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Add support for dumping and restoring project ids for regular files
and directories. This is done in a backwards compatible way --
restores from old IRIX dumps will restore the correct project id,
and restores from old Linux dumps will restore a 0 for the project
id.

Fix a bug on IRIX where the first two bytes of bs_pad1 in a bstat_t
were not being zeroed before being dumped. Document this fact since
it might affect the ability to use them in the future.

xfsrestore on IRIX was not restoring any extended inode flags for
directories. This is now fixed. Change setdirattr() to do only one
path_to_handle/open_by_handle sequence when restoring directory
attributes. Previously this was being done twice on Linux -- once
for setting the DMAPI event mask and once for the extended inode
flags.

/*
 * Copyright (c) 2000-2001 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef DIRATTR_H
#define DIRATTR_H

/* dah_t - handle to registered directory attributes
 * a special handle is reserved for the caller's convenience,
 * to indicate no directory attributes have been registered.
 */
typedef size32_t dah_t;
#define	DAH_NULL	SIZE32MAX


/* dirattr_init - creates the directory attributes registry.
 * resync indicates if an existing context should be re-opened.
 * returns FALSE if an error encountered. if NOT resync,
 * dircnt hints at number of directories to expect.
 */
extern bool_t dirattr_init( char *housekeepingdir,
			    bool_t resync,
			    u_int64_t dircnt );


/* dirattr_cleanup - removes all traces
 */
extern void dirattr_cleanup( void );


/* dirattr_add - registers a directory's attributes. knows how to interpret
 * the filehdr. returns handle for use with dirattr_get_...().
 */
extern dah_t dirattr_add( filehdr_t *fhdrp );

/* dirattr_update - modifies existing registered attributes
 */
extern void dirattr_update( dah_t dah, filehdr_t *fhdrp );

/* dirattr_del - frees dirattr no longer needed
 */
extern void dirattr_del( dah_t dah );

/* dirattr_get_... - retrieve various attributes
 */
mode_t dirattr_get_mode( dah_t dah );
uid_t dirattr_get_uid( dah_t dah );
gid_t dirattr_get_gid( dah_t dah );
time32_t dirattr_get_atime( dah_t dah );
time32_t dirattr_get_mtime( dah_t dah );
time32_t dirattr_get_ctime( dah_t dah );
u_int32_t dirattr_get_xflags( dah_t dah );
u_int32_t dirattr_get_extsize( dah_t dah );
u_int32_t dirattr_get_projid( dah_t dah );
u_int32_t dirattr_get_dmevmask( dah_t dah );
u_int32_t dirattr_get_dmstate( dah_t dah );

/* dirattr_addextattr - record an extended attribute. second argument is
 * ptr to extattrhdr_t, with extattr name and value appended as
 * described by hdr.
 */
extern void dirattr_addextattr( dah_t dah, extattrhdr_t *ahdrp );

/* dirattr_cb_extattr - calls back for every extended attribute associated with
 * the given dah. stops iteration and returnd FALSE if cbfunc returns FALSE,
 * else returns TRUE.
 */
extern bool_t dirattr_cb_extattr( dah_t dah,
				  bool_t ( * cbfunc )( extattrhdr_t *ahdrp,
						       void *ctxp ),
				  extattrhdr_t *ahdrp,
				  void *ctxp );

#endif /* DIRATTR_H */