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agent: add ocicrypt config

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ocicrypt config is for kata-agent to connect to CDH to request for image
decryption key. This value is specified by an env. We use this
workaround the same as CCv0 branch.

In future, we will consider better ways instead of writting files and
setting envs inside inner logic of kata-agent.

Signed-off-by: Xynnn007 <xynnn@linux.alibaba.com>
This commit is contained in:
Xynnn007 2024-07-10 17:09:40 +08:00 committed by stevenhorsman
parent 1072658219
commit a56b15112a
1 changed files with 15 additions and 0 deletions
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15
src/agent/src/main.rs
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@ -110,6 +110,9 @@ const CDH_SOCKET_URI: &str = concatcp!(UNIX_SOCKET_PREFIX, CDH_SOCKET);
const API_SERVER_PATH: &str = "/usr/local/bin/api-server-rest";
/// Path of ocicrypt config file. This is used by image-rs when decrypting image.
const OCICRYPT_CONFIG_PATH: &str = "/tmp/ocicrypt_config.json";
const DEFAULT_LAUNCH_PROCESS_TIMEOUT: i32 = 6;
lazy_static! {
@ -478,10 +481,22 @@ fn init_attestation_components(logger: &Logger, config: &AgentConfig) -> Result<
return Ok(None);
}
let ocicrypt_config = serde_json::json!({
"key-providers": {
"attestation-agent":{
"ttrpc":CDH_SOCKET_URI
}
}
});
fs::write(OCICRYPT_CONFIG_PATH, ocicrypt_config.to_string().as_bytes())?;
env::set_var("OCICRYPT_KEYPROVIDER_CONFIG", OCICRYPT_CONFIG_PATH);
debug!(
logger,
"spawning confidential-data-hub process {}", CDH_PATH
);
launch_process(
logger,
CDH_PATH,