1 /*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 /*
29 * file/module function dispatcher, support, etc.
30 */
31
32 #include <stand.h>
33 #include <string.h>
34 #include <sys/param.h>
35 #include <sys/linker.h>
36 #include <sys/module.h>
37 #include <sys/queue.h>
38 #include <sys/stdint.h>
39 #include <sys/font.h>
40 #include <gfx_fb.h>
41
42 #if defined(LOADER_FDT_SUPPORT)
43 #include <fdt_platform.h>
44 #endif
45
46 #include "bootstrap.h"
47
48 #define MDIR_REMOVED 0x0001
49 #define MDIR_NOHINTS 0x0002
50
51 struct moduledir {
52 char *d_path; /* path of modules directory */
53 u_char *d_hints; /* content of linker.hints file */
54 int d_hintsz; /* size of hints data */
55 int d_flags;
56 STAILQ_ENTRY(moduledir) d_link;
57 };
58
59 static int file_load(char *filename, vm_offset_t dest, struct preloaded_file **result);
60 static int file_load_dependencies(struct preloaded_file *base_mod);
61 static char * file_search(const char *name, char **extlist);
62 static struct kernel_module * file_findmodule(struct preloaded_file *fp, char *modname, struct mod_depend *verinfo);
63 static int file_havepath(const char *name);
64 static char *mod_searchmodule(char *name, struct mod_depend *verinfo);
65 static char * mod_searchmodule_pnpinfo(const char *bus, const char *pnpinfo);
66 static void file_insert_tail(struct preloaded_file *mp);
67 static void file_remove(struct preloaded_file *fp);
68 static void file_remove_tail(struct preloaded_file *fp);
69 struct file_metadata* metadata_next(struct file_metadata *base_mp, int type);
70 static void moduledir_readhints(struct moduledir *mdp);
71 static void moduledir_rebuild(void);
72
73 /* load address should be tweaked by first module loaded (kernel) */
74 static vm_offset_t loadaddr = 0;
75
76 #if defined(LOADER_FDT_SUPPORT)
77 static const char *default_searchpath =
78 "/boot/kernel;/boot/modules;/boot/dtb";
79 #else
80 static const char *default_searchpath = "/boot/kernel;/boot/modules";
81 #endif
82
83 static STAILQ_HEAD(, moduledir) moduledir_list =
84 STAILQ_HEAD_INITIALIZER(moduledir_list);
85
86 struct preloaded_file *preloaded_files = NULL;
87
88 static char *kld_ext_list[] = {
89 ".ko",
90 "",
91 ".debug",
92 NULL
93 };
94
95 /*
96 * load an object, either a disk file or code module.
97 *
98 * To load a file, the syntax is:
99 *
100 * load -t <type> <path>
101 *
102 * code modules are loaded as:
103 *
104 * load <path> <options>
105 */
106
107 COMMAND_SET(load, "load", "load a kernel or module", command_load);
108
109 static int
command_load(int argc,char * argv[])110 command_load(int argc, char *argv[])
111 {
112 struct preloaded_file *fp;
113 char *typestr;
114 #ifdef LOADER_VERIEXEC
115 char *prefix, *skip;
116 #endif
117 int dflag, dofile, dokld, ch, error;
118
119 dflag = dokld = dofile = 0;
120 optind = 1;
121 optreset = 1;
122 typestr = NULL;
123 if (argc == 1) {
124 command_errmsg = "no filename specified";
125 return (CMD_CRIT);
126 }
127 #ifdef LOADER_VERIEXEC
128 prefix = NULL;
129 skip = NULL;
130 #endif
131 while ((ch = getopt(argc, argv, "dkp:s:t:")) != -1) {
132 switch(ch) {
133 case 'd':
134 dflag++;
135 break;
136 case 'k':
137 dokld = 1;
138 break;
139 #ifdef LOADER_VERIEXEC
140 case 'p':
141 prefix = optarg;
142 break;
143 case 's':
144 skip = optarg;
145 break;
146 #endif
147 case 't':
148 typestr = optarg;
149 dofile = 1;
150 break;
151 case '?':
152 default:
153 /* getopt has already reported an error */
154 return (CMD_OK);
155 }
156 }
157 argv += (optind - 1);
158 argc -= (optind - 1);
159
160 /*
161 * Request to load a raw file?
162 */
163 if (dofile) {
164 if ((argc != 2) || (typestr == NULL) || (*typestr == 0)) {
165 command_errmsg = "invalid load type";
166 return (CMD_CRIT);
167 }
168
169 #ifdef LOADER_VERIEXEC
170 if (strncmp(typestr, "manifest", 8) == 0) {
171 if (dflag > 0)
172 ve_debug_set(dflag);
173 return (load_manifest(argv[1], prefix, skip, NULL));
174 }
175 #ifdef LOADER_VERIEXEC_PASS_MANIFEST
176 if (strncmp(typestr, "pass_manifest", 13) == 0) {
177 if (dflag > 0)
178 ve_debug_set(dflag);
179 return (pass_manifest(argv[1], prefix));
180 }
181 #endif
182 #endif
183
184 fp = file_findfile(argv[1], typestr);
185 if (fp) {
186 snprintf(command_errbuf, sizeof(command_errbuf),
187 "warning: file '%s' already loaded", argv[1]);
188 return (CMD_WARN);
189 }
190
191 if (file_loadraw(argv[1], typestr, 1) != NULL)
192 return (CMD_OK);
193
194 /* Failing to load mfs_root is never going to end well! */
195 if (strcmp("mfs_root", typestr) == 0)
196 return (CMD_FATAL);
197
198 return (CMD_ERROR);
199 }
200 /*
201 * Do we have explicit KLD load ?
202 */
203 if (dokld || file_havepath(argv[1])) {
204 error = mod_loadkld(argv[1], argc - 2, argv + 2);
205 if (error == EEXIST) {
206 snprintf(command_errbuf, sizeof(command_errbuf),
207 "warning: KLD '%s' already loaded", argv[1]);
208 return (CMD_WARN);
209 }
210
211 return (error == 0 ? CMD_OK : CMD_CRIT);
212 }
213 /*
214 * Looks like a request for a module.
215 */
216 error = mod_load(argv[1], NULL, argc - 2, argv + 2);
217 if (error == EEXIST) {
218 snprintf(command_errbuf, sizeof(command_errbuf),
219 "warning: module '%s' already loaded", argv[1]);
220 return (CMD_WARN);
221 }
222
223 return (error == 0 ? CMD_OK : CMD_CRIT);
224 }
225
226 #ifdef LOADER_GELI_SUPPORT
227 COMMAND_SET(load_geli, "load_geli", "load a geli key", command_load_geli);
228
229 static int
command_load_geli(int argc,char * argv[])230 command_load_geli(int argc, char *argv[])
231 {
232 char typestr[80];
233 char *cp;
234 int ch, num;
235
236 if (argc < 3) {
237 command_errmsg = "usage is [-n key#] <prov> <file>";
238 return(CMD_ERROR);
239 }
240
241 num = 0;
242 optind = 1;
243 optreset = 1;
244 while ((ch = getopt(argc, argv, "n:")) != -1) {
245 switch(ch) {
246 case 'n':
247 num = strtol(optarg, &cp, 0);
248 if (cp == optarg) {
249 snprintf(command_errbuf, sizeof(command_errbuf),
250 "bad key index '%s'", optarg);
251 return(CMD_ERROR);
252 }
253 break;
254 case '?':
255 default:
256 /* getopt has already reported an error */
257 return(CMD_OK);
258 }
259 }
260 argv += (optind - 1);
261 argc -= (optind - 1);
262 sprintf(typestr, "%s:geli_keyfile%d", argv[1], num);
263 return (file_loadraw(argv[2], typestr, 1) ? CMD_OK : CMD_ERROR);
264 }
265 #endif
266
267 void
unload(void)268 unload(void)
269 {
270 struct preloaded_file *fp;
271
272 while (preloaded_files != NULL) {
273 fp = preloaded_files;
274 preloaded_files = preloaded_files->f_next;
275 file_discard(fp);
276 }
277 loadaddr = 0;
278 unsetenv("kernelname");
279 }
280
281 COMMAND_SET(unload, "unload", "unload all modules", command_unload);
282
283 static int
command_unload(int argc,char * argv[])284 command_unload(int argc, char *argv[])
285 {
286 unload();
287 return(CMD_OK);
288 }
289
290 COMMAND_SET(lsmod, "lsmod", "list loaded modules", command_lsmod);
291
292 static int
command_lsmod(int argc,char * argv[])293 command_lsmod(int argc, char *argv[])
294 {
295 struct preloaded_file *fp;
296 struct kernel_module *mp;
297 struct file_metadata *md;
298 char lbuf[80];
299 int ch, verbose, ret = 0;
300
301 verbose = 0;
302 optind = 1;
303 optreset = 1;
304 while ((ch = getopt(argc, argv, "v")) != -1) {
305 switch(ch) {
306 case 'v':
307 verbose = 1;
308 break;
309 case '?':
310 default:
311 /* getopt has already reported an error */
312 return(CMD_OK);
313 }
314 }
315
316 pager_open();
317 for (fp = preloaded_files; fp; fp = fp->f_next) {
318 snprintf(lbuf, sizeof(lbuf), " %p: ", (void *) fp->f_addr);
319 pager_output(lbuf);
320 pager_output(fp->f_name);
321 snprintf(lbuf, sizeof(lbuf), " (%s, 0x%lx)\n", fp->f_type,
322 (long)fp->f_size);
323 if (pager_output(lbuf))
324 break;
325 if (fp->f_args != NULL) {
326 pager_output(" args: ");
327 pager_output(fp->f_args);
328 if (pager_output("\n"))
329 break;
330 }
331 if (fp->f_modules) {
332 pager_output(" modules: ");
333 for (mp = fp->f_modules; mp; mp = mp->m_next) {
334 snprintf(lbuf, sizeof(lbuf), "%s.%d ", mp->m_name,
335 mp->m_version);
336 pager_output(lbuf);
337 }
338 if (pager_output("\n"))
339 break;
340 }
341 if (verbose) {
342 /* XXX could add some formatting smarts here to display some better */
343 for (md = fp->f_metadata; md != NULL; md = md->md_next) {
344 snprintf(lbuf, sizeof(lbuf), " 0x%04x, 0x%lx\n",
345 md->md_type, (long) md->md_size);
346 if (pager_output(lbuf))
347 break;
348 }
349 }
350 if (ret)
351 break;
352 }
353 pager_close();
354 return(CMD_OK);
355 }
356
357 COMMAND_SET(pnpmatch, "pnpmatch", "list matched modules based on pnpinfo", command_pnpmatch);
358
359 static int pnp_dump_flag = 0;
360 static int pnp_unbound_flag = 0;
361 static int pnp_verbose_flag = 0;
362
363 static int
command_pnpmatch(int argc,char * argv[])364 command_pnpmatch(int argc, char *argv[])
365 {
366 char *module;
367 int ch;
368
369 pnp_verbose_flag = 0;
370 pnp_dump_flag = 0;
371 optind = 1;
372 optreset = 1;
373 while ((ch = getopt(argc, argv, "vd")) != -1) {
374 switch(ch) {
375 case 'v':
376 pnp_verbose_flag = 1;
377 break;
378 case 'd':
379 pnp_dump_flag = 1;
380 break;
381 case '?':
382 default:
383 /* getopt has already reported an error */
384 return(CMD_OK);
385 }
386 }
387 argv += optind;
388 argc -= optind;
389
390 if (argc != 2) {
391 command_errmsg = "Usage: pnpmatch <busname> compat=<compatdata>";
392 return (CMD_CRIT);
393 }
394
395 module = mod_searchmodule_pnpinfo(argv[0], argv[1]);
396 if (module)
397 printf("Matched module: %s\n", module);
398 else
399 printf("No module matches %s on bus %s\n", argv[1], argv[0]);
400
401 return (CMD_OK);
402 }
403
404 COMMAND_SET(pnpload, "pnpload", "load matched modules based on pnpinfo", command_pnpload);
405
406 static int
command_pnpload(int argc,char * argv[])407 command_pnpload(int argc, char *argv[])
408 {
409 char *module;
410 int ch, error;
411
412 pnp_verbose_flag = 0;
413 pnp_dump_flag = 0;
414 optind = 1;
415 optreset = 1;
416 while ((ch = getopt(argc, argv, "vd")) != -1) {
417 switch(ch) {
418 case 'v':
419 pnp_verbose_flag = 1;
420 break;
421 case 'd':
422 pnp_dump_flag = 1;
423 break;
424 case '?':
425 default:
426 /* getopt has already reported an error */
427 return(CMD_OK);
428 }
429 }
430 argv += optind;
431 argc -= optind;
432
433 if (argc != 2) {
434 command_errmsg = "Usage: pnpload <busname> compat=<compatdata>";
435 return (CMD_ERROR);
436 }
437
438 module = mod_searchmodule_pnpinfo(argv[0], argv[1]);
439
440 error = mod_load(module, NULL, 0, NULL);
441 if (error == EEXIST) {
442 snprintf(command_errbuf, sizeof(command_errbuf),
443 "warning: module '%s' already loaded", argv[1]);
444 return (CMD_WARN);
445 }
446
447 return (error == 0 ? CMD_OK : CMD_CRIT);
448 }
449
450 #if defined(LOADER_FDT_SUPPORT)
451 static void
pnpautoload_fdt_bus(const char * busname)452 pnpautoload_fdt_bus(const char *busname) {
453 const char *pnpstring;
454 const char *compatstr;
455 char *pnpinfo = NULL;
456 char *module = NULL;
457 int tag = 0, len, pnplen;
458 int error;
459
460 while (1) {
461 pnpstring = fdt_devmatch_next(&tag, &len);
462 if (pnpstring == NULL)
463 return;
464
465 compatstr = pnpstring;
466 for (pnplen = 0; pnplen != len; compatstr = pnpstring + pnplen) {
467 pnplen += strlen(compatstr) + 1;
468 asprintf(&pnpinfo, "compat=%s", compatstr);
469
470 module = mod_searchmodule_pnpinfo(busname, pnpinfo);
471 if (module) {
472 error = mod_loadkld(module, 0, NULL);
473 if (error)
474 printf("Cannot load module %s\n", module);
475 break;
476 }
477 }
478 free(pnpinfo);
479 free(module);
480 }
481 }
482 #endif
483
484 struct pnp_bus {
485 const char *name;
486 void (*load)(const char *busname);
487 };
488
489 struct pnp_bus pnp_buses[] = {
490 #if defined(LOADER_FDT_SUPPORT)
491 {"simplebus", pnpautoload_fdt_bus},
492 {"ofwbus", pnpautoload_fdt_bus},
493 {"iicbus", pnpautoload_fdt_bus},
494 {"spibus", pnpautoload_fdt_bus},
495 #endif
496 };
497
498 COMMAND_SET(pnpautoload, "pnpautoload", "auto load modules based on pnpinfo", command_pnpautoload);
499
500 static int
command_pnpautoload(int argc,char * argv[])501 command_pnpautoload(int argc, char *argv[])
502 {
503 int i;
504 int verbose;
505 int ch, match;
506
507 pnp_verbose_flag = 0;
508 pnp_dump_flag = 0;
509 verbose = 0;
510 optind = 1;
511 optreset = 1;
512 match = 0;
513 while ((ch = getopt(argc, argv, "v")) != -1) {
514 switch(ch) {
515 case 'v':
516 verbose = 1;
517 break;
518 case '?':
519 default:
520 /* getopt has already reported an error */
521 return(CMD_OK);
522 }
523 }
524 argv += (optind - 1);
525 argc -= (optind - 1);
526
527 if (argc > 2)
528 return (CMD_ERROR);
529
530 for (i = 0; i < nitems(pnp_buses); i++) {
531 if (argc == 2 && strcmp(argv[1], pnp_buses[i].name) != 0) {
532 if (verbose)
533 printf("Skipping bus %s\n", pnp_buses[i].name);
534 continue;
535 }
536 if (verbose)
537 printf("Autoloading modules for %s\n", pnp_buses[i].name);
538 pnp_buses[i].load(pnp_buses[i].name);
539 match = 1;
540 }
541 if (match == 0)
542 printf("Unsupported bus %s\n", argv[1]);
543
544 return (CMD_OK);
545 }
546
547 /*
548 * File level interface, functions file_*
549 */
550 int
file_load(char * filename,vm_offset_t dest,struct preloaded_file ** result)551 file_load(char *filename, vm_offset_t dest, struct preloaded_file **result)
552 {
553 static int last_file_format = 0;
554 struct preloaded_file *fp;
555 int error;
556 int i;
557
558 TSENTER2(filename);
559 if (archsw.arch_loadaddr != NULL)
560 dest = archsw.arch_loadaddr(LOAD_RAW, filename, dest);
561
562 error = EFTYPE;
563 for (i = last_file_format, fp = NULL;
564 file_formats[i] && fp == NULL; i++) {
565 error = (file_formats[i]->l_load)(filename, dest, &fp);
566 if (error == 0) {
567 fp->f_loader = last_file_format = i; /* remember the loader */
568 *result = fp;
569 break;
570 } else if (last_file_format == i && i != 0) {
571 /* Restart from the beginning */
572 i = -1;
573 last_file_format = 0;
574 fp = NULL;
575 continue;
576 }
577 if (error == EFTYPE)
578 continue; /* Unknown to this handler? */
579 if (error) {
580 snprintf(command_errbuf, sizeof(command_errbuf),
581 "can't load file '%s': %s", filename, strerror(error));
582 break;
583 }
584 }
585 TSEXIT();
586 return (error);
587 }
588
589 static int
file_load_dependencies(struct preloaded_file * base_file)590 file_load_dependencies(struct preloaded_file *base_file)
591 {
592 struct file_metadata *md;
593 struct preloaded_file *fp;
594 struct mod_depend *verinfo;
595 struct kernel_module *mp;
596 char *dmodname;
597 int error;
598
599 md = file_findmetadata(base_file, MODINFOMD_DEPLIST);
600 if (md == NULL)
601 return (0);
602 error = 0;
603 do {
604 verinfo = (struct mod_depend*)md->md_data;
605 dmodname = (char *)(verinfo + 1);
606 if (file_findmodule(NULL, dmodname, verinfo) == NULL) {
607 if (module_verbose > MODULE_VERBOSE_SILENT)
608 printf("loading required module '%s'\n", dmodname);
609 error = mod_load(dmodname, verinfo, 0, NULL);
610 if (error)
611 break;
612 /*
613 * If module loaded via kld name which isn't listed
614 * in the linker.hints file, we should check if it have
615 * required version.
616 */
617 mp = file_findmodule(NULL, dmodname, verinfo);
618 if (mp == NULL) {
619 snprintf(command_errbuf, sizeof(command_errbuf),
620 "module '%s' exists but with wrong version", dmodname);
621 error = ENOENT;
622 break;
623 }
624 }
625 md = metadata_next(md, MODINFOMD_DEPLIST);
626 } while (md);
627 if (!error)
628 return (0);
629 /* Load failed; discard everything */
630 while (base_file != NULL) {
631 fp = base_file;
632 base_file = base_file->f_next;
633 file_discard(fp);
634 }
635 return (error);
636 }
637
638 vm_offset_t
build_font_module(vm_offset_t addr)639 build_font_module(vm_offset_t addr)
640 {
641 vt_font_bitmap_data_t *bd;
642 struct vt_font *fd;
643 struct preloaded_file *fp;
644 size_t size;
645 uint32_t checksum;
646 int i;
647 struct font_info fi;
648 struct fontlist *fl;
649 uint64_t fontp;
650
651 if (STAILQ_EMPTY(&fonts))
652 return (addr);
653
654 /* We can't load first */
655 if ((file_findfile(NULL, NULL)) == NULL) {
656 printf("Can not load font module: %s\n",
657 "the kernel is not loaded");
658 return (addr);
659 }
660
661 /* helper pointers */
662 bd = NULL;
663 STAILQ_FOREACH(fl, &fonts, font_next) {
664 if (gfx_state.tg_font.vf_width == fl->font_data->vfbd_width &&
665 gfx_state.tg_font.vf_height == fl->font_data->vfbd_height) {
666 /*
667 * Kernel does have better built in font.
668 */
669 if (fl->font_flags == FONT_BUILTIN)
670 return (addr);
671
672 bd = fl->font_data;
673 break;
674 }
675 }
676 if (bd == NULL)
677 return (addr);
678 fd = bd->vfbd_font;
679
680 fi.fi_width = fd->vf_width;
681 checksum = fi.fi_width;
682 fi.fi_height = fd->vf_height;
683 checksum += fi.fi_height;
684 fi.fi_bitmap_size = bd->vfbd_uncompressed_size;
685 checksum += fi.fi_bitmap_size;
686
687 size = roundup2(sizeof (struct font_info), 8);
688 for (i = 0; i < VFNT_MAPS; i++) {
689 fi.fi_map_count[i] = fd->vf_map_count[i];
690 checksum += fi.fi_map_count[i];
691 size += fd->vf_map_count[i] * sizeof (struct vfnt_map);
692 size += roundup2(size, 8);
693 }
694 size += bd->vfbd_uncompressed_size;
695
696 fi.fi_checksum = -checksum;
697
698 fp = file_findfile(NULL, "elf kernel");
699 if (fp == NULL)
700 fp = file_findfile(NULL, "elf64 kernel");
701 if (fp == NULL)
702 panic("can't find kernel file");
703
704 fontp = addr;
705 addr += archsw.arch_copyin(&fi, addr, sizeof (struct font_info));
706 addr = roundup2(addr, 8);
707
708 /* Copy maps. */
709 for (i = 0; i < VFNT_MAPS; i++) {
710 if (fd->vf_map_count[i] != 0) {
711 addr += archsw.arch_copyin(fd->vf_map[i], addr,
712 fd->vf_map_count[i] * sizeof (struct vfnt_map));
713 addr = roundup2(addr, 8);
714 }
715 }
716
717 /* Copy the bitmap. */
718 addr += archsw.arch_copyin(fd->vf_bytes, addr, fi.fi_bitmap_size);
719
720 /* Looks OK so far; populate control structure */
721 file_addmetadata(fp, MODINFOMD_FONT, sizeof(fontp), &fontp);
722 return (addr);
723 }
724
725 #ifdef LOADER_VERIEXEC_VECTX
726 #define VECTX_HANDLE(fd) vctx
727 #else
728 #define VECTX_HANDLE(fd) fd
729 #endif
730
731
732 /*
733 * We've been asked to load (fname) as (type), so just suck it in,
734 * no arguments or anything.
735 */
736 struct preloaded_file *
file_loadraw(const char * fname,char * type,int insert)737 file_loadraw(const char *fname, char *type, int insert)
738 {
739 struct preloaded_file *fp;
740 char *name;
741 int fd, got;
742 vm_offset_t laddr;
743 #ifdef LOADER_VERIEXEC_VECTX
744 struct vectx *vctx;
745 int verror;
746 #endif
747
748 TSENTER2(fname);
749 /* We can't load first */
750 if ((file_findfile(NULL, NULL)) == NULL) {
751 command_errmsg = "can't load file before kernel";
752 TSEXIT();
753 return(NULL);
754 }
755
756 /* locate the file on the load path */
757 name = file_search(fname, NULL);
758 if (name == NULL) {
759 snprintf(command_errbuf, sizeof(command_errbuf),
760 "can't find '%s'", fname);
761 TSEXIT();
762 return(NULL);
763 }
764
765 if ((fd = open(name, O_RDONLY)) < 0) {
766 snprintf(command_errbuf, sizeof(command_errbuf),
767 "can't open '%s': %s", name, strerror(errno));
768 free(name);
769 TSEXIT();
770 return(NULL);
771 }
772
773 #ifdef LOADER_VERIEXEC_VECTX
774 vctx = vectx_open(fd, name, 0L, NULL, &verror, __func__);
775 if (verror) {
776 sprintf(command_errbuf, "can't verify '%s': %s",
777 name, ve_error_get());
778 free(name);
779 free(vctx);
780 close(fd);
781 TSEXIT();
782 return(NULL);
783 }
784 #else
785 #ifdef LOADER_VERIEXEC
786 if (verify_file(fd, name, 0, VE_MUST, __func__) < 0) {
787 sprintf(command_errbuf, "can't verify '%s': %s",
788 name, ve_error_get());
789 free(name);
790 close(fd);
791 TSEXIT();
792 return(NULL);
793 }
794 #endif
795 #endif
796
797 if (archsw.arch_loadaddr != NULL)
798 loadaddr = archsw.arch_loadaddr(LOAD_RAW, name, loadaddr);
799
800 if (module_verbose > MODULE_VERBOSE_SILENT)
801 printf("%s ", name);
802
803 laddr = loadaddr;
804 for (;;) {
805 /* read in 4k chunks; size is not really important */
806 got = archsw.arch_readin(VECTX_HANDLE(fd), laddr, 4096);
807 if (got == 0) /* end of file */
808 break;
809 if (got < 0) { /* error */
810 snprintf(command_errbuf, sizeof(command_errbuf),
811 "error reading '%s': %s", name, strerror(errno));
812 free(name);
813 close(fd);
814 #ifdef LOADER_VERIEXEC_VECTX
815 free(vctx);
816 #endif
817 TSEXIT();
818 return(NULL);
819 }
820 laddr += got;
821 }
822
823 if (module_verbose > MODULE_VERBOSE_SILENT)
824 printf("size=%#jx\n", (uintmax_t)(laddr - loadaddr));
825 #ifdef LOADER_VERIEXEC_VECTX
826 verror = vectx_close(vctx, VE_MUST, __func__);
827 if (verror) {
828 free(name);
829 close(fd);
830 free(vctx);
831 TSEXIT();
832 return(NULL);
833 }
834 #endif
835
836 /* Looks OK so far; create & populate control structure */
837 fp = file_alloc();
838 if (fp == NULL) {
839 snprintf(command_errbuf, sizeof (command_errbuf),
840 "no memory to load %s", name);
841 free(name);
842 close(fd);
843 TSEXIT();
844 return (NULL);
845 }
846 fp->f_name = name;
847 fp->f_type = strdup(type);
848 fp->f_args = NULL;
849 fp->f_metadata = NULL;
850 fp->f_loader = -1;
851 fp->f_addr = loadaddr;
852 fp->f_size = laddr - loadaddr;
853
854 if (fp->f_type == NULL) {
855 snprintf(command_errbuf, sizeof (command_errbuf),
856 "no memory to load %s", name);
857 free(name);
858 close(fd);
859 TSEXIT();
860 return (NULL);
861 }
862 /* recognise space consumption */
863 loadaddr = laddr;
864
865 /* Add to the list of loaded files */
866 if (insert != 0)
867 file_insert_tail(fp);
868 close(fd);
869 TSEXIT();
870 return(fp);
871 }
872
873 /*
874 * Load the module (name), pass it (argc),(argv), add container file
875 * to the list of loaded files.
876 * If module is already loaded just assign new argc/argv.
877 */
878 int
mod_load(char * modname,struct mod_depend * verinfo,int argc,char * argv[])879 mod_load(char *modname, struct mod_depend *verinfo, int argc, char *argv[])
880 {
881 struct kernel_module *mp;
882 int err;
883 char *filename;
884
885 TSENTER2(modname);
886 if (file_havepath(modname)) {
887 printf("Warning: mod_load() called instead of mod_loadkld() for module '%s'\n", modname);
888 TSEXIT();
889 return (mod_loadkld(modname, argc, argv));
890 }
891 /* see if module is already loaded */
892 mp = file_findmodule(NULL, modname, verinfo);
893 if (mp) {
894 #ifdef moduleargs
895 free(mp->m_args);
896 mp->m_args = unargv(argc, argv);
897 #endif
898 snprintf(command_errbuf, sizeof(command_errbuf),
899 "warning: module '%s' already loaded", mp->m_name);
900 TSEXIT();
901 return (0);
902 }
903 /* locate file with the module on the search path */
904 filename = mod_searchmodule(modname, verinfo);
905 if (filename == NULL) {
906 snprintf(command_errbuf, sizeof(command_errbuf),
907 "can't find '%s'", modname);
908 TSEXIT();
909 return (ENOENT);
910 }
911 err = mod_loadkld(filename, argc, argv);
912 free(filename);
913 TSEXIT();
914 return (err);
915 }
916
917 /*
918 * Load specified KLD. If path is omitted, then try to locate it via
919 * search path.
920 */
921 int
mod_loadkld(const char * kldname,int argc,char * argv[])922 mod_loadkld(const char *kldname, int argc, char *argv[])
923 {
924 struct preloaded_file *fp;
925 int err;
926 char *filename;
927 vm_offset_t loadaddr_saved;
928
929 TSENTER2(kldname);
930 /*
931 * Get fully qualified KLD name
932 */
933 filename = file_search(kldname, kld_ext_list);
934 if (filename == NULL) {
935 snprintf(command_errbuf, sizeof(command_errbuf),
936 "can't find '%s'", kldname);
937 TSEXIT();
938 return (ENOENT);
939 }
940 /*
941 * Check if KLD already loaded
942 */
943 fp = file_findfile(filename, NULL);
944 if (fp) {
945 snprintf(command_errbuf, sizeof(command_errbuf),
946 "warning: KLD '%s' already loaded", filename);
947 free(filename);
948 TSEXIT();
949 return (0);
950 }
951
952 do {
953 err = file_load(filename, loadaddr, &fp);
954 if (err)
955 break;
956 fp->f_args = unargv(argc, argv);
957 loadaddr_saved = loadaddr;
958 loadaddr = fp->f_addr + fp->f_size;
959 file_insert_tail(fp); /* Add to the list of loaded files */
960 if (file_load_dependencies(fp) != 0) {
961 err = ENOENT;
962 file_remove_tail(fp);
963 loadaddr = loadaddr_saved;
964 fp = NULL;
965 break;
966 }
967 } while(0);
968 if (err == EFTYPE) {
969 snprintf(command_errbuf, sizeof(command_errbuf),
970 "don't know how to load module '%s'", filename);
971 }
972 if (err)
973 file_discard(fp);
974 free(filename);
975 TSEXIT();
976 return (err);
977 }
978
979 /*
980 * Find a file matching (name) and (type).
981 * NULL may be passed as a wildcard to either.
982 */
983 struct preloaded_file *
file_findfile(const char * name,const char * type)984 file_findfile(const char *name, const char *type)
985 {
986 struct preloaded_file *fp;
987
988 for (fp = preloaded_files; fp != NULL; fp = fp->f_next) {
989 if (((name == NULL) || !strcmp(name, fp->f_name)) &&
990 ((type == NULL) || !strcmp(type, fp->f_type)))
991 break;
992 }
993 return (fp);
994 }
995
996 /*
997 * Find a module matching (name) inside of given file.
998 * NULL may be passed as a wildcard.
999 */
1000 struct kernel_module *
file_findmodule(struct preloaded_file * fp,char * modname,struct mod_depend * verinfo)1001 file_findmodule(struct preloaded_file *fp, char *modname,
1002 struct mod_depend *verinfo)
1003 {
1004 struct kernel_module *mp, *best;
1005 int bestver, mver;
1006
1007 if (fp == NULL) {
1008 for (fp = preloaded_files; fp; fp = fp->f_next) {
1009 mp = file_findmodule(fp, modname, verinfo);
1010 if (mp)
1011 return (mp);
1012 }
1013 return (NULL);
1014 }
1015 best = NULL;
1016 bestver = 0;
1017 for (mp = fp->f_modules; mp; mp = mp->m_next) {
1018 if (strcmp(modname, mp->m_name) == 0) {
1019 if (verinfo == NULL)
1020 return (mp);
1021 mver = mp->m_version;
1022 if (mver == verinfo->md_ver_preferred)
1023 return (mp);
1024 if (mver >= verinfo->md_ver_minimum &&
1025 mver <= verinfo->md_ver_maximum &&
1026 mver > bestver) {
1027 best = mp;
1028 bestver = mver;
1029 }
1030 }
1031 }
1032 return (best);
1033 }
1034 /*
1035 * Make a copy of (size) bytes of data from (p), and associate them as
1036 * metadata of (type) to the module (mp).
1037 */
1038 void
file_addmetadata(struct preloaded_file * fp,int type,size_t size,void * p)1039 file_addmetadata(struct preloaded_file *fp, int type, size_t size, void *p)
1040 {
1041 struct file_metadata *md;
1042
1043 md = malloc(sizeof(struct file_metadata) - sizeof(md->md_data) + size);
1044 if (md != NULL) {
1045 md->md_size = size;
1046 md->md_type = type;
1047 bcopy(p, md->md_data, size);
1048 md->md_next = fp->f_metadata;
1049 }
1050 fp->f_metadata = md;
1051 }
1052
1053 /*
1054 * Find a metadata object of (type) associated with the file (fp)
1055 */
1056 struct file_metadata *
file_findmetadata(struct preloaded_file * fp,int type)1057 file_findmetadata(struct preloaded_file *fp, int type)
1058 {
1059 struct file_metadata *md;
1060
1061 for (md = fp->f_metadata; md != NULL; md = md->md_next)
1062 if (md->md_type == type)
1063 break;
1064 return(md);
1065 }
1066
1067 /*
1068 * Remove all metadata from the file.
1069 */
1070 void
file_removemetadata(struct preloaded_file * fp)1071 file_removemetadata(struct preloaded_file *fp)
1072 {
1073 struct file_metadata *md, *next;
1074
1075 for (md = fp->f_metadata; md != NULL; md = next)
1076 {
1077 next = md->md_next;
1078 free(md);
1079 }
1080 fp->f_metadata = NULL;
1081 }
1082
1083 /*
1084 * Add a buffer to the list of preloaded "files".
1085 */
1086 int
file_addbuf(const char * name,const char * type,size_t len,void * buf)1087 file_addbuf(const char *name, const char *type, size_t len, void *buf)
1088 {
1089 struct preloaded_file *fp;
1090 vm_offset_t dest;
1091
1092 /* We can't load first */
1093 if ((file_findfile(NULL, NULL)) == NULL) {
1094 command_errmsg = "can't load file before kernel";
1095 return (-1);
1096 }
1097
1098 /* Figure out where to load the data. */
1099 dest = loadaddr;
1100 if (archsw.arch_loadaddr != NULL)
1101 dest = archsw.arch_loadaddr(LOAD_RAW, (void *)name, dest);
1102
1103 /* Create & populate control structure */
1104 fp = file_alloc();
1105 if (fp == NULL) {
1106 snprintf(command_errbuf, sizeof (command_errbuf),
1107 "no memory to load %s", name);
1108 return (-1);
1109 }
1110 fp->f_name = strdup(name);
1111 fp->f_type = strdup(type);
1112 fp->f_args = NULL;
1113 fp->f_metadata = NULL;
1114 fp->f_loader = -1;
1115 fp->f_addr = dest;
1116 fp->f_size = len;
1117 if ((fp->f_name == NULL) || (fp->f_type == NULL)) {
1118 snprintf(command_errbuf, sizeof (command_errbuf),
1119 "no memory to load %s", name);
1120 free(fp->f_name);
1121 free(fp->f_type);
1122 return (-1);
1123 }
1124
1125 /* Copy the data in. */
1126 archsw.arch_copyin(buf, fp->f_addr, len);
1127 loadaddr = fp->f_addr + len;
1128
1129 /* Add to the list of loaded files */
1130 file_insert_tail(fp);
1131 return(0);
1132 }
1133
1134 struct file_metadata *
metadata_next(struct file_metadata * md,int type)1135 metadata_next(struct file_metadata *md, int type)
1136 {
1137
1138 if (md == NULL)
1139 return (NULL);
1140 while((md = md->md_next) != NULL)
1141 if (md->md_type == type)
1142 break;
1143 return (md);
1144 }
1145
1146 static char *emptyextlist[] = { "", NULL };
1147
1148 /*
1149 * Check if the given file is in place and return full path to it.
1150 */
1151 static char *
file_lookup(const char * path,const char * name,int namelen,char ** extlist)1152 file_lookup(const char *path, const char *name, int namelen, char **extlist)
1153 {
1154 struct stat st;
1155 char *result, *cp, **cpp;
1156 int pathlen, extlen, len;
1157
1158 pathlen = strlen(path);
1159 extlen = 0;
1160 if (extlist == NULL)
1161 extlist = emptyextlist;
1162 for (cpp = extlist; *cpp; cpp++) {
1163 len = strlen(*cpp);
1164 if (len > extlen)
1165 extlen = len;
1166 }
1167 result = malloc(pathlen + namelen + extlen + 2);
1168 if (result == NULL)
1169 return (NULL);
1170 bcopy(path, result, pathlen);
1171 if (pathlen > 0 && result[pathlen - 1] != '/')
1172 result[pathlen++] = '/';
1173 cp = result + pathlen;
1174 bcopy(name, cp, namelen);
1175 cp += namelen;
1176 for (cpp = extlist; *cpp; cpp++) {
1177 strcpy(cp, *cpp);
1178 if (stat(result, &st) == 0 && S_ISREG(st.st_mode))
1179 return result;
1180 }
1181 free(result);
1182 return NULL;
1183 }
1184
1185 /*
1186 * Check if file name have any qualifiers
1187 */
1188 static int
file_havepath(const char * name)1189 file_havepath(const char *name)
1190 {
1191 const char *cp;
1192
1193 archsw.arch_getdev(NULL, name, &cp);
1194 return (cp != name || strchr(name, '/') != NULL);
1195 }
1196
1197 /*
1198 * Attempt to find the file (name) on the module searchpath.
1199 * If (name) is qualified in any way, we simply check it and
1200 * return it or NULL. If it is not qualified, then we attempt
1201 * to construct a path using entries in the environment variable
1202 * module_path.
1203 *
1204 * The path we return a pointer to need never be freed, as we manage
1205 * it internally.
1206 */
1207 static char *
file_search(const char * name,char ** extlist)1208 file_search(const char *name, char **extlist)
1209 {
1210 struct moduledir *mdp;
1211 struct stat sb;
1212 char *result;
1213 int namelen;
1214
1215 /* Don't look for nothing */
1216 if (name == NULL)
1217 return(NULL);
1218
1219 if (*name == 0)
1220 return(strdup(name));
1221
1222 if (file_havepath(name)) {
1223 /* Qualified, so just see if it exists */
1224 if (stat(name, &sb) == 0)
1225 return(strdup(name));
1226 return(NULL);
1227 }
1228 moduledir_rebuild();
1229 result = NULL;
1230 namelen = strlen(name);
1231 STAILQ_FOREACH(mdp, &moduledir_list, d_link) {
1232 result = file_lookup(mdp->d_path, name, namelen, extlist);
1233 if (result)
1234 break;
1235 }
1236 return(result);
1237 }
1238
1239 #define INT_ALIGN(base, ptr) ptr = \
1240 (base) + roundup2((ptr) - (base), sizeof(int))
1241
1242 static char *
mod_search_hints(struct moduledir * mdp,const char * modname,struct mod_depend * verinfo)1243 mod_search_hints(struct moduledir *mdp, const char *modname,
1244 struct mod_depend *verinfo)
1245 {
1246 u_char *cp, *recptr, *bufend, *best;
1247 char *result;
1248 int *intp, bestver, blen, clen, found, ival, modnamelen, reclen;
1249
1250 moduledir_readhints(mdp);
1251 modnamelen = strlen(modname);
1252 found = 0;
1253 result = NULL;
1254 bestver = 0;
1255 if (mdp->d_hints == NULL)
1256 goto bad;
1257 recptr = mdp->d_hints;
1258 bufend = recptr + mdp->d_hintsz;
1259 clen = blen = 0;
1260 best = cp = NULL;
1261 while (recptr < bufend && !found) {
1262 intp = (int*)recptr;
1263 reclen = *intp++;
1264 ival = *intp++;
1265 cp = (u_char*)intp;
1266 switch (ival) {
1267 case MDT_VERSION:
1268 clen = *cp++;
1269 if (clen != modnamelen || bcmp(cp, modname, clen) != 0)
1270 break;
1271 cp += clen;
1272 INT_ALIGN(mdp->d_hints, cp);
1273 ival = *(int*)cp;
1274 cp += sizeof(int);
1275 clen = *cp++;
1276 if (verinfo == NULL || ival == verinfo->md_ver_preferred) {
1277 found = 1;
1278 break;
1279 }
1280 if (ival >= verinfo->md_ver_minimum &&
1281 ival <= verinfo->md_ver_maximum &&
1282 ival > bestver) {
1283 bestver = ival;
1284 best = cp;
1285 blen = clen;
1286 }
1287 break;
1288 default:
1289 break;
1290 }
1291 recptr += reclen + sizeof(int);
1292 }
1293 /*
1294 * Finally check if KLD is in the place
1295 */
1296 if (found)
1297 result = file_lookup(mdp->d_path, (const char *)cp, clen, NULL);
1298 else if (best)
1299 result = file_lookup(mdp->d_path, (const char *)best, blen, NULL);
1300 bad:
1301 /*
1302 * If nothing found or hints is absent - fallback to the old way
1303 * by using "kldname[.ko]" as module name.
1304 */
1305 if (!found && !bestver && result == NULL)
1306 result = file_lookup(mdp->d_path, modname, modnamelen, kld_ext_list);
1307 return result;
1308 }
1309
1310 static int
getint(void ** ptr)1311 getint(void **ptr)
1312 {
1313 int *p = *ptr;
1314 int rv;
1315
1316 p = (int *)roundup2((intptr_t)p, sizeof(int));
1317 rv = *p++;
1318 *ptr = p;
1319 return rv;
1320 }
1321
1322 static void
getstr(void ** ptr,char * val)1323 getstr(void **ptr, char *val)
1324 {
1325 int *p = *ptr;
1326 char *c = (char *)p;
1327 int len = *(uint8_t *)c;
1328
1329 memcpy(val, c + 1, len);
1330 val[len] = 0;
1331 c += len + 1;
1332 *ptr = (void *)c;
1333 }
1334
1335 static int
pnpval_as_int(const char * val,const char * pnpinfo)1336 pnpval_as_int(const char *val, const char *pnpinfo)
1337 {
1338 int rv;
1339 char key[256];
1340 char *cp;
1341
1342 if (pnpinfo == NULL)
1343 return -1;
1344
1345 cp = strchr(val, ';');
1346 key[0] = ' ';
1347 if (cp == NULL)
1348 strlcpy(key + 1, val, sizeof(key) - 1);
1349 else {
1350 memcpy(key + 1, val, cp - val);
1351 key[cp - val + 1] = '\0';
1352 }
1353 strlcat(key, "=", sizeof(key));
1354 if (strncmp(key + 1, pnpinfo, strlen(key + 1)) == 0)
1355 rv = strtol(pnpinfo + strlen(key + 1), NULL, 0);
1356 else {
1357 cp = strstr(pnpinfo, key);
1358 if (cp == NULL)
1359 rv = -1;
1360 else
1361 rv = strtol(cp + strlen(key), NULL, 0);
1362 }
1363 return rv;
1364 }
1365
1366 static void
quoted_strcpy(char * dst,const char * src)1367 quoted_strcpy(char *dst, const char *src)
1368 {
1369 char q = ' ';
1370
1371 if (*src == '\'' || *src == '"')
1372 q = *src++;
1373 while (*src && *src != q)
1374 *dst++ = *src++; // XXX backtick quoting
1375 *dst++ = '\0';
1376 // XXX overflow
1377 }
1378
1379 static char *
pnpval_as_str(const char * val,const char * pnpinfo)1380 pnpval_as_str(const char *val, const char *pnpinfo)
1381 {
1382 static char retval[256];
1383 char key[256];
1384 char *cp;
1385
1386 if (pnpinfo == NULL) {
1387 *retval = '\0';
1388 return retval;
1389 }
1390
1391 cp = strchr(val, ';');
1392 key[0] = ' ';
1393 if (cp == NULL)
1394 strlcpy(key + 1, val, sizeof(key) - 1);
1395 else {
1396 memcpy(key + 1, val, cp - val);
1397 key[cp - val + 1] = '\0';
1398 }
1399 strlcat(key, "=", sizeof(key));
1400 if (strncmp(key + 1, pnpinfo, strlen(key + 1)) == 0)
1401 quoted_strcpy(retval, pnpinfo + strlen(key + 1));
1402 else {
1403 cp = strstr(pnpinfo, key);
1404 if (cp == NULL)
1405 strcpy(retval, "MISSING");
1406 else
1407 quoted_strcpy(retval, cp + strlen(key));
1408 }
1409 return retval;
1410 }
1411
1412 static char *
devmatch_search_hints(struct moduledir * mdp,const char * bus,const char * dev,const char * pnpinfo)1413 devmatch_search_hints(struct moduledir *mdp, const char *bus, const char *dev, const char *pnpinfo)
1414 {
1415 char val1[256], val2[256];
1416 int ival, len, ents, i, notme, mask, bit, v, found;
1417 void *ptr, *walker, *hints_end;
1418 char *lastmod = NULL, *cp, *s;
1419
1420 moduledir_readhints(mdp);
1421 found = 0;
1422 if (mdp->d_hints == NULL)
1423 goto bad;
1424 walker = mdp->d_hints;
1425 hints_end = walker + mdp->d_hintsz;
1426 while (walker < hints_end && !found) {
1427 len = getint(&walker);
1428 ival = getint(&walker);
1429 ptr = walker;
1430 switch (ival) {
1431 case MDT_VERSION:
1432 getstr(&ptr, val1);
1433 ival = getint(&ptr);
1434 getstr(&ptr, val2);
1435 if (pnp_dump_flag || pnp_verbose_flag)
1436 printf("Version: if %s.%d kmod %s\n", val1, ival, val2);
1437 break;
1438 case MDT_MODULE:
1439 getstr(&ptr, val1);
1440 getstr(&ptr, val2);
1441 if (lastmod)
1442 free(lastmod);
1443 lastmod = strdup(val2);
1444 if (pnp_dump_flag || pnp_verbose_flag)
1445 printf("module %s in %s\n", val1, val1);
1446 break;
1447 case MDT_PNP_INFO:
1448 if (!pnp_dump_flag && !pnp_unbound_flag && lastmod && strcmp(lastmod, "kernel") == 0)
1449 break;
1450 getstr(&ptr, val1);
1451 getstr(&ptr, val2);
1452 ents = getint(&ptr);
1453 if (pnp_dump_flag || pnp_verbose_flag)
1454 printf("PNP info for bus %s format %s %d entries (%s)\n",
1455 val1, val2, ents, lastmod);
1456 if (strcmp(val1, "usb") == 0) {
1457 if (pnp_verbose_flag)
1458 printf("Treating usb as uhub -- bug in source table still?\n");
1459 strcpy(val1, "uhub");
1460 }
1461 if (bus && strcmp(val1, bus) != 0) {
1462 if (pnp_verbose_flag)
1463 printf("Skipped because table for bus %s, looking for %s\n",
1464 val1, bus);
1465 break;
1466 }
1467 for (i = 0; i < ents; i++) {
1468 if (pnp_verbose_flag)
1469 printf("---------- Entry %d ----------\n", i);
1470 if (pnp_dump_flag)
1471 printf(" ");
1472 cp = val2;
1473 notme = 0;
1474 mask = -1;
1475 bit = -1;
1476 do {
1477 switch (*cp) {
1478 /* All integer fields */
1479 case 'I':
1480 case 'J':
1481 case 'G':
1482 case 'L':
1483 case 'M':
1484 ival = getint(&ptr);
1485 if (pnp_dump_flag) {
1486 printf("%#x:", ival);
1487 break;
1488 }
1489 if (bit >= 0 && ((1 << bit) & mask) == 0)
1490 break;
1491 v = pnpval_as_int(cp + 2, pnpinfo);
1492 if (pnp_verbose_flag)
1493 printf("Matching %s (%c) table=%#x tomatch=%#x\n",
1494 cp + 2, *cp, v, ival);
1495 switch (*cp) {
1496 case 'J':
1497 if (ival == -1)
1498 break;
1499 /*FALLTHROUGH*/
1500 case 'I':
1501 if (v != ival)
1502 notme++;
1503 break;
1504 case 'G':
1505 if (v < ival)
1506 notme++;
1507 break;
1508 case 'L':
1509 if (v > ival)
1510 notme++;
1511 break;
1512 case 'M':
1513 mask = ival;
1514 break;
1515 }
1516 break;
1517 /* String fields */
1518 case 'D':
1519 case 'Z':
1520 getstr(&ptr, val1);
1521 if (pnp_dump_flag) {
1522 printf("'%s':", val1);
1523 break;
1524 }
1525 if (*cp == 'D')
1526 break;
1527 s = pnpval_as_str(cp + 2, pnpinfo);
1528 if (strcmp(s, val1) != 0)
1529 notme++;
1530 break;
1531 /* Key override fields, required to be last in the string */
1532 case 'T':
1533 /*
1534 * This is imperfect and only does one key and will be redone
1535 * to be more general for multiple keys. Currently, nothing
1536 * does that.
1537 */
1538 if (pnp_dump_flag) /* No per-row data stored */
1539 break;
1540 if (cp[strlen(cp) - 1] == ';') /* Skip required ; at end */
1541 cp[strlen(cp) - 1] = '\0'; /* in case it's not there */
1542 if ((s = strstr(pnpinfo, cp + 2)) == NULL)
1543 notme++;
1544 else if (s > pnpinfo && s[-1] != ' ')
1545 notme++;
1546 break;
1547 default:
1548 printf("Unknown field type %c\n:", *cp);
1549 break;
1550 }
1551 bit++;
1552 cp = strchr(cp, ';');
1553 if (cp)
1554 cp++;
1555 } while (cp && *cp);
1556 if (pnp_dump_flag)
1557 printf("\n");
1558 else if (!notme) {
1559 if (!pnp_unbound_flag) {
1560 if (pnp_verbose_flag)
1561 printf("Matches --- %s ---\n", lastmod);
1562 }
1563 found++;
1564 }
1565 }
1566 break;
1567 default:
1568 break;
1569 }
1570 walker = (void *)(len - sizeof(int) + (intptr_t)walker);
1571 }
1572 if (pnp_unbound_flag && found == 0 && *pnpinfo) {
1573 if (pnp_verbose_flag)
1574 printf("------------------------- ");
1575 printf("%s on %s pnpinfo %s", *dev ? dev : "unattached", bus, pnpinfo);
1576 if (pnp_verbose_flag)
1577 printf(" -------------------------");
1578 printf("\n");
1579 }
1580 if (found != 0)
1581 return (lastmod);
1582 free(lastmod);
1583
1584 bad:
1585 return (NULL);
1586 }
1587
1588 /*
1589 * Attempt to locate the file containing the module (name)
1590 */
1591 static char *
mod_searchmodule(char * name,struct mod_depend * verinfo)1592 mod_searchmodule(char *name, struct mod_depend *verinfo)
1593 {
1594 struct moduledir *mdp;
1595 char *result;
1596
1597 moduledir_rebuild();
1598 /*
1599 * Now we ready to lookup module in the given directories
1600 */
1601 result = NULL;
1602 STAILQ_FOREACH(mdp, &moduledir_list, d_link) {
1603 result = mod_search_hints(mdp, name, verinfo);
1604 if (result)
1605 break;
1606 }
1607
1608 return(result);
1609 }
1610
1611 static char *
mod_searchmodule_pnpinfo(const char * bus,const char * pnpinfo)1612 mod_searchmodule_pnpinfo(const char *bus, const char *pnpinfo)
1613 {
1614 struct moduledir *mdp;
1615 char *result;
1616
1617 moduledir_rebuild();
1618 /*
1619 * Now we ready to lookup module in the given directories
1620 */
1621 result = NULL;
1622 STAILQ_FOREACH(mdp, &moduledir_list, d_link) {
1623 result = devmatch_search_hints(mdp, bus, NULL, pnpinfo);
1624 if (result)
1625 break;
1626 }
1627
1628 return(result);
1629 }
1630
1631 int
file_addmodule(struct preloaded_file * fp,char * modname,int version,struct kernel_module ** newmp)1632 file_addmodule(struct preloaded_file *fp, char *modname, int version,
1633 struct kernel_module **newmp)
1634 {
1635 struct kernel_module *mp;
1636 struct mod_depend mdepend;
1637
1638 bzero(&mdepend, sizeof(mdepend));
1639 mdepend.md_ver_preferred = version;
1640 mp = file_findmodule(fp, modname, &mdepend);
1641 if (mp)
1642 return (EEXIST);
1643 mp = calloc(1, sizeof(struct kernel_module));
1644 if (mp == NULL)
1645 return (ENOMEM);
1646 mp->m_name = strdup(modname);
1647 if (mp->m_name == NULL) {
1648 free(mp);
1649 return (ENOMEM);
1650 }
1651 mp->m_version = version;
1652 mp->m_fp = fp;
1653 mp->m_next = fp->f_modules;
1654 fp->f_modules = mp;
1655 if (newmp)
1656 *newmp = mp;
1657 return (0);
1658 }
1659
1660 /*
1661 * Throw a file away
1662 */
1663 void
file_discard(struct preloaded_file * fp)1664 file_discard(struct preloaded_file *fp)
1665 {
1666 struct file_metadata *md, *md1;
1667 struct kernel_module *mp, *mp1;
1668 if (fp == NULL)
1669 return;
1670 md = fp->f_metadata;
1671 while (md) {
1672 md1 = md;
1673 md = md->md_next;
1674 free(md1);
1675 }
1676 mp = fp->f_modules;
1677 while (mp) {
1678 free(mp->m_name);
1679 mp1 = mp;
1680 mp = mp->m_next;
1681 free(mp1);
1682 }
1683 free(fp->f_name);
1684 free(fp->f_type);
1685 free(fp->f_args);
1686 free(fp);
1687 }
1688
1689 /*
1690 * Allocate a new file; must be used instead of malloc()
1691 * to ensure safe initialisation.
1692 */
1693 struct preloaded_file *
file_alloc(void)1694 file_alloc(void)
1695 {
1696
1697 return (calloc(1, sizeof(struct preloaded_file)));
1698 }
1699
1700 /*
1701 * Add a module to the chain
1702 */
1703 static void
file_insert_tail(struct preloaded_file * fp)1704 file_insert_tail(struct preloaded_file *fp)
1705 {
1706 struct preloaded_file *cm;
1707
1708 /* Append to list of loaded file */
1709 fp->f_next = NULL;
1710 if (preloaded_files == NULL) {
1711 preloaded_files = fp;
1712 } else {
1713 for (cm = preloaded_files; cm->f_next != NULL; cm = cm->f_next)
1714 ;
1715 cm->f_next = fp;
1716 }
1717 }
1718
1719 /*
1720 * Remove module from the chain
1721 */
1722 static void
file_remove_impl(struct preloaded_file * fp,bool keep_tail)1723 file_remove_impl(struct preloaded_file *fp, bool keep_tail)
1724 {
1725 struct preloaded_file *cm, *next;
1726
1727 if (preloaded_files == NULL)
1728 return;
1729
1730 if (keep_tail)
1731 next = fp->f_next;
1732 else
1733 next = NULL;
1734
1735 if (preloaded_files == fp) {
1736 preloaded_files = next;
1737 return;
1738 }
1739
1740 for (cm = preloaded_files; cm->f_next != NULL; cm = cm->f_next) {
1741 if (cm->f_next == fp) {
1742 cm->f_next = next;
1743 return;
1744 }
1745 }
1746 }
1747
1748 static void
file_remove(struct preloaded_file * fp)1749 file_remove(struct preloaded_file *fp)
1750 {
1751
1752 file_remove_impl(fp, true);
1753 }
1754
1755 static void
file_remove_tail(struct preloaded_file * fp)1756 file_remove_tail(struct preloaded_file *fp)
1757 {
1758
1759 file_remove_impl(fp, false);
1760 }
1761
1762 static char *
moduledir_fullpath(struct moduledir * mdp,const char * fname)1763 moduledir_fullpath(struct moduledir *mdp, const char *fname)
1764 {
1765 char *cp;
1766
1767 cp = malloc(strlen(mdp->d_path) + strlen(fname) + 2);
1768 if (cp == NULL)
1769 return NULL;
1770 strcpy(cp, mdp->d_path);
1771 strcat(cp, "/");
1772 strcat(cp, fname);
1773 return (cp);
1774 }
1775
1776 /*
1777 * Read linker.hints file into memory performing some sanity checks.
1778 */
1779 static void
moduledir_readhints(struct moduledir * mdp)1780 moduledir_readhints(struct moduledir *mdp)
1781 {
1782 struct stat st;
1783 char *path;
1784 int fd, size, version;
1785
1786 if (mdp->d_hints != NULL || (mdp->d_flags & MDIR_NOHINTS))
1787 return;
1788 path = moduledir_fullpath(mdp, "linker.hints");
1789 if (stat(path, &st) != 0 ||
1790 st.st_size < (ssize_t)(sizeof(version) + sizeof(int)) ||
1791 st.st_size > LINKER_HINTS_MAX || (fd = open(path, O_RDONLY)) < 0) {
1792 free(path);
1793 mdp->d_flags |= MDIR_NOHINTS;
1794 return;
1795 }
1796 free(path);
1797 size = read(fd, &version, sizeof(version));
1798 if (size != sizeof(version) || version != LINKER_HINTS_VERSION)
1799 goto bad;
1800 size = st.st_size - size;
1801 mdp->d_hints = malloc(size);
1802 if (mdp->d_hints == NULL)
1803 goto bad;
1804 if (read(fd, mdp->d_hints, size) != size)
1805 goto bad;
1806 mdp->d_hintsz = size;
1807 close(fd);
1808 return;
1809 bad:
1810 close(fd);
1811 free(mdp->d_hints);
1812 mdp->d_hints = NULL;
1813 mdp->d_flags |= MDIR_NOHINTS;
1814 return;
1815 }
1816
1817 /*
1818 * Extract directories from the ';' separated list, remove duplicates.
1819 */
1820 static void
moduledir_rebuild(void)1821 moduledir_rebuild(void)
1822 {
1823 struct moduledir *mdp, *mtmp;
1824 const char *path, *cp, *ep;
1825 size_t cplen;
1826
1827 path = getenv("module_path");
1828 if (path == NULL)
1829 path = default_searchpath;
1830 /*
1831 * Rebuild list of module directories if it changed
1832 */
1833 STAILQ_FOREACH(mdp, &moduledir_list, d_link)
1834 mdp->d_flags |= MDIR_REMOVED;
1835
1836 for (ep = path; *ep != 0; ep++) {
1837 cp = ep;
1838 for (; *ep != 0 && *ep != ';'; ep++)
1839 ;
1840 /*
1841 * Ignore trailing slashes
1842 */
1843 for (cplen = ep - cp; cplen > 1 && cp[cplen - 1] == '/'; cplen--)
1844 ;
1845 STAILQ_FOREACH(mdp, &moduledir_list, d_link) {
1846 if (strlen(mdp->d_path) != cplen || bcmp(cp, mdp->d_path, cplen) != 0)
1847 continue;
1848 mdp->d_flags &= ~MDIR_REMOVED;
1849 break;
1850 }
1851 if (mdp == NULL) {
1852 mdp = malloc(sizeof(*mdp) + cplen + 1);
1853 if (mdp == NULL)
1854 return;
1855 mdp->d_path = (char*)(mdp + 1);
1856 bcopy(cp, mdp->d_path, cplen);
1857 mdp->d_path[cplen] = 0;
1858 mdp->d_hints = NULL;
1859 mdp->d_flags = 0;
1860 STAILQ_INSERT_TAIL(&moduledir_list, mdp, d_link);
1861 }
1862 if (*ep == 0)
1863 break;
1864 }
1865 /*
1866 * Delete unused directories if any
1867 */
1868 mdp = STAILQ_FIRST(&moduledir_list);
1869 while (mdp) {
1870 if ((mdp->d_flags & MDIR_REMOVED) == 0) {
1871 mdp = STAILQ_NEXT(mdp, d_link);
1872 } else {
1873 free(mdp->d_hints);
1874 mtmp = mdp;
1875 mdp = STAILQ_NEXT(mdp, d_link);
1876 STAILQ_REMOVE(&moduledir_list, mtmp, moduledir, d_link);
1877 free(mtmp);
1878 }
1879 }
1880 return;
1881 }
1882