Subversion Repositories shark

Rev

Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 pj 1
/*-
2
 * Copyright (c) 1990, 1993
3
 *      The Regents of the University of California.  All rights reserved.
4
 *
5
 * This code is derived from software contributed to Berkeley by
6
 * Chris Torek.
7
 *
8
 * Redistribution and use in source and binary forms, with or without
9
 * modification, are permitted provided that the following conditions
10
 * are met:
11
 * 1. Redistributions of source code must retain the above copyright
12
 *    notice, this list of conditions and the following disclaimer.
13
 * 2. Redistributions in binary form must reproduce the above copyright
14
 *    notice, this list of conditions and the following disclaimer in the
15
 *    documentation and/or other materials provided with the distribution.
16
 * 3. All advertising materials mentioning features or use of this software
17
 *    must display the following acknowledgement:
18
 *      This product includes software developed by the University of
19
 *      California, Berkeley and its contributors.
20
 * 4. Neither the name of the University nor the names of its contributors
21
 *    may be used to endorse or promote products derived from this software
22
 *    without specific prior written permission.
23
 *
24
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34
 * SUCH DAMAGE.
35
 */
36
 
37
#if defined(LIBC_SCCS) && !defined(lint)
38
static char sccsid[] = "@(#)tmpfile.c   8.1 (Berkeley) 6/4/93";
39
#endif /* LIBC_SCCS and not lint */
40
 
41
#include <sys/types.h>
42
#include <signal.h>
43
#include <unistd.h>
44
#include <errno.h>
45
#include <stdio.h>
46
#include <paths.h>
47
 
48
FILE *
49
tmpfile()
50
{
51
        sigset_t set, oset;
52
        FILE *fp;
53
        int fd, sverrno;
54
#define TRAILER "tmp.XXXXXX"
55
        char buf[sizeof(_PATH_TMP) + sizeof(TRAILER)];
56
 
57
        (void)memcpy(buf, _PATH_TMP, sizeof(_PATH_TMP) - 1);
58
        (void)memcpy(buf + sizeof(_PATH_TMP) - 1, TRAILER, sizeof(TRAILER));
59
 
60
        sigfillset(&set);
61
        (void)sigprocmask(SIG_BLOCK, &set, &oset);
62
 
63
        fd = mkstemp(buf);
64
        if (fd != -1)
65
                (void)unlink(buf);
66
 
67
        (void)sigprocmask(SIG_SETMASK, &oset, NULL);
68
 
69
        if (fd == -1)
70
                return (NULL);
71
 
72
        if ((fp = fdopen(fd, "w+")) == NULL) {
73
                sverrno = errno;
74
                (void)close(fd);
75
                errno = sverrno;
76
                return (NULL);
77
        }
78
        return (fp);
79
}