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Diffstat (limited to 'libguile/mkstemp.c')
-rw-r--r-- | libguile/mkstemp.c | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/libguile/mkstemp.c b/libguile/mkstemp.c deleted file mode 100644 index d752d0714..000000000 --- a/libguile/mkstemp.c +++ /dev/null @@ -1,129 +0,0 @@ -/* Copyright (C) 1991, 1992, 1996, 1998, 2001, 2006, 2013, - 2014 Free Software Foundation, Inc. - - This file is derived from mkstemps.c from the GNU Libiberty Library - which in turn is derived from the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - The GNU C Library 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. -*/ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include "libguile/__scm.h" - -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif -#ifdef HAVE_STRING_H -#include <string.h> -#endif -#include <errno.h> -#include <stdio.h> -#include <fcntl.h> -#include <unistd.h> -#ifdef HAVE_SYS_TIME_H -#include <sys/time.h> -#endif -#ifdef __MINGW32__ -#include <process.h> -#endif - -#ifndef TMP_MAX -#define TMP_MAX 16384 -#endif - -/* We provide this prototype to avoid compiler warnings. If this ever - conflicts with a declaration in a system header file, we'll find - out, because we should include that header file here. */ -int mkstemp (char *); - -/* Generate a unique temporary file name from TEMPLATE. - - TEMPLATE has the form: - - <path>/ccXXXXXX - - The last six characters of TEMPLATE must be "XXXXXX"; they are - replaced with a string that makes the filename unique. - - Returns a file descriptor open on the file for reading and writing. */ -int -mkstemp (template) - char *template; -{ - static const char letters[] - = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; - static scm_t_uint64 value; -#ifdef HAVE_GETTIMEOFDAY - struct timeval tv; -#endif - char *XXXXXX; - size_t len; - int count; - - len = strlen (template); - - if ((int) len < 6 - || strncmp (&template[len - 6], "XXXXXX", 6)) - { - return -1; - } - - XXXXXX = &template[len - 6]; - -#ifdef HAVE_GETTIMEOFDAY - /* Get some more or less random data. */ - gettimeofday (&tv, NULL); - value += ((scm_t_uint64) tv.tv_usec << 16) ^ tv.tv_sec ^ getpid (); -#else - value += getpid (); -#endif - - for (count = 0; count < TMP_MAX; ++count) - { - scm_t_uint64 v = value; - int fd; - - /* Fill in the random bits. */ - XXXXXX[0] = letters[v % 62]; - v /= 62; - XXXXXX[1] = letters[v % 62]; - v /= 62; - XXXXXX[2] = letters[v % 62]; - v /= 62; - XXXXXX[3] = letters[v % 62]; - v /= 62; - XXXXXX[4] = letters[v % 62]; - v /= 62; - XXXXXX[5] = letters[v % 62]; - - fd = open (template, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600); - if (fd >= 0) - /* The file does not exist. */ - return fd; - - /* This is a random value. It is only necessary that the next - TMP_MAX values generated by adding 7777 to VALUE are different - with (module 2^32). */ - value += 7777; - } - - /* We return the null string if we can't find a unique file name. */ - template[0] = '\0'; - return -1; -} |