jcoffey-dev
4b0bec8956
GPLv3's "How to Apply These Terms" asks for a notice in each source file; this is the modern two-line SPDX form of it rather than the full paragraph. 82 files, including tests. The blank line after the header is load-bearing. In Go a comment block immediately preceding `package X` becomes the package doc comment, so without the separator the SPDX lines would be absorbed into the doc for the eleven packages whose doc.go (or main.go) opens with one, and `go doc` would print them. Verified it doesn't.
29 lines
631 B
Go
29 lines
631 B
Go
// SPDX-FileCopyrightText: 2026 LINUXexpert-org
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// SPDX-License-Identifier: GPL-3.0-or-later
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package backup
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import (
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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"io"
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"os"
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)
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// hashFile returns a file's SHA256 and size, for recording as a
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// checkpoint.Artifact.
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func hashFile(path string) (sha256Hex string, size int64, err error) {
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f, err := os.Open(path)
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if err != nil {
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return "", 0, fmt.Errorf("backup: hash %s: %w", path, err)
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}
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defer f.Close()
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h := sha256.New()
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n, err := io.Copy(h, f)
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if err != nil {
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return "", 0, fmt.Errorf("backup: hash %s: %w", path, err)
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}
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return hex.EncodeToString(h.Sum(nil)), n, nil
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}
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