}
}
- /* The higher 32bit of both flags fields are considered
+ /* The higher 32bit of the bus_flags fields are considered
* 'incompatible flags'. Refuse them all for now. */
- if (hello->bus_flags > 0xFFFFFFFFULL ||
- hello->conn_flags > 0xFFFFFFFFULL)
+ if (hello->bus_flags > 0xFFFFFFFFULL)
return -ENOTSUP;
if (!bloom_validate_parameters((size_t) hello->bloom.size, (unsigned) hello->bloom.n_hash))
int bus_kernel_write_message(sd_bus *bus, sd_bus_message *m, bool hint_sync_call) {
int r;
+ uint64_t flags;
assert(bus);
assert(m);
if (hint_sync_call)
m->kdbus->flags |= KDBUS_MSG_FLAGS_EXPECT_REPLY|KDBUS_MSG_FLAGS_SYNC_REPLY;
+ /* The kernel will return the set of supported flags in m->kdbus->flags.
+ * Save the current message flags before issuing the ioctl, and restore them
+ * afterwards */
+ flags = m->kdbus->flags;
r = ioctl(bus->output_fd, KDBUS_CMD_MSG_SEND, m->kdbus);
+ m->kdbus->flags = flags;
if (r < 0) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus_message *reply;
return -errno;
}
- /* The features field are considered 'incompatible flags'.
- * Refuse them all for now. */
- if (make->features) {
- safe_close(fd);
- return -ENOTSUP;
- }
-
if (s) {
char *p;
return -errno;
}
- /* The features field are considered 'incompatible flags'.
- * Refuse them all for now. */
- if (make->features) {
- safe_close(fd);
- return -ENOTSUP;
- }
-
if (ep_path) {
char *p;
if (ioctl(fd, KDBUS_CMD_HELLO, hello) < 0)
return -errno;
- /* The higher 32bit of both flags fields are considered
+ /* The higher 32bit of the bus_flags fields are considered
* 'incompatible flags'. Refuse them all for now. */
- if (hello->features ||
- hello->bus_flags > 0xFFFFFFFFULL ||
- hello->conn_flags > 0xFFFFFFFFULL)
+ if (hello->bus_flags > 0xFFFFFFFFULL)
return -ENOTSUP;
if (!bloom_validate_parameters((size_t) hello->bloom.size, (unsigned) hello->bloom.n_hash))
#define KDBUS_DST_ID_NAME (0)
#define KDBUS_MATCH_ID_ANY (~0ULL)
#define KDBUS_DST_ID_BROADCAST (~0ULL)
+#define KDBUS_FLAG_KERNEL (1ULL << 63)
/**
* struct kdbus_notify_id_change - name registry change message
/**
* struct kdbus_cmd_hello - struct to say hello to kdbus
* @size: The total size of the structure
- * @features: Feature negotiation bitmask
* @conn_flags: Connection flags (KDBUS_HELLO_*).
* @attach_flags: Mask of metadata to attach to each message sent
* (KDBUS_ATTACH_*)
*/
struct kdbus_cmd_hello {
__u64 size;
- __u64 features;
__u64 conn_flags;
__u64 attach_flags;
__u64 bus_flags;
/**
* struct kdbus_cmd_make - struct to make a bus, an endpoint or a domain
* @size: The total size of the struct
- * @features: Feature negotiation bitmask
* @flags: Properties for the bus/ep/domain to create
* @items: Items describing details
*
*/
struct kdbus_cmd_make {
__u64 size;
- __u64 features;
__u64 flags;
struct kdbus_item items[0];
} __attribute__((aligned(8)));