kmodsrc/primary.c

   1 /*  Copyright (C) 2008  Jeffrey Brian Arnold <jbarnold@mit.edu>
   2  *
   3  *  This program is free software; you can redistribute it and/or modify
   4  *  it under the terms of the GNU General Public License, version 2.
   5  *
   6  *  This program is distributed in the hope that it will be useful,
   7  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9  *  GNU General Public License for more details.
  10  *
  11  *  You should have received a copy of the GNU General Public License
  12  *  along with this program; if not, write to the Free Software
  13  *  Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
  14  *  02110-1301, USA.
  15  */
  16
  17 #ifdef KSPLICE_STANDALONE
  18 #include "ksplice.h"
  19 #else
  20 #include <linux/ksplice.h>
  21 #endif
  22
  23 MODULE_LICENSE("GPL v2");
  24
  25 #undef _STR
  26 #define _STR(x) #x
  27 #undef STR
  28 #define STR(x) _STR(x)
  29
  30 #define _PASTE(x, y) x##y
  31 #define PASTE(x, y) _PASTE(x, y)
  32 #define KSPLICE_UNIQ(s) PASTE(s##_, KSPLICE_ID)
  33
  34 extern const struct ksplice_reloc ksplice_relocs[], ksplice_relocs_end[];
  35 extern const struct ksplice_size ksplice_sizes[], ksplice_sizes_end[];
  36 extern struct ksplice_patch ksplice_patches[], ksplice_patches_end[];
  37 #ifdef KSPLICE_NEED_PARAINSTRUCTIONS
  38 extern struct paravirt_patch_site parainstructions[], parainstructions_end[];
  39 #endif
  40
  41 LIST_HEAD(reloc_addrmaps);
  42 LIST_HEAD(reloc_namevals);
  43 LIST_HEAD(safety_records);
  44
  45 static int debug;
  46 module_param(debug, int, 0600);
  47
  48 #define pack KSPLICE_UNIQ(pack)
  49 struct module_pack pack = {
  50         .name = "ksplice_" STR(KSPLICE_ID),
  51 #ifdef KSPLICE_TARGET
  52         .target = STR(KSPLICE_TARGET),
  53 #else
  54         .target = NULL,
  55 #endif
  56         .map_printk = MAP_PRINTK,
  57         .primary = THIS_MODULE,
  58         .primary_relocs = ksplice_relocs,
  59         .primary_relocs_end = ksplice_relocs_end,
  60         .primary_sizes = ksplice_sizes,
  61         .primary_sizes_end = ksplice_sizes_end,
  62         .patches = ksplice_patches,
  63         .patches_end = ksplice_patches_end,
  64 #ifdef KSPLICE_NEED_PARAINSTRUCTIONS
  65         .primary_parainstructions = parainstructions,
  66         .primary_parainstructions_end = parainstructions_end,
  67 #endif
  68         .reloc_addrmaps = &reloc_addrmaps,
  69         .reloc_namevals = &reloc_namevals,
  70         .safety_records = &safety_records,
  71 };
  72 EXPORT_SYMBOL_GPL(pack);
  73
  74 static int init_primary(void)
  75 {
  76         pack.debug = debug;
  77         return 0;
  78 }
  79
  80 static void cleanup_primary(void)
  81 {
  82         cleanup_ksplice_module(&pack);
  83 }
  84
  85 #define helper_init_module KSPLICE_UNIQ(helper_init_module)
  86 int helper_init_module(void)
  87 {
  88         return init_ksplice_module(&pack);
  89 }
  90 EXPORT_SYMBOL_GPL(helper_init_module);
  91
  92 module_init(init_primary);
  93 module_exit(cleanup_primary);