open-consul/vendor/github.com/shirou/gopsutil/v3/process/process_openbsd.go

363 lines
7.7 KiB
Go

// +build openbsd
package process
import (
"C"
"context"
"os/exec"
"path/filepath"
"strconv"
"strings"
"unsafe"
cpu "github.com/shirou/gopsutil/v3/cpu"
"github.com/shirou/gopsutil/v3/internal/common"
mem "github.com/shirou/gopsutil/v3/mem"
net "github.com/shirou/gopsutil/v3/net"
"golang.org/x/sys/unix"
)
func pidsWithContext(ctx context.Context) ([]int32, error) {
var ret []int32
procs, err := ProcessesWithContext(ctx)
if err != nil {
return ret, nil
}
for _, p := range procs {
ret = append(ret, p.Pid)
}
return ret, nil
}
func (p *Process) PpidWithContext(ctx context.Context) (int32, error) {
k, err := p.getKProc()
if err != nil {
return 0, err
}
return k.Ppid, nil
}
func (p *Process) NameWithContext(ctx context.Context) (string, error) {
k, err := p.getKProc()
if err != nil {
return "", err
}
name := common.IntToString(k.Comm[:])
if len(name) >= 15 {
cmdlineSlice, err := p.CmdlineSliceWithContext(ctx)
if err != nil {
return "", err
}
if len(cmdlineSlice) > 0 {
extendedName := filepath.Base(cmdlineSlice[0])
if strings.HasPrefix(extendedName, p.name) {
name = extendedName
} else {
name = cmdlineSlice[0]
}
}
}
return name, nil
}
func (p *Process) ExeWithContext(ctx context.Context) (string, error) {
return "", common.ErrNotImplementedError
}
func (p *Process) CmdlineSliceWithContext(ctx context.Context) ([]string, error) {
mib := []int32{CTLKern, KernProcArgs, p.Pid, KernProcArgv}
buf, _, err := common.CallSyscall(mib)
if err != nil {
return nil, err
}
argc := 0
argvp := unsafe.Pointer(&buf[0])
argv := *(**C.char)(unsafe.Pointer(argvp))
size := unsafe.Sizeof(argv)
var strParts []string
for argv != nil {
strParts = append(strParts, C.GoString(argv))
argc++
argv = *(**C.char)(unsafe.Pointer(uintptr(argvp) + uintptr(argc)*size))
}
return strParts, nil
}
func (p *Process) CmdlineWithContext(ctx context.Context) (string, error) {
argv, err := p.CmdlineSliceWithContext(ctx)
if err != nil {
return "", err
}
return strings.Join(argv, " "), nil
}
func (p *Process) createTimeWithContext(ctx context.Context) (int64, error) {
return 0, common.ErrNotImplementedError
}
func (p *Process) ParentWithContext(ctx context.Context) (*Process, error) {
return nil, common.ErrNotImplementedError
}
func (p *Process) StatusWithContext(ctx context.Context) ([]string, error) {
k, err := p.getKProc()
if err != nil {
return []string{""}, err
}
var s string
switch k.Stat {
case SIDL:
case SRUN:
case SONPROC:
s = Running
case SSLEEP:
s = Sleep
case SSTOP:
s = Stop
case SDEAD:
s = Zombie
}
return []string{s}, nil
}
func (p *Process) ForegroundWithContext(ctx context.Context) (bool, error) {
// see https://github.com/shirou/gopsutil/issues/596#issuecomment-432707831 for implementation details
pid := p.Pid
ps, err := exec.LookPath("ps")
if err != nil {
return false, err
}
out, err := invoke.CommandWithContext(ctx, ps, "-o", "stat=", "-p", strconv.Itoa(int(pid)))
if err != nil {
return false, err
}
return strings.IndexByte(string(out), '+') != -1, nil
}
func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
k, err := p.getKProc()
if err != nil {
return nil, err
}
uids := make([]int32, 0, 3)
uids = append(uids, int32(k.Ruid), int32(k.Uid), int32(k.Svuid))
return uids, nil
}
func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
k, err := p.getKProc()
if err != nil {
return nil, err
}
gids := make([]int32, 0, 3)
gids = append(gids, int32(k.Rgid), int32(k.Ngroups), int32(k.Svgid))
return gids, nil
}
func (p *Process) GroupsWithContext(ctx context.Context) ([]int32, error) {
k, err := p.getKProc()
if err != nil {
return nil, err
}
groups := make([]int32, k.Ngroups)
for i := int16(0); i < k.Ngroups; i++ {
groups[i] = int32(k.Groups[i])
}
return groups, nil
}
func (p *Process) TerminalWithContext(ctx context.Context) (string, error) {
k, err := p.getKProc()
if err != nil {
return "", err
}
ttyNr := uint64(k.Tdev)
termmap, err := getTerminalMap()
if err != nil {
return "", err
}
return termmap[ttyNr], nil
}
func (p *Process) NiceWithContext(ctx context.Context) (int32, error) {
k, err := p.getKProc()
if err != nil {
return 0, err
}
return int32(k.Nice), nil
}
func (p *Process) IOCountersWithContext(ctx context.Context) (*IOCountersStat, error) {
k, err := p.getKProc()
if err != nil {
return nil, err
}
return &IOCountersStat{
ReadCount: uint64(k.Uru_inblock),
WriteCount: uint64(k.Uru_oublock),
}, nil
}
func (p *Process) NumThreadsWithContext(ctx context.Context) (int32, error) {
/* not supported, just return 1 */
return 1, nil
}
func (p *Process) TimesWithContext(ctx context.Context) (*cpu.TimesStat, error) {
k, err := p.getKProc()
if err != nil {
return nil, err
}
return &cpu.TimesStat{
CPU: "cpu",
User: float64(k.Uutime_sec) + float64(k.Uutime_usec)/1000000,
System: float64(k.Ustime_sec) + float64(k.Ustime_usec)/1000000,
}, nil
}
func (p *Process) MemoryInfoWithContext(ctx context.Context) (*MemoryInfoStat, error) {
k, err := p.getKProc()
if err != nil {
return nil, err
}
pageSize, err := mem.GetpageSizeWithContext(ctx)
if err != nil {
return nil, err
}
return &MemoryInfoStat{
RSS: uint64(k.Vm_rssize) * pageSize,
VMS: uint64(k.Vm_tsize) + uint64(k.Vm_dsize) +
uint64(k.Vm_ssize),
}, nil
}
func (p *Process) ChildrenWithContext(ctx context.Context) ([]*Process, error) {
pids, err := common.CallPgrepWithContext(ctx, invoke, p.Pid)
if err != nil {
return nil, err
}
ret := make([]*Process, 0, len(pids))
for _, pid := range pids {
np, err := NewProcessWithContext(ctx, pid)
if err != nil {
return nil, err
}
ret = append(ret, np)
}
return ret, nil
}
func (p *Process) ConnectionsWithContext(ctx context.Context) ([]net.ConnectionStat, error) {
return nil, common.ErrNotImplementedError
}
func (p *Process) ConnectionsMaxWithContext(ctx context.Context, max int) ([]net.ConnectionStat, error) {
return nil, common.ErrNotImplementedError
}
func ProcessesWithContext(ctx context.Context) ([]*Process, error) {
results := []*Process{}
buf, length, err := callKernProcSyscall(KernProcAll, 0)
if err != nil {
return results, err
}
// get kinfo_proc size
count := int(length / uint64(sizeOfKinfoProc))
// parse buf to procs
for i := 0; i < count; i++ {
b := buf[i*sizeOfKinfoProc : (i+1)*sizeOfKinfoProc]
k, err := parseKinfoProc(b)
if err != nil {
continue
}
p, err := NewProcessWithContext(ctx, int32(k.Pid))
if err != nil {
continue
}
results = append(results, p)
}
return results, nil
}
func (p *Process) getKProc() (*KinfoProc, error) {
buf, length, err := callKernProcSyscall(KernProcPID, p.Pid)
if err != nil {
return nil, err
}
if length != sizeOfKinfoProc {
return nil, err
}
k, err := parseKinfoProc(buf)
if err != nil {
return nil, err
}
return &k, nil
}
func callKernProcSyscall(op int32, arg int32) ([]byte, uint64, error) {
mib := []int32{CTLKern, KernProc, op, arg, sizeOfKinfoProc, 0}
mibptr := unsafe.Pointer(&mib[0])
miblen := uint64(len(mib))
length := uint64(0)
_, _, err := unix.Syscall6(
unix.SYS___SYSCTL,
uintptr(mibptr),
uintptr(miblen),
0,
uintptr(unsafe.Pointer(&length)),
0,
0)
if err != 0 {
return nil, length, err
}
count := int32(length / uint64(sizeOfKinfoProc))
mib = []int32{CTLKern, KernProc, op, arg, sizeOfKinfoProc, count}
mibptr = unsafe.Pointer(&mib[0])
miblen = uint64(len(mib))
// get proc info itself
buf := make([]byte, length)
_, _, err = unix.Syscall6(
unix.SYS___SYSCTL,
uintptr(mibptr),
uintptr(miblen),
uintptr(unsafe.Pointer(&buf[0])),
uintptr(unsafe.Pointer(&length)),
0,
0)
if err != 0 {
return buf, length, err
}
return buf, length, nil
}