tree e7527ddf9d7a128ed80c75a27a58ab5fc2e19a65
parent e1ad43c80284ec97043174f228904ed01793ce8d
author Marek Behún <marek.behun@nic.cz> 1634484995 +0200
committer Simon Glass <sjg@chromium.org> 1634842248 -0600

env: Make return value of env_get_f() behave like sprintf() on success

Currently the env_get_f() function's return value behaves weirdly: it
returns the number of bytes written into `buf`, but whether this is
excluding the terminating NULL-byte or including it depends on whether
there was enough space in `buf`.

Change the function to always return the actual length of the value of
the environment variable (excluding the terminating NULL-byte) on
success. This makes it behave like sprintf().

All users of this function in U-Boot are compatible with this change.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>