File: tempname.h

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/* Create a temporary file or directory.

   Copyright (C) 2006, 2009-2011 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 <http://www.gnu.org/licenses/>.  */

/* header written by Eric Blake */

#ifndef GL_TEMPNAME_H
# define GL_TEMPNAME_H

# include <stdio.h>

# ifdef __GT_FILE
#  define GT_FILE     __GT_FILE
#  define GT_DIR      __GT_DIR
#  define GT_NOCREATE __GT_NOCREATE
# else
#  define GT_FILE     0
#  define GT_DIR      1
#  define GT_NOCREATE 2
# endif

/* Generate a temporary file name based on TMPL.  TMPL must match the
   rules for mk[s]temp (i.e. end in "XXXXXX", possibly with a suffix).
   The name constructed does not exist at the time of the call to
   gen_tempname.  TMPL is overwritten with the result.

   KIND may be one of:
   GT_NOCREATE:         simply verify that the name does not exist
                        at the time of the call.
   GT_FILE:             create a large file using open(O_CREAT|O_EXCL)
                        and return a read-write fd.  The file is mode 0600.
   GT_DIR:              create a directory, which will be mode 0700.

   We use a clever algorithm to get hard-to-predict names. */
extern int gen_tempname (char *tmpl, int suffixlen, int flags, int kind);

#endif /* GL_TEMPNAME_H */