Hello Faidon,
I've looked into it further and confirmed thatt he support for
arbitrary baud rates via <termios.h> was introduced in *glibc 2.42*.
However, most current Debian environments (including stable and testing)
are still using glibc versions *< *2.42, so the new support is not yet
available there.
Given this, we’d still need to rely on the <termbits.h>. But once Debian
moves to glibc 2.42, we can definitely consider simplifying the code by
switching to the standard <termios.h> API conditionally.
On 18/09/25 22:16, tshah wrote:
I had brought this up with upstream about a year ago. This is about
non-standard custom baud rates and platform differences, on either the
kernel side, glibc side, or both -- that part is unclear to me.
In the time since, glibc 2.41 was released, which includes a news entry
on <termios.h> gaining support for arbitrary baud rates, so perhaps the
right cross-platform fix here is to change the code to rely on that,
instead of using <termbits.h> directly. It needs a bit more research,
and ideally to run this by upstream as well, as I don't have any way to
test this particular functionality. Feel free to take this on, otherwise
I may find some time in the next few months to look at it.
