17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 55aefb655Srie * Common Development and Distribution License (the "License"). 65aefb655Srie * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 21fb1354edSrie 227c478bd9Sstevel@tonic-gate /* 23cce0e03bSab * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277257d1b4Sraf /* 287257d1b4Sraf * Copyright (c) 1988 AT&T 297257d1b4Sraf * All Rights Reserved 307257d1b4Sraf */ 317257d1b4Sraf 327c478bd9Sstevel@tonic-gate #include <string.h> 337c478bd9Sstevel@tonic-gate #include <stdio.h> 347c478bd9Sstevel@tonic-gate #include <unistd.h> 357c478bd9Sstevel@tonic-gate #include <sys/stat.h> 367c478bd9Sstevel@tonic-gate #include <sys/mman.h> 377c478bd9Sstevel@tonic-gate #include <fcntl.h> 387c478bd9Sstevel@tonic-gate #include <limits.h> 397c478bd9Sstevel@tonic-gate #include <dlfcn.h> 407c478bd9Sstevel@tonic-gate #include <errno.h> 417c478bd9Sstevel@tonic-gate #include <link.h> 425aefb655Srie #include <debug.h> 435aefb655Srie #include <conv.h> 447c478bd9Sstevel@tonic-gate #include "_rtld.h" 457c478bd9Sstevel@tonic-gate #include "_audit.h" 467c478bd9Sstevel@tonic-gate #include "_elf.h" 477c478bd9Sstevel@tonic-gate #include "msg.h" 487c478bd9Sstevel@tonic-gate 49aa736cbeSrie static Fct *vector[] = { 507c478bd9Sstevel@tonic-gate &elf_fct, 517c478bd9Sstevel@tonic-gate #ifdef A_OUT 527c478bd9Sstevel@tonic-gate &aout_fct, 537c478bd9Sstevel@tonic-gate #endif 547c478bd9Sstevel@tonic-gate 0 557c478bd9Sstevel@tonic-gate }; 567c478bd9Sstevel@tonic-gate 577c478bd9Sstevel@tonic-gate /* 587c478bd9Sstevel@tonic-gate * If a load filter flag is in effect, and this object is a filter, trigger the 597c478bd9Sstevel@tonic-gate * loading of all its filtees. The load filter flag is in effect when creating 607c478bd9Sstevel@tonic-gate * configuration files, or when under the control of ldd(1), or the LD_LOADFLTR 617c478bd9Sstevel@tonic-gate * environment variable is set, or this object was built with the -zloadfltr 627c478bd9Sstevel@tonic-gate * flag. Otherwise, filtee loading is deferred until triggered by a relocation. 637c478bd9Sstevel@tonic-gate */ 647c478bd9Sstevel@tonic-gate static void 659aa23310Srie load_filtees(Rt_map *lmp, int *in_nfavl) 667c478bd9Sstevel@tonic-gate { 677c478bd9Sstevel@tonic-gate if ((FLAGS1(lmp) & MSK_RT_FILTER) && 687c478bd9Sstevel@tonic-gate ((FLAGS(lmp) & FLG_RT_LOADFLTR) || 697c478bd9Sstevel@tonic-gate (LIST(lmp)->lm_tflags & LML_TFLG_LOADFLTR))) { 7075e7992aSrie Dyninfo *dip = DYNINFO(lmp); 717c478bd9Sstevel@tonic-gate uint_t cnt, max = DYNINFOCNT(lmp); 727c478bd9Sstevel@tonic-gate Slookup sl; 737c478bd9Sstevel@tonic-gate 7475e7992aSrie /* 7575e7992aSrie * Initialize the symbol lookup data structure. 7675e7992aSrie */ 7775e7992aSrie SLOOKUP_INIT(sl, 0, lmp, lmp, ld_entry_cnt, 0, 0, 0, 0, 0); 787c478bd9Sstevel@tonic-gate 797c478bd9Sstevel@tonic-gate for (cnt = 0; cnt < max; cnt++, dip++) { 807c478bd9Sstevel@tonic-gate if (((dip->di_flags & MSK_DI_FILTER) == 0) || 817c478bd9Sstevel@tonic-gate ((dip->di_flags & FLG_DI_AUXFLTR) && 827c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_NOAUXFLTR))) 837c478bd9Sstevel@tonic-gate continue; 849aa23310Srie (void) elf_lookup_filtee(&sl, 0, 0, cnt, in_nfavl); 857c478bd9Sstevel@tonic-gate } 867c478bd9Sstevel@tonic-gate } 877c478bd9Sstevel@tonic-gate } 887c478bd9Sstevel@tonic-gate 897c478bd9Sstevel@tonic-gate /* 907c478bd9Sstevel@tonic-gate * Analyze one or more link-maps of a link map control list. This routine is 917c478bd9Sstevel@tonic-gate * called at startup to continue the processing of the main executable. It is 927c478bd9Sstevel@tonic-gate * also called each time a new set of objects are loaded, ie. from filters, 937c478bd9Sstevel@tonic-gate * lazy-loaded objects, or dlopen(). 947c478bd9Sstevel@tonic-gate * 957c478bd9Sstevel@tonic-gate * In each instance we traverse the link-map control list starting with the 967c478bd9Sstevel@tonic-gate * initial object. As dependencies are analyzed they are added to the link-map 977c478bd9Sstevel@tonic-gate * control list. Thus the list grows as we traverse it - this results in the 987c478bd9Sstevel@tonic-gate * breadth first ordering of all needed objects. 997c478bd9Sstevel@tonic-gate */ 1007c478bd9Sstevel@tonic-gate int 1019aa23310Srie analyze_lmc(Lm_list *lml, Aliste nlmco, Rt_map *nlmp, int *in_nfavl) 1027c478bd9Sstevel@tonic-gate { 1037c478bd9Sstevel@tonic-gate Rt_map *lmp = nlmp; 1047c478bd9Sstevel@tonic-gate Lm_cntl *nlmc; 1057c478bd9Sstevel@tonic-gate int ret = 1; 1067c478bd9Sstevel@tonic-gate 1077c478bd9Sstevel@tonic-gate /* 1087c478bd9Sstevel@tonic-gate * If this link-map control list is being analyzed, return. The object 1097c478bd9Sstevel@tonic-gate * that has just been added will be picked up by the existing analysis 1107c478bd9Sstevel@tonic-gate * thread. Note, this is only really meaningful during process init- 1117c478bd9Sstevel@tonic-gate * ialization, as objects are added to the main link-map control list. 1127c478bd9Sstevel@tonic-gate * Following this initialization, each family of objects that are loaded 1137c478bd9Sstevel@tonic-gate * are added to a new link-map control list. 1147c478bd9Sstevel@tonic-gate */ 1157c478bd9Sstevel@tonic-gate /* LINTED */ 116cce0e03bSab nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 1177c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_ANALYZING) 1187c478bd9Sstevel@tonic-gate return (1); 1197c478bd9Sstevel@tonic-gate 1207c478bd9Sstevel@tonic-gate /* 1217c478bd9Sstevel@tonic-gate * If this object doesn't belong to the present link-map control list 1227c478bd9Sstevel@tonic-gate * then it must already have been analyzed, or it is in the process of 1237c478bd9Sstevel@tonic-gate * being analyzed prior to us recursing into this analysis. In either 1247c478bd9Sstevel@tonic-gate * case, ignore the object as it's already being taken care of. 1257c478bd9Sstevel@tonic-gate */ 1267c478bd9Sstevel@tonic-gate if (nlmco != CNTL(nlmp)) 1277c478bd9Sstevel@tonic-gate return (1); 1287c478bd9Sstevel@tonic-gate 1297c478bd9Sstevel@tonic-gate nlmc->lc_flags |= LMC_FLG_ANALYZING; 1307c478bd9Sstevel@tonic-gate 1317c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 1327c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & 1337c478bd9Sstevel@tonic-gate (FLG_RT_ANALZING | FLG_RT_ANALYZED | FLG_RT_DELETE)) 1347c478bd9Sstevel@tonic-gate continue; 1357c478bd9Sstevel@tonic-gate 1367c478bd9Sstevel@tonic-gate /* 1377c478bd9Sstevel@tonic-gate * Indicate that analyzing is under way. 1387c478bd9Sstevel@tonic-gate */ 1397c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_ANALZING; 1407c478bd9Sstevel@tonic-gate 1417c478bd9Sstevel@tonic-gate /* 1427c478bd9Sstevel@tonic-gate * If this link map represents a relocatable object, then we 1437c478bd9Sstevel@tonic-gate * need to finish the link-editing of the object at this point. 1447c478bd9Sstevel@tonic-gate */ 1457c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_OBJECT) { 1469aa23310Srie if (elf_obj_fini(lml, lmp, in_nfavl) == 0) { 1477c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) 1487c478bd9Sstevel@tonic-gate continue; 1497c478bd9Sstevel@tonic-gate ret = 0; 1507c478bd9Sstevel@tonic-gate break; 1517c478bd9Sstevel@tonic-gate } 1527c478bd9Sstevel@tonic-gate } 1537c478bd9Sstevel@tonic-gate 1547c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_analyze(lmp)); 1557c478bd9Sstevel@tonic-gate 1567c478bd9Sstevel@tonic-gate /* 1577c478bd9Sstevel@tonic-gate * Establish any dependencies this object requires. 1587c478bd9Sstevel@tonic-gate */ 1599aa23310Srie if (LM_NEEDED(lmp)(lml, nlmco, lmp, in_nfavl) == 0) { 1607c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) 1617c478bd9Sstevel@tonic-gate continue; 1627c478bd9Sstevel@tonic-gate ret = 0; 1637c478bd9Sstevel@tonic-gate break; 1647c478bd9Sstevel@tonic-gate } 1657c478bd9Sstevel@tonic-gate 1667c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_ANALZING; 1677c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_ANALYZED; 1687c478bd9Sstevel@tonic-gate 1697c478bd9Sstevel@tonic-gate /* 1707c478bd9Sstevel@tonic-gate * If we're building a configuration file, determine if this 1717c478bd9Sstevel@tonic-gate * object is a filter and if so load its filtees. This 1727c478bd9Sstevel@tonic-gate * traversal is only necessary for crle(1), as typical use of 1737c478bd9Sstevel@tonic-gate * an object will load filters as part of relocation processing. 1747c478bd9Sstevel@tonic-gate */ 1757c478bd9Sstevel@tonic-gate if (MODE(nlmp) & RTLD_CONFGEN) 1769aa23310Srie load_filtees(lmp, in_nfavl); 1777c478bd9Sstevel@tonic-gate 1787c478bd9Sstevel@tonic-gate /* 1797c478bd9Sstevel@tonic-gate * If an interposer has been added, it will have been inserted 1807c478bd9Sstevel@tonic-gate * in the link-map before the link we're presently analyzing. 1817c478bd9Sstevel@tonic-gate * Break out of this analysis loop and return to the head of 1827c478bd9Sstevel@tonic-gate * the link-map control list to analyze the interposer. Note 1837c478bd9Sstevel@tonic-gate * that this rescan preserves the breadth first loading of 1847c478bd9Sstevel@tonic-gate * dependencies. 1857c478bd9Sstevel@tonic-gate */ 18624a6229eSrie /* LINTED */ 187cce0e03bSab nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 1887c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_REANALYZE) { 1897c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_REANALYZE; 1907c478bd9Sstevel@tonic-gate lmp = nlmc->lc_head; 1917c478bd9Sstevel@tonic-gate } 1927c478bd9Sstevel@tonic-gate } 1937c478bd9Sstevel@tonic-gate 19424a6229eSrie /* LINTED */ 195cce0e03bSab nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 1967c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_ANALYZING; 1977c478bd9Sstevel@tonic-gate 1987c478bd9Sstevel@tonic-gate return (ret); 1997c478bd9Sstevel@tonic-gate } 2007c478bd9Sstevel@tonic-gate 2017c478bd9Sstevel@tonic-gate /* 202466e2a62Srie * Determine whether a symbol represents zero, .bss, bits. Most commonly this 203466e2a62Srie * function is used to determine whether the data for a copy relocation refers 204466e2a62Srie * to initialized data or .bss. If the data definition is within .bss, then the 205466e2a62Srie * data is zero filled, and as the copy destination within the executable is 206466e2a62Srie * .bss, we can skip copying zero's to zero's. 207466e2a62Srie * 208466e2a62Srie * However, if the defining object has MOVE data, it's .bss might contain 209466e2a62Srie * non-zero data, in which case copy the definition regardless. 210466e2a62Srie * 211466e2a62Srie * For backward compatibility copy relocation processing, this routine can be 212466e2a62Srie * used to determine precisely if a copy destination is a move record recipient. 2137c478bd9Sstevel@tonic-gate */ 2147c478bd9Sstevel@tonic-gate static int 215466e2a62Srie are_bits_zero(Rt_map *dlmp, Sym *dsym, int dest) 2167c478bd9Sstevel@tonic-gate { 217466e2a62Srie Mmap *mmap = NULL, *mmaps; 218466e2a62Srie caddr_t daddr = (caddr_t)dsym->st_value; 2197c478bd9Sstevel@tonic-gate 220466e2a62Srie if ((FLAGS(dlmp) & FLG_RT_FIXED) == 0) 221466e2a62Srie daddr += ADDR(dlmp); 2227c478bd9Sstevel@tonic-gate 223466e2a62Srie /* 224466e2a62Srie * Determine the segment that contains the copy definition. Given that 225466e2a62Srie * the copy relocation records have already been captured and verified, 226466e2a62Srie * a segment must be found (but we add an escape clause never the less). 227466e2a62Srie */ 228466e2a62Srie for (mmaps = MMAPS(dlmp); mmaps->m_vaddr; mmaps++) { 229466e2a62Srie if ((daddr >= mmaps->m_vaddr) && 230466e2a62Srie (daddr < (mmaps->m_vaddr + mmaps->m_msize))) { 231466e2a62Srie mmap = mmaps; 232466e2a62Srie break; 2337c478bd9Sstevel@tonic-gate } 2347c478bd9Sstevel@tonic-gate } 235466e2a62Srie if (mmap == NULL) 236466e2a62Srie return (1); 237466e2a62Srie 238466e2a62Srie /* 239466e2a62Srie * If the definition is not within .bss, indicate this is not zero data. 240466e2a62Srie */ 241466e2a62Srie if (daddr < (mmap->m_vaddr + mmaps->m_fsize)) 242466e2a62Srie return (0); 243466e2a62Srie 244466e2a62Srie /* 245466e2a62Srie * If the definition is within .bss, make sure the definition isn't the 246466e2a62Srie * recipient of a move record. Note, we don't precisely analyze whether 247466e2a62Srie * the address is a move record recipient, as the infrastructure to 248466e2a62Srie * prepare for, and carry out this analysis, is probably more costly 249466e2a62Srie * than just copying the bytes regardless. 250466e2a62Srie */ 251466e2a62Srie if ((FLAGS(dlmp) & FLG_RT_MOVE) == 0) 252466e2a62Srie return (1); 253466e2a62Srie 254466e2a62Srie /* 255466e2a62Srie * However, for backward compatibility copy relocation processing, we 256466e2a62Srie * can afford to work a little harder. Here, determine precisely 257466e2a62Srie * whether the destination in the executable is a move record recipient. 258466e2a62Srie * See comments in lookup_sym_interpose(), below. 259466e2a62Srie */ 260466e2a62Srie if (dest && is_move_data(daddr)) 261466e2a62Srie return (0); 262466e2a62Srie 263466e2a62Srie return (1); 2647c478bd9Sstevel@tonic-gate } 2657c478bd9Sstevel@tonic-gate 2667c478bd9Sstevel@tonic-gate /* 2677c478bd9Sstevel@tonic-gate * Relocate an individual object. 2687c478bd9Sstevel@tonic-gate */ 2697c478bd9Sstevel@tonic-gate static int 2709aa23310Srie relocate_so(Lm_list *lml, Rt_map *lmp, int *relocated, int now, int *in_nfavl) 2717c478bd9Sstevel@tonic-gate { 2727c478bd9Sstevel@tonic-gate /* 2737c478bd9Sstevel@tonic-gate * If we're running under ldd(1), and haven't been asked to trace any 2747c478bd9Sstevel@tonic-gate * warnings, skip any actual relocation processing. 2757c478bd9Sstevel@tonic-gate */ 2767c478bd9Sstevel@tonic-gate if (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 2777c478bd9Sstevel@tonic-gate (lml->lm_flags & LML_FLG_TRC_WARN)) { 2787c478bd9Sstevel@tonic-gate 2797c478bd9Sstevel@tonic-gate if (relocated) 2807c478bd9Sstevel@tonic-gate (*relocated)++; 2817c478bd9Sstevel@tonic-gate 2829aa23310Srie if ((LM_RELOC(lmp)(lmp, now, in_nfavl) == 0) && 2837c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0)) 2847c478bd9Sstevel@tonic-gate return (0); 2857c478bd9Sstevel@tonic-gate } 2867c478bd9Sstevel@tonic-gate return (1); 2877c478bd9Sstevel@tonic-gate } 2887c478bd9Sstevel@tonic-gate 2897c478bd9Sstevel@tonic-gate /* 2907c478bd9Sstevel@tonic-gate * Relocate the objects on a link-map control list. 2917c478bd9Sstevel@tonic-gate */ 2927c478bd9Sstevel@tonic-gate static int 2939aa23310Srie _relocate_lmc(Lm_list *lml, Rt_map *nlmp, int *relocated, int *in_nfavl) 2947c478bd9Sstevel@tonic-gate { 2957c478bd9Sstevel@tonic-gate Rt_map *lmp; 2967c478bd9Sstevel@tonic-gate 2977c478bd9Sstevel@tonic-gate for (lmp = nlmp; lmp; lmp = (Rt_map *)NEXT(lmp)) { 2987c478bd9Sstevel@tonic-gate /* 2997c478bd9Sstevel@tonic-gate * If this object has already been relocated, we're done. If 3007c478bd9Sstevel@tonic-gate * this object is being deleted, skip it, there's probably a 3017c478bd9Sstevel@tonic-gate * relocation error somewhere that's causing this deletion. 3027c478bd9Sstevel@tonic-gate */ 3037c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & 3047c478bd9Sstevel@tonic-gate (FLG_RT_RELOCING | FLG_RT_RELOCED | FLG_RT_DELETE)) 3057c478bd9Sstevel@tonic-gate continue; 3067c478bd9Sstevel@tonic-gate 3077c478bd9Sstevel@tonic-gate /* 3087c478bd9Sstevel@tonic-gate * Indicate that relocation processing is under way. 3097c478bd9Sstevel@tonic-gate */ 3107c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_RELOCING; 3117c478bd9Sstevel@tonic-gate 3127c478bd9Sstevel@tonic-gate /* 3137c478bd9Sstevel@tonic-gate * Relocate the object. 3147c478bd9Sstevel@tonic-gate */ 3159aa23310Srie if (relocate_so(lml, lmp, relocated, 0, in_nfavl) == 0) 3167c478bd9Sstevel@tonic-gate return (0); 3177c478bd9Sstevel@tonic-gate 3187c478bd9Sstevel@tonic-gate /* 3197c478bd9Sstevel@tonic-gate * Indicate that the objects relocation is complete. 3207c478bd9Sstevel@tonic-gate */ 3217c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_RELOCING; 3227c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_RELOCED; 3237c478bd9Sstevel@tonic-gate 3247c478bd9Sstevel@tonic-gate /* 3257c478bd9Sstevel@tonic-gate * Mark this object's init is available for harvesting. Under 3267c478bd9Sstevel@tonic-gate * ldd(1) this marking is necessary for -i (tsort) gathering. 3277c478bd9Sstevel@tonic-gate */ 3287c478bd9Sstevel@tonic-gate lml->lm_init++; 329dffec89cSrie lml->lm_flags |= LML_FLG_OBJADDED; 3307c478bd9Sstevel@tonic-gate 3317c478bd9Sstevel@tonic-gate /* 332466e2a62Srie * Process any move data. Note, this is carried out under ldd 333466e2a62Srie * under relocation processing too, as it can flush out move 334466e2a62Srie * errors, and enables lari(1) to provide a true representation 335466e2a62Srie * of the runtime bindings. 3367c478bd9Sstevel@tonic-gate */ 33710a4fa49Srie if ((FLAGS(lmp) & FLG_RT_MOVE) && 338466e2a62Srie (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 339466e2a62Srie (lml->lm_flags & LML_FLG_TRC_WARN))) { 340466e2a62Srie if (move_data(lmp) == 0) 341466e2a62Srie return (0); 342466e2a62Srie } 3437c478bd9Sstevel@tonic-gate 3447c478bd9Sstevel@tonic-gate /* 3457c478bd9Sstevel@tonic-gate * Determine if this object is a filter, and if a load filter 3467c478bd9Sstevel@tonic-gate * flag is in effect, trigger the loading of all its filtees. 3477c478bd9Sstevel@tonic-gate */ 3489aa23310Srie load_filtees(lmp, in_nfavl); 3497c478bd9Sstevel@tonic-gate } 3507c478bd9Sstevel@tonic-gate 3517c478bd9Sstevel@tonic-gate /* 3527c478bd9Sstevel@tonic-gate * Perform special copy relocations. These are only meaningful for 3537c478bd9Sstevel@tonic-gate * dynamic executables (fixed and head of their link-map list). If 3547c478bd9Sstevel@tonic-gate * this ever has to change then the infrastructure of COPY() has to 355cce0e03bSab * change. Presently, a given link map can only have a receiver or 356cce0e03bSab * supplier of copy data, so a union is used to overlap the storage 357cce0e03bSab * for the COPY_R() and COPY_S() lists. These lists would need to 358cce0e03bSab * be separated. 3597c478bd9Sstevel@tonic-gate */ 3607c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_FIXED) && (nlmp == LIST(nlmp)->lm_head) && 3617c478bd9Sstevel@tonic-gate (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 3627c478bd9Sstevel@tonic-gate (lml->lm_flags & LML_FLG_TRC_WARN))) { 363cce0e03bSab Rt_map *lmp; 364cce0e03bSab Aliste idx1; 3657c478bd9Sstevel@tonic-gate Word tracing; 3667c478bd9Sstevel@tonic-gate 36702ca3e02Srie #if defined(__i386) 3687c478bd9Sstevel@tonic-gate if (elf_copy_gen(nlmp) == 0) 3697c478bd9Sstevel@tonic-gate return (0); 3707c478bd9Sstevel@tonic-gate #endif 371cce0e03bSab if (COPY_S(nlmp) == NULL) 3727c478bd9Sstevel@tonic-gate return (1); 3737c478bd9Sstevel@tonic-gate 3747c478bd9Sstevel@tonic-gate if ((LIST(nlmp)->lm_flags & LML_FLG_TRC_ENABLE) && 3757c478bd9Sstevel@tonic-gate (((rtld_flags & RT_FL_SILENCERR) == 0) || 3767c478bd9Sstevel@tonic-gate (LIST(nlmp)->lm_flags & LML_FLG_TRC_VERBOSE))) 3777c478bd9Sstevel@tonic-gate tracing = 1; 3787c478bd9Sstevel@tonic-gate else 3797c478bd9Sstevel@tonic-gate tracing = 0; 3807c478bd9Sstevel@tonic-gate 3815aefb655Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 3827c478bd9Sstevel@tonic-gate 383cce0e03bSab for (APLIST_TRAVERSE(COPY_S(nlmp), idx1, lmp)) { 384aa736cbeSrie Rel_copy *rcp; 385cce0e03bSab Aliste idx2; 3867c478bd9Sstevel@tonic-gate 387cce0e03bSab for (ALIST_TRAVERSE(COPY_R(lmp), idx2, rcp)) { 3887c478bd9Sstevel@tonic-gate int zero; 3897c478bd9Sstevel@tonic-gate 3907c478bd9Sstevel@tonic-gate /* 391466e2a62Srie * Only copy the data if the data is from 392466e2a62Srie * a non-zero definition (ie. not .bss). 3937c478bd9Sstevel@tonic-gate */ 394466e2a62Srie zero = are_bits_zero(rcp->r_dlmp, 395466e2a62Srie rcp->r_dsym, 0); 3965aefb655Srie DBG_CALL(Dbg_reloc_copy(rcp->r_dlmp, nlmp, 3975aefb655Srie rcp->r_name, zero)); 3987c478bd9Sstevel@tonic-gate if (zero) 3997c478bd9Sstevel@tonic-gate continue; 4007c478bd9Sstevel@tonic-gate 4017c478bd9Sstevel@tonic-gate (void) memcpy(rcp->r_radd, rcp->r_dadd, 4027c478bd9Sstevel@tonic-gate rcp->r_size); 4037c478bd9Sstevel@tonic-gate 4047c478bd9Sstevel@tonic-gate if ((tracing == 0) || ((FLAGS1(rcp->r_dlmp) & 4057c478bd9Sstevel@tonic-gate FL1_RT_DISPREL) == 0)) 4067c478bd9Sstevel@tonic-gate continue; 4077c478bd9Sstevel@tonic-gate 4087c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_REL_CPYDISP), 4097c478bd9Sstevel@tonic-gate demangle(rcp->r_name), NAME(rcp->r_dlmp)); 4107c478bd9Sstevel@tonic-gate } 4117c478bd9Sstevel@tonic-gate } 4127c478bd9Sstevel@tonic-gate 4135aefb655Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 4147c478bd9Sstevel@tonic-gate 415cce0e03bSab free(COPY_S(nlmp)); 416cce0e03bSab COPY_S(nlmp) = 0; 4177c478bd9Sstevel@tonic-gate } 4187c478bd9Sstevel@tonic-gate return (1); 4197c478bd9Sstevel@tonic-gate } 4207c478bd9Sstevel@tonic-gate 4217c478bd9Sstevel@tonic-gate int 4229aa23310Srie relocate_lmc(Lm_list *lml, Aliste nlmco, Rt_map *clmp, Rt_map *nlmp, 4239aa23310Srie int *in_nfavl) 4247c478bd9Sstevel@tonic-gate { 4257c478bd9Sstevel@tonic-gate int lret = 1, pret = 1; 426cce0e03bSab APlist *alp; 4277c478bd9Sstevel@tonic-gate Aliste plmco; 4287c478bd9Sstevel@tonic-gate Lm_cntl *plmc, *nlmc; 4297c478bd9Sstevel@tonic-gate 4307c478bd9Sstevel@tonic-gate /* 4317c478bd9Sstevel@tonic-gate * If this link-map control list is being relocated, return. The object 4327c478bd9Sstevel@tonic-gate * that has just been added will be picked up by the existing relocation 4337c478bd9Sstevel@tonic-gate * thread. Note, this is only really meaningful during process init- 4347c478bd9Sstevel@tonic-gate * ialization, as objects are added to the main link-map control list. 4357c478bd9Sstevel@tonic-gate * Following this initialization, each family of objects that are loaded 4367c478bd9Sstevel@tonic-gate * are added to a new link-map control list. 4377c478bd9Sstevel@tonic-gate */ 4387c478bd9Sstevel@tonic-gate /* LINTED */ 439cce0e03bSab nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 4407c478bd9Sstevel@tonic-gate 4417c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_RELOCATING) 4427c478bd9Sstevel@tonic-gate return (1); 4437c478bd9Sstevel@tonic-gate 4447c478bd9Sstevel@tonic-gate nlmc->lc_flags |= LMC_FLG_RELOCATING; 4457c478bd9Sstevel@tonic-gate 4467c478bd9Sstevel@tonic-gate /* 4477c478bd9Sstevel@tonic-gate * Relocate one or more link-maps of a link map control list. If this 4487c478bd9Sstevel@tonic-gate * object doesn't belong to the present link-map control list then it 4497c478bd9Sstevel@tonic-gate * must already have been relocated, or it is in the process of being 4507c478bd9Sstevel@tonic-gate * relocated prior to us recursing into this relocation. In either 4517c478bd9Sstevel@tonic-gate * case, ignore the object as it's already being taken care of, however, 4527c478bd9Sstevel@tonic-gate * fall through and capture any relocation promotions that might have 4537c478bd9Sstevel@tonic-gate * been established from the reference mode of this object. 4547c478bd9Sstevel@tonic-gate * 4557c478bd9Sstevel@tonic-gate * If we're generating a configuration file using crle(1), two passes 4567c478bd9Sstevel@tonic-gate * may be involved. Under the first pass, RTLD_CONFGEN is set. Under 4577c478bd9Sstevel@tonic-gate * this pass, crle() loads objects into the process address space. No 4587c478bd9Sstevel@tonic-gate * relocation is necessary at this point, we simply need to analyze the 4597c478bd9Sstevel@tonic-gate * objects to insure any directly bound dependencies, filtees, etc. 4607c478bd9Sstevel@tonic-gate * get loaded. Although we skip the relocation, fall through to insure 4617c478bd9Sstevel@tonic-gate * any control lists are maintained appropriately. 4627c478bd9Sstevel@tonic-gate * 4637c478bd9Sstevel@tonic-gate * If objects are to be dldump(3c)'ed, crle(1) makes a second pass, 4647c478bd9Sstevel@tonic-gate * using RTLD_NOW and RTLD_CONFGEN. The RTLD_NOW effectively carries 4657c478bd9Sstevel@tonic-gate * out the relocations of all loaded objects. 4667c478bd9Sstevel@tonic-gate */ 4677c478bd9Sstevel@tonic-gate if ((nlmco == CNTL(nlmp)) && 4687c478bd9Sstevel@tonic-gate ((MODE(nlmp) & (RTLD_NOW | RTLD_CONFGEN)) != RTLD_CONFGEN)) { 4697c478bd9Sstevel@tonic-gate int relocated = 0; 4707c478bd9Sstevel@tonic-gate 4717c478bd9Sstevel@tonic-gate /* 4727c478bd9Sstevel@tonic-gate * Determine whether the initial link-map control list has 4737c478bd9Sstevel@tonic-gate * started relocation. From this point, should any interposing 4747c478bd9Sstevel@tonic-gate * objects be added to this link-map control list, the objects 4757c478bd9Sstevel@tonic-gate * are demoted to standard objects. Their interposition can't 4767c478bd9Sstevel@tonic-gate * be guaranteed once relocations have been carried out. 4777c478bd9Sstevel@tonic-gate */ 478cce0e03bSab if (nlmco == ALIST_OFF_DATA) 4797c478bd9Sstevel@tonic-gate lml->lm_flags |= LML_FLG_STARTREL; 4807c478bd9Sstevel@tonic-gate 4817c478bd9Sstevel@tonic-gate /* 48202ca3e02Srie * Relocate the link-map control list. Should this relocation 48302ca3e02Srie * fail, clean up this link-map list. Relocations within this 48402ca3e02Srie * list may have required relocation promotions on other lists, 48502ca3e02Srie * so before acting upon these, and possibly adding more objects 48602ca3e02Srie * to the present link-map control list, try and clean up any 48702ca3e02Srie * failed objects now. 4887c478bd9Sstevel@tonic-gate */ 4899aa23310Srie lret = _relocate_lmc(lml, nlmp, &relocated, in_nfavl); 490cce0e03bSab if ((lret == 0) && (nlmco != ALIST_OFF_DATA)) 49102ca3e02Srie remove_lmc(lml, clmp, nlmc, nlmco, NAME(nlmp)); 4927c478bd9Sstevel@tonic-gate } 4937c478bd9Sstevel@tonic-gate 4947c478bd9Sstevel@tonic-gate /* 4957c478bd9Sstevel@tonic-gate * Determine the new, and previous link-map control lists. 4967c478bd9Sstevel@tonic-gate */ 49724a6229eSrie /* LINTED */ 498cce0e03bSab nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 499cce0e03bSab if (nlmco == ALIST_OFF_DATA) { 5006679fdc0Srie plmco = nlmco; 5017c478bd9Sstevel@tonic-gate plmc = nlmc; 5026679fdc0Srie } else { 5037c478bd9Sstevel@tonic-gate plmco = nlmco - lml->lm_lists->al_size; 5047c478bd9Sstevel@tonic-gate /* LINTED */ 505cce0e03bSab plmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, plmco); 5067c478bd9Sstevel@tonic-gate } 5077c478bd9Sstevel@tonic-gate 5087c478bd9Sstevel@tonic-gate /* 5097c478bd9Sstevel@tonic-gate * Having completed this control list of objects, they can now be bound 5107c478bd9Sstevel@tonic-gate * to from other objects. Move this control list to the control list 5117c478bd9Sstevel@tonic-gate * that precedes it. Although this control list may have only bound to 5127c478bd9Sstevel@tonic-gate * controls lists much higher up the control list stack, it must only 5137c478bd9Sstevel@tonic-gate * be moved up one control list so as to preserve the link-map order 5147c478bd9Sstevel@tonic-gate * that may have already been traversed in search of symbols. 5157c478bd9Sstevel@tonic-gate */ 516cce0e03bSab if (lret && (nlmco != ALIST_OFF_DATA) && nlmc->lc_head) 5177c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 5187c478bd9Sstevel@tonic-gate 5197c478bd9Sstevel@tonic-gate /* 5207c478bd9Sstevel@tonic-gate * Determine whether existing objects that have already been relocated, 5217c478bd9Sstevel@tonic-gate * need any additional relocations performed. This can occur when new 5227c478bd9Sstevel@tonic-gate * objects are loaded with RTLD_NOW, and these new objects have 5237c478bd9Sstevel@tonic-gate * dependencies on objects that are already loaded. Note, that we peel 5247c478bd9Sstevel@tonic-gate * any relocation promotions off of one control list at a time. This 5257c478bd9Sstevel@tonic-gate * prevents relocations from being bound to objects that might yet fail 5267c478bd9Sstevel@tonic-gate * to relocate themselves. 5277c478bd9Sstevel@tonic-gate */ 528cce0e03bSab while ((alp = plmc->lc_now) != NULL) { 529cce0e03bSab Aliste idx; 530cce0e03bSab Rt_map *lmp; 5317c478bd9Sstevel@tonic-gate 5327c478bd9Sstevel@tonic-gate /* 5337c478bd9Sstevel@tonic-gate * Remove the relocation promotion list, as performing more 5347c478bd9Sstevel@tonic-gate * relocations may result in discovering more objects that need 5357c478bd9Sstevel@tonic-gate * promotion. 5367c478bd9Sstevel@tonic-gate */ 537cce0e03bSab plmc->lc_now = NULL; 5387c478bd9Sstevel@tonic-gate 539cce0e03bSab for (APLIST_TRAVERSE(alp, idx, lmp)) { 5407c478bd9Sstevel@tonic-gate /* 5417c478bd9Sstevel@tonic-gate * If the original relocation of the link-map control 5427c478bd9Sstevel@tonic-gate * list failed, or one of the relocation promotions of 5437c478bd9Sstevel@tonic-gate * this loop has failed, demote any pending objects 5447c478bd9Sstevel@tonic-gate * relocation mode. 5457c478bd9Sstevel@tonic-gate */ 5467c478bd9Sstevel@tonic-gate if ((lret == 0) || (pret == 0)) { 5477c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_NOW; 5487c478bd9Sstevel@tonic-gate MODE(lmp) |= RTLD_LAZY; 5497c478bd9Sstevel@tonic-gate continue; 5507c478bd9Sstevel@tonic-gate } 5517c478bd9Sstevel@tonic-gate 5527c478bd9Sstevel@tonic-gate /* 5537c478bd9Sstevel@tonic-gate * If a relocation fails, save the error condition. 5547c478bd9Sstevel@tonic-gate * It's possible that all new objects on the original 5557c478bd9Sstevel@tonic-gate * link-map control list have been relocated 5567c478bd9Sstevel@tonic-gate * successfully, but if the user request requires 5577c478bd9Sstevel@tonic-gate * promoting objects that have already been loaded, we 5587c478bd9Sstevel@tonic-gate * have to indicate that this operation couldn't be 5597c478bd9Sstevel@tonic-gate * performed. The unrelocated objects are in use on 5607c478bd9Sstevel@tonic-gate * another control list, and may continue to be used. 5617c478bd9Sstevel@tonic-gate * If the .plt that resulted in the error is called, 5627c478bd9Sstevel@tonic-gate * then the process will receive a fatal error at that 5637c478bd9Sstevel@tonic-gate * time. But, the .plt may never be called. 5647c478bd9Sstevel@tonic-gate */ 5659aa23310Srie if (relocate_so(lml, lmp, 0, 1, in_nfavl) == 0) 5667c478bd9Sstevel@tonic-gate pret = 0; 5677c478bd9Sstevel@tonic-gate } 5687c478bd9Sstevel@tonic-gate 5697c478bd9Sstevel@tonic-gate /* 5707c478bd9Sstevel@tonic-gate * Having promoted any objects, determine whether additional 5717c478bd9Sstevel@tonic-gate * dependencies were added, and if so move them to the previous 5727c478bd9Sstevel@tonic-gate * link-map control list. 5737c478bd9Sstevel@tonic-gate */ 57424a6229eSrie /* LINTED */ 575cce0e03bSab nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 57624a6229eSrie /* LINTED */ 577cce0e03bSab plmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, plmco); 578cce0e03bSab if ((nlmco != ALIST_OFF_DATA) && nlmc->lc_head) 5797c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 5808521e5e6Srie free(alp); 5817c478bd9Sstevel@tonic-gate } 5827c478bd9Sstevel@tonic-gate 58324a6229eSrie /* 58402ca3e02Srie * If relocations have been successful, indicate that relocations are 58502ca3e02Srie * no longer active for this control list. Otherwise, leave the 58602ca3e02Srie * relocation flag, as this flag is used to determine the style of 58702ca3e02Srie * cleanup (see remove_lmc()). 58824a6229eSrie */ 58902ca3e02Srie if (lret && pret) { 59002ca3e02Srie /* LINTED */ 591cce0e03bSab nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 59202ca3e02Srie nlmc->lc_flags &= ~LMC_FLG_RELOCATING; 5937c478bd9Sstevel@tonic-gate 5947c478bd9Sstevel@tonic-gate return (1); 59502ca3e02Srie } 59602ca3e02Srie 59702ca3e02Srie return (0); 5987c478bd9Sstevel@tonic-gate } 5997c478bd9Sstevel@tonic-gate 6007c478bd9Sstevel@tonic-gate /* 6017c478bd9Sstevel@tonic-gate * Inherit the first rejection message for possible later diagnostics. 6027c478bd9Sstevel@tonic-gate * 6037c478bd9Sstevel@tonic-gate * Any attempt to process a file that is unsuccessful, should be accompanied 6047c478bd9Sstevel@tonic-gate * with an error diagnostic. However, some operations like searching for a 6057c478bd9Sstevel@tonic-gate * simple filename, involve trying numerous paths, and an error message for each 6067c478bd9Sstevel@tonic-gate * lookup is not required. Although a multiple search can fail, it's possible 6077c478bd9Sstevel@tonic-gate * that a file was found, but was rejected because it was the wrong type. 6087c478bd9Sstevel@tonic-gate * To satisfy these possibilities, the first failure is recorded as a rejection 6097c478bd9Sstevel@tonic-gate * message, and this message is used later for a more specific diagnostic. 6107c478bd9Sstevel@tonic-gate * 6117c478bd9Sstevel@tonic-gate * File searches are focused at load_one(), and from here a rejection descriptor 6127c478bd9Sstevel@tonic-gate * is passed down to various child routines. If these child routines can 6137c478bd9Sstevel@tonic-gate * process multiple files, then they will maintain their own rejection desc- 6147c478bd9Sstevel@tonic-gate * riptor. This is filled in for any failures, and a diagnostic produced to 6157c478bd9Sstevel@tonic-gate * reflect the failure. The child routines then employ rejection_inherit() to 6167c478bd9Sstevel@tonic-gate * pass the first rejection message back to load_one(). 6177c478bd9Sstevel@tonic-gate * 6187c478bd9Sstevel@tonic-gate * Note that the name, and rejection string must be duplicated, as the name 6197c478bd9Sstevel@tonic-gate * buffer and error string buffer (see conv_ routines) may be reused for 6207c478bd9Sstevel@tonic-gate * additional processing or rejection messages. 6217c478bd9Sstevel@tonic-gate */ 6227c478bd9Sstevel@tonic-gate void 62331fdd7caSab rejection_inherit(Rej_desc *rej1, Rej_desc *rej2) 6247c478bd9Sstevel@tonic-gate { 6257c478bd9Sstevel@tonic-gate if (rej2->rej_type && (rej1->rej_type == 0)) { 6267c478bd9Sstevel@tonic-gate rej1->rej_type = rej2->rej_type; 6277c478bd9Sstevel@tonic-gate rej1->rej_info = rej2->rej_info; 6287c478bd9Sstevel@tonic-gate rej1->rej_flag = rej2->rej_flag; 6297c478bd9Sstevel@tonic-gate if (rej2->rej_name) 6307c478bd9Sstevel@tonic-gate rej1->rej_name = strdup(rej2->rej_name); 6317c478bd9Sstevel@tonic-gate if (rej2->rej_str) { 6328521e5e6Srie if ((rej1->rej_str = strdup(rej2->rej_str)) == NULL) 6337c478bd9Sstevel@tonic-gate rej1->rej_str = MSG_ORIG(MSG_EMG_ENOMEM); 6347c478bd9Sstevel@tonic-gate } 6357c478bd9Sstevel@tonic-gate } 6367c478bd9Sstevel@tonic-gate } 6377c478bd9Sstevel@tonic-gate 6387c478bd9Sstevel@tonic-gate /* 6397c478bd9Sstevel@tonic-gate * Determine the object type of a file. 6407c478bd9Sstevel@tonic-gate */ 6417c478bd9Sstevel@tonic-gate Fct * 6427c478bd9Sstevel@tonic-gate are_u_this(Rej_desc *rej, int fd, struct stat *status, const char *name) 6437c478bd9Sstevel@tonic-gate { 6447c478bd9Sstevel@tonic-gate int i; 6457c478bd9Sstevel@tonic-gate char *maddr = 0; 6467c478bd9Sstevel@tonic-gate 6477c478bd9Sstevel@tonic-gate fmap->fm_fsize = status->st_size; 6487c478bd9Sstevel@tonic-gate 6497c478bd9Sstevel@tonic-gate /* 6507c478bd9Sstevel@tonic-gate * If this is a directory (which can't be mmap()'ed) generate a precise 6517c478bd9Sstevel@tonic-gate * error message. 6527c478bd9Sstevel@tonic-gate */ 6537c478bd9Sstevel@tonic-gate if ((status->st_mode & S_IFMT) == S_IFDIR) { 6547c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 6557c478bd9Sstevel@tonic-gate rej->rej_str = strerror(EISDIR); 6567c478bd9Sstevel@tonic-gate return (0); 6577c478bd9Sstevel@tonic-gate } 6587c478bd9Sstevel@tonic-gate 6597c478bd9Sstevel@tonic-gate /* 6607c478bd9Sstevel@tonic-gate * Map in the first page of the file. When this buffer is first used, 6617c478bd9Sstevel@tonic-gate * the mapping is a single system page. This is typically enough to 6627c478bd9Sstevel@tonic-gate * inspect the ehdr and phdrs of the file, and can be reused for each 6637c478bd9Sstevel@tonic-gate * file that get loaded. If a larger mapping is required to read the 6647c478bd9Sstevel@tonic-gate * ehdr and phdrs, a new mapping is created (see elf_map_it()). This 6657c478bd9Sstevel@tonic-gate * new mapping is again used for each new file loaded. Some objects, 6667c478bd9Sstevel@tonic-gate * such as filters, only take up one page, and in this case this mapping 6677c478bd9Sstevel@tonic-gate * will suffice for the file. 6687c478bd9Sstevel@tonic-gate */ 6697c478bd9Sstevel@tonic-gate maddr = mmap(fmap->fm_maddr, fmap->fm_msize, (PROT_READ | PROT_EXEC), 6707c478bd9Sstevel@tonic-gate fmap->fm_mflags, fd, 0); 6717c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 6727c478bd9Sstevel@tonic-gate if ((maddr == MAP_FAILED) && (errno == EINVAL)) { 6737c478bd9Sstevel@tonic-gate /* 6747c478bd9Sstevel@tonic-gate * If the mapping failed, and we used MAP_ALIGN, assume we're 6757c478bd9Sstevel@tonic-gate * on a system that doesn't support this option. Try again 6767c478bd9Sstevel@tonic-gate * without MAP_ALIGN. 6777c478bd9Sstevel@tonic-gate */ 6787c478bd9Sstevel@tonic-gate if (fmap->fm_mflags & MAP_ALIGN) { 6797c478bd9Sstevel@tonic-gate rtld_flags2 |= RT_FL2_NOMALIGN; 6807c478bd9Sstevel@tonic-gate fmap_setup(); 6817c478bd9Sstevel@tonic-gate 6827c478bd9Sstevel@tonic-gate maddr = (char *)mmap(fmap->fm_maddr, fmap->fm_msize, 6837c478bd9Sstevel@tonic-gate (PROT_READ | PROT_EXEC), fmap->fm_mflags, fd, 0); 6847c478bd9Sstevel@tonic-gate } 6857c478bd9Sstevel@tonic-gate } 6867c478bd9Sstevel@tonic-gate #endif 6877c478bd9Sstevel@tonic-gate if (maddr == MAP_FAILED) { 6887c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 6897c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 6907c478bd9Sstevel@tonic-gate return (0); 6917c478bd9Sstevel@tonic-gate } 6927c478bd9Sstevel@tonic-gate 6937c478bd9Sstevel@tonic-gate /* 6947c478bd9Sstevel@tonic-gate * From now on we will re-use fmap->fm_maddr as the mapping address 6957c478bd9Sstevel@tonic-gate * so we augment the flags with MAP_FIXED and drop any MAP_ALIGN. 6967c478bd9Sstevel@tonic-gate */ 6977c478bd9Sstevel@tonic-gate fmap->fm_maddr = maddr; 6987c478bd9Sstevel@tonic-gate fmap->fm_mflags |= MAP_FIXED; 6997c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 7007c478bd9Sstevel@tonic-gate fmap->fm_mflags &= ~MAP_ALIGN; 7017c478bd9Sstevel@tonic-gate #endif 7027c478bd9Sstevel@tonic-gate 7037c478bd9Sstevel@tonic-gate /* 7047c478bd9Sstevel@tonic-gate * Search through the object vectors to determine what kind of 7057c478bd9Sstevel@tonic-gate * object we have. 7067c478bd9Sstevel@tonic-gate */ 7077c478bd9Sstevel@tonic-gate for (i = 0; vector[i]; i++) { 7087c478bd9Sstevel@tonic-gate if ((vector[i]->fct_are_u_this)(rej)) 7097c478bd9Sstevel@tonic-gate return (vector[i]); 7107c478bd9Sstevel@tonic-gate else if (rej->rej_type) { 7117c478bd9Sstevel@tonic-gate Rt_map *lmp; 7127c478bd9Sstevel@tonic-gate 7137c478bd9Sstevel@tonic-gate /* 7147c478bd9Sstevel@tonic-gate * If this object is an explicitly defined shared 7157c478bd9Sstevel@tonic-gate * object under inspection by ldd, and contains a 7167c478bd9Sstevel@tonic-gate * incompatible hardware capabilities requirement, then 7177c478bd9Sstevel@tonic-gate * inform the user, but continue processing. 7187c478bd9Sstevel@tonic-gate * 7197c478bd9Sstevel@tonic-gate * XXXX - ldd -v for any rej failure. 7207c478bd9Sstevel@tonic-gate */ 7217c478bd9Sstevel@tonic-gate if ((rej->rej_type == SGS_REJ_HWCAP_1) && 7227c478bd9Sstevel@tonic-gate (lml_main.lm_flags & LML_FLG_TRC_LDDSTUB) && 7237c478bd9Sstevel@tonic-gate ((lmp = lml_main.lm_head) != 0) && 7247c478bd9Sstevel@tonic-gate (FLAGS1(lmp) & FL1_RT_LDDSTUB) && 7257c478bd9Sstevel@tonic-gate (NEXT(lmp) == 0)) { 7267c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_GEN_HWCAP_1), 7277c478bd9Sstevel@tonic-gate name, rej->rej_str); 7287c478bd9Sstevel@tonic-gate return (vector[i]); 7297c478bd9Sstevel@tonic-gate } 7307c478bd9Sstevel@tonic-gate return (0); 7317c478bd9Sstevel@tonic-gate } 7327c478bd9Sstevel@tonic-gate } 7337c478bd9Sstevel@tonic-gate 7347c478bd9Sstevel@tonic-gate /* 7357c478bd9Sstevel@tonic-gate * Unknown file type. 7367c478bd9Sstevel@tonic-gate */ 7377c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_UNKFILE; 7387c478bd9Sstevel@tonic-gate return (0); 7397c478bd9Sstevel@tonic-gate } 7407c478bd9Sstevel@tonic-gate 7417c478bd9Sstevel@tonic-gate /* 7420aa3cd4dSrie * Helper routine for is_so_matched() that consolidates matching a path name, 7430aa3cd4dSrie * or file name component of a link-map name. 7447c478bd9Sstevel@tonic-gate */ 7457c478bd9Sstevel@tonic-gate static int 7460aa3cd4dSrie _is_so_matched(const char *name, const char *str, int path) 7477c478bd9Sstevel@tonic-gate { 7487c478bd9Sstevel@tonic-gate const char *_str; 7497c478bd9Sstevel@tonic-gate 7500aa3cd4dSrie if ((path == 0) && ((_str = strrchr(str, '/')) != NULL)) 7517c478bd9Sstevel@tonic-gate _str++; 7527c478bd9Sstevel@tonic-gate else 7537c478bd9Sstevel@tonic-gate _str = str; 7547c478bd9Sstevel@tonic-gate 7557c478bd9Sstevel@tonic-gate return (strcmp(name, _str)); 7567c478bd9Sstevel@tonic-gate } 7577c478bd9Sstevel@tonic-gate 7580aa3cd4dSrie /* 7590aa3cd4dSrie * Determine whether a search name matches one of the names associated with a 7600aa3cd4dSrie * link-map. A link-map contains several names: 7610aa3cd4dSrie * 7620aa3cd4dSrie * . a NAME() - typically the full pathname of an object that has been 7630aa3cd4dSrie * loaded. For example, when looking for the dependency "libc.so.1", a 764aa736cbeSrie * search path is applied, with the eventual NAME() being "/lib/ld.so.1". 7650aa3cd4dSrie * The name of the executable is typically a simple filename, such as 7660aa3cd4dSrie * "main", as this is the name passed to exec() to start the process. 7670aa3cd4dSrie * 7680aa3cd4dSrie * . a PATHNAME() - this is maintained if the resolved NAME() is different 7690aa3cd4dSrie * to NAME(), ie. the original name is a symbolic link. This is also 7700aa3cd4dSrie * the resolved full pathname for a dynamic executable. 7710aa3cd4dSrie * 7720aa3cd4dSrie * . a list of ALIAS() names - these are alternative names by which the 7730aa3cd4dSrie * object has been found, ie. when dependencies are loaded through a 7740aa3cd4dSrie * variety of different symbolic links. 7750aa3cd4dSrie * 7760aa3cd4dSrie * The name pattern matching can differ depending on whether we are looking 7770aa3cd4dSrie * for a full path name (path != 0), or a simple file name (path == 0). Full 7780aa3cd4dSrie * path names typically match NAME() or PATHNAME() entries, so these link-map 7790aa3cd4dSrie * names are inspected first when a full path name is being searched for. 7800aa3cd4dSrie * Simple file names typically match ALIAS() names, so these link-map names are 7810aa3cd4dSrie * inspected first when a simple file name is being searched for. 7820aa3cd4dSrie * 7830aa3cd4dSrie * For all full path name searches, the link-map names are taken as is. For 7840aa3cd4dSrie * simple file name searches, only the file name component of any link-map 7850aa3cd4dSrie * names are used for comparison. 7860aa3cd4dSrie */ 7877c478bd9Sstevel@tonic-gate static Rt_map * 7880aa3cd4dSrie is_so_matched(Rt_map *lmp, const char *name, int path) 7897c478bd9Sstevel@tonic-gate { 790cce0e03bSab Aliste idx; 791cce0e03bSab const char *cp; 7927c478bd9Sstevel@tonic-gate 7930aa3cd4dSrie /* 7940aa3cd4dSrie * A pathname is typically going to match a NAME() or PATHNAME(), so 7950aa3cd4dSrie * check these first. 7960aa3cd4dSrie */ 7970aa3cd4dSrie if (path) { 7980aa3cd4dSrie if (strcmp(name, NAME(lmp)) == 0) 7990aa3cd4dSrie return (lmp); 8000aa3cd4dSrie 8010aa3cd4dSrie if (PATHNAME(lmp) != NAME(lmp)) { 8020aa3cd4dSrie if (strcmp(name, PATHNAME(lmp)) == 0) 8030aa3cd4dSrie return (lmp); 8040aa3cd4dSrie } 8050aa3cd4dSrie } 8060aa3cd4dSrie 8077c478bd9Sstevel@tonic-gate /* 8087c478bd9Sstevel@tonic-gate * Typically, dependencies are specified as simple file names 8097c478bd9Sstevel@tonic-gate * (DT_NEEDED == libc.so.1), which are expanded to full pathnames to 8107c478bd9Sstevel@tonic-gate * open the file. The full pathname is NAME(), and the original name 8110aa3cd4dSrie * is maintained on the ALIAS() list. 8120aa3cd4dSrie * 8130aa3cd4dSrie * If this is a simple filename, or a pathname has failed to match the 8140aa3cd4dSrie * NAME() and PATHNAME() check above, look through the ALIAS() list. 8157c478bd9Sstevel@tonic-gate */ 816cce0e03bSab for (APLIST_TRAVERSE(ALIAS(lmp), idx, cp)) { 8170aa3cd4dSrie /* 8180aa3cd4dSrie * If we're looking for a simple filename, _is_so_matched() 8190aa3cd4dSrie * will reduce the ALIAS name to its simple name. 8200aa3cd4dSrie */ 821cce0e03bSab if (_is_so_matched(name, cp, path) == 0) 8227c478bd9Sstevel@tonic-gate return (lmp); 8237c478bd9Sstevel@tonic-gate } 8247c478bd9Sstevel@tonic-gate 8257c478bd9Sstevel@tonic-gate /* 8260aa3cd4dSrie * Finally, if this is a simple file name, and any ALIAS() search has 8270aa3cd4dSrie * been completed, match the simple file name of NAME() and PATHNAME(). 8287c478bd9Sstevel@tonic-gate */ 8290aa3cd4dSrie if (path == 0) { 8300aa3cd4dSrie if (_is_so_matched(name, NAME(lmp), 0) == 0) 8317c478bd9Sstevel@tonic-gate return (lmp); 8320aa3cd4dSrie 8330aa3cd4dSrie if (PATHNAME(lmp) != NAME(lmp)) { 8340aa3cd4dSrie if (_is_so_matched(name, PATHNAME(lmp), 0) == 0) 8350aa3cd4dSrie return (lmp); 8360aa3cd4dSrie } 8377c478bd9Sstevel@tonic-gate } 8380aa3cd4dSrie 8397c478bd9Sstevel@tonic-gate return (0); 8407c478bd9Sstevel@tonic-gate } 8417c478bd9Sstevel@tonic-gate 8420aa3cd4dSrie /* 8430aa3cd4dSrie * Files are opened by ld.so.1 to satisfy dependencies, filtees and dlopen() 8440aa3cd4dSrie * requests. Each request investigates the file based upon the callers 8459aa23310Srie * environment. Once a full path name has been established, the following 8469aa23310Srie * checks are made: 8470aa3cd4dSrie * 8489aa23310Srie * . does the path exist in the link-map lists FullPathNode AVL tree? if 8499aa23310Srie * so, the file is already loaded, and its associated link-map pointer 8509aa23310Srie * is returned. 8519aa23310Srie * . does the path exist in the not-found AVL tree? if so, this path has 8529aa23310Srie * already been determined to not exist, and a failure is returned. 8539aa23310Srie * . a device/inode check, to ensure the same file isn't mapped multiple 8549aa23310Srie * times through different paths. See file_open(). 8559aa23310Srie * 8569aa23310Srie * However, there are cases where a test for an existing file name needs to be 8579aa23310Srie * carried out, such as dlopen(NOLOAD) requests, dldump() requests, and as a 8589aa23310Srie * final fallback to dependency loading. These requests are handled by 8599aa23310Srie * is_so_loaded(). 8600aa3cd4dSrie * 8610aa3cd4dSrie * A traversal through the callers link-map list is carried out, and from each 8620aa3cd4dSrie * link-map, a comparison is made against all of the various names by which the 8639aa23310Srie * object has been referenced. is_so_matched() is used to compares the link-map 8649aa23310Srie * names against the name being searched for. Whether the search name is a full 8659aa23310Srie * path name or a simple file name, governs what comparisons are made. 8660aa3cd4dSrie * 8670aa3cd4dSrie * A full path name, which is a fully resolved path name that starts with a "/" 8680aa3cd4dSrie * character, or a relative path name that includes a "/" character, must match 8690aa3cd4dSrie * the link-map names explicitly. A simple file name, which is any name *not* 8700aa3cd4dSrie * containing a "/" character, are matched against the file name component of 8710aa3cd4dSrie * any link-map names. 8720aa3cd4dSrie */ 8737c478bd9Sstevel@tonic-gate Rt_map * 8749aa23310Srie is_so_loaded(Lm_list *lml, const char *name, int *in_nfavl) 8757c478bd9Sstevel@tonic-gate { 8767c478bd9Sstevel@tonic-gate Rt_map *lmp; 8777c478bd9Sstevel@tonic-gate avl_index_t where; 8787c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 879cce0e03bSab Aliste idx; 8800aa3cd4dSrie int path = 0; 8817c478bd9Sstevel@tonic-gate 8827c478bd9Sstevel@tonic-gate /* 8830aa3cd4dSrie * If the name is a full path name, first determine if the path name is 8849aa23310Srie * registered on the FullPathNode AVL, or not-found AVL trees. 8857c478bd9Sstevel@tonic-gate */ 8869aa23310Srie if (name[0] == '/') { 8879aa23310Srie if (((lmp = fpavl_recorded(lml, name, &where)) != NULL) && 8889aa23310Srie ((FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) == 0)) 8899aa23310Srie return (lmp); 8909aa23310Srie if (nfavl_recorded(name, 0)) { 8919aa23310Srie /* 8929aa23310Srie * For dlopen() and dlsym() fall backs, indicate that 8939aa23310Srie * a registered not-found path has indicated that this 8949aa23310Srie * object does not exist. 8959aa23310Srie */ 8969aa23310Srie if (in_nfavl) 8979aa23310Srie (*in_nfavl)++; 8989aa23310Srie return (0); 8999aa23310Srie } 9009aa23310Srie } 9017c478bd9Sstevel@tonic-gate 9027c478bd9Sstevel@tonic-gate /* 9030aa3cd4dSrie * Determine whether the name is a simple file name, or a path name. 9047c478bd9Sstevel@tonic-gate */ 9050aa3cd4dSrie if (strchr(name, '/')) 9060aa3cd4dSrie path++; 9077c478bd9Sstevel@tonic-gate 9087c478bd9Sstevel@tonic-gate /* 9097c478bd9Sstevel@tonic-gate * Loop through the callers link-map lists. 9107c478bd9Sstevel@tonic-gate */ 911cce0e03bSab for (ALIST_TRAVERSE(lml->lm_lists, idx, lmc)) { 9127c478bd9Sstevel@tonic-gate for (lmp = lmc->lc_head; lmp; lmp = (Rt_map *)NEXT(lmp)) { 9137c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) 9147c478bd9Sstevel@tonic-gate continue; 9157c478bd9Sstevel@tonic-gate 9160aa3cd4dSrie if (is_so_matched(lmp, name, path)) 9177c478bd9Sstevel@tonic-gate return (lmp); 9187c478bd9Sstevel@tonic-gate } 9197c478bd9Sstevel@tonic-gate } 9207c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 9217c478bd9Sstevel@tonic-gate } 9227c478bd9Sstevel@tonic-gate 9237c478bd9Sstevel@tonic-gate /* 9247c478bd9Sstevel@tonic-gate * Tracing is enabled by the LD_TRACE_LOADED_OPTIONS environment variable which 9257c478bd9Sstevel@tonic-gate * is normally set from ldd(1). For each link map we load, print the load name 9267c478bd9Sstevel@tonic-gate * and the full pathname of the shared object. 9277c478bd9Sstevel@tonic-gate */ 9287c478bd9Sstevel@tonic-gate /* ARGSUSED4 */ 9297c478bd9Sstevel@tonic-gate static void 9307c478bd9Sstevel@tonic-gate trace_so(Rt_map *clmp, Rej_desc *rej, const char *name, const char *path, 9317c478bd9Sstevel@tonic-gate int alter, const char *nfound) 9327c478bd9Sstevel@tonic-gate { 9337c478bd9Sstevel@tonic-gate const char *str = MSG_ORIG(MSG_STR_EMPTY); 9347c478bd9Sstevel@tonic-gate const char *reject = MSG_ORIG(MSG_STR_EMPTY); 9357c478bd9Sstevel@tonic-gate char _reject[PATH_MAX]; 9367c478bd9Sstevel@tonic-gate 9377c478bd9Sstevel@tonic-gate /* 9387c478bd9Sstevel@tonic-gate * The first time through trace_so() will only have lddstub on the 9397c478bd9Sstevel@tonic-gate * link-map list and the preloaded shared object is supplied as "path". 9407c478bd9Sstevel@tonic-gate * As we don't want to print this shared object as a dependency, but 9417c478bd9Sstevel@tonic-gate * instead inspect *its* dependencies, return. 9427c478bd9Sstevel@tonic-gate */ 9437c478bd9Sstevel@tonic-gate if (FLAGS1(clmp) & FL1_RT_LDDSTUB) 9447c478bd9Sstevel@tonic-gate return; 9457c478bd9Sstevel@tonic-gate 9467c478bd9Sstevel@tonic-gate /* 9477c478bd9Sstevel@tonic-gate * Without any rejection info, this is a supplied not-found condition. 9487c478bd9Sstevel@tonic-gate */ 9497c478bd9Sstevel@tonic-gate if (rej && (rej->rej_type == 0)) { 9507c478bd9Sstevel@tonic-gate (void) printf(nfound, name); 9517c478bd9Sstevel@tonic-gate return; 9527c478bd9Sstevel@tonic-gate } 9537c478bd9Sstevel@tonic-gate 9547c478bd9Sstevel@tonic-gate /* 9557c478bd9Sstevel@tonic-gate * If rejection information exists then establish what object was 9567c478bd9Sstevel@tonic-gate * found and the reason for its rejection. 9577c478bd9Sstevel@tonic-gate */ 9587c478bd9Sstevel@tonic-gate if (rej) { 959de777a60Sab Conv_reject_desc_buf_t rej_buf; 960de777a60Sab 9617c478bd9Sstevel@tonic-gate /* LINTED */ 9627c478bd9Sstevel@tonic-gate (void) snprintf(_reject, PATH_MAX, 963de777a60Sab MSG_INTL(ldd_reject[rej->rej_type]), 964ba2be530Sab conv_reject_desc(rej, &rej_buf, M_MACH)); 9657c478bd9Sstevel@tonic-gate if (rej->rej_name) 9667c478bd9Sstevel@tonic-gate path = rej->rej_name; 9677c478bd9Sstevel@tonic-gate reject = (char *)_reject; 9687c478bd9Sstevel@tonic-gate 9697c478bd9Sstevel@tonic-gate /* 9707c478bd9Sstevel@tonic-gate * Was an alternative pathname defined (from a configuration 9717c478bd9Sstevel@tonic-gate * file). 9727c478bd9Sstevel@tonic-gate */ 9737c478bd9Sstevel@tonic-gate if (rej->rej_flag & FLG_FD_ALTER) 9747c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 9757c478bd9Sstevel@tonic-gate } else { 9767c478bd9Sstevel@tonic-gate if (alter) 9777c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 9787c478bd9Sstevel@tonic-gate } 9797c478bd9Sstevel@tonic-gate 9807c478bd9Sstevel@tonic-gate /* 9817c478bd9Sstevel@tonic-gate * If the load name isn't a full pathname print its associated pathname 9827c478bd9Sstevel@tonic-gate * together with all the other information we've gathered. 9837c478bd9Sstevel@tonic-gate */ 9847c478bd9Sstevel@tonic-gate if (*name == '/') 9857247f888Srie (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), path, str, reject); 9867c478bd9Sstevel@tonic-gate else 9877247f888Srie (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), name, path, str, 9887247f888Srie reject); 9897c478bd9Sstevel@tonic-gate } 9907c478bd9Sstevel@tonic-gate 9917c478bd9Sstevel@tonic-gate 9927c478bd9Sstevel@tonic-gate /* 9937c478bd9Sstevel@tonic-gate * Establish a link-map mode, initializing it if it has just been loaded, or 9947c478bd9Sstevel@tonic-gate * potentially updating it if it already exists. 9957c478bd9Sstevel@tonic-gate */ 9967c478bd9Sstevel@tonic-gate int 9977c478bd9Sstevel@tonic-gate update_mode(Rt_map *lmp, int omode, int nmode) 9987c478bd9Sstevel@tonic-gate { 999dffec89cSrie Lm_list *lml = LIST(lmp); 10007c478bd9Sstevel@tonic-gate int pmode = 0; 10017c478bd9Sstevel@tonic-gate 10027c478bd9Sstevel@tonic-gate /* 10037c478bd9Sstevel@tonic-gate * A newly loaded object hasn't had its mode set yet. Modes are used to 10047c478bd9Sstevel@tonic-gate * load dependencies, so don't propagate any parent or no-load flags, as 10057c478bd9Sstevel@tonic-gate * these would adversely affect this objects ability to load any of its 10067c478bd9Sstevel@tonic-gate * dependencies that aren't already loaded. RTLD_FIRST is applicable to 10077c478bd9Sstevel@tonic-gate * this objects handle creation only, and should not be propagated. 10087c478bd9Sstevel@tonic-gate */ 10097c478bd9Sstevel@tonic-gate if ((FLAGS(lmp) & FLG_RT_MODESET) == 0) { 10107c478bd9Sstevel@tonic-gate MODE(lmp) |= nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST); 10117c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_MODESET; 10127c478bd9Sstevel@tonic-gate return (1); 10137c478bd9Sstevel@tonic-gate } 10147c478bd9Sstevel@tonic-gate 10157c478bd9Sstevel@tonic-gate /* 10167c478bd9Sstevel@tonic-gate * Establish any new overriding modes. RTLD_LAZY and RTLD_NOW should be 10177c478bd9Sstevel@tonic-gate * represented individually (this is historic, as these two flags were 10187c478bd9Sstevel@tonic-gate * the only flags originally available to dlopen()). Other flags are 10197c478bd9Sstevel@tonic-gate * accumulative, but have a hierarchy of preference. 10207c478bd9Sstevel@tonic-gate */ 10217c478bd9Sstevel@tonic-gate if ((omode & RTLD_LAZY) && (nmode & RTLD_NOW)) { 10227c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_LAZY; 10237c478bd9Sstevel@tonic-gate pmode |= RTLD_NOW; 10247c478bd9Sstevel@tonic-gate } 10257c478bd9Sstevel@tonic-gate 10267c478bd9Sstevel@tonic-gate pmode |= ((~omode & nmode) & 10277c478bd9Sstevel@tonic-gate (RTLD_GLOBAL | RTLD_WORLD | RTLD_NODELETE)); 10287c478bd9Sstevel@tonic-gate if (pmode) { 10295aefb655Srie DBG_CALL(Dbg_file_mode_promote(lmp, pmode)); 10307c478bd9Sstevel@tonic-gate MODE(lmp) |= pmode; 10317c478bd9Sstevel@tonic-gate } 10327c478bd9Sstevel@tonic-gate 10337c478bd9Sstevel@tonic-gate /* 10347c478bd9Sstevel@tonic-gate * If this load is an RTLD_NOW request and the object has already been 10357c478bd9Sstevel@tonic-gate * loaded non-RTLD_NOW, append this object to the relocation-now list 10367c478bd9Sstevel@tonic-gate * of the objects associated control list. Note, if the object hasn't 10377c478bd9Sstevel@tonic-gate * yet been relocated, setting its MODE() to RTLD_NOW will establish 10387c478bd9Sstevel@tonic-gate * full relocation processing when it eventually gets relocated. 10397c478bd9Sstevel@tonic-gate */ 10407c478bd9Sstevel@tonic-gate if ((pmode & RTLD_NOW) && 10417c478bd9Sstevel@tonic-gate (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))) { 10427c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 10437c478bd9Sstevel@tonic-gate 10447c478bd9Sstevel@tonic-gate /* LINTED */ 1045cce0e03bSab lmc = (Lm_cntl *)alist_item_by_offset(LIST(lmp)->lm_lists, 1046cce0e03bSab CNTL(lmp)); 1047cce0e03bSab (void) aplist_append(&lmc->lc_now, lmp, AL_CNT_LMNOW); 10487c478bd9Sstevel@tonic-gate } 10497c478bd9Sstevel@tonic-gate 10507c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 10517c478bd9Sstevel@tonic-gate /* 10527c478bd9Sstevel@tonic-gate * For patch backward compatibility the following .init collection 10537c478bd9Sstevel@tonic-gate * is disabled. 10547c478bd9Sstevel@tonic-gate */ 10557c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 10567c478bd9Sstevel@tonic-gate return (pmode); 10577c478bd9Sstevel@tonic-gate #endif 10587c478bd9Sstevel@tonic-gate 10597c478bd9Sstevel@tonic-gate /* 1060dffec89cSrie * If this objects .init has been collected but has not yet been called, 1061dffec89cSrie * it may be necessary to reevaluate the object using tsort(). For 10627c478bd9Sstevel@tonic-gate * example, a new dlopen() hierarchy may bind to uninitialized objects 10637c478bd9Sstevel@tonic-gate * that are already loaded, or a dlopen(RTLD_NOW) can establish new 10647c478bd9Sstevel@tonic-gate * bindings between already loaded objects that require the tsort() 1065dffec89cSrie * information be recomputed. If however, no new objects have been 1066dffec89cSrie * added to the process, and this object hasn't been promoted, don't 1067dffec89cSrie * bother reevaluating the .init. The present tsort() information is 1068dffec89cSrie * probably as accurate as necessary, and by not establishing a parallel 1069dffec89cSrie * tsort() we can help reduce the amount of recursion possible between 1070dffec89cSrie * .inits. 10717c478bd9Sstevel@tonic-gate */ 1072dffec89cSrie if (((FLAGS(lmp) & 1073dffec89cSrie (FLG_RT_INITCLCT | FLG_RT_INITCALL)) == FLG_RT_INITCLCT) && 1074dffec89cSrie ((lml->lm_flags & LML_FLG_OBJADDED) || ((pmode & RTLD_NOW) && 1075dffec89cSrie (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))))) { 10767c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_INITCLCT; 10777c478bd9Sstevel@tonic-gate LIST(lmp)->lm_init++; 1078dffec89cSrie LIST(lmp)->lm_flags |= LML_FLG_OBJREEVAL; 10797c478bd9Sstevel@tonic-gate } 10807c478bd9Sstevel@tonic-gate 10817c478bd9Sstevel@tonic-gate return (pmode); 10827c478bd9Sstevel@tonic-gate } 10837c478bd9Sstevel@tonic-gate 10847c478bd9Sstevel@tonic-gate /* 10857c478bd9Sstevel@tonic-gate * Determine whether an alias name already exists, and if not create one. This 10867c478bd9Sstevel@tonic-gate * is typically used to retain dependency names, such as "libc.so.1", which 10877c478bd9Sstevel@tonic-gate * would have been expanded to full path names when they were loaded. The 10887c478bd9Sstevel@tonic-gate * full path names (NAME() and possibly PATHNAME()) are maintained as Fullpath 10897c478bd9Sstevel@tonic-gate * AVL nodes, and thus would have been matched by fpavl_loaded() during 10907c478bd9Sstevel@tonic-gate * file_open(). 10917c478bd9Sstevel@tonic-gate */ 10927c478bd9Sstevel@tonic-gate int 10937c478bd9Sstevel@tonic-gate append_alias(Rt_map *lmp, const char *str, int *added) 10947c478bd9Sstevel@tonic-gate { 1095cce0e03bSab Aliste idx; 1096cce0e03bSab char *cp; 10977c478bd9Sstevel@tonic-gate 10987c478bd9Sstevel@tonic-gate /* 10997c478bd9Sstevel@tonic-gate * Determine if this filename is already on the alias list. 11007c478bd9Sstevel@tonic-gate */ 1101cce0e03bSab for (APLIST_TRAVERSE(ALIAS(lmp), idx, cp)) { 1102cce0e03bSab if (strcmp(cp, str) == 0) 11037c478bd9Sstevel@tonic-gate return (1); 11047c478bd9Sstevel@tonic-gate } 11057c478bd9Sstevel@tonic-gate 11067c478bd9Sstevel@tonic-gate /* 11077c478bd9Sstevel@tonic-gate * This is a new alias, append it to the alias list. 11087c478bd9Sstevel@tonic-gate */ 11098521e5e6Srie if ((cp = strdup(str)) == NULL) 11107c478bd9Sstevel@tonic-gate return (0); 11117c478bd9Sstevel@tonic-gate 1112cce0e03bSab if (aplist_append(&ALIAS(lmp), cp, AL_CNT_ALIAS) == NULL) { 11137c478bd9Sstevel@tonic-gate free(cp); 11147c478bd9Sstevel@tonic-gate return (0); 11157c478bd9Sstevel@tonic-gate } 11167c478bd9Sstevel@tonic-gate if (added) 11177c478bd9Sstevel@tonic-gate *added = 1; 11187c478bd9Sstevel@tonic-gate return (1); 11197c478bd9Sstevel@tonic-gate } 11207c478bd9Sstevel@tonic-gate 11217c478bd9Sstevel@tonic-gate /* 11227c478bd9Sstevel@tonic-gate * Determine whether a file is already loaded by comparing device and inode 11237c478bd9Sstevel@tonic-gate * values. 11247c478bd9Sstevel@tonic-gate */ 11257c478bd9Sstevel@tonic-gate static Rt_map * 11267c478bd9Sstevel@tonic-gate is_devinode_loaded(struct stat *status, Lm_list *lml, const char *name, 11277c478bd9Sstevel@tonic-gate uint_t flags) 11287c478bd9Sstevel@tonic-gate { 11297c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 1130cce0e03bSab Aliste idx; 11317c478bd9Sstevel@tonic-gate 11327c478bd9Sstevel@tonic-gate /* 11337c478bd9Sstevel@tonic-gate * If this is an auditor, it will have been opened on a new link-map. 11348af2c5b9Srie * To prevent multiple occurrences of the same auditor on multiple 11357c478bd9Sstevel@tonic-gate * link-maps, search the head of each link-map list and see if this 11367c478bd9Sstevel@tonic-gate * object is already loaded as an auditor. 11377c478bd9Sstevel@tonic-gate */ 11387c478bd9Sstevel@tonic-gate if (flags & FLG_RT_AUDIT) { 1139aa736cbeSrie Lm_list *lml; 1140aa736cbeSrie Listnode *lnp; 11417c478bd9Sstevel@tonic-gate 11427c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(&dynlm_list, lnp, lml)) { 11437c478bd9Sstevel@tonic-gate Rt_map *nlmp = lml->lm_head; 11447c478bd9Sstevel@tonic-gate 11457c478bd9Sstevel@tonic-gate if (nlmp && ((FLAGS(nlmp) & 11467c478bd9Sstevel@tonic-gate (FLG_RT_AUDIT | FLG_RT_DELETE)) == FLG_RT_AUDIT) && 11477c478bd9Sstevel@tonic-gate (STDEV(nlmp) == status->st_dev) && 11487c478bd9Sstevel@tonic-gate (STINO(nlmp) == status->st_ino)) 11497c478bd9Sstevel@tonic-gate return (nlmp); 11507c478bd9Sstevel@tonic-gate } 11517c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 11527c478bd9Sstevel@tonic-gate } 11537c478bd9Sstevel@tonic-gate 11547c478bd9Sstevel@tonic-gate /* 11557c478bd9Sstevel@tonic-gate * If the file has been found determine from the new files status 11567c478bd9Sstevel@tonic-gate * information if this file is actually linked to one we already have 11577c478bd9Sstevel@tonic-gate * mapped. This catches symlink names not caught by is_so_loaded(). 11587c478bd9Sstevel@tonic-gate */ 1159cce0e03bSab for (ALIST_TRAVERSE(lml->lm_lists, idx, lmc)) { 11607c478bd9Sstevel@tonic-gate Rt_map *nlmp; 11617c478bd9Sstevel@tonic-gate 11627c478bd9Sstevel@tonic-gate for (nlmp = lmc->lc_head; nlmp; nlmp = (Rt_map *)NEXT(nlmp)) { 11637c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_DELETE) || 11647c478bd9Sstevel@tonic-gate (FLAGS1(nlmp) & FL1_RT_LDDSTUB)) 11657c478bd9Sstevel@tonic-gate continue; 11667c478bd9Sstevel@tonic-gate 11677c478bd9Sstevel@tonic-gate if ((STDEV(nlmp) != status->st_dev) || 11687c478bd9Sstevel@tonic-gate (STINO(nlmp) != status->st_ino)) 11697c478bd9Sstevel@tonic-gate continue; 11707c478bd9Sstevel@tonic-gate 11717c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_VERBOSE) { 11727247f888Srie /* BEGIN CSTYLED */ 11737c478bd9Sstevel@tonic-gate if (*name == '/') 11747c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 11757c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 11767c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 11777c478bd9Sstevel@tonic-gate else 11787c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 11797c478bd9Sstevel@tonic-gate name, NAME(nlmp), 11807c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 11817c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 11827247f888Srie /* END CSTYLED */ 11837c478bd9Sstevel@tonic-gate } 11847c478bd9Sstevel@tonic-gate return (nlmp); 11857c478bd9Sstevel@tonic-gate } 11867c478bd9Sstevel@tonic-gate } 11877c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 11887c478bd9Sstevel@tonic-gate } 11897c478bd9Sstevel@tonic-gate 11907c478bd9Sstevel@tonic-gate /* 11917c478bd9Sstevel@tonic-gate * Generate any error messages indicating a file could not be found. When 11927c478bd9Sstevel@tonic-gate * preloading or auditing a secure application, it can be a little more helpful 11937c478bd9Sstevel@tonic-gate * to indicate that a search of secure directories has failed, so adjust the 11947c478bd9Sstevel@tonic-gate * messages accordingly. 11957c478bd9Sstevel@tonic-gate */ 11967c478bd9Sstevel@tonic-gate void 11977c478bd9Sstevel@tonic-gate file_notfound(Lm_list *lml, const char *name, Rt_map *clmp, uint_t flags, 11987c478bd9Sstevel@tonic-gate Rej_desc * rej) 11997c478bd9Sstevel@tonic-gate { 12007c478bd9Sstevel@tonic-gate int secure = 0; 12017c478bd9Sstevel@tonic-gate 12027c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SECURE) && 12037c478bd9Sstevel@tonic-gate (flags & (FLG_RT_PRELOAD | FLG_RT_AUDIT))) 12047c478bd9Sstevel@tonic-gate secure++; 12057c478bd9Sstevel@tonic-gate 12067c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 12077c478bd9Sstevel@tonic-gate /* 12087c478bd9Sstevel@tonic-gate * Under ldd(1), auxiliary filtees that can't be loaded are 12097c478bd9Sstevel@tonic-gate * ignored, unless verbose errors are requested. 12107c478bd9Sstevel@tonic-gate */ 12117c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SILENCERR) && 12127c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_TRC_VERBOSE) == 0)) 12137c478bd9Sstevel@tonic-gate return; 12147c478bd9Sstevel@tonic-gate 12157c478bd9Sstevel@tonic-gate if (secure) 12167c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 12177c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_SEC_NFOUND)); 12187c478bd9Sstevel@tonic-gate else 12197c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 12207c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_NFOUND)); 12217c478bd9Sstevel@tonic-gate return; 12227c478bd9Sstevel@tonic-gate } 12237c478bd9Sstevel@tonic-gate 12247c478bd9Sstevel@tonic-gate if (rej->rej_type) { 1225de777a60Sab Conv_reject_desc_buf_t rej_buf; 1226de777a60Sab 12275aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(err_reject[rej->rej_type]), 12287c478bd9Sstevel@tonic-gate rej->rej_name ? rej->rej_name : MSG_INTL(MSG_STR_UNKNOWN), 1229ba2be530Sab conv_reject_desc(rej, &rej_buf, M_MACH)); 12307c478bd9Sstevel@tonic-gate return; 12317c478bd9Sstevel@tonic-gate } 12327c478bd9Sstevel@tonic-gate 12337c478bd9Sstevel@tonic-gate if (secure) 12345aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SEC_OPEN), name); 12357c478bd9Sstevel@tonic-gate else 12365aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), name, 12377c478bd9Sstevel@tonic-gate strerror(ENOENT)); 12387c478bd9Sstevel@tonic-gate } 12397c478bd9Sstevel@tonic-gate 12407c478bd9Sstevel@tonic-gate static int 12417c478bd9Sstevel@tonic-gate file_open(int err, Lm_list *lml, const char *oname, const char *nname, 12429aa23310Srie Rt_map *clmp, uint_t flags, Fdesc *fdesc, Rej_desc *rej, int *in_nfavl) 12437c478bd9Sstevel@tonic-gate { 12447c478bd9Sstevel@tonic-gate struct stat status; 12457c478bd9Sstevel@tonic-gate Rt_map *nlmp; 12468521e5e6Srie int resolved = 0; 12479aa23310Srie char *name; 12489aa23310Srie avl_index_t nfavlwhere = 0; 12497c478bd9Sstevel@tonic-gate 12507c478bd9Sstevel@tonic-gate fdesc->fd_oname = oname; 12517c478bd9Sstevel@tonic-gate 12527c478bd9Sstevel@tonic-gate if ((err == 0) && (fdesc->fd_flags & FLG_FD_ALTER)) 12535aefb655Srie DBG_CALL(Dbg_file_config_obj(lml, oname, 0, nname)); 12547c478bd9Sstevel@tonic-gate 12557c478bd9Sstevel@tonic-gate /* 12567c478bd9Sstevel@tonic-gate * If we're dealing with a full pathname, determine whether this 12577c478bd9Sstevel@tonic-gate * pathname is already known. Other pathnames fall through to the 12587c478bd9Sstevel@tonic-gate * dev/inode check, as even though the pathname may look the same as 12597c478bd9Sstevel@tonic-gate * one previously used, the process may have changed directory. 12607c478bd9Sstevel@tonic-gate */ 12617c478bd9Sstevel@tonic-gate if ((err == 0) && (nname[0] == '/')) { 12629aa23310Srie if ((nlmp = fpavl_recorded(lml, nname, 12637c478bd9Sstevel@tonic-gate &(fdesc->fd_avlwhere))) != NULL) { 12647c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 12657c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 12667c478bd9Sstevel@tonic-gate return (1); 12677c478bd9Sstevel@tonic-gate } 12689aa23310Srie if (nfavl_recorded(nname, &nfavlwhere)) { 12699aa23310Srie /* 12709aa23310Srie * For dlopen() and dlsym() fall backs, indicate that 12719aa23310Srie * a registered not-found path has indicated that this 12729aa23310Srie * object does not exist. If this path has been 12739aa23310Srie * constructed as part of expanding a HWCAP directory, 12749aa23310Srie * and as this is a silent failure, where no rejection 12759aa23310Srie * message is created, free the original name to 12769aa23310Srie * simplify the life of the caller. 12779aa23310Srie */ 12789aa23310Srie if (in_nfavl) 12799aa23310Srie (*in_nfavl)++; 12809aa23310Srie if (flags & FLG_RT_HWCAP) 12819aa23310Srie free((void *)nname); 12829aa23310Srie return (0); 12839aa23310Srie } 12847c478bd9Sstevel@tonic-gate } 12857c478bd9Sstevel@tonic-gate 12867c478bd9Sstevel@tonic-gate if ((err == 0) && ((stat(nname, &status)) != -1)) { 12877c478bd9Sstevel@tonic-gate char path[PATH_MAX]; 12887c478bd9Sstevel@tonic-gate int fd, size, added; 12897c478bd9Sstevel@tonic-gate 12907c478bd9Sstevel@tonic-gate /* 12917c478bd9Sstevel@tonic-gate * If this path has been constructed as part of expanding a 12928521e5e6Srie * HWCAP directory, ignore any subdirectories. As this is a 12938521e5e6Srie * silent failure, where no rejection message is created, free 12948521e5e6Srie * the original name to simplify the life of the caller. For 12958521e5e6Srie * any other reference that expands to a directory, fall through 12968af2c5b9Srie * to construct a meaningful rejection message. 12977c478bd9Sstevel@tonic-gate */ 12987c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) && 12998521e5e6Srie ((status.st_mode & S_IFMT) == S_IFDIR)) { 13008521e5e6Srie free((void *)nname); 13017c478bd9Sstevel@tonic-gate return (0); 13028521e5e6Srie } 13037c478bd9Sstevel@tonic-gate 13047c478bd9Sstevel@tonic-gate /* 13057c478bd9Sstevel@tonic-gate * Resolve the filename and determine whether the resolved name 13067c478bd9Sstevel@tonic-gate * is already known. Typically, the previous fpavl_loaded() 13077c478bd9Sstevel@tonic-gate * will have caught this, as both NAME() and PATHNAME() for a 13087c478bd9Sstevel@tonic-gate * link-map are recorded in the FullNode AVL tree. However, 13097c478bd9Sstevel@tonic-gate * instances exist where a file can be replaced (loop-back 13107c478bd9Sstevel@tonic-gate * mounts, bfu, etc.), and reference is made to the original 13117c478bd9Sstevel@tonic-gate * file through a symbolic link. By checking the pathname here, 13127c478bd9Sstevel@tonic-gate * we don't fall through to the dev/inode check and conclude 13137c478bd9Sstevel@tonic-gate * that a new file should be loaded. 13147c478bd9Sstevel@tonic-gate */ 13157c478bd9Sstevel@tonic-gate if ((nname[0] == '/') && (rtld_flags & RT_FL_EXECNAME) && 13167c478bd9Sstevel@tonic-gate ((size = resolvepath(nname, path, (PATH_MAX - 1))) > 0)) { 13177c478bd9Sstevel@tonic-gate path[size] = '\0'; 13187c478bd9Sstevel@tonic-gate 13197c478bd9Sstevel@tonic-gate if (strcmp(nname, path)) { 132024a6229eSrie if ((nlmp = 13219aa23310Srie fpavl_recorded(lml, path, 0)) != NULL) { 13227c478bd9Sstevel@tonic-gate added = 0; 13237c478bd9Sstevel@tonic-gate 13247c478bd9Sstevel@tonic-gate if (append_alias(nlmp, nname, 13257c478bd9Sstevel@tonic-gate &added) == 0) 13267c478bd9Sstevel@tonic-gate return (0); 13277247f888Srie /* BEGIN CSTYLED */ 13287c478bd9Sstevel@tonic-gate if (added) 132910a4fa49Srie DBG_CALL(Dbg_file_skip(LIST(clmp), 13305aefb655Srie NAME(nlmp), nname)); 13317247f888Srie /* END CSTYLED */ 13327c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 13337c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 13347c478bd9Sstevel@tonic-gate return (1); 13357c478bd9Sstevel@tonic-gate } 13367c478bd9Sstevel@tonic-gate 13377c478bd9Sstevel@tonic-gate /* 13387c478bd9Sstevel@tonic-gate * If this pathname hasn't been loaded, save 13397c478bd9Sstevel@tonic-gate * the resolved pathname so that it doesn't 13407c478bd9Sstevel@tonic-gate * have to be recomputed as part of fullpath() 13417c478bd9Sstevel@tonic-gate * processing. 13427c478bd9Sstevel@tonic-gate */ 13438521e5e6Srie if ((fdesc->fd_pname = strdup(path)) == NULL) 13447c478bd9Sstevel@tonic-gate return (0); 13458521e5e6Srie resolved = 1; 13467c478bd9Sstevel@tonic-gate } else { 13477c478bd9Sstevel@tonic-gate /* 13487c478bd9Sstevel@tonic-gate * If the resolved name doesn't differ from the 13497c478bd9Sstevel@tonic-gate * original, save it without duplication. 13507c478bd9Sstevel@tonic-gate * Having fd_pname set indicates that no further 13517c478bd9Sstevel@tonic-gate * resolvepath processing is necessary. 13527c478bd9Sstevel@tonic-gate */ 13537c478bd9Sstevel@tonic-gate fdesc->fd_pname = nname; 13547c478bd9Sstevel@tonic-gate } 13557c478bd9Sstevel@tonic-gate } 13567c478bd9Sstevel@tonic-gate 13577c478bd9Sstevel@tonic-gate if (nlmp = is_devinode_loaded(&status, lml, nname, flags)) { 1358c75e1b9dSrie if (flags & FLG_RT_AUDIT) { 1359c75e1b9dSrie /* 1360c75e1b9dSrie * If we've been requested to load an auditor, 1361c75e1b9dSrie * and an auditor of the same name already 1362c75e1b9dSrie * exists, then the original auditor is used. 1363c75e1b9dSrie */ 1364c75e1b9dSrie DBG_CALL(Dbg_audit_skip(LIST(clmp), 1365c75e1b9dSrie NAME(nlmp), LIST(nlmp)->lm_lmidstr)); 1366c75e1b9dSrie } else { 1367c75e1b9dSrie /* 1368c75e1b9dSrie * Otherwise, if an alternatively named file 1369c75e1b9dSrie * has been found for the same dev/inode, add 1370c75e1b9dSrie * a new name alias, and insert any alias full 1371c75e1b9dSrie * pathname in the link-map lists AVL tree. 1372c75e1b9dSrie */ 1373c75e1b9dSrie added = 0; 13747c478bd9Sstevel@tonic-gate 1375c75e1b9dSrie if (append_alias(nlmp, nname, &added) == 0) 13767c478bd9Sstevel@tonic-gate return (0); 1377c75e1b9dSrie if (added) { 1378c75e1b9dSrie if ((nname[0] == '/') && 1379c75e1b9dSrie (fpavl_insert(lml, nlmp, 1380c75e1b9dSrie nname, 0) == 0)) 1381c75e1b9dSrie return (0); 1382c75e1b9dSrie DBG_CALL(Dbg_file_skip(LIST(clmp), 1383c75e1b9dSrie NAME(nlmp), nname)); 1384c75e1b9dSrie } 13857c478bd9Sstevel@tonic-gate } 1386c75e1b9dSrie 1387c75e1b9dSrie /* 1388c75e1b9dSrie * Record in the file descriptor the existing object 1389c75e1b9dSrie * that satisfies this open request. 1390c75e1b9dSrie */ 13917c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 13927c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 13937c478bd9Sstevel@tonic-gate return (1); 13947c478bd9Sstevel@tonic-gate } 13957c478bd9Sstevel@tonic-gate 13967c478bd9Sstevel@tonic-gate if ((fd = open(nname, O_RDONLY, 0)) == -1) { 13977c478bd9Sstevel@tonic-gate /* 13987c478bd9Sstevel@tonic-gate * As the file must exist for the previous stat() to 13997c478bd9Sstevel@tonic-gate * have succeeded, record the error condition. 14007c478bd9Sstevel@tonic-gate */ 14017c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 14027c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 14037c478bd9Sstevel@tonic-gate } else { 14047c478bd9Sstevel@tonic-gate Fct *ftp; 14057c478bd9Sstevel@tonic-gate 14067c478bd9Sstevel@tonic-gate if ((ftp = are_u_this(rej, fd, &status, nname)) != 0) { 14077c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 14087c478bd9Sstevel@tonic-gate fdesc->fd_ftp = ftp; 14097c478bd9Sstevel@tonic-gate fdesc->fd_dev = status.st_dev; 14107c478bd9Sstevel@tonic-gate fdesc->fd_ino = status.st_ino; 14117c478bd9Sstevel@tonic-gate fdesc->fd_fd = fd; 14127c478bd9Sstevel@tonic-gate 14137c478bd9Sstevel@tonic-gate /* 14147c478bd9Sstevel@tonic-gate * Trace that this open has succeeded. 14157c478bd9Sstevel@tonic-gate */ 14167c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 14177247f888Srie trace_so(clmp, 0, oname, nname, 14187247f888Srie (fdesc->fd_flags & FLG_FD_ALTER), 14197247f888Srie 0); 14207c478bd9Sstevel@tonic-gate } 14217c478bd9Sstevel@tonic-gate return (1); 14227c478bd9Sstevel@tonic-gate } 14237c478bd9Sstevel@tonic-gate (void) close(fd); 14247c478bd9Sstevel@tonic-gate } 14257c478bd9Sstevel@tonic-gate 14267c478bd9Sstevel@tonic-gate } else if (errno != ENOENT) { 14277c478bd9Sstevel@tonic-gate /* 14287c478bd9Sstevel@tonic-gate * If the open() failed for anything other than the file not 14297c478bd9Sstevel@tonic-gate * existing, record the error condition. 14307c478bd9Sstevel@tonic-gate */ 14317c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 14327c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 14337c478bd9Sstevel@tonic-gate } 14347c478bd9Sstevel@tonic-gate 14359aa23310Srie /* 14369aa23310Srie * Regardless of error, duplicate and record any full path names that 14379aa23310Srie * can't be used on the "not-found" AVL tree. 14389aa23310Srie */ 14399aa23310Srie if ((nname[0] == '/') && ((name = strdup(nname)) != NULL)) 14409aa23310Srie nfavl_insert(name, nfavlwhere); 14419aa23310Srie 14427c478bd9Sstevel@tonic-gate /* 14437c478bd9Sstevel@tonic-gate * Indicate any rejection. 14447c478bd9Sstevel@tonic-gate */ 14457c478bd9Sstevel@tonic-gate if (rej->rej_type) { 14468521e5e6Srie /* 14478521e5e6Srie * If this pathname was resolved and duplicated, remove the 14488521e5e6Srie * allocated name to simplify the cleanup of the callers. 14498521e5e6Srie */ 14508521e5e6Srie if (resolved) { 14518521e5e6Srie free((void *)fdesc->fd_pname); 14528521e5e6Srie fdesc->fd_pname = NULL; 14538521e5e6Srie } 14547c478bd9Sstevel@tonic-gate rej->rej_name = nname; 14557c478bd9Sstevel@tonic-gate rej->rej_flag = (fdesc->fd_flags & FLG_FD_ALTER); 1456ba2be530Sab DBG_CALL(Dbg_file_rejected(lml, rej, M_MACH)); 14577c478bd9Sstevel@tonic-gate } 14587c478bd9Sstevel@tonic-gate return (0); 14597c478bd9Sstevel@tonic-gate } 14607c478bd9Sstevel@tonic-gate 14617c478bd9Sstevel@tonic-gate /* 14627c478bd9Sstevel@tonic-gate * Find a full pathname (it contains a "/"). 14637c478bd9Sstevel@tonic-gate */ 14647c478bd9Sstevel@tonic-gate int 14657c478bd9Sstevel@tonic-gate find_path(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 14669aa23310Srie Fdesc *fdesc, Rej_desc *rej, int *in_nfavl) 14677c478bd9Sstevel@tonic-gate { 14687c478bd9Sstevel@tonic-gate int err = 0; 14697c478bd9Sstevel@tonic-gate 14707c478bd9Sstevel@tonic-gate /* 14717c478bd9Sstevel@tonic-gate * If directory configuration exists determine if this path is known. 14727c478bd9Sstevel@tonic-gate */ 14737c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DIRCFG) { 14747c478bd9Sstevel@tonic-gate Rtc_obj *obj; 14757c478bd9Sstevel@tonic-gate const char *aname; 14767c478bd9Sstevel@tonic-gate 14777c478bd9Sstevel@tonic-gate if ((obj = elf_config_ent(oname, (Word)elf_hash(oname), 14787c478bd9Sstevel@tonic-gate 0, &aname)) != 0) { 14797c478bd9Sstevel@tonic-gate /* 14807c478bd9Sstevel@tonic-gate * If the configuration file states that this path is a 14817c478bd9Sstevel@tonic-gate * directory, or the path is explicitly defined as 14827c478bd9Sstevel@tonic-gate * non-existent (ie. a unused platform specific 14837c478bd9Sstevel@tonic-gate * library), then go no further. 14847c478bd9Sstevel@tonic-gate */ 14857c478bd9Sstevel@tonic-gate if (obj->co_flags & RTC_OBJ_DIRENT) { 14867c478bd9Sstevel@tonic-gate err = EISDIR; 14877c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & 14887c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == 14897c478bd9Sstevel@tonic-gate RTC_OBJ_NOEXIST) { 14907c478bd9Sstevel@tonic-gate err = ENOENT; 14917c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & RTC_OBJ_ALTER) && 14927c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && (lml == &lml_main)) { 14937c478bd9Sstevel@tonic-gate int ret; 14947c478bd9Sstevel@tonic-gate 14957c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 14967c478bd9Sstevel@tonic-gate /* 14977c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. If 14987c478bd9Sstevel@tonic-gate * this fails, and the alternative is flagged 14997c478bd9Sstevel@tonic-gate * as optional, fall through to open the 15007c478bd9Sstevel@tonic-gate * original path. 15017c478bd9Sstevel@tonic-gate */ 15025aefb655Srie DBG_CALL(Dbg_libs_found(lml, aname, 15035aefb655Srie FLG_FD_ALTER)); 15047c478bd9Sstevel@tonic-gate if (((ret = file_open(0, lml, oname, aname, 15059aa23310Srie clmp, flags, fdesc, rej, in_nfavl)) != 0) || 15067c478bd9Sstevel@tonic-gate ((obj->co_flags & RTC_OBJ_OPTINAL) == 0)) 15077c478bd9Sstevel@tonic-gate return (ret); 15087c478bd9Sstevel@tonic-gate 15097c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 15107c478bd9Sstevel@tonic-gate } 15117c478bd9Sstevel@tonic-gate } 15127c478bd9Sstevel@tonic-gate } 15135aefb655Srie DBG_CALL(Dbg_libs_found(lml, oname, 0)); 15149aa23310Srie return (file_open(err, lml, oname, oname, clmp, flags, fdesc, 15159aa23310Srie rej, in_nfavl)); 15167c478bd9Sstevel@tonic-gate } 15177c478bd9Sstevel@tonic-gate 15187c478bd9Sstevel@tonic-gate /* 15197c478bd9Sstevel@tonic-gate * Find a simple filename (it doesn't contain a "/"). 15207c478bd9Sstevel@tonic-gate */ 15217c478bd9Sstevel@tonic-gate static int 15227c478bd9Sstevel@tonic-gate _find_file(Lm_list *lml, const char *oname, const char *nname, Rt_map *clmp, 15239aa23310Srie uint_t flags, Fdesc *fdesc, Rej_desc *rej, Pnode *dir, int aflag, 15249aa23310Srie int *in_nfavl) 15257c478bd9Sstevel@tonic-gate { 15265aefb655Srie DBG_CALL(Dbg_libs_found(lml, nname, aflag)); 15277c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_SEARCH) && 15287c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 15297c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_PTH_TRYING), nname, aflag ? 15307c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_ALTER) : MSG_ORIG(MSG_STR_EMPTY)); 15317c478bd9Sstevel@tonic-gate } 15327c478bd9Sstevel@tonic-gate 15337c478bd9Sstevel@tonic-gate /* 15347c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're about 15357c478bd9Sstevel@tonic-gate * to go search for. The audit library may offer an alternative 15367c478bd9Sstevel@tonic-gate * dependency, or indicate that this dependency should be ignored. 15377c478bd9Sstevel@tonic-gate */ 15387c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 15399aa23310Srie char *aname; 15407c478bd9Sstevel@tonic-gate 15419aa23310Srie if ((aname = audit_objsearch(clmp, nname, 15429aa23310Srie (dir->p_orig & LA_SER_MASK))) == 0) { 15437247f888Srie DBG_CALL(Dbg_audit_terminate(lml, nname)); 15447c478bd9Sstevel@tonic-gate return (0); 15457247f888Srie } 15467247f888Srie 15477247f888Srie /* 15487247f888Srie * Protect ourselves from auditor mischief, by copying any 15497247f888Srie * alternative name over the present name (the present name is 15507247f888Srie * maintained in a static buffer - see elf_get_so()); 15517247f888Srie */ 15527247f888Srie if (nname != aname) 15537247f888Srie (void) strncpy((char *)nname, aname, PATH_MAX); 15547c478bd9Sstevel@tonic-gate } 15559aa23310Srie return (file_open(0, lml, oname, nname, clmp, flags, fdesc, 15569aa23310Srie rej, in_nfavl)); 15577c478bd9Sstevel@tonic-gate } 15587c478bd9Sstevel@tonic-gate 1559390b98b5Srie static int 15607c478bd9Sstevel@tonic-gate find_file(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 15619aa23310Srie Fdesc *fdesc, Rej_desc *rej, Pnode *dir, Word * strhash, size_t olen, 15629aa23310Srie int *in_nfavl) 15637c478bd9Sstevel@tonic-gate { 15647c478bd9Sstevel@tonic-gate static Rtc_obj Obj = { 0 }; 1565aa736cbeSrie Rtc_obj *dobj; 15667c478bd9Sstevel@tonic-gate const char *nname = oname; 15677c478bd9Sstevel@tonic-gate 15687c478bd9Sstevel@tonic-gate if (dir->p_name == 0) 15697c478bd9Sstevel@tonic-gate return (0); 15707c478bd9Sstevel@tonic-gate if (dir->p_info) { 15717c478bd9Sstevel@tonic-gate dobj = (Rtc_obj *)dir->p_info; 15727c478bd9Sstevel@tonic-gate if ((dobj->co_flags & 15737c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 15747c478bd9Sstevel@tonic-gate return (0); 15757c478bd9Sstevel@tonic-gate } else 15767c478bd9Sstevel@tonic-gate dobj = 0; 15777c478bd9Sstevel@tonic-gate 15787c478bd9Sstevel@tonic-gate /* 15797c478bd9Sstevel@tonic-gate * If configuration information exists see if this directory/file 15807c478bd9Sstevel@tonic-gate * combination exists. 15817c478bd9Sstevel@tonic-gate */ 15827c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_DIRCFG) && 15837c478bd9Sstevel@tonic-gate ((dobj == 0) || (dobj->co_id != 0))) { 15847c478bd9Sstevel@tonic-gate Rtc_obj *fobj; 15857c478bd9Sstevel@tonic-gate const char *alt = 0; 15867c478bd9Sstevel@tonic-gate 15877c478bd9Sstevel@tonic-gate /* 15887c478bd9Sstevel@tonic-gate * If this pnode has not yet been searched for in the 15897c478bd9Sstevel@tonic-gate * configuration file go find it. 15907c478bd9Sstevel@tonic-gate */ 15917c478bd9Sstevel@tonic-gate if (dobj == 0) { 15927c478bd9Sstevel@tonic-gate dobj = elf_config_ent(dir->p_name, 15937c478bd9Sstevel@tonic-gate (Word)elf_hash(dir->p_name), 0, 0); 15947c478bd9Sstevel@tonic-gate if (dobj == 0) 15957c478bd9Sstevel@tonic-gate dobj = &Obj; 15967c478bd9Sstevel@tonic-gate dir->p_info = (void *)dobj; 15977c478bd9Sstevel@tonic-gate 15987c478bd9Sstevel@tonic-gate if ((dobj->co_flags & (RTC_OBJ_NOEXIST | 15997c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 16007c478bd9Sstevel@tonic-gate return (0); 16017c478bd9Sstevel@tonic-gate } 16027c478bd9Sstevel@tonic-gate 16037c478bd9Sstevel@tonic-gate /* 16047c478bd9Sstevel@tonic-gate * If we found a directory search for the file. 16057c478bd9Sstevel@tonic-gate */ 16067c478bd9Sstevel@tonic-gate if (dobj->co_id != 0) { 16077c478bd9Sstevel@tonic-gate if (*strhash == 0) 16087c478bd9Sstevel@tonic-gate *strhash = (Word)elf_hash(nname); 16097c478bd9Sstevel@tonic-gate fobj = elf_config_ent(nname, *strhash, 16107c478bd9Sstevel@tonic-gate dobj->co_id, &alt); 16117c478bd9Sstevel@tonic-gate 16127c478bd9Sstevel@tonic-gate /* 16137c478bd9Sstevel@tonic-gate * If this object specifically does not exist, or the 16147c478bd9Sstevel@tonic-gate * object can't be found in a know-all-entries 16157c478bd9Sstevel@tonic-gate * directory, continue looking. If the object does 16167c478bd9Sstevel@tonic-gate * exist determine if an alternative object exists. 16177c478bd9Sstevel@tonic-gate */ 16187c478bd9Sstevel@tonic-gate if (fobj == 0) { 16197c478bd9Sstevel@tonic-gate if (dobj->co_flags & RTC_OBJ_ALLENTS) 16207c478bd9Sstevel@tonic-gate return (0); 16217c478bd9Sstevel@tonic-gate } else { 16227c478bd9Sstevel@tonic-gate if ((fobj->co_flags & (RTC_OBJ_NOEXIST | 16237c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 16247c478bd9Sstevel@tonic-gate return (0); 16257c478bd9Sstevel@tonic-gate 16267c478bd9Sstevel@tonic-gate if ((fobj->co_flags & RTC_OBJ_ALTER) && 16277c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && 16287c478bd9Sstevel@tonic-gate (lml == &lml_main)) { 16297c478bd9Sstevel@tonic-gate int ret; 16307c478bd9Sstevel@tonic-gate 16317c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 16327c478bd9Sstevel@tonic-gate /* 16337c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. 16347c478bd9Sstevel@tonic-gate * If this fails, and the alternative is 16357c478bd9Sstevel@tonic-gate * flagged as optional, fall through to 16367c478bd9Sstevel@tonic-gate * open the original path. 16377c478bd9Sstevel@tonic-gate */ 16387c478bd9Sstevel@tonic-gate ret = _find_file(lml, oname, alt, clmp, 16399aa23310Srie flags, fdesc, rej, dir, 1, 16409aa23310Srie in_nfavl); 16417c478bd9Sstevel@tonic-gate if (ret || ((fobj->co_flags & 16427c478bd9Sstevel@tonic-gate RTC_OBJ_OPTINAL) == 0)) 16437c478bd9Sstevel@tonic-gate return (ret); 16447c478bd9Sstevel@tonic-gate 16457c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 16467c478bd9Sstevel@tonic-gate } 16477c478bd9Sstevel@tonic-gate } 16487c478bd9Sstevel@tonic-gate } 16497c478bd9Sstevel@tonic-gate } 16507c478bd9Sstevel@tonic-gate 16517c478bd9Sstevel@tonic-gate /* 16527c478bd9Sstevel@tonic-gate * Protect ourselves from building an invalid pathname. 16537c478bd9Sstevel@tonic-gate */ 16547c478bd9Sstevel@tonic-gate if ((olen + dir->p_len + 1) >= PATH_MAX) { 16555aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), nname, 16567c478bd9Sstevel@tonic-gate strerror(ENAMETOOLONG)); 16577c478bd9Sstevel@tonic-gate return (0); 16587c478bd9Sstevel@tonic-gate } 16597c478bd9Sstevel@tonic-gate if ((nname = (LM_GET_SO(clmp)(dir->p_name, nname))) == 0) 16607c478bd9Sstevel@tonic-gate return (0); 16617c478bd9Sstevel@tonic-gate 16629aa23310Srie return (_find_file(lml, oname, nname, clmp, flags, fdesc, rej, 16639aa23310Srie dir, 0, in_nfavl)); 16647c478bd9Sstevel@tonic-gate } 16657c478bd9Sstevel@tonic-gate 16667c478bd9Sstevel@tonic-gate /* 16677c478bd9Sstevel@tonic-gate * A unique file has been opened. Create a link-map to represent it, and 16687c478bd9Sstevel@tonic-gate * process the various names by which it can be referenced. 16697c478bd9Sstevel@tonic-gate */ 16707c478bd9Sstevel@tonic-gate static Rt_map * 16719aa23310Srie load_file(Lm_list *lml, Aliste lmco, Fdesc *fdesc, int *in_nfavl) 16727c478bd9Sstevel@tonic-gate { 16737c478bd9Sstevel@tonic-gate const char *oname = fdesc->fd_oname; 16747c478bd9Sstevel@tonic-gate const char *nname = fdesc->fd_nname; 16757c478bd9Sstevel@tonic-gate Rt_map *nlmp; 16767c478bd9Sstevel@tonic-gate 16777c478bd9Sstevel@tonic-gate /* 16787c478bd9Sstevel@tonic-gate * Typically we call fct_map_so() with the full pathname of the opened 16797c478bd9Sstevel@tonic-gate * file (nname) and the name that started the search (oname), thus for 16807c478bd9Sstevel@tonic-gate * a typical dependency on libc this would be /usr/lib/libc.so.1 and 16817c478bd9Sstevel@tonic-gate * libc.so.1 (DT_NEEDED). The original name is maintained on an ALIAS 16827c478bd9Sstevel@tonic-gate * list for comparison when bringing in new dependencies. If the user 16837c478bd9Sstevel@tonic-gate * specified name as a full path (from a dlopen() for example) then 16847c478bd9Sstevel@tonic-gate * there's no need to create an ALIAS. 16857c478bd9Sstevel@tonic-gate */ 16867c478bd9Sstevel@tonic-gate if (strcmp(oname, nname) == 0) 16877c478bd9Sstevel@tonic-gate oname = 0; 16887c478bd9Sstevel@tonic-gate 16897c478bd9Sstevel@tonic-gate /* 16907c478bd9Sstevel@tonic-gate * A new file has been opened, now map it into the process. Close the 16917c478bd9Sstevel@tonic-gate * original file so as not to accumulate file descriptors. 16927c478bd9Sstevel@tonic-gate */ 16937c478bd9Sstevel@tonic-gate nlmp = ((fdesc->fd_ftp)->fct_map_so)(lml, lmco, nname, oname, 16949aa23310Srie fdesc->fd_fd, in_nfavl); 16957c478bd9Sstevel@tonic-gate (void) close(fdesc->fd_fd); 16967c478bd9Sstevel@tonic-gate fdesc->fd_fd = 0; 16977c478bd9Sstevel@tonic-gate 16987c478bd9Sstevel@tonic-gate if (nlmp == 0) 16997c478bd9Sstevel@tonic-gate return (0); 17007c478bd9Sstevel@tonic-gate 17017c478bd9Sstevel@tonic-gate /* 17027c478bd9Sstevel@tonic-gate * Save the dev/inode information for later comparisons. 17037c478bd9Sstevel@tonic-gate */ 17047c478bd9Sstevel@tonic-gate STDEV(nlmp) = fdesc->fd_dev; 17057c478bd9Sstevel@tonic-gate STINO(nlmp) = fdesc->fd_ino; 17067c478bd9Sstevel@tonic-gate 17077c478bd9Sstevel@tonic-gate /* 17087c478bd9Sstevel@tonic-gate * Insert the names of this link-map into the FullpathNode AVL tree. 17097c478bd9Sstevel@tonic-gate * Save both the NAME() and PATHNAME() is they differ. 17107c478bd9Sstevel@tonic-gate * 17117c478bd9Sstevel@tonic-gate * If this is an OBJECT file, don't insert it yet as this is only a 17127c478bd9Sstevel@tonic-gate * temporary link-map. During elf_obj_fini() the final link-map is 17137c478bd9Sstevel@tonic-gate * created, and its names will be inserted in the FullpathNode AVL 17147c478bd9Sstevel@tonic-gate * tree at that time. 17157c478bd9Sstevel@tonic-gate */ 17167c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_OBJECT) == 0) { 17177c478bd9Sstevel@tonic-gate /* 17187c478bd9Sstevel@tonic-gate * Update the objects full path information if necessary. 171911a2bb38Srie * Note, with pathname expansion in effect, the fd_pname will 172011a2bb38Srie * be used as PATHNAME(). This allocated string will be freed 172111a2bb38Srie * should this object be deleted. However, without pathname 172211a2bb38Srie * expansion, the fd_name should be freed now, as it is no 172311a2bb38Srie * longer referenced. 17247c478bd9Sstevel@tonic-gate */ 172511a2bb38Srie if (FLAGS1(nlmp) & FL1_RT_RELATIVE) 17267c478bd9Sstevel@tonic-gate (void) fullpath(nlmp, fdesc->fd_pname); 172711a2bb38Srie else if (fdesc->fd_pname != fdesc->fd_nname) 172811a2bb38Srie free((void *)fdesc->fd_pname); 172911a2bb38Srie fdesc->fd_pname = 0; 17307c478bd9Sstevel@tonic-gate 17317c478bd9Sstevel@tonic-gate if ((NAME(nlmp)[0] == '/') && (fpavl_insert(lml, nlmp, 17327c478bd9Sstevel@tonic-gate NAME(nlmp), fdesc->fd_avlwhere) == 0)) { 17337c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 17347c478bd9Sstevel@tonic-gate return (0); 17357c478bd9Sstevel@tonic-gate } 17367c478bd9Sstevel@tonic-gate if (((NAME(nlmp)[0] != '/') || 17377c478bd9Sstevel@tonic-gate (NAME(nlmp) != PATHNAME(nlmp))) && 17387c478bd9Sstevel@tonic-gate (fpavl_insert(lml, nlmp, PATHNAME(nlmp), 0) == 0)) { 17397c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 17407c478bd9Sstevel@tonic-gate return (0); 17417c478bd9Sstevel@tonic-gate } 1742*3dbfc803SRod Evans 1743*3dbfc803SRod Evans /* 1744*3dbfc803SRod Evans * If this is a secure application, record any full path name 1745*3dbfc803SRod Evans * directory in which this dependency has been found. This 1746*3dbfc803SRod Evans * directory can be deemed safe (as we've already found a 1747*3dbfc803SRod Evans * dependency here). This recording provides a fall-back 1748*3dbfc803SRod Evans * should another objects $ORIGIN definition expands to this 1749*3dbfc803SRod Evans * directory, an expansion that would ordinarily be deemed 1750*3dbfc803SRod Evans * insecure. 1751*3dbfc803SRod Evans */ 1752*3dbfc803SRod Evans if (rtld_flags & RT_FL_SECURE) { 1753*3dbfc803SRod Evans if (NAME(nlmp)[0] == '/') 1754*3dbfc803SRod Evans spavl_insert(NAME(nlmp)); 1755*3dbfc803SRod Evans if ((NAME(nlmp) != PATHNAME(nlmp)) && 1756*3dbfc803SRod Evans (PATHNAME(nlmp)[0] == '/')) 1757*3dbfc803SRod Evans spavl_insert(PATHNAME(nlmp)); 1758*3dbfc803SRod Evans } 17597c478bd9Sstevel@tonic-gate } 17607c478bd9Sstevel@tonic-gate 17617c478bd9Sstevel@tonic-gate /* 17627c478bd9Sstevel@tonic-gate * If we're processing an alternative object reset the original name 17637c478bd9Sstevel@tonic-gate * for possible $ORIGIN processing. 17647c478bd9Sstevel@tonic-gate */ 17657c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_ALTER) { 17667c478bd9Sstevel@tonic-gate const char *odir; 17677c478bd9Sstevel@tonic-gate char *ndir; 17687c478bd9Sstevel@tonic-gate size_t olen; 17697c478bd9Sstevel@tonic-gate 17707c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= FLG_RT_ALTER; 17717c478bd9Sstevel@tonic-gate 17727c478bd9Sstevel@tonic-gate /* 17737c478bd9Sstevel@tonic-gate * If we were given a pathname containing a slash then the 17747c478bd9Sstevel@tonic-gate * original name is still in oname. Otherwise the original 17757c478bd9Sstevel@tonic-gate * directory is in dir->p_name (which is all we need for 17767c478bd9Sstevel@tonic-gate * $ORIGIN). 17777c478bd9Sstevel@tonic-gate */ 17787c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_SLASH) { 17797c478bd9Sstevel@tonic-gate char *ofil; 17807c478bd9Sstevel@tonic-gate 17817c478bd9Sstevel@tonic-gate odir = oname; 17827c478bd9Sstevel@tonic-gate ofil = strrchr(oname, '/'); 17837c478bd9Sstevel@tonic-gate olen = ofil - odir + 1; 17847c478bd9Sstevel@tonic-gate } else { 17857c478bd9Sstevel@tonic-gate odir = fdesc->fd_odir; 17867c478bd9Sstevel@tonic-gate olen = strlen(odir) + 1; 17877c478bd9Sstevel@tonic-gate } 17887c478bd9Sstevel@tonic-gate 17897c478bd9Sstevel@tonic-gate if ((ndir = (char *)malloc(olen)) == 0) { 17907c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 17917c478bd9Sstevel@tonic-gate return (0); 17927c478bd9Sstevel@tonic-gate } 17937c478bd9Sstevel@tonic-gate (void) strncpy(ndir, odir, olen); 17947c478bd9Sstevel@tonic-gate ndir[--olen] = '\0'; 17957c478bd9Sstevel@tonic-gate 17967c478bd9Sstevel@tonic-gate ORIGNAME(nlmp) = ndir; 17977c478bd9Sstevel@tonic-gate DIRSZ(nlmp) = olen; 17987c478bd9Sstevel@tonic-gate } 17997c478bd9Sstevel@tonic-gate 18007c478bd9Sstevel@tonic-gate /* 1801390b98b5Srie * Identify this as a new object. 18027c478bd9Sstevel@tonic-gate */ 1803390b98b5Srie FLAGS(nlmp) |= FLG_RT_NEWLOAD; 18047c478bd9Sstevel@tonic-gate 18057c478bd9Sstevel@tonic-gate return (nlmp); 18067c478bd9Sstevel@tonic-gate } 18077c478bd9Sstevel@tonic-gate 18087c478bd9Sstevel@tonic-gate /* 18097c478bd9Sstevel@tonic-gate * This function loads the named file and returns a pointer to its link map. 18107c478bd9Sstevel@tonic-gate * It is assumed that the caller has already checked that the file is not 18117c478bd9Sstevel@tonic-gate * already loaded before calling this function (refer is_so_loaded()). 18127c478bd9Sstevel@tonic-gate * Find and open the file, map it into memory, add it to the end of the list 18137c478bd9Sstevel@tonic-gate * of link maps and return a pointer to the new link map. Return 0 on error. 18147c478bd9Sstevel@tonic-gate */ 18157c478bd9Sstevel@tonic-gate static Rt_map * 18167c478bd9Sstevel@tonic-gate load_so(Lm_list *lml, Aliste lmco, const char *oname, Rt_map *clmp, 18179aa23310Srie uint_t flags, Fdesc *nfdp, Rej_desc *rej, int *in_nfavl) 18187c478bd9Sstevel@tonic-gate { 18197c478bd9Sstevel@tonic-gate char *name; 18207c478bd9Sstevel@tonic-gate uint_t slash = 0; 18217c478bd9Sstevel@tonic-gate size_t olen; 1822fb1354edSrie Fdesc fdesc = { 0 }; 18237c478bd9Sstevel@tonic-gate Pnode *dir; 18247c478bd9Sstevel@tonic-gate 18257c478bd9Sstevel@tonic-gate /* 18267c478bd9Sstevel@tonic-gate * If the file is the run time linker then it's already loaded. 18277c478bd9Sstevel@tonic-gate */ 18287c478bd9Sstevel@tonic-gate if (interp && (strcmp(oname, NAME(lml_rtld.lm_head)) == 0)) 18297c478bd9Sstevel@tonic-gate return (lml_rtld.lm_head); 18307c478bd9Sstevel@tonic-gate 18317c478bd9Sstevel@tonic-gate /* 18328af2c5b9Srie * If this isn't a hardware capabilities pathname, which is already a 18337c478bd9Sstevel@tonic-gate * full, duplicated pathname, determine whether the pathname contains 18347c478bd9Sstevel@tonic-gate * a slash, and if not determine the input filename (for max path 18357c478bd9Sstevel@tonic-gate * length verification). 18367c478bd9Sstevel@tonic-gate */ 18377c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) == 0) { 18387c478bd9Sstevel@tonic-gate const char *str; 18397c478bd9Sstevel@tonic-gate 18407c478bd9Sstevel@tonic-gate for (str = oname; *str; str++) { 18417c478bd9Sstevel@tonic-gate if (*str == '/') { 18427c478bd9Sstevel@tonic-gate slash++; 18437c478bd9Sstevel@tonic-gate break; 18447c478bd9Sstevel@tonic-gate } 18457c478bd9Sstevel@tonic-gate } 18467c478bd9Sstevel@tonic-gate if (slash == 0) 18477c478bd9Sstevel@tonic-gate olen = (str - oname) + 1; 18487c478bd9Sstevel@tonic-gate } 18497c478bd9Sstevel@tonic-gate 18507c478bd9Sstevel@tonic-gate /* 18517c478bd9Sstevel@tonic-gate * If we are passed a 'null' link-map this means that this is the first 18527c478bd9Sstevel@tonic-gate * object to be loaded on this link-map list. In that case we set the 18537c478bd9Sstevel@tonic-gate * link-map to ld.so.1's link-map. 18547c478bd9Sstevel@tonic-gate * 18557c478bd9Sstevel@tonic-gate * This link-map is referenced to determine what lookup rules to use 18567c478bd9Sstevel@tonic-gate * when searching for files. By using ld.so.1's we are defaulting to 18577c478bd9Sstevel@tonic-gate * ELF look-up rules. 18587c478bd9Sstevel@tonic-gate * 18597c478bd9Sstevel@tonic-gate * Note: This case happens when loading the first object onto 18607c478bd9Sstevel@tonic-gate * the plt_tracing link-map. 18617c478bd9Sstevel@tonic-gate */ 18627c478bd9Sstevel@tonic-gate if (clmp == 0) 18637c478bd9Sstevel@tonic-gate clmp = lml_rtld.lm_head; 18647c478bd9Sstevel@tonic-gate 18657c478bd9Sstevel@tonic-gate /* 18667c478bd9Sstevel@tonic-gate * If this path resulted from a $HWCAP specification, then the best 18677c478bd9Sstevel@tonic-gate * hardware capability object has already been establish, and is 18687c478bd9Sstevel@tonic-gate * available in the calling file descriptor. Perform some minor book- 18697c478bd9Sstevel@tonic-gate * keeping so that we can fall through into common code. 18707c478bd9Sstevel@tonic-gate */ 18717c478bd9Sstevel@tonic-gate if (flags & FLG_RT_HWCAP) { 18727c478bd9Sstevel@tonic-gate /* 1873fb1354edSrie * If this object is already loaded, we're done. 18747c478bd9Sstevel@tonic-gate */ 1875fb1354edSrie if (nfdp->fd_lmp) 1876fb1354edSrie return (nfdp->fd_lmp); 18777c478bd9Sstevel@tonic-gate 1878fb1354edSrie /* 1879fb1354edSrie * Obtain the avl index for this object. 1880fb1354edSrie */ 18819aa23310Srie (void) fpavl_recorded(lml, nfdp->fd_nname, 18829aa23310Srie &(nfdp->fd_avlwhere)); 1883bbf522bdSrie 1884fb1354edSrie /* 1885fb1354edSrie * If the name and resolved pathname differ, duplicate the path 18868af2c5b9Srie * name once more to provide for generic cleanup by the caller. 1887fb1354edSrie */ 1888fb1354edSrie if (nfdp->fd_pname && (nfdp->fd_nname != nfdp->fd_pname)) { 1889fb1354edSrie char *pname; 1890bbf522bdSrie 18918521e5e6Srie if ((pname = strdup(nfdp->fd_pname)) == NULL) 1892fb1354edSrie return (0); 1893fb1354edSrie nfdp->fd_pname = pname; 18947c478bd9Sstevel@tonic-gate } 18957c478bd9Sstevel@tonic-gate } else if (slash) { 18967c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 18977c478bd9Sstevel@tonic-gate 1898fb1354edSrie *nfdp = fdesc; 1899fb1354edSrie nfdp->fd_flags = FLG_FD_SLASH; 19007c478bd9Sstevel@tonic-gate 19019aa23310Srie if (find_path(lml, oname, clmp, flags, nfdp, 19029aa23310Srie &_rej, in_nfavl) == 0) { 190331fdd7caSab rejection_inherit(rej, &_rej); 19047c478bd9Sstevel@tonic-gate return (0); 19057c478bd9Sstevel@tonic-gate } 19067c478bd9Sstevel@tonic-gate 19077c478bd9Sstevel@tonic-gate /* 19087c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 19097c478bd9Sstevel@tonic-gate */ 1910fb1354edSrie if (nfdp->fd_lmp) 1911fb1354edSrie return (nfdp->fd_lmp); 19127c478bd9Sstevel@tonic-gate 19137c478bd9Sstevel@tonic-gate } else { 19147c478bd9Sstevel@tonic-gate /* 19157c478bd9Sstevel@tonic-gate * No '/' - for each directory on list, make a pathname using 19167c478bd9Sstevel@tonic-gate * that directory and filename and try to open that file. 19177c478bd9Sstevel@tonic-gate */ 1918fb1354edSrie Pnode *dirlist = (Pnode *)0; 19197c478bd9Sstevel@tonic-gate Word strhash = 0; 1920fb1354edSrie #if !defined(ISSOLOAD_BASENAME_DISABLED) 1921fb1354edSrie Rt_map *nlmp; 1922fb1354edSrie #endif 19235aefb655Srie DBG_CALL(Dbg_libs_find(lml, oname)); 19247c478bd9Sstevel@tonic-gate 19257c478bd9Sstevel@tonic-gate #if !defined(ISSOLOAD_BASENAME_DISABLED) 19269aa23310Srie if ((nlmp = is_so_loaded(lml, oname, in_nfavl))) 19277c478bd9Sstevel@tonic-gate return (nlmp); 19287c478bd9Sstevel@tonic-gate #endif 19297c478bd9Sstevel@tonic-gate /* 19307c478bd9Sstevel@tonic-gate * Make sure we clear the file descriptor new name in case the 19317c478bd9Sstevel@tonic-gate * following directory search doesn't provide any directories 19327c478bd9Sstevel@tonic-gate * (odd, but this can be forced with a -znodefaultlib test). 19337c478bd9Sstevel@tonic-gate */ 1934fb1354edSrie *nfdp = fdesc; 19357c478bd9Sstevel@tonic-gate for (dir = get_next_dir(&dirlist, clmp, flags); dir; 19367c478bd9Sstevel@tonic-gate dir = get_next_dir(&dirlist, clmp, flags)) { 19377c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 19387c478bd9Sstevel@tonic-gate 1939fb1354edSrie *nfdp = fdesc; 19407c478bd9Sstevel@tonic-gate 19419aa23310Srie /* 19429aa23310Srie * Under debugging, duplicate path name entries are 19439aa23310Srie * tagged but remain part of the search path list so 19449aa23310Srie * that they can be diagnosed under "unused" processing. 19459aa23310Srie * Skip these entries, as this path would have already 19469aa23310Srie * been attempted. 19479aa23310Srie */ 19489aa23310Srie if (dir->p_orig & PN_FLG_DUPLICAT) 19499aa23310Srie continue; 19509aa23310Srie 19517c478bd9Sstevel@tonic-gate /* 19527c478bd9Sstevel@tonic-gate * Try and locate this file. Make sure to clean up 19537c478bd9Sstevel@tonic-gate * any rejection information should the file have 19547c478bd9Sstevel@tonic-gate * been found, but not appropriate. 19557c478bd9Sstevel@tonic-gate */ 1956fb1354edSrie if (find_file(lml, oname, clmp, flags, nfdp, &_rej, 19579aa23310Srie dir, &strhash, olen, in_nfavl) == 0) { 195831fdd7caSab rejection_inherit(rej, &_rej); 19597c478bd9Sstevel@tonic-gate continue; 19607c478bd9Sstevel@tonic-gate } 19617c478bd9Sstevel@tonic-gate 19629aa23310Srie /* 19639aa23310Srie * Indicate that this search path has been used. If 19649aa23310Srie * this is an LD_LIBRARY_PATH setting, ignore any use 19659aa23310Srie * by ld.so.1 itself. 19669aa23310Srie */ 19679aa23310Srie if (((dir->p_orig & LA_SER_LIBPATH) == 0) || 19689aa23310Srie ((lml->lm_flags & LML_FLG_RTLDLM) == 0)) 19699aa23310Srie dir->p_orig |= PN_FLG_USED; 19709aa23310Srie 19717c478bd9Sstevel@tonic-gate /* 19727c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 19737c478bd9Sstevel@tonic-gate */ 1974fb1354edSrie if (nfdp->fd_lmp) 1975fb1354edSrie return (nfdp->fd_lmp); 19767c478bd9Sstevel@tonic-gate 1977fb1354edSrie nfdp->fd_odir = dir->p_name; 19787c478bd9Sstevel@tonic-gate break; 19797c478bd9Sstevel@tonic-gate } 19807c478bd9Sstevel@tonic-gate 19817c478bd9Sstevel@tonic-gate /* 19827c478bd9Sstevel@tonic-gate * If the file couldn't be loaded, do another comparison of 19837c478bd9Sstevel@tonic-gate * loaded files using just the basename. This catches folks 19847c478bd9Sstevel@tonic-gate * who may have loaded multiple full pathname files (possibly 19857c478bd9Sstevel@tonic-gate * from setxid applications) to satisfy dependency relationships 19867c478bd9Sstevel@tonic-gate * (i.e., a file might have a dependency on foo.so.1 which has 19877c478bd9Sstevel@tonic-gate * already been opened using its full pathname). 19887c478bd9Sstevel@tonic-gate */ 19898521e5e6Srie if (nfdp->fd_nname == NULL) 19909aa23310Srie return (is_so_loaded(lml, oname, in_nfavl)); 19917c478bd9Sstevel@tonic-gate } 19927c478bd9Sstevel@tonic-gate 19937c478bd9Sstevel@tonic-gate /* 19947c478bd9Sstevel@tonic-gate * Duplicate the file name so that NAME() is available in core files. 19957c478bd9Sstevel@tonic-gate * Note, that hardware capability names are already duplicated, but 19967c478bd9Sstevel@tonic-gate * they get duplicated once more to insure consistent cleanup in the 19977c478bd9Sstevel@tonic-gate * event of an error condition. 19987c478bd9Sstevel@tonic-gate */ 19998521e5e6Srie if ((name = strdup(nfdp->fd_nname)) == NULL) 20007c478bd9Sstevel@tonic-gate return (0); 2001fb1354edSrie 2002fb1354edSrie if (nfdp->fd_nname == nfdp->fd_pname) 2003fb1354edSrie nfdp->fd_nname = nfdp->fd_pname = name; 20047c478bd9Sstevel@tonic-gate else 2005fb1354edSrie nfdp->fd_nname = name; 20067c478bd9Sstevel@tonic-gate 20077c478bd9Sstevel@tonic-gate /* 20087c478bd9Sstevel@tonic-gate * Finish mapping the file and return the link-map descriptor. Note, 20097c478bd9Sstevel@tonic-gate * if this request originated from a HWCAP request, re-establish the 20107c478bd9Sstevel@tonic-gate * fdesc information. For single paged objects, such as filters, the 20117c478bd9Sstevel@tonic-gate * original mapping may have been sufficient to capture the file, thus 20127c478bd9Sstevel@tonic-gate * this mapping needs to be reset to insure it doesn't mistakenly get 20137c478bd9Sstevel@tonic-gate * unmapped as part of HWCAP cleanup. 20147c478bd9Sstevel@tonic-gate */ 20159aa23310Srie return (load_file(lml, lmco, nfdp, in_nfavl)); 20167c478bd9Sstevel@tonic-gate } 20177c478bd9Sstevel@tonic-gate 20187c478bd9Sstevel@tonic-gate /* 20197c478bd9Sstevel@tonic-gate * Trace an attempt to load an object. 20207c478bd9Sstevel@tonic-gate */ 20217247f888Srie int 20227247f888Srie load_trace(Lm_list *lml, const char **oname, Rt_map *clmp) 20237c478bd9Sstevel@tonic-gate { 20247247f888Srie const char *name = *oname; 20257247f888Srie 20267c478bd9Sstevel@tonic-gate /* 20277c478bd9Sstevel@tonic-gate * First generate any ldd(1) diagnostics. 20287c478bd9Sstevel@tonic-gate */ 20297c478bd9Sstevel@tonic-gate if ((lml->lm_flags & (LML_FLG_TRC_VERBOSE | LML_FLG_TRC_SEARCH)) && 20307c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) 20317c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, NAME(clmp)); 20327c478bd9Sstevel@tonic-gate 20337c478bd9Sstevel@tonic-gate /* 20347c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're 20357c478bd9Sstevel@tonic-gate * about to go search for. 20367c478bd9Sstevel@tonic-gate */ 20377c478bd9Sstevel@tonic-gate if (((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_ACTIVITY) && 20387c478bd9Sstevel@tonic-gate (lml == LIST(clmp))) 20397c478bd9Sstevel@tonic-gate audit_activity(clmp, LA_ACT_ADD); 20407c478bd9Sstevel@tonic-gate 20417c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 20427247f888Srie char *aname = audit_objsearch(clmp, name, LA_SER_ORIG); 20437c478bd9Sstevel@tonic-gate 20447c478bd9Sstevel@tonic-gate /* 20457c478bd9Sstevel@tonic-gate * The auditor can indicate that this object should be ignored. 20467c478bd9Sstevel@tonic-gate */ 20477247f888Srie if (aname == NULL) { 20487247f888Srie DBG_CALL(Dbg_audit_terminate(lml, name)); 20497c478bd9Sstevel@tonic-gate return (0); 20507c478bd9Sstevel@tonic-gate } 20517c478bd9Sstevel@tonic-gate 20527c478bd9Sstevel@tonic-gate /* 20537247f888Srie * Protect ourselves from auditor mischief, by duplicating any 20547247f888Srie * alternative name. The original name has been allocated from 20557247f888Srie * expand(), so free this allocation before using the audit 20567247f888Srie * alternative. 20577c478bd9Sstevel@tonic-gate */ 20587247f888Srie if (name != aname) { 20597247f888Srie if ((aname = strdup(aname)) == NULL) { 20607247f888Srie eprintf(lml, ERR_FATAL, 20617247f888Srie MSG_INTL(MSG_GEN_AUDITERM), name); 20627247f888Srie return (0); 20637247f888Srie } 20647247f888Srie free((void *)*oname); 20657247f888Srie *oname = aname; 20667c478bd9Sstevel@tonic-gate } 20677c478bd9Sstevel@tonic-gate } 20687247f888Srie return (1); 20697c478bd9Sstevel@tonic-gate } 20707c478bd9Sstevel@tonic-gate 20717c478bd9Sstevel@tonic-gate /* 20727c478bd9Sstevel@tonic-gate * Having loaded an object and created a link-map to describe it, finish 20737c478bd9Sstevel@tonic-gate * processing this stage, including verifying any versioning requirements, 20747c478bd9Sstevel@tonic-gate * updating the objects mode, creating a handle if necessary, and adding this 20757c478bd9Sstevel@tonic-gate * object to existing handles if required. 20767c478bd9Sstevel@tonic-gate */ 2077390b98b5Srie static int 2078fb1354edSrie load_finish(Lm_list *lml, const char *name, Rt_map *clmp, int nmode, 2079fb1354edSrie uint_t flags, Grp_hdl **hdl, Rt_map *nlmp) 20807c478bd9Sstevel@tonic-gate { 2081cce0e03bSab Aliste idx; 2082cce0e03bSab Grp_hdl *ghp; 20837c478bd9Sstevel@tonic-gate int promote; 20847c478bd9Sstevel@tonic-gate 20857c478bd9Sstevel@tonic-gate /* 20867c478bd9Sstevel@tonic-gate * If this dependency is associated with a required version insure that 20877c478bd9Sstevel@tonic-gate * the version is present in the loaded file. 20887c478bd9Sstevel@tonic-gate */ 20897c478bd9Sstevel@tonic-gate if (((rtld_flags & RT_FL_NOVERSION) == 0) && 20907c478bd9Sstevel@tonic-gate (FCT(clmp) == &elf_fct) && VERNEED(clmp) && 20917c478bd9Sstevel@tonic-gate (LM_VERIFY_VERS(clmp)(name, clmp, nlmp) == 0)) 20927c478bd9Sstevel@tonic-gate return (0); 20937c478bd9Sstevel@tonic-gate 20947c478bd9Sstevel@tonic-gate /* 20957c478bd9Sstevel@tonic-gate * If this object has indicated that it should be isolated as a group 20967c478bd9Sstevel@tonic-gate * (DT_FLAGS_1 contains DF_1_GROUP - object was built with -B group), 20977c478bd9Sstevel@tonic-gate * or if the callers direct bindings indicate it should be isolated as 20987c478bd9Sstevel@tonic-gate * a group (DYNINFO flags contains FLG_DI_GROUP - dependency followed 20997c478bd9Sstevel@tonic-gate * -zgroupperm), establish the appropriate mode. 21007c478bd9Sstevel@tonic-gate * 21017c478bd9Sstevel@tonic-gate * The intent of an object defining itself as a group is to isolate the 21027c478bd9Sstevel@tonic-gate * relocation of the group within its own members, however, unless 21037c478bd9Sstevel@tonic-gate * opened through dlopen(), in which case we assume dlsym() will be used 21047c478bd9Sstevel@tonic-gate * to located symbols in the new object, we still need to associate it 21057c478bd9Sstevel@tonic-gate * with the caller for it to be bound with. This is equivalent to a 21067c478bd9Sstevel@tonic-gate * dlopen(RTLD_GROUP) and dlsym() using the returned handle. 21077c478bd9Sstevel@tonic-gate */ 21087c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) | flags) & FLG_RT_SETGROUP) { 21097c478bd9Sstevel@tonic-gate nmode &= ~RTLD_WORLD; 21107c478bd9Sstevel@tonic-gate nmode |= RTLD_GROUP; 21117c478bd9Sstevel@tonic-gate 21127c478bd9Sstevel@tonic-gate /* 21137c478bd9Sstevel@tonic-gate * If the object wasn't explicitly dlopen()'ed associate it with 21147c478bd9Sstevel@tonic-gate * the parent. 21157c478bd9Sstevel@tonic-gate */ 21169a411307Srie if ((flags & FLG_RT_HANDLE) == 0) 21177c478bd9Sstevel@tonic-gate nmode |= RTLD_PARENT; 21187c478bd9Sstevel@tonic-gate } 21197c478bd9Sstevel@tonic-gate 21207c478bd9Sstevel@tonic-gate /* 21217c478bd9Sstevel@tonic-gate * Establish new mode and flags. 21227c478bd9Sstevel@tonic-gate * 21237c478bd9Sstevel@tonic-gate * For patch backward compatibility, the following use of update_mode() 21247c478bd9Sstevel@tonic-gate * is disabled. 21257c478bd9Sstevel@tonic-gate */ 21267c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 21277c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 21287c478bd9Sstevel@tonic-gate promote = MODE(nlmp) |= 21297c478bd9Sstevel@tonic-gate (nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST)); 21307c478bd9Sstevel@tonic-gate else 21317c478bd9Sstevel@tonic-gate #endif 21327c478bd9Sstevel@tonic-gate promote = update_mode(nlmp, MODE(nlmp), nmode); 21337c478bd9Sstevel@tonic-gate 21347c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= flags; 21357c478bd9Sstevel@tonic-gate 21362926dd2eSrie /* 21372926dd2eSrie * If this is a global object, ensure the associated link-map list can 21382926dd2eSrie * be rescanned for global, lazy dependencies. 21392926dd2eSrie */ 21402926dd2eSrie if (MODE(nlmp) & RTLD_GLOBAL) 21412926dd2eSrie LIST(nlmp)->lm_flags &= ~LML_FLG_NOPENDGLBLAZY; 21422926dd2eSrie 21437c478bd9Sstevel@tonic-gate /* 21447c478bd9Sstevel@tonic-gate * If we've been asked to establish a handle create one for this object. 21457c478bd9Sstevel@tonic-gate * Or, if this object has already been analyzed, but this reference 21467c478bd9Sstevel@tonic-gate * requires that the mode of the object be promoted, also create a 21477c478bd9Sstevel@tonic-gate * handle to propagate the new modes to all this objects dependencies. 21487c478bd9Sstevel@tonic-gate */ 21497c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) | flags) & FLG_RT_HANDLE) || (promote && 21507c478bd9Sstevel@tonic-gate (FLAGS(nlmp) & FLG_RT_ANALYZED))) { 21518af2c5b9Srie uint_t oflags, hflags = 0, cdflags; 21527c478bd9Sstevel@tonic-gate 21538af2c5b9Srie /* 21548af2c5b9Srie * Establish any flags for the handle (Grp_hdl). 21558af2c5b9Srie * 21568af2c5b9Srie * . Use of the RTLD_FIRST flag indicates that only the first 21578af2c5b9Srie * dependency on the handle (the new object) can be used 21588af2c5b9Srie * to satisfy dlsym() requests. 21598af2c5b9Srie */ 21607c478bd9Sstevel@tonic-gate if (nmode & RTLD_FIRST) 21618af2c5b9Srie hflags = GPH_FIRST; 21628af2c5b9Srie 21638af2c5b9Srie /* 21648af2c5b9Srie * Establish the flags for this callers dependency descriptor 21658af2c5b9Srie * (Grp_desc). 21668af2c5b9Srie * 21678af2c5b9Srie * . The creation of a handle associated a descriptor for the 21688af2c5b9Srie * new object and descriptor for the parent (caller). 21698af2c5b9Srie * Typically, the handle is created for dlopen() or for 21708af2c5b9Srie * filtering. A handle may also be created to promote 21718af2c5b9Srie * the callers modes (RTLD_NOW) to the new object. In this 21728af2c5b9Srie * latter case, the handle/descriptor are torn down once 21738af2c5b9Srie * the mode propagation has occurred. 21748af2c5b9Srie * 21758af2c5b9Srie * . Use of the RTLD_PARENT flag indicates that the parent 21768af2c5b9Srie * can be relocated against. 21778af2c5b9Srie */ 21788af2c5b9Srie if (((FLAGS(nlmp) | flags) & FLG_RT_HANDLE) == 0) 21798af2c5b9Srie cdflags = GPD_PROMOTE; 21808af2c5b9Srie else 21818af2c5b9Srie cdflags = GPD_PARENT; 21828af2c5b9Srie if (nmode & RTLD_PARENT) 21838af2c5b9Srie cdflags |= GPD_RELOC; 21847c478bd9Sstevel@tonic-gate 21857c478bd9Sstevel@tonic-gate /* 21867c478bd9Sstevel@tonic-gate * Now that a handle is being created, remove this state from 21877c478bd9Sstevel@tonic-gate * the object so that it doesn't mistakenly get inherited by 21887c478bd9Sstevel@tonic-gate * a dependency. 21897c478bd9Sstevel@tonic-gate */ 21907c478bd9Sstevel@tonic-gate oflags = FLAGS(nlmp); 21917c478bd9Sstevel@tonic-gate FLAGS(nlmp) &= ~FLG_RT_HANDLE; 21927c478bd9Sstevel@tonic-gate 21938af2c5b9Srie DBG_CALL(Dbg_file_hdl_title(DBG_HDL_ADD)); 21948af2c5b9Srie if ((ghp = hdl_create(lml, nlmp, clmp, hflags, 21958af2c5b9Srie (GPD_DLSYM | GPD_RELOC | GPD_ADDEPS), cdflags)) == 0) 21967c478bd9Sstevel@tonic-gate return (0); 21977c478bd9Sstevel@tonic-gate 21987c478bd9Sstevel@tonic-gate /* 21997c478bd9Sstevel@tonic-gate * Add any dependencies that are already loaded, to the handle. 22007c478bd9Sstevel@tonic-gate */ 220102ca3e02Srie if (hdl_initialize(ghp, nlmp, nmode, promote) == 0) 22027c478bd9Sstevel@tonic-gate return (0); 22037c478bd9Sstevel@tonic-gate 22047c478bd9Sstevel@tonic-gate if (hdl) 22057c478bd9Sstevel@tonic-gate *hdl = ghp; 22067c478bd9Sstevel@tonic-gate 22077c478bd9Sstevel@tonic-gate /* 22088af2c5b9Srie * If we were asked to create a handle, we're done. 22097c478bd9Sstevel@tonic-gate */ 22107c478bd9Sstevel@tonic-gate if ((oflags | flags) & FLG_RT_HANDLE) 22117c478bd9Sstevel@tonic-gate return (1); 22127c478bd9Sstevel@tonic-gate 22138af2c5b9Srie /* 22148af2c5b9Srie * If the handle was created to promote modes from the parent 22158af2c5b9Srie * (caller) to the new object, then this relationship needs to 22168af2c5b9Srie * be removed to ensure the handle doesn't prevent the new 22178af2c5b9Srie * objects from being deleted if required. If the parent is 22188af2c5b9Srie * the only dependency on the handle, then the handle can be 22198af2c5b9Srie * completely removed. However, the handle may have already 22208af2c5b9Srie * existed, in which case only the parent descriptor can be 22218af2c5b9Srie * deleted from the handle, or at least the GPD_PROMOTE flag 22228af2c5b9Srie * removed from the descriptor. 22238af2c5b9Srie * 22248af2c5b9Srie * Fall through to carry out any group processing. 22258af2c5b9Srie */ 22268af2c5b9Srie free_hdl(ghp, clmp, GPD_PROMOTE); 22277c478bd9Sstevel@tonic-gate } 22287c478bd9Sstevel@tonic-gate 22297c478bd9Sstevel@tonic-gate /* 22307c478bd9Sstevel@tonic-gate * If the caller isn't part of a group we're done. 22317c478bd9Sstevel@tonic-gate */ 2232cce0e03bSab if (GROUPS(clmp) == NULL) 22337c478bd9Sstevel@tonic-gate return (1); 22347c478bd9Sstevel@tonic-gate 22357c478bd9Sstevel@tonic-gate /* 22367c478bd9Sstevel@tonic-gate * Determine if our caller is already associated with a handle, if so 22377c478bd9Sstevel@tonic-gate * we need to add this object to any handles that already exist. 22387c478bd9Sstevel@tonic-gate * Traverse the list of groups our caller is a member of and add this 22397c478bd9Sstevel@tonic-gate * new link-map to those groups. 22407c478bd9Sstevel@tonic-gate */ 22418af2c5b9Srie DBG_CALL(Dbg_file_hdl_title(DBG_HDL_ADD)); 2242cce0e03bSab for (APLIST_TRAVERSE(GROUPS(clmp), idx, ghp)) { 2243cce0e03bSab Aliste idx1; 22447c478bd9Sstevel@tonic-gate Grp_desc *gdp; 22457c478bd9Sstevel@tonic-gate int exist; 2246cce0e03bSab Rt_map *dlmp1; 2247cce0e03bSab APlist *lmalp = NULL; 22487c478bd9Sstevel@tonic-gate 22497c478bd9Sstevel@tonic-gate /* 22507c478bd9Sstevel@tonic-gate * If the caller doesn't indicate that its dependencies should 22517c478bd9Sstevel@tonic-gate * be added to a handle, ignore it. This case identifies a 22527c478bd9Sstevel@tonic-gate * parent of a dlopen(RTLD_PARENT) request. 22537c478bd9Sstevel@tonic-gate */ 2254cce0e03bSab for (ALIST_TRAVERSE(ghp->gh_depends, idx1, gdp)) { 22557c478bd9Sstevel@tonic-gate if (gdp->gd_depend == clmp) 22567c478bd9Sstevel@tonic-gate break; 22577c478bd9Sstevel@tonic-gate } 22587c478bd9Sstevel@tonic-gate if ((gdp->gd_flags & GPD_ADDEPS) == 0) 22597c478bd9Sstevel@tonic-gate continue; 22607c478bd9Sstevel@tonic-gate 22617c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, nlmp, 2262efb9e8b8Srie (GPD_DLSYM | GPD_RELOC | GPD_ADDEPS))) == 0) 22637c478bd9Sstevel@tonic-gate return (0); 22647c478bd9Sstevel@tonic-gate 22657c478bd9Sstevel@tonic-gate /* 22667c478bd9Sstevel@tonic-gate * If this member already exists then its dependencies will 22677c478bd9Sstevel@tonic-gate * have already been processed. 22687c478bd9Sstevel@tonic-gate */ 22697c478bd9Sstevel@tonic-gate if (exist == ALE_EXISTS) 22707c478bd9Sstevel@tonic-gate continue; 22717c478bd9Sstevel@tonic-gate 22727c478bd9Sstevel@tonic-gate /* 22737c478bd9Sstevel@tonic-gate * If the object we've added has just been opened, it will not 22747c478bd9Sstevel@tonic-gate * yet have been processed for its dependencies, these will be 22757c478bd9Sstevel@tonic-gate * added on later calls to load_one(). If it doesn't have any 22767c478bd9Sstevel@tonic-gate * dependencies we're also done. 22777c478bd9Sstevel@tonic-gate */ 22787c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) || 2279cce0e03bSab (DEPENDS(nlmp) == NULL)) 22807c478bd9Sstevel@tonic-gate continue; 22817c478bd9Sstevel@tonic-gate 22827c478bd9Sstevel@tonic-gate /* 22837c478bd9Sstevel@tonic-gate * Otherwise, this object exists and has dependencies, so add 22847c478bd9Sstevel@tonic-gate * all of its dependencies to the handle were operating on. 22857c478bd9Sstevel@tonic-gate */ 2286cce0e03bSab if (aplist_append(&lmalp, nlmp, AL_CNT_DEPCLCT) == 0) 22877c478bd9Sstevel@tonic-gate return (0); 22887c478bd9Sstevel@tonic-gate 2289cce0e03bSab for (APLIST_TRAVERSE(lmalp, idx1, dlmp1)) { 2290cce0e03bSab Aliste idx2; 2291cce0e03bSab Bnd_desc *bdp; 22927c478bd9Sstevel@tonic-gate 22937c478bd9Sstevel@tonic-gate /* 22947c478bd9Sstevel@tonic-gate * Add any dependencies of this dependency to the 22957c478bd9Sstevel@tonic-gate * dynamic dependency list so they can be further 22967c478bd9Sstevel@tonic-gate * processed. 22977c478bd9Sstevel@tonic-gate */ 2298cce0e03bSab for (APLIST_TRAVERSE(DEPENDS(dlmp1), idx2, bdp)) { 2299aa736cbeSrie Rt_map *dlmp2 = bdp->b_depend; 23007c478bd9Sstevel@tonic-gate 23017c478bd9Sstevel@tonic-gate if ((bdp->b_flags & BND_NEEDED) == 0) 23027c478bd9Sstevel@tonic-gate continue; 23037c478bd9Sstevel@tonic-gate 2304cce0e03bSab if (aplist_test(&lmalp, dlmp2, 23057c478bd9Sstevel@tonic-gate AL_CNT_DEPCLCT) == 0) { 23067c478bd9Sstevel@tonic-gate free(lmalp); 23077c478bd9Sstevel@tonic-gate return (0); 23087c478bd9Sstevel@tonic-gate } 23097c478bd9Sstevel@tonic-gate } 23107c478bd9Sstevel@tonic-gate 23117c478bd9Sstevel@tonic-gate if (nlmp == dlmp1) 23127c478bd9Sstevel@tonic-gate continue; 23137c478bd9Sstevel@tonic-gate 23147c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, dlmp1, 2315efb9e8b8Srie (GPD_DLSYM | GPD_RELOC | GPD_ADDEPS))) != 0) { 23167247f888Srie if (exist == ALE_CREATE) { 23177247f888Srie (void) update_mode(dlmp1, MODE(dlmp1), 23187247f888Srie nmode); 23197247f888Srie } 23207c478bd9Sstevel@tonic-gate continue; 23217c478bd9Sstevel@tonic-gate } 23227c478bd9Sstevel@tonic-gate free(lmalp); 23237c478bd9Sstevel@tonic-gate return (0); 23247c478bd9Sstevel@tonic-gate } 23257c478bd9Sstevel@tonic-gate free(lmalp); 23267c478bd9Sstevel@tonic-gate } 23277c478bd9Sstevel@tonic-gate return (1); 23287c478bd9Sstevel@tonic-gate } 23297c478bd9Sstevel@tonic-gate 23307c478bd9Sstevel@tonic-gate /* 23317c478bd9Sstevel@tonic-gate * The central routine for loading shared objects. Insures ldd() diagnostics, 23327c478bd9Sstevel@tonic-gate * handles and any other related additions are all done in one place. 23337c478bd9Sstevel@tonic-gate */ 2334fb1354edSrie static Rt_map * 23357247f888Srie _load_path(Lm_list *lml, Aliste lmco, const char **oname, Rt_map *clmp, 23369aa23310Srie int nmode, uint_t flags, Grp_hdl ** hdl, Fdesc *nfdp, Rej_desc *rej, 23379aa23310Srie int *in_nfavl) 23387c478bd9Sstevel@tonic-gate { 23397247f888Srie Rt_map *nlmp; 23407247f888Srie const char *name = *oname; 23417c478bd9Sstevel@tonic-gate 23427c478bd9Sstevel@tonic-gate if ((nmode & RTLD_NOLOAD) == 0) { 23437c478bd9Sstevel@tonic-gate /* 23447c478bd9Sstevel@tonic-gate * If this isn't a noload request attempt to load the file. 23457247f888Srie * Note, the name of the file may be changed by an auditor. 23467c478bd9Sstevel@tonic-gate */ 23477247f888Srie if ((load_trace(lml, oname, clmp)) == 0) 23487c478bd9Sstevel@tonic-gate return (0); 23497c478bd9Sstevel@tonic-gate 23507247f888Srie name = *oname; 23517247f888Srie 23527c478bd9Sstevel@tonic-gate if ((nlmp = load_so(lml, lmco, name, clmp, flags, 23539aa23310Srie nfdp, rej, in_nfavl)) == 0) 23547c478bd9Sstevel@tonic-gate return (0); 23557c478bd9Sstevel@tonic-gate 23567c478bd9Sstevel@tonic-gate /* 23577c478bd9Sstevel@tonic-gate * If we've loaded a library which identifies itself as not 23587c478bd9Sstevel@tonic-gate * being dlopen()'able catch it here. Let non-dlopen()'able 23597c478bd9Sstevel@tonic-gate * objects through under RTLD_CONFGEN as they're only being 23607c478bd9Sstevel@tonic-gate * mapped to be dldump()'ed. 23617c478bd9Sstevel@tonic-gate */ 23627c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_APPLIC) && ((FLAGS(nlmp) & 23637c478bd9Sstevel@tonic-gate (FLG_RT_NOOPEN | FLG_RT_RELOCED)) == FLG_RT_NOOPEN) && 23647c478bd9Sstevel@tonic-gate ((nmode & RTLD_CONFGEN) == 0)) { 23657c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 23667c478bd9Sstevel@tonic-gate 23677c478bd9Sstevel@tonic-gate _rej.rej_name = name; 23687c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 23697c478bd9Sstevel@tonic-gate _rej.rej_str = MSG_INTL(MSG_GEN_NOOPEN); 2370ba2be530Sab DBG_CALL(Dbg_file_rejected(lml, &_rej, M_MACH)); 237131fdd7caSab rejection_inherit(rej, &_rej); 23727c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 23737c478bd9Sstevel@tonic-gate return (0); 23747c478bd9Sstevel@tonic-gate } 23757c478bd9Sstevel@tonic-gate } else { 23767c478bd9Sstevel@tonic-gate /* 23777c478bd9Sstevel@tonic-gate * If it's a NOLOAD request - check to see if the object 23787c478bd9Sstevel@tonic-gate * has already been loaded. 23797c478bd9Sstevel@tonic-gate */ 23807c478bd9Sstevel@tonic-gate /* LINTED */ 23819aa23310Srie if (nlmp = is_so_loaded(lml, name, in_nfavl)) { 23827c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_VERBOSE) && 23837c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 23847c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, 23857247f888Srie NAME(clmp)); 23867247f888Srie /* BEGIN CSTYLED */ 23877c478bd9Sstevel@tonic-gate if (*name == '/') 23887c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 23897c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 23907c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 23917c478bd9Sstevel@tonic-gate else 23927c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 23937c478bd9Sstevel@tonic-gate name, NAME(nlmp), 23947c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 23957c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 23967247f888Srie /* END CSTYLED */ 23977c478bd9Sstevel@tonic-gate } 23987c478bd9Sstevel@tonic-gate } else { 23997c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 24007c478bd9Sstevel@tonic-gate 24017c478bd9Sstevel@tonic-gate _rej.rej_name = name; 24027c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 24037c478bd9Sstevel@tonic-gate _rej.rej_str = strerror(ENOENT); 2404ba2be530Sab DBG_CALL(Dbg_file_rejected(lml, &_rej, M_MACH)); 240531fdd7caSab rejection_inherit(rej, &_rej); 24067c478bd9Sstevel@tonic-gate return (0); 24077c478bd9Sstevel@tonic-gate } 24087c478bd9Sstevel@tonic-gate } 24097c478bd9Sstevel@tonic-gate 24107c478bd9Sstevel@tonic-gate /* 24117c478bd9Sstevel@tonic-gate * Finish processing this loaded object. 24127c478bd9Sstevel@tonic-gate */ 2413390b98b5Srie if (load_finish(lml, name, clmp, nmode, flags, hdl, nlmp) == 0) { 2414390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 2415390b98b5Srie 2416390b98b5Srie /* 2417390b98b5Srie * If this object has already been analyzed, then it is in use, 2418390b98b5Srie * so even though this operation has failed, it should not be 2419390b98b5Srie * torn down. 2420390b98b5Srie */ 2421390b98b5Srie if ((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) 2422390b98b5Srie remove_so(lml, nlmp); 2423390b98b5Srie return (0); 2424390b98b5Srie } 24257c478bd9Sstevel@tonic-gate 24267c478bd9Sstevel@tonic-gate /* 2427390b98b5Srie * If this object is new, and we're being audited, tell the audit 2428390b98b5Srie * library of the file we've just opened. Note, if the new link-map 2429390b98b5Srie * requires local auditing of its dependencies we also register its 2430390b98b5Srie * opening. 24317c478bd9Sstevel@tonic-gate */ 2432390b98b5Srie if (FLAGS(nlmp) & FLG_RT_NEWLOAD) { 2433390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 2434390b98b5Srie 2435390b98b5Srie if (((lml->lm_tflags | FLAGS1(clmp) | FLAGS1(nlmp)) & 2436390b98b5Srie LML_TFLG_AUD_MASK) && (((lml->lm_flags | 2437390b98b5Srie LIST(clmp)->lm_flags) & LML_FLG_NOAUDIT) == 0)) { 2438390b98b5Srie if (audit_objopen(clmp, nlmp) == 0) { 2439390b98b5Srie remove_so(lml, nlmp); 2440390b98b5Srie return (0); 2441390b98b5Srie } 2442390b98b5Srie } 2443390b98b5Srie } 2444390b98b5Srie return (nlmp); 24457c478bd9Sstevel@tonic-gate } 24467c478bd9Sstevel@tonic-gate 2447fb1354edSrie Rt_map * 24489aa23310Srie load_path(Lm_list *lml, Aliste lmco, const char **name, Rt_map *clmp, int nmode, 24499aa23310Srie uint_t flags, Grp_hdl **hdl, Fdesc *cfdp, Rej_desc *rej, int *in_nfavl) 2450fb1354edSrie { 2451fb1354edSrie Rt_map *lmp; 2452fb1354edSrie Fdesc nfdp = { 0 }; 2453fb1354edSrie 2454fb1354edSrie /* 2455fb1354edSrie * If this path resulted from a $HWCAP specification, then the best 2456fb1354edSrie * hardware capability object has already been establish, and is 2457fb1354edSrie * available in the calling file descriptor. 2458fb1354edSrie */ 2459fb1354edSrie if (flags & FLG_RT_HWCAP) { 2460fb1354edSrie if (cfdp->fd_lmp == 0) { 2461fb1354edSrie /* 2462fb1354edSrie * If this object hasn't yet been mapped, re-establish 2463fb1354edSrie * the file descriptor structure to reflect this objects 2464fb1354edSrie * original initial page mapping. Make sure any present 2465fb1354edSrie * file descriptor mapping is removed before overwriting 2466fb1354edSrie * the structure. 2467fb1354edSrie */ 2468fb1354edSrie #if defined(MAP_ALIGN) 2469fb1354edSrie if (fmap->fm_maddr && 2470fb1354edSrie ((fmap->fm_mflags & MAP_ALIGN) == 0)) 2471fb1354edSrie #else 2472fb1354edSrie if (fmap->fm_maddr) 2473fb1354edSrie #endif 2474fb1354edSrie (void) munmap(fmap->fm_maddr, fmap->fm_msize); 247546d4d531Srie 247646d4d531Srie *fmap = cfdp->fd_fmap; 2477fb1354edSrie } 2478fb1354edSrie nfdp = *cfdp; 2479fb1354edSrie } 2480fb1354edSrie 24819aa23310Srie lmp = _load_path(lml, lmco, name, clmp, nmode, flags, hdl, &nfdp, 24829aa23310Srie rej, in_nfavl); 2483fb1354edSrie 2484fb1354edSrie /* 2485fb1354edSrie * If this path originated from a $HWCAP specification, re-establish the 2486fb1354edSrie * fdesc information. For single paged objects, such as filters, the 2487fb1354edSrie * original mapping may have been sufficient to capture the file, thus 2488fb1354edSrie * this mapping needs to be reset to insure it doesn't mistakenly get 2489fb1354edSrie * unmapped as part of HWCAP cleanup. 2490fb1354edSrie */ 249146d4d531Srie if ((flags & FLG_RT_HWCAP) && (cfdp->fd_lmp == 0)) { 2492fb1354edSrie cfdp->fd_fmap.fm_maddr = fmap->fm_maddr; 2493fb1354edSrie cfdp->fd_fmap.fm_mflags = fmap->fm_mflags; 2494fb1354edSrie cfdp->fd_fd = nfdp.fd_fd; 2495fb1354edSrie } 2496fb1354edSrie 2497fb1354edSrie return (lmp); 2498fb1354edSrie } 2499fb1354edSrie 25007c478bd9Sstevel@tonic-gate /* 25017c478bd9Sstevel@tonic-gate * Load one object from a possible list of objects. Typically, for requests 25027c478bd9Sstevel@tonic-gate * such as NEEDED's, only one object is specified. However, this object could 25037c478bd9Sstevel@tonic-gate * be specified using $ISALIST or $HWCAP, in which case only the first object 25047c478bd9Sstevel@tonic-gate * that can be loaded is used (ie. the best). 25057c478bd9Sstevel@tonic-gate */ 25067c478bd9Sstevel@tonic-gate Rt_map * 25077c478bd9Sstevel@tonic-gate load_one(Lm_list *lml, Aliste lmco, Pnode *pnp, Rt_map *clmp, int mode, 25089aa23310Srie uint_t flags, Grp_hdl **hdl, int *in_nfavl) 25097c478bd9Sstevel@tonic-gate { 25107c478bd9Sstevel@tonic-gate Rej_desc rej = { 0 }; 25117c478bd9Sstevel@tonic-gate Pnode *tpnp; 25127c478bd9Sstevel@tonic-gate const char *name; 25137c478bd9Sstevel@tonic-gate 25147c478bd9Sstevel@tonic-gate for (tpnp = pnp; tpnp && tpnp->p_name; tpnp = tpnp->p_next) { 25157247f888Srie Rt_map *tlmp; 25167247f888Srie 25177c478bd9Sstevel@tonic-gate /* 25187c478bd9Sstevel@tonic-gate * A Hardware capabilities requirement can itself expand into 25197c478bd9Sstevel@tonic-gate * a number of candidates. 25207c478bd9Sstevel@tonic-gate */ 25217c478bd9Sstevel@tonic-gate if (tpnp->p_orig & PN_TKN_HWCAP) { 25227c478bd9Sstevel@tonic-gate if ((tlmp = load_hwcap(lml, lmco, tpnp->p_name, clmp, 25239aa23310Srie mode, (flags | FLG_RT_HWCAP), hdl, &rej, 25249aa23310Srie in_nfavl)) != 0) { 25257c478bd9Sstevel@tonic-gate remove_rej(&rej); 25267c478bd9Sstevel@tonic-gate return (tlmp); 25277c478bd9Sstevel@tonic-gate } 25287c478bd9Sstevel@tonic-gate } else { 25297247f888Srie if ((tlmp = load_path(lml, lmco, &tpnp->p_name, clmp, 25309aa23310Srie mode, flags, hdl, 0, &rej, in_nfavl)) != 0) { 25317c478bd9Sstevel@tonic-gate remove_rej(&rej); 25327c478bd9Sstevel@tonic-gate return (tlmp); 25337c478bd9Sstevel@tonic-gate } 25347c478bd9Sstevel@tonic-gate } 25357c478bd9Sstevel@tonic-gate } 25367c478bd9Sstevel@tonic-gate 25377c478bd9Sstevel@tonic-gate /* 25387c478bd9Sstevel@tonic-gate * If this pathname originated from an expanded token, use the original 25397c478bd9Sstevel@tonic-gate * for any diagnostic output. 25407c478bd9Sstevel@tonic-gate */ 25417c478bd9Sstevel@tonic-gate if ((name = pnp->p_oname) == 0) 25427c478bd9Sstevel@tonic-gate name = pnp->p_name; 25437c478bd9Sstevel@tonic-gate 25447c478bd9Sstevel@tonic-gate file_notfound(lml, name, clmp, flags, &rej); 25457c478bd9Sstevel@tonic-gate remove_rej(&rej); 25467c478bd9Sstevel@tonic-gate return (0); 25477c478bd9Sstevel@tonic-gate } 25487c478bd9Sstevel@tonic-gate 25499a411307Srie /* 25509a411307Srie * Determine whether a symbol is defined as an interposer. 25519a411307Srie */ 25529a411307Srie int 25539a411307Srie is_sym_interposer(Rt_map *lmp, Sym *sym) 25549a411307Srie { 25559a411307Srie Syminfo *sip = SYMINFO(lmp); 25569a411307Srie 25579a411307Srie if (sip) { 25589a411307Srie ulong_t ndx; 25599a411307Srie 25609a411307Srie ndx = (((ulong_t)sym - (ulong_t)SYMTAB(lmp)) / SYMENT(lmp)); 25619a411307Srie /* LINTED */ 25629a411307Srie sip = (Syminfo *)((char *)sip + (ndx * SYMINENT(lmp))); 25639a411307Srie if (sip->si_flags & SYMINFO_FLG_INTERPOSE) 25649a411307Srie return (1); 25659a411307Srie } 25669a411307Srie return (0); 25679a411307Srie } 25689a411307Srie 25697c478bd9Sstevel@tonic-gate /* 25707c478bd9Sstevel@tonic-gate * While processing direct or group bindings, determine whether the object to 25717c478bd9Sstevel@tonic-gate * which we've bound can be interposed upon. In this context, copy relocations 25727c478bd9Sstevel@tonic-gate * are a form of interposition. 25737c478bd9Sstevel@tonic-gate */ 25747c478bd9Sstevel@tonic-gate static Sym * 2575adbfe822Srie lookup_sym_interpose(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Sym *osym, 2576adbfe822Srie int *in_nfavl) 25777c478bd9Sstevel@tonic-gate { 2578adbfe822Srie Rt_map *lmp, *clmp; 25797c478bd9Sstevel@tonic-gate Slookup sl; 2580adbfe822Srie Lm_list *lml; 25817c478bd9Sstevel@tonic-gate 25827c478bd9Sstevel@tonic-gate /* 25837c478bd9Sstevel@tonic-gate * If we've bound to a copy relocation definition then we need to assign 25847c478bd9Sstevel@tonic-gate * this binding to the original copy reference. Fabricate an inter- 25857c478bd9Sstevel@tonic-gate * position diagnostic, as this is a legitimate form of interposition. 25867c478bd9Sstevel@tonic-gate */ 2587adbfe822Srie if (osym && (FLAGS1(*dlmp) & FL1_RT_COPYTOOK)) { 25887c478bd9Sstevel@tonic-gate Rel_copy *rcp; 2589cce0e03bSab Aliste idx; 25907c478bd9Sstevel@tonic-gate 2591cce0e03bSab for (ALIST_TRAVERSE(COPY_R(*dlmp), idx, rcp)) { 2592aa736cbeSrie if ((osym == rcp->r_dsym) || (osym->st_value && 2593aa736cbeSrie (osym->st_value == rcp->r_dsym->st_value))) { 25947c478bd9Sstevel@tonic-gate *dlmp = rcp->r_rlmp; 25957c478bd9Sstevel@tonic-gate *binfo |= 25967c478bd9Sstevel@tonic-gate (DBG_BINFO_INTERPOSE | DBG_BINFO_COPYREF); 25977c478bd9Sstevel@tonic-gate return (rcp->r_rsym); 25987c478bd9Sstevel@tonic-gate } 25997c478bd9Sstevel@tonic-gate } 26007c478bd9Sstevel@tonic-gate } 26017c478bd9Sstevel@tonic-gate 2602adbfe822Srie /* 2603adbfe822Srie * If a symbol binding has been established, inspect the link-map list 2604adbfe822Srie * of the destination object, otherwise use the link-map list of the 2605adbfe822Srie * original caller. 2606adbfe822Srie */ 2607adbfe822Srie if (osym) 2608adbfe822Srie clmp = *dlmp; 2609adbfe822Srie else 2610adbfe822Srie clmp = slp->sl_cmap; 2611adbfe822Srie 2612adbfe822Srie lml = LIST(clmp); 2613adbfe822Srie lmp = lml->lm_head; 2614adbfe822Srie 2615aa736cbeSrie /* 2616aa736cbeSrie * Prior to Solaris 8, external references from an executable that were 2617aa736cbeSrie * bound to an uninitialized variable (.bss) within a shared object did 2618aa736cbeSrie * not establish a copy relocation. This was thought to be an 2619aa736cbeSrie * optimization, to prevent copying zero's to zero's. Typically, 2620aa736cbeSrie * interposition took its course, with the shared object binding to the 2621aa736cbeSrie * executables data definition. 2622aa736cbeSrie * 2623aa736cbeSrie * This scenario can be broken when this old executable runs against a 2624aa736cbeSrie * new shared object that is directly bound. With no copy-relocation 2625aa736cbeSrie * record, ld.so.1 has no data to trigger the normal vectoring of the 2626aa736cbeSrie * binding to the executable. 2627aa736cbeSrie * 2628aa736cbeSrie * Starting with Solaris 8, a DT_FLAGS entry is written to all objects, 2629aa736cbeSrie * regardless of there being any DF_ flags entries. Therefore, an 2630aa736cbeSrie * object without this dynamic tag is susceptible to the copy relocation 2631aa736cbeSrie * issue. If the executable has no DT_FLAGS tag, and contains the same 2632aa736cbeSrie * .bss symbol definition as has been directly bound to, redirect the 2633aa736cbeSrie * binding to the executables data definition. 2634aa736cbeSrie */ 2635adbfe822Srie if (osym && ((FLAGS2(lmp) & FL2_RT_DTFLAGS) == 0) && 2636adbfe822Srie (FCT(lmp) == &elf_fct) && 2637466e2a62Srie (ELF_ST_TYPE(osym->st_info) != STT_FUNC) && 2638466e2a62Srie are_bits_zero(*dlmp, osym, 0)) { 2639aa736cbeSrie Rt_map *ilmp; 2640aa736cbeSrie Sym *isym; 2641aa736cbeSrie 2642adbfe822Srie sl = *slp; 2643adbfe822Srie sl.sl_imap = lmp; 2644adbfe822Srie 2645aa736cbeSrie /* 2646aa736cbeSrie * Determine whether the same symbol name exists within the 2647aa736cbeSrie * executable, that the size and type of symbol are the same, 2648aa736cbeSrie * and that the symbol is also associated with .bss. 2649aa736cbeSrie */ 26509aa23310Srie if (((isym = SYMINTP(lmp)(&sl, &ilmp, binfo, 26519aa23310Srie in_nfavl)) != NULL) && (isym->st_size == osym->st_size) && 2652aa736cbeSrie (isym->st_info == osym->st_info) && 2653466e2a62Srie are_bits_zero(lmp, isym, 1)) { 2654aa736cbeSrie *dlmp = lmp; 2655aa736cbeSrie *binfo |= (DBG_BINFO_INTERPOSE | DBG_BINFO_COPYREF); 2656aa736cbeSrie return (isym); 2657aa736cbeSrie } 2658aa736cbeSrie } 2659aa736cbeSrie 26607c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_INTRPOSE) == 0) 26617c478bd9Sstevel@tonic-gate return ((Sym *)0); 26627c478bd9Sstevel@tonic-gate 26637c478bd9Sstevel@tonic-gate /* 26647c478bd9Sstevel@tonic-gate * Traverse the list of known interposers to determine whether any 26657c478bd9Sstevel@tonic-gate * offer the same symbol. Note, the head of the link-map could be 2666aa736cbeSrie * identified as an interposer. Otherwise, skip the head of the 2667aa736cbeSrie * link-map, so that we don't bind to any .plt references, or 2668aa736cbeSrie * copy-relocation destinations unintentionally. 26697c478bd9Sstevel@tonic-gate */ 26707c478bd9Sstevel@tonic-gate lmp = lml->lm_head; 26717c478bd9Sstevel@tonic-gate sl = *slp; 2672adbfe822Srie 26739a411307Srie if (((FLAGS(lmp) & MSK_RT_INTPOSE) == 0) || (sl.sl_flags & LKUP_COPY)) 26747c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(lmp); 26757c478bd9Sstevel@tonic-gate 26767c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 26777c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_DELETE) 26787c478bd9Sstevel@tonic-gate continue; 26799a411307Srie if ((FLAGS(lmp) & MSK_RT_INTPOSE) == 0) 26807c478bd9Sstevel@tonic-gate break; 26817c478bd9Sstevel@tonic-gate 2682adbfe822Srie if (callable(lmp, clmp, 0, sl.sl_flags)) { 26839a411307Srie Rt_map *ilmp; 2684aa736cbeSrie Sym *isym; 26859a411307Srie 26867c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 26879aa23310Srie if (isym = SYMINTP(lmp)(&sl, &ilmp, binfo, in_nfavl)) { 26889a411307Srie /* 26899a411307Srie * If this object provides individual symbol 26909a411307Srie * interposers, make sure that the symbol we 26919a411307Srie * have found is tagged as an interposer. 26929a411307Srie */ 26939a411307Srie if ((FLAGS(ilmp) & FLG_RT_SYMINTPO) && 2694aa736cbeSrie (is_sym_interposer(ilmp, isym) == 0)) 26959a411307Srie continue; 26969a411307Srie 26979a411307Srie /* 26989a411307Srie * Indicate this binding has occurred to an 26999a411307Srie * interposer, and return the symbol. 27009a411307Srie */ 27017c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_INTERPOSE; 27029a411307Srie *dlmp = ilmp; 2703aa736cbeSrie return (isym); 27047c478bd9Sstevel@tonic-gate } 27057c478bd9Sstevel@tonic-gate } 27067c478bd9Sstevel@tonic-gate } 27077c478bd9Sstevel@tonic-gate return ((Sym *)0); 27087c478bd9Sstevel@tonic-gate } 27097c478bd9Sstevel@tonic-gate 27107c478bd9Sstevel@tonic-gate /* 27117c478bd9Sstevel@tonic-gate * If an object specifies direct bindings (it contains a syminfo structure 27127c478bd9Sstevel@tonic-gate * describing where each binding was established during link-editing, and the 27137c478bd9Sstevel@tonic-gate * object was built -Bdirect), then look for the symbol in the specific object. 27147c478bd9Sstevel@tonic-gate */ 27157c478bd9Sstevel@tonic-gate static Sym * 27167c478bd9Sstevel@tonic-gate lookup_sym_direct(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Syminfo *sip, 27179aa23310Srie Rt_map *lmp, int *in_nfavl) 27187c478bd9Sstevel@tonic-gate { 27197c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 27207c478bd9Sstevel@tonic-gate Sym *sym; 27217c478bd9Sstevel@tonic-gate Slookup sl; 27227c478bd9Sstevel@tonic-gate 27237c478bd9Sstevel@tonic-gate /* 27247c478bd9Sstevel@tonic-gate * If a direct binding resolves to the definition of a copy relocated 27257c478bd9Sstevel@tonic-gate * variable, it must be redirected to the copy (in the executable) that 27267c478bd9Sstevel@tonic-gate * will eventually be made. Typically, this redirection occurs in 27277c478bd9Sstevel@tonic-gate * lookup_sym_interpose(). But, there's an edge condition. If a 27287c478bd9Sstevel@tonic-gate * directly bound executable contains pic code, there may be a 27297c478bd9Sstevel@tonic-gate * reference to a definition that will eventually have a copy made. 27307c478bd9Sstevel@tonic-gate * However, this copy relocation may not yet have occurred, because 27317c478bd9Sstevel@tonic-gate * the relocation making this reference comes before the relocation 27327c478bd9Sstevel@tonic-gate * that will create the copy. 27337c478bd9Sstevel@tonic-gate * Under direct bindings, the syminfo indicates that a copy will be 27347c478bd9Sstevel@tonic-gate * taken (SYMINFO_FLG_COPY). This can only be set in an executable. 27357c478bd9Sstevel@tonic-gate * Thus, the caller must be the executable, so bind to the destination 27367c478bd9Sstevel@tonic-gate * of the copy within the executable. 27377c478bd9Sstevel@tonic-gate */ 27387c478bd9Sstevel@tonic-gate if (((slp->sl_flags & LKUP_COPY) == 0) && 27397c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_COPY)) { 27407c478bd9Sstevel@tonic-gate 27417c478bd9Sstevel@tonic-gate slp->sl_imap = LIST(clmp)->lm_head; 27429aa23310Srie if (sym = SYMINTP(clmp)(slp, dlmp, binfo, in_nfavl)) 27437c478bd9Sstevel@tonic-gate *binfo |= (DBG_BINFO_DIRECT | DBG_BINFO_COPYREF); 27447c478bd9Sstevel@tonic-gate return (sym); 27457c478bd9Sstevel@tonic-gate } 27467c478bd9Sstevel@tonic-gate 27477c478bd9Sstevel@tonic-gate /* 2748efb9e8b8Srie * If we need to directly bind to our parent, start looking in each 2749efb9e8b8Srie * callers link map. 27507c478bd9Sstevel@tonic-gate */ 27517c478bd9Sstevel@tonic-gate sl = *slp; 27527c478bd9Sstevel@tonic-gate sl.sl_flags |= LKUP_DIRECT; 2753adbfe822Srie sym = NULL; 27547c478bd9Sstevel@tonic-gate 27557c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_PARENT) { 2756cce0e03bSab Aliste idx1; 2757cce0e03bSab Bnd_desc *bdp; 2758cce0e03bSab Grp_hdl *ghp; 27597c478bd9Sstevel@tonic-gate 2760efb9e8b8Srie /* 2761efb9e8b8Srie * Determine the parent of this explicit dependency from its 2762efb9e8b8Srie * CALLERS()'s list. 2763efb9e8b8Srie */ 2764cce0e03bSab for (APLIST_TRAVERSE(CALLERS(clmp), idx1, bdp)) { 2765cce0e03bSab sl.sl_imap = lmp = bdp->b_caller; 27669aa23310Srie if ((sym = SYMINTP(lmp)(&sl, dlmp, binfo, 27679aa23310Srie in_nfavl)) != NULL) 2768efb9e8b8Srie goto found; 2769efb9e8b8Srie } 2770efb9e8b8Srie 2771efb9e8b8Srie /* 2772efb9e8b8Srie * A caller can also be defined as the parent of a dlopen() 2773efb9e8b8Srie * call. Determine whether this object has any handles. The 2774efb9e8b8Srie * dependencies maintained with the handle represent the 2775efb9e8b8Srie * explicit dependencies of the dlopen()'ed object, and the 2776efb9e8b8Srie * calling parent. 2777efb9e8b8Srie */ 2778cce0e03bSab for (APLIST_TRAVERSE(HANDLES(clmp), idx1, ghp)) { 2779efb9e8b8Srie Grp_desc *gdp; 2780cce0e03bSab Aliste idx2; 2781efb9e8b8Srie 2782cce0e03bSab for (ALIST_TRAVERSE(ghp->gh_depends, idx2, gdp)) { 2783efb9e8b8Srie if ((gdp->gd_flags & GPD_PARENT) == 0) 2784efb9e8b8Srie continue; 2785efb9e8b8Srie sl.sl_imap = lmp = gdp->gd_depend; 2786aa736cbeSrie if ((sym = SYMINTP(lmp)(&sl, dlmp, 27879aa23310Srie binfo, in_nfavl)) != NULL) 2788efb9e8b8Srie goto found; 2789efb9e8b8Srie } 27907c478bd9Sstevel@tonic-gate } 27917c478bd9Sstevel@tonic-gate } else { 27927c478bd9Sstevel@tonic-gate /* 27937c478bd9Sstevel@tonic-gate * If we need to direct bind to anything else look in the 27947c478bd9Sstevel@tonic-gate * link map associated with this symbol reference. 27957c478bd9Sstevel@tonic-gate */ 27967c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_SELF) 27977c478bd9Sstevel@tonic-gate sl.sl_imap = lmp = clmp; 27987c478bd9Sstevel@tonic-gate else 27997c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 28007c478bd9Sstevel@tonic-gate 28017c478bd9Sstevel@tonic-gate if (lmp) 28029aa23310Srie sym = SYMINTP(lmp)(&sl, dlmp, binfo, in_nfavl); 28037c478bd9Sstevel@tonic-gate } 2804efb9e8b8Srie found: 28057c478bd9Sstevel@tonic-gate if (sym) 28067c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_DIRECT; 28077c478bd9Sstevel@tonic-gate 28087c478bd9Sstevel@tonic-gate /* 2809adbfe822Srie * If a reference to a directly bound symbol can't be satisfied, then 2810adbfe822Srie * determine whether an interposer can provide the missing symbol. If 2811adbfe822Srie * a reference to a directly bound symbol is satisfied, then determine 2812adbfe822Srie * whether that object can be interposed upon for this symbol. 28137c478bd9Sstevel@tonic-gate */ 2814adbfe822Srie if ((sym == NULL) || ((LIST(*dlmp)->lm_head != *dlmp) && 2815adbfe822Srie (LIST(*dlmp) == LIST(clmp)))) { 2816aa736cbeSrie Sym *isym; 28177c478bd9Sstevel@tonic-gate 2818adbfe822Srie if ((isym = lookup_sym_interpose(slp, dlmp, binfo, sym, 2819adbfe822Srie in_nfavl)) != 0) 28207c478bd9Sstevel@tonic-gate return (isym); 28217c478bd9Sstevel@tonic-gate } 28227c478bd9Sstevel@tonic-gate 28237c478bd9Sstevel@tonic-gate return (sym); 28247c478bd9Sstevel@tonic-gate } 28257c478bd9Sstevel@tonic-gate 28267c478bd9Sstevel@tonic-gate static Sym * 282760758829Srie core_lookup_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo, 28289aa23310Srie Aliste off, int *in_nfavl) 28297c478bd9Sstevel@tonic-gate { 28307c478bd9Sstevel@tonic-gate Rt_map *lmp; 28317c478bd9Sstevel@tonic-gate 28327c478bd9Sstevel@tonic-gate /* 28337c478bd9Sstevel@tonic-gate * Copy relocations should start their search after the head of the 28347c478bd9Sstevel@tonic-gate * main link-map control list. 28357c478bd9Sstevel@tonic-gate */ 2836cce0e03bSab if ((off == ALIST_OFF_DATA) && (slp->sl_flags & LKUP_COPY) && ilmp) 28377c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(ilmp); 28387c478bd9Sstevel@tonic-gate else 28397c478bd9Sstevel@tonic-gate lmp = ilmp; 28407c478bd9Sstevel@tonic-gate 28417c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 284260758829Srie if (callable(slp->sl_cmap, lmp, 0, slp->sl_flags)) { 28437c478bd9Sstevel@tonic-gate Sym *sym; 28447c478bd9Sstevel@tonic-gate 28457c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 28469aa23310Srie if (((sym = SYMINTP(lmp)(slp, dlmp, binfo, 28479aa23310Srie in_nfavl)) != NULL) || (*binfo & BINFO_REJSINGLE)) 28487c478bd9Sstevel@tonic-gate return (sym); 28497c478bd9Sstevel@tonic-gate } 28507c478bd9Sstevel@tonic-gate } 28517c478bd9Sstevel@tonic-gate return (0); 28527c478bd9Sstevel@tonic-gate } 28537c478bd9Sstevel@tonic-gate 28547c478bd9Sstevel@tonic-gate static Sym * 28559aa23310Srie _lazy_find_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo, 28569aa23310Srie int *in_nfavl) 28577c478bd9Sstevel@tonic-gate { 28587c478bd9Sstevel@tonic-gate Rt_map *lmp; 28597c478bd9Sstevel@tonic-gate 28607c478bd9Sstevel@tonic-gate for (lmp = ilmp; lmp; lmp = (Rt_map *)NEXT(lmp)) { 28617c478bd9Sstevel@tonic-gate if (LAZY(lmp) == 0) 28627c478bd9Sstevel@tonic-gate continue; 286360758829Srie if (callable(slp->sl_cmap, lmp, 0, slp->sl_flags)) { 28647c478bd9Sstevel@tonic-gate Sym *sym; 28657c478bd9Sstevel@tonic-gate 28667c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 28679aa23310Srie if ((sym = elf_lazy_find_sym(slp, dlmp, binfo, 28689aa23310Srie in_nfavl)) != 0) 28697c478bd9Sstevel@tonic-gate return (sym); 28707c478bd9Sstevel@tonic-gate } 28717c478bd9Sstevel@tonic-gate } 28727c478bd9Sstevel@tonic-gate return (0); 28737c478bd9Sstevel@tonic-gate } 28747c478bd9Sstevel@tonic-gate 287560758829Srie static Sym * 28769aa23310Srie _lookup_sym(Slookup *slp, Rt_map **dlmp, uint_t *binfo, int *in_nfavl) 28777c478bd9Sstevel@tonic-gate { 28787c478bd9Sstevel@tonic-gate const char *name = slp->sl_name; 28797c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 2880dae2dfb7Srie Lm_list *lml = LIST(clmp); 28817c478bd9Sstevel@tonic-gate Rt_map *ilmp = slp->sl_imap, *lmp; 28827c478bd9Sstevel@tonic-gate ulong_t rsymndx; 288360758829Srie Sym *sym; 28847c478bd9Sstevel@tonic-gate Syminfo *sip; 28857c478bd9Sstevel@tonic-gate Slookup sl; 28867c478bd9Sstevel@tonic-gate 28877c478bd9Sstevel@tonic-gate /* 28887c478bd9Sstevel@tonic-gate * Search the initial link map for the required symbol (this category is 28897c478bd9Sstevel@tonic-gate * selected by dlsym(), where individual link maps are searched for a 28907c478bd9Sstevel@tonic-gate * required symbol. Therefore, we know we have permission to look at 28917c478bd9Sstevel@tonic-gate * the link map). 28927c478bd9Sstevel@tonic-gate */ 289360758829Srie if (slp->sl_flags & LKUP_FIRST) 28949aa23310Srie return (SYMINTP(ilmp)(slp, dlmp, binfo, in_nfavl)); 28957c478bd9Sstevel@tonic-gate 28967c478bd9Sstevel@tonic-gate /* 28977c478bd9Sstevel@tonic-gate * Determine whether this lookup can be satisfied by an objects direct, 28987c478bd9Sstevel@tonic-gate * or lazy binding information. This is triggered by a relocation from 28997c478bd9Sstevel@tonic-gate * the object (hence rsymndx is set). 29007c478bd9Sstevel@tonic-gate */ 29017c478bd9Sstevel@tonic-gate if (((rsymndx = slp->sl_rsymndx) != 0) && 2902aa736cbeSrie ((sip = SYMINFO(clmp)) != NULL)) { 2903dae2dfb7Srie uint_t bound; 2904dae2dfb7Srie 29057c478bd9Sstevel@tonic-gate /* 29067c478bd9Sstevel@tonic-gate * Find the corresponding Syminfo entry for the original 29077c478bd9Sstevel@tonic-gate * referencing symbol. 29087c478bd9Sstevel@tonic-gate */ 29097c478bd9Sstevel@tonic-gate /* LINTED */ 29107c478bd9Sstevel@tonic-gate sip = (Syminfo *)((char *)sip + (rsymndx * SYMINENT(clmp))); 2911dae2dfb7Srie bound = sip->si_boundto; 2912dae2dfb7Srie 2913dae2dfb7Srie /* 2914dae2dfb7Srie * Identify any EXTERN or PARENT references for ldd(1). 2915dae2dfb7Srie */ 2916dae2dfb7Srie if ((lml->lm_flags & LML_FLG_TRC_WARN) && 2917dae2dfb7Srie (bound > SYMINFO_BT_LOWRESERVE)) { 2918dae2dfb7Srie if (bound == SYMINFO_BT_PARENT) 2919dae2dfb7Srie *binfo |= DBG_BINFO_REF_PARENT; 2920dae2dfb7Srie if (bound == SYMINFO_BT_EXTERN) 2921dae2dfb7Srie *binfo |= DBG_BINFO_REF_EXTERN; 2922dae2dfb7Srie } 29237c478bd9Sstevel@tonic-gate 29247c478bd9Sstevel@tonic-gate /* 29257c478bd9Sstevel@tonic-gate * If the symbol information indicates a direct binding, 29267c478bd9Sstevel@tonic-gate * determine the link map that is required to satisfy the 29277c478bd9Sstevel@tonic-gate * binding. Note, if the dependency can not be found, but a 29287c478bd9Sstevel@tonic-gate * direct binding isn't required, we will still fall through 29297c478bd9Sstevel@tonic-gate * to perform any default symbol search. 29307c478bd9Sstevel@tonic-gate */ 29317c478bd9Sstevel@tonic-gate if (sip->si_flags & SYMINFO_FLG_DIRECT) { 29327c478bd9Sstevel@tonic-gate 29337c478bd9Sstevel@tonic-gate lmp = 0; 29347c478bd9Sstevel@tonic-gate if (bound < SYMINFO_BT_LOWRESERVE) 29359aa23310Srie lmp = elf_lazy_load(clmp, slp, bound, 29369aa23310Srie name, in_nfavl); 29377c478bd9Sstevel@tonic-gate 29387c478bd9Sstevel@tonic-gate /* 29397c478bd9Sstevel@tonic-gate * If direct bindings have been disabled, and this isn't 29407c478bd9Sstevel@tonic-gate * a translator, skip any direct binding now that we've 294160758829Srie * ensured the resolving object has been loaded. 29427c478bd9Sstevel@tonic-gate * 29437c478bd9Sstevel@tonic-gate * If we need to direct bind to anything, we look in 29447c478bd9Sstevel@tonic-gate * ourselves, our parent, or in the link map we've just 29457c478bd9Sstevel@tonic-gate * loaded. Otherwise, even though we may have lazily 29467c478bd9Sstevel@tonic-gate * loaded an object we still continue to search for 29477c478bd9Sstevel@tonic-gate * symbols from the head of the link map list. 29487c478bd9Sstevel@tonic-gate */ 29497c478bd9Sstevel@tonic-gate if (((FLAGS(clmp) & FLG_RT_TRANS) || 2950dae2dfb7Srie (((lml->lm_tflags & LML_TFLG_NODIRECT) == 0) && 2951dae2dfb7Srie ((slp->sl_flags & LKUP_SINGLETON) == 0))) && 29529a411307Srie ((FLAGS1(clmp) & FL1_RT_DIRECT) || 29537c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_DIRECTBIND))) { 29547c478bd9Sstevel@tonic-gate sym = lookup_sym_direct(slp, dlmp, binfo, 29559aa23310Srie sip, lmp, in_nfavl); 29567c478bd9Sstevel@tonic-gate 29577c478bd9Sstevel@tonic-gate /* 295860758829Srie * Determine whether this direct binding has 295960758829Srie * been rejected. If we've bound to a singleton 296060758829Srie * without following a singleton search, then 296160758829Srie * return. The caller detects this condition 296260758829Srie * and will trigger a new singleton search. 296360758829Srie * 296460758829Srie * For any other rejection (such as binding to 296560758829Srie * a symbol labeled as nodirect - presumably 296660758829Srie * because the symbol definition has been 296760758829Srie * changed since the referring object was last 296860758829Srie * built), fall through to a standard symbol 29697c478bd9Sstevel@tonic-gate * search. 29707c478bd9Sstevel@tonic-gate */ 297160758829Srie if (((*binfo & BINFO_REJECTED) == 0) || 297260758829Srie (*binfo & BINFO_REJSINGLE)) 29737c478bd9Sstevel@tonic-gate return (sym); 297460758829Srie 297560758829Srie *binfo &= ~BINFO_REJECTED; 29767c478bd9Sstevel@tonic-gate } 29777c478bd9Sstevel@tonic-gate } 29787c478bd9Sstevel@tonic-gate } 29797c478bd9Sstevel@tonic-gate 298060758829Srie /* 298160758829Srie * Duplicate the lookup information, as we'll need to modify this 298260758829Srie * information for some of the following searches. 298360758829Srie */ 29847c478bd9Sstevel@tonic-gate sl = *slp; 29857c478bd9Sstevel@tonic-gate 29867c478bd9Sstevel@tonic-gate /* 29877c478bd9Sstevel@tonic-gate * If the referencing object has the DF_SYMBOLIC flag set, look in the 29887c478bd9Sstevel@tonic-gate * referencing object for the symbol first. Failing that, fall back to 29897c478bd9Sstevel@tonic-gate * our generic search. 29907c478bd9Sstevel@tonic-gate */ 299160758829Srie if ((FLAGS1(clmp) & FL1_RT_SYMBOLIC) && 299260758829Srie ((sl.sl_flags & LKUP_SINGLETON) == 0)) { 29937c478bd9Sstevel@tonic-gate sl.sl_imap = clmp; 29949aa23310Srie if (sym = SYMINTP(clmp)(&sl, dlmp, binfo, in_nfavl)) { 29959a411307Srie ulong_t dsymndx = (((ulong_t)sym - 29967247f888Srie (ulong_t)SYMTAB(*dlmp)) / SYMENT(*dlmp)); 29979a411307Srie 29989a411307Srie /* 29999a411307Srie * Make sure this symbol hasn't explicitly been defined 30009a411307Srie * as nodirect. 30019a411307Srie */ 30029a411307Srie if (((sip = SYMINFO(*dlmp)) == 0) || 30039a411307Srie /* LINTED */ 30049a411307Srie ((sip = (Syminfo *)((char *)sip + 30059a411307Srie (dsymndx * SYMINENT(*dlmp)))) == 0) || 30069a411307Srie ((sip->si_flags & SYMINFO_FLG_NOEXTDIRECT) == 0)) 30079a411307Srie return (sym); 30089a411307Srie } 30097c478bd9Sstevel@tonic-gate } 30107c478bd9Sstevel@tonic-gate 301160758829Srie sl.sl_flags |= LKUP_STANDARD; 301260758829Srie 30137c478bd9Sstevel@tonic-gate /* 30147c478bd9Sstevel@tonic-gate * If this lookup originates from a standard relocation, then traverse 301560758829Srie * all link-map control lists, inspecting any object that is available 301660758829Srie * to this caller. Otherwise, traverse the link-map control list 301760758829Srie * associated with the caller. 30187c478bd9Sstevel@tonic-gate */ 301960758829Srie if (sl.sl_flags & LKUP_STDRELOC) { 30207c478bd9Sstevel@tonic-gate Aliste off; 30217c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 30227c478bd9Sstevel@tonic-gate 302360758829Srie sym = NULL; 30247c478bd9Sstevel@tonic-gate 3025dae2dfb7Srie for (ALIST_TRAVERSE_BY_OFFSET(lml->lm_lists, off, lmc)) { 302660758829Srie if (((sym = core_lookup_sym(lmc->lc_head, &sl, dlmp, 30279aa23310Srie binfo, off, in_nfavl)) != NULL) || 302860758829Srie (*binfo & BINFO_REJSINGLE)) 30297c478bd9Sstevel@tonic-gate break; 30307c478bd9Sstevel@tonic-gate } 30317c478bd9Sstevel@tonic-gate } else 30329aa23310Srie sym = core_lookup_sym(ilmp, &sl, dlmp, binfo, ALIST_OFF_DATA, 30339aa23310Srie in_nfavl); 303460758829Srie 303560758829Srie /* 303660758829Srie * If a symbol binding was rejected, because a binding occurred to a 303760758829Srie * singleton without following the default symbol search, return so 303860758829Srie * that the search can be repreated. 303960758829Srie */ 304060758829Srie if (*binfo & BINFO_REJSINGLE) 304160758829Srie return (sym); 30427c478bd9Sstevel@tonic-gate 30437c478bd9Sstevel@tonic-gate /* 30447c478bd9Sstevel@tonic-gate * To allow transitioning into a world of lazy loading dependencies see 30457c478bd9Sstevel@tonic-gate * if this link map contains objects that have lazy dependencies still 30467c478bd9Sstevel@tonic-gate * outstanding. If so, and we haven't been able to locate a non-weak 30477c478bd9Sstevel@tonic-gate * symbol reference, start bringing in any lazy dependencies to see if 30487c478bd9Sstevel@tonic-gate * the reference can be satisfied. Use of dlsym(RTLD_PROBE) sets the 304975e7992aSrie * LKUP_NOFALLBACK flag, and this flag disables this fall back. 30507c478bd9Sstevel@tonic-gate */ 305175e7992aSrie if ((sym == NULL) && ((sl.sl_flags & LKUP_NOFALLBACK) == 0)) { 30527c478bd9Sstevel@tonic-gate if ((lmp = ilmp) == 0) 30537c478bd9Sstevel@tonic-gate lmp = LIST(clmp)->lm_head; 305475e7992aSrie 3055dae2dfb7Srie lml = LIST(lmp); 3056dae2dfb7Srie if ((sl.sl_flags & LKUP_WEAK) || (lml->lm_lazy == 0)) 30577c478bd9Sstevel@tonic-gate return ((Sym *)0); 30587c478bd9Sstevel@tonic-gate 3059dae2dfb7Srie DBG_CALL(Dbg_syms_lazy_rescan(lml, name)); 30607c478bd9Sstevel@tonic-gate 30617c478bd9Sstevel@tonic-gate /* 30627c478bd9Sstevel@tonic-gate * If this request originated from a dlsym(RTLD_NEXT) then start 30637c478bd9Sstevel@tonic-gate * looking for dependencies from the caller, otherwise use the 30647c478bd9Sstevel@tonic-gate * initial link-map. 30657c478bd9Sstevel@tonic-gate */ 306660758829Srie if (sl.sl_flags & LKUP_NEXT) 30679aa23310Srie sym = _lazy_find_sym(clmp, &sl, dlmp, binfo, in_nfavl); 30687c478bd9Sstevel@tonic-gate else { 3069cce0e03bSab Aliste idx; 30707c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 30717c478bd9Sstevel@tonic-gate 3072dae2dfb7Srie for (ALIST_TRAVERSE(lml->lm_lists, idx, lmc)) { 307375e7992aSrie sl.sl_flags |= LKUP_NOFALLBACK; 30747c478bd9Sstevel@tonic-gate if ((sym = _lazy_find_sym(lmc->lc_head, &sl, 30759aa23310Srie dlmp, binfo, in_nfavl)) != 0) 30767c478bd9Sstevel@tonic-gate break; 30777c478bd9Sstevel@tonic-gate } 30787c478bd9Sstevel@tonic-gate } 30797c478bd9Sstevel@tonic-gate } 308060758829Srie return (sym); 308160758829Srie } 308260758829Srie 308360758829Srie /* 308460758829Srie * Symbol lookup routine. Takes an ELF symbol name, and a list of link maps to 308560758829Srie * search. If successful, return a pointer to the symbol table entry, a 308660758829Srie * pointer to the link map of the enclosing object, and information relating 308760758829Srie * to the type of binding. Else return a null pointer. 308860758829Srie * 308960758829Srie * To improve elf performance, we first compute the elf hash value and pass 309060758829Srie * it to each find_sym() routine. The elf function will use this value to 309160758829Srie * locate the symbol, the a.out function will simply ignore it. 309260758829Srie */ 309360758829Srie Sym * 30949aa23310Srie lookup_sym(Slookup *slp, Rt_map **dlmp, uint_t *binfo, int *in_nfavl) 309560758829Srie { 309660758829Srie Rt_map *clmp = slp->sl_cmap; 309760758829Srie Sym *rsym = slp->sl_rsym, *sym = 0; 309860758829Srie uchar_t rtype = slp->sl_rtype; 309960758829Srie 310060758829Srie if (slp->sl_hash == 0) 310175e7992aSrie slp->sl_hash = elf_hash(slp->sl_name); 310260758829Srie *binfo = 0; 310360758829Srie 310460758829Srie /* 310560758829Srie * Establish any state that might be associated with a symbol reference. 310660758829Srie */ 310760758829Srie if (rsym) { 310860758829Srie if ((slp->sl_flags & LKUP_STDRELOC) && 310960758829Srie (ELF_ST_BIND(rsym->st_info) == STB_WEAK)) 311060758829Srie slp->sl_flags |= LKUP_WEAK; 311160758829Srie 311260758829Srie if (ELF_ST_VISIBILITY(rsym->st_other) == STV_SINGLETON) 311360758829Srie slp->sl_flags |= LKUP_SINGLETON; 311460758829Srie } 311560758829Srie 311660758829Srie /* 311760758829Srie * Establish any lookup state required for this type of relocation. 311860758829Srie */ 311960758829Srie if ((slp->sl_flags & LKUP_STDRELOC) && rtype) { 312060758829Srie if (rtype == M_R_COPY) 312160758829Srie slp->sl_flags |= LKUP_COPY; 312260758829Srie 312360758829Srie if (rtype != M_R_JMP_SLOT) 312460758829Srie slp->sl_flags |= LKUP_SPEC; 312560758829Srie } 312660758829Srie 312760758829Srie /* 312860758829Srie * Under ldd -w, any unresolved weak references are diagnosed. Set the 312960758829Srie * symbol binding as global to trigger a relocation error if the symbol 313060758829Srie * can not be found. 313160758829Srie */ 313260758829Srie if (rsym) { 313360758829Srie if (LIST(slp->sl_cmap)->lm_flags & LML_FLG_TRC_NOUNRESWEAK) 313460758829Srie slp->sl_bind = STB_GLOBAL; 313560758829Srie else if ((slp->sl_bind = ELF_ST_BIND(rsym->st_info)) == 313660758829Srie STB_WEAK) 313760758829Srie slp->sl_flags |= LKUP_WEAK; 313860758829Srie } 313960758829Srie 314060758829Srie /* 314160758829Srie * Carry out an initial symbol search. This search takes into account 314260758829Srie * all the modes of the requested search. 314360758829Srie */ 31449aa23310Srie if (((sym = _lookup_sym(slp, dlmp, binfo, in_nfavl)) == NULL) && 314560758829Srie (*binfo & BINFO_REJSINGLE)) { 314660758829Srie Slookup sl = *slp; 314760758829Srie 314860758829Srie /* 314960758829Srie * If a binding has been rejected because of binding to a 315060758829Srie * singleton without going through a singleton search, then 315160758829Srie * reset the lookup data, and try again. 315260758829Srie */ 315360758829Srie sl.sl_imap = LIST(sl.sl_cmap)->lm_head; 315460758829Srie sl.sl_flags &= ~(LKUP_FIRST | LKUP_SELF | LKUP_NEXT); 315560758829Srie sl.sl_flags |= LKUP_SINGLETON; 315660758829Srie sl.sl_rsymndx = 0; 315760758829Srie *binfo &= ~BINFO_REJECTED; 31589aa23310Srie sym = _lookup_sym(&sl, dlmp, binfo, in_nfavl); 315960758829Srie } 31607c478bd9Sstevel@tonic-gate 31617c478bd9Sstevel@tonic-gate /* 31627c478bd9Sstevel@tonic-gate * If the caller is restricted to a symbol search within its group, 31637c478bd9Sstevel@tonic-gate * determine if it is necessary to follow a binding from outside of 31647c478bd9Sstevel@tonic-gate * the group. 31657c478bd9Sstevel@tonic-gate */ 3166adbfe822Srie if ((MODE(clmp) & (RTLD_GROUP | RTLD_WORLD)) == RTLD_GROUP) { 3167aa736cbeSrie Sym *isym; 31687c478bd9Sstevel@tonic-gate 3169adbfe822Srie if ((isym = lookup_sym_interpose(slp, dlmp, binfo, sym, 3170adbfe822Srie in_nfavl)) != 0) 31717c478bd9Sstevel@tonic-gate return (isym); 31727c478bd9Sstevel@tonic-gate } 31737c478bd9Sstevel@tonic-gate return (sym); 31747c478bd9Sstevel@tonic-gate } 31757c478bd9Sstevel@tonic-gate 31767c478bd9Sstevel@tonic-gate /* 31777c478bd9Sstevel@tonic-gate * Associate a binding descriptor with a caller and its dependency, or update 31787c478bd9Sstevel@tonic-gate * an existing descriptor. 31797c478bd9Sstevel@tonic-gate */ 31807c478bd9Sstevel@tonic-gate int 31815aefb655Srie bind_one(Rt_map *clmp, Rt_map *dlmp, uint_t flags) 31827c478bd9Sstevel@tonic-gate { 3183cce0e03bSab Bnd_desc *bdp; 3184cce0e03bSab Aliste idx; 31857c478bd9Sstevel@tonic-gate int found = ALE_CREATE; 31867c478bd9Sstevel@tonic-gate 31877c478bd9Sstevel@tonic-gate /* 31887c478bd9Sstevel@tonic-gate * Determine whether a binding descriptor already exists between the 31897c478bd9Sstevel@tonic-gate * two objects. 31907c478bd9Sstevel@tonic-gate */ 3191cce0e03bSab for (APLIST_TRAVERSE(DEPENDS(clmp), idx, bdp)) { 31927c478bd9Sstevel@tonic-gate if (bdp->b_depend == dlmp) { 31937c478bd9Sstevel@tonic-gate found = ALE_EXISTS; 31947c478bd9Sstevel@tonic-gate break; 31957c478bd9Sstevel@tonic-gate } 31967c478bd9Sstevel@tonic-gate } 31977c478bd9Sstevel@tonic-gate 31987c478bd9Sstevel@tonic-gate if (found == ALE_CREATE) { 31997c478bd9Sstevel@tonic-gate /* 32007c478bd9Sstevel@tonic-gate * Create a new binding descriptor. 32017c478bd9Sstevel@tonic-gate */ 32027c478bd9Sstevel@tonic-gate if ((bdp = malloc(sizeof (Bnd_desc))) == 0) 32037c478bd9Sstevel@tonic-gate return (0); 32047c478bd9Sstevel@tonic-gate 32057c478bd9Sstevel@tonic-gate bdp->b_caller = clmp; 32067c478bd9Sstevel@tonic-gate bdp->b_depend = dlmp; 32077c478bd9Sstevel@tonic-gate bdp->b_flags = 0; 32087c478bd9Sstevel@tonic-gate 32097c478bd9Sstevel@tonic-gate /* 32107c478bd9Sstevel@tonic-gate * Append the binding descriptor to the caller and the 32117c478bd9Sstevel@tonic-gate * dependency. 32127c478bd9Sstevel@tonic-gate */ 3213cce0e03bSab if (aplist_append(&DEPENDS(clmp), bdp, AL_CNT_DEPENDS) == 0) 32147c478bd9Sstevel@tonic-gate return (0); 32157c478bd9Sstevel@tonic-gate 3216cce0e03bSab if (aplist_append(&CALLERS(dlmp), bdp, AL_CNT_CALLERS) == 0) 32177c478bd9Sstevel@tonic-gate return (0); 32187c478bd9Sstevel@tonic-gate } 32197c478bd9Sstevel@tonic-gate 32207c478bd9Sstevel@tonic-gate if ((found == ALE_CREATE) || ((bdp->b_flags & flags) != flags)) { 32217c478bd9Sstevel@tonic-gate bdp->b_flags |= flags; 32227c478bd9Sstevel@tonic-gate 32237c478bd9Sstevel@tonic-gate if (flags & BND_REFER) 32247c478bd9Sstevel@tonic-gate FLAGS1(dlmp) |= FL1_RT_USED; 32257c478bd9Sstevel@tonic-gate 32265aefb655Srie DBG_CALL(Dbg_file_bind_entry(LIST(clmp), bdp)); 32277c478bd9Sstevel@tonic-gate } 32287c478bd9Sstevel@tonic-gate return (found); 32297c478bd9Sstevel@tonic-gate } 32307c478bd9Sstevel@tonic-gate 32317c478bd9Sstevel@tonic-gate /* 32327c478bd9Sstevel@tonic-gate * Cleanup after relocation processing. 32337c478bd9Sstevel@tonic-gate */ 32347c478bd9Sstevel@tonic-gate int 3235cce0e03bSab relocate_finish(Rt_map *lmp, APlist *bound, int textrel, int ret) 32367c478bd9Sstevel@tonic-gate { 32375aefb655Srie DBG_CALL(Dbg_reloc_run(lmp, 0, ret, DBG_REL_FINISH)); 32387c478bd9Sstevel@tonic-gate 32397c478bd9Sstevel@tonic-gate /* 32407c478bd9Sstevel@tonic-gate * Establish bindings to all objects that have been bound to. 32417c478bd9Sstevel@tonic-gate */ 32427c478bd9Sstevel@tonic-gate if (bound) { 3243cce0e03bSab Aliste idx; 3244cce0e03bSab Rt_map *_lmp; 32458a20d9f8Srie Word used; 32467c478bd9Sstevel@tonic-gate 32478a20d9f8Srie /* 32488a20d9f8Srie * Only create bindings if the callers relocation was 32498a20d9f8Srie * successful (ret != 0), otherwise the object will eventually 32508a20d9f8Srie * be torn down. Create these bindings if running under ldd(1) 32518a20d9f8Srie * with the -U/-u options regardless of relocation errors, as 32528a20d9f8Srie * the unused processing needs to traverse these bindings to 32538a20d9f8Srie * diagnose unused objects. 32548a20d9f8Srie */ 32558a20d9f8Srie used = LIST(lmp)->lm_flags & 32568a20d9f8Srie (LML_FLG_TRC_UNREF | LML_FLG_TRC_UNUSED); 32578a20d9f8Srie 32588a20d9f8Srie if (ret || used) { 3259cce0e03bSab for (APLIST_TRAVERSE(bound, idx, _lmp)) { 32608a20d9f8Srie if (bind_one(lmp, _lmp, BND_REFER) || used) 32618a20d9f8Srie continue; 32628a20d9f8Srie 32638a20d9f8Srie ret = 0; 32648a20d9f8Srie break; 32657c478bd9Sstevel@tonic-gate } 32667c478bd9Sstevel@tonic-gate } 32677c478bd9Sstevel@tonic-gate free(bound); 32687c478bd9Sstevel@tonic-gate } 32697c478bd9Sstevel@tonic-gate 32707c478bd9Sstevel@tonic-gate /* 32717c478bd9Sstevel@tonic-gate * If we write enabled the text segment to perform these relocations 32727c478bd9Sstevel@tonic-gate * re-protect by disabling writes. 32737c478bd9Sstevel@tonic-gate */ 32747c478bd9Sstevel@tonic-gate if (textrel) 32757c478bd9Sstevel@tonic-gate (void) LM_SET_PROT(lmp)(lmp, 0); 32767c478bd9Sstevel@tonic-gate 32777c478bd9Sstevel@tonic-gate return (ret); 32787c478bd9Sstevel@tonic-gate } 3279