#include "bus-error.h"
#include "logind-session.h"
+#define RELEASE_USEC (20*USEC_PER_SEC)
+
+static void session_remove_fifo(Session *s);
+
static unsigned long devt_hash_func(const void *p, const uint8_t hash_key[HASH_KEY_SIZE]) {
uint64_t u = *(const dev_t*)p;
if (s->in_gc_queue)
LIST_REMOVE(gc_queue, s->manager->session_gc_queue, s);
+ s->timer_event_source = sd_event_source_unref(s->timer_event_source);
+
session_remove_fifo(s);
session_drop_controller(s);
if (s->seat->pending_switch == s)
s->seat->pending_switch = NULL;
+ seat_evict_position(s->seat, s);
LIST_REMOVE(sessions_by_seat, s->seat->sessions, s);
}
free(s->remote_host);
free(s->remote_user);
free(s->service);
+ free(s->desktop);
hashmap_remove(s->manager->sessions, s->id);
+ s->vt_source = sd_event_source_unref(s->vt_source);
+
free(s->state_file);
free(s);
}
fprintf(f,
"# This is private data. Do not parse.\n"
- "UID=%lu\n"
+ "UID="UID_FMT"\n"
"USER=%s\n"
"ACTIVE=%i\n"
"STATE=%s\n"
"REMOTE=%i\n",
- (unsigned long) s->user->uid,
+ s->user->uid,
s->user->name,
session_is_active(s),
session_state_to_string(session_get_state(s)),
if (s->scope)
fprintf(f, "SCOPE=%s\n", s->scope);
-
if (s->scope_job)
fprintf(f, "SCOPE_JOB=%s\n", s->scope_job);
if (s->display)
fprintf(f, "DISPLAY=%s\n", s->display);
- if (s->remote_host)
- fprintf(f, "REMOTE_HOST=%s\n", s->remote_host);
+ if (s->remote_host) {
+ _cleanup_free_ char *escaped;
+
+ escaped = cescape(s->remote_host);
+ if (!escaped) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ fprintf(f, "REMOTE_HOST=%s\n", escaped);
+ }
- if (s->remote_user)
- fprintf(f, "REMOTE_USER=%s\n", s->remote_user);
+ if (s->remote_user) {
+ _cleanup_free_ char *escaped;
- if (s->service)
- fprintf(f, "SERVICE=%s\n", s->service);
+ escaped = cescape(s->remote_user);
+ if (!escaped) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ fprintf(f, "REMOTE_USER=%s\n", escaped);
+ }
+
+ if (s->service) {
+ _cleanup_free_ char *escaped;
+
+ escaped = cescape(s->service);
+ if (!escaped) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ fprintf(f, "SERVICE=%s\n", escaped);
+ }
+
+ if (s->desktop) {
+ _cleanup_free_ char *escaped;
+
+
+ escaped = cescape(s->desktop);
+ if (!escaped) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ fprintf(f, "DESKTOP=%s\n", escaped);
+ }
if (s->seat && seat_has_vts(s->seat))
fprintf(f, "VTNR=%u\n", s->vtnr);
+ if (!s->vtnr)
+ fprintf(f, "POS=%u\n", s->pos);
+
if (s->leader > 0)
- fprintf(f, "LEADER=%lu\n", (unsigned long) s->leader);
+ fprintf(f, "LEADER="PID_FMT"\n", s->leader);
if (s->audit_id > 0)
fprintf(f, "AUDIT=%"PRIu32"\n", s->audit_id);
if (dual_timestamp_is_set(&s->timestamp))
fprintf(f,
- "REALTIME=%llu\n"
- "MONOTONIC=%llu\n",
- (unsigned long long) s->timestamp.realtime,
- (unsigned long long) s->timestamp.monotonic);
+ "REALTIME="USEC_FMT"\n"
+ "MONOTONIC="USEC_FMT"\n",
+ s->timestamp.realtime,
+ s->timestamp.monotonic);
if (s->controller)
fprintf(f, "CONTROLLER=%s\n", s->controller);
finish:
if (r < 0)
- log_error("Failed to save session data for %s: %s", s->id, strerror(-r));
+ log_error("Failed to save session data %s: %s", s->state_file, strerror(-r));
return r;
}
_cleanup_free_ char *remote = NULL,
*seat = NULL,
*vtnr = NULL,
+ *pos = NULL,
*leader = NULL,
*type = NULL,
*class = NULL,
"REMOTE_HOST", &s->remote_host,
"REMOTE_USER", &s->remote_user,
"SERVICE", &s->service,
+ "DESKTOP", &s->desktop,
"VTNR", &vtnr,
+ "POS", &pos,
"LEADER", &leader,
"TYPE", &type,
"CLASS", &class,
if (!s->seat || !seat_has_vts(s->seat))
s->vtnr = 0;
+ if (pos && s->seat) {
+ unsigned int npos;
+
+ safe_atou(pos, &npos);
+ seat_claim_position(s->seat, s, npos);
+ }
+
if (leader) {
k = parse_pid(leader, &s->leader);
if (k >= 0)
trigger the EOF. */
fd = session_create_fifo(s);
- if (fd >= 0)
- close_nointr_nofail(fd);
+ safe_close(fd);
}
if (realtime) {
return 0;
}
-static int session_link_x11_socket(Session *s) {
- _cleanup_free_ char *t = NULL, *f = NULL;
- char *c;
- size_t k;
-
- assert(s);
- assert(s->user);
- assert(s->user->runtime_path);
-
- if (s->user->display)
- return 0;
-
- if (!s->display || !display_is_local(s->display))
- return 0;
-
- k = strspn(s->display+1, "0123456789");
- f = new(char, sizeof("/tmp/.X11-unix/X") + k);
- if (!f)
- return log_oom();
-
- c = stpcpy(f, "/tmp/.X11-unix/X");
- memcpy(c, s->display+1, k);
- c[k] = 0;
-
- if (access(f, F_OK) < 0) {
- log_warning("Session %s has display %s with non-existing socket %s.", s->id, s->display, f);
- return -ENOENT;
- }
-
- /* Note that this cannot be in a subdir to avoid
- * vulnerabilities since we are privileged but the runtime
- * path is owned by the user */
-
- t = strappend(s->user->runtime_path, "/X11-display");
- if (!t)
- return log_oom();
-
- if (link(f, t) < 0) {
- if (errno == EEXIST) {
- unlink(t);
-
- if (link(f, t) >= 0)
- goto done;
- }
-
- if (symlink(f, t) < 0) {
-
- if (errno == EEXIST) {
- unlink(t);
-
- if (symlink(f, t) >= 0)
- goto done;
- }
-
- log_error("Failed to link %s to %s: %m", f, t);
- return -errno;
- }
- }
-
-done:
- log_info("Linked %s to %s.", f, t);
- s->user->display = s;
-
- return 0;
-}
-
static int session_start_scope(Session *s) {
int r;
if (!s->scope) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *description = NULL;
- const char *kill_mode;
- char *scope, *job;
+ char *scope, *job = NULL;
description = strjoin("Session ", s->id, " of user ", s->user->name, NULL);
if (!description)
if (!scope)
return log_oom();
- kill_mode = manager_shall_kill(s->manager, s->user->name) ? "control-group" : "none";
-
- r = manager_start_scope(s->manager, scope, s->leader, s->user->slice, description, "systemd-user-sessions.service", kill_mode, &error, &job);
+ r = manager_start_scope(s->manager, scope, s->leader, s->user->slice, description, "systemd-logind.service", "systemd-user-sessions.service", &error, &job);
if (r < 0) {
log_error("Failed to start session scope %s: %s %s",
scope, bus_error_message(&error, r), error.name);
if (r < 0)
return r;
- log_struct(s->type == SESSION_TTY || s->type == SESSION_X11 ? LOG_INFO : LOG_DEBUG,
+ log_struct(s->class == SESSION_BACKGROUND ? LOG_DEBUG : LOG_INFO,
MESSAGE_ID(SD_MESSAGE_SESSION_START),
"SESSION_ID=%s", s->id,
"USER_ID=%s", s->user->name,
- "LEADER=%lu", (unsigned long) s->leader,
+ "LEADER="PID_FMT, s->leader,
"MESSAGE=New session %s of user %s.", s->id, s->user->name,
NULL);
- /* Create X11 symlink */
- session_link_x11_socket(s);
-
if (!dual_timestamp_is_set(&s->timestamp))
dual_timestamp_get(&s->timestamp);
s->started = true;
- /* Save session data */
+ user_elect_display(s->user);
+
+ /* Save data */
session_save(s);
user_save(s->user);
+ if (s->seat)
+ seat_save(s->seat);
+ /* Send signals */
session_send_signal(s, true);
-
+ user_send_changed(s->user, "Sessions", "Display", NULL);
if (s->seat) {
- seat_save(s->seat);
-
if (s->seat->active == s)
seat_send_changed(s->seat, "Sessions", "ActiveSession", NULL);
else
seat_send_changed(s->seat, "Sessions", NULL);
}
- user_send_changed(s->user, "Sessions", NULL);
-
return 0;
}
-static int session_stop_scope(Session *s) {
+static int session_stop_scope(Session *s, bool force) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- char *job;
+ char *job = NULL;
int r;
assert(s);
if (!s->scope)
return 0;
- r = manager_stop_unit(s->manager, s->scope, &error, &job);
- if (r < 0) {
- log_error("Failed to stop session scope: %s", bus_error_message(&error, r));
- return r;
- }
+ if (force || manager_shall_kill(s->manager, s->user->name)) {
+ r = manager_stop_unit(s->manager, s->scope, &error, &job);
+ if (r < 0) {
+ log_error("Failed to stop session scope: %s", bus_error_message(&error, r));
+ return r;
+ }
- free(s->scope_job);
- s->scope_job = job;
+ free(s->scope_job);
+ s->scope_job = job;
+ } else {
+ r = manager_abandon_scope(s->manager, s->scope, &error);
+ if (r < 0) {
+ log_error("Failed to abandon session scope: %s", bus_error_message(&error, r));
+ return r;
+ }
+ }
return 0;
}
-static int session_unlink_x11_socket(Session *s) {
- _cleanup_free_ char *t = NULL;
+int session_stop(Session *s, bool force) {
int r;
assert(s);
- assert(s->user);
- if (s->user->display != s)
- return 0;
-
- s->user->display = NULL;
-
- t = strappend(s->user->runtime_path, "/X11-display");
- if (!t)
- return log_oom();
+ if (!s->user)
+ return -ESTALE;
- r = unlink(t);
- return r < 0 ? -errno : 0;
-}
+ s->timer_event_source = sd_event_source_unref(s->timer_event_source);
-int session_stop(Session *s) {
- int r;
+ /* We are going down, don't care about FIFOs anymore */
+ session_remove_fifo(s);
- assert(s);
+ /* Kill cgroup */
+ r = session_stop_scope(s, force);
- if (!s->user)
- return -ESTALE;
+ s->stopping = true;
- /* Kill cgroup */
- r = session_stop_scope(s);
+ user_elect_display(s->user);
session_save(s);
user_save(s->user);
return -ESTALE;
if (s->started)
- log_struct(s->type == SESSION_TTY || s->type == SESSION_X11 ? LOG_INFO : LOG_DEBUG,
+ log_struct(s->class == SESSION_BACKGROUND ? LOG_DEBUG : LOG_INFO,
MESSAGE_ID(SD_MESSAGE_SESSION_STOP),
"SESSION_ID=%s", s->id,
"USER_ID=%s", s->user->name,
- "LEADER=%lu", (unsigned long) s->leader,
+ "LEADER="PID_FMT, s->leader,
"MESSAGE=Removed session %s.", s->id,
NULL);
+ s->timer_event_source = sd_event_source_unref(s->timer_event_source);
+
/* Kill session devices */
while ((sd = hashmap_first(s->devices)))
session_device_free(sd);
- /* Remove X11 symlink */
- session_unlink_x11_socket(s);
-
unlink(s->state_file);
session_add_to_gc_queue(s);
user_add_to_gc_queue(s->user);
if (s->seat->active == s)
seat_set_active(s->seat, NULL);
- seat_send_changed(s->seat, "Sessions", NULL);
seat_save(s->seat);
+ seat_send_changed(s->seat, "Sessions", NULL);
}
- user_send_changed(s->user, "Sessions", NULL);
user_save(s->user);
+ user_send_changed(s->user, "Sessions", "Display", NULL);
return r;
}
+static int release_timeout_callback(sd_event_source *es, uint64_t usec, void *userdata) {
+ Session *s = userdata;
+
+ assert(es);
+ assert(s);
+
+ session_stop(s, false);
+ return 0;
+}
+
+void session_release(Session *s) {
+ assert(s);
+
+ if (!s->started || s->stopping)
+ return;
+
+ if (!s->timer_event_source)
+ sd_event_add_time(s->manager->event,
+ &s->timer_event_source,
+ CLOCK_MONOTONIC,
+ now(CLOCK_MONOTONIC) + RELEASE_USEC, 0,
+ release_timeout_callback, s);
+}
+
bool session_is_active(Session *s) {
assert(s);
/* EOF on the FIFO means the session died abnormally. */
session_remove_fifo(s);
- session_stop(s);
+ session_stop(s, false);
return 1;
}
}
if (!s->fifo_event_source) {
- r = sd_event_add_io(s->manager->event, s->fifo_fd, 0, session_dispatch_fifo, s, &s->fifo_event_source);
+ r = sd_event_add_io(s->manager->event, &s->fifo_event_source, s->fifo_fd, 0, session_dispatch_fifo, s);
if (r < 0)
return r;
return r;
}
-void session_remove_fifo(Session *s) {
+static void session_remove_fifo(Session *s) {
assert(s);
- if (s->fifo_event_source)
- s->fifo_event_source = sd_event_source_unref(s->fifo_event_source);
-
- if (s->fifo_fd >= 0) {
- close_nointr_nofail(s->fifo_fd);
- s->fifo_fd = -1;
- }
+ s->fifo_event_source = sd_event_source_unref(s->fifo_event_source);
+ s->fifo_fd = safe_close(s->fifo_fd);
if (s->fifo_path) {
unlink(s->fifo_path);
}
bool session_check_gc(Session *s, bool drop_not_started) {
- int r;
-
assert(s);
if (drop_not_started && !s->started)
return false;
if (s->fifo_fd >= 0) {
- r = pipe_eof(s->fifo_fd);
- if (r < 0)
- return true;
-
- if (r == 0)
+ if (pipe_eof(s->fifo_fd) <= 0)
return true;
}
SessionState session_get_state(Session *s) {
assert(s);
- if (s->scope_job)
- return SESSION_OPENING;
-
- if (s->fifo_fd < 0)
+ /* always check closing first */
+ if (s->stopping || s->timer_event_source)
return SESSION_CLOSING;
+ if (s->scope_job || s->fifo_fd < 0)
+ return SESSION_OPENING;
+
if (session_is_active(s))
return SESSION_ACTIVE;
}
static int session_open_vt(Session *s) {
- char path[128];
+ char path[sizeof("/dev/tty") + DECIMAL_STR_MAX(s->vtnr)];
if (!s->vtnr)
return -1;
s->vtfd = open(path, O_RDWR | O_CLOEXEC | O_NONBLOCK | O_NOCTTY);
if (s->vtfd < 0) {
log_error("cannot open VT %s of session %s: %m", path, s->id);
- return -1;
+ return -errno;
}
return s->vtfd;
return 0;
}
-void session_mute_vt(Session *s) {
+void session_prepare_vt(Session *s) {
int vt, r;
struct vt_mode mode = { 0 };
sigset_t mask;
if (vt < 0)
return;
+ r = fchown(vt, s->user->uid, -1);
+ if (r < 0)
+ goto error;
+
r = ioctl(vt, KDSKBMODE, K_OFF);
if (r < 0)
goto error;
sigaddset(&mask, SIGUSR1);
sigprocmask(SIG_BLOCK, &mask, NULL);
- r = sd_event_add_signal(s->manager->event, SIGUSR1, session_vt_fn, s, &s->vt_source);
+ r = sd_event_add_signal(s->manager->event, &s->vt_source, SIGUSR1, session_vt_fn, s);
if (r < 0)
goto error;
}
void session_restore_vt(Session *s) {
- _cleanup_free_ char *utf8;
+ _cleanup_free_ char *utf8 = NULL;
int vt, kb = K_XLATE;
struct vt_mode mode = { 0 };
if (vt < 0)
return;
- sd_event_source_unref(s->vt_source);
- s->vt_source = NULL;
+ s->vt_source = sd_event_source_unref(s->vt_source);
ioctl(vt, KDSETMODE, KD_TEXT);
if (read_one_line_file("/sys/module/vt/parameters/default_utf8", &utf8) >= 0 && *utf8 == '1')
kb = K_UNICODE;
+
ioctl(vt, KDSKBMODE, kb);
mode.mode = VT_AUTO;
ioctl(vt, VT_SETMODE, &mode);
- close_nointr_nofail(vt);
- s->vtfd = -1;
+ fchown(vt, 0, -1);
+
+ s->vtfd = safe_close(s->vtfd);
}
bool session_is_controller(Session *s, const char *sender) {
* exits.
* If logind crashes/restarts, we restore the controller during restart
* or reset the VT in case it crashed/exited, too. */
- session_mute_vt(s);
+ session_prepare_vt(s);
return 0;
}
DEFINE_STRING_TABLE_LOOKUP(session_state, SessionState);
static const char* const session_type_table[_SESSION_TYPE_MAX] = {
+ [SESSION_UNSPECIFIED] = "unspecified",
[SESSION_TTY] = "tty",
[SESSION_X11] = "x11",
- [SESSION_UNSPECIFIED] = "unspecified"
+ [SESSION_WAYLAND] = "wayland",
+ [SESSION_MIR] = "mir",
};
DEFINE_STRING_TABLE_LOOKUP(session_type, SessionType);
~ianmdlvl / elogind.git / blobdiff