50 lines
952 B
Go
50 lines
952 B
Go
|
package instance
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"os"
|
||
|
|
"os/exec"
|
||
|
|
"strings"
|
||
|
|
"syscall"
|
||
|
|
|
||
|
|
"golang.org/x/sys/windows"
|
||
|
|
)
|
||
|
|
|
||
|
|
func Detach() error {
|
||
|
|
if AlreadyRunning() {
|
||
|
|
return fmt.Errorf("agent already running")
|
||
|
|
}
|
||
|
|
exe, err := os.Executable()
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
nul, err := os.OpenFile("NUL", os.O_RDWR, 0)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
defer nul.Close()
|
||
|
|
|
||
|
|
cmd := exec.Command(exe, stripBackground(os.Args[1:])...)
|
||
|
|
cmd.Stdin = nul
|
||
|
|
cmd.Stdout = nul
|
||
|
|
cmd.Stderr = nul
|
||
|
|
cmd.SysProcAttr = &syscall.SysProcAttr{
|
||
|
|
HideWindow: true,
|
||
|
|
CreationFlags: windows.CREATE_NO_WINDOW | windows.CREATE_NEW_PROCESS_GROUP,
|
||
|
|
}
|
||
|
|
return cmd.Start()
|
||
|
|
}
|
||
|
|
|
||
|
|
func stripBackground(args []string) []string {
|
||
|
|
out := make([]string, 0, len(args))
|
||
|
|
for _, arg := range args {
|
||
|
|
name := strings.TrimLeft(arg, "-/")
|
||
|
|
lower := strings.ToLower(name)
|
||
|
|
if lower == "background" || strings.HasPrefix(lower, "background=") {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
out = append(out, arg)
|
||
|
|
}
|
||
|
|
return out
|
||
|
|
}
|