xref: /netbsd/lib/libc/gen/extattr.c (revision 6550d01e)
1 /*	$NetBSD: extattr.c,v 1.2 2005/02/09 21:35:46 kleink Exp $	*/
2 
3 /*-
4  * Copyright (c) 2001 Robert N. M. Watson
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 /*
30  * TrustedBSD: Utility functions for extended attributes.
31  */
32 
33 #include <sys/cdefs.h>
34 #if defined(LIBC_SCCS) && !defined(lint)
35 __RCSID("$NetBSD: extattr.c,v 1.2 2005/02/09 21:35:46 kleink Exp $");
36 #endif /* LIBC_SCCS and not lint */
37 
38 #include "namespace.h"
39 #include <sys/types.h>
40 #include <sys/extattr.h>
41 
42 #include <errno.h>
43 #include <string.h>
44 
45 int
46 extattr_namespace_to_string(int attrnamespace, char **string)
47 {
48 
49 	switch(attrnamespace) {
50 	case EXTATTR_NAMESPACE_USER:
51 		if (string != NULL) {
52 			if ((*string =
53 			     strdup(EXTATTR_NAMESPACE_USER_STRING)) == NULL)
54 				return (-1);
55 		}
56 		return (0);
57 
58 	case EXTATTR_NAMESPACE_SYSTEM:
59 		if (string != NULL)
60 			if ((*string =
61 			     strdup(EXTATTR_NAMESPACE_SYSTEM_STRING)) == NULL)
62 				return (-1);
63 		return (0);
64 
65 	default:
66 		errno = EINVAL;
67 		return (-1);
68 	}
69 }
70 
71 int
72 extattr_string_to_namespace(const char *string, int *attrnamespace)
73 {
74 
75 	if (strcmp(string, EXTATTR_NAMESPACE_USER_STRING) == 0) {
76 		if (attrnamespace != NULL)
77 			*attrnamespace = EXTATTR_NAMESPACE_USER;
78 		return (0);
79 	} else if (strcmp(string, EXTATTR_NAMESPACE_SYSTEM_STRING) == 0) {
80 		if (attrnamespace != NULL)
81 			*attrnamespace = EXTATTR_NAMESPACE_SYSTEM;
82 		return (0);
83 	} else {
84 		errno = EINVAL;
85 		return (-1);
86 	}
87 }
88