func (p *Process) Name() (string, error) {
k, err := p.getKProc()
if err != nil {
return "", err
}
return common.IntToString(k.Proc.P_comm[:]), 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 Users() ([]UserStat, error) {
utmpfile := "/var/run/utmp"
file, err := os.Open(utmpfile)
if err != nil {
return nil, err
}
buf, err := ioutil.ReadAll(file)
if err != nil {
return nil, err
}
u := utmp{}
entrySize := int(unsafe.Sizeof(u))
count := len(buf) / entrySize
ret := make([]UserStat, 0, count)
for i := 0; i < count; i++ {
b := buf[i*entrySize : i*entrySize+entrySize]
var u utmp
br := bytes.NewReader(b)
err := binary.Read(br, binary.LittleEndian, &u)
if err != nil {
continue
}
user := UserStat{
User: common.IntToString(u.User[:]),
Terminal: common.IntToString(u.Line[:]),
Host: common.IntToString(u.Host[:]),
Started: int(u.Tv.TvSec),
}
ret = append(ret, user)
}
return ret, nil
}
func DiskIOCounters() (map[string]DiskIOCountersStat, error) {
// statinfo->devinfo->devstat
// /usr/include/devinfo.h
// sysctl.sysctl ('kern.devstat.all', 0)
ret := make(map[string]DiskIOCountersStat)
mib := []int32{CTLKern, KernDevstat, KernDevstatAll}
buf, length, err := common.CallSyscall(mib)
if err != nil {
return nil, err
}
ds := Devstat{}
devstatLen := int(unsafe.Sizeof(ds))
count := int(length / uint64(devstatLen))
buf = buf[8:] // devstat.all has version in the head.
// parse buf to Devstat
for i := 0; i < count; i++ {
b := buf[i*devstatLen : i*devstatLen+devstatLen]
d, err := parseDevstat(b)
if err != nil {
continue
}
un := strconv.Itoa(int(d.Unit_number))
name := common.IntToString(d.Device_name[:]) + un
ds := DiskIOCountersStat{
ReadCount: d.Operations[DEVSTAT_READ],
WriteCount: d.Operations[DEVSTAT_WRITE],
ReadBytes: d.Bytes[DEVSTAT_READ],
WriteBytes: d.Bytes[DEVSTAT_WRITE],
ReadTime: d.Duration[DEVSTAT_READ].Compute(),
WriteTime: d.Duration[DEVSTAT_WRITE].Compute(),
Name: name,
}
ret[name] = ds
}
return ret, nil
}
func DiskPartitions(all bool) ([]DiskPartitionStat, error) {
var ret []DiskPartitionStat
count, err := Getfsstat(nil, MntWait)
if err != nil {
return ret, err
}
fs := make([]Statfs_t, count)
_, err = Getfsstat(fs, MntWait)
for _, stat := range fs {
opts := "rw"
if stat.Flags&MntReadOnly != 0 {
opts = "ro"
}
if stat.Flags&MntSynchronous != 0 {
opts += ",sync"
}
if stat.Flags&MntNoExec != 0 {
opts += ",noexec"
}
if stat.Flags&MntNoSuid != 0 {
opts += ",nosuid"
}
if stat.Flags&MntUnion != 0 {
opts += ",union"
}
if stat.Flags&MntAsync != 0 {
opts += ",async"
}
if stat.Flags&MntSuidDir != 0 {
opts += ",suiddir"
}
if stat.Flags&MntSoftDep != 0 {
opts += ",softdep"
}
if stat.Flags&MntNoSymFollow != 0 {
opts += ",nosymfollow"
}
if stat.Flags&MntGEOMJournal != 0 {
opts += ",gjounalc"
}
if stat.Flags&MntMultilabel != 0 {
opts += ",multilabel"
}
if stat.Flags&MntACLs != 0 {
opts += ",acls"
}
if stat.Flags&MntNoATime != 0 {
opts += ",noattime"
}
if stat.Flags&MntClusterRead != 0 {
opts += ",nocluster"
}
if stat.Flags&MntClusterWrite != 0 {
opts += ",noclusterw"
}
if stat.Flags&MntNFS4ACLs != 0 {
opts += ",nfs4acls"
}
d := DiskPartitionStat{
Device: common.IntToString(stat.Mntfromname[:]),
Mountpoint: common.IntToString(stat.Mntonname[:]),
Fstype: common.IntToString(stat.Fstypename[:]),
Opts: opts,
}
ret = append(ret, d)
}
return ret, nil
}
func getFsType(stat syscall.Statfs_t) string {
return common.IntToString(stat.Fstypename[:])
}
func DiskPartitions(all bool) ([]DiskPartitionStat, error) {
var ret []DiskPartitionStat
// get length
count, err := syscall.Getfsstat(nil, MNT_WAIT)
if err != nil {
return ret, err
}
fs := make([]Statfs, count)
_, err = Getfsstat(fs, MNT_WAIT)
for _, stat := range fs {
opts := "rw"
if stat.Flags&MNT_RDONLY != 0 {
opts = "ro"
}
if stat.Flags&MNT_SYNCHRONOUS != 0 {
opts += ",sync"
}
if stat.Flags&MNT_NOEXEC != 0 {
opts += ",noexec"
}
if stat.Flags&MNT_NOSUID != 0 {
opts += ",nosuid"
}
if stat.Flags&MNT_UNION != 0 {
opts += ",union"
}
if stat.Flags&MNT_ASYNC != 0 {
opts += ",async"
}
if stat.Flags&MNT_SUIDDIR != 0 {
opts += ",suiddir"
}
if stat.Flags&MNT_SOFTDEP != 0 {
opts += ",softdep"
}
if stat.Flags&MNT_NOSYMFOLLOW != 0 {
opts += ",nosymfollow"
}
if stat.Flags&MNT_GJOURNAL != 0 {
opts += ",gjounalc"
}
if stat.Flags&MNT_MULTILABEL != 0 {
opts += ",multilabel"
}
if stat.Flags&MNT_ACLS != 0 {
opts += ",acls"
}
if stat.Flags&MNT_NOATIME != 0 {
opts += ",noattime"
}
if stat.Flags&MNT_NOCLUSTERR != 0 {
opts += ",nocluster"
}
if stat.Flags&MNT_NOCLUSTERW != 0 {
opts += ",noclusterw"
}
if stat.Flags&MNT_NFS4ACLS != 0 {
opts += ",nfs4acls"
}
d := DiskPartitionStat{
Device: common.IntToString(stat.Mntfromname[:]),
Mountpoint: common.IntToString(stat.Mntonname[:]),
Fstype: common.IntToString(stat.Fstypename[:]),
Opts: opts,
}
ret = append(ret, d)
}
return ret, nil
}