1 // Copyright 2018 syzkaller project authors. All rights reserved. 2 // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file. 3 4 package ipcconfig 5 6 import ( 7 "flag" 8 "fmt" 9 10 "github.com/google/syzkaller/pkg/ipc" 11 "github.com/google/syzkaller/prog" 12 "github.com/google/syzkaller/sys/targets" 13 ) 14 15 var ( 16 flagExecutor = flag.String("executor", "./syz-executor", "path to executor binary") 17 flagThreaded = flag.Bool("threaded", true, "use threaded mode in executor") 18 flagCollide = flag.Bool("collide", true, "collide syscalls to provoke data races") 19 flagSignal = flag.Bool("cover", false, "collect feedback signals (coverage)") 20 flagSandbox = flag.String("sandbox", "none", "sandbox for fuzzing (none/setuid/namespace)") 21 flagDebug = flag.Bool("debug", false, "debug output from executor") 22 flagTimeout = flag.Duration("timeout", 0, "execution timeout") 23 ) 24 25 func Default(target *prog.Target) (*ipc.Config, *ipc.ExecOpts, error) { 26 c := &ipc.Config{ 27 Executor: *flagExecutor, 28 Timeout: *flagTimeout, 29 } 30 if *flagSignal { 31 c.Flags |= ipc.FlagSignal 32 } 33 if *flagDebug { 34 c.Flags |= ipc.FlagDebug 35 } 36 switch *flagSandbox { 37 case "none": 38 case "setuid": 39 c.Flags |= ipc.FlagSandboxSetuid 40 case "namespace": 41 c.Flags |= ipc.FlagSandboxNamespace 42 default: 43 return nil, nil, fmt.Errorf("flag sandbox must contain one of none/setuid/namespace") 44 } 45 46 sysTarget := targets.Get(target.OS, target.Arch) 47 if sysTarget.ExecutorUsesShmem { 48 c.Flags |= ipc.FlagUseShmem 49 } 50 if sysTarget.ExecutorUsesForkServer { 51 c.Flags |= ipc.FlagUseForkServer 52 } 53 54 opts := &ipc.ExecOpts{ 55 Flags: ipc.FlagDedupCover, 56 } 57 if *flagThreaded { 58 opts.Flags |= ipc.FlagThreaded 59 } 60 if *flagCollide { 61 opts.Flags |= ipc.FlagCollide 62 } 63 64 return c, opts, nil 65 } 66
