Update.cvs/libc-ud-970827

1997-08-10 19:17  Philip Blundell  <Philip.Blundell@pobox.com>

	* nss/nss_db/db-XXX.c: Include <db_185.h> not <db.h>.  Somebody
	should update this to use the new db API.
	* nss/nss_db/db-netgrp.c: Likewise.
	* nss/nss_db/db-alias.c: Likewise.
	* db2/Makefile: Makefile for db-2.x in glibc.

1997-08-27 21:20  Ulrich Drepper  <drepper@cygnus.com>

	* csu/Makefile (before-compile): New goal.  Make sure abi-tag.h
	is generated.
	[$(elf)=yes] (asm-CPPFLAGS): Make sure abi-tag.h file can be found.

	* Makeconfig [$(build-omitfp)=yes] (CFLAGS-.o): Add
	-D__USE_STRING_INLINES.
	* string/string.f: Move strnlen optimization after inclusion of
	<bits/string.h>.  Include <bits/string.h> only if __USE_STRING_INLINES
	is defined.
	* sysdeps/generic/memcpy.c: Undef memcpy to allow macro of this name
	in <bits/string.h>.
	* sysdeps/generic/memset.c: Likewise.
	* sysdeps/i386/string.h: i386 optimized string functions.
	* sysdeps/i386/i486string.h: i486+ optimized string functions.

	* Makefile (subdirs): Change db to db2.
	* shlib-versions: Bump libdb verion number to 3.
	* include/db.h: Include from db2 directory.
	* include/db_185.h: New file.
	* sysdeps/i386/Makefile [$(subdirs)=db2] (CPPFLAGS): Add macros
	to provide spinlock information for db2.
	* sysdeps/m68k/m68020/Makefile: New file.  Likewise.
	* sysdeps/sparc/Makefile: New file.  Likewise.
	* sysdeps/unix/sysv/linux/Makefile [$(subdirs)=db2] (CPPFLAGS):
	Add -DHAVE_LLSEEK.
	* db2/config.h: Hand-edited config file for db2 in glibc.
	* db2/compat.h: New file from db-2.3.4.
	* db2/db.h: Likewise.
	* db2/db_185.h: Likewise.
	* db2/db_int.h: Likewise.
	* db2/makedb.c: Likewise.
	* db2/btree/bt_close.c: Likewise.
	* db2/btree/bt_compare.c: Likewise.
	* db2/btree/bt_conv.c: Likewise.
	* db2/btree/bt_cursor.c: Likewise.
	* db2/btree/bt_delete.c: Likewise.
	* db2/btree/bt_open.c: Likewise.
	* db2/btree/bt_page.c: Likewise.
	* db2/btree/bt_put.c: Likewise.
	* db2/btree/bt_rec.c: Likewise.
	* db2/btree/bt_recno.c: Likewise.
	* db2/btree/btree_auto.c: Likewise.
	* db2/btree/bt_rsearch.c: Likewise.
	* db2/btree/bt_search.c: Likewise.
	* db2/btree/bt_split.c: Likewise.
	* db2/btree/bt_stat.c: Likewise.
	* db2/btree/btree.src: Likewise.
	* db2/common/db_appinit.c: Likewise.
	* db2/common/db_err.c: Likewise.
	* db2/common/db_byteorder.c: Likewise.
	* db2/common/db_apprec.c: Likewise.
	* db2/common/db_salloc.c: Likewise.
	* db2/common/db_log2.c: Likewise.
	* db2/common/db_region.c: Likewise.
	* db2/common/db_shash.c: Likewise.
	* db2/db/db.c: Likewise.
	* db2/db/db.src: Likewise.
	* db2/db/db_conv.c: Likewise.
	* db2/db/db_dispatch.c: Likewise.
	* db2/db/db_dup.c: Likewise.
	* db2/db/db_overflow.c: Likewise.
	* db2/db/db_pr.c: Likewise.
	* db2/db/db_rec.c: Likewise.
	* db2/db/db_ret.c: Likewise.
	* db2/db/db_thread.c: Likewise.
	* db2/db/db_auto.c: Likewise.
	* db2/db185/db185.c: Likewise.
	* db2/db185/db185_int.h: Likewise.
	* db2/dbm/dbm.c: Likewise.
	* db2/hash/hash.c: Likewise.
	* db2/hash/hash.src: Likewise.
	* db2/hash/hash_page.c: Likewise.
	* db2/hash/hash_conv.c: Likewise.
	* db2/hash/hash_debug.c: Likewise.
	* db2/hash/hash_stat.c: Likewise.
	* db2/hash/hash_rec.c: Likewise.
	* db2/hash/hash_dup.c: Likewise.
	* db2/hash/hash_func.c: Likewise.
	* db2/hash/hash_auto.c: Likewise.
	* db2/include/mp.h: Likewise.
	* db2/include/btree.h: Likewise.
	* db2/include/db.h.src: Likewise.
	* db2/include/db_int.h.src: Likewise.
	* db2/include/db_shash.h: Likewise.
	* db2/include/db_swap.h: Likewise.
	* db2/include/db_185.h.src: Likewise.
	* db2/include/txn.h: Likewise.
	* db2/include/db_am.h: Likewise.
	* db2/include/shqueue.h: Likewise.
	* db2/include/hash.h: Likewise.
	* db2/include/db_dispatch.h: Likewise.
	* db2/include/lock.h: Likewise.
	* db2/include/db_page.h: Likewise.
	* db2/include/log.h: Likewise.
	* db2/include/db_auto.h: Likewise.
	* db2/include/btree_auto.h: Likewise.
	* db2/include/hash_auto.h: Likewise.
	* db2/include/log_auto.h: Likewise.
	* db2/include/txn_auto.h: Likewise.
	* db2/include/db_ext.h: Likewise.
	* db2/include/btree_ext.h: Likewise.
	* db2/include/clib_ext.h: Likewise.
	* db2/include/common_ext.h: Likewise.
	* db2/include/hash_ext.h: Likewise.
	* db2/include/lock_ext.h: Likewise.
	* db2/include/log_ext.h: Likewise.
	* db2/include/mp_ext.h: Likewise.
	* db2/include/mutex_ext.h: Likewise.
	* db2/include/os_ext.h: Likewise.
	* db2/include/txn_ext.h: Likewise.
	* db2/include/cxx_int.h: Likewise.
	* db2/include/db_cxx.h: Likewise.
	* db2/include/queue.h: Likewise.
	* db2/lock/lock.c: Likewise.
	* db2/lock/lock_conflict.c: Likewise.
	* db2/lock/lock_util.c: Likewise.
	* db2/lock/lock_deadlock.c: Likewise.
	* db2/log/log.c: Likewise.
	* db2/log/log_get.c: Likewise.
	* db2/log/log.src: Likewise.
	* db2/log/log_compare.c: Likewise.
	* db2/log/log_put.c: Likewise.
	* db2/log/log_rec.c: Likewise.
	* db2/log/log_archive.c: Likewise.
	* db2/log/log_register.c: Likewise.
	* db2/log/log_auto.c: Likewise.
	* db2/log/log_findckp.c: Likewise.
	* db2/mp/mp_bh.c: Likewise.
	* db2/mp/mp_fget.c: Likewise.
	* db2/mp/mp_fopen.c: Likewise.
	* db2/mp/mp_fput.c: Likewise.
	* db2/mp/mp_fset.c: Likewise.
	* db2/mp/mp_open.c: Likewise.
	* db2/mp/mp_region.c: Likewise.
	* db2/mp/mp_pr.c: Likewise.
	* db2/mp/mp_sync.c: Likewise.
	* db2/mutex/68020.gcc: Likewise.
	* db2/mutex/mutex.c: Likewise.
	* db2/mutex/README: Likewise.
	* db2/mutex/x86.gcc: Likewise.
	* db2/mutex/sparc.gcc: Likewise.
	* db2/mutex/uts4.cc.s: Likewise.
	* db2/mutex/alpha.dec: Likewise.
	* db2/mutex/alpha.gcc: Likewise.
	* db2/mutex/parisc.gcc: Likewise.
	* db2/mutex/parisc.hp: Likewise.
	* db2/os/db_os_abs.c: Likewise.
	* db2/os/db_os_dir.c: Likewise.
	* db2/os/db_os_fid.c: Likewise.
	* db2/os/db_os_lseek.c: Likewise.
	* db2/os/db_os_mmap.c: Likewise.
	* db2/os/db_os_open.c: Likewise.
	* db2/os/db_os_rw.c: Likewise.
	* db2/os/db_os_sleep.c: Likewise.
	* db2/os/db_os_stat.c: Likewise.
	* db2/os/db_os_unlink.c: Likewise.
	* db2/txn/txn.c: Likewise.
	* db2/txn/txn.src: Likewise.
	* db2/txn/txn_rec.c: Likewise.
	* db2/txn/txn_auto.c: Likewise.
	* db2/clib/getlong.c: Likewise.
	* db2/progs/db_archive/db_archive.c: Likewise.
	* db2/progs/db_checkpoint/db_checkpoint.c: Likewise.
	* db2/progs/db_deadlock/db_deadlock.c: Likewise.
	* db2/progs/db_dump/db_dump.c: Likewise.
	* db2/progs/db_dump185/db_dump185.c: Likewise.
	* db2/progs/db_load/db_load.c: Likewise.
	* db2/progs/db_printlog/db_printlog.c: Likewise.
	* db2/progs/db_recover/db_recover.c: Likewise.
	* db2/progs/db_stat/db_stat.c: Likewise.

	* libio/stdio.h [__cplusplus] (__STDIO_INLINE): Define as inline.

	* po/de.po, po/sv.po: Update from 2.0.5 translations.

	* sysdeps/unix/sysv/linux/netinet/tcp.h: Pretty print.

	* sunrpc/rpc/xdr.h (XDR): Don't define argument of x_destroy callback
	as const.
	* sunrpc/xdr_mem.c (xdrmem_destroy): Don't define argument as const.
	* sunrpx/xdr_rec.c (xdrrec_destroy): Likewise.
	* sunrpx/xdr_stdio.c (xdrstdio_destroy): Likewise.

1997-08-27 18:47  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/if_index.c: Include <errno.h>.
	Reported by Benjamin Kosnik <bkoz@cygnus.com>.

1997-08-27 02:27  Roland McGrath  <roland@baalperazim.frob.com>

	* abi-tags: New file.
	* csu/Makefile (distribute): Remove abi-tag.h.
	($(objpfx)abi-tag.h): New target.
	* Makefile (distribute): Add abi-tags.
	* sysdeps/unix/sysv/linux/abi-tag.h: File removed.
	* sysdeps/mach/hurd/abi-tag.h: File removed.
	* sysdeps/stub/abi-tag.h: File removed.

1997-08-25  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/make-syscalls.sh: Change output so that it
	generates compilation rules only for the currently selected object
	suffixes.

1997-08-25  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/dl-machine.h (RTLD_START): Switch back to previous
	section to avoid confusing the compiler.
	* sysdeps/alpha/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/i386/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/mips/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/mips/mips64/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/sparc/sparc32/dl-machine.h (RTLD_START): Likewise.

	* sysdeps/m68k/dl-machine.h (elf_machine_load_address): Use a GOT
	relocation instead of a constant to avoid text relocation.
	(ELF_MACHINE_BEFORE_RTLD_RELOC): Removed.
	(RTLD_START): Declare global labels as functions and add size
	directive.

1997-08-25 17:01  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/i386/bits/select.h: Correct assembler versions to work even
	for descriptors >= 32.

	* stdlib/alloca.h: Don't define alloca to __alloca since if gcc
	is used __alloca is not defined to __builtin_alloca and so might
	not be available.
	Reported by Uwe Ohse <uwe@ohse.de>.

	* sysdeps/unix/sysv/linux/sys/sysmacros.h: Define macros in a special
	way if gcc is not used and so dev_t is an array.
	Reported by Uwe Ohse <uwe@ohse.de>.

1997-08-23  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* manual/libc.texinfo: Reorder chapters to match logical order.

1997-08-25 12:22  Ulrich Drepper  <drepper@cygnus.com>

	* sunrpc/rpc/xdr.h: Change name of parameters in prototypes of
	xdr_reference, xdrmem_create, and xdrstdio_create because of clash
	with g++ internal symbols.
	Patch by Sudish Joseph <sj@eng.mindspring.net>.

	* elf/dl-deps.c: Implement handling of DT_FILTER.

1 files changed, 623 insertions, 0 deletions

diff --git a/db2/db/db_rec.c b/db2/db/db_rec.c
new file mode 100644
index 0000000000..900b0ed579
--- /dev/null
+++ b/db2/db/db_rec.c
@@ -0,0 +1,623 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996, 1997
+ *	Sleepycat Software.  All rights reserved.
+ */
+
+#include "config.h"
+
+#ifndef lint
+static const char sccsid[] = "@(#)db_rec.c	10.8 (Sleepycat) 8/22/97";
+#endif /* not lint */
+
+#ifndef NO_SYSTEM_INCLUDES
+#include <sys/types.h>
+
+#endif
+#include <ctype.h>
+#include <errno.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "db_int.h"
+#include "shqueue.h"
+#include "db_page.h"
+#include "db_dispatch.h"
+#include "log.h"
+#include "hash.h"
+#include "btree.h"
+
+/*
+ * PUBLIC: int __db_addrem_recover
+ * PUBLIC:    __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ *
+ * This log message is generated whenever we add or remove a duplicate
+ * to/from a duplicate page.  On recover, we just do the opposite.
+ */
+int
+__db_addrem_recover(logp, dbtp, lsnp, redo, info)
+	DB_LOG *logp;
+	DBT *dbtp;
+	DB_LSN *lsnp;
+	int redo;
+	void *info;
+{
+	__db_addrem_args *argp;
+	DB *file_dbp, *mdbp;
+	DB_MPOOLFILE *mpf;
+	PAGE *pagep;
+	int change, cmp_n, cmp_p, ret;
+
+	REC_PRINT(__db_addrem_print);
+	REC_INTRO(__db_addrem_read);
+
+	if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) {
+		if (!redo) {
+			/*
+			 * We are undoing and the page doesn't exist.  That
+			 * is equivalent to having a pagelsn of 0, so we
+			 * would not have to undo anything.  In this case,
+			 * don't bother creating a page.
+			 */
+			*lsnp = argp->prev_lsn;
+			ret = 0;
+			goto out;
+		} else
+			if ((ret = memp_fget(mpf,
+			    &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0)
+				goto out;
+	}
+
+	cmp_n = log_compare(lsnp, &LSN(pagep));
+	cmp_p = log_compare(&LSN(pagep), &argp->pagelsn);
+	change = 0;
+	if ((cmp_p == 0 && redo && argp->opcode == DB_ADD_DUP) ||
+	    (cmp_n == 0 && !redo && argp->opcode == DB_REM_DUP)) {
+
+		/* Need to redo an add, or undo a delete. */
+		if ((ret = __db_pitem(file_dbp, pagep, argp->indx, argp->nbytes,
+		    argp->hdr.size == 0 ? NULL : &argp->hdr,
+		    argp->dbt.size == 0 ? NULL : &argp->dbt)) != 0)
+			goto out;
+
+		change = DB_MPOOL_DIRTY;
+
+	} else if ((cmp_n == 0 && !redo && argp->opcode == DB_ADD_DUP) ||
+	    (cmp_p == 0 && redo && argp->opcode == DB_REM_DUP)) {
+		/* Need to undo an add, or redo a delete. */
+		if ((ret = __db_ditem(file_dbp, pagep, argp->indx,
+		    argp->nbytes)) != 0)
+			goto out;
+		change = DB_MPOOL_DIRTY;
+	}
+
+	if (change)
+		if (redo)
+			LSN(pagep) = *lsnp;
+		else
+			LSN(pagep) = argp->pagelsn;
+
+	if ((ret = memp_fput(mpf, pagep, change)) == 0)
+		*lsnp = argp->prev_lsn;
+
+out:	REC_CLOSE;
+}
+
+/*
+ * PUBLIC: int __db_split_recover __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__db_split_recover(logp, dbtp, lsnp, redo, info)
+	DB_LOG *logp;
+	DBT *dbtp;
+	DB_LSN *lsnp;
+	int redo;
+	void *info;
+{
+	__db_split_args *argp;
+	DB *file_dbp, *mdbp;
+	DB_MPOOLFILE *mpf;
+	PAGE *pagep;
+	int change, cmp_n, cmp_p, ret;
+
+	REC_PRINT(__db_split_print);
+	REC_INTRO(__db_split_read);
+
+	if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) {
+		if (!redo) {
+			/*
+			 * We are undoing and the page doesn't exist.  That
+			 * is equivalent to having a pagelsn of 0, so we
+			 * would not have to undo anything.  In this case,
+			 * don't bother creating a page.
+			 */
+			*lsnp = argp->prev_lsn;
+			ret = 0;
+			goto out;
+		} else
+			if ((ret = memp_fget(mpf,
+			    &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0)
+				goto out;
+	}
+
+	/*
+	 * There are two types of log messages here, one for the old page
+	 * and one for the new pages created.  The original image in the
+	 * SPLITOLD record is used for undo.  The image in the SPLITNEW
+	 * is used for redo.  We should never have a case where there is
+	 * a redo operation and the SPLITOLD record is on disk, but not
+	 * the SPLITNEW record.  Therefore, we only redo NEW messages
+	 * and only undo OLD messages.
+	 */
+
+	change = 0;
+	cmp_n = log_compare(lsnp, &LSN(pagep));
+	cmp_p = log_compare(&LSN(pagep), &argp->pagelsn);
+	if (cmp_p == 0 && redo) {
+		if (argp->opcode == DB_SPLITNEW) {
+			/* Need to redo the split described. */
+			memcpy(pagep,
+			    argp->pageimage.data, argp->pageimage.size);
+		}
+		LSN(pagep) = *lsnp;
+		change = DB_MPOOL_DIRTY;
+	} else if (cmp_n == 0 && !redo) {
+		if (argp->opcode == DB_SPLITOLD) {
+			/* Put back the old image. */
+			memcpy(pagep,
+			    argp->pageimage.data, argp->pageimage.size);
+		}
+		LSN(pagep) = argp->pagelsn;
+		change = DB_MPOOL_DIRTY;
+	}
+	if ((ret = memp_fput(mpf, pagep, change)) == 0)
+		*lsnp = argp->prev_lsn;
+
+out:	REC_CLOSE;
+}
+
+/*
+ * PUBLIC: int __db_big_recover __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__db_big_recover(logp, dbtp, lsnp, redo, info)
+	DB_LOG *logp;
+	DBT *dbtp;
+	DB_LSN *lsnp;
+	int redo;
+	void *info;
+{
+	__db_big_args *argp;
+	DB *file_dbp, *mdbp;
+	DB_MPOOLFILE *mpf;
+	PAGE *pagep;
+	int change, cmp_n, cmp_p, ret;
+
+	REC_PRINT(__db_big_print);
+	REC_INTRO(__db_big_read);
+
+	if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) {
+		if (!redo) {
+			/*
+			 * We are undoing and the page doesn't exist.  That
+			 * is equivalent to having a pagelsn of 0, so we
+			 * would not have to undo anything.  In this case,
+			 * don't bother creating a page.
+			 */
+			ret = 0;
+			goto ppage;
+		} else
+			if ((ret = memp_fget(mpf,
+			    &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0)
+			goto out;
+	}
+
+	/*
+	 * There are three pages we need to check.  The one on which we are
+	 * adding data, the previous one whose next_pointer may have
+	 * been updated, and the next one whose prev_pointer may have
+	 * been updated.
+	 */
+	cmp_n = log_compare(lsnp, &LSN(pagep));
+	cmp_p = log_compare(&LSN(pagep), &argp->pagelsn);
+	change = 0;
+	if ((cmp_p == 0 && redo && argp->opcode == DB_ADD_BIG) ||
+	    (cmp_n == 0 && !redo && argp->opcode == DB_REM_BIG)) {
+		/* We are either redo-ing an add, or undoing a delete. */
+		P_INIT(pagep, file_dbp->pgsize, argp->pgno, argp->prev_pgno,
+			argp->next_pgno, 0, P_OVERFLOW);
+		OV_LEN(pagep) = argp->dbt.size;
+		OV_REF(pagep) = 1;
+		memcpy((u_int8_t *)pagep + P_OVERHEAD, argp->dbt.data,
+		    argp->dbt.size);
+		PREV_PGNO(pagep) = argp->prev_pgno;
+		change = DB_MPOOL_DIRTY;
+	} else if ((cmp_n == 0 && !redo && argp->opcode == DB_ADD_BIG) ||
+	    (cmp_p == 0 && redo && argp->opcode == DB_REM_BIG)) {
+		/*
+		 * We are either undo-ing an add or redo-ing a delete.
+		 * The page is about to be reclaimed in either case, so
+		 * there really isn't anything to do here.
+		 */
+		change = DB_MPOOL_DIRTY;
+	}
+	if (change)
+		LSN(pagep) = redo ? *lsnp : argp->pagelsn;
+
+	if ((ret = memp_fput(mpf, pagep, change)) != 0)
+		goto out;
+
+	/* Now check the previous page. */
+ppage:	if (argp->prev_pgno != PGNO_INVALID) {
+		change = 0;
+		if ((ret = memp_fget(mpf, &argp->prev_pgno, 0, &pagep)) != 0)
+			if (!redo) {
+				/*
+				 * We are undoing and the page doesn't exist.
+				 * That is equivalent to having a pagelsn of 0,
+				 * so we would not have to undo anything.  In
+				 * this case, don't bother creating a page.
+				 */
+				*lsnp = argp->prev_lsn;
+				ret = 0;
+				goto npage;
+			} else
+				if ((ret = memp_fget(mpf, &argp->prev_pgno,
+				    DB_MPOOL_CREATE, &pagep)) != 0)
+					goto out;
+
+		cmp_n = log_compare(lsnp, &LSN(pagep));
+		cmp_p = log_compare(&LSN(pagep), &argp->prevlsn);
+
+		if ((cmp_p == 0 && redo && argp->opcode == DB_ADD_BIG) ||
+		    (cmp_n == 0 && !redo && argp->opcode == DB_REM_BIG)) {
+			/* Redo add, undo delete. */
+			NEXT_PGNO(pagep) = argp->pgno;
+			change = DB_MPOOL_DIRTY;
+		} else if ((cmp_n == 0 &&
+		    !redo && argp->opcode == DB_ADD_BIG) ||
+		    (cmp_p == 0 && redo && argp->opcode == DB_REM_BIG)) {
+			/* Redo delete, undo add. */
+			NEXT_PGNO(pagep) = argp->next_pgno;
+			change = DB_MPOOL_DIRTY;
+		}
+		if (change)
+			LSN(pagep) = redo ? *lsnp : argp->prevlsn;
+		if ((ret = memp_fput(mpf, pagep, change)) != 0)
+			goto out;
+	}
+
+	/* Now check the next page.  Can only be set on a delete. */
+npage:	if (argp->next_pgno != PGNO_INVALID) {
+		change = 0;
+		if ((ret = memp_fget(mpf, &argp->next_pgno, 0, &pagep)) != 0)
+			if (!redo) {
+				/*
+				 * We are undoing and the page doesn't exist.
+				 * That is equivalent to having a pagelsn of 0,
+				 * so we would not have to undo anything.  In
+				 * this case, don't bother creating a page.
+				 */
+				*lsnp = argp->prev_lsn;
+				ret = 0;
+				goto out;
+			} else
+				if ((ret = memp_fget(mpf, &argp->next_pgno,
+				    DB_MPOOL_CREATE, &pagep)) != 0)
+					goto out;
+
+		cmp_n = log_compare(lsnp, &LSN(pagep));
+		cmp_p = log_compare(&LSN(pagep), &argp->nextlsn);
+		if (cmp_p == 0 && redo) {
+			PREV_PGNO(pagep) = PGNO_INVALID;
+			change = DB_MPOOL_DIRTY;
+		} else if (cmp_n == 0 && !redo) {
+			PREV_PGNO(pagep) = argp->pgno;
+			change = DB_MPOOL_DIRTY;
+		}
+		if (change)
+			LSN(pagep) = redo ? *lsnp : argp->nextlsn;
+		if ((ret = memp_fput(mpf, pagep, change)) != 0)
+			goto out;
+	}
+
+	*lsnp = argp->prev_lsn;
+
+out:	REC_CLOSE;
+}
+
+/*
+ * __db_ovref_recover --
+ *	Recovery function for __db_ioff().
+ *
+ * PUBLIC: int __db_ovref_recover __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__db_ovref_recover(logp, dbtp, lsnp, redo, info)
+	DB_LOG *logp;
+	DBT *dbtp;
+	DB_LSN *lsnp;
+	int redo;
+	void *info;
+{
+	__db_ovref_args *argp;
+	DB *file_dbp, *mdbp;
+	DB_MPOOLFILE *mpf;
+	PAGE *pagep;
+	int modified, ret;
+
+	REC_PRINT(__db_ovref_print);
+	REC_INTRO(__db_ovref_read);
+
+	if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) {
+		(void)__db_pgerr(file_dbp, argp->pgno);
+		goto out;
+	}
+
+	modified = 0;
+	if (log_compare(lsnp, &argp->lsn) == 0 && redo) {
+		/* Need to redo update described. */
+		++OV_REF(pagep);
+
+		pagep->lsn = *lsnp;
+		modified = 1;
+	} else if (log_compare(lsnp, &LSN(pagep)) == 0 && !redo) {
+		/* Need to undo update described. */
+		--OV_REF(pagep);
+
+		pagep->lsn = argp->lsn;
+		modified = 1;
+	}
+	ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0);
+
+	*lsnp = argp->prev_lsn;
+
+out:	REC_CLOSE;
+}
+
+/*
+ * __db_relink_recover --
+ *	Recovery function for relink.
+ *
+ * PUBLIC: int __db_relink_recover
+ * PUBLIC:   __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__db_relink_recover(logp, dbtp, lsnp, redo, info)
+	DB_LOG *logp;
+	DBT *dbtp;
+	DB_LSN *lsnp;
+	int redo;
+	void *info;
+{
+	__db_relink_args *argp;
+	DB *file_dbp, *mdbp;
+	DB_MPOOLFILE *mpf;
+	PAGE *pagep;
+	int modified, ret;
+
+	REC_PRINT(__db_relink_print);
+	REC_INTRO(__db_relink_read);
+
+	/*
+	 * There are three pages we need to check -- the page, and the
+	 * previous and next pages, if they existed.
+	 */
+	if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) {
+		if (redo) {
+			(void)__db_pgerr(file_dbp, argp->pgno);
+			goto out;
+		}
+		goto next;
+	}
+	modified = 0;
+	if (log_compare(lsnp, &argp->lsn) == 0 && redo) {
+		/* Redo the relink. */
+		pagep->lsn = *lsnp;
+		modified = 1;
+	} else if (log_compare(lsnp, &LSN(pagep)) == 0 && !redo) {
+		/* Undo the relink. */
+		pagep->next_pgno = argp->next;
+		pagep->prev_pgno = argp->prev;
+
+		pagep->lsn = argp->lsn;
+		modified = 1;
+	}
+	if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) {
+		(void)__db_panic(file_dbp);
+		goto out;
+	}
+
+next:	if ((ret = memp_fget(mpf, &argp->next, 0, &pagep)) != 0) {
+		if (redo) {
+			(void)__db_pgerr(file_dbp, argp->next);
+			goto out;
+		}
+		goto prev;
+	}
+	modified = 0;
+	if (log_compare(lsnp, &argp->lsn_next) == 0 && redo) {
+		/* Redo the relink. */
+		pagep->prev_pgno = argp->prev;
+
+		pagep->lsn = *lsnp;
+		modified = 1;
+	} else if (log_compare(lsnp, &LSN(pagep)) == 0 && !redo) {
+		/* Undo the relink. */
+		pagep->prev_pgno = argp->pgno;
+
+		pagep->lsn = argp->lsn_next;
+		modified = 1;
+	}
+	if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) {
+		(void)__db_panic(file_dbp);
+		goto out;
+	}
+
+prev:	if ((ret = memp_fget(mpf, &argp->prev, 0, &pagep)) != 0) {
+		if (redo) {
+			(void)__db_pgerr(file_dbp, argp->prev);
+			goto out;
+		}
+		goto done;
+	}
+	modified = 0;
+	if (log_compare(lsnp, &argp->lsn_prev) == 0 && redo) {
+		/* Redo the relink. */
+		pagep->next_pgno = argp->next;
+
+		pagep->lsn = *lsnp;
+		modified = 1;
+	} else if (log_compare(lsnp, &LSN(pagep)) == 0 && !redo) {
+		/* Undo the relink. */
+		pagep->next_pgno = argp->pgno;
+
+		pagep->lsn = argp->lsn_prev;
+		modified = 1;
+	}
+	if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) {
+		(void) __db_panic(file_dbp);
+		goto out;
+	}
+
+done:	*lsnp = argp->prev_lsn;
+	ret = 0;
+
+out:	REC_CLOSE;
+}
+
+/*
+ * PUBLIC: int __db_addpage_recover
+ * PUBLIC:    __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__db_addpage_recover(logp, dbtp, lsnp, redo, info)
+	DB_LOG *logp;
+	DBT *dbtp;
+	DB_LSN *lsnp;
+	int redo;
+	void *info;
+{
+	__db_addpage_args *argp;
+	DB *file_dbp, *mdbp;
+	DB_MPOOLFILE *mpf;
+	PAGE *pagep;
+	int change, cmp_n, cmp_p, ret;
+
+	REC_PRINT(__db_addpage_print);
+	REC_INTRO(__db_addpage_read);
+
+	/*
+	 * We need to check two pages: the old one and the new one onto
+	 * which we're going to add duplicates.  Do the old one first.
+	 */
+	if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0)
+		goto out;
+
+	change = 0;
+	cmp_n = log_compare(lsnp, &LSN(pagep));
+	cmp_p = log_compare(&LSN(pagep), &argp->lsn);
+	if (cmp_p == 0 && redo) {
+		NEXT_PGNO(pagep) = argp->nextpgno;
+
+		LSN(pagep) = *lsnp;
+		change = DB_MPOOL_DIRTY;
+	} else if (cmp_n == 0 && !redo) {
+		NEXT_PGNO(pagep) = PGNO_INVALID;
+
+		LSN(pagep) = argp->lsn;
+		change = DB_MPOOL_DIRTY;
+	}
+	if ((ret = memp_fput(mpf, pagep, change)) != 0)
+		goto out;
+
+	if ((ret = memp_fget(mpf, &argp->nextpgno, 0, &pagep)) != 0)
+		if (!redo) {
+			/*
+			 * We are undoing and the page doesn't exist.  That
+			 * is equivalent to having a pagelsn of 0, so we
+			 * would not have to undo anything.  In this case,
+			 * don't bother creating a page.
+			 */
+			ret = 0;
+			goto out;
+		} else
+			if ((ret = memp_fget(mpf,
+			    &argp->nextpgno, DB_MPOOL_CREATE, &pagep)) != 0)
+				goto out;
+
+	change = 0;
+	cmp_n = log_compare(lsnp, &LSN(pagep));
+	cmp_p = log_compare(&LSN(pagep), &argp->nextlsn);
+	if (cmp_p == 0 && redo) {
+		PREV_PGNO(pagep) = argp->pgno;
+
+		LSN(pagep) = *lsnp;
+		change = DB_MPOOL_DIRTY;
+	} else if (cmp_n == 0 && !redo) {
+		PREV_PGNO(pagep) = PGNO_INVALID;
+
+		LSN(pagep) = argp->nextlsn;
+		change = DB_MPOOL_DIRTY;
+	}
+	ret = memp_fput(mpf, pagep, change);
+
+out:	if (ret == 0)
+		*lsnp = argp->prev_lsn;
+	REC_CLOSE;
+}
+
+/*
+ * __db_debug_recover --
+ *	Recovery function for debug.
+ *
+ * PUBLIC: int __db_debug_recover __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__db_debug_recover(logp, dbtp, lsnp, redo, info)
+	DB_LOG *logp;
+	DBT *dbtp;
+	DB_LSN *lsnp;
+	int redo;
+	void *info;
+{
+	__db_debug_args *argp;
+	int ret;
+
+	REC_PRINT(__db_debug_print);
+	REC_NOOP_INTRO(__db_debug_read);
+
+	*lsnp = argp->prev_lsn;
+	ret = 0;
+
+	REC_NOOP_CLOSE;
+}
+
+/*
+ * __db_noop_recover --
+ *	Recovery function for noop.
+ *
+ * PUBLIC: int __db_noop_recover
+ * PUBLIC:   __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__db_noop_recover(logp, dbtp, lsnp, redo, info)
+	DB_LOG *logp;
+	DBT *dbtp;
+	DB_LSN *lsnp;
+	int redo;
+	void *info;
+{
+	__db_noop_args *argp;
+	int ret;
+
+	REC_PRINT(__db_noop_print);
+	REC_NOOP_INTRO(__db_noop_read);
+
+	*lsnp = argp->prev_lsn;
+	ret = 0;
+
+	REC_NOOP_CLOSE;
+}