[yocto] stupid question about post-installation scripts

[Bryan Evenson]

Robert,

> -----Original Message-----
> From: Robert P. J. Day [mailto:rpjday at crashcourse.ca]
> Sent: Monday, November 25, 2013 12:29 PM
> To: Bryan Evenson
> Cc: Rifenbark, Scott M; Yocto discussion list
> Subject: RE: stupid question about post-installation scripts
> 
> On Mon, 25 Nov 2013, Bryan Evenson wrote:
> 
> > Robert,
> >
> > That's how it works in my experience.  I have some packages for my
> > system that have a postinst piece that needs to run during image
> > creation, and other pieces that need to run only on a package
> upgrade.
> > By checking whether "x${D}" = "${D}", I am filtering out whether the
> > postinst script is running during image creation or on the actual
> > hardware.  Been working great so far.
> 
>   right, but what i was trying to clarify is (and i think you answer
> it) that postint scripts will be invoked *both* at image creation time
> and boot time, and it's your responsibility to identify which parts run
> at which times.

Everyone else please correct me if I'm wrong, but I believe that the package management tool checks if postinst completed successfully.  The postinst script for a package can run either 1) during image creation, 2) during bootup or 3) during package installation/upgrade.  If postinst for a package has not yet completed successfully, then the package management tool will try to run the postinst script for that package at the next triggerable event. 

-Bryan 

> 
> rday
> 
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> Robert P. J. Day                                 Ottawa, Ontario,
> CANADA
>                         http://crashcourse.ca
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