X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=config%2Fkernel-automount.m4;fp=config%2Fkernel-automount.m4;h=972b09bd074595a97180f7c2f0203b0ff94d05cc;hb=ebe7e575eae1e03b1faa545a424f008faeac589d;hp=0000000000000000000000000000000000000000;hpb=49be0ccf1fdc2ce852271d4d2f8b7a9c2c4be6db;p=zfs.git

diff --git a/config/kernel-automount.m4 b/config/kernel-automount.m4
new file mode 100644
index 0000000..972b09b
--- /dev/null
+++ b/config/kernel-automount.m4
@@ -0,0 +1,23 @@
+dnl #
+dnl # 2.6.37 API change
+dnl # The dops->d_automount() dentry operation was added as a clean
+dnl # solution to handling automounts.  Prior to this cifs/nfs clients
+dnl # which required automount support would abuse the follow_link()
+dnl # operation on directories for this purpose.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_AUTOMOUNT], [
+	AC_MSG_CHECKING([whether dops->d_automount() exists])
+	ZFS_LINUX_TRY_COMPILE([
+		#include <linux/dcache.h>
+	],[
+		struct vfsmount *(*d_automount) (struct path *) = NULL;
+		struct dentry_operations dops __attribute__ ((unused)) = {
+			.d_automount = d_automount,
+		};
+	],[
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_AUTOMOUNT, 1, [dops->automount() exists])
+	],[
+		AC_MSG_RESULT(no)
+	])
+])