This prototype file is not yet complete. To complete this file, you need to make the following modifications:

• Insert the entries for the control files (file type i), because they have a different format than the other package objects.

• Remove entries for directories that already exist on the target system.

• Change the access permission and ownership for each entry.

• Prepend a slash to the absolute package objects.

This is the final prototype file:

i pkginfo
i postinstall
i preremove
i copyright
e sed /etc/devlink.tab ? ? ?
f none /usr/include/sys/scsi/targets/sst_def.h 0644 bin bin
f none /usr/kernel/drv/sst 0755 root sys
f none /usr/kernel/drv/sst.conf 0644 root sys
d none SUNWsst 0775 root sys
f none SUNWsst/sstest.c 0664 root sys

The questions marks in the entry for the sed script indicate that the access permissions and ownership of the existing file on the installation machine should not be changed.

The sed Class Action Script (/etc/devlink.tab)

In the driver example, a sed class script is used to add an entry for the driver to the file /etc/devlink.tab. This file is used by the devlinks command to create symbolic links from /dev into /devices. This is the sed script:

# sed class script to modify /etc/devlink.tab
!install
/name=sst;/d
$i\
type=ddi_pseudo;name=sst;minor=character	rsst\\A1

!remove
/name=sst;/d

The pkgrm command does not run the removal part of the script. You may need to add a line to the preremove script to run sed directly to remove the entry from the /etc/devlink.tab file.

The postinstall Installation Script

In this example, all the script needs to do is run the add_drv command.

# Postinstallation script for SUNWsst
# This does not apply to a client.
if [$PKG_INSTALL_ROOT = "/" -o -z $PKG_INSTALL_ROOT]; then
   SAVEBASE=$BASEDIR
   BASEDIR=""; export BASEDIR
   /usr/sbin/add_drv sst
   STATUS=$?
   BASEDIR=$SAVEBASE; export BASEDIR
   if [ $STATUS -eq 0 ]
   then
	     exit 20
   else
	     exit 2
   fi
else
   echo "This cannot be installed onto a client."
   exit 2
fi

The add_drv command uses the BASEDIR parameter, so the script has to unset BASEDIR before running the command, and restore it afterwards.

One of the actions of the add_drv command is to run devlinks, which uses the entry placed in /etc/devlink.tab by the sed class script to create the /dev entries for the driver.

The exit code from the postinstall script is significant. The exit code 20 tells the pkgadd command to tell the user to reboot the system (necessary after installing a driver), and the exit code 2 tells the pkgadd command to tell the user that the installation partially failed.

The preremove Removal Script

In the case of this driver example, it removes the links in /dev and runs the rem_drv command on the driver.

# Pre removal script for the sst driver
echo "Removing /dev entries"
/usr/bin/rm -f /dev/rsst*

echo "Deinstalling driver from the kernel"
SAVEBASE=$BASEDIR
BASEDIR=""; export BASEDIR
/usr/sbin/rem_drv sst
BASEDIR=$SAVEBASE; export BASEDIR

exit 

The script removes the /dev entries itself; the /devices entries are removed by the rem_drv command.

The copyright File

This is a simple ASCII file containing the text of a copyright notice. The notice is displayed at the beginning of package installation exactly as it appears in the file.

	Copyright (c) 1999 Drivers-R-Us, Inc.
	10 Device Drive, Thebus, IO 80586

All rights reserved. This product and related documentation is
protected by copyright and distributed under licenses 
restricting its use, copying, distribution and decompilation. 
No part of this product or related documentation may be 
reproduced in any form by any means without prior written 
authorization of Drivers-R-Us and its licensors, if any.