about summary refs log tree commit diff
path: root/db2/common/db_region.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>1998-01-25 17:01:47 +0000
committerUlrich Drepper <drepper@redhat.com>1998-01-25 17:01:47 +0000
commitaf69217fea009d28a9dca78796147a05d3cffb01 (patch)
tree98fd27434ad1ae66768530dd28b8bde5721e6c5f /db2/common/db_region.c
parentac9f45cfd18eeffd6a9fbbcc86e68657c95658a6 (diff)
downloadglibc-af69217fea009d28a9dca78796147a05d3cffb01.tar.gz
glibc-af69217fea009d28a9dca78796147a05d3cffb01.tar.xz
glibc-af69217fea009d28a9dca78796147a05d3cffb01.zip
Update.
1998-01-26 00:57  Ulrich Drepper  <drepper@cygnus.com>

	* db2/Makefile (routines): Add os_alloc.
	* db2/db.h: Update from db-2.3.16.
	* db2/db_185.h: Likewise.
	* db2/db_int.h: Likewise.
	* db2/btree/bt_close.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/common/db_appinit.c: Likewise.
	* db2/common/db_apprec.c: Likewise.
	* db2/common/db_err.c: Likewise.
	* db2/common/db_region.c: Likewise.
	* db2/common/db_shash.c: Likewise.
	* db2/db/db.c: Likewise.
	* db2/db/db_auto.c: Likewise.
	* db2/db/db_conv.c: Likewise.
	* db2/db/db_dispatch.c: Likewise.
	* db2/db/db_dup.c: Likewise.
	* db2/db/db_pr.c: Likewise.
	* db2/db/db_rec.c: Likewise.
	* db2/db185/db185.c: Likewise.
	* db2/dbm/dbm.c: Likewise.
	* db2/hash/hash.c: Likewise.
	* db2/hash/hash_auto.c: Likewise.
	* db2/hash/hash_dup.c: Likewise.
	* db2/hash/hash_page.c: Likewise.
	* db2/hash/hash_rec.c: Likewise.
	* db2/include/btree_ext.h: Likewise.
	* db2/include/clib_ext.h: Likewise.
	* db2/include/common_ext.h: Likewise.
	* db2/include/db.h.src: Likewise.
	* db2/include/db_185.h.src: Likewise.
	* db2/include/db_am.h: Likewise.
	* db2/include/db_ext.h: Likewise.
	* db2/include/db_int.h.src: Likewise.
	* db2/include/hash_ext.h: Likewise.
	* db2/include/lock_ext.h: Likewise.
	* db2/include/log.h: Likewise.
	* db2/include/log_auto.h: Likewise.
	* db2/include/log_ext.h: Likewise.
	* db2/include/mp.h: Likewise.
	* db2/include/mp_ext.h: Likewise.
	* db2/include/mutex_ext.h: Likewise.
	* db2/include/os_ext.h: Likewise.
	* db2/include/os_func.h: Likewise.
	* db2/include/txn_ext.h: Likewise.
	* db2/lock/lock.c: Likewise.
	* db2/lock/lock_util.c: Likewise.
	* db2/log/log.c: Likewise.
	* db2/log/log.src: 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/log/log_rec.c: Likewise.
	* db2/log/log_register.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_pr.c: Likewise.
	* db2/mp/mp_sync.c: Likewise.
	* db2/mutex/mutex.c: Likewise.
	* db2/os/os_alloc.c: Likewise.
	* db2/os/os_config.c: Likewise.
	* db2/os/os_stat.c: Likewise.
	* db2/progs/db_checkpoint/db_checkpoint.c: Likewise.
	* db2/progs/db_deadlock/db_deadlock.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.
	* db2/txn/txn.c: Likewise.

	* elf/dl-close.c (_dl_close): Rename inner variable named map to imap.
	Unmap memory blocks in reverse order of allocation.
	Call munmap with load address added to offset.
	Bug reported by Miguel de Icaza.

	* locale/programs/ld-collate.c (collate_end_weight): Correctly fill
	up weight array.

	* localedata/locales/cs_CZ: Update by Michael Mraka
	<michael@informatics.muni.cz>.

	* misc/sys/syslog.h: Reformat a bit.  Don't declare vsyslog unless
	__USE_BSD.

	* nis/nss_compat/compat-grp.c: Correctly handle buffer overflow while
	reading line with fgets.
	* nis/nss_compat/compat-pwd.c: Likewise.
	* nis/nss_compat/compat-spwd.c: Likewise.
	* nss/nss_files/files-XXX.c: Likewise.
	* nss/nss_files/files-alias.c: Likewise.
	* shadow/fgetspent_r.c: Likewise.

	* string/strerror_r.c: Correct comment.  Patch by Andreas Jaeger.

	* sysdeps/unix/sysv/linux/bits/stat.h: Define _STATBUF_ST_RDEV.
	* sysdeps/unix/sysv/linux/alpha/bits/stat.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/stat.h: Likewise.

	* sysdeps/unix/sysv/linux/i386/sys/ucontext.h: Allocate room for
	FP register content in ucontext_t.

1998-01-22  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/libm-ieee754/s_modfl.c (modf): Correct
	calculation.  Patch by Markus Schoder
	<Markus.Schoder@dresdner-bank.de>.

	* math/libm-test.c (modf_test): Add more tests for modf.

	* sysdeps/unix/sysv/linux/sys/mman.h: Add const to mlock and
	munlock according to Unix98.

1998-01-25  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* nss/nss_files/files-network.c (LINE_PARSER): Set n_addrtype to
	AF_INET.

1998-01-21 07:22  H.J. Lu  <hjl@gnu.org>

	* sysdeps/posix/ttyname.c: Handle symbolic links.
	* sysdeps/posix/ttyname_r.c: Ditto.

1998-01-25 19:39  Ulrich Drepper  <drepper@cygnus.com>

	* db2/makedb.c (process_input): Write terminating \0 for value.
	(print_database): Simply print value string, don't use length.

1998-01-24  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* nss/nsswitch.c (__nss_configure_lookup): Correct test for early
	exit of loop.

1998-01-25  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* nis/ypclnt.c: Don't set dom_client to NULL, or we will not
	close all sockets.

1998-01-25 14:54  Ulrich Drepper  <drepper@cygnus.com>

	* signal/Makefile (routines): Add sighold, sigrelse, sigignore, and
	sigset.
	* signal/sighold.c: New file.
	* signal/sigrelse.c: New file.
	* sysdeps/generic/sigignore.c: New file.
	* sysdeps/generic/sigset.c: New file.
	* sysdeps/posix/sigignore.c: New file.
	* sysdeps/posix/sigset.c: New file.
	* signal/signal.h: Add prototypes for new functions.

	* sysdeps/unix/sysv/linux/alpha/bits/signum.h: Define SIG_HOLD.
	* sysdeps/unix/sysv/linux/bits/signum.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/signum.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/signum.h: Likewise.

1998-01-23 00:16  Tim Waugh  <tim@cyberelk.demon.co.uk>

	* posix/wordexp.c: Added IFS field-splitting in parameter and
	command substitution.  Fixed an IFS-related bug that caused an
	infinite loop.

1998-01-25 12:38  Ulrich Drepper  <drepper@cygnus.com>

	* stdlib/Makefile (routines): Add getcontext, setcontext, makecontext,
	and swapcontext.
	* stdlib/ucontext.h: Correct prototypes.
	* sysdeps/generic/getcontext.c: New file.
	* sysdeps/generic/setcontext.c: New file.
	* sysdeps/generic/makecontext.c: New file.
	* sysdeps/generic/swapcontext.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/Makefile: Removed.

1998-01-25 04:07  Ulrich Drepper  <drepper@cygnus.com>

	* resource/sys/resource.h: Remove #include of ulimit.h which is
	not allowed by SUSv2 and not available on other systems.
	* sysdeps/unix/sysv/linux/ulimit.c: Include ulimit.h.

	* streams/Makefile: New file.
	* streams/stropts.h: New file.
	* sysdeps/generic/bits/stropts.h: New file.
	* sysdeps/generic/isastream.c: New file.
	* sysdeps/generic/getmsg.c: New file.
	* sysdeps/generic/getpmsg.c: New file.
	* sysdeps/generic/putmsg.c: New file.
	* sysdeps/generic/putpmsg.c: New file.
	* sysdeps/generic/fattach.c: New file.
	* sysdeps/generic/fdetach.c: New file.
	* sysdeps/unix/inet/Subdirs: Add streams.
	* sysdeps/generic/bits/types.h: Add definition of __t_scalar_t and
	__t_uscalar_t.
	* sysdeps/unix/sysv/linux/bits/types.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/bits/types.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/types.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h: Likewise.

	* sysdeps/mach/_strerror.c: Follow changes of generic version to
	handle small buffers correctly.

1998-01-24 17:31  H.J. Lu  <hjl@gnu.org>

	* sysdeps/alpha/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE):
	Remove the 3rd arg and add declaration for _dl_runtime_resolve
	and _dl_runtime_profile.

1998-01-25 02:42  Ulrich Drepper  <drepper@cygnus.com>

	* include/cpio.h: New file.  Mainly copied from GNU cpio.
	* posix/Makefile (headers): Add cpio.h.
Diffstat (limited to 'db2/common/db_region.c')
-rw-r--r--db2/common/db_region.c77
1 files changed, 47 insertions, 30 deletions
diff --git a/db2/common/db_region.c b/db2/common/db_region.c
index 4fc603a2b0..02d939e3e6 100644
--- a/db2/common/db_region.c
+++ b/db2/common/db_region.c
@@ -43,7 +43,7 @@
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)db_region.c	10.18 (Sleepycat) 11/28/97";
+static const char sccsid[] = "@(#)db_region.c	10.21 (Sleepycat) 1/16/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -168,6 +168,8 @@ __db_rinit(dbenv, rp, fd, size, lock_region)
 {
 	int ret;
 
+	COMPQUIET(dbenv, NULL);
+
 	/*
 	 * Initialize the common information.
 	 *
@@ -190,6 +192,12 @@ __db_rinit(dbenv, rp, fd, size, lock_region)
 	 * been initialized in which case an attempt to get it could lead to
 	 * random behavior.  If the version number isn't there (the file size
 	 * is too small) or it's 0, we know that the region is being created.
+	 *
+	 * We also make sure to check the return of __db_mutex_lock() here,
+	 * even though we don't usually check elsewhere.  This is the first
+	 * lock we attempt to acquire, and if it fails we have to know.  (It
+	 * can fail -- SunOS, using fcntl(2) for locking, with an in-memory
+	 * filesystem specified as the database home.)
 	 */
 	__db_mutex_init(&rp->lock, MUTEX_LOCK_OFFSET(rp, &rp->lock));
 	if (lock_region && (ret = __db_mutex_lock(&rp->lock, fd)) != 0)
@@ -219,7 +227,8 @@ __db_ropen(dbenv, appname, path, file, flags, fdp, retp)
 	void *retp;
 {
 	RLAYOUT *rp;
-	off_t size1, size2;
+	size_t size;
+	u_int32_t mbytes, bytes;
 	int fd, ret;
 	char *name;
 
@@ -251,19 +260,20 @@ __db_ropen(dbenv, appname, path, file, flags, fdp, retp)
 	 * flatly impossible.  Hope that mmap fails if the file is too large.
 	 *
 	 */
-	if ((ret = __db_ioinfo(name, fd, &size1, NULL)) != 0) {
+	if ((ret = __db_ioinfo(name, fd, &mbytes, &bytes, NULL)) != 0) {
 		__db_err(dbenv, "%s: %s", name, strerror(ret));
 		goto err2;
 	}
+	size = mbytes * MEGABYTE + bytes;
 
 	/* Check to make sure the first block has been written. */
-	if ((size_t)size1 < sizeof(RLAYOUT)) {
+	if (size < sizeof(RLAYOUT)) {
 		ret = EAGAIN;
 		goto err2;
 	}
 
 	/* Map in whatever is there. */
-	if ((ret = __db_rmap(dbenv, fd, size1, &rp)) != 0)
+	if ((ret = __db_rmap(dbenv, fd, size, &rp)) != 0)
 		goto err2;
 
 	/*
@@ -284,11 +294,11 @@ __db_ropen(dbenv, appname, path, file, flags, fdp, retp)
 	 * getting the size of the file and checking the major version.  Check
 	 * to make sure we got the entire file.
 	 */
-	if ((ret = __db_ioinfo(name, fd, &size2, NULL)) != 0) {
+	if ((ret = __db_ioinfo(name, fd, &mbytes, &bytes, NULL)) != 0) {
 		__db_err(dbenv, "%s: %s", name, strerror(ret));
 		goto err1;
 	}
-	if (size1 != size2) {
+	if (size != mbytes * MEGABYTE + bytes) {
 		ret = EAGAIN;
 		goto err1;
 	}
@@ -490,11 +500,9 @@ __db_rgrow(dbenv, fd, incr)
 	int fd;
 	size_t incr;
 {
-#ifdef MMAP_INIT_NEEDED
 	size_t i;
-#endif
 	ssize_t nw;
-	int ret;
+	int mmap_init_needed, ret;
 	char buf[__DB_VMPAGESIZE];
 
 	/* Seek to the end of the region. */
@@ -506,33 +514,42 @@ __db_rgrow(dbenv, fd, incr)
 
 	/*
 	 * Historically, some systems required that all of the bytes of the
-	 * region be written before you could mmap it and access it randomly.
+	 * region be written before it could be mmapped and accessed randomly.
+	 *
+	 * Windows/95 doesn't have that problem, but it leaves file contents
+	 * uninitialized.  Win/NT apparently initializes them.
 	 */
 #ifdef MMAP_INIT_NEEDED
-	/* Extend the region by writing each new page. */
-	for (i = 0; i < incr; i += __DB_VMPAGESIZE) {
+	mmap_init_needed = 1;
+#else
+	mmap_init_needed = __os_oldwin();
+#endif
+	if (mmap_init_needed)
+		/* Extend the region by writing each new page. */
+		for (i = 0; i < incr; i += __DB_VMPAGESIZE) {
+			if ((ret = __db_write(fd, buf, sizeof(buf), &nw)) != 0)
+				goto err;
+			if (nw != sizeof(buf))
+				goto eio;
+		}
+	else {
+		/*
+		 * Extend the region by writing the last page.
+		 *
+		 * Round off the increment to the next page boundary.
+		 */
+		incr += __DB_VMPAGESIZE - 1;
+		incr -= incr % __DB_VMPAGESIZE;
+
+		/* Write the last page, not the page after the last. */
+		if ((ret =
+		    __db_seek(fd, 0, 0, incr - __DB_VMPAGESIZE, SEEK_CUR)) != 0)
+			goto err;
 		if ((ret = __db_write(fd, buf, sizeof(buf), &nw)) != 0)
 			goto err;
 		if (nw != sizeof(buf))
 			goto eio;
 	}
-#else
-	/*
-	 * Extend the region by writing the last page.
-	 *
-	 * Round off the increment to the next page boundary.
-	 */
-	incr += __DB_VMPAGESIZE - 1;
-	incr -= incr % __DB_VMPAGESIZE;
-
-	/* Write the last page, not the page after the last. */
-	if ((ret = __db_seek(fd, 0, 0, incr - __DB_VMPAGESIZE, SEEK_CUR)) != 0)
-		goto err;
-	if ((ret = __db_write(fd, buf, sizeof(buf), &nw)) != 0)
-		goto err;
-	if (nw != sizeof(buf))
-		goto eio;
-#endif
 	return (0);
 
 eio:	ret = EIO;