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
  22 /*
  23  * Copyright 2016 Nexenta Systems, Inc.  All rights reserved.
  24  */
  25
  26 /*
  27  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  28  * Use is subject to license terms.
  29  */
  30 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
  31 /* All Rights Reserved */
  32 /*
  33  * Portions of this source code were derived from Berkeley
  34  * 4.3 BSD under license from the Regents of the University of
  35  * California.
  36  */
  37
  38 /*
  39  * xdr.h, External Data Representation Serialization Routines.
  40  *
  41  */
  42
  43 #ifndef _RPC_XDR_H
  44 #define _RPC_XDR_H
  45
  46 #include <sys/byteorder.h>      /* For all ntoh* and hton*() kind of macros */
  47 #include <rpc/types.h>  /* For all ntoh* and hton*() kind of macros */
  48 #if !defined(_KERNEL)
  49 #include <stdio.h> /* defines FILE *, used in ANSI C function prototypes */
  50 #else   /* _KERNEL */
  51 #include <sys/stream.h>
  52 #endif  /* _KERNEL */
  53
  54 #ifdef __cplusplus
  55 extern "C" {
  56 #endif
  57
  58 /*
  59  * XDR provides a conventional way for converting between C data
  60  * types and an external bit-string representation.  Library supplied
  61  * routines provide for the conversion on built-in C data types.  These
  62  * routines and utility routines defined here are used to help implement
  63  * a type encode/decode routine for each user-defined type.
  64  *
  65  * Each data type provides a single procedure which takes two arguments:
  66  *
  67  *      bool_t
  68  *      xdrproc(xdrs, argresp)
  69  *              XDR *xdrs;
  70  *              <type> *argresp;
  71  *
  72  * xdrs is an instance of a XDR handle, to which or from which the data
  73  * type is to be converted.  argresp is a pointer to the structure to be
  74  * converted.  The XDR handle contains an operation field which indicates
  75  * which of the operations (ENCODE, DECODE * or FREE) is to be performed.
  76  *
  77  * XDR_DECODE may allocate space if the pointer argresp is null.  This
  78  * data can be freed with the XDR_FREE operation.
  79  *
  80  * We write only one procedure per data type to make it easy
  81  * to keep the encode and decode procedures for a data type consistent.
  82  * In many cases the same code performs all operations on a user defined type,
  83  * because all the hard work is done in the component type routines.
  84  * decode as a series of calls on the nested data types.
  85  */
  86
  87 /*
  88  * Xdr operations.  XDR_ENCODE causes the type to be encoded into the
  89  * stream.  XDR_DECODE causes the type to be extracted from the stream.
  90  * XDR_FREE can be used to release the space allocated by an XDR_DECODE
  91  * request.
  92  */
  93 enum xdr_op {
  94         XDR_ENCODE = 0,
  95         XDR_DECODE = 1,
  96         XDR_FREE = 2
  97 };
  98
  99 /*
 100  * This is the number of bytes per unit of external data.
 101  */
 102 #define BYTES_PER_XDR_UNIT      (4)
 103 #define RNDUP(x)  ((((x) + BYTES_PER_XDR_UNIT - 1) / BYTES_PER_XDR_UNIT) \
 104                     * BYTES_PER_XDR_UNIT)
 105
 106 /*
 107  * The XDR handle.
 108  * Contains operation which is being applied to the stream,
 109  * an operations vector for the paticular implementation (e.g. see xdr_mem.c),
 110  * and two private fields for the use of the particular impelementation.
 111  *
 112  * PSARC 2003/523 Contract Private Interface
 113  * XDR
 114  * Changes must be reviewed by Solaris File Sharing
 115  * Changes must be communicated to contract-2003-523@sun.com
 116  */
 117 typedef struct XDR {
 118         enum xdr_op     x_op;   /* operation; fast additional param */
 119         struct xdr_ops *x_ops;
 120         caddr_t         x_public; /* users' data */
 121         caddr_t         x_private; /* pointer to private data */
 122         caddr_t         x_base; /* private used for position info */
 123         int             x_handy; /* extra private word */
 124 } XDR;
 125
 126 /*
 127  * PSARC 2003/523 Contract Private Interface
 128  * xdr_ops
 129  * Changes must be reviewed by Solaris File Sharing
 130  * Changes must be communicated to contract-2003-523@sun.com
 131  */
 132 struct xdr_ops {
 133 #ifdef __STDC__
 134 #if !defined(_KERNEL)
 135                 bool_t  (*x_getlong)(struct XDR *, long *);
 136                 /* get a long from underlying stream */
 137                 bool_t  (*x_putlong)(struct XDR *, long *);
 138                 /* put a long to " */
 139 #endif /* KERNEL */
 140                 bool_t  (*x_getbytes)(struct XDR *, caddr_t, int);
 141                 /* get some bytes from " */
 142                 bool_t  (*x_putbytes)(struct XDR *, caddr_t, int);
 143                 /* put some bytes to " */
 144                 uint_t  (*x_getpostn)(struct XDR *);
 145                 /* returns bytes off from beginning */
 146                 bool_t  (*x_setpostn)(struct XDR *, uint_t);
 147                 /* lets you reposition the stream */
 148                 rpc_inline_t *(*x_inline)(struct XDR *, int);
 149                 /* buf quick ptr to buffered data */
 150                 void    (*x_destroy)(struct XDR *);
 151                 /* free privates of this xdr_stream */
 152                 bool_t  (*x_control)(struct XDR *, int, void *);
 153 #if defined(_LP64) || defined(_KERNEL)
 154                 bool_t  (*x_getint32)(struct XDR *, int32_t *);
 155                 /* get a int from underlying stream */
 156                 bool_t  (*x_putint32)(struct XDR *, int32_t *);
 157                 /* put an int to " */
 158 #endif /* _LP64 || _KERNEL */
 159 #else
 160 #if !defined(_KERNEL)
 161                 bool_t  (*x_getlong)(); /* get a long from underlying stream */
 162                 bool_t  (*x_putlong)(); /* put a long to " */
 163 #endif /* KERNEL */
 164                 bool_t  (*x_getbytes)(); /* get some bytes from " */
 165                 bool_t  (*x_putbytes)(); /* put some bytes to " */
 166                 uint_t  (*x_getpostn)(); /* returns bytes off from beginning */
 167                 bool_t  (*x_setpostn)(); /* lets you reposition the stream */
 168                 rpc_inline_t *(*x_inline)();
 169                                 /* buf quick ptr to buffered data */
 170                 void    (*x_destroy)(); /* free privates of this xdr_stream */
 171                 bool_t  (*x_control)();
 172 #if defined(_LP64) || defined(_KERNEL)
 173                 bool_t  (*x_getint32)();
 174                 bool_t  (*x_putint32)();
 175 #endif /* _LP64 || defined(_KERNEL) */
 176 #endif
 177 };
 178
 179 /*
 180  * Operations defined on a XDR handle
 181  *
 182  * XDR          *xdrs;
 183  * long         *longp;
 184  * caddr_t       addr;
 185  * uint_t        len;
 186  * uint_t        pos;
 187  */
 188 #if !defined(_KERNEL)
 189 #define XDR_GETLONG(xdrs, longp)                        \
 190         (*(xdrs)->x_ops->x_getlong)(xdrs, longp)
 191 #define xdr_getlong(xdrs, longp)                        \
 192         (*(xdrs)->x_ops->x_getlong)(xdrs, longp)
 193
 194 #define XDR_PUTLONG(xdrs, longp)                        \
 195         (*(xdrs)->x_ops->x_putlong)(xdrs, longp)
 196 #define xdr_putlong(xdrs, longp)                        \
 197         (*(xdrs)->x_ops->x_putlong)(xdrs, longp)
 198 #endif /* KERNEL */
 199
 200
 201 #if !defined(_LP64) && !defined(_KERNEL)
 202
 203 /*
 204  * For binary compatability on ILP32 we do not change the shape
 205  * of the XDR structure and the GET/PUTINT32 functions just use
 206  * the get/putlong vectors which operate on identically-sized
 207  * units of data.
 208  */
 209
 210 #define XDR_GETINT32(xdrs, int32p)                      \
 211         (*(xdrs)->x_ops->x_getlong)(xdrs, (long *)int32p)
 212 #define xdr_getint32(xdrs, int32p)                      \
 213         (*(xdrs)->x_ops->x_getlong)(xdrs, (long *)int32p)
 214
 215 #define XDR_PUTINT32(xdrs, int32p)                      \
 216         (*(xdrs)->x_ops->x_putlong)(xdrs, (long *)int32p)
 217 #define xdr_putint32(xdrs, int32p)                      \
 218         (*(xdrs)->x_ops->x_putlong)(xdrs, (long *)int32p)
 219
 220 #else /* !_LP64 && !_KERNEL */
 221
 222 #define XDR_GETINT32(xdrs, int32p)                      \
 223         (*(xdrs)->x_ops->x_getint32)(xdrs, int32p)
 224 #define xdr_getint32(xdrs, int32p)                      \
 225         (*(xdrs)->x_ops->x_getint32)(xdrs, int32p)
 226
 227 #define XDR_PUTINT32(xdrs, int32p)                      \
 228         (*(xdrs)->x_ops->x_putint32)(xdrs, int32p)
 229 #define xdr_putint32(xdrs, int32p)                      \
 230         (*(xdrs)->x_ops->x_putint32)(xdrs, int32p)
 231
 232 #endif /* !_LP64 && !_KERNEL */
 233
 234 #define XDR_GETBYTES(xdrs, addr, len)                   \
 235         (*(xdrs)->x_ops->x_getbytes)(xdrs, addr, len)
 236 #define xdr_getbytes(xdrs, addr, len)                   \
 237         (*(xdrs)->x_ops->x_getbytes)(xdrs, addr, len)
 238
 239 #define XDR_PUTBYTES(xdrs, addr, len)                   \
 240         (*(xdrs)->x_ops->x_putbytes)(xdrs, addr, len)
 241 #define xdr_putbytes(xdrs, addr, len)                   \
 242         (*(xdrs)->x_ops->x_putbytes)(xdrs, addr, len)
 243
 244 #define XDR_GETPOS(xdrs)                                \
 245         (*(xdrs)->x_ops->x_getpostn)(xdrs)
 246 #define xdr_getpos(xdrs)                                \
 247         (*(xdrs)->x_ops->x_getpostn)(xdrs)
 248
 249 #define XDR_SETPOS(xdrs, pos)                           \
 250         (*(xdrs)->x_ops->x_setpostn)(xdrs, pos)
 251 #define xdr_setpos(xdrs, pos)                           \
 252         (*(xdrs)->x_ops->x_setpostn)(xdrs, pos)
 253
 254 #define XDR_INLINE(xdrs, len)                           \
 255         (*(xdrs)->x_ops->x_inline)(xdrs, len)
 256 #define xdr_inline(xdrs, len)                           \
 257         (*(xdrs)->x_ops->x_inline)(xdrs, len)
 258
 259 #define XDR_DESTROY(xdrs)                               \
 260         (*(xdrs)->x_ops->x_destroy)(xdrs)
 261 #define xdr_destroy(xdrs)                               \
 262         (*(xdrs)->x_ops->x_destroy)(xdrs)
 263
 264 #define XDR_CONTROL(xdrs, req, op)                      \
 265         (*(xdrs)->x_ops->x_control)(xdrs, req, op)
 266 #define xdr_control(xdrs, req, op)                      \
 267         (*(xdrs)->x_ops->x_control)(xdrs, req, op)
 268
 269 /*
 270  * Support struct for discriminated unions.
 271  * You create an array of xdrdiscrim structures, terminated with
 272  * a entry with a null procedure pointer.  The xdr_union routine gets
 273  * the discriminant value and then searches the array of structures
 274  * for a matching value.  If a match is found the associated xdr routine
 275  * is called to handle that part of the union.  If there is
 276  * no match, then a default routine may be called.
 277  * If there is no match and no default routine it is an error.
 278  */
 279
 280
 281 /*
 282  * A xdrproc_t exists for each data type which is to be encoded or decoded.
 283  *
 284  * The second argument to the xdrproc_t is a pointer to an opaque pointer.
 285  * The opaque pointer generally points to a structure of the data type
 286  * to be decoded.  If this pointer is 0, then the type routines should
 287  * allocate dynamic storage of the appropriate size and return it.
 288  * bool_t       (*xdrproc_t)(XDR *, void *);
 289  */
 290 #ifdef __cplusplus
 291 typedef bool_t (*xdrproc_t)(XDR *, void *);
 292 #else
 293 #ifdef __STDC__
 294 typedef bool_t (*xdrproc_t)(); /* For Backward compatibility */
 295 #else
 296 typedef bool_t (*xdrproc_t)();
 297 #endif
 298 #endif
 299
 300 #define NULL_xdrproc_t ((xdrproc_t)0)
 301
 302 #if defined(_LP64) || defined(_I32LPx)
 303 #define xdr_rpcvers(xdrs, versp)        xdr_u_int(xdrs, versp)
 304 #define xdr_rpcprog(xdrs, progp)        xdr_u_int(xdrs, progp)
 305 #define xdr_rpcproc(xdrs, procp)        xdr_u_int(xdrs, procp)
 306 #define xdr_rpcprot(xdrs, protp)        xdr_u_int(xdrs, protp)
 307 #define xdr_rpcport(xdrs, portp)        xdr_u_int(xdrs, portp)
 308 #else
 309 #define xdr_rpcvers(xdrs, versp)        xdr_u_long(xdrs, versp)
 310 #define xdr_rpcprog(xdrs, progp)        xdr_u_long(xdrs, progp)
 311 #define xdr_rpcproc(xdrs, procp)        xdr_u_long(xdrs, procp)
 312 #define xdr_rpcprot(xdrs, protp)        xdr_u_long(xdrs, protp)
 313 #define xdr_rpcport(xdrs, portp)        xdr_u_long(xdrs, portp)
 314 #endif
 315
 316 struct xdr_discrim {
 317         int     value;
 318         xdrproc_t proc;
 319 };
 320
 321 /*
 322  * In-line routines for fast encode/decode of primitve data types.
 323  * Caveat emptor: these use single memory cycles to get the
 324  * data from the underlying buffer, and will fail to operate
 325  * properly if the data is not aligned.  The standard way to use these
 326  * is to say:
 327  *      if ((buf = XDR_INLINE(xdrs, count)) == NULL)
 328  *              return (FALSE);
 329  *      <<< macro calls >>>
 330  * where ``count'' is the number of bytes of data occupied
 331  * by the primitive data types.
 332  *
 333  * N.B. and frozen for all time: each data type here uses 4 bytes
 334  * of external representation.
 335  */
 336
 337 #define IXDR_GET_INT32(buf)             ((int32_t)ntohl((uint32_t)*(buf)++))
 338 #define IXDR_PUT_INT32(buf, v)          (*(buf)++ = (int32_t)htonl((uint32_t)v))
 339 #define IXDR_GET_U_INT32(buf)           ((uint32_t)IXDR_GET_INT32(buf))
 340 #define IXDR_PUT_U_INT32(buf, v)        IXDR_PUT_INT32((buf), ((int32_t)(v)))
 341
 342 #if !defined(_KERNEL) && !defined(_LP64)
 343
 344 #define IXDR_GET_LONG(buf)              ((long)ntohl((ulong_t)*(buf)++))
 345 #define IXDR_PUT_LONG(buf, v)           (*(buf)++ = (long)htonl((ulong_t)v))
 346 #define IXDR_GET_U_LONG(buf)            ((ulong_t)IXDR_GET_LONG(buf))
 347 #define IXDR_PUT_U_LONG(buf, v)         IXDR_PUT_LONG((buf), ((long)(v)))
 348
 349 #define IXDR_GET_BOOL(buf)              ((bool_t)IXDR_GET_LONG(buf))
 350 #define IXDR_GET_ENUM(buf, t)           ((t)IXDR_GET_LONG(buf))
 351 #define IXDR_GET_SHORT(buf)             ((short)IXDR_GET_LONG(buf))
 352 #define IXDR_GET_U_SHORT(buf)           ((ushort_t)IXDR_GET_LONG(buf))
 353
 354 #define IXDR_PUT_BOOL(buf, v)           IXDR_PUT_LONG((buf), ((long)(v)))
 355 #define IXDR_PUT_ENUM(buf, v)           IXDR_PUT_LONG((buf), ((long)(v)))
 356 #define IXDR_PUT_SHORT(buf, v)          IXDR_PUT_LONG((buf), ((long)(v)))
 357 #define IXDR_PUT_U_SHORT(buf, v)        IXDR_PUT_LONG((buf), ((long)(v)))
 358
 359 #else
 360
 361 #define IXDR_GET_BOOL(buf)              ((bool_t)IXDR_GET_INT32(buf))
 362 #define IXDR_GET_ENUM(buf, t)           ((t)IXDR_GET_INT32(buf))
 363 #define IXDR_GET_SHORT(buf)             ((short)IXDR_GET_INT32(buf))
 364 #define IXDR_GET_U_SHORT(buf)           ((ushort_t)IXDR_GET_INT32(buf))
 365
 366 #define IXDR_PUT_BOOL(buf, v)           IXDR_PUT_INT32((buf), ((int)(v)))
 367 #define IXDR_PUT_ENUM(buf, v)           IXDR_PUT_INT32((buf), ((int)(v)))
 368 #define IXDR_PUT_SHORT(buf, v)          IXDR_PUT_INT32((buf), ((int)(v)))
 369 #define IXDR_PUT_U_SHORT(buf, v)        IXDR_PUT_INT32((buf), ((int)(v)))
 370
 371 #endif
 372
 373 #ifndef _LITTLE_ENDIAN
 374 #define IXDR_GET_HYPER(buf, v)  { \
 375                         *((int32_t *)(&v)) = ntohl(*(uint32_t *)buf++); \
 376                         *((int32_t *)(((char *)&v) + BYTES_PER_XDR_UNIT)) \
 377                         = ntohl(*(uint32_t *)buf++); \
 378                         }
 379 #define IXDR_PUT_HYPER(buf, v)  { \
 380                         *(buf)++ = (int32_t)htonl(*(uint32_t *) \
 381                                 ((char *)&v)); \
 382                         *(buf)++ = \
 383                                 (int32_t)htonl(*(uint32_t *)(((char *)&v) \
 384                                 + BYTES_PER_XDR_UNIT)); \
 385                         }
 386 #else
 387
 388 #define IXDR_GET_HYPER(buf, v)  { \
 389                         *((int32_t *)(((char *)&v) + \
 390                                 BYTES_PER_XDR_UNIT)) \
 391                                 = ntohl(*(uint32_t *)buf++); \
 392                         *((int32_t *)(&v)) = \
 393                                 ntohl(*(uint32_t *)buf++); \
 394                         }
 395
 396 #define IXDR_PUT_HYPER(buf, v)  { \
 397                         *(buf)++ = \
 398                                 (int32_t)htonl(*(uint32_t *)(((char *)&v) + \
 399                                 BYTES_PER_XDR_UNIT)); \
 400                         *(buf)++ = \
 401                                 (int32_t)htonl(*(uint32_t *)((char *)&v)); \
 402                         }
 403 #endif
 404 #define IXDR_GET_U_HYPER(buf, v)        IXDR_GET_HYPER(buf, v)
 405 #define IXDR_PUT_U_HYPER(buf, v)        IXDR_PUT_HYPER(buf, v)
 406
 407
 408 /*
 409  * These are the "generic" xdr routines.
 410  */
 411 #ifdef __STDC__
 412 extern bool_t   xdr_void(void);
 413 extern bool_t   xdr_int(XDR *, int *);
 414 extern bool_t   xdr_u_int(XDR *, uint_t *);
 415 extern bool_t   xdr_long(XDR *, long *);
 416 extern bool_t   xdr_u_long(XDR *, ulong_t *);
 417 extern bool_t   xdr_short(XDR *, short *);
 418 extern bool_t   xdr_u_short(XDR *, ushort_t *);
 419 extern bool_t   xdr_bool(XDR *, bool_t *);
 420 extern bool_t   xdr_enum(XDR *, enum_t *);
 421 extern bool_t   xdr_array(XDR *, caddr_t *, uint_t *, const uint_t,
 422                     const uint_t, const xdrproc_t);
 423 extern bool_t   xdr_bytes(XDR *, char **, uint_t *, const uint_t);
 424 extern bool_t   xdr_opaque(XDR *, caddr_t, const uint_t);
 425 extern bool_t   xdr_string(XDR *, char **, const uint_t);
 426 extern bool_t   xdr_union(XDR *, enum_t *, char *,
 427                     const struct xdr_discrim *, const xdrproc_t);
 428 extern bool_t   xdr_vector(XDR *, char *, const uint_t, const uint_t,
 429     const xdrproc_t);
 430 extern unsigned int  xdr_sizeof(xdrproc_t, void *);
 431
 432 extern bool_t   xdr_hyper(XDR *, longlong_t *);
 433 extern bool_t   xdr_longlong_t(XDR *, longlong_t *);
 434 extern bool_t   xdr_u_hyper(XDR *, u_longlong_t *);
 435 extern bool_t   xdr_u_longlong_t(XDR *, u_longlong_t *);
 436
 437 extern bool_t   xdr_char(XDR *, char *);
 438 extern bool_t   xdr_u_char(XDR *, uchar_t *);
 439 extern bool_t   xdr_wrapstring(XDR *, char **);
 440 extern bool_t   xdr_reference(XDR *, caddr_t *, uint_t, const xdrproc_t);
 441 extern bool_t   xdr_pointer(XDR *, char **, uint_t, const xdrproc_t);
 442 extern void     xdr_free(xdrproc_t, char *);
 443 extern bool_t   xdr_time_t(XDR *, time_t *);
 444
 445 extern bool_t   xdr_int8_t(XDR *, int8_t *);
 446 extern bool_t   xdr_uint8_t(XDR *, uint8_t *);
 447 extern bool_t   xdr_int16_t(XDR *, int16_t *);
 448 extern bool_t   xdr_uint16_t(XDR *, uint16_t *);
 449 extern bool_t   xdr_int32_t(XDR *, int32_t *);
 450 extern bool_t   xdr_uint32_t(XDR *, uint32_t *);
 451 #if defined(_INT64_TYPE)
 452 extern bool_t   xdr_int64_t(XDR *, int64_t *);
 453 extern bool_t   xdr_uint64_t(XDR *, uint64_t *);
 454 #endif
 455
 456 #ifndef _KERNEL
 457 extern bool_t   xdr_float(XDR *, float *);
 458 extern bool_t   xdr_double(XDR *, double *);
 459 extern bool_t   xdr_quadruple(XDR *, long double *);
 460 #endif /* !_KERNEL */
 461 #else
 462 extern bool_t   xdr_void();
 463 extern bool_t   xdr_int();
 464 extern bool_t   xdr_u_int();
 465 extern bool_t   xdr_long();
 466 extern bool_t   xdr_u_long();
 467 extern bool_t   xdr_short();
 468 extern bool_t   xdr_u_short();
 469 extern bool_t   xdr_bool();
 470 extern bool_t   xdr_enum();
 471 extern bool_t   xdr_array();
 472 extern bool_t   xdr_bytes();
 473 extern bool_t   xdr_opaque();
 474 extern bool_t   xdr_string();
 475 extern bool_t   xdr_union();
 476 extern bool_t   xdr_vector();
 477
 478 extern bool_t   xdr_hyper();
 479 extern bool_t   xdr_longlong_t();
 480 extern bool_t   xdr_u_hyper();
 481 extern bool_t   xdr_u_longlong_t();
 482 extern bool_t   xdr_char();
 483 extern bool_t   xdr_u_char();
 484 extern bool_t   xdr_reference();
 485 extern bool_t   xdr_pointer();
 486 extern void     xdr_free();
 487 extern bool_t   xdr_wrapstring();
 488 extern bool_t   xdr_time_t();
 489
 490 extern bool_t   xdr_int8_t();
 491 extern bool_t   xdr_uint8_t();
 492 extern bool_t   xdr_int16_t();
 493 extern bool_t   xdr_uint16_t();
 494 extern bool_t   xdr_int32_t();
 495 extern bool_t   xdr_uint32_t();
 496 #if defined(_INT64_TYPE)
 497 extern bool_t   xdr_int64_t();
 498 extern bool_t   xdr_uint64_t();
 499 #endif
 500
 501 #ifndef _KERNEL
 502 extern bool_t   xdr_float();
 503 extern bool_t   xdr_double();
 504 extern bool_t   xdr_quadruple();
 505 #endif /* !_KERNEL */
 506 #endif
 507
 508 /*
 509  * Common opaque bytes objects used by many rpc protocols;
 510  * declared here due to commonality.
 511  */
 512 #define MAX_NETOBJ_SZ 1024
 513 struct netobj {
 514         uint_t  n_len;
 515         char    *n_bytes;
 516 };
 517 typedef struct netobj netobj;
 518
 519 #ifdef __STDC__
 520 extern bool_t   xdr_netobj(XDR *, netobj *);
 521 #else
 522 extern bool_t   xdr_netobj();
 523 #endif
 524
 525 /*
 526  * These are XDR control operators
 527  */
 528
 529 #define XDR_GET_BYTES_AVAIL 1
 530
 531 struct xdr_bytesrec {
 532         bool_t xc_is_last_record;
 533         size_t xc_num_avail;
 534 };
 535
 536 typedef struct xdr_bytesrec xdr_bytesrec;
 537
 538 /*
 539  * These are the request arguments to XDR_CONTROL.
 540  *
 541  * XDR_PEEK - returns the contents of the next XDR unit on the XDR stream.
 542  * XDR_SKIPBYTES - skips the next N bytes in the XDR stream.
 543  * XDR_RDMAGET - for xdr implementation over RDMA, gets private flags from
 544  *               the XDR stream being moved over RDMA
 545  * XDR_RDMANOCHUNK - for xdr implementaion over RDMA, sets private flags in
 546  *                   the XDR stream moving over RDMA.
 547  */
 548 #ifdef _KERNEL
 549 #define XDR_PEEK                2
 550 #define XDR_SKIPBYTES           3
 551 #define XDR_RDMA_GET_FLAGS      4
 552 #define XDR_RDMA_SET_FLAGS      5
 553 #define XDR_RDMA_ADD_CHUNK      6
 554 #define XDR_RDMA_GET_CHUNK_LEN  7
 555 #define XDR_RDMA_SET_WLIST      8
 556 #define XDR_RDMA_GET_WLIST      9
 557 #define XDR_RDMA_GET_WCINFO     10
 558 #define XDR_RDMA_GET_RLIST      11
 559 #endif
 560
 561 /*
 562  * These are the public routines for the various implementations of
 563  * xdr streams.
 564  */
 565 #if !defined(_KERNEL)
 566 #ifdef __STDC__
 567 extern void   xdrmem_create(XDR *, const caddr_t, const uint_t, const enum
 568 xdr_op);
 569         /* XDR using memory buffers */
 570 extern void   xdrstdio_create(XDR *, FILE *, const enum xdr_op);
 571 /* XDR using stdio library */
 572 extern void   xdrrec_create(XDR *, const uint_t, const uint_t, const caddr_t,
 573 int (*) (void *, caddr_t, int), int (*) (void *, caddr_t, int));
 574 /* XDR pseudo records for tcp */
 575 extern bool_t xdrrec_endofrecord(XDR *, bool_t);
 576 /* make end of xdr record */
 577 extern bool_t xdrrec_skiprecord(XDR *);
 578 /* move to beginning of next record */
 579 extern bool_t xdrrec_eof(XDR *);
 580 extern uint_t xdrrec_readbytes(XDR *, caddr_t, uint_t);
 581 /* true if no more input */
 582 #else
 583 extern void   xdrmem_create();
 584 extern void   xdrstdio_create();
 585 extern void   xdrrec_create();
 586 extern bool_t xdrrec_endofrecord();
 587 extern bool_t xdrrec_skiprecord();
 588 extern bool_t xdrrec_eof();
 589 extern uint_t xdrrec_readbytes();
 590 #endif
 591 #else
 592
 593 #define DLEN(mp) (mp->b_cont ? msgdsize(mp) : (mp->b_wptr - mp->b_rptr))
 594
 595 extern void     xdrmem_create(XDR *, caddr_t, uint_t, enum xdr_op);
 596 extern void     xdrmblk_init(XDR *, mblk_t *, enum xdr_op, int);
 597 extern bool_t   xdrmblk_getmblk(XDR *, mblk_t **, uint_t *);
 598 extern bool_t   xdrmblk_putmblk(XDR *, mblk_t *, uint_t);
 599 extern bool_t   xdrmblk_putmblk_raw(XDR *, mblk_t *);
 600 extern struct xdr_ops xdrmblk_ops;
 601 extern struct xdr_ops xdrrdmablk_ops;
 602 extern struct xdr_ops xdrrdma_ops;
 603
 604 struct rpc_msg;
 605 extern bool_t   xdr_callmsg(XDR *, struct rpc_msg *);
 606 extern bool_t   xdr_replymsg_body(XDR *, struct rpc_msg *);
 607 extern bool_t   xdr_replymsg_hdr(XDR *, struct rpc_msg *);
 608
 609 #endif /* !_KERNEL */
 610
 611 #ifdef __cplusplus
 612 }
 613 #endif
 614
 615 #endif  /* !_RPC_XDR_H */