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6c720b7aea
syscall.SysctlRaw is Darwin-only in Go's standard library; FreeBSD requires the equivalent from golang.org/x/sys/unix. This fixes the Docker cross-compilation build failure for the freebsd/amd64 target. (cherry picked from commit 5fe16c75a075b817f90b7192d8270a7bd6677017)
29 lines
638 B
Go
29 lines
638 B
Go
//go:build freebsd
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package hostmetrics
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import (
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"encoding/binary"
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"fmt"
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"golang.org/x/sys/unix"
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)
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func readFreeBSDARCSize() (uint64, error) {
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// kstat.zfs.misc.arcstats.size holds the current ARC size in bytes.
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// This is a uint64 sysctl on FreeBSD.
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raw, err := unix.SysctlRaw("kstat.zfs.misc.arcstats.size")
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if err != nil {
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return 0, err
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}
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switch len(raw) {
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case 8:
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return binary.NativeEndian.Uint64(raw), nil
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case 4:
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// Defensive: some environments may expose a 32-bit value.
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return uint64(binary.NativeEndian.Uint32(raw)), nil
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default:
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return 0, fmt.Errorf("unexpected sysctl value size: %d", len(raw))
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}
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}
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