1 files changed, 19 insertions, 0 deletions
diff --git a/internal/scan/fileid_unix.go b/internal/scan/fileid_unix.go
new file mode 100644
index 0000000..e29066a
--- /dev/null
+++ b/internal/scan/fileid_unix.go
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+//go:build unix
+
+package scan
+
+import (
+	"io/fs"
+	"syscall"
+)
+
+// fileID returns the device and inode info was read from.
+func fileID(info fs.FileInfo) (dev, ino uint64) {
+	st, ok := info.Sys().(*syscall.Stat_t)
+	if !ok {
+		return 0, 0
+	}
+	return uint64(st.Dev), uint64(st.Ino)
+}