carlos / platform Public

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1	//go:build linux
2
3	package assetcache
4
5	import "golang.org/x/sys/unix"
6
7	type statfsFS struct{}
8
9	// Statfs is the real FS: the kernel's answer for the filesystem holding dir.
10	// free counts the blocks an unprivileged writer may use (Bavail).
11	var Statfs FS = statfsFS{}
12
13	func (statfsFS) Space(dir string) (total, free uint64, err error) {
14	var st unix.Statfs_t
15	if err := unix.Statfs(dir, &st); err != nil {
16	return 0, 0, err
17	}
18	bsize := uint64(st.Bsize)
19	return st.Blocks * bsize, st.Bavail * bsize, nil
20	}
21