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From bb7dd0b04a6e89674100476eed0bbd05c6a4cbd8 Mon Sep 17 00:00:00 2001
From: Daniel Mack <zonque@gmail.com>
Date: Mon, 18 Aug 2014 19:55:32 +0200
Subject: [PATCH] bus: add kdbus endpoint types
Add types to describe endpoints and associated policy entries,
and add a BusEndpoint instace to ExecContext.
---
Makefile.am | 2 ++
src/core/bus-endpoint.c | 90 +++++++++++++++++++++++++++++++++++++++++++++++++
src/core/bus-endpoint.h | 42 +++++++++++++++++++++++
src/core/execute.c | 3 ++
src/core/execute.h | 4 +++
5 files changed, 141 insertions(+)
create mode 100644 src/core/bus-endpoint.c
create mode 100644 src/core/bus-endpoint.h
diff --git a/Makefile.am b/Makefile.am
index 68a78963c1..35c877fe2a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1028,6 +1028,8 @@ libsystemd_core_la_SOURCES = \
src/core/busname.h \
src/core/bus-common.c \
src/core/bus-common.h \
+ src/core/bus-endpoint.c \
+ src/core/bus-endpoint.h \
src/core/target.c \
src/core/target.h \
src/core/snapshot.c \
diff --git a/src/core/bus-endpoint.c b/src/core/bus-endpoint.c
new file mode 100644
index 0000000000..8d11974db4
--- /dev/null
+++ b/src/core/bus-endpoint.c
@@ -0,0 +1,90 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Daniel Mack
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdlib.h>
+
+#include "bus-endpoint.h"
+
+int bus_endpoint_new(BusEndpoint **ep)
+{
+ assert(ep);
+
+ *ep = new0(BusEndpoint, 1);
+ if (!*ep)
+ return -ENOMEM;
+
+ return 0;
+}
+
+int bus_endpoint_add_policy(BusEndpoint *ep, const char *name, BusPolicyAccess access)
+{
+ _cleanup_free_ BusEndpointPolicy *po;
+ _cleanup_free_ char *key;
+ int r;
+
+ assert(ep);
+ assert(name);
+ assert(access > _BUS_POLICY_ACCESS_INVALID && access < _BUS_POLICY_ACCESS_MAX);
+
+ /* check if we already have this name in the policy list. If we do, see if the new access level
+ * is higher than the exising one, and upgrade the entry in that case. Otherwise, do nothing.
+ */
+
+ if (ep->policy_hash) {
+ po = hashmap_get(ep->policy_hash, name);
+ if (po) {
+ if (po->access < access)
+ po->access = access;
+
+ return 0;
+ }
+ } else {
+ ep->policy_hash = hashmap_new(string_hash_func, string_compare_func);
+ if (!ep->policy_hash)
+ return -ENOMEM;
+ }
+
+ po = new0(BusEndpointPolicy, 1);
+ if (!po)
+ return -ENOMEM;
+
+ key = strdup(name);
+ if (!key)
+ return -ENOMEM;
+
+ po->name = key;
+ po->access = access;
+
+ r = hashmap_put(ep->policy_hash, key, po);
+ if (r < 0)
+ return r;
+
+ po = NULL;
+ key = NULL;
+ return 0;
+}
+
+void bus_endpoint_free(BusEndpoint *endpoint)
+{
+ if (!endpoint)
+ return;
+
+ hashmap_free_free_free(endpoint->policy_hash);
+ free(endpoint);
+}
diff --git a/src/core/bus-endpoint.h b/src/core/bus-endpoint.h
new file mode 100644
index 0000000000..2c5415f34e
--- /dev/null
+++ b/src/core/bus-endpoint.h
@@ -0,0 +1,42 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Daniel Mack
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+typedef struct BusEndpoint BusEndpoint;
+typedef struct BusEndpointPolicy BusEndpointPolicy;
+
+#include "bus-common.h"
+#include "hashmap.h"
+
+struct BusEndpointPolicy {
+ char *name;
+ BusPolicyAccess access;
+};
+
+struct BusEndpoint {
+ Hashmap *policy_hash;
+};
+
+int bus_endpoint_new(BusEndpoint **ep);
+void bus_endpoint_free(BusEndpoint *endpoint);
+
+int bus_endpoint_add_policy(BusEndpoint *ep, const char *name, BusPolicyAccess access);
diff --git a/src/core/execute.c b/src/core/execute.c
index 0a5914759f..a88e1b1953 100644
--- a/src/core/execute.c
+++ b/src/core/execute.c
@@ -1908,6 +1908,9 @@ void exec_context_done(ExecContext *c) {
strv_free(c->runtime_directory);
c->runtime_directory = NULL;
+
+ bus_endpoint_free(c->bus_endpoint);
+ c->bus_endpoint = NULL;
}
int exec_context_destroy_runtime_directory(ExecContext *c, const char *runtime_prefix) {
diff --git a/src/core/execute.h b/src/core/execute.h
index f31f0c9f27..e3cebfd72c 100644
--- a/src/core/execute.h
+++ b/src/core/execute.h
@@ -41,6 +41,7 @@ typedef struct ExecParameters ExecParameters;
#include "fdset.h"
#include "missing.h"
#include "namespace.h"
+#include "bus-endpoint.h"
typedef enum ExecInput {
EXEC_INPUT_NULL,
@@ -188,6 +189,9 @@ struct ExecContext {
bool ioprio_set:1;
bool cpu_sched_set:1;
bool no_new_privileges_set:1;
+
+ /* custom dbus enpoint */
+ BusEndpoint *bus_endpoint;
};
#include "cgroup.h"
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