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Cleanup hardlinking code

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This moves special file link data to the chunk fields like symlink
hardlinks.
This commit is contained in:
John K. Luebs
2023-10-04 10:53:19 -05:00
parent b8c0b1f86e
commit ee19d44403
2 changed files with 31 additions and 31 deletions
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51
src/duplicacy_entry.go
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@@ -25,8 +25,8 @@ import (
)
const (
entrySymHardLinkRootChunkMarker = -9
entrySymHardLinkTargetChunkMarker = -10
entryHardLinkRootChunkMarker = -9
entryHardLinkTargetChunkMarker = -10
)
// This is the hidden directory in the repository for storing various files.
@@ -126,6 +126,13 @@ func (entry *Entry) Copy() *Entry {
}
func (entry *Entry) HardLinkTo(target *Entry, startChunk int, endChunk int) *Entry {
endOffset := target.EndOffset
if !target.IsFile() {
startChunk = target.StartChunk
endChunk = entry.EndChunk
endOffset = entry.EndOffset
}
return &Entry{
Path: entry.Path,
Size: target.Size,
@@ -140,7 +147,7 @@ func (entry *Entry) HardLinkTo(target *Entry, startChunk int, endChunk int) *Ent
StartChunk: startChunk,
StartOffset: target.StartOffset,
EndChunk: endChunk,
EndOffset: target.EndOffset,
EndOffset: endOffset,
Attributes: target.Attributes,
}
@@ -519,31 +526,27 @@ func (entry *Entry) IsSpecial() bool {
return entry.Mode&uint32(os.ModeNamedPipe|os.ModeDevice|os.ModeCharDevice|os.ModeSocket) != 0
}
func (entry *Entry) IsFileOrSpecial() bool {
return entry.Mode&uint32(os.ModeDir|os.ModeSymlink|os.ModeIrregular) == 0
}
func (entry *Entry) IsComplete() bool {
return entry.Size >= 0
}
func (entry *Entry) IsHardlinkedFrom() bool {
return (entry.IsFileOrSpecial() && len(entry.Link) > 0 && entry.Link != "/") || (entry.IsLink() && entry.StartChunk == entrySymHardLinkTargetChunkMarker)
return (entry.IsFile() && len(entry.Link) > 0 && entry.Link != "/") || (!entry.IsDir() && entry.EndChunk == entryHardLinkTargetChunkMarker)
}
func (entry *Entry) IsHardlinkRoot() bool {
return (entry.IsFileOrSpecial() && entry.Link == "/") || (entry.IsLink() && entry.StartChunk == entrySymHardLinkRootChunkMarker)
return (entry.IsFile() && entry.Link == "/") || (!entry.IsDir() && entry.EndChunk == entryHardLinkRootChunkMarker)
}
func (entry *Entry) GetHardlinkId() (int, error) {
if entry.IsLink() {
if entry.StartChunk != entrySymHardLinkTargetChunkMarker {
return 0, errors.New("Symlink entry not marked as hardlinked")
}
return entry.StartOffset, nil
} else {
if entry.IsFile() {
i, err := strconv.ParseUint(entry.Link, 16, 64)
return int(i), err
} else {
if entry.EndChunk != entryHardLinkTargetChunkMarker {
return 0, errors.New("Symlink entry not marked as hardlinked")
}
return entry.EndOffset, nil
}
}
@@ -824,17 +827,19 @@ func ListEntries(top string, path string, patterns []string, nobackupFile string
continue
}
entry.Size = 0
if entry.IsLink() {
entry.StartChunk = entrySymHardLinkTargetChunkMarker
entry.StartOffset = linkIndex
} else {
if entry.IsFile() {
entry.Link = strconv.FormatInt(int64(linkIndex), 16)
}
} else {
if entry.IsLink() {
entry.StartChunk = entrySymHardLinkRootChunkMarker
} else {
entry.EndChunk = entryHardLinkTargetChunkMarker
entry.EndOffset = linkIndex
}
listingChannel <- entry
continue
} else {
if entry.IsFile() {
entry.Link = "/"
} else {
entry.EndChunk = entryHardLinkRootChunkMarker
}
listingState.linkTable[k] = -1
linkKey = &k