Jim Meyering <jim@xxxxxxxxxxxx> wrote:
[ I'm Cc'ing bug-coreutils@xxxxxxxx
FYI, this is a continuation of discussion from the SELinux list:
http://marc.info/?t=120645074000003&r=1&w=2
and the debian bug tracking system: http://bugs.debian.org/472590
The problem is that on an SELinux-enabled system, 'ls -l's "+",
the "alternate access method" indicator, is useless, because it
appears on every file:
$ ls -glo /var
total 164
drwxr-xr-x+ 3 4096 2008-03-29 08:43 kerberos
drwxr-xr-x+ 39 4096 2008-03-29 08:43 lib
drwxr-xr-x+ 2 4096 2008-03-27 17:33 local
drwxrwxr-x+ 8 4096 2008-03-31 04:15 lock
drwxr-xr-x+ 20 4096 2008-03-31 09:55 log
lrwxrwxrwx+ 1 10 2008-03-28 23:33 mail -> spool/mail
...
Newer POSIX allows any non-space character as the indicator, and
that's what we're discussing now.
]
Russell Coker <russell@xxxxxxxxxxxx> wrote:
On Wednesday 26 March 2008 04:31, Michael Stone <mstone@xxxxxxxxxx> wrote:
if (acl) then '+'
else if (selinux) then '.'
Should there be some special marking of files with both a SE Linux context and
an ACL?
Pity that they didn't choose an "a" to mark an ACL which would then permit
using "A" for ACL + MAC.
This is probably as good a time as any to make such a change, though
I doubt it will make the cut for the upcoming release. I'd like to keep
it simple (i.e., not try to encode all possible combinations). If you
want to get full details, stat(1) is probably the program to change.
I like Michael's suggestion. Rephrasing it,
if (SELinux, with no other MAC or ACL)
use '.'
else if (any other combination of alternate access methods)
use '+'
If someone who already has a copyright assignment on file for coreutils
wants to write the patch (including doc update, tests, NEWS, ChangeLog,
etc.), please speak up ASAP. Otherwise I'll do it.
No one spoke up, so here's code, for discussion's sake.
I've tested it only lightly.
This change is not slated for the upcoming release.
Here's sample output, running on an SELinux system:
$ src/ls -ldgo [ac]*
-rw-r--r--. 1 42625 2008-04-02 19:31 aclocal.m4
drwxr-xr-x. 2 4096 2008-04-02 19:31 autom4te.cache
-rw-r--r--. 1 1597 2008-03-21 16:35 cfg.mk
-rw-r--r--. 1 1417195 2008-04-02 19:33 config.log
-rwxr-xr-x. 1 71225 2008-04-02 19:33 config.status
-rwxr-xr-x. 1 1846424 2008-04-02 19:31 configure
-rw-r--r--. 1 12014 2008-03-25 23:55 configure.ac
This is so confusing. What is so horribly wrong with a capital S for
SELinux or A for ACL?
Vikram
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