18 #ifndef _COBALT_UAPI_KERNEL_PIPE_H 19 #define _COBALT_UAPI_KERNEL_PIPE_H 21 #define XNPIPE_IOCTL_BASE 'p' 23 #define XNPIPEIOC_GET_NRDEV _IOW(XNPIPE_IOCTL_BASE, 0, int) 24 #define XNPIPEIOC_IFLUSH _IO(XNPIPE_IOCTL_BASE, 1) 25 #define XNPIPEIOC_OFLUSH _IO(XNPIPE_IOCTL_BASE, 2) 26 #define XNPIPEIOC_FLUSH XNPIPEIOC_OFLUSH 27 #define XNPIPEIOC_SETSIG _IO(XNPIPE_IOCTL_BASE, 3) 29 #define XNPIPE_NORMAL 0x0 30 #define XNPIPE_URGENT 0x1 32 #define XNPIPE_IFLUSH 0x1 33 #define XNPIPE_OFLUSH 0x2 35 #define XNPIPE_MINOR_AUTO (-1)