Return -EOPNOTSUPP for ZFS_IOC_{GET|SET}FLAGS

[zfs.git] / config / kernel-xattr-handler.m4

diff --git a/config/kernel-xattr-handler.m4 b/config/kernel-xattr-handler.m4
index fa72945..325c960 100644 (file)
--- a/config/kernel-xattr-handler.m4
+++ b/config/kernel-xattr-handler.m4
@@ -19,7 +19,7 @@ AC_DEFUN([ZFS_AC_KERNEL_CONST_XATTR_HANDLER],
                        &xattr_test_handler,
                };
        ],[
-               struct super_block sb;
+               struct super_block sb __attribute__ ((unused));
 
                sb.s_xattr = xattr_handlers;
        ],[
@@ -30,3 +30,52 @@ AC_DEFUN([ZFS_AC_KERNEL_CONST_XATTR_HANDLER],
                AC_MSG_RESULT([no])
        ])
 ])
+
+dnl #
+dnl # 2.6.33 API change,
+dnl # The xattr_hander->get() callback was changed to take a dentry
+dnl # instead of an inode, and a handler_flags argument was added.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_GET], [
+       AC_MSG_CHECKING([whether xattr_handler->get() wants dentry])
+       ZFS_LINUX_TRY_COMPILE([
+               #include <linux/xattr.h>
+       ],[
+               int (*get)(struct dentry *dentry, const char *name,
+                   void *buffer, size_t size, int handler_flags) = NULL;
+               struct xattr_handler xops __attribute__ ((unused));
+
+               xops.get = get;
+       ],[
+               AC_MSG_RESULT(yes)
+               AC_DEFINE(HAVE_DENTRY_XATTR_GET, 1,
+                   [xattr_handler->get() wants dentry])
+       ],[
+               AC_MSG_RESULT(no)
+       ])
+])
+
+dnl #
+dnl # 2.6.33 API change,
+dnl # The xattr_hander->set() callback was changed to take a dentry
+dnl # instead of an inode, and a handler_flags argument was added.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_SET], [
+       AC_MSG_CHECKING([whether xattr_handler->set() wants dentry])
+       ZFS_LINUX_TRY_COMPILE([
+               #include <linux/xattr.h>
+       ],[
+               int (*set)(struct dentry *dentry, const char *name,
+                   const void *buffer, size_t size, int flags,
+                   int handler_flags) = NULL;
+               struct xattr_handler xops __attribute__ ((unused));
+
+               xops.set = set;
+       ],[
+               AC_MSG_RESULT(yes)
+               AC_DEFINE(HAVE_DENTRY_XATTR_SET, 1,
+                   [xattr_handler->set() wants dentry])
+       ],[
+               AC_MSG_RESULT(no)
+       ])
+])