1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 #include "lint.h"
31 #include "mtlib.h"
32 #include <sys/types.h>
33 #include <stdio.h>
34 #include <string.h>
35 #include <stdlib.h>
36 #include <errno.h>
37 #include <thread.h>
38 #include <synch.h>
39 #include "tsd.h"
40
41 static char seed[] = { 'a', 'a', 'a', '\0' };
42
43 static mutex_t seed_lk = DEFAULTMUTEX;
44
45 char *
tmpnam_r(char * s)46 tmpnam_r(char *s)
47 {
48 char *p = s, *q;
49
50 if (!s)
51 return (NULL);
52
53 (void) strcpy(p, P_tmpdir);
54 lmutex_lock(&seed_lk);
55 (void) strcat(p, seed);
56 (void) strcat(p, "XXXXXX");
57
58 q = seed;
59 while (*q == 'z')
60 *q++ = 'a';
61 if (*q != '\0')
62 ++*q;
63 lmutex_unlock(&seed_lk);
64 (void) mktemp(p);
65 return (p);
66 }
67
68 char *
tmpnam(char * s)69 tmpnam(char *s)
70 {
71 if (s == NULL)
72 s = tsdalloc(_T_TMPNAM, L_tmpnam, NULL);
73 return (tmpnam_r(s));
74 }
75