Patch Name:  PHCO_9484

Patch Description: s700_800 10.20 ksh(1) cumulative patch

Creation Date: 96/12/19

Post Date:  96/12/24

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Status: General Superseded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: No

Path Name:  /hp-ux_patches/s700_800/10.X/PHCO_9484

Symptoms:
        PHCO_9484:

        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_9088:
         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.)

Defect Description:
        PHCO_9484:
        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_9088:
         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.)

SR:
        4701339309 1653182162 1653164350 1653174615 5003295741

Patch Files:
        /usr/bin/ksh
        /usr/bin/rksh

what(1) Output:
        /usr/bin/ksh:
                $Revision: 78.5.1.11 $
                Version 11/16/88
                PATCH_10_20: 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 96/12/19
        /usr/bin/rksh:
                $Revision: 78.5.1.11 $
                Version 11/16/88
                PATCH_10_20: 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 96/12/19

cksum(1) Output:
        1047249741 155648 /usr/bin/ksh
        1047249741 155648 /usr/bin/rksh

Patch Conflicts: None

Patch Dependencies:  None

Hardware Dependencies:  None

Other Dependencies:  None

Supersedes:
        PHCO_9088

Equivalent Patches:
        PHCO_9487:
        s700: 9.01 9.03 9.05 9.07
        s800: 9.00 9.04

        PHCO_9630:
        s700: 10.00
        s800: 10.00

        PHCO_9485:
        s700: 10.01
        s800: 10.01

        PHCO_9486:
        s700: 10.10
        s800: 10.10

Patch Package Size:  210 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_9484

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

                swinstall -x autoreboot=true -x match_target=true \
                        -s /tmp/PHCO_9484.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_9484.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_9484.  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_9484.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_9484.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions:  None