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systemd / systemd / 20561496515

28 Dec 2025 11:55AM UTC coverage: 72.478% (-0.2%) from 72.692%
20561496515

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web-flow
core: several follow-ups for BindNetworkInterface= (#40202)

13 of 54 new or added lines in 5 files covered. (24.07%)

1051 existing lines in 43 files now uncovered.

309149 of 426542 relevant lines covered (72.48%)

1254687.42 hits per line

Source File
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81.19
/src/systemctl/systemctl-start-unit.c
1
/* SPDX-License-Identifier: LGPL-2.1-or-later */
2

3
#include "sd-bus.h"
4

5
#include "alloc-util.h"
6
#include "ansi-color.h"
7
#include "bus-common-errors.h"
8
#include "bus-error.h"
9
#include "bus-locator.h"
10
#include "bus-util.h"
11
#include "bus-wait-for-jobs.h"
12
#include "bus-wait-for-units.h"
13
#include "fork-notify.h"
14
#include "pidref.h"
15
#include "runtime-scope.h"
16
#include "special.h"
17
#include "string-util.h"
18
#include "strv.h"
19
#include "systemctl.h"
20
#include "systemctl-start-unit.h"
21
#include "systemctl-util.h"
22

23
static const struct {
24
        const char *verb;      /* systemctl verb */
25
        const char *method;    /* Name of the specific D-Bus method */
26
        const char *job_type;  /* Job type when passing to the generic EnqueueUnitJob() method */
27
} unit_actions[] = {
28
        { "start",                 "StartUnit",              "start"                 },
29
        { "stop",                  "StopUnit",               "stop"                  },
30
        { "condstop",              "StopUnit",               "stop"                  }, /* legacy alias */
31
        { "reload",                "ReloadUnit",             "reload"                },
32
        { "restart",               "RestartUnit",            "restart"               },
33
        { "try-restart",           "TryRestartUnit",         "try-restart"           },
34
        { "condrestart",           "TryRestartUnit",         "try-restart"           }, /* legacy alias */
35
        { "reload-or-restart",     "ReloadOrRestartUnit",    "reload-or-restart"     },
36
        { "try-reload-or-restart", "ReloadOrTryRestartUnit", "reload-or-try-restart" },
37
        { "reload-or-try-restart", "ReloadOrTryRestartUnit", "reload-or-try-restart" }, /* legacy alias */
38
        { "condreload",            "ReloadOrTryRestartUnit", "reload-or-try-restart" }, /* legacy alias */
39
        { "force-reload",          "ReloadOrTryRestartUnit", "reload-or-try-restart" }, /* legacy alias */
40
};
41

42
static const char* verb_to_method(const char *verb) {
3,036✔
43
        assert(verb);
3,036✔
44

45
        FOREACH_ELEMENT(i, unit_actions)
6,936✔
46
                if (streq(i->verb, verb))
6,936✔
47
                        return i->method;
3,036✔
48

49
        return "StartUnit";
50
}
51

52
static const char* verb_to_job_type(const char *verb) {
3,036✔
53
        assert(verb);
3,036✔
54

55
        FOREACH_ELEMENT(i, unit_actions)
6,936✔
56
                if (streq(i->verb, verb))
6,936✔
57
                        return i->job_type;
3,036✔
58

59
        return "start";
60
}
61

62
static int start_unit_one(
3,109✔
63
                sd_bus *bus,
64
                const char *method,    /* When using classic per-job bus methods */
65
                const char *job_type,  /* When using new-style EnqueueUnitJob() */
66
                const char *name,
67
                const char *mode,
68
                sd_bus_error *error,
69
                BusWaitForJobs *w,
70
                BusWaitForUnits *wu) {
71

72
        _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3,109✔
73
        const char *path;
3,109✔
74
        bool done = false;
3,109✔
75
        int r;
3,109✔
76

77
        assert(method);
3,109✔
78
        assert(name);
3,109✔
79
        assert(mode);
3,109✔
80
        assert(error);
3,109✔
81

82
        log_debug("%s dbus call org.freedesktop.systemd1.Manager %s(%s, %s)",
3,199✔
83
                  arg_dry_run ? "Would execute" : "Executing",
84
                  method, name, mode);
85

86
        if (arg_dry_run)
3,109✔
87
                return 0;
88

89
        if (arg_show_transaction) {
3,105✔
90
                _cleanup_(sd_bus_error_free) sd_bus_error enqueue_error = SD_BUS_ERROR_NULL;
10✔
91

92
                /* Use the new, fancy EnqueueUnitJob() API if the user wants us to print the transaction */
93
                r = bus_call_method(
10✔
94
                                bus,
95
                                bus_systemd_mgr,
96
                                "EnqueueUnitJob",
97
                                &enqueue_error,
98
                                &reply,
99
                                "sss",
100
                                name, job_type, mode);
101
                if (r < 0) {
10✔
102
                        if (!sd_bus_error_has_name(&enqueue_error, SD_BUS_ERROR_UNKNOWN_METHOD)) {
×
103
                                (void) sd_bus_error_move(error, &enqueue_error);
×
104
                                goto fail;
×
105
                        }
106

107
                        /* Hmm, the API is not yet available. Let's use the classic API instead (see below). */
108
                        log_notice("--show-transaction not supported by this service manager, proceeding without.");
×
109
                } else {
110
                        const char *u, *jt;
10✔
111
                        uint32_t id;
10✔
112

113
                        r = sd_bus_message_read(reply, "uosos", &id, &path, &u, NULL, &jt);
10✔
114
                        if (r < 0)
10✔
115
                                return bus_log_parse_error(r);
×
116

117
                        log_info("Enqueued anchor job %" PRIu32 " %s/%s.", id, u, jt);
10✔
118

119
                        r = sd_bus_message_enter_container(reply, 'a', "(uosos)");
10✔
120
                        if (r < 0)
10✔
121
                                return bus_log_parse_error(r);
×
122
                        for (;;) {
13✔
123
                                r = sd_bus_message_read(reply, "(uosos)", &id, NULL, &u, NULL, &jt);
13✔
124
                                if (r < 0)
13✔
125
                                        return bus_log_parse_error(r);
×
126
                                if (r == 0)
13✔
127
                                        break;
128

129
                                log_info("Enqueued auxiliary job %" PRIu32 " %s/%s.", id, u, jt);
3✔
130
                        }
131

132
                        r = sd_bus_message_exit_container(reply);
10✔
133
                        if (r < 0)
10✔
134
                                return bus_log_parse_error(r);
×
135

136
                        done = true;
10✔
137
                }
138
        }
139

140
        if (!done) {
10✔
141
                r = bus_call_method(bus, bus_systemd_mgr, method, error, &reply, "ss", name, mode);
3,095✔
142
                if (r < 0)
3,095✔
143
                        goto fail;
67✔
144

145
                r = sd_bus_message_read(reply, "o", &path);
3,028✔
146
                if (r < 0)
3,028✔
147
                        return bus_log_parse_error(r);
×
148
        }
149

150
        if (need_daemon_reload(bus, name) > 0)
3,038✔
UNCOV
151
                warn_unit_file_changed(name);
×
152

153
        if (w) {
3,038✔
154
                log_debug("Adding %s to the set", path);
2,937✔
155
                r = bus_wait_for_jobs_add(w, path);
2,937✔
156
                if (r < 0)
2,937✔
157
                        return log_error_errno(r, "Failed to watch job for %s: %m", name);
×
158
        }
159

160
        if (wu) {
3,038✔
161
                r = bus_wait_for_units_add_unit(wu, name, BUS_WAIT_FOR_INACTIVE|BUS_WAIT_NO_JOB, NULL, NULL);
14✔
162
                if (r < 0)
14✔
163
                        return log_error_errno(r, "Failed to watch unit %s: %m", name);
×
164
        }
165

166
        return 0;
167

168
fail:
67✔
169
        /* There's always a fallback possible for legacy actions. */
170
        if (arg_action != ACTION_SYSTEMCTL)
67✔
171
                return r;
172

173
        if (sd_bus_error_has_name(error, BUS_ERROR_UNIT_MASKED) &&
67✔
174
            STR_IN_SET(method, "TryRestartUnit", "ReloadOrTryRestartUnit")) {
×
175
                /* Ignore masked unit if try-* is requested */
176

177
                log_debug_errno(r, "Failed to %s %s, ignoring: %s", job_type, name, bus_error_message(error, r));
×
178
                return 0;
×
179
        }
180

181
        log_error_errno(r, "Failed to %s %s: %s", job_type, name, bus_error_message(error, r));
67✔
182

183
        if (!sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
67✔
184
                                           BUS_ERROR_UNIT_MASKED,
185
                                           BUS_ERROR_JOB_TYPE_NOT_APPLICABLE))
186
                log_error("See %s logs and 'systemctl%s status%s %s' for details.",
62✔
187
                          runtime_scope_to_string(arg_runtime_scope),
188
                          arg_runtime_scope == RUNTIME_SCOPE_SYSTEM ? "" : " --user",
189
                          name[0] == '-' ? " --" : "",
190
                          name);
191

192
        return r;
193
}
194

195
static int enqueue_marked_jobs(
1✔
196
                sd_bus *bus,
197
                BusWaitForJobs *w) {
198

199
        _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1✔
200
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1✔
201
        int r;
1✔
202

203
        log_debug("%s dbus call org.freedesktop.systemd1.Manager EnqueueMarkedJobs()",
1✔
204
                  arg_dry_run ? "Would execute" : "Executing");
205

206
        if (arg_dry_run)
1✔
207
                return 0;
208

209
        r = bus_call_method(bus, bus_systemd_mgr, "EnqueueMarkedJobs", &error, &reply, NULL);
1✔
210
        if (r < 0)
1✔
211
                return log_error_errno(r, "Failed to start jobs: %s", bus_error_message(&error, r));
×
212

213
        _cleanup_strv_free_ char **paths = NULL;
1✔
214
        r = sd_bus_message_read_strv(reply, &paths);
1✔
215
        if (r < 0)
1✔
216
                return bus_log_parse_error(r);
×
217

218
        if (w)
1✔
219
                STRV_FOREACH(path, paths) {
2✔
220
                        log_debug("Adding %s to the set", *path);
1✔
221
                        r = bus_wait_for_jobs_add(w, *path);
1✔
222
                        if (r < 0)
1✔
223
                                return log_error_errno(r, "Failed to watch job %s: %m", *path);
×
224
                }
225

226
        return 0;
227
}
228

229
const struct action_metadata action_table[_ACTION_MAX] = {
230
        [ACTION_HALT]                   = { SPECIAL_HALT_TARGET,                   "halt",                   "replace-irreversibly" },
231
        [ACTION_POWEROFF]               = { SPECIAL_POWEROFF_TARGET,               "poweroff",               "replace-irreversibly" },
232
        [ACTION_REBOOT]                 = { SPECIAL_REBOOT_TARGET,                 "reboot",                 "replace-irreversibly" },
233
        [ACTION_KEXEC]                  = { SPECIAL_KEXEC_TARGET,                  "kexec",                  "replace-irreversibly" },
234
        [ACTION_SOFT_REBOOT]            = { SPECIAL_SOFT_REBOOT_TARGET,            "soft-reboot",            "replace-irreversibly" },
235
        [ACTION_RESCUE]                 = { SPECIAL_RESCUE_TARGET,                 "rescue",                 "isolate"              },
236
        [ACTION_EMERGENCY]              = { SPECIAL_EMERGENCY_TARGET,              "emergency",              "isolate"              },
237
        [ACTION_DEFAULT]                = { SPECIAL_DEFAULT_TARGET,                "default",                "isolate"              },
238
        [ACTION_EXIT]                   = { SPECIAL_EXIT_TARGET,                   "exit",                   "replace-irreversibly" },
239
        [ACTION_SUSPEND]                = { SPECIAL_SUSPEND_TARGET,                "suspend",                "replace-irreversibly" },
240
        [ACTION_HIBERNATE]              = { SPECIAL_HIBERNATE_TARGET,              "hibernate",              "replace-irreversibly" },
241
        [ACTION_HYBRID_SLEEP]           = { SPECIAL_HYBRID_SLEEP_TARGET,           "hybrid-sleep",           "replace-irreversibly" },
242
        [ACTION_SUSPEND_THEN_HIBERNATE] = { SPECIAL_SUSPEND_THEN_HIBERNATE_TARGET, "suspend-then-hibernate", "replace-irreversibly" },
243
        [ACTION_SLEEP]                  = { NULL, /* handled only by logind */     "sleep",                  NULL                   },
244
};
245

246
enum action verb_to_action(const char *verb) {
3,081✔
247
        assert(verb);
3,081✔
248

249
        for (enum action i = 0; i < _ACTION_MAX; i++)
64,038✔
250
                if (streq_ptr(action_table[i].verb, verb))
61,001✔
251
                        return i;
252

253
        return _ACTION_INVALID;
254
}
255

256
static const char** make_extra_args(const char *extra_args[static 4]) {
2,939✔
257
        size_t n = 0;
2,939✔
258

259
        assert(extra_args);
2,939✔
260

261
        if (arg_runtime_scope != RUNTIME_SCOPE_SYSTEM)
2,939✔
262
                extra_args[n++] = "--user";
17✔
263

264
        switch (arg_transport) {
2,939✔
265

266
        case BUS_TRANSPORT_REMOTE:
×
267
                extra_args[n++] = "-H";
×
268
                extra_args[n++] = arg_host;
×
269
                break;
×
270

271
        case BUS_TRANSPORT_MACHINE:
6✔
272
                extra_args[n++] = "-M";
6✔
273
                extra_args[n++] = arg_host;
6✔
274
                break;
6✔
275

276
        case BUS_TRANSPORT_CAPSULE:
1✔
277
                extra_args[n++] = "-C";
1✔
278
                extra_args[n++] = arg_host;
1✔
279
                break;
1✔
280

281
        case BUS_TRANSPORT_LOCAL:
282
                break;
283

284
        default:
×
285
                assert_not_reached();
×
286
        }
287

288
        extra_args[n] = NULL;
2,939✔
289
        return extra_args;
2,939✔
290
}
291

292
int verb_start(int argc, char *argv[], void *userdata) {
3,042✔
293
        _cleanup_(bus_wait_for_units_freep) BusWaitForUnits *wu = NULL;
3,042✔
294
        _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
×
295
        const char *method, *job_type, *mode, *one_name, *suffix = NULL;
3,042✔
296
        _cleanup_free_ char **stopped_units = NULL; /* Do not use _cleanup_strv_free_ */
3,042✔
297
        _cleanup_strv_free_ char **names = NULL;
3,042✔
298
        int r, ret = EXIT_SUCCESS;
3,042✔
299
        sd_bus *bus;
3,042✔
300

301
        if (arg_wait && !STR_IN_SET(argv[0], "start", "restart"))
3,042✔
302
                return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
×
303
                                       "--wait may only be used with the 'start' or 'restart' commands.");
304

305
        /* We cannot do sender tracking on the private bus, so we need the full one for RefUnit to implement
306
         * --wait */
307
        r = acquire_bus(arg_wait ? BUS_FULL : BUS_MANAGER, &bus);
3,042✔
308
        if (r < 0)
3,042✔
309
                return r;
310

311
        ask_password_agent_open_maybe();
3,042✔
312
        polkit_agent_open_maybe();
3,042✔
313

314
        if (arg_action == ACTION_SYSTEMCTL) {
3,042✔
315
                enum action action;
3,042✔
316

317
                action = verb_to_action(argv[0]);
3,042✔
318

319
                assert(action != ACTION_SLEEP);
3,042✔
320

321
                if (action != _ACTION_INVALID) {
3,042✔
322
                        /* A command in style "systemctl reboot", "systemctl poweroff", … */
323
                        method = "StartUnit";
5✔
324
                        job_type = "start";
5✔
325
                        mode = action_table[action].mode;
5✔
326
                        one_name = action_table[action].target;
5✔
327
                } else {
328
                        if (streq(argv[0], "isolate")) {
3,037✔
329
                                /* A "systemctl isolate <unit1> <unit2> …" command */
330
                                method = "StartUnit";
331
                                job_type = "start";
332
                                mode = "isolate";
333
                                suffix = ".target";
334
                        } else if (!arg_marked) {
3,037✔
335
                                /* A command in style of "systemctl start <unit1> <unit2> …", "systemctl stop <unit1> <unit2> …" and so on */
336
                                method = verb_to_method(argv[0]);
3,036✔
337
                                job_type = verb_to_job_type(argv[0]);
3,036✔
338
                                mode = arg_job_mode();
3,036✔
339
                        } else
340
                                method = job_type = mode = NULL;
341

342
                        one_name = NULL;
343
                }
344
        } else {
345
                /* A SysV legacy command such as "halt", "reboot", "poweroff", … */
346
                assert(arg_action >= 0 && arg_action < _ACTION_MAX);
×
347
                assert(action_table[arg_action].target);
×
348
                assert(action_table[arg_action].mode);
×
349

350
                method = "StartUnit";
351
                job_type = "start";
352
                mode = action_table[arg_action].mode;
353
                one_name = action_table[arg_action].target;
354
        }
355

356
        if (one_name) {
5✔
357
                names = strv_new(one_name);
5✔
358
                if (!names)
5✔
359
                        return log_oom();
×
360
        } else if (!arg_marked) {
3,037✔
361
                bool expanded;
3,036✔
362

363
                r = expand_unit_names(bus, strv_skip(argv, 1), suffix, &names, &expanded);
3,036✔
364
                if (r < 0)
3,036✔
365
                        return log_error_errno(r, "Failed to expand names: %m");
×
366

367
                if (!arg_all && expanded && streq(job_type, "start") && !arg_quiet) {
3,036✔
368
                        log_warning("Warning: %ssystemctl start called with a glob pattern.%s",
×
369
                                    ansi_highlight_red(),
370
                                    ansi_normal());
371
                        log_notice("Hint: unit globs expand to loaded units, so start will usually have no effect.\n"
×
372
                                   "      Passing --all will also load units which are pulled in by other units.\n"
373
                                   "      See systemctl(1) for more details.");
374
                }
375
        }
376

377
        if (!arg_no_block) {
3,042✔
378
                r = bus_wait_for_jobs_new(bus, &w);
2,939✔
379
                if (r < 0)
2,939✔
380
                        return log_error_errno(r, "Could not watch jobs: %m");
×
381
        }
382

383
        if (arg_wait) {
3,042✔
384
                r = bus_wait_for_units_new(bus, &wu);
13✔
385
                if (r < 0)
13✔
386
                        return log_error_errno(r, "Failed to allocate unit watch context: %m");
×
387
        }
388

389
        _cleanup_(fork_notify_terminate) PidRef journal_pid = PIDREF_NULL;
3,042✔
390
        if (arg_marked)
3,042✔
391
                ret = enqueue_marked_jobs(bus, w);
1✔
392
        else {
393
                if (arg_verbose)
3,041✔
394
                        (void) journal_fork(arg_runtime_scope, names, &journal_pid);
×
395

396
                STRV_FOREACH(name, names) {
6,150✔
397
                        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
3,109✔
398

399
                        r = start_unit_one(bus, method, job_type, *name, mode, &error, w, wu);
3,109✔
400
                        if (ret == EXIT_SUCCESS && r < 0)
3,109✔
401
                                ret = translate_bus_error_to_exit_status(r, &error);
67✔
402

403
                        if (r >= 0 && streq(method, "StopUnit")) {
3,109✔
404
                                r = strv_push(&stopped_units, *name);
1,907✔
405
                                if (r < 0)
1,907✔
406
                                        return log_oom();
×
407
                        }
408
                }
409
        }
410

411
        if (!arg_no_block) {
3,042✔
412
                const char *extra_args[4];
2,939✔
413
                WaitJobsFlags flags = 0;
2,939✔
414

415
                SET_FLAG(flags, BUS_WAIT_JOBS_LOG_ERROR, !arg_quiet);
2,939✔
416
                SET_FLAG(flags, BUS_WAIT_JOBS_LOG_SUCCESS, arg_show_transaction);
2,939✔
417
                r = bus_wait_for_jobs(w, flags, make_extra_args(extra_args));
2,939✔
418
                if (r < 0)
2,939✔
419
                        return r;
18✔
420

421
                /* When stopping units, warn if they can still be triggered by
422
                 * another active unit (socket, path, timer) */
423
                if (!arg_quiet && !arg_no_warn)
2,921✔
424
                        STRV_FOREACH(unit, stopped_units)
4,819✔
425
                                warn_triggering_units(bus, *unit, "Stopping", /* ignore_masked= */ true);
1,899✔
426
        }
427

428
        if (arg_wait) {
3,024✔
429
                r = bus_wait_for_units_run(wu);
13✔
430
                if (r < 0)
13✔
431
                        return log_error_errno(r, "Failed to wait for units: %m");
×
432
                if (r == BUS_WAIT_FAILURE && ret == EXIT_SUCCESS)
13✔
433
                        ret = EXIT_FAILURE;
1✔
434
        }
435

436
        return ret;
437
}
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