67 lines
1.1 KiB
Go
67 lines
1.1 KiB
Go
package main
|
|
|
|
import (
|
|
"log"
|
|
"os"
|
|
"os/exec"
|
|
filepath "path/filepath"
|
|
"syscall"
|
|
)
|
|
|
|
func crossBuildStart() {
|
|
err := os.Remove("/bin/sh")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
err = os.Link("/usr/bin/resin-xbuild", "/bin/sh")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func crossBuildEnd() {
|
|
err := os.Remove("/bin/sh")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
err = os.Link("/bin/sh.real", "/bin/sh")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func runShell() error {
|
|
cmd := exec.Command("/usr/bin/qemu-arm-static", append([]string{"-execve", "-0", os.Args[0], "/bin/sh"}, os.Args[1:]...)...)
|
|
cmd.Stdin = os.Stdin
|
|
cmd.Stdout = os.Stdout
|
|
cmd.Stderr = os.Stderr
|
|
return cmd.Run()
|
|
}
|
|
|
|
func main() {
|
|
command := filepath.Base(os.Args[0])
|
|
|
|
switch command {
|
|
case "cross-build-start":
|
|
crossBuildStart()
|
|
case "cross-build-end":
|
|
crossBuildEnd()
|
|
default:
|
|
code := 0
|
|
crossBuildEnd()
|
|
|
|
if err := runShell(); err != nil {
|
|
code = 1
|
|
if exiterr, ok := err.(*exec.ExitError); ok {
|
|
if status, ok := exiterr.Sys().(syscall.WaitStatus); ok {
|
|
code = status.ExitStatus()
|
|
}
|
|
}
|
|
}
|
|
|
|
crossBuildStart()
|
|
|
|
os.Exit(code)
|
|
}
|
|
}
|