xref: /freebsd/lib/libc/posix1e/extattr.c (revision d51048c93b51a6811343d87d9db9c771a4496347)
11bc2362eSRobert Watson /*-
21bc2362eSRobert Watson  * Copyright (c) 2001 Robert N. M. Watson
31bc2362eSRobert Watson  * All rights reserved.
41bc2362eSRobert Watson  *
51bc2362eSRobert Watson  * Redistribution and use in source and binary forms, with or without
61bc2362eSRobert Watson  * modification, are permitted provided that the following conditions
71bc2362eSRobert Watson  * are met:
81bc2362eSRobert Watson  * 1. Redistributions of source code must retain the above copyright
91bc2362eSRobert Watson  *    notice, this list of conditions and the following disclaimer.
101bc2362eSRobert Watson  * 2. Redistributions in binary form must reproduce the above copyright
111bc2362eSRobert Watson  *    notice, this list of conditions and the following disclaimer in the
121bc2362eSRobert Watson  *    documentation and/or other materials provided with the distribution.
131bc2362eSRobert Watson  *
141bc2362eSRobert Watson  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
151bc2362eSRobert Watson  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
161bc2362eSRobert Watson  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
171bc2362eSRobert Watson  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
181bc2362eSRobert Watson  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
191bc2362eSRobert Watson  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
201bc2362eSRobert Watson  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
211bc2362eSRobert Watson  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
221bc2362eSRobert Watson  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
231bc2362eSRobert Watson  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
241bc2362eSRobert Watson  * SUCH DAMAGE.
251bc2362eSRobert Watson  *
261bc2362eSRobert Watson  * $FreeBSD$
271bc2362eSRobert Watson  */
281bc2362eSRobert Watson /*
291bc2362eSRobert Watson  * TrustedBSD: Utility functions for extended attributes.
301bc2362eSRobert Watson  */
311bc2362eSRobert Watson 
321bc2362eSRobert Watson #include <sys/types.h>
331bc2362eSRobert Watson #include <sys/extattr.h>
341bc2362eSRobert Watson 
351bc2362eSRobert Watson #include <errno.h>
361bc2362eSRobert Watson #include <string.h>
371bc2362eSRobert Watson 
381bc2362eSRobert Watson int
39d51048c9SRobert Watson extattr_namespace_to_string(int attrnamespace, char **string)
401bc2362eSRobert Watson {
411bc2362eSRobert Watson 
42d51048c9SRobert Watson 	switch(attrnamespace) {
431bc2362eSRobert Watson 	case EXTATTR_NAMESPACE_USER:
441bc2362eSRobert Watson 		if (*string != NULL)
451bc2362eSRobert Watson 			*string = strdup(EXTATTR_NAMESPACE_USER_STRING);
461bc2362eSRobert Watson 		return (0);
471bc2362eSRobert Watson 
481bc2362eSRobert Watson 	case EXTATTR_NAMESPACE_SYSTEM:
491bc2362eSRobert Watson 		if (*string != NULL)
501bc2362eSRobert Watson 			*string = strdup(EXTATTR_NAMESPACE_SYSTEM_STRING);
511bc2362eSRobert Watson 		return (0);
521bc2362eSRobert Watson 
531bc2362eSRobert Watson 	default:
541bc2362eSRobert Watson 		errno = EINVAL;
551bc2362eSRobert Watson 		return (-1);
561bc2362eSRobert Watson 	}
571bc2362eSRobert Watson }
581bc2362eSRobert Watson 
591bc2362eSRobert Watson int
60d51048c9SRobert Watson extattr_string_to_namespace(const char *string, int *attrnamespace)
611bc2362eSRobert Watson {
621bc2362eSRobert Watson 
631bc2362eSRobert Watson 	if (!strcmp(string, EXTATTR_NAMESPACE_USER_STRING)) {
64d51048c9SRobert Watson 		if (attrnamespace != NULL)
65d51048c9SRobert Watson 			*attrnamespace = EXTATTR_NAMESPACE_USER;
661bc2362eSRobert Watson 		return (0);
671bc2362eSRobert Watson 	} else if (!strcmp(string, EXTATTR_NAMESPACE_SYSTEM_STRING)) {
68d51048c9SRobert Watson 		if (attrnamespace != NULL)
69d51048c9SRobert Watson 			*attrnamespace = EXTATTR_NAMESPACE_SYSTEM;
701bc2362eSRobert Watson 		return (0);
711bc2362eSRobert Watson 	} else {
721bc2362eSRobert Watson 		errno = EINVAL;
731bc2362eSRobert Watson 		return (-1);
741bc2362eSRobert Watson 	}
751bc2362eSRobert Watson }
76