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systemctl.c
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systemctl.c
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/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
Copyright 2013 Marc-Antoine Perennou
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <linux/reboot.h>
#include <locale.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <sys/prctl.h>
#include <sys/reboot.h>
#include <sys/socket.h>
#include <unistd.h>
#include "sd-bus.h"
#include "sd-daemon.h"
#include "sd-login.h"
#include "alloc-util.h"
#include "bootspec.h"
#include "bus-common-errors.h"
#include "bus-error.h"
#include "bus-message.h"
#include "bus-unit-util.h"
#include "bus-util.h"
#include "cgroup-show.h"
#include "cgroup-util.h"
#include "copy.h"
#include "dropin.h"
#include "efivars.h"
#include "env-util.h"
#include "escape.h"
#include "exit-status.h"
#include "fd-util.h"
#include "fileio.h"
#include "format-util.h"
#include "fs-util.h"
#include "glob-util.h"
#include "hostname-util.h"
#include "initreq.h"
#include "install.h"
#include "io-util.h"
#include "list.h"
#include "locale-util.h"
#include "log.h"
#include "logs-show.h"
#include "macro.h"
#include "mkdir.h"
#include "pager.h"
#include "parse-util.h"
#include "path-lookup.h"
#include "path-util.h"
#include "process-util.h"
#include "rlimit-util.h"
#include "set.h"
#include "sigbus.h"
#include "signal-util.h"
#include "socket-util.h"
#include "spawn-ask-password-agent.h"
#include "spawn-polkit-agent.h"
#include "special.h"
#include "stat-util.h"
#include "strv.h"
#include "terminal-util.h"
#include "unit-name.h"
#include "user-util.h"
#include "util.h"
#include "utmp-wtmp.h"
#include "verbs.h"
#include "virt.h"
/* The init script exit status codes
0 program is running or service is OK
1 program is dead and /var/run pid file exists
2 program is dead and /var/lock lock file exists
3 program is not running
4 program or service status is unknown
5-99 reserved for future LSB use
100-149 reserved for distribution use
150-199 reserved for application use
200-254 reserved
*/
enum {
EXIT_PROGRAM_RUNNING_OR_SERVICE_OK = 0,
EXIT_PROGRAM_DEAD_AND_PID_EXISTS = 1,
EXIT_PROGRAM_DEAD_AND_LOCK_FILE_EXISTS = 2,
EXIT_PROGRAM_NOT_RUNNING = 3,
EXIT_PROGRAM_OR_SERVICES_STATUS_UNKNOWN = 4,
};
static char **arg_types = NULL;
static char **arg_states = NULL;
static char **arg_properties = NULL;
static bool arg_all = false;
static enum dependency {
DEPENDENCY_FORWARD,
DEPENDENCY_REVERSE,
DEPENDENCY_AFTER,
DEPENDENCY_BEFORE,
_DEPENDENCY_MAX
} arg_dependency = DEPENDENCY_FORWARD;
static const char *arg_job_mode = "replace";
static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
static bool arg_wait = false;
static bool arg_no_block = false;
static bool arg_no_legend = false;
static bool arg_no_pager = false;
static bool arg_no_wtmp = false;
static bool arg_no_sync = false;
static bool arg_no_wall = false;
static bool arg_no_reload = false;
static bool arg_value = false;
static bool arg_show_types = false;
static bool arg_ignore_inhibitors = false;
static bool arg_dry_run = false;
static bool arg_quiet = false;
static bool arg_full = false;
static bool arg_recursive = false;
static int arg_force = 0;
static bool arg_ask_password = false;
static bool arg_runtime = false;
static UnitFilePresetMode arg_preset_mode = UNIT_FILE_PRESET_FULL;
static char **arg_wall = NULL;
static const char *arg_kill_who = NULL;
static int arg_signal = SIGTERM;
static char *arg_root = NULL;
static usec_t arg_when = 0;
static char *arg_esp_path = NULL;
static char *argv_cmdline = NULL;
static enum action {
ACTION_SYSTEMCTL,
ACTION_HALT,
ACTION_POWEROFF,
ACTION_REBOOT,
ACTION_KEXEC,
ACTION_EXIT,
ACTION_SUSPEND,
ACTION_HIBERNATE,
ACTION_HYBRID_SLEEP,
ACTION_RUNLEVEL2,
ACTION_RUNLEVEL3,
ACTION_RUNLEVEL4,
ACTION_RUNLEVEL5,
ACTION_RESCUE,
ACTION_EMERGENCY,
ACTION_DEFAULT,
ACTION_RELOAD,
ACTION_REEXEC,
ACTION_RUNLEVEL,
ACTION_CANCEL_SHUTDOWN,
_ACTION_MAX,
_ACTION_INVALID = -1
} arg_action = ACTION_SYSTEMCTL;
static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
static const char *arg_host = NULL;
static unsigned arg_lines = 10;
static OutputMode arg_output = OUTPUT_SHORT;
static bool arg_plain = false;
static bool arg_firmware_setup = false;
static bool arg_now = false;
static bool arg_jobs_before = false;
static bool arg_jobs_after = false;
static int daemon_reload(int argc, char *argv[], void* userdata);
static int trivial_method(int argc, char *argv[], void *userdata);
static int halt_now(enum action a);
static int get_state_one_unit(sd_bus *bus, const char *name, UnitActiveState *active_state);
static bool original_stdout_is_tty;
typedef enum BusFocus {
BUS_FULL, /* The full bus indicated via --system or --user */
BUS_MANAGER, /* The manager itself, possibly directly, possibly via the bus */
_BUS_FOCUS_MAX
} BusFocus;
static sd_bus *busses[_BUS_FOCUS_MAX] = {};
static UnitFileFlags args_to_flags(void) {
return (arg_runtime ? UNIT_FILE_RUNTIME : 0) |
(arg_force ? UNIT_FILE_FORCE : 0);
}
static int acquire_bus(BusFocus focus, sd_bus **ret) {
int r;
assert(focus < _BUS_FOCUS_MAX);
assert(ret);
/* We only go directly to the manager, if we are using a local transport */
if (arg_transport != BUS_TRANSPORT_LOCAL)
focus = BUS_FULL;
if (getenv_bool("SYSTEMCTL_FORCE_BUS") > 0)
focus = BUS_FULL;
if (!busses[focus]) {
bool user;
user = arg_scope != UNIT_FILE_SYSTEM;
if (focus == BUS_MANAGER)
r = bus_connect_transport_systemd(arg_transport, arg_host, user, &busses[focus]);
else
r = bus_connect_transport(arg_transport, arg_host, user, &busses[focus]);
if (r < 0)
return log_error_errno(r, "Failed to connect to bus: %m");
(void) sd_bus_set_allow_interactive_authorization(busses[focus], arg_ask_password);
}
*ret = busses[focus];
return 0;
}
static void release_busses(void) {
BusFocus w;
for (w = 0; w < _BUS_FOCUS_MAX; w++)
busses[w] = sd_bus_flush_close_unref(busses[w]);
}
static int map_string_no_copy(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
char *s;
const char **p = userdata;
int r;
r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &s);
if (r < 0)
return r;
if (!isempty(s))
*p = s;
return 0;
}
static void ask_password_agent_open_if_enabled(void) {
/* Open the password agent as a child process if necessary */
if (arg_dry_run)
return;
if (!arg_ask_password)
return;
if (arg_scope != UNIT_FILE_SYSTEM)
return;
if (arg_transport != BUS_TRANSPORT_LOCAL)
return;
ask_password_agent_open();
}
static void polkit_agent_open_if_enabled(void) {
/* Open the polkit agent as a child process if necessary */
if (!arg_ask_password)
return;
if (arg_scope != UNIT_FILE_SYSTEM)
return;
if (arg_transport != BUS_TRANSPORT_LOCAL)
return;
polkit_agent_open();
}
static OutputFlags get_output_flags(void) {
return
arg_all * OUTPUT_SHOW_ALL |
arg_full * OUTPUT_FULL_WIDTH |
(!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
colors_enabled() * OUTPUT_COLOR |
!arg_quiet * OUTPUT_WARN_CUTOFF;
}
static int translate_bus_error_to_exit_status(int r, const sd_bus_error *error) {
assert(error);
if (!sd_bus_error_is_set(error))
return r;
if (sd_bus_error_has_name(error, SD_BUS_ERROR_ACCESS_DENIED) ||
sd_bus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
sd_bus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
sd_bus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
return EXIT_NOPERMISSION;
if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
return EXIT_NOTINSTALLED;
if (sd_bus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
sd_bus_error_has_name(error, SD_BUS_ERROR_NOT_SUPPORTED))
return EXIT_NOTIMPLEMENTED;
if (sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
return EXIT_NOTCONFIGURED;
if (r != 0)
return r;
return EXIT_FAILURE;
}
static bool install_client_side(void) {
/* Decides when to execute enable/disable/... operations
* client-side rather than server-side. */
if (running_in_chroot() > 0)
return true;
if (sd_booted() <= 0)
return true;
if (!isempty(arg_root))
return true;
if (arg_scope == UNIT_FILE_GLOBAL)
return true;
/* Unsupported environment variable, mostly for debugging purposes */
if (getenv_bool("SYSTEMCTL_INSTALL_CLIENT_SIDE") > 0)
return true;
return false;
}
static int compare_unit_info(const void *a, const void *b) {
const UnitInfo *u = a, *v = b;
const char *d1, *d2;
int r;
/* First, order by machine */
if (!u->machine && v->machine)
return -1;
if (u->machine && !v->machine)
return 1;
if (u->machine && v->machine) {
r = strcasecmp(u->machine, v->machine);
if (r != 0)
return r;
}
/* Second, order by unit type */
d1 = strrchr(u->id, '.');
d2 = strrchr(v->id, '.');
if (d1 && d2) {
r = strcasecmp(d1, d2);
if (r != 0)
return r;
}
/* Third, order by name */
return strcasecmp(u->id, v->id);
}
static const char* unit_type_suffix(const char *name) {
const char *dot;
dot = strrchr(name, '.');
if (!dot)
return "";
return dot + 1;
}
static bool output_show_unit(const UnitInfo *u, char **patterns) {
assert(u);
if (!strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE))
return false;
if (arg_types && !strv_find(arg_types, unit_type_suffix(u->id)))
return false;
if (arg_all)
return true;
/* Note that '--all' is not purely a state filter, but also a
* filter that hides units that "follow" other units (which is
* used for device units that appear under different names). */
if (!isempty(u->following))
return false;
if (!strv_isempty(arg_states))
return true;
/* By default show all units except the ones in inactive
* state and with no pending job */
if (u->job_id > 0)
return true;
if (streq(u->active_state, "inactive"))
return false;
return true;
}
static int output_units_list(const UnitInfo *unit_infos, unsigned c) {
unsigned circle_len = 0, id_len, max_id_len, load_len, active_len, sub_len, job_len, desc_len, max_desc_len;
const UnitInfo *u;
unsigned n_shown = 0;
int job_count = 0;
max_id_len = strlen("UNIT");
load_len = strlen("LOAD");
active_len = strlen("ACTIVE");
sub_len = strlen("SUB");
job_len = strlen("JOB");
max_desc_len = strlen("DESCRIPTION");
for (u = unit_infos; u < unit_infos + c; u++) {
max_id_len = MAX(max_id_len, strlen(u->id) + (u->machine ? strlen(u->machine)+1 : 0));
load_len = MAX(load_len, strlen(u->load_state));
active_len = MAX(active_len, strlen(u->active_state));
sub_len = MAX(sub_len, strlen(u->sub_state));
max_desc_len = MAX(max_desc_len, strlen(u->description));
if (u->job_id != 0) {
job_len = MAX(job_len, strlen(u->job_type));
job_count++;
}
if (!arg_no_legend &&
(streq(u->active_state, "failed") ||
STR_IN_SET(u->load_state, "error", "not-found", "masked")))
circle_len = 2;
}
if (!arg_full && original_stdout_is_tty) {
unsigned basic_len;
id_len = MIN(max_id_len, 25u); /* as much as it needs, but at most 25 for now */
basic_len = circle_len + 1 + id_len + 1 + load_len + 1 + active_len + 1 + sub_len + 1;
if (job_count)
basic_len += job_len + 1;
if (basic_len < (unsigned) columns()) {
unsigned extra_len, incr;
extra_len = columns() - basic_len;
/* Either UNIT already got 25, or is fully satisfied.
* Grant up to 25 to DESC now. */
incr = MIN(extra_len, 25u);
desc_len = incr;
extra_len -= incr;
/* Of the remainder give as much as the ID needs to the ID, and give the rest to the
* description but not more than it needs. */
if (extra_len > 0) {
incr = MIN(max_id_len - id_len, extra_len);
id_len += incr;
desc_len += MIN(extra_len - incr, max_desc_len - desc_len);
}
} else
desc_len = 0;
} else {
id_len = max_id_len;
desc_len = max_desc_len;
}
for (u = unit_infos; u < unit_infos + c; u++) {
_cleanup_free_ char *e = NULL, *j = NULL;
const char *on_underline = "", *off_underline = "";
const char *on_loaded = "", *off_loaded = "";
const char *on_active = "", *off_active = "";
const char *on_circle = "", *off_circle = "";
const char *id;
bool circle = false, underline = false;
if (!n_shown && !arg_no_legend) {
if (circle_len > 0)
fputs(" ", stdout);
printf("%s%-*s %-*s %-*s %-*s ",
ansi_underline(),
id_len, "UNIT",
load_len, "LOAD",
active_len, "ACTIVE",
sub_len, "SUB");
if (job_count)
printf("%-*s ", job_len, "JOB");
printf("%-*.*s%s\n",
desc_len,
!arg_full && arg_no_pager ? (int) desc_len : -1,
"DESCRIPTION",
ansi_normal());
}
n_shown++;
if (u + 1 < unit_infos + c &&
!streq(unit_type_suffix(u->id), unit_type_suffix((u + 1)->id))) {
on_underline = ansi_underline();
off_underline = ansi_normal();
underline = true;
}
if (STR_IN_SET(u->load_state, "error", "not-found", "masked") && !arg_plain) {
on_circle = ansi_highlight_yellow();
off_circle = ansi_normal();
circle = true;
on_loaded = underline ? ansi_highlight_red_underline() : ansi_highlight_red();
off_loaded = underline ? on_underline : ansi_normal();
} else if (streq(u->active_state, "failed") && !arg_plain) {
on_circle = ansi_highlight_red();
off_circle = ansi_normal();
circle = true;
on_active = underline ? ansi_highlight_red_underline() : ansi_highlight_red();
off_active = underline ? on_underline : ansi_normal();
}
if (u->machine) {
j = strjoin(u->machine, ":", u->id);
if (!j)
return log_oom();
id = j;
} else
id = u->id;
if (arg_full) {
e = ellipsize(id, id_len, 33);
if (!e)
return log_oom();
id = e;
}
if (circle_len > 0)
printf("%s%s%s ", on_circle, circle ? special_glyph(BLACK_CIRCLE) : " ", off_circle);
printf("%s%s%-*s%s %s%-*s%s %s%-*s %-*s%s %-*s",
on_underline,
on_active, id_len, id, off_active,
on_loaded, load_len, u->load_state, off_loaded,
on_active, active_len, u->active_state,
sub_len, u->sub_state, off_active,
job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
printf("%-*.*s%s\n",
desc_len,
!arg_full && arg_no_pager ? (int) desc_len : -1,
u->description,
off_underline);
}
if (!arg_no_legend) {
const char *on, *off;
if (n_shown) {
puts("\n"
"LOAD = Reflects whether the unit definition was properly loaded.\n"
"ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
"SUB = The low-level unit activation state, values depend on unit type.");
puts(job_count ? "JOB = Pending job for the unit.\n" : "");
on = ansi_highlight();
off = ansi_normal();
} else {
on = ansi_highlight_red();
off = ansi_normal();
}
if (arg_all)
printf("%s%u loaded units listed.%s\n"
"To show all installed unit files use 'systemctl list-unit-files'.\n",
on, n_shown, off);
else
printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
"To show all installed unit files use 'systemctl list-unit-files'.\n",
on, n_shown, off);
}
return 0;
}
static int get_unit_list(
sd_bus *bus,
const char *machine,
char **patterns,
UnitInfo **unit_infos,
int c,
sd_bus_message **_reply) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
size_t size = c;
int r;
UnitInfo u;
bool fallback = false;
assert(bus);
assert(unit_infos);
assert(_reply);
r = sd_bus_message_new_method_call(
bus,
&m,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ListUnitsByPatterns");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_strv(m, arg_states);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_strv(m, patterns);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_call(bus, m, 0, &error, &reply);
if (r < 0 && (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD) ||
sd_bus_error_has_name(&error, SD_BUS_ERROR_ACCESS_DENIED))) {
/* Fallback to legacy ListUnitsFiltered method */
fallback = true;
log_debug_errno(r, "Failed to list units: %s Falling back to ListUnitsFiltered method.", bus_error_message(&error, r));
m = sd_bus_message_unref(m);
sd_bus_error_free(&error);
r = sd_bus_message_new_method_call(
bus,
&m,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ListUnitsFiltered");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_strv(m, arg_states);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_call(bus, m, 0, &error, &reply);
}
if (r < 0)
return log_error_errno(r, "Failed to list units: %s", bus_error_message(&error, r));
r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = bus_parse_unit_info(reply, &u)) > 0) {
u.machine = machine;
if (!output_show_unit(&u, fallback ? patterns : NULL))
continue;
if (!GREEDY_REALLOC(*unit_infos, size, c+1))
return log_oom();
(*unit_infos)[c++] = u;
}
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);
*_reply = reply;
reply = NULL;
return c;
}
static void message_set_freep(Set **set) {
sd_bus_message *m;
while ((m = set_steal_first(*set)))
sd_bus_message_unref(m);
set_free(*set);
}
static int get_unit_list_recursive(
sd_bus *bus,
char **patterns,
UnitInfo **_unit_infos,
Set **_replies,
char ***_machines) {
_cleanup_free_ UnitInfo *unit_infos = NULL;
_cleanup_(message_set_freep) Set *replies;
sd_bus_message *reply;
int c, r;
assert(bus);
assert(_replies);
assert(_unit_infos);
assert(_machines);
replies = set_new(NULL);
if (!replies)
return log_oom();
c = get_unit_list(bus, NULL, patterns, &unit_infos, 0, &reply);
if (c < 0)
return c;
r = set_put(replies, reply);
if (r < 0) {
sd_bus_message_unref(reply);
return log_oom();
}
if (arg_recursive) {
_cleanup_strv_free_ char **machines = NULL;
char **i;
r = sd_get_machine_names(&machines);
if (r < 0)
return log_error_errno(r, "Failed to get machine names: %m");
STRV_FOREACH(i, machines) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *container = NULL;
int k;
r = sd_bus_open_system_machine(&container, *i);
if (r < 0) {
log_warning_errno(r, "Failed to connect to container %s, ignoring: %m", *i);
continue;
}
k = get_unit_list(container, *i, patterns, &unit_infos, c, &reply);
if (k < 0)
return k;
c = k;
r = set_put(replies, reply);
if (r < 0) {
sd_bus_message_unref(reply);
return log_oom();
}
}
*_machines = machines;
machines = NULL;
} else
*_machines = NULL;
*_unit_infos = unit_infos;
unit_infos = NULL;
*_replies = replies;
replies = NULL;
return c;
}
static int list_units(int argc, char *argv[], void *userdata) {
_cleanup_free_ UnitInfo *unit_infos = NULL;
_cleanup_(message_set_freep) Set *replies = NULL;
_cleanup_strv_free_ char **machines = NULL;
sd_bus *bus;
int r;
r = acquire_bus(BUS_MANAGER, &bus);
if (r < 0)
return r;
pager_open(arg_no_pager, false);
r = get_unit_list_recursive(bus, strv_skip(argv, 1), &unit_infos, &replies, &machines);
if (r < 0)
return r;
qsort_safe(unit_infos, r, sizeof(UnitInfo), compare_unit_info);
return output_units_list(unit_infos, r);
}
static int get_triggered_units(
sd_bus *bus,
const char* path,
char*** ret) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
int r;
assert(bus);
assert(path);
assert(ret);
r = sd_bus_get_property_strv(
bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.systemd1.Unit",
"Triggers",
&error,
ret);
if (r < 0)
return log_error_errno(r, "Failed to determine triggers: %s", bus_error_message(&error, r));
return 0;
}
static int get_listening(
sd_bus *bus,
const char* unit_path,
char*** listening) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
const char *type, *path;
int r, n = 0;
r = sd_bus_get_property(
bus,
"org.freedesktop.systemd1",
unit_path,
"org.freedesktop.systemd1.Socket",
"Listen",
&error,
&reply,
"a(ss)");
if (r < 0)
return log_error_errno(r, "Failed to get list of listening sockets: %s", bus_error_message(&error, r));
r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_read(reply, "(ss)", &type, &path)) > 0) {
r = strv_extend(listening, type);
if (r < 0)
return log_oom();
r = strv_extend(listening, path);
if (r < 0)
return log_oom();
n++;
}
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);
return n;
}
struct socket_info {
const char *machine;
const char* id;
char* type;
char* path;
/* Note: triggered is a list here, although it almost certainly
* will always be one unit. Nevertheless, dbus API allows for multiple
* values, so let's follow that. */
char** triggered;
/* The strv above is shared. free is set only in the first one. */
bool own_triggered;
};
static int socket_info_compare(const struct socket_info *a, const struct socket_info *b) {
int o;
assert(a);
assert(b);
if (!a->machine && b->machine)
return -1;
if (a->machine && !b->machine)
return 1;
if (a->machine && b->machine) {
o = strcasecmp(a->machine, b->machine);
if (o != 0)
return o;
}
o = strcmp(a->path, b->path);
if (o == 0)
o = strcmp(a->type, b->type);
return o;
}
static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
struct socket_info *s;
unsigned pathlen = strlen("LISTEN"),
typelen = strlen("TYPE") * arg_show_types,
socklen = strlen("UNIT"),
servlen = strlen("ACTIVATES");
const char *on, *off;
for (s = socket_infos; s < socket_infos + cs; s++) {
unsigned tmp = 0;
char **a;
socklen = MAX(socklen, strlen(s->id));
if (arg_show_types)
typelen = MAX(typelen, strlen(s->type));
pathlen = MAX(pathlen, strlen(s->path) + (s->machine ? strlen(s->machine)+1 : 0));
STRV_FOREACH(a, s->triggered)
tmp += strlen(*a) + 2*(a != s->triggered);
servlen = MAX(servlen, tmp);
}
if (cs) {
if (!arg_no_legend)
printf("%-*s %-*.*s%-*s %s\n",
pathlen, "LISTEN",
typelen + arg_show_types, typelen + arg_show_types, "TYPE ",
socklen, "UNIT",
"ACTIVATES");
for (s = socket_infos; s < socket_infos + cs; s++) {
_cleanup_free_ char *j = NULL;
const char *path;
char **a;
if (s->machine) {
j = strjoin(s->machine, ":", s->path);
if (!j)
return log_oom();
path = j;
} else
path = s->path;
if (arg_show_types)
printf("%-*s %-*s %-*s",
pathlen, path, typelen, s->type, socklen, s->id);
else
printf("%-*s %-*s",
pathlen, path, socklen, s->id);
STRV_FOREACH(a, s->triggered)
printf("%s %s",
a == s->triggered ? "" : ",", *a);
printf("\n");
}
on = ansi_highlight();
off = ansi_normal();
if (!arg_no_legend)
printf("\n");
} else {
on = ansi_highlight_red();
off = ansi_normal();
}
if (!arg_no_legend) {
printf("%s%u sockets listed.%s\n", on, cs, off);
if (!arg_all)
printf("Pass --all to see loaded but inactive sockets, too.\n");
}
return 0;
}
static int list_sockets(int argc, char *argv[], void *userdata) {
_cleanup_(message_set_freep) Set *replies = NULL;
_cleanup_strv_free_ char **machines = NULL;
_cleanup_free_ UnitInfo *unit_infos = NULL;
_cleanup_free_ struct socket_info *socket_infos = NULL;
const UnitInfo *u;
struct socket_info *s;
unsigned cs = 0;