[GRLUG] Firefox on an external drive

[Bob Kline]

On Sat, May 16, 2009 at 10:35 PM, Tom Warren
<tomewarren+grlug at gmail.com<tomewarren%2Bgrlug at gmail.com>
> wrote:

>
>
>
>
> On Sat, May 16, 2009 at 10:43 AM, Bob Kline <bob.kline at gmail.com> wrote:
>
>>
>>
>> On Fri, May 15, 2009 at 8:45 PM, Tom Warren <tomewarren+grlug at gmail.com<tomewarren%2Bgrlug at gmail.com>
>> > wrote:
>>
>>>
>>>
>>>
>>> On Fri, May 15, 2009 at 5:44 PM, Michael Mol <mikemol at gmail.com> wrote:
>>>
>>>> On Fri, May 15, 2009 at 5:34 PM, Bob Kline <bob.kline at gmail.com> wrote:
>>>> >
>>>> >
>>>> > On Fri, May 15, 2009 at 5:21 PM, Michael Mol <mikemol at gmail.com>
>>>> wrote:
>>>> >>
>>>> > As I mentioned in an earlier e-mail,
>>>> > it's an ext3 file system, and I mount it
>>>> > manually, using "mount -t ext3 /dev/sdb7 /disk2".
>>>> > I only use it when I'm backing up, so I have no
>>>> > reason to get in to fstab.  The drive is only used
>>>> > when I do a backup.
>>>> >
>>>>
>>>> I must have missed that one.  A couple things to try...First, add the
>>>> exec option to your mount parameters.  It's plausible that Firefox is
>>>> checking for exec privileges before it tries browsing the directory
>>>> (to avoid getting Permission Denied errors, I would guess), but
>>>> mounting external drives defaults to enabling the noexec option.  Or,
>>>> at least, it used to; I discovered that when I couldn't run scripts
>>>> from my ~/bin directory when my /home was on an external USB disk.
>>>> Come to think of it, I couldn't browse /home with Firefox then,
>>>> either. (I didn't make that particular connection until just now.)
>>>>
>>>> Disabling noexec mount ability fixed the ~/bin execute issue, but I
>>>> don't remember if the Firefox browsing issue was fixed at the same
>>>> time.  It wouldn't surprise me at all, though.
>>>>
>>>> --
>>>> :wq
>>>> _______________________________________________
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>>>>
>>>
>>>
>>> What is the output of ls -ld /drive2 ? This could very well be a
>>> permissions issue.
>>>
>>> Tom
>>>
>>
>> 755  root root
>>
>> I changed the owner to myself, and
>> nothing changes.
>>
>> But then, I can look at any other directory
>> in root with similar permissions.  Just not the
>> external drive.
>>
>>    -- Bob
>>
>>
>>
>>
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>>
>
> As the user (non-root) can you list the contents of the Filesystem? Are we
> maybe dealing with an ACL?  Run "getfacl /disk2" before and after you mount
> the drive and post the output.
>
>
> Tom
>
>
>
Before mounting:

# file: disk2
# owner: me
# group: me
user::rwx
group:: r-x
other::r-x

After mounting:

# file: disk2
# owner: root
# group: root
user::rwx
group::r-x
other::r-w


So the mount process does indeed change
permissions, but this should not change a
couple of key things:

1)  Konqueror works fine.  I can view the
contents of /disk2 as expected.

2)  The permissions are 755, so I should be
able to at least view the contents of disk2
in any case.

3) I can view the contents of /disk2 one
file at a time.  e.g., if I enter file:///disk2/myfile.html
as the URL to Firefox, the contents are displayed.
It's only when I enter file:///disk2 that I get a blank
page.

At this point it does seem that Firefox requires
some kind of permissions that just aren't there.
I tried changing "owner" to "me", but nothing
changed - I still cannot view the contents of /disk2.

I can view the contents of any directory owned
by root on the primary drive.  Just not /disk2.


   -- Bob
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