bsd/sys/uio_internal.h

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  24 /*
  25  * Copyright (c) 1982, 1986, 1993, 1994
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * Redistribution and use in source and binary forms, with or without
  29  * modification, are permitted provided that the following conditions
  30  * are met:
  31  * 1. Redistributions of source code must retain the above copyright
  32  *    notice, this list of conditions and the following disclaimer.
  33  * 2. Redistributions in binary form must reproduce the above copyright
  34  *    notice, this list of conditions and the following disclaimer in the
  35  *    documentation and/or other materials provided with the distribution.
  36  * 3. All advertising materials mentioning features or use of this software
  37  *    must display the following acknowledgement:
  38  *      This product includes software developed by the University of
  39  *      California, Berkeley and its contributors.
  40  * 4. Neither the name of the University nor the names of its contributors
  41  *    may be used to endorse or promote products derived from this software
  42  *    without specific prior written permission.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54  * SUCH DAMAGE.
  55  *
  56  *      @(#)uio.h       8.5 (Berkeley) 2/22/94
  57  */
  58
  59 #ifndef _SYS_UIO_INTERNAL_H_
  60 #define _SYS_UIO_INTERNAL_H_
  61
  62 #include <sys/appleapiopts.h>
  63
  64 #ifdef KERNEL_PRIVATE
  65 #include <sys/uio.h>
  66 #include <sys/malloc.h>
  67
  68 /*
  69  * user / kernel address space type flags.
  70  * WARNING - make sure to check when adding flags!  Be sure new flags
  71  * don't overlap the definitions in uio.h
  72  */
  73 //      UIO_USERSPACE                           0       defined in uio.h
  74 #define UIO_USERISPACE                  1
  75 //      UIO_SYSSPACE                            2       defined in uio.h
  76 #define UIO_PHYS_USERSPACE              3
  77 #define UIO_PHYS_SYSSPACE               4
  78 //      UIO_USERSPACE32                         5       defined in uio.h
  79 #define UIO_USERISPACE32                6
  80 #define UIO_PHYS_USERSPACE32    7
  81 //      UIO_USERSPACE64                         8       defined in uio.h
  82 #define UIO_USERISPACE64                9
  83 #define UIO_PHYS_USERSPACE64    10
  84 //      UIO_SYSSPACE32                          11      defined in uio.h
  85 #define UIO_PHYS_SYSSPACE32             12
  86 #define UIO_SYSSPACE64                  13
  87 #define UIO_PHYS_SYSSPACE64             14
  88
  89 __BEGIN_DECLS
  90 struct user_iovec;
  91
  92 // uio_iovsaddr was __private_extern__ temporary chnage for 3777436
  93 struct user_iovec * uio_iovsaddr( uio_t a_uio );
  94 __private_extern__ void uio_calculateresid( uio_t a_uio );
  95 __private_extern__ void uio_setcurriovlen( uio_t a_uio, user_size_t a_value );
  96 // uio_spacetype was __private_extern__ temporary chnage for 3777436
  97 int uio_spacetype( uio_t a_uio );
  98 __private_extern__ uio_t
  99         uio_createwithbuffer( int a_iovcount, off_t a_offset, int a_spacetype,
 100                                                         int a_iodirection, void *a_buf_p, int a_buffer_size );
 101
 102 /* use kern_iovec for system space requests */
 103 struct kern_iovec {
 104         u_int32_t       iov_base;       /* Base address. */
 105         u_int32_t       iov_len;        /* Length. */
 106 };
 107
 108 /* use user_iovec for user space requests */
 109 struct user_iovec {
 110         user_addr_t     iov_base;       /* Base address. */
 111         user_size_t     iov_len;        /* Length. */
 112 };
 113
 114 #if 1 // LP64todo - remove this after kext adopt new KPI
 115 #define uio_iov uio_iovs.iovp
 116 #define iovec_32 kern_iovec
 117 #define iovec_64 user_iovec
 118 #define iov32p kiovp
 119 #define iov64p uiovp
 120 #endif
 121
 122 union iovecs {
 123         struct iovec            *iovp;
 124         struct kern_iovec       *kiovp;
 125         struct user_iovec       *uiovp;
 126 };
 127
 128 /* WARNING - use accessor calls for uio_iov and uio_resid since these */
 129 /* fields vary depending on the originating address space. */
 130 struct uio {
 131         union iovecs    uio_iovs;               /* current iovec */
 132         int                             uio_iovcnt;             /* active iovecs */
 133         off_t                   uio_offset;
 134         int                             uio_resid;              /* compatibility uio_resid (pre-LP64) */
 135         enum uio_seg    uio_segflg;
 136         enum uio_rw     uio_rw;
 137         proc_t                  uio_procp;              /* obsolete - not used! */
 138         user_ssize_t    uio_resid_64;
 139         int                             uio_size;               /* size for use with kfree */
 140         int                             uio_max_iovs;   /* max number of iovecs this uio_t can hold */
 141         u_int32_t               uio_flags;
 142 };
 143
 144 /* values for uio_flags */
 145 #define UIO_FLAGS_INITED                0x00000001
 146 #define UIO_FLAGS_WE_ALLOCED    0x00000002
 147
 148 __END_DECLS
 149
 150 /*
 151  * UIO_SIZEOF - return the amount of space a uio_t requires to
 152  *      contain the given number of iovecs.  Use this macro to
 153  *  create a stack buffer that can be passed to uio_createwithbuffer.
 154  */
 155 #define UIO_SIZEOF( a_iovcount ) \
 156         ( sizeof(struct uio) + (sizeof(struct user_iovec) * (a_iovcount)) )
 157
 158 #define UIO_IS_64_BIT_SPACE( a_uio_t )  \
 159         ( (a_uio_t)->uio_segflg == UIO_USERSPACE64 || (a_uio_t)->uio_segflg == UIO_USERISPACE64 || \
 160           (a_uio_t)->uio_segflg == UIO_PHYS_USERSPACE64  || (a_uio_t)->uio_segflg == UIO_SYSSPACE64 || \
 161           (a_uio_t)->uio_segflg == UIO_PHYS_SYSSPACE64 )
 162
 163 #define UIO_IS_32_BIT_SPACE( a_uio_t )  \
 164         ( (a_uio_t)->uio_segflg == UIO_USERSPACE || (a_uio_t)->uio_segflg == UIO_USERISPACE || \
 165           (a_uio_t)->uio_segflg == UIO_SYSSPACE  || (a_uio_t)->uio_segflg == UIO_PHYS_USERSPACE || \
 166           (a_uio_t)->uio_segflg == UIO_USERISPACE32  || (a_uio_t)->uio_segflg == UIO_PHYS_USERSPACE32 || \
 167           (a_uio_t)->uio_segflg == UIO_SYSSPACE32  || (a_uio_t)->uio_segflg == UIO_PHYS_SYSSPACE32 || \
 168           (a_uio_t)->uio_segflg == UIO_PHYS_SYSSPACE || (a_uio_t)->uio_segflg == UIO_USERSPACE32 )
 169
 170 #define UIO_IS_USER_SPACE32( a_uio_t )  \
 171         ( (a_uio_t)->uio_segflg == UIO_USERSPACE32 || (a_uio_t)->uio_segflg == UIO_PHYS_USERSPACE32 || \
 172           (a_uio_t)->uio_segflg == UIO_USERISPACE32 )
 173 #define UIO_IS_USER_SPACE64( a_uio_t )  \
 174         ( (a_uio_t)->uio_segflg == UIO_USERSPACE64 || (a_uio_t)->uio_segflg == UIO_PHYS_USERSPACE64 || \
 175           (a_uio_t)->uio_segflg == UIO_USERISPACE64 )
 176 #define UIO_IS_USER_SPACE( a_uio_t )  \
 177         ( UIO_IS_USER_SPACE32((a_uio_t)) || UIO_IS_USER_SPACE64((a_uio_t)) || \
 178           (a_uio_t)->uio_segflg == UIO_USERSPACE || (a_uio_t)->uio_segflg == UIO_USERISPACE || \
 179            (a_uio_t)->uio_segflg == UIO_PHYS_USERSPACE )
 180
 181
 182 /*
 183  * W A R N I N G!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 184  * anything in this section will be removed.  please move to the uio KPI
 185  */
 186
 187 #if 1 // UIO_KPI - WARNING OBSOLETE!!!!   LP64todo - remove these!!!!
 188 // DO NOT USE THESE
 189 #define IS_UIO_USER_SPACE32( segflg )  \
 190         ( (segflg) == UIO_USERSPACE32 || (segflg) == UIO_PHYS_USERSPACE32 || \
 191           (segflg) == UIO_USERISPACE32 )
 192 #define IS_UIO_USER_SPACE64( segflg )  \
 193         ( (segflg) == UIO_USERSPACE64 || (segflg) == UIO_PHYS_USERSPACE64 || \
 194           (segflg) == UIO_USERISPACE64 )
 195 #define IS_UIO_USER_SPACE( segflg )  \
 196         ( IS_UIO_USER_SPACE32((segflg)) || IS_UIO_USER_SPACE64((segflg)) || \
 197           (segflg) == UIO_USERSPACE || (segflg) == UIO_USERISPACE || \
 198            (segflg) == UIO_PHYS_USERSPACE )
 199
 200 #define IS_UIO_SYS_SPACE32( segflg )  \
 201         ( (segflg) == UIO_SYSSPACE32 || (segflg) == UIO_PHYS_SYSSPACE32 || \
 202           (segflg) == UIO_SYSSPACE || (segflg) == UIO_PHYS_SYSSPACE )
 203 #define IS_UIO_SYS_SPACE64( segflg )  \
 204         ( (segflg) == UIO_SYSSPACE64 || (segflg) == UIO_PHYS_SYSSPACE64 )
 205 #define IS_UIO_SYS_SPACE( segflg )  \
 206         ( IS_UIO_SYS_SPACE32((segflg)) || IS_UIO_SYS_SPACE64((segflg)) )
 207
 208 #define IS_OBSOLETE_UIO_SEGFLG(segflg)  \
 209         ( (segflg) == UIO_USERSPACE || (segflg) == UIO_USERISPACE || \
 210           (segflg) == UIO_SYSSPACE  || (segflg) == UIO_PHYS_USERSPACE || \
 211           (segflg) == UIO_PHYS_SYSSPACE )
 212 #define IS_VALID_UIO_SEGFLG(segflg)  \
 213         ( IS_UIO_USER_SPACE((segflg)) || IS_UIO_SYS_SPACE((segflg)) )
 214
 215 /* accessor routines for uio and embedded iovecs */
 216 // WARNING all these are OBSOLETE!!!!
 217 static inline int64_t uio_uio_resid( struct uio *a_uiop );
 218 static inline void uio_uio_resid_add( struct uio *a_uiop, int64_t a_amount );
 219 static inline void uio_uio_resid_set( struct uio *a_uiop, int64_t a_value );
 220
 221 static inline void uio_iov_base_add( struct uio *a_uiop, int64_t a_amount );
 222 static inline void uio_iov_base_add_at( struct uio *a_uiop, int64_t a_amount, int a_index );
 223 static inline void uio_iov_len_add( struct uio *a_uiop, int64_t a_amount );
 224 static inline void uio_iov_len_add_at( struct uio *a_uiop, int64_t a_amount, int a_index );
 225 static inline u_int64_t uio_iov_len( struct uio *a_uiop );
 226 static inline u_int64_t uio_iov_len_at( struct uio *a_uiop, int a_index );
 227 static inline u_int64_t uio_iov_base( struct uio *a_uiop );
 228 static inline u_int64_t uio_iov_base_at( struct uio *a_uiop, int a_index );
 229 static inline void uio_next_iov( struct uio *a_uiop );
 230 static inline void uio_iov_len_set( struct uio *a_uiop, u_int64_t a_value );
 231 static inline void uio_iov_len_set_at( struct uio *a_uiop, u_int64_t a_value, int a_index );
 232
 233
 234 static inline int64_t uio_uio_resid( struct uio *a_uiop )
 235 {
 236 //#warning obsolete - use uio_resid call
 237         return( (int64_t)a_uiop->uio_resid );
 238 }
 239
 240 static inline void uio_uio_resid_add( struct uio *a_uiop, int64_t a_amount )
 241 {
 242 //#warning obsolete - use uio_update or uio_addiov or uio_setresid if in kernel and you must
 243         a_uiop->uio_resid += ((int32_t) a_amount);
 244 }
 245
 246 static inline void uio_uio_resid_set( struct uio *a_uiop, int64_t a_value )
 247 {
 248 //#warning obsolete - use uio_update or uio_addiov or uio_setresid if in kernel and you must
 249         a_uiop->uio_resid = a_value;
 250 }
 251
 252 static inline u_int64_t uio_iov_base( struct uio *a_uiop )
 253 {
 254 //#warning obsolete - use uio_curriovbase call
 255         return(uio_iov_base_at(a_uiop, 0));
 256 }
 257
 258 static inline u_int64_t uio_iov_base_at( struct uio *a_uiop, int a_index )
 259 {
 260 //#warning obsolete - use uio_curriovbase call
 261         if (IS_UIO_USER_SPACE32(a_uiop->uio_segflg) || IS_OBSOLETE_UIO_SEGFLG(a_uiop->uio_segflg)) {
 262                 /* user space iovec was most likely a struct iovec so we must cast to uintptr_t first */
 263                 return((u_int64_t)((uintptr_t)a_uiop->uio_iovs.iov32p[a_index].iov_base));
 264         }
 265         if (IS_UIO_SYS_SPACE32(a_uiop->uio_segflg)) {
 266                 return((u_int64_t)a_uiop->uio_iovs.iov32p[a_index].iov_base);
 267         }
 268         if (IS_UIO_USER_SPACE64(a_uiop->uio_segflg) || IS_UIO_SYS_SPACE64(a_uiop->uio_segflg)) {
 269                 return(a_uiop->uio_iovs.iov64p[a_index].iov_base);
 270         }
 271         return(0);
 272 }
 273
 274 static inline u_int64_t uio_iov_len( struct uio *a_uiop )
 275 {
 276 //#warning obsolete - use uio_curriovlen call
 277         return(uio_iov_len_at(a_uiop, 0));
 278 }
 279
 280 static inline u_int64_t uio_iov_len_at( struct uio *a_uiop, int a_index )
 281 {
 282 //#warning obsolete - use uio_curriovlen call
 283         if (IS_UIO_USER_SPACE32(a_uiop->uio_segflg) ||
 284                 IS_UIO_SYS_SPACE32(a_uiop->uio_segflg)  ||
 285                 IS_OBSOLETE_UIO_SEGFLG(a_uiop->uio_segflg)) {
 286                 return((u_int64_t)a_uiop->uio_iovs.iov32p[a_index].iov_len);
 287         }
 288         if (IS_UIO_USER_SPACE64(a_uiop->uio_segflg) || IS_UIO_SYS_SPACE64(a_uiop->uio_segflg)) {
 289                 return(a_uiop->uio_iovs.iov64p[a_index].iov_len);
 290         }
 291         return(0);
 292 }
 293
 294 static inline void uio_iov_len_set_at( struct uio *a_uiop, u_int64_t a_value, int a_index )
 295 {
 296 //#warning obsolete - use uio_addiov call
 297         if (IS_UIO_USER_SPACE32(a_uiop->uio_segflg) ||
 298                 IS_UIO_SYS_SPACE32(a_uiop->uio_segflg)  ||
 299                 IS_OBSOLETE_UIO_SEGFLG(a_uiop->uio_segflg)) {
 300                 a_uiop->uio_iovs.iov32p[a_index].iov_len = a_value;
 301         }
 302         else if (IS_UIO_USER_SPACE64(a_uiop->uio_segflg) || IS_UIO_SYS_SPACE64(a_uiop->uio_segflg)) {
 303                 a_uiop->uio_iovs.iov64p[a_index].iov_len = a_value;
 304         }
 305         return;
 306 }
 307
 308 static inline void uio_iov_len_set( struct uio *a_uiop, u_int64_t a_value )
 309 {
 310 //#warning obsolete - use uio_addiov call
 311         return(uio_iov_len_set_at(a_uiop, a_value, 0));
 312 }
 313
 314 static inline void uio_iov_len_add_at( struct uio *a_uiop, int64_t a_amount, int a_index )
 315 {
 316 //#warning obsolete - use uio_addiov call
 317         if (IS_UIO_USER_SPACE32(a_uiop->uio_segflg) ||
 318                 IS_UIO_SYS_SPACE32(a_uiop->uio_segflg)  ||
 319                 IS_OBSOLETE_UIO_SEGFLG(a_uiop->uio_segflg)) {
 320                 a_uiop->uio_iovs.iov32p[a_index].iov_len += ((int32_t) a_amount);
 321         }
 322         else if (IS_UIO_USER_SPACE64(a_uiop->uio_segflg) || IS_UIO_SYS_SPACE64(a_uiop->uio_segflg)) {
 323                 a_uiop->uio_iovs.iov64p[a_index].iov_len += a_amount;
 324         }
 325         return;
 326 }
 327
 328 static inline void uio_iov_len_add( struct uio *a_uiop, int64_t a_amount )
 329 {
 330 //#warning obsolete - use uio_addiov call
 331         return(uio_iov_len_add_at(a_uiop, a_amount, 0));
 332 }
 333
 334 static inline void uio_iov_base_add_at( struct uio *a_uiop, int64_t a_amount, int a_index )
 335 {
 336 //#warning obsolete - use uio_addiov call
 337         if (IS_UIO_USER_SPACE32(a_uiop->uio_segflg) ||
 338                 IS_UIO_SYS_SPACE32(a_uiop->uio_segflg)  ||
 339                 IS_OBSOLETE_UIO_SEGFLG(a_uiop->uio_segflg)) {
 340                 a_uiop->uio_iovs.iov32p[a_index].iov_base += ((int32_t) a_amount);
 341         }
 342         else if (IS_UIO_USER_SPACE64(a_uiop->uio_segflg) || IS_UIO_SYS_SPACE64(a_uiop->uio_segflg)) {
 343                 a_uiop->uio_iovs.iov64p[a_index].iov_base += a_amount;
 344         }
 345         return;
 346 }
 347
 348 static inline void uio_iov_base_add( struct uio *a_uiop, int64_t a_amount )
 349 {
 350 //#warning obsolete - use uio_addiov call
 351         return(uio_iov_base_add_at(a_uiop, a_amount, 0));
 352 }
 353
 354 static inline void uio_next_iov( struct uio *a_uiop )
 355 {
 356 //#warning obsolete - use uio_update call
 357         if (IS_UIO_USER_SPACE32(a_uiop->uio_segflg) ||
 358                 IS_UIO_SYS_SPACE32(a_uiop->uio_segflg)  ||
 359                 IS_OBSOLETE_UIO_SEGFLG(a_uiop->uio_segflg)) {
 360                 a_uiop->uio_iovs.iov32p++;
 361         }
 362         else if (IS_UIO_USER_SPACE64(a_uiop->uio_segflg) || IS_UIO_SYS_SPACE64(a_uiop->uio_segflg)) {
 363                 a_uiop->uio_iovs.iov64p++;
 364         }
 365         return;
 366 }
 367
 368 /*
 369  * WARNING - this routine relies on iovec_64 being larger than iovec_32 and will
 370  * not work if you are going to initialize an array of iovec_64 as an array of
 371  * iovec_32 then pass that array in a uio (since uio_iov is always expected to
 372  * be an array of like sized iovecs - see how uio_next_iov gets to the next iovec)
 373  */
 374 static inline void init_iovec( u_int64_t a_base,
 375                                                            u_int64_t a_len,
 376                                                            struct iovec_64 *a_iovp,
 377                                                            int is_64bit_process )
 378 {
 379 //#warning obsolete - use uio_create call
 380         if (is_64bit_process) {
 381                 a_iovp->iov_base = a_base;
 382                 a_iovp->iov_len = a_len;
 383         }
 384         else {
 385                 struct iovec_32 *a_iov32p = (struct iovec_32 *) a_iovp;
 386                 a_iov32p->iov_base = a_base;
 387                 a_iov32p->iov_len = a_len;
 388         }
 389         return;
 390 }
 391
 392 #define INIT_UIO_BASE( uiop, iovcnt, offset, resid, rw, procp ) \
 393 { \
 394         (uiop)->uio_iovcnt = (iovcnt); \
 395         (uiop)->uio_offset = (offset); \
 396         (uiop)->uio_resid = (resid); \
 397         (uiop)->uio_rw = (rw); \
 398         (uiop)->uio_procp = (procp); \
 399 }
 400 #define INIT_UIO_USER32( uiop, iovp, iovcnt, offset, resid, rw, procp ) \
 401 { \
 402         (uiop)->uio_iovs.iov32p = (iovp);  \
 403         (uiop)->uio_segflg = UIO_USERSPACE; \
 404         INIT_UIO_BASE((uiop), (iovcnt), (offset), (resid), (rw), (procp)); \
 405 }
 406 #define INIT_UIO_USER64( uiop, iovp, iovcnt, offset, resid, rw, procp ) \
 407 { \
 408         (uiop)->uio_iovs.iov64p = (iovp);  \
 409         (uiop)->uio_segflg = UIO_USERSPACE64; \
 410         INIT_UIO_BASE((uiop), (iovcnt), (offset), (resid), (rw), (procp)); \
 411 }
 412 #define INIT_UIO_SYS32( uiop, iovp, iovcnt, offset, resid, rw, procp ) \
 413 { \
 414         (uiop)->uio_iovs.iov32p = (iovp);  \
 415         (uiop)->uio_segflg = UIO_SYSSPACE; \
 416         INIT_UIO_BASE((uiop), (iovcnt), (offset), (resid), (rw), (procp)); \
 417 }
 418 #define INIT_UIO_USERSPACE( uiop, iovp, iovcnt, offset, resid, rw, procp ) \
 419 { \
 420         if (IS_64BIT_PROCESS((procp))) { \
 421                 (uiop)->uio_iovs.iov64p = (iovp);  \
 422                 (uiop)->uio_segflg = UIO_USERSPACE64; \
 423         } \
 424         else {  \
 425                 (uiop)->uio_iovs.iov32p = (struct iovec_32 *)(iovp);  \
 426                 (uiop)->uio_segflg = UIO_USERSPACE; \
 427         }  \
 428         INIT_UIO_BASE((uiop), (iovcnt), (offset), (resid), (rw), (procp)); \
 429 }
 430 #define INIT_UIO_SYSSPACE( uiop, iovp, iovcnt, offset, resid, rw, procp ) \
 431 { \
 432         if (0) { /* we do not support 64-bit system space yet */ \
 433                 (uiop)->uio_iovs.iov64p = (iovp);  \
 434                 (uiop)->uio_segflg = UIO_SYSSPACE64; \
 435         } \
 436         else {  \
 437                 (uiop)->uio_iovs.iov32p = (struct iovec_32 *)(iovp);  \
 438                 (uiop)->uio_segflg = UIO_SYSSPACE; \
 439         }  \
 440         INIT_UIO_BASE((uiop), (iovcnt), (offset), (resid), (rw), (procp)); \
 441 }
 442 #endif // UIO_KPI - WARNING OBSOLETE!!!!
 443
 444
 445 #endif /* KERNEL */
 446 #endif /* !_SYS_UIO_INTERNAL_H_ */