Re: buglet in ext2 sticky bit?

Jesse Pollard (pollard@tomcat.admin.navo.hpc.mil)
Mon, 25 Oct 1999 08:51:02 -0500 (CDT)

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>On 2.2.13pre9 a user cannot delete a file in /tmp even if it
>is writable for everyone:
>
>japetus /tmp ls -ld . aap
>drwxrwxrwt 5 root root 1024 Oct 24 22:17 .
>-rw-rw-rw- 1 root root 30 Oct 24 22:11 aap
>japetus /tmp rm -f aap
>rm: cannot unlink `aap': Operation not permitted
>japetus /tmp id
>uid=363(fvm) gid=215(sec) groups=215(sec),3972(owner),9998(inet1),9999(inet2),9997(inet3)
>japetus /tmp uname -a
>Linux japetus.localdomain 2.2.13pre9 #1 Sat Sep 18 21:32:21 MEST 1999 i486 unknown
>
>
>AFAIK a file writable for everyone should be deletable when
>+t on the parent dir.

no. only the owner can delete - the file could be used as a lock - if
your premis were true, then anywne would be able to remove the lock.
(even though it is a shared file.)

This is working correctly IMO. (Although I also think the protection
mask is improper)

-------------------------------------------------------------------------
Jesse I Pollard, II
Email: pollard@navo.hpc.mil

Any opinions expressed are solely my own.

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