Re: bitbake-layers: add signal hander to avoid exception

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Mon, 2017-04-10 at 17:22 +0800, Zhixiong Chi wrote:
> Fixed:
> bitbake-layers show-recipes | less
> press "q" to exit
> 
> There will be a Broken pipe error output as follows:
> "BrokenPipeError: [Errno 32] Broken pipe"
> 
> Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com>
> ---
>  bin/bitbake-layers | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/bin/bitbake-layers b/bin/bitbake-layers
> index 390ad05..d58022d 100755
> --- a/bin/bitbake-layers
> +++ b/bin/bitbake-layers
> @@ -20,6 +20,7 @@
>  # with this program; if not, write to the Free Software Foundation,
> Inc.,
>  # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
>  
> +from signal import signal, SIGPIPE, SIG_DFL

Stylistically, we tend to do:

import signal

signal.signal(signal.SIGPIPE, signal.SIG_DFL)

so I've a small preference for that. I discussed this with Paul and we
think other bitbake tools may also have this issue. We wondered if it
was possible to do something more centrally in bitbake, and/or fix the
other tools at the same time.

Any thoughts on that?

Cheers,

Richard

>  import logging
>  import os
>  import sys
> @@ -35,6 +36,7 @@ import bb.msg
>  logger = bb.msg.logger_create('bitbake-layers', sys.stdout)
>  
>  def main():
> +    signal(SIGPIPE, SIG_DFL)
>      parser = argparse.ArgumentParser(
>          description="BitBake layers utility",
>          epilog="Use %(prog)s <subcommand> --help to get help on a
> specific command",
> -- 
> 1.9.1
>