17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 55aefb655Srie * Common Development and Distribution License (the "License"). 65aefb655Srie * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 21fb1354edSrie 227c478bd9Sstevel@tonic-gate /* 237c478bd9Sstevel@tonic-gate * Copyright (c) 1988 AT&T 247c478bd9Sstevel@tonic-gate * All Rights Reserved 257c478bd9Sstevel@tonic-gate * 26*cce0e03bSab196087 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 277c478bd9Sstevel@tonic-gate * Use is subject to license terms. 287c478bd9Sstevel@tonic-gate */ 297c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 307c478bd9Sstevel@tonic-gate 317c478bd9Sstevel@tonic-gate #include "_synonyms.h" 327c478bd9Sstevel@tonic-gate 337c478bd9Sstevel@tonic-gate #include <string.h> 347c478bd9Sstevel@tonic-gate #include <stdio.h> 357c478bd9Sstevel@tonic-gate #include <unistd.h> 367c478bd9Sstevel@tonic-gate #include <sys/stat.h> 377c478bd9Sstevel@tonic-gate #include <sys/mman.h> 387c478bd9Sstevel@tonic-gate #include <fcntl.h> 397c478bd9Sstevel@tonic-gate #include <limits.h> 407c478bd9Sstevel@tonic-gate #include <dlfcn.h> 417c478bd9Sstevel@tonic-gate #include <errno.h> 427c478bd9Sstevel@tonic-gate #include <link.h> 435aefb655Srie #include <debug.h> 445aefb655Srie #include <conv.h> 457c478bd9Sstevel@tonic-gate #include "_rtld.h" 467c478bd9Sstevel@tonic-gate #include "_audit.h" 477c478bd9Sstevel@tonic-gate #include "_elf.h" 487c478bd9Sstevel@tonic-gate #include "msg.h" 497c478bd9Sstevel@tonic-gate 507c478bd9Sstevel@tonic-gate static Fct * vector[] = { 517c478bd9Sstevel@tonic-gate &elf_fct, 527c478bd9Sstevel@tonic-gate #ifdef A_OUT 537c478bd9Sstevel@tonic-gate &aout_fct, 547c478bd9Sstevel@tonic-gate #endif 557c478bd9Sstevel@tonic-gate 0 567c478bd9Sstevel@tonic-gate }; 577c478bd9Sstevel@tonic-gate 587c478bd9Sstevel@tonic-gate /* 597c478bd9Sstevel@tonic-gate * If a load filter flag is in effect, and this object is a filter, trigger the 607c478bd9Sstevel@tonic-gate * loading of all its filtees. The load filter flag is in effect when creating 617c478bd9Sstevel@tonic-gate * configuration files, or when under the control of ldd(1), or the LD_LOADFLTR 627c478bd9Sstevel@tonic-gate * environment variable is set, or this object was built with the -zloadfltr 637c478bd9Sstevel@tonic-gate * flag. Otherwise, filtee loading is deferred until triggered by a relocation. 647c478bd9Sstevel@tonic-gate */ 657c478bd9Sstevel@tonic-gate static void 667c478bd9Sstevel@tonic-gate load_filtees(Rt_map *lmp) 677c478bd9Sstevel@tonic-gate { 687c478bd9Sstevel@tonic-gate if ((FLAGS1(lmp) & MSK_RT_FILTER) && 697c478bd9Sstevel@tonic-gate ((FLAGS(lmp) & FLG_RT_LOADFLTR) || 707c478bd9Sstevel@tonic-gate (LIST(lmp)->lm_tflags & LML_TFLG_LOADFLTR))) { 717c478bd9Sstevel@tonic-gate Dyninfo * dip = DYNINFO(lmp); 727c478bd9Sstevel@tonic-gate uint_t cnt, max = DYNINFOCNT(lmp); 737c478bd9Sstevel@tonic-gate Slookup sl; 747c478bd9Sstevel@tonic-gate 757c478bd9Sstevel@tonic-gate sl.sl_name = 0; 767c478bd9Sstevel@tonic-gate sl.sl_hash = 0; 777c478bd9Sstevel@tonic-gate sl.sl_imap = sl.sl_cmap = lmp; 787c478bd9Sstevel@tonic-gate 797c478bd9Sstevel@tonic-gate for (cnt = 0; cnt < max; cnt++, dip++) { 807c478bd9Sstevel@tonic-gate if (((dip->di_flags & MSK_DI_FILTER) == 0) || 817c478bd9Sstevel@tonic-gate ((dip->di_flags & FLG_DI_AUXFLTR) && 827c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_NOAUXFLTR))) 837c478bd9Sstevel@tonic-gate continue; 847c478bd9Sstevel@tonic-gate (void) elf_lookup_filtee(&sl, 0, 0, cnt); 857c478bd9Sstevel@tonic-gate } 867c478bd9Sstevel@tonic-gate } 877c478bd9Sstevel@tonic-gate } 887c478bd9Sstevel@tonic-gate 897c478bd9Sstevel@tonic-gate /* 907c478bd9Sstevel@tonic-gate * Analyze one or more link-maps of a link map control list. This routine is 917c478bd9Sstevel@tonic-gate * called at startup to continue the processing of the main executable. It is 927c478bd9Sstevel@tonic-gate * also called each time a new set of objects are loaded, ie. from filters, 937c478bd9Sstevel@tonic-gate * lazy-loaded objects, or dlopen(). 947c478bd9Sstevel@tonic-gate * 957c478bd9Sstevel@tonic-gate * In each instance we traverse the link-map control list starting with the 967c478bd9Sstevel@tonic-gate * initial object. As dependencies are analyzed they are added to the link-map 977c478bd9Sstevel@tonic-gate * control list. Thus the list grows as we traverse it - this results in the 987c478bd9Sstevel@tonic-gate * breadth first ordering of all needed objects. 997c478bd9Sstevel@tonic-gate */ 1007c478bd9Sstevel@tonic-gate int 1017c478bd9Sstevel@tonic-gate analyze_lmc(Lm_list *lml, Aliste nlmco, Rt_map *nlmp) 1027c478bd9Sstevel@tonic-gate { 1037c478bd9Sstevel@tonic-gate Rt_map *lmp = nlmp; 1047c478bd9Sstevel@tonic-gate Lm_cntl *nlmc; 1057c478bd9Sstevel@tonic-gate int ret = 1; 1067c478bd9Sstevel@tonic-gate 1077c478bd9Sstevel@tonic-gate /* 1087c478bd9Sstevel@tonic-gate * If this link-map control list is being analyzed, return. The object 1097c478bd9Sstevel@tonic-gate * that has just been added will be picked up by the existing analysis 1107c478bd9Sstevel@tonic-gate * thread. Note, this is only really meaningful during process init- 1117c478bd9Sstevel@tonic-gate * ialization, as objects are added to the main link-map control list. 1127c478bd9Sstevel@tonic-gate * Following this initialization, each family of objects that are loaded 1137c478bd9Sstevel@tonic-gate * are added to a new link-map control list. 1147c478bd9Sstevel@tonic-gate */ 1157c478bd9Sstevel@tonic-gate /* LINTED */ 116*cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 1177c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_ANALYZING) 1187c478bd9Sstevel@tonic-gate return (1); 1197c478bd9Sstevel@tonic-gate 1207c478bd9Sstevel@tonic-gate /* 1217c478bd9Sstevel@tonic-gate * If this object doesn't belong to the present link-map control list 1227c478bd9Sstevel@tonic-gate * then it must already have been analyzed, or it is in the process of 1237c478bd9Sstevel@tonic-gate * being analyzed prior to us recursing into this analysis. In either 1247c478bd9Sstevel@tonic-gate * case, ignore the object as it's already being taken care of. 1257c478bd9Sstevel@tonic-gate */ 1267c478bd9Sstevel@tonic-gate if (nlmco != CNTL(nlmp)) 1277c478bd9Sstevel@tonic-gate return (1); 1287c478bd9Sstevel@tonic-gate 1297c478bd9Sstevel@tonic-gate nlmc->lc_flags |= LMC_FLG_ANALYZING; 1307c478bd9Sstevel@tonic-gate 1317c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 1327c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & 1337c478bd9Sstevel@tonic-gate (FLG_RT_ANALZING | FLG_RT_ANALYZED | FLG_RT_DELETE)) 1347c478bd9Sstevel@tonic-gate continue; 1357c478bd9Sstevel@tonic-gate 1367c478bd9Sstevel@tonic-gate /* 1377c478bd9Sstevel@tonic-gate * Indicate that analyzing is under way. 1387c478bd9Sstevel@tonic-gate */ 1397c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_ANALZING; 1407c478bd9Sstevel@tonic-gate 1417c478bd9Sstevel@tonic-gate /* 1427c478bd9Sstevel@tonic-gate * If this link map represents a relocatable object, then we 1437c478bd9Sstevel@tonic-gate * need to finish the link-editing of the object at this point. 1447c478bd9Sstevel@tonic-gate */ 1457c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_OBJECT) { 1467c478bd9Sstevel@tonic-gate if (elf_obj_fini(lml, lmp) == 0) { 1477c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) 1487c478bd9Sstevel@tonic-gate continue; 1497c478bd9Sstevel@tonic-gate ret = 0; 1507c478bd9Sstevel@tonic-gate break; 1517c478bd9Sstevel@tonic-gate } 1527c478bd9Sstevel@tonic-gate } 1537c478bd9Sstevel@tonic-gate 1547c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_analyze(lmp)); 1557c478bd9Sstevel@tonic-gate 1567c478bd9Sstevel@tonic-gate /* 1577c478bd9Sstevel@tonic-gate * Establish any dependencies this object requires. 1587c478bd9Sstevel@tonic-gate */ 1597c478bd9Sstevel@tonic-gate if (LM_NEEDED(lmp)(lml, nlmco, lmp) == 0) { 1607c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) 1617c478bd9Sstevel@tonic-gate continue; 1627c478bd9Sstevel@tonic-gate ret = 0; 1637c478bd9Sstevel@tonic-gate break; 1647c478bd9Sstevel@tonic-gate } 1657c478bd9Sstevel@tonic-gate 1667c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_ANALZING; 1677c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_ANALYZED; 1687c478bd9Sstevel@tonic-gate 1697c478bd9Sstevel@tonic-gate /* 1707c478bd9Sstevel@tonic-gate * If we're building a configuration file, determine if this 1717c478bd9Sstevel@tonic-gate * object is a filter and if so load its filtees. This 1727c478bd9Sstevel@tonic-gate * traversal is only necessary for crle(1), as typical use of 1737c478bd9Sstevel@tonic-gate * an object will load filters as part of relocation processing. 1747c478bd9Sstevel@tonic-gate */ 1757c478bd9Sstevel@tonic-gate if (MODE(nlmp) & RTLD_CONFGEN) 1767c478bd9Sstevel@tonic-gate load_filtees(lmp); 1777c478bd9Sstevel@tonic-gate 1787c478bd9Sstevel@tonic-gate /* 1797c478bd9Sstevel@tonic-gate * If an interposer has been added, it will have been inserted 1807c478bd9Sstevel@tonic-gate * in the link-map before the link we're presently analyzing. 1817c478bd9Sstevel@tonic-gate * Break out of this analysis loop and return to the head of 1827c478bd9Sstevel@tonic-gate * the link-map control list to analyze the interposer. Note 1837c478bd9Sstevel@tonic-gate * that this rescan preserves the breadth first loading of 1847c478bd9Sstevel@tonic-gate * dependencies. 1857c478bd9Sstevel@tonic-gate */ 18624a6229eSrie /* LINTED */ 187*cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 1887c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_REANALYZE) { 1897c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_REANALYZE; 1907c478bd9Sstevel@tonic-gate lmp = nlmc->lc_head; 1917c478bd9Sstevel@tonic-gate } 1927c478bd9Sstevel@tonic-gate } 1937c478bd9Sstevel@tonic-gate 19424a6229eSrie /* LINTED */ 195*cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 1967c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_ANALYZING; 1977c478bd9Sstevel@tonic-gate 1987c478bd9Sstevel@tonic-gate return (ret); 1997c478bd9Sstevel@tonic-gate } 2007c478bd9Sstevel@tonic-gate 2017c478bd9Sstevel@tonic-gate /* 2027c478bd9Sstevel@tonic-gate * Copy relocation test. If the symbol definition is within .bss, then it's 2037c478bd9Sstevel@tonic-gate * zero filled, and as the destination is within .bss, we can skip copying 2047c478bd9Sstevel@tonic-gate * zero's to zero's. However, if the destination object has a MOVE table, it's 2057c478bd9Sstevel@tonic-gate * .bss might contain non-zero data, in which case copy it regardless. 2067c478bd9Sstevel@tonic-gate */ 2077c478bd9Sstevel@tonic-gate static int 2087c478bd9Sstevel@tonic-gate copy_zerobits(Rt_map *dlmp, Sym *dsym) 2097c478bd9Sstevel@tonic-gate { 2107c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & FLG_RT_MOVE) == 0) { 2117c478bd9Sstevel@tonic-gate Mmap *mmaps; 2127c478bd9Sstevel@tonic-gate caddr_t daddr = (caddr_t)dsym->st_value; 2137c478bd9Sstevel@tonic-gate 2147c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & FLG_RT_FIXED) == 0) 2157c478bd9Sstevel@tonic-gate daddr += ADDR(dlmp); 2167c478bd9Sstevel@tonic-gate 2177c478bd9Sstevel@tonic-gate for (mmaps = MMAPS(dlmp); mmaps->m_vaddr; mmaps++) { 2187c478bd9Sstevel@tonic-gate if ((mmaps->m_fsize != mmaps->m_msize) && 2197c478bd9Sstevel@tonic-gate (daddr >= (mmaps->m_vaddr + mmaps->m_fsize)) && 2207c478bd9Sstevel@tonic-gate (daddr < (mmaps->m_vaddr + mmaps->m_msize))) 2217c478bd9Sstevel@tonic-gate return (1); 2227c478bd9Sstevel@tonic-gate } 2237c478bd9Sstevel@tonic-gate } 2247c478bd9Sstevel@tonic-gate return (0); 2257c478bd9Sstevel@tonic-gate } 2267c478bd9Sstevel@tonic-gate 2277c478bd9Sstevel@tonic-gate /* 2287c478bd9Sstevel@tonic-gate * Relocate an individual object. 2297c478bd9Sstevel@tonic-gate */ 2307c478bd9Sstevel@tonic-gate static int 2317c478bd9Sstevel@tonic-gate relocate_so(Lm_list *lml, Rt_map *lmp, int *relocated, int now) 2327c478bd9Sstevel@tonic-gate { 2337c478bd9Sstevel@tonic-gate /* 2347c478bd9Sstevel@tonic-gate * If we're running under ldd(1), and haven't been asked to trace any 2357c478bd9Sstevel@tonic-gate * warnings, skip any actual relocation processing. 2367c478bd9Sstevel@tonic-gate */ 2377c478bd9Sstevel@tonic-gate if (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 2387c478bd9Sstevel@tonic-gate (lml->lm_flags & LML_FLG_TRC_WARN)) { 2397c478bd9Sstevel@tonic-gate 2407c478bd9Sstevel@tonic-gate if (relocated) 2417c478bd9Sstevel@tonic-gate (*relocated)++; 2427c478bd9Sstevel@tonic-gate 2437c478bd9Sstevel@tonic-gate if ((LM_RELOC(lmp)(lmp, now) == 0) && 2447c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0)) 2457c478bd9Sstevel@tonic-gate return (0); 2467c478bd9Sstevel@tonic-gate } 2477c478bd9Sstevel@tonic-gate return (1); 2487c478bd9Sstevel@tonic-gate } 2497c478bd9Sstevel@tonic-gate 2507c478bd9Sstevel@tonic-gate /* 2517c478bd9Sstevel@tonic-gate * Relocate the objects on a link-map control list. 2527c478bd9Sstevel@tonic-gate */ 2537c478bd9Sstevel@tonic-gate static int 2547c478bd9Sstevel@tonic-gate _relocate_lmc(Lm_list *lml, Rt_map *nlmp, int *relocated) 2557c478bd9Sstevel@tonic-gate { 2567c478bd9Sstevel@tonic-gate Rt_map *lmp; 2577c478bd9Sstevel@tonic-gate 2587c478bd9Sstevel@tonic-gate for (lmp = nlmp; lmp; lmp = (Rt_map *)NEXT(lmp)) { 2597c478bd9Sstevel@tonic-gate /* 2607c478bd9Sstevel@tonic-gate * If this object has already been relocated, we're done. If 2617c478bd9Sstevel@tonic-gate * this object is being deleted, skip it, there's probably a 2627c478bd9Sstevel@tonic-gate * relocation error somewhere that's causing this deletion. 2637c478bd9Sstevel@tonic-gate */ 2647c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & 2657c478bd9Sstevel@tonic-gate (FLG_RT_RELOCING | FLG_RT_RELOCED | FLG_RT_DELETE)) 2667c478bd9Sstevel@tonic-gate continue; 2677c478bd9Sstevel@tonic-gate 2687c478bd9Sstevel@tonic-gate /* 2697c478bd9Sstevel@tonic-gate * Indicate that relocation processing is under way. 2707c478bd9Sstevel@tonic-gate */ 2717c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_RELOCING; 2727c478bd9Sstevel@tonic-gate 2737c478bd9Sstevel@tonic-gate /* 2747c478bd9Sstevel@tonic-gate * Relocate the object. 2757c478bd9Sstevel@tonic-gate */ 2767c478bd9Sstevel@tonic-gate if (relocate_so(lml, lmp, relocated, 0) == 0) 2777c478bd9Sstevel@tonic-gate return (0); 2787c478bd9Sstevel@tonic-gate 2797c478bd9Sstevel@tonic-gate /* 2807c478bd9Sstevel@tonic-gate * Indicate that the objects relocation is complete. 2817c478bd9Sstevel@tonic-gate */ 2827c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_RELOCING; 2837c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_RELOCED; 2847c478bd9Sstevel@tonic-gate 2857c478bd9Sstevel@tonic-gate /* 2867c478bd9Sstevel@tonic-gate * Mark this object's init is available for harvesting. Under 2877c478bd9Sstevel@tonic-gate * ldd(1) this marking is necessary for -i (tsort) gathering. 2887c478bd9Sstevel@tonic-gate */ 2897c478bd9Sstevel@tonic-gate lml->lm_init++; 290dffec89cSrie lml->lm_flags |= LML_FLG_OBJADDED; 2917c478bd9Sstevel@tonic-gate 2927c478bd9Sstevel@tonic-gate /* 29310a4fa49Srie * Process any move data (not necessary under ldd()). 2947c478bd9Sstevel@tonic-gate */ 29510a4fa49Srie if ((FLAGS(lmp) & FLG_RT_MOVE) && 29610a4fa49Srie ((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0)) 2977c478bd9Sstevel@tonic-gate move_data(lmp); 2987c478bd9Sstevel@tonic-gate 2997c478bd9Sstevel@tonic-gate /* 3007c478bd9Sstevel@tonic-gate * Determine if this object is a filter, and if a load filter 3017c478bd9Sstevel@tonic-gate * flag is in effect, trigger the loading of all its filtees. 3027c478bd9Sstevel@tonic-gate */ 3037c478bd9Sstevel@tonic-gate load_filtees(lmp); 3047c478bd9Sstevel@tonic-gate } 3057c478bd9Sstevel@tonic-gate 3067c478bd9Sstevel@tonic-gate /* 3077c478bd9Sstevel@tonic-gate * Perform special copy relocations. These are only meaningful for 3087c478bd9Sstevel@tonic-gate * dynamic executables (fixed and head of their link-map list). If 3097c478bd9Sstevel@tonic-gate * this ever has to change then the infrastructure of COPY() has to 310*cce0e03bSab196087 * change. Presently, a given link map can only have a receiver or 311*cce0e03bSab196087 * supplier of copy data, so a union is used to overlap the storage 312*cce0e03bSab196087 * for the COPY_R() and COPY_S() lists. These lists would need to 313*cce0e03bSab196087 * be separated. 3147c478bd9Sstevel@tonic-gate */ 3157c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_FIXED) && (nlmp == LIST(nlmp)->lm_head) && 3167c478bd9Sstevel@tonic-gate (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 3177c478bd9Sstevel@tonic-gate (lml->lm_flags & LML_FLG_TRC_WARN))) { 318*cce0e03bSab196087 Rt_map *lmp; 319*cce0e03bSab196087 Aliste idx1; 3207c478bd9Sstevel@tonic-gate Word tracing; 3217c478bd9Sstevel@tonic-gate 32202ca3e02Srie #if defined(__i386) 3237c478bd9Sstevel@tonic-gate if (elf_copy_gen(nlmp) == 0) 3247c478bd9Sstevel@tonic-gate return (0); 3257c478bd9Sstevel@tonic-gate #endif 326*cce0e03bSab196087 if (COPY_S(nlmp) == NULL) 3277c478bd9Sstevel@tonic-gate return (1); 3287c478bd9Sstevel@tonic-gate 3297c478bd9Sstevel@tonic-gate if ((LIST(nlmp)->lm_flags & LML_FLG_TRC_ENABLE) && 3307c478bd9Sstevel@tonic-gate (((rtld_flags & RT_FL_SILENCERR) == 0) || 3317c478bd9Sstevel@tonic-gate (LIST(nlmp)->lm_flags & LML_FLG_TRC_VERBOSE))) 3327c478bd9Sstevel@tonic-gate tracing = 1; 3337c478bd9Sstevel@tonic-gate else 3347c478bd9Sstevel@tonic-gate tracing = 0; 3357c478bd9Sstevel@tonic-gate 3365aefb655Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 3377c478bd9Sstevel@tonic-gate 338*cce0e03bSab196087 for (APLIST_TRAVERSE(COPY_S(nlmp), idx1, lmp)) { 3397c478bd9Sstevel@tonic-gate Rel_copy * rcp; 340*cce0e03bSab196087 Aliste idx2; 3417c478bd9Sstevel@tonic-gate 342*cce0e03bSab196087 for (ALIST_TRAVERSE(COPY_R(lmp), idx2, rcp)) { 3437c478bd9Sstevel@tonic-gate int zero; 3447c478bd9Sstevel@tonic-gate 3457c478bd9Sstevel@tonic-gate /* 3467c478bd9Sstevel@tonic-gate * Only copy the bits if it's from non-zero 3477c478bd9Sstevel@tonic-gate * filled memory. 3487c478bd9Sstevel@tonic-gate */ 3497c478bd9Sstevel@tonic-gate zero = copy_zerobits(rcp->r_dlmp, rcp->r_dsym); 3505aefb655Srie DBG_CALL(Dbg_reloc_copy(rcp->r_dlmp, nlmp, 3515aefb655Srie rcp->r_name, zero)); 3527c478bd9Sstevel@tonic-gate if (zero) 3537c478bd9Sstevel@tonic-gate continue; 3547c478bd9Sstevel@tonic-gate 3557c478bd9Sstevel@tonic-gate (void) memcpy(rcp->r_radd, rcp->r_dadd, 3567c478bd9Sstevel@tonic-gate rcp->r_size); 3577c478bd9Sstevel@tonic-gate 3587c478bd9Sstevel@tonic-gate if ((tracing == 0) || ((FLAGS1(rcp->r_dlmp) & 3597c478bd9Sstevel@tonic-gate FL1_RT_DISPREL) == 0)) 3607c478bd9Sstevel@tonic-gate continue; 3617c478bd9Sstevel@tonic-gate 3627c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_REL_CPYDISP), 3637c478bd9Sstevel@tonic-gate demangle(rcp->r_name), NAME(rcp->r_dlmp)); 3647c478bd9Sstevel@tonic-gate } 3657c478bd9Sstevel@tonic-gate } 3667c478bd9Sstevel@tonic-gate 3675aefb655Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 3687c478bd9Sstevel@tonic-gate 369*cce0e03bSab196087 free(COPY_S(nlmp)); 370*cce0e03bSab196087 COPY_S(nlmp) = 0; 3717c478bd9Sstevel@tonic-gate } 3727c478bd9Sstevel@tonic-gate return (1); 3737c478bd9Sstevel@tonic-gate } 3747c478bd9Sstevel@tonic-gate 3757c478bd9Sstevel@tonic-gate int 37602ca3e02Srie relocate_lmc(Lm_list *lml, Aliste nlmco, Rt_map *clmp, Rt_map *nlmp) 3777c478bd9Sstevel@tonic-gate { 3787c478bd9Sstevel@tonic-gate int lret = 1, pret = 1; 379*cce0e03bSab196087 APlist *alp; 3807c478bd9Sstevel@tonic-gate Aliste plmco; 3817c478bd9Sstevel@tonic-gate Lm_cntl *plmc, *nlmc; 3827c478bd9Sstevel@tonic-gate 3837c478bd9Sstevel@tonic-gate /* 3847c478bd9Sstevel@tonic-gate * If this link-map control list is being relocated, return. The object 3857c478bd9Sstevel@tonic-gate * that has just been added will be picked up by the existing relocation 3867c478bd9Sstevel@tonic-gate * thread. Note, this is only really meaningful during process init- 3877c478bd9Sstevel@tonic-gate * ialization, as objects are added to the main link-map control list. 3887c478bd9Sstevel@tonic-gate * Following this initialization, each family of objects that are loaded 3897c478bd9Sstevel@tonic-gate * are added to a new link-map control list. 3907c478bd9Sstevel@tonic-gate */ 3917c478bd9Sstevel@tonic-gate /* LINTED */ 392*cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 3937c478bd9Sstevel@tonic-gate 3947c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_RELOCATING) 3957c478bd9Sstevel@tonic-gate return (1); 3967c478bd9Sstevel@tonic-gate 3977c478bd9Sstevel@tonic-gate nlmc->lc_flags |= LMC_FLG_RELOCATING; 3987c478bd9Sstevel@tonic-gate 3997c478bd9Sstevel@tonic-gate /* 4007c478bd9Sstevel@tonic-gate * Relocate one or more link-maps of a link map control list. If this 4017c478bd9Sstevel@tonic-gate * object doesn't belong to the present link-map control list then it 4027c478bd9Sstevel@tonic-gate * must already have been relocated, or it is in the process of being 4037c478bd9Sstevel@tonic-gate * relocated prior to us recursing into this relocation. In either 4047c478bd9Sstevel@tonic-gate * case, ignore the object as it's already being taken care of, however, 4057c478bd9Sstevel@tonic-gate * fall through and capture any relocation promotions that might have 4067c478bd9Sstevel@tonic-gate * been established from the reference mode of this object. 4077c478bd9Sstevel@tonic-gate * 4087c478bd9Sstevel@tonic-gate * If we're generating a configuration file using crle(1), two passes 4097c478bd9Sstevel@tonic-gate * may be involved. Under the first pass, RTLD_CONFGEN is set. Under 4107c478bd9Sstevel@tonic-gate * this pass, crle() loads objects into the process address space. No 4117c478bd9Sstevel@tonic-gate * relocation is necessary at this point, we simply need to analyze the 4127c478bd9Sstevel@tonic-gate * objects to insure any directly bound dependencies, filtees, etc. 4137c478bd9Sstevel@tonic-gate * get loaded. Although we skip the relocation, fall through to insure 4147c478bd9Sstevel@tonic-gate * any control lists are maintained appropriately. 4157c478bd9Sstevel@tonic-gate * 4167c478bd9Sstevel@tonic-gate * If objects are to be dldump(3c)'ed, crle(1) makes a second pass, 4177c478bd9Sstevel@tonic-gate * using RTLD_NOW and RTLD_CONFGEN. The RTLD_NOW effectively carries 4187c478bd9Sstevel@tonic-gate * out the relocations of all loaded objects. 4197c478bd9Sstevel@tonic-gate */ 4207c478bd9Sstevel@tonic-gate if ((nlmco == CNTL(nlmp)) && 4217c478bd9Sstevel@tonic-gate ((MODE(nlmp) & (RTLD_NOW | RTLD_CONFGEN)) != RTLD_CONFGEN)) { 4227c478bd9Sstevel@tonic-gate int relocated = 0; 4237c478bd9Sstevel@tonic-gate 4247c478bd9Sstevel@tonic-gate /* 4257c478bd9Sstevel@tonic-gate * Determine whether the initial link-map control list has 4267c478bd9Sstevel@tonic-gate * started relocation. From this point, should any interposing 4277c478bd9Sstevel@tonic-gate * objects be added to this link-map control list, the objects 4287c478bd9Sstevel@tonic-gate * are demoted to standard objects. Their interposition can't 4297c478bd9Sstevel@tonic-gate * be guaranteed once relocations have been carried out. 4307c478bd9Sstevel@tonic-gate */ 431*cce0e03bSab196087 if (nlmco == ALIST_OFF_DATA) 4327c478bd9Sstevel@tonic-gate lml->lm_flags |= LML_FLG_STARTREL; 4337c478bd9Sstevel@tonic-gate 4347c478bd9Sstevel@tonic-gate /* 43502ca3e02Srie * Relocate the link-map control list. Should this relocation 43602ca3e02Srie * fail, clean up this link-map list. Relocations within this 43702ca3e02Srie * list may have required relocation promotions on other lists, 43802ca3e02Srie * so before acting upon these, and possibly adding more objects 43902ca3e02Srie * to the present link-map control list, try and clean up any 44002ca3e02Srie * failed objects now. 4417c478bd9Sstevel@tonic-gate */ 4427c478bd9Sstevel@tonic-gate lret = _relocate_lmc(lml, nlmp, &relocated); 443*cce0e03bSab196087 if ((lret == 0) && (nlmco != ALIST_OFF_DATA)) 44402ca3e02Srie remove_lmc(lml, clmp, nlmc, nlmco, NAME(nlmp)); 4457c478bd9Sstevel@tonic-gate } 4467c478bd9Sstevel@tonic-gate 4477c478bd9Sstevel@tonic-gate /* 4487c478bd9Sstevel@tonic-gate * Determine the new, and previous link-map control lists. 4497c478bd9Sstevel@tonic-gate */ 45024a6229eSrie /* LINTED */ 451*cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 452*cce0e03bSab196087 if (nlmco == ALIST_OFF_DATA) { 4536679fdc0Srie plmco = nlmco; 4547c478bd9Sstevel@tonic-gate plmc = nlmc; 4556679fdc0Srie } else { 4567c478bd9Sstevel@tonic-gate plmco = nlmco - lml->lm_lists->al_size; 4577c478bd9Sstevel@tonic-gate /* LINTED */ 458*cce0e03bSab196087 plmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, plmco); 4597c478bd9Sstevel@tonic-gate } 4607c478bd9Sstevel@tonic-gate 4617c478bd9Sstevel@tonic-gate /* 4627c478bd9Sstevel@tonic-gate * Having completed this control list of objects, they can now be bound 4637c478bd9Sstevel@tonic-gate * to from other objects. Move this control list to the control list 4647c478bd9Sstevel@tonic-gate * that precedes it. Although this control list may have only bound to 4657c478bd9Sstevel@tonic-gate * controls lists much higher up the control list stack, it must only 4667c478bd9Sstevel@tonic-gate * be moved up one control list so as to preserve the link-map order 4677c478bd9Sstevel@tonic-gate * that may have already been traversed in search of symbols. 4687c478bd9Sstevel@tonic-gate */ 469*cce0e03bSab196087 if (lret && (nlmco != ALIST_OFF_DATA) && nlmc->lc_head) 4707c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 4717c478bd9Sstevel@tonic-gate 4727c478bd9Sstevel@tonic-gate /* 4737c478bd9Sstevel@tonic-gate * Determine whether existing objects that have already been relocated, 4747c478bd9Sstevel@tonic-gate * need any additional relocations performed. This can occur when new 4757c478bd9Sstevel@tonic-gate * objects are loaded with RTLD_NOW, and these new objects have 4767c478bd9Sstevel@tonic-gate * dependencies on objects that are already loaded. Note, that we peel 4777c478bd9Sstevel@tonic-gate * any relocation promotions off of one control list at a time. This 4787c478bd9Sstevel@tonic-gate * prevents relocations from being bound to objects that might yet fail 4797c478bd9Sstevel@tonic-gate * to relocate themselves. 4807c478bd9Sstevel@tonic-gate */ 481*cce0e03bSab196087 while ((alp = plmc->lc_now) != NULL) { 482*cce0e03bSab196087 Aliste idx; 483*cce0e03bSab196087 Rt_map *lmp; 4847c478bd9Sstevel@tonic-gate 4857c478bd9Sstevel@tonic-gate /* 4867c478bd9Sstevel@tonic-gate * Remove the relocation promotion list, as performing more 4877c478bd9Sstevel@tonic-gate * relocations may result in discovering more objects that need 4887c478bd9Sstevel@tonic-gate * promotion. 4897c478bd9Sstevel@tonic-gate */ 490*cce0e03bSab196087 plmc->lc_now = NULL; 4917c478bd9Sstevel@tonic-gate 492*cce0e03bSab196087 for (APLIST_TRAVERSE(alp, idx, lmp)) { 4937c478bd9Sstevel@tonic-gate /* 4947c478bd9Sstevel@tonic-gate * If the original relocation of the link-map control 4957c478bd9Sstevel@tonic-gate * list failed, or one of the relocation promotions of 4967c478bd9Sstevel@tonic-gate * this loop has failed, demote any pending objects 4977c478bd9Sstevel@tonic-gate * relocation mode. 4987c478bd9Sstevel@tonic-gate */ 4997c478bd9Sstevel@tonic-gate if ((lret == 0) || (pret == 0)) { 5007c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_NOW; 5017c478bd9Sstevel@tonic-gate MODE(lmp) |= RTLD_LAZY; 5027c478bd9Sstevel@tonic-gate continue; 5037c478bd9Sstevel@tonic-gate } 5047c478bd9Sstevel@tonic-gate 5057c478bd9Sstevel@tonic-gate /* 5067c478bd9Sstevel@tonic-gate * If a relocation fails, save the error condition. 5077c478bd9Sstevel@tonic-gate * It's possible that all new objects on the original 5087c478bd9Sstevel@tonic-gate * link-map control list have been relocated 5097c478bd9Sstevel@tonic-gate * successfully, but if the user request requires 5107c478bd9Sstevel@tonic-gate * promoting objects that have already been loaded, we 5117c478bd9Sstevel@tonic-gate * have to indicate that this operation couldn't be 5127c478bd9Sstevel@tonic-gate * performed. The unrelocated objects are in use on 5137c478bd9Sstevel@tonic-gate * another control list, and may continue to be used. 5147c478bd9Sstevel@tonic-gate * If the .plt that resulted in the error is called, 5157c478bd9Sstevel@tonic-gate * then the process will receive a fatal error at that 5167c478bd9Sstevel@tonic-gate * time. But, the .plt may never be called. 5177c478bd9Sstevel@tonic-gate */ 5187c478bd9Sstevel@tonic-gate if (relocate_so(lml, lmp, 0, 1) == 0) 5197c478bd9Sstevel@tonic-gate pret = 0; 5207c478bd9Sstevel@tonic-gate } 5217c478bd9Sstevel@tonic-gate 5227c478bd9Sstevel@tonic-gate /* 5237c478bd9Sstevel@tonic-gate * Having promoted any objects, determine whether additional 5247c478bd9Sstevel@tonic-gate * dependencies were added, and if so move them to the previous 5257c478bd9Sstevel@tonic-gate * link-map control list. 5267c478bd9Sstevel@tonic-gate */ 52724a6229eSrie /* LINTED */ 528*cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 52924a6229eSrie /* LINTED */ 530*cce0e03bSab196087 plmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, plmco); 531*cce0e03bSab196087 if ((nlmco != ALIST_OFF_DATA) && nlmc->lc_head) 5327c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 5338521e5e6Srie free(alp); 5347c478bd9Sstevel@tonic-gate } 5357c478bd9Sstevel@tonic-gate 53624a6229eSrie /* 53702ca3e02Srie * If relocations have been successful, indicate that relocations are 53802ca3e02Srie * no longer active for this control list. Otherwise, leave the 53902ca3e02Srie * relocation flag, as this flag is used to determine the style of 54002ca3e02Srie * cleanup (see remove_lmc()). 54124a6229eSrie */ 54202ca3e02Srie if (lret && pret) { 54324a6229eSrie /* LINTED */ 544*cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 5457c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_RELOCATING; 5467c478bd9Sstevel@tonic-gate 5477c478bd9Sstevel@tonic-gate return (1); 54802ca3e02Srie } 54902ca3e02Srie 5507c478bd9Sstevel@tonic-gate return (0); 5517c478bd9Sstevel@tonic-gate } 5527c478bd9Sstevel@tonic-gate 5537c478bd9Sstevel@tonic-gate /* 5547c478bd9Sstevel@tonic-gate * Inherit the first rejection message for possible later diagnostics. 5557c478bd9Sstevel@tonic-gate * 5567c478bd9Sstevel@tonic-gate * Any attempt to process a file that is unsuccessful, should be accompanied 5577c478bd9Sstevel@tonic-gate * with an error diagnostic. However, some operations like searching for a 5587c478bd9Sstevel@tonic-gate * simple filename, involve trying numerous paths, and an error message for each 5597c478bd9Sstevel@tonic-gate * lookup is not required. Although a multiple search can fail, it's possible 5607c478bd9Sstevel@tonic-gate * that a file was found, but was rejected because it was the wrong type. 5617c478bd9Sstevel@tonic-gate * To satisfy these possibilities, the first failure is recorded as a rejection 5627c478bd9Sstevel@tonic-gate * message, and this message is used later for a more specific diagnostic. 5637c478bd9Sstevel@tonic-gate * 5647c478bd9Sstevel@tonic-gate * File searches are focused at load_one(), and from here a rejection descriptor 5657c478bd9Sstevel@tonic-gate * is passed down to various child routines. If these child routines can 5667c478bd9Sstevel@tonic-gate * process multiple files, then they will maintain their own rejection desc- 5677c478bd9Sstevel@tonic-gate * riptor. This is filled in for any failures, and a diagnostic produced to 5687c478bd9Sstevel@tonic-gate * reflect the failure. The child routines then employ rejection_inherit() to 5697c478bd9Sstevel@tonic-gate * pass the first rejection message back to load_one(). 5707c478bd9Sstevel@tonic-gate * 5717c478bd9Sstevel@tonic-gate * Note that the name, and rejection string must be duplicated, as the name 5727c478bd9Sstevel@tonic-gate * buffer and error string buffer (see conv_ routines) may be reused for 5737c478bd9Sstevel@tonic-gate * additional processing or rejection messages. 5747c478bd9Sstevel@tonic-gate */ 5757c478bd9Sstevel@tonic-gate void 57631fdd7caSab196087 rejection_inherit(Rej_desc *rej1, Rej_desc *rej2) 5777c478bd9Sstevel@tonic-gate { 5787c478bd9Sstevel@tonic-gate if (rej2->rej_type && (rej1->rej_type == 0)) { 5797c478bd9Sstevel@tonic-gate rej1->rej_type = rej2->rej_type; 5807c478bd9Sstevel@tonic-gate rej1->rej_info = rej2->rej_info; 5817c478bd9Sstevel@tonic-gate rej1->rej_flag = rej2->rej_flag; 5827c478bd9Sstevel@tonic-gate if (rej2->rej_name) 5837c478bd9Sstevel@tonic-gate rej1->rej_name = strdup(rej2->rej_name); 5847c478bd9Sstevel@tonic-gate if (rej2->rej_str) { 5858521e5e6Srie if ((rej1->rej_str = strdup(rej2->rej_str)) == NULL) 5867c478bd9Sstevel@tonic-gate rej1->rej_str = MSG_ORIG(MSG_EMG_ENOMEM); 5877c478bd9Sstevel@tonic-gate } 5887c478bd9Sstevel@tonic-gate } 5897c478bd9Sstevel@tonic-gate } 5907c478bd9Sstevel@tonic-gate 5917c478bd9Sstevel@tonic-gate /* 5927c478bd9Sstevel@tonic-gate * Determine the object type of a file. 5937c478bd9Sstevel@tonic-gate */ 5947c478bd9Sstevel@tonic-gate Fct * 5957c478bd9Sstevel@tonic-gate are_u_this(Rej_desc *rej, int fd, struct stat *status, const char *name) 5967c478bd9Sstevel@tonic-gate { 5977c478bd9Sstevel@tonic-gate int i; 5987c478bd9Sstevel@tonic-gate char *maddr = 0; 5997c478bd9Sstevel@tonic-gate 6007c478bd9Sstevel@tonic-gate fmap->fm_fsize = status->st_size; 6017c478bd9Sstevel@tonic-gate 6027c478bd9Sstevel@tonic-gate /* 6037c478bd9Sstevel@tonic-gate * If this is a directory (which can't be mmap()'ed) generate a precise 6047c478bd9Sstevel@tonic-gate * error message. 6057c478bd9Sstevel@tonic-gate */ 6067c478bd9Sstevel@tonic-gate if ((status->st_mode & S_IFMT) == S_IFDIR) { 6077c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 6087c478bd9Sstevel@tonic-gate rej->rej_str = strerror(EISDIR); 6097c478bd9Sstevel@tonic-gate return (0); 6107c478bd9Sstevel@tonic-gate } 6117c478bd9Sstevel@tonic-gate 6127c478bd9Sstevel@tonic-gate /* 6137c478bd9Sstevel@tonic-gate * Map in the first page of the file. When this buffer is first used, 6147c478bd9Sstevel@tonic-gate * the mapping is a single system page. This is typically enough to 6157c478bd9Sstevel@tonic-gate * inspect the ehdr and phdrs of the file, and can be reused for each 6167c478bd9Sstevel@tonic-gate * file that get loaded. If a larger mapping is required to read the 6177c478bd9Sstevel@tonic-gate * ehdr and phdrs, a new mapping is created (see elf_map_it()). This 6187c478bd9Sstevel@tonic-gate * new mapping is again used for each new file loaded. Some objects, 6197c478bd9Sstevel@tonic-gate * such as filters, only take up one page, and in this case this mapping 6207c478bd9Sstevel@tonic-gate * will suffice for the file. 6217c478bd9Sstevel@tonic-gate */ 6227c478bd9Sstevel@tonic-gate maddr = mmap(fmap->fm_maddr, fmap->fm_msize, (PROT_READ | PROT_EXEC), 6237c478bd9Sstevel@tonic-gate fmap->fm_mflags, fd, 0); 6247c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 6257c478bd9Sstevel@tonic-gate if ((maddr == MAP_FAILED) && (errno == EINVAL)) { 6267c478bd9Sstevel@tonic-gate /* 6277c478bd9Sstevel@tonic-gate * If the mapping failed, and we used MAP_ALIGN, assume we're 6287c478bd9Sstevel@tonic-gate * on a system that doesn't support this option. Try again 6297c478bd9Sstevel@tonic-gate * without MAP_ALIGN. 6307c478bd9Sstevel@tonic-gate */ 6317c478bd9Sstevel@tonic-gate if (fmap->fm_mflags & MAP_ALIGN) { 6327c478bd9Sstevel@tonic-gate rtld_flags2 |= RT_FL2_NOMALIGN; 6337c478bd9Sstevel@tonic-gate fmap_setup(); 6347c478bd9Sstevel@tonic-gate 6357c478bd9Sstevel@tonic-gate maddr = (char *)mmap(fmap->fm_maddr, fmap->fm_msize, 6367c478bd9Sstevel@tonic-gate (PROT_READ | PROT_EXEC), fmap->fm_mflags, fd, 0); 6377c478bd9Sstevel@tonic-gate } 6387c478bd9Sstevel@tonic-gate } 6397c478bd9Sstevel@tonic-gate #endif 6407c478bd9Sstevel@tonic-gate if (maddr == MAP_FAILED) { 6417c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 6427c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 6437c478bd9Sstevel@tonic-gate return (0); 6447c478bd9Sstevel@tonic-gate } 6457c478bd9Sstevel@tonic-gate 6467c478bd9Sstevel@tonic-gate /* 6477c478bd9Sstevel@tonic-gate * From now on we will re-use fmap->fm_maddr as the mapping address 6487c478bd9Sstevel@tonic-gate * so we augment the flags with MAP_FIXED and drop any MAP_ALIGN. 6497c478bd9Sstevel@tonic-gate */ 6507c478bd9Sstevel@tonic-gate fmap->fm_maddr = maddr; 6517c478bd9Sstevel@tonic-gate fmap->fm_mflags |= MAP_FIXED; 6527c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 6537c478bd9Sstevel@tonic-gate fmap->fm_mflags &= ~MAP_ALIGN; 6547c478bd9Sstevel@tonic-gate #endif 6557c478bd9Sstevel@tonic-gate 6567c478bd9Sstevel@tonic-gate /* 6577c478bd9Sstevel@tonic-gate * Search through the object vectors to determine what kind of 6587c478bd9Sstevel@tonic-gate * object we have. 6597c478bd9Sstevel@tonic-gate */ 6607c478bd9Sstevel@tonic-gate for (i = 0; vector[i]; i++) { 6617c478bd9Sstevel@tonic-gate if ((vector[i]->fct_are_u_this)(rej)) 6627c478bd9Sstevel@tonic-gate return (vector[i]); 6637c478bd9Sstevel@tonic-gate else if (rej->rej_type) { 6647c478bd9Sstevel@tonic-gate Rt_map *lmp; 6657c478bd9Sstevel@tonic-gate 6667c478bd9Sstevel@tonic-gate /* 6677c478bd9Sstevel@tonic-gate * If this object is an explicitly defined shared 6687c478bd9Sstevel@tonic-gate * object under inspection by ldd, and contains a 6697c478bd9Sstevel@tonic-gate * incompatible hardware capabilities requirement, then 6707c478bd9Sstevel@tonic-gate * inform the user, but continue processing. 6717c478bd9Sstevel@tonic-gate * 6727c478bd9Sstevel@tonic-gate * XXXX - ldd -v for any rej failure. 6737c478bd9Sstevel@tonic-gate */ 6747c478bd9Sstevel@tonic-gate if ((rej->rej_type == SGS_REJ_HWCAP_1) && 6757c478bd9Sstevel@tonic-gate (lml_main.lm_flags & LML_FLG_TRC_LDDSTUB) && 6767c478bd9Sstevel@tonic-gate ((lmp = lml_main.lm_head) != 0) && 6777c478bd9Sstevel@tonic-gate (FLAGS1(lmp) & FL1_RT_LDDSTUB) && 6787c478bd9Sstevel@tonic-gate (NEXT(lmp) == 0)) { 6797c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_GEN_HWCAP_1), 6807c478bd9Sstevel@tonic-gate name, rej->rej_str); 6817c478bd9Sstevel@tonic-gate return (vector[i]); 6827c478bd9Sstevel@tonic-gate } 6837c478bd9Sstevel@tonic-gate return (0); 6847c478bd9Sstevel@tonic-gate } 6857c478bd9Sstevel@tonic-gate } 6867c478bd9Sstevel@tonic-gate 6877c478bd9Sstevel@tonic-gate /* 6887c478bd9Sstevel@tonic-gate * Unknown file type. 6897c478bd9Sstevel@tonic-gate */ 6907c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_UNKFILE; 6917c478bd9Sstevel@tonic-gate return (0); 6927c478bd9Sstevel@tonic-gate } 6937c478bd9Sstevel@tonic-gate 6947c478bd9Sstevel@tonic-gate /* 6950aa3cd4dSrie * Helper routine for is_so_matched() that consolidates matching a path name, 6960aa3cd4dSrie * or file name component of a link-map name. 6977c478bd9Sstevel@tonic-gate */ 6987c478bd9Sstevel@tonic-gate static int 6990aa3cd4dSrie _is_so_matched(const char *name, const char *str, int path) 7007c478bd9Sstevel@tonic-gate { 7017c478bd9Sstevel@tonic-gate const char *_str; 7027c478bd9Sstevel@tonic-gate 7030aa3cd4dSrie if ((path == 0) && ((_str = strrchr(str, '/')) != NULL)) 7047c478bd9Sstevel@tonic-gate _str++; 7057c478bd9Sstevel@tonic-gate else 7067c478bd9Sstevel@tonic-gate _str = str; 7077c478bd9Sstevel@tonic-gate 7087c478bd9Sstevel@tonic-gate return (strcmp(name, _str)); 7097c478bd9Sstevel@tonic-gate } 7107c478bd9Sstevel@tonic-gate 7110aa3cd4dSrie /* 7120aa3cd4dSrie * Determine whether a search name matches one of the names associated with a 7130aa3cd4dSrie * link-map. A link-map contains several names: 7140aa3cd4dSrie * 7150aa3cd4dSrie * . a NAME() - typically the full pathname of an object that has been 7160aa3cd4dSrie * loaded. For example, when looking for the dependency "libc.so.1", a 7170aa3cd4dSrie * search path is applied, with the eventual NAME() being "/lib/ld.so.1". 7180aa3cd4dSrie * The name of the executable is typically a simple filename, such as 7190aa3cd4dSrie * "main", as this is the name passed to exec() to start the process. 7200aa3cd4dSrie * 7210aa3cd4dSrie * . a PATHNAME() - this is maintained if the resolved NAME() is different 7220aa3cd4dSrie * to NAME(), ie. the original name is a symbolic link. This is also 7230aa3cd4dSrie * the resolved full pathname for a dynamic executable. 7240aa3cd4dSrie * 7250aa3cd4dSrie * . a list of ALIAS() names - these are alternative names by which the 7260aa3cd4dSrie * object has been found, ie. when dependencies are loaded through a 7270aa3cd4dSrie * variety of different symbolic links. 7280aa3cd4dSrie * 7290aa3cd4dSrie * The name pattern matching can differ depending on whether we are looking 7300aa3cd4dSrie * for a full path name (path != 0), or a simple file name (path == 0). Full 7310aa3cd4dSrie * path names typically match NAME() or PATHNAME() entries, so these link-map 7320aa3cd4dSrie * names are inspected first when a full path name is being searched for. 7330aa3cd4dSrie * Simple file names typically match ALIAS() names, so these link-map names are 7340aa3cd4dSrie * inspected first when a simple file name is being searched for. 7350aa3cd4dSrie * 7360aa3cd4dSrie * For all full path name searches, the link-map names are taken as is. For 7370aa3cd4dSrie * simple file name searches, only the file name component of any link-map 7380aa3cd4dSrie * names are used for comparison. 7390aa3cd4dSrie */ 7407c478bd9Sstevel@tonic-gate static Rt_map * 7410aa3cd4dSrie is_so_matched(Rt_map *lmp, const char *name, int path) 7427c478bd9Sstevel@tonic-gate { 743*cce0e03bSab196087 Aliste idx; 744*cce0e03bSab196087 const char *cp; 7457c478bd9Sstevel@tonic-gate 7467c478bd9Sstevel@tonic-gate /* 7470aa3cd4dSrie * A pathname is typically going to match a NAME() or PATHNAME(), so 7480aa3cd4dSrie * check these first. 7497c478bd9Sstevel@tonic-gate */ 7500aa3cd4dSrie if (path) { 7510aa3cd4dSrie if (strcmp(name, NAME(lmp)) == 0) 7527c478bd9Sstevel@tonic-gate return (lmp); 7537c478bd9Sstevel@tonic-gate 7547c478bd9Sstevel@tonic-gate if (PATHNAME(lmp) != NAME(lmp)) { 7550aa3cd4dSrie if (strcmp(name, PATHNAME(lmp)) == 0) 7567c478bd9Sstevel@tonic-gate return (lmp); 7577c478bd9Sstevel@tonic-gate } 7580aa3cd4dSrie } 7590aa3cd4dSrie 7600aa3cd4dSrie /* 7610aa3cd4dSrie * Typically, dependencies are specified as simple file names 7620aa3cd4dSrie * (DT_NEEDED == libc.so.1), which are expanded to full pathnames to 7630aa3cd4dSrie * open the file. The full pathname is NAME(), and the original name 7640aa3cd4dSrie * is maintained on the ALIAS() list. 7650aa3cd4dSrie * 7660aa3cd4dSrie * If this is a simple filename, or a pathname has failed to match the 7670aa3cd4dSrie * NAME() and PATHNAME() check above, look through the ALIAS() list. 7680aa3cd4dSrie */ 769*cce0e03bSab196087 for (APLIST_TRAVERSE(ALIAS(lmp), idx, cp)) { 7700aa3cd4dSrie /* 7710aa3cd4dSrie * If we're looking for a simple filename, _is_so_matched() 7720aa3cd4dSrie * will reduce the ALIAS name to its simple name. 7730aa3cd4dSrie */ 774*cce0e03bSab196087 if (_is_so_matched(name, cp, path) == 0) 7750aa3cd4dSrie return (lmp); 7760aa3cd4dSrie } 7770aa3cd4dSrie 7780aa3cd4dSrie /* 7790aa3cd4dSrie * Finally, if this is a simple file name, and any ALIAS() search has 7800aa3cd4dSrie * been completed, match the simple file name of NAME() and PATHNAME(). 7810aa3cd4dSrie */ 7820aa3cd4dSrie if (path == 0) { 7830aa3cd4dSrie if (_is_so_matched(name, NAME(lmp), 0) == 0) 7840aa3cd4dSrie return (lmp); 7850aa3cd4dSrie 7860aa3cd4dSrie if (PATHNAME(lmp) != NAME(lmp)) { 7870aa3cd4dSrie if (_is_so_matched(name, PATHNAME(lmp), 0) == 0) 7880aa3cd4dSrie return (lmp); 7890aa3cd4dSrie } 7900aa3cd4dSrie } 7910aa3cd4dSrie 7927c478bd9Sstevel@tonic-gate return (0); 7937c478bd9Sstevel@tonic-gate } 7947c478bd9Sstevel@tonic-gate 7950aa3cd4dSrie /* 7960aa3cd4dSrie * Files are opened by ld.so.1 to satisfy dependencies, filtees and dlopen() 7970aa3cd4dSrie * requests. Each request investigates the file based upon the callers 7980aa3cd4dSrie * environment, and once a full path name has been established a check is made 7990aa3cd4dSrie * against the FullpathNode AVL tree and a device/inode check, to ensure the 8000aa3cd4dSrie * same file isn't mapped multiple times. See file_open(). 8010aa3cd4dSrie * 8020aa3cd4dSrie * However, there are one of two cases where a test for an existing file name 8030aa3cd4dSrie * needs to be carried out, such as dlopen(NOLOAD) requests, dldump() requests, 8040aa3cd4dSrie * and as a final fallback to dependency loading. These requests are handled 8050aa3cd4dSrie * by is_so_loaded(). 8060aa3cd4dSrie * 8070aa3cd4dSrie * A traversal through the callers link-map list is carried out, and from each 8080aa3cd4dSrie * link-map, a comparison is made against all of the various names by which the 8090aa3cd4dSrie * object has been referenced. The subroutine, is_so_matched() compares the 8100aa3cd4dSrie * link-map names against the name being searched for. Whether the search name 8110aa3cd4dSrie * is a full path name or a simple file name, governs what comparisons are made. 8120aa3cd4dSrie * 8130aa3cd4dSrie * A full path name, which is a fully resolved path name that starts with a "/" 8140aa3cd4dSrie * character, or a relative path name that includes a "/" character, must match 8150aa3cd4dSrie * the link-map names explicitly. A simple file name, which is any name *not* 8160aa3cd4dSrie * containing a "/" character, are matched against the file name component of 8170aa3cd4dSrie * any link-map names. 8180aa3cd4dSrie */ 8197c478bd9Sstevel@tonic-gate Rt_map * 8200aa3cd4dSrie is_so_loaded(Lm_list *lml, const char *name) 8217c478bd9Sstevel@tonic-gate { 8227c478bd9Sstevel@tonic-gate Rt_map *lmp; 8237c478bd9Sstevel@tonic-gate avl_index_t where; 8247c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 825*cce0e03bSab196087 Aliste idx; 8260aa3cd4dSrie int path = 0; 8277c478bd9Sstevel@tonic-gate 8287c478bd9Sstevel@tonic-gate /* 8290aa3cd4dSrie * If the name is a full path name, first determine if the path name is 8300aa3cd4dSrie * registered in the FullpathNode AVL tree. 8317c478bd9Sstevel@tonic-gate */ 8320aa3cd4dSrie if ((name[0] == '/') && 8337c478bd9Sstevel@tonic-gate ((lmp = fpavl_loaded(lml, name, &where)) != NULL) && 8347c478bd9Sstevel@tonic-gate ((FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) == 0)) 8357c478bd9Sstevel@tonic-gate return (lmp); 8367c478bd9Sstevel@tonic-gate 8377c478bd9Sstevel@tonic-gate /* 8380aa3cd4dSrie * Determine whether the name is a simple file name, or a path name. 8397c478bd9Sstevel@tonic-gate */ 8400aa3cd4dSrie if (strchr(name, '/')) 8410aa3cd4dSrie path++; 8427c478bd9Sstevel@tonic-gate 8437c478bd9Sstevel@tonic-gate /* 8447c478bd9Sstevel@tonic-gate * Loop through the callers link-map lists. 8457c478bd9Sstevel@tonic-gate */ 846*cce0e03bSab196087 for (ALIST_TRAVERSE(lml->lm_lists, idx, lmc)) { 8477c478bd9Sstevel@tonic-gate for (lmp = lmc->lc_head; lmp; lmp = (Rt_map *)NEXT(lmp)) { 8487c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) 8497c478bd9Sstevel@tonic-gate continue; 8507c478bd9Sstevel@tonic-gate 8510aa3cd4dSrie if (is_so_matched(lmp, name, path)) 8527c478bd9Sstevel@tonic-gate return (lmp); 8537c478bd9Sstevel@tonic-gate } 8547c478bd9Sstevel@tonic-gate } 8557c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 8567c478bd9Sstevel@tonic-gate } 8577c478bd9Sstevel@tonic-gate 8587c478bd9Sstevel@tonic-gate /* 8597c478bd9Sstevel@tonic-gate * Tracing is enabled by the LD_TRACE_LOADED_OPTIONS environment variable which 8607c478bd9Sstevel@tonic-gate * is normally set from ldd(1). For each link map we load, print the load name 8617c478bd9Sstevel@tonic-gate * and the full pathname of the shared object. 8627c478bd9Sstevel@tonic-gate */ 8637c478bd9Sstevel@tonic-gate /* ARGSUSED4 */ 8647c478bd9Sstevel@tonic-gate static void 8657c478bd9Sstevel@tonic-gate trace_so(Rt_map *clmp, Rej_desc *rej, const char *name, const char *path, 8667c478bd9Sstevel@tonic-gate int alter, const char *nfound) 8677c478bd9Sstevel@tonic-gate { 8687c478bd9Sstevel@tonic-gate const char *str = MSG_ORIG(MSG_STR_EMPTY); 8697c478bd9Sstevel@tonic-gate const char *reject = MSG_ORIG(MSG_STR_EMPTY); 8707c478bd9Sstevel@tonic-gate char _reject[PATH_MAX]; 8717c478bd9Sstevel@tonic-gate 8727c478bd9Sstevel@tonic-gate /* 8737c478bd9Sstevel@tonic-gate * The first time through trace_so() will only have lddstub on the 8747c478bd9Sstevel@tonic-gate * link-map list and the preloaded shared object is supplied as "path". 8757c478bd9Sstevel@tonic-gate * As we don't want to print this shared object as a dependency, but 8767c478bd9Sstevel@tonic-gate * instead inspect *its* dependencies, return. 8777c478bd9Sstevel@tonic-gate */ 8787c478bd9Sstevel@tonic-gate if (FLAGS1(clmp) & FL1_RT_LDDSTUB) 8797c478bd9Sstevel@tonic-gate return; 8807c478bd9Sstevel@tonic-gate 8817c478bd9Sstevel@tonic-gate /* 8827c478bd9Sstevel@tonic-gate * Without any rejection info, this is a supplied not-found condition. 8837c478bd9Sstevel@tonic-gate */ 8847c478bd9Sstevel@tonic-gate if (rej && (rej->rej_type == 0)) { 8857c478bd9Sstevel@tonic-gate (void) printf(nfound, name); 8867c478bd9Sstevel@tonic-gate return; 8877c478bd9Sstevel@tonic-gate } 8887c478bd9Sstevel@tonic-gate 8897c478bd9Sstevel@tonic-gate /* 8907c478bd9Sstevel@tonic-gate * If rejection information exists then establish what object was 8917c478bd9Sstevel@tonic-gate * found and the reason for its rejection. 8927c478bd9Sstevel@tonic-gate */ 8937c478bd9Sstevel@tonic-gate if (rej) { 894de777a60Sab196087 Conv_reject_desc_buf_t rej_buf; 895de777a60Sab196087 8967c478bd9Sstevel@tonic-gate /* LINTED */ 8977c478bd9Sstevel@tonic-gate (void) snprintf(_reject, PATH_MAX, 898de777a60Sab196087 MSG_INTL(ldd_reject[rej->rej_type]), 899de777a60Sab196087 conv_reject_desc(rej, &rej_buf)); 9007c478bd9Sstevel@tonic-gate if (rej->rej_name) 9017c478bd9Sstevel@tonic-gate path = rej->rej_name; 9027c478bd9Sstevel@tonic-gate reject = (char *)_reject; 9037c478bd9Sstevel@tonic-gate 9047c478bd9Sstevel@tonic-gate /* 9057c478bd9Sstevel@tonic-gate * Was an alternative pathname defined (from a configuration 9067c478bd9Sstevel@tonic-gate * file). 9077c478bd9Sstevel@tonic-gate */ 9087c478bd9Sstevel@tonic-gate if (rej->rej_flag & FLG_FD_ALTER) 9097c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 9107c478bd9Sstevel@tonic-gate } else { 9117c478bd9Sstevel@tonic-gate if (alter) 9127c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 9137c478bd9Sstevel@tonic-gate } 9147c478bd9Sstevel@tonic-gate 9157c478bd9Sstevel@tonic-gate /* 9167c478bd9Sstevel@tonic-gate * If the load name isn't a full pathname print its associated pathname 9177c478bd9Sstevel@tonic-gate * together with all the other information we've gathered. 9187c478bd9Sstevel@tonic-gate */ 9197c478bd9Sstevel@tonic-gate if (*name == '/') 9207c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), path, str, reject); 9217c478bd9Sstevel@tonic-gate else 9227247f888Srie (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), name, path, str, 9237247f888Srie reject); 9247c478bd9Sstevel@tonic-gate } 9257c478bd9Sstevel@tonic-gate 9267c478bd9Sstevel@tonic-gate 9277c478bd9Sstevel@tonic-gate /* 9287c478bd9Sstevel@tonic-gate * Establish a link-map mode, initializing it if it has just been loaded, or 9297c478bd9Sstevel@tonic-gate * potentially updating it if it already exists. 9307c478bd9Sstevel@tonic-gate */ 9317c478bd9Sstevel@tonic-gate int 9327c478bd9Sstevel@tonic-gate update_mode(Rt_map *lmp, int omode, int nmode) 9337c478bd9Sstevel@tonic-gate { 934dffec89cSrie Lm_list *lml = LIST(lmp); 9357c478bd9Sstevel@tonic-gate int pmode = 0; 9367c478bd9Sstevel@tonic-gate 9377c478bd9Sstevel@tonic-gate /* 9387c478bd9Sstevel@tonic-gate * A newly loaded object hasn't had its mode set yet. Modes are used to 9397c478bd9Sstevel@tonic-gate * load dependencies, so don't propagate any parent or no-load flags, as 9407c478bd9Sstevel@tonic-gate * these would adversely affect this objects ability to load any of its 9417c478bd9Sstevel@tonic-gate * dependencies that aren't already loaded. RTLD_FIRST is applicable to 9427c478bd9Sstevel@tonic-gate * this objects handle creation only, and should not be propagated. 9437c478bd9Sstevel@tonic-gate */ 9447c478bd9Sstevel@tonic-gate if ((FLAGS(lmp) & FLG_RT_MODESET) == 0) { 9457c478bd9Sstevel@tonic-gate MODE(lmp) |= nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST); 9467c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_MODESET; 9477c478bd9Sstevel@tonic-gate return (1); 9487c478bd9Sstevel@tonic-gate } 9497c478bd9Sstevel@tonic-gate 9507c478bd9Sstevel@tonic-gate /* 9517c478bd9Sstevel@tonic-gate * Establish any new overriding modes. RTLD_LAZY and RTLD_NOW should be 9527c478bd9Sstevel@tonic-gate * represented individually (this is historic, as these two flags were 9537c478bd9Sstevel@tonic-gate * the only flags originally available to dlopen()). Other flags are 9547c478bd9Sstevel@tonic-gate * accumulative, but have a hierarchy of preference. 9557c478bd9Sstevel@tonic-gate */ 9567c478bd9Sstevel@tonic-gate if ((omode & RTLD_LAZY) && (nmode & RTLD_NOW)) { 9577c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_LAZY; 9587c478bd9Sstevel@tonic-gate pmode |= RTLD_NOW; 9597c478bd9Sstevel@tonic-gate } 9607c478bd9Sstevel@tonic-gate 9617c478bd9Sstevel@tonic-gate pmode |= ((~omode & nmode) & 9627c478bd9Sstevel@tonic-gate (RTLD_GLOBAL | RTLD_WORLD | RTLD_NODELETE)); 9637c478bd9Sstevel@tonic-gate if (pmode) { 9645aefb655Srie DBG_CALL(Dbg_file_mode_promote(lmp, pmode)); 9657c478bd9Sstevel@tonic-gate MODE(lmp) |= pmode; 9667c478bd9Sstevel@tonic-gate } 9677c478bd9Sstevel@tonic-gate 9687c478bd9Sstevel@tonic-gate /* 9697c478bd9Sstevel@tonic-gate * If this load is an RTLD_NOW request and the object has already been 9707c478bd9Sstevel@tonic-gate * loaded non-RTLD_NOW, append this object to the relocation-now list 9717c478bd9Sstevel@tonic-gate * of the objects associated control list. Note, if the object hasn't 9727c478bd9Sstevel@tonic-gate * yet been relocated, setting its MODE() to RTLD_NOW will establish 9737c478bd9Sstevel@tonic-gate * full relocation processing when it eventually gets relocated. 9747c478bd9Sstevel@tonic-gate */ 9757c478bd9Sstevel@tonic-gate if ((pmode & RTLD_NOW) && 9767c478bd9Sstevel@tonic-gate (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))) { 9777c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 9787c478bd9Sstevel@tonic-gate 9797c478bd9Sstevel@tonic-gate /* LINTED */ 980*cce0e03bSab196087 lmc = (Lm_cntl *)alist_item_by_offset(LIST(lmp)->lm_lists, 981*cce0e03bSab196087 CNTL(lmp)); 982*cce0e03bSab196087 (void) aplist_append(&lmc->lc_now, lmp, AL_CNT_LMNOW); 9837c478bd9Sstevel@tonic-gate } 9847c478bd9Sstevel@tonic-gate 9857c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 9867c478bd9Sstevel@tonic-gate /* 9877c478bd9Sstevel@tonic-gate * For patch backward compatibility the following .init collection 9887c478bd9Sstevel@tonic-gate * is disabled. 9897c478bd9Sstevel@tonic-gate */ 9907c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 9917c478bd9Sstevel@tonic-gate return (pmode); 9927c478bd9Sstevel@tonic-gate #endif 9937c478bd9Sstevel@tonic-gate 9947c478bd9Sstevel@tonic-gate /* 995dffec89cSrie * If this objects .init has been collected but has not yet been called, 996dffec89cSrie * it may be necessary to reevaluate the object using tsort(). For 9977c478bd9Sstevel@tonic-gate * example, a new dlopen() hierarchy may bind to uninitialized objects 9987c478bd9Sstevel@tonic-gate * that are already loaded, or a dlopen(RTLD_NOW) can establish new 9997c478bd9Sstevel@tonic-gate * bindings between already loaded objects that require the tsort() 1000dffec89cSrie * information be recomputed. If however, no new objects have been 1001dffec89cSrie * added to the process, and this object hasn't been promoted, don't 1002dffec89cSrie * bother reevaluating the .init. The present tsort() information is 1003dffec89cSrie * probably as accurate as necessary, and by not establishing a parallel 1004dffec89cSrie * tsort() we can help reduce the amount of recursion possible between 1005dffec89cSrie * .inits. 10067c478bd9Sstevel@tonic-gate */ 1007dffec89cSrie if (((FLAGS(lmp) & 1008dffec89cSrie (FLG_RT_INITCLCT | FLG_RT_INITCALL)) == FLG_RT_INITCLCT) && 1009dffec89cSrie ((lml->lm_flags & LML_FLG_OBJADDED) || ((pmode & RTLD_NOW) && 1010dffec89cSrie (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))))) { 10117c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_INITCLCT; 10127c478bd9Sstevel@tonic-gate LIST(lmp)->lm_init++; 1013dffec89cSrie LIST(lmp)->lm_flags |= LML_FLG_OBJREEVAL; 10147c478bd9Sstevel@tonic-gate } 10157c478bd9Sstevel@tonic-gate 10167c478bd9Sstevel@tonic-gate return (pmode); 10177c478bd9Sstevel@tonic-gate } 10187c478bd9Sstevel@tonic-gate 10197c478bd9Sstevel@tonic-gate /* 10207c478bd9Sstevel@tonic-gate * Determine whether an alias name already exists, and if not create one. This 10217c478bd9Sstevel@tonic-gate * is typically used to retain dependency names, such as "libc.so.1", which 10227c478bd9Sstevel@tonic-gate * would have been expanded to full path names when they were loaded. The 10237c478bd9Sstevel@tonic-gate * full path names (NAME() and possibly PATHNAME()) are maintained as Fullpath 10247c478bd9Sstevel@tonic-gate * AVL nodes, and thus would have been matched by fpavl_loaded() during 10257c478bd9Sstevel@tonic-gate * file_open(). 10267c478bd9Sstevel@tonic-gate */ 10277c478bd9Sstevel@tonic-gate int 10287c478bd9Sstevel@tonic-gate append_alias(Rt_map *lmp, const char *str, int *added) 10297c478bd9Sstevel@tonic-gate { 1030*cce0e03bSab196087 Aliste idx; 1031*cce0e03bSab196087 char *cp; 10327c478bd9Sstevel@tonic-gate 10337c478bd9Sstevel@tonic-gate /* 10347c478bd9Sstevel@tonic-gate * Determine if this filename is already on the alias list. 10357c478bd9Sstevel@tonic-gate */ 1036*cce0e03bSab196087 for (APLIST_TRAVERSE(ALIAS(lmp), idx, cp)) { 1037*cce0e03bSab196087 if (strcmp(cp, str) == 0) 10387c478bd9Sstevel@tonic-gate return (1); 10397c478bd9Sstevel@tonic-gate } 10407c478bd9Sstevel@tonic-gate 10417c478bd9Sstevel@tonic-gate /* 10427c478bd9Sstevel@tonic-gate * This is a new alias, append it to the alias list. 10437c478bd9Sstevel@tonic-gate */ 10448521e5e6Srie if ((cp = strdup(str)) == NULL) 10457c478bd9Sstevel@tonic-gate return (0); 10467c478bd9Sstevel@tonic-gate 1047*cce0e03bSab196087 if (aplist_append(&ALIAS(lmp), cp, AL_CNT_ALIAS) == NULL) { 10487c478bd9Sstevel@tonic-gate free(cp); 10497c478bd9Sstevel@tonic-gate return (0); 10507c478bd9Sstevel@tonic-gate } 10517c478bd9Sstevel@tonic-gate if (added) 10527c478bd9Sstevel@tonic-gate *added = 1; 10537c478bd9Sstevel@tonic-gate return (1); 10547c478bd9Sstevel@tonic-gate } 10557c478bd9Sstevel@tonic-gate 10567c478bd9Sstevel@tonic-gate /* 10577c478bd9Sstevel@tonic-gate * Determine whether a file is already loaded by comparing device and inode 10587c478bd9Sstevel@tonic-gate * values. 10597c478bd9Sstevel@tonic-gate */ 10607c478bd9Sstevel@tonic-gate static Rt_map * 10617c478bd9Sstevel@tonic-gate is_devinode_loaded(struct stat *status, Lm_list *lml, const char *name, 10627c478bd9Sstevel@tonic-gate uint_t flags) 10637c478bd9Sstevel@tonic-gate { 10647c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 1065*cce0e03bSab196087 Aliste idx; 10667c478bd9Sstevel@tonic-gate 10677c478bd9Sstevel@tonic-gate /* 10687c478bd9Sstevel@tonic-gate * If this is an auditor, it will have been opened on a new link-map. 10698af2c5b9Srie * To prevent multiple occurrences of the same auditor on multiple 10707c478bd9Sstevel@tonic-gate * link-maps, search the head of each link-map list and see if this 10717c478bd9Sstevel@tonic-gate * object is already loaded as an auditor. 10727c478bd9Sstevel@tonic-gate */ 10737c478bd9Sstevel@tonic-gate if (flags & FLG_RT_AUDIT) { 10747c478bd9Sstevel@tonic-gate Lm_list * lml; 10757c478bd9Sstevel@tonic-gate Listnode * lnp; 10767c478bd9Sstevel@tonic-gate 10777c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(&dynlm_list, lnp, lml)) { 10787c478bd9Sstevel@tonic-gate Rt_map *nlmp = lml->lm_head; 10797c478bd9Sstevel@tonic-gate 10807c478bd9Sstevel@tonic-gate if (nlmp && ((FLAGS(nlmp) & 10817c478bd9Sstevel@tonic-gate (FLG_RT_AUDIT | FLG_RT_DELETE)) == FLG_RT_AUDIT) && 10827c478bd9Sstevel@tonic-gate (STDEV(nlmp) == status->st_dev) && 10837c478bd9Sstevel@tonic-gate (STINO(nlmp) == status->st_ino)) 10847c478bd9Sstevel@tonic-gate return (nlmp); 10857c478bd9Sstevel@tonic-gate } 10867c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 10877c478bd9Sstevel@tonic-gate } 10887c478bd9Sstevel@tonic-gate 10897c478bd9Sstevel@tonic-gate /* 10907c478bd9Sstevel@tonic-gate * If the file has been found determine from the new files status 10917c478bd9Sstevel@tonic-gate * information if this file is actually linked to one we already have 10927c478bd9Sstevel@tonic-gate * mapped. This catches symlink names not caught by is_so_loaded(). 10937c478bd9Sstevel@tonic-gate */ 1094*cce0e03bSab196087 for (ALIST_TRAVERSE(lml->lm_lists, idx, lmc)) { 10957c478bd9Sstevel@tonic-gate Rt_map *nlmp; 10967c478bd9Sstevel@tonic-gate 10977c478bd9Sstevel@tonic-gate for (nlmp = lmc->lc_head; nlmp; nlmp = (Rt_map *)NEXT(nlmp)) { 10987c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_DELETE) || 10997c478bd9Sstevel@tonic-gate (FLAGS1(nlmp) & FL1_RT_LDDSTUB)) 11007c478bd9Sstevel@tonic-gate continue; 11017c478bd9Sstevel@tonic-gate 11027c478bd9Sstevel@tonic-gate if ((STDEV(nlmp) != status->st_dev) || 11037c478bd9Sstevel@tonic-gate (STINO(nlmp) != status->st_ino)) 11047c478bd9Sstevel@tonic-gate continue; 11057c478bd9Sstevel@tonic-gate 11067c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_VERBOSE) { 11077247f888Srie /* BEGIN CSTYLED */ 11087c478bd9Sstevel@tonic-gate if (*name == '/') 11097c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 11107c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 11117c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 11127c478bd9Sstevel@tonic-gate else 11137c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 11147c478bd9Sstevel@tonic-gate name, NAME(nlmp), 11157c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 11167c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 11177247f888Srie /* END CSTYLED */ 11187c478bd9Sstevel@tonic-gate } 11197c478bd9Sstevel@tonic-gate return (nlmp); 11207c478bd9Sstevel@tonic-gate } 11217c478bd9Sstevel@tonic-gate } 11227c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 11237c478bd9Sstevel@tonic-gate } 11247c478bd9Sstevel@tonic-gate 11257c478bd9Sstevel@tonic-gate /* 11267c478bd9Sstevel@tonic-gate * Generate any error messages indicating a file could not be found. When 11277c478bd9Sstevel@tonic-gate * preloading or auditing a secure application, it can be a little more helpful 11287c478bd9Sstevel@tonic-gate * to indicate that a search of secure directories has failed, so adjust the 11297c478bd9Sstevel@tonic-gate * messages accordingly. 11307c478bd9Sstevel@tonic-gate */ 11317c478bd9Sstevel@tonic-gate void 11327c478bd9Sstevel@tonic-gate file_notfound(Lm_list *lml, const char *name, Rt_map *clmp, uint_t flags, 11337c478bd9Sstevel@tonic-gate Rej_desc * rej) 11347c478bd9Sstevel@tonic-gate { 11357c478bd9Sstevel@tonic-gate int secure = 0; 11367c478bd9Sstevel@tonic-gate 11377c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SECURE) && 11387c478bd9Sstevel@tonic-gate (flags & (FLG_RT_PRELOAD | FLG_RT_AUDIT))) 11397c478bd9Sstevel@tonic-gate secure++; 11407c478bd9Sstevel@tonic-gate 11417c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 11427c478bd9Sstevel@tonic-gate /* 11437c478bd9Sstevel@tonic-gate * Under ldd(1), auxiliary filtees that can't be loaded are 11447c478bd9Sstevel@tonic-gate * ignored, unless verbose errors are requested. 11457c478bd9Sstevel@tonic-gate */ 11467c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SILENCERR) && 11477c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_TRC_VERBOSE) == 0)) 11487c478bd9Sstevel@tonic-gate return; 11497c478bd9Sstevel@tonic-gate 11507c478bd9Sstevel@tonic-gate if (secure) 11517c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 11527c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_SEC_NFOUND)); 11537c478bd9Sstevel@tonic-gate else 11547c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 11557c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_NFOUND)); 11567c478bd9Sstevel@tonic-gate return; 11577c478bd9Sstevel@tonic-gate } 11587c478bd9Sstevel@tonic-gate 11597c478bd9Sstevel@tonic-gate if (rej->rej_type) { 1160de777a60Sab196087 Conv_reject_desc_buf_t rej_buf; 1161de777a60Sab196087 11625aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(err_reject[rej->rej_type]), 11637c478bd9Sstevel@tonic-gate rej->rej_name ? rej->rej_name : MSG_INTL(MSG_STR_UNKNOWN), 1164de777a60Sab196087 conv_reject_desc(rej, &rej_buf)); 11657c478bd9Sstevel@tonic-gate return; 11667c478bd9Sstevel@tonic-gate } 11677c478bd9Sstevel@tonic-gate 11687c478bd9Sstevel@tonic-gate if (secure) 11695aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SEC_OPEN), name); 11707c478bd9Sstevel@tonic-gate else 11715aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), name, 11727c478bd9Sstevel@tonic-gate strerror(ENOENT)); 11737c478bd9Sstevel@tonic-gate } 11747c478bd9Sstevel@tonic-gate 11757c478bd9Sstevel@tonic-gate static int 11767c478bd9Sstevel@tonic-gate file_open(int err, Lm_list *lml, const char *oname, const char *nname, 11777c478bd9Sstevel@tonic-gate Rt_map *clmp, uint_t flags, Fdesc *fdesc, Rej_desc *rej) 11787c478bd9Sstevel@tonic-gate { 11797c478bd9Sstevel@tonic-gate struct stat status; 11807c478bd9Sstevel@tonic-gate Rt_map *nlmp; 11818521e5e6Srie int resolved = 0; 11827c478bd9Sstevel@tonic-gate 11837c478bd9Sstevel@tonic-gate fdesc->fd_oname = oname; 11847c478bd9Sstevel@tonic-gate 11857c478bd9Sstevel@tonic-gate if ((err == 0) && (fdesc->fd_flags & FLG_FD_ALTER)) 11865aefb655Srie DBG_CALL(Dbg_file_config_obj(lml, oname, 0, nname)); 11877c478bd9Sstevel@tonic-gate 11887c478bd9Sstevel@tonic-gate /* 11897c478bd9Sstevel@tonic-gate * If we're dealing with a full pathname, determine whether this 11907c478bd9Sstevel@tonic-gate * pathname is already known. Other pathnames fall through to the 11917c478bd9Sstevel@tonic-gate * dev/inode check, as even though the pathname may look the same as 11927c478bd9Sstevel@tonic-gate * one previously used, the process may have changed directory. 11937c478bd9Sstevel@tonic-gate */ 11947c478bd9Sstevel@tonic-gate if ((err == 0) && (nname[0] == '/')) { 11957c478bd9Sstevel@tonic-gate if ((nlmp = fpavl_loaded(lml, nname, 11967c478bd9Sstevel@tonic-gate &(fdesc->fd_avlwhere))) != NULL) { 11977c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 11987c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 11997c478bd9Sstevel@tonic-gate return (1); 12007c478bd9Sstevel@tonic-gate } 12017c478bd9Sstevel@tonic-gate } 12027c478bd9Sstevel@tonic-gate 12037c478bd9Sstevel@tonic-gate if ((err == 0) && ((stat(nname, &status)) != -1)) { 12047c478bd9Sstevel@tonic-gate char path[PATH_MAX]; 12057c478bd9Sstevel@tonic-gate int fd, size, added; 12067c478bd9Sstevel@tonic-gate 12077c478bd9Sstevel@tonic-gate /* 12087c478bd9Sstevel@tonic-gate * If this path has been constructed as part of expanding a 12098521e5e6Srie * HWCAP directory, ignore any subdirectories. As this is a 12108521e5e6Srie * silent failure, where no rejection message is created, free 12118521e5e6Srie * the original name to simplify the life of the caller. For 12128521e5e6Srie * any other reference that expands to a directory, fall through 12138af2c5b9Srie * to construct a meaningful rejection message. 12147c478bd9Sstevel@tonic-gate */ 12157c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) && 12168521e5e6Srie ((status.st_mode & S_IFMT) == S_IFDIR)) { 12178521e5e6Srie free((void *)nname); 12187c478bd9Sstevel@tonic-gate return (0); 12198521e5e6Srie } 12207c478bd9Sstevel@tonic-gate 12217c478bd9Sstevel@tonic-gate /* 12227c478bd9Sstevel@tonic-gate * Resolve the filename and determine whether the resolved name 12237c478bd9Sstevel@tonic-gate * is already known. Typically, the previous fpavl_loaded() 12247c478bd9Sstevel@tonic-gate * will have caught this, as both NAME() and PATHNAME() for a 12257c478bd9Sstevel@tonic-gate * link-map are recorded in the FullNode AVL tree. However, 12267c478bd9Sstevel@tonic-gate * instances exist where a file can be replaced (loop-back 12277c478bd9Sstevel@tonic-gate * mounts, bfu, etc.), and reference is made to the original 12287c478bd9Sstevel@tonic-gate * file through a symbolic link. By checking the pathname here, 12297c478bd9Sstevel@tonic-gate * we don't fall through to the dev/inode check and conclude 12307c478bd9Sstevel@tonic-gate * that a new file should be loaded. 12317c478bd9Sstevel@tonic-gate */ 12327c478bd9Sstevel@tonic-gate if ((nname[0] == '/') && (rtld_flags & RT_FL_EXECNAME) && 12337c478bd9Sstevel@tonic-gate ((size = resolvepath(nname, path, (PATH_MAX - 1))) > 0)) { 12347c478bd9Sstevel@tonic-gate path[size] = '\0'; 12357c478bd9Sstevel@tonic-gate 12367c478bd9Sstevel@tonic-gate if (strcmp(nname, path)) { 123724a6229eSrie if ((nlmp = 123824a6229eSrie fpavl_loaded(lml, path, 0)) != NULL) { 12397c478bd9Sstevel@tonic-gate added = 0; 12407c478bd9Sstevel@tonic-gate 12417c478bd9Sstevel@tonic-gate if (append_alias(nlmp, nname, 12427c478bd9Sstevel@tonic-gate &added) == 0) 12437c478bd9Sstevel@tonic-gate return (0); 12447247f888Srie /* BEGIN CSTYLED */ 12457c478bd9Sstevel@tonic-gate if (added) 124610a4fa49Srie DBG_CALL(Dbg_file_skip(LIST(clmp), 12475aefb655Srie NAME(nlmp), nname)); 12487247f888Srie /* END CSTYLED */ 12497c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 12507c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 12517c478bd9Sstevel@tonic-gate return (1); 12527c478bd9Sstevel@tonic-gate } 12537c478bd9Sstevel@tonic-gate 12547c478bd9Sstevel@tonic-gate /* 12557c478bd9Sstevel@tonic-gate * If this pathname hasn't been loaded, save 12567c478bd9Sstevel@tonic-gate * the resolved pathname so that it doesn't 12577c478bd9Sstevel@tonic-gate * have to be recomputed as part of fullpath() 12587c478bd9Sstevel@tonic-gate * processing. 12597c478bd9Sstevel@tonic-gate */ 12608521e5e6Srie if ((fdesc->fd_pname = strdup(path)) == NULL) 12617c478bd9Sstevel@tonic-gate return (0); 12628521e5e6Srie resolved = 1; 12637c478bd9Sstevel@tonic-gate } else { 12647c478bd9Sstevel@tonic-gate /* 12657c478bd9Sstevel@tonic-gate * If the resolved name doesn't differ from the 12667c478bd9Sstevel@tonic-gate * original, save it without duplication. 12677c478bd9Sstevel@tonic-gate * Having fd_pname set indicates that no further 12687c478bd9Sstevel@tonic-gate * resolvepath processing is necessary. 12697c478bd9Sstevel@tonic-gate */ 12707c478bd9Sstevel@tonic-gate fdesc->fd_pname = nname; 12717c478bd9Sstevel@tonic-gate } 12727c478bd9Sstevel@tonic-gate } 12737c478bd9Sstevel@tonic-gate 12747c478bd9Sstevel@tonic-gate if (nlmp = is_devinode_loaded(&status, lml, nname, flags)) { 1275c75e1b9dSrie if (flags & FLG_RT_AUDIT) { 1276c75e1b9dSrie /* 1277c75e1b9dSrie * If we've been requested to load an auditor, 1278c75e1b9dSrie * and an auditor of the same name already 1279c75e1b9dSrie * exists, then the original auditor is used. 1280c75e1b9dSrie */ 1281c75e1b9dSrie DBG_CALL(Dbg_audit_skip(LIST(clmp), 1282c75e1b9dSrie NAME(nlmp), LIST(nlmp)->lm_lmidstr)); 1283c75e1b9dSrie } else { 1284c75e1b9dSrie /* 1285c75e1b9dSrie * Otherwise, if an alternatively named file 1286c75e1b9dSrie * has been found for the same dev/inode, add 1287c75e1b9dSrie * a new name alias, and insert any alias full 1288c75e1b9dSrie * pathname in the link-map lists AVL tree. 1289c75e1b9dSrie */ 12907c478bd9Sstevel@tonic-gate added = 0; 12917c478bd9Sstevel@tonic-gate 12927c478bd9Sstevel@tonic-gate if (append_alias(nlmp, nname, &added) == 0) 12937c478bd9Sstevel@tonic-gate return (0); 12947c478bd9Sstevel@tonic-gate if (added) { 1295c75e1b9dSrie if ((nname[0] == '/') && 1296c75e1b9dSrie (fpavl_insert(lml, nlmp, 1297c75e1b9dSrie nname, 0) == 0)) 12987c478bd9Sstevel@tonic-gate return (0); 1299c75e1b9dSrie DBG_CALL(Dbg_file_skip(LIST(clmp), 1300c75e1b9dSrie NAME(nlmp), nname)); 13017c478bd9Sstevel@tonic-gate } 1302c75e1b9dSrie } 1303c75e1b9dSrie 1304c75e1b9dSrie /* 1305c75e1b9dSrie * Record in the file descriptor the existing object 1306c75e1b9dSrie * that satisfies this open request. 1307c75e1b9dSrie */ 13087c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 13097c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 13107c478bd9Sstevel@tonic-gate return (1); 13117c478bd9Sstevel@tonic-gate } 13127c478bd9Sstevel@tonic-gate 13137c478bd9Sstevel@tonic-gate if ((fd = open(nname, O_RDONLY, 0)) == -1) { 13147c478bd9Sstevel@tonic-gate /* 13157c478bd9Sstevel@tonic-gate * As the file must exist for the previous stat() to 13167c478bd9Sstevel@tonic-gate * have succeeded, record the error condition. 13177c478bd9Sstevel@tonic-gate */ 13187c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 13197c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 13207c478bd9Sstevel@tonic-gate } else { 13217c478bd9Sstevel@tonic-gate Fct *ftp; 13227c478bd9Sstevel@tonic-gate 13237c478bd9Sstevel@tonic-gate if ((ftp = are_u_this(rej, fd, &status, nname)) != 0) { 13247c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 13257c478bd9Sstevel@tonic-gate fdesc->fd_ftp = ftp; 13267c478bd9Sstevel@tonic-gate fdesc->fd_dev = status.st_dev; 13277c478bd9Sstevel@tonic-gate fdesc->fd_ino = status.st_ino; 13287c478bd9Sstevel@tonic-gate fdesc->fd_fd = fd; 13297c478bd9Sstevel@tonic-gate 13307c478bd9Sstevel@tonic-gate /* 13317c478bd9Sstevel@tonic-gate * Trace that this open has succeeded. 13327c478bd9Sstevel@tonic-gate */ 13337c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 13347c478bd9Sstevel@tonic-gate trace_so(clmp, 0, oname, nname, 13357247f888Srie (fdesc->fd_flags & FLG_FD_ALTER), 13367247f888Srie 0); 13377c478bd9Sstevel@tonic-gate } 13387c478bd9Sstevel@tonic-gate return (1); 13397c478bd9Sstevel@tonic-gate } 13407c478bd9Sstevel@tonic-gate (void) close(fd); 13417c478bd9Sstevel@tonic-gate } 13427c478bd9Sstevel@tonic-gate 13437c478bd9Sstevel@tonic-gate } else if (errno != ENOENT) { 13447c478bd9Sstevel@tonic-gate /* 13457c478bd9Sstevel@tonic-gate * If the open() failed for anything other than the file not 13467c478bd9Sstevel@tonic-gate * existing, record the error condition. 13477c478bd9Sstevel@tonic-gate */ 13487c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 13497c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 13507c478bd9Sstevel@tonic-gate } 13517c478bd9Sstevel@tonic-gate 13527c478bd9Sstevel@tonic-gate /* 13537c478bd9Sstevel@tonic-gate * Indicate any rejection. 13547c478bd9Sstevel@tonic-gate */ 13557c478bd9Sstevel@tonic-gate if (rej->rej_type) { 13568521e5e6Srie /* 13578521e5e6Srie * If this pathname was resolved and duplicated, remove the 13588521e5e6Srie * allocated name to simplify the cleanup of the callers. 13598521e5e6Srie */ 13608521e5e6Srie if (resolved) { 13618521e5e6Srie free((void *)fdesc->fd_pname); 13628521e5e6Srie fdesc->fd_pname = NULL; 13638521e5e6Srie } 13647c478bd9Sstevel@tonic-gate rej->rej_name = nname; 13657c478bd9Sstevel@tonic-gate rej->rej_flag = (fdesc->fd_flags & FLG_FD_ALTER); 13665aefb655Srie DBG_CALL(Dbg_file_rejected(lml, rej)); 13677c478bd9Sstevel@tonic-gate } 13687c478bd9Sstevel@tonic-gate return (0); 13697c478bd9Sstevel@tonic-gate } 13707c478bd9Sstevel@tonic-gate 13717c478bd9Sstevel@tonic-gate /* 13727c478bd9Sstevel@tonic-gate * Find a full pathname (it contains a "/"). 13737c478bd9Sstevel@tonic-gate */ 13747c478bd9Sstevel@tonic-gate int 13757c478bd9Sstevel@tonic-gate find_path(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 13767c478bd9Sstevel@tonic-gate Fdesc *fdesc, Rej_desc *rej) 13777c478bd9Sstevel@tonic-gate { 13787c478bd9Sstevel@tonic-gate int err = 0; 13797c478bd9Sstevel@tonic-gate 13807c478bd9Sstevel@tonic-gate /* 13817c478bd9Sstevel@tonic-gate * If directory configuration exists determine if this path is known. 13827c478bd9Sstevel@tonic-gate */ 13837c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DIRCFG) { 13847c478bd9Sstevel@tonic-gate Rtc_obj *obj; 13857c478bd9Sstevel@tonic-gate const char *aname; 13867c478bd9Sstevel@tonic-gate 13877c478bd9Sstevel@tonic-gate if ((obj = elf_config_ent(oname, (Word)elf_hash(oname), 13887c478bd9Sstevel@tonic-gate 0, &aname)) != 0) { 13897c478bd9Sstevel@tonic-gate /* 13907c478bd9Sstevel@tonic-gate * If the configuration file states that this path is a 13917c478bd9Sstevel@tonic-gate * directory, or the path is explicitly defined as 13927c478bd9Sstevel@tonic-gate * non-existent (ie. a unused platform specific 13937c478bd9Sstevel@tonic-gate * library), then go no further. 13947c478bd9Sstevel@tonic-gate */ 13957c478bd9Sstevel@tonic-gate if (obj->co_flags & RTC_OBJ_DIRENT) { 13967c478bd9Sstevel@tonic-gate err = EISDIR; 13977c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & 13987c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == 13997c478bd9Sstevel@tonic-gate RTC_OBJ_NOEXIST) { 14007c478bd9Sstevel@tonic-gate err = ENOENT; 14017c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & RTC_OBJ_ALTER) && 14027c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && (lml == &lml_main)) { 14037c478bd9Sstevel@tonic-gate int ret; 14047c478bd9Sstevel@tonic-gate 14057c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 14067c478bd9Sstevel@tonic-gate /* 14077c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. If 14087c478bd9Sstevel@tonic-gate * this fails, and the alternative is flagged 14097c478bd9Sstevel@tonic-gate * as optional, fall through to open the 14107c478bd9Sstevel@tonic-gate * original path. 14117c478bd9Sstevel@tonic-gate */ 14125aefb655Srie DBG_CALL(Dbg_libs_found(lml, aname, 14135aefb655Srie FLG_FD_ALTER)); 14147c478bd9Sstevel@tonic-gate if (((ret = file_open(0, lml, oname, aname, 14157c478bd9Sstevel@tonic-gate clmp, flags, fdesc, rej)) != 0) || 14167c478bd9Sstevel@tonic-gate ((obj->co_flags & RTC_OBJ_OPTINAL) == 0)) 14177c478bd9Sstevel@tonic-gate return (ret); 14187c478bd9Sstevel@tonic-gate 14197c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 14207c478bd9Sstevel@tonic-gate } 14217c478bd9Sstevel@tonic-gate } 14227c478bd9Sstevel@tonic-gate } 14235aefb655Srie DBG_CALL(Dbg_libs_found(lml, oname, 0)); 14247c478bd9Sstevel@tonic-gate return (file_open(err, lml, oname, oname, clmp, flags, fdesc, rej)); 14257c478bd9Sstevel@tonic-gate } 14267c478bd9Sstevel@tonic-gate 14277c478bd9Sstevel@tonic-gate /* 14287c478bd9Sstevel@tonic-gate * Find a simple filename (it doesn't contain a "/"). 14297c478bd9Sstevel@tonic-gate */ 14307c478bd9Sstevel@tonic-gate static int 14317c478bd9Sstevel@tonic-gate _find_file(Lm_list *lml, const char *oname, const char *nname, Rt_map *clmp, 14327c478bd9Sstevel@tonic-gate uint_t flags, Fdesc *fdesc, Rej_desc *rej, Pnode *dir, int aflag) 14337c478bd9Sstevel@tonic-gate { 14345aefb655Srie DBG_CALL(Dbg_libs_found(lml, nname, aflag)); 14357c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_SEARCH) && 14367c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 14377c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_PTH_TRYING), nname, aflag ? 14387c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_ALTER) : MSG_ORIG(MSG_STR_EMPTY)); 14397c478bd9Sstevel@tonic-gate } 14407c478bd9Sstevel@tonic-gate 14417c478bd9Sstevel@tonic-gate /* 14427c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're about 14437c478bd9Sstevel@tonic-gate * to go search for. The audit library may offer an alternative 14447c478bd9Sstevel@tonic-gate * dependency, or indicate that this dependency should be ignored. 14457c478bd9Sstevel@tonic-gate */ 14467c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 14477c478bd9Sstevel@tonic-gate char *aname = audit_objsearch(clmp, nname, dir->p_orig); 14487c478bd9Sstevel@tonic-gate 14497247f888Srie if (aname == 0) { 14507247f888Srie DBG_CALL(Dbg_audit_terminate(lml, nname)); 14517c478bd9Sstevel@tonic-gate return (0); 14527247f888Srie } 14537247f888Srie 14547247f888Srie /* 14557247f888Srie * Protect ourselves from auditor mischief, by copying any 14567247f888Srie * alternative name over the present name (the present name is 14577247f888Srie * maintained in a static buffer - see elf_get_so()); 14587247f888Srie */ 14597247f888Srie if (nname != aname) 14607247f888Srie (void) strncpy((char *)nname, aname, PATH_MAX); 14617c478bd9Sstevel@tonic-gate } 14627c478bd9Sstevel@tonic-gate return (file_open(0, lml, oname, nname, clmp, flags, fdesc, rej)); 14637c478bd9Sstevel@tonic-gate } 14647c478bd9Sstevel@tonic-gate 1465390b98b5Srie static int 14667c478bd9Sstevel@tonic-gate find_file(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 14677c478bd9Sstevel@tonic-gate Fdesc *fdesc, Rej_desc *rej, Pnode *dir, Word * strhash, size_t olen) 14687c478bd9Sstevel@tonic-gate { 14697c478bd9Sstevel@tonic-gate static Rtc_obj Obj = { 0 }; 14707c478bd9Sstevel@tonic-gate Rtc_obj * dobj; 14717c478bd9Sstevel@tonic-gate const char *nname = oname; 14727c478bd9Sstevel@tonic-gate 14737c478bd9Sstevel@tonic-gate if (dir->p_name == 0) 14747c478bd9Sstevel@tonic-gate return (0); 14757c478bd9Sstevel@tonic-gate if (dir->p_info) { 14767c478bd9Sstevel@tonic-gate dobj = (Rtc_obj *)dir->p_info; 14777c478bd9Sstevel@tonic-gate if ((dobj->co_flags & 14787c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 14797c478bd9Sstevel@tonic-gate return (0); 14807c478bd9Sstevel@tonic-gate } else 14817c478bd9Sstevel@tonic-gate dobj = 0; 14827c478bd9Sstevel@tonic-gate 14837c478bd9Sstevel@tonic-gate /* 14847c478bd9Sstevel@tonic-gate * If configuration information exists see if this directory/file 14857c478bd9Sstevel@tonic-gate * combination exists. 14867c478bd9Sstevel@tonic-gate */ 14877c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_DIRCFG) && 14887c478bd9Sstevel@tonic-gate ((dobj == 0) || (dobj->co_id != 0))) { 14897c478bd9Sstevel@tonic-gate Rtc_obj *fobj; 14907c478bd9Sstevel@tonic-gate const char *alt = 0; 14917c478bd9Sstevel@tonic-gate 14927c478bd9Sstevel@tonic-gate /* 14937c478bd9Sstevel@tonic-gate * If this pnode has not yet been searched for in the 14947c478bd9Sstevel@tonic-gate * configuration file go find it. 14957c478bd9Sstevel@tonic-gate */ 14967c478bd9Sstevel@tonic-gate if (dobj == 0) { 14977c478bd9Sstevel@tonic-gate dobj = elf_config_ent(dir->p_name, 14987c478bd9Sstevel@tonic-gate (Word)elf_hash(dir->p_name), 0, 0); 14997c478bd9Sstevel@tonic-gate if (dobj == 0) 15007c478bd9Sstevel@tonic-gate dobj = &Obj; 15017c478bd9Sstevel@tonic-gate dir->p_info = (void *)dobj; 15027c478bd9Sstevel@tonic-gate 15037c478bd9Sstevel@tonic-gate if ((dobj->co_flags & (RTC_OBJ_NOEXIST | 15047c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 15057c478bd9Sstevel@tonic-gate return (0); 15067c478bd9Sstevel@tonic-gate } 15077c478bd9Sstevel@tonic-gate 15087c478bd9Sstevel@tonic-gate /* 15097c478bd9Sstevel@tonic-gate * If we found a directory search for the file. 15107c478bd9Sstevel@tonic-gate */ 15117c478bd9Sstevel@tonic-gate if (dobj->co_id != 0) { 15127c478bd9Sstevel@tonic-gate if (*strhash == 0) 15137c478bd9Sstevel@tonic-gate *strhash = (Word)elf_hash(nname); 15147c478bd9Sstevel@tonic-gate fobj = elf_config_ent(nname, *strhash, 15157c478bd9Sstevel@tonic-gate dobj->co_id, &alt); 15167c478bd9Sstevel@tonic-gate 15177c478bd9Sstevel@tonic-gate /* 15187c478bd9Sstevel@tonic-gate * If this object specifically does not exist, or the 15197c478bd9Sstevel@tonic-gate * object can't be found in a know-all-entries 15207c478bd9Sstevel@tonic-gate * directory, continue looking. If the object does 15217c478bd9Sstevel@tonic-gate * exist determine if an alternative object exists. 15227c478bd9Sstevel@tonic-gate */ 15237c478bd9Sstevel@tonic-gate if (fobj == 0) { 15247c478bd9Sstevel@tonic-gate if (dobj->co_flags & RTC_OBJ_ALLENTS) 15257c478bd9Sstevel@tonic-gate return (0); 15267c478bd9Sstevel@tonic-gate } else { 15277c478bd9Sstevel@tonic-gate if ((fobj->co_flags & (RTC_OBJ_NOEXIST | 15287c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 15297c478bd9Sstevel@tonic-gate return (0); 15307c478bd9Sstevel@tonic-gate 15317c478bd9Sstevel@tonic-gate if ((fobj->co_flags & RTC_OBJ_ALTER) && 15327c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && 15337c478bd9Sstevel@tonic-gate (lml == &lml_main)) { 15347c478bd9Sstevel@tonic-gate int ret; 15357c478bd9Sstevel@tonic-gate 15367c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 15377c478bd9Sstevel@tonic-gate /* 15387c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. 15397c478bd9Sstevel@tonic-gate * If this fails, and the alternative is 15407c478bd9Sstevel@tonic-gate * flagged as optional, fall through to 15417c478bd9Sstevel@tonic-gate * open the original path. 15427c478bd9Sstevel@tonic-gate */ 15437c478bd9Sstevel@tonic-gate ret = _find_file(lml, oname, alt, clmp, 15447c478bd9Sstevel@tonic-gate flags, fdesc, rej, dir, 1); 15457c478bd9Sstevel@tonic-gate if (ret || ((fobj->co_flags & 15467c478bd9Sstevel@tonic-gate RTC_OBJ_OPTINAL) == 0)) 15477c478bd9Sstevel@tonic-gate return (ret); 15487c478bd9Sstevel@tonic-gate 15497c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 15507c478bd9Sstevel@tonic-gate } 15517c478bd9Sstevel@tonic-gate } 15527c478bd9Sstevel@tonic-gate } 15537c478bd9Sstevel@tonic-gate } 15547c478bd9Sstevel@tonic-gate 15557c478bd9Sstevel@tonic-gate /* 15567c478bd9Sstevel@tonic-gate * Protect ourselves from building an invalid pathname. 15577c478bd9Sstevel@tonic-gate */ 15587c478bd9Sstevel@tonic-gate if ((olen + dir->p_len + 1) >= PATH_MAX) { 15595aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), nname, 15607c478bd9Sstevel@tonic-gate strerror(ENAMETOOLONG)); 15617c478bd9Sstevel@tonic-gate return (0); 15627c478bd9Sstevel@tonic-gate } 15637c478bd9Sstevel@tonic-gate if ((nname = (LM_GET_SO(clmp)(dir->p_name, nname))) == 0) 15647c478bd9Sstevel@tonic-gate return (0); 15657c478bd9Sstevel@tonic-gate 15667c478bd9Sstevel@tonic-gate return (_find_file(lml, oname, nname, clmp, flags, fdesc, rej, dir, 0)); 15677c478bd9Sstevel@tonic-gate } 15687c478bd9Sstevel@tonic-gate 15697c478bd9Sstevel@tonic-gate /* 15707c478bd9Sstevel@tonic-gate * A unique file has been opened. Create a link-map to represent it, and 15717c478bd9Sstevel@tonic-gate * process the various names by which it can be referenced. 15727c478bd9Sstevel@tonic-gate */ 15737c478bd9Sstevel@tonic-gate static Rt_map * 1574390b98b5Srie load_file(Lm_list *lml, Aliste lmco, Fdesc *fdesc) 15757c478bd9Sstevel@tonic-gate { 15767c478bd9Sstevel@tonic-gate const char *oname = fdesc->fd_oname; 15777c478bd9Sstevel@tonic-gate const char *nname = fdesc->fd_nname; 15787c478bd9Sstevel@tonic-gate Rt_map *nlmp; 15797c478bd9Sstevel@tonic-gate 15807c478bd9Sstevel@tonic-gate /* 15817c478bd9Sstevel@tonic-gate * Typically we call fct_map_so() with the full pathname of the opened 15827c478bd9Sstevel@tonic-gate * file (nname) and the name that started the search (oname), thus for 15837c478bd9Sstevel@tonic-gate * a typical dependency on libc this would be /usr/lib/libc.so.1 and 15847c478bd9Sstevel@tonic-gate * libc.so.1 (DT_NEEDED). The original name is maintained on an ALIAS 15857c478bd9Sstevel@tonic-gate * list for comparison when bringing in new dependencies. If the user 15867c478bd9Sstevel@tonic-gate * specified name as a full path (from a dlopen() for example) then 15877c478bd9Sstevel@tonic-gate * there's no need to create an ALIAS. 15887c478bd9Sstevel@tonic-gate */ 15897c478bd9Sstevel@tonic-gate if (strcmp(oname, nname) == 0) 15907c478bd9Sstevel@tonic-gate oname = 0; 15917c478bd9Sstevel@tonic-gate 15927c478bd9Sstevel@tonic-gate /* 15937c478bd9Sstevel@tonic-gate * A new file has been opened, now map it into the process. Close the 15947c478bd9Sstevel@tonic-gate * original file so as not to accumulate file descriptors. 15957c478bd9Sstevel@tonic-gate */ 15967c478bd9Sstevel@tonic-gate nlmp = ((fdesc->fd_ftp)->fct_map_so)(lml, lmco, nname, oname, 15977c478bd9Sstevel@tonic-gate fdesc->fd_fd); 15987c478bd9Sstevel@tonic-gate (void) close(fdesc->fd_fd); 15997c478bd9Sstevel@tonic-gate fdesc->fd_fd = 0; 16007c478bd9Sstevel@tonic-gate 16017c478bd9Sstevel@tonic-gate if (nlmp == 0) 16027c478bd9Sstevel@tonic-gate return (0); 16037c478bd9Sstevel@tonic-gate 16047c478bd9Sstevel@tonic-gate /* 16057c478bd9Sstevel@tonic-gate * Save the dev/inode information for later comparisons. 16067c478bd9Sstevel@tonic-gate */ 16077c478bd9Sstevel@tonic-gate STDEV(nlmp) = fdesc->fd_dev; 16087c478bd9Sstevel@tonic-gate STINO(nlmp) = fdesc->fd_ino; 16097c478bd9Sstevel@tonic-gate 16107c478bd9Sstevel@tonic-gate /* 16117c478bd9Sstevel@tonic-gate * Insert the names of this link-map into the FullpathNode AVL tree. 16127c478bd9Sstevel@tonic-gate * Save both the NAME() and PATHNAME() is they differ. 16137c478bd9Sstevel@tonic-gate * 16147c478bd9Sstevel@tonic-gate * If this is an OBJECT file, don't insert it yet as this is only a 16157c478bd9Sstevel@tonic-gate * temporary link-map. During elf_obj_fini() the final link-map is 16167c478bd9Sstevel@tonic-gate * created, and its names will be inserted in the FullpathNode AVL 16177c478bd9Sstevel@tonic-gate * tree at that time. 16187c478bd9Sstevel@tonic-gate */ 16197c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_OBJECT) == 0) { 16207c478bd9Sstevel@tonic-gate /* 16217c478bd9Sstevel@tonic-gate * Update the objects full path information if necessary. 162211a2bb38Srie * Note, with pathname expansion in effect, the fd_pname will 162311a2bb38Srie * be used as PATHNAME(). This allocated string will be freed 162411a2bb38Srie * should this object be deleted. However, without pathname 162511a2bb38Srie * expansion, the fd_name should be freed now, as it is no 162611a2bb38Srie * longer referenced. 16277c478bd9Sstevel@tonic-gate */ 162811a2bb38Srie if (FLAGS1(nlmp) & FL1_RT_RELATIVE) 16297c478bd9Sstevel@tonic-gate (void) fullpath(nlmp, fdesc->fd_pname); 163011a2bb38Srie else if (fdesc->fd_pname != fdesc->fd_nname) 163111a2bb38Srie free((void *)fdesc->fd_pname); 16327c478bd9Sstevel@tonic-gate fdesc->fd_pname = 0; 16337c478bd9Sstevel@tonic-gate 16347c478bd9Sstevel@tonic-gate if ((NAME(nlmp)[0] == '/') && (fpavl_insert(lml, nlmp, 16357c478bd9Sstevel@tonic-gate NAME(nlmp), fdesc->fd_avlwhere) == 0)) { 16367c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 16377c478bd9Sstevel@tonic-gate return (0); 16387c478bd9Sstevel@tonic-gate } 16397c478bd9Sstevel@tonic-gate if (((NAME(nlmp)[0] != '/') || 16407c478bd9Sstevel@tonic-gate (NAME(nlmp) != PATHNAME(nlmp))) && 16417c478bd9Sstevel@tonic-gate (fpavl_insert(lml, nlmp, PATHNAME(nlmp), 0) == 0)) { 16427c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 16437c478bd9Sstevel@tonic-gate return (0); 16447c478bd9Sstevel@tonic-gate } 16457c478bd9Sstevel@tonic-gate } 16467c478bd9Sstevel@tonic-gate 16477c478bd9Sstevel@tonic-gate /* 16487c478bd9Sstevel@tonic-gate * If we're processing an alternative object reset the original name 16497c478bd9Sstevel@tonic-gate * for possible $ORIGIN processing. 16507c478bd9Sstevel@tonic-gate */ 16517c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_ALTER) { 16527c478bd9Sstevel@tonic-gate const char *odir; 16537c478bd9Sstevel@tonic-gate char *ndir; 16547c478bd9Sstevel@tonic-gate size_t olen; 16557c478bd9Sstevel@tonic-gate 16567c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= FLG_RT_ALTER; 16577c478bd9Sstevel@tonic-gate 16587c478bd9Sstevel@tonic-gate /* 16597c478bd9Sstevel@tonic-gate * If we were given a pathname containing a slash then the 16607c478bd9Sstevel@tonic-gate * original name is still in oname. Otherwise the original 16617c478bd9Sstevel@tonic-gate * directory is in dir->p_name (which is all we need for 16627c478bd9Sstevel@tonic-gate * $ORIGIN). 16637c478bd9Sstevel@tonic-gate */ 16647c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_SLASH) { 16657c478bd9Sstevel@tonic-gate char *ofil; 16667c478bd9Sstevel@tonic-gate 16677c478bd9Sstevel@tonic-gate odir = oname; 16687c478bd9Sstevel@tonic-gate ofil = strrchr(oname, '/'); 16697c478bd9Sstevel@tonic-gate olen = ofil - odir + 1; 16707c478bd9Sstevel@tonic-gate } else { 16717c478bd9Sstevel@tonic-gate odir = fdesc->fd_odir; 16727c478bd9Sstevel@tonic-gate olen = strlen(odir) + 1; 16737c478bd9Sstevel@tonic-gate } 16747c478bd9Sstevel@tonic-gate 16757c478bd9Sstevel@tonic-gate if ((ndir = (char *)malloc(olen)) == 0) { 16767c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 16777c478bd9Sstevel@tonic-gate return (0); 16787c478bd9Sstevel@tonic-gate } 16797c478bd9Sstevel@tonic-gate (void) strncpy(ndir, odir, olen); 16807c478bd9Sstevel@tonic-gate ndir[--olen] = '\0'; 16817c478bd9Sstevel@tonic-gate 16827c478bd9Sstevel@tonic-gate ORIGNAME(nlmp) = ndir; 16837c478bd9Sstevel@tonic-gate DIRSZ(nlmp) = olen; 16847c478bd9Sstevel@tonic-gate } 16857c478bd9Sstevel@tonic-gate 16867c478bd9Sstevel@tonic-gate /* 1687390b98b5Srie * Identify this as a new object. 16887c478bd9Sstevel@tonic-gate */ 1689390b98b5Srie FLAGS(nlmp) |= FLG_RT_NEWLOAD; 16907c478bd9Sstevel@tonic-gate 16917c478bd9Sstevel@tonic-gate return (nlmp); 16927c478bd9Sstevel@tonic-gate } 16937c478bd9Sstevel@tonic-gate 16947c478bd9Sstevel@tonic-gate /* 16957c478bd9Sstevel@tonic-gate * This function loads the named file and returns a pointer to its link map. 16967c478bd9Sstevel@tonic-gate * It is assumed that the caller has already checked that the file is not 16977c478bd9Sstevel@tonic-gate * already loaded before calling this function (refer is_so_loaded()). 16987c478bd9Sstevel@tonic-gate * Find and open the file, map it into memory, add it to the end of the list 16997c478bd9Sstevel@tonic-gate * of link maps and return a pointer to the new link map. Return 0 on error. 17007c478bd9Sstevel@tonic-gate */ 17017c478bd9Sstevel@tonic-gate static Rt_map * 17027c478bd9Sstevel@tonic-gate load_so(Lm_list *lml, Aliste lmco, const char *oname, Rt_map *clmp, 1703fb1354edSrie uint_t flags, Fdesc *nfdp, Rej_desc *rej) 17047c478bd9Sstevel@tonic-gate { 17057c478bd9Sstevel@tonic-gate char *name; 17067c478bd9Sstevel@tonic-gate uint_t slash = 0; 17077c478bd9Sstevel@tonic-gate size_t olen; 1708fb1354edSrie Fdesc fdesc = { 0 }; 17097c478bd9Sstevel@tonic-gate Pnode *dir; 17107c478bd9Sstevel@tonic-gate 17117c478bd9Sstevel@tonic-gate /* 17127c478bd9Sstevel@tonic-gate * If the file is the run time linker then it's already loaded. 17137c478bd9Sstevel@tonic-gate */ 17147c478bd9Sstevel@tonic-gate if (interp && (strcmp(oname, NAME(lml_rtld.lm_head)) == 0)) 17157c478bd9Sstevel@tonic-gate return (lml_rtld.lm_head); 17167c478bd9Sstevel@tonic-gate 17177c478bd9Sstevel@tonic-gate /* 17188af2c5b9Srie * If this isn't a hardware capabilities pathname, which is already a 17197c478bd9Sstevel@tonic-gate * full, duplicated pathname, determine whether the pathname contains 17207c478bd9Sstevel@tonic-gate * a slash, and if not determine the input filename (for max path 17217c478bd9Sstevel@tonic-gate * length verification). 17227c478bd9Sstevel@tonic-gate */ 17237c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) == 0) { 17247c478bd9Sstevel@tonic-gate const char *str; 17257c478bd9Sstevel@tonic-gate 17267c478bd9Sstevel@tonic-gate for (str = oname; *str; str++) { 17277c478bd9Sstevel@tonic-gate if (*str == '/') { 17287c478bd9Sstevel@tonic-gate slash++; 17297c478bd9Sstevel@tonic-gate break; 17307c478bd9Sstevel@tonic-gate } 17317c478bd9Sstevel@tonic-gate } 17327c478bd9Sstevel@tonic-gate if (slash == 0) 17337c478bd9Sstevel@tonic-gate olen = (str - oname) + 1; 17347c478bd9Sstevel@tonic-gate } 17357c478bd9Sstevel@tonic-gate 17367c478bd9Sstevel@tonic-gate /* 17377c478bd9Sstevel@tonic-gate * If we are passed a 'null' link-map this means that this is the first 17387c478bd9Sstevel@tonic-gate * object to be loaded on this link-map list. In that case we set the 17397c478bd9Sstevel@tonic-gate * link-map to ld.so.1's link-map. 17407c478bd9Sstevel@tonic-gate * 17417c478bd9Sstevel@tonic-gate * This link-map is referenced to determine what lookup rules to use 17427c478bd9Sstevel@tonic-gate * when searching for files. By using ld.so.1's we are defaulting to 17437c478bd9Sstevel@tonic-gate * ELF look-up rules. 17447c478bd9Sstevel@tonic-gate * 17457c478bd9Sstevel@tonic-gate * Note: This case happens when loading the first object onto 17467c478bd9Sstevel@tonic-gate * the plt_tracing link-map. 17477c478bd9Sstevel@tonic-gate */ 17487c478bd9Sstevel@tonic-gate if (clmp == 0) 17497c478bd9Sstevel@tonic-gate clmp = lml_rtld.lm_head; 17507c478bd9Sstevel@tonic-gate 17517c478bd9Sstevel@tonic-gate /* 17527c478bd9Sstevel@tonic-gate * If this path resulted from a $HWCAP specification, then the best 17537c478bd9Sstevel@tonic-gate * hardware capability object has already been establish, and is 17547c478bd9Sstevel@tonic-gate * available in the calling file descriptor. Perform some minor book- 17557c478bd9Sstevel@tonic-gate * keeping so that we can fall through into common code. 17567c478bd9Sstevel@tonic-gate */ 17577c478bd9Sstevel@tonic-gate if (flags & FLG_RT_HWCAP) { 17587c478bd9Sstevel@tonic-gate /* 1759fb1354edSrie * If this object is already loaded, we're done. 17607c478bd9Sstevel@tonic-gate */ 1761fb1354edSrie if (nfdp->fd_lmp) 1762fb1354edSrie return (nfdp->fd_lmp); 17637c478bd9Sstevel@tonic-gate 17647c478bd9Sstevel@tonic-gate /* 17657c478bd9Sstevel@tonic-gate * Obtain the avl index for this object. 17667c478bd9Sstevel@tonic-gate */ 1767fb1354edSrie (void) fpavl_loaded(lml, nfdp->fd_nname, &(nfdp->fd_avlwhere)); 1768bbf522bdSrie 1769bbf522bdSrie /* 1770fb1354edSrie * If the name and resolved pathname differ, duplicate the path 17718af2c5b9Srie * name once more to provide for generic cleanup by the caller. 1772bbf522bdSrie */ 1773fb1354edSrie if (nfdp->fd_pname && (nfdp->fd_nname != nfdp->fd_pname)) { 1774bbf522bdSrie char *pname; 1775bbf522bdSrie 17768521e5e6Srie if ((pname = strdup(nfdp->fd_pname)) == NULL) 1777bbf522bdSrie return (0); 1778fb1354edSrie nfdp->fd_pname = pname; 1779bbf522bdSrie } 17807c478bd9Sstevel@tonic-gate } else if (slash) { 17817c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 17827c478bd9Sstevel@tonic-gate 1783fb1354edSrie *nfdp = fdesc; 1784fb1354edSrie nfdp->fd_flags = FLG_FD_SLASH; 17857c478bd9Sstevel@tonic-gate 1786fb1354edSrie if (find_path(lml, oname, clmp, flags, nfdp, &_rej) == 0) { 178731fdd7caSab196087 rejection_inherit(rej, &_rej); 17887c478bd9Sstevel@tonic-gate return (0); 17897c478bd9Sstevel@tonic-gate } 17907c478bd9Sstevel@tonic-gate 17917c478bd9Sstevel@tonic-gate /* 17927c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 17937c478bd9Sstevel@tonic-gate */ 1794fb1354edSrie if (nfdp->fd_lmp) 1795fb1354edSrie return (nfdp->fd_lmp); 17967c478bd9Sstevel@tonic-gate 17977c478bd9Sstevel@tonic-gate } else { 17987c478bd9Sstevel@tonic-gate /* 17997c478bd9Sstevel@tonic-gate * No '/' - for each directory on list, make a pathname using 18007c478bd9Sstevel@tonic-gate * that directory and filename and try to open that file. 18017c478bd9Sstevel@tonic-gate */ 18027c478bd9Sstevel@tonic-gate Pnode *dirlist = (Pnode *)0; 18037c478bd9Sstevel@tonic-gate Word strhash = 0; 1804fb1354edSrie #if !defined(ISSOLOAD_BASENAME_DISABLED) 1805fb1354edSrie Rt_map *nlmp; 1806fb1354edSrie #endif 18075aefb655Srie DBG_CALL(Dbg_libs_find(lml, oname)); 18087c478bd9Sstevel@tonic-gate 18097c478bd9Sstevel@tonic-gate #if !defined(ISSOLOAD_BASENAME_DISABLED) 18100aa3cd4dSrie if ((nlmp = is_so_loaded(lml, oname))) 18117c478bd9Sstevel@tonic-gate return (nlmp); 18127c478bd9Sstevel@tonic-gate #endif 18137c478bd9Sstevel@tonic-gate /* 18147c478bd9Sstevel@tonic-gate * Make sure we clear the file descriptor new name in case the 18157c478bd9Sstevel@tonic-gate * following directory search doesn't provide any directories 18167c478bd9Sstevel@tonic-gate * (odd, but this can be forced with a -znodefaultlib test). 18177c478bd9Sstevel@tonic-gate */ 1818fb1354edSrie *nfdp = fdesc; 18197c478bd9Sstevel@tonic-gate for (dir = get_next_dir(&dirlist, clmp, flags); dir; 18207c478bd9Sstevel@tonic-gate dir = get_next_dir(&dirlist, clmp, flags)) { 18217c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 18227c478bd9Sstevel@tonic-gate 1823fb1354edSrie *nfdp = fdesc; 18247c478bd9Sstevel@tonic-gate 18257c478bd9Sstevel@tonic-gate /* 18267c478bd9Sstevel@tonic-gate * Try and locate this file. Make sure to clean up 18277c478bd9Sstevel@tonic-gate * any rejection information should the file have 18287c478bd9Sstevel@tonic-gate * been found, but not appropriate. 18297c478bd9Sstevel@tonic-gate */ 1830fb1354edSrie if (find_file(lml, oname, clmp, flags, nfdp, &_rej, 18317c478bd9Sstevel@tonic-gate dir, &strhash, olen) == 0) { 183231fdd7caSab196087 rejection_inherit(rej, &_rej); 18337c478bd9Sstevel@tonic-gate continue; 18347c478bd9Sstevel@tonic-gate } 18357c478bd9Sstevel@tonic-gate 18367c478bd9Sstevel@tonic-gate /* 18377c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 18387c478bd9Sstevel@tonic-gate */ 1839fb1354edSrie if (nfdp->fd_lmp) 1840fb1354edSrie return (nfdp->fd_lmp); 18417c478bd9Sstevel@tonic-gate 1842fb1354edSrie nfdp->fd_odir = dir->p_name; 18437c478bd9Sstevel@tonic-gate break; 18447c478bd9Sstevel@tonic-gate } 18457c478bd9Sstevel@tonic-gate 18467c478bd9Sstevel@tonic-gate /* 18477c478bd9Sstevel@tonic-gate * If the file couldn't be loaded, do another comparison of 18487c478bd9Sstevel@tonic-gate * loaded files using just the basename. This catches folks 18497c478bd9Sstevel@tonic-gate * who may have loaded multiple full pathname files (possibly 18507c478bd9Sstevel@tonic-gate * from setxid applications) to satisfy dependency relationships 18517c478bd9Sstevel@tonic-gate * (i.e., a file might have a dependency on foo.so.1 which has 18527c478bd9Sstevel@tonic-gate * already been opened using its full pathname). 18537c478bd9Sstevel@tonic-gate */ 18548521e5e6Srie if (nfdp->fd_nname == NULL) 18550aa3cd4dSrie return (is_so_loaded(lml, oname)); 18567c478bd9Sstevel@tonic-gate } 18577c478bd9Sstevel@tonic-gate 18587c478bd9Sstevel@tonic-gate /* 18597c478bd9Sstevel@tonic-gate * Duplicate the file name so that NAME() is available in core files. 18607c478bd9Sstevel@tonic-gate * Note, that hardware capability names are already duplicated, but 18617c478bd9Sstevel@tonic-gate * they get duplicated once more to insure consistent cleanup in the 18627c478bd9Sstevel@tonic-gate * event of an error condition. 18637c478bd9Sstevel@tonic-gate */ 18648521e5e6Srie if ((name = strdup(nfdp->fd_nname)) == NULL) 18657c478bd9Sstevel@tonic-gate return (0); 1866fb1354edSrie 1867fb1354edSrie if (nfdp->fd_nname == nfdp->fd_pname) 1868fb1354edSrie nfdp->fd_nname = nfdp->fd_pname = name; 18697c478bd9Sstevel@tonic-gate else 1870fb1354edSrie nfdp->fd_nname = name; 18717c478bd9Sstevel@tonic-gate 18727c478bd9Sstevel@tonic-gate /* 18737c478bd9Sstevel@tonic-gate * Finish mapping the file and return the link-map descriptor. Note, 18747c478bd9Sstevel@tonic-gate * if this request originated from a HWCAP request, re-establish the 18757c478bd9Sstevel@tonic-gate * fdesc information. For single paged objects, such as filters, the 18767c478bd9Sstevel@tonic-gate * original mapping may have been sufficient to capture the file, thus 18777c478bd9Sstevel@tonic-gate * this mapping needs to be reset to insure it doesn't mistakenly get 18787c478bd9Sstevel@tonic-gate * unmapped as part of HWCAP cleanup. 18797c478bd9Sstevel@tonic-gate */ 1880fb1354edSrie return (load_file(lml, lmco, nfdp)); 18817c478bd9Sstevel@tonic-gate } 18827c478bd9Sstevel@tonic-gate 18837c478bd9Sstevel@tonic-gate /* 18847c478bd9Sstevel@tonic-gate * Trace an attempt to load an object. 18857c478bd9Sstevel@tonic-gate */ 18867247f888Srie int 18877247f888Srie load_trace(Lm_list *lml, const char **oname, Rt_map *clmp) 18887c478bd9Sstevel@tonic-gate { 18897247f888Srie const char *name = *oname; 18907247f888Srie 18917c478bd9Sstevel@tonic-gate /* 18927c478bd9Sstevel@tonic-gate * First generate any ldd(1) diagnostics. 18937c478bd9Sstevel@tonic-gate */ 18947c478bd9Sstevel@tonic-gate if ((lml->lm_flags & (LML_FLG_TRC_VERBOSE | LML_FLG_TRC_SEARCH)) && 18957c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) 18967c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, NAME(clmp)); 18977c478bd9Sstevel@tonic-gate 18987c478bd9Sstevel@tonic-gate /* 18997c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're 19007c478bd9Sstevel@tonic-gate * about to go search for. 19017c478bd9Sstevel@tonic-gate */ 19027c478bd9Sstevel@tonic-gate if (((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_ACTIVITY) && 19037c478bd9Sstevel@tonic-gate (lml == LIST(clmp))) 19047c478bd9Sstevel@tonic-gate audit_activity(clmp, LA_ACT_ADD); 19057c478bd9Sstevel@tonic-gate 19067c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 19077247f888Srie char *aname = audit_objsearch(clmp, name, LA_SER_ORIG); 19087c478bd9Sstevel@tonic-gate 19097c478bd9Sstevel@tonic-gate /* 19107c478bd9Sstevel@tonic-gate * The auditor can indicate that this object should be ignored. 19117c478bd9Sstevel@tonic-gate */ 19127247f888Srie if (aname == NULL) { 19137247f888Srie DBG_CALL(Dbg_audit_terminate(lml, name)); 19147c478bd9Sstevel@tonic-gate return (0); 19157c478bd9Sstevel@tonic-gate } 19167c478bd9Sstevel@tonic-gate 19177c478bd9Sstevel@tonic-gate /* 19187247f888Srie * Protect ourselves from auditor mischief, by duplicating any 19197247f888Srie * alternative name. The original name has been allocated from 19207247f888Srie * expand(), so free this allocation before using the audit 19217247f888Srie * alternative. 19227c478bd9Sstevel@tonic-gate */ 19237247f888Srie if (name != aname) { 19247247f888Srie if ((aname = strdup(aname)) == NULL) { 19257247f888Srie eprintf(lml, ERR_FATAL, 19267247f888Srie MSG_INTL(MSG_GEN_AUDITERM), name); 19277247f888Srie return (0); 19287247f888Srie } 19297247f888Srie free((void *)*oname); 19307247f888Srie *oname = aname; 19317c478bd9Sstevel@tonic-gate } 19327c478bd9Sstevel@tonic-gate } 19337247f888Srie return (1); 19347c478bd9Sstevel@tonic-gate } 19357c478bd9Sstevel@tonic-gate 19367c478bd9Sstevel@tonic-gate /* 19377c478bd9Sstevel@tonic-gate * Having loaded an object and created a link-map to describe it, finish 19387c478bd9Sstevel@tonic-gate * processing this stage, including verifying any versioning requirements, 19397c478bd9Sstevel@tonic-gate * updating the objects mode, creating a handle if necessary, and adding this 19407c478bd9Sstevel@tonic-gate * object to existing handles if required. 19417c478bd9Sstevel@tonic-gate */ 1942390b98b5Srie static int 19437c478bd9Sstevel@tonic-gate load_finish(Lm_list *lml, const char *name, Rt_map *clmp, int nmode, 19447c478bd9Sstevel@tonic-gate uint_t flags, Grp_hdl **hdl, Rt_map *nlmp) 19457c478bd9Sstevel@tonic-gate { 1946*cce0e03bSab196087 Aliste idx; 1947*cce0e03bSab196087 Grp_hdl *ghp; 19487c478bd9Sstevel@tonic-gate int promote; 19497c478bd9Sstevel@tonic-gate 19507c478bd9Sstevel@tonic-gate /* 19517c478bd9Sstevel@tonic-gate * If this dependency is associated with a required version insure that 19527c478bd9Sstevel@tonic-gate * the version is present in the loaded file. 19537c478bd9Sstevel@tonic-gate */ 19547c478bd9Sstevel@tonic-gate if (((rtld_flags & RT_FL_NOVERSION) == 0) && 19557c478bd9Sstevel@tonic-gate (FCT(clmp) == &elf_fct) && VERNEED(clmp) && 19567c478bd9Sstevel@tonic-gate (LM_VERIFY_VERS(clmp)(name, clmp, nlmp) == 0)) 19577c478bd9Sstevel@tonic-gate return (0); 19587c478bd9Sstevel@tonic-gate 19597c478bd9Sstevel@tonic-gate /* 19607c478bd9Sstevel@tonic-gate * If this object has indicated that it should be isolated as a group 19617c478bd9Sstevel@tonic-gate * (DT_FLAGS_1 contains DF_1_GROUP - object was built with -B group), 19627c478bd9Sstevel@tonic-gate * or if the callers direct bindings indicate it should be isolated as 19637c478bd9Sstevel@tonic-gate * a group (DYNINFO flags contains FLG_DI_GROUP - dependency followed 19647c478bd9Sstevel@tonic-gate * -zgroupperm), establish the appropriate mode. 19657c478bd9Sstevel@tonic-gate * 19667c478bd9Sstevel@tonic-gate * The intent of an object defining itself as a group is to isolate the 19677c478bd9Sstevel@tonic-gate * relocation of the group within its own members, however, unless 19687c478bd9Sstevel@tonic-gate * opened through dlopen(), in which case we assume dlsym() will be used 19697c478bd9Sstevel@tonic-gate * to located symbols in the new object, we still need to associate it 19707c478bd9Sstevel@tonic-gate * with the caller for it to be bound with. This is equivalent to a 19717c478bd9Sstevel@tonic-gate * dlopen(RTLD_GROUP) and dlsym() using the returned handle. 19727c478bd9Sstevel@tonic-gate */ 19737c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) | flags) & FLG_RT_SETGROUP) { 19747c478bd9Sstevel@tonic-gate nmode &= ~RTLD_WORLD; 19757c478bd9Sstevel@tonic-gate nmode |= RTLD_GROUP; 19767c478bd9Sstevel@tonic-gate 19777c478bd9Sstevel@tonic-gate /* 19787c478bd9Sstevel@tonic-gate * If the object wasn't explicitly dlopen()'ed associate it with 19797c478bd9Sstevel@tonic-gate * the parent. 19807c478bd9Sstevel@tonic-gate */ 19819a411307Srie if ((flags & FLG_RT_HANDLE) == 0) 19827c478bd9Sstevel@tonic-gate nmode |= RTLD_PARENT; 19837c478bd9Sstevel@tonic-gate } 19847c478bd9Sstevel@tonic-gate 19857c478bd9Sstevel@tonic-gate /* 19867c478bd9Sstevel@tonic-gate * Establish new mode and flags. 19877c478bd9Sstevel@tonic-gate * 19887c478bd9Sstevel@tonic-gate * For patch backward compatibility, the following use of update_mode() 19897c478bd9Sstevel@tonic-gate * is disabled. 19907c478bd9Sstevel@tonic-gate */ 19917c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 19927c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 19937c478bd9Sstevel@tonic-gate promote = MODE(nlmp) |= 19947c478bd9Sstevel@tonic-gate (nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST)); 19957c478bd9Sstevel@tonic-gate else 19967c478bd9Sstevel@tonic-gate #endif 19977c478bd9Sstevel@tonic-gate promote = update_mode(nlmp, MODE(nlmp), nmode); 19987c478bd9Sstevel@tonic-gate 19997c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= flags; 20007c478bd9Sstevel@tonic-gate 20017c478bd9Sstevel@tonic-gate /* 20022926dd2eSrie * If this is a global object, ensure the associated link-map list can 20032926dd2eSrie * be rescanned for global, lazy dependencies. 20042926dd2eSrie */ 20052926dd2eSrie if (MODE(nlmp) & RTLD_GLOBAL) 20062926dd2eSrie LIST(nlmp)->lm_flags &= ~LML_FLG_NOPENDGLBLAZY; 20072926dd2eSrie 20082926dd2eSrie /* 20097c478bd9Sstevel@tonic-gate * If we've been asked to establish a handle create one for this object. 20107c478bd9Sstevel@tonic-gate * Or, if this object has already been analyzed, but this reference 20117c478bd9Sstevel@tonic-gate * requires that the mode of the object be promoted, also create a 20127c478bd9Sstevel@tonic-gate * handle to propagate the new modes to all this objects dependencies. 20137c478bd9Sstevel@tonic-gate */ 20147c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) | flags) & FLG_RT_HANDLE) || (promote && 20157c478bd9Sstevel@tonic-gate (FLAGS(nlmp) & FLG_RT_ANALYZED))) { 20168af2c5b9Srie uint_t oflags, hflags = 0, cdflags; 20177c478bd9Sstevel@tonic-gate 20188af2c5b9Srie /* 20198af2c5b9Srie * Establish any flags for the handle (Grp_hdl). 20208af2c5b9Srie * 20218af2c5b9Srie * . Use of the RTLD_FIRST flag indicates that only the first 20228af2c5b9Srie * dependency on the handle (the new object) can be used 20238af2c5b9Srie * to satisfy dlsym() requests. 20248af2c5b9Srie */ 20257c478bd9Sstevel@tonic-gate if (nmode & RTLD_FIRST) 20268af2c5b9Srie hflags = GPH_FIRST; 20278af2c5b9Srie 20288af2c5b9Srie /* 20298af2c5b9Srie * Establish the flags for this callers dependency descriptor 20308af2c5b9Srie * (Grp_desc). 20318af2c5b9Srie * 20328af2c5b9Srie * . The creation of a handle associated a descriptor for the 20338af2c5b9Srie * new object and descriptor for the parent (caller). 20348af2c5b9Srie * Typically, the handle is created for dlopen() or for 20358af2c5b9Srie * filtering. A handle may also be created to promote 20368af2c5b9Srie * the callers modes (RTLD_NOW) to the new object. In this 20378af2c5b9Srie * latter case, the handle/descriptor are torn down once 20388af2c5b9Srie * the mode propagation has occurred. 20398af2c5b9Srie * 20408af2c5b9Srie * . Use of the RTLD_PARENT flag indicates that the parent 20418af2c5b9Srie * can be relocated against. 20428af2c5b9Srie */ 20438af2c5b9Srie if (((FLAGS(nlmp) | flags) & FLG_RT_HANDLE) == 0) 20448af2c5b9Srie cdflags = GPD_PROMOTE; 20458af2c5b9Srie else 20468af2c5b9Srie cdflags = GPD_PARENT; 20478af2c5b9Srie if (nmode & RTLD_PARENT) 20488af2c5b9Srie cdflags |= GPD_RELOC; 20497c478bd9Sstevel@tonic-gate 20507c478bd9Sstevel@tonic-gate /* 20517c478bd9Sstevel@tonic-gate * Now that a handle is being created, remove this state from 20527c478bd9Sstevel@tonic-gate * the object so that it doesn't mistakenly get inherited by 20537c478bd9Sstevel@tonic-gate * a dependency. 20547c478bd9Sstevel@tonic-gate */ 20557c478bd9Sstevel@tonic-gate oflags = FLAGS(nlmp); 20567c478bd9Sstevel@tonic-gate FLAGS(nlmp) &= ~FLG_RT_HANDLE; 20577c478bd9Sstevel@tonic-gate 20588af2c5b9Srie DBG_CALL(Dbg_file_hdl_title(DBG_HDL_ADD)); 20598af2c5b9Srie if ((ghp = hdl_create(lml, nlmp, clmp, hflags, 20608af2c5b9Srie (GPD_DLSYM | GPD_RELOC | GPD_ADDEPS), cdflags)) == 0) 20617c478bd9Sstevel@tonic-gate return (0); 20627c478bd9Sstevel@tonic-gate 20637c478bd9Sstevel@tonic-gate /* 20647c478bd9Sstevel@tonic-gate * Add any dependencies that are already loaded, to the handle. 20657c478bd9Sstevel@tonic-gate */ 206602ca3e02Srie if (hdl_initialize(ghp, nlmp, nmode, promote) == 0) 20677c478bd9Sstevel@tonic-gate return (0); 20687c478bd9Sstevel@tonic-gate 20697c478bd9Sstevel@tonic-gate if (hdl) 20707c478bd9Sstevel@tonic-gate *hdl = ghp; 20717c478bd9Sstevel@tonic-gate 20727c478bd9Sstevel@tonic-gate /* 20738af2c5b9Srie * If we were asked to create a handle, we're done. 20747c478bd9Sstevel@tonic-gate */ 20757c478bd9Sstevel@tonic-gate if ((oflags | flags) & FLG_RT_HANDLE) 20767c478bd9Sstevel@tonic-gate return (1); 20777c478bd9Sstevel@tonic-gate 20788af2c5b9Srie /* 20798af2c5b9Srie * If the handle was created to promote modes from the parent 20808af2c5b9Srie * (caller) to the new object, then this relationship needs to 20818af2c5b9Srie * be removed to ensure the handle doesn't prevent the new 20828af2c5b9Srie * objects from being deleted if required. If the parent is 20838af2c5b9Srie * the only dependency on the handle, then the handle can be 20848af2c5b9Srie * completely removed. However, the handle may have already 20858af2c5b9Srie * existed, in which case only the parent descriptor can be 20868af2c5b9Srie * deleted from the handle, or at least the GPD_PROMOTE flag 20878af2c5b9Srie * removed from the descriptor. 20888af2c5b9Srie * 20898af2c5b9Srie * Fall through to carry out any group processing. 20908af2c5b9Srie */ 20918af2c5b9Srie free_hdl(ghp, clmp, GPD_PROMOTE); 20927c478bd9Sstevel@tonic-gate } 20937c478bd9Sstevel@tonic-gate 20947c478bd9Sstevel@tonic-gate /* 20957c478bd9Sstevel@tonic-gate * If the caller isn't part of a group we're done. 20967c478bd9Sstevel@tonic-gate */ 2097*cce0e03bSab196087 if (GROUPS(clmp) == NULL) 20987c478bd9Sstevel@tonic-gate return (1); 20997c478bd9Sstevel@tonic-gate 21007c478bd9Sstevel@tonic-gate /* 21017c478bd9Sstevel@tonic-gate * Determine if our caller is already associated with a handle, if so 21027c478bd9Sstevel@tonic-gate * we need to add this object to any handles that already exist. 21037c478bd9Sstevel@tonic-gate * Traverse the list of groups our caller is a member of and add this 21047c478bd9Sstevel@tonic-gate * new link-map to those groups. 21057c478bd9Sstevel@tonic-gate */ 21068af2c5b9Srie DBG_CALL(Dbg_file_hdl_title(DBG_HDL_ADD)); 2107*cce0e03bSab196087 for (APLIST_TRAVERSE(GROUPS(clmp), idx, ghp)) { 2108*cce0e03bSab196087 Aliste idx1; 21097c478bd9Sstevel@tonic-gate Grp_desc *gdp; 21107c478bd9Sstevel@tonic-gate int exist; 2111*cce0e03bSab196087 Rt_map *dlmp1; 2112*cce0e03bSab196087 APlist *lmalp = NULL; 21137c478bd9Sstevel@tonic-gate 21147c478bd9Sstevel@tonic-gate /* 21157c478bd9Sstevel@tonic-gate * If the caller doesn't indicate that its dependencies should 21167c478bd9Sstevel@tonic-gate * be added to a handle, ignore it. This case identifies a 21177c478bd9Sstevel@tonic-gate * parent of a dlopen(RTLD_PARENT) request. 21187c478bd9Sstevel@tonic-gate */ 2119*cce0e03bSab196087 for (ALIST_TRAVERSE(ghp->gh_depends, idx1, gdp)) { 21207c478bd9Sstevel@tonic-gate if (gdp->gd_depend == clmp) 21217c478bd9Sstevel@tonic-gate break; 21227c478bd9Sstevel@tonic-gate } 21237c478bd9Sstevel@tonic-gate if ((gdp->gd_flags & GPD_ADDEPS) == 0) 21247c478bd9Sstevel@tonic-gate continue; 21257c478bd9Sstevel@tonic-gate 21267c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, nlmp, 2127efb9e8b8Srie (GPD_DLSYM | GPD_RELOC | GPD_ADDEPS))) == 0) 21287c478bd9Sstevel@tonic-gate return (0); 21297c478bd9Sstevel@tonic-gate 21307c478bd9Sstevel@tonic-gate /* 21317c478bd9Sstevel@tonic-gate * If this member already exists then its dependencies will 21327c478bd9Sstevel@tonic-gate * have already been processed. 21337c478bd9Sstevel@tonic-gate */ 21347c478bd9Sstevel@tonic-gate if (exist == ALE_EXISTS) 21357c478bd9Sstevel@tonic-gate continue; 21367c478bd9Sstevel@tonic-gate 21377c478bd9Sstevel@tonic-gate /* 21387c478bd9Sstevel@tonic-gate * If the object we've added has just been opened, it will not 21397c478bd9Sstevel@tonic-gate * yet have been processed for its dependencies, these will be 21407c478bd9Sstevel@tonic-gate * added on later calls to load_one(). If it doesn't have any 21417c478bd9Sstevel@tonic-gate * dependencies we're also done. 21427c478bd9Sstevel@tonic-gate */ 21437c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) || 2144*cce0e03bSab196087 (DEPENDS(nlmp) == NULL)) 21457c478bd9Sstevel@tonic-gate continue; 21467c478bd9Sstevel@tonic-gate 21477c478bd9Sstevel@tonic-gate /* 21487c478bd9Sstevel@tonic-gate * Otherwise, this object exists and has dependencies, so add 21497c478bd9Sstevel@tonic-gate * all of its dependencies to the handle were operating on. 21507c478bd9Sstevel@tonic-gate */ 2151*cce0e03bSab196087 if (aplist_append(&lmalp, nlmp, AL_CNT_DEPCLCT) == 0) 21527c478bd9Sstevel@tonic-gate return (0); 21537c478bd9Sstevel@tonic-gate 2154*cce0e03bSab196087 for (APLIST_TRAVERSE(lmalp, idx1, dlmp1)) { 2155*cce0e03bSab196087 Aliste idx2; 2156*cce0e03bSab196087 Bnd_desc *bdp; 21577c478bd9Sstevel@tonic-gate 21587c478bd9Sstevel@tonic-gate /* 21597c478bd9Sstevel@tonic-gate * Add any dependencies of this dependency to the 21607c478bd9Sstevel@tonic-gate * dynamic dependency list so they can be further 21617c478bd9Sstevel@tonic-gate * processed. 21627c478bd9Sstevel@tonic-gate */ 2163*cce0e03bSab196087 for (APLIST_TRAVERSE(DEPENDS(dlmp1), idx2, bdp)) { 21647c478bd9Sstevel@tonic-gate Rt_map * dlmp2 = bdp->b_depend; 21657c478bd9Sstevel@tonic-gate 21667c478bd9Sstevel@tonic-gate if ((bdp->b_flags & BND_NEEDED) == 0) 21677c478bd9Sstevel@tonic-gate continue; 21687c478bd9Sstevel@tonic-gate 2169*cce0e03bSab196087 if (aplist_test(&lmalp, dlmp2, 21707c478bd9Sstevel@tonic-gate AL_CNT_DEPCLCT) == 0) { 21717c478bd9Sstevel@tonic-gate free(lmalp); 21727c478bd9Sstevel@tonic-gate return (0); 21737c478bd9Sstevel@tonic-gate } 21747c478bd9Sstevel@tonic-gate } 21757c478bd9Sstevel@tonic-gate 21767c478bd9Sstevel@tonic-gate if (nlmp == dlmp1) 21777c478bd9Sstevel@tonic-gate continue; 21787c478bd9Sstevel@tonic-gate 21797c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, dlmp1, 2180efb9e8b8Srie (GPD_DLSYM | GPD_RELOC | GPD_ADDEPS))) != 0) { 21817247f888Srie if (exist == ALE_CREATE) { 21827c478bd9Sstevel@tonic-gate (void) update_mode(dlmp1, MODE(dlmp1), 21837c478bd9Sstevel@tonic-gate nmode); 21847247f888Srie } 21857c478bd9Sstevel@tonic-gate continue; 21867c478bd9Sstevel@tonic-gate } 21877c478bd9Sstevel@tonic-gate free(lmalp); 21887c478bd9Sstevel@tonic-gate return (0); 21897c478bd9Sstevel@tonic-gate } 21907c478bd9Sstevel@tonic-gate free(lmalp); 21917c478bd9Sstevel@tonic-gate } 21927c478bd9Sstevel@tonic-gate return (1); 21937c478bd9Sstevel@tonic-gate } 21947c478bd9Sstevel@tonic-gate 21957c478bd9Sstevel@tonic-gate /* 21967c478bd9Sstevel@tonic-gate * The central routine for loading shared objects. Insures ldd() diagnostics, 21977c478bd9Sstevel@tonic-gate * handles and any other related additions are all done in one place. 21987c478bd9Sstevel@tonic-gate */ 2199fb1354edSrie static Rt_map * 22007247f888Srie _load_path(Lm_list *lml, Aliste lmco, const char **oname, Rt_map *clmp, 2201fb1354edSrie int nmode, uint_t flags, Grp_hdl ** hdl, Fdesc *nfdp, Rej_desc *rej) 22027c478bd9Sstevel@tonic-gate { 22037c478bd9Sstevel@tonic-gate Rt_map *nlmp; 22047247f888Srie const char *name = *oname; 22057c478bd9Sstevel@tonic-gate 22067c478bd9Sstevel@tonic-gate if ((nmode & RTLD_NOLOAD) == 0) { 22077c478bd9Sstevel@tonic-gate /* 22087c478bd9Sstevel@tonic-gate * If this isn't a noload request attempt to load the file. 22097247f888Srie * Note, the name of the file may be changed by an auditor. 22107c478bd9Sstevel@tonic-gate */ 22117247f888Srie if ((load_trace(lml, oname, clmp)) == 0) 22127c478bd9Sstevel@tonic-gate return (0); 22137c478bd9Sstevel@tonic-gate 22147247f888Srie name = *oname; 22157247f888Srie 22167c478bd9Sstevel@tonic-gate if ((nlmp = load_so(lml, lmco, name, clmp, flags, 2217fb1354edSrie nfdp, rej)) == 0) 22187c478bd9Sstevel@tonic-gate return (0); 22197c478bd9Sstevel@tonic-gate 22207c478bd9Sstevel@tonic-gate /* 22217c478bd9Sstevel@tonic-gate * If we've loaded a library which identifies itself as not 22227c478bd9Sstevel@tonic-gate * being dlopen()'able catch it here. Let non-dlopen()'able 22237c478bd9Sstevel@tonic-gate * objects through under RTLD_CONFGEN as they're only being 22247c478bd9Sstevel@tonic-gate * mapped to be dldump()'ed. 22257c478bd9Sstevel@tonic-gate */ 22267c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_APPLIC) && ((FLAGS(nlmp) & 22277c478bd9Sstevel@tonic-gate (FLG_RT_NOOPEN | FLG_RT_RELOCED)) == FLG_RT_NOOPEN) && 22287c478bd9Sstevel@tonic-gate ((nmode & RTLD_CONFGEN) == 0)) { 22297c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 22307c478bd9Sstevel@tonic-gate 22317c478bd9Sstevel@tonic-gate _rej.rej_name = name; 22327c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 22337c478bd9Sstevel@tonic-gate _rej.rej_str = MSG_INTL(MSG_GEN_NOOPEN); 22345aefb655Srie DBG_CALL(Dbg_file_rejected(lml, &_rej)); 223531fdd7caSab196087 rejection_inherit(rej, &_rej); 22367c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 22377c478bd9Sstevel@tonic-gate return (0); 22387c478bd9Sstevel@tonic-gate } 22397c478bd9Sstevel@tonic-gate } else { 22407c478bd9Sstevel@tonic-gate /* 22417c478bd9Sstevel@tonic-gate * If it's a NOLOAD request - check to see if the object 22427c478bd9Sstevel@tonic-gate * has already been loaded. 22437c478bd9Sstevel@tonic-gate */ 22447c478bd9Sstevel@tonic-gate /* LINTED */ 22450aa3cd4dSrie if (nlmp = is_so_loaded(lml, name)) { 22467c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_VERBOSE) && 22477c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 22487c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, 22497c478bd9Sstevel@tonic-gate NAME(clmp)); 22507247f888Srie /* BEGIN CSTYLED */ 22517c478bd9Sstevel@tonic-gate if (*name == '/') 22527c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 22537c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 22547c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 22557c478bd9Sstevel@tonic-gate else 22567c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 22577c478bd9Sstevel@tonic-gate name, NAME(nlmp), 22587c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 22597c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 22607247f888Srie /* END CSTYLED */ 22617c478bd9Sstevel@tonic-gate } 22627c478bd9Sstevel@tonic-gate } else { 22637c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 22647c478bd9Sstevel@tonic-gate 22657c478bd9Sstevel@tonic-gate _rej.rej_name = name; 22667c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 22677c478bd9Sstevel@tonic-gate _rej.rej_str = strerror(ENOENT); 22685aefb655Srie DBG_CALL(Dbg_file_rejected(lml, &_rej)); 226931fdd7caSab196087 rejection_inherit(rej, &_rej); 22707c478bd9Sstevel@tonic-gate return (0); 22717c478bd9Sstevel@tonic-gate } 22727c478bd9Sstevel@tonic-gate } 22737c478bd9Sstevel@tonic-gate 22747c478bd9Sstevel@tonic-gate /* 22757c478bd9Sstevel@tonic-gate * Finish processing this loaded object. 22767c478bd9Sstevel@tonic-gate */ 2277390b98b5Srie if (load_finish(lml, name, clmp, nmode, flags, hdl, nlmp) == 0) { 2278390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 22797c478bd9Sstevel@tonic-gate 22807c478bd9Sstevel@tonic-gate /* 2281390b98b5Srie * If this object has already been analyzed, then it is in use, 2282390b98b5Srie * so even though this operation has failed, it should not be 2283390b98b5Srie * torn down. 22847c478bd9Sstevel@tonic-gate */ 22857c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) 22867c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 22877c478bd9Sstevel@tonic-gate return (0); 22887c478bd9Sstevel@tonic-gate } 22897c478bd9Sstevel@tonic-gate 22907c478bd9Sstevel@tonic-gate /* 2291390b98b5Srie * If this object is new, and we're being audited, tell the audit 2292390b98b5Srie * library of the file we've just opened. Note, if the new link-map 2293390b98b5Srie * requires local auditing of its dependencies we also register its 2294390b98b5Srie * opening. 2295390b98b5Srie */ 2296390b98b5Srie if (FLAGS(nlmp) & FLG_RT_NEWLOAD) { 2297390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 2298390b98b5Srie 2299390b98b5Srie if (((lml->lm_tflags | FLAGS1(clmp) | FLAGS1(nlmp)) & 2300390b98b5Srie LML_TFLG_AUD_MASK) && (((lml->lm_flags | 2301390b98b5Srie LIST(clmp)->lm_flags) & LML_FLG_NOAUDIT) == 0)) { 2302390b98b5Srie if (audit_objopen(clmp, nlmp) == 0) { 2303390b98b5Srie remove_so(lml, nlmp); 2304390b98b5Srie return (0); 2305390b98b5Srie } 2306390b98b5Srie } 2307390b98b5Srie } 2308390b98b5Srie return (nlmp); 2309390b98b5Srie } 2310390b98b5Srie 2311fb1354edSrie Rt_map * 23127247f888Srie load_path(Lm_list *lml, Aliste lmco, const char **name, Rt_map *clmp, 2313fb1354edSrie int nmode, uint_t flags, Grp_hdl **hdl, Fdesc *cfdp, Rej_desc *rej) 2314fb1354edSrie { 2315fb1354edSrie Rt_map *lmp; 2316fb1354edSrie Fdesc nfdp = { 0 }; 2317fb1354edSrie 2318fb1354edSrie /* 2319fb1354edSrie * If this path resulted from a $HWCAP specification, then the best 2320fb1354edSrie * hardware capability object has already been establish, and is 2321fb1354edSrie * available in the calling file descriptor. 2322fb1354edSrie */ 2323fb1354edSrie if (flags & FLG_RT_HWCAP) { 2324fb1354edSrie if (cfdp->fd_lmp == 0) { 2325fb1354edSrie /* 2326fb1354edSrie * If this object hasn't yet been mapped, re-establish 2327fb1354edSrie * the file descriptor structure to reflect this objects 2328fb1354edSrie * original initial page mapping. Make sure any present 2329fb1354edSrie * file descriptor mapping is removed before overwriting 2330fb1354edSrie * the structure. 2331fb1354edSrie */ 2332fb1354edSrie #if defined(MAP_ALIGN) 2333fb1354edSrie if (fmap->fm_maddr && 2334fb1354edSrie ((fmap->fm_mflags & MAP_ALIGN) == 0)) 2335fb1354edSrie #else 2336fb1354edSrie if (fmap->fm_maddr) 2337fb1354edSrie #endif 2338fb1354edSrie (void) munmap(fmap->fm_maddr, fmap->fm_msize); 233946d4d531Srie 234046d4d531Srie *fmap = cfdp->fd_fmap; 2341fb1354edSrie } 2342fb1354edSrie nfdp = *cfdp; 2343fb1354edSrie } 2344fb1354edSrie 2345fb1354edSrie lmp = _load_path(lml, lmco, name, clmp, nmode, flags, hdl, &nfdp, rej); 2346fb1354edSrie 2347fb1354edSrie /* 2348fb1354edSrie * If this path originated from a $HWCAP specification, re-establish the 2349fb1354edSrie * fdesc information. For single paged objects, such as filters, the 2350fb1354edSrie * original mapping may have been sufficient to capture the file, thus 2351fb1354edSrie * this mapping needs to be reset to insure it doesn't mistakenly get 2352fb1354edSrie * unmapped as part of HWCAP cleanup. 2353fb1354edSrie */ 235446d4d531Srie if ((flags & FLG_RT_HWCAP) && (cfdp->fd_lmp == 0)) { 2355fb1354edSrie cfdp->fd_fmap.fm_maddr = fmap->fm_maddr; 2356fb1354edSrie cfdp->fd_fmap.fm_mflags = fmap->fm_mflags; 2357fb1354edSrie cfdp->fd_fd = nfdp.fd_fd; 2358fb1354edSrie } 2359fb1354edSrie 2360fb1354edSrie return (lmp); 2361fb1354edSrie } 2362fb1354edSrie 2363390b98b5Srie /* 23647c478bd9Sstevel@tonic-gate * Load one object from a possible list of objects. Typically, for requests 23657c478bd9Sstevel@tonic-gate * such as NEEDED's, only one object is specified. However, this object could 23667c478bd9Sstevel@tonic-gate * be specified using $ISALIST or $HWCAP, in which case only the first object 23677c478bd9Sstevel@tonic-gate * that can be loaded is used (ie. the best). 23687c478bd9Sstevel@tonic-gate */ 23697c478bd9Sstevel@tonic-gate Rt_map * 23707c478bd9Sstevel@tonic-gate load_one(Lm_list *lml, Aliste lmco, Pnode *pnp, Rt_map *clmp, int mode, 23717c478bd9Sstevel@tonic-gate uint_t flags, Grp_hdl ** hdl) 23727c478bd9Sstevel@tonic-gate { 23737c478bd9Sstevel@tonic-gate Rej_desc rej = { 0 }; 23747c478bd9Sstevel@tonic-gate Pnode *tpnp; 23757c478bd9Sstevel@tonic-gate const char *name; 23767c478bd9Sstevel@tonic-gate 23777c478bd9Sstevel@tonic-gate for (tpnp = pnp; tpnp && tpnp->p_name; tpnp = tpnp->p_next) { 23787247f888Srie Rt_map *tlmp; 23797247f888Srie 23807c478bd9Sstevel@tonic-gate /* 23817c478bd9Sstevel@tonic-gate * A Hardware capabilities requirement can itself expand into 23827c478bd9Sstevel@tonic-gate * a number of candidates. 23837c478bd9Sstevel@tonic-gate */ 23847c478bd9Sstevel@tonic-gate if (tpnp->p_orig & PN_TKN_HWCAP) { 23857c478bd9Sstevel@tonic-gate if ((tlmp = load_hwcap(lml, lmco, tpnp->p_name, clmp, 23867c478bd9Sstevel@tonic-gate mode, (flags | FLG_RT_HWCAP), hdl, &rej)) != 0) { 23877c478bd9Sstevel@tonic-gate remove_rej(&rej); 23887c478bd9Sstevel@tonic-gate return (tlmp); 23897c478bd9Sstevel@tonic-gate } 23907c478bd9Sstevel@tonic-gate } else { 23917247f888Srie if ((tlmp = load_path(lml, lmco, &tpnp->p_name, clmp, 23927c478bd9Sstevel@tonic-gate mode, flags, hdl, 0, &rej)) != 0) { 23937c478bd9Sstevel@tonic-gate remove_rej(&rej); 23947c478bd9Sstevel@tonic-gate return (tlmp); 23957c478bd9Sstevel@tonic-gate } 23967c478bd9Sstevel@tonic-gate } 23977c478bd9Sstevel@tonic-gate } 23987c478bd9Sstevel@tonic-gate 23997c478bd9Sstevel@tonic-gate /* 24007c478bd9Sstevel@tonic-gate * If this pathname originated from an expanded token, use the original 24017c478bd9Sstevel@tonic-gate * for any diagnostic output. 24027c478bd9Sstevel@tonic-gate */ 24037c478bd9Sstevel@tonic-gate if ((name = pnp->p_oname) == 0) 24047c478bd9Sstevel@tonic-gate name = pnp->p_name; 24057c478bd9Sstevel@tonic-gate 24067c478bd9Sstevel@tonic-gate file_notfound(lml, name, clmp, flags, &rej); 24077c478bd9Sstevel@tonic-gate remove_rej(&rej); 24087c478bd9Sstevel@tonic-gate return (0); 24097c478bd9Sstevel@tonic-gate } 24107c478bd9Sstevel@tonic-gate 24117c478bd9Sstevel@tonic-gate /* 24129a411307Srie * Determine whether a symbol is defined as an interposer. 24139a411307Srie */ 24149a411307Srie int 24159a411307Srie is_sym_interposer(Rt_map *lmp, Sym *sym) 24169a411307Srie { 24179a411307Srie Syminfo *sip = SYMINFO(lmp); 24189a411307Srie 24199a411307Srie if (sip) { 24209a411307Srie ulong_t ndx; 24219a411307Srie 24229a411307Srie ndx = (((ulong_t)sym - (ulong_t)SYMTAB(lmp)) / SYMENT(lmp)); 24239a411307Srie /* LINTED */ 24249a411307Srie sip = (Syminfo *)((char *)sip + (ndx * SYMINENT(lmp))); 24259a411307Srie if (sip->si_flags & SYMINFO_FLG_INTERPOSE) 24269a411307Srie return (1); 24279a411307Srie } 24289a411307Srie return (0); 24299a411307Srie } 24309a411307Srie 24319a411307Srie /* 24327c478bd9Sstevel@tonic-gate * While processing direct or group bindings, determine whether the object to 24337c478bd9Sstevel@tonic-gate * which we've bound can be interposed upon. In this context, copy relocations 24347c478bd9Sstevel@tonic-gate * are a form of interposition. 24357c478bd9Sstevel@tonic-gate */ 24367c478bd9Sstevel@tonic-gate static Sym * 24377c478bd9Sstevel@tonic-gate lookup_sym_interpose(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Lm_list *lml, 24387c478bd9Sstevel@tonic-gate Sym *sym) 24397c478bd9Sstevel@tonic-gate { 24407c478bd9Sstevel@tonic-gate Rt_map *lmp; 24417c478bd9Sstevel@tonic-gate Slookup sl; 24427c478bd9Sstevel@tonic-gate 24437c478bd9Sstevel@tonic-gate /* 24447c478bd9Sstevel@tonic-gate * If we've bound to a copy relocation definition then we need to assign 24457c478bd9Sstevel@tonic-gate * this binding to the original copy reference. Fabricate an inter- 24467c478bd9Sstevel@tonic-gate * position diagnostic, as this is a legitimate form of interposition. 24477c478bd9Sstevel@tonic-gate */ 24487c478bd9Sstevel@tonic-gate if (FLAGS1(*dlmp) & FL1_RT_COPYTOOK) { 24497c478bd9Sstevel@tonic-gate Rel_copy *rcp; 2450*cce0e03bSab196087 Aliste idx; 24517c478bd9Sstevel@tonic-gate 2452*cce0e03bSab196087 for (ALIST_TRAVERSE(COPY_R(*dlmp), idx, rcp)) { 24537c478bd9Sstevel@tonic-gate if ((sym == rcp->r_dsym) || (sym->st_value && 24547c478bd9Sstevel@tonic-gate (sym->st_value == rcp->r_dsym->st_value))) { 24557c478bd9Sstevel@tonic-gate *dlmp = rcp->r_rlmp; 24567c478bd9Sstevel@tonic-gate *binfo |= 24577c478bd9Sstevel@tonic-gate (DBG_BINFO_INTERPOSE | DBG_BINFO_COPYREF); 24587c478bd9Sstevel@tonic-gate return (rcp->r_rsym); 24597c478bd9Sstevel@tonic-gate } 24607c478bd9Sstevel@tonic-gate } 24617c478bd9Sstevel@tonic-gate } 24627c478bd9Sstevel@tonic-gate 24637c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_INTRPOSE) == 0) 24647c478bd9Sstevel@tonic-gate return ((Sym *)0); 24657c478bd9Sstevel@tonic-gate 24667c478bd9Sstevel@tonic-gate /* 24677c478bd9Sstevel@tonic-gate * Traverse the list of known interposers to determine whether any 24687c478bd9Sstevel@tonic-gate * offer the same symbol. Note, the head of the link-map could be 24697c478bd9Sstevel@tonic-gate * identified as an interposer. If it is, make sure we only look for 24707c478bd9Sstevel@tonic-gate * symbol definitions. Otherwise, skip the head of the link-map, so 24717c478bd9Sstevel@tonic-gate * that we don't bind to any .plt references, or copy-relocations 24727c478bd9Sstevel@tonic-gate * unintentionally. 24737c478bd9Sstevel@tonic-gate */ 24747c478bd9Sstevel@tonic-gate lmp = lml->lm_head; 24757c478bd9Sstevel@tonic-gate sl = *slp; 24769a411307Srie if (((FLAGS(lmp) & MSK_RT_INTPOSE) == 0) || (sl.sl_flags & LKUP_COPY)) 24777c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(lmp); 24787c478bd9Sstevel@tonic-gate else 24797c478bd9Sstevel@tonic-gate sl.sl_flags &= ~LKUP_SPEC; 24807c478bd9Sstevel@tonic-gate 24817c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 24827c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_DELETE) 24837c478bd9Sstevel@tonic-gate continue; 24849a411307Srie if ((FLAGS(lmp) & MSK_RT_INTPOSE) == 0) 24857c478bd9Sstevel@tonic-gate break; 24867c478bd9Sstevel@tonic-gate 248760758829Srie if (callable(lmp, *dlmp, 0, sl.sl_flags)) { 24889a411307Srie Rt_map *ilmp; 24899a411307Srie 24907c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 24919a411307Srie if (sym = SYMINTP(lmp)(&sl, &ilmp, binfo)) { 24929a411307Srie /* 24939a411307Srie * If this object provides individual symbol 24949a411307Srie * interposers, make sure that the symbol we 24959a411307Srie * have found is tagged as an interposer. 24969a411307Srie */ 24979a411307Srie if ((FLAGS(ilmp) & FLG_RT_SYMINTPO) && 24989a411307Srie (is_sym_interposer(ilmp, sym) == 0)) 24999a411307Srie continue; 25009a411307Srie 25019a411307Srie /* 25029a411307Srie * Indicate this binding has occurred to an 25039a411307Srie * interposer, and return the symbol. 25049a411307Srie */ 25057c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_INTERPOSE; 25069a411307Srie *dlmp = ilmp; 25077c478bd9Sstevel@tonic-gate return (sym); 25087c478bd9Sstevel@tonic-gate } 25097c478bd9Sstevel@tonic-gate } 25107c478bd9Sstevel@tonic-gate } 25117c478bd9Sstevel@tonic-gate return ((Sym *)0); 25127c478bd9Sstevel@tonic-gate } 25137c478bd9Sstevel@tonic-gate 25147c478bd9Sstevel@tonic-gate /* 25157c478bd9Sstevel@tonic-gate * If an object specifies direct bindings (it contains a syminfo structure 25167c478bd9Sstevel@tonic-gate * describing where each binding was established during link-editing, and the 25177c478bd9Sstevel@tonic-gate * object was built -Bdirect), then look for the symbol in the specific object. 25187c478bd9Sstevel@tonic-gate */ 25197c478bd9Sstevel@tonic-gate static Sym * 25207c478bd9Sstevel@tonic-gate lookup_sym_direct(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Syminfo *sip, 25217c478bd9Sstevel@tonic-gate Rt_map *lmp) 25227c478bd9Sstevel@tonic-gate { 25237c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 25247c478bd9Sstevel@tonic-gate Sym *sym; 25257c478bd9Sstevel@tonic-gate Slookup sl; 25267c478bd9Sstevel@tonic-gate 25277c478bd9Sstevel@tonic-gate /* 25287c478bd9Sstevel@tonic-gate * If a direct binding resolves to the definition of a copy relocated 25297c478bd9Sstevel@tonic-gate * variable, it must be redirected to the copy (in the executable) that 25307c478bd9Sstevel@tonic-gate * will eventually be made. Typically, this redirection occurs in 25317c478bd9Sstevel@tonic-gate * lookup_sym_interpose(). But, there's an edge condition. If a 25327c478bd9Sstevel@tonic-gate * directly bound executable contains pic code, there may be a 25337c478bd9Sstevel@tonic-gate * reference to a definition that will eventually have a copy made. 25347c478bd9Sstevel@tonic-gate * However, this copy relocation may not yet have occurred, because 25357c478bd9Sstevel@tonic-gate * the relocation making this reference comes before the relocation 25367c478bd9Sstevel@tonic-gate * that will create the copy. 25377c478bd9Sstevel@tonic-gate * Under direct bindings, the syminfo indicates that a copy will be 25387c478bd9Sstevel@tonic-gate * taken (SYMINFO_FLG_COPY). This can only be set in an executable. 25397c478bd9Sstevel@tonic-gate * Thus, the caller must be the executable, so bind to the destination 25407c478bd9Sstevel@tonic-gate * of the copy within the executable. 25417c478bd9Sstevel@tonic-gate */ 25427c478bd9Sstevel@tonic-gate if (((slp->sl_flags & LKUP_COPY) == 0) && 25437c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_COPY)) { 25447c478bd9Sstevel@tonic-gate 25457c478bd9Sstevel@tonic-gate slp->sl_imap = LIST(clmp)->lm_head; 25467c478bd9Sstevel@tonic-gate if (sym = SYMINTP(clmp)(slp, dlmp, binfo)) 25477c478bd9Sstevel@tonic-gate *binfo |= (DBG_BINFO_DIRECT | DBG_BINFO_COPYREF); 25487c478bd9Sstevel@tonic-gate return (sym); 25497c478bd9Sstevel@tonic-gate } 25507c478bd9Sstevel@tonic-gate 25517c478bd9Sstevel@tonic-gate /* 2552efb9e8b8Srie * If we need to directly bind to our parent, start looking in each 2553efb9e8b8Srie * callers link map. 25547c478bd9Sstevel@tonic-gate */ 25557c478bd9Sstevel@tonic-gate sl = *slp; 25567c478bd9Sstevel@tonic-gate sl.sl_flags |= LKUP_DIRECT; 25577c478bd9Sstevel@tonic-gate sym = 0; 25587c478bd9Sstevel@tonic-gate 25597c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_PARENT) { 2560*cce0e03bSab196087 Aliste idx1; 2561*cce0e03bSab196087 Bnd_desc *bdp; 2562*cce0e03bSab196087 Grp_hdl *ghp; 25637c478bd9Sstevel@tonic-gate 2564efb9e8b8Srie /* 2565efb9e8b8Srie * Determine the parent of this explicit dependency from its 2566efb9e8b8Srie * CALLERS()'s list. 2567efb9e8b8Srie */ 2568*cce0e03bSab196087 for (APLIST_TRAVERSE(CALLERS(clmp), idx1, bdp)) { 2569*cce0e03bSab196087 sl.sl_imap = lmp = bdp->b_caller; 25707c478bd9Sstevel@tonic-gate if ((sym = SYMINTP(lmp)(&sl, dlmp, binfo)) != 0) 2571efb9e8b8Srie goto found; 2572efb9e8b8Srie } 2573efb9e8b8Srie 2574efb9e8b8Srie /* 2575efb9e8b8Srie * A caller can also be defined as the parent of a dlopen() 2576efb9e8b8Srie * call. Determine whether this object has any handles. The 2577efb9e8b8Srie * dependencies maintained with the handle represent the 2578efb9e8b8Srie * explicit dependencies of the dlopen()'ed object, and the 2579efb9e8b8Srie * calling parent. 2580efb9e8b8Srie */ 2581*cce0e03bSab196087 for (APLIST_TRAVERSE(HANDLES(clmp), idx1, ghp)) { 2582efb9e8b8Srie Grp_desc *gdp; 2583*cce0e03bSab196087 Aliste idx2; 2584efb9e8b8Srie 2585*cce0e03bSab196087 for (ALIST_TRAVERSE(ghp->gh_depends, idx2, gdp)) { 2586efb9e8b8Srie if ((gdp->gd_flags & GPD_PARENT) == 0) 2587efb9e8b8Srie continue; 2588efb9e8b8Srie sl.sl_imap = lmp = gdp->gd_depend; 2589efb9e8b8Srie if ((sym = SYMINTP(lmp)(&sl, dlmp, binfo)) != 0) 2590efb9e8b8Srie goto found; 2591efb9e8b8Srie } 25927c478bd9Sstevel@tonic-gate } 25937c478bd9Sstevel@tonic-gate } else { 25947c478bd9Sstevel@tonic-gate /* 25957c478bd9Sstevel@tonic-gate * If we need to direct bind to anything else look in the 25967c478bd9Sstevel@tonic-gate * link map associated with this symbol reference. 25977c478bd9Sstevel@tonic-gate */ 25987c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_SELF) 25997c478bd9Sstevel@tonic-gate sl.sl_imap = lmp = clmp; 26007c478bd9Sstevel@tonic-gate else 26017c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 26027c478bd9Sstevel@tonic-gate 26037c478bd9Sstevel@tonic-gate if (lmp) 26047c478bd9Sstevel@tonic-gate sym = SYMINTP(lmp)(&sl, dlmp, binfo); 26057c478bd9Sstevel@tonic-gate } 2606efb9e8b8Srie found: 26077c478bd9Sstevel@tonic-gate if (sym) 26087c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_DIRECT; 26097c478bd9Sstevel@tonic-gate 26107c478bd9Sstevel@tonic-gate /* 26117c478bd9Sstevel@tonic-gate * If we've bound to an object, determine whether that object can be 26127c478bd9Sstevel@tonic-gate * interposed upon for this symbol. 26137c478bd9Sstevel@tonic-gate */ 26147c478bd9Sstevel@tonic-gate if (sym && (LIST(*dlmp)->lm_head != *dlmp) && 26157c478bd9Sstevel@tonic-gate (LIST(*dlmp) == LIST(clmp))) { 26167c478bd9Sstevel@tonic-gate Sym * isym; 26177c478bd9Sstevel@tonic-gate 26187c478bd9Sstevel@tonic-gate if ((isym = lookup_sym_interpose(slp, dlmp, binfo, 26197c478bd9Sstevel@tonic-gate LIST(*dlmp), sym)) != 0) 26207c478bd9Sstevel@tonic-gate return (isym); 26217c478bd9Sstevel@tonic-gate } 26227c478bd9Sstevel@tonic-gate 26237c478bd9Sstevel@tonic-gate return (sym); 26247c478bd9Sstevel@tonic-gate } 26257c478bd9Sstevel@tonic-gate 26267c478bd9Sstevel@tonic-gate static Sym * 262760758829Srie core_lookup_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo, 26287c478bd9Sstevel@tonic-gate Aliste off) 26297c478bd9Sstevel@tonic-gate { 26307c478bd9Sstevel@tonic-gate Rt_map *lmp; 26317c478bd9Sstevel@tonic-gate 26327c478bd9Sstevel@tonic-gate /* 26337c478bd9Sstevel@tonic-gate * Copy relocations should start their search after the head of the 26347c478bd9Sstevel@tonic-gate * main link-map control list. 26357c478bd9Sstevel@tonic-gate */ 2636*cce0e03bSab196087 if ((off == ALIST_OFF_DATA) && (slp->sl_flags & LKUP_COPY) && ilmp) 26377c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(ilmp); 26387c478bd9Sstevel@tonic-gate else 26397c478bd9Sstevel@tonic-gate lmp = ilmp; 26407c478bd9Sstevel@tonic-gate 26417c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 264260758829Srie if (callable(slp->sl_cmap, lmp, 0, slp->sl_flags)) { 26437c478bd9Sstevel@tonic-gate Sym *sym; 26447c478bd9Sstevel@tonic-gate 26457c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 264660758829Srie if (((sym = SYMINTP(lmp)(slp, dlmp, binfo)) != 0) || 264760758829Srie (*binfo & BINFO_REJSINGLE)) 26487c478bd9Sstevel@tonic-gate return (sym); 26497c478bd9Sstevel@tonic-gate } 26507c478bd9Sstevel@tonic-gate } 26517c478bd9Sstevel@tonic-gate return (0); 26527c478bd9Sstevel@tonic-gate } 26537c478bd9Sstevel@tonic-gate 26547c478bd9Sstevel@tonic-gate static Sym * 26557c478bd9Sstevel@tonic-gate _lazy_find_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo) 26567c478bd9Sstevel@tonic-gate { 26577c478bd9Sstevel@tonic-gate Rt_map *lmp; 26587c478bd9Sstevel@tonic-gate 26597c478bd9Sstevel@tonic-gate for (lmp = ilmp; lmp; lmp = (Rt_map *)NEXT(lmp)) { 26607c478bd9Sstevel@tonic-gate if (LAZY(lmp) == 0) 26617c478bd9Sstevel@tonic-gate continue; 266260758829Srie if (callable(slp->sl_cmap, lmp, 0, slp->sl_flags)) { 26637c478bd9Sstevel@tonic-gate Sym *sym; 26647c478bd9Sstevel@tonic-gate 26657c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 26667c478bd9Sstevel@tonic-gate if ((sym = elf_lazy_find_sym(slp, dlmp, binfo)) != 0) 26677c478bd9Sstevel@tonic-gate return (sym); 26687c478bd9Sstevel@tonic-gate } 26697c478bd9Sstevel@tonic-gate } 26707c478bd9Sstevel@tonic-gate return (0); 26717c478bd9Sstevel@tonic-gate } 26727c478bd9Sstevel@tonic-gate 267360758829Srie static Sym * 267460758829Srie _lookup_sym(Slookup *slp, Rt_map **dlmp, uint_t *binfo) 26757c478bd9Sstevel@tonic-gate { 26767c478bd9Sstevel@tonic-gate const char *name = slp->sl_name; 26777c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 26787c478bd9Sstevel@tonic-gate Rt_map *ilmp = slp->sl_imap, *lmp; 26797c478bd9Sstevel@tonic-gate ulong_t rsymndx; 268060758829Srie Sym *sym; 26817c478bd9Sstevel@tonic-gate Syminfo *sip; 26827c478bd9Sstevel@tonic-gate Slookup sl; 26837c478bd9Sstevel@tonic-gate 26847c478bd9Sstevel@tonic-gate /* 26857c478bd9Sstevel@tonic-gate * Search the initial link map for the required symbol (this category is 26867c478bd9Sstevel@tonic-gate * selected by dlsym(), where individual link maps are searched for a 26877c478bd9Sstevel@tonic-gate * required symbol. Therefore, we know we have permission to look at 26887c478bd9Sstevel@tonic-gate * the link map). 26897c478bd9Sstevel@tonic-gate */ 269060758829Srie if (slp->sl_flags & LKUP_FIRST) 26917c478bd9Sstevel@tonic-gate return (SYMINTP(ilmp)(slp, dlmp, binfo)); 26927c478bd9Sstevel@tonic-gate 26937c478bd9Sstevel@tonic-gate /* 26947c478bd9Sstevel@tonic-gate * Determine whether this lookup can be satisfied by an objects direct, 26957c478bd9Sstevel@tonic-gate * or lazy binding information. This is triggered by a relocation from 26967c478bd9Sstevel@tonic-gate * the object (hence rsymndx is set). 26977c478bd9Sstevel@tonic-gate */ 26987c478bd9Sstevel@tonic-gate if (((rsymndx = slp->sl_rsymndx) != 0) && 26997c478bd9Sstevel@tonic-gate ((sip = SYMINFO(clmp)) != 0)) { 27007c478bd9Sstevel@tonic-gate /* 27017c478bd9Sstevel@tonic-gate * Find the corresponding Syminfo entry for the original 27027c478bd9Sstevel@tonic-gate * referencing symbol. 27037c478bd9Sstevel@tonic-gate */ 27047c478bd9Sstevel@tonic-gate /* LINTED */ 27057c478bd9Sstevel@tonic-gate sip = (Syminfo *)((char *)sip + (rsymndx * SYMINENT(clmp))); 27067c478bd9Sstevel@tonic-gate 27077c478bd9Sstevel@tonic-gate /* 27087c478bd9Sstevel@tonic-gate * If the symbol information indicates a direct binding, 27097c478bd9Sstevel@tonic-gate * determine the link map that is required to satisfy the 27107c478bd9Sstevel@tonic-gate * binding. Note, if the dependency can not be found, but a 27117c478bd9Sstevel@tonic-gate * direct binding isn't required, we will still fall through 27127c478bd9Sstevel@tonic-gate * to perform any default symbol search. 27137c478bd9Sstevel@tonic-gate */ 27147c478bd9Sstevel@tonic-gate if (sip->si_flags & SYMINFO_FLG_DIRECT) { 27157c478bd9Sstevel@tonic-gate uint_t bound = sip->si_boundto; 27167c478bd9Sstevel@tonic-gate 27177c478bd9Sstevel@tonic-gate lmp = 0; 27187c478bd9Sstevel@tonic-gate if (bound < SYMINFO_BT_LOWRESERVE) 27197c478bd9Sstevel@tonic-gate lmp = elf_lazy_load(clmp, bound, name); 27207c478bd9Sstevel@tonic-gate 27217c478bd9Sstevel@tonic-gate /* 27227c478bd9Sstevel@tonic-gate * If direct bindings have been disabled, and this isn't 27237c478bd9Sstevel@tonic-gate * a translator, skip any direct binding now that we've 272460758829Srie * ensured the resolving object has been loaded. 27257c478bd9Sstevel@tonic-gate * 27267c478bd9Sstevel@tonic-gate * If we need to direct bind to anything, we look in 27277c478bd9Sstevel@tonic-gate * ourselves, our parent, or in the link map we've just 27287c478bd9Sstevel@tonic-gate * loaded. Otherwise, even though we may have lazily 27297c478bd9Sstevel@tonic-gate * loaded an object we still continue to search for 27307c478bd9Sstevel@tonic-gate * symbols from the head of the link map list. 27317c478bd9Sstevel@tonic-gate */ 27327c478bd9Sstevel@tonic-gate if (((FLAGS(clmp) & FLG_RT_TRANS) || 273360758829Srie ((!(LIST(clmp)->lm_tflags & LML_TFLG_NODIRECT)) && 273460758829Srie (!(slp->sl_flags & LKUP_SINGLETON)))) && 27359a411307Srie ((FLAGS1(clmp) & FL1_RT_DIRECT) || 27367c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_DIRECTBIND))) { 27377c478bd9Sstevel@tonic-gate sym = lookup_sym_direct(slp, dlmp, binfo, 27387c478bd9Sstevel@tonic-gate sip, lmp); 27397c478bd9Sstevel@tonic-gate 27407c478bd9Sstevel@tonic-gate /* 274160758829Srie * Determine whether this direct binding has 274260758829Srie * been rejected. If we've bound to a singleton 274360758829Srie * without following a singleton search, then 274460758829Srie * return. The caller detects this condition 274560758829Srie * and will trigger a new singleton search. 274660758829Srie * 274760758829Srie * For any other rejection (such as binding to 274860758829Srie * a symbol labeled as nodirect - presumably 274960758829Srie * because the symbol definition has been 275060758829Srie * changed since the referring object was last 275160758829Srie * built), fall through to a standard symbol 27527c478bd9Sstevel@tonic-gate * search. 27537c478bd9Sstevel@tonic-gate */ 275460758829Srie if (((*binfo & BINFO_REJECTED) == 0) || 275560758829Srie (*binfo & BINFO_REJSINGLE)) 27567c478bd9Sstevel@tonic-gate return (sym); 275760758829Srie 275860758829Srie *binfo &= ~BINFO_REJECTED; 27597c478bd9Sstevel@tonic-gate } 27607c478bd9Sstevel@tonic-gate } 27617c478bd9Sstevel@tonic-gate } 27627c478bd9Sstevel@tonic-gate 276360758829Srie /* 276460758829Srie * Duplicate the lookup information, as we'll need to modify this 276560758829Srie * information for some of the following searches. 276660758829Srie */ 27677c478bd9Sstevel@tonic-gate sl = *slp; 27687c478bd9Sstevel@tonic-gate 27697c478bd9Sstevel@tonic-gate /* 27707c478bd9Sstevel@tonic-gate * If the referencing object has the DF_SYMBOLIC flag set, look in the 27717c478bd9Sstevel@tonic-gate * referencing object for the symbol first. Failing that, fall back to 27727c478bd9Sstevel@tonic-gate * our generic search. 27737c478bd9Sstevel@tonic-gate */ 277460758829Srie if ((FLAGS1(clmp) & FL1_RT_SYMBOLIC) && 277560758829Srie ((sl.sl_flags & LKUP_SINGLETON) == 0)) { 27767c478bd9Sstevel@tonic-gate sl.sl_imap = clmp; 27779a411307Srie if (sym = SYMINTP(clmp)(&sl, dlmp, binfo)) { 27789a411307Srie ulong_t dsymndx = (((ulong_t)sym - 27799a411307Srie (ulong_t)SYMTAB(*dlmp)) / SYMENT(*dlmp)); 27809a411307Srie 27819a411307Srie /* 27829a411307Srie * Make sure this symbol hasn't explicitly been defined 27839a411307Srie * as nodirect. 27849a411307Srie */ 27859a411307Srie if (((sip = SYMINFO(*dlmp)) == 0) || 27869a411307Srie /* LINTED */ 27879a411307Srie ((sip = (Syminfo *)((char *)sip + 27889a411307Srie (dsymndx * SYMINENT(*dlmp)))) == 0) || 27899a411307Srie ((sip->si_flags & SYMINFO_FLG_NOEXTDIRECT) == 0)) 27907c478bd9Sstevel@tonic-gate return (sym); 27917c478bd9Sstevel@tonic-gate } 27929a411307Srie } 27937c478bd9Sstevel@tonic-gate 279460758829Srie sl.sl_flags |= LKUP_STANDARD; 279560758829Srie 27967c478bd9Sstevel@tonic-gate /* 27977c478bd9Sstevel@tonic-gate * If this lookup originates from a standard relocation, then traverse 279860758829Srie * all link-map control lists, inspecting any object that is available 279960758829Srie * to this caller. Otherwise, traverse the link-map control list 280060758829Srie * associated with the caller. 28017c478bd9Sstevel@tonic-gate */ 280260758829Srie if (sl.sl_flags & LKUP_STDRELOC) { 28037c478bd9Sstevel@tonic-gate Aliste off; 28047c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 28057c478bd9Sstevel@tonic-gate 280660758829Srie sym = NULL; 28077c478bd9Sstevel@tonic-gate 2808*cce0e03bSab196087 for (ALIST_TRAVERSE_BY_OFFSET(LIST(clmp)->lm_lists, off, lmc)) { 280960758829Srie if (((sym = core_lookup_sym(lmc->lc_head, &sl, dlmp, 281060758829Srie binfo, off)) != NULL) || 281160758829Srie (*binfo & BINFO_REJSINGLE)) 28127c478bd9Sstevel@tonic-gate break; 28137c478bd9Sstevel@tonic-gate } 28147c478bd9Sstevel@tonic-gate } else 2815*cce0e03bSab196087 sym = core_lookup_sym(ilmp, &sl, dlmp, binfo, ALIST_OFF_DATA); 281660758829Srie 281760758829Srie /* 281860758829Srie * If a symbol binding was rejected, because a binding occurred to a 281960758829Srie * singleton without following the default symbol search, return so 282060758829Srie * that the search can be repreated. 282160758829Srie */ 282260758829Srie if (*binfo & BINFO_REJSINGLE) 282360758829Srie return (sym); 28247c478bd9Sstevel@tonic-gate 28257c478bd9Sstevel@tonic-gate /* 28267c478bd9Sstevel@tonic-gate * To allow transitioning into a world of lazy loading dependencies see 28277c478bd9Sstevel@tonic-gate * if this link map contains objects that have lazy dependencies still 28287c478bd9Sstevel@tonic-gate * outstanding. If so, and we haven't been able to locate a non-weak 28297c478bd9Sstevel@tonic-gate * symbol reference, start bringing in any lazy dependencies to see if 28307c478bd9Sstevel@tonic-gate * the reference can be satisfied. Use of dlsym(RTLD_PROBE) sets the 28317c478bd9Sstevel@tonic-gate * LKUP_NOFALBACK flag, and this flag disables this fall back. 28327c478bd9Sstevel@tonic-gate */ 283360758829Srie if ((sym == NULL) && ((sl.sl_flags & LKUP_NOFALBACK) == 0)) { 28347c478bd9Sstevel@tonic-gate if ((lmp = ilmp) == 0) 28357c478bd9Sstevel@tonic-gate lmp = LIST(clmp)->lm_head; 283660758829Srie if ((sl.sl_flags & LKUP_WEAK) || (LIST(lmp)->lm_lazy == 0)) 28377c478bd9Sstevel@tonic-gate return ((Sym *)0); 28387c478bd9Sstevel@tonic-gate 28395aefb655Srie DBG_CALL(Dbg_syms_lazy_rescan(LIST(clmp), name)); 28407c478bd9Sstevel@tonic-gate 28417c478bd9Sstevel@tonic-gate /* 28427c478bd9Sstevel@tonic-gate * If this request originated from a dlsym(RTLD_NEXT) then start 28437c478bd9Sstevel@tonic-gate * looking for dependencies from the caller, otherwise use the 28447c478bd9Sstevel@tonic-gate * initial link-map. 28457c478bd9Sstevel@tonic-gate */ 284660758829Srie if (sl.sl_flags & LKUP_NEXT) 28477c478bd9Sstevel@tonic-gate sym = _lazy_find_sym(clmp, &sl, dlmp, binfo); 28487c478bd9Sstevel@tonic-gate else { 2849*cce0e03bSab196087 Aliste idx; 28507c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 28517c478bd9Sstevel@tonic-gate 2852*cce0e03bSab196087 for (ALIST_TRAVERSE(LIST(clmp)->lm_lists, idx, lmc)) { 28537c478bd9Sstevel@tonic-gate sl.sl_flags |= LKUP_NOFALBACK; 28547c478bd9Sstevel@tonic-gate if ((sym = _lazy_find_sym(lmc->lc_head, &sl, 28557c478bd9Sstevel@tonic-gate dlmp, binfo)) != 0) 28567c478bd9Sstevel@tonic-gate break; 28577c478bd9Sstevel@tonic-gate } 28587c478bd9Sstevel@tonic-gate } 28597c478bd9Sstevel@tonic-gate } 286060758829Srie return (sym); 286160758829Srie } 286260758829Srie 286360758829Srie /* 286460758829Srie * Symbol lookup routine. Takes an ELF symbol name, and a list of link maps to 286560758829Srie * search. If successful, return a pointer to the symbol table entry, a 286660758829Srie * pointer to the link map of the enclosing object, and information relating 286760758829Srie * to the type of binding. Else return a null pointer. 286860758829Srie * 286960758829Srie * To improve elf performance, we first compute the elf hash value and pass 287060758829Srie * it to each find_sym() routine. The elf function will use this value to 287160758829Srie * locate the symbol, the a.out function will simply ignore it. 287260758829Srie */ 287360758829Srie Sym * 287460758829Srie lookup_sym(Slookup *slp, Rt_map **dlmp, uint_t *binfo) 287560758829Srie { 287660758829Srie const char *name = slp->sl_name; 287760758829Srie Rt_map *clmp = slp->sl_cmap; 287860758829Srie Sym *rsym = slp->sl_rsym, *sym = 0; 287960758829Srie uchar_t rtype = slp->sl_rtype; 288060758829Srie 288160758829Srie if (slp->sl_hash == 0) 288260758829Srie slp->sl_hash = elf_hash(name); 288360758829Srie *binfo = 0; 288460758829Srie 288560758829Srie /* 288660758829Srie * Establish any state that might be associated with a symbol reference. 288760758829Srie */ 288860758829Srie if (rsym) { 288960758829Srie if ((slp->sl_flags & LKUP_STDRELOC) && 289060758829Srie (ELF_ST_BIND(rsym->st_info) == STB_WEAK)) 289160758829Srie slp->sl_flags |= LKUP_WEAK; 289260758829Srie 289360758829Srie if (ELF_ST_VISIBILITY(rsym->st_other) == STV_SINGLETON) 289460758829Srie slp->sl_flags |= LKUP_SINGLETON; 289560758829Srie } 289660758829Srie 289760758829Srie /* 289860758829Srie * Establish any lookup state required for this type of relocation. 289960758829Srie */ 290060758829Srie if ((slp->sl_flags & LKUP_STDRELOC) && rtype) { 290160758829Srie if (rtype == M_R_COPY) 290260758829Srie slp->sl_flags |= LKUP_COPY; 290360758829Srie 290460758829Srie if (rtype != M_R_JMP_SLOT) 290560758829Srie slp->sl_flags |= LKUP_SPEC; 290660758829Srie } 290760758829Srie 290860758829Srie /* 290960758829Srie * Under ldd -w, any unresolved weak references are diagnosed. Set the 291060758829Srie * symbol binding as global to trigger a relocation error if the symbol 291160758829Srie * can not be found. 291260758829Srie */ 291360758829Srie if (rsym) { 291460758829Srie if (LIST(slp->sl_cmap)->lm_flags & LML_FLG_TRC_NOUNRESWEAK) 291560758829Srie slp->sl_bind = STB_GLOBAL; 291660758829Srie else if ((slp->sl_bind = ELF_ST_BIND(rsym->st_info)) == 291760758829Srie STB_WEAK) 291860758829Srie slp->sl_flags |= LKUP_WEAK; 291960758829Srie } 292060758829Srie 292160758829Srie /* 292260758829Srie * Carry out an initial symbol search. This search takes into account 292360758829Srie * all the modes of the requested search. 292460758829Srie */ 292560758829Srie if (((sym = _lookup_sym(slp, dlmp, binfo)) == NULL) && 292660758829Srie (*binfo & BINFO_REJSINGLE)) { 292760758829Srie Slookup sl = *slp; 292860758829Srie 292960758829Srie /* 293060758829Srie * If a binding has been rejected because of binding to a 293160758829Srie * singleton without going through a singleton search, then 293260758829Srie * reset the lookup data, and try again. 293360758829Srie */ 293460758829Srie sl.sl_imap = LIST(sl.sl_cmap)->lm_head; 293560758829Srie sl.sl_flags &= ~(LKUP_FIRST | LKUP_SELF | LKUP_NEXT); 293660758829Srie sl.sl_flags |= LKUP_SINGLETON; 293760758829Srie sl.sl_rsymndx = 0; 293860758829Srie *binfo &= ~BINFO_REJECTED; 293960758829Srie sym = _lookup_sym(&sl, dlmp, binfo); 294060758829Srie } 29417c478bd9Sstevel@tonic-gate 29427c478bd9Sstevel@tonic-gate /* 29437c478bd9Sstevel@tonic-gate * If the caller is restricted to a symbol search within its group, 29447c478bd9Sstevel@tonic-gate * determine if it is necessary to follow a binding from outside of 29457c478bd9Sstevel@tonic-gate * the group. 29467c478bd9Sstevel@tonic-gate */ 29477c478bd9Sstevel@tonic-gate if (sym && ((MODE(clmp) & (RTLD_GROUP | RTLD_WORLD)) == RTLD_GROUP)) { 29487c478bd9Sstevel@tonic-gate Sym * isym; 29497c478bd9Sstevel@tonic-gate 29507c478bd9Sstevel@tonic-gate if ((isym = lookup_sym_interpose(slp, dlmp, binfo, LIST(*dlmp), 29517c478bd9Sstevel@tonic-gate sym)) != 0) 29527c478bd9Sstevel@tonic-gate return (isym); 29537c478bd9Sstevel@tonic-gate } 29547c478bd9Sstevel@tonic-gate return (sym); 29557c478bd9Sstevel@tonic-gate } 29567c478bd9Sstevel@tonic-gate 29577c478bd9Sstevel@tonic-gate /* 29587c478bd9Sstevel@tonic-gate * Associate a binding descriptor with a caller and its dependency, or update 29597c478bd9Sstevel@tonic-gate * an existing descriptor. 29607c478bd9Sstevel@tonic-gate */ 29617c478bd9Sstevel@tonic-gate int 29627c478bd9Sstevel@tonic-gate bind_one(Rt_map *clmp, Rt_map *dlmp, uint_t flags) 29637c478bd9Sstevel@tonic-gate { 2964*cce0e03bSab196087 Bnd_desc *bdp; 2965*cce0e03bSab196087 Aliste idx; 29667c478bd9Sstevel@tonic-gate int found = ALE_CREATE; 29677c478bd9Sstevel@tonic-gate 29687c478bd9Sstevel@tonic-gate /* 29697c478bd9Sstevel@tonic-gate * Determine whether a binding descriptor already exists between the 29707c478bd9Sstevel@tonic-gate * two objects. 29717c478bd9Sstevel@tonic-gate */ 2972*cce0e03bSab196087 for (APLIST_TRAVERSE(DEPENDS(clmp), idx, bdp)) { 29737c478bd9Sstevel@tonic-gate if (bdp->b_depend == dlmp) { 29747c478bd9Sstevel@tonic-gate found = ALE_EXISTS; 29757c478bd9Sstevel@tonic-gate break; 29767c478bd9Sstevel@tonic-gate } 29777c478bd9Sstevel@tonic-gate } 29787c478bd9Sstevel@tonic-gate 29797c478bd9Sstevel@tonic-gate if (found == ALE_CREATE) { 29807c478bd9Sstevel@tonic-gate /* 29817c478bd9Sstevel@tonic-gate * Create a new binding descriptor. 29827c478bd9Sstevel@tonic-gate */ 29837c478bd9Sstevel@tonic-gate if ((bdp = malloc(sizeof (Bnd_desc))) == 0) 29847c478bd9Sstevel@tonic-gate return (0); 29857c478bd9Sstevel@tonic-gate 29867c478bd9Sstevel@tonic-gate bdp->b_caller = clmp; 29877c478bd9Sstevel@tonic-gate bdp->b_depend = dlmp; 29887c478bd9Sstevel@tonic-gate bdp->b_flags = 0; 29897c478bd9Sstevel@tonic-gate 29907c478bd9Sstevel@tonic-gate /* 29917c478bd9Sstevel@tonic-gate * Append the binding descriptor to the caller and the 29927c478bd9Sstevel@tonic-gate * dependency. 29937c478bd9Sstevel@tonic-gate */ 2994*cce0e03bSab196087 if (aplist_append(&DEPENDS(clmp), bdp, AL_CNT_DEPENDS) == 0) 29957c478bd9Sstevel@tonic-gate return (0); 29967c478bd9Sstevel@tonic-gate 2997*cce0e03bSab196087 if (aplist_append(&CALLERS(dlmp), bdp, AL_CNT_CALLERS) == 0) 29987c478bd9Sstevel@tonic-gate return (0); 29997c478bd9Sstevel@tonic-gate } 30007c478bd9Sstevel@tonic-gate 30017c478bd9Sstevel@tonic-gate if ((found == ALE_CREATE) || ((bdp->b_flags & flags) != flags)) { 30027c478bd9Sstevel@tonic-gate bdp->b_flags |= flags; 30037c478bd9Sstevel@tonic-gate 30047c478bd9Sstevel@tonic-gate if (flags & BND_REFER) 30057c478bd9Sstevel@tonic-gate FLAGS1(dlmp) |= FL1_RT_USED; 30067c478bd9Sstevel@tonic-gate 30075aefb655Srie DBG_CALL(Dbg_file_bind_entry(LIST(clmp), bdp)); 30087c478bd9Sstevel@tonic-gate } 30097c478bd9Sstevel@tonic-gate return (found); 30107c478bd9Sstevel@tonic-gate } 30117c478bd9Sstevel@tonic-gate 30127c478bd9Sstevel@tonic-gate /* 30137c478bd9Sstevel@tonic-gate * Cleanup after relocation processing. 30147c478bd9Sstevel@tonic-gate */ 30157c478bd9Sstevel@tonic-gate int 3016*cce0e03bSab196087 relocate_finish(Rt_map *lmp, APlist *bound, int textrel, int ret) 30177c478bd9Sstevel@tonic-gate { 30185aefb655Srie DBG_CALL(Dbg_reloc_run(lmp, 0, ret, DBG_REL_FINISH)); 30197c478bd9Sstevel@tonic-gate 30207c478bd9Sstevel@tonic-gate /* 30217c478bd9Sstevel@tonic-gate * Establish bindings to all objects that have been bound to. 30227c478bd9Sstevel@tonic-gate */ 30237c478bd9Sstevel@tonic-gate if (bound) { 3024*cce0e03bSab196087 Aliste idx; 3025*cce0e03bSab196087 Rt_map *_lmp; 30267c478bd9Sstevel@tonic-gate 30277c478bd9Sstevel@tonic-gate if (ret) { 3028*cce0e03bSab196087 for (APLIST_TRAVERSE(bound, idx, _lmp)) { 3029*cce0e03bSab196087 if (bind_one(lmp, _lmp, BND_REFER) == 0) { 30307c478bd9Sstevel@tonic-gate ret = 0; 30317c478bd9Sstevel@tonic-gate break; 30327c478bd9Sstevel@tonic-gate } 30337c478bd9Sstevel@tonic-gate } 30347c478bd9Sstevel@tonic-gate } 30357c478bd9Sstevel@tonic-gate free(bound); 30367c478bd9Sstevel@tonic-gate } 30377c478bd9Sstevel@tonic-gate 30387c478bd9Sstevel@tonic-gate /* 30397c478bd9Sstevel@tonic-gate * If we write enabled the text segment to perform these relocations 30407c478bd9Sstevel@tonic-gate * re-protect by disabling writes. 30417c478bd9Sstevel@tonic-gate */ 30427c478bd9Sstevel@tonic-gate if (textrel) 30437c478bd9Sstevel@tonic-gate (void) LM_SET_PROT(lmp)(lmp, 0); 30447c478bd9Sstevel@tonic-gate 30457c478bd9Sstevel@tonic-gate return (ret); 30467c478bd9Sstevel@tonic-gate } 3047