config/kernel-access-ok-type.m4

   1 dnl #
   2 dnl # Linux 5.0: access_ok() drops 'type' parameter:
   3 dnl #
   4 dnl # - access_ok(type, addr, size)
   5 dnl # + access_ok(addr, size)
   6 dnl #
   7 AC_DEFUN([ZFS_AC_KERNEL_SRC_ACCESS_OK_TYPE], [
   8         ZFS_LINUX_TEST_SRC([access_ok_type], [
   9                 #include <linux/uaccess.h>
  10         ],[
  11                 const void __user __attribute__((unused)) *addr =
  12                     (void *) 0xdeadbeef;
  13                 unsigned long __attribute__((unused)) size = 1;
  14                 int error __attribute__((unused)) = access_ok(0, addr, size);
  15         ])
  16 ])
  17
  18 AC_DEFUN([ZFS_AC_KERNEL_ACCESS_OK_TYPE], [
  19         AC_MSG_CHECKING([whether access_ok() has 'type' parameter])
  20         ZFS_LINUX_TEST_RESULT([access_ok_type], [
  21                 AC_MSG_RESULT(yes)
  22                 AC_DEFINE(HAVE_ACCESS_OK_TYPE, 1,
  23                     [kernel has access_ok with 'type' parameter])
  24         ],[
  25                 AC_MSG_RESULT(no)
  26         ])
  27 ])