TECHNICAL INFORMATION DOCUMENT

TITLE:              PTF161 - enhanced operation of the free(3c) system call
DOCUMENT ID:        TID300126
DOCUMENT REVISION:  B
DATE:               25JAN95
ALERT STATUS:       Yellow
INFORMATION TYPE:   Symptom Solution
README FOR:         PTF161

PRODUCT and VERSION:
UnixWare 1.1

ABSTRACT:

The ptf161 file contains ptf161 - enhanced operation of the 
free(3c) call.  This ptf updates the /usr/ccs/lib/libmalloc.a 
archive. It allows malloc'd memory to be returned to the systems 
global free list.  This patch should be installed on all 
UnixWare 1.1.1 and 1.1.2 systems which exhibit memory allocation 
and release problems.

SYMPTOM

1.1.1 and 1.1.2 system exhibit memory allocation and release problems.

SOLUTION

Apply the ptf161 file.


Installation Instructions:

DATATYPE: datastream

1.  Download the ptf161.Z and ptf161.txt files to the /tmp directory   
    on your machine.

2.  Read the release notes contained in the ptf161.txt file.

3.  Now become root, uncompress the file and add the package to your 
    system using the following commands:

     $ su
     # uncompress /tmp/ptf161.Z
     # pkgadd -d /tmp/ptf161 ptf161

Solution Specifics

1. General Description

This ptf updates the /usr/ccs/lib/libmalloc.a archive to provide 
for enhanced operation of the free(3c) system call. It allows malloc'd 
memory to be returned to the systems global free list.

2. New Features

None


3. Software Notes and Recommendations

This patch should be installed on all UnixWare 1.1.1 and 1.1.2 systems 
which exhibit memory allocation and release problems.

This patch requires UnixWare Update 1.1.1 to be installed on the system.  
The package will NOT install if the required system configuration 
is not present.

4. Hardware Notes and Recommendations

None 

5. Installation Instructions

Depending on the format:

If this PTF was delivered on a diskette, then (as "root")

          pkgadd -d diskette1

should install this patch.

Otherwise, if you have a file such as "ptf161" which is in a "stream" format,
then (as "root")

          pkgadd -d <pwd>/ptf161 

will work.
     
*** Usually, but NOT always...

After installing this patch, a system reboot will be needed to rebuild the
kernel and incorporate the updated driver(s).