test-symlinkat.c

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Hash : 82381b9e
Author :
Date : 2009-10-22T07:59:46

tests: avoid several compiler warnings

* tests/test-getcwd.c (main): Avoid buffer underflow.
* tests/test-getdate.c (main): String literals are not safe with
putenv, so use setenv.  Declare unused argument.
* modules/getdate-tests (Depends-on): Add setenv.
* tests/test-argv-iter.c (main): Declare unused argument.  Avoid
problems with string literals in char *.
* tests/test-hash.c (main): Avoid shadowing declaration.
(insert_new): Treat string literals as char const *.
* tests/test-getopt.h (test_getopt): Likewise.
(getopt_loop): Alter types to minimize casting elsewhere.
* tests/test-getopt_long.h (test_getopt_long, getopt_long_loop)
(test_getopt_long_posix): Likewise.
(do_getopt_long): Add wrapper to minimize casting.
* tests/test-atexit.c (clear_temp_file): Use void.
* tests/test-areadlink-with-size.c (main): Declare unused
arguments.
* tests/test-areadlink.c (main): Likewise.
* tests/test-areadlinkat-with-size.c (main): Likewise.
* tests/test-areadlinkat.c (main): Likewise.
* tests/test-canonicalize-lgpl.c (main): Likewise.
* tests/test-canonicalize.c (main): Likewise.
* tests/test-dirent-safer.c (main): Likewise.
* tests/test-dirname.c (main): Likewise.
* tests/test-dup2.c (main): Likewise.
* tests/test-fchdir.c (main): Likewise.
* tests/test-fcntl-h.c (main): Likewise.
* tests/test-fcntl-safer.c (main): Likewise.
* tests/test-fdopendir.c (main): Likewise.
* tests/test-fdutimensat.c (main): Likewise.
* tests/test-fflush.c (main): Likewise.
* tests/test-filenamecat.c (main): Likewise.
* tests/test-filevercmp.c (main): Likewise.
* tests/test-fopen-safer.c (main): Likewise.
* tests/test-fopen.c (main): Likewise.
* tests/test-fpending.c (main): Likewise.
* tests/test-fpurge.c (main): Likewise.
* tests/test-freading.c (main): Likewise.
* tests/test-fstatat.c (main): Likewise.
* tests/test-fsync.c (main): Likewise.
* tests/test-futimens.c (main): Likewise.
* tests/test-getndelim2.c (main): Likewise.
* tests/test-gettimeofday.c (main): Likewise.
* tests/test-getopt.c (main): Likewise.
* tests/test-i-ring.c (main): Likewise.
* tests/test-inttypes.c (main): Likewise.
* tests/test-link.c (main): Likewise.
* tests/test-lstat.c (main): Likewise.
* tests/test-math.c (main): Likewise.
* tests/test-md5.c (main): Likewise.
* tests/test-memchr2.c (main): Likewise.
* tests/test-memrchr.c (main): Likewise.
* tests/test-mkdir.c (main): Likewise.
* tests/test-mkdirat.c (main): Likewise.
* tests/test-mkfifoat.c (main): Likewise.
* tests/test-open.c (main): Likewise.
* tests/test-openat-safer.c (main): Likewise.
* tests/test-openat.c (main): Likewise.
* tests/test-quotearg.c (main): Likewise.
* tests/test-rawmemchr.c (main): Likewise.
* tests/test-readlink.c (main): Likewise.
* tests/test-remove.c (main): Likewise.
* tests/test-rename.c (main): Likewise.
* tests/test-renameat.c (main): Likewise.
* tests/test-rmdir.c (main): Likewise.
* tests/test-sha1.c (main): Likewise.
* tests/test-signal.c (main): Likewise.
* tests/test-sigaction.c (main): Likewise.
* tests/test-stat.c (main): Likewise.
* tests/test-stat-time.c (main): Likewise.
* tests/test-stddef.c (main): Likewise.
* tests/test-stdint.c (main): Likewise.
* tests/test-stdio.c (main): Likewise.
* tests/test-stdlib.c (main): Likewise.
* tests/test-strchrnul.c (main): Likewise.
* tests/test-strerror.c (main): Likewise.
* tests/test-string.c (main): Likewise.
* tests/test-strtod.c (main): Likewise.
* tests/test-strverscmp.c (main): Likewise.
* tests/test-symlink.c (main): Likewise.
* tests/test-symlinkat.c (main): Likewise.
* tests/test-sys_stat.c (main): Likewise.
* tests/test-sys_time.c (main): Likewise.
* tests/test-time.c (main): Likewise.
* tests/test-unistd.c (main): Likewise.
* tests/test-unlink.c (main): Likewise.
* tests/test-unlinkat.c (main): Likewise.
* tests/test-utimens.c (main): Likewise.
* tests/test-utimensat.c (main): Likewise.
* tests/test-version-etc.c (main): Likewise.
* tests/test-wchar.c (main): Likewise.
* tests/test-wctype.c (main): Likewise.
* tests/test-xprintf-posix.c (main): Likewise.
* tests/test-posixtm.c (main): Likewise.
(STREQ): Delete unused macro.
* tests/test-linkat.c (main): Declare unused arguments.  Avoid
shadowed variables.
* tests/test-memchr.c (main): Likewise.

Signed-off-by: Eric Blake <ebb9@byu.net>

Download

tests/test-symlinkat.c

/* Tests of symlinkat and readlinkat.
   Copyright (C) 2009 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/>.  */

/* Written by Eric Blake <ebb9@byu.net>, 2009.  */

#include <config.h>

#include <unistd.h>

#include <fcntl.h>
#include <errno.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.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"

#include "test-readlink.h"
#include "test-symlink.h"

static int dfd = AT_FDCWD;

static int
do_symlink (char const *contents, char const *name)
{
  return symlinkat (contents, dfd, name);
}

static ssize_t
do_readlink (char const *name, char *buf, size_t len)
{
  return readlinkat (dfd, name, buf, len);
}

int
main (void)
{
  char buf[80];
  int result;

  /* Remove any leftovers from a previous partial run.  */
  ASSERT (system ("rm -rf " BASE "*") == 0);

  /* Perform same checks as counterpart functions.  */
  result = test_readlink (do_readlink, false);
  ASSERT (test_symlink (do_symlink, false) == result);
  dfd = openat (AT_FDCWD, ".", O_RDONLY);
  ASSERT (0 <= dfd);
  ASSERT (test_readlink (do_readlink, false) == result);
  ASSERT (test_symlink (do_symlink, false) == result);

  /* Now perform some cross-directory checks.  Skip everything else on
     mingw.  */
  if (HAVE_SYMLINK)
    {
      const char *contents = "don't matter!";
      ssize_t exp = strlen (contents);

      /* Create link while cwd is '.', then read it in '..'.  */
      ASSERT (symlinkat (contents, AT_FDCWD, BASE "link") == 0);
      errno = 0;
      ASSERT (symlinkat (contents, dfd, BASE "link") == -1);
      ASSERT (errno == EEXIST);
      ASSERT (chdir ("..") == 0);
      errno = 0;
      ASSERT (readlinkat (AT_FDCWD, BASE "link", buf, sizeof buf) == -1);
      ASSERT (errno == ENOENT);
      ASSERT (readlinkat (dfd, BASE "link", buf, sizeof buf) == exp);
      ASSERT (strncmp (contents, buf, exp) == 0);
      ASSERT (unlinkat (dfd, BASE "link", 0) == 0);

      /* Create link while cwd is '..', then read it in '.'.  */
      ASSERT (symlinkat (contents, dfd, BASE "link") == 0);
      ASSERT (fchdir (dfd) == 0);
      errno = 0;
      ASSERT (symlinkat (contents, AT_FDCWD, BASE "link") == -1);
      ASSERT (errno == EEXIST);
      buf[0] = '\0';
      ASSERT (readlinkat (AT_FDCWD, BASE "link", buf, sizeof buf) == exp);
      ASSERT (strncmp (contents, buf, exp) == 0);
      buf[0] = '\0';
      ASSERT (readlinkat (dfd, BASE "link", buf, sizeof buf) == exp);
      ASSERT (strncmp (contents, buf, exp) == 0);
      ASSERT (unlink (BASE "link") == 0);
    }

  ASSERT (close (dfd) == 0);
  if (result == 77)
    fputs ("skipping test: symlinks not supported on this file system\n",
	   stderr);
  return result;
}

Download

kc3-lang/gnulib/tests/test-symlinkat.c

Commit

tests/test-symlinkat.c