[Buildroot] [PATCH 1/2] package/netopeer2: set SYSREPO_SHM_PREFIX and cleanup shm files after installation

[Yann E. MORIN <yann.morin.1998@free.fr>]

Heiko, All,

On 2021-02-06 11:57 +0100, Heiko Thiery spake thusly:
> On install step the host tool syrepoctl is used to install some YANG
> modules. Unfortunatly syrepoctl creates some files in /dev/shm folder and
> does not cleanup afterwards. This files can be incompatible depending on
> the used sysrepo version. This causes autobuilder failures when updating
> the package [1].
> 
> To make sure we can remove this leftovers of sysrepoctl we specify a
> build specific SYSREPO_SHM_PREFIX. With this the files can deleted safely
> after installation is completed. This also ensures that concurrent
> parallel builds will not affected mutualy.
> 
> Fixes:
>  [1] http://autobuild.buildroot.net/results/6e559c4f98b7ed93d7b5af638264e907492a6532/
> 
> Co-Developed-by: Yann E. MORIN <yann.morin.1998@free.fr>
> Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>

Series of two applied to master, thanks.

I inverted the order in which the two patches are applied, because I
found it to be more logical: we need host-sysrepo, and then we can fix
its usage...

As for the now-second patch, I did what I said in my previous review,
plus a few litle other cleanuos and additions:

  - also use the package name as discriminant
  - expand commit log accordingly
  - rename the variable to start with the package name
  - explain why we clean up before as well

Thanks! :-)

Regards,
Yann E. MORIN.

> ---
>  package/netopeer2/netopeer2.mk | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/package/netopeer2/netopeer2.mk b/package/netopeer2/netopeer2.mk
> index bc02e0dc93..af30d8417a 100644
> --- a/package/netopeer2/netopeer2.mk
> +++ b/package/netopeer2/netopeer2.mk
> @@ -13,9 +13,23 @@ NETOPEER2_DEPENDENCIES = libnetconf2 libyang sysrepo
>  
>  NETOPEER2_CONF_OPTS = -DBUILD_CLI=$(if $(BR2_PACKAGE_NETOPEER2_CLI),ON,OFF)
>  
> +# Set a build specific SYSREPO_SHM_PREFIX to ensure we can safely delete the
> +# files. This also ensures that concurrent parallel builds will not be
> +# affected mutualy.
> +SYSREPO_SHM_PREFIX = sr_buildroot$(subst /,_,$(CONFIG_DIR))
> +NETOPEER2_MAKE_ENV = SYSREPO_SHM_PREFIX=$(SYSREPO_SHM_PREFIX)
> +
>  define NETOPEER2_INSTALL_INIT_SYSV
>  	$(INSTALL) -m 755 -D package/netopeer2/S52netopeer2 \
>  		$(TARGET_DIR)/etc/init.d/S52netopeer2
>  endef
>  
> +# The host sysrepo used to install the netopeer2 modules will leave
> +# its shared memory files lingering about. Clean up in it's stead...
> +define NETOPEER2_CLEANUP
> +   rm -f /dev/shm/$(SYSREPO_SHM_PREFIX)*
> +endef
> +NETOPEER2_PRE_INSTALL_TARGET_HOOKS += NETOPEER2_CLEANUP
> +NETOPEER2_POST_INSTALL_TARGET_HOOKS += NETOPEER2_CLEANUP
> +
>  $(eval $(cmake-package))
> -- 
> 2.20.1
> 
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