fs/nfs/nfs3xdr.c

135 static void encode_uint32(struct xdr_stream *xdr, u32 value)
137 	__be32 *p = xdr_reserve_space(xdr, 4);
141 static int decode_uint32(struct xdr_stream *xdr, u32 *value)
145 	p = xdr_inline_decode(xdr, 4);
152 static int decode_uint64(struct xdr_stream *xdr, u64 *value)
156 	p = xdr_inline_decode(xdr, 8);
173 static int decode_fileid3(struct xdr_stream *xdr, u64 *fileid)
175 	return decode_uint64(xdr, fileid);
183 static void encode_filename3(struct xdr_stream *xdr,
189 	p = xdr_reserve_space(xdr, 4 + length);
193 static int decode_inline_filename3(struct xdr_stream *xdr,
199 	p = xdr_inline_decode(xdr, 4);
205 	p = xdr_inline_decode(xdr, count);
222 static void encode_nfspath3(struct xdr_stream *xdr, struct page **pages,
225 	encode_uint32(xdr, length);
226 	xdr_write_pages(xdr, pages, 0, length);
229 static int decode_nfspath3(struct xdr_stream *xdr)
234 	p = xdr_inline_decode(xdr, 4);
238 	if (unlikely(count >= xdr->buf->page_len || count > NFS3_MAXPATHLEN))
240 	recvd = xdr_read_pages(xdr, count);
243 	xdr_terminate_string(xdr->buf, count);
265 static int decode_cookie3(struct xdr_stream *xdr, u64 *cookie)
267 	return decode_uint64(xdr, cookie);
281 static int decode_cookieverf3(struct xdr_stream *xdr, __be32 *verifier)
285 	p = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE);
297 static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier)
301 	p = xdr_reserve_space(xdr, NFS3_CREATEVERFSIZE);
305 static int decode_writeverf3(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
309 	p = xdr_inline_decode(xdr, NFS3_WRITEVERFSIZE);
336 static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status)
340 	p = xdr_inline_decode(xdr, 4);
349 	trace_nfs_xdr_status(xdr, (int)*status);
366 static void encode_ftype3(struct xdr_stream *xdr, const u32 type)
368 	encode_uint32(xdr, type);
390 static void encode_specdata3(struct xdr_stream *xdr, const dev_t rdev)
394 	p = xdr_reserve_space(xdr, 8);
418 static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh)
423 	p = xdr_reserve_space(xdr, 4 + fh->size);
427 static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh)
432 	p = xdr_inline_decode(xdr, 4);
438 	p = xdr_inline_decode(xdr, length);
445 	trace_nfs_xdr_bad_filehandle(xdr, NFSERR_BADHANDLE);
536 static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr,
561 	p = xdr_reserve_space(xdr, nbytes);
623 static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr,
629 	p = xdr_inline_decode(xdr, NFS3_fattr_sz << 2);
677 static int decode_post_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
682 	p = xdr_inline_decode(xdr, 4);
686 		return decode_fattr3(xdr, fattr, userns);
698 static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
702 	p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2);
735 static int decode_pre_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
739 	p = xdr_inline_decode(xdr, 4);
743 		return decode_wcc_attr(xdr, fattr);
747 static int decode_wcc_data(struct xdr_stream *xdr, struct nfs_fattr *fattr,
752 	error = decode_pre_op_attr(xdr, fattr);
755 	error = decode_post_op_attr(xdr, fattr, userns);
770 static int decode_post_op_fh3(struct xdr_stream *xdr, struct nfs_fh *fh)
772 	__be32 *p = xdr_inline_decode(xdr, 4);
776 		return decode_nfs_fh3(xdr, fh);
789 static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh,
792 	encode_nfs_fh3(xdr, fh);
793 	encode_filename3(xdr, name, length);
812 				      struct xdr_stream *xdr,
817 	encode_nfs_fh3(xdr, fh);
836 static void encode_sattrguard3(struct xdr_stream *xdr,
842 		p = xdr_reserve_space(xdr, 4 + 8);
846 		p = xdr_reserve_space(xdr, 4);
852 				      struct xdr_stream *xdr,
856 	encode_nfs_fh3(xdr, args->fh);
857 	encode_sattr3(xdr, args->sattr, rpc_rqst_userns(req));
858 	encode_sattrguard3(xdr, args);
869 				     struct xdr_stream *xdr,
874 	encode_diropargs3(xdr, args->fh, args->name, args->len);
885 static void encode_access3args(struct xdr_stream *xdr,
888 	encode_nfs_fh3(xdr, args->fh);
889 	encode_uint32(xdr, args->access);
893 				     struct xdr_stream *xdr,
898 	encode_access3args(xdr, args);
909 				       struct xdr_stream *xdr,
914 	encode_nfs_fh3(xdr, args->fh);
928 static void encode_read3args(struct xdr_stream *xdr,
933 	encode_nfs_fh3(xdr, args->fh);
935 	p = xdr_reserve_space(xdr, 8 + 4);
941 				   struct xdr_stream *xdr,
948 	encode_read3args(xdr, args);
971 static void encode_write3args(struct xdr_stream *xdr,
976 	encode_nfs_fh3(xdr, args->fh);
978 	p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4);
983 	xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
987 				    struct xdr_stream *xdr,
992 	encode_write3args(xdr, args);
993 	xdr->buf->flags |= XDRBUF_WRITE;
1018 static void encode_createhow3(struct xdr_stream *xdr,
1022 	encode_uint32(xdr, args->createmode);
1026 		encode_sattr3(xdr, args->sattr, userns);
1029 		encode_createverf3(xdr, args->verifier);
1037 				     struct xdr_stream *xdr,
1042 	encode_diropargs3(xdr, args->fh, args->name, args->len);
1043 	encode_createhow3(xdr, args, rpc_rqst_userns(req));
1055 				    struct xdr_stream *xdr,
1060 	encode_diropargs3(xdr, args->fh, args->name, args->len);
1061 	encode_sattr3(xdr, args->sattr, rpc_rqst_userns(req));
1077 static void encode_symlinkdata3(struct xdr_stream *xdr,
1083 	encode_sattr3(xdr, args->sattr, userns);
1084 	encode_nfspath3(xdr, args->pages, args->pathlen);
1088 				      struct xdr_stream *xdr,
1093 	encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen);
1094 	encode_symlinkdata3(xdr, args, rpc_rqst_userns(req));
1095 	xdr->buf->flags |= XDRBUF_WRITE;
1122 static void encode_devicedata3(struct xdr_stream *xdr,
1126 	encode_sattr3(xdr, args->sattr, userns);
1127 	encode_specdata3(xdr, args->rdev);
1130 static void encode_mknoddata3(struct xdr_stream *xdr,
1134 	encode_ftype3(xdr, args->type);
1138 		encode_devicedata3(xdr, args, userns);
1142 		encode_sattr3(xdr, args->sattr, userns);
1153 				    struct xdr_stream *xdr,
1158 	encode_diropargs3(xdr, args->fh, args->name, args->len);
1159 	encode_mknoddata3(xdr, args, rpc_rqst_userns(req));
1170 				     struct xdr_stream *xdr,
1175 	encode_diropargs3(xdr, args->fh, args->name.name, args->name.len);
1187 				     struct xdr_stream *xdr,
1194 	encode_diropargs3(xdr, args->old_dir, old->name, old->len);
1195 	encode_diropargs3(xdr, args->new_dir, new->name, new->len);
1207 				   struct xdr_stream *xdr,
1212 	encode_nfs_fh3(xdr, args->fromfh);
1213 	encode_diropargs3(xdr, args->tofh, args->toname, args->tolen);
1226 static void encode_readdir3args(struct xdr_stream *xdr,
1231 	encode_nfs_fh3(xdr, args->fh);
1233 	p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4);
1240 				      struct xdr_stream *xdr,
1245 	encode_readdir3args(xdr, args);
1261 static void encode_readdirplus3args(struct xdr_stream *xdr,
1268 	encode_nfs_fh3(xdr, args->fh);
1270 	p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4);
1283 					  struct xdr_stream *xdr,
1288 	encode_readdirplus3args(xdr, args);
1302 static void encode_commit3args(struct xdr_stream *xdr,
1307 	encode_nfs_fh3(xdr, args->fh);
1309 	p = xdr_reserve_space(xdr, 8 + 4);
1315 				     struct xdr_stream *xdr,
1320 	encode_commit3args(xdr, args);
1326 				     struct xdr_stream *xdr,
1331 	encode_nfs_fh3(xdr, args->fh);
1332 	encode_uint32(xdr, args->mask);
1342 				     struct xdr_stream *xdr,
1349 	encode_nfs_fh3(xdr, NFS_FH(args->inode));
1350 	encode_uint32(xdr, args->mask);
1354 		xdr_write_pages(xdr, args->pages, 0, args->len);
1356 		xdr_reserve_space(xdr, args->len);
1358 	error = nfsacl_encode(xdr->buf, base, args->inode,
1363 	error = nfsacl_encode(xdr->buf, base + error, args->inode,
1394 				    struct xdr_stream *xdr,
1400 	error = decode_nfsstat3(xdr, &status);
1405 	error = decode_fattr3(xdr, result, rpc_rqst_userns(req));
1431 				    struct xdr_stream *xdr,
1437 	error = decode_nfsstat3(xdr, &status);
1440 	error = decode_wcc_data(xdr, result, rpc_rqst_userns(req));
1472 				   struct xdr_stream *xdr,
1480 	error = decode_nfsstat3(xdr, &status);
1485 	error = decode_nfs_fh3(xdr, result->fh);
1488 	error = decode_post_op_attr(xdr, result->fattr, userns);
1491 	error = decode_post_op_attr(xdr, result->dir_attr, userns);
1495 	error = decode_post_op_attr(xdr, result->dir_attr, userns);
1521 				   struct xdr_stream *xdr,
1528 	error = decode_nfsstat3(xdr, &status);
1531 	error = decode_post_op_attr(xdr, result->fattr, rpc_rqst_userns(req));
1536 	error = decode_uint32(xdr, &result->access);
1563 				     struct xdr_stream *xdr,
1569 	error = decode_nfsstat3(xdr, &status);
1572 	error = decode_post_op_attr(xdr, result, rpc_rqst_userns(req));
1577 	error = decode_nfspath3(xdr);
1605 static int decode_read3resok(struct xdr_stream *xdr,
1611 	p = xdr_inline_decode(xdr, 4 + 4 + 4);
1619 	recvd = xdr_read_pages(xdr, count);
1638 static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr,
1646 	pos = xdr_stream_pos(xdr);
1647 	error = decode_nfsstat3(xdr, &status);
1650 	error = decode_post_op_attr(xdr, result->fattr, rpc_rqst_userns(req));
1656 	result->replen = 3 + ((xdr_stream_pos(xdr) - pos) >> 2);
1657 	error = decode_read3resok(xdr, result);
1691 static int decode_write3resok(struct xdr_stream *xdr,
1696 	p = xdr_inline_decode(xdr, 4 + 4);
1703 	if (decode_writeverf3(xdr, &result->verf->verifier))
1711 static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr,
1718 	error = decode_nfsstat3(xdr, &status);
1721 	error = decode_wcc_data(xdr, result->fattr, rpc_rqst_userns(req));
1727 	error = decode_write3resok(xdr, result);
1754 static int decode_create3resok(struct xdr_stream *xdr,
1760 	error = decode_post_op_fh3(xdr, result->fh);
1763 	error = decode_post_op_attr(xdr, result->fattr, userns);
1772 	error = decode_wcc_data(xdr, result->dir_attr, userns);
1778 				   struct xdr_stream *xdr,
1786 	error = decode_nfsstat3(xdr, &status);
1791 	error = decode_create3resok(xdr, result, userns);
1795 	error = decode_wcc_data(xdr, result->dir_attr, userns);
1820 				   struct xdr_stream *xdr,
1827 	error = decode_nfsstat3(xdr, &status);
1830 	error = decode_wcc_data(xdr, result->dir_attr, rpc_rqst_userns(req));
1862 				   struct xdr_stream *xdr,
1870 	error = decode_nfsstat3(xdr, &status);
1873 	error = decode_wcc_data(xdr, result->old_fattr, userns);
1876 	error = decode_wcc_data(xdr, result->new_fattr, userns);
1907 static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, struct xdr_stream *xdr,
1915 	error = decode_nfsstat3(xdr, &status);
1918 	error = decode_post_op_attr(xdr, result->fattr, userns);
1921 	error = decode_wcc_data(xdr, result->dir_attr, userns);
1935  * @xdr: XDR stream where entry resides
1967 int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
1975 	p = xdr_inline_decode(xdr, 4);
1979 		p = xdr_inline_decode(xdr, 4);
1988 	error = decode_fileid3(xdr, &entry->ino);
1992 	error = decode_inline_filename3(xdr, &entry->name, &entry->len);
1996 	error = decode_cookie3(xdr, &new_cookie);
2004 		error = decode_post_op_attr(xdr, entry->fattr, userns);
2016 		p = xdr_inline_decode(xdr, 4);
2020 			error = decode_nfs_fh3(xdr, entry->fh);
2061 static int decode_dirlist3(struct xdr_stream *xdr)
2063 	return xdr_read_pages(xdr, xdr->buf->page_len);
2066 static int decode_readdir3resok(struct xdr_stream *xdr,
2072 	error = decode_post_op_attr(xdr, result->dir_attr, userns);
2076 	error = decode_cookieverf3(xdr, result->verf);
2079 	error = decode_dirlist3(xdr);
2085 				    struct xdr_stream *xdr,
2092 	error = decode_nfsstat3(xdr, &status);
2097 	error = decode_readdir3resok(xdr, result, rpc_rqst_userns(req));
2101 	error = decode_post_op_attr(xdr, result->dir_attr, rpc_rqst_userns(req));
2132 static int decode_fsstat3resok(struct xdr_stream *xdr,
2137 	p = xdr_inline_decode(xdr, 8 * 6 + 4);
2151 				   struct xdr_stream *xdr,
2158 	error = decode_nfsstat3(xdr, &status);
2161 	error = decode_post_op_attr(xdr, result->fattr, rpc_rqst_userns(req));
2166 	error = decode_fsstat3resok(xdr, result);
2201 static int decode_fsinfo3resok(struct xdr_stream *xdr,
2206 	p = xdr_inline_decode(xdr, 4 * 7 + 8 + 8 + 4);
2227 				   struct xdr_stream *xdr,
2234 	error = decode_nfsstat3(xdr, &status);
2237 	error = decode_post_op_attr(xdr, result->fattr, rpc_rqst_userns(req));
2242 	error = decode_fsinfo3resok(xdr, result);
2273 static int decode_pathconf3resok(struct xdr_stream *xdr,
2278 	p = xdr_inline_decode(xdr, 4 * 6);
2288 				     struct xdr_stream *xdr,
2295 	error = decode_nfsstat3(xdr, &status);
2298 	error = decode_post_op_attr(xdr, result->fattr, rpc_rqst_userns(req));
2303 	error = decode_pathconf3resok(xdr, result);
2330 				   struct xdr_stream *xdr,
2338 	error = decode_nfsstat3(xdr, &status);
2341 	error = decode_wcc_data(xdr, result->fattr, rpc_rqst_userns(req));
2347 	error = decode_writeverf3(xdr, &verf->verifier);
2358 static inline int decode_getacl3resok(struct xdr_stream *xdr,
2367 	error = decode_post_op_attr(xdr, result->fattr, userns);
2370 	error = decode_uint32(xdr, &result->mask);
2377 	hdrlen = xdr_stream_pos(xdr);
2385 	error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl);
2395 	error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl);
2404 				   struct xdr_stream *xdr,
2410 	error = decode_nfsstat3(xdr, &status);
2415 	error = decode_getacl3resok(xdr, result, rpc_rqst_userns(req));
2423 				   struct xdr_stream *xdr,
2429 	error = decode_nfsstat3(xdr, &status);
2434 	error = decode_post_op_attr(xdr, result, rpc_rqst_userns(req));