open-consul/vendor/github.com/shirou/gopsutil/host/host_darwin.go

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// +build darwin
package host
import (
"bytes"
"context"
"encoding/binary"
"io/ioutil"
"os"
"os/exec"
"runtime"
"strings"
"sync/atomic"
"time"
"unsafe"
"github.com/shirou/gopsutil/internal/common"
"github.com/shirou/gopsutil/process"
"golang.org/x/sys/unix"
)
// from utmpx.h
const USER_PROCESS = 7
func Info() (*InfoStat, error) {
return InfoWithContext(context.Background())
}
func InfoWithContext(ctx context.Context) (*InfoStat, error) {
ret := &InfoStat{
OS: runtime.GOOS,
PlatformFamily: "darwin",
}
hostname, err := os.Hostname()
if err == nil {
ret.Hostname = hostname
}
kernelVersion, err := KernelVersionWithContext(ctx)
if err == nil {
ret.KernelVersion = kernelVersion
}
kernelArch, err := kernelArch()
if err == nil {
ret.KernelArch = kernelArch
}
platform, family, pver, err := PlatformInformation()
if err == nil {
ret.Platform = platform
ret.PlatformFamily = family
ret.PlatformVersion = pver
}
system, role, err := Virtualization()
if err == nil {
ret.VirtualizationSystem = system
ret.VirtualizationRole = role
}
boot, err := BootTime()
if err == nil {
ret.BootTime = boot
ret.Uptime = uptime(boot)
}
procs, err := process.Pids()
if err == nil {
ret.Procs = uint64(len(procs))
}
uuid, err := unix.Sysctl("kern.uuid")
if err == nil && uuid != "" {
ret.HostID = strings.ToLower(uuid)
}
return ret, nil
}
// cachedBootTime must be accessed via atomic.Load/StoreUint64
var cachedBootTime uint64
func BootTime() (uint64, error) {
return BootTimeWithContext(context.Background())
}
func BootTimeWithContext(ctx context.Context) (uint64, error) {
// https://github.com/AaronO/dashd/blob/222e32ef9f7a1f9bea4a8da2c3627c4cb992f860/probe/probe_darwin.go
t := atomic.LoadUint64(&cachedBootTime)
if t != 0 {
return t, nil
}
value, err := unix.Sysctl("kern.boottime")
if err != nil {
return 0, err
}
bytes := []byte(value[:])
var boottime uint64
boottime = uint64(bytes[0]) + uint64(bytes[1])*256 + uint64(bytes[2])*256*256 + uint64(bytes[3])*256*256*256
atomic.StoreUint64(&cachedBootTime, boottime)
return boottime, nil
}
func uptime(boot uint64) uint64 {
return uint64(time.Now().Unix()) - boot
}
func Uptime() (uint64, error) {
return UptimeWithContext(context.Background())
}
func UptimeWithContext(ctx context.Context) (uint64, error) {
boot, err := BootTimeWithContext(ctx)
if err != nil {
return 0, err
}
return uptime(boot), nil
}
func Users() ([]UserStat, error) {
return UsersWithContext(context.Background())
}
func UsersWithContext(ctx context.Context) ([]UserStat, error) {
utmpfile := "/var/run/utmpx"
var ret []UserStat
file, err := os.Open(utmpfile)
if err != nil {
return ret, err
}
defer file.Close()
buf, err := ioutil.ReadAll(file)
if err != nil {
return ret, err
}
u := Utmpx{}
entrySize := int(unsafe.Sizeof(u))
count := len(buf) / entrySize
for i := 0; i < count; i++ {
b := buf[i*entrySize : i*entrySize+entrySize]
var u Utmpx
br := bytes.NewReader(b)
err := binary.Read(br, binary.LittleEndian, &u)
if err != nil {
continue
}
if u.Type != USER_PROCESS {
continue
}
user := UserStat{
User: common.IntToString(u.User[:]),
Terminal: common.IntToString(u.Line[:]),
Host: common.IntToString(u.Host[:]),
Started: int(u.Tv.Sec),
}
ret = append(ret, user)
}
return ret, nil
}
func PlatformInformation() (string, string, string, error) {
return PlatformInformationWithContext(context.Background())
}
func PlatformInformationWithContext(ctx context.Context) (string, string, string, error) {
platform := ""
family := ""
pver := ""
sw_vers, err := exec.LookPath("sw_vers")
if err != nil {
return "", "", "", err
}
p, err := unix.Sysctl("kern.ostype")
if err == nil {
platform = strings.ToLower(p)
}
out, err := invoke.CommandWithContext(ctx, sw_vers, "-productVersion")
if err == nil {
pver = strings.ToLower(strings.TrimSpace(string(out)))
}
// check if the macos server version file exists
_, err = os.Stat("/System/Library/CoreServices/ServerVersion.plist")
// server file doesn't exist
if os.IsNotExist(err) {
family = "Standalone Workstation"
} else {
family = "Server"
}
return platform, family, pver, nil
}
func Virtualization() (string, string, error) {
return VirtualizationWithContext(context.Background())
}
func VirtualizationWithContext(ctx context.Context) (string, string, error) {
return "", "", common.ErrNotImplementedError
}
func KernelVersion() (string, error) {
return KernelVersionWithContext(context.Background())
}
func KernelVersionWithContext(ctx context.Context) (string, error) {
version, err := unix.Sysctl("kern.osrelease")
return strings.ToLower(version), err
}