> > case PI433_IOC_WR_TX_CFG:
> > if (copy_from_user(&instance->tx_cfg, argp,
> > sizeof(struct pi433_tx_cfg)))
> > return -EFAULT;
> > break;
>
> Btw, it looks so wrong to me that we copy partial data to
> &instance->tx_cfg... I'd really prefer copying it to a tmp buffer and
> then verifying it's corrent then memcpy()ing it to &instance->tx_cfg.
AFAIK this piece of code is not supposed to check passed tx config.
These checks are realised later by rf69_set_tx_cfg (called by
pi433_tx_thread) after the config has been written to the fifo by
pi433_write.
What kind of checks do you want to perform exactly ?
But, right, I prefer the idea of the temporary buffer too, and seeing the
rest of kernel code it seems to be the usual way to go.
Regards,
Hugo
--
Hugo Lefeuvre (hle) | www.owl.eu.com
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