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compare: correctly use .Prefix() during comparisons

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During the rework of how xattr fields are handled, the comparison code
was not correctly updated. As a result, changes to xattrs would not be
detected in any form. This was detected in the umoci integration suite.
In addition, fix the dh.UsedKeywords logic so auto-detection works
correctly with prefix-based xattrs.

Fixes: ed464af779 ("*: xattr can Update()")
Signed-off-by: Aleksa Sarai <asarai@suse.de>
This commit is contained in:
Aleksa Sarai 2017-09-29 20:33:41 +10:00
parent ba49f2f918
commit 8e5c54f51d
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GPG key ID: 9E18AA267DDB8DB4
3 changed files with 17 additions and 4 deletions
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6
compare.go
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@ -197,7 +197,7 @@ func compareEntry(oldEntry, newEntry Entry) ([]KeyDelta, error) {
for _, kv := range oldKeys {
key := kv.Keyword()
// only add this diff if the new keys has this keyword
if key != "tar_time" && key != "time" && key != "xattr" && len(HasKeyword(newKeys, key)) == 0 {
if key != "tar_time" && key != "time" && key.Prefix() != "xattr" && len(HasKeyword(newKeys, key)) == 0 {
continue
}
@ -216,7 +216,7 @@ func compareEntry(oldEntry, newEntry Entry) ([]KeyDelta, error) {
for _, kv := range newKeys {
key := kv.Keyword()
// only add this diff if the old keys has this keyword
if key != "tar_time" && key != "time" && key != "xattr" && len(HasKeyword(oldKeys, key)) == 0 {
if key != "tar_time" && key != "time" && key.Prefix() != "xattr" && len(HasKeyword(oldKeys, key)) == 0 {
continue
}
@ -414,7 +414,7 @@ func Compare(oldDh, newDh *DirectoryHierarchy, keys []Keyword) ([]InodeDelta, er
if keys != nil {
var filterChanged []KeyDelta
for _, keyDiff := range changed {
if InKeywordSlice(keyDiff.name, keys) {
if InKeywordSlice(keyDiff.name.Prefix(), keys) {
filterChanged = append(filterChanged, keyDiff)
}
}