suid does not detect if it is traced

[hilbix]

seteuid() no more works if a process is ptrace()d, see CVE-2003-0127

suid perhaps should detect that situation and do something helpful.

[hilbix]

FWIW I want to be able to strace programs which run under suid control.

For now what I do is to put some strace right into suid.conf.

However it would be convenient if there would be some way to apply the strace (and things like ltrace tricks based on LD_PRELOAD) on-demand and not by editing some configuration file. But in that case the caller must have the right permissions (either be root or the destination user).