tmpfiles: use statx() when aging files

This allows us to properly detect mount points, for free. (Also, allows
us to respect btimes that are newer than the cutoff, which should be
useful when people untar file trees in /var/tmp)

Fixes: #16848

src/basic/missing_stat.h

@@ -50,13 +50,48 @@ struct statx STATX_DEFINITION;
 struct new_statx STATX_DEFINITION;
 
 /* a528d35e8bfcc521d7cb70aaf03e1bd296c8493f (4.11) */
-#ifndef STATX_BTIME
-#define STATX_BTIME 0x00000800U
+#ifndef AT_STATX_DONT_SYNC
+#define AT_STATX_DONT_SYNC 0x4000
 #endif
 
 /* a528d35e8bfcc521d7cb70aaf03e1bd296c8493f (4.11) */
-#ifndef AT_STATX_DONT_SYNC
-#define AT_STATX_DONT_SYNC 0x4000
+#ifndef STATX_TYPE
+#define STATX_TYPE 0x00000001U
+#endif
+
+/* a528d35e8bfcc521d7cb70aaf03e1bd296c8493f (4.11) */
+#ifndef STATX_MODE
+#define STATX_MODE 0x00000002U
+#endif
+
+/* a528d35e8bfcc521d7cb70aaf03e1bd296c8493f (4.11) */
+#ifndef STATX_UID
+#define STATX_UID 0x00000008U
+#endif
+
+/* a528d35e8bfcc521d7cb70aaf03e1bd296c8493f (4.11) */
+#ifndef STATX_ATIME
+#define STATX_ATIME 0x00000020U
+#endif
+
+/* a528d35e8bfcc521d7cb70aaf03e1bd296c8493f (4.11) */
+#ifndef STATX_MTIME
+#define STATX_MTIME 0x00000040U
+#endif
+
+/* a528d35e8bfcc521d7cb70aaf03e1bd296c8493f (4.11) */
+#ifndef STATX_CTIME
+#define STATX_CTIME 0x00000080U
+#endif
+
+/* a528d35e8bfcc521d7cb70aaf03e1bd296c8493f (4.11) */
+#ifndef STATX_INO
+#define STATX_INO 0x00000100U
+#endif
+
+/* a528d35e8bfcc521d7cb70aaf03e1bd296c8493f (4.11) */
+#ifndef STATX_BTIME
+#define STATX_BTIME 0x00000800U
 #endif
 
 /* fa2fcf4f1df1559a0a4ee0f46915b496cc2ebf60 (5.8) */