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License and email address updates from Andreas.
Merge of xfs-cmds-melb:slinx:20369a by kenmcd.

/* Copy extended attributes between files - default check callback */
 
/* Copyright (C) 2003 Andreas Gruenbacher <agruen@suse.de>, SuSE Linux AG.

  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2 of the License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/

#include <string.h>
#include "error_context.h"

int
attr_copy_check_permissions(const char *name, struct error_context *ctx)
{
	/* Skip POSIX ACLs. */
	if (strncmp(name, "system.posix_acl_", 17) == 0 &&
	    (strcmp(name+17, "access") == 0 ||
	     strcmp(name+17, "default") == 0))
		return 0;

	/* Skip permissions attributes which are used on IRIX, and
	   hence are part of the XFS ondisk format (incl. ACLs). */
	if (strncmp(name, "trusted.SGI_", 12) == 0 &&
	    (strcmp(name+12, "ACL_DEFAULT") == 0 ||
	     strcmp(name+12, "ACL_FILE") == 0 ||
	     strcmp(name+12, "CAP_FILE") == 0 ||
	     strcmp(name+12, "MAC_FILE") == 0))
		return 0;

	/* The xfsroot namespace mirrored attributes, some of which
	   are also also available via the system.* and trusted.*
	   namespaces.  To avoid the problems this would cause,
	   we skip xfsroot altogether.
	   Note: xfsroot namespace has now been removed from XFS. */
	if (strncmp(name, "xfsroot.", 8) == 0)
		return 0;

	return 1;
}