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Document this madness.

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Martin Ling 2013-11-21 11:52:54 +00:00
parent 40978c2b41
commit 70518e4fdd
1 changed files with 16 additions and 0 deletions
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16
linux_termios.c
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@ -17,6 +17,22 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* At the time of writing, glibc does not support the Linux kernel interfaces
* for setting non-standard baud rates and flow control. We therefore have to
* prepare the correct ioctls ourselves, for which we need the declarations in
* linux/termios.h.
*
* We can't include linux/termios.h in serialport.c however, because its
* contents conflict with the termios.h provided by glibc. So this file exists
* to isolate the bits of code which use the kernel termios declarations.
*
* The details vary by architecture. Some architectures have c_ispeed/c_ospeed
* in struct termios, accessed with TCSETS/TCGETS. Others have these fields in
* struct termios2, accessed with TCSETS2/TCGETS2. Some architectures have the
* TCSETX/TCGETX ioctls used with struct termiox, others do not.
*/
#include <linux/termios.h>
#include "linux_termios.h"