syncable_cli/analyzer/kubelint/templates/
readonlyrootfs.rs

1//! Read-only root filesystem detection template.
2
3use crate::analyzer::kubelint::context::Object;
4use crate::analyzer::kubelint::extract;
5use crate::analyzer::kubelint::templates::{CheckFunc, ParameterDesc, Template, TemplateError};
6use crate::analyzer::kubelint::types::{Diagnostic, ObjectKindsDesc};
7
8/// Template for detecting containers without read-only root filesystem.
9pub struct ReadOnlyRootFsTemplate;
10
11impl Template for ReadOnlyRootFsTemplate {
12    fn key(&self) -> &str {
13        "read-only-root-fs"
14    }
15
16    fn human_name(&self) -> &str {
17        "Read-Only Root Filesystem"
18    }
19
20    fn description(&self) -> &str {
21        "Detects containers without a read-only root filesystem"
22    }
23
24    fn supported_object_kinds(&self) -> ObjectKindsDesc {
25        ObjectKindsDesc::default()
26    }
27
28    fn parameters(&self) -> Vec<ParameterDesc> {
29        Vec::new()
30    }
31
32    fn instantiate(
33        &self,
34        _params: &serde_yaml::Value,
35    ) -> Result<Box<dyn CheckFunc>, TemplateError> {
36        Ok(Box::new(ReadOnlyRootFsCheck))
37    }
38}
39
40struct ReadOnlyRootFsCheck;
41
42impl CheckFunc for ReadOnlyRootFsCheck {
43    fn check(&self, object: &Object) -> Vec<Diagnostic> {
44        let mut diagnostics = Vec::new();
45
46        if let Some(pod_spec) = extract::pod_spec::extract_pod_spec(&object.k8s_object) {
47            for container in extract::container::all_containers(pod_spec) {
48                let read_only = container
49                    .security_context
50                    .as_ref()
51                    .and_then(|sc| sc.read_only_root_filesystem);
52
53                if read_only != Some(true) {
54                    diagnostics.push(Diagnostic {
55                        message: format!(
56                            "Container '{}' does not have a read-only root filesystem",
57                            container.name
58                        ),
59                        remediation: Some(
60                            "Set securityContext.readOnlyRootFilesystem to true.".to_string(),
61                        ),
62                    });
63                }
64            }
65        }
66
67        diagnostics
68    }
69}
syncable_cli/analyzer/kubelint/templates/readonlyrootfs.rs

syncable_cli/analyzer/kubelint/templates/
readonlyrootfs.rs
