X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=linux_termios.c;h=3630e5758ae355ff823237a5ca39acda2cee8257;hb=277f832a6a15cf54cfb1a45cc7f1462951bf42cd;hp=68c98e002f16ec7dd0c6b5ffbac1d87e4a4d5ff5;hpb=7a6d2196e043a7de86a5675f9fffa0ff0ec33e72;p=libserialport.git
diff --git a/linux_termios.c b/linux_termios.c
index 68c98e0..3630e57 100644
--- a/linux_termios.c
+++ b/linux_termios.c
@@ -17,39 +17,58 @@
* along with this program. If not, see .
*/
+/*
+ * 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
+#include
#include
#include "linux_termios.h"
-int get_termios_get_ioctl(void)
+SP_PRIV unsigned long get_termios_get_ioctl(void)
{
-#ifdef HAVE_TERMIOS2
+#ifdef HAVE_STRUCT_TERMIOS2
return TCGETS2;
#else
return TCGETS;
#endif
}
-int get_termios_set_ioctl(void)
+SP_PRIV unsigned long get_termios_set_ioctl(void)
{
-#ifdef HAVE_TERMIOS2
+#ifdef HAVE_STRUCT_TERMIOS2
return TCSETS2;
#else
return TCSETS;
#endif
}
-int get_termios_size(void)
+SP_PRIV size_t get_termios_size(void)
{
-#ifdef HAVE_TERMIOS2
+#ifdef HAVE_STRUCT_TERMIOS2
return sizeof(struct termios2);
#else
return sizeof(struct termios);
#endif
}
-int get_termios_speed(void *data)
+#if (defined(HAVE_TERMIOS_SPEED) || defined(HAVE_TERMIOS2_SPEED)) && HAVE_DECL_BOTHER
+SP_PRIV int get_termios_speed(void *data)
{
-#ifdef HAVE_TERMIOS2
+#ifdef HAVE_STRUCT_TERMIOS2
struct termios2 *term = (struct termios2 *) data;
#else
struct termios *term = (struct termios *) data;
@@ -60,9 +79,9 @@ int get_termios_speed(void *data)
return term->c_ispeed;
}
-void set_termios_speed(void *data, int speed)
+SP_PRIV void set_termios_speed(void *data, int speed)
{
-#ifdef HAVE_TERMIOS2
+#ifdef HAVE_STRUCT_TERMIOS2
struct termios2 *term = (struct termios2 *) data;
#else
struct termios *term = (struct termios *) data;
@@ -71,3 +90,40 @@ void set_termios_speed(void *data, int speed)
term->c_cflag |= BOTHER;
term->c_ispeed = term->c_ospeed = speed;
}
+#endif
+
+#ifdef HAVE_STRUCT_TERMIOX
+SP_PRIV size_t get_termiox_size(void)
+{
+ return sizeof(struct termiox);
+}
+
+SP_PRIV int get_termiox_flow(void *data, int *rts, int *cts, int *dtr, int *dsr)
+{
+ struct termiox *termx = (struct termiox *) data;
+ int flags = 0;
+
+ *rts = (termx->x_cflag & RTSXOFF);
+ *cts = (termx->x_cflag & CTSXON);
+ *dtr = (termx->x_cflag & DTRXOFF);
+ *dsr = (termx->x_cflag & DSRXON);
+
+ return flags;
+}
+
+SP_PRIV void set_termiox_flow(void *data, int rts, int cts, int dtr, int dsr)
+{
+ struct termiox *termx = (struct termiox *) data;
+
+ termx->x_cflag &= ~(RTSXOFF | CTSXON | DTRXOFF | DSRXON);
+
+ if (rts)
+ termx->x_cflag |= RTSXOFF;
+ if (cts)
+ termx->x_cflag |= CTSXON;
+ if (dtr)
+ termx->x_cflag |= DTRXOFF;
+ if (dsr)
+ termx->x_cflag |= DSRXON;
+}
+#endif