#include <sys/ioctl.h>
#include <termios.h>
#include <unistd.h>
+#include <fcntl.h>
+#include <sys/socket.h>
#include <dbus/dbus.h>
#include "macro.h"
#include "set.h"
#include "utmp-wtmp.h"
+#include "special.h"
+#include "initreq.h"
+#include "strv.h"
static const char *arg_type = NULL;
static bool arg_all = false;
static bool arg_immediate = false;
static bool arg_no_wtmp = false;
static bool arg_no_sync = false;
+static bool arg_no_wall = false;
static bool arg_dry = false;
static char **arg_wall = NULL;
enum action {
ACTION_HALT,
ACTION_POWEROFF,
ACTION_REBOOT,
- ACTION_RUNLEVEL1,
ACTION_RUNLEVEL2,
ACTION_RUNLEVEL3,
ACTION_RUNLEVEL4,
ACTION_RUNLEVEL5,
ACTION_RESCUE,
+ ACTION_EMERGENCY,
+ ACTION_DEFAULT,
ACTION_RELOAD,
ACTION_REEXEC,
ACTION_RUNLEVEL,
static bool error_is_no_service(DBusError *error) {
+ assert(error);
+
if (!dbus_error_is_set(error))
return false;
static int bus_iter_get_basic_and_next(DBusMessageIter *iter, int type, void *data, bool next) {
+ assert(iter);
+ assert(data);
+
if (dbus_message_iter_get_arg_type(iter) != type)
return -EIO;
return 0;
}
+static int bus_check_peercred(DBusConnection *c) {
+ int fd;
+ struct ucred ucred;
+ socklen_t l;
+
+ assert(c);
+
+ assert_se(dbus_connection_get_unix_fd(c, &fd));
+
+ l = sizeof(struct ucred);
+ if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0) {
+ log_error("SO_PEERCRED failed: %m");
+ return -errno;
+ }
+
+ if (l != sizeof(struct ucred)) {
+ log_error("SO_PEERCRED returned wrong size.");
+ return -E2BIG;
+ }
+
+ if (ucred.uid != 0)
+ return -EPERM;
+
+ return 1;
+}
+
static int columns(void) {
static int parsed_columns = 0;
const char *e;
}
+static void warn_wall(enum action action) {
+ static const char *table[_ACTION_MAX] = {
+ [ACTION_HALT] = "The system is going down for system halt NOW!",
+ [ACTION_REBOOT] = "The system is going down for reboot NOW!",
+ [ACTION_POWEROFF] = "The system is going down for power-off NOW!",
+ [ACTION_RESCUE] = "The system is going down to rescue mode NOW!",
+ [ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!"
+ };
+
+ if (arg_no_wall)
+ return;
+
+ if (arg_wall) {
+ char *p;
+
+ if (!(p = strv_join(arg_wall, " "))) {
+ log_error("Failed to join strings.");
+ return;
+ }
+
+ if (*p) {
+ utmp_wall(p);
+ free(p);
+ return;
+ }
+
+ free(p);
+ }
+
+ if (!table[action])
+ return;
+
+ utmp_wall(table[action]);
+}
+
static int list_units(DBusConnection *bus, char **args, unsigned n) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
dbus_error_init(&error);
+ assert(bus);
+
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
dbus_error_init(&error);
+ assert(bus);
+
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
dbus_error_init(&error);
+ assert(bus);
+ assert(args);
+
for (i = 1; i < n; i++) {
if (!(m = dbus_message_new_method_call(
dbus_error_init(&error);
+ assert(bus);
+ assert(args);
+
for (i = 1; i < n; i++) {
unsigned id;
const char *path;
return r;
}
+static enum action verb_to_action(const char *verb) {
+ if (streq(verb, "halt"))
+ return ACTION_HALT;
+ else if (streq(verb, "poweroff"))
+ return ACTION_POWEROFF;
+ else if (streq(verb, "reboot"))
+ return ACTION_REBOOT;
+ else if (streq(verb, "rescue"))
+ return ACTION_RESCUE;
+ else if (streq(verb, "emergency"))
+ return ACTION_EMERGENCY;
+ else if (streq(verb, "default"))
+ return ACTION_DEFAULT;
+ else
+ return ACTION_INVALID;
+}
+
static int start_unit(DBusConnection *bus, char **args, unsigned n) {
static const char * const table[_ACTION_MAX] = {
- [ACTION_HALT] = "halt.target",
- [ACTION_POWEROFF] = "poweroff.target",
- [ACTION_REBOOT] = "reboot.target",
- [ACTION_RUNLEVEL1] = "runlevel1.target",
- [ACTION_RUNLEVEL2] = "runlevel2.target",
- [ACTION_RUNLEVEL3] = "runlevel3.target",
- [ACTION_RUNLEVEL4] = "runlevel4.target",
- [ACTION_RUNLEVEL5] = "runlevel5.target",
- [ACTION_RESCUE] = "rescue.target"
+ [ACTION_HALT] = SPECIAL_HALT_TARGET,
+ [ACTION_POWEROFF] = SPECIAL_POWEROFF_TARGET,
+ [ACTION_REBOOT] = SPECIAL_REBOOT_TARGET,
+ [ACTION_RUNLEVEL2] = SPECIAL_RUNLEVEL2_TARGET,
+ [ACTION_RUNLEVEL3] = SPECIAL_RUNLEVEL3_TARGET,
+ [ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET,
+ [ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET,
+ [ACTION_RESCUE] = SPECIAL_RESCUE_TARGET,
+ [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_SERVICE,
+ [ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET
};
int r;
unsigned i;
- const char *method, *mode;
+ const char *method, *mode, *one_name;
Set *s = NULL;
+ assert(bus);
+
if (arg_action == ACTION_SYSTEMCTL) {
method =
- streq(args[0], "start") ? "StartUnit" :
streq(args[0], "stop") ? "StopUnit" :
streq(args[0], "reload") ? "ReloadUnit" :
streq(args[0], "restart") ? "RestartUnit" :
- /* isolate */ "StartUnit";
+ "StartUnit";
mode =
- streq(args[0], "isolate") ? "isolate" :
- arg_replace ? "replace" :
- "fail";
+ (streq(args[0], "isolate") ||
+ streq(args[0], "rescue") ||
+ streq(args[0], "emergency")) ? "isolate" :
+ arg_replace ? "replace" :
+ "fail";
- if (arg_block) {
- if ((r = enable_wait_for_jobs(bus)) < 0) {
- log_error("Could not watch jobs: %s", strerror(-r));
- goto finish;
- }
+ one_name = table[verb_to_action(args[0])];
- if (!(s = set_new(string_hash_func, string_compare_func))) {
- log_error("Failed to allocate set.");
- r = -ENOMEM;
- goto finish;
- }
- }
} else {
assert(arg_action < ELEMENTSOF(table));
assert(table[arg_action]);
method = "StartUnit";
- mode = arg_action == ACTION_RESCUE ? "isolate" : "replace";
+
+ mode = (arg_action == ACTION_EMERGENCY ||
+ arg_action == ACTION_RESCUE) ? "isolate" : "replace";
+
+ one_name = table[arg_action];
+ }
+
+ if (arg_block) {
+ if ((r = enable_wait_for_jobs(bus)) < 0) {
+ log_error("Could not watch jobs: %s", strerror(-r));
+ goto finish;
+ }
+
+ if (!(s = set_new(string_hash_func, string_compare_func))) {
+ log_error("Failed to allocate set.");
+ r = -ENOMEM;
+ goto finish;
+ }
}
r = 0;
- if (arg_action == ACTION_SYSTEMCTL) {
+ if (one_name) {
+ if ((r = start_unit_one(bus, method, one_name, mode, s)) <= 0)
+ goto finish;
+ } else {
for (i = 1; i < n; i++)
if ((r = start_unit_one(bus, method, args[i], mode, s)) < 0)
goto finish;
-
- if (arg_block)
- r = wait_for_jobs(bus, s);
-
- } else {
- if ((r = start_unit_one(bus, method, table[arg_action], mode, s)) <= 0)
- goto finish;
}
+ if (arg_block)
+ r = wait_for_jobs(bus, s);
+
finish:
if (s)
set_free_free(s);
return r;
}
+static int start_special(DBusConnection *bus, char **args, unsigned n) {
+ assert(bus);
+ assert(args);
+
+ warn_wall(verb_to_action(args[0]));
+
+ return start_unit(bus, args, n);
+}
+
static DBusHandlerResult monitor_filter(DBusConnection *connection, DBusMessage *message, void *data) {
DBusError error;
DBusMessage *m = NULL, *reply = NULL;
static int systemctl_help(void) {
printf("%s [options]\n\n"
- "Send control commands to the init system.\n\n"
+ "Send control commands to the init daemon.\n\n"
" -h --help Show this help\n"
" -t --type=TYPE List only units of a particular type\n"
" -a --all Show all units, including dead ones\n"
" --replace When installing a new job, replace existing conflicting ones\n"
" --system Connect to system bus\n"
" --session Connect to session bus\n"
- " --block Wait until operation finished\n\n"
+ " --block Wait until operation finished\n"
+ " --no-wall Don't send wall message before reboot/halt/power-off\n\n"
"Commands:\n"
" list-units List units\n"
" list-jobs List jobs\n"
" monitor Monitor unit/job changes\n"
" dump Dump server status\n"
" snapshot [NAME] Create a snapshot\n"
- " daemon-reload Reload daemon configuration\n"
- " daemon-reexecute Reexecute daemon\n"
- " daemon-exit Ask the daemon to quit\n"
+ " daemon-reload Reload init daemon configuration\n"
+ " daemon-reexecute Reexecute init daemon\n"
+ " daemon-exit Ask the init daemon to quit\n"
" show-environment Dump environment\n"
" set-environment [NAME=VALUE...] Set one or more environment variables\n"
- " unset-environment [NAME...] Unset one or more environment variables\n",
+ " unset-environment [NAME...] Unset one or more environment variables\n"
+ " halt Shut down and halt the system\n"
+ " reboot Shut down and reboot the system\n"
+ " poweroff Shut down and power off the system\n"
+ " default Enter default mode\n"
+ " rescue Enter rescue mode\n"
+ " emergency Enter emergency mode\n",
program_invocation_short_name);
return 0;
" -f --force Force immediate reboot/halt/power-off\n"
" -w --wtmp-only Don't reboot/halt/power-off, just write wtmp record\n"
" -d --no-wtmp Don't write wtmp record\n"
- " -n --no-sync Don't sync before reboot/halt/power-off\n",
+ " -n --no-sync Don't sync before reboot/halt/power-off\n"
+ " --no-wall Don't send wall message before reboot/halt/power-off\n",
program_invocation_short_name,
arg_action == ACTION_REBOOT ? "Reboot" :
arg_action == ACTION_POWEROFF ? "Power off" :
static int shutdown_help(void) {
- printf("%s [options] [TIME] [WALL...]\n\n"
+ printf("%s [options] [now] [WALL...]\n\n"
"Shut down the system.\n\n"
" --help Show this help\n"
" -H --halt Halt the machine\n"
" -P --poweroff Power-off the machine\n"
" -r --reboot Reboot the machine\n"
" -h Equivalent to --poweroff, overriden by --halt\n"
- " -k Don't reboot/halt/power-off, just send warnings\n",
+ " -k Don't reboot/halt/power-off, just send warnings\n"
+ " --no-wall Don't send wall message before reboot/halt/power-off\n",
program_invocation_short_name);
return 0;
static int telinit_help(void) {
printf("%s [options]\n\n"
- "Send control commands to the init system.\n\n"
- " --help Show this help\n\n"
+ "Send control commands to the init daemon.\n\n"
+ " --help Show this help\n"
+ " --no-wall Don't send wall message before reboot/halt/power-off\n\n"
"Commands:\n"
" 0 Power-off the machine\n"
" 6 Reboot the machine\n"
- " 1, 2, 3, 4, 5 Start runlevelX.target unit\n"
- " s, S Start the rescue.target unit\n"
- " q, Q Ask systemd to reload its configuration\n"
- " u, U Ask systemd to reexecute itself\n",
+ " 2, 3, 4, 5 Start runlevelX.target unit\n"
+ " 1, s, S Enter rescue mode\n"
+ " q, Q Reload init daemon configuration\n"
+ " u, U Reexecute init daemon\n",
program_invocation_short_name);
return 0;
ARG_REPLACE = 0x100,
ARG_SESSION,
ARG_SYSTEM,
- ARG_BLOCK
+ ARG_BLOCK,
+ ARG_NO_WALL
};
static const struct option options[] = {
{ "session", no_argument, NULL, ARG_SESSION },
{ "system", no_argument, NULL, ARG_SYSTEM },
{ "block", no_argument, NULL, ARG_BLOCK },
+ { "no-wall", no_argument, NULL, ARG_NO_WALL },
{ NULL, 0, NULL, 0 }
};
arg_block = true;
break;
+ case ARG_NO_WALL:
+ arg_no_wall = true;
+ break;
+
case '?':
return -EINVAL;
enum {
ARG_HELP = 0x100,
ARG_HALT,
- ARG_REBOOT
+ ARG_REBOOT,
+ ARG_NO_WALL
};
static const struct option options[] = {
{ "wtmp-only", no_argument, NULL, 'w' },
{ "no-wtmp", no_argument, NULL, 'd' },
{ "no-sync", no_argument, NULL, 'n' },
+ { "no-wall", no_argument, NULL, ARG_NO_WALL },
{ NULL, 0, NULL, 0 }
};
arg_no_sync = true;
break;
+ case ARG_NO_WALL:
+ arg_no_wall = true;
+ break;
+
case 'i':
case 'h':
/* Compatibility nops */
enum {
ARG_HELP = 0x100,
+ ARG_NO_WALL
};
static const struct option options[] = {
{ "halt", no_argument, NULL, 'H' },
{ "poweroff", no_argument, NULL, 'P' },
{ "reboot", no_argument, NULL, 'r' },
+ { "no-wall", no_argument, NULL, ARG_NO_WALL },
{ NULL, 0, NULL, 0 }
};
arg_dry = true;
break;
+ case ARG_NO_WALL:
+ arg_no_wall = true;
+ break;
+
case 't':
case 'a':
/* Compatibility nops */
}
}
+ if (argc > optind && !streq(argv[optind], "now"))
+ log_warning("First argument '%s' isn't 'now'. Ignoring.", argv[optind]);
+
/* We ignore the time argument */
if (argc > optind + 1)
arg_wall = argv + optind + 1;
optind = argc;
return 1;
-
}
static int telinit_parse_argv(int argc, char *argv[]) {
enum {
ARG_HELP = 0x100,
+ ARG_NO_WALL
};
static const struct option options[] = {
{ "help", no_argument, NULL, ARG_HELP },
+ { "no-wall", no_argument, NULL, ARG_NO_WALL },
{ NULL, 0, NULL, 0 }
};
} table[] = {
{ '0', ACTION_POWEROFF },
{ '6', ACTION_REBOOT },
- { '1', ACTION_RUNLEVEL1 },
+ { '1', ACTION_RESCUE },
{ '2', ACTION_RUNLEVEL2 },
{ '3', ACTION_RUNLEVEL3 },
{ '4', ACTION_RUNLEVEL4 },
telinit_help();
return 0;
+ case ARG_NO_WALL:
+ arg_no_wall = true;
+ break;
+
case '?':
return -EINVAL;
return systemctl_parse_argv(argc, argv);
}
-static int talk_upstart(DBusConnection *bus) {
- log_error("Talking upstart");
- return 0;
+static int action_to_runlevel(void) {
+
+ static const char table[_ACTION_MAX] = {
+ [ACTION_HALT] = '0',
+ [ACTION_POWEROFF] = '0',
+ [ACTION_REBOOT] = '6',
+ [ACTION_RUNLEVEL2] = '2',
+ [ACTION_RUNLEVEL3] = '3',
+ [ACTION_RUNLEVEL4] = '4',
+ [ACTION_RUNLEVEL5] = '5',
+ [ACTION_RESCUE] = '1'
+ };
+
+ assert(arg_action < _ACTION_MAX);
+
+ return table[arg_action];
+}
+
+static int talk_upstart(void) {
+ DBusMessage *m = NULL, *reply = NULL;
+ DBusError error;
+ int previous, rl, r;
+ char
+ env1_buf[] = "RUNLEVEL=X",
+ env2_buf[] = "PREVLEVEL=X";
+ char *env1 = env1_buf, *env2 = env2_buf;
+ const char *emit = "runlevel";
+ dbus_bool_t b_false = FALSE;
+ DBusMessageIter iter, sub;
+ DBusConnection *bus;
+
+ dbus_error_init(&error);
+
+ if (!(rl = action_to_runlevel()))
+ return 0;
+
+ if (utmp_get_runlevel(&previous, NULL) < 0)
+ previous = 'N';
+
+ if (!(bus = dbus_connection_open("unix:abstract=/com/ubuntu/upstart", &error))) {
+ if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) {
+ r = 0;
+ goto finish;
+ }
+
+ log_error("Failed to connect to Upstart bus: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ if ((r = bus_check_peercred(bus)) < 0) {
+ log_error("Failed to verify owner of bus.");
+ goto finish;
+ }
+
+ if (!(m = dbus_message_new_method_call(
+ "com.ubuntu.Upstart",
+ "/com/ubuntu/Upstart",
+ "com.ubuntu.Upstart0_6",
+ "EmitEvent"))) {
+
+ log_error("Could not allocate message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ dbus_message_iter_init_append(m, &iter);
+
+ env1_buf[sizeof(env1_buf)-2] = rl;
+ env2_buf[sizeof(env2_buf)-2] = previous;
+
+ if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &emit) ||
+ !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub) ||
+ !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env1) ||
+ !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env2) ||
+ !dbus_message_iter_close_container(&iter, &sub) ||
+ !dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b_false)) {
+ log_error("Could not append arguments to message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+
+ if (error_is_no_service(&error)) {
+ r = 0;
+ goto finish;
+ }
+
+ log_error("Failed to issue method call: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ r = 1;
+
+finish:
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ if (bus)
+ dbus_connection_unref(bus);
+
+ dbus_error_free(&error);
+
+ return r;
}
static int talk_initctl(void) {
- log_error("Talking initctl");
- return 0;
+ struct init_request request;
+ int r, fd;
+ char rl;
+
+ if (!(rl = action_to_runlevel()))
+ return 0;
+
+ zero(request);
+ request.magic = INIT_MAGIC;
+ request.sleeptime = 0;
+ request.cmd = INIT_CMD_RUNLVL;
+ request.runlevel = rl;
+
+ if ((fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY)) < 0) {
+
+ if (errno == ENOENT)
+ return 0;
+
+ log_error("Failed to open "INIT_FIFO": %m");
+ return -errno;
+ }
+
+ errno = 0;
+ r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
+ close_nointr_nofail(fd);
+
+ if (r < 0) {
+ log_error("Failed to write to "INIT_FIFO": %m");
+ return errno ? -errno : -EIO;
+ }
+
+ return 1;
}
static int systemctl_main(DBusConnection *bus, int argc, char *argv[]) {
{ "show-environment", EQUAL, 1, show_enviroment },
{ "set-environment", MORE, 2, set_environment },
{ "unset-environment", MORE, 2, set_environment },
+ { "halt", EQUAL, 1, start_special },
+ { "poweroff", EQUAL, 1, start_special },
+ { "reboot", EQUAL, 1, start_special },
+ { "default", EQUAL, 1, start_special },
+ { "rescue", EQUAL, 1, start_special },
+ { "emergency", EQUAL, 1, start_special },
};
int left;
static int start_with_fallback(DBusConnection *bus) {
int r;
+ warn_wall(arg_action);
+
if (bus) {
/* First, try systemd via D-Bus. */
if ((r = start_unit(bus, NULL, 0)) > 0)
/* Hmm, talking to systemd via D-Bus didn't work. Then
* let's try to talk to Upstart via D-Bus. */
- if ((r = talk_upstart(bus)) > 0)
+ if ((r = talk_upstart()) > 0)
return 0;
}
/* Nothing else worked, so let's try
* /dev/initctl */
- return talk_initctl();
+ if ((r = talk_initctl()) != 0)
+ return 0;
+
+ log_error("Failed to talk to init daemon.");
+ return -EIO;
}
static int halt_main(DBusConnection *bus) {
goto finish;
}
- if ((bus = dbus_bus_get(arg_session ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &error)))
+ /* If we are root, then let's not go via the bus */
+ if (geteuid() == 0 && !arg_session) {
+ bus = dbus_connection_open("unix:abstract=/org/freedesktop/systemd1/private", &error);
+
+ if (bus && bus_check_peercred(bus) < 0) {
+ log_error("Failed to verify owner of bus.");
+ goto finish;
+ }
+ } else
+ bus = dbus_bus_get(arg_session ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &error);
+
+ if (bus)
dbus_connection_set_exit_on_disconnect(bus, FALSE);
switch (arg_action) {
retval = halt_main(bus) < 0;
break;
- case ACTION_RUNLEVEL1:
case ACTION_RUNLEVEL2:
case ACTION_RUNLEVEL3:
case ACTION_RUNLEVEL4:
case ACTION_RUNLEVEL5:
case ACTION_RESCUE:
+ case ACTION_EMERGENCY:
+ case ACTION_DEFAULT:
retval = start_with_fallback(bus) < 0;
break;
retval = reload_with_fallback(bus) < 0;
break;
+ case ACTION_INVALID:
+ case ACTION_RUNLEVEL:
default:
assert_not_reached("Unknown action");
}
~ianmdlvl / elogind.git / blobdiff