59 lines
1.7 KiB
Go
59 lines
1.7 KiB
Go
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package kernel
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import (
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"gvisor.dev/gvisor/pkg/sentry/kernel/auth"
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"gvisor.dev/gvisor/pkg/sentry/kernel/semaphore"
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"gvisor.dev/gvisor/pkg/sentry/kernel/shm"
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)
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// IPCNamespace represents an IPC namespace.
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//
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// +stateify savable
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type IPCNamespace struct {
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// User namespace which owns this IPC namespace. Immutable.
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userNS *auth.UserNamespace
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semaphores *semaphore.Registry
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shms *shm.Registry
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}
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// NewIPCNamespace creates a new IPC namespace.
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func NewIPCNamespace(userNS *auth.UserNamespace) *IPCNamespace {
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return &IPCNamespace{
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userNS: userNS,
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semaphores: semaphore.NewRegistry(userNS),
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shms: shm.NewRegistry(userNS),
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}
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}
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// SemaphoreRegistry returns the semanphore set registry for this namespace.
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func (i *IPCNamespace) SemaphoreRegistry() *semaphore.Registry {
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return i.semaphores
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}
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// ShmRegistry returns the shm segment registry for this namespace.
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func (i *IPCNamespace) ShmRegistry() *shm.Registry {
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return i.shms
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}
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// IPCNamespace returns the task's IPC namespace.
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func (t *Task) IPCNamespace() *IPCNamespace {
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t.mu.Lock()
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defer t.mu.Unlock()
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return t.ipcns
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}
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