-/* Tests of symlinkat and readlinkat.
- Copyright (C) 2009 Free Software Foundation, Inc.
+/* Tests of symlinkat.
+ 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
#include <unistd.h>
+#include "signature.h"
+SIGNATURE_CHECK (symlinkat, int, (char const *, int, char const *));
+
#include <fcntl.h>
#include <errno.h>
+#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
+#include "ignore-value.h"
+#include "macros.h"
+
#ifndef HAVE_SYMLINK
# define HAVE_SYMLINK 0
#endif
-#define ASSERT(expr) \
- do \
- { \
- if (!(expr)) \
- { \
- fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
- fflush (stderr); \
- abort (); \
- } \
- } \
- while (0)
+#define BASE "test-symlinkat.t"
-int
-main ()
+#include "test-symlink.h"
+
+static int dfd = AT_FDCWD;
+
+static int
+do_symlink (char const *contents, char const *name)
{
- char buf[80];
+ return symlinkat (contents, dfd, name);
+}
- /* Create handle for future use. */
- int dfd = openat (AT_FDCWD, ".", O_RDONLY);
+int
+main (void)
+{
+ int result;
+
+ /* Remove any leftovers from a previous partial run. */
+ ignore_value (system ("rm -rf " BASE "*"));
+
+ /* Test behaviour for invalid file descriptors. */
+ {
+ errno = 0;
+ ASSERT (symlinkat ("foo", -1, "bar") == -1);
+ ASSERT (errno == EBADF
+ || errno == ENOSYS /* seen on mingw */
+ );
+ }
+ {
+ close (99);
+ errno = 0;
+ ASSERT (symlinkat ("foo", 99, "bar") == -1);
+ ASSERT (errno == EBADF
+ || errno == ENOSYS /* seen on mingw */
+ );
+ }
+
+ /* Perform same checks as counterpart functions. */
+ result = test_symlink (do_symlink, false);
+ dfd = openat (AT_FDCWD, ".", O_RDONLY);
ASSERT (0 <= dfd);
-
- /* Sanity checks of failures. Mingw lacks symlinkat, but readlinkat
- can still distinguish between various errors. */
- errno = 0;
- ASSERT (readlinkat (AT_FDCWD, "no_such", buf, sizeof buf) == -1);
- ASSERT (errno == ENOENT);
- errno = 0;
- ASSERT (readlinkat (dfd, "no_such", buf, sizeof buf) == -1);
- ASSERT (errno == ENOENT);
- errno = 0;
- ASSERT (readlinkat (AT_FDCWD, "", buf, sizeof buf) == -1);
- ASSERT (errno == ENOENT);
- errno = 0;
- ASSERT (readlinkat (dfd, "", buf, sizeof buf) == -1);
- ASSERT (errno == ENOENT);
- errno = 0;
- ASSERT (readlinkat (AT_FDCWD, ".", buf, sizeof buf) == -1);
- ASSERT (errno == EINVAL);
- errno = 0;
- ASSERT (readlinkat (dfd, ".", buf, sizeof buf) == -1);
- ASSERT (errno == EINVAL);
- errno = 0;
- ASSERT (symlinkat ("who cares", AT_FDCWD, "") == -1);
- ASSERT (errno == ENOENT || errno == ENOSYS);
- errno = 0;
- ASSERT (symlinkat ("who cares", dfd, "") == -1);
- ASSERT (errno == ENOENT || errno == ENOSYS);
-
- /* Skip everything else on mingw. */
- if (HAVE_SYMLINK)
- {
- const char *linkname = "test-symlinkat.link";
- const char *contents = "don't matter!";
- int exp = strlen (contents);
-
- /* Create link while cwd is '.', then read it in '..'. */
- ASSERT (symlinkat (contents, AT_FDCWD, linkname) == 0);
- errno = 0;
- ASSERT (symlinkat (contents, dfd, linkname) == -1);
- ASSERT (errno == EEXIST);
- ASSERT (chdir ("..") == 0);
- errno = 0;
- ASSERT (readlinkat (AT_FDCWD, linkname, buf, sizeof buf) == -1);
- ASSERT (errno == ENOENT);
- ASSERT (readlinkat (dfd, linkname, buf, sizeof buf) == exp);
- ASSERT (strncmp (contents, buf, exp) == 0);
- ASSERT (unlinkat (dfd, linkname, 0) == 0);
-
- /* Create link while cwd is '..', then read it in '.'. */
- ASSERT (symlinkat (contents, dfd, linkname) == 0);
- ASSERT (fchdir (dfd) == 0);
- errno = 0;
- ASSERT (symlinkat (contents, AT_FDCWD, linkname) == -1);
- ASSERT (errno == EEXIST);
- buf[0] = '\0';
- ASSERT (readlinkat (AT_FDCWD, linkname, buf, sizeof buf) == exp);
- ASSERT (strncmp (contents, buf, exp) == 0);
- buf[0] = '\0';
- ASSERT (readlinkat (dfd, linkname, buf, sizeof buf) == exp);
- ASSERT (strncmp (contents, buf, exp) == 0);
- ASSERT (unlink (linkname) == 0);
- }
+ ASSERT (test_symlink (do_symlink, false) == result);
ASSERT (close (dfd) == 0);
-
- return 0;
+ if (result == 77)
+ fputs ("skipping test: symlinks not supported on this file system\n",
+ stderr);
+ return result;
}