1 /* Copyright (C) 1991, 1992, 1996, 1998 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library 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 GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
37 #include <process.h> /* For spawning child process */
42 #include "file_util.h"
45 #define __set_errno(x) errno=(x)
48 /* Generate a unique temporary file name from TEMPLATE.
49 The last six characters of TEMPLATE must be "XXXXXX";
50 they are replaced with a string that makes the filename unique.
51 Returns a file descriptor open on the file for reading and writing. */
56 static const char letters[]
57 = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
61 len = strlen (template);
62 if (len < 6 || strcmp (&template[len - 6], "XXXXXX"))
68 if (g_snprintf (&template[len - 5], 6, "%.5u",
69 (unsigned int) getpid () % 100000) != 5)
70 /* Inconceivable lossage. */
73 for (i = 0; i < sizeof (letters); ++i)
77 template[len - 6] = letters[i];
79 fd = eth_open (template, O_RDWR|O_BINARY|O_CREAT|O_EXCL, 0600);
84 /* We return the null string if we can't find a unique file name. */