mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Etienne Perot
9ca09375e4
This creates a `go_template` that can generate a `go_library` rule which extracts a compressed binary to a temporary location, then executes it. This is useful to implement `runsc` subcommands without requiring that these subcommands' dependencies are linked into the main `runsc` binary. PiperOrigin-RevId: 557270682
45 lines
1.3 KiB
Go
45 lines
1.3 KiB
Go
// Copyright 2023 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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// flatecompress compresses data from stdin and writes it to stdout with flate.
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package main
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import (
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"compress/flate"
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"fmt"
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"io"
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"os"
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)
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func main() {
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writer, err := flate.NewWriter(os.Stdout, flate.BestCompression)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot create flate writer: %v\n", err)
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os.Exit(1)
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}
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if _, err := io.Copy(writer, os.Stdin); err != nil {
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fmt.Fprintf(os.Stderr, "Failed to compress binary: %v\n", err)
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os.Exit(1)
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}
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if err := writer.Flush(); err != nil {
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fmt.Fprintf(os.Stderr, "Cannot flush: %v\n", err)
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os.Exit(1)
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}
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if err := writer.Close(); err != nil {
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fmt.Fprintf(os.Stderr, "Cannot close writer: %v\n", err)
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os.Exit(1)
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}
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os.Exit(0)
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}
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