Examine file ctime when checking if files have changed.

internal/fs/stat.go

@@ -22,6 +22,7 @@ type ExtendedFileInfo struct {
 
 	AccessTime time.Time // last access time stamp
 	ModTime    time.Time // last (content) modification time stamp
+	ChangeTime time.Time // last status change time stamp
 }
 
 // ExtendedStat returns an ExtendedFileInfo constructed from the os.FileInfo.

internal/fs/stat_bsd.go

@@ -30,6 +30,7 @@ func extendedStat(fi os.FileInfo) ExtendedFileInfo {
 
 		AccessTime: time.Unix(s.Atimespec.Unix()),
 		ModTime:    time.Unix(s.Mtimespec.Unix()),
+		ChangeTime: time.Unix(s.Ctimespec.Unix()),
 	}
 
 	return extFI

internal/fs/stat_unix.go

@@ -30,6 +30,7 @@ func extendedStat(fi os.FileInfo) ExtendedFileInfo {
 
 		AccessTime: time.Unix(s.Atim.Unix()),
 		ModTime:    time.Unix(s.Mtim.Unix()),
+		ChangeTime: time.Unix(s.Ctim.Unix()),
 	}
 
 	return extFI

internal/fs/stat_windows.go

@@ -27,5 +27,7 @@ func extendedStat(fi os.FileInfo) ExtendedFileInfo {
 	mtime := syscall.NsecToTimespec(s.LastWriteTime.Nanoseconds())
 	extFI.ModTime = time.Unix(mtime.Unix())
 
+	extFI.ChangeTime = extFI.ModTime
+
 	return extFI
 }