diff --git a/attrs.go b/attrs.go
index 2bb2d576..894d080e 100644
--- a/attrs.go
+++ b/attrs.go
@@ -69,6 +69,20 @@ func fileInfoFromStat(stat *FileStat, name string) os.FileInfo {
 	}
 }
 
+// FileInfoUidGid extends os.FileInfo and adds callbacks for Uid and Gid retrieval,
+// as an alternative to *syscall.Stat_t objects on unix systems.
+type FileInfoUidGid interface {
+	os.FileInfo
+	Uid() uint32
+	Gid() uint32
+}
+
+// FileInfoUidGid extends os.FileInfo and adds a callbacks for extended data retrieval.
+type FileInfoExtendedData interface {
+	os.FileInfo
+	Extended() []StatExtended
+}
+
 func fileStatFromInfo(fi os.FileInfo) (uint32, *FileStat) {
 	mtime := fi.ModTime().Unix()
 	atime := mtime
@@ -86,5 +100,22 @@ func fileStatFromInfo(fi os.FileInfo) (uint32, *FileStat) {
 	// os specific file stat decoding
 	fileStatFromInfoOs(fi, &flags, fileStat)
 
+	// The call above will include the sshFileXferAttrUIDGID in case
+	// the os.FileInfo can be casted to *syscall.Stat_t on unix.
+	// If fi implements FileInfoUidGid, retrieve Uid, Gid from it instead.
+	if fiExt, ok := fi.(FileInfoUidGid); ok {
+		flags |= sshFileXferAttrUIDGID
+		fileStat.UID = fiExt.Uid()
+		fileStat.GID = fiExt.Gid()
+	}
+
+	// if fi implements FileInfoExtendedData, retrieve extended data from it
+	if fiExt, ok := fi.(FileInfoExtendedData); ok {
+		fileStat.Extended = fiExt.Extended()
+		if len(fileStat.Extended) > 0 {
+			flags |= sshFileXferAttrExtended
+		}
+	}
+
 	return flags, fileStat
 }
diff --git a/ls_formatting.go b/ls_formatting.go
index e083e22a..19271ad7 100644
--- a/ls_formatting.go
+++ b/ls_formatting.go
@@ -60,6 +60,13 @@ func runLs(idLookup NameLookupFileLister, dirent os.FileInfo) string {
 		uid = lsFormatID(sys.UID)
 		gid = lsFormatID(sys.GID)
 	default:
+		if fiExt, ok := dirent.(FileInfoUidGid); ok {
+			uid = lsFormatID(fiExt.Uid())
+			gid = lsFormatID(fiExt.Gid())
+
+			break
+		}
+
 		numLinks, uid, gid = lsLinksUIDGID(dirent)
 	}
 
diff --git a/packet.go b/packet.go
index d89ad997..b06d0b95 100644
--- a/packet.go
+++ b/packet.go
@@ -71,6 +71,15 @@ func marshalFileInfo(b []byte, fi os.FileInfo) []byte {
 		b = marshalUint32(b, fileStat.Mtime)
 	}
 
+	if flags&sshFileXferAttrExtended != 0 {
+		b = marshalUint32(b, uint32(len(fileStat.Extended)))
+
+		for _, attr := range fileStat.Extended {
+			b = marshalString(b, attr.ExtType)
+			b = marshalString(b, attr.ExtData)
+		}
+	}
+
 	return b
 }
 
diff --git a/request-interfaces.go b/request-interfaces.go
index 75c6c393..b54fa35b 100644
--- a/request-interfaces.go
+++ b/request-interfaces.go
@@ -75,7 +75,7 @@ type StatVFSFileCmder interface {
 // Note in cases of an error, the error text will be sent to the client.
 // Called for Methods: List, Stat, Readlink
 //
-// Since Filelist returns an os.FileInfo, this can make it non-ideal for impelmenting Readlink.
+// Since Filelist returns an os.FileInfo, this can make it non-ideal for implementing Readlink.
 // This is because the Name receiver method defined by that interface defines that it should only return the base name.
 // However, Readlink is required to be capable of returning essentially any arbitrary valid path relative or absolute.
 // In order to implement this more expressive requirement, implement [ReadlinkFileLister] which will then be used instead.
@@ -136,6 +136,13 @@ type NameLookupFileLister interface {
 // error if at end of list. This is testable by comparing how many you
 // copied to how many could be copied (eg. n < len(ls) below).
 // The copy() builtin is best for the copying.
+// ListerAt provides entries that satisfy the os.FileInfo interface.
+// Uid and gid information will on unix systems be retrieved from
+// [os.FileInfo.Sys] if this function returns a [syscall.Stat_t].
+// Alternatively, if the entry implements [FileInfoUidGid], it will be
+// used for uid and gid information.
+// If the entry implements [FileInfoExtended], extended attributes will
+// also be returned to the client.
 // Note in cases of an error, the error text will be sent to the client.
 type ListerAt interface {
 	ListAt([]os.FileInfo, int64) (int, error)