1  /* Open a stream with a given file descriptor.
       2     Copyright (C) 2011-2023 Free Software Foundation, Inc.
       3  
       4     This file is free software: you can redistribute it and/or modify
       5     it under the terms of the GNU Lesser General Public License as
       6     published by the Free Software Foundation; either version 2.1 of the
       7     License, or (at your option) any later version.
       8  
       9     This file is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12     GNU Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public License
      15     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      16  
      17  #include <config.h>
      18  
      19  /* Specification.  */
      20  #include <stdio.h>
      21  
      22  #include <errno.h>
      23  
      24  #if HAVE_MSVC_INVALID_PARAMETER_HANDLER
      25  # include "msvc-inval.h"
      26  #endif
      27  
      28  #undef fdopen
      29  
      30  #if defined _WIN32 && !defined __CYGWIN__
      31  # if HAVE_MSVC_INVALID_PARAMETER_HANDLER
      32  static FILE *
      33  fdopen_nothrow (int fd, const char *mode)
      34  {
      35    FILE *result;
      36  
      37    TRY_MSVC_INVAL
      38      {
      39        result = _fdopen (fd, mode);
      40      }
      41    CATCH_MSVC_INVAL
      42      {
      43        result = NULL;
      44      }
      45    DONE_MSVC_INVAL;
      46  
      47    return result;
      48  }
      49  # else
      50  #  define fdopen_nothrow _fdopen
      51  # endif
      52  #else
      53  # define fdopen_nothrow fdopen
      54  #endif
      55  
      56  FILE *
      57  rpl_fdopen (int fd, const char *mode)
      58  {
      59    int saved_errno = errno;
      60    FILE *fp;
      61  
      62    errno = 0;
      63    fp = fdopen_nothrow (fd, mode);
      64    if (fp == NULL)
      65      {
      66        if (errno == 0)
      67          errno = EBADF;
      68      }
      69    else
      70      errno = saved_errno;
      71  
      72    return fp;
      73  }