Dear sir,
I ran your python script as
#python vmlinuz-2.6.26-2-686
i got the following error
Traceback (most recent call last):
File "/mnt/disk[sda4]/root/Desktop/tmp/vmlinuz/extvmlinuz.py", line 39, in
<module>
vmlinux = open(sys.argv[2], 'wb')
IndexError: list index out of range
why is it so..
On Mon, Oct 5, 2009 at 8:56 AM, Ben Hutchings <[email protected]> wrote:
> While we still aren't providing an uncompressed vmlinux image, it is now
> possible to extract one from vmlinuz. The following Python script does
> the job; give it the filename of the compressed image followed by the
> filename for the uncompressed image.
>
> Ben.
>
> #!/usr/bin/python
>
> import struct, zlib
>
> def vmlinuz_to_image(f):
> # We can't use gzip.GzipFile because that complains if there is
> # trailing data, which is the case for ELFBoot kernel images.
> # Use zlib directly.
> zo = zlib.decompressobj(-15)
>
> # Look for gzip-deflate header and find end of it
> f.seek(0, 0)
> head = f.read(65536)
> off = head.index('\x1f\x8b\x08')
> flags = ord(head[off + 3])
> off += 10 # fixed header
> if flags & 0x04: # FEXTRA
> off += 2 + struct.unpack('<H', head[off:off+2])[0]
> if flags & 0x08: # FNAME
> off = head.index('\0', off) + 1
> if flags & 0x10: # FCOMMENT
> off = head.index('\0', off) + 1
> if flags & 0x02: # FHCRC
> off += 2
> assert not (flags & 0xe0) # reserved
>
> # Decompress following deflate blocks
> f.seek(off)
> image = zo.decompress(f.read()) + zo.flush()
>
> # Verify decompressed data against gzip trailer
> assert (struct.unpack('<LL', zo.unused_data[:8]) ==
> (zlib.crc32(image) & 0xffffffffL, len(image)))
>
> return image
>
> if __name__ == '__main__':
> import sys
> vmlinuz = open(sys.argv[1], 'rb')
> vmlinux = open(sys.argv[2], 'wb')
> vmlinux.write(vmlinuz_to_image(vmlinuz))
> ### END ###
>
> --
> Ben Hutchings
> I say we take off; nuke the site from orbit. It's the only way to be sure.
>
--
bossganesh
BOSSTeam
CDAC
