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 (c) 1998 by Sun Microsystems, Inc. 28*0Sstevel@tonic-gate * All rights reserved. 29*0Sstevel@tonic-gate */ 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.6 */ 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #pragma weak elf_strptr = _elf_strptr 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate #include "syn.h" 37*0Sstevel@tonic-gate #include "libelf.h" 38*0Sstevel@tonic-gate #include "decl.h" 39*0Sstevel@tonic-gate #include "msg.h" 40*0Sstevel@tonic-gate 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate char * 43*0Sstevel@tonic-gate elf_strptr(Elf * elf, size_t ndx, size_t off) 44*0Sstevel@tonic-gate { 45*0Sstevel@tonic-gate Elf_Scn * s; 46*0Sstevel@tonic-gate Elf_Data * d; 47*0Sstevel@tonic-gate char * rc; 48*0Sstevel@tonic-gate 49*0Sstevel@tonic-gate if (elf == 0) 50*0Sstevel@tonic-gate return (0); 51*0Sstevel@tonic-gate if ((s = elf_getscn(elf, ndx)) == 0) { 52*0Sstevel@tonic-gate _elf_seterr(EREQ_STRSCN, 0); 53*0Sstevel@tonic-gate return (0); 54*0Sstevel@tonic-gate } 55*0Sstevel@tonic-gate READLOCKS(elf, s) 56*0Sstevel@tonic-gate if (elf->ed_class == ELFCLASS32) { 57*0Sstevel@tonic-gate Elf32_Shdr* sh = (Elf32_Shdr*)s->s_shdr; 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate if ((sh == 0) || (sh->sh_type != SHT_STRTAB)) { 60*0Sstevel@tonic-gate _elf_seterr(EREQ_STRSCN, 0); 61*0Sstevel@tonic-gate READUNLOCKS(elf, s) 62*0Sstevel@tonic-gate return (0); 63*0Sstevel@tonic-gate } 64*0Sstevel@tonic-gate } else if (elf->ed_class == ELFCLASS64) { 65*0Sstevel@tonic-gate Elf64_Shdr* sh = (Elf64_Shdr*)s->s_shdr; 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate if ((sh == 0) || (sh->sh_type != SHT_STRTAB)) { 68*0Sstevel@tonic-gate _elf_seterr(EREQ_STRSCN, 0); 69*0Sstevel@tonic-gate READUNLOCKS(elf, s) 70*0Sstevel@tonic-gate return (0); 71*0Sstevel@tonic-gate } 72*0Sstevel@tonic-gate } else { 73*0Sstevel@tonic-gate _elf_seterr(EREQ_STRSCN, 0); 74*0Sstevel@tonic-gate READUNLOCKS(elf, s) 75*0Sstevel@tonic-gate return (0); 76*0Sstevel@tonic-gate } 77*0Sstevel@tonic-gate 78*0Sstevel@tonic-gate 79*0Sstevel@tonic-gate /* 80*0Sstevel@tonic-gate * If the layout bit is set, use the offsets and 81*0Sstevel@tonic-gate * sizes in the data buffers. Otherwise, take 82*0Sstevel@tonic-gate * data buffers in order. 83*0Sstevel@tonic-gate */ 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate d = 0; 86*0Sstevel@tonic-gate if (elf->ed_uflags & ELF_F_LAYOUT) { 87*0Sstevel@tonic-gate while ((d = _elf_locked_getdata(s, d)) != 0) { 88*0Sstevel@tonic-gate if (d->d_buf == 0) 89*0Sstevel@tonic-gate continue; 90*0Sstevel@tonic-gate if ((off >= d->d_off) && 91*0Sstevel@tonic-gate (off < d->d_off + d->d_size)) { 92*0Sstevel@tonic-gate rc = (char *)d->d_buf + off - d->d_off; 93*0Sstevel@tonic-gate READUNLOCKS(elf, s) 94*0Sstevel@tonic-gate return (rc); 95*0Sstevel@tonic-gate } 96*0Sstevel@tonic-gate } 97*0Sstevel@tonic-gate } else { 98*0Sstevel@tonic-gate size_t sz = 0, j; 99*0Sstevel@tonic-gate while ((d = _elf_locked_getdata(s, d)) != 0) { 100*0Sstevel@tonic-gate if (((j = d->d_align) > 1) && (sz % j != 0)) { 101*0Sstevel@tonic-gate j -= sz % j; 102*0Sstevel@tonic-gate sz += j; 103*0Sstevel@tonic-gate if (off < j) 104*0Sstevel@tonic-gate break; 105*0Sstevel@tonic-gate off -= j; 106*0Sstevel@tonic-gate } 107*0Sstevel@tonic-gate if (d->d_buf != 0) { 108*0Sstevel@tonic-gate if (off < d->d_size) { 109*0Sstevel@tonic-gate rc = (char *)d->d_buf + off; 110*0Sstevel@tonic-gate READUNLOCKS(elf, s) 111*0Sstevel@tonic-gate return (rc); 112*0Sstevel@tonic-gate } 113*0Sstevel@tonic-gate } 114*0Sstevel@tonic-gate sz += d->d_size; 115*0Sstevel@tonic-gate if (off < d->d_size) 116*0Sstevel@tonic-gate break; 117*0Sstevel@tonic-gate off -= d->d_size; 118*0Sstevel@tonic-gate } 119*0Sstevel@tonic-gate } 120*0Sstevel@tonic-gate _elf_seterr(EREQ_STROFF, 0); 121*0Sstevel@tonic-gate READUNLOCKS(elf, s) 122*0Sstevel@tonic-gate return (0); 123*0Sstevel@tonic-gate } 124