Colony » Colony Scout

/*-

 * Copyright (c) 1990, 1993

 *        The Regents of the University of California.  All rights reserved.

 *

 * This code is derived from software contributed to Berkeley by

 * Chris Torek.

 *

 * 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 University 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 REGENTS 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.

 */

#include <sys/types.h>

#include <signal.h>

#include <unistd.h>

#include <errno.h>

#include <stdio.h>

#include <string.h>

#include <paths.h>

FILE *

tmpfile()

{

        sigset_t set, oset;

        FILE *fp;

        int fd, sverrno;

#define        TRAILER        "tmp.XXXXXX"

        char buf[sizeof(_PATH_TMP) + sizeof(TRAILER)];

        (void)memcpy(buf, _PATH_TMP, sizeof(_PATH_TMP) - 1);

        (void)memcpy(buf + sizeof(_PATH_TMP) - 1, TRAILER, sizeof(TRAILER));

        sigfillset(&set);

        (void)sigprocmask(SIG_BLOCK, &set, &oset);

        fd = mkstemp(buf);

        if (fd != -1)

                (void)unlink(buf);

        (void)sigprocmask(SIG_SETMASK, &oset, NULL);

        if (fd == -1)

                return (NULL);

        if ((fp = fdopen(fd, "w+")) == NULL) {

                sverrno = errno;

                (void)close(fd);

                errno = sverrno;

                return (NULL);

        }

        return (fp);

}