tar: corrupted octal value in tar header

[Peter Renzland]

On 09  Sep 20, at 08:05 , Denys Vlasenko wrote:
> On Sunday 20 September 2009 11:02, Peter Renzland wrote:
>> On 09  Sep 19, at 20:32 , Denys Vlasenko wrote:
>>> On Sunday 20 September 2009 01:04, Peter Renzland wrote:
>>>> I am attaching a file: snow.tar
>>
>
>> The closest thing appears to be scripts/defconfig:
>
>> defconfig
>
>> which appears to have the identical tar configs, i.e. all turned on.
>
> It would be much easier if you would actually send your .config -
> with defconfig it works.

[I forgot to include the list before, so this is a copy just to the  
list]

After downloading 140MB of (the current!:-) source (of the binary I  
was using) -- (http://cdn.adslzone.net/pub/repos/victek/Tomato/Tomato_RAF_1.25.8515.2_Source_Code.tar.bz2 
)

I did find the .config file.  Sure enough, it contains:

CONFIG_TAR=y
CONFIG_FEATURE_TAR_CREATE=y
# CONFIG_FEATURE_TAR_AUTODETECT is not set
# CONFIG_FEATURE_TAR_FROM is not set
# CONFIG_FEATURE_TAR_OLDGNU_COMPATIBILITY is not set
CONFIG_FEATURE_TAR_OLDSUN_COMPATIBILITY=y
CONFIG_FEATURE_TAR_GNU_EXTENSIONS=y
# CONFIG_FEATURE_TAR_LONG_OPTIONS is not set
# CONFIG_FEATURE_TAR_UNAME_GNAME is not set

> If you switch off FEATURE_TAR_OLDGNU_COMPATIBILITY, then it will fail:

Thanks!  That would appear to be it.  For some reason, the author of  
that particular config decided to make those changes.  I will invite  
the coders of the various Tomato variants to fix their configs.

It appears ironic that Snow Leopard, "The World's most advanced OS",  
has switched to the POSIX tar format, which according to BusyBox  
terminology requires "OLDGNU_COMPATIBILITY".

> # ./busybox tar tf /tmp/snow.tar
> tar: corrupted octal value in tar header
>
>> Can someone please explain what is meant by "corrupted octal value",
>> in this context?
>> What is this message trying to say?
>
> The message is saying that "000644 " is not a valid octal number -
> it has trailing space.

Thanks.  I understand now.

> 00000000  73 6e 6f 77 00 00 00 00  00 00 00 00 00 00 00 00  | 
> snow............|
> 00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 00000020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 00000030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 00000040  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 00000050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 00000060  00 00 00 00 30 30 30 36  34 34 20 00 30 30 30 37  |.... 
> 000644 .0007|
> 00000070  36 35 20 00 30 30 30 30  32 34 20 00 30 30 30 30  |65 . 
> 000024 .0000|
> 00000080  30 30 30 30 30 31 35 20  31 31 32 35 35 31 36 34  |0000015  
> 11255164|
> 00000090  30 34 34 20 30 31 32 32  34 37 00 20 30 00 00 00  |044  
> 012247. 0...|
> 000000a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 000000b0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 000000c0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 000000d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 000000e0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 000000f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 00000100  00 75 73 74 61 72 00 30  30 70 65 74 65 72 00 00  |.ustar. 
> 00peter..|
> 00000110  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 00000120  00 00 00 00 00 00 00 00  00 73 74 61 66 66 00 00   
> |.........staff..|
> 00000130  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 00000140  00 00 00 00 00 00 00 00  00 30 30 30 30 30 30 20   
> |.........000000 |
> 00000150  00 30 30 30 30 30 30 20  00 00 00 00 00 00 00 00  |. 
> 000000 ........|
> 00000160  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 00000170  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 00000180  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 00000190  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 000001a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 000001b0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 000001c0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 000001d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 000001e0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 000001f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
> |................|
> 00000200  48 65 6c 6c 6f 20 57 6f  72 6c 64 21 0a 00 00 00  |Hello  
> World!....|
> ...
>
> --
> vda
>