/*

 * Copyright (c) 2013-2017, Intel Corporation

 *

 * 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 Intel Corporation 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 COPYRIGHT OWNER 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.

 */

#define _POSIX_C_SOURCE 200809L

#include "ptunit_mkfile.h"

#include "intel-pt.h"

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

int ptunit_mkfile(FILE **pfile, char **pfilename, const char *mode)

{

	FILE *file;

	const char *tmpdir;

	const char *tmpfile;

	char template[256], *filename;

	int fd, len;

	tmpfile = "ptunit-tmp-XXXXXX";

	tmpdir = getenv("TMP");

	if (!tmpdir || !tmpdir[0])

		tmpdir = "/tmp";

	len = snprintf(template, sizeof(template), "%s/%s", tmpdir, tmpfile);

	if (len < 0)

		return -pte_not_supported;

	/* We must not truncate the template. */

	if (sizeof(template) <= (size_t) len)

		return -pte_not_supported;

	fd = mkstemp(template);

	if (fd == -1)

		return -pte_not_supported;

	file = fdopen(fd, mode);

	if (!file) {

		close(fd);

		return -pte_not_supported;

	}

	filename = strdup(template);

	if (!filename) {

		fclose(file);

		return -pte_nomem;

	}

	*pfile = file;

	*pfilename = filename;

	return 0;

}