Patch Name:  PHNE_5413

Patch Description: s700_800 10.00 fixes telnet(1) CPU consumption problem

Creation Date: 95/04/07

Post Date:  95/04/18

Repost: 95/12/29
        The patch was modified to allow installation on HP-UX 10.01.

Repost: 96/01/15
        The patch was modified to disallow installation on HP-UX 10.01.
        The patch is only intended for HP-UX 10.00.

Hardware Platforms - OS Releases:
        s700: 10.00
        s800: 10.00

Products: N/A

Filesets:
        InternetSrvcs.INETSVCS-RUN

Automatic Reboot?: No

Status: General Release

Critical: No

Path Name:  /hp-ux_patches/s700_800/10.X/PHNE_5413

Symptoms:
        PHNE_5413:
        The following symptoms correspond to the descriptions in
        the defect descriptions field for PHNE_5413:
        1. The telnet(1) command consumes a large percentage of
           the CPU when:

           a. Running in the background (using the Bourne shell)

           b. Having its input redirected from a file (such as
              /dev/null)

           c. Having its input supplied via a pipe.

Defect Description:
        PHNE_5413:
        The following defect descriptions are for PHNE_5413:
        1. The problem is that the telnet(1) command continues
           to poll its input even if it has reached the end-of-file
           and is not a tty.  This incessant polling causes the
           CPU consumption.

SR:
        5003222901

Patch Files:
        /usr/bin/telnet

what(1) Output:
        /usr/bin/telnet:
                Copyright (c) 1988 Regents of the University of Cali
                        fornia.
                main.c          1.10 (Berkeley) 11/18/88
                Revision 1.1.110.2 PHNE_5413 Wed Apr  5 18:05:01 GMT
                         1995
                commands.c      1.15 (Berkeley) 2/6/89
                network.c       1.13 (Berkeley) 6/29/88
                ring.c          1.10 (Berkeley) 6/29/88
                sys_bsd.c       1.16 (Berkeley) 11/29/88
                telnet.c        5.38 (Berkeley) 2/6/89
                terminal.c      1.13 (Berkeley) 6/29/88
                tn3270.c        1.16 (Berkeley) 11/30/88
                utilities.c     1.11 (Berkeley) 2/6/89

cksum(1) Output:
        86116281 53248 /usr/bin/telnet

Patch Conflicts: None

Patch Dependencies:  None

Hardware Dependencies:  None

Other Dependencies:  None

Supersedes:  None

Equivalent Patches:
        PHNE_5399:
        s700: 9.01 9.03 9.05
        s800: 9.00 9.04

Patch Package Size:  100 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_5413

        5. Run swinstall to install the patch:

                swinstall -x autoreboot=true -x match_target=true
                        -s /tmp/PHNE_5413.depot

        By default swinstall will archive the original software in
        /var/adm/sw/patch/PHNE_5413.  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_5413.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:

                swpackage -s /tmp/PHNE_5413.depot -x
                        target_type=tape -d /dev/rmt/0m PHNE_5413

Special Installation Instructions:  None