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authorDaniel Mack <zonque@gmail.com>2014-03-07 17:29:01 +0100
committerDaniel Mack <zonque@gmail.com>2014-03-07 19:14:05 +0100
commit1683342af1fc85e75ba21264bbcedc26aef0fa39 (patch)
tree13cc448ac5d6fbf2e5646495ed530fc41fb12f71 /src/libsystemd/sd-bus
parentf7c7cd03d1e9a9a4bb6925fb64d8423f4a6a2fdc (diff)
sd-bus: add support for policy upload on activator connections
Activator connections may upload policy when registering to the bus. This patch contains code to translate between BusNamePolicy objects and the kdbus specific items.
Diffstat (limited to 'src/libsystemd/sd-bus')
-rw-r--r--src/libsystemd/sd-bus/bus-kernel.c65
-rw-r--r--src/libsystemd/sd-bus/bus-kernel.h3
2 files changed, 62 insertions, 6 deletions
diff --git a/src/libsystemd/sd-bus/bus-kernel.c b/src/libsystemd/sd-bus/bus-kernel.c
index 3627411314..2a1b0b424a 100644
--- a/src/libsystemd/sd-bus/bus-kernel.c
+++ b/src/libsystemd/sd-bus/bus-kernel.c
@@ -1338,9 +1338,51 @@ int bus_kernel_create_bus(const char *name, bool world, char **s) {
return fd;
}
-int bus_kernel_create_starter(const char *bus, const char *name) {
+static void bus_kernel_translate_policy(const BusNamePolicy *policy, struct kdbus_item *item)
+{
+ switch (policy->type) {
+ case BUSNAME_POLICY_TYPE_USER:
+ item->policy_access.type = KDBUS_POLICY_ACCESS_USER;
+ item->policy_access.id = policy->uid;
+ break;
+
+ case BUSNAME_POLICY_TYPE_GROUP:
+ item->policy_access.type = KDBUS_POLICY_ACCESS_GROUP;
+ item->policy_access.id = policy->gid;
+ break;
+
+ case BUSNAME_POLICY_TYPE_WORLD:
+ item->policy_access.type = KDBUS_POLICY_ACCESS_WORLD;
+ break;
+
+ default:
+ assert_not_reached("Unknown policy type");
+ }
+
+ switch (policy->access) {
+ case BUSNAME_POLICY_ACCESS_SEE:
+ item->policy_access.access = KDBUS_POLICY_SEE;
+ break;
+
+ case BUSNAME_POLICY_ACCESS_TALK:
+ item->policy_access.access = KDBUS_POLICY_TALK;
+ break;
+
+ case BUSNAME_POLICY_ACCESS_OWN:
+ item->policy_access.access = KDBUS_POLICY_OWN;
+ break;
+
+ default:
+ assert_not_reached("Unknown policy access");
+ }
+}
+
+int bus_kernel_create_starter(const char *bus, const char *name, BusNamePolicy *policy) {
struct kdbus_cmd_hello *hello;
struct kdbus_item *n;
+ size_t policy_cnt = 0;
+ BusNamePolicy *po;
+ size_t size;
char *p;
int fd;
@@ -1354,16 +1396,29 @@ int bus_kernel_create_starter(const char *bus, const char *name) {
if (fd < 0)
return -errno;
- hello = alloca0(ALIGN8(offsetof(struct kdbus_cmd_hello, items) +
- offsetof(struct kdbus_item, str) +
- strlen(name) + 1));
+ LIST_FOREACH(policy, po, policy)
+ policy_cnt++;
+
+ size = ALIGN8(offsetof(struct kdbus_cmd_hello, items)) +
+ ALIGN8(offsetof(struct kdbus_item, str) + strlen(name) + 1) +
+ policy_cnt * ALIGN8(offsetof(struct kdbus_item, policy_access) + sizeof(struct kdbus_policy_access));
+
+ hello = alloca0(size);
n = hello->items;
strcpy(n->str, name);
n->size = offsetof(struct kdbus_item, str) + strlen(n->str) + 1;
n->type = KDBUS_ITEM_NAME;
+ n = KDBUS_ITEM_NEXT(n);
+
+ LIST_FOREACH(policy, po, policy) {
+ n->type = KDBUS_ITEM_POLICY_ACCESS;
+ n->size = offsetof(struct kdbus_item, policy_access) + sizeof(struct kdbus_policy_access);
+ bus_kernel_translate_policy(po, n);
+ n = KDBUS_ITEM_NEXT(n);
+ }
- hello->size = ALIGN8(offsetof(struct kdbus_cmd_hello, items) + n->size);
+ hello->size = size;
hello->conn_flags = KDBUS_HELLO_ACTIVATOR;
hello->pool_size = KDBUS_POOL_SIZE;
diff --git a/src/libsystemd/sd-bus/bus-kernel.h b/src/libsystemd/sd-bus/bus-kernel.h
index 8db418a14d..c4722cbac6 100644
--- a/src/libsystemd/sd-bus/bus-kernel.h
+++ b/src/libsystemd/sd-bus/bus-kernel.h
@@ -23,6 +23,7 @@
#include <stdbool.h>
+#include "busname.h"
#include "sd-bus.h"
#define KDBUS_ITEM_NEXT(item) \
@@ -65,7 +66,7 @@ int bus_kernel_read_message(sd_bus *bus, bool hint_priority, int64_t priority);
int bus_kernel_create_bus(const char *name, bool world, char **s);
int bus_kernel_create_domain(const char *name, char **s);
-int bus_kernel_create_starter(const char *bus, const char *name);
+int bus_kernel_create_starter(const char *bus, const char *name, BusNamePolicy *policy);
int bus_kernel_create_monitor(const char *bus);
int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *mapped, size_t *allocated);