Annotation of prex/usr/lib/libc/stdio/tempnam.c, Revision 1.1.1.1
1.1 nbrk 1: /*
2: * Copyright (c) 1988, 1993
3: * The Regents of the University of California. All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. Neither the name of the University nor the names of its contributors
14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
30: #include <sys/param.h>
31: #include <errno.h>
32: #include <stdio.h>
33: #include <stdlib.h>
34: #include <string.h>
35: #include <unistd.h>
36: #include <paths.h>
37:
38: char *
39: tempnam(dir, pfx)
40: const char *dir, *pfx;
41: {
42: int sverrno;
43: char *f, *name;
44:
45: if (!(name = malloc((size_t)MAXPATHLEN)))
46: return(NULL);
47:
48: if (!pfx)
49: pfx = "tmp.";
50:
51: if ((f = getenv("TMPDIR")) != NULL) {
52: (void)snprintf(name, (size_t)MAXPATHLEN, "%s%s%sXXXXXXXXXX", f,
53: *(f + strlen(f) - 1) == '/'? "": "/", pfx);
54: if ((f = mktemp(name)) != NULL)
55: return(f);
56: }
57:
58: if ((/* LINTED */f = (char *)dir) != NULL) {
59: (void)snprintf(name, (size_t)MAXPATHLEN, "%s%s%sXXXXXXXXXX", f,
60: *(f + strlen(f) - 1) == '/'? "": "/", pfx);
61: if ((f = mktemp(name)) != NULL)
62: return(f);
63: }
64:
65: f = P_tmpdir;
66: (void)snprintf(name, (size_t)MAXPATHLEN, "%s%sXXXXXXXXXX", f, pfx);
67: if ((f = mktemp(name)) != NULL)
68: return(f);
69:
70: f = _PATH_TMP;
71: (void)snprintf(name, (size_t)MAXPATHLEN, "%s%sXXXXXXXXXX", f, pfx);
72: if ((f = mktemp(name)) != NULL)
73: return(f);
74:
75: sverrno = errno;
76: free(name);
77: errno = sverrno;
78: return(NULL);
79: }
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