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How to use MakeEnv method of ipc Package

Best Syzkaller code snippet using ipc.MakeEnv

runner.go

Source:runner.go

...89// Run is responsible for requesting new programs from the verifier, executing them and then sending back the Result.90// TODO: Implement functionality to execute several programs at once and send back a slice of results.91func (rn *Runner) Run(firstProg []byte, taskID int64) {92	p, id := firstProg, taskID93	env, err := ipc.MakeEnv(rn.config, 0)94	if err != nil {95		log.Fatalf("failed to create initial execution environment: %v", err)96	}97	for {98		prog, err := rn.target.Deserialize(p, prog.NonStrict)99		if err != nil {100			log.Fatalf("failed to deserialise new program: %v", err)101		}102		log.Printf("executing program") // watchdog for monitor103		_, info, hanged, err := env.Exec(rn.opts, prog)104		if err != nil {105			log.Fatalf("failed to execute the program: %v", err)106		}107		a := &rpctype.NextExchangeArgs{108			Pool:       rn.pool,109			VM:         rn.vm,110			Hanged:     hanged,111			Info:       *info,112			ExecTaskID: id,113		}114		r := &rpctype.NextExchangeRes{}115		if err := rn.vrf.Call("Verifier.NextExchange", a, r); err != nil {116			log.Fatalf("failed to make exchange with verifier: %v", err)117		}118		p, id = r.Prog, r.ID119		if !rn.newEnv {120			continue121		}122		err = env.Close()123		if err != nil {124			log.Fatalf("failed to close the execution environment: %v", err)125		}126		env, err = ipc.MakeEnv(rn.config, 0)127		if err != nil {128			log.Fatalf("failed to create new execution environmentL %v", err)129		}130	}131}...

ipc_test.go

Source:ipc_test.go

...71			Executor: bin,72			Flags:    configFlags,73			Timeout:  timeout,74		}75		env, err := MakeEnv(cfg, 0)76		if err != nil {77			t.Fatalf("failed to create env: %v", err)78		}79		defer env.Close()80		for i := 0; i < 10; i++ {81			p := target.GenerateSimpleProg()82			opts := &ExecOpts{83				Flags: flag,84			}85			output, info, failed, hanged, err := env.Exec(opts, p)86			if err != nil {87				t.Fatalf("failed to run executor: %v", err)88			}89			if hanged {90				t.Fatalf("program hanged:\n%s", output)91			}92			if failed {93				t.Fatalf("program failed:\n%s", output)94			}95			if len(info) == 0 {96				t.Fatalf("no calls executed:\n%s", output)97			}98			if info[0].Errno != 0 {99				t.Fatalf("simple call failed: %v\n%s", info[0].Errno, output)100			}101			if len(output) != 0 {102				t.Fatalf("output on empty program")103			}104		}105	}106}107func TestParallel(t *testing.T) {108	target, _, _, configFlags := initTest(t)109	bin := buildExecutor(t, target)110	defer os.Remove(bin)111	cfg := &Config{112		Executor: bin,113		Flags:    configFlags,114	}115	const P = 10116	errs := make(chan error, P)117	for p := 0; p < P; p++ {118		go func() {119			env, err := MakeEnv(cfg, 0)120			if err != nil {121				errs <- fmt.Errorf("failed to create env: %v", err)122				return123			}124			defer func() {125				env.Close()126				errs <- err127			}()128			p := target.GenerateSimpleProg()129			opts := &ExecOpts{}130			output, info, failed, hanged, err := env.Exec(opts, p)131			if err != nil {132				err = fmt.Errorf("failed to run executor: %v", err)133				return...

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