Patch Name: PHCO_12960

Patch Description: s700_800 10.10 ksh(1) cumulative patch

Creation Date: 97/10/23

Post Date:  97/11/04

Hardware Platforms - OS Releases:
	s700: 10.10
	s800: 10.10

Products: N/A

Filesets:
	OS-Core.UX-CORE OS-Core.CORE-ENG-A-MAN

Automatic Reboot?: No

Status: General Release

Critical: No

Path Name: /hp-ux_patches/s700_800/10.X/PHCO_12960

Symptoms:
	PHCO_12960:

	1) while sourcing a script which looks like
	   cat bigfile | while read blhaa... the ksh
	   logsout,this is a regression of previous
	   fix for the defect DTS DSDe 429747. The
	   fix for the defect DTS DSDe 429747 is
	   withdrawn in this patch.

	2) Problem with ksh script sourcing another
	   script, if the standard output and error
	   are closed.

	PHCO_10721:
	1) When ksh sees history file (using old internal magic
	   cookies) of pre-10.10 release, it simply unlinks
	   (discards) that history file.

	2) When any shell-builtin command returns NULL in command
	   substitution and the execution trace flag -x is on, then
	   the output of the next shell-builtin in command
	   substition is affected.

	PHCO_9486:

	1)  While using in-line command editing, characters
	    would sometimes appear that had not been typed
	    by the user, most commonly ^B.  Also, in editing
	    long history lines, especially near the end of
	    the lines, garbage characters would appear and
	    the line couldn't be edited properly.

	2)  ksh was leaving fd 10 [used for history file]
	    always open.  File descriptor 10 was being
	    reserved for use by the shell, but the file
	    descriptor was opened in a way that it would
	    remain open across an exec(2) system call.

	3)  ksh returns incorrect exit-status when it executes
	    'exit' command on trap.

	    For Example, When you run the following script
	    "trap.sh"

	        #! /usr/bin/ksh
	        trap "_Exit" 0 1 2 3 15

	        _Exit(){
	           exit
	        }

	        rm FOOOOOOOO
	        ls FOOOOOOOO

	    $trap.sh
	    $echo $?
	    0

	    The exit-value of the above script should be of last
	    command executed that is 2 (exit value of ls FOOOOOOOO),
	    rather it will return 0.

	PHCO_9087:
	 1) Trap on EXIT set outside a function is not executed.
	    For example,

		trap 'echo exiting shell' EXIT
		f()
		{
		   exit
		}
		f

	    should output "exiting shell" but instead produces no
	    output.

	 2) When a here-document is used on the left side of
	    a pipeline that is put into the background,
	    the shell sometimes fails to open temporary
	    files.

	    For example,

		cat <<EOF | more &
		xxxx
		EOF

	    will sometimes produce the error:

		/tmp/sh1811.2: cannot open

	 3) cd -P and pwd -P can fail when current directory path
	    includes symbolic links where the link starts with ../
	    For example:

		cd /tmp
		mkdir test
		cd test
		ln -s ../../usr lnk
		cd lnk
		pwd -P

	    will produce the error "pwd: permission denied".

	 4) ksh hangs when processing "cat bigfile | while read ..."
	    The right side of the pipe can be any shell command
	    (while, if, for, etc.)

	PHCO_7323:
	  The exit command in a function does not exit.
	  This defect was caused by the fix for DSDe422708
	  which fixed an exit from a function combined with
	  a trap on exit problem. That fix broke the case
	  where there is no trap on exit.

Defect Description:
	PHCO_12960:
	1) while sourcing a script which looks like
	   cat bigfile | while read blhaa... the ksh
	   logsout,this is a regression of previous
	   fix for the defect DTS DSDe 429747. The
	   fix for the defect DTS DSDe 429747 is
	   withdrawn in this patch.

	2) Problem with ksh script sourcing another
	   script, if the standard output and error
	   are closed.

	PHCO_10721:
	1) Since the internal magic cookies (H_UNDO & H_CMDNO) used
	   in history file were valid multibyte characters, the
	   cookies were changed to and hence aviod ambiguity when a
	   history file is read in multibyte locales, the old
	   history files were simply discarded.

	2) When any shell-builtin command returns NULL in command
	   substitution and the execution trace flag -x is on, then
	   it takes incorrect output from the I/O stream for next
	   shell-builtin command substition.

	        set -x
	        FOO=$(whence non_existing_file)
	        FOO=$(whence ls)
	        echo $FOO

	   It should prints "/usr/bin/ls" where as it takes
	   incorrect value and hence prints NULL for the "echo
	   $FOO".

	PHCO_9486:
	1)  While using in-line command editing, untyped
	    characters would sometimes appear, most often
	    ^B.  These occurred most typically when very
	    long command lines had been created.  Also,
	    in editing long history lines, especially
	    near the end of the lines, garbage characters
	    would appear and the line couldn't be edited
	    properly.

	2)  File descriptor 10 was being reserved for use by
	    the shell, but the file descriptor was opened in a
	    way that it would remain open across an exec(2)
	    system call.

	3)  ksh returns incorrect exit-status when it executes
	    'exit' command on trap.

	PHCO_9087:
	 1) A trap on EXIT set outside of a function is not
	    executed if an exit is called from within a
	    function.

	 2) When a here-document is used on the left side of
	    a pipeline that is put into the background,
	    the shell sometimes fails to open temporary
	    files.  A race condition exists that sometimes
	    causes the shell to delete its temporary files
	    before it has read them.

	 3) cd -P and pwd -P generate nonexistent path names
	    when the logical path uses symbolic links containing
	    ..

	 4) ksh hangs when processing "cat bigfile | while read ..."
	    The right side of the pipe can be any shell command
	    (while, if, for, etc.)

	PHCO_7323:
	  The exit command in a function does not exit.
	  This defect was caused by the fix for DSDe422708
	  which fixed an exit from a function combined with
	  a trap on exit problem. That fix broke the case
	  where there is no trap on exit.

SR:
	4701339309 1653182162 1653164350 1653174615 5003295741
	5003366856 5003385542

Patch Files:
	/usr/bin/ksh
	/usr/bin/rksh
	/usr/share/man/man1.Z/ksh.1

what(1) Output:
	/usr/bin/ksh:
		$Revision: 76.4.1.20 $
		Version 11/16/88
		PATCH_10_10: arith.o blok.o ctype.o defs.o edit.o ec
			ho.o expand.o fault.o io.o string.o stak.o w
			ord.o emacs.o vi.o hpux_rel.o args.o builtin
			.o cmd.o main.o msg.o print.o xec.o name.o m
			acro.o error.o service.o test.o jobs.o histo
			ry.o 97/10/23
	/usr/bin/rksh:
		$Revision: 76.4.1.20 $
		Version 11/16/88
		PATCH_10_10: arith.o blok.o ctype.o defs.o edit.o ec
			ho.o expand.o fault.o io.o string.o stak.o w
			ord.o emacs.o vi.o hpux_rel.o args.o builtin
			.o cmd.o main.o msg.o print.o xec.o name.o m
			acro.o error.o service.o test.o jobs.o histo
			ry.o 97/10/21
	/usr/share/man/man1.Z/ksh.1:
		None

cksum(1) Output:
	842332939 155648 /usr/bin/ksh
	2464515822 155648 /usr/bin/rksh
	3959758394 40787 /usr/share/man/man1.Z/ksh.1

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies:
	s700: 10.00: PHCO_10730 PHCO_10731
	s700: 10.01: PHCO_10728 PHCO_10729
	s700: 10.10: PHCO_10720
	s700: 10.20: PHCO_10718 PHCO_10719
	s800: 10.00: PHCO_10730 PHCO_10731
	s800: 10.01: PHCO_10728 PHCO_10729
	s800: 10.10: PHCO_10720
	s800: 10.20: PHCO_10718 PHCO_10719

Supersedes:
	PHCO_7323 PHCO_9087 PHCO_9486 PHCO_10721

Equivalent Patches: None

Patch Package Size: 400 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_12960

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

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHCO_12960.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_12960.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_12960.  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_12960.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_12960.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None