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authorUlrich Drepper <drepper@redhat.com>1998-06-09 15:16:55 +0000
committerUlrich Drepper <drepper@redhat.com>1998-06-09 15:16:55 +0000
commitbf7997b65c7887d2acda95f5201d818a19d81711 (patch)
treeda3583de3a0b5892f90a4b1eb773a87b554ae37e /db2/mp/mp_bh.c
parent7646e67e6cc4c738a7b402c60fed39d52db0433b (diff)
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Update.
1998-06-09  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/netinet/ip.h (struct ip_options): Define
	__data member only for gcc.  Reported by ak@muc.de.

	* misc/mntent.h: Undo last patch.
	* sysdeps/unix/sysv/linux/fstatvfs.c (fstatvfs): Undo last patch.
	* misc/tst/mntent.c: Adjust code for this change.

	* io/fts.c: Updated from a slightly more recent BSD version.
	* io/fts.h: Likewise.

	* libc.map: Add __libc_stack_end.

	* db2/Makefile (routines): Add lock_region.
	* db2/config.h: Update from db-2.4.14.
	* db2/db.h: Likewise.
	* db2/db_185.h: Likewise.
	* db2/db_int.h: Likewise.
	* db2/bt_close.c: Likewise.
	* db2/bt_compare.c: Likewise.
	* db2/bt_conv.c: Likewise.
	* db2/bt_cursor.c: Likewise.
	* db2/bt_delete.c: Likewise.
	* db2/bt_open.c: Likewise.
	* db2/bt_page.c: Likewise.
	* db2/bt_put.c: Likewise.
	* db2/bt_rec.c: Likewise.
	* db2/bt_recno.c: Likewise.
	* db2/bt_rsearch.c: Likewise.
	* db2/bt_search.c: Likewise.
	* db2/bt_split.c: Likewise.
	* db2/bt_stat.c: Likewise.
	* db2/btree.src: Likewise.
	* db2/btree_auto.c: Likewise.
	* db2/getlong.c: Likewise.
	* db2/db_appinit.c: Likewise.
	* db2/db_apprec.c: Likewise.
	* db2/db_byteorder.c: Likewise.
	* db2/db_err.c: Likewise.
	* db2/db_log2.c: Likewise.
	* db2/db_region.c: Likewise.
	* db2/db_salloc.c: Likewise.
	* db2/db_shash.c: Likewise.
	* db2/db.c: Likewise.
	* db2/db.src: Likewise.
	* db2/db_auto.c: Likewise.
	* db2/db_conv.c: Likewise.
	* db2/db_dispatch.c: Likewise.
	* db2/db_dup.c: Likewise.
	* db2/db_overflow.c: Likewise.
	* db2/db_pr.c: Likewise.
	* db2/db_rec.c: Likewise.
	* db2/db_ret.c: Likewise.
	* db2/db_thread.c: Likewise.
	* db2/db185.c: Likewise.
	* db2/db185_int.h: Likewise.
	* db2/dbm.c: Likewise.
	* db2/hash.c: Likewise.
	* db2/hash.src: Likewise.
	* db2/hash_auto.c: Likewise.
	* db2/hash_conv.c: Likewise.
	* db2/hash_debug.c: Likewise.
	* db2/hash_dup.c: Likewise.
	* db2/hash_func.c: Likewise.
	* db2/hash_page.c: Likewise.
	* db2/hash_rec.c: Likewise.
	* db2/hash_stat.c: Likewise.
	* db2/btree.h: Likewise.
	* db2/btree_ext.h: Likewise.
	* db2/clib_ext.h: Likewise.
	* db2/common_ext.h: Likewise.
	* db2/cxx_int.h: Likewise.
	* db2/db.h.src: Likewise.
	* db2/db_185.h.src: Likewise.
	* db2/db_am.h: Likewise.
	* db2/db_auto.h: Likewise.
	* db2/db_cxx.h: Likewise.
	* db2/db_dispatch.h: Likewise.
	* db2/db_ext.h: Likewise.
	* db2/db_int.h.src: Likewise.
	* db2/db_page.h: Likewise.
	* db2/db_shash.h: Likewise.
	* db2/db_swap.h: Likewise.
	* db2/hash.h: Likewise.
	* db2/hash_ext.h: Likewise.
	* db2/lock.h: Likewise.
	* db2/lock_ext.h: Likewise.
	* db2/log.h: Likewise.
	* db2/log_ext.h: Likewise.
	* db2/mp.h: Likewise.
	* db2/mp_ext.h: Likewise.
	* db2/mutex_ext.h: Likewise.
	* db2/os_ext.h: Likewise.
	* db2/os_func.h: Likewise.
	* db2/queue.h: Likewise.
	* db2/shqueue.h: Likewise.
	* db2/txn.h: Likewise.
	* db2/lock.c: Likewise.
	* db2/lock_conflict.c: Likewise.
	* db2/lock_deadlock.c: Likewise.
	* db2/lock_region.c: Likewise.
	* db2/lock_util.c: Likewise.
	* db2/log.c: Likewise.
	* db2/log.src: Likewise.
	* db2/log_archive.c: Likewise.
	* db2/log_auto.c: Likewise.
	* db2/log_compare.c: Likewise.
	* db2/log_findckp.c: Likewise.
	* db2/log_get.c: Likewise.
	* db2/log_put.c: Likewise.
	* db2/log_rec.c: Likewise.
	* db2/log_register.c: Likewise.
	* db2/mp_bh.c: Likewise.
	* db2/mp_fget.c: Likewise.
	* db2/mp_fopen.c: Likewise.
	* db2/mp_fput.c: Likewise.
	* db2/mp_fset.c: Likewise.
	* db2/mp_open.c: Likewise.
	* db2/mp_pr.c: Likewise.
	* db2/mp_region.c: Likewise.
	* db2/mp_sync.c: Likewise.
	* db2/68020.gcc: Likewise.
	* db2/mutex.c: Likewise.
	* db2/parisc.gcc: Likewise.
	* db2/parisc.hp: Likewise.
	* db2/sco.cc: Likewise.
	* db2/os_abs.c: Likewise.
	* db2/os_alloc.c: Likewise.
	* db2/os_config.c: Likewise.
	* db2/os_dir.c: Likewise.
	* db2/os_fid.c: Likewise.
	* db2/os_fsync.c: Likewise.
	* db2/os_map.c: Likewise.
	* db2/os_oflags.c: Likewise.
	* db2/os_open.c: Likewise.
	* db2/os_rpath.c: Likewise.
	* db2/os_rw.c: Likewise.
	* db2/os_seek.c: Likewise.
	* db2/os_sleep.c: Likewise.
	* db2/os_spin.c: Likewise.
	* db2/os_stat.c: Likewise.
	* db2/os_unlink.c: Likewise.
	* db2/db_archive.c: Likewise.
	* db2/db_checkpoint.c: Likewise.
	* db2/db_deadlock.c: Likewise.
	* db2/db_dump.c: Likewise.
	* db2/db_dump185.c: Likewise.
	* db2/db_load.c: Likewise.
	* db2/db_printlog.c: Likewise.
	* db2/db_recover.c: Likewise.
	* db2/db_stat.c: Likewise.
	* db2/txn.c: Likewise.
	* db2/txn.src: Likewise.
	* db2/txn_auto.c: Likewise.
	* db2/txn_rec.c: Likewise.

	* elf/rtld.c: Move definition of __libc_stack_end to ...
	* sysdeps/generic/dl-sysdep.h: ...here.

	* sysdeps/unix/sysv/linux/fstatvfs.c: Handle nodiratime option.
	* sysdeps/unix/sysv/linux/bits/statvfs.h: Define ST_NODIRATIME.
	* sysdeps/unix/sysv/linux/sys/mount.h: Define MS_NODIRATIME.

1998-06-08 21:44  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/fstatvfs.c: Handle constant option string
	from mntent correctly.

1998-06-06  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sunrpc/Makefile (generated): Correct typo.

1998-06-04  Philip Blundell  <philb@gnu.org>

	* elf/elf.h (EM_ARM, et al.): New definitions.
	* sysdeps/arm/dl-machine.h: Update for new draft ARM ELF ABI.
Diffstat (limited to 'db2/mp/mp_bh.c')
-rw-r--r--db2/mp/mp_bh.c79
1 files changed, 49 insertions, 30 deletions
diff --git a/db2/mp/mp_bh.c b/db2/mp/mp_bh.c
index c23abdda24..d89f9c2ded 100644
--- a/db2/mp/mp_bh.c
+++ b/db2/mp/mp_bh.c
@@ -1,13 +1,13 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1996, 1997
+ * Copyright (c) 1996, 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)mp_bh.c	10.28 (Sleepycat) 1/8/98";
+static const char sccsid[] = "@(#)mp_bh.c	10.38 (Sleepycat) 5/20/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -59,8 +59,10 @@ __memp_bhwrite(dbmp, mfp, bhp, restartp, wrotep)
 	    dbmfp != NULL; dbmfp = TAILQ_NEXT(dbmfp, q))
 		if (dbmfp->mfp == mfp) {
 			if (F_ISSET(dbmfp, MP_READONLY) &&
-			    __memp_upgrade(dbmp, dbmfp, mfp))
+			    __memp_upgrade(dbmp, dbmfp, mfp)) {
+				UNLOCKHANDLE(dbmp, dbmp->mutexp);
 				return (0);
+			}
 			break;
 		}
 	UNLOCKHANDLE(dbmp, dbmp->mutexp);
@@ -111,8 +113,8 @@ __memp_bhwrite(dbmp, mfp, bhp, restartp, wrotep)
 	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)
+	if (__memp_fopen(dbmp, mfp, R_ADDR(dbmp, mfp->path_off),
+	    0, 0, mfp->stat.st_pagesize, 0, NULL, &dbmfp) != 0)
 		return (0);
 
 found:	return (__memp_pgwrite(dbmfp, bhp, restartp, wrotep));
@@ -152,7 +154,7 @@ __memp_pgread(dbmfp, bhp, can_create)
 	ret = 0;
 	LOCKHANDLE(dbmp, dbmfp->mutexp);
 	if (dbmfp->fd == -1 || (ret =
-	    __db_seek(dbmfp->fd, pagesize, bhp->pgno, 0, SEEK_SET)) != 0) {
+	    __db_seek(dbmfp->fd, pagesize, bhp->pgno, 0, 0, SEEK_SET)) != 0) {
 		if (!can_create) {
 			if (dbmfp->fd == -1)
 				ret = EINVAL;
@@ -164,8 +166,17 @@ __memp_pgread(dbmfp, bhp, can_create)
 		}
 		UNLOCKHANDLE(dbmp, dbmfp->mutexp);
 
-		/* Clear any uninitialized data. */
-		memset(bhp->buf, 0, pagesize);
+		/* Clear the created page. */
+		if (mfp->clear_len == 0)
+			memset(bhp->buf, 0, pagesize);
+		else {
+			memset(bhp->buf, 0, mfp->clear_len);
+#ifdef DIAGNOSTIC
+			memset(bhp->buf + mfp->clear_len,
+			    0xff, pagesize - mfp->clear_len);
+#endif
+		}
+
 		goto pgin;
 	}
 
@@ -186,8 +197,16 @@ __memp_pgread(dbmfp, bhp, can_create)
 			goto err;
 		}
 
-		/* Clear any uninitialized data. */
-		memset(bhp->buf + nr, 0, pagesize - nr);
+		/*
+		 * If we didn't fail until we tried the read, don't clear the
+		 * whole page, it wouldn't be insane for a filesystem to just
+		 * always behave that way.  Else, clear any uninitialized data.
+		 */
+		if (nr == 0)
+			memset(bhp->buf, 0,
+			    mfp->clear_len == 0 ? pagesize : mfp->clear_len);
+		else
+			memset(bhp->buf + nr, 0, pagesize - nr);
 	}
 
 	/* Call any pgin function. */
@@ -308,31 +327,31 @@ __memp_pgwrite(dbmfp, bhp, restartp, wrotep)
 
 	/* Temporary files may not yet have been created. */
 	LOCKHANDLE(dbmp, dbmfp->mutexp);
-	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;
-		}
+	if (dbmfp->fd == -1 &&
+	    ((ret = __db_appname(dbenv, DB_APP_TMP, NULL, NULL,
+	    DB_CREATE | DB_EXCL | DB_TEMPORARY, &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)
+	/*
+	 * Write the page out.
+	 *
+	 * XXX
+	 * Shut the compiler up; it doesn't understand the correlation between
+	 * the failing clauses to __db_lseek and __db_write and this ret != 0.
+	 */
+	COMPQUIET(fail, NULL);
+	if ((ret =
+	    __db_seek(dbmfp->fd, pagesize, bhp->pgno, 0, 0, SEEK_SET)) != 0)
 		fail = "seek";
 	else if ((ret = __db_write(dbmfp->fd, bhp->buf, pagesize, &nw)) != 0)
 		fail = "write";
 	UNLOCKHANDLE(dbmp, dbmfp->mutexp);
-	if (ret != 0) {
-		/*
-		 * XXX
-		 * Shut the compiler up; it doesn't understand the correlation
-		 * between the failing clauses to __db_lseek and __db_write and
-		 * this ret != 0.
-		 */
-		COMPQUIET(fail, NULL);
+	if (ret != 0)
 		goto syserr;
-	}
 
 	if (nw != (ssize_t)pagesize) {
 		ret = EIO;
@@ -548,7 +567,7 @@ __memp_upgrade(dbmp, dbmfp, mfp)
 	 * 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)
+	    NULL, R_ADDR(dbmp, mfp->path_off), 0, NULL, &rpath)) != 0)
 		return (ret);
 	if (__db_open(rpath, 0, 0, 0, &fd) != 0) {
 		F_SET(dbmfp, MP_UPGRADE_FAIL);