libtar: Add an istream_t implementation

The tar_istream_t reads the data from a tar file, having been given
the header, and synthesizes zero bytes for sparse regions.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/tar/tar.h b/include/tar/tar.h
index 128464e..e1bc72a 100644
--- a/include/tar/tar.h
+++ b/include/tar/tar.h
@@ -75,6 +75,9 @@ int read_header(istream_t *fp, tar_header_decoded_t *out);
 
 void clear_header(tar_header_decoded_t *hdr);
 
+istream_t *tar_record_istream_create(istream_t *parent,
+				     const tar_header_decoded_t *hdr);
+
 /*
   Write zero bytes to an output file to padd it to the tar record size.
   Returns 0 on success. On failure, prints error message to stderr.