How to use copyin method of csource Package

Best Syzkaller code snippet using csource.copyin

csource.go

Source:csource.go

...154	csumSeq := 0155	for ci, call := range p.Calls {156		w := new(bytes.Buffer)157		// Copyin.158		for _, copyin := range call.Copyin {159			ctx.copyin(w, &csumSeq, copyin)160		}161		if ctx.opts.Fault && ctx.opts.FaultCall == ci {162			fmt.Fprintf(w, "\twrite_file(\"/sys/kernel/debug/failslab/ignore-gfp-wait\", \"N\");\n")163			fmt.Fprintf(w, "\twrite_file(\"/sys/kernel/debug/fail_futex/ignore-private\", \"N\");\n")164			fmt.Fprintf(w, "\tinject_fault(%v);\n", ctx.opts.FaultNth)165		}166		// Call itself.167		callName := call.Meta.CallName168		resCopyout := call.Index != prog.ExecNoCopyout169		argCopyout := len(call.Copyout) != 0170		emitCall := ctx.opts.EnableTun ||171			callName != "syz_emit_ethernet" &&172				callName != "syz_extract_tcp_res"173		// TODO: if we don't emit the call we must also not emit copyin, copyout and fault injection.174		// However, simply skipping whole iteration breaks tests due to unused static functions.175		if emitCall {176			ctx.emitCall(w, call, ci, resCopyout || argCopyout, trace)177		} else if trace {178			fmt.Fprintf(w, "\t(void)res;\n")179		}180		// Copyout.181		if resCopyout || argCopyout {182			ctx.copyout(w, call, resCopyout)183		}184		calls = append(calls, w.String())185	}186	return calls, p.Vars187}188func (ctx *context) emitCall(w *bytes.Buffer, call prog.ExecCall, ci int, haveCopyout, trace bool) {189	callName := call.Meta.CallName190	native := ctx.sysTarget.SyscallNumbers && !strings.HasPrefix(callName, "syz_")191	fmt.Fprintf(w, "\t")192	if haveCopyout || trace {193		fmt.Fprintf(w, "res = ")194	}195	if native {196		fmt.Fprintf(w, "syscall(%v%v", ctx.sysTarget.SyscallPrefix, callName)197	} else if strings.HasPrefix(callName, "syz_") {198		fmt.Fprintf(w, "%v(", callName)199	} else {200		args := strings.Repeat(",long", len(call.Args))201		if args != "" {202			args = args[1:]203		}204		fmt.Fprintf(w, "((long(*)(%v))%v)(", args, callName)205	}206	for ai, arg := range call.Args {207		if native || ai > 0 {208			fmt.Fprintf(w, ", ")209		}210		switch arg := arg.(type) {211		case prog.ExecArgConst:212			if arg.Format != prog.FormatNative && arg.Format != prog.FormatBigEndian {213				panic("sring format in syscall argument")214			}215			fmt.Fprintf(w, "%v", ctx.constArgToStr(arg))216		case prog.ExecArgResult:217			if arg.Format != prog.FormatNative && arg.Format != prog.FormatBigEndian {218				panic("sring format in syscall argument")219			}220			val := ctx.resultArgToStr(arg)221			if native && ctx.target.PtrSize == 4 {222				// syscall accepts args as ellipsis, resources are uint64223				// and take 2 slots without the cast, which would be wrong.224				val = "(long)" + val225			}226			fmt.Fprintf(w, "%v", val)227		default:228			panic(fmt.Sprintf("unknown arg type: %+v", arg))229		}230	}231	fmt.Fprintf(w, ");\n")232	if trace {233		fmt.Fprintf(w, "\tprintf(\"### call=%v errno=%%u\\n\", res == -1 ? errno : 0);\n", ci)234	}235}236func (ctx *context) generateCsumInet(w *bytes.Buffer, addr uint64, arg prog.ExecArgCsum, csumSeq int) {237	fmt.Fprintf(w, "\tstruct csum_inet csum_%d;\n", csumSeq)238	fmt.Fprintf(w, "\tcsum_inet_init(&csum_%d);\n", csumSeq)239	for i, chunk := range arg.Chunks {240		switch chunk.Kind {241		case prog.ExecArgCsumChunkData:242			fmt.Fprintf(w, "\tNONFAILING(csum_inet_update(&csum_%d, (const uint8*)0x%x, %d));\n",243				csumSeq, chunk.Value, chunk.Size)244		case prog.ExecArgCsumChunkConst:245			fmt.Fprintf(w, "\tuint%d csum_%d_chunk_%d = 0x%x;\n",246				chunk.Size*8, csumSeq, i, chunk.Value)247			fmt.Fprintf(w, "\tcsum_inet_update(&csum_%d, (const uint8*)&csum_%d_chunk_%d, %d);\n",248				csumSeq, csumSeq, i, chunk.Size)249		default:250			panic(fmt.Sprintf("unknown checksum chunk kind %v", chunk.Kind))251		}252	}253	fmt.Fprintf(w, "\tNONFAILING(*(uint16*)0x%x = csum_inet_digest(&csum_%d));\n",254		addr, csumSeq)255}256func (ctx *context) copyin(w *bytes.Buffer, csumSeq *int, copyin prog.ExecCopyin) {257	switch arg := copyin.Arg.(type) {258	case prog.ExecArgConst:259		if arg.BitfieldOffset == 0 && arg.BitfieldLength == 0 {260			ctx.copyinVal(w, copyin.Addr, arg.Size, ctx.constArgToStr(arg), arg.Format)261		} else {262			if arg.Format != prog.FormatNative && arg.Format != prog.FormatBigEndian {263				panic("bitfield+string format")264			}265			fmt.Fprintf(w, "\tNONFAILING(STORE_BY_BITMASK(uint%v, 0x%x, %v, %v, %v));\n",266				arg.Size*8, copyin.Addr, ctx.constArgToStr(arg),267				arg.BitfieldOffset, arg.BitfieldLength)268		}269	case prog.ExecArgResult:270		ctx.copyinVal(w, copyin.Addr, arg.Size, ctx.resultArgToStr(arg), arg.Format)271	case prog.ExecArgData:272		fmt.Fprintf(w, "\tNONFAILING(memcpy((void*)0x%x, \"%s\", %v));\n",273			copyin.Addr, toCString(arg.Data), len(arg.Data))274	case prog.ExecArgCsum:275		switch arg.Kind {276		case prog.ExecArgCsumInet:277			*csumSeq++278			ctx.generateCsumInet(w, copyin.Addr, arg, *csumSeq)279		default:280			panic(fmt.Sprintf("unknown csum kind %v", arg.Kind))281		}282	default:283		panic(fmt.Sprintf("bad argument type: %+v", arg))284	}285}286func (ctx *context) copyinVal(w *bytes.Buffer, addr, size uint64, val string, bf prog.BinaryFormat) {287	switch bf {288	case prog.FormatNative, prog.FormatBigEndian:289		fmt.Fprintf(w, "\tNONFAILING(*(uint%v*)0x%x = %v);\n", size*8, addr, val)290	case prog.FormatStrDec:291		if size != 20 {292			panic("bad strdec size")293		}294		fmt.Fprintf(w, "\tNONFAILING(sprintf((char*)0x%x, \"%%020llu\", (long long)%v));\n", addr, val)295	case prog.FormatStrHex:296		if size != 18 {297			panic("bad strdec size")298		}299		fmt.Fprintf(w, "\tNONFAILING(sprintf((char*)0x%x, \"0x%%016llx\", (long long)%v));\n", addr, val)300	case prog.FormatStrOct:...

copyin

Using AI Code Generation

1CSource cs = new CSource();2cs.copyin();3cs.copyout();4CSource cs = new CSource();5cs.copyin();6cs.copyout();7CSource cs = new CSource();8cs.copyin();9cs.copyout();10CSource cs = new CSource();11cs.copyin();12cs.copyout();13CSource cs = new CSource();14cs.copyin();15cs.copyout();16CSource cs = new CSource();17cs.copyin();18cs.copyout();19CSource cs = new CSource();20cs.copyin();21cs.copyout();22CSource cs = new CSource();23cs.copyin();24cs.copyout();25CSource cs = new CSource();26cs.copyin();27cs.copyout();28CSource cs = new CSource();29cs.copyin();30cs.copyout();31CSource cs = new CSource();32cs.copyin();33cs.copyout();

copyin

Using AI Code Generation

1import (2func main() {3	src, err := os.Open("1.txt")4	if err != nil {5		fmt.Println(err)6		os.Exit(1)7	}8	defer src.Close()9	dst, err := os.Create("2.txt")10	if err != nil {11		fmt.Println(err)12		os.Exit(1)13	}14	defer dst.Close()15	n, err := io.Copy(dst, src)16	if err != nil {17		fmt.Println(err)18		os.Exit(1)19	}20	fmt.Println(n)21}22import (23func main() {24	src, err := os.Open("1.txt")25	if err != nil {26		fmt.Println(err)27		os.Exit(1)28	}29	defer src.Close()30	dst, err := os.Create("2.txt")31	if err != nil {32		fmt.Println(err)33		os.Exit(1)34	}35	defer dst.Close()36	buf := make([]byte, 1024)37	for {38		n, err := src.Read(buf)39		if err != nil {40			if err != io.EOF {41				fmt.Println(err)42			}43		}44		if n > 0 {45			if _, err := dst.Write(buf[:n]); err != nil {46				fmt.Println(err)47				os.Exit(1)48			}49		}50	}51}52import (53func main() {54	src, err := os.Open("1.txt")55	if err != nil {56		fmt.Println(err)57		os.Exit(1)58	}59	defer src.Close()60	dst, err := os.Create("2.txt")61	if err != nil {62		fmt.Println(err)63		os.Exit(1)64	}65	defer dst.Close()66	buf := make([]byte, 1024)67	for {68		n, err := src.Read(buf)69		if err != nil {70			if err != io.EOF {71				fmt.Println(err)72			}73		}

copyin

Using AI Code Generation

1import (2func main() {3    csource, err := csource.NewCSource("test.c")4    if err != nil {5        fmt.Println(err)6        os.Exit(1)7    }8    err = csource.CopyIn("test.c", csource_test.TestC)9    if err != nil {10        fmt.Println(err)11        os.Exit(1)12    }13    err = csource.CopyIn("Makefile", csource_test.Makefile)14    if err != nil {15        fmt.Println(err)16        os.Exit(1)17    }18    err = csource.CopyIn("test.h", csource_test.TestH)19    if err != nil {20        fmt.Println(err)21        os.Exit(1)22    }23    err = csource.CopyIn("test2.c", csource_test.Test2C)24    if err != nil {25        fmt.Println(err)26        os.Exit(1)27    }28    err = csource.CopyIn("test2.h", csource_test.Test2H)29    if err != nil {30        fmt.Println(err)31        os.Exit(1)32    }33    err = csource.CopyIn("test3.c", csource_test.Test3C)34    if err != nil {35        fmt.Println(err)36        os.Exit(1)37    }38    err = csource.CopyIn("test3.h", csource_test.Test3H)39    if err != nil {40        fmt.Println(err)41        os.Exit(1)42    }43    err = csource.CopyIn("test4.c", csource_test.Test4C)44    if err != nil {45        fmt.Println(err)46        os.Exit(1)47    }48    err = csource.CopyIn("test4.h", csource_test.Test4H)

copyin

Using AI Code Generation

1import (2func main() {3	csource.Copyin("test.c")4	fmt.Printf("csource: %s5}6import (7func main() {8	csource.Copyout("test.c")9	fmt.Printf("csource: %s10}11import (12func main() {13	csource.Copyinout("test.c")14	fmt.Printf("csource: %s15}16import (17func main() {18	csource.Copyin("test.c")19	fmt.Printf("csource: %s20}21import (22func main() {23	csource.Copyout("test.c")24	fmt.Printf("csource: %s25}26import (27func main() {28	csource.Copyinout("test.c")29	fmt.Printf("csource: %s30}31import (32func main() {

copyin

Using AI Code Generation

1import java.io.*;2{3public static void main(String args[])throws IOException4{5FileInputStream in=null;6FileOutputStream out=null;7{8in=new FileInputStream("file1.txt");9out=new FileOutputStream("file2.txt");10int c;11while((c=in.read())!=-1)12{13out.write(c);14}15}16{17if(in!=null)18{19in.close();20}21if(out!=null)22{23out.close();24}25}26}27}

copyin

Using AI Code Generation

1public class CopyIn {2public static void main(String args[])throws IOException3{4csource obj=new csource();5obj.copyin("C:\\Users\\Rajesh\\Desktop\\1.txt","C:\\Users\\Rajesh\\Desktop\\2.txt");6}7}8public class CopyOut {9public static void main(String args[])throws IOException10{11csource obj=new csource();12obj.copyout("C:\\Users\\Rajesh\\Desktop\\1.txt","C:\\Users\\Rajesh\\Desktop\\2.txt");13}14}15public class CopyInOut {16public static void main(String args[])throws IOException17{18csource obj=new csource();19obj.copyinout("C:\\Users\\Rajesh\\Desktop\\1.txt","C:\\Users\\Rajesh\\Desktop\\2.txt");20}21}22public class CopyInOut {23public static void main(String args[])throws IOException24{25csource obj=new csource();26obj.copyinout("C:\\Users\\Rajesh\\Desktop\\1.txt","C:\\Users\\Rajesh\\Desktop

copyin

Using AI Code Generation

1import "csource"2import "io"3import "os"4import "strings"5import "fmt"6import "errors"7func main() {

copyin

Using AI Code Generation

1void copyin(csource &x, int n)2{3int i;4for(i=0;i<n;i++)5{6cout<<"Enter the value of x["<<i<<"]:";7cin>>x[i];8}9}10void copyout(csource &x, int n)11{12int i;13for(i=0;i<n;i++)14{15cout<<"The value of x["<<i<<"]:"<<x[i]<<endl;16}17}18void copy(csource &x, csource &y, int n)19{20int i;21for(i=0;i<n;i++)22{23y[i]=x[i];24}25}26void add(csource &x, csource &y, csource &z, int n)27{28int i;29for(i=0;i<n;i++)30{31z[i]=x[i]+y[i];32}33}34void sub(csource &x, csource &y, csource &z, int n)35{36int i;37for(i=0;i<n;i++)38{39z[i]=x[i]-y[i];40}41}

copyin

Using AI Code Generation

1import (2func main() {3	_, filename, _, _ := runtime.Caller(0)4	fset := token.NewFileSet()5	f, err := parser.ParseFile(fset, filename, nil, parser.ParseComments)6	if err != nil {7		fmt.Println(err)8	}9	newfile := strings.Replace(filename, filepath.Base(filename), "copy.go", 1)10	fw, err := os.Create(newfile)11	if err != nil {12		fmt.Println(err)13	}14	defer fw.Close()15	ast.Fprint(fw, fset, f, nil)16}

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