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
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
|
/*
* node_device_hal.c: node device enumeration - HAL-based implementation
*
* Copyright (C) 2011 Red Hat, Inc.
* Copyright (C) 2008 Virtual Iron Software, Inc.
* Copyright (C) 2008 David F. Lively
*
* This library 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.
*
* This library 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 this library; If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: David F. Lively <dlively@virtualiron.com>
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <libhal.h>
#include "node_device_conf.h"
#include "node_device_hal.h"
#include "virterror_internal.h"
#include "driver.h"
#include "datatypes.h"
#include "memory.h"
#include "uuid.h"
#include "pci.h"
#include "logging.h"
#include "node_device_driver.h"
#include "virdbus.h"
#define VIR_FROM_THIS VIR_FROM_NODEDEV
/*
* Host device enumeration (HAL implementation)
*/
static virDeviceMonitorStatePtr driverState;
#define CONN_DRV_STATE(conn) \
((virDeviceMonitorStatePtr)((conn)->devMonPrivateData))
#define DRV_STATE_HAL_CTX(ds) ((LibHalContext *)((ds)->privateData))
#define CONN_HAL_CTX(conn) DRV_STATE_HAL_CTX(CONN_DRV_STATE(conn))
#define NODE_DEV_UDI(obj) ((const char *)((obj)->privateData)
static const char *hal_name(const char *udi)
{
const char *name = strrchr(udi, '/');
if (name)
return name+1;
return udi;
}
static int get_str_prop(LibHalContext *ctxt, const char *udi,
const char *prop, char **val_p)
{
char *val = libhal_device_get_property_string(ctxt, udi, prop, NULL);
if (val) {
if (*val) {
*val_p = val;
return 0;
} else {
/* Treat empty strings as NULL values */
VIR_FREE(val);
}
}
return -1;
}
static int get_int_prop(LibHalContext *ctxt, const char *udi,
const char *prop, int *val_p)
{
DBusError err;
int val;
int rv;
dbus_error_init(&err);
val = libhal_device_get_property_int(ctxt, udi, prop, &err);
rv = dbus_error_is_set(&err);
dbus_error_free(&err);
if (rv == 0)
*val_p = val;
return rv;
}
static int get_bool_prop(LibHalContext *ctxt, const char *udi,
const char *prop, int *val_p)
{
DBusError err;
int val;
int rv;
dbus_error_init(&err);
val = libhal_device_get_property_bool(ctxt, udi, prop, &err);
rv = dbus_error_is_set(&err);
dbus_error_free(&err);
if (rv == 0)
*val_p = val;
return rv;
}
static int get_uint64_prop(LibHalContext *ctxt, const char *udi,
const char *prop, unsigned long long *val_p)
{
DBusError err;
unsigned long long val;
int rv;
dbus_error_init(&err);
val = libhal_device_get_property_uint64(ctxt, udi, prop, &err);
rv = dbus_error_is_set(&err);
dbus_error_free(&err);
if (rv == 0)
*val_p = val;
return rv;
}
static int gather_pci_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
char *sysfs_path;
if (get_str_prop(ctx, udi, "pci.linux.sysfs_path", &sysfs_path) == 0) {
char *p = strrchr(sysfs_path, '/');
if (p) {
(void)virStrToLong_ui(p+1, &p, 16, &d->pci_dev.domain);
(void)virStrToLong_ui(p+1, &p, 16, &d->pci_dev.bus);
(void)virStrToLong_ui(p+1, &p, 16, &d->pci_dev.slot);
(void)virStrToLong_ui(p+1, &p, 16, &d->pci_dev.function);
}
if (!pciGetPhysicalFunction(sysfs_path, &d->pci_dev.physical_function))
d->pci_dev.flags |= VIR_NODE_DEV_CAP_FLAG_PCI_PHYSICAL_FUNCTION;
if (!pciGetVirtualFunctions(sysfs_path, &d->pci_dev.virtual_functions,
&d->pci_dev.num_virtual_functions) ||
d->pci_dev.num_virtual_functions > 0)
d->pci_dev.flags |= VIR_NODE_DEV_CAP_FLAG_PCI_VIRTUAL_FUNCTION;
VIR_FREE(sysfs_path);
}
(void)get_int_prop(ctx, udi, "pci.vendor_id", (int *)&d->pci_dev.vendor);
if (get_str_prop(ctx, udi, "pci.vendor", &d->pci_dev.vendor_name) != 0)
(void)get_str_prop(ctx, udi, "info.vendor", &d->pci_dev.vendor_name);
(void)get_int_prop(ctx, udi, "pci.product_id", (int *)&d->pci_dev.product);
if (get_str_prop(ctx, udi, "pci.product", &d->pci_dev.product_name) != 0)
(void)get_str_prop(ctx, udi, "info.product", &d->pci_dev.product_name);
return 0;
}
static int gather_usb_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
(void)get_int_prop(ctx, udi, "usb.interface.number",
(int *)&d->usb_if.number);
(void)get_int_prop(ctx, udi, "usb.interface.class",
(int *)&d->usb_if._class);
(void)get_int_prop(ctx, udi, "usb.interface.subclass",
(int *)&d->usb_if.subclass);
(void)get_int_prop(ctx, udi, "usb.interface.protocol",
(int *)&d->usb_if.protocol);
(void)get_str_prop(ctx, udi, "usb.interface.description",
&d->usb_if.description);
return 0;
}
static int gather_usb_device_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
(void)get_int_prop(ctx, udi, "usb_device.bus_number",
(int *)&d->usb_dev.bus);
(void)get_int_prop(ctx, udi, "usb_device.linux.device_number",
(int *)&d->usb_dev.device);
(void)get_int_prop(ctx, udi, "usb_device.vendor_id",
(int *)&d->usb_dev.vendor);
if (get_str_prop(ctx, udi, "usb_device.vendor",
&d->usb_dev.vendor_name) != 0)
(void)get_str_prop(ctx, udi, "info.vendor", &d->usb_dev.vendor_name);
(void)get_int_prop(ctx, udi, "usb_device.product_id",
(int *)&d->usb_dev.product);
if (get_str_prop(ctx, udi, "usb_device.product",
&d->usb_dev.product_name) != 0)
(void)get_str_prop(ctx, udi, "info.product", &d->usb_dev.product_name);
return 0;
}
static int gather_net_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
unsigned long long dummy;
(void)get_str_prop(ctx, udi, "net.interface", &d->net.ifname);
(void)get_str_prop(ctx, udi, "net.address", &d->net.address);
if (get_uint64_prop(ctx, udi, "net.80203.mac_address",
&dummy) == 0)
d->net.subtype = VIR_NODE_DEV_CAP_NET_80203;
else if (get_uint64_prop(ctx, udi, "net.80211.mac_address",
&dummy) == 0)
d->net.subtype = VIR_NODE_DEV_CAP_NET_80211;
else
d->net.subtype = VIR_NODE_DEV_CAP_NET_LAST;
return 0;
}
static int gather_scsi_host_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
int retval = 0;
(void)get_int_prop(ctx, udi, "scsi_host.host", (int *)&d->scsi_host.host);
retval = check_fc_host(d);
if (retval == -1) {
goto out;
}
retval = check_vport_capable(d);
out:
return retval;
}
static int gather_scsi_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
(void)get_int_prop(ctx, udi, "scsi.host", (int *)&d->scsi.host);
(void)get_int_prop(ctx, udi, "scsi.bus", (int *)&d->scsi.bus);
(void)get_int_prop(ctx, udi, "scsi.target", (int *)&d->scsi.target);
(void)get_int_prop(ctx, udi, "scsi.lun", (int *)&d->scsi.lun);
(void)get_str_prop(ctx, udi, "scsi.type", &d->scsi.type);
return 0;
}
static int gather_storage_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
int val;
(void)get_str_prop(ctx, udi, "block.device", &d->storage.block);
(void)get_str_prop(ctx, udi, "storage.bus", &d->storage.bus);
(void)get_str_prop(ctx, udi, "storage.drive_type", &d->storage.drive_type);
(void)get_str_prop(ctx, udi, "storage.model", &d->storage.model);
(void)get_str_prop(ctx, udi, "storage.vendor", &d->storage.vendor);
(void)get_str_prop(ctx, udi, "storage.serial", &d->storage.serial);
if (get_bool_prop(ctx, udi, "storage.removable", &val) == 0 && val) {
d->storage.flags |= VIR_NODE_DEV_CAP_STORAGE_REMOVABLE;
if (get_bool_prop(ctx, udi, "storage.removable.media_available",
&val) == 0 && val) {
d->storage.flags |=
VIR_NODE_DEV_CAP_STORAGE_REMOVABLE_MEDIA_AVAILABLE;
(void)get_uint64_prop(ctx, udi, "storage.removable.media_size",
&d->storage.removable_media_size);
}
} else {
(void)get_uint64_prop(ctx, udi, "storage.size", &d->storage.size);
}
if (get_bool_prop(ctx, udi, "storage.hotpluggable", &val) == 0 && val)
d->storage.flags |= VIR_NODE_DEV_CAP_STORAGE_HOTPLUGGABLE;
return 0;
}
static int gather_system_cap(LibHalContext *ctx, const char *udi,
union _virNodeDevCapData *d)
{
char *uuidstr;
(void)get_str_prop(ctx, udi, "system.product", &d->system.product_name);
(void)get_str_prop(ctx, udi, "system.hardware.vendor",
&d->system.hardware.vendor_name);
(void)get_str_prop(ctx, udi, "system.hardware.version",
&d->system.hardware.version);
(void)get_str_prop(ctx, udi, "system.hardware.serial",
&d->system.hardware.serial);
if (get_str_prop(ctx, udi, "system.hardware.uuid", &uuidstr) == 0) {
ignore_value(virUUIDParse(uuidstr, d->system.hardware.uuid));
VIR_FREE(uuidstr);
}
(void)get_str_prop(ctx, udi, "system.firmware.vendor",
&d->system.firmware.vendor_name);
(void)get_str_prop(ctx, udi, "system.firmware.version",
&d->system.firmware.version);
(void)get_str_prop(ctx, udi, "system.firmware.release_date",
&d->system.firmware.release_date);
return 0;
}
struct _caps_tbl_entry {
const char *cap_name;
enum virNodeDevCapType type;
int (*gather_fn)(LibHalContext *ctx,
const char *udi,
union _virNodeDevCapData *data);
};
typedef struct _caps_tbl_entry caps_tbl_entry;
static caps_tbl_entry caps_tbl[] = {
{ "system", VIR_NODE_DEV_CAP_SYSTEM, gather_system_cap },
{ "pci", VIR_NODE_DEV_CAP_PCI_DEV, gather_pci_cap },
{ "usb", VIR_NODE_DEV_CAP_USB_INTERFACE, gather_usb_cap },
{ "usb_device", VIR_NODE_DEV_CAP_USB_DEV, gather_usb_device_cap },
{ "net", VIR_NODE_DEV_CAP_NET, gather_net_cap },
{ "scsi_host", VIR_NODE_DEV_CAP_SCSI_HOST, gather_scsi_host_cap },
{ "scsi", VIR_NODE_DEV_CAP_SCSI, gather_scsi_cap },
{ "storage", VIR_NODE_DEV_CAP_STORAGE, gather_storage_cap },
};
/* qsort/bsearch string comparator */
static int cmpstringp(const void *p1, const void *p2)
{
/* from man 3 qsort */
return strcmp(* (char * const *) p1, * (char * const *) p2);
}
static int gather_capability(LibHalContext *ctx, const char *udi,
const char *cap_name,
virNodeDevCapsDefPtr *caps_p)
{
caps_tbl_entry *entry;
entry = bsearch(&cap_name, caps_tbl, ARRAY_CARDINALITY(caps_tbl),
sizeof(caps_tbl[0]), cmpstringp);
if (entry) {
virNodeDevCapsDefPtr caps;
if (VIR_ALLOC(caps) < 0)
return ENOMEM;
caps->type = entry->type;
if (entry->gather_fn) {
int rv = (*entry->gather_fn)(ctx, udi, &caps->data);
if (rv != 0) {
virNodeDevCapsDefFree(caps);
return rv;
}
}
caps->next = *caps_p;
*caps_p = caps;
}
return 0;
}
static int gather_capabilities(LibHalContext *ctx, const char *udi,
virNodeDevCapsDefPtr *caps_p)
{
char *bus_name = NULL;
virNodeDevCapsDefPtr caps = NULL;
char **hal_cap_names = NULL;
int rv, i;
if (STREQ(udi, "/org/freedesktop/Hal/devices/computer")) {
rv = gather_capability(ctx, udi, "system", &caps);
if (rv != 0)
goto failure;
}
if (get_str_prop(ctx, udi, "info.subsystem", &bus_name) == 0 ||
get_str_prop(ctx, udi, "linux.subsystem", &bus_name) == 0) {
rv = gather_capability(ctx, udi, bus_name, &caps);
if (rv != 0)
goto failure;
}
hal_cap_names = libhal_device_get_property_strlist(ctx, udi,
"info.capabilities",
NULL);
if (hal_cap_names) {
for (i = 0; hal_cap_names[i]; i++) {
if (! (bus_name && STREQ(hal_cap_names[i], bus_name))) {
rv = gather_capability(ctx, udi, hal_cap_names[i], &caps);
if (rv != 0)
goto failure;
}
}
for (i = 0; hal_cap_names[i]; i++)
VIR_FREE(hal_cap_names[i]);
VIR_FREE(hal_cap_names);
}
VIR_FREE(bus_name);
*caps_p = caps;
return 0;
failure:
VIR_FREE(bus_name);
if (hal_cap_names) {
for (i = 0; hal_cap_names[i]; i++)
VIR_FREE(hal_cap_names[i]);
VIR_FREE(hal_cap_names);
}
while (caps) {
virNodeDevCapsDefPtr next = caps->next;
virNodeDevCapsDefFree(caps);
caps = next;
}
return rv;
}
static void free_udi(void *udi)
{
VIR_FREE(udi);
}
static void dev_create(const char *udi)
{
LibHalContext *ctx;
char *parent_key = NULL;
virNodeDeviceObjPtr dev = NULL;
virNodeDeviceDefPtr def = NULL;
const char *name = hal_name(udi);
int rv;
char *privData = strdup(udi);
char *devicePath = NULL;
if (!privData)
return;
nodeDeviceLock(driverState);
ctx = DRV_STATE_HAL_CTX(driverState);
if (VIR_ALLOC(def) < 0)
goto failure;
if ((def->name = strdup(name)) == NULL)
goto failure;
if (get_str_prop(ctx, udi, "info.parent", &parent_key) == 0) {
def->parent = strdup(hal_name(parent_key));
VIR_FREE(parent_key);
if (def->parent == NULL)
goto failure;
}
rv = gather_capabilities(ctx, udi, &def->caps);
if (rv != 0) goto failure;
if (def->caps == NULL)
goto cleanup;
/* Some devices don't have a path in sysfs, so ignore failure */
(void)get_str_prop(ctx, udi, "linux.sysfs_path", &devicePath);
dev = virNodeDeviceAssignDef(&driverState->devs,
def);
if (!dev) {
VIR_FREE(devicePath);
goto failure;
}
dev->privateData = privData;
dev->privateFree = free_udi;
dev->def->sysfs_path = devicePath;
virNodeDeviceObjUnlock(dev);
nodeDeviceUnlock(driverState);
return;
failure:
VIR_DEBUG("FAILED TO ADD dev %s", name);
cleanup:
VIR_FREE(privData);
virNodeDeviceDefFree(def);
nodeDeviceUnlock(driverState);
}
static void dev_refresh(const char *udi)
{
const char *name = hal_name(udi);
virNodeDeviceObjPtr dev;
nodeDeviceLock(driverState);
dev = virNodeDeviceFindByName(&driverState->devs, name);
if (dev) {
/* Simply "rediscover" device -- incrementally handling changes
* to sub-capabilities (like net.80203) is nasty ... so avoid it.
*/
virNodeDeviceObjRemove(&driverState->devs, dev);
} else
VIR_DEBUG("no device named %s", name);
nodeDeviceUnlock(driverState);
if (dev) {
dev_create(udi);
}
}
static void device_added(LibHalContext *ctx ATTRIBUTE_UNUSED,
const char *udi)
{
VIR_DEBUG("%s", hal_name(udi));
dev_create(udi);
}
static void device_removed(LibHalContext *ctx ATTRIBUTE_UNUSED,
const char *udi)
{
const char *name = hal_name(udi);
virNodeDeviceObjPtr dev;
nodeDeviceLock(driverState);
dev = virNodeDeviceFindByName(&driverState->devs,name);
VIR_DEBUG("%s", name);
if (dev)
virNodeDeviceObjRemove(&driverState->devs, dev);
else
VIR_DEBUG("no device named %s", name);
nodeDeviceUnlock(driverState);
}
static void device_cap_added(LibHalContext *ctx,
const char *udi, const char *cap)
{
const char *name = hal_name(udi);
virNodeDeviceObjPtr dev;
nodeDeviceLock(driverState);
dev = virNodeDeviceFindByName(&driverState->devs,name);
nodeDeviceUnlock(driverState);
VIR_DEBUG("%s %s", cap, name);
if (dev) {
(void)gather_capability(ctx, udi, cap, &dev->def->caps);
virNodeDeviceObjUnlock(dev);
} else {
VIR_DEBUG("no device named %s", name);
}
}
static void device_cap_lost(LibHalContext *ctx ATTRIBUTE_UNUSED,
const char *udi,
const char *cap)
{
const char *name = hal_name(udi);
VIR_DEBUG("%s %s", cap, name);
dev_refresh(udi);
}
static void device_prop_modified(LibHalContext *ctx ATTRIBUTE_UNUSED,
const char *udi,
const char *key,
dbus_bool_t is_removed ATTRIBUTE_UNUSED,
dbus_bool_t is_added ATTRIBUTE_UNUSED)
{
const char *name = hal_name(udi);
VIR_DEBUG("%s %s", name, key);
dev_refresh(udi);
}
static int halDeviceMonitorStartup(int privileged ATTRIBUTE_UNUSED)
{
LibHalContext *hal_ctx = NULL;
char **udi = NULL;
int num_devs, i;
int ret = -1;
DBusConnection *sysbus;
DBusError err;
/* Ensure caps_tbl is sorted by capability name */
qsort(caps_tbl, ARRAY_CARDINALITY(caps_tbl), sizeof(caps_tbl[0]),
cmpstringp);
if (VIR_ALLOC(driverState) < 0)
return -1;
if (virMutexInit(&driverState->lock) < 0) {
VIR_FREE(driverState);
return -1;
}
nodeDeviceLock(driverState);
if (!(sysbus = virDBusGetSystemBus())) {
virErrorPtr verr = virGetLastError();
VIR_ERROR(_("DBus not available, disabling HAL driver: %s"),
verr->message);
ret = 0;
goto failure;
}
dbus_error_init(&err);
hal_ctx = libhal_ctx_new();
if (hal_ctx == NULL) {
VIR_ERROR(_("libhal_ctx_new returned NULL"));
goto failure;
}
if (!libhal_ctx_set_dbus_connection(hal_ctx, sysbus)) {
VIR_ERROR(_("libhal_ctx_set_dbus_connection failed"));
goto failure;
}
if (!libhal_ctx_init(hal_ctx, &err)) {
VIR_ERROR(_("libhal_ctx_init failed, haldaemon is probably not running"));
/* We don't want to show a fatal error here,
otherwise entire libvirtd shuts down when
hald isn't running */
ret = 0;
goto failure;
}
/* Populate with known devices */
driverState->privateData = hal_ctx;
/* We need to unlock state now, since setting these callbacks cause
* a dbus RPC call, and while this call is waiting for the reply,
* a signal may already arrive, triggering the callback and thus
* requiring the lock !
*/
nodeDeviceUnlock(driverState);
/* Register HAL event callbacks */
if (!libhal_ctx_set_device_added(hal_ctx, device_added) ||
!libhal_ctx_set_device_removed(hal_ctx, device_removed) ||
!libhal_ctx_set_device_new_capability(hal_ctx, device_cap_added) ||
!libhal_ctx_set_device_lost_capability(hal_ctx, device_cap_lost) ||
!libhal_ctx_set_device_property_modified(hal_ctx, device_prop_modified) ||
!libhal_device_property_watch_all(hal_ctx, &err)) {
VIR_ERROR(_("setting up HAL callbacks failed"));
goto failure;
}
udi = libhal_get_all_devices(hal_ctx, &num_devs, &err);
if (udi == NULL) {
VIR_ERROR(_("libhal_get_all_devices failed"));
goto failure;
}
for (i = 0; i < num_devs; i++) {
dev_create(udi[i]);
VIR_FREE(udi[i]);
}
VIR_FREE(udi);
return 0;
failure:
if (dbus_error_is_set(&err)) {
VIR_ERROR(_("%s: %s"), err.name, err.message);
dbus_error_free(&err);
}
virNodeDeviceObjListFree(&driverState->devs);
if (hal_ctx)
(void)libhal_ctx_free(hal_ctx);
nodeDeviceUnlock(driverState);
VIR_FREE(driverState);
return ret;
}
static int halDeviceMonitorShutdown(void)
{
if (driverState) {
nodeDeviceLock(driverState);
LibHalContext *hal_ctx = DRV_STATE_HAL_CTX(driverState);
virNodeDeviceObjListFree(&driverState->devs);
(void)libhal_ctx_shutdown(hal_ctx, NULL);
(void)libhal_ctx_free(hal_ctx);
nodeDeviceUnlock(driverState);
virMutexDestroy(&driverState->lock);
VIR_FREE(driverState);
return 0;
}
return -1;
}
static int halDeviceMonitorReload(void)
{
DBusError err;
char **udi = NULL;
int num_devs, i;
LibHalContext *hal_ctx;
VIR_INFO("Reloading HAL device state");
nodeDeviceLock(driverState);
VIR_INFO("Removing existing objects");
virNodeDeviceObjListFree(&driverState->devs);
nodeDeviceUnlock(driverState);
hal_ctx = DRV_STATE_HAL_CTX(driverState);
VIR_INFO("Creating new objects");
dbus_error_init(&err);
udi = libhal_get_all_devices(hal_ctx, &num_devs, &err);
if (udi == NULL) {
VIR_ERROR(_("libhal_get_all_devices failed"));
return -1;
}
for (i = 0; i < num_devs; i++) {
dev_create(udi[i]);
VIR_FREE(udi[i]);
}
VIR_FREE(udi);
VIR_INFO("HAL device reload complete");
return 0;
}
static int halDeviceMonitorActive(void)
{
/* Always ready to deal with a shutdown */
return 0;
}
static virDrvOpenStatus halNodeDrvOpen(virConnectPtr conn,
virConnectAuthPtr auth ATTRIBUTE_UNUSED,
unsigned int flags)
{
virCheckFlags(VIR_CONNECT_RO, VIR_DRV_OPEN_ERROR);
if (driverState == NULL)
return VIR_DRV_OPEN_DECLINED;
conn->devMonPrivateData = driverState;
return VIR_DRV_OPEN_SUCCESS;
}
static int halNodeDrvClose(virConnectPtr conn ATTRIBUTE_UNUSED)
{
conn->devMonPrivateData = NULL;
return 0;
}
static virDeviceMonitor halDeviceMonitor = {
.name = "halDeviceMonitor",
.open = halNodeDrvOpen, /* 0.5.0 */
.close = halNodeDrvClose, /* 0.5.0 */
.numOfDevices = nodeNumOfDevices, /* 0.5.0 */
.listDevices = nodeListDevices, /* 0.5.0 */
.listAllNodeDevices = nodeListAllNodeDevices, /* 0.10.2 */
.deviceLookupByName = nodeDeviceLookupByName, /* 0.5.0 */
.deviceGetXMLDesc = nodeDeviceGetXMLDesc, /* 0.5.0 */
.deviceGetParent = nodeDeviceGetParent, /* 0.5.0 */
.deviceNumOfCaps = nodeDeviceNumOfCaps, /* 0.5.0 */
.deviceListCaps = nodeDeviceListCaps, /* 0.5.0 */
.deviceCreateXML = nodeDeviceCreateXML, /* 0.6.5 */
.deviceDestroy = nodeDeviceDestroy, /* 0.6.5 */
};
static virStateDriver halStateDriver = {
.name = "HAL",
.initialize = halDeviceMonitorStartup, /* 0.5.0 */
.cleanup = halDeviceMonitorShutdown, /* 0.5.0 */
.reload = halDeviceMonitorReload, /* 0.5.0 */
.active = halDeviceMonitorActive, /* 0.5.0 */
};
int halNodeRegister(void)
{
if (virRegisterDeviceMonitor(&halDeviceMonitor) < 0)
return -1;
return virRegisterStateDriver(&halStateDriver);
}
|