diff options
Diffstat (limited to 'src/libsystemd-bus/sd-bus.c')
| -rw-r--r-- | src/libsystemd-bus/sd-bus.c | 139 |
1 files changed, 85 insertions, 54 deletions
diff --git a/src/libsystemd-bus/sd-bus.c b/src/libsystemd-bus/sd-bus.c index a4709a109b..9ab4367819 100644 --- a/src/libsystemd-bus/sd-bus.c +++ b/src/libsystemd-bus/sd-bus.c @@ -50,10 +50,14 @@ #include "bus-protocol.h" static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec); +static int attach_io_events(sd_bus *b); +static void detach_io_events(sd_bus *b); static void bus_close_fds(sd_bus *b) { assert(b); + detach_io_events(b); + if (b->input_fd >= 0) close_nointr_nofail(b->input_fd); @@ -882,36 +886,27 @@ static int bus_start_address(sd_bus *b) { assert(b); for (;;) { - sd_bus_close(b); + bool skipped = false; - if (b->exec_path) { + bus_close_fds(b); + if (b->exec_path) r = bus_socket_exec(b); - if (r >= 0) - return r; - - b->last_connect_error = -r; - } else if (b->kernel) { - + else if (b->kernel) r = bus_kernel_connect(b); - if (r >= 0) - return r; - - b->last_connect_error = -r; - - } else if (b->machine) { - + else if (b->machine) r = bus_container_connect(b); - if (r >= 0) - return r; - - b->last_connect_error = -r; - - } else if (b->sockaddr.sa.sa_family != AF_UNSPEC) { - + else if (b->sockaddr.sa.sa_family != AF_UNSPEC) r = bus_socket_connect(b); - if (r >= 0) - return r; + else + skipped = true; + + if (!skipped) { + if (r >= 0) { + r = attach_io_events(b); + if (r >= 0) + return r; + } b->last_connect_error = -r; } @@ -2598,6 +2593,66 @@ static int quit_callback(sd_event_source *event, void *userdata) { return 1; } +static int attach_io_events(sd_bus *bus) { + int r; + + assert(bus); + + if (bus->input_fd < 0) + return 0; + + if (!bus->event) + return 0; + + if (!bus->input_io_event_source) { + r = sd_event_add_io(bus->event, bus->input_fd, 0, io_callback, bus, &bus->input_io_event_source); + if (r < 0) + return r; + + r = sd_event_source_set_prepare(bus->input_io_event_source, prepare_callback); + if (r < 0) + return r; + + r = sd_event_source_set_priority(bus->input_io_event_source, bus->event_priority); + } else + r = sd_event_source_set_io_fd(bus->input_io_event_source, bus->input_fd); + + if (r < 0) + return r; + + if (bus->output_fd != bus->input_fd) { + assert(bus->output_fd >= 0); + + if (!bus->output_io_event_source) { + r = sd_event_add_io(bus->event, bus->output_fd, 0, io_callback, bus, &bus->output_io_event_source); + if (r < 0) + return r; + + r = sd_event_source_set_priority(bus->output_io_event_source, bus->event_priority); + } else + r = sd_event_source_set_io_fd(bus->output_io_event_source, bus->output_fd); + + if (r < 0) + return r; + } + + return 0; +} + +static void detach_io_events(sd_bus *bus) { + assert(bus); + + if (bus->input_io_event_source) { + sd_event_source_set_enabled(bus->input_io_event_source, SD_EVENT_OFF); + bus->input_io_event_source = sd_event_source_unref(bus->input_io_event_source); + } + + if (bus->output_io_event_source) { + sd_event_source_set_enabled(bus->output_io_event_source, SD_EVENT_OFF); + bus->output_io_event_source = sd_event_source_unref(bus->output_io_event_source); + } +} + _public_ int sd_bus_attach_event(sd_bus *bus, sd_event *event, int priority) { int r; @@ -2616,27 +2671,7 @@ _public_ int sd_bus_attach_event(sd_bus *bus, sd_event *event, int priority) { return r; } - r = sd_event_add_io(bus->event, bus->input_fd, 0, io_callback, bus, &bus->input_io_event_source); - if (r < 0) - goto fail; - - r = sd_event_source_set_priority(bus->input_io_event_source, priority); - if (r < 0) - goto fail; - - if (bus->output_fd != bus->input_fd) { - r = sd_event_add_io(bus->event, bus->output_fd, 0, io_callback, bus, &bus->output_io_event_source); - if (r < 0) - goto fail; - - r = sd_event_source_set_priority(bus->output_io_event_source, priority); - if (r < 0) - goto fail; - } - - r = sd_event_source_set_prepare(bus->input_io_event_source, prepare_callback); - if (r < 0) - goto fail; + bus->event_priority = priority; r = sd_event_add_monotonic(bus->event, 0, 0, time_callback, bus, &bus->time_event_source); if (r < 0) @@ -2650,6 +2685,10 @@ _public_ int sd_bus_attach_event(sd_bus *bus, sd_event *event, int priority) { if (r < 0) goto fail; + r = attach_io_events(bus); + if (r < 0) + goto fail; + return 0; fail: @@ -2663,15 +2702,7 @@ _public_ int sd_bus_detach_event(sd_bus *bus) { if (!bus->event) return 0; - if (bus->input_io_event_source) { - sd_event_source_set_enabled(bus->input_io_event_source, SD_EVENT_OFF); - bus->input_io_event_source = sd_event_source_unref(bus->input_io_event_source); - } - - if (bus->output_io_event_source) { - sd_event_source_set_enabled(bus->output_io_event_source, SD_EVENT_OFF); - bus->output_io_event_source = sd_event_source_unref(bus->output_io_event_source); - } + detach_io_events(bus); if (bus->time_event_source) { sd_event_source_set_enabled(bus->time_event_source, SD_EVENT_OFF); |