add memory cgroup controller

.github/workflows/main.yml

@@ -45,7 +45,7 @@ jobs:
           expect_err_num=8
           act_err_num=0
           cd $(go env GOPATH)/src/github.com/opencontainers/runtime-tools
-          test_cases=("default/default.t" "linux_cgroups_devices/linux_cgroups_devices.t" "linux_cgroups_hugetlb/linux_cgroups_hugetlb.t" "linux_cgroups_pids/linux_cgroups_pids.t")
+          test_cases=("default/default.t" "linux_cgroups_devices/linux_cgroups_devices.t" "linux_cgroups_hugetlb/linux_cgroups_hugetlb.t" "linux_cgroups_pids/linux_cgroups_pids.t", "linux_cgroups_memory/linux_cgroups_memory.t")
           for case in "${test_cases[@]}"; do
             title="Running $case"
             if [ 0 -ne $(sudo RUNTIME=$GITHUB_WORKSPACE/target/x86_64-unknown-linux-gnu/debug/youki ./validation/$case | grep "not ok" | wc -l) ]; then

.gitignore

@@ -1,2 +1,6 @@
 /target
 .vagrant/
+
+tags
+tags.lock
+tags.temp

Cargo.toml

@@ -19,4 +19,4 @@ mio = { version = "0.7", features = ["os-ext", "os-poll"] }
 chrono = "0.4"
 once_cell = "1.6.0"
 futures = { version = "0.3", features = ["thread-pool"] }
-regex = "1.5"
+regex = "1.5"

src/cgroups/controller_type.rs

@@ -4,6 +4,7 @@ pub enum ControllerType {
     Devices,
     HugeTlb,
     Pids,
+    Memory,
 }
 
 impl ToString for ControllerType {
@@ -12,6 +13,7 @@ impl ToString for ControllerType {
             Self::Devices => "devices".into(),
             Self::HugeTlb => "hugetlb".into(),
             Self::Pids => "pids".into(),
+            Self::Memory => "memory".into(),
         }
     }
 }

src/cgroups/manager.rs

@@ -7,13 +7,15 @@ use procfs::process::Process;
 
 use crate::{cgroups::ControllerType, spec::LinuxResources, utils::PathBufExt};
 
-use super::{devices::Devices, hugetlb::Hugetlb, pids::Pids, Controller};
+use super::{devices::Devices, hugetlb::Hugetlb, memory::Memory, pids::Pids, Controller};
 
 const CONTROLLERS: &[ControllerType] = &[
     ControllerType::Devices,
     ControllerType::HugeTlb,
+    ControllerType::Memory,
     ControllerType::Pids,
 ];
+
 pub struct Manager {
     subsystems: HashMap<String, PathBuf>,
 }
@@ -36,6 +38,7 @@ impl Manager {
             match subsys.0.as_str() {
                 "devices" => Devices::apply(linux_resources, &subsys.1, pid)?,
                 "hugetlb" => Hugetlb::apply(linux_resources, &subsys.1, pid)?,
+                "memory" => Memory::apply(linux_resources, &subsys.1, pid)?,
                 "pids" => Pids::apply(linux_resources, &subsys.1, pid)?,
                 _ => continue,
             }
@@ -59,17 +62,13 @@ impl Manager {
         let mount = Process::myself()?
             .mountinfo()?
             .into_iter()
-            .filter(|m| m.fs_type == "cgroup" && m.mount_point.ends_with(subsystem))
-            .collect::<Vec<_>>()
-            .pop()
+            .find(|m| m.fs_type == "cgroup" && m.mount_point.ends_with(subsystem))
             .unwrap();
 
         let cgroup = Process::myself()?
             .cgroups()?
             .into_iter()
-            .filter(|c| c.controllers.contains(&subsystem.to_owned()))
-            .collect::<Vec<_>>()
-            .pop()
+            .find(|c| c.controllers.contains(&subsystem.to_owned()))
             .unwrap();
 
         let p = if cgroup_path.to_string_lossy().into_owned().is_empty() {