
| 2339 | goto out; |
| 2340 | error = -EINVAL; |
| 2341 | if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) |
| 2342 | goto out; |
| 2343 | |
| 2344 | hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base; |
| 2345 | |
| 2346 | acl = NULL; |
| 2347 | if (result->mask & NFS_ACL) |
| 2348 | acl = &result->acl_access; |
| 2349 | aclcnt = NULL; |
| 2350 | if (result->mask & NFS_ACLCNT) |
| 2351 | aclcnt = &result->acl_access_count; |
| 2352 | error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl); |
| 2353 | if (unlikely(error <= 0)) |
| 2354 | goto out; |
| 2355 | |
| 2356 | acl = NULL; |
| 2357 | if (result->mask & NFS_DFACL) |
| 2358 | acl = &result->acl_default; |
| 2359 | aclcnt = NULL; |
| 2360 | if (result->mask & NFS_DFACLCNT) |
| 2361 | aclcnt = &result->acl_default_count; |
| 2362 | error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl); |
| 2363 | if (unlikely(error <= 0)) |
| 2364 | return error; |
| 2365 | error = 0; |
| 2366 | out: |
| 2367 | return error; |
| 2368 | } |
| 2369 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2370 | static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req, |
| 2371 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2372 | struct nfs3_getaclres *result) |
| 2373 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2374 | enum nfs_stat status; |
| 2375 | int error; |
| 2376 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2377 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2378 | if (unlikely(error)) |
| 2379 | goto out; |
| 2380 | if (status != NFS3_OK) |
| 2381 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2382 | error = decode_getacl3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2383 | out: |
| 2384 | return error; |
| 2385 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2386 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2387 | } |
| 2388 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2389 | static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req, |
| 2390 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2391 | struct nfs_fattr *result) |
| 2392 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2393 | enum nfs_stat status; |
| 2394 | int error; |
| 2395 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2396 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2397 | if (unlikely(error)) |
| 2398 | goto out; |
| 2399 | if (status != NFS3_OK) |
| 2400 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2401 | error = decode_post_op_attr(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2402 | out: |
| 2403 | return error; |
| 2404 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2405 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2406 | } |
| 2407 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2408 | #endif /* CONFIG_NFS_V3_ACL */ |
| 2409 | |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2410 | |
| 2411 | /* |
| 2412 | * We need to translate between nfs status return values and |
| 2413 | * the local errno values which may not be the same. |
| 2414 | */ |
| 2415 | static const struct { |
| 2416 | int stat; |
| 2417 | int errno; |
| 2418 | } nfs_errtbl[] = { |
| 2419 | { NFS_OK, 0 }, |
| 2420 | { NFSERR_PERM, -EPERM }, |
| 2421 | { NFSERR_NOENT, -ENOENT }, |
| 2422 | { NFSERR_IO, -errno_NFSERR_IO}, |
| 2423 | { NFSERR_NXIO, -ENXIO }, |
| 2424 | /* { NFSERR_EAGAIN, -EAGAIN }, */ |
| 2425 | { NFSERR_ACCES, -EACCES }, |
| 2426 | { NFSERR_EXIST, -EEXIST }, |
| 2427 | { NFSERR_XDEV, -EXDEV }, |
| 2428 | { NFSERR_NODEV, -ENODEV }, |
| 2429 | { NFSERR_NOTDIR, -ENOTDIR }, |
| 2430 | { NFSERR_ISDIR, -EISDIR }, |
| 2431 | { NFSERR_INVAL, -EINVAL }, |
| 2432 | { NFSERR_FBIG, -EFBIG }, |
| 2433 | { NFSERR_NOSPC, -ENOSPC }, |
| 2434 | { NFSERR_ROFS, -EROFS }, |
| 2435 | { NFSERR_MLINK, -EMLINK }, |
| 2436 | { NFSERR_NAMETOOLONG, -ENAMETOOLONG }, |
| 2437 | { NFSERR_NOTEMPTY, -ENOTEMPTY }, |
| 2438 | { NFSERR_DQUOT, -EDQUOT }, |
| 2439 | { NFSERR_STALE, -ESTALE }, |
| 2440 | { NFSERR_REMOTE, -EREMOTE }, |
| 2441 | #ifdef EWFLUSH |
| 2442 | { NFSERR_WFLUSH, -EWFLUSH }, |
| 2443 | #endif |
| 2444 | { NFSERR_BADHANDLE, -EBADHANDLE }, |
| 2445 | { NFSERR_NOT_SYNC, -ENOTSYNC }, |
| 2446 | { NFSERR_BAD_COOKIE, -EBADCOOKIE }, |
| 2447 | { NFSERR_NOTSUPP, -ENOTSUPP }, |
| 2448 | { NFSERR_TOOSMALL, -ETOOSMALL }, |
| 2449 | { NFSERR_SERVERFAULT, -EREMOTEIO }, |
| 2450 | { NFSERR_BADTYPE, -EBADTYPE }, |
| 2451 | { NFSERR_JUKEBOX, -EJUKEBOX }, |
| 2452 | { -1, -EIO } |
| 2453 | }; |
| 2454 | |
| 2455 | /** |
| 2456 | * nfs3_stat_to_errno - convert an NFS status code to a local errno |
| 2457 | * @status: NFS status code to convert |
| 2458 | * |
| 2459 | * Returns a local errno value, or -EIO if the NFS status code is |
| 2460 | * not recognized. This function is used jointly by NFSv2 and NFSv3. |
| 2461 | */ |
| 2462 | static int nfs3_stat_to_errno(enum nfs_stat status) |
| 2463 | { |
| 2464 | int i; |
| 2465 | |
| 2466 | for (i = 0; nfs_errtbl[i].stat != -1; i++) { |
| 2467 | if (nfs_errtbl[i].stat == (int)status) |
| 2468 | return nfs_errtbl[i].errno; |
| 2469 | } |
| 2470 | dprintk("NFS: Unrecognized nfs status value: %u\n", status); |
| 2471 | return nfs_errtbl[i].errno; |
| 2472 | } |
| 2473 | |
| 2474 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2475 | #define PROC(proc, argtype, restype, timer) \ |
| 2476 | [NFS3PROC_##proc] = { \ |
| 2477 | .p_proc = NFS3PROC_##proc, \ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 2478 | .p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2479 | .p_decode = (kxdrdproc_t)nfs3_xdr_dec_##restype##3res, \ |
Chuck Lever | ad96b5b | 2010-12-14 14:56:01 +0000 | [diff] [blame] | 2480 | .p_arglen = NFS3_##argtype##args_sz, \ |
Chuck Lever | f5fc3c50 | 2010-12-14 14:56:42 +0000 | [diff] [blame] | 2481 | .p_replen = NFS3_##restype##res_sz, \ |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 2482 | .p_timer = timer, \ |
| 2483 | .p_statidx = NFS3PROC_##proc, \ |
| 2484 | .p_name = #proc, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2485 | } |
| 2486 | |
| 2487 | struct rpc_procinfo nfs3_procedures[] = { |
Chuck Lever | f5fc3c50 | 2010-12-14 14:56:42 +0000 | [diff] [blame] | 2488 | PROC(GETATTR, getattr, getattr, 1), |
| 2489 | PROC(SETATTR, setattr, setattr, 0), |
| 2490 | PROC(LOOKUP, lookup, lookup, 2), |
| 2491 | PROC(ACCESS, access, access, 1), |
| 2492 | PROC(READLINK, readlink, readlink, 3), |
| 2493 | PROC(READ, read, read, 3), |
| 2494 | PROC(WRITE, write, write, 4), |
| 2495 | PROC(CREATE, create, create, 0), |
| 2496 | PROC(MKDIR, mkdir, create, 0), |
| 2497 | PROC(SYMLINK, symlink, create, 0), |
| 2498 | PROC(MKNOD, mknod, create, 0), |
| 2499 | PROC(REMOVE, remove, remove, 0), |
| 2500 | PROC(RMDIR, lookup, setattr, 0), |
| 2501 | PROC(RENAME, rename, rename, 0), |
| 2502 | PROC(LINK, link, link, 0), |
| 2503 | PROC(READDIR, readdir, readdir, 3), |
| 2504 | PROC(READDIRPLUS, readdirplus, readdir, 3), |
| 2505 | PROC(FSSTAT, getattr, fsstat, 0), |
| 2506 | PROC(FSINFO, getattr, fsinfo, 0), |
| 2507 | PROC(PATHCONF, getattr, pathconf, 0), |
| 2508 | PROC(COMMIT, commit, commit, 5), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2509 | }; |
| 2510 | |
Trond Myklebust | a613fa1 | 2012-01-20 13:53:56 -0500 | [diff] [blame] | 2511 | const struct rpc_version nfs_version3 = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2512 | .number = 3, |
Tobias Klauser | e8c96f8 | 2006-03-24 03:15:34 -0800 | [diff] [blame] | 2513 | .nrprocs = ARRAY_SIZE(nfs3_procedures), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2514 | .procs = nfs3_procedures |
| 2515 | }; |
| 2516 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2517 | #ifdef CONFIG_NFS_V3_ACL |
| 2518 | static struct rpc_procinfo nfs3_acl_procedures[] = { |
| 2519 | [ACLPROC3_GETACL] = { |
| 2520 | .p_proc = ACLPROC3_GETACL, |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 2521 | .p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args, |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2522 | .p_decode = (kxdrdproc_t)nfs3_xdr_dec_getacl3res, |
Chuck Lever | 2bea90d | 2007-03-29 16:47:53 -0400 | [diff] [blame] | 2523 | .p_arglen = ACL3_getaclargs_sz, |
| 2524 | .p_replen = ACL3_getaclres_sz, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2525 | .p_timer = 1, |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 2526 | .p_name = "GETACL", |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2527 | }, |
| 2528 | [ACLPROC3_SETACL] = { |
| 2529 | .p_proc = ACLPROC3_SETACL, |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 2530 | .p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args, |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2531 | .p_decode = (kxdrdproc_t)nfs3_xdr_dec_setacl3res, |
Chuck Lever | 2bea90d | 2007-03-29 16:47:53 -0400 | [diff] [blame] | 2532 | .p_arglen = ACL3_setaclargs_sz, |
| 2533 | .p_replen = ACL3_setaclres_sz, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2534 | .p_timer = 0, |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 2535 | .p_name = "SETACL", |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2536 | }, |
| 2537 | }; |
| 2538 | |
Trond Myklebust | a613fa1 | 2012-01-20 13:53:56 -0500 | [diff] [blame] | 2539 | const struct rpc_version nfsacl_version3 = { |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2540 | .number = 3, |
| 2541 | .nrprocs = sizeof(nfs3_acl_procedures)/ |
| 2542 | sizeof(nfs3_acl_procedures[0]), |
| 2543 | .procs = nfs3_acl_procedures, |
| 2544 | }; |
| 2545 | #endif /* CONFIG_NFS_V3_ACL */ |