dropbear: fix key generation when systemd is in use and rootfs is readonly

(From OE-Core rev: 7e13fc603aa86219bf15e355ca9ea9275308cca5)

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 9 insertions, 3 deletions

diff --git a/meta/recipes-core/dropbear/dropbear/dropbear@.service b/meta/recipes-core/dropbear/dropbear/dropbear@.service
index 6fe9942090..b420bcddcb 100644
--- a/meta/recipes-core/dropbear/dropbear/dropbear@.service
+++ b/meta/recipes-core/dropbear/dropbear/dropbear@.service
@@ -4,8 +4,9 @@ Wants=dropbearkey.service
 After=syslog.target dropbearkey.service
 
 [Service]
+Environment="DROPBEAR_RSAKEY_DIR=/etc/dropbear"
 EnvironmentFile=-/etc/default/dropbear
-ExecStart=-@SBINDIR@/dropbear -i -r /etc/dropbear/dropbear_rsa_host_key $DROPBEAR_EXTRA_ARGS
+ExecStart=-@SBINDIR@/dropbear -i -r ${DROPBEAR_RSAKEY_DIR}/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
index ccc21d5cca..c49053d57c 100644
--- a/meta/recipes-core/dropbear/dropbear/dropbearkey.service
+++ b/meta/recipes-core/dropbear/dropbear/dropbearkey.service
@@ -1,8 +1,13 @@
 [Unit]
 Description=SSH Key Generation
-ConditionPathExists=|!/etc/dropbear/dropbear_rsa_host_key
+RequiresMountsFor=/var /var/lib
+ConditionPathExists=!/etc/dropbear/dropbear_rsa_host_key
+ConditionPathExists=!/var/lib/dropbear/dropbear_rsa_host_key
 
 [Service]
+Environment="DROPBEAR_RSAKEY_DIR=/etc/dropbear"
+EnvironmentFile=-/etc/default/dropbear
 Type=oneshot
-ExecStart=@SBINDIR@/dropbearkey -t rsa -f /etc/dropbear/dropbear_rsa_host_key
+ExecStart=@BASE_BINDIR@/mkdir -p ${DROPBEAR_RSAKEY_DIR}
+ExecStart=@SBINDIR@/dropbearkey -t rsa -f ${DROPBEAR_RSAKEY_DIR}/dropbear_rsa_host_key
 RemainAfterExit=yes