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 #if defined(LINUX)
  35
  36 #include <fcntl.h>
  37 #include <sys/stat.h>
  38 #include <sys/time.h>
  39 #include <sys/wait.h>
  40 #include <sys/resource.h>
  41 #include <sys/utsname.h>
  42 #include <sys/user.h>
  43 #include <sys/syscall.h>
  44 #include <signal.h>
  45 #include <linux/linkage.h>
  46
  47 /* Bits of module.flags.  */
  48
  49 #define MOD_UNINITIALIZED       0
  50 #define MOD_RUNNING             1
  51 #define MOD_DELETED             2
  52 #define MOD_AUTOCLEAN           4
  53 #define MOD_VISITED             8
  54 #define MOD_USED_ONCE           16
  55 #define MOD_JUST_FREED          32
  56 #define MOD_INITIALIZING        64
  57
  58 /* Values for query_module's which.  */
  59
  60 #define QM_MODULES      1
  61 #define QM_DEPS         2
  62 #define QM_REFS         3
  63 #define QM_SYMBOLS      4
  64 #define QM_INFO         5
  65
  66 struct module_symbol
  67 {
  68         unsigned long value;
  69         const char *name;
  70 };
  71
  72 struct module_info
  73 {
  74         unsigned long addr;
  75         unsigned long size;
  76         unsigned long flags;
  77         long usecount;
  78 };
  79
  80 static struct xlat which[] = {
  81         { 0,            "0"             },
  82         { QM_MODULES,   "QM_MODULES"    },
  83         { QM_DEPS,      "QM_DEPS"       },
  84         { QM_REFS,      "QM_REFS"       },
  85         { QM_SYMBOLS,   "QM_SYMBOLS"    },
  86         { QM_INFO,      "QM_INFO"       },
  87         { 0,            NULL            },
  88 };
  89
  90 static struct xlat modflags[] = {
  91         { MOD_UNINITIALIZED,    "MOD_UNINITIALIZED"     },
  92         { MOD_RUNNING,          "MOD_RUNNING"           },
  93         { MOD_DELETED,          "MOD_DELETED"           },
  94         { MOD_AUTOCLEAN,        "MOD_AUTOCLEAN"         },
  95         { MOD_VISITED,          "MOD_VISITED"           },
  96         { MOD_USED_ONCE,        "MOD_USED_ONCE"         },
  97         { MOD_JUST_FREED,       "MOD_JUST_FREED"        },
  98         { 0,                    NULL                    },
  99 };
 100
 101 int
 102 sys_query_module(tcp)
 103 struct tcb *tcp;
 104 {
 105
 106         if (exiting(tcp)) {
 107                 printstr(tcp, tcp->u_arg[0], -1);
 108                 tprintf(", ");
 109                 printxval(which, tcp->u_arg[1], "QM_???");
 110                 tprintf(", ");
 111                 if (!verbose(tcp)) {
 112                         tprintf("%#lx, %lu, %#lx", tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[4]);
 113                 } else if (tcp->u_rval!=0) {
 114                         size_t  ret;
 115                         umove(tcp, tcp->u_arg[4], &ret);
 116                         tprintf("%#lx, %lu, %Zu", tcp->u_arg[2], tcp->u_arg[3], ret);
 117                 } else if (tcp->u_arg[1]==QM_INFO) {
 118                         struct module_info      mi;
 119                         size_t                  ret;
 120                         umove(tcp, tcp->u_arg[2], &mi);
 121                         tprintf("{address=%#lx, size=%lu, flags=", mi.addr, mi.size);
 122                         printflags(modflags, mi.flags);
 123                         tprintf(", usecount=%lu}", mi.usecount);
 124                         umove(tcp, tcp->u_arg[4], &ret);
 125                         tprintf(", %Zu", ret);
 126                 } else if ((tcp->u_arg[1]==QM_MODULES) ||
 127                                 (tcp->u_arg[1]==QM_DEPS) ||
 128                                 (tcp->u_arg[1]==QM_REFS)) {
 129                         size_t  ret;
 130
 131                         umove(tcp, tcp->u_arg[4], &ret);
 132                         tprintf("{");
 133                         if (!abbrev(tcp)) {
 134                                 char*   data    = (char*)malloc(tcp->u_arg[3]);
 135                                 char*   mod     = data;
 136                                 size_t  idx;
 137
 138                                 if (data==NULL) {
 139                                         fprintf(stderr, "sys_query_module: No memory\n");
 140                                         tprintf(" /* %Zu entries */ ", ret);
 141                                 } else {
 142                                         umoven(tcp, tcp->u_arg[2], tcp->u_arg[3], data);
 143                                         for (idx=0; idx<ret; idx++) {
 144                                                 if (idx!=0)
 145                                                         tprintf(",");
 146                                                 tprintf(mod);
 147                                                 mod+=strlen(mod)+1;
 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                         size_t  ret;
 156                         umove(tcp, tcp->u_arg[4], &ret);
 157                         tprintf("{");
 158                         if (!abbrev(tcp)) {
 159                                 char*                   data    = (char *)malloc(tcp->u_arg[3]);
 160                                 struct module_symbol*   sym     = (struct module_symbol*)data;
 161                                 size_t                  idx;
 162
 163                                 if (data==NULL) {
 164                                         fprintf(stderr, "sys_query_module: No memory\n");
 165                                         tprintf(" /* %Zu entries */ ", ret);
 166                                 } else {
 167                                         umoven(tcp, tcp->u_arg[2], tcp->u_arg[3], data);
 168                                         for (idx=0; idx<ret; idx++) {
 169                                                 tprintf("{name=%s, value=%lu} ", data+(long)sym->name, sym->value);
 170                                                 sym++;
 171                                         }
 172                                         free(data);
 173                                 }
 174                         } else
 175                                 tprintf(" /* %Zu entries */ ", ret);
 176                         tprintf("}, %Zd", ret);
 177                 } else {
 178                         printstr(tcp, tcp->u_arg[2], tcp->u_arg[3]);
 179                         tprintf(", %#lx", tcp->u_arg[4]);
 180                 }
 181         }
 182         return 0;
 183 }
 184
 185 int
 186 sys_create_module(tcp)
 187 struct tcb *tcp;
 188 {
 189         if (entering(tcp)) {
 190                 printpath(tcp, tcp->u_arg[0]);
 191                 tprintf(", %lu", tcp->u_arg[1]);
 192         }
 193         return RVAL_HEX;
 194 }
 195
 196 int
 197 sys_init_module(tcp)
 198 struct tcb *tcp;
 199 {
 200         if (entering(tcp)) {
 201                 printpath(tcp, tcp->u_arg[0]);
 202                 tprintf(", %#lx", tcp->u_arg[1]);
 203         }
 204         return 0;
 205 }
 206 #endif /* LINUX */
 207