mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Michael Pratt
4d52a55201
Based on the guidelines at https://opensource.google.com/docs/releasing/authors/. 1. $ rg -l "Google LLC" | xargs sed -i 's/Google LLC.*/The gVisor Authors./' 2. Manual fixup of "Google Inc" references. 3. Add AUTHORS file. Authors may request to be added to this file. 4. Point netstack AUTHORS to gVisor AUTHORS. Drop CONTRIBUTORS. Fixes #209 PiperOrigin-RevId: 245823212 Change-Id: I64530b24ad021a7d683137459cafc510f5ee1de9
46 lines
1.5 KiB
Go
46 lines
1.5 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 auth
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// idMapFunctions "implements" generic interface segment.Functions for
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// idMapSet. An idMapSet maps non-overlapping ranges of contiguous IDs in one
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// user namespace to non-overlapping ranges of contiguous IDs in another user
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// namespace. Each such ID mapping is implemented as a range-to-value mapping
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// in the set such that [range.Start(), range.End()) => [value, value +
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// range.Length()).
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type idMapFunctions struct{}
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func (idMapFunctions) MinKey() uint32 {
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return 0
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}
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func (idMapFunctions) MaxKey() uint32 {
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return NoID
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}
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func (idMapFunctions) ClearValue(*uint32) {}
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func (idMapFunctions) Merge(r1 idMapRange, val1 uint32, r2 idMapRange, val2 uint32) (uint32, bool) {
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// Mapped ranges have to be contiguous.
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if val1+r1.Length() != val2 {
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return 0, false
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}
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return val1, true
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}
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func (idMapFunctions) Split(r idMapRange, val uint32, split uint32) (uint32, uint32) {
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return val, val + (split - r.Start)
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}
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