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extattr.c revision 1.1 
      1 /*	$NetBSD: extattr.c,v 1.1 2005/01/02 16:43:26 thorpej 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 1.1 2005/01/02 16:43:26 thorpej Exp $");
     36 #endif /* LIBC_SCCS and not lint */
     37 
     38 #include <sys/types.h>
     39 #include <sys/extattr.h>
     40 
     41 #include <errno.h>
     42 #include <string.h>
     43 
     44 int
     45 extattr_namespace_to_string(int attrnamespace, char **string)
     46 {
     47 
     48 	switch(attrnamespace) {
     49 	case EXTATTR_NAMESPACE_USER:
     50 		if (string != NULL) {
     51 			if ((*string =
     52 			     strdup(EXTATTR_NAMESPACE_USER_STRING)) == NULL)
     53 				return (-1);
     54 		}
     55 		return (0);
     56 
     57 	case EXTATTR_NAMESPACE_SYSTEM:
     58 		if (string != NULL)
     59 			if ((*string =
     60 			     strdup(EXTATTR_NAMESPACE_SYSTEM_STRING)) == NULL)
     61 				return (-1);
     62 		return (0);
     63 
     64 	default:
     65 		errno = EINVAL;
     66 		return (-1);
     67 	}
     68 }
     69 
     70 int
     71 extattr_string_to_namespace(const char *string, int *attrnamespace)
     72 {
     73 
     74 	if (strcmp(string, EXTATTR_NAMESPACE_USER_STRING) == 0) {
     75 		if (attrnamespace != NULL)
     76 			*attrnamespace = EXTATTR_NAMESPACE_USER;
     77 		return (0);
     78 	} else if (strcmp(string, EXTATTR_NAMESPACE_SYSTEM_STRING) == 0) {
     79 		if (attrnamespace != NULL)
     80 			*attrnamespace = EXTATTR_NAMESPACE_SYSTEM;
     81 		return (0);
     82 	} else {
     83 		errno = EINVAL;
     84 		return (-1);
     85 	}
     86 }
     87