1 files changed, 4 insertions, 1 deletions
diff --git a/proto.h b/proto.h
index 7d2fe2a..3f1e05b 100644
--- a/proto.h
+++ b/proto.h
@@ -77,8 +77,10 @@ extern char *sys_errlist[];
 #if SETPGRP_VOID
 /* Smells like POSIX: should all be ok. */
 #else
-/* BSD: fake it. */
+/* Old BSD: fake it. */
 #define setpgid(pid, pgrp) setpgrp(pid, pgrp)
+#include <sys/ioctl.h>
+#define tcgetpgrp(fd) ioctl((fd), TIOCGPGRP)
 #define tcsetpgrp(fd, pgrp) ioctl((fd), TIOCSPGRP, &(pgrp))
 #endif
 
@@ -86,6 +88,7 @@ extern char *sys_errlist[];
 
 /* Nothing doing. */
 #define setpgid()
+#define tcgetpgrp()
 #define tcsetpgrp()
 
 #endif /*HAVE_SETPGRP */