src/open_by_handle: program to exercise open_by_handle_at() syscall

[xfstests-dev.git] / aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
index f3412e19208bcafb888b648b31238844243ee607..829fa101b25ff5e9908b546fdab072d9f1b567f5 100644 (file)
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -37,6 +37,21 @@ AC_DEFUN([AC_PACKAGE_WANT_FALLOCATE],
       [ have_fallocate=false; AC_MSG_RESULT(no) ])
     AC_SUBST(have_fallocate)
   ])
+
+AC_DEFUN([AC_PACKAGE_WANT_OPEN_BY_HANDLE_AT],
+  [ AC_MSG_CHECKING([for open_by_handle_at])
+    AC_TRY_LINK([
+#define _GNU_SOURCE
+#include <fcntl.h>
+      ],
+      [
+          struct file_handle fh;
+          open_by_handle_at(0, &fh, 0);
+      ],
+      [ have_open_by_handle_at=true; AC_MSG_RESULT(yes) ],
+      [ have_open_by_handle_at=false; AC_MSG_RESULT(no) ])
+    AC_SUBST(have_open_by_handle_at)
+  ])
 m4_include([m4/multilib.m4])
 m4_include([m4/package_acldev.m4])
 m4_include([m4/package_aiodev.m4])