-/* Copyright (C) 1999, 2001-2003, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 1999, 2001-2003, 2006-2007, 2009-2014 Free Software
+ Foundation, Inc.
This file is part of the GNU C Library.
- This program is free software; you can redistribute it and/or modify
+ 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 2, or (at your option)
- any later version.
+ 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, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-/* Extracted from misc/mkdtemp.c and sysdeps/posix/tempname.c. */
+/* Extracted from misc/mkdtemp.c. */
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
+#include <config.h>
/* Specification. */
-#include "mkdtemp.h"
-
-#include <errno.h>
-#ifndef __set_errno
-# define __set_errno(Val) errno = (Val)
-#endif
-
-#include <stddef.h>
#include <stdlib.h>
-#include <string.h>
-
-#include <stdio.h>
-#ifndef TMP_MAX
-# define TMP_MAX 238328
-#endif
-
-#if HAVE_STDINT_H || _LIBC
-# include <stdint.h>
-#endif
-#if HAVE_INTTYPES_H
-# include <inttypes.h>
-#endif
-
-#include <unistd.h>
-
-#if HAVE_GETTIMEOFDAY || _LIBC
-# if HAVE_SYS_TIME_H || _LIBC
-# include <sys/time.h>
-# endif
-#else
-# if HAVE_TIME_H || _LIBC
-# include <time.h>
-# endif
-#endif
-
-#include <sys/stat.h>
-#if !defined S_ISDIR && defined S_IFDIR
-# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
-#endif
-#if !S_IRUSR && S_IREAD
-# define S_IRUSR S_IREAD
-#endif
-#if !S_IRUSR
-# define S_IRUSR 00400
-#endif
-#if !S_IWUSR && S_IWRITE
-# define S_IWUSR S_IWRITE
-#endif
-#if !S_IWUSR
-# define S_IWUSR 00200
-#endif
-#if !S_IXUSR && S_IEXEC
-# define S_IXUSR S_IEXEC
-#endif
-#if !S_IXUSR
-# define S_IXUSR 00100
-#endif
-
-#ifdef __MINGW32__
-# include <io.h>
-/* mingw's _mkdir() function has 1 argument, but we pass 2 arguments.
- Therefore we have to disable the argument count checking. */
-# define mkdir ((int (*)()) _mkdir)
-#endif
-
-#if !_LIBC
-# define __getpid getpid
-# define __gettimeofday gettimeofday
-# define __mkdir mkdir
-#endif
-
-/* Use the widest available unsigned type if uint64_t is not
- available. The algorithm below extracts a number less than 62**6
- (approximately 2**35.725) from uint64_t, so ancient hosts where
- uintmax_t is only 32 bits lose about 3.725 bits of randomness,
- which is better than not having mkstemp at all. */
-#if !defined UINT64_MAX && !defined uint64_t
-# define uint64_t uintmax_t
-#endif
-
-/* These are the characters used in temporary filenames. */
-static const char letters[] =
-"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
-
-/* Generate a temporary file name based on TMPL. TMPL must match the
- rules for mk[s]temp (i.e. end in "XXXXXX"). The name constructed
- does not exist at the time of the call to __gen_tempname. TMPL is
- overwritten with the result.
- KIND is:
- __GT_DIR: create a directory, which will be mode 0700.
-
- We use a clever algorithm to get hard-to-predict names. */
-static int
-gen_tempname (char *tmpl)
-{
- int len;
- char *XXXXXX;
- static uint64_t value;
- uint64_t random_time_bits;
- int count, fd = -1;
- int save_errno = errno;
-
- len = strlen (tmpl);
- if (len < 6 || strcmp (&tmpl[len - 6], "XXXXXX"))
- {
- __set_errno (EINVAL);
- return -1;
- }
-
- /* This is where the Xs start. */
- XXXXXX = &tmpl[len - 6];
-
- /* Get some more or less random data. */
-#ifdef RANDOM_BITS
- RANDOM_BITS (random_time_bits);
-#else
-# if HAVE_GETTIMEOFDAY || _LIBC
- {
- struct timeval tv;
- __gettimeofday (&tv, NULL);
- random_time_bits = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec;
- }
-# else
- random_time_bits = time (NULL);
-# endif
-#endif
- value += random_time_bits ^ __getpid ();
-
- for (count = 0; count < TMP_MAX; value += 7777, ++count)
- {
- uint64_t v = value;
-
- /* 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 = __mkdir (tmpl, S_IRUSR | S_IWUSR | S_IXUSR);
-
- if (fd >= 0)
- {
- __set_errno (save_errno);
- return fd;
- }
- else if (errno != EEXIST)
- return -1;
- }
-
- /* We got out of the loop because we ran out of combinations to try. */
- __set_errno (EEXIST);
- return -1;
-}
+#include "tempname.h"
-/* Generate a unique temporary directory from TEMPLATE.
- The last six characters of TEMPLATE must be "XXXXXX";
+/* Generate a unique temporary directory from XTEMPLATE.
+ The last six characters of XTEMPLATE must be "XXXXXX";
they are replaced with a string that makes the filename unique.
The directory is created, mode 700, and its name is returned.
(This function comes from OpenBSD.) */
char *
-mkdtemp (char *template)
+mkdtemp (char *xtemplate)
{
- if (gen_tempname (template))
+ if (gen_tempname (xtemplate, 0, 0, GT_DIR))
return NULL;
else
- return template;
+ return xtemplate;
}
projects / gnulib.git / blobdiff