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   1 /*
   2  * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
   3  * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
   4  * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
   5  * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. The name of the author may not be used to endorse or promote products
  17  *    derived from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  *      $Id$
  31  */
  32
  33 #include "defs.h"
  34
  35 #ifdef LINUX
  36 #include <linux/mman.h>
  37 #endif
  38 #include <sys/mman.h>
  39
  40 #if defined(LINUX) && defined(__i386__)
  41 #include <asm/ldt.h>
  42 #endif
  43
  44 int
  45 sys_brk(tcp)
  46 struct tcb *tcp;
  47 {
  48         if (entering(tcp)) {
  49                 tprintf("%#lx", tcp->u_arg[0]);
  50         }
  51 #ifdef LINUX
  52         return RVAL_HEX;
  53 #else
  54         return 0;
  55 #endif
  56 }
  57
  58 int
  59 sys_sbrk(tcp)
  60 struct tcb *tcp;
  61 {
  62         if (entering(tcp)) {
  63                 tprintf("%lu", tcp->u_arg[0]);
  64         }
  65         return RVAL_HEX;
  66 }
  67
  68 static struct xlat mmap_prot[] = {
  69         { PROT_NONE,    "PROT_NONE",    },
  70         { PROT_READ,    "PROT_READ"     },
  71         { PROT_WRITE,   "PROT_WRITE"    },
  72         { PROT_EXEC,    "PROT_EXEC"     },
  73         { 0,            NULL            },
  74 };
  75
  76 static struct xlat mmap_flags[] = {
  77         { MAP_SHARED,   "MAP_SHARED"    },
  78         { MAP_PRIVATE,  "MAP_PRIVATE"   },
  79         { MAP_FIXED,    "MAP_FIXED"     },
  80 #ifdef MAP_ANONYMOUS
  81         { MAP_ANONYMOUS,"MAP_ANONYMOUS" },
  82 #endif
  83 #ifdef MAP_RENAME
  84         { MAP_RENAME,   "MAP_RENAME"    },
  85 #endif
  86 #ifdef MAP_NORESERVE
  87         { MAP_NORESERVE,"MAP_NORESERVE" },
  88 #endif
  89         /*
  90          * XXX - this was introduced in SunOS 4.x to distinguish between
  91          * the old pre-4.x "mmap()", which:
  92          *
  93          *      only let you map devices with an "mmap" routine (e.g.,
  94          *      frame buffers) in;
  95          *
  96          *      required you to specify the mapping address;
  97          *
  98          *      returned 0 on success and -1 on failure;
  99          *
 100          * memory and which, and the 4.x "mmap()" which:
 101          *
 102          *      can map plain files;
 103          *
 104          *      can be asked to pick where to map the file;
 105          *
 106          *      returns the address where it mapped the file on success
 107          *      and -1 on failure.
 108          *
 109          * It's not actually used in source code that calls "mmap()"; the
 110          * "mmap()" routine adds it for you.
 111          *
 112          * It'd be nice to come up with some way of eliminating it from
 113          * the flags, e.g. reporting calls *without* it as "old_mmap()"
 114          * and calls with it as "mmap()".
 115          */
 116 #ifdef _MAP_NEW
 117         { _MAP_NEW,     "_MAP_NEW"      },
 118 #endif
 119 #ifdef MAP_GROWSDOWN
 120         { MAP_GROWSDOWN,"MAP_GROWSDOWN" },
 121 #endif
 122 #ifdef MAP_DENYWRITE
 123         { MAP_DENYWRITE,"MAP_DENYWRITE" },
 124 #endif
 125 #ifdef MAP_EXECUTABLE
 126         { MAP_EXECUTABLE,"MAP_EXECUTABLE"},
 127 #endif
 128 #ifdef MAP_INHERIT
 129         { MAP_INHERIT,"MAP_INHERIT"     },
 130 #endif
 131 #ifdef MAP_FILE
 132         { MAP_FILE,"MAP_FILE"},
 133 #endif
 134 #ifdef MAP_LOCKED
 135         { MAP_LOCKED,"MAP_LOCKED"},
 136 #endif
 137         /* FreeBSD ones */
 138 #ifdef MAP_ANON
 139         { MAP_ANON,             "MAP_ANON"      },
 140 #endif
 141 #ifdef MAP_HASSEMAPHORE
 142         { MAP_HASSEMAPHORE,     "MAP_HASSEMAPHORE"      },
 143 #endif
 144 #ifdef MAP_STACK
 145         { MAP_STACK,            "MAP_STACK"     },
 146 #endif
 147 #ifdef MAP_NOSYNC
 148         { MAP_NOSYNC,           "MAP_NOSYNC"    },
 149 #endif
 150 #ifdef MAP_NOCORE
 151         { MAP_NOCORE,           "MAP_NOCORE"    },
 152 #endif
 153         { 0,            NULL            },
 154 };
 155
 156 static
 157 int
 158 print_mmap(tcp,u_arg)
 159 struct tcb *tcp;
 160 long *u_arg;
 161 {
 162         if (entering(tcp)) {
 163                 /* addr */
 164                 if (!u_arg[0])
 165                         tprintf("NULL, ");
 166                 else
 167                         tprintf("%#lx, ", u_arg[0]);
 168                 /* len */
 169                 tprintf("%lu, ", u_arg[1]);
 170                 /* prot */
 171                 printflags(mmap_prot, u_arg[2]);
 172                 tprintf(", ");
 173                 /* flags */
 174 #ifdef MAP_TYPE
 175                 printxval(mmap_flags, u_arg[3] & MAP_TYPE, "MAP_???");
 176                 addflags(mmap_flags, u_arg[3] & ~MAP_TYPE);
 177 #else
 178                 printflags(mmap_flags, u_arg[3]);
 179 #endif
 180                 /* fd */
 181                 tprintf(", %ld, ", u_arg[4]);
 182                 /* offset */
 183                 tprintf("%#lx", u_arg[5]);
 184         }
 185         return RVAL_HEX;
 186 }
 187
 188 #ifdef LINUX
 189 int sys_old_mmap(tcp)
 190 struct tcb *tcp;
 191 {
 192     long u_arg[6];
 193
 194 #if     defined(IA64)
 195     int i, v;
 196     /*
 197      *  IA64 processes never call this routine, they only use the
 198      *  new `sys_mmap' interface.  This code converts the integer
 199      *  arguments that the IA32 process pushed onto the stack into
 200      *  longs.
 201      *
 202      *  Note that addresses with bit 31 set will be sign extended.
 203      *  Fortunately, those addresses are not currently being generated
 204      *  for IA32 processes so it's not a problem.
 205      */
 206     for (i = 0; i < 6; i++)
 207         if (umove(tcp, tcp->u_arg[0] + (i * sizeof(int)), &v) == -1)
 208                 return 0;
 209         else
 210                 u_arg[i] = v;
 211 #else   // defined(IA64)
 212     if (umoven(tcp, tcp->u_arg[0], sizeof u_arg, (char *) u_arg) == -1)
 213             return 0;
 214 #endif  // defined(IA64)
 215     return print_mmap(tcp, u_arg);
 216
 217 }
 218 #endif
 219
 220 int
 221 sys_mmap(tcp)
 222 struct tcb *tcp;
 223 {
 224     return print_mmap(tcp, tcp->u_arg);
 225 }
 226
 227 #if _LFS64_LARGEFILE
 228 int
 229 sys_mmap64(tcp)
 230 struct tcb *tcp;
 231 {
 232 #ifdef linux
 233 #ifdef ALPHA
 234         long *u_arg = tcp->u_arg;
 235 #else /* !ALPHA */
 236         long u_arg[7];
 237 #endif /* !ALPHA */
 238 #else /* !linux */
 239         long *u_arg = tcp->u_arg;
 240 #endif /* !linux */
 241
 242         if (entering(tcp)) {
 243 #ifdef linux
 244 #ifndef ALPHA
 245                 if (umoven(tcp, tcp->u_arg[0], sizeof u_arg,
 246                                 (char *) u_arg) == -1)
 247                         return 0;
 248 #endif /* ALPHA */
 249 #endif /* linux */
 250
 251                 /* addr */
 252                 tprintf("%#lx, ", u_arg[0]);
 253                 /* len */
 254                 tprintf("%lu, ", u_arg[1]);
 255                 /* prot */
 256                 printflags(mmap_prot, u_arg[2]);
 257                 tprintf(", ");
 258                 /* flags */
 259                 printxval(mmap_flags, u_arg[3] & MAP_TYPE, "MAP_???");
 260                 addflags(mmap_flags, u_arg[3] & ~MAP_TYPE);
 261                 /* fd */
 262                 tprintf(", %ld, ", u_arg[4]);
 263                 /* offset */
 264                 tprintf("%#llx", get64(u_arg[5], u_arg[6]));
 265         }
 266         return RVAL_HEX;
 267 }
 268 #endif
 269
 270
 271 int
 272 sys_munmap(tcp)
 273 struct tcb *tcp;
 274 {
 275         if (entering(tcp)) {
 276                 tprintf("%#lx, %lu",
 277                         tcp->u_arg[0], tcp->u_arg[1]);
 278         }
 279         return 0;
 280 }
 281
 282 int
 283 sys_mprotect(tcp)
 284 struct tcb *tcp;
 285 {
 286         if (entering(tcp)) {
 287                 tprintf("%#lx, %lu, ",
 288                         tcp->u_arg[0], tcp->u_arg[1]);
 289                 if (!printflags(mmap_prot, tcp->u_arg[2]))
 290                         tprintf("PROT_???");
 291         }
 292         return 0;
 293 }
 294
 295 #ifdef LINUX
 296
 297 static struct xlat mremap_flags[] = {
 298         { MREMAP_MAYMOVE,       "MREMAP_MAYMOVE"        },
 299         { 0,                    NULL                    }
 300 };
 301
 302 int
 303 sys_mremap(tcp)
 304 struct tcb *tcp;
 305 {
 306         if (entering(tcp)) {
 307                 tprintf("%#lx, %lu, %lu, ", tcp->u_arg[0], tcp->u_arg[1],
 308                         tcp->u_arg[2]);
 309                 printflags(mremap_flags, tcp->u_arg[3]);
 310         }
 311         return RVAL_HEX;
 312 }
 313
 314 static struct xlat madvise_flags[] = {
 315 #ifdef MADV_NORMAL
 316         { MADV_NORMAL,          "MADV_NORMAL" },
 317 #endif
 318 #ifdef MADZV_RANDOM
 319         { MADV_RANDOM,          "MADV_RANDOM" },
 320 #endif
 321 #ifdef MADV_SEQUENTIAL
 322         { MADV_SEQUENTIAL,      "MADV_SEQUENTIAL" },
 323 #endif
 324 #ifdef MADV_WILLNEED
 325         { MADV_WILLNEED,        "MADV_WILLNEED" },
 326 #endif
 327 #ifdef MADV_DONTNED
 328         { MADV_DONTNEED,        "MADV_DONTNEED" },
 329 #endif
 330         { 0,                    NULL },
 331 };
 332
 333
 334 int
 335 sys_madvise(tcp)
 336 struct tcb *tcp;
 337 {
 338         if (entering(tcp)) {
 339                 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
 340                 printflags(madvise_flags, tcp->u_arg[2]);
 341         }
 342         return 0;
 343 }
 344
 345
 346 static struct xlat mlockall_flags[] = {
 347 #ifdef MCL_CURRENT
 348         { MCL_CURRENT,  "MCL_CURRENT" },
 349 #endif
 350 #ifdef MCL_FUTURE
 351         { MCL_FUTURE,   "MCL_FUTURE" },
 352 #endif
 353         { 0,            NULL}
 354 };
 355
 356 int
 357 sys_mlockall(tcp)
 358 struct tcb *tcp;
 359 {
 360         if (entering(tcp)) {
 361                 printflags(mlockall_flags, tcp->u_arg[0]);
 362         }
 363         return 0;
 364 }
 365
 366
 367 #endif /* LINUX */
 368
 369 #ifdef MS_ASYNC
 370
 371 static struct xlat mctl_sync[] = {
 372         { MS_ASYNC,     "MS_ASYNC"      },
 373         { MS_INVALIDATE,"MS_INVALIDATE" },
 374 #ifdef MS_SYNC
 375         { MS_SYNC,      "MS_SYNC"       },
 376 #endif
 377         { 0,            NULL            },
 378 };
 379
 380 int
 381 sys_msync(tcp)
 382 struct tcb *tcp;
 383 {
 384         if (entering(tcp)) {
 385                 /* addr */
 386                 tprintf("%#lx", tcp->u_arg[0]);
 387                 /* len */
 388                 tprintf(", %lu, ", tcp->u_arg[1]);
 389                 /* flags */
 390                 if (!printflags(mctl_sync, tcp->u_arg[2]))
 391                         tprintf("MS_???");
 392         }
 393         return 0;
 394 }
 395
 396 #endif /* MS_ASYNC */
 397
 398 #ifdef MC_SYNC
 399
 400 static struct xlat mctl_funcs[] = {
 401         { MC_LOCK,      "MC_LOCK"       },
 402         { MC_LOCKAS,    "MC_LOCKAS"     },
 403         { MC_SYNC,      "MC_SYNC"       },
 404         { MC_UNLOCK,    "MC_UNLOCK"     },
 405         { MC_UNLOCKAS,  "MC_UNLOCKAS"   },
 406         { 0,            NULL            },
 407 };
 408
 409 static struct xlat mctl_lockas[] = {
 410         { MCL_CURRENT,  "MCL_CURRENT"   },
 411         { MCL_FUTURE,   "MCL_FUTURE"    },
 412         { 0,            NULL            },
 413 };
 414
 415 int
 416 sys_mctl(tcp)
 417 struct tcb *tcp;
 418 {
 419         int arg, function;
 420
 421         if (entering(tcp)) {
 422                 /* addr */
 423                 tprintf("%#lx", tcp->u_arg[0]);
 424                 /* len */
 425                 tprintf(", %lu, ", tcp->u_arg[1]);
 426                 /* function */
 427                 function = tcp->u_arg[2];
 428                 if (!printflags(mctl_funcs, function))
 429                         tprintf("MC_???");
 430                 /* arg */
 431                 arg = tcp->u_arg[3];
 432                 tprintf(", ");
 433                 switch (function) {
 434                 case MC_SYNC:
 435                         if (!printflags(mctl_sync, arg))
 436                                 tprintf("MS_???");
 437                         break;
 438                 case MC_LOCKAS:
 439                         if (!printflags(mctl_lockas, arg))
 440                                 tprintf("MCL_???");
 441                         break;
 442                 default:
 443                         tprintf("%#x", arg);
 444                         break;
 445                 }
 446         }
 447         return 0;
 448 }
 449
 450 #endif /* MC_SYNC */
 451
 452 int
 453 sys_mincore(tcp)
 454 struct tcb *tcp;
 455 {
 456         int i, len;
 457         char *vec = NULL;
 458
 459         if (entering(tcp)) {
 460                 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
 461         } else {
 462                 len = tcp->u_arg[1];
 463                 if (syserror(tcp) || tcp->u_arg[2] == 0 ||
 464                         (vec = malloc((u_int)len)) == NULL ||
 465                         umoven(tcp, tcp->u_arg[2], len, vec) < 0)
 466                         tprintf("%#lx", tcp->u_arg[2]);
 467                 else {
 468                         tprintf("[");
 469                         for (i = 0; i < len; i++) {
 470                                 if (abbrev(tcp) && i >= max_strlen) {
 471                                         tprintf("...");
 472                                         break;
 473                                 }
 474                                 tprintf((vec[i] & 1) ? "1" : "0");
 475                         }
 476                         tprintf("]");
 477                 }
 478                 if (vec)
 479                         free(vec);
 480         }
 481         return 0;
 482 }
 483
 484 int
 485 sys_getpagesize(tcp)
 486 struct tcb *tcp;
 487 {
 488         if (exiting(tcp))
 489                 return RVAL_HEX;
 490         return 0;
 491 }
 492
 493 #if defined(LINUX) && defined(__i386__)
 494 int
 495 sys_modify_ldt(tcp)
 496 struct tcb *tcp;
 497 {
 498         if (entering(tcp)) {
 499                 struct modify_ldt_ldt_s copy;
 500                 tprintf("%ld", tcp->u_arg[0]);
 501                 if (tcp->u_arg[1] == 0
 502                                 || tcp->u_arg[2] != sizeof (struct modify_ldt_ldt_s)
 503                                 || umove(tcp, tcp->u_arg[1], &copy) == -1)
 504                         tprintf(", %lx", tcp->u_arg[1]);
 505                 else {
 506                         tprintf(", {entry_number:%d, ", copy.entry_number);
 507                         if (!verbose(tcp))
 508                                 tprintf("...}");
 509                         else {
 510                                 tprintf("base_addr:%#08lx, "
 511                                                 "limit:%d, "
 512                                                 "seg_32bit:%d, "
 513                                                 "contents:%d, "
 514                                                 "read_exec_only:%d, "
 515                                                 "limit_in_pages:%d, "
 516                                                 "seg_not_present:%d, "
 517                                                 "useable:%d}",
 518                                                 copy.base_addr,
 519                                                 copy.limit,
 520                                                 copy.seg_32bit,
 521                                                 copy.contents,
 522                                                 copy.read_exec_only,
 523                                                 copy.limit_in_pages,
 524                                                 copy.seg_not_present,
 525                                                 copy.useable);
 526                         }
 527                 }
 528                 tprintf(", %lu", tcp->u_arg[2]);
 529         }
 530         return 0;
 531 }
 532 #endif /* LINUX && __i386__ */
 533