granicus.if.org Git - strace/blob - mem.c

   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  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. The name of the author may not be used to endorse or promote products
  16  *    derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  *
  29  *      $Id$
  30  */
  31
  32 #include "defs.h"
  33
  34 #ifdef LINUXSPARC
  35 #include <linux/mman.h>
  36 #else
  37 #include <sys/mman.h>
  38 #endif
  39
  40 #if defined(LINUX) && defined(__i386__)
  41 #include <linux/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 #ifdef _MAP_NEW
  90         { _MAP_NEW,     "_MAP_NEW"      },
  91 #endif
  92 #ifdef MAP_GROWSDOWN
  93         { MAP_GROWSDOWN,"MAP_GROWSDOWN" },
  94 #endif
  95 #ifdef MAP_DENYWRITE
  96         { MAP_DENYWRITE,"MAP_DENYWRITE" },
  97 #endif
  98 #ifdef MAP_EXECUTABLE
  99         { MAP_EXECUTABLE,"MAP_EXECUTABLE"},
 100 #endif
 101 #ifdef MAP_FILE
 102         { MAP_FILE,"MAP_FILE"},
 103 #endif
 104 #ifdef MAP_LOCKED
 105         { MAP_LOCKED,"MAP_LOCKED"},
 106 #endif
 107         { 0,            NULL            },
 108 };
 109
 110 int
 111 sys_mmap(tcp)
 112 struct tcb *tcp;
 113 {
 114 #ifdef LINUX
 115 #  if defined(ALPHA) || defined(sparc)
 116         long *u_arg = tcp->u_arg;
 117 #  else /* !ALPHA */
 118         long u_arg[6];
 119 #  endif /* !ALPHA */
 120 #else /* !LINUX */
 121         long *u_arg = tcp->u_arg;
 122 #endif /* !LINUX */
 123
 124         if (entering(tcp)) {
 125 #if defined(LINUX) && !defined(ALPHA) && !defined(__sparc__)
 126                 if (umoven(tcp, tcp->u_arg[0], sizeof u_arg,
 127                                 (char *) u_arg) == -1)
 128                         return 0;
 129 #endif /* LINUX && !ALPHA && !sparc */
 130
 131                 /* addr */
 132                 tprintf("%#lx, ", u_arg[0]);
 133                 /* len */
 134                 tprintf("%lu, ", u_arg[1]);
 135                 /* prot */
 136                 printflags(mmap_prot, u_arg[2]);
 137                 tprintf(", ");
 138                 /* flags */
 139                 printxval(mmap_flags, u_arg[3] & MAP_TYPE, "MAP_???");
 140                 addflags(mmap_flags, u_arg[3] & ~MAP_TYPE);
 141                 /* fd */
 142                 tprintf(", %ld, ", u_arg[4]);
 143                 /* offset */
 144                 tprintf("%#lx", u_arg[5]);
 145         }
 146         return RVAL_HEX;
 147 }
 148
 149 int
 150 sys_munmap(tcp)
 151 struct tcb *tcp;
 152 {
 153         if (entering(tcp)) {
 154                 tprintf("%#lx, %lu",
 155                         tcp->u_arg[0], tcp->u_arg[1]);
 156         }
 157         return 0;
 158 }
 159
 160 int
 161 sys_mprotect(tcp)
 162 struct tcb *tcp;
 163 {
 164         if (entering(tcp)) {
 165                 tprintf("%#lx, %lu, ",
 166                         tcp->u_arg[0], tcp->u_arg[1]);
 167                 if (!printflags(mmap_prot, tcp->u_arg[2]))
 168                         tprintf("PROT_???");
 169         }
 170         return 0;
 171 }
 172
 173 #ifdef MS_ASYNC
 174
 175 static struct xlat mctl_sync[] = {
 176         { MS_ASYNC,     "MS_ASYNC"      },
 177         { MS_INVALIDATE,"MS_INVALIDATE" },
 178 #ifdef MS_SYNC
 179         { MS_SYNC,      "MS_SYNC"       },
 180 #endif
 181         { 0,            NULL            },
 182 };
 183
 184 int
 185 sys_msync(tcp)
 186 struct tcb *tcp;
 187 {
 188         if (entering(tcp)) {
 189                 /* addr */
 190                 tprintf("%#lx", tcp->u_arg[0]);
 191                 /* len */
 192                 tprintf(", %lu, ", tcp->u_arg[1]);
 193                 /* flags */
 194                 if (!printflags(mctl_sync, tcp->u_arg[2]))
 195                         tprintf("MS_???");
 196         }
 197         return 0;
 198 }
 199
 200 #endif /* MS_ASYNC */
 201
 202 #ifdef MC_SYNC
 203
 204 static struct xlat mctl_funcs[] = {
 205         { MC_LOCK,      "MC_LOCK"       },
 206         { MC_LOCKAS,    "MC_LOCKAS"     },
 207         { MC_SYNC,      "MC_SYNC"       },
 208         { MC_UNLOCK,    "MC_UNLOCK"     },
 209         { MC_UNLOCKAS,  "MC_UNLOCKAS"   },
 210         { 0,            NULL            },
 211 };
 212
 213 static struct xlat mctl_lockas[] = {
 214         { MCL_CURRENT,  "MCL_CURRENT"   },
 215         { MCL_FUTURE,   "MCL_FUTURE"    },
 216         { 0,            NULL            },
 217 };
 218
 219 int
 220 sys_mctl(tcp)
 221 struct tcb *tcp;
 222 {
 223         int arg, function;
 224
 225         if (entering(tcp)) {
 226                 /* addr */
 227                 tprintf("%#lx", tcp->u_arg[0]);
 228                 /* len */
 229                 tprintf(", %lu, ", tcp->u_arg[1]);
 230                 /* function */
 231                 function = tcp->u_arg[2];
 232                 if (!printflags(mctl_funcs, function))
 233                         tprintf("MC_???");
 234                 /* arg */
 235                 arg = tcp->u_arg[3];
 236                 tprintf(", ");
 237                 switch (function) {
 238                 case MC_SYNC:
 239                         if (!printflags(mctl_sync, arg))
 240                                 tprintf("MS_???");
 241                         break;
 242                 case MC_LOCKAS:
 243                         if (!printflags(mctl_lockas, arg))
 244                                 tprintf("MCL_???");
 245                         break;
 246                 default:
 247                         tprintf("%#x", arg);
 248                         break;
 249                 }
 250         }
 251         return 0;
 252 }
 253
 254 #endif /* MC_SYNC */
 255
 256 int
 257 sys_mincore(tcp)
 258 struct tcb *tcp;
 259 {
 260         int i, len;
 261         char *vec = NULL;
 262
 263         if (entering(tcp)) {
 264                 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
 265         } else {
 266                 len = tcp->u_arg[1];
 267                 if (syserror(tcp) || tcp->u_arg[2] == 0 ||
 268                         (vec = malloc((u_int)len)) == NULL ||
 269                         umoven(tcp, tcp->u_arg[2], len, vec) < 0)
 270                         tprintf("%#lx", tcp->u_arg[2]);
 271                 else {
 272                         tprintf("[");
 273                         for (i = 0; i < len; i++) {
 274                                 if (abbrev(tcp) && i >= max_strlen) {
 275                                         tprintf("...");
 276                                         break;
 277                                 }
 278                                 tprintf((vec[i] & 1) ? "1" : "0");
 279                         }
 280                         tprintf("]");
 281                 }
 282                 if (vec)
 283                         free(vec);
 284         }
 285         return 0;
 286 }
 287
 288 int
 289 sys_getpagesize(tcp)
 290 struct tcb *tcp;
 291 {
 292         if (exiting(tcp))
 293                 return RVAL_HEX;
 294         return 0;
 295 }
 296
 297 #if defined(LINUX) && defined(__i386__)
 298 int
 299 sys_modify_ldt(tcp)
 300 struct tcb *tcp;
 301 {
 302         if (entering(tcp)) {
 303                 struct modify_ldt_ldt_s copy;
 304                 tprintf("%ld", tcp->u_arg[0]);
 305                 if (tcp->u_arg[1] == 0
 306                                 || tcp->u_arg[2] != sizeof (struct modify_ldt_ldt_s)
 307                                 || umove(tcp, tcp->u_arg[1], &copy) == -1)
 308                         tprintf(", %lx", tcp->u_arg[1]);
 309                 else {
 310                         tprintf(", {entry_number:%d, ", copy.entry_number);
 311                         if (!verbose(tcp))
 312                                 tprintf("...}");
 313                         else {
 314                                 tprintf("base_addr:%#08lx, "
 315                                                 "limit:%d, "
 316                                                 "seg_32bit:%d, "
 317                                                 "contents:%d, "
 318                                                 "read_exec_only:%d, "
 319                                                 "limit_in_pages:%d, "
 320                                                 "seg_not_present:%d, "
 321                                                 "useable:%d}",
 322                                                 copy.base_addr,
 323                                                 copy.limit,
 324                                                 copy.seg_32bit,
 325                                                 copy.contents,
 326                                                 copy.read_exec_only,
 327                                                 copy.limit_in_pages,
 328                                                 copy.seg_not_present,
 329                                                 copy.useable);
 330                         }
 331                 }
 332                 tprintf(", %lu", tcp->u_arg[2]);
 333         }
 334         return 0;
 335 }
 336 #endif /* LINUX && __i386__ */
 337