Re: [gentoo-user] USB permissions glitch

[Philip Webb]

081201 Neil Bothwick wrote:
> On Mon, 1 Dec 2008 07:10:00 -0500, Philip Webb wrote:
>> in /etc/fstab I have :
>> '/dev/sdb1 /mnt/usb auto noauto,user,umask=000 0 0'
>> I reformat USB sticks to a Linux fs, as 'fat' seems to reduce capacity.
> You didn't mention that before: it was reasonable to assume
> that you were using FAT because you have a umask option in fstab,
> which also does not apply to ext2.

Thanks(1) : I hadn't noticed that.  I have  1  USB stick with 'fat',
in case I want to exchange files with a M$ machine (more below),
hence the 'auto' entry in the filesystem column.

> Are you setting the permissions of the mount point
> with the device mounted or unmounted ?
> When the device is mounted, the mount point assumes
> the ownership & permissions of the root of the device's filesystem.
> You need to chmod/chown it with the stick mounted.

Thanks(2) : indeed ! -- I reformatted  2  sticks to 'ext2' recently
& that seems to be what undid the previous behaviour: having done 'chmod'
with each stick mounted, the permissions persist when I remount them.
However, I can't similarly change the permission for the 'fat' stick,
presumably because M$ formats don't understand Linux permissions.

I will make appropriate notes ... (smile)

-- 
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