[Buildroot] [PATCH v2] sane-backends: add systemd support

[Maxime Hadjinlian]

Hello Vicente, all

On Mon, Oct 12, 2015 at 12:37 PM, Vicente Olivert Riera <
Vincent.Riera at imgtec.com> wrote:

> The content of the saned.socket and saned at .service files is based on the
> instructions of the sane-backends manual.
>
> Signed-off-by: Vicente Olivert Riera <Vincent.Riera at imgtec.com>
> ---
> Changes v1 -> v2:
>   - Install the systemd files in /usr/lib/systemd/system (Suggested by
>     Maxime Hadjinlian)
>   - Create saned user and group (Highlighted by Maxime Hadjinlian)
>   - Amend the commit log since we are not using the location for the
>     systemd files specified in the manual.
>
>  package/sane-backends/sane-backends.mk |   18 ++++++++++++++++++
>  package/sane-backends/saned.socket     |   10 ++++++++++
>  package/sane-backends/saned at .service   |   18 ++++++++++++++++++
>  3 files changed, 46 insertions(+), 0 deletions(-)
>  create mode 100644 package/sane-backends/saned.socket
>  create mode 100644 package/sane-backends/saned at .service
>
> diff --git a/package/sane-backends/sane-backends.mk
> b/package/sane-backends/sane-backends.mk
> index 0c0b5a9..39c4bb1 100644
> --- a/package/sane-backends/sane-backends.mk
> +++ b/package/sane-backends/sane-backends.mk
> @@ -14,6 +14,13 @@ SANE_BACKENDS_INSTALL_STAGING = YES
>  SANE_BACKENDS_CONF_OPTS = \
>         $(if
> $(BR2_TOOLCHAIN_HAS_THREADS),--enable-pthread,--disable-pthread)
>
> +ifeq ($(BR2_INIT_SYSTEMD),y)
> +SANE_BACKENDS_CONF_OPTS += --with-systemd
> +SANE_BACKENDS_DEPENDENCIES += systemd
> +else
> +SANE_BACKENDS_CONF_OPTS += --without-systemd
> +endif
> +
>  ifeq ($(BR2_PACKAGE_LIBUSB),y)
>  SANE_BACKENDS_DEPENDENCIES += libusb
>  SANE_BACKENDS_CONF_OPTS += --enable-libusb_1_0
> @@ -50,4 +57,15 @@ endef
>
>  SANE_BACKENDS_POST_CONFIGURE_HOOKS += SANE_BACKENDS_DISABLE_DOCS
>
> +define SANE_BACKENDS_USERS
> +       saned -1 saned -1 * /etc/sane.d - - Saned User
> +endef
> +
> +define SANE_BACKENDS_INSTALL_INIT_SYSTEMD
> +       $(INSTALL) -m 0644 -D package/sane-backends/saned.socket \
> +               $(TARGET_DIR)/usr/lib/systemd/system/saned.socket
> +       $(INSTALL) -m 0644 -D package/sane-backends/saned at .service \
> +               $(TARGET_DIR)/usr/lib/systemd/system/saned at .service
> +endef
>
You still need to create the target 'socket.target.wants' and put a symlink
from saned.socket into this new folder.

You also need to symlink the service into it's target (since it's not
defined in the .service, I would assume multi-user.target).

> +
>  $(eval $(autotools-package))
> diff --git a/package/sane-backends/saned.socket
> b/package/sane-backends/saned.socket
> new file mode 100644
> index 0000000..1aa19e7
> --- /dev/null
> +++ b/package/sane-backends/saned.socket
> @@ -0,0 +1,10 @@
> +[Unit]
> +Description=saned incoming socket
> +
> +[Socket]
> +ListenStream=6566
> +Accept=yes
> +MaxConnections=1
> +
> +[Install]
> +WantedBy=sockets.target
> diff --git a/package/sane-backends/saned at .service
> b/package/sane-backends/saned at .service
> new file mode 100644
> index 0000000..1905dbf
> --- /dev/null
> +++ b/package/sane-backends/saned at .service
> @@ -0,0 +1,18 @@
> +[Unit]
> +Description=Scanner Service
> +Requires=saned.socket
> +
> +[Service]
> +ExecStart=/usr/sbin/saned
> +User=saned
> +Group=saned
> +StandardInput=null
> +StandardOutput=syslog
> +StandardError=syslog
> +Environment=SANE_CONFIG_DIR=/etc/sane.d
> +# If you need to debug your configuration uncomment the next line and
> +# change it as appropriate to set the desired debug options
> +# Environment=SANE_DEBUG_DLL=255 SANE_DEBUG_BJNP=5
> +
> +[Install]
> +Also=saned.socket
> --
> 1.7.1
>
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