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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  * Copyright (c) 2000 PocketPenguins Inc.  Linux for Hitachi SuperH
   7  *                    port by Greg Banks <gbanks@pocketpenguins.com>
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include "defs.h"
  34 #include <asm/mman.h>
  35 #include <sys/mman.h>
  36
  37 static unsigned long
  38 get_pagesize()
  39 {
  40         static unsigned long pagesize;
  41
  42         if (!pagesize)
  43                 pagesize = sysconf(_SC_PAGESIZE);
  44         return pagesize;
  45 }
  46
  47 int
  48 sys_brk(struct tcb *tcp)
  49 {
  50         if (entering(tcp)) {
  51                 tprintf("%#lx", tcp->u_arg[0]);
  52         }
  53         return RVAL_HEX;
  54 }
  55
  56 #include "xlat/mmap_prot.h"
  57
  58 #include "xlat/mmap_flags.h"
  59
  60 static int
  61 print_mmap(struct tcb *tcp, long *u_arg, unsigned long long offset)
  62 {
  63         if (entering(tcp)) {
  64                 /* addr */
  65                 if (!u_arg[0])
  66                         tprints("NULL, ");
  67                 else
  68                         tprintf("%#lx, ", u_arg[0]);
  69                 /* len */
  70                 tprintf("%lu, ", u_arg[1]);
  71                 /* prot */
  72                 printflags(mmap_prot, u_arg[2], "PROT_???");
  73                 tprints(", ");
  74                 /* flags */
  75 #ifdef MAP_TYPE
  76                 printxval(mmap_flags, u_arg[3] & MAP_TYPE, "MAP_???");
  77                 addflags(mmap_flags, u_arg[3] & ~MAP_TYPE);
  78 #else
  79                 printflags(mmap_flags, u_arg[3], "MAP_???");
  80 #endif
  81                 tprints(", ");
  82                 /* fd */
  83                 printfd(tcp, u_arg[4]);
  84                 /* offset */
  85                 tprintf(", %#llx", offset);
  86         }
  87         return RVAL_HEX;
  88 }
  89
  90 /* Syscall name<->function correspondence is messed up on many arches.
  91  * For example:
  92  * i386 has __NR_mmap == 90, and it is "old mmap", and
  93  * also it has __NR_mmap2 == 192, which is a "new mmap with page offsets".
  94  * But x86_64 has just one __NR_mmap == 9, a "new mmap with byte offsets".
  95  * Confused? Me too!
  96  */
  97
  98 /* Params are pointed to by u_arg[0], offset is in bytes */
  99 int
 100 sys_old_mmap(struct tcb *tcp)
 101 {
 102         long u_arg[6];
 103 #if defined(IA64)
 104         /*
 105          * IA64 processes never call this routine, they only use the
 106          * new 'sys_mmap' interface. Only IA32 processes come here.
 107          */
 108         int i;
 109         unsigned narrow_arg[6];
 110         if (umoven(tcp, tcp->u_arg[0], sizeof(narrow_arg), (char *) narrow_arg) == -1)
 111                 return 0;
 112         for (i = 0; i < 6; i++)
 113                 u_arg[i] = (unsigned long) narrow_arg[i];
 114 #elif defined(X86_64)
 115         /* We are here only in personality 1 (i386) */
 116         int i;
 117         unsigned narrow_arg[6];
 118         if (umoven(tcp, tcp->u_arg[0], sizeof(narrow_arg), (char *) narrow_arg) == -1)
 119                 return 0;
 120         for (i = 0; i < 6; ++i)
 121                 u_arg[i] = (unsigned long) narrow_arg[i];
 122 #else
 123         if (umoven(tcp, tcp->u_arg[0], sizeof(u_arg), (char *) u_arg) == -1)
 124                 return 0;
 125 #endif
 126         return print_mmap(tcp, u_arg, (unsigned long) u_arg[5]);
 127 }
 128
 129 #if defined(S390)
 130 /* Params are pointed to by u_arg[0], offset is in pages */
 131 int
 132 sys_old_mmap_pgoff(struct tcb *tcp)
 133 {
 134         long u_arg[5];
 135         int i;
 136         unsigned narrow_arg[6];
 137         unsigned long long offset;
 138         if (umoven(tcp, tcp->u_arg[0], sizeof(narrow_arg), (char *) narrow_arg) == -1)
 139                 return 0;
 140         for (i = 0; i < 5; i++)
 141                 u_arg[i] = (unsigned long) narrow_arg[i];
 142         offset = narrow_arg[5];
 143         offset *= get_pagesize();
 144         return print_mmap(tcp, u_arg, offset);
 145 }
 146 #endif
 147
 148 /* Params are passed directly, offset is in bytes */
 149 int
 150 sys_mmap(struct tcb *tcp)
 151 {
 152         unsigned long long offset = (unsigned long) tcp->u_arg[5];
 153 #if defined(LINUX_MIPSN32) || defined(X32)
 154         /* Try test/x32_mmap.c */
 155         offset = tcp->ext_arg[5];
 156 #endif
 157         /* Example of kernel-side handling of this variety of mmap:
 158          * arch/x86/kernel/sys_x86_64.c::SYSCALL_DEFINE6(mmap, ...) calls
 159          * sys_mmap_pgoff(..., off >> PAGE_SHIFT); i.e. off is in bytes,
 160          * since the above code converts off to pages.
 161          */
 162         return print_mmap(tcp, tcp->u_arg, offset);
 163 }
 164
 165 /* Params are passed directly, offset is in pages */
 166 int
 167 sys_mmap_pgoff(struct tcb *tcp)
 168 {
 169         /* Try test/mmap_offset_decode.c */
 170         unsigned long long offset;
 171         offset = (unsigned long) tcp->u_arg[5];
 172         offset *= get_pagesize();
 173         return print_mmap(tcp, tcp->u_arg, offset);
 174 }
 175
 176 /* Params are passed directly, offset is in 4k units */
 177 int
 178 sys_mmap_4koff(struct tcb *tcp)
 179 {
 180         unsigned long long offset;
 181         offset = (unsigned long) tcp->u_arg[5];
 182         offset <<= 12;
 183         return print_mmap(tcp, tcp->u_arg, offset);
 184 }
 185
 186 int
 187 sys_munmap(struct tcb *tcp)
 188 {
 189         if (entering(tcp)) {
 190                 tprintf("%#lx, %lu",
 191                         tcp->u_arg[0], tcp->u_arg[1]);
 192         }
 193         return 0;
 194 }
 195
 196 int
 197 sys_mprotect(struct tcb *tcp)
 198 {
 199         if (entering(tcp)) {
 200                 tprintf("%#lx, %lu, ",
 201                         tcp->u_arg[0], tcp->u_arg[1]);
 202                 printflags(mmap_prot, tcp->u_arg[2], "PROT_???");
 203         }
 204         return 0;
 205 }
 206
 207 #include "xlat/mremap_flags.h"
 208
 209 int
 210 sys_mremap(struct tcb *tcp)
 211 {
 212         if (entering(tcp)) {
 213                 tprintf("%#lx, %lu, %lu, ", tcp->u_arg[0], tcp->u_arg[1],
 214                         tcp->u_arg[2]);
 215                 printflags(mremap_flags, tcp->u_arg[3], "MREMAP_???");
 216 #ifdef MREMAP_FIXED
 217                 if ((tcp->u_arg[3] & (MREMAP_MAYMOVE | MREMAP_FIXED)) ==
 218                     (MREMAP_MAYMOVE | MREMAP_FIXED))
 219                         tprintf(", %#lx", tcp->u_arg[4]);
 220 #endif
 221         }
 222         return RVAL_HEX;
 223 }
 224
 225 #include "xlat/madvise_cmds.h"
 226
 227 int
 228 sys_madvise(struct tcb *tcp)
 229 {
 230         if (entering(tcp)) {
 231                 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
 232                 printxval(madvise_cmds, tcp->u_arg[2], "MADV_???");
 233         }
 234         return 0;
 235 }
 236
 237 #include "xlat/mlockall_flags.h"
 238
 239 int
 240 sys_mlockall(struct tcb *tcp)
 241 {
 242         if (entering(tcp)) {
 243                 printflags(mlockall_flags, tcp->u_arg[0], "MCL_???");
 244         }
 245         return 0;
 246 }
 247
 248 #ifdef MS_ASYNC
 249
 250 #include "xlat/mctl_sync.h"
 251
 252 int
 253 sys_msync(struct tcb *tcp)
 254 {
 255         if (entering(tcp)) {
 256                 /* addr */
 257                 tprintf("%#lx", tcp->u_arg[0]);
 258                 /* len */
 259                 tprintf(", %lu, ", tcp->u_arg[1]);
 260                 /* flags */
 261                 printflags(mctl_sync, tcp->u_arg[2], "MS_???");
 262         }
 263         return 0;
 264 }
 265
 266 #endif /* MS_ASYNC */
 267
 268 #ifdef MC_SYNC
 269
 270 #include "xlat/mctl_funcs.h"
 271
 272 #include "xlat/mctl_lockas.h"
 273
 274 int
 275 sys_mctl(struct tcb *tcp)
 276 {
 277         int arg, function;
 278
 279         if (entering(tcp)) {
 280                 /* addr */
 281                 tprintf("%#lx", tcp->u_arg[0]);
 282                 /* len */
 283                 tprintf(", %lu, ", tcp->u_arg[1]);
 284                 /* function */
 285                 function = tcp->u_arg[2];
 286                 printflags(mctl_funcs, function, "MC_???");
 287                 /* arg */
 288                 arg = tcp->u_arg[3];
 289                 tprints(", ");
 290                 switch (function) {
 291                 case MC_SYNC:
 292                         printflags(mctl_sync, arg, "MS_???");
 293                         break;
 294                 case MC_LOCKAS:
 295                         printflags(mctl_lockas, arg, "MCL_???");
 296                         break;
 297                 default:
 298                         tprintf("%#x", arg);
 299                         break;
 300                 }
 301         }
 302         return 0;
 303 }
 304
 305 #endif /* MC_SYNC */
 306
 307 int
 308 sys_mincore(struct tcb *tcp)
 309 {
 310         if (entering(tcp)) {
 311                 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
 312         } else {
 313                 unsigned long i, len;
 314                 char *vec = NULL;
 315
 316                 len = tcp->u_arg[1];
 317                 if (syserror(tcp) || tcp->u_arg[2] == 0 ||
 318                         (vec = malloc(len)) == NULL ||
 319                         umoven(tcp, tcp->u_arg[2], len, vec) < 0)
 320                         tprintf("%#lx", tcp->u_arg[2]);
 321                 else {
 322                         tprints("[");
 323                         for (i = 0; i < len; i++) {
 324                                 if (abbrev(tcp) && i >= max_strlen) {
 325                                         tprints("...");
 326                                         break;
 327                                 }
 328                                 tprints((vec[i] & 1) ? "1" : "0");
 329                         }
 330                         tprints("]");
 331                 }
 332                 free(vec);
 333         }
 334         return 0;
 335 }
 336
 337 #if defined(ALPHA) || defined(IA64) || defined(SPARC) || defined(SPARC64)
 338 int
 339 sys_getpagesize(struct tcb *tcp)
 340 {
 341         if (exiting(tcp))
 342                 return RVAL_HEX;
 343         return 0;
 344 }
 345 #endif
 346
 347 int
 348 sys_remap_file_pages(struct tcb *tcp)
 349 {
 350         if (entering(tcp)) {
 351                 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
 352                 printflags(mmap_prot, tcp->u_arg[2], "PROT_???");
 353                 tprintf(", %lu, ", tcp->u_arg[3]);
 354 #ifdef MAP_TYPE
 355                 printxval(mmap_flags, tcp->u_arg[4] & MAP_TYPE, "MAP_???");
 356                 addflags(mmap_flags, tcp->u_arg[4] & ~MAP_TYPE);
 357 #else
 358                 printflags(mmap_flags, tcp->u_arg[4], "MAP_???");
 359 #endif
 360         }
 361         return 0;
 362 }
 363
 364 #define MPOL_DEFAULT    0
 365 #define MPOL_PREFERRED  1
 366 #define MPOL_BIND       2
 367 #define MPOL_INTERLEAVE 3
 368
 369 #define MPOL_F_NODE     (1<<0)
 370 #define MPOL_F_ADDR     (1<<1)
 371
 372 #define MPOL_MF_STRICT  (1<<0)
 373 #define MPOL_MF_MOVE    (1<<1)
 374 #define MPOL_MF_MOVE_ALL (1<<2)
 375
 376 #include "xlat/policies.h"
 377
 378 #include "xlat/mbindflags.h"
 379
 380 #include "xlat/mempolicyflags.h"
 381
 382 #include "xlat/move_pages_flags.h"
 383
 384 static void
 385 get_nodes(struct tcb *tcp, unsigned long ptr, unsigned long maxnodes, int err)
 386 {
 387         unsigned long nlongs, size, end;
 388
 389         nlongs = (maxnodes + 8 * sizeof(long) - 1) / (8 * sizeof(long));
 390         size = nlongs * sizeof(long);
 391         end = ptr + size;
 392         if (nlongs == 0 || ((err || verbose(tcp)) && (size * 8 == maxnodes)
 393                             && (end > ptr))) {
 394                 unsigned long n, cur, abbrev_end;
 395                 int failed = 0;
 396
 397                 if (abbrev(tcp)) {
 398                         abbrev_end = ptr + max_strlen * sizeof(long);
 399                         if (abbrev_end < ptr)
 400                                 abbrev_end = end;
 401                 } else {
 402                         abbrev_end = end;
 403                 }
 404                 tprints(", {");
 405                 for (cur = ptr; cur < end; cur += sizeof(long)) {
 406                         if (cur > ptr)
 407                                 tprints(", ");
 408                         if (cur >= abbrev_end) {
 409                                 tprints("...");
 410                                 break;
 411                         }
 412                         if (umoven(tcp, cur, sizeof(n), (char *) &n) < 0) {
 413                                 tprints("?");
 414                                 failed = 1;
 415                                 break;
 416                         }
 417                         tprintf("%#0*lx", (int) sizeof(long) * 2 + 2, n);
 418                 }
 419                 tprints("}");
 420                 if (failed)
 421                         tprintf(" %#lx", ptr);
 422         } else
 423                 tprintf(", %#lx", ptr);
 424         tprintf(", %lu", maxnodes);
 425 }
 426
 427 int
 428 sys_mbind(struct tcb *tcp)
 429 {
 430         if (entering(tcp)) {
 431                 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
 432                 printxval(policies, tcp->u_arg[2], "MPOL_???");
 433                 get_nodes(tcp, tcp->u_arg[3], tcp->u_arg[4], 0);
 434                 tprints(", ");
 435                 printflags(mbindflags, tcp->u_arg[5], "MPOL_???");
 436         }
 437         return 0;
 438 }
 439
 440 int
 441 sys_set_mempolicy(struct tcb *tcp)
 442 {
 443         if (entering(tcp)) {
 444                 printxval(policies, tcp->u_arg[0], "MPOL_???");
 445                 get_nodes(tcp, tcp->u_arg[1], tcp->u_arg[2], 0);
 446         }
 447         return 0;
 448 }
 449
 450 int
 451 sys_get_mempolicy(struct tcb *tcp)
 452 {
 453         if (exiting(tcp)) {
 454                 int pol;
 455                 if (tcp->u_arg[0] == 0)
 456                         tprints("NULL");
 457                 else if (syserror(tcp) || umove(tcp, tcp->u_arg[0], &pol) < 0)
 458                         tprintf("%#lx", tcp->u_arg[0]);
 459                 else
 460                         printxval(policies, pol, "MPOL_???");
 461                 get_nodes(tcp, tcp->u_arg[1], tcp->u_arg[2], syserror(tcp));
 462                 tprintf(", %#lx, ", tcp->u_arg[3]);
 463                 printflags(mempolicyflags, tcp->u_arg[4], "MPOL_???");
 464         }
 465         return 0;
 466 }
 467
 468 int
 469 sys_migrate_pages(struct tcb *tcp)
 470 {
 471         if (entering(tcp)) {
 472                 tprintf("%ld, ", (long) (pid_t) tcp->u_arg[0]);
 473                 get_nodes(tcp, tcp->u_arg[2], tcp->u_arg[1], 0);
 474                 tprints(", ");
 475                 get_nodes(tcp, tcp->u_arg[3], tcp->u_arg[1], 0);
 476         }
 477         return 0;
 478 }
 479
 480 int
 481 sys_move_pages(struct tcb *tcp)
 482 {
 483         if (entering(tcp)) {
 484                 unsigned long npages = tcp->u_arg[1];
 485                 tprintf("%ld, %lu, ", tcp->u_arg[0], npages);
 486                 if (tcp->u_arg[2] == 0)
 487                         tprints("NULL, ");
 488                 else {
 489                         int i;
 490                         long puser = tcp->u_arg[2];
 491                         tprints("{");
 492                         for (i = 0; i < npages; ++i) {
 493                                 void *p;
 494                                 if (i > 0)
 495                                         tprints(", ");
 496                                 if (umove(tcp, puser, &p) < 0) {
 497                                         tprints("???");
 498                                         break;
 499                                 }
 500                                 tprintf("%p", p);
 501                                 puser += sizeof(void *);
 502                         }
 503                         tprints("}, ");
 504                 }
 505                 if (tcp->u_arg[3] == 0)
 506                         tprints("NULL, ");
 507                 else {
 508                         int i;
 509                         long nodeuser = tcp->u_arg[3];
 510                         tprints("{");
 511                         for (i = 0; i < npages; ++i) {
 512                                 int node;
 513                                 if (i > 0)
 514                                         tprints(", ");
 515                                 if (umove(tcp, nodeuser, &node) < 0) {
 516                                         tprints("???");
 517                                         break;
 518                                 }
 519                                 tprintf("%#x", node);
 520                                 nodeuser += sizeof(int);
 521                         }
 522                         tprints("}, ");
 523                 }
 524         }
 525         if (exiting(tcp)) {
 526                 unsigned long npages = tcp->u_arg[1];
 527                 if (tcp->u_arg[4] == 0)
 528                         tprints("NULL, ");
 529                 else {
 530                         int i;
 531                         long statususer = tcp->u_arg[4];
 532                         tprints("{");
 533                         for (i = 0; i < npages; ++i) {
 534                                 int status;
 535                                 if (i > 0)
 536                                         tprints(", ");
 537                                 if (umove(tcp, statususer, &status) < 0) {
 538                                         tprints("???");
 539                                         break;
 540                                 }
 541                                 tprintf("%#x", status);
 542                                 statususer += sizeof(int);
 543                         }
 544                         tprints("}, ");
 545                 }
 546                 printflags(move_pages_flags, tcp->u_arg[5], "MPOL_???");
 547         }
 548         return 0;
 549 }
 550
 551 #if defined(POWERPC)
 552 int
 553 sys_subpage_prot(struct tcb *tcp)
 554 {
 555         if (entering(tcp)) {
 556                 unsigned long cur, end, abbrev_end, entries;
 557                 unsigned int entry;
 558
 559                 tprintf("%#lx, %#lx, ", tcp->u_arg[0], tcp->u_arg[1]);
 560                 entries = tcp->u_arg[1] >> 16;
 561                 if (!entries || !tcp->u_arg[2]) {
 562                         tprints("{}");
 563                         return 0;
 564                 }
 565                 cur = tcp->u_arg[2];
 566                 end = cur + (sizeof(int) * entries);
 567                 if (!verbose(tcp) || end < tcp->u_arg[2]) {
 568                         tprintf("%#lx", tcp->u_arg[2]);
 569                         return 0;
 570                 }
 571                 if (abbrev(tcp)) {
 572                         abbrev_end = cur + (sizeof(int) * max_strlen);
 573                         if (abbrev_end > end)
 574                                 abbrev_end = end;
 575                 }
 576                 else
 577                         abbrev_end = end;
 578                 tprints("{");
 579                 for (; cur < end; cur += sizeof(int)) {
 580                         if (cur > tcp->u_arg[2])
 581                                 tprints(", ");
 582                         if (cur >= abbrev_end) {
 583                                 tprints("...");
 584                                 break;
 585                         }
 586                         if (umove(tcp, cur, &entry) < 0) {
 587                                 tprintf("??? [%#lx]", cur);
 588                                 break;
 589                         }
 590                         else
 591                                 tprintf("%#08x", entry);
 592                 }
 593                 tprints("}");
 594         }
 595
 596         return 0;
 597 }
 598 #endif