--- origsrc/util-linux-2.40.2/term-utils/agetty.c	2024-07-04 00:54:41.396241100 -0700
+++ src/util-linux-2.40.2/term-utils/agetty.c	2024-10-24 21:24:07.465151300 -0700
@@ -83,7 +83,7 @@
 #ifdef __linux__
 #  include <sys/kd.h>
 #  define USE_SYSLOG
-#elif defined(__GNU__)
+#elif defined(__GNU__) || defined(__CYGWIN__)
 #  define USE_SYSLOG
 #endif
 
@@ -1029,7 +1029,9 @@ static void update_utmp(struct options *
 	ut.ut_tv.tv_sec = t;
 	ut.ut_type = LOGIN_PROCESS;
 	ut.ut_pid = pid;
+#ifndef __CYGWIN__
 	ut.ut_session = sid;
+#endif
 
 	pututxline(&ut);
 	endutxent();
@@ -1101,8 +1103,12 @@ static void open_tty(const char *tty, st
 
 		if (op->flags & F_HANGUP) {
 
+#ifdef TIOCNOTTY
 			if (ioctl(fd, TIOCNOTTY))
 				debug("TIOCNOTTY ioctl failed\n");
+#else
+			setsid();
+#endif
 
 			/*
 			 * Let's close all file descriptors before vhangup
@@ -2349,11 +2355,11 @@ static void termio_final(struct options
 	tp->c_cc[VQUIT] = DEF_QUIT;
 	tp->c_cc[VEOF] = DEF_EOF;
 	tp->c_cc[VEOL] = DEF_EOL;
-#ifdef __linux__
+#if defined(__linux__) || defined(__CYGWIN__)
 	tp->c_cc[VSWTC] = DEF_SWITCH;
 #elif defined(VSWTCH)
 	tp->c_cc[VSWTCH] = DEF_SWITCH;
-#endif				/* __linux__ */
+#endif				/* __linux__ || __CYGWIN__ */
 
 	/* Account for special characters seen in input. */
 	if (cp->eol == CR) {