1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ***   To edit the content of this header, modify the corresponding
11 ***   source file (e.g. under external/kernel-headers/original/) then
12 ***   run bionic/libc/kernel/tools/update_all.py
13 ***
14 ***   Any manual change here will be lost the next time this script will
15 ***   be run. You've been warned!
16 ***
17 ****************************************************************************
18 ****************************************************************************/
19#ifndef _UAPI_ASM_GENERIC_IOCTL_H
20#define _UAPI_ASM_GENERIC_IOCTL_H
21#define _IOC_NRBITS 8
22#define _IOC_TYPEBITS 8
23#ifndef _IOC_SIZEBITS
24#define _IOC_SIZEBITS 14
25#endif
26#ifndef _IOC_DIRBITS
27#define _IOC_DIRBITS 2
28#endif
29#define _IOC_NRMASK ((1 << _IOC_NRBITS) - 1)
30#define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS) - 1)
31#define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS) - 1)
32#define _IOC_DIRMASK ((1 << _IOC_DIRBITS) - 1)
33#define _IOC_NRSHIFT 0
34#define _IOC_TYPESHIFT (_IOC_NRSHIFT + _IOC_NRBITS)
35#define _IOC_SIZESHIFT (_IOC_TYPESHIFT + _IOC_TYPEBITS)
36#define _IOC_DIRSHIFT (_IOC_SIZESHIFT + _IOC_SIZEBITS)
37#ifndef _IOC_NONE
38#define _IOC_NONE 0U
39#endif
40#ifndef _IOC_WRITE
41#define _IOC_WRITE 1U
42#endif
43#ifndef _IOC_READ
44#define _IOC_READ 2U
45#endif
46#define _IOC(dir,type,nr,size) (((dir) << _IOC_DIRSHIFT) | ((type) << _IOC_TYPESHIFT) | ((nr) << _IOC_NRSHIFT) | ((size) << _IOC_SIZESHIFT))
47#define _IOC_TYPECHECK(t) (sizeof(t))
48#define _IO(type,nr) _IOC(_IOC_NONE, (type), (nr), 0)
49#define _IOR(type,nr,size) _IOC(_IOC_READ, (type), (nr), (_IOC_TYPECHECK(size)))
50#define _IOW(type,nr,size) _IOC(_IOC_WRITE, (type), (nr), (_IOC_TYPECHECK(size)))
51#define _IOWR(type,nr,size) _IOC(_IOC_READ | _IOC_WRITE, (type), (nr), (_IOC_TYPECHECK(size)))
52#define _IOR_BAD(type,nr,size) _IOC(_IOC_READ, (type), (nr), sizeof(size))
53#define _IOW_BAD(type,nr,size) _IOC(_IOC_WRITE, (type), (nr), sizeof(size))
54#define _IOWR_BAD(type,nr,size) _IOC(_IOC_READ | _IOC_WRITE, (type), (nr), sizeof(size))
55#define _IOC_DIR(nr) (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK)
56#define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK)
57#define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK)
58#define _IOC_SIZE(nr) (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK)
59#define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT)
60#define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT)
61#define IOC_INOUT ((_IOC_WRITE | _IOC_READ) << _IOC_DIRSHIFT)
62#define IOCSIZE_MASK (_IOC_SIZEMASK << _IOC_SIZESHIFT)
63#define IOCSIZE_SHIFT (_IOC_SIZESHIFT)
64#endif
65