1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
|
/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
Copyright 2011 Lennart Poettering
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 <string.h>
#include <sys/utsname.h>
#include <unistd.h>
#include "alloc-util.h"
#include "bus-util.h"
#include "def.h"
#include "env-util.h"
#include "fileio-label.h"
#include "hostname-util.h"
#include "parse-util.h"
#include "path-util.h"
#include "selinux-util.h"
#include "strv.h"
#include "user-util.h"
#include "util.h"
#include "virt.h"
#define VALID_DEPLOYMENT_CHARS (DIGITS LETTERS "-.:")
enum {
PROP_HOSTNAME,
PROP_STATIC_HOSTNAME,
PROP_PRETTY_HOSTNAME,
PROP_ICON_NAME,
PROP_CHASSIS,
PROP_DEPLOYMENT,
PROP_LOCATION,
PROP_KERNEL_NAME,
PROP_KERNEL_RELEASE,
PROP_KERNEL_VERSION,
PROP_OS_PRETTY_NAME,
PROP_OS_CPE_NAME,
_PROP_MAX
};
typedef struct Context {
char *data[_PROP_MAX];
Hashmap *polkit_registry;
} Context;
static void context_reset(Context *c) {
int p;
assert(c);
for (p = 0; p < _PROP_MAX; p++)
c->data[p] = mfree(c->data[p]);
}
static void context_free(Context *c) {
assert(c);
context_reset(c);
bus_verify_polkit_async_registry_free(c->polkit_registry);
}
static int context_read_data(Context *c) {
int r;
struct utsname u;
assert(c);
context_reset(c);
assert_se(uname(&u) >= 0);
c->data[PROP_KERNEL_NAME] = strdup(u.sysname);
c->data[PROP_KERNEL_RELEASE] = strdup(u.release);
c->data[PROP_KERNEL_VERSION] = strdup(u.version);
if (!c->data[PROP_KERNEL_NAME] || !c->data[PROP_KERNEL_RELEASE] ||
!c->data[PROP_KERNEL_VERSION])
return -ENOMEM;
c->data[PROP_HOSTNAME] = gethostname_malloc();
if (!c->data[PROP_HOSTNAME])
return -ENOMEM;
r = read_etc_hostname(NULL, &c->data[PROP_STATIC_HOSTNAME]);
if (r < 0 && r != -ENOENT)
return r;
r = parse_env_file("/etc/machine-info", NEWLINE,
"PRETTY_HOSTNAME", &c->data[PROP_PRETTY_HOSTNAME],
"ICON_NAME", &c->data[PROP_ICON_NAME],
"CHASSIS", &c->data[PROP_CHASSIS],
"DEPLOYMENT", &c->data[PROP_DEPLOYMENT],
"LOCATION", &c->data[PROP_LOCATION],
NULL);
if (r < 0 && r != -ENOENT)
return r;
r = parse_env_file("/etc/os-release", NEWLINE,
"PRETTY_NAME", &c->data[PROP_OS_PRETTY_NAME],
"CPE_NAME", &c->data[PROP_OS_CPE_NAME],
NULL);
if (r == -ENOENT)
r = parse_env_file("/usr/lib/os-release", NEWLINE,
"PRETTY_NAME", &c->data[PROP_OS_PRETTY_NAME],
"CPE_NAME", &c->data[PROP_OS_CPE_NAME],
NULL);
if (r < 0 && r != -ENOENT)
return r;
return 0;
}
static bool valid_chassis(const char *chassis) {
assert(chassis);
return nulstr_contains(
"vm\0"
"container\0"
"desktop\0"
"laptop\0"
"convertible\0"
"server\0"
"tablet\0"
"handset\0"
"watch\0"
"embedded\0",
chassis);
}
static bool valid_deployment(const char *deployment) {
assert(deployment);
return in_charset(deployment, VALID_DEPLOYMENT_CHARS);
}
static const char* fallback_chassis(void) {
char *type;
unsigned t;
int v, r;
v = detect_virtualization();
if (VIRTUALIZATION_IS_VM(v))
return "vm";
if (VIRTUALIZATION_IS_CONTAINER(v))
return "container";
r = read_one_line_file("/sys/class/dmi/id/chassis_type", &type);
if (r < 0)
goto try_acpi;
r = safe_atou(type, &t);
free(type);
if (r < 0)
goto try_acpi;
/* We only list the really obvious cases here. The DMI data is unreliable enough, so let's not do any
additional guesswork on top of that.
See the SMBIOS Specification 3.0 section 7.4.1 for details about the values listed here:
https://www.dmtf.org/sites/default/files/standards/documents/DSP0134_3.0.0.pdf
*/
switch (t) {
case 0x3: /* Desktop */
case 0x4: /* Low Profile Desktop */
case 0x6: /* Mini Tower */
case 0x7: /* Tower */
return "desktop";
case 0x8: /* Portable */
case 0x9: /* Laptop */
case 0xA: /* Notebook */
case 0xE: /* Sub Notebook */
return "laptop";
case 0xB: /* Hand Held */
return "handset";
case 0x11: /* Main Server Chassis */
case 0x1C: /* Blade */
case 0x1D: /* Blade Enclosure */
return "server";
case 0x1E: /* Tablet */
return "tablet";
case 0x1F: /* Convertible */
case 0x20: /* Detachable */
return "convertible";
}
try_acpi:
r = read_one_line_file("/sys/firmware/acpi/pm_profile", &type);
if (r < 0)
return NULL;
r = safe_atou(type, &t);
free(type);
if (r < 0)
return NULL;
/* We only list the really obvious cases here as the ACPI data is not really super reliable.
*
* See the ACPI 5.0 Spec Section 5.2.9.1 for details:
*
* http://www.acpi.info/DOWNLOADS/ACPIspec50.pdf
*/
switch(t) {
case 1: /* Desktop */
case 3: /* Workstation */
case 6: /* Appliance PC */
return "desktop";
case 2: /* Mobile */
return "laptop";
case 4: /* Enterprise Server */
case 5: /* SOHO Server */
case 7: /* Performance Server */
return "server";
case 8: /* Tablet */
return "tablet";
}
return NULL;
}
static char* context_fallback_icon_name(Context *c) {
const char *chassis;
assert(c);
if (!isempty(c->data[PROP_CHASSIS]))
return strappend("computer-", c->data[PROP_CHASSIS]);
chassis = fallback_chassis();
if (chassis)
return strappend("computer-", chassis);
return strdup("computer");
}
static bool hostname_is_useful(const char *hn) {
return !isempty(hn) && !is_localhost(hn);
}
static int context_update_kernel_hostname(Context *c) {
const char *static_hn;
const char *hn;
assert(c);
static_hn = c->data[PROP_STATIC_HOSTNAME];
/* /etc/hostname with something other than "localhost"
* has the highest preference ... */
if (hostname_is_useful(static_hn))
hn = static_hn;
/* ... the transient host name, (ie: DHCP) comes next ... */
else if (!isempty(c->data[PROP_HOSTNAME]))
hn = c->data[PROP_HOSTNAME];
/* ... fallback to static "localhost.*" ignored above ... */
else if (!isempty(static_hn))
hn = static_hn;
/* ... and the ultimate fallback */
else
hn = FALLBACK_HOSTNAME;
if (sethostname_idempotent(hn) < 0)
return -errno;
return 0;
}
static int context_write_data_static_hostname(Context *c) {
assert(c);
if (isempty(c->data[PROP_STATIC_HOSTNAME])) {
if (unlink("/etc/hostname") < 0)
return errno == ENOENT ? 0 : -errno;
return 0;
}
return write_string_file_atomic_label("/etc/hostname", c->data[PROP_STATIC_HOSTNAME]);
}
static int context_write_data_machine_info(Context *c) {
static const char * const name[_PROP_MAX] = {
[PROP_PRETTY_HOSTNAME] = "PRETTY_HOSTNAME",
[PROP_ICON_NAME] = "ICON_NAME",
[PROP_CHASSIS] = "CHASSIS",
[PROP_DEPLOYMENT] = "DEPLOYMENT",
[PROP_LOCATION] = "LOCATION",
};
_cleanup_strv_free_ char **l = NULL;
int r, p;
assert(c);
r = load_env_file(NULL, "/etc/machine-info", NULL, &l);
if (r < 0 && r != -ENOENT)
return r;
for (p = PROP_PRETTY_HOSTNAME; p <= PROP_LOCATION; p++) {
_cleanup_free_ char *t = NULL;
char **u;
assert(name[p]);
if (isempty(c->data[p])) {
strv_env_unset(l, name[p]);
continue;
}
t = strjoin(name[p], "=", c->data[p]);
if (!t)
return -ENOMEM;
u = strv_env_set(l, t);
if (!u)
return -ENOMEM;
strv_free(l);
l = u;
}
if (strv_isempty(l)) {
if (unlink("/etc/machine-info") < 0)
return errno == ENOENT ? 0 : -errno;
return 0;
}
return write_env_file_label("/etc/machine-info", l);
}
static int property_get_icon_name(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
_cleanup_free_ char *n = NULL;
Context *c = userdata;
const char *name;
if (isempty(c->data[PROP_ICON_NAME]))
name = n = context_fallback_icon_name(c);
else
name = c->data[PROP_ICON_NAME];
if (!name)
return -ENOMEM;
return sd_bus_message_append(reply, "s", name);
}
static int property_get_chassis(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Context *c = userdata;
const char *name;
if (isempty(c->data[PROP_CHASSIS]))
name = fallback_chassis();
else
name = c->data[PROP_CHASSIS];
return sd_bus_message_append(reply, "s", name);
}
static int method_set_hostname(sd_bus_message *m, void *userdata, sd_bus_error *error) {
Context *c = userdata;
const char *name;
int interactive;
char *h;
int r;
assert(m);
assert(c);
r = sd_bus_message_read(m, "sb", &name, &interactive);
if (r < 0)
return r;
if (isempty(name))
name = c->data[PROP_STATIC_HOSTNAME];
if (isempty(name))
name = FALLBACK_HOSTNAME;
if (!hostname_is_valid(name, false))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid hostname '%s'", name);
if (streq_ptr(name, c->data[PROP_HOSTNAME]))
return sd_bus_reply_method_return(m, NULL);
r = bus_verify_polkit_async(
m,
CAP_SYS_ADMIN,
"org.freedesktop.hostname1.set-hostname",
NULL,
interactive,
UID_INVALID,
&c->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
h = strdup(name);
if (!h)
return -ENOMEM;
free(c->data[PROP_HOSTNAME]);
c->data[PROP_HOSTNAME] = h;
r = context_update_kernel_hostname(c);
if (r < 0) {
log_error_errno(r, "Failed to set host name: %m");
return sd_bus_error_set_errnof(error, r, "Failed to set hostname: %m");
}
log_info("Changed host name to '%s'", strna(c->data[PROP_HOSTNAME]));
(void) sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), "/org/freedesktop/hostname1", "org.freedesktop.hostname1", "Hostname", NULL);
return sd_bus_reply_method_return(m, NULL);
}
static int method_set_static_hostname(sd_bus_message *m, void *userdata, sd_bus_error *error) {
Context *c = userdata;
const char *name;
int interactive;
int r;
assert(m);
assert(c);
r = sd_bus_message_read(m, "sb", &name, &interactive);
if (r < 0)
return r;
name = empty_to_null(name);
if (streq_ptr(name, c->data[PROP_STATIC_HOSTNAME]))
return sd_bus_reply_method_return(m, NULL);
r = bus_verify_polkit_async(
m,
CAP_SYS_ADMIN,
"org.freedesktop.hostname1.set-static-hostname",
NULL,
interactive,
UID_INVALID,
&c->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
if (isempty(name))
c->data[PROP_STATIC_HOSTNAME] = mfree(c->data[PROP_STATIC_HOSTNAME]);
else {
char *h;
if (!hostname_is_valid(name, false))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid static hostname '%s'", name);
h = strdup(name);
if (!h)
return -ENOMEM;
free(c->data[PROP_STATIC_HOSTNAME]);
c->data[PROP_STATIC_HOSTNAME] = h;
}
r = context_update_kernel_hostname(c);
if (r < 0) {
log_error_errno(r, "Failed to set host name: %m");
return sd_bus_error_set_errnof(error, r, "Failed to set hostname: %m");
}
r = context_write_data_static_hostname(c);
if (r < 0) {
log_error_errno(r, "Failed to write static host name: %m");
return sd_bus_error_set_errnof(error, r, "Failed to set static hostname: %m");
}
log_info("Changed static host name to '%s'", strna(c->data[PROP_STATIC_HOSTNAME]));
(void) sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), "/org/freedesktop/hostname1", "org.freedesktop.hostname1", "StaticHostname", NULL);
return sd_bus_reply_method_return(m, NULL);
}
static int set_machine_info(Context *c, sd_bus_message *m, int prop, sd_bus_message_handler_t cb, sd_bus_error *error) {
int interactive;
const char *name;
int r;
assert(c);
assert(m);
r = sd_bus_message_read(m, "sb", &name, &interactive);
if (r < 0)
return r;
name = empty_to_null(name);
if (streq_ptr(name, c->data[prop]))
return sd_bus_reply_method_return(m, NULL);
/* Since the pretty hostname should always be changed at the
* same time as the static one, use the same policy action for
* both... */
r = bus_verify_polkit_async(
m,
CAP_SYS_ADMIN,
prop == PROP_PRETTY_HOSTNAME ? "org.freedesktop.hostname1.set-static-hostname" : "org.freedesktop.hostname1.set-machine-info",
NULL,
interactive,
UID_INVALID,
&c->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
if (isempty(name))
c->data[prop] = mfree(c->data[prop]);
else {
char *h;
/* The icon name might ultimately be used as file
* name, so better be safe than sorry */
if (prop == PROP_ICON_NAME && !filename_is_valid(name))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid icon name '%s'", name);
if (prop == PROP_PRETTY_HOSTNAME && string_has_cc(name, NULL))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid pretty host name '%s'", name);
if (prop == PROP_CHASSIS && !valid_chassis(name))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid chassis '%s'", name);
if (prop == PROP_DEPLOYMENT && !valid_deployment(name))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid deployment '%s'", name);
if (prop == PROP_LOCATION && string_has_cc(name, NULL))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid location '%s'", name);
h = strdup(name);
if (!h)
return -ENOMEM;
free(c->data[prop]);
c->data[prop] = h;
}
r = context_write_data_machine_info(c);
if (r < 0) {
log_error_errno(r, "Failed to write machine info: %m");
return sd_bus_error_set_errnof(error, r, "Failed to write machine info: %m");
}
log_info("Changed %s to '%s'",
prop == PROP_PRETTY_HOSTNAME ? "pretty host name" :
prop == PROP_DEPLOYMENT ? "deployment" :
prop == PROP_LOCATION ? "location" :
prop == PROP_CHASSIS ? "chassis" : "icon name", strna(c->data[prop]));
(void) sd_bus_emit_properties_changed(
sd_bus_message_get_bus(m),
"/org/freedesktop/hostname1",
"org.freedesktop.hostname1",
prop == PROP_PRETTY_HOSTNAME ? "PrettyHostname" :
prop == PROP_DEPLOYMENT ? "Deployment" :
prop == PROP_LOCATION ? "Location" :
prop == PROP_CHASSIS ? "Chassis" : "IconName" , NULL);
return sd_bus_reply_method_return(m, NULL);
}
static int method_set_pretty_hostname(sd_bus_message *m, void *userdata, sd_bus_error *error) {
return set_machine_info(userdata, m, PROP_PRETTY_HOSTNAME, method_set_pretty_hostname, error);
}
static int method_set_icon_name(sd_bus_message *m, void *userdata, sd_bus_error *error) {
return set_machine_info(userdata, m, PROP_ICON_NAME, method_set_icon_name, error);
}
static int method_set_chassis(sd_bus_message *m, void *userdata, sd_bus_error *error) {
return set_machine_info(userdata, m, PROP_CHASSIS, method_set_chassis, error);
}
static int method_set_deployment(sd_bus_message *m, void *userdata, sd_bus_error *error) {
return set_machine_info(userdata, m, PROP_DEPLOYMENT, method_set_deployment, error);
}
static int method_set_location(sd_bus_message *m, void *userdata, sd_bus_error *error) {
return set_machine_info(userdata, m, PROP_LOCATION, method_set_location, error);
}
static const sd_bus_vtable hostname_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("Hostname", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_HOSTNAME, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("StaticHostname", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_STATIC_HOSTNAME, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("PrettyHostname", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_PRETTY_HOSTNAME, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("IconName", "s", property_get_icon_name, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("Chassis", "s", property_get_chassis, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("Deployment", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_DEPLOYMENT, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("Location", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_LOCATION, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("KernelName", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_KERNEL_NAME, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("KernelRelease", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_KERNEL_RELEASE, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("KernelVersion", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_KERNEL_VERSION, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("OperatingSystemPrettyName", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_OS_PRETTY_NAME, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("OperatingSystemCPEName", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_OS_CPE_NAME, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_METHOD("SetHostname", "sb", NULL, method_set_hostname, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("SetStaticHostname", "sb", NULL, method_set_static_hostname, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("SetPrettyHostname", "sb", NULL, method_set_pretty_hostname, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("SetIconName", "sb", NULL, method_set_icon_name, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("SetChassis", "sb", NULL, method_set_chassis, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("SetDeployment", "sb", NULL, method_set_deployment, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("SetLocation", "sb", NULL, method_set_location, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_VTABLE_END,
};
static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
int r;
assert(c);
assert(event);
assert(_bus);
r = sd_bus_default_system(&bus);
if (r < 0)
return log_error_errno(r, "Failed to get system bus connection: %m");
r = sd_bus_add_object_vtable(bus, NULL, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", hostname_vtable, c);
if (r < 0)
return log_error_errno(r, "Failed to register object: %m");
r = sd_bus_request_name(bus, "org.freedesktop.hostname1", 0);
if (r < 0)
return log_error_errno(r, "Failed to register name: %m");
r = sd_bus_attach_event(bus, event, 0);
if (r < 0)
return log_error_errno(r, "Failed to attach bus to event loop: %m");
*_bus = bus;
bus = NULL;
return 0;
}
int main(int argc, char *argv[]) {
Context context = {};
_cleanup_(sd_event_unrefp) sd_event *event = NULL;
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
int r;
log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
log_open();
umask(0022);
mac_selinux_init();
if (argc != 1) {
log_error("This program takes no arguments.");
r = -EINVAL;
goto finish;
}
r = sd_event_default(&event);
if (r < 0) {
log_error_errno(r, "Failed to allocate event loop: %m");
goto finish;
}
sd_event_set_watchdog(event, true);
r = connect_bus(&context, event, &bus);
if (r < 0)
goto finish;
r = context_read_data(&context);
if (r < 0) {
log_error_errno(r, "Failed to read hostname and machine information: %m");
goto finish;
}
r = bus_event_loop_with_idle(event, bus, "org.freedesktop.hostname1", DEFAULT_EXIT_USEC, NULL, NULL);
if (r < 0) {
log_error_errno(r, "Failed to run event loop: %m");
goto finish;
}
finish:
context_free(&context);
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
|