# Copyright 2017 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.

# See https://cs.opensource.google/fuchsia/fuchsia/+/main:zircon/vdso/channel.fidl

include <zircon/syscalls.h>

resource zx_chan[zx_handle]

zx_channel_call(handle zx_chan, options const[0], deadline zx_time, args ptr[in, zx_channel_call_args], actual_bytes ptr[out, int32], actual_handles ptr[out, int32])
zx_channel_create(options const[0], out0 ptr[out, zx_chan], out1 ptr[out, zx_chan])
zx_channel_read(handle zx_chan, options flags[chan_read_options], bytes ptr[out, array[int8]], handles ptr[out, zx_handle], num_bytes len[bytes], num_handles len[handles], actual_bytes ptr[out, int32], actual_handles ptr[out, int32])
zx_channel_write(handle zx_chan, options flags[chan_write_options], bytes ptr[in, array[int8]], num_bytes len[bytes], handles ptr[in, array[zx_handle]], num_handles len[handles])
zx_channel_write$ZX_CHANNEL_IOVEC(handle zx_chan, options const[ZX_CHANNEL_WRITE_USE_IOVEC], bytes ptr[in, zx_channel_iovec], num_bytes len[bytes], handles ptr[in, array[zx_handle]], num_handles len[handles])

zx_channel_read_etc(handle zx_chan, options int32, bytes ptr[out, array[int8]], handles ptr[out, array[zx_handle_info]], num_bytes len[bytes], num_handles len[handles], actual_bytes ptr[out, int32], actual_handles ptr[out, int32])
zx_channel_call_etc(handle zx_chan, options int32, deadline zx_time, args ptr[in, zx_channel_call_args], actual_bytes ptr[out, int32], actual_handles ptr[out, int32])
zx_channel_write_etc(handle zx_chan, options int32, bytes ptr[in, array[int8]], num_bytes len[bytes], handles ptr[in, array[zx_handle_disposition]], num_handles len[handles])
zx_channel_write_etc$ZX_CHANNEL_IOVEC(handle zx_chan, options const[ZX_CHANNEL_WRITE_USE_IOVEC], bytes ptr[in, array[int8]], num_bytes len[bytes], handles ptr[in, array[zx_handle_disposition]], num_handles len[handles])

zx_channel_call_args {
	wr_bytes	ptr[in, array[int8]]
	wr_handles	ptr[in, array[zx_handle]]
	rd_bytes	ptr[out, array[int8]]
	rd_handles	ptr[out, array[zx_handle]]
	wr_num_bytes	len[wr_bytes, int32]
	wr_num_handles	len[wr_handles, int32]
	rd_num_bytes	len[rd_bytes, int32]
	rd_num_handles	len[rd_handles, int32]
}

zx_handle_info {
	handle	zx_handle
	type	int32
	rights	int32
	unused	int32
}

zx_channel_iovec {
	buffer		ptr[in, array[int8]]
	capacity	int32
	reserved	int32
}

zx_handle_disposition {
	operation	int32
	handle		zx_handle
	type		int32
	rights		int32
	result		int32
}

chan_read_options = ZX_CHANNEL_READ_MAY_DISCARD
chan_write_options = ZX_CHANNEL_WRITE_USE_IOVEC