Cleanup: Move padd_file function to libtar

It's only ever used for padding tarballs.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/include/tar.h b/include/tar.h
index d0a483c..e86d775 100644
--- a/include/tar.h
+++ b/include/tar.h
@@ -109,6 +109,8 @@ typedef struct {
 #define TAR_MAGIC_OLD "ustar "
 #define TAR_VERSION_OLD " "
 
+#define TAR_RECORD_SIZE (512)
+
 /*
   Returns < 0 on failure, > 0 if cannot encode, 0 on success.
   Prints error/warning messages to stderr.
@@ -130,4 +132,10 @@ int read_header(int fd, tar_header_decoded_t *out);
 
 void clear_header(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.
+*/
+int padd_file(int outfd, sqfs_u64 size);
+
 #endif /* TAR_H */