/*  mkstemp
librock_CHISEL _summary Correct temporary file creation

Copyright (c) 2001-2002, Forrest J. Cavalier III, doing business as
Mib Software, Saylorsburg Pennsylvania USA

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
    Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.

    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.

    Neither the name of the author 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 COPYRIGHT HOLDERS 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 REGENTS 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.
*/
#ifndef librock_ISOLATED
/**************************************************************/
#define librock_IMPLEMENT_mkstemp


#include <librock/file.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdlib.h>
#include <string.h>
#include <librock/target/fileio.c>
/**************************************************************/
#endif

#ifdef librock_IMPL_LIDESC
#ifndef librock_NOIMPL_LIDESC_mkstemp
/* License description features are documented at
   http://www.mibsoftware.com/librock/                        */
/**************************************************************/
#include <librock/license/librock.lh> /* librock_LIDESC_HC=12440211096131f5976d36be0cddca4cd9152e45 */
void *librock_LIDESC_mkstemp[] = {
    "\n" __FILE__ librock_LIDESC_librock "\n",
    0
};
/**************************************************************/
#endif
#endif

#ifndef librock_WRAP
/* Function wrapping and tracing features are documented at
   http://www.mibsoftware.com/librock/                        */
/**************************************************************/
#define librock_body_mkstemp librock_mkstemp /* For librock_WRAP section */
/**************************************************************/
#endif


#ifndef librock_NOIMPL_mkstemp
/**************************************************************/
int librock_body_mkstemp(char *pszTemplate)
{/* Copyright 1998-2002, Forrest J. Cavalier III d-b-a Mib Software
  Licensed under BSD-ish license, NO WARRANTY. Copies must retain this block.
  License, originals, details: http://www.mibsoftware.com/librock/
*/
#ifdef librock_MANUAL_mkstemp
/*<NAME>
librock_mkstemp - Create a named temporary file.
*/
/*<SYNOPSIS>*/
#include <librock/file.h>

int librock_mkstemp(
    char *pszTemplate);

/*<DESCRIPTION>
Create and open a temporary file, being careful never to clobber
existing files.

This uses mktemp() and open() correctly to avoid a race condition.
(If you do not need the name, consider using tmpfile() instead.)

pszTemplate should end with 'XXXXXX'.  It is modified to be
the filename on successful return.

IMPORTANT: Be sure to strcpy a new template with
each call.  (Follow the example below.)

Typical use is
*/
    char buf[20];
    strcpy(buf,"aaXXXXXX");
    fd = mkstemp(buf);
    if (fd < 0) {
        /* Error! */
    }


/*<USES>
  mktemp()  open()
  malloc()  free() strcpy() strlen()
*/

/*<LICENSE>  Copyright 1998-2002 Forrest J. Cavalier III, http://www.mibsoftware.com
  Licensed under BSD-ish license, NO WARRANTY. Copies must retain this block.
  License text in <librock/license/librock.txt> librock_LIDESC_HC=12440211096131f5976d36be0cddca4cd9152e45
*/
#endif /* MANUAL */

/*<IMPLEMENTATION>-------------------------------------------*/

int fd;
char *path = malloc(strlen(pszTemplate)+1);
if (!path) {
    return -1;
}
do {
    strcpy(path,pszTemplate);
    if (!mktemp(path)) {
        free(path);
        return -1;
    }
    fd = open(path, O_CREAT|O_EXCL|O_RDWR|librock_O_BINARY, 0600);
} while (fd < 0);
strcpy(pszTemplate,path);
free(path);
return fd;
}
/**************************************************************/
#endif /* NOIMP section */

/*
$Log: mkstemp.c,v $
Revision 1.4  2002/08/01 20:18:53  forrest@mibsoftware.com rights=#1
  Moved CVS log to end.
  Changed LIDESC MD5 to HC.

Revision 1.3  2002/04/09 03:41:28  forrest@mibsoftware.com rights=#1
  Updated LICENSE in manual.

Revision 1.2  2002/03/16 22:16:00  forrest@mibsoftware.com rights=#1
  Fixed WRAP section

Revision 1.1  2002/03/16 22:15:12  forrest@mibsoftware.com rights=#1
  Initial


rights#1 Copyright (c) Forrest J Cavalier III d-b-a Mib Software
rights#1 License text in <librock/license/librock.txt> librock_LIDESC_HC=12440211096131f5976d36be0cddca4cd9152e45
*/