38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync/** @file
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync Internal function to generate temporary file name for tmpnam.
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync This program and the accompanying materials are licensed and made available
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync under the terms and conditions of the BSD License that accompanies this
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync distribution. The full text of the license may be found at
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync http://opensource.org/licenses/bsd-license.php.
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync Copyright (c) 1987, 1993
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync The Regents of the University of California. All rights reserved.
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync Redistribution and use in source and binary forms, with or without
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync modification, are permitted provided that the following conditions
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync are met:
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync 1. Redistributions of source code must retain the above copyright
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync notice, this list of conditions and the following disclaimer.
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync 2. Redistributions in binary form must reproduce the above copyright
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync notice, this list of conditions and the following disclaimer in the
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync documentation and/or other materials provided with the distribution.
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync 3. Neither the name of the University nor the names of its contributors
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync may be used to endorse or promote products derived from this software
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync without specific prior written permission.
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync SUCH DAMAGE.
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync mktemp.c 8.1 (Berkeley) 6/4/93
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync NetBSD: gettemp.c,v 1.13 2003/12/05 00:57:36 uebayasi Exp
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync**/
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <LibConfig.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#if HAVE_NBTOOL_CONFIG_H
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include "nbtool_config.h"
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#endif
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#if !defined(HAVE_NBTOOL_CONFIG_H) || !defined(HAVE_MKSTEMP) || !defined(HAVE_MKDTEMP)
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <sys/EfiCdefs.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <sys/types.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <sys/stat.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <assert.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <ctype.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <errno.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <fcntl.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <stdio.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <stdlib.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include <unistd.h>
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#if HAVE_NBTOOL_CONFIG_H
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#define GETTEMP gettemp
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#else
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include "reentrant.h"
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#include "local.h"
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#define GETTEMP __gettemp
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#endif
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncint
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsyncGETTEMP(
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync char *path,
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync int *doopen,
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync int domkdir
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync )
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync{
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync char *start, *trv;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync struct stat sbuf;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync /* To guarantee multiple calls generate unique names even if
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync the file is not created. 676 different possibilities with 7
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync or more X's, 26 with 6 or less. */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync static char xtra[] = "aa";
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync int xcnt = 0;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync _DIAGASSERT(path != NULL);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync /* doopen may be NULL */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync /* Move to end of path and count trailing X's. */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync for (trv = path; *trv; ++trv) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (*trv == 'X') {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync xcnt++;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync else {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync xcnt = 0;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync /* Use at least one from xtra. Use 2 if more than 6 X's. */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (*(trv - 1) == 'X')
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync *--trv = xtra[0];
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (xcnt > 6 && *(trv - 1) == 'X')
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync *--trv = xtra[1];
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync /* Set remaining X's to 0's. */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync while (*--trv == 'X') {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync *trv = '0';
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync /* update xtra for next call. */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (xtra[0] != 'z')
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync xtra[0]++;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync else {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync xtra[0] = 'a';
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (xtra[1] != 'z')
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync xtra[1]++;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync else
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync xtra[1] = 'a';
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync /*
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync * check the target directory; if you have six X's and it
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync * doesn't exist this runs for a *very* long time.
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync for (start = trv + 1;; --trv) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (trv <= path)
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync break;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (*trv == '/') {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync *trv = '\0';
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (stat(path, &sbuf))
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync return (0);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (!S_ISDIR(sbuf.st_mode)) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync errno = ENOTDIR;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync return (0);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync *trv = '/';
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync break;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync for (;;) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (doopen) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if ((*doopen =
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync open(path, O_CREAT | O_EXCL | O_RDWR, 0600)) >= 0)
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync return (1);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (errno != EEXIST)
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync return (0);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync } else if (domkdir) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (mkdir(path, 0700) >= 0)
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync return (1);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (errno != EEXIST)
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync return (0);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync } else if (lstat(path, &sbuf))
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync return (errno == ENOENT ? 1 : 0);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync /* tricky little algorithm for backward compatibility */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync for (trv = start;;) {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (!*trv)
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync return (0);
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (*trv == 'z') {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync *trv++ = 'a';
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync else {
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync if (isdigit((unsigned char)*trv))
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync *trv = 'a';
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync else
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync ++*trv;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync break;
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync }
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync /*NOTREACHED*/
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync}
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync#endif /* !HAVE_NBTOOL_CONFIG_H || !HAVE_MKSTEMP || !HAVE_MKDTEMP */
38ae7e4efe803ea78b6499cd05a394db32623e41vboxsync