Patch Name: PHCO_12067

Patch Description: s700_800 10.20 fsck_hfs(1M) cumulative patch

Creation Date: 97/08/06

Post Date:  97/08/19

Hardware Platforms - OS Releases:
	s700: 10.20
	s800: 10.20

Products: N/A

Filesets:
	OS-Core.UX-CORE

Automatic Reboot?: No

Status: General Superseded

Critical:
	Yes
	PHCO_12067: PANIC

Path Name: /hp-ux_patches/s700_800/10.X/PHCO_12067

Symptoms:
	PHCO_12067:
	Fsck may corrupt a filesystem containing continuation
	inodes by clearing the wrong continuation inode.  The
	filesystem will be marked clean.  If this inode is a
	continuation inode, and the base inode is accessed once
	the file system is mounted, it can result in a system
	panic.

	PHCO_7817:
	If the system is booted into LVM maintenance mode, doing an
	fsck of a device defined to have an HFS file system will
	produce the error message

	DeviceName(): Cannot determine name of device major=??,
	                                              minor=??

	where the major and minor numbers may differ, depending on
	the system.  This prevents the fsck from succeeding.

Defect Description:
	PHCO_12067:
	The problem appears when an inode has been corrupted that
	has a continuation inode.  If the inode's continuation
	inode information is corrupt, it is possible that a random
	inode will be cleared.  This problem can cause system
	inconsistencies, and a subsequent panic.

	The problem is caused by missing braces after an
	if-statement, causing an inode to be cleared even though
	the variable was never set to the correct inode value.

	PHCO_7817:
	The problem will only appear when the system is booted into
	LVM maintenance mode, which is usually used only for system
	repair.

	fsck tries to determine if the device that fsck was invoked
	upon is a swap device, but in this mode, the device numbers
	are not mapped where the swap device checking routine can
	determine this information.  It mistakenly exits instead
	of letting the user continue if desired.

SR:
	4701344432 4701329011

Patch Files:
	/sbin/fs/hfs/fsck

what(1) Output:
	/sbin/fs/hfs/fsck:
		PHCO_12067 $Revision: 78.5.1.2 $
		PATCH/10.20:PHCO_8764 libc.a_ID@@/main/r10dav/libc_d
			av/libc_dav_cpe/2
		/ux/libc/libs/libc/archive_pa1/libc.a_ID
		Oct  2 1996 10:35:25
		PATCH_10_20: fsck.o cache.o  ufs_tables.o  ufs_subr.
			o  hpux_rel.o 97/08/06

cksum(1) Output:
	2738127424 237568 /sbin/fs/hfs/fsck

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHCO_7817

Equivalent Patches:
	PHCO_12066:
	s700: 10.10
	s800: 10.10

	PHCO_12065:
	s700: 10.01
	s800: 10.01

	PHCO_12064:
	s800: 9.00 9.04

Patch Package Size: 290 KBytes

Installation Instructions:
	Please review all instructions and the Hewlett-Packard
	SupportLine User Guide or your Hewlett-Packard support terms
	and conditions for precautions, scope of license,
	restrictions, and, limitation of liability and warranties,
	before installing this patch.
	------------------------------------------------------------
	1. Back up your system before installing a patch.

	2. Login as root.

	3. Copy the patch to the /tmp directory.

	4. Move to the /tmp directory and unshar the patch:

		cd /tmp
		sh PHCO_12067

	5a. For a standalone system, run swinstall to install the
	    patch:

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHCO_12067.depot

	5b. For a homogeneous NFS Diskless cluster run swcluster on the
	    server to install the patch on the server and the clients:

		swcluster -i -b

	    This will invoke swcluster in the interactive mode and
	    force all clients to be shut down.

	    WARNING: All cluster clients must be shut down prior to the
		     patch installation.  Installing the patch while the
		     clients are booted is unsupported and can lead to
		     serious problems.

	    The swcluster command will invoke an swinstall session in which
	    you must specify:

		alternate root path  -  default is /export/shared_root/OS_700
		source depot path    -  /tmp/PHCO_12067.depot

	    To complete the installation, select the patch by choosing
	    "Actions -> Match What Target Has" and then "Actions -> Install"
	    from the Menubar.

	5c. For a heterogeneous NFS Diskless cluster:

		- run swinstall on the server as in step 5a to install
		  the patch on the cluster server.

		- run swcluster on the server as in step 5b to install
		  the patch on the cluster clients.

	By default swinstall will archive the original software in
	/var/adm/sw/patch/PHCO_12067.  If you do not wish to retain a
	copy of the original software, you can create an empty file
	named /var/adm/sw/patch/PATCH_NOSAVE.

	Warning: If this file exists when a patch is installed, the
	         patch cannot be deinstalled.  Please be careful
		 when using this feature.

	It is recommended that you move the PHCO_12067.text file to
	/var/adm/sw/patch for future reference.

	To put this patch on a magnetic tape and install from the
	tape drive, use the command:

		dd if=/tmp/PHCO_12067.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None