config/kernel-mod-param.m4

   1 dnl #
   2 dnl # Grsecurity kernel API change
   3 dnl # constified parameters of module_param_call() methods
   4 dnl #
   5 AC_DEFUN([ZFS_AC_KERNEL_SRC_MODULE_PARAM_CALL_CONST], [
   6         ZFS_LINUX_TEST_SRC([module_param_call], [
   7                 #include <linux/module.h>
   8                 #include <linux/moduleparam.h>
   9
  10                 int param_get(char *b, const struct kernel_param *kp)
  11                 {
  12                         return (0);
  13                 }
  14
  15                 int param_set(const char *b, const struct kernel_param *kp)
  16                 {
  17                         return (0);
  18                 }
  19
  20                 module_param_call(p, param_set, param_get, NULL, 0644);
  21         ],[])
  22 ])
  23
  24 AC_DEFUN([ZFS_AC_KERNEL_MODULE_PARAM_CALL_CONST], [
  25         AC_MSG_CHECKING([whether module_param_call() is hardened])
  26         ZFS_LINUX_TEST_RESULT([module_param_call], [
  27                 AC_MSG_RESULT(yes)
  28                 AC_DEFINE(MODULE_PARAM_CALL_CONST, 1,
  29                     [hardened module_param_call])
  30         ],[
  31                 AC_MSG_RESULT(no)
  32         ])
  33 ])