CF Speicherkarte

CF Speicherkarte

[Klaus Heintzenberg]

Ich habe es geschafft, mir den vollen Zugriff auf die CompactFlash-Karte  zu
verbauen.

Als User kann ich zwar Daten von der Karte lesen, kann aber nicht darauf
schreiben (löschen)

Als root jedoch lassen sich die Karten lesen und schreiben.



Linux:/etc # ls /dev/sda1 -l

brwxrwxrw-    1 root     disk       8,   1 2003-09-23 17:59 /dev/sda1



Was muss ich tun, um das zu reparieren?



73, Klaus







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Re: CF Speicherkarte

[Wilbert Knol]

On Fri, 14 Nov 2003, Klaus Heintzenberg wrote:

> Als User kann ich zwar Daten von der Karte lesen, kann aber nicht darauf
> schreiben (löschen)
>
> Als root jedoch lassen sich die Karten lesen und schreiben.

I have exactly that problem with a USB memory stick (aka 'removable
drive'). Any pointers appreciated.


Wilbert, ZL2BSJ



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Re: CF Speicherkarte

[pa3gcu]

On Friday 14 November 2003 22:40, Wilbert Knol wrote:
> On Fri, 14 Nov 2003, Klaus Heintzenberg wrote:
> > Als User kann ich zwar Daten von der Karte lesen, kann aber nicht darauf
> > schreiben (löschen)
> >
> > Als root jedoch lassen sich die Karten lesen und schreiben.
>
> I have exactly that problem with a USB memory stick (aka 'removable
> drive'). Any pointers appreciated.

Permissisons for devices need to be changed accordingly i belive;

>
> Wilbert, ZL2BSJ
>
>
>
> -
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-- 
If the Linux community is a bunch of theives because they
try to imitate windows programs, then the Windows community
is built on organized crime.

Regards Richard
pa3gcu@zeelandnet.nl
http://people.zeelandnet.nl/pa3gcu/



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Re: CF Speicherkarte

[Rodolfo Brasnarof]

---
On 14 Nov 2003 at 16:01, Klaus Heintzenberg wrote:

> Ich habe es geschafft, mir den vollen Zugriff auf die
> CompactFlash-Karte  zu verbauen.
> 
> Als User kann ich zwar Daten von der Karte lesen, kann aber nicht
> darauf schreiben (löschen)
> 
> Als root jedoch lassen sich die Karten lesen und schreiben.
> 
> 
> 
> Linux:/etc # ls /dev/sda1 -l
> 
> brwxrwxrw-    1 root     disk       8,   1 2003-09-23 17:59
> /dev/sda1
> 
> 
> 
> Was muss ich tun, um das zu reparieren?

Klaus, unfortunately some of us don't understand too much of 
German, and then we can't give any help. I't already a great 
effort for me to read and try to write in english, But I 
think it's the most international language nowadays. German 
is too difficult to me. Sorry.

I'm sorry if you don't speak english. But try to do your 
best.

Best wishes.

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Re: CF Speicherkarte

[Wilbert Knol]

On Sat, 15 Nov 2003, pa3gcu wrote:

> On Friday 14 November 2003 22:40, Wilbert Knol wrote:
> > On Fri, 14 Nov 2003, Klaus Heintzenberg wrote:
> > > Als User kann ich zwar Daten von der Karte lesen, kann aber nicht darauf
> > > schreiben (löschen)
> > >
> > > Als root jedoch lassen sich die Karten lesen und schreiben.
> >
> > I have exactly that problem with a USB memory stick (aka 'removable
> > drive'). Any pointers appreciated.
>
> Permissisons for devices need to be changed accordingly i belive;


The raw device file looks like this:

zl2bsj@zl2bsj:~> ls -l  /dev | grep sda1
brwxrwxrwx    1 root     disk       8,   1 2002-09-10 08:24 sda1

The mount point:
zl2bsj@zl2bsj:~> ls -l /media | grep sda1
drwxrwxrwx    2 root     root          160 2003-11-19 20:59 sda1

The /etc/fstab entry doesn't exist. It is created by the USB hotplug
agent. When it loads, the USB hot-plug agent alters the permissions
on the mount point such that only root has write access to the device.

I have by-passed /etc/fstab by spelling out the 'mount' command (with the
'user' option)  and it made no difference: I *must* be root to be able to
write to the USB removable drive :-(

Anyway, I probably shouldn't bore the Reflector users with this, as
it is not a ham issue, but it is something that has bugged me for a
long time. Reading Klaus's query prompted me.



Wilbert, ZL2BSJ



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Re: CF Speicherkarte

[pa3gcu]

On Wednesday 19 November 2003 10:22, Wilbert Knol wrote:
> The /etc/fstab entry doesn't exist. It is created by the USB hotplug
> agent. When it loads, the USB hot-plug agent alters the permissions
> on the mount point such that only root has write access to the device.

I did not know that, but i dont have devfs, i define my own fstab entry
and i can write to my usb device as user because i have changed permissions.

-- 
If the Linux community is a bunch of theives because they
try to imitate windows programs, then the Windows community
is built on organized crime.

Regards Richard
pa3gcu@zeelandnet.nl
http://people.zeelandnet.nl/pa3gcu/