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2547 cejka 1
/*
2
 * Copyright (c) 2007 Josef Cejka
3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
29
/**
30
 * @defgroup devmap Device mapper.
31
 * @brief   HelenOS device mapper.
32
 * @{
33
 */
34
 
35
/** @file
36
 */
37
 
38
#include <ipc/services.h>
39
#include <ipc/ns.h>
40
#include <async.h>
41
#include <stdio.h>
42
#include <errno.h>
2555 cejka 43
#include <bool.h>
44
#include <futex.h>
2594 cejka 45
#include <stdlib.h>
46
#include <string.h>
3080 decky 47
#include <ipc/devmap.h>
2547 cejka 48
 
3080 decky 49
#define NAME "devmap"
2547 cejka 50
 
2555 cejka 51
 
2594 cejka 52
LIST_INITIALIZE(devices_list);
53
LIST_INITIALIZE(drivers_list);
2555 cejka 54
 
2594 cejka 55
/* order of locking:
56
 * drivers_list_futex
57
 * devices_list_futex
58
 * (devmap_driver_t *)->devices_futex
59
 * create_handle_futex
60
 **/
61
 
62
static atomic_t devices_list_futex = FUTEX_INITIALIZER;
63
static atomic_t drivers_list_futex = FUTEX_INITIALIZER;
64
static atomic_t create_handle_futex = FUTEX_INITIALIZER;
65
 
66
 
67
static int devmap_create_handle(void)
68
{
69
    static int last_handle = 0;
70
    int handle;
71
 
72
    /* TODO: allow reusing old handles after their unregistration
73
        and implement some version of LRU algorithm */
74
    /* FIXME: overflow */
75
    futex_down(&create_handle_futex);  
76
 
77
    last_handle += 1;
78
    handle = last_handle;
79
 
80
    futex_up(&create_handle_futex);
81
 
82
    return handle;
83
}
84
 
85
 
2547 cejka 86
/** Initialize device mapper.
87
 *
88
 *
89
 */
90
static int devmap_init()
91
{
2594 cejka 92
    /* TODO: */
2547 cejka 93
 
2555 cejka 94
    return EOK;
2547 cejka 95
}
96
 
2594 cejka 97
/** Find device with given name.
98
 *
99
 */
100
static devmap_device_t *devmap_device_find_name(const char *name)
2555 cejka 101
{
2594 cejka 102
    link_t *item;
103
    devmap_device_t *device = NULL;
104
 
105
    item = devices_list.next;
106
 
107
    while (item != &devices_list) {
108
 
109
        device = list_get_instance(item, devmap_device_t, devices);
110
        if (0 == strcmp(device->name, name)) {
111
            break;
112
        }
113
        item = item->next;
114
    }
115
 
3080 decky 116
    if (item == &devices_list)
2594 cejka 117
        return NULL;
118
 
119
    device = list_get_instance(item, devmap_device_t, devices);
120
    return device;
121
}
122
 
123
/** Find device with given handle.
124
 * @todo: use hash table
125
 */
126
static devmap_device_t *devmap_device_find_handle(int handle)
127
{
128
    link_t *item;
129
    devmap_device_t *device = NULL;
130
 
131
    futex_down(&devices_list_futex);
132
 
133
    item = (&devices_list)->next;
134
 
135
    while (item != &devices_list) {
136
 
137
        device = list_get_instance(item, devmap_device_t, devices);
138
        if (device->handle == handle) {
139
            break;
140
        }
141
        item = item->next;
142
    }
143
 
144
    if (item == &devices_list) {
145
        futex_up(&devices_list_futex);
146
        return NULL;
147
    }
148
 
149
    device = list_get_instance(item, devmap_device_t, devices);
150
 
151
    futex_up(&devices_list_futex);
152
 
153
    return device;
154
}
155
 
2598 jermar 156
/**
157
 * Unregister device and free it. It's assumed that driver's device list is
158
 * already locked.
2594 cejka 159
 */
160
static int devmap_device_unregister_core(devmap_device_t *device)
161
{
162
 
163
    list_remove(&(device->devices));
164
    list_remove(&(device->driver_devices));
165
 
166
    free(device->name);
167
    free(device);
168
 
169
 
170
    return EOK;
171
}
172
 
2598 jermar 173
/**
174
 * Read info about new driver and add it into linked list of registered
175
 * drivers.
2594 cejka 176
 */
177
static void devmap_driver_register(devmap_driver_t **odriver)
178
{
179
    size_t name_size;
2555 cejka 180
    ipc_callid_t callid;
181
    ipc_call_t call;
2594 cejka 182
    devmap_driver_t *driver;
183
    ipc_callid_t iid;
184
    ipc_call_t icall;
185
 
186
    *odriver = NULL;
2555 cejka 187
 
2594 cejka 188
    iid = async_get_call(&icall);
189
 
190
    if (IPC_GET_METHOD(icall) != DEVMAP_DRIVER_REGISTER) {
2619 jermar 191
        ipc_answer_0(iid, EREFUSED);
2594 cejka 192
        return;
193
    }
194
 
2598 jermar 195
    if (NULL ==
196
        (driver = (devmap_driver_t *)malloc(sizeof(devmap_driver_t)))) {
2619 jermar 197
        ipc_answer_0(iid, ENOMEM);
2594 cejka 198
        return;
2555 cejka 199
    }
2547 cejka 200
 
2594 cejka 201
    /*
202
     * Get driver name
203
     */
2676 jermar 204
    if (!ipc_data_write_receive(&callid, &name_size)) {
2594 cejka 205
        free(driver);
2619 jermar 206
        ipc_answer_0(callid, EREFUSED);
207
        ipc_answer_0(iid, EREFUSED);
2594 cejka 208
        return;
2555 cejka 209
    }
2594 cejka 210
 
211
    if (name_size > DEVMAP_NAME_MAXLEN) {
212
        free(driver);
2619 jermar 213
        ipc_answer_0(callid, EINVAL);
214
        ipc_answer_0(iid, EREFUSED);
2594 cejka 215
        return;
216
    }
217
 
218
    /*
219
     * Allocate buffer for device name.
220
     */
221
    if (NULL == (driver->name = (char *)malloc(name_size + 1))) {
222
        free(driver);
2619 jermar 223
        ipc_answer_0(callid, ENOMEM);
224
        ipc_answer_0(iid, EREFUSED);
2594 cejka 225
        return;
226
    }  
227
 
228
    /*
229
     * Send confirmation to sender and get data into buffer.
230
     */
2678 jermar 231
    if (EOK != ipc_data_write_finalize(callid, driver->name, name_size)) {
2594 cejka 232
        free(driver->name);
233
        free(driver);
2619 jermar 234
        ipc_answer_0(iid, EREFUSED);
2594 cejka 235
        return;
236
    }
237
 
238
    driver->name[name_size] = 0;
239
 
240
    /* Initialize futex for list of devices owned by this driver */
2598 jermar 241
    futex_initialize(&(driver->devices_futex), 1);
2594 cejka 242
 
243
    /*
244
     * Initialize list of asociated devices
2619 jermar 245
     */
2594 cejka 246
    list_initialize(&(driver->devices));
247
 
248
    /*
249
     * Create connection to the driver
250
     */
251
    callid = async_get_call(&call);
252
 
253
    if (IPC_M_CONNECT_TO_ME != IPC_GET_METHOD(call)) {
2619 jermar 254
        ipc_answer_0(callid, ENOTSUP);
2594 cejka 255
 
256
        free(driver->name);
257
        free(driver);
2619 jermar 258
        ipc_answer_0(iid, ENOTSUP);
2594 cejka 259
        return;
260
    }
261
 
2637 cejka 262
    driver->phone = IPC_GET_ARG5(call);
2594 cejka 263
 
2619 jermar 264
    ipc_answer_0(callid, EOK);
2594 cejka 265
 
266
    list_initialize(&(driver->drivers));
267
 
268
    futex_down(&drivers_list_futex);   
269
 
2598 jermar 270
    /* TODO:
271
     * check that no driver with name equal to driver->name is registered
272
     */
2594 cejka 273
 
274
    /*
275
     * Insert new driver into list of registered drivers
276
     */
277
    list_append(&(driver->drivers), &drivers_list);
278
    futex_up(&drivers_list_futex); 
279
 
2619 jermar 280
    ipc_answer_0(iid, EOK);
2594 cejka 281
 
282
    *odriver = driver;
2555 cejka 283
}
284
 
2619 jermar 285
/** Unregister device driver, unregister all its devices and free driver
286
 * structure.
2594 cejka 287
 */
288
static int devmap_driver_unregister(devmap_driver_t *driver)
2555 cejka 289
{
2594 cejka 290
    devmap_device_t *device;
291
 
3080 decky 292
    if (NULL == driver)
2594 cejka 293
        return EEXISTS;
3080 decky 294
 
2594 cejka 295
    futex_down(&drivers_list_futex);   
296
 
297
    ipc_hangup(driver->phone);
298
 
299
    /* remove it from list of drivers */
300
    list_remove(&(driver->drivers));
301
 
302
    /* unregister all its devices */
303
 
304
    futex_down(&devices_list_futex);   
305
    futex_down(&(driver->devices_futex));
306
 
307
    while (!list_empty(&(driver->devices))) {
2598 jermar 308
        device = list_get_instance(driver->devices.next,
309
            devmap_device_t, driver_devices);
2594 cejka 310
        devmap_device_unregister_core(device);
311
    }
312
 
313
    futex_up(&(driver->devices_futex));
314
    futex_up(&devices_list_futex); 
315
    futex_up(&drivers_list_futex); 
316
 
317
    /* free name and driver */
318
    if (NULL != driver->name) {
319
        free(driver->name);
320
    }
321
 
322
    free(driver);
323
 
2555 cejka 324
    return EOK;
325
}
326
 
2594 cejka 327
 
328
/** Register instance of device
329
 *
330
 */
331
static void devmap_device_register(ipc_callid_t iid, ipc_call_t *icall,
2619 jermar 332
    devmap_driver_t *driver)
2555 cejka 333
{
2594 cejka 334
    ipc_callid_t callid;
335
    size_t size;
336
    devmap_device_t *device;
2555 cejka 337
 
2594 cejka 338
    if (NULL == driver) {
2619 jermar 339
        ipc_answer_0(iid, EREFUSED);
2594 cejka 340
        return;
341
    }
342
 
343
    /* Create new device entry */
2598 jermar 344
    if (NULL ==
3080 decky 345
        (device = (devmap_device_t *) malloc(sizeof(devmap_device_t)))) {
2619 jermar 346
        ipc_answer_0(iid, ENOMEM);
2594 cejka 347
        return;
348
    }
349
 
350
    /* Get device name */
2676 jermar 351
    if (!ipc_data_write_receive(&callid, &size)) {
2594 cejka 352
        free(device);
2619 jermar 353
        ipc_answer_0(iid, EREFUSED);
2594 cejka 354
        return;
355
    }
2555 cejka 356
 
2594 cejka 357
    if (size > DEVMAP_NAME_MAXLEN) {
358
        free(device);
2619 jermar 359
        ipc_answer_0(callid, EINVAL);
360
        ipc_answer_0(iid, EREFUSED);
2594 cejka 361
        return;
362
    }
3080 decky 363
 
364
    /* +1 for terminating \0 */
365
    device->name = (char *) malloc(size + 1);
2555 cejka 366
 
2594 cejka 367
    if (NULL == device->name) {
368
        free(device);
2619 jermar 369
        ipc_answer_0(callid, ENOMEM);
370
        ipc_answer_0(iid, EREFUSED);
2594 cejka 371
        return;
2555 cejka 372
    }
2594 cejka 373
 
2678 jermar 374
    ipc_data_write_finalize(callid, device->name, size);
2594 cejka 375
    device->name[size] = 0;
2555 cejka 376
 
2594 cejka 377
    list_initialize(&(device->devices));
378
    list_initialize(&(device->driver_devices));
379
 
380
    futex_down(&devices_list_futex);   
381
 
382
    /* Check that device with such name is not already registered */
383
    if (NULL != devmap_device_find_name(device->name)) {
3080 decky 384
        printf(NAME ": Device '%s' already registered\n", device->name);
2594 cejka 385
        futex_up(&devices_list_futex); 
386
        free(device->name);
387
        free(device);
2619 jermar 388
        ipc_answer_0(iid, EEXISTS);
2594 cejka 389
        return;
2555 cejka 390
    }
391
 
2594 cejka 392
    /* Get unique device handle */
393
    device->handle = devmap_create_handle();
2555 cejka 394
 
2594 cejka 395
    device->driver = driver;
2555 cejka 396
 
2594 cejka 397
    /* Insert device into list of all devices  */
2619 jermar 398
    list_append(&device->devices, &devices_list);
2594 cejka 399
 
400
    /* Insert device into list of devices that belog to one driver */
2619 jermar 401
    futex_down(&device->driver->devices_futex);
2594 cejka 402
 
2619 jermar 403
    list_append(&device->driver_devices, &device->driver->devices);
2594 cejka 404
 
2619 jermar 405
    futex_up(&device->driver->devices_futex);  
2594 cejka 406
    futex_up(&devices_list_futex); 
407
 
2619 jermar 408
    ipc_answer_1(iid, EOK, device->handle);
2555 cejka 409
}
410
 
2594 cejka 411
/**
412
 *
413
 */
414
static int devmap_device_unregister(ipc_callid_t iid, ipc_call_t *icall,
2619 jermar 415
    devmap_driver_t *driver)
2555 cejka 416
{
2594 cejka 417
    /* TODO */
418
 
2555 cejka 419
    return EOK;
420
}
421
 
2594 cejka 422
/** Connect client to the device.
423
 * Find device driver owning requested device and forward
424
 * the message to it.
2547 cejka 425
 */
2594 cejka 426
static void devmap_forward(ipc_callid_t callid, ipc_call_t *call)
427
{
428
    devmap_device_t *dev;
429
    int handle;
430
 
431
    /*
432
     * Get handle from request
433
     */
2635 cejka 434
    handle = IPC_GET_ARG2(*call);
2594 cejka 435
    dev = devmap_device_find_handle(handle);
436
 
437
    if (NULL == dev) {
2619 jermar 438
        ipc_answer_0(callid, ENOENT);
2594 cejka 439
        return;
440
    }
441
 
2598 jermar 442
    ipc_forward_fast(callid, dev->driver->phone, (ipcarg_t)(dev->handle),
2635 cejka 443
        IPC_GET_ARG3(*call), 0, IPC_FF_NONE);
2594 cejka 444
}
445
 
446
/** Find handle for device instance identified by name.
447
 * In answer will be send EOK and device handle in arg1 or a error
448
 * code from errno.h.
449
 */
450
static void devmap_get_handle(ipc_callid_t iid, ipc_call_t *icall)
451
{
452
    char *name = NULL;
453
    size_t name_size;
454
    const devmap_device_t *dev;
455
    ipc_callid_t callid;
456
    ipcarg_t retval;
457
 
458
    /*
459
     * Wait for incoming message with device name (but do not
460
     * read the name itself until the buffer is allocated).
461
     */
2676 jermar 462
    if (!ipc_data_write_receive(&callid, &name_size)) {
2619 jermar 463
        ipc_answer_0(callid, EREFUSED);
464
        ipc_answer_0(iid, EREFUSED);
2594 cejka 465
        return;
466
    }
467
 
468
    if (name_size > DEVMAP_NAME_MAXLEN) {
2619 jermar 469
        ipc_answer_0(callid, EINVAL);
470
        ipc_answer_0(iid, EREFUSED);
2594 cejka 471
        return;
472
    }
473
 
474
    /*
475
     * Allocate buffer for device name.
476
     */
477
    if (NULL == (name = (char *)malloc(name_size))) {
2619 jermar 478
        ipc_answer_0(callid, ENOMEM);
479
        ipc_answer_0(iid, EREFUSED);
2594 cejka 480
        return;
481
    }  
482
 
483
    /*
484
     * Send confirmation to sender and get data into buffer.
485
     */
2678 jermar 486
    if (EOK != (retval = ipc_data_write_finalize(callid, name,
487
        name_size))) {
2619 jermar 488
        ipc_answer_0(iid, EREFUSED);
2594 cejka 489
        return;
490
    }
491
 
492
    /*
493
     * Find device name in linked list of known devices.
494
     */
495
    dev = devmap_device_find_name(name);
496
 
497
    /*
498
     * Device was not found.
499
     */
500
    if (NULL == dev) {
2619 jermar 501
        ipc_answer_0(iid, ENOENT);
2594 cejka 502
        return;
503
    }
504
 
2619 jermar 505
    ipc_answer_1(iid, EOK, dev->handle);
2594 cejka 506
}
507
 
508
/** Find name of device identified by id and send it to caller.
509
 *
510
 */
511
static void devmap_get_name(ipc_callid_t iid, ipc_call_t *icall)
512
{
513
    const devmap_device_t *device;
514
    size_t name_size;
515
 
516
    device = devmap_device_find_handle(IPC_GET_ARG1(*icall));
517
 
518
    /*
519
     * Device not found.
520
     */
521
    if (NULL == device) {
2619 jermar 522
        ipc_answer_0(iid, ENOENT);
2594 cejka 523
        return;
524
    }  
525
 
2619 jermar 526
    ipc_answer_0(iid, EOK);
2594 cejka 527
 
528
    name_size = strlen(device->name);
529
 
530
 
531
/*  FIXME:
2619 jermar 532
    we have no channel from DEVMAP to client ->
2594 cejka 533
    sending must be initiated by client
534
 
2660 jermar 535
    int rc = ipc_data_write_send(phone, device->name, name_size);
2594 cejka 536
    if (rc != EOK) {
537
        async_wait_for(req, NULL);
538
        return rc;
539
    }
540
*/ 
541
    /* TODO: send name in response */
542
}
543
 
544
/** Handle connection with device driver.
545
 *
546
 */
3080 decky 547
static void devmap_connection_driver(ipc_callid_t iid, ipc_call_t *icall)
2547 cejka 548
{
549
    ipc_callid_t callid;
550
    ipc_call_t call;
2555 cejka 551
    bool cont = true;
2594 cejka 552
    devmap_driver_t *driver = NULL;
2547 cejka 553
 
2619 jermar 554
    ipc_answer_0(iid, EOK);
2555 cejka 555
 
2594 cejka 556
    devmap_driver_register(&driver);
2547 cejka 557
 
3080 decky 558
    if (NULL == driver)
2594 cejka 559
        return;
560
 
2555 cejka 561
    while (cont) {
2547 cejka 562
        callid = async_get_call(&call);
563
 
564
        switch (IPC_GET_METHOD(call)) {
565
        case IPC_M_PHONE_HUNGUP:
2555 cejka 566
            cont = false;
567
            continue; /* Exit thread */
2594 cejka 568
        case DEVMAP_DRIVER_UNREGISTER:
569
            if (NULL == driver) {
2619 jermar 570
                ipc_answer_0(callid, ENOENT);
2594 cejka 571
            } else {
2619 jermar 572
                ipc_answer_0(callid, EOK);
2555 cejka 573
            }
574
            break;
2594 cejka 575
        case DEVMAP_DEVICE_REGISTER:
576
            /* Register one instance of device */
577
            devmap_device_register(callid, &call, driver);
2555 cejka 578
            break;
2594 cejka 579
        case DEVMAP_DEVICE_UNREGISTER:
580
            /* Remove instance of device identified by handler */
581
            devmap_device_unregister(callid, &call, driver);
582
            break;
583
        case DEVMAP_DEVICE_GET_HANDLE:
584
            devmap_get_handle(callid, &call);
585
            break;
586
        case DEVMAP_DEVICE_GET_NAME:
587
            devmap_get_handle(callid, &call);
588
            break;
589
        default:
590
            if (!(callid & IPC_CALLID_NOTIFICATION)) {
2619 jermar 591
                ipc_answer_0(callid, ENOENT);
2594 cejka 592
            }
593
        }
594
    }
595
 
596
    if (NULL != driver) {
2619 jermar 597
        /*
598
         * Unregister the device driver and all its devices.
599
         */
2594 cejka 600
        devmap_driver_unregister(driver);
601
        driver = NULL;
602
    }
603
 
604
}
605
 
606
/** Handle connection with device client.
607
 *
608
 */
3080 decky 609
static void devmap_connection_client(ipc_callid_t iid, ipc_call_t *icall)
2594 cejka 610
{
611
    ipc_callid_t callid;
612
    ipc_call_t call;
613
    bool cont = true;
614
 
2619 jermar 615
    ipc_answer_0(iid, EOK); /* Accept connection */
2594 cejka 616
 
617
    while (cont) {
618
        callid = async_get_call(&call);
619
 
620
        switch (IPC_GET_METHOD(call)) {
621
        case IPC_M_PHONE_HUNGUP:
2555 cejka 622
            cont = false;
2594 cejka 623
            continue; /* Exit thread */
624
 
625
        case DEVMAP_DEVICE_GET_HANDLE:
626
            devmap_get_handle(callid, &call);
627
 
2555 cejka 628
            break;
2594 cejka 629
        case DEVMAP_DEVICE_GET_NAME:
630
            /* TODO */
631
            devmap_get_name(callid, &call);
632
            break;
2547 cejka 633
        default:
2594 cejka 634
            if (!(callid & IPC_CALLID_NOTIFICATION)) {
2619 jermar 635
                ipc_answer_0(callid, ENOENT);
2594 cejka 636
            }
2547 cejka 637
        }
638
    }
2594 cejka 639
}
640
 
641
/** Function for handling connections to devmap
642
 *
643
 */
3080 decky 644
static void devmap_connection(ipc_callid_t iid, ipc_call_t *icall)
2594 cejka 645
{
3080 decky 646
    /* Select interface */
647
    switch ((ipcarg_t) (IPC_GET_ARG1(*icall))) {
2598 jermar 648
    case DEVMAP_DRIVER:
649
        devmap_connection_driver(iid, icall);
650
        break;
651
    case DEVMAP_CLIENT:
652
        devmap_connection_client(iid, icall);
653
        break;
2635 cejka 654
    case DEVMAP_CONNECT_TO_DEVICE:
3080 decky 655
        /* Connect client to selected device */
2635 cejka 656
        devmap_forward(iid, icall);
657
        break;
2598 jermar 658
    default:
2619 jermar 659
        ipc_answer_0(iid, ENOENT); /* No such interface */
2594 cejka 660
    }
661
 
662
    /* Cleanup */
2547 cejka 663
}
664
 
2594 cejka 665
/**
666
 *
667
 */
2547 cejka 668
int main(int argc, char *argv[])
669
{
3080 decky 670
    printf(NAME ": HelenOS Device Mapper\n");
671
 
2547 cejka 672
    ipcarg_t phonead;
673
 
674
    if (devmap_init() != 0) {
3080 decky 675
        printf(NAME ": Error while initializing service\n");
2547 cejka 676
        return -1;
677
    }
3080 decky 678
 
679
    /* Set a handler of incomming connections */
2594 cejka 680
    async_set_client_connection(devmap_connection);
2547 cejka 681
 
2598 jermar 682
    /* Register device mapper at naming service */
2637 cejka 683
    if (ipc_connect_to_me(PHONE_NS, SERVICE_DEVMAP, 0, 0, &phonead) != 0)
2547 cejka 684
        return -1;
685
 
3080 decky 686
    printf(NAME ": Accepting connections\n");
2547 cejka 687
    async_manager();
688
    /* Never reached */
689
    return 0;
690
}
691
 
692
/**
693
 * @}
694
 */