kernel/module/kdb.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Module kdb support
   4  *
   5  * Copyright (C) 2010 Jason Wessel
   6  */
   7
   8 #include <linux/module.h>
   9 #include <linux/kdb.h>
  10 #include "internal.h"
  11
  12 /*
  13  * kdb_lsmod - This function implements the 'lsmod' command.  Lists
  14  *      currently loaded kernel modules.
  15  *      Mostly taken from userland lsmod.
  16  */
  17 int kdb_lsmod(int argc, const char **argv)
  18 {
  19         struct module *mod;
  20
  21         if (argc != 0)
  22                 return KDB_ARGCOUNT;
  23
  24         kdb_printf("Module                  Size  modstruct     Used by\n");
  25         list_for_each_entry(mod, &modules, list) {
  26                 if (mod->state == MODULE_STATE_UNFORMED)
  27                         continue;
  28
  29                 kdb_printf("%-20s%8u", mod->name, mod->mem[MOD_TEXT].size);
  30                 kdb_printf("/%8u", mod->mem[MOD_RODATA].size);
  31                 kdb_printf("/%8u", mod->mem[MOD_RO_AFTER_INIT].size);
  32                 kdb_printf("/%8u", mod->mem[MOD_DATA].size);
  33
  34                 kdb_printf("  0x%px ", (void *)mod);
  35 #ifdef CONFIG_MODULE_UNLOAD
  36                 kdb_printf("%4d ", module_refcount(mod));
  37 #endif
  38                 if (mod->state == MODULE_STATE_GOING)
  39                         kdb_printf(" (Unloading)");
  40                 else if (mod->state == MODULE_STATE_COMING)
  41                         kdb_printf(" (Loading)");
  42                 else
  43                         kdb_printf(" (Live)");
  44                 kdb_printf(" 0x%px", mod->mem[MOD_TEXT].base);
  45                 kdb_printf("/0x%px", mod->mem[MOD_RODATA].base);
  46                 kdb_printf("/0x%px", mod->mem[MOD_RO_AFTER_INIT].base);
  47                 kdb_printf("/0x%px", mod->mem[MOD_DATA].base);
  48
  49 #ifdef CONFIG_MODULE_UNLOAD
  50                 {
  51                         struct module_use *use;
  52
  53                         kdb_printf(" [ ");
  54                         list_for_each_entry(use, &mod->source_list,
  55                                             source_list)
  56                                 kdb_printf("%s ", use->target->name);
  57                         kdb_printf("]\n");
  58                 }
  59 #endif
  60         }
  61
  62         return 0;
  63 }