config/kernel-automount.m4

   1 dnl #
   2 dnl # 2.6.37 API change
   3 dnl # The dops->d_automount() dentry operation was added as a clean
   4 dnl # solution to handling automounts.  Prior to this cifs/nfs clients
   5 dnl # which required automount support would abuse the follow_link()
   6 dnl # operation on directories for this purpose.
   7 dnl #
   8 AC_DEFUN([ZFS_AC_KERNEL_AUTOMOUNT], [
   9         AC_MSG_CHECKING([whether dops->d_automount() exists])
  10         ZFS_LINUX_TRY_COMPILE([
  11                 #include <linux/dcache.h>
  12                 struct vfsmount *d_automount(struct path *p) { return NULL; }
  13                 struct dentry_operations dops __attribute__ ((unused)) = {
  14                         .d_automount = d_automount,
  15                 };
  16         ],[
  17         ],[
  18                 AC_MSG_RESULT(yes)
  19                 AC_DEFINE(HAVE_AUTOMOUNT, 1, [dops->automount() exists])
  20         ],[
  21                 AC_MSG_RESULT(no)
  22         ])
  23 ])