tar2sqfs (part of https://github.com/topics/tar2sqfs) rejects tarballs
made with git archive with the message
invalid tar header checksum!
tar2sqfs recomputes the tarball's checksum to verify it. Its checksum
implementation agrees with GNU tar, which contains a comment that states
Fill in the checksum field. It's formatted differently from the
other fields: it has [6] digits, a null, then a space ...
Correcting this allows tar2sqfs to correctly process the tarballs made
by git archive.
Signed-off-by: Matt Turner <[email protected]>
---
archive-tar.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/archive-tar.c b/archive-tar.c
index 3e53aac1e6..f9a157bfd1 100644
--- a/archive-tar.c
+++ b/archive-tar.c
@@ -215,7 +215,9 @@ static void prepare_header(struct archiver_args *args,
memcpy(header->magic, "ustar", 6);
memcpy(header->version, "00", 2);
- xsnprintf(header->chksum, sizeof(header->chksum), "%07o",
ustar_header_chksum(header));
+ xsnprintf(header->chksum, sizeof(header->chksum), "%06o",
ustar_header_chksum(header));
+ header->chksum[6] = '\0';
+ header->chksum[7] = ' ';
}
static void write_extended_header(struct archiver_args *args,
--
2.22.0.dirty
