kata-containers/cgroups-rs
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cgroup: support get cgroup relative paths by process pid

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support get cgroup relative paths by process pid

Signed-off-by: Zhang Tianyang <burning9699@gmail.com>
This commit is contained in:
Zhang Tianyang
2022-02-26 17:53:02 +08:00
parent b4df6016b3
commit fa94a1174f
1 changed files with 11 additions and 2 deletions
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13
src/cgroup.rs
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@@ -359,9 +359,18 @@ fn create_v2_cgroup(root: PathBuf, path: &str) -> Result<()> {
}
pub fn get_cgroups_relative_paths() -> Result<HashMap<String, String>> {
let path = "/proc/self/cgroup".to_string();
get_cgroups_relative_paths_by_path(path)
}
pub fn get_cgroups_relative_paths_by_pid(pid: u32) -> Result<HashMap<String, String>> {
let path = format!("/proc/{}/cgroup", pid);
get_cgroups_relative_paths_by_path(path)
}
fn get_cgroups_relative_paths_by_path(path: String) -> Result<HashMap<String, String>> {
let mut m = HashMap::new();
let content =
fs::read_to_string("/proc/self/cgroup").map_err(|e| Error::with_cause(ReadFailed, e))?;
let content = fs::read_to_string(path).map_err(|e| Error::with_cause(ReadFailed, e))?;
for l in content.lines() {
let fl: Vec<&str> = l.split(':').collect();
if fl.len() != 3 {