Re: [PATCH v2] headers_install: check exit status of unifdef

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On Tue, 23 Nov 2010 17:41:36 -0500 Mike Frysinger wrote:

> If unifdef fails for any reason (like segfaulting), we should be aborting
> the install steps.  So check its exit status in this unlikely scenario.
> 
> Reported-by: Diego Elio Pettenò <flameeyes@xxxxxxxxxx>
> Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx>
> ---
> v2
> 	- apparently exit status of 1 is normal for unifdef, so need to
> 	  handle that too
> 
>  scripts/headers_install.pl |    7 +++++++
>  1 files changed, 7 insertions(+), 0 deletions(-)
> 
> diff --git a/scripts/headers_install.pl b/scripts/headers_install.pl
> index 4ca3be3..59ad768 100644
> --- a/scripts/headers_install.pl
> +++ b/scripts/headers_install.pl
> @@ -45,6 +45,13 @@ foreach my $file (@files) {
>  	close $in;
>  
>  	system $unifdef . " $tmpfile > $installdir/$file";
> +	# unifdef will exit 0 on success, and will exit 1 when the
> +	# file was processed successfully but no changes were made,
> +	# so abort only when it's higher than that.
> +	my $e = $? >> 8;
> +	if ($e > 2) {

	if ($e > 1) {

??

> +		die "$tmpfile: $!\n";
> +	}
>  	unlink $tmpfile;
>  }
>  exit 0;
> -- 


---
~Randy
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