func babySit(process *os.Process) int {
// Forward all signals to the app
sigchan := make(chan os.Signal, 1)
sigutil.CatchAll(sigchan)
go func() {
for sig := range sigchan {
if sig == syscall.SIGCHLD {
continue
}
process.Signal(sig)
}
}()
// Wait for the app to exit. Also, as pid 1 it's our job to reap all
// orphaned zombies.
var wstatus syscall.WaitStatus
for {
pid, err := syscall.Wait4(-1, &wstatus, 0, nil)
if err == nil && pid == process.Pid {
break
}
}
return wstatus.ExitStatus()
}
// StartProcess kicks off the event loop and forever waits for signals from
// the traced process. This is currently done in a super-silly fashion and will
// hopefully benefit from Go channels/goroutines in the future.
func (p *Process) StartProcess() (ret int) {
var status syscall.WaitStatus
L:
for {
_, err := syscall.Wait4( /*p.Pid*/ -1, &status, 0, nil)
p.isRunning = false
switch {
// status == 0 means terminated??
case status.Exited() || status == 0 || err != nil:
ret = status.ExitStatus()
break L
case status.Stopped():
if bp, hit := p.InBreakpoint(); hit {
p.handleBreakpoint(bp)
}
//case status.Continued():
//case status.CoreDump():
//case status.Signaled():
//case status.ExitStatus():
//case status.StopSignal():
//case status.TrapCause():
default:
// fmt.Printf("Got status: %v\n", status)
}
p.Continue()
}
return
}
func handleSigchld(mpid int) *resultPack {
for {
var status syscall.WaitStatus
var spid int
var err error
spid, err = syscall.Wait4(-mpid, &status, syscall.WNOHANG|syscall.WALL, nil)
if err != nil {
poePanic(err, "wait4 failed")
} else if spid == 0 {
return nil
}
if spid == mpid && status.Exited() {
return &resultPack{POE_SUCCESS, status.ExitStatus(), ""}
} else if spid == mpid && status.Signaled() {
return &resultPack{POE_SIGNALED, -1, fmt.Sprintf("Program terminated with signal %d (%s)", int(status.Signal()), status.Signal().String())}
} else if status.Stopped() {
e := status >> 16 & 0xff
switch e {
case PTRACE_EVENT_SECCOMP:
if res := handleSyscall(spid); res != nil {
return res
}
case syscall.PTRACE_EVENT_CLONE, syscall.PTRACE_EVENT_FORK, syscall.PTRACE_EVENT_VFORK:
syscall.PtraceCont(spid, 0)
default:
syscall.PtraceCont(spid, int(status.StopSignal()))
}
}
}
}
func printStatus(ws syscall.WaitStatus) string {
switch {
case ws.Exited():
es := ws.ExitStatus()
if es == 0 {
return ""
}
return fmt.Sprintf("exited %v", es)
case ws.Signaled():
msg := fmt.Sprintf("signaled %v", ws.Signal())
if ws.CoreDump() {
msg += " (core dumped)"
}
return msg
case ws.Stopped():
msg := fmt.Sprintf("stopped %v", ws.StopSignal())
trap := ws.TrapCause()
if trap != -1 {
msg += fmt.Sprintf(" (trapped %v)", trap)
}
return msg
case ws.Continued():
return "continued"
default:
return fmt.Sprintf("unknown status %v", ws)
}
}
// checkForDeath tries to clean up zombies and then checks if the
// process group is empty.
//
// It returns "true" if the answer is yes and there are no grace pings left
//
func (n *nelly) checkForDeath() bool {
// Check if there are any zombies to eat. Process.Wait() doesn't
// support the POSIX WNOHANG for portability reasons, so let's use
// the syscall.Wait4() which is POSIX-only.
var w syscall.WaitStatus
rusage := syscall.Rusage{}
zpid, err := syscall.Wait4(-1, &w, syscall.WNOHANG, &rusage)
if err != nil {
n.Error("Error in Wait4: %s", err.Error())
}
if zpid > 0 {
n.Error("Ate a tasty zombie (pid was %d, status was %d)", zpid, w.ExitStatus())
}
if n.processGroupIsEmpty() {
n.startGracePings--
if n.startGracePings <= 0 {
n.Error("Process group [%d] empty - exiting and hoping init sorts it all out", n.pgid)
return true
} else {
n.Error("Process group [%d] empty - grace pings left [%d]", n.pgid, n.startGracePings)
}
} else {
// We've had a good ping, no more Mr Nice Guy
n.startGracePings = 0
}
return false
}
// waitStatusToError converts syscall.WaitStatus to an Error.
func waitStatusToError(ws syscall.WaitStatus) error {
switch {
case ws.Exited():
es := ws.ExitStatus()
if es == 0 {
return nil
}
return errors.New(fmt.Sprint(es))
case ws.Signaled():
msg := fmt.Sprintf("signaled %v", ws.Signal())
if ws.CoreDump() {
msg += " (core dumped)"
}
return errors.New(msg)
case ws.Stopped():
msg := fmt.Sprintf("stopped %v", ws.StopSignal())
trap := ws.TrapCause()
if trap != -1 {
msg += fmt.Sprintf(" (trapped %v)", trap)
}
return errors.New(msg)
/*
case ws.Continued():
return newUnexitedStateUpdate("continued")
*/
default:
return fmt.Errorf("unknown WaitStatus", ws)
}
}
func Shell(f string, v ...interface{}) (retCode int, stdout, stderr string) {
var so, se bytes.Buffer
command := exec.Command("bash", "-c", fmt.Sprintf(f, v...))
command.Stdout = &so
command.Stderr = &se
var waitStatus syscall.WaitStatus
if err := command.Run(); err != nil {
if exitError, ok := err.(*exec.ExitError); ok {
waitStatus = exitError.Sys().(syscall.WaitStatus)
retCode = waitStatus.ExitStatus()
} else {
// looks like a system error, for example, IO error
panic(err)
}
} else {
waitStatus = command.ProcessState.Sys().(syscall.WaitStatus)
retCode = waitStatus.ExitStatus()
}
stdout = string(so.Bytes())
stderr = string(se.Bytes())
return
}
func ChildWaitingFunc(pid int, sig chan *ChildWaitData) {
var status syscall.WaitStatus
var rusage syscall.Rusage
result := &ChildWaitData{}
for {
wpid, err := syscall.Wait4(pid, &status, syscall.WUNTRACED|syscall.WCONTINUED, &rusage)
if wpid != pid {
continue
}
if status.Exited() {
result.ExitCode = uint32(status.ExitStatus())
break
}
if status.Stopped() {
result.SuccessCode |= EF_STOPPED
result.StopSignal = uint32(status.StopSignal())
syscall.Kill(pid, syscall.SIGKILL)
}
if status.Signaled() {
result.SuccessCode |= EF_KILLED_BY_OTHER
result.KillSignal = uint32(status.Signal())
break
}
if err != nil {
break
}
}
result.RusageCpuUser = time.Nanosecond * time.Duration(rusage.Utime.Nano())
result.RusageCpuKernel = time.Nanosecond * time.Duration(rusage.Stime.Nano())
sig <- result
close(sig)
}
// waitStatusToStateUpdate converts syscall.WaitStatus to a StateUpdate.
func waitStatusToStateUpdate(ws syscall.WaitStatus) *stateUpdate {
switch {
case ws.Exited():
es := ws.ExitStatus()
if es == 0 {
return newExitedStateUpdate(ok)
}
return newExitedStateUpdate(newFailure(fmt.Sprint(es)))
case ws.Signaled():
msg := fmt.Sprintf("signaled %v", ws.Signal())
if ws.CoreDump() {
msg += " (core dumped)"
}
return newUnexitedStateUpdate(msg)
case ws.Stopped():
msg := fmt.Sprintf("stopped %v", ws.StopSignal())
trap := ws.TrapCause()
if trap != -1 {
msg += fmt.Sprintf(" (trapped %v)", trap)
}
return newUnexitedStateUpdate(msg)
case ws.Continued():
return newUnexitedStateUpdate("continued")
default:
return newUnexitedStateUpdate(fmt.Sprint("unknown status", ws))
}
}
func babySit(process *os.Process) int {
log := logger.New("fn", "babySit")
// Forward all signals to the app
sigchan := make(chan os.Signal, 1)
sigutil.CatchAll(sigchan)
go func() {
for sig := range sigchan {
log.Info("received signal", "type", sig)
if sig == syscall.SIGCHLD {
continue
}
log.Info("forwarding signal to command", "type", sig)
process.Signal(sig)
}
}()
// Wait for the app to exit. Also, as pid 1 it's our job to reap all
// orphaned zombies.
var wstatus syscall.WaitStatus
for {
pid, err := syscall.Wait4(-1, &wstatus, 0, nil)
if err == nil && pid == process.Pid {
break
}
}
if wstatus.Signaled() {
log.Info("command exited due to signal")
return 0
}
return wstatus.ExitStatus()
}
func ConvertOfficeDocToPdf2(file string) {
args := []string{"-f", "pdf",
"-eSelectPdfVersion=1",
"-eReduceImageResolution=true",
"-eMaxImageResolution=300",
"-p",
"8200",
"-o",
"~/foo1.pdf",
"~/foo.pptx",
}
cmd := exec.Command("unoconv", args...)
var waitStatus syscall.WaitStatus
if err := cmd.Run(); err != nil {
//fmt.Printf("Error:", err)
// Did the command fail because of an unsuccessful exit code
if exitError, ok := err.(*exec.ExitError); ok {
waitStatus = exitError.Sys().(syscall.WaitStatus)
fmt.Printf("Failed: %d", waitStatus.ExitStatus())
}
} else {
// Command was successful
waitStatus = cmd.ProcessState.Sys().(syscall.WaitStatus)
fmt.Printf("Success: %d", waitStatus.ExitStatus())
}
}
func ExecBash(command string, args []string) (int, string, error) {
cmd := exec.Command(command, args...)
var waitStatus syscall.WaitStatus
//Stdout buffer
cmdOutput := &bytes.Buffer{}
//Attach buffer to command stdout
cmd.Stdout = cmdOutput
//Execute command
err := cmd.Run()
defer func() {
if r := recover(); r != nil {
fmt.Printf("Command:%s execute error\n", command)
}
}()
if err != nil {
if exitError, ok := err.(*exec.ExitError); ok {
waitStatus = exitError.Sys().(syscall.WaitStatus)
return waitStatus.ExitStatus(), "", err
} else {
fmt.Println("something wrong")
}
}
waitStatus = cmd.ProcessState.Sys().(syscall.WaitStatus)
return waitStatus.ExitStatus(), cmdOutput.String(), nil
}
func waitForContainerToExit(dir string, containerPid int, signals chan os.Signal) (exitCode int) {
for range signals {
for {
var status syscall.WaitStatus
var rusage syscall.Rusage
wpid, err := syscall.Wait4(-1, &status, syscall.WNOHANG, &rusage)
if err != nil || wpid <= 0 {
break // wait for next SIGCHLD
}
if wpid == containerPid {
exitCode = status.ExitStatus()
if status.Signaled() {
exitCode = 128 + int(status.Signal())
}
ioWg.Wait() // wait for full output to be collected
check(ioutil.WriteFile(filepath.Join(dir, "exitcode"), []byte(strconv.Itoa(exitCode)), 0700))
return exitCode
}
}
}
panic("ran out of signals") // cant happen
}
func (p *ProcessReaper) reap() {
for {
p.log.Debug("reap")
var status syscall.WaitStatus
var rusage syscall.Rusage
wpid, err := p.wait4(-1, &status, syscall.WNOHANG, &rusage)
if wpid == 0 || (wpid == -1 && err.Error() == "no child processes") {
break
}
if err != nil {
p.log.Error("reaper-wait-error", err, lager.Data{"wpid": wpid})
break
}
p.log.Info("reaped", lager.Data{"pid": wpid, "status": status, "rusage": rusage})
if ch, ok := p.waitChan(wpid); p.monitoredPids[wpid] && ok {
ch <- status.ExitStatus()
p.unmonitorPid(wpid)
p.log.Info("wait-once-sent-exit-status", lager.Data{"pid": wpid, "status": status, "rusage": rusage})
} else {
p.log.Info("wait-once-not-found", lager.Data{"pid": wpid, "status": status, "rusage": rusage})
}
}
}
// Called on running checks, to determine if they have finished
// running.
//
// If the Check has not finished executing, returns false.
//
// If the Check has been running for longer than its Timeout,
// a SIGTERM (and failing that a SIGKILL) is issued to forcibly
// terminate the rogue Check process. In either case, this returns
// as if the check has not yet finished, and Reap() will need to be
// called again to fully reap the Check
//
// If the Check has finished execution (on its own, or via forced
// termination), it will return true.
//
// Once complete, some additional meta-stats for the check execution
// are appended to the check output, to be submit up to bolo
func (self *Check) Reap() bool {
pid := self.process.Process.Pid
var ws syscall.WaitStatus
status, err := syscall.Wait4(pid, &ws, syscall.WNOHANG, nil)
if err != nil {
log.Error("Error waiting on check %s[%d]: %s", self.Name, pid, err.Error())
return false
}
if status == 0 {
// self to see if we need to sigkill due to failed sigterm
if time.Now().After(self.started_at.Add(time.Duration(self.Timeout+2) * time.Second)) {
log.Warn("Check %s[%d] has been running too long, sending SIGKILL", self.Name, pid)
if err := syscall.Kill(pid, syscall.SIGKILL); err != nil {
log.Error("Error sending SIGKILL to check %s[%d]: %s", self.Name, pid, err.Error())
}
self.sig_kill = true
}
// self to see if we need to sigterm due to self timeout expiry
if !self.sig_kill && time.Now().After(self.started_at.Add(time.Duration(self.Timeout)*time.Second)) {
log.Warn("Check %s[%d] has been running too long, sending SIGTERM", self.Name, pid)
if err := syscall.Kill(pid, syscall.SIGTERM); err != nil {
log.Error("Error sending SIGTERM to check %s[%d]: %s", self.Name, pid, err.Error())
}
self.sig_term = true
}
return false
}
self.ended_at = time.Now()
self.running = false
self.duration = time.Since(self.started_at)
self.latency = self.started_at.Sub(self.next_run)
self.output = string(self.stdout.Bytes())
self.err_msg = string(self.stderr.Bytes())
if ws.Exited() {
self.rc = ws.ExitStatus()
} else {
log.Debug("Check %s[%d] exited abnormally (signaled/stopped). Setting rc to UNKNOWN", self.Name, pid)
self.rc = UNKNOWN
}
if self.rc > UNKNOWN {
log.Debug("Check %s[%d] returned with an invalid exit code. Setting rc to UNKOWN", self.Name, pid)
self.rc = UNKNOWN
}
self.reschedule()
if self.ended_at.After(self.next_run) {
timeout_triggered := "not reached"
if self.sig_term || self.sig_kill {
timeout_triggered = "reached"
}
log.Warn("Check %s[%d] took %0.3f seconds to run, at interval %d (timeout of %d was %s)",
self.Name, pid, self.duration.Seconds(), self.Every, self.Timeout, timeout_triggered)
}
return true
}
func GetCommandExitCode(err error) int {
var waitStatus syscall.WaitStatus
if exitError, ok := err.(*exec.ExitError); ok {
waitStatus = exitError.Sys().(syscall.WaitStatus)
return waitStatus.ExitStatus()
}
return 0
}
func (proc *Proc) Start() (safeExit bool, err error) {
log.Printf("supervisor running command: %s\n", proc.command)
commandParts := strings.Fields(proc.command)
commandString := commandParts[0]
commandArgs := commandParts[1:len(commandParts)]
proc.cmd = exec.Command(commandString, commandArgs...)
proc.cmd.Stdout = os.Stdout
proc.cmd.Stderr = os.Stderr
proc.AddSignalHandlers()
cmdErr := proc.cmd.Start()
if cmdErr != nil {
log.Fatal(cmdErr)
}
done := make(chan error, 1)
go func() {
done <- proc.cmd.Wait()
}()
//process waits here
exitCode := <-done
if exitCode != nil {
// Type Assertion of exitCode with exec.ExitError struct
var waitStatus syscall.WaitStatus
exitError, ok := exitCode.(*exec.ExitError)
if ok {
// exitError.Sys() returns system specific exit info
// Type Assertion of exitError.Sys() to sysCall.Waitstatus for Unix
waitStatus = exitError.Sys().(syscall.WaitStatus)
exitStatus := waitStatus.ExitStatus()
if exitStatus == 130 {
log.Printf("Process killed manually, aborting restart \n")
return true, nil
} else {
proc.exitCode = exitStatus
proc.procError = fmt.Sprintf("%v", exitCode)
log.Printf("%v", proc.procError)
if proc.restartCount < proc.maxRestartCount {
log.Printf("Restarting app, Restart count %d, Max restart count %d", proc.restartCount, proc.maxRestartCount)
proc.restartCount += 1
proc.Start()
} else {
log.Printf("Max restart count (%d) reached, exiting", proc.maxRestartCount)
log.Printf("--------- Command exited ----------- \n")
}
}
}
} else {
// command exited successfully with return code = 0
proc.exitCode = 0
proc.restartCount += 1
proc.Start()
}
return true, nil
}
func (self *server) Execute(req *pb.ExecutionRequest, resp pb.Builder_ExecuteServer) error {
if len(req.Args) == 0 {
return fmt.Errorf("Request has no command to execute.")
}
var args []string
if len(req.Args) > 1 {
args = req.Args[1:]
}
if req.BuildEnv == nil {
return fmt.Errorf("No build environment present")
} else if err := sig.VerifyEnv(req.BuildEnv); err != nil {
return fmt.Errorf("Failure verifying build environment: %s", err)
}
cmd := exec.Command(req.Args[0], args...)
cmd.Env = convertEnv(req.GetEnv())
cmd.Stdin = bytes.NewReader(req.Stdin)
cmd.Dir = req.BuildEnv.Path
glog.V(1).Infof("Commands to execute %v (build dir: %s)", req, cmd.Dir)
stdoutPipe, err := cmd.StdoutPipe()
if err != nil {
return err
}
stderrPipe, err := cmd.StderrPipe()
if err != nil {
return err
}
if err = cmd.Start(); err != nil {
return err
}
streamReader(stdoutPipe, stderrPipe, resp)
err = cmd.Wait()
var status syscall.WaitStatus
if err != nil {
if _, ok := err.(*exec.ExitError); ok {
status = err.(*exec.ExitError).Sys().(syscall.WaitStatus)
} else {
return err
}
} else if cmd.ProcessState != nil {
status = cmd.ProcessState.Sys().(syscall.WaitStatus)
}
s := &pb.Status{
CoreDump: status.CoreDump(),
Exited: status.Exited(),
ExitStatus: int32(status.ExitStatus()),
Signaled: status.Signaled(),
Signal: int32(status.Signal()),
}
resp.Send(&pb.ExecutionResponse{Status: s})
return nil
}
// ExitCode returns the exit code of the command denoted by this struct
func (pr *ProcessResult) ExitCode() int {
var waitStatus syscall.WaitStatus
if exitError, ok := pr.ProcessError.(*exec.ExitError); ok {
waitStatus = exitError.Sys().(syscall.WaitStatus)
} else {
waitStatus = pr.ProcessState.Sys().(syscall.WaitStatus)
}
return waitStatus.ExitStatus()
}
func NewExternalCmdExit(name string, ws syscall.WaitStatus, pid int) error {
if ws.Exited() && ws.ExitStatus() == 0 {
return nil
}
if !ws.Stopped() {
pid = 0
}
return ExternalCmdExit{ws, name, pid}
}
func (d *daemonState) handleChildExit(pid int, wstatus syscall.WaitStatus) {
d.Debug("Child process pid=%d exited from daemon with status %d", pid, wstatus.ExitStatus())
for _, sbox := range d.sandboxes {
if sbox.init.Process.Pid == pid {
sbox.remove(d.log)
return
}
}
d.Notice("No sandbox found with oz-init pid = %d", pid)
}
/* output diff */
func checkStringsEqual(expected, actual string) (ok bool, diff string, err error) {
if expected == actual {
ok = true
return
}
var exp *os.File
exp, err = ioutil.TempFile("", "expected")
if err != nil {
return
}
defer exp.Close()
defer os.Remove(exp.Name())
_, err = exp.Write([]byte(expected))
if err != nil {
return
}
exp.Sync()
var act *os.File
act, err = ioutil.TempFile("", "actual")
if err != nil {
return
}
defer act.Close()
defer os.Remove(act.Name())
_, err = act.Write([]byte(actual))
if err != nil {
return
}
act.Sync()
// diff's exit status is 1 if the files differ, and Go returns an error
// when the exit status is non-zero
cmd := exec.Command("diff", "-u", exp.Name(), act.Name())
var cmdOutput []byte
cmdOutput, err = cmd.Output()
if err != nil {
var typeOk bool
var exitErr *exec.ExitError
exitErr, typeOk = err.(*exec.ExitError)
if !typeOk {
return
}
var status syscall.WaitStatus
status, typeOk = exitErr.Sys().(syscall.WaitStatus)
if !typeOk || status.ExitStatus() > 1 {
return
}
err = nil
}
diff = string(cmdOutput)
return
}
func run() int {
flag.Parse()
runtime := flag.Args()[1] // e.g. runc
dir := flag.Args()[2] // bundlePath for run, processPath for exec
containerId := flag.Args()[3]
signals := make(chan os.Signal, 100)
signal.Notify(signals, syscall.SIGCHLD)
fd3 := os.NewFile(3, "/proc/self/fd/3")
logFile := fmt.Sprintf("/proc/%d/fd/4", os.Getpid())
logFD := os.NewFile(4, "/proc/self/fd/4")
syncPipe := os.NewFile(5, "/proc/self/fd/5")
pidFilePath := filepath.Join(dir, "pidfile")
stdin, stdout, stderr, winsz := openPipes(dir)
syncPipe.Write([]byte{0})
var runcStartCmd *exec.Cmd
if *tty {
ttySlave := setupTty(stdin, stdout, pidFilePath, winsz, garden.WindowSize{Rows: *rows, Columns: *cols})
runcStartCmd = exec.Command(runtime, "-debug", "-log", logFile, "exec", "-d", "-tty", "-console", ttySlave.Name(), "-p", fmt.Sprintf("/proc/%d/fd/0", os.Getpid()), "-pid-file", pidFilePath, containerId)
} else {
runcStartCmd = exec.Command(runtime, "-debug", "-log", logFile, "exec", "-p", fmt.Sprintf("/proc/%d/fd/0", os.Getpid()), "-d", "-pid-file", pidFilePath, containerId)
runcStartCmd.Stdin = stdin
runcStartCmd.Stdout = stdout
runcStartCmd.Stderr = stderr
}
// we need to be the subreaper so we can wait on the detached container process
system.SetSubreaper(os.Getpid())
if err := runcStartCmd.Start(); err != nil {
fd3.Write([]byte{2})
return 2
}
var status syscall.WaitStatus
var rusage syscall.Rusage
_, err := syscall.Wait4(runcStartCmd.Process.Pid, &status, 0, &rusage)
check(err) // Start succeeded but Wait4 failed, this can only be a programmer error
logFD.Close() // No more logs from runc so close fd
fd3.Write([]byte{byte(status.ExitStatus())})
if status.ExitStatus() != 0 {
return 3 // nothing to wait for, container didn't launch
}
containerPid, err := parsePid(pidFilePath)
check(err)
return waitForContainerToExit(dir, containerPid, signals)
}
func ParseFile(file string) (*Program, error) {
var status syscall.WaitStatus
var exitCode int
var err error
acornPath := GetAcornPath()
cmd := exec.Command(acornPath, "--ecma6", "--module", file)
stdoutBuffer := &bytes.Buffer{}
stderrBuffer := &bytes.Buffer{}
cmd.Stdout = stdoutBuffer
cmd.Stderr = stderrBuffer
err = cmd.Run()
if err != nil {
exitError, _ := err.(*exec.ExitError)
status = exitError.Sys().(syscall.WaitStatus)
exitCode = status.ExitStatus()
} else {
exitCode = -1
}
stdoutBytes, err := ioutil.ReadAll(stdoutBuffer)
if err != nil {
log.Fatal(err)
}
stderrBytes, err := ioutil.ReadAll(stderrBuffer)
if err != nil {
log.Fatal(err)
}
if exitCode > -1 {
if len(stdoutBytes) > 0 {
fmt.Println(string(stdoutBytes))
}
if len(stderrBytes) > 0 {
fmt.Println(string(stderrBytes))
}
return nil, fmt.Errorf("Exited with code: %d; %s", exitCode, string(stderrBytes))
}
json, err := simplejson.NewJson(stdoutBytes)
if err != nil {
return nil, err
}
return ParseProgram(json)
}
func Wait(pid int) (int, error) {
var wstat syscall.WaitStatus
_, err := syscall.Wait4(pid, &wstat, 0, nil)
if err != nil {
if err.Error() != "no child processes" {
log.Printf("[ERROR] [process] [%d] Wait >>> %s\n", pid, err)
return -1, err
}
log.Printf("[DEBUG] [process] [%d] Wait >>> %s\n", pid, err)
return -1, nil
}
status := wstat.ExitStatus()
return status, nil
}
func (p *process) Wait() (uint32, error) {
if p.status != execution.Stopped {
var wstatus syscall.WaitStatus
_, err := syscall.Wait4(p.pid, &wstatus, 0, nil)
if err != nil {
// This process doesn't belong to us
p.exitCode = execution.UnknownStatusCode
return p.exitCode, nil
}
// TODO: implement kill-all if we are the init pid?
p.status = execution.Stopped
p.exitCode = uint32(wstatus.ExitStatus())
}
return p.exitCode, nil
}
func (instance *Execution) runCommand(cmd *exec.Cmd) (values.ExitCode, error) {
var waitStatus syscall.WaitStatus
if err := cmd.Run(); err != nil {
if exitError, ok := err.(*exec.ExitError); ok {
waitStatus = exitError.Sys().(syscall.WaitStatus)
exitSignal := waitStatus.Signal()
if exitSignal > 0 {
return values.ExitCode(int(exitSignal) + 128), nil
}
return values.ExitCode(waitStatus.ExitStatus()), nil
}
return values.ExitCode(0), UnrecoverableError{error: err}
}
waitStatus = cmd.ProcessState.Sys().(syscall.WaitStatus)
return values.ExitCode(waitStatus.ExitStatus()), nil
}
func (st *initState) handleChildExit(pid int, wstatus syscall.WaitStatus) {
st.log.Debug("Child process pid=%d exited from init with status %d", pid, wstatus.ExitStatus())
track := st.children[pid].track
if len(st.profile.Watchdog) > 0 {
if track == true {
track = false
} else {
track = !st.getProcessExists(st.profile.Watchdog)
}
}
st.removeChildProcess(pid)
if track == true && st.profile.AutoShutdown == oz.PROFILE_SHUTDOWN_YES {
st.log.Info("Shutting down sandbox after child exit.")
st.shutdown()
}
}
// if we are on minikube or minishift lets try to create the
// hostPath folders with relaxed persmissions
func configureHostPathVolume(c *k8sclient.Client, ns string, hostPath string, sshCommand string) error {
cli := sshCommand
if len(cli) == 0 {
context, isMini, _ := util.GetMiniType()
if isMini {
cli = context
}
}
if len(cli) == 0 {
// lets default to using vagrant if we have a Vagrantfile
if _, err := os.Stat("Vagrantfile"); err == nil {
cli = "vagrant"
}
}
if len(cli) == 0 {
return nil
}
shellCommands := []string{
fmt.Sprintf("sudo mkdir -p %s", hostPath),
fmt.Sprintf("sudo chmod 777 %s", hostPath),
fmt.Sprintf("echo hostPath is setup correctly at: %s", hostPath),
}
util.Infof("About to modify host paths on the VM via the command: %s\n", cli)
for _, shellCmd := range shellCommands {
args := []string{"ssh", fmt.Sprintf("/bin/sh -c '%s'", shellCmd)}
cmd := exec.Command(cli, args...)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
var waitStatus syscall.WaitStatus
if err := cmd.Run(); err != nil {
printErr(err)
if exitError, ok := err.(*exec.ExitError); ok {
waitStatus = exitError.Sys().(syscall.WaitStatus)
printStatus(waitStatus.ExitStatus())
}
return err
} else {
waitStatus = cmd.ProcessState.Sys().(syscall.WaitStatus)
printStatus(waitStatus.ExitStatus())
}
}
return nil
}
func main() {
//path search
flag.Parse()
root := flag.Arg(0)
err3 := filepath.Walk(root, visit)
fmt.Printf("filepath.Walk() returned %v\n", err3)
// Now from anywhere else in your program, you can use this:
log.Print("Hello Logs!")
//cmdRun
var (
cmdOut []byte
err error
)
fmt.Println("Hello, new gopher!")
cmd := "ls"
args := []string{"-l", "-a"}
if cmdOut, err = exec.Command(cmd, args...).Output(); err != nil {
fmt.Println(err)
fmt.Println("Ha habido algun error")
os.Exit(1)
}
fmt.Println(string(cmdOut))
//# fini,_ := ini.Load("/tmp/example.ini")
//#fmt.Println( ini.GetString("Wine","Grape" ) )
cmd2 := exec.Command("ls", "/tmp")
var waitStatus syscall.WaitStatus
if err := cmd2.Run(); err != nil {
printError(err)
// Did the command fail because of an unsuccessful exit code
if exitError, ok := err.(*exec.ExitError); ok {
waitStatus = exitError.Sys().(syscall.WaitStatus)
printOutput([]byte(fmt.Sprintf("%d", waitStatus.ExitStatus())))
}
} else {
// Command was successful
waitStatus = cmd2.ProcessState.Sys().(syscall.WaitStatus)
printOutput([]byte(fmt.Sprintf("%d", waitStatus.ExitStatus())))
}
}