1 /** @file
2
3 Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
4 This program and the accompanying materials are licensed and made available under
5 the terms and conditions of the BSD License that accompanies this distribution.
6 The full text of the license may be found at
7 http://opensource.org/licenses/bsd-license.
8
9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
11
12 * Copyright (c) 1988, 1993
13 * The Regents of the University of California. All rights reserved.
14 *
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
17 * are met:
18 * 1. Redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer.
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the distribution.
23 * 3. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38
39 tempnam.c 8.1 (Berkeley) 6/4/93
40 NetBSD: tempnam.c,v 1.19 2005/07/27 13:23:07 drochner Exp
41 **/
42 #include <LibConfig.h>
43 #include <sys/EfiCdefs.h>
44
45 #include "namespace.h"
46 #include <sys/param.h>
47 #include <errno.h>
48 #include <stdio.h>
49 #include <stdlib.h>
50 #include <string.h>
51 #include <unistd.h>
52 #include <paths.h>
53 #include "reentrant.h"
54 #include "local.h"
55
56 __warn_references(tempnam,
57 "warning: tempnam() possibly used unsafely, use mkstemp() or mkdtemp()")
58
59 static const char *
trailsl(const char * f)60 trailsl(const char *f)
61 {
62 const char *s = f;
63 while (*s)
64 s++;
65 return (f != s && s[-1] == '/') ? "" : "/";
66 }
67
68 static char *
gentemp(char * name,size_t len,const char * tmp,const char * pfx)69 gentemp(char *name, size_t len, const char *tmp, const char *pfx)
70 {
71 (void)snprintf(name, len, "%s%s%sXXXX", tmp, trailsl(tmp), pfx);
72 return _mktemp(name);
73 }
74
75 char *
tempnam(const char * dir,const char * pfx)76 tempnam(const char *dir, const char *pfx)
77 {
78 int sverrno;
79 char *name, *f;
80 const char *tmp;
81
82 if ((name = malloc((size_t)MAXPATHLEN)) == NULL)
83 return NULL;
84
85 if (!pfx)
86 pfx = "tmp.";
87
88 if ((tmp = getenv("TMPDIR")) != NULL &&
89 (f = gentemp(name, (size_t)MAXPATHLEN, tmp, pfx)) != NULL)
90 return f;
91
92 if (dir != NULL &&
93 (f = gentemp(name, (size_t)MAXPATHLEN, dir, pfx)) != NULL)
94 return f;
95
96 //if ((f = gentemp(name, (size_t)MAXPATHLEN, P_tmpdir, pfx)) != NULL)
97 // return f;
98
99 if ((f = gentemp(name, (size_t)MAXPATHLEN, _PATH_TMP, pfx)) != NULL)
100 return f;
101
102 sverrno = errno;
103 free(name);
104 errno = sverrno;
105 return(NULL);
106 }
107