1 /* $OpenBSD: exec_elf.c,v 1.82 2011/05/24 15:27:36 ariane Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Per Fogelstrom 5 * All rights reserved. 6 * 7 * Copyright (c) 1994 Christos Zoulas 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 /* 35 * Copyright (c) 2001 Wasabi Systems, Inc. 36 * All rights reserved. 37 * 38 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. All advertising materials mentioning features or use of this software 49 * must display the following acknowledgement: 50 * This product includes software developed for the NetBSD Project by 51 * Wasabi Systems, Inc. 52 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 53 * or promote products derived from this software without specific prior 54 * written permission. 55 * 56 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 57 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 58 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 59 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 60 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 61 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 62 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 63 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 64 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 65 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 66 * POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/kernel.h> 72 #include <sys/proc.h> 73 #include <sys/malloc.h> 74 #include <sys/pool.h> 75 #include <sys/mount.h> 76 #include <sys/namei.h> 77 #include <sys/vnode.h> 78 #include <sys/core.h> 79 #include <sys/exec.h> 80 #include <sys/exec_elf.h> 81 #include <sys/exec_olf.h> 82 #include <sys/file.h> 83 #include <sys/ptrace.h> 84 #include <sys/syscall.h> 85 #include <sys/signalvar.h> 86 #include <sys/stat.h> 87 88 #include <sys/mman.h> 89 #include <uvm/uvm_extern.h> 90 91 #include <machine/cpu.h> 92 #include <machine/reg.h> 93 #include <machine/exec.h> 94 95 #ifdef COMPAT_LINUX 96 #include <compat/linux/linux_exec.h> 97 #endif 98 99 #ifdef COMPAT_SVR4 100 #include <compat/svr4/svr4_exec.h> 101 #endif 102 103 struct ELFNAME(probe_entry) { 104 int (*func)(struct proc *, struct exec_package *, char *, 105 u_long *, u_int8_t *); 106 } ELFNAME(probes)[] = { 107 /* XXX - bogus, shouldn't be size independent.. */ 108 #ifdef COMPAT_LINUX 109 { linux_elf_probe }, 110 #endif 111 #ifdef COMPAT_SVR4 112 { svr4_elf_probe }, 113 #endif 114 { NULL } 115 }; 116 117 int ELFNAME(load_file)(struct proc *, char *, struct exec_package *, 118 struct elf_args *, Elf_Addr *); 119 int ELFNAME(check_header)(Elf_Ehdr *); 120 int ELFNAME(read_from)(struct proc *, struct vnode *, u_long, caddr_t, int); 121 void ELFNAME(load_psection)(struct exec_vmcmd_set *, struct vnode *, 122 Elf_Phdr *, Elf_Addr *, Elf_Addr *, int *, int); 123 int ELFNAMEEND(coredump)(struct proc *, void *); 124 125 extern char sigcode[], esigcode[]; 126 #ifdef SYSCALL_DEBUG 127 extern char *syscallnames[]; 128 #endif 129 130 /* round up and down to page boundaries. */ 131 #define ELF_ROUND(a, b) (((a) + (b) - 1) & ~((b) - 1)) 132 #define ELF_TRUNC(a, b) ((a) & ~((b) - 1)) 133 134 /* 135 * We limit the number of program headers to 32, this should 136 * be a reasonable limit for ELF, the most we have seen so far is 12 137 */ 138 #define ELF_MAX_VALID_PHDR 32 139 140 /* 141 * This is the basic elf emul. elf_probe_funcs may change to other emuls. 142 */ 143 struct emul ELFNAMEEND(emul) = { 144 "native", 145 NULL, 146 sendsig, 147 SYS_syscall, 148 SYS_MAXSYSCALL, 149 sysent, 150 #ifdef SYSCALL_DEBUG 151 syscallnames, 152 #else 153 NULL, 154 #endif 155 (sizeof(AuxInfo) * ELF_AUX_ENTRIES / sizeof(char *)), 156 ELFNAME(copyargs), 157 setregs, 158 ELFNAME2(exec,fixup), 159 ELFNAMEEND(coredump), 160 sigcode, 161 esigcode, 162 EMUL_ENABLED | EMUL_NATIVE, 163 }; 164 165 /* 166 * Copy arguments onto the stack in the normal way, but add some 167 * space for extra information in case of dynamic binding. 168 */ 169 void * 170 ELFNAME(copyargs)(struct exec_package *pack, struct ps_strings *arginfo, 171 void *stack, void *argp) 172 { 173 stack = copyargs(pack, arginfo, stack, argp); 174 if (!stack) 175 return (NULL); 176 177 /* 178 * Push space for extra arguments on the stack needed by 179 * dynamically linked binaries. 180 */ 181 if (pack->ep_interp != NULL) { 182 pack->ep_emul_argp = stack; 183 stack = (char *)stack + ELF_AUX_ENTRIES * sizeof (AuxInfo); 184 } 185 return (stack); 186 } 187 188 /* 189 * Check header for validity; return 0 for ok, ENOEXEC if error 190 */ 191 int 192 ELFNAME(check_header)(Elf_Ehdr *ehdr) 193 { 194 /* 195 * We need to check magic, class size, endianess, and version before 196 * we look at the rest of the Elf_Ehdr structure. These few elements 197 * are represented in a machine independent fashion. 198 */ 199 if (!IS_ELF(*ehdr) || 200 ehdr->e_ident[EI_CLASS] != ELF_TARG_CLASS || 201 ehdr->e_ident[EI_DATA] != ELF_TARG_DATA || 202 ehdr->e_ident[EI_VERSION] != ELF_TARG_VER) 203 return (ENOEXEC); 204 205 /* Now check the machine dependent header */ 206 if (ehdr->e_machine != ELF_TARG_MACH || 207 ehdr->e_version != ELF_TARG_VER) 208 return (ENOEXEC); 209 210 /* Don't allow an insane amount of sections. */ 211 if (ehdr->e_phnum > ELF_MAX_VALID_PHDR) 212 return (ENOEXEC); 213 214 return (0); 215 } 216 217 /* 218 * Load a psection at the appropriate address 219 */ 220 void 221 ELFNAME(load_psection)(struct exec_vmcmd_set *vcset, struct vnode *vp, 222 Elf_Phdr *ph, Elf_Addr *addr, Elf_Addr *size, int *prot, int flags) 223 { 224 u_long uaddr, msize, lsize, psize, rm, rf; 225 long diff, offset, bdiff; 226 Elf_Addr base; 227 228 /* 229 * If the user specified an address, then we load there. 230 */ 231 if (*addr != ELFDEFNNAME(NO_ADDR)) { 232 if (ph->p_align > 1) { 233 *addr = ELF_TRUNC(*addr, ph->p_align); 234 diff = ph->p_vaddr - ELF_TRUNC(ph->p_vaddr, ph->p_align); 235 /* page align vaddr */ 236 base = *addr + trunc_page(ph->p_vaddr) 237 - ELF_TRUNC(ph->p_vaddr, ph->p_align); 238 239 bdiff = ph->p_vaddr - trunc_page(ph->p_vaddr); 240 241 } else 242 diff = 0; 243 } else { 244 *addr = uaddr = ph->p_vaddr; 245 if (ph->p_align > 1) 246 *addr = ELF_TRUNC(uaddr, ph->p_align); 247 base = trunc_page(uaddr); 248 bdiff = uaddr - base; 249 diff = uaddr - *addr; 250 } 251 252 *prot |= (ph->p_flags & PF_R) ? VM_PROT_READ : 0; 253 *prot |= (ph->p_flags & PF_W) ? VM_PROT_WRITE : 0; 254 *prot |= (ph->p_flags & PF_X) ? VM_PROT_EXECUTE : 0; 255 256 msize = ph->p_memsz + diff; 257 offset = ph->p_offset - bdiff; 258 lsize = ph->p_filesz + bdiff; 259 psize = round_page(lsize); 260 261 /* 262 * Because the pagedvn pager can't handle zero fill of the last 263 * data page if it's not page aligned we map the last page readvn. 264 */ 265 if (ph->p_flags & PF_W) { 266 psize = trunc_page(lsize); 267 if (psize > 0) 268 NEW_VMCMD2(vcset, vmcmd_map_pagedvn, psize, base, vp, 269 offset, *prot, flags); 270 if (psize != lsize) { 271 NEW_VMCMD2(vcset, vmcmd_map_readvn, lsize - psize, 272 base + psize, vp, offset + psize, *prot, flags); 273 } 274 } else { 275 NEW_VMCMD2(vcset, vmcmd_map_pagedvn, psize, base, vp, offset, 276 *prot, flags); 277 } 278 279 /* 280 * Check if we need to extend the size of the segment 281 */ 282 rm = round_page(*addr + ph->p_memsz + diff); 283 rf = round_page(*addr + ph->p_filesz + diff); 284 285 if (rm != rf) { 286 NEW_VMCMD2(vcset, vmcmd_map_zero, rm - rf, rf, NULLVP, 0, 287 *prot, flags); 288 } 289 *size = msize; 290 } 291 292 /* 293 * Read from vnode into buffer at offset. 294 */ 295 int 296 ELFNAME(read_from)(struct proc *p, struct vnode *vp, u_long off, caddr_t buf, 297 int size) 298 { 299 int error; 300 size_t resid; 301 302 if ((error = vn_rdwr(UIO_READ, vp, buf, size, off, UIO_SYSSPACE, 303 0, p->p_ucred, &resid, p)) != 0) 304 return error; 305 /* 306 * See if we got all of it 307 */ 308 if (resid != 0) 309 return (ENOEXEC); 310 return (0); 311 } 312 313 /* 314 * Load a file (interpreter/library) pointed to by path [stolen from 315 * coff_load_shlib()]. Made slightly generic so it might be used externally. 316 */ 317 int 318 ELFNAME(load_file)(struct proc *p, char *path, struct exec_package *epp, 319 struct elf_args *ap, Elf_Addr *last) 320 { 321 int error, i; 322 struct nameidata nd; 323 Elf_Ehdr eh; 324 Elf_Phdr *ph = NULL; 325 u_long phsize; 326 Elf_Addr addr; 327 struct vnode *vp; 328 Elf_Phdr *base_ph = NULL; 329 struct interp_ld_sec { 330 Elf_Addr vaddr; 331 u_long memsz; 332 } loadmap[ELF_MAX_VALID_PHDR]; 333 int nload, idx = 0; 334 Elf_Addr pos = *last; 335 int file_align; 336 int loop; 337 338 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, path, p); 339 if ((error = namei(&nd)) != 0) { 340 return (error); 341 } 342 vp = nd.ni_vp; 343 if (vp->v_type != VREG) { 344 error = EACCES; 345 goto bad; 346 } 347 if ((error = VOP_GETATTR(vp, epp->ep_vap, p->p_ucred, p)) != 0) 348 goto bad; 349 if (vp->v_mount->mnt_flag & MNT_NOEXEC) { 350 error = EACCES; 351 goto bad; 352 } 353 if ((error = VOP_ACCESS(vp, VREAD, p->p_ucred, p)) != 0) 354 goto bad1; 355 if ((error = ELFNAME(read_from)(p, nd.ni_vp, 0, 356 (caddr_t)&eh, sizeof(eh))) != 0) 357 goto bad1; 358 359 if (ELFNAME(check_header)(&eh) || eh.e_type != ET_DYN) { 360 error = ENOEXEC; 361 goto bad1; 362 } 363 364 phsize = eh.e_phnum * sizeof(Elf_Phdr); 365 ph = malloc(phsize, M_TEMP, M_WAITOK); 366 367 if ((error = ELFNAME(read_from)(p, nd.ni_vp, eh.e_phoff, (caddr_t)ph, 368 phsize)) != 0) 369 goto bad1; 370 371 for (i = 0; i < eh.e_phnum; i++) { 372 if (ph[i].p_type == PT_LOAD) { 373 loadmap[idx].vaddr = trunc_page(ph[i].p_vaddr); 374 loadmap[idx].memsz = round_page (ph[i].p_vaddr + 375 ph[i].p_memsz - loadmap[idx].vaddr); 376 file_align = ph[i].p_align; 377 idx++; 378 } 379 } 380 nload = idx; 381 382 /* 383 * If no position to load the interpreter was set by a probe 384 * function, pick the same address that a non-fixed mmap(0, ..) 385 * would (i.e. something safely out of the way). 386 */ 387 if (pos == ELFDEFNNAME(NO_ADDR)) { 388 pos = uvm_map_hint(p, VM_PROT_EXECUTE); 389 } 390 391 pos = ELF_ROUND(pos, file_align); 392 *last = epp->ep_interp_pos = pos; 393 loop = 0; 394 for (i = 0; i < nload;/**/) { 395 vaddr_t addr; 396 struct uvm_object *uobj; 397 off_t uoff; 398 size_t size; 399 400 #ifdef this_needs_fixing 401 if (i == 0) { 402 uobj = &vp->v_uvm.u_obj; 403 /* need to fix uoff */ 404 } else { 405 #endif 406 uobj = NULL; 407 uoff = 0; 408 #ifdef this_needs_fixing 409 } 410 #endif 411 412 addr = trunc_page(pos + loadmap[i].vaddr); 413 size = round_page(addr + loadmap[i].memsz) - addr; 414 415 /* CRAP - map_findspace does not avoid daddr+BRKSIZ */ 416 if ((addr + size > (vaddr_t)p->p_vmspace->vm_daddr) && 417 (addr < (vaddr_t)p->p_vmspace->vm_daddr + BRKSIZ)) 418 addr = round_page((vaddr_t)p->p_vmspace->vm_daddr + 419 BRKSIZ); 420 421 if (uvm_map_mquery(&p->p_vmspace->vm_map, &addr, size, 422 (i == 0 ? uoff : UVM_UNKNOWN_OFFSET), 0) != 0) { 423 if (loop == 0) { 424 loop = 1; 425 i = 0; 426 *last = epp->ep_interp_pos = pos = 0; 427 continue; 428 } 429 error = ENOMEM; 430 goto bad1; 431 } 432 if (addr != pos + loadmap[i].vaddr) { 433 /* base changed. */ 434 pos = addr - trunc_page(loadmap[i].vaddr); 435 pos = ELF_ROUND(pos,file_align); 436 epp->ep_interp_pos = *last = pos; 437 i = 0; 438 continue; 439 } 440 441 i++; 442 } 443 444 /* 445 * Load all the necessary sections 446 */ 447 for (i = 0; i < eh.e_phnum; i++) { 448 Elf_Addr size = 0; 449 int prot = 0; 450 int flags; 451 452 switch (ph[i].p_type) { 453 case PT_LOAD: 454 if (base_ph == NULL) { 455 flags = VMCMD_BASE; 456 addr = *last; 457 base_ph = &ph[i]; 458 } else { 459 flags = VMCMD_RELATIVE; 460 addr = ph[i].p_vaddr - base_ph->p_vaddr; 461 } 462 ELFNAME(load_psection)(&epp->ep_vmcmds, nd.ni_vp, 463 &ph[i], &addr, &size, &prot, flags); 464 /* If entry is within this section it must be text */ 465 if (eh.e_entry >= ph[i].p_vaddr && 466 eh.e_entry < (ph[i].p_vaddr + size)) { 467 epp->ep_entry = addr + eh.e_entry - 468 ELF_TRUNC(ph[i].p_vaddr,ph[i].p_align); 469 ap->arg_interp = addr; 470 } 471 addr += size; 472 break; 473 474 case PT_DYNAMIC: 475 case PT_PHDR: 476 case PT_NOTE: 477 break; 478 479 default: 480 break; 481 } 482 } 483 484 vn_marktext(nd.ni_vp); 485 486 bad1: 487 VOP_CLOSE(nd.ni_vp, FREAD, p->p_ucred, p); 488 bad: 489 if (ph != NULL) 490 free(ph, M_TEMP); 491 492 *last = addr; 493 vput(nd.ni_vp); 494 return (error); 495 } 496 497 /* 498 * Prepare an Elf binary's exec package 499 * 500 * First, set of the various offsets/lengths in the exec package. 501 * 502 * Then, mark the text image busy (so it can be demand paged) or error out if 503 * this is not possible. Finally, set up vmcmds for the text, data, bss, and 504 * stack segments. 505 */ 506 int 507 ELFNAME2(exec,makecmds)(struct proc *p, struct exec_package *epp) 508 { 509 Elf_Ehdr *eh = epp->ep_hdr; 510 Elf_Phdr *ph, *pp, *base_ph = NULL; 511 Elf_Addr phdr = 0, exe_base = 0; 512 int error, i; 513 char *interp = NULL; 514 u_long pos = 0, phsize; 515 u_int8_t os = OOS_NULL; 516 517 if (epp->ep_hdrvalid < sizeof(Elf_Ehdr)) 518 return (ENOEXEC); 519 520 if (ELFNAME(check_header)(eh) || 521 (eh->e_type != ET_EXEC && eh->e_type != ET_DYN)) 522 return (ENOEXEC); 523 524 /* 525 * check if vnode is in open for writing, because we want to demand- 526 * page out of it. if it is, don't do it, for various reasons. 527 */ 528 if (epp->ep_vp->v_writecount != 0) { 529 #ifdef DIAGNOSTIC 530 if (epp->ep_vp->v_flag & VTEXT) 531 panic("exec: a VTEXT vnode has writecount != 0"); 532 #endif 533 return (ETXTBSY); 534 } 535 /* 536 * Allocate space to hold all the program headers, and read them 537 * from the file 538 */ 539 phsize = eh->e_phnum * sizeof(Elf_Phdr); 540 ph = malloc(phsize, M_TEMP, M_WAITOK); 541 542 if ((error = ELFNAME(read_from)(p, epp->ep_vp, eh->e_phoff, (caddr_t)ph, 543 phsize)) != 0) 544 goto bad; 545 546 epp->ep_tsize = ELFDEFNNAME(NO_ADDR); 547 epp->ep_dsize = ELFDEFNNAME(NO_ADDR); 548 549 for (i = 0, pp = ph; i < eh->e_phnum; i++, pp++) { 550 if (pp->p_type == PT_INTERP && !interp) { 551 if (pp->p_filesz >= MAXPATHLEN) 552 goto bad; 553 interp = pool_get(&namei_pool, PR_WAITOK); 554 if ((error = ELFNAME(read_from)(p, epp->ep_vp, 555 pp->p_offset, interp, pp->p_filesz)) != 0) { 556 goto bad; 557 } 558 } else if (pp->p_type == PT_LOAD) { 559 if (base_ph == NULL) 560 base_ph = pp; 561 } 562 } 563 564 if (eh->e_type == ET_DYN) { 565 /* need an interpreter and load sections for PIE */ 566 if (interp == NULL || base_ph == NULL) 567 goto bad; 568 /* randomize exe_base for PIE */ 569 exe_base = uvm_map_pie(base_ph->p_align); 570 } 571 572 /* 573 * OK, we want a slightly different twist of the 574 * standard emulation package for "real" elf. 575 */ 576 epp->ep_emul = &ELFNAMEEND(emul); 577 pos = ELFDEFNNAME(NO_ADDR); 578 579 /* 580 * On the same architecture, we may be emulating different systems. 581 * See which one will accept this executable. 582 * 583 * Probe functions would normally see if the interpreter (if any) 584 * exists. Emulation packages may possibly replace the interpreter in 585 * *interp with a changed path (/emul/xxx/<path>), and also 586 * set the ep_emul field in the exec package structure. 587 */ 588 error = ENOEXEC; 589 p->p_os = OOS_OPENBSD; 590 #ifdef NATIVE_EXEC_ELF 591 if (ELFNAME(os_pt_note)(p, epp, epp->ep_hdr, "OpenBSD", 8, 4) == 0) { 592 goto native; 593 } 594 #endif 595 for (i = 0; ELFNAME(probes)[i].func != NULL && error; i++) { 596 error = (*ELFNAME(probes)[i].func)(p, epp, interp, &pos, &os); 597 } 598 if (!error) 599 p->p_os = os; 600 #ifndef NATIVE_EXEC_ELF 601 else 602 goto bad; 603 #else 604 native: 605 #endif /* NATIVE_EXEC_ELF */ 606 607 /* 608 * Load all the necessary sections 609 */ 610 for (i = 0, pp = ph; i < eh->e_phnum; i++, pp++) { 611 Elf_Addr addr, size = 0; 612 int prot = 0; 613 int flags = 0; 614 615 switch (pp->p_type) { 616 case PT_LOAD: 617 if (exe_base != 0) { 618 if (pp == base_ph) { 619 flags = VMCMD_BASE; 620 addr = exe_base; 621 } else { 622 flags = VMCMD_RELATIVE; 623 addr = pp->p_vaddr - base_ph->p_vaddr; 624 } 625 } else 626 addr = ELFDEFNNAME(NO_ADDR); 627 628 /* 629 * Calculates size of text and data segments 630 * by starting at first and going to end of last. 631 * 'rwx' sections are treated as data. 632 * this is correct for BSS_PLT, but may not be 633 * for DATA_PLT, is fine for TEXT_PLT. 634 */ 635 ELFNAME(load_psection)(&epp->ep_vmcmds, epp->ep_vp, 636 pp, &addr, &size, &prot, flags); 637 638 /* 639 * Update exe_base in case alignment was off. 640 * For PIE, addr is relative to exe_base so 641 * adjust it (non PIE exe_base is 0 so no change). 642 */ 643 if (flags == VMCMD_BASE) 644 exe_base = addr; 645 else 646 addr += exe_base; 647 648 /* 649 * Decide whether it's text or data by looking 650 * at the protection of the section 651 */ 652 if (prot & VM_PROT_WRITE) { 653 /* data section */ 654 if (epp->ep_dsize == ELFDEFNNAME(NO_ADDR)) { 655 epp->ep_daddr = addr; 656 epp->ep_dsize = size; 657 } else { 658 if (addr < epp->ep_daddr) { 659 epp->ep_dsize = 660 epp->ep_dsize + 661 epp->ep_daddr - 662 addr; 663 epp->ep_daddr = addr; 664 } else 665 epp->ep_dsize = addr+size - 666 epp->ep_daddr; 667 } 668 } else if (prot & VM_PROT_EXECUTE) { 669 /* text section */ 670 if (epp->ep_tsize == ELFDEFNNAME(NO_ADDR)) { 671 epp->ep_taddr = addr; 672 epp->ep_tsize = size; 673 } else { 674 if (addr < epp->ep_taddr) { 675 epp->ep_tsize = 676 epp->ep_tsize + 677 epp->ep_taddr - 678 addr; 679 epp->ep_taddr = addr; 680 } else 681 epp->ep_tsize = addr+size - 682 epp->ep_taddr; 683 } 684 } 685 break; 686 687 case PT_SHLIB: 688 error = ENOEXEC; 689 goto bad; 690 691 case PT_INTERP: 692 /* Already did this one */ 693 case PT_DYNAMIC: 694 case PT_NOTE: 695 break; 696 697 case PT_PHDR: 698 /* Note address of program headers (in text segment) */ 699 phdr = pp->p_vaddr; 700 break; 701 702 default: 703 /* 704 * Not fatal, we don't need to understand everything 705 * :-) 706 */ 707 break; 708 } 709 } 710 711 phdr += exe_base; 712 713 /* 714 * Strangely some linux programs may have all load sections marked 715 * writeable, in this case, textsize is not -1, but rather 0; 716 */ 717 if (epp->ep_tsize == ELFDEFNNAME(NO_ADDR)) 718 epp->ep_tsize = 0; 719 /* 720 * Another possibility is that it has all load sections marked 721 * read-only. Fake a zero-sized data segment right after the 722 * text segment. 723 */ 724 if (epp->ep_dsize == ELFDEFNNAME(NO_ADDR)) { 725 epp->ep_daddr = round_page(epp->ep_taddr + epp->ep_tsize); 726 epp->ep_dsize = 0; 727 } 728 729 epp->ep_interp = interp; 730 epp->ep_entry = eh->e_entry + exe_base; 731 732 /* 733 * Check if we found a dynamically linked binary and arrange to load 734 * its interpreter when the exec file is released. 735 */ 736 if (interp) { 737 struct elf_args *ap; 738 739 ap = malloc(sizeof(struct elf_args), M_TEMP, M_WAITOK); 740 741 ap->arg_phaddr = phdr; 742 ap->arg_phentsize = eh->e_phentsize; 743 ap->arg_phnum = eh->e_phnum; 744 ap->arg_entry = eh->e_entry + exe_base; 745 ap->arg_os = os; 746 747 epp->ep_emul_arg = ap; 748 epp->ep_interp_pos = pos; 749 } 750 751 free(ph, M_TEMP); 752 vn_marktext(epp->ep_vp); 753 return (exec_setup_stack(p, epp)); 754 755 bad: 756 if (interp) 757 pool_put(&namei_pool, interp); 758 free(ph, M_TEMP); 759 kill_vmcmds(&epp->ep_vmcmds); 760 return (ENOEXEC); 761 } 762 763 /* 764 * Phase II of load. It is now safe to load the interpreter. Info collected 765 * when loading the program is available for setup of the interpreter. 766 */ 767 int 768 ELFNAME2(exec,fixup)(struct proc *p, struct exec_package *epp) 769 { 770 char *interp; 771 int error; 772 struct elf_args *ap; 773 AuxInfo ai[ELF_AUX_ENTRIES], *a; 774 Elf_Addr pos = epp->ep_interp_pos; 775 776 if (epp->ep_interp == NULL) { 777 return (0); 778 } 779 780 interp = epp->ep_interp; 781 ap = epp->ep_emul_arg; 782 783 if ((error = ELFNAME(load_file)(p, interp, epp, ap, &pos)) != 0) { 784 free(ap, M_TEMP); 785 pool_put(&namei_pool, interp); 786 kill_vmcmds(&epp->ep_vmcmds); 787 return (error); 788 } 789 /* 790 * We have to do this ourselves... 791 */ 792 error = exec_process_vmcmds(p, epp); 793 794 /* 795 * Push extra arguments on the stack needed by dynamically 796 * linked binaries 797 */ 798 if (error == 0) { 799 a = ai; 800 801 a->au_id = AUX_phdr; 802 a->au_v = ap->arg_phaddr; 803 a++; 804 805 a->au_id = AUX_phent; 806 a->au_v = ap->arg_phentsize; 807 a++; 808 809 a->au_id = AUX_phnum; 810 a->au_v = ap->arg_phnum; 811 a++; 812 813 a->au_id = AUX_pagesz; 814 a->au_v = PAGE_SIZE; 815 a++; 816 817 a->au_id = AUX_base; 818 a->au_v = ap->arg_interp; 819 a++; 820 821 a->au_id = AUX_flags; 822 a->au_v = 0; 823 a++; 824 825 a->au_id = AUX_entry; 826 a->au_v = ap->arg_entry; 827 a++; 828 829 a->au_id = AUX_null; 830 a->au_v = 0; 831 a++; 832 833 error = copyout(ai, epp->ep_emul_argp, sizeof ai); 834 } 835 free(ap, M_TEMP); 836 pool_put(&namei_pool, interp); 837 return (error); 838 } 839 840 /* 841 * Older ELF binaries use EI_ABIVERSION (formerly EI_BRAND) to brand 842 * executables. Newer ELF binaries use EI_OSABI instead. 843 */ 844 char * 845 ELFNAME(check_brand)(Elf_Ehdr *eh) 846 { 847 if (eh->e_ident[EI_ABIVERSION] == '\0') 848 return (NULL); 849 return (&eh->e_ident[EI_ABIVERSION]); 850 } 851 852 int 853 ELFNAME(os_pt_note)(struct proc *p, struct exec_package *epp, Elf_Ehdr *eh, 854 char *os_name, size_t name_size, size_t desc_size) 855 { 856 Elf_Phdr *hph, *ph; 857 Elf_Note *np = NULL; 858 size_t phsize; 859 int error; 860 861 phsize = eh->e_phnum * sizeof(Elf_Phdr); 862 hph = malloc(phsize, M_TEMP, M_WAITOK); 863 if ((error = ELFNAME(read_from)(p, epp->ep_vp, eh->e_phoff, 864 (caddr_t)hph, phsize)) != 0) 865 goto out1; 866 867 for (ph = hph; ph < &hph[eh->e_phnum]; ph++) { 868 if (ph->p_type != PT_NOTE || 869 ph->p_filesz > 1024 || 870 ph->p_filesz < sizeof(Elf_Note) + name_size) 871 continue; 872 873 np = malloc(ph->p_filesz, M_TEMP, M_WAITOK); 874 if ((error = ELFNAME(read_from)(p, epp->ep_vp, ph->p_offset, 875 (caddr_t)np, ph->p_filesz)) != 0) 876 goto out2; 877 878 #if 0 879 if (np->type != ELF_NOTE_TYPE_OSVERSION) { 880 free(np, M_TEMP); 881 np = NULL; 882 continue; 883 } 884 #endif 885 886 /* Check the name and description sizes. */ 887 if (np->namesz != name_size || 888 np->descsz != desc_size) 889 goto out3; 890 891 if (bcmp((np + 1), os_name, name_size)) 892 goto out3; 893 894 /* XXX: We could check for the specific emulation here */ 895 /* All checks succeeded. */ 896 error = 0; 897 goto out2; 898 } 899 900 out3: 901 error = ENOEXEC; 902 out2: 903 if (np) 904 free(np, M_TEMP); 905 out1: 906 free(hph, M_TEMP); 907 return error; 908 } 909 910 struct countsegs_state { 911 int npsections; 912 }; 913 914 int ELFNAMEEND(coredump_countsegs)(struct proc *, void *, 915 struct uvm_coredump_state *); 916 917 struct writesegs_state { 918 Elf_Phdr *psections; 919 off_t secoff; 920 }; 921 922 int ELFNAMEEND(coredump_writeseghdrs)(struct proc *, void *, 923 struct uvm_coredump_state *); 924 925 int ELFNAMEEND(coredump_notes)(struct proc *, void *, size_t *); 926 int ELFNAMEEND(coredump_note)(struct proc *, void *, size_t *); 927 int ELFNAMEEND(coredump_writenote)(struct proc *, void *, Elf_Note *, 928 const char *, void *); 929 930 #define ELFROUNDSIZE 4 /* XXX Should it be sizeof(Elf_Word)? */ 931 #define elfround(x) roundup((x), ELFROUNDSIZE) 932 933 int 934 ELFNAMEEND(coredump)(struct proc *p, void *cookie) 935 { 936 #ifdef SMALL_KERNEL 937 return EPERM; 938 #else 939 Elf_Ehdr ehdr; 940 Elf_Phdr phdr, *psections; 941 struct countsegs_state cs; 942 struct writesegs_state ws; 943 off_t notestart, secstart, offset; 944 size_t notesize; 945 int error, i; 946 947 psections = NULL; 948 /* 949 * We have to make a total of 3 passes across the map: 950 * 951 * 1. Count the number of map entries (the number of 952 * PT_LOAD sections). 953 * 954 * 2. Write the P-section headers. 955 * 956 * 3. Write the P-sections. 957 */ 958 959 /* Pass 1: count the entries. */ 960 cs.npsections = 0; 961 error = uvm_coredump_walkmap(p, NULL, 962 ELFNAMEEND(coredump_countsegs), &cs); 963 if (error) 964 goto out; 965 966 /* Count the PT_NOTE section. */ 967 cs.npsections++; 968 969 /* Get the size of the notes. */ 970 error = ELFNAMEEND(coredump_notes)(p, NULL, ¬esize); 971 if (error) 972 goto out; 973 974 memset(&ehdr, 0, sizeof(ehdr)); 975 memcpy(ehdr.e_ident, ELFMAG, SELFMAG); 976 ehdr.e_ident[EI_CLASS] = ELF_TARG_CLASS; 977 ehdr.e_ident[EI_DATA] = ELF_TARG_DATA; 978 ehdr.e_ident[EI_VERSION] = EV_CURRENT; 979 /* XXX Should be the OSABI/ABI version of the executable. */ 980 ehdr.e_ident[EI_OSABI] = ELFOSABI_SYSV; 981 ehdr.e_ident[EI_ABIVERSION] = 0; 982 ehdr.e_type = ET_CORE; 983 /* XXX This should be the e_machine of the executable. */ 984 ehdr.e_machine = ELF_TARG_MACH; 985 ehdr.e_version = EV_CURRENT; 986 ehdr.e_entry = 0; 987 ehdr.e_phoff = sizeof(ehdr); 988 ehdr.e_shoff = 0; 989 ehdr.e_flags = 0; 990 ehdr.e_ehsize = sizeof(ehdr); 991 ehdr.e_phentsize = sizeof(Elf_Phdr); 992 ehdr.e_phnum = cs.npsections; 993 ehdr.e_shentsize = 0; 994 ehdr.e_shnum = 0; 995 ehdr.e_shstrndx = 0; 996 997 /* Write out the ELF header. */ 998 error = coredump_write(cookie, UIO_SYSSPACE, &ehdr, sizeof(ehdr)); 999 if (error) 1000 goto out; 1001 1002 offset = sizeof(ehdr); 1003 1004 notestart = offset + sizeof(phdr) * cs.npsections; 1005 secstart = notestart + notesize; 1006 1007 psections = malloc(cs.npsections * sizeof(Elf_Phdr), 1008 M_TEMP, M_WAITOK|M_ZERO); 1009 1010 /* Pass 2: now write the P-section headers. */ 1011 ws.secoff = secstart; 1012 ws.psections = psections; 1013 error = uvm_coredump_walkmap(p, cookie, 1014 ELFNAMEEND(coredump_writeseghdrs), &ws); 1015 if (error) 1016 goto out; 1017 1018 /* Write out the PT_NOTE header. */ 1019 ws.psections->p_type = PT_NOTE; 1020 ws.psections->p_offset = notestart; 1021 ws.psections->p_vaddr = 0; 1022 ws.psections->p_paddr = 0; 1023 ws.psections->p_filesz = notesize; 1024 ws.psections->p_memsz = 0; 1025 ws.psections->p_flags = PF_R; 1026 ws.psections->p_align = ELFROUNDSIZE; 1027 1028 error = coredump_write(cookie, UIO_SYSSPACE, psections, 1029 cs.npsections * sizeof(Elf_Phdr)); 1030 if (error) 1031 goto out; 1032 1033 #ifdef DIAGNOSTIC 1034 offset += cs.npsections * sizeof(Elf_Phdr); 1035 if (offset != notestart) 1036 panic("coredump: offset %lld != notestart %lld", 1037 (long long) offset, (long long) notestart); 1038 #endif 1039 1040 /* Write out the notes. */ 1041 error = ELFNAMEEND(coredump_notes)(p, cookie, ¬esize); 1042 if (error) 1043 goto out; 1044 1045 #ifdef DIAGNOSTIC 1046 offset += notesize; 1047 if (offset != secstart) 1048 panic("coredump: offset %lld != secstart %lld", 1049 (long long) offset, (long long) secstart); 1050 #endif 1051 1052 /* Pass 3: finally, write the sections themselves. */ 1053 for (i = 0; i < cs.npsections - 1; i++) { 1054 if (psections[i].p_filesz == 0) 1055 continue; 1056 1057 #ifdef DIAGNOSTIC 1058 if (offset != psections[i].p_offset) 1059 panic("coredump: offset %lld != p_offset[%d] %lld", 1060 (long long) offset, i, 1061 (long long) psections[i].p_filesz); 1062 #endif 1063 1064 error = coredump_write(cookie, UIO_USERSPACE, 1065 (void *)(vaddr_t)psections[i].p_vaddr, 1066 psections[i].p_filesz); 1067 if (error) 1068 goto out; 1069 1070 #ifdef DIAGNOSTIC 1071 offset += psections[i].p_filesz; 1072 #endif 1073 } 1074 1075 out: 1076 if (psections) 1077 free(psections, M_TEMP); 1078 return (error); 1079 #endif 1080 } 1081 1082 int 1083 ELFNAMEEND(coredump_countsegs)(struct proc *p, void *iocookie, 1084 struct uvm_coredump_state *us) 1085 { 1086 #ifndef SMALL_KERNEL 1087 struct countsegs_state *cs = us->cookie; 1088 1089 cs->npsections++; 1090 #endif 1091 return (0); 1092 } 1093 1094 int 1095 ELFNAMEEND(coredump_writeseghdrs)(struct proc *p, void *iocookie, 1096 struct uvm_coredump_state *us) 1097 { 1098 #ifndef SMALL_KERNEL 1099 struct writesegs_state *ws = us->cookie; 1100 Elf_Phdr phdr; 1101 vsize_t size, realsize; 1102 1103 size = us->end - us->start; 1104 realsize = us->realend - us->start; 1105 1106 phdr.p_type = PT_LOAD; 1107 phdr.p_offset = ws->secoff; 1108 phdr.p_vaddr = us->start; 1109 phdr.p_paddr = 0; 1110 phdr.p_filesz = realsize; 1111 phdr.p_memsz = size; 1112 phdr.p_flags = 0; 1113 if (us->prot & VM_PROT_READ) 1114 phdr.p_flags |= PF_R; 1115 if (us->prot & VM_PROT_WRITE) 1116 phdr.p_flags |= PF_W; 1117 if (us->prot & VM_PROT_EXECUTE) 1118 phdr.p_flags |= PF_X; 1119 phdr.p_align = PAGE_SIZE; 1120 1121 ws->secoff += phdr.p_filesz; 1122 *ws->psections++ = phdr; 1123 #endif 1124 1125 return (0); 1126 } 1127 1128 int 1129 ELFNAMEEND(coredump_notes)(struct proc *p, void *iocookie, size_t *sizep) 1130 { 1131 #ifndef SMALL_KERNEL 1132 struct ps_strings pss; 1133 struct iovec iov; 1134 struct uio uio; 1135 struct elfcore_procinfo cpi; 1136 Elf_Note nhdr; 1137 struct process *pr = p->p_p; 1138 struct proc *q; 1139 size_t size, notesize; 1140 int error; 1141 1142 size = 0; 1143 1144 /* First, write an elfcore_procinfo. */ 1145 notesize = sizeof(nhdr) + elfround(sizeof("OpenBSD")) + 1146 elfround(sizeof(cpi)); 1147 if (iocookie) { 1148 bzero(&cpi, sizeof(cpi)); 1149 1150 cpi.cpi_version = ELFCORE_PROCINFO_VERSION; 1151 cpi.cpi_cpisize = sizeof(cpi); 1152 cpi.cpi_signo = p->p_sigacts->ps_sig; 1153 cpi.cpi_sigcode = p->p_sigacts->ps_code; 1154 1155 cpi.cpi_sigpend = p->p_siglist; 1156 cpi.cpi_sigmask = p->p_sigmask; 1157 cpi.cpi_sigignore = p->p_sigignore; 1158 cpi.cpi_sigcatch = p->p_sigcatch; 1159 1160 cpi.cpi_pid = pr->ps_pid; 1161 cpi.cpi_ppid = pr->ps_pptr->ps_pid; 1162 cpi.cpi_pgrp = pr->ps_pgid; 1163 if (pr->ps_session->s_leader) 1164 cpi.cpi_sid = pr->ps_session->s_leader->ps_pid; 1165 else 1166 cpi.cpi_sid = 0; 1167 1168 cpi.cpi_ruid = p->p_cred->p_ruid; 1169 cpi.cpi_euid = p->p_ucred->cr_uid; 1170 cpi.cpi_svuid = p->p_cred->p_svuid; 1171 1172 cpi.cpi_rgid = p->p_cred->p_rgid; 1173 cpi.cpi_egid = p->p_ucred->cr_gid; 1174 cpi.cpi_svgid = p->p_cred->p_svgid; 1175 1176 (void)strlcpy(cpi.cpi_name, p->p_comm, sizeof(cpi.cpi_name)); 1177 1178 nhdr.namesz = sizeof("OpenBSD"); 1179 nhdr.descsz = sizeof(cpi); 1180 nhdr.type = NT_OPENBSD_PROCINFO; 1181 1182 error = ELFNAMEEND(coredump_writenote)(p, iocookie, &nhdr, 1183 "OpenBSD", &cpi); 1184 if (error) 1185 return (error); 1186 } 1187 size += notesize; 1188 1189 /* Second, write an NT_OPENBSD_AUXV note. */ 1190 notesize = sizeof(nhdr) + elfround(sizeof("OpenBSD")) + 1191 elfround(p->p_emul->e_arglen * sizeof(char *)); 1192 if (iocookie) { 1193 iov.iov_base = &pss; 1194 iov.iov_len = sizeof(pss); 1195 uio.uio_iov = &iov; 1196 uio.uio_iovcnt = 1; 1197 uio.uio_offset = (off_t)(vaddr_t)PS_STRINGS; 1198 uio.uio_resid = sizeof(pss); 1199 uio.uio_segflg = UIO_SYSSPACE; 1200 uio.uio_rw = UIO_READ; 1201 uio.uio_procp = NULL; 1202 1203 error = uvm_io(&p->p_vmspace->vm_map, &uio, 0); 1204 if (error) 1205 return (error); 1206 1207 if (pss.ps_envstr == NULL) 1208 return (EIO); 1209 1210 nhdr.namesz = sizeof("OpenBSD"); 1211 nhdr.descsz = p->p_emul->e_arglen * sizeof(char *); 1212 nhdr.type = NT_OPENBSD_AUXV; 1213 1214 error = coredump_write(iocookie, UIO_SYSSPACE, 1215 &nhdr, sizeof(nhdr)); 1216 if (error) 1217 return (error); 1218 1219 error = coredump_write(iocookie, UIO_SYSSPACE, 1220 "OpenBSD", elfround(nhdr.namesz)); 1221 if (error) 1222 return (error); 1223 1224 error = coredump_write(iocookie, UIO_USERSPACE, 1225 pss.ps_envstr + pss.ps_nenvstr + 1, nhdr.descsz); 1226 if (error) 1227 return (error); 1228 } 1229 size += notesize; 1230 1231 #ifdef PT_WCOOKIE 1232 notesize = sizeof(nhdr) + elfround(sizeof("OpenBSD")) + 1233 elfround(sizeof(register_t)); 1234 if (iocookie) { 1235 register_t wcookie; 1236 1237 nhdr.namesz = sizeof("OpenBSD"); 1238 nhdr.descsz = sizeof(register_t); 1239 nhdr.type = NT_OPENBSD_WCOOKIE; 1240 1241 wcookie = process_get_wcookie(p); 1242 error = ELFNAMEEND(coredump_writenote)(p, iocookie, &nhdr, 1243 "OpenBSD", &wcookie); 1244 if (error) 1245 return (error); 1246 } 1247 size += notesize; 1248 #endif 1249 1250 /* 1251 * Now write the register info for the thread that caused the 1252 * coredump. 1253 */ 1254 error = ELFNAMEEND(coredump_note)(p, iocookie, ¬esize); 1255 if (error) 1256 return (error); 1257 size += notesize; 1258 1259 /* 1260 * Now, for each thread, write the register info and any other 1261 * per-thread notes. Since we're dumping core, we don't bother 1262 * locking. 1263 */ 1264 TAILQ_FOREACH(q, &pr->ps_threads, p_thr_link) { 1265 if (q == p) /* we've taken care of this thread */ 1266 continue; 1267 error = ELFNAMEEND(coredump_note)(q, iocookie, ¬esize); 1268 if (error) 1269 return (error); 1270 size += notesize; 1271 } 1272 1273 *sizep = size; 1274 #endif 1275 return (0); 1276 } 1277 1278 int 1279 ELFNAMEEND(coredump_note)(struct proc *p, void *iocookie, size_t *sizep) 1280 { 1281 #ifndef SMALL_KERNEL 1282 Elf_Note nhdr; 1283 int size, notesize, error; 1284 int namesize; 1285 char name[64+ELFROUNDSIZE]; 1286 struct reg intreg; 1287 #ifdef PT_GETFPREGS 1288 struct fpreg freg; 1289 #endif 1290 1291 size = 0; 1292 1293 snprintf(name, sizeof(name)-ELFROUNDSIZE, "%s@%d", 1294 "OpenBSD", p->p_pid); 1295 namesize = strlen(name) + 1; 1296 memset(name + namesize, 0, elfround(namesize) - namesize); 1297 1298 notesize = sizeof(nhdr) + elfround(namesize) + elfround(sizeof(intreg)); 1299 if (iocookie) { 1300 error = process_read_regs(p, &intreg); 1301 if (error) 1302 return (error); 1303 1304 nhdr.namesz = namesize; 1305 nhdr.descsz = sizeof(intreg); 1306 nhdr.type = NT_OPENBSD_REGS; 1307 1308 error = ELFNAMEEND(coredump_writenote)(p, iocookie, &nhdr, 1309 name, &intreg); 1310 if (error) 1311 return (error); 1312 1313 } 1314 size += notesize; 1315 1316 #ifdef PT_GETFPREGS 1317 notesize = sizeof(nhdr) + elfround(namesize) + elfround(sizeof(freg)); 1318 if (iocookie) { 1319 error = process_read_fpregs(p, &freg); 1320 if (error) 1321 return (error); 1322 1323 nhdr.namesz = namesize; 1324 nhdr.descsz = sizeof(freg); 1325 nhdr.type = NT_OPENBSD_FPREGS; 1326 1327 error = ELFNAMEEND(coredump_writenote)(p, iocookie, &nhdr, 1328 name, &freg); 1329 if (error) 1330 return (error); 1331 } 1332 size += notesize; 1333 #endif 1334 1335 *sizep = size; 1336 /* XXX Add hook for machdep per-LWP notes. */ 1337 #endif 1338 return (0); 1339 } 1340 1341 int 1342 ELFNAMEEND(coredump_writenote)(struct proc *p, void *cookie, Elf_Note *nhdr, 1343 const char *name, void *data) 1344 { 1345 #ifdef SMALL_KERNEL 1346 return EPERM; 1347 #else 1348 int error; 1349 1350 error = coredump_write(cookie, UIO_SYSSPACE, nhdr, sizeof(*nhdr)); 1351 if (error) 1352 return error; 1353 1354 error = coredump_write(cookie, UIO_SYSSPACE, name, 1355 elfround(nhdr->namesz)); 1356 if (error) 1357 return error; 1358 1359 return coredump_write(cookie, UIO_SYSSPACE, data, nhdr->descsz); 1360 #endif 1361 } 1362