1  /*
       2   * Create a temporary file in the current directory.
       3   *
       4   * Copyright (c) 2020 Dmitry V. Levin <ldv@strace.io>
       5   * All rights reserved.
       6   *
       7   * SPDX-License-Identifier: GPL-2.0-or-later
       8   */
       9  
      10  #include "tests.h"
      11  #include <fcntl.h>
      12  #include <unistd.h>
      13  
      14  #ifndef O_TMPFILE
      15  # if defined __hppa__
      16  #  define O_TMPFILE	040000000
      17  # elif defined __alpha__
      18  #  define O_TMPFILE	0100000000
      19  # elif defined __sparc__
      20  #  define O_TMPFILE	0200000000
      21  # else
      22  #  define O_TMPFILE	020000000
      23  # endif
      24  #endif
      25  
      26  int
      27  create_tmpfile(unsigned int flags)
      28  {
      29  	int fd = open(".", O_TMPFILE | O_DIRECTORY | O_EXCL | flags, 0600);
      30  
      31  	if (fd < 0) {
      32  		/*
      33  		 * Since every test is executed in a separate directory,
      34  		 * there is no need to protect from race conditions.
      35  		 */
      36  		static const char fname[] = "create_tmpfile";
      37  
      38  		fd = open(fname, O_CREAT | O_EXCL | flags, 0600);
      39  		if (fd < 0)
      40  			perror_msg_and_fail("open: %s", fname);
      41  		if (unlink(fname))
      42  			perror_msg_and_fail("unlink: %s", fname);
      43  	}
      44  
      45  	return fd;
      46  }