fs: ioctl: improve ioctl read to avoid allocating twice

Allocate memory for 'uc_string_t' with the proper size upfront and
use it's internal buffer as ioctl buffer. This avoids redundant
'ucv_string_new_length' calls and thus allocating memory a second time.

Also simplify the signature of the function, using a single parameter
for handling size and input buffer values.

Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
[simplify arguments, adjust documentation, prevent in-place string
 modifications]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

0 files changed, 0 insertions, 0 deletions