1 /* Adapted from NetBSB libc by Dieter Baron */
3 /* NetBSD: gettemp.c,v 1.13 2003/12/05 00:57:36 uebayasi Exp */
6 * Copyright (c) 1987, 1993
7 * The Regents of the University of California. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <sys/types.h>
56 _zip_mkstemp(char *path)
60 ret = _creat(_mktemp(path), _S_IREAD|_S_IWRITE);
72 /* To guarantee multiple calls generate unique names even if
73 the file is not created. 676 different possibilities with 7
74 or more X's, 26 with 6 or less. */
75 static char xtra[2] = "aa";
80 /* Move to end of path and count trailing X's. */
81 for (trv = path; *trv; ++trv)
87 /* Use at least one from xtra. Use 2 if more than 6 X's. */
88 if (*(trv - 1) == 'X')
90 if (xcnt > 6 && *(trv - 1) == 'X')
93 /* Set remaining X's to pid digits with 0's to the left. */
94 while (*--trv == 'X') {
95 *trv = (pid % 10) + '0';
99 /* update xtra for next call. */
111 * check the target directory; if you have six X's and it
112 * doesn't exist this runs for a *very* long time.
114 for (start = trv + 1;; --trv) {
119 if (stat(path, &sbuf))
121 if (!S_ISDIR(sbuf.st_mode)) {
131 if ((fd=open(path, O_CREAT|O_EXCL|O_RDWR|O_BINARY, 0600)) >= 0)
136 /* tricky little algorithm for backward compatibility */
137 for (trv = start;;) {
143 if (isdigit((unsigned char)*trv))