--- /dev/null
+/* Tests of access.
+ Copyright (C) 2019 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/>. */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (access, int, (const char *, int));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include "macros.h"
+
+#define BASE "test-access.t"
+
+int
+main ()
+{
+ /* Remove anything from prior partial run. */
+ unlink (BASE "f");
+ unlink (BASE "f1");
+ unlink (BASE "f2");
+
+ {
+ errno = 0;
+ ASSERT (access (BASE "f", R_OK) == -1);
+ ASSERT (errno == ENOENT);
+
+ errno = 0;
+ ASSERT (access (BASE "f", W_OK) == -1);
+ ASSERT (errno == ENOENT);
+
+ errno = 0;
+ ASSERT (access (BASE "f", X_OK) == -1);
+ ASSERT (errno == ENOENT);
+ }
+ {
+ ASSERT (close (creat (BASE "f1", 0700)) == 0);
+
+ ASSERT (access (BASE "f1", R_OK) == 0);
+ ASSERT (access (BASE "f1", W_OK) == 0);
+ ASSERT (access (BASE "f1", X_OK) == 0);
+ }
+ {
+ ASSERT (close (creat (BASE "f2", 0600)) == 0);
+ ASSERT (chmod (BASE "f2", 0400) == 0);
+
+ ASSERT (access (BASE "f2", R_OK) == 0);
+
+ errno = 0;
+ ASSERT (access (BASE "f2", W_OK) == -1);
+ ASSERT (errno == EACCES);
+
+#if defined _WIN32 && !defined __CYGWIN__
+ /* X_OK works like R_OK. */
+ ASSERT (access (BASE "f2", X_OK) == 0);
+#else
+ errno = 0;
+ ASSERT (access (BASE "f2", X_OK) == -1);
+ ASSERT (errno == EACCES);
+#endif
+ }
+
+ return 0;
+}