statat: new module, split out from fstatat

GNU Emacs needs the POSIX-specified fstatat, but not the
gnulib-specified statat and lstat.  Split the latter two into a
new module 'statat'.
* lib/openat.h: Depend on GNULIB_STATAT, not GNULIB_FSTATAT.
* lib/openat.h, lib/statat.c (STATAT_INLINE):
Rename from FSTATAT_INLINE. All uses changed.
* modules/fstatat (Files): Remove lib/statat.c.
(gl_MODULE_INDICATOR([fstatat])): Remove.
(lib_SOURCES): Remove.
(Maintainer): Add self.
* modules/statat, modules/statat-tests, tests/test-statat.c: New files.
* tests/test-fstatat.c (BASE): Don't define if already defined.
(do_stat, do_lstat) [!TEST_STATAT]: Test fstatat instead.

2 files changed, 38 insertions, 1 deletions

diff --git a/tests/test-fstatat.c b/tests/test-fstatat.c
index 83e184f025..9fdbe2e6eb 100644
--- a/tests/test-fstatat.c
+++ b/tests/test-fstatat.c
@@ -36,7 +36,9 @@ SIGNATURE_CHECK (fstatat, int, (int, char const *, struct stat *, int));
 #include "ignore-value.h"
 #include "macros.h"
 
-#define BASE "test-fstatat.t"
+#ifndef BASE
+# define BASE "test-fstatat.t"
+#endif
 
 #include "test-lstat.h"
 #include "test-stat.h"
@@ -47,14 +49,22 @@ static int dfd = AT_FDCWD;
 static int
 do_stat (char const *name, struct stat *st)
 {
+#ifdef TEST_STATAT
   return statat (dfd, name, st);
+#else
+  return fstatat (dfd, name, st, 0);
+#endif
 }
 
 /* Wrapper around fstatat to test lstat behavior.  */
 static int
 do_lstat (char const *name, struct stat *st)
 {
+#ifdef TEST_STATAT
   return lstatat (dfd, name, st);
+#else
+  return fstatat (dfd, name, st, AT_SYMLINK_NOFOLLOW);
+#endif
 }
 
 int
diff --git a/tests/test-statat.c b/tests/test-statat.c
new file mode 100644
index 0000000000..4adb3ab73d
--- /dev/null
+++ b/tests/test-statat.c
@@ -0,0 +1,27 @@
+/* Tests of statat and lstatat.
+   Copyright (C) 2009-2013 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "openat.h"
+
+#include "signature.h"
+SIGNATURE_CHECK (statat, int, (int, char const *, struct stat *));
+SIGNATURE_CHECK (lstatat, int, (int, char const *, struct stat *));
+
+#define BASE "test-statat.t"
+#define TEST_STATAT
+#include "test-fstatat.c"