Add a "fork" of musl as //fusl.

fusl/src/legacy/getpass.c

Index: fusl/src/legacy/getpass.c
diff --git a/fusl/src/legacy/getpass.c b/fusl/src/legacy/getpass.c
new file mode 100644
index 0000000000000000000000000000000000000000..15ab9851e8f886d52187cf8910619b08f63cb5bc
--- /dev/null
+++ b/fusl/src/legacy/getpass.c
@@ -0,0 +1,40 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <termios.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+
+char *getpass(const char *prompt)
+{
+	int fd;
+	struct termios s, t;
+	ssize_t l;
+	static char password[128];
+
+	if ((fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_CLOEXEC)) < 0) return 0;
+
+	tcgetattr(fd, &t);
+	s = t;
+	t.c_lflag &= ~(ECHO|ISIG);
+	t.c_lflag |= ICANON;
+	t.c_iflag &= ~(INLCR|IGNCR);
+	t.c_iflag |= ICRNL;
+	tcsetattr(fd, TCSAFLUSH, &t);
+	tcdrain(fd);
+
+	dprintf(fd, "%s", prompt);
+
+	l = read(fd, password, sizeof password);
+	if (l >= 0) {
+		if (l > 0 && password[l-1] == '\n') l--;
+		password[l] = 0;
+	}
+
+	tcsetattr(fd, TCSAFLUSH, &s);
+
+	dprintf(fd, "\n");
+	close(fd);
+
+	return l<0 ? 0 : password;
+}