xref: /freebsd-src/sys/contrib/openzfs/config/kernel-automount.m4 (revision fd45b686f9d92f583366c75b22c04c7ee49709c0)
1eda14cbcSMatt Macydnl #
2eda14cbcSMatt Macydnl # 2.6.37 API change
3eda14cbcSMatt Macydnl # The dops->d_automount() dentry operation was added as a clean
4eda14cbcSMatt Macydnl # solution to handling automounts.  Prior to this cifs/nfs clients
5eda14cbcSMatt Macydnl # which required automount support would abuse the follow_link()
6eda14cbcSMatt Macydnl # operation on directories for this purpose.
7eda14cbcSMatt Macydnl #
8eda14cbcSMatt MacyAC_DEFUN([ZFS_AC_KERNEL_SRC_AUTOMOUNT], [
9eda14cbcSMatt Macy	ZFS_LINUX_TEST_SRC([dentry_operations_d_automount], [
10eda14cbcSMatt Macy		#include <linux/dcache.h>
11*fd45b686SMartin Matuska		static struct vfsmount *d_automount(struct path *p) { return NULL; }
12eda14cbcSMatt Macy		struct dentry_operations dops __attribute__ ((unused)) = {
13eda14cbcSMatt Macy			.d_automount = d_automount,
14eda14cbcSMatt Macy		};
15eda14cbcSMatt Macy	])
16eda14cbcSMatt Macy])
17eda14cbcSMatt Macy
18eda14cbcSMatt MacyAC_DEFUN([ZFS_AC_KERNEL_AUTOMOUNT], [
19eda14cbcSMatt Macy	AC_MSG_CHECKING([whether dops->d_automount() exists])
20eda14cbcSMatt Macy	ZFS_LINUX_TEST_RESULT([dentry_operations_d_automount], [
21eda14cbcSMatt Macy		AC_MSG_RESULT(yes)
22eda14cbcSMatt Macy	],[
23eda14cbcSMatt Macy		ZFS_LINUX_TEST_ERROR([dops->d_automount()])
24eda14cbcSMatt Macy	])
25eda14cbcSMatt Macy])
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