Add a new HIDIOCGRAWCLIENTADDR ioctl to hidraw for retrieving the client address.
Signed-off-by: Frank Praznik <[email protected]> --- drivers/hid/hidraw.c | 19 +++++++++++++++++++ include/uapi/linux/hidraw.h | 1 + 2 files changed, 20 insertions(+) diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c index cb0137b..07c328b 100644 --- a/drivers/hid/hidraw.c +++ b/drivers/hid/hidraw.c @@ -447,6 +447,25 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd, -EFAULT : len; break; } + + if (_IOC_NR(cmd) == _IOC_NR(HIDIOCGRAWCLIENTADDR(0))) { + char addr_str[32]; + int len; + ret = snprintf(addr_str, sizeof(addr_str), + "%pMR", hid->client_addr); + if (ret < 0) + break; + else if (ret > sizeof(addr_str)-1) + len = sizeof(addr_str); + else + len = ret + 1; + + if (len > _IOC_SIZE(cmd)) + len = _IOC_SIZE(cmd); + ret = copy_to_user(user_arg, addr_str, len) ? + -EFAULT : len; + break; + } } ret = -ENOTTY; diff --git a/include/uapi/linux/hidraw.h b/include/uapi/linux/hidraw.h index f5b7329..5b6f4fa 100644 --- a/include/uapi/linux/hidraw.h +++ b/include/uapi/linux/hidraw.h @@ -38,6 +38,7 @@ struct hidraw_devinfo { /* The first byte of SFEATURE and GFEATURE is the report number */ #define HIDIOCSFEATURE(len) _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x06, len) #define HIDIOCGFEATURE(len) _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x07, len) +#define HIDIOCGRAWCLIENTADDR(len) _IOC(_IOC_READ, 'H', 0x08, len) #define HIDRAW_FIRST_MINOR 0 #define HIDRAW_MAX_DEVICES 64 -- 1.8.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
