starnix_kernel_structured_config/
starnix_kernel_structured_config_rust_config_lib_source.rs

1use fidl::unpersist;
2use fidl_cf_sc_internal_starnixkernelstructuredconfig::Config as FidlConfig;
3use fuchsia_component_config::{Config as ComponentConfig, Error};
4use fuchsia_inspect::{ArrayProperty, Node};
5use std::convert::TryInto;
6const EXPECTED_CHECKSUM: &[u8] = &[
7    0xf4, 0x72, 0xd7, 0xaa, 0x71, 0x90, 0x0a, 0x9f, 0x15, 0x2f, 0xea, 0x45, 0x2a, 0xd7, 0x34, 0xcb,
8    0xaf, 0xc4, 0xcd, 0x05, 0x19, 0x69, 0x12, 0x1f, 0xe9, 0x14, 0xdc, 0x23, 0xf2, 0xe3, 0x9b, 0x6e,
9];
10#[derive(Debug)]
11pub struct Config {
12    pub extra_features: Vec<String>,
13}
14impl Config {
15    #[doc = r" Take the config startup handle and parse its contents."]
16    #[doc = r""]
17    #[doc = r" # Panics"]
18    #[doc = r""]
19    #[doc = r" If the config startup handle was already taken or if it is not valid."]
20    pub fn take_from_startup_handle() -> Self {
21        <Self as ComponentConfig>::take_from_startup_handle()
22    }
23    #[doc = r" Parse `Self` from `vmo`."]
24    pub fn from_vmo(vmo: &zx::Vmo) -> Result<Self, Error> {
25        <Self as ComponentConfig>::from_vmo(vmo)
26    }
27    #[doc = r" Parse `Self` from `bytes`."]
28    pub fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
29        <Self as ComponentConfig>::from_bytes(bytes)
30    }
31    pub fn record_inspect(&self, inspector_node: &Node) {
32        <Self as ComponentConfig>::record_inspect(self, inspector_node)
33    }
34}
35impl ComponentConfig for Config {
36    #[doc = r" Parse `Self` from `bytes`."]
37    fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
38        let (checksum_len_bytes, bytes) = bytes.split_at_checked(2).ok_or(Error::TooFewBytes)?;
39        let checksum_len_bytes: [u8; 2] =
40            checksum_len_bytes.try_into().expect("previous call guaranteed 2 element slice");
41        let checksum_length = u16::from_le_bytes(checksum_len_bytes) as usize;
42        let (observed_checksum, bytes) =
43            bytes.split_at_checked(checksum_length).ok_or(Error::TooFewBytes)?;
44        if observed_checksum != EXPECTED_CHECKSUM {
45            return Err(Error::ChecksumMismatch {
46                expected_checksum: EXPECTED_CHECKSUM.to_vec(),
47                observed_checksum: observed_checksum.to_vec(),
48            });
49        }
50        let fidl_config: FidlConfig = unpersist(bytes).map_err(Error::Unpersist)?;
51        Ok(Self { extra_features: fidl_config.extra_features })
52    }
53    fn record_inspect(&self, inspector_node: &Node) {
54        let arr = inspector_node.create_string_array("extra_features", self.extra_features.len());
55        for i in 0..self.extra_features.len() {
56            arr.set(i, &self.extra_features[i]);
57        }
58        inspector_node.record(arr);
59    }
60}
starnix_kernel_structured_config/starnix_kernel_structured_config_rust_config_lib_source.rs

starnix_kernel_structured_config/
starnix_kernel_structured_config_rust_config_lib_source.rs
