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1 | /*- |
2 | * Copyright (c) 1990 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This code is derived from software contributed to Berkeley by | |
6 | * Chris Torek. | |
7 | * | |
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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. | |
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35 | */ |
36 | ||
37 | #if defined(LIBC_SCCS) && !defined(lint) | |
af359dea | 38 | static char sccsid[] = "@(#)tmpfile.c 5.4 (Berkeley) 5/27/91"; |
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39 | #endif /* LIBC_SCCS and not lint */ |
40 | ||
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41 | #include <sys/types.h> |
42 | #include <signal.h> | |
cb631443 | 43 | #include <unistd.h> |
c9be6cfe | 44 | #include <errno.h> |
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45 | #include <stdio.h> |
46 | #include <paths.h> | |
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47 | |
48 | FILE * | |
49 | tmpfile() | |
50 | { | |
96ea859a | 51 | sigset_t set, oset; |
c9be6cfe | 52 | FILE *fp; |
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53 | int fd, sverrno; |
54 | #define TRAILER "tmp.XXXXXX" | |
55 | char buf[sizeof(_PATH_TMP) + sizeof(TRAILER)]; | |
56 | ||
57 | bcopy(_PATH_TMP, buf, sizeof(_PATH_TMP) - 1); | |
58 | bcopy(TRAILER, buf + sizeof(_PATH_TMP) - 1, sizeof(TRAILER)); | |
59 | ||
af359dea | 60 | sigfillset(&set); |
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61 | (void)sigprocmask(SIG_BLOCK, &set, &oset); |
62 | ||
63 | fd = mkstemp(buf); | |
64 | if (fd != -1) | |
65 | (void)unlink(buf); | |
66 | ||
af359dea | 67 | (void)sigprocmask(SIG_SETMASK, &oset, NULL); |
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68 | |
69 | if (fd == -1) | |
af359dea | 70 | return (NULL); |
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71 | |
72 | if (!(fp = fdopen(fd, "w+"))) { | |
73 | sverrno = errno; | |
74 | (void)close(fd); | |
75 | errno = sverrno; | |
af359dea | 76 | return (NULL); |
96ea859a | 77 | } |
af359dea | 78 | return (fp); |
c9be6cfe | 79 | } |