/* $OpenBSD: tmp.c,v 1.9 2009/10/27 23:59:43 deraadt Exp $ */ /*- * Copyright (c) 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Peter McIlroy. * * 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/param.h> #include <err.h> #include <errno.h> #include <limits.h> #include <signal.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include "sort.h" #include "pathnames.h" #define _NAME_TMP "sort.XXXXXXXXXX" FILE * ftmp(void) { sigset_t set, oset; FILE *fp; int fd; char path[PATH_MAX]; if (tmpdir[0] == '\0') errx(2, "invalid temporary directory: \"\""); (void)snprintf(path, sizeof(path), "%s%s%s", tmpdir, (tmpdir[strlen(tmpdir)-1] != '/') ? "/" : "", _NAME_TMP); sigfillset(&set); (void)sigprocmask(SIG_BLOCK, &set, &oset); if ((fd = mkstemp(path)) < 0) err(2, "%s", path); if (!(fp = fdopen(fd, "w+"))) err(2, "%s", path); (void)unlink(path); (void)sigprocmask(SIG_SETMASK, &oset, NULL); return (fp); }