termios: fix raw mode initialization

Change-Id: Ibdf0b84fd3ef47c091a670b1cdd00edf2cde196d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5869
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

POSIX: add tcsetsid()

Change-Id: Ia8f41e417379dcaf4f976933cf91bb2de157bc72
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3376
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

POSIX: add tcgetsid()

Change-Id: If58141b4e56b7fe444460b6808e33abc5ea71f37
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3374
Reviewed-by: Axel Dörfler <axeld@pinc-software.de>

Fix some missing parentheses

* Problem found by gcc4.

Style fix.

Thanks to axel for watching!

Allow custom baud rates for FTDI serial ports

- Termios: cf{get,set}{i,o}speed can handle arbitrary speed values.
- The value is stored in the appropriate fields of the termios structure
in this case. The old constants (stored in the flags) are preserved
for BeOS binary compatibility.
- Adjust the FTDI FT232* driver to accept custom rates, by replacing the
hardcoded regster values with a function that will compute it
according to FTDI documentation (confirmed giving the same values for
the existing baudrates).

Introduce __set_errno() throughout libroot.

* add errno_private.h, which defines the __set_errno() macro with
and without tracing
* instead of setting errno manually, all libroot's code now invokes
__set_errno(), which makes it much easier to trace changes to errno
* redirect glibc's use of __set_errno() to our own version

Add cfmakeraw. Like cf{get/set}{i/o}speed, it iisn't POSIx standard but is used
often enough and simple enough to write that we should allow it.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42865 a95241bf-73f2-0310-859d-f6bbb57e9c96

Since the c_ispeed and c_ospeed fields are marked unused, and since I don't see
how one could actually apply different speeds, make cf{set|get}{i|o}speed() use
the c_cflag field with the CBAUD mask instead.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42160 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis:
* Check against maximum baud rate in cfset{i,o}speed().
* Changed some functions comments to doxygen style.
* Sorted speed macros in termios.h.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24647 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed src/kernel to src/system.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12359 a95241bf-73f2-0310-859d-f6bbb57e9c96

Introduce __set_errno() throughout libroot.

* add errno_private.h, which defines the __set_errno() macro with
and without tracing
* instead of setting errno manually, all libroot's code now invokes
__set_errno(), which makes it much easier to trace changes to errno
* redirect glibc's use of __set_errno() to our own version

Add cfmakeraw. Like cf{get/set}{i/o}speed, it iisn't POSIx standard but is used
often enough and simple enough to write that we should allow it.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42865 a95241bf-73f2-0310-859d-f6bbb57e9c96

Since the c_ispeed and c_ospeed fields are marked unused, and since I don't see
how one could actually apply different speeds, make cf{set|get}{i|o}speed() use
the c_cflag field with the CBAUD mask instead.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42160 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Vasilis Kaoutsis:
* Check against maximum baud rate in cfset{i,o}speed().
* Changed some functions comments to doxygen style.
* Sorted speed macros in termios.h.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24647 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed src/kernel to src/system.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12359 a95241bf-73f2-0310-859d-f6bbb57e9c96