Vendor psutils and remove neko

plugins/system/ps/host/host_darwin.go

@@ -0,0 +1,139 @@
+// +build darwin
+
+package host
+
+import (
+	"bytes"
+	"encoding/binary"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"runtime"
+	"strconv"
+	"strings"
+	"unsafe"
+
+	common "github.com/shirou/gopsutil/common"
+)
+
+func HostInfo() (*HostInfoStat, error) {
+	ret := &HostInfoStat{
+		OS:             runtime.GOOS,
+		PlatformFamily: "darwin",
+	}
+
+	hostname, err := os.Hostname()
+	if err != nil {
+		return ret, err
+	}
+	ret.Hostname = hostname
+
+	platform, family, version, err := GetPlatformInformation()
+	if err == nil {
+		ret.Platform = platform
+		ret.PlatformFamily = family
+		ret.PlatformVersion = version
+	}
+	system, role, err := GetVirtualization()
+	if err == nil {
+		ret.VirtualizationSystem = system
+		ret.VirtualizationRole = role
+	}
+
+	values, err := common.DoSysctrl("kern.boottime")
+	if err == nil {
+		// ex: { sec = 1392261637, usec = 627534 } Thu Feb 13 12:20:37 2014
+		v := strings.Replace(values[2], ",", "", 1)
+		t, err := strconv.ParseUint(v, 10, 64)
+		if err != nil {
+			return ret, err
+		}
+		ret.Uptime = t
+	}
+
+	return ret, nil
+}
+
+func BootTime() (uint64, error) {
+	values, err := common.DoSysctrl("kern.boottime")
+	if err != nil {
+		return 0, err
+	}
+	// ex: { sec = 1392261637, usec = 627534 } Thu Feb 13 12:20:37 2014
+	v := strings.Replace(values[2], ",", "", 1)
+
+	boottime, err := strconv.ParseInt(v, 10, 64)
+	if err != nil {
+		return 0, err
+	}
+
+	return uint64(boottime), nil
+}
+
+func Users() ([]UserStat, error) {
+	utmpfile := "/var/run/utmpx"
+	var ret []UserStat
+
+	file, err := os.Open(utmpfile)
+	if err != nil {
+		return ret, err
+	}
+
+	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 != 7 { // skip if not USERPROCESS
+			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 GetPlatformInformation() (string, string, string, error) {
+	platform := ""
+	family := ""
+	version := ""
+
+	out, err := exec.Command("uname", "-s").Output()
+	if err == nil {
+		platform = strings.ToLower(strings.TrimSpace(string(out)))
+	}
+
+	out, err = exec.Command("uname", "-r").Output()
+	if err == nil {
+		version = strings.ToLower(strings.TrimSpace(string(out)))
+	}
+
+	return platform, family, version, nil
+}
+
+func GetVirtualization() (string, string, error) {
+	system := ""
+	role := ""
+
+	return system, role, nil
+}