1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 23*0Sstevel@tonic-gate /* All Rights Reserved */ 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate 26*0Sstevel@tonic-gate /* 27*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 28*0Sstevel@tonic-gate * Use is subject to license terms. 29*0Sstevel@tonic-gate */ 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #if !defined(_ELF64) 34*0Sstevel@tonic-gate #pragma weak elf_update = _elf_update 35*0Sstevel@tonic-gate #endif 36*0Sstevel@tonic-gate 37*0Sstevel@tonic-gate #include "syn.h" 38*0Sstevel@tonic-gate #include <memory.h> 39*0Sstevel@tonic-gate #include <malloc.h> 40*0Sstevel@tonic-gate #include <limits.h> 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate #include <sgs.h> 43*0Sstevel@tonic-gate #include "decl.h" 44*0Sstevel@tonic-gate #include "msg.h" 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate /* 47*0Sstevel@tonic-gate * This module is compiled twice, the second time having 48*0Sstevel@tonic-gate * -D_ELF64 defined. The following set of macros, along 49*0Sstevel@tonic-gate * with machelf.h, represent the differences between the 50*0Sstevel@tonic-gate * two compilations. Be careful *not* to add any class- 51*0Sstevel@tonic-gate * dependent code (anything that has elf32 or elf64 in the 52*0Sstevel@tonic-gate * name) to this code without hiding it behind a switch- 53*0Sstevel@tonic-gate * able macro like these. 54*0Sstevel@tonic-gate */ 55*0Sstevel@tonic-gate #if defined(_ELF64) 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate #define FSZ_LONG ELF64_FSZ_XWORD 58*0Sstevel@tonic-gate #define ELFCLASS ELFCLASS64 59*0Sstevel@tonic-gate #define _elf_snode_init _elf64_snode_init 60*0Sstevel@tonic-gate #define _elfxx_cookscn _elf64_cookscn 61*0Sstevel@tonic-gate #define _elf_upd_lib _elf64_upd_lib 62*0Sstevel@tonic-gate #define elf_fsize elf64_fsize 63*0Sstevel@tonic-gate #define _elf_entsz _elf64_entsz 64*0Sstevel@tonic-gate #define _elf_msize _elf64_msize 65*0Sstevel@tonic-gate #define _elf_upd_usr _elf64_upd_usr 66*0Sstevel@tonic-gate #define wrt wrt64 67*0Sstevel@tonic-gate #define elf_xlatetof elf64_xlatetof 68*0Sstevel@tonic-gate #define _elfxx_update _elf64_update 69*0Sstevel@tonic-gate 70*0Sstevel@tonic-gate #else /* ELF32 */ 71*0Sstevel@tonic-gate 72*0Sstevel@tonic-gate #define FSZ_LONG ELF32_FSZ_WORD 73*0Sstevel@tonic-gate #define ELFCLASS ELFCLASS32 74*0Sstevel@tonic-gate #define _elf_snode_init _elf32_snode_init 75*0Sstevel@tonic-gate #define _elfxx_cookscn _elf32_cookscn 76*0Sstevel@tonic-gate #define _elf_upd_lib _elf32_upd_lib 77*0Sstevel@tonic-gate #define elf_fsize elf32_fsize 78*0Sstevel@tonic-gate #define _elf_entsz _elf32_entsz 79*0Sstevel@tonic-gate #define _elf_msize _elf32_msize 80*0Sstevel@tonic-gate #define _elf_upd_usr _elf32_upd_usr 81*0Sstevel@tonic-gate #define wrt wrt32 82*0Sstevel@tonic-gate #define elf_xlatetof elf32_xlatetof 83*0Sstevel@tonic-gate #define _elfxx_update _elf32_update 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate #endif /* ELF64 */ 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate 88*0Sstevel@tonic-gate /* 89*0Sstevel@tonic-gate * Output file update 90*0Sstevel@tonic-gate * These functions walk an Elf structure, update its information, 91*0Sstevel@tonic-gate * and optionally write the output file. Because the application 92*0Sstevel@tonic-gate * may control of the output file layout, two upd_... routines 93*0Sstevel@tonic-gate * exist. They're similar but too different to merge cleanly. 94*0Sstevel@tonic-gate * 95*0Sstevel@tonic-gate * The library defines a "dirty" bit to force parts of the file 96*0Sstevel@tonic-gate * to be written on update. These routines ignore the dirty bit 97*0Sstevel@tonic-gate * and do everything. A minimal update routine might be useful 98*0Sstevel@tonic-gate * someday. 99*0Sstevel@tonic-gate */ 100*0Sstevel@tonic-gate 101*0Sstevel@tonic-gate 102*0Sstevel@tonic-gate static size_t 103*0Sstevel@tonic-gate _elf_upd_lib(Elf * elf) 104*0Sstevel@tonic-gate { 105*0Sstevel@tonic-gate NOTE(ASSUMING_PROTECTED(*elf)) 106*0Sstevel@tonic-gate Lword hi; 107*0Sstevel@tonic-gate Lword hibit; 108*0Sstevel@tonic-gate Elf_Scn * s; 109*0Sstevel@tonic-gate register Xword sz; 110*0Sstevel@tonic-gate Ehdr * eh = elf->ed_ehdr; 111*0Sstevel@tonic-gate unsigned ver = eh->e_version; 112*0Sstevel@tonic-gate register char *p = (char *)eh->e_ident; 113*0Sstevel@tonic-gate size_t scncnt; 114*0Sstevel@tonic-gate 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate /* 117*0Sstevel@tonic-gate * Ehdr and Phdr table go first 118*0Sstevel@tonic-gate */ 119*0Sstevel@tonic-gate p[EI_MAG0] = ELFMAG0; 120*0Sstevel@tonic-gate p[EI_MAG1] = ELFMAG1; 121*0Sstevel@tonic-gate p[EI_MAG2] = ELFMAG2; 122*0Sstevel@tonic-gate p[EI_MAG3] = ELFMAG3; 123*0Sstevel@tonic-gate p[EI_CLASS] = ELFCLASS; 124*0Sstevel@tonic-gate /* LINTED */ 125*0Sstevel@tonic-gate p[EI_VERSION] = (Byte)ver; 126*0Sstevel@tonic-gate hi = elf_fsize(ELF_T_EHDR, 1, ver); 127*0Sstevel@tonic-gate /* LINTED */ 128*0Sstevel@tonic-gate eh->e_ehsize = (Half)hi; 129*0Sstevel@tonic-gate if (eh->e_phnum != 0) { 130*0Sstevel@tonic-gate /* LINTED */ 131*0Sstevel@tonic-gate eh->e_phentsize = (Half)elf_fsize(ELF_T_PHDR, 1, ver); 132*0Sstevel@tonic-gate /* LINTED */ 133*0Sstevel@tonic-gate eh->e_phoff = (Off)hi; 134*0Sstevel@tonic-gate hi += eh->e_phentsize * eh->e_phnum; 135*0Sstevel@tonic-gate } else { 136*0Sstevel@tonic-gate eh->e_phoff = 0; 137*0Sstevel@tonic-gate eh->e_phentsize = 0; 138*0Sstevel@tonic-gate } 139*0Sstevel@tonic-gate 140*0Sstevel@tonic-gate 141*0Sstevel@tonic-gate /* 142*0Sstevel@tonic-gate * Loop through sections, skipping index zero. 143*0Sstevel@tonic-gate * Compute section size before changing hi. 144*0Sstevel@tonic-gate * Allow null buffers for NOBITS. 145*0Sstevel@tonic-gate */ 146*0Sstevel@tonic-gate 147*0Sstevel@tonic-gate if ((s = elf->ed_hdscn) == 0) { 148*0Sstevel@tonic-gate eh->e_shnum = 0; 149*0Sstevel@tonic-gate scncnt = 0; 150*0Sstevel@tonic-gate } else { 151*0Sstevel@tonic-gate scncnt = 1; 152*0Sstevel@tonic-gate *(Shdr *)s->s_shdr = _elf_snode_init.sb_shdr; 153*0Sstevel@tonic-gate s = s->s_next; 154*0Sstevel@tonic-gate } 155*0Sstevel@tonic-gate 156*0Sstevel@tonic-gate hibit = 0; 157*0Sstevel@tonic-gate for (; s != 0; s = s->s_next) { 158*0Sstevel@tonic-gate register Dnode *d; 159*0Sstevel@tonic-gate register Lword fsz, j; 160*0Sstevel@tonic-gate Shdr *sh = s->s_shdr; 161*0Sstevel@tonic-gate 162*0Sstevel@tonic-gate scncnt++; 163*0Sstevel@tonic-gate if (sh->sh_type == SHT_NULL) { 164*0Sstevel@tonic-gate *sh = _elf_snode_init.sb_shdr; 165*0Sstevel@tonic-gate continue; 166*0Sstevel@tonic-gate } 167*0Sstevel@tonic-gate 168*0Sstevel@tonic-gate if ((s->s_myflags & SF_READY) == 0) 169*0Sstevel@tonic-gate (void) _elfxx_cookscn(s); 170*0Sstevel@tonic-gate 171*0Sstevel@tonic-gate sh->sh_addralign = 1; 172*0Sstevel@tonic-gate if ((sz = (Xword)_elf_entsz(sh->sh_type, ver)) != 0) 173*0Sstevel@tonic-gate /* LINTED */ 174*0Sstevel@tonic-gate sh->sh_entsize = (Half)sz; 175*0Sstevel@tonic-gate sz = 0; 176*0Sstevel@tonic-gate for (d = s->s_hdnode; d != 0; d = d->db_next) { 177*0Sstevel@tonic-gate if ((fsz = elf_fsize(d->db_data.d_type, 178*0Sstevel@tonic-gate 1, ver)) == 0) 179*0Sstevel@tonic-gate return (0); 180*0Sstevel@tonic-gate 181*0Sstevel@tonic-gate j = _elf_msize(d->db_data.d_type, ver); 182*0Sstevel@tonic-gate fsz *= (d->db_data.d_size / j); 183*0Sstevel@tonic-gate d->db_osz = (size_t)fsz; 184*0Sstevel@tonic-gate if ((j = d->db_data.d_align) > 1) { 185*0Sstevel@tonic-gate if (j > sh->sh_addralign) 186*0Sstevel@tonic-gate sh->sh_addralign = (Xword)j; 187*0Sstevel@tonic-gate 188*0Sstevel@tonic-gate if (sz % j != 0) 189*0Sstevel@tonic-gate sz += j - sz % j; 190*0Sstevel@tonic-gate } 191*0Sstevel@tonic-gate d->db_data.d_off = (off_t)sz; 192*0Sstevel@tonic-gate d->db_xoff = sz; 193*0Sstevel@tonic-gate sz += (Xword)fsz; 194*0Sstevel@tonic-gate } 195*0Sstevel@tonic-gate 196*0Sstevel@tonic-gate sh->sh_size = sz; 197*0Sstevel@tonic-gate /* 198*0Sstevel@tonic-gate * We want to take into account the offsets for NOBITS 199*0Sstevel@tonic-gate * sections and let the "sh_offsets" point to where 200*0Sstevel@tonic-gate * the section would 'conceptually' fit within 201*0Sstevel@tonic-gate * the file (as required by the ABI). 202*0Sstevel@tonic-gate * 203*0Sstevel@tonic-gate * But - we must also make sure that the NOBITS does 204*0Sstevel@tonic-gate * not take up any actual space in the file. We preserve 205*0Sstevel@tonic-gate * the actual offset into the file in the 'hibit' variable. 206*0Sstevel@tonic-gate * When we come to the first non-NOBITS section after a 207*0Sstevel@tonic-gate * encountering a NOBITS section the hi counter is restored 208*0Sstevel@tonic-gate * to its proper place in the file. 209*0Sstevel@tonic-gate */ 210*0Sstevel@tonic-gate if (sh->sh_type == SHT_NOBITS) { 211*0Sstevel@tonic-gate if (hibit == 0) 212*0Sstevel@tonic-gate hibit = hi; 213*0Sstevel@tonic-gate } else { 214*0Sstevel@tonic-gate if (hibit) { 215*0Sstevel@tonic-gate hi = hibit; 216*0Sstevel@tonic-gate hibit = 0; 217*0Sstevel@tonic-gate } 218*0Sstevel@tonic-gate } 219*0Sstevel@tonic-gate j = sh->sh_addralign; 220*0Sstevel@tonic-gate if ((fsz = hi % j) != 0) 221*0Sstevel@tonic-gate hi += j - fsz; 222*0Sstevel@tonic-gate 223*0Sstevel@tonic-gate /* LINTED */ 224*0Sstevel@tonic-gate sh->sh_offset = (Off)hi; 225*0Sstevel@tonic-gate hi += sz; 226*0Sstevel@tonic-gate } 227*0Sstevel@tonic-gate 228*0Sstevel@tonic-gate /* 229*0Sstevel@tonic-gate * if last section was a 'NOBITS' section then we need to 230*0Sstevel@tonic-gate * restore the 'hi' counter to point to the end of the last 231*0Sstevel@tonic-gate * non 'NOBITS' section. 232*0Sstevel@tonic-gate */ 233*0Sstevel@tonic-gate if (hibit) { 234*0Sstevel@tonic-gate hi = hibit; 235*0Sstevel@tonic-gate hibit = 0; 236*0Sstevel@tonic-gate } 237*0Sstevel@tonic-gate 238*0Sstevel@tonic-gate /* 239*0Sstevel@tonic-gate * Shdr table last 240*0Sstevel@tonic-gate */ 241*0Sstevel@tonic-gate if (scncnt != 0) { 242*0Sstevel@tonic-gate if (hi % FSZ_LONG != 0) 243*0Sstevel@tonic-gate hi += FSZ_LONG - hi % FSZ_LONG; 244*0Sstevel@tonic-gate /* LINTED */ 245*0Sstevel@tonic-gate eh->e_shoff = (Off)hi; 246*0Sstevel@tonic-gate /* 247*0Sstevel@tonic-gate * If we are using 'extended sections' then the 248*0Sstevel@tonic-gate * e_shnum is stored in the sh_size field of the 249*0Sstevel@tonic-gate * first section header. 250*0Sstevel@tonic-gate * 251*0Sstevel@tonic-gate * NOTE: we set e_shnum to '0' because it's specified 252*0Sstevel@tonic-gate * this way in the gABI, and in the hopes that 253*0Sstevel@tonic-gate * this will cause less problems to unaware 254*0Sstevel@tonic-gate * tools then if we'd set it to SHN_XINDEX (0xffff). 255*0Sstevel@tonic-gate */ 256*0Sstevel@tonic-gate if (scncnt < SHN_LORESERVE) 257*0Sstevel@tonic-gate eh->e_shnum = scncnt; 258*0Sstevel@tonic-gate else { 259*0Sstevel@tonic-gate Shdr *sh; 260*0Sstevel@tonic-gate sh = (Shdr *)elf->ed_hdscn->s_shdr; 261*0Sstevel@tonic-gate sh->sh_size = scncnt; 262*0Sstevel@tonic-gate eh->e_shnum = 0; 263*0Sstevel@tonic-gate } 264*0Sstevel@tonic-gate /* LINTED */ 265*0Sstevel@tonic-gate eh->e_shentsize = (Half)elf_fsize(ELF_T_SHDR, 1, ver); 266*0Sstevel@tonic-gate hi += eh->e_shentsize * scncnt; 267*0Sstevel@tonic-gate } else { 268*0Sstevel@tonic-gate eh->e_shoff = 0; 269*0Sstevel@tonic-gate eh->e_shentsize = 0; 270*0Sstevel@tonic-gate } 271*0Sstevel@tonic-gate 272*0Sstevel@tonic-gate #if !(defined(_LP64) && defined(_ELF64)) 273*0Sstevel@tonic-gate if (hi > INT_MAX) { 274*0Sstevel@tonic-gate _elf_seterr(EFMT_FBIG, 0); 275*0Sstevel@tonic-gate return (0); 276*0Sstevel@tonic-gate } 277*0Sstevel@tonic-gate #endif 278*0Sstevel@tonic-gate 279*0Sstevel@tonic-gate return ((size_t)hi); 280*0Sstevel@tonic-gate } 281*0Sstevel@tonic-gate 282*0Sstevel@tonic-gate 283*0Sstevel@tonic-gate 284*0Sstevel@tonic-gate static size_t 285*0Sstevel@tonic-gate _elf_upd_usr(Elf * elf) 286*0Sstevel@tonic-gate { 287*0Sstevel@tonic-gate NOTE(ASSUMING_PROTECTED(*elf)) 288*0Sstevel@tonic-gate Lword hi; 289*0Sstevel@tonic-gate Elf_Scn * s; 290*0Sstevel@tonic-gate register Xword sz; 291*0Sstevel@tonic-gate Ehdr * eh = elf->ed_ehdr; 292*0Sstevel@tonic-gate unsigned ver = eh->e_version; 293*0Sstevel@tonic-gate register char *p = (char *)eh->e_ident; 294*0Sstevel@tonic-gate 295*0Sstevel@tonic-gate 296*0Sstevel@tonic-gate /* 297*0Sstevel@tonic-gate * Ehdr and Phdr table go first 298*0Sstevel@tonic-gate */ 299*0Sstevel@tonic-gate p[EI_MAG0] = ELFMAG0; 300*0Sstevel@tonic-gate p[EI_MAG1] = ELFMAG1; 301*0Sstevel@tonic-gate p[EI_MAG2] = ELFMAG2; 302*0Sstevel@tonic-gate p[EI_MAG3] = ELFMAG3; 303*0Sstevel@tonic-gate p[EI_CLASS] = ELFCLASS; 304*0Sstevel@tonic-gate /* LINTED */ 305*0Sstevel@tonic-gate p[EI_VERSION] = (Byte)ver; 306*0Sstevel@tonic-gate hi = elf_fsize(ELF_T_EHDR, 1, ver); 307*0Sstevel@tonic-gate /* LINTED */ 308*0Sstevel@tonic-gate eh->e_ehsize = (Half)hi; 309*0Sstevel@tonic-gate 310*0Sstevel@tonic-gate /* 311*0Sstevel@tonic-gate * If phnum is zero, phoff "should" be zero too, 312*0Sstevel@tonic-gate * but the application is responsible for it. 313*0Sstevel@tonic-gate * Allow a non-zero value here and update the 314*0Sstevel@tonic-gate * hi water mark accordingly. 315*0Sstevel@tonic-gate */ 316*0Sstevel@tonic-gate 317*0Sstevel@tonic-gate if (eh->e_phnum != 0) 318*0Sstevel@tonic-gate /* LINTED */ 319*0Sstevel@tonic-gate eh->e_phentsize = (Half)elf_fsize(ELF_T_PHDR, 1, ver); 320*0Sstevel@tonic-gate else 321*0Sstevel@tonic-gate eh->e_phentsize = 0; 322*0Sstevel@tonic-gate if ((sz = eh->e_phoff + eh->e_phentsize * eh->e_phnum) > hi) 323*0Sstevel@tonic-gate hi = sz; 324*0Sstevel@tonic-gate 325*0Sstevel@tonic-gate /* 326*0Sstevel@tonic-gate * Loop through sections, skipping index zero. 327*0Sstevel@tonic-gate * Compute section size before changing hi. 328*0Sstevel@tonic-gate * Allow null buffers for NOBITS. 329*0Sstevel@tonic-gate */ 330*0Sstevel@tonic-gate 331*0Sstevel@tonic-gate if ((s = elf->ed_hdscn) == 0) 332*0Sstevel@tonic-gate eh->e_shnum = 0; 333*0Sstevel@tonic-gate else { 334*0Sstevel@tonic-gate eh->e_shnum = 1; 335*0Sstevel@tonic-gate *(Shdr*)s->s_shdr = _elf_snode_init.sb_shdr; 336*0Sstevel@tonic-gate s = s->s_next; 337*0Sstevel@tonic-gate } 338*0Sstevel@tonic-gate for (; s != 0; s = s->s_next) { 339*0Sstevel@tonic-gate register Dnode *d; 340*0Sstevel@tonic-gate register Xword fsz, j; 341*0Sstevel@tonic-gate Shdr *sh = s->s_shdr; 342*0Sstevel@tonic-gate 343*0Sstevel@tonic-gate if ((s->s_myflags & SF_READY) == 0) 344*0Sstevel@tonic-gate (void) _elfxx_cookscn(s); 345*0Sstevel@tonic-gate 346*0Sstevel@tonic-gate ++eh->e_shnum; 347*0Sstevel@tonic-gate sz = 0; 348*0Sstevel@tonic-gate for (d = s->s_hdnode; d != 0; d = d->db_next) { 349*0Sstevel@tonic-gate if ((fsz = (Xword)elf_fsize(d->db_data.d_type, 1, 350*0Sstevel@tonic-gate ver)) == 0) 351*0Sstevel@tonic-gate return (0); 352*0Sstevel@tonic-gate j = (Xword)_elf_msize(d->db_data.d_type, ver); 353*0Sstevel@tonic-gate fsz *= (Xword)(d->db_data.d_size / j); 354*0Sstevel@tonic-gate d->db_osz = (size_t)fsz; 355*0Sstevel@tonic-gate 356*0Sstevel@tonic-gate if ((sh->sh_type != SHT_NOBITS) && 357*0Sstevel@tonic-gate ((j = (Xword)(d->db_data.d_off + d->db_osz)) > sz)) 358*0Sstevel@tonic-gate sz = j; 359*0Sstevel@tonic-gate } 360*0Sstevel@tonic-gate if (sh->sh_size < sz) { 361*0Sstevel@tonic-gate _elf_seterr(EFMT_SCNSZ, 0); 362*0Sstevel@tonic-gate return (0); 363*0Sstevel@tonic-gate } 364*0Sstevel@tonic-gate if ((sh->sh_type != SHT_NOBITS) && 365*0Sstevel@tonic-gate (hi < sh->sh_offset + sh->sh_size)) 366*0Sstevel@tonic-gate hi = sh->sh_offset + sh->sh_size; 367*0Sstevel@tonic-gate } 368*0Sstevel@tonic-gate 369*0Sstevel@tonic-gate /* 370*0Sstevel@tonic-gate * Shdr table last. Comment above for phnum/phoff applies here. 371*0Sstevel@tonic-gate */ 372*0Sstevel@tonic-gate if (eh->e_shnum != 0) 373*0Sstevel@tonic-gate /* LINTED */ 374*0Sstevel@tonic-gate eh->e_shentsize = (Half)elf_fsize(ELF_T_SHDR, 1, ver); 375*0Sstevel@tonic-gate else 376*0Sstevel@tonic-gate eh->e_shentsize = 0; 377*0Sstevel@tonic-gate 378*0Sstevel@tonic-gate if ((sz = eh->e_shoff + eh->e_shentsize * eh->e_shnum) > hi) 379*0Sstevel@tonic-gate hi = sz; 380*0Sstevel@tonic-gate 381*0Sstevel@tonic-gate #if !(defined(_LP64) && defined(_ELF64)) 382*0Sstevel@tonic-gate if (hi > INT_MAX) { 383*0Sstevel@tonic-gate _elf_seterr(EFMT_FBIG, 0); 384*0Sstevel@tonic-gate return (0); 385*0Sstevel@tonic-gate } 386*0Sstevel@tonic-gate #endif 387*0Sstevel@tonic-gate 388*0Sstevel@tonic-gate return ((size_t)hi); 389*0Sstevel@tonic-gate } 390*0Sstevel@tonic-gate 391*0Sstevel@tonic-gate 392*0Sstevel@tonic-gate static size_t 393*0Sstevel@tonic-gate wrt(Elf * elf, Xword outsz, unsigned fill, int update_cmd) 394*0Sstevel@tonic-gate { 395*0Sstevel@tonic-gate NOTE(ASSUMING_PROTECTED(*elf)) 396*0Sstevel@tonic-gate Elf_Data dst, src; 397*0Sstevel@tonic-gate unsigned flag; 398*0Sstevel@tonic-gate Xword hi, sz; 399*0Sstevel@tonic-gate char *image; 400*0Sstevel@tonic-gate Elf_Scn *s; 401*0Sstevel@tonic-gate Ehdr *eh = elf->ed_ehdr; 402*0Sstevel@tonic-gate unsigned ver = eh->e_version; 403*0Sstevel@tonic-gate unsigned encode = eh->e_ident[EI_DATA]; 404*0Sstevel@tonic-gate int byte; 405*0Sstevel@tonic-gate 406*0Sstevel@tonic-gate /* 407*0Sstevel@tonic-gate * Two issues can cause trouble for the output file. 408*0Sstevel@tonic-gate * First, begin() with ELF_C_RDWR opens a file for both 409*0Sstevel@tonic-gate * read and write. On the write update(), the library 410*0Sstevel@tonic-gate * has to read everything it needs before truncating 411*0Sstevel@tonic-gate * the file. Second, using mmap for both read and write 412*0Sstevel@tonic-gate * is too tricky. Consequently, the library disables mmap 413*0Sstevel@tonic-gate * on the read side. Using mmap for the output saves swap 414*0Sstevel@tonic-gate * space, because that mapping is SHARED, not PRIVATE. 415*0Sstevel@tonic-gate * 416*0Sstevel@tonic-gate * If the file is write-only, there can be nothing of 417*0Sstevel@tonic-gate * interest to bother with. 418*0Sstevel@tonic-gate * 419*0Sstevel@tonic-gate * The following reads the entire file, which might be 420*0Sstevel@tonic-gate * more than necessary. Better safe than sorry. 421*0Sstevel@tonic-gate */ 422*0Sstevel@tonic-gate 423*0Sstevel@tonic-gate if ((elf->ed_myflags & EDF_READ) && 424*0Sstevel@tonic-gate (_elf_vm(elf, (size_t)0, elf->ed_fsz) != OK_YES)) 425*0Sstevel@tonic-gate return (0); 426*0Sstevel@tonic-gate 427*0Sstevel@tonic-gate flag = elf->ed_myflags & EDF_WRALLOC; 428*0Sstevel@tonic-gate if ((image = _elf_outmap(elf->ed_fd, outsz, &flag)) == 0) 429*0Sstevel@tonic-gate return (0); 430*0Sstevel@tonic-gate 431*0Sstevel@tonic-gate if (flag == 0) 432*0Sstevel@tonic-gate elf->ed_myflags |= EDF_IMALLOC; 433*0Sstevel@tonic-gate 434*0Sstevel@tonic-gate /* 435*0Sstevel@tonic-gate * If an error occurs below, a "dirty" bit may be cleared 436*0Sstevel@tonic-gate * improperly. To save a second pass through the file, 437*0Sstevel@tonic-gate * this code sets the dirty bit on the elf descriptor 438*0Sstevel@tonic-gate * when an error happens, assuming that will "cover" any 439*0Sstevel@tonic-gate * accidents. 440*0Sstevel@tonic-gate */ 441*0Sstevel@tonic-gate 442*0Sstevel@tonic-gate /* 443*0Sstevel@tonic-gate * Hi is needed only when 'fill' is non-zero. 444*0Sstevel@tonic-gate * Fill is non-zero only when the library 445*0Sstevel@tonic-gate * calculates file/section/data buffer offsets. 446*0Sstevel@tonic-gate * The lib guarantees they increase monotonically. 447*0Sstevel@tonic-gate * That guarantees proper filling below. 448*0Sstevel@tonic-gate */ 449*0Sstevel@tonic-gate 450*0Sstevel@tonic-gate 451*0Sstevel@tonic-gate /* 452*0Sstevel@tonic-gate * Ehdr first 453*0Sstevel@tonic-gate */ 454*0Sstevel@tonic-gate 455*0Sstevel@tonic-gate src.d_buf = (Elf_Void *)eh; 456*0Sstevel@tonic-gate src.d_type = ELF_T_EHDR; 457*0Sstevel@tonic-gate src.d_size = sizeof (Ehdr); 458*0Sstevel@tonic-gate src.d_version = EV_CURRENT; 459*0Sstevel@tonic-gate dst.d_buf = (Elf_Void *)image; 460*0Sstevel@tonic-gate dst.d_size = eh->e_ehsize; 461*0Sstevel@tonic-gate dst.d_version = ver; 462*0Sstevel@tonic-gate if (elf_xlatetof(&dst, &src, encode) == 0) 463*0Sstevel@tonic-gate return (0); 464*0Sstevel@tonic-gate elf->ed_ehflags &= ~ELF_F_DIRTY; 465*0Sstevel@tonic-gate hi = eh->e_ehsize; 466*0Sstevel@tonic-gate 467*0Sstevel@tonic-gate /* 468*0Sstevel@tonic-gate * Phdr table if one exists 469*0Sstevel@tonic-gate */ 470*0Sstevel@tonic-gate 471*0Sstevel@tonic-gate if (eh->e_phnum != 0) { 472*0Sstevel@tonic-gate unsigned work; 473*0Sstevel@tonic-gate /* 474*0Sstevel@tonic-gate * Unlike other library data, phdr table is 475*0Sstevel@tonic-gate * in the user version. Change src buffer 476*0Sstevel@tonic-gate * version here, fix it after translation. 477*0Sstevel@tonic-gate */ 478*0Sstevel@tonic-gate 479*0Sstevel@tonic-gate src.d_buf = (Elf_Void *)elf->ed_phdr; 480*0Sstevel@tonic-gate src.d_type = ELF_T_PHDR; 481*0Sstevel@tonic-gate src.d_size = elf->ed_phdrsz; 482*0Sstevel@tonic-gate ELFACCESSDATA(work, _elf_work) 483*0Sstevel@tonic-gate src.d_version = work; 484*0Sstevel@tonic-gate dst.d_buf = (Elf_Void *)(image + eh->e_phoff); 485*0Sstevel@tonic-gate dst.d_size = eh->e_phnum * eh->e_phentsize; 486*0Sstevel@tonic-gate hi = (Xword)(eh->e_phoff + dst.d_size); 487*0Sstevel@tonic-gate if (elf_xlatetof(&dst, &src, encode) == 0) { 488*0Sstevel@tonic-gate elf->ed_uflags |= ELF_F_DIRTY; 489*0Sstevel@tonic-gate return (0); 490*0Sstevel@tonic-gate } 491*0Sstevel@tonic-gate elf->ed_phflags &= ~ELF_F_DIRTY; 492*0Sstevel@tonic-gate src.d_version = EV_CURRENT; 493*0Sstevel@tonic-gate } 494*0Sstevel@tonic-gate 495*0Sstevel@tonic-gate /* 496*0Sstevel@tonic-gate * Loop through sections 497*0Sstevel@tonic-gate */ 498*0Sstevel@tonic-gate 499*0Sstevel@tonic-gate ELFACCESSDATA(byte, _elf_byte); 500*0Sstevel@tonic-gate for (s = elf->ed_hdscn; s != 0; s = s->s_next) { 501*0Sstevel@tonic-gate register Dnode *d, *prevd; 502*0Sstevel@tonic-gate Xword off = 0; 503*0Sstevel@tonic-gate Shdr *sh = s->s_shdr; 504*0Sstevel@tonic-gate char *start = image + sh->sh_offset; 505*0Sstevel@tonic-gate char *here; 506*0Sstevel@tonic-gate 507*0Sstevel@tonic-gate /* 508*0Sstevel@tonic-gate * Just "clean" DIRTY flag for "empty" sections. Even if 509*0Sstevel@tonic-gate * NOBITS needs padding, the next thing in the 510*0Sstevel@tonic-gate * file will provide it. (And if this NOBITS is 511*0Sstevel@tonic-gate * the last thing in the file, no padding needed.) 512*0Sstevel@tonic-gate */ 513*0Sstevel@tonic-gate if ((sh->sh_type == SHT_NOBITS) || 514*0Sstevel@tonic-gate (sh->sh_type == SHT_NULL)) { 515*0Sstevel@tonic-gate d = s->s_hdnode, prevd = 0; 516*0Sstevel@tonic-gate for (; d != 0; prevd = d, d = d->db_next) 517*0Sstevel@tonic-gate d->db_uflags &= ~ELF_F_DIRTY; 518*0Sstevel@tonic-gate continue; 519*0Sstevel@tonic-gate } 520*0Sstevel@tonic-gate /* 521*0Sstevel@tonic-gate * Clear out the memory between the end of the last 522*0Sstevel@tonic-gate * section and the begining of this section. 523*0Sstevel@tonic-gate */ 524*0Sstevel@tonic-gate if (fill && (sh->sh_offset > hi)) { 525*0Sstevel@tonic-gate sz = sh->sh_offset - hi; 526*0Sstevel@tonic-gate (void) memset(start - sz, byte, sz); 527*0Sstevel@tonic-gate } 528*0Sstevel@tonic-gate 529*0Sstevel@tonic-gate 530*0Sstevel@tonic-gate for (d = s->s_hdnode, prevd = 0; 531*0Sstevel@tonic-gate d != 0; prevd = d, d = d->db_next) { 532*0Sstevel@tonic-gate d->db_uflags &= ~ELF_F_DIRTY; 533*0Sstevel@tonic-gate here = start + d->db_data.d_off; 534*0Sstevel@tonic-gate 535*0Sstevel@tonic-gate /* 536*0Sstevel@tonic-gate * Clear out the memory between the end of the 537*0Sstevel@tonic-gate * last update and the start of this data buffer. 538*0Sstevel@tonic-gate */ 539*0Sstevel@tonic-gate if (fill && (d->db_data.d_off > off)) { 540*0Sstevel@tonic-gate sz = (Xword)(d->db_data.d_off - off); 541*0Sstevel@tonic-gate (void) memset(here - sz, byte, sz); 542*0Sstevel@tonic-gate } 543*0Sstevel@tonic-gate 544*0Sstevel@tonic-gate if ((d->db_myflags & DBF_READY) == 0) { 545*0Sstevel@tonic-gate SCNLOCK(s); 546*0Sstevel@tonic-gate if (_elf_locked_getdata(s, &prevd->db_data) != 547*0Sstevel@tonic-gate &d->db_data) { 548*0Sstevel@tonic-gate elf->ed_uflags |= ELF_F_DIRTY; 549*0Sstevel@tonic-gate SCNUNLOCK(s); 550*0Sstevel@tonic-gate return (0); 551*0Sstevel@tonic-gate } 552*0Sstevel@tonic-gate SCNUNLOCK(s); 553*0Sstevel@tonic-gate } 554*0Sstevel@tonic-gate dst.d_buf = (Elf_Void *)here; 555*0Sstevel@tonic-gate dst.d_size = d->db_osz; 556*0Sstevel@tonic-gate 557*0Sstevel@tonic-gate /* 558*0Sstevel@tonic-gate * Copy the translated bits out to the destination 559*0Sstevel@tonic-gate * image. 560*0Sstevel@tonic-gate */ 561*0Sstevel@tonic-gate if (elf_xlatetof(&dst, &d->db_data, encode) == 0) { 562*0Sstevel@tonic-gate elf->ed_uflags |= ELF_F_DIRTY; 563*0Sstevel@tonic-gate return (0); 564*0Sstevel@tonic-gate } 565*0Sstevel@tonic-gate 566*0Sstevel@tonic-gate off = (Xword)(d->db_data.d_off + dst.d_size); 567*0Sstevel@tonic-gate } 568*0Sstevel@tonic-gate hi = sh->sh_offset + sh->sh_size; 569*0Sstevel@tonic-gate } 570*0Sstevel@tonic-gate 571*0Sstevel@tonic-gate /* 572*0Sstevel@tonic-gate * Shdr table last 573*0Sstevel@tonic-gate */ 574*0Sstevel@tonic-gate 575*0Sstevel@tonic-gate if (fill && (eh->e_shoff > hi)) { 576*0Sstevel@tonic-gate sz = eh->e_shoff - hi; 577*0Sstevel@tonic-gate (void) memset(image + hi, byte, sz); 578*0Sstevel@tonic-gate } 579*0Sstevel@tonic-gate 580*0Sstevel@tonic-gate src.d_type = ELF_T_SHDR; 581*0Sstevel@tonic-gate src.d_size = sizeof (Shdr); 582*0Sstevel@tonic-gate dst.d_buf = (Elf_Void *)(image + eh->e_shoff); 583*0Sstevel@tonic-gate dst.d_size = eh->e_shentsize; 584*0Sstevel@tonic-gate for (s = elf->ed_hdscn; s != 0; s = s->s_next) { 585*0Sstevel@tonic-gate assert((uintptr_t)dst.d_buf < ((uintptr_t)image + outsz)); 586*0Sstevel@tonic-gate s->s_shflags &= ~ELF_F_DIRTY; 587*0Sstevel@tonic-gate s->s_uflags &= ~ELF_F_DIRTY; 588*0Sstevel@tonic-gate src.d_buf = s->s_shdr; 589*0Sstevel@tonic-gate 590*0Sstevel@tonic-gate if (elf_xlatetof(&dst, &src, encode) == 0) { 591*0Sstevel@tonic-gate elf->ed_uflags |= ELF_F_DIRTY; 592*0Sstevel@tonic-gate return (0); 593*0Sstevel@tonic-gate } 594*0Sstevel@tonic-gate 595*0Sstevel@tonic-gate dst.d_buf = (char *)dst.d_buf + eh->e_shentsize; 596*0Sstevel@tonic-gate } 597*0Sstevel@tonic-gate /* 598*0Sstevel@tonic-gate * ELF_C_WRIMAGE signifyes that we build the memory image, but 599*0Sstevel@tonic-gate * that we do not actually write it to disk. This is used 600*0Sstevel@tonic-gate * by ld(1) to build up a full image of an elf file and then 601*0Sstevel@tonic-gate * to process the file before it's actually written out to 602*0Sstevel@tonic-gate * disk. This saves ld(1) the overhead of having to write 603*0Sstevel@tonic-gate * the image out to disk twice. 604*0Sstevel@tonic-gate */ 605*0Sstevel@tonic-gate if (update_cmd == ELF_C_WRIMAGE) { 606*0Sstevel@tonic-gate elf->ed_uflags &= ~ELF_F_DIRTY; 607*0Sstevel@tonic-gate elf->ed_wrimage = image; 608*0Sstevel@tonic-gate elf->ed_wrimagesz = outsz; 609*0Sstevel@tonic-gate return (outsz); 610*0Sstevel@tonic-gate } 611*0Sstevel@tonic-gate 612*0Sstevel@tonic-gate if (_elf_outsync(elf->ed_fd, image, outsz, 613*0Sstevel@tonic-gate ((elf->ed_myflags & EDF_IMALLOC) ? 0 : 1)) != 0) { 614*0Sstevel@tonic-gate elf->ed_uflags &= ~ELF_F_DIRTY; 615*0Sstevel@tonic-gate elf->ed_myflags &= ~EDF_IMALLOC; 616*0Sstevel@tonic-gate return (outsz); 617*0Sstevel@tonic-gate } 618*0Sstevel@tonic-gate 619*0Sstevel@tonic-gate elf->ed_uflags |= ELF_F_DIRTY; 620*0Sstevel@tonic-gate return (0); 621*0Sstevel@tonic-gate } 622*0Sstevel@tonic-gate 623*0Sstevel@tonic-gate 624*0Sstevel@tonic-gate 625*0Sstevel@tonic-gate 626*0Sstevel@tonic-gate /* 627*0Sstevel@tonic-gate * The following is a private interface between the linkers (ld & ld.so.1) 628*0Sstevel@tonic-gate * and libelf: 629*0Sstevel@tonic-gate * 630*0Sstevel@tonic-gate * elf_update(elf, ELF_C_WRIMAGE) 631*0Sstevel@tonic-gate * This will cause full image representing the elf file 632*0Sstevel@tonic-gate * described by the elf pointer to be built in memory. If the 633*0Sstevel@tonic-gate * elf pointer has a valid file descriptor associated with it 634*0Sstevel@tonic-gate * we will attempt to build the memory image from mmap()'ed 635*0Sstevel@tonic-gate * storage. If the elf descriptor does not have a valid 636*0Sstevel@tonic-gate * file descriptor (opened with elf_begin(0, ELF_C_IMAGE, 0)) 637*0Sstevel@tonic-gate * then the image will be allocated from dynamic memory (malloc()). 638*0Sstevel@tonic-gate * 639*0Sstevel@tonic-gate * elf_update() will return the size of the memory image built 640*0Sstevel@tonic-gate * when sucessful. 641*0Sstevel@tonic-gate * 642*0Sstevel@tonic-gate * When a subsequent call to elf_update() with ELF_C_WRITE as 643*0Sstevel@tonic-gate * the command is performed it will sync the image created 644*0Sstevel@tonic-gate * by ELF_C_WRIMAGE to disk (if fd available) and 645*0Sstevel@tonic-gate * free the memory allocated. 646*0Sstevel@tonic-gate */ 647*0Sstevel@tonic-gate 648*0Sstevel@tonic-gate off_t 649*0Sstevel@tonic-gate _elfxx_update(Elf * elf, Elf_Cmd cmd) 650*0Sstevel@tonic-gate { 651*0Sstevel@tonic-gate size_t sz; 652*0Sstevel@tonic-gate unsigned u; 653*0Sstevel@tonic-gate Ehdr *eh = elf->ed_ehdr; 654*0Sstevel@tonic-gate 655*0Sstevel@tonic-gate if (elf == 0) 656*0Sstevel@tonic-gate return (-1); 657*0Sstevel@tonic-gate 658*0Sstevel@tonic-gate ELFWLOCK(elf) 659*0Sstevel@tonic-gate switch (cmd) { 660*0Sstevel@tonic-gate default: 661*0Sstevel@tonic-gate _elf_seterr(EREQ_UPDATE, 0); 662*0Sstevel@tonic-gate ELFUNLOCK(elf) 663*0Sstevel@tonic-gate return (-1); 664*0Sstevel@tonic-gate 665*0Sstevel@tonic-gate case ELF_C_WRIMAGE: 666*0Sstevel@tonic-gate if ((elf->ed_myflags & EDF_WRITE) == 0) { 667*0Sstevel@tonic-gate _elf_seterr(EREQ_UPDWRT, 0); 668*0Sstevel@tonic-gate ELFUNLOCK(elf) 669*0Sstevel@tonic-gate return (-1); 670*0Sstevel@tonic-gate } 671*0Sstevel@tonic-gate break; 672*0Sstevel@tonic-gate case ELF_C_WRITE: 673*0Sstevel@tonic-gate if ((elf->ed_myflags & EDF_WRITE) == 0) { 674*0Sstevel@tonic-gate _elf_seterr(EREQ_UPDWRT, 0); 675*0Sstevel@tonic-gate ELFUNLOCK(elf) 676*0Sstevel@tonic-gate return (-1); 677*0Sstevel@tonic-gate } 678*0Sstevel@tonic-gate if (elf->ed_wrimage) { 679*0Sstevel@tonic-gate if (elf->ed_myflags & EDF_WRALLOC) { 680*0Sstevel@tonic-gate free(elf->ed_wrimage); 681*0Sstevel@tonic-gate /* 682*0Sstevel@tonic-gate * The size is still returned even 683*0Sstevel@tonic-gate * though nothing is actually written 684*0Sstevel@tonic-gate * out. This is just to be consistant 685*0Sstevel@tonic-gate * with the rest of the interface. 686*0Sstevel@tonic-gate */ 687*0Sstevel@tonic-gate sz = elf->ed_wrimagesz; 688*0Sstevel@tonic-gate elf->ed_wrimage = 0; 689*0Sstevel@tonic-gate elf->ed_wrimagesz = 0; 690*0Sstevel@tonic-gate ELFUNLOCK(elf); 691*0Sstevel@tonic-gate return ((off_t)sz); 692*0Sstevel@tonic-gate } 693*0Sstevel@tonic-gate sz = _elf_outsync(elf->ed_fd, elf->ed_wrimage, 694*0Sstevel@tonic-gate elf->ed_wrimagesz, 695*0Sstevel@tonic-gate (elf->ed_myflags & EDF_IMALLOC ? 0 : 1)); 696*0Sstevel@tonic-gate elf->ed_myflags &= ~EDF_IMALLOC; 697*0Sstevel@tonic-gate elf->ed_wrimage = 0; 698*0Sstevel@tonic-gate elf->ed_wrimagesz = 0; 699*0Sstevel@tonic-gate ELFUNLOCK(elf); 700*0Sstevel@tonic-gate return ((off_t)sz); 701*0Sstevel@tonic-gate } 702*0Sstevel@tonic-gate /* FALLTHROUGH */ 703*0Sstevel@tonic-gate case ELF_C_NULL: 704*0Sstevel@tonic-gate break; 705*0Sstevel@tonic-gate } 706*0Sstevel@tonic-gate 707*0Sstevel@tonic-gate if (eh == 0) { 708*0Sstevel@tonic-gate _elf_seterr(ESEQ_EHDR, 0); 709*0Sstevel@tonic-gate ELFUNLOCK(elf) 710*0Sstevel@tonic-gate return (-1); 711*0Sstevel@tonic-gate } 712*0Sstevel@tonic-gate 713*0Sstevel@tonic-gate if ((u = eh->e_version) > EV_CURRENT) { 714*0Sstevel@tonic-gate _elf_seterr(EREQ_VER, 0); 715*0Sstevel@tonic-gate ELFUNLOCK(elf) 716*0Sstevel@tonic-gate return (-1); 717*0Sstevel@tonic-gate } 718*0Sstevel@tonic-gate 719*0Sstevel@tonic-gate if (u == EV_NONE) 720*0Sstevel@tonic-gate eh->e_version = EV_CURRENT; 721*0Sstevel@tonic-gate 722*0Sstevel@tonic-gate if ((u = eh->e_ident[EI_DATA]) == ELFDATANONE) { 723*0Sstevel@tonic-gate unsigned encode; 724*0Sstevel@tonic-gate 725*0Sstevel@tonic-gate ELFACCESSDATA(encode, _elf_encode) 726*0Sstevel@tonic-gate if (encode == ELFDATANONE) { 727*0Sstevel@tonic-gate _elf_seterr(EREQ_ENCODE, 0); 728*0Sstevel@tonic-gate ELFUNLOCK(elf) 729*0Sstevel@tonic-gate return (-1); 730*0Sstevel@tonic-gate } 731*0Sstevel@tonic-gate /* LINTED */ 732*0Sstevel@tonic-gate eh->e_ident[EI_DATA] = (Byte)encode; 733*0Sstevel@tonic-gate } 734*0Sstevel@tonic-gate 735*0Sstevel@tonic-gate u = 1; 736*0Sstevel@tonic-gate if (elf->ed_uflags & ELF_F_LAYOUT) { 737*0Sstevel@tonic-gate sz = _elf_upd_usr(elf); 738*0Sstevel@tonic-gate u = 0; 739*0Sstevel@tonic-gate } else 740*0Sstevel@tonic-gate sz = _elf_upd_lib(elf); 741*0Sstevel@tonic-gate 742*0Sstevel@tonic-gate if ((sz != 0) && ((cmd == ELF_C_WRITE) || (cmd == ELF_C_WRIMAGE))) 743*0Sstevel@tonic-gate sz = wrt(elf, (Xword)sz, u, cmd); 744*0Sstevel@tonic-gate 745*0Sstevel@tonic-gate if (sz == 0) { 746*0Sstevel@tonic-gate ELFUNLOCK(elf) 747*0Sstevel@tonic-gate return (-1); 748*0Sstevel@tonic-gate } 749*0Sstevel@tonic-gate 750*0Sstevel@tonic-gate ELFUNLOCK(elf) 751*0Sstevel@tonic-gate return ((off_t)sz); 752*0Sstevel@tonic-gate } 753*0Sstevel@tonic-gate 754*0Sstevel@tonic-gate 755*0Sstevel@tonic-gate #ifndef _ELF64 756*0Sstevel@tonic-gate /* class-independent, only needs to be compiled once */ 757*0Sstevel@tonic-gate 758*0Sstevel@tonic-gate off_t 759*0Sstevel@tonic-gate elf_update(Elf *elf, Elf_Cmd cmd) 760*0Sstevel@tonic-gate { 761*0Sstevel@tonic-gate if (elf == 0) 762*0Sstevel@tonic-gate return (-1); 763*0Sstevel@tonic-gate 764*0Sstevel@tonic-gate if (elf->ed_class == ELFCLASS32) 765*0Sstevel@tonic-gate return (_elf32_update(elf, cmd)); 766*0Sstevel@tonic-gate else if (elf->ed_class == ELFCLASS64) { 767*0Sstevel@tonic-gate return (_elf64_update(elf, cmd)); 768*0Sstevel@tonic-gate } 769*0Sstevel@tonic-gate 770*0Sstevel@tonic-gate _elf_seterr(EREQ_CLASS, 0); 771*0Sstevel@tonic-gate return (-1); 772*0Sstevel@tonic-gate } 773*0Sstevel@tonic-gate 774*0Sstevel@tonic-gate /* 775*0Sstevel@tonic-gate * 4106312, 4106398, This is an ad-hoc means for the 32-bit 776*0Sstevel@tonic-gate * Elf64 version of libld.so.3 to get around the limitation 777*0Sstevel@tonic-gate * of a 32-bit d_off field. This is only intended to be 778*0Sstevel@tonic-gate * used by libld to relocate symbols in large NOBITS sections. 779*0Sstevel@tonic-gate */ 780*0Sstevel@tonic-gate Elf64_Off 781*0Sstevel@tonic-gate _elf_getxoff(Elf_Data * d) 782*0Sstevel@tonic-gate { 783*0Sstevel@tonic-gate return (((Dnode *)d)->db_xoff); 784*0Sstevel@tonic-gate } 785*0Sstevel@tonic-gate #endif /* !_ELF64 */ 786