/* If we requested the list of well-known names to be appended
* and the sender had none no item for it will be
- * attached. However, this does *not* mean that we the kernel
+ * attached. However, this does *not* mean that the kernel
* didn't want to provide this information to us. Hence, let's
* explicitly mark this information as available if it was
* requested. */
return fd;
}
-static int bus_kernel_translate_access(BusPolicyAccess access) {
- assert(access >= 0);
- assert(access < _BUS_POLICY_ACCESS_MAX);
-
- switch (access) {
-
- case BUS_POLICY_ACCESS_SEE:
- return KDBUS_POLICY_SEE;
-
- case BUS_POLICY_ACCESS_TALK:
- return KDBUS_POLICY_TALK;
-
- case BUS_POLICY_ACCESS_OWN:
- return KDBUS_POLICY_OWN;
-
- default:
- assert_not_reached("Unknown policy access");
- }
-}
-
-static int bus_kernel_translate_policy(const BusNamePolicy *policy, struct kdbus_item *item) {
- int r;
-
- assert(policy);
- assert(item);
-
- switch (policy->type) {
-
- case BUSNAME_POLICY_TYPE_USER: {
- const char *user = policy->name;
- uid_t uid;
-
- r = get_user_creds(&user, &uid, NULL, NULL, NULL);
- if (r < 0)
- return r;
-
- item->policy_access.type = KDBUS_POLICY_ACCESS_USER;
- item->policy_access.id = uid;
- break;
- }
-
- case BUSNAME_POLICY_TYPE_GROUP: {
- const char *group = policy->name;
- gid_t gid;
-
- r = get_group_creds(&group, &gid);
- if (r < 0)
- return r;
-
- item->policy_access.type = KDBUS_POLICY_ACCESS_GROUP;
- item->policy_access.id = gid;
- break;
- }
-
- default:
- assert_not_reached("Unknown policy type");
- }
-
- item->policy_access.access = bus_kernel_translate_access(policy->access);
-
- return 0;
-}
-
int bus_kernel_open_bus_fd(const char *bus, char **path) {
char *p;
int fd;
return fd;
}
-int bus_kernel_set_endpoint_policy(int fd, uid_t uid, BusEndpoint *ep) {
-
- struct kdbus_cmd_update *update;
- struct kdbus_item *n;
- BusEndpointPolicy *po;
- Iterator i;
- size_t size;
- int r;
-
- size = ALIGN8(offsetof(struct kdbus_cmd_update, items));
-
- HASHMAP_FOREACH(po, ep->policy_hash, i) {
- size += ALIGN8(offsetof(struct kdbus_item, str) + strlen(po->name) + 1);
- size += ALIGN8(offsetof(struct kdbus_item, policy_access) + sizeof(struct kdbus_policy_access));
- }
-
- update = alloca0_align(size, 8);
- update->size = size;
-
- n = update->items;
-
- HASHMAP_FOREACH(po, ep->policy_hash, i) {
- n->type = KDBUS_ITEM_NAME;
- n->size = offsetof(struct kdbus_item, str) + strlen(po->name) + 1;
- strcpy(n->str, po->name);
- n = KDBUS_ITEM_NEXT(n);
-
- n->type = KDBUS_ITEM_POLICY_ACCESS;
- n->size = offsetof(struct kdbus_item, policy_access) + sizeof(struct kdbus_policy_access);
-
- n->policy_access.type = KDBUS_POLICY_ACCESS_USER;
- n->policy_access.access = bus_kernel_translate_access(po->access);
- n->policy_access.id = uid;
-
- n = KDBUS_ITEM_NEXT(n);
- }
-
- r = ioctl(fd, KDBUS_CMD_ENDPOINT_UPDATE, update);
- if (r < 0)
- return -errno;
-
- return 0;
-}
-
-int bus_kernel_make_starter(
- int fd,
- const char *name,
- bool activating,
- bool accept_fd,
- BusNamePolicy *policy,
- BusPolicyAccess world_policy) {
-
- struct kdbus_cmd_free cmd_free = { .size = sizeof(cmd_free) };
- struct kdbus_cmd_hello *hello;
- struct kdbus_item *n;
- size_t policy_cnt = 0;
- BusNamePolicy *po;
- size_t size;
- int r;
-
- assert(fd >= 0);
- assert(name);
-
- LIST_FOREACH(policy, po, policy)
- policy_cnt++;
-
- if (world_policy >= 0)
- policy_cnt++;
-
- size = 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_align(size, 8);
-
- 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);
-
- r = bus_kernel_translate_policy(po, n);
- if (r < 0)
- return r;
-
- n = KDBUS_ITEM_NEXT(n);
- }
-
- if (world_policy >= 0) {
- n->type = KDBUS_ITEM_POLICY_ACCESS;
- n->size = offsetof(struct kdbus_item, policy_access) + sizeof(struct kdbus_policy_access);
- n->policy_access.type = KDBUS_POLICY_ACCESS_WORLD;
- n->policy_access.access = bus_kernel_translate_access(world_policy);
- }
-
- hello->size = size;
- hello->flags =
- (activating ? KDBUS_HELLO_ACTIVATOR : KDBUS_HELLO_POLICY_HOLDER) |
- (accept_fd ? KDBUS_HELLO_ACCEPT_FD : 0);
- hello->pool_size = KDBUS_POOL_SIZE;
- hello->attach_flags_send = _KDBUS_ATTACH_ANY;
- hello->attach_flags_recv = _KDBUS_ATTACH_ANY;
-
- if (ioctl(fd, KDBUS_CMD_HELLO, hello) < 0)
- return -errno;
-
- /* not interested in any output values */
- cmd_free.offset = hello->offset;
- (void) ioctl(fd, KDBUS_CMD_FREE, &cmd_free);
-
- /* The higher 32bit of the bus_flags fields are considered
- * 'incompatible flags'. Refuse them all for now. */
- if (hello->bus_flags > 0xFFFFFFFFULL)
- return -ENOTSUP;
-
- return fd;
-}
-
int bus_kernel_try_close(sd_bus *bus) {
assert(bus);
assert(bus->is_kernel);
~ianmdlvl / elogind.git / blobdiff