file2alias.c 21 KB

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  1. /* Simple code to turn various tables in an ELF file into alias definitions.
  2. * This deals with kernel datastructures where they should be
  3. * dealt with: in the kernel source.
  4. *
  5. * Copyright 2002-2003 Rusty Russell, IBM Corporation
  6. * 2003 Kai Germaschewski
  7. *
  8. *
  9. * This software may be used and distributed according to the terms
  10. * of the GNU General Public License, incorporated herein by reference.
  11. */
  12. #include "modpost.h"
  13. /* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
  14. * use either stdint.h or inttypes.h for the rest. */
  15. #if KERNEL_ELFCLASS == ELFCLASS32
  16. typedef Elf32_Addr kernel_ulong_t;
  17. #define BITS_PER_LONG 32
  18. #else
  19. typedef Elf64_Addr kernel_ulong_t;
  20. #define BITS_PER_LONG 64
  21. #endif
  22. #ifdef __sun__
  23. #include <inttypes.h>
  24. #else
  25. #include <stdint.h>
  26. #endif
  27. #include <ctype.h>
  28. typedef uint32_t __u32;
  29. typedef uint16_t __u16;
  30. typedef unsigned char __u8;
  31. /* Big exception to the "don't include kernel headers into userspace, which
  32. * even potentially has different endianness and word sizes, since
  33. * we handle those differences explicitly below */
  34. #include "../../include/linux/mod_devicetable.h"
  35. #define ADD(str, sep, cond, field) \
  36. do { \
  37. strcat(str, sep); \
  38. if (cond) \
  39. sprintf(str + strlen(str), \
  40. sizeof(field) == 1 ? "%02X" : \
  41. sizeof(field) == 2 ? "%04X" : \
  42. sizeof(field) == 4 ? "%08X" : "", \
  43. field); \
  44. else \
  45. sprintf(str + strlen(str), "*"); \
  46. } while(0)
  47. /**
  48. * Check that sizeof(device_id type) are consistent with size of section
  49. * in .o file. If in-consistent then userspace and kernel does not agree
  50. * on actual size which is a bug.
  51. * Also verify that the final entry in the table is all zeros.
  52. **/
  53. static void device_id_check(const char *modname, const char *device_id,
  54. unsigned long size, unsigned long id_size,
  55. void *symval)
  56. {
  57. int i;
  58. if (size % id_size || size < id_size) {
  59. fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
  60. "of the size of section __mod_%s_device_table=%lu.\n"
  61. "Fix definition of struct %s_device_id "
  62. "in mod_devicetable.h\n",
  63. modname, device_id, id_size, device_id, size, device_id);
  64. }
  65. /* Verify last one is a terminator */
  66. for (i = 0; i < id_size; i++ ) {
  67. if (*(uint8_t*)(symval+size-id_size+i)) {
  68. fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
  69. "The last of %lu is:\n",
  70. modname, device_id, id_size, size / id_size);
  71. for (i = 0; i < id_size; i++ )
  72. fprintf(stderr,"0x%02x ",
  73. *(uint8_t*)(symval+size-id_size+i) );
  74. fprintf(stderr,"\n");
  75. fatal("%s: struct %s_device_id is not terminated "
  76. "with a NULL entry!\n", modname, device_id);
  77. }
  78. }
  79. }
  80. /* USB is special because the bcdDevice can be matched against a numeric range */
  81. /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */
  82. static void do_usb_entry(struct usb_device_id *id,
  83. unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
  84. unsigned char range_lo, unsigned char range_hi,
  85. struct module *mod)
  86. {
  87. char alias[500];
  88. strcpy(alias, "usb:");
  89. ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR,
  90. id->idVendor);
  91. ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
  92. id->idProduct);
  93. strcat(alias, "d");
  94. if (bcdDevice_initial_digits)
  95. sprintf(alias + strlen(alias), "%0*X",
  96. bcdDevice_initial_digits, bcdDevice_initial);
  97. if (range_lo == range_hi)
  98. sprintf(alias + strlen(alias), "%u", range_lo);
  99. else if (range_lo > 0 || range_hi < 9)
  100. sprintf(alias + strlen(alias), "[%u-%u]", range_lo, range_hi);
  101. if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1))
  102. strcat(alias, "*");
  103. ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
  104. id->bDeviceClass);
  105. ADD(alias, "dsc",
  106. id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
  107. id->bDeviceSubClass);
  108. ADD(alias, "dp",
  109. id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
  110. id->bDeviceProtocol);
  111. ADD(alias, "ic",
  112. id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
  113. id->bInterfaceClass);
  114. ADD(alias, "isc",
  115. id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
  116. id->bInterfaceSubClass);
  117. ADD(alias, "ip",
  118. id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
  119. id->bInterfaceProtocol);
  120. /* Always end in a wildcard, for future extension */
  121. if (alias[strlen(alias)-1] != '*')
  122. strcat(alias, "*");
  123. buf_printf(&mod->dev_table_buf,
  124. "MODULE_ALIAS(\"%s\");\n", alias);
  125. }
  126. static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod)
  127. {
  128. unsigned int devlo, devhi;
  129. unsigned char chi, clo;
  130. int ndigits;
  131. id->match_flags = TO_NATIVE(id->match_flags);
  132. id->idVendor = TO_NATIVE(id->idVendor);
  133. id->idProduct = TO_NATIVE(id->idProduct);
  134. devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
  135. TO_NATIVE(id->bcdDevice_lo) : 0x0U;
  136. devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
  137. TO_NATIVE(id->bcdDevice_hi) : ~0x0U;
  138. /*
  139. * Some modules (visor) have empty slots as placeholder for
  140. * run-time specification that results in catch-all alias
  141. */
  142. if (!(id->idVendor | id->bDeviceClass | id->bInterfaceClass))
  143. return;
  144. /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
  145. for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
  146. clo = devlo & 0xf;
  147. chi = devhi & 0xf;
  148. if (chi > 9) /* it's bcd not hex */
  149. chi = 9;
  150. devlo >>= 4;
  151. devhi >>= 4;
  152. if (devlo == devhi || !ndigits) {
  153. do_usb_entry(id, devlo, ndigits, clo, chi, mod);
  154. break;
  155. }
  156. if (clo > 0)
  157. do_usb_entry(id, devlo++, ndigits, clo, 9, mod);
  158. if (chi < 9)
  159. do_usb_entry(id, devhi--, ndigits, 0, chi, mod);
  160. }
  161. }
  162. static void do_usb_table(void *symval, unsigned long size,
  163. struct module *mod)
  164. {
  165. unsigned int i;
  166. const unsigned long id_size = sizeof(struct usb_device_id);
  167. device_id_check(mod->name, "usb", size, id_size, symval);
  168. /* Leave last one: it's the terminator. */
  169. size -= id_size;
  170. for (i = 0; i < size; i += id_size)
  171. do_usb_entry_multi(symval + i, mod);
  172. }
  173. /* Looks like: ieee1394:venNmoNspNverN */
  174. static int do_ieee1394_entry(const char *filename,
  175. struct ieee1394_device_id *id, char *alias)
  176. {
  177. id->match_flags = TO_NATIVE(id->match_flags);
  178. id->vendor_id = TO_NATIVE(id->vendor_id);
  179. id->model_id = TO_NATIVE(id->model_id);
  180. id->specifier_id = TO_NATIVE(id->specifier_id);
  181. id->version = TO_NATIVE(id->version);
  182. strcpy(alias, "ieee1394:");
  183. ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID,
  184. id->vendor_id);
  185. ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID,
  186. id->model_id);
  187. ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID,
  188. id->specifier_id);
  189. ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION,
  190. id->version);
  191. return 1;
  192. }
  193. /* Looks like: pci:vNdNsvNsdNbcNscNiN. */
  194. static int do_pci_entry(const char *filename,
  195. struct pci_device_id *id, char *alias)
  196. {
  197. /* Class field can be divided into these three. */
  198. unsigned char baseclass, subclass, interface,
  199. baseclass_mask, subclass_mask, interface_mask;
  200. id->vendor = TO_NATIVE(id->vendor);
  201. id->device = TO_NATIVE(id->device);
  202. id->subvendor = TO_NATIVE(id->subvendor);
  203. id->subdevice = TO_NATIVE(id->subdevice);
  204. id->class = TO_NATIVE(id->class);
  205. id->class_mask = TO_NATIVE(id->class_mask);
  206. strcpy(alias, "pci:");
  207. ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor);
  208. ADD(alias, "d", id->device != PCI_ANY_ID, id->device);
  209. ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor);
  210. ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice);
  211. baseclass = (id->class) >> 16;
  212. baseclass_mask = (id->class_mask) >> 16;
  213. subclass = (id->class) >> 8;
  214. subclass_mask = (id->class_mask) >> 8;
  215. interface = id->class;
  216. interface_mask = id->class_mask;
  217. if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
  218. || (subclass_mask != 0 && subclass_mask != 0xFF)
  219. || (interface_mask != 0 && interface_mask != 0xFF)) {
  220. warn("Can't handle masks in %s:%04X\n",
  221. filename, id->class_mask);
  222. return 0;
  223. }
  224. ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
  225. ADD(alias, "sc", subclass_mask == 0xFF, subclass);
  226. ADD(alias, "i", interface_mask == 0xFF, interface);
  227. return 1;
  228. }
  229. /* looks like: "ccw:tNmNdtNdmN" */
  230. static int do_ccw_entry(const char *filename,
  231. struct ccw_device_id *id, char *alias)
  232. {
  233. id->match_flags = TO_NATIVE(id->match_flags);
  234. id->cu_type = TO_NATIVE(id->cu_type);
  235. id->cu_model = TO_NATIVE(id->cu_model);
  236. id->dev_type = TO_NATIVE(id->dev_type);
  237. id->dev_model = TO_NATIVE(id->dev_model);
  238. strcpy(alias, "ccw:");
  239. ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
  240. id->cu_type);
  241. ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
  242. id->cu_model);
  243. ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
  244. id->dev_type);
  245. ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
  246. id->dev_model);
  247. return 1;
  248. }
  249. /* looks like: "ap:tN" */
  250. static int do_ap_entry(const char *filename,
  251. struct ap_device_id *id, char *alias)
  252. {
  253. sprintf(alias, "ap:t%02X", id->dev_type);
  254. return 1;
  255. }
  256. /* Looks like: "serio:tyNprNidNexN" */
  257. static int do_serio_entry(const char *filename,
  258. struct serio_device_id *id, char *alias)
  259. {
  260. id->type = TO_NATIVE(id->type);
  261. id->proto = TO_NATIVE(id->proto);
  262. id->id = TO_NATIVE(id->id);
  263. id->extra = TO_NATIVE(id->extra);
  264. strcpy(alias, "serio:");
  265. ADD(alias, "ty", id->type != SERIO_ANY, id->type);
  266. ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
  267. ADD(alias, "id", id->id != SERIO_ANY, id->id);
  268. ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);
  269. return 1;
  270. }
  271. /* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
  272. static int do_acpi_entry(const char *filename,
  273. struct acpi_device_id *id, char *alias)
  274. {
  275. sprintf(alias, "acpi*:%s:", id->id);
  276. return 1;
  277. }
  278. /* looks like: "pnp:dD" */
  279. static int do_pnp_entry(const char *filename,
  280. struct pnp_device_id *id, char *alias)
  281. {
  282. sprintf(alias, "pnp:d%s", id->id);
  283. return 1;
  284. }
  285. /* looks like: "pnp:cCdD..." */
  286. static int do_pnp_card_entry(const char *filename,
  287. struct pnp_card_device_id *id, char *alias)
  288. {
  289. int i;
  290. sprintf(alias, "pnp:c%s", id->id);
  291. for (i = 0; i < PNP_MAX_DEVICES; i++) {
  292. if (! *id->devs[i].id)
  293. break;
  294. sprintf(alias + strlen(alias), "d%s", id->devs[i].id);
  295. }
  296. return 1;
  297. }
  298. /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
  299. static int do_pcmcia_entry(const char *filename,
  300. struct pcmcia_device_id *id, char *alias)
  301. {
  302. unsigned int i;
  303. id->match_flags = TO_NATIVE(id->match_flags);
  304. id->manf_id = TO_NATIVE(id->manf_id);
  305. id->card_id = TO_NATIVE(id->card_id);
  306. id->func_id = TO_NATIVE(id->func_id);
  307. id->function = TO_NATIVE(id->function);
  308. id->device_no = TO_NATIVE(id->device_no);
  309. for (i=0; i<4; i++) {
  310. id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
  311. }
  312. strcpy(alias, "pcmcia:");
  313. ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
  314. id->manf_id);
  315. ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
  316. id->card_id);
  317. ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
  318. id->func_id);
  319. ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
  320. id->function);
  321. ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
  322. id->device_no);
  323. ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
  324. ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
  325. ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
  326. ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);
  327. return 1;
  328. }
  329. static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
  330. {
  331. int len;
  332. char *tmp;
  333. len = sprintf (alias, "of:N%sT%s",
  334. of->name[0] ? of->name : "*",
  335. of->type[0] ? of->type : "*");
  336. if (of->compatible[0])
  337. sprintf (&alias[len], "%sC%s",
  338. of->type[0] ? "*" : "",
  339. of->compatible);
  340. /* Replace all whitespace with underscores */
  341. for (tmp = alias; tmp && *tmp; tmp++)
  342. if (isspace (*tmp))
  343. *tmp = '_';
  344. return 1;
  345. }
  346. static int do_vio_entry(const char *filename, struct vio_device_id *vio,
  347. char *alias)
  348. {
  349. char *tmp;
  350. sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*",
  351. vio->compat[0] ? vio->compat : "*");
  352. /* Replace all whitespace with underscores */
  353. for (tmp = alias; tmp && *tmp; tmp++)
  354. if (isspace (*tmp))
  355. *tmp = '_';
  356. return 1;
  357. }
  358. #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
  359. static void do_input(char *alias,
  360. kernel_ulong_t *arr, unsigned int min, unsigned int max)
  361. {
  362. unsigned int i;
  363. for (i = min; i < max; i++)
  364. if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
  365. sprintf(alias + strlen(alias), "%X,*", i);
  366. }
  367. /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
  368. static int do_input_entry(const char *filename, struct input_device_id *id,
  369. char *alias)
  370. {
  371. sprintf(alias, "input:");
  372. ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype);
  373. ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor);
  374. ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product);
  375. ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version);
  376. sprintf(alias + strlen(alias), "-e*");
  377. if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT)
  378. do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX);
  379. sprintf(alias + strlen(alias), "k*");
  380. if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
  381. do_input(alias, id->keybit,
  382. INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
  383. INPUT_DEVICE_ID_KEY_MAX);
  384. sprintf(alias + strlen(alias), "r*");
  385. if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT)
  386. do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX);
  387. sprintf(alias + strlen(alias), "a*");
  388. if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
  389. do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
  390. sprintf(alias + strlen(alias), "m*");
  391. if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT)
  392. do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
  393. sprintf(alias + strlen(alias), "l*");
  394. if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
  395. do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
  396. sprintf(alias + strlen(alias), "s*");
  397. if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
  398. do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
  399. sprintf(alias + strlen(alias), "f*");
  400. if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT)
  401. do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
  402. sprintf(alias + strlen(alias), "w*");
  403. if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT)
  404. do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
  405. return 1;
  406. }
  407. static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
  408. char *alias)
  409. {
  410. if (eisa->sig[0])
  411. sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig);
  412. return 1;
  413. }
  414. /* Looks like: parisc:tNhvNrevNsvN */
  415. static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
  416. char *alias)
  417. {
  418. id->hw_type = TO_NATIVE(id->hw_type);
  419. id->hversion = TO_NATIVE(id->hversion);
  420. id->hversion_rev = TO_NATIVE(id->hversion_rev);
  421. id->sversion = TO_NATIVE(id->sversion);
  422. strcpy(alias, "parisc:");
  423. ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type);
  424. ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion);
  425. ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev);
  426. ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion);
  427. return 1;
  428. }
  429. /* Looks like: sdio:cNvNdN. */
  430. static int do_sdio_entry(const char *filename,
  431. struct sdio_device_id *id, char *alias)
  432. {
  433. id->class = TO_NATIVE(id->class);
  434. id->vendor = TO_NATIVE(id->vendor);
  435. id->device = TO_NATIVE(id->device);
  436. strcpy(alias, "sdio:");
  437. ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class);
  438. ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor);
  439. ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device);
  440. return 1;
  441. }
  442. /* Looks like: ssb:vNidNrevN. */
  443. static int do_ssb_entry(const char *filename,
  444. struct ssb_device_id *id, char *alias)
  445. {
  446. id->vendor = TO_NATIVE(id->vendor);
  447. id->coreid = TO_NATIVE(id->coreid);
  448. id->revision = TO_NATIVE(id->revision);
  449. strcpy(alias, "ssb:");
  450. ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor);
  451. ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid);
  452. ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision);
  453. return 1;
  454. }
  455. /* Looks like: virtio:dNvN */
  456. static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
  457. char *alias)
  458. {
  459. id->device = TO_NATIVE(id->device);
  460. id->vendor = TO_NATIVE(id->vendor);
  461. strcpy(alias, "virtio:");
  462. ADD(alias, "d", 1, id->device);
  463. ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor);
  464. return 1;
  465. }
  466. /* Ignore any prefix, eg. v850 prepends _ */
  467. static inline int sym_is(const char *symbol, const char *name)
  468. {
  469. const char *match;
  470. match = strstr(symbol, name);
  471. if (!match)
  472. return 0;
  473. return match[strlen(symbol)] == '\0';
  474. }
  475. static void do_table(void *symval, unsigned long size,
  476. unsigned long id_size,
  477. const char *device_id,
  478. void *function,
  479. struct module *mod)
  480. {
  481. unsigned int i;
  482. char alias[500];
  483. int (*do_entry)(const char *, void *entry, char *alias) = function;
  484. device_id_check(mod->name, device_id, size, id_size, symval);
  485. /* Leave last one: it's the terminator. */
  486. size -= id_size;
  487. for (i = 0; i < size; i += id_size) {
  488. if (do_entry(mod->name, symval+i, alias)) {
  489. /* Always end in a wildcard, for future extension */
  490. if (alias[strlen(alias)-1] != '*')
  491. strcat(alias, "*");
  492. buf_printf(&mod->dev_table_buf,
  493. "MODULE_ALIAS(\"%s\");\n", alias);
  494. }
  495. }
  496. }
  497. /* Create MODULE_ALIAS() statements.
  498. * At this time, we cannot write the actual output C source yet,
  499. * so we write into the mod->dev_table_buf buffer. */
  500. void handle_moddevtable(struct module *mod, struct elf_info *info,
  501. Elf_Sym *sym, const char *symname)
  502. {
  503. void *symval;
  504. char *zeros = NULL;
  505. /* We're looking for a section relative symbol */
  506. if (!sym->st_shndx || sym->st_shndx >= info->hdr->e_shnum)
  507. return;
  508. /* Handle all-NULL symbols allocated into .bss */
  509. if (info->sechdrs[sym->st_shndx].sh_type & SHT_NOBITS) {
  510. zeros = calloc(1, sym->st_size);
  511. symval = zeros;
  512. } else {
  513. symval = (void *)info->hdr
  514. + info->sechdrs[sym->st_shndx].sh_offset
  515. + sym->st_value;
  516. }
  517. if (sym_is(symname, "__mod_pci_device_table"))
  518. do_table(symval, sym->st_size,
  519. sizeof(struct pci_device_id), "pci",
  520. do_pci_entry, mod);
  521. else if (sym_is(symname, "__mod_usb_device_table"))
  522. /* special case to handle bcdDevice ranges */
  523. do_usb_table(symval, sym->st_size, mod);
  524. else if (sym_is(symname, "__mod_ieee1394_device_table"))
  525. do_table(symval, sym->st_size,
  526. sizeof(struct ieee1394_device_id), "ieee1394",
  527. do_ieee1394_entry, mod);
  528. else if (sym_is(symname, "__mod_ccw_device_table"))
  529. do_table(symval, sym->st_size,
  530. sizeof(struct ccw_device_id), "ccw",
  531. do_ccw_entry, mod);
  532. else if (sym_is(symname, "__mod_ap_device_table"))
  533. do_table(symval, sym->st_size,
  534. sizeof(struct ap_device_id), "ap",
  535. do_ap_entry, mod);
  536. else if (sym_is(symname, "__mod_serio_device_table"))
  537. do_table(symval, sym->st_size,
  538. sizeof(struct serio_device_id), "serio",
  539. do_serio_entry, mod);
  540. else if (sym_is(symname, "__mod_acpi_device_table"))
  541. do_table(symval, sym->st_size,
  542. sizeof(struct acpi_device_id), "acpi",
  543. do_acpi_entry, mod);
  544. else if (sym_is(symname, "__mod_pnp_device_table"))
  545. do_table(symval, sym->st_size,
  546. sizeof(struct pnp_device_id), "pnp",
  547. do_pnp_entry, mod);
  548. else if (sym_is(symname, "__mod_pnp_card_device_table"))
  549. do_table(symval, sym->st_size,
  550. sizeof(struct pnp_card_device_id), "pnp_card",
  551. do_pnp_card_entry, mod);
  552. else if (sym_is(symname, "__mod_pcmcia_device_table"))
  553. do_table(symval, sym->st_size,
  554. sizeof(struct pcmcia_device_id), "pcmcia",
  555. do_pcmcia_entry, mod);
  556. else if (sym_is(symname, "__mod_of_device_table"))
  557. do_table(symval, sym->st_size,
  558. sizeof(struct of_device_id), "of",
  559. do_of_entry, mod);
  560. else if (sym_is(symname, "__mod_vio_device_table"))
  561. do_table(symval, sym->st_size,
  562. sizeof(struct vio_device_id), "vio",
  563. do_vio_entry, mod);
  564. else if (sym_is(symname, "__mod_input_device_table"))
  565. do_table(symval, sym->st_size,
  566. sizeof(struct input_device_id), "input",
  567. do_input_entry, mod);
  568. else if (sym_is(symname, "__mod_eisa_device_table"))
  569. do_table(symval, sym->st_size,
  570. sizeof(struct eisa_device_id), "eisa",
  571. do_eisa_entry, mod);
  572. else if (sym_is(symname, "__mod_parisc_device_table"))
  573. do_table(symval, sym->st_size,
  574. sizeof(struct parisc_device_id), "parisc",
  575. do_parisc_entry, mod);
  576. else if (sym_is(symname, "__mod_sdio_device_table"))
  577. do_table(symval, sym->st_size,
  578. sizeof(struct sdio_device_id), "sdio",
  579. do_sdio_entry, mod);
  580. else if (sym_is(symname, "__mod_ssb_device_table"))
  581. do_table(symval, sym->st_size,
  582. sizeof(struct ssb_device_id), "ssb",
  583. do_ssb_entry, mod);
  584. else if (sym_is(symname, "__mod_virtio_device_table"))
  585. do_table(symval, sym->st_size,
  586. sizeof(struct virtio_device_id), "virtio",
  587. do_virtio_entry, mod);
  588. free(zeros);
  589. }
  590. /* Now add out buffered information to the generated C source */
  591. void add_moddevtable(struct buffer *buf, struct module *mod)
  592. {
  593. buf_printf(buf, "\n");
  594. buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
  595. free(mod->dev_table_buf.p);
  596. }