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debug: use Printf/Warnf for output

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This commit is contained in:
Michael Eischer 2021-03-10 21:20:21 +01:00
parent 547d9b384d
commit dc62ec5933
1 changed files with 33 additions and 33 deletions
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66
cmd/restic/cmd_debug.go
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@ -194,9 +194,9 @@ var cmdDebugExamine = &cobra.Command{
func tryRepairWithBitflip(ctx context.Context, key *crypto.Key, input []byte, bytewise bool) []byte { func tryRepairWithBitflip(ctx context.Context, key *crypto.Key, input []byte, bytewise bool) []byte {
if bytewise { if bytewise {
fmt.Printf(" trying to repair blob by finding a broken byte\n") Printf(" trying to repair blob by finding a broken byte\n")
} else { } else {
fmt.Printf(" trying to repair blob with single bit flip\n") Printf(" trying to repair blob with single bit flip\n")
} }
ch := make(chan int) ch := make(chan int)
@ -206,7 +206,7 @@ func tryRepairWithBitflip(ctx context.Context, key *crypto.Key, input []byte, by
var found bool var found bool
workers := runtime.GOMAXPROCS(0) workers := runtime.GOMAXPROCS(0)
fmt.Printf(" spinning up %d worker functions\n", runtime.GOMAXPROCS(0)) Printf(" spinning up %d worker functions\n", runtime.GOMAXPROCS(0))
for i := 0; i < workers; i++ { for i := 0; i < workers; i++ {
wg.Go(func() error { wg.Go(func() error {
// make a local copy of the buffer // make a local copy of the buffer
@ -220,9 +220,9 @@ func tryRepairWithBitflip(ctx context.Context, key *crypto.Key, input []byte, by
nonce, plaintext := buf[:key.NonceSize()], buf[key.NonceSize():] nonce, plaintext := buf[:key.NonceSize()], buf[key.NonceSize():]
plaintext, err := key.Open(plaintext[:0], nonce, plaintext, nil) plaintext, err := key.Open(plaintext[:0], nonce, plaintext, nil)
if err == nil { if err == nil {
fmt.Printf("\n") Printf("\n")
fmt.Printf(" blob could be repaired by XORing byte %v with 0x%02x\n", idx, pattern) Printf(" blob could be repaired by XORing byte %v with 0x%02x\n", idx, pattern)
fmt.Printf(" hash is %v\n", restic.Hash(plaintext)) Printf(" hash is %v\n", restic.Hash(plaintext))
close(done) close(done)
found = true found = true
fixed = plaintext fixed = plaintext
@ -263,7 +263,7 @@ func tryRepairWithBitflip(ctx context.Context, key *crypto.Key, input []byte, by
select { select {
case ch <- i: case ch <- i:
case <-done: case <-done:
fmt.Printf(" done after %v\n", time.Since(start)) Printf(" done after %v\n", time.Since(start))
return nil return nil
} }
@ -273,7 +273,7 @@ func tryRepairWithBitflip(ctx context.Context, key *crypto.Key, input []byte, by
remaining := len(input) - i remaining := len(input) - i
eta := time.Duration(float64(remaining)/gps) * time.Second eta := time.Duration(float64(remaining)/gps) * time.Second
fmt.Printf("\r%d byte of %d done (%.2f%%), %.0f byte per second, ETA %v", Printf("\r%d byte of %d done (%.2f%%), %.0f byte per second, ETA %v",
i, len(input), float32(i)/float32(len(input))*100, gps, eta) i, len(input), float32(i)/float32(len(input))*100, gps, eta)
info = time.Now() info = time.Now()
} }
@ -286,7 +286,7 @@ func tryRepairWithBitflip(ctx context.Context, key *crypto.Key, input []byte, by
} }
if !found { if !found {
fmt.Printf("\n blob could not be repaired\n") Printf("\n blob could not be repaired\n")
} }
return fixed return fixed
} }
@ -314,7 +314,7 @@ func loadBlobs(ctx context.Context, repo restic.Repository, pack restic.ID, list
Type: restic.PackFile, Type: restic.PackFile,
} }
for _, blob := range list { for _, blob := range list {
fmt.Printf(" loading blob %v at %v (length %v)\n", blob.ID, blob.Offset, blob.Length) Printf(" loading blob %v at %v (length %v)\n", blob.ID, blob.Offset, blob.Length)
buf := make([]byte, blob.Length) buf := make([]byte, blob.Length)
err := be.Load(ctx, h, int(blob.Length), int64(blob.Offset), func(rd io.Reader) error { err := be.Load(ctx, h, int(blob.Length), int64(blob.Offset), func(rd io.Reader) error {
n, err := io.ReadFull(rd, buf) n, err := io.ReadFull(rd, buf)
@ -324,7 +324,7 @@ func loadBlobs(ctx context.Context, repo restic.Repository, pack restic.ID, list
return nil return nil
}) })
if err != nil { if err != nil {
fmt.Fprintf(os.Stderr, "error read: %v\n", err) Warnf("error read: %v\n", err)
continue continue
} }
@ -333,7 +333,7 @@ func loadBlobs(ctx context.Context, repo restic.Repository, pack restic.ID, list
nonce, plaintext := buf[:key.NonceSize()], buf[key.NonceSize():] nonce, plaintext := buf[:key.NonceSize()], buf[key.NonceSize():]
plaintext, err = key.Open(plaintext[:0], nonce, plaintext, nil) plaintext, err = key.Open(plaintext[:0], nonce, plaintext, nil)
if err != nil { if err != nil {
fmt.Fprintf(os.Stderr, "error decrypting blob: %v\n", err) Warnf("error decrypting blob: %v\n", err)
var plain []byte var plain []byte
if tryRepair || repairByte { if tryRepair || repairByte {
plain = tryRepairWithBitflip(ctx, key, buf, repairByte) plain = tryRepairWithBitflip(ctx, key, buf, repairByte)
@ -342,10 +342,10 @@ func loadBlobs(ctx context.Context, repo restic.Repository, pack restic.ID, list
if plain != nil { if plain != nil {
id := restic.Hash(plain) id := restic.Hash(plain)
if !id.Equal(blob.ID) { if !id.Equal(blob.ID) {
fmt.Printf(" repaired blob (length %v), hash is %v, ID does not match, wanted %v\n", len(plain), id, blob.ID) Printf(" repaired blob (length %v), hash is %v, ID does not match, wanted %v\n", len(plain), id, blob.ID)
prefix = "repaired-wrong-hash-" prefix = "repaired-wrong-hash-"
} else { } else {
fmt.Printf(" successfully repaired blob (length %v), hash is %v, ID matches\n", len(plain), id) Printf(" successfully repaired blob (length %v), hash is %v, ID matches\n", len(plain), id)
prefix = "repaired-" prefix = "repaired-"
} }
} else { } else {
@ -362,10 +362,10 @@ func loadBlobs(ctx context.Context, repo restic.Repository, pack restic.ID, list
id := restic.Hash(plaintext) id := restic.Hash(plaintext)
var prefix string var prefix string
if !id.Equal(blob.ID) { if !id.Equal(blob.ID) {
fmt.Printf(" successfully decrypted blob (length %v), hash is %v, ID does not match, wanted %v\n", len(plaintext), id, blob.ID) Printf(" successfully decrypted blob (length %v), hash is %v, ID does not match, wanted %v\n", len(plaintext), id, blob.ID)
prefix = "wrong-hash-" prefix = "wrong-hash-"
} else { } else {
fmt.Printf(" successfully decrypted blob (length %v), hash is %v, ID matches\n", len(plaintext), id) Printf(" successfully decrypted blob (length %v), hash is %v, ID matches\n", len(plaintext), id)
prefix = "correct-" prefix = "correct-"
} }
if extractPack { if extractPack {
@ -397,7 +397,7 @@ func storePlainBlob(id restic.ID, prefix string, plain []byte) error {
return err return err
} }
fmt.Printf("decrypt of blob %v stored at %v\n", id, filename) Printf("decrypt of blob %v stored at %v\n", id, filename)
return nil return nil
} }
@ -406,7 +406,7 @@ func runDebugExamine(gopts GlobalOptions, args []string) error {
for _, name := range args { for _, name := range args {
id, err := restic.ParseID(name) id, err := restic.ParseID(name)
if err != nil { if err != nil {
fmt.Fprintf(os.Stderr, "error: %v\n", err) Warnf("error: %v\n", err)
continue continue
} }
ids = append(ids, id) ids = append(ids, id)
@ -437,7 +437,7 @@ func runDebugExamine(gopts GlobalOptions, args []string) error {
for _, id := range ids { for _, id := range ids {
err := examinePack(gopts.ctx, repo, id) err := examinePack(gopts.ctx, repo, id)
if err != nil { if err != nil {
fmt.Fprintf(os.Stderr, "error: %v\n", err) Warnf("error: %v\n", err)
} }
if err == context.Canceled { if err == context.Canceled {
break break
@ -447,7 +447,7 @@ func runDebugExamine(gopts GlobalOptions, args []string) error {
} }
func examinePack(ctx context.Context, repo restic.Repository, id restic.ID) error { func examinePack(ctx context.Context, repo restic.Repository, id restic.ID) error {
fmt.Printf("examine %v\n", id) Printf("examine %v\n", id)
h := restic.Handle{ h := restic.Handle{
Type: restic.PackFile, Type: restic.PackFile,
@ -457,7 +457,7 @@ func examinePack(ctx context.Context, repo restic.Repository, id restic.ID) erro
if err != nil { if err != nil {
return err return err
} }
fmt.Printf(" file size is %v\n", fi.Size) Printf(" file size is %v\n", fi.Size)
buf, err := backend.LoadAll(ctx, nil, repo.Backend(), h) buf, err := backend.LoadAll(ctx, nil, repo.Backend(), h)
if err != nil { if err != nil {
@ -465,13 +465,13 @@ func examinePack(ctx context.Context, repo restic.Repository, id restic.ID) erro
} }
gotID := restic.Hash(buf) gotID := restic.Hash(buf)
if !id.Equal(gotID) { if !id.Equal(gotID) {
fmt.Printf(" wanted hash %v, got %v\n", id, gotID) Printf(" wanted hash %v, got %v\n", id, gotID)
} else { } else {
fmt.Printf(" hash for file content matches\n") Printf(" hash for file content matches\n")
} }
fmt.Printf(" ========================================\n") Printf(" ========================================\n")
fmt.Printf(" looking for info in the indexes\n") Printf(" looking for info in the indexes\n")
blobsLoaded := false blobsLoaded := false
// examine all data the indexes have for the pack file // examine all data the indexes have for the pack file
@ -486,7 +486,7 @@ func examinePack(ctx context.Context, repo restic.Repository, id restic.ID) erro
continue continue
} }
fmt.Printf(" index %v:\n", idxIDs) Printf(" index %v:\n", idxIDs)
// convert list of blobs to []restic.Blob // convert list of blobs to []restic.Blob
var list []restic.Blob var list []restic.Blob
@ -497,14 +497,14 @@ func examinePack(ctx context.Context, repo restic.Repository, id restic.ID) erro
err = loadBlobs(ctx, repo, id, list) err = loadBlobs(ctx, repo, id, list)
if err != nil { if err != nil {
fmt.Fprintf(os.Stderr, "error: %v\n", err) Warnf("error: %v\n", err)
} else { } else {
blobsLoaded = true blobsLoaded = true
} }
} }
fmt.Printf(" ========================================\n") Printf(" ========================================\n")
fmt.Printf(" inspect the pack itself\n") Printf(" inspect the pack itself\n")
blobs, _, err := pack.List(repo.Key(), restic.ReaderAt(ctx, repo.Backend(), h), fi.Size) blobs, _, err := pack.List(repo.Key(), restic.ReaderAt(ctx, repo.Backend(), h), fi.Size)
if err != nil { if err != nil {
@ -527,9 +527,9 @@ func checkPackSize(blobs []restic.Blob, fileSize int64) {
}) })
for _, pb := range blobs { for _, pb := range blobs {
fmt.Printf(" %v blob %v, offset %-6d, raw length %-6d\n", pb.Type, pb.ID, pb.Offset, pb.Length) Printf(" %v blob %v, offset %-6d, raw length %-6d\n", pb.Type, pb.ID, pb.Offset, pb.Length)
if offset != uint64(pb.Offset) { if offset != uint64(pb.Offset) {
fmt.Printf(" hole in file, want offset %v, got %v\n", offset, pb.Offset) Printf(" hole in file, want offset %v, got %v\n", offset, pb.Offset)
} }
offset += uint64(pb.Length) offset += uint64(pb.Length)
size += uint64(pb.Length) size += uint64(pb.Length)
@ -541,8 +541,8 @@ func checkPackSize(blobs []restic.Blob, fileSize int64) {
size += 4 size += 4
if uint64(fileSize) != size { if uint64(fileSize) != size {
fmt.Printf(" file sizes do not match: computed %v from index, file size is %v\n", size, fileSize) Printf(" file sizes do not match: computed %v from index, file size is %v\n", size, fileSize)
} else { } else {
fmt.Printf(" file sizes match\n") Printf(" file sizes match\n")
} }
} }