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Diffstat (limited to 'debian/htdig/htdig-3.2.0b6/db/db_conv.c')
-rw-r--r--debian/htdig/htdig-3.2.0b6/db/db_conv.c342
1 files changed, 342 insertions, 0 deletions
diff --git a/debian/htdig/htdig-3.2.0b6/db/db_conv.c b/debian/htdig/htdig-3.2.0b6/db/db_conv.c
new file mode 100644
index 00000000..b78f8a04
--- /dev/null
+++ b/debian/htdig/htdig-3.2.0b6/db/db_conv.c
@@ -0,0 +1,342 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996, 1997, 1998, 1999
+ * Sleepycat Software. All rights reserved.
+ */
+/*
+ * Copyright (c) 1990, 1993, 1994, 1995, 1996
+ * Keith Bostic. All rights reserved.
+ */
+/*
+ * Copyright (c) 1990, 1993, 1994, 1995
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "db_config.h"
+
+#ifndef lint
+static const char sccsid[] = "@(#)db_conv.c 11.4 (Sleepycat) 11/10/99";
+#endif /* not lint */
+
+#ifndef NO_SYSTEM_INCLUDES
+#include <sys/types.h>
+
+#include <errno.h>
+#include <string.h>
+#endif
+
+#include "db_int.h"
+#include "db_page.h"
+#include "db_swap.h"
+#include "db_am.h"
+#include "btree.h"
+#include "hash.h"
+#include "qam.h"
+
+/*
+ * CDB___db_pgin --
+ * Primary page-swap routine.
+ *
+ * PUBLIC: int CDB___db_pgin __P((db_pgno_t, void *, DBT *));
+ */
+int
+CDB___db_pgin(pg, pp, cookie)
+ db_pgno_t pg;
+ void *pp;
+ DBT *cookie;
+{
+ DB_PGINFO *pginfo;
+
+ pginfo = (DB_PGINFO *)cookie->data;
+
+ switch (((PAGE *)pp)->type) {
+ case P_HASH:
+ case P_HASHMETA:
+ case P_INVALID:
+ return (CDB___ham_pgin(pg, pp, cookie));
+ case P_BTREEMETA:
+ case P_IBTREE:
+ case P_IRECNO:
+ case P_LBTREE:
+ case P_LRECNO:
+ case P_DUPLICATE:
+ case P_OVERFLOW:
+ return (CDB___bam_pgin(pg, pp, cookie));
+ case P_QAMMETA:
+ case P_QAMDATA:
+ return (CDB___qam_pgin_out(pg, pp, cookie));
+ default:
+ break;
+ }
+ return (EINVAL);
+}
+
+/*
+ * CDB___db_pgout --
+ * Primary page-swap routine.
+ *
+ * PUBLIC: int CDB___db_pgout __P((db_pgno_t, void *, DBT *));
+ */
+int
+CDB___db_pgout(pg, pp, cookie)
+ db_pgno_t pg;
+ void *pp;
+ DBT *cookie;
+{
+ DB_PGINFO *pginfo;
+
+ pginfo = (DB_PGINFO *)cookie->data;
+
+ switch (((PAGE *)pp)->type) {
+ case P_HASH:
+ case P_HASHMETA:
+ case P_INVALID:
+ return (CDB___ham_pgout(pg, pp, cookie));
+ case P_BTREEMETA:
+ case P_IBTREE:
+ case P_IRECNO:
+ case P_LBTREE:
+ case P_LRECNO:
+ case P_DUPLICATE:
+ case P_OVERFLOW:
+ return (CDB___bam_pgout(pg, pp, cookie));
+ case P_QAMMETA:
+ case P_QAMDATA:
+ return (CDB___qam_pgin_out(pg, pp, cookie));
+ default:
+ break;
+ }
+ return (EINVAL);
+}
+
+/*
+ * CDB___db_metaswap --
+ * Byteswap the common part of the meta-data page.
+ *
+ * PUBLIC: void CDB___db_metaswap __P((PAGE *));
+ */
+void
+CDB___db_metaswap(pg)
+ PAGE *pg;
+{
+ u_int8_t *p;
+
+ p = (u_int8_t *)pg;
+
+ /* Swap the meta-data information. */
+ SWAP32(p); /* lsn.file */
+ SWAP32(p); /* lsn.offset */
+ SWAP32(p); /* pgno */
+ SWAP32(p); /* magic */
+ SWAP32(p); /* version */
+ SWAP32(p); /* pagesize */
+ p += 4; /* unused, page type, unused, unused */
+ SWAP32(p); /* free */
+ SWAP32(p); /* flags */
+}
+
+/*
+ * CDB___db_byteswap --
+ * Byteswap a page.
+ *
+ * PUBLIC: int CDB___db_byteswap __P((db_pgno_t, PAGE *, size_t, int));
+ */
+int
+CDB___db_byteswap(pg, h, pagesize, pgin)
+ db_pgno_t pg;
+ PAGE *h;
+ size_t pagesize;
+ int pgin;
+{
+ BINTERNAL *bi;
+ BKEYDATA *bk;
+ BOVERFLOW *bo;
+ RINTERNAL *ri;
+ db_indx_t i, len, tmp;
+ u_int8_t *p, *end;
+
+ COMPQUIET(pg, 0);
+
+ if (pgin) {
+ M_32_SWAP(h->lsn.file);
+ M_32_SWAP(h->lsn.offset);
+ M_32_SWAP(h->pgno);
+ M_32_SWAP(h->prev_pgno);
+ M_32_SWAP(h->next_pgno);
+ M_16_SWAP(h->entries);
+ M_16_SWAP(h->hf_offset);
+ }
+
+ switch (h->type) {
+ case P_HASH:
+ for (i = 0; i < NUM_ENT(h); i++) {
+ if (pgin)
+ M_16_SWAP(h->inp[i]);
+
+ switch (HPAGE_TYPE(h, i)) {
+ case H_KEYDATA:
+ break;
+ case H_DUPLICATE:
+ len = LEN_HKEYDATA(h, pagesize, i);
+ p = HKEYDATA_DATA(P_ENTRY(h, i));
+ for (end = p + len; p < end;) {
+ if (pgin) {
+ P_16_SWAP(p);
+ memcpy(&tmp,
+ p, sizeof(db_indx_t));
+ p += sizeof(db_indx_t);
+ } else {
+ memcpy(&tmp,
+ p, sizeof(db_indx_t));
+ SWAP16(p);
+ }
+ p += tmp;
+ SWAP16(p);
+ }
+ break;
+ case H_OFFDUP:
+ p = HOFFPAGE_PGNO(P_ENTRY(h, i));
+ SWAP32(p); /* pgno */
+ break;
+ case H_OFFPAGE:
+ p = HOFFPAGE_PGNO(P_ENTRY(h, i));
+ SWAP32(p); /* pgno */
+ SWAP32(p); /* tlen */
+ break;
+ }
+
+ }
+
+ /*
+ * The offsets in the inp array are used to determine
+ * the size of entries on a page; therefore they
+ * cannot be converted until we've done all the
+ * entries.
+ */
+ if (!pgin)
+ for (i = 0; i < NUM_ENT(h); i++)
+ M_16_SWAP(h->inp[i]);
+ break;
+ case P_LBTREE:
+ case P_LRECNO:
+ case P_DUPLICATE:
+ for (i = 0; i < NUM_ENT(h); i++) {
+ if (pgin)
+ M_16_SWAP(h->inp[i]);
+
+ /*
+ * In the case of on-page duplicates, key information
+ * should only be swapped once.
+ */
+ if (h->type == P_LBTREE && i > 1) {
+ if (pgin) {
+ if (h->inp[i] == h->inp[i - 2])
+ continue;
+ } else {
+ M_16_SWAP(h->inp[i]);
+ if (h->inp[i] == h->inp[i - 2])
+ continue;
+ M_16_SWAP(h->inp[i]);
+ }
+ }
+
+ bk = GET_BKEYDATA(h, i);
+ switch (B_TYPE(bk->type)) {
+ case B_KEYDATA:
+ M_16_SWAP(bk->len);
+ break;
+ case B_DUPLICATE:
+ case B_OVERFLOW:
+ bo = (BOVERFLOW *)bk;
+ M_32_SWAP(bo->pgno);
+ M_32_SWAP(bo->tlen);
+ break;
+ }
+
+ if (!pgin)
+ M_16_SWAP(h->inp[i]);
+ }
+ break;
+ case P_IBTREE:
+ for (i = 0; i < NUM_ENT(h); i++) {
+ if (pgin)
+ M_16_SWAP(h->inp[i]);
+
+ bi = GET_BINTERNAL(h, i);
+ M_16_SWAP(bi->len);
+ M_32_SWAP(bi->pgno);
+ M_32_SWAP(bi->nrecs);
+
+ switch (B_TYPE(bi->type)) {
+ case B_KEYDATA:
+ break;
+ case B_DUPLICATE:
+ case B_OVERFLOW:
+ bo = (BOVERFLOW *)bi->data;
+ M_32_SWAP(bo->pgno);
+ M_32_SWAP(bo->tlen);
+ break;
+ }
+
+ if (!pgin)
+ M_16_SWAP(h->inp[i]);
+ }
+ break;
+ case P_IRECNO:
+ for (i = 0; i < NUM_ENT(h); i++) {
+ if (pgin)
+ M_16_SWAP(h->inp[i]);
+
+ ri = GET_RINTERNAL(h, i);
+ M_32_SWAP(ri->pgno);
+ M_32_SWAP(ri->nrecs);
+
+ if (!pgin)
+ M_16_SWAP(h->inp[i]);
+ }
+ break;
+ case P_OVERFLOW:
+ case P_INVALID:
+ /* Nothing to do. */
+ break;
+ default:
+ return (EINVAL);
+ }
+
+ if (!pgin) {
+ /* Swap the header information. */
+ M_32_SWAP(h->lsn.file);
+ M_32_SWAP(h->lsn.offset);
+ M_32_SWAP(h->pgno);
+ M_32_SWAP(h->prev_pgno);
+ M_32_SWAP(h->next_pgno);
+ M_16_SWAP(h->entries);
+ M_16_SWAP(h->hf_offset);
+ }
+ return (0);
+}
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