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|
//go:build testtool
package main
import (
"errors"
"log"
"net"
"os"
"path"
"slices"
"strings"
"syscall"
"hakurei.app/container/fhs"
"hakurei.app/container/vfs"
)
func main() {
log.SetFlags(0)
log.SetPrefix("testtool: ")
var hostNet bool
wantArgs := []string{"testtool"}
if len(os.Args) == 2 {
hostNet = true
wantArgs = []string{"testtool", "net"}
}
if !slices.Equal(os.Args, wantArgs) {
log.Fatalf("Args: %q, want %q", os.Args, wantArgs)
}
var overlayRoot bool
wantEnv := []string{"HAKUREI_TEST=1"}
if len(os.Environ()) == 2 {
overlayRoot = true
wantEnv = []string{"HAKUREI_TEST=1", "HAKUREI_ROOT=1"}
}
if !slices.Equal(wantEnv, os.Environ()) {
log.Fatalf("Environ: %q, want %q", os.Environ(), wantEnv)
}
var overlayTmp, overlayWork bool
const (
wantExec = "/opt/bin/testtool"
wantExecTmp = "/tmp/bin/testtool"
wantExecWork = "/work/bin/testtool"
)
if got, err := os.Executable(); err != nil {
log.Fatalf("Executable: error = %v", err)
} else if got != wantExec {
switch got {
case wantExecTmp:
overlayTmp = true
case wantExecWork:
overlayWork = true
default:
log.Fatalf("Executable: %q, want %q", got, wantExec)
}
}
wantHostname := "cure"
if hostNet {
wantHostname += "-net"
}
if hostname, err := os.Hostname(); err != nil {
log.Fatalf("Hostname: error = %v", err)
} else if hostname != wantHostname {
log.Fatalf("Hostname: %q, want %q", hostname, wantHostname)
}
var m *vfs.MountInfo
if f, err := os.Open(fhs.Proc + "self/mountinfo"); err != nil {
log.Fatalf("Open: error = %v", err)
} else {
err = vfs.NewMountInfoDecoder(f).Decode(&m)
closeErr := f.Close()
if err != nil {
log.Fatalf("Decode: error = %v", err)
}
if closeErr != nil {
log.Fatalf("Close: error = %v", err)
}
}
if _, err := net.Dial("tcp", "127.0.0.1:0"); err == nil {
log.Fatal("Dial unexpectedly succeeded")
} else if hostNet {
if !errors.Is(err, syscall.ECONNREFUSED) {
log.Fatalf("Dial: error = %v", err)
}
} else {
if !errors.Is(err, syscall.ENETUNREACH) {
log.Fatalf("Dial: error = %v", err)
}
}
const checksumEmptyDir = "MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU"
ident := "oHuqV7p0v1Vd8IdAzjyYM8sfCS0P2LR5tfv5cb6Gbf2ZWUm8Ec-7hYPJ_qr183m7"
log.Println(m)
next := func() { m = m.Next; log.Println(m) }
if overlayRoot {
ident = "cIjP14zs5el6W_BQhufL_c0vWg-V6Z6pDpsbEa3sYtZ1381u1bKnH3N16RIrw-1S"
if m.Root != "/" || m.Target != "/" ||
m.Source != "overlay" || m.FsType != "overlay" {
log.Fatal("unexpected root mount entry")
}
var lowerdir string
for _, o := range strings.Split(m.FsOptstr, ",") {
const lowerdirKey = "lowerdir="
if strings.HasPrefix(o, lowerdirKey) {
lowerdir = o[len(lowerdirKey):]
}
}
if path.Base(lowerdir) != checksumEmptyDir {
log.Fatal("unexpected artifact checksum")
}
} else {
if hostNet {
ident = "I3T53NtN6HPAyyodHtq2B0clcsoS1nPdvCEb-Zc5K-hoqFGL2od1mftHhwG7gX1S"
}
if m.Root != "/sysroot" || m.Target != "/" {
log.Fatal("unexpected root mount entry")
}
next()
if path.Base(m.Root) != "OLBgp1GsljhM2TJ-sbHjaiH9txEUvgdDTAzHv2P24donTt6_529l-9Ua0vFImLlb" {
log.Fatal("unexpected file artifact checksum")
}
next()
if path.Base(m.Root) != checksumEmptyDir {
log.Fatal("unexpected artifact checksum")
}
}
if !overlayTmp {
next() // testtool artifact
} else {
ident = "3ELJ8l42g6XeIoLGR9LheVhMIwSIleD6VrhsliBuon5DAdBOwFSMqd7aiUI4fll7"
next()
if path.Base(m.Root) != checksumEmptyDir || m.Target != "/tmp" {
log.Fatal("unexpected artifact checksum")
}
}
if overlayTmp {
next() // testtool artifact
if m.Root != "/" || m.Target != "/tmp" ||
m.Source != "overlay" || m.FsType != "overlay" {
log.Fatal("unexpected temp mount entry")
}
}
next()
if overlayWork {
ident = "VMCurZKCA_MV80zb-ZBWVytfl3rhYOKJeo2u9l-OuaytQ_w_r4EsqgJ2nfO93x5_"
if m.Root != "/" || m.Target != "/work" ||
m.Source != "overlay" || m.FsType != "overlay" {
log.Fatal("unexpected work mount entry")
}
} else {
if path.Base(m.Root) != ident || m.Target != "/work" {
log.Fatal("unexpected work mount entry")
}
}
if !overlayTmp {
next()
if path.Base(m.Root) != ident || m.Target != "/tmp" {
log.Fatal("unexpected temp mount entry")
}
}
next()
if m.Root != "/" || m.Target != "/proc" || m.Source != "proc" || m.FsType != "proc" {
log.Fatal("unexpected proc mount entry")
}
next()
if m.Root != "/" || m.Target != "/dev" || m.Source != "devtmpfs" || m.FsType != "tmpfs" {
log.Fatal("unexpected dev mount entry")
}
for i := 0; i < 9; i++ { // private /dev entries
next()
}
if m.Next != nil {
log.Println("unexpected extra mount entries")
for m.Next != nil {
next()
}
os.Exit(1)
}
checkData := []byte{0}
if hostNet {
checkData = []byte("net")
}
if err := os.WriteFile("check", checkData, 0400); err != nil {
log.Fatal(err)
}
}
|
