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# Fuchsia support
For information about checking out and building Fuchsia see
[Getting Started](https://fuchsia.googlesource.com/docs/+/master/getting_started.md)
and [Soure Code](https://fuchsia.googlesource.com/docs/+/master/development/source_code/README.md).
Image needs to be configured with sshd support:
```
fx set x64 --packages garnet/packages/products/sshd
fx full-build
```
To update descriptions run:
```
make extract TARGETOS=fuchsia SOURCEDIR=/path/to/fuchsia/checkout
make generate
```
To build binaries:
```
make TARGETOS=fuchsia TARGETARCH=amd64 SOURCEDIR=/path/to/fuchsia/checkout
```
Run `syz-manager` with a config along the lines of:
```
{
"name": "fuchsia",
"target": "fuchsia/amd64",
"http": ":12345",
"workdir": "/workdir.fuchsia",
"kernel_obj": "/fuchsia/out/build-zircon/build-x64",
"syzkaller": "/syzkaller",
"image": "/fuchsia/out/x64/images/fvm.blk",
"sshkey": "/fuchsia/out/x64/ssh-keys/id_ed25519",
"reproduce": false,
"cover": false,
"procs": 8,
"type": "qemu",
"vm": {
"count": 10,
"cpu": 4,
"mem": 2048,
"kernel": "/fuchsia/out/build-zircon/build-x64/zircon.bin",
"initrd": "/fuchsia/out/x64/bootdata-blob.bin"
}
}
```
## How to generate syscall description for FIDL
Use `generate_fidl` target to automatically generate syscall descriptions for all the supported FIDL files.
```bash
make generate_fidl TARGETARCH=amd64 SOURCEDIR=/path/to/fuchsia/checkout
```
To manually generate syscall description for a given `.fidl` file, use the following instruction.
FIDL files should first be compiled into FIDL intermediate representation (JSON) files using `fidlc`:
```bash
/fuchsia/out/x64/host_x64/fidlc --json /tmp/io.json --files /fuchsia/zircon/system/fidl/fuchsia-io/io.fidl
```
Then run FIDL compiler backend `fidlgen` with syzkaller generator, which compiles a FIDL IR file into a syscall description file:
```bash
/fuchsia/out/x64/host_x64/fidlgen -generators syzkaller -json /tmp/io.json -output-base fidl_io -include-base fidl_io
```
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