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Fix handling of hardlinks and special files

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Also, don't attempt xattr ops on special files on the BSD likes.

TODO: Should have a way to allow restore without special files,
otherwise very cumbersome for a regular user.
This commit is contained in:
John K. Luebs
2023-10-04 01:01:46 -05:00
committed by John K. Luebs
parent a1a3f3d4cb
commit 70ea4d3acf
4 changed files with 91 additions and 58 deletions
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49
src/duplicacy_utils_bsd_common.go
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@@ -25,13 +25,16 @@ func (entry *Entry) ReadAttributes(top string) {
if err != nil {
return
}
attributes, _ := xattr.LList(fullPath)
if len(attributes) > 0 {
entry.Attributes = &map[string][]byte{}
for _, name := range attributes {
attribute, err := xattr.LGet(fullPath, name)
if err == nil {
(*entry.Attributes)[name] = attribute
if !entry.IsSpecial() {
attributes, _ := xattr.LList(fullPath)
if len(attributes) > 0 {
entry.Attributes = &map[string][]byte{}
for _, name := range attributes {
attribute, err := xattr.LGet(fullPath, name)
if err == nil {
(*entry.Attributes)[name] = attribute
}
}
}
}
@@ -41,25 +44,27 @@ func (entry *Entry) ReadAttributes(top string) {
}
func (entry *Entry) SetAttributesToFile(fullPath string) {
names, _ := xattr.LList(fullPath)
for _, name := range names {
newAttribute, found := (*entry.Attributes)[name]
if found {
oldAttribute, _ := xattr.LGet(fullPath, name)
if !bytes.Equal(oldAttribute, newAttribute) {
xattr.LSet(fullPath, name, newAttribute)
if !entry.IsSpecial() {
names, _ := xattr.LList(fullPath)
for _, name := range names {
newAttribute, found := (*entry.Attributes)[name]
if found {
oldAttribute, _ := xattr.LGet(fullPath, name)
if !bytes.Equal(oldAttribute, newAttribute) {
xattr.LSet(fullPath, name, newAttribute)
}
delete(*entry.Attributes, name)
} else {
xattr.LRemove(fullPath, name)
}
delete(*entry.Attributes, name)
} else {
xattr.LRemove(fullPath, name)
}
}
for name, attribute := range *entry.Attributes {
if len(name) > 0 && name[0] == '\x00' {
continue
for name, attribute := range *entry.Attributes {
if len(name) > 0 && name[0] == '\x00' {
continue
}
xattr.LSet(fullPath, name, attribute)
}
xattr.LSet(fullPath, name, attribute)
}
if err := entry.restoreLateFileFlags(fullPath); err != nil {
LOG_DEBUG("ATTR_RESTORE", "Could not restore flags for file %s: %v", fullPath, err)