bus: implement synchronous message calls via kernel ioctl

1 files changed, 10 insertions, 6 deletions

diff --git a/src/libsystemd/sd-bus/sd-bus.c b/src/libsystemd/sd-bus/sd-bus.c
index 95d80db240..2c458f311c 100644
--- a/src/libsystemd/sd-bus/sd-bus.c
+++ b/src/libsystemd/sd-bus/sd-bus.c
@@ -1371,14 +1371,14 @@ int bus_seal_synthetic_message(sd_bus *b, sd_bus_message *m) {
         return bus_message_seal(m, 0xFFFFFFFFULL, 0);
 }
 
-static int bus_write_message(sd_bus *bus, sd_bus_message *m, size_t *idx) {
+static int bus_write_message(sd_bus *bus, sd_bus_message *m, bool hint_sync_call, size_t *idx) {
         int r;
 
         assert(bus);
         assert(m);
 
         if (bus->is_kernel)
-                r = bus_kernel_write_message(bus, m);
+                r = bus_kernel_write_message(bus, m, hint_sync_call);
         else
                 r = bus_socket_write_message(bus, m, idx);
 
@@ -1408,7 +1408,7 @@ static int dispatch_wqueue(sd_bus *bus) {
 
         while (bus->wqueue_size > 0) {
 
-                r = bus_write_message(bus, bus->wqueue[0], &bus->windex);
+                r = bus_write_message(bus, bus->wqueue[0], false, &bus->windex);
                 if (r < 0)
                         return r;
                 else if (r == 0)
@@ -1486,7 +1486,7 @@ static int dispatch_rqueue(sd_bus *bus, sd_bus_message **m) {
         }
 }
 
-_public_ int sd_bus_send(sd_bus *bus, sd_bus_message *_m, uint64_t *cookie) {
+static int bus_send_internal(sd_bus *bus, sd_bus_message *_m, uint64_t *cookie, bool hint_sync_call) {
         _cleanup_bus_message_unref_ sd_bus_message *m = sd_bus_message_ref(_m);
         int r;
 
@@ -1526,7 +1526,7 @@ _public_ int sd_bus_send(sd_bus *bus, sd_bus_message *_m, uint64_t *cookie) {
         if ((bus->state == BUS_RUNNING || bus->state == BUS_HELLO) && bus->wqueue_size <= 0) {
                 size_t idx = 0;
 
-                r = bus_write_message(bus, m, &idx);
+                r = bus_write_message(bus, m, hint_sync_call, &idx);
                 if (r < 0) {
                         if (r == -ENOTCONN || r == -ECONNRESET || r == -EPIPE || r == -ESHUTDOWN) {
                                 bus_enter_closing(bus);
@@ -1562,6 +1562,10 @@ _public_ int sd_bus_send(sd_bus *bus, sd_bus_message *_m, uint64_t *cookie) {
         return 1;
 }
 
+_public_ int sd_bus_send(sd_bus *bus, sd_bus_message *m, uint64_t *cookie) {
+        return bus_send_internal(bus, m, cookie, false);
+}
+
 _public_ int sd_bus_send_to(sd_bus *bus, sd_bus_message *m, const char *destination, uint64_t *cookie) {
         int r;
 
@@ -1755,7 +1759,7 @@ _public_ int sd_bus_call(
         if (r < 0)
                 return r;
 
-        r = sd_bus_send(bus, m, &cookie);
+        r = bus_send_internal(bus, m, &cookie, true);
         if (r < 0)
                 return r;