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Code Issues Releases Activity

about: fix potential overflow of about in various backends

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Before this fix it was possible for an about call in various backends
to exceed an int64 and wrap.

This patch causes it to clip to the max int64 value instead.
This commit is contained in:
Nick Craig-Wood
2025-07-30 18:40:25 +01:00
parent dc95f36bc1
commit 743d160fdd
6 changed files with 17 additions and 17 deletions
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8
backend/smb/smb.go
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@@ -494,11 +494,11 @@ func (f *Fs) About(ctx context.Context) (_ *fs.Usage, err error) {
return nil, err
}
bs := int64(stat.BlockSize())
bs := stat.BlockSize()
usage := &fs.Usage{
Total: fs.NewUsageValue(bs * int64(stat.TotalBlockCount())),
Used: fs.NewUsageValue(bs * int64(stat.TotalBlockCount()-stat.FreeBlockCount())),
Free: fs.NewUsageValue(bs * int64(stat.AvailableBlockCount())),
Total: fs.NewUsageValue(bs * stat.TotalBlockCount()),
Used: fs.NewUsageValue(bs * (stat.TotalBlockCount() - stat.FreeBlockCount())),
Free: fs.NewUsageValue(bs * stat.AvailableBlockCount()),
}
return usage, nil
}