diff -ru openssh-10.0p1/openbsd-compat/bsd-openpty.c openssh-10.0p1-banan_os/openbsd-compat/bsd-openpty.c
--- openssh-10.0p1/openbsd-compat/bsd-openpty.c	2025-04-09 10:02:43.000000000 +0300
+++ openssh-10.0p1-banan_os/openbsd-compat/bsd-openpty.c	2025-08-16 21:40:00.830440398 +0300
@@ -192,6 +192,26 @@
 	}
 	return (0);
 
+#elif defined(__banan_os__)
+	/* POSIX-style pty code. */
+	if ((*amaster = posix_openpt(O_RDWR | O_NOCTTY)) == -1)
+		return (-1);
+	if (grantpt(*amaster) == -1)
+		return (-1);
+	if (unlockpt(*amaster) == -1)
+		return (-1);
+
+	const char* slavename = ptsname(*amaster);
+	if (slavename == NULL) {
+		close(*amaster);
+		return (-1);
+	}
+	if ((*aslave = open(slavename, O_RDWR | O_NOCTTY)) == -1) {
+		close(*amaster);
+		return (-1);
+	}
+	return (0);
+
 #else
 	/* BSD-style pty code. */
 	char ptbuf[64], ttbuf[64];