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 | ae46141f | 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 | |
Trond Myklebust | 7fc3884 | 2012-10-15 11:51:21 -0400 | [diff] [blame] | 201 | WARN_ON_ONCE(length > NFS3_MAXNAMLEN); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 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 | { |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 241 | encode_uint32(xdr, length); |
| 242 | xdr_write_pages(xdr, pages, 0, length); |
| 243 | } |
| 244 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 245 | static int decode_nfspath3(struct xdr_stream *xdr) |
| 246 | { |
| 247 | u32 recvd, count; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 248 | __be32 *p; |
| 249 | |
| 250 | p = xdr_inline_decode(xdr, 4); |
| 251 | if (unlikely(p == NULL)) |
| 252 | goto out_overflow; |
| 253 | count = be32_to_cpup(p); |
| 254 | if (unlikely(count >= xdr->buf->page_len || count > NFS3_MAXPATHLEN)) |
| 255 | goto out_nametoolong; |
Trond Myklebust | 64bd577 | 2012-06-20 22:35:05 -0400 | [diff] [blame] | 256 | recvd = xdr_read_pages(xdr, count); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 257 | if (unlikely(count > recvd)) |
| 258 | goto out_cheating; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 259 | xdr_terminate_string(xdr->buf, count); |
| 260 | return 0; |
| 261 | |
| 262 | out_nametoolong: |
| 263 | dprintk("NFS: returned pathname too long: %u\n", count); |
| 264 | return -ENAMETOOLONG; |
| 265 | out_cheating: |
| 266 | dprintk("NFS: server cheating in pathname result: " |
| 267 | "count %u > recvd %u\n", count, recvd); |
| 268 | return -EIO; |
| 269 | out_overflow: |
| 270 | print_overflow_msg(__func__, xdr); |
| 271 | return -EIO; |
| 272 | } |
| 273 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 274 | /* |
| 275 | * cookie3 |
| 276 | * |
| 277 | * typedef uint64 cookie3 |
| 278 | */ |
| 279 | static __be32 *xdr_encode_cookie3(__be32 *p, u64 cookie) |
| 280 | { |
| 281 | return xdr_encode_hyper(p, cookie); |
| 282 | } |
| 283 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 284 | static int decode_cookie3(struct xdr_stream *xdr, u64 *cookie) |
| 285 | { |
| 286 | return decode_uint64(xdr, cookie); |
| 287 | } |
| 288 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 289 | /* |
| 290 | * cookieverf3 |
| 291 | * |
| 292 | * typedef opaque cookieverf3[NFS3_COOKIEVERFSIZE]; |
| 293 | */ |
| 294 | static __be32 *xdr_encode_cookieverf3(__be32 *p, const __be32 *verifier) |
| 295 | { |
| 296 | memcpy(p, verifier, NFS3_COOKIEVERFSIZE); |
| 297 | return p + XDR_QUADLEN(NFS3_COOKIEVERFSIZE); |
| 298 | } |
| 299 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 300 | static int decode_cookieverf3(struct xdr_stream *xdr, __be32 *verifier) |
| 301 | { |
| 302 | __be32 *p; |
| 303 | |
| 304 | p = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE); |
| 305 | if (unlikely(p == NULL)) |
| 306 | goto out_overflow; |
| 307 | memcpy(verifier, p, NFS3_COOKIEVERFSIZE); |
| 308 | return 0; |
| 309 | out_overflow: |
| 310 | print_overflow_msg(__func__, xdr); |
| 311 | return -EIO; |
| 312 | } |
| 313 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 314 | /* |
| 315 | * createverf3 |
| 316 | * |
| 317 | * typedef opaque createverf3[NFS3_CREATEVERFSIZE]; |
| 318 | */ |
| 319 | static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier) |
| 320 | { |
| 321 | __be32 *p; |
| 322 | |
| 323 | p = xdr_reserve_space(xdr, NFS3_CREATEVERFSIZE); |
| 324 | memcpy(p, verifier, NFS3_CREATEVERFSIZE); |
| 325 | } |
| 326 | |
Trond Myklebust | 2f2c63b | 2012-06-08 11:56:09 -0400 | [diff] [blame] | 327 | static int decode_writeverf3(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 328 | { |
| 329 | __be32 *p; |
| 330 | |
| 331 | p = xdr_inline_decode(xdr, NFS3_WRITEVERFSIZE); |
| 332 | if (unlikely(p == NULL)) |
| 333 | goto out_overflow; |
Trond Myklebust | 2f2c63b | 2012-06-08 11:56:09 -0400 | [diff] [blame] | 334 | memcpy(verifier->data, p, NFS3_WRITEVERFSIZE); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 335 | return 0; |
| 336 | out_overflow: |
| 337 | print_overflow_msg(__func__, xdr); |
| 338 | return -EIO; |
| 339 | } |
| 340 | |
| 341 | /* |
| 342 | * size3 |
| 343 | * |
| 344 | * typedef uint64 size3; |
| 345 | */ |
| 346 | static __be32 *xdr_decode_size3(__be32 *p, u64 *size) |
| 347 | { |
| 348 | return xdr_decode_hyper(p, size); |
| 349 | } |
| 350 | |
| 351 | /* |
| 352 | * nfsstat3 |
| 353 | * |
| 354 | * enum nfsstat3 { |
| 355 | * NFS3_OK = 0, |
| 356 | * ... |
| 357 | * } |
| 358 | */ |
| 359 | #define NFS3_OK NFS_OK |
| 360 | |
| 361 | static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status) |
| 362 | { |
| 363 | __be32 *p; |
| 364 | |
| 365 | p = xdr_inline_decode(xdr, 4); |
| 366 | if (unlikely(p == NULL)) |
| 367 | goto out_overflow; |
| 368 | *status = be32_to_cpup(p); |
| 369 | return 0; |
| 370 | out_overflow: |
| 371 | print_overflow_msg(__func__, xdr); |
| 372 | return -EIO; |
| 373 | } |
| 374 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 375 | /* |
| 376 | * ftype3 |
| 377 | * |
| 378 | * enum ftype3 { |
| 379 | * NF3REG = 1, |
| 380 | * NF3DIR = 2, |
| 381 | * NF3BLK = 3, |
| 382 | * NF3CHR = 4, |
| 383 | * NF3LNK = 5, |
| 384 | * NF3SOCK = 6, |
| 385 | * NF3FIFO = 7 |
| 386 | * }; |
| 387 | */ |
| 388 | static void encode_ftype3(struct xdr_stream *xdr, const u32 type) |
| 389 | { |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 390 | encode_uint32(xdr, type); |
| 391 | } |
| 392 | |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 393 | static __be32 *xdr_decode_ftype3(__be32 *p, umode_t *mode) |
| 394 | { |
| 395 | u32 type; |
| 396 | |
| 397 | type = be32_to_cpup(p++); |
| 398 | if (type > NF3FIFO) |
| 399 | type = NF3NON; |
| 400 | *mode = nfs_type2fmt[type]; |
| 401 | return p; |
| 402 | } |
| 403 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 404 | /* |
| 405 | * specdata3 |
| 406 | * |
| 407 | * struct specdata3 { |
| 408 | * uint32 specdata1; |
| 409 | * uint32 specdata2; |
| 410 | * }; |
| 411 | */ |
| 412 | static void encode_specdata3(struct xdr_stream *xdr, const dev_t rdev) |
| 413 | { |
| 414 | __be32 *p; |
| 415 | |
| 416 | p = xdr_reserve_space(xdr, 8); |
| 417 | *p++ = cpu_to_be32(MAJOR(rdev)); |
| 418 | *p = cpu_to_be32(MINOR(rdev)); |
| 419 | } |
| 420 | |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 421 | static __be32 *xdr_decode_specdata3(__be32 *p, dev_t *rdev) |
| 422 | { |
| 423 | unsigned int major, minor; |
| 424 | |
| 425 | major = be32_to_cpup(p++); |
| 426 | minor = be32_to_cpup(p++); |
| 427 | *rdev = MKDEV(major, minor); |
| 428 | if (MAJOR(*rdev) != major || MINOR(*rdev) != minor) |
| 429 | *rdev = 0; |
| 430 | return p; |
| 431 | } |
| 432 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 433 | /* |
| 434 | * nfs_fh3 |
| 435 | * |
| 436 | * struct nfs_fh3 { |
| 437 | * opaque data<NFS3_FHSIZE>; |
| 438 | * }; |
| 439 | */ |
| 440 | static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh) |
| 441 | { |
| 442 | __be32 *p; |
| 443 | |
Trond Myklebust | 7fc3884 | 2012-10-15 11:51:21 -0400 | [diff] [blame] | 444 | WARN_ON_ONCE(fh->size > NFS3_FHSIZE); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 445 | p = xdr_reserve_space(xdr, 4 + fh->size); |
| 446 | xdr_encode_opaque(p, fh->data, fh->size); |
| 447 | } |
| 448 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 449 | static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) |
| 450 | { |
| 451 | u32 length; |
| 452 | __be32 *p; |
| 453 | |
| 454 | p = xdr_inline_decode(xdr, 4); |
| 455 | if (unlikely(p == NULL)) |
| 456 | goto out_overflow; |
| 457 | length = be32_to_cpup(p++); |
| 458 | if (unlikely(length > NFS3_FHSIZE)) |
| 459 | goto out_toobig; |
| 460 | p = xdr_inline_decode(xdr, length); |
| 461 | if (unlikely(p == NULL)) |
| 462 | goto out_overflow; |
| 463 | fh->size = length; |
| 464 | memcpy(fh->data, p, length); |
| 465 | return 0; |
| 466 | out_toobig: |
| 467 | dprintk("NFS: file handle size (%u) too big\n", length); |
| 468 | return -E2BIG; |
| 469 | out_overflow: |
| 470 | print_overflow_msg(__func__, xdr); |
| 471 | return -EIO; |
| 472 | } |
| 473 | |
| 474 | static void zero_nfs_fh3(struct nfs_fh *fh) |
| 475 | { |
| 476 | memset(fh, 0, sizeof(*fh)); |
| 477 | } |
| 478 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 479 | /* |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 480 | * nfstime3 |
| 481 | * |
| 482 | * struct nfstime3 { |
| 483 | * uint32 seconds; |
| 484 | * uint32 nseconds; |
| 485 | * }; |
| 486 | */ |
| 487 | static __be32 *xdr_encode_nfstime3(__be32 *p, const struct timespec *timep) |
| 488 | { |
| 489 | *p++ = cpu_to_be32(timep->tv_sec); |
| 490 | *p++ = cpu_to_be32(timep->tv_nsec); |
| 491 | return p; |
| 492 | } |
| 493 | |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 494 | static __be32 *xdr_decode_nfstime3(__be32 *p, struct timespec *timep) |
| 495 | { |
| 496 | timep->tv_sec = be32_to_cpup(p++); |
| 497 | timep->tv_nsec = be32_to_cpup(p++); |
| 498 | return p; |
| 499 | } |
| 500 | |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 501 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 502 | * sattr3 |
| 503 | * |
| 504 | * enum time_how { |
| 505 | * DONT_CHANGE = 0, |
| 506 | * SET_TO_SERVER_TIME = 1, |
| 507 | * SET_TO_CLIENT_TIME = 2 |
| 508 | * }; |
| 509 | * |
| 510 | * union set_mode3 switch (bool set_it) { |
| 511 | * case TRUE: |
| 512 | * mode3 mode; |
| 513 | * default: |
| 514 | * void; |
| 515 | * }; |
| 516 | * |
| 517 | * union set_uid3 switch (bool set_it) { |
| 518 | * case TRUE: |
| 519 | * uid3 uid; |
| 520 | * default: |
| 521 | * void; |
| 522 | * }; |
| 523 | * |
| 524 | * union set_gid3 switch (bool set_it) { |
| 525 | * case TRUE: |
| 526 | * gid3 gid; |
| 527 | * default: |
| 528 | * void; |
| 529 | * }; |
| 530 | * |
| 531 | * union set_size3 switch (bool set_it) { |
| 532 | * case TRUE: |
| 533 | * size3 size; |
| 534 | * default: |
| 535 | * void; |
| 536 | * }; |
| 537 | * |
| 538 | * union set_atime switch (time_how set_it) { |
| 539 | * case SET_TO_CLIENT_TIME: |
| 540 | * nfstime3 atime; |
| 541 | * default: |
| 542 | * void; |
| 543 | * }; |
| 544 | * |
| 545 | * union set_mtime switch (time_how set_it) { |
| 546 | * case SET_TO_CLIENT_TIME: |
| 547 | * nfstime3 mtime; |
| 548 | * default: |
| 549 | * void; |
| 550 | * }; |
| 551 | * |
| 552 | * struct sattr3 { |
| 553 | * set_mode3 mode; |
| 554 | * set_uid3 uid; |
| 555 | * set_gid3 gid; |
| 556 | * set_size3 size; |
| 557 | * set_atime atime; |
| 558 | * set_mtime mtime; |
| 559 | * }; |
| 560 | */ |
| 561 | static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr) |
| 562 | { |
| 563 | u32 nbytes; |
| 564 | __be32 *p; |
| 565 | |
| 566 | /* |
| 567 | * In order to make only a single xdr_reserve_space() call, |
| 568 | * pre-compute the total number of bytes to be reserved. |
| 569 | * Six boolean values, one for each set_foo field, are always |
| 570 | * present in the encoded result, so start there. |
| 571 | */ |
| 572 | nbytes = 6 * 4; |
| 573 | if (attr->ia_valid & ATTR_MODE) |
| 574 | nbytes += 4; |
| 575 | if (attr->ia_valid & ATTR_UID) |
| 576 | nbytes += 4; |
| 577 | if (attr->ia_valid & ATTR_GID) |
| 578 | nbytes += 4; |
| 579 | if (attr->ia_valid & ATTR_SIZE) |
| 580 | nbytes += 8; |
| 581 | if (attr->ia_valid & ATTR_ATIME_SET) |
| 582 | nbytes += 8; |
| 583 | if (attr->ia_valid & ATTR_MTIME_SET) |
| 584 | nbytes += 8; |
| 585 | p = xdr_reserve_space(xdr, nbytes); |
| 586 | |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 587 | if (attr->ia_valid & ATTR_MODE) { |
| 588 | *p++ = xdr_one; |
| 589 | *p++ = cpu_to_be32(attr->ia_mode & S_IALLUGO); |
| 590 | } else |
| 591 | *p++ = xdr_zero; |
| 592 | |
| 593 | if (attr->ia_valid & ATTR_UID) { |
| 594 | *p++ = xdr_one; |
Eric W. Biederman | 57a38da | 2013-02-01 03:50:00 -0800 | [diff] [blame] | 595 | *p++ = cpu_to_be32(from_kuid(&init_user_ns, attr->ia_uid)); |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 596 | } else |
| 597 | *p++ = xdr_zero; |
| 598 | |
| 599 | if (attr->ia_valid & ATTR_GID) { |
| 600 | *p++ = xdr_one; |
Eric W. Biederman | 57a38da | 2013-02-01 03:50:00 -0800 | [diff] [blame] | 601 | *p++ = cpu_to_be32(from_kgid(&init_user_ns, attr->ia_gid)); |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 602 | } else |
| 603 | *p++ = xdr_zero; |
| 604 | |
| 605 | if (attr->ia_valid & ATTR_SIZE) { |
| 606 | *p++ = xdr_one; |
| 607 | p = xdr_encode_hyper(p, (u64)attr->ia_size); |
| 608 | } else |
| 609 | *p++ = xdr_zero; |
| 610 | |
| 611 | if (attr->ia_valid & ATTR_ATIME_SET) { |
| 612 | *p++ = xdr_two; |
| 613 | p = xdr_encode_nfstime3(p, &attr->ia_atime); |
| 614 | } else if (attr->ia_valid & ATTR_ATIME) { |
| 615 | *p++ = xdr_one; |
| 616 | } else |
| 617 | *p++ = xdr_zero; |
| 618 | |
| 619 | if (attr->ia_valid & ATTR_MTIME_SET) { |
| 620 | *p++ = xdr_two; |
| 621 | xdr_encode_nfstime3(p, &attr->ia_mtime); |
| 622 | } else if (attr->ia_valid & ATTR_MTIME) { |
| 623 | *p = xdr_one; |
| 624 | } else |
| 625 | *p = xdr_zero; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 626 | } |
| 627 | |
| 628 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 629 | * fattr3 |
| 630 | * |
| 631 | * struct fattr3 { |
| 632 | * ftype3 type; |
| 633 | * mode3 mode; |
| 634 | * uint32 nlink; |
| 635 | * uid3 uid; |
| 636 | * gid3 gid; |
| 637 | * size3 size; |
| 638 | * size3 used; |
| 639 | * specdata3 rdev; |
| 640 | * uint64 fsid; |
| 641 | * fileid3 fileid; |
| 642 | * nfstime3 atime; |
| 643 | * nfstime3 mtime; |
| 644 | * nfstime3 ctime; |
| 645 | * }; |
| 646 | */ |
| 647 | static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr) |
| 648 | { |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 649 | umode_t fmode; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 650 | __be32 *p; |
| 651 | |
| 652 | p = xdr_inline_decode(xdr, NFS3_fattr_sz << 2); |
| 653 | if (unlikely(p == NULL)) |
| 654 | goto out_overflow; |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 655 | |
| 656 | p = xdr_decode_ftype3(p, &fmode); |
| 657 | |
| 658 | fattr->mode = (be32_to_cpup(p++) & ~S_IFMT) | fmode; |
| 659 | fattr->nlink = be32_to_cpup(p++); |
Eric W. Biederman | 57a38da | 2013-02-01 03:50:00 -0800 | [diff] [blame] | 660 | fattr->uid = make_kuid(&init_user_ns, be32_to_cpup(p++)); |
| 661 | if (!uid_valid(fattr->uid)) |
| 662 | goto out_uid; |
| 663 | fattr->gid = make_kgid(&init_user_ns, be32_to_cpup(p++)); |
| 664 | if (!gid_valid(fattr->gid)) |
| 665 | goto out_gid; |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 666 | |
| 667 | p = xdr_decode_size3(p, &fattr->size); |
| 668 | p = xdr_decode_size3(p, &fattr->du.nfs3.used); |
| 669 | p = xdr_decode_specdata3(p, &fattr->rdev); |
| 670 | |
| 671 | p = xdr_decode_hyper(p, &fattr->fsid.major); |
| 672 | fattr->fsid.minor = 0; |
| 673 | |
| 674 | p = xdr_decode_fileid3(p, &fattr->fileid); |
| 675 | p = xdr_decode_nfstime3(p, &fattr->atime); |
| 676 | p = xdr_decode_nfstime3(p, &fattr->mtime); |
| 677 | xdr_decode_nfstime3(p, &fattr->ctime); |
Trond Myklebust | 3a1556e | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 678 | fattr->change_attr = nfs_timespec_to_change_attr(&fattr->ctime); |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 679 | |
| 680 | fattr->valid |= NFS_ATTR_FATTR_V3; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 681 | return 0; |
Eric W. Biederman | 57a38da | 2013-02-01 03:50:00 -0800 | [diff] [blame] | 682 | out_uid: |
| 683 | dprintk("NFS: returned invalid uid\n"); |
| 684 | return -EINVAL; |
| 685 | out_gid: |
| 686 | dprintk("NFS: returned invalid gid\n"); |
| 687 | return -EINVAL; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 688 | out_overflow: |
| 689 | print_overflow_msg(__func__, xdr); |
| 690 | return -EIO; |
| 691 | } |
| 692 | |
| 693 | /* |
| 694 | * post_op_attr |
| 695 | * |
| 696 | * union post_op_attr switch (bool attributes_follow) { |
| 697 | * case TRUE: |
| 698 | * fattr3 attributes; |
| 699 | * case FALSE: |
| 700 | * void; |
| 701 | * }; |
| 702 | */ |
| 703 | static int decode_post_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) |
| 704 | { |
| 705 | __be32 *p; |
| 706 | |
| 707 | p = xdr_inline_decode(xdr, 4); |
| 708 | if (unlikely(p == NULL)) |
| 709 | goto out_overflow; |
| 710 | if (*p != xdr_zero) |
| 711 | return decode_fattr3(xdr, fattr); |
| 712 | return 0; |
| 713 | out_overflow: |
| 714 | print_overflow_msg(__func__, xdr); |
| 715 | return -EIO; |
| 716 | } |
| 717 | |
| 718 | /* |
| 719 | * wcc_attr |
| 720 | * struct wcc_attr { |
| 721 | * size3 size; |
| 722 | * nfstime3 mtime; |
| 723 | * nfstime3 ctime; |
| 724 | * }; |
| 725 | */ |
| 726 | static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) |
| 727 | { |
| 728 | __be32 *p; |
| 729 | |
| 730 | p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2); |
| 731 | if (unlikely(p == NULL)) |
| 732 | goto out_overflow; |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 733 | |
| 734 | fattr->valid |= NFS_ATTR_FATTR_PRESIZE |
Trond Myklebust | 3a1556e | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 735 | | NFS_ATTR_FATTR_PRECHANGE |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 736 | | NFS_ATTR_FATTR_PREMTIME |
| 737 | | NFS_ATTR_FATTR_PRECTIME; |
| 738 | |
| 739 | p = xdr_decode_size3(p, &fattr->pre_size); |
| 740 | p = xdr_decode_nfstime3(p, &fattr->pre_mtime); |
| 741 | xdr_decode_nfstime3(p, &fattr->pre_ctime); |
Trond Myklebust | 3a1556e | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 742 | fattr->pre_change_attr = nfs_timespec_to_change_attr(&fattr->pre_ctime); |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 743 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 744 | return 0; |
| 745 | out_overflow: |
| 746 | print_overflow_msg(__func__, xdr); |
| 747 | return -EIO; |
| 748 | } |
| 749 | |
| 750 | /* |
| 751 | * pre_op_attr |
| 752 | * union pre_op_attr switch (bool attributes_follow) { |
| 753 | * case TRUE: |
| 754 | * wcc_attr attributes; |
| 755 | * case FALSE: |
| 756 | * void; |
| 757 | * }; |
| 758 | * |
| 759 | * wcc_data |
| 760 | * |
| 761 | * struct wcc_data { |
| 762 | * pre_op_attr before; |
| 763 | * post_op_attr after; |
| 764 | * }; |
| 765 | */ |
| 766 | static int decode_pre_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) |
| 767 | { |
| 768 | __be32 *p; |
| 769 | |
| 770 | p = xdr_inline_decode(xdr, 4); |
| 771 | if (unlikely(p == NULL)) |
| 772 | goto out_overflow; |
| 773 | if (*p != xdr_zero) |
| 774 | return decode_wcc_attr(xdr, fattr); |
| 775 | return 0; |
| 776 | out_overflow: |
| 777 | print_overflow_msg(__func__, xdr); |
| 778 | return -EIO; |
| 779 | } |
| 780 | |
| 781 | static int decode_wcc_data(struct xdr_stream *xdr, struct nfs_fattr *fattr) |
| 782 | { |
| 783 | int error; |
| 784 | |
| 785 | error = decode_pre_op_attr(xdr, fattr); |
| 786 | if (unlikely(error)) |
| 787 | goto out; |
| 788 | error = decode_post_op_attr(xdr, fattr); |
| 789 | out: |
| 790 | return error; |
| 791 | } |
| 792 | |
| 793 | /* |
| 794 | * post_op_fh3 |
| 795 | * |
| 796 | * union post_op_fh3 switch (bool handle_follows) { |
| 797 | * case TRUE: |
| 798 | * nfs_fh3 handle; |
| 799 | * case FALSE: |
| 800 | * void; |
| 801 | * }; |
| 802 | */ |
| 803 | static int decode_post_op_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) |
| 804 | { |
| 805 | __be32 *p = xdr_inline_decode(xdr, 4); |
| 806 | if (unlikely(p == NULL)) |
| 807 | goto out_overflow; |
| 808 | if (*p != xdr_zero) |
| 809 | return decode_nfs_fh3(xdr, fh); |
| 810 | zero_nfs_fh3(fh); |
| 811 | return 0; |
| 812 | out_overflow: |
| 813 | print_overflow_msg(__func__, xdr); |
| 814 | return -EIO; |
| 815 | } |
| 816 | |
| 817 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 818 | * diropargs3 |
| 819 | * |
| 820 | * struct diropargs3 { |
| 821 | * nfs_fh3 dir; |
| 822 | * filename3 name; |
| 823 | * }; |
| 824 | */ |
| 825 | static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh, |
| 826 | const char *name, u32 length) |
| 827 | { |
| 828 | encode_nfs_fh3(xdr, fh); |
| 829 | encode_filename3(xdr, name, length); |
| 830 | } |
| 831 | |
| 832 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | /* |
Chuck Lever | 499ff71 | 2010-12-14 14:56:10 +0000 | [diff] [blame] | 834 | * NFSv3 XDR encode functions |
| 835 | * |
| 836 | * NFSv3 argument types are defined in section 3.3 of RFC 1813: |
| 837 | * "NFS Version 3 Protocol Specification". |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | */ |
| 839 | |
| 840 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 841 | * 3.3.1 GETATTR3args |
| 842 | * |
| 843 | * struct GETATTR3args { |
| 844 | * nfs_fh3 object; |
| 845 | * }; |
| 846 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 847 | static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, |
| 848 | struct xdr_stream *xdr, |
| 849 | const struct nfs_fh *fh) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 850 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 851 | encode_nfs_fh3(xdr, fh); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 852 | } |
| 853 | |
| 854 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 855 | * 3.3.2 SETATTR3args |
| 856 | * |
| 857 | * union sattrguard3 switch (bool check) { |
| 858 | * case TRUE: |
| 859 | * nfstime3 obj_ctime; |
| 860 | * case FALSE: |
| 861 | * void; |
| 862 | * }; |
| 863 | * |
| 864 | * struct SETATTR3args { |
| 865 | * nfs_fh3 object; |
| 866 | * sattr3 new_attributes; |
| 867 | * sattrguard3 guard; |
| 868 | * }; |
| 869 | */ |
| 870 | static void encode_sattrguard3(struct xdr_stream *xdr, |
| 871 | const struct nfs3_sattrargs *args) |
| 872 | { |
| 873 | __be32 *p; |
| 874 | |
| 875 | if (args->guard) { |
| 876 | p = xdr_reserve_space(xdr, 4 + 8); |
| 877 | *p++ = xdr_one; |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 878 | xdr_encode_nfstime3(p, &args->guardtime); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 879 | } else { |
| 880 | p = xdr_reserve_space(xdr, 4); |
| 881 | *p = xdr_zero; |
| 882 | } |
| 883 | } |
| 884 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 885 | static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, |
| 886 | struct xdr_stream *xdr, |
| 887 | const struct nfs3_sattrargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 888 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 889 | encode_nfs_fh3(xdr, args->fh); |
| 890 | encode_sattr3(xdr, args->sattr); |
| 891 | encode_sattrguard3(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 892 | } |
| 893 | |
| 894 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 895 | * 3.3.3 LOOKUP3args |
| 896 | * |
| 897 | * struct LOOKUP3args { |
| 898 | * diropargs3 what; |
| 899 | * }; |
| 900 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 901 | static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, |
| 902 | struct xdr_stream *xdr, |
| 903 | const struct nfs3_diropargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 904 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 905 | encode_diropargs3(xdr, args->fh, args->name, args->len); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 906 | } |
| 907 | |
| 908 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 909 | * 3.3.4 ACCESS3args |
| 910 | * |
| 911 | * struct ACCESS3args { |
| 912 | * nfs_fh3 object; |
| 913 | * uint32 access; |
| 914 | * }; |
| 915 | */ |
| 916 | static void encode_access3args(struct xdr_stream *xdr, |
| 917 | const struct nfs3_accessargs *args) |
| 918 | { |
| 919 | encode_nfs_fh3(xdr, args->fh); |
| 920 | encode_uint32(xdr, args->access); |
| 921 | } |
| 922 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 923 | static void nfs3_xdr_enc_access3args(struct rpc_rqst *req, |
| 924 | struct xdr_stream *xdr, |
| 925 | const struct nfs3_accessargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 926 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 927 | encode_access3args(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 928 | } |
| 929 | |
| 930 | /* |
| 931 | * 3.3.5 READLINK3args |
| 932 | * |
| 933 | * struct READLINK3args { |
| 934 | * nfs_fh3 symlink; |
| 935 | * }; |
| 936 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 937 | static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, |
| 938 | struct xdr_stream *xdr, |
| 939 | const struct nfs3_readlinkargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 940 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 941 | encode_nfs_fh3(xdr, args->fh); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 942 | prepare_reply_buffer(req, args->pages, args->pgbase, |
| 943 | args->pglen, NFS3_readlinkres_sz); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 944 | } |
| 945 | |
| 946 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 947 | * 3.3.6 READ3args |
| 948 | * |
| 949 | * struct READ3args { |
| 950 | * nfs_fh3 file; |
| 951 | * offset3 offset; |
| 952 | * count3 count; |
| 953 | * }; |
| 954 | */ |
| 955 | static void encode_read3args(struct xdr_stream *xdr, |
Anna Schumaker | 3c6b899 | 2014-05-06 09:12:24 -0400 | [diff] [blame] | 956 | const struct nfs_pgio_args *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 957 | { |
| 958 | __be32 *p; |
| 959 | |
| 960 | encode_nfs_fh3(xdr, args->fh); |
| 961 | |
| 962 | p = xdr_reserve_space(xdr, 8 + 4); |
| 963 | p = xdr_encode_hyper(p, args->offset); |
| 964 | *p = cpu_to_be32(args->count); |
| 965 | } |
| 966 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 967 | static void nfs3_xdr_enc_read3args(struct rpc_rqst *req, |
| 968 | struct xdr_stream *xdr, |
Anna Schumaker | 3c6b899 | 2014-05-06 09:12:24 -0400 | [diff] [blame] | 969 | const struct nfs_pgio_args *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 970 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 971 | encode_read3args(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 972 | prepare_reply_buffer(req, args->pages, args->pgbase, |
| 973 | args->count, NFS3_readres_sz); |
| 974 | req->rq_rcv_buf.flags |= XDRBUF_READ; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 975 | } |
| 976 | |
| 977 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 978 | * 3.3.7 WRITE3args |
| 979 | * |
| 980 | * enum stable_how { |
| 981 | * UNSTABLE = 0, |
| 982 | * DATA_SYNC = 1, |
| 983 | * FILE_SYNC = 2 |
| 984 | * }; |
| 985 | * |
| 986 | * struct WRITE3args { |
| 987 | * nfs_fh3 file; |
| 988 | * offset3 offset; |
| 989 | * count3 count; |
| 990 | * stable_how stable; |
| 991 | * opaque data<>; |
| 992 | * }; |
| 993 | */ |
| 994 | static void encode_write3args(struct xdr_stream *xdr, |
Anna Schumaker | 3c6b899 | 2014-05-06 09:12:24 -0400 | [diff] [blame] | 995 | const struct nfs_pgio_args *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 996 | { |
| 997 | __be32 *p; |
| 998 | |
| 999 | encode_nfs_fh3(xdr, args->fh); |
| 1000 | |
| 1001 | p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4); |
| 1002 | p = xdr_encode_hyper(p, args->offset); |
| 1003 | *p++ = cpu_to_be32(args->count); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1004 | *p++ = cpu_to_be32(args->stable); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1005 | *p = cpu_to_be32(args->count); |
| 1006 | xdr_write_pages(xdr, args->pages, args->pgbase, args->count); |
| 1007 | } |
| 1008 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1009 | static void nfs3_xdr_enc_write3args(struct rpc_rqst *req, |
| 1010 | struct xdr_stream *xdr, |
Anna Schumaker | 3c6b899 | 2014-05-06 09:12:24 -0400 | [diff] [blame] | 1011 | const struct nfs_pgio_args *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1012 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1013 | encode_write3args(xdr, args); |
| 1014 | xdr->buf->flags |= XDRBUF_WRITE; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1015 | } |
| 1016 | |
| 1017 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1018 | * 3.3.8 CREATE3args |
| 1019 | * |
| 1020 | * enum createmode3 { |
| 1021 | * UNCHECKED = 0, |
| 1022 | * GUARDED = 1, |
| 1023 | * EXCLUSIVE = 2 |
| 1024 | * }; |
| 1025 | * |
| 1026 | * union createhow3 switch (createmode3 mode) { |
| 1027 | * case UNCHECKED: |
| 1028 | * case GUARDED: |
| 1029 | * sattr3 obj_attributes; |
| 1030 | * case EXCLUSIVE: |
| 1031 | * createverf3 verf; |
| 1032 | * }; |
| 1033 | * |
| 1034 | * struct CREATE3args { |
| 1035 | * diropargs3 where; |
| 1036 | * createhow3 how; |
| 1037 | * }; |
| 1038 | */ |
| 1039 | static void encode_createhow3(struct xdr_stream *xdr, |
| 1040 | const struct nfs3_createargs *args) |
| 1041 | { |
| 1042 | encode_uint32(xdr, args->createmode); |
| 1043 | switch (args->createmode) { |
| 1044 | case NFS3_CREATE_UNCHECKED: |
| 1045 | case NFS3_CREATE_GUARDED: |
| 1046 | encode_sattr3(xdr, args->sattr); |
| 1047 | break; |
| 1048 | case NFS3_CREATE_EXCLUSIVE: |
| 1049 | encode_createverf3(xdr, args->verifier); |
| 1050 | break; |
| 1051 | default: |
| 1052 | BUG(); |
| 1053 | } |
| 1054 | } |
| 1055 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1056 | static void nfs3_xdr_enc_create3args(struct rpc_rqst *req, |
| 1057 | struct xdr_stream *xdr, |
| 1058 | const struct nfs3_createargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1059 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1060 | encode_diropargs3(xdr, args->fh, args->name, args->len); |
| 1061 | encode_createhow3(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1062 | } |
| 1063 | |
| 1064 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1065 | * 3.3.9 MKDIR3args |
| 1066 | * |
| 1067 | * struct MKDIR3args { |
| 1068 | * diropargs3 where; |
| 1069 | * sattr3 attributes; |
| 1070 | * }; |
| 1071 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1072 | static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, |
| 1073 | struct xdr_stream *xdr, |
| 1074 | const struct nfs3_mkdirargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1075 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1076 | encode_diropargs3(xdr, args->fh, args->name, args->len); |
| 1077 | encode_sattr3(xdr, args->sattr); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1078 | } |
| 1079 | |
| 1080 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1081 | * 3.3.10 SYMLINK3args |
| 1082 | * |
| 1083 | * struct symlinkdata3 { |
| 1084 | * sattr3 symlink_attributes; |
| 1085 | * nfspath3 symlink_data; |
| 1086 | * }; |
| 1087 | * |
| 1088 | * struct SYMLINK3args { |
| 1089 | * diropargs3 where; |
| 1090 | * symlinkdata3 symlink; |
| 1091 | * }; |
| 1092 | */ |
| 1093 | static void encode_symlinkdata3(struct xdr_stream *xdr, |
| 1094 | const struct nfs3_symlinkargs *args) |
| 1095 | { |
| 1096 | encode_sattr3(xdr, args->sattr); |
| 1097 | encode_nfspath3(xdr, args->pages, args->pathlen); |
| 1098 | } |
| 1099 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1100 | static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, |
| 1101 | struct xdr_stream *xdr, |
| 1102 | const struct nfs3_symlinkargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1103 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1104 | encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen); |
| 1105 | encode_symlinkdata3(xdr, args); |
Chuck Lever | 2fcc213 | 2015-08-03 13:04:26 -0400 | [diff] [blame^] | 1106 | xdr->buf->flags |= XDRBUF_WRITE; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1107 | } |
| 1108 | |
| 1109 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1110 | * 3.3.11 MKNOD3args |
| 1111 | * |
| 1112 | * struct devicedata3 { |
| 1113 | * sattr3 dev_attributes; |
| 1114 | * specdata3 spec; |
| 1115 | * }; |
| 1116 | * |
| 1117 | * union mknoddata3 switch (ftype3 type) { |
| 1118 | * case NF3CHR: |
| 1119 | * case NF3BLK: |
| 1120 | * devicedata3 device; |
| 1121 | * case NF3SOCK: |
| 1122 | * case NF3FIFO: |
| 1123 | * sattr3 pipe_attributes; |
| 1124 | * default: |
| 1125 | * void; |
| 1126 | * }; |
| 1127 | * |
| 1128 | * struct MKNOD3args { |
| 1129 | * diropargs3 where; |
| 1130 | * mknoddata3 what; |
| 1131 | * }; |
| 1132 | */ |
| 1133 | static void encode_devicedata3(struct xdr_stream *xdr, |
| 1134 | const struct nfs3_mknodargs *args) |
| 1135 | { |
| 1136 | encode_sattr3(xdr, args->sattr); |
| 1137 | encode_specdata3(xdr, args->rdev); |
| 1138 | } |
| 1139 | |
| 1140 | static void encode_mknoddata3(struct xdr_stream *xdr, |
| 1141 | const struct nfs3_mknodargs *args) |
| 1142 | { |
| 1143 | encode_ftype3(xdr, args->type); |
| 1144 | switch (args->type) { |
| 1145 | case NF3CHR: |
| 1146 | case NF3BLK: |
| 1147 | encode_devicedata3(xdr, args); |
| 1148 | break; |
| 1149 | case NF3SOCK: |
| 1150 | case NF3FIFO: |
| 1151 | encode_sattr3(xdr, args->sattr); |
| 1152 | break; |
| 1153 | case NF3REG: |
| 1154 | case NF3DIR: |
| 1155 | break; |
| 1156 | default: |
| 1157 | BUG(); |
| 1158 | } |
| 1159 | } |
| 1160 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1161 | static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, |
| 1162 | struct xdr_stream *xdr, |
| 1163 | const struct nfs3_mknodargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1164 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1165 | encode_diropargs3(xdr, args->fh, args->name, args->len); |
| 1166 | encode_mknoddata3(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1167 | } |
| 1168 | |
| 1169 | /* |
| 1170 | * 3.3.12 REMOVE3args |
| 1171 | * |
| 1172 | * struct REMOVE3args { |
| 1173 | * diropargs3 object; |
| 1174 | * }; |
| 1175 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1176 | static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req, |
| 1177 | struct xdr_stream *xdr, |
| 1178 | const struct nfs_removeargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1179 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1180 | encode_diropargs3(xdr, args->fh, args->name.name, args->name.len); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1181 | } |
| 1182 | |
| 1183 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1184 | * 3.3.14 RENAME3args |
| 1185 | * |
| 1186 | * struct RENAME3args { |
| 1187 | * diropargs3 from; |
| 1188 | * diropargs3 to; |
| 1189 | * }; |
| 1190 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1191 | static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req, |
| 1192 | struct xdr_stream *xdr, |
| 1193 | const struct nfs_renameargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1194 | { |
| 1195 | const struct qstr *old = args->old_name; |
| 1196 | const struct qstr *new = args->new_name; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1197 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1198 | encode_diropargs3(xdr, args->old_dir, old->name, old->len); |
| 1199 | encode_diropargs3(xdr, args->new_dir, new->name, new->len); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1200 | } |
| 1201 | |
| 1202 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1203 | * 3.3.15 LINK3args |
| 1204 | * |
| 1205 | * struct LINK3args { |
| 1206 | * nfs_fh3 file; |
| 1207 | * diropargs3 link; |
| 1208 | * }; |
| 1209 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1210 | static void nfs3_xdr_enc_link3args(struct rpc_rqst *req, |
| 1211 | struct xdr_stream *xdr, |
| 1212 | const struct nfs3_linkargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1213 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1214 | encode_nfs_fh3(xdr, args->fromfh); |
| 1215 | encode_diropargs3(xdr, args->tofh, args->toname, args->tolen); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1216 | } |
| 1217 | |
| 1218 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1219 | * 3.3.16 READDIR3args |
| 1220 | * |
| 1221 | * struct READDIR3args { |
| 1222 | * nfs_fh3 dir; |
| 1223 | * cookie3 cookie; |
| 1224 | * cookieverf3 cookieverf; |
| 1225 | * count3 count; |
| 1226 | * }; |
| 1227 | */ |
| 1228 | static void encode_readdir3args(struct xdr_stream *xdr, |
| 1229 | const struct nfs3_readdirargs *args) |
| 1230 | { |
| 1231 | __be32 *p; |
| 1232 | |
| 1233 | encode_nfs_fh3(xdr, args->fh); |
| 1234 | |
| 1235 | p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4); |
| 1236 | p = xdr_encode_cookie3(p, args->cookie); |
| 1237 | p = xdr_encode_cookieverf3(p, args->verf); |
| 1238 | *p = cpu_to_be32(args->count); |
| 1239 | } |
| 1240 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1241 | static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req, |
| 1242 | struct xdr_stream *xdr, |
| 1243 | const struct nfs3_readdirargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1244 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1245 | encode_readdir3args(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1246 | prepare_reply_buffer(req, args->pages, 0, |
| 1247 | args->count, NFS3_readdirres_sz); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1248 | } |
| 1249 | |
| 1250 | /* |
| 1251 | * 3.3.17 READDIRPLUS3args |
| 1252 | * |
| 1253 | * struct READDIRPLUS3args { |
| 1254 | * nfs_fh3 dir; |
| 1255 | * cookie3 cookie; |
| 1256 | * cookieverf3 cookieverf; |
| 1257 | * count3 dircount; |
| 1258 | * count3 maxcount; |
| 1259 | * }; |
| 1260 | */ |
| 1261 | static void encode_readdirplus3args(struct xdr_stream *xdr, |
| 1262 | const struct nfs3_readdirargs *args) |
| 1263 | { |
| 1264 | __be32 *p; |
| 1265 | |
| 1266 | encode_nfs_fh3(xdr, args->fh); |
| 1267 | |
| 1268 | p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4); |
| 1269 | p = xdr_encode_cookie3(p, args->cookie); |
| 1270 | p = xdr_encode_cookieverf3(p, args->verf); |
| 1271 | |
| 1272 | /* |
| 1273 | * readdirplus: need dircount + buffer size. |
| 1274 | * We just make sure we make dircount big enough |
| 1275 | */ |
| 1276 | *p++ = cpu_to_be32(args->count >> 3); |
| 1277 | |
| 1278 | *p = cpu_to_be32(args->count); |
| 1279 | } |
| 1280 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1281 | static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, |
| 1282 | struct xdr_stream *xdr, |
| 1283 | const struct nfs3_readdirargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1284 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1285 | encode_readdirplus3args(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1286 | prepare_reply_buffer(req, args->pages, 0, |
| 1287 | args->count, NFS3_readdirres_sz); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1288 | } |
| 1289 | |
| 1290 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1291 | * 3.3.21 COMMIT3args |
| 1292 | * |
| 1293 | * struct COMMIT3args { |
| 1294 | * nfs_fh3 file; |
| 1295 | * offset3 offset; |
| 1296 | * count3 count; |
| 1297 | * }; |
| 1298 | */ |
| 1299 | static void encode_commit3args(struct xdr_stream *xdr, |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 1300 | const struct nfs_commitargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1301 | { |
| 1302 | __be32 *p; |
| 1303 | |
| 1304 | encode_nfs_fh3(xdr, args->fh); |
| 1305 | |
| 1306 | p = xdr_reserve_space(xdr, 8 + 4); |
| 1307 | p = xdr_encode_hyper(p, args->offset); |
| 1308 | *p = cpu_to_be32(args->count); |
| 1309 | } |
| 1310 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1311 | static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req, |
| 1312 | struct xdr_stream *xdr, |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 1313 | const struct nfs_commitargs *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_commit3args(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1316 | } |
| 1317 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1318 | #ifdef CONFIG_NFS_V3_ACL |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1319 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1320 | static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, |
| 1321 | struct xdr_stream *xdr, |
| 1322 | const struct nfs3_getaclargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1323 | { |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1324 | encode_nfs_fh3(xdr, args->fh); |
| 1325 | encode_uint32(xdr, args->mask); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1326 | if (args->mask & (NFS_ACL | NFS_DFACL)) |
| 1327 | prepare_reply_buffer(req, args->pages, 0, |
| 1328 | NFSACL_MAXPAGES << PAGE_SHIFT, |
| 1329 | ACL3_getaclres_sz); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1330 | } |
| 1331 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1332 | static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, |
| 1333 | struct xdr_stream *xdr, |
| 1334 | const struct nfs3_setaclargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1335 | { |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1336 | unsigned int base; |
| 1337 | int error; |
| 1338 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1339 | encode_nfs_fh3(xdr, NFS_FH(args->inode)); |
| 1340 | encode_uint32(xdr, args->mask); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1341 | |
| 1342 | base = req->rq_slen; |
Chuck Lever | ee5dc77 | 2011-01-21 03:05:18 +0000 | [diff] [blame] | 1343 | if (args->npages != 0) |
| 1344 | xdr_write_pages(xdr, args->pages, 0, args->len); |
| 1345 | else |
Chuck Lever | d683cc4 | 2015-05-26 11:53:52 -0400 | [diff] [blame] | 1346 | xdr_reserve_space(xdr, args->len); |
Chuck Lever | ee5dc77 | 2011-01-21 03:05:18 +0000 | [diff] [blame] | 1347 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1348 | error = nfsacl_encode(xdr->buf, base, args->inode, |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1349 | (args->mask & NFS_ACL) ? |
| 1350 | args->acl_access : NULL, 1, 0); |
Trond Myklebust | 7fc3884 | 2012-10-15 11:51:21 -0400 | [diff] [blame] | 1351 | /* FIXME: this is just broken */ |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1352 | BUG_ON(error < 0); |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1353 | error = nfsacl_encode(xdr->buf, base + error, args->inode, |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1354 | (args->mask & NFS_DFACL) ? |
| 1355 | args->acl_default : NULL, 1, |
| 1356 | NFS_ACL_DEFAULT); |
| 1357 | BUG_ON(error < 0); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1358 | } |
| 1359 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1360 | #endif /* CONFIG_NFS_V3_ACL */ |
| 1361 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | /* |
Chuck Lever | b2cdd9c | 2010-12-14 14:56:52 +0000 | [diff] [blame] | 1363 | * NFSv3 XDR decode functions |
| 1364 | * |
| 1365 | * NFSv3 result types are defined in section 3.3 of RFC 1813: |
| 1366 | * "NFS Version 3 Protocol Specification". |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | */ |
| 1368 | |
| 1369 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1370 | * 3.3.1 GETATTR3res |
| 1371 | * |
| 1372 | * struct GETATTR3resok { |
| 1373 | * fattr3 obj_attributes; |
| 1374 | * }; |
| 1375 | * |
| 1376 | * union GETATTR3res switch (nfsstat3 status) { |
| 1377 | * case NFS3_OK: |
| 1378 | * GETATTR3resok resok; |
| 1379 | * default: |
| 1380 | * void; |
| 1381 | * }; |
| 1382 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1383 | static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req, |
| 1384 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1385 | struct nfs_fattr *result) |
| 1386 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1387 | enum nfs_stat status; |
| 1388 | int error; |
| 1389 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1390 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1391 | if (unlikely(error)) |
| 1392 | goto out; |
| 1393 | if (status != NFS3_OK) |
| 1394 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1395 | error = decode_fattr3(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1396 | out: |
| 1397 | return error; |
| 1398 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1399 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1400 | } |
| 1401 | |
| 1402 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1403 | * 3.3.2 SETATTR3res |
| 1404 | * |
| 1405 | * struct SETATTR3resok { |
| 1406 | * wcc_data obj_wcc; |
| 1407 | * }; |
| 1408 | * |
| 1409 | * struct SETATTR3resfail { |
| 1410 | * wcc_data obj_wcc; |
| 1411 | * }; |
| 1412 | * |
| 1413 | * union SETATTR3res switch (nfsstat3 status) { |
| 1414 | * case NFS3_OK: |
| 1415 | * SETATTR3resok resok; |
| 1416 | * default: |
| 1417 | * SETATTR3resfail resfail; |
| 1418 | * }; |
| 1419 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1420 | static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req, |
| 1421 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1422 | struct nfs_fattr *result) |
| 1423 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1424 | enum nfs_stat status; |
| 1425 | int error; |
| 1426 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1427 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1428 | if (unlikely(error)) |
| 1429 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1430 | error = decode_wcc_data(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1431 | if (unlikely(error)) |
| 1432 | goto out; |
| 1433 | if (status != NFS3_OK) |
| 1434 | goto out_status; |
| 1435 | out: |
| 1436 | return error; |
| 1437 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1438 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1439 | } |
| 1440 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1442 | * 3.3.3 LOOKUP3res |
| 1443 | * |
| 1444 | * struct LOOKUP3resok { |
| 1445 | * nfs_fh3 object; |
| 1446 | * post_op_attr obj_attributes; |
| 1447 | * post_op_attr dir_attributes; |
| 1448 | * }; |
| 1449 | * |
| 1450 | * struct LOOKUP3resfail { |
| 1451 | * post_op_attr dir_attributes; |
| 1452 | * }; |
| 1453 | * |
| 1454 | * union LOOKUP3res switch (nfsstat3 status) { |
| 1455 | * case NFS3_OK: |
| 1456 | * LOOKUP3resok resok; |
| 1457 | * default: |
| 1458 | * LOOKUP3resfail resfail; |
| 1459 | * }; |
| 1460 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1461 | static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req, |
| 1462 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1463 | struct nfs3_diropres *result) |
| 1464 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1465 | enum nfs_stat status; |
| 1466 | int error; |
| 1467 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1468 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1469 | if (unlikely(error)) |
| 1470 | goto out; |
| 1471 | if (status != NFS3_OK) |
| 1472 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1473 | error = decode_nfs_fh3(xdr, result->fh); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1474 | if (unlikely(error)) |
| 1475 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1476 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1477 | if (unlikely(error)) |
| 1478 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1479 | error = decode_post_op_attr(xdr, result->dir_attr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1480 | out: |
| 1481 | return error; |
| 1482 | out_default: |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1483 | error = decode_post_op_attr(xdr, result->dir_attr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1484 | if (unlikely(error)) |
| 1485 | goto out; |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1486 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1487 | } |
| 1488 | |
| 1489 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1490 | * 3.3.4 ACCESS3res |
| 1491 | * |
| 1492 | * struct ACCESS3resok { |
| 1493 | * post_op_attr obj_attributes; |
| 1494 | * uint32 access; |
| 1495 | * }; |
| 1496 | * |
| 1497 | * struct ACCESS3resfail { |
| 1498 | * post_op_attr obj_attributes; |
| 1499 | * }; |
| 1500 | * |
| 1501 | * union ACCESS3res switch (nfsstat3 status) { |
| 1502 | * case NFS3_OK: |
| 1503 | * ACCESS3resok resok; |
| 1504 | * default: |
| 1505 | * ACCESS3resfail resfail; |
| 1506 | * }; |
| 1507 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1508 | static int nfs3_xdr_dec_access3res(struct rpc_rqst *req, |
| 1509 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1510 | struct nfs3_accessres *result) |
| 1511 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1512 | enum nfs_stat status; |
| 1513 | int error; |
| 1514 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1515 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1516 | if (unlikely(error)) |
| 1517 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1518 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1519 | if (unlikely(error)) |
| 1520 | goto out; |
| 1521 | if (status != NFS3_OK) |
| 1522 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1523 | error = decode_uint32(xdr, &result->access); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1524 | out: |
| 1525 | return error; |
| 1526 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1527 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1528 | } |
| 1529 | |
| 1530 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1531 | * 3.3.5 READLINK3res |
| 1532 | * |
| 1533 | * struct READLINK3resok { |
| 1534 | * post_op_attr symlink_attributes; |
| 1535 | * nfspath3 data; |
| 1536 | * }; |
| 1537 | * |
| 1538 | * struct READLINK3resfail { |
| 1539 | * post_op_attr symlink_attributes; |
| 1540 | * }; |
| 1541 | * |
| 1542 | * union READLINK3res switch (nfsstat3 status) { |
| 1543 | * case NFS3_OK: |
| 1544 | * READLINK3resok resok; |
| 1545 | * default: |
| 1546 | * READLINK3resfail resfail; |
| 1547 | * }; |
| 1548 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1549 | static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req, |
| 1550 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1551 | struct nfs_fattr *result) |
| 1552 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1553 | enum nfs_stat status; |
| 1554 | int error; |
| 1555 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1556 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1557 | if (unlikely(error)) |
| 1558 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1559 | error = decode_post_op_attr(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1560 | if (unlikely(error)) |
| 1561 | goto out; |
| 1562 | if (status != NFS3_OK) |
| 1563 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1564 | error = decode_nfspath3(xdr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1565 | out: |
| 1566 | return error; |
| 1567 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1568 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1569 | } |
| 1570 | |
| 1571 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1572 | * 3.3.6 READ3res |
| 1573 | * |
| 1574 | * struct READ3resok { |
| 1575 | * post_op_attr file_attributes; |
| 1576 | * count3 count; |
| 1577 | * bool eof; |
| 1578 | * opaque data<>; |
| 1579 | * }; |
| 1580 | * |
| 1581 | * struct READ3resfail { |
| 1582 | * post_op_attr file_attributes; |
| 1583 | * }; |
| 1584 | * |
| 1585 | * union READ3res switch (nfsstat3 status) { |
| 1586 | * case NFS3_OK: |
| 1587 | * READ3resok resok; |
| 1588 | * default: |
| 1589 | * READ3resfail resfail; |
| 1590 | * }; |
| 1591 | */ |
| 1592 | static int decode_read3resok(struct xdr_stream *xdr, |
Anna Schumaker | 9137bdf | 2014-05-06 09:12:25 -0400 | [diff] [blame] | 1593 | struct nfs_pgio_res *result) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1594 | { |
| 1595 | u32 eof, count, ocount, recvd; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1596 | __be32 *p; |
| 1597 | |
| 1598 | p = xdr_inline_decode(xdr, 4 + 4 + 4); |
| 1599 | if (unlikely(p == NULL)) |
| 1600 | goto out_overflow; |
| 1601 | count = be32_to_cpup(p++); |
| 1602 | eof = be32_to_cpup(p++); |
| 1603 | ocount = be32_to_cpup(p++); |
| 1604 | if (unlikely(ocount != count)) |
| 1605 | goto out_mismatch; |
Trond Myklebust | 64bd577 | 2012-06-20 22:35:05 -0400 | [diff] [blame] | 1606 | recvd = xdr_read_pages(xdr, count); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1607 | if (unlikely(count > recvd)) |
| 1608 | goto out_cheating; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1609 | out: |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1610 | result->eof = eof; |
| 1611 | result->count = count; |
| 1612 | return count; |
| 1613 | out_mismatch: |
| 1614 | dprintk("NFS: READ count doesn't match length of opaque: " |
| 1615 | "count %u != ocount %u\n", count, ocount); |
| 1616 | return -EIO; |
| 1617 | out_cheating: |
| 1618 | dprintk("NFS: server cheating in read result: " |
| 1619 | "count %u > recvd %u\n", count, recvd); |
| 1620 | count = recvd; |
| 1621 | eof = 0; |
| 1622 | goto out; |
| 1623 | out_overflow: |
| 1624 | print_overflow_msg(__func__, xdr); |
| 1625 | return -EIO; |
| 1626 | } |
| 1627 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1628 | static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
Anna Schumaker | 9137bdf | 2014-05-06 09:12:25 -0400 | [diff] [blame] | 1629 | struct nfs_pgio_res *result) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1630 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1631 | enum nfs_stat status; |
| 1632 | int error; |
| 1633 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1634 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1635 | if (unlikely(error)) |
| 1636 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1637 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1638 | if (unlikely(error)) |
| 1639 | goto out; |
Peng Tao | aabff4d | 2014-08-27 10:47:14 +0800 | [diff] [blame] | 1640 | result->op_status = status; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1641 | if (status != NFS3_OK) |
| 1642 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1643 | error = decode_read3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1644 | out: |
| 1645 | return error; |
| 1646 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1647 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1648 | } |
| 1649 | |
| 1650 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1651 | * 3.3.7 WRITE3res |
| 1652 | * |
| 1653 | * enum stable_how { |
| 1654 | * UNSTABLE = 0, |
| 1655 | * DATA_SYNC = 1, |
| 1656 | * FILE_SYNC = 2 |
| 1657 | * }; |
| 1658 | * |
| 1659 | * struct WRITE3resok { |
| 1660 | * wcc_data file_wcc; |
| 1661 | * count3 count; |
| 1662 | * stable_how committed; |
| 1663 | * writeverf3 verf; |
| 1664 | * }; |
| 1665 | * |
| 1666 | * struct WRITE3resfail { |
| 1667 | * wcc_data file_wcc; |
| 1668 | * }; |
| 1669 | * |
| 1670 | * union WRITE3res switch (nfsstat3 status) { |
| 1671 | * case NFS3_OK: |
| 1672 | * WRITE3resok resok; |
| 1673 | * default: |
| 1674 | * WRITE3resfail resfail; |
| 1675 | * }; |
| 1676 | */ |
| 1677 | static int decode_write3resok(struct xdr_stream *xdr, |
Anna Schumaker | 9137bdf | 2014-05-06 09:12:25 -0400 | [diff] [blame] | 1678 | struct nfs_pgio_res *result) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1679 | { |
| 1680 | __be32 *p; |
| 1681 | |
Trond Myklebust | 2f2c63b | 2012-06-08 11:56:09 -0400 | [diff] [blame] | 1682 | p = xdr_inline_decode(xdr, 4 + 4); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1683 | if (unlikely(p == NULL)) |
| 1684 | goto out_overflow; |
| 1685 | result->count = be32_to_cpup(p++); |
| 1686 | result->verf->committed = be32_to_cpup(p++); |
| 1687 | if (unlikely(result->verf->committed > NFS_FILE_SYNC)) |
| 1688 | goto out_badvalue; |
Trond Myklebust | 2f2c63b | 2012-06-08 11:56:09 -0400 | [diff] [blame] | 1689 | if (decode_writeverf3(xdr, &result->verf->verifier)) |
| 1690 | goto out_eio; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1691 | return result->count; |
| 1692 | out_badvalue: |
| 1693 | dprintk("NFS: bad stable_how value: %u\n", result->verf->committed); |
| 1694 | return -EIO; |
| 1695 | out_overflow: |
| 1696 | print_overflow_msg(__func__, xdr); |
Trond Myklebust | 2f2c63b | 2012-06-08 11:56:09 -0400 | [diff] [blame] | 1697 | out_eio: |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1698 | return -EIO; |
| 1699 | } |
| 1700 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1701 | static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
Anna Schumaker | 9137bdf | 2014-05-06 09:12:25 -0400 | [diff] [blame] | 1702 | struct nfs_pgio_res *result) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1703 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1704 | enum nfs_stat status; |
| 1705 | int error; |
| 1706 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1707 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1708 | if (unlikely(error)) |
| 1709 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1710 | error = decode_wcc_data(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1711 | if (unlikely(error)) |
| 1712 | goto out; |
Peng Tao | aabff4d | 2014-08-27 10:47:14 +0800 | [diff] [blame] | 1713 | result->op_status = status; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1714 | if (status != NFS3_OK) |
| 1715 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1716 | error = decode_write3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1717 | out: |
| 1718 | return error; |
| 1719 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1720 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1721 | } |
| 1722 | |
| 1723 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1724 | * 3.3.8 CREATE3res |
| 1725 | * |
| 1726 | * struct CREATE3resok { |
| 1727 | * post_op_fh3 obj; |
| 1728 | * post_op_attr obj_attributes; |
| 1729 | * wcc_data dir_wcc; |
| 1730 | * }; |
| 1731 | * |
| 1732 | * struct CREATE3resfail { |
| 1733 | * wcc_data dir_wcc; |
| 1734 | * }; |
| 1735 | * |
| 1736 | * union CREATE3res switch (nfsstat3 status) { |
| 1737 | * case NFS3_OK: |
| 1738 | * CREATE3resok resok; |
| 1739 | * default: |
| 1740 | * CREATE3resfail resfail; |
| 1741 | * }; |
| 1742 | */ |
| 1743 | static int decode_create3resok(struct xdr_stream *xdr, |
| 1744 | struct nfs3_diropres *result) |
| 1745 | { |
| 1746 | int error; |
| 1747 | |
| 1748 | error = decode_post_op_fh3(xdr, result->fh); |
| 1749 | if (unlikely(error)) |
| 1750 | goto out; |
| 1751 | error = decode_post_op_attr(xdr, result->fattr); |
| 1752 | if (unlikely(error)) |
| 1753 | goto out; |
| 1754 | /* The server isn't required to return a file handle. |
| 1755 | * If it didn't, force the client to perform a LOOKUP |
| 1756 | * to determine the correct file handle and attribute |
| 1757 | * values for the new object. */ |
| 1758 | if (result->fh->size == 0) |
| 1759 | result->fattr->valid = 0; |
| 1760 | error = decode_wcc_data(xdr, result->dir_attr); |
| 1761 | out: |
| 1762 | return error; |
| 1763 | } |
| 1764 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1765 | static int nfs3_xdr_dec_create3res(struct rpc_rqst *req, |
| 1766 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1767 | struct nfs3_diropres *result) |
| 1768 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1769 | enum nfs_stat status; |
| 1770 | int error; |
| 1771 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1772 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1773 | if (unlikely(error)) |
| 1774 | goto out; |
| 1775 | if (status != NFS3_OK) |
| 1776 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1777 | error = decode_create3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1778 | out: |
| 1779 | return error; |
| 1780 | out_default: |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1781 | error = decode_wcc_data(xdr, result->dir_attr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1782 | if (unlikely(error)) |
| 1783 | goto out; |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1784 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1785 | } |
| 1786 | |
| 1787 | /* |
| 1788 | * 3.3.12 REMOVE3res |
| 1789 | * |
| 1790 | * struct REMOVE3resok { |
| 1791 | * wcc_data dir_wcc; |
| 1792 | * }; |
| 1793 | * |
| 1794 | * struct REMOVE3resfail { |
| 1795 | * wcc_data dir_wcc; |
| 1796 | * }; |
| 1797 | * |
| 1798 | * union REMOVE3res switch (nfsstat3 status) { |
| 1799 | * case NFS3_OK: |
| 1800 | * REMOVE3resok resok; |
| 1801 | * default: |
| 1802 | * REMOVE3resfail resfail; |
| 1803 | * }; |
| 1804 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1805 | static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req, |
| 1806 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1807 | struct nfs_removeres *result) |
| 1808 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1809 | enum nfs_stat status; |
| 1810 | int error; |
| 1811 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1812 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1813 | if (unlikely(error)) |
| 1814 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1815 | error = decode_wcc_data(xdr, result->dir_attr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1816 | if (unlikely(error)) |
| 1817 | goto out; |
| 1818 | if (status != NFS3_OK) |
| 1819 | goto out_status; |
| 1820 | out: |
| 1821 | return error; |
| 1822 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1823 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1824 | } |
| 1825 | |
| 1826 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1827 | * 3.3.14 RENAME3res |
| 1828 | * |
| 1829 | * struct RENAME3resok { |
| 1830 | * wcc_data fromdir_wcc; |
| 1831 | * wcc_data todir_wcc; |
| 1832 | * }; |
| 1833 | * |
| 1834 | * struct RENAME3resfail { |
| 1835 | * wcc_data fromdir_wcc; |
| 1836 | * wcc_data todir_wcc; |
| 1837 | * }; |
| 1838 | * |
| 1839 | * union RENAME3res switch (nfsstat3 status) { |
| 1840 | * case NFS3_OK: |
| 1841 | * RENAME3resok resok; |
| 1842 | * default: |
| 1843 | * RENAME3resfail resfail; |
| 1844 | * }; |
| 1845 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1846 | static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req, |
| 1847 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1848 | struct nfs_renameres *result) |
| 1849 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1850 | enum nfs_stat status; |
| 1851 | int error; |
| 1852 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1853 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1854 | if (unlikely(error)) |
| 1855 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1856 | error = decode_wcc_data(xdr, result->old_fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1857 | if (unlikely(error)) |
| 1858 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1859 | error = decode_wcc_data(xdr, result->new_fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1860 | if (unlikely(error)) |
| 1861 | goto out; |
| 1862 | if (status != NFS3_OK) |
| 1863 | goto out_status; |
| 1864 | out: |
| 1865 | return error; |
| 1866 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1867 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1868 | } |
| 1869 | |
| 1870 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1871 | * 3.3.15 LINK3res |
| 1872 | * |
| 1873 | * struct LINK3resok { |
| 1874 | * post_op_attr file_attributes; |
| 1875 | * wcc_data linkdir_wcc; |
| 1876 | * }; |
| 1877 | * |
| 1878 | * struct LINK3resfail { |
| 1879 | * post_op_attr file_attributes; |
| 1880 | * wcc_data linkdir_wcc; |
| 1881 | * }; |
| 1882 | * |
| 1883 | * union LINK3res switch (nfsstat3 status) { |
| 1884 | * case NFS3_OK: |
| 1885 | * LINK3resok resok; |
| 1886 | * default: |
| 1887 | * LINK3resfail resfail; |
| 1888 | * }; |
| 1889 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1890 | 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] | 1891 | struct nfs3_linkres *result) |
| 1892 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1893 | enum nfs_stat status; |
| 1894 | int error; |
| 1895 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1896 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1897 | if (unlikely(error)) |
| 1898 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1899 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1900 | if (unlikely(error)) |
| 1901 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1902 | error = decode_wcc_data(xdr, result->dir_attr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1903 | if (unlikely(error)) |
| 1904 | goto out; |
| 1905 | if (status != NFS3_OK) |
| 1906 | goto out_status; |
| 1907 | out: |
| 1908 | return error; |
| 1909 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1910 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1911 | } |
| 1912 | |
| 1913 | /** |
| 1914 | * nfs3_decode_dirent - Decode a single NFSv3 directory entry stored in |
| 1915 | * the local page cache |
| 1916 | * @xdr: XDR stream where entry resides |
| 1917 | * @entry: buffer to fill in with entry data |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1918 | * @plus: boolean indicating whether this should be a readdirplus entry |
| 1919 | * |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1920 | * Returns zero if successful, otherwise a negative errno value is |
| 1921 | * returned. |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1922 | * |
| 1923 | * This function is not invoked during READDIR reply decoding, but |
| 1924 | * rather whenever an application invokes the getdents(2) system call |
| 1925 | * on a directory already in our cache. |
| 1926 | * |
| 1927 | * 3.3.16 entry3 |
| 1928 | * |
| 1929 | * struct entry3 { |
| 1930 | * fileid3 fileid; |
| 1931 | * filename3 name; |
| 1932 | * cookie3 cookie; |
| 1933 | * fhandle3 filehandle; |
| 1934 | * post_op_attr3 attributes; |
| 1935 | * entry3 *nextentry; |
| 1936 | * }; |
| 1937 | * |
| 1938 | * 3.3.17 entryplus3 |
| 1939 | * struct entryplus3 { |
| 1940 | * fileid3 fileid; |
| 1941 | * filename3 name; |
| 1942 | * cookie3 cookie; |
| 1943 | * post_op_attr name_attributes; |
| 1944 | * post_op_fh3 name_handle; |
| 1945 | * entryplus3 *nextentry; |
| 1946 | * }; |
| 1947 | */ |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1948 | int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, |
| 1949 | int plus) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1950 | { |
| 1951 | struct nfs_entry old = *entry; |
| 1952 | __be32 *p; |
| 1953 | int error; |
| 1954 | |
| 1955 | p = xdr_inline_decode(xdr, 4); |
| 1956 | if (unlikely(p == NULL)) |
| 1957 | goto out_overflow; |
| 1958 | if (*p == xdr_zero) { |
| 1959 | p = xdr_inline_decode(xdr, 4); |
| 1960 | if (unlikely(p == NULL)) |
| 1961 | goto out_overflow; |
| 1962 | if (*p == xdr_zero) |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1963 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1964 | entry->eof = 1; |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1965 | return -EBADCOOKIE; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1966 | } |
| 1967 | |
| 1968 | error = decode_fileid3(xdr, &entry->ino); |
| 1969 | if (unlikely(error)) |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1970 | return error; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1971 | |
| 1972 | error = decode_inline_filename3(xdr, &entry->name, &entry->len); |
| 1973 | if (unlikely(error)) |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1974 | return error; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1975 | |
| 1976 | entry->prev_cookie = entry->cookie; |
| 1977 | error = decode_cookie3(xdr, &entry->cookie); |
| 1978 | if (unlikely(error)) |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1979 | return error; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1980 | |
| 1981 | entry->d_type = DT_UNKNOWN; |
| 1982 | |
| 1983 | if (plus) { |
| 1984 | entry->fattr->valid = 0; |
| 1985 | error = decode_post_op_attr(xdr, entry->fattr); |
| 1986 | if (unlikely(error)) |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1987 | return error; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1988 | if (entry->fattr->valid & NFS_ATTR_FATTR_V3) |
| 1989 | entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); |
| 1990 | |
Trond Myklebust | 1ae04b2 | 2015-02-23 16:15:00 -0500 | [diff] [blame] | 1991 | if (entry->fattr->fileid != entry->ino) { |
| 1992 | entry->fattr->mounted_on_fileid = entry->ino; |
| 1993 | entry->fattr->valid |= NFS_ATTR_FATTR_MOUNTED_ON_FILEID; |
| 1994 | } |
| 1995 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1996 | /* In fact, a post_op_fh3: */ |
| 1997 | p = xdr_inline_decode(xdr, 4); |
| 1998 | if (unlikely(p == NULL)) |
| 1999 | goto out_overflow; |
| 2000 | if (*p != xdr_zero) { |
| 2001 | error = decode_nfs_fh3(xdr, entry->fh); |
| 2002 | if (unlikely(error)) { |
| 2003 | if (error == -E2BIG) |
| 2004 | goto out_truncated; |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 2005 | return error; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2006 | } |
| 2007 | } else |
| 2008 | zero_nfs_fh3(entry->fh); |
| 2009 | } |
| 2010 | |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 2011 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2012 | |
| 2013 | out_overflow: |
| 2014 | print_overflow_msg(__func__, xdr); |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 2015 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2016 | out_truncated: |
| 2017 | dprintk("NFS: directory entry contains invalid file handle\n"); |
| 2018 | *entry = old; |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 2019 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2020 | } |
| 2021 | |
| 2022 | /* |
| 2023 | * 3.3.16 READDIR3res |
| 2024 | * |
| 2025 | * struct dirlist3 { |
| 2026 | * entry3 *entries; |
| 2027 | * bool eof; |
| 2028 | * }; |
| 2029 | * |
| 2030 | * struct READDIR3resok { |
| 2031 | * post_op_attr dir_attributes; |
| 2032 | * cookieverf3 cookieverf; |
| 2033 | * dirlist3 reply; |
| 2034 | * }; |
| 2035 | * |
| 2036 | * struct READDIR3resfail { |
| 2037 | * post_op_attr dir_attributes; |
| 2038 | * }; |
| 2039 | * |
| 2040 | * union READDIR3res switch (nfsstat3 status) { |
| 2041 | * case NFS3_OK: |
| 2042 | * READDIR3resok resok; |
| 2043 | * default: |
| 2044 | * READDIR3resfail resfail; |
| 2045 | * }; |
| 2046 | * |
| 2047 | * Read the directory contents into the page cache, but otherwise |
| 2048 | * don't touch them. The actual decoding is done by nfs3_decode_entry() |
| 2049 | * during subsequent nfs_readdir() calls. |
| 2050 | */ |
| 2051 | static int decode_dirlist3(struct xdr_stream *xdr) |
| 2052 | { |
Trond Myklebust | 64bd577 | 2012-06-20 22:35:05 -0400 | [diff] [blame] | 2053 | return xdr_read_pages(xdr, xdr->buf->page_len); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2054 | } |
| 2055 | |
| 2056 | static int decode_readdir3resok(struct xdr_stream *xdr, |
| 2057 | struct nfs3_readdirres *result) |
| 2058 | { |
| 2059 | int error; |
| 2060 | |
| 2061 | error = decode_post_op_attr(xdr, result->dir_attr); |
| 2062 | if (unlikely(error)) |
| 2063 | goto out; |
| 2064 | /* XXX: do we need to check if result->verf != NULL ? */ |
| 2065 | error = decode_cookieverf3(xdr, result->verf); |
| 2066 | if (unlikely(error)) |
| 2067 | goto out; |
| 2068 | error = decode_dirlist3(xdr); |
| 2069 | out: |
| 2070 | return error; |
| 2071 | } |
| 2072 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2073 | static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req, |
| 2074 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2075 | struct nfs3_readdirres *result) |
| 2076 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2077 | enum nfs_stat status; |
| 2078 | int error; |
| 2079 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2080 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2081 | if (unlikely(error)) |
| 2082 | goto out; |
| 2083 | if (status != NFS3_OK) |
| 2084 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2085 | error = decode_readdir3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2086 | out: |
| 2087 | return error; |
| 2088 | out_default: |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2089 | error = decode_post_op_attr(xdr, result->dir_attr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2090 | if (unlikely(error)) |
| 2091 | goto out; |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2092 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2093 | } |
| 2094 | |
| 2095 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2096 | * 3.3.18 FSSTAT3res |
| 2097 | * |
| 2098 | * struct FSSTAT3resok { |
| 2099 | * post_op_attr obj_attributes; |
| 2100 | * size3 tbytes; |
| 2101 | * size3 fbytes; |
| 2102 | * size3 abytes; |
| 2103 | * size3 tfiles; |
| 2104 | * size3 ffiles; |
| 2105 | * size3 afiles; |
| 2106 | * uint32 invarsec; |
| 2107 | * }; |
| 2108 | * |
| 2109 | * struct FSSTAT3resfail { |
| 2110 | * post_op_attr obj_attributes; |
| 2111 | * }; |
| 2112 | * |
| 2113 | * union FSSTAT3res switch (nfsstat3 status) { |
| 2114 | * case NFS3_OK: |
| 2115 | * FSSTAT3resok resok; |
| 2116 | * default: |
| 2117 | * FSSTAT3resfail resfail; |
| 2118 | * }; |
| 2119 | */ |
| 2120 | static int decode_fsstat3resok(struct xdr_stream *xdr, |
| 2121 | struct nfs_fsstat *result) |
| 2122 | { |
| 2123 | __be32 *p; |
| 2124 | |
| 2125 | p = xdr_inline_decode(xdr, 8 * 6 + 4); |
| 2126 | if (unlikely(p == NULL)) |
| 2127 | goto out_overflow; |
| 2128 | p = xdr_decode_size3(p, &result->tbytes); |
| 2129 | p = xdr_decode_size3(p, &result->fbytes); |
| 2130 | p = xdr_decode_size3(p, &result->abytes); |
| 2131 | p = xdr_decode_size3(p, &result->tfiles); |
| 2132 | p = xdr_decode_size3(p, &result->ffiles); |
| 2133 | xdr_decode_size3(p, &result->afiles); |
| 2134 | /* ignore invarsec */ |
| 2135 | return 0; |
| 2136 | out_overflow: |
| 2137 | print_overflow_msg(__func__, xdr); |
| 2138 | return -EIO; |
| 2139 | } |
| 2140 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2141 | static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req, |
| 2142 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2143 | struct nfs_fsstat *result) |
| 2144 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2145 | enum nfs_stat status; |
| 2146 | int error; |
| 2147 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2148 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2149 | if (unlikely(error)) |
| 2150 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2151 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2152 | if (unlikely(error)) |
| 2153 | goto out; |
| 2154 | if (status != NFS3_OK) |
| 2155 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2156 | error = decode_fsstat3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2157 | out: |
| 2158 | return error; |
| 2159 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2160 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2161 | } |
| 2162 | |
| 2163 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2164 | * 3.3.19 FSINFO3res |
| 2165 | * |
| 2166 | * struct FSINFO3resok { |
| 2167 | * post_op_attr obj_attributes; |
| 2168 | * uint32 rtmax; |
| 2169 | * uint32 rtpref; |
| 2170 | * uint32 rtmult; |
| 2171 | * uint32 wtmax; |
| 2172 | * uint32 wtpref; |
| 2173 | * uint32 wtmult; |
| 2174 | * uint32 dtpref; |
| 2175 | * size3 maxfilesize; |
| 2176 | * nfstime3 time_delta; |
| 2177 | * uint32 properties; |
| 2178 | * }; |
| 2179 | * |
| 2180 | * struct FSINFO3resfail { |
| 2181 | * post_op_attr obj_attributes; |
| 2182 | * }; |
| 2183 | * |
| 2184 | * union FSINFO3res switch (nfsstat3 status) { |
| 2185 | * case NFS3_OK: |
| 2186 | * FSINFO3resok resok; |
| 2187 | * default: |
| 2188 | * FSINFO3resfail resfail; |
| 2189 | * }; |
| 2190 | */ |
| 2191 | static int decode_fsinfo3resok(struct xdr_stream *xdr, |
| 2192 | struct nfs_fsinfo *result) |
| 2193 | { |
| 2194 | __be32 *p; |
| 2195 | |
| 2196 | p = xdr_inline_decode(xdr, 4 * 7 + 8 + 8 + 4); |
| 2197 | if (unlikely(p == NULL)) |
| 2198 | goto out_overflow; |
| 2199 | result->rtmax = be32_to_cpup(p++); |
| 2200 | result->rtpref = be32_to_cpup(p++); |
| 2201 | result->rtmult = be32_to_cpup(p++); |
| 2202 | result->wtmax = be32_to_cpup(p++); |
| 2203 | result->wtpref = be32_to_cpup(p++); |
| 2204 | result->wtmult = be32_to_cpup(p++); |
| 2205 | result->dtpref = be32_to_cpup(p++); |
| 2206 | p = xdr_decode_size3(p, &result->maxfilesize); |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 2207 | xdr_decode_nfstime3(p, &result->time_delta); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2208 | |
| 2209 | /* ignore properties */ |
| 2210 | result->lease_time = 0; |
| 2211 | return 0; |
| 2212 | out_overflow: |
| 2213 | print_overflow_msg(__func__, xdr); |
| 2214 | return -EIO; |
| 2215 | } |
| 2216 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2217 | static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req, |
| 2218 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2219 | struct nfs_fsinfo *result) |
| 2220 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2221 | enum nfs_stat status; |
| 2222 | int error; |
| 2223 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2224 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2225 | if (unlikely(error)) |
| 2226 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2227 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2228 | if (unlikely(error)) |
| 2229 | goto out; |
| 2230 | if (status != NFS3_OK) |
| 2231 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2232 | error = decode_fsinfo3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2233 | out: |
| 2234 | return error; |
| 2235 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2236 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2237 | } |
| 2238 | |
| 2239 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2240 | * 3.3.20 PATHCONF3res |
| 2241 | * |
| 2242 | * struct PATHCONF3resok { |
| 2243 | * post_op_attr obj_attributes; |
| 2244 | * uint32 linkmax; |
| 2245 | * uint32 name_max; |
| 2246 | * bool no_trunc; |
| 2247 | * bool chown_restricted; |
| 2248 | * bool case_insensitive; |
| 2249 | * bool case_preserving; |
| 2250 | * }; |
| 2251 | * |
| 2252 | * struct PATHCONF3resfail { |
| 2253 | * post_op_attr obj_attributes; |
| 2254 | * }; |
| 2255 | * |
| 2256 | * union PATHCONF3res switch (nfsstat3 status) { |
| 2257 | * case NFS3_OK: |
| 2258 | * PATHCONF3resok resok; |
| 2259 | * default: |
| 2260 | * PATHCONF3resfail resfail; |
| 2261 | * }; |
| 2262 | */ |
| 2263 | static int decode_pathconf3resok(struct xdr_stream *xdr, |
| 2264 | struct nfs_pathconf *result) |
| 2265 | { |
| 2266 | __be32 *p; |
| 2267 | |
| 2268 | p = xdr_inline_decode(xdr, 4 * 6); |
| 2269 | if (unlikely(p == NULL)) |
| 2270 | goto out_overflow; |
| 2271 | result->max_link = be32_to_cpup(p++); |
| 2272 | result->max_namelen = be32_to_cpup(p); |
| 2273 | /* ignore remaining fields */ |
| 2274 | return 0; |
| 2275 | out_overflow: |
| 2276 | print_overflow_msg(__func__, xdr); |
| 2277 | return -EIO; |
| 2278 | } |
| 2279 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2280 | static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req, |
| 2281 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2282 | struct nfs_pathconf *result) |
| 2283 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2284 | enum nfs_stat status; |
| 2285 | int error; |
| 2286 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2287 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2288 | if (unlikely(error)) |
| 2289 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2290 | error = decode_post_op_attr(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2291 | if (unlikely(error)) |
| 2292 | goto out; |
| 2293 | if (status != NFS3_OK) |
| 2294 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2295 | error = decode_pathconf3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2296 | out: |
| 2297 | return error; |
| 2298 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2299 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2300 | } |
| 2301 | |
| 2302 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2303 | * 3.3.21 COMMIT3res |
| 2304 | * |
| 2305 | * struct COMMIT3resok { |
| 2306 | * wcc_data file_wcc; |
| 2307 | * writeverf3 verf; |
| 2308 | * }; |
| 2309 | * |
| 2310 | * struct COMMIT3resfail { |
| 2311 | * wcc_data file_wcc; |
| 2312 | * }; |
| 2313 | * |
| 2314 | * union COMMIT3res switch (nfsstat3 status) { |
| 2315 | * case NFS3_OK: |
| 2316 | * COMMIT3resok resok; |
| 2317 | * default: |
| 2318 | * COMMIT3resfail resfail; |
| 2319 | * }; |
| 2320 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2321 | static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req, |
| 2322 | struct xdr_stream *xdr, |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 2323 | struct nfs_commitres *result) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2324 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2325 | enum nfs_stat status; |
| 2326 | int error; |
| 2327 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2328 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2329 | if (unlikely(error)) |
| 2330 | goto out; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2331 | error = decode_wcc_data(xdr, result->fattr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2332 | if (unlikely(error)) |
| 2333 | goto out; |
Peng Tao | aabff4d | 2014-08-27 10:47:14 +0800 | [diff] [blame] | 2334 | result->op_status = status; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2335 | if (status != NFS3_OK) |
| 2336 | goto out_status; |
Trond Myklebust | 2f2c63b | 2012-06-08 11:56:09 -0400 | [diff] [blame] | 2337 | error = decode_writeverf3(xdr, &result->verf->verifier); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2338 | out: |
| 2339 | return error; |
| 2340 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2341 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2342 | } |
| 2343 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2344 | #ifdef CONFIG_NFS_V3_ACL |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2345 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2346 | static inline int decode_getacl3resok(struct xdr_stream *xdr, |
| 2347 | struct nfs3_getaclres *result) |
| 2348 | { |
| 2349 | struct posix_acl **acl; |
| 2350 | unsigned int *aclcnt; |
| 2351 | size_t hdrlen; |
| 2352 | int error; |
| 2353 | |
| 2354 | error = decode_post_op_attr(xdr, result->fattr); |
| 2355 | if (unlikely(error)) |
| 2356 | goto out; |
| 2357 | error = decode_uint32(xdr, &result->mask); |
| 2358 | if (unlikely(error)) |
| 2359 | goto out; |
| 2360 | error = -EINVAL; |
| 2361 | if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) |
| 2362 | goto out; |
| 2363 | |
Trond Myklebust | 1aecca3 | 2012-06-21 11:41:29 -0400 | [diff] [blame] | 2364 | hdrlen = xdr_stream_pos(xdr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2365 | |
| 2366 | acl = NULL; |
| 2367 | if (result->mask & NFS_ACL) |
| 2368 | acl = &result->acl_access; |
| 2369 | aclcnt = NULL; |
| 2370 | if (result->mask & NFS_ACLCNT) |
| 2371 | aclcnt = &result->acl_access_count; |
| 2372 | error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl); |
| 2373 | if (unlikely(error <= 0)) |
| 2374 | goto out; |
| 2375 | |
| 2376 | acl = NULL; |
| 2377 | if (result->mask & NFS_DFACL) |
| 2378 | acl = &result->acl_default; |
| 2379 | aclcnt = NULL; |
| 2380 | if (result->mask & NFS_DFACLCNT) |
| 2381 | aclcnt = &result->acl_default_count; |
| 2382 | error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl); |
| 2383 | if (unlikely(error <= 0)) |
| 2384 | return error; |
| 2385 | error = 0; |
| 2386 | out: |
| 2387 | return error; |
| 2388 | } |
| 2389 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2390 | static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req, |
| 2391 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2392 | struct nfs3_getaclres *result) |
| 2393 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2394 | enum nfs_stat status; |
| 2395 | int error; |
| 2396 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2397 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2398 | if (unlikely(error)) |
| 2399 | goto out; |
| 2400 | if (status != NFS3_OK) |
| 2401 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2402 | error = decode_getacl3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2403 | out: |
| 2404 | return error; |
| 2405 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2406 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2407 | } |
| 2408 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2409 | static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req, |
| 2410 | struct xdr_stream *xdr, |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2411 | struct nfs_fattr *result) |
| 2412 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2413 | enum nfs_stat status; |
| 2414 | int error; |
| 2415 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2416 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2417 | if (unlikely(error)) |
| 2418 | goto out; |
| 2419 | if (status != NFS3_OK) |
| 2420 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2421 | error = decode_post_op_attr(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2422 | out: |
| 2423 | return error; |
| 2424 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2425 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2426 | } |
| 2427 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2428 | #endif /* CONFIG_NFS_V3_ACL */ |
| 2429 | |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2430 | |
| 2431 | /* |
| 2432 | * We need to translate between nfs status return values and |
| 2433 | * the local errno values which may not be the same. |
| 2434 | */ |
| 2435 | static const struct { |
| 2436 | int stat; |
| 2437 | int errno; |
| 2438 | } nfs_errtbl[] = { |
| 2439 | { NFS_OK, 0 }, |
| 2440 | { NFSERR_PERM, -EPERM }, |
| 2441 | { NFSERR_NOENT, -ENOENT }, |
| 2442 | { NFSERR_IO, -errno_NFSERR_IO}, |
| 2443 | { NFSERR_NXIO, -ENXIO }, |
| 2444 | /* { NFSERR_EAGAIN, -EAGAIN }, */ |
| 2445 | { NFSERR_ACCES, -EACCES }, |
| 2446 | { NFSERR_EXIST, -EEXIST }, |
| 2447 | { NFSERR_XDEV, -EXDEV }, |
| 2448 | { NFSERR_NODEV, -ENODEV }, |
| 2449 | { NFSERR_NOTDIR, -ENOTDIR }, |
| 2450 | { NFSERR_ISDIR, -EISDIR }, |
| 2451 | { NFSERR_INVAL, -EINVAL }, |
| 2452 | { NFSERR_FBIG, -EFBIG }, |
| 2453 | { NFSERR_NOSPC, -ENOSPC }, |
| 2454 | { NFSERR_ROFS, -EROFS }, |
| 2455 | { NFSERR_MLINK, -EMLINK }, |
| 2456 | { NFSERR_NAMETOOLONG, -ENAMETOOLONG }, |
| 2457 | { NFSERR_NOTEMPTY, -ENOTEMPTY }, |
| 2458 | { NFSERR_DQUOT, -EDQUOT }, |
| 2459 | { NFSERR_STALE, -ESTALE }, |
| 2460 | { NFSERR_REMOTE, -EREMOTE }, |
| 2461 | #ifdef EWFLUSH |
| 2462 | { NFSERR_WFLUSH, -EWFLUSH }, |
| 2463 | #endif |
| 2464 | { NFSERR_BADHANDLE, -EBADHANDLE }, |
| 2465 | { NFSERR_NOT_SYNC, -ENOTSYNC }, |
| 2466 | { NFSERR_BAD_COOKIE, -EBADCOOKIE }, |
| 2467 | { NFSERR_NOTSUPP, -ENOTSUPP }, |
| 2468 | { NFSERR_TOOSMALL, -ETOOSMALL }, |
| 2469 | { NFSERR_SERVERFAULT, -EREMOTEIO }, |
| 2470 | { NFSERR_BADTYPE, -EBADTYPE }, |
| 2471 | { NFSERR_JUKEBOX, -EJUKEBOX }, |
| 2472 | { -1, -EIO } |
| 2473 | }; |
| 2474 | |
| 2475 | /** |
| 2476 | * nfs3_stat_to_errno - convert an NFS status code to a local errno |
| 2477 | * @status: NFS status code to convert |
| 2478 | * |
| 2479 | * Returns a local errno value, or -EIO if the NFS status code is |
| 2480 | * not recognized. This function is used jointly by NFSv2 and NFSv3. |
| 2481 | */ |
| 2482 | static int nfs3_stat_to_errno(enum nfs_stat status) |
| 2483 | { |
| 2484 | int i; |
| 2485 | |
| 2486 | for (i = 0; nfs_errtbl[i].stat != -1; i++) { |
| 2487 | if (nfs_errtbl[i].stat == (int)status) |
| 2488 | return nfs_errtbl[i].errno; |
| 2489 | } |
| 2490 | dprintk("NFS: Unrecognized nfs status value: %u\n", status); |
| 2491 | return nfs_errtbl[i].errno; |
| 2492 | } |
| 2493 | |
| 2494 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2495 | #define PROC(proc, argtype, restype, timer) \ |
| 2496 | [NFS3PROC_##proc] = { \ |
| 2497 | .p_proc = NFS3PROC_##proc, \ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 2498 | .p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2499 | .p_decode = (kxdrdproc_t)nfs3_xdr_dec_##restype##3res, \ |
Chuck Lever | ad96b5b | 2010-12-14 14:56:01 +0000 | [diff] [blame] | 2500 | .p_arglen = NFS3_##argtype##args_sz, \ |
Chuck Lever | f5fc3c50 | 2010-12-14 14:56:42 +0000 | [diff] [blame] | 2501 | .p_replen = NFS3_##restype##res_sz, \ |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 2502 | .p_timer = timer, \ |
| 2503 | .p_statidx = NFS3PROC_##proc, \ |
| 2504 | .p_name = #proc, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2505 | } |
| 2506 | |
| 2507 | struct rpc_procinfo nfs3_procedures[] = { |
Chuck Lever | f5fc3c50 | 2010-12-14 14:56:42 +0000 | [diff] [blame] | 2508 | PROC(GETATTR, getattr, getattr, 1), |
| 2509 | PROC(SETATTR, setattr, setattr, 0), |
| 2510 | PROC(LOOKUP, lookup, lookup, 2), |
| 2511 | PROC(ACCESS, access, access, 1), |
| 2512 | PROC(READLINK, readlink, readlink, 3), |
| 2513 | PROC(READ, read, read, 3), |
| 2514 | PROC(WRITE, write, write, 4), |
| 2515 | PROC(CREATE, create, create, 0), |
| 2516 | PROC(MKDIR, mkdir, create, 0), |
| 2517 | PROC(SYMLINK, symlink, create, 0), |
| 2518 | PROC(MKNOD, mknod, create, 0), |
| 2519 | PROC(REMOVE, remove, remove, 0), |
| 2520 | PROC(RMDIR, lookup, setattr, 0), |
| 2521 | PROC(RENAME, rename, rename, 0), |
| 2522 | PROC(LINK, link, link, 0), |
| 2523 | PROC(READDIR, readdir, readdir, 3), |
| 2524 | PROC(READDIRPLUS, readdirplus, readdir, 3), |
| 2525 | PROC(FSSTAT, getattr, fsstat, 0), |
| 2526 | PROC(FSINFO, getattr, fsinfo, 0), |
| 2527 | PROC(PATHCONF, getattr, pathconf, 0), |
| 2528 | PROC(COMMIT, commit, commit, 5), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2529 | }; |
| 2530 | |
Trond Myklebust | a613fa1 | 2012-01-20 13:53:56 -0500 | [diff] [blame] | 2531 | const struct rpc_version nfs_version3 = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2532 | .number = 3, |
Tobias Klauser | e8c96f8 | 2006-03-24 03:15:34 -0800 | [diff] [blame] | 2533 | .nrprocs = ARRAY_SIZE(nfs3_procedures), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2534 | .procs = nfs3_procedures |
| 2535 | }; |
| 2536 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2537 | #ifdef CONFIG_NFS_V3_ACL |
| 2538 | static struct rpc_procinfo nfs3_acl_procedures[] = { |
| 2539 | [ACLPROC3_GETACL] = { |
| 2540 | .p_proc = ACLPROC3_GETACL, |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 2541 | .p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args, |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2542 | .p_decode = (kxdrdproc_t)nfs3_xdr_dec_getacl3res, |
Chuck Lever | 2bea90d | 2007-03-29 16:47:53 -0400 | [diff] [blame] | 2543 | .p_arglen = ACL3_getaclargs_sz, |
| 2544 | .p_replen = ACL3_getaclres_sz, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2545 | .p_timer = 1, |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 2546 | .p_name = "GETACL", |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2547 | }, |
| 2548 | [ACLPROC3_SETACL] = { |
| 2549 | .p_proc = ACLPROC3_SETACL, |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 2550 | .p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args, |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2551 | .p_decode = (kxdrdproc_t)nfs3_xdr_dec_setacl3res, |
Chuck Lever | 2bea90d | 2007-03-29 16:47:53 -0400 | [diff] [blame] | 2552 | .p_arglen = ACL3_setaclargs_sz, |
| 2553 | .p_replen = ACL3_setaclres_sz, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2554 | .p_timer = 0, |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 2555 | .p_name = "SETACL", |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2556 | }, |
| 2557 | }; |
| 2558 | |
Trond Myklebust | a613fa1 | 2012-01-20 13:53:56 -0500 | [diff] [blame] | 2559 | const struct rpc_version nfsacl_version3 = { |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2560 | .number = 3, |
| 2561 | .nrprocs = sizeof(nfs3_acl_procedures)/ |
| 2562 | sizeof(nfs3_acl_procedures[0]), |
| 2563 | .procs = nfs3_acl_procedures, |
| 2564 | }; |
| 2565 | #endif /* CONFIG_NFS_V3_ACL */ |