dropbear: add systemd unit files

This patch mainly comes from meta-systemd with a few modifications.
The purpose is to get rid of the LSB init scripts in systemd images.

[YOCTO #4420]

(From OE-Core rev: 5d90c5ebdb899b2951c97a94ff57867c1e491c15)

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

3 files changed, 29 insertions, 0 deletions

diff --git a/meta/recipes-core/dropbear/dropbear/dropbear.socket b/meta/recipes-core/dropbear/dropbear/dropbear.socket
new file mode 100644
index 0000000000..e5c61b755e
--- /dev/null
+++ b/meta/recipes-core/dropbear/dropbear/dropbear.socket
@@ -0,0 +1,10 @@
+[Unit]
+Conflicts=dropbear.service
+
+[Socket]
+ListenStream=22
+Accept=yes
+
+[Install]
+WantedBy=sockets.target
+Also=dropbearkey.service
diff --git a/meta/recipes-core/dropbear/dropbear/dropbear@.service b/meta/recipes-core/dropbear/dropbear/dropbear@.service
new file mode 100644
index 0000000000..6fe9942090
--- /dev/null
+++ b/meta/recipes-core/dropbear/dropbear/dropbear@.service
@@ -0,0 +1,11 @@
+[Unit]
+Description=SSH Per-Connection Server
+Wants=dropbearkey.service
+After=syslog.target dropbearkey.service
+
+[Service]
+EnvironmentFile=-/etc/default/dropbear
+ExecStart=-@SBINDIR@/dropbear -i -r /etc/dropbear/dropbear_rsa_host_key $DROPBEAR_EXTRA_ARGS
+ExecReload=@BASE_BINDIR@/kill -HUP $MAINPID
+StandardInput=socket
+KillMode=process
diff --git a/meta/recipes-core/dropbear/dropbear/dropbearkey.service b/meta/recipes-core/dropbear/dropbear/dropbearkey.service
new file mode 100644
index 0000000000..ccc21d5cca
--- /dev/null
+++ b/meta/recipes-core/dropbear/dropbear/dropbearkey.service
@@ -0,0 +1,8 @@
+[Unit]
+Description=SSH Key Generation
+ConditionPathExists=|!/etc/dropbear/dropbear_rsa_host_key
+
+[Service]
+Type=oneshot
+ExecStart=@SBINDIR@/dropbearkey -t rsa -f /etc/dropbear/dropbear_rsa_host_key
+RemainAfterExit=yes