Export UBI map/unmap/is_mapped in userspace
cover Export UBI map/unmap/is_mapped in userspace
Hi,
These are three patch to make a usespace program able to use map/unmap operation and to query if a LEB is mapped.
We are trying to do an UBI based userspace filesystem (using fuse) and we needed these, but it could also be used for testing purpose. CONFIG_MTD_UBI_DEBUG_USERSPACE_IO is needed to enable theses functions.
Thanks
Hi,
Quoted 4 lines · Corentin Chary
These are three patch to make a usespace program able to use map/unmap operation and to query if a LEB is mapped.
We are trying to do an UBI based userspace filesystem (using fuse) and we needed these, but it could also be used for testing purpose.
OK.
Quoted 1 line
CONFIG_MTD_UBI_DEBUG_USERSPACE_IOis needed to enable theses functions.
In your patches I do not see why these ioctl's are enabled only if the CONFIG_MTD_UBI_DEBUG_USERSPACE_IO configuration option is switched on. It looks like the ioctl's are always enabled.
Well, you probably also need direct LEB write functionality, which is present only as a debugging option so far. We may make it non-debugging at some point, I guess. The reason why we disabled this is because we wanted to prevent dump users from doing stupid things.
Signature · 2 lines
Best regards, Artem Bityutskiy (Битюцкий Артём)
Quoted 4 lines
In your patches I do not see why these ioctl's are enabled only if the
CONFIG_MTD_UBI_DEBUG_USERSPACE_IOconfiguration option is switched on. It looks like the ioctl's are always enabled.
Look the litle "#endif" at the end, it's the one for "#ifdef CONFIG_MTD_UBI_DEBUG_USERSPACE_IO" used for UBI_IOCEBER
We make these using CONFIG_MTD_UBI_DEBUG_USERSPACE_IO only because direct write and erase use that too.
But if you make it non-debugging, it'll be easier for us.
Signature · 2 lines
Corentin Chary http://xf.iksaif.net