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 /* 23cce0e03bSab196087 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 27*7257d1b4Sraf /* 28*7257d1b4Sraf * Copyright (c) 1988 AT&T 29*7257d1b4Sraf * All Rights Reserved 30*7257d1b4Sraf */ 31*7257d1b4Sraf 32*7257d1b4Sraf #pragma ident "%Z%%M% %I% %E% SMI" 337c478bd9Sstevel@tonic-gate 347c478bd9Sstevel@tonic-gate #include <string.h> 357c478bd9Sstevel@tonic-gate #include <stdio.h> 367c478bd9Sstevel@tonic-gate #include <unistd.h> 377c478bd9Sstevel@tonic-gate #include <sys/stat.h> 387c478bd9Sstevel@tonic-gate #include <sys/mman.h> 397c478bd9Sstevel@tonic-gate #include <fcntl.h> 407c478bd9Sstevel@tonic-gate #include <limits.h> 417c478bd9Sstevel@tonic-gate #include <dlfcn.h> 427c478bd9Sstevel@tonic-gate #include <errno.h> 437c478bd9Sstevel@tonic-gate #include <link.h> 445aefb655Srie #include <debug.h> 455aefb655Srie #include <conv.h> 467c478bd9Sstevel@tonic-gate #include "_rtld.h" 477c478bd9Sstevel@tonic-gate #include "_audit.h" 487c478bd9Sstevel@tonic-gate #include "_elf.h" 497c478bd9Sstevel@tonic-gate #include "msg.h" 507c478bd9Sstevel@tonic-gate 517c478bd9Sstevel@tonic-gate static Fct *vector[] = { 527c478bd9Sstevel@tonic-gate &elf_fct, 537c478bd9Sstevel@tonic-gate #ifdef A_OUT 547c478bd9Sstevel@tonic-gate &aout_fct, 557c478bd9Sstevel@tonic-gate #endif 567c478bd9Sstevel@tonic-gate 0 577c478bd9Sstevel@tonic-gate }; 587c478bd9Sstevel@tonic-gate 597c478bd9Sstevel@tonic-gate /* 607c478bd9Sstevel@tonic-gate * If a load filter flag is in effect, and this object is a filter, trigger the 617c478bd9Sstevel@tonic-gate * loading of all its filtees. The load filter flag is in effect when creating 627c478bd9Sstevel@tonic-gate * configuration files, or when under the control of ldd(1), or the LD_LOADFLTR 637c478bd9Sstevel@tonic-gate * environment variable is set, or this object was built with the -zloadfltr 647c478bd9Sstevel@tonic-gate * flag. Otherwise, filtee loading is deferred until triggered by a relocation. 657c478bd9Sstevel@tonic-gate */ 667c478bd9Sstevel@tonic-gate static void 679aa23310Srie load_filtees(Rt_map *lmp, int *in_nfavl) 687c478bd9Sstevel@tonic-gate { 697c478bd9Sstevel@tonic-gate if ((FLAGS1(lmp) & MSK_RT_FILTER) && 707c478bd9Sstevel@tonic-gate ((FLAGS(lmp) & FLG_RT_LOADFLTR) || 717c478bd9Sstevel@tonic-gate (LIST(lmp)->lm_tflags & LML_TFLG_LOADFLTR))) { 727c478bd9Sstevel@tonic-gate Dyninfo *dip = DYNINFO(lmp); 737c478bd9Sstevel@tonic-gate uint_t cnt, max = DYNINFOCNT(lmp); 747c478bd9Sstevel@tonic-gate Slookup sl; 757c478bd9Sstevel@tonic-gate 7675e7992aSrie /* 7775e7992aSrie * Initialize the symbol lookup data structure. 7875e7992aSrie */ 7975e7992aSrie SLOOKUP_INIT(sl, 0, lmp, lmp, ld_entry_cnt, 0, 0, 0, 0, 0); 807c478bd9Sstevel@tonic-gate 817c478bd9Sstevel@tonic-gate for (cnt = 0; cnt < max; cnt++, dip++) { 827c478bd9Sstevel@tonic-gate if (((dip->di_flags & MSK_DI_FILTER) == 0) || 837c478bd9Sstevel@tonic-gate ((dip->di_flags & FLG_DI_AUXFLTR) && 847c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_NOAUXFLTR))) 857c478bd9Sstevel@tonic-gate continue; 869aa23310Srie (void) elf_lookup_filtee(&sl, 0, 0, cnt, in_nfavl); 877c478bd9Sstevel@tonic-gate } 887c478bd9Sstevel@tonic-gate } 897c478bd9Sstevel@tonic-gate } 907c478bd9Sstevel@tonic-gate 917c478bd9Sstevel@tonic-gate /* 927c478bd9Sstevel@tonic-gate * Analyze one or more link-maps of a link map control list. This routine is 937c478bd9Sstevel@tonic-gate * called at startup to continue the processing of the main executable. It is 947c478bd9Sstevel@tonic-gate * also called each time a new set of objects are loaded, ie. from filters, 957c478bd9Sstevel@tonic-gate * lazy-loaded objects, or dlopen(). 967c478bd9Sstevel@tonic-gate * 977c478bd9Sstevel@tonic-gate * In each instance we traverse the link-map control list starting with the 987c478bd9Sstevel@tonic-gate * initial object. As dependencies are analyzed they are added to the link-map 997c478bd9Sstevel@tonic-gate * control list. Thus the list grows as we traverse it - this results in the 1007c478bd9Sstevel@tonic-gate * breadth first ordering of all needed objects. 1017c478bd9Sstevel@tonic-gate */ 1027c478bd9Sstevel@tonic-gate int 1039aa23310Srie analyze_lmc(Lm_list *lml, Aliste nlmco, Rt_map *nlmp, int *in_nfavl) 1047c478bd9Sstevel@tonic-gate { 1057c478bd9Sstevel@tonic-gate Rt_map *lmp = nlmp; 1067c478bd9Sstevel@tonic-gate Lm_cntl *nlmc; 1077c478bd9Sstevel@tonic-gate int ret = 1; 1087c478bd9Sstevel@tonic-gate 1097c478bd9Sstevel@tonic-gate /* 1107c478bd9Sstevel@tonic-gate * If this link-map control list is being analyzed, return. The object 1117c478bd9Sstevel@tonic-gate * that has just been added will be picked up by the existing analysis 1127c478bd9Sstevel@tonic-gate * thread. Note, this is only really meaningful during process init- 1137c478bd9Sstevel@tonic-gate * ialization, as objects are added to the main link-map control list. 1147c478bd9Sstevel@tonic-gate * Following this initialization, each family of objects that are loaded 1157c478bd9Sstevel@tonic-gate * are added to a new link-map control list. 1167c478bd9Sstevel@tonic-gate */ 1177c478bd9Sstevel@tonic-gate /* LINTED */ 118cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 1197c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_ANALYZING) 1207c478bd9Sstevel@tonic-gate return (1); 1217c478bd9Sstevel@tonic-gate 1227c478bd9Sstevel@tonic-gate /* 1237c478bd9Sstevel@tonic-gate * If this object doesn't belong to the present link-map control list 1247c478bd9Sstevel@tonic-gate * then it must already have been analyzed, or it is in the process of 1257c478bd9Sstevel@tonic-gate * being analyzed prior to us recursing into this analysis. In either 1267c478bd9Sstevel@tonic-gate * case, ignore the object as it's already being taken care of. 1277c478bd9Sstevel@tonic-gate */ 1287c478bd9Sstevel@tonic-gate if (nlmco != CNTL(nlmp)) 1297c478bd9Sstevel@tonic-gate return (1); 1307c478bd9Sstevel@tonic-gate 1317c478bd9Sstevel@tonic-gate nlmc->lc_flags |= LMC_FLG_ANALYZING; 1327c478bd9Sstevel@tonic-gate 1337c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 1347c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & 1357c478bd9Sstevel@tonic-gate (FLG_RT_ANALZING | FLG_RT_ANALYZED | FLG_RT_DELETE)) 1367c478bd9Sstevel@tonic-gate continue; 1377c478bd9Sstevel@tonic-gate 1387c478bd9Sstevel@tonic-gate /* 1397c478bd9Sstevel@tonic-gate * Indicate that analyzing is under way. 1407c478bd9Sstevel@tonic-gate */ 1417c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_ANALZING; 1427c478bd9Sstevel@tonic-gate 1437c478bd9Sstevel@tonic-gate /* 1447c478bd9Sstevel@tonic-gate * If this link map represents a relocatable object, then we 1457c478bd9Sstevel@tonic-gate * need to finish the link-editing of the object at this point. 1467c478bd9Sstevel@tonic-gate */ 1477c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_OBJECT) { 1489aa23310Srie if (elf_obj_fini(lml, lmp, in_nfavl) == 0) { 1497c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) 1507c478bd9Sstevel@tonic-gate continue; 1517c478bd9Sstevel@tonic-gate ret = 0; 1527c478bd9Sstevel@tonic-gate break; 1537c478bd9Sstevel@tonic-gate } 1547c478bd9Sstevel@tonic-gate } 1557c478bd9Sstevel@tonic-gate 1567c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_analyze(lmp)); 1577c478bd9Sstevel@tonic-gate 1587c478bd9Sstevel@tonic-gate /* 1597c478bd9Sstevel@tonic-gate * Establish any dependencies this object requires. 1607c478bd9Sstevel@tonic-gate */ 1619aa23310Srie if (LM_NEEDED(lmp)(lml, nlmco, lmp, in_nfavl) == 0) { 1627c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) 1637c478bd9Sstevel@tonic-gate continue; 1647c478bd9Sstevel@tonic-gate ret = 0; 1657c478bd9Sstevel@tonic-gate break; 1667c478bd9Sstevel@tonic-gate } 1677c478bd9Sstevel@tonic-gate 1687c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_ANALZING; 1697c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_ANALYZED; 1707c478bd9Sstevel@tonic-gate 1717c478bd9Sstevel@tonic-gate /* 1727c478bd9Sstevel@tonic-gate * If we're building a configuration file, determine if this 1737c478bd9Sstevel@tonic-gate * object is a filter and if so load its filtees. This 1747c478bd9Sstevel@tonic-gate * traversal is only necessary for crle(1), as typical use of 1757c478bd9Sstevel@tonic-gate * an object will load filters as part of relocation processing. 1767c478bd9Sstevel@tonic-gate */ 1777c478bd9Sstevel@tonic-gate if (MODE(nlmp) & RTLD_CONFGEN) 1789aa23310Srie load_filtees(lmp, in_nfavl); 1797c478bd9Sstevel@tonic-gate 1807c478bd9Sstevel@tonic-gate /* 1817c478bd9Sstevel@tonic-gate * If an interposer has been added, it will have been inserted 1827c478bd9Sstevel@tonic-gate * in the link-map before the link we're presently analyzing. 1837c478bd9Sstevel@tonic-gate * Break out of this analysis loop and return to the head of 1847c478bd9Sstevel@tonic-gate * the link-map control list to analyze the interposer. Note 1857c478bd9Sstevel@tonic-gate * that this rescan preserves the breadth first loading of 1867c478bd9Sstevel@tonic-gate * dependencies. 1877c478bd9Sstevel@tonic-gate */ 18824a6229eSrie /* LINTED */ 189cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 1907c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_REANALYZE) { 1917c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_REANALYZE; 1927c478bd9Sstevel@tonic-gate lmp = nlmc->lc_head; 1937c478bd9Sstevel@tonic-gate } 1947c478bd9Sstevel@tonic-gate } 1957c478bd9Sstevel@tonic-gate 19624a6229eSrie /* LINTED */ 197cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 1987c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_ANALYZING; 1997c478bd9Sstevel@tonic-gate 2007c478bd9Sstevel@tonic-gate return (ret); 2017c478bd9Sstevel@tonic-gate } 2027c478bd9Sstevel@tonic-gate 2037c478bd9Sstevel@tonic-gate /* 204466e2a62Srie * Determine whether a symbol represents zero, .bss, bits. Most commonly this 205466e2a62Srie * function is used to determine whether the data for a copy relocation refers 206466e2a62Srie * to initialized data or .bss. If the data definition is within .bss, then the 207466e2a62Srie * data is zero filled, and as the copy destination within the executable is 208466e2a62Srie * .bss, we can skip copying zero's to zero's. 209466e2a62Srie * 210466e2a62Srie * However, if the defining object has MOVE data, it's .bss might contain 211466e2a62Srie * non-zero data, in which case copy the definition regardless. 212466e2a62Srie * 213466e2a62Srie * For backward compatibility copy relocation processing, this routine can be 214466e2a62Srie * used to determine precisely if a copy destination is a move record recipient. 2157c478bd9Sstevel@tonic-gate */ 2167c478bd9Sstevel@tonic-gate static int 217466e2a62Srie are_bits_zero(Rt_map *dlmp, Sym *dsym, int dest) 2187c478bd9Sstevel@tonic-gate { 219466e2a62Srie Mmap *mmap = NULL, *mmaps; 2207c478bd9Sstevel@tonic-gate caddr_t daddr = (caddr_t)dsym->st_value; 2217c478bd9Sstevel@tonic-gate 2227c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & FLG_RT_FIXED) == 0) 2237c478bd9Sstevel@tonic-gate daddr += ADDR(dlmp); 2247c478bd9Sstevel@tonic-gate 225466e2a62Srie /* 226466e2a62Srie * Determine the segment that contains the copy definition. Given that 227466e2a62Srie * the copy relocation records have already been captured and verified, 228466e2a62Srie * a segment must be found (but we add an escape clause never the less). 229466e2a62Srie */ 2307c478bd9Sstevel@tonic-gate for (mmaps = MMAPS(dlmp); mmaps->m_vaddr; mmaps++) { 231466e2a62Srie if ((daddr >= mmaps->m_vaddr) && 232466e2a62Srie (daddr < (mmaps->m_vaddr + mmaps->m_msize))) { 233466e2a62Srie mmap = mmaps; 234466e2a62Srie break; 235466e2a62Srie } 236466e2a62Srie } 237466e2a62Srie if (mmap == NULL) 2387c478bd9Sstevel@tonic-gate return (1); 239466e2a62Srie 240466e2a62Srie /* 241466e2a62Srie * If the definition is not within .bss, indicate this is not zero data. 242466e2a62Srie */ 243466e2a62Srie if (daddr < (mmap->m_vaddr + mmaps->m_fsize)) 2447c478bd9Sstevel@tonic-gate return (0); 245466e2a62Srie 246466e2a62Srie /* 247466e2a62Srie * If the definition is within .bss, make sure the definition isn't the 248466e2a62Srie * recipient of a move record. Note, we don't precisely analyze whether 249466e2a62Srie * the address is a move record recipient, as the infrastructure to 250466e2a62Srie * prepare for, and carry out this analysis, is probably more costly 251466e2a62Srie * than just copying the bytes regardless. 252466e2a62Srie */ 253466e2a62Srie if ((FLAGS(dlmp) & FLG_RT_MOVE) == 0) 254466e2a62Srie return (1); 255466e2a62Srie 256466e2a62Srie /* 257466e2a62Srie * However, for backward compatibility copy relocation processing, we 258466e2a62Srie * can afford to work a little harder. Here, determine precisely 259466e2a62Srie * whether the destination in the executable is a move record recipient. 260466e2a62Srie * See comments in lookup_sym_interpose(), below. 261466e2a62Srie */ 262466e2a62Srie if (dest && is_move_data(daddr)) 263466e2a62Srie return (0); 264466e2a62Srie 265466e2a62Srie return (1); 2667c478bd9Sstevel@tonic-gate } 2677c478bd9Sstevel@tonic-gate 2687c478bd9Sstevel@tonic-gate /* 2697c478bd9Sstevel@tonic-gate * Relocate an individual object. 2707c478bd9Sstevel@tonic-gate */ 2717c478bd9Sstevel@tonic-gate static int 2729aa23310Srie relocate_so(Lm_list *lml, Rt_map *lmp, int *relocated, int now, int *in_nfavl) 2737c478bd9Sstevel@tonic-gate { 2747c478bd9Sstevel@tonic-gate /* 2757c478bd9Sstevel@tonic-gate * If we're running under ldd(1), and haven't been asked to trace any 2767c478bd9Sstevel@tonic-gate * warnings, skip any actual relocation processing. 2777c478bd9Sstevel@tonic-gate */ 2787c478bd9Sstevel@tonic-gate if (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 2797c478bd9Sstevel@tonic-gate (lml->lm_flags & LML_FLG_TRC_WARN)) { 2807c478bd9Sstevel@tonic-gate 2817c478bd9Sstevel@tonic-gate if (relocated) 2827c478bd9Sstevel@tonic-gate (*relocated)++; 2837c478bd9Sstevel@tonic-gate 2849aa23310Srie if ((LM_RELOC(lmp)(lmp, now, in_nfavl) == 0) && 2857c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0)) 2867c478bd9Sstevel@tonic-gate return (0); 2877c478bd9Sstevel@tonic-gate } 2887c478bd9Sstevel@tonic-gate return (1); 2897c478bd9Sstevel@tonic-gate } 2907c478bd9Sstevel@tonic-gate 2917c478bd9Sstevel@tonic-gate /* 2927c478bd9Sstevel@tonic-gate * Relocate the objects on a link-map control list. 2937c478bd9Sstevel@tonic-gate */ 2947c478bd9Sstevel@tonic-gate static int 2959aa23310Srie _relocate_lmc(Lm_list *lml, Rt_map *nlmp, int *relocated, int *in_nfavl) 2967c478bd9Sstevel@tonic-gate { 2977c478bd9Sstevel@tonic-gate Rt_map *lmp; 2987c478bd9Sstevel@tonic-gate 2997c478bd9Sstevel@tonic-gate for (lmp = nlmp; lmp; lmp = (Rt_map *)NEXT(lmp)) { 3007c478bd9Sstevel@tonic-gate /* 3017c478bd9Sstevel@tonic-gate * If this object has already been relocated, we're done. If 3027c478bd9Sstevel@tonic-gate * this object is being deleted, skip it, there's probably a 3037c478bd9Sstevel@tonic-gate * relocation error somewhere that's causing this deletion. 3047c478bd9Sstevel@tonic-gate */ 3057c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & 3067c478bd9Sstevel@tonic-gate (FLG_RT_RELOCING | FLG_RT_RELOCED | FLG_RT_DELETE)) 3077c478bd9Sstevel@tonic-gate continue; 3087c478bd9Sstevel@tonic-gate 3097c478bd9Sstevel@tonic-gate /* 3107c478bd9Sstevel@tonic-gate * Indicate that relocation processing is under way. 3117c478bd9Sstevel@tonic-gate */ 3127c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_RELOCING; 3137c478bd9Sstevel@tonic-gate 3147c478bd9Sstevel@tonic-gate /* 3157c478bd9Sstevel@tonic-gate * Relocate the object. 3167c478bd9Sstevel@tonic-gate */ 3179aa23310Srie if (relocate_so(lml, lmp, relocated, 0, in_nfavl) == 0) 3187c478bd9Sstevel@tonic-gate return (0); 3197c478bd9Sstevel@tonic-gate 3207c478bd9Sstevel@tonic-gate /* 3217c478bd9Sstevel@tonic-gate * Indicate that the objects relocation is complete. 3227c478bd9Sstevel@tonic-gate */ 3237c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_RELOCING; 3247c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_RELOCED; 3257c478bd9Sstevel@tonic-gate 3267c478bd9Sstevel@tonic-gate /* 3277c478bd9Sstevel@tonic-gate * Mark this object's init is available for harvesting. Under 3287c478bd9Sstevel@tonic-gate * ldd(1) this marking is necessary for -i (tsort) gathering. 3297c478bd9Sstevel@tonic-gate */ 3307c478bd9Sstevel@tonic-gate lml->lm_init++; 331dffec89cSrie lml->lm_flags |= LML_FLG_OBJADDED; 3327c478bd9Sstevel@tonic-gate 3337c478bd9Sstevel@tonic-gate /* 334466e2a62Srie * Process any move data. Note, this is carried out under ldd 335466e2a62Srie * under relocation processing too, as it can flush out move 336466e2a62Srie * errors, and enables lari(1) to provide a true representation 337466e2a62Srie * of the runtime bindings. 3387c478bd9Sstevel@tonic-gate */ 33910a4fa49Srie if ((FLAGS(lmp) & FLG_RT_MOVE) && 340466e2a62Srie (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 341466e2a62Srie (lml->lm_flags & LML_FLG_TRC_WARN))) { 342466e2a62Srie if (move_data(lmp) == 0) 343466e2a62Srie return (0); 344466e2a62Srie } 3457c478bd9Sstevel@tonic-gate 3467c478bd9Sstevel@tonic-gate /* 3477c478bd9Sstevel@tonic-gate * Determine if this object is a filter, and if a load filter 3487c478bd9Sstevel@tonic-gate * flag is in effect, trigger the loading of all its filtees. 3497c478bd9Sstevel@tonic-gate */ 3509aa23310Srie load_filtees(lmp, in_nfavl); 3517c478bd9Sstevel@tonic-gate } 3527c478bd9Sstevel@tonic-gate 3537c478bd9Sstevel@tonic-gate /* 3547c478bd9Sstevel@tonic-gate * Perform special copy relocations. These are only meaningful for 3557c478bd9Sstevel@tonic-gate * dynamic executables (fixed and head of their link-map list). If 3567c478bd9Sstevel@tonic-gate * this ever has to change then the infrastructure of COPY() has to 357cce0e03bSab196087 * change. Presently, a given link map can only have a receiver or 358cce0e03bSab196087 * supplier of copy data, so a union is used to overlap the storage 359cce0e03bSab196087 * for the COPY_R() and COPY_S() lists. These lists would need to 360cce0e03bSab196087 * be separated. 3617c478bd9Sstevel@tonic-gate */ 3627c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_FIXED) && (nlmp == LIST(nlmp)->lm_head) && 3637c478bd9Sstevel@tonic-gate (((lml->lm_flags & LML_FLG_TRC_ENABLE) == 0) || 3647c478bd9Sstevel@tonic-gate (lml->lm_flags & LML_FLG_TRC_WARN))) { 365cce0e03bSab196087 Rt_map *lmp; 366cce0e03bSab196087 Aliste idx1; 3677c478bd9Sstevel@tonic-gate Word tracing; 3687c478bd9Sstevel@tonic-gate 36902ca3e02Srie #if defined(__i386) 3707c478bd9Sstevel@tonic-gate if (elf_copy_gen(nlmp) == 0) 3717c478bd9Sstevel@tonic-gate return (0); 3727c478bd9Sstevel@tonic-gate #endif 373cce0e03bSab196087 if (COPY_S(nlmp) == NULL) 3747c478bd9Sstevel@tonic-gate return (1); 3757c478bd9Sstevel@tonic-gate 3767c478bd9Sstevel@tonic-gate if ((LIST(nlmp)->lm_flags & LML_FLG_TRC_ENABLE) && 3777c478bd9Sstevel@tonic-gate (((rtld_flags & RT_FL_SILENCERR) == 0) || 3787c478bd9Sstevel@tonic-gate (LIST(nlmp)->lm_flags & LML_FLG_TRC_VERBOSE))) 3797c478bd9Sstevel@tonic-gate tracing = 1; 3807c478bd9Sstevel@tonic-gate else 3817c478bd9Sstevel@tonic-gate tracing = 0; 3827c478bd9Sstevel@tonic-gate 3835aefb655Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 3847c478bd9Sstevel@tonic-gate 385cce0e03bSab196087 for (APLIST_TRAVERSE(COPY_S(nlmp), idx1, lmp)) { 3867c478bd9Sstevel@tonic-gate Rel_copy *rcp; 387cce0e03bSab196087 Aliste idx2; 3887c478bd9Sstevel@tonic-gate 389cce0e03bSab196087 for (ALIST_TRAVERSE(COPY_R(lmp), idx2, rcp)) { 3907c478bd9Sstevel@tonic-gate int zero; 3917c478bd9Sstevel@tonic-gate 3927c478bd9Sstevel@tonic-gate /* 393466e2a62Srie * Only copy the data if the data is from 394466e2a62Srie * a non-zero definition (ie. not .bss). 3957c478bd9Sstevel@tonic-gate */ 396466e2a62Srie zero = are_bits_zero(rcp->r_dlmp, 397466e2a62Srie rcp->r_dsym, 0); 3985aefb655Srie DBG_CALL(Dbg_reloc_copy(rcp->r_dlmp, nlmp, 3995aefb655Srie rcp->r_name, zero)); 4007c478bd9Sstevel@tonic-gate if (zero) 4017c478bd9Sstevel@tonic-gate continue; 4027c478bd9Sstevel@tonic-gate 4037c478bd9Sstevel@tonic-gate (void) memcpy(rcp->r_radd, rcp->r_dadd, 4047c478bd9Sstevel@tonic-gate rcp->r_size); 4057c478bd9Sstevel@tonic-gate 4067c478bd9Sstevel@tonic-gate if ((tracing == 0) || ((FLAGS1(rcp->r_dlmp) & 4077c478bd9Sstevel@tonic-gate FL1_RT_DISPREL) == 0)) 4087c478bd9Sstevel@tonic-gate continue; 4097c478bd9Sstevel@tonic-gate 4107c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_REL_CPYDISP), 4117c478bd9Sstevel@tonic-gate demangle(rcp->r_name), NAME(rcp->r_dlmp)); 4127c478bd9Sstevel@tonic-gate } 4137c478bd9Sstevel@tonic-gate } 4147c478bd9Sstevel@tonic-gate 4155aefb655Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 4167c478bd9Sstevel@tonic-gate 417cce0e03bSab196087 free(COPY_S(nlmp)); 418cce0e03bSab196087 COPY_S(nlmp) = 0; 4197c478bd9Sstevel@tonic-gate } 4207c478bd9Sstevel@tonic-gate return (1); 4217c478bd9Sstevel@tonic-gate } 4227c478bd9Sstevel@tonic-gate 4237c478bd9Sstevel@tonic-gate int 4249aa23310Srie relocate_lmc(Lm_list *lml, Aliste nlmco, Rt_map *clmp, Rt_map *nlmp, 4259aa23310Srie int *in_nfavl) 4267c478bd9Sstevel@tonic-gate { 4277c478bd9Sstevel@tonic-gate int lret = 1, pret = 1; 428cce0e03bSab196087 APlist *alp; 4297c478bd9Sstevel@tonic-gate Aliste plmco; 4307c478bd9Sstevel@tonic-gate Lm_cntl *plmc, *nlmc; 4317c478bd9Sstevel@tonic-gate 4327c478bd9Sstevel@tonic-gate /* 4337c478bd9Sstevel@tonic-gate * If this link-map control list is being relocated, return. The object 4347c478bd9Sstevel@tonic-gate * that has just been added will be picked up by the existing relocation 4357c478bd9Sstevel@tonic-gate * thread. Note, this is only really meaningful during process init- 4367c478bd9Sstevel@tonic-gate * ialization, as objects are added to the main link-map control list. 4377c478bd9Sstevel@tonic-gate * Following this initialization, each family of objects that are loaded 4387c478bd9Sstevel@tonic-gate * are added to a new link-map control list. 4397c478bd9Sstevel@tonic-gate */ 4407c478bd9Sstevel@tonic-gate /* LINTED */ 441cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 4427c478bd9Sstevel@tonic-gate 4437c478bd9Sstevel@tonic-gate if (nlmc->lc_flags & LMC_FLG_RELOCATING) 4447c478bd9Sstevel@tonic-gate return (1); 4457c478bd9Sstevel@tonic-gate 4467c478bd9Sstevel@tonic-gate nlmc->lc_flags |= LMC_FLG_RELOCATING; 4477c478bd9Sstevel@tonic-gate 4487c478bd9Sstevel@tonic-gate /* 4497c478bd9Sstevel@tonic-gate * Relocate one or more link-maps of a link map control list. If this 4507c478bd9Sstevel@tonic-gate * object doesn't belong to the present link-map control list then it 4517c478bd9Sstevel@tonic-gate * must already have been relocated, or it is in the process of being 4527c478bd9Sstevel@tonic-gate * relocated prior to us recursing into this relocation. In either 4537c478bd9Sstevel@tonic-gate * case, ignore the object as it's already being taken care of, however, 4547c478bd9Sstevel@tonic-gate * fall through and capture any relocation promotions that might have 4557c478bd9Sstevel@tonic-gate * been established from the reference mode of this object. 4567c478bd9Sstevel@tonic-gate * 4577c478bd9Sstevel@tonic-gate * If we're generating a configuration file using crle(1), two passes 4587c478bd9Sstevel@tonic-gate * may be involved. Under the first pass, RTLD_CONFGEN is set. Under 4597c478bd9Sstevel@tonic-gate * this pass, crle() loads objects into the process address space. No 4607c478bd9Sstevel@tonic-gate * relocation is necessary at this point, we simply need to analyze the 4617c478bd9Sstevel@tonic-gate * objects to insure any directly bound dependencies, filtees, etc. 4627c478bd9Sstevel@tonic-gate * get loaded. Although we skip the relocation, fall through to insure 4637c478bd9Sstevel@tonic-gate * any control lists are maintained appropriately. 4647c478bd9Sstevel@tonic-gate * 4657c478bd9Sstevel@tonic-gate * If objects are to be dldump(3c)'ed, crle(1) makes a second pass, 4667c478bd9Sstevel@tonic-gate * using RTLD_NOW and RTLD_CONFGEN. The RTLD_NOW effectively carries 4677c478bd9Sstevel@tonic-gate * out the relocations of all loaded objects. 4687c478bd9Sstevel@tonic-gate */ 4697c478bd9Sstevel@tonic-gate if ((nlmco == CNTL(nlmp)) && 4707c478bd9Sstevel@tonic-gate ((MODE(nlmp) & (RTLD_NOW | RTLD_CONFGEN)) != RTLD_CONFGEN)) { 4717c478bd9Sstevel@tonic-gate int relocated = 0; 4727c478bd9Sstevel@tonic-gate 4737c478bd9Sstevel@tonic-gate /* 4747c478bd9Sstevel@tonic-gate * Determine whether the initial link-map control list has 4757c478bd9Sstevel@tonic-gate * started relocation. From this point, should any interposing 4767c478bd9Sstevel@tonic-gate * objects be added to this link-map control list, the objects 4777c478bd9Sstevel@tonic-gate * are demoted to standard objects. Their interposition can't 4787c478bd9Sstevel@tonic-gate * be guaranteed once relocations have been carried out. 4797c478bd9Sstevel@tonic-gate */ 480cce0e03bSab196087 if (nlmco == ALIST_OFF_DATA) 4817c478bd9Sstevel@tonic-gate lml->lm_flags |= LML_FLG_STARTREL; 4827c478bd9Sstevel@tonic-gate 4837c478bd9Sstevel@tonic-gate /* 48402ca3e02Srie * Relocate the link-map control list. Should this relocation 48502ca3e02Srie * fail, clean up this link-map list. Relocations within this 48602ca3e02Srie * list may have required relocation promotions on other lists, 48702ca3e02Srie * so before acting upon these, and possibly adding more objects 48802ca3e02Srie * to the present link-map control list, try and clean up any 48902ca3e02Srie * failed objects now. 4907c478bd9Sstevel@tonic-gate */ 4919aa23310Srie lret = _relocate_lmc(lml, nlmp, &relocated, in_nfavl); 492cce0e03bSab196087 if ((lret == 0) && (nlmco != ALIST_OFF_DATA)) 49302ca3e02Srie remove_lmc(lml, clmp, nlmc, nlmco, NAME(nlmp)); 4947c478bd9Sstevel@tonic-gate } 4957c478bd9Sstevel@tonic-gate 4967c478bd9Sstevel@tonic-gate /* 4977c478bd9Sstevel@tonic-gate * Determine the new, and previous link-map control lists. 4987c478bd9Sstevel@tonic-gate */ 49924a6229eSrie /* LINTED */ 500cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 501cce0e03bSab196087 if (nlmco == ALIST_OFF_DATA) { 5026679fdc0Srie plmco = nlmco; 5037c478bd9Sstevel@tonic-gate plmc = nlmc; 5046679fdc0Srie } else { 5057c478bd9Sstevel@tonic-gate plmco = nlmco - lml->lm_lists->al_size; 5067c478bd9Sstevel@tonic-gate /* LINTED */ 507cce0e03bSab196087 plmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, plmco); 5087c478bd9Sstevel@tonic-gate } 5097c478bd9Sstevel@tonic-gate 5107c478bd9Sstevel@tonic-gate /* 5117c478bd9Sstevel@tonic-gate * Having completed this control list of objects, they can now be bound 5127c478bd9Sstevel@tonic-gate * to from other objects. Move this control list to the control list 5137c478bd9Sstevel@tonic-gate * that precedes it. Although this control list may have only bound to 5147c478bd9Sstevel@tonic-gate * controls lists much higher up the control list stack, it must only 5157c478bd9Sstevel@tonic-gate * be moved up one control list so as to preserve the link-map order 5167c478bd9Sstevel@tonic-gate * that may have already been traversed in search of symbols. 5177c478bd9Sstevel@tonic-gate */ 518cce0e03bSab196087 if (lret && (nlmco != ALIST_OFF_DATA) && nlmc->lc_head) 5197c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 5207c478bd9Sstevel@tonic-gate 5217c478bd9Sstevel@tonic-gate /* 5227c478bd9Sstevel@tonic-gate * Determine whether existing objects that have already been relocated, 5237c478bd9Sstevel@tonic-gate * need any additional relocations performed. This can occur when new 5247c478bd9Sstevel@tonic-gate * objects are loaded with RTLD_NOW, and these new objects have 5257c478bd9Sstevel@tonic-gate * dependencies on objects that are already loaded. Note, that we peel 5267c478bd9Sstevel@tonic-gate * any relocation promotions off of one control list at a time. This 5277c478bd9Sstevel@tonic-gate * prevents relocations from being bound to objects that might yet fail 5287c478bd9Sstevel@tonic-gate * to relocate themselves. 5297c478bd9Sstevel@tonic-gate */ 530cce0e03bSab196087 while ((alp = plmc->lc_now) != NULL) { 531cce0e03bSab196087 Aliste idx; 532cce0e03bSab196087 Rt_map *lmp; 5337c478bd9Sstevel@tonic-gate 5347c478bd9Sstevel@tonic-gate /* 5357c478bd9Sstevel@tonic-gate * Remove the relocation promotion list, as performing more 5367c478bd9Sstevel@tonic-gate * relocations may result in discovering more objects that need 5377c478bd9Sstevel@tonic-gate * promotion. 5387c478bd9Sstevel@tonic-gate */ 539cce0e03bSab196087 plmc->lc_now = NULL; 5407c478bd9Sstevel@tonic-gate 541cce0e03bSab196087 for (APLIST_TRAVERSE(alp, idx, lmp)) { 5427c478bd9Sstevel@tonic-gate /* 5437c478bd9Sstevel@tonic-gate * If the original relocation of the link-map control 5447c478bd9Sstevel@tonic-gate * list failed, or one of the relocation promotions of 5457c478bd9Sstevel@tonic-gate * this loop has failed, demote any pending objects 5467c478bd9Sstevel@tonic-gate * relocation mode. 5477c478bd9Sstevel@tonic-gate */ 5487c478bd9Sstevel@tonic-gate if ((lret == 0) || (pret == 0)) { 5497c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_NOW; 5507c478bd9Sstevel@tonic-gate MODE(lmp) |= RTLD_LAZY; 5517c478bd9Sstevel@tonic-gate continue; 5527c478bd9Sstevel@tonic-gate } 5537c478bd9Sstevel@tonic-gate 5547c478bd9Sstevel@tonic-gate /* 5557c478bd9Sstevel@tonic-gate * If a relocation fails, save the error condition. 5567c478bd9Sstevel@tonic-gate * It's possible that all new objects on the original 5577c478bd9Sstevel@tonic-gate * link-map control list have been relocated 5587c478bd9Sstevel@tonic-gate * successfully, but if the user request requires 5597c478bd9Sstevel@tonic-gate * promoting objects that have already been loaded, we 5607c478bd9Sstevel@tonic-gate * have to indicate that this operation couldn't be 5617c478bd9Sstevel@tonic-gate * performed. The unrelocated objects are in use on 5627c478bd9Sstevel@tonic-gate * another control list, and may continue to be used. 5637c478bd9Sstevel@tonic-gate * If the .plt that resulted in the error is called, 5647c478bd9Sstevel@tonic-gate * then the process will receive a fatal error at that 5657c478bd9Sstevel@tonic-gate * time. But, the .plt may never be called. 5667c478bd9Sstevel@tonic-gate */ 5679aa23310Srie if (relocate_so(lml, lmp, 0, 1, in_nfavl) == 0) 5687c478bd9Sstevel@tonic-gate pret = 0; 5697c478bd9Sstevel@tonic-gate } 5707c478bd9Sstevel@tonic-gate 5717c478bd9Sstevel@tonic-gate /* 5727c478bd9Sstevel@tonic-gate * Having promoted any objects, determine whether additional 5737c478bd9Sstevel@tonic-gate * dependencies were added, and if so move them to the previous 5747c478bd9Sstevel@tonic-gate * link-map control list. 5757c478bd9Sstevel@tonic-gate */ 57624a6229eSrie /* LINTED */ 577cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 57824a6229eSrie /* LINTED */ 579cce0e03bSab196087 plmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, plmco); 580cce0e03bSab196087 if ((nlmco != ALIST_OFF_DATA) && nlmc->lc_head) 5817c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 5828521e5e6Srie free(alp); 5837c478bd9Sstevel@tonic-gate } 5847c478bd9Sstevel@tonic-gate 58524a6229eSrie /* 58602ca3e02Srie * If relocations have been successful, indicate that relocations are 58702ca3e02Srie * no longer active for this control list. Otherwise, leave the 58802ca3e02Srie * relocation flag, as this flag is used to determine the style of 58902ca3e02Srie * cleanup (see remove_lmc()). 59024a6229eSrie */ 59102ca3e02Srie if (lret && pret) { 59224a6229eSrie /* LINTED */ 593cce0e03bSab196087 nlmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, nlmco); 5947c478bd9Sstevel@tonic-gate nlmc->lc_flags &= ~LMC_FLG_RELOCATING; 5957c478bd9Sstevel@tonic-gate 5967c478bd9Sstevel@tonic-gate return (1); 59702ca3e02Srie } 59802ca3e02Srie 5997c478bd9Sstevel@tonic-gate return (0); 6007c478bd9Sstevel@tonic-gate } 6017c478bd9Sstevel@tonic-gate 6027c478bd9Sstevel@tonic-gate /* 6037c478bd9Sstevel@tonic-gate * Inherit the first rejection message for possible later diagnostics. 6047c478bd9Sstevel@tonic-gate * 6057c478bd9Sstevel@tonic-gate * Any attempt to process a file that is unsuccessful, should be accompanied 6067c478bd9Sstevel@tonic-gate * with an error diagnostic. However, some operations like searching for a 6077c478bd9Sstevel@tonic-gate * simple filename, involve trying numerous paths, and an error message for each 6087c478bd9Sstevel@tonic-gate * lookup is not required. Although a multiple search can fail, it's possible 6097c478bd9Sstevel@tonic-gate * that a file was found, but was rejected because it was the wrong type. 6107c478bd9Sstevel@tonic-gate * To satisfy these possibilities, the first failure is recorded as a rejection 6117c478bd9Sstevel@tonic-gate * message, and this message is used later for a more specific diagnostic. 6127c478bd9Sstevel@tonic-gate * 6137c478bd9Sstevel@tonic-gate * File searches are focused at load_one(), and from here a rejection descriptor 6147c478bd9Sstevel@tonic-gate * is passed down to various child routines. If these child routines can 6157c478bd9Sstevel@tonic-gate * process multiple files, then they will maintain their own rejection desc- 6167c478bd9Sstevel@tonic-gate * riptor. This is filled in for any failures, and a diagnostic produced to 6177c478bd9Sstevel@tonic-gate * reflect the failure. The child routines then employ rejection_inherit() to 6187c478bd9Sstevel@tonic-gate * pass the first rejection message back to load_one(). 6197c478bd9Sstevel@tonic-gate * 6207c478bd9Sstevel@tonic-gate * Note that the name, and rejection string must be duplicated, as the name 6217c478bd9Sstevel@tonic-gate * buffer and error string buffer (see conv_ routines) may be reused for 6227c478bd9Sstevel@tonic-gate * additional processing or rejection messages. 6237c478bd9Sstevel@tonic-gate */ 6247c478bd9Sstevel@tonic-gate void 62531fdd7caSab196087 rejection_inherit(Rej_desc *rej1, Rej_desc *rej2) 6267c478bd9Sstevel@tonic-gate { 6277c478bd9Sstevel@tonic-gate if (rej2->rej_type && (rej1->rej_type == 0)) { 6287c478bd9Sstevel@tonic-gate rej1->rej_type = rej2->rej_type; 6297c478bd9Sstevel@tonic-gate rej1->rej_info = rej2->rej_info; 6307c478bd9Sstevel@tonic-gate rej1->rej_flag = rej2->rej_flag; 6317c478bd9Sstevel@tonic-gate if (rej2->rej_name) 6327c478bd9Sstevel@tonic-gate rej1->rej_name = strdup(rej2->rej_name); 6337c478bd9Sstevel@tonic-gate if (rej2->rej_str) { 6348521e5e6Srie if ((rej1->rej_str = strdup(rej2->rej_str)) == NULL) 6357c478bd9Sstevel@tonic-gate rej1->rej_str = MSG_ORIG(MSG_EMG_ENOMEM); 6367c478bd9Sstevel@tonic-gate } 6377c478bd9Sstevel@tonic-gate } 6387c478bd9Sstevel@tonic-gate } 6397c478bd9Sstevel@tonic-gate 6407c478bd9Sstevel@tonic-gate /* 6417c478bd9Sstevel@tonic-gate * Determine the object type of a file. 6427c478bd9Sstevel@tonic-gate */ 6437c478bd9Sstevel@tonic-gate Fct * 6447c478bd9Sstevel@tonic-gate are_u_this(Rej_desc *rej, int fd, struct stat *status, const char *name) 6457c478bd9Sstevel@tonic-gate { 6467c478bd9Sstevel@tonic-gate int i; 6477c478bd9Sstevel@tonic-gate char *maddr = 0; 6487c478bd9Sstevel@tonic-gate 6497c478bd9Sstevel@tonic-gate fmap->fm_fsize = status->st_size; 6507c478bd9Sstevel@tonic-gate 6517c478bd9Sstevel@tonic-gate /* 6527c478bd9Sstevel@tonic-gate * If this is a directory (which can't be mmap()'ed) generate a precise 6537c478bd9Sstevel@tonic-gate * error message. 6547c478bd9Sstevel@tonic-gate */ 6557c478bd9Sstevel@tonic-gate if ((status->st_mode & S_IFMT) == S_IFDIR) { 6567c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 6577c478bd9Sstevel@tonic-gate rej->rej_str = strerror(EISDIR); 6587c478bd9Sstevel@tonic-gate return (0); 6597c478bd9Sstevel@tonic-gate } 6607c478bd9Sstevel@tonic-gate 6617c478bd9Sstevel@tonic-gate /* 6627c478bd9Sstevel@tonic-gate * Map in the first page of the file. When this buffer is first used, 6637c478bd9Sstevel@tonic-gate * the mapping is a single system page. This is typically enough to 6647c478bd9Sstevel@tonic-gate * inspect the ehdr and phdrs of the file, and can be reused for each 6657c478bd9Sstevel@tonic-gate * file that get loaded. If a larger mapping is required to read the 6667c478bd9Sstevel@tonic-gate * ehdr and phdrs, a new mapping is created (see elf_map_it()). This 6677c478bd9Sstevel@tonic-gate * new mapping is again used for each new file loaded. Some objects, 6687c478bd9Sstevel@tonic-gate * such as filters, only take up one page, and in this case this mapping 6697c478bd9Sstevel@tonic-gate * will suffice for the file. 6707c478bd9Sstevel@tonic-gate */ 6717c478bd9Sstevel@tonic-gate maddr = mmap(fmap->fm_maddr, fmap->fm_msize, (PROT_READ | PROT_EXEC), 6727c478bd9Sstevel@tonic-gate fmap->fm_mflags, fd, 0); 6737c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 6747c478bd9Sstevel@tonic-gate if ((maddr == MAP_FAILED) && (errno == EINVAL)) { 6757c478bd9Sstevel@tonic-gate /* 6767c478bd9Sstevel@tonic-gate * If the mapping failed, and we used MAP_ALIGN, assume we're 6777c478bd9Sstevel@tonic-gate * on a system that doesn't support this option. Try again 6787c478bd9Sstevel@tonic-gate * without MAP_ALIGN. 6797c478bd9Sstevel@tonic-gate */ 6807c478bd9Sstevel@tonic-gate if (fmap->fm_mflags & MAP_ALIGN) { 6817c478bd9Sstevel@tonic-gate rtld_flags2 |= RT_FL2_NOMALIGN; 6827c478bd9Sstevel@tonic-gate fmap_setup(); 6837c478bd9Sstevel@tonic-gate 6847c478bd9Sstevel@tonic-gate maddr = (char *)mmap(fmap->fm_maddr, fmap->fm_msize, 6857c478bd9Sstevel@tonic-gate (PROT_READ | PROT_EXEC), fmap->fm_mflags, fd, 0); 6867c478bd9Sstevel@tonic-gate } 6877c478bd9Sstevel@tonic-gate } 6887c478bd9Sstevel@tonic-gate #endif 6897c478bd9Sstevel@tonic-gate if (maddr == MAP_FAILED) { 6907c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 6917c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 6927c478bd9Sstevel@tonic-gate return (0); 6937c478bd9Sstevel@tonic-gate } 6947c478bd9Sstevel@tonic-gate 6957c478bd9Sstevel@tonic-gate /* 6967c478bd9Sstevel@tonic-gate * From now on we will re-use fmap->fm_maddr as the mapping address 6977c478bd9Sstevel@tonic-gate * so we augment the flags with MAP_FIXED and drop any MAP_ALIGN. 6987c478bd9Sstevel@tonic-gate */ 6997c478bd9Sstevel@tonic-gate fmap->fm_maddr = maddr; 7007c478bd9Sstevel@tonic-gate fmap->fm_mflags |= MAP_FIXED; 7017c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 7027c478bd9Sstevel@tonic-gate fmap->fm_mflags &= ~MAP_ALIGN; 7037c478bd9Sstevel@tonic-gate #endif 7047c478bd9Sstevel@tonic-gate 7057c478bd9Sstevel@tonic-gate /* 7067c478bd9Sstevel@tonic-gate * Search through the object vectors to determine what kind of 7077c478bd9Sstevel@tonic-gate * object we have. 7087c478bd9Sstevel@tonic-gate */ 7097c478bd9Sstevel@tonic-gate for (i = 0; vector[i]; i++) { 7107c478bd9Sstevel@tonic-gate if ((vector[i]->fct_are_u_this)(rej)) 7117c478bd9Sstevel@tonic-gate return (vector[i]); 7127c478bd9Sstevel@tonic-gate else if (rej->rej_type) { 7137c478bd9Sstevel@tonic-gate Rt_map *lmp; 7147c478bd9Sstevel@tonic-gate 7157c478bd9Sstevel@tonic-gate /* 7167c478bd9Sstevel@tonic-gate * If this object is an explicitly defined shared 7177c478bd9Sstevel@tonic-gate * object under inspection by ldd, and contains a 7187c478bd9Sstevel@tonic-gate * incompatible hardware capabilities requirement, then 7197c478bd9Sstevel@tonic-gate * inform the user, but continue processing. 7207c478bd9Sstevel@tonic-gate * 7217c478bd9Sstevel@tonic-gate * XXXX - ldd -v for any rej failure. 7227c478bd9Sstevel@tonic-gate */ 7237c478bd9Sstevel@tonic-gate if ((rej->rej_type == SGS_REJ_HWCAP_1) && 7247c478bd9Sstevel@tonic-gate (lml_main.lm_flags & LML_FLG_TRC_LDDSTUB) && 7257c478bd9Sstevel@tonic-gate ((lmp = lml_main.lm_head) != 0) && 7267c478bd9Sstevel@tonic-gate (FLAGS1(lmp) & FL1_RT_LDDSTUB) && 7277c478bd9Sstevel@tonic-gate (NEXT(lmp) == 0)) { 7287c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_GEN_HWCAP_1), 7297c478bd9Sstevel@tonic-gate name, rej->rej_str); 7307c478bd9Sstevel@tonic-gate return (vector[i]); 7317c478bd9Sstevel@tonic-gate } 7327c478bd9Sstevel@tonic-gate return (0); 7337c478bd9Sstevel@tonic-gate } 7347c478bd9Sstevel@tonic-gate } 7357c478bd9Sstevel@tonic-gate 7367c478bd9Sstevel@tonic-gate /* 7377c478bd9Sstevel@tonic-gate * Unknown file type. 7387c478bd9Sstevel@tonic-gate */ 7397c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_UNKFILE; 7407c478bd9Sstevel@tonic-gate return (0); 7417c478bd9Sstevel@tonic-gate } 7427c478bd9Sstevel@tonic-gate 7437c478bd9Sstevel@tonic-gate /* 7440aa3cd4dSrie * Helper routine for is_so_matched() that consolidates matching a path name, 7450aa3cd4dSrie * or file name component of a link-map name. 7467c478bd9Sstevel@tonic-gate */ 7477c478bd9Sstevel@tonic-gate static int 7480aa3cd4dSrie _is_so_matched(const char *name, const char *str, int path) 7497c478bd9Sstevel@tonic-gate { 7507c478bd9Sstevel@tonic-gate const char *_str; 7517c478bd9Sstevel@tonic-gate 7520aa3cd4dSrie if ((path == 0) && ((_str = strrchr(str, '/')) != NULL)) 7537c478bd9Sstevel@tonic-gate _str++; 7547c478bd9Sstevel@tonic-gate else 7557c478bd9Sstevel@tonic-gate _str = str; 7567c478bd9Sstevel@tonic-gate 7577c478bd9Sstevel@tonic-gate return (strcmp(name, _str)); 7587c478bd9Sstevel@tonic-gate } 7597c478bd9Sstevel@tonic-gate 7600aa3cd4dSrie /* 7610aa3cd4dSrie * Determine whether a search name matches one of the names associated with a 7620aa3cd4dSrie * link-map. A link-map contains several names: 7630aa3cd4dSrie * 7640aa3cd4dSrie * . a NAME() - typically the full pathname of an object that has been 7650aa3cd4dSrie * loaded. For example, when looking for the dependency "libc.so.1", a 7660aa3cd4dSrie * search path is applied, with the eventual NAME() being "/lib/ld.so.1". 7670aa3cd4dSrie * The name of the executable is typically a simple filename, such as 7680aa3cd4dSrie * "main", as this is the name passed to exec() to start the process. 7690aa3cd4dSrie * 7700aa3cd4dSrie * . a PATHNAME() - this is maintained if the resolved NAME() is different 7710aa3cd4dSrie * to NAME(), ie. the original name is a symbolic link. This is also 7720aa3cd4dSrie * the resolved full pathname for a dynamic executable. 7730aa3cd4dSrie * 7740aa3cd4dSrie * . a list of ALIAS() names - these are alternative names by which the 7750aa3cd4dSrie * object has been found, ie. when dependencies are loaded through a 7760aa3cd4dSrie * variety of different symbolic links. 7770aa3cd4dSrie * 7780aa3cd4dSrie * The name pattern matching can differ depending on whether we are looking 7790aa3cd4dSrie * for a full path name (path != 0), or a simple file name (path == 0). Full 7800aa3cd4dSrie * path names typically match NAME() or PATHNAME() entries, so these link-map 7810aa3cd4dSrie * names are inspected first when a full path name is being searched for. 7820aa3cd4dSrie * Simple file names typically match ALIAS() names, so these link-map names are 7830aa3cd4dSrie * inspected first when a simple file name is being searched for. 7840aa3cd4dSrie * 7850aa3cd4dSrie * For all full path name searches, the link-map names are taken as is. For 7860aa3cd4dSrie * simple file name searches, only the file name component of any link-map 7870aa3cd4dSrie * names are used for comparison. 7880aa3cd4dSrie */ 7897c478bd9Sstevel@tonic-gate static Rt_map * 7900aa3cd4dSrie is_so_matched(Rt_map *lmp, const char *name, int path) 7917c478bd9Sstevel@tonic-gate { 792cce0e03bSab196087 Aliste idx; 793cce0e03bSab196087 const char *cp; 7947c478bd9Sstevel@tonic-gate 7957c478bd9Sstevel@tonic-gate /* 7960aa3cd4dSrie * A pathname is typically going to match a NAME() or PATHNAME(), so 7970aa3cd4dSrie * check these first. 7987c478bd9Sstevel@tonic-gate */ 7990aa3cd4dSrie if (path) { 8000aa3cd4dSrie if (strcmp(name, NAME(lmp)) == 0) 8017c478bd9Sstevel@tonic-gate return (lmp); 8027c478bd9Sstevel@tonic-gate 8037c478bd9Sstevel@tonic-gate if (PATHNAME(lmp) != NAME(lmp)) { 8040aa3cd4dSrie if (strcmp(name, PATHNAME(lmp)) == 0) 8057c478bd9Sstevel@tonic-gate return (lmp); 8067c478bd9Sstevel@tonic-gate } 8070aa3cd4dSrie } 8080aa3cd4dSrie 8090aa3cd4dSrie /* 8100aa3cd4dSrie * Typically, dependencies are specified as simple file names 8110aa3cd4dSrie * (DT_NEEDED == libc.so.1), which are expanded to full pathnames to 8120aa3cd4dSrie * open the file. The full pathname is NAME(), and the original name 8130aa3cd4dSrie * is maintained on the ALIAS() list. 8140aa3cd4dSrie * 8150aa3cd4dSrie * If this is a simple filename, or a pathname has failed to match the 8160aa3cd4dSrie * NAME() and PATHNAME() check above, look through the ALIAS() list. 8170aa3cd4dSrie */ 818cce0e03bSab196087 for (APLIST_TRAVERSE(ALIAS(lmp), idx, cp)) { 8190aa3cd4dSrie /* 8200aa3cd4dSrie * If we're looking for a simple filename, _is_so_matched() 8210aa3cd4dSrie * will reduce the ALIAS name to its simple name. 8220aa3cd4dSrie */ 823cce0e03bSab196087 if (_is_so_matched(name, cp, path) == 0) 8240aa3cd4dSrie return (lmp); 8250aa3cd4dSrie } 8260aa3cd4dSrie 8270aa3cd4dSrie /* 8280aa3cd4dSrie * Finally, if this is a simple file name, and any ALIAS() search has 8290aa3cd4dSrie * been completed, match the simple file name of NAME() and PATHNAME(). 8300aa3cd4dSrie */ 8310aa3cd4dSrie if (path == 0) { 8320aa3cd4dSrie if (_is_so_matched(name, NAME(lmp), 0) == 0) 8330aa3cd4dSrie return (lmp); 8340aa3cd4dSrie 8350aa3cd4dSrie if (PATHNAME(lmp) != NAME(lmp)) { 8360aa3cd4dSrie if (_is_so_matched(name, PATHNAME(lmp), 0) == 0) 8370aa3cd4dSrie return (lmp); 8380aa3cd4dSrie } 8390aa3cd4dSrie } 8400aa3cd4dSrie 8417c478bd9Sstevel@tonic-gate return (0); 8427c478bd9Sstevel@tonic-gate } 8437c478bd9Sstevel@tonic-gate 8440aa3cd4dSrie /* 8450aa3cd4dSrie * Files are opened by ld.so.1 to satisfy dependencies, filtees and dlopen() 8460aa3cd4dSrie * requests. Each request investigates the file based upon the callers 8479aa23310Srie * environment. Once a full path name has been established, the following 8489aa23310Srie * checks are made: 8490aa3cd4dSrie * 8509aa23310Srie * . does the path exist in the link-map lists FullPathNode AVL tree? if 8519aa23310Srie * so, the file is already loaded, and its associated link-map pointer 8529aa23310Srie * is returned. 8539aa23310Srie * . does the path exist in the not-found AVL tree? if so, this path has 8549aa23310Srie * already been determined to not exist, and a failure is returned. 8559aa23310Srie * . a device/inode check, to ensure the same file isn't mapped multiple 8569aa23310Srie * times through different paths. See file_open(). 8579aa23310Srie * 8589aa23310Srie * However, there are cases where a test for an existing file name needs to be 8599aa23310Srie * carried out, such as dlopen(NOLOAD) requests, dldump() requests, and as a 8609aa23310Srie * final fallback to dependency loading. These requests are handled by 8619aa23310Srie * is_so_loaded(). 8620aa3cd4dSrie * 8630aa3cd4dSrie * A traversal through the callers link-map list is carried out, and from each 8640aa3cd4dSrie * link-map, a comparison is made against all of the various names by which the 8659aa23310Srie * object has been referenced. is_so_matched() is used to compares the link-map 8669aa23310Srie * names against the name being searched for. Whether the search name is a full 8679aa23310Srie * path name or a simple file name, governs what comparisons are made. 8680aa3cd4dSrie * 8690aa3cd4dSrie * A full path name, which is a fully resolved path name that starts with a "/" 8700aa3cd4dSrie * character, or a relative path name that includes a "/" character, must match 8710aa3cd4dSrie * the link-map names explicitly. A simple file name, which is any name *not* 8720aa3cd4dSrie * containing a "/" character, are matched against the file name component of 8730aa3cd4dSrie * any link-map names. 8740aa3cd4dSrie */ 8757c478bd9Sstevel@tonic-gate Rt_map * 8769aa23310Srie is_so_loaded(Lm_list *lml, const char *name, int *in_nfavl) 8777c478bd9Sstevel@tonic-gate { 8787c478bd9Sstevel@tonic-gate Rt_map *lmp; 8797c478bd9Sstevel@tonic-gate avl_index_t where; 8807c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 881cce0e03bSab196087 Aliste idx; 8820aa3cd4dSrie int path = 0; 8837c478bd9Sstevel@tonic-gate 8847c478bd9Sstevel@tonic-gate /* 8850aa3cd4dSrie * If the name is a full path name, first determine if the path name is 8869aa23310Srie * registered on the FullPathNode AVL, or not-found AVL trees. 8877c478bd9Sstevel@tonic-gate */ 8889aa23310Srie if (name[0] == '/') { 8899aa23310Srie if (((lmp = fpavl_recorded(lml, name, &where)) != NULL) && 8907c478bd9Sstevel@tonic-gate ((FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) == 0)) 8917c478bd9Sstevel@tonic-gate return (lmp); 8929aa23310Srie if (nfavl_recorded(name, 0)) { 8939aa23310Srie /* 8949aa23310Srie * For dlopen() and dlsym() fall backs, indicate that 8959aa23310Srie * a registered not-found path has indicated that this 8969aa23310Srie * object does not exist. 8979aa23310Srie */ 8989aa23310Srie if (in_nfavl) 8999aa23310Srie (*in_nfavl)++; 9009aa23310Srie return (0); 9019aa23310Srie } 9029aa23310Srie } 9037c478bd9Sstevel@tonic-gate 9047c478bd9Sstevel@tonic-gate /* 9050aa3cd4dSrie * Determine whether the name is a simple file name, or a path name. 9067c478bd9Sstevel@tonic-gate */ 9070aa3cd4dSrie if (strchr(name, '/')) 9080aa3cd4dSrie path++; 9097c478bd9Sstevel@tonic-gate 9107c478bd9Sstevel@tonic-gate /* 9117c478bd9Sstevel@tonic-gate * Loop through the callers link-map lists. 9127c478bd9Sstevel@tonic-gate */ 913cce0e03bSab196087 for (ALIST_TRAVERSE(lml->lm_lists, idx, lmc)) { 9147c478bd9Sstevel@tonic-gate for (lmp = lmc->lc_head; lmp; lmp = (Rt_map *)NEXT(lmp)) { 9157c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & (FLG_RT_OBJECT | FLG_RT_DELETE)) 9167c478bd9Sstevel@tonic-gate continue; 9177c478bd9Sstevel@tonic-gate 9180aa3cd4dSrie if (is_so_matched(lmp, name, path)) 9197c478bd9Sstevel@tonic-gate return (lmp); 9207c478bd9Sstevel@tonic-gate } 9217c478bd9Sstevel@tonic-gate } 9227c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 9237c478bd9Sstevel@tonic-gate } 9247c478bd9Sstevel@tonic-gate 9257c478bd9Sstevel@tonic-gate /* 9267c478bd9Sstevel@tonic-gate * Tracing is enabled by the LD_TRACE_LOADED_OPTIONS environment variable which 9277c478bd9Sstevel@tonic-gate * is normally set from ldd(1). For each link map we load, print the load name 9287c478bd9Sstevel@tonic-gate * and the full pathname of the shared object. 9297c478bd9Sstevel@tonic-gate */ 9307c478bd9Sstevel@tonic-gate /* ARGSUSED4 */ 9317c478bd9Sstevel@tonic-gate static void 9327c478bd9Sstevel@tonic-gate trace_so(Rt_map *clmp, Rej_desc *rej, const char *name, const char *path, 9337c478bd9Sstevel@tonic-gate int alter, const char *nfound) 9347c478bd9Sstevel@tonic-gate { 9357c478bd9Sstevel@tonic-gate const char *str = MSG_ORIG(MSG_STR_EMPTY); 9367c478bd9Sstevel@tonic-gate const char *reject = MSG_ORIG(MSG_STR_EMPTY); 9377c478bd9Sstevel@tonic-gate char _reject[PATH_MAX]; 9387c478bd9Sstevel@tonic-gate 9397c478bd9Sstevel@tonic-gate /* 9407c478bd9Sstevel@tonic-gate * The first time through trace_so() will only have lddstub on the 9417c478bd9Sstevel@tonic-gate * link-map list and the preloaded shared object is supplied as "path". 9427c478bd9Sstevel@tonic-gate * As we don't want to print this shared object as a dependency, but 9437c478bd9Sstevel@tonic-gate * instead inspect *its* dependencies, return. 9447c478bd9Sstevel@tonic-gate */ 9457c478bd9Sstevel@tonic-gate if (FLAGS1(clmp) & FL1_RT_LDDSTUB) 9467c478bd9Sstevel@tonic-gate return; 9477c478bd9Sstevel@tonic-gate 9487c478bd9Sstevel@tonic-gate /* 9497c478bd9Sstevel@tonic-gate * Without any rejection info, this is a supplied not-found condition. 9507c478bd9Sstevel@tonic-gate */ 9517c478bd9Sstevel@tonic-gate if (rej && (rej->rej_type == 0)) { 9527c478bd9Sstevel@tonic-gate (void) printf(nfound, name); 9537c478bd9Sstevel@tonic-gate return; 9547c478bd9Sstevel@tonic-gate } 9557c478bd9Sstevel@tonic-gate 9567c478bd9Sstevel@tonic-gate /* 9577c478bd9Sstevel@tonic-gate * If rejection information exists then establish what object was 9587c478bd9Sstevel@tonic-gate * found and the reason for its rejection. 9597c478bd9Sstevel@tonic-gate */ 9607c478bd9Sstevel@tonic-gate if (rej) { 961de777a60Sab196087 Conv_reject_desc_buf_t rej_buf; 962de777a60Sab196087 9637c478bd9Sstevel@tonic-gate /* LINTED */ 9647c478bd9Sstevel@tonic-gate (void) snprintf(_reject, PATH_MAX, 965de777a60Sab196087 MSG_INTL(ldd_reject[rej->rej_type]), 966ba2be530Sab196087 conv_reject_desc(rej, &rej_buf, M_MACH)); 9677c478bd9Sstevel@tonic-gate if (rej->rej_name) 9687c478bd9Sstevel@tonic-gate path = rej->rej_name; 9697c478bd9Sstevel@tonic-gate reject = (char *)_reject; 9707c478bd9Sstevel@tonic-gate 9717c478bd9Sstevel@tonic-gate /* 9727c478bd9Sstevel@tonic-gate * Was an alternative pathname defined (from a configuration 9737c478bd9Sstevel@tonic-gate * file). 9747c478bd9Sstevel@tonic-gate */ 9757c478bd9Sstevel@tonic-gate if (rej->rej_flag & FLG_FD_ALTER) 9767c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 9777c478bd9Sstevel@tonic-gate } else { 9787c478bd9Sstevel@tonic-gate if (alter) 9797c478bd9Sstevel@tonic-gate str = MSG_INTL(MSG_LDD_FIL_ALTER); 9807c478bd9Sstevel@tonic-gate } 9817c478bd9Sstevel@tonic-gate 9827c478bd9Sstevel@tonic-gate /* 9837c478bd9Sstevel@tonic-gate * If the load name isn't a full pathname print its associated pathname 9847c478bd9Sstevel@tonic-gate * together with all the other information we've gathered. 9857c478bd9Sstevel@tonic-gate */ 9867c478bd9Sstevel@tonic-gate if (*name == '/') 9877c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), path, str, reject); 9887c478bd9Sstevel@tonic-gate else 9897247f888Srie (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), name, path, str, 9907247f888Srie reject); 9917c478bd9Sstevel@tonic-gate } 9927c478bd9Sstevel@tonic-gate 9937c478bd9Sstevel@tonic-gate 9947c478bd9Sstevel@tonic-gate /* 9957c478bd9Sstevel@tonic-gate * Establish a link-map mode, initializing it if it has just been loaded, or 9967c478bd9Sstevel@tonic-gate * potentially updating it if it already exists. 9977c478bd9Sstevel@tonic-gate */ 9987c478bd9Sstevel@tonic-gate int 9997c478bd9Sstevel@tonic-gate update_mode(Rt_map *lmp, int omode, int nmode) 10007c478bd9Sstevel@tonic-gate { 1001dffec89cSrie Lm_list *lml = LIST(lmp); 10027c478bd9Sstevel@tonic-gate int pmode = 0; 10037c478bd9Sstevel@tonic-gate 10047c478bd9Sstevel@tonic-gate /* 10057c478bd9Sstevel@tonic-gate * A newly loaded object hasn't had its mode set yet. Modes are used to 10067c478bd9Sstevel@tonic-gate * load dependencies, so don't propagate any parent or no-load flags, as 10077c478bd9Sstevel@tonic-gate * these would adversely affect this objects ability to load any of its 10087c478bd9Sstevel@tonic-gate * dependencies that aren't already loaded. RTLD_FIRST is applicable to 10097c478bd9Sstevel@tonic-gate * this objects handle creation only, and should not be propagated. 10107c478bd9Sstevel@tonic-gate */ 10117c478bd9Sstevel@tonic-gate if ((FLAGS(lmp) & FLG_RT_MODESET) == 0) { 10127c478bd9Sstevel@tonic-gate MODE(lmp) |= nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST); 10137c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_MODESET; 10147c478bd9Sstevel@tonic-gate return (1); 10157c478bd9Sstevel@tonic-gate } 10167c478bd9Sstevel@tonic-gate 10177c478bd9Sstevel@tonic-gate /* 10187c478bd9Sstevel@tonic-gate * Establish any new overriding modes. RTLD_LAZY and RTLD_NOW should be 10197c478bd9Sstevel@tonic-gate * represented individually (this is historic, as these two flags were 10207c478bd9Sstevel@tonic-gate * the only flags originally available to dlopen()). Other flags are 10217c478bd9Sstevel@tonic-gate * accumulative, but have a hierarchy of preference. 10227c478bd9Sstevel@tonic-gate */ 10237c478bd9Sstevel@tonic-gate if ((omode & RTLD_LAZY) && (nmode & RTLD_NOW)) { 10247c478bd9Sstevel@tonic-gate MODE(lmp) &= ~RTLD_LAZY; 10257c478bd9Sstevel@tonic-gate pmode |= RTLD_NOW; 10267c478bd9Sstevel@tonic-gate } 10277c478bd9Sstevel@tonic-gate 10287c478bd9Sstevel@tonic-gate pmode |= ((~omode & nmode) & 10297c478bd9Sstevel@tonic-gate (RTLD_GLOBAL | RTLD_WORLD | RTLD_NODELETE)); 10307c478bd9Sstevel@tonic-gate if (pmode) { 10315aefb655Srie DBG_CALL(Dbg_file_mode_promote(lmp, pmode)); 10327c478bd9Sstevel@tonic-gate MODE(lmp) |= pmode; 10337c478bd9Sstevel@tonic-gate } 10347c478bd9Sstevel@tonic-gate 10357c478bd9Sstevel@tonic-gate /* 10367c478bd9Sstevel@tonic-gate * If this load is an RTLD_NOW request and the object has already been 10377c478bd9Sstevel@tonic-gate * loaded non-RTLD_NOW, append this object to the relocation-now list 10387c478bd9Sstevel@tonic-gate * of the objects associated control list. Note, if the object hasn't 10397c478bd9Sstevel@tonic-gate * yet been relocated, setting its MODE() to RTLD_NOW will establish 10407c478bd9Sstevel@tonic-gate * full relocation processing when it eventually gets relocated. 10417c478bd9Sstevel@tonic-gate */ 10427c478bd9Sstevel@tonic-gate if ((pmode & RTLD_NOW) && 10437c478bd9Sstevel@tonic-gate (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))) { 10447c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 10457c478bd9Sstevel@tonic-gate 10467c478bd9Sstevel@tonic-gate /* LINTED */ 1047cce0e03bSab196087 lmc = (Lm_cntl *)alist_item_by_offset(LIST(lmp)->lm_lists, 1048cce0e03bSab196087 CNTL(lmp)); 1049cce0e03bSab196087 (void) aplist_append(&lmc->lc_now, lmp, AL_CNT_LMNOW); 10507c478bd9Sstevel@tonic-gate } 10517c478bd9Sstevel@tonic-gate 10527c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 10537c478bd9Sstevel@tonic-gate /* 10547c478bd9Sstevel@tonic-gate * For patch backward compatibility the following .init collection 10557c478bd9Sstevel@tonic-gate * is disabled. 10567c478bd9Sstevel@tonic-gate */ 10577c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 10587c478bd9Sstevel@tonic-gate return (pmode); 10597c478bd9Sstevel@tonic-gate #endif 10607c478bd9Sstevel@tonic-gate 10617c478bd9Sstevel@tonic-gate /* 1062dffec89cSrie * If this objects .init has been collected but has not yet been called, 1063dffec89cSrie * it may be necessary to reevaluate the object using tsort(). For 10647c478bd9Sstevel@tonic-gate * example, a new dlopen() hierarchy may bind to uninitialized objects 10657c478bd9Sstevel@tonic-gate * that are already loaded, or a dlopen(RTLD_NOW) can establish new 10667c478bd9Sstevel@tonic-gate * bindings between already loaded objects that require the tsort() 1067dffec89cSrie * information be recomputed. If however, no new objects have been 1068dffec89cSrie * added to the process, and this object hasn't been promoted, don't 1069dffec89cSrie * bother reevaluating the .init. The present tsort() information is 1070dffec89cSrie * probably as accurate as necessary, and by not establishing a parallel 1071dffec89cSrie * tsort() we can help reduce the amount of recursion possible between 1072dffec89cSrie * .inits. 10737c478bd9Sstevel@tonic-gate */ 1074dffec89cSrie if (((FLAGS(lmp) & 1075dffec89cSrie (FLG_RT_INITCLCT | FLG_RT_INITCALL)) == FLG_RT_INITCLCT) && 1076dffec89cSrie ((lml->lm_flags & LML_FLG_OBJADDED) || ((pmode & RTLD_NOW) && 1077dffec89cSrie (FLAGS(lmp) & (FLG_RT_RELOCED | FLG_RT_RELOCING))))) { 10787c478bd9Sstevel@tonic-gate FLAGS(lmp) &= ~FLG_RT_INITCLCT; 10797c478bd9Sstevel@tonic-gate LIST(lmp)->lm_init++; 1080dffec89cSrie LIST(lmp)->lm_flags |= LML_FLG_OBJREEVAL; 10817c478bd9Sstevel@tonic-gate } 10827c478bd9Sstevel@tonic-gate 10837c478bd9Sstevel@tonic-gate return (pmode); 10847c478bd9Sstevel@tonic-gate } 10857c478bd9Sstevel@tonic-gate 10867c478bd9Sstevel@tonic-gate /* 10877c478bd9Sstevel@tonic-gate * Determine whether an alias name already exists, and if not create one. This 10887c478bd9Sstevel@tonic-gate * is typically used to retain dependency names, such as "libc.so.1", which 10897c478bd9Sstevel@tonic-gate * would have been expanded to full path names when they were loaded. The 10907c478bd9Sstevel@tonic-gate * full path names (NAME() and possibly PATHNAME()) are maintained as Fullpath 10917c478bd9Sstevel@tonic-gate * AVL nodes, and thus would have been matched by fpavl_loaded() during 10927c478bd9Sstevel@tonic-gate * file_open(). 10937c478bd9Sstevel@tonic-gate */ 10947c478bd9Sstevel@tonic-gate int 10957c478bd9Sstevel@tonic-gate append_alias(Rt_map *lmp, const char *str, int *added) 10967c478bd9Sstevel@tonic-gate { 1097cce0e03bSab196087 Aliste idx; 1098cce0e03bSab196087 char *cp; 10997c478bd9Sstevel@tonic-gate 11007c478bd9Sstevel@tonic-gate /* 11017c478bd9Sstevel@tonic-gate * Determine if this filename is already on the alias list. 11027c478bd9Sstevel@tonic-gate */ 1103cce0e03bSab196087 for (APLIST_TRAVERSE(ALIAS(lmp), idx, cp)) { 1104cce0e03bSab196087 if (strcmp(cp, str) == 0) 11057c478bd9Sstevel@tonic-gate return (1); 11067c478bd9Sstevel@tonic-gate } 11077c478bd9Sstevel@tonic-gate 11087c478bd9Sstevel@tonic-gate /* 11097c478bd9Sstevel@tonic-gate * This is a new alias, append it to the alias list. 11107c478bd9Sstevel@tonic-gate */ 11118521e5e6Srie if ((cp = strdup(str)) == NULL) 11127c478bd9Sstevel@tonic-gate return (0); 11137c478bd9Sstevel@tonic-gate 1114cce0e03bSab196087 if (aplist_append(&ALIAS(lmp), cp, AL_CNT_ALIAS) == NULL) { 11157c478bd9Sstevel@tonic-gate free(cp); 11167c478bd9Sstevel@tonic-gate return (0); 11177c478bd9Sstevel@tonic-gate } 11187c478bd9Sstevel@tonic-gate if (added) 11197c478bd9Sstevel@tonic-gate *added = 1; 11207c478bd9Sstevel@tonic-gate return (1); 11217c478bd9Sstevel@tonic-gate } 11227c478bd9Sstevel@tonic-gate 11237c478bd9Sstevel@tonic-gate /* 11247c478bd9Sstevel@tonic-gate * Determine whether a file is already loaded by comparing device and inode 11257c478bd9Sstevel@tonic-gate * values. 11267c478bd9Sstevel@tonic-gate */ 11277c478bd9Sstevel@tonic-gate static Rt_map * 11287c478bd9Sstevel@tonic-gate is_devinode_loaded(struct stat *status, Lm_list *lml, const char *name, 11297c478bd9Sstevel@tonic-gate uint_t flags) 11307c478bd9Sstevel@tonic-gate { 11317c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 1132cce0e03bSab196087 Aliste idx; 11337c478bd9Sstevel@tonic-gate 11347c478bd9Sstevel@tonic-gate /* 11357c478bd9Sstevel@tonic-gate * If this is an auditor, it will have been opened on a new link-map. 11368af2c5b9Srie * To prevent multiple occurrences of the same auditor on multiple 11377c478bd9Sstevel@tonic-gate * link-maps, search the head of each link-map list and see if this 11387c478bd9Sstevel@tonic-gate * object is already loaded as an auditor. 11397c478bd9Sstevel@tonic-gate */ 11407c478bd9Sstevel@tonic-gate if (flags & FLG_RT_AUDIT) { 11417c478bd9Sstevel@tonic-gate Lm_list *lml; 11427c478bd9Sstevel@tonic-gate Listnode *lnp; 11437c478bd9Sstevel@tonic-gate 11447c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(&dynlm_list, lnp, lml)) { 11457c478bd9Sstevel@tonic-gate Rt_map *nlmp = lml->lm_head; 11467c478bd9Sstevel@tonic-gate 11477c478bd9Sstevel@tonic-gate if (nlmp && ((FLAGS(nlmp) & 11487c478bd9Sstevel@tonic-gate (FLG_RT_AUDIT | FLG_RT_DELETE)) == FLG_RT_AUDIT) && 11497c478bd9Sstevel@tonic-gate (STDEV(nlmp) == status->st_dev) && 11507c478bd9Sstevel@tonic-gate (STINO(nlmp) == status->st_ino)) 11517c478bd9Sstevel@tonic-gate return (nlmp); 11527c478bd9Sstevel@tonic-gate } 11537c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 11547c478bd9Sstevel@tonic-gate } 11557c478bd9Sstevel@tonic-gate 11567c478bd9Sstevel@tonic-gate /* 11577c478bd9Sstevel@tonic-gate * If the file has been found determine from the new files status 11587c478bd9Sstevel@tonic-gate * information if this file is actually linked to one we already have 11597c478bd9Sstevel@tonic-gate * mapped. This catches symlink names not caught by is_so_loaded(). 11607c478bd9Sstevel@tonic-gate */ 1161cce0e03bSab196087 for (ALIST_TRAVERSE(lml->lm_lists, idx, lmc)) { 11627c478bd9Sstevel@tonic-gate Rt_map *nlmp; 11637c478bd9Sstevel@tonic-gate 11647c478bd9Sstevel@tonic-gate for (nlmp = lmc->lc_head; nlmp; nlmp = (Rt_map *)NEXT(nlmp)) { 11657c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_DELETE) || 11667c478bd9Sstevel@tonic-gate (FLAGS1(nlmp) & FL1_RT_LDDSTUB)) 11677c478bd9Sstevel@tonic-gate continue; 11687c478bd9Sstevel@tonic-gate 11697c478bd9Sstevel@tonic-gate if ((STDEV(nlmp) != status->st_dev) || 11707c478bd9Sstevel@tonic-gate (STINO(nlmp) != status->st_ino)) 11717c478bd9Sstevel@tonic-gate continue; 11727c478bd9Sstevel@tonic-gate 11737c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_VERBOSE) { 11747247f888Srie /* BEGIN CSTYLED */ 11757c478bd9Sstevel@tonic-gate if (*name == '/') 11767c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 11777c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 11787c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 11797c478bd9Sstevel@tonic-gate else 11807c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 11817c478bd9Sstevel@tonic-gate name, NAME(nlmp), 11827c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 11837c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 11847247f888Srie /* END CSTYLED */ 11857c478bd9Sstevel@tonic-gate } 11867c478bd9Sstevel@tonic-gate return (nlmp); 11877c478bd9Sstevel@tonic-gate } 11887c478bd9Sstevel@tonic-gate } 11897c478bd9Sstevel@tonic-gate return ((Rt_map *)0); 11907c478bd9Sstevel@tonic-gate } 11917c478bd9Sstevel@tonic-gate 11927c478bd9Sstevel@tonic-gate /* 11937c478bd9Sstevel@tonic-gate * Generate any error messages indicating a file could not be found. When 11947c478bd9Sstevel@tonic-gate * preloading or auditing a secure application, it can be a little more helpful 11957c478bd9Sstevel@tonic-gate * to indicate that a search of secure directories has failed, so adjust the 11967c478bd9Sstevel@tonic-gate * messages accordingly. 11977c478bd9Sstevel@tonic-gate */ 11987c478bd9Sstevel@tonic-gate void 11997c478bd9Sstevel@tonic-gate file_notfound(Lm_list *lml, const char *name, Rt_map *clmp, uint_t flags, 12007c478bd9Sstevel@tonic-gate Rej_desc * rej) 12017c478bd9Sstevel@tonic-gate { 12027c478bd9Sstevel@tonic-gate int secure = 0; 12037c478bd9Sstevel@tonic-gate 12047c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SECURE) && 12057c478bd9Sstevel@tonic-gate (flags & (FLG_RT_PRELOAD | FLG_RT_AUDIT))) 12067c478bd9Sstevel@tonic-gate secure++; 12077c478bd9Sstevel@tonic-gate 12087c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 12097c478bd9Sstevel@tonic-gate /* 12107c478bd9Sstevel@tonic-gate * Under ldd(1), auxiliary filtees that can't be loaded are 12117c478bd9Sstevel@tonic-gate * ignored, unless verbose errors are requested. 12127c478bd9Sstevel@tonic-gate */ 12137c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SILENCERR) && 12147c478bd9Sstevel@tonic-gate ((lml->lm_flags & LML_FLG_TRC_VERBOSE) == 0)) 12157c478bd9Sstevel@tonic-gate return; 12167c478bd9Sstevel@tonic-gate 12177c478bd9Sstevel@tonic-gate if (secure) 12187c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 12197c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_SEC_NFOUND)); 12207c478bd9Sstevel@tonic-gate else 12217c478bd9Sstevel@tonic-gate trace_so(clmp, rej, name, 0, 0, 12227c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_NFOUND)); 12237c478bd9Sstevel@tonic-gate return; 12247c478bd9Sstevel@tonic-gate } 12257c478bd9Sstevel@tonic-gate 12267c478bd9Sstevel@tonic-gate if (rej->rej_type) { 1227de777a60Sab196087 Conv_reject_desc_buf_t rej_buf; 1228de777a60Sab196087 12295aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(err_reject[rej->rej_type]), 12307c478bd9Sstevel@tonic-gate rej->rej_name ? rej->rej_name : MSG_INTL(MSG_STR_UNKNOWN), 1231ba2be530Sab196087 conv_reject_desc(rej, &rej_buf, M_MACH)); 12327c478bd9Sstevel@tonic-gate return; 12337c478bd9Sstevel@tonic-gate } 12347c478bd9Sstevel@tonic-gate 12357c478bd9Sstevel@tonic-gate if (secure) 12365aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SEC_OPEN), name); 12377c478bd9Sstevel@tonic-gate else 12385aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), name, 12397c478bd9Sstevel@tonic-gate strerror(ENOENT)); 12407c478bd9Sstevel@tonic-gate } 12417c478bd9Sstevel@tonic-gate 12427c478bd9Sstevel@tonic-gate static int 12437c478bd9Sstevel@tonic-gate file_open(int err, Lm_list *lml, const char *oname, const char *nname, 12449aa23310Srie Rt_map *clmp, uint_t flags, Fdesc *fdesc, Rej_desc *rej, int *in_nfavl) 12457c478bd9Sstevel@tonic-gate { 12467c478bd9Sstevel@tonic-gate struct stat status; 12477c478bd9Sstevel@tonic-gate Rt_map *nlmp; 12488521e5e6Srie int resolved = 0; 12499aa23310Srie char *name; 12509aa23310Srie avl_index_t nfavlwhere = 0; 12517c478bd9Sstevel@tonic-gate 12527c478bd9Sstevel@tonic-gate fdesc->fd_oname = oname; 12537c478bd9Sstevel@tonic-gate 12547c478bd9Sstevel@tonic-gate if ((err == 0) && (fdesc->fd_flags & FLG_FD_ALTER)) 12555aefb655Srie DBG_CALL(Dbg_file_config_obj(lml, oname, 0, nname)); 12567c478bd9Sstevel@tonic-gate 12577c478bd9Sstevel@tonic-gate /* 12587c478bd9Sstevel@tonic-gate * If we're dealing with a full pathname, determine whether this 12597c478bd9Sstevel@tonic-gate * pathname is already known. Other pathnames fall through to the 12607c478bd9Sstevel@tonic-gate * dev/inode check, as even though the pathname may look the same as 12617c478bd9Sstevel@tonic-gate * one previously used, the process may have changed directory. 12627c478bd9Sstevel@tonic-gate */ 12637c478bd9Sstevel@tonic-gate if ((err == 0) && (nname[0] == '/')) { 12649aa23310Srie if ((nlmp = fpavl_recorded(lml, nname, 12657c478bd9Sstevel@tonic-gate &(fdesc->fd_avlwhere))) != NULL) { 12667c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 12677c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 12687c478bd9Sstevel@tonic-gate return (1); 12697c478bd9Sstevel@tonic-gate } 12709aa23310Srie if (nfavl_recorded(nname, &nfavlwhere)) { 12719aa23310Srie /* 12729aa23310Srie * For dlopen() and dlsym() fall backs, indicate that 12739aa23310Srie * a registered not-found path has indicated that this 12749aa23310Srie * object does not exist. If this path has been 12759aa23310Srie * constructed as part of expanding a HWCAP directory, 12769aa23310Srie * and as this is a silent failure, where no rejection 12779aa23310Srie * message is created, free the original name to 12789aa23310Srie * simplify the life of the caller. 12799aa23310Srie */ 12809aa23310Srie if (in_nfavl) 12819aa23310Srie (*in_nfavl)++; 12829aa23310Srie if (flags & FLG_RT_HWCAP) 12839aa23310Srie free((void *)nname); 12849aa23310Srie return (0); 12859aa23310Srie } 12867c478bd9Sstevel@tonic-gate } 12877c478bd9Sstevel@tonic-gate 12887c478bd9Sstevel@tonic-gate if ((err == 0) && ((stat(nname, &status)) != -1)) { 12897c478bd9Sstevel@tonic-gate char path[PATH_MAX]; 12907c478bd9Sstevel@tonic-gate int fd, size, added; 12917c478bd9Sstevel@tonic-gate 12927c478bd9Sstevel@tonic-gate /* 12937c478bd9Sstevel@tonic-gate * If this path has been constructed as part of expanding a 12948521e5e6Srie * HWCAP directory, ignore any subdirectories. As this is a 12958521e5e6Srie * silent failure, where no rejection message is created, free 12968521e5e6Srie * the original name to simplify the life of the caller. For 12978521e5e6Srie * any other reference that expands to a directory, fall through 12988af2c5b9Srie * to construct a meaningful rejection message. 12997c478bd9Sstevel@tonic-gate */ 13007c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) && 13018521e5e6Srie ((status.st_mode & S_IFMT) == S_IFDIR)) { 13028521e5e6Srie free((void *)nname); 13037c478bd9Sstevel@tonic-gate return (0); 13048521e5e6Srie } 13057c478bd9Sstevel@tonic-gate 13067c478bd9Sstevel@tonic-gate /* 13077c478bd9Sstevel@tonic-gate * Resolve the filename and determine whether the resolved name 13087c478bd9Sstevel@tonic-gate * is already known. Typically, the previous fpavl_loaded() 13097c478bd9Sstevel@tonic-gate * will have caught this, as both NAME() and PATHNAME() for a 13107c478bd9Sstevel@tonic-gate * link-map are recorded in the FullNode AVL tree. However, 13117c478bd9Sstevel@tonic-gate * instances exist where a file can be replaced (loop-back 13127c478bd9Sstevel@tonic-gate * mounts, bfu, etc.), and reference is made to the original 13137c478bd9Sstevel@tonic-gate * file through a symbolic link. By checking the pathname here, 13147c478bd9Sstevel@tonic-gate * we don't fall through to the dev/inode check and conclude 13157c478bd9Sstevel@tonic-gate * that a new file should be loaded. 13167c478bd9Sstevel@tonic-gate */ 13177c478bd9Sstevel@tonic-gate if ((nname[0] == '/') && (rtld_flags & RT_FL_EXECNAME) && 13187c478bd9Sstevel@tonic-gate ((size = resolvepath(nname, path, (PATH_MAX - 1))) > 0)) { 13197c478bd9Sstevel@tonic-gate path[size] = '\0'; 13207c478bd9Sstevel@tonic-gate 13217c478bd9Sstevel@tonic-gate if (strcmp(nname, path)) { 132224a6229eSrie if ((nlmp = 13239aa23310Srie fpavl_recorded(lml, path, 0)) != NULL) { 13247c478bd9Sstevel@tonic-gate added = 0; 13257c478bd9Sstevel@tonic-gate 13267c478bd9Sstevel@tonic-gate if (append_alias(nlmp, nname, 13277c478bd9Sstevel@tonic-gate &added) == 0) 13287c478bd9Sstevel@tonic-gate return (0); 13297247f888Srie /* BEGIN CSTYLED */ 13307c478bd9Sstevel@tonic-gate if (added) 133110a4fa49Srie DBG_CALL(Dbg_file_skip(LIST(clmp), 13325aefb655Srie NAME(nlmp), nname)); 13337247f888Srie /* END CSTYLED */ 13347c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 13357c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 13367c478bd9Sstevel@tonic-gate return (1); 13377c478bd9Sstevel@tonic-gate } 13387c478bd9Sstevel@tonic-gate 13397c478bd9Sstevel@tonic-gate /* 13407c478bd9Sstevel@tonic-gate * If this pathname hasn't been loaded, save 13417c478bd9Sstevel@tonic-gate * the resolved pathname so that it doesn't 13427c478bd9Sstevel@tonic-gate * have to be recomputed as part of fullpath() 13437c478bd9Sstevel@tonic-gate * processing. 13447c478bd9Sstevel@tonic-gate */ 13458521e5e6Srie if ((fdesc->fd_pname = strdup(path)) == NULL) 13467c478bd9Sstevel@tonic-gate return (0); 13478521e5e6Srie resolved = 1; 13487c478bd9Sstevel@tonic-gate } else { 13497c478bd9Sstevel@tonic-gate /* 13507c478bd9Sstevel@tonic-gate * If the resolved name doesn't differ from the 13517c478bd9Sstevel@tonic-gate * original, save it without duplication. 13527c478bd9Sstevel@tonic-gate * Having fd_pname set indicates that no further 13537c478bd9Sstevel@tonic-gate * resolvepath processing is necessary. 13547c478bd9Sstevel@tonic-gate */ 13557c478bd9Sstevel@tonic-gate fdesc->fd_pname = nname; 13567c478bd9Sstevel@tonic-gate } 13577c478bd9Sstevel@tonic-gate } 13587c478bd9Sstevel@tonic-gate 13597c478bd9Sstevel@tonic-gate if (nlmp = is_devinode_loaded(&status, lml, nname, flags)) { 1360c75e1b9dSrie if (flags & FLG_RT_AUDIT) { 1361c75e1b9dSrie /* 1362c75e1b9dSrie * If we've been requested to load an auditor, 1363c75e1b9dSrie * and an auditor of the same name already 1364c75e1b9dSrie * exists, then the original auditor is used. 1365c75e1b9dSrie */ 1366c75e1b9dSrie DBG_CALL(Dbg_audit_skip(LIST(clmp), 1367c75e1b9dSrie NAME(nlmp), LIST(nlmp)->lm_lmidstr)); 1368c75e1b9dSrie } else { 1369c75e1b9dSrie /* 1370c75e1b9dSrie * Otherwise, if an alternatively named file 1371c75e1b9dSrie * has been found for the same dev/inode, add 1372c75e1b9dSrie * a new name alias, and insert any alias full 1373c75e1b9dSrie * pathname in the link-map lists AVL tree. 1374c75e1b9dSrie */ 13757c478bd9Sstevel@tonic-gate added = 0; 13767c478bd9Sstevel@tonic-gate 13777c478bd9Sstevel@tonic-gate if (append_alias(nlmp, nname, &added) == 0) 13787c478bd9Sstevel@tonic-gate return (0); 13797c478bd9Sstevel@tonic-gate if (added) { 1380c75e1b9dSrie if ((nname[0] == '/') && 1381c75e1b9dSrie (fpavl_insert(lml, nlmp, 1382c75e1b9dSrie nname, 0) == 0)) 13837c478bd9Sstevel@tonic-gate return (0); 1384c75e1b9dSrie DBG_CALL(Dbg_file_skip(LIST(clmp), 1385c75e1b9dSrie NAME(nlmp), nname)); 13867c478bd9Sstevel@tonic-gate } 1387c75e1b9dSrie } 1388c75e1b9dSrie 1389c75e1b9dSrie /* 1390c75e1b9dSrie * Record in the file descriptor the existing object 1391c75e1b9dSrie * that satisfies this open request. 1392c75e1b9dSrie */ 13937c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 13947c478bd9Sstevel@tonic-gate fdesc->fd_lmp = nlmp; 13957c478bd9Sstevel@tonic-gate return (1); 13967c478bd9Sstevel@tonic-gate } 13977c478bd9Sstevel@tonic-gate 13987c478bd9Sstevel@tonic-gate if ((fd = open(nname, O_RDONLY, 0)) == -1) { 13997c478bd9Sstevel@tonic-gate /* 14007c478bd9Sstevel@tonic-gate * As the file must exist for the previous stat() to 14017c478bd9Sstevel@tonic-gate * have succeeded, record the error condition. 14027c478bd9Sstevel@tonic-gate */ 14037c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 14047c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 14057c478bd9Sstevel@tonic-gate } else { 14067c478bd9Sstevel@tonic-gate Fct *ftp; 14077c478bd9Sstevel@tonic-gate 14087c478bd9Sstevel@tonic-gate if ((ftp = are_u_this(rej, fd, &status, nname)) != 0) { 14097c478bd9Sstevel@tonic-gate fdesc->fd_nname = nname; 14107c478bd9Sstevel@tonic-gate fdesc->fd_ftp = ftp; 14117c478bd9Sstevel@tonic-gate fdesc->fd_dev = status.st_dev; 14127c478bd9Sstevel@tonic-gate fdesc->fd_ino = status.st_ino; 14137c478bd9Sstevel@tonic-gate fdesc->fd_fd = fd; 14147c478bd9Sstevel@tonic-gate 14157c478bd9Sstevel@tonic-gate /* 14167c478bd9Sstevel@tonic-gate * Trace that this open has succeeded. 14177c478bd9Sstevel@tonic-gate */ 14187c478bd9Sstevel@tonic-gate if (lml->lm_flags & LML_FLG_TRC_ENABLE) { 14197c478bd9Sstevel@tonic-gate trace_so(clmp, 0, oname, nname, 14207247f888Srie (fdesc->fd_flags & FLG_FD_ALTER), 14217247f888Srie 0); 14227c478bd9Sstevel@tonic-gate } 14237c478bd9Sstevel@tonic-gate return (1); 14247c478bd9Sstevel@tonic-gate } 14257c478bd9Sstevel@tonic-gate (void) close(fd); 14267c478bd9Sstevel@tonic-gate } 14277c478bd9Sstevel@tonic-gate 14287c478bd9Sstevel@tonic-gate } else if (errno != ENOENT) { 14297c478bd9Sstevel@tonic-gate /* 14307c478bd9Sstevel@tonic-gate * If the open() failed for anything other than the file not 14317c478bd9Sstevel@tonic-gate * existing, record the error condition. 14327c478bd9Sstevel@tonic-gate */ 14337c478bd9Sstevel@tonic-gate rej->rej_type = SGS_REJ_STR; 14347c478bd9Sstevel@tonic-gate rej->rej_str = strerror(errno); 14357c478bd9Sstevel@tonic-gate } 14367c478bd9Sstevel@tonic-gate 14377c478bd9Sstevel@tonic-gate /* 14389aa23310Srie * Regardless of error, duplicate and record any full path names that 14399aa23310Srie * can't be used on the "not-found" AVL tree. 14409aa23310Srie */ 14419aa23310Srie if ((nname[0] == '/') && ((name = strdup(nname)) != NULL)) 14429aa23310Srie nfavl_insert(name, nfavlwhere); 14439aa23310Srie 14449aa23310Srie /* 14457c478bd9Sstevel@tonic-gate * Indicate any rejection. 14467c478bd9Sstevel@tonic-gate */ 14477c478bd9Sstevel@tonic-gate if (rej->rej_type) { 14488521e5e6Srie /* 14498521e5e6Srie * If this pathname was resolved and duplicated, remove the 14508521e5e6Srie * allocated name to simplify the cleanup of the callers. 14518521e5e6Srie */ 14528521e5e6Srie if (resolved) { 14538521e5e6Srie free((void *)fdesc->fd_pname); 14548521e5e6Srie fdesc->fd_pname = NULL; 14558521e5e6Srie } 14567c478bd9Sstevel@tonic-gate rej->rej_name = nname; 14577c478bd9Sstevel@tonic-gate rej->rej_flag = (fdesc->fd_flags & FLG_FD_ALTER); 1458ba2be530Sab196087 DBG_CALL(Dbg_file_rejected(lml, rej, M_MACH)); 14597c478bd9Sstevel@tonic-gate } 14607c478bd9Sstevel@tonic-gate return (0); 14617c478bd9Sstevel@tonic-gate } 14627c478bd9Sstevel@tonic-gate 14637c478bd9Sstevel@tonic-gate /* 14647c478bd9Sstevel@tonic-gate * Find a full pathname (it contains a "/"). 14657c478bd9Sstevel@tonic-gate */ 14667c478bd9Sstevel@tonic-gate int 14677c478bd9Sstevel@tonic-gate find_path(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 14689aa23310Srie Fdesc *fdesc, Rej_desc *rej, int *in_nfavl) 14697c478bd9Sstevel@tonic-gate { 14707c478bd9Sstevel@tonic-gate int err = 0; 14717c478bd9Sstevel@tonic-gate 14727c478bd9Sstevel@tonic-gate /* 14737c478bd9Sstevel@tonic-gate * If directory configuration exists determine if this path is known. 14747c478bd9Sstevel@tonic-gate */ 14757c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DIRCFG) { 14767c478bd9Sstevel@tonic-gate Rtc_obj *obj; 14777c478bd9Sstevel@tonic-gate const char *aname; 14787c478bd9Sstevel@tonic-gate 14797c478bd9Sstevel@tonic-gate if ((obj = elf_config_ent(oname, (Word)elf_hash(oname), 14807c478bd9Sstevel@tonic-gate 0, &aname)) != 0) { 14817c478bd9Sstevel@tonic-gate /* 14827c478bd9Sstevel@tonic-gate * If the configuration file states that this path is a 14837c478bd9Sstevel@tonic-gate * directory, or the path is explicitly defined as 14847c478bd9Sstevel@tonic-gate * non-existent (ie. a unused platform specific 14857c478bd9Sstevel@tonic-gate * library), then go no further. 14867c478bd9Sstevel@tonic-gate */ 14877c478bd9Sstevel@tonic-gate if (obj->co_flags & RTC_OBJ_DIRENT) { 14887c478bd9Sstevel@tonic-gate err = EISDIR; 14897c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & 14907c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == 14917c478bd9Sstevel@tonic-gate RTC_OBJ_NOEXIST) { 14927c478bd9Sstevel@tonic-gate err = ENOENT; 14937c478bd9Sstevel@tonic-gate } else if ((obj->co_flags & RTC_OBJ_ALTER) && 14947c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && (lml == &lml_main)) { 14957c478bd9Sstevel@tonic-gate int ret; 14967c478bd9Sstevel@tonic-gate 14977c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 14987c478bd9Sstevel@tonic-gate /* 14997c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. If 15007c478bd9Sstevel@tonic-gate * this fails, and the alternative is flagged 15017c478bd9Sstevel@tonic-gate * as optional, fall through to open the 15027c478bd9Sstevel@tonic-gate * original path. 15037c478bd9Sstevel@tonic-gate */ 15045aefb655Srie DBG_CALL(Dbg_libs_found(lml, aname, 15055aefb655Srie FLG_FD_ALTER)); 15067c478bd9Sstevel@tonic-gate if (((ret = file_open(0, lml, oname, aname, 15079aa23310Srie clmp, flags, fdesc, rej, in_nfavl)) != 0) || 15087c478bd9Sstevel@tonic-gate ((obj->co_flags & RTC_OBJ_OPTINAL) == 0)) 15097c478bd9Sstevel@tonic-gate return (ret); 15107c478bd9Sstevel@tonic-gate 15117c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 15127c478bd9Sstevel@tonic-gate } 15137c478bd9Sstevel@tonic-gate } 15147c478bd9Sstevel@tonic-gate } 15155aefb655Srie DBG_CALL(Dbg_libs_found(lml, oname, 0)); 15169aa23310Srie return (file_open(err, lml, oname, oname, clmp, flags, fdesc, 15179aa23310Srie rej, in_nfavl)); 15187c478bd9Sstevel@tonic-gate } 15197c478bd9Sstevel@tonic-gate 15207c478bd9Sstevel@tonic-gate /* 15217c478bd9Sstevel@tonic-gate * Find a simple filename (it doesn't contain a "/"). 15227c478bd9Sstevel@tonic-gate */ 15237c478bd9Sstevel@tonic-gate static int 15247c478bd9Sstevel@tonic-gate _find_file(Lm_list *lml, const char *oname, const char *nname, Rt_map *clmp, 15259aa23310Srie uint_t flags, Fdesc *fdesc, Rej_desc *rej, Pnode *dir, int aflag, 15269aa23310Srie int *in_nfavl) 15277c478bd9Sstevel@tonic-gate { 15285aefb655Srie DBG_CALL(Dbg_libs_found(lml, nname, aflag)); 15297c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_SEARCH) && 15307c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 15317c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_PTH_TRYING), nname, aflag ? 15327c478bd9Sstevel@tonic-gate MSG_INTL(MSG_LDD_FIL_ALTER) : MSG_ORIG(MSG_STR_EMPTY)); 15337c478bd9Sstevel@tonic-gate } 15347c478bd9Sstevel@tonic-gate 15357c478bd9Sstevel@tonic-gate /* 15367c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're about 15377c478bd9Sstevel@tonic-gate * to go search for. The audit library may offer an alternative 15387c478bd9Sstevel@tonic-gate * dependency, or indicate that this dependency should be ignored. 15397c478bd9Sstevel@tonic-gate */ 15407c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 15419aa23310Srie char *aname; 15427c478bd9Sstevel@tonic-gate 15439aa23310Srie if ((aname = audit_objsearch(clmp, nname, 15449aa23310Srie (dir->p_orig & LA_SER_MASK))) == 0) { 15457247f888Srie DBG_CALL(Dbg_audit_terminate(lml, nname)); 15467c478bd9Sstevel@tonic-gate return (0); 15477247f888Srie } 15487247f888Srie 15497247f888Srie /* 15507247f888Srie * Protect ourselves from auditor mischief, by copying any 15517247f888Srie * alternative name over the present name (the present name is 15527247f888Srie * maintained in a static buffer - see elf_get_so()); 15537247f888Srie */ 15547247f888Srie if (nname != aname) 15557247f888Srie (void) strncpy((char *)nname, aname, PATH_MAX); 15567c478bd9Sstevel@tonic-gate } 15579aa23310Srie return (file_open(0, lml, oname, nname, clmp, flags, fdesc, 15589aa23310Srie rej, in_nfavl)); 15597c478bd9Sstevel@tonic-gate } 15607c478bd9Sstevel@tonic-gate 1561390b98b5Srie static int 15627c478bd9Sstevel@tonic-gate find_file(Lm_list *lml, const char *oname, Rt_map *clmp, uint_t flags, 15639aa23310Srie Fdesc *fdesc, Rej_desc *rej, Pnode *dir, Word * strhash, size_t olen, 15649aa23310Srie int *in_nfavl) 15657c478bd9Sstevel@tonic-gate { 15667c478bd9Sstevel@tonic-gate static Rtc_obj Obj = { 0 }; 15677c478bd9Sstevel@tonic-gate Rtc_obj *dobj; 15687c478bd9Sstevel@tonic-gate const char *nname = oname; 15697c478bd9Sstevel@tonic-gate 15707c478bd9Sstevel@tonic-gate if (dir->p_name == 0) 15717c478bd9Sstevel@tonic-gate return (0); 15727c478bd9Sstevel@tonic-gate if (dir->p_info) { 15737c478bd9Sstevel@tonic-gate dobj = (Rtc_obj *)dir->p_info; 15747c478bd9Sstevel@tonic-gate if ((dobj->co_flags & 15757c478bd9Sstevel@tonic-gate (RTC_OBJ_NOEXIST | RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 15767c478bd9Sstevel@tonic-gate return (0); 15777c478bd9Sstevel@tonic-gate } else 15787c478bd9Sstevel@tonic-gate dobj = 0; 15797c478bd9Sstevel@tonic-gate 15807c478bd9Sstevel@tonic-gate /* 15817c478bd9Sstevel@tonic-gate * If configuration information exists see if this directory/file 15827c478bd9Sstevel@tonic-gate * combination exists. 15837c478bd9Sstevel@tonic-gate */ 15847c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_DIRCFG) && 15857c478bd9Sstevel@tonic-gate ((dobj == 0) || (dobj->co_id != 0))) { 15867c478bd9Sstevel@tonic-gate Rtc_obj *fobj; 15877c478bd9Sstevel@tonic-gate const char *alt = 0; 15887c478bd9Sstevel@tonic-gate 15897c478bd9Sstevel@tonic-gate /* 15907c478bd9Sstevel@tonic-gate * If this pnode has not yet been searched for in the 15917c478bd9Sstevel@tonic-gate * configuration file go find it. 15927c478bd9Sstevel@tonic-gate */ 15937c478bd9Sstevel@tonic-gate if (dobj == 0) { 15947c478bd9Sstevel@tonic-gate dobj = elf_config_ent(dir->p_name, 15957c478bd9Sstevel@tonic-gate (Word)elf_hash(dir->p_name), 0, 0); 15967c478bd9Sstevel@tonic-gate if (dobj == 0) 15977c478bd9Sstevel@tonic-gate dobj = &Obj; 15987c478bd9Sstevel@tonic-gate dir->p_info = (void *)dobj; 15997c478bd9Sstevel@tonic-gate 16007c478bd9Sstevel@tonic-gate if ((dobj->co_flags & (RTC_OBJ_NOEXIST | 16017c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 16027c478bd9Sstevel@tonic-gate return (0); 16037c478bd9Sstevel@tonic-gate } 16047c478bd9Sstevel@tonic-gate 16057c478bd9Sstevel@tonic-gate /* 16067c478bd9Sstevel@tonic-gate * If we found a directory search for the file. 16077c478bd9Sstevel@tonic-gate */ 16087c478bd9Sstevel@tonic-gate if (dobj->co_id != 0) { 16097c478bd9Sstevel@tonic-gate if (*strhash == 0) 16107c478bd9Sstevel@tonic-gate *strhash = (Word)elf_hash(nname); 16117c478bd9Sstevel@tonic-gate fobj = elf_config_ent(nname, *strhash, 16127c478bd9Sstevel@tonic-gate dobj->co_id, &alt); 16137c478bd9Sstevel@tonic-gate 16147c478bd9Sstevel@tonic-gate /* 16157c478bd9Sstevel@tonic-gate * If this object specifically does not exist, or the 16167c478bd9Sstevel@tonic-gate * object can't be found in a know-all-entries 16177c478bd9Sstevel@tonic-gate * directory, continue looking. If the object does 16187c478bd9Sstevel@tonic-gate * exist determine if an alternative object exists. 16197c478bd9Sstevel@tonic-gate */ 16207c478bd9Sstevel@tonic-gate if (fobj == 0) { 16217c478bd9Sstevel@tonic-gate if (dobj->co_flags & RTC_OBJ_ALLENTS) 16227c478bd9Sstevel@tonic-gate return (0); 16237c478bd9Sstevel@tonic-gate } else { 16247c478bd9Sstevel@tonic-gate if ((fobj->co_flags & (RTC_OBJ_NOEXIST | 16257c478bd9Sstevel@tonic-gate RTC_OBJ_ALTER)) == RTC_OBJ_NOEXIST) 16267c478bd9Sstevel@tonic-gate return (0); 16277c478bd9Sstevel@tonic-gate 16287c478bd9Sstevel@tonic-gate if ((fobj->co_flags & RTC_OBJ_ALTER) && 16297c478bd9Sstevel@tonic-gate (rtld_flags & RT_FL_OBJALT) && 16307c478bd9Sstevel@tonic-gate (lml == &lml_main)) { 16317c478bd9Sstevel@tonic-gate int ret; 16327c478bd9Sstevel@tonic-gate 16337c478bd9Sstevel@tonic-gate fdesc->fd_flags |= FLG_FD_ALTER; 16347c478bd9Sstevel@tonic-gate /* 16357c478bd9Sstevel@tonic-gate * Attempt to open the alternative path. 16367c478bd9Sstevel@tonic-gate * If this fails, and the alternative is 16377c478bd9Sstevel@tonic-gate * flagged as optional, fall through to 16387c478bd9Sstevel@tonic-gate * open the original path. 16397c478bd9Sstevel@tonic-gate */ 16407c478bd9Sstevel@tonic-gate ret = _find_file(lml, oname, alt, clmp, 16419aa23310Srie flags, fdesc, rej, dir, 1, 16429aa23310Srie in_nfavl); 16437c478bd9Sstevel@tonic-gate if (ret || ((fobj->co_flags & 16447c478bd9Sstevel@tonic-gate RTC_OBJ_OPTINAL) == 0)) 16457c478bd9Sstevel@tonic-gate return (ret); 16467c478bd9Sstevel@tonic-gate 16477c478bd9Sstevel@tonic-gate fdesc->fd_flags &= ~FLG_FD_ALTER; 16487c478bd9Sstevel@tonic-gate } 16497c478bd9Sstevel@tonic-gate } 16507c478bd9Sstevel@tonic-gate } 16517c478bd9Sstevel@tonic-gate } 16527c478bd9Sstevel@tonic-gate 16537c478bd9Sstevel@tonic-gate /* 16547c478bd9Sstevel@tonic-gate * Protect ourselves from building an invalid pathname. 16557c478bd9Sstevel@tonic-gate */ 16567c478bd9Sstevel@tonic-gate if ((olen + dir->p_len + 1) >= PATH_MAX) { 16575aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), nname, 16587c478bd9Sstevel@tonic-gate strerror(ENAMETOOLONG)); 16597c478bd9Sstevel@tonic-gate return (0); 16607c478bd9Sstevel@tonic-gate } 16617c478bd9Sstevel@tonic-gate if ((nname = (LM_GET_SO(clmp)(dir->p_name, nname))) == 0) 16627c478bd9Sstevel@tonic-gate return (0); 16637c478bd9Sstevel@tonic-gate 16649aa23310Srie return (_find_file(lml, oname, nname, clmp, flags, fdesc, rej, 16659aa23310Srie dir, 0, in_nfavl)); 16667c478bd9Sstevel@tonic-gate } 16677c478bd9Sstevel@tonic-gate 16687c478bd9Sstevel@tonic-gate /* 16697c478bd9Sstevel@tonic-gate * A unique file has been opened. Create a link-map to represent it, and 16707c478bd9Sstevel@tonic-gate * process the various names by which it can be referenced. 16717c478bd9Sstevel@tonic-gate */ 16727c478bd9Sstevel@tonic-gate static Rt_map * 16739aa23310Srie load_file(Lm_list *lml, Aliste lmco, Fdesc *fdesc, int *in_nfavl) 16747c478bd9Sstevel@tonic-gate { 16757c478bd9Sstevel@tonic-gate const char *oname = fdesc->fd_oname; 16767c478bd9Sstevel@tonic-gate const char *nname = fdesc->fd_nname; 16777c478bd9Sstevel@tonic-gate Rt_map *nlmp; 16787c478bd9Sstevel@tonic-gate 16797c478bd9Sstevel@tonic-gate /* 16807c478bd9Sstevel@tonic-gate * Typically we call fct_map_so() with the full pathname of the opened 16817c478bd9Sstevel@tonic-gate * file (nname) and the name that started the search (oname), thus for 16827c478bd9Sstevel@tonic-gate * a typical dependency on libc this would be /usr/lib/libc.so.1 and 16837c478bd9Sstevel@tonic-gate * libc.so.1 (DT_NEEDED). The original name is maintained on an ALIAS 16847c478bd9Sstevel@tonic-gate * list for comparison when bringing in new dependencies. If the user 16857c478bd9Sstevel@tonic-gate * specified name as a full path (from a dlopen() for example) then 16867c478bd9Sstevel@tonic-gate * there's no need to create an ALIAS. 16877c478bd9Sstevel@tonic-gate */ 16887c478bd9Sstevel@tonic-gate if (strcmp(oname, nname) == 0) 16897c478bd9Sstevel@tonic-gate oname = 0; 16907c478bd9Sstevel@tonic-gate 16917c478bd9Sstevel@tonic-gate /* 16927c478bd9Sstevel@tonic-gate * A new file has been opened, now map it into the process. Close the 16937c478bd9Sstevel@tonic-gate * original file so as not to accumulate file descriptors. 16947c478bd9Sstevel@tonic-gate */ 16957c478bd9Sstevel@tonic-gate nlmp = ((fdesc->fd_ftp)->fct_map_so)(lml, lmco, nname, oname, 16969aa23310Srie fdesc->fd_fd, in_nfavl); 16977c478bd9Sstevel@tonic-gate (void) close(fdesc->fd_fd); 16987c478bd9Sstevel@tonic-gate fdesc->fd_fd = 0; 16997c478bd9Sstevel@tonic-gate 17007c478bd9Sstevel@tonic-gate if (nlmp == 0) 17017c478bd9Sstevel@tonic-gate return (0); 17027c478bd9Sstevel@tonic-gate 17037c478bd9Sstevel@tonic-gate /* 17047c478bd9Sstevel@tonic-gate * Save the dev/inode information for later comparisons. 17057c478bd9Sstevel@tonic-gate */ 17067c478bd9Sstevel@tonic-gate STDEV(nlmp) = fdesc->fd_dev; 17077c478bd9Sstevel@tonic-gate STINO(nlmp) = fdesc->fd_ino; 17087c478bd9Sstevel@tonic-gate 17097c478bd9Sstevel@tonic-gate /* 17107c478bd9Sstevel@tonic-gate * Insert the names of this link-map into the FullpathNode AVL tree. 17117c478bd9Sstevel@tonic-gate * Save both the NAME() and PATHNAME() is they differ. 17127c478bd9Sstevel@tonic-gate * 17137c478bd9Sstevel@tonic-gate * If this is an OBJECT file, don't insert it yet as this is only a 17147c478bd9Sstevel@tonic-gate * temporary link-map. During elf_obj_fini() the final link-map is 17157c478bd9Sstevel@tonic-gate * created, and its names will be inserted in the FullpathNode AVL 17167c478bd9Sstevel@tonic-gate * tree at that time. 17177c478bd9Sstevel@tonic-gate */ 17187c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_OBJECT) == 0) { 17197c478bd9Sstevel@tonic-gate /* 17207c478bd9Sstevel@tonic-gate * Update the objects full path information if necessary. 172111a2bb38Srie * Note, with pathname expansion in effect, the fd_pname will 172211a2bb38Srie * be used as PATHNAME(). This allocated string will be freed 172311a2bb38Srie * should this object be deleted. However, without pathname 172411a2bb38Srie * expansion, the fd_name should be freed now, as it is no 172511a2bb38Srie * longer referenced. 17267c478bd9Sstevel@tonic-gate */ 172711a2bb38Srie if (FLAGS1(nlmp) & FL1_RT_RELATIVE) 17287c478bd9Sstevel@tonic-gate (void) fullpath(nlmp, fdesc->fd_pname); 172911a2bb38Srie else if (fdesc->fd_pname != fdesc->fd_nname) 173011a2bb38Srie free((void *)fdesc->fd_pname); 17317c478bd9Sstevel@tonic-gate fdesc->fd_pname = 0; 17327c478bd9Sstevel@tonic-gate 17337c478bd9Sstevel@tonic-gate if ((NAME(nlmp)[0] == '/') && (fpavl_insert(lml, nlmp, 17347c478bd9Sstevel@tonic-gate NAME(nlmp), fdesc->fd_avlwhere) == 0)) { 17357c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 17367c478bd9Sstevel@tonic-gate return (0); 17377c478bd9Sstevel@tonic-gate } 17387c478bd9Sstevel@tonic-gate if (((NAME(nlmp)[0] != '/') || 17397c478bd9Sstevel@tonic-gate (NAME(nlmp) != PATHNAME(nlmp))) && 17407c478bd9Sstevel@tonic-gate (fpavl_insert(lml, nlmp, PATHNAME(nlmp), 0) == 0)) { 17417c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 17427c478bd9Sstevel@tonic-gate return (0); 17437c478bd9Sstevel@tonic-gate } 17447c478bd9Sstevel@tonic-gate } 17457c478bd9Sstevel@tonic-gate 17467c478bd9Sstevel@tonic-gate /* 17477c478bd9Sstevel@tonic-gate * If we're processing an alternative object reset the original name 17487c478bd9Sstevel@tonic-gate * for possible $ORIGIN processing. 17497c478bd9Sstevel@tonic-gate */ 17507c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_ALTER) { 17517c478bd9Sstevel@tonic-gate const char *odir; 17527c478bd9Sstevel@tonic-gate char *ndir; 17537c478bd9Sstevel@tonic-gate size_t olen; 17547c478bd9Sstevel@tonic-gate 17557c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= FLG_RT_ALTER; 17567c478bd9Sstevel@tonic-gate 17577c478bd9Sstevel@tonic-gate /* 17587c478bd9Sstevel@tonic-gate * If we were given a pathname containing a slash then the 17597c478bd9Sstevel@tonic-gate * original name is still in oname. Otherwise the original 17607c478bd9Sstevel@tonic-gate * directory is in dir->p_name (which is all we need for 17617c478bd9Sstevel@tonic-gate * $ORIGIN). 17627c478bd9Sstevel@tonic-gate */ 17637c478bd9Sstevel@tonic-gate if (fdesc->fd_flags & FLG_FD_SLASH) { 17647c478bd9Sstevel@tonic-gate char *ofil; 17657c478bd9Sstevel@tonic-gate 17667c478bd9Sstevel@tonic-gate odir = oname; 17677c478bd9Sstevel@tonic-gate ofil = strrchr(oname, '/'); 17687c478bd9Sstevel@tonic-gate olen = ofil - odir + 1; 17697c478bd9Sstevel@tonic-gate } else { 17707c478bd9Sstevel@tonic-gate odir = fdesc->fd_odir; 17717c478bd9Sstevel@tonic-gate olen = strlen(odir) + 1; 17727c478bd9Sstevel@tonic-gate } 17737c478bd9Sstevel@tonic-gate 17747c478bd9Sstevel@tonic-gate if ((ndir = (char *)malloc(olen)) == 0) { 17757c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 17767c478bd9Sstevel@tonic-gate return (0); 17777c478bd9Sstevel@tonic-gate } 17787c478bd9Sstevel@tonic-gate (void) strncpy(ndir, odir, olen); 17797c478bd9Sstevel@tonic-gate ndir[--olen] = '\0'; 17807c478bd9Sstevel@tonic-gate 17817c478bd9Sstevel@tonic-gate ORIGNAME(nlmp) = ndir; 17827c478bd9Sstevel@tonic-gate DIRSZ(nlmp) = olen; 17837c478bd9Sstevel@tonic-gate } 17847c478bd9Sstevel@tonic-gate 17857c478bd9Sstevel@tonic-gate /* 1786390b98b5Srie * Identify this as a new object. 17877c478bd9Sstevel@tonic-gate */ 1788390b98b5Srie FLAGS(nlmp) |= FLG_RT_NEWLOAD; 17897c478bd9Sstevel@tonic-gate 17907c478bd9Sstevel@tonic-gate return (nlmp); 17917c478bd9Sstevel@tonic-gate } 17927c478bd9Sstevel@tonic-gate 17937c478bd9Sstevel@tonic-gate /* 17947c478bd9Sstevel@tonic-gate * This function loads the named file and returns a pointer to its link map. 17957c478bd9Sstevel@tonic-gate * It is assumed that the caller has already checked that the file is not 17967c478bd9Sstevel@tonic-gate * already loaded before calling this function (refer is_so_loaded()). 17977c478bd9Sstevel@tonic-gate * Find and open the file, map it into memory, add it to the end of the list 17987c478bd9Sstevel@tonic-gate * of link maps and return a pointer to the new link map. Return 0 on error. 17997c478bd9Sstevel@tonic-gate */ 18007c478bd9Sstevel@tonic-gate static Rt_map * 18017c478bd9Sstevel@tonic-gate load_so(Lm_list *lml, Aliste lmco, const char *oname, Rt_map *clmp, 18029aa23310Srie uint_t flags, Fdesc *nfdp, Rej_desc *rej, int *in_nfavl) 18037c478bd9Sstevel@tonic-gate { 18047c478bd9Sstevel@tonic-gate char *name; 18057c478bd9Sstevel@tonic-gate uint_t slash = 0; 18067c478bd9Sstevel@tonic-gate size_t olen; 1807fb1354edSrie Fdesc fdesc = { 0 }; 18087c478bd9Sstevel@tonic-gate Pnode *dir; 18097c478bd9Sstevel@tonic-gate 18107c478bd9Sstevel@tonic-gate /* 18117c478bd9Sstevel@tonic-gate * If the file is the run time linker then it's already loaded. 18127c478bd9Sstevel@tonic-gate */ 18137c478bd9Sstevel@tonic-gate if (interp && (strcmp(oname, NAME(lml_rtld.lm_head)) == 0)) 18147c478bd9Sstevel@tonic-gate return (lml_rtld.lm_head); 18157c478bd9Sstevel@tonic-gate 18167c478bd9Sstevel@tonic-gate /* 18178af2c5b9Srie * If this isn't a hardware capabilities pathname, which is already a 18187c478bd9Sstevel@tonic-gate * full, duplicated pathname, determine whether the pathname contains 18197c478bd9Sstevel@tonic-gate * a slash, and if not determine the input filename (for max path 18207c478bd9Sstevel@tonic-gate * length verification). 18217c478bd9Sstevel@tonic-gate */ 18227c478bd9Sstevel@tonic-gate if ((flags & FLG_RT_HWCAP) == 0) { 18237c478bd9Sstevel@tonic-gate const char *str; 18247c478bd9Sstevel@tonic-gate 18257c478bd9Sstevel@tonic-gate for (str = oname; *str; str++) { 18267c478bd9Sstevel@tonic-gate if (*str == '/') { 18277c478bd9Sstevel@tonic-gate slash++; 18287c478bd9Sstevel@tonic-gate break; 18297c478bd9Sstevel@tonic-gate } 18307c478bd9Sstevel@tonic-gate } 18317c478bd9Sstevel@tonic-gate if (slash == 0) 18327c478bd9Sstevel@tonic-gate olen = (str - oname) + 1; 18337c478bd9Sstevel@tonic-gate } 18347c478bd9Sstevel@tonic-gate 18357c478bd9Sstevel@tonic-gate /* 18367c478bd9Sstevel@tonic-gate * If we are passed a 'null' link-map this means that this is the first 18377c478bd9Sstevel@tonic-gate * object to be loaded on this link-map list. In that case we set the 18387c478bd9Sstevel@tonic-gate * link-map to ld.so.1's link-map. 18397c478bd9Sstevel@tonic-gate * 18407c478bd9Sstevel@tonic-gate * This link-map is referenced to determine what lookup rules to use 18417c478bd9Sstevel@tonic-gate * when searching for files. By using ld.so.1's we are defaulting to 18427c478bd9Sstevel@tonic-gate * ELF look-up rules. 18437c478bd9Sstevel@tonic-gate * 18447c478bd9Sstevel@tonic-gate * Note: This case happens when loading the first object onto 18457c478bd9Sstevel@tonic-gate * the plt_tracing link-map. 18467c478bd9Sstevel@tonic-gate */ 18477c478bd9Sstevel@tonic-gate if (clmp == 0) 18487c478bd9Sstevel@tonic-gate clmp = lml_rtld.lm_head; 18497c478bd9Sstevel@tonic-gate 18507c478bd9Sstevel@tonic-gate /* 18517c478bd9Sstevel@tonic-gate * If this path resulted from a $HWCAP specification, then the best 18527c478bd9Sstevel@tonic-gate * hardware capability object has already been establish, and is 18537c478bd9Sstevel@tonic-gate * available in the calling file descriptor. Perform some minor book- 18547c478bd9Sstevel@tonic-gate * keeping so that we can fall through into common code. 18557c478bd9Sstevel@tonic-gate */ 18567c478bd9Sstevel@tonic-gate if (flags & FLG_RT_HWCAP) { 18577c478bd9Sstevel@tonic-gate /* 1858fb1354edSrie * If this object is already loaded, we're done. 18597c478bd9Sstevel@tonic-gate */ 1860fb1354edSrie if (nfdp->fd_lmp) 1861fb1354edSrie return (nfdp->fd_lmp); 18627c478bd9Sstevel@tonic-gate 18637c478bd9Sstevel@tonic-gate /* 18647c478bd9Sstevel@tonic-gate * Obtain the avl index for this object. 18657c478bd9Sstevel@tonic-gate */ 18669aa23310Srie (void) fpavl_recorded(lml, nfdp->fd_nname, 18679aa23310Srie &(nfdp->fd_avlwhere)); 1868bbf522bdSrie 1869bbf522bdSrie /* 1870fb1354edSrie * If the name and resolved pathname differ, duplicate the path 18718af2c5b9Srie * name once more to provide for generic cleanup by the caller. 1872bbf522bdSrie */ 1873fb1354edSrie if (nfdp->fd_pname && (nfdp->fd_nname != nfdp->fd_pname)) { 1874bbf522bdSrie char *pname; 1875bbf522bdSrie 18768521e5e6Srie if ((pname = strdup(nfdp->fd_pname)) == NULL) 1877bbf522bdSrie return (0); 1878fb1354edSrie nfdp->fd_pname = pname; 1879bbf522bdSrie } 18807c478bd9Sstevel@tonic-gate } else if (slash) { 18817c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 18827c478bd9Sstevel@tonic-gate 1883fb1354edSrie *nfdp = fdesc; 1884fb1354edSrie nfdp->fd_flags = FLG_FD_SLASH; 18857c478bd9Sstevel@tonic-gate 18869aa23310Srie if (find_path(lml, oname, clmp, flags, nfdp, 18879aa23310Srie &_rej, in_nfavl) == 0) { 188831fdd7caSab196087 rejection_inherit(rej, &_rej); 18897c478bd9Sstevel@tonic-gate return (0); 18907c478bd9Sstevel@tonic-gate } 18917c478bd9Sstevel@tonic-gate 18927c478bd9Sstevel@tonic-gate /* 18937c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 18947c478bd9Sstevel@tonic-gate */ 1895fb1354edSrie if (nfdp->fd_lmp) 1896fb1354edSrie return (nfdp->fd_lmp); 18977c478bd9Sstevel@tonic-gate 18987c478bd9Sstevel@tonic-gate } else { 18997c478bd9Sstevel@tonic-gate /* 19007c478bd9Sstevel@tonic-gate * No '/' - for each directory on list, make a pathname using 19017c478bd9Sstevel@tonic-gate * that directory and filename and try to open that file. 19027c478bd9Sstevel@tonic-gate */ 19037c478bd9Sstevel@tonic-gate Pnode *dirlist = (Pnode *)0; 19047c478bd9Sstevel@tonic-gate Word strhash = 0; 1905fb1354edSrie #if !defined(ISSOLOAD_BASENAME_DISABLED) 1906fb1354edSrie Rt_map *nlmp; 1907fb1354edSrie #endif 19085aefb655Srie DBG_CALL(Dbg_libs_find(lml, oname)); 19097c478bd9Sstevel@tonic-gate 19107c478bd9Sstevel@tonic-gate #if !defined(ISSOLOAD_BASENAME_DISABLED) 19119aa23310Srie if ((nlmp = is_so_loaded(lml, oname, in_nfavl))) 19127c478bd9Sstevel@tonic-gate return (nlmp); 19137c478bd9Sstevel@tonic-gate #endif 19147c478bd9Sstevel@tonic-gate /* 19157c478bd9Sstevel@tonic-gate * Make sure we clear the file descriptor new name in case the 19167c478bd9Sstevel@tonic-gate * following directory search doesn't provide any directories 19177c478bd9Sstevel@tonic-gate * (odd, but this can be forced with a -znodefaultlib test). 19187c478bd9Sstevel@tonic-gate */ 1919fb1354edSrie *nfdp = fdesc; 19207c478bd9Sstevel@tonic-gate for (dir = get_next_dir(&dirlist, clmp, flags); dir; 19217c478bd9Sstevel@tonic-gate dir = get_next_dir(&dirlist, clmp, flags)) { 19227c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 19237c478bd9Sstevel@tonic-gate 1924fb1354edSrie *nfdp = fdesc; 19257c478bd9Sstevel@tonic-gate 19267c478bd9Sstevel@tonic-gate /* 19279aa23310Srie * Under debugging, duplicate path name entries are 19289aa23310Srie * tagged but remain part of the search path list so 19299aa23310Srie * that they can be diagnosed under "unused" processing. 19309aa23310Srie * Skip these entries, as this path would have already 19319aa23310Srie * been attempted. 19329aa23310Srie */ 19339aa23310Srie if (dir->p_orig & PN_FLG_DUPLICAT) 19349aa23310Srie continue; 19359aa23310Srie 19369aa23310Srie /* 19377c478bd9Sstevel@tonic-gate * Try and locate this file. Make sure to clean up 19387c478bd9Sstevel@tonic-gate * any rejection information should the file have 19397c478bd9Sstevel@tonic-gate * been found, but not appropriate. 19407c478bd9Sstevel@tonic-gate */ 1941fb1354edSrie if (find_file(lml, oname, clmp, flags, nfdp, &_rej, 19429aa23310Srie dir, &strhash, olen, in_nfavl) == 0) { 194331fdd7caSab196087 rejection_inherit(rej, &_rej); 19447c478bd9Sstevel@tonic-gate continue; 19457c478bd9Sstevel@tonic-gate } 19467c478bd9Sstevel@tonic-gate 19477c478bd9Sstevel@tonic-gate /* 19489aa23310Srie * Indicate that this search path has been used. If 19499aa23310Srie * this is an LD_LIBRARY_PATH setting, ignore any use 19509aa23310Srie * by ld.so.1 itself. 19519aa23310Srie */ 19529aa23310Srie if (((dir->p_orig & LA_SER_LIBPATH) == 0) || 19539aa23310Srie ((lml->lm_flags & LML_FLG_RTLDLM) == 0)) 19549aa23310Srie dir->p_orig |= PN_FLG_USED; 19559aa23310Srie 19569aa23310Srie /* 19577c478bd9Sstevel@tonic-gate * If this object is already loaded, we're done. 19587c478bd9Sstevel@tonic-gate */ 1959fb1354edSrie if (nfdp->fd_lmp) 1960fb1354edSrie return (nfdp->fd_lmp); 19617c478bd9Sstevel@tonic-gate 1962fb1354edSrie nfdp->fd_odir = dir->p_name; 19637c478bd9Sstevel@tonic-gate break; 19647c478bd9Sstevel@tonic-gate } 19657c478bd9Sstevel@tonic-gate 19667c478bd9Sstevel@tonic-gate /* 19677c478bd9Sstevel@tonic-gate * If the file couldn't be loaded, do another comparison of 19687c478bd9Sstevel@tonic-gate * loaded files using just the basename. This catches folks 19697c478bd9Sstevel@tonic-gate * who may have loaded multiple full pathname files (possibly 19707c478bd9Sstevel@tonic-gate * from setxid applications) to satisfy dependency relationships 19717c478bd9Sstevel@tonic-gate * (i.e., a file might have a dependency on foo.so.1 which has 19727c478bd9Sstevel@tonic-gate * already been opened using its full pathname). 19737c478bd9Sstevel@tonic-gate */ 19748521e5e6Srie if (nfdp->fd_nname == NULL) 19759aa23310Srie return (is_so_loaded(lml, oname, in_nfavl)); 19767c478bd9Sstevel@tonic-gate } 19777c478bd9Sstevel@tonic-gate 19787c478bd9Sstevel@tonic-gate /* 19797c478bd9Sstevel@tonic-gate * Duplicate the file name so that NAME() is available in core files. 19807c478bd9Sstevel@tonic-gate * Note, that hardware capability names are already duplicated, but 19817c478bd9Sstevel@tonic-gate * they get duplicated once more to insure consistent cleanup in the 19827c478bd9Sstevel@tonic-gate * event of an error condition. 19837c478bd9Sstevel@tonic-gate */ 19848521e5e6Srie if ((name = strdup(nfdp->fd_nname)) == NULL) 19857c478bd9Sstevel@tonic-gate return (0); 1986fb1354edSrie 1987fb1354edSrie if (nfdp->fd_nname == nfdp->fd_pname) 1988fb1354edSrie nfdp->fd_nname = nfdp->fd_pname = name; 19897c478bd9Sstevel@tonic-gate else 1990fb1354edSrie nfdp->fd_nname = name; 19917c478bd9Sstevel@tonic-gate 19927c478bd9Sstevel@tonic-gate /* 19937c478bd9Sstevel@tonic-gate * Finish mapping the file and return the link-map descriptor. Note, 19947c478bd9Sstevel@tonic-gate * if this request originated from a HWCAP request, re-establish the 19957c478bd9Sstevel@tonic-gate * fdesc information. For single paged objects, such as filters, the 19967c478bd9Sstevel@tonic-gate * original mapping may have been sufficient to capture the file, thus 19977c478bd9Sstevel@tonic-gate * this mapping needs to be reset to insure it doesn't mistakenly get 19987c478bd9Sstevel@tonic-gate * unmapped as part of HWCAP cleanup. 19997c478bd9Sstevel@tonic-gate */ 20009aa23310Srie return (load_file(lml, lmco, nfdp, in_nfavl)); 20017c478bd9Sstevel@tonic-gate } 20027c478bd9Sstevel@tonic-gate 20037c478bd9Sstevel@tonic-gate /* 20047c478bd9Sstevel@tonic-gate * Trace an attempt to load an object. 20057c478bd9Sstevel@tonic-gate */ 20067247f888Srie int 20077247f888Srie load_trace(Lm_list *lml, const char **oname, Rt_map *clmp) 20087c478bd9Sstevel@tonic-gate { 20097247f888Srie const char *name = *oname; 20107247f888Srie 20117c478bd9Sstevel@tonic-gate /* 20127c478bd9Sstevel@tonic-gate * First generate any ldd(1) diagnostics. 20137c478bd9Sstevel@tonic-gate */ 20147c478bd9Sstevel@tonic-gate if ((lml->lm_flags & (LML_FLG_TRC_VERBOSE | LML_FLG_TRC_SEARCH)) && 20157c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) 20167c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, NAME(clmp)); 20177c478bd9Sstevel@tonic-gate 20187c478bd9Sstevel@tonic-gate /* 20197c478bd9Sstevel@tonic-gate * If we're being audited tell the audit library of the file we're 20207c478bd9Sstevel@tonic-gate * about to go search for. 20217c478bd9Sstevel@tonic-gate */ 20227c478bd9Sstevel@tonic-gate if (((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_ACTIVITY) && 20237c478bd9Sstevel@tonic-gate (lml == LIST(clmp))) 20247c478bd9Sstevel@tonic-gate audit_activity(clmp, LA_ACT_ADD); 20257c478bd9Sstevel@tonic-gate 20267c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_OBJSEARCH) { 20277247f888Srie char *aname = audit_objsearch(clmp, name, LA_SER_ORIG); 20287c478bd9Sstevel@tonic-gate 20297c478bd9Sstevel@tonic-gate /* 20307c478bd9Sstevel@tonic-gate * The auditor can indicate that this object should be ignored. 20317c478bd9Sstevel@tonic-gate */ 20327247f888Srie if (aname == NULL) { 20337247f888Srie DBG_CALL(Dbg_audit_terminate(lml, name)); 20347c478bd9Sstevel@tonic-gate return (0); 20357c478bd9Sstevel@tonic-gate } 20367c478bd9Sstevel@tonic-gate 20377c478bd9Sstevel@tonic-gate /* 20387247f888Srie * Protect ourselves from auditor mischief, by duplicating any 20397247f888Srie * alternative name. The original name has been allocated from 20407247f888Srie * expand(), so free this allocation before using the audit 20417247f888Srie * alternative. 20427c478bd9Sstevel@tonic-gate */ 20437247f888Srie if (name != aname) { 20447247f888Srie if ((aname = strdup(aname)) == NULL) { 20457247f888Srie eprintf(lml, ERR_FATAL, 20467247f888Srie MSG_INTL(MSG_GEN_AUDITERM), name); 20477247f888Srie return (0); 20487247f888Srie } 20497247f888Srie free((void *)*oname); 20507247f888Srie *oname = aname; 20517c478bd9Sstevel@tonic-gate } 20527c478bd9Sstevel@tonic-gate } 20537247f888Srie return (1); 20547c478bd9Sstevel@tonic-gate } 20557c478bd9Sstevel@tonic-gate 20567c478bd9Sstevel@tonic-gate /* 20577c478bd9Sstevel@tonic-gate * Having loaded an object and created a link-map to describe it, finish 20587c478bd9Sstevel@tonic-gate * processing this stage, including verifying any versioning requirements, 20597c478bd9Sstevel@tonic-gate * updating the objects mode, creating a handle if necessary, and adding this 20607c478bd9Sstevel@tonic-gate * object to existing handles if required. 20617c478bd9Sstevel@tonic-gate */ 2062390b98b5Srie static int 20637c478bd9Sstevel@tonic-gate load_finish(Lm_list *lml, const char *name, Rt_map *clmp, int nmode, 20647c478bd9Sstevel@tonic-gate uint_t flags, Grp_hdl **hdl, Rt_map *nlmp) 20657c478bd9Sstevel@tonic-gate { 2066cce0e03bSab196087 Aliste idx; 2067cce0e03bSab196087 Grp_hdl *ghp; 20687c478bd9Sstevel@tonic-gate int promote; 20697c478bd9Sstevel@tonic-gate 20707c478bd9Sstevel@tonic-gate /* 20717c478bd9Sstevel@tonic-gate * If this dependency is associated with a required version insure that 20727c478bd9Sstevel@tonic-gate * the version is present in the loaded file. 20737c478bd9Sstevel@tonic-gate */ 20747c478bd9Sstevel@tonic-gate if (((rtld_flags & RT_FL_NOVERSION) == 0) && 20757c478bd9Sstevel@tonic-gate (FCT(clmp) == &elf_fct) && VERNEED(clmp) && 20767c478bd9Sstevel@tonic-gate (LM_VERIFY_VERS(clmp)(name, clmp, nlmp) == 0)) 20777c478bd9Sstevel@tonic-gate return (0); 20787c478bd9Sstevel@tonic-gate 20797c478bd9Sstevel@tonic-gate /* 20807c478bd9Sstevel@tonic-gate * If this object has indicated that it should be isolated as a group 20817c478bd9Sstevel@tonic-gate * (DT_FLAGS_1 contains DF_1_GROUP - object was built with -B group), 20827c478bd9Sstevel@tonic-gate * or if the callers direct bindings indicate it should be isolated as 20837c478bd9Sstevel@tonic-gate * a group (DYNINFO flags contains FLG_DI_GROUP - dependency followed 20847c478bd9Sstevel@tonic-gate * -zgroupperm), establish the appropriate mode. 20857c478bd9Sstevel@tonic-gate * 20867c478bd9Sstevel@tonic-gate * The intent of an object defining itself as a group is to isolate the 20877c478bd9Sstevel@tonic-gate * relocation of the group within its own members, however, unless 20887c478bd9Sstevel@tonic-gate * opened through dlopen(), in which case we assume dlsym() will be used 20897c478bd9Sstevel@tonic-gate * to located symbols in the new object, we still need to associate it 20907c478bd9Sstevel@tonic-gate * with the caller for it to be bound with. This is equivalent to a 20917c478bd9Sstevel@tonic-gate * dlopen(RTLD_GROUP) and dlsym() using the returned handle. 20927c478bd9Sstevel@tonic-gate */ 20937c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) | flags) & FLG_RT_SETGROUP) { 20947c478bd9Sstevel@tonic-gate nmode &= ~RTLD_WORLD; 20957c478bd9Sstevel@tonic-gate nmode |= RTLD_GROUP; 20967c478bd9Sstevel@tonic-gate 20977c478bd9Sstevel@tonic-gate /* 20987c478bd9Sstevel@tonic-gate * If the object wasn't explicitly dlopen()'ed associate it with 20997c478bd9Sstevel@tonic-gate * the parent. 21007c478bd9Sstevel@tonic-gate */ 21019a411307Srie if ((flags & FLG_RT_HANDLE) == 0) 21027c478bd9Sstevel@tonic-gate nmode |= RTLD_PARENT; 21037c478bd9Sstevel@tonic-gate } 21047c478bd9Sstevel@tonic-gate 21057c478bd9Sstevel@tonic-gate /* 21067c478bd9Sstevel@tonic-gate * Establish new mode and flags. 21077c478bd9Sstevel@tonic-gate * 21087c478bd9Sstevel@tonic-gate * For patch backward compatibility, the following use of update_mode() 21097c478bd9Sstevel@tonic-gate * is disabled. 21107c478bd9Sstevel@tonic-gate */ 21117c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 21127c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DISFIX_1) 21137c478bd9Sstevel@tonic-gate promote = MODE(nlmp) |= 21147c478bd9Sstevel@tonic-gate (nmode & ~(RTLD_PARENT | RTLD_NOLOAD | RTLD_FIRST)); 21157c478bd9Sstevel@tonic-gate else 21167c478bd9Sstevel@tonic-gate #endif 21177c478bd9Sstevel@tonic-gate promote = update_mode(nlmp, MODE(nlmp), nmode); 21187c478bd9Sstevel@tonic-gate 21197c478bd9Sstevel@tonic-gate FLAGS(nlmp) |= flags; 21207c478bd9Sstevel@tonic-gate 21217c478bd9Sstevel@tonic-gate /* 21222926dd2eSrie * If this is a global object, ensure the associated link-map list can 21232926dd2eSrie * be rescanned for global, lazy dependencies. 21242926dd2eSrie */ 21252926dd2eSrie if (MODE(nlmp) & RTLD_GLOBAL) 21262926dd2eSrie LIST(nlmp)->lm_flags &= ~LML_FLG_NOPENDGLBLAZY; 21272926dd2eSrie 21282926dd2eSrie /* 21297c478bd9Sstevel@tonic-gate * If we've been asked to establish a handle create one for this object. 21307c478bd9Sstevel@tonic-gate * Or, if this object has already been analyzed, but this reference 21317c478bd9Sstevel@tonic-gate * requires that the mode of the object be promoted, also create a 21327c478bd9Sstevel@tonic-gate * handle to propagate the new modes to all this objects dependencies. 21337c478bd9Sstevel@tonic-gate */ 21347c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) | flags) & FLG_RT_HANDLE) || (promote && 21357c478bd9Sstevel@tonic-gate (FLAGS(nlmp) & FLG_RT_ANALYZED))) { 21368af2c5b9Srie uint_t oflags, hflags = 0, cdflags; 21377c478bd9Sstevel@tonic-gate 21388af2c5b9Srie /* 21398af2c5b9Srie * Establish any flags for the handle (Grp_hdl). 21408af2c5b9Srie * 21418af2c5b9Srie * . Use of the RTLD_FIRST flag indicates that only the first 21428af2c5b9Srie * dependency on the handle (the new object) can be used 21438af2c5b9Srie * to satisfy dlsym() requests. 21448af2c5b9Srie */ 21457c478bd9Sstevel@tonic-gate if (nmode & RTLD_FIRST) 21468af2c5b9Srie hflags = GPH_FIRST; 21478af2c5b9Srie 21488af2c5b9Srie /* 21498af2c5b9Srie * Establish the flags for this callers dependency descriptor 21508af2c5b9Srie * (Grp_desc). 21518af2c5b9Srie * 21528af2c5b9Srie * . The creation of a handle associated a descriptor for the 21538af2c5b9Srie * new object and descriptor for the parent (caller). 21548af2c5b9Srie * Typically, the handle is created for dlopen() or for 21558af2c5b9Srie * filtering. A handle may also be created to promote 21568af2c5b9Srie * the callers modes (RTLD_NOW) to the new object. In this 21578af2c5b9Srie * latter case, the handle/descriptor are torn down once 21588af2c5b9Srie * the mode propagation has occurred. 21598af2c5b9Srie * 21608af2c5b9Srie * . Use of the RTLD_PARENT flag indicates that the parent 21618af2c5b9Srie * can be relocated against. 21628af2c5b9Srie */ 21638af2c5b9Srie if (((FLAGS(nlmp) | flags) & FLG_RT_HANDLE) == 0) 21648af2c5b9Srie cdflags = GPD_PROMOTE; 21658af2c5b9Srie else 21668af2c5b9Srie cdflags = GPD_PARENT; 21678af2c5b9Srie if (nmode & RTLD_PARENT) 21688af2c5b9Srie cdflags |= GPD_RELOC; 21697c478bd9Sstevel@tonic-gate 21707c478bd9Sstevel@tonic-gate /* 21717c478bd9Sstevel@tonic-gate * Now that a handle is being created, remove this state from 21727c478bd9Sstevel@tonic-gate * the object so that it doesn't mistakenly get inherited by 21737c478bd9Sstevel@tonic-gate * a dependency. 21747c478bd9Sstevel@tonic-gate */ 21757c478bd9Sstevel@tonic-gate oflags = FLAGS(nlmp); 21767c478bd9Sstevel@tonic-gate FLAGS(nlmp) &= ~FLG_RT_HANDLE; 21777c478bd9Sstevel@tonic-gate 21788af2c5b9Srie DBG_CALL(Dbg_file_hdl_title(DBG_HDL_ADD)); 21798af2c5b9Srie if ((ghp = hdl_create(lml, nlmp, clmp, hflags, 21808af2c5b9Srie (GPD_DLSYM | GPD_RELOC | GPD_ADDEPS), cdflags)) == 0) 21817c478bd9Sstevel@tonic-gate return (0); 21827c478bd9Sstevel@tonic-gate 21837c478bd9Sstevel@tonic-gate /* 21847c478bd9Sstevel@tonic-gate * Add any dependencies that are already loaded, to the handle. 21857c478bd9Sstevel@tonic-gate */ 218602ca3e02Srie if (hdl_initialize(ghp, nlmp, nmode, promote) == 0) 21877c478bd9Sstevel@tonic-gate return (0); 21887c478bd9Sstevel@tonic-gate 21897c478bd9Sstevel@tonic-gate if (hdl) 21907c478bd9Sstevel@tonic-gate *hdl = ghp; 21917c478bd9Sstevel@tonic-gate 21927c478bd9Sstevel@tonic-gate /* 21938af2c5b9Srie * If we were asked to create a handle, we're done. 21947c478bd9Sstevel@tonic-gate */ 21957c478bd9Sstevel@tonic-gate if ((oflags | flags) & FLG_RT_HANDLE) 21967c478bd9Sstevel@tonic-gate return (1); 21977c478bd9Sstevel@tonic-gate 21988af2c5b9Srie /* 21998af2c5b9Srie * If the handle was created to promote modes from the parent 22008af2c5b9Srie * (caller) to the new object, then this relationship needs to 22018af2c5b9Srie * be removed to ensure the handle doesn't prevent the new 22028af2c5b9Srie * objects from being deleted if required. If the parent is 22038af2c5b9Srie * the only dependency on the handle, then the handle can be 22048af2c5b9Srie * completely removed. However, the handle may have already 22058af2c5b9Srie * existed, in which case only the parent descriptor can be 22068af2c5b9Srie * deleted from the handle, or at least the GPD_PROMOTE flag 22078af2c5b9Srie * removed from the descriptor. 22088af2c5b9Srie * 22098af2c5b9Srie * Fall through to carry out any group processing. 22108af2c5b9Srie */ 22118af2c5b9Srie free_hdl(ghp, clmp, GPD_PROMOTE); 22127c478bd9Sstevel@tonic-gate } 22137c478bd9Sstevel@tonic-gate 22147c478bd9Sstevel@tonic-gate /* 22157c478bd9Sstevel@tonic-gate * If the caller isn't part of a group we're done. 22167c478bd9Sstevel@tonic-gate */ 2217cce0e03bSab196087 if (GROUPS(clmp) == NULL) 22187c478bd9Sstevel@tonic-gate return (1); 22197c478bd9Sstevel@tonic-gate 22207c478bd9Sstevel@tonic-gate /* 22217c478bd9Sstevel@tonic-gate * Determine if our caller is already associated with a handle, if so 22227c478bd9Sstevel@tonic-gate * we need to add this object to any handles that already exist. 22237c478bd9Sstevel@tonic-gate * Traverse the list of groups our caller is a member of and add this 22247c478bd9Sstevel@tonic-gate * new link-map to those groups. 22257c478bd9Sstevel@tonic-gate */ 22268af2c5b9Srie DBG_CALL(Dbg_file_hdl_title(DBG_HDL_ADD)); 2227cce0e03bSab196087 for (APLIST_TRAVERSE(GROUPS(clmp), idx, ghp)) { 2228cce0e03bSab196087 Aliste idx1; 22297c478bd9Sstevel@tonic-gate Grp_desc *gdp; 22307c478bd9Sstevel@tonic-gate int exist; 2231cce0e03bSab196087 Rt_map *dlmp1; 2232cce0e03bSab196087 APlist *lmalp = NULL; 22337c478bd9Sstevel@tonic-gate 22347c478bd9Sstevel@tonic-gate /* 22357c478bd9Sstevel@tonic-gate * If the caller doesn't indicate that its dependencies should 22367c478bd9Sstevel@tonic-gate * be added to a handle, ignore it. This case identifies a 22377c478bd9Sstevel@tonic-gate * parent of a dlopen(RTLD_PARENT) request. 22387c478bd9Sstevel@tonic-gate */ 2239cce0e03bSab196087 for (ALIST_TRAVERSE(ghp->gh_depends, idx1, gdp)) { 22407c478bd9Sstevel@tonic-gate if (gdp->gd_depend == clmp) 22417c478bd9Sstevel@tonic-gate break; 22427c478bd9Sstevel@tonic-gate } 22437c478bd9Sstevel@tonic-gate if ((gdp->gd_flags & GPD_ADDEPS) == 0) 22447c478bd9Sstevel@tonic-gate continue; 22457c478bd9Sstevel@tonic-gate 22467c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, nlmp, 2247efb9e8b8Srie (GPD_DLSYM | GPD_RELOC | GPD_ADDEPS))) == 0) 22487c478bd9Sstevel@tonic-gate return (0); 22497c478bd9Sstevel@tonic-gate 22507c478bd9Sstevel@tonic-gate /* 22517c478bd9Sstevel@tonic-gate * If this member already exists then its dependencies will 22527c478bd9Sstevel@tonic-gate * have already been processed. 22537c478bd9Sstevel@tonic-gate */ 22547c478bd9Sstevel@tonic-gate if (exist == ALE_EXISTS) 22557c478bd9Sstevel@tonic-gate continue; 22567c478bd9Sstevel@tonic-gate 22577c478bd9Sstevel@tonic-gate /* 22587c478bd9Sstevel@tonic-gate * If the object we've added has just been opened, it will not 22597c478bd9Sstevel@tonic-gate * yet have been processed for its dependencies, these will be 22607c478bd9Sstevel@tonic-gate * added on later calls to load_one(). If it doesn't have any 22617c478bd9Sstevel@tonic-gate * dependencies we're also done. 22627c478bd9Sstevel@tonic-gate */ 22637c478bd9Sstevel@tonic-gate if (((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) || 2264cce0e03bSab196087 (DEPENDS(nlmp) == NULL)) 22657c478bd9Sstevel@tonic-gate continue; 22667c478bd9Sstevel@tonic-gate 22677c478bd9Sstevel@tonic-gate /* 22687c478bd9Sstevel@tonic-gate * Otherwise, this object exists and has dependencies, so add 22697c478bd9Sstevel@tonic-gate * all of its dependencies to the handle were operating on. 22707c478bd9Sstevel@tonic-gate */ 2271cce0e03bSab196087 if (aplist_append(&lmalp, nlmp, AL_CNT_DEPCLCT) == 0) 22727c478bd9Sstevel@tonic-gate return (0); 22737c478bd9Sstevel@tonic-gate 2274cce0e03bSab196087 for (APLIST_TRAVERSE(lmalp, idx1, dlmp1)) { 2275cce0e03bSab196087 Aliste idx2; 2276cce0e03bSab196087 Bnd_desc *bdp; 22777c478bd9Sstevel@tonic-gate 22787c478bd9Sstevel@tonic-gate /* 22797c478bd9Sstevel@tonic-gate * Add any dependencies of this dependency to the 22807c478bd9Sstevel@tonic-gate * dynamic dependency list so they can be further 22817c478bd9Sstevel@tonic-gate * processed. 22827c478bd9Sstevel@tonic-gate */ 2283cce0e03bSab196087 for (APLIST_TRAVERSE(DEPENDS(dlmp1), idx2, bdp)) { 22847c478bd9Sstevel@tonic-gate Rt_map *dlmp2 = bdp->b_depend; 22857c478bd9Sstevel@tonic-gate 22867c478bd9Sstevel@tonic-gate if ((bdp->b_flags & BND_NEEDED) == 0) 22877c478bd9Sstevel@tonic-gate continue; 22887c478bd9Sstevel@tonic-gate 2289cce0e03bSab196087 if (aplist_test(&lmalp, dlmp2, 22907c478bd9Sstevel@tonic-gate AL_CNT_DEPCLCT) == 0) { 22917c478bd9Sstevel@tonic-gate free(lmalp); 22927c478bd9Sstevel@tonic-gate return (0); 22937c478bd9Sstevel@tonic-gate } 22947c478bd9Sstevel@tonic-gate } 22957c478bd9Sstevel@tonic-gate 22967c478bd9Sstevel@tonic-gate if (nlmp == dlmp1) 22977c478bd9Sstevel@tonic-gate continue; 22987c478bd9Sstevel@tonic-gate 22997c478bd9Sstevel@tonic-gate if ((exist = hdl_add(ghp, dlmp1, 2300efb9e8b8Srie (GPD_DLSYM | GPD_RELOC | GPD_ADDEPS))) != 0) { 23017247f888Srie if (exist == ALE_CREATE) { 23027c478bd9Sstevel@tonic-gate (void) update_mode(dlmp1, MODE(dlmp1), 23037c478bd9Sstevel@tonic-gate nmode); 23047247f888Srie } 23057c478bd9Sstevel@tonic-gate continue; 23067c478bd9Sstevel@tonic-gate } 23077c478bd9Sstevel@tonic-gate free(lmalp); 23087c478bd9Sstevel@tonic-gate return (0); 23097c478bd9Sstevel@tonic-gate } 23107c478bd9Sstevel@tonic-gate free(lmalp); 23117c478bd9Sstevel@tonic-gate } 23127c478bd9Sstevel@tonic-gate return (1); 23137c478bd9Sstevel@tonic-gate } 23147c478bd9Sstevel@tonic-gate 23157c478bd9Sstevel@tonic-gate /* 23167c478bd9Sstevel@tonic-gate * The central routine for loading shared objects. Insures ldd() diagnostics, 23177c478bd9Sstevel@tonic-gate * handles and any other related additions are all done in one place. 23187c478bd9Sstevel@tonic-gate */ 2319fb1354edSrie static Rt_map * 23207247f888Srie _load_path(Lm_list *lml, Aliste lmco, const char **oname, Rt_map *clmp, 23219aa23310Srie int nmode, uint_t flags, Grp_hdl ** hdl, Fdesc *nfdp, Rej_desc *rej, 23229aa23310Srie int *in_nfavl) 23237c478bd9Sstevel@tonic-gate { 23247c478bd9Sstevel@tonic-gate Rt_map *nlmp; 23257247f888Srie const char *name = *oname; 23267c478bd9Sstevel@tonic-gate 23277c478bd9Sstevel@tonic-gate if ((nmode & RTLD_NOLOAD) == 0) { 23287c478bd9Sstevel@tonic-gate /* 23297c478bd9Sstevel@tonic-gate * If this isn't a noload request attempt to load the file. 23307247f888Srie * Note, the name of the file may be changed by an auditor. 23317c478bd9Sstevel@tonic-gate */ 23327247f888Srie if ((load_trace(lml, oname, clmp)) == 0) 23337c478bd9Sstevel@tonic-gate return (0); 23347c478bd9Sstevel@tonic-gate 23357247f888Srie name = *oname; 23367247f888Srie 23377c478bd9Sstevel@tonic-gate if ((nlmp = load_so(lml, lmco, name, clmp, flags, 23389aa23310Srie nfdp, rej, in_nfavl)) == 0) 23397c478bd9Sstevel@tonic-gate return (0); 23407c478bd9Sstevel@tonic-gate 23417c478bd9Sstevel@tonic-gate /* 23427c478bd9Sstevel@tonic-gate * If we've loaded a library which identifies itself as not 23437c478bd9Sstevel@tonic-gate * being dlopen()'able catch it here. Let non-dlopen()'able 23447c478bd9Sstevel@tonic-gate * objects through under RTLD_CONFGEN as they're only being 23457c478bd9Sstevel@tonic-gate * mapped to be dldump()'ed. 23467c478bd9Sstevel@tonic-gate */ 23477c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_APPLIC) && ((FLAGS(nlmp) & 23487c478bd9Sstevel@tonic-gate (FLG_RT_NOOPEN | FLG_RT_RELOCED)) == FLG_RT_NOOPEN) && 23497c478bd9Sstevel@tonic-gate ((nmode & RTLD_CONFGEN) == 0)) { 23507c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 23517c478bd9Sstevel@tonic-gate 23527c478bd9Sstevel@tonic-gate _rej.rej_name = name; 23537c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 23547c478bd9Sstevel@tonic-gate _rej.rej_str = MSG_INTL(MSG_GEN_NOOPEN); 2355ba2be530Sab196087 DBG_CALL(Dbg_file_rejected(lml, &_rej, M_MACH)); 235631fdd7caSab196087 rejection_inherit(rej, &_rej); 23577c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 23587c478bd9Sstevel@tonic-gate return (0); 23597c478bd9Sstevel@tonic-gate } 23607c478bd9Sstevel@tonic-gate } else { 23617c478bd9Sstevel@tonic-gate /* 23627c478bd9Sstevel@tonic-gate * If it's a NOLOAD request - check to see if the object 23637c478bd9Sstevel@tonic-gate * has already been loaded. 23647c478bd9Sstevel@tonic-gate */ 23657c478bd9Sstevel@tonic-gate /* LINTED */ 23669aa23310Srie if (nlmp = is_so_loaded(lml, name, in_nfavl)) { 23677c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_TRC_VERBOSE) && 23687c478bd9Sstevel@tonic-gate ((FLAGS1(clmp) & FL1_RT_LDDSTUB) == 0)) { 23697c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_FIL_FIND), name, 23707c478bd9Sstevel@tonic-gate NAME(clmp)); 23717247f888Srie /* BEGIN CSTYLED */ 23727c478bd9Sstevel@tonic-gate if (*name == '/') 23737c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_PATH), 23747c478bd9Sstevel@tonic-gate name, MSG_ORIG(MSG_STR_EMPTY), 23757c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 23767c478bd9Sstevel@tonic-gate else 23777c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_LDD_FIL_EQUIV), 23787c478bd9Sstevel@tonic-gate name, NAME(nlmp), 23797c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY), 23807c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY)); 23817247f888Srie /* END CSTYLED */ 23827c478bd9Sstevel@tonic-gate } 23837c478bd9Sstevel@tonic-gate } else { 23847c478bd9Sstevel@tonic-gate Rej_desc _rej = { 0 }; 23857c478bd9Sstevel@tonic-gate 23867c478bd9Sstevel@tonic-gate _rej.rej_name = name; 23877c478bd9Sstevel@tonic-gate _rej.rej_type = SGS_REJ_STR; 23887c478bd9Sstevel@tonic-gate _rej.rej_str = strerror(ENOENT); 2389ba2be530Sab196087 DBG_CALL(Dbg_file_rejected(lml, &_rej, M_MACH)); 239031fdd7caSab196087 rejection_inherit(rej, &_rej); 23917c478bd9Sstevel@tonic-gate return (0); 23927c478bd9Sstevel@tonic-gate } 23937c478bd9Sstevel@tonic-gate } 23947c478bd9Sstevel@tonic-gate 23957c478bd9Sstevel@tonic-gate /* 23967c478bd9Sstevel@tonic-gate * Finish processing this loaded object. 23977c478bd9Sstevel@tonic-gate */ 2398390b98b5Srie if (load_finish(lml, name, clmp, nmode, flags, hdl, nlmp) == 0) { 2399390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 24007c478bd9Sstevel@tonic-gate 24017c478bd9Sstevel@tonic-gate /* 2402390b98b5Srie * If this object has already been analyzed, then it is in use, 2403390b98b5Srie * so even though this operation has failed, it should not be 2404390b98b5Srie * torn down. 24057c478bd9Sstevel@tonic-gate */ 24067c478bd9Sstevel@tonic-gate if ((FLAGS(nlmp) & FLG_RT_ANALYZED) == 0) 24077c478bd9Sstevel@tonic-gate remove_so(lml, nlmp); 24087c478bd9Sstevel@tonic-gate return (0); 24097c478bd9Sstevel@tonic-gate } 24107c478bd9Sstevel@tonic-gate 24117c478bd9Sstevel@tonic-gate /* 2412390b98b5Srie * If this object is new, and we're being audited, tell the audit 2413390b98b5Srie * library of the file we've just opened. Note, if the new link-map 2414390b98b5Srie * requires local auditing of its dependencies we also register its 2415390b98b5Srie * opening. 2416390b98b5Srie */ 2417390b98b5Srie if (FLAGS(nlmp) & FLG_RT_NEWLOAD) { 2418390b98b5Srie FLAGS(nlmp) &= ~FLG_RT_NEWLOAD; 2419390b98b5Srie 2420390b98b5Srie if (((lml->lm_tflags | FLAGS1(clmp) | FLAGS1(nlmp)) & 2421390b98b5Srie LML_TFLG_AUD_MASK) && (((lml->lm_flags | 2422390b98b5Srie LIST(clmp)->lm_flags) & LML_FLG_NOAUDIT) == 0)) { 2423390b98b5Srie if (audit_objopen(clmp, nlmp) == 0) { 2424390b98b5Srie remove_so(lml, nlmp); 2425390b98b5Srie return (0); 2426390b98b5Srie } 2427390b98b5Srie } 2428390b98b5Srie } 2429390b98b5Srie return (nlmp); 2430390b98b5Srie } 2431390b98b5Srie 2432fb1354edSrie Rt_map * 24339aa23310Srie load_path(Lm_list *lml, Aliste lmco, const char **name, Rt_map *clmp, int nmode, 24349aa23310Srie uint_t flags, Grp_hdl **hdl, Fdesc *cfdp, Rej_desc *rej, int *in_nfavl) 2435fb1354edSrie { 2436fb1354edSrie Rt_map *lmp; 2437fb1354edSrie Fdesc nfdp = { 0 }; 2438fb1354edSrie 2439fb1354edSrie /* 2440fb1354edSrie * If this path resulted from a $HWCAP specification, then the best 2441fb1354edSrie * hardware capability object has already been establish, and is 2442fb1354edSrie * available in the calling file descriptor. 2443fb1354edSrie */ 2444fb1354edSrie if (flags & FLG_RT_HWCAP) { 2445fb1354edSrie if (cfdp->fd_lmp == 0) { 2446fb1354edSrie /* 2447fb1354edSrie * If this object hasn't yet been mapped, re-establish 2448fb1354edSrie * the file descriptor structure to reflect this objects 2449fb1354edSrie * original initial page mapping. Make sure any present 2450fb1354edSrie * file descriptor mapping is removed before overwriting 2451fb1354edSrie * the structure. 2452fb1354edSrie */ 2453fb1354edSrie #if defined(MAP_ALIGN) 2454fb1354edSrie if (fmap->fm_maddr && 2455fb1354edSrie ((fmap->fm_mflags & MAP_ALIGN) == 0)) 2456fb1354edSrie #else 2457fb1354edSrie if (fmap->fm_maddr) 2458fb1354edSrie #endif 2459fb1354edSrie (void) munmap(fmap->fm_maddr, fmap->fm_msize); 246046d4d531Srie 246146d4d531Srie *fmap = cfdp->fd_fmap; 2462fb1354edSrie } 2463fb1354edSrie nfdp = *cfdp; 2464fb1354edSrie } 2465fb1354edSrie 24669aa23310Srie lmp = _load_path(lml, lmco, name, clmp, nmode, flags, hdl, &nfdp, 24679aa23310Srie rej, in_nfavl); 2468fb1354edSrie 2469fb1354edSrie /* 2470fb1354edSrie * If this path originated from a $HWCAP specification, re-establish the 2471fb1354edSrie * fdesc information. For single paged objects, such as filters, the 2472fb1354edSrie * original mapping may have been sufficient to capture the file, thus 2473fb1354edSrie * this mapping needs to be reset to insure it doesn't mistakenly get 2474fb1354edSrie * unmapped as part of HWCAP cleanup. 2475fb1354edSrie */ 247646d4d531Srie if ((flags & FLG_RT_HWCAP) && (cfdp->fd_lmp == 0)) { 2477fb1354edSrie cfdp->fd_fmap.fm_maddr = fmap->fm_maddr; 2478fb1354edSrie cfdp->fd_fmap.fm_mflags = fmap->fm_mflags; 2479fb1354edSrie cfdp->fd_fd = nfdp.fd_fd; 2480fb1354edSrie } 2481fb1354edSrie 2482fb1354edSrie return (lmp); 2483fb1354edSrie } 2484fb1354edSrie 2485390b98b5Srie /* 24867c478bd9Sstevel@tonic-gate * Load one object from a possible list of objects. Typically, for requests 24877c478bd9Sstevel@tonic-gate * such as NEEDED's, only one object is specified. However, this object could 24887c478bd9Sstevel@tonic-gate * be specified using $ISALIST or $HWCAP, in which case only the first object 24897c478bd9Sstevel@tonic-gate * that can be loaded is used (ie. the best). 24907c478bd9Sstevel@tonic-gate */ 24917c478bd9Sstevel@tonic-gate Rt_map * 24927c478bd9Sstevel@tonic-gate load_one(Lm_list *lml, Aliste lmco, Pnode *pnp, Rt_map *clmp, int mode, 24939aa23310Srie uint_t flags, Grp_hdl **hdl, int *in_nfavl) 24947c478bd9Sstevel@tonic-gate { 24957c478bd9Sstevel@tonic-gate Rej_desc rej = { 0 }; 24967c478bd9Sstevel@tonic-gate Pnode *tpnp; 24977c478bd9Sstevel@tonic-gate const char *name; 24987c478bd9Sstevel@tonic-gate 24997c478bd9Sstevel@tonic-gate for (tpnp = pnp; tpnp && tpnp->p_name; tpnp = tpnp->p_next) { 25007247f888Srie Rt_map *tlmp; 25017247f888Srie 25027c478bd9Sstevel@tonic-gate /* 25037c478bd9Sstevel@tonic-gate * A Hardware capabilities requirement can itself expand into 25047c478bd9Sstevel@tonic-gate * a number of candidates. 25057c478bd9Sstevel@tonic-gate */ 25067c478bd9Sstevel@tonic-gate if (tpnp->p_orig & PN_TKN_HWCAP) { 25077c478bd9Sstevel@tonic-gate if ((tlmp = load_hwcap(lml, lmco, tpnp->p_name, clmp, 25089aa23310Srie mode, (flags | FLG_RT_HWCAP), hdl, &rej, 25099aa23310Srie in_nfavl)) != 0) { 25107c478bd9Sstevel@tonic-gate remove_rej(&rej); 25117c478bd9Sstevel@tonic-gate return (tlmp); 25127c478bd9Sstevel@tonic-gate } 25137c478bd9Sstevel@tonic-gate } else { 25147247f888Srie if ((tlmp = load_path(lml, lmco, &tpnp->p_name, clmp, 25159aa23310Srie mode, flags, hdl, 0, &rej, in_nfavl)) != 0) { 25167c478bd9Sstevel@tonic-gate remove_rej(&rej); 25177c478bd9Sstevel@tonic-gate return (tlmp); 25187c478bd9Sstevel@tonic-gate } 25197c478bd9Sstevel@tonic-gate } 25207c478bd9Sstevel@tonic-gate } 25217c478bd9Sstevel@tonic-gate 25227c478bd9Sstevel@tonic-gate /* 25237c478bd9Sstevel@tonic-gate * If this pathname originated from an expanded token, use the original 25247c478bd9Sstevel@tonic-gate * for any diagnostic output. 25257c478bd9Sstevel@tonic-gate */ 25267c478bd9Sstevel@tonic-gate if ((name = pnp->p_oname) == 0) 25277c478bd9Sstevel@tonic-gate name = pnp->p_name; 25287c478bd9Sstevel@tonic-gate 25297c478bd9Sstevel@tonic-gate file_notfound(lml, name, clmp, flags, &rej); 25307c478bd9Sstevel@tonic-gate remove_rej(&rej); 25317c478bd9Sstevel@tonic-gate return (0); 25327c478bd9Sstevel@tonic-gate } 25337c478bd9Sstevel@tonic-gate 25347c478bd9Sstevel@tonic-gate /* 25359a411307Srie * Determine whether a symbol is defined as an interposer. 25369a411307Srie */ 25379a411307Srie int 25389a411307Srie is_sym_interposer(Rt_map *lmp, Sym *sym) 25399a411307Srie { 25409a411307Srie Syminfo *sip = SYMINFO(lmp); 25419a411307Srie 25429a411307Srie if (sip) { 25439a411307Srie ulong_t ndx; 25449a411307Srie 25459a411307Srie ndx = (((ulong_t)sym - (ulong_t)SYMTAB(lmp)) / SYMENT(lmp)); 25469a411307Srie /* LINTED */ 25479a411307Srie sip = (Syminfo *)((char *)sip + (ndx * SYMINENT(lmp))); 25489a411307Srie if (sip->si_flags & SYMINFO_FLG_INTERPOSE) 25499a411307Srie return (1); 25509a411307Srie } 25519a411307Srie return (0); 25529a411307Srie } 25539a411307Srie 25549a411307Srie /* 25557c478bd9Sstevel@tonic-gate * While processing direct or group bindings, determine whether the object to 25567c478bd9Sstevel@tonic-gate * which we've bound can be interposed upon. In this context, copy relocations 25577c478bd9Sstevel@tonic-gate * are a form of interposition. 25587c478bd9Sstevel@tonic-gate */ 25597c478bd9Sstevel@tonic-gate static Sym * 25607c478bd9Sstevel@tonic-gate lookup_sym_interpose(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Lm_list *lml, 25619aa23310Srie Sym *osym, int *in_nfavl) 25627c478bd9Sstevel@tonic-gate { 25637c478bd9Sstevel@tonic-gate Rt_map *lmp; 25647c478bd9Sstevel@tonic-gate Slookup sl; 25657c478bd9Sstevel@tonic-gate 25667c478bd9Sstevel@tonic-gate /* 25677c478bd9Sstevel@tonic-gate * If we've bound to a copy relocation definition then we need to assign 25687c478bd9Sstevel@tonic-gate * this binding to the original copy reference. Fabricate an inter- 25697c478bd9Sstevel@tonic-gate * position diagnostic, as this is a legitimate form of interposition. 25707c478bd9Sstevel@tonic-gate */ 25717c478bd9Sstevel@tonic-gate if (FLAGS1(*dlmp) & FL1_RT_COPYTOOK) { 25727c478bd9Sstevel@tonic-gate Rel_copy *rcp; 2573cce0e03bSab196087 Aliste idx; 25747c478bd9Sstevel@tonic-gate 2575cce0e03bSab196087 for (ALIST_TRAVERSE(COPY_R(*dlmp), idx, rcp)) { 2576aa736cbeSrie if ((osym == rcp->r_dsym) || (osym->st_value && 2577aa736cbeSrie (osym->st_value == rcp->r_dsym->st_value))) { 25787c478bd9Sstevel@tonic-gate *dlmp = rcp->r_rlmp; 25797c478bd9Sstevel@tonic-gate *binfo |= 25807c478bd9Sstevel@tonic-gate (DBG_BINFO_INTERPOSE | DBG_BINFO_COPYREF); 25817c478bd9Sstevel@tonic-gate return (rcp->r_rsym); 25827c478bd9Sstevel@tonic-gate } 25837c478bd9Sstevel@tonic-gate } 25847c478bd9Sstevel@tonic-gate } 25857c478bd9Sstevel@tonic-gate 2586aa736cbeSrie /* 2587aa736cbeSrie * Prior to Solaris 8, external references from an executable that were 2588aa736cbeSrie * bound to an uninitialized variable (.bss) within a shared object did 2589aa736cbeSrie * not establish a copy relocation. This was thought to be an 2590aa736cbeSrie * optimization, to prevent copying zero's to zero's. Typically, 2591aa736cbeSrie * interposition took its course, with the shared object binding to the 2592aa736cbeSrie * executables data definition. 2593aa736cbeSrie * 2594aa736cbeSrie * This scenario can be broken when this old executable runs against a 2595aa736cbeSrie * new shared object that is directly bound. With no copy-relocation 2596aa736cbeSrie * record, ld.so.1 has no data to trigger the normal vectoring of the 2597aa736cbeSrie * binding to the executable. 2598aa736cbeSrie * 2599aa736cbeSrie * Starting with Solaris 8, a DT_FLAGS entry is written to all objects, 2600aa736cbeSrie * regardless of there being any DF_ flags entries. Therefore, an 2601aa736cbeSrie * object without this dynamic tag is susceptible to the copy relocation 2602aa736cbeSrie * issue. If the executable has no DT_FLAGS tag, and contains the same 2603aa736cbeSrie * .bss symbol definition as has been directly bound to, redirect the 2604aa736cbeSrie * binding to the executables data definition. 2605aa736cbeSrie */ 2606aa736cbeSrie lmp = lml->lm_head; 2607aa736cbeSrie sl = *slp; 2608aa736cbeSrie sl.sl_imap = lmp; 2609466e2a62Srie 2610466e2a62Srie if (((FLAGS2(lmp) & FL2_RT_DTFLAGS) == 0) && (FCT(lmp) == &elf_fct) && 2611466e2a62Srie (ELF_ST_TYPE(osym->st_info) != STT_FUNC) && 2612466e2a62Srie are_bits_zero(*dlmp, osym, 0)) { 2613aa736cbeSrie Rt_map *ilmp; 2614aa736cbeSrie Sym *isym; 2615aa736cbeSrie 2616aa736cbeSrie /* 2617aa736cbeSrie * Determine whether the same symbol name exists within the 2618aa736cbeSrie * executable, that the size and type of symbol are the same, 2619aa736cbeSrie * and that the symbol is also associated with .bss. 2620aa736cbeSrie */ 26219aa23310Srie if (((isym = SYMINTP(lmp)(&sl, &ilmp, binfo, 26229aa23310Srie in_nfavl)) != NULL) && (isym->st_size == osym->st_size) && 2623aa736cbeSrie (isym->st_info == osym->st_info) && 2624466e2a62Srie are_bits_zero(lmp, isym, 1)) { 2625aa736cbeSrie *dlmp = lmp; 2626aa736cbeSrie *binfo |= (DBG_BINFO_INTERPOSE | DBG_BINFO_COPYREF); 2627aa736cbeSrie return (isym); 2628aa736cbeSrie } 2629aa736cbeSrie } 2630aa736cbeSrie 26317c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_INTRPOSE) == 0) 26327c478bd9Sstevel@tonic-gate return ((Sym *)0); 26337c478bd9Sstevel@tonic-gate 26347c478bd9Sstevel@tonic-gate /* 26357c478bd9Sstevel@tonic-gate * Traverse the list of known interposers to determine whether any 26367c478bd9Sstevel@tonic-gate * offer the same symbol. Note, the head of the link-map could be 2637aa736cbeSrie * identified as an interposer. Otherwise, skip the head of the 2638aa736cbeSrie * link-map, so that we don't bind to any .plt references, or 2639aa736cbeSrie * copy-relocation destinations unintentionally. 26407c478bd9Sstevel@tonic-gate */ 26417c478bd9Sstevel@tonic-gate lmp = lml->lm_head; 26427c478bd9Sstevel@tonic-gate sl = *slp; 26439a411307Srie if (((FLAGS(lmp) & MSK_RT_INTPOSE) == 0) || (sl.sl_flags & LKUP_COPY)) 26447c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(lmp); 26457c478bd9Sstevel@tonic-gate 26467c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 26477c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_DELETE) 26487c478bd9Sstevel@tonic-gate continue; 26499a411307Srie if ((FLAGS(lmp) & MSK_RT_INTPOSE) == 0) 26507c478bd9Sstevel@tonic-gate break; 26517c478bd9Sstevel@tonic-gate 265260758829Srie if (callable(lmp, *dlmp, 0, sl.sl_flags)) { 26539a411307Srie Rt_map *ilmp; 2654aa736cbeSrie Sym *isym; 26559a411307Srie 26567c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 26579aa23310Srie if (isym = SYMINTP(lmp)(&sl, &ilmp, binfo, in_nfavl)) { 26589a411307Srie /* 26599a411307Srie * If this object provides individual symbol 26609a411307Srie * interposers, make sure that the symbol we 26619a411307Srie * have found is tagged as an interposer. 26629a411307Srie */ 26639a411307Srie if ((FLAGS(ilmp) & FLG_RT_SYMINTPO) && 2664aa736cbeSrie (is_sym_interposer(ilmp, isym) == 0)) 26659a411307Srie continue; 26669a411307Srie 26679a411307Srie /* 26689a411307Srie * Indicate this binding has occurred to an 26699a411307Srie * interposer, and return the symbol. 26709a411307Srie */ 26717c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_INTERPOSE; 26729a411307Srie *dlmp = ilmp; 2673aa736cbeSrie return (isym); 26747c478bd9Sstevel@tonic-gate } 26757c478bd9Sstevel@tonic-gate } 26767c478bd9Sstevel@tonic-gate } 26777c478bd9Sstevel@tonic-gate return ((Sym *)0); 26787c478bd9Sstevel@tonic-gate } 26797c478bd9Sstevel@tonic-gate 26807c478bd9Sstevel@tonic-gate /* 26817c478bd9Sstevel@tonic-gate * If an object specifies direct bindings (it contains a syminfo structure 26827c478bd9Sstevel@tonic-gate * describing where each binding was established during link-editing, and the 26837c478bd9Sstevel@tonic-gate * object was built -Bdirect), then look for the symbol in the specific object. 26847c478bd9Sstevel@tonic-gate */ 26857c478bd9Sstevel@tonic-gate static Sym * 26867c478bd9Sstevel@tonic-gate lookup_sym_direct(Slookup *slp, Rt_map **dlmp, uint_t *binfo, Syminfo *sip, 26879aa23310Srie Rt_map *lmp, int *in_nfavl) 26887c478bd9Sstevel@tonic-gate { 26897c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 26907c478bd9Sstevel@tonic-gate Sym *sym; 26917c478bd9Sstevel@tonic-gate Slookup sl; 26927c478bd9Sstevel@tonic-gate 26937c478bd9Sstevel@tonic-gate /* 26947c478bd9Sstevel@tonic-gate * If a direct binding resolves to the definition of a copy relocated 26957c478bd9Sstevel@tonic-gate * variable, it must be redirected to the copy (in the executable) that 26967c478bd9Sstevel@tonic-gate * will eventually be made. Typically, this redirection occurs in 26977c478bd9Sstevel@tonic-gate * lookup_sym_interpose(). But, there's an edge condition. If a 26987c478bd9Sstevel@tonic-gate * directly bound executable contains pic code, there may be a 26997c478bd9Sstevel@tonic-gate * reference to a definition that will eventually have a copy made. 27007c478bd9Sstevel@tonic-gate * However, this copy relocation may not yet have occurred, because 27017c478bd9Sstevel@tonic-gate * the relocation making this reference comes before the relocation 27027c478bd9Sstevel@tonic-gate * that will create the copy. 27037c478bd9Sstevel@tonic-gate * Under direct bindings, the syminfo indicates that a copy will be 27047c478bd9Sstevel@tonic-gate * taken (SYMINFO_FLG_COPY). This can only be set in an executable. 27057c478bd9Sstevel@tonic-gate * Thus, the caller must be the executable, so bind to the destination 27067c478bd9Sstevel@tonic-gate * of the copy within the executable. 27077c478bd9Sstevel@tonic-gate */ 27087c478bd9Sstevel@tonic-gate if (((slp->sl_flags & LKUP_COPY) == 0) && 27097c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_COPY)) { 27107c478bd9Sstevel@tonic-gate 27117c478bd9Sstevel@tonic-gate slp->sl_imap = LIST(clmp)->lm_head; 27129aa23310Srie if (sym = SYMINTP(clmp)(slp, dlmp, binfo, in_nfavl)) 27137c478bd9Sstevel@tonic-gate *binfo |= (DBG_BINFO_DIRECT | DBG_BINFO_COPYREF); 27147c478bd9Sstevel@tonic-gate return (sym); 27157c478bd9Sstevel@tonic-gate } 27167c478bd9Sstevel@tonic-gate 27177c478bd9Sstevel@tonic-gate /* 2718efb9e8b8Srie * If we need to directly bind to our parent, start looking in each 2719efb9e8b8Srie * callers link map. 27207c478bd9Sstevel@tonic-gate */ 27217c478bd9Sstevel@tonic-gate sl = *slp; 27227c478bd9Sstevel@tonic-gate sl.sl_flags |= LKUP_DIRECT; 27237c478bd9Sstevel@tonic-gate sym = 0; 27247c478bd9Sstevel@tonic-gate 27257c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_PARENT) { 2726cce0e03bSab196087 Aliste idx1; 2727cce0e03bSab196087 Bnd_desc *bdp; 2728cce0e03bSab196087 Grp_hdl *ghp; 27297c478bd9Sstevel@tonic-gate 2730efb9e8b8Srie /* 2731efb9e8b8Srie * Determine the parent of this explicit dependency from its 2732efb9e8b8Srie * CALLERS()'s list. 2733efb9e8b8Srie */ 2734cce0e03bSab196087 for (APLIST_TRAVERSE(CALLERS(clmp), idx1, bdp)) { 2735cce0e03bSab196087 sl.sl_imap = lmp = bdp->b_caller; 27369aa23310Srie if ((sym = SYMINTP(lmp)(&sl, dlmp, binfo, 27379aa23310Srie in_nfavl)) != NULL) 2738efb9e8b8Srie goto found; 2739efb9e8b8Srie } 2740efb9e8b8Srie 2741efb9e8b8Srie /* 2742efb9e8b8Srie * A caller can also be defined as the parent of a dlopen() 2743efb9e8b8Srie * call. Determine whether this object has any handles. The 2744efb9e8b8Srie * dependencies maintained with the handle represent the 2745efb9e8b8Srie * explicit dependencies of the dlopen()'ed object, and the 2746efb9e8b8Srie * calling parent. 2747efb9e8b8Srie */ 2748cce0e03bSab196087 for (APLIST_TRAVERSE(HANDLES(clmp), idx1, ghp)) { 2749efb9e8b8Srie Grp_desc *gdp; 2750cce0e03bSab196087 Aliste idx2; 2751efb9e8b8Srie 2752cce0e03bSab196087 for (ALIST_TRAVERSE(ghp->gh_depends, idx2, gdp)) { 2753efb9e8b8Srie if ((gdp->gd_flags & GPD_PARENT) == 0) 2754efb9e8b8Srie continue; 2755efb9e8b8Srie sl.sl_imap = lmp = gdp->gd_depend; 2756aa736cbeSrie if ((sym = SYMINTP(lmp)(&sl, dlmp, 27579aa23310Srie binfo, in_nfavl)) != NULL) 2758efb9e8b8Srie goto found; 2759efb9e8b8Srie } 27607c478bd9Sstevel@tonic-gate } 27617c478bd9Sstevel@tonic-gate } else { 27627c478bd9Sstevel@tonic-gate /* 27637c478bd9Sstevel@tonic-gate * If we need to direct bind to anything else look in the 27647c478bd9Sstevel@tonic-gate * link map associated with this symbol reference. 27657c478bd9Sstevel@tonic-gate */ 27667c478bd9Sstevel@tonic-gate if (sip->si_boundto == SYMINFO_BT_SELF) 27677c478bd9Sstevel@tonic-gate sl.sl_imap = lmp = clmp; 27687c478bd9Sstevel@tonic-gate else 27697c478bd9Sstevel@tonic-gate sl.sl_imap = lmp; 27707c478bd9Sstevel@tonic-gate 27717c478bd9Sstevel@tonic-gate if (lmp) 27729aa23310Srie sym = SYMINTP(lmp)(&sl, dlmp, binfo, in_nfavl); 27737c478bd9Sstevel@tonic-gate } 2774efb9e8b8Srie found: 27757c478bd9Sstevel@tonic-gate if (sym) 27767c478bd9Sstevel@tonic-gate *binfo |= DBG_BINFO_DIRECT; 27777c478bd9Sstevel@tonic-gate 27787c478bd9Sstevel@tonic-gate /* 27797c478bd9Sstevel@tonic-gate * If we've bound to an object, determine whether that object can be 27807c478bd9Sstevel@tonic-gate * interposed upon for this symbol. 27817c478bd9Sstevel@tonic-gate */ 27827c478bd9Sstevel@tonic-gate if (sym && (LIST(*dlmp)->lm_head != *dlmp) && 27837c478bd9Sstevel@tonic-gate (LIST(*dlmp) == LIST(clmp))) { 27847c478bd9Sstevel@tonic-gate Sym *isym; 27857c478bd9Sstevel@tonic-gate 27867c478bd9Sstevel@tonic-gate if ((isym = lookup_sym_interpose(slp, dlmp, binfo, 27879aa23310Srie LIST(*dlmp), sym, in_nfavl)) != 0) 27887c478bd9Sstevel@tonic-gate return (isym); 27897c478bd9Sstevel@tonic-gate } 27907c478bd9Sstevel@tonic-gate 27917c478bd9Sstevel@tonic-gate return (sym); 27927c478bd9Sstevel@tonic-gate } 27937c478bd9Sstevel@tonic-gate 27947c478bd9Sstevel@tonic-gate static Sym * 279560758829Srie core_lookup_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo, 27969aa23310Srie Aliste off, int *in_nfavl) 27977c478bd9Sstevel@tonic-gate { 27987c478bd9Sstevel@tonic-gate Rt_map *lmp; 27997c478bd9Sstevel@tonic-gate 28007c478bd9Sstevel@tonic-gate /* 28017c478bd9Sstevel@tonic-gate * Copy relocations should start their search after the head of the 28027c478bd9Sstevel@tonic-gate * main link-map control list. 28037c478bd9Sstevel@tonic-gate */ 2804cce0e03bSab196087 if ((off == ALIST_OFF_DATA) && (slp->sl_flags & LKUP_COPY) && ilmp) 28057c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(ilmp); 28067c478bd9Sstevel@tonic-gate else 28077c478bd9Sstevel@tonic-gate lmp = ilmp; 28087c478bd9Sstevel@tonic-gate 28097c478bd9Sstevel@tonic-gate for (; lmp; lmp = (Rt_map *)NEXT(lmp)) { 281060758829Srie if (callable(slp->sl_cmap, lmp, 0, slp->sl_flags)) { 28117c478bd9Sstevel@tonic-gate Sym *sym; 28127c478bd9Sstevel@tonic-gate 28137c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 28149aa23310Srie if (((sym = SYMINTP(lmp)(slp, dlmp, binfo, 28159aa23310Srie in_nfavl)) != NULL) || (*binfo & BINFO_REJSINGLE)) 28167c478bd9Sstevel@tonic-gate return (sym); 28177c478bd9Sstevel@tonic-gate } 28187c478bd9Sstevel@tonic-gate } 28197c478bd9Sstevel@tonic-gate return (0); 28207c478bd9Sstevel@tonic-gate } 28217c478bd9Sstevel@tonic-gate 28227c478bd9Sstevel@tonic-gate static Sym * 28239aa23310Srie _lazy_find_sym(Rt_map *ilmp, Slookup *slp, Rt_map **dlmp, uint_t *binfo, 28249aa23310Srie int *in_nfavl) 28257c478bd9Sstevel@tonic-gate { 28267c478bd9Sstevel@tonic-gate Rt_map *lmp; 28277c478bd9Sstevel@tonic-gate 28287c478bd9Sstevel@tonic-gate for (lmp = ilmp; lmp; lmp = (Rt_map *)NEXT(lmp)) { 28297c478bd9Sstevel@tonic-gate if (LAZY(lmp) == 0) 28307c478bd9Sstevel@tonic-gate continue; 283160758829Srie if (callable(slp->sl_cmap, lmp, 0, slp->sl_flags)) { 28327c478bd9Sstevel@tonic-gate Sym *sym; 28337c478bd9Sstevel@tonic-gate 28347c478bd9Sstevel@tonic-gate slp->sl_imap = lmp; 28359aa23310Srie if ((sym = elf_lazy_find_sym(slp, dlmp, binfo, 28369aa23310Srie in_nfavl)) != 0) 28377c478bd9Sstevel@tonic-gate return (sym); 28387c478bd9Sstevel@tonic-gate } 28397c478bd9Sstevel@tonic-gate } 28407c478bd9Sstevel@tonic-gate return (0); 28417c478bd9Sstevel@tonic-gate } 28427c478bd9Sstevel@tonic-gate 284360758829Srie static Sym * 28449aa23310Srie _lookup_sym(Slookup *slp, Rt_map **dlmp, uint_t *binfo, int *in_nfavl) 28457c478bd9Sstevel@tonic-gate { 28467c478bd9Sstevel@tonic-gate const char *name = slp->sl_name; 28477c478bd9Sstevel@tonic-gate Rt_map *clmp = slp->sl_cmap; 2848dae2dfb7Srie Lm_list *lml = LIST(clmp); 28497c478bd9Sstevel@tonic-gate Rt_map *ilmp = slp->sl_imap, *lmp; 28507c478bd9Sstevel@tonic-gate ulong_t rsymndx; 285160758829Srie Sym *sym; 28527c478bd9Sstevel@tonic-gate Syminfo *sip; 28537c478bd9Sstevel@tonic-gate Slookup sl; 28547c478bd9Sstevel@tonic-gate 28557c478bd9Sstevel@tonic-gate /* 28567c478bd9Sstevel@tonic-gate * Search the initial link map for the required symbol (this category is 28577c478bd9Sstevel@tonic-gate * selected by dlsym(), where individual link maps are searched for a 28587c478bd9Sstevel@tonic-gate * required symbol. Therefore, we know we have permission to look at 28597c478bd9Sstevel@tonic-gate * the link map). 28607c478bd9Sstevel@tonic-gate */ 286160758829Srie if (slp->sl_flags & LKUP_FIRST) 28629aa23310Srie return (SYMINTP(ilmp)(slp, dlmp, binfo, in_nfavl)); 28637c478bd9Sstevel@tonic-gate 28647c478bd9Sstevel@tonic-gate /* 28657c478bd9Sstevel@tonic-gate * Determine whether this lookup can be satisfied by an objects direct, 28667c478bd9Sstevel@tonic-gate * or lazy binding information. This is triggered by a relocation from 28677c478bd9Sstevel@tonic-gate * the object (hence rsymndx is set). 28687c478bd9Sstevel@tonic-gate */ 28697c478bd9Sstevel@tonic-gate if (((rsymndx = slp->sl_rsymndx) != 0) && 2870aa736cbeSrie ((sip = SYMINFO(clmp)) != NULL)) { 2871dae2dfb7Srie uint_t bound; 2872dae2dfb7Srie 28737c478bd9Sstevel@tonic-gate /* 28747c478bd9Sstevel@tonic-gate * Find the corresponding Syminfo entry for the original 28757c478bd9Sstevel@tonic-gate * referencing symbol. 28767c478bd9Sstevel@tonic-gate */ 28777c478bd9Sstevel@tonic-gate /* LINTED */ 28787c478bd9Sstevel@tonic-gate sip = (Syminfo *)((char *)sip + (rsymndx * SYMINENT(clmp))); 2879dae2dfb7Srie bound = sip->si_boundto; 2880dae2dfb7Srie 2881dae2dfb7Srie /* 2882dae2dfb7Srie * Identify any EXTERN or PARENT references for ldd(1). 2883dae2dfb7Srie */ 2884dae2dfb7Srie if ((lml->lm_flags & LML_FLG_TRC_WARN) && 2885dae2dfb7Srie (bound > SYMINFO_BT_LOWRESERVE)) { 2886dae2dfb7Srie if (bound == SYMINFO_BT_PARENT) 2887dae2dfb7Srie *binfo |= DBG_BINFO_REF_PARENT; 2888dae2dfb7Srie if (bound == SYMINFO_BT_EXTERN) 2889dae2dfb7Srie *binfo |= DBG_BINFO_REF_EXTERN; 2890dae2dfb7Srie } 28917c478bd9Sstevel@tonic-gate 28927c478bd9Sstevel@tonic-gate /* 28937c478bd9Sstevel@tonic-gate * If the symbol information indicates a direct binding, 28947c478bd9Sstevel@tonic-gate * determine the link map that is required to satisfy the 28957c478bd9Sstevel@tonic-gate * binding. Note, if the dependency can not be found, but a 28967c478bd9Sstevel@tonic-gate * direct binding isn't required, we will still fall through 28977c478bd9Sstevel@tonic-gate * to perform any default symbol search. 28987c478bd9Sstevel@tonic-gate */ 28997c478bd9Sstevel@tonic-gate if (sip->si_flags & SYMINFO_FLG_DIRECT) { 29007c478bd9Sstevel@tonic-gate 29017c478bd9Sstevel@tonic-gate lmp = 0; 29027c478bd9Sstevel@tonic-gate if (bound < SYMINFO_BT_LOWRESERVE) 29039aa23310Srie lmp = elf_lazy_load(clmp, slp, bound, 29049aa23310Srie name, in_nfavl); 29057c478bd9Sstevel@tonic-gate 29067c478bd9Sstevel@tonic-gate /* 29077c478bd9Sstevel@tonic-gate * If direct bindings have been disabled, and this isn't 29087c478bd9Sstevel@tonic-gate * a translator, skip any direct binding now that we've 290960758829Srie * ensured the resolving object has been loaded. 29107c478bd9Sstevel@tonic-gate * 29117c478bd9Sstevel@tonic-gate * If we need to direct bind to anything, we look in 29127c478bd9Sstevel@tonic-gate * ourselves, our parent, or in the link map we've just 29137c478bd9Sstevel@tonic-gate * loaded. Otherwise, even though we may have lazily 29147c478bd9Sstevel@tonic-gate * loaded an object we still continue to search for 29157c478bd9Sstevel@tonic-gate * symbols from the head of the link map list. 29167c478bd9Sstevel@tonic-gate */ 29177c478bd9Sstevel@tonic-gate if (((FLAGS(clmp) & FLG_RT_TRANS) || 2918dae2dfb7Srie (((lml->lm_tflags & LML_TFLG_NODIRECT) == 0) && 2919dae2dfb7Srie ((slp->sl_flags & LKUP_SINGLETON) == 0))) && 29209a411307Srie ((FLAGS1(clmp) & FL1_RT_DIRECT) || 29217c478bd9Sstevel@tonic-gate (sip->si_flags & SYMINFO_FLG_DIRECTBIND))) { 29227c478bd9Sstevel@tonic-gate sym = lookup_sym_direct(slp, dlmp, binfo, 29239aa23310Srie sip, lmp, in_nfavl); 29247c478bd9Sstevel@tonic-gate 29257c478bd9Sstevel@tonic-gate /* 292660758829Srie * Determine whether this direct binding has 292760758829Srie * been rejected. If we've bound to a singleton 292860758829Srie * without following a singleton search, then 292960758829Srie * return. The caller detects this condition 293060758829Srie * and will trigger a new singleton search. 293160758829Srie * 293260758829Srie * For any other rejection (such as binding to 293360758829Srie * a symbol labeled as nodirect - presumably 293460758829Srie * because the symbol definition has been 293560758829Srie * changed since the referring object was last 293660758829Srie * built), fall through to a standard symbol 29377c478bd9Sstevel@tonic-gate * search. 29387c478bd9Sstevel@tonic-gate */ 293960758829Srie if (((*binfo & BINFO_REJECTED) == 0) || 294060758829Srie (*binfo & BINFO_REJSINGLE)) 29417c478bd9Sstevel@tonic-gate return (sym); 294260758829Srie 294360758829Srie *binfo &= ~BINFO_REJECTED; 29447c478bd9Sstevel@tonic-gate } 29457c478bd9Sstevel@tonic-gate } 29467c478bd9Sstevel@tonic-gate } 29477c478bd9Sstevel@tonic-gate 294860758829Srie /* 294960758829Srie * Duplicate the lookup information, as we'll need to modify this 295060758829Srie * information for some of the following searches. 295160758829Srie */ 29527c478bd9Sstevel@tonic-gate sl = *slp; 29537c478bd9Sstevel@tonic-gate 29547c478bd9Sstevel@tonic-gate /* 29557c478bd9Sstevel@tonic-gate * If the referencing object has the DF_SYMBOLIC flag set, look in the 29567c478bd9Sstevel@tonic-gate * referencing object for the symbol first. Failing that, fall back to 29577c478bd9Sstevel@tonic-gate * our generic search. 29587c478bd9Sstevel@tonic-gate */ 295960758829Srie if ((FLAGS1(clmp) & FL1_RT_SYMBOLIC) && 296060758829Srie ((sl.sl_flags & LKUP_SINGLETON) == 0)) { 29617c478bd9Sstevel@tonic-gate sl.sl_imap = clmp; 29629aa23310Srie if (sym = SYMINTP(clmp)(&sl, dlmp, binfo, in_nfavl)) { 29639a411307Srie ulong_t dsymndx = (((ulong_t)sym - 29649a411307Srie (ulong_t)SYMTAB(*dlmp)) / SYMENT(*dlmp)); 29659a411307Srie 29669a411307Srie /* 29679a411307Srie * Make sure this symbol hasn't explicitly been defined 29689a411307Srie * as nodirect. 29699a411307Srie */ 29709a411307Srie if (((sip = SYMINFO(*dlmp)) == 0) || 29719a411307Srie /* LINTED */ 29729a411307Srie ((sip = (Syminfo *)((char *)sip + 29739a411307Srie (dsymndx * SYMINENT(*dlmp)))) == 0) || 29749a411307Srie ((sip->si_flags & SYMINFO_FLG_NOEXTDIRECT) == 0)) 29757c478bd9Sstevel@tonic-gate return (sym); 29767c478bd9Sstevel@tonic-gate } 29779a411307Srie } 29787c478bd9Sstevel@tonic-gate 297960758829Srie sl.sl_flags |= LKUP_STANDARD; 298060758829Srie 29817c478bd9Sstevel@tonic-gate /* 29827c478bd9Sstevel@tonic-gate * If this lookup originates from a standard relocation, then traverse 298360758829Srie * all link-map control lists, inspecting any object that is available 298460758829Srie * to this caller. Otherwise, traverse the link-map control list 298560758829Srie * associated with the caller. 29867c478bd9Sstevel@tonic-gate */ 298760758829Srie if (sl.sl_flags & LKUP_STDRELOC) { 29887c478bd9Sstevel@tonic-gate Aliste off; 29897c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 29907c478bd9Sstevel@tonic-gate 299160758829Srie sym = NULL; 29927c478bd9Sstevel@tonic-gate 2993dae2dfb7Srie for (ALIST_TRAVERSE_BY_OFFSET(lml->lm_lists, off, lmc)) { 299460758829Srie if (((sym = core_lookup_sym(lmc->lc_head, &sl, dlmp, 29959aa23310Srie binfo, off, in_nfavl)) != NULL) || 299660758829Srie (*binfo & BINFO_REJSINGLE)) 29977c478bd9Sstevel@tonic-gate break; 29987c478bd9Sstevel@tonic-gate } 29997c478bd9Sstevel@tonic-gate } else 30009aa23310Srie sym = core_lookup_sym(ilmp, &sl, dlmp, binfo, ALIST_OFF_DATA, 30019aa23310Srie in_nfavl); 300260758829Srie 300360758829Srie /* 300460758829Srie * If a symbol binding was rejected, because a binding occurred to a 300560758829Srie * singleton without following the default symbol search, return so 300660758829Srie * that the search can be repreated. 300760758829Srie */ 300860758829Srie if (*binfo & BINFO_REJSINGLE) 300960758829Srie return (sym); 30107c478bd9Sstevel@tonic-gate 30117c478bd9Sstevel@tonic-gate /* 30127c478bd9Sstevel@tonic-gate * To allow transitioning into a world of lazy loading dependencies see 30137c478bd9Sstevel@tonic-gate * if this link map contains objects that have lazy dependencies still 30147c478bd9Sstevel@tonic-gate * outstanding. If so, and we haven't been able to locate a non-weak 30157c478bd9Sstevel@tonic-gate * symbol reference, start bringing in any lazy dependencies to see if 30167c478bd9Sstevel@tonic-gate * the reference can be satisfied. Use of dlsym(RTLD_PROBE) sets the 301775e7992aSrie * LKUP_NOFALLBACK flag, and this flag disables this fall back. 30187c478bd9Sstevel@tonic-gate */ 301975e7992aSrie if ((sym == NULL) && ((sl.sl_flags & LKUP_NOFALLBACK) == 0)) { 30207c478bd9Sstevel@tonic-gate if ((lmp = ilmp) == 0) 30217c478bd9Sstevel@tonic-gate lmp = LIST(clmp)->lm_head; 302275e7992aSrie 3023dae2dfb7Srie lml = LIST(lmp); 3024dae2dfb7Srie if ((sl.sl_flags & LKUP_WEAK) || (lml->lm_lazy == 0)) 30257c478bd9Sstevel@tonic-gate return ((Sym *)0); 30267c478bd9Sstevel@tonic-gate 3027dae2dfb7Srie DBG_CALL(Dbg_syms_lazy_rescan(lml, name)); 30287c478bd9Sstevel@tonic-gate 30297c478bd9Sstevel@tonic-gate /* 30307c478bd9Sstevel@tonic-gate * If this request originated from a dlsym(RTLD_NEXT) then start 30317c478bd9Sstevel@tonic-gate * looking for dependencies from the caller, otherwise use the 30327c478bd9Sstevel@tonic-gate * initial link-map. 30337c478bd9Sstevel@tonic-gate */ 303460758829Srie if (sl.sl_flags & LKUP_NEXT) 30359aa23310Srie sym = _lazy_find_sym(clmp, &sl, dlmp, binfo, in_nfavl); 30367c478bd9Sstevel@tonic-gate else { 3037cce0e03bSab196087 Aliste idx; 30387c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 30397c478bd9Sstevel@tonic-gate 3040dae2dfb7Srie for (ALIST_TRAVERSE(lml->lm_lists, idx, lmc)) { 304175e7992aSrie sl.sl_flags |= LKUP_NOFALLBACK; 30427c478bd9Sstevel@tonic-gate if ((sym = _lazy_find_sym(lmc->lc_head, &sl, 30439aa23310Srie dlmp, binfo, in_nfavl)) != 0) 30447c478bd9Sstevel@tonic-gate break; 30457c478bd9Sstevel@tonic-gate } 30467c478bd9Sstevel@tonic-gate } 30477c478bd9Sstevel@tonic-gate } 304860758829Srie return (sym); 304960758829Srie } 305060758829Srie 305160758829Srie /* 305260758829Srie * Symbol lookup routine. Takes an ELF symbol name, and a list of link maps to 305360758829Srie * search. If successful, return a pointer to the symbol table entry, a 305460758829Srie * pointer to the link map of the enclosing object, and information relating 305560758829Srie * to the type of binding. Else return a null pointer. 305660758829Srie * 305760758829Srie * To improve elf performance, we first compute the elf hash value and pass 305860758829Srie * it to each find_sym() routine. The elf function will use this value to 305960758829Srie * locate the symbol, the a.out function will simply ignore it. 306060758829Srie */ 306160758829Srie Sym * 30629aa23310Srie lookup_sym(Slookup *slp, Rt_map **dlmp, uint_t *binfo, int *in_nfavl) 306360758829Srie { 306460758829Srie Rt_map *clmp = slp->sl_cmap; 306560758829Srie Sym *rsym = slp->sl_rsym, *sym = 0; 306660758829Srie uchar_t rtype = slp->sl_rtype; 306760758829Srie 306860758829Srie if (slp->sl_hash == 0) 306975e7992aSrie slp->sl_hash = elf_hash(slp->sl_name); 307060758829Srie *binfo = 0; 307160758829Srie 307260758829Srie /* 307360758829Srie * Establish any state that might be associated with a symbol reference. 307460758829Srie */ 307560758829Srie if (rsym) { 307660758829Srie if ((slp->sl_flags & LKUP_STDRELOC) && 307760758829Srie (ELF_ST_BIND(rsym->st_info) == STB_WEAK)) 307860758829Srie slp->sl_flags |= LKUP_WEAK; 307960758829Srie 308060758829Srie if (ELF_ST_VISIBILITY(rsym->st_other) == STV_SINGLETON) 308160758829Srie slp->sl_flags |= LKUP_SINGLETON; 308260758829Srie } 308360758829Srie 308460758829Srie /* 308560758829Srie * Establish any lookup state required for this type of relocation. 308660758829Srie */ 308760758829Srie if ((slp->sl_flags & LKUP_STDRELOC) && rtype) { 308860758829Srie if (rtype == M_R_COPY) 308960758829Srie slp->sl_flags |= LKUP_COPY; 309060758829Srie 309160758829Srie if (rtype != M_R_JMP_SLOT) 309260758829Srie slp->sl_flags |= LKUP_SPEC; 309360758829Srie } 309460758829Srie 309560758829Srie /* 309660758829Srie * Under ldd -w, any unresolved weak references are diagnosed. Set the 309760758829Srie * symbol binding as global to trigger a relocation error if the symbol 309860758829Srie * can not be found. 309960758829Srie */ 310060758829Srie if (rsym) { 310160758829Srie if (LIST(slp->sl_cmap)->lm_flags & LML_FLG_TRC_NOUNRESWEAK) 310260758829Srie slp->sl_bind = STB_GLOBAL; 310360758829Srie else if ((slp->sl_bind = ELF_ST_BIND(rsym->st_info)) == 310460758829Srie STB_WEAK) 310560758829Srie slp->sl_flags |= LKUP_WEAK; 310660758829Srie } 310760758829Srie 310860758829Srie /* 310960758829Srie * Carry out an initial symbol search. This search takes into account 311060758829Srie * all the modes of the requested search. 311160758829Srie */ 31129aa23310Srie if (((sym = _lookup_sym(slp, dlmp, binfo, in_nfavl)) == NULL) && 311360758829Srie (*binfo & BINFO_REJSINGLE)) { 311460758829Srie Slookup sl = *slp; 311560758829Srie 311660758829Srie /* 311760758829Srie * If a binding has been rejected because of binding to a 311860758829Srie * singleton without going through a singleton search, then 311960758829Srie * reset the lookup data, and try again. 312060758829Srie */ 312160758829Srie sl.sl_imap = LIST(sl.sl_cmap)->lm_head; 312260758829Srie sl.sl_flags &= ~(LKUP_FIRST | LKUP_SELF | LKUP_NEXT); 312360758829Srie sl.sl_flags |= LKUP_SINGLETON; 312460758829Srie sl.sl_rsymndx = 0; 312560758829Srie *binfo &= ~BINFO_REJECTED; 31269aa23310Srie sym = _lookup_sym(&sl, dlmp, binfo, in_nfavl); 312760758829Srie } 31287c478bd9Sstevel@tonic-gate 31297c478bd9Sstevel@tonic-gate /* 31307c478bd9Sstevel@tonic-gate * If the caller is restricted to a symbol search within its group, 31317c478bd9Sstevel@tonic-gate * determine if it is necessary to follow a binding from outside of 31327c478bd9Sstevel@tonic-gate * the group. 31337c478bd9Sstevel@tonic-gate */ 31347c478bd9Sstevel@tonic-gate if (sym && ((MODE(clmp) & (RTLD_GROUP | RTLD_WORLD)) == RTLD_GROUP)) { 31357c478bd9Sstevel@tonic-gate Sym *isym; 31367c478bd9Sstevel@tonic-gate 31377c478bd9Sstevel@tonic-gate if ((isym = lookup_sym_interpose(slp, dlmp, binfo, LIST(*dlmp), 31389aa23310Srie sym, in_nfavl)) != 0) 31397c478bd9Sstevel@tonic-gate return (isym); 31407c478bd9Sstevel@tonic-gate } 31417c478bd9Sstevel@tonic-gate return (sym); 31427c478bd9Sstevel@tonic-gate } 31437c478bd9Sstevel@tonic-gate 31447c478bd9Sstevel@tonic-gate /* 31457c478bd9Sstevel@tonic-gate * Associate a binding descriptor with a caller and its dependency, or update 31467c478bd9Sstevel@tonic-gate * an existing descriptor. 31477c478bd9Sstevel@tonic-gate */ 31487c478bd9Sstevel@tonic-gate int 31497c478bd9Sstevel@tonic-gate bind_one(Rt_map *clmp, Rt_map *dlmp, uint_t flags) 31507c478bd9Sstevel@tonic-gate { 3151cce0e03bSab196087 Bnd_desc *bdp; 3152cce0e03bSab196087 Aliste idx; 31537c478bd9Sstevel@tonic-gate int found = ALE_CREATE; 31547c478bd9Sstevel@tonic-gate 31557c478bd9Sstevel@tonic-gate /* 31567c478bd9Sstevel@tonic-gate * Determine whether a binding descriptor already exists between the 31577c478bd9Sstevel@tonic-gate * two objects. 31587c478bd9Sstevel@tonic-gate */ 3159cce0e03bSab196087 for (APLIST_TRAVERSE(DEPENDS(clmp), idx, bdp)) { 31607c478bd9Sstevel@tonic-gate if (bdp->b_depend == dlmp) { 31617c478bd9Sstevel@tonic-gate found = ALE_EXISTS; 31627c478bd9Sstevel@tonic-gate break; 31637c478bd9Sstevel@tonic-gate } 31647c478bd9Sstevel@tonic-gate } 31657c478bd9Sstevel@tonic-gate 31667c478bd9Sstevel@tonic-gate if (found == ALE_CREATE) { 31677c478bd9Sstevel@tonic-gate /* 31687c478bd9Sstevel@tonic-gate * Create a new binding descriptor. 31697c478bd9Sstevel@tonic-gate */ 31707c478bd9Sstevel@tonic-gate if ((bdp = malloc(sizeof (Bnd_desc))) == 0) 31717c478bd9Sstevel@tonic-gate return (0); 31727c478bd9Sstevel@tonic-gate 31737c478bd9Sstevel@tonic-gate bdp->b_caller = clmp; 31747c478bd9Sstevel@tonic-gate bdp->b_depend = dlmp; 31757c478bd9Sstevel@tonic-gate bdp->b_flags = 0; 31767c478bd9Sstevel@tonic-gate 31777c478bd9Sstevel@tonic-gate /* 31787c478bd9Sstevel@tonic-gate * Append the binding descriptor to the caller and the 31797c478bd9Sstevel@tonic-gate * dependency. 31807c478bd9Sstevel@tonic-gate */ 3181cce0e03bSab196087 if (aplist_append(&DEPENDS(clmp), bdp, AL_CNT_DEPENDS) == 0) 31827c478bd9Sstevel@tonic-gate return (0); 31837c478bd9Sstevel@tonic-gate 3184cce0e03bSab196087 if (aplist_append(&CALLERS(dlmp), bdp, AL_CNT_CALLERS) == 0) 31857c478bd9Sstevel@tonic-gate return (0); 31867c478bd9Sstevel@tonic-gate } 31877c478bd9Sstevel@tonic-gate 31887c478bd9Sstevel@tonic-gate if ((found == ALE_CREATE) || ((bdp->b_flags & flags) != flags)) { 31897c478bd9Sstevel@tonic-gate bdp->b_flags |= flags; 31907c478bd9Sstevel@tonic-gate 31917c478bd9Sstevel@tonic-gate if (flags & BND_REFER) 31927c478bd9Sstevel@tonic-gate FLAGS1(dlmp) |= FL1_RT_USED; 31937c478bd9Sstevel@tonic-gate 31945aefb655Srie DBG_CALL(Dbg_file_bind_entry(LIST(clmp), bdp)); 31957c478bd9Sstevel@tonic-gate } 31967c478bd9Sstevel@tonic-gate return (found); 31977c478bd9Sstevel@tonic-gate } 31987c478bd9Sstevel@tonic-gate 31997c478bd9Sstevel@tonic-gate /* 32007c478bd9Sstevel@tonic-gate * Cleanup after relocation processing. 32017c478bd9Sstevel@tonic-gate */ 32027c478bd9Sstevel@tonic-gate int 3203cce0e03bSab196087 relocate_finish(Rt_map *lmp, APlist *bound, int textrel, int ret) 32047c478bd9Sstevel@tonic-gate { 32055aefb655Srie DBG_CALL(Dbg_reloc_run(lmp, 0, ret, DBG_REL_FINISH)); 32067c478bd9Sstevel@tonic-gate 32077c478bd9Sstevel@tonic-gate /* 32087c478bd9Sstevel@tonic-gate * Establish bindings to all objects that have been bound to. 32097c478bd9Sstevel@tonic-gate */ 32107c478bd9Sstevel@tonic-gate if (bound) { 3211cce0e03bSab196087 Aliste idx; 3212cce0e03bSab196087 Rt_map *_lmp; 32138a20d9f8Srie Word used; 32147c478bd9Sstevel@tonic-gate 32158a20d9f8Srie /* 32168a20d9f8Srie * Only create bindings if the callers relocation was 32178a20d9f8Srie * successful (ret != 0), otherwise the object will eventually 32188a20d9f8Srie * be torn down. Create these bindings if running under ldd(1) 32198a20d9f8Srie * with the -U/-u options regardless of relocation errors, as 32208a20d9f8Srie * the unused processing needs to traverse these bindings to 32218a20d9f8Srie * diagnose unused objects. 32228a20d9f8Srie */ 32238a20d9f8Srie used = LIST(lmp)->lm_flags & 32248a20d9f8Srie (LML_FLG_TRC_UNREF | LML_FLG_TRC_UNUSED); 32258a20d9f8Srie 32268a20d9f8Srie if (ret || used) { 3227cce0e03bSab196087 for (APLIST_TRAVERSE(bound, idx, _lmp)) { 32288a20d9f8Srie if (bind_one(lmp, _lmp, BND_REFER) || used) 32298a20d9f8Srie continue; 32308a20d9f8Srie 32317c478bd9Sstevel@tonic-gate ret = 0; 32327c478bd9Sstevel@tonic-gate break; 32337c478bd9Sstevel@tonic-gate } 32347c478bd9Sstevel@tonic-gate } 32357c478bd9Sstevel@tonic-gate free(bound); 32367c478bd9Sstevel@tonic-gate } 32377c478bd9Sstevel@tonic-gate 32387c478bd9Sstevel@tonic-gate /* 32397c478bd9Sstevel@tonic-gate * If we write enabled the text segment to perform these relocations 32407c478bd9Sstevel@tonic-gate * re-protect by disabling writes. 32417c478bd9Sstevel@tonic-gate */ 32427c478bd9Sstevel@tonic-gate if (textrel) 32437c478bd9Sstevel@tonic-gate (void) LM_SET_PROT(lmp)(lmp, 0); 32447c478bd9Sstevel@tonic-gate 32457c478bd9Sstevel@tonic-gate return (ret); 32467c478bd9Sstevel@tonic-gate } 3247