postfix: create or update aliases.db when using systemd

aliases.db should be created by postinstall script, but failed since
queue_directory is not includes root dir ${D}:
    ------
    |newaliases: fatal: chdir /var/spool/postfix: No such file or directory
    ------
initscript will recall newaliases before start postfix daemon, the similar
method, which run aliasesdb to create aliases.db when using systemd, is
introduced to fix this issue.

Signed-off-by: Roy.Li <rongqing.li@windriver.com>
Signed-off-by: Joe MacDonald <joe_macdonald@mentor.com>

2 files changed, 21 insertions, 0 deletions

diff --git a/meta-networking/recipes-daemons/postfix/files/aliasesdb b/meta-networking/recipes-daemons/postfix/files/aliasesdb
new file mode 100755
index 0000000000..855a64f705
--- /dev/null
+++ b/meta-networking/recipes-daemons/postfix/files/aliasesdb
@@ -0,0 +1,20 @@
+#!/bin/sh
+
+ALIASESDB_STAMP=/var/lib/misc/postfix.aliasesdb-stamp
+
+make_aliasesdb() {
+        if [ "$(/usr/sbin/postconf -h alias_database)" = "hash:/etc/aliases" ]
+        then
+                # /etc/aliases.db may be used by other MTA, make sure nothing
+                # has touched it since our last newaliases call
+                [ /etc/aliases -nt /etc/aliases.db ] ||
+                        [ "$ALIASESDB_STAMP" -nt /etc/aliases.db ] ||
+                        [ "$ALIASESDB_STAMP" -ot /etc/aliases.db ] || return 0
+                /usr/bin/newaliases
+                touch -r /etc/aliases.db "$ALIASESDB_STAMP"
+        else
+                /usr/bin/newaliases
+        fi
+}
+
+make_aliasesdb
diff --git a/meta-networking/recipes-daemons/postfix/files/postfix.service b/meta-networking/recipes-daemons/postfix/files/postfix.service
index 6ea9214780..c781038d88 100644
--- a/meta-networking/recipes-daemons/postfix/files/postfix.service
+++ b/meta-networking/recipes-daemons/postfix/files/postfix.service
@@ -6,6 +6,7 @@ Conflicts=sendmail.service exim.service
 [Service]
 Type=forking
 PIDFile=/var/spool/postfix/pid/master.pid
+ExecStartPre=-/usr/libexec/postfix/aliasesdb
 ExecStart=/usr/sbin/postfix start
 ExecReload=/usr/sbin/postfix reload
 ExecStop=/usr/sbin/postfix stop