diff options
| author | Kees Cook <keescook@chromium.org> | 2013-09-11 21:56:50 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-10-26 21:06:04 +0100 |
| commit | 9c8ea9f2d66ff437dd25da392a104947c703d975 (patch) | |
| tree | 80dae3abb25a3a09dfc7f53e0dc1e1b827a11af3 /include | |
| parent | a9f6e2b7e9f392b07d6773a846511b8f1b6d3ef0 (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>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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 f9523c8e728..19fe719ace3 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -718,6 +718,10 @@ 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); |