chiark / gitweb /
Prep v221: Some more cleanup and a few fixes
[elogind.git] / src / login / loginctl.c
index ec102ae4c7c7e62e0d9ab2f82ceecf2d2250ef08..bd7ec27da42500435537949aaaddc96b8c47d702 100644 (file)
@@ -26,6 +26,7 @@
 #include <locale.h>
 
 #include "sd-bus.h"
+#include "sd-login.h"
 #include "bus-util.h"
 #include "bus-error.h"
 #include "log.h"
@@ -41,6 +42,9 @@
 #include "cgroup-util.h"
 #include "spawn-polkit-agent.h"
 #include "verbs.h"
+#include "process-util.h"
+#include "terminal-util.h"
+#include "signal-util.h"
 
 static char **arg_property = NULL;
 static bool arg_all = false;
@@ -52,8 +56,10 @@ static int arg_signal = SIGTERM;
 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
 static char *arg_host = NULL;
 static bool arg_ask_password = true;
+#if 0
 static unsigned arg_lines = 10;
 static OutputMode arg_output = OUTPUT_SHORT;
+#endif // 0
 
 static void pager_open_if_enabled(void) {
 
@@ -260,7 +266,7 @@ static int show_unit_cgroup(sd_bus *bus, const char *interface, const char *unit
         if (isempty(cgroup))
                 return 0;
 
-        if (cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, cgroup, false) != 0 && leader <= 0)
+        if (cg_is_empty_recursive(ELOGIND_CGROUP_CONTROLLER, cgroup, false) != 0 && leader <= 0)
                 return 0;
 
         c = columns();
@@ -269,47 +275,86 @@ static int show_unit_cgroup(sd_bus *bus, const char *interface, const char *unit
         else
                 c = 0;
 
-        show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, cgroup, "\t\t  ", c, false, &leader, leader > 0, get_output_flags());
+        show_cgroup_and_extra(ELOGIND_CGROUP_CONTROLLER, cgroup, "\t\t  ", c, false, &leader, leader > 0, get_output_flags());
         return 0;
 }
 
 typedef struct SessionStatusInfo {
-        const char *id;
+        char *id;
         uid_t uid;
-        const char *name;
+        char *name;
         struct dual_timestamp timestamp;
         unsigned int vtnr;
-        const char *seat;
-        const char *tty;
-        const char *display;
+        char *seat;
+        char *tty;
+        char *display;
         bool remote;
-        const char *remote_host;
-        const char *remote_user;
-        const char *service;
+        char *remote_host;
+        char *remote_user;
+        char *service;
         pid_t leader;
-        const char *type;
-        const char *class;
-        const char *state;
-        const char *scope;
-        const char *desktop;
+        char *type;
+        char *class;
+        char *state;
+        char *scope;
+        char *desktop;
 } SessionStatusInfo;
 
 typedef struct UserStatusInfo {
         uid_t uid;
-        const char *name;
+        char *name;
         struct dual_timestamp timestamp;
-        const char *state;
+        char *state;
         char **sessions;
-        const char *display;
-        const char *slice;
+        char *display;
+        char *slice;
 } UserStatusInfo;
 
 typedef struct SeatStatusInfo {
-        const char *id;
-        const char *active_session;
+        char *id;
+        char *active_session;
         char **sessions;
 } SeatStatusInfo;
 
+static void session_status_info_clear(SessionStatusInfo *info) {
+        if (info) {
+                free(info->id);
+                free(info->name);
+                free(info->seat);
+                free(info->tty);
+                free(info->display);
+                free(info->remote_host);
+                free(info->remote_user);
+                free(info->service);
+                free(info->type);
+                free(info->class);
+                free(info->state);
+                free(info->scope);
+                free(info->desktop);
+                zero(*info);
+        }
+}
+
+static void user_status_info_clear(UserStatusInfo *info) {
+        if (info) {
+                free(info->name);
+                free(info->state);
+                strv_free(info->sessions);
+                free(info->display);
+                free(info->slice);
+                zero(*info);
+        }
+}
+
+static void seat_status_info_clear(SeatStatusInfo *info) {
+        if (info) {
+                free(info->id);
+                free(info->active_session);
+                strv_free(info->sessions);
+                zero(*info);
+        }
+}
+
 static int prop_map_first_of_struct(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
         const char *contents;
         int r;
@@ -401,7 +446,7 @@ static int print_session_status_info(sd_bus *bus, const char *path, bool *new_li
 
         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
         char since2[FORMAT_TIMESTAMP_MAX], *s2;
-        SessionStatusInfo i = {};
+        _cleanup_(session_status_info_clear) SessionStatusInfo i = {};
         int r;
 
         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);
@@ -492,7 +537,7 @@ static int print_session_status_info(sd_bus *bus, const char *path, bool *new_li
         if (i.scope) {
                 printf("\t    Unit: %s\n", i.scope);
                 show_unit_cgroup(bus, "org.freedesktop.systemd1.Scope", i.scope, i.leader);
-
+#if 0
                 if (arg_transport == BUS_TRANSPORT_LOCAL) {
 
                         show_journal_by_unit(
@@ -508,6 +553,8 @@ static int print_session_status_info(sd_bus *bus, const char *path, bool *new_li
                                         true,
                                         NULL);
                 }
+
+#endif // 0
         }
 
         return 0;
@@ -529,14 +576,12 @@ static int print_user_status_info(sd_bus *bus, const char *path, bool *new_line)
 
         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
         char since2[FORMAT_TIMESTAMP_MAX], *s2;
-        UserStatusInfo i = {};
+        _cleanup_(user_status_info_clear) UserStatusInfo i = {};
         int r;
 
         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);
-        if (r < 0) {
-                log_error_errno(r, "Could not get properties: %m");
-                goto finish;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Could not get properties: %m");
 
         if (*new_line)
                 printf("\n");
@@ -576,7 +621,7 @@ static int print_user_status_info(sd_bus *bus, const char *path, bool *new_line)
         if (i.slice) {
                 printf("\t    Unit: %s\n", i.slice);
                 show_unit_cgroup(bus, "org.freedesktop.systemd1.Slice", i.slice, 0);
-
+#if 0
                 show_journal_by_unit(
                                 stdout,
                                 i.slice,
@@ -589,12 +634,11 @@ static int print_user_status_info(sd_bus *bus, const char *path, bool *new_line)
                                 SD_JOURNAL_LOCAL_ONLY,
                                 true,
                                 NULL);
-        }
 
-finish:
-        strv_free(i.sessions);
+#endif // 0
+        }
 
-        return r;
+        return 0;
 }
 
 static int print_seat_status_info(sd_bus *bus, const char *path, bool *new_line) {
@@ -606,14 +650,12 @@ static int print_seat_status_info(sd_bus *bus, const char *path, bool *new_line)
                 {}
         };
 
-        SeatStatusInfo i = {};
+        _cleanup_(seat_status_info_clear) SeatStatusInfo i = {};
         int r;
 
         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);
-        if (r < 0) {
-                log_error_errno(r, "Could not get properties: %m");
-                goto finish;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Could not get properties: %m");
 
         if (*new_line)
                 printf("\n");
@@ -650,10 +692,7 @@ static int print_seat_status_info(sd_bus *bus, const char *path, bool *new_line)
                 show_sysfs(i.id, "\t\t  ", c);
         }
 
-finish:
-        strv_free(i.sessions);
-
-        return r;
+        return 0;
 }
 
 static int show_properties(sd_bus *bus, const char *path, bool *new_line) {
@@ -1148,6 +1187,245 @@ static int terminate_seat(int argc, char *argv[], void *userdata) {
         return 0;
 }
 
+static int check_inhibitors(sd_bus *bus, const char *verb, const char *inhibit_what) {
+        _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+        _cleanup_strv_free_ char **sessions = NULL;
+        const char *what, *who, *why, *mode;
+        uint32_t uid, pid;
+        unsigned c = 0;
+        char **s;
+        int r;
+
+        assert(bus);
+
+        if (geteuid() == 0)
+                return 0;
+
+        if (!on_tty())
+                return 0;
+
+        r = sd_bus_call_method(
+                        bus,
+                        "org.freedesktop.login1",
+                        "/org/freedesktop/login1",
+                        "org.freedesktop.login1.Manager",
+                        "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 (!streq(mode, "block"))
+                        continue;
+
+                sv = strv_split(what, ":");
+                if (!sv)
+                        return log_oom();
+
+                if (!strv_contains(sv, inhibit_what))
+                        continue;
+
+                get_process_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, 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);
+
+        /* 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 || (!streq(type, "x11") && !streq(type, "tty")))
+                        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;
+
+        log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'loginctl %s -i'.", verb);
+
+        return -EPERM;
+}
+
+static int poweroff(int argc, char *argv[], void *userdata) {
+        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+        sd_bus *bus = userdata;
+        int r;
+
+        assert(bus);
+
+        r = check_inhibitors(bus, "poweroff", "shutdown");
+        if (r < 0)
+                return r;
+
+        polkit_agent_open_if_enabled();
+
+        r = sd_bus_call_method(
+                        bus,
+                        "org.freedesktop.login1",
+                        "/org/freedesktop/login1",
+                        "org.freedesktop.login1.Manager",
+                        "PowerOff",
+                        &error,
+                        NULL,
+                        "b", arg_ask_password);
+        if (r < 0)
+                log_error("Failed to power off: %s", bus_error_message(&error, r));
+
+        return r;
+}
+
+static int reboot(int argc, char *argv[], void *userdata) {
+        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+        sd_bus *bus = userdata;
+        int r;
+
+        assert(bus);
+
+        r = check_inhibitors(bus, "reboot", "shutdown");
+        if (r < 0)
+                return r;
+
+        polkit_agent_open_if_enabled();
+
+        r = sd_bus_call_method(
+                        bus,
+                        "org.freedesktop.login1",
+                        "/org/freedesktop/login1",
+                        "org.freedesktop.login1.Manager",
+                        "Reboot",
+                        &error,
+                        NULL,
+                        "b", arg_ask_password);
+        if (r < 0)
+                log_error("Failed to reboot: %s", bus_error_message(&error, r));
+
+        return r;
+}
+
+static int suspend(int argc, char *argv[], void *userdata) {
+        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+        sd_bus *bus = userdata;
+        int r;
+
+        assert(bus);
+
+        r = check_inhibitors(bus, "suspend", "sleep");
+        if (r < 0)
+                return r;
+
+        polkit_agent_open_if_enabled();
+
+        r = sd_bus_call_method(
+                        bus,
+                        "org.freedesktop.login1",
+                        "/org/freedesktop/login1",
+                        "org.freedesktop.login1.Manager",
+                        "Suspend",
+                        &error,
+                        NULL,
+                        "b", arg_ask_password);
+        if (r < 0)
+                log_error("Failed to suspend: %s", bus_error_message(&error, r));
+
+        return r;
+}
+
+static int hibernate(int argc, char *argv[], void *userdata) {
+        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+        sd_bus *bus = userdata;
+        int r;
+
+        assert(bus);
+
+        r = check_inhibitors(bus, "hibernate", "sleep");
+        if (r < 0)
+                return r;
+
+        polkit_agent_open_if_enabled();
+
+        r = sd_bus_call_method(
+                        bus,
+                        "org.freedesktop.login1",
+                        "/org/freedesktop/login1",
+                        "org.freedesktop.login1.Manager",
+                        "Hibernate",
+                        &error,
+                        NULL,
+                        "b", arg_ask_password);
+        if (r < 0)
+                log_error("Failed to hibernate: %s", bus_error_message(&error, r));
+
+        return r;
+}
+
+static int hybrid_sleep(int argc, char *argv[], void *userdata) {
+        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+        sd_bus *bus = userdata;
+        int r;
+
+        assert(bus);
+
+        r = check_inhibitors(bus, "hybrid-sleep", "sleep");
+        if (r < 0)
+                return r;
+
+        polkit_agent_open_if_enabled();
+
+        r = sd_bus_call_method(
+                        bus,
+                        "org.freedesktop.login1",
+                        "/org/freedesktop/login1",
+                        "org.freedesktop.login1.Manager",
+                        "HybridSleep",
+                        &error,
+                        NULL,
+                        "b", arg_ask_password);
+        if (r < 0)
+                log_error("Failed to hybrid sleep: %s", bus_error_message(&error, r));
+
+        return r;
+}
+
 static int help(int argc, char *argv[], void *userdata) {
 
         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
@@ -1164,9 +1442,11 @@ static int help(int argc, char *argv[], void *userdata) {
                "  -l --full                Do not ellipsize output\n"
                "     --kill-who=WHO        Who to send signal to\n"
                "  -s --signal=SIGNAL       Which signal to send\n"
+#if 0
                "  -n --lines=INTEGER       Number of journal entries to show\n"
                "  -o --output=STRING       Change journal output mode (short, short-monotonic,\n"
                "                           verbose, export, json, json-pretty, json-sse, cat)\n\n"
+#endif // 0
                "Session Commands:\n"
                "  list-sessions            List sessions\n"
                "  session-status [ID...]   Show session status\n"
@@ -1193,6 +1473,12 @@ static int help(int argc, char *argv[], void *userdata) {
                "  attach NAME DEVICE...    Attach one or more devices to a seat\n"
                "  flush-devices            Flush all device associations\n"
                "  terminate-seat NAME...   Terminate all sessions on one or more seats\n"
+               "System Commands:\n"
+               "  poweroff                 Turn off the machine\n"
+               "  reboot                   Reboot the machine\n"
+               "  suspend                  Suspend the machine to memory\n"
+               "  hibernate                Suspend the machine to disk\n"
+               "  hybrid-sleep             Suspend the machine to memory and disk\n"
                , program_invocation_short_name);
 
         return 0;
@@ -1221,8 +1507,10 @@ static int parse_argv(int argc, char *argv[]) {
                 { "host",            required_argument, NULL, 'H'                 },
                 { "machine",         required_argument, NULL, 'M'                 },
                 { "no-ask-password", no_argument,       NULL, ARG_NO_ASK_PASSWORD },
+#if 0
                 { "lines",           required_argument, NULL, 'n'                 },
                 { "output",          required_argument, NULL, 'o'                 },
+#endif //
                 {}
         };
 
@@ -1231,7 +1519,7 @@ static int parse_argv(int argc, char *argv[]) {
         assert(argc >= 0);
         assert(argv);
 
-        while ((c = getopt_long(argc, argv, "hp:als:H:M:n:o:", options, NULL)) >= 0)
+        while ((c = getopt_long(argc, argv, "hp:als:H:M:", options, NULL)) >= 0)
 
                 switch (c) {
 
@@ -1263,7 +1551,7 @@ static int parse_argv(int argc, char *argv[]) {
                 case 'l':
                         arg_full = true;
                         break;
-
+#if 0
                 case 'n':
                         if (safe_atou(optarg, &arg_lines) < 0) {
                                 log_error("Failed to parse lines '%s'", optarg);
@@ -1278,7 +1566,7 @@ static int parse_argv(int argc, char *argv[]) {
                                 return -EINVAL;
                         }
                         break;
-
+#endif // 0
                 case ARG_NO_PAGER:
                         arg_no_pager = true;
                         break;
@@ -1350,6 +1638,11 @@ static int loginctl_main(int argc, char *argv[], sd_bus *bus) {
                 { "attach",            3,        VERB_ANY, 0,            attach            },
                 { "flush-devices",     VERB_ANY, 1,        0,            flush_devices     },
                 { "terminate-seat",    2,        VERB_ANY, 0,            terminate_seat    },
+                { "poweroff",          VERB_ANY, 1,        0,            poweroff          },
+                { "reboot",            VERB_ANY, 1,        0,            reboot            },
+                { "suspend",           VERB_ANY, 1,        0,            suspend           },
+                { "hibernate",         VERB_ANY, 1,        0,            hibernate         },
+                { "hybrid-sleep",      VERB_ANY, 1,        0,            hybrid_sleep      },
                 {}
         };
 
@@ -1357,7 +1650,7 @@ static int loginctl_main(int argc, char *argv[], sd_bus *bus) {
 }
 
 int main(int argc, char *argv[]) {
-        _cleanup_bus_close_unref_ sd_bus *bus = NULL;
+        _cleanup_bus_flush_close_unref_ sd_bus *bus = NULL;
         int r;
 
         setlocale(LC_ALL, "");