28 lines
969 B
Go
28 lines
969 B
Go
// Copyright 2018 Google Inc.
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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 fsutil
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import (
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"unsafe"
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"gvisor.googlesource.com/gvisor/pkg/sentry/safemem"
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)
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func (*HostFileMapper) unsafeBlockFromChunkMapping(addr uintptr) safemem.Block {
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// We don't control the host file's length, so touching its mappings may
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// raise SIGBUS. Thus accesses to it must use safecopy.
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return safemem.BlockFromUnsafePointer((unsafe.Pointer)(addr), chunkSize)
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}
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