On Sat, 21 Feb 2004 03:30:18 +0100 Michael Banck <[EMAIL PROTECTED]> wrote:
> To my knowledge, the behaviour change was reverted in tar-1.13.92-5, > so it does not seem necessary to change busybox tar: > > tar (1.13.92-5) unstable; urgency=low > > * patch from Paul Eggert to revert bogus behavior where > POSIXLY_CORRECT > set in the environment forced 'pax' format archives, closes: > #230872 > > http://mail.nongnu.org/archive/html/bug-tar/2004-02/msg00014.html There are two issues. 1) when GNU tar creates archives using the "posix" tar format it uses pax extensions, the busybox-cvs package doesnt understand these headers at all, i have modified upstream busybox to spit out an obvious message when it enconters these. 2) when GNU tar creates archives using the "ustar" tar format (and also "gnu" format i think) it no longer sets the filetype in tar's mode field, it only sets it in the filetype field. The ustar mode field is specified to be 8 octal charcters stored in ascii, it only specifies what will be in 4 of these characters. The 12 least significant bits of a files mode as returned by stat (rwsrwsrwx) are specified as being stored in this field The spec doesnt say what should or shouldnt be in other 4 bytes, GNU tar used to store the files mode in the 5th charcter, it was very convenient as the full mode as seen by stat() was stored in one place. Previous version of busybox tar used to depend on this 5th byte being filled in, it would only set the files mode from the tar filetype field if OLDGNU compatability was enabled. The new version of tar is more strictly in compliance with the spec, but the old way was much more convenient, i guess it must be a portability issue. I have fixed busybox tar in upstream cvs so it should be able to extract ustar archives created with the current version of tar. A couple of handy references are ustar interchange format as described by the opengroup. http://www.opengroup.org/onlinepubs/007904975/utilities/pax.html#tag_04_100_13_06 S tar docuentation, man star(4) is also good. http://www.fokus.gmd.de/research/cc/glone/employees/joerg.schilling/private/man/star.4.html Glenn -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
