Patch Name: PHKL_16899

Patch Description: s700 10.20 cowcopyfrom now handles > 72 byte copies

Creation Date: 98/11/11

Post Date:  98/11/25

Hardware Platforms - OS Releases:
	s700: 10.20

Products: N/A

Filesets:
	OS-Core.CORE-KRN

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_16899: CORRUPTION

Path Name: /hp-ux_patches/s700/10.X/PHKL_16899

Symptoms:
	PHKL_16899:
	ftp data corruption.
	When a file is received via ftp from a 10.20 server,
	the last few bytes received are not the same as in
	the file, i.e., last few bytes of the ftp'd file
	are corrupted.

Defect Description:
	PHKL_16899:
	This problem was reported when the 10.20 server was
	connected to a router via NIO FDDI card and the
	server ARP table entry for the router was deleted.
	Moreover, the MTU for the router and the length of
	file to be ftp'd have to be such that the number of
	bytes in the last packet is greater than 72 and is
	not a multiple of 4.  The customer had the MTU of
	1479 and ftp was for a file of size 344064 bytes.
	The problem is caused by the cowcopyfrom() routine
	which returns without doing the copy if the length is
	greater than 72 bytes and is not a multiple of 4.

SR:
	1653279265

Patch Files:
	/usr/conf/lib/libhp-ux.a(vm_mapcall.o)

what(1) Output:
	/usr/conf/lib/libhp-ux.a(vm_mapcall.o):
		vm_mapcall.c $Date: 98/11/11 10:16:12 $ $Revision: 1
			.16.98.7 $ PATCH_10.20 (PHKL_16899)

cksum(1) Output:
	1906853267 6472 /usr/conf/lib/libhp-ux.a(vm_mapcall.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches:
	PHKL_16900:
	s800: 10.20

Patch Package Size: 60 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 PHKL_16899

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

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHKL_16899.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/PHKL_16899.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/PHKL_16899.  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 PHKL_16899.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/PHKL_16899.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None