xref: /freebsd/lib/libc/posix1e/extattr.c (revision ae83180158c4c937f170e31eff311b18c0286a93)
1 /*-
2  * Copyright (c) 2001 Robert N. M. Watson
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 /*
27  * TrustedBSD: Utility functions for extended attributes.
28  */
29 
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
32 
33 #include <sys/types.h>
34 #include <sys/extattr.h>
35 
36 #include <errno.h>
37 #include <string.h>
38 
39 int
40 extattr_namespace_to_string(int attrnamespace, char **string)
41 {
42 
43 	switch(attrnamespace) {
44 	case EXTATTR_NAMESPACE_USER:
45 		if (string != NULL)
46 			*string = strdup(EXTATTR_NAMESPACE_USER_STRING);
47 		return (0);
48 
49 	case EXTATTR_NAMESPACE_SYSTEM:
50 		if (string != NULL)
51 			*string = strdup(EXTATTR_NAMESPACE_SYSTEM_STRING);
52 		return (0);
53 
54 	default:
55 		errno = EINVAL;
56 		return (-1);
57 	}
58 }
59 
60 int
61 extattr_string_to_namespace(const char *string, int *attrnamespace)
62 {
63 
64 	if (!strcmp(string, EXTATTR_NAMESPACE_USER_STRING)) {
65 		if (attrnamespace != NULL)
66 			*attrnamespace = EXTATTR_NAMESPACE_USER;
67 		return (0);
68 	} else if (!strcmp(string, EXTATTR_NAMESPACE_SYSTEM_STRING)) {
69 		if (attrnamespace != NULL)
70 			*attrnamespace = EXTATTR_NAMESPACE_SYSTEM;
71 		return (0);
72 	} else {
73 		errno = EINVAL;
74 		return (-1);
75 	}
76 }
77