all,
I havent had to do this for a while ie change group status as a
USER, but now I do ...
/tmp is a mounted partition.
[127] [EMAIL PROTECTED] ~ >ls -la /tmp
total 7760
drwxrwxrwt 19 root root 16384 Jan 15 12:38 .
drwxr-xr-x 27 root root 4096 Oct 22 23:20 ..
[snip]
[128] [EMAIL PROTECTED] ~ >touch aa
[129] [EMAIL PROTECTED] ~ >chgrp apache aa
chgrp: changing group of `aa': Operation not permitted
[130] [EMAIL PROTECTED] ~ >ls -la aa
-rw-r--r-- 1 bundah bundah 0 Jan 15 12:40 aa
My understanding is:
Some files can't be chown()'ed at all: files on read-only filesystem, immutable and
append-only ones.
Otherwise root can change UID and GID as it wishes.
Non-root can't change UID of file.
Non-root can't change GID of file if he isn't the owner.
If non-root owns a file it can change the GID to any of the groups the changing
process belongs to. Any change of GID is subject to quotas.
Both for root and non-root processes:
Change of UID turns suid off.
Change of GID for group-executable turns sgid off.
...
...
How come I cant change that bloody UID?
(I can if I su root).
jobst
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