Import tcgetattr() and tcsetattr() functions from musl

Copied as is from the official musl git mirror
git://git.musl-libc.org/musl, commit 6fcb440d.

Original file locations:
* src/termios/tcgetattr.c
* src/termios/tcsetattr.c

Signed-off-by: Costin Lupu <costin.lupu@cs.pub.ro>
Reviewed-by: Felipe Huici <felipe.huici@neclab.eu>

diff --git a/musl-imported/src/termios/tcgetattr.c b/musl-imported/src/termios/tcgetattr.c
new file mode 100644 (file)
index 0000000..545a0bf
--- /dev/null
+++ b/musl-imported/src/termios/tcgetattr.c
@@ -0,0 +1,9 @@
+#include <termios.h>
+#include <sys/ioctl.h>
+
+int tcgetattr(int fd, struct termios *tio)
+{
+       if (ioctl(fd, TCGETS, tio))
+               return -1;
+       return 0;
+}

diff --git a/musl-imported/src/termios/tcsetattr.c b/musl-imported/src/termios/tcsetattr.c
new file mode 100644 (file)
index 0000000..94df18f
--- /dev/null
+++ b/musl-imported/src/termios/tcsetattr.c
@@ -0,0 +1,12 @@
+#include <termios.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+
+int tcsetattr(int fd, int act, const struct termios *tio)
+{
+       if (act < 0 || act > 2) {
+               errno = EINVAL;
+               return -1;
+       }
+       return ioctl(fd, TCSETS+act, tio);
+}