use stat.Blocks and not info.Size
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@ -3,6 +3,7 @@ package fsutil
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import (
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"os"
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"path/filepath"
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"syscall"
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"golang.org/x/xerrors"
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)
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@ -12,6 +13,7 @@ type SizeInfo struct {
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}
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// FileSize returns bytes used by a file or directory on disk
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// NOTE: We care about the allocated bytes, not file or directory size
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func FileSize(path string) (SizeInfo, error) {
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var size int64
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err := filepath.Walk(path, func(_ string, info os.FileInfo, err error) error {
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@ -19,7 +21,11 @@ func FileSize(path string) (SizeInfo, error) {
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return err
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}
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if !info.IsDir() {
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size += info.Size()
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stat := info.Sys().(*syscall.Stat_t)
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// NOTE: stat.Blocks is in 512B blocks, NOT in stat.Blksize return SizeInfo{size}, nil
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// See https://www.gnu.org/software/libc/manual/html_node/Attribute-Meanings.html
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size += int64(stat.Blocks) * 512 // nolint NOTE: int64 cast is needed on osx
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}
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return err
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})
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