usr/src/uts/common/rpc/xdr.h

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