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import systemd-239-68.el8

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CentOS Sources 2022-09-29 22:10:30 +00:00 committed by root
parent 3903595abc
commit c1ce3660b6
7 changed files with 1058 additions and 1 deletions
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377
SOURCES/0826-logind-optionally-watch-utmp-for-login-data.patch Normal file
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@ -0,0 +1,377 @@
From d897789b4dc7d115c915842eabf33ed3de20110a Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 7 Aug 2018 13:49:34 +0200
Subject: [PATCH] logind: optionally watch utmp for login data
This allows us to determine the TTY an ssh session is for, which is
useful to to proper idle detection for ssh sessions.
Fixes: #9622
(cherry picked from commit 3d0ef5c7e00155bc74f6f71c34cad518a4ff56ba)
Related: #2122288
---
src/login/logind-core.c | 143 +++++++++++++++++++++++++++++++++++++
src/login/logind-dbus.c | 5 ++
src/login/logind-session.c | 24 +++++++
src/login/logind-session.h | 14 +++-
src/login/logind.c | 10 +++
src/login/logind.h | 8 +++
6 files changed, 203 insertions(+), 1 deletion(-)
diff --git a/src/login/logind-core.c b/src/login/logind-core.c
index 0ed812a2c8..7e33f8e6aa 100644
--- a/src/login/logind-core.c
+++ b/src/login/logind-core.c
@@ -5,6 +5,9 @@
#include <sys/ioctl.h>
#include <sys/types.h>
#include <linux/vt.h>
+#if ENABLE_UTMP
+#include <utmpx.h>
+#endif
#include "alloc-util.h"
#include "bus-error.h"
@@ -14,6 +17,7 @@
#include "fd-util.h"
#include "logind.h"
#include "parse-util.h"
+#include "path-util.h"
#include "process-util.h"
#include "strv.h"
#include "terminal-util.h"
@@ -692,3 +696,142 @@ bool manager_all_buttons_ignored(Manager *m) {
return true;
}
+
+int manager_read_utmp(Manager *m) {
+#if ENABLE_UTMP
+ int r;
+
+ assert(m);
+
+ if (utmpxname(_PATH_UTMPX) < 0)
+ return log_error_errno(errno, "Failed to set utmp path to " _PATH_UTMPX ": %m");
+
+ setutxent();
+
+ for (;;) {
+ _cleanup_free_ char *t = NULL;
+ struct utmpx *u;
+ const char *c;
+ Session *s;
+
+ errno = 0;
+ u = getutxent();
+ if (!u) {
+ if (errno != 0)
+ log_warning_errno(errno, "Failed to read " _PATH_UTMPX ", ignoring: %m");
+ r = 0;
+ break;
+ }
+
+ if (u->ut_type != USER_PROCESS)
+ continue;
+
+ if (!pid_is_valid(u->ut_pid))
+ continue;
+
+ t = strndup(u->ut_line, sizeof(u->ut_line));
+ if (!t) {
+ r = log_oom();
+ break;
+ }
+
+ c = path_startswith(t, "/dev/");
+ if (c) {
+ r = free_and_strdup(&t, c);
+ if (r < 0) {
+ log_oom();
+ break;
+ }
+ }
+
+ if (isempty(t))
+ continue;
+
+ s = hashmap_get(m->sessions_by_leader, PID_TO_PTR(u->ut_pid));
+ if (!s)
+ continue;
+
+ if (s->tty_validity == TTY_FROM_UTMP && !streq_ptr(s->tty, t)) {
+ /* This may happen on multiplexed SSH connection (i.e. 'SSH connection sharing'). In
+ * this case PAM and utmp sessions don't match. In such a case let's invalidate the TTY
+ * information and never acquire it again. */
+
+ s->tty = mfree(s->tty);
+ s->tty_validity = TTY_UTMP_INCONSISTENT;
+ log_debug("Session '%s' has inconsistent TTY information, dropping TTY information.", s->id);
+ continue;
+ }
+
+ /* Never override what we figured out once */
+ if (s->tty || s->tty_validity >= 0)
+ continue;
+
+ s->tty = TAKE_PTR(t);
+ s->tty_validity = TTY_FROM_UTMP;
+ log_debug("Acquired TTY information '%s' from utmp for session '%s'.", s->tty, s->id);
+ }
+
+ endutxent();
+ return r;
+#else
+ return 0
+#endif
+}
+
+#if ENABLE_UTMP
+static int manager_dispatch_utmp(sd_event_source *s, const struct inotify_event *event, void *userdata) {
+ Manager *m = userdata;
+
+ assert(m);
+
+ /* If there's indication the file itself might have been removed or became otherwise unavailable, then let's
+ * reestablish the watch on whatever there's now. */
+ if ((event->mask & (IN_ATTRIB|IN_DELETE_SELF|IN_MOVE_SELF|IN_Q_OVERFLOW|IN_UNMOUNT)) != 0)
+ manager_connect_utmp(m);
+
+ (void) manager_read_utmp(m);
+ return 0;
+}
+#endif
+
+void manager_connect_utmp(Manager *m) {
+#if ENABLE_UTMP
+ sd_event_source *s = NULL;
+ int r;
+
+ assert(m);
+
+ /* Watch utmp for changes via inotify. We do this to deal with tools such as ssh, which will register the PAM
+ * session early, and acquire a TTY only much later for the connection. Thus during PAM the TTY won't be known
+ * yet. ssh will register itself with utmp when it finally acquired the TTY. Hence, let's make use of this, and
+ * watch utmp for the TTY asynchronously. We use the PAM session's leader PID as key, to find the right entry.
+ *
+ * Yes, relying on utmp is pretty ugly, but it's good enough for informational purposes, as well as idle
+ * detection (which, for tty sessions, relies on the TTY used) */
+
+ r = sd_event_add_inotify(m->event, &s, _PATH_UTMPX, IN_MODIFY|IN_MOVE_SELF|IN_DELETE_SELF|IN_ATTRIB, manager_dispatch_utmp, m);
+ if (r < 0)
+ log_full_errno(r == -ENOENT ? LOG_DEBUG: LOG_WARNING, r, "Failed to create inotify watch on " _PATH_UTMPX ", ignoring: %m");
+ else {
+ r = sd_event_source_set_priority(s, SD_EVENT_PRIORITY_IDLE);
+ if (r < 0)
+ log_warning_errno(r, "Failed to adjust utmp event source priority, ignoring: %m");
+
+ (void) sd_event_source_set_description(s, "utmp");
+ }
+
+ sd_event_source_unref(m->utmp_event_source);
+ m->utmp_event_source = s;
+#endif
+}
+
+void manager_reconnect_utmp(Manager *m) {
+#if ENABLE_UTMP
+ assert(m);
+
+ if (m->utmp_event_source)
+ return;
+
+ manager_connect_utmp(m);
+#endif
+}
diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c
index 1bb152bc20..0248042308 100644
--- a/src/login/logind-dbus.c
+++ b/src/login/logind-dbus.c
@@ -772,6 +772,9 @@ static int method_create_session(sd_bus_message *message, void *userdata, sd_bus
} while (hashmap_get(m->sessions, id));
}
+ /* If we are not watching utmp aleady, try again */
+ manager_reconnect_utmp(m);
+
r = manager_add_user_by_uid(m, uid, &user);
if (r < 0)
goto fail;
@@ -795,6 +798,8 @@ static int method_create_session(sd_bus_message *message, void *userdata, sd_bus
r = -ENOMEM;
goto fail;
}
+
+ session->tty_validity = TTY_FROM_PAM;
}
if (!isempty(display)) {
diff --git a/src/login/logind-session.c b/src/login/logind-session.c
index 1143a834a4..d666f86d3f 100644
--- a/src/login/logind-session.c
+++ b/src/login/logind-session.c
@@ -56,6 +56,7 @@ int session_new(Session **ret, Manager *m, const char *id) {
.fifo_fd = -1,
.vtfd = -1,
.audit_id = AUDIT_SESSION_INVALID,
+ .tty_validity = _TTY_VALIDITY_INVALID,
};
s->state_file = strappend("/run/systemd/sessions/", id);
@@ -219,6 +220,9 @@ int session_save(Session *s) {
if (s->tty)
fprintf(f, "TTY=%s\n", s->tty);
+ if (s->tty_validity >= 0)
+ fprintf(f, "TTY_VALIDITY=%s\n", tty_validity_to_string(s->tty_validity));
+
if (s->display)
fprintf(f, "DISPLAY=%s\n", s->display);
@@ -355,6 +359,7 @@ static int session_load_devices(Session *s, const char *devices) {
int session_load(Session *s) {
_cleanup_free_ char *remote = NULL,
*seat = NULL,
+ *tty_validity = NULL,
*vtnr = NULL,
*state = NULL,
*position = NULL,
@@ -380,6 +385,7 @@ int session_load(Session *s) {
"FIFO", &s->fifo_path,
"SEAT", &seat,
"TTY", &s->tty,
+ "TTY_VALIDITY", &tty_validity,
"DISPLAY", &s->display,
"REMOTE_HOST", &s->remote_host,
"REMOTE_USER", &s->remote_user,
@@ -456,6 +462,16 @@ int session_load(Session *s) {
seat_claim_position(s->seat, s, npos);
}
+ if (tty_validity) {
+ TTYValidity v;
+
+ v = tty_validity_from_string(tty_validity);
+ if (v < 0)
+ log_debug("Failed to parse TTY validity: %s", tty_validity);
+ else
+ s->tty_validity = v;
+ }
+
if (leader) {
if (parse_pid(leader, &s->leader) >= 0)
(void) audit_session_from_pid(s->leader, &s->audit_id);
@@ -1368,3 +1384,11 @@ static const char* const kill_who_table[_KILL_WHO_MAX] = {
};
DEFINE_STRING_TABLE_LOOKUP(kill_who, KillWho);
+
+static const char* const tty_validity_table[_TTY_VALIDITY_MAX] = {
+ [TTY_FROM_PAM] = "from-pam",
+ [TTY_FROM_UTMP] = "from-utmp",
+ [TTY_UTMP_INCONSISTENT] = "utmp-inconsistent",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(tty_validity, TTYValidity);
diff --git a/src/login/logind-session.h b/src/login/logind-session.h
index 9bd0c96a03..7da845cea3 100644
--- a/src/login/logind-session.h
+++ b/src/login/logind-session.h
@@ -46,6 +46,14 @@ enum KillWho {
_KILL_WHO_INVALID = -1
};
+typedef enum TTYValidity {
+ TTY_FROM_PAM,
+ TTY_FROM_UTMP,
+ TTY_UTMP_INCONSISTENT, /* may happen on ssh sessions with multiplexed TTYs */
+ _TTY_VALIDITY_MAX,
+ _TTY_VALIDITY_INVALID = -1,
+} TTYValidity;
+
struct Session {
Manager *manager;
@@ -60,8 +68,9 @@ struct Session {
dual_timestamp timestamp;
- char *tty;
char *display;
+ char *tty;
+ TTYValidity tty_validity;
bool remote;
char *remote_user;
@@ -159,6 +168,9 @@ SessionClass session_class_from_string(const char *s) _pure_;
const char *kill_who_to_string(KillWho k) _const_;
KillWho kill_who_from_string(const char *s) _pure_;
+const char* tty_validity_to_string(TTYValidity t) _const_;
+TTYValidity tty_validity_from_string(const char *s) _pure_;
+
int session_prepare_vt(Session *s);
void session_restore_vt(Session *s);
void session_leave_vt(Session *s);
diff --git a/src/login/logind.c b/src/login/logind.c
index 6c208c8e89..25de9a6ab2 100644
--- a/src/login/logind.c
+++ b/src/login/logind.c
@@ -132,6 +132,10 @@ static Manager* manager_unref(Manager *m) {
sd_event_source_unref(m->udev_button_event_source);
sd_event_source_unref(m->lid_switch_ignore_event_source);
+#if ENABLE_UTMP
+ sd_event_source_unref(m->utmp_event_source);
+#endif
+
safe_close(m->console_active_fd);
udev_monitor_unref(m->udev_seat_monitor);
@@ -1095,6 +1099,9 @@ static int manager_startup(Manager *m) {
if (r < 0)
return log_error_errno(r, "Failed to register SIGHUP handler: %m");
+ /* Connect to utmp */
+ manager_connect_utmp(m);
+
/* Connect to console */
r = manager_connect_console(m);
if (r < 0)
@@ -1150,6 +1157,9 @@ static int manager_startup(Manager *m) {
/* Reserve the special reserved VT */
manager_reserve_vt(m);
+ /* Read in utmp if it exists */
+ manager_read_utmp(m);
+
/* And start everything */
HASHMAP_FOREACH(seat, m->seats, i)
seat_start(seat);
diff --git a/src/login/logind.h b/src/login/logind.h
index d29b01c75b..bb127bf4a5 100644
--- a/src/login/logind.h
+++ b/src/login/logind.h
@@ -43,6 +43,10 @@ struct Manager {
sd_event_source *udev_vcsa_event_source;
sd_event_source *udev_button_event_source;
+#if ENABLE_UTMP
+ sd_event_source *utmp_event_source;
+#endif
+
int console_active_fd;
unsigned n_autovts;
@@ -150,6 +154,10 @@ bool manager_is_docked_or_external_displays(Manager *m);
bool manager_is_on_external_power(void);
bool manager_all_buttons_ignored(Manager *m);
+int manager_read_utmp(Manager *m);
+void manager_connect_utmp(Manager *m);
+void manager_reconnect_utmp(Manager *m);
+
extern const sd_bus_vtable manager_vtable[];
int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error);

188
SOURCES/0827-logind-add-hashtable-for-finding-session-by-leader-P.patch Normal file
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@ -0,0 +1,188 @@
From fbc394252588325b6e7ecd1ab65ad40b51763c58 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 7 Aug 2018 12:08:24 +0200
Subject: [PATCH] logind: add hashtable for finding session by leader PID
This is useful later on, when we quickly want to find the session for a
leader PID.
(cherry picked from commit 238794b15082e6f61d0ce2943d39205289fff7f0)
Related: #2122288
---
src/login/logind-core.c | 15 ++++++++------
src/login/logind-dbus.c | 3 +--
src/login/logind-session.c | 41 +++++++++++++++++++++++++++++++++++---
src/login/logind-session.h | 1 +
src/login/logind.c | 4 +++-
src/login/logind.h | 1 +
6 files changed, 53 insertions(+), 12 deletions(-)
diff --git a/src/login/logind-core.c b/src/login/logind-core.c
index 7e33f8e6aa..a1943b6f9d 100644
--- a/src/login/logind-core.c
+++ b/src/login/logind-core.c
@@ -339,13 +339,16 @@ int manager_get_session_by_pid(Manager *m, pid_t pid, Session **ret) {
if (!pid_is_valid(pid))
return -EINVAL;
- r = cg_pid_get_unit(pid, &unit);
- if (r < 0)
- goto not_found;
+ s = hashmap_get(m->sessions_by_leader, PID_TO_PTR(pid));
+ if (!s) {
+ r = cg_pid_get_unit(pid, &unit);
+ if (r < 0)
+ goto not_found;
- s = hashmap_get(m->session_units, unit);
- if (!s)
- goto not_found;
+ s = hashmap_get(m->session_units, unit);
+ if (!s)
+ goto not_found;
+ }
if (ret)
*ret = s;
diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c
index 0248042308..01bfef4ff7 100644
--- a/src/login/logind-dbus.c
+++ b/src/login/logind-dbus.c
@@ -784,9 +784,8 @@ static int method_create_session(sd_bus_message *message, void *userdata, sd_bus
goto fail;
session_set_user(session, user);
+ session_set_leader(session, leader);
- session->leader = leader;
- session->audit_id = audit_id;
session->type = t;
session->class = c;
session->remote = remote;
diff --git a/src/login/logind-session.c b/src/login/logind-session.c
index d666f86d3f..cc838ca383 100644
--- a/src/login/logind-session.c
+++ b/src/login/logind-session.c
@@ -121,6 +121,9 @@ Session* session_free(Session *s) {
free(s->scope);
}
+ if (pid_is_valid(s->leader))
+ (void) hashmap_remove_value(s->manager->sessions_by_leader, PID_TO_PTR(s->leader), s);
+
free(s->scope_job);
sd_bus_message_unref(s->create_message);
@@ -149,6 +152,30 @@ void session_set_user(Session *s, User *u) {
user_update_last_session_timer(u);
}
+int session_set_leader(Session *s, pid_t pid) {
+ int r;
+
+ assert(s);
+
+ if (!pid_is_valid(pid))
+ return -EINVAL;
+
+ if (s->leader == pid)
+ return 0;
+
+ r = hashmap_put(s->manager->sessions_by_leader, PID_TO_PTR(pid), s);
+ if (r < 0)
+ return r;
+
+ if (pid_is_valid(s->leader))
+ (void) hashmap_remove_value(s->manager->sessions_by_leader, PID_TO_PTR(s->leader), s);
+
+ s->leader = pid;
+ (void) audit_session_from_pid(pid, &s->audit_id);
+
+ return 1;
+}
+
static void session_save_devices(Session *s, FILE *f) {
SessionDevice *sd;
Iterator i;
@@ -473,8 +500,16 @@ int session_load(Session *s) {
}
if (leader) {
- if (parse_pid(leader, &s->leader) >= 0)
- (void) audit_session_from_pid(s->leader, &s->audit_id);
+ pid_t pid;
+
+ r = parse_pid(leader, &pid);
+ if (r < 0)
+ log_debug_errno(r, "Failed to parse leader PID of session: %s", leader);
+ else {
+ r = session_set_leader(s, pid);
+ if (r < 0)
+ log_warning_errno(r, "Failed to set session leader PID, ignoring: %m");
+ }
}
if (type) {
@@ -910,7 +945,7 @@ int session_get_idle_hint(Session *s, dual_timestamp *t) {
/* For sessions with a leader but no explicitly configured
* tty, let's check the controlling tty of the leader */
- if (s->leader > 0) {
+ if (pid_is_valid(s->leader)) {
r = get_process_ctty_atime(s->leader, &atime);
if (r >= 0)
goto found_atime;
diff --git a/src/login/logind-session.h b/src/login/logind-session.h
index 7da845cea3..8c7d0301f2 100644
--- a/src/login/logind-session.h
+++ b/src/login/logind-session.h
@@ -124,6 +124,7 @@ Session* session_free(Session *s);
DEFINE_TRIVIAL_CLEANUP_FUNC(Session *, session_free);
void session_set_user(Session *s, User *u);
+int session_set_leader(Session *s, pid_t pid);
bool session_may_gc(Session *s, bool drop_not_started);
void session_add_to_gc_queue(Session *s);
int session_activate(Session *s);
diff --git a/src/login/logind.c b/src/login/logind.c
index 25de9a6ab2..6b576dad0d 100644
--- a/src/login/logind.c
+++ b/src/login/logind.c
@@ -46,6 +46,7 @@ static int manager_new(Manager **ret) {
m->devices = hashmap_new(&string_hash_ops);
m->seats = hashmap_new(&string_hash_ops);
m->sessions = hashmap_new(&string_hash_ops);
+ m->sessions_by_leader = hashmap_new(NULL);
m->users = hashmap_new(NULL);
m->inhibitors = hashmap_new(&string_hash_ops);
m->buttons = hashmap_new(&string_hash_ops);
@@ -53,7 +54,7 @@ static int manager_new(Manager **ret) {
m->user_units = hashmap_new(&string_hash_ops);
m->session_units = hashmap_new(&string_hash_ops);
- if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
+ if (!m->devices || !m->seats || !m->sessions || !m->sessions_by_leader || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
return -ENOMEM;
m->udev = udev_new();
@@ -112,6 +113,7 @@ static Manager* manager_unref(Manager *m) {
hashmap_free(m->devices);
hashmap_free(m->seats);
hashmap_free(m->sessions);
+ hashmap_free(m->sessions_by_leader);
hashmap_free(m->users);
hashmap_free(m->inhibitors);
hashmap_free(m->buttons);
diff --git a/src/login/logind.h b/src/login/logind.h
index bb127bf4a5..7f94dea2f6 100644
--- a/src/login/logind.h
+++ b/src/login/logind.h
@@ -26,6 +26,7 @@ struct Manager {
Hashmap *devices;
Hashmap *seats;
Hashmap *sessions;
+ Hashmap *sessions_by_leader;
Hashmap *users;
Hashmap *inhibitors;
Hashmap *buttons;

93
SOURCES/0828-core-load-fragment-move-config_parse_sec_fix_0-to-sr.patch Normal file
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@ -0,0 +1,93 @@
From 69ec7c9170e29fdf745fa282448d051edd1f88b2 Mon Sep 17 00:00:00 2001
From: Michal Sekletar <msekleta@redhat.com>
Date: Tue, 9 Aug 2022 11:41:04 +0200
Subject: [PATCH] core/load-fragment: move config_parse_sec_fix_0 to src/shared
(cherry picked from commit 4ee8176fe33bbcd0971c4583a0e7d1cc2a64ac06)
Related: #2122288
---
src/core/load-fragment.c | 33 ---------------------------------
src/core/load-fragment.h | 1 -
src/shared/conf-parser.c | 2 ++
src/shared/conf-parser.h | 1 +
4 files changed, 3 insertions(+), 34 deletions(-)
diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
index c0b1fd4f91..53de7ff5e9 100644
--- a/src/core/load-fragment.c
+++ b/src/core/load-fragment.c
@@ -1865,39 +1865,6 @@ int config_parse_service_timeout(
return 0;
}
-int config_parse_sec_fix_0(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- usec_t *usec = data;
- int r;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(usec);
-
- /* This is pretty much like config_parse_sec(), except that this treats a time of 0 as infinity, for
- * compatibility with older versions of systemd where 0 instead of infinity was used as indicator to turn off a
- * timeout. */
-
- r = parse_sec_fix_0(rvalue, usec);
- if (r < 0) {
- log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s= parameter, ignoring: %s", lvalue, rvalue);
- return 0;
- }
-
- return 0;
-}
-
int config_parse_user_group_compat(
const char *unit,
const char *filename,
diff --git a/src/core/load-fragment.h b/src/core/load-fragment.h
index f9d34d484d..b964737f9e 100644
--- a/src/core/load-fragment.h
+++ b/src/core/load-fragment.h
@@ -95,7 +95,6 @@ CONFIG_PARSER_PROTOTYPE(config_parse_bus_name);
CONFIG_PARSER_PROTOTYPE(config_parse_exec_utmp_mode);
CONFIG_PARSER_PROTOTYPE(config_parse_working_directory);
CONFIG_PARSER_PROTOTYPE(config_parse_fdname);
-CONFIG_PARSER_PROTOTYPE(config_parse_sec_fix_0);
CONFIG_PARSER_PROTOTYPE(config_parse_user_group_compat);
CONFIG_PARSER_PROTOTYPE(config_parse_user_group_strv_compat);
CONFIG_PARSER_PROTOTYPE(config_parse_restrict_namespaces);
diff --git a/src/shared/conf-parser.c b/src/shared/conf-parser.c
index 1f40f00c72..414dde2e3d 100644
--- a/src/shared/conf-parser.c
+++ b/src/shared/conf-parser.c
@@ -1286,3 +1286,5 @@ int config_parse_permille(const char* unit,
return 0;
}
+
+DEFINE_CONFIG_PARSE_PTR(config_parse_sec_fix_0, parse_sec_fix_0, usec_t, "Failed to parse time value");
diff --git a/src/shared/conf-parser.h b/src/shared/conf-parser.h
index 375b2e5a74..56fd302db8 100644
--- a/src/shared/conf-parser.h
+++ b/src/shared/conf-parser.h
@@ -142,6 +142,7 @@ CONFIG_PARSER_PROTOTYPE(config_parse_ip_port);
CONFIG_PARSER_PROTOTYPE(config_parse_join_controllers);
CONFIG_PARSER_PROTOTYPE(config_parse_mtu);
CONFIG_PARSER_PROTOTYPE(config_parse_rlimit);
+CONFIG_PARSER_PROTOTYPE(config_parse_sec_fix_0);
typedef enum Disabled {
DISABLED_CONFIGURATION,

123
SOURCES/0829-sd-event-add-relative-timer-calls.patch Normal file
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@ -0,0 +1,123 @@
From 30f5836253f820086caa24fc9283344615b8fc00 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 28 Jul 2020 11:17:00 +0200
Subject: [PATCH] sd-event: add relative timer calls
We frequently want to set a timer relative to the current time. Let's
add an explicit API for this. This not only saves us a few lines of code
everywhere and simplifies things, but also allows us to do correct
overflow checking.
(cherry picked from commit d6a83dc48ad1981665ff427858ae8e59d4cfd6cb)
Related: #2122288
---
src/libsystemd/libsystemd.sym | 8 +++++-
src/libsystemd/sd-event/sd-event.c | 42 ++++++++++++++++++++++++++++++
src/systemd/sd-event.h | 2 ++
3 files changed, 51 insertions(+), 1 deletion(-)
diff --git a/src/libsystemd/libsystemd.sym b/src/libsystemd/libsystemd.sym
index 3b55fc6473..449918093c 100644
--- a/src/libsystemd/libsystemd.sym
+++ b/src/libsystemd/libsystemd.sym
@@ -578,12 +578,18 @@ LIBSYSTEMD_240 {
sd_bus_get_method_call_timeout;
} LIBSYSTEMD_239;
+LIBSYSTEMD_247 {
+global:
+ sd_event_add_time_relative;
+ sd_event_source_set_time_relative;
+} LIBSYSTEMD_240;
+
LIBSYSTEMD_248 {
global:
sd_event_source_set_ratelimit;
sd_event_source_get_ratelimit;
sd_event_source_is_ratelimited;
-} LIBSYSTEMD_240;
+} LIBSYSTEMD_247;
LIBSYSTEMD_250 {
global:
diff --git a/src/libsystemd/sd-event/sd-event.c b/src/libsystemd/sd-event/sd-event.c
index 09d4584bf9..2c9d331bf2 100644
--- a/src/libsystemd/sd-event/sd-event.c
+++ b/src/libsystemd/sd-event/sd-event.c
@@ -1415,6 +1415,31 @@ fail:
return r;
}
+_public_ int sd_event_add_time_relative(
+ sd_event *e,
+ sd_event_source **ret,
+ clockid_t clock,
+ uint64_t usec,
+ uint64_t accuracy,
+ sd_event_time_handler_t callback,
+ void *userdata) {
+
+ usec_t t;
+ int r;
+
+ /* Same as sd_event_add_time() but operates relative to the event loop's current point in time, and
+ * checks for overflow. */
+
+ r = sd_event_now(e, clock, &t);
+ if (r < 0)
+ return r;
+
+ if (usec >= USEC_INFINITY - t)
+ return -EOVERFLOW;
+
+ return sd_event_add_time(e, ret, clock, t + usec, accuracy, callback, userdata);
+}
+
static int signal_exit_callback(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
assert(s);
@@ -2578,6 +2603,23 @@ _public_ int sd_event_source_set_time(sd_event_source *s, uint64_t usec) {
return 0;
}
+_public_ int sd_event_source_set_time_relative(sd_event_source *s, uint64_t usec) {
+ usec_t t;
+ int r;
+
+ assert_return(s, -EINVAL);
+ assert_return(EVENT_SOURCE_IS_TIME(s->type), -EDOM);
+
+ r = sd_event_now(s->event, event_source_type_to_clock(s->type), &t);
+ if (r < 0)
+ return r;
+
+ if (usec >= USEC_INFINITY - t)
+ return -EOVERFLOW;
+
+ return sd_event_source_set_time(s, t + usec);
+}
+
_public_ int sd_event_source_get_time_accuracy(sd_event_source *s, uint64_t *usec) {
assert_return(s, -EINVAL);
assert_return(usec, -EINVAL);
diff --git a/src/systemd/sd-event.h b/src/systemd/sd-event.h
index c2e9c9614d..960bea1ac4 100644
--- a/src/systemd/sd-event.h
+++ b/src/systemd/sd-event.h
@@ -87,6 +87,7 @@ sd_event* sd_event_unref(sd_event *e);
int sd_event_add_io(sd_event *e, sd_event_source **s, int fd, uint32_t events, sd_event_io_handler_t callback, void *userdata);
int sd_event_add_time(sd_event *e, sd_event_source **s, clockid_t clock, uint64_t usec, uint64_t accuracy, sd_event_time_handler_t callback, void *userdata);
+int sd_event_add_time_relative(sd_event *e, sd_event_source **s, clockid_t clock, uint64_t usec, uint64_t accuracy, sd_event_time_handler_t callback, void *userdata);
int sd_event_add_signal(sd_event *e, sd_event_source **s, int sig, sd_event_signal_handler_t callback, void *userdata);
int sd_event_add_child(sd_event *e, sd_event_source **s, pid_t pid, int options, sd_event_child_handler_t callback, void *userdata);
int sd_event_add_inotify(sd_event *e, sd_event_source **s, const char *path, uint32_t mask, sd_event_inotify_handler_t callback, void *userdata);
@@ -136,6 +137,7 @@ int sd_event_source_set_io_events(sd_event_source *s, uint32_t events);
int sd_event_source_get_io_revents(sd_event_source *s, uint32_t* revents);
int sd_event_source_get_time(sd_event_source *s, uint64_t *usec);
int sd_event_source_set_time(sd_event_source *s, uint64_t usec);
+int sd_event_source_set_time_relative(sd_event_source *s, uint64_t usec);
int sd_event_source_get_time_accuracy(sd_event_source *s, uint64_t *usec);
int sd_event_source_set_time_accuracy(sd_event_source *s, uint64_t usec);
int sd_event_source_get_time_clock(sd_event_source *s, clockid_t *clock);

233
SOURCES/0830-logind-add-option-to-stop-idle-sessions-after-specif.patch Normal file
View File

@ -0,0 +1,233 @@
From 24439b08e3a3437b423553c385cde1d4cddf18f6 Mon Sep 17 00:00:00 2001
From: Michal Sekletar <msekleta@redhat.com>
Date: Mon, 8 Aug 2022 09:13:50 +0200
Subject: [PATCH] logind: add option to stop idle sessions after specified
timeout
Thanks to Jan Pazdziora <jpazdziora@redhat.com> for providing a patch
which implemeted a PoC of this feature.
(cherry picked from commit 82325af3ae41bc7efb3d5cd8f56a4652fef498c2)
Resolves: #2122288
---
man/logind.conf.xml | 11 ++++++
src/login/logind-core.c | 2 +
src/login/logind-dbus.c | 1 +
src/login/logind-gperf.gperf | 1 +
src/login/logind-session.c | 72 +++++++++++++++++++++++++++++++++---
src/login/logind-session.h | 2 +
src/login/logind.conf.in | 1 +
src/login/logind.h | 2 +
8 files changed, 86 insertions(+), 6 deletions(-)
diff --git a/man/logind.conf.xml b/man/logind.conf.xml
index 0cf8a7d1f2..00b5b1f2e8 100644
--- a/man/logind.conf.xml
+++ b/man/logind.conf.xml
@@ -333,6 +333,17 @@
are excluded from the effect of this setting. Defaults to <literal>no</literal>.</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>StopIdleSessionSec=</varname></term>
+
+ <listitem><para>Specifies a timeout in seconds, or a time span value after which
+ <filename>systemd-logind</filename> checks the idle state of all sessions. Every session that is idle for
+ longer then the timeout will be stopped. Defaults to <literal>infinity</literal>
+ (<filename>systemd-logind</filename> is not checking the idle state of sessions). For details about the syntax
+ of time spans, see
+ <citerefentry><refentrytitle>systemd.time</refentrytitle><manvolnum>7</manvolnum></citerefentry>.
+ </para></listitem>
+ </varlistentry>
</variablelist>
</refsect1>
diff --git a/src/login/logind-core.c b/src/login/logind-core.c
index a1943b6f9d..abe6eecffb 100644
--- a/src/login/logind-core.c
+++ b/src/login/logind-core.c
@@ -58,6 +58,8 @@ void manager_reset_config(Manager *m) {
m->kill_only_users = strv_free(m->kill_only_users);
m->kill_exclude_users = strv_free(m->kill_exclude_users);
+
+ m->stop_idle_session_usec = USEC_INFINITY;
}
int manager_parse_config_file(Manager *m) {
diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c
index 01bfef4ff7..81aacb4eed 100644
--- a/src/login/logind-dbus.c
+++ b/src/login/logind-dbus.c
@@ -2720,6 +2720,7 @@ const sd_bus_vtable manager_vtable[] = {
SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
+ SD_BUS_PROPERTY("StopIdleSessionUSec", "t", NULL, offsetof(Manager, stop_idle_session_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_METHOD_WITH_NAMES("GetSession",
"s",
diff --git a/src/login/logind-gperf.gperf b/src/login/logind-gperf.gperf
index 8829ce7d85..214ac5c4a3 100644
--- a/src/login/logind-gperf.gperf
+++ b/src/login/logind-gperf.gperf
@@ -42,3 +42,4 @@ Login.RemoveIPC, config_parse_bool, 0, offse
Login.InhibitorsMax, config_parse_uint64, 0, offsetof(Manager, inhibitors_max)
Login.SessionsMax, config_parse_uint64, 0, offsetof(Manager, sessions_max)
Login.UserTasksMax, config_parse_compat_user_tasks_max, 0, offsetof(Manager, user_tasks_max)
+Login.StopIdleSessionSec, config_parse_sec_fix_0, 0, offsetof(Manager, stop_idle_session_usec)
diff --git a/src/login/logind-session.c b/src/login/logind-session.c
index cc838ca383..56f40fbec4 100644
--- a/src/login/logind-session.c
+++ b/src/login/logind-session.c
@@ -29,6 +29,7 @@
#include "string-table.h"
#include "strv.h"
#include "terminal-util.h"
+#include "time-util.h"
#include "user-util.h"
#include "util.h"
@@ -139,6 +140,8 @@ Session* session_free(Session *s) {
free(s->state_file);
+ sd_event_source_unref(s->stop_on_idle_event_source);
+
return mfree(s);
}
@@ -658,6 +661,55 @@ static int session_start_scope(Session *s, sd_bus_message *properties, sd_bus_er
return 0;
}
+static int session_dispatch_stop_on_idle(sd_event_source *source, uint64_t t, void *userdata) {
+ Session *s = userdata;
+ dual_timestamp ts;
+ int r, idle;
+
+ assert(s);
+
+ if (s->stopping)
+ return 0;
+
+ idle = session_get_idle_hint(s, &ts);
+ if (idle) {
+ log_debug("Session \"%s\" of user \"%s\" is idle, stopping.", s->id, s->user->name);
+
+ return session_stop(s, /* force */ true);
+ }
+
+ r = sd_event_source_set_time(source, usec_add(ts.monotonic, s->manager->stop_idle_session_usec));
+ if (r < 0)
+ return log_error_errno(r, "Failed to configure stop on idle session event source: %m");
+
+ r = sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
+ if (r < 0)
+ return log_error_errno(r, "Failed to enable stop on idle session event source: %m");
+
+ return 1;
+}
+
+static int session_setup_stop_on_idle_timer(Session *s) {
+ int r;
+
+ assert(s);
+
+ if (s->manager->stop_idle_session_usec == USEC_INFINITY)
+ return 0;
+
+ r = sd_event_add_time_relative(
+ s->manager->event,
+ &s->stop_on_idle_event_source,
+ CLOCK_MONOTONIC,
+ s->manager->stop_idle_session_usec,
+ 0,
+ session_dispatch_stop_on_idle, s);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add stop on idle session event source: %m");
+
+ return 0;
+}
+
int session_start(Session *s, sd_bus_message *properties, sd_bus_error *error) {
int r;
@@ -680,6 +732,10 @@ int session_start(Session *s, sd_bus_message *properties, sd_bus_error *error) {
if (r < 0)
return r;
+ r = session_setup_stop_on_idle_timer(s);
+ if (r < 0)
+ return r;
+
log_struct(s->class == SESSION_BACKGROUND ? LOG_DEBUG : LOG_INFO,
"MESSAGE_ID=" SD_MESSAGE_SESSION_START_STR,
"SESSION_ID=%s", s->id,
@@ -917,7 +973,7 @@ static int get_process_ctty_atime(pid_t pid, usec_t *atime) {
}
int session_get_idle_hint(Session *s, dual_timestamp *t) {
- usec_t atime = 0, n;
+ usec_t atime = 0, dtime = 0;
int r;
assert(s);
@@ -961,12 +1017,16 @@ found_atime:
if (t)
dual_timestamp_from_realtime(t, atime);
- n = now(CLOCK_REALTIME);
-
- if (s->manager->idle_action_usec <= 0)
- return 0;
+ if (s->manager->idle_action_usec > 0 && s->manager->stop_idle_session_usec != USEC_INFINITY)
+ dtime = MIN(s->manager->idle_action_usec, s->manager->stop_idle_session_usec);
+ else if (s->manager->idle_action_usec > 0)
+ dtime = s->manager->idle_action_usec;
+ else if (s->manager->stop_idle_session_usec != USEC_INFINITY)
+ dtime = s->manager->stop_idle_session_usec;
+ else
+ return false;
- return atime + s->manager->idle_action_usec <= n;
+ return usec_add(atime, dtime) <= now(CLOCK_REALTIME);
}
void session_set_idle_hint(Session *s, bool b) {
diff --git a/src/login/logind-session.h b/src/login/logind-session.h
index 8c7d0301f2..6678441bb9 100644
--- a/src/login/logind-session.h
+++ b/src/login/logind-session.h
@@ -112,6 +112,8 @@ struct Session {
Hashmap *devices;
sd_bus_track *track;
+ sd_event_source *stop_on_idle_event_source;
+
LIST_FIELDS(Session, sessions_by_user);
LIST_FIELDS(Session, sessions_by_seat);
diff --git a/src/login/logind.conf.in b/src/login/logind.conf.in
index c7346f9819..a62c2b0b57 100644
--- a/src/login/logind.conf.in
+++ b/src/login/logind.conf.in
@@ -35,3 +35,4 @@
#RemoveIPC=no
#InhibitorsMax=8192
#SessionsMax=8192
+#StopIdleSessionSec=infinity
diff --git a/src/login/logind.h b/src/login/logind.h
index 7f94dea2f6..606adf4fe6 100644
--- a/src/login/logind.h
+++ b/src/login/logind.h
@@ -102,6 +102,8 @@ struct Manager {
usec_t idle_action_not_before_usec;
HandleAction idle_action;
+ usec_t stop_idle_session_usec;
+
HandleAction handle_power_key;
HandleAction handle_suspend_key;
HandleAction handle_hibernate_key;

29
SOURCES/0831-logind-schedule-idle-check-full-interval-from-now-if.patch Normal file
View File

@ -0,0 +1,29 @@
From e48edc1b923267a5fcc808c3eb7151bf460a68ba Mon Sep 17 00:00:00 2001
From: Michal Sekletar <msekleta@redhat.com>
Date: Fri, 9 Sep 2022 13:38:58 +0200
Subject: [PATCH] logind: schedule idle check full interval from now if we
couldn't figure out atime timestamp
(cherry picked from commit 6edf707fd59347024fa6be0342b108527825db1f)
Related: #2122288
---
src/login/logind-session.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/src/login/logind-session.c b/src/login/logind-session.c
index 56f40fbec4..18a07efcdb 100644
--- a/src/login/logind-session.c
+++ b/src/login/logind-session.c
@@ -678,7 +678,10 @@ static int session_dispatch_stop_on_idle(sd_event_source *source, uint64_t t, vo
return session_stop(s, /* force */ true);
}
- r = sd_event_source_set_time(source, usec_add(ts.monotonic, s->manager->stop_idle_session_usec));
+ r = sd_event_source_set_time(
+ source,
+ usec_add(dual_timestamp_is_set(&ts) ? ts.monotonic : now(CLOCK_MONOTONIC),
+ s->manager->stop_idle_session_usec));
if (r < 0)
return log_error_errno(r, "Failed to configure stop on idle session event source: %m");

16
SPECS/systemd.spec
View File

@ -13,7 +13,7 @@
Name: systemd
Url: http://www.freedesktop.org/wiki/Software/systemd
Version: 239
Release: 67%{?dist}
Release: 68%{?dist}
# For a breakdown of the licensing, see README
License: LGPLv2+ and MIT and GPLv2+
Summary: System and Service Manager
@ -875,6 +875,12 @@ Patch0822: 0822-shutdown-get-only-active-md-arrays.patch
Patch0823: 0823-scope-allow-unprivileged-delegation-on-scopes.patch
Patch0824: 0824-resolved-pin-stream-while-calling-callbacks-for-it.patch
Patch0825: 0825-ci-functions-Add-useradd-and-userdel.patch
Patch0826: 0826-logind-optionally-watch-utmp-for-login-data.patch
Patch0827: 0827-logind-add-hashtable-for-finding-session-by-leader-P.patch
Patch0828: 0828-core-load-fragment-move-config_parse_sec_fix_0-to-sr.patch
Patch0829: 0829-sd-event-add-relative-timer-calls.patch
Patch0830: 0830-logind-add-option-to-stop-idle-sessions-after-specif.patch
Patch0831: 0831-logind-schedule-idle-check-full-interval-from-now-if.patch
%ifarch %{ix86} x86_64 aarch64
%global have_gnu_efi 1
@ -1504,6 +1510,14 @@ fi
%files tests -f .file-list-tests
%changelog
* Tue Sep 27 2022 systemd maintenance team <systemd-maint@redhat.com> - 239-68
- logind: optionally watch utmp for login data (#2122288)
- logind: add hashtable for finding session by leader PID (#2122288)
- core/load-fragment: move config_parse_sec_fix_0 to src/shared (#2122288)
- sd-event: add relative timer calls (#2122288)
- logind: add option to stop idle sessions after specified timeout (#2122288)
- logind: schedule idle check full interval from now if we couldn't figure out atime timestamp (#2122288)
* Fri Aug 26 2022 systemd maintenance team <systemd-maint@redhat.com> - 239-67
- resolved: pin stream while calling callbacks for it (#2110549)
- ci(functions): Add `useradd` and `userdel` (#2110549)