tempnam.c revision 1.1 1 1.1 cgd /*
2 1.1 cgd * Copyright (c) 1988 Regents of the University of California.
3 1.1 cgd * All rights reserved.
4 1.1 cgd *
5 1.1 cgd * Redistribution and use in source and binary forms, with or without
6 1.1 cgd * modification, are permitted provided that the following conditions
7 1.1 cgd * are met:
8 1.1 cgd * 1. Redistributions of source code must retain the above copyright
9 1.1 cgd * notice, this list of conditions and the following disclaimer.
10 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright
11 1.1 cgd * notice, this list of conditions and the following disclaimer in the
12 1.1 cgd * documentation and/or other materials provided with the distribution.
13 1.1 cgd * 3. All advertising materials mentioning features or use of this software
14 1.1 cgd * must display the following acknowledgement:
15 1.1 cgd * This product includes software developed by the University of
16 1.1 cgd * California, Berkeley and its contributors.
17 1.1 cgd * 4. Neither the name of the University nor the names of its contributors
18 1.1 cgd * may be used to endorse or promote products derived from this software
19 1.1 cgd * without specific prior written permission.
20 1.1 cgd *
21 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 1.1 cgd * SUCH DAMAGE.
32 1.1 cgd */
33 1.1 cgd
34 1.1 cgd #if defined(LIBC_SCCS) && !defined(lint)
35 1.1 cgd static char sccsid[] = "@(#)tempnam.c 5.1 (Berkeley) 2/22/91";
36 1.1 cgd #endif /* LIBC_SCCS and not lint */
37 1.1 cgd
38 1.1 cgd #include <sys/param.h>
39 1.1 cgd #include <errno.h>
40 1.1 cgd #include <stdio.h>
41 1.1 cgd #include <stdlib.h>
42 1.1 cgd #include <unistd.h>
43 1.1 cgd #include <paths.h>
44 1.1 cgd
45 1.1 cgd char *
46 1.1 cgd tempnam(dir, pfx)
47 1.1 cgd const char *dir, *pfx;
48 1.1 cgd {
49 1.1 cgd int sverrno;
50 1.1 cgd char *f, *name;
51 1.1 cgd
52 1.1 cgd if (!(name = malloc(MAXPATHLEN)))
53 1.1 cgd return(NULL);
54 1.1 cgd
55 1.1 cgd if (!pfx)
56 1.1 cgd pfx = "tmp.";
57 1.1 cgd
58 1.1 cgd if (f = getenv("TMPDIR")) {
59 1.1 cgd (void)snprintf(name, MAXPATHLEN, "%s/%sXXXXXX", f, pfx);
60 1.1 cgd if (f = mktemp(name))
61 1.1 cgd return(f);
62 1.1 cgd }
63 1.1 cgd
64 1.1 cgd if (f = (char *)dir) {
65 1.1 cgd (void)snprintf(name, MAXPATHLEN, "%s/%sXXXXXX", f, pfx);
66 1.1 cgd if (f = mktemp(name))
67 1.1 cgd return(f);
68 1.1 cgd }
69 1.1 cgd
70 1.1 cgd f = P_tmpdir;
71 1.1 cgd (void)snprintf(name, MAXPATHLEN, "%s/%sXXXXXX", f, pfx);
72 1.1 cgd if (f = mktemp(name))
73 1.1 cgd return(f);
74 1.1 cgd
75 1.1 cgd f = _PATH_TMP;
76 1.1 cgd (void)snprintf(name, MAXPATHLEN, "%s/%sXXXXXX", f, pfx);
77 1.1 cgd if (f = mktemp(name))
78 1.1 cgd return(f);
79 1.1 cgd
80 1.1 cgd sverrno = errno;
81 1.1 cgd free(name);
82 1.1 cgd errno = sverrno;
83 1.1 cgd return(NULL);
84 1.1 cgd }
85