TestMu Conference is Back! Future of Testing + AI LambdaTest G2 Announcement

How to use ctor method of qemu Package

Best Syzkaller code snippet using qemu.ctor

qemu.go

Source:qemu.go

...20const (21	hostAddr = "10.0.2.10"22)23func init() {24	vmimpl.Register("qemu", ctor)25}26type Config struct {27	Count     int    // number of VMs to use28	Qemu      string // qemu binary name (qemu-system-arch by default)29	Qemu_Args string // additional command line arguments for qemu binary30	Kernel    string // kernel for injected boot (e.g. arch/x86/boot/bzImage)31	Cmdline   string // kernel command line (can only be specified with kernel)32	Initrd    string // linux initial ramdisk. (optional)33	Cpu       int    // number of VM CPUs34	Mem       int    // amount of VM memory in MBs35}36type Pool struct {37	env *vmimpl.Env38	cfg *Config39}40type instance struct {41	cfg     *Config42	image   string43	debug   bool44	workdir string45	sshkey  string46	sshuser string47	port    int48	rpipe   io.ReadCloser49	wpipe   io.WriteCloser50	qemu    *exec.Cmd51	waiterC chan error52	merger  *vmimpl.OutputMerger53}54type archConfig struct {55	Qemu     string56	QemuArgs string57}58var archConfigs = map[string]archConfig{59	"linux/amd64": {60		Qemu:     "qemu-system-x86_64",61		QemuArgs: "-enable-kvm -usb -usbdevice mouse -usbdevice tablet -soundhw all",62	},63	"linux/386": {64		Qemu: "qemu-system-i386",65	},66	"linux/arm64": {67		Qemu:     "qemu-system-aarch64",68		QemuArgs: "-machine virt -cpu cortex-a57",69	},70	"linux/arm": {71		Qemu: "qemu-system-arm",72	},73	"linux/ppc64le": {74		Qemu: "qemu-system-ppc64",75	},76	"fuchsia/amd64": {77		Qemu:     "qemu-system-x86_64",78		QemuArgs: "-enable-kvm",79	},80}81func ctor(env *vmimpl.Env) (vmimpl.Pool, error) {82	archConfig := archConfigs[env.OS+"/"+env.Arch]83	cfg := &Config{84		Count:     1,85		Qemu:      archConfig.Qemu,86		Qemu_Args: archConfig.QemuArgs,87	}88	if err := config.LoadData(env.Config, cfg); err != nil {89		return nil, fmt.Errorf("failed to parse qemu vm config: %v", err)90	}91	if cfg.Count < 1 || cfg.Count > 1000 {92		return nil, fmt.Errorf("invalid config param count: %v, want [1, 1000]", cfg.Count)93	}94	if env.Debug {95		cfg.Count = 196	}97	if _, err := exec.LookPath(cfg.Qemu); err != nil {98		return nil, err99	}100	if env.Image == "9p" {101		if env.OS != "linux" {102			return nil, fmt.Errorf("9p image is supported for linux only")103		}104		if cfg.Kernel == "" {105			return nil, fmt.Errorf("9p image requires kernel")106		}107	} else {108		if !osutil.IsExist(env.Image) {109			return nil, fmt.Errorf("image file '%v' does not exist", env.Image)110		}111		if !osutil.IsExist(env.SshKey) {112			return nil, fmt.Errorf("ssh key '%v' does not exist", env.SshKey)113		}114	}115	if cfg.Cpu <= 0 || cfg.Cpu > 1024 {116		return nil, fmt.Errorf("bad qemu cpu: %v, want [1-1024]", cfg.Cpu)117	}118	if cfg.Mem < 128 || cfg.Mem > 1048576 {119		return nil, fmt.Errorf("bad qemu mem: %v, want [128-1048576]", cfg.Mem)120	}121	cfg.Kernel = osutil.Abs(cfg.Kernel)122	cfg.Initrd = osutil.Abs(cfg.Initrd)123	pool := &Pool{124		cfg: cfg,125		env: env,126	}127	return pool, nil128}129func (pool *Pool) Count() int {130	return pool.cfg.Count131}132func (pool *Pool) Create(workdir string, index int) (vmimpl.Instance, error) {133	sshkey := pool.env.SshKey134	sshuser := pool.env.SshUser135	if pool.env.Image == "9p" {136		sshkey = filepath.Join(workdir, "key")137		sshuser = "root"138		keygen := exec.Command("ssh-keygen", "-t", "rsa", "-b", "2048", "-N", "", "-C", "", "-f", sshkey)139		if out, err := keygen.CombinedOutput(); err != nil {140			return nil, fmt.Errorf("failed to execute ssh-keygen: %v\n%s", err, out)141		}142		initFile := filepath.Join(workdir, "init.sh")143		if err := osutil.WriteExecFile(initFile, []byte(strings.Replace(initScript, "{{KEY}}", sshkey, -1))); err != nil {144			return nil, fmt.Errorf("failed to create init file: %v", err)145		}146	}147	for i := 0; ; i++ {148		inst, err := pool.ctor(workdir, sshkey, sshuser, index)149		if err == nil {150			return inst, nil151		}152		if i < 1000 && strings.Contains(err.Error(), "could not set up host forwarding rule") {153			continue154		}155		return nil, err156	}157}158func (pool *Pool) ctor(workdir, sshkey, sshuser string, index int) (vmimpl.Instance, error) {159	inst := &instance{160		cfg:     pool.cfg,161		image:   pool.env.Image,162		debug:   pool.env.Debug,163		workdir: workdir,164		sshkey:  sshkey,165		sshuser: sshuser,166	}167	closeInst := inst168	defer func() {169		if closeInst != nil {170			closeInst.Close()171		}172	}()...

ctor

Using AI Code Generation

1import (2func main() {3    notificator := notificator.New(notificator.Options{4    })5    notificator.Push("Title", "Message body", "/home/my_photo.png", notificator.UR_CRITICAL)6    fmt.Println("Hello, playground")7}8import (9func main() {10    notificator := notificator.New(notificator.Options{11    })12    notificator.Push("Title", "Message body", "/home/my_photo.png", notificator.UR_CRITICAL)13    fmt.Println("Hello, playground")14}15import (16func main() {17    notificator := notificator.New(notificator.Options{18    })19    notificator.Push("Title", "Message body", "/home/my_photo.png", notificator.UR_CRITICAL)20    fmt.Println("Hello, playground")21}22import (23func main() {24    notificator := notificator.New(notificator.Options{25    })26    notificator.Push("Title", "Message body", "/home/my_photo.png", notificator.UR_CRITICAL)27    fmt.Println("Hello, playground")28}29import (30func main() {31    notificator := notificator.New(notificator.Options{

ctor

Using AI Code Generation

1import (2func main() {3	conn, err := qmp.NewSocketConnection("/tmp/qmp-sock")4	if err != nil {5		panic(err)6	}7	if err := conn.Connect(); err != nil {8		panic(err)9	}10	response, err := conn.ExecuteQMPCapabilities()11	if err != nil {12		panic(err)13	}14	fmt.Println(response.Return)15	if err := conn.Disconnect(); err != nil {16		panic(err)17	}18}19import (20func main() {21	conn, err := qmp.NewSocketConnection("/tmp/qmp-sock")22	if err != nil {23		panic(err)24	}25	if err := conn.Connect(); err != nil {26		panic(err)27	}28	response, err := conn.ExecuteQMPCapabilities()29	if err != nil {30		panic(err)31	}32	fmt.Println(response.Return)33	response, err = conn.ExecuteHumanMonitorCommand("info cpus")34	if err != nil {35		panic(err)36	}37	fmt.Println(response.Return)38	if err := conn.Disconnect(); err != nil {39		panic(err)40	}41}42import (43func main() {44	conn, err := qmp.NewSocketConnection("/tmp/qmp-sock")45	if err != nil {46		panic(err)47	}48	if err := conn.Connect(); err != nil {49		panic(err)50	}

ctor

Using AI Code Generation

1import (2func main() {3	qemu := NewQemu()4	fmt.Println(qemu)5}6import (7func main() {8	qemu := NewQemu()9	fmt.Println(qemu)10}11import (12func main() {13	qemu := NewQemu()14	fmt.Println(qemu)15}16import (17func main() {18	qemu := NewQemu()19	fmt.Println(qemu)20}21import (22func main() {23	qemu := NewQemu()24	fmt.Println(qemu)25}26import (27func main() {28	qemu := NewQemu()29	fmt.Println(qemu)30}31import (32func main() {33	qemu := NewQemu()34	fmt.Println(qemu)35}36import (37func main() {38	qemu := NewQemu()39	fmt.Println(qemu)40}41import (42func main() {43	qemu := NewQemu()44	fmt.Println(qemu)45}46import (47func main() {48	qemu := NewQemu()49	fmt.Println(qemu)50}51import (52func main() {53	qemu := NewQemu()54	fmt.Println(qemu)55}56import (57func main() {58	qemu := NewQemu()59	fmt.Println(qemu)

ctor

Using AI Code Generation

1import (2func main() {3    fmt.Println("In main")4    q := qemu.NewQemu()5    q.Start()6}7import (8type Qemu struct {9}10func NewQemu() *Qemu {11    return &Qemu{Name: "qemu"}12}13func (q *Qemu) Start() {14    fmt.Println("Starting qemu")15}16import (17func TestQemu(t *testing.T) {18    q := NewQemu()19    if q.Name != "qemu" {20        t.Fatalf("qemu.Name not set properly")21    }22}

ctor

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello, playground")4    q := qemu.NewQemu()5    q.Start()6    q.Stop()7}8import (9type Qemu struct {10}11func NewQemu() *Qemu {12    return &Qemu{Name: "Qemu"}13}14func (q *Qemu) Start() {15    fmt.Println("Starting Qemu")16}17func (q *Qemu) Stop() {18    fmt.Println("Stopping Qemu")19}

ctor

Using AI Code Generation

1import (2func main() {3	q := qemu.NewQemu("qemu-img", "create", "-f", "qcow2", "test.img", "10G")4	q.Run()5	fmt.Println("done")6}7import (8type Qemu struct {9}10func NewQemu(args ...string) *Qemu {11	return &Qemu{exec.Command(args[0], args[1:]...)}12}13func (q *Qemu) Run() error {14	return q.cmd.Run()15}

ctor

Using AI Code Generation

1import (2func main() {3	var (4		qemuPath = flag.String("qemu", "qemu-system-i386", "path to the qemu executable")5	flag.Parse()6	q, err := qemu.New(*qemuPath)7	if err != nil {8		panic(err)9	}10	machine, err := q.NewMachine()11	if err != nil {12		panic(err)13	}14	hda, err := machine.NewDrive("hda", "disk.img")15	if err != nil {16		panic(err)17	}18	fda, err := machine.NewDrive("fda", "floppy.img")19	if err != nil {20		panic(err)21	}22	cdrom, err := machine.NewDrive("cdrom", "cdrom.iso")23	if err != nil {24		panic(err)25	}26	_, err = machine.NewNIC("e1000")27	if err != nil {28		panic(err)29	}30	_, err = machine.NewSerialPort("stdio")31	if err != nil {32		panic(err)33	}34	err = machine.Start()35	if err != nil {36		panic(err)37	}38	exitStatus, err := machine.Wait()39	if err != nil {40		panic(err)41	}42	err = machine.Close()43	if err != nil {44		panic(err)45	}46	fmt.Printf("exited with status %d47}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.