build: apply DFLT_NAME/profiles in init script

Hopefully at some point we can get rid of the --enable-datacenter switch
and just have the init script do magic.  Should already work for Cumulus
as it is.

NB: the profile name can't be baked into the package.  The whole point
is to make the package profile-agnostic;  in theory at some point the
exact same package files should work on both, say, a Cumulus switch and
a Linux software BGP DFZ router.

Signed-off-by: David Lamparter <equinox@diac24.net>

3 files changed, 36 insertions, 5 deletions

diff --git a/tools/etc/frr/daemons b/tools/etc/frr/daemons
index 79c52d30d..8bec3c5bb 100644
--- a/tools/etc/frr/daemons
+++ b/tools/etc/frr/daemons
@@ -56,6 +56,11 @@ bfdd_options="   -A 127.0.0.1"
 fabricd_options="-A 127.0.0.1"
 vrrpd_options="  -A 127.0.0.1"
 
+# configuration profile
+#
+#frr_profile="traditional"
+#frr_profile="datacenter"
+
 #
 # This is the maximum number of FD's that will be available.
 # Upon startup this is read by the control files and ulimit
diff --git a/tools/frr.in b/tools/frr.in
index a21b06752..d9816c256 100755
--- a/tools/frr.in
+++ b/tools/frr.in
@@ -21,6 +21,7 @@ VTYSH="@vtysh_bin@" # /usr/bin/vtysh
 FRR_USER="@enable_user@" # frr
 FRR_GROUP="@enable_group@" # frr
 FRR_VTY_GROUP="@enable_vty_group@" # frrvty
+FRR_DEFAULT_PROFILE="@DFLT_NAME@" # traditional / datacenter
 
 # Local Daemon selection may be done by using /etc/frr/daemons.
 # See /usr/share/doc/frr/README.Debian.gz for further information.
@@ -151,7 +152,7 @@ start()
 			--pidfile=`pidfile $dmn-$inst` \
 			--exec "$D_PATH/$dmn" \
 			-- \
-			`eval echo "$""$dmn""_options"` -n "$inst"
+			`eval echo "$""$dmn""_options"` $frr_global_options -n "$inst"
 	else
 		if ! check_daemon $dmn; then
 			echo -n " (binary does not exist)"
@@ -164,14 +165,14 @@ start()
 				--pidfile=`pidfile $dmn` \
 				--exec "$valgrind" \
 				-- --trace-children=no --leak-check=full --log-file=/var/log/frr/$dmn-valgrind.log $D_PATH/$dmn \
-				`eval echo "$""$dmn""_options"`
+				`eval echo "$""$dmn""_options"` $frr_global_options
 		else
 			${SSD} \
 				--start \
 				--pidfile=`pidfile $dmn` \
 				--exec "$D_PATH/$dmn" \
 				-- \
-				`eval echo "$""$dmn""_options"`
+				`eval echo "$""$dmn""_options"` $frr_global_options
 		fi
 	fi
 
@@ -188,7 +189,7 @@ start()
 			--pidfile=`pidfile staticd` \
 			--exec "$D_PATH/staticd" \
 			-- \
-			`eval echo "$"staticd"_options"`
+			`eval echo "$"staticd"_options"` $frr_global_options
 	fi
 }
 
@@ -511,6 +512,18 @@ fi
 # Read configuration variable file if it is present
 [ -r /etc/default/frr ] && . /etc/default/frr
 
+if test -z "$frr_profile"; then
+	# try to autodetect config profile
+	if test -d /etc/cumulus; then
+		frr_profile=datacenter
+	# elif test ...; then
+	# -- add your distro/system here
+	elif test -n "$FRR_DEFAULT_PROFILE"; then
+		frr_profile="$FRR_DEFAULT_PROFILE"
+	fi
+fi
+test -n "$frr_profile" && frr_global_options="$frr_global_options -F $frr_profile"
+
 MAX_INSTANCES=${MAX_INSTANCES:=5}
 
 # Set priority of un-startable daemons to 'no' and substitute 'yes' to '0'
diff --git a/tools/frrcommon.sh.in b/tools/frrcommon.sh.in
index 3fc38d4be..0dfdfd0ef 100644
--- a/tools/frrcommon.sh.in
+++ b/tools/frrcommon.sh.in
@@ -24,6 +24,7 @@ VTYSH="@vtysh_bin@" # /usr/bin/vtysh
 FRR_USER="@enable_user@" # frr
 FRR_GROUP="@enable_group@" # frr
 FRR_VTY_GROUP="@enable_vty_group@" # frrvty
+FRR_DEFAULT_PROFILE="@DFLT_NAME@" # traditional / datacenter
 
 # ORDER MATTERS FOR $DAEMONS!
 # - keep zebra first
@@ -151,7 +152,7 @@ daemon_start() {
 	instopt="${inst:+-n $inst}"
 	eval args="\$${daemon}_options"
 
-	if eval "$all_wrap $wrap $bin -d $instopt $args"; then
+	if eval "$all_wrap $wrap $bin -d $frr_global_options $instopt $args"; then
 		log_success_msg "Started $dmninst"
 		vtysh_b "$daemon"
 	else
@@ -298,6 +299,18 @@ if { declare -p watchfrr_options 2>/dev/null || true; } | grep -q '^declare \-a'
 	unset watchfrr_options
 fi
 
+if test -z "$frr_profile"; then
+	# try to autodetect config profile
+	if test -d /etc/cumulus; then
+		frr_profile=datacenter
+	# elif test ...; then
+	# -- add your distro/system here
+	elif test -n "$FRR_DEFAULT_PROFILE"; then
+		frr_profile="$FRR_DEFAULT_PROFILE"
+	fi
+fi
+test -n "$frr_profile" && frr_global_options="$frr_global_options -F $frr_profile"
+
 #
 # other defaults and dispatch
 #