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guile/libguile/mkstemp.c
Stefan Jahn 2e945bccca 2003-05-29 Stefan Jahn <stefan@lkcc.org>
* configure.in: Removed -lm check and added a cached check for
        __libc_stack_end to get it building for mingw32 hosts.

2003-05-29  Stefan Jahn  <stefan@lkcc.org>

        * win32-dirent.c: Use malloc() instead of scm_malloc().

        * stime.c (s_scm_strftime): Add a type cast to avoid compiler
        warning.

        * posix.c (s_scm_putenv): Disable use of unsetenv() for the
        mingw32 build.

        * modules.c (s_scm_module_import_interface): Renamed local
        variable interface to _interface.  Seems like 'interface'
        is a special compiler directive for the mingw32 compiler.

        * mkstemp.c: Provide prototype to avoid compiler warning.

        * load.c (s_scm_search_path): Fixed absolute and relative
        path detections for native Windows platforms.

        * gc.h, threads.h: Export some more symbols using SCM_API
	(necessary to build on mingw32).

        * gc-freelist.c ("s_scm_map_free_list",
        "s_scm_gc_set_debug_check_freelist_x"): Fixed use of FUNC_NAME.

        * fports.c (fport_fill_input): Disable use of
        fport_wait_for_input() on Win32 platforms.

        * filesys.c (s_scm_basename): Fixed __MINGW32__ code.

        * Makefile.am: Modified some rules for cross compiling.

2003-05-29  Stefan Jahn  <stefan@lkcc.org>

        * raw-ltdl.c: Some more modifications for mingw32 platforms.

2003-05-29  Stefan Jahn  <stefan@lkcc.org>

        * Makefile.am (libguile_srfi_srfi_1_la_LDFLAGS,
        libguile_srfi_srfi_4_la_LDFLAGS,
        libguile_srfi_srfi_13_14__la_LDFLAGS): Added the -no-undefined
        option for the mingw32 build.

2003-05-29  Stefan Jahn  <stefan@lkcc.org>

        * standalone/Makefile.am: Setup to build on mingw32.
2003-05-29 14:39:13 +00:00

129 lines
3.3 KiB
C

/* Copyright (C) 1991, 1992, 1996, 1998, 2001 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#if 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>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#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, 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;
}