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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>
36 lines
782 B
Go
36 lines
782 B
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
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import (
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"compress/gzip"
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"context"
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"io"
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)
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// TarGz produces .tar.gz archive of filesystem starting at rootPath
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func TarGz(ctx context.Context, rootPath string, output io.Writer) error {
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paths, errCh, err := Walker(ctx, rootPath)
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if err != nil {
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return err
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}
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zw := gzip.NewWriter(output)
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//nolint: errcheck
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defer zw.Close()
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err = Tar(ctx, paths, zw)
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if err != nil {
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return err
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}
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if err = <-errCh; err != nil {
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return err
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}
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return zw.Close()
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}
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