/*-*- Mode: C; c-basic-offset: 8 -*-*/
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
-#include <sys/poll.h>
+#include <sys/epoll.h>
#include <signal.h>
#include "unit.h"
#include "socket.h"
#include "log.h"
+#include "load-dropin.h"
+#include "load-fragment.h"
-static const UnitActiveState state_table[_SOCKET_STATE_MAX] = {
+static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = {
[SOCKET_DEAD] = UNIT_INACTIVE,
[SOCKET_START_PRE] = UNIT_ACTIVATING,
[SOCKET_START_POST] = UNIT_ACTIVATING,
[SOCKET_MAINTAINANCE] = UNIT_INACTIVE,
};
+static const char* const state_string_table[_SOCKET_STATE_MAX] = {
+ [SOCKET_DEAD] = "dead",
+ [SOCKET_START_PRE] = "start-pre",
+ [SOCKET_START_POST] = "start-post",
+ [SOCKET_LISTENING] = "listening",
+ [SOCKET_RUNNING] = "running",
+ [SOCKET_STOP_PRE] = "stop-pre",
+ [SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm",
+ [SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill",
+ [SOCKET_STOP_POST] = "stop-post",
+ [SOCKET_STOP_POST_SIGTERM] = "stop-post-sigterm",
+ [SOCKET_STOP_POST_SIGKILL] = "stop-post-sigkill",
+ [SOCKET_MAINTAINANCE] = "maintainance"
+};
+
static void socket_done(Unit *u) {
Socket *s = SOCKET(u);
SocketPort *p;
s->service = NULL;
- unit_unwatch_timer(u, &s->timer_id);
+ free(s->bind_to_device);
+
+ unit_unwatch_timer(u, &s->timer_watch);
}
-static int socket_init(Unit *u) {
+static int socket_init(Unit *u, UnitLoadState *new_state) {
Socket *s = SOCKET(u);
char *t;
int r;
* reload */
s->state = 0;
- s->timer_id = -1;
+ s->timer_watch.type = WATCH_INVALID;
s->bind_ipv6_only = false;
s->backlog = SOMAXCONN;
s->timeout_usec = DEFAULT_TIMEOUT_USEC;
+ s->directory_mode = 0755;
+ s->socket_mode = 0666;
exec_context_init(&s->exec_context);
- if ((r = unit_load_fragment_and_dropin(u)) < 0)
- goto fail;
+ if ((r = unit_load_fragment(u, new_state)) < 0)
+ return r;
- if (!(t = unit_name_change_suffix(unit_id(u), ".service"))) {
- r = -ENOMEM;
- goto fail;
- }
+ if (*new_state == UNIT_STUB)
+ return -ENOENT;
- r = manager_load_unit(u->meta.manager, t, (Unit**) &s->service);
- free(t);
+ if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
+ return r;
- if (r < 0)
- goto fail;
+ /* This is a new unit? Then let's add in some extras */
+ if (*new_state == UNIT_LOADED) {
- if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(s->service))) < 0)
- goto fail;
+ if (!(t = unit_name_change_suffix(unit_id(u), ".service")))
+ return -ENOMEM;
- return 0;
+ r = manager_load_unit(u->meta.manager, t, (Unit**) &s->service);
+ free(t);
-fail:
- socket_done(u);
- return r;
+ if (r < 0)
+ return r;
+
+ if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(s->service))) < 0)
+ return r;
+
+ if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
+ return r;
+
+ if ((r = unit_add_default_cgroup(u)) < 0)
+ return r;
+ }
+
+ return 0;
}
static const char* listen_lookup(int type) {
static void socket_dump(Unit *u, FILE *f, const char *prefix) {
- static const char* const state_table[_SOCKET_STATE_MAX] = {
- [SOCKET_DEAD] = "dead",
- [SOCKET_START_PRE] = "start-pre",
- [SOCKET_START_POST] = "start-post",
- [SOCKET_LISTENING] = "listening",
- [SOCKET_RUNNING] = "running",
- [SOCKET_STOP_PRE] = "stop-pre",
- [SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm",
- [SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill",
- [SOCKET_STOP_POST] = "stop-post",
- [SOCKET_STOP_POST_SIGTERM] = "stop-post-sigterm",
- [SOCKET_STOP_POST_SIGKILL] = "stop-post-sigkill",
- [SOCKET_MAINTAINANCE] = "maintainance"
- };
-
static const char* const command_table[_SOCKET_EXEC_MAX] = {
[SOCKET_EXEC_START_PRE] = "StartPre",
[SOCKET_EXEC_START_POST] = "StartPost",
SocketExecCommand c;
Socket *s = SOCKET(u);
SocketPort *p;
- char *prefix2;
+ const char *prefix2;
+ char *p2;
assert(s);
+ assert(f);
- prefix2 = strappend(prefix, "\t");
- if (!prefix2)
- prefix2 = "";
+ p2 = strappend(prefix, "\t");
+ prefix2 = p2 ? p2 : prefix;
fprintf(f,
"%sSocket State: %s\n"
"%sBindIPv6Only: %s\n"
- "%sBacklog: %u\n",
- prefix, state_table[s->state],
+ "%sBacklog: %u\n"
+ "%sSocketMode: %04o\n"
+ "%sDirectoryMode: %04o\n",
+ prefix, state_string_table[s->state],
prefix, yes_no(s->bind_ipv6_only),
- prefix, s->backlog);
+ prefix, s->backlog,
+ prefix, s->socket_mode,
+ prefix, s->directory_mode);
+
+ if (s->bind_to_device)
+ fprintf(f,
+ "%sBindToDevice: %s\n",
+ prefix, s->bind_to_device);
LIST_FOREACH(port, p, s->ports) {
exec_command_dump_list(s->exec_command[c], f, prefix2);
}
- free(prefix2);
+ free(p2);
}
static void socket_close_fds(Socket *s) {
if (p->fd < 0)
continue;
- unit_unwatch_fd(UNIT(s), p->fd);
+ unit_unwatch_fd(UNIT(s), &p->fd_watch);
assert_se(close_nointr(p->fd) >= 0);
p->fd = -1;
if (p->type == SOCKET_SOCKET) {
- if ((r = socket_address_listen(&p->address, s->backlog, s->bind_ipv6_only, &p->fd)) < 0)
+ if ((r = socket_address_listen(
+ &p->address,
+ s->backlog,
+ s->bind_ipv6_only,
+ s->bind_to_device,
+ s->directory_mode,
+ s->socket_mode,
+ &p->fd)) < 0)
goto rollback;
} else {
struct stat st;
assert(p->type == SOCKET_FIFO);
- if (mkfifo(p->path, 0666 & ~s->exec_context.umask) < 0 && errno != EEXIST) {
+ mkdir_parents(p->path, s->directory_mode);
+
+ if (mkfifo(p->path, s->socket_mode) < 0 && errno != EEXIST) {
r = -errno;
goto rollback;
}
if (p->fd < 0)
continue;
- unit_unwatch_fd(UNIT(s), p->fd);
+ unit_unwatch_fd(UNIT(s), &p->fd_watch);
}
}
if (p->fd < 0)
continue;
- if ((r = unit_watch_fd(UNIT(s), p->fd, POLLIN)) < 0)
+ if ((r = unit_watch_fd(UNIT(s), p->fd, EPOLLIN, &p->fd_watch)) < 0)
goto fail;
}
state != SOCKET_STOP_POST &&
state != SOCKET_STOP_POST_SIGTERM &&
state != SOCKET_STOP_POST_SIGKILL)
- unit_unwatch_timer(UNIT(s), &s->timer_id);
+ unit_unwatch_timer(UNIT(s), &s->timer_watch);
if (state != SOCKET_START_PRE &&
state != SOCKET_START_POST &&
state != SOCKET_STOP_POST &&
state != SOCKET_STOP_POST_SIGTERM &&
state != SOCKET_STOP_POST_SIGKILL)
- if (s->control_pid >= 0) {
+ if (s->control_pid > 0) {
unit_unwatch_pid(UNIT(s), s->control_pid);
s->control_pid = 0;
}
if (state != SOCKET_LISTENING)
socket_unwatch_fds(s);
- unit_notify(UNIT(s), state_table[old_state], state_table[s->state]);
+ log_debug("%s changed %s → %s", unit_id(UNIT(s)), state_string_table[old_state], state_string_table[state]);
+
+ unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
}
static int socket_spawn(Socket *s, ExecCommand *c, bool timeout, pid_t *_pid) {
assert(_pid);
if (timeout) {
- if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_id)) < 0)
+ if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
goto fail;
} else
- unit_unwatch_timer(UNIT(s), &s->timer_id);
-
- if ((r = exec_spawn(c, &s->exec_context, NULL, 0, &pid)) < 0)
+ unit_unwatch_timer(UNIT(s), &s->timer_watch);
+
+ if ((r = exec_spawn(c,
+ &s->exec_context,
+ NULL, 0,
+ true,
+ true,
+ UNIT(s)->meta.cgroup_bondings,
+ &pid)) < 0)
goto fail;
if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
fail:
if (timeout)
- unit_unwatch_timer(UNIT(s), &s->timer_id);
+ unit_unwatch_timer(UNIT(s), &s->timer_watch);
return r;
}
if (!success)
s->failure = true;
- if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST])) {
-
+ if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST]))
if ((r = socket_spawn(s, s->control_command, true, &s->control_pid)) < 0)
goto fail;
- socket_set_state(s, SOCKET_STOP_POST);
- } else
+ socket_set_state(s, SOCKET_STOP_POST);
+
+ if (!s->control_command)
socket_enter_dead(s, true);
return;
r = -errno;
goto fail;
}
+ }
- socket_set_state(s, state);
- } else
+ socket_set_state(s, state);
+
+ if (s->control_pid <= 0)
socket_enter_dead(s, true);
return;
if (!success)
s->failure = true;
- if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE])) {
-
+ if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE]))
if ((r = socket_spawn(s, s->control_command, true, &s->control_pid)) < 0)
goto fail;
- socket_set_state(s, SOCKET_STOP_PRE);
- } else
+ socket_set_state(s, SOCKET_STOP_PRE);
+
+ if (!s->control_command)
socket_enter_stop_post(s, true);
return;
socket_enter_stop_post(s, false);
}
+static void socket_enter_listening(Socket *s) {
+ int r;
+ assert(s);
+
+ if ((r = socket_watch_fds(s)) < 0) {
+ log_warning("%s failed to watch sockets: %s", unit_id(UNIT(s)), strerror(-r));
+ goto fail;
+ }
+
+ socket_set_state(s, SOCKET_LISTENING);
+ return;
+
+fail:
+ socket_enter_stop_pre(s, false);
+}
+
static void socket_enter_start_post(Socket *s) {
int r;
assert(s);
- if ((r = socket_open_fds(s)) < 0 ||
- (r = socket_watch_fds(s)) < 0) {
+ if ((r = socket_open_fds(s)) < 0) {
log_warning("%s failed to listen on sockets: %s", unit_id(UNIT(s)), strerror(-r));
goto fail;
}
- if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST])) {
-
+ if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST]))
if ((r = socket_spawn(s, s->control_command, true, &s->control_pid)) < 0) {
log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
goto fail;
}
- socket_set_state(s, SOCKET_START_POST);
- } else
- socket_set_state(s, SOCKET_LISTENING);
+ socket_set_state(s, SOCKET_START_POST);
+
+ if (!s->control_command)
+ socket_enter_listening(s);
return;
int r;
assert(s);
- if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE])) {
-
+ if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE]))
if ((r = socket_spawn(s, s->control_command, true, &s->control_pid)) < 0)
goto fail;
- socket_set_state(s, SOCKET_START_PRE);
- } else
+ socket_set_state(s, SOCKET_START_PRE);
+
+ if (!s->control_command)
socket_enter_start_post(s);
return;
static UnitActiveState socket_active_state(Unit *u) {
assert(u);
- return state_table[SOCKET(u)->state];
+ return state_translation_table[SOCKET(u)->state];
}
-static void socket_fd_event(Unit *u, int fd, uint32_t events) {
+static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
Socket *s = SOCKET(u);
assert(s);
- log_info("Incoming traffic on %s", unit_id(u));
+ log_debug("Incoming traffic on %s", unit_id(u));
- if (events != POLLIN)
+ if (events != EPOLLIN)
socket_enter_stop_pre(s, false);
socket_enter_running(s);
assert(s);
assert(pid >= 0);
- success = code == CLD_EXITED || status == 0;
+ success = code == CLD_EXITED && status == 0;
s->failure = s->failure || !success;
assert(s->control_pid == pid);
exec_status_fill(&s->control_command->exec_status, pid, code, status);
s->control_pid = 0;
- log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code(code), status);
+ log_debug("%s control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
if (s->control_command->command_next &&
- (success || (s->state == SOCKET_EXEC_STOP_PRE || s->state == SOCKET_EXEC_STOP_POST)))
+ (success || (s->state == SOCKET_STOP_PRE || s->state == SOCKET_STOP_POST))) {
+ log_debug("%s running next command for the state %s", unit_id(u), state_string_table[s->state]);
socket_run_next(s, success);
- else {
+ } else {
/* No further commands for this step, so let's figure
* out what to do next */
+ log_debug("%s got final SIGCHLD for state %s", unit_id(u), state_string_table[s->state]);
+
switch (s->state) {
case SOCKET_START_PRE:
if (success)
- socket_enter_start_pre(s);
+ socket_enter_start_post(s);
else
socket_enter_stop_pre(s, false);
break;
case SOCKET_START_POST:
if (success)
- socket_set_state(s, SOCKET_LISTENING);
+ socket_enter_listening(s);
else
socket_enter_stop_pre(s, false);
break;
}
}
-static void socket_timer_event(Unit *u, int id, uint64_t elapsed) {
+static void socket_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
Socket *s = SOCKET(u);
assert(s);
assert(elapsed == 1);
- assert(s->timer_id == id);
+ assert(w == &s->timer_watch);
switch (s->state) {
return 0;
}
+void socket_notify_service_dead(Socket *s) {
+ assert(s);
+
+ /* The service is dead. Dang. */
+
+ if (s->state == SOCKET_RUNNING) {
+ log_debug("%s got notified about service death.", unit_id(UNIT(s)));
+ socket_enter_listening(s);
+ }
+}
+
const UnitVTable socket_vtable = {
.suffix = ".socket",
~ianmdlvl / elogind.git / blobdiff