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-rw-r--r--linux-user/nios2/termbits.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/linux-user/nios2/termbits.h b/linux-user/nios2/termbits.h
index b64ba974cf..f9f80f0f37 100644
--- a/linux-user/nios2/termbits.h
+++ b/linux-user/nios2/termbits.h
@@ -187,6 +187,8 @@ struct target_termios {
         /* Get Pty Number (of pty-mux device) */
 #define TARGET_TIOCSPTLCK       TARGET_IOW('T', 0x31, int)
         /* Lock/unlock Pty */
+#define TARGET_TIOCGPTPEER      TARGET_IO('T', 0x41)
+        /* Safely open the slave */
 
 #define TARGET_FIONCLEX         0x5450  /* these numbers need to be adjusted. */
 #define TARGET_FIOCLEX          0x5451