Merge branch master
[unleashed.git] / lib / libuutil / uu_open.c
blob7256662e38f6dfd39c1c4e841bf5327fc12ce843
1 /*
2 * CDDL HEADER START
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.
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.
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]
20 * CDDL HEADER END
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
27 #pragma ident "%Z%%M% %I% %E% SMI"
29 #include "libuutil_common.h"
31 #include <sys/time.h>
33 #include <errno.h>
34 #include <fcntl.h>
35 #include <limits.h>
36 #include <stdio.h>
37 #include <unistd.h>
39 #ifdef _LP64
40 #define TMPPATHFMT "%s/uu%ld"
41 #else /* _LP64 */
42 #define TMPPATHFMT "%s/uu%lld"
43 #endif /* _LP64 */
45 /*ARGSUSED*/
46 int
47 uu_open_tmp(const char *dir, uint_t uflags)
49 int f;
50 char *fname = uu_zalloc(PATH_MAX);
52 if (fname == NULL)
53 return (-1);
55 for (;;) {
56 (void) snprintf(fname, PATH_MAX, "%s/uu%lld", dir, gethrtime());
58 f = open(fname, O_CREAT | O_EXCL | O_RDWR, 0600);
60 if (f >= 0 || errno != EEXIST)
61 break;
64 if (f >= 0)
65 (void) unlink(fname);
67 uu_free(fname);
69 return (f);