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 * 269a411307Srie * Copyright 2007 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 757c478bd9Sstevel@tonic-gate sl.sl_name = 0; 767c478bd9Sstevel@tonic-gate sl.sl_hash = 0; 777c478bd9Sstevel@tonic-gate sl.sl_imap = sl.sl_cmap = lmp; 787c478bd9Sstevel@tonic-gate 797c478bd9Sstevel@tonic-gate for (cnt = 0; cnt < max; cnt++, dip++) { 807c478bd9Sstevel@tonic-gate if (((dip->di_flags & MSK_DI_FILTER) == 0) || 817c478bd9Sstevel@tonic-gate ((dip->di_flags & FLG_DI_AUXFLTR) && 827c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_NOAUXFLTR))) 837c478bd9Sstevel@tonic-gate continue; 847c478bd9Sstevel@tonic-gate (void) elf_lookup_filtee(&sl, 0, 0, cnt); 857c478bd9Sstevel@tonic-gate } 867c478bd9Sstevel@tonic-gate } 877c478bd9Sstevel@tonic-gate } 887c478bd9Sstevel@tonic-gate 897c478bd9Sstevel@tonic-gate /* 907c478bd9Sstevel@tonic-gate * Analyze one or more link-maps of a link map control list. This routine is 917c478bd9Sstevel@tonic-gate * called at startup to continue the processing of the main executable. It is 927c478bd9Sstevel@tonic-gate * also called each time a new set of objects are loaded, ie. from filters, 937c478bd9Sstevel@tonic-gate * lazy-loaded objects, or dlopen(). 947c478bd9Sstevel@tonic-gate * 957c478bd9Sstevel@tonic-gate * In each instance we traverse the link-map control list starting with the 967c478bd9Sstevel@tonic-gate * initial object. As dependencies are analyzed they are added to the link-map 977c478bd9Sstevel@tonic-gate * control list. Thus the list grows as we traverse it - this results in the 987c478bd9Sstevel@tonic-gate * breadth first ordering of all needed objects. 997c478bd9Sstevel@tonic-gate */ 1007c478bd9Sstevel@tonic-gate int 1017c478bd9Sstevel@tonic-gate analyze_lmc(Lm_list *lml, Aliste nlmco, Rt_map *nlmp) 1027c478bd9Sstevel@tonic-gate { 1037c478bd9Sstevel@tonic-gate Rt_map *lmp = nlmp; 1047c478bd9Sstevel@tonic-gate Lm_cntl *nlmc; 1057c478bd9Sstevel@tonic-gate int ret = 1; 1067c478bd9Sstevel@tonic-gate 1077c478bd9Sstevel@tonic-gate /* 1087c478bd9Sstevel@tonic-gate * If this link-map control list is being analyzed, return. The object 1097c478bd9Sstevel@tonic-gate * that has just been added will be picked up by the existing analysis 1107c478bd9Sstevel@tonic-gate * thread. Note, this is only really meaningful during process init- 1117c478bd9Sstevel@tonic-gate * ialization, as objects are added to the main link-map control list. 1127c478bd9Sstevel@tonic-gate * Following this initialization, each family of objects that are loaded 1137c478bd9Sstevel@tonic-gate * are added to a new link-map control list. 1147c478bd9Sstevel@tonic-gate */ 1157c478bd9Sstevel@tonic-gate /* LINTED */ 1167c478bd9Sstevel@tonic-gate nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 1177c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_ANALYZING) 1187c478bd9Sstevel@tonic-gate return (1); 1197c478bd9Sstevel@tonic-gate 1207c478bd9Sstevel@tonic-gate /* 1217c478bd9Sstevel@tonic-gate * If this object doesn't belong to the present link-map control list 1227c478bd9Sstevel@tonic-gate * then it must already have been analyzed, or it is in the process of 1237c478bd9Sstevel@tonic-gate * being analyzed prior to us recursing into this analysis. In either 1247c478bd9Sstevel@tonic-gate * case, ignore the object as it's already being taken care of. 1257c478bd9Sstevel@tonic-gate */ 1267c478bd9Sstevel@tonic-gate if (nlmco != CNTL(nlmp)) 1277c478bd9Sstevel@tonic-gate return (1); 1287c478bd9Sstevel@tonic-gate 1297c478bd9Sstevel@tonic-gate nlmc->lc_flags |= LMC_FLG_ANALYZING; 1307c478bd9Sstevel@tonic-gate 1317c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 1327c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & 1337c478bd9Sstevel@tonic-gate (FLG_RT_ANALZING | FLG_RT_ANALYZED | FLG_RT_DELETE)) 1347c478bd9Sstevel@tonic-gate continue; 1357c478bd9Sstevel@tonic-gate 1367c478bd9Sstevel@tonic-gate /* 1377c478bd9Sstevel@tonic-gate * Indicate that analyzing is under way. 1387c478bd9Sstevel@tonic-gate */ 1397c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_ANALZING; 1407c478bd9Sstevel@tonic-gate 1417c478bd9Sstevel@tonic-gate /* 1427c478bd9Sstevel@tonic-gate * If this link map represents a relocatable object, then we 1437c478bd9Sstevel@tonic-gate * need to finish the link-editing of the object at this point. 1447c478bd9Sstevel@tonic-gate */ 1457c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_OBJECT) { 1467c478bd9Sstevel@tonic-gate if (elf_obj_fini(lml, lmp) == 0) { 1477c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) 1487c478bd9Sstevel@tonic-gate continue; 1497c478bd9Sstevel@tonic-gate ret = 0; 1507c478bd9Sstevel@tonic-gate break; 1517c478bd9Sstevel@tonic-gate } 1527c478bd9Sstevel@tonic-gate } 1537c478bd9Sstevel@tonic-gate 1547c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_analyze(lmp)); 1557c478bd9Sstevel@tonic-gate 1567c478bd9Sstevel@tonic-gate /* 1577c478bd9Sstevel@tonic-gate * Establish any dependencies this object requires. 1587c478bd9Sstevel@tonic-gate */ 1597c478bd9Sstevel@tonic-gate if (LM_NEEDED(lmp)(lml, nlmco, lmp) == 0) { 1607c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) 1617c478bd9Sstevel@tonic-gate continue; 1627c478bd9Sstevel@tonic-gate ret = 0; 1637c478bd9Sstevel@tonic-gate break; 1647c478bd9Sstevel@tonic-gate } 1657c478bd9Sstevel@tonic-gate 1667c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_ANALZING; 1677c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_ANALYZED; 1687c478bd9Sstevel@tonic-gate 1697c478bd9Sstevel@tonic-gate /* 1707c478bd9Sstevel@tonic-gate * If we're building a configuration file, determine if this 1717c478bd9Sstevel@tonic-gate * object is a filter and if so load its filtees. This 1727c478bd9Sstevel@tonic-gate * traversal is only necessary for crle(1), as typical use of 1737c478bd9Sstevel@tonic-gate * an object will load filters as part of relocation processing. 1747c478bd9Sstevel@tonic-gate */ 1757c478bd9Sstevel@tonic-gate if (MODE(nlmp) & RTLD_CONFGEN) 1767c478bd9Sstevel@tonic-gate load_filtees(lmp); 1777c478bd9Sstevel@tonic-gate 1787c478bd9Sstevel@tonic-gate /* 1797c478bd9Sstevel@tonic-gate * If an interposer has been added, it will have been inserted 1807c478bd9Sstevel@tonic-gate * in the link-map before the link we're presently analyzing. 1817c478bd9Sstevel@tonic-gate * Break out of this analysis loop and return to the head of 1827c478bd9Sstevel@tonic-gate * the link-map control list to analyze the interposer. Note 1837c478bd9Sstevel@tonic-gate * that this rescan preserves the breadth first loading of 1847c478bd9Sstevel@tonic-gate * dependencies. 1857c478bd9Sstevel@tonic-gate */ 18624a6229eSrie /* LINTED */ 18724a6229eSrie nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 1887c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_REANALYZE) { 1897c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_REANALYZE; 1907c478bd9Sstevel@tonic-gate lmp = nlmc->lc_head; 1917c478bd9Sstevel@tonic-gate } 1927c478bd9Sstevel@tonic-gate } 1937c478bd9Sstevel@tonic-gate 19424a6229eSrie /* LINTED */ 19524a6229eSrie nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 1967c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_ANALYZING; 1977c478bd9Sstevel@tonic-gate 1987c478bd9Sstevel@tonic-gate return (ret); 1997c478bd9Sstevel@tonic-gate } 2007c478bd9Sstevel@tonic-gate 2017c478bd9Sstevel@tonic-gate /* 2027c478bd9Sstevel@tonic-gate * Copy relocation test. If the symbol definition is within .bss, then it's 2037c478bd9Sstevel@tonic-gate * zero filled, and as the destination is within .bss, we can skip copying 2047c478bd9Sstevel@tonic-gate * zero's to zero's. However, if the destination object has a MOVE table, it's 2057c478bd9Sstevel@tonic-gate * .bss might contain non-zero data, in which case copy it regardless. 2067c478bd9Sstevel@tonic-gate */ 2077c478bd9Sstevel@tonic-gate static int 2087c478bd9Sstevel@tonic-gate copy_zerobits(Rt_map *dlmp, Sym *dsym) 2097c478bd9Sstevel@tonic-gate { 2107c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & FLG_RT_MOVE) == 0) { 2117c478bd9Sstevel@tonic-gate Mmap *mmaps; 2127c478bd9Sstevel@tonic-gate caddr_t daddr = (caddr_t)dsym->st_value; 2137c478bd9Sstevel@tonic-gate 2147c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & FLG_RT_FIXED) == 0) 2157c478bd9Sstevel@tonic-gate daddr += ADDR(dlmp); 2167c478bd9Sstevel@tonic-gate 2177c478bd9Sstevel@tonic-gate for (mmaps = MMAPS(dlmp); mmaps->m_vaddr; mmaps++) { 2187c478bd9Sstevel@tonic-gate if ((mmaps->m_fsize != mmaps->m_msize) && 2197c478bd9Sstevel@tonic-gate (daddr >= (mmaps->m_vaddr + mmaps->m_fsize)) && 2207c478bd9Sstevel@tonic-gate (daddr < (mmaps->m_vaddr + mmaps->m_msize))) 2217c478bd9Sstevel@tonic-gate return (1); 2227c478bd9Sstevel@tonic-gate } 2237c478bd9Sstevel@tonic-gate } 2247c478bd9Sstevel@tonic-gate return (0); 2257c478bd9Sstevel@tonic-gate } 2267c478bd9Sstevel@tonic-gate 2277c478bd9Sstevel@tonic-gate /* 2287c478bd9Sstevel@tonic-gate * Relocate an individual object. 2297c478bd9Sstevel@tonic-gate */ 2307c478bd9Sstevel@tonic-gate static int 2317c478bd9Sstevel@tonic-gate relocate_so(Lm_list *lml, Rt_map *lmp, int *relocated, int now) 2327c478bd9Sstevel@tonic-gate { 2337c478bd9Sstevel@tonic-gate /* 2347c478bd9Sstevel@tonic-gate * If we're running under ldd(1), and haven't been asked to trace any 2357c478bd9Sstevel@tonic-gate * warnings, skip any actual relocation processing. 2367c478bd9Sstevel@tonic-gate */ 2377c478bd9Sstevel@tonic-gate if (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 2387c478bd9Sstevel@tonic-gate (lml->lm_flags & LML_FLG_TRC_WARN)) { 2397c478bd9Sstevel@tonic-gate 2407c478bd9Sstevel@tonic-gate if (relocated) 2417c478bd9Sstevel@tonic-gate (*relocated)++; 2427c478bd9Sstevel@tonic-gate 2437c478bd9Sstevel@tonic-gate if ((LM_RELOC(lmp)(lmp, now) == 0) && 2447c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0)) 2457c478bd9Sstevel@tonic-gate return (0); 2467c478bd9Sstevel@tonic-gate } 2477c478bd9Sstevel@tonic-gate return (1); 2487c478bd9Sstevel@tonic-gate } 2497c478bd9Sstevel@tonic-gate 2507c478bd9Sstevel@tonic-gate /* 2517c478bd9Sstevel@tonic-gate * Relocate the objects on a link-map control list. 2527c478bd9Sstevel@tonic-gate */ 2537c478bd9Sstevel@tonic-gate static int 2547c478bd9Sstevel@tonic-gate _relocate_lmc(Lm_list *lml, Rt_map *nlmp, int *relocated) 2557c478bd9Sstevel@tonic-gate { 2567c478bd9Sstevel@tonic-gate Rt_map *lmp; 2577c478bd9Sstevel@tonic-gate 2587c478bd9Sstevel@tonic-gate for (lmp = nlmp; lmp; lmp = (Rt_map *)NEXT(lmp)) { 2597c478bd9Sstevel@tonic-gate /* 2607c478bd9Sstevel@tonic-gate * If this object has already been relocated, we're done. If 2617c478bd9Sstevel@tonic-gate * this object is being deleted, skip it, there's probably a 2627c478bd9Sstevel@tonic-gate * relocation error somewhere that's causing this deletion. 2637c478bd9Sstevel@tonic-gate */ 2647c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & 2657c478bd9Sstevel@tonic-gate (FLG_RT_RELOCING | FLG_RT_RELOCED | FLG_RT_DELETE)) 2667c478bd9Sstevel@tonic-gate continue; 2677c478bd9Sstevel@tonic-gate 2687c478bd9Sstevel@tonic-gate /* 2697c478bd9Sstevel@tonic-gate * Indicate that relocation processing is under way. 2707c478bd9Sstevel@tonic-gate */ 2717c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_RELOCING; 2727c478bd9Sstevel@tonic-gate 2737c478bd9Sstevel@tonic-gate /* 2747c478bd9Sstevel@tonic-gate * Relocate the object. 2757c478bd9Sstevel@tonic-gate */ 2767c478bd9Sstevel@tonic-gate if (relocate_so(lml, lmp, relocated, 0) == 0) 2777c478bd9Sstevel@tonic-gate return (0); 2787c478bd9Sstevel@tonic-gate 2797c478bd9Sstevel@tonic-gate /* 2807c478bd9Sstevel@tonic-gate * Indicate that the objects relocation is complete. 2817c478bd9Sstevel@tonic-gate */ 2827c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_RELOCING; 2837c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_RELOCED; 2847c478bd9Sstevel@tonic-gate 2857c478bd9Sstevel@tonic-gate /* 2867c478bd9Sstevel@tonic-gate * Mark this object's init is available for harvesting. Under 2877c478bd9Sstevel@tonic-gate * ldd(1) this marking is necessary for -i (tsort) gathering. 2887c478bd9Sstevel@tonic-gate */ 2897c478bd9Sstevel@tonic-gate lml->lm_init++; 290dffec89cSrie lml->lm_flags |= LML_FLG_OBJADDED; 2917c478bd9Sstevel@tonic-gate 2927c478bd9Sstevel@tonic-gate /* 29310a4fa49Srie * Process any move data (not necessary under ldd()). 2947c478bd9Sstevel@tonic-gate */ 29510a4fa49Srie if ((FLAGS(lmp) & FLG_RT_MOVE) && 29610a4fa49Srie ((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0)) 2977c478bd9Sstevel@tonic-gate move_data(lmp); 2987c478bd9Sstevel@tonic-gate 2997c478bd9Sstevel@tonic-gate /* 3007c478bd9Sstevel@tonic-gate * Determine if this object is a filter, and if a load filter 3017c478bd9Sstevel@tonic-gate * flag is in effect, trigger the loading of all its filtees. 3027c478bd9Sstevel@tonic-gate */ 3037c478bd9Sstevel@tonic-gate load_filtees(lmp); 3047c478bd9Sstevel@tonic-gate } 3057c478bd9Sstevel@tonic-gate 3067c478bd9Sstevel@tonic-gate /* 3077c478bd9Sstevel@tonic-gate * Perform special copy relocations. These are only meaningful for 3087c478bd9Sstevel@tonic-gate * dynamic executables (fixed and head of their link-map list). If 3097c478bd9Sstevel@tonic-gate * this ever has to change then the infrastructure of COPY() has to 3107c478bd9Sstevel@tonic-gate * change as presently this element is used to capture both receiver 3117c478bd9Sstevel@tonic-gate * and supplier of copy data. 3127c478bd9Sstevel@tonic-gate */ 3137c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_FIXED) && (nlmp == LIST(nlmp)->lm_head) && 3147c478bd9Sstevel@tonic-gate (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 3157c478bd9Sstevel@tonic-gate (lml->lm_flags & LML_FLG_TRC_WARN))) { 3167c478bd9Sstevel@tonic-gate Rt_map ** lmpp; 3177c478bd9Sstevel@tonic-gate Aliste off1; 3187c478bd9Sstevel@tonic-gate Word tracing; 3197c478bd9Sstevel@tonic-gate 3207c478bd9Sstevel@tonic-gate #if defined(__sparc) || defined(__amd64) 3217c478bd9Sstevel@tonic-gate /* XX64 don't need this once the compilers are fixed */ 3227c478bd9Sstevel@tonic-gate #elif defined(i386) 3237c478bd9Sstevel@tonic-gate if (elf_copy_gen(nlmp) == 0) 3247c478bd9Sstevel@tonic-gate return (0); 3257c478bd9Sstevel@tonic-gate #endif 3267c478bd9Sstevel@tonic-gate 3277c478bd9Sstevel@tonic-gate if (COPY(nlmp) == 0) 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 3397c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(COPY(nlmp), off1, lmpp)) { 3407c478bd9Sstevel@tonic-gate Rt_map * lmp = *lmpp; 3417c478bd9Sstevel@tonic-gate Rel_copy * rcp; 3427c478bd9Sstevel@tonic-gate Aliste off2; 3437c478bd9Sstevel@tonic-gate 3447c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(COPY(lmp), off2, rcp)) { 3457c478bd9Sstevel@tonic-gate int zero; 3467c478bd9Sstevel@tonic-gate 3477c478bd9Sstevel@tonic-gate /* 3487c478bd9Sstevel@tonic-gate * Only copy the bits if it's from non-zero 3497c478bd9Sstevel@tonic-gate * filled memory. 3507c478bd9Sstevel@tonic-gate */ 3517c478bd9Sstevel@tonic-gate zero = copy_zerobits(rcp->r_dlmp, rcp->r_dsym); 3525aefb655Srie DBG_CALL(Dbg_reloc_copy(rcp->r_dlmp, nlmp, 3535aefb655Srie rcp->r_name, zero)); 3547c478bd9Sstevel@tonic-gate if (zero) 3557c478bd9Sstevel@tonic-gate continue; 3567c478bd9Sstevel@tonic-gate 3577c478bd9Sstevel@tonic-gate (void) memcpy(rcp->r_radd, rcp->r_dadd, 3587c478bd9Sstevel@tonic-gate rcp->r_size); 3597c478bd9Sstevel@tonic-gate 3607c478bd9Sstevel@tonic-gate if ((tracing == 0) || ((FLAGS1(rcp->r_dlmp) & 3617c478bd9Sstevel@tonic-gate FL1_RT_DISPREL) == 0)) 3627c478bd9Sstevel@tonic-gate continue; 3637c478bd9Sstevel@tonic-gate 3647c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_REL_CPYDISP), 3657c478bd9Sstevel@tonic-gate demangle(rcp->r_name), NAME(rcp->r_dlmp)); 3667c478bd9Sstevel@tonic-gate } 3677c478bd9Sstevel@tonic-gate } 3687c478bd9Sstevel@tonic-gate 3695aefb655Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 3707c478bd9Sstevel@tonic-gate 3717c478bd9Sstevel@tonic-gate free(COPY(nlmp)); 3727c478bd9Sstevel@tonic-gate COPY(nlmp) = 0; 3737c478bd9Sstevel@tonic-gate } 3747c478bd9Sstevel@tonic-gate return (1); 3757c478bd9Sstevel@tonic-gate } 3767c478bd9Sstevel@tonic-gate 3777c478bd9Sstevel@tonic-gate int 3787c478bd9Sstevel@tonic-gate relocate_lmc(Lm_list *lml, Aliste nlmco, Rt_map *nlmp) 3797c478bd9Sstevel@tonic-gate { 3807c478bd9Sstevel@tonic-gate int lret = 1, pret = 1; 3817c478bd9Sstevel@tonic-gate Alist *alp; 3827c478bd9Sstevel@tonic-gate Aliste plmco; 3837c478bd9Sstevel@tonic-gate Lm_cntl *plmc, *nlmc; 3847c478bd9Sstevel@tonic-gate 3857c478bd9Sstevel@tonic-gate /* 3867c478bd9Sstevel@tonic-gate * If this link-map control list is being relocated, return. The object 3877c478bd9Sstevel@tonic-gate * that has just been added will be picked up by the existing relocation 3887c478bd9Sstevel@tonic-gate * thread. Note, this is only really meaningful during process init- 3897c478bd9Sstevel@tonic-gate * ialization, as objects are added to the main link-map control list. 3907c478bd9Sstevel@tonic-gate * Following this initialization, each family of objects that are loaded 3917c478bd9Sstevel@tonic-gate * are added to a new link-map control list. 3927c478bd9Sstevel@tonic-gate */ 3937c478bd9Sstevel@tonic-gate /* LINTED */ 3947c478bd9Sstevel@tonic-gate nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 3957c478bd9Sstevel@tonic-gate 3967c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_RELOCATING) 3977c478bd9Sstevel@tonic-gate return (1); 3987c478bd9Sstevel@tonic-gate 3997c478bd9Sstevel@tonic-gate nlmc->lc_flags |= LMC_FLG_RELOCATING; 4007c478bd9Sstevel@tonic-gate 4017c478bd9Sstevel@tonic-gate /* 4027c478bd9Sstevel@tonic-gate * Relocate one or more link-maps of a link map control list. If this 4037c478bd9Sstevel@tonic-gate * object doesn't belong to the present link-map control list then it 4047c478bd9Sstevel@tonic-gate * must already have been relocated, or it is in the process of being 4057c478bd9Sstevel@tonic-gate * relocated prior to us recursing into this relocation. In either 4067c478bd9Sstevel@tonic-gate * case, ignore the object as it's already being taken care of, however, 4077c478bd9Sstevel@tonic-gate * fall through and capture any relocation promotions that might have 4087c478bd9Sstevel@tonic-gate * been established from the reference mode of this object. 4097c478bd9Sstevel@tonic-gate * 4107c478bd9Sstevel@tonic-gate * If we're generating a configuration file using crle(1), two passes 4117c478bd9Sstevel@tonic-gate * may be involved. Under the first pass, RTLD_CONFGEN is set. Under 4127c478bd9Sstevel@tonic-gate * this pass, crle() loads objects into the process address space. No 4137c478bd9Sstevel@tonic-gate * relocation is necessary at this point, we simply need to analyze the 4147c478bd9Sstevel@tonic-gate * objects to insure any directly bound dependencies, filtees, etc. 4157c478bd9Sstevel@tonic-gate * get loaded. Although we skip the relocation, fall through to insure 4167c478bd9Sstevel@tonic-gate * any control lists are maintained appropriately. 4177c478bd9Sstevel@tonic-gate * 4187c478bd9Sstevel@tonic-gate * If objects are to be dldump(3c)'ed, crle(1) makes a second pass, 4197c478bd9Sstevel@tonic-gate * using RTLD_NOW and RTLD_CONFGEN. The RTLD_NOW effectively carries 4207c478bd9Sstevel@tonic-gate * out the relocations of all loaded objects. 4217c478bd9Sstevel@tonic-gate */ 4227c478bd9Sstevel@tonic-gate if ((nlmco == CNTL(nlmp)) && 4237c478bd9Sstevel@tonic-gate ((MODE(nlmp) & (RTLD_NOW | RTLD_CONFGEN)) != RTLD_CONFGEN)) { 4247c478bd9Sstevel@tonic-gate int relocated = 0; 4257c478bd9Sstevel@tonic-gate 4267c478bd9Sstevel@tonic-gate /* 4277c478bd9Sstevel@tonic-gate * Determine whether the initial link-map control list has 4287c478bd9Sstevel@tonic-gate * started relocation. From this point, should any interposing 4297c478bd9Sstevel@tonic-gate * objects be added to this link-map control list, the objects 4307c478bd9Sstevel@tonic-gate * are demoted to standard objects. Their interposition can't 4317c478bd9Sstevel@tonic-gate * be guaranteed once relocations have been carried out. 4327c478bd9Sstevel@tonic-gate */ 4337c478bd9Sstevel@tonic-gate if (nlmco == ALO_DATA) 4347c478bd9Sstevel@tonic-gate lml->lm_flags |= LML_FLG_STARTREL; 4357c478bd9Sstevel@tonic-gate 4367c478bd9Sstevel@tonic-gate /* 4377c478bd9Sstevel@tonic-gate * Relocate the link-map control list. 4387c478bd9Sstevel@tonic-gate */ 4397c478bd9Sstevel@tonic-gate lret = _relocate_lmc(lml, nlmp, &relocated); 4407c478bd9Sstevel@tonic-gate } 4417c478bd9Sstevel@tonic-gate 4427c478bd9Sstevel@tonic-gate /* 4437c478bd9Sstevel@tonic-gate * Determine the new, and previous link-map control lists. 4447c478bd9Sstevel@tonic-gate */ 44524a6229eSrie /* LINTED */ 44624a6229eSrie nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 4476679fdc0Srie if (nlmco == ALO_DATA) { 4486679fdc0Srie plmco = nlmco; 4497c478bd9Sstevel@tonic-gate plmc = nlmc; 4506679fdc0Srie } else { 4517c478bd9Sstevel@tonic-gate plmco = nlmco - lml->lm_lists->al_size; 4527c478bd9Sstevel@tonic-gate /* LINTED */ 4537c478bd9Sstevel@tonic-gate plmc = (Lm_cntl *)((char *)lml->lm_lists + plmco); 4547c478bd9Sstevel@tonic-gate } 4557c478bd9Sstevel@tonic-gate 4567c478bd9Sstevel@tonic-gate /* 4577c478bd9Sstevel@tonic-gate * Having completed this control list of objects, they can now be bound 4587c478bd9Sstevel@tonic-gate * to from other objects. Move this control list to the control list 4597c478bd9Sstevel@tonic-gate * that precedes it. Although this control list may have only bound to 4607c478bd9Sstevel@tonic-gate * controls lists much higher up the control list stack, it must only 4617c478bd9Sstevel@tonic-gate * be moved up one control list so as to preserve the link-map order 4627c478bd9Sstevel@tonic-gate * that may have already been traversed in search of symbols. 4637c478bd9Sstevel@tonic-gate */ 4647c478bd9Sstevel@tonic-gate if (lret && (nlmco != ALO_DATA) && nlmc->lc_head) 4657c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 4667c478bd9Sstevel@tonic-gate 4677c478bd9Sstevel@tonic-gate /* 4687c478bd9Sstevel@tonic-gate * Determine whether existing objects that have already been relocated, 4697c478bd9Sstevel@tonic-gate * need any additional relocations performed. This can occur when new 4707c478bd9Sstevel@tonic-gate * objects are loaded with RTLD_NOW, and these new objects have 4717c478bd9Sstevel@tonic-gate * dependencies on objects that are already loaded. Note, that we peel 4727c478bd9Sstevel@tonic-gate * any relocation promotions off of one control list at a time. This 4737c478bd9Sstevel@tonic-gate * prevents relocations from being bound to objects that might yet fail 4747c478bd9Sstevel@tonic-gate * to relocate themselves. 4757c478bd9Sstevel@tonic-gate */ 4767c478bd9Sstevel@tonic-gate while ((alp = plmc->lc_now) != 0) { 4777c478bd9Sstevel@tonic-gate Aliste off; 4787c478bd9Sstevel@tonic-gate Rt_map **lmpp; 4797c478bd9Sstevel@tonic-gate 4807c478bd9Sstevel@tonic-gate /* 4817c478bd9Sstevel@tonic-gate * Remove the relocation promotion list, as performing more 4827c478bd9Sstevel@tonic-gate * relocations may result in discovering more objects that need 4837c478bd9Sstevel@tonic-gate * promotion. 4847c478bd9Sstevel@tonic-gate */ 4857c478bd9Sstevel@tonic-gate plmc->lc_now = 0; 4867c478bd9Sstevel@tonic-gate 4877c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(alp, off, lmpp)) { 4887c478bd9Sstevel@tonic-gate Rt_map *lmp = *lmpp; 4897c478bd9Sstevel@tonic-gate 4907c478bd9Sstevel@tonic-gate /* 4917c478bd9Sstevel@tonic-gate * If the original relocation of the link-map control 4927c478bd9Sstevel@tonic-gate * list failed, or one of the relocation promotions of 4937c478bd9Sstevel@tonic-gate * this loop has failed, demote any pending objects 4947c478bd9Sstevel@tonic-gate * relocation mode. 4957c478bd9Sstevel@tonic-gate */ 4967c478bd9Sstevel@tonic-gate if ((lret == 0) || (pret == 0)) { 4977c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_NOW; 4987c478bd9Sstevel@tonic-gate MODE(lmp) |= RTLD_LAZY; 4997c478bd9Sstevel@tonic-gate continue; 5007c478bd9Sstevel@tonic-gate } 5017c478bd9Sstevel@tonic-gate 5027c478bd9Sstevel@tonic-gate /* 5037c478bd9Sstevel@tonic-gate * If a relocation fails, save the error condition. 5047c478bd9Sstevel@tonic-gate * It's possible that all new objects on the original 5057c478bd9Sstevel@tonic-gate * link-map control list have been relocated 5067c478bd9Sstevel@tonic-gate * successfully, but if the user request requires 5077c478bd9Sstevel@tonic-gate * promoting objects that have already been loaded, we 5087c478bd9Sstevel@tonic-gate * have to indicate that this operation couldn't be 5097c478bd9Sstevel@tonic-gate * performed. The unrelocated objects are in use on 5107c478bd9Sstevel@tonic-gate * another control list, and may continue to be used. 5117c478bd9Sstevel@tonic-gate * If the .plt that resulted in the error is called, 5127c478bd9Sstevel@tonic-gate * then the process will receive a fatal error at that 5137c478bd9Sstevel@tonic-gate * time. But, the .plt may never be called. 5147c478bd9Sstevel@tonic-gate */ 5157c478bd9Sstevel@tonic-gate if (relocate_so(lml, lmp, 0, 1) == 0) 5167c478bd9Sstevel@tonic-gate pret = 0; 5177c478bd9Sstevel@tonic-gate } 5187c478bd9Sstevel@tonic-gate 5197c478bd9Sstevel@tonic-gate /* 5207c478bd9Sstevel@tonic-gate * Having promoted any objects, determine whether additional 5217c478bd9Sstevel@tonic-gate * dependencies were added, and if so move them to the previous 5227c478bd9Sstevel@tonic-gate * link-map control list. 5237c478bd9Sstevel@tonic-gate */ 52424a6229eSrie /* LINTED */ 52524a6229eSrie nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 52624a6229eSrie /* LINTED */ 52724a6229eSrie plmc = (Lm_cntl *)((char *)lml->lm_lists + plmco); 5287c478bd9Sstevel@tonic-gate if ((nlmco != ALO_DATA) && nlmc->lc_head) 5297c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 5307c478bd9Sstevel@tonic-gate (void) free(alp); 5317c478bd9Sstevel@tonic-gate } 5327c478bd9Sstevel@tonic-gate 53324a6229eSrie /* 53424a6229eSrie * Indicate that relocations are no longer active for this control list. 53524a6229eSrie */ 53624a6229eSrie /* LINTED */ 53724a6229eSrie nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 5387c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_RELOCATING; 5397c478bd9Sstevel@tonic-gate 5407c478bd9Sstevel@tonic-gate if (lret && pret) 5417c478bd9Sstevel@tonic-gate return (1); 5427c478bd9Sstevel@tonic-gate else 5437c478bd9Sstevel@tonic-gate return (0); 5447c478bd9Sstevel@tonic-gate } 5457c478bd9Sstevel@tonic-gate 5467c478bd9Sstevel@tonic-gate /* 5477c478bd9Sstevel@tonic-gate * Inherit the first rejection message for possible later diagnostics. 5487c478bd9Sstevel@tonic-gate * 5497c478bd9Sstevel@tonic-gate * Any attempt to process a file that is unsuccessful, should be accompanied 5507c478bd9Sstevel@tonic-gate * with an error diagnostic. However, some operations like searching for a 5517c478bd9Sstevel@tonic-gate * simple filename, involve trying numerous paths, and an error message for each 5527c478bd9Sstevel@tonic-gate * lookup is not required. Although a multiple search can fail, it's possible 5537c478bd9Sstevel@tonic-gate * that a file was found, but was rejected because it was the wrong type. 5547c478bd9Sstevel@tonic-gate * To satisfy these possibilities, the first failure is recorded as a rejection 5557c478bd9Sstevel@tonic-gate * message, and this message is used later for a more specific diagnostic. 5567c478bd9Sstevel@tonic-gate * 5577c478bd9Sstevel@tonic-gate * File searches are focused at load_one(), and from here a rejection descriptor 5587c478bd9Sstevel@tonic-gate * is passed down to various child routines. If these child routines can 5597c478bd9Sstevel@tonic-gate * process multiple files, then they will maintain their own rejection desc- 5607c478bd9Sstevel@tonic-gate * riptor. This is filled in for any failures, and a diagnostic produced to 5617c478bd9Sstevel@tonic-gate * reflect the failure. The child routines then employ rejection_inherit() to 5627c478bd9Sstevel@tonic-gate * pass the first rejection message back to load_one(). 5637c478bd9Sstevel@tonic-gate * 5647c478bd9Sstevel@tonic-gate * Note that the name, and rejection string must be duplicated, as the name 5657c478bd9Sstevel@tonic-gate * buffer and error string buffer (see conv_ routines) may be reused for 5667c478bd9Sstevel@tonic-gate * additional processing or rejection messages. 5677c478bd9Sstevel@tonic-gate * 5687c478bd9Sstevel@tonic-gate * As this routine is called to clean up after a failed open, remove any 5697c478bd9Sstevel@tonic-gate * resolved pathname that might have been allocated as the file was processed. 5707c478bd9Sstevel@tonic-gate */ 5717c478bd9Sstevel@tonic-gate void 5727c478bd9Sstevel@tonic-gate rejection_inherit(Rej_desc *rej1, Rej_desc *rej2, Fdesc *fdp) 5737c478bd9Sstevel@tonic-gate { 5747c478bd9Sstevel@tonic-gate if (rej2->rej_type && (rej1->rej_type == 0)) { 5757c478bd9Sstevel@tonic-gate rej1->rej_type = rej2->rej_type; 5767c478bd9Sstevel@tonic-gate rej1->rej_info = rej2->rej_info; 5777c478bd9Sstevel@tonic-gate rej1->rej_flag = rej2->rej_flag; 5787c478bd9Sstevel@tonic-gate if (rej2->rej_name) 5797c478bd9Sstevel@tonic-gate rej1->rej_name = strdup(rej2->rej_name); 5807c478bd9Sstevel@tonic-gate if (rej2->rej_str) { 5817c478bd9Sstevel@tonic-gate if ((rej1->rej_str = strdup(rej2->rej_str)) == 0) 5827c478bd9Sstevel@tonic-gate rej1->rej_str = MSG_ORIG(MSG_EMG_ENOMEM); 5837c478bd9Sstevel@tonic-gate } 5847c478bd9Sstevel@tonic-gate } 5857c478bd9Sstevel@tonic-gate if (fdp && fdp->fd_nname && fdp->fd_pname && 5867c478bd9Sstevel@tonic-gate (fdp->fd_pname != fdp->fd_nname)) { 5877c478bd9Sstevel@tonic-gate free((void *)fdp->fd_pname); 5887c478bd9Sstevel@tonic-gate fdp->fd_pname = 0; 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 6967c478bd9Sstevel@tonic-gate /* 6977c478bd9Sstevel@tonic-gate * Function that determines whether a file name has already been loaded; if so, 6987c478bd9Sstevel@tonic-gate * returns a pointer to its link map structure; else returns a NULL pointer. 6997c478bd9Sstevel@tonic-gate */ 7007c478bd9Sstevel@tonic-gate static int 7017c478bd9Sstevel@tonic-gate _is_so_matched(const char *name, const char *str, int base) 7027c478bd9Sstevel@tonic-gate { 7037c478bd9Sstevel@tonic-gate const char *_str; 7047c478bd9Sstevel@tonic-gate 7057c478bd9Sstevel@tonic-gate if (base && ((_str = strrchr(str, '/')) != NULL)) 7067c478bd9Sstevel@tonic-gate _str++; 7077c478bd9Sstevel@tonic-gate else 7087c478bd9Sstevel@tonic-gate _str = str; 7097c478bd9Sstevel@tonic-gate 7107c478bd9Sstevel@tonic-gate return (strcmp(name, _str)); 7117c478bd9Sstevel@tonic-gate } 7127c478bd9Sstevel@tonic-gate 7137c478bd9Sstevel@tonic-gate static Rt_map * 7147c478bd9Sstevel@tonic-gate is_so_matched(Rt_map *lmp, const char *name, int base) 7157c478bd9Sstevel@tonic-gate { 7167c478bd9Sstevel@tonic-gate Aliste off; 7177c478bd9Sstevel@tonic-gate const char **cpp; 7187c478bd9Sstevel@tonic-gate 7197c478bd9Sstevel@tonic-gate /* 7207c478bd9Sstevel@tonic-gate * Typically, dependencies are specified as simple file names 7217c478bd9Sstevel@tonic-gate * (DT_NEEDED == libc.so.1), which are expanded to full pathnames to 7227c478bd9Sstevel@tonic-gate * open the file. The full pathname is NAME(), and the original name 7237c478bd9Sstevel@tonic-gate * is maintained on the ALIAS() list. Look through the ALIAS list first, 7247c478bd9Sstevel@tonic-gate * as this is most likely to match other dependency uses. 7257c478bd9Sstevel@tonic-gate */ 7267c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(ALIAS(lmp), off, cpp)) { 7277c478bd9Sstevel@tonic-gate if (_is_so_matched(name, *cpp, base) == 0) 7287c478bd9Sstevel@tonic-gate return (lmp); 7297c478bd9Sstevel@tonic-gate } 7307c478bd9Sstevel@tonic-gate 7317c478bd9Sstevel@tonic-gate /* 7327c478bd9Sstevel@tonic-gate * Finally compare full paths, this is sometimes useful for catching 7337c478bd9Sstevel@tonic-gate * filter names, or for those that dlopen() the dynamic executable. 7347c478bd9Sstevel@tonic-gate */ 7357c478bd9Sstevel@tonic-gate if (_is_so_matched(name, NAME(lmp), base) == 0) 7367c478bd9Sstevel@tonic-gate return (lmp); 7377c478bd9Sstevel@tonic-gate 7387c478bd9Sstevel@tonic-gate if (PATHNAME(lmp) != NAME(lmp)) { 7397c478bd9Sstevel@tonic-gate if (_is_so_matched(name, PATHNAME(lmp), base) == 0) 7407c478bd9Sstevel@tonic-gate return (lmp); 7417c478bd9Sstevel@tonic-gate } 7427c478bd9Sstevel@tonic-gate return (0); 7437c478bd9Sstevel@tonic-gate } 7447c478bd9Sstevel@tonic-gate 7457c478bd9Sstevel@tonic-gate Rt_map * 7467c478bd9Sstevel@tonic-gate is_so_loaded(Lm_list *lml, const char *name, int base) 7477c478bd9Sstevel@tonic-gate { 7487c478bd9Sstevel@tonic-gate Rt_map *lmp; 7497c478bd9Sstevel@tonic-gate const char *_name; 7507c478bd9Sstevel@tonic-gate avl_index_t where; 7517c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 7527c478bd9Sstevel@tonic-gate Aliste off; 7537c478bd9Sstevel@tonic-gate 7547c478bd9Sstevel@tonic-gate /* 7557c478bd9Sstevel@tonic-gate * If we've been asked to do a basename search, first determine if 7567c478bd9Sstevel@tonic-gate * the pathname is registered in the FullpathNode AVL tree. 7577c478bd9Sstevel@tonic-gate */ 7587c478bd9Sstevel@tonic-gate if (base && (name[0] == '/') && 7597c478bd9Sstevel@tonic-gate ((lmp = fpavl_loaded(lml, name, &where)) != NULL) && 7607c478bd9Sstevel@tonic-gate ((FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) == 0)) 7617c478bd9Sstevel@tonic-gate return (lmp); 7627c478bd9Sstevel@tonic-gate 7637c478bd9Sstevel@tonic-gate /* 7647c478bd9Sstevel@tonic-gate * If we've been asked to do a basename search reduce the input name 7657c478bd9Sstevel@tonic-gate * to its basename. 7667c478bd9Sstevel@tonic-gate */ 7677c478bd9Sstevel@tonic-gate if (base && ((_name = strrchr(name, '/')) != NULL)) 7687c478bd9Sstevel@tonic-gate _name++; 7697c478bd9Sstevel@tonic-gate else 7707c478bd9Sstevel@tonic-gate _name = name; 7717c478bd9Sstevel@tonic-gate 7727c478bd9Sstevel@tonic-gate /* 7737c478bd9Sstevel@tonic-gate * Loop through the callers link-map lists. 7747c478bd9Sstevel@tonic-gate */ 7757c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(lml->lm_lists, off, lmc)) { 7767c478bd9Sstevel@tonic-gate for (lmp = lmc->lc_head; lmp; lmp = (Rt_map *)NEXT(lmp)) { 7777c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) 7787c478bd9Sstevel@tonic-gate continue; 7797c478bd9Sstevel@tonic-gate 7807c478bd9Sstevel@tonic-gate if (is_so_matched(lmp, _name, base)) 7817c478bd9Sstevel@tonic-gate return (lmp); 7827c478bd9Sstevel@tonic-gate } 7837c478bd9Sstevel@tonic-gate } 7847c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 7857c478bd9Sstevel@tonic-gate } 7867c478bd9Sstevel@tonic-gate 7877c478bd9Sstevel@tonic-gate 7887c478bd9Sstevel@tonic-gate /* 7897c478bd9Sstevel@tonic-gate * Tracing is enabled by the LD_TRACE_LOADED_OPTIONS environment variable which 7907c478bd9Sstevel@tonic-gate * is normally set from ldd(1). For each link map we load, print the load name 7917c478bd9Sstevel@tonic-gate * and the full pathname of the shared object. 7927c478bd9Sstevel@tonic-gate */ 7937c478bd9Sstevel@tonic-gate /* ARGSUSED4 */ 7947c478bd9Sstevel@tonic-gate static void 7957c478bd9Sstevel@tonic-gate trace_so(Rt_map *clmp, Rej_desc *rej, const char *name, const char *path, 7967c478bd9Sstevel@tonic-gate int alter, const char *nfound) 7977c478bd9Sstevel@tonic-gate { 7987c478bd9Sstevel@tonic-gate const char *str = MSG_ORIG(MSG_STR_EMPTY); 7997c478bd9Sstevel@tonic-gate const char *reject = MSG_ORIG(MSG_STR_EMPTY); 8007c478bd9Sstevel@tonic-gate char _reject[PATH_MAX]; 8017c478bd9Sstevel@tonic-gate 8027c478bd9Sstevel@tonic-gate /* 8037c478bd9Sstevel@tonic-gate * The first time through trace_so() will only have lddstub on the 8047c478bd9Sstevel@tonic-gate * link-map list and the preloaded shared object is supplied as "path". 8057c478bd9Sstevel@tonic-gate * As we don't want to print this shared object as a dependency, but 8067c478bd9Sstevel@tonic-gate * instead inspect *its* dependencies, return. 8077c478bd9Sstevel@tonic-gate */ 8087c478bd9Sstevel@tonic-gate if (FLAGS1(clmp) & FL1_RT_LDDSTUB) 8097c478bd9Sstevel@tonic-gate return; 8107c478bd9Sstevel@tonic-gate 8117c478bd9Sstevel@tonic-gate /* 8127c478bd9Sstevel@tonic-gate * Without any rejection info, this is a supplied not-found condition. 8137c478bd9Sstevel@tonic-gate */ 8147c478bd9Sstevel@tonic-gate if (rej && (rej->rej_type == 0)) { 8157c478bd9Sstevel@tonic-gate (void) printf(nfound, name); 8167c478bd9Sstevel@tonic-gate return; 8177c478bd9Sstevel@tonic-gate } 8187c478bd9Sstevel@tonic-gate 8197c478bd9Sstevel@tonic-gate /* 8207c478bd9Sstevel@tonic-gate * If rejection information exists then establish what object was 8217c478bd9Sstevel@tonic-gate * found and the reason for its rejection. 8227c478bd9Sstevel@tonic-gate */ 8237c478bd9Sstevel@tonic-gate if (rej) { 8247c478bd9Sstevel@tonic-gate /* LINTED */ 8257c478bd9Sstevel@tonic-gate (void) snprintf(_reject, PATH_MAX, 8265aefb655Srie MSG_INTL(ldd_reject[rej->rej_type]), conv_reject_desc(rej)); 8277c478bd9Sstevel@tonic-gate if (rej->rej_name) 8287c478bd9Sstevel@tonic-gate path = rej->rej_name; 8297c478bd9Sstevel@tonic-gate reject = (char *)_reject; 8307c478bd9Sstevel@tonic-gate 8317c478bd9Sstevel@tonic-gate /* 8327c478bd9Sstevel@tonic-gate * Was an alternative pathname defined (from a configuration 8337c478bd9Sstevel@tonic-gate * file). 8347c478bd9Sstevel@tonic-gate */ 8357c478bd9Sstevel@tonic-gate if (rej->rej_flag & FLG_FD_ALTER) 8367c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 8377c478bd9Sstevel@tonic-gate } else { 8387c478bd9Sstevel@tonic-gate if (alter) 8397c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 8407c478bd9Sstevel@tonic-gate } 8417c478bd9Sstevel@tonic-gate 8427c478bd9Sstevel@tonic-gate /* 8437c478bd9Sstevel@tonic-gate * If the load name isn't a full pathname print its associated pathname 8447c478bd9Sstevel@tonic-gate * together with all the other information we've gathered. 8457c478bd9Sstevel@tonic-gate */ 8467c478bd9Sstevel@tonic-gate if (*name == '/') 8477c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), path, str, reject); 8487c478bd9Sstevel@tonic-gate else 8497c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), name, path, str, reject); 8507c478bd9Sstevel@tonic-gate } 8517c478bd9Sstevel@tonic-gate 8527c478bd9Sstevel@tonic-gate 8537c478bd9Sstevel@tonic-gate /* 8547c478bd9Sstevel@tonic-gate * Establish a link-map mode, initializing it if it has just been loaded, or 8557c478bd9Sstevel@tonic-gate * potentially updating it if it already exists. 8567c478bd9Sstevel@tonic-gate */ 8577c478bd9Sstevel@tonic-gate int 8587c478bd9Sstevel@tonic-gate update_mode(Rt_map *lmp, int omode, int nmode) 8597c478bd9Sstevel@tonic-gate { 860dffec89cSrie Lm_list *lml = LIST(lmp); 8617c478bd9Sstevel@tonic-gate int pmode = 0; 8627c478bd9Sstevel@tonic-gate 8637c478bd9Sstevel@tonic-gate /* 8647c478bd9Sstevel@tonic-gate * A newly loaded object hasn't had its mode set yet. Modes are used to 8657c478bd9Sstevel@tonic-gate * load dependencies, so don't propagate any parent or no-load flags, as 8667c478bd9Sstevel@tonic-gate * these would adversely affect this objects ability to load any of its 8677c478bd9Sstevel@tonic-gate * dependencies that aren't already loaded. RTLD_FIRST is applicable to 8687c478bd9Sstevel@tonic-gate * this objects handle creation only, and should not be propagated. 8697c478bd9Sstevel@tonic-gate */ 8707c478bd9Sstevel@tonic-gate if ((FLAGS(lmp) & FLG_RT_MODESET) == 0) { 8717c478bd9Sstevel@tonic-gate MODE(lmp) |= nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST); 8727c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_MODESET; 8737c478bd9Sstevel@tonic-gate return (1); 8747c478bd9Sstevel@tonic-gate } 8757c478bd9Sstevel@tonic-gate 8767c478bd9Sstevel@tonic-gate /* 8777c478bd9Sstevel@tonic-gate * Establish any new overriding modes. RTLD_LAZY and RTLD_NOW should be 8787c478bd9Sstevel@tonic-gate * represented individually (this is historic, as these two flags were 8797c478bd9Sstevel@tonic-gate * the only flags originally available to dlopen()). Other flags are 8807c478bd9Sstevel@tonic-gate * accumulative, but have a hierarchy of preference. 8817c478bd9Sstevel@tonic-gate */ 8827c478bd9Sstevel@tonic-gate if ((omode & RTLD_LAZY) && (nmode & RTLD_NOW)) { 8837c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_LAZY; 8847c478bd9Sstevel@tonic-gate pmode |= RTLD_NOW; 8857c478bd9Sstevel@tonic-gate } 8867c478bd9Sstevel@tonic-gate 8877c478bd9Sstevel@tonic-gate pmode |= ((~omode & nmode) & 8887c478bd9Sstevel@tonic-gate (RTLD_GLOBAL | RTLD_WORLD | RTLD_NODELETE)); 8897c478bd9Sstevel@tonic-gate if (pmode) { 8905aefb655Srie DBG_CALL(Dbg_file_mode_promote(lmp, pmode)); 8917c478bd9Sstevel@tonic-gate MODE(lmp) |= pmode; 8927c478bd9Sstevel@tonic-gate } 8937c478bd9Sstevel@tonic-gate 8947c478bd9Sstevel@tonic-gate /* 8957c478bd9Sstevel@tonic-gate * If this load is an RTLD_NOW request and the object has already been 8967c478bd9Sstevel@tonic-gate * loaded non-RTLD_NOW, append this object to the relocation-now list 8977c478bd9Sstevel@tonic-gate * of the objects associated control list. Note, if the object hasn't 8987c478bd9Sstevel@tonic-gate * yet been relocated, setting its MODE() to RTLD_NOW will establish 8997c478bd9Sstevel@tonic-gate * full relocation processing when it eventually gets relocated. 9007c478bd9Sstevel@tonic-gate */ 9017c478bd9Sstevel@tonic-gate if ((pmode & RTLD_NOW) && 9027c478bd9Sstevel@tonic-gate (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))) { 9037c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 9047c478bd9Sstevel@tonic-gate 9057c478bd9Sstevel@tonic-gate /* LINTED */ 9067c478bd9Sstevel@tonic-gate lmc = (Lm_cntl *)((char *)(LIST(lmp)->lm_lists) + CNTL(lmp)); 9077c478bd9Sstevel@tonic-gate (void) alist_append(&(lmc->lc_now), &lmp, sizeof (Rt_map *), 9087c478bd9Sstevel@tonic-gate AL_CNT_LMNOW); 9097c478bd9Sstevel@tonic-gate } 9107c478bd9Sstevel@tonic-gate 9117c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 9127c478bd9Sstevel@tonic-gate /* 9137c478bd9Sstevel@tonic-gate * For patch backward compatibility the following .init collection 9147c478bd9Sstevel@tonic-gate * is disabled. 9157c478bd9Sstevel@tonic-gate */ 9167c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 9177c478bd9Sstevel@tonic-gate return (pmode); 9187c478bd9Sstevel@tonic-gate #endif 9197c478bd9Sstevel@tonic-gate 9207c478bd9Sstevel@tonic-gate /* 921dffec89cSrie * If this objects .init has been collected but has not yet been called, 922dffec89cSrie * it may be necessary to reevaluate the object using tsort(). For 9237c478bd9Sstevel@tonic-gate * example, a new dlopen() hierarchy may bind to uninitialized objects 9247c478bd9Sstevel@tonic-gate * that are already loaded, or a dlopen(RTLD_NOW) can establish new 9257c478bd9Sstevel@tonic-gate * bindings between already loaded objects that require the tsort() 926dffec89cSrie * information be recomputed. If however, no new objects have been 927dffec89cSrie * added to the process, and this object hasn't been promoted, don't 928dffec89cSrie * bother reevaluating the .init. The present tsort() information is 929dffec89cSrie * probably as accurate as necessary, and by not establishing a parallel 930dffec89cSrie * tsort() we can help reduce the amount of recursion possible between 931dffec89cSrie * .inits. 9327c478bd9Sstevel@tonic-gate */ 933dffec89cSrie if (((FLAGS(lmp) & 934dffec89cSrie (FLG_RT_INITCLCT | FLG_RT_INITCALL)) == FLG_RT_INITCLCT) && 935dffec89cSrie ((lml->lm_flags & LML_FLG_OBJADDED) || ((pmode & RTLD_NOW) && 936dffec89cSrie (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))))) { 9377c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_INITCLCT; 9387c478bd9Sstevel@tonic-gate LIST(lmp)->lm_init++; 939dffec89cSrie LIST(lmp)->lm_flags |= LML_FLG_OBJREEVAL; 9407c478bd9Sstevel@tonic-gate } 9417c478bd9Sstevel@tonic-gate 9427c478bd9Sstevel@tonic-gate return (pmode); 9437c478bd9Sstevel@tonic-gate } 9447c478bd9Sstevel@tonic-gate 9457c478bd9Sstevel@tonic-gate /* 9467c478bd9Sstevel@tonic-gate * Determine whether an alias name already exists, and if not create one. This 9477c478bd9Sstevel@tonic-gate * is typically used to retain dependency names, such as "libc.so.1", which 9487c478bd9Sstevel@tonic-gate * would have been expanded to full path names when they were loaded. The 9497c478bd9Sstevel@tonic-gate * full path names (NAME() and possibly PATHNAME()) are maintained as Fullpath 9507c478bd9Sstevel@tonic-gate * AVL nodes, and thus would have been matched by fpavl_loaded() during 9517c478bd9Sstevel@tonic-gate * file_open(). 9527c478bd9Sstevel@tonic-gate */ 9537c478bd9Sstevel@tonic-gate int 9547c478bd9Sstevel@tonic-gate append_alias(Rt_map *lmp, const char *str, int *added) 9557c478bd9Sstevel@tonic-gate { 9567c478bd9Sstevel@tonic-gate Aliste off; 9577c478bd9Sstevel@tonic-gate char **cpp, *cp; 9587c478bd9Sstevel@tonic-gate 9597c478bd9Sstevel@tonic-gate /* 9607c478bd9Sstevel@tonic-gate * Determine if this filename is already on the alias list. 9617c478bd9Sstevel@tonic-gate */ 9627c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(ALIAS(lmp), off, cpp)) { 9637c478bd9Sstevel@tonic-gate if (strcmp(*cpp, str) == 0) 9647c478bd9Sstevel@tonic-gate return (1); 9657c478bd9Sstevel@tonic-gate } 9667c478bd9Sstevel@tonic-gate 9677c478bd9Sstevel@tonic-gate /* 9687c478bd9Sstevel@tonic-gate * This is a new alias, append it to the alias list. 9697c478bd9Sstevel@tonic-gate */ 9707c478bd9Sstevel@tonic-gate if ((cp = strdup(str)) == 0) 9717c478bd9Sstevel@tonic-gate return (0); 9727c478bd9Sstevel@tonic-gate 9737c478bd9Sstevel@tonic-gate if (alist_append(&ALIAS(lmp), &cp, sizeof (char *), 9747c478bd9Sstevel@tonic-gate AL_CNT_ALIAS) == 0) { 9757c478bd9Sstevel@tonic-gate free(cp); 9767c478bd9Sstevel@tonic-gate return (0); 9777c478bd9Sstevel@tonic-gate } 9787c478bd9Sstevel@tonic-gate if (added) 9797c478bd9Sstevel@tonic-gate *added = 1; 9807c478bd9Sstevel@tonic-gate return (1); 9817c478bd9Sstevel@tonic-gate } 9827c478bd9Sstevel@tonic-gate 9837c478bd9Sstevel@tonic-gate /* 9847c478bd9Sstevel@tonic-gate * Determine whether a file is already loaded by comparing device and inode 9857c478bd9Sstevel@tonic-gate * values. 9867c478bd9Sstevel@tonic-gate */ 9877c478bd9Sstevel@tonic-gate static Rt_map * 9887c478bd9Sstevel@tonic-gate is_devinode_loaded(struct stat *status, Lm_list *lml, const char *name, 9897c478bd9Sstevel@tonic-gate uint_t flags) 9907c478bd9Sstevel@tonic-gate { 9917c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 9927c478bd9Sstevel@tonic-gate Aliste off; 9937c478bd9Sstevel@tonic-gate 9947c478bd9Sstevel@tonic-gate /* 9957c478bd9Sstevel@tonic-gate * If this is an auditor, it will have been opened on a new link-map. 9967c478bd9Sstevel@tonic-gate * To prevent multiple occurrances of the same auditor on multiple 9977c478bd9Sstevel@tonic-gate * link-maps, search the head of each link-map list and see if this 9987c478bd9Sstevel@tonic-gate * object is already loaded as an auditor. 9997c478bd9Sstevel@tonic-gate */ 10007c478bd9Sstevel@tonic-gate if (flags & FLG_RT_AUDIT) { 10017c478bd9Sstevel@tonic-gate Lm_list * lml; 10027c478bd9Sstevel@tonic-gate Listnode * lnp; 10037c478bd9Sstevel@tonic-gate 10047c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(&dynlm_list, lnp, lml)) { 10057c478bd9Sstevel@tonic-gate Rt_map *nlmp = lml->lm_head; 10067c478bd9Sstevel@tonic-gate 10077c478bd9Sstevel@tonic-gate if (nlmp && ((FLAGS(nlmp) & 10087c478bd9Sstevel@tonic-gate (FLG_RT_AUDIT | FLG_RT_DELETE)) == FLG_RT_AUDIT) && 10097c478bd9Sstevel@tonic-gate (STDEV(nlmp) == status->st_dev) && 10107c478bd9Sstevel@tonic-gate (STINO(nlmp) == status->st_ino)) 10117c478bd9Sstevel@tonic-gate return (nlmp); 10127c478bd9Sstevel@tonic-gate } 10137c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 10147c478bd9Sstevel@tonic-gate } 10157c478bd9Sstevel@tonic-gate 10167c478bd9Sstevel@tonic-gate /* 10177c478bd9Sstevel@tonic-gate * If the file has been found determine from the new files status 10187c478bd9Sstevel@tonic-gate * information if this file is actually linked to one we already have 10197c478bd9Sstevel@tonic-gate * mapped. This catches symlink names not caught by is_so_loaded(). 10207c478bd9Sstevel@tonic-gate */ 10217c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(lml->lm_lists, off, lmc)) { 10227c478bd9Sstevel@tonic-gate Rt_map *nlmp; 10237c478bd9Sstevel@tonic-gate 10247c478bd9Sstevel@tonic-gate for (nlmp = lmc->lc_head; nlmp; nlmp = (Rt_map *)NEXT(nlmp)) { 10257c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_DELETE) || 10267c478bd9Sstevel@tonic-gate (FLAGS1(nlmp) & FL1_RT_LDDSTUB)) 10277c478bd9Sstevel@tonic-gate continue; 10287c478bd9Sstevel@tonic-gate 10297c478bd9Sstevel@tonic-gate if ((STDEV(nlmp) != status->st_dev) || 10307c478bd9Sstevel@tonic-gate (STINO(nlmp) != status->st_ino)) 10317c478bd9Sstevel@tonic-gate continue; 10327c478bd9Sstevel@tonic-gate 10337c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_VERBOSE) { 10347c478bd9Sstevel@tonic-gate if (*name == '/') 10357c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 10367c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 10377c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 10387c478bd9Sstevel@tonic-gate else 10397c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 10407c478bd9Sstevel@tonic-gate name, NAME(nlmp), 10417c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 10427c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 10437c478bd9Sstevel@tonic-gate } 10447c478bd9Sstevel@tonic-gate return (nlmp); 10457c478bd9Sstevel@tonic-gate } 10467c478bd9Sstevel@tonic-gate } 10477c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 10487c478bd9Sstevel@tonic-gate } 10497c478bd9Sstevel@tonic-gate 10507c478bd9Sstevel@tonic-gate /* 10517c478bd9Sstevel@tonic-gate * Generate any error messages indicating a file could not be found. When 10527c478bd9Sstevel@tonic-gate * preloading or auditing a secure application, it can be a little more helpful 10537c478bd9Sstevel@tonic-gate * to indicate that a search of secure directories has failed, so adjust the 10547c478bd9Sstevel@tonic-gate * messages accordingly. 10557c478bd9Sstevel@tonic-gate */ 10567c478bd9Sstevel@tonic-gate void 10577c478bd9Sstevel@tonic-gate file_notfound(Lm_list *lml, const char *name, Rt_map *clmp, uint_t flags, 10587c478bd9Sstevel@tonic-gate Rej_desc * rej) 10597c478bd9Sstevel@tonic-gate { 10607c478bd9Sstevel@tonic-gate int secure = 0; 10617c478bd9Sstevel@tonic-gate 10627c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SECURE) && 10637c478bd9Sstevel@tonic-gate (flags & (FLG_RT_PRELOAD | FLG_RT_AUDIT))) 10647c478bd9Sstevel@tonic-gate secure++; 10657c478bd9Sstevel@tonic-gate 10667c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 10677c478bd9Sstevel@tonic-gate /* 10687c478bd9Sstevel@tonic-gate * Under ldd(1), auxiliary filtees that can't be loaded are 10697c478bd9Sstevel@tonic-gate * ignored, unless verbose errors are requested. 10707c478bd9Sstevel@tonic-gate */ 10717c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SILENCERR) && 10727c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_TRC_VERBOSE) == 0)) 10737c478bd9Sstevel@tonic-gate return; 10747c478bd9Sstevel@tonic-gate 10757c478bd9Sstevel@tonic-gate if (secure) 10767c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 10777c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_SEC_NFOUND)); 10787c478bd9Sstevel@tonic-gate else 10797c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 10807c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_NFOUND)); 10817c478bd9Sstevel@tonic-gate return; 10827c478bd9Sstevel@tonic-gate } 10837c478bd9Sstevel@tonic-gate 10847c478bd9Sstevel@tonic-gate if (rej->rej_type) { 10855aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(err_reject[rej->rej_type]), 10867c478bd9Sstevel@tonic-gate rej->rej_name ? rej->rej_name : MSG_INTL(MSG_STR_UNKNOWN), 10875aefb655Srie conv_reject_desc(rej)); 10887c478bd9Sstevel@tonic-gate return; 10897c478bd9Sstevel@tonic-gate } 10907c478bd9Sstevel@tonic-gate 10917c478bd9Sstevel@tonic-gate if (secure) 10925aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SEC_OPEN), name); 10937c478bd9Sstevel@tonic-gate else 10945aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), name, 10957c478bd9Sstevel@tonic-gate strerror(ENOENT)); 10967c478bd9Sstevel@tonic-gate } 10977c478bd9Sstevel@tonic-gate 10987c478bd9Sstevel@tonic-gate static int 10997c478bd9Sstevel@tonic-gate file_open(int err, Lm_list *lml, const char *oname, const char *nname, 11007c478bd9Sstevel@tonic-gate Rt_map *clmp, uint_t flags, Fdesc * fdesc, Rej_desc *rej) 11017c478bd9Sstevel@tonic-gate { 11027c478bd9Sstevel@tonic-gate struct stat status; 11037c478bd9Sstevel@tonic-gate Rt_map *nlmp; 11047c478bd9Sstevel@tonic-gate 11057c478bd9Sstevel@tonic-gate fdesc->fd_oname = oname; 11067c478bd9Sstevel@tonic-gate 11077c478bd9Sstevel@tonic-gate if ((err == 0) && (fdesc->fd_flags & FLG_FD_ALTER)) 11085aefb655Srie DBG_CALL(Dbg_file_config_obj(lml, oname, 0, nname)); 11097c478bd9Sstevel@tonic-gate 11107c478bd9Sstevel@tonic-gate /* 11117c478bd9Sstevel@tonic-gate * If we're dealing with a full pathname, determine whether this 11127c478bd9Sstevel@tonic-gate * pathname is already known. Other pathnames fall through to the 11137c478bd9Sstevel@tonic-gate * dev/inode check, as even though the pathname may look the same as 11147c478bd9Sstevel@tonic-gate * one previously used, the process may have changed directory. 11157c478bd9Sstevel@tonic-gate */ 11167c478bd9Sstevel@tonic-gate if ((err == 0) && (nname[0] == '/')) { 11177c478bd9Sstevel@tonic-gate if ((nlmp = fpavl_loaded(lml, nname, 11187c478bd9Sstevel@tonic-gate &(fdesc->fd_avlwhere))) != NULL) { 11197c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 11207c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 11217c478bd9Sstevel@tonic-gate return (1); 11227c478bd9Sstevel@tonic-gate } 11237c478bd9Sstevel@tonic-gate } 11247c478bd9Sstevel@tonic-gate 11257c478bd9Sstevel@tonic-gate if ((err == 0) && ((stat(nname, &status)) != -1)) { 11267c478bd9Sstevel@tonic-gate char path[PATH_MAX]; 11277c478bd9Sstevel@tonic-gate int fd, size, added; 11287c478bd9Sstevel@tonic-gate 11297c478bd9Sstevel@tonic-gate /* 11307c478bd9Sstevel@tonic-gate * If this path has been constructed as part of expanding a 11317c478bd9Sstevel@tonic-gate * HWCAP directory, ignore any subdirectories. For any other 11327c478bd9Sstevel@tonic-gate * reference that expands to a directory, fall through to 11337c478bd9Sstevel@tonic-gate * contruct a meaningful rejection message. 11347c478bd9Sstevel@tonic-gate */ 11357c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) && 11367c478bd9Sstevel@tonic-gate ((status.st_mode & S_IFMT) == S_IFDIR)) 11377c478bd9Sstevel@tonic-gate return (0); 11387c478bd9Sstevel@tonic-gate 11397c478bd9Sstevel@tonic-gate /* 11407c478bd9Sstevel@tonic-gate * Resolve the filename and determine whether the resolved name 11417c478bd9Sstevel@tonic-gate * is already known. Typically, the previous fpavl_loaded() 11427c478bd9Sstevel@tonic-gate * will have caught this, as both NAME() and PATHNAME() for a 11437c478bd9Sstevel@tonic-gate * link-map are recorded in the FullNode AVL tree. However, 11447c478bd9Sstevel@tonic-gate * instances exist where a file can be replaced (loop-back 11457c478bd9Sstevel@tonic-gate * mounts, bfu, etc.), and reference is made to the original 11467c478bd9Sstevel@tonic-gate * file through a symbolic link. By checking the pathname here, 11477c478bd9Sstevel@tonic-gate * we don't fall through to the dev/inode check and conclude 11487c478bd9Sstevel@tonic-gate * that a new file should be loaded. 11497c478bd9Sstevel@tonic-gate */ 11507c478bd9Sstevel@tonic-gate if ((nname[0] == '/') && (rtld_flags & RT_FL_EXECNAME) && 11517c478bd9Sstevel@tonic-gate ((size = resolvepath(nname, path, (PATH_MAX - 1))) > 0)) { 11527c478bd9Sstevel@tonic-gate path[size] = '\0'; 11537c478bd9Sstevel@tonic-gate 11547c478bd9Sstevel@tonic-gate if (strcmp(nname, path)) { 115524a6229eSrie if ((nlmp = 115624a6229eSrie fpavl_loaded(lml, path, 0)) != NULL) { 11577c478bd9Sstevel@tonic-gate added = 0; 11587c478bd9Sstevel@tonic-gate 11597c478bd9Sstevel@tonic-gate if (append_alias(nlmp, nname, 11607c478bd9Sstevel@tonic-gate &added) == 0) 11617c478bd9Sstevel@tonic-gate return (0); 11627c478bd9Sstevel@tonic-gate if (added) 116310a4fa49Srie DBG_CALL(Dbg_file_skip(LIST(clmp), 11645aefb655Srie NAME(nlmp), nname)); 11657c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 11667c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 11677c478bd9Sstevel@tonic-gate return (1); 11687c478bd9Sstevel@tonic-gate } 11697c478bd9Sstevel@tonic-gate 11707c478bd9Sstevel@tonic-gate /* 11717c478bd9Sstevel@tonic-gate * If this pathname hasn't been loaded, save 11727c478bd9Sstevel@tonic-gate * the resolved pathname so that it doesn't 11737c478bd9Sstevel@tonic-gate * have to be recomputed as part of fullpath() 11747c478bd9Sstevel@tonic-gate * processing. 11757c478bd9Sstevel@tonic-gate */ 11767c478bd9Sstevel@tonic-gate if ((fdesc->fd_pname = strdup(path)) == 0) 11777c478bd9Sstevel@tonic-gate return (0); 11787c478bd9Sstevel@tonic-gate } else { 11797c478bd9Sstevel@tonic-gate /* 11807c478bd9Sstevel@tonic-gate * If the resolved name doesn't differ from the 11817c478bd9Sstevel@tonic-gate * original, save it without duplication. 11827c478bd9Sstevel@tonic-gate * Having fd_pname set indicates that no further 11837c478bd9Sstevel@tonic-gate * resolvepath processing is necessary. 11847c478bd9Sstevel@tonic-gate */ 11857c478bd9Sstevel@tonic-gate fdesc->fd_pname = nname; 11867c478bd9Sstevel@tonic-gate } 11877c478bd9Sstevel@tonic-gate } 11887c478bd9Sstevel@tonic-gate 11897c478bd9Sstevel@tonic-gate if (nlmp = is_devinode_loaded(&status, lml, nname, flags)) { 1190*c75e1b9dSrie if (flags & FLG_RT_AUDIT) { 1191*c75e1b9dSrie /* 1192*c75e1b9dSrie * If we've been requested to load an auditor, 1193*c75e1b9dSrie * and an auditor of the same name already 1194*c75e1b9dSrie * exists, then the original auditor is used. 1195*c75e1b9dSrie */ 1196*c75e1b9dSrie DBG_CALL(Dbg_audit_skip(LIST(clmp), 1197*c75e1b9dSrie NAME(nlmp), LIST(nlmp)->lm_lmidstr)); 1198*c75e1b9dSrie } else { 1199*c75e1b9dSrie /* 1200*c75e1b9dSrie * Otherwise, if an alternatively named file 1201*c75e1b9dSrie * has been found for the same dev/inode, add 1202*c75e1b9dSrie * a new name alias, and insert any alias full 1203*c75e1b9dSrie * pathname in the link-map lists AVL tree. 1204*c75e1b9dSrie */ 12057c478bd9Sstevel@tonic-gate added = 0; 12067c478bd9Sstevel@tonic-gate 12077c478bd9Sstevel@tonic-gate if (append_alias(nlmp, nname, &added) == 0) 12087c478bd9Sstevel@tonic-gate return (0); 12097c478bd9Sstevel@tonic-gate if (added) { 1210*c75e1b9dSrie if ((nname[0] == '/') && 1211*c75e1b9dSrie (fpavl_insert(lml, nlmp, 1212*c75e1b9dSrie nname, 0) == 0)) 12137c478bd9Sstevel@tonic-gate return (0); 1214*c75e1b9dSrie DBG_CALL(Dbg_file_skip(LIST(clmp), 1215*c75e1b9dSrie NAME(nlmp), nname)); 12167c478bd9Sstevel@tonic-gate } 1217*c75e1b9dSrie } 1218*c75e1b9dSrie 1219*c75e1b9dSrie /* 1220*c75e1b9dSrie * Record in the file descriptor the existing object 1221*c75e1b9dSrie * that satisfies this open request. 1222*c75e1b9dSrie */ 12237c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 12247c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 12257c478bd9Sstevel@tonic-gate return (1); 12267c478bd9Sstevel@tonic-gate } 12277c478bd9Sstevel@tonic-gate 12287c478bd9Sstevel@tonic-gate if ((fd = open(nname, O_RDONLY, 0)) == -1) { 12297c478bd9Sstevel@tonic-gate /* 12307c478bd9Sstevel@tonic-gate * As the file must exist for the previous stat() to 12317c478bd9Sstevel@tonic-gate * have succeeded, record the error condition. 12327c478bd9Sstevel@tonic-gate */ 12337c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 12347c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 12357c478bd9Sstevel@tonic-gate } else { 12367c478bd9Sstevel@tonic-gate Fct *ftp; 12377c478bd9Sstevel@tonic-gate 12387c478bd9Sstevel@tonic-gate if ((ftp = are_u_this(rej, fd, &status, nname)) != 0) { 12397c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 12407c478bd9Sstevel@tonic-gate fdesc->fd_ftp = ftp; 12417c478bd9Sstevel@tonic-gate fdesc->fd_dev = status.st_dev; 12427c478bd9Sstevel@tonic-gate fdesc->fd_ino = status.st_ino; 12437c478bd9Sstevel@tonic-gate fdesc->fd_fd = fd; 12447c478bd9Sstevel@tonic-gate 12457c478bd9Sstevel@tonic-gate /* 12467c478bd9Sstevel@tonic-gate * Trace that this open has succeeded. 12477c478bd9Sstevel@tonic-gate */ 12487c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 12497c478bd9Sstevel@tonic-gate trace_so(clmp, 0, oname, nname, 12507c478bd9Sstevel@tonic-gate (fdesc->fd_flags & FLG_FD_ALTER), 0); 12517c478bd9Sstevel@tonic-gate } 12527c478bd9Sstevel@tonic-gate return (1); 12537c478bd9Sstevel@tonic-gate } 12547c478bd9Sstevel@tonic-gate (void) close(fd); 12557c478bd9Sstevel@tonic-gate } 12567c478bd9Sstevel@tonic-gate 12577c478bd9Sstevel@tonic-gate } else if (errno != ENOENT) { 12587c478bd9Sstevel@tonic-gate /* 12597c478bd9Sstevel@tonic-gate * If the open() failed for anything other than the file not 12607c478bd9Sstevel@tonic-gate * existing, record the error condition. 12617c478bd9Sstevel@tonic-gate */ 12627c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 12637c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 12647c478bd9Sstevel@tonic-gate } 12657c478bd9Sstevel@tonic-gate 12667c478bd9Sstevel@tonic-gate /* 12677c478bd9Sstevel@tonic-gate * Indicate any rejection. 12687c478bd9Sstevel@tonic-gate */ 12697c478bd9Sstevel@tonic-gate if (rej->rej_type) { 12707c478bd9Sstevel@tonic-gate rej->rej_name = nname; 12717c478bd9Sstevel@tonic-gate rej->rej_flag = (fdesc->fd_flags & FLG_FD_ALTER); 12725aefb655Srie DBG_CALL(Dbg_file_rejected(lml, rej)); 12737c478bd9Sstevel@tonic-gate } 12747c478bd9Sstevel@tonic-gate return (0); 12757c478bd9Sstevel@tonic-gate } 12767c478bd9Sstevel@tonic-gate 12777c478bd9Sstevel@tonic-gate /* 12787c478bd9Sstevel@tonic-gate * Find a full pathname (it contains a "/"). 12797c478bd9Sstevel@tonic-gate */ 12807c478bd9Sstevel@tonic-gate int 12817c478bd9Sstevel@tonic-gate find_path(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 12827c478bd9Sstevel@tonic-gate Fdesc * fdesc, Rej_desc *rej) 12837c478bd9Sstevel@tonic-gate { 12847c478bd9Sstevel@tonic-gate int err = 0; 12857c478bd9Sstevel@tonic-gate 12867c478bd9Sstevel@tonic-gate /* 12877c478bd9Sstevel@tonic-gate * If directory configuration exists determine if this path is known. 12887c478bd9Sstevel@tonic-gate */ 12897c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DIRCFG) { 12907c478bd9Sstevel@tonic-gate Rtc_obj *obj; 12917c478bd9Sstevel@tonic-gate const char *aname; 12927c478bd9Sstevel@tonic-gate 12937c478bd9Sstevel@tonic-gate if ((obj = elf_config_ent(oname, (Word)elf_hash(oname), 12947c478bd9Sstevel@tonic-gate 0, &aname)) != 0) { 12957c478bd9Sstevel@tonic-gate /* 12967c478bd9Sstevel@tonic-gate * If the configuration file states that this path is a 12977c478bd9Sstevel@tonic-gate * directory, or the path is explicitly defined as 12987c478bd9Sstevel@tonic-gate * non-existent (ie. a unused platform specific 12997c478bd9Sstevel@tonic-gate * library), then go no further. 13007c478bd9Sstevel@tonic-gate */ 13017c478bd9Sstevel@tonic-gate if (obj->co_flags & RTC_OBJ_DIRENT) { 13027c478bd9Sstevel@tonic-gate err = EISDIR; 13037c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & 13047c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == 13057c478bd9Sstevel@tonic-gate RTC_OBJ_NOEXIST) { 13067c478bd9Sstevel@tonic-gate err = ENOENT; 13077c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & RTC_OBJ_ALTER) && 13087c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && (lml == &lml_main)) { 13097c478bd9Sstevel@tonic-gate int ret; 13107c478bd9Sstevel@tonic-gate 13117c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 13127c478bd9Sstevel@tonic-gate /* 13137c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. If 13147c478bd9Sstevel@tonic-gate * this fails, and the alternative is flagged 13157c478bd9Sstevel@tonic-gate * as optional, fall through to open the 13167c478bd9Sstevel@tonic-gate * original path. 13177c478bd9Sstevel@tonic-gate */ 13185aefb655Srie DBG_CALL(Dbg_libs_found(lml, aname, 13195aefb655Srie FLG_FD_ALTER)); 13207c478bd9Sstevel@tonic-gate if (((ret = file_open(0, lml, oname, aname, 13217c478bd9Sstevel@tonic-gate clmp, flags, fdesc, rej)) != 0) || 13227c478bd9Sstevel@tonic-gate ((obj->co_flags & RTC_OBJ_OPTINAL) == 0)) 13237c478bd9Sstevel@tonic-gate return (ret); 13247c478bd9Sstevel@tonic-gate 13257c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 13267c478bd9Sstevel@tonic-gate } 13277c478bd9Sstevel@tonic-gate } 13287c478bd9Sstevel@tonic-gate } 13295aefb655Srie DBG_CALL(Dbg_libs_found(lml, oname, 0)); 13307c478bd9Sstevel@tonic-gate return (file_open(err, lml, oname, oname, clmp, flags, fdesc, rej)); 13317c478bd9Sstevel@tonic-gate } 13327c478bd9Sstevel@tonic-gate 13337c478bd9Sstevel@tonic-gate /* 13347c478bd9Sstevel@tonic-gate * Find a simple filename (it doesn't contain a "/"). 13357c478bd9Sstevel@tonic-gate */ 13367c478bd9Sstevel@tonic-gate static int 13377c478bd9Sstevel@tonic-gate _find_file(Lm_list *lml, const char *oname, const char *nname, Rt_map *clmp, 13387c478bd9Sstevel@tonic-gate uint_t flags, Fdesc * fdesc, Rej_desc *rej, Pnode * dir, int aflag) 13397c478bd9Sstevel@tonic-gate { 13405aefb655Srie DBG_CALL(Dbg_libs_found(lml, nname, aflag)); 13417c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_SEARCH) && 13427c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 13437c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_PTH_TRYING), nname, aflag ? 13447c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_ALTER) : MSG_ORIG(MSG_STR_EMPTY)); 13457c478bd9Sstevel@tonic-gate } 13467c478bd9Sstevel@tonic-gate 13477c478bd9Sstevel@tonic-gate /* 13487c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're about 13497c478bd9Sstevel@tonic-gate * to go search for. The audit library may offer an alternative 13507c478bd9Sstevel@tonic-gate * dependency, or indicate that this dependency should be ignored. 13517c478bd9Sstevel@tonic-gate */ 13527c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 13537c478bd9Sstevel@tonic-gate char *aname = audit_objsearch(clmp, nname, dir->p_orig); 13547c478bd9Sstevel@tonic-gate 13557c478bd9Sstevel@tonic-gate if (aname == 0) 13567c478bd9Sstevel@tonic-gate return (0); 13577c478bd9Sstevel@tonic-gate nname = aname; 13587c478bd9Sstevel@tonic-gate } 13597c478bd9Sstevel@tonic-gate return (file_open(0, lml, oname, nname, clmp, flags, fdesc, rej)); 13607c478bd9Sstevel@tonic-gate } 13617c478bd9Sstevel@tonic-gate 1362390b98b5Srie static int 13637c478bd9Sstevel@tonic-gate find_file(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 13647c478bd9Sstevel@tonic-gate Fdesc * fdesc, Rej_desc *rej, Pnode * dir, Word * strhash, size_t olen) 13657c478bd9Sstevel@tonic-gate { 13667c478bd9Sstevel@tonic-gate static Rtc_obj Obj = { 0 }; 13677c478bd9Sstevel@tonic-gate Rtc_obj * dobj; 13687c478bd9Sstevel@tonic-gate const char *nname = oname; 13697c478bd9Sstevel@tonic-gate 13707c478bd9Sstevel@tonic-gate if (dir->p_name == 0) 13717c478bd9Sstevel@tonic-gate return (0); 13727c478bd9Sstevel@tonic-gate if (dir->p_info) { 13737c478bd9Sstevel@tonic-gate dobj = (Rtc_obj *)dir->p_info; 13747c478bd9Sstevel@tonic-gate if ((dobj->co_flags & 13757c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 13767c478bd9Sstevel@tonic-gate return (0); 13777c478bd9Sstevel@tonic-gate } else 13787c478bd9Sstevel@tonic-gate dobj = 0; 13797c478bd9Sstevel@tonic-gate 13807c478bd9Sstevel@tonic-gate /* 13817c478bd9Sstevel@tonic-gate * If configuration information exists see if this directory/file 13827c478bd9Sstevel@tonic-gate * combination exists. 13837c478bd9Sstevel@tonic-gate */ 13847c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_DIRCFG) && 13857c478bd9Sstevel@tonic-gate ((dobj == 0) || (dobj->co_id != 0))) { 13867c478bd9Sstevel@tonic-gate Rtc_obj *fobj; 13877c478bd9Sstevel@tonic-gate const char *alt = 0; 13887c478bd9Sstevel@tonic-gate 13897c478bd9Sstevel@tonic-gate /* 13907c478bd9Sstevel@tonic-gate * If this pnode has not yet been searched for in the 13917c478bd9Sstevel@tonic-gate * configuration file go find it. 13927c478bd9Sstevel@tonic-gate */ 13937c478bd9Sstevel@tonic-gate if (dobj == 0) { 13947c478bd9Sstevel@tonic-gate dobj = elf_config_ent(dir->p_name, 13957c478bd9Sstevel@tonic-gate (Word)elf_hash(dir->p_name), 0, 0); 13967c478bd9Sstevel@tonic-gate if (dobj == 0) 13977c478bd9Sstevel@tonic-gate dobj = &Obj; 13987c478bd9Sstevel@tonic-gate dir->p_info = (void *)dobj; 13997c478bd9Sstevel@tonic-gate 14007c478bd9Sstevel@tonic-gate if ((dobj->co_flags & (RTC_OBJ_NOEXIST | 14017c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 14027c478bd9Sstevel@tonic-gate return (0); 14037c478bd9Sstevel@tonic-gate } 14047c478bd9Sstevel@tonic-gate 14057c478bd9Sstevel@tonic-gate /* 14067c478bd9Sstevel@tonic-gate * If we found a directory search for the file. 14077c478bd9Sstevel@tonic-gate */ 14087c478bd9Sstevel@tonic-gate if (dobj->co_id != 0) { 14097c478bd9Sstevel@tonic-gate if (*strhash == 0) 14107c478bd9Sstevel@tonic-gate *strhash = (Word)elf_hash(nname); 14117c478bd9Sstevel@tonic-gate fobj = elf_config_ent(nname, *strhash, 14127c478bd9Sstevel@tonic-gate dobj->co_id, &alt); 14137c478bd9Sstevel@tonic-gate 14147c478bd9Sstevel@tonic-gate /* 14157c478bd9Sstevel@tonic-gate * If this object specifically does not exist, or the 14167c478bd9Sstevel@tonic-gate * object can't be found in a know-all-entries 14177c478bd9Sstevel@tonic-gate * directory, continue looking. If the object does 14187c478bd9Sstevel@tonic-gate * exist determine if an alternative object exists. 14197c478bd9Sstevel@tonic-gate */ 14207c478bd9Sstevel@tonic-gate if (fobj == 0) { 14217c478bd9Sstevel@tonic-gate if (dobj->co_flags & RTC_OBJ_ALLENTS) 14227c478bd9Sstevel@tonic-gate return (0); 14237c478bd9Sstevel@tonic-gate } else { 14247c478bd9Sstevel@tonic-gate if ((fobj->co_flags & (RTC_OBJ_NOEXIST | 14257c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 14267c478bd9Sstevel@tonic-gate return (0); 14277c478bd9Sstevel@tonic-gate 14287c478bd9Sstevel@tonic-gate if ((fobj->co_flags & RTC_OBJ_ALTER) && 14297c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && 14307c478bd9Sstevel@tonic-gate (lml == &lml_main)) { 14317c478bd9Sstevel@tonic-gate int ret; 14327c478bd9Sstevel@tonic-gate 14337c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 14347c478bd9Sstevel@tonic-gate /* 14357c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. 14367c478bd9Sstevel@tonic-gate * If this fails, and the alternative is 14377c478bd9Sstevel@tonic-gate * flagged as optional, fall through to 14387c478bd9Sstevel@tonic-gate * open the original path. 14397c478bd9Sstevel@tonic-gate */ 14407c478bd9Sstevel@tonic-gate ret = _find_file(lml, oname, alt, clmp, 14417c478bd9Sstevel@tonic-gate flags, fdesc, rej, dir, 1); 14427c478bd9Sstevel@tonic-gate if (ret || ((fobj->co_flags & 14437c478bd9Sstevel@tonic-gate RTC_OBJ_OPTINAL) == 0)) 14447c478bd9Sstevel@tonic-gate return (ret); 14457c478bd9Sstevel@tonic-gate 14467c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 14477c478bd9Sstevel@tonic-gate } 14487c478bd9Sstevel@tonic-gate } 14497c478bd9Sstevel@tonic-gate } 14507c478bd9Sstevel@tonic-gate } 14517c478bd9Sstevel@tonic-gate 14527c478bd9Sstevel@tonic-gate /* 14537c478bd9Sstevel@tonic-gate * Protect ourselves from building an invalid pathname. 14547c478bd9Sstevel@tonic-gate */ 14557c478bd9Sstevel@tonic-gate if ((olen + dir->p_len + 1) >= PATH_MAX) { 14565aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), nname, 14577c478bd9Sstevel@tonic-gate strerror(ENAMETOOLONG)); 14587c478bd9Sstevel@tonic-gate return (0); 14597c478bd9Sstevel@tonic-gate } 14607c478bd9Sstevel@tonic-gate if ((nname = (LM_GET_SO(clmp)(dir->p_name, nname))) == 0) 14617c478bd9Sstevel@tonic-gate return (0); 14627c478bd9Sstevel@tonic-gate 14637c478bd9Sstevel@tonic-gate return (_find_file(lml, oname, nname, clmp, flags, fdesc, rej, dir, 0)); 14647c478bd9Sstevel@tonic-gate } 14657c478bd9Sstevel@tonic-gate 14667c478bd9Sstevel@tonic-gate /* 14677c478bd9Sstevel@tonic-gate * A unique file has been opened. Create a link-map to represent it, and 14687c478bd9Sstevel@tonic-gate * process the various names by which it can be referenced. 14697c478bd9Sstevel@tonic-gate */ 14707c478bd9Sstevel@tonic-gate static Rt_map * 1471390b98b5Srie load_file(Lm_list *lml, Aliste lmco, Fdesc *fdesc) 14727c478bd9Sstevel@tonic-gate { 14737c478bd9Sstevel@tonic-gate const char *oname = fdesc->fd_oname; 14747c478bd9Sstevel@tonic-gate const char *nname = fdesc->fd_nname; 14757c478bd9Sstevel@tonic-gate Rt_map *nlmp; 14767c478bd9Sstevel@tonic-gate 14777c478bd9Sstevel@tonic-gate /* 14787c478bd9Sstevel@tonic-gate * Typically we call fct_map_so() with the full pathname of the opened 14797c478bd9Sstevel@tonic-gate * file (nname) and the name that started the search (oname), thus for 14807c478bd9Sstevel@tonic-gate * a typical dependency on libc this would be /usr/lib/libc.so.1 and 14817c478bd9Sstevel@tonic-gate * libc.so.1 (DT_NEEDED). The original name is maintained on an ALIAS 14827c478bd9Sstevel@tonic-gate * list for comparison when bringing in new dependencies. If the user 14837c478bd9Sstevel@tonic-gate * specified name as a full path (from a dlopen() for example) then 14847c478bd9Sstevel@tonic-gate * there's no need to create an ALIAS. 14857c478bd9Sstevel@tonic-gate */ 14867c478bd9Sstevel@tonic-gate if (strcmp(oname, nname) == 0) 14877c478bd9Sstevel@tonic-gate oname = 0; 14887c478bd9Sstevel@tonic-gate 14897c478bd9Sstevel@tonic-gate /* 14907c478bd9Sstevel@tonic-gate * A new file has been opened, now map it into the process. Close the 14917c478bd9Sstevel@tonic-gate * original file so as not to accumulate file descriptors. 14927c478bd9Sstevel@tonic-gate */ 14937c478bd9Sstevel@tonic-gate nlmp = ((fdesc->fd_ftp)->fct_map_so)(lml, lmco, nname, oname, 14947c478bd9Sstevel@tonic-gate fdesc->fd_fd); 14957c478bd9Sstevel@tonic-gate (void) close(fdesc->fd_fd); 14967c478bd9Sstevel@tonic-gate fdesc->fd_fd = 0; 14977c478bd9Sstevel@tonic-gate 14987c478bd9Sstevel@tonic-gate if (nlmp == 0) 14997c478bd9Sstevel@tonic-gate return (0); 15007c478bd9Sstevel@tonic-gate 15017c478bd9Sstevel@tonic-gate /* 15027c478bd9Sstevel@tonic-gate * Save the dev/inode information for later comparisons. 15037c478bd9Sstevel@tonic-gate */ 15047c478bd9Sstevel@tonic-gate STDEV(nlmp) = fdesc->fd_dev; 15057c478bd9Sstevel@tonic-gate STINO(nlmp) = fdesc->fd_ino; 15067c478bd9Sstevel@tonic-gate 15077c478bd9Sstevel@tonic-gate /* 15087c478bd9Sstevel@tonic-gate * Insert the names of this link-map into the FullpathNode AVL tree. 15097c478bd9Sstevel@tonic-gate * Save both the NAME() and PATHNAME() is they differ. 15107c478bd9Sstevel@tonic-gate * 15117c478bd9Sstevel@tonic-gate * If this is an OBJECT file, don't insert it yet as this is only a 15127c478bd9Sstevel@tonic-gate * temporary link-map. During elf_obj_fini() the final link-map is 15137c478bd9Sstevel@tonic-gate * created, and its names will be inserted in the FullpathNode AVL 15147c478bd9Sstevel@tonic-gate * tree at that time. 15157c478bd9Sstevel@tonic-gate */ 15167c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_OBJECT) == 0) { 15177c478bd9Sstevel@tonic-gate /* 15187c478bd9Sstevel@tonic-gate * Update the objects full path information if necessary. 151911a2bb38Srie * Note, with pathname expansion in effect, the fd_pname will 152011a2bb38Srie * be used as PATHNAME(). This allocated string will be freed 152111a2bb38Srie * should this object be deleted. However, without pathname 152211a2bb38Srie * expansion, the fd_name should be freed now, as it is no 152311a2bb38Srie * longer referenced. 15247c478bd9Sstevel@tonic-gate */ 152511a2bb38Srie if (FLAGS1(nlmp) & FL1_RT_RELATIVE) 15267c478bd9Sstevel@tonic-gate (void) fullpath(nlmp, fdesc->fd_pname); 152711a2bb38Srie else if (fdesc->fd_pname != fdesc->fd_nname) 152811a2bb38Srie free((void *)fdesc->fd_pname); 15297c478bd9Sstevel@tonic-gate fdesc->fd_pname = 0; 15307c478bd9Sstevel@tonic-gate 15317c478bd9Sstevel@tonic-gate if ((NAME(nlmp)[0] == '/') && (fpavl_insert(lml, nlmp, 15327c478bd9Sstevel@tonic-gate NAME(nlmp), fdesc->fd_avlwhere) == 0)) { 15337c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 15347c478bd9Sstevel@tonic-gate return (0); 15357c478bd9Sstevel@tonic-gate } 15367c478bd9Sstevel@tonic-gate if (((NAME(nlmp)[0] != '/') || 15377c478bd9Sstevel@tonic-gate (NAME(nlmp) != PATHNAME(nlmp))) && 15387c478bd9Sstevel@tonic-gate (fpavl_insert(lml, nlmp, PATHNAME(nlmp), 0) == 0)) { 15397c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 15407c478bd9Sstevel@tonic-gate return (0); 15417c478bd9Sstevel@tonic-gate } 15427c478bd9Sstevel@tonic-gate } 15437c478bd9Sstevel@tonic-gate 15447c478bd9Sstevel@tonic-gate /* 15457c478bd9Sstevel@tonic-gate * If we're processing an alternative object reset the original name 15467c478bd9Sstevel@tonic-gate * for possible $ORIGIN processing. 15477c478bd9Sstevel@tonic-gate */ 15487c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_ALTER) { 15497c478bd9Sstevel@tonic-gate const char *odir; 15507c478bd9Sstevel@tonic-gate char *ndir; 15517c478bd9Sstevel@tonic-gate size_t olen; 15527c478bd9Sstevel@tonic-gate 15537c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= FLG_RT_ALTER; 15547c478bd9Sstevel@tonic-gate 15557c478bd9Sstevel@tonic-gate /* 15567c478bd9Sstevel@tonic-gate * If we were given a pathname containing a slash then the 15577c478bd9Sstevel@tonic-gate * original name is still in oname. Otherwise the original 15587c478bd9Sstevel@tonic-gate * directory is in dir->p_name (which is all we need for 15597c478bd9Sstevel@tonic-gate * $ORIGIN). 15607c478bd9Sstevel@tonic-gate */ 15617c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_SLASH) { 15627c478bd9Sstevel@tonic-gate char *ofil; 15637c478bd9Sstevel@tonic-gate 15647c478bd9Sstevel@tonic-gate odir = oname; 15657c478bd9Sstevel@tonic-gate ofil = strrchr(oname, '/'); 15667c478bd9Sstevel@tonic-gate olen = ofil - odir + 1; 15677c478bd9Sstevel@tonic-gate } else { 15687c478bd9Sstevel@tonic-gate odir = fdesc->fd_odir; 15697c478bd9Sstevel@tonic-gate olen = strlen(odir) + 1; 15707c478bd9Sstevel@tonic-gate } 15717c478bd9Sstevel@tonic-gate 15727c478bd9Sstevel@tonic-gate if ((ndir = (char *)malloc(olen)) == 0) { 15737c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 15747c478bd9Sstevel@tonic-gate return (0); 15757c478bd9Sstevel@tonic-gate } 15767c478bd9Sstevel@tonic-gate (void) strncpy(ndir, odir, olen); 15777c478bd9Sstevel@tonic-gate ndir[--olen] = '\0'; 15787c478bd9Sstevel@tonic-gate 15797c478bd9Sstevel@tonic-gate ORIGNAME(nlmp) = ndir; 15807c478bd9Sstevel@tonic-gate DIRSZ(nlmp) = olen; 15817c478bd9Sstevel@tonic-gate } 15827c478bd9Sstevel@tonic-gate 15837c478bd9Sstevel@tonic-gate /* 1584390b98b5Srie * Identify this as a new object. 15857c478bd9Sstevel@tonic-gate */ 1586390b98b5Srie FLAGS(nlmp) |= FLG_RT_NEWLOAD; 15877c478bd9Sstevel@tonic-gate 15887c478bd9Sstevel@tonic-gate return (nlmp); 15897c478bd9Sstevel@tonic-gate } 15907c478bd9Sstevel@tonic-gate 15917c478bd9Sstevel@tonic-gate /* 15927c478bd9Sstevel@tonic-gate * This function loads the named file and returns a pointer to its link map. 15937c478bd9Sstevel@tonic-gate * It is assumed that the caller has already checked that the file is not 15947c478bd9Sstevel@tonic-gate * already loaded before calling this function (refer is_so_loaded()). 15957c478bd9Sstevel@tonic-gate * Find and open the file, map it into memory, add it to the end of the list 15967c478bd9Sstevel@tonic-gate * of link maps and return a pointer to the new link map. Return 0 on error. 15977c478bd9Sstevel@tonic-gate */ 15987c478bd9Sstevel@tonic-gate static Rt_map * 15997c478bd9Sstevel@tonic-gate load_so(Lm_list *lml, Aliste lmco, const char *oname, Rt_map *clmp, 1600fb1354edSrie uint_t flags, Fdesc *nfdp, Rej_desc *rej) 16017c478bd9Sstevel@tonic-gate { 16027c478bd9Sstevel@tonic-gate char *name; 16037c478bd9Sstevel@tonic-gate uint_t slash = 0; 16047c478bd9Sstevel@tonic-gate size_t olen; 1605fb1354edSrie Fdesc fdesc = { 0 }; 16067c478bd9Sstevel@tonic-gate Pnode *dir; 16077c478bd9Sstevel@tonic-gate 16087c478bd9Sstevel@tonic-gate /* 16097c478bd9Sstevel@tonic-gate * If the file is the run time linker then it's already loaded. 16107c478bd9Sstevel@tonic-gate */ 16117c478bd9Sstevel@tonic-gate if (interp && (strcmp(oname, NAME(lml_rtld.lm_head)) == 0)) 16127c478bd9Sstevel@tonic-gate return (lml_rtld.lm_head); 16137c478bd9Sstevel@tonic-gate 16147c478bd9Sstevel@tonic-gate /* 16157c478bd9Sstevel@tonic-gate * If this isn't a hardware capabilites pathname, which is already a 16167c478bd9Sstevel@tonic-gate * full, duplicated pathname, determine whether the pathname contains 16177c478bd9Sstevel@tonic-gate * a slash, and if not determine the input filename (for max path 16187c478bd9Sstevel@tonic-gate * length verification). 16197c478bd9Sstevel@tonic-gate */ 16207c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) == 0) { 16217c478bd9Sstevel@tonic-gate const char *str; 16227c478bd9Sstevel@tonic-gate 16237c478bd9Sstevel@tonic-gate for (str = oname; *str; str++) { 16247c478bd9Sstevel@tonic-gate if (*str == '/') { 16257c478bd9Sstevel@tonic-gate slash++; 16267c478bd9Sstevel@tonic-gate break; 16277c478bd9Sstevel@tonic-gate } 16287c478bd9Sstevel@tonic-gate } 16297c478bd9Sstevel@tonic-gate if (slash == 0) 16307c478bd9Sstevel@tonic-gate olen = (str - oname) + 1; 16317c478bd9Sstevel@tonic-gate } 16327c478bd9Sstevel@tonic-gate 16337c478bd9Sstevel@tonic-gate /* 16347c478bd9Sstevel@tonic-gate * If we are passed a 'null' link-map this means that this is the first 16357c478bd9Sstevel@tonic-gate * object to be loaded on this link-map list. In that case we set the 16367c478bd9Sstevel@tonic-gate * link-map to ld.so.1's link-map. 16377c478bd9Sstevel@tonic-gate * 16387c478bd9Sstevel@tonic-gate * This link-map is referenced to determine what lookup rules to use 16397c478bd9Sstevel@tonic-gate * when searching for files. By using ld.so.1's we are defaulting to 16407c478bd9Sstevel@tonic-gate * ELF look-up rules. 16417c478bd9Sstevel@tonic-gate * 16427c478bd9Sstevel@tonic-gate * Note: This case happens when loading the first object onto 16437c478bd9Sstevel@tonic-gate * the plt_tracing link-map. 16447c478bd9Sstevel@tonic-gate */ 16457c478bd9Sstevel@tonic-gate if (clmp == 0) 16467c478bd9Sstevel@tonic-gate clmp = lml_rtld.lm_head; 16477c478bd9Sstevel@tonic-gate 16487c478bd9Sstevel@tonic-gate /* 16497c478bd9Sstevel@tonic-gate * If this path resulted from a $HWCAP specification, then the best 16507c478bd9Sstevel@tonic-gate * hardware capability object has already been establish, and is 16517c478bd9Sstevel@tonic-gate * available in the calling file descriptor. Perform some minor book- 16527c478bd9Sstevel@tonic-gate * keeping so that we can fall through into common code. 16537c478bd9Sstevel@tonic-gate */ 16547c478bd9Sstevel@tonic-gate if (flags & FLG_RT_HWCAP) { 16557c478bd9Sstevel@tonic-gate /* 1656fb1354edSrie * If this object is already loaded, we're done. 16577c478bd9Sstevel@tonic-gate */ 1658fb1354edSrie if (nfdp->fd_lmp) 1659fb1354edSrie return (nfdp->fd_lmp); 16607c478bd9Sstevel@tonic-gate 16617c478bd9Sstevel@tonic-gate /* 16627c478bd9Sstevel@tonic-gate * Obtain the avl index for this object. 16637c478bd9Sstevel@tonic-gate */ 1664fb1354edSrie (void) fpavl_loaded(lml, nfdp->fd_nname, &(nfdp->fd_avlwhere)); 1665bbf522bdSrie 1666bbf522bdSrie /* 1667fb1354edSrie * If the name and resolved pathname differ, duplicate the path 1668fb1354edSrie * name once more to provide for genric cleanup by the caller. 1669bbf522bdSrie */ 1670fb1354edSrie if (nfdp->fd_pname && (nfdp->fd_nname != nfdp->fd_pname)) { 1671bbf522bdSrie char *pname; 1672bbf522bdSrie 1673fb1354edSrie if ((pname = strdup(nfdp->fd_pname)) == 0) 1674bbf522bdSrie return (0); 1675fb1354edSrie nfdp->fd_pname = pname; 1676bbf522bdSrie } 16777c478bd9Sstevel@tonic-gate } else if (slash) { 16787c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 16797c478bd9Sstevel@tonic-gate 1680fb1354edSrie *nfdp = fdesc; 1681fb1354edSrie nfdp->fd_flags = FLG_FD_SLASH; 16827c478bd9Sstevel@tonic-gate 1683fb1354edSrie if (find_path(lml, oname, clmp, flags, nfdp, &_rej) == 0) { 1684fb1354edSrie rejection_inherit(rej, &_rej, nfdp); 16857c478bd9Sstevel@tonic-gate return (0); 16867c478bd9Sstevel@tonic-gate } 16877c478bd9Sstevel@tonic-gate 16887c478bd9Sstevel@tonic-gate /* 16897c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 16907c478bd9Sstevel@tonic-gate */ 1691fb1354edSrie if (nfdp->fd_lmp) 1692fb1354edSrie return (nfdp->fd_lmp); 16937c478bd9Sstevel@tonic-gate 16947c478bd9Sstevel@tonic-gate } else { 16957c478bd9Sstevel@tonic-gate /* 16967c478bd9Sstevel@tonic-gate * No '/' - for each directory on list, make a pathname using 16977c478bd9Sstevel@tonic-gate * that directory and filename and try to open that file. 16987c478bd9Sstevel@tonic-gate */ 16997c478bd9Sstevel@tonic-gate Pnode *dirlist = (Pnode *)0; 17007c478bd9Sstevel@tonic-gate Word strhash = 0; 1701fb1354edSrie #if !defined(ISSOLOAD_BASENAME_DISABLED) 1702fb1354edSrie Rt_map *nlmp; 1703fb1354edSrie #endif 17045aefb655Srie DBG_CALL(Dbg_libs_find(lml, oname)); 17057c478bd9Sstevel@tonic-gate 17067c478bd9Sstevel@tonic-gate #if !defined(ISSOLOAD_BASENAME_DISABLED) 17077c478bd9Sstevel@tonic-gate if ((nlmp = is_so_loaded(lml, oname, 0))) 17087c478bd9Sstevel@tonic-gate return (nlmp); 17097c478bd9Sstevel@tonic-gate #endif 17107c478bd9Sstevel@tonic-gate /* 17117c478bd9Sstevel@tonic-gate * Make sure we clear the file descriptor new name in case the 17127c478bd9Sstevel@tonic-gate * following directory search doesn't provide any directories 17137c478bd9Sstevel@tonic-gate * (odd, but this can be forced with a -znodefaultlib test). 17147c478bd9Sstevel@tonic-gate */ 1715fb1354edSrie *nfdp = fdesc; 17167c478bd9Sstevel@tonic-gate for (dir = get_next_dir(&dirlist, clmp, flags); dir; 17177c478bd9Sstevel@tonic-gate dir = get_next_dir(&dirlist, clmp, flags)) { 17187c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 17197c478bd9Sstevel@tonic-gate 1720fb1354edSrie *nfdp = fdesc; 17217c478bd9Sstevel@tonic-gate 17227c478bd9Sstevel@tonic-gate /* 17237c478bd9Sstevel@tonic-gate * Try and locate this file. Make sure to clean up 17247c478bd9Sstevel@tonic-gate * any rejection information should the file have 17257c478bd9Sstevel@tonic-gate * been found, but not appropriate. 17267c478bd9Sstevel@tonic-gate */ 1727fb1354edSrie if (find_file(lml, oname, clmp, flags, nfdp, &_rej, 17287c478bd9Sstevel@tonic-gate dir, &strhash, olen) == 0) { 1729fb1354edSrie rejection_inherit(rej, &_rej, nfdp); 17307c478bd9Sstevel@tonic-gate continue; 17317c478bd9Sstevel@tonic-gate } 17327c478bd9Sstevel@tonic-gate 17337c478bd9Sstevel@tonic-gate /* 17347c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 17357c478bd9Sstevel@tonic-gate */ 1736fb1354edSrie if (nfdp->fd_lmp) 1737fb1354edSrie return (nfdp->fd_lmp); 17387c478bd9Sstevel@tonic-gate 1739fb1354edSrie nfdp->fd_odir = dir->p_name; 17407c478bd9Sstevel@tonic-gate break; 17417c478bd9Sstevel@tonic-gate } 17427c478bd9Sstevel@tonic-gate 17437c478bd9Sstevel@tonic-gate /* 17447c478bd9Sstevel@tonic-gate * If the file couldn't be loaded, do another comparison of 17457c478bd9Sstevel@tonic-gate * loaded files using just the basename. This catches folks 17467c478bd9Sstevel@tonic-gate * who may have loaded multiple full pathname files (possibly 17477c478bd9Sstevel@tonic-gate * from setxid applications) to satisfy dependency relationships 17487c478bd9Sstevel@tonic-gate * (i.e., a file might have a dependency on foo.so.1 which has 17497c478bd9Sstevel@tonic-gate * already been opened using its full pathname). 17507c478bd9Sstevel@tonic-gate */ 1751fb1354edSrie if (nfdp->fd_nname == 0) 17527c478bd9Sstevel@tonic-gate return (is_so_loaded(lml, oname, 1)); 17537c478bd9Sstevel@tonic-gate } 17547c478bd9Sstevel@tonic-gate 17557c478bd9Sstevel@tonic-gate /* 17567c478bd9Sstevel@tonic-gate * Duplicate the file name so that NAME() is available in core files. 17577c478bd9Sstevel@tonic-gate * Note, that hardware capability names are already duplicated, but 17587c478bd9Sstevel@tonic-gate * they get duplicated once more to insure consistent cleanup in the 17597c478bd9Sstevel@tonic-gate * event of an error condition. 17607c478bd9Sstevel@tonic-gate */ 1761fb1354edSrie if ((name = strdup(nfdp->fd_nname)) == 0) 17627c478bd9Sstevel@tonic-gate return (0); 1763fb1354edSrie 1764fb1354edSrie if (nfdp->fd_nname == nfdp->fd_pname) 1765fb1354edSrie nfdp->fd_nname = nfdp->fd_pname = name; 17667c478bd9Sstevel@tonic-gate else 1767fb1354edSrie nfdp->fd_nname = name; 17687c478bd9Sstevel@tonic-gate 17697c478bd9Sstevel@tonic-gate /* 17707c478bd9Sstevel@tonic-gate * Finish mapping the file and return the link-map descriptor. Note, 17717c478bd9Sstevel@tonic-gate * if this request originated from a HWCAP request, re-establish the 17727c478bd9Sstevel@tonic-gate * fdesc information. For single paged objects, such as filters, the 17737c478bd9Sstevel@tonic-gate * original mapping may have been sufficient to capture the file, thus 17747c478bd9Sstevel@tonic-gate * this mapping needs to be reset to insure it doesn't mistakenly get 17757c478bd9Sstevel@tonic-gate * unmapped as part of HWCAP cleanup. 17767c478bd9Sstevel@tonic-gate */ 1777fb1354edSrie return (load_file(lml, lmco, nfdp)); 17787c478bd9Sstevel@tonic-gate } 17797c478bd9Sstevel@tonic-gate 17807c478bd9Sstevel@tonic-gate /* 17817c478bd9Sstevel@tonic-gate * Trace an attempt to load an object. 17827c478bd9Sstevel@tonic-gate */ 17837c478bd9Sstevel@tonic-gate const char * 17847c478bd9Sstevel@tonic-gate load_trace(Lm_list *lml, const char *name, Rt_map *clmp) 17857c478bd9Sstevel@tonic-gate { 17867c478bd9Sstevel@tonic-gate /* 17877c478bd9Sstevel@tonic-gate * First generate any ldd(1) diagnostics. 17887c478bd9Sstevel@tonic-gate */ 17897c478bd9Sstevel@tonic-gate if ((lml->lm_flags & (LML_FLG_TRC_VERBOSE | LML_FLG_TRC_SEARCH)) && 17907c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) 17917c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, NAME(clmp)); 17927c478bd9Sstevel@tonic-gate 17937c478bd9Sstevel@tonic-gate /* 17947c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're 17957c478bd9Sstevel@tonic-gate * about to go search for. 17967c478bd9Sstevel@tonic-gate */ 17977c478bd9Sstevel@tonic-gate if (((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_ACTIVITY) && 17987c478bd9Sstevel@tonic-gate (lml == LIST(clmp))) 17997c478bd9Sstevel@tonic-gate audit_activity(clmp, LA_ACT_ADD); 18007c478bd9Sstevel@tonic-gate 18017c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 18027c478bd9Sstevel@tonic-gate char *_name; 18037c478bd9Sstevel@tonic-gate 18047c478bd9Sstevel@tonic-gate /* 18057c478bd9Sstevel@tonic-gate * The auditor can indicate that this object should be ignored. 18067c478bd9Sstevel@tonic-gate */ 18077c478bd9Sstevel@tonic-gate if ((_name = audit_objsearch(clmp, name, LA_SER_ORIG)) == 0) { 18085aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_GEN_AUDITERM), 18095aefb655Srie name); 18107c478bd9Sstevel@tonic-gate return (0); 18117c478bd9Sstevel@tonic-gate } 18127c478bd9Sstevel@tonic-gate 18137c478bd9Sstevel@tonic-gate /* 18147c478bd9Sstevel@tonic-gate * The auditor can provide an alternative name. 18157c478bd9Sstevel@tonic-gate */ 18167c478bd9Sstevel@tonic-gate if (_name != name) { 18177c478bd9Sstevel@tonic-gate free((void *)name); 18187c478bd9Sstevel@tonic-gate name = strdup(_name); 18197c478bd9Sstevel@tonic-gate } 18207c478bd9Sstevel@tonic-gate } 18217c478bd9Sstevel@tonic-gate return (name); 18227c478bd9Sstevel@tonic-gate } 18237c478bd9Sstevel@tonic-gate 18247c478bd9Sstevel@tonic-gate /* 18257c478bd9Sstevel@tonic-gate * Having loaded an object and created a link-map to describe it, finish 18267c478bd9Sstevel@tonic-gate * processing this stage, including verifying any versioning requirements, 18277c478bd9Sstevel@tonic-gate * updating the objects mode, creating a handle if necessary, and adding this 18287c478bd9Sstevel@tonic-gate * object to existing handles if required. 18297c478bd9Sstevel@tonic-gate */ 1830390b98b5Srie static int 18317c478bd9Sstevel@tonic-gate load_finish(Lm_list *lml, const char *name, Rt_map *clmp, int nmode, 18327c478bd9Sstevel@tonic-gate uint_t flags, Grp_hdl **hdl, Rt_map *nlmp) 18337c478bd9Sstevel@tonic-gate { 18347c478bd9Sstevel@tonic-gate Aliste off; 18357c478bd9Sstevel@tonic-gate Grp_hdl *ghp, **ghpp; 18367c478bd9Sstevel@tonic-gate int promote; 18377c478bd9Sstevel@tonic-gate 18387c478bd9Sstevel@tonic-gate /* 18397c478bd9Sstevel@tonic-gate * If this dependency is associated with a required version insure that 18407c478bd9Sstevel@tonic-gate * the version is present in the loaded file. 18417c478bd9Sstevel@tonic-gate */ 18427c478bd9Sstevel@tonic-gate if (((rtld_flags & RT_FL_NOVERSION) == 0) && 18437c478bd9Sstevel@tonic-gate (FCT(clmp) == &elf_fct) && VERNEED(clmp) && 18447c478bd9Sstevel@tonic-gate (LM_VERIFY_VERS(clmp)(name, clmp, nlmp) == 0)) 18457c478bd9Sstevel@tonic-gate return (0); 18467c478bd9Sstevel@tonic-gate 18477c478bd9Sstevel@tonic-gate /* 18487c478bd9Sstevel@tonic-gate * If this object has indicated that it should be isolated as a group 18497c478bd9Sstevel@tonic-gate * (DT_FLAGS_1 contains DF_1_GROUP - object was built with -B group), 18507c478bd9Sstevel@tonic-gate * or if the callers direct bindings indicate it should be isolated as 18517c478bd9Sstevel@tonic-gate * a group (DYNINFO flags contains FLG_DI_GROUP - dependency followed 18527c478bd9Sstevel@tonic-gate * -zgroupperm), establish the appropriate mode. 18537c478bd9Sstevel@tonic-gate * 18547c478bd9Sstevel@tonic-gate * The intent of an object defining itself as a group is to isolate the 18557c478bd9Sstevel@tonic-gate * relocation of the group within its own members, however, unless 18567c478bd9Sstevel@tonic-gate * opened through dlopen(), in which case we assume dlsym() will be used 18577c478bd9Sstevel@tonic-gate * to located symbols in the new object, we still need to associate it 18587c478bd9Sstevel@tonic-gate * with the caller for it to be bound with. This is equivalent to a 18597c478bd9Sstevel@tonic-gate * dlopen(RTLD_GROUP) and dlsym() using the returned handle. 18607c478bd9Sstevel@tonic-gate */ 18617c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) | flags) & FLG_RT_SETGROUP) { 18627c478bd9Sstevel@tonic-gate nmode &= ~RTLD_WORLD; 18637c478bd9Sstevel@tonic-gate nmode |= RTLD_GROUP; 18647c478bd9Sstevel@tonic-gate 18657c478bd9Sstevel@tonic-gate /* 18667c478bd9Sstevel@tonic-gate * If the object wasn't explicitly dlopen()'ed associate it with 18677c478bd9Sstevel@tonic-gate * the parent. 18687c478bd9Sstevel@tonic-gate */ 18699a411307Srie if ((flags & FLG_RT_HANDLE) == 0) 18707c478bd9Sstevel@tonic-gate nmode |= RTLD_PARENT; 18717c478bd9Sstevel@tonic-gate } 18727c478bd9Sstevel@tonic-gate 18737c478bd9Sstevel@tonic-gate /* 18747c478bd9Sstevel@tonic-gate * Establish new mode and flags. 18757c478bd9Sstevel@tonic-gate * 18767c478bd9Sstevel@tonic-gate * For patch backward compatibility, the following use of update_mode() 18777c478bd9Sstevel@tonic-gate * is disabled. 18787c478bd9Sstevel@tonic-gate */ 18797c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 18807c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 18817c478bd9Sstevel@tonic-gate promote = MODE(nlmp) |= 18827c478bd9Sstevel@tonic-gate (nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST)); 18837c478bd9Sstevel@tonic-gate else 18847c478bd9Sstevel@tonic-gate #endif 18857c478bd9Sstevel@tonic-gate promote = update_mode(nlmp, MODE(nlmp), nmode); 18867c478bd9Sstevel@tonic-gate 18877c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= flags; 18887c478bd9Sstevel@tonic-gate 18897c478bd9Sstevel@tonic-gate /* 18902926dd2eSrie * If this is a global object, ensure the associated link-map list can 18912926dd2eSrie * be rescanned for global, lazy dependencies. 18922926dd2eSrie */ 18932926dd2eSrie if (MODE(nlmp) & RTLD_GLOBAL) 18942926dd2eSrie LIST(nlmp)->lm_flags &= ~LML_FLG_NOPENDGLBLAZY; 18952926dd2eSrie 18962926dd2eSrie /* 18977c478bd9Sstevel@tonic-gate * If we've been asked to establish a handle create one for this object. 18987c478bd9Sstevel@tonic-gate * Or, if this object has already been analyzed, but this reference 18997c478bd9Sstevel@tonic-gate * requires that the mode of the object be promoted, also create a 19007c478bd9Sstevel@tonic-gate * handle to propagate the new modes to all this objects dependencies. 19017c478bd9Sstevel@tonic-gate */ 19027c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) | flags) & FLG_RT_HANDLE) || (promote && 19037c478bd9Sstevel@tonic-gate (FLAGS(nlmp) & FLG_RT_ANALYZED))) { 19047c478bd9Sstevel@tonic-gate uint_t oflags, hflags = 0; 19057c478bd9Sstevel@tonic-gate 19067c478bd9Sstevel@tonic-gate if (nmode & RTLD_PARENT) 19077c478bd9Sstevel@tonic-gate hflags |= GPH_PARENT; 19087c478bd9Sstevel@tonic-gate if (nmode & RTLD_FIRST) 19097c478bd9Sstevel@tonic-gate hflags |= GPH_FIRST; 19107c478bd9Sstevel@tonic-gate 19117c478bd9Sstevel@tonic-gate /* 19127c478bd9Sstevel@tonic-gate * Now that a handle is being created, remove this state from 19137c478bd9Sstevel@tonic-gate * the object so that it doesn't mistakenly get inherited by 19147c478bd9Sstevel@tonic-gate * a dependency. 19157c478bd9Sstevel@tonic-gate */ 19167c478bd9Sstevel@tonic-gate oflags = FLAGS(nlmp); 19177c478bd9Sstevel@tonic-gate FLAGS(nlmp) &= ~FLG_RT_HANDLE; 19187c478bd9Sstevel@tonic-gate 19197c478bd9Sstevel@tonic-gate if ((ghp = hdl_create(lml, nlmp, clmp, hflags)) == 0) 19207c478bd9Sstevel@tonic-gate return (0); 19217c478bd9Sstevel@tonic-gate 19227c478bd9Sstevel@tonic-gate /* 19237c478bd9Sstevel@tonic-gate * Add any dependencies that are already loaded, to the handle. 19247c478bd9Sstevel@tonic-gate */ 19257c478bd9Sstevel@tonic-gate if (hdl_initialize(ghp, nlmp, clmp, nmode, promote) == 0) 19267c478bd9Sstevel@tonic-gate return (0); 19277c478bd9Sstevel@tonic-gate 19287c478bd9Sstevel@tonic-gate if (hdl) 19297c478bd9Sstevel@tonic-gate *hdl = ghp; 19307c478bd9Sstevel@tonic-gate 19317c478bd9Sstevel@tonic-gate /* 19327c478bd9Sstevel@tonic-gate * If we were asked to create a handle, we're done. Otherwise, 19337c478bd9Sstevel@tonic-gate * remove the handle. The handle was only used to establish this 19347c478bd9Sstevel@tonic-gate * objects dependencies and promote any modes, so we don't want 19357c478bd9Sstevel@tonic-gate * this handle preventing the objects deletion. Fall through to 19367c478bd9Sstevel@tonic-gate * carry out any group processing. 19377c478bd9Sstevel@tonic-gate */ 19387c478bd9Sstevel@tonic-gate if ((oflags | flags) & FLG_RT_HANDLE) 19397c478bd9Sstevel@tonic-gate return (1); 19407c478bd9Sstevel@tonic-gate 19417c478bd9Sstevel@tonic-gate free_hdl(ghp); 19427c478bd9Sstevel@tonic-gate } 19437c478bd9Sstevel@tonic-gate 19447c478bd9Sstevel@tonic-gate /* 19457c478bd9Sstevel@tonic-gate * If the caller isn't part of a group we're done. 19467c478bd9Sstevel@tonic-gate */ 19477c478bd9Sstevel@tonic-gate if (GROUPS(clmp) == 0) 19487c478bd9Sstevel@tonic-gate return (1); 19497c478bd9Sstevel@tonic-gate 19507c478bd9Sstevel@tonic-gate /* 19517c478bd9Sstevel@tonic-gate * Determine if our caller is already associated with a handle, if so 19527c478bd9Sstevel@tonic-gate * we need to add this object to any handles that already exist. 19537c478bd9Sstevel@tonic-gate * Traverse the list of groups our caller is a member of and add this 19547c478bd9Sstevel@tonic-gate * new link-map to those groups. 19557c478bd9Sstevel@tonic-gate */ 19567c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_hdl_title(DBG_DEP_ADD)); 19577c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(GROUPS(clmp), off, ghpp)) { 19587c478bd9Sstevel@tonic-gate Aliste off1; 19597c478bd9Sstevel@tonic-gate Grp_desc *gdp; 19607c478bd9Sstevel@tonic-gate int exist; 19617c478bd9Sstevel@tonic-gate Rt_map **lmpp; 19627c478bd9Sstevel@tonic-gate Alist *lmalp = 0; 19637c478bd9Sstevel@tonic-gate 19647c478bd9Sstevel@tonic-gate ghp = *ghpp; 19657c478bd9Sstevel@tonic-gate 19667c478bd9Sstevel@tonic-gate /* 19677c478bd9Sstevel@tonic-gate * If the caller doesn't indicate that its dependencies should 19687c478bd9Sstevel@tonic-gate * be added to a handle, ignore it. This case identifies a 19697c478bd9Sstevel@tonic-gate * parent of a dlopen(RTLD_PARENT) request. 19707c478bd9Sstevel@tonic-gate */ 19717c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(ghp->gh_depends, off1, gdp)) { 19727c478bd9Sstevel@tonic-gate if (gdp->gd_depend == clmp) 19737c478bd9Sstevel@tonic-gate break; 19747c478bd9Sstevel@tonic-gate } 19757c478bd9Sstevel@tonic-gate if ((gdp->gd_flags & GPD_ADDEPS) == 0) 19767c478bd9Sstevel@tonic-gate continue; 19777c478bd9Sstevel@tonic-gate 19787c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, nlmp, 19797c478bd9Sstevel@tonic-gate (GPD_AVAIL | GPD_ADDEPS))) == 0) 19807c478bd9Sstevel@tonic-gate return (0); 19817c478bd9Sstevel@tonic-gate 19827c478bd9Sstevel@tonic-gate /* 19837c478bd9Sstevel@tonic-gate * If this member already exists then its dependencies will 19847c478bd9Sstevel@tonic-gate * have already been processed. 19857c478bd9Sstevel@tonic-gate */ 19867c478bd9Sstevel@tonic-gate if (exist == ALE_EXISTS) 19877c478bd9Sstevel@tonic-gate continue; 19887c478bd9Sstevel@tonic-gate 19897c478bd9Sstevel@tonic-gate /* 19907c478bd9Sstevel@tonic-gate * If the object we've added has just been opened, it will not 19917c478bd9Sstevel@tonic-gate * yet have been processed for its dependencies, these will be 19927c478bd9Sstevel@tonic-gate * added on later calls to load_one(). If it doesn't have any 19937c478bd9Sstevel@tonic-gate * dependencies we're also done. 19947c478bd9Sstevel@tonic-gate */ 19957c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) || 19967c478bd9Sstevel@tonic-gate (DEPENDS(nlmp) == 0)) 19977c478bd9Sstevel@tonic-gate continue; 19987c478bd9Sstevel@tonic-gate 19997c478bd9Sstevel@tonic-gate /* 20007c478bd9Sstevel@tonic-gate * Otherwise, this object exists and has dependencies, so add 20017c478bd9Sstevel@tonic-gate * all of its dependencies to the handle were operating on. 20027c478bd9Sstevel@tonic-gate */ 20037c478bd9Sstevel@tonic-gate if (alist_append(&lmalp, &nlmp, sizeof (Rt_map *), 20047c478bd9Sstevel@tonic-gate AL_CNT_DEPCLCT) == 0) 20057c478bd9Sstevel@tonic-gate return (0); 20067c478bd9Sstevel@tonic-gate 20077c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(lmalp, off1, lmpp)) { 20087c478bd9Sstevel@tonic-gate Rt_map * dlmp1 = *lmpp; 20097c478bd9Sstevel@tonic-gate Aliste off2; 20107c478bd9Sstevel@tonic-gate Bnd_desc ** bdpp; 20117c478bd9Sstevel@tonic-gate 20127c478bd9Sstevel@tonic-gate /* 20137c478bd9Sstevel@tonic-gate * Add any dependencies of this dependency to the 20147c478bd9Sstevel@tonic-gate * dynamic dependency list so they can be further 20157c478bd9Sstevel@tonic-gate * processed. 20167c478bd9Sstevel@tonic-gate */ 20177c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(DEPENDS(dlmp1), off2, bdpp)) { 20187c478bd9Sstevel@tonic-gate Bnd_desc * bdp = *bdpp; 20197c478bd9Sstevel@tonic-gate Rt_map * dlmp2 = bdp->b_depend; 20207c478bd9Sstevel@tonic-gate 20217c478bd9Sstevel@tonic-gate if ((bdp->b_flags & BND_NEEDED) == 0) 20227c478bd9Sstevel@tonic-gate continue; 20237c478bd9Sstevel@tonic-gate 20247c478bd9Sstevel@tonic-gate if (alist_test(&lmalp, dlmp2, sizeof (Rt_map *), 20257c478bd9Sstevel@tonic-gate AL_CNT_DEPCLCT) == 0) { 20267c478bd9Sstevel@tonic-gate free(lmalp); 20277c478bd9Sstevel@tonic-gate return (0); 20287c478bd9Sstevel@tonic-gate } 20297c478bd9Sstevel@tonic-gate } 20307c478bd9Sstevel@tonic-gate 20317c478bd9Sstevel@tonic-gate if (nlmp == dlmp1) 20327c478bd9Sstevel@tonic-gate continue; 20337c478bd9Sstevel@tonic-gate 20347c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, dlmp1, 20357c478bd9Sstevel@tonic-gate (GPD_AVAIL | GPD_ADDEPS))) != 0) { 20367c478bd9Sstevel@tonic-gate if (exist == ALE_CREATE) 20377c478bd9Sstevel@tonic-gate (void) update_mode(dlmp1, MODE(dlmp1), 20387c478bd9Sstevel@tonic-gate nmode); 20397c478bd9Sstevel@tonic-gate continue; 20407c478bd9Sstevel@tonic-gate } 20417c478bd9Sstevel@tonic-gate free(lmalp); 20427c478bd9Sstevel@tonic-gate return (0); 20437c478bd9Sstevel@tonic-gate } 20447c478bd9Sstevel@tonic-gate free(lmalp); 20457c478bd9Sstevel@tonic-gate } 20467c478bd9Sstevel@tonic-gate return (1); 20477c478bd9Sstevel@tonic-gate } 20487c478bd9Sstevel@tonic-gate 20497c478bd9Sstevel@tonic-gate /* 20507c478bd9Sstevel@tonic-gate * The central routine for loading shared objects. Insures ldd() diagnostics, 20517c478bd9Sstevel@tonic-gate * handles and any other related additions are all done in one place. 20527c478bd9Sstevel@tonic-gate */ 2053fb1354edSrie static Rt_map * 2054fb1354edSrie _load_path(Lm_list *lml, Aliste lmco, const char *name, Rt_map *clmp, 2055fb1354edSrie int nmode, uint_t flags, Grp_hdl ** hdl, Fdesc *nfdp, Rej_desc *rej) 20567c478bd9Sstevel@tonic-gate { 20577c478bd9Sstevel@tonic-gate Rt_map *nlmp; 20587c478bd9Sstevel@tonic-gate 20597c478bd9Sstevel@tonic-gate if ((nmode & RTLD_NOLOAD) == 0) { 20607c478bd9Sstevel@tonic-gate /* 20617c478bd9Sstevel@tonic-gate * If this isn't a noload request attempt to load the file. 20627c478bd9Sstevel@tonic-gate */ 20637c478bd9Sstevel@tonic-gate if ((name = load_trace(lml, name, clmp)) == 0) 20647c478bd9Sstevel@tonic-gate return (0); 20657c478bd9Sstevel@tonic-gate 20667c478bd9Sstevel@tonic-gate if ((nlmp = load_so(lml, lmco, name, clmp, flags, 2067fb1354edSrie nfdp, rej)) == 0) 20687c478bd9Sstevel@tonic-gate return (0); 20697c478bd9Sstevel@tonic-gate 20707c478bd9Sstevel@tonic-gate /* 20717c478bd9Sstevel@tonic-gate * If we've loaded a library which identifies itself as not 20727c478bd9Sstevel@tonic-gate * being dlopen()'able catch it here. Let non-dlopen()'able 20737c478bd9Sstevel@tonic-gate * objects through under RTLD_CONFGEN as they're only being 20747c478bd9Sstevel@tonic-gate * mapped to be dldump()'ed. 20757c478bd9Sstevel@tonic-gate */ 20767c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_APPLIC) && ((FLAGS(nlmp) & 20777c478bd9Sstevel@tonic-gate (FLG_RT_NOOPEN | FLG_RT_RELOCED)) == FLG_RT_NOOPEN) && 20787c478bd9Sstevel@tonic-gate ((nmode & RTLD_CONFGEN) == 0)) { 20797c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 20807c478bd9Sstevel@tonic-gate 20817c478bd9Sstevel@tonic-gate _rej.rej_name = name; 20827c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 20837c478bd9Sstevel@tonic-gate _rej.rej_str = MSG_INTL(MSG_GEN_NOOPEN); 20845aefb655Srie DBG_CALL(Dbg_file_rejected(lml, &_rej)); 2085fb1354edSrie rejection_inherit(rej, &_rej, nfdp); 20867c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 20877c478bd9Sstevel@tonic-gate return (0); 20887c478bd9Sstevel@tonic-gate } 20897c478bd9Sstevel@tonic-gate } else { 20907c478bd9Sstevel@tonic-gate /* 20917c478bd9Sstevel@tonic-gate * If it's a NOLOAD request - check to see if the object 20927c478bd9Sstevel@tonic-gate * has already been loaded. 20937c478bd9Sstevel@tonic-gate */ 20947c478bd9Sstevel@tonic-gate /* LINTED */ 20957c478bd9Sstevel@tonic-gate if ((nlmp = is_so_loaded(lml, name, 0)) || 20967c478bd9Sstevel@tonic-gate (nlmp = is_so_loaded(lml, name, 1))) { 20977c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_VERBOSE) && 20987c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 20997c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, 21007c478bd9Sstevel@tonic-gate NAME(clmp)); 21017c478bd9Sstevel@tonic-gate if (*name == '/') 21027c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 21037c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 21047c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 21057c478bd9Sstevel@tonic-gate else 21067c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 21077c478bd9Sstevel@tonic-gate name, NAME(nlmp), 21087c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 21097c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 21107c478bd9Sstevel@tonic-gate } 21117c478bd9Sstevel@tonic-gate } else { 21127c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 21137c478bd9Sstevel@tonic-gate 21147c478bd9Sstevel@tonic-gate _rej.rej_name = name; 21157c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 21167c478bd9Sstevel@tonic-gate _rej.rej_str = strerror(ENOENT); 21175aefb655Srie DBG_CALL(Dbg_file_rejected(lml, &_rej)); 2118fb1354edSrie rejection_inherit(rej, &_rej, nfdp); 21197c478bd9Sstevel@tonic-gate return (0); 21207c478bd9Sstevel@tonic-gate } 21217c478bd9Sstevel@tonic-gate } 21227c478bd9Sstevel@tonic-gate 21237c478bd9Sstevel@tonic-gate /* 21247c478bd9Sstevel@tonic-gate * Finish processing this loaded object. 21257c478bd9Sstevel@tonic-gate */ 2126390b98b5Srie if (load_finish(lml, name, clmp, nmode, flags, hdl, nlmp) == 0) { 2127390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 21287c478bd9Sstevel@tonic-gate 21297c478bd9Sstevel@tonic-gate /* 2130390b98b5Srie * If this object has already been analyzed, then it is in use, 2131390b98b5Srie * so even though this operation has failed, it should not be 2132390b98b5Srie * torn down. 21337c478bd9Sstevel@tonic-gate */ 21347c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) 21357c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 21367c478bd9Sstevel@tonic-gate return (0); 21377c478bd9Sstevel@tonic-gate } 21387c478bd9Sstevel@tonic-gate 21397c478bd9Sstevel@tonic-gate /* 2140390b98b5Srie * If this object is new, and we're being audited, tell the audit 2141390b98b5Srie * library of the file we've just opened. Note, if the new link-map 2142390b98b5Srie * requires local auditing of its dependencies we also register its 2143390b98b5Srie * opening. 2144390b98b5Srie */ 2145390b98b5Srie if (FLAGS(nlmp) & FLG_RT_NEWLOAD) { 2146390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 2147390b98b5Srie 2148390b98b5Srie if (((lml->lm_tflags | FLAGS1(clmp) | FLAGS1(nlmp)) & 2149390b98b5Srie LML_TFLG_AUD_MASK) && (((lml->lm_flags | 2150390b98b5Srie LIST(clmp)->lm_flags) & LML_FLG_NOAUDIT) == 0)) { 2151390b98b5Srie if (audit_objopen(clmp, nlmp) == 0) { 2152390b98b5Srie remove_so(lml, nlmp); 2153390b98b5Srie return (0); 2154390b98b5Srie } 2155390b98b5Srie } 2156390b98b5Srie } 2157390b98b5Srie return (nlmp); 2158390b98b5Srie } 2159390b98b5Srie 2160fb1354edSrie Rt_map * 2161fb1354edSrie load_path(Lm_list *lml, Aliste lmco, const char *name, Rt_map *clmp, 2162fb1354edSrie int nmode, uint_t flags, Grp_hdl **hdl, Fdesc *cfdp, Rej_desc *rej) 2163fb1354edSrie { 2164fb1354edSrie Rt_map *lmp; 2165fb1354edSrie Fdesc nfdp = { 0 }; 2166fb1354edSrie 2167fb1354edSrie /* 2168fb1354edSrie * If this path resulted from a $HWCAP specification, then the best 2169fb1354edSrie * hardware capability object has already been establish, and is 2170fb1354edSrie * available in the calling file descriptor. 2171fb1354edSrie */ 2172fb1354edSrie if (flags & FLG_RT_HWCAP) { 2173fb1354edSrie if (cfdp->fd_lmp == 0) { 2174fb1354edSrie /* 2175fb1354edSrie * If this object hasn't yet been mapped, re-establish 2176fb1354edSrie * the file descriptor structure to reflect this objects 2177fb1354edSrie * original initial page mapping. Make sure any present 2178fb1354edSrie * file descriptor mapping is removed before overwriting 2179fb1354edSrie * the structure. 2180fb1354edSrie */ 2181fb1354edSrie #if defined(MAP_ALIGN) 2182fb1354edSrie if (fmap->fm_maddr && 2183fb1354edSrie ((fmap->fm_mflags & MAP_ALIGN) == 0)) 2184fb1354edSrie #else 2185fb1354edSrie if (fmap->fm_maddr) 2186fb1354edSrie #endif 2187fb1354edSrie (void) munmap(fmap->fm_maddr, fmap->fm_msize); 2188fb1354edSrie } 2189fb1354edSrie nfdp = *cfdp; 2190fb1354edSrie *fmap = cfdp->fd_fmap; 2191fb1354edSrie } 2192fb1354edSrie 2193fb1354edSrie lmp = _load_path(lml, lmco, name, clmp, nmode, flags, hdl, &nfdp, rej); 2194fb1354edSrie 2195fb1354edSrie /* 2196fb1354edSrie * If this path originated from a $HWCAP specification, re-establish the 2197fb1354edSrie * fdesc information. For single paged objects, such as filters, the 2198fb1354edSrie * original mapping may have been sufficient to capture the file, thus 2199fb1354edSrie * this mapping needs to be reset to insure it doesn't mistakenly get 2200fb1354edSrie * unmapped as part of HWCAP cleanup. 2201fb1354edSrie */ 2202fb1354edSrie if (flags & FLG_RT_HWCAP) { 2203fb1354edSrie cfdp->fd_fmap.fm_maddr = fmap->fm_maddr; 2204fb1354edSrie cfdp->fd_fmap.fm_mflags = fmap->fm_mflags; 2205fb1354edSrie cfdp->fd_fd = nfdp.fd_fd; 2206fb1354edSrie } 2207fb1354edSrie 2208fb1354edSrie return (lmp); 2209fb1354edSrie } 2210fb1354edSrie 2211390b98b5Srie /* 22127c478bd9Sstevel@tonic-gate * Load one object from a possible list of objects. Typically, for requests 22137c478bd9Sstevel@tonic-gate * such as NEEDED's, only one object is specified. However, this object could 22147c478bd9Sstevel@tonic-gate * be specified using $ISALIST or $HWCAP, in which case only the first object 22157c478bd9Sstevel@tonic-gate * that can be loaded is used (ie. the best). 22167c478bd9Sstevel@tonic-gate */ 22177c478bd9Sstevel@tonic-gate Rt_map * 22187c478bd9Sstevel@tonic-gate load_one(Lm_list *lml, Aliste lmco, Pnode *pnp, Rt_map *clmp, int mode, 22197c478bd9Sstevel@tonic-gate uint_t flags, Grp_hdl ** hdl) 22207c478bd9Sstevel@tonic-gate { 22217c478bd9Sstevel@tonic-gate Rej_desc rej = { 0 }; 22227c478bd9Sstevel@tonic-gate Pnode *tpnp; 22237c478bd9Sstevel@tonic-gate const char *name; 22247c478bd9Sstevel@tonic-gate Rt_map *tlmp; 22257c478bd9Sstevel@tonic-gate 22267c478bd9Sstevel@tonic-gate for (tpnp = pnp; tpnp && tpnp->p_name; tpnp = tpnp->p_next) { 22277c478bd9Sstevel@tonic-gate /* 22287c478bd9Sstevel@tonic-gate * A Hardware capabilities requirement can itself expand into 22297c478bd9Sstevel@tonic-gate * a number of candidates. 22307c478bd9Sstevel@tonic-gate */ 22317c478bd9Sstevel@tonic-gate if (tpnp->p_orig & PN_TKN_HWCAP) { 22327c478bd9Sstevel@tonic-gate if ((tlmp = load_hwcap(lml, lmco, tpnp->p_name, clmp, 22337c478bd9Sstevel@tonic-gate mode, (flags | FLG_RT_HWCAP), hdl, &rej)) != 0) { 22347c478bd9Sstevel@tonic-gate remove_rej(&rej); 22357c478bd9Sstevel@tonic-gate return (tlmp); 22367c478bd9Sstevel@tonic-gate } 22377c478bd9Sstevel@tonic-gate } else { 22387c478bd9Sstevel@tonic-gate if ((tlmp = load_path(lml, lmco, tpnp->p_name, clmp, 22397c478bd9Sstevel@tonic-gate mode, flags, hdl, 0, &rej)) != 0) { 22407c478bd9Sstevel@tonic-gate remove_rej(&rej); 22417c478bd9Sstevel@tonic-gate return (tlmp); 22427c478bd9Sstevel@tonic-gate } 22437c478bd9Sstevel@tonic-gate } 22447c478bd9Sstevel@tonic-gate } 22457c478bd9Sstevel@tonic-gate 22467c478bd9Sstevel@tonic-gate /* 22477c478bd9Sstevel@tonic-gate * If this pathname originated from an expanded token, use the original 22487c478bd9Sstevel@tonic-gate * for any diagnostic output. 22497c478bd9Sstevel@tonic-gate */ 22507c478bd9Sstevel@tonic-gate if ((name = pnp->p_oname) == 0) 22517c478bd9Sstevel@tonic-gate name = pnp->p_name; 22527c478bd9Sstevel@tonic-gate 22537c478bd9Sstevel@tonic-gate file_notfound(lml, name, clmp, flags, &rej); 22547c478bd9Sstevel@tonic-gate remove_rej(&rej); 22557c478bd9Sstevel@tonic-gate return (0); 22567c478bd9Sstevel@tonic-gate } 22577c478bd9Sstevel@tonic-gate 22587c478bd9Sstevel@tonic-gate /* 22599a411307Srie * Determine whether a symbol is defined as an interposer. 22609a411307Srie */ 22619a411307Srie int 22629a411307Srie is_sym_interposer(Rt_map *lmp, Sym *sym) 22639a411307Srie { 22649a411307Srie Syminfo *sip = SYMINFO(lmp); 22659a411307Srie 22669a411307Srie if (sip) { 22679a411307Srie ulong_t ndx; 22689a411307Srie 22699a411307Srie ndx = (((ulong_t)sym - (ulong_t)SYMTAB(lmp)) / SYMENT(lmp)); 22709a411307Srie /* LINTED */ 22719a411307Srie sip = (Syminfo *)((char *)sip + (ndx * SYMINENT(lmp))); 22729a411307Srie if (sip->si_flags & SYMINFO_FLG_INTERPOSE) 22739a411307Srie return (1); 22749a411307Srie } 22759a411307Srie return (0); 22769a411307Srie } 22779a411307Srie 22789a411307Srie /* 22797c478bd9Sstevel@tonic-gate * While processing direct or group bindings, determine whether the object to 22807c478bd9Sstevel@tonic-gate * which we've bound can be interposed upon. In this context, copy relocations 22817c478bd9Sstevel@tonic-gate * are a form of interposition. 22827c478bd9Sstevel@tonic-gate */ 22837c478bd9Sstevel@tonic-gate static Sym * 22847c478bd9Sstevel@tonic-gate lookup_sym_interpose(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Lm_list *lml, 22857c478bd9Sstevel@tonic-gate Sym *sym) 22867c478bd9Sstevel@tonic-gate { 22877c478bd9Sstevel@tonic-gate Rt_map *lmp; 22887c478bd9Sstevel@tonic-gate Slookup sl; 22897c478bd9Sstevel@tonic-gate 22907c478bd9Sstevel@tonic-gate /* 22917c478bd9Sstevel@tonic-gate * If we've bound to a copy relocation definition then we need to assign 22927c478bd9Sstevel@tonic-gate * this binding to the original copy reference. Fabricate an inter- 22937c478bd9Sstevel@tonic-gate * position diagnostic, as this is a legitimate form of interposition. 22947c478bd9Sstevel@tonic-gate */ 22957c478bd9Sstevel@tonic-gate if (FLAGS1(*dlmp) & FL1_RT_COPYTOOK) { 22967c478bd9Sstevel@tonic-gate Rel_copy *rcp; 22977c478bd9Sstevel@tonic-gate Aliste off; 22987c478bd9Sstevel@tonic-gate 22997c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(COPY(*dlmp), off, rcp)) { 23007c478bd9Sstevel@tonic-gate if ((sym == rcp->r_dsym) || (sym->st_value && 23017c478bd9Sstevel@tonic-gate (sym->st_value == rcp->r_dsym->st_value))) { 23027c478bd9Sstevel@tonic-gate *dlmp = rcp->r_rlmp; 23037c478bd9Sstevel@tonic-gate *binfo |= 23047c478bd9Sstevel@tonic-gate (DBG_BINFO_INTERPOSE | DBG_BINFO_COPYREF); 23057c478bd9Sstevel@tonic-gate return (rcp->r_rsym); 23067c478bd9Sstevel@tonic-gate } 23077c478bd9Sstevel@tonic-gate } 23087c478bd9Sstevel@tonic-gate } 23097c478bd9Sstevel@tonic-gate 23107c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_INTRPOSE) == 0) 23117c478bd9Sstevel@tonic-gate return ((Sym *)0); 23127c478bd9Sstevel@tonic-gate 23137c478bd9Sstevel@tonic-gate /* 23147c478bd9Sstevel@tonic-gate * Traverse the list of known interposers to determine whether any 23157c478bd9Sstevel@tonic-gate * offer the same symbol. Note, the head of the link-map could be 23167c478bd9Sstevel@tonic-gate * identified as an interposer. If it is, make sure we only look for 23177c478bd9Sstevel@tonic-gate * symbol definitions. Otherwise, skip the head of the link-map, so 23187c478bd9Sstevel@tonic-gate * that we don't bind to any .plt references, or copy-relocations 23197c478bd9Sstevel@tonic-gate * unintentionally. 23207c478bd9Sstevel@tonic-gate */ 23217c478bd9Sstevel@tonic-gate lmp = lml->lm_head; 23227c478bd9Sstevel@tonic-gate sl = *slp; 23239a411307Srie if (((FLAGS(lmp) & MSK_RT_INTPOSE) == 0) || (sl.sl_flags & LKUP_COPY)) 23247c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(lmp); 23257c478bd9Sstevel@tonic-gate else 23267c478bd9Sstevel@tonic-gate sl.sl_flags &= ~LKUP_SPEC; 23277c478bd9Sstevel@tonic-gate 23287c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 23297c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_DELETE) 23307c478bd9Sstevel@tonic-gate continue; 23319a411307Srie if ((FLAGS(lmp) & MSK_RT_INTPOSE) == 0) 23327c478bd9Sstevel@tonic-gate break; 23337c478bd9Sstevel@tonic-gate 23347c478bd9Sstevel@tonic-gate if (callable(lmp, *dlmp, 0)) { 23359a411307Srie Rt_map *ilmp; 23369a411307Srie 23377c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 23389a411307Srie if (sym = SYMINTP(lmp)(&sl, &ilmp, binfo)) { 23399a411307Srie /* 23409a411307Srie * If this object provides individual symbol 23419a411307Srie * interposers, make sure that the symbol we 23429a411307Srie * have found is tagged as an interposer. 23439a411307Srie */ 23449a411307Srie if ((FLAGS(ilmp) & FLG_RT_SYMINTPO) && 23459a411307Srie (is_sym_interposer(ilmp, sym) == 0)) 23469a411307Srie continue; 23479a411307Srie 23489a411307Srie /* 23499a411307Srie * Indicate this binding has occurred to an 23509a411307Srie * interposer, and return the symbol. 23519a411307Srie */ 23527c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_INTERPOSE; 23539a411307Srie *dlmp = ilmp; 23547c478bd9Sstevel@tonic-gate return (sym); 23557c478bd9Sstevel@tonic-gate } 23567c478bd9Sstevel@tonic-gate } 23577c478bd9Sstevel@tonic-gate } 23587c478bd9Sstevel@tonic-gate return ((Sym *)0); 23597c478bd9Sstevel@tonic-gate } 23607c478bd9Sstevel@tonic-gate 23617c478bd9Sstevel@tonic-gate /* 23627c478bd9Sstevel@tonic-gate * If an object specifies direct bindings (it contains a syminfo structure 23637c478bd9Sstevel@tonic-gate * describing where each binding was established during link-editing, and the 23647c478bd9Sstevel@tonic-gate * object was built -Bdirect), then look for the symbol in the specific object. 23657c478bd9Sstevel@tonic-gate */ 23667c478bd9Sstevel@tonic-gate static Sym * 23677c478bd9Sstevel@tonic-gate lookup_sym_direct(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Syminfo *sip, 23687c478bd9Sstevel@tonic-gate Rt_map *lmp) 23697c478bd9Sstevel@tonic-gate { 23707c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 23717c478bd9Sstevel@tonic-gate Sym *sym; 23727c478bd9Sstevel@tonic-gate Slookup sl; 23737c478bd9Sstevel@tonic-gate 23747c478bd9Sstevel@tonic-gate /* 23757c478bd9Sstevel@tonic-gate * If a direct binding resolves to the definition of a copy relocated 23767c478bd9Sstevel@tonic-gate * variable, it must be redirected to the copy (in the executable) that 23777c478bd9Sstevel@tonic-gate * will eventually be made. Typically, this redirection occurs in 23787c478bd9Sstevel@tonic-gate * lookup_sym_interpose(). But, there's an edge condition. If a 23797c478bd9Sstevel@tonic-gate * directly bound executable contains pic code, there may be a 23807c478bd9Sstevel@tonic-gate * reference to a definition that will eventually have a copy made. 23817c478bd9Sstevel@tonic-gate * However, this copy relocation may not yet have occurred, because 23827c478bd9Sstevel@tonic-gate * the relocation making this reference comes before the relocation 23837c478bd9Sstevel@tonic-gate * that will create the copy. 23847c478bd9Sstevel@tonic-gate * Under direct bindings, the syminfo indicates that a copy will be 23857c478bd9Sstevel@tonic-gate * taken (SYMINFO_FLG_COPY). This can only be set in an executable. 23867c478bd9Sstevel@tonic-gate * Thus, the caller must be the executable, so bind to the destination 23877c478bd9Sstevel@tonic-gate * of the copy within the executable. 23887c478bd9Sstevel@tonic-gate */ 23897c478bd9Sstevel@tonic-gate if (((slp->sl_flags & LKUP_COPY) == 0) && 23907c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_COPY)) { 23917c478bd9Sstevel@tonic-gate 23927c478bd9Sstevel@tonic-gate slp->sl_imap = LIST(clmp)->lm_head; 23937c478bd9Sstevel@tonic-gate if (sym = SYMINTP(clmp)(slp, dlmp, binfo)) 23947c478bd9Sstevel@tonic-gate *binfo |= (DBG_BINFO_DIRECT | DBG_BINFO_COPYREF); 23957c478bd9Sstevel@tonic-gate return (sym); 23967c478bd9Sstevel@tonic-gate } 23977c478bd9Sstevel@tonic-gate 23987c478bd9Sstevel@tonic-gate /* 23997c478bd9Sstevel@tonic-gate * If we need to direct bind to our parent start looking in each caller 24007c478bd9Sstevel@tonic-gate * link map. 24017c478bd9Sstevel@tonic-gate */ 24027c478bd9Sstevel@tonic-gate sl = *slp; 24037c478bd9Sstevel@tonic-gate sl.sl_flags |= LKUP_DIRECT; 24047c478bd9Sstevel@tonic-gate sym = 0; 24057c478bd9Sstevel@tonic-gate 24067c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_PARENT) { 24077c478bd9Sstevel@tonic-gate Aliste off; 24087c478bd9Sstevel@tonic-gate Bnd_desc ** bdpp; 24097c478bd9Sstevel@tonic-gate 24107c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(CALLERS(clmp), off, bdpp)) { 24117c478bd9Sstevel@tonic-gate sl.sl_imap = lmp = (*bdpp)->b_caller; 24127c478bd9Sstevel@tonic-gate if ((sym = SYMINTP(lmp)(&sl, dlmp, binfo)) != 0) 24137c478bd9Sstevel@tonic-gate break; 24147c478bd9Sstevel@tonic-gate } 24157c478bd9Sstevel@tonic-gate } else { 24167c478bd9Sstevel@tonic-gate /* 24177c478bd9Sstevel@tonic-gate * If we need to direct bind to anything else look in the 24187c478bd9Sstevel@tonic-gate * link map associated with this symbol reference. 24197c478bd9Sstevel@tonic-gate */ 24207c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_SELF) 24217c478bd9Sstevel@tonic-gate sl.sl_imap = lmp = clmp; 24227c478bd9Sstevel@tonic-gate else 24237c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 24247c478bd9Sstevel@tonic-gate 24257c478bd9Sstevel@tonic-gate if (lmp) 24267c478bd9Sstevel@tonic-gate sym = SYMINTP(lmp)(&sl, dlmp, binfo); 24277c478bd9Sstevel@tonic-gate } 24287c478bd9Sstevel@tonic-gate 24297c478bd9Sstevel@tonic-gate if (sym) 24307c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_DIRECT; 24317c478bd9Sstevel@tonic-gate 24327c478bd9Sstevel@tonic-gate /* 24337c478bd9Sstevel@tonic-gate * If we've bound to an object, determine whether that object can be 24347c478bd9Sstevel@tonic-gate * interposed upon for this symbol. 24357c478bd9Sstevel@tonic-gate */ 24367c478bd9Sstevel@tonic-gate if (sym && (LIST(*dlmp)->lm_head != *dlmp) && 24377c478bd9Sstevel@tonic-gate (LIST(*dlmp) == LIST(clmp))) { 24387c478bd9Sstevel@tonic-gate Sym * isym; 24397c478bd9Sstevel@tonic-gate 24407c478bd9Sstevel@tonic-gate if ((isym = lookup_sym_interpose(slp, dlmp, binfo, 24417c478bd9Sstevel@tonic-gate LIST(*dlmp), sym)) != 0) 24427c478bd9Sstevel@tonic-gate return (isym); 24437c478bd9Sstevel@tonic-gate } 24447c478bd9Sstevel@tonic-gate 24457c478bd9Sstevel@tonic-gate return (sym); 24467c478bd9Sstevel@tonic-gate } 24477c478bd9Sstevel@tonic-gate 24487c478bd9Sstevel@tonic-gate static Sym * 24497c478bd9Sstevel@tonic-gate _lookup_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo, 24507c478bd9Sstevel@tonic-gate Aliste off) 24517c478bd9Sstevel@tonic-gate { 24527c478bd9Sstevel@tonic-gate Rt_map *lmp; 24537c478bd9Sstevel@tonic-gate 24547c478bd9Sstevel@tonic-gate /* 24557c478bd9Sstevel@tonic-gate * Copy relocations should start their search after the head of the 24567c478bd9Sstevel@tonic-gate * main link-map control list. 24577c478bd9Sstevel@tonic-gate */ 24587c478bd9Sstevel@tonic-gate if ((off == ALO_DATA) && (slp->sl_flags & LKUP_COPY) && ilmp) 24597c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(ilmp); 24607c478bd9Sstevel@tonic-gate else 24617c478bd9Sstevel@tonic-gate lmp = ilmp; 24627c478bd9Sstevel@tonic-gate 24637c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 24647c478bd9Sstevel@tonic-gate if (callable(slp->sl_cmap, lmp, 0)) { 24657c478bd9Sstevel@tonic-gate Sym *sym; 24667c478bd9Sstevel@tonic-gate 24677c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 24687c478bd9Sstevel@tonic-gate if ((sym = SYMINTP(lmp)(slp, dlmp, binfo)) != 0) 24697c478bd9Sstevel@tonic-gate return (sym); 24707c478bd9Sstevel@tonic-gate } 24717c478bd9Sstevel@tonic-gate } 24727c478bd9Sstevel@tonic-gate return (0); 24737c478bd9Sstevel@tonic-gate } 24747c478bd9Sstevel@tonic-gate 24757c478bd9Sstevel@tonic-gate static Sym * 24767c478bd9Sstevel@tonic-gate _lazy_find_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo) 24777c478bd9Sstevel@tonic-gate { 24787c478bd9Sstevel@tonic-gate Rt_map *lmp; 24797c478bd9Sstevel@tonic-gate 24807c478bd9Sstevel@tonic-gate for (lmp = ilmp; lmp; lmp = (Rt_map *)NEXT(lmp)) { 24817c478bd9Sstevel@tonic-gate if (LAZY(lmp) == 0) 24827c478bd9Sstevel@tonic-gate continue; 24837c478bd9Sstevel@tonic-gate if (callable(slp->sl_cmap, lmp, 0)) { 24847c478bd9Sstevel@tonic-gate Sym *sym; 24857c478bd9Sstevel@tonic-gate 24867c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 24877c478bd9Sstevel@tonic-gate if ((sym = elf_lazy_find_sym(slp, dlmp, binfo)) != 0) 24887c478bd9Sstevel@tonic-gate return (sym); 24897c478bd9Sstevel@tonic-gate } 24907c478bd9Sstevel@tonic-gate } 24917c478bd9Sstevel@tonic-gate return (0); 24927c478bd9Sstevel@tonic-gate } 24937c478bd9Sstevel@tonic-gate 24947c478bd9Sstevel@tonic-gate /* 24957c478bd9Sstevel@tonic-gate * Symbol lookup routine. Takes an ELF symbol name, and a list of link maps to 24967c478bd9Sstevel@tonic-gate * search (if the flag indicates LKUP_FIRST only the first link map of the list 24977c478bd9Sstevel@tonic-gate * is searched ie. we've been called from dlsym()). 24987c478bd9Sstevel@tonic-gate * If successful, return a pointer to the symbol table entry and a pointer to 24997c478bd9Sstevel@tonic-gate * the link map of the enclosing object. Else return a null pointer. 25007c478bd9Sstevel@tonic-gate * 25017c478bd9Sstevel@tonic-gate * To improve elf performance, we first compute the elf hash value and pass 25027c478bd9Sstevel@tonic-gate * it to each find_sym() routine. The elf function will use this value to 25037c478bd9Sstevel@tonic-gate * locate the symbol, the a.out function will simply ignore it. 25047c478bd9Sstevel@tonic-gate */ 25057c478bd9Sstevel@tonic-gate Sym * 25067c478bd9Sstevel@tonic-gate lookup_sym(Slookup *slp, Rt_map **dlmp, uint_t *binfo) 25077c478bd9Sstevel@tonic-gate { 25087c478bd9Sstevel@tonic-gate const char *name = slp->sl_name; 25097c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 25107c478bd9Sstevel@tonic-gate Rt_map *ilmp = slp->sl_imap, *lmp; 25117c478bd9Sstevel@tonic-gate uint_t flags = slp->sl_flags; 25127c478bd9Sstevel@tonic-gate ulong_t rsymndx; 25137c478bd9Sstevel@tonic-gate Sym *sym = 0; 25147c478bd9Sstevel@tonic-gate Syminfo *sip; 25157c478bd9Sstevel@tonic-gate Slookup sl; 25167c478bd9Sstevel@tonic-gate 25177c478bd9Sstevel@tonic-gate if (slp->sl_hash == 0) 25187c478bd9Sstevel@tonic-gate slp->sl_hash = elf_hash(name); 25197c478bd9Sstevel@tonic-gate *binfo = 0; 25207c478bd9Sstevel@tonic-gate 25217c478bd9Sstevel@tonic-gate /* 25227c478bd9Sstevel@tonic-gate * Search the initial link map for the required symbol (this category is 25237c478bd9Sstevel@tonic-gate * selected by dlsym(), where individual link maps are searched for a 25247c478bd9Sstevel@tonic-gate * required symbol. Therefore, we know we have permission to look at 25257c478bd9Sstevel@tonic-gate * the link map). 25267c478bd9Sstevel@tonic-gate */ 25277c478bd9Sstevel@tonic-gate if (flags & LKUP_FIRST) 25287c478bd9Sstevel@tonic-gate return (SYMINTP(ilmp)(slp, dlmp, binfo)); 25297c478bd9Sstevel@tonic-gate 25307c478bd9Sstevel@tonic-gate /* 25317c478bd9Sstevel@tonic-gate * Determine whether this lookup can be satisfied by an objects direct, 25327c478bd9Sstevel@tonic-gate * or lazy binding information. This is triggered by a relocation from 25337c478bd9Sstevel@tonic-gate * the object (hence rsymndx is set). 25347c478bd9Sstevel@tonic-gate */ 25357c478bd9Sstevel@tonic-gate if (((rsymndx = slp->sl_rsymndx) != 0) && 25367c478bd9Sstevel@tonic-gate ((sip = SYMINFO(clmp)) != 0)) { 25377c478bd9Sstevel@tonic-gate 25387c478bd9Sstevel@tonic-gate /* 25397c478bd9Sstevel@tonic-gate * Find the corresponding Syminfo entry for the original 25407c478bd9Sstevel@tonic-gate * referencing symbol. 25417c478bd9Sstevel@tonic-gate */ 25427c478bd9Sstevel@tonic-gate /* LINTED */ 25437c478bd9Sstevel@tonic-gate sip = (Syminfo *)((char *)sip + (rsymndx * SYMINENT(clmp))); 25447c478bd9Sstevel@tonic-gate 25457c478bd9Sstevel@tonic-gate /* 25467c478bd9Sstevel@tonic-gate * If the symbol information indicates a direct binding, 25477c478bd9Sstevel@tonic-gate * determine the link map that is required to satisfy the 25487c478bd9Sstevel@tonic-gate * binding. Note, if the dependency can not be found, but a 25497c478bd9Sstevel@tonic-gate * direct binding isn't required, we will still fall through 25507c478bd9Sstevel@tonic-gate * to perform any default symbol search. 25517c478bd9Sstevel@tonic-gate */ 25527c478bd9Sstevel@tonic-gate if (sip->si_flags & SYMINFO_FLG_DIRECT) { 25537c478bd9Sstevel@tonic-gate uint_t bound = sip->si_boundto; 25547c478bd9Sstevel@tonic-gate 25557c478bd9Sstevel@tonic-gate lmp = 0; 25567c478bd9Sstevel@tonic-gate if (bound < SYMINFO_BT_LOWRESERVE) 25577c478bd9Sstevel@tonic-gate lmp = elf_lazy_load(clmp, bound, name); 25587c478bd9Sstevel@tonic-gate 25597c478bd9Sstevel@tonic-gate /* 25607c478bd9Sstevel@tonic-gate * If direct bindings have been disabled, and this isn't 25617c478bd9Sstevel@tonic-gate * a translator, skip any direct binding now that we've 25627c478bd9Sstevel@tonic-gate * insured the resolving object has been loaded. 25637c478bd9Sstevel@tonic-gate * 25647c478bd9Sstevel@tonic-gate * If we need to direct bind to anything, we look in 25657c478bd9Sstevel@tonic-gate * ourselves, our parent, or in the link map we've just 25667c478bd9Sstevel@tonic-gate * loaded. Otherwise, even though we may have lazily 25677c478bd9Sstevel@tonic-gate * loaded an object we still continue to search for 25687c478bd9Sstevel@tonic-gate * symbols from the head of the link map list. 25697c478bd9Sstevel@tonic-gate */ 25707c478bd9Sstevel@tonic-gate if (((FLAGS(clmp) & FLG_RT_TRANS) || 25717c478bd9Sstevel@tonic-gate (!(LIST(clmp)->lm_tflags & LML_TFLG_NODIRECT))) && 25729a411307Srie ((FLAGS1(clmp) & FL1_RT_DIRECT) || 25737c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_DIRECTBIND))) { 25747c478bd9Sstevel@tonic-gate sym = lookup_sym_direct(slp, dlmp, binfo, 25757c478bd9Sstevel@tonic-gate sip, lmp); 25767c478bd9Sstevel@tonic-gate 25777c478bd9Sstevel@tonic-gate /* 25787c478bd9Sstevel@tonic-gate * If this direct binding has been disabled 25797c478bd9Sstevel@tonic-gate * (presumably because the symbol definition has 25807c478bd9Sstevel@tonic-gate * been changed since the referring object was 25817c478bd9Sstevel@tonic-gate * built), fall back to a standard symbol 25827c478bd9Sstevel@tonic-gate * search. 25837c478bd9Sstevel@tonic-gate */ 25847c478bd9Sstevel@tonic-gate if ((*binfo & BINFO_DIRECTDIS) == 0) 25857c478bd9Sstevel@tonic-gate return (sym); 25867c478bd9Sstevel@tonic-gate } 25877c478bd9Sstevel@tonic-gate } 25887c478bd9Sstevel@tonic-gate } 25897c478bd9Sstevel@tonic-gate 25907c478bd9Sstevel@tonic-gate sl = *slp; 25917c478bd9Sstevel@tonic-gate 25927c478bd9Sstevel@tonic-gate /* 25937c478bd9Sstevel@tonic-gate * If the referencing object has the DF_SYMBOLIC flag set, look in the 25947c478bd9Sstevel@tonic-gate * referencing object for the symbol first. Failing that, fall back to 25957c478bd9Sstevel@tonic-gate * our generic search. 25967c478bd9Sstevel@tonic-gate */ 25977c478bd9Sstevel@tonic-gate if (FLAGS1(clmp) & FL1_RT_SYMBOLIC) { 25987c478bd9Sstevel@tonic-gate sl.sl_imap = clmp; 25999a411307Srie if (sym = SYMINTP(clmp)(&sl, dlmp, binfo)) { 26009a411307Srie ulong_t dsymndx = (((ulong_t)sym - 26019a411307Srie (ulong_t)SYMTAB(*dlmp)) / SYMENT(*dlmp)); 26029a411307Srie 26039a411307Srie /* 26049a411307Srie * Make sure this symbol hasn't explicitly been defined 26059a411307Srie * as nodirect. 26069a411307Srie */ 26079a411307Srie if (((sip = SYMINFO(*dlmp)) == 0) || 26089a411307Srie /* LINTED */ 26099a411307Srie ((sip = (Syminfo *)((char *)sip + 26109a411307Srie (dsymndx * SYMINENT(*dlmp)))) == 0) || 26119a411307Srie ((sip->si_flags & SYMINFO_FLG_NOEXTDIRECT) == 0)) 26127c478bd9Sstevel@tonic-gate return (sym); 26137c478bd9Sstevel@tonic-gate } 26149a411307Srie } 26157c478bd9Sstevel@tonic-gate 26167c478bd9Sstevel@tonic-gate /* 26177c478bd9Sstevel@tonic-gate * If this lookup originates from a standard relocation, then traverse 26187c478bd9Sstevel@tonic-gate * all link-map lists inspecting any object that is available to this 26197c478bd9Sstevel@tonic-gate * caller. Otherwise, traverse the link-map list associate with the 26207c478bd9Sstevel@tonic-gate * caller. 26217c478bd9Sstevel@tonic-gate */ 26227c478bd9Sstevel@tonic-gate if (flags & LKUP_ALLCNTLIST) { 26237c478bd9Sstevel@tonic-gate Aliste off; 26247c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 26257c478bd9Sstevel@tonic-gate 26267c478bd9Sstevel@tonic-gate sym = 0; 26277c478bd9Sstevel@tonic-gate 26287c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(LIST(clmp)->lm_lists, off, lmc)) { 26297c478bd9Sstevel@tonic-gate if ((sym = _lookup_sym(lmc->lc_head, &sl, dlmp, 26307c478bd9Sstevel@tonic-gate binfo, off)) != 0) 26317c478bd9Sstevel@tonic-gate break; 26327c478bd9Sstevel@tonic-gate } 26337c478bd9Sstevel@tonic-gate } else 26347c478bd9Sstevel@tonic-gate sym = _lookup_sym(ilmp, &sl, dlmp, binfo, ALO_DATA); 26357c478bd9Sstevel@tonic-gate 26367c478bd9Sstevel@tonic-gate /* 26377c478bd9Sstevel@tonic-gate * To allow transitioning into a world of lazy loading dependencies see 26387c478bd9Sstevel@tonic-gate * if this link map contains objects that have lazy dependencies still 26397c478bd9Sstevel@tonic-gate * outstanding. If so, and we haven't been able to locate a non-weak 26407c478bd9Sstevel@tonic-gate * symbol reference, start bringing in any lazy dependencies to see if 26417c478bd9Sstevel@tonic-gate * the reference can be satisfied. Use of dlsym(RTLD_PROBE) sets the 26427c478bd9Sstevel@tonic-gate * LKUP_NOFALBACK flag, and this flag disables this fall back. 26437c478bd9Sstevel@tonic-gate */ 26447c478bd9Sstevel@tonic-gate if ((sym == 0) && ((sl.sl_flags & LKUP_NOFALBACK) == 0)) { 26457c478bd9Sstevel@tonic-gate if ((lmp = ilmp) == 0) 26467c478bd9Sstevel@tonic-gate lmp = LIST(clmp)->lm_head; 26477c478bd9Sstevel@tonic-gate if ((flags & LKUP_WEAK) || (LIST(lmp)->lm_lazy == 0)) 26487c478bd9Sstevel@tonic-gate return ((Sym *)0); 26497c478bd9Sstevel@tonic-gate 26505aefb655Srie DBG_CALL(Dbg_syms_lazy_rescan(LIST(clmp), name)); 26517c478bd9Sstevel@tonic-gate 26527c478bd9Sstevel@tonic-gate /* 26537c478bd9Sstevel@tonic-gate * If this request originated from a dlsym(RTLD_NEXT) then start 26547c478bd9Sstevel@tonic-gate * looking for dependencies from the caller, otherwise use the 26557c478bd9Sstevel@tonic-gate * initial link-map. 26567c478bd9Sstevel@tonic-gate */ 26577c478bd9Sstevel@tonic-gate if (flags & LKUP_NEXT) 26587c478bd9Sstevel@tonic-gate sym = _lazy_find_sym(clmp, &sl, dlmp, binfo); 26597c478bd9Sstevel@tonic-gate else { 26607c478bd9Sstevel@tonic-gate Aliste off; 26617c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 26627c478bd9Sstevel@tonic-gate 26637c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(LIST(clmp)->lm_lists, off, lmc)) { 26647c478bd9Sstevel@tonic-gate sl.sl_flags |= LKUP_NOFALBACK; 26657c478bd9Sstevel@tonic-gate if ((sym = _lazy_find_sym(lmc->lc_head, &sl, 26667c478bd9Sstevel@tonic-gate dlmp, binfo)) != 0) 26677c478bd9Sstevel@tonic-gate break; 26687c478bd9Sstevel@tonic-gate } 26697c478bd9Sstevel@tonic-gate } 26707c478bd9Sstevel@tonic-gate } 26717c478bd9Sstevel@tonic-gate 26727c478bd9Sstevel@tonic-gate /* 26737c478bd9Sstevel@tonic-gate * If the caller is restricted to a symbol search within its group, 26747c478bd9Sstevel@tonic-gate * determine if it is necessary to follow a binding from outside of 26757c478bd9Sstevel@tonic-gate * the group. 26767c478bd9Sstevel@tonic-gate */ 26777c478bd9Sstevel@tonic-gate if (sym && ((MODE(clmp) & (RTLD_GROUP | RTLD_WORLD)) == RTLD_GROUP)) { 26787c478bd9Sstevel@tonic-gate Sym * isym; 26797c478bd9Sstevel@tonic-gate 26807c478bd9Sstevel@tonic-gate if ((isym = lookup_sym_interpose(slp, dlmp, binfo, LIST(*dlmp), 26817c478bd9Sstevel@tonic-gate sym)) != 0) 26827c478bd9Sstevel@tonic-gate return (isym); 26837c478bd9Sstevel@tonic-gate } 26847c478bd9Sstevel@tonic-gate return (sym); 26857c478bd9Sstevel@tonic-gate } 26867c478bd9Sstevel@tonic-gate 26877c478bd9Sstevel@tonic-gate /* 26887c478bd9Sstevel@tonic-gate * Associate a binding descriptor with a caller and its dependency, or update 26897c478bd9Sstevel@tonic-gate * an existing descriptor. 26907c478bd9Sstevel@tonic-gate */ 26917c478bd9Sstevel@tonic-gate int 26927c478bd9Sstevel@tonic-gate bind_one(Rt_map *clmp, Rt_map *dlmp, uint_t flags) 26937c478bd9Sstevel@tonic-gate { 26947c478bd9Sstevel@tonic-gate Bnd_desc **bdpp, *bdp; 26957c478bd9Sstevel@tonic-gate Aliste off; 26967c478bd9Sstevel@tonic-gate int found = ALE_CREATE; 26977c478bd9Sstevel@tonic-gate 26987c478bd9Sstevel@tonic-gate /* 26997c478bd9Sstevel@tonic-gate * Determine whether a binding descriptor already exists between the 27007c478bd9Sstevel@tonic-gate * two objects. 27017c478bd9Sstevel@tonic-gate */ 27027c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(DEPENDS(clmp), off, bdpp)) { 27037c478bd9Sstevel@tonic-gate bdp = *bdpp; 27047c478bd9Sstevel@tonic-gate 27057c478bd9Sstevel@tonic-gate if (bdp->b_depend == dlmp) { 27067c478bd9Sstevel@tonic-gate found = ALE_EXISTS; 27077c478bd9Sstevel@tonic-gate break; 27087c478bd9Sstevel@tonic-gate } 27097c478bd9Sstevel@tonic-gate } 27107c478bd9Sstevel@tonic-gate 27117c478bd9Sstevel@tonic-gate if (found == ALE_CREATE) { 27127c478bd9Sstevel@tonic-gate /* 27137c478bd9Sstevel@tonic-gate * Create a new binding descriptor. 27147c478bd9Sstevel@tonic-gate */ 27157c478bd9Sstevel@tonic-gate if ((bdp = malloc(sizeof (Bnd_desc))) == 0) 27167c478bd9Sstevel@tonic-gate return (0); 27177c478bd9Sstevel@tonic-gate 27187c478bd9Sstevel@tonic-gate bdp->b_caller = clmp; 27197c478bd9Sstevel@tonic-gate bdp->b_depend = dlmp; 27207c478bd9Sstevel@tonic-gate bdp->b_flags = 0; 27217c478bd9Sstevel@tonic-gate 27227c478bd9Sstevel@tonic-gate /* 27237c478bd9Sstevel@tonic-gate * Append the binding descriptor to the caller and the 27247c478bd9Sstevel@tonic-gate * dependency. 27257c478bd9Sstevel@tonic-gate */ 27267c478bd9Sstevel@tonic-gate if (alist_append(&DEPENDS(clmp), &bdp, 27277c478bd9Sstevel@tonic-gate sizeof (Bnd_desc *), AL_CNT_DEPENDS) == 0) 27287c478bd9Sstevel@tonic-gate return (0); 27297c478bd9Sstevel@tonic-gate 27307c478bd9Sstevel@tonic-gate if (alist_append(&CALLERS(dlmp), &bdp, 27317c478bd9Sstevel@tonic-gate sizeof (Bnd_desc *), AL_CNT_CALLERS) == 0) 27327c478bd9Sstevel@tonic-gate return (0); 27337c478bd9Sstevel@tonic-gate } 27347c478bd9Sstevel@tonic-gate 27357c478bd9Sstevel@tonic-gate if ((found == ALE_CREATE) || ((bdp->b_flags & flags) != flags)) { 27367c478bd9Sstevel@tonic-gate bdp->b_flags |= flags; 27377c478bd9Sstevel@tonic-gate 27387c478bd9Sstevel@tonic-gate if (flags & BND_REFER) 27397c478bd9Sstevel@tonic-gate FLAGS1(dlmp) |= FL1_RT_USED; 27407c478bd9Sstevel@tonic-gate 27415aefb655Srie DBG_CALL(Dbg_file_bind_entry(LIST(clmp), bdp)); 27427c478bd9Sstevel@tonic-gate } 27437c478bd9Sstevel@tonic-gate return (found); 27447c478bd9Sstevel@tonic-gate } 27457c478bd9Sstevel@tonic-gate 27467c478bd9Sstevel@tonic-gate /* 27477c478bd9Sstevel@tonic-gate * Cleanup after relocation processing. 27487c478bd9Sstevel@tonic-gate */ 27497c478bd9Sstevel@tonic-gate int 27507c478bd9Sstevel@tonic-gate relocate_finish(Rt_map *lmp, Alist *bound, int textrel, int ret) 27517c478bd9Sstevel@tonic-gate { 27525aefb655Srie DBG_CALL(Dbg_reloc_run(lmp, 0, ret, DBG_REL_FINISH)); 27537c478bd9Sstevel@tonic-gate 27547c478bd9Sstevel@tonic-gate /* 27557c478bd9Sstevel@tonic-gate * Establish bindings to all objects that have been bound to. 27567c478bd9Sstevel@tonic-gate */ 27577c478bd9Sstevel@tonic-gate if (bound) { 27587c478bd9Sstevel@tonic-gate Aliste off; 27597c478bd9Sstevel@tonic-gate Rt_map **lmpp; 27607c478bd9Sstevel@tonic-gate 27617c478bd9Sstevel@tonic-gate if (ret) { 27627c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(bound, off, lmpp)) { 27637c478bd9Sstevel@tonic-gate if (bind_one(lmp, *lmpp, BND_REFER) == 0) { 27647c478bd9Sstevel@tonic-gate ret = 0; 27657c478bd9Sstevel@tonic-gate break; 27667c478bd9Sstevel@tonic-gate } 27677c478bd9Sstevel@tonic-gate } 27687c478bd9Sstevel@tonic-gate } 27697c478bd9Sstevel@tonic-gate free(bound); 27707c478bd9Sstevel@tonic-gate } 27717c478bd9Sstevel@tonic-gate 27727c478bd9Sstevel@tonic-gate /* 27737c478bd9Sstevel@tonic-gate * If we write enabled the text segment to perform these relocations 27747c478bd9Sstevel@tonic-gate * re-protect by disabling writes. 27757c478bd9Sstevel@tonic-gate */ 27767c478bd9Sstevel@tonic-gate if (textrel) 27777c478bd9Sstevel@tonic-gate (void) LM_SET_PROT(lmp)(lmp, 0); 27787c478bd9Sstevel@tonic-gate 27797c478bd9Sstevel@tonic-gate return (ret); 27807c478bd9Sstevel@tonic-gate } 2781