mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Adin Scannell
0e2f1b7abd
Because the abi will depend on the core types for marshalling (usermem, context, safemem, safecopy), these need to be flattened from the sentry directory. These packages contain no sentry-specific details. PiperOrigin-RevId: 291811289
49 lines
1.5 KiB
Go
49 lines
1.5 KiB
Go
// Copyright 2019 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 pgalloc
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import (
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"gvisor.dev/gvisor/pkg/context"
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)
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// contextID is this package's type for context.Context.Value keys.
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type contextID int
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const (
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// CtxMemoryFile is a Context.Value key for a MemoryFile.
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CtxMemoryFile contextID = iota
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// CtxMemoryFileProvider is a Context.Value key for a MemoryFileProvider.
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CtxMemoryFileProvider
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)
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// MemoryFileFromContext returns the MemoryFile used by ctx, or nil if no such
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// MemoryFile exists.
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func MemoryFileFromContext(ctx context.Context) *MemoryFile {
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if v := ctx.Value(CtxMemoryFile); v != nil {
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return v.(*MemoryFile)
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}
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return nil
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}
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// MemoryFileProviderFromContext returns the MemoryFileProvider used by ctx, or nil if no such
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// MemoryFileProvider exists.
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func MemoryFileProviderFromContext(ctx context.Context) MemoryFileProvider {
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if v := ctx.Value(CtxMemoryFileProvider); v != nil {
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return v.(MemoryFileProvider)
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}
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return nil
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}
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