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-rw-r--r--runsc/cgroup/cgroup.go42
-rw-r--r--runsc/container/container.go2
-rw-r--r--runsc/container/container_test.go6
3 files changed, 26 insertions, 24 deletions
diff --git a/runsc/cgroup/cgroup.go b/runsc/cgroup/cgroup.go
index 8fbc3887a..56da21584 100644
--- a/runsc/cgroup/cgroup.go
+++ b/runsc/cgroup/cgroup.go
@@ -201,13 +201,15 @@ func LoadPaths(pid string) (map[string]string, error) {
paths := make(map[string]string)
scanner := bufio.NewScanner(f)
for scanner.Scan() {
- // Format: ID:controller1,controller2:path
+ // Format: ID:[name=]controller1,controller2:path
// Example: 2:cpu,cpuacct:/user.slice
tokens := strings.Split(scanner.Text(), ":")
if len(tokens) != 3 {
return nil, fmt.Errorf("invalid cgroups file, line: %q", scanner.Text())
}
for _, ctrlr := range strings.Split(tokens[1], ",") {
+ // Remove prefix for cgroups with no controller, eg. systemd.
+ ctrlr = strings.TrimPrefix(ctrlr, "name=")
paths[ctrlr] = tokens[2]
}
}
@@ -237,7 +239,7 @@ func New(spec *specs.Spec) (*Cgroup, error) {
var err error
parents, err = LoadPaths("self")
if err != nil {
- return nil, fmt.Errorf("finding current cgroups: %v", err)
+ return nil, fmt.Errorf("finding current cgroups: %w", err)
}
}
return &Cgroup{
@@ -276,10 +278,8 @@ func (c *Cgroup) Install(res *specs.LinuxResources) error {
}
return err
}
- if res != nil {
- if err := cfg.ctrlr.set(res, path); err != nil {
- return err
- }
+ if err := cfg.ctrlr.set(res, path); err != nil {
+ return err
}
}
clean.Release()
@@ -304,14 +304,15 @@ func (c *Cgroup) Uninstall() error {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
b := backoff.WithContext(backoff.NewConstantBackOff(100*time.Millisecond), ctx)
- if err := backoff.Retry(func() error {
+ fn := func() error {
err := syscall.Rmdir(path)
if os.IsNotExist(err) {
return nil
}
return err
- }, b); err != nil {
- return fmt.Errorf("removing cgroup path %q: %v", path, err)
+ }
+ if err := backoff.Retry(fn, b); err != nil {
+ return fmt.Errorf("removing cgroup path %q: %w", path, err)
}
}
return nil
@@ -332,7 +333,6 @@ func (c *Cgroup) Join() (func(), error) {
if _, ok := controllers[ctrlr]; ok {
fullPath := filepath.Join(cgroupRoot, ctrlr, path)
undoPaths = append(undoPaths, fullPath)
- break
}
}
@@ -422,7 +422,7 @@ func (*noop) set(*specs.LinuxResources, string) error {
type memory struct{}
func (*memory) set(spec *specs.LinuxResources, path string) error {
- if spec.Memory == nil {
+ if spec == nil || spec.Memory == nil {
return nil
}
if err := setOptionalValueInt(path, "memory.limit_in_bytes", spec.Memory.Limit); err != nil {
@@ -455,7 +455,7 @@ func (*memory) set(spec *specs.LinuxResources, path string) error {
type cpu struct{}
func (*cpu) set(spec *specs.LinuxResources, path string) error {
- if spec.CPU == nil {
+ if spec == nil || spec.CPU == nil {
return nil
}
if err := setOptionalValueUint(path, "cpu.shares", spec.CPU.Shares); err != nil {
@@ -478,7 +478,7 @@ type cpuSet struct{}
func (*cpuSet) set(spec *specs.LinuxResources, path string) error {
// cpuset.cpus and mems are required fields, but are not set on a new cgroup.
// If not set in the spec, get it from one of the ancestors cgroup.
- if spec.CPU == nil || spec.CPU.Cpus == "" {
+ if spec == nil || spec.CPU == nil || spec.CPU.Cpus == "" {
if _, err := fillFromAncestor(filepath.Join(path, "cpuset.cpus")); err != nil {
return err
}
@@ -488,18 +488,17 @@ func (*cpuSet) set(spec *specs.LinuxResources, path string) error {
}
}
- if spec.CPU == nil || spec.CPU.Mems == "" {
+ if spec == nil || spec.CPU == nil || spec.CPU.Mems == "" {
_, err := fillFromAncestor(filepath.Join(path, "cpuset.mems"))
return err
}
- mems := spec.CPU.Mems
- return setValue(path, "cpuset.mems", mems)
+ return setValue(path, "cpuset.mems", spec.CPU.Mems)
}
type blockIO struct{}
func (*blockIO) set(spec *specs.LinuxResources, path string) error {
- if spec.BlockIO == nil {
+ if spec == nil || spec.BlockIO == nil {
return nil
}
@@ -549,7 +548,7 @@ func setThrottle(path, name string, devs []specs.LinuxThrottleDevice) error {
type networkClass struct{}
func (*networkClass) set(spec *specs.LinuxResources, path string) error {
- if spec.Network == nil {
+ if spec == nil || spec.Network == nil {
return nil
}
return setOptionalValueUint32(path, "net_cls.classid", spec.Network.ClassID)
@@ -558,7 +557,7 @@ func (*networkClass) set(spec *specs.LinuxResources, path string) error {
type networkPrio struct{}
func (*networkPrio) set(spec *specs.LinuxResources, path string) error {
- if spec.Network == nil {
+ if spec == nil || spec.Network == nil {
return nil
}
for _, prio := range spec.Network.Priorities {
@@ -573,7 +572,7 @@ func (*networkPrio) set(spec *specs.LinuxResources, path string) error {
type pids struct{}
func (*pids) set(spec *specs.LinuxResources, path string) error {
- if spec.Pids == nil || spec.Pids.Limit <= 0 {
+ if spec == nil || spec.Pids == nil || spec.Pids.Limit <= 0 {
return nil
}
val := strconv.FormatInt(spec.Pids.Limit, 10)
@@ -583,6 +582,9 @@ func (*pids) set(spec *specs.LinuxResources, path string) error {
type hugeTLB struct{}
func (*hugeTLB) set(spec *specs.LinuxResources, path string) error {
+ if spec == nil {
+ return nil
+ }
for _, limit := range spec.HugepageLimits {
name := fmt.Sprintf("hugetlb.%s.limit_in_bytes", limit.Pagesize)
val := strconv.FormatUint(limit.Limit, 10)
diff --git a/runsc/container/container.go b/runsc/container/container.go
index 63478ba8c..63f64ce6e 100644
--- a/runsc/container/container.go
+++ b/runsc/container/container.go
@@ -985,7 +985,7 @@ func (c *Container) createGoferProcess(spec *specs.Spec, conf *config.Config, bu
// Start the gofer in the given namespace.
log.Debugf("Starting gofer: %s %v", binPath, args)
if err := specutils.StartInNS(cmd, nss); err != nil {
- return nil, nil, fmt.Errorf("Gofer: %v", err)
+ return nil, nil, fmt.Errorf("gofer: %v", err)
}
log.Infof("Gofer started, PID: %d", cmd.Process.Pid)
c.GoferPid = cmd.Process.Pid
diff --git a/runsc/container/container_test.go b/runsc/container/container_test.go
index 1f8e277cc..cc188f45b 100644
--- a/runsc/container/container_test.go
+++ b/runsc/container/container_test.go
@@ -2362,12 +2362,12 @@ func executeCombinedOutput(cont *Container, name string, arg ...string) ([]byte,
}
// executeSync synchronously executes a new process.
-func (cont *Container) executeSync(args *control.ExecArgs) (syscall.WaitStatus, error) {
- pid, err := cont.Execute(args)
+func (c *Container) executeSync(args *control.ExecArgs) (syscall.WaitStatus, error) {
+ pid, err := c.Execute(args)
if err != nil {
return 0, fmt.Errorf("error executing: %v", err)
}
- ws, err := cont.WaitPID(pid)
+ ws, err := c.WaitPID(pid)
if err != nil {
return 0, fmt.Errorf("error waiting: %v", err)
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 18:21:36 +0000