1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 * 21 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 22 * Use is subject to license terms. 23 * 24 * Copyright 2013 Nexenta Systems, Inc. All rights reserved. 25 */ 26 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 27 /* All Rights Reserved */ 28 /* 29 * Portions of this source code were derived from Berkeley 30 * 4.3 BSD under license from the Regents of the University of 31 * California. 32 */ 33 34 /* 35 * xdr.h, External Data Representation Serialization Routines. 36 * 37 */ 38 39 #ifndef _RPC_XDR_H 40 #define _RPC_XDR_H 41 42 #include <sys/byteorder.h> /* For all ntoh* and hton*() kind of macros */ 43 #include <rpc/types.h> /* For all ntoh* and hton*() kind of macros */ 44 #if !defined(_KERNEL) && !defined(_FAKE_KERNEL) 45 #include <stdio.h> /* defines FILE *, used in ANSI C function prototypes */ 46 #else /* _KERNEL */ 47 #include <sys/stream.h> 48 #endif /* _KERNEL */ 49 50 #ifdef __cplusplus 51 extern "C" { 52 #endif 53 54 /* 55 * XDR provides a conventional way for converting between C data 56 * types and an external bit-string representation. Library supplied 57 * routines provide for the conversion on built-in C data types. These 58 * routines and utility routines defined here are used to help implement 59 * a type encode/decode routine for each user-defined type. 60 * 61 * Each data type provides a single procedure which takes two arguments: 62 * 63 * bool_t 64 * xdrproc(xdrs, argresp) 65 * XDR *xdrs; 66 * <type> *argresp; 67 * 68 * xdrs is an instance of a XDR handle, to which or from which the data 69 * type is to be converted. argresp is a pointer to the structure to be 70 * converted. The XDR handle contains an operation field which indicates 71 * which of the operations (ENCODE, DECODE * or FREE) is to be performed. 72 * 73 * XDR_DECODE may allocate space if the pointer argresp is null. This 74 * data can be freed with the XDR_FREE operation. 75 * 76 * We write only one procedure per data type to make it easy 77 * to keep the encode and decode procedures for a data type consistent. 78 * In many cases the same code performs all operations on a user defined type, 79 * because all the hard work is done in the component type routines. 80 * decode as a series of calls on the nested data types. 81 */ 82 83 /* 84 * Xdr operations. XDR_ENCODE causes the type to be encoded into the 85 * stream. XDR_DECODE causes the type to be extracted from the stream. 86 * XDR_FREE can be used to release the space allocated by an XDR_DECODE 87 * request. 88 */ 89 enum xdr_op { 90 XDR_ENCODE = 0, 91 XDR_DECODE = 1, 92 XDR_FREE = 2 93 }; 94 95 /* 96 * This is the number of bytes per unit of external data. 97 */ 98 #define BYTES_PER_XDR_UNIT (4) 99 #define RNDUP(x) ((((x) + BYTES_PER_XDR_UNIT - 1) / BYTES_PER_XDR_UNIT) \ 100 * BYTES_PER_XDR_UNIT) 101 102 /* 103 * The XDR handle. 104 * Contains operation which is being applied to the stream, 105 * an operations vector for the paticular implementation (e.g. see xdr_mem.c), 106 * and two private fields for the use of the particular impelementation. 107 * 108 * PSARC 2003/523 Contract Private Interface 109 * XDR 110 * Changes must be reviewed by Solaris File Sharing 111 * Changes must be communicated to contract-2003-523@sun.com 112 */ 113 typedef struct XDR { 114 enum xdr_op x_op; /* operation; fast additional param */ 115 struct xdr_ops *x_ops; 116 caddr_t x_public; /* users' data */ 117 caddr_t x_private; /* pointer to private data */ 118 caddr_t x_base; /* private used for position info */ 119 int x_handy; /* extra private word */ 120 } XDR; 121 122 /* 123 * PSARC 2003/523 Contract Private Interface 124 * xdr_ops 125 * Changes must be reviewed by Solaris File Sharing 126 * Changes must be communicated to contract-2003-523@sun.com 127 */ 128 struct xdr_ops { 129 #ifdef __STDC__ 130 #if !defined(_KERNEL) 131 bool_t (*x_getlong)(struct XDR *, long *); 132 /* get a long from underlying stream */ 133 bool_t (*x_putlong)(struct XDR *, long *); 134 /* put a long to " */ 135 #endif /* KERNEL */ 136 bool_t (*x_getbytes)(struct XDR *, caddr_t, int); 137 /* get some bytes from " */ 138 bool_t (*x_putbytes)(struct XDR *, caddr_t, int); 139 /* put some bytes to " */ 140 uint_t (*x_getpostn)(struct XDR *); 141 /* returns bytes off from beginning */ 142 bool_t (*x_setpostn)(struct XDR *, uint_t); 143 /* lets you reposition the stream */ 144 rpc_inline_t *(*x_inline)(struct XDR *, int); 145 /* buf quick ptr to buffered data */ 146 void (*x_destroy)(struct XDR *); 147 /* free privates of this xdr_stream */ 148 bool_t (*x_control)(struct XDR *, int, void *); 149 #if defined(_LP64) || defined(_KERNEL) 150 bool_t (*x_getint32)(struct XDR *, int32_t *); 151 /* get a int from underlying stream */ 152 bool_t (*x_putint32)(struct XDR *, int32_t *); 153 /* put an int to " */ 154 #endif /* _LP64 || _KERNEL */ 155 #else 156 #if !defined(_KERNEL) 157 bool_t (*x_getlong)(); /* get a long from underlying stream */ 158 bool_t (*x_putlong)(); /* put a long to " */ 159 #endif /* KERNEL */ 160 bool_t (*x_getbytes)(); /* get some bytes from " */ 161 bool_t (*x_putbytes)(); /* put some bytes to " */ 162 uint_t (*x_getpostn)(); /* returns bytes off from beginning */ 163 bool_t (*x_setpostn)(); /* lets you reposition the stream */ 164 rpc_inline_t *(*x_inline)(); 165 /* buf quick ptr to buffered data */ 166 void (*x_destroy)(); /* free privates of this xdr_stream */ 167 bool_t (*x_control)(); 168 #if defined(_LP64) || defined(_KERNEL) 169 bool_t (*x_getint32)(); 170 bool_t (*x_putint32)(); 171 #endif /* _LP64 || defined(_KERNEL) */ 172 #endif 173 }; 174 175 /* 176 * Operations defined on a XDR handle 177 * 178 * XDR *xdrs; 179 * long *longp; 180 * caddr_t addr; 181 * uint_t len; 182 * uint_t pos; 183 */ 184 #if !defined(_KERNEL) 185 #define XDR_GETLONG(xdrs, longp) \ 186 (*(xdrs)->x_ops->x_getlong)(xdrs, longp) 187 #define xdr_getlong(xdrs, longp) \ 188 (*(xdrs)->x_ops->x_getlong)(xdrs, longp) 189 190 #define XDR_PUTLONG(xdrs, longp) \ 191 (*(xdrs)->x_ops->x_putlong)(xdrs, longp) 192 #define xdr_putlong(xdrs, longp) \ 193 (*(xdrs)->x_ops->x_putlong)(xdrs, longp) 194 #endif /* KERNEL */ 195 196 197 #if !defined(_LP64) && !defined(_KERNEL) 198 199 /* 200 * For binary compatability on ILP32 we do not change the shape 201 * of the XDR structure and the GET/PUTINT32 functions just use 202 * the get/putlong vectors which operate on identically-sized 203 * units of data. 204 */ 205 206 #define XDR_GETINT32(xdrs, int32p) \ 207 (*(xdrs)->x_ops->x_getlong)(xdrs, (long *)int32p) 208 #define xdr_getint32(xdrs, int32p) \ 209 (*(xdrs)->x_ops->x_getlong)(xdrs, (long *)int32p) 210 211 #define XDR_PUTINT32(xdrs, int32p) \ 212 (*(xdrs)->x_ops->x_putlong)(xdrs, (long *)int32p) 213 #define xdr_putint32(xdrs, int32p) \ 214 (*(xdrs)->x_ops->x_putlong)(xdrs, (long *)int32p) 215 216 #else /* !_LP64 && !_KERNEL */ 217 218 #define XDR_GETINT32(xdrs, int32p) \ 219 (*(xdrs)->x_ops->x_getint32)(xdrs, int32p) 220 #define xdr_getint32(xdrs, int32p) \ 221 (*(xdrs)->x_ops->x_getint32)(xdrs, int32p) 222 223 #define XDR_PUTINT32(xdrs, int32p) \ 224 (*(xdrs)->x_ops->x_putint32)(xdrs, int32p) 225 #define xdr_putint32(xdrs, int32p) \ 226 (*(xdrs)->x_ops->x_putint32)(xdrs, int32p) 227 228 #endif /* !_LP64 && !_KERNEL */ 229 230 #define XDR_GETBYTES(xdrs, addr, len) \ 231 (*(xdrs)->x_ops->x_getbytes)(xdrs, addr, len) 232 #define xdr_getbytes(xdrs, addr, len) \ 233 (*(xdrs)->x_ops->x_getbytes)(xdrs, addr, len) 234 235 #define XDR_PUTBYTES(xdrs, addr, len) \ 236 (*(xdrs)->x_ops->x_putbytes)(xdrs, addr, len) 237 #define xdr_putbytes(xdrs, addr, len) \ 238 (*(xdrs)->x_ops->x_putbytes)(xdrs, addr, len) 239 240 #define XDR_GETPOS(xdrs) \ 241 (*(xdrs)->x_ops->x_getpostn)(xdrs) 242 #define xdr_getpos(xdrs) \ 243 (*(xdrs)->x_ops->x_getpostn)(xdrs) 244 245 #define XDR_SETPOS(xdrs, pos) \ 246 (*(xdrs)->x_ops->x_setpostn)(xdrs, pos) 247 #define xdr_setpos(xdrs, pos) \ 248 (*(xdrs)->x_ops->x_setpostn)(xdrs, pos) 249 250 #define XDR_INLINE(xdrs, len) \ 251 (*(xdrs)->x_ops->x_inline)(xdrs, len) 252 #define xdr_inline(xdrs, len) \ 253 (*(xdrs)->x_ops->x_inline)(xdrs, len) 254 255 #define XDR_DESTROY(xdrs) \ 256 (*(xdrs)->x_ops->x_destroy)(xdrs) 257 #define xdr_destroy(xdrs) \ 258 (*(xdrs)->x_ops->x_destroy)(xdrs) 259 260 #define XDR_CONTROL(xdrs, req, op) \ 261 (*(xdrs)->x_ops->x_control)(xdrs, req, op) 262 #define xdr_control(xdrs, req, op) \ 263 (*(xdrs)->x_ops->x_control)(xdrs, req, op) 264 265 /* 266 * Support struct for discriminated unions. 267 * You create an array of xdrdiscrim structures, terminated with 268 * a entry with a null procedure pointer. The xdr_union routine gets 269 * the discriminant value and then searches the array of structures 270 * for a matching value. If a match is found the associated xdr routine 271 * is called to handle that part of the union. If there is 272 * no match, then a default routine may be called. 273 * If there is no match and no default routine it is an error. 274 */ 275 276 277 /* 278 * A xdrproc_t exists for each data type which is to be encoded or decoded. 279 * 280 * The second argument to the xdrproc_t is a pointer to an opaque pointer. 281 * The opaque pointer generally points to a structure of the data type 282 * to be decoded. If this pointer is 0, then the type routines should 283 * allocate dynamic storage of the appropriate size and return it. 284 * bool_t (*xdrproc_t)(XDR *, void *); 285 */ 286 #ifdef __cplusplus 287 typedef bool_t (*xdrproc_t)(XDR *, void *); 288 #else 289 #ifdef __STDC__ 290 typedef bool_t (*xdrproc_t)(); /* For Backward compatibility */ 291 #else 292 typedef bool_t (*xdrproc_t)(); 293 #endif 294 #endif 295 296 #define NULL_xdrproc_t ((xdrproc_t)0) 297 298 #if defined(_LP64) || defined(_I32LPx) 299 #define xdr_rpcvers(xdrs, versp) xdr_u_int(xdrs, versp) 300 #define xdr_rpcprog(xdrs, progp) xdr_u_int(xdrs, progp) 301 #define xdr_rpcproc(xdrs, procp) xdr_u_int(xdrs, procp) 302 #define xdr_rpcprot(xdrs, protp) xdr_u_int(xdrs, protp) 303 #define xdr_rpcport(xdrs, portp) xdr_u_int(xdrs, portp) 304 #else 305 #define xdr_rpcvers(xdrs, versp) xdr_u_long(xdrs, versp) 306 #define xdr_rpcprog(xdrs, progp) xdr_u_long(xdrs, progp) 307 #define xdr_rpcproc(xdrs, procp) xdr_u_long(xdrs, procp) 308 #define xdr_rpcprot(xdrs, protp) xdr_u_long(xdrs, protp) 309 #define xdr_rpcport(xdrs, portp) xdr_u_long(xdrs, portp) 310 #endif 311 312 struct xdr_discrim { 313 int value; 314 xdrproc_t proc; 315 }; 316 317 /* 318 * In-line routines for fast encode/decode of primitve data types. 319 * Caveat emptor: these use single memory cycles to get the 320 * data from the underlying buffer, and will fail to operate 321 * properly if the data is not aligned. The standard way to use these 322 * is to say: 323 * if ((buf = XDR_INLINE(xdrs, count)) == NULL) 324 * return (FALSE); 325 * <<< macro calls >>> 326 * where ``count'' is the number of bytes of data occupied 327 * by the primitive data types. 328 * 329 * N.B. and frozen for all time: each data type here uses 4 bytes 330 * of external representation. 331 */ 332 333 #define IXDR_GET_INT32(buf) ((int32_t)ntohl((uint32_t)*(buf)++)) 334 #define IXDR_PUT_INT32(buf, v) (*(buf)++ = (int32_t)htonl((uint32_t)v)) 335 #define IXDR_GET_U_INT32(buf) ((uint32_t)IXDR_GET_INT32(buf)) 336 #define IXDR_PUT_U_INT32(buf, v) IXDR_PUT_INT32((buf), ((int32_t)(v))) 337 338 #if !defined(_KERNEL) && !defined(_LP64) 339 340 #define IXDR_GET_LONG(buf) ((long)ntohl((ulong_t)*(buf)++)) 341 #define IXDR_PUT_LONG(buf, v) (*(buf)++ = (long)htonl((ulong_t)v)) 342 #define IXDR_GET_U_LONG(buf) ((ulong_t)IXDR_GET_LONG(buf)) 343 #define IXDR_PUT_U_LONG(buf, v) IXDR_PUT_LONG((buf), ((long)(v))) 344 345 #define IXDR_GET_BOOL(buf) ((bool_t)IXDR_GET_LONG(buf)) 346 #define IXDR_GET_ENUM(buf, t) ((t)IXDR_GET_LONG(buf)) 347 #define IXDR_GET_SHORT(buf) ((short)IXDR_GET_LONG(buf)) 348 #define IXDR_GET_U_SHORT(buf) ((ushort_t)IXDR_GET_LONG(buf)) 349 350 #define IXDR_PUT_BOOL(buf, v) IXDR_PUT_LONG((buf), ((long)(v))) 351 #define IXDR_PUT_ENUM(buf, v) IXDR_PUT_LONG((buf), ((long)(v))) 352 #define IXDR_PUT_SHORT(buf, v) IXDR_PUT_LONG((buf), ((long)(v))) 353 #define IXDR_PUT_U_SHORT(buf, v) IXDR_PUT_LONG((buf), ((long)(v))) 354 355 #else 356 357 #define IXDR_GET_BOOL(buf) ((bool_t)IXDR_GET_INT32(buf)) 358 #define IXDR_GET_ENUM(buf, t) ((t)IXDR_GET_INT32(buf)) 359 #define IXDR_GET_SHORT(buf) ((short)IXDR_GET_INT32(buf)) 360 #define IXDR_GET_U_SHORT(buf) ((ushort_t)IXDR_GET_INT32(buf)) 361 362 #define IXDR_PUT_BOOL(buf, v) IXDR_PUT_INT32((buf), ((int)(v))) 363 #define IXDR_PUT_ENUM(buf, v) IXDR_PUT_INT32((buf), ((int)(v))) 364 #define IXDR_PUT_SHORT(buf, v) IXDR_PUT_INT32((buf), ((int)(v))) 365 #define IXDR_PUT_U_SHORT(buf, v) IXDR_PUT_INT32((buf), ((int)(v))) 366 367 #endif 368 369 #ifndef _LITTLE_ENDIAN 370 #define IXDR_GET_HYPER(buf, v) { \ 371 *((int32_t *)(&v)) = ntohl(*(uint32_t *)buf++); \ 372 *((int32_t *)(((char *)&v) + BYTES_PER_XDR_UNIT)) \ 373 = ntohl(*(uint32_t *)buf++); \ 374 } 375 #define IXDR_PUT_HYPER(buf, v) { \ 376 *(buf)++ = (int32_t)htonl(*(uint32_t *) \ 377 ((char *)&v)); \ 378 *(buf)++ = \ 379 (int32_t)htonl(*(uint32_t *)(((char *)&v) \ 380 + BYTES_PER_XDR_UNIT)); \ 381 } 382 #else 383 384 #define IXDR_GET_HYPER(buf, v) { \ 385 *((int32_t *)(((char *)&v) + \ 386 BYTES_PER_XDR_UNIT)) \ 387 = ntohl(*(uint32_t *)buf++); \ 388 *((int32_t *)(&v)) = \ 389 ntohl(*(uint32_t *)buf++); \ 390 } 391 392 #define IXDR_PUT_HYPER(buf, v) { \ 393 *(buf)++ = \ 394 (int32_t)htonl(*(uint32_t *)(((char *)&v) + \ 395 BYTES_PER_XDR_UNIT)); \ 396 *(buf)++ = \ 397 (int32_t)htonl(*(uint32_t *)((char *)&v)); \ 398 } 399 #endif 400 #define IXDR_GET_U_HYPER(buf, v) IXDR_GET_HYPER(buf, v) 401 #define IXDR_PUT_U_HYPER(buf, v) IXDR_PUT_HYPER(buf, v) 402 403 404 /* 405 * These are the "generic" xdr routines. 406 */ 407 #ifdef __STDC__ 408 extern bool_t xdr_void(void); 409 extern bool_t xdr_int(XDR *, int *); 410 extern bool_t xdr_u_int(XDR *, uint_t *); 411 extern bool_t xdr_long(XDR *, long *); 412 extern bool_t xdr_u_long(XDR *, ulong_t *); 413 extern bool_t xdr_short(XDR *, short *); 414 extern bool_t xdr_u_short(XDR *, ushort_t *); 415 extern bool_t xdr_bool(XDR *, bool_t *); 416 extern bool_t xdr_enum(XDR *, enum_t *); 417 extern bool_t xdr_array(XDR *, caddr_t *, uint_t *, const uint_t, 418 const uint_t, const xdrproc_t); 419 extern bool_t xdr_bytes(XDR *, char **, uint_t *, const uint_t); 420 extern bool_t xdr_opaque(XDR *, caddr_t, const uint_t); 421 extern bool_t xdr_string(XDR *, char **, const uint_t); 422 extern bool_t xdr_union(XDR *, enum_t *, char *, 423 const struct xdr_discrim *, const xdrproc_t); 424 extern bool_t xdr_vector(XDR *, char *, const uint_t, const uint_t, 425 const xdrproc_t); 426 extern unsigned int xdr_sizeof(xdrproc_t, void *); 427 428 extern bool_t xdr_hyper(XDR *, longlong_t *); 429 extern bool_t xdr_longlong_t(XDR *, longlong_t *); 430 extern bool_t xdr_u_hyper(XDR *, u_longlong_t *); 431 extern bool_t xdr_u_longlong_t(XDR *, u_longlong_t *); 432 433 extern bool_t xdr_char(XDR *, char *); 434 extern bool_t xdr_u_char(XDR *, uchar_t *); 435 extern bool_t xdr_wrapstring(XDR *, char **); 436 extern bool_t xdr_reference(XDR *, caddr_t *, uint_t, const xdrproc_t); 437 extern bool_t xdr_pointer(XDR *, char **, uint_t, const xdrproc_t); 438 extern void xdr_free(xdrproc_t, char *); 439 extern bool_t xdr_time_t(XDR *, time_t *); 440 441 extern bool_t xdr_int8_t(XDR *, int8_t *); 442 extern bool_t xdr_uint8_t(XDR *, uint8_t *); 443 extern bool_t xdr_int16_t(XDR *, int16_t *); 444 extern bool_t xdr_uint16_t(XDR *, uint16_t *); 445 extern bool_t xdr_int32_t(XDR *, int32_t *); 446 extern bool_t xdr_uint32_t(XDR *, uint32_t *); 447 #if defined(_INT64_TYPE) 448 extern bool_t xdr_int64_t(XDR *, int64_t *); 449 extern bool_t xdr_uint64_t(XDR *, uint64_t *); 450 #endif 451 452 #ifndef _KERNEL 453 extern bool_t xdr_float(XDR *, float *); 454 extern bool_t xdr_double(XDR *, double *); 455 extern bool_t xdr_quadruple(XDR *, long double *); 456 #endif /* !_KERNEL */ 457 #else 458 extern bool_t xdr_void(); 459 extern bool_t xdr_int(); 460 extern bool_t xdr_u_int(); 461 extern bool_t xdr_long(); 462 extern bool_t xdr_u_long(); 463 extern bool_t xdr_short(); 464 extern bool_t xdr_u_short(); 465 extern bool_t xdr_bool(); 466 extern bool_t xdr_enum(); 467 extern bool_t xdr_array(); 468 extern bool_t xdr_bytes(); 469 extern bool_t xdr_opaque(); 470 extern bool_t xdr_string(); 471 extern bool_t xdr_union(); 472 extern bool_t xdr_vector(); 473 474 extern bool_t xdr_hyper(); 475 extern bool_t xdr_longlong_t(); 476 extern bool_t xdr_u_hyper(); 477 extern bool_t xdr_u_longlong_t(); 478 extern bool_t xdr_char(); 479 extern bool_t xdr_u_char(); 480 extern bool_t xdr_reference(); 481 extern bool_t xdr_pointer(); 482 extern void xdr_free(); 483 extern bool_t xdr_wrapstring(); 484 extern bool_t xdr_time_t(); 485 486 extern bool_t xdr_int8_t(); 487 extern bool_t xdr_uint8_t(); 488 extern bool_t xdr_int16_t(); 489 extern bool_t xdr_uint16_t(); 490 extern bool_t xdr_int32_t(); 491 extern bool_t xdr_uint32_t(); 492 #if defined(_INT64_TYPE) 493 extern bool_t xdr_int64_t(); 494 extern bool_t xdr_uint64_t(); 495 #endif 496 497 #ifndef _KERNEL 498 extern bool_t xdr_float(); 499 extern bool_t xdr_double(); 500 extern bool_t xdr_quadruple(); 501 #endif /* !_KERNEL */ 502 #endif 503 504 /* 505 * Common opaque bytes objects used by many rpc protocols; 506 * declared here due to commonality. 507 */ 508 #define MAX_NETOBJ_SZ 1024 509 struct netobj { 510 uint_t n_len; 511 char *n_bytes; 512 }; 513 typedef struct netobj netobj; 514 515 #ifdef __STDC__ 516 extern bool_t xdr_netobj(XDR *, netobj *); 517 #else 518 extern bool_t xdr_netobj(); 519 #endif 520 521 /* 522 * These are XDR control operators 523 */ 524 525 #define XDR_GET_BYTES_AVAIL 1 526 527 struct xdr_bytesrec { 528 bool_t xc_is_last_record; 529 size_t xc_num_avail; 530 }; 531 532 typedef struct xdr_bytesrec xdr_bytesrec; 533 534 /* 535 * These are the request arguments to XDR_CONTROL. 536 * 537 * XDR_PEEK - returns the contents of the next XDR unit on the XDR stream. 538 * XDR_SKIPBYTES - skips the next N bytes in the XDR stream. 539 * XDR_RDMAGET - for xdr implementation over RDMA, gets private flags from 540 * the XDR stream being moved over RDMA 541 * XDR_RDMANOCHUNK - for xdr implementaion over RDMA, sets private flags in 542 * the XDR stream moving over RDMA. 543 */ 544 #ifdef _KERNEL 545 #define XDR_PEEK 2 546 #define XDR_SKIPBYTES 3 547 #define XDR_RDMA_GET_FLAGS 4 548 #define XDR_RDMA_SET_FLAGS 5 549 #define XDR_RDMA_ADD_CHUNK 6 550 #define XDR_RDMA_GET_CHUNK_LEN 7 551 #define XDR_RDMA_SET_WLIST 8 552 #define XDR_RDMA_GET_WLIST 9 553 #define XDR_RDMA_GET_WCINFO 10 554 #define XDR_RDMA_GET_RLIST 11 555 #endif 556 557 /* 558 * These are the public routines for the various implementations of 559 * xdr streams. 560 */ 561 #if !defined(_KERNEL) && !defined(_FAKE_KERNEL) 562 #ifdef __STDC__ 563 extern void xdrmem_create(XDR *, const caddr_t, const uint_t, const enum 564 xdr_op); 565 /* XDR using memory buffers */ 566 extern void xdrstdio_create(XDR *, FILE *, const enum xdr_op); 567 /* XDR using stdio library */ 568 extern void xdrrec_create(XDR *, const uint_t, const uint_t, const caddr_t, 569 int (*) (void *, caddr_t, int), int (*) (void *, caddr_t, int)); 570 /* XDR pseudo records for tcp */ 571 extern bool_t xdrrec_endofrecord(XDR *, bool_t); 572 /* make end of xdr record */ 573 extern bool_t xdrrec_skiprecord(XDR *); 574 /* move to beginning of next record */ 575 extern bool_t xdrrec_eof(XDR *); 576 extern uint_t xdrrec_readbytes(XDR *, caddr_t, uint_t); 577 /* true if no more input */ 578 #else 579 extern void xdrmem_create(); 580 extern void xdrstdio_create(); 581 extern void xdrrec_create(); 582 extern bool_t xdrrec_endofrecord(); 583 extern bool_t xdrrec_skiprecord(); 584 extern bool_t xdrrec_eof(); 585 extern uint_t xdrrec_readbytes(); 586 #endif 587 #else 588 589 #define DLEN(mp) (mp->b_cont ? msgdsize(mp) : (mp->b_wptr - mp->b_rptr)) 590 591 extern void xdrmem_create(XDR *, caddr_t, uint_t, enum xdr_op); 592 extern void xdrmblk_init(XDR *, mblk_t *, enum xdr_op, int); 593 extern bool_t xdrmblk_getmblk(XDR *, mblk_t **, uint_t *); 594 extern bool_t xdrmblk_putmblk(XDR *, mblk_t *, uint_t); 595 extern struct xdr_ops xdrmblk_ops; 596 extern struct xdr_ops xdrrdmablk_ops; 597 extern struct xdr_ops xdrrdma_ops; 598 599 struct rpc_msg; 600 extern bool_t xdr_callmsg(XDR *, struct rpc_msg *); 601 extern bool_t xdr_replymsg_body(XDR *, struct rpc_msg *); 602 extern bool_t xdr_replymsg_hdr(XDR *, struct rpc_msg *); 603 604 #endif /* !_KERNEL */ 605 606 #ifdef __cplusplus 607 } 608 #endif 609 610 #endif /* !_RPC_XDR_H */ 611