lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 41 insertions, 0 deletions

diff --git a/lib/mlibc/sysdeps/ironclad/generic/pty.cpp b/lib/mlibc/sysdeps/ironclad/generic/pty.cpp
new file mode 100644
index 0000000..1626e4b
--- /dev/null
+++ b/lib/mlibc/sysdeps/ironclad/generic/pty.cpp
@@ -0,0 +1,41 @@
+#include <asm/ioctls.h>
+#include <bits/ensure.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pty.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/syscall.h>
+#include <sys/ioctl.h>
+
+int openpty(int *mfd, int *sfd, char *name, const struct termios *ios, const struct winsize *win) {
+	int ret;
+	int fds[2];
+	SYSCALL1(SYSCALL_OPENPTY, fds);
+	if (errno) {
+		return -1;
+	}
+	*mfd = fds[0];
+	*sfd = fds[1];
+
+	if (name != NULL) {
+		ret = ttyname_r(*mfd, name, (size_t)-1);
+		if (ret) {
+			return -1;
+		}
+	}
+	if (ios != NULL) {
+		ret = tcsetattr(*mfd, TCSANOW, ios);
+		if (ret) {
+			return -1;
+		}
+	}
+	if (win != NULL) {
+		ret = ioctl(*mfd, TIOCGWINSZ, win);
+		if (ret) {
+			return -1;
+		}
+	}
+	return ret;
+}