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[usb-driver] / usb-driver.c
1 /* libusb/ppdev connector for XILINX impact
2 *
3 * Copyright (c) 2007 Michael Gernoth <michael@gernoth.net>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to
7 * deal in the Software without restriction, including without limitation the
8 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
9 * sell copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #define _GNU_SOURCE 1
25
26 #include <dlfcn.h>
27 #include <stdarg.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <unistd.h>
31 #include <fcntl.h>
32 #include <sys/types.h>
33 #include <sys/stat.h>
34 #include <sys/time.h>
35 #include <stdio.h>
36 #include <signal.h>
37 #include <errno.h>
38 #include <inttypes.h>
39 #include <sys/ioctl.h>
40 #include <sys/utsname.h>
41 #include <bits/wordsize.h>
42 #include <sys/ipc.h>
43 #include <sys/sem.h>
44 #include "usb-driver.h"
45 #include "config.h"
46 #include "xpcu.h"
47
48 static int (*ioctl_func) (int, int, void *) = NULL;
49 static int *windrvrfds = NULL;
50 static int windrvrfds_count = 0;
51 static unsigned long ppbase = 0;
52 static unsigned long ecpbase = 0;
53 static struct parport_config *pport = NULL;
54 static FILE *modulesfp = NULL;
55 static FILE *baseaddrfp = NULL;
56 static int baseaddrnum = 0;
57 static int modules_read = 0;
58
59 #define NO_WINDRVR 1
60
61 void hexdump(unsigned char *buf, int len, char *prefix) {
62 int i;
63
64 fprintf(stderr, "%s ", prefix);
65 for(i=0; i<len; i++) {
66 fprintf(stderr,"%02x ", buf[i]);
67 if ((i % 16) == 15)
68 fprintf(stderr,"\n%s ", prefix);
69 }
70 fprintf(stderr,"\n");
71 }
72
73
74 static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
75 struct header_struct* wdheader = (struct header_struct*)wdioctl;
76 struct version_struct *version;
77 int ret = 0;
78
79 if (wdheader->magic != MAGIC) {
80 fprintf(stderr,"!!!ERROR: magic header does not match!!!\n");
81 return (*ioctl_func) (fd, request, wdioctl);
82 }
83
84 switch(request & ~(0xc0000000)) {
85 case VERSION:
86 version = (struct version_struct*)(wdheader->data);
87 strcpy(version->version, "libusb-driver.so version: " USB_DRIVER_VERSION);
88 version->versionul = 802;
89 DPRINTF("VERSION\n");
90 break;
91
92 case LICENSE:
93 DPRINTF("LICENSE\n");
94 break;
95
96 case CARD_REGISTER_OLD:
97 case CARD_REGISTER:
98 DPRINTF("CARD_REGISTER\n");
99 {
100 struct card_register* cr = (struct card_register*)(wdheader->data);
101
102 DPRINTF("-> Items: %lu, Addr: 0x%lx, bytes: %lu, bar: %lu\n",
103 cr->Card.dwItems,
104 (unsigned long)cr->Card.Item[0].I.IO.dwAddr,
105 cr->Card.Item[0].I.IO.dwBytes,
106 cr->Card.Item[0].I.IO.dwBar);
107
108 DPRINTF("-> Items: %lu, Addr: 0x%lx, bytes: %lu, bar: %lu\n",
109 cr->Card.dwItems,
110 (unsigned long)cr->Card.Item[1].I.IO.dwAddr,
111 cr->Card.Item[1].I.IO.dwBytes,
112 cr->Card.Item[1].I.IO.dwBar);
113 #ifndef NO_WINDRVR
114 ret = (*ioctl_func) (fd, request, wdioctl);
115 #else
116
117 pport = config_get((unsigned long)cr->Card.Item[0].I.IO.dwAddr / 0x10);
118 if (!pport)
119 break;
120
121 ret = pport->open((unsigned long)cr->Card.Item[0].I.IO.dwAddr / 0x10);
122
123 ppbase = (unsigned long)cr->Card.Item[0].I.IO.dwAddr;
124
125 if (cr->Card.dwItems > 1 && cr->Card.Item[1].I.IO.dwAddr)
126 ecpbase = (unsigned long)cr->Card.Item[1].I.IO.dwAddr;
127
128 if (ret >= 0) {
129 cr->hCard = ret;
130 } else {
131 cr->hCard = 0;
132 }
133 #endif
134 DPRINTF("<-hCard: %lu\n", cr->hCard);
135 }
136 break;
137
138 case USB_TRANSFER:
139 DPRINTF("USB_TRANSFER\n");
140 {
141 struct usb_transfer *ut = (struct usb_transfer*)(wdheader->data);
142
143 #ifdef DEBUG
144 DPRINTF("-> unique: 0x%lx, pipe: %lu, read: %lu, options: %lx, size: %lu, timeout: %lx\n",
145 ut->dwUniqueID, ut->dwPipeNum, ut->fRead,
146 ut->dwOptions, ut->dwBufferSize, ut->dwTimeout);
147 if (ut->dwPipeNum == 0) {
148 DPRINTF("-> setup packet:");
149 hexdump(ut->SetupPacket, 8, "");
150 }
151
152 if (!ut->fRead && ut->dwBufferSize)
153 {
154 hexdump(ut->pBuffer, ut->dwBufferSize, "->");
155 }
156 #endif
157
158 #ifndef NO_WINDRVR
159 ret = (*ioctl_func) (fd, request, wdioctl);
160 #else
161 ret = xpcu_transfer(ut);
162 #endif
163
164 #ifdef DEBUG
165 DPRINTF("Transferred: %lu (%s)\n",ut->dwBytesTransferred, (ut->fRead?"read":"write"));
166 if (ut->fRead && ut->dwBytesTransferred)
167 {
168 hexdump(ut->pBuffer, ut->dwBytesTransferred, "<-");
169 }
170 #endif
171 }
172 break;
173
174 case INT_ENABLE_OLD:
175 case INT_ENABLE:
176 DPRINTF("INT_ENABLE\n");
177 {
178 struct interrupt *it = (struct interrupt*)(wdheader->data);
179
180 DPRINTF("-> Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n",
181 it->hInterrupt, it->dwOptions,
182 it->dwCmds, it->fEnableOk, it->dwCounter,
183 it->dwLost, it->fStopped);
184
185 #ifndef NO_WINDRVR
186 ret = (*ioctl_func) (fd, request, wdioctl);
187 #else
188 ret = xpcu_int_state(it, ENABLE_INTERRUPT);
189 #endif
190
191 DPRINTF("<- Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n",
192 it->hInterrupt, it->dwOptions,
193 it->dwCmds, it->fEnableOk, it->dwCounter,
194 it->dwLost, it->fStopped);
195 }
196
197 break;
198
199 case INT_DISABLE:
200 DPRINTF("INT_DISABLE\n");
201 {
202 struct interrupt *it = (struct interrupt*)(wdheader->data);
203
204 DPRINTF("-> Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n",
205 it->hInterrupt, it->dwOptions,
206 it->dwCmds, it->fEnableOk, it->dwCounter,
207 it->dwLost, it->fStopped);
208 #ifndef NO_WINDRVR
209 ret = (*ioctl_func) (fd, request, wdioctl);
210 #else
211 ret = xpcu_int_state(it, DISABLE_INTERRUPT);
212 #endif
213 DPRINTF("<- Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n",
214 it->hInterrupt, it->dwOptions,
215 it->dwCmds, it->fEnableOk, it->dwCounter,
216 it->dwLost, it->fStopped);
217 }
218 break;
219
220 case USB_SET_INTERFACE:
221 DPRINTF("USB_SET_INTERFACE\n");
222 {
223 struct usb_set_interface *usi = (struct usb_set_interface*)(wdheader->data);
224
225 DPRINTF("-> unique: 0x%lx, interfacenum: %lu, alternatesetting: %lu, options: %lx\n",
226 usi->dwUniqueID, usi->dwInterfaceNum,
227 usi->dwAlternateSetting, usi->dwOptions);
228 #ifndef NO_WINDRVR
229 ret = (*ioctl_func) (fd, request, wdioctl);
230 #else
231 ret = xpcu_set_interface(usi);
232 #endif
233 DPRINTF("<- unique: 0x%lx, interfacenum: %lu, alternatesetting: %lu, options: %lx\n",
234 usi->dwUniqueID, usi->dwInterfaceNum,
235 usi->dwAlternateSetting, usi->dwOptions);
236 }
237 break;
238
239 case USB_GET_DEVICE_DATA_OLD:
240 case USB_GET_DEVICE_DATA:
241 DPRINTF("USB_GET_DEVICE_DATA\n");
242 {
243 struct usb_get_device_data *ugdd = (struct usb_get_device_data*)(wdheader->data);
244
245 DPRINTF("-> unique: 0x%lx, bytes: %lu, options: %lx\n",
246 ugdd->dwUniqueID, ugdd->dwBytes,
247 ugdd->dwOptions);
248
249 ret = xpcu_deviceinfo(ugdd);
250
251 }
252 break;
253
254 case EVENT_REGISTER_OLD:
255 case EVENT_REGISTER:
256 DPRINTF("EVENT_REGISTER\n");
257 {
258 struct event *e = (struct event*)(wdheader->data);
259 #ifdef DEBUG
260 int i;
261 #endif
262
263 DPRINTF("-> handle: 0x%lx, action: %lu, status: %lu, eventid: %lu, cardtype: %lu, kplug: %lu, options: %lu, dev: %lx:%lx, unique: 0x%lx, ver: %lu, nummatch: %lu\n",
264 e->handle, e->dwAction,
265 e->dwStatus, e->dwEventId, e->dwCardType,
266 e->hKernelPlugIn, e->dwOptions,
267 e->u.Usb.deviceId.dwVendorId,
268 e->u.Usb.deviceId.dwProductId,
269 e->u.Usb.dwUniqueID, e->dwEventVer,
270 e->dwNumMatchTables);
271
272 #ifndef NO_WINDRVR
273 ret = (*ioctl_func) (fd, request, wdioctl);
274 #else
275 ret = xpcu_find(e);
276 #endif
277
278 #ifdef DEBUG
279 DPRINTF("<- handle: 0x%lx, action: %lu, status: %lu, eventid: %lu, cardtype: %lu, kplug: %lu, options: %lu, dev: %lx:%lx, unique: 0x%lx, ver: %lu, nummatch: %lu\n",
280 e->handle, e->dwAction,
281 e->dwStatus, e->dwEventId, e->dwCardType,
282 e->hKernelPlugIn, e->dwOptions,
283 e->u.Usb.deviceId.dwVendorId,
284 e->u.Usb.deviceId.dwProductId,
285 e->u.Usb.dwUniqueID, e->dwEventVer,
286 e->dwNumMatchTables);
287
288 for (i = 0; i < e->dwNumMatchTables; i++)
289 DPRINTF("match: dev: %04x:%04x, class: %x, subclass: %x, intclass: %x, intsubclass: %x, intproto: %x\n",
290 e->matchTables[i].VendorId,
291 e->matchTables[i].ProductId,
292 e->matchTables[i].bDeviceClass,
293 e->matchTables[i].bDeviceSubClass,
294 e->matchTables[i].bInterfaceClass,
295 e->matchTables[i].bInterfaceSubClass,
296 e->matchTables[i].bInterfaceProtocol);
297 #endif
298 }
299 break;
300
301 case TRANSFER_OLD:
302 case TRANSFER:
303 DPRINTF("TRANSFER\n");
304 {
305 WD_TRANSFER *tr = (WD_TRANSFER*)(wdheader->data);
306
307 #ifndef NO_WINDRVR
308 ret = (*ioctl_func) (fd, request, wdioctl);
309 #else
310 ret = pport->transfer(tr, fd, request, ppbase, ecpbase, 1);
311 #endif
312 }
313 break;
314
315 case MULTI_TRANSFER_OLD:
316 case MULTI_TRANSFER:
317 DPRINTF("MULTI_TRANSFER\n");
318 {
319 WD_TRANSFER *tr = (WD_TRANSFER*)(wdheader->data);
320 unsigned long num = wdheader->size/sizeof(WD_TRANSFER);
321 #ifndef NO_WINDRVR
322 ret = (*ioctl_func) (fd, request, wdioctl);
323 #else
324 ret = pport->transfer(tr, fd, request, ppbase, ecpbase, num);
325 #endif
326 }
327 break;
328
329 case EVENT_UNREGISTER:
330 {
331 struct event *e = (struct event*)(wdheader->data);
332
333 DPRINTF("EVENT_UNREGISTER\n");
334 #ifndef NO_WINDRVR
335 ret = (*ioctl_func) (fd, request, wdioctl);
336 #else
337 ret = xpcu_close(e);
338 #endif
339 }
340 break;
341
342 case INT_WAIT:
343 DPRINTF("INT_WAIT\n");
344 {
345 struct interrupt *it = (struct interrupt*)(wdheader->data);
346
347 DPRINTF("-> Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n",
348 it->hInterrupt, it->dwOptions,
349 it->dwCmds, it->fEnableOk, it->dwCounter,
350 it->dwLost, it->fStopped);
351
352 #ifndef NO_WINDRVR
353 ret = (*ioctl_func) (fd, request, wdioctl);
354 #else
355 ret = xpcu_int_wait(it);
356 #endif
357
358 DPRINTF("<- INT_WAIT_RETURN: Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n",
359 it->hInterrupt, it->dwOptions, it->dwCmds,
360 it->fEnableOk, it->dwCounter, it->dwLost,
361 it->fStopped);
362 }
363 break;
364
365 case CARD_UNREGISTER:
366 DPRINTF("CARD_UNREGISTER\n");
367 {
368 struct card_register* cr = (struct card_register*)(wdheader->data);
369
370 DPRINTF("-> Addr: 0x%lx, bytes: %lu, bar: %lu\n",
371 (unsigned long)cr->Card.Item[0].I.IO.dwAddr,
372 cr->Card.Item[0].I.IO.dwBytes,
373 cr->Card.Item[0].I.IO.dwBar);
374
375 DPRINTF("-> hCard: %lu\n", cr->hCard);
376
377 #ifndef NO_WINDRVR
378 ret = (*ioctl_func) (fd, request, wdioctl);
379 #else
380 if (pport)
381 pport->close(cr->hCard);
382
383 pport = NULL;
384 #endif
385 }
386 break;
387
388 case EVENT_PULL:
389 DPRINTF("EVENT_PULL\n");
390 {
391 struct event *e = (struct event*)(wdheader->data);
392 #ifdef DEBUG
393 int i;
394
395 DPRINTF("-> handle: 0x%lx, action: %lu, status: %lu, eventid: %lu, cardtype: %lx, kplug: %lu, options: %lu, dev: %lx:%lx, unique: 0x%lx, ver: %lu, nummatch: %lu\n",
396 e->handle, e->dwAction, e->dwStatus,
397 e->dwEventId, e->dwCardType, e->hKernelPlugIn,
398 e->dwOptions, e->u.Usb.deviceId.dwVendorId,
399 e->u.Usb.deviceId.dwProductId,
400 e->u.Usb.dwUniqueID, e->dwEventVer,
401 e->dwNumMatchTables);
402
403 for (i = 0; i < e->dwNumMatchTables; i++)
404 DPRINTF("-> match: dev: %04x:%04x, class: %x, subclass: %x, intclass: %x, intsubclass: %x, intproto: %x\n",
405 e->matchTables[i].VendorId,
406 e->matchTables[i].ProductId,
407 e->matchTables[i].bDeviceClass,
408 e->matchTables[i].bDeviceSubClass,
409 e->matchTables[i].bInterfaceClass,
410 e->matchTables[i].bInterfaceSubClass,
411 e->matchTables[i].bInterfaceProtocol);
412 #endif
413
414 #ifndef NO_WINDRVR
415 ret = (*ioctl_func) (fd, request, wdioctl);
416 #else
417 ret = xpcu_found(e);
418 #endif
419
420 #ifdef DEBUG
421 DPRINTF("<- handle: 0x%lx, action: %lu, status: %lu, eventid: %lu, cardtype: %lx, kplug: %lu, options: %lu, dev: %lx:%lx, unique: 0x%lx, ver: %lu, nummatch: %lu\n",
422 e->handle, e->dwAction, e->dwStatus,
423 e->dwEventId, e->dwCardType, e->hKernelPlugIn,
424 e->dwOptions, e->u.Usb.deviceId.dwVendorId,
425 e->u.Usb.deviceId.dwProductId,
426 e->u.Usb.dwUniqueID, e->dwEventVer,
427 e->dwNumMatchTables);
428
429 for (i = 0; i < e->dwNumMatchTables; i++)
430 DPRINTF("<- match: dev: %04x:%04x, class: %x, subclass: %x, intclass: %x, intsubclass: %x, intproto: %x\n",
431 e->matchTables[i].VendorId,
432 e->matchTables[i].ProductId,
433 e->matchTables[i].bDeviceClass,
434 e->matchTables[i].bDeviceSubClass,
435 e->matchTables[i].bInterfaceClass,
436 e->matchTables[i].bInterfaceSubClass,
437 e->matchTables[i].bInterfaceProtocol);
438 #endif
439
440 }
441 break;
442
443 default:
444 fprintf(stderr,"!!!Unsupported IOCTL: %x!!!\n", request);
445 #ifndef NO_WINDRVR
446 ret = (*ioctl_func) (fd, request, wdioctl);
447 #endif
448 break;
449 }
450
451 return ret;
452 }
453
454 int ioctl(int fd, unsigned long int request, ...) {
455 va_list args;
456 void *argp;
457 int i;
458
459 if (!ioctl_func)
460 ioctl_func = (int (*) (int, int, void *)) dlsym (RTLD_NEXT, "ioctl");
461
462 va_start (args, request);
463 argp = va_arg (args, void *);
464 va_end (args);
465
466 for (i = 0; i < windrvrfds_count; i++) {
467 if (fd == windrvrfds[i])
468 return do_wdioctl(fd, request, argp);
469 }
470
471 return (*ioctl_func) (fd, request, argp);
472 }
473
474 int open (const char *pathname, int flags, ...) {
475 static int (*func) (const char *, int, mode_t) = NULL;
476 mode_t mode = 0;
477 va_list args;
478 int fd;
479
480 if (!func)
481 func = (int (*) (const char *, int, mode_t)) dlsym (RTLD_NEXT, "open");
482
483 if (flags & O_CREAT) {
484 va_start(args, flags);
485 mode = va_arg(args, mode_t);
486 va_end(args);
487 }
488
489 if (!strcmp (pathname, "/dev/windrvr6")) {
490 DPRINTF("opening windrvr6 (%d)\n", windrvrfds_count);
491 windrvrfds = realloc(windrvrfds, sizeof(int) * (++windrvrfds_count));
492 if (!windrvrfds)
493 return -ENOMEM;
494
495 #ifdef NO_WINDRVR
496 windrvrfds[windrvrfds_count-1] = fd = (*func) ("/dev/null", flags, mode);
497 #else
498 windrvrfds[windrvrfds_count-1] = fd = (*func) (pathname, flags, mode);
499 #endif
500
501 return fd;
502 }
503
504 return (*func) (pathname, flags, mode);
505 }
506
507 int close(int fd) {
508 static int (*func) (int) = NULL;
509 int i;
510
511 if (!func)
512 func = (int (*) (int)) dlsym(RTLD_NEXT, "close");
513
514 for (i = 0; i < windrvrfds_count; i++) {
515 if (fd == windrvrfds[i] && windrvrfds[i] >= 0) {
516 int remaining = windrvrfds_count - (i + 1);
517 DPRINTF("close windrvr6 (%d)\n", i);
518 if (remaining)
519 memmove(&(windrvrfds[i]), &(windrvrfds[i+1]), remaining * sizeof(int));
520 windrvrfds = realloc(windrvrfds, sizeof(int) * --windrvrfds_count);
521 if (!windrvrfds_count)
522 windrvrfds = NULL;
523 break;
524 }
525 }
526
527 return (*func) (fd);
528 }
529
530 FILE *fopen(const char *path, const char *mode) {
531 FILE *ret;
532 static FILE* (*func) (const char*, const char*) = NULL;
533 char buf[256];
534 int i;
535
536 if (!func)
537 func = (FILE* (*) (const char*, const char*)) dlsym(RTLD_NEXT, "fopen");
538
539 for (i = 0; i < 4; i++) {
540 snprintf(buf, sizeof(buf), "/proc/sys/dev/parport/parport%d/base-addr", i);
541 if (!strcmp(path, buf)) {
542 DPRINTF("open base-addr of parport%d\n", i);
543 if (config_is_real_pport(i)) {
544 ret = (*func) (path, mode);
545 } else {
546 ret = (*func) ("/dev/null", mode);
547 }
548
549 if (ret) {
550 baseaddrfp = ret;
551 baseaddrnum = i;
552 }
553
554 return ret;
555 }
556 }
557
558 ret = (*func) (path, mode);
559
560 if (!strcmp(path, "/proc/modules")) {
561 DPRINTF("opening /proc/modules\n");
562 if (!ret && errno == ENOENT) {
563 /* Hmm.. there appears to be no /proc/modules file
564 * fake it then */
565 ret = (*func)("/dev/null", mode);
566 DPRINTF("No /proc/modules -- faking\n");
567 }
568 #ifdef NO_WINDRVR
569 modulesfp = ret;
570 modules_read = 0;
571 #endif
572 }
573
574 return ret;
575 }
576
577 char *fgets(char *s, int size, FILE *stream) {
578 static char* (*func) (char*, int, FILE*) = NULL;
579 const char modules[][256] = {"windrvr6 1 0 - Live 0xdeadbeef\n", "parport_pc 1 0 - Live 0xdeadbeef\n"};
580 char buf[256];
581 char *ret = NULL;
582
583
584 if (!func)
585 func = (char* (*) (char*, int, FILE*)) dlsym(RTLD_NEXT, "fgets");
586
587 if (modulesfp == stream) {
588 if (modules_read < sizeof(modules) / sizeof(modules[0])) {
589 strcpy(s, modules[modules_read]);
590 ret = s;
591 modules_read++;
592 }
593 } else if (baseaddrfp == stream) {
594 snprintf(s, sizeof(buf), "%d\t%d\n",
595 (baseaddrnum) * 0x10,
596 ((baseaddrnum) * 0x10) + 0x400);
597 ret = s;
598 } else {
599 ret = (*func)(s,size,stream);
600 }
601
602 return ret;
603 }
604
605 int fclose(FILE *fp) {
606 static int (*func) (FILE*) = NULL;
607
608 if (!func)
609 func = (int (*) (FILE*)) dlsym(RTLD_NEXT, "fclose");
610
611 if (fp == modulesfp) {
612 modulesfp = NULL;
613 }
614
615 if (fp == baseaddrfp) {
616 baseaddrfp = NULL;
617 }
618
619 return (*func)(fp);
620 }
621
622 int access(const char *pathname, int mode) {
623 static int (*func) (const char*, int);
624
625 if (!func)
626 func = (int (*) (const char*, int)) dlsym(RTLD_NEXT, "access");
627
628 if (pathname && !strcmp(pathname, "/dev/windrvr6")) {
629 return 0;
630 } else {
631 return (*func)(pathname, mode);
632 }
633 }
634
635 #if 0
636 /* USB cable sharing needs to overload semop, TODO! */
637 int semop (int __semid, struct sembuf *__sops, size_t __nsops) {
638 static int (*func) (int, struct sembuf*, size_t) = NULL;
639 int i;
640
641 if (!func)
642 func = (int (*) (int, struct sembuf*, size_t)) dlsym(RTLD_NEXT, "semop");
643
644 fprintf(stderr,"semop: semid: 0x%X, elements: %d\n", __semid, __nsops);
645 for (i = 0; i < __nsops; i++) {
646 fprintf(stderr, " num: %u, op: %d, flg: %d\n", __sops[i].sem_num, __sops[i].sem_op, __sops[i].sem_flg);
647 if (__sops[i].sem_op < 0) {
648 fprintf(stderr, "SEMAPHORE LOCK\n");
649 } else {
650 fprintf(stderr, "SEMAPHORE UNLOCK\n");
651 }
652 }
653
654 return (*func)(__semid, __sops, __nsops);
655 }
656 #endif
657
658 #if __WORDSIZE == 32
659 int uname (struct utsname *__name) {
660 static int (*func) (struct utsname*);
661 int ret;
662
663 if (!func)
664 func = (int (*) (struct utsname*)) dlsym(RTLD_NEXT, "uname");
665
666 ret = (*func)(__name);
667
668 if (ret == 0 && (!strcmp(__name->machine, "x86_64"))) {
669 strcpy(__name->machine, "i686");
670 }
671
672 return ret;
673 }
674 #endif
675
676 /* Ugly hack for ISE 12. They don't seem to open /proc/modules with
677 * open() anymore... */
678 int _Z14isModuleLoadedPci(void) {
679 DPRINTF("Faking _Z14isModuleLoadedPci\n");
680
681 return 1;
682 }
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