sys/contrib/openzfs/config/kernel-super-userns.m4

   1 dnl #
   2 dnl # 4.8 API change
   3 dnl # struct user_namespace was added to struct super_block as
   4 dnl # super->s_user_ns member
   5 dnl #
   6 AC_DEFUN([ZFS_AC_KERNEL_SRC_SUPER_USER_NS], [
   7         ZFS_LINUX_TEST_SRC([super_user_ns], [
   8                 #include <linux/fs.h>
   9                 #include <linux/user_namespace.h>
  10         ], [
  11                 struct super_block super;
  12                 super.s_user_ns = (struct user_namespace *)NULL;
  13         ])
  14 ])
  15
  16 AC_DEFUN([ZFS_AC_KERNEL_SUPER_USER_NS], [
  17         AC_MSG_CHECKING([whether super_block->s_user_ns exists])
  18         ZFS_LINUX_TEST_RESULT([super_user_ns], [
  19                 AC_MSG_RESULT(yes)
  20                 AC_DEFINE(HAVE_SUPER_USER_NS, 1,
  21                     [super_block->s_user_ns exists])
  22         ],[
  23                 AC_MSG_RESULT(no)
  24         ])
  25 ])