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_MODULE_PARAM_CALL_CONST], [
   6         AC_MSG_CHECKING([whether module_param_call() is hardened])
   7         ZFS_LINUX_TRY_COMPILE([
   8                 #include <linux/module.h>
   9                 #include <linux/moduleparam.h>
  10
  11                 int param_get(char *b, const struct kernel_param *kp)
  12                 {
  13                         return (0);
  14                 }
  15
  16                 int param_set(const char *b, const struct kernel_param *kp)
  17                 {
  18                         return (0);
  19                 }
  20
  21                 module_param_call(p, param_set, param_get, NULL, 0644);
  22         ],[
  23         ],[
  24                 AC_MSG_RESULT(yes)
  25                 AC_DEFINE(MODULE_PARAM_CALL_CONST, 1,
  26                     [hardened module_param_call])
  27         ],[
  28                 AC_MSG_RESULT(no)
  29         ])
  30 ])