1 /*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * Copyright (c) 1998 Peter Wemm <peter@freebsd.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/endian.h> 33 #include <sys/exec.h> 34 #include <sys/linker.h> 35 #include <sys/module.h> 36 #include <sys/stdint.h> 37 #include <string.h> 38 #include <machine/elf.h> 39 #include <stand.h> 40 #define FREEBSD_ELF 41 #include <sys/link_elf.h> 42 43 #include "bootstrap.h" 44 45 #define COPYOUT(s,d,l) archsw.arch_copyout((vm_offset_t)(s), d, l) 46 47 #if defined(__i386__) && __ELF_WORD_SIZE == 64 48 #undef ELF_TARG_CLASS 49 #undef ELF_TARG_MACH 50 #define ELF_TARG_CLASS ELFCLASS64 51 #define ELF_TARG_MACH EM_X86_64 52 #endif 53 54 typedef struct elf_file { 55 Elf_Phdr *ph; 56 Elf_Ehdr *ehdr; 57 Elf_Sym *symtab; 58 Elf_Hashelt *hashtab; 59 Elf_Hashelt nbuckets; 60 Elf_Hashelt nchains; 61 Elf_Hashelt *buckets; 62 Elf_Hashelt *chains; 63 Elf_Rel *rel; 64 size_t relsz; 65 Elf_Rela *rela; 66 size_t relasz; 67 char *strtab; 68 size_t strsz; 69 int fd; 70 caddr_t firstpage; 71 size_t firstlen; 72 int kernel; 73 uint64_t off; 74 #ifdef LOADER_VERIEXEC_VECTX 75 struct vectx *vctx; 76 #endif 77 } *elf_file_t; 78 79 #ifdef LOADER_VERIEXEC_VECTX 80 #define VECTX_HANDLE(ef) (ef)->vctx 81 #else 82 #define VECTX_HANDLE(ef) (ef)->fd 83 #endif 84 85 static int __elfN(loadimage)(struct preloaded_file *mp, elf_file_t ef, 86 uint64_t loadaddr); 87 static int __elfN(lookup_symbol)(elf_file_t ef, const char* name, 88 Elf_Sym *sym, unsigned char type); 89 static int __elfN(reloc_ptr)(struct preloaded_file *mp, elf_file_t ef, 90 Elf_Addr p, void *val, size_t len); 91 static int __elfN(parse_modmetadata)(struct preloaded_file *mp, elf_file_t ef, 92 Elf_Addr p_start, Elf_Addr p_end); 93 static symaddr_fn __elfN(symaddr); 94 static char *fake_modname(const char *name); 95 96 const char *__elfN(kerneltype) = "elf kernel"; 97 const char *__elfN(moduletype) = "elf module"; 98 99 uint64_t __elfN(relocation_offset) = 0; 100 101 extern void elf_wrong_field_size(void); 102 #define CONVERT_FIELD(b, f, e) \ 103 switch (sizeof((b)->f)) { \ 104 case 2: \ 105 (b)->f = e ## 16toh((b)->f); \ 106 break; \ 107 case 4: \ 108 (b)->f = e ## 32toh((b)->f); \ 109 break; \ 110 case 8: \ 111 (b)->f = e ## 64toh((b)->f); \ 112 break; \ 113 default: \ 114 /* Force a link time error. */ \ 115 elf_wrong_field_size(); \ 116 break; \ 117 } 118 119 #define CONVERT_SWITCH(h, d, f) \ 120 switch ((h)->e_ident[EI_DATA]) { \ 121 case ELFDATA2MSB: \ 122 f(d, be); \ 123 break; \ 124 case ELFDATA2LSB: \ 125 f(d, le); \ 126 break; \ 127 default: \ 128 return (EINVAL); \ 129 } 130 131 132 static int elf_header_convert(Elf_Ehdr *ehdr) 133 { 134 /* 135 * Fixup ELF header endianness. 136 * 137 * The Xhdr structure was loaded using block read call to optimize file 138 * accesses. It might happen, that the endianness of the system memory 139 * is different that endianness of the ELF header. Swap fields here to 140 * guarantee that Xhdr always contain valid data regardless of 141 * architecture. 142 */ 143 #define HEADER_FIELDS(b, e) \ 144 CONVERT_FIELD(b, e_type, e); \ 145 CONVERT_FIELD(b, e_machine, e); \ 146 CONVERT_FIELD(b, e_version, e); \ 147 CONVERT_FIELD(b, e_entry, e); \ 148 CONVERT_FIELD(b, e_phoff, e); \ 149 CONVERT_FIELD(b, e_shoff, e); \ 150 CONVERT_FIELD(b, e_flags, e); \ 151 CONVERT_FIELD(b, e_ehsize, e); \ 152 CONVERT_FIELD(b, e_phentsize, e); \ 153 CONVERT_FIELD(b, e_phnum, e); \ 154 CONVERT_FIELD(b, e_shentsize, e); \ 155 CONVERT_FIELD(b, e_shnum, e); \ 156 CONVERT_FIELD(b, e_shstrndx, e) 157 158 CONVERT_SWITCH(ehdr, ehdr, HEADER_FIELDS); 159 160 #undef HEADER_FIELDS 161 162 return (0); 163 } 164 165 static int elf_program_header_convert(const Elf_Ehdr *ehdr, Elf_Phdr *phdr) 166 { 167 #define PROGRAM_HEADER_FIELDS(b, e) \ 168 CONVERT_FIELD(b, p_type, e); \ 169 CONVERT_FIELD(b, p_flags, e); \ 170 CONVERT_FIELD(b, p_offset, e); \ 171 CONVERT_FIELD(b, p_vaddr, e); \ 172 CONVERT_FIELD(b, p_paddr, e); \ 173 CONVERT_FIELD(b, p_filesz, e); \ 174 CONVERT_FIELD(b, p_memsz, e); \ 175 CONVERT_FIELD(b, p_align, e) 176 177 CONVERT_SWITCH(ehdr, phdr, PROGRAM_HEADER_FIELDS); 178 179 #undef PROGRAM_HEADER_FIELDS 180 181 return (0); 182 } 183 184 static int elf_section_header_convert(const Elf_Ehdr *ehdr, Elf_Shdr *shdr) 185 { 186 #define SECTION_HEADER_FIELDS(b, e) \ 187 CONVERT_FIELD(b, sh_name, e); \ 188 CONVERT_FIELD(b, sh_type, e); \ 189 CONVERT_FIELD(b, sh_link, e); \ 190 CONVERT_FIELD(b, sh_info, e); \ 191 CONVERT_FIELD(b, sh_flags, e); \ 192 CONVERT_FIELD(b, sh_addr, e); \ 193 CONVERT_FIELD(b, sh_offset, e); \ 194 CONVERT_FIELD(b, sh_size, e); \ 195 CONVERT_FIELD(b, sh_addralign, e); \ 196 CONVERT_FIELD(b, sh_entsize, e) 197 198 CONVERT_SWITCH(ehdr, shdr, SECTION_HEADER_FIELDS); 199 200 #undef SECTION_HEADER_FIELDS 201 202 return (0); 203 } 204 #undef CONVERT_SWITCH 205 #undef CONVERT_FIELD 206 207 208 #ifdef __amd64__ 209 static bool 210 is_kernphys_relocatable(elf_file_t ef) 211 { 212 Elf_Sym sym; 213 214 return (__elfN(lookup_symbol)(ef, "kernphys", &sym, STT_OBJECT) == 0 && 215 sym.st_size == 8); 216 } 217 #endif 218 219 #ifdef __i386__ 220 static bool 221 is_tg_kernel_support(struct preloaded_file *fp, elf_file_t ef) 222 { 223 Elf_Sym sym; 224 Elf_Addr p_start, p_end, v, p; 225 char vd_name[16]; 226 int error; 227 228 if (__elfN(lookup_symbol)(ef, "__start_set_vt_drv_set", &sym, STT_NOTYPE) != 0) 229 return (false); 230 p_start = sym.st_value + ef->off; 231 if (__elfN(lookup_symbol)(ef, "__stop_set_vt_drv_set", &sym, STT_NOTYPE) != 0) 232 return (false); 233 p_end = sym.st_value + ef->off; 234 235 /* 236 * Walk through vt_drv_set, each vt driver structure starts with 237 * static 16 chars for driver name. If we have "vbefb", return true. 238 */ 239 for (p = p_start; p < p_end; p += sizeof(Elf_Addr)) { 240 COPYOUT(p, &v, sizeof(v)); 241 242 error = __elfN(reloc_ptr)(fp, ef, p, &v, sizeof(v)); 243 if (error == EOPNOTSUPP) 244 v += ef->off; 245 else if (error != 0) 246 return (false); 247 COPYOUT(v, &vd_name, sizeof(vd_name)); 248 if (strncmp(vd_name, "vbefb", sizeof(vd_name)) == 0) 249 return (true); 250 } 251 252 return (false); 253 } 254 #endif 255 256 static int 257 __elfN(load_elf_header)(char *filename, elf_file_t ef) 258 { 259 ssize_t bytes_read; 260 Elf_Ehdr *ehdr; 261 int err; 262 263 /* 264 * Open the image, read and validate the ELF header 265 */ 266 if (filename == NULL) /* can't handle nameless */ 267 return (EFTYPE); 268 if ((ef->fd = open(filename, O_RDONLY)) == -1) 269 return (errno); 270 ef->firstpage = malloc(PAGE_SIZE); 271 if (ef->firstpage == NULL) { 272 close(ef->fd); 273 return (ENOMEM); 274 } 275 preload(ef->fd); 276 #ifdef LOADER_VERIEXEC_VECTX 277 { 278 int verror; 279 280 ef->vctx = vectx_open(ef->fd, filename, 0L, NULL, &verror, __func__); 281 if (verror) { 282 printf("Unverified %s: %s\n", filename, ve_error_get()); 283 close(ef->fd); 284 free(ef->vctx); 285 return (EAUTH); 286 } 287 } 288 #endif 289 bytes_read = VECTX_READ(VECTX_HANDLE(ef), ef->firstpage, PAGE_SIZE); 290 ef->firstlen = (size_t)bytes_read; 291 if (bytes_read < 0 || ef->firstlen <= sizeof(Elf_Ehdr)) { 292 err = EFTYPE; /* could be EIO, but may be small file */ 293 goto error; 294 } 295 ehdr = ef->ehdr = (Elf_Ehdr *)ef->firstpage; 296 297 /* Is it ELF? */ 298 if (!IS_ELF(*ehdr)) { 299 err = EFTYPE; 300 goto error; 301 } 302 303 if (ehdr->e_ident[EI_CLASS] != ELF_TARG_CLASS || /* Layout ? */ 304 ehdr->e_ident[EI_DATA] != ELF_TARG_DATA || 305 ehdr->e_ident[EI_VERSION] != EV_CURRENT) /* Version ? */ { 306 err = EFTYPE; 307 goto error; 308 } 309 310 err = elf_header_convert(ehdr); 311 if (err) 312 goto error; 313 314 if (ehdr->e_version != EV_CURRENT || ehdr->e_machine != ELF_TARG_MACH) { 315 /* Machine ? */ 316 err = EFTYPE; 317 goto error; 318 } 319 320 #if defined(LOADER_VERIEXEC) && !defined(LOADER_VERIEXEC_VECTX) 321 if (verify_file(ef->fd, filename, bytes_read, VE_MUST, __func__) < 0) { 322 err = EAUTH; 323 goto error; 324 } 325 #endif 326 return (0); 327 328 error: 329 if (ef->firstpage != NULL) { 330 free(ef->firstpage); 331 ef->firstpage = NULL; 332 } 333 if (ef->fd != -1) { 334 #ifdef LOADER_VERIEXEC_VECTX 335 free(ef->vctx); 336 #endif 337 close(ef->fd); 338 ef->fd = -1; 339 } 340 return (err); 341 } 342 343 /* 344 * Attempt to load the file (file) as an ELF module. It will be stored at 345 * (dest), and a pointer to a module structure describing the loaded object 346 * will be saved in (result). 347 */ 348 int 349 __elfN(loadfile)(char *filename, uint64_t dest, struct preloaded_file **result) 350 { 351 return (__elfN(loadfile_raw)(filename, dest, result, 0)); 352 } 353 354 int 355 __elfN(loadfile_raw)(char *filename, uint64_t dest, 356 struct preloaded_file **result, int multiboot) 357 { 358 struct preloaded_file *fp, *kfp; 359 struct elf_file ef; 360 Elf_Ehdr *ehdr; 361 int err; 362 363 fp = NULL; 364 bzero(&ef, sizeof(struct elf_file)); 365 ef.fd = -1; 366 367 err = __elfN(load_elf_header)(filename, &ef); 368 if (err != 0) 369 return (err); 370 371 ehdr = ef.ehdr; 372 373 /* 374 * Check to see what sort of module we are. 375 */ 376 kfp = file_findfile(NULL, __elfN(kerneltype)); 377 #ifdef __powerpc__ 378 /* 379 * Kernels can be ET_DYN, so just assume the first loaded object is the 380 * kernel. This assumption will be checked later. 381 */ 382 if (kfp == NULL) 383 ef.kernel = 1; 384 #endif 385 if (ef.kernel || ehdr->e_type == ET_EXEC) { 386 /* Looks like a kernel */ 387 if (kfp != NULL) { 388 printf("elf" __XSTRING(__ELF_WORD_SIZE) 389 "_loadfile: kernel already loaded\n"); 390 err = EPERM; 391 goto oerr; 392 } 393 /* 394 * Calculate destination address based on kernel entrypoint. 395 * 396 * For ARM, the destination address is independent of any values 397 * in the elf header (an ARM kernel can be loaded at any 2MB 398 * boundary), so we leave dest set to the value calculated by 399 * archsw.arch_loadaddr() and passed in to this function. 400 */ 401 #ifndef __arm__ 402 if (ehdr->e_type == ET_EXEC) 403 dest = (ehdr->e_entry & ~PAGE_MASK); 404 #endif 405 if ((ehdr->e_entry & ~PAGE_MASK) == 0) { 406 printf("elf" __XSTRING(__ELF_WORD_SIZE) 407 "_loadfile: not a kernel (maybe static binary?)\n"); 408 err = EPERM; 409 goto oerr; 410 } 411 ef.kernel = 1; 412 413 } else if (ehdr->e_type == ET_DYN) { 414 /* Looks like a kld module */ 415 if (multiboot != 0) { 416 printf("elf" __XSTRING(__ELF_WORD_SIZE) 417 "_loadfile: can't load module as multiboot\n"); 418 err = EPERM; 419 goto oerr; 420 } 421 if (kfp == NULL) { 422 printf("elf" __XSTRING(__ELF_WORD_SIZE) 423 "_loadfile: can't load module before kernel\n"); 424 err = EPERM; 425 goto oerr; 426 } 427 if (strcmp(__elfN(kerneltype), kfp->f_type)) { 428 printf("elf" __XSTRING(__ELF_WORD_SIZE) 429 "_loadfile: can't load module with kernel type '%s'\n", 430 kfp->f_type); 431 err = EPERM; 432 goto oerr; 433 } 434 /* Looks OK, got ahead */ 435 ef.kernel = 0; 436 437 } else { 438 err = EFTYPE; 439 goto oerr; 440 } 441 442 if (archsw.arch_loadaddr != NULL) 443 dest = archsw.arch_loadaddr(LOAD_ELF, ehdr, dest); 444 else 445 dest = roundup(dest, PAGE_SIZE); 446 447 /* 448 * Ok, we think we should handle this. 449 */ 450 fp = file_alloc(); 451 if (fp == NULL) { 452 printf("elf" __XSTRING(__ELF_WORD_SIZE) 453 "_loadfile: cannot allocate module info\n"); 454 err = EPERM; 455 goto out; 456 } 457 if (ef.kernel == 1 && multiboot == 0) 458 setenv("kernelname", filename, 1); 459 fp->f_name = strdup(filename); 460 if (multiboot == 0) 461 fp->f_type = strdup(ef.kernel ? 462 __elfN(kerneltype) : __elfN(moduletype)); 463 else 464 fp->f_type = strdup("elf multiboot kernel"); 465 466 #ifdef ELF_VERBOSE 467 if (ef.kernel) 468 printf("%s entry at 0x%jx\n", filename, 469 (uintmax_t)ehdr->e_entry); 470 #else 471 printf("%s ", filename); 472 #endif 473 474 fp->f_size = __elfN(loadimage)(fp, &ef, dest); 475 if (fp->f_size == 0 || fp->f_addr == 0) 476 goto ioerr; 477 478 /* save exec header as metadata */ 479 file_addmetadata(fp, MODINFOMD_ELFHDR, sizeof(*ehdr), ehdr); 480 481 /* Load OK, return module pointer */ 482 *result = (struct preloaded_file *)fp; 483 err = 0; 484 #ifdef __amd64__ 485 fp->f_kernphys_relocatable = multiboot || is_kernphys_relocatable(&ef); 486 #endif 487 #ifdef __i386__ 488 fp->f_tg_kernel_support = is_tg_kernel_support(fp, &ef); 489 #endif 490 goto out; 491 492 ioerr: 493 err = EIO; 494 oerr: 495 file_discard(fp); 496 out: 497 if (ef.firstpage) 498 free(ef.firstpage); 499 if (ef.fd != -1) { 500 #ifdef LOADER_VERIEXEC_VECTX 501 if (!err && ef.vctx) { 502 int verror; 503 504 verror = vectx_close(ef.vctx, VE_MUST, __func__); 505 if (verror) { 506 err = EAUTH; 507 file_discard(fp); 508 } 509 } 510 #endif 511 close(ef.fd); 512 } 513 return (err); 514 } 515 516 /* 517 * With the file (fd) open on the image, and (ehdr) containing 518 * the Elf header, load the image at (off) 519 */ 520 static int 521 __elfN(loadimage)(struct preloaded_file *fp, elf_file_t ef, uint64_t off) 522 { 523 int i; 524 u_int j; 525 Elf_Ehdr *ehdr; 526 Elf_Phdr *phdr, *php; 527 Elf_Shdr *shdr; 528 char *shstr; 529 int ret; 530 vm_offset_t firstaddr; 531 vm_offset_t lastaddr; 532 size_t chunk; 533 ssize_t result; 534 Elf_Addr ssym, esym; 535 Elf_Dyn *dp; 536 Elf_Addr adp; 537 Elf_Addr ctors; 538 int ndp; 539 int symstrindex; 540 int symtabindex; 541 Elf_Size size; 542 u_int fpcopy; 543 Elf_Sym sym; 544 Elf_Addr p_start, p_end; 545 546 dp = NULL; 547 shdr = NULL; 548 ret = 0; 549 firstaddr = lastaddr = 0; 550 ehdr = ef->ehdr; 551 #ifdef __powerpc__ 552 if (ef->kernel) { 553 #else 554 if (ehdr->e_type == ET_EXEC) { 555 #endif 556 #if defined(__i386__) || defined(__amd64__) 557 #if __ELF_WORD_SIZE == 64 558 /* x86_64 relocates after locore */ 559 off = - (off & 0xffffffffff000000ull); 560 #else 561 /* i386 relocates after locore */ 562 off = - (off & 0xff000000u); 563 #endif 564 #elif defined(__powerpc__) 565 /* 566 * On the purely virtual memory machines like e500, the kernel 567 * is linked against its final VA range, which is most often 568 * not available at the loader stage, but only after kernel 569 * initializes and completes its VM settings. In such cases we 570 * cannot use p_vaddr field directly to load ELF segments, but 571 * put them at some 'load-time' locations. 572 */ 573 if (off & 0xf0000000u) { 574 off = -(off & 0xf0000000u); 575 /* 576 * XXX the physical load address should not be 577 * hardcoded. Note that the Book-E kernel assumes that 578 * it's loaded at a 16MB boundary for now... 579 */ 580 off += 0x01000000; 581 } 582 ehdr->e_entry += off; 583 #ifdef ELF_VERBOSE 584 printf("Converted entry 0x%jx\n", (uintmax_t)ehdr->e_entry); 585 #endif 586 #elif defined(__arm__) && !defined(EFI) 587 /* 588 * The elf headers in arm kernels specify virtual addresses in 589 * all header fields, even the ones that should be physical 590 * addresses. We assume the entry point is in the first page, 591 * and masking the page offset will leave us with the virtual 592 * address the kernel was linked at. We subtract that from the 593 * load offset, making 'off' into the value which, when added 594 * to a virtual address in an elf header, translates it to a 595 * physical address. We do the va->pa conversion on the entry 596 * point address in the header now, so that later we can launch 597 * the kernel by just jumping to that address. 598 * 599 * When booting from UEFI the copyin and copyout functions 600 * handle adjusting the location relative to the first virtual 601 * address. Because of this there is no need to adjust the 602 * offset or entry point address as these will both be handled 603 * by the efi code. 604 */ 605 off -= ehdr->e_entry & ~PAGE_MASK; 606 ehdr->e_entry += off; 607 #ifdef ELF_VERBOSE 608 printf("ehdr->e_entry 0x%jx, va<->pa off %llx\n", 609 (uintmax_t)ehdr->e_entry, off); 610 #endif 611 #else 612 off = 0; /* other archs use direct mapped kernels */ 613 #endif 614 } 615 ef->off = off; 616 617 if (ef->kernel) 618 __elfN(relocation_offset) = off; 619 620 if ((ehdr->e_phoff + ehdr->e_phnum * sizeof(*phdr)) > ef->firstlen) { 621 printf("elf" __XSTRING(__ELF_WORD_SIZE) 622 "_loadimage: program header not within first page\n"); 623 goto out; 624 } 625 phdr = (Elf_Phdr *)(ef->firstpage + ehdr->e_phoff); 626 627 for (i = 0; i < ehdr->e_phnum; i++) { 628 if (elf_program_header_convert(ehdr, phdr)) 629 continue; 630 631 /* We want to load PT_LOAD segments only.. */ 632 if (phdr[i].p_type != PT_LOAD) 633 continue; 634 635 #ifdef ELF_VERBOSE 636 printf("Segment: 0x%lx@0x%lx -> 0x%lx-0x%lx", 637 (long)phdr[i].p_filesz, (long)phdr[i].p_offset, 638 (long)(phdr[i].p_vaddr + off), 639 (long)(phdr[i].p_vaddr + off + phdr[i].p_memsz - 1)); 640 #else 641 if ((phdr[i].p_flags & PF_W) == 0) { 642 printf("text=0x%lx ", (long)phdr[i].p_filesz); 643 } else { 644 printf("data=0x%lx", (long)phdr[i].p_filesz); 645 if (phdr[i].p_filesz < phdr[i].p_memsz) 646 printf("+0x%lx", (long)(phdr[i].p_memsz - 647 phdr[i].p_filesz)); 648 printf(" "); 649 } 650 #endif 651 fpcopy = 0; 652 if (ef->firstlen > phdr[i].p_offset) { 653 fpcopy = ef->firstlen - phdr[i].p_offset; 654 archsw.arch_copyin(ef->firstpage + phdr[i].p_offset, 655 phdr[i].p_vaddr + off, fpcopy); 656 } 657 if (phdr[i].p_filesz > fpcopy) { 658 if (kern_pread(VECTX_HANDLE(ef), 659 phdr[i].p_vaddr + off + fpcopy, 660 phdr[i].p_filesz - fpcopy, 661 phdr[i].p_offset + fpcopy) != 0) { 662 printf("\nelf" __XSTRING(__ELF_WORD_SIZE) 663 "_loadimage: read failed\n"); 664 goto out; 665 } 666 } 667 /* clear space from oversized segments; eg: bss */ 668 if (phdr[i].p_filesz < phdr[i].p_memsz) { 669 #ifdef ELF_VERBOSE 670 printf(" (bss: 0x%lx-0x%lx)", 671 (long)(phdr[i].p_vaddr + off + phdr[i].p_filesz), 672 (long)(phdr[i].p_vaddr + off + phdr[i].p_memsz -1)); 673 #endif 674 675 kern_bzero(phdr[i].p_vaddr + off + phdr[i].p_filesz, 676 phdr[i].p_memsz - phdr[i].p_filesz); 677 } 678 #ifdef ELF_VERBOSE 679 printf("\n"); 680 #endif 681 682 if (archsw.arch_loadseg != NULL) 683 archsw.arch_loadseg(ehdr, phdr + i, off); 684 685 if (firstaddr == 0 || firstaddr > (phdr[i].p_vaddr + off)) 686 firstaddr = phdr[i].p_vaddr + off; 687 if (lastaddr == 0 || lastaddr < 688 (phdr[i].p_vaddr + off + phdr[i].p_memsz)) 689 lastaddr = phdr[i].p_vaddr + off + phdr[i].p_memsz; 690 } 691 lastaddr = roundup(lastaddr, sizeof(long)); 692 693 /* 694 * Get the section headers. We need this for finding the .ctors 695 * section as well as for loading any symbols. Both may be hard 696 * to do if reading from a .gz file as it involves seeking. I 697 * think the rule is going to have to be that you must strip a 698 * file to remove symbols before gzipping it. 699 */ 700 chunk = (size_t)ehdr->e_shnum * (size_t)ehdr->e_shentsize; 701 if (chunk == 0 || ehdr->e_shoff == 0) 702 goto nosyms; 703 shdr = alloc_pread(VECTX_HANDLE(ef), ehdr->e_shoff, chunk); 704 if (shdr == NULL) { 705 printf("\nelf" __XSTRING(__ELF_WORD_SIZE) 706 "_loadimage: failed to read section headers"); 707 goto nosyms; 708 } 709 710 for (i = 0; i < ehdr->e_shnum; i++) 711 elf_section_header_convert(ehdr, &shdr[i]); 712 713 file_addmetadata(fp, MODINFOMD_SHDR, chunk, shdr); 714 715 /* 716 * Read the section string table and look for the .ctors section. 717 * We need to tell the kernel where it is so that it can call the 718 * ctors. 719 */ 720 chunk = shdr[ehdr->e_shstrndx].sh_size; 721 if (chunk) { 722 shstr = alloc_pread(VECTX_HANDLE(ef), 723 shdr[ehdr->e_shstrndx].sh_offset, chunk); 724 if (shstr) { 725 for (i = 0; i < ehdr->e_shnum; i++) { 726 if (strcmp(shstr + shdr[i].sh_name, 727 ".ctors") != 0) 728 continue; 729 ctors = shdr[i].sh_addr; 730 file_addmetadata(fp, MODINFOMD_CTORS_ADDR, 731 sizeof(ctors), &ctors); 732 size = shdr[i].sh_size; 733 file_addmetadata(fp, MODINFOMD_CTORS_SIZE, 734 sizeof(size), &size); 735 break; 736 } 737 free(shstr); 738 } 739 } 740 741 /* 742 * Now load any symbols. 743 */ 744 symtabindex = -1; 745 symstrindex = -1; 746 for (i = 0; i < ehdr->e_shnum; i++) { 747 if (shdr[i].sh_type != SHT_SYMTAB) 748 continue; 749 for (j = 0; j < ehdr->e_phnum; j++) { 750 if (phdr[j].p_type != PT_LOAD) 751 continue; 752 if (shdr[i].sh_offset >= phdr[j].p_offset && 753 (shdr[i].sh_offset + shdr[i].sh_size <= 754 phdr[j].p_offset + phdr[j].p_filesz)) { 755 shdr[i].sh_offset = 0; 756 shdr[i].sh_size = 0; 757 break; 758 } 759 } 760 if (shdr[i].sh_offset == 0 || shdr[i].sh_size == 0) 761 continue; /* alread loaded in a PT_LOAD above */ 762 /* Save it for loading below */ 763 symtabindex = i; 764 symstrindex = shdr[i].sh_link; 765 } 766 if (symtabindex < 0 || symstrindex < 0) 767 goto nosyms; 768 769 /* Ok, committed to a load. */ 770 #ifndef ELF_VERBOSE 771 printf("syms=["); 772 #endif 773 ssym = lastaddr; 774 for (i = symtabindex; i >= 0; i = symstrindex) { 775 #ifdef ELF_VERBOSE 776 char *secname; 777 778 switch(shdr[i].sh_type) { 779 case SHT_SYMTAB: /* Symbol table */ 780 secname = "symtab"; 781 break; 782 case SHT_STRTAB: /* String table */ 783 secname = "strtab"; 784 break; 785 default: 786 secname = "WHOA!!"; 787 break; 788 } 789 #endif 790 size = shdr[i].sh_size; 791 792 archsw.arch_copyin(&size, lastaddr, sizeof(size)); 793 lastaddr += sizeof(size); 794 795 #ifdef ELF_VERBOSE 796 printf("\n%s: 0x%jx@0x%jx -> 0x%jx-0x%jx", secname, 797 (uintmax_t)shdr[i].sh_size, (uintmax_t)shdr[i].sh_offset, 798 (uintmax_t)lastaddr, 799 (uintmax_t)(lastaddr + shdr[i].sh_size)); 800 #else 801 if (i == symstrindex) 802 printf("+"); 803 printf("0x%lx+0x%lx", (long)sizeof(size), (long)size); 804 #endif 805 806 if (VECTX_LSEEK(VECTX_HANDLE(ef), (off_t)shdr[i].sh_offset, SEEK_SET) == -1) { 807 printf("\nelf" __XSTRING(__ELF_WORD_SIZE) 808 "_loadimage: could not seek for symbols - skipped!"); 809 lastaddr = ssym; 810 ssym = 0; 811 goto nosyms; 812 } 813 result = archsw.arch_readin(VECTX_HANDLE(ef), lastaddr, shdr[i].sh_size); 814 if (result < 0 || (size_t)result != shdr[i].sh_size) { 815 printf("\nelf" __XSTRING(__ELF_WORD_SIZE) 816 "_loadimage: could not read symbols - skipped! " 817 "(%ju != %ju)", (uintmax_t)result, 818 (uintmax_t)shdr[i].sh_size); 819 lastaddr = ssym; 820 ssym = 0; 821 goto nosyms; 822 } 823 /* Reset offsets relative to ssym */ 824 lastaddr += shdr[i].sh_size; 825 lastaddr = roundup(lastaddr, sizeof(size)); 826 if (i == symtabindex) 827 symtabindex = -1; 828 else if (i == symstrindex) 829 symstrindex = -1; 830 } 831 esym = lastaddr; 832 #ifndef ELF_VERBOSE 833 printf("]"); 834 #endif 835 836 file_addmetadata(fp, MODINFOMD_SSYM, sizeof(ssym), &ssym); 837 file_addmetadata(fp, MODINFOMD_ESYM, sizeof(esym), &esym); 838 839 nosyms: 840 printf("\n"); 841 842 ret = lastaddr - firstaddr; 843 fp->f_addr = firstaddr; 844 845 php = NULL; 846 for (i = 0; i < ehdr->e_phnum; i++) { 847 if (phdr[i].p_type == PT_DYNAMIC) { 848 php = phdr + i; 849 adp = php->p_vaddr; 850 file_addmetadata(fp, MODINFOMD_DYNAMIC, sizeof(adp), 851 &adp); 852 break; 853 } 854 } 855 856 if (php == NULL) /* this is bad, we cannot get to symbols or _DYNAMIC */ 857 goto out; 858 859 ndp = php->p_filesz / sizeof(Elf_Dyn); 860 if (ndp == 0) 861 goto out; 862 dp = malloc(php->p_filesz); 863 if (dp == NULL) 864 goto out; 865 archsw.arch_copyout(php->p_vaddr + off, dp, php->p_filesz); 866 867 ef->strsz = 0; 868 for (i = 0; i < ndp; i++) { 869 if (dp[i].d_tag == 0) 870 break; 871 switch (dp[i].d_tag) { 872 case DT_HASH: 873 ef->hashtab = 874 (Elf_Hashelt*)(uintptr_t)(dp[i].d_un.d_ptr + off); 875 break; 876 case DT_STRTAB: 877 ef->strtab = 878 (char *)(uintptr_t)(dp[i].d_un.d_ptr + off); 879 break; 880 case DT_STRSZ: 881 ef->strsz = dp[i].d_un.d_val; 882 break; 883 case DT_SYMTAB: 884 ef->symtab = 885 (Elf_Sym *)(uintptr_t)(dp[i].d_un.d_ptr + off); 886 break; 887 case DT_REL: 888 ef->rel = 889 (Elf_Rel *)(uintptr_t)(dp[i].d_un.d_ptr + off); 890 break; 891 case DT_RELSZ: 892 ef->relsz = dp[i].d_un.d_val; 893 break; 894 case DT_RELA: 895 ef->rela = 896 (Elf_Rela *)(uintptr_t)(dp[i].d_un.d_ptr + off); 897 break; 898 case DT_RELASZ: 899 ef->relasz = dp[i].d_un.d_val; 900 break; 901 default: 902 break; 903 } 904 } 905 if (ef->hashtab == NULL || ef->symtab == NULL || 906 ef->strtab == NULL || ef->strsz == 0) 907 goto out; 908 COPYOUT(ef->hashtab, &ef->nbuckets, sizeof(ef->nbuckets)); 909 COPYOUT(ef->hashtab + 1, &ef->nchains, sizeof(ef->nchains)); 910 ef->buckets = ef->hashtab + 2; 911 ef->chains = ef->buckets + ef->nbuckets; 912 913 if (__elfN(lookup_symbol)(ef, "__start_set_modmetadata_set", &sym, 914 STT_NOTYPE) != 0) 915 return 0; 916 p_start = sym.st_value + ef->off; 917 if (__elfN(lookup_symbol)(ef, "__stop_set_modmetadata_set", &sym, 918 STT_NOTYPE) != 0) 919 return 0; 920 p_end = sym.st_value + ef->off; 921 922 if (__elfN(parse_modmetadata)(fp, ef, p_start, p_end) == 0) 923 goto out; 924 925 if (ef->kernel) /* kernel must not depend on anything */ 926 goto out; 927 928 out: 929 if (dp) 930 free(dp); 931 if (shdr) 932 free(shdr); 933 return ret; 934 } 935 936 static char invalid_name[] = "bad"; 937 938 char * 939 fake_modname(const char *name) 940 { 941 const char *sp, *ep; 942 char *fp; 943 size_t len; 944 945 sp = strrchr(name, '/'); 946 if (sp) 947 sp++; 948 else 949 sp = name; 950 951 ep = strrchr(sp, '.'); 952 if (ep == NULL) { 953 ep = sp + strlen(sp); 954 } 955 if (ep == sp) { 956 sp = invalid_name; 957 ep = invalid_name + sizeof(invalid_name) - 1; 958 } 959 960 len = ep - sp; 961 fp = malloc(len + 1); 962 if (fp == NULL) 963 return NULL; 964 memcpy(fp, sp, len); 965 fp[len] = '\0'; 966 return fp; 967 } 968 969 #if (defined(__i386__) || defined(__powerpc__)) && __ELF_WORD_SIZE == 64 970 struct mod_metadata64 { 971 int md_version; /* structure version MDTV_* */ 972 int md_type; /* type of entry MDT_* */ 973 uint64_t md_data; /* specific data */ 974 uint64_t md_cval; /* common string label */ 975 }; 976 #endif 977 #if defined(__amd64__) && __ELF_WORD_SIZE == 32 978 struct mod_metadata32 { 979 int md_version; /* structure version MDTV_* */ 980 int md_type; /* type of entry MDT_* */ 981 uint32_t md_data; /* specific data */ 982 uint32_t md_cval; /* common string label */ 983 }; 984 #endif 985 986 int 987 __elfN(load_modmetadata)(struct preloaded_file *fp, uint64_t dest) 988 { 989 struct elf_file ef; 990 int err, i, j; 991 Elf_Shdr *sh_meta, *shdr = NULL; 992 Elf_Shdr *sh_data[2]; 993 char *shstrtab = NULL; 994 size_t size; 995 Elf_Addr p_start, p_end; 996 997 bzero(&ef, sizeof(struct elf_file)); 998 ef.fd = -1; 999 1000 err = __elfN(load_elf_header)(fp->f_name, &ef); 1001 if (err != 0) 1002 goto out; 1003 1004 if (ef.kernel == 1 || ef.ehdr->e_type == ET_EXEC) { 1005 ef.kernel = 1; 1006 } else if (ef.ehdr->e_type != ET_DYN) { 1007 err = EFTYPE; 1008 goto out; 1009 } 1010 1011 size = (size_t)ef.ehdr->e_shnum * (size_t)ef.ehdr->e_shentsize; 1012 shdr = alloc_pread(VECTX_HANDLE(&ef), ef.ehdr->e_shoff, size); 1013 if (shdr == NULL) { 1014 err = ENOMEM; 1015 goto out; 1016 } 1017 1018 /* Load shstrtab. */ 1019 shstrtab = alloc_pread(VECTX_HANDLE(&ef), shdr[ef.ehdr->e_shstrndx].sh_offset, 1020 shdr[ef.ehdr->e_shstrndx].sh_size); 1021 if (shstrtab == NULL) { 1022 printf("\nelf" __XSTRING(__ELF_WORD_SIZE) 1023 "load_modmetadata: unable to load shstrtab\n"); 1024 err = EFTYPE; 1025 goto out; 1026 } 1027 1028 /* Find set_modmetadata_set and data sections. */ 1029 sh_data[0] = sh_data[1] = sh_meta = NULL; 1030 for (i = 0, j = 0; i < ef.ehdr->e_shnum; i++) { 1031 if (strcmp(&shstrtab[shdr[i].sh_name], 1032 "set_modmetadata_set") == 0) { 1033 sh_meta = &shdr[i]; 1034 } 1035 if ((strcmp(&shstrtab[shdr[i].sh_name], ".data") == 0) || 1036 (strcmp(&shstrtab[shdr[i].sh_name], ".rodata") == 0)) { 1037 sh_data[j++] = &shdr[i]; 1038 } 1039 } 1040 if (sh_meta == NULL || sh_data[0] == NULL || sh_data[1] == NULL) { 1041 printf("\nelf" __XSTRING(__ELF_WORD_SIZE) 1042 "load_modmetadata: unable to find set_modmetadata_set or data sections\n"); 1043 err = EFTYPE; 1044 goto out; 1045 } 1046 1047 /* Load set_modmetadata_set into memory */ 1048 err = kern_pread(VECTX_HANDLE(&ef), dest, sh_meta->sh_size, sh_meta->sh_offset); 1049 if (err != 0) { 1050 printf("\nelf" __XSTRING(__ELF_WORD_SIZE) 1051 "load_modmetadata: unable to load set_modmetadata_set: %d\n", err); 1052 goto out; 1053 } 1054 p_start = dest; 1055 p_end = dest + sh_meta->sh_size; 1056 dest += sh_meta->sh_size; 1057 1058 /* Load data sections into memory. */ 1059 err = kern_pread(VECTX_HANDLE(&ef), dest, sh_data[0]->sh_size, 1060 sh_data[0]->sh_offset); 1061 if (err != 0) { 1062 printf("\nelf" __XSTRING(__ELF_WORD_SIZE) 1063 "load_modmetadata: unable to load data: %d\n", err); 1064 goto out; 1065 } 1066 1067 /* 1068 * We have to increment the dest, so that the offset is the same into 1069 * both the .rodata and .data sections. 1070 */ 1071 ef.off = -(sh_data[0]->sh_addr - dest); 1072 dest += (sh_data[1]->sh_addr - sh_data[0]->sh_addr); 1073 1074 err = kern_pread(VECTX_HANDLE(&ef), dest, sh_data[1]->sh_size, 1075 sh_data[1]->sh_offset); 1076 if (err != 0) { 1077 printf("\nelf" __XSTRING(__ELF_WORD_SIZE) 1078 "load_modmetadata: unable to load data: %d\n", err); 1079 goto out; 1080 } 1081 1082 err = __elfN(parse_modmetadata)(fp, &ef, p_start, p_end); 1083 if (err != 0) { 1084 printf("\nelf" __XSTRING(__ELF_WORD_SIZE) 1085 "load_modmetadata: unable to parse metadata: %d\n", err); 1086 goto out; 1087 } 1088 1089 out: 1090 if (shstrtab != NULL) 1091 free(shstrtab); 1092 if (shdr != NULL) 1093 free(shdr); 1094 if (ef.firstpage != NULL) 1095 free(ef.firstpage); 1096 if (ef.fd != -1) { 1097 #ifdef LOADER_VERIEXEC_VECTX 1098 if (!err && ef.vctx) { 1099 int verror; 1100 1101 verror = vectx_close(ef.vctx, VE_MUST, __func__); 1102 if (verror) { 1103 err = EAUTH; 1104 file_discard(fp); 1105 } 1106 } 1107 #endif 1108 close(ef.fd); 1109 } 1110 return (err); 1111 } 1112 1113 int 1114 __elfN(parse_modmetadata)(struct preloaded_file *fp, elf_file_t ef, 1115 Elf_Addr p_start, Elf_Addr p_end) 1116 { 1117 struct mod_metadata md; 1118 #if (defined(__i386__) || defined(__powerpc__)) && __ELF_WORD_SIZE == 64 1119 struct mod_metadata64 md64; 1120 #elif defined(__amd64__) && __ELF_WORD_SIZE == 32 1121 struct mod_metadata32 md32; 1122 #endif 1123 struct mod_depend *mdepend; 1124 struct mod_version mver; 1125 char *s; 1126 int error, modcnt, minfolen; 1127 Elf_Addr v, p; 1128 1129 modcnt = 0; 1130 p = p_start; 1131 while (p < p_end) { 1132 COPYOUT(p, &v, sizeof(v)); 1133 error = __elfN(reloc_ptr)(fp, ef, p, &v, sizeof(v)); 1134 if (error == EOPNOTSUPP) 1135 v += ef->off; 1136 else if (error != 0) 1137 return (error); 1138 #if (defined(__i386__) || defined(__powerpc__)) && __ELF_WORD_SIZE == 64 1139 COPYOUT(v, &md64, sizeof(md64)); 1140 error = __elfN(reloc_ptr)(fp, ef, v, &md64, sizeof(md64)); 1141 if (error == EOPNOTSUPP) { 1142 md64.md_cval += ef->off; 1143 md64.md_data += ef->off; 1144 } else if (error != 0) 1145 return (error); 1146 md.md_version = md64.md_version; 1147 md.md_type = md64.md_type; 1148 md.md_cval = (const char *)(uintptr_t)md64.md_cval; 1149 md.md_data = (void *)(uintptr_t)md64.md_data; 1150 #elif defined(__amd64__) && __ELF_WORD_SIZE == 32 1151 COPYOUT(v, &md32, sizeof(md32)); 1152 error = __elfN(reloc_ptr)(fp, ef, v, &md32, sizeof(md32)); 1153 if (error == EOPNOTSUPP) { 1154 md32.md_cval += ef->off; 1155 md32.md_data += ef->off; 1156 } else if (error != 0) 1157 return (error); 1158 md.md_version = md32.md_version; 1159 md.md_type = md32.md_type; 1160 md.md_cval = (const char *)(uintptr_t)md32.md_cval; 1161 md.md_data = (void *)(uintptr_t)md32.md_data; 1162 #else 1163 COPYOUT(v, &md, sizeof(md)); 1164 error = __elfN(reloc_ptr)(fp, ef, v, &md, sizeof(md)); 1165 if (error == EOPNOTSUPP) { 1166 md.md_cval += ef->off; 1167 md.md_data = (void *)((uintptr_t)md.md_data + 1168 (uintptr_t)ef->off); 1169 } else if (error != 0) 1170 return (error); 1171 #endif 1172 p += sizeof(Elf_Addr); 1173 switch(md.md_type) { 1174 case MDT_DEPEND: 1175 if (ef->kernel) /* kernel must not depend on anything */ 1176 break; 1177 s = strdupout((vm_offset_t)md.md_cval); 1178 minfolen = sizeof(*mdepend) + strlen(s) + 1; 1179 mdepend = malloc(minfolen); 1180 if (mdepend == NULL) 1181 return ENOMEM; 1182 COPYOUT((vm_offset_t)md.md_data, mdepend, 1183 sizeof(*mdepend)); 1184 strcpy((char*)(mdepend + 1), s); 1185 free(s); 1186 file_addmetadata(fp, MODINFOMD_DEPLIST, minfolen, 1187 mdepend); 1188 free(mdepend); 1189 break; 1190 case MDT_VERSION: 1191 s = strdupout((vm_offset_t)md.md_cval); 1192 COPYOUT((vm_offset_t)md.md_data, &mver, sizeof(mver)); 1193 file_addmodule(fp, s, mver.mv_version, NULL); 1194 free(s); 1195 modcnt++; 1196 break; 1197 } 1198 } 1199 if (modcnt == 0) { 1200 s = fake_modname(fp->f_name); 1201 file_addmodule(fp, s, 1, NULL); 1202 free(s); 1203 } 1204 return 0; 1205 } 1206 1207 static unsigned long 1208 elf_hash(const char *name) 1209 { 1210 const unsigned char *p = (const unsigned char *) name; 1211 unsigned long h = 0; 1212 unsigned long g; 1213 1214 while (*p != '\0') { 1215 h = (h << 4) + *p++; 1216 if ((g = h & 0xf0000000) != 0) 1217 h ^= g >> 24; 1218 h &= ~g; 1219 } 1220 return h; 1221 } 1222 1223 static const char __elfN(bad_symtable)[] = "elf" __XSTRING(__ELF_WORD_SIZE) 1224 "_lookup_symbol: corrupt symbol table\n"; 1225 int 1226 __elfN(lookup_symbol)(elf_file_t ef, const char* name, Elf_Sym *symp, 1227 unsigned char type) 1228 { 1229 Elf_Hashelt symnum; 1230 Elf_Sym sym; 1231 char *strp; 1232 unsigned long hash; 1233 1234 if (ef->nbuckets == 0) { 1235 printf(__elfN(bad_symtable)); 1236 return ENOENT; 1237 } 1238 1239 hash = elf_hash(name); 1240 COPYOUT(&ef->buckets[hash % ef->nbuckets], &symnum, sizeof(symnum)); 1241 1242 while (symnum != STN_UNDEF) { 1243 if (symnum >= ef->nchains) { 1244 printf(__elfN(bad_symtable)); 1245 return ENOENT; 1246 } 1247 1248 COPYOUT(ef->symtab + symnum, &sym, sizeof(sym)); 1249 if (sym.st_name == 0) { 1250 printf(__elfN(bad_symtable)); 1251 return ENOENT; 1252 } 1253 1254 strp = strdupout((vm_offset_t)(ef->strtab + sym.st_name)); 1255 if (strcmp(name, strp) == 0) { 1256 free(strp); 1257 if (sym.st_shndx != SHN_UNDEF || 1258 (sym.st_value != 0 && 1259 ELF_ST_TYPE(sym.st_info) == type)) { 1260 *symp = sym; 1261 return 0; 1262 } 1263 return ENOENT; 1264 } 1265 free(strp); 1266 COPYOUT(&ef->chains[symnum], &symnum, sizeof(symnum)); 1267 } 1268 return ENOENT; 1269 } 1270 1271 /* 1272 * Apply any intra-module relocations to the value. p is the load address 1273 * of the value and val/len is the value to be modified. This does NOT modify 1274 * the image in-place, because this is done by kern_linker later on. 1275 * 1276 * Returns EOPNOTSUPP if no relocation method is supplied. 1277 */ 1278 static int 1279 __elfN(reloc_ptr)(struct preloaded_file *mp, elf_file_t ef, 1280 Elf_Addr p, void *val, size_t len) 1281 { 1282 size_t n; 1283 Elf_Rela a; 1284 Elf_Rel r; 1285 int error; 1286 1287 /* 1288 * The kernel is already relocated, but we still want to apply 1289 * offset adjustments. 1290 */ 1291 if (ef->kernel) 1292 return (EOPNOTSUPP); 1293 1294 for (n = 0; n < ef->relsz / sizeof(r); n++) { 1295 COPYOUT(ef->rel + n, &r, sizeof(r)); 1296 1297 error = __elfN(reloc)(ef, __elfN(symaddr), &r, ELF_RELOC_REL, 1298 ef->off, p, val, len); 1299 if (error != 0) 1300 return (error); 1301 } 1302 for (n = 0; n < ef->relasz / sizeof(a); n++) { 1303 COPYOUT(ef->rela + n, &a, sizeof(a)); 1304 1305 error = __elfN(reloc)(ef, __elfN(symaddr), &a, ELF_RELOC_RELA, 1306 ef->off, p, val, len); 1307 if (error != 0) 1308 return (error); 1309 } 1310 1311 return (0); 1312 } 1313 1314 static Elf_Addr 1315 __elfN(symaddr)(struct elf_file *ef, Elf_Size symidx) 1316 { 1317 1318 /* Symbol lookup by index not required here. */ 1319 return (0); 1320 } 1321