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fuse: fix free space reporting on Darwin #275

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Mar 19, 2019
Merged

fuse: fix free space reporting on Darwin #275

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10 changes: 10 additions & 0 deletions fuse/types_darwin.go
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Original file line number Diff line number Diff line change
Expand Up @@ -153,4 +153,14 @@ func (s *StatfsOut) FromStatfsT(statfs *syscall.Statfs_t) {
s.Ffree = statfs.Ffree
s.Bsize = uint32(statfs.Iosize) // Iosize translates to Bsize: the optimal transfer size.
s.Frsize = s.Bsize // Bsize translates to Frsize: the minimum transfer size.

// The block counts are in units of statfs.Bsize.
// If s.Bsize != statfs.Bsize, we have to recalculate the block counts
// accordingly (s.Bsize is usually 256*statfs.Bsize).
if s.Bsize > statfs.Bsize {
adj := uint64(s.Bsize / statfs.Bsize)
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s.Blocks /= adj
s.Bfree /= adj
s.Bavail /= adj
}
}