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process_status.go
331 lines (304 loc) · 7.88 KB
/
process_status.go
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package proc
import (
"io/ioutil"
"strconv"
"strings"
)
// Provides much of the information from ProcessStatm and ProcessStat
type ProcessStatus struct {
Name string
State string
Tgid uint64
Pid uint64
PPid int64
TracerPid uint64
RealUid uint64
EffectiveUid uint64
SavedSetUid uint64
FilesystemUid uint64
RealGid uint64
EffectiveGid uint64
SavedSetGid uint64
FilesystemGid uint64
FDSize uint64
Groups []int64
VmPeak uint64
VmSize uint64
VmLck uint64
VmHWM uint64
VmRSS uint64
VmData uint64
VmStk uint64
VmExe uint64
VmLib uint64
VmPTE uint64
VmSwap uint64
Threads uint64
SigQLength uint64
SigQLimit uint64
SigPnd uint64
ShdPnd uint64
SigBlk uint64
SigIgn uint64
SigCgt uint64
CapInh uint64
CapPrm uint64
CapEff uint64
CapBnd uint64
Seccomp uint8
CpusAllowed []uint32
MemsAllowed []uint32
VoluntaryCtxtSwitches uint64
NonvoluntaryCtxtSwitches uint64
}
func ReadProcessStatus(path string) (*ProcessStatus, error) {
b, err := ioutil.ReadFile(path)
if err != nil {
return nil, err
}
status := ProcessStatus{}
lines := strings.Split(string(b), "\n")
for _, line := range lines {
if strings.Index(line, ":") == -1 {
continue
}
l := strings.Split(line, ":")
k := strings.TrimSpace(l[0])
v := strings.TrimSpace(l[1])
switch k {
case "Name":
status.Name = v
case "State":
status.State = v
case "Tgid":
if status.Tgid, err = strconv.ParseUint(v, 10, 64); err != nil {
return nil, err
}
case "Pid":
if status.Pid, err = strconv.ParseUint(v, 10, 64); err != nil {
return nil, err
}
case "PPid":
if status.PPid, err = strconv.ParseInt(v, 10, 64); err != nil {
return nil, err
}
case "TracerPid":
if status.TracerPid, err = strconv.ParseUint(v, 10, 64); err != nil {
return nil, err
}
case "Uid":
if f := strings.Fields(v); len(f) == 4 {
if status.RealUid, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
if status.EffectiveUid, err = strconv.ParseUint(f[1], 10, 64); err != nil {
return nil, err
}
if status.SavedSetUid, err = strconv.ParseUint(f[2], 10, 64); err != nil {
return nil, err
}
if status.FilesystemUid, err = strconv.ParseUint(f[3], 10, 64); err != nil {
return nil, err
}
}
case "Gid":
if f := strings.Fields(v); len(f) == 4 {
if status.RealGid, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
if status.EffectiveGid, err = strconv.ParseUint(f[1], 10, 64); err != nil {
return nil, err
}
if status.SavedSetGid, err = strconv.ParseUint(f[2], 10, 64); err != nil {
return nil, err
}
if status.FilesystemGid, err = strconv.ParseUint(f[3], 10, 64); err != nil {
return nil, err
}
}
case "FDSize":
if status.FDSize, err = strconv.ParseUint(v, 10, 64); err != nil {
return nil, err
}
case "Groups":
{
f := strings.Fields(v)
status.Groups = make([]int64, len(f))
for i := range status.Groups {
if status.Groups[i], err = strconv.ParseInt(f[i], 10, 64); err != nil {
return nil, err
}
}
}
case "VmPeak":
{
f := strings.Fields(v)
if status.VmPeak, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
}
case "VmSize":
{
f := strings.Fields(v)
if status.VmSize, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
}
case "VmLck":
{
f := strings.Fields(v)
if status.VmLck, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
}
case "VmHWM":
{
f := strings.Fields(v)
if status.VmHWM, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
}
case "VmRSS":
{
f := strings.Fields(v)
if status.VmRSS, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
}
case "VmData":
{
f := strings.Fields(v)
if status.VmData, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
}
case "VmStk":
{
f := strings.Fields(v)
if status.VmStk, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
}
case "VmExe":
{
f := strings.Fields(v)
if status.VmExe, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
}
case "VmLib":
{
f := strings.Fields(v)
if status.VmLib, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
}
case "VmPTE":
{
f := strings.Fields(v)
if status.VmPTE, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
}
case "VmSwap":
{
f := strings.Fields(v)
if status.VmSwap, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
}
case "Threads":
if status.Threads, err = strconv.ParseUint(v, 10, 64); err != nil {
return nil, err
}
case "SigQ":
{
if f := strings.Split(v, "/"); len(f) == 2 {
if status.SigQLength, err = strconv.ParseUint(f[0], 10, 64); err != nil {
return nil, err
}
if status.SigQLimit, err = strconv.ParseUint(f[1], 10, 64); err != nil {
return nil, err
}
}
}
case "SigPnd":
if status.SigPnd, err = strconv.ParseUint(v, 16, 64); err != nil {
return nil, err
}
case "ShdPnd":
if status.ShdPnd, err = strconv.ParseUint(v, 16, 64); err != nil {
return nil, err
}
case "SigBlk":
if status.SigBlk, err = strconv.ParseUint(v, 16, 64); err != nil {
return nil, err
}
case "SigIgn":
if status.SigIgn, err = strconv.ParseUint(v, 16, 64); err != nil {
return nil, err
}
case "SigCgt":
if status.SigCgt, err = strconv.ParseUint(v, 16, 64); err != nil {
return nil, err
}
case "CapInh":
if status.CapInh, err = strconv.ParseUint(v, 16, 64); err != nil {
return nil, err
}
case "CapPrm":
if status.CapPrm, err = strconv.ParseUint(v, 16, 64); err != nil {
return nil, err
}
case "CapEff":
if status.CapEff, err = strconv.ParseUint(v, 16, 64); err != nil {
return nil, err
}
case "CapBnd":
if status.CapBnd, err = strconv.ParseUint(v, 16, 64); err != nil {
return nil, err
}
case "Seccomp":
{
var n uint64
if n, err = strconv.ParseUint(v, 10, 8); err != nil {
return nil, err
}
status.Seccomp = uint8(n)
}
case "Cpus_allowed":
{
var n uint64
f := strings.Split(v, ",")
status.CpusAllowed = make([]uint32, len(f))
for i := range status.CpusAllowed {
if n, err = strconv.ParseUint(f[i], 16, 32); err != nil {
return nil, err
}
status.CpusAllowed[i] = uint32(n)
}
}
case "Mems_allowed":
{
var n uint64
f := strings.Split(v, ",")
status.MemsAllowed = make([]uint32, len(f))
for i := range status.MemsAllowed {
if n, err = strconv.ParseUint(f[i], 16, 32); err != nil {
return nil, err
}
status.MemsAllowed[i] = uint32(n)
}
}
case "voluntary_ctxt_switches":
if status.VoluntaryCtxtSwitches, err = strconv.ParseUint(v, 10, 64); err != nil {
return nil, err
}
case "nonvoluntary_ctxt_switches":
if status.NonvoluntaryCtxtSwitches, err = strconv.ParseUint(v, 10, 64); err != nil {
return nil, err
}
}
}
return &status, nil
}