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/*-
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 * Copyright (c) 1990, 1993
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 *        The Regents of the University of California.  All rights reserved.
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 *
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 * This code is derived from software contributed to Berkeley by
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 * Chris Torek.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <signal.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <paths.h>
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FILE *
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tmpfile()
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{
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        sigset_t set, oset;
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        FILE *fp;
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        int fd, sverrno;
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#define        TRAILER        "tmp.XXXXXX"
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        char buf[sizeof(_PATH_TMP) + sizeof(TRAILER)];
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        (void)memcpy(buf, _PATH_TMP, sizeof(_PATH_TMP) - 1);
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        (void)memcpy(buf + sizeof(_PATH_TMP) - 1, TRAILER, sizeof(TRAILER));
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        sigfillset(&set);
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        (void)sigprocmask(SIG_BLOCK, &set, &oset);
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        fd = mkstemp(buf);
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        if (fd != -1)
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                (void)unlink(buf);
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        (void)sigprocmask(SIG_SETMASK, &oset, NULL);
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        if (fd == -1)
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                return (NULL);
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        if ((fp = fdopen(fd, "w+")) == NULL) {
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                sverrno = errno;
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                (void)close(fd);
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                errno = sverrno;
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                return (NULL);
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        }
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        return (fp);
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}