1 /* $OpenBSD: tmp.c,v 1.6 2003/06/10 22:20:51 deraadt Exp $ */
2
3 /*-
4 * Copyright (c) 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Peter McIlroy.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 #ifndef lint
36 #if 0
37 static char sccsid[] = "@(#)tmp.c 8.1 (Berkeley) 6/6/93";
38 #else
39 static char rcsid[] = "$OpenBSD: tmp.c,v 1.6 2003/06/10 22:20:51 deraadt Exp $";
40 #endif
41 #endif /* not lint */
42
43 #include <sys/param.h>
44
45 #include <err.h>
46 #include <errno.h>
47 #include <limits.h>
48 #include <signal.h>
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <string.h>
52 #include <unistd.h>
53
54 #include "sort.h"
55 #include "pathnames.h"
56
57 #define _NAME_TMP "sort.XXXXXXXXXX"
58
59 FILE *
ftmp(void)60 ftmp(void)
61 {
62 sigset_t set, oset;
63 FILE *fp;
64 int fd;
65 char pathb[PATH_MAX], *path;
66
67 path = pathb;
68 (void)snprintf(path, sizeof(pathb), "%s%s%s", tmpdir,
69 (tmpdir[strlen(tmpdir)-1] != '/') ? "/" : "", _NAME_TMP);
70
71 sigfillset(&set);
72 (void)sigprocmask(SIG_BLOCK, &set, &oset);
73 if ((fd = mkstemp(path)) < 0)
74 err(2, "%s", path);
75 if (!(fp = fdopen(fd, "w+")))
76 err(2, "%s", path);
77 (void)unlink(path);
78
79 (void)sigprocmask(SIG_SETMASK, &oset, NULL);
80 return (fp);
81 }
82