X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Fsocket.c;h=eae9465788058b5b726b530386dc9bfc4a6f4c53;hp=751f20bdcac73684095099aa8266081168b49d15;hb=718db96199e;hpb=3febea3a0b0a968ea281e7959c1654cbaf95c9bf diff --git a/src/core/socket.c b/src/core/socket.c index 751f20bdc..eae946578 100644 --- a/src/core/socket.c +++ b/src/core/socket.c @@ -27,14 +27,15 @@ #include #include #include +#include #include #ifdef HAVE_XATTR #include #endif +#include "sd-event.h" #include "unit.h" #include "socket.h" -#include "netinet/tcp.h" #include "log.h" #include "load-dropin.h" #include "load-fragment.h" @@ -46,11 +47,12 @@ #include "dbus-socket.h" #include "missing.h" #include "special.h" -#include "dbus-common.h" #include "label.h" #include "exit-status.h" #include "def.h" #include "smack-util.h" +#include "bus-util.h" +#include "bus-error.h" static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = { [SOCKET_DEAD] = UNIT_INACTIVE, @@ -67,6 +69,9 @@ static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = { [SOCKET_FAILED] = UNIT_FAILED }; +static int socket_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); +static int socket_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); + static void socket_init(Unit *u) { Socket *s = SOCKET(u); @@ -112,10 +117,10 @@ void socket_free_ports(Socket *s) { while ((p = s->ports)) { LIST_REMOVE(port, s->ports, p); - if (p->fd >= 0) { - unit_unwatch_fd(UNIT(s), &p->fd_watch); + sd_event_source_unref(p->event_source); + + if (p->fd >= 0) close_nointr_nofail(p->fd); - } free(p->path); free(p); @@ -149,7 +154,28 @@ static void socket_done(Unit *u) { free(s->smack_ip_in); free(s->smack_ip_out); - unit_unwatch_timer(u, &s->timer_watch); + s->timer_event_source = sd_event_source_unref(s->timer_event_source); +} + +static int socket_arm_timer(Socket *s) { + int r; + + assert(s); + + if (s->timeout_usec <= 0) { + s->timer_event_source = sd_event_source_unref(s->timer_event_source); + return 0; + } + + if (s->timer_event_source) { + r = sd_event_source_set_time(s->timer_event_source, now(CLOCK_MONOTONIC) + s->timeout_usec); + if (r < 0) + return r; + + return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); + } + + return sd_event_add_monotonic(UNIT(s)->manager->event, now(CLOCK_MONOTONIC) + s->timeout_usec, 0, socket_dispatch_timer, s, &s->timer_event_source); } static int socket_instantiate_service(Socket *s) { @@ -508,10 +534,10 @@ static void socket_dump(Unit *u, FILE *f, const char *prefix) { "%sMessageQueueMessageSize: %li\n", prefix, s->mq_msgsize); - if (s->reuseport) + if (s->reuse_port) fprintf(f, "%sReusePort: %s\n", - prefix, yes_no(s->reuseport)); + prefix, yes_no(s->reuse_port)); if (s->smack) fprintf(f, @@ -673,10 +699,12 @@ static void socket_close_fds(Socket *s) { assert(s); LIST_FOREACH(port, p, s->ports) { + + p->event_source = sd_event_source_unref(p->event_source); + if (p->fd < 0) continue; - unit_unwatch_fd(UNIT(s), &p->fd_watch); close_nointr_nofail(p->fd); /* One little note: we should never delete any sockets @@ -769,8 +797,8 @@ static void socket_apply_socket_options(Socket *s, int fd) { if (setsockopt(fd, SOL_TCP, TCP_CONGESTION, s->tcp_congestion, strlen(s->tcp_congestion)+1) < 0) log_warning_unit(UNIT(s)->id, "TCP_CONGESTION failed: %m"); - if (s->reuseport) { - int b = s->reuseport; + if (s->reuse_port) { + int b = s->reuse_port; if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &b, sizeof(b)) < 0) log_warning_unit(UNIT(s)->id, "SO_REUSEPORT failed: %m"); } @@ -1054,6 +1082,7 @@ rollback: static void socket_unwatch_fds(Socket *s) { SocketPort *p; + int r; assert(s); @@ -1061,7 +1090,11 @@ static void socket_unwatch_fds(Socket *s) { if (p->fd < 0) continue; - unit_unwatch_fd(UNIT(s), &p->fd_watch); + if (p->event_source) { + r = sd_event_source_set_enabled(p->event_source, SD_EVENT_OFF); + if (r < 0) + log_debug_unit(UNIT(s)->id, "Failed to disable event source."); + } } } @@ -1075,13 +1108,15 @@ static int socket_watch_fds(Socket *s) { if (p->fd < 0) continue; - p->fd_watch.socket_accept = - s->accept && - p->type == SOCKET_SOCKET && - socket_address_can_accept(&p->address); + if (p->event_source) + r = sd_event_source_set_enabled(p->event_source, SD_EVENT_ON); + else + r = sd_event_add_io(UNIT(s)->manager->event, p->fd, EPOLLIN, socket_dispatch_io, p, &p->event_source); - if ((r = unit_watch_fd(UNIT(s), p->fd, EPOLLIN, &p->fd_watch)) < 0) + if (r < 0) { + log_warning_unit(UNIT(s)->id, "Failed to watch listening fds: %s", strerror(-r)); goto fail; + } } return 0; @@ -1106,7 +1141,8 @@ static void socket_set_state(Socket *s, SocketState state) { state != SOCKET_STOP_POST && state != SOCKET_FINAL_SIGTERM && state != SOCKET_FINAL_SIGKILL) { - unit_unwatch_timer(UNIT(s), &s->timer_watch); + + s->timer_event_source = sd_event_source_unref(s->timer_event_source); socket_unwatch_control_pid(s); s->control_command = NULL; s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; @@ -1157,7 +1193,7 @@ static int socket_coldplug(Unit *u) { if (r < 0) return r; - r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->timeout_usec, &s->timer_watch); + r = socket_arm_timer(s); if (r < 0) return r; } @@ -1167,13 +1203,17 @@ static int socket_coldplug(Unit *u) { s->deserialized_state == SOCKET_RUNNING || s->deserialized_state == SOCKET_STOP_PRE || s->deserialized_state == SOCKET_STOP_PRE_SIGTERM || - s->deserialized_state == SOCKET_STOP_PRE_SIGKILL) - if ((r = socket_open_fds(s)) < 0) + s->deserialized_state == SOCKET_STOP_PRE_SIGKILL) { + r = socket_open_fds(s); + if (r < 0) return r; + } - if (s->deserialized_state == SOCKET_LISTENING) - if ((r = socket_watch_fds(s)) < 0) + if (s->deserialized_state == SOCKET_LISTENING) { + r = socket_watch_fds(s); + if (r < 0) return r; + } socket_set_state(s, s->deserialized_state); } @@ -1192,7 +1232,7 @@ static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) { unit_realize_cgroup(UNIT(s)); - r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->timeout_usec, &s->timer_watch); + r = socket_arm_timer(s); if (r < 0) goto fail; @@ -1219,7 +1259,8 @@ static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) { if (r < 0) goto fail; - if ((r = unit_watch_pid(UNIT(s), pid)) < 0) + r = unit_watch_pid(UNIT(s), pid); + if (r < 0) /* FIXME: we need to do something here */ goto fail; @@ -1228,7 +1269,7 @@ static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) { return 0; fail: - unit_unwatch_timer(UNIT(s), &s->timer_watch); + s->timer_event_source = sd_event_source_unref(s->timer_event_source); return r; } @@ -1292,7 +1333,7 @@ static void socket_enter_signal(Socket *s, SocketState state, SocketResult f) { goto fail; if (r > 0) { - r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->timeout_usec, &s->timer_watch); + r = socket_arm_timer(s); if (r < 0) goto fail; @@ -1423,11 +1464,10 @@ fail: } static void socket_enter_running(Socket *s, int cfd) { + _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; int r; - DBusError error; assert(s); - dbus_error_init(&error); /* We don't take connections anymore if we are supposed to * shut down anyway */ @@ -1548,13 +1588,11 @@ fail: "%s failed to queue service startup job (Maybe the service file is missing or not a %s unit?): %s", UNIT(s)->id, cfd >= 0 ? "template" : "non-template", - bus_error(&error, r)); + bus_error_message(&error, r)); socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); if (cfd >= 0) close_nointr_nofail(cfd); - - dbus_error_free(&error); } static void socket_run_next(Socket *s) { @@ -1952,20 +1990,39 @@ const char* socket_port_type_to_string(SocketPort *p) { assert(p); switch (p->type) { - case SOCKET_SOCKET: - switch (p->address.type) { - case SOCK_STREAM: return "Stream"; - case SOCK_DGRAM: return "Datagram"; - case SOCK_SEQPACKET: return "SequentialPacket"; - case SOCK_RAW: - if (socket_address_family(&p->address) == AF_NETLINK) - return "Netlink"; - default: return "Invalid"; - } - case SOCKET_SPECIAL: return "Special"; - case SOCKET_MQUEUE: return "MessageQueue"; - case SOCKET_FIFO: return "FIFO"; - default: return NULL; + + case SOCKET_SOCKET: + + switch (p->address.type) { + + case SOCK_STREAM: + return "Stream"; + + case SOCK_DGRAM: + return "Datagram"; + + case SOCK_SEQPACKET: + return "SequentialPacket"; + + case SOCK_RAW: + if (socket_address_family(&p->address) == AF_NETLINK) + return "Netlink"; + + default: + return NULL; + } + + case SOCKET_SPECIAL: + return "Special"; + + case SOCKET_MQUEUE: + return "MessageQueue"; + + case SOCKET_FIFO: + return "FIFO"; + + default: + return NULL; } } @@ -1977,33 +2034,36 @@ _pure_ static bool socket_check_gc(Unit *u) { return s->n_connections > 0; } -static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) { - Socket *s = SOCKET(u); +static int socket_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { + SocketPort *p = userdata; int cfd = -1; - assert(s); + assert(p); assert(fd >= 0); - if (s->state != SOCKET_LISTENING) - return; + if (p->socket->state != SOCKET_LISTENING) + return 0; - log_debug_unit(u->id, "Incoming traffic on %s", u->id); + log_debug_unit(UNIT(p->socket)->id, "Incoming traffic on %s", UNIT(p->socket)->id); - if (events != EPOLLIN) { + if (revents != EPOLLIN) { - if (events & EPOLLHUP) - log_error_unit(u->id, + if (revents & EPOLLHUP) + log_error_unit(UNIT(p->socket)->id, "%s: Got POLLHUP on a listening socket. The service probably invoked shutdown() on it, and should better not do that.", - u->id); + UNIT(p->socket)->id); else - log_error_unit(u->id, + log_error_unit(UNIT(p->socket)->id, "%s: Got unexpected poll event (0x%x) on socket.", - u->id, events); + UNIT(p->socket)->id, revents); goto fail; } - if (w->socket_accept) { + if (p->socket->accept && + p->type == SOCKET_SOCKET && + socket_address_can_accept(&p->address)) { + for (;;) { cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK); @@ -2012,7 +2072,7 @@ static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) { if (errno == EINTR) continue; - log_error_unit(u->id, + log_error_unit(UNIT(p->socket)->id, "Failed to accept socket: %m"); goto fail; } @@ -2020,14 +2080,15 @@ static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) { break; } - socket_apply_socket_options(s, cfd); + socket_apply_socket_options(p->socket, cfd); } - socket_enter_running(s, cfd); - return; + socket_enter_running(p->socket, cfd); + return 0; fail: - socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); + socket_enter_stop_pre(p->socket, SOCKET_FAILURE_RESOURCES); + return 0; } static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) { @@ -2124,81 +2185,82 @@ static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) { unit_add_to_dbus_queue(u); } -static void socket_timer_event(Unit *u, uint64_t elapsed, Watch *w) { - Socket *s = SOCKET(u); +static int socket_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { + Socket *s = SOCKET(userdata); assert(s); - assert(elapsed == 1); - assert(w == &s->timer_watch); + assert(s->timer_event_source == source); switch (s->state) { case SOCKET_START_PRE: - log_warning_unit(u->id, - "%s starting timed out. Terminating.", u->id); + log_warning_unit(UNIT(s)->id, + "%s starting timed out. Terminating.", UNIT(s)->id); socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_TIMEOUT); break; case SOCKET_START_POST: - log_warning_unit(u->id, - "%s starting timed out. Stopping.", u->id); + log_warning_unit(UNIT(s)->id, + "%s starting timed out. Stopping.", UNIT(s)->id); socket_enter_stop_pre(s, SOCKET_FAILURE_TIMEOUT); break; case SOCKET_STOP_PRE: - log_warning_unit(u->id, - "%s stopping timed out. Terminating.", u->id); + log_warning_unit(UNIT(s)->id, + "%s stopping timed out. Terminating.", UNIT(s)->id); socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, SOCKET_FAILURE_TIMEOUT); break; case SOCKET_STOP_PRE_SIGTERM: if (s->kill_context.send_sigkill) { - log_warning_unit(u->id, - "%s stopping timed out. Killing.", u->id); + log_warning_unit(UNIT(s)->id, + "%s stopping timed out. Killing.", UNIT(s)->id); socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, SOCKET_FAILURE_TIMEOUT); } else { - log_warning_unit(u->id, + log_warning_unit(UNIT(s)->id, "%s stopping timed out. Skipping SIGKILL. Ignoring.", - u->id); + UNIT(s)->id); socket_enter_stop_post(s, SOCKET_FAILURE_TIMEOUT); } break; case SOCKET_STOP_PRE_SIGKILL: - log_warning_unit(u->id, - "%s still around after SIGKILL. Ignoring.", u->id); + log_warning_unit(UNIT(s)->id, + "%s still around after SIGKILL. Ignoring.", UNIT(s)->id); socket_enter_stop_post(s, SOCKET_FAILURE_TIMEOUT); break; case SOCKET_STOP_POST: - log_warning_unit(u->id, - "%s stopping timed out (2). Terminating.", u->id); + log_warning_unit(UNIT(s)->id, + "%s stopping timed out (2). Terminating.", UNIT(s)->id); socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_TIMEOUT); break; case SOCKET_FINAL_SIGTERM: if (s->kill_context.send_sigkill) { - log_warning_unit(u->id, - "%s stopping timed out (2). Killing.", u->id); + log_warning_unit(UNIT(s)->id, + "%s stopping timed out (2). Killing.", UNIT(s)->id); socket_enter_signal(s, SOCKET_FINAL_SIGKILL, SOCKET_FAILURE_TIMEOUT); } else { - log_warning_unit(u->id, + log_warning_unit(UNIT(s)->id, "%s stopping timed out (2). Skipping SIGKILL. Ignoring.", - u->id); + UNIT(s)->id); socket_enter_dead(s, SOCKET_FAILURE_TIMEOUT); } break; case SOCKET_FINAL_SIGKILL: - log_warning_unit(u->id, + log_warning_unit(UNIT(s)->id, "%s still around after SIGKILL (2). Entering failed mode.", - u->id); + UNIT(s)->id); socket_enter_dead(s, SOCKET_FAILURE_TIMEOUT); break; default: assert_not_reached("Timeout at wrong time."); } + + return 0; } int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) { @@ -2319,7 +2381,7 @@ static void socket_trigger_notify(Unit *u, Unit *other) { socket_set_state(s, SOCKET_RUNNING); } -static int socket_kill(Unit *u, KillWho who, int signo, DBusError *error) { +static int socket_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { return unit_kill_common(u, who, signo, -1, SOCKET(u)->control_pid, error); } @@ -2363,22 +2425,20 @@ DEFINE_STRING_TABLE_LOOKUP(socket_result, SocketResult); const UnitVTable socket_vtable = { .object_size = sizeof(Socket), + .exec_context_offset = offsetof(Socket, exec_context), + .cgroup_context_offset = offsetof(Socket, cgroup_context), + .kill_context_offset = offsetof(Socket, kill_context), .sections = "Unit\0" "Socket\0" "Install\0", - .private_section = "Socket", - .exec_context_offset = offsetof(Socket, exec_context), - .cgroup_context_offset = offsetof(Socket, cgroup_context), .init = socket_init, .done = socket_done, .load = socket_load, - .kill = socket_kill, - .coldplug = socket_coldplug, .dump = socket_dump, @@ -2386,6 +2446,8 @@ const UnitVTable socket_vtable = { .start = socket_start, .stop = socket_stop, + .kill = socket_kill, + .serialize = socket_serialize, .deserialize_item = socket_deserialize_item, .distribute_fds = socket_distribute_fds, @@ -2395,17 +2457,15 @@ const UnitVTable socket_vtable = { .check_gc = socket_check_gc, - .fd_event = socket_fd_event, .sigchld_event = socket_sigchld_event, - .timer_event = socket_timer_event, .trigger_notify = socket_trigger_notify, .reset_failed = socket_reset_failed, .bus_interface = "org.freedesktop.systemd1.Socket", - .bus_message_handler = bus_socket_message_handler, - .bus_invalidating_properties = bus_socket_invalidating_properties, + .bus_vtable = bus_socket_vtable, + .bus_changing_properties = bus_socket_changing_properties, .bus_set_property = bus_socket_set_property, .bus_commit_properties = bus_socket_commit_properties,