/* Tests of readlink.
- Copyright (C) 2009 Free Software Foundation, Inc.
+ Copyright (C) 2009-2011 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 (readlink, ssize_t, (char const *, char *, size_t));
+
#include <fcntl.h>
#include <errno.h>
+#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
-#define ASSERT(expr) \
- do \
- { \
- if (!(expr)) \
- { \
- fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
- fflush (stderr); \
- abort (); \
- } \
- } \
- while (0)
+#include "ignore-value.h"
+#include "macros.h"
#define BASE "test-readlink.t"
+#include "test-readlink.h"
+
int
-main ()
+main (void)
{
- char buf[80];
-
/* Remove any leftovers from a previous partial run. */
- ASSERT (system ("rm -rf " BASE "*") == 0);
-
- /* Sanity checks of failures. Mingw lacks symlink, but readlink can
- still distinguish between various errors. */
- memset (buf, 0xff, sizeof buf);
- errno = 0;
- ASSERT (readlink ("no_such", buf, sizeof buf) == -1);
- ASSERT (errno == ENOENT);
- errno = 0;
- ASSERT (readlink ("no_such/", buf, sizeof buf) == -1);
- ASSERT (errno == ENOENT);
- errno = 0;
- ASSERT (readlink ("", buf, sizeof buf) == -1);
- ASSERT (errno == ENOENT);
- errno = 0;
- ASSERT (readlink (".", buf, sizeof buf) == -1);
- ASSERT (errno == EINVAL);
- errno = 0;
- ASSERT (readlink ("./", buf, sizeof buf) == -1);
- ASSERT (errno == EINVAL);
- ASSERT (close (creat (BASE "file", 0600)) == 0);
- errno = 0;
- ASSERT (readlink (BASE "file", buf, sizeof buf) == -1);
- ASSERT (errno == EINVAL);
- errno = 0;
- ASSERT (readlink (BASE "file/", buf, sizeof buf) == -1);
- ASSERT (errno == ENOTDIR);
- ASSERT (unlink (BASE "file") == 0);
-
- /* Now test actual symlinks. */
- if (symlink (BASE "dir", BASE "link"))
- {
- fputs ("skipping test: symlinks not supported on this filesystem\n",
- stderr);
- return 77;
- }
- ASSERT (mkdir (BASE "dir", 0700) == 0);
- errno = 0;
- ASSERT (readlink (BASE "link/", buf, sizeof buf) == -1);
- ASSERT (errno == EINVAL);
- {
- /* Up till now, no readlink has been successful, so buf should be
- unchanged. */
- int i;
- for (i = 0; i < sizeof buf; i++)
- ASSERT (buf[i] == (char) 0xff);
- }
- {
- size_t len = strlen (BASE "dir");
- /* When passing too small of a buffer, expect the truncated
- length, or an ERANGE failure. However, a size of 0 is not
- portable enough to test. */
- ssize_t result;
- errno = 0;
- result = readlink (BASE "link", buf, 1);
- if (result == -1)
- {
- ASSERT (errno == ERANGE);
- ASSERT (buf[0] == (char) 0xff);
- }
- else
- {
- ASSERT (result == 1);
- ASSERT (buf[0] == BASE[0]);
- }
- ASSERT (buf[1] == (char) 0xff);
- ASSERT (readlink (BASE "link", buf, len) == len);
- ASSERT (strncmp (buf, BASE "dir", len) == 0);
- ASSERT (buf[len] == (char) 0xff);
- ASSERT (readlink (BASE "link", buf, sizeof buf) == len);
- ASSERT (strncmp (buf, BASE "dir", len) == 0);
- /* POSIX says rest of buf is unspecified; but in practice, it is
- either left alone, or NUL-terminated. */
- ASSERT (buf[len] == '\0' || buf[len] == (char) 0xff);
- }
- ASSERT (rmdir (BASE "dir") == 0);
- ASSERT (unlink (BASE "link") == 0);
+ ignore_value (system ("rm -rf " BASE "*"));
- return 0;
+ return test_readlink (readlink, true);
}