granicus.if.org Git - strace/blob - bjm.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  * 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 #include "defs.h"
  33
  34 #include <fcntl.h>
  35 #include <sys/stat.h>
  36 #include <sys/time.h>
  37 #include <sys/wait.h>
  38 #include <sys/resource.h>
  39 #include <sys/utsname.h>
  40 #include <sys/user.h>
  41 #include <sys/syscall.h>
  42 #include <signal.h>
  43
  44 /* Bits of module.flags.  */
  45
  46 #define MOD_UNINITIALIZED       0
  47 #define MOD_RUNNING             1
  48 #define MOD_DELETED             2
  49 #define MOD_AUTOCLEAN           4
  50 #define MOD_VISITED             8
  51 #define MOD_USED_ONCE           16
  52 #define MOD_JUST_FREED          32
  53 #define MOD_INITIALIZING        64
  54
  55 /* Values for query_module's which.  */
  56
  57 #define QM_MODULES      1
  58 #define QM_DEPS         2
  59 #define QM_REFS         3
  60 #define QM_SYMBOLS      4
  61 #define QM_INFO         5
  62
  63 struct module_symbol
  64 {
  65         unsigned long value;
  66         const char *name;
  67 };
  68
  69 struct module_info
  70 {
  71         unsigned long addr;
  72         unsigned long size;
  73         unsigned long flags;
  74         long usecount;
  75 };
  76
  77 static const struct xlat which[] = {
  78         { 0,            "0"             },
  79         { QM_MODULES,   "QM_MODULES"    },
  80         { QM_DEPS,      "QM_DEPS"       },
  81         { QM_REFS,      "QM_REFS"       },
  82         { QM_SYMBOLS,   "QM_SYMBOLS"    },
  83         { QM_INFO,      "QM_INFO"       },
  84         { 0,            NULL            },
  85 };
  86
  87 static const struct xlat modflags[] = {
  88         { MOD_UNINITIALIZED,    "MOD_UNINITIALIZED"     },
  89         { MOD_RUNNING,          "MOD_RUNNING"           },
  90         { MOD_DELETED,          "MOD_DELETED"           },
  91         { MOD_AUTOCLEAN,        "MOD_AUTOCLEAN"         },
  92         { MOD_VISITED,          "MOD_VISITED"           },
  93         { MOD_USED_ONCE,        "MOD_USED_ONCE"         },
  94         { MOD_JUST_FREED,       "MOD_JUST_FREED"        },
  95         { 0,                    NULL                    },
  96 };
  97
  98 int
  99 sys_query_module(struct tcb *tcp)
 100 {
 101         if (entering(tcp)) {
 102                 printstr(tcp, tcp->u_arg[0], -1);
 103                 tprints(", ");
 104                 printxval(which, tcp->u_arg[1], "QM_???");
 105                 tprints(", ");
 106         } else {
 107                 size_t ret;
 108
 109                 if (!verbose(tcp) || syserror(tcp) ||
 110                     umove(tcp, tcp->u_arg[4], &ret) < 0) {
 111                         tprintf("%#lx, %lu, %#lx", tcp->u_arg[2],
 112                                 tcp->u_arg[3], tcp->u_arg[4]);
 113                 } else if (tcp->u_arg[1]==QM_INFO) {
 114                         struct module_info      mi;
 115                         if (umove(tcp, tcp->u_arg[2], &mi) < 0) {
 116                                 tprintf("%#lx, ", tcp->u_arg[2]);
 117                         } else {
 118                                 tprintf("{address=%#lx, size=%lu, flags=",
 119                                         mi.addr, mi.size);
 120                                 printflags(modflags, mi.flags, "MOD_???");
 121                                 tprintf(", usecount=%lu}, ", mi.usecount);
 122                         }
 123                         tprintf("%Zu", ret);
 124                 } else if ((tcp->u_arg[1]==QM_MODULES) ||
 125                            (tcp->u_arg[1]==QM_DEPS) ||
 126                            (tcp->u_arg[1]==QM_REFS)) {
 127                         tprints("{");
 128                         if (!abbrev(tcp)) {
 129                                 char*   data    = malloc(tcp->u_arg[3]);
 130                                 char*   mod     = data;
 131                                 size_t  idx;
 132
 133                                 if (!data) {
 134                                         fprintf(stderr, "out of memory\n");
 135                                         tprintf(" /* %Zu entries */ ", ret);
 136                                 } else {
 137                                         if (umoven(tcp, tcp->u_arg[2],
 138                                                 tcp->u_arg[3], data) < 0) {
 139                                                 tprintf(" /* %Zu entries */ ", ret);
 140                                         } else {
 141                                                 for (idx = 0; idx < ret; idx++) {
 142                                                         tprintf("%s%s",
 143                                                                 (idx ? ", " : ""),
 144                                                                 mod);
 145                                                         mod += strlen(mod)+1;
 146                                                 }
 147                                         }
 148                                         free(data);
 149                                 }
 150                         } else
 151                                 tprintf(" /* %Zu entries */ ", ret);
 152                         tprintf("}, %Zu", ret);
 153                 } else if (tcp->u_arg[1]==QM_SYMBOLS) {
 154                         tprints("{");
 155                         if (!abbrev(tcp)) {
 156                                 char*                   data    = malloc(tcp->u_arg[3]);
 157                                 struct module_symbol*   sym     = (struct module_symbol*)data;
 158                                 size_t                  idx;
 159
 160                                 if (!data) {
 161                                         fprintf(stderr, "out of memory\n");
 162                                         tprintf(" /* %Zu entries */ ", ret);
 163                                 } else {
 164                                         if (umoven(tcp, tcp->u_arg[2],
 165                                                 tcp->u_arg[3], data) < 0) {
 166                                                 tprintf(" /* %Zu entries */ ", ret);
 167                                         } else {
 168                                                 for (idx = 0; idx < ret; idx++) {
 169                                                         tprintf("%s{name=%s, value=%lu}",
 170                                                                 (idx ? " " : ""),
 171                                                                 data+(long)sym->name,
 172                                                                 sym->value);
 173                                                         sym++;
 174                                                 }
 175                                         }
 176                                         free(data);
 177                                 }
 178                         } else
 179                                 tprintf(" /* %Zu entries */ ", ret);
 180                         tprintf("}, %Zd", ret);
 181                 } else {
 182                         printstr(tcp, tcp->u_arg[2], tcp->u_arg[3]);
 183                         tprintf(", %#lx", tcp->u_arg[4]);
 184                 }
 185         }
 186         return 0;
 187 }
 188
 189 int
 190 sys_create_module(struct tcb *tcp)
 191 {
 192         if (entering(tcp)) {
 193                 printpath(tcp, tcp->u_arg[0]);
 194                 tprintf(", %lu", tcp->u_arg[1]);
 195         }
 196         return RVAL_HEX;
 197 }
 198
 199 int
 200 sys_init_module(struct tcb *tcp)
 201 {
 202         if (entering(tcp)) {
 203                 tprintf("%#lx, ", tcp->u_arg[0]);
 204                 tprintf("%lu, ", tcp->u_arg[1]);
 205                 printstr(tcp, tcp->u_arg[2], -1);
 206         }
 207         return 0;
 208 }