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 /* 237c478bd9Sstevel@tonic-gate * Copyright (c) 1988 AT&T 247c478bd9Sstevel@tonic-gate * All Rights Reserved 257c478bd9Sstevel@tonic-gate * 26cce0e03bSab196087 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 277c478bd9Sstevel@tonic-gate * Use is subject to license terms. 287c478bd9Sstevel@tonic-gate */ 297c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 307c478bd9Sstevel@tonic-gate 317c478bd9Sstevel@tonic-gate #include "_synonyms.h" 327c478bd9Sstevel@tonic-gate 337c478bd9Sstevel@tonic-gate #include <string.h> 347c478bd9Sstevel@tonic-gate #include <stdio.h> 357c478bd9Sstevel@tonic-gate #include <unistd.h> 367c478bd9Sstevel@tonic-gate #include <sys/stat.h> 377c478bd9Sstevel@tonic-gate #include <sys/mman.h> 387c478bd9Sstevel@tonic-gate #include <fcntl.h> 397c478bd9Sstevel@tonic-gate #include <limits.h> 407c478bd9Sstevel@tonic-gate #include <dlfcn.h> 417c478bd9Sstevel@tonic-gate #include <errno.h> 427c478bd9Sstevel@tonic-gate #include <link.h> 435aefb655Srie #include <debug.h> 445aefb655Srie #include <conv.h> 457c478bd9Sstevel@tonic-gate #include "_rtld.h" 467c478bd9Sstevel@tonic-gate #include "_audit.h" 477c478bd9Sstevel@tonic-gate #include "_elf.h" 487c478bd9Sstevel@tonic-gate #include "msg.h" 497c478bd9Sstevel@tonic-gate 507c478bd9Sstevel@tonic-gate static Fct *vector[] = { 517c478bd9Sstevel@tonic-gate &elf_fct, 527c478bd9Sstevel@tonic-gate #ifdef A_OUT 537c478bd9Sstevel@tonic-gate &aout_fct, 547c478bd9Sstevel@tonic-gate #endif 557c478bd9Sstevel@tonic-gate 0 567c478bd9Sstevel@tonic-gate }; 577c478bd9Sstevel@tonic-gate 587c478bd9Sstevel@tonic-gate /* 597c478bd9Sstevel@tonic-gate * If a load filter flag is in effect, and this object is a filter, trigger the 607c478bd9Sstevel@tonic-gate * loading of all its filtees. The load filter flag is in effect when creating 617c478bd9Sstevel@tonic-gate * configuration files, or when under the control of ldd(1), or the LD_LOADFLTR 627c478bd9Sstevel@tonic-gate * environment variable is set, or this object was built with the -zloadfltr 637c478bd9Sstevel@tonic-gate * flag. Otherwise, filtee loading is deferred until triggered by a relocation. 647c478bd9Sstevel@tonic-gate */ 657c478bd9Sstevel@tonic-gate static void 667c478bd9Sstevel@tonic-gate load_filtees(Rt_map *lmp) 677c478bd9Sstevel@tonic-gate { 687c478bd9Sstevel@tonic-gate if ((FLAGS1(lmp) & MSK_RT_FILTER) && 697c478bd9Sstevel@tonic-gate ((FLAGS(lmp) & FLG_RT_LOADFLTR) || 707c478bd9Sstevel@tonic-gate (LIST(lmp)->lm_tflags & LML_TFLG_LOADFLTR))) { 717c478bd9Sstevel@tonic-gate Dyninfo *dip = DYNINFO(lmp); 727c478bd9Sstevel@tonic-gate uint_t cnt, max = DYNINFOCNT(lmp); 737c478bd9Sstevel@tonic-gate Slookup sl; 747c478bd9Sstevel@tonic-gate 7575e7992aSrie /* 7675e7992aSrie * Initialize the symbol lookup data structure. 7775e7992aSrie */ 7875e7992aSrie SLOOKUP_INIT(sl, 0, lmp, lmp, ld_entry_cnt, 0, 0, 0, 0, 0); 797c478bd9Sstevel@tonic-gate 807c478bd9Sstevel@tonic-gate for (cnt = 0; cnt < max; cnt++, dip++) { 817c478bd9Sstevel@tonic-gate if (((dip->di_flags & MSK_DI_FILTER) == 0) || 827c478bd9Sstevel@tonic-gate ((dip->di_flags & FLG_DI_AUXFLTR) && 837c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_NOAUXFLTR))) 847c478bd9Sstevel@tonic-gate continue; 857c478bd9Sstevel@tonic-gate (void) elf_lookup_filtee(&sl, 0, 0, cnt); 867c478bd9Sstevel@tonic-gate } 877c478bd9Sstevel@tonic-gate } 887c478bd9Sstevel@tonic-gate } 897c478bd9Sstevel@tonic-gate 907c478bd9Sstevel@tonic-gate /* 917c478bd9Sstevel@tonic-gate * Analyze one or more link-maps of a link map control list. This routine is 927c478bd9Sstevel@tonic-gate * called at startup to continue the processing of the main executable. It is 937c478bd9Sstevel@tonic-gate * also called each time a new set of objects are loaded, ie. from filters, 947c478bd9Sstevel@tonic-gate * lazy-loaded objects, or dlopen(). 957c478bd9Sstevel@tonic-gate * 967c478bd9Sstevel@tonic-gate * In each instance we traverse the link-map control list starting with the 977c478bd9Sstevel@tonic-gate * initial object. As dependencies are analyzed they are added to the link-map 987c478bd9Sstevel@tonic-gate * control list. Thus the list grows as we traverse it - this results in the 997c478bd9Sstevel@tonic-gate * breadth first ordering of all needed objects. 1007c478bd9Sstevel@tonic-gate */ 1017c478bd9Sstevel@tonic-gate int 1027c478bd9Sstevel@tonic-gate analyze_lmc(Lm_list *lml, Aliste nlmco, Rt_map *nlmp) 1037c478bd9Sstevel@tonic-gate { 1047c478bd9Sstevel@tonic-gate Rt_map *lmp = nlmp; 1057c478bd9Sstevel@tonic-gate Lm_cntl *nlmc; 1067c478bd9Sstevel@tonic-gate int ret = 1; 1077c478bd9Sstevel@tonic-gate 1087c478bd9Sstevel@tonic-gate /* 1097c478bd9Sstevel@tonic-gate * If this link-map control list is being analyzed, return. The object 1107c478bd9Sstevel@tonic-gate * that has just been added will be picked up by the existing analysis 1117c478bd9Sstevel@tonic-gate * thread. Note, this is only really meaningful during process init- 1127c478bd9Sstevel@tonic-gate * ialization, as objects are added to the main link-map control list. 1137c478bd9Sstevel@tonic-gate * Following this initialization, each family of objects that are loaded 1147c478bd9Sstevel@tonic-gate * are added to a new link-map control list. 1157c478bd9Sstevel@tonic-gate */ 1167c478bd9Sstevel@tonic-gate /* LINTED */ 117cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 1187c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_ANALYZING) 1197c478bd9Sstevel@tonic-gate return (1); 1207c478bd9Sstevel@tonic-gate 1217c478bd9Sstevel@tonic-gate /* 1227c478bd9Sstevel@tonic-gate * If this object doesn't belong to the present link-map control list 1237c478bd9Sstevel@tonic-gate * then it must already have been analyzed, or it is in the process of 1247c478bd9Sstevel@tonic-gate * being analyzed prior to us recursing into this analysis. In either 1257c478bd9Sstevel@tonic-gate * case, ignore the object as it's already being taken care of. 1267c478bd9Sstevel@tonic-gate */ 1277c478bd9Sstevel@tonic-gate if (nlmco != CNTL(nlmp)) 1287c478bd9Sstevel@tonic-gate return (1); 1297c478bd9Sstevel@tonic-gate 1307c478bd9Sstevel@tonic-gate nlmc->lc_flags |= LMC_FLG_ANALYZING; 1317c478bd9Sstevel@tonic-gate 1327c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 1337c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & 1347c478bd9Sstevel@tonic-gate (FLG_RT_ANALZING | FLG_RT_ANALYZED | FLG_RT_DELETE)) 1357c478bd9Sstevel@tonic-gate continue; 1367c478bd9Sstevel@tonic-gate 1377c478bd9Sstevel@tonic-gate /* 1387c478bd9Sstevel@tonic-gate * Indicate that analyzing is under way. 1397c478bd9Sstevel@tonic-gate */ 1407c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_ANALZING; 1417c478bd9Sstevel@tonic-gate 1427c478bd9Sstevel@tonic-gate /* 1437c478bd9Sstevel@tonic-gate * If this link map represents a relocatable object, then we 1447c478bd9Sstevel@tonic-gate * need to finish the link-editing of the object at this point. 1457c478bd9Sstevel@tonic-gate */ 1467c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_OBJECT) { 1477c478bd9Sstevel@tonic-gate if (elf_obj_fini(lml, lmp) == 0) { 1487c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) 1497c478bd9Sstevel@tonic-gate continue; 1507c478bd9Sstevel@tonic-gate ret = 0; 1517c478bd9Sstevel@tonic-gate break; 1527c478bd9Sstevel@tonic-gate } 1537c478bd9Sstevel@tonic-gate } 1547c478bd9Sstevel@tonic-gate 1557c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_analyze(lmp)); 1567c478bd9Sstevel@tonic-gate 1577c478bd9Sstevel@tonic-gate /* 1587c478bd9Sstevel@tonic-gate * Establish any dependencies this object requires. 1597c478bd9Sstevel@tonic-gate */ 1607c478bd9Sstevel@tonic-gate if (LM_NEEDED(lmp)(lml, nlmco, lmp) == 0) { 1617c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) 1627c478bd9Sstevel@tonic-gate continue; 1637c478bd9Sstevel@tonic-gate ret = 0; 1647c478bd9Sstevel@tonic-gate break; 1657c478bd9Sstevel@tonic-gate } 1667c478bd9Sstevel@tonic-gate 1677c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_ANALZING; 1687c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_ANALYZED; 1697c478bd9Sstevel@tonic-gate 1707c478bd9Sstevel@tonic-gate /* 1717c478bd9Sstevel@tonic-gate * If we're building a configuration file, determine if this 1727c478bd9Sstevel@tonic-gate * object is a filter and if so load its filtees. This 1737c478bd9Sstevel@tonic-gate * traversal is only necessary for crle(1), as typical use of 1747c478bd9Sstevel@tonic-gate * an object will load filters as part of relocation processing. 1757c478bd9Sstevel@tonic-gate */ 1767c478bd9Sstevel@tonic-gate if (MODE(nlmp) & RTLD_CONFGEN) 1777c478bd9Sstevel@tonic-gate load_filtees(lmp); 1787c478bd9Sstevel@tonic-gate 1797c478bd9Sstevel@tonic-gate /* 1807c478bd9Sstevel@tonic-gate * If an interposer has been added, it will have been inserted 1817c478bd9Sstevel@tonic-gate * in the link-map before the link we're presently analyzing. 1827c478bd9Sstevel@tonic-gate * Break out of this analysis loop and return to the head of 1837c478bd9Sstevel@tonic-gate * the link-map control list to analyze the interposer. Note 1847c478bd9Sstevel@tonic-gate * that this rescan preserves the breadth first loading of 1857c478bd9Sstevel@tonic-gate * dependencies. 1867c478bd9Sstevel@tonic-gate */ 18724a6229eSrie /* LINTED */ 188cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 1897c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_REANALYZE) { 1907c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_REANALYZE; 1917c478bd9Sstevel@tonic-gate lmp = nlmc->lc_head; 1927c478bd9Sstevel@tonic-gate } 1937c478bd9Sstevel@tonic-gate } 1947c478bd9Sstevel@tonic-gate 19524a6229eSrie /* LINTED */ 196cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 1977c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_ANALYZING; 1987c478bd9Sstevel@tonic-gate 1997c478bd9Sstevel@tonic-gate return (ret); 2007c478bd9Sstevel@tonic-gate } 2017c478bd9Sstevel@tonic-gate 2027c478bd9Sstevel@tonic-gate /* 2037c478bd9Sstevel@tonic-gate * Copy relocation test. If the symbol definition is within .bss, then it's 2047c478bd9Sstevel@tonic-gate * zero filled, and as the destination is within .bss, we can skip copying 2057c478bd9Sstevel@tonic-gate * zero's to zero's. However, if the destination object has a MOVE table, it's 2067c478bd9Sstevel@tonic-gate * .bss might contain non-zero data, in which case copy it regardless. 2077c478bd9Sstevel@tonic-gate */ 2087c478bd9Sstevel@tonic-gate static int 2097c478bd9Sstevel@tonic-gate copy_zerobits(Rt_map *dlmp, Sym *dsym) 2107c478bd9Sstevel@tonic-gate { 2117c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & FLG_RT_MOVE) == 0) { 2127c478bd9Sstevel@tonic-gate Mmap *mmaps; 2137c478bd9Sstevel@tonic-gate caddr_t daddr = (caddr_t)dsym->st_value; 2147c478bd9Sstevel@tonic-gate 2157c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & FLG_RT_FIXED) == 0) 2167c478bd9Sstevel@tonic-gate daddr += ADDR(dlmp); 2177c478bd9Sstevel@tonic-gate 2187c478bd9Sstevel@tonic-gate for (mmaps = MMAPS(dlmp); mmaps->m_vaddr; mmaps++) { 2197c478bd9Sstevel@tonic-gate if ((mmaps->m_fsize != mmaps->m_msize) && 2207c478bd9Sstevel@tonic-gate (daddr >= (mmaps->m_vaddr + mmaps->m_fsize)) && 2217c478bd9Sstevel@tonic-gate (daddr < (mmaps->m_vaddr + mmaps->m_msize))) 2227c478bd9Sstevel@tonic-gate return (1); 2237c478bd9Sstevel@tonic-gate } 2247c478bd9Sstevel@tonic-gate } 2257c478bd9Sstevel@tonic-gate return (0); 2267c478bd9Sstevel@tonic-gate } 2277c478bd9Sstevel@tonic-gate 2287c478bd9Sstevel@tonic-gate /* 2297c478bd9Sstevel@tonic-gate * Relocate an individual object. 2307c478bd9Sstevel@tonic-gate */ 2317c478bd9Sstevel@tonic-gate static int 2327c478bd9Sstevel@tonic-gate relocate_so(Lm_list *lml, Rt_map *lmp, int *relocated, int now) 2337c478bd9Sstevel@tonic-gate { 2347c478bd9Sstevel@tonic-gate /* 2357c478bd9Sstevel@tonic-gate * If we're running under ldd(1), and haven't been asked to trace any 2367c478bd9Sstevel@tonic-gate * warnings, skip any actual relocation processing. 2377c478bd9Sstevel@tonic-gate */ 2387c478bd9Sstevel@tonic-gate if (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 2397c478bd9Sstevel@tonic-gate (lml->lm_flags & LML_FLG_TRC_WARN)) { 2407c478bd9Sstevel@tonic-gate 2417c478bd9Sstevel@tonic-gate if (relocated) 2427c478bd9Sstevel@tonic-gate (*relocated)++; 2437c478bd9Sstevel@tonic-gate 2447c478bd9Sstevel@tonic-gate if ((LM_RELOC(lmp)(lmp, now) == 0) && 2457c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0)) 2467c478bd9Sstevel@tonic-gate return (0); 2477c478bd9Sstevel@tonic-gate } 2487c478bd9Sstevel@tonic-gate return (1); 2497c478bd9Sstevel@tonic-gate } 2507c478bd9Sstevel@tonic-gate 2517c478bd9Sstevel@tonic-gate /* 2527c478bd9Sstevel@tonic-gate * Relocate the objects on a link-map control list. 2537c478bd9Sstevel@tonic-gate */ 2547c478bd9Sstevel@tonic-gate static int 2557c478bd9Sstevel@tonic-gate _relocate_lmc(Lm_list *lml, Rt_map *nlmp, int *relocated) 2567c478bd9Sstevel@tonic-gate { 2577c478bd9Sstevel@tonic-gate Rt_map *lmp; 2587c478bd9Sstevel@tonic-gate 2597c478bd9Sstevel@tonic-gate for (lmp = nlmp; lmp; lmp = (Rt_map *)NEXT(lmp)) { 2607c478bd9Sstevel@tonic-gate /* 2617c478bd9Sstevel@tonic-gate * If this object has already been relocated, we're done. If 2627c478bd9Sstevel@tonic-gate * this object is being deleted, skip it, there's probably a 2637c478bd9Sstevel@tonic-gate * relocation error somewhere that's causing this deletion. 2647c478bd9Sstevel@tonic-gate */ 2657c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & 2667c478bd9Sstevel@tonic-gate (FLG_RT_RELOCING | FLG_RT_RELOCED | FLG_RT_DELETE)) 2677c478bd9Sstevel@tonic-gate continue; 2687c478bd9Sstevel@tonic-gate 2697c478bd9Sstevel@tonic-gate /* 2707c478bd9Sstevel@tonic-gate * Indicate that relocation processing is under way. 2717c478bd9Sstevel@tonic-gate */ 2727c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_RELOCING; 2737c478bd9Sstevel@tonic-gate 2747c478bd9Sstevel@tonic-gate /* 2757c478bd9Sstevel@tonic-gate * Relocate the object. 2767c478bd9Sstevel@tonic-gate */ 2777c478bd9Sstevel@tonic-gate if (relocate_so(lml, lmp, relocated, 0) == 0) 2787c478bd9Sstevel@tonic-gate return (0); 2797c478bd9Sstevel@tonic-gate 2807c478bd9Sstevel@tonic-gate /* 2817c478bd9Sstevel@tonic-gate * Indicate that the objects relocation is complete. 2827c478bd9Sstevel@tonic-gate */ 2837c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_RELOCING; 2847c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_RELOCED; 2857c478bd9Sstevel@tonic-gate 2867c478bd9Sstevel@tonic-gate /* 2877c478bd9Sstevel@tonic-gate * Mark this object's init is available for harvesting. Under 2887c478bd9Sstevel@tonic-gate * ldd(1) this marking is necessary for -i (tsort) gathering. 2897c478bd9Sstevel@tonic-gate */ 2907c478bd9Sstevel@tonic-gate lml->lm_init++; 291dffec89cSrie lml->lm_flags |= LML_FLG_OBJADDED; 2927c478bd9Sstevel@tonic-gate 2937c478bd9Sstevel@tonic-gate /* 29410a4fa49Srie * Process any move data (not necessary under ldd()). 2957c478bd9Sstevel@tonic-gate */ 29610a4fa49Srie if ((FLAGS(lmp) & FLG_RT_MOVE) && 29710a4fa49Srie ((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0)) 2987c478bd9Sstevel@tonic-gate move_data(lmp); 2997c478bd9Sstevel@tonic-gate 3007c478bd9Sstevel@tonic-gate /* 3017c478bd9Sstevel@tonic-gate * Determine if this object is a filter, and if a load filter 3027c478bd9Sstevel@tonic-gate * flag is in effect, trigger the loading of all its filtees. 3037c478bd9Sstevel@tonic-gate */ 3047c478bd9Sstevel@tonic-gate load_filtees(lmp); 3057c478bd9Sstevel@tonic-gate } 3067c478bd9Sstevel@tonic-gate 3077c478bd9Sstevel@tonic-gate /* 3087c478bd9Sstevel@tonic-gate * Perform special copy relocations. These are only meaningful for 3097c478bd9Sstevel@tonic-gate * dynamic executables (fixed and head of their link-map list). If 3107c478bd9Sstevel@tonic-gate * this ever has to change then the infrastructure of COPY() has to 311cce0e03bSab196087 * change. Presently, a given link map can only have a receiver or 312cce0e03bSab196087 * supplier of copy data, so a union is used to overlap the storage 313cce0e03bSab196087 * for the COPY_R() and COPY_S() lists. These lists would need to 314cce0e03bSab196087 * be separated. 3157c478bd9Sstevel@tonic-gate */ 3167c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_FIXED) && (nlmp == LIST(nlmp)->lm_head) && 3177c478bd9Sstevel@tonic-gate (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 3187c478bd9Sstevel@tonic-gate (lml->lm_flags & LML_FLG_TRC_WARN))) { 319cce0e03bSab196087 Rt_map *lmp; 320cce0e03bSab196087 Aliste idx1; 3217c478bd9Sstevel@tonic-gate Word tracing; 3227c478bd9Sstevel@tonic-gate 32302ca3e02Srie #if defined(__i386) 3247c478bd9Sstevel@tonic-gate if (elf_copy_gen(nlmp) == 0) 3257c478bd9Sstevel@tonic-gate return (0); 3267c478bd9Sstevel@tonic-gate #endif 327cce0e03bSab196087 if (COPY_S(nlmp) == NULL) 3287c478bd9Sstevel@tonic-gate return (1); 3297c478bd9Sstevel@tonic-gate 3307c478bd9Sstevel@tonic-gate if ((LIST(nlmp)->lm_flags & LML_FLG_TRC_ENABLE) && 3317c478bd9Sstevel@tonic-gate (((rtld_flags & RT_FL_SILENCERR) == 0) || 3327c478bd9Sstevel@tonic-gate (LIST(nlmp)->lm_flags & LML_FLG_TRC_VERBOSE))) 3337c478bd9Sstevel@tonic-gate tracing = 1; 3347c478bd9Sstevel@tonic-gate else 3357c478bd9Sstevel@tonic-gate tracing = 0; 3367c478bd9Sstevel@tonic-gate 3375aefb655Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 3387c478bd9Sstevel@tonic-gate 339cce0e03bSab196087 for (APLIST_TRAVERSE(COPY_S(nlmp), idx1, lmp)) { 3407c478bd9Sstevel@tonic-gate Rel_copy *rcp; 341cce0e03bSab196087 Aliste idx2; 3427c478bd9Sstevel@tonic-gate 343cce0e03bSab196087 for (ALIST_TRAVERSE(COPY_R(lmp), idx2, rcp)) { 3447c478bd9Sstevel@tonic-gate int zero; 3457c478bd9Sstevel@tonic-gate 3467c478bd9Sstevel@tonic-gate /* 3477c478bd9Sstevel@tonic-gate * Only copy the bits if it's from non-zero 3487c478bd9Sstevel@tonic-gate * filled memory. 3497c478bd9Sstevel@tonic-gate */ 3507c478bd9Sstevel@tonic-gate zero = copy_zerobits(rcp->r_dlmp, rcp->r_dsym); 3515aefb655Srie DBG_CALL(Dbg_reloc_copy(rcp->r_dlmp, nlmp, 3525aefb655Srie rcp->r_name, zero)); 3537c478bd9Sstevel@tonic-gate if (zero) 3547c478bd9Sstevel@tonic-gate continue; 3557c478bd9Sstevel@tonic-gate 3567c478bd9Sstevel@tonic-gate (void) memcpy(rcp->r_radd, rcp->r_dadd, 3577c478bd9Sstevel@tonic-gate rcp->r_size); 3587c478bd9Sstevel@tonic-gate 3597c478bd9Sstevel@tonic-gate if ((tracing == 0) || ((FLAGS1(rcp->r_dlmp) & 3607c478bd9Sstevel@tonic-gate FL1_RT_DISPREL) == 0)) 3617c478bd9Sstevel@tonic-gate continue; 3627c478bd9Sstevel@tonic-gate 3637c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_REL_CPYDISP), 3647c478bd9Sstevel@tonic-gate demangle(rcp->r_name), NAME(rcp->r_dlmp)); 3657c478bd9Sstevel@tonic-gate } 3667c478bd9Sstevel@tonic-gate } 3677c478bd9Sstevel@tonic-gate 3685aefb655Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 3697c478bd9Sstevel@tonic-gate 370cce0e03bSab196087 free(COPY_S(nlmp)); 371cce0e03bSab196087 COPY_S(nlmp) = 0; 3727c478bd9Sstevel@tonic-gate } 3737c478bd9Sstevel@tonic-gate return (1); 3747c478bd9Sstevel@tonic-gate } 3757c478bd9Sstevel@tonic-gate 3767c478bd9Sstevel@tonic-gate int 37702ca3e02Srie relocate_lmc(Lm_list *lml, Aliste nlmco, Rt_map *clmp, Rt_map *nlmp) 3787c478bd9Sstevel@tonic-gate { 3797c478bd9Sstevel@tonic-gate int lret = 1, pret = 1; 380cce0e03bSab196087 APlist *alp; 3817c478bd9Sstevel@tonic-gate Aliste plmco; 3827c478bd9Sstevel@tonic-gate Lm_cntl *plmc, *nlmc; 3837c478bd9Sstevel@tonic-gate 3847c478bd9Sstevel@tonic-gate /* 3857c478bd9Sstevel@tonic-gate * If this link-map control list is being relocated, return. The object 3867c478bd9Sstevel@tonic-gate * that has just been added will be picked up by the existing relocation 3877c478bd9Sstevel@tonic-gate * thread. Note, this is only really meaningful during process init- 3887c478bd9Sstevel@tonic-gate * ialization, as objects are added to the main link-map control list. 3897c478bd9Sstevel@tonic-gate * Following this initialization, each family of objects that are loaded 3907c478bd9Sstevel@tonic-gate * are added to a new link-map control list. 3917c478bd9Sstevel@tonic-gate */ 3927c478bd9Sstevel@tonic-gate /* LINTED */ 393cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 3947c478bd9Sstevel@tonic-gate 3957c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_RELOCATING) 3967c478bd9Sstevel@tonic-gate return (1); 3977c478bd9Sstevel@tonic-gate 3987c478bd9Sstevel@tonic-gate nlmc->lc_flags |= LMC_FLG_RELOCATING; 3997c478bd9Sstevel@tonic-gate 4007c478bd9Sstevel@tonic-gate /* 4017c478bd9Sstevel@tonic-gate * Relocate one or more link-maps of a link map control list. If this 4027c478bd9Sstevel@tonic-gate * object doesn't belong to the present link-map control list then it 4037c478bd9Sstevel@tonic-gate * must already have been relocated, or it is in the process of being 4047c478bd9Sstevel@tonic-gate * relocated prior to us recursing into this relocation. In either 4057c478bd9Sstevel@tonic-gate * case, ignore the object as it's already being taken care of, however, 4067c478bd9Sstevel@tonic-gate * fall through and capture any relocation promotions that might have 4077c478bd9Sstevel@tonic-gate * been established from the reference mode of this object. 4087c478bd9Sstevel@tonic-gate * 4097c478bd9Sstevel@tonic-gate * If we're generating a configuration file using crle(1), two passes 4107c478bd9Sstevel@tonic-gate * may be involved. Under the first pass, RTLD_CONFGEN is set. Under 4117c478bd9Sstevel@tonic-gate * this pass, crle() loads objects into the process address space. No 4127c478bd9Sstevel@tonic-gate * relocation is necessary at this point, we simply need to analyze the 4137c478bd9Sstevel@tonic-gate * objects to insure any directly bound dependencies, filtees, etc. 4147c478bd9Sstevel@tonic-gate * get loaded. Although we skip the relocation, fall through to insure 4157c478bd9Sstevel@tonic-gate * any control lists are maintained appropriately. 4167c478bd9Sstevel@tonic-gate * 4177c478bd9Sstevel@tonic-gate * If objects are to be dldump(3c)'ed, crle(1) makes a second pass, 4187c478bd9Sstevel@tonic-gate * using RTLD_NOW and RTLD_CONFGEN. The RTLD_NOW effectively carries 4197c478bd9Sstevel@tonic-gate * out the relocations of all loaded objects. 4207c478bd9Sstevel@tonic-gate */ 4217c478bd9Sstevel@tonic-gate if ((nlmco == CNTL(nlmp)) && 4227c478bd9Sstevel@tonic-gate ((MODE(nlmp) & (RTLD_NOW | RTLD_CONFGEN)) != RTLD_CONFGEN)) { 4237c478bd9Sstevel@tonic-gate int relocated = 0; 4247c478bd9Sstevel@tonic-gate 4257c478bd9Sstevel@tonic-gate /* 4267c478bd9Sstevel@tonic-gate * Determine whether the initial link-map control list has 4277c478bd9Sstevel@tonic-gate * started relocation. From this point, should any interposing 4287c478bd9Sstevel@tonic-gate * objects be added to this link-map control list, the objects 4297c478bd9Sstevel@tonic-gate * are demoted to standard objects. Their interposition can't 4307c478bd9Sstevel@tonic-gate * be guaranteed once relocations have been carried out. 4317c478bd9Sstevel@tonic-gate */ 432cce0e03bSab196087 if (nlmco == ALIST_OFF_DATA) 4337c478bd9Sstevel@tonic-gate lml->lm_flags |= LML_FLG_STARTREL; 4347c478bd9Sstevel@tonic-gate 4357c478bd9Sstevel@tonic-gate /* 43602ca3e02Srie * Relocate the link-map control list. Should this relocation 43702ca3e02Srie * fail, clean up this link-map list. Relocations within this 43802ca3e02Srie * list may have required relocation promotions on other lists, 43902ca3e02Srie * so before acting upon these, and possibly adding more objects 44002ca3e02Srie * to the present link-map control list, try and clean up any 44102ca3e02Srie * failed objects now. 4427c478bd9Sstevel@tonic-gate */ 4437c478bd9Sstevel@tonic-gate lret = _relocate_lmc(lml, nlmp, &relocated); 444cce0e03bSab196087 if ((lret == 0) && (nlmco != ALIST_OFF_DATA)) 44502ca3e02Srie remove_lmc(lml, clmp, nlmc, nlmco, NAME(nlmp)); 4467c478bd9Sstevel@tonic-gate } 4477c478bd9Sstevel@tonic-gate 4487c478bd9Sstevel@tonic-gate /* 4497c478bd9Sstevel@tonic-gate * Determine the new, and previous link-map control lists. 4507c478bd9Sstevel@tonic-gate */ 45124a6229eSrie /* LINTED */ 452cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 453cce0e03bSab196087 if (nlmco == ALIST_OFF_DATA) { 4546679fdc0Srie plmco = nlmco; 4557c478bd9Sstevel@tonic-gate plmc = nlmc; 4566679fdc0Srie } else { 4577c478bd9Sstevel@tonic-gate plmco = nlmco - lml->lm_lists->al_size; 4587c478bd9Sstevel@tonic-gate /* LINTED */ 459cce0e03bSab196087 plmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, plmco); 4607c478bd9Sstevel@tonic-gate } 4617c478bd9Sstevel@tonic-gate 4627c478bd9Sstevel@tonic-gate /* 4637c478bd9Sstevel@tonic-gate * Having completed this control list of objects, they can now be bound 4647c478bd9Sstevel@tonic-gate * to from other objects. Move this control list to the control list 4657c478bd9Sstevel@tonic-gate * that precedes it. Although this control list may have only bound to 4667c478bd9Sstevel@tonic-gate * controls lists much higher up the control list stack, it must only 4677c478bd9Sstevel@tonic-gate * be moved up one control list so as to preserve the link-map order 4687c478bd9Sstevel@tonic-gate * that may have already been traversed in search of symbols. 4697c478bd9Sstevel@tonic-gate */ 470cce0e03bSab196087 if (lret && (nlmco != ALIST_OFF_DATA) && nlmc->lc_head) 4717c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 4727c478bd9Sstevel@tonic-gate 4737c478bd9Sstevel@tonic-gate /* 4747c478bd9Sstevel@tonic-gate * Determine whether existing objects that have already been relocated, 4757c478bd9Sstevel@tonic-gate * need any additional relocations performed. This can occur when new 4767c478bd9Sstevel@tonic-gate * objects are loaded with RTLD_NOW, and these new objects have 4777c478bd9Sstevel@tonic-gate * dependencies on objects that are already loaded. Note, that we peel 4787c478bd9Sstevel@tonic-gate * any relocation promotions off of one control list at a time. This 4797c478bd9Sstevel@tonic-gate * prevents relocations from being bound to objects that might yet fail 4807c478bd9Sstevel@tonic-gate * to relocate themselves. 4817c478bd9Sstevel@tonic-gate */ 482cce0e03bSab196087 while ((alp = plmc->lc_now) != NULL) { 483cce0e03bSab196087 Aliste idx; 484cce0e03bSab196087 Rt_map *lmp; 4857c478bd9Sstevel@tonic-gate 4867c478bd9Sstevel@tonic-gate /* 4877c478bd9Sstevel@tonic-gate * Remove the relocation promotion list, as performing more 4887c478bd9Sstevel@tonic-gate * relocations may result in discovering more objects that need 4897c478bd9Sstevel@tonic-gate * promotion. 4907c478bd9Sstevel@tonic-gate */ 491cce0e03bSab196087 plmc->lc_now = NULL; 4927c478bd9Sstevel@tonic-gate 493cce0e03bSab196087 for (APLIST_TRAVERSE(alp, idx, lmp)) { 4947c478bd9Sstevel@tonic-gate /* 4957c478bd9Sstevel@tonic-gate * If the original relocation of the link-map control 4967c478bd9Sstevel@tonic-gate * list failed, or one of the relocation promotions of 4977c478bd9Sstevel@tonic-gate * this loop has failed, demote any pending objects 4987c478bd9Sstevel@tonic-gate * relocation mode. 4997c478bd9Sstevel@tonic-gate */ 5007c478bd9Sstevel@tonic-gate if ((lret == 0) || (pret == 0)) { 5017c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_NOW; 5027c478bd9Sstevel@tonic-gate MODE(lmp) |= RTLD_LAZY; 5037c478bd9Sstevel@tonic-gate continue; 5047c478bd9Sstevel@tonic-gate } 5057c478bd9Sstevel@tonic-gate 5067c478bd9Sstevel@tonic-gate /* 5077c478bd9Sstevel@tonic-gate * If a relocation fails, save the error condition. 5087c478bd9Sstevel@tonic-gate * It's possible that all new objects on the original 5097c478bd9Sstevel@tonic-gate * link-map control list have been relocated 5107c478bd9Sstevel@tonic-gate * successfully, but if the user request requires 5117c478bd9Sstevel@tonic-gate * promoting objects that have already been loaded, we 5127c478bd9Sstevel@tonic-gate * have to indicate that this operation couldn't be 5137c478bd9Sstevel@tonic-gate * performed. The unrelocated objects are in use on 5147c478bd9Sstevel@tonic-gate * another control list, and may continue to be used. 5157c478bd9Sstevel@tonic-gate * If the .plt that resulted in the error is called, 5167c478bd9Sstevel@tonic-gate * then the process will receive a fatal error at that 5177c478bd9Sstevel@tonic-gate * time. But, the .plt may never be called. 5187c478bd9Sstevel@tonic-gate */ 5197c478bd9Sstevel@tonic-gate if (relocate_so(lml, lmp, 0, 1) == 0) 5207c478bd9Sstevel@tonic-gate pret = 0; 5217c478bd9Sstevel@tonic-gate } 5227c478bd9Sstevel@tonic-gate 5237c478bd9Sstevel@tonic-gate /* 5247c478bd9Sstevel@tonic-gate * Having promoted any objects, determine whether additional 5257c478bd9Sstevel@tonic-gate * dependencies were added, and if so move them to the previous 5267c478bd9Sstevel@tonic-gate * link-map control list. 5277c478bd9Sstevel@tonic-gate */ 52824a6229eSrie /* LINTED */ 529cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 53024a6229eSrie /* LINTED */ 531cce0e03bSab196087 plmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, plmco); 532cce0e03bSab196087 if ((nlmco != ALIST_OFF_DATA) && nlmc->lc_head) 5337c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 5348521e5e6Srie free(alp); 5357c478bd9Sstevel@tonic-gate } 5367c478bd9Sstevel@tonic-gate 53724a6229eSrie /* 53802ca3e02Srie * If relocations have been successful, indicate that relocations are 53902ca3e02Srie * no longer active for this control list. Otherwise, leave the 54002ca3e02Srie * relocation flag, as this flag is used to determine the style of 54102ca3e02Srie * cleanup (see remove_lmc()). 54224a6229eSrie */ 54302ca3e02Srie if (lret && pret) { 54424a6229eSrie /* LINTED */ 545cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 5467c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_RELOCATING; 5477c478bd9Sstevel@tonic-gate 5487c478bd9Sstevel@tonic-gate return (1); 54902ca3e02Srie } 55002ca3e02Srie 5517c478bd9Sstevel@tonic-gate return (0); 5527c478bd9Sstevel@tonic-gate } 5537c478bd9Sstevel@tonic-gate 5547c478bd9Sstevel@tonic-gate /* 5557c478bd9Sstevel@tonic-gate * Inherit the first rejection message for possible later diagnostics. 5567c478bd9Sstevel@tonic-gate * 5577c478bd9Sstevel@tonic-gate * Any attempt to process a file that is unsuccessful, should be accompanied 5587c478bd9Sstevel@tonic-gate * with an error diagnostic. However, some operations like searching for a 5597c478bd9Sstevel@tonic-gate * simple filename, involve trying numerous paths, and an error message for each 5607c478bd9Sstevel@tonic-gate * lookup is not required. Although a multiple search can fail, it's possible 5617c478bd9Sstevel@tonic-gate * that a file was found, but was rejected because it was the wrong type. 5627c478bd9Sstevel@tonic-gate * To satisfy these possibilities, the first failure is recorded as a rejection 5637c478bd9Sstevel@tonic-gate * message, and this message is used later for a more specific diagnostic. 5647c478bd9Sstevel@tonic-gate * 5657c478bd9Sstevel@tonic-gate * File searches are focused at load_one(), and from here a rejection descriptor 5667c478bd9Sstevel@tonic-gate * is passed down to various child routines. If these child routines can 5677c478bd9Sstevel@tonic-gate * process multiple files, then they will maintain their own rejection desc- 5687c478bd9Sstevel@tonic-gate * riptor. This is filled in for any failures, and a diagnostic produced to 5697c478bd9Sstevel@tonic-gate * reflect the failure. The child routines then employ rejection_inherit() to 5707c478bd9Sstevel@tonic-gate * pass the first rejection message back to load_one(). 5717c478bd9Sstevel@tonic-gate * 5727c478bd9Sstevel@tonic-gate * Note that the name, and rejection string must be duplicated, as the name 5737c478bd9Sstevel@tonic-gate * buffer and error string buffer (see conv_ routines) may be reused for 5747c478bd9Sstevel@tonic-gate * additional processing or rejection messages. 5757c478bd9Sstevel@tonic-gate */ 5767c478bd9Sstevel@tonic-gate void 57731fdd7caSab196087 rejection_inherit(Rej_desc *rej1, Rej_desc *rej2) 5787c478bd9Sstevel@tonic-gate { 5797c478bd9Sstevel@tonic-gate if (rej2->rej_type && (rej1->rej_type == 0)) { 5807c478bd9Sstevel@tonic-gate rej1->rej_type = rej2->rej_type; 5817c478bd9Sstevel@tonic-gate rej1->rej_info = rej2->rej_info; 5827c478bd9Sstevel@tonic-gate rej1->rej_flag = rej2->rej_flag; 5837c478bd9Sstevel@tonic-gate if (rej2->rej_name) 5847c478bd9Sstevel@tonic-gate rej1->rej_name = strdup(rej2->rej_name); 5857c478bd9Sstevel@tonic-gate if (rej2->rej_str) { 5868521e5e6Srie if ((rej1->rej_str = strdup(rej2->rej_str)) == NULL) 5877c478bd9Sstevel@tonic-gate rej1->rej_str = MSG_ORIG(MSG_EMG_ENOMEM); 5887c478bd9Sstevel@tonic-gate } 5897c478bd9Sstevel@tonic-gate } 5907c478bd9Sstevel@tonic-gate } 5917c478bd9Sstevel@tonic-gate 5927c478bd9Sstevel@tonic-gate /* 5937c478bd9Sstevel@tonic-gate * Determine the object type of a file. 5947c478bd9Sstevel@tonic-gate */ 5957c478bd9Sstevel@tonic-gate Fct * 5967c478bd9Sstevel@tonic-gate are_u_this(Rej_desc *rej, int fd, struct stat *status, const char *name) 5977c478bd9Sstevel@tonic-gate { 5987c478bd9Sstevel@tonic-gate int i; 5997c478bd9Sstevel@tonic-gate char *maddr = 0; 6007c478bd9Sstevel@tonic-gate 6017c478bd9Sstevel@tonic-gate fmap->fm_fsize = status->st_size; 6027c478bd9Sstevel@tonic-gate 6037c478bd9Sstevel@tonic-gate /* 6047c478bd9Sstevel@tonic-gate * If this is a directory (which can't be mmap()'ed) generate a precise 6057c478bd9Sstevel@tonic-gate * error message. 6067c478bd9Sstevel@tonic-gate */ 6077c478bd9Sstevel@tonic-gate if ((status->st_mode & S_IFMT) == S_IFDIR) { 6087c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 6097c478bd9Sstevel@tonic-gate rej->rej_str = strerror(EISDIR); 6107c478bd9Sstevel@tonic-gate return (0); 6117c478bd9Sstevel@tonic-gate } 6127c478bd9Sstevel@tonic-gate 6137c478bd9Sstevel@tonic-gate /* 6147c478bd9Sstevel@tonic-gate * Map in the first page of the file. When this buffer is first used, 6157c478bd9Sstevel@tonic-gate * the mapping is a single system page. This is typically enough to 6167c478bd9Sstevel@tonic-gate * inspect the ehdr and phdrs of the file, and can be reused for each 6177c478bd9Sstevel@tonic-gate * file that get loaded. If a larger mapping is required to read the 6187c478bd9Sstevel@tonic-gate * ehdr and phdrs, a new mapping is created (see elf_map_it()). This 6197c478bd9Sstevel@tonic-gate * new mapping is again used for each new file loaded. Some objects, 6207c478bd9Sstevel@tonic-gate * such as filters, only take up one page, and in this case this mapping 6217c478bd9Sstevel@tonic-gate * will suffice for the file. 6227c478bd9Sstevel@tonic-gate */ 6237c478bd9Sstevel@tonic-gate maddr = mmap(fmap->fm_maddr, fmap->fm_msize, (PROT_READ | PROT_EXEC), 6247c478bd9Sstevel@tonic-gate fmap->fm_mflags, fd, 0); 6257c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 6267c478bd9Sstevel@tonic-gate if ((maddr == MAP_FAILED) && (errno == EINVAL)) { 6277c478bd9Sstevel@tonic-gate /* 6287c478bd9Sstevel@tonic-gate * If the mapping failed, and we used MAP_ALIGN, assume we're 6297c478bd9Sstevel@tonic-gate * on a system that doesn't support this option. Try again 6307c478bd9Sstevel@tonic-gate * without MAP_ALIGN. 6317c478bd9Sstevel@tonic-gate */ 6327c478bd9Sstevel@tonic-gate if (fmap->fm_mflags & MAP_ALIGN) { 6337c478bd9Sstevel@tonic-gate rtld_flags2 |= RT_FL2_NOMALIGN; 6347c478bd9Sstevel@tonic-gate fmap_setup(); 6357c478bd9Sstevel@tonic-gate 6367c478bd9Sstevel@tonic-gate maddr = (char *)mmap(fmap->fm_maddr, fmap->fm_msize, 6377c478bd9Sstevel@tonic-gate (PROT_READ | PROT_EXEC), fmap->fm_mflags, fd, 0); 6387c478bd9Sstevel@tonic-gate } 6397c478bd9Sstevel@tonic-gate } 6407c478bd9Sstevel@tonic-gate #endif 6417c478bd9Sstevel@tonic-gate if (maddr == MAP_FAILED) { 6427c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 6437c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 6447c478bd9Sstevel@tonic-gate return (0); 6457c478bd9Sstevel@tonic-gate } 6467c478bd9Sstevel@tonic-gate 6477c478bd9Sstevel@tonic-gate /* 6487c478bd9Sstevel@tonic-gate * From now on we will re-use fmap->fm_maddr as the mapping address 6497c478bd9Sstevel@tonic-gate * so we augment the flags with MAP_FIXED and drop any MAP_ALIGN. 6507c478bd9Sstevel@tonic-gate */ 6517c478bd9Sstevel@tonic-gate fmap->fm_maddr = maddr; 6527c478bd9Sstevel@tonic-gate fmap->fm_mflags |= MAP_FIXED; 6537c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 6547c478bd9Sstevel@tonic-gate fmap->fm_mflags &= ~MAP_ALIGN; 6557c478bd9Sstevel@tonic-gate #endif 6567c478bd9Sstevel@tonic-gate 6577c478bd9Sstevel@tonic-gate /* 6587c478bd9Sstevel@tonic-gate * Search through the object vectors to determine what kind of 6597c478bd9Sstevel@tonic-gate * object we have. 6607c478bd9Sstevel@tonic-gate */ 6617c478bd9Sstevel@tonic-gate for (i = 0; vector[i]; i++) { 6627c478bd9Sstevel@tonic-gate if ((vector[i]->fct_are_u_this)(rej)) 6637c478bd9Sstevel@tonic-gate return (vector[i]); 6647c478bd9Sstevel@tonic-gate else if (rej->rej_type) { 6657c478bd9Sstevel@tonic-gate Rt_map *lmp; 6667c478bd9Sstevel@tonic-gate 6677c478bd9Sstevel@tonic-gate /* 6687c478bd9Sstevel@tonic-gate * If this object is an explicitly defined shared 6697c478bd9Sstevel@tonic-gate * object under inspection by ldd, and contains a 6707c478bd9Sstevel@tonic-gate * incompatible hardware capabilities requirement, then 6717c478bd9Sstevel@tonic-gate * inform the user, but continue processing. 6727c478bd9Sstevel@tonic-gate * 6737c478bd9Sstevel@tonic-gate * XXXX - ldd -v for any rej failure. 6747c478bd9Sstevel@tonic-gate */ 6757c478bd9Sstevel@tonic-gate if ((rej->rej_type == SGS_REJ_HWCAP_1) && 6767c478bd9Sstevel@tonic-gate (lml_main.lm_flags & LML_FLG_TRC_LDDSTUB) && 6777c478bd9Sstevel@tonic-gate ((lmp = lml_main.lm_head) != 0) && 6787c478bd9Sstevel@tonic-gate (FLAGS1(lmp) & FL1_RT_LDDSTUB) && 6797c478bd9Sstevel@tonic-gate (NEXT(lmp) == 0)) { 6807c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_GEN_HWCAP_1), 6817c478bd9Sstevel@tonic-gate name, rej->rej_str); 6827c478bd9Sstevel@tonic-gate return (vector[i]); 6837c478bd9Sstevel@tonic-gate } 6847c478bd9Sstevel@tonic-gate return (0); 6857c478bd9Sstevel@tonic-gate } 6867c478bd9Sstevel@tonic-gate } 6877c478bd9Sstevel@tonic-gate 6887c478bd9Sstevel@tonic-gate /* 6897c478bd9Sstevel@tonic-gate * Unknown file type. 6907c478bd9Sstevel@tonic-gate */ 6917c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_UNKFILE; 6927c478bd9Sstevel@tonic-gate return (0); 6937c478bd9Sstevel@tonic-gate } 6947c478bd9Sstevel@tonic-gate 6957c478bd9Sstevel@tonic-gate /* 6960aa3cd4dSrie * Helper routine for is_so_matched() that consolidates matching a path name, 6970aa3cd4dSrie * or file name component of a link-map name. 6987c478bd9Sstevel@tonic-gate */ 6997c478bd9Sstevel@tonic-gate static int 7000aa3cd4dSrie _is_so_matched(const char *name, const char *str, int path) 7017c478bd9Sstevel@tonic-gate { 7027c478bd9Sstevel@tonic-gate const char *_str; 7037c478bd9Sstevel@tonic-gate 7040aa3cd4dSrie if ((path == 0) && ((_str = strrchr(str, '/')) != NULL)) 7057c478bd9Sstevel@tonic-gate _str++; 7067c478bd9Sstevel@tonic-gate else 7077c478bd9Sstevel@tonic-gate _str = str; 7087c478bd9Sstevel@tonic-gate 7097c478bd9Sstevel@tonic-gate return (strcmp(name, _str)); 7107c478bd9Sstevel@tonic-gate } 7117c478bd9Sstevel@tonic-gate 7120aa3cd4dSrie /* 7130aa3cd4dSrie * Determine whether a search name matches one of the names associated with a 7140aa3cd4dSrie * link-map. A link-map contains several names: 7150aa3cd4dSrie * 7160aa3cd4dSrie * . a NAME() - typically the full pathname of an object that has been 7170aa3cd4dSrie * loaded. For example, when looking for the dependency "libc.so.1", a 7180aa3cd4dSrie * search path is applied, with the eventual NAME() being "/lib/ld.so.1". 7190aa3cd4dSrie * The name of the executable is typically a simple filename, such as 7200aa3cd4dSrie * "main", as this is the name passed to exec() to start the process. 7210aa3cd4dSrie * 7220aa3cd4dSrie * . a PATHNAME() - this is maintained if the resolved NAME() is different 7230aa3cd4dSrie * to NAME(), ie. the original name is a symbolic link. This is also 7240aa3cd4dSrie * the resolved full pathname for a dynamic executable. 7250aa3cd4dSrie * 7260aa3cd4dSrie * . a list of ALIAS() names - these are alternative names by which the 7270aa3cd4dSrie * object has been found, ie. when dependencies are loaded through a 7280aa3cd4dSrie * variety of different symbolic links. 7290aa3cd4dSrie * 7300aa3cd4dSrie * The name pattern matching can differ depending on whether we are looking 7310aa3cd4dSrie * for a full path name (path != 0), or a simple file name (path == 0). Full 7320aa3cd4dSrie * path names typically match NAME() or PATHNAME() entries, so these link-map 7330aa3cd4dSrie * names are inspected first when a full path name is being searched for. 7340aa3cd4dSrie * Simple file names typically match ALIAS() names, so these link-map names are 7350aa3cd4dSrie * inspected first when a simple file name is being searched for. 7360aa3cd4dSrie * 7370aa3cd4dSrie * For all full path name searches, the link-map names are taken as is. For 7380aa3cd4dSrie * simple file name searches, only the file name component of any link-map 7390aa3cd4dSrie * names are used for comparison. 7400aa3cd4dSrie */ 7417c478bd9Sstevel@tonic-gate static Rt_map * 7420aa3cd4dSrie is_so_matched(Rt_map *lmp, const char *name, int path) 7437c478bd9Sstevel@tonic-gate { 744cce0e03bSab196087 Aliste idx; 745cce0e03bSab196087 const char *cp; 7467c478bd9Sstevel@tonic-gate 7477c478bd9Sstevel@tonic-gate /* 7480aa3cd4dSrie * A pathname is typically going to match a NAME() or PATHNAME(), so 7490aa3cd4dSrie * check these first. 7507c478bd9Sstevel@tonic-gate */ 7510aa3cd4dSrie if (path) { 7520aa3cd4dSrie if (strcmp(name, NAME(lmp)) == 0) 7537c478bd9Sstevel@tonic-gate return (lmp); 7547c478bd9Sstevel@tonic-gate 7557c478bd9Sstevel@tonic-gate if (PATHNAME(lmp) != NAME(lmp)) { 7560aa3cd4dSrie if (strcmp(name, PATHNAME(lmp)) == 0) 7577c478bd9Sstevel@tonic-gate return (lmp); 7587c478bd9Sstevel@tonic-gate } 7590aa3cd4dSrie } 7600aa3cd4dSrie 7610aa3cd4dSrie /* 7620aa3cd4dSrie * Typically, dependencies are specified as simple file names 7630aa3cd4dSrie * (DT_NEEDED == libc.so.1), which are expanded to full pathnames to 7640aa3cd4dSrie * open the file. The full pathname is NAME(), and the original name 7650aa3cd4dSrie * is maintained on the ALIAS() list. 7660aa3cd4dSrie * 7670aa3cd4dSrie * If this is a simple filename, or a pathname has failed to match the 7680aa3cd4dSrie * NAME() and PATHNAME() check above, look through the ALIAS() list. 7690aa3cd4dSrie */ 770cce0e03bSab196087 for (APLIST_TRAVERSE(ALIAS(lmp), idx, cp)) { 7710aa3cd4dSrie /* 7720aa3cd4dSrie * If we're looking for a simple filename, _is_so_matched() 7730aa3cd4dSrie * will reduce the ALIAS name to its simple name. 7740aa3cd4dSrie */ 775cce0e03bSab196087 if (_is_so_matched(name, cp, path) == 0) 7760aa3cd4dSrie return (lmp); 7770aa3cd4dSrie } 7780aa3cd4dSrie 7790aa3cd4dSrie /* 7800aa3cd4dSrie * Finally, if this is a simple file name, and any ALIAS() search has 7810aa3cd4dSrie * been completed, match the simple file name of NAME() and PATHNAME(). 7820aa3cd4dSrie */ 7830aa3cd4dSrie if (path == 0) { 7840aa3cd4dSrie if (_is_so_matched(name, NAME(lmp), 0) == 0) 7850aa3cd4dSrie return (lmp); 7860aa3cd4dSrie 7870aa3cd4dSrie if (PATHNAME(lmp) != NAME(lmp)) { 7880aa3cd4dSrie if (_is_so_matched(name, PATHNAME(lmp), 0) == 0) 7890aa3cd4dSrie return (lmp); 7900aa3cd4dSrie } 7910aa3cd4dSrie } 7920aa3cd4dSrie 7937c478bd9Sstevel@tonic-gate return (0); 7947c478bd9Sstevel@tonic-gate } 7957c478bd9Sstevel@tonic-gate 7960aa3cd4dSrie /* 7970aa3cd4dSrie * Files are opened by ld.so.1 to satisfy dependencies, filtees and dlopen() 7980aa3cd4dSrie * requests. Each request investigates the file based upon the callers 7990aa3cd4dSrie * environment, and once a full path name has been established a check is made 8000aa3cd4dSrie * against the FullpathNode AVL tree and a device/inode check, to ensure the 8010aa3cd4dSrie * same file isn't mapped multiple times. See file_open(). 8020aa3cd4dSrie * 8030aa3cd4dSrie * However, there are one of two cases where a test for an existing file name 8040aa3cd4dSrie * needs to be carried out, such as dlopen(NOLOAD) requests, dldump() requests, 8050aa3cd4dSrie * and as a final fallback to dependency loading. These requests are handled 8060aa3cd4dSrie * by is_so_loaded(). 8070aa3cd4dSrie * 8080aa3cd4dSrie * A traversal through the callers link-map list is carried out, and from each 8090aa3cd4dSrie * link-map, a comparison is made against all of the various names by which the 8100aa3cd4dSrie * object has been referenced. The subroutine, is_so_matched() compares the 8110aa3cd4dSrie * link-map names against the name being searched for. Whether the search name 8120aa3cd4dSrie * is a full path name or a simple file name, governs what comparisons are made. 8130aa3cd4dSrie * 8140aa3cd4dSrie * A full path name, which is a fully resolved path name that starts with a "/" 8150aa3cd4dSrie * character, or a relative path name that includes a "/" character, must match 8160aa3cd4dSrie * the link-map names explicitly. A simple file name, which is any name *not* 8170aa3cd4dSrie * containing a "/" character, are matched against the file name component of 8180aa3cd4dSrie * any link-map names. 8190aa3cd4dSrie */ 8207c478bd9Sstevel@tonic-gate Rt_map * 8210aa3cd4dSrie is_so_loaded(Lm_list *lml, const char *name) 8227c478bd9Sstevel@tonic-gate { 8237c478bd9Sstevel@tonic-gate Rt_map *lmp; 8247c478bd9Sstevel@tonic-gate avl_index_t where; 8257c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 826cce0e03bSab196087 Aliste idx; 8270aa3cd4dSrie int path = 0; 8287c478bd9Sstevel@tonic-gate 8297c478bd9Sstevel@tonic-gate /* 8300aa3cd4dSrie * If the name is a full path name, first determine if the path name is 8310aa3cd4dSrie * registered in the FullpathNode AVL tree. 8327c478bd9Sstevel@tonic-gate */ 8330aa3cd4dSrie if ((name[0] == '/') && 8347c478bd9Sstevel@tonic-gate ((lmp = fpavl_loaded(lml, name, &where)) != NULL) && 8357c478bd9Sstevel@tonic-gate ((FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) == 0)) 8367c478bd9Sstevel@tonic-gate return (lmp); 8377c478bd9Sstevel@tonic-gate 8387c478bd9Sstevel@tonic-gate /* 8390aa3cd4dSrie * Determine whether the name is a simple file name, or a path name. 8407c478bd9Sstevel@tonic-gate */ 8410aa3cd4dSrie if (strchr(name, '/')) 8420aa3cd4dSrie path++; 8437c478bd9Sstevel@tonic-gate 8447c478bd9Sstevel@tonic-gate /* 8457c478bd9Sstevel@tonic-gate * Loop through the callers link-map lists. 8467c478bd9Sstevel@tonic-gate */ 847cce0e03bSab196087 for (ALIST_TRAVERSE(lml->lm_lists, idx, lmc)) { 8487c478bd9Sstevel@tonic-gate for (lmp = lmc->lc_head; lmp; lmp = (Rt_map *)NEXT(lmp)) { 8497c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) 8507c478bd9Sstevel@tonic-gate continue; 8517c478bd9Sstevel@tonic-gate 8520aa3cd4dSrie if (is_so_matched(lmp, name, path)) 8537c478bd9Sstevel@tonic-gate return (lmp); 8547c478bd9Sstevel@tonic-gate } 8557c478bd9Sstevel@tonic-gate } 8567c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 8577c478bd9Sstevel@tonic-gate } 8587c478bd9Sstevel@tonic-gate 8597c478bd9Sstevel@tonic-gate /* 8607c478bd9Sstevel@tonic-gate * Tracing is enabled by the LD_TRACE_LOADED_OPTIONS environment variable which 8617c478bd9Sstevel@tonic-gate * is normally set from ldd(1). For each link map we load, print the load name 8627c478bd9Sstevel@tonic-gate * and the full pathname of the shared object. 8637c478bd9Sstevel@tonic-gate */ 8647c478bd9Sstevel@tonic-gate /* ARGSUSED4 */ 8657c478bd9Sstevel@tonic-gate static void 8667c478bd9Sstevel@tonic-gate trace_so(Rt_map *clmp, Rej_desc *rej, const char *name, const char *path, 8677c478bd9Sstevel@tonic-gate int alter, const char *nfound) 8687c478bd9Sstevel@tonic-gate { 8697c478bd9Sstevel@tonic-gate const char *str = MSG_ORIG(MSG_STR_EMPTY); 8707c478bd9Sstevel@tonic-gate const char *reject = MSG_ORIG(MSG_STR_EMPTY); 8717c478bd9Sstevel@tonic-gate char _reject[PATH_MAX]; 8727c478bd9Sstevel@tonic-gate 8737c478bd9Sstevel@tonic-gate /* 8747c478bd9Sstevel@tonic-gate * The first time through trace_so() will only have lddstub on the 8757c478bd9Sstevel@tonic-gate * link-map list and the preloaded shared object is supplied as "path". 8767c478bd9Sstevel@tonic-gate * As we don't want to print this shared object as a dependency, but 8777c478bd9Sstevel@tonic-gate * instead inspect *its* dependencies, return. 8787c478bd9Sstevel@tonic-gate */ 8797c478bd9Sstevel@tonic-gate if (FLAGS1(clmp) & FL1_RT_LDDSTUB) 8807c478bd9Sstevel@tonic-gate return; 8817c478bd9Sstevel@tonic-gate 8827c478bd9Sstevel@tonic-gate /* 8837c478bd9Sstevel@tonic-gate * Without any rejection info, this is a supplied not-found condition. 8847c478bd9Sstevel@tonic-gate */ 8857c478bd9Sstevel@tonic-gate if (rej && (rej->rej_type == 0)) { 8867c478bd9Sstevel@tonic-gate (void) printf(nfound, name); 8877c478bd9Sstevel@tonic-gate return; 8887c478bd9Sstevel@tonic-gate } 8897c478bd9Sstevel@tonic-gate 8907c478bd9Sstevel@tonic-gate /* 8917c478bd9Sstevel@tonic-gate * If rejection information exists then establish what object was 8927c478bd9Sstevel@tonic-gate * found and the reason for its rejection. 8937c478bd9Sstevel@tonic-gate */ 8947c478bd9Sstevel@tonic-gate if (rej) { 895de777a60Sab196087 Conv_reject_desc_buf_t rej_buf; 896de777a60Sab196087 8977c478bd9Sstevel@tonic-gate /* LINTED */ 8987c478bd9Sstevel@tonic-gate (void) snprintf(_reject, PATH_MAX, 899de777a60Sab196087 MSG_INTL(ldd_reject[rej->rej_type]), 900de777a60Sab196087 conv_reject_desc(rej, &rej_buf)); 9017c478bd9Sstevel@tonic-gate if (rej->rej_name) 9027c478bd9Sstevel@tonic-gate path = rej->rej_name; 9037c478bd9Sstevel@tonic-gate reject = (char *)_reject; 9047c478bd9Sstevel@tonic-gate 9057c478bd9Sstevel@tonic-gate /* 9067c478bd9Sstevel@tonic-gate * Was an alternative pathname defined (from a configuration 9077c478bd9Sstevel@tonic-gate * file). 9087c478bd9Sstevel@tonic-gate */ 9097c478bd9Sstevel@tonic-gate if (rej->rej_flag & FLG_FD_ALTER) 9107c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 9117c478bd9Sstevel@tonic-gate } else { 9127c478bd9Sstevel@tonic-gate if (alter) 9137c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 9147c478bd9Sstevel@tonic-gate } 9157c478bd9Sstevel@tonic-gate 9167c478bd9Sstevel@tonic-gate /* 9177c478bd9Sstevel@tonic-gate * If the load name isn't a full pathname print its associated pathname 9187c478bd9Sstevel@tonic-gate * together with all the other information we've gathered. 9197c478bd9Sstevel@tonic-gate */ 9207c478bd9Sstevel@tonic-gate if (*name == '/') 9217c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), path, str, reject); 9227c478bd9Sstevel@tonic-gate else 9237247f888Srie (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), name, path, str, 9247247f888Srie reject); 9257c478bd9Sstevel@tonic-gate } 9267c478bd9Sstevel@tonic-gate 9277c478bd9Sstevel@tonic-gate 9287c478bd9Sstevel@tonic-gate /* 9297c478bd9Sstevel@tonic-gate * Establish a link-map mode, initializing it if it has just been loaded, or 9307c478bd9Sstevel@tonic-gate * potentially updating it if it already exists. 9317c478bd9Sstevel@tonic-gate */ 9327c478bd9Sstevel@tonic-gate int 9337c478bd9Sstevel@tonic-gate update_mode(Rt_map *lmp, int omode, int nmode) 9347c478bd9Sstevel@tonic-gate { 935dffec89cSrie Lm_list *lml = LIST(lmp); 9367c478bd9Sstevel@tonic-gate int pmode = 0; 9377c478bd9Sstevel@tonic-gate 9387c478bd9Sstevel@tonic-gate /* 9397c478bd9Sstevel@tonic-gate * A newly loaded object hasn't had its mode set yet. Modes are used to 9407c478bd9Sstevel@tonic-gate * load dependencies, so don't propagate any parent or no-load flags, as 9417c478bd9Sstevel@tonic-gate * these would adversely affect this objects ability to load any of its 9427c478bd9Sstevel@tonic-gate * dependencies that aren't already loaded. RTLD_FIRST is applicable to 9437c478bd9Sstevel@tonic-gate * this objects handle creation only, and should not be propagated. 9447c478bd9Sstevel@tonic-gate */ 9457c478bd9Sstevel@tonic-gate if ((FLAGS(lmp) & FLG_RT_MODESET) == 0) { 9467c478bd9Sstevel@tonic-gate MODE(lmp) |= nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST); 9477c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_MODESET; 9487c478bd9Sstevel@tonic-gate return (1); 9497c478bd9Sstevel@tonic-gate } 9507c478bd9Sstevel@tonic-gate 9517c478bd9Sstevel@tonic-gate /* 9527c478bd9Sstevel@tonic-gate * Establish any new overriding modes. RTLD_LAZY and RTLD_NOW should be 9537c478bd9Sstevel@tonic-gate * represented individually (this is historic, as these two flags were 9547c478bd9Sstevel@tonic-gate * the only flags originally available to dlopen()). Other flags are 9557c478bd9Sstevel@tonic-gate * accumulative, but have a hierarchy of preference. 9567c478bd9Sstevel@tonic-gate */ 9577c478bd9Sstevel@tonic-gate if ((omode & RTLD_LAZY) && (nmode & RTLD_NOW)) { 9587c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_LAZY; 9597c478bd9Sstevel@tonic-gate pmode |= RTLD_NOW; 9607c478bd9Sstevel@tonic-gate } 9617c478bd9Sstevel@tonic-gate 9627c478bd9Sstevel@tonic-gate pmode |= ((~omode & nmode) & 9637c478bd9Sstevel@tonic-gate (RTLD_GLOBAL | RTLD_WORLD | RTLD_NODELETE)); 9647c478bd9Sstevel@tonic-gate if (pmode) { 9655aefb655Srie DBG_CALL(Dbg_file_mode_promote(lmp, pmode)); 9667c478bd9Sstevel@tonic-gate MODE(lmp) |= pmode; 9677c478bd9Sstevel@tonic-gate } 9687c478bd9Sstevel@tonic-gate 9697c478bd9Sstevel@tonic-gate /* 9707c478bd9Sstevel@tonic-gate * If this load is an RTLD_NOW request and the object has already been 9717c478bd9Sstevel@tonic-gate * loaded non-RTLD_NOW, append this object to the relocation-now list 9727c478bd9Sstevel@tonic-gate * of the objects associated control list. Note, if the object hasn't 9737c478bd9Sstevel@tonic-gate * yet been relocated, setting its MODE() to RTLD_NOW will establish 9747c478bd9Sstevel@tonic-gate * full relocation processing when it eventually gets relocated. 9757c478bd9Sstevel@tonic-gate */ 9767c478bd9Sstevel@tonic-gate if ((pmode & RTLD_NOW) && 9777c478bd9Sstevel@tonic-gate (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))) { 9787c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 9797c478bd9Sstevel@tonic-gate 9807c478bd9Sstevel@tonic-gate /* LINTED */ 981cce0e03bSab196087 lmc = (Lm_cntl *)alist_item_by_offset(LIST(lmp)->lm_lists, 982cce0e03bSab196087 CNTL(lmp)); 983cce0e03bSab196087 (void) aplist_append(&lmc->lc_now, lmp, AL_CNT_LMNOW); 9847c478bd9Sstevel@tonic-gate } 9857c478bd9Sstevel@tonic-gate 9867c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 9877c478bd9Sstevel@tonic-gate /* 9887c478bd9Sstevel@tonic-gate * For patch backward compatibility the following .init collection 9897c478bd9Sstevel@tonic-gate * is disabled. 9907c478bd9Sstevel@tonic-gate */ 9917c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 9927c478bd9Sstevel@tonic-gate return (pmode); 9937c478bd9Sstevel@tonic-gate #endif 9947c478bd9Sstevel@tonic-gate 9957c478bd9Sstevel@tonic-gate /* 996dffec89cSrie * If this objects .init has been collected but has not yet been called, 997dffec89cSrie * it may be necessary to reevaluate the object using tsort(). For 9987c478bd9Sstevel@tonic-gate * example, a new dlopen() hierarchy may bind to uninitialized objects 9997c478bd9Sstevel@tonic-gate * that are already loaded, or a dlopen(RTLD_NOW) can establish new 10007c478bd9Sstevel@tonic-gate * bindings between already loaded objects that require the tsort() 1001dffec89cSrie * information be recomputed. If however, no new objects have been 1002dffec89cSrie * added to the process, and this object hasn't been promoted, don't 1003dffec89cSrie * bother reevaluating the .init. The present tsort() information is 1004dffec89cSrie * probably as accurate as necessary, and by not establishing a parallel 1005dffec89cSrie * tsort() we can help reduce the amount of recursion possible between 1006dffec89cSrie * .inits. 10077c478bd9Sstevel@tonic-gate */ 1008dffec89cSrie if (((FLAGS(lmp) & 1009dffec89cSrie (FLG_RT_INITCLCT | FLG_RT_INITCALL)) == FLG_RT_INITCLCT) && 1010dffec89cSrie ((lml->lm_flags & LML_FLG_OBJADDED) || ((pmode & RTLD_NOW) && 1011dffec89cSrie (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))))) { 10127c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_INITCLCT; 10137c478bd9Sstevel@tonic-gate LIST(lmp)->lm_init++; 1014dffec89cSrie LIST(lmp)->lm_flags |= LML_FLG_OBJREEVAL; 10157c478bd9Sstevel@tonic-gate } 10167c478bd9Sstevel@tonic-gate 10177c478bd9Sstevel@tonic-gate return (pmode); 10187c478bd9Sstevel@tonic-gate } 10197c478bd9Sstevel@tonic-gate 10207c478bd9Sstevel@tonic-gate /* 10217c478bd9Sstevel@tonic-gate * Determine whether an alias name already exists, and if not create one. This 10227c478bd9Sstevel@tonic-gate * is typically used to retain dependency names, such as "libc.so.1", which 10237c478bd9Sstevel@tonic-gate * would have been expanded to full path names when they were loaded. The 10247c478bd9Sstevel@tonic-gate * full path names (NAME() and possibly PATHNAME()) are maintained as Fullpath 10257c478bd9Sstevel@tonic-gate * AVL nodes, and thus would have been matched by fpavl_loaded() during 10267c478bd9Sstevel@tonic-gate * file_open(). 10277c478bd9Sstevel@tonic-gate */ 10287c478bd9Sstevel@tonic-gate int 10297c478bd9Sstevel@tonic-gate append_alias(Rt_map *lmp, const char *str, int *added) 10307c478bd9Sstevel@tonic-gate { 1031cce0e03bSab196087 Aliste idx; 1032cce0e03bSab196087 char *cp; 10337c478bd9Sstevel@tonic-gate 10347c478bd9Sstevel@tonic-gate /* 10357c478bd9Sstevel@tonic-gate * Determine if this filename is already on the alias list. 10367c478bd9Sstevel@tonic-gate */ 1037cce0e03bSab196087 for (APLIST_TRAVERSE(ALIAS(lmp), idx, cp)) { 1038cce0e03bSab196087 if (strcmp(cp, str) == 0) 10397c478bd9Sstevel@tonic-gate return (1); 10407c478bd9Sstevel@tonic-gate } 10417c478bd9Sstevel@tonic-gate 10427c478bd9Sstevel@tonic-gate /* 10437c478bd9Sstevel@tonic-gate * This is a new alias, append it to the alias list. 10447c478bd9Sstevel@tonic-gate */ 10458521e5e6Srie if ((cp = strdup(str)) == NULL) 10467c478bd9Sstevel@tonic-gate return (0); 10477c478bd9Sstevel@tonic-gate 1048cce0e03bSab196087 if (aplist_append(&ALIAS(lmp), cp, AL_CNT_ALIAS) == NULL) { 10497c478bd9Sstevel@tonic-gate free(cp); 10507c478bd9Sstevel@tonic-gate return (0); 10517c478bd9Sstevel@tonic-gate } 10527c478bd9Sstevel@tonic-gate if (added) 10537c478bd9Sstevel@tonic-gate *added = 1; 10547c478bd9Sstevel@tonic-gate return (1); 10557c478bd9Sstevel@tonic-gate } 10567c478bd9Sstevel@tonic-gate 10577c478bd9Sstevel@tonic-gate /* 10587c478bd9Sstevel@tonic-gate * Determine whether a file is already loaded by comparing device and inode 10597c478bd9Sstevel@tonic-gate * values. 10607c478bd9Sstevel@tonic-gate */ 10617c478bd9Sstevel@tonic-gate static Rt_map * 10627c478bd9Sstevel@tonic-gate is_devinode_loaded(struct stat *status, Lm_list *lml, const char *name, 10637c478bd9Sstevel@tonic-gate uint_t flags) 10647c478bd9Sstevel@tonic-gate { 10657c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 1066cce0e03bSab196087 Aliste idx; 10677c478bd9Sstevel@tonic-gate 10687c478bd9Sstevel@tonic-gate /* 10697c478bd9Sstevel@tonic-gate * If this is an auditor, it will have been opened on a new link-map. 10708af2c5b9Srie * To prevent multiple occurrences of the same auditor on multiple 10717c478bd9Sstevel@tonic-gate * link-maps, search the head of each link-map list and see if this 10727c478bd9Sstevel@tonic-gate * object is already loaded as an auditor. 10737c478bd9Sstevel@tonic-gate */ 10747c478bd9Sstevel@tonic-gate if (flags & FLG_RT_AUDIT) { 10757c478bd9Sstevel@tonic-gate Lm_list *lml; 10767c478bd9Sstevel@tonic-gate Listnode *lnp; 10777c478bd9Sstevel@tonic-gate 10787c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(&dynlm_list, lnp, lml)) { 10797c478bd9Sstevel@tonic-gate Rt_map *nlmp = lml->lm_head; 10807c478bd9Sstevel@tonic-gate 10817c478bd9Sstevel@tonic-gate if (nlmp && ((FLAGS(nlmp) & 10827c478bd9Sstevel@tonic-gate (FLG_RT_AUDIT | FLG_RT_DELETE)) == FLG_RT_AUDIT) && 10837c478bd9Sstevel@tonic-gate (STDEV(nlmp) == status->st_dev) && 10847c478bd9Sstevel@tonic-gate (STINO(nlmp) == status->st_ino)) 10857c478bd9Sstevel@tonic-gate return (nlmp); 10867c478bd9Sstevel@tonic-gate } 10877c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 10887c478bd9Sstevel@tonic-gate } 10897c478bd9Sstevel@tonic-gate 10907c478bd9Sstevel@tonic-gate /* 10917c478bd9Sstevel@tonic-gate * If the file has been found determine from the new files status 10927c478bd9Sstevel@tonic-gate * information if this file is actually linked to one we already have 10937c478bd9Sstevel@tonic-gate * mapped. This catches symlink names not caught by is_so_loaded(). 10947c478bd9Sstevel@tonic-gate */ 1095cce0e03bSab196087 for (ALIST_TRAVERSE(lml->lm_lists, idx, lmc)) { 10967c478bd9Sstevel@tonic-gate Rt_map *nlmp; 10977c478bd9Sstevel@tonic-gate 10987c478bd9Sstevel@tonic-gate for (nlmp = lmc->lc_head; nlmp; nlmp = (Rt_map *)NEXT(nlmp)) { 10997c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_DELETE) || 11007c478bd9Sstevel@tonic-gate (FLAGS1(nlmp) & FL1_RT_LDDSTUB)) 11017c478bd9Sstevel@tonic-gate continue; 11027c478bd9Sstevel@tonic-gate 11037c478bd9Sstevel@tonic-gate if ((STDEV(nlmp) != status->st_dev) || 11047c478bd9Sstevel@tonic-gate (STINO(nlmp) != status->st_ino)) 11057c478bd9Sstevel@tonic-gate continue; 11067c478bd9Sstevel@tonic-gate 11077c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_VERBOSE) { 11087247f888Srie /* BEGIN CSTYLED */ 11097c478bd9Sstevel@tonic-gate if (*name == '/') 11107c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 11117c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 11127c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 11137c478bd9Sstevel@tonic-gate else 11147c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 11157c478bd9Sstevel@tonic-gate name, NAME(nlmp), 11167c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 11177c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 11187247f888Srie /* END CSTYLED */ 11197c478bd9Sstevel@tonic-gate } 11207c478bd9Sstevel@tonic-gate return (nlmp); 11217c478bd9Sstevel@tonic-gate } 11227c478bd9Sstevel@tonic-gate } 11237c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 11247c478bd9Sstevel@tonic-gate } 11257c478bd9Sstevel@tonic-gate 11267c478bd9Sstevel@tonic-gate /* 11277c478bd9Sstevel@tonic-gate * Generate any error messages indicating a file could not be found. When 11287c478bd9Sstevel@tonic-gate * preloading or auditing a secure application, it can be a little more helpful 11297c478bd9Sstevel@tonic-gate * to indicate that a search of secure directories has failed, so adjust the 11307c478bd9Sstevel@tonic-gate * messages accordingly. 11317c478bd9Sstevel@tonic-gate */ 11327c478bd9Sstevel@tonic-gate void 11337c478bd9Sstevel@tonic-gate file_notfound(Lm_list *lml, const char *name, Rt_map *clmp, uint_t flags, 11347c478bd9Sstevel@tonic-gate Rej_desc * rej) 11357c478bd9Sstevel@tonic-gate { 11367c478bd9Sstevel@tonic-gate int secure = 0; 11377c478bd9Sstevel@tonic-gate 11387c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SECURE) && 11397c478bd9Sstevel@tonic-gate (flags & (FLG_RT_PRELOAD | FLG_RT_AUDIT))) 11407c478bd9Sstevel@tonic-gate secure++; 11417c478bd9Sstevel@tonic-gate 11427c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 11437c478bd9Sstevel@tonic-gate /* 11447c478bd9Sstevel@tonic-gate * Under ldd(1), auxiliary filtees that can't be loaded are 11457c478bd9Sstevel@tonic-gate * ignored, unless verbose errors are requested. 11467c478bd9Sstevel@tonic-gate */ 11477c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SILENCERR) && 11487c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_TRC_VERBOSE) == 0)) 11497c478bd9Sstevel@tonic-gate return; 11507c478bd9Sstevel@tonic-gate 11517c478bd9Sstevel@tonic-gate if (secure) 11527c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 11537c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_SEC_NFOUND)); 11547c478bd9Sstevel@tonic-gate else 11557c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 11567c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_NFOUND)); 11577c478bd9Sstevel@tonic-gate return; 11587c478bd9Sstevel@tonic-gate } 11597c478bd9Sstevel@tonic-gate 11607c478bd9Sstevel@tonic-gate if (rej->rej_type) { 1161de777a60Sab196087 Conv_reject_desc_buf_t rej_buf; 1162de777a60Sab196087 11635aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(err_reject[rej->rej_type]), 11647c478bd9Sstevel@tonic-gate rej->rej_name ? rej->rej_name : MSG_INTL(MSG_STR_UNKNOWN), 1165de777a60Sab196087 conv_reject_desc(rej, &rej_buf)); 11667c478bd9Sstevel@tonic-gate return; 11677c478bd9Sstevel@tonic-gate } 11687c478bd9Sstevel@tonic-gate 11697c478bd9Sstevel@tonic-gate if (secure) 11705aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SEC_OPEN), name); 11717c478bd9Sstevel@tonic-gate else 11725aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), name, 11737c478bd9Sstevel@tonic-gate strerror(ENOENT)); 11747c478bd9Sstevel@tonic-gate } 11757c478bd9Sstevel@tonic-gate 11767c478bd9Sstevel@tonic-gate static int 11777c478bd9Sstevel@tonic-gate file_open(int err, Lm_list *lml, const char *oname, const char *nname, 11787c478bd9Sstevel@tonic-gate Rt_map *clmp, uint_t flags, Fdesc *fdesc, Rej_desc *rej) 11797c478bd9Sstevel@tonic-gate { 11807c478bd9Sstevel@tonic-gate struct stat status; 11817c478bd9Sstevel@tonic-gate Rt_map *nlmp; 11828521e5e6Srie int resolved = 0; 11837c478bd9Sstevel@tonic-gate 11847c478bd9Sstevel@tonic-gate fdesc->fd_oname = oname; 11857c478bd9Sstevel@tonic-gate 11867c478bd9Sstevel@tonic-gate if ((err == 0) && (fdesc->fd_flags & FLG_FD_ALTER)) 11875aefb655Srie DBG_CALL(Dbg_file_config_obj(lml, oname, 0, nname)); 11887c478bd9Sstevel@tonic-gate 11897c478bd9Sstevel@tonic-gate /* 11907c478bd9Sstevel@tonic-gate * If we're dealing with a full pathname, determine whether this 11917c478bd9Sstevel@tonic-gate * pathname is already known. Other pathnames fall through to the 11927c478bd9Sstevel@tonic-gate * dev/inode check, as even though the pathname may look the same as 11937c478bd9Sstevel@tonic-gate * one previously used, the process may have changed directory. 11947c478bd9Sstevel@tonic-gate */ 11957c478bd9Sstevel@tonic-gate if ((err == 0) && (nname[0] == '/')) { 11967c478bd9Sstevel@tonic-gate if ((nlmp = fpavl_loaded(lml, nname, 11977c478bd9Sstevel@tonic-gate &(fdesc->fd_avlwhere))) != NULL) { 11987c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 11997c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 12007c478bd9Sstevel@tonic-gate return (1); 12017c478bd9Sstevel@tonic-gate } 12027c478bd9Sstevel@tonic-gate } 12037c478bd9Sstevel@tonic-gate 12047c478bd9Sstevel@tonic-gate if ((err == 0) && ((stat(nname, &status)) != -1)) { 12057c478bd9Sstevel@tonic-gate char path[PATH_MAX]; 12067c478bd9Sstevel@tonic-gate int fd, size, added; 12077c478bd9Sstevel@tonic-gate 12087c478bd9Sstevel@tonic-gate /* 12097c478bd9Sstevel@tonic-gate * If this path has been constructed as part of expanding a 12108521e5e6Srie * HWCAP directory, ignore any subdirectories. As this is a 12118521e5e6Srie * silent failure, where no rejection message is created, free 12128521e5e6Srie * the original name to simplify the life of the caller. For 12138521e5e6Srie * any other reference that expands to a directory, fall through 12148af2c5b9Srie * to construct a meaningful rejection message. 12157c478bd9Sstevel@tonic-gate */ 12167c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) && 12178521e5e6Srie ((status.st_mode & S_IFMT) == S_IFDIR)) { 12188521e5e6Srie free((void *)nname); 12197c478bd9Sstevel@tonic-gate return (0); 12208521e5e6Srie } 12217c478bd9Sstevel@tonic-gate 12227c478bd9Sstevel@tonic-gate /* 12237c478bd9Sstevel@tonic-gate * Resolve the filename and determine whether the resolved name 12247c478bd9Sstevel@tonic-gate * is already known. Typically, the previous fpavl_loaded() 12257c478bd9Sstevel@tonic-gate * will have caught this, as both NAME() and PATHNAME() for a 12267c478bd9Sstevel@tonic-gate * link-map are recorded in the FullNode AVL tree. However, 12277c478bd9Sstevel@tonic-gate * instances exist where a file can be replaced (loop-back 12287c478bd9Sstevel@tonic-gate * mounts, bfu, etc.), and reference is made to the original 12297c478bd9Sstevel@tonic-gate * file through a symbolic link. By checking the pathname here, 12307c478bd9Sstevel@tonic-gate * we don't fall through to the dev/inode check and conclude 12317c478bd9Sstevel@tonic-gate * that a new file should be loaded. 12327c478bd9Sstevel@tonic-gate */ 12337c478bd9Sstevel@tonic-gate if ((nname[0] == '/') && (rtld_flags & RT_FL_EXECNAME) && 12347c478bd9Sstevel@tonic-gate ((size = resolvepath(nname, path, (PATH_MAX - 1))) > 0)) { 12357c478bd9Sstevel@tonic-gate path[size] = '\0'; 12367c478bd9Sstevel@tonic-gate 12377c478bd9Sstevel@tonic-gate if (strcmp(nname, path)) { 123824a6229eSrie if ((nlmp = 123924a6229eSrie fpavl_loaded(lml, path, 0)) != NULL) { 12407c478bd9Sstevel@tonic-gate added = 0; 12417c478bd9Sstevel@tonic-gate 12427c478bd9Sstevel@tonic-gate if (append_alias(nlmp, nname, 12437c478bd9Sstevel@tonic-gate &added) == 0) 12447c478bd9Sstevel@tonic-gate return (0); 12457247f888Srie /* BEGIN CSTYLED */ 12467c478bd9Sstevel@tonic-gate if (added) 124710a4fa49Srie DBG_CALL(Dbg_file_skip(LIST(clmp), 12485aefb655Srie NAME(nlmp), nname)); 12497247f888Srie /* END CSTYLED */ 12507c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 12517c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 12527c478bd9Sstevel@tonic-gate return (1); 12537c478bd9Sstevel@tonic-gate } 12547c478bd9Sstevel@tonic-gate 12557c478bd9Sstevel@tonic-gate /* 12567c478bd9Sstevel@tonic-gate * If this pathname hasn't been loaded, save 12577c478bd9Sstevel@tonic-gate * the resolved pathname so that it doesn't 12587c478bd9Sstevel@tonic-gate * have to be recomputed as part of fullpath() 12597c478bd9Sstevel@tonic-gate * processing. 12607c478bd9Sstevel@tonic-gate */ 12618521e5e6Srie if ((fdesc->fd_pname = strdup(path)) == NULL) 12627c478bd9Sstevel@tonic-gate return (0); 12638521e5e6Srie resolved = 1; 12647c478bd9Sstevel@tonic-gate } else { 12657c478bd9Sstevel@tonic-gate /* 12667c478bd9Sstevel@tonic-gate * If the resolved name doesn't differ from the 12677c478bd9Sstevel@tonic-gate * original, save it without duplication. 12687c478bd9Sstevel@tonic-gate * Having fd_pname set indicates that no further 12697c478bd9Sstevel@tonic-gate * resolvepath processing is necessary. 12707c478bd9Sstevel@tonic-gate */ 12717c478bd9Sstevel@tonic-gate fdesc->fd_pname = nname; 12727c478bd9Sstevel@tonic-gate } 12737c478bd9Sstevel@tonic-gate } 12747c478bd9Sstevel@tonic-gate 12757c478bd9Sstevel@tonic-gate if (nlmp = is_devinode_loaded(&status, lml, nname, flags)) { 1276c75e1b9dSrie if (flags & FLG_RT_AUDIT) { 1277c75e1b9dSrie /* 1278c75e1b9dSrie * If we've been requested to load an auditor, 1279c75e1b9dSrie * and an auditor of the same name already 1280c75e1b9dSrie * exists, then the original auditor is used. 1281c75e1b9dSrie */ 1282c75e1b9dSrie DBG_CALL(Dbg_audit_skip(LIST(clmp), 1283c75e1b9dSrie NAME(nlmp), LIST(nlmp)->lm_lmidstr)); 1284c75e1b9dSrie } else { 1285c75e1b9dSrie /* 1286c75e1b9dSrie * Otherwise, if an alternatively named file 1287c75e1b9dSrie * has been found for the same dev/inode, add 1288c75e1b9dSrie * a new name alias, and insert any alias full 1289c75e1b9dSrie * pathname in the link-map lists AVL tree. 1290c75e1b9dSrie */ 12917c478bd9Sstevel@tonic-gate added = 0; 12927c478bd9Sstevel@tonic-gate 12937c478bd9Sstevel@tonic-gate if (append_alias(nlmp, nname, &added) == 0) 12947c478bd9Sstevel@tonic-gate return (0); 12957c478bd9Sstevel@tonic-gate if (added) { 1296c75e1b9dSrie if ((nname[0] == '/') && 1297c75e1b9dSrie (fpavl_insert(lml, nlmp, 1298c75e1b9dSrie nname, 0) == 0)) 12997c478bd9Sstevel@tonic-gate return (0); 1300c75e1b9dSrie DBG_CALL(Dbg_file_skip(LIST(clmp), 1301c75e1b9dSrie NAME(nlmp), nname)); 13027c478bd9Sstevel@tonic-gate } 1303c75e1b9dSrie } 1304c75e1b9dSrie 1305c75e1b9dSrie /* 1306c75e1b9dSrie * Record in the file descriptor the existing object 1307c75e1b9dSrie * that satisfies this open request. 1308c75e1b9dSrie */ 13097c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 13107c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 13117c478bd9Sstevel@tonic-gate return (1); 13127c478bd9Sstevel@tonic-gate } 13137c478bd9Sstevel@tonic-gate 13147c478bd9Sstevel@tonic-gate if ((fd = open(nname, O_RDONLY, 0)) == -1) { 13157c478bd9Sstevel@tonic-gate /* 13167c478bd9Sstevel@tonic-gate * As the file must exist for the previous stat() to 13177c478bd9Sstevel@tonic-gate * have succeeded, record the error condition. 13187c478bd9Sstevel@tonic-gate */ 13197c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 13207c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 13217c478bd9Sstevel@tonic-gate } else { 13227c478bd9Sstevel@tonic-gate Fct *ftp; 13237c478bd9Sstevel@tonic-gate 13247c478bd9Sstevel@tonic-gate if ((ftp = are_u_this(rej, fd, &status, nname)) != 0) { 13257c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 13267c478bd9Sstevel@tonic-gate fdesc->fd_ftp = ftp; 13277c478bd9Sstevel@tonic-gate fdesc->fd_dev = status.st_dev; 13287c478bd9Sstevel@tonic-gate fdesc->fd_ino = status.st_ino; 13297c478bd9Sstevel@tonic-gate fdesc->fd_fd = fd; 13307c478bd9Sstevel@tonic-gate 13317c478bd9Sstevel@tonic-gate /* 13327c478bd9Sstevel@tonic-gate * Trace that this open has succeeded. 13337c478bd9Sstevel@tonic-gate */ 13347c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 13357c478bd9Sstevel@tonic-gate trace_so(clmp, 0, oname, nname, 13367247f888Srie (fdesc->fd_flags & FLG_FD_ALTER), 13377247f888Srie 0); 13387c478bd9Sstevel@tonic-gate } 13397c478bd9Sstevel@tonic-gate return (1); 13407c478bd9Sstevel@tonic-gate } 13417c478bd9Sstevel@tonic-gate (void) close(fd); 13427c478bd9Sstevel@tonic-gate } 13437c478bd9Sstevel@tonic-gate 13447c478bd9Sstevel@tonic-gate } else if (errno != ENOENT) { 13457c478bd9Sstevel@tonic-gate /* 13467c478bd9Sstevel@tonic-gate * If the open() failed for anything other than the file not 13477c478bd9Sstevel@tonic-gate * existing, record the error condition. 13487c478bd9Sstevel@tonic-gate */ 13497c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 13507c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 13517c478bd9Sstevel@tonic-gate } 13527c478bd9Sstevel@tonic-gate 13537c478bd9Sstevel@tonic-gate /* 13547c478bd9Sstevel@tonic-gate * Indicate any rejection. 13557c478bd9Sstevel@tonic-gate */ 13567c478bd9Sstevel@tonic-gate if (rej->rej_type) { 13578521e5e6Srie /* 13588521e5e6Srie * If this pathname was resolved and duplicated, remove the 13598521e5e6Srie * allocated name to simplify the cleanup of the callers. 13608521e5e6Srie */ 13618521e5e6Srie if (resolved) { 13628521e5e6Srie free((void *)fdesc->fd_pname); 13638521e5e6Srie fdesc->fd_pname = NULL; 13648521e5e6Srie } 13657c478bd9Sstevel@tonic-gate rej->rej_name = nname; 13667c478bd9Sstevel@tonic-gate rej->rej_flag = (fdesc->fd_flags & FLG_FD_ALTER); 13675aefb655Srie DBG_CALL(Dbg_file_rejected(lml, rej)); 13687c478bd9Sstevel@tonic-gate } 13697c478bd9Sstevel@tonic-gate return (0); 13707c478bd9Sstevel@tonic-gate } 13717c478bd9Sstevel@tonic-gate 13727c478bd9Sstevel@tonic-gate /* 13737c478bd9Sstevel@tonic-gate * Find a full pathname (it contains a "/"). 13747c478bd9Sstevel@tonic-gate */ 13757c478bd9Sstevel@tonic-gate int 13767c478bd9Sstevel@tonic-gate find_path(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 13777c478bd9Sstevel@tonic-gate Fdesc *fdesc, Rej_desc *rej) 13787c478bd9Sstevel@tonic-gate { 13797c478bd9Sstevel@tonic-gate int err = 0; 13807c478bd9Sstevel@tonic-gate 13817c478bd9Sstevel@tonic-gate /* 13827c478bd9Sstevel@tonic-gate * If directory configuration exists determine if this path is known. 13837c478bd9Sstevel@tonic-gate */ 13847c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DIRCFG) { 13857c478bd9Sstevel@tonic-gate Rtc_obj *obj; 13867c478bd9Sstevel@tonic-gate const char *aname; 13877c478bd9Sstevel@tonic-gate 13887c478bd9Sstevel@tonic-gate if ((obj = elf_config_ent(oname, (Word)elf_hash(oname), 13897c478bd9Sstevel@tonic-gate 0, &aname)) != 0) { 13907c478bd9Sstevel@tonic-gate /* 13917c478bd9Sstevel@tonic-gate * If the configuration file states that this path is a 13927c478bd9Sstevel@tonic-gate * directory, or the path is explicitly defined as 13937c478bd9Sstevel@tonic-gate * non-existent (ie. a unused platform specific 13947c478bd9Sstevel@tonic-gate * library), then go no further. 13957c478bd9Sstevel@tonic-gate */ 13967c478bd9Sstevel@tonic-gate if (obj->co_flags & RTC_OBJ_DIRENT) { 13977c478bd9Sstevel@tonic-gate err = EISDIR; 13987c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & 13997c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == 14007c478bd9Sstevel@tonic-gate RTC_OBJ_NOEXIST) { 14017c478bd9Sstevel@tonic-gate err = ENOENT; 14027c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & RTC_OBJ_ALTER) && 14037c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && (lml == &lml_main)) { 14047c478bd9Sstevel@tonic-gate int ret; 14057c478bd9Sstevel@tonic-gate 14067c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 14077c478bd9Sstevel@tonic-gate /* 14087c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. If 14097c478bd9Sstevel@tonic-gate * this fails, and the alternative is flagged 14107c478bd9Sstevel@tonic-gate * as optional, fall through to open the 14117c478bd9Sstevel@tonic-gate * original path. 14127c478bd9Sstevel@tonic-gate */ 14135aefb655Srie DBG_CALL(Dbg_libs_found(lml, aname, 14145aefb655Srie FLG_FD_ALTER)); 14157c478bd9Sstevel@tonic-gate if (((ret = file_open(0, lml, oname, aname, 14167c478bd9Sstevel@tonic-gate clmp, flags, fdesc, rej)) != 0) || 14177c478bd9Sstevel@tonic-gate ((obj->co_flags & RTC_OBJ_OPTINAL) == 0)) 14187c478bd9Sstevel@tonic-gate return (ret); 14197c478bd9Sstevel@tonic-gate 14207c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 14217c478bd9Sstevel@tonic-gate } 14227c478bd9Sstevel@tonic-gate } 14237c478bd9Sstevel@tonic-gate } 14245aefb655Srie DBG_CALL(Dbg_libs_found(lml, oname, 0)); 14257c478bd9Sstevel@tonic-gate return (file_open(err, lml, oname, oname, clmp, flags, fdesc, rej)); 14267c478bd9Sstevel@tonic-gate } 14277c478bd9Sstevel@tonic-gate 14287c478bd9Sstevel@tonic-gate /* 14297c478bd9Sstevel@tonic-gate * Find a simple filename (it doesn't contain a "/"). 14307c478bd9Sstevel@tonic-gate */ 14317c478bd9Sstevel@tonic-gate static int 14327c478bd9Sstevel@tonic-gate _find_file(Lm_list *lml, const char *oname, const char *nname, Rt_map *clmp, 14337c478bd9Sstevel@tonic-gate uint_t flags, Fdesc *fdesc, Rej_desc *rej, Pnode *dir, int aflag) 14347c478bd9Sstevel@tonic-gate { 14355aefb655Srie DBG_CALL(Dbg_libs_found(lml, nname, aflag)); 14367c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_SEARCH) && 14377c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 14387c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_PTH_TRYING), nname, aflag ? 14397c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_ALTER) : MSG_ORIG(MSG_STR_EMPTY)); 14407c478bd9Sstevel@tonic-gate } 14417c478bd9Sstevel@tonic-gate 14427c478bd9Sstevel@tonic-gate /* 14437c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're about 14447c478bd9Sstevel@tonic-gate * to go search for. The audit library may offer an alternative 14457c478bd9Sstevel@tonic-gate * dependency, or indicate that this dependency should be ignored. 14467c478bd9Sstevel@tonic-gate */ 14477c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 14487c478bd9Sstevel@tonic-gate char *aname = audit_objsearch(clmp, nname, dir->p_orig); 14497c478bd9Sstevel@tonic-gate 14507247f888Srie if (aname == 0) { 14517247f888Srie DBG_CALL(Dbg_audit_terminate(lml, nname)); 14527c478bd9Sstevel@tonic-gate return (0); 14537247f888Srie } 14547247f888Srie 14557247f888Srie /* 14567247f888Srie * Protect ourselves from auditor mischief, by copying any 14577247f888Srie * alternative name over the present name (the present name is 14587247f888Srie * maintained in a static buffer - see elf_get_so()); 14597247f888Srie */ 14607247f888Srie if (nname != aname) 14617247f888Srie (void) strncpy((char *)nname, aname, PATH_MAX); 14627c478bd9Sstevel@tonic-gate } 14637c478bd9Sstevel@tonic-gate return (file_open(0, lml, oname, nname, clmp, flags, fdesc, rej)); 14647c478bd9Sstevel@tonic-gate } 14657c478bd9Sstevel@tonic-gate 1466390b98b5Srie static int 14677c478bd9Sstevel@tonic-gate find_file(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 14687c478bd9Sstevel@tonic-gate Fdesc *fdesc, Rej_desc *rej, Pnode *dir, Word * strhash, size_t olen) 14697c478bd9Sstevel@tonic-gate { 14707c478bd9Sstevel@tonic-gate static Rtc_obj Obj = { 0 }; 14717c478bd9Sstevel@tonic-gate Rtc_obj *dobj; 14727c478bd9Sstevel@tonic-gate const char *nname = oname; 14737c478bd9Sstevel@tonic-gate 14747c478bd9Sstevel@tonic-gate if (dir->p_name == 0) 14757c478bd9Sstevel@tonic-gate return (0); 14767c478bd9Sstevel@tonic-gate if (dir->p_info) { 14777c478bd9Sstevel@tonic-gate dobj = (Rtc_obj *)dir->p_info; 14787c478bd9Sstevel@tonic-gate if ((dobj->co_flags & 14797c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 14807c478bd9Sstevel@tonic-gate return (0); 14817c478bd9Sstevel@tonic-gate } else 14827c478bd9Sstevel@tonic-gate dobj = 0; 14837c478bd9Sstevel@tonic-gate 14847c478bd9Sstevel@tonic-gate /* 14857c478bd9Sstevel@tonic-gate * If configuration information exists see if this directory/file 14867c478bd9Sstevel@tonic-gate * combination exists. 14877c478bd9Sstevel@tonic-gate */ 14887c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_DIRCFG) && 14897c478bd9Sstevel@tonic-gate ((dobj == 0) || (dobj->co_id != 0))) { 14907c478bd9Sstevel@tonic-gate Rtc_obj *fobj; 14917c478bd9Sstevel@tonic-gate const char *alt = 0; 14927c478bd9Sstevel@tonic-gate 14937c478bd9Sstevel@tonic-gate /* 14947c478bd9Sstevel@tonic-gate * If this pnode has not yet been searched for in the 14957c478bd9Sstevel@tonic-gate * configuration file go find it. 14967c478bd9Sstevel@tonic-gate */ 14977c478bd9Sstevel@tonic-gate if (dobj == 0) { 14987c478bd9Sstevel@tonic-gate dobj = elf_config_ent(dir->p_name, 14997c478bd9Sstevel@tonic-gate (Word)elf_hash(dir->p_name), 0, 0); 15007c478bd9Sstevel@tonic-gate if (dobj == 0) 15017c478bd9Sstevel@tonic-gate dobj = &Obj; 15027c478bd9Sstevel@tonic-gate dir->p_info = (void *)dobj; 15037c478bd9Sstevel@tonic-gate 15047c478bd9Sstevel@tonic-gate if ((dobj->co_flags & (RTC_OBJ_NOEXIST | 15057c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 15067c478bd9Sstevel@tonic-gate return (0); 15077c478bd9Sstevel@tonic-gate } 15087c478bd9Sstevel@tonic-gate 15097c478bd9Sstevel@tonic-gate /* 15107c478bd9Sstevel@tonic-gate * If we found a directory search for the file. 15117c478bd9Sstevel@tonic-gate */ 15127c478bd9Sstevel@tonic-gate if (dobj->co_id != 0) { 15137c478bd9Sstevel@tonic-gate if (*strhash == 0) 15147c478bd9Sstevel@tonic-gate *strhash = (Word)elf_hash(nname); 15157c478bd9Sstevel@tonic-gate fobj = elf_config_ent(nname, *strhash, 15167c478bd9Sstevel@tonic-gate dobj->co_id, &alt); 15177c478bd9Sstevel@tonic-gate 15187c478bd9Sstevel@tonic-gate /* 15197c478bd9Sstevel@tonic-gate * If this object specifically does not exist, or the 15207c478bd9Sstevel@tonic-gate * object can't be found in a know-all-entries 15217c478bd9Sstevel@tonic-gate * directory, continue looking. If the object does 15227c478bd9Sstevel@tonic-gate * exist determine if an alternative object exists. 15237c478bd9Sstevel@tonic-gate */ 15247c478bd9Sstevel@tonic-gate if (fobj == 0) { 15257c478bd9Sstevel@tonic-gate if (dobj->co_flags & RTC_OBJ_ALLENTS) 15267c478bd9Sstevel@tonic-gate return (0); 15277c478bd9Sstevel@tonic-gate } else { 15287c478bd9Sstevel@tonic-gate if ((fobj->co_flags & (RTC_OBJ_NOEXIST | 15297c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 15307c478bd9Sstevel@tonic-gate return (0); 15317c478bd9Sstevel@tonic-gate 15327c478bd9Sstevel@tonic-gate if ((fobj->co_flags & RTC_OBJ_ALTER) && 15337c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && 15347c478bd9Sstevel@tonic-gate (lml == &lml_main)) { 15357c478bd9Sstevel@tonic-gate int ret; 15367c478bd9Sstevel@tonic-gate 15377c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 15387c478bd9Sstevel@tonic-gate /* 15397c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. 15407c478bd9Sstevel@tonic-gate * If this fails, and the alternative is 15417c478bd9Sstevel@tonic-gate * flagged as optional, fall through to 15427c478bd9Sstevel@tonic-gate * open the original path. 15437c478bd9Sstevel@tonic-gate */ 15447c478bd9Sstevel@tonic-gate ret = _find_file(lml, oname, alt, clmp, 15457c478bd9Sstevel@tonic-gate flags, fdesc, rej, dir, 1); 15467c478bd9Sstevel@tonic-gate if (ret || ((fobj->co_flags & 15477c478bd9Sstevel@tonic-gate RTC_OBJ_OPTINAL) == 0)) 15487c478bd9Sstevel@tonic-gate return (ret); 15497c478bd9Sstevel@tonic-gate 15507c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 15517c478bd9Sstevel@tonic-gate } 15527c478bd9Sstevel@tonic-gate } 15537c478bd9Sstevel@tonic-gate } 15547c478bd9Sstevel@tonic-gate } 15557c478bd9Sstevel@tonic-gate 15567c478bd9Sstevel@tonic-gate /* 15577c478bd9Sstevel@tonic-gate * Protect ourselves from building an invalid pathname. 15587c478bd9Sstevel@tonic-gate */ 15597c478bd9Sstevel@tonic-gate if ((olen + dir->p_len + 1) >= PATH_MAX) { 15605aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), nname, 15617c478bd9Sstevel@tonic-gate strerror(ENAMETOOLONG)); 15627c478bd9Sstevel@tonic-gate return (0); 15637c478bd9Sstevel@tonic-gate } 15647c478bd9Sstevel@tonic-gate if ((nname = (LM_GET_SO(clmp)(dir->p_name, nname))) == 0) 15657c478bd9Sstevel@tonic-gate return (0); 15667c478bd9Sstevel@tonic-gate 15677c478bd9Sstevel@tonic-gate return (_find_file(lml, oname, nname, clmp, flags, fdesc, rej, dir, 0)); 15687c478bd9Sstevel@tonic-gate } 15697c478bd9Sstevel@tonic-gate 15707c478bd9Sstevel@tonic-gate /* 15717c478bd9Sstevel@tonic-gate * A unique file has been opened. Create a link-map to represent it, and 15727c478bd9Sstevel@tonic-gate * process the various names by which it can be referenced. 15737c478bd9Sstevel@tonic-gate */ 15747c478bd9Sstevel@tonic-gate static Rt_map * 1575390b98b5Srie load_file(Lm_list *lml, Aliste lmco, Fdesc *fdesc) 15767c478bd9Sstevel@tonic-gate { 15777c478bd9Sstevel@tonic-gate const char *oname = fdesc->fd_oname; 15787c478bd9Sstevel@tonic-gate const char *nname = fdesc->fd_nname; 15797c478bd9Sstevel@tonic-gate Rt_map *nlmp; 15807c478bd9Sstevel@tonic-gate 15817c478bd9Sstevel@tonic-gate /* 15827c478bd9Sstevel@tonic-gate * Typically we call fct_map_so() with the full pathname of the opened 15837c478bd9Sstevel@tonic-gate * file (nname) and the name that started the search (oname), thus for 15847c478bd9Sstevel@tonic-gate * a typical dependency on libc this would be /usr/lib/libc.so.1 and 15857c478bd9Sstevel@tonic-gate * libc.so.1 (DT_NEEDED). The original name is maintained on an ALIAS 15867c478bd9Sstevel@tonic-gate * list for comparison when bringing in new dependencies. If the user 15877c478bd9Sstevel@tonic-gate * specified name as a full path (from a dlopen() for example) then 15887c478bd9Sstevel@tonic-gate * there's no need to create an ALIAS. 15897c478bd9Sstevel@tonic-gate */ 15907c478bd9Sstevel@tonic-gate if (strcmp(oname, nname) == 0) 15917c478bd9Sstevel@tonic-gate oname = 0; 15927c478bd9Sstevel@tonic-gate 15937c478bd9Sstevel@tonic-gate /* 15947c478bd9Sstevel@tonic-gate * A new file has been opened, now map it into the process. Close the 15957c478bd9Sstevel@tonic-gate * original file so as not to accumulate file descriptors. 15967c478bd9Sstevel@tonic-gate */ 15977c478bd9Sstevel@tonic-gate nlmp = ((fdesc->fd_ftp)->fct_map_so)(lml, lmco, nname, oname, 15987c478bd9Sstevel@tonic-gate fdesc->fd_fd); 15997c478bd9Sstevel@tonic-gate (void) close(fdesc->fd_fd); 16007c478bd9Sstevel@tonic-gate fdesc->fd_fd = 0; 16017c478bd9Sstevel@tonic-gate 16027c478bd9Sstevel@tonic-gate if (nlmp == 0) 16037c478bd9Sstevel@tonic-gate return (0); 16047c478bd9Sstevel@tonic-gate 16057c478bd9Sstevel@tonic-gate /* 16067c478bd9Sstevel@tonic-gate * Save the dev/inode information for later comparisons. 16077c478bd9Sstevel@tonic-gate */ 16087c478bd9Sstevel@tonic-gate STDEV(nlmp) = fdesc->fd_dev; 16097c478bd9Sstevel@tonic-gate STINO(nlmp) = fdesc->fd_ino; 16107c478bd9Sstevel@tonic-gate 16117c478bd9Sstevel@tonic-gate /* 16127c478bd9Sstevel@tonic-gate * Insert the names of this link-map into the FullpathNode AVL tree. 16137c478bd9Sstevel@tonic-gate * Save both the NAME() and PATHNAME() is they differ. 16147c478bd9Sstevel@tonic-gate * 16157c478bd9Sstevel@tonic-gate * If this is an OBJECT file, don't insert it yet as this is only a 16167c478bd9Sstevel@tonic-gate * temporary link-map. During elf_obj_fini() the final link-map is 16177c478bd9Sstevel@tonic-gate * created, and its names will be inserted in the FullpathNode AVL 16187c478bd9Sstevel@tonic-gate * tree at that time. 16197c478bd9Sstevel@tonic-gate */ 16207c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_OBJECT) == 0) { 16217c478bd9Sstevel@tonic-gate /* 16227c478bd9Sstevel@tonic-gate * Update the objects full path information if necessary. 162311a2bb38Srie * Note, with pathname expansion in effect, the fd_pname will 162411a2bb38Srie * be used as PATHNAME(). This allocated string will be freed 162511a2bb38Srie * should this object be deleted. However, without pathname 162611a2bb38Srie * expansion, the fd_name should be freed now, as it is no 162711a2bb38Srie * longer referenced. 16287c478bd9Sstevel@tonic-gate */ 162911a2bb38Srie if (FLAGS1(nlmp) & FL1_RT_RELATIVE) 16307c478bd9Sstevel@tonic-gate (void) fullpath(nlmp, fdesc->fd_pname); 163111a2bb38Srie else if (fdesc->fd_pname != fdesc->fd_nname) 163211a2bb38Srie free((void *)fdesc->fd_pname); 16337c478bd9Sstevel@tonic-gate fdesc->fd_pname = 0; 16347c478bd9Sstevel@tonic-gate 16357c478bd9Sstevel@tonic-gate if ((NAME(nlmp)[0] == '/') && (fpavl_insert(lml, nlmp, 16367c478bd9Sstevel@tonic-gate NAME(nlmp), fdesc->fd_avlwhere) == 0)) { 16377c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 16387c478bd9Sstevel@tonic-gate return (0); 16397c478bd9Sstevel@tonic-gate } 16407c478bd9Sstevel@tonic-gate if (((NAME(nlmp)[0] != '/') || 16417c478bd9Sstevel@tonic-gate (NAME(nlmp) != PATHNAME(nlmp))) && 16427c478bd9Sstevel@tonic-gate (fpavl_insert(lml, nlmp, PATHNAME(nlmp), 0) == 0)) { 16437c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 16447c478bd9Sstevel@tonic-gate return (0); 16457c478bd9Sstevel@tonic-gate } 16467c478bd9Sstevel@tonic-gate } 16477c478bd9Sstevel@tonic-gate 16487c478bd9Sstevel@tonic-gate /* 16497c478bd9Sstevel@tonic-gate * If we're processing an alternative object reset the original name 16507c478bd9Sstevel@tonic-gate * for possible $ORIGIN processing. 16517c478bd9Sstevel@tonic-gate */ 16527c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_ALTER) { 16537c478bd9Sstevel@tonic-gate const char *odir; 16547c478bd9Sstevel@tonic-gate char *ndir; 16557c478bd9Sstevel@tonic-gate size_t olen; 16567c478bd9Sstevel@tonic-gate 16577c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= FLG_RT_ALTER; 16587c478bd9Sstevel@tonic-gate 16597c478bd9Sstevel@tonic-gate /* 16607c478bd9Sstevel@tonic-gate * If we were given a pathname containing a slash then the 16617c478bd9Sstevel@tonic-gate * original name is still in oname. Otherwise the original 16627c478bd9Sstevel@tonic-gate * directory is in dir->p_name (which is all we need for 16637c478bd9Sstevel@tonic-gate * $ORIGIN). 16647c478bd9Sstevel@tonic-gate */ 16657c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_SLASH) { 16667c478bd9Sstevel@tonic-gate char *ofil; 16677c478bd9Sstevel@tonic-gate 16687c478bd9Sstevel@tonic-gate odir = oname; 16697c478bd9Sstevel@tonic-gate ofil = strrchr(oname, '/'); 16707c478bd9Sstevel@tonic-gate olen = ofil - odir + 1; 16717c478bd9Sstevel@tonic-gate } else { 16727c478bd9Sstevel@tonic-gate odir = fdesc->fd_odir; 16737c478bd9Sstevel@tonic-gate olen = strlen(odir) + 1; 16747c478bd9Sstevel@tonic-gate } 16757c478bd9Sstevel@tonic-gate 16767c478bd9Sstevel@tonic-gate if ((ndir = (char *)malloc(olen)) == 0) { 16777c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 16787c478bd9Sstevel@tonic-gate return (0); 16797c478bd9Sstevel@tonic-gate } 16807c478bd9Sstevel@tonic-gate (void) strncpy(ndir, odir, olen); 16817c478bd9Sstevel@tonic-gate ndir[--olen] = '\0'; 16827c478bd9Sstevel@tonic-gate 16837c478bd9Sstevel@tonic-gate ORIGNAME(nlmp) = ndir; 16847c478bd9Sstevel@tonic-gate DIRSZ(nlmp) = olen; 16857c478bd9Sstevel@tonic-gate } 16867c478bd9Sstevel@tonic-gate 16877c478bd9Sstevel@tonic-gate /* 1688390b98b5Srie * Identify this as a new object. 16897c478bd9Sstevel@tonic-gate */ 1690390b98b5Srie FLAGS(nlmp) |= FLG_RT_NEWLOAD; 16917c478bd9Sstevel@tonic-gate 16927c478bd9Sstevel@tonic-gate return (nlmp); 16937c478bd9Sstevel@tonic-gate } 16947c478bd9Sstevel@tonic-gate 16957c478bd9Sstevel@tonic-gate /* 16967c478bd9Sstevel@tonic-gate * This function loads the named file and returns a pointer to its link map. 16977c478bd9Sstevel@tonic-gate * It is assumed that the caller has already checked that the file is not 16987c478bd9Sstevel@tonic-gate * already loaded before calling this function (refer is_so_loaded()). 16997c478bd9Sstevel@tonic-gate * Find and open the file, map it into memory, add it to the end of the list 17007c478bd9Sstevel@tonic-gate * of link maps and return a pointer to the new link map. Return 0 on error. 17017c478bd9Sstevel@tonic-gate */ 17027c478bd9Sstevel@tonic-gate static Rt_map * 17037c478bd9Sstevel@tonic-gate load_so(Lm_list *lml, Aliste lmco, const char *oname, Rt_map *clmp, 1704fb1354edSrie uint_t flags, Fdesc *nfdp, Rej_desc *rej) 17057c478bd9Sstevel@tonic-gate { 17067c478bd9Sstevel@tonic-gate char *name; 17077c478bd9Sstevel@tonic-gate uint_t slash = 0; 17087c478bd9Sstevel@tonic-gate size_t olen; 1709fb1354edSrie Fdesc fdesc = { 0 }; 17107c478bd9Sstevel@tonic-gate Pnode *dir; 17117c478bd9Sstevel@tonic-gate 17127c478bd9Sstevel@tonic-gate /* 17137c478bd9Sstevel@tonic-gate * If the file is the run time linker then it's already loaded. 17147c478bd9Sstevel@tonic-gate */ 17157c478bd9Sstevel@tonic-gate if (interp && (strcmp(oname, NAME(lml_rtld.lm_head)) == 0)) 17167c478bd9Sstevel@tonic-gate return (lml_rtld.lm_head); 17177c478bd9Sstevel@tonic-gate 17187c478bd9Sstevel@tonic-gate /* 17198af2c5b9Srie * If this isn't a hardware capabilities pathname, which is already a 17207c478bd9Sstevel@tonic-gate * full, duplicated pathname, determine whether the pathname contains 17217c478bd9Sstevel@tonic-gate * a slash, and if not determine the input filename (for max path 17227c478bd9Sstevel@tonic-gate * length verification). 17237c478bd9Sstevel@tonic-gate */ 17247c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) == 0) { 17257c478bd9Sstevel@tonic-gate const char *str; 17267c478bd9Sstevel@tonic-gate 17277c478bd9Sstevel@tonic-gate for (str = oname; *str; str++) { 17287c478bd9Sstevel@tonic-gate if (*str == '/') { 17297c478bd9Sstevel@tonic-gate slash++; 17307c478bd9Sstevel@tonic-gate break; 17317c478bd9Sstevel@tonic-gate } 17327c478bd9Sstevel@tonic-gate } 17337c478bd9Sstevel@tonic-gate if (slash == 0) 17347c478bd9Sstevel@tonic-gate olen = (str - oname) + 1; 17357c478bd9Sstevel@tonic-gate } 17367c478bd9Sstevel@tonic-gate 17377c478bd9Sstevel@tonic-gate /* 17387c478bd9Sstevel@tonic-gate * If we are passed a 'null' link-map this means that this is the first 17397c478bd9Sstevel@tonic-gate * object to be loaded on this link-map list. In that case we set the 17407c478bd9Sstevel@tonic-gate * link-map to ld.so.1's link-map. 17417c478bd9Sstevel@tonic-gate * 17427c478bd9Sstevel@tonic-gate * This link-map is referenced to determine what lookup rules to use 17437c478bd9Sstevel@tonic-gate * when searching for files. By using ld.so.1's we are defaulting to 17447c478bd9Sstevel@tonic-gate * ELF look-up rules. 17457c478bd9Sstevel@tonic-gate * 17467c478bd9Sstevel@tonic-gate * Note: This case happens when loading the first object onto 17477c478bd9Sstevel@tonic-gate * the plt_tracing link-map. 17487c478bd9Sstevel@tonic-gate */ 17497c478bd9Sstevel@tonic-gate if (clmp == 0) 17507c478bd9Sstevel@tonic-gate clmp = lml_rtld.lm_head; 17517c478bd9Sstevel@tonic-gate 17527c478bd9Sstevel@tonic-gate /* 17537c478bd9Sstevel@tonic-gate * If this path resulted from a $HWCAP specification, then the best 17547c478bd9Sstevel@tonic-gate * hardware capability object has already been establish, and is 17557c478bd9Sstevel@tonic-gate * available in the calling file descriptor. Perform some minor book- 17567c478bd9Sstevel@tonic-gate * keeping so that we can fall through into common code. 17577c478bd9Sstevel@tonic-gate */ 17587c478bd9Sstevel@tonic-gate if (flags & FLG_RT_HWCAP) { 17597c478bd9Sstevel@tonic-gate /* 1760fb1354edSrie * If this object is already loaded, we're done. 17617c478bd9Sstevel@tonic-gate */ 1762fb1354edSrie if (nfdp->fd_lmp) 1763fb1354edSrie return (nfdp->fd_lmp); 17647c478bd9Sstevel@tonic-gate 17657c478bd9Sstevel@tonic-gate /* 17667c478bd9Sstevel@tonic-gate * Obtain the avl index for this object. 17677c478bd9Sstevel@tonic-gate */ 1768fb1354edSrie (void) fpavl_loaded(lml, nfdp->fd_nname, &(nfdp->fd_avlwhere)); 1769bbf522bdSrie 1770bbf522bdSrie /* 1771fb1354edSrie * If the name and resolved pathname differ, duplicate the path 17728af2c5b9Srie * name once more to provide for generic cleanup by the caller. 1773bbf522bdSrie */ 1774fb1354edSrie if (nfdp->fd_pname && (nfdp->fd_nname != nfdp->fd_pname)) { 1775bbf522bdSrie char *pname; 1776bbf522bdSrie 17778521e5e6Srie if ((pname = strdup(nfdp->fd_pname)) == NULL) 1778bbf522bdSrie return (0); 1779fb1354edSrie nfdp->fd_pname = pname; 1780bbf522bdSrie } 17817c478bd9Sstevel@tonic-gate } else if (slash) { 17827c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 17837c478bd9Sstevel@tonic-gate 1784fb1354edSrie *nfdp = fdesc; 1785fb1354edSrie nfdp->fd_flags = FLG_FD_SLASH; 17867c478bd9Sstevel@tonic-gate 1787fb1354edSrie if (find_path(lml, oname, clmp, flags, nfdp, &_rej) == 0) { 178831fdd7caSab196087 rejection_inherit(rej, &_rej); 17897c478bd9Sstevel@tonic-gate return (0); 17907c478bd9Sstevel@tonic-gate } 17917c478bd9Sstevel@tonic-gate 17927c478bd9Sstevel@tonic-gate /* 17937c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 17947c478bd9Sstevel@tonic-gate */ 1795fb1354edSrie if (nfdp->fd_lmp) 1796fb1354edSrie return (nfdp->fd_lmp); 17977c478bd9Sstevel@tonic-gate 17987c478bd9Sstevel@tonic-gate } else { 17997c478bd9Sstevel@tonic-gate /* 18007c478bd9Sstevel@tonic-gate * No '/' - for each directory on list, make a pathname using 18017c478bd9Sstevel@tonic-gate * that directory and filename and try to open that file. 18027c478bd9Sstevel@tonic-gate */ 18037c478bd9Sstevel@tonic-gate Pnode *dirlist = (Pnode *)0; 18047c478bd9Sstevel@tonic-gate Word strhash = 0; 1805fb1354edSrie #if !defined(ISSOLOAD_BASENAME_DISABLED) 1806fb1354edSrie Rt_map *nlmp; 1807fb1354edSrie #endif 18085aefb655Srie DBG_CALL(Dbg_libs_find(lml, oname)); 18097c478bd9Sstevel@tonic-gate 18107c478bd9Sstevel@tonic-gate #if !defined(ISSOLOAD_BASENAME_DISABLED) 18110aa3cd4dSrie if ((nlmp = is_so_loaded(lml, oname))) 18127c478bd9Sstevel@tonic-gate return (nlmp); 18137c478bd9Sstevel@tonic-gate #endif 18147c478bd9Sstevel@tonic-gate /* 18157c478bd9Sstevel@tonic-gate * Make sure we clear the file descriptor new name in case the 18167c478bd9Sstevel@tonic-gate * following directory search doesn't provide any directories 18177c478bd9Sstevel@tonic-gate * (odd, but this can be forced with a -znodefaultlib test). 18187c478bd9Sstevel@tonic-gate */ 1819fb1354edSrie *nfdp = fdesc; 18207c478bd9Sstevel@tonic-gate for (dir = get_next_dir(&dirlist, clmp, flags); dir; 18217c478bd9Sstevel@tonic-gate dir = get_next_dir(&dirlist, clmp, flags)) { 18227c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 18237c478bd9Sstevel@tonic-gate 1824fb1354edSrie *nfdp = fdesc; 18257c478bd9Sstevel@tonic-gate 18267c478bd9Sstevel@tonic-gate /* 18277c478bd9Sstevel@tonic-gate * Try and locate this file. Make sure to clean up 18287c478bd9Sstevel@tonic-gate * any rejection information should the file have 18297c478bd9Sstevel@tonic-gate * been found, but not appropriate. 18307c478bd9Sstevel@tonic-gate */ 1831fb1354edSrie if (find_file(lml, oname, clmp, flags, nfdp, &_rej, 18327c478bd9Sstevel@tonic-gate dir, &strhash, olen) == 0) { 183331fdd7caSab196087 rejection_inherit(rej, &_rej); 18347c478bd9Sstevel@tonic-gate continue; 18357c478bd9Sstevel@tonic-gate } 18367c478bd9Sstevel@tonic-gate 18377c478bd9Sstevel@tonic-gate /* 18387c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 18397c478bd9Sstevel@tonic-gate */ 1840fb1354edSrie if (nfdp->fd_lmp) 1841fb1354edSrie return (nfdp->fd_lmp); 18427c478bd9Sstevel@tonic-gate 1843fb1354edSrie nfdp->fd_odir = dir->p_name; 18447c478bd9Sstevel@tonic-gate break; 18457c478bd9Sstevel@tonic-gate } 18467c478bd9Sstevel@tonic-gate 18477c478bd9Sstevel@tonic-gate /* 18487c478bd9Sstevel@tonic-gate * If the file couldn't be loaded, do another comparison of 18497c478bd9Sstevel@tonic-gate * loaded files using just the basename. This catches folks 18507c478bd9Sstevel@tonic-gate * who may have loaded multiple full pathname files (possibly 18517c478bd9Sstevel@tonic-gate * from setxid applications) to satisfy dependency relationships 18527c478bd9Sstevel@tonic-gate * (i.e., a file might have a dependency on foo.so.1 which has 18537c478bd9Sstevel@tonic-gate * already been opened using its full pathname). 18547c478bd9Sstevel@tonic-gate */ 18558521e5e6Srie if (nfdp->fd_nname == NULL) 18560aa3cd4dSrie return (is_so_loaded(lml, oname)); 18577c478bd9Sstevel@tonic-gate } 18587c478bd9Sstevel@tonic-gate 18597c478bd9Sstevel@tonic-gate /* 18607c478bd9Sstevel@tonic-gate * Duplicate the file name so that NAME() is available in core files. 18617c478bd9Sstevel@tonic-gate * Note, that hardware capability names are already duplicated, but 18627c478bd9Sstevel@tonic-gate * they get duplicated once more to insure consistent cleanup in the 18637c478bd9Sstevel@tonic-gate * event of an error condition. 18647c478bd9Sstevel@tonic-gate */ 18658521e5e6Srie if ((name = strdup(nfdp->fd_nname)) == NULL) 18667c478bd9Sstevel@tonic-gate return (0); 1867fb1354edSrie 1868fb1354edSrie if (nfdp->fd_nname == nfdp->fd_pname) 1869fb1354edSrie nfdp->fd_nname = nfdp->fd_pname = name; 18707c478bd9Sstevel@tonic-gate else 1871fb1354edSrie nfdp->fd_nname = name; 18727c478bd9Sstevel@tonic-gate 18737c478bd9Sstevel@tonic-gate /* 18747c478bd9Sstevel@tonic-gate * Finish mapping the file and return the link-map descriptor. Note, 18757c478bd9Sstevel@tonic-gate * if this request originated from a HWCAP request, re-establish the 18767c478bd9Sstevel@tonic-gate * fdesc information. For single paged objects, such as filters, the 18777c478bd9Sstevel@tonic-gate * original mapping may have been sufficient to capture the file, thus 18787c478bd9Sstevel@tonic-gate * this mapping needs to be reset to insure it doesn't mistakenly get 18797c478bd9Sstevel@tonic-gate * unmapped as part of HWCAP cleanup. 18807c478bd9Sstevel@tonic-gate */ 1881fb1354edSrie return (load_file(lml, lmco, nfdp)); 18827c478bd9Sstevel@tonic-gate } 18837c478bd9Sstevel@tonic-gate 18847c478bd9Sstevel@tonic-gate /* 18857c478bd9Sstevel@tonic-gate * Trace an attempt to load an object. 18867c478bd9Sstevel@tonic-gate */ 18877247f888Srie int 18887247f888Srie load_trace(Lm_list *lml, const char **oname, Rt_map *clmp) 18897c478bd9Sstevel@tonic-gate { 18907247f888Srie const char *name = *oname; 18917247f888Srie 18927c478bd9Sstevel@tonic-gate /* 18937c478bd9Sstevel@tonic-gate * First generate any ldd(1) diagnostics. 18947c478bd9Sstevel@tonic-gate */ 18957c478bd9Sstevel@tonic-gate if ((lml->lm_flags & (LML_FLG_TRC_VERBOSE | LML_FLG_TRC_SEARCH)) && 18967c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) 18977c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, NAME(clmp)); 18987c478bd9Sstevel@tonic-gate 18997c478bd9Sstevel@tonic-gate /* 19007c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're 19017c478bd9Sstevel@tonic-gate * about to go search for. 19027c478bd9Sstevel@tonic-gate */ 19037c478bd9Sstevel@tonic-gate if (((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_ACTIVITY) && 19047c478bd9Sstevel@tonic-gate (lml == LIST(clmp))) 19057c478bd9Sstevel@tonic-gate audit_activity(clmp, LA_ACT_ADD); 19067c478bd9Sstevel@tonic-gate 19077c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 19087247f888Srie char *aname = audit_objsearch(clmp, name, LA_SER_ORIG); 19097c478bd9Sstevel@tonic-gate 19107c478bd9Sstevel@tonic-gate /* 19117c478bd9Sstevel@tonic-gate * The auditor can indicate that this object should be ignored. 19127c478bd9Sstevel@tonic-gate */ 19137247f888Srie if (aname == NULL) { 19147247f888Srie DBG_CALL(Dbg_audit_terminate(lml, name)); 19157c478bd9Sstevel@tonic-gate return (0); 19167c478bd9Sstevel@tonic-gate } 19177c478bd9Sstevel@tonic-gate 19187c478bd9Sstevel@tonic-gate /* 19197247f888Srie * Protect ourselves from auditor mischief, by duplicating any 19207247f888Srie * alternative name. The original name has been allocated from 19217247f888Srie * expand(), so free this allocation before using the audit 19227247f888Srie * alternative. 19237c478bd9Sstevel@tonic-gate */ 19247247f888Srie if (name != aname) { 19257247f888Srie if ((aname = strdup(aname)) == NULL) { 19267247f888Srie eprintf(lml, ERR_FATAL, 19277247f888Srie MSG_INTL(MSG_GEN_AUDITERM), name); 19287247f888Srie return (0); 19297247f888Srie } 19307247f888Srie free((void *)*oname); 19317247f888Srie *oname = aname; 19327c478bd9Sstevel@tonic-gate } 19337c478bd9Sstevel@tonic-gate } 19347247f888Srie return (1); 19357c478bd9Sstevel@tonic-gate } 19367c478bd9Sstevel@tonic-gate 19377c478bd9Sstevel@tonic-gate /* 19387c478bd9Sstevel@tonic-gate * Having loaded an object and created a link-map to describe it, finish 19397c478bd9Sstevel@tonic-gate * processing this stage, including verifying any versioning requirements, 19407c478bd9Sstevel@tonic-gate * updating the objects mode, creating a handle if necessary, and adding this 19417c478bd9Sstevel@tonic-gate * object to existing handles if required. 19427c478bd9Sstevel@tonic-gate */ 1943390b98b5Srie static int 19447c478bd9Sstevel@tonic-gate load_finish(Lm_list *lml, const char *name, Rt_map *clmp, int nmode, 19457c478bd9Sstevel@tonic-gate uint_t flags, Grp_hdl **hdl, Rt_map *nlmp) 19467c478bd9Sstevel@tonic-gate { 1947cce0e03bSab196087 Aliste idx; 1948cce0e03bSab196087 Grp_hdl *ghp; 19497c478bd9Sstevel@tonic-gate int promote; 19507c478bd9Sstevel@tonic-gate 19517c478bd9Sstevel@tonic-gate /* 19527c478bd9Sstevel@tonic-gate * If this dependency is associated with a required version insure that 19537c478bd9Sstevel@tonic-gate * the version is present in the loaded file. 19547c478bd9Sstevel@tonic-gate */ 19557c478bd9Sstevel@tonic-gate if (((rtld_flags & RT_FL_NOVERSION) == 0) && 19567c478bd9Sstevel@tonic-gate (FCT(clmp) == &elf_fct) && VERNEED(clmp) && 19577c478bd9Sstevel@tonic-gate (LM_VERIFY_VERS(clmp)(name, clmp, nlmp) == 0)) 19587c478bd9Sstevel@tonic-gate return (0); 19597c478bd9Sstevel@tonic-gate 19607c478bd9Sstevel@tonic-gate /* 19617c478bd9Sstevel@tonic-gate * If this object has indicated that it should be isolated as a group 19627c478bd9Sstevel@tonic-gate * (DT_FLAGS_1 contains DF_1_GROUP - object was built with -B group), 19637c478bd9Sstevel@tonic-gate * or if the callers direct bindings indicate it should be isolated as 19647c478bd9Sstevel@tonic-gate * a group (DYNINFO flags contains FLG_DI_GROUP - dependency followed 19657c478bd9Sstevel@tonic-gate * -zgroupperm), establish the appropriate mode. 19667c478bd9Sstevel@tonic-gate * 19677c478bd9Sstevel@tonic-gate * The intent of an object defining itself as a group is to isolate the 19687c478bd9Sstevel@tonic-gate * relocation of the group within its own members, however, unless 19697c478bd9Sstevel@tonic-gate * opened through dlopen(), in which case we assume dlsym() will be used 19707c478bd9Sstevel@tonic-gate * to located symbols in the new object, we still need to associate it 19717c478bd9Sstevel@tonic-gate * with the caller for it to be bound with. This is equivalent to a 19727c478bd9Sstevel@tonic-gate * dlopen(RTLD_GROUP) and dlsym() using the returned handle. 19737c478bd9Sstevel@tonic-gate */ 19747c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) | flags) & FLG_RT_SETGROUP) { 19757c478bd9Sstevel@tonic-gate nmode &= ~RTLD_WORLD; 19767c478bd9Sstevel@tonic-gate nmode |= RTLD_GROUP; 19777c478bd9Sstevel@tonic-gate 19787c478bd9Sstevel@tonic-gate /* 19797c478bd9Sstevel@tonic-gate * If the object wasn't explicitly dlopen()'ed associate it with 19807c478bd9Sstevel@tonic-gate * the parent. 19817c478bd9Sstevel@tonic-gate */ 19829a411307Srie if ((flags & FLG_RT_HANDLE) == 0) 19837c478bd9Sstevel@tonic-gate nmode |= RTLD_PARENT; 19847c478bd9Sstevel@tonic-gate } 19857c478bd9Sstevel@tonic-gate 19867c478bd9Sstevel@tonic-gate /* 19877c478bd9Sstevel@tonic-gate * Establish new mode and flags. 19887c478bd9Sstevel@tonic-gate * 19897c478bd9Sstevel@tonic-gate * For patch backward compatibility, the following use of update_mode() 19907c478bd9Sstevel@tonic-gate * is disabled. 19917c478bd9Sstevel@tonic-gate */ 19927c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 19937c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 19947c478bd9Sstevel@tonic-gate promote = MODE(nlmp) |= 19957c478bd9Sstevel@tonic-gate (nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST)); 19967c478bd9Sstevel@tonic-gate else 19977c478bd9Sstevel@tonic-gate #endif 19987c478bd9Sstevel@tonic-gate promote = update_mode(nlmp, MODE(nlmp), nmode); 19997c478bd9Sstevel@tonic-gate 20007c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= flags; 20017c478bd9Sstevel@tonic-gate 20027c478bd9Sstevel@tonic-gate /* 20032926dd2eSrie * If this is a global object, ensure the associated link-map list can 20042926dd2eSrie * be rescanned for global, lazy dependencies. 20052926dd2eSrie */ 20062926dd2eSrie if (MODE(nlmp) & RTLD_GLOBAL) 20072926dd2eSrie LIST(nlmp)->lm_flags &= ~LML_FLG_NOPENDGLBLAZY; 20082926dd2eSrie 20092926dd2eSrie /* 20107c478bd9Sstevel@tonic-gate * If we've been asked to establish a handle create one for this object. 20117c478bd9Sstevel@tonic-gate * Or, if this object has already been analyzed, but this reference 20127c478bd9Sstevel@tonic-gate * requires that the mode of the object be promoted, also create a 20137c478bd9Sstevel@tonic-gate * handle to propagate the new modes to all this objects dependencies. 20147c478bd9Sstevel@tonic-gate */ 20157c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) | flags) & FLG_RT_HANDLE) || (promote && 20167c478bd9Sstevel@tonic-gate (FLAGS(nlmp) & FLG_RT_ANALYZED))) { 20178af2c5b9Srie uint_t oflags, hflags = 0, cdflags; 20187c478bd9Sstevel@tonic-gate 20198af2c5b9Srie /* 20208af2c5b9Srie * Establish any flags for the handle (Grp_hdl). 20218af2c5b9Srie * 20228af2c5b9Srie * . Use of the RTLD_FIRST flag indicates that only the first 20238af2c5b9Srie * dependency on the handle (the new object) can be used 20248af2c5b9Srie * to satisfy dlsym() requests. 20258af2c5b9Srie */ 20267c478bd9Sstevel@tonic-gate if (nmode & RTLD_FIRST) 20278af2c5b9Srie hflags = GPH_FIRST; 20288af2c5b9Srie 20298af2c5b9Srie /* 20308af2c5b9Srie * Establish the flags for this callers dependency descriptor 20318af2c5b9Srie * (Grp_desc). 20328af2c5b9Srie * 20338af2c5b9Srie * . The creation of a handle associated a descriptor for the 20348af2c5b9Srie * new object and descriptor for the parent (caller). 20358af2c5b9Srie * Typically, the handle is created for dlopen() or for 20368af2c5b9Srie * filtering. A handle may also be created to promote 20378af2c5b9Srie * the callers modes (RTLD_NOW) to the new object. In this 20388af2c5b9Srie * latter case, the handle/descriptor are torn down once 20398af2c5b9Srie * the mode propagation has occurred. 20408af2c5b9Srie * 20418af2c5b9Srie * . Use of the RTLD_PARENT flag indicates that the parent 20428af2c5b9Srie * can be relocated against. 20438af2c5b9Srie */ 20448af2c5b9Srie if (((FLAGS(nlmp) | flags) & FLG_RT_HANDLE) == 0) 20458af2c5b9Srie cdflags = GPD_PROMOTE; 20468af2c5b9Srie else 20478af2c5b9Srie cdflags = GPD_PARENT; 20488af2c5b9Srie if (nmode & RTLD_PARENT) 20498af2c5b9Srie cdflags |= GPD_RELOC; 20507c478bd9Sstevel@tonic-gate 20517c478bd9Sstevel@tonic-gate /* 20527c478bd9Sstevel@tonic-gate * Now that a handle is being created, remove this state from 20537c478bd9Sstevel@tonic-gate * the object so that it doesn't mistakenly get inherited by 20547c478bd9Sstevel@tonic-gate * a dependency. 20557c478bd9Sstevel@tonic-gate */ 20567c478bd9Sstevel@tonic-gate oflags = FLAGS(nlmp); 20577c478bd9Sstevel@tonic-gate FLAGS(nlmp) &= ~FLG_RT_HANDLE; 20587c478bd9Sstevel@tonic-gate 20598af2c5b9Srie DBG_CALL(Dbg_file_hdl_title(DBG_HDL_ADD)); 20608af2c5b9Srie if ((ghp = hdl_create(lml, nlmp, clmp, hflags, 20618af2c5b9Srie (GPD_DLSYM | GPD_RELOC | GPD_ADDEPS), cdflags)) == 0) 20627c478bd9Sstevel@tonic-gate return (0); 20637c478bd9Sstevel@tonic-gate 20647c478bd9Sstevel@tonic-gate /* 20657c478bd9Sstevel@tonic-gate * Add any dependencies that are already loaded, to the handle. 20667c478bd9Sstevel@tonic-gate */ 206702ca3e02Srie if (hdl_initialize(ghp, nlmp, nmode, promote) == 0) 20687c478bd9Sstevel@tonic-gate return (0); 20697c478bd9Sstevel@tonic-gate 20707c478bd9Sstevel@tonic-gate if (hdl) 20717c478bd9Sstevel@tonic-gate *hdl = ghp; 20727c478bd9Sstevel@tonic-gate 20737c478bd9Sstevel@tonic-gate /* 20748af2c5b9Srie * If we were asked to create a handle, we're done. 20757c478bd9Sstevel@tonic-gate */ 20767c478bd9Sstevel@tonic-gate if ((oflags | flags) & FLG_RT_HANDLE) 20777c478bd9Sstevel@tonic-gate return (1); 20787c478bd9Sstevel@tonic-gate 20798af2c5b9Srie /* 20808af2c5b9Srie * If the handle was created to promote modes from the parent 20818af2c5b9Srie * (caller) to the new object, then this relationship needs to 20828af2c5b9Srie * be removed to ensure the handle doesn't prevent the new 20838af2c5b9Srie * objects from being deleted if required. If the parent is 20848af2c5b9Srie * the only dependency on the handle, then the handle can be 20858af2c5b9Srie * completely removed. However, the handle may have already 20868af2c5b9Srie * existed, in which case only the parent descriptor can be 20878af2c5b9Srie * deleted from the handle, or at least the GPD_PROMOTE flag 20888af2c5b9Srie * removed from the descriptor. 20898af2c5b9Srie * 20908af2c5b9Srie * Fall through to carry out any group processing. 20918af2c5b9Srie */ 20928af2c5b9Srie free_hdl(ghp, clmp, GPD_PROMOTE); 20937c478bd9Sstevel@tonic-gate } 20947c478bd9Sstevel@tonic-gate 20957c478bd9Sstevel@tonic-gate /* 20967c478bd9Sstevel@tonic-gate * If the caller isn't part of a group we're done. 20977c478bd9Sstevel@tonic-gate */ 2098cce0e03bSab196087 if (GROUPS(clmp) == NULL) 20997c478bd9Sstevel@tonic-gate return (1); 21007c478bd9Sstevel@tonic-gate 21017c478bd9Sstevel@tonic-gate /* 21027c478bd9Sstevel@tonic-gate * Determine if our caller is already associated with a handle, if so 21037c478bd9Sstevel@tonic-gate * we need to add this object to any handles that already exist. 21047c478bd9Sstevel@tonic-gate * Traverse the list of groups our caller is a member of and add this 21057c478bd9Sstevel@tonic-gate * new link-map to those groups. 21067c478bd9Sstevel@tonic-gate */ 21078af2c5b9Srie DBG_CALL(Dbg_file_hdl_title(DBG_HDL_ADD)); 2108cce0e03bSab196087 for (APLIST_TRAVERSE(GROUPS(clmp), idx, ghp)) { 2109cce0e03bSab196087 Aliste idx1; 21107c478bd9Sstevel@tonic-gate Grp_desc *gdp; 21117c478bd9Sstevel@tonic-gate int exist; 2112cce0e03bSab196087 Rt_map *dlmp1; 2113cce0e03bSab196087 APlist *lmalp = NULL; 21147c478bd9Sstevel@tonic-gate 21157c478bd9Sstevel@tonic-gate /* 21167c478bd9Sstevel@tonic-gate * If the caller doesn't indicate that its dependencies should 21177c478bd9Sstevel@tonic-gate * be added to a handle, ignore it. This case identifies a 21187c478bd9Sstevel@tonic-gate * parent of a dlopen(RTLD_PARENT) request. 21197c478bd9Sstevel@tonic-gate */ 2120cce0e03bSab196087 for (ALIST_TRAVERSE(ghp->gh_depends, idx1, gdp)) { 21217c478bd9Sstevel@tonic-gate if (gdp->gd_depend == clmp) 21227c478bd9Sstevel@tonic-gate break; 21237c478bd9Sstevel@tonic-gate } 21247c478bd9Sstevel@tonic-gate if ((gdp->gd_flags & GPD_ADDEPS) == 0) 21257c478bd9Sstevel@tonic-gate continue; 21267c478bd9Sstevel@tonic-gate 21277c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, nlmp, 2128efb9e8b8Srie (GPD_DLSYM | GPD_RELOC | GPD_ADDEPS))) == 0) 21297c478bd9Sstevel@tonic-gate return (0); 21307c478bd9Sstevel@tonic-gate 21317c478bd9Sstevel@tonic-gate /* 21327c478bd9Sstevel@tonic-gate * If this member already exists then its dependencies will 21337c478bd9Sstevel@tonic-gate * have already been processed. 21347c478bd9Sstevel@tonic-gate */ 21357c478bd9Sstevel@tonic-gate if (exist == ALE_EXISTS) 21367c478bd9Sstevel@tonic-gate continue; 21377c478bd9Sstevel@tonic-gate 21387c478bd9Sstevel@tonic-gate /* 21397c478bd9Sstevel@tonic-gate * If the object we've added has just been opened, it will not 21407c478bd9Sstevel@tonic-gate * yet have been processed for its dependencies, these will be 21417c478bd9Sstevel@tonic-gate * added on later calls to load_one(). If it doesn't have any 21427c478bd9Sstevel@tonic-gate * dependencies we're also done. 21437c478bd9Sstevel@tonic-gate */ 21447c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) || 2145cce0e03bSab196087 (DEPENDS(nlmp) == NULL)) 21467c478bd9Sstevel@tonic-gate continue; 21477c478bd9Sstevel@tonic-gate 21487c478bd9Sstevel@tonic-gate /* 21497c478bd9Sstevel@tonic-gate * Otherwise, this object exists and has dependencies, so add 21507c478bd9Sstevel@tonic-gate * all of its dependencies to the handle were operating on. 21517c478bd9Sstevel@tonic-gate */ 2152cce0e03bSab196087 if (aplist_append(&lmalp, nlmp, AL_CNT_DEPCLCT) == 0) 21537c478bd9Sstevel@tonic-gate return (0); 21547c478bd9Sstevel@tonic-gate 2155cce0e03bSab196087 for (APLIST_TRAVERSE(lmalp, idx1, dlmp1)) { 2156cce0e03bSab196087 Aliste idx2; 2157cce0e03bSab196087 Bnd_desc *bdp; 21587c478bd9Sstevel@tonic-gate 21597c478bd9Sstevel@tonic-gate /* 21607c478bd9Sstevel@tonic-gate * Add any dependencies of this dependency to the 21617c478bd9Sstevel@tonic-gate * dynamic dependency list so they can be further 21627c478bd9Sstevel@tonic-gate * processed. 21637c478bd9Sstevel@tonic-gate */ 2164cce0e03bSab196087 for (APLIST_TRAVERSE(DEPENDS(dlmp1), idx2, bdp)) { 21657c478bd9Sstevel@tonic-gate Rt_map *dlmp2 = bdp->b_depend; 21667c478bd9Sstevel@tonic-gate 21677c478bd9Sstevel@tonic-gate if ((bdp->b_flags & BND_NEEDED) == 0) 21687c478bd9Sstevel@tonic-gate continue; 21697c478bd9Sstevel@tonic-gate 2170cce0e03bSab196087 if (aplist_test(&lmalp, dlmp2, 21717c478bd9Sstevel@tonic-gate AL_CNT_DEPCLCT) == 0) { 21727c478bd9Sstevel@tonic-gate free(lmalp); 21737c478bd9Sstevel@tonic-gate return (0); 21747c478bd9Sstevel@tonic-gate } 21757c478bd9Sstevel@tonic-gate } 21767c478bd9Sstevel@tonic-gate 21777c478bd9Sstevel@tonic-gate if (nlmp == dlmp1) 21787c478bd9Sstevel@tonic-gate continue; 21797c478bd9Sstevel@tonic-gate 21807c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, dlmp1, 2181efb9e8b8Srie (GPD_DLSYM | GPD_RELOC | GPD_ADDEPS))) != 0) { 21827247f888Srie if (exist == ALE_CREATE) { 21837c478bd9Sstevel@tonic-gate (void) update_mode(dlmp1, MODE(dlmp1), 21847c478bd9Sstevel@tonic-gate nmode); 21857247f888Srie } 21867c478bd9Sstevel@tonic-gate continue; 21877c478bd9Sstevel@tonic-gate } 21887c478bd9Sstevel@tonic-gate free(lmalp); 21897c478bd9Sstevel@tonic-gate return (0); 21907c478bd9Sstevel@tonic-gate } 21917c478bd9Sstevel@tonic-gate free(lmalp); 21927c478bd9Sstevel@tonic-gate } 21937c478bd9Sstevel@tonic-gate return (1); 21947c478bd9Sstevel@tonic-gate } 21957c478bd9Sstevel@tonic-gate 21967c478bd9Sstevel@tonic-gate /* 21977c478bd9Sstevel@tonic-gate * The central routine for loading shared objects. Insures ldd() diagnostics, 21987c478bd9Sstevel@tonic-gate * handles and any other related additions are all done in one place. 21997c478bd9Sstevel@tonic-gate */ 2200fb1354edSrie static Rt_map * 22017247f888Srie _load_path(Lm_list *lml, Aliste lmco, const char **oname, Rt_map *clmp, 2202fb1354edSrie int nmode, uint_t flags, Grp_hdl ** hdl, Fdesc *nfdp, Rej_desc *rej) 22037c478bd9Sstevel@tonic-gate { 22047c478bd9Sstevel@tonic-gate Rt_map *nlmp; 22057247f888Srie const char *name = *oname; 22067c478bd9Sstevel@tonic-gate 22077c478bd9Sstevel@tonic-gate if ((nmode & RTLD_NOLOAD) == 0) { 22087c478bd9Sstevel@tonic-gate /* 22097c478bd9Sstevel@tonic-gate * If this isn't a noload request attempt to load the file. 22107247f888Srie * Note, the name of the file may be changed by an auditor. 22117c478bd9Sstevel@tonic-gate */ 22127247f888Srie if ((load_trace(lml, oname, clmp)) == 0) 22137c478bd9Sstevel@tonic-gate return (0); 22147c478bd9Sstevel@tonic-gate 22157247f888Srie name = *oname; 22167247f888Srie 22177c478bd9Sstevel@tonic-gate if ((nlmp = load_so(lml, lmco, name, clmp, flags, 2218fb1354edSrie nfdp, rej)) == 0) 22197c478bd9Sstevel@tonic-gate return (0); 22207c478bd9Sstevel@tonic-gate 22217c478bd9Sstevel@tonic-gate /* 22227c478bd9Sstevel@tonic-gate * If we've loaded a library which identifies itself as not 22237c478bd9Sstevel@tonic-gate * being dlopen()'able catch it here. Let non-dlopen()'able 22247c478bd9Sstevel@tonic-gate * objects through under RTLD_CONFGEN as they're only being 22257c478bd9Sstevel@tonic-gate * mapped to be dldump()'ed. 22267c478bd9Sstevel@tonic-gate */ 22277c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_APPLIC) && ((FLAGS(nlmp) & 22287c478bd9Sstevel@tonic-gate (FLG_RT_NOOPEN | FLG_RT_RELOCED)) == FLG_RT_NOOPEN) && 22297c478bd9Sstevel@tonic-gate ((nmode & RTLD_CONFGEN) == 0)) { 22307c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 22317c478bd9Sstevel@tonic-gate 22327c478bd9Sstevel@tonic-gate _rej.rej_name = name; 22337c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 22347c478bd9Sstevel@tonic-gate _rej.rej_str = MSG_INTL(MSG_GEN_NOOPEN); 22355aefb655Srie DBG_CALL(Dbg_file_rejected(lml, &_rej)); 223631fdd7caSab196087 rejection_inherit(rej, &_rej); 22377c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 22387c478bd9Sstevel@tonic-gate return (0); 22397c478bd9Sstevel@tonic-gate } 22407c478bd9Sstevel@tonic-gate } else { 22417c478bd9Sstevel@tonic-gate /* 22427c478bd9Sstevel@tonic-gate * If it's a NOLOAD request - check to see if the object 22437c478bd9Sstevel@tonic-gate * has already been loaded. 22447c478bd9Sstevel@tonic-gate */ 22457c478bd9Sstevel@tonic-gate /* LINTED */ 22460aa3cd4dSrie if (nlmp = is_so_loaded(lml, name)) { 22477c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_VERBOSE) && 22487c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 22497c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, 22507c478bd9Sstevel@tonic-gate NAME(clmp)); 22517247f888Srie /* BEGIN CSTYLED */ 22527c478bd9Sstevel@tonic-gate if (*name == '/') 22537c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 22547c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 22557c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 22567c478bd9Sstevel@tonic-gate else 22577c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 22587c478bd9Sstevel@tonic-gate name, NAME(nlmp), 22597c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 22607c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 22617247f888Srie /* END CSTYLED */ 22627c478bd9Sstevel@tonic-gate } 22637c478bd9Sstevel@tonic-gate } else { 22647c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 22657c478bd9Sstevel@tonic-gate 22667c478bd9Sstevel@tonic-gate _rej.rej_name = name; 22677c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 22687c478bd9Sstevel@tonic-gate _rej.rej_str = strerror(ENOENT); 22695aefb655Srie DBG_CALL(Dbg_file_rejected(lml, &_rej)); 227031fdd7caSab196087 rejection_inherit(rej, &_rej); 22717c478bd9Sstevel@tonic-gate return (0); 22727c478bd9Sstevel@tonic-gate } 22737c478bd9Sstevel@tonic-gate } 22747c478bd9Sstevel@tonic-gate 22757c478bd9Sstevel@tonic-gate /* 22767c478bd9Sstevel@tonic-gate * Finish processing this loaded object. 22777c478bd9Sstevel@tonic-gate */ 2278390b98b5Srie if (load_finish(lml, name, clmp, nmode, flags, hdl, nlmp) == 0) { 2279390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 22807c478bd9Sstevel@tonic-gate 22817c478bd9Sstevel@tonic-gate /* 2282390b98b5Srie * If this object has already been analyzed, then it is in use, 2283390b98b5Srie * so even though this operation has failed, it should not be 2284390b98b5Srie * torn down. 22857c478bd9Sstevel@tonic-gate */ 22867c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) 22877c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 22887c478bd9Sstevel@tonic-gate return (0); 22897c478bd9Sstevel@tonic-gate } 22907c478bd9Sstevel@tonic-gate 22917c478bd9Sstevel@tonic-gate /* 2292390b98b5Srie * If this object is new, and we're being audited, tell the audit 2293390b98b5Srie * library of the file we've just opened. Note, if the new link-map 2294390b98b5Srie * requires local auditing of its dependencies we also register its 2295390b98b5Srie * opening. 2296390b98b5Srie */ 2297390b98b5Srie if (FLAGS(nlmp) & FLG_RT_NEWLOAD) { 2298390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 2299390b98b5Srie 2300390b98b5Srie if (((lml->lm_tflags | FLAGS1(clmp) | FLAGS1(nlmp)) & 2301390b98b5Srie LML_TFLG_AUD_MASK) && (((lml->lm_flags | 2302390b98b5Srie LIST(clmp)->lm_flags) & LML_FLG_NOAUDIT) == 0)) { 2303390b98b5Srie if (audit_objopen(clmp, nlmp) == 0) { 2304390b98b5Srie remove_so(lml, nlmp); 2305390b98b5Srie return (0); 2306390b98b5Srie } 2307390b98b5Srie } 2308390b98b5Srie } 2309390b98b5Srie return (nlmp); 2310390b98b5Srie } 2311390b98b5Srie 2312fb1354edSrie Rt_map * 23137247f888Srie load_path(Lm_list *lml, Aliste lmco, const char **name, Rt_map *clmp, 2314fb1354edSrie int nmode, uint_t flags, Grp_hdl **hdl, Fdesc *cfdp, Rej_desc *rej) 2315fb1354edSrie { 2316fb1354edSrie Rt_map *lmp; 2317fb1354edSrie Fdesc nfdp = { 0 }; 2318fb1354edSrie 2319fb1354edSrie /* 2320fb1354edSrie * If this path resulted from a $HWCAP specification, then the best 2321fb1354edSrie * hardware capability object has already been establish, and is 2322fb1354edSrie * available in the calling file descriptor. 2323fb1354edSrie */ 2324fb1354edSrie if (flags & FLG_RT_HWCAP) { 2325fb1354edSrie if (cfdp->fd_lmp == 0) { 2326fb1354edSrie /* 2327fb1354edSrie * If this object hasn't yet been mapped, re-establish 2328fb1354edSrie * the file descriptor structure to reflect this objects 2329fb1354edSrie * original initial page mapping. Make sure any present 2330fb1354edSrie * file descriptor mapping is removed before overwriting 2331fb1354edSrie * the structure. 2332fb1354edSrie */ 2333fb1354edSrie #if defined(MAP_ALIGN) 2334fb1354edSrie if (fmap->fm_maddr && 2335fb1354edSrie ((fmap->fm_mflags & MAP_ALIGN) == 0)) 2336fb1354edSrie #else 2337fb1354edSrie if (fmap->fm_maddr) 2338fb1354edSrie #endif 2339fb1354edSrie (void) munmap(fmap->fm_maddr, fmap->fm_msize); 234046d4d531Srie 234146d4d531Srie *fmap = cfdp->fd_fmap; 2342fb1354edSrie } 2343fb1354edSrie nfdp = *cfdp; 2344fb1354edSrie } 2345fb1354edSrie 2346fb1354edSrie lmp = _load_path(lml, lmco, name, clmp, nmode, flags, hdl, &nfdp, rej); 2347fb1354edSrie 2348fb1354edSrie /* 2349fb1354edSrie * If this path originated from a $HWCAP specification, re-establish the 2350fb1354edSrie * fdesc information. For single paged objects, such as filters, the 2351fb1354edSrie * original mapping may have been sufficient to capture the file, thus 2352fb1354edSrie * this mapping needs to be reset to insure it doesn't mistakenly get 2353fb1354edSrie * unmapped as part of HWCAP cleanup. 2354fb1354edSrie */ 235546d4d531Srie if ((flags & FLG_RT_HWCAP) && (cfdp->fd_lmp == 0)) { 2356fb1354edSrie cfdp->fd_fmap.fm_maddr = fmap->fm_maddr; 2357fb1354edSrie cfdp->fd_fmap.fm_mflags = fmap->fm_mflags; 2358fb1354edSrie cfdp->fd_fd = nfdp.fd_fd; 2359fb1354edSrie } 2360fb1354edSrie 2361fb1354edSrie return (lmp); 2362fb1354edSrie } 2363fb1354edSrie 2364390b98b5Srie /* 23657c478bd9Sstevel@tonic-gate * Load one object from a possible list of objects. Typically, for requests 23667c478bd9Sstevel@tonic-gate * such as NEEDED's, only one object is specified. However, this object could 23677c478bd9Sstevel@tonic-gate * be specified using $ISALIST or $HWCAP, in which case only the first object 23687c478bd9Sstevel@tonic-gate * that can be loaded is used (ie. the best). 23697c478bd9Sstevel@tonic-gate */ 23707c478bd9Sstevel@tonic-gate Rt_map * 23717c478bd9Sstevel@tonic-gate load_one(Lm_list *lml, Aliste lmco, Pnode *pnp, Rt_map *clmp, int mode, 23727c478bd9Sstevel@tonic-gate uint_t flags, Grp_hdl ** hdl) 23737c478bd9Sstevel@tonic-gate { 23747c478bd9Sstevel@tonic-gate Rej_desc rej = { 0 }; 23757c478bd9Sstevel@tonic-gate Pnode *tpnp; 23767c478bd9Sstevel@tonic-gate const char *name; 23777c478bd9Sstevel@tonic-gate 23787c478bd9Sstevel@tonic-gate for (tpnp = pnp; tpnp && tpnp->p_name; tpnp = tpnp->p_next) { 23797247f888Srie Rt_map *tlmp; 23807247f888Srie 23817c478bd9Sstevel@tonic-gate /* 23827c478bd9Sstevel@tonic-gate * A Hardware capabilities requirement can itself expand into 23837c478bd9Sstevel@tonic-gate * a number of candidates. 23847c478bd9Sstevel@tonic-gate */ 23857c478bd9Sstevel@tonic-gate if (tpnp->p_orig & PN_TKN_HWCAP) { 23867c478bd9Sstevel@tonic-gate if ((tlmp = load_hwcap(lml, lmco, tpnp->p_name, clmp, 23877c478bd9Sstevel@tonic-gate mode, (flags | FLG_RT_HWCAP), hdl, &rej)) != 0) { 23887c478bd9Sstevel@tonic-gate remove_rej(&rej); 23897c478bd9Sstevel@tonic-gate return (tlmp); 23907c478bd9Sstevel@tonic-gate } 23917c478bd9Sstevel@tonic-gate } else { 23927247f888Srie if ((tlmp = load_path(lml, lmco, &tpnp->p_name, clmp, 23937c478bd9Sstevel@tonic-gate mode, flags, hdl, 0, &rej)) != 0) { 23947c478bd9Sstevel@tonic-gate remove_rej(&rej); 23957c478bd9Sstevel@tonic-gate return (tlmp); 23967c478bd9Sstevel@tonic-gate } 23977c478bd9Sstevel@tonic-gate } 23987c478bd9Sstevel@tonic-gate } 23997c478bd9Sstevel@tonic-gate 24007c478bd9Sstevel@tonic-gate /* 24017c478bd9Sstevel@tonic-gate * If this pathname originated from an expanded token, use the original 24027c478bd9Sstevel@tonic-gate * for any diagnostic output. 24037c478bd9Sstevel@tonic-gate */ 24047c478bd9Sstevel@tonic-gate if ((name = pnp->p_oname) == 0) 24057c478bd9Sstevel@tonic-gate name = pnp->p_name; 24067c478bd9Sstevel@tonic-gate 24077c478bd9Sstevel@tonic-gate file_notfound(lml, name, clmp, flags, &rej); 24087c478bd9Sstevel@tonic-gate remove_rej(&rej); 24097c478bd9Sstevel@tonic-gate return (0); 24107c478bd9Sstevel@tonic-gate } 24117c478bd9Sstevel@tonic-gate 24127c478bd9Sstevel@tonic-gate /* 24139a411307Srie * Determine whether a symbol is defined as an interposer. 24149a411307Srie */ 24159a411307Srie int 24169a411307Srie is_sym_interposer(Rt_map *lmp, Sym *sym) 24179a411307Srie { 24189a411307Srie Syminfo *sip = SYMINFO(lmp); 24199a411307Srie 24209a411307Srie if (sip) { 24219a411307Srie ulong_t ndx; 24229a411307Srie 24239a411307Srie ndx = (((ulong_t)sym - (ulong_t)SYMTAB(lmp)) / SYMENT(lmp)); 24249a411307Srie /* LINTED */ 24259a411307Srie sip = (Syminfo *)((char *)sip + (ndx * SYMINENT(lmp))); 24269a411307Srie if (sip->si_flags & SYMINFO_FLG_INTERPOSE) 24279a411307Srie return (1); 24289a411307Srie } 24299a411307Srie return (0); 24309a411307Srie } 24319a411307Srie 24329a411307Srie /* 24337c478bd9Sstevel@tonic-gate * While processing direct or group bindings, determine whether the object to 24347c478bd9Sstevel@tonic-gate * which we've bound can be interposed upon. In this context, copy relocations 24357c478bd9Sstevel@tonic-gate * are a form of interposition. 24367c478bd9Sstevel@tonic-gate */ 24377c478bd9Sstevel@tonic-gate static Sym * 24387c478bd9Sstevel@tonic-gate lookup_sym_interpose(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Lm_list *lml, 2439aa736cbeSrie Sym *osym) 24407c478bd9Sstevel@tonic-gate { 24417c478bd9Sstevel@tonic-gate Rt_map *lmp; 24427c478bd9Sstevel@tonic-gate Slookup sl; 24437c478bd9Sstevel@tonic-gate 24447c478bd9Sstevel@tonic-gate /* 24457c478bd9Sstevel@tonic-gate * If we've bound to a copy relocation definition then we need to assign 24467c478bd9Sstevel@tonic-gate * this binding to the original copy reference. Fabricate an inter- 24477c478bd9Sstevel@tonic-gate * position diagnostic, as this is a legitimate form of interposition. 24487c478bd9Sstevel@tonic-gate */ 24497c478bd9Sstevel@tonic-gate if (FLAGS1(*dlmp) & FL1_RT_COPYTOOK) { 24507c478bd9Sstevel@tonic-gate Rel_copy *rcp; 2451cce0e03bSab196087 Aliste idx; 24527c478bd9Sstevel@tonic-gate 2453cce0e03bSab196087 for (ALIST_TRAVERSE(COPY_R(*dlmp), idx, rcp)) { 2454aa736cbeSrie if ((osym == rcp->r_dsym) || (osym->st_value && 2455aa736cbeSrie (osym->st_value == rcp->r_dsym->st_value))) { 24567c478bd9Sstevel@tonic-gate *dlmp = rcp->r_rlmp; 24577c478bd9Sstevel@tonic-gate *binfo |= 24587c478bd9Sstevel@tonic-gate (DBG_BINFO_INTERPOSE | DBG_BINFO_COPYREF); 24597c478bd9Sstevel@tonic-gate return (rcp->r_rsym); 24607c478bd9Sstevel@tonic-gate } 24617c478bd9Sstevel@tonic-gate } 24627c478bd9Sstevel@tonic-gate } 24637c478bd9Sstevel@tonic-gate 2464aa736cbeSrie /* 2465aa736cbeSrie * Prior to Solaris 8, external references from an executable that were 2466aa736cbeSrie * bound to an uninitialized variable (.bss) within a shared object did 2467aa736cbeSrie * not establish a copy relocation. This was thought to be an 2468aa736cbeSrie * optimization, to prevent copying zero's to zero's. Typically, 2469aa736cbeSrie * interposition took its course, with the shared object binding to the 2470aa736cbeSrie * executables data definition. 2471aa736cbeSrie * 2472aa736cbeSrie * This scenario can be broken when this old executable runs against a 2473aa736cbeSrie * new shared object that is directly bound. With no copy-relocation 2474aa736cbeSrie * record, ld.so.1 has no data to trigger the normal vectoring of the 2475aa736cbeSrie * binding to the executable. 2476aa736cbeSrie * 2477aa736cbeSrie * Starting with Solaris 8, a DT_FLAGS entry is written to all objects, 2478aa736cbeSrie * regardless of there being any DF_ flags entries. Therefore, an 2479aa736cbeSrie * object without this dynamic tag is susceptible to the copy relocation 2480aa736cbeSrie * issue. If the executable has no DT_FLAGS tag, and contains the same 2481aa736cbeSrie * .bss symbol definition as has been directly bound to, redirect the 2482aa736cbeSrie * binding to the executables data definition. 2483aa736cbeSrie */ 2484aa736cbeSrie lmp = lml->lm_head; 2485aa736cbeSrie sl = *slp; 2486aa736cbeSrie sl.sl_imap = lmp; 2487aa736cbeSrie if (((FLAGS2(lmp) & FL2_RT_DTFLAGS) == 0) && 2488aa736cbeSrie copy_zerobits(*dlmp, osym)) { 2489aa736cbeSrie Rt_map *ilmp; 2490aa736cbeSrie Sym *isym; 2491aa736cbeSrie 2492aa736cbeSrie /* 2493aa736cbeSrie * Determine whether the same symbol name exists within the 2494aa736cbeSrie * executable, that the size and type of symbol are the same, 2495aa736cbeSrie * and that the symbol is also associated with .bss. 2496aa736cbeSrie */ 2497aa736cbeSrie if (((isym = SYMINTP(lmp)(&sl, &ilmp, binfo)) != NULL) && 2498aa736cbeSrie (isym->st_size == osym->st_size) && 2499aa736cbeSrie (isym->st_info == osym->st_info) && 2500aa736cbeSrie copy_zerobits(lmp, isym)) { 2501aa736cbeSrie *dlmp = lmp; 2502aa736cbeSrie *binfo |= (DBG_BINFO_INTERPOSE | DBG_BINFO_COPYREF); 2503aa736cbeSrie return (isym); 2504aa736cbeSrie } 2505aa736cbeSrie } 2506aa736cbeSrie 25077c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_INTRPOSE) == 0) 25087c478bd9Sstevel@tonic-gate return ((Sym *)0); 25097c478bd9Sstevel@tonic-gate 25107c478bd9Sstevel@tonic-gate /* 25117c478bd9Sstevel@tonic-gate * Traverse the list of known interposers to determine whether any 25127c478bd9Sstevel@tonic-gate * offer the same symbol. Note, the head of the link-map could be 2513aa736cbeSrie * identified as an interposer. Otherwise, skip the head of the 2514aa736cbeSrie * link-map, so that we don't bind to any .plt references, or 2515aa736cbeSrie * copy-relocation destinations unintentionally. 25167c478bd9Sstevel@tonic-gate */ 25177c478bd9Sstevel@tonic-gate lmp = lml->lm_head; 25187c478bd9Sstevel@tonic-gate sl = *slp; 25199a411307Srie if (((FLAGS(lmp) & MSK_RT_INTPOSE) == 0) || (sl.sl_flags & LKUP_COPY)) 25207c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(lmp); 25217c478bd9Sstevel@tonic-gate 25227c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 25237c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_DELETE) 25247c478bd9Sstevel@tonic-gate continue; 25259a411307Srie if ((FLAGS(lmp) & MSK_RT_INTPOSE) == 0) 25267c478bd9Sstevel@tonic-gate break; 25277c478bd9Sstevel@tonic-gate 252860758829Srie if (callable(lmp, *dlmp, 0, sl.sl_flags)) { 25299a411307Srie Rt_map *ilmp; 2530aa736cbeSrie Sym *isym; 25319a411307Srie 25327c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 2533aa736cbeSrie if (isym = SYMINTP(lmp)(&sl, &ilmp, binfo)) { 25349a411307Srie /* 25359a411307Srie * If this object provides individual symbol 25369a411307Srie * interposers, make sure that the symbol we 25379a411307Srie * have found is tagged as an interposer. 25389a411307Srie */ 25399a411307Srie if ((FLAGS(ilmp) & FLG_RT_SYMINTPO) && 2540aa736cbeSrie (is_sym_interposer(ilmp, isym) == 0)) 25419a411307Srie continue; 25429a411307Srie 25439a411307Srie /* 25449a411307Srie * Indicate this binding has occurred to an 25459a411307Srie * interposer, and return the symbol. 25469a411307Srie */ 25477c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_INTERPOSE; 25489a411307Srie *dlmp = ilmp; 2549aa736cbeSrie return (isym); 25507c478bd9Sstevel@tonic-gate } 25517c478bd9Sstevel@tonic-gate } 25527c478bd9Sstevel@tonic-gate } 25537c478bd9Sstevel@tonic-gate return ((Sym *)0); 25547c478bd9Sstevel@tonic-gate } 25557c478bd9Sstevel@tonic-gate 25567c478bd9Sstevel@tonic-gate /* 25577c478bd9Sstevel@tonic-gate * If an object specifies direct bindings (it contains a syminfo structure 25587c478bd9Sstevel@tonic-gate * describing where each binding was established during link-editing, and the 25597c478bd9Sstevel@tonic-gate * object was built -Bdirect), then look for the symbol in the specific object. 25607c478bd9Sstevel@tonic-gate */ 25617c478bd9Sstevel@tonic-gate static Sym * 25627c478bd9Sstevel@tonic-gate lookup_sym_direct(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Syminfo *sip, 25637c478bd9Sstevel@tonic-gate Rt_map *lmp) 25647c478bd9Sstevel@tonic-gate { 25657c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 25667c478bd9Sstevel@tonic-gate Sym *sym; 25677c478bd9Sstevel@tonic-gate Slookup sl; 25687c478bd9Sstevel@tonic-gate 25697c478bd9Sstevel@tonic-gate /* 25707c478bd9Sstevel@tonic-gate * If a direct binding resolves to the definition of a copy relocated 25717c478bd9Sstevel@tonic-gate * variable, it must be redirected to the copy (in the executable) that 25727c478bd9Sstevel@tonic-gate * will eventually be made. Typically, this redirection occurs in 25737c478bd9Sstevel@tonic-gate * lookup_sym_interpose(). But, there's an edge condition. If a 25747c478bd9Sstevel@tonic-gate * directly bound executable contains pic code, there may be a 25757c478bd9Sstevel@tonic-gate * reference to a definition that will eventually have a copy made. 25767c478bd9Sstevel@tonic-gate * However, this copy relocation may not yet have occurred, because 25777c478bd9Sstevel@tonic-gate * the relocation making this reference comes before the relocation 25787c478bd9Sstevel@tonic-gate * that will create the copy. 25797c478bd9Sstevel@tonic-gate * Under direct bindings, the syminfo indicates that a copy will be 25807c478bd9Sstevel@tonic-gate * taken (SYMINFO_FLG_COPY). This can only be set in an executable. 25817c478bd9Sstevel@tonic-gate * Thus, the caller must be the executable, so bind to the destination 25827c478bd9Sstevel@tonic-gate * of the copy within the executable. 25837c478bd9Sstevel@tonic-gate */ 25847c478bd9Sstevel@tonic-gate if (((slp->sl_flags & LKUP_COPY) == 0) && 25857c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_COPY)) { 25867c478bd9Sstevel@tonic-gate 25877c478bd9Sstevel@tonic-gate slp->sl_imap = LIST(clmp)->lm_head; 25887c478bd9Sstevel@tonic-gate if (sym = SYMINTP(clmp)(slp, dlmp, binfo)) 25897c478bd9Sstevel@tonic-gate *binfo |= (DBG_BINFO_DIRECT | DBG_BINFO_COPYREF); 25907c478bd9Sstevel@tonic-gate return (sym); 25917c478bd9Sstevel@tonic-gate } 25927c478bd9Sstevel@tonic-gate 25937c478bd9Sstevel@tonic-gate /* 2594efb9e8b8Srie * If we need to directly bind to our parent, start looking in each 2595efb9e8b8Srie * callers link map. 25967c478bd9Sstevel@tonic-gate */ 25977c478bd9Sstevel@tonic-gate sl = *slp; 25987c478bd9Sstevel@tonic-gate sl.sl_flags |= LKUP_DIRECT; 25997c478bd9Sstevel@tonic-gate sym = 0; 26007c478bd9Sstevel@tonic-gate 26017c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_PARENT) { 2602cce0e03bSab196087 Aliste idx1; 2603cce0e03bSab196087 Bnd_desc *bdp; 2604cce0e03bSab196087 Grp_hdl *ghp; 26057c478bd9Sstevel@tonic-gate 2606efb9e8b8Srie /* 2607efb9e8b8Srie * Determine the parent of this explicit dependency from its 2608efb9e8b8Srie * CALLERS()'s list. 2609efb9e8b8Srie */ 2610cce0e03bSab196087 for (APLIST_TRAVERSE(CALLERS(clmp), idx1, bdp)) { 2611cce0e03bSab196087 sl.sl_imap = lmp = bdp->b_caller; 2612aa736cbeSrie if ((sym = SYMINTP(lmp)(&sl, dlmp, binfo)) != NULL) 2613efb9e8b8Srie goto found; 2614efb9e8b8Srie } 2615efb9e8b8Srie 2616efb9e8b8Srie /* 2617efb9e8b8Srie * A caller can also be defined as the parent of a dlopen() 2618efb9e8b8Srie * call. Determine whether this object has any handles. The 2619efb9e8b8Srie * dependencies maintained with the handle represent the 2620efb9e8b8Srie * explicit dependencies of the dlopen()'ed object, and the 2621efb9e8b8Srie * calling parent. 2622efb9e8b8Srie */ 2623cce0e03bSab196087 for (APLIST_TRAVERSE(HANDLES(clmp), idx1, ghp)) { 2624efb9e8b8Srie Grp_desc *gdp; 2625cce0e03bSab196087 Aliste idx2; 2626efb9e8b8Srie 2627cce0e03bSab196087 for (ALIST_TRAVERSE(ghp->gh_depends, idx2, gdp)) { 2628efb9e8b8Srie if ((gdp->gd_flags & GPD_PARENT) == 0) 2629efb9e8b8Srie continue; 2630efb9e8b8Srie sl.sl_imap = lmp = gdp->gd_depend; 2631aa736cbeSrie if ((sym = SYMINTP(lmp)(&sl, dlmp, 2632aa736cbeSrie binfo)) != NULL) 2633efb9e8b8Srie goto found; 2634efb9e8b8Srie } 26357c478bd9Sstevel@tonic-gate } 26367c478bd9Sstevel@tonic-gate } else { 26377c478bd9Sstevel@tonic-gate /* 26387c478bd9Sstevel@tonic-gate * If we need to direct bind to anything else look in the 26397c478bd9Sstevel@tonic-gate * link map associated with this symbol reference. 26407c478bd9Sstevel@tonic-gate */ 26417c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_SELF) 26427c478bd9Sstevel@tonic-gate sl.sl_imap = lmp = clmp; 26437c478bd9Sstevel@tonic-gate else 26447c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 26457c478bd9Sstevel@tonic-gate 26467c478bd9Sstevel@tonic-gate if (lmp) 26477c478bd9Sstevel@tonic-gate sym = SYMINTP(lmp)(&sl, dlmp, binfo); 26487c478bd9Sstevel@tonic-gate } 2649efb9e8b8Srie found: 26507c478bd9Sstevel@tonic-gate if (sym) 26517c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_DIRECT; 26527c478bd9Sstevel@tonic-gate 26537c478bd9Sstevel@tonic-gate /* 26547c478bd9Sstevel@tonic-gate * If we've bound to an object, determine whether that object can be 26557c478bd9Sstevel@tonic-gate * interposed upon for this symbol. 26567c478bd9Sstevel@tonic-gate */ 26577c478bd9Sstevel@tonic-gate if (sym && (LIST(*dlmp)->lm_head != *dlmp) && 26587c478bd9Sstevel@tonic-gate (LIST(*dlmp) == LIST(clmp))) { 26597c478bd9Sstevel@tonic-gate Sym *isym; 26607c478bd9Sstevel@tonic-gate 26617c478bd9Sstevel@tonic-gate if ((isym = lookup_sym_interpose(slp, dlmp, binfo, 26627c478bd9Sstevel@tonic-gate LIST(*dlmp), sym)) != 0) 26637c478bd9Sstevel@tonic-gate return (isym); 26647c478bd9Sstevel@tonic-gate } 26657c478bd9Sstevel@tonic-gate 26667c478bd9Sstevel@tonic-gate return (sym); 26677c478bd9Sstevel@tonic-gate } 26687c478bd9Sstevel@tonic-gate 26697c478bd9Sstevel@tonic-gate static Sym * 267060758829Srie core_lookup_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo, 26717c478bd9Sstevel@tonic-gate Aliste off) 26727c478bd9Sstevel@tonic-gate { 26737c478bd9Sstevel@tonic-gate Rt_map *lmp; 26747c478bd9Sstevel@tonic-gate 26757c478bd9Sstevel@tonic-gate /* 26767c478bd9Sstevel@tonic-gate * Copy relocations should start their search after the head of the 26777c478bd9Sstevel@tonic-gate * main link-map control list. 26787c478bd9Sstevel@tonic-gate */ 2679cce0e03bSab196087 if ((off == ALIST_OFF_DATA) && (slp->sl_flags & LKUP_COPY) && ilmp) 26807c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(ilmp); 26817c478bd9Sstevel@tonic-gate else 26827c478bd9Sstevel@tonic-gate lmp = ilmp; 26837c478bd9Sstevel@tonic-gate 26847c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 268560758829Srie if (callable(slp->sl_cmap, lmp, 0, slp->sl_flags)) { 26867c478bd9Sstevel@tonic-gate Sym *sym; 26877c478bd9Sstevel@tonic-gate 26887c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 2689aa736cbeSrie if (((sym = SYMINTP(lmp)(slp, dlmp, binfo)) != NULL) || 269060758829Srie (*binfo & BINFO_REJSINGLE)) 26917c478bd9Sstevel@tonic-gate return (sym); 26927c478bd9Sstevel@tonic-gate } 26937c478bd9Sstevel@tonic-gate } 26947c478bd9Sstevel@tonic-gate return (0); 26957c478bd9Sstevel@tonic-gate } 26967c478bd9Sstevel@tonic-gate 26977c478bd9Sstevel@tonic-gate static Sym * 26987c478bd9Sstevel@tonic-gate _lazy_find_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo) 26997c478bd9Sstevel@tonic-gate { 27007c478bd9Sstevel@tonic-gate Rt_map *lmp; 27017c478bd9Sstevel@tonic-gate 27027c478bd9Sstevel@tonic-gate for (lmp = ilmp; lmp; lmp = (Rt_map *)NEXT(lmp)) { 27037c478bd9Sstevel@tonic-gate if (LAZY(lmp) == 0) 27047c478bd9Sstevel@tonic-gate continue; 270560758829Srie if (callable(slp->sl_cmap, lmp, 0, slp->sl_flags)) { 27067c478bd9Sstevel@tonic-gate Sym *sym; 27077c478bd9Sstevel@tonic-gate 27087c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 27097c478bd9Sstevel@tonic-gate if ((sym = elf_lazy_find_sym(slp, dlmp, binfo)) != 0) 27107c478bd9Sstevel@tonic-gate return (sym); 27117c478bd9Sstevel@tonic-gate } 27127c478bd9Sstevel@tonic-gate } 27137c478bd9Sstevel@tonic-gate return (0); 27147c478bd9Sstevel@tonic-gate } 27157c478bd9Sstevel@tonic-gate 271660758829Srie static Sym * 271760758829Srie _lookup_sym(Slookup *slp, Rt_map **dlmp, uint_t *binfo) 27187c478bd9Sstevel@tonic-gate { 27197c478bd9Sstevel@tonic-gate const char *name = slp->sl_name; 27207c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 2721dae2dfb7Srie Lm_list *lml = LIST(clmp); 27227c478bd9Sstevel@tonic-gate Rt_map *ilmp = slp->sl_imap, *lmp; 27237c478bd9Sstevel@tonic-gate ulong_t rsymndx; 272460758829Srie Sym *sym; 27257c478bd9Sstevel@tonic-gate Syminfo *sip; 27267c478bd9Sstevel@tonic-gate Slookup sl; 27277c478bd9Sstevel@tonic-gate 27287c478bd9Sstevel@tonic-gate /* 27297c478bd9Sstevel@tonic-gate * Search the initial link map for the required symbol (this category is 27307c478bd9Sstevel@tonic-gate * selected by dlsym(), where individual link maps are searched for a 27317c478bd9Sstevel@tonic-gate * required symbol. Therefore, we know we have permission to look at 27327c478bd9Sstevel@tonic-gate * the link map). 27337c478bd9Sstevel@tonic-gate */ 273460758829Srie if (slp->sl_flags & LKUP_FIRST) 27357c478bd9Sstevel@tonic-gate return (SYMINTP(ilmp)(slp, dlmp, binfo)); 27367c478bd9Sstevel@tonic-gate 27377c478bd9Sstevel@tonic-gate /* 27387c478bd9Sstevel@tonic-gate * Determine whether this lookup can be satisfied by an objects direct, 27397c478bd9Sstevel@tonic-gate * or lazy binding information. This is triggered by a relocation from 27407c478bd9Sstevel@tonic-gate * the object (hence rsymndx is set). 27417c478bd9Sstevel@tonic-gate */ 27427c478bd9Sstevel@tonic-gate if (((rsymndx = slp->sl_rsymndx) != 0) && 2743aa736cbeSrie ((sip = SYMINFO(clmp)) != NULL)) { 2744dae2dfb7Srie uint_t bound; 2745dae2dfb7Srie 27467c478bd9Sstevel@tonic-gate /* 27477c478bd9Sstevel@tonic-gate * Find the corresponding Syminfo entry for the original 27487c478bd9Sstevel@tonic-gate * referencing symbol. 27497c478bd9Sstevel@tonic-gate */ 27507c478bd9Sstevel@tonic-gate /* LINTED */ 27517c478bd9Sstevel@tonic-gate sip = (Syminfo *)((char *)sip + (rsymndx * SYMINENT(clmp))); 2752dae2dfb7Srie bound = sip->si_boundto; 2753dae2dfb7Srie 2754dae2dfb7Srie /* 2755dae2dfb7Srie * Identify any EXTERN or PARENT references for ldd(1). 2756dae2dfb7Srie */ 2757dae2dfb7Srie if ((lml->lm_flags & LML_FLG_TRC_WARN) && 2758dae2dfb7Srie (bound > SYMINFO_BT_LOWRESERVE)) { 2759dae2dfb7Srie if (bound == SYMINFO_BT_PARENT) 2760dae2dfb7Srie *binfo |= DBG_BINFO_REF_PARENT; 2761dae2dfb7Srie if (bound == SYMINFO_BT_EXTERN) 2762dae2dfb7Srie *binfo |= DBG_BINFO_REF_EXTERN; 2763dae2dfb7Srie } 27647c478bd9Sstevel@tonic-gate 27657c478bd9Sstevel@tonic-gate /* 27667c478bd9Sstevel@tonic-gate * If the symbol information indicates a direct binding, 27677c478bd9Sstevel@tonic-gate * determine the link map that is required to satisfy the 27687c478bd9Sstevel@tonic-gate * binding. Note, if the dependency can not be found, but a 27697c478bd9Sstevel@tonic-gate * direct binding isn't required, we will still fall through 27707c478bd9Sstevel@tonic-gate * to perform any default symbol search. 27717c478bd9Sstevel@tonic-gate */ 27727c478bd9Sstevel@tonic-gate if (sip->si_flags & SYMINFO_FLG_DIRECT) { 27737c478bd9Sstevel@tonic-gate 27747c478bd9Sstevel@tonic-gate lmp = 0; 27757c478bd9Sstevel@tonic-gate if (bound < SYMINFO_BT_LOWRESERVE) 277675e7992aSrie lmp = elf_lazy_load(clmp, slp, bound, name); 27777c478bd9Sstevel@tonic-gate 27787c478bd9Sstevel@tonic-gate /* 27797c478bd9Sstevel@tonic-gate * If direct bindings have been disabled, and this isn't 27807c478bd9Sstevel@tonic-gate * a translator, skip any direct binding now that we've 278160758829Srie * ensured the resolving object has been loaded. 27827c478bd9Sstevel@tonic-gate * 27837c478bd9Sstevel@tonic-gate * If we need to direct bind to anything, we look in 27847c478bd9Sstevel@tonic-gate * ourselves, our parent, or in the link map we've just 27857c478bd9Sstevel@tonic-gate * loaded. Otherwise, even though we may have lazily 27867c478bd9Sstevel@tonic-gate * loaded an object we still continue to search for 27877c478bd9Sstevel@tonic-gate * symbols from the head of the link map list. 27887c478bd9Sstevel@tonic-gate */ 27897c478bd9Sstevel@tonic-gate if (((FLAGS(clmp) & FLG_RT_TRANS) || 2790dae2dfb7Srie (((lml->lm_tflags & LML_TFLG_NODIRECT) == 0) && 2791dae2dfb7Srie ((slp->sl_flags & LKUP_SINGLETON) == 0))) && 27929a411307Srie ((FLAGS1(clmp) & FL1_RT_DIRECT) || 27937c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_DIRECTBIND))) { 27947c478bd9Sstevel@tonic-gate sym = lookup_sym_direct(slp, dlmp, binfo, 27957c478bd9Sstevel@tonic-gate sip, lmp); 27967c478bd9Sstevel@tonic-gate 27977c478bd9Sstevel@tonic-gate /* 279860758829Srie * Determine whether this direct binding has 279960758829Srie * been rejected. If we've bound to a singleton 280060758829Srie * without following a singleton search, then 280160758829Srie * return. The caller detects this condition 280260758829Srie * and will trigger a new singleton search. 280360758829Srie * 280460758829Srie * For any other rejection (such as binding to 280560758829Srie * a symbol labeled as nodirect - presumably 280660758829Srie * because the symbol definition has been 280760758829Srie * changed since the referring object was last 280860758829Srie * built), fall through to a standard symbol 28097c478bd9Sstevel@tonic-gate * search. 28107c478bd9Sstevel@tonic-gate */ 281160758829Srie if (((*binfo & BINFO_REJECTED) == 0) || 281260758829Srie (*binfo & BINFO_REJSINGLE)) 28137c478bd9Sstevel@tonic-gate return (sym); 281460758829Srie 281560758829Srie *binfo &= ~BINFO_REJECTED; 28167c478bd9Sstevel@tonic-gate } 28177c478bd9Sstevel@tonic-gate } 28187c478bd9Sstevel@tonic-gate } 28197c478bd9Sstevel@tonic-gate 282060758829Srie /* 282160758829Srie * Duplicate the lookup information, as we'll need to modify this 282260758829Srie * information for some of the following searches. 282360758829Srie */ 28247c478bd9Sstevel@tonic-gate sl = *slp; 28257c478bd9Sstevel@tonic-gate 28267c478bd9Sstevel@tonic-gate /* 28277c478bd9Sstevel@tonic-gate * If the referencing object has the DF_SYMBOLIC flag set, look in the 28287c478bd9Sstevel@tonic-gate * referencing object for the symbol first. Failing that, fall back to 28297c478bd9Sstevel@tonic-gate * our generic search. 28307c478bd9Sstevel@tonic-gate */ 283160758829Srie if ((FLAGS1(clmp) & FL1_RT_SYMBOLIC) && 283260758829Srie ((sl.sl_flags & LKUP_SINGLETON) == 0)) { 28337c478bd9Sstevel@tonic-gate sl.sl_imap = clmp; 28349a411307Srie if (sym = SYMINTP(clmp)(&sl, dlmp, binfo)) { 28359a411307Srie ulong_t dsymndx = (((ulong_t)sym - 28369a411307Srie (ulong_t)SYMTAB(*dlmp)) / SYMENT(*dlmp)); 28379a411307Srie 28389a411307Srie /* 28399a411307Srie * Make sure this symbol hasn't explicitly been defined 28409a411307Srie * as nodirect. 28419a411307Srie */ 28429a411307Srie if (((sip = SYMINFO(*dlmp)) == 0) || 28439a411307Srie /* LINTED */ 28449a411307Srie ((sip = (Syminfo *)((char *)sip + 28459a411307Srie (dsymndx * SYMINENT(*dlmp)))) == 0) || 28469a411307Srie ((sip->si_flags & SYMINFO_FLG_NOEXTDIRECT) == 0)) 28477c478bd9Sstevel@tonic-gate return (sym); 28487c478bd9Sstevel@tonic-gate } 28499a411307Srie } 28507c478bd9Sstevel@tonic-gate 285160758829Srie sl.sl_flags |= LKUP_STANDARD; 285260758829Srie 28537c478bd9Sstevel@tonic-gate /* 28547c478bd9Sstevel@tonic-gate * If this lookup originates from a standard relocation, then traverse 285560758829Srie * all link-map control lists, inspecting any object that is available 285660758829Srie * to this caller. Otherwise, traverse the link-map control list 285760758829Srie * associated with the caller. 28587c478bd9Sstevel@tonic-gate */ 285960758829Srie if (sl.sl_flags & LKUP_STDRELOC) { 28607c478bd9Sstevel@tonic-gate Aliste off; 28617c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 28627c478bd9Sstevel@tonic-gate 286360758829Srie sym = NULL; 28647c478bd9Sstevel@tonic-gate 2865dae2dfb7Srie for (ALIST_TRAVERSE_BY_OFFSET(lml->lm_lists, off, lmc)) { 286660758829Srie if (((sym = core_lookup_sym(lmc->lc_head, &sl, dlmp, 286760758829Srie binfo, off)) != NULL) || 286860758829Srie (*binfo & BINFO_REJSINGLE)) 28697c478bd9Sstevel@tonic-gate break; 28707c478bd9Sstevel@tonic-gate } 28717c478bd9Sstevel@tonic-gate } else 2872cce0e03bSab196087 sym = core_lookup_sym(ilmp, &sl, dlmp, binfo, ALIST_OFF_DATA); 287360758829Srie 287460758829Srie /* 287560758829Srie * If a symbol binding was rejected, because a binding occurred to a 287660758829Srie * singleton without following the default symbol search, return so 287760758829Srie * that the search can be repreated. 287860758829Srie */ 287960758829Srie if (*binfo & BINFO_REJSINGLE) 288060758829Srie return (sym); 28817c478bd9Sstevel@tonic-gate 28827c478bd9Sstevel@tonic-gate /* 28837c478bd9Sstevel@tonic-gate * To allow transitioning into a world of lazy loading dependencies see 28847c478bd9Sstevel@tonic-gate * if this link map contains objects that have lazy dependencies still 28857c478bd9Sstevel@tonic-gate * outstanding. If so, and we haven't been able to locate a non-weak 28867c478bd9Sstevel@tonic-gate * symbol reference, start bringing in any lazy dependencies to see if 28877c478bd9Sstevel@tonic-gate * the reference can be satisfied. Use of dlsym(RTLD_PROBE) sets the 288875e7992aSrie * LKUP_NOFALLBACK flag, and this flag disables this fall back. 28897c478bd9Sstevel@tonic-gate */ 289075e7992aSrie if ((sym == NULL) && ((sl.sl_flags & LKUP_NOFALLBACK) == 0)) { 28917c478bd9Sstevel@tonic-gate if ((lmp = ilmp) == 0) 28927c478bd9Sstevel@tonic-gate lmp = LIST(clmp)->lm_head; 289375e7992aSrie 2894dae2dfb7Srie lml = LIST(lmp); 2895dae2dfb7Srie if ((sl.sl_flags & LKUP_WEAK) || (lml->lm_lazy == 0)) 28967c478bd9Sstevel@tonic-gate return ((Sym *)0); 28977c478bd9Sstevel@tonic-gate 2898dae2dfb7Srie DBG_CALL(Dbg_syms_lazy_rescan(lml, name)); 28997c478bd9Sstevel@tonic-gate 29007c478bd9Sstevel@tonic-gate /* 29017c478bd9Sstevel@tonic-gate * If this request originated from a dlsym(RTLD_NEXT) then start 29027c478bd9Sstevel@tonic-gate * looking for dependencies from the caller, otherwise use the 29037c478bd9Sstevel@tonic-gate * initial link-map. 29047c478bd9Sstevel@tonic-gate */ 290560758829Srie if (sl.sl_flags & LKUP_NEXT) 29067c478bd9Sstevel@tonic-gate sym = _lazy_find_sym(clmp, &sl, dlmp, binfo); 29077c478bd9Sstevel@tonic-gate else { 2908cce0e03bSab196087 Aliste idx; 29097c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 29107c478bd9Sstevel@tonic-gate 2911dae2dfb7Srie for (ALIST_TRAVERSE(lml->lm_lists, idx, lmc)) { 291275e7992aSrie sl.sl_flags |= LKUP_NOFALLBACK; 29137c478bd9Sstevel@tonic-gate if ((sym = _lazy_find_sym(lmc->lc_head, &sl, 29147c478bd9Sstevel@tonic-gate dlmp, binfo)) != 0) 29157c478bd9Sstevel@tonic-gate break; 29167c478bd9Sstevel@tonic-gate } 29177c478bd9Sstevel@tonic-gate } 29187c478bd9Sstevel@tonic-gate } 291960758829Srie return (sym); 292060758829Srie } 292160758829Srie 292260758829Srie /* 292360758829Srie * Symbol lookup routine. Takes an ELF symbol name, and a list of link maps to 292460758829Srie * search. If successful, return a pointer to the symbol table entry, a 292560758829Srie * pointer to the link map of the enclosing object, and information relating 292660758829Srie * to the type of binding. Else return a null pointer. 292760758829Srie * 292860758829Srie * To improve elf performance, we first compute the elf hash value and pass 292960758829Srie * it to each find_sym() routine. The elf function will use this value to 293060758829Srie * locate the symbol, the a.out function will simply ignore it. 293160758829Srie */ 293260758829Srie Sym * 293360758829Srie lookup_sym(Slookup *slp, Rt_map **dlmp, uint_t *binfo) 293460758829Srie { 293560758829Srie Rt_map *clmp = slp->sl_cmap; 293660758829Srie Sym *rsym = slp->sl_rsym, *sym = 0; 293760758829Srie uchar_t rtype = slp->sl_rtype; 293860758829Srie 293960758829Srie if (slp->sl_hash == 0) 294075e7992aSrie slp->sl_hash = elf_hash(slp->sl_name); 294160758829Srie *binfo = 0; 294260758829Srie 294360758829Srie /* 294460758829Srie * Establish any state that might be associated with a symbol reference. 294560758829Srie */ 294660758829Srie if (rsym) { 294760758829Srie if ((slp->sl_flags & LKUP_STDRELOC) && 294860758829Srie (ELF_ST_BIND(rsym->st_info) == STB_WEAK)) 294960758829Srie slp->sl_flags |= LKUP_WEAK; 295060758829Srie 295160758829Srie if (ELF_ST_VISIBILITY(rsym->st_other) == STV_SINGLETON) 295260758829Srie slp->sl_flags |= LKUP_SINGLETON; 295360758829Srie } 295460758829Srie 295560758829Srie /* 295660758829Srie * Establish any lookup state required for this type of relocation. 295760758829Srie */ 295860758829Srie if ((slp->sl_flags & LKUP_STDRELOC) && rtype) { 295960758829Srie if (rtype == M_R_COPY) 296060758829Srie slp->sl_flags |= LKUP_COPY; 296160758829Srie 296260758829Srie if (rtype != M_R_JMP_SLOT) 296360758829Srie slp->sl_flags |= LKUP_SPEC; 296460758829Srie } 296560758829Srie 296660758829Srie /* 296760758829Srie * Under ldd -w, any unresolved weak references are diagnosed. Set the 296860758829Srie * symbol binding as global to trigger a relocation error if the symbol 296960758829Srie * can not be found. 297060758829Srie */ 297160758829Srie if (rsym) { 297260758829Srie if (LIST(slp->sl_cmap)->lm_flags & LML_FLG_TRC_NOUNRESWEAK) 297360758829Srie slp->sl_bind = STB_GLOBAL; 297460758829Srie else if ((slp->sl_bind = ELF_ST_BIND(rsym->st_info)) == 297560758829Srie STB_WEAK) 297660758829Srie slp->sl_flags |= LKUP_WEAK; 297760758829Srie } 297860758829Srie 297960758829Srie /* 298060758829Srie * Carry out an initial symbol search. This search takes into account 298160758829Srie * all the modes of the requested search. 298260758829Srie */ 298360758829Srie if (((sym = _lookup_sym(slp, dlmp, binfo)) == NULL) && 298460758829Srie (*binfo & BINFO_REJSINGLE)) { 298560758829Srie Slookup sl = *slp; 298660758829Srie 298760758829Srie /* 298860758829Srie * If a binding has been rejected because of binding to a 298960758829Srie * singleton without going through a singleton search, then 299060758829Srie * reset the lookup data, and try again. 299160758829Srie */ 299260758829Srie sl.sl_imap = LIST(sl.sl_cmap)->lm_head; 299360758829Srie sl.sl_flags &= ~(LKUP_FIRST | LKUP_SELF | LKUP_NEXT); 299460758829Srie sl.sl_flags |= LKUP_SINGLETON; 299560758829Srie sl.sl_rsymndx = 0; 299660758829Srie *binfo &= ~BINFO_REJECTED; 299760758829Srie sym = _lookup_sym(&sl, dlmp, binfo); 299860758829Srie } 29997c478bd9Sstevel@tonic-gate 30007c478bd9Sstevel@tonic-gate /* 30017c478bd9Sstevel@tonic-gate * If the caller is restricted to a symbol search within its group, 30027c478bd9Sstevel@tonic-gate * determine if it is necessary to follow a binding from outside of 30037c478bd9Sstevel@tonic-gate * the group. 30047c478bd9Sstevel@tonic-gate */ 30057c478bd9Sstevel@tonic-gate if (sym && ((MODE(clmp) & (RTLD_GROUP | RTLD_WORLD)) == RTLD_GROUP)) { 30067c478bd9Sstevel@tonic-gate Sym *isym; 30077c478bd9Sstevel@tonic-gate 30087c478bd9Sstevel@tonic-gate if ((isym = lookup_sym_interpose(slp, dlmp, binfo, LIST(*dlmp), 30097c478bd9Sstevel@tonic-gate sym)) != 0) 30107c478bd9Sstevel@tonic-gate return (isym); 30117c478bd9Sstevel@tonic-gate } 30127c478bd9Sstevel@tonic-gate return (sym); 30137c478bd9Sstevel@tonic-gate } 30147c478bd9Sstevel@tonic-gate 30157c478bd9Sstevel@tonic-gate /* 30167c478bd9Sstevel@tonic-gate * Associate a binding descriptor with a caller and its dependency, or update 30177c478bd9Sstevel@tonic-gate * an existing descriptor. 30187c478bd9Sstevel@tonic-gate */ 30197c478bd9Sstevel@tonic-gate int 30207c478bd9Sstevel@tonic-gate bind_one(Rt_map *clmp, Rt_map *dlmp, uint_t flags) 30217c478bd9Sstevel@tonic-gate { 3022cce0e03bSab196087 Bnd_desc *bdp; 3023cce0e03bSab196087 Aliste idx; 30247c478bd9Sstevel@tonic-gate int found = ALE_CREATE; 30257c478bd9Sstevel@tonic-gate 30267c478bd9Sstevel@tonic-gate /* 30277c478bd9Sstevel@tonic-gate * Determine whether a binding descriptor already exists between the 30287c478bd9Sstevel@tonic-gate * two objects. 30297c478bd9Sstevel@tonic-gate */ 3030cce0e03bSab196087 for (APLIST_TRAVERSE(DEPENDS(clmp), idx, bdp)) { 30317c478bd9Sstevel@tonic-gate if (bdp->b_depend == dlmp) { 30327c478bd9Sstevel@tonic-gate found = ALE_EXISTS; 30337c478bd9Sstevel@tonic-gate break; 30347c478bd9Sstevel@tonic-gate } 30357c478bd9Sstevel@tonic-gate } 30367c478bd9Sstevel@tonic-gate 30377c478bd9Sstevel@tonic-gate if (found == ALE_CREATE) { 30387c478bd9Sstevel@tonic-gate /* 30397c478bd9Sstevel@tonic-gate * Create a new binding descriptor. 30407c478bd9Sstevel@tonic-gate */ 30417c478bd9Sstevel@tonic-gate if ((bdp = malloc(sizeof (Bnd_desc))) == 0) 30427c478bd9Sstevel@tonic-gate return (0); 30437c478bd9Sstevel@tonic-gate 30447c478bd9Sstevel@tonic-gate bdp->b_caller = clmp; 30457c478bd9Sstevel@tonic-gate bdp->b_depend = dlmp; 30467c478bd9Sstevel@tonic-gate bdp->b_flags = 0; 30477c478bd9Sstevel@tonic-gate 30487c478bd9Sstevel@tonic-gate /* 30497c478bd9Sstevel@tonic-gate * Append the binding descriptor to the caller and the 30507c478bd9Sstevel@tonic-gate * dependency. 30517c478bd9Sstevel@tonic-gate */ 3052cce0e03bSab196087 if (aplist_append(&DEPENDS(clmp), bdp, AL_CNT_DEPENDS) == 0) 30537c478bd9Sstevel@tonic-gate return (0); 30547c478bd9Sstevel@tonic-gate 3055cce0e03bSab196087 if (aplist_append(&CALLERS(dlmp), bdp, AL_CNT_CALLERS) == 0) 30567c478bd9Sstevel@tonic-gate return (0); 30577c478bd9Sstevel@tonic-gate } 30587c478bd9Sstevel@tonic-gate 30597c478bd9Sstevel@tonic-gate if ((found == ALE_CREATE) || ((bdp->b_flags & flags) != flags)) { 30607c478bd9Sstevel@tonic-gate bdp->b_flags |= flags; 30617c478bd9Sstevel@tonic-gate 30627c478bd9Sstevel@tonic-gate if (flags & BND_REFER) 30637c478bd9Sstevel@tonic-gate FLAGS1(dlmp) |= FL1_RT_USED; 30647c478bd9Sstevel@tonic-gate 30655aefb655Srie DBG_CALL(Dbg_file_bind_entry(LIST(clmp), bdp)); 30667c478bd9Sstevel@tonic-gate } 30677c478bd9Sstevel@tonic-gate return (found); 30687c478bd9Sstevel@tonic-gate } 30697c478bd9Sstevel@tonic-gate 30707c478bd9Sstevel@tonic-gate /* 30717c478bd9Sstevel@tonic-gate * Cleanup after relocation processing. 30727c478bd9Sstevel@tonic-gate */ 30737c478bd9Sstevel@tonic-gate int 3074cce0e03bSab196087 relocate_finish(Rt_map *lmp, APlist *bound, int textrel, int ret) 30757c478bd9Sstevel@tonic-gate { 30765aefb655Srie DBG_CALL(Dbg_reloc_run(lmp, 0, ret, DBG_REL_FINISH)); 30777c478bd9Sstevel@tonic-gate 30787c478bd9Sstevel@tonic-gate /* 30797c478bd9Sstevel@tonic-gate * Establish bindings to all objects that have been bound to. 30807c478bd9Sstevel@tonic-gate */ 30817c478bd9Sstevel@tonic-gate if (bound) { 3082cce0e03bSab196087 Aliste idx; 3083cce0e03bSab196087 Rt_map *_lmp; 3084*8a20d9f8Srie Word used; 30857c478bd9Sstevel@tonic-gate 3086*8a20d9f8Srie /* 3087*8a20d9f8Srie * Only create bindings if the callers relocation was 3088*8a20d9f8Srie * successful (ret != 0), otherwise the object will eventually 3089*8a20d9f8Srie * be torn down. Create these bindings if running under ldd(1) 3090*8a20d9f8Srie * with the -U/-u options regardless of relocation errors, as 3091*8a20d9f8Srie * the unused processing needs to traverse these bindings to 3092*8a20d9f8Srie * diagnose unused objects. 3093*8a20d9f8Srie */ 3094*8a20d9f8Srie used = LIST(lmp)->lm_flags & 3095*8a20d9f8Srie (LML_FLG_TRC_UNREF | LML_FLG_TRC_UNUSED); 3096*8a20d9f8Srie 3097*8a20d9f8Srie if (ret || used) { 3098cce0e03bSab196087 for (APLIST_TRAVERSE(bound, idx, _lmp)) { 3099*8a20d9f8Srie if (bind_one(lmp, _lmp, BND_REFER) || used) 3100*8a20d9f8Srie continue; 3101*8a20d9f8Srie 31027c478bd9Sstevel@tonic-gate ret = 0; 31037c478bd9Sstevel@tonic-gate break; 31047c478bd9Sstevel@tonic-gate } 31057c478bd9Sstevel@tonic-gate } 31067c478bd9Sstevel@tonic-gate free(bound); 31077c478bd9Sstevel@tonic-gate } 31087c478bd9Sstevel@tonic-gate 31097c478bd9Sstevel@tonic-gate /* 31107c478bd9Sstevel@tonic-gate * If we write enabled the text segment to perform these relocations 31117c478bd9Sstevel@tonic-gate * re-protect by disabling writes. 31127c478bd9Sstevel@tonic-gate */ 31137c478bd9Sstevel@tonic-gate if (textrel) 31147c478bd9Sstevel@tonic-gate (void) LM_SET_PROT(lmp)(lmp, 0); 31157c478bd9Sstevel@tonic-gate 31167c478bd9Sstevel@tonic-gate return (ret); 31177c478bd9Sstevel@tonic-gate } 3118