152 lines
3.1 KiB
Go
152 lines
3.1 KiB
Go
// +build freebsd
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package host
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import (
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"bytes"
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"context"
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"encoding/binary"
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"io/ioutil"
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"math"
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"os"
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"strings"
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"unsafe"
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"github.com/shirou/gopsutil/internal/common"
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"github.com/shirou/gopsutil/process"
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"golang.org/x/sys/unix"
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)
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const (
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UTNameSize = 16 /* see MAXLOGNAME in <sys/param.h> */
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UTLineSize = 8
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UTHostSize = 16
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)
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func HostIDWithContext(ctx context.Context) (string, error) {
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uuid, err := unix.Sysctl("kern.hostuuid")
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if err != nil {
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return "", err
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}
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return strings.ToLower(uuid), err
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}
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func numProcs(ctx context.Context) (uint64, error) {
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procs, err := process.PidsWithContext(ctx)
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if err != nil {
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return 0, err
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}
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return uint64(len(procs)), nil
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}
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func UsersWithContext(ctx context.Context) ([]UserStat, error) {
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utmpfile := "/var/run/utx.active"
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if !common.PathExists(utmpfile) {
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utmpfile = "/var/run/utmp" // before 9.0
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return getUsersFromUtmp(utmpfile)
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}
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var ret []UserStat
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file, err := os.Open(utmpfile)
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if err != nil {
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return ret, err
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}
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defer file.Close()
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buf, err := ioutil.ReadAll(file)
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if err != nil {
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return ret, err
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}
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entrySize := sizeOfUtmpx
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count := len(buf) / entrySize
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for i := 0; i < count; i++ {
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b := buf[i*sizeOfUtmpx : (i+1)*sizeOfUtmpx]
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var u Utmpx
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br := bytes.NewReader(b)
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err := binary.Read(br, binary.BigEndian, &u)
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if err != nil || u.Type != 4 {
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continue
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}
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sec := math.Floor(float64(u.Tv) / 1000000)
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user := UserStat{
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User: common.IntToString(u.User[:]),
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Terminal: common.IntToString(u.Line[:]),
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Host: common.IntToString(u.Host[:]),
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Started: int(sec),
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}
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ret = append(ret, user)
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}
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return ret, nil
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}
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func PlatformInformationWithContext(ctx context.Context) (string, string, string, error) {
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platform, err := unix.Sysctl("kern.ostype")
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if err != nil {
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return "", "", "", err
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}
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version, err := unix.Sysctl("kern.osrelease")
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if err != nil {
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return "", "", "", err
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}
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return strings.ToLower(platform), "", strings.ToLower(version), nil
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}
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func VirtualizationWithContext(ctx context.Context) (string, string, error) {
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return "", "", common.ErrNotImplementedError
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}
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// before 9.0
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func getUsersFromUtmp(utmpfile string) ([]UserStat, error) {
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var ret []UserStat
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file, err := os.Open(utmpfile)
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if err != nil {
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return ret, err
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}
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defer file.Close()
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buf, err := ioutil.ReadAll(file)
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if err != nil {
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return ret, err
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}
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u := Utmp{}
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entrySize := int(unsafe.Sizeof(u))
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count := len(buf) / entrySize
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for i := 0; i < count; i++ {
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b := buf[i*entrySize : i*entrySize+entrySize]
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var u Utmp
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br := bytes.NewReader(b)
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err := binary.Read(br, binary.LittleEndian, &u)
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if err != nil || u.Time == 0 {
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continue
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}
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user := UserStat{
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User: common.IntToString(u.Name[:]),
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Terminal: common.IntToString(u.Line[:]),
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Host: common.IntToString(u.Host[:]),
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Started: int(u.Time),
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}
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ret = append(ret, user)
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}
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return ret, nil
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}
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func SensorsTemperaturesWithContext(ctx context.Context) ([]TemperatureStat, error) {
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return []TemperatureStat{}, common.ErrNotImplementedError
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}
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func KernelVersionWithContext(ctx context.Context) (string, error) {
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_, _, version, err := PlatformInformationWithContext(ctx)
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return version, err
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}
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