maart@cs.vu.nl (Maarten Litmaath) (05/11/89)
morrell@hpsal2.HP.COM (Michael Morrell) writes:
\/ hpsal2:comp.unix.questions / Kemp@DOCKMASTER.NCSC.MIL /
\6:33 pm May 5, 1989 /
\...
\ -rw-r----- root a.c
\ -rw-r----- root b.c
\ -rwxr-x--- root a.out
\...
\ # foreach f (*)
\ ? if -x $f chmod o+x $f
\ ? end
\
\and it selected EVERY file, not just those with execute permission. (I
\actually used echo instead of chmod while testing). If I do the same
\thing as a normal user, it works properly.
\
\----------
\
\ I think since the superuser can execute any file even if it has mode 000,
Wrong! The superuser needs AT LEAST ONE x-bit turned on.
\csh tries to do you a favor and always returns true for "-x" if you are root
\(same goes for "-r" and "-w"). I don't know if I like this "feature".
It's a bad feature, but this time it's NOT csh's fault! (Unbelievable :-)
Esteemed members of the Jury, the guilty is...
access(2)!
Something like:
/*
* If you're the super-user,
* you always get access.
*/
if (cred->cr_uid == 0)
return (0);
:-(
--
"`Goto considered harmful' considered |Maarten Litmaath @ VU Amsterdam:
harmful" considered harmful! |maart@cs.vu.nl, mcvax!botter!maart