tools/llvm: Do not build with symbols
[minix3.git] / lib / libc / stdio / tmpfile.c
bloba62e8f288cb3016c88faa316a535f920b41e5ef8
1 /* $NetBSD: tmpfile.c,v 1.12 2012/03/15 18:22:30 christos Exp $ */
3 /*-
4 * Copyright (c) 1990, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * Chris Torek.
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.
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.
35 #include <sys/cdefs.h>
36 #if defined(LIBC_SCCS) && !defined(lint)
37 #if 0
38 static char sccsid[] = "@(#)tmpfile.c 8.1 (Berkeley) 6/4/93";
39 #else
40 __RCSID("$NetBSD: tmpfile.c,v 1.12 2012/03/15 18:22:30 christos Exp $");
41 #endif
42 #endif /* LIBC_SCCS and not lint */
44 #include "namespace.h"
45 #include <sys/types.h>
46 #include <unistd.h>
47 #include <signal.h>
48 #include <errno.h>
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <string.h>
52 #include <paths.h>
54 FILE *
55 tmpfile(void)
57 sigset_t set, oset;
58 FILE *fp;
59 int fd, sverrno;
60 #define TRAILER "tmp.XXXXXXXXXX"
61 char buf[sizeof(_PATH_TMP) + sizeof(TRAILER)];
63 (void)memcpy(buf, _PATH_TMP, sizeof(_PATH_TMP) - 1);
64 (void)memcpy(buf + sizeof(_PATH_TMP) - 1, TRAILER, sizeof(TRAILER));
66 sigfillset(&set);
67 (void)sigprocmask(SIG_BLOCK, &set, &oset);
69 fd = mkstemp(buf);
70 if (fd != -1)
71 (void)unlink(buf);
73 (void)sigprocmask(SIG_SETMASK, &oset, NULL);
75 if (fd == -1)
76 return NULL;
78 if ((fp = fdopen(fd, "w+")) == NULL) {
79 sverrno = errno;
80 (void)close(fd);
81 errno = sverrno;
82 return NULL;
84 return fp;