In article <1eweg5v.pq4exjqjpiv4M%manu@netbsd.org>,
Emmanuel Dreyfus <p99dreyf@criens.u-psud.fr> wrote:
>>   | Interesting... Writing to writable files on a readonly filesystem is
>>   | dissallowed.
>> This shouldn't be surprising, writing to a device is not writing to the
>> filesystem that contains the inode for the device, it is writing to
>> wherever the device wants the data to be put (same for /dev/null /dev/tty
>> /dev/anything else).
>
>Maybe the solution would be to allow changing the owner like we allow
>changing the mtime? (cf below)
>
>>   | What happens to the mtime of the device? 
>> That's on the read only filesystem, so that can't be touched.
>
>It is changed, as is /dev/console mtime changed when you type on the
>console with a read-only /dev.
>
>But how is it able to change the mtime??? Shouldn't this be read-only?

I guess that this is a side-effect of the write succeeding.

christos