func spawnServer(cl libkb.CommandLine) (err error) {
var files []uintptr
var cmd string
var args []string
var devnull, log *os.File
var pid int
defer func() {
if err != nil {
if devnull != nil {
devnull.Close()
}
if log != nil {
log.Close()
}
}
}()
if devnull, err = os.OpenFile("nul", os.O_RDONLY, 0); err != nil {
return
}
files = append(files, devnull.Fd())
if G.Env.GetSplitLogOutput() {
files = append(files, uintptr(1), uintptr(2))
} else {
if _, log, err = libkb.OpenLogFile(); err != nil {
return
}
files = append(files, log.Fd(), log.Fd())
}
// On 'nix this would include Setsid: true, which means
// the new process inherits the session/terminal from the parent.
// This is default on windows and need not be specified.
attr := syscall.ProcAttr{
Env: os.Environ(),
Files: files,
}
cmd, args, err = makeServerCommandLine(cl)
if err != nil {
return err
}
pid, _, err = syscall.StartProcess(cmd, args, &attr)
if err != nil {
err = fmt.Errorf("Error in StartProcess: %s", err)
} else {
G.Log.Info("Starting background server with pid=%d", pid)
}
return err
}
func spawnServer(cl libkb.CommandLine) (err error) {
var files []uintptr
var cmd string
var args []string
var devnull, log *os.File
var pid int
defer func() {
if err != nil {
if devnull != nil {
devnull.Close()
}
if log != nil {
log.Close()
}
}
}()
if devnull, err = os.OpenFile("/dev/null", os.O_RDONLY, 0); err != nil {
return
}
files = append(files, devnull.Fd())
if G.Env.GetSplitLogOutput() {
files = append(files, uintptr(1), uintptr(2))
} else {
if _, log, err = libkb.OpenLogFile(); err != nil {
return
}
files = append(files, log.Fd(), log.Fd())
}
attr := syscall.ProcAttr{
Env: os.Environ(),
Sys: &syscall.SysProcAttr{Setsid: true},
Files: files,
}
cmd, args, err = makeServerCommandLine(cl)
if err != nil {
return err
}
pid, err = syscall.ForkExec(cmd, args, &attr)
if err != nil {
err = fmt.Errorf("Error in ForkExec: %s", err)
} else {
G.Log.Info("Forking background server with pid=%d", pid)
}
return err
}