/* Copyright (c) 2000, 2025, Oracle and/or its affiliates.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License, version 2.0,

   as published by the Free Software Foundation.

   This program is designed to work with certain software (including

   but not limited to OpenSSL) that is licensed under separate terms,

   as designated in a particular file or component or in included license

   documentation.  The authors of MySQL hereby grant you an additional

   permission to link the program and your derivative works with the

   separately licensed software that they have either included with

   the program or referenced in the documentation.

   Without limiting anything contained in the foregoing, this file,

   which is part of C Driver for MySQL (Connector/C), is also subject to the

   Universal FOSS Exception, version 1.0, a copy of which can be found at

   http://oss.oracle.com/licenses/universal-foss-exception.

   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, version 2.0, for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */

/**

  @file mysys/my_open.cc

*/

#include "my_config.h"

#include <fcntl.h>

#include <cerrno>

#include <string>

#ifdef HAVE_UNISTD_H

#include <unistd.h>

#endif

#include "my_dbug.h"

#include "my_inttypes.h"

#include "my_sys.h"

#include "my_thread_local.h"

#include "mysys/mysys_priv.h"

#include "mysys_err.h"

/**

  Open a file.

  @param filename   Fully qualified file name

  @param Flags      Read | write

  @param MyFlags    Special flags

  @retval File descriptor if successful

  @retval -1 in case of errors

*/

File my_open(const char *filename, int Flags, myf MyFlags) {

  DBUG_TRACE;

  File fd = -1;

#if defined(_WIN32)

  fd = my_win_open(filename, Flags);

#else

  fd = mysys_priv::RetryOnEintr(

      [&]() { return open(filename, Flags, my_umask); }, -1);

#endif

  if (fd < 0) {

    set_my_errno(errno);

    DBUG_PRINT("error", ("Got error %d on open", my_errno()));

    if (MyFlags & (MY_FAE | MY_WME)) {

      MyOsError(my_errno(), EE_FILENOTFOUND, MYF(0), filename);

    }

    return fd;

  }

  RegisterFilename(fd, filename, file_info::OpenType::FILE_BY_OPEN);

  return fd;

}

/**

  Close a file.

  @param fd   File sescriptor

  @param MyFlags  Special Flags

  @retval 0 if successful

  @retval -1 in case of errors

*/

int my_close(File fd, myf MyFlags) {

  DBUG_TRACE;

  // Save the filename before unregistering, in case we need to report

  // error from close()

  const std::string fname = my_filename(fd);

  // Need to remove file_info entry first to avoid race with another

  // thread reusing this fd after it has been closed.

  file_info::UnregisterFilename(fd);

  int err = -1;

#ifndef _WIN32

  err = mysys_priv::RetryOnEintr([&fd]() { return close(fd); }, -1);

#else

  err = my_win_close(fd);

#endif

  if (err == -1) {

    DBUG_PRINT("error", ("Got error %d on close", err));

    set_my_errno(errno);

    if (MyFlags & (MY_FAE | MY_WME)) {

      MyOsError(my_errno(), EE_BADCLOSE, MYF(0), fname.c_str());

    }

  }

  return err;

}