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add tools package to reference gomobile
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| // Copyright 2023 The Outline 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. | ||
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| //go:build tools | ||
| // +build tools | ||
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| // See https://github.com/golang/go/wiki/Modules#how-can-i-track-tool-dependencies-for-a-module | ||
| // and https://github.com/go-modules-by-example/index/blob/master/010_tools/README.md | ||
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| package tools | ||
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| import ( | ||
| _ "golang.org/x/mobile/cmd/gomobile" | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| // Copyright 2023 The Outline 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. | ||
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| package backend | ||
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| import ( | ||
| "errors" | ||
| "fmt" | ||
| "os" | ||
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| "golang.org/x/sys/unix" | ||
| ) | ||
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| func NewTunDeviceFromFD(fd int) (ReadWriter, error) { | ||
| if fd < 0 { | ||
| return nil, errors.New("fd is invalid") | ||
| } | ||
| dupFd, err := unix.Dup(fd) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to dup fd: %v", err) | ||
| } | ||
| f := os.NewFile(uintptr(dupFd), "") | ||
| if f == nil { | ||
| return nil, errors.New("failed to open file from fd") | ||
| } | ||
| return f, nil | ||
| } |