1 /* THIS FILE HAS BEEN MODIFIED FROM THE ORIGINAL OPENBSD SOURCE */
2 /* Changes: Removed mktemp */
5 * Copyright (c) 1987, 1993
6 * The Regents of the University of California. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
36 * $OpenBSD: mktemp.c,v 1.16 2002/05/27 18:20:45 millert Exp $
44 #define open binary_open
45 extern int binary_open();
48 static int _gettemp(char *, int *, int, int);
57 return (_gettemp(path, &fd, 0, slen) ? fd : -1);
66 return (_gettemp(path, &fd, 0, 0) ? fd : -1);
73 return(_gettemp(path, (int *)NULL, 1, 0) ? path : (char *)NULL);
77 _gettemp(path, doopen, domkdir, slen)
83 register char *start, *trv, *suffp;
88 if (doopen && domkdir) {
93 for (trv = path; *trv; ++trv)
103 while (trv >= path && *trv == 'X' && pid != 0) {
104 *trv-- = (pid % 10) + '0';
107 while (trv >= path && *trv == 'X') {
110 pid = (arc4random() & 0xffff) % (26+26);
114 c = (pid - 26) + 'a';
120 * check the target directory; if you have six X's and it
121 * doesn't exist this runs for a *very* long time.
123 if (doopen || domkdir) {
129 rval = stat(path, &sbuf);
133 if (!S_ISDIR(sbuf.st_mode)) {
145 open(path, O_CREAT|O_EXCL|O_RDWR, 0600)) >= 0)
149 } else if (domkdir) {
150 if (mkdir(path, 0700) == 0)
154 } else if (lstat(path, &sbuf))
155 return(errno == ENOENT ? 1 : 0);
157 /* tricky little algorithm for backward compatibility */
158 for (trv = start;;) {
168 else if (*trv == 'z') /* inc from z to A */
182 #endif /* !HAVE_MKDTEMP */