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 extern const char ksplice_source_diff[], ksplice_source_diff_end[];
  38 #ifdef KSPLICE_NEED_PARAINSTRUCTIONS
  39 extern struct paravirt_patch_site parainstructions[], parainstructions_end[];
  40 #endif
  41
  42 LIST_HEAD(reloc_addrmaps);
  43 LIST_HEAD(reloc_namevals);
  44 LIST_HEAD(safety_records);
  45
  46 static int debug;
  47 module_param(debug, int, 0600);
  48
  49 #define pack KSPLICE_UNIQ(pack)
  50 struct module_pack pack = {
  51         .name = "ksplice_" STR(KSPLICE_ID),
  52 #ifdef KSPLICE_TARGET
  53         .target_name = STR(KSPLICE_TARGET),
  54 #else
  55         .target_name = NULL,
  56 #endif
  57         .target = NULL,
  58         .map_printk = MAP_PRINTK,
  59         .primary = THIS_MODULE,
  60         .primary_relocs = ksplice_relocs,
  61         .primary_relocs_end = ksplice_relocs_end,
  62         .primary_sizes = ksplice_sizes,
  63         .primary_sizes_end = ksplice_sizes_end,
  64         .patches = ksplice_patches,
  65         .patches_end = ksplice_patches_end,
  66         .source_diff = ksplice_source_diff,
  67         .source_diff_end = ksplice_source_diff_end,
  68 #ifdef KSPLICE_NEED_PARAINSTRUCTIONS
  69         .primary_parainstructions = parainstructions,
  70         .primary_parainstructions_end = parainstructions_end,
  71 #endif
  72         .reloc_addrmaps = &reloc_addrmaps,
  73         .reloc_namevals = &reloc_namevals,
  74         .safety_records = &safety_records,
  75 };
  76 EXPORT_SYMBOL_GPL(pack);
  77
  78 static int init_primary(void)
  79 {
  80         pack.debug = &debug;
  81         return 0;
  82 }
  83
  84 static void cleanup_primary(void)
  85 {
  86         cleanup_ksplice_module(&pack);
  87 }
  88
  89 #define helper_init_module KSPLICE_UNIQ(helper_init_module)
  90 int helper_init_module(void)
  91 {
  92         return init_ksplice_module(&pack);
  93 }
  94 EXPORT_SYMBOL_GPL(helper_init_module);
  95
  96 module_init(init_primary);
  97 module_exit(cleanup_primary);