14766779411

Committed 30 Apr 2025 04:55PM UTC coverage: 72.225% (-0.06%) from 72.282%

Build # 14766779411

Build Type

push

github

Committed by

web-flow

Commit Message

wait-online: handle varlink connection errors while waiting for DNS (#37283)

Currently, if systemd-networkd-wait-online is started with --dns, and
systemd-resolved is not running, it will exit with an error right away.
Similarly, if systemd-resolved is restarted while waiting for DNS
configuration, systemd-networkd-wait-online will not attempt to
re-connect, and will potentially never see subsequent DNS
configurations.

Improve this by adding socket units for the systemd-resolved varlink
servers, and re-establish the connection in systemd-networkd-wait-online
when we receive `SD_VARLINK_ERROR_DISCONNECTED`.

Coverage Stats

8 of 16 new or added lines in 2 files covered. (50.0%)

5825 existing lines in 217 files now uncovered.

297168 of 411450 relevant lines covered (72.22%)

695892.62 hits per line

Source File
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44.84

/src/systemctl/systemctl-logind.c

/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include <unistd.h>

#include "sd-login.h"

#include "bus-error.h"
#include "bus-locator.h"
#include "login-util.h"
#include "mountpoint-util.h"
#include "process-util.h"
#include "systemctl.h"
#include "systemctl-logind.h"
#include "systemctl-start-unit.h"
#include "systemctl-util.h"
#include "terminal-util.h"
#include "user-util.h"

static int logind_set_wall_message(sd_bus *bus) {
#if ENABLE_LOGIND
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        _cleanup_free_ char *m = NULL;
        int r;

        assert(bus);

        m = strv_join(arg_wall, " ");
        if (!m)
                return log_oom();

        log_debug("%s wall message \"%s\".", arg_dry_run ? "Would set" : "Setting", m);
        if (arg_dry_run)
                return 0;

        r = bus_call_method(bus, bus_login_mgr, "SetWallMessage", &error, NULL, "sb", m, !arg_no_wall);
        if (r < 0)
                return log_warning_errno(r, "Failed to set wall message, ignoring: %s", bus_error_message(&error, r));
#endif
        return 0;
}

/* Ask systemd-logind, which might grant access to unprivileged users through polkit */
int logind_reboot(enum action a) {
#if ENABLE_LOGIND
        static const char* actions[_ACTION_MAX] = {
                [ACTION_POWEROFF]               = "PowerOff",
                [ACTION_REBOOT]                 = "Reboot",
                [ACTION_KEXEC]                  = "Reboot",
                [ACTION_SOFT_REBOOT]            = "Reboot",
                [ACTION_HALT]                   = "Halt",
                [ACTION_SUSPEND]                = "Suspend",
                [ACTION_HIBERNATE]              = "Hibernate",
                [ACTION_HYBRID_SLEEP]           = "HybridSleep",
                [ACTION_SUSPEND_THEN_HIBERNATE] = "SuspendThenHibernate",
                [ACTION_SLEEP]                  = "Sleep",
        };

        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        uint64_t flags = 0;
        sd_bus *bus;
        int r;

        assert(a >= 0);
        assert(a < _ACTION_MAX);

        if (!actions[a])
                return -EINVAL;

        r = acquire_bus_full(BUS_FULL, /* graceful = */ true, &bus);
        if (r < 0)
                return r;

        polkit_agent_open_maybe();
        (void) logind_set_wall_message(bus);

        const char *method_with_flags = a == ACTION_SLEEP ? actions[a] : strjoina(actions[a], "WithFlags");

        log_debug("%s org.freedesktop.login1.Manager %s dbus call.",
                  arg_dry_run ? "Would execute" : "Executing", method_with_flags);

        if (arg_dry_run)
                return 0;

        SET_FLAG(flags, SD_LOGIND_ROOT_CHECK_INHIBITORS, arg_check_inhibitors > 0);
        SET_FLAG(flags, SD_LOGIND_SKIP_INHIBITORS, arg_check_inhibitors == 0);
        SET_FLAG(flags,
                 SD_LOGIND_REBOOT_VIA_KEXEC,
                 a == ACTION_KEXEC || (a == ACTION_REBOOT && getenv_bool("SYSTEMCTL_SKIP_AUTO_KEXEC") <= 0));
        /* Try to soft-reboot if /run/nextroot/ is a valid OS tree, but only if it's also a mount point.
         * Otherwise, if people store new rootfs directly on /run/ tmpfs, 'systemctl reboot' would always
         * soft-reboot, as /run/nextroot/ can never go away. */
        SET_FLAG(flags,
                 SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP,
                 a == ACTION_REBOOT && getenv_bool("SYSTEMCTL_SKIP_AUTO_SOFT_REBOOT") <= 0 && path_is_mount_point("/run/nextroot") > 0);
        SET_FLAG(flags, SD_LOGIND_SOFT_REBOOT, a == ACTION_SOFT_REBOOT);

        r = bus_call_method(bus, bus_login_mgr, method_with_flags, &error, NULL, "t", flags);
        if (r < 0 && FLAGS_SET(flags, SD_LOGIND_SKIP_INHIBITORS) &&
                        sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS)) {
                sd_bus_error_free(&error);
                flags &= ~SD_LOGIND_SKIP_INHIBITORS;
                r = bus_call_method(bus, bus_login_mgr, method_with_flags, &error, NULL, "t", flags);
        }
        if (r < 0 && FLAGS_SET(flags, SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP) &&
                        sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS)) {
                sd_bus_error_free(&error);
                flags &= ~SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP;
                r = bus_call_method(bus, bus_login_mgr, method_with_flags, &error, NULL, "t", flags);
        }
        if (r >= 0)
                return 0;
        if (geteuid() == 0 && sd_bus_error_has_name(&error, SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED))
                return log_error_errno(r,
                                       "The current polkit policy does not allow root to ignore inhibitors without authentication in order to %s.\n"
                                       "To allow this action, a new polkit rule is needed.\n"
                                       "See " POLKIT_RULES_DIR "/10-systemd-logind-root-ignore-inhibitors.rules.example.",
                                       action_table[a].verb);
        if (!sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD) || a == ACTION_SLEEP)
                return log_error_errno(r, "Call to %s failed: %s", actions[a], bus_error_message(&error, r));

        /* Fall back to original methods in case there is an older version of systemd-logind */
        log_debug("Method %s not available: %s. Falling back to %s", method_with_flags, bus_error_message(&error, r), actions[a]);
        sd_bus_error_free(&error);

        r = bus_call_method(bus, bus_login_mgr, actions[a], &error, NULL, "b", arg_ask_password);
        if (r < 0)
                return log_error_errno(r, "Call to %s failed: %s", actions[a], bus_error_message(&error, r));

        return 0;
#else
        return -ENOSYS;
#endif
}

int logind_check_inhibitors(enum action a) {
#if ENABLE_LOGIND
        _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
        _cleanup_strv_free_ char **sessions = NULL;
        const char *what, *who, *why, *mode;
        uint32_t uid, pid;
        sd_bus *bus;
        unsigned c = 0;
        int r;

        assert(a >= 0);
        assert(a < _ACTION_MAX);

        if (arg_check_inhibitors == 0 || arg_force > 0)
                return 0;

        if (arg_when > 0)
                return 0;

        if (arg_check_inhibitors < 0 && !on_tty())
                return 0;

        if (arg_transport != BUS_TRANSPORT_LOCAL)
                return 0;

        r = acquire_bus_full(BUS_FULL, /* graceful = */ true, &bus);
        if ((ERRNO_IS_NEG_DISCONNECT(r) || r == -ENOENT) && geteuid() == 0)
                return 0; /* When D-Bus is not running (ECONNREFUSED) or D-Bus socket is not created (ENOENT),
                           * allow root to force a shutdown. E.g. when running at the emergency console. */
        if (r < 0)
                return r;

        r = bus_call_method(bus, bus_login_mgr, "ListInhibitors", NULL, &reply, NULL);
        if (r < 0)
                /* If logind is not around, then there are no inhibitors... */
                return 0;

        r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
        if (r < 0)
                return bus_log_parse_error(r);

        while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
                _cleanup_free_ char *comm = NULL, *user = NULL;
                _cleanup_strv_free_ char **sv = NULL;

                if (!STR_IN_SET(mode, "block", "block-weak"))
                        continue;

                if (streq(mode, "block-weak") && (geteuid() == 0 || geteuid() == uid || !on_tty()))
                        continue;

                sv = strv_split(what, ":");
                if (!sv)
                        return log_oom();

                if (!pid_is_valid((pid_t) pid))
                        return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Invalid PID "PID_FMT".", (pid_t) pid);

                if (!strv_contains(sv,
                                   IN_SET(a,
                                          ACTION_HALT,
                                          ACTION_POWEROFF,
                                          ACTION_REBOOT,
                                          ACTION_KEXEC) ? "shutdown" : "sleep"))
                        continue;

                (void) pid_get_comm(pid, &comm);
                user = uid_to_name(uid);

                log_warning("Operation inhibited by \"%s\" (PID "PID_FMT" \"%s\", user %s), reason is \"%s\".",
                            who, (pid_t) pid, strna(comm), strna(user), why);

                c++;
        }
        if (r < 0)
                return bus_log_parse_error(r);

        r = sd_bus_message_exit_container(reply);
        if (r < 0)
                return bus_log_parse_error(r);

        /* root respects inhibitors since v257 but keeps ignoring sessions by default */
        if (arg_check_inhibitors < 0 && c == 0 && geteuid() == 0)
                return 0;

        /* Check for current sessions */
        sd_get_sessions(&sessions);
        STRV_FOREACH(s, sessions) {
                _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;

                if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
                        continue;

                if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
                        continue;

                if (sd_session_get_type(*s, &type) < 0 || !STR_IN_SET(type, "x11", "wayland", "tty", "mir"))
                        continue;

                sd_session_get_tty(*s, &tty);
                sd_session_get_seat(*s, &seat);
                sd_session_get_service(*s, &service);
                user = uid_to_name(uid);

                log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
                c++;
        }

        if (c <= 0)
                return 0;

        return log_error_errno(SYNTHETIC_ERRNO(EPERM),
                               "Please retry operation after closing inhibitors and logging out other users.\n"
                               "'systemd-inhibit' can be used to list active inhibitors.\n"
                               "Alternatively, ignore inhibitors and users with 'systemctl %s -i'.",
                               action_table[a].verb);
#else
        return 0;
#endif
}

int prepare_firmware_setup(void) {

        if (!arg_firmware_setup)
                return 0;

#if ENABLE_LOGIND
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        sd_bus *bus;
        int r;

        r = acquire_bus(BUS_FULL, &bus);
        if (r < 0)
                return r;

        r = bus_call_method(bus, bus_login_mgr, "SetRebootToFirmwareSetup", &error, NULL, "b", true);
        if (r < 0)
                return log_error_errno(r, "Cannot indicate to EFI to boot into setup mode: %s", bus_error_message(&error, r));

        return 0;
#else
        return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
                               "Booting into firmware setup not supported.");
#endif
}

int prepare_boot_loader_menu(void) {

        if (arg_boot_loader_menu == USEC_INFINITY)
                return 0;

#if ENABLE_LOGIND
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        sd_bus *bus;
        int r;

        r = acquire_bus(BUS_FULL, &bus);
        if (r < 0)
                return r;

        r = bus_call_method(bus, bus_login_mgr, "SetRebootToBootLoaderMenu", &error, NULL, "t", arg_boot_loader_menu);
        if (r < 0)
                return log_error_errno(r, "Cannot indicate to boot loader to enter boot loader entry menu: %s", bus_error_message(&error, r));

        return 0;
#else
        return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
                               "Booting into boot loader menu not supported.");
#endif
}

int prepare_boot_loader_entry(void) {

        if (!arg_boot_loader_entry)
                return 0;

#if ENABLE_LOGIND
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        sd_bus *bus;
        int r;

        r = acquire_bus(BUS_FULL, &bus);
        if (r < 0)
                return r;

        r = bus_call_method(bus, bus_login_mgr, "SetRebootToBootLoaderEntry", &error, NULL, "s", arg_boot_loader_entry);
        if (r < 0)
                return log_error_errno(r, "Cannot set boot into loader entry '%s': %s", arg_boot_loader_entry, bus_error_message(&error, r));

        return 0;
#else
        return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
                               "Booting into boot loader entry not supported.");
#endif
}

int logind_schedule_shutdown(enum action a) {
#if ENABLE_LOGIND
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        const char *action;
        sd_bus *bus;
        int r;

        assert(a >= 0);
        assert(a < _ACTION_MAX);

        r = acquire_bus(BUS_FULL, &bus);
        if (r < 0)
                return r;

        action = action_table[a].verb;
        if (!action)
                return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Scheduling not supported for this action.");

        if (arg_dry_run)
                action = strjoina("dry-", action);

        (void) logind_set_wall_message(bus);

        r = bus_call_method(bus, bus_login_mgr, "ScheduleShutdown", &error, NULL, "st", action, arg_when);
        if (r < 0)
                return log_warning_errno(r, "Failed to schedule shutdown: %s", bus_error_message(&error, r));

        if (!arg_quiet)
                logind_show_shutdown();

        return 0;
#else
        return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
                               "Cannot schedule shutdown without logind support, proceeding with immediate shutdown.");
#endif
}

int logind_cancel_shutdown(void) {
#if ENABLE_LOGIND
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        sd_bus *bus;
        int r;

        r = acquire_bus(BUS_FULL, &bus);
        if (r < 0)
                return r;

        (void) logind_set_wall_message(bus);

        r = bus_call_method(bus, bus_login_mgr, "CancelScheduledShutdown", &error, NULL, NULL);
        if (r < 0)
                return log_warning_errno(r, "Failed to talk to logind, shutdown hasn't been cancelled: %s", bus_error_message(&error, r));

        return 0;
#else
        return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
                               "Not compiled with logind support, cannot cancel scheduled shutdowns.");
#endif
}

int logind_show_shutdown(void) {
#if ENABLE_LOGIND
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
        sd_bus *bus;
        const char *action, *pretty_action;
        uint64_t elapse;
        int r;

        r = acquire_bus(BUS_FULL, &bus);
        if (r < 0)
                return r;

        r = bus_get_property(bus, bus_login_mgr, "ScheduledShutdown", &error, &reply, "(st)");
        if (r < 0)
                return log_error_errno(r, "Failed to query scheduled shutdown: %s", bus_error_message(&error, r));

        r = sd_bus_message_read(reply, "(st)", &action, &elapse);
        if (r < 0)
                return r;

        if (isempty(action))
                return log_full_errno(arg_quiet ? LOG_DEBUG : LOG_ERR, SYNTHETIC_ERRNO(ENODATA), "No scheduled shutdown.");

        if (STR_IN_SET(action, "halt", "poweroff", "exit"))
                pretty_action = "Shutdown";
        else if (streq(action, "kexec"))
                pretty_action = "Reboot via kexec";
        else if (streq(action, "reboot"))
                pretty_action = "Reboot";
        else /* If we don't recognize the action string, we'll show it as-is */
                pretty_action = action;

        if (IN_SET(arg_action, ACTION_SYSTEMCTL, ACTION_SYSTEMCTL_SHOW_SHUTDOWN))
                log_info("%s scheduled for %s, use 'systemctl %s --when=cancel' to cancel.",
                         pretty_action,
                         FORMAT_TIMESTAMP_STYLE(elapse, arg_timestamp_style),
                         action);
        else
                log_info("%s scheduled for %s, use 'shutdown -c' to cancel.",
                         pretty_action,
                         FORMAT_TIMESTAMP_STYLE(elapse, arg_timestamp_style));

        return 0;
#else
        return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
                               "Not compiled with logind support, cannot show scheduled shutdowns.");
#endif
}

int help_boot_loader_entry(void) {
#if ENABLE_LOGIND
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        _cleanup_strv_free_ char **l = NULL;
        sd_bus *bus;
        int r;

        /* This is called without checking runtime scope and bus transport like we do in parse_argv().
         * Loading boot entries is only supported by system scope. Let's gracefully adjust them. */
        arg_runtime_scope = RUNTIME_SCOPE_SYSTEM;
        if (arg_transport == BUS_TRANSPORT_CAPSULE) {
                arg_host = NULL;
                arg_transport = BUS_TRANSPORT_LOCAL;
        }

        r = acquire_bus(BUS_FULL, &bus);
        if (r < 0)
                return r;

        r = bus_get_property_strv(bus, bus_login_mgr, "BootLoaderEntries", &error, &l);
        if (r < 0)
                return log_error_errno(r, "Failed to enumerate boot loader entries: %s", bus_error_message(&error, r));

        if (strv_isempty(l))
                return log_error_errno(SYNTHETIC_ERRNO(ENODATA), "No boot loader entries discovered.");

        STRV_FOREACH(i, l)
                puts(*i);

        return 0;
#else
        return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
                               "Not compiled with logind support, cannot display boot loader entries.");
#endif
}

1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3	#include <unistd.h>
4
5	#include "sd-login.h"
6
7	#include "bus-error.h"
8	#include "bus-locator.h"
9	#include "login-util.h"
10	#include "mountpoint-util.h"
11	#include "process-util.h"
12	#include "systemctl.h"
13	#include "systemctl-logind.h"
14	#include "systemctl-start-unit.h"
15	#include "systemctl-util.h"
16	#include "terminal-util.h"
17	#include "user-util.h"
18
19	static int logind_set_wall_message(sd_bus *bus) {	38✔
20	#if ENABLE_LOGIND
21	_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;	×
22	_cleanup_free_ char *m = NULL;	38✔
23	int r;	38✔
24
25	assert(bus);	38✔
26
27	m = strv_join(arg_wall, " ");	38✔
28	if (!m)	38✔
29	return log_oom();	×
30
31	log_debug("%s wall message \"%s\".", arg_dry_run ? "Would set" : "Setting", m);	43✔
32	if (arg_dry_run)	38✔
33	return 0;
34
35	r = bus_call_method(bus, bus_login_mgr, "SetWallMessage", &error, NULL, "sb", m, !arg_no_wall);	25✔
36	if (r < 0)	25✔
37	return log_warning_errno(r, "Failed to set wall message, ignoring: %s", bus_error_message(&error, r));	×
38	#endif
39	return 0;
40	}
41
42	/* Ask systemd-logind, which might grant access to unprivileged users through polkit */
43	int logind_reboot(enum action a) {	32✔
44	#if ENABLE_LOGIND
45	static const char* actions[_ACTION_MAX] = {	32✔
46	[ACTION_POWEROFF] = "PowerOff",
47	[ACTION_REBOOT] = "Reboot",
48	[ACTION_KEXEC] = "Reboot",
49	[ACTION_SOFT_REBOOT] = "Reboot",
50	[ACTION_HALT] = "Halt",
51	[ACTION_SUSPEND] = "Suspend",
52	[ACTION_HIBERNATE] = "Hibernate",
53	[ACTION_HYBRID_SLEEP] = "HybridSleep",
54	[ACTION_SUSPEND_THEN_HIBERNATE] = "SuspendThenHibernate",
55	[ACTION_SLEEP] = "Sleep",
56	};
57
58	_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;	32✔
59	uint64_t flags = 0;	32✔
60	sd_bus *bus;	32✔
61	int r;	32✔
62
63	assert(a >= 0);	32✔
64	assert(a < _ACTION_MAX);	32✔
65
66	if (!actions[a])	32✔
67	return -EINVAL;
68
69	r = acquire_bus_full(BUS_FULL, /* graceful = */ true, &bus);	32✔
70	if (r < 0)	32✔
71	return r;
72
73	polkit_agent_open_maybe();	32✔
74	(void) logind_set_wall_message(bus);	32✔
75
76	const char *method_with_flags = a == ACTION_SLEEP ? actions[a] : strjoina(actions[a], "WithFlags");	160✔
77
78	log_debug("%s org.freedesktop.login1.Manager %s dbus call.",	37✔
79	arg_dry_run ? "Would execute" : "Executing", method_with_flags);
80
81	if (arg_dry_run)	32✔
82	return 0;
83
84	SET_FLAG(flags, SD_LOGIND_ROOT_CHECK_INHIBITORS, arg_check_inhibitors > 0);	19✔
85	SET_FLAG(flags, SD_LOGIND_SKIP_INHIBITORS, arg_check_inhibitors == 0);	19✔
86	SET_FLAG(flags,	19✔
87	SD_LOGIND_REBOOT_VIA_KEXEC,
88	a == ACTION_KEXEC \|\| (a == ACTION_REBOOT && getenv_bool("SYSTEMCTL_SKIP_AUTO_KEXEC") <= 0));
89	/* Try to soft-reboot if /run/nextroot/ is a valid OS tree, but only if it's also a mount point.
90	* Otherwise, if people store new rootfs directly on /run/ tmpfs, 'systemctl reboot' would always
91	* soft-reboot, as /run/nextroot/ can never go away. */
92	SET_FLAG(flags,	24✔
93	SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP,
94	a == ACTION_REBOOT && getenv_bool("SYSTEMCTL_SKIP_AUTO_SOFT_REBOOT") <= 0 && path_is_mount_point("/run/nextroot") > 0);
95	SET_FLAG(flags, SD_LOGIND_SOFT_REBOOT, a == ACTION_SOFT_REBOOT);	19✔
96
97	r = bus_call_method(bus, bus_login_mgr, method_with_flags, &error, NULL, "t", flags);	19✔
98	if (r < 0 && FLAGS_SET(flags, SD_LOGIND_SKIP_INHIBITORS) &&	19✔
99	sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS)) {	×
100	sd_bus_error_free(&error);	×
101	flags &= ~SD_LOGIND_SKIP_INHIBITORS;	×
102	r = bus_call_method(bus, bus_login_mgr, method_with_flags, &error, NULL, "t", flags);	×
103	}
104	if (r < 0 && FLAGS_SET(flags, SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP) &&	×
105	sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS)) {	×
106	sd_bus_error_free(&error);	×
107	flags &= ~SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP;	×
108	r = bus_call_method(bus, bus_login_mgr, method_with_flags, &error, NULL, "t", flags);	×
109	}
110	if (r >= 0)	×
111	return 0;	19✔
112	if (geteuid() == 0 && sd_bus_error_has_name(&error, SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED))	×
113	return log_error_errno(r,	×
114	"The current polkit policy does not allow root to ignore inhibitors without authentication in order to %s.\n"
115	"To allow this action, a new polkit rule is needed.\n"
116	"See " POLKIT_RULES_DIR "/10-systemd-logind-root-ignore-inhibitors.rules.example.",
117	action_table[a].verb);
118	if (!sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD) \|\| a == ACTION_SLEEP)	×
119	return log_error_errno(r, "Call to %s failed: %s", actions[a], bus_error_message(&error, r));	×
120
121	/* Fall back to original methods in case there is an older version of systemd-logind */
122	log_debug("Method %s not available: %s. Falling back to %s", method_with_flags, bus_error_message(&error, r), actions[a]);	×
123	sd_bus_error_free(&error);	×
124
125	r = bus_call_method(bus, bus_login_mgr, actions[a], &error, NULL, "b", arg_ask_password);	×
126	if (r < 0)	×
127	return log_error_errno(r, "Call to %s failed: %s", actions[a], bus_error_message(&error, r));	×
128
129	return 0;
130	#else
131	return -ENOSYS;
132	#endif
133	}
134
135	int logind_check_inhibitors(enum action a) {	43✔
136	#if ENABLE_LOGIND
137	_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;	43✔
138	_cleanup_strv_free_ char **sessions = NULL;	43✔
139	const char what, who, why, mode;	43✔
140	uint32_t uid, pid;	43✔
141	sd_bus *bus;	43✔
142	unsigned c = 0;	43✔
143	int r;	43✔
144
145	assert(a >= 0);	43✔
146	assert(a < _ACTION_MAX);	43✔
147
148	if (arg_check_inhibitors == 0 \|\| arg_force > 0)	43✔
149	return 0;
150
151	if (arg_when > 0)	37✔
152	return 0;
153
154	if (arg_check_inhibitors < 0 && !on_tty())	37✔
155	return 0;
156
157	if (arg_transport != BUS_TRANSPORT_LOCAL)	×
158	return 0;
159
160	r = acquire_bus_full(BUS_FULL, /* graceful = */ true, &bus);	×
161	if ((ERRNO_IS_NEG_DISCONNECT(r) \|\| r == -ENOENT) && geteuid() == 0)	×
162	return 0; /* When D-Bus is not running (ECONNREFUSED) or D-Bus socket is not created (ENOENT),
163	* allow root to force a shutdown. E.g. when running at the emergency console. */
164	if (r < 0)	×
165	return r;
166
167	r = bus_call_method(bus, bus_login_mgr, "ListInhibitors", NULL, &reply, NULL);	×
168	if (r < 0)	×
169	/* If logind is not around, then there are no inhibitors... */
170	return 0;
171
172	r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");	×
173	if (r < 0)	×
174	return bus_log_parse_error(r);	×
175
176	while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {	×
177	_cleanup_free_ char comm = NULL, user = NULL;	×
178	_cleanup_strv_free_ char **sv = NULL;	×
179
180	if (!STR_IN_SET(mode, "block", "block-weak"))	×
181	continue;	×
182
183	if (streq(mode, "block-weak") && (geteuid() == 0 \|\| geteuid() == uid \|\| !on_tty()))	×
184	continue;	×
185
186	sv = strv_split(what, ":");	×
187	if (!sv)	×
188	return log_oom();	×
189
190	if (!pid_is_valid((pid_t) pid))	×
191	return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Invalid PID "PID_FMT".", (pid_t) pid);	×
192
193	if (!strv_contains(sv,	×
194	IN_SET(a,
195	ACTION_HALT,
196	ACTION_POWEROFF,
197	ACTION_REBOOT,
198	ACTION_KEXEC) ? "shutdown" : "sleep"))
199	continue;	×
200
201	(void) pid_get_comm(pid, &comm);	×
202	user = uid_to_name(uid);	×
203
204	log_warning("Operation inhibited by \"%s\" (PID "PID_FMT" \"%s\", user %s), reason is \"%s\".",	×
205	who, (pid_t) pid, strna(comm), strna(user), why);
206
207	c++;	×
208	}
209	if (r < 0)	×
210	return bus_log_parse_error(r);	×
211
212	r = sd_bus_message_exit_container(reply);	×
213	if (r < 0)	×
214	return bus_log_parse_error(r);	×
215
216	/* root respects inhibitors since v257 but keeps ignoring sessions by default */
217	if (arg_check_inhibitors < 0 && c == 0 && geteuid() == 0)	×
218	return 0;
219
220	/* Check for current sessions */
221	sd_get_sessions(&sessions);	×
222	STRV_FOREACH(s, sessions) {	×
223	_cleanup_free_ char type = NULL, tty = NULL, seat = NULL, user = NULL, service = NULL, class = NULL;	×
224
225	if (sd_session_get_uid(*s, &uid) < 0 \|\| uid == getuid())	×
226	continue;	×
227
228	if (sd_session_get_class(*s, &class) < 0 \|\| !streq(class, "user"))	×
229	continue;	×
230
231	if (sd_session_get_type(*s, &type) < 0 \|\| !STR_IN_SET(type, "x11", "wayland", "tty", "mir"))	×
232	continue;	×
233
234	sd_session_get_tty(*s, &tty);	×
235	sd_session_get_seat(*s, &seat);	×
236	sd_session_get_service(*s, &service);	×
237	user = uid_to_name(uid);	×
238
239	log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);	×
240	c++;	×
241	}
242
243	if (c <= 0)	×
244	return 0;
245
UNCOV 246	return log_error_errno(SYNTHETIC_ERRNO(EPERM),	×
247	"Please retry operation after closing inhibitors and logging out other users.\n"
248	"'systemd-inhibit' can be used to list active inhibitors.\n"
249	"Alternatively, ignore inhibitors and users with 'systemctl %s -i'.",
250	action_table[a].verb);
251	#else
252	return 0;
253	#endif
254	}
255
256	int prepare_firmware_setup(void) {	29✔
257
258	if (!arg_firmware_setup)	29✔
259	return 0;	29✔
260
261	#if ENABLE_LOGIND
262	_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;	×
263	sd_bus *bus;	×
264	int r;	×
265
266	r = acquire_bus(BUS_FULL, &bus);	×
267	if (r < 0)	×
268	return r;
269
270	r = bus_call_method(bus, bus_login_mgr, "SetRebootToFirmwareSetup", &error, NULL, "b", true);	×
271	if (r < 0)	×
272	return log_error_errno(r, "Cannot indicate to EFI to boot into setup mode: %s", bus_error_message(&error, r));	×
273
274	return 0;
275	#else
276	return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
277	"Booting into firmware setup not supported.");
278	#endif
279	}
280
281	int prepare_boot_loader_menu(void) {	29✔
282
283	if (arg_boot_loader_menu == USEC_INFINITY)	29✔
284	return 0;	29✔
285
286	#if ENABLE_LOGIND
287	_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;	×
288	sd_bus *bus;	×
289	int r;	×
290
291	r = acquire_bus(BUS_FULL, &bus);	×
292	if (r < 0)	×
293	return r;
294
295	r = bus_call_method(bus, bus_login_mgr, "SetRebootToBootLoaderMenu", &error, NULL, "t", arg_boot_loader_menu);	×
296	if (r < 0)	×
297	return log_error_errno(r, "Cannot indicate to boot loader to enter boot loader entry menu: %s", bus_error_message(&error, r));	×
298
299	return 0;
300	#else
301	return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
302	"Booting into boot loader menu not supported.");
303	#endif
304	}
305
306	int prepare_boot_loader_entry(void) {	29✔
307
308	if (!arg_boot_loader_entry)	29✔
309	return 0;	29✔
310
311	#if ENABLE_LOGIND
312	_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;	×
313	sd_bus *bus;	×
314	int r;	×
315
316	r = acquire_bus(BUS_FULL, &bus);	×
317	if (r < 0)	×
318	return r;
319
320	r = bus_call_method(bus, bus_login_mgr, "SetRebootToBootLoaderEntry", &error, NULL, "s", arg_boot_loader_entry);	×
321	if (r < 0)	×
322	return log_error_errno(r, "Cannot set boot into loader entry '%s': %s", arg_boot_loader_entry, bus_error_message(&error, r));	×
323
324	return 0;
325	#else
326	return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
327	"Booting into boot loader entry not supported.");
328	#endif
329	}
330
331	int logind_schedule_shutdown(enum action a) {	3✔
332	#if ENABLE_LOGIND
333	_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;	3✔
334	const char *action;	3✔
335	sd_bus *bus;	3✔
336	int r;	3✔
337
338	assert(a >= 0);	3✔
339	assert(a < _ACTION_MAX);	3✔
340
341	r = acquire_bus(BUS_FULL, &bus);	3✔
342	if (r < 0)	3✔
343	return r;
344
345	action = action_table[a].verb;	3✔
346	if (!action)	3✔
347	return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Scheduling not supported for this action.");	×
348
349	if (arg_dry_run)	3✔
350	action = strjoina("dry-", action);	×
351
352	(void) logind_set_wall_message(bus);	3✔
353
354	r = bus_call_method(bus, bus_login_mgr, "ScheduleShutdown", &error, NULL, "st", action, arg_when);	3✔
355	if (r < 0)	3✔
356	return log_warning_errno(r, "Failed to schedule shutdown: %s", bus_error_message(&error, r));	×
357
358	if (!arg_quiet)	3✔
359	logind_show_shutdown();	3✔
360
361	return 0;
362	#else
363	return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
364	"Cannot schedule shutdown without logind support, proceeding with immediate shutdown.");
365	#endif
366	}
367
368	int logind_cancel_shutdown(void) {	3✔
369	#if ENABLE_LOGIND
370	_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;	3✔
371	sd_bus *bus;	3✔
372	int r;	3✔
373
374	r = acquire_bus(BUS_FULL, &bus);	3✔
375	if (r < 0)	3✔
376	return r;
377
378	(void) logind_set_wall_message(bus);	3✔
379
380	r = bus_call_method(bus, bus_login_mgr, "CancelScheduledShutdown", &error, NULL, NULL);	3✔
381	if (r < 0)	3✔
382	return log_warning_errno(r, "Failed to talk to logind, shutdown hasn't been cancelled: %s", bus_error_message(&error, r));	×
383
384	return 0;
385	#else
386	return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
387	"Not compiled with logind support, cannot cancel scheduled shutdowns.");
388	#endif
389	}
390
391	int logind_show_shutdown(void) {	4✔
392	#if ENABLE_LOGIND
393	_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;	×
394	_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;	4✔
395	sd_bus *bus;	4✔
396	const char action, pretty_action;	4✔
397	uint64_t elapse;	4✔
398	int r;	4✔
399
400	r = acquire_bus(BUS_FULL, &bus);	4✔
401	if (r < 0)	4✔
402	return r;
403
404	r = bus_get_property(bus, bus_login_mgr, "ScheduledShutdown", &error, &reply, "(st)");	4✔
405	if (r < 0)	4✔
406	return log_error_errno(r, "Failed to query scheduled shutdown: %s", bus_error_message(&error, r));	×
407
408	r = sd_bus_message_read(reply, "(st)", &action, &elapse);	4✔
409	if (r < 0)	4✔
410	return r;
411
412	if (isempty(action))	4✔
413	return log_full_errno(arg_quiet ? LOG_DEBUG : LOG_ERR, SYNTHETIC_ERRNO(ENODATA), "No scheduled shutdown.");	×
414
415	if (STR_IN_SET(action, "halt", "poweroff", "exit"))	4✔
416	pretty_action = "Shutdown";
417	else if (streq(action, "kexec"))	2✔
418	pretty_action = "Reboot via kexec";
419	else if (streq(action, "reboot"))	2✔
420	pretty_action = "Reboot";
421	else /* If we don't recognize the action string, we'll show it as-is */
422	pretty_action = action;	×
423
424	if (IN_SET(arg_action, ACTION_SYSTEMCTL, ACTION_SYSTEMCTL_SHOW_SHUTDOWN))	4✔
425	log_info("%s scheduled for %s, use 'systemctl %s --when=cancel' to cancel.",	×
426	pretty_action,
427	FORMAT_TIMESTAMP_STYLE(elapse, arg_timestamp_style),
428	action);
429	else
430	log_info("%s scheduled for %s, use 'shutdown -c' to cancel.",	4✔
431	pretty_action,
432	FORMAT_TIMESTAMP_STYLE(elapse, arg_timestamp_style));
433
434	return 0;
435	#else
436	return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
437	"Not compiled with logind support, cannot show scheduled shutdowns.");
438	#endif
439	}
440
441	int help_boot_loader_entry(void) {	×
442	#if ENABLE_LOGIND
443	_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;	×
444	_cleanup_strv_free_ char **l = NULL;	×
445	sd_bus *bus;	×
446	int r;	×
447
448	/* This is called without checking runtime scope and bus transport like we do in parse_argv().
449	* Loading boot entries is only supported by system scope. Let's gracefully adjust them. */
450	arg_runtime_scope = RUNTIME_SCOPE_SYSTEM;	×
451	if (arg_transport == BUS_TRANSPORT_CAPSULE) {	×
452	arg_host = NULL;	×
453	arg_transport = BUS_TRANSPORT_LOCAL;	×
454	}
455
456	r = acquire_bus(BUS_FULL, &bus);	×
457	if (r < 0)	×
458	return r;
459
460	r = bus_get_property_strv(bus, bus_login_mgr, "BootLoaderEntries", &error, &l);	×
461	if (r < 0)	×
462	return log_error_errno(r, "Failed to enumerate boot loader entries: %s", bus_error_message(&error, r));	×
463
464	if (strv_isempty(l))	×
465	return log_error_errno(SYNTHETIC_ERRNO(ENODATA), "No boot loader entries discovered.");	×
466
467	STRV_FOREACH(i, l)	×
468	puts(*i);	×
469
470	return 0;
471	#else
472	return log_error_errno(SYNTHETIC_ERRNO(ENOSYS),
473	"Not compiled with logind support, cannot display boot loader entries.");
474	#endif
475	}

systemd / systemd / 14766779411

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