Userspace write to UBI partitions

[Ricard Wanderlof]

Is it possible to do a userspace write to a UBI volume as if it were plain 
flash memory, i.e. should I be able to do "cat somefile > /dev/ubi0_0" ? I 
get a 'Write Error: Operation not permitted' when I do this (Linux 2.6.35) 
but I'm pretty sure that I've used UBI volumes that way in the past, may 
have been with older kernels then.

Since there are ioctls for volume update and atomic logical ereasblock 
change, it would seem natural that writing to UBI volumes must be preceded 
by these ioctls, still I can't seem to see anywhere that doing a plain 
write would not be allowed, and as I say I'm pretty sure I've done so in 
the past.

/Ricard
-- 
Ricard Wolf Wanderlöf                           ricardw(at)axis.com
Axis Communications AB, Lund, Sweden            www.axis.com
Phone +46 46 272 2016                           Fax +46 46 13 61 30