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
  35 #include <fcntl.h>
  36 #include <sys/stat.h>
  37 #include <sys/time.h>
  38 #include <sys/wait.h>
  39 #include <sys/resource.h>
  40 #include <sys/utsname.h>
  41 #include <sys/user.h>
  42 #include <sys/syscall.h>
  43 #include <signal.h>
  44
  45 /* Bits of module.flags.  */
  46
  47 #define MOD_UNINITIALIZED       0
  48 #define MOD_RUNNING             1
  49 #define MOD_DELETED             2
  50 #define MOD_AUTOCLEAN           4
  51 #define MOD_VISITED             8
  52 #define MOD_USED_ONCE           16
  53 #define MOD_JUST_FREED          32
  54 #define MOD_INITIALIZING        64
  55
  56 /* Values for query_module's which.  */
  57
  58 #define QM_MODULES      1
  59 #define QM_DEPS         2
  60 #define QM_REFS         3
  61 #define QM_SYMBOLS      4
  62 #define QM_INFO         5
  63
  64 struct module_symbol
  65 {
  66         unsigned long value;
  67         const char *name;
  68 };
  69
  70 struct module_info
  71 {
  72         unsigned long addr;
  73         unsigned long size;
  74         unsigned long flags;
  75         long usecount;
  76 };
  77
  78 static const struct xlat which[] = {
  79         { 0,            "0"             },
  80         { QM_MODULES,   "QM_MODULES"    },
  81         { QM_DEPS,      "QM_DEPS"       },
  82         { QM_REFS,      "QM_REFS"       },
  83         { QM_SYMBOLS,   "QM_SYMBOLS"    },
  84         { QM_INFO,      "QM_INFO"       },
  85         { 0,            NULL            },
  86 };
  87
  88 static const struct xlat modflags[] = {
  89         { MOD_UNINITIALIZED,    "MOD_UNINITIALIZED"     },
  90         { MOD_RUNNING,          "MOD_RUNNING"           },
  91         { MOD_DELETED,          "MOD_DELETED"           },
  92         { MOD_AUTOCLEAN,        "MOD_AUTOCLEAN"         },
  93         { MOD_VISITED,          "MOD_VISITED"           },
  94         { MOD_USED_ONCE,        "MOD_USED_ONCE"         },
  95         { MOD_JUST_FREED,       "MOD_JUST_FREED"        },
  96         { 0,                    NULL                    },
  97 };
  98
  99 int
 100 sys_query_module(struct tcb *tcp)
 101 {
 102         if (entering(tcp)) {
 103                 printstr(tcp, tcp->u_arg[0], -1);
 104                 tprints(", ");
 105                 printxval(which, tcp->u_arg[1], "QM_???");
 106                 tprints(", ");
 107         } else {
 108                 size_t ret;
 109
 110                 if (!verbose(tcp) || syserror(tcp) ||
 111                     umove(tcp, tcp->u_arg[4], &ret) < 0) {
 112                         tprintf("%#lx, %lu, %#lx", tcp->u_arg[2],
 113                                 tcp->u_arg[3], tcp->u_arg[4]);
 114                 } else if (tcp->u_arg[1]==QM_INFO) {
 115                         struct module_info      mi;
 116                         if (umove(tcp, tcp->u_arg[2], &mi) < 0) {
 117                                 tprintf("%#lx, ", tcp->u_arg[2]);
 118                         } else {
 119                                 tprintf("{address=%#lx, size=%lu, flags=",
 120                                         mi.addr, mi.size);
 121                                 printflags(modflags, mi.flags, "MOD_???");
 122                                 tprintf(", usecount=%lu}, ", mi.usecount);
 123                         }
 124                         tprintf("%Zu", ret);
 125                 } else if ((tcp->u_arg[1]==QM_MODULES) ||
 126                            (tcp->u_arg[1]==QM_DEPS) ||
 127                            (tcp->u_arg[1]==QM_REFS)) {
 128                         tprints("{");
 129                         if (!abbrev(tcp)) {
 130                                 char*   data    = malloc(tcp->u_arg[3]);
 131                                 char*   mod     = data;
 132                                 size_t  idx;
 133
 134                                 if (!data) {
 135                                         fprintf(stderr, "out of memory\n");
 136                                         tprintf(" /* %Zu entries */ ", ret);
 137                                 } else {
 138                                         if (umoven(tcp, tcp->u_arg[2],
 139                                                 tcp->u_arg[3], data) < 0) {
 140                                                 tprintf(" /* %Zu entries */ ", ret);
 141                                         } else {
 142                                                 for (idx = 0; idx < ret; idx++) {
 143                                                         tprintf("%s%s",
 144                                                                 (idx ? ", " : ""),
 145                                                                 mod);
 146                                                         mod += strlen(mod)+1;
 147                                                 }
 148                                         }
 149                                         free(data);
 150                                 }
 151                         } else
 152                                 tprintf(" /* %Zu entries */ ", ret);
 153                         tprintf("}, %Zu", ret);
 154                 } else if (tcp->u_arg[1]==QM_SYMBOLS) {
 155                         tprints("{");
 156                         if (!abbrev(tcp)) {
 157                                 char*                   data    = malloc(tcp->u_arg[3]);
 158                                 struct module_symbol*   sym     = (struct module_symbol*)data;
 159                                 size_t                  idx;
 160
 161                                 if (!data) {
 162                                         fprintf(stderr, "out of memory\n");
 163                                         tprintf(" /* %Zu entries */ ", ret);
 164                                 } else {
 165                                         if (umoven(tcp, tcp->u_arg[2],
 166                                                 tcp->u_arg[3], data) < 0) {
 167                                                 tprintf(" /* %Zu entries */ ", ret);
 168                                         } else {
 169                                                 for (idx = 0; idx < ret; idx++) {
 170                                                         tprintf("%s{name=%s, value=%lu}",
 171                                                                 (idx ? " " : ""),
 172                                                                 data+(long)sym->name,
 173                                                                 sym->value);
 174                                                         sym++;
 175                                                 }
 176                                         }
 177                                         free(data);
 178                                 }
 179                         } else
 180                                 tprintf(" /* %Zu entries */ ", ret);
 181                         tprintf("}, %Zd", ret);
 182                 } else {
 183                         printstr(tcp, tcp->u_arg[2], tcp->u_arg[3]);
 184                         tprintf(", %#lx", tcp->u_arg[4]);
 185                 }
 186         }
 187         return 0;
 188 }
 189
 190 int
 191 sys_create_module(struct tcb *tcp)
 192 {
 193         if (entering(tcp)) {
 194                 printpath(tcp, tcp->u_arg[0]);
 195                 tprintf(", %lu", tcp->u_arg[1]);
 196         }
 197         return RVAL_HEX;
 198 }
 199
 200 int
 201 sys_init_module(struct tcb *tcp)
 202 {
 203         if (entering(tcp)) {
 204                 tprintf("%#lx, ", tcp->u_arg[0]);
 205                 tprintf("%lu, ", tcp->u_arg[1]);
 206                 printstr(tcp, tcp->u_arg[2], -1);
 207         }
 208         return 0;
 209 }