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 32002ca3e02Srie #if defined(__i386) 3217c478bd9Sstevel@tonic-gate if (elf_copy_gen(nlmp) == 0) 3227c478bd9Sstevel@tonic-gate return (0); 3237c478bd9Sstevel@tonic-gate #endif 3247c478bd9Sstevel@tonic-gate if (COPY(nlmp) == 0) 3257c478bd9Sstevel@tonic-gate return (1); 3267c478bd9Sstevel@tonic-gate 3277c478bd9Sstevel@tonic-gate if ((LIST(nlmp)->lm_flags & LML_FLG_TRC_ENABLE) && 3287c478bd9Sstevel@tonic-gate (((rtld_flags & RT_FL_SILENCERR) == 0) || 3297c478bd9Sstevel@tonic-gate (LIST(nlmp)->lm_flags & LML_FLG_TRC_VERBOSE))) 3307c478bd9Sstevel@tonic-gate tracing = 1; 3317c478bd9Sstevel@tonic-gate else 3327c478bd9Sstevel@tonic-gate tracing = 0; 3337c478bd9Sstevel@tonic-gate 3345aefb655Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 3357c478bd9Sstevel@tonic-gate 3367c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(COPY(nlmp), off1, lmpp)) { 3377c478bd9Sstevel@tonic-gate Rt_map * lmp = *lmpp; 3387c478bd9Sstevel@tonic-gate Rel_copy * rcp; 3397c478bd9Sstevel@tonic-gate Aliste off2; 3407c478bd9Sstevel@tonic-gate 3417c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(COPY(lmp), off2, rcp)) { 3427c478bd9Sstevel@tonic-gate int zero; 3437c478bd9Sstevel@tonic-gate 3447c478bd9Sstevel@tonic-gate /* 3457c478bd9Sstevel@tonic-gate * Only copy the bits if it's from non-zero 3467c478bd9Sstevel@tonic-gate * filled memory. 3477c478bd9Sstevel@tonic-gate */ 3487c478bd9Sstevel@tonic-gate zero = copy_zerobits(rcp->r_dlmp, rcp->r_dsym); 3495aefb655Srie DBG_CALL(Dbg_reloc_copy(rcp->r_dlmp, nlmp, 3505aefb655Srie rcp->r_name, zero)); 3517c478bd9Sstevel@tonic-gate if (zero) 3527c478bd9Sstevel@tonic-gate continue; 3537c478bd9Sstevel@tonic-gate 3547c478bd9Sstevel@tonic-gate (void) memcpy(rcp->r_radd, rcp->r_dadd, 3557c478bd9Sstevel@tonic-gate rcp->r_size); 3567c478bd9Sstevel@tonic-gate 3577c478bd9Sstevel@tonic-gate if ((tracing == 0) || ((FLAGS1(rcp->r_dlmp) & 3587c478bd9Sstevel@tonic-gate FL1_RT_DISPREL) == 0)) 3597c478bd9Sstevel@tonic-gate continue; 3607c478bd9Sstevel@tonic-gate 3617c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_REL_CPYDISP), 3627c478bd9Sstevel@tonic-gate demangle(rcp->r_name), NAME(rcp->r_dlmp)); 3637c478bd9Sstevel@tonic-gate } 3647c478bd9Sstevel@tonic-gate } 3657c478bd9Sstevel@tonic-gate 3665aefb655Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 3677c478bd9Sstevel@tonic-gate 3687c478bd9Sstevel@tonic-gate free(COPY(nlmp)); 3697c478bd9Sstevel@tonic-gate COPY(nlmp) = 0; 3707c478bd9Sstevel@tonic-gate } 3717c478bd9Sstevel@tonic-gate return (1); 3727c478bd9Sstevel@tonic-gate } 3737c478bd9Sstevel@tonic-gate 3747c478bd9Sstevel@tonic-gate int 37502ca3e02Srie relocate_lmc(Lm_list *lml, Aliste nlmco, Rt_map *clmp, Rt_map *nlmp) 3767c478bd9Sstevel@tonic-gate { 3777c478bd9Sstevel@tonic-gate int lret = 1, pret = 1; 3787c478bd9Sstevel@tonic-gate Alist *alp; 3797c478bd9Sstevel@tonic-gate Aliste plmco; 3807c478bd9Sstevel@tonic-gate Lm_cntl *plmc, *nlmc; 3817c478bd9Sstevel@tonic-gate 3827c478bd9Sstevel@tonic-gate /* 3837c478bd9Sstevel@tonic-gate * If this link-map control list is being relocated, return. The object 3847c478bd9Sstevel@tonic-gate * that has just been added will be picked up by the existing relocation 3857c478bd9Sstevel@tonic-gate * thread. Note, this is only really meaningful during process init- 3867c478bd9Sstevel@tonic-gate * ialization, as objects are added to the main link-map control list. 3877c478bd9Sstevel@tonic-gate * Following this initialization, each family of objects that are loaded 3887c478bd9Sstevel@tonic-gate * are added to a new link-map control list. 3897c478bd9Sstevel@tonic-gate */ 3907c478bd9Sstevel@tonic-gate /* LINTED */ 3917c478bd9Sstevel@tonic-gate nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 3927c478bd9Sstevel@tonic-gate 3937c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_RELOCATING) 3947c478bd9Sstevel@tonic-gate return (1); 3957c478bd9Sstevel@tonic-gate 3967c478bd9Sstevel@tonic-gate nlmc->lc_flags |= LMC_FLG_RELOCATING; 3977c478bd9Sstevel@tonic-gate 3987c478bd9Sstevel@tonic-gate /* 3997c478bd9Sstevel@tonic-gate * Relocate one or more link-maps of a link map control list. If this 4007c478bd9Sstevel@tonic-gate * object doesn't belong to the present link-map control list then it 4017c478bd9Sstevel@tonic-gate * must already have been relocated, or it is in the process of being 4027c478bd9Sstevel@tonic-gate * relocated prior to us recursing into this relocation. In either 4037c478bd9Sstevel@tonic-gate * case, ignore the object as it's already being taken care of, however, 4047c478bd9Sstevel@tonic-gate * fall through and capture any relocation promotions that might have 4057c478bd9Sstevel@tonic-gate * been established from the reference mode of this object. 4067c478bd9Sstevel@tonic-gate * 4077c478bd9Sstevel@tonic-gate * If we're generating a configuration file using crle(1), two passes 4087c478bd9Sstevel@tonic-gate * may be involved. Under the first pass, RTLD_CONFGEN is set. Under 4097c478bd9Sstevel@tonic-gate * this pass, crle() loads objects into the process address space. No 4107c478bd9Sstevel@tonic-gate * relocation is necessary at this point, we simply need to analyze the 4117c478bd9Sstevel@tonic-gate * objects to insure any directly bound dependencies, filtees, etc. 4127c478bd9Sstevel@tonic-gate * get loaded. Although we skip the relocation, fall through to insure 4137c478bd9Sstevel@tonic-gate * any control lists are maintained appropriately. 4147c478bd9Sstevel@tonic-gate * 4157c478bd9Sstevel@tonic-gate * If objects are to be dldump(3c)'ed, crle(1) makes a second pass, 4167c478bd9Sstevel@tonic-gate * using RTLD_NOW and RTLD_CONFGEN. The RTLD_NOW effectively carries 4177c478bd9Sstevel@tonic-gate * out the relocations of all loaded objects. 4187c478bd9Sstevel@tonic-gate */ 4197c478bd9Sstevel@tonic-gate if ((nlmco == CNTL(nlmp)) && 4207c478bd9Sstevel@tonic-gate ((MODE(nlmp) & (RTLD_NOW | RTLD_CONFGEN)) != RTLD_CONFGEN)) { 4217c478bd9Sstevel@tonic-gate int relocated = 0; 4227c478bd9Sstevel@tonic-gate 4237c478bd9Sstevel@tonic-gate /* 4247c478bd9Sstevel@tonic-gate * Determine whether the initial link-map control list has 4257c478bd9Sstevel@tonic-gate * started relocation. From this point, should any interposing 4267c478bd9Sstevel@tonic-gate * objects be added to this link-map control list, the objects 4277c478bd9Sstevel@tonic-gate * are demoted to standard objects. Their interposition can't 4287c478bd9Sstevel@tonic-gate * be guaranteed once relocations have been carried out. 4297c478bd9Sstevel@tonic-gate */ 4307c478bd9Sstevel@tonic-gate if (nlmco == ALO_DATA) 4317c478bd9Sstevel@tonic-gate lml->lm_flags |= LML_FLG_STARTREL; 4327c478bd9Sstevel@tonic-gate 4337c478bd9Sstevel@tonic-gate /* 43402ca3e02Srie * Relocate the link-map control list. Should this relocation 43502ca3e02Srie * fail, clean up this link-map list. Relocations within this 43602ca3e02Srie * list may have required relocation promotions on other lists, 43702ca3e02Srie * so before acting upon these, and possibly adding more objects 43802ca3e02Srie * to the present link-map control list, try and clean up any 43902ca3e02Srie * failed objects now. 4407c478bd9Sstevel@tonic-gate */ 4417c478bd9Sstevel@tonic-gate lret = _relocate_lmc(lml, nlmp, &relocated); 44202ca3e02Srie if ((lret == 0) && (nlmco != ALO_DATA)) 44302ca3e02Srie remove_lmc(lml, clmp, nlmc, nlmco, NAME(nlmp)); 4447c478bd9Sstevel@tonic-gate } 4457c478bd9Sstevel@tonic-gate 4467c478bd9Sstevel@tonic-gate /* 4477c478bd9Sstevel@tonic-gate * Determine the new, and previous link-map control lists. 4487c478bd9Sstevel@tonic-gate */ 44924a6229eSrie /* LINTED */ 45024a6229eSrie nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 4516679fdc0Srie if (nlmco == ALO_DATA) { 4526679fdc0Srie plmco = nlmco; 4537c478bd9Sstevel@tonic-gate plmc = nlmc; 4546679fdc0Srie } else { 4557c478bd9Sstevel@tonic-gate plmco = nlmco - lml->lm_lists->al_size; 4567c478bd9Sstevel@tonic-gate /* LINTED */ 4577c478bd9Sstevel@tonic-gate plmc = (Lm_cntl *)((char *)lml->lm_lists + plmco); 4587c478bd9Sstevel@tonic-gate } 4597c478bd9Sstevel@tonic-gate 4607c478bd9Sstevel@tonic-gate /* 4617c478bd9Sstevel@tonic-gate * Having completed this control list of objects, they can now be bound 4627c478bd9Sstevel@tonic-gate * to from other objects. Move this control list to the control list 4637c478bd9Sstevel@tonic-gate * that precedes it. Although this control list may have only bound to 4647c478bd9Sstevel@tonic-gate * controls lists much higher up the control list stack, it must only 4657c478bd9Sstevel@tonic-gate * be moved up one control list so as to preserve the link-map order 4667c478bd9Sstevel@tonic-gate * that may have already been traversed in search of symbols. 4677c478bd9Sstevel@tonic-gate */ 4687c478bd9Sstevel@tonic-gate if (lret && (nlmco != ALO_DATA) && nlmc->lc_head) 4697c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 4707c478bd9Sstevel@tonic-gate 4717c478bd9Sstevel@tonic-gate /* 4727c478bd9Sstevel@tonic-gate * Determine whether existing objects that have already been relocated, 4737c478bd9Sstevel@tonic-gate * need any additional relocations performed. This can occur when new 4747c478bd9Sstevel@tonic-gate * objects are loaded with RTLD_NOW, and these new objects have 4757c478bd9Sstevel@tonic-gate * dependencies on objects that are already loaded. Note, that we peel 4767c478bd9Sstevel@tonic-gate * any relocation promotions off of one control list at a time. This 4777c478bd9Sstevel@tonic-gate * prevents relocations from being bound to objects that might yet fail 4787c478bd9Sstevel@tonic-gate * to relocate themselves. 4797c478bd9Sstevel@tonic-gate */ 4807c478bd9Sstevel@tonic-gate while ((alp = plmc->lc_now) != 0) { 4817c478bd9Sstevel@tonic-gate Aliste off; 4827c478bd9Sstevel@tonic-gate Rt_map **lmpp; 4837c478bd9Sstevel@tonic-gate 4847c478bd9Sstevel@tonic-gate /* 4857c478bd9Sstevel@tonic-gate * Remove the relocation promotion list, as performing more 4867c478bd9Sstevel@tonic-gate * relocations may result in discovering more objects that need 4877c478bd9Sstevel@tonic-gate * promotion. 4887c478bd9Sstevel@tonic-gate */ 4897c478bd9Sstevel@tonic-gate plmc->lc_now = 0; 4907c478bd9Sstevel@tonic-gate 4917c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(alp, off, lmpp)) { 4927c478bd9Sstevel@tonic-gate Rt_map *lmp = *lmpp; 4937c478bd9Sstevel@tonic-gate 4947c478bd9Sstevel@tonic-gate /* 4957c478bd9Sstevel@tonic-gate * If the original relocation of the link-map control 4967c478bd9Sstevel@tonic-gate * list failed, or one of the relocation promotions of 4977c478bd9Sstevel@tonic-gate * this loop has failed, demote any pending objects 4987c478bd9Sstevel@tonic-gate * relocation mode. 4997c478bd9Sstevel@tonic-gate */ 5007c478bd9Sstevel@tonic-gate if ((lret == 0) || (pret == 0)) { 5017c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_NOW; 5027c478bd9Sstevel@tonic-gate MODE(lmp) |= RTLD_LAZY; 5037c478bd9Sstevel@tonic-gate continue; 5047c478bd9Sstevel@tonic-gate } 5057c478bd9Sstevel@tonic-gate 5067c478bd9Sstevel@tonic-gate /* 5077c478bd9Sstevel@tonic-gate * If a relocation fails, save the error condition. 5087c478bd9Sstevel@tonic-gate * It's possible that all new objects on the original 5097c478bd9Sstevel@tonic-gate * link-map control list have been relocated 5107c478bd9Sstevel@tonic-gate * successfully, but if the user request requires 5117c478bd9Sstevel@tonic-gate * promoting objects that have already been loaded, we 5127c478bd9Sstevel@tonic-gate * have to indicate that this operation couldn't be 5137c478bd9Sstevel@tonic-gate * performed. The unrelocated objects are in use on 5147c478bd9Sstevel@tonic-gate * another control list, and may continue to be used. 5157c478bd9Sstevel@tonic-gate * If the .plt that resulted in the error is called, 5167c478bd9Sstevel@tonic-gate * then the process will receive a fatal error at that 5177c478bd9Sstevel@tonic-gate * time. But, the .plt may never be called. 5187c478bd9Sstevel@tonic-gate */ 5197c478bd9Sstevel@tonic-gate if (relocate_so(lml, lmp, 0, 1) == 0) 5207c478bd9Sstevel@tonic-gate pret = 0; 5217c478bd9Sstevel@tonic-gate } 5227c478bd9Sstevel@tonic-gate 5237c478bd9Sstevel@tonic-gate /* 5247c478bd9Sstevel@tonic-gate * Having promoted any objects, determine whether additional 5257c478bd9Sstevel@tonic-gate * dependencies were added, and if so move them to the previous 5267c478bd9Sstevel@tonic-gate * link-map control list. 5277c478bd9Sstevel@tonic-gate */ 52824a6229eSrie /* LINTED */ 52924a6229eSrie nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 53024a6229eSrie /* LINTED */ 53124a6229eSrie plmc = (Lm_cntl *)((char *)lml->lm_lists + plmco); 5327c478bd9Sstevel@tonic-gate if ((nlmco != ALO_DATA) && nlmc->lc_head) 5337c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 5348521e5e6Srie free(alp); 5357c478bd9Sstevel@tonic-gate } 5367c478bd9Sstevel@tonic-gate 53724a6229eSrie /* 53802ca3e02Srie * If relocations have been successful, indicate that relocations are 53902ca3e02Srie * no longer active for this control list. Otherwise, leave the 54002ca3e02Srie * relocation flag, as this flag is used to determine the style of 54102ca3e02Srie * cleanup (see remove_lmc()). 54224a6229eSrie */ 54302ca3e02Srie if (lret && pret) { 54424a6229eSrie /* LINTED */ 54524a6229eSrie nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 5467c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_RELOCATING; 5477c478bd9Sstevel@tonic-gate 5487c478bd9Sstevel@tonic-gate return (1); 54902ca3e02Srie } 55002ca3e02Srie 5517c478bd9Sstevel@tonic-gate return (0); 5527c478bd9Sstevel@tonic-gate } 5537c478bd9Sstevel@tonic-gate 5547c478bd9Sstevel@tonic-gate /* 5557c478bd9Sstevel@tonic-gate * Inherit the first rejection message for possible later diagnostics. 5567c478bd9Sstevel@tonic-gate * 5577c478bd9Sstevel@tonic-gate * Any attempt to process a file that is unsuccessful, should be accompanied 5587c478bd9Sstevel@tonic-gate * with an error diagnostic. However, some operations like searching for a 5597c478bd9Sstevel@tonic-gate * simple filename, involve trying numerous paths, and an error message for each 5607c478bd9Sstevel@tonic-gate * lookup is not required. Although a multiple search can fail, it's possible 5617c478bd9Sstevel@tonic-gate * that a file was found, but was rejected because it was the wrong type. 5627c478bd9Sstevel@tonic-gate * To satisfy these possibilities, the first failure is recorded as a rejection 5637c478bd9Sstevel@tonic-gate * message, and this message is used later for a more specific diagnostic. 5647c478bd9Sstevel@tonic-gate * 5657c478bd9Sstevel@tonic-gate * File searches are focused at load_one(), and from here a rejection descriptor 5667c478bd9Sstevel@tonic-gate * is passed down to various child routines. If these child routines can 5677c478bd9Sstevel@tonic-gate * process multiple files, then they will maintain their own rejection desc- 5687c478bd9Sstevel@tonic-gate * riptor. This is filled in for any failures, and a diagnostic produced to 5697c478bd9Sstevel@tonic-gate * reflect the failure. The child routines then employ rejection_inherit() to 5707c478bd9Sstevel@tonic-gate * pass the first rejection message back to load_one(). 5717c478bd9Sstevel@tonic-gate * 5727c478bd9Sstevel@tonic-gate * Note that the name, and rejection string must be duplicated, as the name 5737c478bd9Sstevel@tonic-gate * buffer and error string buffer (see conv_ routines) may be reused for 5747c478bd9Sstevel@tonic-gate * additional processing or rejection messages. 5757c478bd9Sstevel@tonic-gate */ 5767c478bd9Sstevel@tonic-gate void 57731fdd7caSab196087 rejection_inherit(Rej_desc *rej1, Rej_desc *rej2) 5787c478bd9Sstevel@tonic-gate { 5797c478bd9Sstevel@tonic-gate if (rej2->rej_type && (rej1->rej_type == 0)) { 5807c478bd9Sstevel@tonic-gate rej1->rej_type = rej2->rej_type; 5817c478bd9Sstevel@tonic-gate rej1->rej_info = rej2->rej_info; 5827c478bd9Sstevel@tonic-gate rej1->rej_flag = rej2->rej_flag; 5837c478bd9Sstevel@tonic-gate if (rej2->rej_name) 5847c478bd9Sstevel@tonic-gate rej1->rej_name = strdup(rej2->rej_name); 5857c478bd9Sstevel@tonic-gate if (rej2->rej_str) { 5868521e5e6Srie if ((rej1->rej_str = strdup(rej2->rej_str)) == NULL) 5877c478bd9Sstevel@tonic-gate rej1->rej_str = MSG_ORIG(MSG_EMG_ENOMEM); 5887c478bd9Sstevel@tonic-gate } 5897c478bd9Sstevel@tonic-gate } 5907c478bd9Sstevel@tonic-gate } 5917c478bd9Sstevel@tonic-gate 5927c478bd9Sstevel@tonic-gate /* 5937c478bd9Sstevel@tonic-gate * Determine the object type of a file. 5947c478bd9Sstevel@tonic-gate */ 5957c478bd9Sstevel@tonic-gate Fct * 5967c478bd9Sstevel@tonic-gate are_u_this(Rej_desc *rej, int fd, struct stat *status, const char *name) 5977c478bd9Sstevel@tonic-gate { 5987c478bd9Sstevel@tonic-gate int i; 5997c478bd9Sstevel@tonic-gate char *maddr = 0; 6007c478bd9Sstevel@tonic-gate 6017c478bd9Sstevel@tonic-gate fmap->fm_fsize = status->st_size; 6027c478bd9Sstevel@tonic-gate 6037c478bd9Sstevel@tonic-gate /* 6047c478bd9Sstevel@tonic-gate * If this is a directory (which can't be mmap()'ed) generate a precise 6057c478bd9Sstevel@tonic-gate * error message. 6067c478bd9Sstevel@tonic-gate */ 6077c478bd9Sstevel@tonic-gate if ((status->st_mode & S_IFMT) == S_IFDIR) { 6087c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 6097c478bd9Sstevel@tonic-gate rej->rej_str = strerror(EISDIR); 6107c478bd9Sstevel@tonic-gate return (0); 6117c478bd9Sstevel@tonic-gate } 6127c478bd9Sstevel@tonic-gate 6137c478bd9Sstevel@tonic-gate /* 6147c478bd9Sstevel@tonic-gate * Map in the first page of the file. When this buffer is first used, 6157c478bd9Sstevel@tonic-gate * the mapping is a single system page. This is typically enough to 6167c478bd9Sstevel@tonic-gate * inspect the ehdr and phdrs of the file, and can be reused for each 6177c478bd9Sstevel@tonic-gate * file that get loaded. If a larger mapping is required to read the 6187c478bd9Sstevel@tonic-gate * ehdr and phdrs, a new mapping is created (see elf_map_it()). This 6197c478bd9Sstevel@tonic-gate * new mapping is again used for each new file loaded. Some objects, 6207c478bd9Sstevel@tonic-gate * such as filters, only take up one page, and in this case this mapping 6217c478bd9Sstevel@tonic-gate * will suffice for the file. 6227c478bd9Sstevel@tonic-gate */ 6237c478bd9Sstevel@tonic-gate maddr = mmap(fmap->fm_maddr, fmap->fm_msize, (PROT_READ | PROT_EXEC), 6247c478bd9Sstevel@tonic-gate fmap->fm_mflags, fd, 0); 6257c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 6267c478bd9Sstevel@tonic-gate if ((maddr == MAP_FAILED) && (errno == EINVAL)) { 6277c478bd9Sstevel@tonic-gate /* 6287c478bd9Sstevel@tonic-gate * If the mapping failed, and we used MAP_ALIGN, assume we're 6297c478bd9Sstevel@tonic-gate * on a system that doesn't support this option. Try again 6307c478bd9Sstevel@tonic-gate * without MAP_ALIGN. 6317c478bd9Sstevel@tonic-gate */ 6327c478bd9Sstevel@tonic-gate if (fmap->fm_mflags & MAP_ALIGN) { 6337c478bd9Sstevel@tonic-gate rtld_flags2 |= RT_FL2_NOMALIGN; 6347c478bd9Sstevel@tonic-gate fmap_setup(); 6357c478bd9Sstevel@tonic-gate 6367c478bd9Sstevel@tonic-gate maddr = (char *)mmap(fmap->fm_maddr, fmap->fm_msize, 6377c478bd9Sstevel@tonic-gate (PROT_READ | PROT_EXEC), fmap->fm_mflags, fd, 0); 6387c478bd9Sstevel@tonic-gate } 6397c478bd9Sstevel@tonic-gate } 6407c478bd9Sstevel@tonic-gate #endif 6417c478bd9Sstevel@tonic-gate if (maddr == MAP_FAILED) { 6427c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 6437c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 6447c478bd9Sstevel@tonic-gate return (0); 6457c478bd9Sstevel@tonic-gate } 6467c478bd9Sstevel@tonic-gate 6477c478bd9Sstevel@tonic-gate /* 6487c478bd9Sstevel@tonic-gate * From now on we will re-use fmap->fm_maddr as the mapping address 6497c478bd9Sstevel@tonic-gate * so we augment the flags with MAP_FIXED and drop any MAP_ALIGN. 6507c478bd9Sstevel@tonic-gate */ 6517c478bd9Sstevel@tonic-gate fmap->fm_maddr = maddr; 6527c478bd9Sstevel@tonic-gate fmap->fm_mflags |= MAP_FIXED; 6537c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 6547c478bd9Sstevel@tonic-gate fmap->fm_mflags &= ~MAP_ALIGN; 6557c478bd9Sstevel@tonic-gate #endif 6567c478bd9Sstevel@tonic-gate 6577c478bd9Sstevel@tonic-gate /* 6587c478bd9Sstevel@tonic-gate * Search through the object vectors to determine what kind of 6597c478bd9Sstevel@tonic-gate * object we have. 6607c478bd9Sstevel@tonic-gate */ 6617c478bd9Sstevel@tonic-gate for (i = 0; vector[i]; i++) { 6627c478bd9Sstevel@tonic-gate if ((vector[i]->fct_are_u_this)(rej)) 6637c478bd9Sstevel@tonic-gate return (vector[i]); 6647c478bd9Sstevel@tonic-gate else if (rej->rej_type) { 6657c478bd9Sstevel@tonic-gate Rt_map *lmp; 6667c478bd9Sstevel@tonic-gate 6677c478bd9Sstevel@tonic-gate /* 6687c478bd9Sstevel@tonic-gate * If this object is an explicitly defined shared 6697c478bd9Sstevel@tonic-gate * object under inspection by ldd, and contains a 6707c478bd9Sstevel@tonic-gate * incompatible hardware capabilities requirement, then 6717c478bd9Sstevel@tonic-gate * inform the user, but continue processing. 6727c478bd9Sstevel@tonic-gate * 6737c478bd9Sstevel@tonic-gate * XXXX - ldd -v for any rej failure. 6747c478bd9Sstevel@tonic-gate */ 6757c478bd9Sstevel@tonic-gate if ((rej->rej_type == SGS_REJ_HWCAP_1) && 6767c478bd9Sstevel@tonic-gate (lml_main.lm_flags & LML_FLG_TRC_LDDSTUB) && 6777c478bd9Sstevel@tonic-gate ((lmp = lml_main.lm_head) != 0) && 6787c478bd9Sstevel@tonic-gate (FLAGS1(lmp) & FL1_RT_LDDSTUB) && 6797c478bd9Sstevel@tonic-gate (NEXT(lmp) == 0)) { 6807c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_GEN_HWCAP_1), 6817c478bd9Sstevel@tonic-gate name, rej->rej_str); 6827c478bd9Sstevel@tonic-gate return (vector[i]); 6837c478bd9Sstevel@tonic-gate } 6847c478bd9Sstevel@tonic-gate return (0); 6857c478bd9Sstevel@tonic-gate } 6867c478bd9Sstevel@tonic-gate } 6877c478bd9Sstevel@tonic-gate 6887c478bd9Sstevel@tonic-gate /* 6897c478bd9Sstevel@tonic-gate * Unknown file type. 6907c478bd9Sstevel@tonic-gate */ 6917c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_UNKFILE; 6927c478bd9Sstevel@tonic-gate return (0); 6937c478bd9Sstevel@tonic-gate } 6947c478bd9Sstevel@tonic-gate 6957c478bd9Sstevel@tonic-gate /* 6960aa3cd4dSrie * Helper routine for is_so_matched() that consolidates matching a path name, 6970aa3cd4dSrie * or file name component of a link-map name. 6987c478bd9Sstevel@tonic-gate */ 6997c478bd9Sstevel@tonic-gate static int 7000aa3cd4dSrie _is_so_matched(const char *name, const char *str, int path) 7017c478bd9Sstevel@tonic-gate { 7027c478bd9Sstevel@tonic-gate const char *_str; 7037c478bd9Sstevel@tonic-gate 7040aa3cd4dSrie if ((path == 0) && ((_str = strrchr(str, '/')) != NULL)) 7057c478bd9Sstevel@tonic-gate _str++; 7067c478bd9Sstevel@tonic-gate else 7077c478bd9Sstevel@tonic-gate _str = str; 7087c478bd9Sstevel@tonic-gate 7097c478bd9Sstevel@tonic-gate return (strcmp(name, _str)); 7107c478bd9Sstevel@tonic-gate } 7117c478bd9Sstevel@tonic-gate 7120aa3cd4dSrie /* 7130aa3cd4dSrie * Determine whether a search name matches one of the names associated with a 7140aa3cd4dSrie * link-map. A link-map contains several names: 7150aa3cd4dSrie * 7160aa3cd4dSrie * . a NAME() - typically the full pathname of an object that has been 7170aa3cd4dSrie * loaded. For example, when looking for the dependency "libc.so.1", a 7180aa3cd4dSrie * search path is applied, with the eventual NAME() being "/lib/ld.so.1". 7190aa3cd4dSrie * The name of the executable is typically a simple filename, such as 7200aa3cd4dSrie * "main", as this is the name passed to exec() to start the process. 7210aa3cd4dSrie * 7220aa3cd4dSrie * . a PATHNAME() - this is maintained if the resolved NAME() is different 7230aa3cd4dSrie * to NAME(), ie. the original name is a symbolic link. This is also 7240aa3cd4dSrie * the resolved full pathname for a dynamic executable. 7250aa3cd4dSrie * 7260aa3cd4dSrie * . a list of ALIAS() names - these are alternative names by which the 7270aa3cd4dSrie * object has been found, ie. when dependencies are loaded through a 7280aa3cd4dSrie * variety of different symbolic links. 7290aa3cd4dSrie * 7300aa3cd4dSrie * The name pattern matching can differ depending on whether we are looking 7310aa3cd4dSrie * for a full path name (path != 0), or a simple file name (path == 0). Full 7320aa3cd4dSrie * path names typically match NAME() or PATHNAME() entries, so these link-map 7330aa3cd4dSrie * names are inspected first when a full path name is being searched for. 7340aa3cd4dSrie * Simple file names typically match ALIAS() names, so these link-map names are 7350aa3cd4dSrie * inspected first when a simple file name is being searched for. 7360aa3cd4dSrie * 7370aa3cd4dSrie * For all full path name searches, the link-map names are taken as is. For 7380aa3cd4dSrie * simple file name searches, only the file name component of any link-map 7390aa3cd4dSrie * names are used for comparison. 7400aa3cd4dSrie */ 7417c478bd9Sstevel@tonic-gate static Rt_map * 7420aa3cd4dSrie is_so_matched(Rt_map *lmp, const char *name, int path) 7437c478bd9Sstevel@tonic-gate { 7447c478bd9Sstevel@tonic-gate Aliste off; 7457c478bd9Sstevel@tonic-gate const char **cpp; 7467c478bd9Sstevel@tonic-gate 7477c478bd9Sstevel@tonic-gate /* 7480aa3cd4dSrie * A pathname is typically going to match a NAME() or PATHNAME(), so 7490aa3cd4dSrie * check these first. 7507c478bd9Sstevel@tonic-gate */ 7510aa3cd4dSrie if (path) { 7520aa3cd4dSrie if (strcmp(name, NAME(lmp)) == 0) 7537c478bd9Sstevel@tonic-gate return (lmp); 7547c478bd9Sstevel@tonic-gate 7557c478bd9Sstevel@tonic-gate if (PATHNAME(lmp) != NAME(lmp)) { 7560aa3cd4dSrie if (strcmp(name, PATHNAME(lmp)) == 0) 7577c478bd9Sstevel@tonic-gate return (lmp); 7587c478bd9Sstevel@tonic-gate } 7590aa3cd4dSrie } 7600aa3cd4dSrie 7610aa3cd4dSrie /* 7620aa3cd4dSrie * Typically, dependencies are specified as simple file names 7630aa3cd4dSrie * (DT_NEEDED == libc.so.1), which are expanded to full pathnames to 7640aa3cd4dSrie * open the file. The full pathname is NAME(), and the original name 7650aa3cd4dSrie * is maintained on the ALIAS() list. 7660aa3cd4dSrie * 7670aa3cd4dSrie * If this is a simple filename, or a pathname has failed to match the 7680aa3cd4dSrie * NAME() and PATHNAME() check above, look through the ALIAS() list. 7690aa3cd4dSrie */ 7700aa3cd4dSrie for (ALIST_TRAVERSE(ALIAS(lmp), off, cpp)) { 7710aa3cd4dSrie /* 7720aa3cd4dSrie * If we're looking for a simple filename, _is_so_matched() 7730aa3cd4dSrie * will reduce the ALIAS name to its simple name. 7740aa3cd4dSrie */ 7750aa3cd4dSrie if (_is_so_matched(name, *cpp, path) == 0) 7760aa3cd4dSrie return (lmp); 7770aa3cd4dSrie } 7780aa3cd4dSrie 7790aa3cd4dSrie /* 7800aa3cd4dSrie * Finally, if this is a simple file name, and any ALIAS() search has 7810aa3cd4dSrie * been completed, match the simple file name of NAME() and PATHNAME(). 7820aa3cd4dSrie */ 7830aa3cd4dSrie if (path == 0) { 7840aa3cd4dSrie if (_is_so_matched(name, NAME(lmp), 0) == 0) 7850aa3cd4dSrie return (lmp); 7860aa3cd4dSrie 7870aa3cd4dSrie if (PATHNAME(lmp) != NAME(lmp)) { 7880aa3cd4dSrie if (_is_so_matched(name, PATHNAME(lmp), 0) == 0) 7890aa3cd4dSrie return (lmp); 7900aa3cd4dSrie } 7910aa3cd4dSrie } 7920aa3cd4dSrie 7937c478bd9Sstevel@tonic-gate return (0); 7947c478bd9Sstevel@tonic-gate } 7957c478bd9Sstevel@tonic-gate 7960aa3cd4dSrie /* 7970aa3cd4dSrie * Files are opened by ld.so.1 to satisfy dependencies, filtees and dlopen() 7980aa3cd4dSrie * requests. Each request investigates the file based upon the callers 7990aa3cd4dSrie * environment, and once a full path name has been established a check is made 8000aa3cd4dSrie * against the FullpathNode AVL tree and a device/inode check, to ensure the 8010aa3cd4dSrie * same file isn't mapped multiple times. See file_open(). 8020aa3cd4dSrie * 8030aa3cd4dSrie * However, there are one of two cases where a test for an existing file name 8040aa3cd4dSrie * needs to be carried out, such as dlopen(NOLOAD) requests, dldump() requests, 8050aa3cd4dSrie * and as a final fallback to dependency loading. These requests are handled 8060aa3cd4dSrie * by is_so_loaded(). 8070aa3cd4dSrie * 8080aa3cd4dSrie * A traversal through the callers link-map list is carried out, and from each 8090aa3cd4dSrie * link-map, a comparison is made against all of the various names by which the 8100aa3cd4dSrie * object has been referenced. The subroutine, is_so_matched() compares the 8110aa3cd4dSrie * link-map names against the name being searched for. Whether the search name 8120aa3cd4dSrie * is a full path name or a simple file name, governs what comparisons are made. 8130aa3cd4dSrie * 8140aa3cd4dSrie * A full path name, which is a fully resolved path name that starts with a "/" 8150aa3cd4dSrie * character, or a relative path name that includes a "/" character, must match 8160aa3cd4dSrie * the link-map names explicitly. A simple file name, which is any name *not* 8170aa3cd4dSrie * containing a "/" character, are matched against the file name component of 8180aa3cd4dSrie * any link-map names. 8190aa3cd4dSrie */ 8207c478bd9Sstevel@tonic-gate Rt_map * 8210aa3cd4dSrie is_so_loaded(Lm_list *lml, const char *name) 8227c478bd9Sstevel@tonic-gate { 8237c478bd9Sstevel@tonic-gate Rt_map *lmp; 8247c478bd9Sstevel@tonic-gate avl_index_t where; 8257c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 8267c478bd9Sstevel@tonic-gate Aliste off; 8270aa3cd4dSrie int path = 0; 8287c478bd9Sstevel@tonic-gate 8297c478bd9Sstevel@tonic-gate /* 8300aa3cd4dSrie * If the name is a full path name, first determine if the path name is 8310aa3cd4dSrie * registered in the FullpathNode AVL tree. 8327c478bd9Sstevel@tonic-gate */ 8330aa3cd4dSrie if ((name[0] == '/') && 8347c478bd9Sstevel@tonic-gate ((lmp = fpavl_loaded(lml, name, &where)) != NULL) && 8357c478bd9Sstevel@tonic-gate ((FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) == 0)) 8367c478bd9Sstevel@tonic-gate return (lmp); 8377c478bd9Sstevel@tonic-gate 8387c478bd9Sstevel@tonic-gate /* 8390aa3cd4dSrie * Determine whether the name is a simple file name, or a path name. 8407c478bd9Sstevel@tonic-gate */ 8410aa3cd4dSrie if (strchr(name, '/')) 8420aa3cd4dSrie path++; 8437c478bd9Sstevel@tonic-gate 8447c478bd9Sstevel@tonic-gate /* 8457c478bd9Sstevel@tonic-gate * Loop through the callers link-map lists. 8467c478bd9Sstevel@tonic-gate */ 8477c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(lml->lm_lists, off, lmc)) { 8487c478bd9Sstevel@tonic-gate for (lmp = lmc->lc_head; lmp; lmp = (Rt_map *)NEXT(lmp)) { 8497c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) 8507c478bd9Sstevel@tonic-gate continue; 8517c478bd9Sstevel@tonic-gate 8520aa3cd4dSrie if (is_so_matched(lmp, name, path)) 8537c478bd9Sstevel@tonic-gate return (lmp); 8547c478bd9Sstevel@tonic-gate } 8557c478bd9Sstevel@tonic-gate } 8567c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 8577c478bd9Sstevel@tonic-gate } 8587c478bd9Sstevel@tonic-gate 8597c478bd9Sstevel@tonic-gate /* 8607c478bd9Sstevel@tonic-gate * Tracing is enabled by the LD_TRACE_LOADED_OPTIONS environment variable which 8617c478bd9Sstevel@tonic-gate * is normally set from ldd(1). For each link map we load, print the load name 8627c478bd9Sstevel@tonic-gate * and the full pathname of the shared object. 8637c478bd9Sstevel@tonic-gate */ 8647c478bd9Sstevel@tonic-gate /* ARGSUSED4 */ 8657c478bd9Sstevel@tonic-gate static void 8667c478bd9Sstevel@tonic-gate trace_so(Rt_map *clmp, Rej_desc *rej, const char *name, const char *path, 8677c478bd9Sstevel@tonic-gate int alter, const char *nfound) 8687c478bd9Sstevel@tonic-gate { 8697c478bd9Sstevel@tonic-gate const char *str = MSG_ORIG(MSG_STR_EMPTY); 8707c478bd9Sstevel@tonic-gate const char *reject = MSG_ORIG(MSG_STR_EMPTY); 8717c478bd9Sstevel@tonic-gate char _reject[PATH_MAX]; 8727c478bd9Sstevel@tonic-gate 8737c478bd9Sstevel@tonic-gate /* 8747c478bd9Sstevel@tonic-gate * The first time through trace_so() will only have lddstub on the 8757c478bd9Sstevel@tonic-gate * link-map list and the preloaded shared object is supplied as "path". 8767c478bd9Sstevel@tonic-gate * As we don't want to print this shared object as a dependency, but 8777c478bd9Sstevel@tonic-gate * instead inspect *its* dependencies, return. 8787c478bd9Sstevel@tonic-gate */ 8797c478bd9Sstevel@tonic-gate if (FLAGS1(clmp) & FL1_RT_LDDSTUB) 8807c478bd9Sstevel@tonic-gate return; 8817c478bd9Sstevel@tonic-gate 8827c478bd9Sstevel@tonic-gate /* 8837c478bd9Sstevel@tonic-gate * Without any rejection info, this is a supplied not-found condition. 8847c478bd9Sstevel@tonic-gate */ 8857c478bd9Sstevel@tonic-gate if (rej && (rej->rej_type == 0)) { 8867c478bd9Sstevel@tonic-gate (void) printf(nfound, name); 8877c478bd9Sstevel@tonic-gate return; 8887c478bd9Sstevel@tonic-gate } 8897c478bd9Sstevel@tonic-gate 8907c478bd9Sstevel@tonic-gate /* 8917c478bd9Sstevel@tonic-gate * If rejection information exists then establish what object was 8927c478bd9Sstevel@tonic-gate * found and the reason for its rejection. 8937c478bd9Sstevel@tonic-gate */ 8947c478bd9Sstevel@tonic-gate if (rej) { 8957c478bd9Sstevel@tonic-gate /* LINTED */ 8967c478bd9Sstevel@tonic-gate (void) snprintf(_reject, PATH_MAX, 8975aefb655Srie MSG_INTL(ldd_reject[rej->rej_type]), conv_reject_desc(rej)); 8987c478bd9Sstevel@tonic-gate if (rej->rej_name) 8997c478bd9Sstevel@tonic-gate path = rej->rej_name; 9007c478bd9Sstevel@tonic-gate reject = (char *)_reject; 9017c478bd9Sstevel@tonic-gate 9027c478bd9Sstevel@tonic-gate /* 9037c478bd9Sstevel@tonic-gate * Was an alternative pathname defined (from a configuration 9047c478bd9Sstevel@tonic-gate * file). 9057c478bd9Sstevel@tonic-gate */ 9067c478bd9Sstevel@tonic-gate if (rej->rej_flag & FLG_FD_ALTER) 9077c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 9087c478bd9Sstevel@tonic-gate } else { 9097c478bd9Sstevel@tonic-gate if (alter) 9107c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 9117c478bd9Sstevel@tonic-gate } 9127c478bd9Sstevel@tonic-gate 9137c478bd9Sstevel@tonic-gate /* 9147c478bd9Sstevel@tonic-gate * If the load name isn't a full pathname print its associated pathname 9157c478bd9Sstevel@tonic-gate * together with all the other information we've gathered. 9167c478bd9Sstevel@tonic-gate */ 9177c478bd9Sstevel@tonic-gate if (*name == '/') 9187c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), path, str, reject); 9197c478bd9Sstevel@tonic-gate else 920*7247f888Srie (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), name, path, str, 921*7247f888Srie reject); 9227c478bd9Sstevel@tonic-gate } 9237c478bd9Sstevel@tonic-gate 9247c478bd9Sstevel@tonic-gate 9257c478bd9Sstevel@tonic-gate /* 9267c478bd9Sstevel@tonic-gate * Establish a link-map mode, initializing it if it has just been loaded, or 9277c478bd9Sstevel@tonic-gate * potentially updating it if it already exists. 9287c478bd9Sstevel@tonic-gate */ 9297c478bd9Sstevel@tonic-gate int 9307c478bd9Sstevel@tonic-gate update_mode(Rt_map *lmp, int omode, int nmode) 9317c478bd9Sstevel@tonic-gate { 932dffec89cSrie Lm_list *lml = LIST(lmp); 9337c478bd9Sstevel@tonic-gate int pmode = 0; 9347c478bd9Sstevel@tonic-gate 9357c478bd9Sstevel@tonic-gate /* 9367c478bd9Sstevel@tonic-gate * A newly loaded object hasn't had its mode set yet. Modes are used to 9377c478bd9Sstevel@tonic-gate * load dependencies, so don't propagate any parent or no-load flags, as 9387c478bd9Sstevel@tonic-gate * these would adversely affect this objects ability to load any of its 9397c478bd9Sstevel@tonic-gate * dependencies that aren't already loaded. RTLD_FIRST is applicable to 9407c478bd9Sstevel@tonic-gate * this objects handle creation only, and should not be propagated. 9417c478bd9Sstevel@tonic-gate */ 9427c478bd9Sstevel@tonic-gate if ((FLAGS(lmp) & FLG_RT_MODESET) == 0) { 9437c478bd9Sstevel@tonic-gate MODE(lmp) |= nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST); 9447c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_MODESET; 9457c478bd9Sstevel@tonic-gate return (1); 9467c478bd9Sstevel@tonic-gate } 9477c478bd9Sstevel@tonic-gate 9487c478bd9Sstevel@tonic-gate /* 9497c478bd9Sstevel@tonic-gate * Establish any new overriding modes. RTLD_LAZY and RTLD_NOW should be 9507c478bd9Sstevel@tonic-gate * represented individually (this is historic, as these two flags were 9517c478bd9Sstevel@tonic-gate * the only flags originally available to dlopen()). Other flags are 9527c478bd9Sstevel@tonic-gate * accumulative, but have a hierarchy of preference. 9537c478bd9Sstevel@tonic-gate */ 9547c478bd9Sstevel@tonic-gate if ((omode & RTLD_LAZY) && (nmode & RTLD_NOW)) { 9557c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_LAZY; 9567c478bd9Sstevel@tonic-gate pmode |= RTLD_NOW; 9577c478bd9Sstevel@tonic-gate } 9587c478bd9Sstevel@tonic-gate 9597c478bd9Sstevel@tonic-gate pmode |= ((~omode & nmode) & 9607c478bd9Sstevel@tonic-gate (RTLD_GLOBAL | RTLD_WORLD | RTLD_NODELETE)); 9617c478bd9Sstevel@tonic-gate if (pmode) { 9625aefb655Srie DBG_CALL(Dbg_file_mode_promote(lmp, pmode)); 9637c478bd9Sstevel@tonic-gate MODE(lmp) |= pmode; 9647c478bd9Sstevel@tonic-gate } 9657c478bd9Sstevel@tonic-gate 9667c478bd9Sstevel@tonic-gate /* 9677c478bd9Sstevel@tonic-gate * If this load is an RTLD_NOW request and the object has already been 9687c478bd9Sstevel@tonic-gate * loaded non-RTLD_NOW, append this object to the relocation-now list 9697c478bd9Sstevel@tonic-gate * of the objects associated control list. Note, if the object hasn't 9707c478bd9Sstevel@tonic-gate * yet been relocated, setting its MODE() to RTLD_NOW will establish 9717c478bd9Sstevel@tonic-gate * full relocation processing when it eventually gets relocated. 9727c478bd9Sstevel@tonic-gate */ 9737c478bd9Sstevel@tonic-gate if ((pmode & RTLD_NOW) && 9747c478bd9Sstevel@tonic-gate (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))) { 9757c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 9767c478bd9Sstevel@tonic-gate 9777c478bd9Sstevel@tonic-gate /* LINTED */ 9787c478bd9Sstevel@tonic-gate lmc = (Lm_cntl *)((char *)(LIST(lmp)->lm_lists) + CNTL(lmp)); 9797c478bd9Sstevel@tonic-gate (void) alist_append(&(lmc->lc_now), &lmp, sizeof (Rt_map *), 9807c478bd9Sstevel@tonic-gate AL_CNT_LMNOW); 9817c478bd9Sstevel@tonic-gate } 9827c478bd9Sstevel@tonic-gate 9837c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 9847c478bd9Sstevel@tonic-gate /* 9857c478bd9Sstevel@tonic-gate * For patch backward compatibility the following .init collection 9867c478bd9Sstevel@tonic-gate * is disabled. 9877c478bd9Sstevel@tonic-gate */ 9887c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 9897c478bd9Sstevel@tonic-gate return (pmode); 9907c478bd9Sstevel@tonic-gate #endif 9917c478bd9Sstevel@tonic-gate 9927c478bd9Sstevel@tonic-gate /* 993dffec89cSrie * If this objects .init has been collected but has not yet been called, 994dffec89cSrie * it may be necessary to reevaluate the object using tsort(). For 9957c478bd9Sstevel@tonic-gate * example, a new dlopen() hierarchy may bind to uninitialized objects 9967c478bd9Sstevel@tonic-gate * that are already loaded, or a dlopen(RTLD_NOW) can establish new 9977c478bd9Sstevel@tonic-gate * bindings between already loaded objects that require the tsort() 998dffec89cSrie * information be recomputed. If however, no new objects have been 999dffec89cSrie * added to the process, and this object hasn't been promoted, don't 1000dffec89cSrie * bother reevaluating the .init. The present tsort() information is 1001dffec89cSrie * probably as accurate as necessary, and by not establishing a parallel 1002dffec89cSrie * tsort() we can help reduce the amount of recursion possible between 1003dffec89cSrie * .inits. 10047c478bd9Sstevel@tonic-gate */ 1005dffec89cSrie if (((FLAGS(lmp) & 1006dffec89cSrie (FLG_RT_INITCLCT | FLG_RT_INITCALL)) == FLG_RT_INITCLCT) && 1007dffec89cSrie ((lml->lm_flags & LML_FLG_OBJADDED) || ((pmode & RTLD_NOW) && 1008dffec89cSrie (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))))) { 10097c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_INITCLCT; 10107c478bd9Sstevel@tonic-gate LIST(lmp)->lm_init++; 1011dffec89cSrie LIST(lmp)->lm_flags |= LML_FLG_OBJREEVAL; 10127c478bd9Sstevel@tonic-gate } 10137c478bd9Sstevel@tonic-gate 10147c478bd9Sstevel@tonic-gate return (pmode); 10157c478bd9Sstevel@tonic-gate } 10167c478bd9Sstevel@tonic-gate 10177c478bd9Sstevel@tonic-gate /* 10187c478bd9Sstevel@tonic-gate * Determine whether an alias name already exists, and if not create one. This 10197c478bd9Sstevel@tonic-gate * is typically used to retain dependency names, such as "libc.so.1", which 10207c478bd9Sstevel@tonic-gate * would have been expanded to full path names when they were loaded. The 10217c478bd9Sstevel@tonic-gate * full path names (NAME() and possibly PATHNAME()) are maintained as Fullpath 10227c478bd9Sstevel@tonic-gate * AVL nodes, and thus would have been matched by fpavl_loaded() during 10237c478bd9Sstevel@tonic-gate * file_open(). 10247c478bd9Sstevel@tonic-gate */ 10257c478bd9Sstevel@tonic-gate int 10267c478bd9Sstevel@tonic-gate append_alias(Rt_map *lmp, const char *str, int *added) 10277c478bd9Sstevel@tonic-gate { 10287c478bd9Sstevel@tonic-gate Aliste off; 10297c478bd9Sstevel@tonic-gate char **cpp, *cp; 10307c478bd9Sstevel@tonic-gate 10317c478bd9Sstevel@tonic-gate /* 10327c478bd9Sstevel@tonic-gate * Determine if this filename is already on the alias list. 10337c478bd9Sstevel@tonic-gate */ 10347c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(ALIAS(lmp), off, cpp)) { 10357c478bd9Sstevel@tonic-gate if (strcmp(*cpp, str) == 0) 10367c478bd9Sstevel@tonic-gate return (1); 10377c478bd9Sstevel@tonic-gate } 10387c478bd9Sstevel@tonic-gate 10397c478bd9Sstevel@tonic-gate /* 10407c478bd9Sstevel@tonic-gate * This is a new alias, append it to the alias list. 10417c478bd9Sstevel@tonic-gate */ 10428521e5e6Srie if ((cp = strdup(str)) == NULL) 10437c478bd9Sstevel@tonic-gate return (0); 10447c478bd9Sstevel@tonic-gate 10457c478bd9Sstevel@tonic-gate if (alist_append(&ALIAS(lmp), &cp, sizeof (char *), 10467c478bd9Sstevel@tonic-gate AL_CNT_ALIAS) == 0) { 10477c478bd9Sstevel@tonic-gate free(cp); 10487c478bd9Sstevel@tonic-gate return (0); 10497c478bd9Sstevel@tonic-gate } 10507c478bd9Sstevel@tonic-gate if (added) 10517c478bd9Sstevel@tonic-gate *added = 1; 10527c478bd9Sstevel@tonic-gate return (1); 10537c478bd9Sstevel@tonic-gate } 10547c478bd9Sstevel@tonic-gate 10557c478bd9Sstevel@tonic-gate /* 10567c478bd9Sstevel@tonic-gate * Determine whether a file is already loaded by comparing device and inode 10577c478bd9Sstevel@tonic-gate * values. 10587c478bd9Sstevel@tonic-gate */ 10597c478bd9Sstevel@tonic-gate static Rt_map * 10607c478bd9Sstevel@tonic-gate is_devinode_loaded(struct stat *status, Lm_list *lml, const char *name, 10617c478bd9Sstevel@tonic-gate uint_t flags) 10627c478bd9Sstevel@tonic-gate { 10637c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 10647c478bd9Sstevel@tonic-gate Aliste off; 10657c478bd9Sstevel@tonic-gate 10667c478bd9Sstevel@tonic-gate /* 10677c478bd9Sstevel@tonic-gate * If this is an auditor, it will have been opened on a new link-map. 10687c478bd9Sstevel@tonic-gate * To prevent multiple occurrances of the same auditor on multiple 10697c478bd9Sstevel@tonic-gate * link-maps, search the head of each link-map list and see if this 10707c478bd9Sstevel@tonic-gate * object is already loaded as an auditor. 10717c478bd9Sstevel@tonic-gate */ 10727c478bd9Sstevel@tonic-gate if (flags & FLG_RT_AUDIT) { 10737c478bd9Sstevel@tonic-gate Lm_list * lml; 10747c478bd9Sstevel@tonic-gate Listnode * lnp; 10757c478bd9Sstevel@tonic-gate 10767c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(&dynlm_list, lnp, lml)) { 10777c478bd9Sstevel@tonic-gate Rt_map *nlmp = lml->lm_head; 10787c478bd9Sstevel@tonic-gate 10797c478bd9Sstevel@tonic-gate if (nlmp && ((FLAGS(nlmp) & 10807c478bd9Sstevel@tonic-gate (FLG_RT_AUDIT | FLG_RT_DELETE)) == FLG_RT_AUDIT) && 10817c478bd9Sstevel@tonic-gate (STDEV(nlmp) == status->st_dev) && 10827c478bd9Sstevel@tonic-gate (STINO(nlmp) == status->st_ino)) 10837c478bd9Sstevel@tonic-gate return (nlmp); 10847c478bd9Sstevel@tonic-gate } 10857c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 10867c478bd9Sstevel@tonic-gate } 10877c478bd9Sstevel@tonic-gate 10887c478bd9Sstevel@tonic-gate /* 10897c478bd9Sstevel@tonic-gate * If the file has been found determine from the new files status 10907c478bd9Sstevel@tonic-gate * information if this file is actually linked to one we already have 10917c478bd9Sstevel@tonic-gate * mapped. This catches symlink names not caught by is_so_loaded(). 10927c478bd9Sstevel@tonic-gate */ 10937c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(lml->lm_lists, off, lmc)) { 10947c478bd9Sstevel@tonic-gate Rt_map *nlmp; 10957c478bd9Sstevel@tonic-gate 10967c478bd9Sstevel@tonic-gate for (nlmp = lmc->lc_head; nlmp; nlmp = (Rt_map *)NEXT(nlmp)) { 10977c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_DELETE) || 10987c478bd9Sstevel@tonic-gate (FLAGS1(nlmp) & FL1_RT_LDDSTUB)) 10997c478bd9Sstevel@tonic-gate continue; 11007c478bd9Sstevel@tonic-gate 11017c478bd9Sstevel@tonic-gate if ((STDEV(nlmp) != status->st_dev) || 11027c478bd9Sstevel@tonic-gate (STINO(nlmp) != status->st_ino)) 11037c478bd9Sstevel@tonic-gate continue; 11047c478bd9Sstevel@tonic-gate 11057c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_VERBOSE) { 1106*7247f888Srie /* BEGIN CSTYLED */ 11077c478bd9Sstevel@tonic-gate if (*name == '/') 11087c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 11097c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 11107c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 11117c478bd9Sstevel@tonic-gate else 11127c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 11137c478bd9Sstevel@tonic-gate name, NAME(nlmp), 11147c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 11157c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 1116*7247f888Srie /* END CSTYLED */ 11177c478bd9Sstevel@tonic-gate } 11187c478bd9Sstevel@tonic-gate return (nlmp); 11197c478bd9Sstevel@tonic-gate } 11207c478bd9Sstevel@tonic-gate } 11217c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 11227c478bd9Sstevel@tonic-gate } 11237c478bd9Sstevel@tonic-gate 11247c478bd9Sstevel@tonic-gate /* 11257c478bd9Sstevel@tonic-gate * Generate any error messages indicating a file could not be found. When 11267c478bd9Sstevel@tonic-gate * preloading or auditing a secure application, it can be a little more helpful 11277c478bd9Sstevel@tonic-gate * to indicate that a search of secure directories has failed, so adjust the 11287c478bd9Sstevel@tonic-gate * messages accordingly. 11297c478bd9Sstevel@tonic-gate */ 11307c478bd9Sstevel@tonic-gate void 11317c478bd9Sstevel@tonic-gate file_notfound(Lm_list *lml, const char *name, Rt_map *clmp, uint_t flags, 11327c478bd9Sstevel@tonic-gate Rej_desc * rej) 11337c478bd9Sstevel@tonic-gate { 11347c478bd9Sstevel@tonic-gate int secure = 0; 11357c478bd9Sstevel@tonic-gate 11367c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SECURE) && 11377c478bd9Sstevel@tonic-gate (flags & (FLG_RT_PRELOAD | FLG_RT_AUDIT))) 11387c478bd9Sstevel@tonic-gate secure++; 11397c478bd9Sstevel@tonic-gate 11407c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 11417c478bd9Sstevel@tonic-gate /* 11427c478bd9Sstevel@tonic-gate * Under ldd(1), auxiliary filtees that can't be loaded are 11437c478bd9Sstevel@tonic-gate * ignored, unless verbose errors are requested. 11447c478bd9Sstevel@tonic-gate */ 11457c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SILENCERR) && 11467c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_TRC_VERBOSE) == 0)) 11477c478bd9Sstevel@tonic-gate return; 11487c478bd9Sstevel@tonic-gate 11497c478bd9Sstevel@tonic-gate if (secure) 11507c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 11517c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_SEC_NFOUND)); 11527c478bd9Sstevel@tonic-gate else 11537c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 11547c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_NFOUND)); 11557c478bd9Sstevel@tonic-gate return; 11567c478bd9Sstevel@tonic-gate } 11577c478bd9Sstevel@tonic-gate 11587c478bd9Sstevel@tonic-gate if (rej->rej_type) { 11595aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(err_reject[rej->rej_type]), 11607c478bd9Sstevel@tonic-gate rej->rej_name ? rej->rej_name : MSG_INTL(MSG_STR_UNKNOWN), 11615aefb655Srie conv_reject_desc(rej)); 11627c478bd9Sstevel@tonic-gate return; 11637c478bd9Sstevel@tonic-gate } 11647c478bd9Sstevel@tonic-gate 11657c478bd9Sstevel@tonic-gate if (secure) 11665aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SEC_OPEN), name); 11677c478bd9Sstevel@tonic-gate else 11685aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), name, 11697c478bd9Sstevel@tonic-gate strerror(ENOENT)); 11707c478bd9Sstevel@tonic-gate } 11717c478bd9Sstevel@tonic-gate 11727c478bd9Sstevel@tonic-gate static int 11737c478bd9Sstevel@tonic-gate file_open(int err, Lm_list *lml, const char *oname, const char *nname, 11747c478bd9Sstevel@tonic-gate Rt_map *clmp, uint_t flags, Fdesc *fdesc, Rej_desc *rej) 11757c478bd9Sstevel@tonic-gate { 11767c478bd9Sstevel@tonic-gate struct stat status; 11777c478bd9Sstevel@tonic-gate Rt_map *nlmp; 11788521e5e6Srie int resolved = 0; 11797c478bd9Sstevel@tonic-gate 11807c478bd9Sstevel@tonic-gate fdesc->fd_oname = oname; 11817c478bd9Sstevel@tonic-gate 11827c478bd9Sstevel@tonic-gate if ((err == 0) && (fdesc->fd_flags & FLG_FD_ALTER)) 11835aefb655Srie DBG_CALL(Dbg_file_config_obj(lml, oname, 0, nname)); 11847c478bd9Sstevel@tonic-gate 11857c478bd9Sstevel@tonic-gate /* 11867c478bd9Sstevel@tonic-gate * If we're dealing with a full pathname, determine whether this 11877c478bd9Sstevel@tonic-gate * pathname is already known. Other pathnames fall through to the 11887c478bd9Sstevel@tonic-gate * dev/inode check, as even though the pathname may look the same as 11897c478bd9Sstevel@tonic-gate * one previously used, the process may have changed directory. 11907c478bd9Sstevel@tonic-gate */ 11917c478bd9Sstevel@tonic-gate if ((err == 0) && (nname[0] == '/')) { 11927c478bd9Sstevel@tonic-gate if ((nlmp = fpavl_loaded(lml, nname, 11937c478bd9Sstevel@tonic-gate &(fdesc->fd_avlwhere))) != NULL) { 11947c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 11957c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 11967c478bd9Sstevel@tonic-gate return (1); 11977c478bd9Sstevel@tonic-gate } 11987c478bd9Sstevel@tonic-gate } 11997c478bd9Sstevel@tonic-gate 12007c478bd9Sstevel@tonic-gate if ((err == 0) && ((stat(nname, &status)) != -1)) { 12017c478bd9Sstevel@tonic-gate char path[PATH_MAX]; 12027c478bd9Sstevel@tonic-gate int fd, size, added; 12037c478bd9Sstevel@tonic-gate 12047c478bd9Sstevel@tonic-gate /* 12057c478bd9Sstevel@tonic-gate * If this path has been constructed as part of expanding a 12068521e5e6Srie * HWCAP directory, ignore any subdirectories. As this is a 12078521e5e6Srie * silent failure, where no rejection message is created, free 12088521e5e6Srie * the original name to simplify the life of the caller. For 12098521e5e6Srie * any other reference that expands to a directory, fall through 12108521e5e6Srie * to contruct a meaningful rejection message. 12117c478bd9Sstevel@tonic-gate */ 12127c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) && 12138521e5e6Srie ((status.st_mode & S_IFMT) == S_IFDIR)) { 12148521e5e6Srie free((void *)nname); 12157c478bd9Sstevel@tonic-gate return (0); 12168521e5e6Srie } 12177c478bd9Sstevel@tonic-gate 12187c478bd9Sstevel@tonic-gate /* 12197c478bd9Sstevel@tonic-gate * Resolve the filename and determine whether the resolved name 12207c478bd9Sstevel@tonic-gate * is already known. Typically, the previous fpavl_loaded() 12217c478bd9Sstevel@tonic-gate * will have caught this, as both NAME() and PATHNAME() for a 12227c478bd9Sstevel@tonic-gate * link-map are recorded in the FullNode AVL tree. However, 12237c478bd9Sstevel@tonic-gate * instances exist where a file can be replaced (loop-back 12247c478bd9Sstevel@tonic-gate * mounts, bfu, etc.), and reference is made to the original 12257c478bd9Sstevel@tonic-gate * file through a symbolic link. By checking the pathname here, 12267c478bd9Sstevel@tonic-gate * we don't fall through to the dev/inode check and conclude 12277c478bd9Sstevel@tonic-gate * that a new file should be loaded. 12287c478bd9Sstevel@tonic-gate */ 12297c478bd9Sstevel@tonic-gate if ((nname[0] == '/') && (rtld_flags & RT_FL_EXECNAME) && 12307c478bd9Sstevel@tonic-gate ((size = resolvepath(nname, path, (PATH_MAX - 1))) > 0)) { 12317c478bd9Sstevel@tonic-gate path[size] = '\0'; 12327c478bd9Sstevel@tonic-gate 12337c478bd9Sstevel@tonic-gate if (strcmp(nname, path)) { 123424a6229eSrie if ((nlmp = 123524a6229eSrie fpavl_loaded(lml, path, 0)) != NULL) { 12367c478bd9Sstevel@tonic-gate added = 0; 12377c478bd9Sstevel@tonic-gate 12387c478bd9Sstevel@tonic-gate if (append_alias(nlmp, nname, 12397c478bd9Sstevel@tonic-gate &added) == 0) 12407c478bd9Sstevel@tonic-gate return (0); 1241*7247f888Srie /* BEGIN CSTYLED */ 12427c478bd9Sstevel@tonic-gate if (added) 124310a4fa49Srie DBG_CALL(Dbg_file_skip(LIST(clmp), 12445aefb655Srie NAME(nlmp), nname)); 1245*7247f888Srie /* END CSTYLED */ 12467c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 12477c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 12487c478bd9Sstevel@tonic-gate return (1); 12497c478bd9Sstevel@tonic-gate } 12507c478bd9Sstevel@tonic-gate 12517c478bd9Sstevel@tonic-gate /* 12527c478bd9Sstevel@tonic-gate * If this pathname hasn't been loaded, save 12537c478bd9Sstevel@tonic-gate * the resolved pathname so that it doesn't 12547c478bd9Sstevel@tonic-gate * have to be recomputed as part of fullpath() 12557c478bd9Sstevel@tonic-gate * processing. 12567c478bd9Sstevel@tonic-gate */ 12578521e5e6Srie if ((fdesc->fd_pname = strdup(path)) == NULL) 12587c478bd9Sstevel@tonic-gate return (0); 12598521e5e6Srie resolved = 1; 12607c478bd9Sstevel@tonic-gate } else { 12617c478bd9Sstevel@tonic-gate /* 12627c478bd9Sstevel@tonic-gate * If the resolved name doesn't differ from the 12637c478bd9Sstevel@tonic-gate * original, save it without duplication. 12647c478bd9Sstevel@tonic-gate * Having fd_pname set indicates that no further 12657c478bd9Sstevel@tonic-gate * resolvepath processing is necessary. 12667c478bd9Sstevel@tonic-gate */ 12677c478bd9Sstevel@tonic-gate fdesc->fd_pname = nname; 12687c478bd9Sstevel@tonic-gate } 12697c478bd9Sstevel@tonic-gate } 12707c478bd9Sstevel@tonic-gate 12717c478bd9Sstevel@tonic-gate if (nlmp = is_devinode_loaded(&status, lml, nname, flags)) { 1272c75e1b9dSrie if (flags & FLG_RT_AUDIT) { 1273c75e1b9dSrie /* 1274c75e1b9dSrie * If we've been requested to load an auditor, 1275c75e1b9dSrie * and an auditor of the same name already 1276c75e1b9dSrie * exists, then the original auditor is used. 1277c75e1b9dSrie */ 1278c75e1b9dSrie DBG_CALL(Dbg_audit_skip(LIST(clmp), 1279c75e1b9dSrie NAME(nlmp), LIST(nlmp)->lm_lmidstr)); 1280c75e1b9dSrie } else { 1281c75e1b9dSrie /* 1282c75e1b9dSrie * Otherwise, if an alternatively named file 1283c75e1b9dSrie * has been found for the same dev/inode, add 1284c75e1b9dSrie * a new name alias, and insert any alias full 1285c75e1b9dSrie * pathname in the link-map lists AVL tree. 1286c75e1b9dSrie */ 12877c478bd9Sstevel@tonic-gate added = 0; 12887c478bd9Sstevel@tonic-gate 12897c478bd9Sstevel@tonic-gate if (append_alias(nlmp, nname, &added) == 0) 12907c478bd9Sstevel@tonic-gate return (0); 12917c478bd9Sstevel@tonic-gate if (added) { 1292c75e1b9dSrie if ((nname[0] == '/') && 1293c75e1b9dSrie (fpavl_insert(lml, nlmp, 1294c75e1b9dSrie nname, 0) == 0)) 12957c478bd9Sstevel@tonic-gate return (0); 1296c75e1b9dSrie DBG_CALL(Dbg_file_skip(LIST(clmp), 1297c75e1b9dSrie NAME(nlmp), nname)); 12987c478bd9Sstevel@tonic-gate } 1299c75e1b9dSrie } 1300c75e1b9dSrie 1301c75e1b9dSrie /* 1302c75e1b9dSrie * Record in the file descriptor the existing object 1303c75e1b9dSrie * that satisfies this open request. 1304c75e1b9dSrie */ 13057c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 13067c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 13077c478bd9Sstevel@tonic-gate return (1); 13087c478bd9Sstevel@tonic-gate } 13097c478bd9Sstevel@tonic-gate 13107c478bd9Sstevel@tonic-gate if ((fd = open(nname, O_RDONLY, 0)) == -1) { 13117c478bd9Sstevel@tonic-gate /* 13127c478bd9Sstevel@tonic-gate * As the file must exist for the previous stat() to 13137c478bd9Sstevel@tonic-gate * have succeeded, record the error condition. 13147c478bd9Sstevel@tonic-gate */ 13157c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 13167c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 13177c478bd9Sstevel@tonic-gate } else { 13187c478bd9Sstevel@tonic-gate Fct *ftp; 13197c478bd9Sstevel@tonic-gate 13207c478bd9Sstevel@tonic-gate if ((ftp = are_u_this(rej, fd, &status, nname)) != 0) { 13217c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 13227c478bd9Sstevel@tonic-gate fdesc->fd_ftp = ftp; 13237c478bd9Sstevel@tonic-gate fdesc->fd_dev = status.st_dev; 13247c478bd9Sstevel@tonic-gate fdesc->fd_ino = status.st_ino; 13257c478bd9Sstevel@tonic-gate fdesc->fd_fd = fd; 13267c478bd9Sstevel@tonic-gate 13277c478bd9Sstevel@tonic-gate /* 13287c478bd9Sstevel@tonic-gate * Trace that this open has succeeded. 13297c478bd9Sstevel@tonic-gate */ 13307c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 13317c478bd9Sstevel@tonic-gate trace_so(clmp, 0, oname, nname, 1332*7247f888Srie (fdesc->fd_flags & FLG_FD_ALTER), 1333*7247f888Srie 0); 13347c478bd9Sstevel@tonic-gate } 13357c478bd9Sstevel@tonic-gate return (1); 13367c478bd9Sstevel@tonic-gate } 13377c478bd9Sstevel@tonic-gate (void) close(fd); 13387c478bd9Sstevel@tonic-gate } 13397c478bd9Sstevel@tonic-gate 13407c478bd9Sstevel@tonic-gate } else if (errno != ENOENT) { 13417c478bd9Sstevel@tonic-gate /* 13427c478bd9Sstevel@tonic-gate * If the open() failed for anything other than the file not 13437c478bd9Sstevel@tonic-gate * existing, record the error condition. 13447c478bd9Sstevel@tonic-gate */ 13457c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 13467c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 13477c478bd9Sstevel@tonic-gate } 13487c478bd9Sstevel@tonic-gate 13497c478bd9Sstevel@tonic-gate /* 13507c478bd9Sstevel@tonic-gate * Indicate any rejection. 13517c478bd9Sstevel@tonic-gate */ 13527c478bd9Sstevel@tonic-gate if (rej->rej_type) { 13538521e5e6Srie /* 13548521e5e6Srie * If this pathname was resolved and duplicated, remove the 13558521e5e6Srie * allocated name to simplify the cleanup of the callers. 13568521e5e6Srie */ 13578521e5e6Srie if (resolved) { 13588521e5e6Srie free((void *)fdesc->fd_pname); 13598521e5e6Srie fdesc->fd_pname = NULL; 13608521e5e6Srie } 13617c478bd9Sstevel@tonic-gate rej->rej_name = nname; 13627c478bd9Sstevel@tonic-gate rej->rej_flag = (fdesc->fd_flags & FLG_FD_ALTER); 13635aefb655Srie DBG_CALL(Dbg_file_rejected(lml, rej)); 13647c478bd9Sstevel@tonic-gate } 13657c478bd9Sstevel@tonic-gate return (0); 13667c478bd9Sstevel@tonic-gate } 13677c478bd9Sstevel@tonic-gate 13687c478bd9Sstevel@tonic-gate /* 13697c478bd9Sstevel@tonic-gate * Find a full pathname (it contains a "/"). 13707c478bd9Sstevel@tonic-gate */ 13717c478bd9Sstevel@tonic-gate int 13727c478bd9Sstevel@tonic-gate find_path(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 13737c478bd9Sstevel@tonic-gate Fdesc *fdesc, Rej_desc *rej) 13747c478bd9Sstevel@tonic-gate { 13757c478bd9Sstevel@tonic-gate int err = 0; 13767c478bd9Sstevel@tonic-gate 13777c478bd9Sstevel@tonic-gate /* 13787c478bd9Sstevel@tonic-gate * If directory configuration exists determine if this path is known. 13797c478bd9Sstevel@tonic-gate */ 13807c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DIRCFG) { 13817c478bd9Sstevel@tonic-gate Rtc_obj *obj; 13827c478bd9Sstevel@tonic-gate const char *aname; 13837c478bd9Sstevel@tonic-gate 13847c478bd9Sstevel@tonic-gate if ((obj = elf_config_ent(oname, (Word)elf_hash(oname), 13857c478bd9Sstevel@tonic-gate 0, &aname)) != 0) { 13867c478bd9Sstevel@tonic-gate /* 13877c478bd9Sstevel@tonic-gate * If the configuration file states that this path is a 13887c478bd9Sstevel@tonic-gate * directory, or the path is explicitly defined as 13897c478bd9Sstevel@tonic-gate * non-existent (ie. a unused platform specific 13907c478bd9Sstevel@tonic-gate * library), then go no further. 13917c478bd9Sstevel@tonic-gate */ 13927c478bd9Sstevel@tonic-gate if (obj->co_flags & RTC_OBJ_DIRENT) { 13937c478bd9Sstevel@tonic-gate err = EISDIR; 13947c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & 13957c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == 13967c478bd9Sstevel@tonic-gate RTC_OBJ_NOEXIST) { 13977c478bd9Sstevel@tonic-gate err = ENOENT; 13987c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & RTC_OBJ_ALTER) && 13997c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && (lml == &lml_main)) { 14007c478bd9Sstevel@tonic-gate int ret; 14017c478bd9Sstevel@tonic-gate 14027c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 14037c478bd9Sstevel@tonic-gate /* 14047c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. If 14057c478bd9Sstevel@tonic-gate * this fails, and the alternative is flagged 14067c478bd9Sstevel@tonic-gate * as optional, fall through to open the 14077c478bd9Sstevel@tonic-gate * original path. 14087c478bd9Sstevel@tonic-gate */ 14095aefb655Srie DBG_CALL(Dbg_libs_found(lml, aname, 14105aefb655Srie FLG_FD_ALTER)); 14117c478bd9Sstevel@tonic-gate if (((ret = file_open(0, lml, oname, aname, 14127c478bd9Sstevel@tonic-gate clmp, flags, fdesc, rej)) != 0) || 14137c478bd9Sstevel@tonic-gate ((obj->co_flags & RTC_OBJ_OPTINAL) == 0)) 14147c478bd9Sstevel@tonic-gate return (ret); 14157c478bd9Sstevel@tonic-gate 14167c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 14177c478bd9Sstevel@tonic-gate } 14187c478bd9Sstevel@tonic-gate } 14197c478bd9Sstevel@tonic-gate } 14205aefb655Srie DBG_CALL(Dbg_libs_found(lml, oname, 0)); 14217c478bd9Sstevel@tonic-gate return (file_open(err, lml, oname, oname, clmp, flags, fdesc, rej)); 14227c478bd9Sstevel@tonic-gate } 14237c478bd9Sstevel@tonic-gate 14247c478bd9Sstevel@tonic-gate /* 14257c478bd9Sstevel@tonic-gate * Find a simple filename (it doesn't contain a "/"). 14267c478bd9Sstevel@tonic-gate */ 14277c478bd9Sstevel@tonic-gate static int 14287c478bd9Sstevel@tonic-gate _find_file(Lm_list *lml, const char *oname, const char *nname, Rt_map *clmp, 14297c478bd9Sstevel@tonic-gate uint_t flags, Fdesc *fdesc, Rej_desc *rej, Pnode *dir, int aflag) 14307c478bd9Sstevel@tonic-gate { 14315aefb655Srie DBG_CALL(Dbg_libs_found(lml, nname, aflag)); 14327c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_SEARCH) && 14337c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 14347c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_PTH_TRYING), nname, aflag ? 14357c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_ALTER) : MSG_ORIG(MSG_STR_EMPTY)); 14367c478bd9Sstevel@tonic-gate } 14377c478bd9Sstevel@tonic-gate 14387c478bd9Sstevel@tonic-gate /* 14397c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're about 14407c478bd9Sstevel@tonic-gate * to go search for. The audit library may offer an alternative 14417c478bd9Sstevel@tonic-gate * dependency, or indicate that this dependency should be ignored. 14427c478bd9Sstevel@tonic-gate */ 14437c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 14447c478bd9Sstevel@tonic-gate char *aname = audit_objsearch(clmp, nname, dir->p_orig); 14457c478bd9Sstevel@tonic-gate 1446*7247f888Srie if (aname == 0) { 1447*7247f888Srie DBG_CALL(Dbg_audit_terminate(lml, nname)); 14487c478bd9Sstevel@tonic-gate return (0); 1449*7247f888Srie } 1450*7247f888Srie 1451*7247f888Srie /* 1452*7247f888Srie * Protect ourselves from auditor mischief, by copying any 1453*7247f888Srie * alternative name over the present name (the present name is 1454*7247f888Srie * maintained in a static buffer - see elf_get_so()); 1455*7247f888Srie */ 1456*7247f888Srie if (nname != aname) 1457*7247f888Srie (void) strncpy((char *)nname, aname, PATH_MAX); 14587c478bd9Sstevel@tonic-gate } 14597c478bd9Sstevel@tonic-gate return (file_open(0, lml, oname, nname, clmp, flags, fdesc, rej)); 14607c478bd9Sstevel@tonic-gate } 14617c478bd9Sstevel@tonic-gate 1462390b98b5Srie static int 14637c478bd9Sstevel@tonic-gate find_file(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 14647c478bd9Sstevel@tonic-gate Fdesc *fdesc, Rej_desc *rej, Pnode *dir, Word * strhash, size_t olen) 14657c478bd9Sstevel@tonic-gate { 14667c478bd9Sstevel@tonic-gate static Rtc_obj Obj = { 0 }; 14677c478bd9Sstevel@tonic-gate Rtc_obj * dobj; 14687c478bd9Sstevel@tonic-gate const char *nname = oname; 14697c478bd9Sstevel@tonic-gate 14707c478bd9Sstevel@tonic-gate if (dir->p_name == 0) 14717c478bd9Sstevel@tonic-gate return (0); 14727c478bd9Sstevel@tonic-gate if (dir->p_info) { 14737c478bd9Sstevel@tonic-gate dobj = (Rtc_obj *)dir->p_info; 14747c478bd9Sstevel@tonic-gate if ((dobj->co_flags & 14757c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 14767c478bd9Sstevel@tonic-gate return (0); 14777c478bd9Sstevel@tonic-gate } else 14787c478bd9Sstevel@tonic-gate dobj = 0; 14797c478bd9Sstevel@tonic-gate 14807c478bd9Sstevel@tonic-gate /* 14817c478bd9Sstevel@tonic-gate * If configuration information exists see if this directory/file 14827c478bd9Sstevel@tonic-gate * combination exists. 14837c478bd9Sstevel@tonic-gate */ 14847c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_DIRCFG) && 14857c478bd9Sstevel@tonic-gate ((dobj == 0) || (dobj->co_id != 0))) { 14867c478bd9Sstevel@tonic-gate Rtc_obj *fobj; 14877c478bd9Sstevel@tonic-gate const char *alt = 0; 14887c478bd9Sstevel@tonic-gate 14897c478bd9Sstevel@tonic-gate /* 14907c478bd9Sstevel@tonic-gate * If this pnode has not yet been searched for in the 14917c478bd9Sstevel@tonic-gate * configuration file go find it. 14927c478bd9Sstevel@tonic-gate */ 14937c478bd9Sstevel@tonic-gate if (dobj == 0) { 14947c478bd9Sstevel@tonic-gate dobj = elf_config_ent(dir->p_name, 14957c478bd9Sstevel@tonic-gate (Word)elf_hash(dir->p_name), 0, 0); 14967c478bd9Sstevel@tonic-gate if (dobj == 0) 14977c478bd9Sstevel@tonic-gate dobj = &Obj; 14987c478bd9Sstevel@tonic-gate dir->p_info = (void *)dobj; 14997c478bd9Sstevel@tonic-gate 15007c478bd9Sstevel@tonic-gate if ((dobj->co_flags & (RTC_OBJ_NOEXIST | 15017c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 15027c478bd9Sstevel@tonic-gate return (0); 15037c478bd9Sstevel@tonic-gate } 15047c478bd9Sstevel@tonic-gate 15057c478bd9Sstevel@tonic-gate /* 15067c478bd9Sstevel@tonic-gate * If we found a directory search for the file. 15077c478bd9Sstevel@tonic-gate */ 15087c478bd9Sstevel@tonic-gate if (dobj->co_id != 0) { 15097c478bd9Sstevel@tonic-gate if (*strhash == 0) 15107c478bd9Sstevel@tonic-gate *strhash = (Word)elf_hash(nname); 15117c478bd9Sstevel@tonic-gate fobj = elf_config_ent(nname, *strhash, 15127c478bd9Sstevel@tonic-gate dobj->co_id, &alt); 15137c478bd9Sstevel@tonic-gate 15147c478bd9Sstevel@tonic-gate /* 15157c478bd9Sstevel@tonic-gate * If this object specifically does not exist, or the 15167c478bd9Sstevel@tonic-gate * object can't be found in a know-all-entries 15177c478bd9Sstevel@tonic-gate * directory, continue looking. If the object does 15187c478bd9Sstevel@tonic-gate * exist determine if an alternative object exists. 15197c478bd9Sstevel@tonic-gate */ 15207c478bd9Sstevel@tonic-gate if (fobj == 0) { 15217c478bd9Sstevel@tonic-gate if (dobj->co_flags & RTC_OBJ_ALLENTS) 15227c478bd9Sstevel@tonic-gate return (0); 15237c478bd9Sstevel@tonic-gate } else { 15247c478bd9Sstevel@tonic-gate if ((fobj->co_flags & (RTC_OBJ_NOEXIST | 15257c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 15267c478bd9Sstevel@tonic-gate return (0); 15277c478bd9Sstevel@tonic-gate 15287c478bd9Sstevel@tonic-gate if ((fobj->co_flags & RTC_OBJ_ALTER) && 15297c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && 15307c478bd9Sstevel@tonic-gate (lml == &lml_main)) { 15317c478bd9Sstevel@tonic-gate int ret; 15327c478bd9Sstevel@tonic-gate 15337c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 15347c478bd9Sstevel@tonic-gate /* 15357c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. 15367c478bd9Sstevel@tonic-gate * If this fails, and the alternative is 15377c478bd9Sstevel@tonic-gate * flagged as optional, fall through to 15387c478bd9Sstevel@tonic-gate * open the original path. 15397c478bd9Sstevel@tonic-gate */ 15407c478bd9Sstevel@tonic-gate ret = _find_file(lml, oname, alt, clmp, 15417c478bd9Sstevel@tonic-gate flags, fdesc, rej, dir, 1); 15427c478bd9Sstevel@tonic-gate if (ret || ((fobj->co_flags & 15437c478bd9Sstevel@tonic-gate RTC_OBJ_OPTINAL) == 0)) 15447c478bd9Sstevel@tonic-gate return (ret); 15457c478bd9Sstevel@tonic-gate 15467c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 15477c478bd9Sstevel@tonic-gate } 15487c478bd9Sstevel@tonic-gate } 15497c478bd9Sstevel@tonic-gate } 15507c478bd9Sstevel@tonic-gate } 15517c478bd9Sstevel@tonic-gate 15527c478bd9Sstevel@tonic-gate /* 15537c478bd9Sstevel@tonic-gate * Protect ourselves from building an invalid pathname. 15547c478bd9Sstevel@tonic-gate */ 15557c478bd9Sstevel@tonic-gate if ((olen + dir->p_len + 1) >= PATH_MAX) { 15565aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), nname, 15577c478bd9Sstevel@tonic-gate strerror(ENAMETOOLONG)); 15587c478bd9Sstevel@tonic-gate return (0); 15597c478bd9Sstevel@tonic-gate } 15607c478bd9Sstevel@tonic-gate if ((nname = (LM_GET_SO(clmp)(dir->p_name, nname))) == 0) 15617c478bd9Sstevel@tonic-gate return (0); 15627c478bd9Sstevel@tonic-gate 15637c478bd9Sstevel@tonic-gate return (_find_file(lml, oname, nname, clmp, flags, fdesc, rej, dir, 0)); 15647c478bd9Sstevel@tonic-gate } 15657c478bd9Sstevel@tonic-gate 15667c478bd9Sstevel@tonic-gate /* 15677c478bd9Sstevel@tonic-gate * A unique file has been opened. Create a link-map to represent it, and 15687c478bd9Sstevel@tonic-gate * process the various names by which it can be referenced. 15697c478bd9Sstevel@tonic-gate */ 15707c478bd9Sstevel@tonic-gate static Rt_map * 1571390b98b5Srie load_file(Lm_list *lml, Aliste lmco, Fdesc *fdesc) 15727c478bd9Sstevel@tonic-gate { 15737c478bd9Sstevel@tonic-gate const char *oname = fdesc->fd_oname; 15747c478bd9Sstevel@tonic-gate const char *nname = fdesc->fd_nname; 15757c478bd9Sstevel@tonic-gate Rt_map *nlmp; 15767c478bd9Sstevel@tonic-gate 15777c478bd9Sstevel@tonic-gate /* 15787c478bd9Sstevel@tonic-gate * Typically we call fct_map_so() with the full pathname of the opened 15797c478bd9Sstevel@tonic-gate * file (nname) and the name that started the search (oname), thus for 15807c478bd9Sstevel@tonic-gate * a typical dependency on libc this would be /usr/lib/libc.so.1 and 15817c478bd9Sstevel@tonic-gate * libc.so.1 (DT_NEEDED). The original name is maintained on an ALIAS 15827c478bd9Sstevel@tonic-gate * list for comparison when bringing in new dependencies. If the user 15837c478bd9Sstevel@tonic-gate * specified name as a full path (from a dlopen() for example) then 15847c478bd9Sstevel@tonic-gate * there's no need to create an ALIAS. 15857c478bd9Sstevel@tonic-gate */ 15867c478bd9Sstevel@tonic-gate if (strcmp(oname, nname) == 0) 15877c478bd9Sstevel@tonic-gate oname = 0; 15887c478bd9Sstevel@tonic-gate 15897c478bd9Sstevel@tonic-gate /* 15907c478bd9Sstevel@tonic-gate * A new file has been opened, now map it into the process. Close the 15917c478bd9Sstevel@tonic-gate * original file so as not to accumulate file descriptors. 15927c478bd9Sstevel@tonic-gate */ 15937c478bd9Sstevel@tonic-gate nlmp = ((fdesc->fd_ftp)->fct_map_so)(lml, lmco, nname, oname, 15947c478bd9Sstevel@tonic-gate fdesc->fd_fd); 15957c478bd9Sstevel@tonic-gate (void) close(fdesc->fd_fd); 15967c478bd9Sstevel@tonic-gate fdesc->fd_fd = 0; 15977c478bd9Sstevel@tonic-gate 15987c478bd9Sstevel@tonic-gate if (nlmp == 0) 15997c478bd9Sstevel@tonic-gate return (0); 16007c478bd9Sstevel@tonic-gate 16017c478bd9Sstevel@tonic-gate /* 16027c478bd9Sstevel@tonic-gate * Save the dev/inode information for later comparisons. 16037c478bd9Sstevel@tonic-gate */ 16047c478bd9Sstevel@tonic-gate STDEV(nlmp) = fdesc->fd_dev; 16057c478bd9Sstevel@tonic-gate STINO(nlmp) = fdesc->fd_ino; 16067c478bd9Sstevel@tonic-gate 16077c478bd9Sstevel@tonic-gate /* 16087c478bd9Sstevel@tonic-gate * Insert the names of this link-map into the FullpathNode AVL tree. 16097c478bd9Sstevel@tonic-gate * Save both the NAME() and PATHNAME() is they differ. 16107c478bd9Sstevel@tonic-gate * 16117c478bd9Sstevel@tonic-gate * If this is an OBJECT file, don't insert it yet as this is only a 16127c478bd9Sstevel@tonic-gate * temporary link-map. During elf_obj_fini() the final link-map is 16137c478bd9Sstevel@tonic-gate * created, and its names will be inserted in the FullpathNode AVL 16147c478bd9Sstevel@tonic-gate * tree at that time. 16157c478bd9Sstevel@tonic-gate */ 16167c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_OBJECT) == 0) { 16177c478bd9Sstevel@tonic-gate /* 16187c478bd9Sstevel@tonic-gate * Update the objects full path information if necessary. 161911a2bb38Srie * Note, with pathname expansion in effect, the fd_pname will 162011a2bb38Srie * be used as PATHNAME(). This allocated string will be freed 162111a2bb38Srie * should this object be deleted. However, without pathname 162211a2bb38Srie * expansion, the fd_name should be freed now, as it is no 162311a2bb38Srie * longer referenced. 16247c478bd9Sstevel@tonic-gate */ 162511a2bb38Srie if (FLAGS1(nlmp) & FL1_RT_RELATIVE) 16267c478bd9Sstevel@tonic-gate (void) fullpath(nlmp, fdesc->fd_pname); 162711a2bb38Srie else if (fdesc->fd_pname != fdesc->fd_nname) 162811a2bb38Srie free((void *)fdesc->fd_pname); 16297c478bd9Sstevel@tonic-gate fdesc->fd_pname = 0; 16307c478bd9Sstevel@tonic-gate 16317c478bd9Sstevel@tonic-gate if ((NAME(nlmp)[0] == '/') && (fpavl_insert(lml, nlmp, 16327c478bd9Sstevel@tonic-gate NAME(nlmp), fdesc->fd_avlwhere) == 0)) { 16337c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 16347c478bd9Sstevel@tonic-gate return (0); 16357c478bd9Sstevel@tonic-gate } 16367c478bd9Sstevel@tonic-gate if (((NAME(nlmp)[0] != '/') || 16377c478bd9Sstevel@tonic-gate (NAME(nlmp) != PATHNAME(nlmp))) && 16387c478bd9Sstevel@tonic-gate (fpavl_insert(lml, nlmp, PATHNAME(nlmp), 0) == 0)) { 16397c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 16407c478bd9Sstevel@tonic-gate return (0); 16417c478bd9Sstevel@tonic-gate } 16427c478bd9Sstevel@tonic-gate } 16437c478bd9Sstevel@tonic-gate 16447c478bd9Sstevel@tonic-gate /* 16457c478bd9Sstevel@tonic-gate * If we're processing an alternative object reset the original name 16467c478bd9Sstevel@tonic-gate * for possible $ORIGIN processing. 16477c478bd9Sstevel@tonic-gate */ 16487c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_ALTER) { 16497c478bd9Sstevel@tonic-gate const char *odir; 16507c478bd9Sstevel@tonic-gate char *ndir; 16517c478bd9Sstevel@tonic-gate size_t olen; 16527c478bd9Sstevel@tonic-gate 16537c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= FLG_RT_ALTER; 16547c478bd9Sstevel@tonic-gate 16557c478bd9Sstevel@tonic-gate /* 16567c478bd9Sstevel@tonic-gate * If we were given a pathname containing a slash then the 16577c478bd9Sstevel@tonic-gate * original name is still in oname. Otherwise the original 16587c478bd9Sstevel@tonic-gate * directory is in dir->p_name (which is all we need for 16597c478bd9Sstevel@tonic-gate * $ORIGIN). 16607c478bd9Sstevel@tonic-gate */ 16617c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_SLASH) { 16627c478bd9Sstevel@tonic-gate char *ofil; 16637c478bd9Sstevel@tonic-gate 16647c478bd9Sstevel@tonic-gate odir = oname; 16657c478bd9Sstevel@tonic-gate ofil = strrchr(oname, '/'); 16667c478bd9Sstevel@tonic-gate olen = ofil - odir + 1; 16677c478bd9Sstevel@tonic-gate } else { 16687c478bd9Sstevel@tonic-gate odir = fdesc->fd_odir; 16697c478bd9Sstevel@tonic-gate olen = strlen(odir) + 1; 16707c478bd9Sstevel@tonic-gate } 16717c478bd9Sstevel@tonic-gate 16727c478bd9Sstevel@tonic-gate if ((ndir = (char *)malloc(olen)) == 0) { 16737c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 16747c478bd9Sstevel@tonic-gate return (0); 16757c478bd9Sstevel@tonic-gate } 16767c478bd9Sstevel@tonic-gate (void) strncpy(ndir, odir, olen); 16777c478bd9Sstevel@tonic-gate ndir[--olen] = '\0'; 16787c478bd9Sstevel@tonic-gate 16797c478bd9Sstevel@tonic-gate ORIGNAME(nlmp) = ndir; 16807c478bd9Sstevel@tonic-gate DIRSZ(nlmp) = olen; 16817c478bd9Sstevel@tonic-gate } 16827c478bd9Sstevel@tonic-gate 16837c478bd9Sstevel@tonic-gate /* 1684390b98b5Srie * Identify this as a new object. 16857c478bd9Sstevel@tonic-gate */ 1686390b98b5Srie FLAGS(nlmp) |= FLG_RT_NEWLOAD; 16877c478bd9Sstevel@tonic-gate 16887c478bd9Sstevel@tonic-gate return (nlmp); 16897c478bd9Sstevel@tonic-gate } 16907c478bd9Sstevel@tonic-gate 16917c478bd9Sstevel@tonic-gate /* 16927c478bd9Sstevel@tonic-gate * This function loads the named file and returns a pointer to its link map. 16937c478bd9Sstevel@tonic-gate * It is assumed that the caller has already checked that the file is not 16947c478bd9Sstevel@tonic-gate * already loaded before calling this function (refer is_so_loaded()). 16957c478bd9Sstevel@tonic-gate * Find and open the file, map it into memory, add it to the end of the list 16967c478bd9Sstevel@tonic-gate * of link maps and return a pointer to the new link map. Return 0 on error. 16977c478bd9Sstevel@tonic-gate */ 16987c478bd9Sstevel@tonic-gate static Rt_map * 16997c478bd9Sstevel@tonic-gate load_so(Lm_list *lml, Aliste lmco, const char *oname, Rt_map *clmp, 1700fb1354edSrie uint_t flags, Fdesc *nfdp, Rej_desc *rej) 17017c478bd9Sstevel@tonic-gate { 17027c478bd9Sstevel@tonic-gate char *name; 17037c478bd9Sstevel@tonic-gate uint_t slash = 0; 17047c478bd9Sstevel@tonic-gate size_t olen; 1705fb1354edSrie Fdesc fdesc = { 0 }; 17067c478bd9Sstevel@tonic-gate Pnode *dir; 17077c478bd9Sstevel@tonic-gate 17087c478bd9Sstevel@tonic-gate /* 17097c478bd9Sstevel@tonic-gate * If the file is the run time linker then it's already loaded. 17107c478bd9Sstevel@tonic-gate */ 17117c478bd9Sstevel@tonic-gate if (interp && (strcmp(oname, NAME(lml_rtld.lm_head)) == 0)) 17127c478bd9Sstevel@tonic-gate return (lml_rtld.lm_head); 17137c478bd9Sstevel@tonic-gate 17147c478bd9Sstevel@tonic-gate /* 17157c478bd9Sstevel@tonic-gate * If this isn't a hardware capabilites pathname, which is already a 17167c478bd9Sstevel@tonic-gate * full, duplicated pathname, determine whether the pathname contains 17177c478bd9Sstevel@tonic-gate * a slash, and if not determine the input filename (for max path 17187c478bd9Sstevel@tonic-gate * length verification). 17197c478bd9Sstevel@tonic-gate */ 17207c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) == 0) { 17217c478bd9Sstevel@tonic-gate const char *str; 17227c478bd9Sstevel@tonic-gate 17237c478bd9Sstevel@tonic-gate for (str = oname; *str; str++) { 17247c478bd9Sstevel@tonic-gate if (*str == '/') { 17257c478bd9Sstevel@tonic-gate slash++; 17267c478bd9Sstevel@tonic-gate break; 17277c478bd9Sstevel@tonic-gate } 17287c478bd9Sstevel@tonic-gate } 17297c478bd9Sstevel@tonic-gate if (slash == 0) 17307c478bd9Sstevel@tonic-gate olen = (str - oname) + 1; 17317c478bd9Sstevel@tonic-gate } 17327c478bd9Sstevel@tonic-gate 17337c478bd9Sstevel@tonic-gate /* 17347c478bd9Sstevel@tonic-gate * If we are passed a 'null' link-map this means that this is the first 17357c478bd9Sstevel@tonic-gate * object to be loaded on this link-map list. In that case we set the 17367c478bd9Sstevel@tonic-gate * link-map to ld.so.1's link-map. 17377c478bd9Sstevel@tonic-gate * 17387c478bd9Sstevel@tonic-gate * This link-map is referenced to determine what lookup rules to use 17397c478bd9Sstevel@tonic-gate * when searching for files. By using ld.so.1's we are defaulting to 17407c478bd9Sstevel@tonic-gate * ELF look-up rules. 17417c478bd9Sstevel@tonic-gate * 17427c478bd9Sstevel@tonic-gate * Note: This case happens when loading the first object onto 17437c478bd9Sstevel@tonic-gate * the plt_tracing link-map. 17447c478bd9Sstevel@tonic-gate */ 17457c478bd9Sstevel@tonic-gate if (clmp == 0) 17467c478bd9Sstevel@tonic-gate clmp = lml_rtld.lm_head; 17477c478bd9Sstevel@tonic-gate 17487c478bd9Sstevel@tonic-gate /* 17497c478bd9Sstevel@tonic-gate * If this path resulted from a $HWCAP specification, then the best 17507c478bd9Sstevel@tonic-gate * hardware capability object has already been establish, and is 17517c478bd9Sstevel@tonic-gate * available in the calling file descriptor. Perform some minor book- 17527c478bd9Sstevel@tonic-gate * keeping so that we can fall through into common code. 17537c478bd9Sstevel@tonic-gate */ 17547c478bd9Sstevel@tonic-gate if (flags & FLG_RT_HWCAP) { 17557c478bd9Sstevel@tonic-gate /* 1756fb1354edSrie * If this object is already loaded, we're done. 17577c478bd9Sstevel@tonic-gate */ 1758fb1354edSrie if (nfdp->fd_lmp) 1759fb1354edSrie return (nfdp->fd_lmp); 17607c478bd9Sstevel@tonic-gate 17617c478bd9Sstevel@tonic-gate /* 17627c478bd9Sstevel@tonic-gate * Obtain the avl index for this object. 17637c478bd9Sstevel@tonic-gate */ 1764fb1354edSrie (void) fpavl_loaded(lml, nfdp->fd_nname, &(nfdp->fd_avlwhere)); 1765bbf522bdSrie 1766bbf522bdSrie /* 1767fb1354edSrie * If the name and resolved pathname differ, duplicate the path 1768fb1354edSrie * name once more to provide for genric cleanup by the caller. 1769bbf522bdSrie */ 1770fb1354edSrie if (nfdp->fd_pname && (nfdp->fd_nname != nfdp->fd_pname)) { 1771bbf522bdSrie char *pname; 1772bbf522bdSrie 17738521e5e6Srie if ((pname = strdup(nfdp->fd_pname)) == NULL) 1774bbf522bdSrie return (0); 1775fb1354edSrie nfdp->fd_pname = pname; 1776bbf522bdSrie } 17777c478bd9Sstevel@tonic-gate } else if (slash) { 17787c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 17797c478bd9Sstevel@tonic-gate 1780fb1354edSrie *nfdp = fdesc; 1781fb1354edSrie nfdp->fd_flags = FLG_FD_SLASH; 17827c478bd9Sstevel@tonic-gate 1783fb1354edSrie if (find_path(lml, oname, clmp, flags, nfdp, &_rej) == 0) { 178431fdd7caSab196087 rejection_inherit(rej, &_rej); 17857c478bd9Sstevel@tonic-gate return (0); 17867c478bd9Sstevel@tonic-gate } 17877c478bd9Sstevel@tonic-gate 17887c478bd9Sstevel@tonic-gate /* 17897c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 17907c478bd9Sstevel@tonic-gate */ 1791fb1354edSrie if (nfdp->fd_lmp) 1792fb1354edSrie return (nfdp->fd_lmp); 17937c478bd9Sstevel@tonic-gate 17947c478bd9Sstevel@tonic-gate } else { 17957c478bd9Sstevel@tonic-gate /* 17967c478bd9Sstevel@tonic-gate * No '/' - for each directory on list, make a pathname using 17977c478bd9Sstevel@tonic-gate * that directory and filename and try to open that file. 17987c478bd9Sstevel@tonic-gate */ 17997c478bd9Sstevel@tonic-gate Pnode *dirlist = (Pnode *)0; 18007c478bd9Sstevel@tonic-gate Word strhash = 0; 1801fb1354edSrie #if !defined(ISSOLOAD_BASENAME_DISABLED) 1802fb1354edSrie Rt_map *nlmp; 1803fb1354edSrie #endif 18045aefb655Srie DBG_CALL(Dbg_libs_find(lml, oname)); 18057c478bd9Sstevel@tonic-gate 18067c478bd9Sstevel@tonic-gate #if !defined(ISSOLOAD_BASENAME_DISABLED) 18070aa3cd4dSrie if ((nlmp = is_so_loaded(lml, oname))) 18087c478bd9Sstevel@tonic-gate return (nlmp); 18097c478bd9Sstevel@tonic-gate #endif 18107c478bd9Sstevel@tonic-gate /* 18117c478bd9Sstevel@tonic-gate * Make sure we clear the file descriptor new name in case the 18127c478bd9Sstevel@tonic-gate * following directory search doesn't provide any directories 18137c478bd9Sstevel@tonic-gate * (odd, but this can be forced with a -znodefaultlib test). 18147c478bd9Sstevel@tonic-gate */ 1815fb1354edSrie *nfdp = fdesc; 18167c478bd9Sstevel@tonic-gate for (dir = get_next_dir(&dirlist, clmp, flags); dir; 18177c478bd9Sstevel@tonic-gate dir = get_next_dir(&dirlist, clmp, flags)) { 18187c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 18197c478bd9Sstevel@tonic-gate 1820fb1354edSrie *nfdp = fdesc; 18217c478bd9Sstevel@tonic-gate 18227c478bd9Sstevel@tonic-gate /* 18237c478bd9Sstevel@tonic-gate * Try and locate this file. Make sure to clean up 18247c478bd9Sstevel@tonic-gate * any rejection information should the file have 18257c478bd9Sstevel@tonic-gate * been found, but not appropriate. 18267c478bd9Sstevel@tonic-gate */ 1827fb1354edSrie if (find_file(lml, oname, clmp, flags, nfdp, &_rej, 18287c478bd9Sstevel@tonic-gate dir, &strhash, olen) == 0) { 182931fdd7caSab196087 rejection_inherit(rej, &_rej); 18307c478bd9Sstevel@tonic-gate continue; 18317c478bd9Sstevel@tonic-gate } 18327c478bd9Sstevel@tonic-gate 18337c478bd9Sstevel@tonic-gate /* 18347c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 18357c478bd9Sstevel@tonic-gate */ 1836fb1354edSrie if (nfdp->fd_lmp) 1837fb1354edSrie return (nfdp->fd_lmp); 18387c478bd9Sstevel@tonic-gate 1839fb1354edSrie nfdp->fd_odir = dir->p_name; 18407c478bd9Sstevel@tonic-gate break; 18417c478bd9Sstevel@tonic-gate } 18427c478bd9Sstevel@tonic-gate 18437c478bd9Sstevel@tonic-gate /* 18447c478bd9Sstevel@tonic-gate * If the file couldn't be loaded, do another comparison of 18457c478bd9Sstevel@tonic-gate * loaded files using just the basename. This catches folks 18467c478bd9Sstevel@tonic-gate * who may have loaded multiple full pathname files (possibly 18477c478bd9Sstevel@tonic-gate * from setxid applications) to satisfy dependency relationships 18487c478bd9Sstevel@tonic-gate * (i.e., a file might have a dependency on foo.so.1 which has 18497c478bd9Sstevel@tonic-gate * already been opened using its full pathname). 18507c478bd9Sstevel@tonic-gate */ 18518521e5e6Srie if (nfdp->fd_nname == NULL) 18520aa3cd4dSrie return (is_so_loaded(lml, oname)); 18537c478bd9Sstevel@tonic-gate } 18547c478bd9Sstevel@tonic-gate 18557c478bd9Sstevel@tonic-gate /* 18567c478bd9Sstevel@tonic-gate * Duplicate the file name so that NAME() is available in core files. 18577c478bd9Sstevel@tonic-gate * Note, that hardware capability names are already duplicated, but 18587c478bd9Sstevel@tonic-gate * they get duplicated once more to insure consistent cleanup in the 18597c478bd9Sstevel@tonic-gate * event of an error condition. 18607c478bd9Sstevel@tonic-gate */ 18618521e5e6Srie if ((name = strdup(nfdp->fd_nname)) == NULL) 18627c478bd9Sstevel@tonic-gate return (0); 1863fb1354edSrie 1864fb1354edSrie if (nfdp->fd_nname == nfdp->fd_pname) 1865fb1354edSrie nfdp->fd_nname = nfdp->fd_pname = name; 18667c478bd9Sstevel@tonic-gate else 1867fb1354edSrie nfdp->fd_nname = name; 18687c478bd9Sstevel@tonic-gate 18697c478bd9Sstevel@tonic-gate /* 18707c478bd9Sstevel@tonic-gate * Finish mapping the file and return the link-map descriptor. Note, 18717c478bd9Sstevel@tonic-gate * if this request originated from a HWCAP request, re-establish the 18727c478bd9Sstevel@tonic-gate * fdesc information. For single paged objects, such as filters, the 18737c478bd9Sstevel@tonic-gate * original mapping may have been sufficient to capture the file, thus 18747c478bd9Sstevel@tonic-gate * this mapping needs to be reset to insure it doesn't mistakenly get 18757c478bd9Sstevel@tonic-gate * unmapped as part of HWCAP cleanup. 18767c478bd9Sstevel@tonic-gate */ 1877fb1354edSrie return (load_file(lml, lmco, nfdp)); 18787c478bd9Sstevel@tonic-gate } 18797c478bd9Sstevel@tonic-gate 18807c478bd9Sstevel@tonic-gate /* 18817c478bd9Sstevel@tonic-gate * Trace an attempt to load an object. 18827c478bd9Sstevel@tonic-gate */ 1883*7247f888Srie int 1884*7247f888Srie load_trace(Lm_list *lml, const char **oname, Rt_map *clmp) 18857c478bd9Sstevel@tonic-gate { 1886*7247f888Srie const char *name = *oname; 1887*7247f888Srie 18887c478bd9Sstevel@tonic-gate /* 18897c478bd9Sstevel@tonic-gate * First generate any ldd(1) diagnostics. 18907c478bd9Sstevel@tonic-gate */ 18917c478bd9Sstevel@tonic-gate if ((lml->lm_flags & (LML_FLG_TRC_VERBOSE | LML_FLG_TRC_SEARCH)) && 18927c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) 18937c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, NAME(clmp)); 18947c478bd9Sstevel@tonic-gate 18957c478bd9Sstevel@tonic-gate /* 18967c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're 18977c478bd9Sstevel@tonic-gate * about to go search for. 18987c478bd9Sstevel@tonic-gate */ 18997c478bd9Sstevel@tonic-gate if (((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_ACTIVITY) && 19007c478bd9Sstevel@tonic-gate (lml == LIST(clmp))) 19017c478bd9Sstevel@tonic-gate audit_activity(clmp, LA_ACT_ADD); 19027c478bd9Sstevel@tonic-gate 19037c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 1904*7247f888Srie char *aname = audit_objsearch(clmp, name, LA_SER_ORIG); 19057c478bd9Sstevel@tonic-gate 19067c478bd9Sstevel@tonic-gate /* 19077c478bd9Sstevel@tonic-gate * The auditor can indicate that this object should be ignored. 19087c478bd9Sstevel@tonic-gate */ 1909*7247f888Srie if (aname == NULL) { 1910*7247f888Srie DBG_CALL(Dbg_audit_terminate(lml, name)); 19117c478bd9Sstevel@tonic-gate return (0); 19127c478bd9Sstevel@tonic-gate } 19137c478bd9Sstevel@tonic-gate 19147c478bd9Sstevel@tonic-gate /* 1915*7247f888Srie * Protect ourselves from auditor mischief, by duplicating any 1916*7247f888Srie * alternative name. The original name has been allocated from 1917*7247f888Srie * expand(), so free this allocation before using the audit 1918*7247f888Srie * alternative. 19197c478bd9Sstevel@tonic-gate */ 1920*7247f888Srie if (name != aname) { 1921*7247f888Srie if ((aname = strdup(aname)) == NULL) { 1922*7247f888Srie eprintf(lml, ERR_FATAL, 1923*7247f888Srie MSG_INTL(MSG_GEN_AUDITERM), name); 1924*7247f888Srie return (0); 1925*7247f888Srie } 1926*7247f888Srie free((void *)*oname); 1927*7247f888Srie *oname = aname; 19287c478bd9Sstevel@tonic-gate } 19297c478bd9Sstevel@tonic-gate } 1930*7247f888Srie return (1); 19317c478bd9Sstevel@tonic-gate } 19327c478bd9Sstevel@tonic-gate 19337c478bd9Sstevel@tonic-gate /* 19347c478bd9Sstevel@tonic-gate * Having loaded an object and created a link-map to describe it, finish 19357c478bd9Sstevel@tonic-gate * processing this stage, including verifying any versioning requirements, 19367c478bd9Sstevel@tonic-gate * updating the objects mode, creating a handle if necessary, and adding this 19377c478bd9Sstevel@tonic-gate * object to existing handles if required. 19387c478bd9Sstevel@tonic-gate */ 1939390b98b5Srie static int 19407c478bd9Sstevel@tonic-gate load_finish(Lm_list *lml, const char *name, Rt_map *clmp, int nmode, 19417c478bd9Sstevel@tonic-gate uint_t flags, Grp_hdl **hdl, Rt_map *nlmp) 19427c478bd9Sstevel@tonic-gate { 19437c478bd9Sstevel@tonic-gate Aliste off; 19447c478bd9Sstevel@tonic-gate Grp_hdl *ghp, **ghpp; 19457c478bd9Sstevel@tonic-gate int promote; 19467c478bd9Sstevel@tonic-gate 19477c478bd9Sstevel@tonic-gate /* 19487c478bd9Sstevel@tonic-gate * If this dependency is associated with a required version insure that 19497c478bd9Sstevel@tonic-gate * the version is present in the loaded file. 19507c478bd9Sstevel@tonic-gate */ 19517c478bd9Sstevel@tonic-gate if (((rtld_flags & RT_FL_NOVERSION) == 0) && 19527c478bd9Sstevel@tonic-gate (FCT(clmp) == &elf_fct) && VERNEED(clmp) && 19537c478bd9Sstevel@tonic-gate (LM_VERIFY_VERS(clmp)(name, clmp, nlmp) == 0)) 19547c478bd9Sstevel@tonic-gate return (0); 19557c478bd9Sstevel@tonic-gate 19567c478bd9Sstevel@tonic-gate /* 19577c478bd9Sstevel@tonic-gate * If this object has indicated that it should be isolated as a group 19587c478bd9Sstevel@tonic-gate * (DT_FLAGS_1 contains DF_1_GROUP - object was built with -B group), 19597c478bd9Sstevel@tonic-gate * or if the callers direct bindings indicate it should be isolated as 19607c478bd9Sstevel@tonic-gate * a group (DYNINFO flags contains FLG_DI_GROUP - dependency followed 19617c478bd9Sstevel@tonic-gate * -zgroupperm), establish the appropriate mode. 19627c478bd9Sstevel@tonic-gate * 19637c478bd9Sstevel@tonic-gate * The intent of an object defining itself as a group is to isolate the 19647c478bd9Sstevel@tonic-gate * relocation of the group within its own members, however, unless 19657c478bd9Sstevel@tonic-gate * opened through dlopen(), in which case we assume dlsym() will be used 19667c478bd9Sstevel@tonic-gate * to located symbols in the new object, we still need to associate it 19677c478bd9Sstevel@tonic-gate * with the caller for it to be bound with. This is equivalent to a 19687c478bd9Sstevel@tonic-gate * dlopen(RTLD_GROUP) and dlsym() using the returned handle. 19697c478bd9Sstevel@tonic-gate */ 19707c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) | flags) & FLG_RT_SETGROUP) { 19717c478bd9Sstevel@tonic-gate nmode &= ~RTLD_WORLD; 19727c478bd9Sstevel@tonic-gate nmode |= RTLD_GROUP; 19737c478bd9Sstevel@tonic-gate 19747c478bd9Sstevel@tonic-gate /* 19757c478bd9Sstevel@tonic-gate * If the object wasn't explicitly dlopen()'ed associate it with 19767c478bd9Sstevel@tonic-gate * the parent. 19777c478bd9Sstevel@tonic-gate */ 19789a411307Srie if ((flags & FLG_RT_HANDLE) == 0) 19797c478bd9Sstevel@tonic-gate nmode |= RTLD_PARENT; 19807c478bd9Sstevel@tonic-gate } 19817c478bd9Sstevel@tonic-gate 19827c478bd9Sstevel@tonic-gate /* 19837c478bd9Sstevel@tonic-gate * Establish new mode and flags. 19847c478bd9Sstevel@tonic-gate * 19857c478bd9Sstevel@tonic-gate * For patch backward compatibility, the following use of update_mode() 19867c478bd9Sstevel@tonic-gate * is disabled. 19877c478bd9Sstevel@tonic-gate */ 19887c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 19897c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 19907c478bd9Sstevel@tonic-gate promote = MODE(nlmp) |= 19917c478bd9Sstevel@tonic-gate (nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST)); 19927c478bd9Sstevel@tonic-gate else 19937c478bd9Sstevel@tonic-gate #endif 19947c478bd9Sstevel@tonic-gate promote = update_mode(nlmp, MODE(nlmp), nmode); 19957c478bd9Sstevel@tonic-gate 19967c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= flags; 19977c478bd9Sstevel@tonic-gate 19987c478bd9Sstevel@tonic-gate /* 19992926dd2eSrie * If this is a global object, ensure the associated link-map list can 20002926dd2eSrie * be rescanned for global, lazy dependencies. 20012926dd2eSrie */ 20022926dd2eSrie if (MODE(nlmp) & RTLD_GLOBAL) 20032926dd2eSrie LIST(nlmp)->lm_flags &= ~LML_FLG_NOPENDGLBLAZY; 20042926dd2eSrie 20052926dd2eSrie /* 20067c478bd9Sstevel@tonic-gate * If we've been asked to establish a handle create one for this object. 20077c478bd9Sstevel@tonic-gate * Or, if this object has already been analyzed, but this reference 20087c478bd9Sstevel@tonic-gate * requires that the mode of the object be promoted, also create a 20097c478bd9Sstevel@tonic-gate * handle to propagate the new modes to all this objects dependencies. 20107c478bd9Sstevel@tonic-gate */ 20117c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) | flags) & FLG_RT_HANDLE) || (promote && 20127c478bd9Sstevel@tonic-gate (FLAGS(nlmp) & FLG_RT_ANALYZED))) { 20137c478bd9Sstevel@tonic-gate uint_t oflags, hflags = 0; 20147c478bd9Sstevel@tonic-gate 20157c478bd9Sstevel@tonic-gate if (nmode & RTLD_PARENT) 20167c478bd9Sstevel@tonic-gate hflags |= GPH_PARENT; 20177c478bd9Sstevel@tonic-gate if (nmode & RTLD_FIRST) 20187c478bd9Sstevel@tonic-gate hflags |= GPH_FIRST; 20197c478bd9Sstevel@tonic-gate 20207c478bd9Sstevel@tonic-gate /* 20217c478bd9Sstevel@tonic-gate * Now that a handle is being created, remove this state from 20227c478bd9Sstevel@tonic-gate * the object so that it doesn't mistakenly get inherited by 20237c478bd9Sstevel@tonic-gate * a dependency. 20247c478bd9Sstevel@tonic-gate */ 20257c478bd9Sstevel@tonic-gate oflags = FLAGS(nlmp); 20267c478bd9Sstevel@tonic-gate FLAGS(nlmp) &= ~FLG_RT_HANDLE; 20277c478bd9Sstevel@tonic-gate 20287c478bd9Sstevel@tonic-gate if ((ghp = hdl_create(lml, nlmp, clmp, hflags)) == 0) 20297c478bd9Sstevel@tonic-gate return (0); 20307c478bd9Sstevel@tonic-gate 20317c478bd9Sstevel@tonic-gate /* 20327c478bd9Sstevel@tonic-gate * Add any dependencies that are already loaded, to the handle. 20337c478bd9Sstevel@tonic-gate */ 203402ca3e02Srie if (hdl_initialize(ghp, nlmp, nmode, promote) == 0) 20357c478bd9Sstevel@tonic-gate return (0); 20367c478bd9Sstevel@tonic-gate 20377c478bd9Sstevel@tonic-gate if (hdl) 20387c478bd9Sstevel@tonic-gate *hdl = ghp; 20397c478bd9Sstevel@tonic-gate 20407c478bd9Sstevel@tonic-gate /* 20417c478bd9Sstevel@tonic-gate * If we were asked to create a handle, we're done. Otherwise, 20427c478bd9Sstevel@tonic-gate * remove the handle. The handle was only used to establish this 20437c478bd9Sstevel@tonic-gate * objects dependencies and promote any modes, so we don't want 20447c478bd9Sstevel@tonic-gate * this handle preventing the objects deletion. Fall through to 20457c478bd9Sstevel@tonic-gate * carry out any group processing. 20467c478bd9Sstevel@tonic-gate */ 20477c478bd9Sstevel@tonic-gate if ((oflags | flags) & FLG_RT_HANDLE) 20487c478bd9Sstevel@tonic-gate return (1); 20497c478bd9Sstevel@tonic-gate 20507c478bd9Sstevel@tonic-gate free_hdl(ghp); 20517c478bd9Sstevel@tonic-gate } 20527c478bd9Sstevel@tonic-gate 20537c478bd9Sstevel@tonic-gate /* 20547c478bd9Sstevel@tonic-gate * If the caller isn't part of a group we're done. 20557c478bd9Sstevel@tonic-gate */ 20567c478bd9Sstevel@tonic-gate if (GROUPS(clmp) == 0) 20577c478bd9Sstevel@tonic-gate return (1); 20587c478bd9Sstevel@tonic-gate 20597c478bd9Sstevel@tonic-gate /* 20607c478bd9Sstevel@tonic-gate * Determine if our caller is already associated with a handle, if so 20617c478bd9Sstevel@tonic-gate * we need to add this object to any handles that already exist. 20627c478bd9Sstevel@tonic-gate * Traverse the list of groups our caller is a member of and add this 20637c478bd9Sstevel@tonic-gate * new link-map to those groups. 20647c478bd9Sstevel@tonic-gate */ 20657c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_hdl_title(DBG_DEP_ADD)); 20667c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(GROUPS(clmp), off, ghpp)) { 20677c478bd9Sstevel@tonic-gate Aliste off1; 20687c478bd9Sstevel@tonic-gate Grp_desc *gdp; 20697c478bd9Sstevel@tonic-gate int exist; 20707c478bd9Sstevel@tonic-gate Rt_map **lmpp; 20717c478bd9Sstevel@tonic-gate Alist *lmalp = 0; 20727c478bd9Sstevel@tonic-gate 20737c478bd9Sstevel@tonic-gate ghp = *ghpp; 20747c478bd9Sstevel@tonic-gate 20757c478bd9Sstevel@tonic-gate /* 20767c478bd9Sstevel@tonic-gate * If the caller doesn't indicate that its dependencies should 20777c478bd9Sstevel@tonic-gate * be added to a handle, ignore it. This case identifies a 20787c478bd9Sstevel@tonic-gate * parent of a dlopen(RTLD_PARENT) request. 20797c478bd9Sstevel@tonic-gate */ 20807c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(ghp->gh_depends, off1, gdp)) { 20817c478bd9Sstevel@tonic-gate if (gdp->gd_depend == clmp) 20827c478bd9Sstevel@tonic-gate break; 20837c478bd9Sstevel@tonic-gate } 20847c478bd9Sstevel@tonic-gate if ((gdp->gd_flags & GPD_ADDEPS) == 0) 20857c478bd9Sstevel@tonic-gate continue; 20867c478bd9Sstevel@tonic-gate 20877c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, nlmp, 20887c478bd9Sstevel@tonic-gate (GPD_AVAIL | GPD_ADDEPS))) == 0) 20897c478bd9Sstevel@tonic-gate return (0); 20907c478bd9Sstevel@tonic-gate 20917c478bd9Sstevel@tonic-gate /* 20927c478bd9Sstevel@tonic-gate * If this member already exists then its dependencies will 20937c478bd9Sstevel@tonic-gate * have already been processed. 20947c478bd9Sstevel@tonic-gate */ 20957c478bd9Sstevel@tonic-gate if (exist == ALE_EXISTS) 20967c478bd9Sstevel@tonic-gate continue; 20977c478bd9Sstevel@tonic-gate 20987c478bd9Sstevel@tonic-gate /* 20997c478bd9Sstevel@tonic-gate * If the object we've added has just been opened, it will not 21007c478bd9Sstevel@tonic-gate * yet have been processed for its dependencies, these will be 21017c478bd9Sstevel@tonic-gate * added on later calls to load_one(). If it doesn't have any 21027c478bd9Sstevel@tonic-gate * dependencies we're also done. 21037c478bd9Sstevel@tonic-gate */ 21047c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) || 21057c478bd9Sstevel@tonic-gate (DEPENDS(nlmp) == 0)) 21067c478bd9Sstevel@tonic-gate continue; 21077c478bd9Sstevel@tonic-gate 21087c478bd9Sstevel@tonic-gate /* 21097c478bd9Sstevel@tonic-gate * Otherwise, this object exists and has dependencies, so add 21107c478bd9Sstevel@tonic-gate * all of its dependencies to the handle were operating on. 21117c478bd9Sstevel@tonic-gate */ 21127c478bd9Sstevel@tonic-gate if (alist_append(&lmalp, &nlmp, sizeof (Rt_map *), 21137c478bd9Sstevel@tonic-gate AL_CNT_DEPCLCT) == 0) 21147c478bd9Sstevel@tonic-gate return (0); 21157c478bd9Sstevel@tonic-gate 21167c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(lmalp, off1, lmpp)) { 21177c478bd9Sstevel@tonic-gate Rt_map * dlmp1 = *lmpp; 21187c478bd9Sstevel@tonic-gate Aliste off2; 21197c478bd9Sstevel@tonic-gate Bnd_desc ** bdpp; 21207c478bd9Sstevel@tonic-gate 21217c478bd9Sstevel@tonic-gate /* 21227c478bd9Sstevel@tonic-gate * Add any dependencies of this dependency to the 21237c478bd9Sstevel@tonic-gate * dynamic dependency list so they can be further 21247c478bd9Sstevel@tonic-gate * processed. 21257c478bd9Sstevel@tonic-gate */ 21267c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(DEPENDS(dlmp1), off2, bdpp)) { 21277c478bd9Sstevel@tonic-gate Bnd_desc * bdp = *bdpp; 21287c478bd9Sstevel@tonic-gate Rt_map * dlmp2 = bdp->b_depend; 21297c478bd9Sstevel@tonic-gate 21307c478bd9Sstevel@tonic-gate if ((bdp->b_flags & BND_NEEDED) == 0) 21317c478bd9Sstevel@tonic-gate continue; 21327c478bd9Sstevel@tonic-gate 21337c478bd9Sstevel@tonic-gate if (alist_test(&lmalp, dlmp2, sizeof (Rt_map *), 21347c478bd9Sstevel@tonic-gate AL_CNT_DEPCLCT) == 0) { 21357c478bd9Sstevel@tonic-gate free(lmalp); 21367c478bd9Sstevel@tonic-gate return (0); 21377c478bd9Sstevel@tonic-gate } 21387c478bd9Sstevel@tonic-gate } 21397c478bd9Sstevel@tonic-gate 21407c478bd9Sstevel@tonic-gate if (nlmp == dlmp1) 21417c478bd9Sstevel@tonic-gate continue; 21427c478bd9Sstevel@tonic-gate 21437c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, dlmp1, 21447c478bd9Sstevel@tonic-gate (GPD_AVAIL | GPD_ADDEPS))) != 0) { 2145*7247f888Srie if (exist == ALE_CREATE) { 21467c478bd9Sstevel@tonic-gate (void) update_mode(dlmp1, MODE(dlmp1), 21477c478bd9Sstevel@tonic-gate nmode); 2148*7247f888Srie } 21497c478bd9Sstevel@tonic-gate continue; 21507c478bd9Sstevel@tonic-gate } 21517c478bd9Sstevel@tonic-gate free(lmalp); 21527c478bd9Sstevel@tonic-gate return (0); 21537c478bd9Sstevel@tonic-gate } 21547c478bd9Sstevel@tonic-gate free(lmalp); 21557c478bd9Sstevel@tonic-gate } 21567c478bd9Sstevel@tonic-gate return (1); 21577c478bd9Sstevel@tonic-gate } 21587c478bd9Sstevel@tonic-gate 21597c478bd9Sstevel@tonic-gate /* 21607c478bd9Sstevel@tonic-gate * The central routine for loading shared objects. Insures ldd() diagnostics, 21617c478bd9Sstevel@tonic-gate * handles and any other related additions are all done in one place. 21627c478bd9Sstevel@tonic-gate */ 2163fb1354edSrie static Rt_map * 2164*7247f888Srie _load_path(Lm_list *lml, Aliste lmco, const char **oname, Rt_map *clmp, 2165fb1354edSrie int nmode, uint_t flags, Grp_hdl ** hdl, Fdesc *nfdp, Rej_desc *rej) 21667c478bd9Sstevel@tonic-gate { 21677c478bd9Sstevel@tonic-gate Rt_map *nlmp; 2168*7247f888Srie const char *name = *oname; 21697c478bd9Sstevel@tonic-gate 21707c478bd9Sstevel@tonic-gate if ((nmode & RTLD_NOLOAD) == 0) { 21717c478bd9Sstevel@tonic-gate /* 21727c478bd9Sstevel@tonic-gate * If this isn't a noload request attempt to load the file. 2173*7247f888Srie * Note, the name of the file may be changed by an auditor. 21747c478bd9Sstevel@tonic-gate */ 2175*7247f888Srie if ((load_trace(lml, oname, clmp)) == 0) 21767c478bd9Sstevel@tonic-gate return (0); 21777c478bd9Sstevel@tonic-gate 2178*7247f888Srie name = *oname; 2179*7247f888Srie 21807c478bd9Sstevel@tonic-gate if ((nlmp = load_so(lml, lmco, name, clmp, flags, 2181fb1354edSrie nfdp, rej)) == 0) 21827c478bd9Sstevel@tonic-gate return (0); 21837c478bd9Sstevel@tonic-gate 21847c478bd9Sstevel@tonic-gate /* 21857c478bd9Sstevel@tonic-gate * If we've loaded a library which identifies itself as not 21867c478bd9Sstevel@tonic-gate * being dlopen()'able catch it here. Let non-dlopen()'able 21877c478bd9Sstevel@tonic-gate * objects through under RTLD_CONFGEN as they're only being 21887c478bd9Sstevel@tonic-gate * mapped to be dldump()'ed. 21897c478bd9Sstevel@tonic-gate */ 21907c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_APPLIC) && ((FLAGS(nlmp) & 21917c478bd9Sstevel@tonic-gate (FLG_RT_NOOPEN | FLG_RT_RELOCED)) == FLG_RT_NOOPEN) && 21927c478bd9Sstevel@tonic-gate ((nmode & RTLD_CONFGEN) == 0)) { 21937c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 21947c478bd9Sstevel@tonic-gate 21957c478bd9Sstevel@tonic-gate _rej.rej_name = name; 21967c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 21977c478bd9Sstevel@tonic-gate _rej.rej_str = MSG_INTL(MSG_GEN_NOOPEN); 21985aefb655Srie DBG_CALL(Dbg_file_rejected(lml, &_rej)); 219931fdd7caSab196087 rejection_inherit(rej, &_rej); 22007c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 22017c478bd9Sstevel@tonic-gate return (0); 22027c478bd9Sstevel@tonic-gate } 22037c478bd9Sstevel@tonic-gate } else { 22047c478bd9Sstevel@tonic-gate /* 22057c478bd9Sstevel@tonic-gate * If it's a NOLOAD request - check to see if the object 22067c478bd9Sstevel@tonic-gate * has already been loaded. 22077c478bd9Sstevel@tonic-gate */ 22087c478bd9Sstevel@tonic-gate /* LINTED */ 22090aa3cd4dSrie if (nlmp = is_so_loaded(lml, name)) { 22107c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_VERBOSE) && 22117c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 22127c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, 22137c478bd9Sstevel@tonic-gate NAME(clmp)); 2214*7247f888Srie /* BEGIN CSTYLED */ 22157c478bd9Sstevel@tonic-gate if (*name == '/') 22167c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 22177c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 22187c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 22197c478bd9Sstevel@tonic-gate else 22207c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 22217c478bd9Sstevel@tonic-gate name, NAME(nlmp), 22227c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 22237c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 2224*7247f888Srie /* END CSTYLED */ 22257c478bd9Sstevel@tonic-gate } 22267c478bd9Sstevel@tonic-gate } else { 22277c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 22287c478bd9Sstevel@tonic-gate 22297c478bd9Sstevel@tonic-gate _rej.rej_name = name; 22307c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 22317c478bd9Sstevel@tonic-gate _rej.rej_str = strerror(ENOENT); 22325aefb655Srie DBG_CALL(Dbg_file_rejected(lml, &_rej)); 223331fdd7caSab196087 rejection_inherit(rej, &_rej); 22347c478bd9Sstevel@tonic-gate return (0); 22357c478bd9Sstevel@tonic-gate } 22367c478bd9Sstevel@tonic-gate } 22377c478bd9Sstevel@tonic-gate 22387c478bd9Sstevel@tonic-gate /* 22397c478bd9Sstevel@tonic-gate * Finish processing this loaded object. 22407c478bd9Sstevel@tonic-gate */ 2241390b98b5Srie if (load_finish(lml, name, clmp, nmode, flags, hdl, nlmp) == 0) { 2242390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 22437c478bd9Sstevel@tonic-gate 22447c478bd9Sstevel@tonic-gate /* 2245390b98b5Srie * If this object has already been analyzed, then it is in use, 2246390b98b5Srie * so even though this operation has failed, it should not be 2247390b98b5Srie * torn down. 22487c478bd9Sstevel@tonic-gate */ 22497c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) 22507c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 22517c478bd9Sstevel@tonic-gate return (0); 22527c478bd9Sstevel@tonic-gate } 22537c478bd9Sstevel@tonic-gate 22547c478bd9Sstevel@tonic-gate /* 2255390b98b5Srie * If this object is new, and we're being audited, tell the audit 2256390b98b5Srie * library of the file we've just opened. Note, if the new link-map 2257390b98b5Srie * requires local auditing of its dependencies we also register its 2258390b98b5Srie * opening. 2259390b98b5Srie */ 2260390b98b5Srie if (FLAGS(nlmp) & FLG_RT_NEWLOAD) { 2261390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 2262390b98b5Srie 2263390b98b5Srie if (((lml->lm_tflags | FLAGS1(clmp) | FLAGS1(nlmp)) & 2264390b98b5Srie LML_TFLG_AUD_MASK) && (((lml->lm_flags | 2265390b98b5Srie LIST(clmp)->lm_flags) & LML_FLG_NOAUDIT) == 0)) { 2266390b98b5Srie if (audit_objopen(clmp, nlmp) == 0) { 2267390b98b5Srie remove_so(lml, nlmp); 2268390b98b5Srie return (0); 2269390b98b5Srie } 2270390b98b5Srie } 2271390b98b5Srie } 2272390b98b5Srie return (nlmp); 2273390b98b5Srie } 2274390b98b5Srie 2275fb1354edSrie Rt_map * 2276*7247f888Srie load_path(Lm_list *lml, Aliste lmco, const char **name, Rt_map *clmp, 2277fb1354edSrie int nmode, uint_t flags, Grp_hdl **hdl, Fdesc *cfdp, Rej_desc *rej) 2278fb1354edSrie { 2279fb1354edSrie Rt_map *lmp; 2280fb1354edSrie Fdesc nfdp = { 0 }; 2281fb1354edSrie 2282fb1354edSrie /* 2283fb1354edSrie * If this path resulted from a $HWCAP specification, then the best 2284fb1354edSrie * hardware capability object has already been establish, and is 2285fb1354edSrie * available in the calling file descriptor. 2286fb1354edSrie */ 2287fb1354edSrie if (flags & FLG_RT_HWCAP) { 2288fb1354edSrie if (cfdp->fd_lmp == 0) { 2289fb1354edSrie /* 2290fb1354edSrie * If this object hasn't yet been mapped, re-establish 2291fb1354edSrie * the file descriptor structure to reflect this objects 2292fb1354edSrie * original initial page mapping. Make sure any present 2293fb1354edSrie * file descriptor mapping is removed before overwriting 2294fb1354edSrie * the structure. 2295fb1354edSrie */ 2296fb1354edSrie #if defined(MAP_ALIGN) 2297fb1354edSrie if (fmap->fm_maddr && 2298fb1354edSrie ((fmap->fm_mflags & MAP_ALIGN) == 0)) 2299fb1354edSrie #else 2300fb1354edSrie if (fmap->fm_maddr) 2301fb1354edSrie #endif 2302fb1354edSrie (void) munmap(fmap->fm_maddr, fmap->fm_msize); 2303fb1354edSrie } 2304fb1354edSrie nfdp = *cfdp; 2305fb1354edSrie *fmap = cfdp->fd_fmap; 2306fb1354edSrie } 2307fb1354edSrie 2308fb1354edSrie lmp = _load_path(lml, lmco, name, clmp, nmode, flags, hdl, &nfdp, rej); 2309fb1354edSrie 2310fb1354edSrie /* 2311fb1354edSrie * If this path originated from a $HWCAP specification, re-establish the 2312fb1354edSrie * fdesc information. For single paged objects, such as filters, the 2313fb1354edSrie * original mapping may have been sufficient to capture the file, thus 2314fb1354edSrie * this mapping needs to be reset to insure it doesn't mistakenly get 2315fb1354edSrie * unmapped as part of HWCAP cleanup. 2316fb1354edSrie */ 2317fb1354edSrie if (flags & FLG_RT_HWCAP) { 2318fb1354edSrie cfdp->fd_fmap.fm_maddr = fmap->fm_maddr; 2319fb1354edSrie cfdp->fd_fmap.fm_mflags = fmap->fm_mflags; 2320fb1354edSrie cfdp->fd_fd = nfdp.fd_fd; 2321fb1354edSrie } 2322fb1354edSrie 2323fb1354edSrie return (lmp); 2324fb1354edSrie } 2325fb1354edSrie 2326390b98b5Srie /* 23277c478bd9Sstevel@tonic-gate * Load one object from a possible list of objects. Typically, for requests 23287c478bd9Sstevel@tonic-gate * such as NEEDED's, only one object is specified. However, this object could 23297c478bd9Sstevel@tonic-gate * be specified using $ISALIST or $HWCAP, in which case only the first object 23307c478bd9Sstevel@tonic-gate * that can be loaded is used (ie. the best). 23317c478bd9Sstevel@tonic-gate */ 23327c478bd9Sstevel@tonic-gate Rt_map * 23337c478bd9Sstevel@tonic-gate load_one(Lm_list *lml, Aliste lmco, Pnode *pnp, Rt_map *clmp, int mode, 23347c478bd9Sstevel@tonic-gate uint_t flags, Grp_hdl ** hdl) 23357c478bd9Sstevel@tonic-gate { 23367c478bd9Sstevel@tonic-gate Rej_desc rej = { 0 }; 23377c478bd9Sstevel@tonic-gate Pnode *tpnp; 23387c478bd9Sstevel@tonic-gate const char *name; 23397c478bd9Sstevel@tonic-gate 23407c478bd9Sstevel@tonic-gate for (tpnp = pnp; tpnp && tpnp->p_name; tpnp = tpnp->p_next) { 2341*7247f888Srie Rt_map *tlmp; 2342*7247f888Srie 23437c478bd9Sstevel@tonic-gate /* 23447c478bd9Sstevel@tonic-gate * A Hardware capabilities requirement can itself expand into 23457c478bd9Sstevel@tonic-gate * a number of candidates. 23467c478bd9Sstevel@tonic-gate */ 23477c478bd9Sstevel@tonic-gate if (tpnp->p_orig & PN_TKN_HWCAP) { 23487c478bd9Sstevel@tonic-gate if ((tlmp = load_hwcap(lml, lmco, tpnp->p_name, clmp, 23497c478bd9Sstevel@tonic-gate mode, (flags | FLG_RT_HWCAP), hdl, &rej)) != 0) { 23507c478bd9Sstevel@tonic-gate remove_rej(&rej); 23517c478bd9Sstevel@tonic-gate return (tlmp); 23527c478bd9Sstevel@tonic-gate } 23537c478bd9Sstevel@tonic-gate } else { 2354*7247f888Srie if ((tlmp = load_path(lml, lmco, &tpnp->p_name, clmp, 23557c478bd9Sstevel@tonic-gate mode, flags, hdl, 0, &rej)) != 0) { 23567c478bd9Sstevel@tonic-gate remove_rej(&rej); 23577c478bd9Sstevel@tonic-gate return (tlmp); 23587c478bd9Sstevel@tonic-gate } 23597c478bd9Sstevel@tonic-gate } 23607c478bd9Sstevel@tonic-gate } 23617c478bd9Sstevel@tonic-gate 23627c478bd9Sstevel@tonic-gate /* 23637c478bd9Sstevel@tonic-gate * If this pathname originated from an expanded token, use the original 23647c478bd9Sstevel@tonic-gate * for any diagnostic output. 23657c478bd9Sstevel@tonic-gate */ 23667c478bd9Sstevel@tonic-gate if ((name = pnp->p_oname) == 0) 23677c478bd9Sstevel@tonic-gate name = pnp->p_name; 23687c478bd9Sstevel@tonic-gate 23697c478bd9Sstevel@tonic-gate file_notfound(lml, name, clmp, flags, &rej); 23707c478bd9Sstevel@tonic-gate remove_rej(&rej); 23717c478bd9Sstevel@tonic-gate return (0); 23727c478bd9Sstevel@tonic-gate } 23737c478bd9Sstevel@tonic-gate 23747c478bd9Sstevel@tonic-gate /* 23759a411307Srie * Determine whether a symbol is defined as an interposer. 23769a411307Srie */ 23779a411307Srie int 23789a411307Srie is_sym_interposer(Rt_map *lmp, Sym *sym) 23799a411307Srie { 23809a411307Srie Syminfo *sip = SYMINFO(lmp); 23819a411307Srie 23829a411307Srie if (sip) { 23839a411307Srie ulong_t ndx; 23849a411307Srie 23859a411307Srie ndx = (((ulong_t)sym - (ulong_t)SYMTAB(lmp)) / SYMENT(lmp)); 23869a411307Srie /* LINTED */ 23879a411307Srie sip = (Syminfo *)((char *)sip + (ndx * SYMINENT(lmp))); 23889a411307Srie if (sip->si_flags & SYMINFO_FLG_INTERPOSE) 23899a411307Srie return (1); 23909a411307Srie } 23919a411307Srie return (0); 23929a411307Srie } 23939a411307Srie 23949a411307Srie /* 23957c478bd9Sstevel@tonic-gate * While processing direct or group bindings, determine whether the object to 23967c478bd9Sstevel@tonic-gate * which we've bound can be interposed upon. In this context, copy relocations 23977c478bd9Sstevel@tonic-gate * are a form of interposition. 23987c478bd9Sstevel@tonic-gate */ 23997c478bd9Sstevel@tonic-gate static Sym * 24007c478bd9Sstevel@tonic-gate lookup_sym_interpose(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Lm_list *lml, 24017c478bd9Sstevel@tonic-gate Sym *sym) 24027c478bd9Sstevel@tonic-gate { 24037c478bd9Sstevel@tonic-gate Rt_map *lmp; 24047c478bd9Sstevel@tonic-gate Slookup sl; 24057c478bd9Sstevel@tonic-gate 24067c478bd9Sstevel@tonic-gate /* 24077c478bd9Sstevel@tonic-gate * If we've bound to a copy relocation definition then we need to assign 24087c478bd9Sstevel@tonic-gate * this binding to the original copy reference. Fabricate an inter- 24097c478bd9Sstevel@tonic-gate * position diagnostic, as this is a legitimate form of interposition. 24107c478bd9Sstevel@tonic-gate */ 24117c478bd9Sstevel@tonic-gate if (FLAGS1(*dlmp) & FL1_RT_COPYTOOK) { 24127c478bd9Sstevel@tonic-gate Rel_copy *rcp; 24137c478bd9Sstevel@tonic-gate Aliste off; 24147c478bd9Sstevel@tonic-gate 24157c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(COPY(*dlmp), off, rcp)) { 24167c478bd9Sstevel@tonic-gate if ((sym == rcp->r_dsym) || (sym->st_value && 24177c478bd9Sstevel@tonic-gate (sym->st_value == rcp->r_dsym->st_value))) { 24187c478bd9Sstevel@tonic-gate *dlmp = rcp->r_rlmp; 24197c478bd9Sstevel@tonic-gate *binfo |= 24207c478bd9Sstevel@tonic-gate (DBG_BINFO_INTERPOSE | DBG_BINFO_COPYREF); 24217c478bd9Sstevel@tonic-gate return (rcp->r_rsym); 24227c478bd9Sstevel@tonic-gate } 24237c478bd9Sstevel@tonic-gate } 24247c478bd9Sstevel@tonic-gate } 24257c478bd9Sstevel@tonic-gate 24267c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_INTRPOSE) == 0) 24277c478bd9Sstevel@tonic-gate return ((Sym *)0); 24287c478bd9Sstevel@tonic-gate 24297c478bd9Sstevel@tonic-gate /* 24307c478bd9Sstevel@tonic-gate * Traverse the list of known interposers to determine whether any 24317c478bd9Sstevel@tonic-gate * offer the same symbol. Note, the head of the link-map could be 24327c478bd9Sstevel@tonic-gate * identified as an interposer. If it is, make sure we only look for 24337c478bd9Sstevel@tonic-gate * symbol definitions. Otherwise, skip the head of the link-map, so 24347c478bd9Sstevel@tonic-gate * that we don't bind to any .plt references, or copy-relocations 24357c478bd9Sstevel@tonic-gate * unintentionally. 24367c478bd9Sstevel@tonic-gate */ 24377c478bd9Sstevel@tonic-gate lmp = lml->lm_head; 24387c478bd9Sstevel@tonic-gate sl = *slp; 24399a411307Srie if (((FLAGS(lmp) & MSK_RT_INTPOSE) == 0) || (sl.sl_flags & LKUP_COPY)) 24407c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(lmp); 24417c478bd9Sstevel@tonic-gate else 24427c478bd9Sstevel@tonic-gate sl.sl_flags &= ~LKUP_SPEC; 24437c478bd9Sstevel@tonic-gate 24447c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 24457c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_DELETE) 24467c478bd9Sstevel@tonic-gate continue; 24479a411307Srie if ((FLAGS(lmp) & MSK_RT_INTPOSE) == 0) 24487c478bd9Sstevel@tonic-gate break; 24497c478bd9Sstevel@tonic-gate 24507c478bd9Sstevel@tonic-gate if (callable(lmp, *dlmp, 0)) { 24519a411307Srie Rt_map *ilmp; 24529a411307Srie 24537c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 24549a411307Srie if (sym = SYMINTP(lmp)(&sl, &ilmp, binfo)) { 24559a411307Srie /* 24569a411307Srie * If this object provides individual symbol 24579a411307Srie * interposers, make sure that the symbol we 24589a411307Srie * have found is tagged as an interposer. 24599a411307Srie */ 24609a411307Srie if ((FLAGS(ilmp) & FLG_RT_SYMINTPO) && 24619a411307Srie (is_sym_interposer(ilmp, sym) == 0)) 24629a411307Srie continue; 24639a411307Srie 24649a411307Srie /* 24659a411307Srie * Indicate this binding has occurred to an 24669a411307Srie * interposer, and return the symbol. 24679a411307Srie */ 24687c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_INTERPOSE; 24699a411307Srie *dlmp = ilmp; 24707c478bd9Sstevel@tonic-gate return (sym); 24717c478bd9Sstevel@tonic-gate } 24727c478bd9Sstevel@tonic-gate } 24737c478bd9Sstevel@tonic-gate } 24747c478bd9Sstevel@tonic-gate return ((Sym *)0); 24757c478bd9Sstevel@tonic-gate } 24767c478bd9Sstevel@tonic-gate 24777c478bd9Sstevel@tonic-gate /* 24787c478bd9Sstevel@tonic-gate * If an object specifies direct bindings (it contains a syminfo structure 24797c478bd9Sstevel@tonic-gate * describing where each binding was established during link-editing, and the 24807c478bd9Sstevel@tonic-gate * object was built -Bdirect), then look for the symbol in the specific object. 24817c478bd9Sstevel@tonic-gate */ 24827c478bd9Sstevel@tonic-gate static Sym * 24837c478bd9Sstevel@tonic-gate lookup_sym_direct(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Syminfo *sip, 24847c478bd9Sstevel@tonic-gate Rt_map *lmp) 24857c478bd9Sstevel@tonic-gate { 24867c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 24877c478bd9Sstevel@tonic-gate Sym *sym; 24887c478bd9Sstevel@tonic-gate Slookup sl; 24897c478bd9Sstevel@tonic-gate 24907c478bd9Sstevel@tonic-gate /* 24917c478bd9Sstevel@tonic-gate * If a direct binding resolves to the definition of a copy relocated 24927c478bd9Sstevel@tonic-gate * variable, it must be redirected to the copy (in the executable) that 24937c478bd9Sstevel@tonic-gate * will eventually be made. Typically, this redirection occurs in 24947c478bd9Sstevel@tonic-gate * lookup_sym_interpose(). But, there's an edge condition. If a 24957c478bd9Sstevel@tonic-gate * directly bound executable contains pic code, there may be a 24967c478bd9Sstevel@tonic-gate * reference to a definition that will eventually have a copy made. 24977c478bd9Sstevel@tonic-gate * However, this copy relocation may not yet have occurred, because 24987c478bd9Sstevel@tonic-gate * the relocation making this reference comes before the relocation 24997c478bd9Sstevel@tonic-gate * that will create the copy. 25007c478bd9Sstevel@tonic-gate * Under direct bindings, the syminfo indicates that a copy will be 25017c478bd9Sstevel@tonic-gate * taken (SYMINFO_FLG_COPY). This can only be set in an executable. 25027c478bd9Sstevel@tonic-gate * Thus, the caller must be the executable, so bind to the destination 25037c478bd9Sstevel@tonic-gate * of the copy within the executable. 25047c478bd9Sstevel@tonic-gate */ 25057c478bd9Sstevel@tonic-gate if (((slp->sl_flags & LKUP_COPY) == 0) && 25067c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_COPY)) { 25077c478bd9Sstevel@tonic-gate 25087c478bd9Sstevel@tonic-gate slp->sl_imap = LIST(clmp)->lm_head; 25097c478bd9Sstevel@tonic-gate if (sym = SYMINTP(clmp)(slp, dlmp, binfo)) 25107c478bd9Sstevel@tonic-gate *binfo |= (DBG_BINFO_DIRECT | DBG_BINFO_COPYREF); 25117c478bd9Sstevel@tonic-gate return (sym); 25127c478bd9Sstevel@tonic-gate } 25137c478bd9Sstevel@tonic-gate 25147c478bd9Sstevel@tonic-gate /* 25157c478bd9Sstevel@tonic-gate * If we need to direct bind to our parent start looking in each caller 25167c478bd9Sstevel@tonic-gate * link map. 25177c478bd9Sstevel@tonic-gate */ 25187c478bd9Sstevel@tonic-gate sl = *slp; 25197c478bd9Sstevel@tonic-gate sl.sl_flags |= LKUP_DIRECT; 25207c478bd9Sstevel@tonic-gate sym = 0; 25217c478bd9Sstevel@tonic-gate 25227c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_PARENT) { 25237c478bd9Sstevel@tonic-gate Aliste off; 25247c478bd9Sstevel@tonic-gate Bnd_desc ** bdpp; 25257c478bd9Sstevel@tonic-gate 25267c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(CALLERS(clmp), off, bdpp)) { 25277c478bd9Sstevel@tonic-gate sl.sl_imap = lmp = (*bdpp)->b_caller; 25287c478bd9Sstevel@tonic-gate if ((sym = SYMINTP(lmp)(&sl, dlmp, binfo)) != 0) 25297c478bd9Sstevel@tonic-gate break; 25307c478bd9Sstevel@tonic-gate } 25317c478bd9Sstevel@tonic-gate } else { 25327c478bd9Sstevel@tonic-gate /* 25337c478bd9Sstevel@tonic-gate * If we need to direct bind to anything else look in the 25347c478bd9Sstevel@tonic-gate * link map associated with this symbol reference. 25357c478bd9Sstevel@tonic-gate */ 25367c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_SELF) 25377c478bd9Sstevel@tonic-gate sl.sl_imap = lmp = clmp; 25387c478bd9Sstevel@tonic-gate else 25397c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 25407c478bd9Sstevel@tonic-gate 25417c478bd9Sstevel@tonic-gate if (lmp) 25427c478bd9Sstevel@tonic-gate sym = SYMINTP(lmp)(&sl, dlmp, binfo); 25437c478bd9Sstevel@tonic-gate } 25447c478bd9Sstevel@tonic-gate 25457c478bd9Sstevel@tonic-gate if (sym) 25467c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_DIRECT; 25477c478bd9Sstevel@tonic-gate 25487c478bd9Sstevel@tonic-gate /* 25497c478bd9Sstevel@tonic-gate * If we've bound to an object, determine whether that object can be 25507c478bd9Sstevel@tonic-gate * interposed upon for this symbol. 25517c478bd9Sstevel@tonic-gate */ 25527c478bd9Sstevel@tonic-gate if (sym && (LIST(*dlmp)->lm_head != *dlmp) && 25537c478bd9Sstevel@tonic-gate (LIST(*dlmp) == LIST(clmp))) { 25547c478bd9Sstevel@tonic-gate Sym * isym; 25557c478bd9Sstevel@tonic-gate 25567c478bd9Sstevel@tonic-gate if ((isym = lookup_sym_interpose(slp, dlmp, binfo, 25577c478bd9Sstevel@tonic-gate LIST(*dlmp), sym)) != 0) 25587c478bd9Sstevel@tonic-gate return (isym); 25597c478bd9Sstevel@tonic-gate } 25607c478bd9Sstevel@tonic-gate 25617c478bd9Sstevel@tonic-gate return (sym); 25627c478bd9Sstevel@tonic-gate } 25637c478bd9Sstevel@tonic-gate 25647c478bd9Sstevel@tonic-gate static Sym * 25657c478bd9Sstevel@tonic-gate _lookup_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo, 25667c478bd9Sstevel@tonic-gate Aliste off) 25677c478bd9Sstevel@tonic-gate { 25687c478bd9Sstevel@tonic-gate Rt_map *lmp; 25697c478bd9Sstevel@tonic-gate 25707c478bd9Sstevel@tonic-gate /* 25717c478bd9Sstevel@tonic-gate * Copy relocations should start their search after the head of the 25727c478bd9Sstevel@tonic-gate * main link-map control list. 25737c478bd9Sstevel@tonic-gate */ 25747c478bd9Sstevel@tonic-gate if ((off == ALO_DATA) && (slp->sl_flags & LKUP_COPY) && ilmp) 25757c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(ilmp); 25767c478bd9Sstevel@tonic-gate else 25777c478bd9Sstevel@tonic-gate lmp = ilmp; 25787c478bd9Sstevel@tonic-gate 25797c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 25807c478bd9Sstevel@tonic-gate if (callable(slp->sl_cmap, lmp, 0)) { 25817c478bd9Sstevel@tonic-gate Sym *sym; 25827c478bd9Sstevel@tonic-gate 25837c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 25847c478bd9Sstevel@tonic-gate if ((sym = SYMINTP(lmp)(slp, dlmp, binfo)) != 0) 25857c478bd9Sstevel@tonic-gate return (sym); 25867c478bd9Sstevel@tonic-gate } 25877c478bd9Sstevel@tonic-gate } 25887c478bd9Sstevel@tonic-gate return (0); 25897c478bd9Sstevel@tonic-gate } 25907c478bd9Sstevel@tonic-gate 25917c478bd9Sstevel@tonic-gate static Sym * 25927c478bd9Sstevel@tonic-gate _lazy_find_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo) 25937c478bd9Sstevel@tonic-gate { 25947c478bd9Sstevel@tonic-gate Rt_map *lmp; 25957c478bd9Sstevel@tonic-gate 25967c478bd9Sstevel@tonic-gate for (lmp = ilmp; lmp; lmp = (Rt_map *)NEXT(lmp)) { 25977c478bd9Sstevel@tonic-gate if (LAZY(lmp) == 0) 25987c478bd9Sstevel@tonic-gate continue; 25997c478bd9Sstevel@tonic-gate if (callable(slp->sl_cmap, lmp, 0)) { 26007c478bd9Sstevel@tonic-gate Sym *sym; 26017c478bd9Sstevel@tonic-gate 26027c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 26037c478bd9Sstevel@tonic-gate if ((sym = elf_lazy_find_sym(slp, dlmp, binfo)) != 0) 26047c478bd9Sstevel@tonic-gate return (sym); 26057c478bd9Sstevel@tonic-gate } 26067c478bd9Sstevel@tonic-gate } 26077c478bd9Sstevel@tonic-gate return (0); 26087c478bd9Sstevel@tonic-gate } 26097c478bd9Sstevel@tonic-gate 26107c478bd9Sstevel@tonic-gate /* 26117c478bd9Sstevel@tonic-gate * Symbol lookup routine. Takes an ELF symbol name, and a list of link maps to 26127c478bd9Sstevel@tonic-gate * search (if the flag indicates LKUP_FIRST only the first link map of the list 26137c478bd9Sstevel@tonic-gate * is searched ie. we've been called from dlsym()). 26147c478bd9Sstevel@tonic-gate * If successful, return a pointer to the symbol table entry and a pointer to 26157c478bd9Sstevel@tonic-gate * the link map of the enclosing object. Else return a null pointer. 26167c478bd9Sstevel@tonic-gate * 26177c478bd9Sstevel@tonic-gate * To improve elf performance, we first compute the elf hash value and pass 26187c478bd9Sstevel@tonic-gate * it to each find_sym() routine. The elf function will use this value to 26197c478bd9Sstevel@tonic-gate * locate the symbol, the a.out function will simply ignore it. 26207c478bd9Sstevel@tonic-gate */ 26217c478bd9Sstevel@tonic-gate Sym * 26227c478bd9Sstevel@tonic-gate lookup_sym(Slookup *slp, Rt_map **dlmp, uint_t *binfo) 26237c478bd9Sstevel@tonic-gate { 26247c478bd9Sstevel@tonic-gate const char *name = slp->sl_name; 26257c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 26267c478bd9Sstevel@tonic-gate Rt_map *ilmp = slp->sl_imap, *lmp; 26277c478bd9Sstevel@tonic-gate uint_t flags = slp->sl_flags; 26287c478bd9Sstevel@tonic-gate ulong_t rsymndx; 26297c478bd9Sstevel@tonic-gate Sym *sym = 0; 26307c478bd9Sstevel@tonic-gate Syminfo *sip; 26317c478bd9Sstevel@tonic-gate Slookup sl; 26327c478bd9Sstevel@tonic-gate 26337c478bd9Sstevel@tonic-gate if (slp->sl_hash == 0) 26347c478bd9Sstevel@tonic-gate slp->sl_hash = elf_hash(name); 26357c478bd9Sstevel@tonic-gate *binfo = 0; 26367c478bd9Sstevel@tonic-gate 26377c478bd9Sstevel@tonic-gate /* 26387c478bd9Sstevel@tonic-gate * Search the initial link map for the required symbol (this category is 26397c478bd9Sstevel@tonic-gate * selected by dlsym(), where individual link maps are searched for a 26407c478bd9Sstevel@tonic-gate * required symbol. Therefore, we know we have permission to look at 26417c478bd9Sstevel@tonic-gate * the link map). 26427c478bd9Sstevel@tonic-gate */ 26437c478bd9Sstevel@tonic-gate if (flags & LKUP_FIRST) 26447c478bd9Sstevel@tonic-gate return (SYMINTP(ilmp)(slp, dlmp, binfo)); 26457c478bd9Sstevel@tonic-gate 26467c478bd9Sstevel@tonic-gate /* 26477c478bd9Sstevel@tonic-gate * Determine whether this lookup can be satisfied by an objects direct, 26487c478bd9Sstevel@tonic-gate * or lazy binding information. This is triggered by a relocation from 26497c478bd9Sstevel@tonic-gate * the object (hence rsymndx is set). 26507c478bd9Sstevel@tonic-gate */ 26517c478bd9Sstevel@tonic-gate if (((rsymndx = slp->sl_rsymndx) != 0) && 26527c478bd9Sstevel@tonic-gate ((sip = SYMINFO(clmp)) != 0)) { 26537c478bd9Sstevel@tonic-gate 26547c478bd9Sstevel@tonic-gate /* 26557c478bd9Sstevel@tonic-gate * Find the corresponding Syminfo entry for the original 26567c478bd9Sstevel@tonic-gate * referencing symbol. 26577c478bd9Sstevel@tonic-gate */ 26587c478bd9Sstevel@tonic-gate /* LINTED */ 26597c478bd9Sstevel@tonic-gate sip = (Syminfo *)((char *)sip + (rsymndx * SYMINENT(clmp))); 26607c478bd9Sstevel@tonic-gate 26617c478bd9Sstevel@tonic-gate /* 26627c478bd9Sstevel@tonic-gate * If the symbol information indicates a direct binding, 26637c478bd9Sstevel@tonic-gate * determine the link map that is required to satisfy the 26647c478bd9Sstevel@tonic-gate * binding. Note, if the dependency can not be found, but a 26657c478bd9Sstevel@tonic-gate * direct binding isn't required, we will still fall through 26667c478bd9Sstevel@tonic-gate * to perform any default symbol search. 26677c478bd9Sstevel@tonic-gate */ 26687c478bd9Sstevel@tonic-gate if (sip->si_flags & SYMINFO_FLG_DIRECT) { 26697c478bd9Sstevel@tonic-gate uint_t bound = sip->si_boundto; 26707c478bd9Sstevel@tonic-gate 26717c478bd9Sstevel@tonic-gate lmp = 0; 26727c478bd9Sstevel@tonic-gate if (bound < SYMINFO_BT_LOWRESERVE) 26737c478bd9Sstevel@tonic-gate lmp = elf_lazy_load(clmp, bound, name); 26747c478bd9Sstevel@tonic-gate 26757c478bd9Sstevel@tonic-gate /* 26767c478bd9Sstevel@tonic-gate * If direct bindings have been disabled, and this isn't 26777c478bd9Sstevel@tonic-gate * a translator, skip any direct binding now that we've 26787c478bd9Sstevel@tonic-gate * insured the resolving object has been loaded. 26797c478bd9Sstevel@tonic-gate * 26807c478bd9Sstevel@tonic-gate * If we need to direct bind to anything, we look in 26817c478bd9Sstevel@tonic-gate * ourselves, our parent, or in the link map we've just 26827c478bd9Sstevel@tonic-gate * loaded. Otherwise, even though we may have lazily 26837c478bd9Sstevel@tonic-gate * loaded an object we still continue to search for 26847c478bd9Sstevel@tonic-gate * symbols from the head of the link map list. 26857c478bd9Sstevel@tonic-gate */ 26867c478bd9Sstevel@tonic-gate if (((FLAGS(clmp) & FLG_RT_TRANS) || 26877c478bd9Sstevel@tonic-gate (!(LIST(clmp)->lm_tflags & LML_TFLG_NODIRECT))) && 26889a411307Srie ((FLAGS1(clmp) & FL1_RT_DIRECT) || 26897c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_DIRECTBIND))) { 26907c478bd9Sstevel@tonic-gate sym = lookup_sym_direct(slp, dlmp, binfo, 26917c478bd9Sstevel@tonic-gate sip, lmp); 26927c478bd9Sstevel@tonic-gate 26937c478bd9Sstevel@tonic-gate /* 26947c478bd9Sstevel@tonic-gate * If this direct binding has been disabled 26957c478bd9Sstevel@tonic-gate * (presumably because the symbol definition has 26967c478bd9Sstevel@tonic-gate * been changed since the referring object was 26977c478bd9Sstevel@tonic-gate * built), fall back to a standard symbol 26987c478bd9Sstevel@tonic-gate * search. 26997c478bd9Sstevel@tonic-gate */ 27007c478bd9Sstevel@tonic-gate if ((*binfo & BINFO_DIRECTDIS) == 0) 27017c478bd9Sstevel@tonic-gate return (sym); 27027c478bd9Sstevel@tonic-gate } 27037c478bd9Sstevel@tonic-gate } 27047c478bd9Sstevel@tonic-gate } 27057c478bd9Sstevel@tonic-gate 27067c478bd9Sstevel@tonic-gate sl = *slp; 27077c478bd9Sstevel@tonic-gate 27087c478bd9Sstevel@tonic-gate /* 27097c478bd9Sstevel@tonic-gate * If the referencing object has the DF_SYMBOLIC flag set, look in the 27107c478bd9Sstevel@tonic-gate * referencing object for the symbol first. Failing that, fall back to 27117c478bd9Sstevel@tonic-gate * our generic search. 27127c478bd9Sstevel@tonic-gate */ 27137c478bd9Sstevel@tonic-gate if (FLAGS1(clmp) & FL1_RT_SYMBOLIC) { 27147c478bd9Sstevel@tonic-gate sl.sl_imap = clmp; 27159a411307Srie if (sym = SYMINTP(clmp)(&sl, dlmp, binfo)) { 27169a411307Srie ulong_t dsymndx = (((ulong_t)sym - 27179a411307Srie (ulong_t)SYMTAB(*dlmp)) / SYMENT(*dlmp)); 27189a411307Srie 27199a411307Srie /* 27209a411307Srie * Make sure this symbol hasn't explicitly been defined 27219a411307Srie * as nodirect. 27229a411307Srie */ 27239a411307Srie if (((sip = SYMINFO(*dlmp)) == 0) || 27249a411307Srie /* LINTED */ 27259a411307Srie ((sip = (Syminfo *)((char *)sip + 27269a411307Srie (dsymndx * SYMINENT(*dlmp)))) == 0) || 27279a411307Srie ((sip->si_flags & SYMINFO_FLG_NOEXTDIRECT) == 0)) 27287c478bd9Sstevel@tonic-gate return (sym); 27297c478bd9Sstevel@tonic-gate } 27309a411307Srie } 27317c478bd9Sstevel@tonic-gate 27327c478bd9Sstevel@tonic-gate /* 27337c478bd9Sstevel@tonic-gate * If this lookup originates from a standard relocation, then traverse 27347c478bd9Sstevel@tonic-gate * all link-map lists inspecting any object that is available to this 27357c478bd9Sstevel@tonic-gate * caller. Otherwise, traverse the link-map list associate with the 27367c478bd9Sstevel@tonic-gate * caller. 27377c478bd9Sstevel@tonic-gate */ 27387c478bd9Sstevel@tonic-gate if (flags & LKUP_ALLCNTLIST) { 27397c478bd9Sstevel@tonic-gate Aliste off; 27407c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 27417c478bd9Sstevel@tonic-gate 27427c478bd9Sstevel@tonic-gate sym = 0; 27437c478bd9Sstevel@tonic-gate 27447c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(LIST(clmp)->lm_lists, off, lmc)) { 27457c478bd9Sstevel@tonic-gate if ((sym = _lookup_sym(lmc->lc_head, &sl, dlmp, 27467c478bd9Sstevel@tonic-gate binfo, off)) != 0) 27477c478bd9Sstevel@tonic-gate break; 27487c478bd9Sstevel@tonic-gate } 27497c478bd9Sstevel@tonic-gate } else 27507c478bd9Sstevel@tonic-gate sym = _lookup_sym(ilmp, &sl, dlmp, binfo, ALO_DATA); 27517c478bd9Sstevel@tonic-gate 27527c478bd9Sstevel@tonic-gate /* 27537c478bd9Sstevel@tonic-gate * To allow transitioning into a world of lazy loading dependencies see 27547c478bd9Sstevel@tonic-gate * if this link map contains objects that have lazy dependencies still 27557c478bd9Sstevel@tonic-gate * outstanding. If so, and we haven't been able to locate a non-weak 27567c478bd9Sstevel@tonic-gate * symbol reference, start bringing in any lazy dependencies to see if 27577c478bd9Sstevel@tonic-gate * the reference can be satisfied. Use of dlsym(RTLD_PROBE) sets the 27587c478bd9Sstevel@tonic-gate * LKUP_NOFALBACK flag, and this flag disables this fall back. 27597c478bd9Sstevel@tonic-gate */ 27607c478bd9Sstevel@tonic-gate if ((sym == 0) && ((sl.sl_flags & LKUP_NOFALBACK) == 0)) { 27617c478bd9Sstevel@tonic-gate if ((lmp = ilmp) == 0) 27627c478bd9Sstevel@tonic-gate lmp = LIST(clmp)->lm_head; 27637c478bd9Sstevel@tonic-gate if ((flags & LKUP_WEAK) || (LIST(lmp)->lm_lazy == 0)) 27647c478bd9Sstevel@tonic-gate return ((Sym *)0); 27657c478bd9Sstevel@tonic-gate 27665aefb655Srie DBG_CALL(Dbg_syms_lazy_rescan(LIST(clmp), name)); 27677c478bd9Sstevel@tonic-gate 27687c478bd9Sstevel@tonic-gate /* 27697c478bd9Sstevel@tonic-gate * If this request originated from a dlsym(RTLD_NEXT) then start 27707c478bd9Sstevel@tonic-gate * looking for dependencies from the caller, otherwise use the 27717c478bd9Sstevel@tonic-gate * initial link-map. 27727c478bd9Sstevel@tonic-gate */ 27737c478bd9Sstevel@tonic-gate if (flags & LKUP_NEXT) 27747c478bd9Sstevel@tonic-gate sym = _lazy_find_sym(clmp, &sl, dlmp, binfo); 27757c478bd9Sstevel@tonic-gate else { 27767c478bd9Sstevel@tonic-gate Aliste off; 27777c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 27787c478bd9Sstevel@tonic-gate 27797c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(LIST(clmp)->lm_lists, off, lmc)) { 27807c478bd9Sstevel@tonic-gate sl.sl_flags |= LKUP_NOFALBACK; 27817c478bd9Sstevel@tonic-gate if ((sym = _lazy_find_sym(lmc->lc_head, &sl, 27827c478bd9Sstevel@tonic-gate dlmp, binfo)) != 0) 27837c478bd9Sstevel@tonic-gate break; 27847c478bd9Sstevel@tonic-gate } 27857c478bd9Sstevel@tonic-gate } 27867c478bd9Sstevel@tonic-gate } 27877c478bd9Sstevel@tonic-gate 27887c478bd9Sstevel@tonic-gate /* 27897c478bd9Sstevel@tonic-gate * If the caller is restricted to a symbol search within its group, 27907c478bd9Sstevel@tonic-gate * determine if it is necessary to follow a binding from outside of 27917c478bd9Sstevel@tonic-gate * the group. 27927c478bd9Sstevel@tonic-gate */ 27937c478bd9Sstevel@tonic-gate if (sym && ((MODE(clmp) & (RTLD_GROUP | RTLD_WORLD)) == RTLD_GROUP)) { 27947c478bd9Sstevel@tonic-gate Sym * isym; 27957c478bd9Sstevel@tonic-gate 27967c478bd9Sstevel@tonic-gate if ((isym = lookup_sym_interpose(slp, dlmp, binfo, LIST(*dlmp), 27977c478bd9Sstevel@tonic-gate sym)) != 0) 27987c478bd9Sstevel@tonic-gate return (isym); 27997c478bd9Sstevel@tonic-gate } 28007c478bd9Sstevel@tonic-gate return (sym); 28017c478bd9Sstevel@tonic-gate } 28027c478bd9Sstevel@tonic-gate 28037c478bd9Sstevel@tonic-gate /* 28047c478bd9Sstevel@tonic-gate * Associate a binding descriptor with a caller and its dependency, or update 28057c478bd9Sstevel@tonic-gate * an existing descriptor. 28067c478bd9Sstevel@tonic-gate */ 28077c478bd9Sstevel@tonic-gate int 28087c478bd9Sstevel@tonic-gate bind_one(Rt_map *clmp, Rt_map *dlmp, uint_t flags) 28097c478bd9Sstevel@tonic-gate { 28107c478bd9Sstevel@tonic-gate Bnd_desc **bdpp, *bdp; 28117c478bd9Sstevel@tonic-gate Aliste off; 28127c478bd9Sstevel@tonic-gate int found = ALE_CREATE; 28137c478bd9Sstevel@tonic-gate 28147c478bd9Sstevel@tonic-gate /* 28157c478bd9Sstevel@tonic-gate * Determine whether a binding descriptor already exists between the 28167c478bd9Sstevel@tonic-gate * two objects. 28177c478bd9Sstevel@tonic-gate */ 28187c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(DEPENDS(clmp), off, bdpp)) { 28197c478bd9Sstevel@tonic-gate bdp = *bdpp; 28207c478bd9Sstevel@tonic-gate 28217c478bd9Sstevel@tonic-gate if (bdp->b_depend == dlmp) { 28227c478bd9Sstevel@tonic-gate found = ALE_EXISTS; 28237c478bd9Sstevel@tonic-gate break; 28247c478bd9Sstevel@tonic-gate } 28257c478bd9Sstevel@tonic-gate } 28267c478bd9Sstevel@tonic-gate 28277c478bd9Sstevel@tonic-gate if (found == ALE_CREATE) { 28287c478bd9Sstevel@tonic-gate /* 28297c478bd9Sstevel@tonic-gate * Create a new binding descriptor. 28307c478bd9Sstevel@tonic-gate */ 28317c478bd9Sstevel@tonic-gate if ((bdp = malloc(sizeof (Bnd_desc))) == 0) 28327c478bd9Sstevel@tonic-gate return (0); 28337c478bd9Sstevel@tonic-gate 28347c478bd9Sstevel@tonic-gate bdp->b_caller = clmp; 28357c478bd9Sstevel@tonic-gate bdp->b_depend = dlmp; 28367c478bd9Sstevel@tonic-gate bdp->b_flags = 0; 28377c478bd9Sstevel@tonic-gate 28387c478bd9Sstevel@tonic-gate /* 28397c478bd9Sstevel@tonic-gate * Append the binding descriptor to the caller and the 28407c478bd9Sstevel@tonic-gate * dependency. 28417c478bd9Sstevel@tonic-gate */ 28427c478bd9Sstevel@tonic-gate if (alist_append(&DEPENDS(clmp), &bdp, 28437c478bd9Sstevel@tonic-gate sizeof (Bnd_desc *), AL_CNT_DEPENDS) == 0) 28447c478bd9Sstevel@tonic-gate return (0); 28457c478bd9Sstevel@tonic-gate 28467c478bd9Sstevel@tonic-gate if (alist_append(&CALLERS(dlmp), &bdp, 28477c478bd9Sstevel@tonic-gate sizeof (Bnd_desc *), AL_CNT_CALLERS) == 0) 28487c478bd9Sstevel@tonic-gate return (0); 28497c478bd9Sstevel@tonic-gate } 28507c478bd9Sstevel@tonic-gate 28517c478bd9Sstevel@tonic-gate if ((found == ALE_CREATE) || ((bdp->b_flags & flags) != flags)) { 28527c478bd9Sstevel@tonic-gate bdp->b_flags |= flags; 28537c478bd9Sstevel@tonic-gate 28547c478bd9Sstevel@tonic-gate if (flags & BND_REFER) 28557c478bd9Sstevel@tonic-gate FLAGS1(dlmp) |= FL1_RT_USED; 28567c478bd9Sstevel@tonic-gate 28575aefb655Srie DBG_CALL(Dbg_file_bind_entry(LIST(clmp), bdp)); 28587c478bd9Sstevel@tonic-gate } 28597c478bd9Sstevel@tonic-gate return (found); 28607c478bd9Sstevel@tonic-gate } 28617c478bd9Sstevel@tonic-gate 28627c478bd9Sstevel@tonic-gate /* 28637c478bd9Sstevel@tonic-gate * Cleanup after relocation processing. 28647c478bd9Sstevel@tonic-gate */ 28657c478bd9Sstevel@tonic-gate int 28667c478bd9Sstevel@tonic-gate relocate_finish(Rt_map *lmp, Alist *bound, int textrel, int ret) 28677c478bd9Sstevel@tonic-gate { 28685aefb655Srie DBG_CALL(Dbg_reloc_run(lmp, 0, ret, DBG_REL_FINISH)); 28697c478bd9Sstevel@tonic-gate 28707c478bd9Sstevel@tonic-gate /* 28717c478bd9Sstevel@tonic-gate * Establish bindings to all objects that have been bound to. 28727c478bd9Sstevel@tonic-gate */ 28737c478bd9Sstevel@tonic-gate if (bound) { 28747c478bd9Sstevel@tonic-gate Aliste off; 28757c478bd9Sstevel@tonic-gate Rt_map **lmpp; 28767c478bd9Sstevel@tonic-gate 28777c478bd9Sstevel@tonic-gate if (ret) { 28787c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(bound, off, lmpp)) { 28797c478bd9Sstevel@tonic-gate if (bind_one(lmp, *lmpp, BND_REFER) == 0) { 28807c478bd9Sstevel@tonic-gate ret = 0; 28817c478bd9Sstevel@tonic-gate break; 28827c478bd9Sstevel@tonic-gate } 28837c478bd9Sstevel@tonic-gate } 28847c478bd9Sstevel@tonic-gate } 28857c478bd9Sstevel@tonic-gate free(bound); 28867c478bd9Sstevel@tonic-gate } 28877c478bd9Sstevel@tonic-gate 28887c478bd9Sstevel@tonic-gate /* 28897c478bd9Sstevel@tonic-gate * If we write enabled the text segment to perform these relocations 28907c478bd9Sstevel@tonic-gate * re-protect by disabling writes. 28917c478bd9Sstevel@tonic-gate */ 28927c478bd9Sstevel@tonic-gate if (textrel) 28937c478bd9Sstevel@tonic-gate (void) LM_SET_PROT(lmp)(lmp, 0); 28947c478bd9Sstevel@tonic-gate 28957c478bd9Sstevel@tonic-gate return (ret); 28967c478bd9Sstevel@tonic-gate } 2897