gopkg.in/hugelgupf/u-root.v2@v2.0.0-20180831055005-3f8fdb0ce09d/pkg/cpio/newc_test.go (about) 1 // Copyright 2012 the u-root Authors. All rights reserved 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package cpio 6 7 import ( 8 "bytes" 9 "io" 10 "io/ioutil" 11 "reflect" 12 "syscall" 13 "testing" 14 15 "github.com/u-root/u-root/pkg/uio" 16 ) 17 18 func TestSimple(t *testing.T) { 19 r := Newc.Reader(bytes.NewReader(testCPIO)) 20 files, err := ReadAllRecords(r) 21 if err != nil { 22 t.Fatal(err) 23 } 24 25 for i, f := range files { 26 if f.String() != testResult[i] { 27 t.Errorf("Value %d: got \n%s, want \n%s", i, f.String(), testResult[i]) 28 } 29 t.Logf("Value %d: got \n%s, want \n%s", i, f.String(), testResult[i]) 30 } 31 } 32 33 func TestWriteRead(t *testing.T) { 34 contents := []byte("LANAAAAAAAAAA") 35 rec := StaticRecord(contents, Info{ 36 Ino: 1, 37 Mode: syscall.S_IFREG | 2, 38 UID: 3, 39 GID: 4, 40 NLink: 5, 41 MTime: 6, 42 FileSize: 7, 43 Major: 8, 44 Minor: 9, 45 Rmajor: 10, 46 Rminor: 11, 47 Name: "foobar", 48 }) 49 50 buf := &bytes.Buffer{} 51 w := Newc.Writer(buf) 52 if err := w.WriteRecord(rec); err != nil { 53 t.Errorf("Could not write record %q: %v", rec.Name, err) 54 } 55 56 if err := WriteTrailer(w); err != nil { 57 t.Errorf("Could not write trailer: %v", err) 58 } 59 60 r := Newc.Reader(bytes.NewReader(buf.Bytes())) 61 rec2, err := r.ReadRecord() 62 if err != nil { 63 t.Errorf("Could not read record: %v", err) 64 } 65 66 if rec2.Info != rec.Info { 67 t.Errorf("Records not equal:\n%#v\n%#v", rec.Info, rec2.Info) 68 } 69 70 contents2, err := ioutil.ReadAll(uio.Reader(rec2)) 71 if err != nil { 72 t.Errorf("Could not read %q: %v", rec2.Name, err) 73 } 74 75 if bytes.Compare(contents2, contents) != 0 { 76 t.Errorf("Read(%q) = %s, want %s", rec2.Name, string(contents2), contents) 77 } 78 } 79 80 func TestReadWrite(t *testing.T) { 81 r := Newc.Reader(bytes.NewReader(testCPIO)) 82 files, err := ReadAllRecords(r) 83 if err != nil { 84 t.Fatalf("Reading testCPIO reader: %v", err) 85 } 86 87 buf := &bytes.Buffer{} 88 w := Newc.Writer(buf) 89 if err := WriteRecords(w, files); err != nil { 90 t.Fatalf("WriteRecords: %v", err) 91 } 92 93 if err := WriteTrailer(w); err != nil { 94 t.Fatalf("WriteTrailer: %v", err) 95 } 96 97 r = Newc.Reader(bytes.NewReader(testCPIO)) 98 files, err = ReadAllRecords(r) 99 if err != nil { 100 t.Fatalf("Reading testCPIO reader: %v", err) 101 } 102 103 r = Newc.Reader(bytes.NewReader(buf.Bytes())) 104 filesReadBack, err := ReadAllRecords(r) 105 if err != nil { 106 t.Fatalf("TestReadWrite: reading generated data: %v", err) 107 } 108 109 // Now check a few things: arrays should be same length, Headers should match, 110 // names should be the same, and data should be the same. If this all works, 111 // it means we read in serialized data, wrote it out, read it in, and the 112 // structs all matched. 113 if len(files) != len(filesReadBack) { 114 t.Fatalf("[]file len from testCPIO %v and generated %v are not the same and should be", len(files), len(filesReadBack)) 115 } 116 for i := range files { 117 f1 := files[i] 118 f2 := filesReadBack[i] 119 120 if f1.Info != f2.Info { 121 t.Errorf("index %d: testCPIO Info\n%v\ngenerated Info\n%v\n", i, f1.Info, f2.Info) 122 } 123 124 contents1, err := ioutil.ReadAll(uio.Reader(f1)) 125 if err != nil { 126 t.Errorf("index %d(%q): can't read from the source: %v", i, f1.Name, err) 127 } 128 contents2, err := ioutil.ReadAll(uio.Reader(f2)) 129 if err != nil { 130 t.Errorf("index %d(%q): can't read from the dest: %v", i, f2.Name, err) 131 } 132 if !bytes.Equal(contents1, contents2) { 133 t.Errorf("index %d content: file 1 (%q) is %v, file 2 (%q) wanted %v", i, f1.Name, contents1, f2.Name, contents2) 134 } 135 } 136 } 137 138 func TestBad(t *testing.T) { 139 r := Newc.Reader(bytes.NewReader(badCPIO)) 140 if _, err := r.ReadRecord(); err != io.EOF { 141 t.Errorf("ReadRecord(badCPIO) got %v, want %v", err, io.EOF) 142 } 143 144 r = Newc.Reader(bytes.NewReader(badMagicCPIO)) 145 if _, err := r.ReadRecord(); err == nil { 146 t.Errorf("Wanted bad magic err, got nil") 147 } 148 } 149 150 /* 151 drwxrwxr-x 9 rminnich rminnich 0 Jan 22 22:18 . 152 drwxr-xr-x 2 root root 0 Jan 22 22:18 etc 153 -rw-r--r-- 1 root root 118 Jan 22 22:18 etc/localtime 154 -rw-r--r-- 1 root root 81 Jan 22 22:18 etc/resolv.conf 155 drwxr-xr-x 2 root root 0 Jan 22 22:18 lib64 156 drwxr-xr-x 2 root root 0 Jan 22 22:18 tcz 157 drwxr-xr-x 2 root root 0 Jan 22 22:18 bin 158 drwxr-xr-x 2 root root 0 Jan 22 22:18 tmp 159 drwxr-xr-x 2 root root 0 Jan 22 22:18 dev 160 crw-r--r-- 1 root root 5, 1 Jan 22 22:18 dev/console 161 crw-r--r-- 1 root root 4, 64 Jan 22 22:18 dev/ttyS0 162 brw-rw---- 1 root root 7, 2 Jan 22 22:18 dev/loop2 163 crw------- 1 root root 10, 237 Jan 22 22:18 dev/loop-control 164 brw-rw---- 1 root root 7, 7 Jan 22 22:18 dev/loop7 165 brw-rw---- 1 root root 7, 6 Jan 22 22:18 dev/loop6 166 brw-rw---- 1 root root 7, 4 Jan 22 22:18 dev/loop4 167 brw-rw---- 1 root root 7, 1 Jan 22 22:18 dev/loop1 168 brw-rw---- 1 root root 7, 5 Jan 22 22:18 dev/loop5 169 crw-r--r-- 1 root root 1, 3 Jan 22 22:18 dev/null 170 brw-rw---- 1 root root 7, 0 Jan 22 22:18 dev/loop0 171 brw-rw---- 1 root root 7, 3 Jan 22 22:18 dev/loop3 172 drwxr-xr-x 3 root root 0 Jan 22 22:18 usr 173 drwxr-xr-x 2 root root 0 Jan 22 22:18 usr/lib 174 */ 175 var ( 176 badCPIO = []byte{} 177 badMagicCPIO = []byte{0, 0, 0, 0, 0, 0} 178 testCPIO = []byte{ 179 0x30, 0x37, 0x30, 0x37, 0x30, 0x31, 0x30, 0x30, 0x33, 0x30, 0x45, 0x33, 180 0x43, 0x31, 0x30, 0x30, 0x30, 0x30, 0x34, 0x31, 0x46, 0x44, 0x30, 0x30, 181 0x30, 0x30, 0x30, 0x33, 0x45, 0x38, 0x30, 0x30, 0x30, 0x30, 0x30, 0x33, 182 0x45, 0x38, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x39, 0x35, 0x38, 183 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433 0x30, 0x30, 0x30, 0x30, 0x30, 0x42, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 434 0x30, 0x30, 0x54, 0x52, 0x41, 0x49, 0x4c, 0x45, 0x52, 0x21, 0x21, 0x21, 435 0, 0, 0, 0, 436 } 437 438 testResult = []string{ 439 ".: Ino 3204033 Mode 040775 UID 1000 GID 1000 NLink 9 MTime 2017-01-23 06:18:54 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 0 Rminor 0", 440 "etc: Ino 3204037 Mode 040755 UID 0 GID 0 NLink 2 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 0 Rminor 0", 441 "etc/localtime: Ino 3195404 Mode 0100644 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 118 Major 252 Minor 0 Rmajor 0 Rminor 0", 442 "etc/resolv.conf: Ino 3177229 Mode 0100644 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 81 Major 252 Minor 0 Rmajor 0 Rminor 0", 443 "lib64: Ino 3204043 Mode 040755 UID 0 GID 0 NLink 2 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 0 Rminor 0", 444 "tcz: Ino 3204036 Mode 040755 UID 0 GID 0 NLink 2 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 0 Rminor 0", 445 "bin: Ino 3204044 Mode 040755 UID 0 GID 0 NLink 2 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 0 Rminor 0", 446 "tmp: Ino 3204045 Mode 040755 UID 0 GID 0 NLink 2 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 0 Rminor 0", 447 "dev: Ino 3204038 Mode 040755 UID 0 GID 0 NLink 2 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 0 Rminor 0", 448 "dev/console: Ino 3197985 Mode 020644 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 5 Rminor 1", 449 "dev/ttyS0: Ino 3197986 Mode 020644 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 4 Rminor 64", 450 "dev/loop2: Ino 3197987 Mode 060660 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 7 Rminor 2", 451 "dev/loop-control: Ino 3197983 Mode 020600 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 10 Rminor 237", 452 "dev/loop7: Ino 3197984 Mode 060660 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 7 Rminor 7", 453 "dev/loop6: Ino 3197975 Mode 060660 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 7 Rminor 6", 454 "dev/loop4: Ino 3197979 Mode 060660 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 7 Rminor 4", 455 "dev/loop1: Ino 3197981 Mode 060660 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 7 Rminor 1", 456 "dev/loop5: Ino 3197982 Mode 060660 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 7 Rminor 5", 457 "dev/null: Ino 3197988 Mode 020644 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 1 Rminor 3", 458 "dev/loop0: Ino 3197976 Mode 060660 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 7 Rminor 0", 459 "dev/loop3: Ino 3197980 Mode 060660 UID 0 GID 0 NLink 1 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 7 Rminor 3", 460 "usr: Ino 3204041 Mode 040755 UID 0 GID 0 NLink 3 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 0 Rminor 0", 461 "usr/lib: Ino 3204042 Mode 040755 UID 0 GID 0 NLink 2 MTime 2017-01-23 06:18:50 +0000 UTC FileSize 0 Major 252 Minor 0 Rmajor 0 Rminor 0", 462 } 463 ) 464 465 // testReproducible verifies that we can produce reproducible cpio archives for newc format. 466 func TestReproducible(t *testing.T) { 467 contents := []byte("LANAAAAAAAAAA") 468 rec := []Record{StaticRecord(contents, Info{ 469 Ino: 1, 470 Mode: syscall.S_IFREG | 2, 471 UID: 3, 472 GID: 4, 473 NLink: 5, 474 MTime: 6, 475 FileSize: 7, 476 Major: 8, 477 Minor: 9, 478 Rmajor: 10, 479 Rminor: 11, 480 Name: "foobar", 481 }), 482 } 483 484 // First test that it fails unless we make it reproducible 485 486 b1 := &bytes.Buffer{} 487 w := Newc.Writer(b1) 488 if err := WriteRecords(w, rec); err != nil { 489 t.Errorf("Could not write record %q: %v", rec[0].Name, err) 490 } 491 rec[0].ReaderAt = bytes.NewReader(contents) 492 b2 := &bytes.Buffer{} 493 w = Newc.Writer(b2) 494 rec[0].MTime++ 495 if err := WriteRecords(w, rec); err != nil { 496 t.Errorf("Could not write record %q: %v", rec[0].Name, err) 497 } 498 499 if reflect.DeepEqual(b1.Bytes()[:], b2.Bytes()[:]) { 500 t.Error("Reproducible: compared as same, wanted different") 501 } 502 503 // Second test that it works if we make it reproducible 504 // It does indeed fail without the second call. 505 506 b1 = &bytes.Buffer{} 507 w = Newc.Writer(b1) 508 rec[0].ReaderAt = bytes.NewReader([]byte(contents)) 509 MakeAllReproducible(rec) 510 if err := WriteRecords(w, rec); err != nil { 511 t.Errorf("Could not write record %q: %v", rec[0].Name, err) 512 } 513 514 b2 = &bytes.Buffer{} 515 w = Newc.Writer(b2) 516 rec[0].MTime++ 517 rec[0].ReaderAt = bytes.NewReader([]byte(contents)) 518 MakeAllReproducible(rec) 519 if err := WriteRecords(w, rec); err != nil { 520 t.Errorf("Could not write record %q: %v", rec[0].Name, err) 521 } 522 523 if len(b1.Bytes()) != len(b2.Bytes()) { 524 t.Fatalf("Reproducible \n%v,\n%v: len is different, wanted same", b1.Bytes()[:], b2.Bytes()[:]) 525 } 526 if !reflect.DeepEqual(b1.Bytes()[:], b2.Bytes()[:]) { 527 t.Error("Reproducible: compared different, wanted same") 528 for i := range b1.Bytes() { 529 a := b1.Bytes()[i] 530 b := b2.Bytes()[i] 531 if a != b { 532 t.Errorf("\tb1[%d] is %v, b2[%d] is %v", i, a, i, b) 533 } 534 } 535 } 536 }