add hid_get_report_desc_data() to access the raw report descriptor
data without needing to export the report_desc struct definition.

suggested by and ok anton@

When system calls indicate an error they return -1, not some arbitrary
value < 0. errno is only updated in this case. Change all (most?)
callers of syscalls to follow this better, and let's see if this strictness
helps us in the future.

revert previous, it was hardly tested and is causing too many issues too close to release.

as discussed with and ok mpi@ deraadt@

- port multiple report ID support for HID parser from FreeBSD code
(rev. 205728, 224511 and 225839)

- add hid_get_report_id(3) to get id of a descriptor.

- crank the major in shlib_version 3.0 -> 4.0

ok deraadt@, mpi@

knf + new interface: hid_start() is non-exit non-stderr spewing version of hid_init(); ok matthieu millert

Update usb userland stuff to reflect hid changes in the kernel.
This adds the new program usbhidaction which can be used to assign actions
to events that occur on a uhid device. For example, you can now make the
volume buttons on some newer keyboards actually do something.

userland portion of prefixing usb structure members to avoid name clashes.
From NetBSD

Rename libusb to libusbhid, a better name, per NetBSD

When system calls indicate an error they return -1, not some arbitrary
value < 0. errno is only updated in this case. Change all (most?)
callers of syscalls to follow this better, and let's see if this strictness
helps us in the future.

revert previous, it was hardly tested and is causing too many issues too close to release.

as discussed with and ok mpi@ deraadt@

- port multiple report ID support for HID parser from FreeBSD code
(rev. 205728, 224511 and 225839)

- add hid_get_report_id(3) to get id of a descriptor.

- crank the major in shlib_version 3.0 -> 4.0

ok deraadt@, mpi@

knf + new interface: hid_start() is non-exit non-stderr spewing version of hid_init(); ok matthieu millert

Update usb userland stuff to reflect hid changes in the kernel.
This adds the new program usbhidaction which can be used to assign actions
to events that occur on a uhid device. For example, you can now make the
volume buttons on some newer keyboards actually do something.

userland portion of prefixing usb structure members to avoid name clashes.
From NetBSD

Rename libusb to libusbhid, a better name, per NetBSD

revert previous, it was hardly tested and is causing too many issues too close to release.

as discussed with and ok mpi@ deraadt@

- port multiple report ID support for HID parser from FreeBSD code
(rev. 205728, 224511 and 225839)

- add hid_get_report_id(3) to get id of a descriptor.

- crank the major in shlib_version 3.0 -> 4.0

ok deraadt@, mpi@

knf + new interface: hid_start() is non-exit non-stderr spewing version of hid_init(); ok matthieu millert

Update usb userland stuff to reflect hid changes in the kernel.
This adds the new program usbhidaction which can be used to assign actions
to events that occur on a uhid device. For example, you can now make the
volume buttons on some newer keyboards actually do something.

userland portion of prefixing usb structure members to avoid name clashes.
From NetBSD

Rename libusb to libusbhid, a better name, per NetBSD