feat: devfs: handling unit size in POSIX RW request

POSIX.1 says:
>  read() attempts to read up to count bytes from file descriptor fd
>  into the buffer starting at buf.

On the other hand, for rt_device_read, the `@size` is defined as the
number of unit (block size for blk device, otherwise one byte).

Changes:
- Transferred unit size from POSIX R/W(in bytes) to rt_device_R/W during
  request of file R/W operations.

Signed-off-by: Shell <[email protected]>

0 files changed, 0 insertions, 0 deletions