mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-14 02:10:21 +00:00
22ff5c0911
snapClient.SnapshotV1alpha1Client and also update kube dependency Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
95 lines
3.0 KiB
Go
95 lines
3.0 KiB
Go
/*
|
|
Copyright 2014 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package capabilities
|
|
|
|
import (
|
|
"sync"
|
|
)
|
|
|
|
// Capabilities defines the set of capabilities available within the system.
|
|
// For now these are global. Eventually they may be per-user
|
|
type Capabilities struct {
|
|
AllowPrivileged bool
|
|
|
|
// Pod sources from which to allow privileged capabilities like host networking, sharing the host
|
|
// IPC namespace, and sharing the host PID namespace.
|
|
PrivilegedSources PrivilegedSources
|
|
|
|
// PerConnectionBandwidthLimitBytesPerSec limits the throughput of each connection (currently only used for proxy, exec, attach)
|
|
PerConnectionBandwidthLimitBytesPerSec int64
|
|
}
|
|
|
|
// PrivilegedSources defines the pod sources allowed to make privileged requests for certain types
|
|
// of capabilities like host networking, sharing the host IPC namespace, and sharing the host PID namespace.
|
|
type PrivilegedSources struct {
|
|
// List of pod sources for which using host network is allowed.
|
|
HostNetworkSources []string
|
|
|
|
// List of pod sources for which using host pid namespace is allowed.
|
|
HostPIDSources []string
|
|
|
|
// List of pod sources for which using host ipc is allowed.
|
|
HostIPCSources []string
|
|
}
|
|
|
|
var capInstance struct {
|
|
once sync.Once
|
|
lock sync.Mutex
|
|
capabilities *Capabilities
|
|
}
|
|
|
|
// Initialize the capability set. This can only be done once per binary, subsequent calls are ignored.
|
|
func Initialize(c Capabilities) {
|
|
// Only do this once
|
|
capInstance.once.Do(func() {
|
|
capInstance.capabilities = &c
|
|
})
|
|
}
|
|
|
|
// Setup the capability set. It wraps Initialize for improving usability.
|
|
func Setup(allowPrivileged bool, perConnectionBytesPerSec int64) {
|
|
Initialize(Capabilities{
|
|
AllowPrivileged: allowPrivileged,
|
|
PerConnectionBandwidthLimitBytesPerSec: perConnectionBytesPerSec,
|
|
})
|
|
}
|
|
|
|
// SetForTests sets capabilities for tests. Convenience method for testing. This should only be called from tests.
|
|
func SetForTests(c Capabilities) {
|
|
capInstance.lock.Lock()
|
|
defer capInstance.lock.Unlock()
|
|
capInstance.capabilities = &c
|
|
}
|
|
|
|
// Get returns a read-only copy of the system capabilities.
|
|
func Get() Capabilities {
|
|
capInstance.lock.Lock()
|
|
defer capInstance.lock.Unlock()
|
|
// This check prevents clobbering of capabilities that might've been set via SetForTests
|
|
if capInstance.capabilities == nil {
|
|
Initialize(Capabilities{
|
|
AllowPrivileged: false,
|
|
PrivilegedSources: PrivilegedSources{
|
|
HostNetworkSources: []string{},
|
|
HostPIDSources: []string{},
|
|
HostIPCSources: []string{},
|
|
},
|
|
})
|
|
}
|
|
return *capInstance.capabilities
|
|
}
|