Sxetika me setuid

[George Daflidis-Kotsis]

On Fri, 2 Apr 1999, Pavlos Parissis wrote:

> Ontos to eixa paravlepsh na doso chmod u+s dioti eixa rwxr-xr-x kai den eixe pai ekei to mialo mou.
> Pia diafora tou rwxr-xr-x me to rwsr-xr-x ? diavasa oti thetei user 'h group gia execution.
> Diladi sxeto x gia user kai group den ftanei gia na mporoun (user+group) na trexoun to file?

To suid bit otan einai on shmainei pws otan ektelesei kapoios to programma
pou to exei on, auto 8a ektelestei san na to trexei o owner tou arxeiou.

Dhladh an esu exeis to executable "chfn", to opoio xrhsimopoieitai gia na
allazei o ka8e user to finger name tou kai shnepws prepei na mporei na
grafei sto /etc/passwd file, auto prepei na einai suid root, dhladh na exei
owner ton root kai to suid bit on, etsi wste otan to ekteleis na eisai
ousiastika o user root kai na mporeis na grafeis se files pou mono o root
exei dikaiwma na grafei.

To suid fainetai an einai on n' oxi an anti gia p.x.:

-rwxr-xr-x ena file einai
-rwsr-xr-x
   ^

--
-- George Daflidis-Kotsis -- <gdk at demon.net> -- Demon Internet Ltd. --
--  "It's time to stop being selfish and look after ourselves...."  --

--
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