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FIONBIO9include/asm-alpha/ioctls.h#define FIONBIO    _IOW('f', 126, int)
FIONBIO41include/asm-i386/ioctls.h#define FIONBIO    0x5421
FIONBIO48include/asm-mips/ioctls.h#define FIONBIO    0x667e
FIONBIO44include/asm-ppc/termios.h#define FIONBIO    _IOW('f', 126, int)
FIONBIO118include/asm-sparc/termios.h#define FIONBIO    _IOW('f', 126, int)