Update.cvs/libc-ud-971201

1997-12-01 17:27  Ulrich Drepper  <drepper@cygnus.com>

	* Makefile (subdirs): Add iconvdata and localedata.

	* iconv/gconv.h: Define UNKNOWN_10646_CHAR as error value.

	* iconv/gconv_conf.c (read_conf_file): Little optimization.

	* iconvdata/8bit-gap.c: New file.
	* iconvdata/8bit-generic.c: Renamed from ...
	* iconvdata/iso8859-generic.c: ...this.
	* iconvdata/configure: Removed.
	* iconvdata/Makefile: Add new modules and better rules.
	* iconvdata/iso6937.c: Minor bug fixes.
	* iconvdata/iso8859-1.c: Likewise.
	* iconvdata/t61.c: Likewise.
	* iconvdata/iso8859-2.c: Change to use 8bit-generic.c.
	Minor bug fixes.
	* iconvdata/iso8859-3.c: Likewise.
	* iconvdata/iso8859-4.c: Likewise.
	* iconvdata/iso8859-5.c: Likewise.
	* iconvdata/iso8859-6.c: Likewise.
	* iconvdata/iso8859-7.c: Likewise.
	* iconvdata/iso8859-8.c: Likewise.
	* iconvdata/iso8859-9.c: Likewise.
	* iconvdata/iso8859-10.c: Likewise.
	* iconvdata/ebcdic-at-de-a.c: New file.
	* iconvdata/ebcdic-at-de.c: New file.
	* iconvdata/ebcdic-ca-fr.c: New file.
	* iconvdata/hp-roman8.c: New file.
	* iconvdata/koi-8.c: New file.
	* iconvdata/koi8-r.c: New file.
	* iconvdata/koi8-h.c: New file.
	* iconvdata/latin-greek-1.c: New file.
	* iconvdata/latin-greek-1.h: New file.
	* iconvdata/latin-greek.c: New file.
	* iconvdata/latin-greek.h: New file.
	* iconvdata/jis0201.c: New file.
	* iconvdata/jis0201.h: New file.
	* iconvdata/jis0208.c: New file.
	* iconvdata/jis0208.h: New file.
	* iconvdata/jis0212.c: New file.
	* iconvdata/jis0212.h: New file.
	* iconvdata/sjis.c: New file.
	* iconvdata/gap.pl: New file.  Script to generate table header.
	* iconvdata/gaptab.pl: New file.
	* iconvdata/gconv-modules: Add info about new modules.

	* locale/programs/charmap.c: Also examine alias names given in charmap
	files.

	* localedata/*: Add to here from add-on.  We need the information
	to generate tables for iconv.

	Update from db-2.3.14.
	* db2/Makefile: Updated.
	* db2/config.h: Likewise.
	* db2/db.h: Likewise.
	* db2/db_int.h: Likewise.
	* db2/btree/bt_cursor.c: Likewise.
	* db2/btree/bt_delete.c: Likewise.
	* db2/btree/bt_put.c: Likewise.
	* db2/btree/bt_search.c: Likewise.
	* db2/btree/bt_split.c: Likewise.
	* db2/btree/btree_auto.c: Likewise.
	* db2/common/db_appinit.c: Likewise.
	* db2/common/db_apprec.c: Likewise.
	* db2/common/db_err.c: Likewise.
	* db2/common/db_region.c: Likewise.
	* db2/db/db_auto.c: Likewise.
	* db2/db/db_dispatch.c: Likewise.
	* db2/db/db_ret.c: Likewise.
	* db2/dbm/dbm.c: Likewise.
	* db2/hash/hash_auto.c: Likewise.
	* db2/include/btree_ext.h: Likewise.
	* db2/include/common_ext.h: Likewise.
	* db2/include/db.h.src: Likewise.
	* db2/include/db_cxx.h: Likewise.
	* db2/include/db_ext.h: Likewise.
	* db2/include/db_int.h.src: Likewise.
	* db2/include/lock.h: Likewise.
	* db2/include/log.h: Likewise.
	* db2/include/mp.h: Likewise.
	* db2/include/mp_ext.h: Likewise.
	* db2/include/os_ext.h: Likewise.
	* db2/include/os_func.h: Likewise.
	* db2/lock/lock.c: Likewise.
	* db2/lock/lock_deadlock.c: Likewise.
	* db2/log/log.c: Likewise.
	* db2/log/log_archive.c: Likewise.
	* db2/log/log_auto.c: Likewise.
	* db2/log/log_get.c: Likewise.
	* db2/log/log_put.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_pr.c: Likewise.
	* db2/mp/mp_region.c: Likewise.
	* db2/mp/mp_sync.c: Likewise.
	* db2/mutex/README: Likewise.
	* db2/mutex/mutex.c: Likewise.
	* db2/os/os_open.c: Likewise.
	* db2/os/os_func.c: Removed.
	* db2/os/os_config.c: New file.
	* db2/os/os_spin.c: New file.
	* db2/txn/txn.c: Likewise.
	* db2/txn/txn_auto.c: Likewise.

1997-11-30 06:01  Ulrich Drepper  <drepper@cygnus.com>

	* posix/sys/wait.h (__WAIT_INT): Don't use complex version with
	__typeof for C++ since this fails for class members.
	Reported by Neal Becker <neal@ctd.comsat.com>.

1997-11-28 11:21  Zack Weinberg  <zack@rabi.phys.columbia.edu>

	* configure.in: Check for a working makeinfo (3.11 or better).
	* config.make.in: Add MAKEINFO to be substituted.
	* manual/Makefile: Don't update info if makeinfo is too old.

1997-11-30 05:21  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/alpha/setjmp.S: Define _ASM and _SETJMP_H to get definitions.
	* sysdeps/alpha/__longjmp.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/kernel_termios.h: Include <termios.h>
	not <bits/termios.h>.

	* sysdeps/unix/sysv/linux/alpha/syscalls.list: Define syscall as
	__llseek and make llseek and lseek64 weak aliases.
	* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
	Patches by a sun <asun@zoology.washington.edu>.

1997-11-29 19:19  Zack Weinberg  <zack@rabi.phys.columbia.edu>

	* misc/sys/syslog.h: Delete KERNEL preprocessor conditional.
	* sysdeps/unix/sysv/linux/powerpc/bits/termios.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/termios.h: Likewise.
	* misc/sys/syslog.h: Clean up BSD header.

1997-11-29  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/unix/sysv/linux/bits/in.h: Add changes from Linux 2.1.67.

	* sysdeps/libm-ieee754/s_ctan.c (__ctan): Raise invalid exception
	for ctan(+-inf,x).
	* sysdeps/libm-ieee754/s_ctanl.c (__ctanl): Likewise.
	* sysdeps/libm-ieee754/s_ctanf.c (__ctanf): Likewise.

	* math/libm-test.c (csqrt_test): Add tests for cabs, carg, ctan,
	csqrt (-1), ctanh(i*pi/4).

1997-11-26  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/generic/bits/confname.h: Fix comma in enumerator.

1997-11-28 13:28  Philip Blundell  <Philip.Blundell@pobox.com>

	* sysdeps/unix/sysv/linux/net/if_arp.h: Add more ARPHRD_ constants.

1997-11-26  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* wcsmbs/wcrtomb.c (__wcrtomb): Remove unused variable fake.

1997-11-26 21:28  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/posix/getcwd.c (GETCWD_STORYGE_CLASS): Remove definition
	and use.  Define GETCWD_RETURN_TYPE instead and use it.
	* sysdeps/unix/sysv/linux/getcwd.c: Define GETCWD_RETURN_TYPE instead
	of GETCWD_STORYGE_CLASS and put the return type and the
	`internal_function' in the right order for gcc 2.7.2.

1997-11-26  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/unix/sysv/linux/sys/module.h: Remove file.  It's
	incompatible with Linux 2.1.x.  Packages using modules
	(e.g. modutils) should/do provide their own version.  Suggested by
	Richard Henderson.

	* sysdeps/unix/sysv/linux/Dist: Remove sys/module.h.

	* sysdeps/unix/sysv/linux/Makefile (sysdep_headers)
	[$(subdir)=socket]: Remove sys/module.h.

	* libio/stdio.h: Correct comment of sys_nerr/sys_errlist.

9 files changed, 319 insertions, 257 deletions

diff --git a/db2/mp/mp_bh.c b/db2/mp/mp_bh.c
index a707603eec..578abedcb6 100644
--- a/db2/mp/mp_bh.c
+++ b/db2/mp/mp_bh.c
@@ -7,7 +7,7 @@
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)mp_bh.c	10.21 (Sleepycat) 10/25/97";
+static const char sccsid[] = "@(#)mp_bh.c	10.23 (Sleepycat) 11/26/97";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -40,7 +40,6 @@ __memp_bhwrite(dbmp, mfp, bhp, restartp, wrotep)
 	BH *bhp;
 	int *restartp, *wrotep;
 {
-	DBT dbt;
 	DB_MPOOLFILE *dbmfp;
 	DB_MPREG *mpreg;
 
@@ -53,7 +52,7 @@ __memp_bhwrite(dbmp, mfp, bhp, restartp, wrotep)
 	 * Walk the process' DB_MPOOLFILE list and find a file descriptor for
 	 * the file.  We also check that the descriptor is open for writing.
 	 * If we find a descriptor on the file that's not open for writing, we
-	 * try and upgrade it to make it writeable.
+	 * try and upgrade it to make it writeable.  If that fails, we're done.
 	 */
 	LOCKHANDLE(dbmp, dbmp->mutexp);
 	for (dbmfp = TAILQ_FIRST(&dbmp->dbmfq);
@@ -86,18 +85,34 @@ __memp_bhwrite(dbmp, mfp, bhp, restartp, wrotep)
 	}
 
 	/*
-	 * Try and open the file; ignore any error, assume it's a permissions
-	 * problem.
+	 * Try and open the file, attaching to the underlying shared area.
 	 *
 	 * XXX
-	 * There's no negative cache here, so we may repeatedly try and open
-	 * files that we have previously tried (and failed) to open.
+	 * Don't try to attach to temporary files.  There are two problems in
+	 * trying to do that.  First, if we have different privileges than the
+	 * process that "owns" the temporary file, we might create the backing
+	 * disk file such that the owning process couldn't read/write its own
+	 * buffers, e.g., memp_trickle() running as root creating a file owned
+	 * as root, mode 600.  Second, if the temporary file has already been
+	 * created, we don't have any way of finding out what its real name is,
+	 * and, even if we did, it was already unlinked (so that it won't be
+	 * left if the process dies horribly).  This decision causes a problem,
+	 * however: if the temporary file consumes the entire buffer cache,
+	 * and the owner doesn't flush the buffers to disk, we could end up
+	 * with resource starvation, and the memp_trickle() thread couldn't do
+	 * anything about it.  That's a pretty unlikely scenario, though.
+	 *
+	 * XXX
+	 * There's no negative cache, so we may repeatedly try and open files
+	 * that we have previously tried (and failed) to open.
+	 *
+	 * Ignore any error, assume it's a permissions problem.
 	 */
-	dbt.size = mfp->pgcookie_len;
-	dbt.data = R_ADDR(dbmp, mfp->pgcookie_off);
-	if (__memp_fopen(dbmp, R_ADDR(dbmp, mfp->path_off),
-	    mfp->ftype, 0, 0, mfp->stat.st_pagesize,
-	    mfp->lsn_off, &dbt, R_ADDR(dbmp, mfp->fileid_off), 0, &dbmfp) != 0)
+	if (F_ISSET(mfp, MP_TEMP))
+		return (0);
+
+	if (__memp_fopen(dbmp, mfp, R_ADDR(dbmp, mfp->path_off), mfp->ftype,
+	    0, 0, mfp->stat.st_pagesize, 0, NULL, NULL, 0, &dbmfp) != 0)
 		return (0);
 
 found:	return (__memp_pgwrite(dbmfp, bhp, restartp, wrotep));
@@ -144,7 +159,7 @@ __memp_pgread(dbmfp, bhp, can_create)
 			UNLOCKHANDLE(dbmp, dbmfp->mutexp);
 			__db_err(dbmp->dbenv,
 			    "%s: page %lu doesn't exist, create flag not set",
-			    dbmfp->path, (u_long)bhp->pgno);
+			    __memp_fn(dbmfp), (u_long)bhp->pgno);
 			goto err;
 		}
 		UNLOCKHANDLE(dbmp, dbmfp->mutexp);
@@ -270,12 +285,14 @@ __memp_pgwrite(dbmfp, bhp, restartp, wrotep)
 
 	/* Temporary files may not yet have been created. */
 	LOCKHANDLE(dbmp, dbmfp->mutexp);
-	if (dbmfp->fd == -1 && ((ret = __db_appname(dbenv, DB_APP_TMP,
-	    NULL, NULL, &dbmfp->fd, NULL)) != 0 || dbmfp->fd == -1)) {
-		UNLOCKHANDLE(dbmp, dbmfp->mutexp);
-		__db_err(dbenv, "unable to create temporary backing file");
-		goto err;
-	}
+	if (dbmfp->fd == -1)
+		if ((ret = __db_appname(dbenv, DB_APP_TMP,
+		    NULL, NULL, &dbmfp->fd, NULL)) != 0 || dbmfp->fd == -1) {
+			UNLOCKHANDLE(dbmp, dbmfp->mutexp);
+			__db_err(dbenv,
+			    "unable to create temporary backing file");
+			goto err;
+		}
 
 	/* Write the page out. */
 	if ((ret = __db_seek(dbmfp->fd, pagesize, bhp->pgno, 0, SEEK_SET)) != 0)
@@ -350,8 +367,8 @@ __memp_pgwrite(dbmfp, bhp, restartp, wrotep)
 
 	return (0);
 
-syserr:	__db_err(dbenv,
-	    "%s: %s failed for page %lu", dbmfp->path, fail, (u_long)bhp->pgno);
+syserr:	__db_err(dbenv, "%s: %s failed for page %lu",
+	    __memp_fn(dbmfp), fail, (u_long)bhp->pgno);
 
 err:	UNLOCKBUFFER(dbmp, bhp);
 	LOCKREGION(dbmp);
@@ -416,7 +433,7 @@ __memp_pg(dbmfp, bhp, is_pgin)
 
 err:	UNLOCKHANDLE(dbmp, dbmp->mutexp);
 	__db_err(dbmp->dbenv, "%s: %s failed for page %lu",
-	    dbmfp->path, is_pgin ? "pgin" : "pgout", (u_long)bhp->pgno);
+	    __memp_fn(dbmfp), is_pgin ? "pgin" : "pgout", (u_long)bhp->pgno);
 	return (ret);
 }
 
@@ -462,7 +479,8 @@ __memp_upgrade(dbmp, dbmfp, mfp)
 	DB_MPOOLFILE *dbmfp;
 	MPOOLFILE *mfp;
 {
-	int fd;
+	int fd, ret;
+	char *rpath;
 
 	/*
 	 * !!!
@@ -477,16 +495,24 @@ __memp_upgrade(dbmp, dbmfp, mfp)
 	if (F_ISSET(dbmfp, MP_UPGRADE_FAIL))
 		return (1);
 
-	/* Try the open. */
-	if (__db_open(R_ADDR(dbmp, mfp->path_off), 0, 0, 0, &fd) != 0) {
+	/*
+	 * Calculate the real name for this file and try to open it read/write.
+	 * We know we have a valid pathname for the file because it's the only
+	 * way we could have gotten a file descriptor of any kind.
+	 */
+	if ((ret = __db_appname(dbmp->dbenv, DB_APP_DATA,
+	    NULL, R_ADDR(dbmp, mfp->path_off), NULL, &rpath)) != 0)
+		return (ret);
+	if (__db_open(rpath, 0, 0, 0, &fd) != 0) {
 		F_SET(dbmfp, MP_UPGRADE_FAIL);
-		return (1);
+		ret = 1;
+	} else {
+		/* Swap the descriptors and set the upgrade flag. */
+		(void)__db_close(dbmfp->fd);
+		dbmfp->fd = fd;
+		F_SET(dbmfp, MP_UPGRADE);
+		ret = 0;
 	}
-
-	/* Swap the descriptors and set the upgrade flag. */
-	(void)__db_close(dbmfp->fd);
-	dbmfp->fd = fd;
-	F_SET(dbmfp, MP_UPGRADE);
-
-	return (0);
+	FREES(rpath);
+	return (ret);
 }
diff --git a/db2/mp/mp_fget.c b/db2/mp/mp_fget.c
index 3f99e60505..1010751c92 100644
--- a/db2/mp/mp_fget.c
+++ b/db2/mp/mp_fget.c
@@ -7,7 +7,7 @@
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)mp_fget.c	10.30 (Sleepycat) 10/25/97";
+static const char sccsid[] = "@(#)mp_fget.c	10.32 (Sleepycat) 11/26/97";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -38,13 +38,11 @@ memp_fget(dbmfp, pgnoaddr, flags, addrp)
 	int flags;
 	void *addrp;
 {
-	BH *bhp, *tbhp;
+	BH *bhp;
 	DB_MPOOL *dbmp;
 	MPOOL *mp;
 	MPOOLFILE *mfp;
-	db_pgno_t lastpgno;
 	size_t bucket, mf_offset;
-	off_t size;
 	u_long cnt;
 	int b_incr, b_inserted, readonly_alloc, ret;
 	void *addr;
@@ -97,7 +95,7 @@ memp_fget(dbmfp, pgnoaddr, flags, addrp)
 	mf_offset = R_OFFSET(dbmp, mfp);
 	addr = NULL;
 	bhp = NULL;
-	b_incr = b_inserted = readonly_alloc = ret = 0;
+	b_incr = b_inserted = ret = 0;
 
 	LOCKREGION(dbmp);
 
@@ -114,11 +112,10 @@ memp_fget(dbmfp, pgnoaddr, flags, addrp)
 	 * It would be possible to do so by reference counting the open
 	 * pages from the mmap, but it's unclear to me that it's worth it.
 	 */
-	if (dbmfp->addr != NULL && dbmfp->mfp->can_mmap) {
-		lastpgno = dbmfp->len == 0 ?
-		    0 : (dbmfp->len - 1) / mfp->stat.st_pagesize;
+	if (dbmfp->addr != NULL && F_ISSET(dbmfp->mfp, MP_CAN_MMAP)) {
+		readonly_alloc = 0;
 		if (LF_ISSET(DB_MPOOL_LAST))
-			*pgnoaddr = lastpgno;
+			*pgnoaddr = mfp->last_pgno;
 		else {
 			/*
 			 * !!!
@@ -128,10 +125,10 @@ memp_fget(dbmfp, pgnoaddr, flags, addrp)
 			 */
 			if (LF_ISSET(DB_MPOOL_CREATE | DB_MPOOL_NEW))
 				readonly_alloc = 1;
-			else if (*pgnoaddr > lastpgno) {
+			else if (*pgnoaddr > mfp->last_pgno) {
 				__db_err(dbmp->dbenv,
 				    "%s: page %lu doesn't exist",
-				    dbmfp->path, (u_long)*pgnoaddr);
+				    __memp_fn(dbmfp), (u_long)*pgnoaddr);
 				ret = EINVAL;
 				goto err;
 			}
@@ -146,79 +143,38 @@ memp_fget(dbmfp, pgnoaddr, flags, addrp)
 		}
 	}
 
-	/*
-	 * If requesting the last page or a new page, find the last page.  The
-	 * tricky thing is that the user may have created a page already that's
-	 * after any page that exists in the file.
-	 */
-	if (LF_ISSET(DB_MPOOL_LAST | DB_MPOOL_NEW)) {
-		/*
-		 * Temporary files may not yet have been created.
-		 *
-		 * Don't lock -- there are no atomicity issues for stat(2).
-		 */
-		if (dbmfp->fd == -1)
-			size = 0;
-		else if ((ret =
-		    __db_ioinfo(dbmfp->path, dbmfp->fd, &size, NULL)) != 0) {
-			__db_err(dbmp->dbenv,
-			    "%s: %s", dbmfp->path, strerror(ret));
-			goto err;
-		}
-
-		*pgnoaddr = size == 0 ? 0 : (size - 1) / mfp->stat.st_pagesize;
+	/* Check if requesting the last page or a new page. */
+	if (LF_ISSET(DB_MPOOL_LAST))
+		*pgnoaddr = mfp->last_pgno;
 
-		/*
-		 * Walk the list of BH's, looking for later pages.  Save the
-		 * pointer if a later page is found so that we don't have to
-		 * search the list twice.
-		 *
-		 * If requesting a new page, return the page one after the last
-		 * page -- which we'll have to create.
-		 */
-		for (tbhp = SH_TAILQ_FIRST(&mp->bhq, __bh);
-		    tbhp != NULL; tbhp = SH_TAILQ_NEXT(tbhp, q, __bh))
-			if (tbhp->pgno >= *pgnoaddr &&
-			    tbhp->mf_offset == mf_offset) {
-				bhp = tbhp;
-				*pgnoaddr = bhp->pgno;
-			}
-		if (LF_ISSET(DB_MPOOL_NEW))
-			++*pgnoaddr;
-	}
-
-	/* If we already found the right buffer, return it. */
-	if (LF_ISSET(DB_MPOOL_LAST) && bhp != NULL) {
-		addr = bhp->buf;
-		goto found;
+	if (LF_ISSET(DB_MPOOL_NEW)) {
+		*pgnoaddr = mfp->last_pgno + 1;
+		goto alloc;
 	}
 
-	/* If we haven't checked the BH hash bucket queue, do the search. */
-	if (!LF_ISSET(DB_MPOOL_LAST | DB_MPOOL_NEW)) {
-		bucket = BUCKET(mp, mf_offset, *pgnoaddr);
-		for (cnt = 0,
-		    bhp = SH_TAILQ_FIRST(&dbmp->htab[bucket], __bh);
-		    bhp != NULL; bhp = SH_TAILQ_NEXT(bhp, hq, __bh)) {
-			++cnt;
-			if (bhp->pgno == *pgnoaddr &&
-			    bhp->mf_offset == mf_offset) {
-				addr = bhp->buf;
-				++mp->stat.st_hash_searches;
-				if (cnt > mp->stat.st_hash_longest)
-					mp->stat.st_hash_longest = cnt;
-				mp->stat.st_hash_examined += cnt;
-				goto found;
-			}
-		}
-		if (cnt != 0) {
+	/* Check the BH hash bucket queue. */
+	bucket = BUCKET(mp, mf_offset, *pgnoaddr);
+	for (cnt = 0,
+	    bhp = SH_TAILQ_FIRST(&dbmp->htab[bucket], __bh);
+	    bhp != NULL; bhp = SH_TAILQ_NEXT(bhp, hq, __bh)) {
+		++cnt;
+		if (bhp->pgno == *pgnoaddr && bhp->mf_offset == mf_offset) {
+			addr = bhp->buf;
 			++mp->stat.st_hash_searches;
 			if (cnt > mp->stat.st_hash_longest)
 				mp->stat.st_hash_longest = cnt;
 			mp->stat.st_hash_examined += cnt;
+			goto found;
 		}
 	}
+	if (cnt != 0) {
+		++mp->stat.st_hash_searches;
+		if (cnt > mp->stat.st_hash_longest)
+			mp->stat.st_hash_longest = cnt;
+		mp->stat.st_hash_examined += cnt;
+	}
 
-	/*
+alloc:	/*
 	 * Allocate a new buffer header and data space, and mark the contents
 	 * as useless.
 	 */
@@ -300,7 +256,7 @@ found:		/* Increment the reference count. */
 		if (bhp->ref == UINT16_T_MAX) {
 			__db_err(dbmp->dbenv,
 			    "%s: too many references to page %lu",
-			    dbmfp->path, bhp->pgno);
+			    __memp_fn(dbmfp), bhp->pgno);
 			ret = EINVAL;
 			goto err;
 		}
@@ -346,6 +302,14 @@ found:		/* Increment the reference count. */
 		++mfp->stat.st_cache_hit;
 	}
 
+	/*
+	 * If we're returning a page after our current notion of the last-page,
+	 * update our information.  Note, there's no way to un-instantiate this
+	 * page, it's going to exist whether it's returned to us dirty or not.
+	 */
+	if (bhp->pgno > mfp->last_pgno)
+		mfp->last_pgno = bhp->pgno;
+
 mapret:	LOCKHANDLE(dbmp, dbmfp->mutexp);
 	++dbmfp->pinref;
 	UNLOCKHANDLE(dbmp, dbmfp->mutexp);
diff --git a/db2/mp/mp_fopen.c b/db2/mp/mp_fopen.c
index de59c9ea9b..bdc4713863 100644
--- a/db2/mp/mp_fopen.c
+++ b/db2/mp/mp_fopen.c
@@ -7,7 +7,7 @@
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)mp_fopen.c	10.30 (Sleepycat) 10/25/97";
+static const char sccsid[] = "@(#)mp_fopen.c	10.32 (Sleepycat) 11/26/97";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -28,8 +28,8 @@ static const char sccsid[] = "@(#)mp_fopen.c	10.30 (Sleepycat) 10/25/97";
 #include "common_ext.h"
 
 static int __memp_mf_close __P((DB_MPOOL *, DB_MPOOLFILE *));
-static int __memp_mf_open __P((DB_MPOOL *,
-    DB_MPOOLFILE *, int, size_t, int, DBT *, u_int8_t *, int, MPOOLFILE **));
+static int __memp_mf_open __P((DB_MPOOL *, DB_MPOOLFILE *,
+    const char *, int, size_t, off_t, int, DBT *, u_int8_t *, MPOOLFILE **));
 
 /*
  * memp_fopen --
@@ -53,7 +53,13 @@ memp_fopen(dbmp, path, ftype,
 	    "memp_fopen", flags, DB_CREATE | DB_NOMMAP | DB_RDONLY)) != 0)
 		return (ret);
 
-	return (__memp_fopen(dbmp, path, ftype,
+	/* Require a non-zero pagesize. */
+	if (pagesize == 0) {
+		__db_err(dbmp->dbenv, "memp_fopen: pagesize not specified");
+		return (EINVAL);
+	}
+
+	return (__memp_fopen(dbmp, NULL, path, ftype,
 	    flags, mode, pagesize, lsn_offset, pgcookie, fileid, 1, retp));
 }
 
@@ -61,13 +67,14 @@ memp_fopen(dbmp, path, ftype,
  * __memp_fopen --
  *	Open a backing file for the memory pool; internal version.
  *
- * PUBLIC: int __memp_fopen __P((DB_MPOOL *, const char *, int, int,
- * PUBLIC:    int, size_t, int, DBT *, u_int8_t *, int, DB_MPOOLFILE **));
+ * PUBLIC: int __memp_fopen __P((DB_MPOOL *, MPOOLFILE *, const char *, int,
+ * PUBLIC:    int, int, size_t, int, DBT *, u_int8_t *, int, DB_MPOOLFILE **));
  */
 int
-__memp_fopen(dbmp, path,
+__memp_fopen(dbmp, mfp, path,
     ftype, flags, mode, pagesize, lsn_offset, pgcookie, fileid, needlock, retp)
 	DB_MPOOL *dbmp;
+	MPOOLFILE *mfp;
 	const char *path;
 	int ftype, flags, mode, lsn_offset, needlock;
 	size_t pagesize;
@@ -77,24 +84,27 @@ __memp_fopen(dbmp, path,
 {
 	DB_ENV *dbenv;
 	DB_MPOOLFILE *dbmfp;
-	MPOOLFILE *mfp;
 	off_t size;
 	int ret;
+	u_int8_t idbuf[DB_FILE_ID_LEN];
+	char *rpath;
 
+	/*
+	 * XXX
+	 * If mfp is provided, the following arguments do NOT need to be
+	 * specified:
+	 *      lsn_offset
+	 *      pgcookie
+	 *      fileid
+	 */
 	dbenv = dbmp->dbenv;
 	ret = 0;
-
-	/* Require a non-zero pagesize. */
-	if (pagesize == 0) {
-		__db_err(dbenv, "memp_fopen: pagesize not specified");
-		return (EINVAL);
-	}
+	rpath = NULL;
 
 	/* Allocate and initialize the per-process structure. */
 	if ((dbmfp =
 	    (DB_MPOOLFILE *)__db_calloc(1, sizeof(DB_MPOOLFILE))) == NULL) {
-		__db_err(dbenv, "%s: %s",
-		    path == NULL ? TEMPORARY : path, strerror(ENOMEM));
+		__db_err(dbenv, "memp_fopen: %s", strerror(ENOMEM));
 		return (ENOMEM);
 	}
 	dbmfp->dbmp = dbmp;
@@ -109,54 +119,66 @@ __memp_fopen(dbmp, path,
 			ret = EINVAL;
 			goto err;
 		}
-		dbmfp->path = (char *)TEMPORARY;
-		F_SET(dbmfp, MP_PATH_TEMP);
+		size = 0;
 	} else {
-		/* Calculate the real name for this file. */
+		/* Get the real name for this file and open it. */
 		if ((ret = __db_appname(dbenv,
-		    DB_APP_DATA, NULL, path, NULL, &dbmfp->path)) != 0)
+		    DB_APP_DATA, NULL, path, NULL, &rpath)) != 0)
 			goto err;
-		F_SET(dbmfp, MP_PATH_ALLOC);
-
-
-		/* Open the file. */
-		if ((ret = __db_open(dbmfp->path,
+		if ((ret = __db_open(rpath,
 		    LF_ISSET(DB_CREATE | DB_RDONLY), DB_CREATE | DB_RDONLY,
 		    mode, &dbmfp->fd)) != 0) {
-			__db_err(dbenv, "%s: %s", dbmfp->path, strerror(ret));
+			__db_err(dbenv, "%s: %s", rpath, strerror(ret));
 			goto err;
 		}
 
 		/* Don't permit files that aren't a multiple of the pagesize. */
-		if ((ret =
-		    __db_ioinfo(dbmfp->path, dbmfp->fd, &size, NULL)) != 0) {
-			__db_err(dbenv, "%s: %s", dbmfp->path, strerror(ret));
+		if ((ret = __db_ioinfo(rpath, dbmfp->fd, &size, NULL)) != 0) {
+			__db_err(dbenv, "%s: %s", rpath, strerror(ret));
 			goto err;
 		}
 		if (size % pagesize) {
 			__db_err(dbenv,
 			    "%s: file size not a multiple of the pagesize",
-			    dbmfp->path);
+			    rpath);
 			ret = EINVAL;
 			goto err;
 		}
+
+		/*
+		 * Get the file id if we weren't given one.  Generated file id's
+		 * don't use timestamps, otherwise there'd be no chance of any
+		 * other process joining the party.
+		 */
+		if (mfp == NULL && fileid == NULL) {
+			if ((ret = __db_fileid(dbenv, rpath, 0, idbuf)) != 0)
+				goto err;
+			fileid = idbuf;
+		}
 	}
 
 	/*
-	 * Find/allocate the shared file objects.  This includes allocating
-	 * space for the per-process thread lock.
+	 * If we weren't provided an underlying shared object to join with,
+	 * find/allocate the shared file objects.  Also allocate space for
+	 * for the per-process thread lock.
 	 */
 	if (needlock)
 		LOCKREGION(dbmp);
-	ret = __memp_mf_open(dbmp, dbmfp, ftype, pagesize,
-	    lsn_offset, pgcookie, fileid, F_ISSET(dbmfp, MP_PATH_TEMP), &mfp);
+
+	if (mfp == NULL)
+		ret = __memp_mf_open(dbmp, dbmfp, path,
+		    ftype, pagesize, size, lsn_offset, pgcookie, fileid, &mfp);
+	else {
+		++mfp->ref;
+		ret = 0;
+	}
 	if (ret == 0 &&
 	    F_ISSET(dbmp, MP_LOCKHANDLE) && (ret =
 	    __memp_ralloc(dbmp, sizeof(db_mutex_t), NULL, &dbmfp->mutexp)) == 0)<