sys/linux/uhid.txt

# Copyright 2018 syzkaller project authors. All rights reserved.
# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.

include <uapi/linux/fcntl.h>
include <uapi/linux/uhid.h>

resource fd_uhid[fd]

openat$uhid(fd const[AT_FDCWD], file ptr[in, string["/dev/uhid"]], flags flags[uhid_open_flags], mode const[0]) fd_uhid
write$UHID_CREATE(fd fd_uhid, data ptr[in, uhid_create_req], len len[data])
write$UHID_CREATE2(fd fd_uhid, data ptr[in, uhid_create2_req], len len[data])
write$UHID_DESTROY(fd fd_uhid, data ptr[in, uhid_destroy_req], len len[data])
write$UHID_INPUT(fd fd_uhid, data ptr[in, uhid_input_req], len len[data])
write$UHID_INPUT2(fd fd_uhid, data ptr[in, uhid_input2_req], len len[data])
write$UHID_GET_REPORT_REPLY(fd fd_uhid, data ptr[in, uhid_get_report_req], len len[data])
write$UHID_SET_REPORT_REPLY(fd fd_uhid, data ptr[in, uhid_set_report_req], len len[data])

uhid_create_req {
	type	const[UHID_CREATE, int32]
	name	string[uhid_names, 128]
	phys	string[uhid_names, 64]
	uniq	string[uhid_names, 64]
	rd_data	ptr[out, array[int8]]
	rd_size	len[rd_data, int16]
	bus	int16
	vendor	int32
	product	int32
	version	int32
	country	int32
} [packed]

uhid_create2_req {
	type	const[UHID_CREATE2, int32]
	name	string[uhid_names, 128]
	phys	string[uhid_names, 64]
	uniq	string[uhid_names, 64]
	rd_size	len[rd_data, int16]
	bus	int16
	vendor	int32
	product	int32
	version	int32
	country	int32
	rd_data	array[int8]
} [packed]

uhid_destroy_req {
	type	const[UHID_DESTROY, int32]
} [packed]

uhid_input_req {
	type	const[UHID_INPUT, int32]
	data	array[int8, UHID_DATA_MAX]
	size	len[data, int16]
} [packed]

uhid_input2_req {
	type	const[UHID_INPUT2, int32]
	size	len[data, int16]
	data	array[int8]
} [packed]

uhid_get_report_req {
	type	const[UHID_GET_REPORT_REPLY, int32]
	id	int32[0:10]
	rnum	int8
	rtype	int8
} [packed]

uhid_set_report_req {
	type	const[UHID_SET_REPORT_REPLY, int32]
	id	int32[0:10]
	rnum	int8
	rtype	int8
	size	len[data, int16]
	data	array[int8]
} [packed]

uhid_names = "syz0", "syz1"
uhid_open_flags = O_RDWR, O_RDWR_NONBLOCK

define O_RDWR_NONBLOCK	O_RDWR | O_NONBLOCK