6 files changed, 163 insertions, 0 deletions
diff --git a/docs/interfaces.md b/docs/interfaces.md
index 067eab47c6..8db0ea455c 100644
--- a/docs/interfaces.md
+++ b/docs/interfaces.md
@@ -263,6 +263,13 @@ printing.
 
 * Auto-Connect: no
 
+### dcdbas-control
+
+Can interact with the Dell Systems Management Base Driver which provides
+a sysfs interface for systems management software such as Dell OpenManage
+to perform system management interrupts and host control actions (system
+power cycle or power off after OS shutdown) on certain Dell systems.
+
 ### docker
 
 Can access snaps providing the docker interface which gives privileged access
diff --git a/interfaces/builtin/all.go b/interfaces/builtin/all.go
index abcd891e9c..e5be9480fc 100644
--- a/interfaces/builtin/all.go
+++ b/interfaces/builtin/all.go
@@ -44,6 +44,7 @@ var allInterfaces = []interfaces.Interface{
 	&PulseAudioInterface{},
 	&UDisks2Interface{},
 	&FwupdInterface{},
+	NewDcdbasControlInterface(),
 	NewFirewallControlInterface(),
 	NewGsettingsInterface(),
 	NewHardwareObserveInterface(),
diff --git a/interfaces/builtin/basedeclaration.go b/interfaces/builtin/basedeclaration.go
index d0a99e796b..28561bfc82 100644
--- a/interfaces/builtin/basedeclaration.go
+++ b/interfaces/builtin/basedeclaration.go
@@ -192,6 +192,11 @@ slots:
 slot-snap-type:
 - core
 deny-auto-connection: true
+ dcdbas-control:
+ allow-installation:
+ slot-snap-type:
+ - core
+ deny-auto-connection: true
 docker:
 allow-installation: false
 deny-connection: true
diff --git a/interfaces/builtin/dcdbas_control.go b/interfaces/builtin/dcdbas_control.go
new file mode 100644
index 0000000000..1e8d21b3bd
--- /dev/null
+++ b/interfaces/builtin/dcdbas_control.go
@@ -0,0 +1,57 @@
+// -*- Mode: Go; indent-tabs-mode: t -*-
+
+/*
+ * Copyright (C) 2016 Canonical Ltd
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package builtin
+
+import (
+	"github.com/snapcore/snapd/interfaces"
+)
+
+// https://www.kernel.org/doc/Documentation/dcdbas.txt
+const dcdbasControlConnectedPlugAppArmor = `
+# Description: This interface allows communication with Dell Systems Management Base Driver
+# which provides a sysfs interface for systems management software such as Dell OpenManage
+# to perform system management interrupts and host control actions (system power cycle or
+# power off after OS shutdown) on certain Dell systems. The Dell libsmbios project aims
+# towards providing access to as much BIOS information as possible.
+#
+# See http://linux.dell.com/libsmbios/main/ for more information about the libsmbios project.
+
+# Usage: reserved
+
+# entries pertaining to System Management Interrupts (SMI)
+/sys/devices/platform/dcdbas/smi_data rw,
+/sys/devices/platform/dcdbas/smi_data_buf_phys_addr rw,
+/sys/devices/platform/dcdbas/smi_data_buf_size rw,
+/sys/devices/platform/dcdbas/smi_request rw,
+
+# entries pertaining to Host Control Action
+/sys/devices/platform/dcdbas/host_control_action rw,
+/sys/devices/platform/dcdbas/host_control_smi_type rw,
+/sys/devices/platform/dcdbas/host_control_on_shutdown rw,
+`
+
+// NewHardwareObserveInterface returns a new "dcdbas-control" interface.
+func NewDcdbasControlInterface() interfaces.Interface {
+	return &commonInterface{
+	name: "dcdbas-control",
+	connectedPlugAppArmor: dcdbasControlConnectedPlugAppArmor,
+	reservedForOS: true,
+	}
+}
diff --git a/interfaces/builtin/dcdbas_control_test.go b/interfaces/builtin/dcdbas_control_test.go
new file mode 100644
index 0000000000..a6f8bed54c
--- /dev/null
+++ b/interfaces/builtin/dcdbas_control_test.go
@@ -0,0 +1,92 @@
+// -*- Mode: Go; indent-tabs-mode: t -*-
+
+/*
+ * Copyright (C) 2016 Canonical Ltd
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package builtin_test
+
+import (
+	. "gopkg.in/check.v1"
+
+	"github.com/snapcore/snapd/interfaces"
+	"github.com/snapcore/snapd/interfaces/builtin"
+	"github.com/snapcore/snapd/snap"
+	"github.com/snapcore/snapd/testutil"
+)
+
+type DcdbasControlInterfaceSuite struct {
+	iface interfaces.Interface
+	slot *interfaces.Slot
+	plug *interfaces.Plug
+}
+
+var _ = Suite(&DcdbasControlInterfaceSuite{
+	iface: builtin.NewDcdbasControlInterface(),
+	slot: &interfaces.Slot{
+	SlotInfo: &snap.SlotInfo{
+	Snap: &snap.Info{SuggestedName: "core", Type: snap.TypeOS},
+	Name: "dcdbas-control",
+	Interface: "dcdbas-control",
+	},
+	},
+	plug: &interfaces.Plug{
+	PlugInfo: &snap.PlugInfo{
+	Snap: &snap.Info{SuggestedName: "other"},
+	Name: "dcdbas-control",
+	Interface: "dcdbas-control",
+	},
+	},
+})
+
+func (s *DcdbasControlInterfaceSuite) TestName(c *C) {
+	c.Assert(s.iface.Name(), Equals, "dcdbas-control")
+}
+
+func (s *DcdbasControlInterfaceSuite) TestSanitizeSlot(c *C) {
+	err := s.iface.SanitizeSlot(s.slot)
+	c.Assert(err, IsNil)
+	err = s.iface.SanitizeSlot(&interfaces.Slot{SlotInfo: &snap.SlotInfo{
+	Snap: &snap.Info{SuggestedName: "some-snap"},
+	Name: "dcdbas-control",
+	Interface: "dcdbas-control",
+	}})
+	c.Assert(err, ErrorMatches, "dcdbas-control slots are reserved for the operating system snap")
+}
+
+func (s *DcdbasControlInterfaceSuite) TestSanitizePlug(c *C) {
+	err := s.iface.SanitizePlug(s.plug)
+	c.Assert(err, IsNil)
+}
+
+func (s *DcdbasControlInterfaceSuite) TestSanitizeIncorrectInterface(c *C) {
+	c.Assert(func() { s.iface.SanitizeSlot(&interfaces.Slot{SlotInfo: &snap.SlotInfo{Interface: "other"}}) },
+	PanicMatches, `slot is not of interface "dcdbas-control"`)
+	c.Assert(func() { s.iface.SanitizePlug(&interfaces.Plug{PlugInfo: &snap.PlugInfo{Interface: "other"}}) },
+	PanicMatches, `plug is not of interface "dcdbas-control"`)
+}
+
+func (s *DcdbasControlInterfaceSuite) TestUsedSecuritySystems(c *C) {
+	// connected plugs have a non-nil security snippet for apparmor
+	snippet, err := s.iface.ConnectedPlugSnippet(s.plug, s.slot, interfaces.SecurityAppArmor)
+	c.Assert(err, IsNil)
+	c.Assert(snippet, Not(IsNil))
+	c.Assert(string(snippet), testutil.Contains, `/dcdbas/smi_data`)
+}
+
+func (s *DcdbasControlInterfaceSuite) TestLegacyAutoConnect(c *C) {
+	c.Check(s.iface.LegacyAutoConnect(), Equals, false)
+}
diff --git a/snap/implicit.go b/snap/implicit.go
index 17c0272397..c8025068ab 100644
--- a/snap/implicit.go
+++ b/snap/implicit.go
@@ -29,6 +29,7 @@ import (
 
 var implicitSlots = []string{
 	"bluetooth-control",
+	"dcdbas-control",
 	"docker-support",
 	"firewall-control",
 	"fuse-support",