81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
/* $OpenBSD: tmpfile.c,v 1.10 2005/10/10 12:00:52 espie Exp $ */
|
|
/*-
|
|
* 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 <sys/stat.h>
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <paths.h>
|
|
|
|
FILE *
|
|
tmpfile(void)
|
|
{
|
|
sigset_t set, oset;
|
|
FILE *fp;
|
|
int fd, sverrno;
|
|
#define TRAILER "tmp.XXXXXXXXXX"
|
|
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) {
|
|
mode_t u;
|
|
|
|
(void)unlink(buf);
|
|
u = umask(0);
|
|
(void)umask(u);
|
|
(void)fchmod(fd, 0666 & ~u);
|
|
}
|
|
|
|
(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);
|
|
}
|