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

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• Hash : 32a72f45
  Author :
  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

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• tests/test-symlinkat.c

• /* Tests of symlinkat.
     Copyright (C) 2009-2023 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 <unistd.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (symlinkat, int, (char const *, int, char const *));
  
  #include <fcntl.h>
  #include <errno.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 BASE "test-symlinkat.t"
  
  #include "test-symlink.h"
  
  static int dfd = AT_FDCWD;
  
  static int
  do_symlink (char const *contents, char const *name)
  {
    return symlinkat (contents, dfd, name);
  }
  
  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);
    ASSERT (test_symlink (do_symlink, false) == result);
  
    ASSERT (close (dfd) == 0);
    if (result == 77)
      fputs ("skipping test: symlinks not supported on this file system\n",
             stderr);
    return result;
  }
  

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