git.zerfleddert.de Git - usb-driver/blob - 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 <usb.h>
  37 #include <signal.h>
  38 #include <pthread.h>
  39 #include <errno.h>
  40 #include <inttypes.h>
  41 #include <sys/ioctl.h>
  42 #include <sys/utsname.h>
  43 #include <bits/wordsize.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 windrvrfd = -1;
  50 static unsigned long ppbase = 0;
  51 static unsigned long ecpbase = 0;
  52 static struct parport_config *pport = NULL;
  53 static struct xpcu_s *xpcu = NULL;
  54 static FILE *modulesfp = NULL;
  55 static FILE *baseaddrfp = NULL;
  56 static int baseaddrnum = 0;
  57 static int modules_read = 0;
  58 static int ints_enabled = 0;
  59 static pthread_mutex_t int_wait = PTHREAD_MUTEX_INITIALIZER;
  60
  61 #define NO_WINDRVR 1
  62
  63 void hexdump(unsigned char *buf, int len) {
  64         int i;
  65
  66         for(i=0; i<len; i++) {
  67                 fprintf(stderr,"%02x ", buf[i]);
  68                 if ((i % 16) == 15)
  69                         fprintf(stderr,"\n");
  70         }
  71         fprintf(stderr,"\n");
  72 }
  73
  74
  75 static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
  76         struct header_struct* wdheader = (struct header_struct*)wdioctl;
  77         struct version_struct *version;
  78         int ret = 0;
  79
  80         if (wdheader->magic != MAGIC) {
  81                 fprintf(stderr,"!!!ERROR: magic header does not match!!!\n");
  82                 return (*ioctl_func) (fd, request, wdioctl);
  83         }
  84
  85         switch(request & ~(0xc0000000)) {
  86                 case VERSION:
  87                         version = (struct version_struct*)(wdheader->data);
  88                         strcpy(version->version, "libusb-driver.so version: " USB_DRIVER_VERSION);
  89                         version->versionul = 802;
  90                         DPRINTF("VERSION\n");
  91                         break;
  92
  93                 case LICENSE:
  94                         DPRINTF("LICENSE\n");
  95                         break;
  96
  97                 case CARD_REGISTER_OLD:
  98                 case CARD_REGISTER:
  99                         DPRINTF("CARD_REGISTER\n");
 100                         {
 101                                 struct card_register* cr = (struct card_register*)(wdheader->data);
 102
 103                                 DPRINTF("Items: %lu, Addr: 0x%lx, bytes: %lu, bar: %lu\n",
 104                                 cr->Card.dwItems,
 105                                 (unsigned long)cr->Card.Item[0].I.IO.dwAddr,
 106                                 cr->Card.Item[0].I.IO.dwBytes,
 107                                 cr->Card.Item[0].I.IO.dwBar);
 108
 109                                 DPRINTF("Items: %lu, Addr: 0x%lx, bytes: %lu, bar: %lu\n",
 110                                 cr->Card.dwItems,
 111                                 (unsigned long)cr->Card.Item[1].I.IO.dwAddr,
 112                                 cr->Card.Item[1].I.IO.dwBytes,
 113                                 cr->Card.Item[1].I.IO.dwBar);
 114 #ifndef NO_WINDRVR
 115                                 ret = (*ioctl_func) (fd, request, wdioctl);
 116 #else
 117
 118                                 pport = config_get((unsigned long)cr->Card.Item[0].I.IO.dwAddr / 0x10);
 119                                 if (!pport)
 120                                         break;
 121
 122                                 ret = pport->open((unsigned long)cr->Card.Item[0].I.IO.dwAddr / 0x10);
 123
 124                                 ppbase = (unsigned long)cr->Card.Item[0].I.IO.dwAddr;
 125
 126                                 if (cr->Card.dwItems > 1 && cr->Card.Item[1].I.IO.dwAddr)
 127                                         ecpbase = (unsigned long)cr->Card.Item[1].I.IO.dwAddr;
 128
 129                                 if (ret >= 0) {
 130                                         cr->hCard = ret;
 131                                 } else {
 132                                         cr->hCard = 0;
 133                                 }
 134 #endif
 135                                 DPRINTF("hCard: %lu\n", cr->hCard);
 136                         }
 137                         break;
 138
 139                 case USB_TRANSFER:
 140                         DPRINTF("in USB_TRANSFER");
 141                         {
 142                                 struct usb_transfer *ut = (struct usb_transfer*)(wdheader->data);
 143
 144 #ifdef DEBUG
 145                                 DPRINTF(" unique: 0x%lx, pipe: %lu, read: %lu, options: %lx, size: %lu, timeout: %lx\n",
 146                                 ut->dwUniqueID, ut->dwPipeNum, ut->fRead,
 147                                 ut->dwOptions, ut->dwBufferSize, ut->dwTimeout);
 148                                 if (ut->dwPipeNum == 0) {
 149                                         DPRINTF("setup packet: ");
 150                                         hexdump(ut->SetupPacket, 8);
 151                                 }
 152
 153                                 if (!ut->fRead && ut->dwBufferSize)
 154                                 {
 155                                         hexdump(ut->pBuffer, ut->dwBufferSize);
 156                                 }
 157 #endif
 158
 159 #ifndef NO_WINDRVR
 160                                 ret = (*ioctl_func) (fd, request, wdioctl);
 161 #else
 162                                 xpcu_transfer(xpcu, ut);
 163 #endif
 164
 165 #ifdef DEBUG
 166                                 DPRINTF("Transferred: %lu (%s)\n",ut->dwBytesTransferred, (ut->fRead?"read":"write"));
 167                                 if (ut->fRead && ut->dwBytesTransferred)
 168                                 {
 169                                         DPRINTF("Read: ");
 170                                         hexdump(ut->pBuffer, ut->dwBytesTransferred);
 171                                 }
 172 #endif
 173                         }
 174                         break;
 175
 176                 case INT_ENABLE_OLD:
 177                 case INT_ENABLE:
 178                         DPRINTF("INT_ENABLE\n");
 179                         {
 180                                 struct interrupt *it = (struct interrupt*)(wdheader->data);
 181
 182                                 DPRINTF("Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n",
 183                                 it->hInterrupt, it->dwOptions,
 184                                 it->dwCmds, it->fEnableOk, it->dwCounter,
 185                                 it->dwLost, it->fStopped);
 186
 187                                 it->fEnableOk = 1;
 188                                 it->fStopped = 0;
 189                                 ints_enabled = 1;
 190                                 pthread_mutex_trylock(&int_wait);
 191                         }
 192
 193                         break;
 194
 195                 case INT_DISABLE:
 196                         DPRINTF("INT_DISABLE\n");
 197                         {
 198                                 struct interrupt *it = (struct interrupt*)(wdheader->data);
 199
 200                                 DPRINTF("Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n",
 201                                 it->hInterrupt, it->dwOptions,
 202                                 it->dwCmds, it->fEnableOk, it->dwCounter,
 203                                 it->dwLost, it->fStopped);
 204 #ifndef NO_WINDRVR
 205                                 ret = (*ioctl_func) (fd, request, wdioctl);
 206 #else
 207                                 it->dwCounter = 0;
 208                                 it->fStopped = 1;
 209                                 ints_enabled = 0;
 210                                 if (pthread_mutex_trylock(&int_wait) == EBUSY)
 211                                         pthread_mutex_unlock(&int_wait);
 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                                 xpcu_set_interface(xpcu, 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                                 ugdd->dwBytes = xpcu_deviceinfo(xpcu, 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                                 xpcu = xpcu_find(e);
 273 #ifndef NO_WINDRVR
 274                                 ret = (*ioctl_func) (fd, request, wdioctl);
 275 #else
 276                                 e->handle = (unsigned long)xpcu;
 277 #endif
 278
 279 #ifdef DEBUG
 280                                 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",
 281                                 e->handle, e->dwAction,
 282                                 e->dwStatus, e->dwEventId, e->dwCardType,
 283                                 e->hKernelPlugIn, e->dwOptions,
 284                                 e->u.Usb.deviceId.dwVendorId,
 285                                 e->u.Usb.deviceId.dwProductId,
 286                                 e->u.Usb.dwUniqueID, e->dwEventVer,
 287                                 e->dwNumMatchTables);
 288
 289                                 for (i = 0; i < e->dwNumMatchTables; i++)
 290                                         DPRINTF("match: dev: %04x:%04x, class: %x, subclass: %x, intclass: %x, intsubclass: %x, intproto: %x\n",
 291                                         e->matchTables[i].VendorId,
 292                                         e->matchTables[i].ProductId,
 293                                         e->matchTables[i].bDeviceClass,
 294                                         e->matchTables[i].bDeviceSubClass,
 295                                         e->matchTables[i].bInterfaceClass,
 296                                         e->matchTables[i].bInterfaceSubClass,
 297                                         e->matchTables[i].bInterfaceProtocol);
 298 #endif
 299                         }
 300                         break;
 301
 302                 case TRANSFER_OLD:
 303                 case TRANSFER:
 304                         DPRINTF("TRANSFER\n");
 305                         {
 306                                 WD_TRANSFER *tr = (WD_TRANSFER*)(wdheader->data);
 307
 308 #ifndef NO_WINDRVR
 309                                 ret = (*ioctl_func) (fd, request, wdioctl);
 310 #else
 311                                 ret = pport->transfer(tr, fd, request, ppbase, ecpbase, 1);
 312 #endif
 313                         }
 314                         break;
 315
 316                 case MULTI_TRANSFER_OLD:
 317                 case MULTI_TRANSFER:
 318                         DPRINTF("MULTI_TRANSFER\n");
 319                         {
 320                                 WD_TRANSFER *tr = (WD_TRANSFER*)(wdheader->data);
 321                                 unsigned long num = wdheader->size/sizeof(WD_TRANSFER);
 322 #ifndef NO_WINDRVR
 323                                 ret = (*ioctl_func) (fd, request, wdioctl);
 324 #else
 325                                 ret = pport->transfer(tr, fd, request, ppbase, ecpbase, num);
 326 #endif
 327                         }
 328                         break;
 329
 330                 case EVENT_UNREGISTER:
 331                         {
 332                                 struct event *e = (struct event*)(wdheader->data);
 333
 334                                 DPRINTF("EVENT_UNREGISTER\n");
 335 #ifndef NO_WINDRVR
 336                                 ret = (*ioctl_func) (fd, request, wdioctl);
 337 #else
 338                                 xpcu_close(xpcu, e);
 339 #endif
 340                         }
 341                         break;
 342
 343                 case INT_WAIT:
 344                         DPRINTF("INT_WAIT\n");
 345                         {
 346                                 struct interrupt *it = (struct interrupt*)(wdheader->data);
 347
 348                                 DPRINTF("Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n",
 349                                 it->hInterrupt, it->dwOptions,
 350                                 it->dwCmds, it->fEnableOk, it->dwCounter,
 351                                 it->dwLost, it->fStopped);
 352
 353 #ifndef NO_WINDRVR
 354                                 ret = (*ioctl_func) (fd, request, wdioctl);
 355 #else
 356                                 if (xpcu) {
 357                                         if (it->dwCounter == 0) {
 358                                                 it->dwCounter = 1;
 359                                         } else {
 360                                                 pthread_mutex_lock(&int_wait);
 361                                                 pthread_mutex_unlock(&int_wait);
 362                                         }
 363                                 } else {
 364                                         pthread_mutex_lock(&int_wait);
 365                                         pthread_mutex_unlock(&int_wait);
 366                                 }
 367 #endif
 368
 369                                 DPRINTF("INT_WAIT_RETURN: Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n",
 370                                 it->hInterrupt, it->dwOptions, it->dwCmds,
 371                                 it->fEnableOk, it->dwCounter, it->dwLost,
 372                                 it->fStopped);
 373                         }
 374                         break;
 375
 376                 case CARD_UNREGISTER:
 377                         DPRINTF("CARD_UNREGISTER\n");
 378                         {
 379                                 struct card_register* cr = (struct card_register*)(wdheader->data);
 380
 381                                 DPRINTF("Addr: 0x%lx, bytes: %lu, bar: %lu\n",
 382                                 (unsigned long)cr->Card.Item[0].I.IO.dwAddr,
 383                                 cr->Card.Item[0].I.IO.dwBytes,
 384                                 cr->Card.Item[0].I.IO.dwBar);
 385
 386                                 DPRINTF("hCard: %lu\n", cr->hCard);
 387
 388 #ifndef NO_WINDRVR
 389                                 ret = (*ioctl_func) (fd, request, wdioctl);
 390 #else
 391                                 if (pport)
 392                                         pport->close(cr->hCard);
 393
 394                                 pport = NULL;
 395 #endif
 396                         }
 397                         break;
 398
 399                 case EVENT_PULL:
 400                         DPRINTF("EVENT_PULL\n");
 401                         {
 402                                 struct event *e = (struct event*)(wdheader->data);
 403 #ifdef DEBUG
 404                                 int i;
 405
 406                                 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",
 407                                 e->handle, e->dwAction, e->dwStatus,
 408                                 e->dwEventId, e->dwCardType, e->hKernelPlugIn,
 409                                 e->dwOptions, e->u.Usb.deviceId.dwVendorId,
 410                                 e->u.Usb.deviceId.dwProductId,
 411                                 e->u.Usb.dwUniqueID, e->dwEventVer,
 412                                 e->dwNumMatchTables);
 413
 414                                 for (i = 0; i < e->dwNumMatchTables; i++)
 415                                         DPRINTF("match: dev: %04x:%04x, class: %x, subclass: %x, intclass: %x, intsubclass: %x, intproto: %x\n",
 416                                         e->matchTables[i].VendorId,
 417                                         e->matchTables[i].ProductId,
 418                                         e->matchTables[i].bDeviceClass,
 419                                         e->matchTables[i].bDeviceSubClass,
 420                                         e->matchTables[i].bInterfaceClass,
 421                                         e->matchTables[i].bInterfaceSubClass,
 422                                         e->matchTables[i].bInterfaceProtocol);
 423 #endif
 424
 425 #ifndef NO_WINDRVR
 426                                 ret = (*ioctl_func) (fd, request, wdioctl);
 427 #else
 428                                 xpcu_found(xpcu, e);
 429 #endif
 430
 431 #ifdef DEBUG
 432                                 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",
 433                                 e->handle, e->dwAction, e->dwStatus,
 434                                 e->dwEventId, e->dwCardType, e->hKernelPlugIn,
 435                                 e->dwOptions, e->u.Usb.deviceId.dwVendorId,
 436                                 e->u.Usb.deviceId.dwProductId,
 437                                 e->u.Usb.dwUniqueID, e->dwEventVer,
 438                                 e->dwNumMatchTables);
 439
 440                                 for (i = 0; i < e->dwNumMatchTables; i++)
 441                                         DPRINTF("match: dev: %04x:%04x, class: %x, subclass: %x, intclass: %x, intsubclass: %x, intproto: %x\n",
 442                                         e->matchTables[i].VendorId,
 443                                         e->matchTables[i].ProductId,
 444                                         e->matchTables[i].bDeviceClass,
 445                                         e->matchTables[i].bDeviceSubClass,
 446                                         e->matchTables[i].bInterfaceClass,
 447                                         e->matchTables[i].bInterfaceSubClass,
 448                                         e->matchTables[i].bInterfaceProtocol);
 449 #endif
 450
 451                         }
 452                         break;
 453
 454                 default:
 455                         fprintf(stderr,"!!!Unsupported IOCTL: %x!!!\n", request);
 456 #ifndef NO_WINDRVR
 457                         ret = (*ioctl_func) (fd, request, wdioctl);
 458 #endif
 459                         break;
 460         }
 461
 462         return ret;
 463 }
 464
 465 int ioctl(int fd, unsigned long int request, ...) {
 466         va_list args;
 467         void *argp;
 468         int ret;
 469
 470         if (!ioctl_func)
 471                 ioctl_func = (int (*) (int, int, void *)) dlsym (RTLD_NEXT, "ioctl");
 472
 473         va_start (args, request);
 474         argp = va_arg (args, void *);
 475         va_end (args);
 476
 477         if (fd == windrvrfd)
 478                 ret = do_wdioctl(fd, request, argp);
 479         else
 480                 ret = (*ioctl_func) (fd, request, argp);
 481
 482         return ret;
 483 }
 484
 485 int open (const char *pathname, int flags, ...) {
 486         static int (*func) (const char *, int, mode_t) = NULL;
 487         mode_t mode = 0;
 488         va_list args;
 489         int fd;
 490
 491         if (!func)
 492                 func = (int (*) (const char *, int, mode_t)) dlsym (RTLD_NEXT, "open");
 493
 494         if (flags & O_CREAT) {
 495                 va_start(args, flags);
 496                 mode = va_arg(args, mode_t);
 497                 va_end(args);
 498         }
 499
 500         if (!strcmp (pathname, "/dev/windrvr6")) {
 501                 DPRINTF("opening windrvr6\n");
 502 #ifdef NO_WINDRVR
 503                 windrvrfd = fd = (*func) ("/dev/null", flags, mode);
 504 #else
 505                 windrvrfd = fd = (*func) (pathname, flags, mode);
 506 #endif
 507
 508                 return fd;
 509         }
 510
 511         return (*func) (pathname, flags, mode);
 512 }
 513
 514 int close(int fd) {
 515         static int (*func) (int) = NULL;
 516
 517         if (!func)
 518                 func = (int (*) (int)) dlsym(RTLD_NEXT, "close");
 519
 520         if (fd == windrvrfd && windrvrfd >= 0) {
 521                 DPRINTF("close windrvrfd\n");
 522
 523                 xpcu = NULL;
 524                 windrvrfd = -1;
 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 #ifdef NO_WINDRVR
 563                 modulesfp = ret;
 564                 modules_read = 0;
 565 #endif
 566         }
 567
 568         return ret;
 569 }
 570
 571 char *fgets(char *s, int size, FILE *stream) {
 572         static char* (*func) (char*, int, FILE*) = NULL;
 573         const char modules[][256] = {"windrvr6 1 0 - Live 0xdeadbeef\n", "parport_pc 1 0 - Live 0xdeadbeef\n"};
 574         char buf[256];
 575         char *ret = NULL;
 576
 577
 578         if (!func)
 579                 func = (char* (*) (char*, int, FILE*)) dlsym(RTLD_NEXT, "fgets");
 580
 581         if (modulesfp == stream) {
 582                 if (modules_read < sizeof(modules) / sizeof(modules[0])) {
 583                         strcpy(s, modules[modules_read]);
 584                         ret = s;
 585                         modules_read++;
 586                 }
 587         } else if (baseaddrfp == stream) {
 588                 snprintf(s, sizeof(buf), "%d\t%d\n",
 589                         (baseaddrnum) * 0x10,
 590                         ((baseaddrnum) * 0x10) + 0x400);
 591                 ret = s;
 592         } else {
 593                 ret = (*func)(s,size,stream);
 594         }
 595
 596         return ret;
 597 }
 598
 599 int fclose(FILE *fp) {
 600         static int (*func) (FILE*) = NULL;
 601
 602         if (!func)
 603                 func = (int (*) (FILE*)) dlsym(RTLD_NEXT, "fclose");
 604
 605         if (fp == modulesfp) {
 606                 modulesfp = NULL;
 607         }
 608
 609         if (fp == baseaddrfp) {
 610                 baseaddrfp = NULL;
 611         }
 612
 613         return (*func)(fp);
 614 }
 615
 616 int access(const char *pathname, int mode) {
 617         static int (*func) (const char*, int);
 618
 619         if (!func)
 620                 func = (int (*) (const char*, int)) dlsym(RTLD_NEXT, "access");
 621
 622         if (pathname && !strcmp(pathname, "/dev/windrvr6")) {
 623                 return 0;
 624         } else {
 625                 return (*func)(pathname, mode);
 626         }
 627 }
 628
 629 #if __WORDSIZE == 32
 630 int uname (struct utsname *__name) {
 631         static int (*func) (struct utsname*);
 632         int ret;
 633
 634         if (!func)
 635                 func = (int (*) (struct utsname*)) dlsym(RTLD_NEXT, "uname");
 636
 637         ret = (*func)(__name);
 638
 639         if (ret == 0 && (!strcmp(__name->machine, "x86_64"))) {
 640                 strcpy(__name->machine, "i686");
 641         }
 642
 643         return ret;
 644 }
 645 #endif