support/temp_file.h

   1 /* Declarations for temporary file handling.
   2    Copyright (C) 2016-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef SUPPORT_TEMP_FILE_H
  20 #define SUPPORT_TEMP_FILE_H
  21
  22 #include <sys/cdefs.h>
  23
  24 __BEGIN_DECLS
  25
  26 /* Schedule a temporary file for deletion on exit.  */
  27 void add_temp_file (const char *name);
  28
  29 /* Create a temporary file.  Return the opened file descriptor on
  30    success, or -1 on failure.  Write the file name to *FILENAME if
  31    FILENAME is not NULL.  In this case, the caller is expected to free
  32    *FILENAME.  */
  33 int create_temp_file (const char *base, char **filename);
  34
  35 /* Create a temporary file in directory DIR.  Return the opened file
  36    descriptor on success, or -1 on failure.  Write the file name to
  37    *FILENAME if FILENAME is not NULL.  In this case, the caller is
  38    expected to free *FILENAME.  */
  39 int create_temp_file_in_dir (const char *base, const char *dir,
  40                              char **filename);
  41
  42 /* Create a temporary directory and schedule it for deletion.  BASE is
  43    used as a prefix for the unique directory name, which the function
  44    returns.  The caller should free this string.  */
  45 char *support_create_temp_directory (const char *base);
  46
  47 /* Create a temporary directory tree that is longer than PATH_MAX and schedule
  48    it for deletion.  BASENAME is used as a prefix for the unique directory
  49    name, which the function returns.  The caller should free this string.  */
  50 char *support_create_and_chdir_toolong_temp_directory (const char *basename);
  51
  52 /* Change into the innermost directory of the directory tree BASE, which was
  53    created using support_create_and_chdir_toolong_temp_directory.  */
  54 void support_chdir_toolong_temp_directory (const char *base);
  55
  56 __END_DECLS
  57
  58 #endif /* SUPPORT_TEMP_FILE_H */