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83 lines
1.5 KiB
C
83 lines
1.5 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1999-2005
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* Sleepycat Software. All rights reserved.
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*
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* $Id: qam_conv.c,v 12.1 2005/06/16 20:23:32 bostic Exp $
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*/
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#include "db_config.h"
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#ifndef NO_SYSTEM_INCLUDES
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#include <sys/types.h>
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#endif
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#include "db_int.h"
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#include "dbinc/db_page.h"
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#include "dbinc/db_swap.h"
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#include "dbinc/db_am.h"
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#include "dbinc/qam.h"
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/*
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* __qam_mswap --
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* Swap the bytes on the queue metadata page.
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*
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* PUBLIC: int __qam_mswap __P((PAGE *));
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*/
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int
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__qam_mswap(pg)
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PAGE *pg;
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{
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u_int8_t *p;
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__db_metaswap(pg);
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p = (u_int8_t *)pg + sizeof(DBMETA);
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SWAP32(p); /* first_recno */
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SWAP32(p); /* cur_recno */
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SWAP32(p); /* re_len */
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SWAP32(p); /* re_pad */
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SWAP32(p); /* rec_page */
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SWAP32(p); /* page_ext */
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p += 91 * sizeof(u_int32_t); /* unused */
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SWAP32(p); /* crypto_magic */
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return (0);
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}
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/*
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* __qam_pgin_out --
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* Convert host-specific page layout to/from the host-independent format
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* stored on disk.
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* We only need to fix up a few fields in the header
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*
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* PUBLIC: int __qam_pgin_out __P((DB_ENV *, db_pgno_t, void *, DBT *));
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*/
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int
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__qam_pgin_out(dbenv, pg, pp, cookie)
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DB_ENV *dbenv;
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db_pgno_t pg;
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void *pp;
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DBT *cookie;
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{
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DB_PGINFO *pginfo;
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QPAGE *h;
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COMPQUIET(pg, 0);
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COMPQUIET(dbenv, NULL);
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pginfo = (DB_PGINFO *)cookie->data;
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if (!F_ISSET(pginfo, DB_AM_SWAP))
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return (0);
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h = pp;
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if (h->type == P_QAMMETA)
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return (__qam_mswap(pp));
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M_32_SWAP(h->lsn.file);
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M_32_SWAP(h->lsn.offset);
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M_32_SWAP(h->pgno);
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return (0);
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}
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