#include "special.h"
#include "systemd/sd-id128.h"
#include "systemd/sd-messages.h"
+#include "fileio-label.h"
+#include "label.h"
#define BUS_MANAGER_INTERFACE \
" <interface name=\"org.freedesktop.login1.Manager\">\n" \
" <arg name=\"id\" type=\"s\"/>\n" \
" <arg name=\"path\" type=\"o\"/>\n" \
" </signal>\n" \
- " <signal name=\"Resumed\"/>\n" \
" <signal name=\"PrepareForShutdown\">\n" \
" <arg name=\"active\" type=\"b\"/>\n" \
" </signal>\n" \
assert(property);
if (streq(property, "PreparingForShutdown"))
- b = !!(m->delayed_what & INHIBIT_SHUTDOWN);
+ b = !!(m->action_what & INHIBIT_SHUTDOWN);
else
- b = !!(m->delayed_what & INHIBIT_SLEEP);
+ b = !!(m->action_what & INHIBIT_SLEEP);
dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b);
return 0;
}
static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMessage **_reply) {
- Session *session = NULL;
- User *user = NULL;
- const char *type, *class, *seat, *tty, *display, *remote_user, *remote_host, *service;
+ const char *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *service;
uint32_t uid, leader, audit_id = 0;
dbus_bool_t remote, kill_processes, exists;
- char **controllers = NULL, **reset_controllers = NULL;
+ _cleanup_strv_free_ char **controllers = NULL, **reset_controllers = NULL;
+ _cleanup_free_ char *cgroup = NULL, *id = NULL, *p = NULL;
SessionType t;
SessionClass c;
- Seat *s;
DBusMessageIter iter;
int r;
- char *id = NULL, *p;
uint32_t vtnr = 0;
- int fifo_fd = -1;
- DBusMessage *reply = NULL;
+ _cleanup_close_ int fifo_fd = -1;
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ Session *session = NULL;
+ User *user = NULL;
+ Seat *seat = NULL;
bool b;
assert(m);
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
- dbus_message_iter_get_basic(&iter, &seat);
+ dbus_message_iter_get_basic(&iter, &cseat);
- if (isempty(seat))
- s = NULL;
+ if (isempty(cseat))
+ seat = NULL;
else {
- s = hashmap_get(m->seats, seat);
- if (!s)
+ seat = hashmap_get(m->seats, cseat);
+ if (!seat)
return -ENOENT;
}
if (tty_is_vc(tty)) {
int v;
- if (!s)
- s = m->vtconsole;
- else if (s != m->vtconsole)
+ if (!seat)
+ seat = m->vtconsole;
+ else if (seat != m->vtconsole)
return -EINVAL;
v = vtnr_from_tty(tty);
return -EINVAL;
} else if (tty_is_console(tty)) {
- if (!s)
- s = m->vtconsole;
- else if (s != m->vtconsole)
+ if (!seat)
+ seat = m->vtconsole;
+ else if (seat != m->vtconsole)
return -EINVAL;
if (vtnr != 0)
return -EINVAL;
-
}
- if (s) {
- if (seat_can_multi_session(s)) {
+ if (seat) {
+ if (seat_can_multi_session(seat)) {
if (vtnr > 63)
return -EINVAL;
} else {
dbus_message_iter_get_basic(&iter, &kill_processes);
- r = manager_add_user_by_uid(m, uid, &user);
+ r = cg_pid_get_cgroup(leader, NULL, &cgroup);
if (r < 0)
goto fail;
- audit_session_from_pid(leader, &audit_id);
-
- if (audit_id > 0) {
- asprintf(&id, "%lu", (unsigned long) audit_id);
+ r = manager_get_session_by_cgroup(m, cgroup, &session);
+ if (r < 0)
+ goto fail;
- if (!id) {
- r = -ENOMEM;
+ if (session) {
+ fifo_fd = session_create_fifo(session);
+ if (fifo_fd < 0) {
+ r = fifo_fd;
goto fail;
}
- session = hashmap_get(m->sessions, id);
+ /* Session already exists, client is probably
+ * something like "su" which changes uid but
+ * is still the same audit session */
- if (session) {
- free(id);
+ reply = dbus_message_new_method_return(message);
+ if (!reply) {
+ r = -ENOMEM;
+ goto fail;
+ }
- fifo_fd = session_create_fifo(session);
- if (fifo_fd < 0) {
- r = fifo_fd;
- goto fail;
- }
+ p = session_bus_path(session);
+ if (!p) {
+ r = -ENOMEM;
+ goto fail;
+ }
- /* Session already exists, client is probably
- * something like "su" which changes uid but
- * is still the same audit session */
+ cseat = session->seat ? session->seat->id : "";
+ vtnr = session->vtnr;
+ exists = true;
- reply = dbus_message_new_method_return(message);
- if (!reply) {
- r = -ENOMEM;
- goto fail;
- }
+ b = dbus_message_append_args(
+ reply,
+ DBUS_TYPE_STRING, &session->id,
+ DBUS_TYPE_OBJECT_PATH, &p,
+ DBUS_TYPE_STRING, &session->user->runtime_path,
+ DBUS_TYPE_UNIX_FD, &fifo_fd,
+ DBUS_TYPE_STRING, &cseat,
+ DBUS_TYPE_UINT32, &vtnr,
+ DBUS_TYPE_BOOLEAN, &exists,
+ DBUS_TYPE_INVALID);
+ if (!b) {
+ r = -ENOMEM;
+ goto fail;
+ }
- p = session_bus_path(session);
- if (!p) {
- r = -ENOMEM;
- goto fail;
- }
+ *_reply = reply;
+ reply = NULL;
- seat = session->seat ? session->seat->id : "";
- vtnr = session->vtnr;
- exists = true;
-
- b = dbus_message_append_args(
- reply,
- DBUS_TYPE_STRING, &session->id,
- DBUS_TYPE_OBJECT_PATH, &p,
- DBUS_TYPE_STRING, &session->user->runtime_path,
- DBUS_TYPE_UNIX_FD, &fifo_fd,
- DBUS_TYPE_STRING, &seat,
- DBUS_TYPE_UINT32, &vtnr,
- DBUS_TYPE_BOOLEAN, &exists,
- DBUS_TYPE_INVALID);
- free(p);
+ return 0;
+ }
- if (!b) {
- r = -ENOMEM;
- goto fail;
- }
+ audit_session_from_pid(leader, &audit_id);
+ if (audit_id > 0) {
+ /* Keep our session IDs and the audit session IDs in sync */
- close_nointr_nofail(fifo_fd);
- *_reply = reply;
+ if (asprintf(&id, "%lu", (unsigned long) audit_id) < 0) {
+ r = -ENOMEM;
+ goto fail;
+ }
- strv_free(controllers);
- strv_free(reset_controllers);
+ /* Wut? There's already a session by this name and we
+ * didn't find it above? Weird, then let's not trust
+ * the audit data and let's better register a new
+ * ID */
+ if (hashmap_get(m->sessions, id)) {
+ audit_id = 0;
- return 0;
+ free(id);
+ id = NULL;
}
+ }
- } else {
+ if (!id) {
do {
free(id);
id = NULL;
} while (hashmap_get(m->sessions, id));
}
+ r = manager_add_user_by_uid(m, uid, &user);
+ if (r < 0)
+ goto fail;
+
r = manager_add_session(m, user, id, &session);
- free(id);
if (r < 0)
goto fail;
goto fail;
}
- if (s) {
- r = seat_attach_session(s, session);
+ if (seat) {
+ r = seat_attach_session(seat, session);
if (r < 0)
goto fail;
}
goto fail;
}
- seat = s ? s->id : "";
+ cseat = seat ? seat->id : "";
exists = false;
b = dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &p,
DBUS_TYPE_STRING, &session->user->runtime_path,
DBUS_TYPE_UNIX_FD, &fifo_fd,
- DBUS_TYPE_STRING, &seat,
+ DBUS_TYPE_STRING, &cseat,
DBUS_TYPE_UINT32, &vtnr,
DBUS_TYPE_BOOLEAN, &exists,
DBUS_TYPE_INVALID);
- free(p);
if (!b) {
r = -ENOMEM;
goto fail;
}
- close_nointr_nofail(fifo_fd);
*_reply = reply;
+ reply = NULL;
return 0;
fail:
- strv_free(controllers);
- strv_free(reset_controllers);
-
if (session)
session_add_to_gc_queue(session);
if (user)
user_add_to_gc_queue(user);
- if (fifo_fd >= 0)
- close_nointr_nofail(fifo_fd);
-
- if (reply)
- dbus_message_unref(reply);
-
return r;
}
-static int bus_manager_inhibit(Manager *m, DBusConnection *connection, DBusMessage *message, DBusError *error, DBusMessage **_reply) {
+static int bus_manager_inhibit(
+ Manager *m,
+ DBusConnection *connection,
+ DBusMessage *message,
+ DBusError *error,
+ DBusMessage **_reply) {
+
Inhibitor *i = NULL;
char *id = NULL;
const char *who, *why, *what, *mode;
InhibitMode mm;
unsigned long ul;
int r, fifo_fd = -1;
- DBusMessage *reply = NULL;
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
assert(m);
assert(connection);
goto fail;
}
+ /* Don't allow taking delay locks while we are already
+ * executing the operation. We shouldn't create the impression
+ * that the lock was successful if the machine is about to go
+ * down/suspend any moment. */
+ if (m->action_what & w) {
+ r = -EALREADY;
+ goto fail;
+ }
+
r = verify_polkit(connection, message,
w == INHIBIT_SHUTDOWN ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
w == INHIBIT_SLEEP ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep" : "org.freedesktop.login1.inhibit-delay-sleep") :
close_nointr_nofail(fifo_fd);
*_reply = reply;
+ reply = NULL;
inhibitor_start(i);
if (fifo_fd >= 0)
close_nointr_nofail(fifo_fd);
- if (reply)
- dbus_message_unref(reply);
-
return r;
}
static int attach_device(Manager *m, const char *seat, const char *sysfs) {
struct udev_device *d;
- char *rule = NULL, *file = NULL;
+ char _cleanup_free_ *rule = NULL, *file = NULL;
const char *id_for_seat;
int r;
}
mkdir_p_label("/etc/udev/rules.d", 0755);
- r = write_one_line_file_atomic(file, rule);
+ label_init("/etc");
+ r = write_one_line_file_atomic_label(file, rule);
if (r < 0)
goto finish;
r = trigger_device(m, d);
finish:
- free(rule);
- free(file);
-
if (d)
udev_device_unref(d);
}
static int flush_devices(Manager *m) {
- DIR *d;
+ DIR _cleanup_closedir_ *d;
assert(m);
if (unlinkat(dirfd(d), de->d_name, 0) < 0)
log_warning("Failed to unlink %s: %m", de->d_name);
}
-
- closedir(d);
}
return trigger_device(m, NULL);
return false;
}
-static int send_start_unit(Manager *m, const char *unit_name, bool send_resumed, DBusError *error) {
+static int bus_manager_log_shutdown(
+ Manager *m,
+ InhibitWhat w,
+ const char *unit_name) {
+
+ const char *p, *q;
+
+ assert(m);
+ assert(unit_name);
+
+ if (w != INHIBIT_SHUTDOWN)
+ return 0;
+
+ if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
+ p = "MESSAGE=System is powering down.";
+ q = "SHUTDOWN=power-off";
+ } else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
+ p = "MESSAGE=System is halting.";
+ q = "SHUTDOWN=halt";
+ } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
+ p = "MESSAGE=System is rebooting.";
+ q = "SHUTDOWN=reboot";
+ } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {
+ p = "MESSAGE=System is rebooting with kexec.";
+ q = "SHUTDOWN=kexec";
+ } else {
+ p = "MESSAGE=System is shutting down.";
+ q = NULL;
+ }
+
+ return log_struct(LOG_NOTICE, MESSAGE_ID(SD_MESSAGE_SHUTDOWN),
+ p,
+ q, NULL);
+}
+
+static int execute_shutdown_or_sleep(
+ Manager *m,
+ InhibitWhat w,
+ const char *unit_name,
+ DBusError *error) {
+
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
- const char *mode = "replace", *p;
+ const char *mode = "replace-irreversibly", *p;
int r;
char *c;
assert(m);
+ assert(w >= 0);
+ assert(w < _INHIBIT_WHAT_MAX);
assert(unit_name);
+ bus_manager_log_shutdown(m, w, unit_name);
+
r = bus_method_call_with_reply(
m->bus,
"org.freedesktop.systemd1",
if (!c)
return -ENOMEM;
+ m->action_unit = unit_name;
free(m->action_job);
m->action_job = c;
- m->send_resumed_after_action_job = send_resumed;
+ m->action_what = w;
return 0;
}
-static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
- static const char * const signal_name[_INHIBIT_WHAT_MAX] = {
- [INHIBIT_SHUTDOWN] = "PrepareForShutdown",
- [INHIBIT_SLEEP] = "PrepareForSleep"
- };
-
- dbus_bool_t active = _active;
- _cleanup_dbus_message_unref_ DBusMessage *message = NULL;
-
- assert(m);
- assert(w >= 0);
- assert(w < _INHIBIT_WHAT_MAX);
- assert(signal_name[w]);
-
- message = dbus_message_new_signal("/org/freedesktop/login1", "org.freedesktop.login1.Manager", signal_name[w]);
- if (!message)
- return -ENOMEM;
-
- if (!dbus_message_append_args(message, DBUS_TYPE_BOOLEAN, &active, DBUS_TYPE_INVALID) ||
- !dbus_connection_send(m->bus, message, NULL))
- return -ENOMEM;
-
- return 0;
-}
+static int delay_shutdown_or_sleep(
+ Manager *m,
+ InhibitWhat w,
+ const char *unit_name) {
-static int delay_shutdown_or_sleep(Manager *m, InhibitWhat w, const char *unit_name) {
assert(m);
assert(w >= 0);
assert(w < _INHIBIT_WHAT_MAX);
+ assert(unit_name);
- /* Tell everybody to prepare for shutdown/sleep */
- send_prepare_for(m, w, true);
-
- /* Update timestamp for timeout */
- if (!m->delayed_unit)
- m->delayed_timestamp = now(CLOCK_MONOTONIC);
-
- /* Remember what we want to do, possibly overriding what kind
- * of unit we previously queued. */
- m->delayed_unit = unit_name;
- m->delayed_what = w;
+ m->action_timestamp = now(CLOCK_MONOTONIC);
+ m->action_unit = unit_name;
+ m->action_what = w;
return 0;
}
bool multiple_sessions, challenge, blocked, b;
const char *result;
- DBusMessage *reply = NULL;
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
int r;
unsigned long ul;
reply,
DBUS_TYPE_STRING, &result,
DBUS_TYPE_INVALID);
- if (!b) {
- dbus_message_unref(reply);
+ if (!b)
return -ENOMEM;
- }
*_reply = reply;
+ reply = NULL;
return 0;
}
-static int bus_manager_log_shutdown(
- Manager *m,
- InhibitWhat w,
- const char *unit_name) {
+static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
+ static const char * const signal_name[_INHIBIT_WHAT_MAX] = {
+ [INHIBIT_SHUTDOWN] = "PrepareForShutdown",
+ [INHIBIT_SLEEP] = "PrepareForSleep"
+ };
- const char *p, *q;
+ dbus_bool_t active = _active;
+ _cleanup_dbus_message_unref_ DBusMessage *message = NULL;
assert(m);
- assert(unit_name);
+ assert(w >= 0);
+ assert(w < _INHIBIT_WHAT_MAX);
+ assert(signal_name[w]);
- if (w != INHIBIT_SHUTDOWN)
- return 0;
+ message = dbus_message_new_signal("/org/freedesktop/login1", "org.freedesktop.login1.Manager", signal_name[w]);
+ if (!message)
+ return -ENOMEM;
- if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
- p = "MESSAGE=System is powering down.";
- q = "SHUTDOWN=power-off";
- } else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
- p = "MESSAGE=System is halting.";
- q = "SHUTDOWN=halt";
- } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
- p = "MESSAGE=System is rebooting.";
- q = "SHUTDOWN=reboot";
- } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {
- p = "MESSAGE=System is rebooting with kexec.";
- q = "SHUTDOWN=kexec";
- } else {
- p = "MESSAGE=System is shutting down.";
- q = NULL;
- }
+ if (!dbus_message_append_args(message, DBUS_TYPE_BOOLEAN, &active, DBUS_TYPE_INVALID) ||
+ !dbus_connection_send(m->bus, message, NULL))
+ return -ENOMEM;
- return log_struct(LOG_NOTICE, MESSAGE_ID(SD_MESSAGE_SHUTDOWN),
- p,
- q, NULL);
+ return 0;
}
int bus_manager_shutdown_or_sleep_now_or_later(
assert(w <= _INHIBIT_WHAT_MAX);
assert(!m->action_job);
+ /* Tell everybody to prepare for shutdown/sleep */
+ send_prepare_for(m, w, true);
+
delayed =
m->inhibit_delay_max > 0 &&
manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0);
/* Shutdown is delayed, keep in mind what we
* want to do, and start a timeout */
r = delay_shutdown_or_sleep(m, w, unit_name);
- else {
- bus_manager_log_shutdown(m, w, unit_name);
-
+ else
/* Shutdown is not delayed, execute it
* immediately */
- r = send_start_unit(m, unit_name, w & INHIBIT_SLEEP, error);
- }
+ r = execute_shutdown_or_sleep(m, w, unit_name, error);
return r;
}
assert(error);
assert(_reply);
- if (m->action_job || m->delayed_unit)
+ /* Don't allow multiple jobs being executed at the same time */
+ if (m->action_what)
return -EALREADY;
if (!dbus_message_get_args(
Manager *m = userdata;
DBusError error;
- DBusMessage *reply = NULL;
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
int r;
assert(connection);
if (reply) {
if (!bus_maybe_send_reply(connection, message, reply))
goto oom;
-
- dbus_message_unref(reply);
}
return DBUS_HANDLER_RESULT_HANDLED;
oom:
- if (reply)
- dbus_message_unref(reply);
-
dbus_error_free(&error);
return DBUS_HANDLER_RESULT_NEED_MEMORY;
DBUS_TYPE_STRING, &result,
DBUS_TYPE_INVALID))
log_error("Failed to parse JobRemoved message: %s", bus_error_message(&error));
+
else if (m->action_job && streq(m->action_job, path)) {
- log_info("Action is complete, result is '%s'.", result);
- free(m->action_job);
- m->action_job = NULL;
- if (m->send_resumed_after_action_job) {
- _cleanup_dbus_message_unref_ DBusMessage *s = NULL;
+ log_info("Operation finished.");
- s = dbus_message_new_signal("/org/freedesktop/login1", "org.freedesktop.login1.Manager", "Resumed");
- if (s)
- dbus_connection_send(m->bus, s, NULL);
- }
+ /* Tell people that they now may take a lock again */
+ send_prepare_for(m, m->action_what, false);
+
+ free(m->action_job);
+ m->action_job = NULL;
+ m->action_unit = NULL;
+ m->action_what = 0;
}
}
}
int manager_send_changed(Manager *manager, const char *properties) {
- DBusMessage *m;
- int r = -ENOMEM;
+ _cleanup_dbus_message_unref_ DBusMessage *m = NULL;
assert(manager);
- m = bus_properties_changed_new("/org/freedesktop/login1", "org.freedesktop.login1.Manager", properties);
+ m = bus_properties_changed_new("/org/freedesktop/login1",
+ "org.freedesktop.login1.Manager",
+ properties);
if (!m)
- goto finish;
+ return -ENOMEM;
if (!dbus_connection_send(manager->bus, m, NULL))
- goto finish;
-
- r = 0;
-
-finish:
- if (m)
- dbus_message_unref(m);
+ return -ENOMEM;
- return r;
+ return 0;
}
int manager_dispatch_delayed(Manager *manager) {
- const char *unit_name;
DBusError error;
- bool delayed;
int r;
assert(manager);
- if (!manager->delayed_unit)
+ if (!manager->action_unit || manager->action_job)
return 0;
/* Continue delay? */
- delayed =
- manager->delayed_timestamp + manager->inhibit_delay_max > now(CLOCK_MONOTONIC) &&
- manager_is_inhibited(manager, manager->delayed_what, INHIBIT_DELAY, NULL, false, false, 0);
- if (delayed)
- return 0;
-
- bus_manager_log_shutdown(manager, manager->delayed_what, manager->delayed_unit);
+ if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0)) {
- /* Tell people about it */
- send_prepare_for(manager, manager->delayed_what, false);
+ if (manager->action_timestamp + manager->inhibit_delay_max > now(CLOCK_MONOTONIC))
+ return 0;
- /* Reset delay data */
- unit_name = manager->delayed_unit;
- manager->delayed_unit = NULL;
+ log_info("Delay lock is active but inhibitor timeout is reached.");
+ }
- /* Actually do the shutdown */
+ /* Actually do the operation */
dbus_error_init(&error);
- r = send_start_unit(manager, unit_name, manager->delayed_what & INHIBIT_SLEEP, &error);
+ r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error);
if (r < 0) {
log_warning("Failed to send delayed message: %s", bus_error_message_or_strerror(&error, -r));
dbus_error_free(&error);
+
+ manager->action_unit = NULL;
+ manager->action_what = 0;
return r;
}
~ianmdlvl / elogind.git / blobdiff