Copyright 2011 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
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 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.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <sys/epoll.h>
#include <fcntl.h>
-#include "logind-session.h"
+#include "systemd/sd-id128.h"
+#include "systemd/sd-messages.h"
#include "strv.h"
#include "util.h"
#include "mkdir.h"
+#include "path-util.h"
#include "cgroup-util.h"
-
-#define IDLE_THRESHOLD_USEC (5*USEC_PER_MINUTE)
+#include "logind-session.h"
+#include "fileio.h"
Session* session_new(Manager *m, User *u, const char *id) {
Session *s;
return NULL;
}
- s->id = file_name_from_path(s->state_file);
+ s->id = path_get_file_name(s->state_file);
if (hashmap_put(m->sessions, s->id, s) < 0) {
- free(s->id);
+ free(s->state_file);
free(s);
return NULL;
}
}
if (s->cgroup_path)
- hashmap_remove(s->manager->cgroups, s->cgroup_path);
+ hashmap_remove(s->manager->session_cgroups, s->cgroup_path);
free(s->cgroup_path);
strv_free(s->controllers);
free(s->service);
hashmap_remove(s->manager->sessions, s->id);
-
session_remove_fifo(s);
free(s->state_file);
if (!s->started)
return 0;
- r = safe_mkdir("/run/systemd/sessions", 0755, 0, 0);
+ r = mkdir_safe_label("/run/systemd/sessions", 0755, 0, 0);
if (r < 0)
goto finish;
"UID=%lu\n"
"USER=%s\n"
"ACTIVE=%i\n"
+ "STATE=%s\n"
"REMOTE=%i\n"
"KILL_PROCESSES=%i\n",
(unsigned long) s->user->uid,
s->user->name,
session_is_active(s),
+ session_state_to_string(session_get_state(s)),
s->remote,
s->kill_processes);
}
if (leader) {
- pid_t pid;
-
- k = parse_pid(leader, &pid);
- if (k >= 0 && pid >= 1) {
- s->leader = pid;
-
- audit_session_from_pid(pid, &s->audit_id);
- }
+ k = parse_pid(leader, &s->leader);
+ if (k >= 0)
+ audit_session_from_pid(s->leader, &s->audit_id);
}
if (type) {
close_nointr_nofail(fd);
}
-
finish:
free(remote);
free(kill_processes);
free(vtnr);
free(leader);
free(audit_id);
+ free(class);
return r;
}
k = strspn(s->display+1, "0123456789");
f = new(char, sizeof("/tmp/.X11-unix/X") + k);
- if (!f) {
- log_error("Out of memory");
- return -ENOMEM;
- }
+ 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 nonexisting socket %s.", s->id, s->display, f);
+ log_warning("Session %s has display %s with non-existing socket %s.", s->id, s->display, f);
free(f);
return -ENOENT;
}
t = strappend(s->user->runtime_path, "/X11-display");
if (!t) {
- log_error("Out of memory");
free(f);
- return -ENOMEM;
+ return log_oom();
}
if (link(f, t) < 0) {
assert(s->user->cgroup_path);
if (!s->cgroup_path) {
- if (asprintf(&p, "%s/%s", s->user->cgroup_path, s->id) < 0) {
- log_error("Out of memory");
- return -ENOMEM;
- }
+ if (asprintf(&p, "%s/%s", s->user->cgroup_path, s->id) < 0)
+ return log_oom();
} else
p = s->cgroup_path;
}
}
- hashmap_put(s->manager->cgroups, s->cgroup_path, s);
+ r = hashmap_put(s->manager->session_cgroups, s->cgroup_path, s);
+ if (r < 0)
+ log_warning("Failed to create mapping between cgroup and session");
return 0;
}
if (r < 0)
return r;
- log_full(s->type == SESSION_TTY || s->type == SESSION_X11 ? LOG_INFO : LOG_DEBUG,
- "New session %s of user %s.", s->id, s->user->name);
+ log_struct(s->type == SESSION_TTY || s->type == SESSION_X11 ? LOG_INFO : LOG_DEBUG,
+ MESSAGE_ID(SD_MESSAGE_SESSION_START),
+ "SESSION_ID=%s", s->id,
+ "USER_ID=%s", s->user->name,
+ "LEADER=%lu", (unsigned long) s->leader,
+ "MESSAGE=New session %s of user %s.", s->id, s->user->name,
+ NULL);
/* Create cgroup */
r = session_create_cgroup(s);
STRV_FOREACH(k, s->user->manager->controllers)
cg_trim(*k, s->cgroup_path, true);
- hashmap_remove(s->manager->cgroups, s->cgroup_path);
+ hashmap_remove(s->manager->session_cgroups, s->cgroup_path);
free(s->cgroup_path);
s->cgroup_path = NULL;
s->user->display = NULL;
t = strappend(s->user->runtime_path, "/X11-display");
- if (!t) {
- log_error("Out of memory");
- return -ENOMEM;
- }
+ if (!t)
+ return log_oom();
r = unlink(t);
free(t);
assert(s);
if (s->started)
- log_full(s->type == SESSION_TTY || s->type == SESSION_X11 ? LOG_INFO : LOG_DEBUG,
- "Removed session %s.", s->id);
+ log_struct(s->type == SESSION_TTY || s->type == SESSION_X11 ? LOG_INFO : LOG_DEBUG,
+ MESSAGE_ID(SD_MESSAGE_SESSION_STOP),
+ "SESSION_ID=%s", s->id,
+ "USER_ID=%s", s->user->name,
+ "LEADER=%lu", (unsigned long) s->leader,
+ "MESSAGE=Removed session %s.", s->id,
+ NULL);
/* Kill cgroup */
k = session_terminate_cgroup(s);
if (s->started)
session_send_signal(s, false);
+ s->started = false;
+
if (s->seat) {
if (s->seat->active == s)
seat_set_active(s->seat, NULL);
seat_send_changed(s->seat, "Sessions\0");
+ seat_save(s->seat);
}
user_send_changed(s->user, "Sessions\0");
-
- s->started = false;
+ user_save(s->user);
return r;
}
return s->seat->active == s;
}
-int session_get_idle_hint(Session *s, dual_timestamp *t) {
- char *p;
+static int get_tty_atime(const char *tty, usec_t *atime) {
+ _cleanup_free_ char *p = NULL;
struct stat st;
- usec_t u, n;
- bool b;
- int k;
+
+ assert(tty);
+ assert(atime);
+
+ if (!path_is_absolute(tty)) {
+ p = strappend("/dev/", tty);
+ if (!p)
+ return -ENOMEM;
+
+ tty = p;
+ } else if (!path_startswith(tty, "/dev/"))
+ return -ENOENT;
+
+ if (lstat(tty, &st) < 0)
+ return -errno;
+
+ *atime = timespec_load(&st.st_atim);
+ return 0;
+}
+
+static int get_process_ctty_atime(pid_t pid, usec_t *atime) {
+ _cleanup_free_ char *p = NULL;
+ int r;
+
+ assert(pid > 0);
+ assert(atime);
+
+ r = get_ctty(pid, NULL, &p);
+ if (r < 0)
+ return r;
+
+ return get_tty_atime(p, atime);
+}
+
+int session_get_idle_hint(Session *s, dual_timestamp *t) {
+ usec_t atime = 0, n;
+ int r;
assert(s);
+ /* Explicit idle hint is set */
if (s->idle_hint) {
if (t)
*t = s->idle_hint_timestamp;
return s->idle_hint;
}
- if (isempty(s->tty))
+ /* Graphical sessions should really implement a real
+ * idle hint logic */
+ if (s->display)
goto dont_know;
- if (s->tty[0] != '/') {
- p = strappend("/dev/", s->tty);
- if (!p)
- return -ENOMEM;
- } else
- p = NULL;
+ /* For sessions with an explicitly configured tty, let's check
+ * its atime */
+ if (s->tty) {
+ r = get_tty_atime(s->tty, &atime);
+ if (r >= 0)
+ goto found_atime;
+ }
- if (!startswith(p ? p : s->tty, "/dev/")) {
- free(p);
- goto dont_know;
+ /* For sessions with a leader but no explicitly configured
+ * tty, let's check the controlling tty of the leader */
+ if (s->leader > 0) {
+ r = get_process_ctty_atime(s->leader, &atime);
+ if (r >= 0)
+ goto found_atime;
}
- k = lstat(p ? p : s->tty, &st);
- free(p);
+ /* For other TTY sessions, let's find the most recent atime of
+ * the ttys of any of the processes of the session */
+ if (s->cgroup_path) {
+ _cleanup_fclose_ FILE *f = NULL;
- if (k < 0)
- goto dont_know;
+ if (cg_enumerate_processes(SYSTEMD_CGROUP_CONTROLLER, s->cgroup_path, &f) >= 0) {
+ pid_t pid;
- u = timespec_load(&st.st_atim);
- n = now(CLOCK_REALTIME);
- b = u + IDLE_THRESHOLD_USEC < n;
+ atime = 0;
+ while (cg_read_pid(f, &pid) > 0) {
+ usec_t a;
- if (t)
- dual_timestamp_from_realtime(t, u + b ? IDLE_THRESHOLD_USEC : 0);
+ if (get_process_ctty_atime(pid, &a) >= 0)
+ if (atime == 0 || atime < a)
+ atime = a;
+ }
- return b;
+ if (atime != 0)
+ goto found_atime;
+ }
+ }
dont_know:
if (t)
*t = s->idle_hint_timestamp;
return 0;
+
+found_atime:
+ if (t)
+ dual_timestamp_from_realtime(t, atime);
+
+ n = now(CLOCK_REALTIME);
+
+ if (s->manager->idle_action_usec <= 0)
+ return 0;
+
+ return atime + s->manager->idle_action_usec <= n;
}
void session_set_idle_hint(Session *s, bool b) {
/* Create FIFO */
if (!s->fifo_path) {
- r = safe_mkdir("/run/systemd/sessions", 0755, 0, 0);
+ r = mkdir_safe_label("/run/systemd/sessions", 0755, 0, 0);
if (r < 0)
return r;
/* Open reading side */
if (s->fifo_fd < 0) {
- struct epoll_event ev;
+ struct epoll_event ev = {};
s->fifo_fd = open(s->fifo_path, O_RDONLY|O_CLOEXEC|O_NDELAY);
if (s->fifo_fd < 0)
return -errno;
- r = hashmap_put(s->manager->fifo_fds, INT_TO_PTR(s->fifo_fd + 1), s);
+ r = hashmap_put(s->manager->session_fds, INT_TO_PTR(s->fifo_fd + 1), s);
if (r < 0)
return r;
- zero(ev);
ev.events = 0;
- ev.data.u32 = FD_FIFO_BASE + s->fifo_fd;
+ ev.data.u32 = FD_OTHER_BASE + s->fifo_fd;
if (epoll_ctl(s->manager->epoll_fd, EPOLL_CTL_ADD, s->fifo_fd, &ev) < 0)
return -errno;
assert(s);
if (s->fifo_fd >= 0) {
- assert_se(hashmap_remove(s->manager->fifo_fds, INT_TO_PTR(s->fifo_fd + 1)) == s);
+ assert_se(hashmap_remove(s->manager->session_fds, INT_TO_PTR(s->fifo_fd + 1)) == s);
assert_se(epoll_ctl(s->manager->epoll_fd, EPOLL_CTL_DEL, s->fifo_fd, NULL) == 0);
close_nointr_nofail(s->fifo_fd);
s->fifo_fd = -1;
+
+ session_save(s);
+ user_save(s->user);
}
if (s->fifo_path) {
s->in_gc_queue = true;
}
+SessionState session_get_state(Session *s) {
+ assert(s);
+
+ if (s->fifo_fd < 0)
+ return SESSION_CLOSING;
+
+ if (session_is_active(s))
+ return SESSION_ACTIVE;
+
+ return SESSION_ONLINE;
+}
+
int session_kill(Session *s, KillWho who, int signo) {
int r = 0;
Set *pid_set = NULL;
return r;
}
+static const char* const session_state_table[_SESSION_TYPE_MAX] = {
+ [SESSION_ONLINE] = "online",
+ [SESSION_ACTIVE] = "active",
+ [SESSION_CLOSING] = "closing"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(session_state, SessionState);
+
static const char* const session_type_table[_SESSION_TYPE_MAX] = {
[SESSION_TTY] = "tty",
[SESSION_X11] = "x11",
static const char* const session_class_table[_SESSION_CLASS_MAX] = {
[SESSION_USER] = "user",
[SESSION_GREETER] = "greeter",
- [SESSION_LOCK_SCREEN] = "lock-screen"
+ [SESSION_LOCK_SCREEN] = "lock-screen",
+ [SESSION_BACKGROUND] = "background"
};
DEFINE_STRING_TABLE_LOOKUP(session_class, SessionClass);
~ianmdlvl / elogind.git / blobdiff