From 8c449c503f4c37f72089a0dc50e00631a22ed12a Mon Sep 17 00:00:00 2001
From: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Date: Sat, 29 Jun 2019 02:26:11 +0200
Subject: Add support for reading old style GNU sparse tar file format

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
---
 include/tar.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'include/tar.h')

diff --git a/include/tar.h b/include/tar.h
index 4da04f5..6fdb22d 100644
--- a/include/tar.h
+++ b/include/tar.h
@@ -52,10 +52,26 @@ typedef struct {
 	} tail;
 } tar_header_t;
 
+typedef struct {
+	struct {
+		char offset[12];
+		char numbytes[12];
+	} sparse[21];
+	char isextended;
+	char padding[7];
+} gnu_sparse_t;
+
+typedef struct tar_sparse_data_t {
+	struct tar_sparse_data_t *next;
+	uint64_t offset;
+	uint64_t count;
+} tar_sparse_data_t;
+
 typedef struct {
 	struct stat sb;
 	char *name;
 	char *link_target;
+	tar_sparse_data_t *sparse;
 	bool unknown_record;
 } tar_header_decoded_t;
 
@@ -69,6 +85,7 @@ typedef struct {
 
 #define TAR_TYPE_GNU_SLINK 'K'
 #define TAR_TYPE_GNU_PATH 'L'
+#define TAR_TYPE_GNU_SPARSE 'S'
 
 #define TAR_TYPE_PAX 'x'
 
-- 
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