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9ed45f7090
Actual API is implemented in the `init`, as it has access to root filesystem. `osd` proxies API back to `init` with some tricks to support grpc streaming. Given some absolute path, `init` produces and streams back .tar.gz archive with filesystem contents. `osctl cp` works in two modes. First mode streams data to stdout, so that we can do e.g.: `osctl cp /etc - | tar tz`. Second mode extracts archive to specified location, dropping ownership info and adjusting permissions a bit. Timestamps are not preserved. If full dump with owner/permisisons is required, it's better to stream data to `tar xz`, for quick and dirty look into filesystem contents under unprivileged user it's easier to use in-place extraction. Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
97 lines
2.1 KiB
Go
97 lines
2.1 KiB
Go
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// Package archiver provides a service to archive part of the filesystem into tar archive
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package archiver_test
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import (
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"bytes"
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"io/ioutil"
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"os"
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"path/filepath"
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"github.com/stretchr/testify/suite"
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)
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type CommonSuite struct {
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suite.Suite
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tmpDir string
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}
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var filesFixture = []struct {
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Path string
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Mode os.FileMode
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Contents []byte
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Size int
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}{
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{
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Path: "/etc/hostname",
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Mode: 0644,
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Contents: []byte("localhost"),
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},
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{
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Path: "/etc/certs/ca.crt",
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Mode: 0600,
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Contents: []byte("-- CA PEM CERT -- VERY SECRET"),
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},
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{
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Path: "/dev/random",
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Mode: 0600 | os.ModeCharDevice,
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},
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{
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Path: "/usr/bin/cp",
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Mode: 0755,
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Contents: []byte("ELF EXECUTABLE IIRC"),
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},
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{
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Path: "/usr/bin/mv",
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Mode: 0644 | os.ModeSymlink,
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Contents: []byte("/usr/bin/cp"),
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},
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{
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Path: "/lib/dynalib.so",
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Mode: 0644,
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Contents: []byte("SOME LIBRARY OUT THERE"),
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Size: 20 * 1024,
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},
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}
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func (suite *CommonSuite) SetupSuite() {
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var err error
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suite.tmpDir, err = ioutil.TempDir("", "archiver")
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suite.Require().NoError(err)
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for _, file := range filesFixture {
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suite.Require().NoError(os.MkdirAll(filepath.Join(suite.tmpDir, filepath.Dir(file.Path)), 0777))
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if file.Mode&os.ModeSymlink != 0 {
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suite.Require().NoError(os.Symlink(string(file.Contents), filepath.Join(suite.tmpDir, file.Path)))
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continue
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}
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f, err := os.OpenFile(filepath.Join(suite.tmpDir, file.Path), os.O_CREATE|os.O_WRONLY, file.Mode)
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suite.Require().NoError(err)
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var contents []byte
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if file.Size > 0 {
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contents = bytes.Repeat(file.Contents, file.Size/len(file.Contents))
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contents = append(contents, file.Contents[:file.Size-file.Size/len(file.Contents)*len(file.Contents)]...)
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} else {
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contents = file.Contents
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}
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_, err = f.Write(contents)
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suite.Require().NoError(err)
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suite.Require().NoError(f.Close())
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}
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}
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func (suite *CommonSuite) TearDownSuite() {
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suite.Require().NoError(os.RemoveAll(suite.tmpDir))
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}
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