Patch Name: PHKL_20087

Patch Description: s700 10.26 Return correct value for open()

Creation Date: 99/10/08

Post Date:  99/10/22

Hardware Platforms - OS Releases:
	s700: 10.26

Products: N/A

Filesets:
	OS-Core.CORE-KRN

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_20087: CORRUPTION

Path Name: /hp-ux_patches/s700/10.X/PHKL_20087

Symptoms:
	PHKL_20087:
	Ported 10.20 patch PHKL_18748 to TOS.
	(PHKL_18748)
	( SR: 5003425678 CR: JAGaa12820 )
	When an open() system call is made on an NFS mount, it
	occasionally returns errno=0 and r_val1=0.  Subsequent use
	of the file descriptor (FD) will return EBADF or
	unintentionally send data to STDIN (FD 0).

Defect Description:
	PHKL_20087:
	Ported 10.20 patch PHKL_18748 to TOS.
	( SR: 5003425678 CR: JAGaa12820 )
	The variable containing the return value for the open()
	system call (the file descriptor) can be incorrectly
	overwritten when the file being accessed is on NFS.
	Resolution:
	The return value is now saved and restored by copen()
	(called by open()) before returning.

SR:
	5003425678

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

what(1) Output:
	/usr/conf/lib/libhp-ux.a(vfs_scalls.o):
		99/10/05 kern/sys/vfs_scalls.c, hpux, hpux_10.26, ic
			5dm Revision 1.4 PATCH_10.26 (PHKL_20087)

cksum(1) Output:
	2795496361 29904 /usr/conf/lib/libhp-ux.a(vfs_scalls.o)

Patch Conflicts: None

Patch Dependencies:
	s700: 10.26: PHKL_17282

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches:
	PHKL_20088:
	s800: 10.26

	PHKL_18748:
	s700: 10.20

	PHKL_18749:
	s800: 10.20

Patch Package Size: 90 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_20087

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

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHKL_20087.depot

	By default swinstall will archive the original software in
	/var/adm/sw/patch/PHKL_20087.  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_20087.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_20087.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions:
	This patch depends on base patch PHKL_17282 .
	For successful installation please insure that PHKL_17282
	is in the same depot with this patch, or PHKL_17282 is
	already installed.