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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-06-30 16:41:21 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-06-30 16:41:21 +0200
commitf439b20706ade4b5630c3d6c57e6a36ce0dc287a (patch)
tree210abf39ac29d7cf7513f667f63495ef1fd43700 /include/util.h
parent3e920038ecd8cc123b0c8dd957f94a8e1a616c0c (diff)
Add support for repacking condensed sparse files
This commit broadly does the following things: - Rename and move the sparse mapping structure to libutil - Add a function to the data writer for writing condensed versions of sparse files, given the mapping. - This shares code with the already existing function for regular files. The shared code is moved to a common helper function. - Add support to tar2sqfs for repacking sparse files. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'include/util.h')
-rw-r--r--include/util.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/util.h b/include/util.h
index d5b20dd..997cbf5 100644
--- a/include/util.h
+++ b/include/util.h
@@ -5,6 +5,13 @@
#include <sys/types.h>
#include <stdint.h>
+/* layout structure for sparse files, indicating where the actual data is */
+typedef struct sparse_map_t {
+ struct sparse_map_t *next;
+ uint64_t offset;
+ uint64_t count;
+} sparse_map_t;
+
/*
Convert back to forward slashed, remove all preceeding and trailing slashes,
collapse all sequences of slashes, remove all path components that are '.'