01-15-2008
I have not heard of that parameter in reference to Linux. A web search shows that it is available on on some BSD versions though. And what it does is to restrict non-root users to seeing only processes owned by the user. I do not know of any way to do that in HP-UX. Even if you write your own version of ps and install that, a non-root user could still access the pstat family of system calls via a C program or perl script to see other users processes. And a C compiler and perl interpreter and standard components of HP-UX. Converting HP-UX to a trusted system (C2 level security) will not help this although you could then audit accesses to the ps command and invocations of the pstat system calls.
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LEARN ABOUT HPUX
audwrite
audwrite(2) System Calls Manual audwrite(2)
NAME
audwrite() - write an audit record for a self-auditing process
SYNOPSIS
DESCRIPTION
is called by self-auditing processes, which are capable of turning off the regular auditing using the system call (see audswitch(2)) and
doing higher-level auditing on their own. is restricted to users with the privilege.
checks to see if the auditing system is on and the calling process and the event specified are being audited. If these conditions are met,
writes the audit record pointed to by audrec_p into the audit trail. The record consists of an audit record body and a header with the
following fields:
/* Date/time (tv_sec of timeval) */
/* Process ID */
/* Success/failure */
/* Event being audited */
/* Length of variant part */
The body contains additional information about the high-level audit event. The header fields and are specified by the calling process.
fills in and fields with the correct values. this is done to reduce the risk of forgery. Beginning with 11i version 3 release, converts
the record into a different format before writing it into the current audit trail.
Security Restrictions
Some or all of the actions associated with this system call require the privilege. Processes owned by the superuser have this privilege.
Processes owned by other users may have this privilege, depending on system configuration. See privileges(5) for more information about
privileged access on systems that support fine-grained privileges.
RETURN VALUE
If the write is successful, a value of is returned. Otherwise, a value of is returned and is set to indicate the reason for the failure.
ERRORS
fails if one of the following is true:
The caller does not possess the
privilege.
The event number in the audit record is invalid.
WARNINGS
If causes a file space overflow, the calling process might be suspended until the file space is cleaned up. However, a returned call with
the return value of indicates that the audit record has been successfully written.
AUTHOR
was developed by HP.
SEE ALSO
audswitch(2), audit(4), privileges(5).
audwrite(2)