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.
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9 * modification, are permitted provided that the following conditions
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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
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41 #if defined(LIBC_SCCS) && !defined(lint)
42 static char rcsid[] = "$OpenBSD: mktemp.c,v 1.13 1998/06/30 23:03:13 deraadt Exp $";
43 #endif /* LIBC_SCCS and not lint */
46 #define open binary_open
47 extern int binary_open();
50 static int _gettemp(char *, int *, int, int);
59 return (_gettemp(path, &fd, 0, slen) ? fd : -1);
68 return (_gettemp(path, &fd, 0, 0) ? fd : -1);
75 return(_gettemp(path, (int *)NULL, 1, 0) ? path : (char *)NULL);
79 _gettemp(path, doopen, domkdir, slen)
85 register char *start, *trv, *suffp;
89 if (doopen && domkdir) {
94 for (trv = path; *trv; ++trv)
104 while (*trv == 'X' && pid != 0) {
105 *trv-- = (pid % 10) + '0';
108 while (*trv == 'X') {
111 pid = (arc4random() & 0xffff) % (26+26);
115 c = (pid - 26) + 'a';
121 * check the target directory; if you have six X's and it
122 * doesn't exist this runs for a *very* long time.
124 if (doopen || domkdir) {
130 rval = stat(path, &sbuf);
134 if (!S_ISDIR(sbuf.st_mode)) {
146 open(path, O_CREAT|O_EXCL|O_RDWR, 0600)) >= 0)
150 } else if (domkdir) {
151 if (mkdir(path, 0700) == 0)
155 } else if (lstat(path, &sbuf))
156 return(errno == ENOENT ? 1 : 0);
158 /* tricky little algorithm for backward compatibility */
159 for (trv = start;;) {
169 else if (*trv == 'z') /* inc from z to A */
183 #endif /* !HAVE_MKDTEMP */