Re: [PATCH 6/6] recipes-app/example-custom: add example on how to use dpkg-custom

[Alexander Smirnov <asmirnov@ilbers.de>]

On 08/30/2017 10:03 PM, Henning Schild wrote:
> Issue:
> It might not be clear to a user how to make use of the class
> dpkg-custom.
> 
> Change:
> Add an example that demonstrates some features.
> 
> Impact:
> This patch does not change the behaviour of Isar. It addresses the issue
> partially, documentation would also be useful.
> 
> Signed-off-by: Henning Schild <henning.schild@siemens.com>
> ---
>   .../example-custom/example-custom_0.1.bb           | 35 ++++++++++++++++++++++
>   meta-isar/recipes-app/example-custom/files/README  |  1 +
>   .../recipes-app/example-custom/files/postinst      | 16 ++++++++++
>   3 files changed, 52 insertions(+)
>   create mode 100644 meta-isar/recipes-app/example-custom/example-custom_0.1.bb
>   create mode 100644 meta-isar/recipes-app/example-custom/files/README
>   create mode 100644 meta-isar/recipes-app/example-custom/files/postinst
> 
> diff --git a/meta-isar/recipes-app/example-custom/example-custom_0.1.bb b/meta-isar/recipes-app/example-custom/example-custom_0.1.bb
> new file mode 100644
> index 0000000..efa813e
> --- /dev/null
> +++ b/meta-isar/recipes-app/example-custom/example-custom_0.1.bb
> @@ -0,0 +1,35 @@
> +# Sample application using dpkg-custom, which turns a folder (${D}) of
> +# files into a .deb
> +#
> +# This software is a part of ISAR.
> +
> +DESCRIPTION = "Sample application for ISAR"
> +MAINTAINER = "Your name here <you@domain.com>"
> +DEBIAN_DEPENDS = "apt"
> +
> +SRC_URI = "file://README \
> +	   file://postinst"
> +
> +inherit dpkg-custom
> +
> +do_populate_package() {
> +	bbnote "Creating ${PN} binary"
> +	echo "#!/bin/sh" > ${WORKDIR}/${PN}
> +	echo "echo Hello ISAR! ${PN}_${PV}" >> ${WORKDIR}/${PN}
> +
> +	bbnote "Putting ${PN} into package"
> +	install -v -d ${D}/usr/local/bin/
> +	install -v -m 755 ${WORKDIR}/${PN} ${D}/usr/local/bin/${PN}
> +
> +	bbnote "Now copy ${FILESDIR}/README into package"
> +	install -v -d ${D}/usr/local/doc/
> +	install -v -m 644 ${WORKDIR}/README ${D}/usr/local/doc/README-${P}
> +
> +	bbnote "Now for a debian hook, see dpkg-deb"
> +	install -v -m 755 ${WORKDIR}/postinst ${D}/DEBIAN/postinst
> +
> +	bbnote "Now for a fake config file"
> +	echo "# empty config file" > ${WORKDIR}/${PN}.conf
> +	install -v -d ${D}/usr/local/etc/
> +	install -v -m 644 ${WORKDIR}/${PN}.conf ${D}/usr/local/etc/${PN}.conf
> +}
> diff --git a/meta-isar/recipes-app/example-custom/files/README b/meta-isar/recipes-app/example-custom/files/README
> new file mode 100644
> index 0000000..6e2ce0f
> --- /dev/null
> +++ b/meta-isar/recipes-app/example-custom/files/README
> @@ -0,0 +1 @@
> +This is an example file that we get from FILESDIR in recipe.
> diff --git a/meta-isar/recipes-app/example-custom/files/postinst b/meta-isar/recipes-app/example-custom/files/postinst
> new file mode 100644
> index 0000000..a28afa3
> --- /dev/null
> +++ b/meta-isar/recipes-app/example-custom/files/postinst
> @@ -0,0 +1,16 @@
> +#!/bin/sh
> +
> +set -e
> +
> +if ! getent group isar >/dev/null; then
> +	addgroup --quiet --system isar
> +fi
> +
> +if ! getent passwd isar >/dev/null; then
> +	useradd --system --gid isar --create-home \
> +		--home /var/lib/isar --no-user-group \
> +		--comment "My isar user" \
> +		isar
> +fi
> +
> +chown -R isar:isar /var/lib/isar
> 

That's a good demo scenario. But probably it makes sense to demonstrate 
it on real use case, for example set default password for root. This 
anyway should be done, probably it's a good time :-)

-- 
With best regards,
Alexander Smirnov