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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include "libuutil_common.h"
28
29 #include <sys/time.h>
30
31 #include <errno.h>
32 #include <fcntl.h>
33 #include <limits.h>
34 #include <stdio.h>
35 #include <unistd.h>
36
37 #ifdef _LP64
38 #define TMPPATHFMT "%s/uu%ld"
39 #else /* _LP64 */
40 #define TMPPATHFMT "%s/uu%lld"
41 #endif /* _LP64 */
42
43 /*ARGSUSED*/
44 int
uu_open_tmp(const char * dir,uint_t uflags)45 uu_open_tmp(const char *dir, uint_t uflags)
46 {
47 int f;
48 char *fname = uu_zalloc(PATH_MAX);
49
50 if (fname == NULL)
51 return (-1);
52
53 for (;;) {
54 (void) snprintf(fname, PATH_MAX, "%s/uu%lld", dir, gethrtime());
55
56 f = open(fname, O_CREAT | O_EXCL | O_RDWR, 0600);
57
58 if (f >= 0 || errno != EEXIST)
59 break;
60 }
61
62 if (f >= 0)
63 (void) unlink(fname);
64
65 uu_free(fname);
66
67 return (f);
68 }
69