config/kernel-xattr-handler.m4

   1 dnl #
   2 dnl # 2.6.35 API change,
   3 dnl # The 'struct xattr_handler' was constified in the generic
   4 dnl # super_block structure.
   5 dnl #
   6 AC_DEFUN([ZFS_AC_KERNEL_CONST_XATTR_HANDLER],
   7         [AC_MSG_CHECKING([whether super_block uses const struct xattr_hander])
   8         ZFS_LINUX_TRY_COMPILE([
   9                 #include <linux/fs.h>
  10                 #include <linux/xattr.h>
  11
  12                 const struct xattr_handler xattr_test_handler = {
  13                         .prefix = "test",
  14                         .get    = NULL,
  15                         .set    = NULL,
  16                 };
  17
  18                 const struct xattr_handler *xattr_handlers[] = {
  19                         &xattr_test_handler,
  20                 };
  21         ],[
  22                 struct super_block sb;
  23
  24                 sb.s_xattr = xattr_handlers;
  25         ],[
  26                 AC_MSG_RESULT([yes])
  27                 AC_DEFINE(HAVE_CONST_XATTR_HANDLER, 1,
  28                           [super_block uses const struct xattr_hander])
  29         ],[
  30                 AC_MSG_RESULT([no])
  31         ])
  32 ])