carlos / platform Public

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1	//go:build linux
2
3	package host
4
5	import (
6	"os"
7
8	"golang.org/x/sys/unix"
9	)
10
11	// readHeadroom reads spare memory from /proc/meminfo and spare disk from
12	// the data directory's filesystem. A reading that fails is left at zero.
13	func readHeadroom(dataDir string, awake int) *edgeHeadroom {
14	h := &edgeHeadroom{Awake: awake}
15	if b, err := os.ReadFile("/proc/meminfo"); err == nil {
16	h.MemFreeMiB = parseMemAvailableMiB(string(b))
17	}
18	var st unix.Statfs_t
19	if err := unix.Statfs(dataDir, &st); err == nil {
20	h.DiskFreeMiB = int64(st.Bavail) * int64(st.Bsize) / (1 << 20)
21	}
22	return h
23	}
24