forked from luck/tmp_suning_uos_patched
HID: add phys and name ioctls to hidraw
The hiddev interface provides ioctl() calls which can be used to obtain phys and raw name of the underlying device. Add the corresponding support also into hidraw. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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parent
6bbe586fd4
commit
9188e79ec3
@ -265,6 +265,34 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd,
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break;
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}
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default:
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{
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struct hid_device *hid = dev->hid;
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if (_IOC_TYPE(cmd) != 'H' || _IOC_DIR(cmd) != _IOC_READ)
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return -EINVAL;
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if (_IOC_NR(cmd) == _IOC_NR(HIDIOCGRAWNAME(0))) {
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int len;
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if (!hid->name)
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return 0;
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len = strlen(hid->name) + 1;
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if (len > _IOC_SIZE(cmd))
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len = _IOC_SIZE(cmd);
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return copy_to_user(user_arg, hid->name, len) ?
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-EFAULT : len;
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}
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if (_IOC_NR(cmd) == _IOC_NR(HIDIOCGRAWPHYS(0))) {
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int len;
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if (!hid->phys)
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return 0;
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len = strlen(hid->phys) + 1;
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if (len > _IOC_SIZE(cmd))
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len = _IOC_SIZE(cmd);
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return copy_to_user(user_arg, hid->phys, len) ?
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-EFAULT : len;
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}
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}
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ret = -ENOTTY;
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}
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unlock_kernel();
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@ -33,6 +33,8 @@ struct hidraw_devinfo {
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#define HIDIOCGRDESCSIZE _IOR('H', 0x01, int)
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#define HIDIOCGRDESC _IOR('H', 0x02, struct hidraw_report_descriptor)
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#define HIDIOCGRAWINFO _IOR('H', 0x03, struct hidraw_devinfo)
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#define HIDIOCGRAWNAME(len) _IOC(_IOC_READ, 'H', 0x04, len)
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#define HIDIOCGRAWPHYS(len) _IOC(_IOC_READ, 'H', 0x05, len)
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#define HIDRAW_FIRST_MINOR 0
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#define HIDRAW_MAX_DEVICES 64
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