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unix: add HIDRAW ioctls

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This change adds (most) of the ioctl API for the Linux HIDRAW interface.
Reading and writing non-numbered HID reports is done using the read and
write system calls respectively.

Some of the HIDIOC* request numbers are exported directly while others
are kept unexported. This is because some of the #defines require a len
attribute that doesn't have a specific well defined value.

Wrapper types are added for most of the request numbers as is standard.
No wrapper is added for HIDIOCGRDESCSIZE as it would just be
IoctlGetUint32.

The HIDIOC[GS]FEATURE, HIDIOC[GS]INPUT and HIDIOC[GS]OUTPUT request
numbers, which are required for numbered HID reports, are entirely
ommitted as the len attribute has to be a runtime variable. These could
be added later by doing something like
 `HIDIOCGFEATURE(0) | (len << _IOC_SIZESHIFT)`,
with care taken that len doesn't overflow _IOC_XSIZEMASK.

Outdated documentation for the HIDRAW interface is available at:
https://www.kernel.org/doc/Documentation/hid/hidraw.txt.

Change-Id: I2ae5060f0f46150f6fb52959c2e55f50927c1f69
Reviewed-on: https://go-review.googlesource.com/c/sys/+/289169
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
This commit is contained in:
Tom Thorogood
2021-02-03 21:19:46 +10:30
committed by Tobias Klauser
parent d8cc79f4ae
commit b80eb88b80
18 changed files with 153 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
unix/linux/types.go
View File

@@ -96,6 +96,7 @@ struct termios2 {
#include <linux/fsverity.h>
#include <linux/genetlink.h>
#include <linux/hdreg.h>
#include <linux/hidraw.h>
#include <linux/icmpv6.h>
#include <linux/if_alg.h>
#include <linux/if_bridge.h>
@@ -3633,3 +3634,8 @@ const (
ETHTOOL_A_TUNNEL_INFO_UDP_PORTS = C.ETHTOOL_A_TUNNEL_INFO_UDP_PORTS
ETHTOOL_A_TUNNEL_INFO_MAX = C.ETHTOOL_A_TUNNEL_INFO_MAX
)
type (
HIDRawReportDescriptor C.struct_hidraw_report_descriptor
HIDRawDevInfo C.struct_hidraw_devinfo
)

20
unix/mkerrors.sh
View File

@@ -214,6 +214,7 @@ struct ltchars {
#include <linux/fsverity.h>
#include <linux/genetlink.h>
#include <linux/hdreg.h>
#include <linux/hidraw.h>
#include <linux/icmpv6.h>
#include <linux/if.h>
#include <linux/if_addr.h>
@@ -224,6 +225,7 @@ struct ltchars {
#include <linux/if_tun.h>
#include <linux/if_packet.h>
#include <linux/if_xdp.h>
#include <linux/input.h>
#include <linux/kexec.h>
#include <linux/keyctl.h>
#include <linux/loop.h>
@@ -300,6 +302,17 @@ struct ltchars {
// Including linux/l2tp.h here causes conflicts between linux/in.h
// and netinet/in.h included via net/route.h above.
#define IPPROTO_L2TP 115
// Copied from linux/hid.h.
// Keep in sync with the size of the referenced fields.
#define _HIDIOCGRAWNAME_LEN 128 // sizeof_field(struct hid_device, name)
#define _HIDIOCGRAWPHYS_LEN 64 // sizeof_field(struct hid_device, phys)
#define _HIDIOCGRAWUNIQ_LEN 64 // sizeof_field(struct hid_device, uniq)
#define _HIDIOCGRAWNAME HIDIOCGRAWNAME(_HIDIOCGRAWNAME_LEN)
#define _HIDIOCGRAWPHYS HIDIOCGRAWPHYS(_HIDIOCGRAWPHYS_LEN)
#define _HIDIOCGRAWUNIQ HIDIOCGRAWUNIQ(_HIDIOCGRAWUNIQ_LEN)
'
includes_NetBSD='
@@ -447,6 +460,8 @@ ccflags="$@"
$2 !~ /^EPROC_/ &&
$2 !~ /^EQUIV_/ &&
$2 !~ /^EXPR_/ &&
$2 !~ /^EVIOC/ &&
$2 !~ /^EV_/ &&
$2 ~ /^E[A-Z0-9_]+$/ ||
$2 ~ /^B[0-9_]+$/ ||
$2 ~ /^(OLD|NEW)DEV$/ ||
@@ -481,7 +496,7 @@ ccflags="$@"
$2 ~ /^LOCK_(SH|EX|NB|UN)$/ ||
$2 ~ /^LO_(KEY|NAME)_SIZE$/ ||
$2 ~ /^LOOP_(CLR|CTL|GET|SET)_/ ||
$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|MCAST|EVFILT|NOTE|EV|SHUT|PROT|MAP|MFD|T?PACKET|MSG|SCM|MCL|DT|MADV|PR|LOCAL)_/ ||
$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|MCAST|EVFILT|NOTE|SHUT|PROT|MAP|MFD|T?PACKET|MSG|SCM|MCL|DT|MADV|PR|LOCAL)_/ ||
$2 ~ /^TP_STATUS_/ ||
$2 ~ /^FALLOC_/ ||
$2 == "ICMPV6_FILTER" ||
@@ -571,6 +586,9 @@ ccflags="$@"
$2 ~ /^W[A-Z0-9]+$/ ||
$2 ~/^PPPIOC/ ||
$2 ~ /^FAN_|FANOTIFY_/ ||
$2 == "HID_MAX_DESCRIPTOR_SIZE" ||
$2 ~ /^_?HIDIOC/ ||
$2 ~ /^BUS_(USB|HIL|BLUETOOTH|VIRTUAL)$/ ||
$2 ~ /^BLK[A-Z]*(GET$|SET$|BUF$|PART$|SIZE)/ {printf("\t%s = C.%s\n", $2, $2)}
$2 ~ /^__WCOREFLAG$/ {next}
$2 ~ /^__W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", substr($2,3), $2)}

30
unix/syscall_linux.go
View File

@@ -153,6 +153,36 @@ func IoctlWatchdogKeepalive(fd int) error {
return ioctl(fd, WDIOC_KEEPALIVE, 0)
}
func IoctlHIDGetDesc(fd int, value *HIDRawReportDescriptor) error {
err := ioctl(fd, HIDIOCGRDESC, uintptr(unsafe.Pointer(value)))
runtime.KeepAlive(value)
return err
}
func IoctlHIDGetRawInfo(fd int) (*HIDRawDevInfo, error) {
var value HIDRawDevInfo
err := ioctl(fd, HIDIOCGRAWINFO, uintptr(unsafe.Pointer(&value)))
return &value, err
}
func IoctlHIDGetRawName(fd int) (string, error) {
var value [_HIDIOCGRAWNAME_LEN]byte
err := ioctl(fd, _HIDIOCGRAWNAME, uintptr(unsafe.Pointer(&value[0])))
return ByteSliceToString(value[:]), err
}
func IoctlHIDGetRawPhys(fd int) (string, error) {
var value [_HIDIOCGRAWPHYS_LEN]byte
err := ioctl(fd, _HIDIOCGRAWPHYS, uintptr(unsafe.Pointer(&value[0])))
return ByteSliceToString(value[:]), err
}
func IoctlHIDGetRawUniq(fd int) (string, error) {
var value [_HIDIOCGRAWUNIQ_LEN]byte
err := ioctl(fd, _HIDIOCGRAWUNIQ, uintptr(unsafe.Pointer(&value[0])))
return ByteSliceToString(value[:]), err
}
//sys Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags int) (err error)
func Link(oldpath string, newpath string) (err error) {

8
unix/zerrors_linux.go
View File

@@ -245,6 +245,10 @@ const (
BS0 = 0x0
BTRFS_SUPER_MAGIC = 0x9123683e
BTRFS_TEST_MAGIC = 0x73727279
BUS_BLUETOOTH = 0x5
BUS_HIL = 0x4
BUS_USB = 0x3
BUS_VIRTUAL = 0x6
CAN_BCM = 0x2
CAN_EFF_FLAG = 0x80000000
CAN_EFF_ID_BITS = 0x1d
@@ -964,6 +968,7 @@ const (
HDIO_SET_XFER = 0x306
HDIO_TRISTATE_HWIF = 0x31b
HDIO_UNREGISTER_HWIF = 0x32a
HID_MAX_DESCRIPTOR_SIZE = 0x1000
HOSTFS_SUPER_MAGIC = 0xc0ffee
HPFS_SUPER_MAGIC = 0xf995e849
HUGETLBFS_MAGIC = 0x958458f6
@@ -2736,6 +2741,9 @@ const (
Z3FOLD_MAGIC = 0x33
ZONEFS_MAGIC = 0x5a4f4653
ZSMALLOC_MAGIC = 0x58295829
_HIDIOCGRAWNAME_LEN = 0x80
_HIDIOCGRAWPHYS_LEN = 0x40
_HIDIOCGRAWUNIQ_LEN = 0x40
)
// Errors

6
unix/zerrors_linux_386.go
View File

@@ -94,6 +94,9 @@ const (
F_SETOWN = 0x8
F_UNLCK = 0x2
F_WRLCK = 0x1
HIDIOCGRAWINFO = 0x80084803
HIDIOCGRDESC = 0x90044802
HIDIOCGRDESCSIZE = 0x80044801
HUPCL = 0x400
ICANON = 0x2
IEXTEN = 0x8000
@@ -486,6 +489,9 @@ const (
X86_FXSR_MAGIC = 0x0
XCASE = 0x4
XTABS = 0x1800
_HIDIOCGRAWNAME = 0x80804804
_HIDIOCGRAWPHYS = 0x80404805
_HIDIOCGRAWUNIQ = 0x80404808
)
// Errors

6
unix/zerrors_linux_amd64.go
View File

@@ -94,6 +94,9 @@ const (
F_SETOWN = 0x8
F_UNLCK = 0x2
F_WRLCK = 0x1
HIDIOCGRAWINFO = 0x80084803
HIDIOCGRDESC = 0x90044802
HIDIOCGRDESCSIZE = 0x80044801
HUPCL = 0x400
ICANON = 0x2
IEXTEN = 0x8000
@@ -486,6 +489,9 @@ const (
WORDSIZE = 0x40
XCASE = 0x4
XTABS = 0x1800
_HIDIOCGRAWNAME = 0x80804804
_HIDIOCGRAWPHYS = 0x80404805
_HIDIOCGRAWUNIQ = 0x80404808
)
// Errors

6
unix/zerrors_linux_arm.go
View File

@@ -93,6 +93,9 @@ const (
F_SETOWN = 0x8
F_UNLCK = 0x2
F_WRLCK = 0x1
HIDIOCGRAWINFO = 0x80084803
HIDIOCGRDESC = 0x90044802
HIDIOCGRDESCSIZE = 0x80044801
HUPCL = 0x400
ICANON = 0x2
IEXTEN = 0x8000
@@ -492,6 +495,9 @@ const (
WORDSIZE = 0x20
XCASE = 0x4
XTABS = 0x1800
_HIDIOCGRAWNAME = 0x80804804
_HIDIOCGRAWPHYS = 0x80404805
_HIDIOCGRAWUNIQ = 0x80404808
)
// Errors

6
unix/zerrors_linux_arm64.go
View File

@@ -96,6 +96,9 @@ const (
F_SETOWN = 0x8
F_UNLCK = 0x2
F_WRLCK = 0x1
HIDIOCGRAWINFO = 0x80084803
HIDIOCGRDESC = 0x90044802
HIDIOCGRDESCSIZE = 0x80044801
HUPCL = 0x400
ICANON = 0x2
IEXTEN = 0x8000
@@ -483,6 +486,9 @@ const (
WORDSIZE = 0x40
XCASE = 0x4
XTABS = 0x1800
_HIDIOCGRAWNAME = 0x80804804
_HIDIOCGRAWPHYS = 0x80404805
_HIDIOCGRAWUNIQ = 0x80404808
)
// Errors

6
unix/zerrors_linux_mips.go
View File

@@ -93,6 +93,9 @@ const (
F_SETOWN = 0x18
F_UNLCK = 0x2
F_WRLCK = 0x1
HIDIOCGRAWINFO = 0x40084803
HIDIOCGRDESC = 0x50044802
HIDIOCGRDESCSIZE = 0x40044801
HUPCL = 0x400
ICANON = 0x2
IEXTEN = 0x100
@@ -488,6 +491,9 @@ const (
WORDSIZE = 0x20
XCASE = 0x4
XTABS = 0x1800
_HIDIOCGRAWNAME = 0x40804804
_HIDIOCGRAWPHYS = 0x40404805
_HIDIOCGRAWUNIQ = 0x40404808
)
// Errors

6
unix/zerrors_linux_mips64.go
View File

@@ -93,6 +93,9 @@ const (
F_SETOWN = 0x18
F_UNLCK = 0x2
F_WRLCK = 0x1
HIDIOCGRAWINFO = 0x40084803
HIDIOCGRDESC = 0x50044802
HIDIOCGRDESCSIZE = 0x40044801
HUPCL = 0x400
ICANON = 0x2
IEXTEN = 0x100
@@ -488,6 +491,9 @@ const (
WORDSIZE = 0x40
XCASE = 0x4
XTABS = 0x1800
_HIDIOCGRAWNAME = 0x40804804
_HIDIOCGRAWPHYS = 0x40404805
_HIDIOCGRAWUNIQ = 0x40404808
)
// Errors

6
unix/zerrors_linux_mips64le.go
View File

@@ -93,6 +93,9 @@ const (
F_SETOWN = 0x18
F_UNLCK = 0x2
F_WRLCK = 0x1
HIDIOCGRAWINFO = 0x40084803
HIDIOCGRDESC = 0x50044802
HIDIOCGRDESCSIZE = 0x40044801
HUPCL = 0x400
ICANON = 0x2
IEXTEN = 0x100
@@ -488,6 +491,9 @@ const (
WORDSIZE = 0x40
XCASE = 0x4
XTABS = 0x1800
_HIDIOCGRAWNAME = 0x40804804
_HIDIOCGRAWPHYS = 0x40404805
_HIDIOCGRAWUNIQ = 0x40404808
)
// Errors

6
unix/zerrors_linux_mipsle.go
View File

@@ -93,6 +93,9 @@ const (
F_SETOWN = 0x18
F_UNLCK = 0x2
F_WRLCK = 0x1
HIDIOCGRAWINFO = 0x40084803
HIDIOCGRDESC = 0x50044802
HIDIOCGRDESCSIZE = 0x40044801
HUPCL = 0x400
ICANON = 0x2
IEXTEN = 0x100
@@ -488,6 +491,9 @@ const (
WORDSIZE = 0x20
XCASE = 0x4
XTABS = 0x1800
_HIDIOCGRAWNAME = 0x40804804
_HIDIOCGRAWPHYS = 0x40404805
_HIDIOCGRAWUNIQ = 0x40404808
)
// Errors

6
unix/zerrors_linux_ppc64.go
View File

@@ -93,6 +93,9 @@ const (
F_SETOWN = 0x8
F_UNLCK = 0x2
F_WRLCK = 0x1
HIDIOCGRAWINFO = 0x40084803
HIDIOCGRDESC = 0x50044802
HIDIOCGRDESCSIZE = 0x40044801
HUPCL = 0x4000
ICANON = 0x100
IEXTEN = 0x400
@@ -548,6 +551,9 @@ const (
WORDSIZE = 0x40
XCASE = 0x4000
XTABS = 0xc00
_HIDIOCGRAWNAME = 0x40804804
_HIDIOCGRAWPHYS = 0x40404805
_HIDIOCGRAWUNIQ = 0x40404808
)
// Errors

6
unix/zerrors_linux_ppc64le.go
View File

@@ -93,6 +93,9 @@ const (
F_SETOWN = 0x8
F_UNLCK = 0x2
F_WRLCK = 0x1
HIDIOCGRAWINFO = 0x40084803
HIDIOCGRDESC = 0x50044802
HIDIOCGRDESCSIZE = 0x40044801
HUPCL = 0x4000
ICANON = 0x100
IEXTEN = 0x400
@@ -548,6 +551,9 @@ const (
WORDSIZE = 0x40
XCASE = 0x4000
XTABS = 0xc00
_HIDIOCGRAWNAME = 0x40804804
_HIDIOCGRAWPHYS = 0x40404805
_HIDIOCGRAWUNIQ = 0x40404808
)
// Errors

6
unix/zerrors_linux_riscv64.go
View File

@@ -93,6 +93,9 @@ const (
F_SETOWN = 0x8
F_UNLCK = 0x2
F_WRLCK = 0x1
HIDIOCGRAWINFO = 0x80084803
HIDIOCGRDESC = 0x90044802
HIDIOCGRDESCSIZE = 0x80044801
HUPCL = 0x400
ICANON = 0x2
IEXTEN = 0x8000
@@ -473,6 +476,9 @@ const (
WORDSIZE = 0x40
XCASE = 0x4
XTABS = 0x1800
_HIDIOCGRAWNAME = 0x80804804
_HIDIOCGRAWPHYS = 0x80404805
_HIDIOCGRAWUNIQ = 0x80404808
)
// Errors

6
unix/zerrors_linux_s390x.go
View File

@@ -93,6 +93,9 @@ const (
F_SETOWN = 0x8
F_UNLCK = 0x2
F_WRLCK = 0x1
HIDIOCGRAWINFO = 0x80084803
HIDIOCGRDESC = 0x90044802
HIDIOCGRDESCSIZE = 0x80044801
HUPCL = 0x400
ICANON = 0x2
IEXTEN = 0x8000
@@ -546,6 +549,9 @@ const (
WORDSIZE = 0x40
XCASE = 0x4
XTABS = 0x1800
_HIDIOCGRAWNAME = 0x80804804
_HIDIOCGRAWPHYS = 0x80404805
_HIDIOCGRAWUNIQ = 0x80404808
)
// Errors

6
unix/zerrors_linux_sparc64.go
View File

@@ -97,6 +97,9 @@ const (
F_SETOWN = 0x6
F_UNLCK = 0x3
F_WRLCK = 0x2
HIDIOCGRAWINFO = 0x40084803
HIDIOCGRDESC = 0x50044802
HIDIOCGRDESCSIZE = 0x40044801
HUPCL = 0x400
ICANON = 0x2
IEXTEN = 0x8000
@@ -536,6 +539,9 @@ const (
WORDSIZE = 0x40
XCASE = 0x4
XTABS = 0x1800
_HIDIOCGRAWNAME = 0x40804804
_HIDIOCGRAWPHYS = 0x40404805
_HIDIOCGRAWUNIQ = 0x40404808
__TIOCFLUSH = 0x80047410
)

12
unix/ztypes_linux.go
View File

@@ -3682,3 +3682,15 @@ const (
ETHTOOL_A_TUNNEL_INFO_UDP_PORTS = 0x2
ETHTOOL_A_TUNNEL_INFO_MAX = 0x2
)
type (
HIDRawReportDescriptor struct {
Size uint32
Value [4096]uint8
}
HIDRawDevInfo struct {
Bustype uint32
Vendor int16
Product int16
}
)