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-rw-r--r--src/helper/tpax_stat_compare.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/src/helper/tpax_stat_compare.c b/src/helper/tpax_stat_compare.c
new file mode 100644
index 0000000..afbe2f4
--- /dev/null
+++ b/src/helper/tpax_stat_compare.c
@@ -0,0 +1,41 @@
+/******************************************************/
+/* tpax: a topological pax implementation */
+/* Copyright (C) 2020 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */
+/******************************************************/
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/stat.h>
+
+#include <tpax/tpax.h>
+#include "tpax_driver_impl.h"
+
+#define TPAX_STAT_COMPARE(member) \
+ if (src -> member - dst -> member) \
+ return (src -> member > dst -> member) \
+ ? (1) : (-1)
+
+int tpax_stat_compare(
+ const struct stat * src,
+ const struct stat * dst)
+{
+ TPAX_STAT_COMPARE(st_dev);
+ TPAX_STAT_COMPARE(st_ino);
+
+ TPAX_STAT_COMPARE(st_mode);
+ TPAX_STAT_COMPARE(st_uid);
+ TPAX_STAT_COMPARE(st_gid);
+
+ TPAX_STAT_COMPARE(st_rdev);
+ TPAX_STAT_COMPARE(st_size);
+ TPAX_STAT_COMPARE(st_blksize);
+ TPAX_STAT_COMPARE(st_blocks);
+
+ TPAX_STAT_COMPARE(st_mtim.tv_sec);
+ TPAX_STAT_COMPARE(st_mtim.tv_nsec);
+
+ return 0;
+}