OT: setrlimit equivalent to prevent unlink or truncate

[Oliver Fromme]

Johannes Hofmann wrote:
 > Yes, the latter. In a program I want to exec another binary with
 > limited privileges.

The traditional UNIX way is to exec that other binary as
an unprivileged user, e.g. "nobody".  The problem is that
you must be root to call setuid() in the first place.
You can use sudo(8) or super(1) for that purpose.

Of course the problem could be solved in a much better
way with mandatory access control (MAC), which requires
appropriate support from the OS.

Best regards
   Oliver

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