[PATCH 18/24] mdrestore: Introduce struct mdrestore_ops

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We will need two sets of functions to work with two versions of metadump
formats. This commit adds the definition for 'struct mdrestore_ops' to hold
pointers to version specific mdrestore functions.

Signed-off-by: Chandan Babu R <chandan.babu@xxxxxxxxxx>
---
 mdrestore/xfs_mdrestore.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/mdrestore/xfs_mdrestore.c b/mdrestore/xfs_mdrestore.c
index 8c847c5a3..895e5cdab 100644
--- a/mdrestore/xfs_mdrestore.c
+++ b/mdrestore/xfs_mdrestore.c
@@ -7,10 +7,18 @@
 #include "libxfs.h"
 #include "xfs_metadump.h"
 
+struct mdrestore_ops {
+	void (*read_header)(void *header, FILE *mdfp);
+	void (*show_info)(void *header, const char *mdfile);
+	void (*restore)(void *header, FILE *mdfp, int data_fd,
+			bool is_target_file);
+};
+
 static struct mdrestore {
-	int	show_progress;
-	int	show_info;
-	int	progress_since_warning;
+	struct mdrestore_ops	*mdrops;
+	int			show_progress;
+	int			show_info;
+	int			progress_since_warning;
 } mdrestore;
 
 static void
-- 
2.39.1




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