docs/fuchsia: update fx set & paths in docs

This commit updates the documentation for fuchsia, updating both the fx
set commands as well as the syz-manager config example.

The invocation for the fx set command changed recently. The new command
requires the user to specify both the product and board (core.x64 and
core.arm64), as well as the build directory (otherwise everything gets
built into `out/default`).

The changes in the syz-manager config are for it to point to the right
files required to run a fuchsia vm.

1 files changed, 27 insertions, 26 deletions

diff --git a/docs/fuchsia/README.md b/docs/fuchsia/README.md
index d3e75b1ce..bf2f7bb91 100644
--- a/docs/fuchsia/README.md
+++ b/docs/fuchsia/README.md
@@ -3,17 +3,18 @@
 For information about checking out and building Fuchsia see
 [Getting Started](https://fuchsia.googlesource.com/fuchsia/+/master/docs/getting_started.md)
 and [Soure Code](https://fuchsia.googlesource.com/fuchsia/+/master/docs/development/source_code/README.md).
-Image needs to be configured with sshd support:
-```
-fx set x64 --packages garnet/packages/products/sshd
-fx full-build
+```shell
+$ fx set core.x64 --build-dir "out/x64" \
+  --args extra_authorized_keys_file=\"//.ssh/authorized_keys\"
+$ fx full-build
 ```
 
 You need to build fuchsia for both arm64 and amd64:
 
-```
-fx set arm64 --packages garnet/packages/products/sshd
-fx full-build
+```shell
+$ fx set core.arm64 --build-dir "out/arm64" \
+  --args extra_authorized_keys_file=\"//.ssh/authorized_keys\"
+$ fx full-build
 ```
 
 Syscall descriptions live in the `sys/fuchsia` folder. To update a syscall, you need to modify the `.txt` file that contains it, make sure your new definition matches the one in zircon's [syscalls.abigen](https://fuchsia.googlesource.com/fuchsia/+/master/zircon/system/public/zircon/syscalls.abigen) file. **If the syscall was used in `executor/common_fuchsia.h`, you need to update the usages there as well**. FIDL definitions do not need manual updating because they are extracted automatically with the commands below.
@@ -33,25 +34,25 @@ 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/out/build/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"
-	}
+        "name": "fuchsia",
+        "target": "fuchsia/amd64",
+        "http": ":12345",
+        "workdir": "/workdir.fuchsia",
+        "kernel_obj": "/fuchsia/out/build-zircon/build-x64",
+        "syzkaller": "/syzkaller",
+        "image": "/fuchsia/out/x64/obj/build/images/fvm.blk",
+        "sshkey": "/fuchsia/.ssh/pkey",
+        "reproduce": false,
+        "cover": false,
+        "procs": 8,
+        "type": "qemu",
+        "vm": {
+                "count": 10,
+                "cpu": 4,
+                "mem": 2048,
+                "kernel": "/fuchsia/out/build-zircon/multiboot.bin",
+                "initrd": "/fuchsia/out/x64/fuchsia.zbi"
+        }
 }
 ```