Re: "/etc/cron.daily/man-db: /var/cache/man: Permission denied"
- From: "David E. Fox" <dfox@xxxxxxxxxxxxxxxxxxxxxx>
- Date: Thu, 17 Aug 2006 19:19:36 -0700
On Fri, 18 Aug 2006 03:16:08 +0200
Micha <earlymorning@xxxxxx> wrote:
/etc/cron.daily/man-db:
find: /var/cache/man: Permission denied
Cron likely runs with no (or low level) permissions.
/var is mounted as:Hmm. nosuid on mounts may just not honor the set user id for
/dev/hda10 on /var type ext2 (rw,nosuid,nodev,errors=remount-ro)
executables. On the other hand, the manual page tells me that nosuid
makes it ignore suid bits. (see man mount). So, semantically, those
permissions are just rwxr-x-r-x, and even if yuur user is in the 'root'
group, he cannot view the directory contents (because 'x' in a
directory means permission to enter & view the contents).
First, try mounting /var without the nosuid part.
The permissions are:
drwxr-xr-t 17 root root 4.0K 2006-04-02 03:00 /var
drwxrwxr-x 26 root root 4.0K 2006-08-12 20:49 /var/cache/
drwxr-sr-x 16 man root 4.0K 2006-08-18 00:06 /var/cache/man
OK, that's the same permissions that are set on my 'etch' box. And,
even though 'dfox' is not a member of the root or man groups, user dfox
(that's me) can run 'find man' in /var/cache/, which lists all
subdirectories underneath man, or find . inside man, which lists a
number of directories where local man pages are kept (that's what the
directory is for, by the way).
Even so, the permisions would seem correct (the third r-x is "other",
and since I am not a "man" :) or a "root", I am an "other", and this is
all good, because I can view files (-r) or go into the directorty (-x)
but an unable to write anything therein.
drwxr-xr-x 34 root root 4.0K 2006-05-28 13:00 man/
on all levels. - Which seems a little bit weird to me; but
/var/cache/man seems to have been installed by package
man-db, too.
All my man directories (under /var/cache/man) are set like:
drwxr-sr-x 2 man root 48 2005-11-12 05:24 cat1
drwxr-sr-x 2 man root 48 2005-11-12 05:24 cat2
drwxr-sr-x 2 man root 48 2005-11-12 05:24 cat3
drwxr-sr-x 2 man root 48 2005-11-12 05:24 cat4
drwxr-sr-x 2 man root 48 2006-05-07 06:30 cat5
I don't see that the system is working, for one - see the dates on
those directories? The way this ought to work (and I thought it did)
was for example, a hypothetical user looks at a frequently used man
page (like man ls). Since it takes more time to process the man page
than display it, a local copy is in /var/cache/man/<appropriate
sect4ion> (in this case, cat1) for later perusal. Man would see that a processed
page was in the appropriate place, and display it. After a time, the
old entries in those cache directories would be deleted.
But, I have 0 bytes in all directories, and an overall usage of 1464K,
because of a large index.db. (That file was changed 2 days ago.)
--
------------------------------------------------------------------------
David E. Fox Thanks for letting me
dfox@xxxxxxxxx change magnetic patterns
dfox@xxxxxxxxxxxxxxxxxxxxxx on your hard disk.
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