Meaning of SYSCALL fields

[Matthew Booth]

I'm documenting the fields of certain auditd messages for RHEL 4.
Amongst the SYSCALL fields are the following uid/gid related fields.

uid (obvious)
gid (obvious)
euid (obvious)
suid - what's this?
fsuid - what's this?
egid (obvious)
sgid - what's this?
fsgid - what's this?

Can anybody fill in the blanks for me?

Thanks,

Matt
-- 
Matthew Booth, RHCA, RHCSS
Red Hat, Global Professional Services

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