script to dump RO and RW VPDs into /var/log/vpd-log.conf.

script to dump RO and RW VPDs into /var/log/vpd-log.conf.

This work originally is done in src/platform/init/vpd-log.conf.
But somehow OOBE OEM customization code needs to read the log file in the
begin of OOBE, we extract this function into a standalone script for
chromeos_startup to call.

More CLs will follow up this change.

Change-Id: I107a2a6c44ec6b4dee4de2c1b8b45cca846dd6fe

BUG=chromium-os:12355
TEST=Tested on machine.

Committed: http://chrome-svn/viewvc/chromeos?view=rev&revision=c2452fc

[Dmitry Polukhin, 2011-03-11 07:56:51]

http://codereview.chromium.org/6676022/diff/1/util/dump_vpd_log
File util/dump_vpd_log (right):

http://codereview.chromium.org/6676022/diff/1/util/dump_vpd_log#newcode22
util/dump_vpd_log:22: fi >>$VPD_2_0
What about making file creation atomic? I.e. redirect stdout to tmpfile and mv
it to destination file after that. In this case if file is missing Chrome will
be able wait for it. But if the file exists it has full output not a part of it.

[Louis, 2011-03-11 08:56:17]

http://codereview.chromium.org/6676022/diff/1/util/dump_vpd_log
File util/dump_vpd_log (right):

http://codereview.chromium.org/6676022/diff/1/util/dump_vpd_log#newcode22
util/dump_vpd_log:22: fi >>$VPD_2_0
Good point. Please see the new version.

On 2011/03/11 07:56:51, Dmitry Polukhin wrote:
> What about making file creation atomic? I.e. redirect stdout to tmpfile and mv
> it to destination file after that. In this case if file is missing Chrome will
> be able wait for it. But if the file exists it has full output not a part of
it.

[Dmitry Polukhin, 2011-03-11 09:54:01]

LGTM

But please check that file moved from /tmp will have proper access rights.

[Louis, 2011-03-11 10:02:39]

Thanks. Added chmod go-stwx $TMP.

On 2011/03/11 09:54:01, Dmitry Polukhin wrote:
> LGTM
> 
> But please check that file moved from /tmp will have proper access rights.

[Dmitry Polukhin, 2011-03-11 10:17:28]

LGTM

[zel, 2011-03-14 19:22:45]

LGTM