Hello everyone, I looked at the contents of the tar-file in hex editor. What I noticed is that the tar header is formed incorrectly. It's supposed to contain the "ustar" TMAGIC indicator at offset 257 followed by a null. But, what I get is "ustar" followed by a space (0x20). Then at offset 263, it's supposed to be the TVERSION version "00", but I am seeing a space (0x20) and then a null (0x00).
Tar creates this kind of header: 0000400 \0 u s t a r \0 m a k i n e n The correct form should be: 0000400 \0 u s t a r \0 0 0 \0 m a k i n e n In the tar source code header-file tar/tar.h this defines this as follows: ... #define TMAGIC "ustar" /* ustar magic 6 chars + '\0' */ #define TMAGLEN 6 /* "ustar" including '\0' */ #define TVERSION "00" #define TVERSLEN 2 ... In the comment it is said TMAGIC has "ustar + null", but there is only string "ustar" set, not the null after it. Maybe this is the reason for the incorrect header? I found a build for the GNU tar from 2003 and this bug was also there, so maybe it has circulated over 20 years... Kind Regards, <Juha/>
