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setuid og seteuid systemkallende



Hejsa,

Jeg er kommet lidt i tvivl om brugen af setuid og seteuid, og hvad
meningen med effektive uid'er er.

Så vidt jeg har forstået det, kan kun superbrugeren (uid 0), bruge
setuid kaldet. dvs. setuid(x) hvor x != 0, er en envejstur, man kan
aldrig komme tilbage.
Det jeg så har lidt svært ved at indse, er hvad seteuid og i det hele
taget den effektive uid kan/skal bruges til.

Noget dokumentation der forklarer forskellene, så jeg er fri for at være
forvirret og føle mig dum? ;)

-- 
Paul Fleischer // ProGuy
<sslug@sslug>
PGP key fingerprint: 755A 9FB3 F7E4 DB62 8154  C5D6 381B BBCD 7BE1 FF30

Registered Linux User #166300
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