How to use failf method of prog Package

Best Syzkaller code snippet using prog.failf

syz-redb.go

Source:syz-redb.go

...35	if *flagOS != "" || *flagArch != "" {36		var err error37		target, err = prog.GetTarget(*flagOS, *flagArch)38		if err != nil {39			failf("failed to find target: %v", err)40		}41	}42	tmpCorpusDB := args[0] + ".tmp"43	rbCorpusDB := args[0] + ".rb"44	unpack(args[0], tmpCorpusDB, args[1])45	pack(tmpCorpusDB, rbCorpusDB, target, *flagVersion)46}47func usage() {48	fmt.Fprintf(os.Stderr, "usage:\n")49	fmt.Fprintf(os.Stderr, "  syz-redb corpus.db kernel_funcname\n")50	os.Exit(1)51}52func pack(dir, file string, target *prog.Target, version uint64) {53	files, err := ioutil.ReadDir(dir)54	if err != nil {55		failf("failed to read dir: %v", err)56	}57	os.Remove(file)58	db, err := db.Open(file)59	if err != nil {60		failf("failed to open database file: %v", err)61	}62	if err := db.BumpVersion(version); err != nil {63		failf("failed to bump database version: %v", err)64	}65	for _, file := range files {66		data, err := ioutil.ReadFile(filepath.Join(dir, file.Name()))67		if err != nil {68			failf("failed to read file %v: %v", file.Name(), err)69		}70		var seq uint6471		key := file.Name()72		if parts := strings.Split(file.Name(), "-"); len(parts) == 2 {73			var err error74			if seq, err = strconv.ParseUint(parts[1], 10, 64); err == nil {75				key = parts[0]76			}77		}78		if sig := hash.String(data); key != sig {79			if target != nil {80				p, err := target.Deserialize(data)81				if err != nil {82					failf("failed to deserialize %v: %v", file.Name(), err)83				}84				data = p.Serialize()85				sig = hash.String(data)86			}87			fmt.Fprintf(os.Stderr, "fixing hash %v -> %v\n", key, sig)88			key = sig89		}90		db.Save(key, data, seq)91	}92	if err := db.Flush(); err != nil {93		failf("failed to save database file: %v", err)94	}95}96/* Collect ids of kernel function */97func collectCorpusIds(url string) (ids []string) {98	var allMatchResult []string99        resp, err := http.Get(url)100	for {101		if err != nil {102			fmt.Printf("Meet error while fetching url: %v\n", err)103		}104		defer resp.Body.Close()105		body, err := ioutil.ReadAll(resp.Body)106		if err != nil {107			fmt.Printf("Meet error while reading response: %v\n", err)108		}109		reg := regexp.MustCompile(`<li>(\w+)</li>`)110		match := reg.FindAllStringSubmatch(string(body), -1)111		if len(match) != 0 {112			for _, res := range match {113				fmt.Println("match!")114				allMatchResult = append(allMatchResult, res[1])115			}116			break117		}else {118			fmt.Println("No corpus ids matched this time, trying again...")119			continue120		}121	}122	return allMatchResult123}124func idCheck(id string, ids []string) bool {125	for _, a := range ids {126		if id == a {127			fmt.Fprintf(os.Stderr,"%s\n", id)128			return true129		}130	}131	return false132}133func unpack(file, dir string, funcName string) {134	/* Replace to your url */135	url := "http://10.1.1.110:56741/cover?funcName="+funcName136	ids := collectCorpusIds(url)137	fmt.Printf("%v ids be matched.\n", len(ids))138	db, err := db.Open(file)139	if err != nil {140		failf("failed to open database: %v", err)141	}142	osutil.MkdirAll(dir)143	for key, rec := range db.Records {144		if idCheck(key, ids) != true {145			continue146		}147		fname := filepath.Join(dir, key)148		if rec.Seq != 0 {149			fname += fmt.Sprintf("-%v", rec.Seq)150		}151		if err := osutil.WriteFile(fname, rec.Val); err != nil {152			failf("failed to output file: %v", err)153		}154	}155}156func failf(msg string, args ...interface{}) {157	fmt.Fprintf(os.Stderr, msg+"\n", args...)158	os.Exit(1)159}...

syz-db.go

Source:syz-db.go

...33			usage()34		}35		target, err := prog.GetTarget(*flagOS, *flagArch)36		if err != nil {37			failf("failed to find target: %v", err)38		}39		bench(target, args[1])40		return41	}42	if len(args) != 3 {43		usage()44	}45	var target *prog.Target46	if *flagOS != "" || *flagArch != "" {47		var err error48		target, err = prog.GetTarget(*flagOS, *flagArch)49		if err != nil {50			failf("failed to find target: %v", err)51		}52	}53	switch args[0] {54	case "pack":55		pack(args[1], args[2], target, *flagVersion)56	case "unpack":57		unpack(args[1], args[2])58	default:59		usage()60	}61}62func usage() {63	fmt.Fprintf(os.Stderr, "usage:\n")64	fmt.Fprintf(os.Stderr, "  syz-db pack dir corpus.db\n")65	fmt.Fprintf(os.Stderr, "  syz-db unpack corpus.db dir\n")66	fmt.Fprintf(os.Stderr, "  syz-db bench corpus.db\n")67	os.Exit(1)68}69func pack(dir, file string, target *prog.Target, version uint64) {70	files, err := ioutil.ReadDir(dir)71	if err != nil {72		failf("failed to read dir: %v", err)73	}74	var records []db.Record75	for _, file := range files {76		data, err := ioutil.ReadFile(filepath.Join(dir, file.Name()))77		if err != nil {78			failf("failed to read file %v: %v", file.Name(), err)79		}80		var seq uint6481		key := file.Name()82		if parts := strings.Split(file.Name(), "-"); len(parts) == 2 {83			var err error84			if seq, err = strconv.ParseUint(parts[1], 10, 64); err == nil {85				key = parts[0]86			}87		}88		if sig := hash.String(data); key != sig {89			if target != nil {90				p, err := target.Deserialize(data, prog.NonStrict)91				if err != nil {92					failf("failed to deserialize %v: %v", file.Name(), err)93				}94				data = p.Serialize()95				sig = hash.String(data)96			}97			fmt.Fprintf(os.Stderr, "fixing hash %v -> %v\n", key, sig)98			key = sig99		}100		records = append(records, db.Record{101			Val: data,102			Seq: seq,103		})104	}105	if err := db.Create(file, version, records); err != nil {106		failf("%v", err)107	}108}109func unpack(file, dir string) {110	db, err := db.Open(file)111	if err != nil {112		failf("failed to open database: %v", err)113	}114	osutil.MkdirAll(dir)115	for key, rec := range db.Records {116		fname := filepath.Join(dir, key)117		if rec.Seq != 0 {118			fname += fmt.Sprintf("-%v", rec.Seq)119		}120		if err := osutil.WriteFile(fname, rec.Val); err != nil {121			failf("failed to output file: %v", err)122		}123	}124}125func bench(target *prog.Target, file string) {126	start := time.Now()127	db, err := db.Open(file)128	if err != nil {129		failf("failed to open database: %v", err)130	}131	var corpus []*prog.Prog132	for _, rec := range db.Records {133		p, err := target.Deserialize(rec.Val, prog.NonStrict)134		if err != nil {135			failf("failed to deserialize: %v\n%s", err, rec.Val)136		}137		corpus = append(corpus, p)138	}139	runtime.GC()140	var stats runtime.MemStats141	runtime.ReadMemStats(&stats)142	fmt.Printf("allocs %v MB (%v M), next GC %v MB, sys heap %v MB, live allocs %v MB (%v M), time %v\n",143		stats.TotalAlloc>>20,144		stats.Mallocs>>20,145		stats.NextGC>>20,146		stats.HeapSys>>20,147		stats.Alloc>>20,148		(stats.Mallocs-stats.Frees)>>20,149		time.Since(start))150	sink = corpus151	_ = sink152}153var sink interface{}154func failf(msg string, args ...interface{}) {155	fmt.Fprintf(os.Stderr, msg+"\n", args...)156	os.Exit(1)157}

failf

Using AI Code Generation

1import (2type Prog struct {3}4func (p *Prog) failf(format string, args ...interface{}) {5	fmt.Fprintf(os.Stderr, format, args...)6	os.Exit(1)7}8func main() {9	p := &Prog{name: "test"}10	p.failf("Error: %s", "test")11}

failf

Using AI Code Generation

1import (2func main() {3	fmt.Println("Hello World")4	_, err := os.Open("no-file.txt")5	if err != nil {6		fmt.Println("err happened", err)7	}8}9import (10func main() {11	fmt.Println("Hello World")12	_, err := os.Open("no-file.txt")13	if err != nil {14		fmt.Println("err happened", err)15	}16}

failf

Using AI Code Generation

1import (2type Prog struct {3}4func (p *Prog) failf(format string, args ...interface{}) {5	fmt.Fprintf(os.Stderr, format+"\n", args...)6	os.Exit(2)7}8func main() {9	p := &Prog{}10	p.failf("failed")11}

failf

Using AI Code Generation

1import (2type prog struct {3}4func (p prog) failf(format string, args ...interface{}) {5	fmt.Printf(format, args...)6}7func main() {8	p := prog{"Gopher", 5}9	p.failf("can't %s today", "work")10}11import (12type prog struct {13}14func (p *prog) failf(format string, args ...interface{}) {15	fmt.Printf(format, args...)16}17func main() {18	p := prog{"Gopher", 5}19	p.failf("can't %s today", "work")20}21import (22type prog struct {23}24func (p prog) failf(format string, args ...interface{}) {25	fmt.Printf(format, args...)26}27func main() {28	p := prog{"Gopher", 5}29	p1.failf("can't %s today", "work")30}31import (32type prog struct {33}34func (p *prog) failf(format string, args ...interface{}) {35	fmt.Printf(format, args...)36}37func main() {38	p := prog{"Gopher", 5}39	p1.failf("can't %s today", "work")40}41import (42type prog struct {43}44func (p prog

failf

Using AI Code Generation

1import (2type Prog struct {3}4func (p *Prog) failf() {5	fmt.Println("Fail")6}7func main() {8	p := Prog{"Go", 2016}9	p.failf()10}11import (12type Prog struct {13}14func (p *Prog) failf() {15	fmt.Println("Fail")16}17func main() {18	p := Prog{"Go", 2016}19	p.failf()20}21import (22type Prog struct {23}24func (p *Prog) failf() {25	fmt.Println("Fail")26}27func main() {28	p := Prog{"Go", 2016}29	p.failf()30}31import (32type Prog struct {33}34func (p *Prog) failf() {35	fmt.Println("Fail")36}37func main() {38	p := Prog{"Go", 2016}39	p.failf()40}41import (42type Prog struct {43}44func (p *Prog) failf() {45	fmt.Println("Fail")46}47func main() {48	p := Prog{"Go", 2016}49	p.failf()50}51import (52type Prog struct {53}54func (p *Prog) failf() {55	fmt.Println("Fail")56}57func main() {58	p := Prog{"Go", 2016}59	p.failf()60}61import (

failf

Using AI Code Generation

1import (2func main() {3	prog := Prog{}4	prog.failf("Error: %s", "Something went wrong")5}6type Prog struct {7}8func (p *Prog) failf(format string, args ...interface{}) {9	fmt.Printf("Error: %s", "Something went wrong")10}11import (12func main() {13	prog := Prog{}14	prog.failf("Error: %s", "Something went wrong")15}16type Prog struct {17}18func (p *Prog) failf(format string, args ...interface{}) {19	fmt.Printf("Error: %s", "Something went wrong")20}21import (22func main() {23	prog := Prog{}24	prog.failf("Error: %s", "Something went wrong")25}26type Prog struct {27}28func (p *Prog) failf(format string, args ...interface{}) {29	fmt.Printf("Error: %s", "Something went wrong")30}31import (32func main() {33	prog := Prog{}34	prog.failf("Error: %s", "Something went wrong")35}36type Prog struct {37}38func (p *Prog) failf(format string, args ...interface{}) {39	fmt.Printf("Error: %s", "Something went wrong")40}41import (42func main() {43	prog := Prog{}44	prog.failf("Error: %s", "Something went wrong")45}46type Prog struct {47}48func (p *Prog) failf(format string, args ...interface{}) {49	fmt.Printf("Error: %s", "Something went wrong")50}51import (

failf

Using AI Code Generation

1import (2type Prog struct {3}4func main() {5	p := Prog{7, "abc"}6	defer p.cleanup()7	p.setValue("def")8	fmt.Println(p)9}10func (p *Prog) setValue(s string) {11	if s == "aaa" {12		p.failf("can't set value %q", s)13	}14}15func (p *Prog) failf(format string, args ...interface{}) {16	log.Fatalf(format, args...)17}18func (p *Prog) cleanup() {19	fmt.Println("cleaning up")20}

failf

Using AI Code Generation

1import (2func main() {3 fmt.Println("I am in main")4 log.Fatal("I am in main")5 fmt.Println("I am in main")6}

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