lib/libc/gen/extattr.c

   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 "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 }