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List:       busybox
Subject:    RE: EXTERNAL: Re: Tar/gzip Commands: Busybox vs. GNU (error: Invalid magic)
From:       Bernhard Reutner-Fischer <rep.dot.nop () gmail ! com>
Date:       2015-03-22 11:20:59
Message-ID: 5CB0ACEF-1695-400E-8500-44E9AC723324 () gmail ! com
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On March 20, 2015 5:15:18 PM GMT+01:00, "Chen, Simon (N-DCR SYSTEM HOUSE)" <simon.chen@lmco.com> wrote:
>Hi Issac,
>
>Sorry I left out my versions. I am using busybox_1.22.1 on

busybox-1.23.0 had changes in tar, I suggest you try that and/or current master.

HTH,

>poky-daisy-11.0.1 (Yocto), and it is the current version of fglrx
>(AMD-driver-installer-14.501.1003). If you could remember the version
>of that busybox, please let me know. And thank you for your input, I am
>looking into the Yocto forums.
>
>Sincerely,
>Simon Chen
>
>-----Original Message-----
>From: Isaac Dunham [mailto:ibid.ag@gmail.com] 
>Sent: Thursday, March 19, 2015 7:23 PM
>To: Chen, Simon (N-DCR SYSTEM HOUSE)
>Cc: busybox@busybox.net
>Subject: EXTERNAL: Re: Tar/gzip Commands: Busybox vs. GNU (error:
>Invalid magic)
>
>On Thu, Mar 19, 2015 at 07:34:18PM +0000, Chen, Simon (N-DCR SYSTEM
>HOUSE) wrote:
>> Hi,
>> 
>> I am working on an embedded OS called YOCTO, which apparently
>includes 
>> BusyBox into its build. YOCTO is currently running on a target board,
>
>> and I am trying to integrate an AMD Radeon E8860 GPU into it.
>> This requires installation of a driver called "fglrx", otherwise also
>
>> known as AMD Catalyst. The driver installer (which is a .run) uses 
>> BusyBox "gzip -cd" and "tar" commands to extract an undisclosed 
>> internal file, which returned the error message "Invalid magic." This
>
>> does not happen when I try running the driver installer on a desktop 
>> UBUNTU OS, which uses GNU. I was wondering what the key differences 
>> between GNU's and Busybox's extraction functions were, and what I 
>> could do to fix this error.
>
>0) You may do better asking in a Yocto forum/list than here.
>Wherever you ask, tell the versions of Busybox, Yocto, and fglrx
>involved.
>
>1) A ".run" file is a self extracting archive, of similar sort to what
>shar makes; however, it is unlikely that you could extract it with
>unshar. You might be able to edit it (use a copy, not the original.)
>
>2) "Invalid magic" means that gzip is getting non-gzip data, or tar is
>getting a compressed archive, or some such thing.
>I've seen this happen when gzip gets passed a filename not ending with
>".gz", and the output goes to tar; if a name ending in ".tgz" is used
>as a temporary file, busybox gzip may act like "cat" and send still-
>compressed data to stdout.
>I do not remember which version of Busybox this affected off the top of
>my head, but it was relatively recent (I think it has been solved
>though).
>The workaround I used was to redirect stdin to read from the file:
>- gzip -dc FILE
>+ gzip -dc < FILE
>
>3) While I don't remember what it is, I know that fglrx has an option
>that will create archives raher than installing the driver.
>This may be your best bet.
>
>> Thanks,
>> Simon Chen
>
>HTH,
>Isaac Dunham
>_______________________________________________
>busybox mailing list
>busybox@busybox.net
>http://lists.busybox.net/mailman/listinfo/busybox


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