On Wed, Jun 21, 2023 at 03:51:00AM +0000, Avadhut Naik wrote: > From: Avadhut Naik <Avadhut.Naik@xxxxxxx> > > Currently, debugfs_create_blob() creates read-only debugfs binary blob > files. > > In some cases, however, userspace tools need to write variable length > data structures into predetermined memory addresses. An example is when > injecting Vendor-defined error types through the einj module. In such > cases, the functionality to write to these blob files in debugfs would > be desired since the mapping aspect can be handled within the modules > with userspace tools only needing to write into the blob files. > > Implement a write callback to enable writing to these blob files in > debugfs. > > Signed-off-by: Avadhut Naik <Avadhut.Naik@xxxxxxx> > Reviewed-by: Alexey Kardashevskiy <aik@xxxxxxx> Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
