HP Tru64 UNIX and TruCluster Server Version 5.1B-5 Patch Summary and Release Notes (March 2009)

On a cluster this tunable must be set on all the cluster members.
3.1.6 New rc.config Variables to Hide User Process Arguments and Environmental
Variables for ps and w Commands
By default, the ps command displays a process's arguments and the ps e command
displays a process's environmental variables. You can prevent users from viewing the
arguments and environmental variables of other users' processes. To hide user process
arguments and variables, enable the variables in the /etc/rc.config.common file:
# rcmgr -c set TBL_ARGUMENTS_DISABLE 1
# rcmgr -c set TBL_ENVIRONMENT_DISABLE 1
However, the root can always view the arguments and environmental variables of
all users.
Similarly, the w command displays commands and their arguments. To prevent users
from viewing commands and the arguments of other users' processes, enable the
variable in the /etc/rc.config.common file:
# rcmgr -c set TBL_ARGUMENTS_DISABLE 1
However, the root can always view the arguments of all users.
3.1.7 Conformance to Open Group Standards
Set the STDS_FLAG environment variable to ALL so that
pthread_mutexattr_getprotocol() conforms to the Open Group standard.
3.1.8 UNIX 98 Compliance with libc
Some libc functions from the printf, scanf, and streams family have been made
to comply with UNIX 98 standards. These setting are enabled using the
sys_attrs_generic variable, std_unix98. This variable (std_unix98) should
not be set to the value of STD_UNIX98_ALL without consulting the Tru64 engineering
team. For more information, see the sys_attrs_generic manpage .
3.1.9 Netstat Read Error on Structures in a Live System
When trying to read a structure, the netstat() command displays the following
message:
netstat: read from /dev/kmem: No such device or address
This can result from netstat reading structures that are dynamically undergoing
change on a live system. This is a transient problem that will be reported to the user.
3.1.10 O_APPEND Flag has no Effect on Behaviour of pwrite()
The pwrite() system call has been modified to conform to UNIX98 standard behavior.
O_APPEND flag now will have no effect on the behaviour of pwrite(). The sysconfig
3.1 New Release Notes 37