1 /* 2 * This file is auto-generated. Modifications will be lost. 3 * 4 * See https://android.googlesource.com/platform/bionic/+/master/libc/kernel/ 5 * for more information. 6 */ 7 #ifndef _UAPI_ASM_GENERIC_IOCTL_H 8 #define _UAPI_ASM_GENERIC_IOCTL_H 9 #define _IOC_NRBITS 8 10 #define _IOC_TYPEBITS 8 11 #ifndef _IOC_SIZEBITS 12 #define _IOC_SIZEBITS 14 13 #endif 14 #ifndef _IOC_DIRBITS 15 #define _IOC_DIRBITS 2 16 #endif 17 #define _IOC_NRMASK ((1 << _IOC_NRBITS) - 1) 18 #define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS) - 1) 19 #define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS) - 1) 20 #define _IOC_DIRMASK ((1 << _IOC_DIRBITS) - 1) 21 #define _IOC_NRSHIFT 0 22 #define _IOC_TYPESHIFT (_IOC_NRSHIFT + _IOC_NRBITS) 23 #define _IOC_SIZESHIFT (_IOC_TYPESHIFT + _IOC_TYPEBITS) 24 #define _IOC_DIRSHIFT (_IOC_SIZESHIFT + _IOC_SIZEBITS) 25 #ifndef _IOC_NONE 26 #define _IOC_NONE 0U 27 #endif 28 #ifndef _IOC_WRITE 29 #define _IOC_WRITE 1U 30 #endif 31 #ifndef _IOC_READ 32 #define _IOC_READ 2U 33 #endif 34 #define _IOC(dir,type,nr,size) (((dir) << _IOC_DIRSHIFT) | ((type) << _IOC_TYPESHIFT) | ((nr) << _IOC_NRSHIFT) | ((size) << _IOC_SIZESHIFT)) 35 #define _IOC_TYPECHECK(t) (sizeof(t)) 36 #define _IO(type,nr) _IOC(_IOC_NONE, (type), (nr), 0) 37 #define _IOR(type,nr,size) _IOC(_IOC_READ, (type), (nr), (_IOC_TYPECHECK(size))) 38 #define _IOW(type,nr,size) _IOC(_IOC_WRITE, (type), (nr), (_IOC_TYPECHECK(size))) 39 #define _IOWR(type,nr,size) _IOC(_IOC_READ | _IOC_WRITE, (type), (nr), (_IOC_TYPECHECK(size))) 40 #define _IOR_BAD(type,nr,size) _IOC(_IOC_READ, (type), (nr), sizeof(size)) 41 #define _IOW_BAD(type,nr,size) _IOC(_IOC_WRITE, (type), (nr), sizeof(size)) 42 #define _IOWR_BAD(type,nr,size) _IOC(_IOC_READ | _IOC_WRITE, (type), (nr), sizeof(size)) 43 #define _IOC_DIR(nr) (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) 44 #define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK) 45 #define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK) 46 #define _IOC_SIZE(nr) (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK) 47 #define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT) 48 #define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT) 49 #define IOC_INOUT ((_IOC_WRITE | _IOC_READ) << _IOC_DIRSHIFT) 50 #define IOCSIZE_MASK (_IOC_SIZEMASK << _IOC_SIZESHIFT) 51 #define IOCSIZE_SHIFT (_IOC_SIZESHIFT) 52 #endif 53