Linux 3.6 compat, iops->mkdir()

[zfs.git] / config / kernel-mkdir-umode-t.m4

diff --git a/config/kernel-mkdir-umode-t.m4 b/config/kernel-mkdir-umode-t.m4
new file mode 100644 (file)
index 0000000..dd5d94b
--- /dev/null
+++ b/config/kernel-mkdir-umode-t.m4
@@ -0,0 +1,25 @@
+dnl #
+dnl # 3.3 API change
+dnl # The VFS .create, .mkdir and .mknod callbacks were updated to take a
+dnl # umode_t type rather than an int.  The expectation is that any backport
+dnl # would also change all three prototypes.  However, if it turns out that
+dnl # some distribution doesn't backport the whole thing this could be
+dnl # broken apart in to three seperate checks.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_MKDIR_UMODE_T], [
+       AC_MSG_CHECKING([whether iops->create()/mkdir()/mknod() take umode_t])
+       ZFS_LINUX_TRY_COMPILE([
+               #include <linux/fs.h>
+       ],[
+               int (*mkdir) (struct inode *,struct dentry *,umode_t) = NULL;
+               struct inode_operations iops __attribute__ ((unused)) = {
+                       .mkdir = mkdir,
+               };
+       ],[
+               AC_MSG_RESULT(yes)
+               AC_DEFINE(HAVE_MKDIR_UMODE_T, 1,
+                   [iops->create()/mkdir()/mknod() take umode_t])
+       ],[
+               AC_MSG_RESULT(no)
+       ])
+])