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-rw-r--r--gnulib-tests/test-fstatat.c108
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diff --git a/gnulib-tests/test-fstatat.c b/gnulib-tests/test-fstatat.c
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+/* Tests of fstatat.
+ Copyright (C) 2009-2020 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 <https://www.gnu.org/licenses/>. */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009. */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fstatat, int, (int, char const *, struct stat *, int));
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "openat.h"
+#include "same-inode.h"
+#include "ignore-value.h"
+#include "macros.h"
+
+#ifndef BASE
+# define BASE "test-fstatat.t"
+#endif
+
+#include "test-lstat.h"
+#include "test-stat.h"
+
+static int dfd = AT_FDCWD;
+
+/* Wrapper around fstatat to test stat behavior. */
+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
+main (int argc _GL_UNUSED, char *argv[])
+{
+ int result;
+
+ /* Remove any leftovers from a previous partial run. */
+ ignore_value (system ("rm -rf " BASE "*"));
+
+ /* Test behaviour for invalid file descriptors. */
+ {
+ struct stat statbuf;
+
+ errno = 0;
+ ASSERT (fstatat (-1, "foo", &statbuf, 0) == -1);
+ ASSERT (errno == EBADF);
+ }
+ {
+ struct stat statbuf;
+
+ close (99);
+ errno = 0;
+ ASSERT (fstatat (99, "foo", &statbuf, 0) == -1);
+ ASSERT (errno == EBADF);
+ }
+
+ result = test_stat_func (do_stat, false);
+ ASSERT (test_lstat_func (do_lstat, false) == result);
+ dfd = open (".", O_RDONLY);
+ ASSERT (0 <= dfd);
+ ASSERT (test_stat_func (do_stat, false) == result);
+ ASSERT (test_lstat_func (do_lstat, false) == result);
+ ASSERT (close (dfd) == 0);
+
+ /* FIXME - add additional tests of dfd not at current directory. */
+
+ if (result == 77)
+ fputs ("skipping test: symlinks not supported on this file system\n",
+ stderr);
+ return result;
+}