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