Patch Name: PHNE_22085

Patch Description: s700_800 10.20 Streams PTY cumulative patch

Creation Date: 00/07/28

Post Date:  00/09/07

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

Products: N/A

Filesets:
	Streams-TIO.STRTIO-KRN

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHNE_22085: MEMORY_LEAK
	PHNE_16132: PANIC
	PHNE_10831: PANIC

Path Name: /hp-ux_patches/s700_800/10.X/PHNE_22085

Symptoms:
	PHNE_22085:
	System hangs due to memory starvation when using pckt
	module.

	PHNE_18525:
	Resizing a window on busy PTY pair causes the window
	to hang.

	PHNE_14975:
	Streams pty did not work in UTF8 environment. This patch is
	an enhancement that provides UTF8 support.

	PHNE_16132:
	System panic type 15 in pckt_rsrv in the Streams pty code.

	PHNE_12038:
	ioctl TCFLSH failed to work on Streams PTY.

	PHNE_10831:
	System panic at ldtty_copymsg() in streams pty code.

	PHNE_10174:
	Characters are not echoed as they are typed until
	VMIN is reached.
	Rlogin does not use the defaults from stty < /dev/ttyconf

Defect Description:
	PHNE_22085:
	Memory leak when processing M_FLUSHR message in pckt module.

	Resolution:
	Free the undeallocated message used in processing M_FLUSHR
	message in pckt module.

	PHNE_18525:
	If a window is resized when there is a lot of activity on
	the window, the window hangs.

	Resolution:
	The fix was to not use flow control for the high priority
	messages like M_IOCACK and M_IOCNAK.  These messages were
	sent upstream to the STREAMS head, even when the STREAMS
	head was flow-controlled.

	PHNE_14975:
	This patch is an enhancement for UTF8 support for STREAMS
	pty line discipline.

	PHNE_16132:
	The type 15 panic was caused the b_rptr pointer in the
	mblk being overwritten by a bad value when M_FLUSH was
	being processed and the system ran out of memory.

	PHNE_12038:
	This problem was caused by a miss handling of M_FLUSH
	message on the Packet Mode module on the Streams PTY.

	PHNE_10831:
	This panic was caused by the fact that ldtty_copymsg()
	was referencing a streams message that has already been
	freed.  This happened when the streams pty is in raw mode.

	PHNE_10174:
	The first problem was caused by the fact that the VTIME
	timer was not started until a read is pending.  Since
	the application was using select, no read was pending.
	As a result, data were not available for read until the
	VMIN requirement is met.
	The second problem was due to the fact the /dev/ttyconf
	feature was not implemented on Streams PTY which is used
	by rlogind starting HP-UX 10.20.  The /dev/ttyconf feature
	is a new feature added to the BSD line discipline recently
	to provide backward compatibility.  It was not expected
	that users would need this feature on Streams PTY.

SR:
	5003365049 5003355248 1653192013 5003376368 5003429548
	1653284232 8606152552

Patch Files:
	/usr/conf/lib/libstrtio.a
	/usr/include/sys/eucioctl.h

what(1) Output:
	/usr/conf/lib/libstrtio.a:
		PATCH_10.20: pckt.o  1.3.112.6  00/07/24  PHNE_22085
		PATCH_10.20: ptem.o  1.3.112.2  97/02/28  PHNE_10174
		PATCH_10.20: pty.o  1.3.112.2  97/02/28  PHNE_10174
		PATCH_10.20: ldtty_euc.o  1.3.112.4  98/05/08  PHNE_
			14975
		PATCH_10.20: ldtty.o  1.4.112.8  98/05/08  PHNE_1497
			5
	/usr/include/sys/eucioctl.h:
		eucioctl.h      1.1 8/31/90

cksum(1) Output:
	979712296 80452 /usr/conf/lib/libstrtio.a
	2854442824 2948 /usr/include/sys/eucioctl.h

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHNE_10174 PHNE_10831 PHNE_12038 PHNE_16132 PHNE_14975 PHNE_18525

Equivalent Patches: None

Patch Package Size: 140 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 PHNE_22085

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

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHNE_22085.depot

	By default swinstall will archive the original software in
	/var/adm/sw/patch/PHNE_22085.  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 PHNE_22085.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/PHNE_22085.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None