Hello, Struct sgttyb contains 4 characters, not 6.
Samuel 2011-11-02 Samuel Thibault <samuel.thiba...@ens-lyon.org> * bits/ioctl-types.h (_IOT_sgttyb): Set number of chars to 4. diff --git a/bits/ioctl-types.h b/bits/ioctl-types.h index 58b78a6..ccfa4de 100644 --- a/bits/ioctl-types.h +++ b/bits/ioctl-types.h @@ -64,7 +64,7 @@ struct sgttyb }; #define _IOT_sgttyb /* Hurd ioctl type field. */ \ - _IOT (_IOTS (char), 6, _IOTS (short int), 1, 0, 0) + _IOT (_IOTS (char), 4, _IOTS (short int), 1, 0, 0) #if defined TIOCGWINSZ || defined TIOCSWINSZ /* Type of ARG for TIOCGWINSZ and TIOCSWINSZ requests. */