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restic: fix error in fillGenericAttributes for vss volumes

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Extended attributes and security descriptors apparently cannot be
retrieved from a vss volume. Fix the volume check to correctly detect
vss volumes and just completely disable extended attributes for volumes.
This commit is contained in:
Michael Eischer 2024-10-31 19:10:01 +01:00
parent f77e67086c
commit e38f6794cd
1 changed files with 17 additions and 2 deletions
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19
internal/restic/node_windows.go
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@ -372,8 +372,11 @@ func (node *Node) fillGenericAttributes(path string, fi os.FileInfo, stat *statT
return false, nil
}
if strings.HasSuffix(filepath.Clean(path), `\`) {
// filepath.Clean(path) ends with '\' for Windows root volume paths only
isVolume, err := isVolumePath(path)
if err != nil {
return false, err
}
if isVolume {
// Do not process file attributes, created time and sd for windows root volume paths
// Security descriptors are not supported for root volume paths.
// Though file attributes and created time are supported for root volume paths,
@ -464,6 +467,18 @@ func checkAndStoreEASupport(path string) (isEASupportedVolume bool, err error) {
return isEASupportedVolume, err
}
// isVolumePath returns whether a path refers to a volume
func isVolumePath(path string) (bool, error) {
volName, err := prepareVolumeName(path)
if err != nil {
return false, err
}
cleanPath := filepath.Clean(path)
cleanVolume := filepath.Clean(volName + `\`)
return cleanPath == cleanVolume, nil
}
// prepareVolumeName prepares the volume name for different cases in Windows
func prepareVolumeName(path string) (volumeName string, err error) {
// Check if it's an extended length path