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 57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 77c478bd9Sstevel@tonic-gate * with the License. 87c478bd9Sstevel@tonic-gate * 97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 127c478bd9Sstevel@tonic-gate * and limitations under the License. 137c478bd9Sstevel@tonic-gate * 147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 197c478bd9Sstevel@tonic-gate * 207c478bd9Sstevel@tonic-gate * CDDL HEADER END 217c478bd9Sstevel@tonic-gate */ 227c478bd9Sstevel@tonic-gate /* 237c478bd9Sstevel@tonic-gate * Copyright (c) 1988 AT&T 247c478bd9Sstevel@tonic-gate * All Rights Reserved 257c478bd9Sstevel@tonic-gate * 267c478bd9Sstevel@tonic-gate * 277c478bd9Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 287c478bd9Sstevel@tonic-gate * Use is subject to license terms. 297c478bd9Sstevel@tonic-gate */ 307c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 317c478bd9Sstevel@tonic-gate 327c478bd9Sstevel@tonic-gate #include "_synonyms.h" 337c478bd9Sstevel@tonic-gate 347c478bd9Sstevel@tonic-gate #include <string.h> 357c478bd9Sstevel@tonic-gate #include <stdio.h> 367c478bd9Sstevel@tonic-gate #include <unistd.h> 377c478bd9Sstevel@tonic-gate #include <sys/stat.h> 387c478bd9Sstevel@tonic-gate #include <sys/mman.h> 397c478bd9Sstevel@tonic-gate #include <fcntl.h> 407c478bd9Sstevel@tonic-gate #include <limits.h> 417c478bd9Sstevel@tonic-gate #include <dlfcn.h> 427c478bd9Sstevel@tonic-gate #include <errno.h> 437c478bd9Sstevel@tonic-gate #include <link.h> 447c478bd9Sstevel@tonic-gate #include "_rtld.h" 457c478bd9Sstevel@tonic-gate #include "_audit.h" 467c478bd9Sstevel@tonic-gate #include "_elf.h" 477c478bd9Sstevel@tonic-gate #include "msg.h" 487c478bd9Sstevel@tonic-gate #include "debug.h" 497c478bd9Sstevel@tonic-gate #include "conv.h" 507c478bd9Sstevel@tonic-gate 517c478bd9Sstevel@tonic-gate static Fct * vector[] = { 527c478bd9Sstevel@tonic-gate &elf_fct, 537c478bd9Sstevel@tonic-gate #ifdef A_OUT 547c478bd9Sstevel@tonic-gate &aout_fct, 557c478bd9Sstevel@tonic-gate #endif 567c478bd9Sstevel@tonic-gate 0 577c478bd9Sstevel@tonic-gate }; 587c478bd9Sstevel@tonic-gate 597c478bd9Sstevel@tonic-gate /* 607c478bd9Sstevel@tonic-gate * If a load filter flag is in effect, and this object is a filter, trigger the 617c478bd9Sstevel@tonic-gate * loading of all its filtees. The load filter flag is in effect when creating 627c478bd9Sstevel@tonic-gate * configuration files, or when under the control of ldd(1), or the LD_LOADFLTR 637c478bd9Sstevel@tonic-gate * environment variable is set, or this object was built with the -zloadfltr 647c478bd9Sstevel@tonic-gate * flag. Otherwise, filtee loading is deferred until triggered by a relocation. 657c478bd9Sstevel@tonic-gate */ 667c478bd9Sstevel@tonic-gate static void 677c478bd9Sstevel@tonic-gate load_filtees(Rt_map *lmp) 687c478bd9Sstevel@tonic-gate { 697c478bd9Sstevel@tonic-gate if ((FLAGS1(lmp) & MSK_RT_FILTER) && 707c478bd9Sstevel@tonic-gate ((FLAGS(lmp) & FLG_RT_LOADFLTR) || 717c478bd9Sstevel@tonic-gate (LIST(lmp)->lm_tflags & LML_TFLG_LOADFLTR))) { 727c478bd9Sstevel@tonic-gate Dyninfo * dip = DYNINFO(lmp); 737c478bd9Sstevel@tonic-gate uint_t cnt, max = DYNINFOCNT(lmp); 747c478bd9Sstevel@tonic-gate Slookup sl; 757c478bd9Sstevel@tonic-gate 767c478bd9Sstevel@tonic-gate sl.sl_name = 0; 777c478bd9Sstevel@tonic-gate sl.sl_hash = 0; 787c478bd9Sstevel@tonic-gate sl.sl_imap = sl.sl_cmap = lmp; 797c478bd9Sstevel@tonic-gate 807c478bd9Sstevel@tonic-gate for (cnt = 0; cnt < max; cnt++, dip++) { 817c478bd9Sstevel@tonic-gate if (((dip->di_flags & MSK_DI_FILTER) == 0) || 827c478bd9Sstevel@tonic-gate ((dip->di_flags & FLG_DI_AUXFLTR) && 837c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_NOAUXFLTR))) 847c478bd9Sstevel@tonic-gate continue; 857c478bd9Sstevel@tonic-gate (void) elf_lookup_filtee(&sl, 0, 0, cnt); 867c478bd9Sstevel@tonic-gate } 877c478bd9Sstevel@tonic-gate } 887c478bd9Sstevel@tonic-gate } 897c478bd9Sstevel@tonic-gate 907c478bd9Sstevel@tonic-gate /* 917c478bd9Sstevel@tonic-gate * Analyze one or more link-maps of a link map control list. This routine is 927c478bd9Sstevel@tonic-gate * called at startup to continue the processing of the main executable. It is 937c478bd9Sstevel@tonic-gate * also called each time a new set of objects are loaded, ie. from filters, 947c478bd9Sstevel@tonic-gate * lazy-loaded objects, or dlopen(). 957c478bd9Sstevel@tonic-gate * 967c478bd9Sstevel@tonic-gate * In each instance we traverse the link-map control list starting with the 977c478bd9Sstevel@tonic-gate * initial object. As dependencies are analyzed they are added to the link-map 987c478bd9Sstevel@tonic-gate * control list. Thus the list grows as we traverse it - this results in the 997c478bd9Sstevel@tonic-gate * breadth first ordering of all needed objects. 1007c478bd9Sstevel@tonic-gate */ 1017c478bd9Sstevel@tonic-gate int 1027c478bd9Sstevel@tonic-gate analyze_lmc(Lm_list *lml, Aliste nlmco, Rt_map *nlmp) 1037c478bd9Sstevel@tonic-gate { 1047c478bd9Sstevel@tonic-gate Rt_map *lmp = nlmp; 1057c478bd9Sstevel@tonic-gate Lm_cntl *nlmc; 1067c478bd9Sstevel@tonic-gate int ret = 1; 1077c478bd9Sstevel@tonic-gate 1087c478bd9Sstevel@tonic-gate /* 1097c478bd9Sstevel@tonic-gate * If this link-map control list is being analyzed, return. The object 1107c478bd9Sstevel@tonic-gate * that has just been added will be picked up by the existing analysis 1117c478bd9Sstevel@tonic-gate * thread. Note, this is only really meaningful during process init- 1127c478bd9Sstevel@tonic-gate * ialization, as objects are added to the main link-map control list. 1137c478bd9Sstevel@tonic-gate * Following this initialization, each family of objects that are loaded 1147c478bd9Sstevel@tonic-gate * are added to a new link-map control list. 1157c478bd9Sstevel@tonic-gate */ 1167c478bd9Sstevel@tonic-gate /* LINTED */ 1177c478bd9Sstevel@tonic-gate nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 1187c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_ANALYZING) 1197c478bd9Sstevel@tonic-gate return (1); 1207c478bd9Sstevel@tonic-gate 1217c478bd9Sstevel@tonic-gate /* 1227c478bd9Sstevel@tonic-gate * If this object doesn't belong to the present link-map control list 1237c478bd9Sstevel@tonic-gate * then it must already have been analyzed, or it is in the process of 1247c478bd9Sstevel@tonic-gate * being analyzed prior to us recursing into this analysis. In either 1257c478bd9Sstevel@tonic-gate * case, ignore the object as it's already being taken care of. 1267c478bd9Sstevel@tonic-gate */ 1277c478bd9Sstevel@tonic-gate if (nlmco != CNTL(nlmp)) 1287c478bd9Sstevel@tonic-gate return (1); 1297c478bd9Sstevel@tonic-gate 1307c478bd9Sstevel@tonic-gate nlmc->lc_flags |= LMC_FLG_ANALYZING; 1317c478bd9Sstevel@tonic-gate 1327c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 1337c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & 1347c478bd9Sstevel@tonic-gate (FLG_RT_ANALZING | FLG_RT_ANALYZED | FLG_RT_DELETE)) 1357c478bd9Sstevel@tonic-gate continue; 1367c478bd9Sstevel@tonic-gate 1377c478bd9Sstevel@tonic-gate /* 1387c478bd9Sstevel@tonic-gate * Indicate that analyzing is under way. 1397c478bd9Sstevel@tonic-gate */ 1407c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_ANALZING; 1417c478bd9Sstevel@tonic-gate 1427c478bd9Sstevel@tonic-gate /* 1437c478bd9Sstevel@tonic-gate * If this link map represents a relocatable object, then we 1447c478bd9Sstevel@tonic-gate * need to finish the link-editing of the object at this point. 1457c478bd9Sstevel@tonic-gate */ 1467c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_OBJECT) { 1477c478bd9Sstevel@tonic-gate if (elf_obj_fini(lml, lmp) == 0) { 1487c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) 1497c478bd9Sstevel@tonic-gate continue; 1507c478bd9Sstevel@tonic-gate ret = 0; 1517c478bd9Sstevel@tonic-gate break; 1527c478bd9Sstevel@tonic-gate } 1537c478bd9Sstevel@tonic-gate } 1547c478bd9Sstevel@tonic-gate 1557c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_analyze(lmp)); 1567c478bd9Sstevel@tonic-gate 1577c478bd9Sstevel@tonic-gate /* 1587c478bd9Sstevel@tonic-gate * Establish any dependencies this object requires. 1597c478bd9Sstevel@tonic-gate */ 1607c478bd9Sstevel@tonic-gate if (LM_NEEDED(lmp)(lml, nlmco, lmp) == 0) { 1617c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) 1627c478bd9Sstevel@tonic-gate continue; 1637c478bd9Sstevel@tonic-gate ret = 0; 1647c478bd9Sstevel@tonic-gate break; 1657c478bd9Sstevel@tonic-gate } 1667c478bd9Sstevel@tonic-gate 1677c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_ANALZING; 1687c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_ANALYZED; 1697c478bd9Sstevel@tonic-gate 1707c478bd9Sstevel@tonic-gate /* 1717c478bd9Sstevel@tonic-gate * If we're building a configuration file, determine if this 1727c478bd9Sstevel@tonic-gate * object is a filter and if so load its filtees. This 1737c478bd9Sstevel@tonic-gate * traversal is only necessary for crle(1), as typical use of 1747c478bd9Sstevel@tonic-gate * an object will load filters as part of relocation processing. 1757c478bd9Sstevel@tonic-gate */ 1767c478bd9Sstevel@tonic-gate if (MODE(nlmp) & RTLD_CONFGEN) 1777c478bd9Sstevel@tonic-gate load_filtees(lmp); 1787c478bd9Sstevel@tonic-gate 1797c478bd9Sstevel@tonic-gate /* 1807c478bd9Sstevel@tonic-gate * If an interposer has been added, it will have been inserted 1817c478bd9Sstevel@tonic-gate * in the link-map before the link we're presently analyzing. 1827c478bd9Sstevel@tonic-gate * Break out of this analysis loop and return to the head of 1837c478bd9Sstevel@tonic-gate * the link-map control list to analyze the interposer. Note 1847c478bd9Sstevel@tonic-gate * that this rescan preserves the breadth first loading of 1857c478bd9Sstevel@tonic-gate * dependencies. 1867c478bd9Sstevel@tonic-gate */ 1877c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_REANALYZE) { 1887c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_REANALYZE; 1897c478bd9Sstevel@tonic-gate lmp = nlmc->lc_head; 1907c478bd9Sstevel@tonic-gate } 1917c478bd9Sstevel@tonic-gate } 1927c478bd9Sstevel@tonic-gate 1937c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_ANALYZING; 1947c478bd9Sstevel@tonic-gate 1957c478bd9Sstevel@tonic-gate return (ret); 1967c478bd9Sstevel@tonic-gate } 1977c478bd9Sstevel@tonic-gate 1987c478bd9Sstevel@tonic-gate /* 1997c478bd9Sstevel@tonic-gate * Copy relocation test. If the symbol definition is within .bss, then it's 2007c478bd9Sstevel@tonic-gate * zero filled, and as the destination is within .bss, we can skip copying 2017c478bd9Sstevel@tonic-gate * zero's to zero's. However, if the destination object has a MOVE table, it's 2027c478bd9Sstevel@tonic-gate * .bss might contain non-zero data, in which case copy it regardless. 2037c478bd9Sstevel@tonic-gate */ 2047c478bd9Sstevel@tonic-gate static int 2057c478bd9Sstevel@tonic-gate copy_zerobits(Rt_map *dlmp, Sym *dsym) 2067c478bd9Sstevel@tonic-gate { 2077c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & FLG_RT_MOVE) == 0) { 2087c478bd9Sstevel@tonic-gate Mmap *mmaps; 2097c478bd9Sstevel@tonic-gate caddr_t daddr = (caddr_t)dsym->st_value; 2107c478bd9Sstevel@tonic-gate 2117c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & FLG_RT_FIXED) == 0) 2127c478bd9Sstevel@tonic-gate daddr += ADDR(dlmp); 2137c478bd9Sstevel@tonic-gate 2147c478bd9Sstevel@tonic-gate for (mmaps = MMAPS(dlmp); mmaps->m_vaddr; mmaps++) { 2157c478bd9Sstevel@tonic-gate if ((mmaps->m_fsize != mmaps->m_msize) && 2167c478bd9Sstevel@tonic-gate (daddr >= (mmaps->m_vaddr + mmaps->m_fsize)) && 2177c478bd9Sstevel@tonic-gate (daddr < (mmaps->m_vaddr + mmaps->m_msize))) 2187c478bd9Sstevel@tonic-gate return (1); 2197c478bd9Sstevel@tonic-gate } 2207c478bd9Sstevel@tonic-gate } 2217c478bd9Sstevel@tonic-gate return (0); 2227c478bd9Sstevel@tonic-gate } 2237c478bd9Sstevel@tonic-gate 2247c478bd9Sstevel@tonic-gate /* 2257c478bd9Sstevel@tonic-gate * Relocate an individual object. 2267c478bd9Sstevel@tonic-gate */ 2277c478bd9Sstevel@tonic-gate static int 2287c478bd9Sstevel@tonic-gate relocate_so(Lm_list *lml, Rt_map *lmp, int *relocated, int now) 2297c478bd9Sstevel@tonic-gate { 2307c478bd9Sstevel@tonic-gate /* 2317c478bd9Sstevel@tonic-gate * If we're running under ldd(1), and haven't been asked to trace any 2327c478bd9Sstevel@tonic-gate * warnings, skip any actual relocation processing. 2337c478bd9Sstevel@tonic-gate */ 2347c478bd9Sstevel@tonic-gate if (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 2357c478bd9Sstevel@tonic-gate (lml->lm_flags & LML_FLG_TRC_WARN)) { 2367c478bd9Sstevel@tonic-gate 2377c478bd9Sstevel@tonic-gate if (relocated) 2387c478bd9Sstevel@tonic-gate (*relocated)++; 2397c478bd9Sstevel@tonic-gate 2407c478bd9Sstevel@tonic-gate if ((LM_RELOC(lmp)(lmp, now) == 0) && 2417c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0)) 2427c478bd9Sstevel@tonic-gate return (0); 2437c478bd9Sstevel@tonic-gate } 2447c478bd9Sstevel@tonic-gate return (1); 2457c478bd9Sstevel@tonic-gate } 2467c478bd9Sstevel@tonic-gate 2477c478bd9Sstevel@tonic-gate /* 2487c478bd9Sstevel@tonic-gate * Relocate the objects on a link-map control list. 2497c478bd9Sstevel@tonic-gate */ 2507c478bd9Sstevel@tonic-gate static int 2517c478bd9Sstevel@tonic-gate _relocate_lmc(Lm_list *lml, Rt_map *nlmp, int *relocated) 2527c478bd9Sstevel@tonic-gate { 2537c478bd9Sstevel@tonic-gate Rt_map *lmp; 2547c478bd9Sstevel@tonic-gate 2557c478bd9Sstevel@tonic-gate for (lmp = nlmp; lmp; lmp = (Rt_map *)NEXT(lmp)) { 2567c478bd9Sstevel@tonic-gate /* 2577c478bd9Sstevel@tonic-gate * If this object has already been relocated, we're done. If 2587c478bd9Sstevel@tonic-gate * this object is being deleted, skip it, there's probably a 2597c478bd9Sstevel@tonic-gate * relocation error somewhere that's causing this deletion. 2607c478bd9Sstevel@tonic-gate */ 2617c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & 2627c478bd9Sstevel@tonic-gate (FLG_RT_RELOCING | FLG_RT_RELOCED | FLG_RT_DELETE)) 2637c478bd9Sstevel@tonic-gate continue; 2647c478bd9Sstevel@tonic-gate 2657c478bd9Sstevel@tonic-gate /* 2667c478bd9Sstevel@tonic-gate * Indicate that relocation processing is under way. 2677c478bd9Sstevel@tonic-gate */ 2687c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_RELOCING; 2697c478bd9Sstevel@tonic-gate 2707c478bd9Sstevel@tonic-gate /* 2717c478bd9Sstevel@tonic-gate * Relocate the object. 2727c478bd9Sstevel@tonic-gate */ 2737c478bd9Sstevel@tonic-gate if (relocate_so(lml, lmp, relocated, 0) == 0) 2747c478bd9Sstevel@tonic-gate return (0); 2757c478bd9Sstevel@tonic-gate 2767c478bd9Sstevel@tonic-gate /* 2777c478bd9Sstevel@tonic-gate * Indicate that the objects relocation is complete. 2787c478bd9Sstevel@tonic-gate */ 2797c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_RELOCING; 2807c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_RELOCED; 2817c478bd9Sstevel@tonic-gate 2827c478bd9Sstevel@tonic-gate /* 2837c478bd9Sstevel@tonic-gate * Mark this object's init is available for harvesting. Under 2847c478bd9Sstevel@tonic-gate * ldd(1) this marking is necessary for -i (tsort) gathering. 2857c478bd9Sstevel@tonic-gate */ 2867c478bd9Sstevel@tonic-gate lml->lm_init++; 287*dffec89cSrie lml->lm_flags |= LML_FLG_OBJADDED; 2887c478bd9Sstevel@tonic-gate 2897c478bd9Sstevel@tonic-gate /* 2907c478bd9Sstevel@tonic-gate * None of the following processing is necessary under ldd(). 2917c478bd9Sstevel@tonic-gate */ 2927c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) { 2937c478bd9Sstevel@tonic-gate /* 2947c478bd9Sstevel@tonic-gate * Process any move data. 2957c478bd9Sstevel@tonic-gate */ 2967c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_MOVE) 2977c478bd9Sstevel@tonic-gate move_data(lmp); 2987c478bd9Sstevel@tonic-gate 2997c478bd9Sstevel@tonic-gate /* 3007c478bd9Sstevel@tonic-gate * Process any DT_SUNW_RTLDINFO information now the 3017c478bd9Sstevel@tonic-gate * object is relocated, and remove the RTLDINFO 3027c478bd9Sstevel@tonic-gate * infrastructure as it won't be needed anymore. 3037c478bd9Sstevel@tonic-gate * 3047c478bd9Sstevel@tonic-gate * We wait until lmp == lm_info_lmp, as it's at this 3057c478bd9Sstevel@tonic-gate * stage we know the object contributing RTLDINFO has 3067c478bd9Sstevel@tonic-gate * been properly relocated. 3077c478bd9Sstevel@tonic-gate */ 3087c478bd9Sstevel@tonic-gate if ((FCT(lmp) == &elf_fct) && (lml->lm_rtldinfo) && 3097c478bd9Sstevel@tonic-gate (lmp == lml->lm_info_lmp)) { 3107c478bd9Sstevel@tonic-gate Aliste off; 3117c478bd9Sstevel@tonic-gate Lc_interface ** funcs; 3127c478bd9Sstevel@tonic-gate 3137c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(lml->lm_rtldinfo, 3147c478bd9Sstevel@tonic-gate off, funcs)) 3157c478bd9Sstevel@tonic-gate get_lcinterface(lmp, *funcs); 3167c478bd9Sstevel@tonic-gate free(lml->lm_rtldinfo); 3177c478bd9Sstevel@tonic-gate lml->lm_rtldinfo = 0; 3187c478bd9Sstevel@tonic-gate } 3197c478bd9Sstevel@tonic-gate } 3207c478bd9Sstevel@tonic-gate 3217c478bd9Sstevel@tonic-gate /* 3227c478bd9Sstevel@tonic-gate * Determine if this object is a filter, and if a load filter 3237c478bd9Sstevel@tonic-gate * flag is in effect, trigger the loading of all its filtees. 3247c478bd9Sstevel@tonic-gate */ 3257c478bd9Sstevel@tonic-gate load_filtees(lmp); 3267c478bd9Sstevel@tonic-gate } 3277c478bd9Sstevel@tonic-gate 3287c478bd9Sstevel@tonic-gate /* 3297c478bd9Sstevel@tonic-gate * Perform special copy relocations. These are only meaningful for 3307c478bd9Sstevel@tonic-gate * dynamic executables (fixed and head of their link-map list). If 3317c478bd9Sstevel@tonic-gate * this ever has to change then the infrastructure of COPY() has to 3327c478bd9Sstevel@tonic-gate * change as presently this element is used to capture both receiver 3337c478bd9Sstevel@tonic-gate * and supplier of copy data. 3347c478bd9Sstevel@tonic-gate */ 3357c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_FIXED) && (nlmp == LIST(nlmp)->lm_head) && 3367c478bd9Sstevel@tonic-gate (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 3377c478bd9Sstevel@tonic-gate (lml->lm_flags & LML_FLG_TRC_WARN))) { 3387c478bd9Sstevel@tonic-gate Rt_map ** lmpp; 3397c478bd9Sstevel@tonic-gate Aliste off1; 3407c478bd9Sstevel@tonic-gate Word tracing; 3417c478bd9Sstevel@tonic-gate 3427c478bd9Sstevel@tonic-gate #if defined(__sparc) || defined(__amd64) 3437c478bd9Sstevel@tonic-gate /* XX64 don't need this once the compilers are fixed */ 3447c478bd9Sstevel@tonic-gate #elif defined(i386) 3457c478bd9Sstevel@tonic-gate if (elf_copy_gen(nlmp) == 0) 3467c478bd9Sstevel@tonic-gate return (0); 3477c478bd9Sstevel@tonic-gate #endif 3487c478bd9Sstevel@tonic-gate 3497c478bd9Sstevel@tonic-gate if (COPY(nlmp) == 0) 3507c478bd9Sstevel@tonic-gate return (1); 3517c478bd9Sstevel@tonic-gate 3527c478bd9Sstevel@tonic-gate if ((LIST(nlmp)->lm_flags & LML_FLG_TRC_ENABLE) && 3537c478bd9Sstevel@tonic-gate (((rtld_flags & RT_FL_SILENCERR) == 0) || 3547c478bd9Sstevel@tonic-gate (LIST(nlmp)->lm_flags & LML_FLG_TRC_VERBOSE))) 3557c478bd9Sstevel@tonic-gate tracing = 1; 3567c478bd9Sstevel@tonic-gate else 3577c478bd9Sstevel@tonic-gate tracing = 0; 3587c478bd9Sstevel@tonic-gate 3597c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_nl()); 3607c478bd9Sstevel@tonic-gate 3617c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(COPY(nlmp), off1, lmpp)) { 3627c478bd9Sstevel@tonic-gate Rt_map * lmp = *lmpp; 3637c478bd9Sstevel@tonic-gate Rel_copy * rcp; 3647c478bd9Sstevel@tonic-gate Aliste off2; 3657c478bd9Sstevel@tonic-gate 3667c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(COPY(lmp), off2, rcp)) { 3677c478bd9Sstevel@tonic-gate int zero; 3687c478bd9Sstevel@tonic-gate 3697c478bd9Sstevel@tonic-gate /* 3707c478bd9Sstevel@tonic-gate * Only copy the bits if it's from non-zero 3717c478bd9Sstevel@tonic-gate * filled memory. 3727c478bd9Sstevel@tonic-gate */ 3737c478bd9Sstevel@tonic-gate zero = copy_zerobits(rcp->r_dlmp, rcp->r_dsym); 3747c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_reloc_copy(NAME(rcp->r_dlmp), 3757c478bd9Sstevel@tonic-gate NAME(nlmp), rcp->r_name, zero)); 3767c478bd9Sstevel@tonic-gate if (zero) 3777c478bd9Sstevel@tonic-gate continue; 3787c478bd9Sstevel@tonic-gate 3797c478bd9Sstevel@tonic-gate (void) memcpy(rcp->r_radd, rcp->r_dadd, 3807c478bd9Sstevel@tonic-gate rcp->r_size); 3817c478bd9Sstevel@tonic-gate 3827c478bd9Sstevel@tonic-gate if ((tracing == 0) || ((FLAGS1(rcp->r_dlmp) & 3837c478bd9Sstevel@tonic-gate FL1_RT_DISPREL) == 0)) 3847c478bd9Sstevel@tonic-gate continue; 3857c478bd9Sstevel@tonic-gate 3867c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_REL_CPYDISP), 3877c478bd9Sstevel@tonic-gate demangle(rcp->r_name), NAME(rcp->r_dlmp)); 3887c478bd9Sstevel@tonic-gate } 3897c478bd9Sstevel@tonic-gate } 3907c478bd9Sstevel@tonic-gate 3917c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_nl()); 3927c478bd9Sstevel@tonic-gate 3937c478bd9Sstevel@tonic-gate free(COPY(nlmp)); 3947c478bd9Sstevel@tonic-gate COPY(nlmp) = 0; 3957c478bd9Sstevel@tonic-gate } 3967c478bd9Sstevel@tonic-gate return (1); 3977c478bd9Sstevel@tonic-gate } 3987c478bd9Sstevel@tonic-gate 3997c478bd9Sstevel@tonic-gate int 4007c478bd9Sstevel@tonic-gate relocate_lmc(Lm_list *lml, Aliste nlmco, Rt_map *nlmp) 4017c478bd9Sstevel@tonic-gate { 4027c478bd9Sstevel@tonic-gate int lret = 1, pret = 1; 4037c478bd9Sstevel@tonic-gate Alist *alp; 4047c478bd9Sstevel@tonic-gate Aliste plmco; 4057c478bd9Sstevel@tonic-gate Lm_cntl *plmc, *nlmc; 4067c478bd9Sstevel@tonic-gate 4077c478bd9Sstevel@tonic-gate /* 4087c478bd9Sstevel@tonic-gate * If this link-map control list is being relocated, return. The object 4097c478bd9Sstevel@tonic-gate * that has just been added will be picked up by the existing relocation 4107c478bd9Sstevel@tonic-gate * thread. Note, this is only really meaningful during process init- 4117c478bd9Sstevel@tonic-gate * ialization, as objects are added to the main link-map control list. 4127c478bd9Sstevel@tonic-gate * Following this initialization, each family of objects that are loaded 4137c478bd9Sstevel@tonic-gate * are added to a new link-map control list. 4147c478bd9Sstevel@tonic-gate */ 4157c478bd9Sstevel@tonic-gate /* LINTED */ 4167c478bd9Sstevel@tonic-gate nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 4177c478bd9Sstevel@tonic-gate 4187c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_RELOCATING) 4197c478bd9Sstevel@tonic-gate return (1); 4207c478bd9Sstevel@tonic-gate 4217c478bd9Sstevel@tonic-gate nlmc->lc_flags |= LMC_FLG_RELOCATING; 4227c478bd9Sstevel@tonic-gate 4237c478bd9Sstevel@tonic-gate /* 4247c478bd9Sstevel@tonic-gate * Relocate one or more link-maps of a link map control list. If this 4257c478bd9Sstevel@tonic-gate * object doesn't belong to the present link-map control list then it 4267c478bd9Sstevel@tonic-gate * must already have been relocated, or it is in the process of being 4277c478bd9Sstevel@tonic-gate * relocated prior to us recursing into this relocation. In either 4287c478bd9Sstevel@tonic-gate * case, ignore the object as it's already being taken care of, however, 4297c478bd9Sstevel@tonic-gate * fall through and capture any relocation promotions that might have 4307c478bd9Sstevel@tonic-gate * been established from the reference mode of this object. 4317c478bd9Sstevel@tonic-gate * 4327c478bd9Sstevel@tonic-gate * If we're generating a configuration file using crle(1), two passes 4337c478bd9Sstevel@tonic-gate * may be involved. Under the first pass, RTLD_CONFGEN is set. Under 4347c478bd9Sstevel@tonic-gate * this pass, crle() loads objects into the process address space. No 4357c478bd9Sstevel@tonic-gate * relocation is necessary at this point, we simply need to analyze the 4367c478bd9Sstevel@tonic-gate * objects to insure any directly bound dependencies, filtees, etc. 4377c478bd9Sstevel@tonic-gate * get loaded. Although we skip the relocation, fall through to insure 4387c478bd9Sstevel@tonic-gate * any control lists are maintained appropriately. 4397c478bd9Sstevel@tonic-gate * 4407c478bd9Sstevel@tonic-gate * If objects are to be dldump(3c)'ed, crle(1) makes a second pass, 4417c478bd9Sstevel@tonic-gate * using RTLD_NOW and RTLD_CONFGEN. The RTLD_NOW effectively carries 4427c478bd9Sstevel@tonic-gate * out the relocations of all loaded objects. 4437c478bd9Sstevel@tonic-gate */ 4447c478bd9Sstevel@tonic-gate if ((nlmco == CNTL(nlmp)) && 4457c478bd9Sstevel@tonic-gate ((MODE(nlmp) & (RTLD_NOW | RTLD_CONFGEN)) != RTLD_CONFGEN)) { 4467c478bd9Sstevel@tonic-gate int relocated = 0; 4477c478bd9Sstevel@tonic-gate 4487c478bd9Sstevel@tonic-gate /* 4497c478bd9Sstevel@tonic-gate * Determine whether the initial link-map control list has 4507c478bd9Sstevel@tonic-gate * started relocation. From this point, should any interposing 4517c478bd9Sstevel@tonic-gate * objects be added to this link-map control list, the objects 4527c478bd9Sstevel@tonic-gate * are demoted to standard objects. Their interposition can't 4537c478bd9Sstevel@tonic-gate * be guaranteed once relocations have been carried out. 4547c478bd9Sstevel@tonic-gate */ 4557c478bd9Sstevel@tonic-gate if (nlmco == ALO_DATA) 4567c478bd9Sstevel@tonic-gate lml->lm_flags |= LML_FLG_STARTREL; 4577c478bd9Sstevel@tonic-gate 4587c478bd9Sstevel@tonic-gate /* 4597c478bd9Sstevel@tonic-gate * Relocate the link-map control list. 4607c478bd9Sstevel@tonic-gate */ 4617c478bd9Sstevel@tonic-gate lret = _relocate_lmc(lml, nlmp, &relocated); 4627c478bd9Sstevel@tonic-gate 4637c478bd9Sstevel@tonic-gate /* 4647c478bd9Sstevel@tonic-gate * At this point we've completed the addition of a new group of 4657c478bd9Sstevel@tonic-gate * objects, either the initial objects that start the process 4667c478bd9Sstevel@tonic-gate * (called from setup()), a group added through lazy loading or 4677c478bd9Sstevel@tonic-gate * filters, or from a dlopen() request. Indicate to the 4687c478bd9Sstevel@tonic-gate * debuggers that new objects have been added. 4697c478bd9Sstevel@tonic-gate */ 4707c478bd9Sstevel@tonic-gate if (relocated && lret && 4717c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_DBNOTIF) == 0)) 4727c478bd9Sstevel@tonic-gate rd_event(lml, RD_DLACTIVITY, RT_ADD); 4737c478bd9Sstevel@tonic-gate } 4747c478bd9Sstevel@tonic-gate 4757c478bd9Sstevel@tonic-gate /* 4767c478bd9Sstevel@tonic-gate * Determine the new, and previous link-map control lists. 4777c478bd9Sstevel@tonic-gate */ 4787c478bd9Sstevel@tonic-gate if (nlmco == ALO_DATA) 4797c478bd9Sstevel@tonic-gate plmc = nlmc; 4807c478bd9Sstevel@tonic-gate else { 4817c478bd9Sstevel@tonic-gate plmco = nlmco - lml->lm_lists->al_size; 4827c478bd9Sstevel@tonic-gate /* LINTED */ 4837c478bd9Sstevel@tonic-gate plmc = (Lm_cntl *)((char *)lml->lm_lists + plmco); 4847c478bd9Sstevel@tonic-gate } 4857c478bd9Sstevel@tonic-gate 4867c478bd9Sstevel@tonic-gate /* 4877c478bd9Sstevel@tonic-gate * Having completed this control list of objects, they can now be bound 4887c478bd9Sstevel@tonic-gate * to from other objects. Move this control list to the control list 4897c478bd9Sstevel@tonic-gate * that precedes it. Although this control list may have only bound to 4907c478bd9Sstevel@tonic-gate * controls lists much higher up the control list stack, it must only 4917c478bd9Sstevel@tonic-gate * be moved up one control list so as to preserve the link-map order 4927c478bd9Sstevel@tonic-gate * that may have already been traversed in search of symbols. 4937c478bd9Sstevel@tonic-gate */ 4947c478bd9Sstevel@tonic-gate if (lret && (nlmco != ALO_DATA) && nlmc->lc_head) 4957c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 4967c478bd9Sstevel@tonic-gate 4977c478bd9Sstevel@tonic-gate /* 4987c478bd9Sstevel@tonic-gate * Determine whether existing objects that have already been relocated, 4997c478bd9Sstevel@tonic-gate * need any additional relocations performed. This can occur when new 5007c478bd9Sstevel@tonic-gate * objects are loaded with RTLD_NOW, and these new objects have 5017c478bd9Sstevel@tonic-gate * dependencies on objects that are already loaded. Note, that we peel 5027c478bd9Sstevel@tonic-gate * any relocation promotions off of one control list at a time. This 5037c478bd9Sstevel@tonic-gate * prevents relocations from being bound to objects that might yet fail 5047c478bd9Sstevel@tonic-gate * to relocate themselves. 5057c478bd9Sstevel@tonic-gate */ 5067c478bd9Sstevel@tonic-gate while ((alp = plmc->lc_now) != 0) { 5077c478bd9Sstevel@tonic-gate Aliste off; 5087c478bd9Sstevel@tonic-gate Rt_map **lmpp; 5097c478bd9Sstevel@tonic-gate 5107c478bd9Sstevel@tonic-gate /* 5117c478bd9Sstevel@tonic-gate * Remove the relocation promotion list, as performing more 5127c478bd9Sstevel@tonic-gate * relocations may result in discovering more objects that need 5137c478bd9Sstevel@tonic-gate * promotion. 5147c478bd9Sstevel@tonic-gate */ 5157c478bd9Sstevel@tonic-gate plmc->lc_now = 0; 5167c478bd9Sstevel@tonic-gate 5177c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(alp, off, lmpp)) { 5187c478bd9Sstevel@tonic-gate Rt_map *lmp = *lmpp; 5197c478bd9Sstevel@tonic-gate 5207c478bd9Sstevel@tonic-gate /* 5217c478bd9Sstevel@tonic-gate * If the original relocation of the link-map control 5227c478bd9Sstevel@tonic-gate * list failed, or one of the relocation promotions of 5237c478bd9Sstevel@tonic-gate * this loop has failed, demote any pending objects 5247c478bd9Sstevel@tonic-gate * relocation mode. 5257c478bd9Sstevel@tonic-gate */ 5267c478bd9Sstevel@tonic-gate if ((lret == 0) || (pret == 0)) { 5277c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_NOW; 5287c478bd9Sstevel@tonic-gate MODE(lmp) |= RTLD_LAZY; 5297c478bd9Sstevel@tonic-gate continue; 5307c478bd9Sstevel@tonic-gate } 5317c478bd9Sstevel@tonic-gate 5327c478bd9Sstevel@tonic-gate /* 5337c478bd9Sstevel@tonic-gate * If a relocation fails, save the error condition. 5347c478bd9Sstevel@tonic-gate * It's possible that all new objects on the original 5357c478bd9Sstevel@tonic-gate * link-map control list have been relocated 5367c478bd9Sstevel@tonic-gate * successfully, but if the user request requires 5377c478bd9Sstevel@tonic-gate * promoting objects that have already been loaded, we 5387c478bd9Sstevel@tonic-gate * have to indicate that this operation couldn't be 5397c478bd9Sstevel@tonic-gate * performed. The unrelocated objects are in use on 5407c478bd9Sstevel@tonic-gate * another control list, and may continue to be used. 5417c478bd9Sstevel@tonic-gate * If the .plt that resulted in the error is called, 5427c478bd9Sstevel@tonic-gate * then the process will receive a fatal error at that 5437c478bd9Sstevel@tonic-gate * time. But, the .plt may never be called. 5447c478bd9Sstevel@tonic-gate */ 5457c478bd9Sstevel@tonic-gate if (relocate_so(lml, lmp, 0, 1) == 0) 5467c478bd9Sstevel@tonic-gate pret = 0; 5477c478bd9Sstevel@tonic-gate } 5487c478bd9Sstevel@tonic-gate 5497c478bd9Sstevel@tonic-gate /* 5507c478bd9Sstevel@tonic-gate * Having promoted any objects, determine whether additional 5517c478bd9Sstevel@tonic-gate * dependencies were added, and if so move them to the previous 5527c478bd9Sstevel@tonic-gate * link-map control list. 5537c478bd9Sstevel@tonic-gate */ 5547c478bd9Sstevel@tonic-gate if ((nlmco != ALO_DATA) && nlmc->lc_head) 5557c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 5567c478bd9Sstevel@tonic-gate 5577c478bd9Sstevel@tonic-gate (void) free(alp); 5587c478bd9Sstevel@tonic-gate } 5597c478bd9Sstevel@tonic-gate 5607c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_RELOCATING; 5617c478bd9Sstevel@tonic-gate 5627c478bd9Sstevel@tonic-gate if (lret && pret) 5637c478bd9Sstevel@tonic-gate return (1); 5647c478bd9Sstevel@tonic-gate else 5657c478bd9Sstevel@tonic-gate return (0); 5667c478bd9Sstevel@tonic-gate } 5677c478bd9Sstevel@tonic-gate 5687c478bd9Sstevel@tonic-gate /* 5697c478bd9Sstevel@tonic-gate * Inherit the first rejection message for possible later diagnostics. 5707c478bd9Sstevel@tonic-gate * 5717c478bd9Sstevel@tonic-gate * Any attempt to process a file that is unsuccessful, should be accompanied 5727c478bd9Sstevel@tonic-gate * with an error diagnostic. However, some operations like searching for a 5737c478bd9Sstevel@tonic-gate * simple filename, involve trying numerous paths, and an error message for each 5747c478bd9Sstevel@tonic-gate * lookup is not required. Although a multiple search can fail, it's possible 5757c478bd9Sstevel@tonic-gate * that a file was found, but was rejected because it was the wrong type. 5767c478bd9Sstevel@tonic-gate * To satisfy these possibilities, the first failure is recorded as a rejection 5777c478bd9Sstevel@tonic-gate * message, and this message is used later for a more specific diagnostic. 5787c478bd9Sstevel@tonic-gate * 5797c478bd9Sstevel@tonic-gate * File searches are focused at load_one(), and from here a rejection descriptor 5807c478bd9Sstevel@tonic-gate * is passed down to various child routines. If these child routines can 5817c478bd9Sstevel@tonic-gate * process multiple files, then they will maintain their own rejection desc- 5827c478bd9Sstevel@tonic-gate * riptor. This is filled in for any failures, and a diagnostic produced to 5837c478bd9Sstevel@tonic-gate * reflect the failure. The child routines then employ rejection_inherit() to 5847c478bd9Sstevel@tonic-gate * pass the first rejection message back to load_one(). 5857c478bd9Sstevel@tonic-gate * 5867c478bd9Sstevel@tonic-gate * Note that the name, and rejection string must be duplicated, as the name 5877c478bd9Sstevel@tonic-gate * buffer and error string buffer (see conv_ routines) may be reused for 5887c478bd9Sstevel@tonic-gate * additional processing or rejection messages. 5897c478bd9Sstevel@tonic-gate * 5907c478bd9Sstevel@tonic-gate * As this routine is called to clean up after a failed open, remove any 5917c478bd9Sstevel@tonic-gate * resolved pathname that might have been allocated as the file was processed. 5927c478bd9Sstevel@tonic-gate */ 5937c478bd9Sstevel@tonic-gate void 5947c478bd9Sstevel@tonic-gate rejection_inherit(Rej_desc *rej1, Rej_desc *rej2, Fdesc *fdp) 5957c478bd9Sstevel@tonic-gate { 5967c478bd9Sstevel@tonic-gate if (rej2->rej_type && (rej1->rej_type == 0)) { 5977c478bd9Sstevel@tonic-gate rej1->rej_type = rej2->rej_type; 5987c478bd9Sstevel@tonic-gate rej1->rej_info = rej2->rej_info; 5997c478bd9Sstevel@tonic-gate rej1->rej_flag = rej2->rej_flag; 6007c478bd9Sstevel@tonic-gate if (rej2->rej_name) 6017c478bd9Sstevel@tonic-gate rej1->rej_name = strdup(rej2->rej_name); 6027c478bd9Sstevel@tonic-gate if (rej2->rej_str) { 6037c478bd9Sstevel@tonic-gate if ((rej1->rej_str = strdup(rej2->rej_str)) == 0) 6047c478bd9Sstevel@tonic-gate rej1->rej_str = MSG_ORIG(MSG_EMG_ENOMEM); 6057c478bd9Sstevel@tonic-gate } 6067c478bd9Sstevel@tonic-gate } 6077c478bd9Sstevel@tonic-gate if (fdp && fdp->fd_nname && fdp->fd_pname && 6087c478bd9Sstevel@tonic-gate (fdp->fd_pname != fdp->fd_nname)) { 6097c478bd9Sstevel@tonic-gate free((void *)fdp->fd_pname); 6107c478bd9Sstevel@tonic-gate fdp->fd_pname = 0; 6117c478bd9Sstevel@tonic-gate } 6127c478bd9Sstevel@tonic-gate } 6137c478bd9Sstevel@tonic-gate 6147c478bd9Sstevel@tonic-gate /* 6157c478bd9Sstevel@tonic-gate * Determine the object type of a file. 6167c478bd9Sstevel@tonic-gate */ 6177c478bd9Sstevel@tonic-gate Fct * 6187c478bd9Sstevel@tonic-gate are_u_this(Rej_desc *rej, int fd, struct stat *status, const char *name) 6197c478bd9Sstevel@tonic-gate { 6207c478bd9Sstevel@tonic-gate int i; 6217c478bd9Sstevel@tonic-gate char *maddr = 0; 6227c478bd9Sstevel@tonic-gate 6237c478bd9Sstevel@tonic-gate fmap->fm_fsize = status->st_size; 6247c478bd9Sstevel@tonic-gate 6257c478bd9Sstevel@tonic-gate /* 6267c478bd9Sstevel@tonic-gate * If this is a directory (which can't be mmap()'ed) generate a precise 6277c478bd9Sstevel@tonic-gate * error message. 6287c478bd9Sstevel@tonic-gate */ 6297c478bd9Sstevel@tonic-gate if ((status->st_mode & S_IFMT) == S_IFDIR) { 6307c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 6317c478bd9Sstevel@tonic-gate rej->rej_str = strerror(EISDIR); 6327c478bd9Sstevel@tonic-gate return (0); 6337c478bd9Sstevel@tonic-gate } 6347c478bd9Sstevel@tonic-gate 6357c478bd9Sstevel@tonic-gate /* 6367c478bd9Sstevel@tonic-gate * Map in the first page of the file. When this buffer is first used, 6377c478bd9Sstevel@tonic-gate * the mapping is a single system page. This is typically enough to 6387c478bd9Sstevel@tonic-gate * inspect the ehdr and phdrs of the file, and can be reused for each 6397c478bd9Sstevel@tonic-gate * file that get loaded. If a larger mapping is required to read the 6407c478bd9Sstevel@tonic-gate * ehdr and phdrs, a new mapping is created (see elf_map_it()). This 6417c478bd9Sstevel@tonic-gate * new mapping is again used for each new file loaded. Some objects, 6427c478bd9Sstevel@tonic-gate * such as filters, only take up one page, and in this case this mapping 6437c478bd9Sstevel@tonic-gate * will suffice for the file. 6447c478bd9Sstevel@tonic-gate */ 6457c478bd9Sstevel@tonic-gate maddr = mmap(fmap->fm_maddr, fmap->fm_msize, (PROT_READ | PROT_EXEC), 6467c478bd9Sstevel@tonic-gate fmap->fm_mflags, fd, 0); 6477c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 6487c478bd9Sstevel@tonic-gate if ((maddr == MAP_FAILED) && (errno == EINVAL)) { 6497c478bd9Sstevel@tonic-gate /* 6507c478bd9Sstevel@tonic-gate * If the mapping failed, and we used MAP_ALIGN, assume we're 6517c478bd9Sstevel@tonic-gate * on a system that doesn't support this option. Try again 6527c478bd9Sstevel@tonic-gate * without MAP_ALIGN. 6537c478bd9Sstevel@tonic-gate */ 6547c478bd9Sstevel@tonic-gate if (fmap->fm_mflags & MAP_ALIGN) { 6557c478bd9Sstevel@tonic-gate rtld_flags2 |= RT_FL2_NOMALIGN; 6567c478bd9Sstevel@tonic-gate fmap_setup(); 6577c478bd9Sstevel@tonic-gate 6587c478bd9Sstevel@tonic-gate maddr = (char *)mmap(fmap->fm_maddr, fmap->fm_msize, 6597c478bd9Sstevel@tonic-gate (PROT_READ | PROT_EXEC), fmap->fm_mflags, fd, 0); 6607c478bd9Sstevel@tonic-gate } 6617c478bd9Sstevel@tonic-gate } 6627c478bd9Sstevel@tonic-gate #endif 6637c478bd9Sstevel@tonic-gate if (maddr == MAP_FAILED) { 6647c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 6657c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 6667c478bd9Sstevel@tonic-gate return (0); 6677c478bd9Sstevel@tonic-gate } 6687c478bd9Sstevel@tonic-gate 6697c478bd9Sstevel@tonic-gate /* 6707c478bd9Sstevel@tonic-gate * From now on we will re-use fmap->fm_maddr as the mapping address 6717c478bd9Sstevel@tonic-gate * so we augment the flags with MAP_FIXED and drop any MAP_ALIGN. 6727c478bd9Sstevel@tonic-gate */ 6737c478bd9Sstevel@tonic-gate fmap->fm_maddr = maddr; 6747c478bd9Sstevel@tonic-gate fmap->fm_mflags |= MAP_FIXED; 6757c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 6767c478bd9Sstevel@tonic-gate fmap->fm_mflags &= ~MAP_ALIGN; 6777c478bd9Sstevel@tonic-gate #endif 6787c478bd9Sstevel@tonic-gate 6797c478bd9Sstevel@tonic-gate /* 6807c478bd9Sstevel@tonic-gate * Search through the object vectors to determine what kind of 6817c478bd9Sstevel@tonic-gate * object we have. 6827c478bd9Sstevel@tonic-gate */ 6837c478bd9Sstevel@tonic-gate for (i = 0; vector[i]; i++) { 6847c478bd9Sstevel@tonic-gate if ((vector[i]->fct_are_u_this)(rej)) 6857c478bd9Sstevel@tonic-gate return (vector[i]); 6867c478bd9Sstevel@tonic-gate else if (rej->rej_type) { 6877c478bd9Sstevel@tonic-gate Rt_map *lmp; 6887c478bd9Sstevel@tonic-gate 6897c478bd9Sstevel@tonic-gate /* 6907c478bd9Sstevel@tonic-gate * If this object is an explicitly defined shared 6917c478bd9Sstevel@tonic-gate * object under inspection by ldd, and contains a 6927c478bd9Sstevel@tonic-gate * incompatible hardware capabilities requirement, then 6937c478bd9Sstevel@tonic-gate * inform the user, but continue processing. 6947c478bd9Sstevel@tonic-gate * 6957c478bd9Sstevel@tonic-gate * XXXX - ldd -v for any rej failure. 6967c478bd9Sstevel@tonic-gate */ 6977c478bd9Sstevel@tonic-gate if ((rej->rej_type == SGS_REJ_HWCAP_1) && 6987c478bd9Sstevel@tonic-gate (lml_main.lm_flags & LML_FLG_TRC_LDDSTUB) && 6997c478bd9Sstevel@tonic-gate ((lmp = lml_main.lm_head) != 0) && 7007c478bd9Sstevel@tonic-gate (FLAGS1(lmp) & FL1_RT_LDDSTUB) && 7017c478bd9Sstevel@tonic-gate (NEXT(lmp) == 0)) { 7027c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_GEN_HWCAP_1), 7037c478bd9Sstevel@tonic-gate name, rej->rej_str); 7047c478bd9Sstevel@tonic-gate return (vector[i]); 7057c478bd9Sstevel@tonic-gate } 7067c478bd9Sstevel@tonic-gate return (0); 7077c478bd9Sstevel@tonic-gate } 7087c478bd9Sstevel@tonic-gate } 7097c478bd9Sstevel@tonic-gate 7107c478bd9Sstevel@tonic-gate /* 7117c478bd9Sstevel@tonic-gate * Unknown file type. 7127c478bd9Sstevel@tonic-gate */ 7137c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_UNKFILE; 7147c478bd9Sstevel@tonic-gate return (0); 7157c478bd9Sstevel@tonic-gate } 7167c478bd9Sstevel@tonic-gate 7177c478bd9Sstevel@tonic-gate 7187c478bd9Sstevel@tonic-gate /* 7197c478bd9Sstevel@tonic-gate * Function that determines whether a file name has already been loaded; if so, 7207c478bd9Sstevel@tonic-gate * returns a pointer to its link map structure; else returns a NULL pointer. 7217c478bd9Sstevel@tonic-gate */ 7227c478bd9Sstevel@tonic-gate static int 7237c478bd9Sstevel@tonic-gate _is_so_matched(const char *name, const char *str, int base) 7247c478bd9Sstevel@tonic-gate { 7257c478bd9Sstevel@tonic-gate const char *_str; 7267c478bd9Sstevel@tonic-gate 7277c478bd9Sstevel@tonic-gate if (base && ((_str = strrchr(str, '/')) != NULL)) 7287c478bd9Sstevel@tonic-gate _str++; 7297c478bd9Sstevel@tonic-gate else 7307c478bd9Sstevel@tonic-gate _str = str; 7317c478bd9Sstevel@tonic-gate 7327c478bd9Sstevel@tonic-gate return (strcmp(name, _str)); 7337c478bd9Sstevel@tonic-gate } 7347c478bd9Sstevel@tonic-gate 7357c478bd9Sstevel@tonic-gate static Rt_map * 7367c478bd9Sstevel@tonic-gate is_so_matched(Rt_map *lmp, const char *name, int base) 7377c478bd9Sstevel@tonic-gate { 7387c478bd9Sstevel@tonic-gate Aliste off; 7397c478bd9Sstevel@tonic-gate const char **cpp; 7407c478bd9Sstevel@tonic-gate 7417c478bd9Sstevel@tonic-gate /* 7427c478bd9Sstevel@tonic-gate * Typically, dependencies are specified as simple file names 7437c478bd9Sstevel@tonic-gate * (DT_NEEDED == libc.so.1), which are expanded to full pathnames to 7447c478bd9Sstevel@tonic-gate * open the file. The full pathname is NAME(), and the original name 7457c478bd9Sstevel@tonic-gate * is maintained on the ALIAS() list. Look through the ALIAS list first, 7467c478bd9Sstevel@tonic-gate * as this is most likely to match other dependency uses. 7477c478bd9Sstevel@tonic-gate */ 7487c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(ALIAS(lmp), off, cpp)) { 7497c478bd9Sstevel@tonic-gate if (_is_so_matched(name, *cpp, base) == 0) 7507c478bd9Sstevel@tonic-gate return (lmp); 7517c478bd9Sstevel@tonic-gate } 7527c478bd9Sstevel@tonic-gate 7537c478bd9Sstevel@tonic-gate /* 7547c478bd9Sstevel@tonic-gate * Finally compare full paths, this is sometimes useful for catching 7557c478bd9Sstevel@tonic-gate * filter names, or for those that dlopen() the dynamic executable. 7567c478bd9Sstevel@tonic-gate */ 7577c478bd9Sstevel@tonic-gate if (_is_so_matched(name, NAME(lmp), base) == 0) 7587c478bd9Sstevel@tonic-gate return (lmp); 7597c478bd9Sstevel@tonic-gate 7607c478bd9Sstevel@tonic-gate if (PATHNAME(lmp) != NAME(lmp)) { 7617c478bd9Sstevel@tonic-gate if (_is_so_matched(name, PATHNAME(lmp), base) == 0) 7627c478bd9Sstevel@tonic-gate return (lmp); 7637c478bd9Sstevel@tonic-gate } 7647c478bd9Sstevel@tonic-gate return (0); 7657c478bd9Sstevel@tonic-gate } 7667c478bd9Sstevel@tonic-gate 7677c478bd9Sstevel@tonic-gate Rt_map * 7687c478bd9Sstevel@tonic-gate is_so_loaded(Lm_list *lml, const char *name, int base) 7697c478bd9Sstevel@tonic-gate { 7707c478bd9Sstevel@tonic-gate Rt_map *lmp; 7717c478bd9Sstevel@tonic-gate const char *_name; 7727c478bd9Sstevel@tonic-gate avl_index_t where; 7737c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 7747c478bd9Sstevel@tonic-gate Aliste off; 7757c478bd9Sstevel@tonic-gate 7767c478bd9Sstevel@tonic-gate /* 7777c478bd9Sstevel@tonic-gate * If we've been asked to do a basename search, first determine if 7787c478bd9Sstevel@tonic-gate * the pathname is registered in the FullpathNode AVL tree. 7797c478bd9Sstevel@tonic-gate */ 7807c478bd9Sstevel@tonic-gate if (base && (name[0] == '/') && 7817c478bd9Sstevel@tonic-gate ((lmp = fpavl_loaded(lml, name, &where)) != NULL) && 7827c478bd9Sstevel@tonic-gate ((FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) == 0)) 7837c478bd9Sstevel@tonic-gate return (lmp); 7847c478bd9Sstevel@tonic-gate 7857c478bd9Sstevel@tonic-gate /* 7867c478bd9Sstevel@tonic-gate * If we've been asked to do a basename search reduce the input name 7877c478bd9Sstevel@tonic-gate * to its basename. 7887c478bd9Sstevel@tonic-gate */ 7897c478bd9Sstevel@tonic-gate if (base && ((_name = strrchr(name, '/')) != NULL)) 7907c478bd9Sstevel@tonic-gate _name++; 7917c478bd9Sstevel@tonic-gate else 7927c478bd9Sstevel@tonic-gate _name = name; 7937c478bd9Sstevel@tonic-gate 7947c478bd9Sstevel@tonic-gate /* 7957c478bd9Sstevel@tonic-gate * Loop through the callers link-map lists. 7967c478bd9Sstevel@tonic-gate */ 7977c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(lml->lm_lists, off, lmc)) { 7987c478bd9Sstevel@tonic-gate for (lmp = lmc->lc_head; lmp; lmp = (Rt_map *)NEXT(lmp)) { 7997c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) 8007c478bd9Sstevel@tonic-gate continue; 8017c478bd9Sstevel@tonic-gate 8027c478bd9Sstevel@tonic-gate if (is_so_matched(lmp, _name, base)) 8037c478bd9Sstevel@tonic-gate return (lmp); 8047c478bd9Sstevel@tonic-gate } 8057c478bd9Sstevel@tonic-gate } 8067c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 8077c478bd9Sstevel@tonic-gate } 8087c478bd9Sstevel@tonic-gate 8097c478bd9Sstevel@tonic-gate 8107c478bd9Sstevel@tonic-gate /* 8117c478bd9Sstevel@tonic-gate * Tracing is enabled by the LD_TRACE_LOADED_OPTIONS environment variable which 8127c478bd9Sstevel@tonic-gate * is normally set from ldd(1). For each link map we load, print the load name 8137c478bd9Sstevel@tonic-gate * and the full pathname of the shared object. 8147c478bd9Sstevel@tonic-gate */ 8157c478bd9Sstevel@tonic-gate /* ARGSUSED4 */ 8167c478bd9Sstevel@tonic-gate static void 8177c478bd9Sstevel@tonic-gate trace_so(Rt_map *clmp, Rej_desc *rej, const char *name, const char *path, 8187c478bd9Sstevel@tonic-gate int alter, const char *nfound) 8197c478bd9Sstevel@tonic-gate { 8207c478bd9Sstevel@tonic-gate const char *str = MSG_ORIG(MSG_STR_EMPTY); 8217c478bd9Sstevel@tonic-gate const char *reject = MSG_ORIG(MSG_STR_EMPTY); 8227c478bd9Sstevel@tonic-gate char _reject[PATH_MAX]; 8237c478bd9Sstevel@tonic-gate 8247c478bd9Sstevel@tonic-gate /* 8257c478bd9Sstevel@tonic-gate * The first time through trace_so() will only have lddstub on the 8267c478bd9Sstevel@tonic-gate * link-map list and the preloaded shared object is supplied as "path". 8277c478bd9Sstevel@tonic-gate * As we don't want to print this shared object as a dependency, but 8287c478bd9Sstevel@tonic-gate * instead inspect *its* dependencies, return. 8297c478bd9Sstevel@tonic-gate */ 8307c478bd9Sstevel@tonic-gate if (FLAGS1(clmp) & FL1_RT_LDDSTUB) 8317c478bd9Sstevel@tonic-gate return; 8327c478bd9Sstevel@tonic-gate 8337c478bd9Sstevel@tonic-gate /* 8347c478bd9Sstevel@tonic-gate * Without any rejection info, this is a supplied not-found condition. 8357c478bd9Sstevel@tonic-gate */ 8367c478bd9Sstevel@tonic-gate if (rej && (rej->rej_type == 0)) { 8377c478bd9Sstevel@tonic-gate (void) printf(nfound, name); 8387c478bd9Sstevel@tonic-gate return; 8397c478bd9Sstevel@tonic-gate } 8407c478bd9Sstevel@tonic-gate 8417c478bd9Sstevel@tonic-gate /* 8427c478bd9Sstevel@tonic-gate * If rejection information exists then establish what object was 8437c478bd9Sstevel@tonic-gate * found and the reason for its rejection. 8447c478bd9Sstevel@tonic-gate */ 8457c478bd9Sstevel@tonic-gate if (rej) { 8467c478bd9Sstevel@tonic-gate /* LINTED */ 8477c478bd9Sstevel@tonic-gate (void) snprintf(_reject, PATH_MAX, 8487c478bd9Sstevel@tonic-gate MSG_INTL(ldd_reject[rej->rej_type]), conv_reject_str(rej)); 8497c478bd9Sstevel@tonic-gate if (rej->rej_name) 8507c478bd9Sstevel@tonic-gate path = rej->rej_name; 8517c478bd9Sstevel@tonic-gate reject = (char *)_reject; 8527c478bd9Sstevel@tonic-gate 8537c478bd9Sstevel@tonic-gate /* 8547c478bd9Sstevel@tonic-gate * Was an alternative pathname defined (from a configuration 8557c478bd9Sstevel@tonic-gate * file). 8567c478bd9Sstevel@tonic-gate */ 8577c478bd9Sstevel@tonic-gate if (rej->rej_flag & FLG_FD_ALTER) 8587c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 8597c478bd9Sstevel@tonic-gate } else { 8607c478bd9Sstevel@tonic-gate if (alter) 8617c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 8627c478bd9Sstevel@tonic-gate } 8637c478bd9Sstevel@tonic-gate 8647c478bd9Sstevel@tonic-gate /* 8657c478bd9Sstevel@tonic-gate * If the load name isn't a full pathname print its associated pathname 8667c478bd9Sstevel@tonic-gate * together with all the other information we've gathered. 8677c478bd9Sstevel@tonic-gate */ 8687c478bd9Sstevel@tonic-gate if (*name == '/') 8697c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), path, str, reject); 8707c478bd9Sstevel@tonic-gate else 8717c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), name, path, str, reject); 8727c478bd9Sstevel@tonic-gate } 8737c478bd9Sstevel@tonic-gate 8747c478bd9Sstevel@tonic-gate 8757c478bd9Sstevel@tonic-gate /* 8767c478bd9Sstevel@tonic-gate * Establish a link-map mode, initializing it if it has just been loaded, or 8777c478bd9Sstevel@tonic-gate * potentially updating it if it already exists. 8787c478bd9Sstevel@tonic-gate */ 8797c478bd9Sstevel@tonic-gate int 8807c478bd9Sstevel@tonic-gate update_mode(Rt_map *lmp, int omode, int nmode) 8817c478bd9Sstevel@tonic-gate { 882*dffec89cSrie Lm_list *lml = LIST(lmp); 8837c478bd9Sstevel@tonic-gate int pmode = 0; 8847c478bd9Sstevel@tonic-gate 8857c478bd9Sstevel@tonic-gate /* 8867c478bd9Sstevel@tonic-gate * A newly loaded object hasn't had its mode set yet. Modes are used to 8877c478bd9Sstevel@tonic-gate * load dependencies, so don't propagate any parent or no-load flags, as 8887c478bd9Sstevel@tonic-gate * these would adversely affect this objects ability to load any of its 8897c478bd9Sstevel@tonic-gate * dependencies that aren't already loaded. RTLD_FIRST is applicable to 8907c478bd9Sstevel@tonic-gate * this objects handle creation only, and should not be propagated. 8917c478bd9Sstevel@tonic-gate */ 8927c478bd9Sstevel@tonic-gate if ((FLAGS(lmp) & FLG_RT_MODESET) == 0) { 8937c478bd9Sstevel@tonic-gate MODE(lmp) |= nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST); 8947c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_MODESET; 8957c478bd9Sstevel@tonic-gate return (1); 8967c478bd9Sstevel@tonic-gate } 8977c478bd9Sstevel@tonic-gate 8987c478bd9Sstevel@tonic-gate /* 8997c478bd9Sstevel@tonic-gate * Establish any new overriding modes. RTLD_LAZY and RTLD_NOW should be 9007c478bd9Sstevel@tonic-gate * represented individually (this is historic, as these two flags were 9017c478bd9Sstevel@tonic-gate * the only flags originally available to dlopen()). Other flags are 9027c478bd9Sstevel@tonic-gate * accumulative, but have a hierarchy of preference. 9037c478bd9Sstevel@tonic-gate */ 9047c478bd9Sstevel@tonic-gate if ((omode & RTLD_LAZY) && (nmode & RTLD_NOW)) { 9057c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_LAZY; 9067c478bd9Sstevel@tonic-gate pmode |= RTLD_NOW; 9077c478bd9Sstevel@tonic-gate } 9087c478bd9Sstevel@tonic-gate 9097c478bd9Sstevel@tonic-gate pmode |= ((~omode & nmode) & 9107c478bd9Sstevel@tonic-gate (RTLD_GLOBAL | RTLD_WORLD | RTLD_NODELETE)); 9117c478bd9Sstevel@tonic-gate if (pmode) { 9127c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_mode_promote(NAME(lmp), pmode)); 9137c478bd9Sstevel@tonic-gate MODE(lmp) |= pmode; 9147c478bd9Sstevel@tonic-gate } 9157c478bd9Sstevel@tonic-gate 9167c478bd9Sstevel@tonic-gate /* 9177c478bd9Sstevel@tonic-gate * If this load is an RTLD_NOW request and the object has already been 9187c478bd9Sstevel@tonic-gate * loaded non-RTLD_NOW, append this object to the relocation-now list 9197c478bd9Sstevel@tonic-gate * of the objects associated control list. Note, if the object hasn't 9207c478bd9Sstevel@tonic-gate * yet been relocated, setting its MODE() to RTLD_NOW will establish 9217c478bd9Sstevel@tonic-gate * full relocation processing when it eventually gets relocated. 9227c478bd9Sstevel@tonic-gate */ 9237c478bd9Sstevel@tonic-gate if ((pmode & RTLD_NOW) && 9247c478bd9Sstevel@tonic-gate (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))) { 9257c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 9267c478bd9Sstevel@tonic-gate 9277c478bd9Sstevel@tonic-gate /* LINTED */ 9287c478bd9Sstevel@tonic-gate lmc = (Lm_cntl *)((char *)(LIST(lmp)->lm_lists) + CNTL(lmp)); 9297c478bd9Sstevel@tonic-gate (void) alist_append(&(lmc->lc_now), &lmp, sizeof (Rt_map *), 9307c478bd9Sstevel@tonic-gate AL_CNT_LMNOW); 9317c478bd9Sstevel@tonic-gate } 9327c478bd9Sstevel@tonic-gate 9337c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 9347c478bd9Sstevel@tonic-gate /* 9357c478bd9Sstevel@tonic-gate * For patch backward compatibility the following .init collection 9367c478bd9Sstevel@tonic-gate * is disabled. 9377c478bd9Sstevel@tonic-gate */ 9387c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 9397c478bd9Sstevel@tonic-gate return (pmode); 9407c478bd9Sstevel@tonic-gate #endif 9417c478bd9Sstevel@tonic-gate 9427c478bd9Sstevel@tonic-gate /* 943*dffec89cSrie * If this objects .init has been collected but has not yet been called, 944*dffec89cSrie * it may be necessary to reevaluate the object using tsort(). For 9457c478bd9Sstevel@tonic-gate * example, a new dlopen() hierarchy may bind to uninitialized objects 9467c478bd9Sstevel@tonic-gate * that are already loaded, or a dlopen(RTLD_NOW) can establish new 9477c478bd9Sstevel@tonic-gate * bindings between already loaded objects that require the tsort() 948*dffec89cSrie * information be recomputed. If however, no new objects have been 949*dffec89cSrie * added to the process, and this object hasn't been promoted, don't 950*dffec89cSrie * bother reevaluating the .init. The present tsort() information is 951*dffec89cSrie * probably as accurate as necessary, and by not establishing a parallel 952*dffec89cSrie * tsort() we can help reduce the amount of recursion possible between 953*dffec89cSrie * .inits. 9547c478bd9Sstevel@tonic-gate */ 955*dffec89cSrie if (((FLAGS(lmp) & 956*dffec89cSrie (FLG_RT_INITCLCT | FLG_RT_INITCALL)) == FLG_RT_INITCLCT) && 957*dffec89cSrie ((lml->lm_flags & LML_FLG_OBJADDED) || ((pmode & RTLD_NOW) && 958*dffec89cSrie (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))))) { 9597c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_INITCLCT; 9607c478bd9Sstevel@tonic-gate LIST(lmp)->lm_init++; 961*dffec89cSrie LIST(lmp)->lm_flags |= LML_FLG_OBJREEVAL; 9627c478bd9Sstevel@tonic-gate } 9637c478bd9Sstevel@tonic-gate 9647c478bd9Sstevel@tonic-gate return (pmode); 9657c478bd9Sstevel@tonic-gate } 9667c478bd9Sstevel@tonic-gate 9677c478bd9Sstevel@tonic-gate /* 9687c478bd9Sstevel@tonic-gate * Determine whether an alias name already exists, and if not create one. This 9697c478bd9Sstevel@tonic-gate * is typically used to retain dependency names, such as "libc.so.1", which 9707c478bd9Sstevel@tonic-gate * would have been expanded to full path names when they were loaded. The 9717c478bd9Sstevel@tonic-gate * full path names (NAME() and possibly PATHNAME()) are maintained as Fullpath 9727c478bd9Sstevel@tonic-gate * AVL nodes, and thus would have been matched by fpavl_loaded() during 9737c478bd9Sstevel@tonic-gate * file_open(). 9747c478bd9Sstevel@tonic-gate */ 9757c478bd9Sstevel@tonic-gate int 9767c478bd9Sstevel@tonic-gate append_alias(Rt_map *lmp, const char *str, int *added) 9777c478bd9Sstevel@tonic-gate { 9787c478bd9Sstevel@tonic-gate Aliste off; 9797c478bd9Sstevel@tonic-gate char **cpp, *cp; 9807c478bd9Sstevel@tonic-gate 9817c478bd9Sstevel@tonic-gate /* 9827c478bd9Sstevel@tonic-gate * Determine if this filename is already on the alias list. 9837c478bd9Sstevel@tonic-gate */ 9847c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(ALIAS(lmp), off, cpp)) { 9857c478bd9Sstevel@tonic-gate if (strcmp(*cpp, str) == 0) 9867c478bd9Sstevel@tonic-gate return (1); 9877c478bd9Sstevel@tonic-gate } 9887c478bd9Sstevel@tonic-gate 9897c478bd9Sstevel@tonic-gate /* 9907c478bd9Sstevel@tonic-gate * This is a new alias, append it to the alias list. 9917c478bd9Sstevel@tonic-gate */ 9927c478bd9Sstevel@tonic-gate if ((cp = strdup(str)) == 0) 9937c478bd9Sstevel@tonic-gate return (0); 9947c478bd9Sstevel@tonic-gate 9957c478bd9Sstevel@tonic-gate if (alist_append(&ALIAS(lmp), &cp, sizeof (char *), 9967c478bd9Sstevel@tonic-gate AL_CNT_ALIAS) == 0) { 9977c478bd9Sstevel@tonic-gate free(cp); 9987c478bd9Sstevel@tonic-gate return (0); 9997c478bd9Sstevel@tonic-gate } 10007c478bd9Sstevel@tonic-gate if (added) 10017c478bd9Sstevel@tonic-gate *added = 1; 10027c478bd9Sstevel@tonic-gate return (1); 10037c478bd9Sstevel@tonic-gate } 10047c478bd9Sstevel@tonic-gate 10057c478bd9Sstevel@tonic-gate /* 10067c478bd9Sstevel@tonic-gate * Determine whether a file is already loaded by comparing device and inode 10077c478bd9Sstevel@tonic-gate * values. 10087c478bd9Sstevel@tonic-gate */ 10097c478bd9Sstevel@tonic-gate static Rt_map * 10107c478bd9Sstevel@tonic-gate is_devinode_loaded(struct stat *status, Lm_list *lml, const char *name, 10117c478bd9Sstevel@tonic-gate uint_t flags) 10127c478bd9Sstevel@tonic-gate { 10137c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 10147c478bd9Sstevel@tonic-gate Aliste off; 10157c478bd9Sstevel@tonic-gate 10167c478bd9Sstevel@tonic-gate /* 10177c478bd9Sstevel@tonic-gate * If this is an auditor, it will have been opened on a new link-map. 10187c478bd9Sstevel@tonic-gate * To prevent multiple occurrances of the same auditor on multiple 10197c478bd9Sstevel@tonic-gate * link-maps, search the head of each link-map list and see if this 10207c478bd9Sstevel@tonic-gate * object is already loaded as an auditor. 10217c478bd9Sstevel@tonic-gate */ 10227c478bd9Sstevel@tonic-gate if (flags & FLG_RT_AUDIT) { 10237c478bd9Sstevel@tonic-gate Lm_list * lml; 10247c478bd9Sstevel@tonic-gate Listnode * lnp; 10257c478bd9Sstevel@tonic-gate 10267c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(&dynlm_list, lnp, lml)) { 10277c478bd9Sstevel@tonic-gate Rt_map *nlmp = lml->lm_head; 10287c478bd9Sstevel@tonic-gate 10297c478bd9Sstevel@tonic-gate if (nlmp && ((FLAGS(nlmp) & 10307c478bd9Sstevel@tonic-gate (FLG_RT_AUDIT | FLG_RT_DELETE)) == FLG_RT_AUDIT) && 10317c478bd9Sstevel@tonic-gate (STDEV(nlmp) == status->st_dev) && 10327c478bd9Sstevel@tonic-gate (STINO(nlmp) == status->st_ino)) 10337c478bd9Sstevel@tonic-gate return (nlmp); 10347c478bd9Sstevel@tonic-gate } 10357c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 10367c478bd9Sstevel@tonic-gate } 10377c478bd9Sstevel@tonic-gate 10387c478bd9Sstevel@tonic-gate /* 10397c478bd9Sstevel@tonic-gate * If the file has been found determine from the new files status 10407c478bd9Sstevel@tonic-gate * information if this file is actually linked to one we already have 10417c478bd9Sstevel@tonic-gate * mapped. This catches symlink names not caught by is_so_loaded(). 10427c478bd9Sstevel@tonic-gate */ 10437c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(lml->lm_lists, off, lmc)) { 10447c478bd9Sstevel@tonic-gate Rt_map *nlmp; 10457c478bd9Sstevel@tonic-gate 10467c478bd9Sstevel@tonic-gate for (nlmp = lmc->lc_head; nlmp; nlmp = (Rt_map *)NEXT(nlmp)) { 10477c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_DELETE) || 10487c478bd9Sstevel@tonic-gate (FLAGS1(nlmp) & FL1_RT_LDDSTUB)) 10497c478bd9Sstevel@tonic-gate continue; 10507c478bd9Sstevel@tonic-gate 10517c478bd9Sstevel@tonic-gate if ((STDEV(nlmp) != status->st_dev) || 10527c478bd9Sstevel@tonic-gate (STINO(nlmp) != status->st_ino)) 10537c478bd9Sstevel@tonic-gate continue; 10547c478bd9Sstevel@tonic-gate 10557c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_VERBOSE) { 10567c478bd9Sstevel@tonic-gate if (*name == '/') 10577c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 10587c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 10597c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 10607c478bd9Sstevel@tonic-gate else 10617c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 10627c478bd9Sstevel@tonic-gate name, NAME(nlmp), 10637c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 10647c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 10657c478bd9Sstevel@tonic-gate } 10667c478bd9Sstevel@tonic-gate return (nlmp); 10677c478bd9Sstevel@tonic-gate } 10687c478bd9Sstevel@tonic-gate } 10697c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 10707c478bd9Sstevel@tonic-gate } 10717c478bd9Sstevel@tonic-gate 10727c478bd9Sstevel@tonic-gate /* 10737c478bd9Sstevel@tonic-gate * Generate any error messages indicating a file could not be found. When 10747c478bd9Sstevel@tonic-gate * preloading or auditing a secure application, it can be a little more helpful 10757c478bd9Sstevel@tonic-gate * to indicate that a search of secure directories has failed, so adjust the 10767c478bd9Sstevel@tonic-gate * messages accordingly. 10777c478bd9Sstevel@tonic-gate */ 10787c478bd9Sstevel@tonic-gate void 10797c478bd9Sstevel@tonic-gate file_notfound(Lm_list *lml, const char *name, Rt_map *clmp, uint_t flags, 10807c478bd9Sstevel@tonic-gate Rej_desc * rej) 10817c478bd9Sstevel@tonic-gate { 10827c478bd9Sstevel@tonic-gate int secure = 0; 10837c478bd9Sstevel@tonic-gate 10847c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SECURE) && 10857c478bd9Sstevel@tonic-gate (flags & (FLG_RT_PRELOAD | FLG_RT_AUDIT))) 10867c478bd9Sstevel@tonic-gate secure++; 10877c478bd9Sstevel@tonic-gate 10887c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 10897c478bd9Sstevel@tonic-gate /* 10907c478bd9Sstevel@tonic-gate * Under ldd(1), auxiliary filtees that can't be loaded are 10917c478bd9Sstevel@tonic-gate * ignored, unless verbose errors are requested. 10927c478bd9Sstevel@tonic-gate */ 10937c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SILENCERR) && 10947c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_TRC_VERBOSE) == 0)) 10957c478bd9Sstevel@tonic-gate return; 10967c478bd9Sstevel@tonic-gate 10977c478bd9Sstevel@tonic-gate if (secure) 10987c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 10997c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_SEC_NFOUND)); 11007c478bd9Sstevel@tonic-gate else 11017c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 11027c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_NFOUND)); 11037c478bd9Sstevel@tonic-gate return; 11047c478bd9Sstevel@tonic-gate } 11057c478bd9Sstevel@tonic-gate 11067c478bd9Sstevel@tonic-gate if (rej->rej_type) { 11077c478bd9Sstevel@tonic-gate eprintf(ERR_FATAL, MSG_INTL(err_reject[rej->rej_type]), 11087c478bd9Sstevel@tonic-gate rej->rej_name ? rej->rej_name : MSG_INTL(MSG_STR_UNKNOWN), 11097c478bd9Sstevel@tonic-gate conv_reject_str(rej)); 11107c478bd9Sstevel@tonic-gate return; 11117c478bd9Sstevel@tonic-gate } 11127c478bd9Sstevel@tonic-gate 11137c478bd9Sstevel@tonic-gate if (secure) 11147c478bd9Sstevel@tonic-gate eprintf(ERR_FATAL, MSG_INTL(MSG_SEC_OPEN), name); 11157c478bd9Sstevel@tonic-gate else 11167c478bd9Sstevel@tonic-gate eprintf(ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), name, 11177c478bd9Sstevel@tonic-gate strerror(ENOENT)); 11187c478bd9Sstevel@tonic-gate } 11197c478bd9Sstevel@tonic-gate 11207c478bd9Sstevel@tonic-gate static int 11217c478bd9Sstevel@tonic-gate file_open(int err, Lm_list *lml, const char *oname, const char *nname, 11227c478bd9Sstevel@tonic-gate Rt_map *clmp, uint_t flags, Fdesc * fdesc, Rej_desc *rej) 11237c478bd9Sstevel@tonic-gate { 11247c478bd9Sstevel@tonic-gate struct stat status; 11257c478bd9Sstevel@tonic-gate Rt_map *nlmp; 11267c478bd9Sstevel@tonic-gate 11277c478bd9Sstevel@tonic-gate fdesc->fd_oname = oname; 11287c478bd9Sstevel@tonic-gate 11297c478bd9Sstevel@tonic-gate if ((err == 0) && (fdesc->fd_flags & FLG_FD_ALTER)) 11307c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_config_obj(oname, 0, nname)); 11317c478bd9Sstevel@tonic-gate 11327c478bd9Sstevel@tonic-gate /* 11337c478bd9Sstevel@tonic-gate * If we're dealing with a full pathname, determine whether this 11347c478bd9Sstevel@tonic-gate * pathname is already known. Other pathnames fall through to the 11357c478bd9Sstevel@tonic-gate * dev/inode check, as even though the pathname may look the same as 11367c478bd9Sstevel@tonic-gate * one previously used, the process may have changed directory. 11377c478bd9Sstevel@tonic-gate */ 11387c478bd9Sstevel@tonic-gate if ((err == 0) && (nname[0] == '/')) { 11397c478bd9Sstevel@tonic-gate if ((nlmp = fpavl_loaded(lml, nname, 11407c478bd9Sstevel@tonic-gate &(fdesc->fd_avlwhere))) != NULL) { 11417c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 11427c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 11437c478bd9Sstevel@tonic-gate return (1); 11447c478bd9Sstevel@tonic-gate } 11457c478bd9Sstevel@tonic-gate } 11467c478bd9Sstevel@tonic-gate 11477c478bd9Sstevel@tonic-gate if ((err == 0) && ((stat(nname, &status)) != -1)) { 11487c478bd9Sstevel@tonic-gate char path[PATH_MAX]; 11497c478bd9Sstevel@tonic-gate int fd, size, added; 11507c478bd9Sstevel@tonic-gate 11517c478bd9Sstevel@tonic-gate /* 11527c478bd9Sstevel@tonic-gate * If this path has been constructed as part of expanding a 11537c478bd9Sstevel@tonic-gate * HWCAP directory, ignore any subdirectories. For any other 11547c478bd9Sstevel@tonic-gate * reference that expands to a directory, fall through to 11557c478bd9Sstevel@tonic-gate * contruct a meaningful rejection message. 11567c478bd9Sstevel@tonic-gate */ 11577c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) && 11587c478bd9Sstevel@tonic-gate ((status.st_mode & S_IFMT) == S_IFDIR)) 11597c478bd9Sstevel@tonic-gate return (0); 11607c478bd9Sstevel@tonic-gate 11617c478bd9Sstevel@tonic-gate /* 11627c478bd9Sstevel@tonic-gate * Resolve the filename and determine whether the resolved name 11637c478bd9Sstevel@tonic-gate * is already known. Typically, the previous fpavl_loaded() 11647c478bd9Sstevel@tonic-gate * will have caught this, as both NAME() and PATHNAME() for a 11657c478bd9Sstevel@tonic-gate * link-map are recorded in the FullNode AVL tree. However, 11667c478bd9Sstevel@tonic-gate * instances exist where a file can be replaced (loop-back 11677c478bd9Sstevel@tonic-gate * mounts, bfu, etc.), and reference is made to the original 11687c478bd9Sstevel@tonic-gate * file through a symbolic link. By checking the pathname here, 11697c478bd9Sstevel@tonic-gate * we don't fall through to the dev/inode check and conclude 11707c478bd9Sstevel@tonic-gate * that a new file should be loaded. 11717c478bd9Sstevel@tonic-gate */ 11727c478bd9Sstevel@tonic-gate if ((nname[0] == '/') && (rtld_flags & RT_FL_EXECNAME) && 11737c478bd9Sstevel@tonic-gate ((size = resolvepath(nname, path, (PATH_MAX - 1))) > 0)) { 11747c478bd9Sstevel@tonic-gate path[size] = '\0'; 11757c478bd9Sstevel@tonic-gate 11767c478bd9Sstevel@tonic-gate if (strcmp(nname, path)) { 11777c478bd9Sstevel@tonic-gate if ((nlmp = fpavl_loaded(lml, path, 11787c478bd9Sstevel@tonic-gate &(fdesc->fd_avlwhere))) != NULL) { 11797c478bd9Sstevel@tonic-gate added = 0; 11807c478bd9Sstevel@tonic-gate 11817c478bd9Sstevel@tonic-gate if (append_alias(nlmp, nname, 11827c478bd9Sstevel@tonic-gate &added) == 0) 11837c478bd9Sstevel@tonic-gate return (0); 11847c478bd9Sstevel@tonic-gate if (added) 11857c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_skip(nname, 11867c478bd9Sstevel@tonic-gate NAME(nlmp))); 11877c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 11887c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 11897c478bd9Sstevel@tonic-gate return (1); 11907c478bd9Sstevel@tonic-gate } 11917c478bd9Sstevel@tonic-gate 11927c478bd9Sstevel@tonic-gate /* 11937c478bd9Sstevel@tonic-gate * If this pathname hasn't been loaded, save 11947c478bd9Sstevel@tonic-gate * the resolved pathname so that it doesn't 11957c478bd9Sstevel@tonic-gate * have to be recomputed as part of fullpath() 11967c478bd9Sstevel@tonic-gate * processing. 11977c478bd9Sstevel@tonic-gate */ 11987c478bd9Sstevel@tonic-gate if ((fdesc->fd_pname = strdup(path)) == 0) 11997c478bd9Sstevel@tonic-gate return (0); 12007c478bd9Sstevel@tonic-gate } else { 12017c478bd9Sstevel@tonic-gate /* 12027c478bd9Sstevel@tonic-gate * If the resolved name doesn't differ from the 12037c478bd9Sstevel@tonic-gate * original, save it without duplication. 12047c478bd9Sstevel@tonic-gate * Having fd_pname set indicates that no further 12057c478bd9Sstevel@tonic-gate * resolvepath processing is necessary. 12067c478bd9Sstevel@tonic-gate */ 12077c478bd9Sstevel@tonic-gate fdesc->fd_pname = nname; 12087c478bd9Sstevel@tonic-gate } 12097c478bd9Sstevel@tonic-gate } 12107c478bd9Sstevel@tonic-gate 12117c478bd9Sstevel@tonic-gate if (nlmp = is_devinode_loaded(&status, lml, nname, flags)) { 12127c478bd9Sstevel@tonic-gate added = 0; 12137c478bd9Sstevel@tonic-gate 12147c478bd9Sstevel@tonic-gate if (append_alias(nlmp, nname, &added) == 0) 12157c478bd9Sstevel@tonic-gate return (0); 12167c478bd9Sstevel@tonic-gate if (added) { 12177c478bd9Sstevel@tonic-gate if ((nname[0] == '/') && (fpavl_insert(lml, 12187c478bd9Sstevel@tonic-gate nlmp, nname, 0) == 0)) 12197c478bd9Sstevel@tonic-gate return (0); 12207c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_skip(nname, NAME(nlmp))); 12217c478bd9Sstevel@tonic-gate } 12227c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 12237c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 12247c478bd9Sstevel@tonic-gate return (1); 12257c478bd9Sstevel@tonic-gate } 12267c478bd9Sstevel@tonic-gate 12277c478bd9Sstevel@tonic-gate if ((fd = open(nname, O_RDONLY, 0)) == -1) { 12287c478bd9Sstevel@tonic-gate /* 12297c478bd9Sstevel@tonic-gate * As the file must exist for the previous stat() to 12307c478bd9Sstevel@tonic-gate * have succeeded, record the error condition. 12317c478bd9Sstevel@tonic-gate */ 12327c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 12337c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 12347c478bd9Sstevel@tonic-gate } else { 12357c478bd9Sstevel@tonic-gate Fct *ftp; 12367c478bd9Sstevel@tonic-gate 12377c478bd9Sstevel@tonic-gate if ((ftp = are_u_this(rej, fd, &status, nname)) != 0) { 12387c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 12397c478bd9Sstevel@tonic-gate fdesc->fd_ftp = ftp; 12407c478bd9Sstevel@tonic-gate fdesc->fd_dev = status.st_dev; 12417c478bd9Sstevel@tonic-gate fdesc->fd_ino = status.st_ino; 12427c478bd9Sstevel@tonic-gate fdesc->fd_fd = fd; 12437c478bd9Sstevel@tonic-gate 12447c478bd9Sstevel@tonic-gate /* 12457c478bd9Sstevel@tonic-gate * Trace that this open has succeeded. 12467c478bd9Sstevel@tonic-gate */ 12477c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 12487c478bd9Sstevel@tonic-gate trace_so(clmp, 0, oname, nname, 12497c478bd9Sstevel@tonic-gate (fdesc->fd_flags & FLG_FD_ALTER), 0); 12507c478bd9Sstevel@tonic-gate } 12517c478bd9Sstevel@tonic-gate return (1); 12527c478bd9Sstevel@tonic-gate } 12537c478bd9Sstevel@tonic-gate (void) close(fd); 12547c478bd9Sstevel@tonic-gate } 12557c478bd9Sstevel@tonic-gate 12567c478bd9Sstevel@tonic-gate } else if (errno != ENOENT) { 12577c478bd9Sstevel@tonic-gate /* 12587c478bd9Sstevel@tonic-gate * If the open() failed for anything other than the file not 12597c478bd9Sstevel@tonic-gate * existing, record the error condition. 12607c478bd9Sstevel@tonic-gate */ 12617c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 12627c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 12637c478bd9Sstevel@tonic-gate } 12647c478bd9Sstevel@tonic-gate 12657c478bd9Sstevel@tonic-gate /* 12667c478bd9Sstevel@tonic-gate * Indicate any rejection. 12677c478bd9Sstevel@tonic-gate */ 12687c478bd9Sstevel@tonic-gate if (rej->rej_type) { 12697c478bd9Sstevel@tonic-gate rej->rej_name = nname; 12707c478bd9Sstevel@tonic-gate rej->rej_flag = (fdesc->fd_flags & FLG_FD_ALTER); 12717c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_rejected(rej)); 12727c478bd9Sstevel@tonic-gate } 12737c478bd9Sstevel@tonic-gate return (0); 12747c478bd9Sstevel@tonic-gate } 12757c478bd9Sstevel@tonic-gate 12767c478bd9Sstevel@tonic-gate /* 12777c478bd9Sstevel@tonic-gate * Find a full pathname (it contains a "/"). 12787c478bd9Sstevel@tonic-gate */ 12797c478bd9Sstevel@tonic-gate int 12807c478bd9Sstevel@tonic-gate find_path(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 12817c478bd9Sstevel@tonic-gate Fdesc * fdesc, Rej_desc *rej) 12827c478bd9Sstevel@tonic-gate { 12837c478bd9Sstevel@tonic-gate int err = 0; 12847c478bd9Sstevel@tonic-gate 12857c478bd9Sstevel@tonic-gate /* 12867c478bd9Sstevel@tonic-gate * If directory configuration exists determine if this path is known. 12877c478bd9Sstevel@tonic-gate */ 12887c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DIRCFG) { 12897c478bd9Sstevel@tonic-gate Rtc_obj *obj; 12907c478bd9Sstevel@tonic-gate const char *aname; 12917c478bd9Sstevel@tonic-gate 12927c478bd9Sstevel@tonic-gate if ((obj = elf_config_ent(oname, (Word)elf_hash(oname), 12937c478bd9Sstevel@tonic-gate 0, &aname)) != 0) { 12947c478bd9Sstevel@tonic-gate /* 12957c478bd9Sstevel@tonic-gate * If the configuration file states that this path is a 12967c478bd9Sstevel@tonic-gate * directory, or the path is explicitly defined as 12977c478bd9Sstevel@tonic-gate * non-existent (ie. a unused platform specific 12987c478bd9Sstevel@tonic-gate * library), then go no further. 12997c478bd9Sstevel@tonic-gate */ 13007c478bd9Sstevel@tonic-gate if (obj->co_flags & RTC_OBJ_DIRENT) { 13017c478bd9Sstevel@tonic-gate err = EISDIR; 13027c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & 13037c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == 13047c478bd9Sstevel@tonic-gate RTC_OBJ_NOEXIST) { 13057c478bd9Sstevel@tonic-gate err = ENOENT; 13067c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & RTC_OBJ_ALTER) && 13077c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && (lml == &lml_main)) { 13087c478bd9Sstevel@tonic-gate int ret; 13097c478bd9Sstevel@tonic-gate 13107c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 13117c478bd9Sstevel@tonic-gate /* 13127c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. If 13137c478bd9Sstevel@tonic-gate * this fails, and the alternative is flagged 13147c478bd9Sstevel@tonic-gate * as optional, fall through to open the 13157c478bd9Sstevel@tonic-gate * original path. 13167c478bd9Sstevel@tonic-gate */ 13177c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_libs_found(aname, FLG_FD_ALTER)); 13187c478bd9Sstevel@tonic-gate if (((ret = file_open(0, lml, oname, aname, 13197c478bd9Sstevel@tonic-gate clmp, flags, fdesc, rej)) != 0) || 13207c478bd9Sstevel@tonic-gate ((obj->co_flags & RTC_OBJ_OPTINAL) == 0)) 13217c478bd9Sstevel@tonic-gate return (ret); 13227c478bd9Sstevel@tonic-gate 13237c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 13247c478bd9Sstevel@tonic-gate } 13257c478bd9Sstevel@tonic-gate } 13267c478bd9Sstevel@tonic-gate } 13277c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_libs_found(oname, 0)); 13287c478bd9Sstevel@tonic-gate return (file_open(err, lml, oname, oname, clmp, flags, fdesc, rej)); 13297c478bd9Sstevel@tonic-gate } 13307c478bd9Sstevel@tonic-gate 13317c478bd9Sstevel@tonic-gate /* 13327c478bd9Sstevel@tonic-gate * Find a simple filename (it doesn't contain a "/"). 13337c478bd9Sstevel@tonic-gate */ 13347c478bd9Sstevel@tonic-gate static int 13357c478bd9Sstevel@tonic-gate _find_file(Lm_list *lml, const char *oname, const char *nname, Rt_map *clmp, 13367c478bd9Sstevel@tonic-gate uint_t flags, Fdesc * fdesc, Rej_desc *rej, Pnode * dir, int aflag) 13377c478bd9Sstevel@tonic-gate { 13387c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_libs_found(nname, aflag)); 13397c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_SEARCH) && 13407c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 13417c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_PTH_TRYING), nname, aflag ? 13427c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_ALTER) : MSG_ORIG(MSG_STR_EMPTY)); 13437c478bd9Sstevel@tonic-gate } 13447c478bd9Sstevel@tonic-gate 13457c478bd9Sstevel@tonic-gate /* 13467c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're about 13477c478bd9Sstevel@tonic-gate * to go search for. The audit library may offer an alternative 13487c478bd9Sstevel@tonic-gate * dependency, or indicate that this dependency should be ignored. 13497c478bd9Sstevel@tonic-gate */ 13507c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 13517c478bd9Sstevel@tonic-gate char *aname = audit_objsearch(clmp, nname, dir->p_orig); 13527c478bd9Sstevel@tonic-gate 13537c478bd9Sstevel@tonic-gate if (aname == 0) 13547c478bd9Sstevel@tonic-gate return (0); 13557c478bd9Sstevel@tonic-gate nname = aname; 13567c478bd9Sstevel@tonic-gate } 13577c478bd9Sstevel@tonic-gate return (file_open(0, lml, oname, nname, clmp, flags, fdesc, rej)); 13587c478bd9Sstevel@tonic-gate } 13597c478bd9Sstevel@tonic-gate 1360390b98b5Srie static int 13617c478bd9Sstevel@tonic-gate find_file(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 13627c478bd9Sstevel@tonic-gate Fdesc * fdesc, Rej_desc *rej, Pnode * dir, Word * strhash, size_t olen) 13637c478bd9Sstevel@tonic-gate { 13647c478bd9Sstevel@tonic-gate static Rtc_obj Obj = { 0 }; 13657c478bd9Sstevel@tonic-gate Rtc_obj * dobj; 13667c478bd9Sstevel@tonic-gate const char *nname = oname; 13677c478bd9Sstevel@tonic-gate 13687c478bd9Sstevel@tonic-gate if (dir->p_name == 0) 13697c478bd9Sstevel@tonic-gate return (0); 13707c478bd9Sstevel@tonic-gate if (dir->p_info) { 13717c478bd9Sstevel@tonic-gate dobj = (Rtc_obj *)dir->p_info; 13727c478bd9Sstevel@tonic-gate if ((dobj->co_flags & 13737c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 13747c478bd9Sstevel@tonic-gate return (0); 13757c478bd9Sstevel@tonic-gate } else 13767c478bd9Sstevel@tonic-gate dobj = 0; 13777c478bd9Sstevel@tonic-gate 13787c478bd9Sstevel@tonic-gate /* 13797c478bd9Sstevel@tonic-gate * If configuration information exists see if this directory/file 13807c478bd9Sstevel@tonic-gate * combination exists. 13817c478bd9Sstevel@tonic-gate */ 13827c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_DIRCFG) && 13837c478bd9Sstevel@tonic-gate ((dobj == 0) || (dobj->co_id != 0))) { 13847c478bd9Sstevel@tonic-gate Rtc_obj *fobj; 13857c478bd9Sstevel@tonic-gate const char *alt = 0; 13867c478bd9Sstevel@tonic-gate 13877c478bd9Sstevel@tonic-gate /* 13887c478bd9Sstevel@tonic-gate * If this pnode has not yet been searched for in the 13897c478bd9Sstevel@tonic-gate * configuration file go find it. 13907c478bd9Sstevel@tonic-gate */ 13917c478bd9Sstevel@tonic-gate if (dobj == 0) { 13927c478bd9Sstevel@tonic-gate dobj = elf_config_ent(dir->p_name, 13937c478bd9Sstevel@tonic-gate (Word)elf_hash(dir->p_name), 0, 0); 13947c478bd9Sstevel@tonic-gate if (dobj == 0) 13957c478bd9Sstevel@tonic-gate dobj = &Obj; 13967c478bd9Sstevel@tonic-gate dir->p_info = (void *)dobj; 13977c478bd9Sstevel@tonic-gate 13987c478bd9Sstevel@tonic-gate if ((dobj->co_flags & (RTC_OBJ_NOEXIST | 13997c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 14007c478bd9Sstevel@tonic-gate return (0); 14017c478bd9Sstevel@tonic-gate } 14027c478bd9Sstevel@tonic-gate 14037c478bd9Sstevel@tonic-gate /* 14047c478bd9Sstevel@tonic-gate * If we found a directory search for the file. 14057c478bd9Sstevel@tonic-gate */ 14067c478bd9Sstevel@tonic-gate if (dobj->co_id != 0) { 14077c478bd9Sstevel@tonic-gate if (*strhash == 0) 14087c478bd9Sstevel@tonic-gate *strhash = (Word)elf_hash(nname); 14097c478bd9Sstevel@tonic-gate fobj = elf_config_ent(nname, *strhash, 14107c478bd9Sstevel@tonic-gate dobj->co_id, &alt); 14117c478bd9Sstevel@tonic-gate 14127c478bd9Sstevel@tonic-gate /* 14137c478bd9Sstevel@tonic-gate * If this object specifically does not exist, or the 14147c478bd9Sstevel@tonic-gate * object can't be found in a know-all-entries 14157c478bd9Sstevel@tonic-gate * directory, continue looking. If the object does 14167c478bd9Sstevel@tonic-gate * exist determine if an alternative object exists. 14177c478bd9Sstevel@tonic-gate */ 14187c478bd9Sstevel@tonic-gate if (fobj == 0) { 14197c478bd9Sstevel@tonic-gate if (dobj->co_flags & RTC_OBJ_ALLENTS) 14207c478bd9Sstevel@tonic-gate return (0); 14217c478bd9Sstevel@tonic-gate } else { 14227c478bd9Sstevel@tonic-gate if ((fobj->co_flags & (RTC_OBJ_NOEXIST | 14237c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 14247c478bd9Sstevel@tonic-gate return (0); 14257c478bd9Sstevel@tonic-gate 14267c478bd9Sstevel@tonic-gate if ((fobj->co_flags & RTC_OBJ_ALTER) && 14277c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && 14287c478bd9Sstevel@tonic-gate (lml == &lml_main)) { 14297c478bd9Sstevel@tonic-gate int ret; 14307c478bd9Sstevel@tonic-gate 14317c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 14327c478bd9Sstevel@tonic-gate /* 14337c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. 14347c478bd9Sstevel@tonic-gate * If this fails, and the alternative is 14357c478bd9Sstevel@tonic-gate * flagged as optional, fall through to 14367c478bd9Sstevel@tonic-gate * open the original path. 14377c478bd9Sstevel@tonic-gate */ 14387c478bd9Sstevel@tonic-gate ret = _find_file(lml, oname, alt, clmp, 14397c478bd9Sstevel@tonic-gate flags, fdesc, rej, dir, 1); 14407c478bd9Sstevel@tonic-gate if (ret || ((fobj->co_flags & 14417c478bd9Sstevel@tonic-gate RTC_OBJ_OPTINAL) == 0)) 14427c478bd9Sstevel@tonic-gate return (ret); 14437c478bd9Sstevel@tonic-gate 14447c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 14457c478bd9Sstevel@tonic-gate } 14467c478bd9Sstevel@tonic-gate } 14477c478bd9Sstevel@tonic-gate } 14487c478bd9Sstevel@tonic-gate } 14497c478bd9Sstevel@tonic-gate 14507c478bd9Sstevel@tonic-gate /* 14517c478bd9Sstevel@tonic-gate * Protect ourselves from building an invalid pathname. 14527c478bd9Sstevel@tonic-gate */ 14537c478bd9Sstevel@tonic-gate if ((olen + dir->p_len + 1) >= PATH_MAX) { 14547c478bd9Sstevel@tonic-gate eprintf(ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), nname, 14557c478bd9Sstevel@tonic-gate strerror(ENAMETOOLONG)); 14567c478bd9Sstevel@tonic-gate return (0); 14577c478bd9Sstevel@tonic-gate } 14587c478bd9Sstevel@tonic-gate if ((nname = (LM_GET_SO(clmp)(dir->p_name, nname))) == 0) 14597c478bd9Sstevel@tonic-gate return (0); 14607c478bd9Sstevel@tonic-gate 14617c478bd9Sstevel@tonic-gate return (_find_file(lml, oname, nname, clmp, flags, fdesc, rej, dir, 0)); 14627c478bd9Sstevel@tonic-gate } 14637c478bd9Sstevel@tonic-gate 14647c478bd9Sstevel@tonic-gate /* 14657c478bd9Sstevel@tonic-gate * A unique file has been opened. Create a link-map to represent it, and 14667c478bd9Sstevel@tonic-gate * process the various names by which it can be referenced. 14677c478bd9Sstevel@tonic-gate */ 14687c478bd9Sstevel@tonic-gate static Rt_map * 1469390b98b5Srie load_file(Lm_list *lml, Aliste lmco, Fdesc * fdesc) 14707c478bd9Sstevel@tonic-gate { 14717c478bd9Sstevel@tonic-gate const char *oname = fdesc->fd_oname; 14727c478bd9Sstevel@tonic-gate const char *nname = fdesc->fd_nname; 14737c478bd9Sstevel@tonic-gate Rt_map *nlmp; 14747c478bd9Sstevel@tonic-gate 14757c478bd9Sstevel@tonic-gate /* 14767c478bd9Sstevel@tonic-gate * Typically we call fct_map_so() with the full pathname of the opened 14777c478bd9Sstevel@tonic-gate * file (nname) and the name that started the search (oname), thus for 14787c478bd9Sstevel@tonic-gate * a typical dependency on libc this would be /usr/lib/libc.so.1 and 14797c478bd9Sstevel@tonic-gate * libc.so.1 (DT_NEEDED). The original name is maintained on an ALIAS 14807c478bd9Sstevel@tonic-gate * list for comparison when bringing in new dependencies. If the user 14817c478bd9Sstevel@tonic-gate * specified name as a full path (from a dlopen() for example) then 14827c478bd9Sstevel@tonic-gate * there's no need to create an ALIAS. 14837c478bd9Sstevel@tonic-gate */ 14847c478bd9Sstevel@tonic-gate if (strcmp(oname, nname) == 0) 14857c478bd9Sstevel@tonic-gate oname = 0; 14867c478bd9Sstevel@tonic-gate 14877c478bd9Sstevel@tonic-gate /* 14887c478bd9Sstevel@tonic-gate * A new file has been opened, now map it into the process. Close the 14897c478bd9Sstevel@tonic-gate * original file so as not to accumulate file descriptors. 14907c478bd9Sstevel@tonic-gate */ 14917c478bd9Sstevel@tonic-gate nlmp = ((fdesc->fd_ftp)->fct_map_so)(lml, lmco, nname, oname, 14927c478bd9Sstevel@tonic-gate fdesc->fd_fd); 14937c478bd9Sstevel@tonic-gate (void) close(fdesc->fd_fd); 14947c478bd9Sstevel@tonic-gate fdesc->fd_fd = 0; 14957c478bd9Sstevel@tonic-gate 14967c478bd9Sstevel@tonic-gate if (nlmp == 0) 14977c478bd9Sstevel@tonic-gate return (0); 14987c478bd9Sstevel@tonic-gate 14997c478bd9Sstevel@tonic-gate /* 15007c478bd9Sstevel@tonic-gate * Save the dev/inode information for later comparisons. 15017c478bd9Sstevel@tonic-gate */ 15027c478bd9Sstevel@tonic-gate STDEV(nlmp) = fdesc->fd_dev; 15037c478bd9Sstevel@tonic-gate STINO(nlmp) = fdesc->fd_ino; 15047c478bd9Sstevel@tonic-gate 15057c478bd9Sstevel@tonic-gate /* 15067c478bd9Sstevel@tonic-gate * Insert the names of this link-map into the FullpathNode AVL tree. 15077c478bd9Sstevel@tonic-gate * Save both the NAME() and PATHNAME() is they differ. 15087c478bd9Sstevel@tonic-gate * 15097c478bd9Sstevel@tonic-gate * If this is an OBJECT file, don't insert it yet as this is only a 15107c478bd9Sstevel@tonic-gate * temporary link-map. During elf_obj_fini() the final link-map is 15117c478bd9Sstevel@tonic-gate * created, and its names will be inserted in the FullpathNode AVL 15127c478bd9Sstevel@tonic-gate * tree at that time. 15137c478bd9Sstevel@tonic-gate */ 15147c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_OBJECT) == 0) { 15157c478bd9Sstevel@tonic-gate /* 15167c478bd9Sstevel@tonic-gate * Update the objects full path information if necessary. 15177c478bd9Sstevel@tonic-gate */ 15187c478bd9Sstevel@tonic-gate if (FLAGS1(nlmp) & FL1_RT_RELATIVE) { 15197c478bd9Sstevel@tonic-gate (void) fullpath(nlmp, fdesc->fd_pname); 15207c478bd9Sstevel@tonic-gate fdesc->fd_pname = 0; 15217c478bd9Sstevel@tonic-gate } 15227c478bd9Sstevel@tonic-gate 15237c478bd9Sstevel@tonic-gate if ((NAME(nlmp)[0] == '/') && (fpavl_insert(lml, nlmp, 15247c478bd9Sstevel@tonic-gate NAME(nlmp), fdesc->fd_avlwhere) == 0)) { 15257c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 15267c478bd9Sstevel@tonic-gate return (0); 15277c478bd9Sstevel@tonic-gate } 15287c478bd9Sstevel@tonic-gate if (((NAME(nlmp)[0] != '/') || 15297c478bd9Sstevel@tonic-gate (NAME(nlmp) != PATHNAME(nlmp))) && 15307c478bd9Sstevel@tonic-gate (fpavl_insert(lml, nlmp, PATHNAME(nlmp), 0) == 0)) { 15317c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 15327c478bd9Sstevel@tonic-gate return (0); 15337c478bd9Sstevel@tonic-gate } 15347c478bd9Sstevel@tonic-gate } 15357c478bd9Sstevel@tonic-gate 15367c478bd9Sstevel@tonic-gate /* 15377c478bd9Sstevel@tonic-gate * If we're processing an alternative object reset the original name 15387c478bd9Sstevel@tonic-gate * for possible $ORIGIN processing. 15397c478bd9Sstevel@tonic-gate */ 15407c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_ALTER) { 15417c478bd9Sstevel@tonic-gate const char *odir; 15427c478bd9Sstevel@tonic-gate char *ndir; 15437c478bd9Sstevel@tonic-gate size_t olen; 15447c478bd9Sstevel@tonic-gate 15457c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= FLG_RT_ALTER; 15467c478bd9Sstevel@tonic-gate 15477c478bd9Sstevel@tonic-gate /* 15487c478bd9Sstevel@tonic-gate * If we were given a pathname containing a slash then the 15497c478bd9Sstevel@tonic-gate * original name is still in oname. Otherwise the original 15507c478bd9Sstevel@tonic-gate * directory is in dir->p_name (which is all we need for 15517c478bd9Sstevel@tonic-gate * $ORIGIN). 15527c478bd9Sstevel@tonic-gate */ 15537c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_SLASH) { 15547c478bd9Sstevel@tonic-gate char *ofil; 15557c478bd9Sstevel@tonic-gate 15567c478bd9Sstevel@tonic-gate odir = oname; 15577c478bd9Sstevel@tonic-gate ofil = strrchr(oname, '/'); 15587c478bd9Sstevel@tonic-gate olen = ofil - odir + 1; 15597c478bd9Sstevel@tonic-gate } else { 15607c478bd9Sstevel@tonic-gate odir = fdesc->fd_odir; 15617c478bd9Sstevel@tonic-gate olen = strlen(odir) + 1; 15627c478bd9Sstevel@tonic-gate } 15637c478bd9Sstevel@tonic-gate 15647c478bd9Sstevel@tonic-gate if ((ndir = (char *)malloc(olen)) == 0) { 15657c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 15667c478bd9Sstevel@tonic-gate return (0); 15677c478bd9Sstevel@tonic-gate } 15687c478bd9Sstevel@tonic-gate (void) strncpy(ndir, odir, olen); 15697c478bd9Sstevel@tonic-gate ndir[--olen] = '\0'; 15707c478bd9Sstevel@tonic-gate 15717c478bd9Sstevel@tonic-gate ORIGNAME(nlmp) = ndir; 15727c478bd9Sstevel@tonic-gate DIRSZ(nlmp) = olen; 15737c478bd9Sstevel@tonic-gate } 15747c478bd9Sstevel@tonic-gate 15757c478bd9Sstevel@tonic-gate /* 1576390b98b5Srie * Identify this as a new object. 15777c478bd9Sstevel@tonic-gate */ 1578390b98b5Srie FLAGS(nlmp) |= FLG_RT_NEWLOAD; 15797c478bd9Sstevel@tonic-gate 15807c478bd9Sstevel@tonic-gate /* 15817c478bd9Sstevel@tonic-gate * Report module loads to TLS module activity. 15827c478bd9Sstevel@tonic-gate */ 15837c478bd9Sstevel@tonic-gate if (nlmp) 15847c478bd9Sstevel@tonic-gate tls_modactivity(nlmp, TM_FLG_MODADD); 15857c478bd9Sstevel@tonic-gate 15867c478bd9Sstevel@tonic-gate return (nlmp); 15877c478bd9Sstevel@tonic-gate } 15887c478bd9Sstevel@tonic-gate 15897c478bd9Sstevel@tonic-gate /* 15907c478bd9Sstevel@tonic-gate * This function loads the named file and returns a pointer to its link map. 15917c478bd9Sstevel@tonic-gate * It is assumed that the caller has already checked that the file is not 15927c478bd9Sstevel@tonic-gate * already loaded before calling this function (refer is_so_loaded()). 15937c478bd9Sstevel@tonic-gate * Find and open the file, map it into memory, add it to the end of the list 15947c478bd9Sstevel@tonic-gate * of link maps and return a pointer to the new link map. Return 0 on error. 15957c478bd9Sstevel@tonic-gate */ 15967c478bd9Sstevel@tonic-gate static Rt_map * 15977c478bd9Sstevel@tonic-gate load_so(Lm_list *lml, Aliste lmco, const char *oname, Rt_map *clmp, 15987c478bd9Sstevel@tonic-gate uint_t flags, Fdesc *fdp, Rej_desc *rej) 15997c478bd9Sstevel@tonic-gate { 16007c478bd9Sstevel@tonic-gate char *name; 16017c478bd9Sstevel@tonic-gate uint_t slash = 0; 16027c478bd9Sstevel@tonic-gate size_t olen; 16037c478bd9Sstevel@tonic-gate Fdesc fdesc, _fdesc = { 0 }; 16047c478bd9Sstevel@tonic-gate Pnode *dir; 16057c478bd9Sstevel@tonic-gate Rt_map *nlmp; 16067c478bd9Sstevel@tonic-gate 16077c478bd9Sstevel@tonic-gate /* 16087c478bd9Sstevel@tonic-gate * If the file is the run time linker then it's already loaded. 16097c478bd9Sstevel@tonic-gate */ 16107c478bd9Sstevel@tonic-gate if (interp && (strcmp(oname, NAME(lml_rtld.lm_head)) == 0)) 16117c478bd9Sstevel@tonic-gate return (lml_rtld.lm_head); 16127c478bd9Sstevel@tonic-gate 16137c478bd9Sstevel@tonic-gate /* 16147c478bd9Sstevel@tonic-gate * If this isn't a hardware capabilites pathname, which is already a 16157c478bd9Sstevel@tonic-gate * full, duplicated pathname, determine whether the pathname contains 16167c478bd9Sstevel@tonic-gate * a slash, and if not determine the input filename (for max path 16177c478bd9Sstevel@tonic-gate * length verification). 16187c478bd9Sstevel@tonic-gate */ 16197c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) == 0) { 16207c478bd9Sstevel@tonic-gate const char *str; 16217c478bd9Sstevel@tonic-gate 16227c478bd9Sstevel@tonic-gate for (str = oname; *str; str++) { 16237c478bd9Sstevel@tonic-gate if (*str == '/') { 16247c478bd9Sstevel@tonic-gate slash++; 16257c478bd9Sstevel@tonic-gate break; 16267c478bd9Sstevel@tonic-gate } 16277c478bd9Sstevel@tonic-gate } 16287c478bd9Sstevel@tonic-gate if (slash == 0) 16297c478bd9Sstevel@tonic-gate olen = (str - oname) + 1; 16307c478bd9Sstevel@tonic-gate } 16317c478bd9Sstevel@tonic-gate 16327c478bd9Sstevel@tonic-gate /* 16337c478bd9Sstevel@tonic-gate * If we are passed a 'null' link-map this means that this is the first 16347c478bd9Sstevel@tonic-gate * object to be loaded on this link-map list. In that case we set the 16357c478bd9Sstevel@tonic-gate * link-map to ld.so.1's link-map. 16367c478bd9Sstevel@tonic-gate * 16377c478bd9Sstevel@tonic-gate * This link-map is referenced to determine what lookup rules to use 16387c478bd9Sstevel@tonic-gate * when searching for files. By using ld.so.1's we are defaulting to 16397c478bd9Sstevel@tonic-gate * ELF look-up rules. 16407c478bd9Sstevel@tonic-gate * 16417c478bd9Sstevel@tonic-gate * Note: This case happens when loading the first object onto 16427c478bd9Sstevel@tonic-gate * the plt_tracing link-map. 16437c478bd9Sstevel@tonic-gate */ 16447c478bd9Sstevel@tonic-gate if (clmp == 0) 16457c478bd9Sstevel@tonic-gate clmp = lml_rtld.lm_head; 16467c478bd9Sstevel@tonic-gate 16477c478bd9Sstevel@tonic-gate /* 16487c478bd9Sstevel@tonic-gate * If this path resulted from a $HWCAP specification, then the best 16497c478bd9Sstevel@tonic-gate * hardware capability object has already been establish, and is 16507c478bd9Sstevel@tonic-gate * available in the calling file descriptor. Perform some minor book- 16517c478bd9Sstevel@tonic-gate * keeping so that we can fall through into common code. 16527c478bd9Sstevel@tonic-gate */ 16537c478bd9Sstevel@tonic-gate if (flags & FLG_RT_HWCAP) { 16547c478bd9Sstevel@tonic-gate fdesc = *fdp; 16557c478bd9Sstevel@tonic-gate 16567c478bd9Sstevel@tonic-gate /* 16577c478bd9Sstevel@tonic-gate * Restablish the Fmap structure to reflect this objects 16587c478bd9Sstevel@tonic-gate * original initial page mapping. Make sure any present Fmap 16597c478bd9Sstevel@tonic-gate * mapping is removed before overwriting the structure. 16607c478bd9Sstevel@tonic-gate */ 16617c478bd9Sstevel@tonic-gate if (fdesc.fd_lmp == 0) { 16627c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 16637c478bd9Sstevel@tonic-gate if (fmap->fm_maddr && 16647c478bd9Sstevel@tonic-gate ((fmap->fm_mflags & MAP_ALIGN) == 0)) 16657c478bd9Sstevel@tonic-gate #else 16667c478bd9Sstevel@tonic-gate if (fmap->fm_maddr) 16677c478bd9Sstevel@tonic-gate #endif 16687c478bd9Sstevel@tonic-gate (void) munmap(fmap->fm_maddr, fmap->fm_msize); 16697c478bd9Sstevel@tonic-gate *fmap = fdesc.fd_fmap; 16707c478bd9Sstevel@tonic-gate 16717c478bd9Sstevel@tonic-gate /* 16727c478bd9Sstevel@tonic-gate * Obtain the avl index for this object. 16737c478bd9Sstevel@tonic-gate */ 16747c478bd9Sstevel@tonic-gate (void) fpavl_loaded(lml, fdesc.fd_nname, 16757c478bd9Sstevel@tonic-gate &(fdesc.fd_avlwhere)); 16767c478bd9Sstevel@tonic-gate } else { 16777c478bd9Sstevel@tonic-gate /* 16787c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 16797c478bd9Sstevel@tonic-gate */ 16807c478bd9Sstevel@tonic-gate return (fdesc.fd_lmp); 16817c478bd9Sstevel@tonic-gate } 16827c478bd9Sstevel@tonic-gate 16837c478bd9Sstevel@tonic-gate } else if (slash) { 16847c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 16857c478bd9Sstevel@tonic-gate 16867c478bd9Sstevel@tonic-gate fdesc = _fdesc; 16877c478bd9Sstevel@tonic-gate fdesc.fd_flags = FLG_FD_SLASH; 16887c478bd9Sstevel@tonic-gate 16897c478bd9Sstevel@tonic-gate if (find_path(lml, oname, clmp, flags, &fdesc, &_rej) == 0) { 16907c478bd9Sstevel@tonic-gate rejection_inherit(rej, &_rej, &fdesc); 16917c478bd9Sstevel@tonic-gate return (0); 16927c478bd9Sstevel@tonic-gate } 16937c478bd9Sstevel@tonic-gate 16947c478bd9Sstevel@tonic-gate /* 16957c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 16967c478bd9Sstevel@tonic-gate */ 16977c478bd9Sstevel@tonic-gate if (fdesc.fd_lmp) 16987c478bd9Sstevel@tonic-gate return (fdesc.fd_lmp); 16997c478bd9Sstevel@tonic-gate 17007c478bd9Sstevel@tonic-gate } else { 17017c478bd9Sstevel@tonic-gate /* 17027c478bd9Sstevel@tonic-gate * No '/' - for each directory on list, make a pathname using 17037c478bd9Sstevel@tonic-gate * that directory and filename and try to open that file. 17047c478bd9Sstevel@tonic-gate */ 17057c478bd9Sstevel@tonic-gate Pnode * dirlist = (Pnode *)0; 17067c478bd9Sstevel@tonic-gate Word strhash = 0; 17077c478bd9Sstevel@tonic-gate 17087c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_libs_find(oname)); 17097c478bd9Sstevel@tonic-gate 17107c478bd9Sstevel@tonic-gate #if !defined(ISSOLOAD_BASENAME_DISABLED) 17117c478bd9Sstevel@tonic-gate if ((nlmp = is_so_loaded(lml, oname, 0))) 17127c478bd9Sstevel@tonic-gate return (nlmp); 17137c478bd9Sstevel@tonic-gate #endif 17147c478bd9Sstevel@tonic-gate /* 17157c478bd9Sstevel@tonic-gate * Make sure we clear the file descriptor new name in case the 17167c478bd9Sstevel@tonic-gate * following directory search doesn't provide any directories 17177c478bd9Sstevel@tonic-gate * (odd, but this can be forced with a -znodefaultlib test). 17187c478bd9Sstevel@tonic-gate */ 17197c478bd9Sstevel@tonic-gate fdesc = _fdesc; 17207c478bd9Sstevel@tonic-gate for (dir = get_next_dir(&dirlist, clmp, flags); dir; 17217c478bd9Sstevel@tonic-gate dir = get_next_dir(&dirlist, clmp, flags)) { 17227c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 17237c478bd9Sstevel@tonic-gate 17247c478bd9Sstevel@tonic-gate fdesc = _fdesc; 17257c478bd9Sstevel@tonic-gate 17267c478bd9Sstevel@tonic-gate /* 17277c478bd9Sstevel@tonic-gate * Try and locate this file. Make sure to clean up 17287c478bd9Sstevel@tonic-gate * any rejection information should the file have 17297c478bd9Sstevel@tonic-gate * been found, but not appropriate. 17307c478bd9Sstevel@tonic-gate */ 17317c478bd9Sstevel@tonic-gate if (find_file(lml, oname, clmp, flags, &fdesc, &_rej, 17327c478bd9Sstevel@tonic-gate dir, &strhash, olen) == 0) { 17337c478bd9Sstevel@tonic-gate rejection_inherit(rej, &_rej, &fdesc); 17347c478bd9Sstevel@tonic-gate continue; 17357c478bd9Sstevel@tonic-gate } 17367c478bd9Sstevel@tonic-gate 17377c478bd9Sstevel@tonic-gate /* 17387c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 17397c478bd9Sstevel@tonic-gate */ 17407c478bd9Sstevel@tonic-gate if (fdesc.fd_lmp) 17417c478bd9Sstevel@tonic-gate return (fdesc.fd_lmp); 17427c478bd9Sstevel@tonic-gate 17437c478bd9Sstevel@tonic-gate fdesc.fd_odir = dir->p_name; 17447c478bd9Sstevel@tonic-gate break; 17457c478bd9Sstevel@tonic-gate } 17467c478bd9Sstevel@tonic-gate 17477c478bd9Sstevel@tonic-gate /* 17487c478bd9Sstevel@tonic-gate * If the file couldn't be loaded, do another comparison of 17497c478bd9Sstevel@tonic-gate * loaded files using just the basename. This catches folks 17507c478bd9Sstevel@tonic-gate * who may have loaded multiple full pathname files (possibly 17517c478bd9Sstevel@tonic-gate * from setxid applications) to satisfy dependency relationships 17527c478bd9Sstevel@tonic-gate * (i.e., a file might have a dependency on foo.so.1 which has 17537c478bd9Sstevel@tonic-gate * already been opened using its full pathname). 17547c478bd9Sstevel@tonic-gate */ 17557c478bd9Sstevel@tonic-gate if (fdesc.fd_nname == 0) 17567c478bd9Sstevel@tonic-gate return (is_so_loaded(lml, oname, 1)); 17577c478bd9Sstevel@tonic-gate } 17587c478bd9Sstevel@tonic-gate 17597c478bd9Sstevel@tonic-gate /* 17607c478bd9Sstevel@tonic-gate * Duplicate the file name so that NAME() is available in core files. 17617c478bd9Sstevel@tonic-gate * Note, that hardware capability names are already duplicated, but 17627c478bd9Sstevel@tonic-gate * they get duplicated once more to insure consistent cleanup in the 17637c478bd9Sstevel@tonic-gate * event of an error condition. 17647c478bd9Sstevel@tonic-gate */ 17657c478bd9Sstevel@tonic-gate if ((name = strdup(fdesc.fd_nname)) == 0) { 17667c478bd9Sstevel@tonic-gate (void) close(fdesc.fd_fd); 17677c478bd9Sstevel@tonic-gate return (0); 17687c478bd9Sstevel@tonic-gate } 17697c478bd9Sstevel@tonic-gate if (fdesc.fd_nname == fdesc.fd_pname) 17707c478bd9Sstevel@tonic-gate fdesc.fd_nname = fdesc.fd_pname = name; 17717c478bd9Sstevel@tonic-gate else 17727c478bd9Sstevel@tonic-gate fdesc.fd_nname = name; 17737c478bd9Sstevel@tonic-gate 17747c478bd9Sstevel@tonic-gate /* 17757c478bd9Sstevel@tonic-gate * Finish mapping the file and return the link-map descriptor. Note, 17767c478bd9Sstevel@tonic-gate * if this request originated from a HWCAP request, re-establish the 17777c478bd9Sstevel@tonic-gate * fdesc information. For single paged objects, such as filters, the 17787c478bd9Sstevel@tonic-gate * original mapping may have been sufficient to capture the file, thus 17797c478bd9Sstevel@tonic-gate * this mapping needs to be reset to insure it doesn't mistakenly get 17807c478bd9Sstevel@tonic-gate * unmapped as part of HWCAP cleanup. 17817c478bd9Sstevel@tonic-gate */ 1782390b98b5Srie nlmp = load_file(lml, lmco, &fdesc); 17837c478bd9Sstevel@tonic-gate 17847c478bd9Sstevel@tonic-gate if (flags & FLG_RT_HWCAP) { 17857c478bd9Sstevel@tonic-gate fdp->fd_fmap.fm_maddr = fmap->fm_maddr; 17867c478bd9Sstevel@tonic-gate fdp->fd_fmap.fm_mflags = fmap->fm_mflags; 17877c478bd9Sstevel@tonic-gate fdp->fd_pname = fdesc.fd_pname; 17887c478bd9Sstevel@tonic-gate fdp->fd_fd = fdesc.fd_fd; 17897c478bd9Sstevel@tonic-gate } 17907c478bd9Sstevel@tonic-gate 17917c478bd9Sstevel@tonic-gate return (nlmp); 17927c478bd9Sstevel@tonic-gate } 17937c478bd9Sstevel@tonic-gate 17947c478bd9Sstevel@tonic-gate /* 17957c478bd9Sstevel@tonic-gate * Trace an attempt to load an object. 17967c478bd9Sstevel@tonic-gate */ 17977c478bd9Sstevel@tonic-gate const char * 17987c478bd9Sstevel@tonic-gate load_trace(Lm_list *lml, const char *name, Rt_map *clmp) 17997c478bd9Sstevel@tonic-gate { 18007c478bd9Sstevel@tonic-gate /* 18017c478bd9Sstevel@tonic-gate * First generate any ldd(1) diagnostics. 18027c478bd9Sstevel@tonic-gate */ 18037c478bd9Sstevel@tonic-gate if ((lml->lm_flags & (LML_FLG_TRC_VERBOSE | LML_FLG_TRC_SEARCH)) && 18047c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) 18057c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, NAME(clmp)); 18067c478bd9Sstevel@tonic-gate 18077c478bd9Sstevel@tonic-gate /* 18087c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're 18097c478bd9Sstevel@tonic-gate * about to go search for. 18107c478bd9Sstevel@tonic-gate */ 18117c478bd9Sstevel@tonic-gate if (((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_ACTIVITY) && 18127c478bd9Sstevel@tonic-gate (lml == LIST(clmp))) 18137c478bd9Sstevel@tonic-gate audit_activity(clmp, LA_ACT_ADD); 18147c478bd9Sstevel@tonic-gate 18157c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 18167c478bd9Sstevel@tonic-gate char *_name; 18177c478bd9Sstevel@tonic-gate 18187c478bd9Sstevel@tonic-gate /* 18197c478bd9Sstevel@tonic-gate * The auditor can indicate that this object should be ignored. 18207c478bd9Sstevel@tonic-gate */ 18217c478bd9Sstevel@tonic-gate if ((_name = audit_objsearch(clmp, name, LA_SER_ORIG)) == 0) { 18227c478bd9Sstevel@tonic-gate eprintf(ERR_FATAL, MSG_INTL(MSG_GEN_AUDITERM), name); 18237c478bd9Sstevel@tonic-gate return (0); 18247c478bd9Sstevel@tonic-gate } 18257c478bd9Sstevel@tonic-gate 18267c478bd9Sstevel@tonic-gate /* 18277c478bd9Sstevel@tonic-gate * The auditor can provide an alternative name. 18287c478bd9Sstevel@tonic-gate */ 18297c478bd9Sstevel@tonic-gate if (_name != name) { 18307c478bd9Sstevel@tonic-gate free((void *)name); 18317c478bd9Sstevel@tonic-gate name = strdup(_name); 18327c478bd9Sstevel@tonic-gate } 18337c478bd9Sstevel@tonic-gate } 18347c478bd9Sstevel@tonic-gate return (name); 18357c478bd9Sstevel@tonic-gate } 18367c478bd9Sstevel@tonic-gate 18377c478bd9Sstevel@tonic-gate /* 18387c478bd9Sstevel@tonic-gate * Having loaded an object and created a link-map to describe it, finish 18397c478bd9Sstevel@tonic-gate * processing this stage, including verifying any versioning requirements, 18407c478bd9Sstevel@tonic-gate * updating the objects mode, creating a handle if necessary, and adding this 18417c478bd9Sstevel@tonic-gate * object to existing handles if required. 18427c478bd9Sstevel@tonic-gate */ 1843390b98b5Srie static int 18447c478bd9Sstevel@tonic-gate load_finish(Lm_list *lml, const char *name, Rt_map * clmp, int nmode, 18457c478bd9Sstevel@tonic-gate uint_t flags, Grp_hdl ** hdl, Rt_map * nlmp) 18467c478bd9Sstevel@tonic-gate { 18477c478bd9Sstevel@tonic-gate Aliste off; 18487c478bd9Sstevel@tonic-gate Grp_hdl *ghp, **ghpp; 18497c478bd9Sstevel@tonic-gate int promote; 18507c478bd9Sstevel@tonic-gate 18517c478bd9Sstevel@tonic-gate /* 18527c478bd9Sstevel@tonic-gate * If this dependency is associated with a required version insure that 18537c478bd9Sstevel@tonic-gate * the version is present in the loaded file. 18547c478bd9Sstevel@tonic-gate */ 18557c478bd9Sstevel@tonic-gate if (((rtld_flags & RT_FL_NOVERSION) == 0) && 18567c478bd9Sstevel@tonic-gate (FCT(clmp) == &elf_fct) && VERNEED(clmp) && 18577c478bd9Sstevel@tonic-gate (LM_VERIFY_VERS(clmp)(name, clmp, nlmp) == 0)) 18587c478bd9Sstevel@tonic-gate return (0); 18597c478bd9Sstevel@tonic-gate 18607c478bd9Sstevel@tonic-gate /* 18617c478bd9Sstevel@tonic-gate * If this object has indicated that it should be isolated as a group 18627c478bd9Sstevel@tonic-gate * (DT_FLAGS_1 contains DF_1_GROUP - object was built with -B group), 18637c478bd9Sstevel@tonic-gate * or if the callers direct bindings indicate it should be isolated as 18647c478bd9Sstevel@tonic-gate * a group (DYNINFO flags contains FLG_DI_GROUP - dependency followed 18657c478bd9Sstevel@tonic-gate * -zgroupperm), establish the appropriate mode. 18667c478bd9Sstevel@tonic-gate * 18677c478bd9Sstevel@tonic-gate * The intent of an object defining itself as a group is to isolate the 18687c478bd9Sstevel@tonic-gate * relocation of the group within its own members, however, unless 18697c478bd9Sstevel@tonic-gate * opened through dlopen(), in which case we assume dlsym() will be used 18707c478bd9Sstevel@tonic-gate * to located symbols in the new object, we still need to associate it 18717c478bd9Sstevel@tonic-gate * with the caller for it to be bound with. This is equivalent to a 18727c478bd9Sstevel@tonic-gate * dlopen(RTLD_GROUP) and dlsym() using the returned handle. 18737c478bd9Sstevel@tonic-gate */ 18747c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) | flags) & FLG_RT_SETGROUP) { 18757c478bd9Sstevel@tonic-gate nmode &= ~RTLD_WORLD; 18767c478bd9Sstevel@tonic-gate nmode |= RTLD_GROUP; 18777c478bd9Sstevel@tonic-gate 18787c478bd9Sstevel@tonic-gate /* 18797c478bd9Sstevel@tonic-gate * If the object wasn't explicitly dlopen()'ed associate it with 18807c478bd9Sstevel@tonic-gate * the parent. 18817c478bd9Sstevel@tonic-gate */ 18827c478bd9Sstevel@tonic-gate if (flags != FLG_RT_HANDLE) 18837c478bd9Sstevel@tonic-gate nmode |= RTLD_PARENT; 18847c478bd9Sstevel@tonic-gate } 18857c478bd9Sstevel@tonic-gate 18867c478bd9Sstevel@tonic-gate /* 18877c478bd9Sstevel@tonic-gate * Establish new mode and flags. 18887c478bd9Sstevel@tonic-gate * 18897c478bd9Sstevel@tonic-gate * For patch backward compatibility, the following use of update_mode() 18907c478bd9Sstevel@tonic-gate * is disabled. 18917c478bd9Sstevel@tonic-gate */ 18927c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 18937c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 18947c478bd9Sstevel@tonic-gate promote = MODE(nlmp) |= 18957c478bd9Sstevel@tonic-gate (nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST)); 18967c478bd9Sstevel@tonic-gate else 18977c478bd9Sstevel@tonic-gate #endif 18987c478bd9Sstevel@tonic-gate promote = update_mode(nlmp, MODE(nlmp), nmode); 18997c478bd9Sstevel@tonic-gate 19007c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= flags; 19017c478bd9Sstevel@tonic-gate 19027c478bd9Sstevel@tonic-gate /* 19037c478bd9Sstevel@tonic-gate * If we've been asked to establish a handle create one for this object. 19047c478bd9Sstevel@tonic-gate * Or, if this object has already been analyzed, but this reference 19057c478bd9Sstevel@tonic-gate * requires that the mode of the object be promoted, also create a 19067c478bd9Sstevel@tonic-gate * handle to propagate the new modes to all this objects dependencies. 19077c478bd9Sstevel@tonic-gate */ 19087c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) | flags) & FLG_RT_HANDLE) || (promote && 19097c478bd9Sstevel@tonic-gate (FLAGS(nlmp) & FLG_RT_ANALYZED))) { 19107c478bd9Sstevel@tonic-gate uint_t oflags, hflags = 0; 19117c478bd9Sstevel@tonic-gate 19127c478bd9Sstevel@tonic-gate if (nmode & RTLD_PARENT) 19137c478bd9Sstevel@tonic-gate hflags |= GPH_PARENT; 19147c478bd9Sstevel@tonic-gate if (nmode & RTLD_FIRST) 19157c478bd9Sstevel@tonic-gate hflags |= GPH_FIRST; 19167c478bd9Sstevel@tonic-gate 19177c478bd9Sstevel@tonic-gate /* 19187c478bd9Sstevel@tonic-gate * Now that a handle is being created, remove this state from 19197c478bd9Sstevel@tonic-gate * the object so that it doesn't mistakenly get inherited by 19207c478bd9Sstevel@tonic-gate * a dependency. 19217c478bd9Sstevel@tonic-gate */ 19227c478bd9Sstevel@tonic-gate oflags = FLAGS(nlmp); 19237c478bd9Sstevel@tonic-gate FLAGS(nlmp) &= ~FLG_RT_HANDLE; 19247c478bd9Sstevel@tonic-gate 19257c478bd9Sstevel@tonic-gate if ((ghp = hdl_create(lml, nlmp, clmp, hflags)) == 0) 19267c478bd9Sstevel@tonic-gate return (0); 19277c478bd9Sstevel@tonic-gate 19287c478bd9Sstevel@tonic-gate /* 19297c478bd9Sstevel@tonic-gate * Add any dependencies that are already loaded, to the handle. 19307c478bd9Sstevel@tonic-gate */ 19317c478bd9Sstevel@tonic-gate if (hdl_initialize(ghp, nlmp, clmp, nmode, promote) == 0) 19327c478bd9Sstevel@tonic-gate return (0); 19337c478bd9Sstevel@tonic-gate 19347c478bd9Sstevel@tonic-gate if (hdl) 19357c478bd9Sstevel@tonic-gate *hdl = ghp; 19367c478bd9Sstevel@tonic-gate 19377c478bd9Sstevel@tonic-gate /* 19387c478bd9Sstevel@tonic-gate * If we were asked to create a handle, we're done. Otherwise, 19397c478bd9Sstevel@tonic-gate * remove the handle. The handle was only used to establish this 19407c478bd9Sstevel@tonic-gate * objects dependencies and promote any modes, so we don't want 19417c478bd9Sstevel@tonic-gate * this handle preventing the objects deletion. Fall through to 19427c478bd9Sstevel@tonic-gate * carry out any group processing. 19437c478bd9Sstevel@tonic-gate */ 19447c478bd9Sstevel@tonic-gate if ((oflags | flags) & FLG_RT_HANDLE) 19457c478bd9Sstevel@tonic-gate return (1); 19467c478bd9Sstevel@tonic-gate 19477c478bd9Sstevel@tonic-gate free_hdl(ghp); 19487c478bd9Sstevel@tonic-gate } 19497c478bd9Sstevel@tonic-gate 19507c478bd9Sstevel@tonic-gate /* 19517c478bd9Sstevel@tonic-gate * If the caller isn't part of a group we're done. 19527c478bd9Sstevel@tonic-gate */ 19537c478bd9Sstevel@tonic-gate if (GROUPS(clmp) == 0) 19547c478bd9Sstevel@tonic-gate return (1); 19557c478bd9Sstevel@tonic-gate 19567c478bd9Sstevel@tonic-gate /* 19577c478bd9Sstevel@tonic-gate * Determine if our caller is already associated with a handle, if so 19587c478bd9Sstevel@tonic-gate * we need to add this object to any handles that already exist. 19597c478bd9Sstevel@tonic-gate * Traverse the list of groups our caller is a member of and add this 19607c478bd9Sstevel@tonic-gate * new link-map to those groups. 19617c478bd9Sstevel@tonic-gate */ 19627c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_hdl_title(DBG_DEP_ADD)); 19637c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(GROUPS(clmp), off, ghpp)) { 19647c478bd9Sstevel@tonic-gate Aliste off1; 19657c478bd9Sstevel@tonic-gate Grp_desc *gdp; 19667c478bd9Sstevel@tonic-gate int exist; 19677c478bd9Sstevel@tonic-gate Rt_map **lmpp; 19687c478bd9Sstevel@tonic-gate Alist *lmalp = 0; 19697c478bd9Sstevel@tonic-gate 19707c478bd9Sstevel@tonic-gate ghp = *ghpp; 19717c478bd9Sstevel@tonic-gate 19727c478bd9Sstevel@tonic-gate /* 19737c478bd9Sstevel@tonic-gate * If the caller doesn't indicate that its dependencies should 19747c478bd9Sstevel@tonic-gate * be added to a handle, ignore it. This case identifies a 19757c478bd9Sstevel@tonic-gate * parent of a dlopen(RTLD_PARENT) request. 19767c478bd9Sstevel@tonic-gate */ 19777c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(ghp->gh_depends, off1, gdp)) { 19787c478bd9Sstevel@tonic-gate if (gdp->gd_depend == clmp) 19797c478bd9Sstevel@tonic-gate break; 19807c478bd9Sstevel@tonic-gate } 19817c478bd9Sstevel@tonic-gate if ((gdp->gd_flags & GPD_ADDEPS) == 0) 19827c478bd9Sstevel@tonic-gate continue; 19837c478bd9Sstevel@tonic-gate 19847c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, nlmp, 19857c478bd9Sstevel@tonic-gate (GPD_AVAIL | GPD_ADDEPS))) == 0) 19867c478bd9Sstevel@tonic-gate return (0); 19877c478bd9Sstevel@tonic-gate 19887c478bd9Sstevel@tonic-gate /* 19897c478bd9Sstevel@tonic-gate * If this member already exists then its dependencies will 19907c478bd9Sstevel@tonic-gate * have already been processed. 19917c478bd9Sstevel@tonic-gate */ 19927c478bd9Sstevel@tonic-gate if (exist == ALE_EXISTS) 19937c478bd9Sstevel@tonic-gate continue; 19947c478bd9Sstevel@tonic-gate 19957c478bd9Sstevel@tonic-gate /* 19967c478bd9Sstevel@tonic-gate * If the object we've added has just been opened, it will not 19977c478bd9Sstevel@tonic-gate * yet have been processed for its dependencies, these will be 19987c478bd9Sstevel@tonic-gate * added on later calls to load_one(). If it doesn't have any 19997c478bd9Sstevel@tonic-gate * dependencies we're also done. 20007c478bd9Sstevel@tonic-gate */ 20017c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) || 20027c478bd9Sstevel@tonic-gate (DEPENDS(nlmp) == 0)) 20037c478bd9Sstevel@tonic-gate continue; 20047c478bd9Sstevel@tonic-gate 20057c478bd9Sstevel@tonic-gate /* 20067c478bd9Sstevel@tonic-gate * Otherwise, this object exists and has dependencies, so add 20077c478bd9Sstevel@tonic-gate * all of its dependencies to the handle were operating on. 20087c478bd9Sstevel@tonic-gate */ 20097c478bd9Sstevel@tonic-gate if (alist_append(&lmalp, &nlmp, sizeof (Rt_map *), 20107c478bd9Sstevel@tonic-gate AL_CNT_DEPCLCT) == 0) 20117c478bd9Sstevel@tonic-gate return (0); 20127c478bd9Sstevel@tonic-gate 20137c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(lmalp, off1, lmpp)) { 20147c478bd9Sstevel@tonic-gate Rt_map * dlmp1 = *lmpp; 20157c478bd9Sstevel@tonic-gate Aliste off2; 20167c478bd9Sstevel@tonic-gate Bnd_desc ** bdpp; 20177c478bd9Sstevel@tonic-gate 20187c478bd9Sstevel@tonic-gate /* 20197c478bd9Sstevel@tonic-gate * Add any dependencies of this dependency to the 20207c478bd9Sstevel@tonic-gate * dynamic dependency list so they can be further 20217c478bd9Sstevel@tonic-gate * processed. 20227c478bd9Sstevel@tonic-gate */ 20237c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(DEPENDS(dlmp1), off2, bdpp)) { 20247c478bd9Sstevel@tonic-gate Bnd_desc * bdp = *bdpp; 20257c478bd9Sstevel@tonic-gate Rt_map * dlmp2 = bdp->b_depend; 20267c478bd9Sstevel@tonic-gate 20277c478bd9Sstevel@tonic-gate if ((bdp->b_flags & BND_NEEDED) == 0) 20287c478bd9Sstevel@tonic-gate continue; 20297c478bd9Sstevel@tonic-gate 20307c478bd9Sstevel@tonic-gate if (alist_test(&lmalp, dlmp2, sizeof (Rt_map *), 20317c478bd9Sstevel@tonic-gate AL_CNT_DEPCLCT) == 0) { 20327c478bd9Sstevel@tonic-gate free(lmalp); 20337c478bd9Sstevel@tonic-gate return (0); 20347c478bd9Sstevel@tonic-gate } 20357c478bd9Sstevel@tonic-gate } 20367c478bd9Sstevel@tonic-gate 20377c478bd9Sstevel@tonic-gate if (nlmp == dlmp1) 20387c478bd9Sstevel@tonic-gate continue; 20397c478bd9Sstevel@tonic-gate 20407c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, dlmp1, 20417c478bd9Sstevel@tonic-gate (GPD_AVAIL | GPD_ADDEPS))) != 0) { 20427c478bd9Sstevel@tonic-gate if (exist == ALE_CREATE) 20437c478bd9Sstevel@tonic-gate (void) update_mode(dlmp1, MODE(dlmp1), 20447c478bd9Sstevel@tonic-gate nmode); 20457c478bd9Sstevel@tonic-gate continue; 20467c478bd9Sstevel@tonic-gate } 20477c478bd9Sstevel@tonic-gate free(lmalp); 20487c478bd9Sstevel@tonic-gate return (0); 20497c478bd9Sstevel@tonic-gate } 20507c478bd9Sstevel@tonic-gate free(lmalp); 20517c478bd9Sstevel@tonic-gate } 20527c478bd9Sstevel@tonic-gate return (1); 20537c478bd9Sstevel@tonic-gate } 20547c478bd9Sstevel@tonic-gate 20557c478bd9Sstevel@tonic-gate /* 20567c478bd9Sstevel@tonic-gate * The central routine for loading shared objects. Insures ldd() diagnostics, 20577c478bd9Sstevel@tonic-gate * handles and any other related additions are all done in one place. 20587c478bd9Sstevel@tonic-gate */ 20597c478bd9Sstevel@tonic-gate Rt_map * 20607c478bd9Sstevel@tonic-gate load_path(Lm_list *lml, Aliste lmco, const char *name, Rt_map *clmp, 20617c478bd9Sstevel@tonic-gate int nmode, uint_t flags, Grp_hdl ** hdl, Fdesc *fdp, Rej_desc *rej) 20627c478bd9Sstevel@tonic-gate { 20637c478bd9Sstevel@tonic-gate Rt_map *nlmp; 20647c478bd9Sstevel@tonic-gate 20657c478bd9Sstevel@tonic-gate if ((nmode & RTLD_NOLOAD) == 0) { 20667c478bd9Sstevel@tonic-gate /* 20677c478bd9Sstevel@tonic-gate * If this isn't a noload request attempt to load the file. 20687c478bd9Sstevel@tonic-gate */ 20697c478bd9Sstevel@tonic-gate if ((name = load_trace(lml, name, clmp)) == 0) 20707c478bd9Sstevel@tonic-gate return (0); 20717c478bd9Sstevel@tonic-gate 20727c478bd9Sstevel@tonic-gate if ((nlmp = load_so(lml, lmco, name, clmp, flags, 20737c478bd9Sstevel@tonic-gate fdp, rej)) == 0) 20747c478bd9Sstevel@tonic-gate return (0); 20757c478bd9Sstevel@tonic-gate 20767c478bd9Sstevel@tonic-gate /* 20777c478bd9Sstevel@tonic-gate * If we've loaded a library which identifies itself as not 20787c478bd9Sstevel@tonic-gate * being dlopen()'able catch it here. Let non-dlopen()'able 20797c478bd9Sstevel@tonic-gate * objects through under RTLD_CONFGEN as they're only being 20807c478bd9Sstevel@tonic-gate * mapped to be dldump()'ed. 20817c478bd9Sstevel@tonic-gate */ 20827c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_APPLIC) && ((FLAGS(nlmp) & 20837c478bd9Sstevel@tonic-gate (FLG_RT_NOOPEN | FLG_RT_RELOCED)) == FLG_RT_NOOPEN) && 20847c478bd9Sstevel@tonic-gate ((nmode & RTLD_CONFGEN) == 0)) { 20857c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 20867c478bd9Sstevel@tonic-gate 20877c478bd9Sstevel@tonic-gate _rej.rej_name = name; 20887c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 20897c478bd9Sstevel@tonic-gate _rej.rej_str = MSG_INTL(MSG_GEN_NOOPEN); 20907c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_rejected(&_rej)); 20917c478bd9Sstevel@tonic-gate rejection_inherit(rej, &_rej, fdp); 20927c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 20937c478bd9Sstevel@tonic-gate return (0); 20947c478bd9Sstevel@tonic-gate } 20957c478bd9Sstevel@tonic-gate } else { 20967c478bd9Sstevel@tonic-gate /* 20977c478bd9Sstevel@tonic-gate * If it's a NOLOAD request - check to see if the object 20987c478bd9Sstevel@tonic-gate * has already been loaded. 20997c478bd9Sstevel@tonic-gate */ 21007c478bd9Sstevel@tonic-gate /* LINTED */ 21017c478bd9Sstevel@tonic-gate if ((nlmp = is_so_loaded(lml, name, 0)) || 21027c478bd9Sstevel@tonic-gate (nlmp = is_so_loaded(lml, name, 1))) { 21037c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_VERBOSE) && 21047c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 21057c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, 21067c478bd9Sstevel@tonic-gate NAME(clmp)); 21077c478bd9Sstevel@tonic-gate if (*name == '/') 21087c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 21097c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 21107c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 21117c478bd9Sstevel@tonic-gate else 21127c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 21137c478bd9Sstevel@tonic-gate name, NAME(nlmp), 21147c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 21157c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 21167c478bd9Sstevel@tonic-gate } 21177c478bd9Sstevel@tonic-gate } else { 21187c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 21197c478bd9Sstevel@tonic-gate 21207c478bd9Sstevel@tonic-gate _rej.rej_name = name; 21217c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 21227c478bd9Sstevel@tonic-gate _rej.rej_str = strerror(ENOENT); 21237c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_rejected(&_rej)); 21247c478bd9Sstevel@tonic-gate rejection_inherit(rej, &_rej, 0); 21257c478bd9Sstevel@tonic-gate return (0); 21267c478bd9Sstevel@tonic-gate } 21277c478bd9Sstevel@tonic-gate } 21287c478bd9Sstevel@tonic-gate 21297c478bd9Sstevel@tonic-gate /* 21307c478bd9Sstevel@tonic-gate * Finish processing this loaded object. 21317c478bd9Sstevel@tonic-gate */ 2132390b98b5Srie if (load_finish(lml, name, clmp, nmode, flags, hdl, nlmp) == 0) { 2133390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 2134390b98b5Srie 2135390b98b5Srie /* 2136390b98b5Srie * If this object has already been analyzed, then it is in use, 2137390b98b5Srie * so even though this operation has failed, it should not be 2138390b98b5Srie * torn down. 2139390b98b5Srie */ 2140390b98b5Srie if ((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) 2141390b98b5Srie remove_so(lml, nlmp); 2142390b98b5Srie return (0); 2143390b98b5Srie } 21447c478bd9Sstevel@tonic-gate 21457c478bd9Sstevel@tonic-gate /* 2146390b98b5Srie * If this object is new, and we're being audited, tell the audit 2147390b98b5Srie * library of the file we've just opened. Note, if the new link-map 2148390b98b5Srie * requires local auditing of its dependencies we also register its 2149390b98b5Srie * opening. 21507c478bd9Sstevel@tonic-gate */ 2151390b98b5Srie if (FLAGS(nlmp) & FLG_RT_NEWLOAD) { 2152390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 2153390b98b5Srie 2154390b98b5Srie if (((lml->lm_tflags | FLAGS1(clmp) | FLAGS1(nlmp)) & 2155390b98b5Srie LML_TFLG_AUD_MASK) && (((lml->lm_flags | 2156390b98b5Srie LIST(clmp)->lm_flags) & LML_FLG_NOAUDIT) == 0)) { 2157390b98b5Srie if (audit_objopen(clmp, nlmp) == 0) { 2158390b98b5Srie remove_so(lml, nlmp); 2159390b98b5Srie return (0); 2160390b98b5Srie } 2161390b98b5Srie } 2162390b98b5Srie } 2163390b98b5Srie return (nlmp); 21647c478bd9Sstevel@tonic-gate } 21657c478bd9Sstevel@tonic-gate 21667c478bd9Sstevel@tonic-gate /* 21677c478bd9Sstevel@tonic-gate * Load one object from a possible list of objects. Typically, for requests 21687c478bd9Sstevel@tonic-gate * such as NEEDED's, only one object is specified. However, this object could 21697c478bd9Sstevel@tonic-gate * be specified using $ISALIST or $HWCAP, in which case only the first object 21707c478bd9Sstevel@tonic-gate * that can be loaded is used (ie. the best). 21717c478bd9Sstevel@tonic-gate */ 21727c478bd9Sstevel@tonic-gate Rt_map * 21737c478bd9Sstevel@tonic-gate load_one(Lm_list *lml, Aliste lmco, Pnode *pnp, Rt_map *clmp, int mode, 21747c478bd9Sstevel@tonic-gate uint_t flags, Grp_hdl ** hdl) 21757c478bd9Sstevel@tonic-gate { 21767c478bd9Sstevel@tonic-gate Rej_desc rej = { 0 }; 21777c478bd9Sstevel@tonic-gate Pnode *tpnp; 21787c478bd9Sstevel@tonic-gate const char *name; 21797c478bd9Sstevel@tonic-gate Rt_map *tlmp; 21807c478bd9Sstevel@tonic-gate 21817c478bd9Sstevel@tonic-gate for (tpnp = pnp; tpnp && tpnp->p_name; tpnp = tpnp->p_next) { 21827c478bd9Sstevel@tonic-gate /* 21837c478bd9Sstevel@tonic-gate * A Hardware capabilities requirement can itself expand into 21847c478bd9Sstevel@tonic-gate * a number of candidates. 21857c478bd9Sstevel@tonic-gate */ 21867c478bd9Sstevel@tonic-gate if (tpnp->p_orig & PN_TKN_HWCAP) { 21877c478bd9Sstevel@tonic-gate if ((tlmp = load_hwcap(lml, lmco, tpnp->p_name, clmp, 21887c478bd9Sstevel@tonic-gate mode, (flags | FLG_RT_HWCAP), hdl, &rej)) != 0) { 21897c478bd9Sstevel@tonic-gate remove_rej(&rej); 21907c478bd9Sstevel@tonic-gate return (tlmp); 21917c478bd9Sstevel@tonic-gate } 21927c478bd9Sstevel@tonic-gate } else { 21937c478bd9Sstevel@tonic-gate if ((tlmp = load_path(lml, lmco, tpnp->p_name, clmp, 21947c478bd9Sstevel@tonic-gate mode, flags, hdl, 0, &rej)) != 0) { 21957c478bd9Sstevel@tonic-gate remove_rej(&rej); 21967c478bd9Sstevel@tonic-gate return (tlmp); 21977c478bd9Sstevel@tonic-gate } 21987c478bd9Sstevel@tonic-gate } 21997c478bd9Sstevel@tonic-gate } 22007c478bd9Sstevel@tonic-gate 22017c478bd9Sstevel@tonic-gate /* 22027c478bd9Sstevel@tonic-gate * If this pathname originated from an expanded token, use the original 22037c478bd9Sstevel@tonic-gate * for any diagnostic output. 22047c478bd9Sstevel@tonic-gate */ 22057c478bd9Sstevel@tonic-gate if ((name = pnp->p_oname) == 0) 22067c478bd9Sstevel@tonic-gate name = pnp->p_name; 22077c478bd9Sstevel@tonic-gate 22087c478bd9Sstevel@tonic-gate file_notfound(lml, name, clmp, flags, &rej); 22097c478bd9Sstevel@tonic-gate remove_rej(&rej); 22107c478bd9Sstevel@tonic-gate return (0); 22117c478bd9Sstevel@tonic-gate } 22127c478bd9Sstevel@tonic-gate 22137c478bd9Sstevel@tonic-gate /* 22147c478bd9Sstevel@tonic-gate * While processing direct or group bindings, determine whether the object to 22157c478bd9Sstevel@tonic-gate * which we've bound can be interposed upon. In this context, copy relocations 22167c478bd9Sstevel@tonic-gate * are a form of interposition. 22177c478bd9Sstevel@tonic-gate */ 22187c478bd9Sstevel@tonic-gate static Sym * 22197c478bd9Sstevel@tonic-gate lookup_sym_interpose(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Lm_list * lml, 22207c478bd9Sstevel@tonic-gate Sym * sym) 22217c478bd9Sstevel@tonic-gate { 22227c478bd9Sstevel@tonic-gate Rt_map * lmp; 22237c478bd9Sstevel@tonic-gate Slookup sl; 22247c478bd9Sstevel@tonic-gate 22257c478bd9Sstevel@tonic-gate /* 22267c478bd9Sstevel@tonic-gate * If we've bound to a copy relocation definition then we need to assign 22277c478bd9Sstevel@tonic-gate * this binding to the original copy reference. Fabricate an inter- 22287c478bd9Sstevel@tonic-gate * position diagnostic, as this is a legitimate form of interposition. 22297c478bd9Sstevel@tonic-gate */ 22307c478bd9Sstevel@tonic-gate if (FLAGS1(*dlmp) & FL1_RT_COPYTOOK) { 22317c478bd9Sstevel@tonic-gate Rel_copy *rcp; 22327c478bd9Sstevel@tonic-gate Aliste off; 22337c478bd9Sstevel@tonic-gate 22347c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(COPY(*dlmp), off, rcp)) { 22357c478bd9Sstevel@tonic-gate if ((sym == rcp->r_dsym) || (sym->st_value && 22367c478bd9Sstevel@tonic-gate (sym->st_value == rcp->r_dsym->st_value))) { 22377c478bd9Sstevel@tonic-gate *dlmp = rcp->r_rlmp; 22387c478bd9Sstevel@tonic-gate *binfo |= 22397c478bd9Sstevel@tonic-gate (DBG_BINFO_INTERPOSE | DBG_BINFO_COPYREF); 22407c478bd9Sstevel@tonic-gate return (rcp->r_rsym); 22417c478bd9Sstevel@tonic-gate } 22427c478bd9Sstevel@tonic-gate } 22437c478bd9Sstevel@tonic-gate } 22447c478bd9Sstevel@tonic-gate 22457c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_INTRPOSE) == 0) 22467c478bd9Sstevel@tonic-gate return ((Sym *)0); 22477c478bd9Sstevel@tonic-gate 22487c478bd9Sstevel@tonic-gate /* 22497c478bd9Sstevel@tonic-gate * Traverse the list of known interposers to determine whether any 22507c478bd9Sstevel@tonic-gate * offer the same symbol. Note, the head of the link-map could be 22517c478bd9Sstevel@tonic-gate * identified as an interposer. If it is, make sure we only look for 22527c478bd9Sstevel@tonic-gate * symbol definitions. Otherwise, skip the head of the link-map, so 22537c478bd9Sstevel@tonic-gate * that we don't bind to any .plt references, or copy-relocations 22547c478bd9Sstevel@tonic-gate * unintentionally. 22557c478bd9Sstevel@tonic-gate */ 22567c478bd9Sstevel@tonic-gate lmp = lml->lm_head; 22577c478bd9Sstevel@tonic-gate sl = *slp; 22587c478bd9Sstevel@tonic-gate if (((FLAGS(lmp) & FLG_RT_INTRPOSE) == 0) || (sl.sl_flags & LKUP_COPY)) 22597c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(lmp); 22607c478bd9Sstevel@tonic-gate else 22617c478bd9Sstevel@tonic-gate sl.sl_flags &= ~LKUP_SPEC; 22627c478bd9Sstevel@tonic-gate 22637c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 22647c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_DELETE) 22657c478bd9Sstevel@tonic-gate continue; 22667c478bd9Sstevel@tonic-gate if ((FLAGS(lmp) & FLG_RT_INTRPOSE) == 0) 22677c478bd9Sstevel@tonic-gate break; 22687c478bd9Sstevel@tonic-gate 22697c478bd9Sstevel@tonic-gate if (callable(lmp, *dlmp, 0)) { 22707c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 22717c478bd9Sstevel@tonic-gate if (sym = SYMINTP(lmp)(&sl, dlmp, binfo)) { 22727c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_INTERPOSE; 22737c478bd9Sstevel@tonic-gate return (sym); 22747c478bd9Sstevel@tonic-gate } 22757c478bd9Sstevel@tonic-gate } 22767c478bd9Sstevel@tonic-gate } 22777c478bd9Sstevel@tonic-gate return ((Sym *)0); 22787c478bd9Sstevel@tonic-gate } 22797c478bd9Sstevel@tonic-gate 22807c478bd9Sstevel@tonic-gate /* 22817c478bd9Sstevel@tonic-gate * If an object specifies direct bindings (it contains a syminfo structure 22827c478bd9Sstevel@tonic-gate * describing where each binding was established during link-editing, and the 22837c478bd9Sstevel@tonic-gate * object was built -Bdirect), then look for the symbol in the specific object. 22847c478bd9Sstevel@tonic-gate */ 22857c478bd9Sstevel@tonic-gate static Sym * 22867c478bd9Sstevel@tonic-gate lookup_sym_direct(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Syminfo *sip, 22877c478bd9Sstevel@tonic-gate Rt_map *lmp) 22887c478bd9Sstevel@tonic-gate { 22897c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 22907c478bd9Sstevel@tonic-gate Sym *sym; 22917c478bd9Sstevel@tonic-gate Slookup sl; 22927c478bd9Sstevel@tonic-gate 22937c478bd9Sstevel@tonic-gate /* 22947c478bd9Sstevel@tonic-gate * If a direct binding resolves to the definition of a copy relocated 22957c478bd9Sstevel@tonic-gate * variable, it must be redirected to the copy (in the executable) that 22967c478bd9Sstevel@tonic-gate * will eventually be made. Typically, this redirection occurs in 22977c478bd9Sstevel@tonic-gate * lookup_sym_interpose(). But, there's an edge condition. If a 22987c478bd9Sstevel@tonic-gate * directly bound executable contains pic code, there may be a 22997c478bd9Sstevel@tonic-gate * reference to a definition that will eventually have a copy made. 23007c478bd9Sstevel@tonic-gate * However, this copy relocation may not yet have occurred, because 23017c478bd9Sstevel@tonic-gate * the relocation making this reference comes before the relocation 23027c478bd9Sstevel@tonic-gate * that will create the copy. 23037c478bd9Sstevel@tonic-gate * Under direct bindings, the syminfo indicates that a copy will be 23047c478bd9Sstevel@tonic-gate * taken (SYMINFO_FLG_COPY). This can only be set in an executable. 23057c478bd9Sstevel@tonic-gate * Thus, the caller must be the executable, so bind to the destination 23067c478bd9Sstevel@tonic-gate * of the copy within the executable. 23077c478bd9Sstevel@tonic-gate */ 23087c478bd9Sstevel@tonic-gate if (((slp->sl_flags & LKUP_COPY) == 0) && 23097c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_COPY)) { 23107c478bd9Sstevel@tonic-gate 23117c478bd9Sstevel@tonic-gate slp->sl_imap = LIST(clmp)->lm_head; 23127c478bd9Sstevel@tonic-gate if (sym = SYMINTP(clmp)(slp, dlmp, binfo)) 23137c478bd9Sstevel@tonic-gate *binfo |= (DBG_BINFO_DIRECT | DBG_BINFO_COPYREF); 23147c478bd9Sstevel@tonic-gate return (sym); 23157c478bd9Sstevel@tonic-gate } 23167c478bd9Sstevel@tonic-gate 23177c478bd9Sstevel@tonic-gate /* 23187c478bd9Sstevel@tonic-gate * If we need to direct bind to our parent start looking in each caller 23197c478bd9Sstevel@tonic-gate * link map. 23207c478bd9Sstevel@tonic-gate */ 23217c478bd9Sstevel@tonic-gate sl = *slp; 23227c478bd9Sstevel@tonic-gate sl.sl_flags |= LKUP_DIRECT; 23237c478bd9Sstevel@tonic-gate sym = 0; 23247c478bd9Sstevel@tonic-gate 23257c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_PARENT) { 23267c478bd9Sstevel@tonic-gate Aliste off; 23277c478bd9Sstevel@tonic-gate Bnd_desc ** bdpp; 23287c478bd9Sstevel@tonic-gate 23297c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(CALLERS(clmp), off, bdpp)) { 23307c478bd9Sstevel@tonic-gate sl.sl_imap = lmp = (*bdpp)->b_caller; 23317c478bd9Sstevel@tonic-gate if ((sym = SYMINTP(lmp)(&sl, dlmp, binfo)) != 0) 23327c478bd9Sstevel@tonic-gate break; 23337c478bd9Sstevel@tonic-gate } 23347c478bd9Sstevel@tonic-gate } else { 23357c478bd9Sstevel@tonic-gate /* 23367c478bd9Sstevel@tonic-gate * If we need to direct bind to anything else look in the 23377c478bd9Sstevel@tonic-gate * link map associated with this symbol reference. 23387c478bd9Sstevel@tonic-gate */ 23397c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_SELF) 23407c478bd9Sstevel@tonic-gate sl.sl_imap = lmp = clmp; 23417c478bd9Sstevel@tonic-gate else 23427c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 23437c478bd9Sstevel@tonic-gate 23447c478bd9Sstevel@tonic-gate if (lmp) 23457c478bd9Sstevel@tonic-gate sym = SYMINTP(lmp)(&sl, dlmp, binfo); 23467c478bd9Sstevel@tonic-gate } 23477c478bd9Sstevel@tonic-gate 23487c478bd9Sstevel@tonic-gate if (sym) 23497c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_DIRECT; 23507c478bd9Sstevel@tonic-gate 23517c478bd9Sstevel@tonic-gate /* 23527c478bd9Sstevel@tonic-gate * If we've bound to an object, determine whether that object can be 23537c478bd9Sstevel@tonic-gate * interposed upon for this symbol. 23547c478bd9Sstevel@tonic-gate */ 23557c478bd9Sstevel@tonic-gate if (sym && (LIST(*dlmp)->lm_head != *dlmp) && 23567c478bd9Sstevel@tonic-gate (LIST(*dlmp) == LIST(clmp))) { 23577c478bd9Sstevel@tonic-gate Sym * isym; 23587c478bd9Sstevel@tonic-gate 23597c478bd9Sstevel@tonic-gate if ((isym = lookup_sym_interpose(slp, dlmp, binfo, 23607c478bd9Sstevel@tonic-gate LIST(*dlmp), sym)) != 0) 23617c478bd9Sstevel@tonic-gate return (isym); 23627c478bd9Sstevel@tonic-gate } 23637c478bd9Sstevel@tonic-gate 23647c478bd9Sstevel@tonic-gate return (sym); 23657c478bd9Sstevel@tonic-gate } 23667c478bd9Sstevel@tonic-gate 23677c478bd9Sstevel@tonic-gate static Sym * 23687c478bd9Sstevel@tonic-gate _lookup_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo, 23697c478bd9Sstevel@tonic-gate Aliste off) 23707c478bd9Sstevel@tonic-gate { 23717c478bd9Sstevel@tonic-gate Rt_map *lmp; 23727c478bd9Sstevel@tonic-gate 23737c478bd9Sstevel@tonic-gate /* 23747c478bd9Sstevel@tonic-gate * Copy relocations should start their search after the head of the 23757c478bd9Sstevel@tonic-gate * main link-map control list. 23767c478bd9Sstevel@tonic-gate */ 23777c478bd9Sstevel@tonic-gate if ((off == ALO_DATA) && (slp->sl_flags & LKUP_COPY) && ilmp) 23787c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(ilmp); 23797c478bd9Sstevel@tonic-gate else 23807c478bd9Sstevel@tonic-gate lmp = ilmp; 23817c478bd9Sstevel@tonic-gate 23827c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 23837c478bd9Sstevel@tonic-gate if (callable(slp->sl_cmap, lmp, 0)) { 23847c478bd9Sstevel@tonic-gate Sym *sym; 23857c478bd9Sstevel@tonic-gate 23867c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 23877c478bd9Sstevel@tonic-gate if ((sym = SYMINTP(lmp)(slp, dlmp, binfo)) != 0) 23887c478bd9Sstevel@tonic-gate return (sym); 23897c478bd9Sstevel@tonic-gate } 23907c478bd9Sstevel@tonic-gate } 23917c478bd9Sstevel@tonic-gate return (0); 23927c478bd9Sstevel@tonic-gate } 23937c478bd9Sstevel@tonic-gate 23947c478bd9Sstevel@tonic-gate static Sym * 23957c478bd9Sstevel@tonic-gate _lazy_find_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo) 23967c478bd9Sstevel@tonic-gate { 23977c478bd9Sstevel@tonic-gate Rt_map *lmp; 23987c478bd9Sstevel@tonic-gate 23997c478bd9Sstevel@tonic-gate for (lmp = ilmp; lmp; lmp = (Rt_map *)NEXT(lmp)) { 24007c478bd9Sstevel@tonic-gate if (LAZY(lmp) == 0) 24017c478bd9Sstevel@tonic-gate continue; 24027c478bd9Sstevel@tonic-gate if (callable(slp->sl_cmap, lmp, 0)) { 24037c478bd9Sstevel@tonic-gate Sym *sym; 24047c478bd9Sstevel@tonic-gate 24057c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 24067c478bd9Sstevel@tonic-gate if ((sym = elf_lazy_find_sym(slp, dlmp, binfo)) != 0) 24077c478bd9Sstevel@tonic-gate return (sym); 24087c478bd9Sstevel@tonic-gate } 24097c478bd9Sstevel@tonic-gate } 24107c478bd9Sstevel@tonic-gate return (0); 24117c478bd9Sstevel@tonic-gate } 24127c478bd9Sstevel@tonic-gate 24137c478bd9Sstevel@tonic-gate /* 24147c478bd9Sstevel@tonic-gate * Symbol lookup routine. Takes an ELF symbol name, and a list of link maps to 24157c478bd9Sstevel@tonic-gate * search (if the flag indicates LKUP_FIRST only the first link map of the list 24167c478bd9Sstevel@tonic-gate * is searched ie. we've been called from dlsym()). 24177c478bd9Sstevel@tonic-gate * If successful, return a pointer to the symbol table entry and a pointer to 24187c478bd9Sstevel@tonic-gate * the link map of the enclosing object. Else return a null pointer. 24197c478bd9Sstevel@tonic-gate * 24207c478bd9Sstevel@tonic-gate * To improve elf performance, we first compute the elf hash value and pass 24217c478bd9Sstevel@tonic-gate * it to each find_sym() routine. The elf function will use this value to 24227c478bd9Sstevel@tonic-gate * locate the symbol, the a.out function will simply ignore it. 24237c478bd9Sstevel@tonic-gate */ 24247c478bd9Sstevel@tonic-gate Sym * 24257c478bd9Sstevel@tonic-gate lookup_sym(Slookup *slp, Rt_map **dlmp, uint_t *binfo) 24267c478bd9Sstevel@tonic-gate { 24277c478bd9Sstevel@tonic-gate const char *name = slp->sl_name; 24287c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 24297c478bd9Sstevel@tonic-gate Rt_map *ilmp = slp->sl_imap, *lmp; 24307c478bd9Sstevel@tonic-gate uint_t flags = slp->sl_flags; 24317c478bd9Sstevel@tonic-gate ulong_t rsymndx; 24327c478bd9Sstevel@tonic-gate Sym *sym = 0; 24337c478bd9Sstevel@tonic-gate Syminfo *sip; 24347c478bd9Sstevel@tonic-gate Slookup sl; 24357c478bd9Sstevel@tonic-gate 24367c478bd9Sstevel@tonic-gate if (slp->sl_hash == 0) 24377c478bd9Sstevel@tonic-gate slp->sl_hash = elf_hash(name); 24387c478bd9Sstevel@tonic-gate *binfo = 0; 24397c478bd9Sstevel@tonic-gate 24407c478bd9Sstevel@tonic-gate /* 24417c478bd9Sstevel@tonic-gate * Search the initial link map for the required symbol (this category is 24427c478bd9Sstevel@tonic-gate * selected by dlsym(), where individual link maps are searched for a 24437c478bd9Sstevel@tonic-gate * required symbol. Therefore, we know we have permission to look at 24447c478bd9Sstevel@tonic-gate * the link map). 24457c478bd9Sstevel@tonic-gate */ 24467c478bd9Sstevel@tonic-gate if (flags & LKUP_FIRST) 24477c478bd9Sstevel@tonic-gate return (SYMINTP(ilmp)(slp, dlmp, binfo)); 24487c478bd9Sstevel@tonic-gate 24497c478bd9Sstevel@tonic-gate /* 24507c478bd9Sstevel@tonic-gate * Determine whether this lookup can be satisfied by an objects direct, 24517c478bd9Sstevel@tonic-gate * or lazy binding information. This is triggered by a relocation from 24527c478bd9Sstevel@tonic-gate * the object (hence rsymndx is set). 24537c478bd9Sstevel@tonic-gate */ 24547c478bd9Sstevel@tonic-gate if (((rsymndx = slp->sl_rsymndx) != 0) && 24557c478bd9Sstevel@tonic-gate ((sip = SYMINFO(clmp)) != 0)) { 24567c478bd9Sstevel@tonic-gate 24577c478bd9Sstevel@tonic-gate /* 24587c478bd9Sstevel@tonic-gate * Find the corresponding Syminfo entry for the original 24597c478bd9Sstevel@tonic-gate * referencing symbol. 24607c478bd9Sstevel@tonic-gate */ 24617c478bd9Sstevel@tonic-gate /* LINTED */ 24627c478bd9Sstevel@tonic-gate sip = (Syminfo *)((char *)sip + (rsymndx * SYMINENT(clmp))); 24637c478bd9Sstevel@tonic-gate 24647c478bd9Sstevel@tonic-gate /* 24657c478bd9Sstevel@tonic-gate * If the symbol information indicates a direct binding, 24667c478bd9Sstevel@tonic-gate * determine the link map that is required to satisfy the 24677c478bd9Sstevel@tonic-gate * binding. Note, if the dependency can not be found, but a 24687c478bd9Sstevel@tonic-gate * direct binding isn't required, we will still fall through 24697c478bd9Sstevel@tonic-gate * to perform any default symbol search. 24707c478bd9Sstevel@tonic-gate */ 24717c478bd9Sstevel@tonic-gate if (sip->si_flags & SYMINFO_FLG_DIRECT) { 24727c478bd9Sstevel@tonic-gate uint_t bound = sip->si_boundto; 24737c478bd9Sstevel@tonic-gate 24747c478bd9Sstevel@tonic-gate lmp = 0; 24757c478bd9Sstevel@tonic-gate if (bound < SYMINFO_BT_LOWRESERVE) 24767c478bd9Sstevel@tonic-gate lmp = elf_lazy_load(clmp, bound, name); 24777c478bd9Sstevel@tonic-gate 24787c478bd9Sstevel@tonic-gate /* 24797c478bd9Sstevel@tonic-gate * If direct bindings have been disabled, and this isn't 24807c478bd9Sstevel@tonic-gate * a translator, skip any direct binding now that we've 24817c478bd9Sstevel@tonic-gate * insured the resolving object has been loaded. 24827c478bd9Sstevel@tonic-gate * 24837c478bd9Sstevel@tonic-gate * If we need to direct bind to anything, we look in 24847c478bd9Sstevel@tonic-gate * ourselves, our parent, or in the link map we've just 24857c478bd9Sstevel@tonic-gate * loaded. Otherwise, even though we may have lazily 24867c478bd9Sstevel@tonic-gate * loaded an object we still continue to search for 24877c478bd9Sstevel@tonic-gate * symbols from the head of the link map list. 24887c478bd9Sstevel@tonic-gate */ 24897c478bd9Sstevel@tonic-gate if (((FLAGS(clmp) & FLG_RT_TRANS) || 24907c478bd9Sstevel@tonic-gate (!(LIST(clmp)->lm_tflags & LML_TFLG_NODIRECT))) && 24917c478bd9Sstevel@tonic-gate ((FLAGS(clmp) & FLG_RT_DIRECT) || 24927c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_DIRECTBIND))) { 24937c478bd9Sstevel@tonic-gate sym = lookup_sym_direct(slp, dlmp, binfo, 24947c478bd9Sstevel@tonic-gate sip, lmp); 24957c478bd9Sstevel@tonic-gate 24967c478bd9Sstevel@tonic-gate /* 24977c478bd9Sstevel@tonic-gate * If this direct binding has been disabled 24987c478bd9Sstevel@tonic-gate * (presumably because the symbol definition has 24997c478bd9Sstevel@tonic-gate * been changed since the referring object was 25007c478bd9Sstevel@tonic-gate * built), fall back to a standard symbol 25017c478bd9Sstevel@tonic-gate * search. 25027c478bd9Sstevel@tonic-gate */ 25037c478bd9Sstevel@tonic-gate if ((*binfo & BINFO_DIRECTDIS) == 0) 25047c478bd9Sstevel@tonic-gate return (sym); 25057c478bd9Sstevel@tonic-gate } 25067c478bd9Sstevel@tonic-gate } 25077c478bd9Sstevel@tonic-gate } 25087c478bd9Sstevel@tonic-gate 25097c478bd9Sstevel@tonic-gate sl = *slp; 25107c478bd9Sstevel@tonic-gate 25117c478bd9Sstevel@tonic-gate /* 25127c478bd9Sstevel@tonic-gate * If the referencing object has the DF_SYMBOLIC flag set, look in the 25137c478bd9Sstevel@tonic-gate * referencing object for the symbol first. Failing that, fall back to 25147c478bd9Sstevel@tonic-gate * our generic search. 25157c478bd9Sstevel@tonic-gate */ 25167c478bd9Sstevel@tonic-gate if (FLAGS1(clmp) & FL1_RT_SYMBOLIC) { 25177c478bd9Sstevel@tonic-gate sl.sl_imap = clmp; 25187c478bd9Sstevel@tonic-gate if (sym = SYMINTP(clmp)(&sl, dlmp, binfo)) 25197c478bd9Sstevel@tonic-gate return (sym); 25207c478bd9Sstevel@tonic-gate } 25217c478bd9Sstevel@tonic-gate 25227c478bd9Sstevel@tonic-gate /* 25237c478bd9Sstevel@tonic-gate * If this lookup originates from a standard relocation, then traverse 25247c478bd9Sstevel@tonic-gate * all link-map lists inspecting any object that is available to this 25257c478bd9Sstevel@tonic-gate * caller. Otherwise, traverse the link-map list associate with the 25267c478bd9Sstevel@tonic-gate * caller. 25277c478bd9Sstevel@tonic-gate */ 25287c478bd9Sstevel@tonic-gate if (flags & LKUP_ALLCNTLIST) { 25297c478bd9Sstevel@tonic-gate Aliste off; 25307c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 25317c478bd9Sstevel@tonic-gate 25327c478bd9Sstevel@tonic-gate sym = 0; 25337c478bd9Sstevel@tonic-gate 25347c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(LIST(clmp)->lm_lists, off, lmc)) { 25357c478bd9Sstevel@tonic-gate if ((sym = _lookup_sym(lmc->lc_head, &sl, dlmp, 25367c478bd9Sstevel@tonic-gate binfo, off)) != 0) 25377c478bd9Sstevel@tonic-gate break; 25387c478bd9Sstevel@tonic-gate } 25397c478bd9Sstevel@tonic-gate } else 25407c478bd9Sstevel@tonic-gate sym = _lookup_sym(ilmp, &sl, dlmp, binfo, ALO_DATA); 25417c478bd9Sstevel@tonic-gate 25427c478bd9Sstevel@tonic-gate /* 25437c478bd9Sstevel@tonic-gate * To allow transitioning into a world of lazy loading dependencies see 25447c478bd9Sstevel@tonic-gate * if this link map contains objects that have lazy dependencies still 25457c478bd9Sstevel@tonic-gate * outstanding. If so, and we haven't been able to locate a non-weak 25467c478bd9Sstevel@tonic-gate * symbol reference, start bringing in any lazy dependencies to see if 25477c478bd9Sstevel@tonic-gate * the reference can be satisfied. Use of dlsym(RTLD_PROBE) sets the 25487c478bd9Sstevel@tonic-gate * LKUP_NOFALBACK flag, and this flag disables this fall back. 25497c478bd9Sstevel@tonic-gate */ 25507c478bd9Sstevel@tonic-gate if ((sym == 0) && ((sl.sl_flags & LKUP_NOFALBACK) == 0)) { 25517c478bd9Sstevel@tonic-gate if ((lmp = ilmp) == 0) 25527c478bd9Sstevel@tonic-gate lmp = LIST(clmp)->lm_head; 25537c478bd9Sstevel@tonic-gate if ((flags & LKUP_WEAK) || (LIST(lmp)->lm_lazy == 0)) 25547c478bd9Sstevel@tonic-gate return ((Sym *)0); 25557c478bd9Sstevel@tonic-gate 25567c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_syms_lazy_rescan(name)); 25577c478bd9Sstevel@tonic-gate 25587c478bd9Sstevel@tonic-gate /* 25597c478bd9Sstevel@tonic-gate * If this request originated from a dlsym(RTLD_NEXT) then start 25607c478bd9Sstevel@tonic-gate * looking for dependencies from the caller, otherwise use the 25617c478bd9Sstevel@tonic-gate * initial link-map. 25627c478bd9Sstevel@tonic-gate */ 25637c478bd9Sstevel@tonic-gate if (flags & LKUP_NEXT) 25647c478bd9Sstevel@tonic-gate sym = _lazy_find_sym(clmp, &sl, dlmp, binfo); 25657c478bd9Sstevel@tonic-gate else { 25667c478bd9Sstevel@tonic-gate Aliste off; 25677c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 25687c478bd9Sstevel@tonic-gate 25697c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(LIST(clmp)->lm_lists, off, lmc)) { 25707c478bd9Sstevel@tonic-gate sl.sl_flags |= LKUP_NOFALBACK; 25717c478bd9Sstevel@tonic-gate if ((sym = _lazy_find_sym(lmc->lc_head, &sl, 25727c478bd9Sstevel@tonic-gate dlmp, binfo)) != 0) 25737c478bd9Sstevel@tonic-gate break; 25747c478bd9Sstevel@tonic-gate } 25757c478bd9Sstevel@tonic-gate } 25767c478bd9Sstevel@tonic-gate } 25777c478bd9Sstevel@tonic-gate 25787c478bd9Sstevel@tonic-gate /* 25797c478bd9Sstevel@tonic-gate * If the caller is restricted to a symbol search within its group, 25807c478bd9Sstevel@tonic-gate * determine if it is necessary to follow a binding from outside of 25817c478bd9Sstevel@tonic-gate * the group. 25827c478bd9Sstevel@tonic-gate */ 25837c478bd9Sstevel@tonic-gate if (sym && ((MODE(clmp) & (RTLD_GROUP | RTLD_WORLD)) == RTLD_GROUP)) { 25847c478bd9Sstevel@tonic-gate Sym * isym; 25857c478bd9Sstevel@tonic-gate 25867c478bd9Sstevel@tonic-gate if ((isym = lookup_sym_interpose(slp, dlmp, binfo, LIST(*dlmp), 25877c478bd9Sstevel@tonic-gate sym)) != 0) 25887c478bd9Sstevel@tonic-gate return (isym); 25897c478bd9Sstevel@tonic-gate } 25907c478bd9Sstevel@tonic-gate return (sym); 25917c478bd9Sstevel@tonic-gate } 25927c478bd9Sstevel@tonic-gate 25937c478bd9Sstevel@tonic-gate /* 25947c478bd9Sstevel@tonic-gate * Associate a binding descriptor with a caller and its dependency, or update 25957c478bd9Sstevel@tonic-gate * an existing descriptor. 25967c478bd9Sstevel@tonic-gate */ 25977c478bd9Sstevel@tonic-gate int 25987c478bd9Sstevel@tonic-gate bind_one(Rt_map * clmp, Rt_map * dlmp, uint_t flags) 25997c478bd9Sstevel@tonic-gate { 26007c478bd9Sstevel@tonic-gate Bnd_desc ** bdpp, * bdp; 26017c478bd9Sstevel@tonic-gate Aliste off; 26027c478bd9Sstevel@tonic-gate int found = ALE_CREATE; 26037c478bd9Sstevel@tonic-gate 26047c478bd9Sstevel@tonic-gate /* 26057c478bd9Sstevel@tonic-gate * Determine whether a binding descriptor already exists between the 26067c478bd9Sstevel@tonic-gate * two objects. 26077c478bd9Sstevel@tonic-gate */ 26087c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(DEPENDS(clmp), off, bdpp)) { 26097c478bd9Sstevel@tonic-gate bdp = *bdpp; 26107c478bd9Sstevel@tonic-gate 26117c478bd9Sstevel@tonic-gate if (bdp->b_depend == dlmp) { 26127c478bd9Sstevel@tonic-gate found = ALE_EXISTS; 26137c478bd9Sstevel@tonic-gate break; 26147c478bd9Sstevel@tonic-gate } 26157c478bd9Sstevel@tonic-gate } 26167c478bd9Sstevel@tonic-gate 26177c478bd9Sstevel@tonic-gate if (found == ALE_CREATE) { 26187c478bd9Sstevel@tonic-gate /* 26197c478bd9Sstevel@tonic-gate * Create a new binding descriptor. 26207c478bd9Sstevel@tonic-gate */ 26217c478bd9Sstevel@tonic-gate if ((bdp = malloc(sizeof (Bnd_desc))) == 0) 26227c478bd9Sstevel@tonic-gate return (0); 26237c478bd9Sstevel@tonic-gate 26247c478bd9Sstevel@tonic-gate bdp->b_caller = clmp; 26257c478bd9Sstevel@tonic-gate bdp->b_depend = dlmp; 26267c478bd9Sstevel@tonic-gate bdp->b_flags = 0; 26277c478bd9Sstevel@tonic-gate 26287c478bd9Sstevel@tonic-gate /* 26297c478bd9Sstevel@tonic-gate * Append the binding descriptor to the caller and the 26307c478bd9Sstevel@tonic-gate * dependency. 26317c478bd9Sstevel@tonic-gate */ 26327c478bd9Sstevel@tonic-gate if (alist_append(&DEPENDS(clmp), &bdp, 26337c478bd9Sstevel@tonic-gate sizeof (Bnd_desc *), AL_CNT_DEPENDS) == 0) 26347c478bd9Sstevel@tonic-gate return (0); 26357c478bd9Sstevel@tonic-gate 26367c478bd9Sstevel@tonic-gate if (alist_append(&CALLERS(dlmp), &bdp, 26377c478bd9Sstevel@tonic-gate sizeof (Bnd_desc *), AL_CNT_CALLERS) == 0) 26387c478bd9Sstevel@tonic-gate return (0); 26397c478bd9Sstevel@tonic-gate } 26407c478bd9Sstevel@tonic-gate 26417c478bd9Sstevel@tonic-gate if ((found == ALE_CREATE) || ((bdp->b_flags & flags) != flags)) { 26427c478bd9Sstevel@tonic-gate bdp->b_flags |= flags; 26437c478bd9Sstevel@tonic-gate 26447c478bd9Sstevel@tonic-gate if (flags & BND_REFER) 26457c478bd9Sstevel@tonic-gate FLAGS1(dlmp) |= FL1_RT_USED; 26467c478bd9Sstevel@tonic-gate 26477c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_bind_entry(bdp)); 26487c478bd9Sstevel@tonic-gate } 26497c478bd9Sstevel@tonic-gate return (found); 26507c478bd9Sstevel@tonic-gate } 26517c478bd9Sstevel@tonic-gate 26527c478bd9Sstevel@tonic-gate /* 26537c478bd9Sstevel@tonic-gate * Cleanup after relocation processing. 26547c478bd9Sstevel@tonic-gate */ 26557c478bd9Sstevel@tonic-gate int 26567c478bd9Sstevel@tonic-gate relocate_finish(Rt_map *lmp, Alist *bound, int textrel, int ret) 26577c478bd9Sstevel@tonic-gate { 26587c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_reloc_run(NAME(lmp), 0, ret, DBG_REL_FINISH)); 26597c478bd9Sstevel@tonic-gate 26607c478bd9Sstevel@tonic-gate /* 26617c478bd9Sstevel@tonic-gate * Establish bindings to all objects that have been bound to. 26627c478bd9Sstevel@tonic-gate */ 26637c478bd9Sstevel@tonic-gate if (bound) { 26647c478bd9Sstevel@tonic-gate Aliste off; 26657c478bd9Sstevel@tonic-gate Rt_map **lmpp; 26667c478bd9Sstevel@tonic-gate 26677c478bd9Sstevel@tonic-gate if (ret) { 26687c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(bound, off, lmpp)) { 26697c478bd9Sstevel@tonic-gate if (bind_one(lmp, *lmpp, BND_REFER) == 0) { 26707c478bd9Sstevel@tonic-gate ret = 0; 26717c478bd9Sstevel@tonic-gate break; 26727c478bd9Sstevel@tonic-gate } 26737c478bd9Sstevel@tonic-gate } 26747c478bd9Sstevel@tonic-gate } 26757c478bd9Sstevel@tonic-gate free(bound); 26767c478bd9Sstevel@tonic-gate } 26777c478bd9Sstevel@tonic-gate 26787c478bd9Sstevel@tonic-gate /* 26797c478bd9Sstevel@tonic-gate * If we write enabled the text segment to perform these relocations 26807c478bd9Sstevel@tonic-gate * re-protect by disabling writes. 26817c478bd9Sstevel@tonic-gate */ 26827c478bd9Sstevel@tonic-gate if (textrel) 26837c478bd9Sstevel@tonic-gate (void) LM_SET_PROT(lmp)(lmp, 0); 26847c478bd9Sstevel@tonic-gate 26857c478bd9Sstevel@tonic-gate return (ret); 26867c478bd9Sstevel@tonic-gate } 2687