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-rw-r--r--c/src/lib/include/sys/termios.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/c/src/lib/include/sys/termios.h b/c/src/lib/include/sys/termios.h
index 7cc28d7d38..199bb2aef2 100644
--- a/c/src/lib/include/sys/termios.h
+++ b/c/src/lib/include/sys/termios.h
@@ -181,6 +181,7 @@ int tcflow(int, int);
int tcflush(int, int);
int tcgetattr(int, struct termios *);
int tcsetattr(int, int, struct termios *);
+int tcdrain(int);
pid_t tcgetprgrp(int);
int tcsetprgrp(int, pid_t);
int tcsendbreak(int, int);