AW: AW: AW: Issue with tar (Busybox 1.20.2): unknown file type

piquemal michel michel_piquemal at yahoo.fr
Mon Jun 24 10:46:48 UTC 2013


Thanks again Dietmar, this is very helpful: I'll check that.

Is there a way to check with which option target's uClibc has been built? Obviously I only have .so files on the target, so it's hard to know if it was built with LFS, or any other important option.
My toolchain was build with default uClibc buildroot's options, so no LFS it seems.
If there is a way to know which options my target's lib has, then I'll rebuild tools with corresponding ones for sure. Or if not, what should be the safest options then?

Thanks!



----- Mail original -----
De : "dietmar.schindler at manroland-web.com" <dietmar.schindler at manroland-web.com>
À : 
Cc : busybox at busybox.net
Envoyé le : Lundi 24 juin 2013 10h31
Objet : AW: AW: AW: Issue with tar (Busybox 1.20.2): unknown file type

> Von: piquemal michel [mailto:michel_piquemal at yahoo.fr]
> Gesendet: Sonntag, 23. Juni 2013 09:40
> ...
> Did add printf (bb_error_msg) in libbb/recursive_action.c:recursive_action(), after
> status = (follow ? stat : lstat)(fileName, &statbuf)
>
> bb_error_msg("status=%d flags=%x  statbuf.st_ino=%d statbuf.st_mode=%d", status, flags,
> statbuf.st_ino, statbuf.st_mode);
>
> and compiled 2 versions: one static (that works), and one dynamic.
>
>
> I tryied to tar tst directory (which contains 2 files) with the 2 compiled versions:
>
> # busybox_stat tar -cf toto.tar tst
> tar: status=0 flags=1  statbuf.st_ino=838 statbuf.st_mode=16877
> tar: status=0 flags=1  statbuf.st_ino=861 statbuf.st_mode=33188
> tar: status=0 flags=1  statbuf.st_ino=857 statbuf.st_mode=33188
>
> # busybox_dyn tar -cf toto.tar tst
>
> tar: status=0 flags=1  statbuf.st_ino=0 statbuf.st_mode=838
> tar: tst: unknown file type
> tar: error exit delayed from previous errors

Apparently there is a mismatch between the expected and the effective layout of "struct stat". Are you sure that when compiling busybox, the same (or a compatible) definition of "struct stat" was used as in the target library? You could also print "sizeof statbuf.st_ino" and "offsetof(struct stat, st_mode)" or a dump of the bytes in "statbuf". Or you could try if changing the option CONFIG_LFS makes any difference.
Another approach: You wrote that the dynamic busybox works on your aboriginal system image; you could copy the shared object from there to your target.
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