Originally posted by: SystemAdmin

Hello,

I have an LDR_PRELOAD library which works fine on AIX 5.3. The library is loaded in programs and I can use it to override some system functions. I also have a script to set LDR_PRELOAD and start a program with it.

The same exact script and library do nothing on AIX 6.1. It appears that the library does not even get loaded. It's _init function is never called.

Is there something I need to configure or install to make LDR_PRELOAD work on AIX 6.1?
#AIX-Forum

Originally posted by: l2abe

Starting from AIX 6.1 there is a new security features called Enhanced RBAC (Role Based Access Control).
It is enabled by default, look for

1. lsattr -El sys0 |grep RBAC

enhanced_RBAC true Enhanced RBAC Mode True

Try disabling it by running

1. chdev -l sys0 -a enhanced_RBAC=false

followed by a system reboot!!!
In this way you return to the 5.3 Legacy RBAC mode and that should work as before.
Further details about RBAC are in the official AIX 6.1 docs.
A quick overview in this Technote
#AIX-Forum

Originally posted by: l2abe

Starting from AIX 6.1 there is a new security features called Enhanced RBAC (Role Based Access Control).
It is enabled by default, look for

1. lsattr -El sys0 |grep RBAC

enhanced_RBAC true Enhanced RBAC Mode True

Try disabling it by running

1. chdev -l sys0 -a enhanced_RBAC=false

followed by a system reboot!!!

In this way you return to the 5.3 Legacy RBAC mode and that should work as before.

Further details about RBAC are in the official AIX 6.1 docs.
A quick overview in this LAB Technote
Thre is also a RedBook AIX V6 Advanced Security Features Introduction and Configuration
#AIX-Forum