1 files changed, 26 insertions, 2 deletions
diff --git a/src/termios/tcsetattr.c b/src/termios/tcsetattr.c
index b68652ad..a40439a2 100644
--- a/src/termios/tcsetattr.c
+++ b/src/termios/tcsetattr.c
@@ -1,9 +1,33 @@
 #include <termios.h>
+#include <errno.h>
+#include "_termios.h"
 
 int tcsetattr(int fildes, int optional_actions, struct termios *termios_p)
 {
-	(void)optional_actions; (void)termios_p;
-	return fildes;
+	int ret = -1;
+	struct kernel_termios kt;
+	utok(kt, *termios_p);
+
+	switch (optional_actions) {
+	case TCSANOW:
+		ret = ioctl(fildes, TCSETS, &kt);
+		break;
+
+	case TCSADRAIN:
+		ret = ioctl(fildes, TCSETSW, &kt);
+		break;
+
+	case TCSAFLUSH:
+		ret = ioctl(fildes, TCSETSF, &kt);
+		break;
+
+	default:
+		errno = EINVAL;
+		return -1;
+	}
+
+	ktou(*termios_p, kt);
+	return ret;
 }
 /*
 POSIX(1)