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/*
* Copyright (c) 2020 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <config.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <string.h>
#include <errno.h>
#include <roken.h>
#ifndef O_APPEND
#define O_APPEND 0
#endif
#ifndef O_CLOEXEC
#define O_CLOEXEC 0
#endif
#ifndef O_SYNC
#define O_SYNC 0
#endif
#ifndef HAVE_MKDTEMP
ROKEN_LIB_FUNCTION char * ROKEN_LIB_CALL
mkdtemp(char *template)
{
size_t len = strlen(template) - 1;
size_t start, i;
pid_t val = getpid();
for (i = 0; i < len && i < 7 && template[len - i] == 'X'; i++) {
template[len] = '0' + val % 10;
val /= 10;
len--;
if (!val)
val = getpid();
}
if (i < 6) {
errno = EINVAL;
return NULL;
}
start = len - i;
do {
if (mkdir(template, 0700) == 0)
return template;
for (i = start + 1; i < len; i++) {
if (++(template[i]) == '9' + 1)
template[i] = 'a';
if (template[i] <= 'z')
break;
template[i] = 'a';
}
} while(1);
}
#endif
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