diff options
| author | Kees Cook <keescook@chromium.org> | 2013-09-11 21:56:50 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-01 09:10:51 -0700 |
| commit | 0049b62c9efc4ef23492976512d4722b3e63de45 (patch) | |
| tree | a098aec5808beb0937fdf3964e23742dd30066b2 /include | |
| parent | 62875332eafea9ee150a6037c0a1a20669e02aa1 (diff) | |
HID: provide a helper for validating hid reports
commit 331415ff16a12147d57d5c953f3a961b7ede348b upstream.
Many drivers need to validate the characteristics of their HID report
during initialization to avoid misusing the reports. This adds a common
helper to perform validation of the report exisitng, the field existing,
and the expected number of values within the field.
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/hid.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/hid.h b/include/linux/hid.h index 8c933a86cba..3572ecd29cc 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -737,6 +737,10 @@ void hid_output_report(struct hid_report *report, __u8 *data); struct hid_device *hid_allocate_device(void); struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id); int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size); +struct hid_report *hid_validate_values(struct hid_device *hid, + unsigned int type, unsigned int id, + unsigned int field_index, + unsigned int report_counts); int hid_check_keys_pressed(struct hid_device *hid); int hid_connect(struct hid_device *hid, unsigned int connect_mask); void hid_disconnect(struct hid_device *hid); |