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 /* 2356deab07SRod Evans * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267257d1b4Sraf 277257d1b4Sraf /* 287257d1b4Sraf * Copyright (c) 1988 AT&T 297257d1b4Sraf * All Rights Reserved 307257d1b4Sraf */ 317257d1b4Sraf 327c478bd9Sstevel@tonic-gate /* 337c478bd9Sstevel@tonic-gate * Utility routines for run-time linker. some are duplicated here from libc 347c478bd9Sstevel@tonic-gate * (with different names) to avoid name space collisions. 357c478bd9Sstevel@tonic-gate */ 367c478bd9Sstevel@tonic-gate #include <stdio.h> 37*2017c965SRod Evans #include <sys/time.h> 387c478bd9Sstevel@tonic-gate #include <sys/types.h> 397c478bd9Sstevel@tonic-gate #include <sys/mman.h> 407c478bd9Sstevel@tonic-gate #include <sys/lwp.h> 417c478bd9Sstevel@tonic-gate #include <sys/debug.h> 427c478bd9Sstevel@tonic-gate #include <stdarg.h> 437c478bd9Sstevel@tonic-gate #include <fcntl.h> 447c478bd9Sstevel@tonic-gate #include <string.h> 457c478bd9Sstevel@tonic-gate #include <dlfcn.h> 467c478bd9Sstevel@tonic-gate #include <unistd.h> 477c478bd9Sstevel@tonic-gate #include <stdlib.h> 487c478bd9Sstevel@tonic-gate #include <sys/auxv.h> 4956deab07SRod Evans #include <limits.h> 505aefb655Srie #include <debug.h> 515aefb655Srie #include <conv.h> 527c478bd9Sstevel@tonic-gate #include "_rtld.h" 537c478bd9Sstevel@tonic-gate #include "_audit.h" 5410a4fa49Srie #include "_elf.h" 557c478bd9Sstevel@tonic-gate #include "msg.h" 567c478bd9Sstevel@tonic-gate 577c478bd9Sstevel@tonic-gate static int ld_flags_env(const char *, Word *, Word *, uint_t, int); 587c478bd9Sstevel@tonic-gate 597c478bd9Sstevel@tonic-gate /* 607c478bd9Sstevel@tonic-gate * Null function used as place where a debugger can set a breakpoint. 617c478bd9Sstevel@tonic-gate */ 627c478bd9Sstevel@tonic-gate void 635aefb655Srie rtld_db_dlactivity(Lm_list *lml) 647c478bd9Sstevel@tonic-gate { 655aefb655Srie DBG_CALL(Dbg_util_dbnotify(lml, r_debug.rtd_rdebug.r_rdevent, 665aefb655Srie r_debug.rtd_rdebug.r_state)); 677c478bd9Sstevel@tonic-gate } 687c478bd9Sstevel@tonic-gate 697c478bd9Sstevel@tonic-gate /* 707c478bd9Sstevel@tonic-gate * Null function used as place where debugger can set a pre .init 717c478bd9Sstevel@tonic-gate * processing breakpoint. 727c478bd9Sstevel@tonic-gate */ 737c478bd9Sstevel@tonic-gate void 745aefb655Srie rtld_db_preinit(Lm_list *lml) 757c478bd9Sstevel@tonic-gate { 765aefb655Srie DBG_CALL(Dbg_util_dbnotify(lml, r_debug.rtd_rdebug.r_rdevent, 775aefb655Srie r_debug.rtd_rdebug.r_state)); 787c478bd9Sstevel@tonic-gate } 797c478bd9Sstevel@tonic-gate 807c478bd9Sstevel@tonic-gate /* 817c478bd9Sstevel@tonic-gate * Null function used as place where debugger can set a post .init 827c478bd9Sstevel@tonic-gate * processing breakpoint. 837c478bd9Sstevel@tonic-gate */ 847c478bd9Sstevel@tonic-gate void 855aefb655Srie rtld_db_postinit(Lm_list *lml) 867c478bd9Sstevel@tonic-gate { 875aefb655Srie DBG_CALL(Dbg_util_dbnotify(lml, r_debug.rtd_rdebug.r_rdevent, 885aefb655Srie r_debug.rtd_rdebug.r_state)); 897c478bd9Sstevel@tonic-gate } 907c478bd9Sstevel@tonic-gate 917c478bd9Sstevel@tonic-gate /* 927c478bd9Sstevel@tonic-gate * Debugger Event Notification 937c478bd9Sstevel@tonic-gate * 947c478bd9Sstevel@tonic-gate * This function centralizes all debugger event notification (ala rtld_db). 957c478bd9Sstevel@tonic-gate * 967c478bd9Sstevel@tonic-gate * There's a simple intent, focused on insuring the primary link-map control 977c478bd9Sstevel@tonic-gate * list (or each link-map list) is consistent, and the indication that objects 987c478bd9Sstevel@tonic-gate * have been added or deleted from this list. Although an RD_ADD and RD_DELETE 997c478bd9Sstevel@tonic-gate * event are posted for each of these, most debuggers don't care, as their 1007c478bd9Sstevel@tonic-gate * view is that these events simply convey an "inconsistent" state. 1017c478bd9Sstevel@tonic-gate * 1027c478bd9Sstevel@tonic-gate * We also don't want to trigger multiple RD_ADD/RD_DELETE events any time we 1037c478bd9Sstevel@tonic-gate * enter ld.so.1. 1047c478bd9Sstevel@tonic-gate * 1057c478bd9Sstevel@tonic-gate * With auditors, we may be in the process of relocating a collection of 1067c478bd9Sstevel@tonic-gate * objects, and will leave() ld.so.1 to call the auditor. At this point we 1077c478bd9Sstevel@tonic-gate * must indicate an RD_CONSISTENT event, but librtld_db will not report an 1087c478bd9Sstevel@tonic-gate * object to the debuggers until relocation processing has been completed on it. 1097c478bd9Sstevel@tonic-gate * To allow for the collection of these objects that are pending relocation, an 1107c478bd9Sstevel@tonic-gate * RD_ADD event is set after completing a series of relocations on the primary 1117c478bd9Sstevel@tonic-gate * link-map control list. 1127c478bd9Sstevel@tonic-gate * 1137c478bd9Sstevel@tonic-gate * Set an RD_ADD/RD_DELETE event and indicate that an RD_CONSISTENT event is 1147c478bd9Sstevel@tonic-gate * required later (LML_FLG_DBNOTIF): 1157c478bd9Sstevel@tonic-gate * 1167c478bd9Sstevel@tonic-gate * i the first time we add or delete an object to the primary link-map 1177c478bd9Sstevel@tonic-gate * control list. 1187c478bd9Sstevel@tonic-gate * ii the first time we move a secondary link-map control list to the primary 1197c478bd9Sstevel@tonic-gate * link-map control list (effectively, this is like adding a group of 1207c478bd9Sstevel@tonic-gate * objects to the primary link-map control list). 1217c478bd9Sstevel@tonic-gate * 1227c478bd9Sstevel@tonic-gate * Set an RD_CONSISTENT event when it is required (LML_FLG_DBNOTIF is set) and 1237c478bd9Sstevel@tonic-gate * 1247c478bd9Sstevel@tonic-gate * i each time we leave the runtime linker. 1257c478bd9Sstevel@tonic-gate */ 1267c478bd9Sstevel@tonic-gate void 1277c478bd9Sstevel@tonic-gate rd_event(Lm_list *lml, rd_event_e event, r_state_e state) 1287c478bd9Sstevel@tonic-gate { 12910a4fa49Srie void (*fptr)(Lm_list *); 1307c478bd9Sstevel@tonic-gate 1317c478bd9Sstevel@tonic-gate switch (event) { 1327c478bd9Sstevel@tonic-gate case RD_PREINIT: 1337c478bd9Sstevel@tonic-gate fptr = rtld_db_preinit; 1347c478bd9Sstevel@tonic-gate break; 1357c478bd9Sstevel@tonic-gate case RD_POSTINIT: 1367c478bd9Sstevel@tonic-gate fptr = rtld_db_postinit; 1377c478bd9Sstevel@tonic-gate break; 1387c478bd9Sstevel@tonic-gate case RD_DLACTIVITY: 1397c478bd9Sstevel@tonic-gate switch (state) { 1407c478bd9Sstevel@tonic-gate case RT_CONSISTENT: 1417c478bd9Sstevel@tonic-gate lml->lm_flags &= ~LML_FLG_DBNOTIF; 1427c478bd9Sstevel@tonic-gate 1437c478bd9Sstevel@tonic-gate /* 1447c478bd9Sstevel@tonic-gate * Do we need to send a notification? 1457c478bd9Sstevel@tonic-gate */ 1467c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_DBNOTIF) == 0) 1477c478bd9Sstevel@tonic-gate return; 1487c478bd9Sstevel@tonic-gate rtld_flags &= ~RT_FL_DBNOTIF; 1497c478bd9Sstevel@tonic-gate break; 1507c478bd9Sstevel@tonic-gate case RT_ADD: 1517c478bd9Sstevel@tonic-gate case RT_DELETE: 1527c478bd9Sstevel@tonic-gate lml->lm_flags |= LML_FLG_DBNOTIF; 1537c478bd9Sstevel@tonic-gate 1547c478bd9Sstevel@tonic-gate /* 1557c478bd9Sstevel@tonic-gate * If we are already in an inconsistent state, no 1567c478bd9Sstevel@tonic-gate * notification is required. 1577c478bd9Sstevel@tonic-gate */ 1587c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DBNOTIF) 1597c478bd9Sstevel@tonic-gate return; 1607c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_DBNOTIF; 1617c478bd9Sstevel@tonic-gate break; 1627c478bd9Sstevel@tonic-gate }; 1637c478bd9Sstevel@tonic-gate fptr = rtld_db_dlactivity; 1647c478bd9Sstevel@tonic-gate break; 1657c478bd9Sstevel@tonic-gate default: 1667c478bd9Sstevel@tonic-gate /* 1677c478bd9Sstevel@tonic-gate * RD_NONE - do nothing 1687c478bd9Sstevel@tonic-gate */ 1697c478bd9Sstevel@tonic-gate break; 1707c478bd9Sstevel@tonic-gate }; 1717c478bd9Sstevel@tonic-gate 1727c478bd9Sstevel@tonic-gate /* 1737c478bd9Sstevel@tonic-gate * Set event state and call 'notification' function. 1747c478bd9Sstevel@tonic-gate * 1757c478bd9Sstevel@tonic-gate * The debugging clients have previously been told about these 1767c478bd9Sstevel@tonic-gate * notification functions and have set breakpoints on them if they 1777c478bd9Sstevel@tonic-gate * are interested in the notification. 1787c478bd9Sstevel@tonic-gate */ 1797c478bd9Sstevel@tonic-gate r_debug.rtd_rdebug.r_state = state; 1807c478bd9Sstevel@tonic-gate r_debug.rtd_rdebug.r_rdevent = event; 1815aefb655Srie fptr(lml); 1827c478bd9Sstevel@tonic-gate r_debug.rtd_rdebug.r_rdevent = RD_NONE; 1837c478bd9Sstevel@tonic-gate } 1847c478bd9Sstevel@tonic-gate 18502ca3e02Srie #if defined(__sparc) || defined(__x86) 1867c478bd9Sstevel@tonic-gate /* 1877c478bd9Sstevel@tonic-gate * Stack Cleanup. 1887c478bd9Sstevel@tonic-gate * 1897c478bd9Sstevel@tonic-gate * This function is invoked to 'remove' arguments that were passed in on the 1907c478bd9Sstevel@tonic-gate * stack. This is most likely if ld.so.1 was invoked directly. In that case 1917c478bd9Sstevel@tonic-gate * we want to remove ld.so.1 as well as it's arguments from the argv[] array. 1927c478bd9Sstevel@tonic-gate * Which means we then need to slide everything above it on the stack down 1937c478bd9Sstevel@tonic-gate * accordingly. 1947c478bd9Sstevel@tonic-gate * 19502ca3e02Srie * While the stack layout is platform specific - it just so happens that __x86, 19602ca3e02Srie * and __sparc platforms share the following initial stack layout. 1977c478bd9Sstevel@tonic-gate * 1987c478bd9Sstevel@tonic-gate * !_______________________! high addresses 1997c478bd9Sstevel@tonic-gate * ! ! 2007c478bd9Sstevel@tonic-gate * ! Information ! 2017c478bd9Sstevel@tonic-gate * ! Block ! 2027c478bd9Sstevel@tonic-gate * ! (size varies) ! 2037c478bd9Sstevel@tonic-gate * !_______________________! 2047c478bd9Sstevel@tonic-gate * ! 0 word ! 2057c478bd9Sstevel@tonic-gate * !_______________________! 2067c478bd9Sstevel@tonic-gate * ! Auxiliary ! 2077c478bd9Sstevel@tonic-gate * ! vector ! 2087c478bd9Sstevel@tonic-gate * ! 2 word entries ! 2097c478bd9Sstevel@tonic-gate * ! ! 2107c478bd9Sstevel@tonic-gate * !_______________________! 2117c478bd9Sstevel@tonic-gate * ! 0 word ! 2127c478bd9Sstevel@tonic-gate * !_______________________! 2137c478bd9Sstevel@tonic-gate * ! Environment ! 2147c478bd9Sstevel@tonic-gate * ! pointers ! 2157c478bd9Sstevel@tonic-gate * ! ... ! 2167c478bd9Sstevel@tonic-gate * ! (one word each) ! 2177c478bd9Sstevel@tonic-gate * !_______________________! 2187c478bd9Sstevel@tonic-gate * ! 0 word ! 2197c478bd9Sstevel@tonic-gate * !_______________________! 2207c478bd9Sstevel@tonic-gate * ! Argument ! low addresses 2217c478bd9Sstevel@tonic-gate * ! pointers ! 2227c478bd9Sstevel@tonic-gate * ! Argc words ! 2237c478bd9Sstevel@tonic-gate * !_______________________! 2247c478bd9Sstevel@tonic-gate * ! ! 2257c478bd9Sstevel@tonic-gate * ! Argc ! 2267c478bd9Sstevel@tonic-gate * !_______________________! 2277c478bd9Sstevel@tonic-gate * ! ... ! 2287c478bd9Sstevel@tonic-gate * 2297c478bd9Sstevel@tonic-gate */ 2307c478bd9Sstevel@tonic-gate static void 23141072f3cSrie stack_cleanup(char **argv, char ***envp, auxv_t **auxv, int rmcnt) 2327c478bd9Sstevel@tonic-gate { 23341072f3cSrie int ndx; 2347c478bd9Sstevel@tonic-gate long *argc; 23541072f3cSrie char **oargv, **nargv; 23641072f3cSrie char **oenvp, **nenvp; 23741072f3cSrie auxv_t *oauxv, *nauxv; 2387c478bd9Sstevel@tonic-gate 2397c478bd9Sstevel@tonic-gate /* 24041072f3cSrie * Slide ARGV[] and update argc. The argv pointer remains the same, 24141072f3cSrie * however slide the applications arguments over the arguments to 24241072f3cSrie * ld.so.1. 2437c478bd9Sstevel@tonic-gate */ 24441072f3cSrie nargv = &argv[0]; 24541072f3cSrie oargv = &argv[rmcnt]; 24641072f3cSrie 24741072f3cSrie for (ndx = 0; oargv[ndx]; ndx++) 24841072f3cSrie nargv[ndx] = oargv[ndx]; 24941072f3cSrie nargv[ndx] = oargv[ndx]; 25041072f3cSrie 25141072f3cSrie argc = (long *)((uintptr_t)argv - sizeof (long *)); 2527c478bd9Sstevel@tonic-gate *argc -= rmcnt; 2537c478bd9Sstevel@tonic-gate 2547c478bd9Sstevel@tonic-gate /* 25541072f3cSrie * Slide ENVP[], and update the environment array pointer. 2567c478bd9Sstevel@tonic-gate */ 25741072f3cSrie ndx++; 25841072f3cSrie nenvp = &nargv[ndx]; 25941072f3cSrie oenvp = &oargv[ndx]; 26041072f3cSrie *envp = nenvp; 26141072f3cSrie 26241072f3cSrie for (ndx = 0; oenvp[ndx]; ndx++) 26341072f3cSrie nenvp[ndx] = oenvp[ndx]; 26441072f3cSrie nenvp[ndx] = oenvp[ndx]; 2657c478bd9Sstevel@tonic-gate 2667c478bd9Sstevel@tonic-gate /* 26741072f3cSrie * Slide AUXV[], and update the aux vector pointer. 2687c478bd9Sstevel@tonic-gate */ 26941072f3cSrie ndx++; 27041072f3cSrie nauxv = (auxv_t *)&nenvp[ndx]; 27141072f3cSrie oauxv = (auxv_t *)&oenvp[ndx]; 27241072f3cSrie *auxv = nauxv; 27341072f3cSrie 27441072f3cSrie for (ndx = 0; (oauxv[ndx].a_type != AT_NULL); ndx++) 27541072f3cSrie nauxv[ndx] = oauxv[ndx]; 27641072f3cSrie nauxv[ndx] = oauxv[ndx]; 2777c478bd9Sstevel@tonic-gate } 2787c478bd9Sstevel@tonic-gate #else 2797c478bd9Sstevel@tonic-gate /* 2807c478bd9Sstevel@tonic-gate * Verify that the above routine is appropriate for any new platforms. 2817c478bd9Sstevel@tonic-gate */ 2827c478bd9Sstevel@tonic-gate #error unsupported architecture! 2837c478bd9Sstevel@tonic-gate #endif 2847c478bd9Sstevel@tonic-gate 2857c478bd9Sstevel@tonic-gate /* 28641072f3cSrie * The only command line argument recognized is -e, followed by a runtime 28741072f3cSrie * linker environment variable. 2887c478bd9Sstevel@tonic-gate */ 2897c478bd9Sstevel@tonic-gate int 29041072f3cSrie rtld_getopt(char **argv, char ***envp, auxv_t **auxv, Word *lmflags, 29141072f3cSrie Word *lmtflags, int aout) 2927c478bd9Sstevel@tonic-gate { 29341072f3cSrie int ndx; 2947c478bd9Sstevel@tonic-gate 29541072f3cSrie for (ndx = 1; argv[ndx]; ndx++) { 2967c478bd9Sstevel@tonic-gate char *str; 2977c478bd9Sstevel@tonic-gate 29841072f3cSrie if (argv[ndx][0] != '-') 2997c478bd9Sstevel@tonic-gate break; 3007c478bd9Sstevel@tonic-gate 30141072f3cSrie if (argv[ndx][1] == '\0') { 30241072f3cSrie ndx++; 3037c478bd9Sstevel@tonic-gate break; 3047c478bd9Sstevel@tonic-gate } 3057c478bd9Sstevel@tonic-gate 30641072f3cSrie if (argv[ndx][1] != 'e') 30741072f3cSrie return (1); 3087c478bd9Sstevel@tonic-gate 30941072f3cSrie if (argv[ndx][2] == '\0') { 31041072f3cSrie ndx++; 31141072f3cSrie if (argv[ndx] == NULL) 31241072f3cSrie return (1); 31341072f3cSrie str = argv[ndx]; 3147c478bd9Sstevel@tonic-gate } else 31541072f3cSrie str = &argv[ndx][2]; 3167c478bd9Sstevel@tonic-gate 31741072f3cSrie /* 31841072f3cSrie * If the environment variable starts with LD_, strip the LD_. 31941072f3cSrie * Otherwise, take things as is. 32041072f3cSrie */ 32141072f3cSrie if ((str[0] == 'L') && (str[1] == 'D') && (str[2] == '_') && 32241072f3cSrie (str[3] != '\0')) 32341072f3cSrie str += 3; 3247c478bd9Sstevel@tonic-gate if (ld_flags_env(str, lmflags, lmtflags, 0, aout) == 1) 3257c478bd9Sstevel@tonic-gate return (1); 3267c478bd9Sstevel@tonic-gate } 3277c478bd9Sstevel@tonic-gate 32841072f3cSrie /* 32941072f3cSrie * Make sure an object file has been specified. 33041072f3cSrie */ 33143d7826aSRod Evans if (argv[ndx] == NULL) 3327c478bd9Sstevel@tonic-gate return (1); 3337c478bd9Sstevel@tonic-gate 3347c478bd9Sstevel@tonic-gate /* 3357c478bd9Sstevel@tonic-gate * Having gotten the arguments, clean ourselves off of the stack. 3367c478bd9Sstevel@tonic-gate */ 33741072f3cSrie stack_cleanup(argv, envp, auxv, ndx); 3387c478bd9Sstevel@tonic-gate return (0); 3397c478bd9Sstevel@tonic-gate } 3407c478bd9Sstevel@tonic-gate 3417c478bd9Sstevel@tonic-gate /* 3429aa23310Srie * Compare function for PathNode AVL tree. 3437c478bd9Sstevel@tonic-gate */ 3447c478bd9Sstevel@tonic-gate static int 3459aa23310Srie pnavl_compare(const void *n1, const void *n2) 3467c478bd9Sstevel@tonic-gate { 3477c478bd9Sstevel@tonic-gate uint_t hash1, hash2; 3487c478bd9Sstevel@tonic-gate const char *st1, *st2; 3497c478bd9Sstevel@tonic-gate int rc; 3507c478bd9Sstevel@tonic-gate 3519aa23310Srie hash1 = ((PathNode *)n1)->pn_hash; 3529aa23310Srie hash2 = ((PathNode *)n2)->pn_hash; 3537c478bd9Sstevel@tonic-gate 3547c478bd9Sstevel@tonic-gate if (hash1 > hash2) 3557c478bd9Sstevel@tonic-gate return (1); 3567c478bd9Sstevel@tonic-gate if (hash1 < hash2) 3577c478bd9Sstevel@tonic-gate return (-1); 3587c478bd9Sstevel@tonic-gate 3599aa23310Srie st1 = ((PathNode *)n1)->pn_name; 3609aa23310Srie st2 = ((PathNode *)n2)->pn_name; 3617c478bd9Sstevel@tonic-gate 3627c478bd9Sstevel@tonic-gate rc = strcmp(st1, st2); 3637c478bd9Sstevel@tonic-gate if (rc > 0) 3647c478bd9Sstevel@tonic-gate return (1); 3657c478bd9Sstevel@tonic-gate if (rc < 0) 3667c478bd9Sstevel@tonic-gate return (-1); 3677c478bd9Sstevel@tonic-gate return (0); 3687c478bd9Sstevel@tonic-gate } 3697c478bd9Sstevel@tonic-gate 3703dbfc803SRod Evans /* 3713dbfc803SRod Evans * Create an AVL tree. 3723dbfc803SRod Evans */ 3733dbfc803SRod Evans static avl_tree_t * 3743dbfc803SRod Evans pnavl_create(size_t size) 3753dbfc803SRod Evans { 3763dbfc803SRod Evans avl_tree_t *avlt; 3773dbfc803SRod Evans 3783dbfc803SRod Evans if ((avlt = malloc(sizeof (avl_tree_t))) == NULL) 3793dbfc803SRod Evans return (NULL); 3803dbfc803SRod Evans avl_create(avlt, pnavl_compare, size, SGSOFFSETOF(PathNode, pn_avl)); 3813dbfc803SRod Evans return (avlt); 3823dbfc803SRod Evans } 3833dbfc803SRod Evans 3847c478bd9Sstevel@tonic-gate /* 3859aa23310Srie * Determine if a pathname has already been recorded on the full path name 3869aa23310Srie * AVL tree. This tree maintains a node for each path name that ld.so.1 has 3879aa23310Srie * successfully loaded. If the path name does not exist in this AVL tree, then 3889aa23310Srie * the next insertion point is deposited in "where". This value can be used by 3899aa23310Srie * fpavl_insert() to expedite the insertion. 3907c478bd9Sstevel@tonic-gate */ 3917c478bd9Sstevel@tonic-gate Rt_map * 39256deab07SRod Evans fpavl_recorded(Lm_list *lml, const char *name, uint_t hash, avl_index_t *where) 3937c478bd9Sstevel@tonic-gate { 3949aa23310Srie FullPathNode fpn, *fpnp; 3957c478bd9Sstevel@tonic-gate 3967c478bd9Sstevel@tonic-gate /* 3977c478bd9Sstevel@tonic-gate * Create the avl tree if required. 3987c478bd9Sstevel@tonic-gate */ 3993dbfc803SRod Evans if ((lml->lm_fpavl == NULL) && 4003dbfc803SRod Evans ((lml->lm_fpavl = pnavl_create(sizeof (FullPathNode))) == NULL)) 4013dbfc803SRod Evans return (NULL); 4027c478bd9Sstevel@tonic-gate 4039aa23310Srie fpn.fpn_node.pn_name = name; 40456deab07SRod Evans if ((fpn.fpn_node.pn_hash = hash) == 0) 40556deab07SRod Evans fpn.fpn_node.pn_hash = sgs_str_hash(name); 4067c478bd9Sstevel@tonic-gate 4077c478bd9Sstevel@tonic-gate if ((fpnp = avl_find(lml->lm_fpavl, &fpn, where)) == NULL) 4087c478bd9Sstevel@tonic-gate return (NULL); 4097c478bd9Sstevel@tonic-gate 4107c478bd9Sstevel@tonic-gate return (fpnp->fpn_lmp); 4117c478bd9Sstevel@tonic-gate } 4127c478bd9Sstevel@tonic-gate 4137c478bd9Sstevel@tonic-gate /* 4149aa23310Srie * Insert a name into the FullPathNode AVL tree for the link-map list. The 41524a6229eSrie * objects NAME() is the path that would have originally been searched for, and 41624a6229eSrie * is therefore the name to associate with any "where" value. If the object has 4177c478bd9Sstevel@tonic-gate * a different PATHNAME(), perhaps because it has resolved to a different file 4189aa23310Srie * (see fullpath()), then this name will be recorded as a separate FullPathNode 4199aa23310Srie * (see load_file()). 4207c478bd9Sstevel@tonic-gate */ 4217c478bd9Sstevel@tonic-gate int 4227c478bd9Sstevel@tonic-gate fpavl_insert(Lm_list *lml, Rt_map *lmp, const char *name, avl_index_t where) 4237c478bd9Sstevel@tonic-gate { 4249aa23310Srie FullPathNode *fpnp; 42556deab07SRod Evans uint_t hash = sgs_str_hash(name); 4267c478bd9Sstevel@tonic-gate 4277c478bd9Sstevel@tonic-gate if (where == 0) { 4287c478bd9Sstevel@tonic-gate /* LINTED */ 42956deab07SRod Evans Rt_map *_lmp = fpavl_recorded(lml, name, hash, &where); 4307c478bd9Sstevel@tonic-gate 4317c478bd9Sstevel@tonic-gate /* 4327c478bd9Sstevel@tonic-gate * We better not get a hit now, we do not want duplicates in 4337c478bd9Sstevel@tonic-gate * the tree. 4347c478bd9Sstevel@tonic-gate */ 43543d7826aSRod Evans ASSERT(_lmp == NULL); 4367c478bd9Sstevel@tonic-gate } 4377c478bd9Sstevel@tonic-gate 4387c478bd9Sstevel@tonic-gate /* 4399aa23310Srie * Insert new node in tree. 4407c478bd9Sstevel@tonic-gate */ 4413dbfc803SRod Evans if ((fpnp = calloc(sizeof (FullPathNode), 1)) == NULL) 4427c478bd9Sstevel@tonic-gate return (0); 4437c478bd9Sstevel@tonic-gate 4449aa23310Srie fpnp->fpn_node.pn_name = name; 44556deab07SRod Evans fpnp->fpn_node.pn_hash = hash; 4467c478bd9Sstevel@tonic-gate fpnp->fpn_lmp = lmp; 4477c478bd9Sstevel@tonic-gate 448cce0e03bSab if (aplist_append(&FPNODE(lmp), fpnp, AL_CNT_FPNODE) == NULL) { 4497c478bd9Sstevel@tonic-gate free(fpnp); 4507c478bd9Sstevel@tonic-gate return (0); 4517c478bd9Sstevel@tonic-gate } 4527c478bd9Sstevel@tonic-gate 4537c478bd9Sstevel@tonic-gate ASSERT(lml->lm_fpavl != NULL); 4547c478bd9Sstevel@tonic-gate avl_insert(lml->lm_fpavl, fpnp, where); 4557c478bd9Sstevel@tonic-gate return (1); 4567c478bd9Sstevel@tonic-gate } 4577c478bd9Sstevel@tonic-gate 4587c478bd9Sstevel@tonic-gate /* 45956deab07SRod Evans * Remove an object from the FullPathNode AVL tree. 4607c478bd9Sstevel@tonic-gate */ 4617c478bd9Sstevel@tonic-gate void 4627c478bd9Sstevel@tonic-gate fpavl_remove(Rt_map *lmp) 4637c478bd9Sstevel@tonic-gate { 4649aa23310Srie FullPathNode *fpnp; 465cce0e03bSab Aliste idx; 4667c478bd9Sstevel@tonic-gate 467cce0e03bSab for (APLIST_TRAVERSE(FPNODE(lmp), idx, fpnp)) { 4687c478bd9Sstevel@tonic-gate avl_remove(LIST(lmp)->lm_fpavl, fpnp); 4697c478bd9Sstevel@tonic-gate free(fpnp); 4707c478bd9Sstevel@tonic-gate } 4717c478bd9Sstevel@tonic-gate free(FPNODE(lmp)); 472cce0e03bSab FPNODE(lmp) = NULL; 4737c478bd9Sstevel@tonic-gate } 4747c478bd9Sstevel@tonic-gate 4759aa23310Srie /* 4769aa23310Srie * Determine if a pathname has already been recorded on the not-found AVL tree. 4779aa23310Srie * This tree maintains a node for each path name that ld.so.1 has explicitly 4789aa23310Srie * inspected, but has failed to load during a single ld.so.1 operation. If the 4799aa23310Srie * path name does not exist in this AVL tree, then the next insertion point is 4809aa23310Srie * deposited in "where". This value can be used by nfavl_insert() to expedite 4819aa23310Srie * the insertion. 4829aa23310Srie */ 4839aa23310Srie int 48456deab07SRod Evans nfavl_recorded(const char *name, uint_t hash, avl_index_t *where) 4859aa23310Srie { 4869aa23310Srie PathNode pn; 4879aa23310Srie 4889aa23310Srie /* 4899aa23310Srie * Create the avl tree if required. 4909aa23310Srie */ 4913dbfc803SRod Evans if ((nfavl == NULL) && 4923dbfc803SRod Evans ((nfavl = pnavl_create(sizeof (PathNode))) == NULL)) 49356deab07SRod Evans return (NULL); 4949aa23310Srie 4959aa23310Srie pn.pn_name = name; 49656deab07SRod Evans if ((pn.pn_hash = hash) == 0) 49756deab07SRod Evans pn.pn_hash = sgs_str_hash(name); 4989aa23310Srie 4993dbfc803SRod Evans if (avl_find(nfavl, &pn, where) == NULL) 5009aa23310Srie return (0); 5019aa23310Srie 5029aa23310Srie return (1); 5039aa23310Srie } 5049aa23310Srie 5059aa23310Srie /* 5069aa23310Srie * Insert a name into the not-found AVL tree. 5079aa23310Srie */ 5089aa23310Srie void 5099aa23310Srie nfavl_insert(const char *name, avl_index_t where) 5109aa23310Srie { 5119aa23310Srie PathNode *pnp; 51256deab07SRod Evans uint_t hash = sgs_str_hash(name); 5139aa23310Srie 5149aa23310Srie if (where == 0) { 5159aa23310Srie /* LINTED */ 51656deab07SRod Evans int in_nfavl = nfavl_recorded(name, hash, &where); 5179aa23310Srie 5189aa23310Srie /* 5199aa23310Srie * We better not get a hit now, we do not want duplicates in 5209aa23310Srie * the tree. 5219aa23310Srie */ 5229aa23310Srie ASSERT(in_nfavl == 0); 5239aa23310Srie } 5249aa23310Srie 5259aa23310Srie /* 5269aa23310Srie * Insert new node in tree. 5279aa23310Srie */ 52856deab07SRod Evans if ((pnp = calloc(sizeof (PathNode), 1)) != NULL) { 5299aa23310Srie pnp->pn_name = name; 53056deab07SRod Evans pnp->pn_hash = hash; 5319aa23310Srie avl_insert(nfavl, pnp, where); 5329aa23310Srie } 5339aa23310Srie } 5347c478bd9Sstevel@tonic-gate 5353dbfc803SRod Evans static avl_tree_t *spavl = NULL; 5363dbfc803SRod Evans 5373dbfc803SRod Evans /* 5383dbfc803SRod Evans * Search for a path name within the secure path AVL tree. This tree is used 5393dbfc803SRod Evans * to maintain a list of directories in which the dependencies of a secure 5403dbfc803SRod Evans * process have been found. This list provides a fall-back in the case that a 5413dbfc803SRod Evans * $ORIGIN expansion is deemed insecure, when the expansion results in a path 5423dbfc803SRod Evans * name that has already provided dependencies. 5433dbfc803SRod Evans */ 5443dbfc803SRod Evans int 5453dbfc803SRod Evans spavl_recorded(const char *name, avl_index_t *where) 5463dbfc803SRod Evans { 5473dbfc803SRod Evans PathNode pn; 5483dbfc803SRod Evans 5493dbfc803SRod Evans /* 5503dbfc803SRod Evans * Create the avl tree if required. 5513dbfc803SRod Evans */ 5523dbfc803SRod Evans if ((spavl == NULL) && 5533dbfc803SRod Evans ((spavl = pnavl_create(sizeof (PathNode))) == NULL)) 5543dbfc803SRod Evans return (0); 5553dbfc803SRod Evans 5563dbfc803SRod Evans pn.pn_name = name; 5573dbfc803SRod Evans pn.pn_hash = sgs_str_hash(name); 5583dbfc803SRod Evans 5593dbfc803SRod Evans if (avl_find(spavl, &pn, where) == NULL) 5603dbfc803SRod Evans return (0); 5613dbfc803SRod Evans 5623dbfc803SRod Evans return (1); 5633dbfc803SRod Evans } 5643dbfc803SRod Evans 5653dbfc803SRod Evans /* 5663dbfc803SRod Evans * Insert the directory name, of a full path name, into the secure path AVL 5673dbfc803SRod Evans * tree. 5683dbfc803SRod Evans */ 5693dbfc803SRod Evans void 5703dbfc803SRod Evans spavl_insert(const char *name) 5713dbfc803SRod Evans { 5723dbfc803SRod Evans char buffer[PATH_MAX], *str; 5733dbfc803SRod Evans size_t size; 5743dbfc803SRod Evans avl_index_t where; 5753dbfc803SRod Evans PathNode *pnp; 5763dbfc803SRod Evans 5773dbfc803SRod Evans /* 5783dbfc803SRod Evans * Separate the directory name from the path name. 5793dbfc803SRod Evans */ 5803dbfc803SRod Evans if ((str = strrchr(name, '/')) == name) 5813dbfc803SRod Evans size = 1; 5823dbfc803SRod Evans else 5833dbfc803SRod Evans size = str - name; 5843dbfc803SRod Evans 5853dbfc803SRod Evans (void) strncpy(buffer, name, size); 5863dbfc803SRod Evans buffer[size] = '\0'; 5873dbfc803SRod Evans 5883dbfc803SRod Evans /* 5893dbfc803SRod Evans * Determine whether this directory name is already recorded, or if 5903dbfc803SRod Evans * not, 'where" will provide the insertion point for the new string. 5913dbfc803SRod Evans */ 5923dbfc803SRod Evans if (spavl_recorded(buffer, &where)) 5933dbfc803SRod Evans return; 5943dbfc803SRod Evans 5953dbfc803SRod Evans /* 5963dbfc803SRod Evans * Insert new node in tree. 5973dbfc803SRod Evans */ 59843d7826aSRod Evans if ((pnp = calloc(sizeof (PathNode), 1)) != NULL) { 5993dbfc803SRod Evans pnp->pn_name = strdup(buffer); 6003dbfc803SRod Evans pnp->pn_hash = sgs_str_hash(buffer); 6013dbfc803SRod Evans avl_insert(spavl, pnp, where); 6023dbfc803SRod Evans } 6033dbfc803SRod Evans } 6043dbfc803SRod Evans 60556deab07SRod Evans /* 60656deab07SRod Evans * Inspect the generic string AVL tree for the given string. If the string is 60756deab07SRod Evans * not present, duplicate it, and insert the string in the AVL tree. Return the 60856deab07SRod Evans * duplicated string to the caller. 60956deab07SRod Evans * 61056deab07SRod Evans * These strings are maintained for the life of ld.so.1 and represent path 61156deab07SRod Evans * names, file names, and search paths. All other AVL trees that maintain 61256deab07SRod Evans * FullPathNode and not-found path names use the same string pointer 61356deab07SRod Evans * established for this string. 61456deab07SRod Evans */ 61556deab07SRod Evans static avl_tree_t *stravl = NULL; 61656deab07SRod Evans static char *strbuf = NULL; 61756deab07SRod Evans static PathNode *pnbuf = NULL; 61856deab07SRod Evans static size_t strsize = 0, pnsize = 0; 61956deab07SRod Evans 62056deab07SRod Evans const char * 62156deab07SRod Evans stravl_insert(const char *name, uint_t hash, size_t nsize, int substr) 62256deab07SRod Evans { 62356deab07SRod Evans char str[PATH_MAX]; 62456deab07SRod Evans PathNode *pnp; 62556deab07SRod Evans avl_index_t where; 62656deab07SRod Evans 62756deab07SRod Evans /* 62856deab07SRod Evans * Create the avl tree if required. 62956deab07SRod Evans */ 63056deab07SRod Evans if ((stravl == NULL) && 63156deab07SRod Evans ((stravl = pnavl_create(sizeof (PathNode))) == NULL)) 63256deab07SRod Evans return (NULL); 63356deab07SRod Evans 63456deab07SRod Evans /* 63556deab07SRod Evans * Determine the string size if not provided by the caller. 63656deab07SRod Evans */ 63756deab07SRod Evans if (nsize == 0) 63856deab07SRod Evans nsize = strlen(name) + 1; 63956deab07SRod Evans else if (substr) { 64056deab07SRod Evans /* 64156deab07SRod Evans * The string passed to us may be a multiple path string for 64256deab07SRod Evans * which we only need the first component. Using the provided 64356deab07SRod Evans * size, strip out the required string. 64456deab07SRod Evans */ 64556deab07SRod Evans (void) strncpy(str, name, nsize); 64656deab07SRod Evans str[nsize - 1] = '\0'; 64756deab07SRod Evans name = str; 64856deab07SRod Evans } 64956deab07SRod Evans 65056deab07SRod Evans /* 65156deab07SRod Evans * Allocate a PathNode buffer if one doesn't exist, or any existing 65256deab07SRod Evans * buffer has been used up. 65356deab07SRod Evans */ 65456deab07SRod Evans if ((pnbuf == NULL) || (sizeof (PathNode) > pnsize)) { 65556deab07SRod Evans pnsize = syspagsz; 65656deab07SRod Evans if ((pnbuf = dz_map(0, 0, pnsize, (PROT_READ | PROT_WRITE), 65756deab07SRod Evans MAP_PRIVATE)) == MAP_FAILED) 65856deab07SRod Evans return (NULL); 65956deab07SRod Evans } 66056deab07SRod Evans /* 66156deab07SRod Evans * Determine whether this string already exists. 66256deab07SRod Evans */ 66356deab07SRod Evans pnbuf->pn_name = name; 66456deab07SRod Evans if ((pnbuf->pn_hash = hash) == 0) 66556deab07SRod Evans pnbuf->pn_hash = sgs_str_hash(name); 66656deab07SRod Evans 66756deab07SRod Evans if ((pnp = avl_find(stravl, pnbuf, &where)) != NULL) 66856deab07SRod Evans return (pnp->pn_name); 66956deab07SRod Evans 67056deab07SRod Evans /* 67156deab07SRod Evans * Allocate a string buffer if one does not exist, or if there is 67256deab07SRod Evans * insufficient space for the new string in any existing buffer. 67356deab07SRod Evans */ 67456deab07SRod Evans if ((strbuf == NULL) || (nsize > strsize)) { 67556deab07SRod Evans strsize = S_ROUND(nsize, syspagsz); 67656deab07SRod Evans 67756deab07SRod Evans if ((strbuf = dz_map(0, 0, strsize, (PROT_READ | PROT_WRITE), 67856deab07SRod Evans MAP_PRIVATE)) == MAP_FAILED) 67956deab07SRod Evans return (NULL); 68056deab07SRod Evans } 68156deab07SRod Evans 68256deab07SRod Evans (void) memcpy(strbuf, name, nsize); 68356deab07SRod Evans pnp = pnbuf; 68456deab07SRod Evans pnp->pn_name = strbuf; 68556deab07SRod Evans avl_insert(stravl, pnp, where); 68656deab07SRod Evans 68756deab07SRod Evans strbuf += nsize; 68856deab07SRod Evans strsize -= nsize; 68956deab07SRod Evans pnbuf++; 69056deab07SRod Evans pnsize -= sizeof (PathNode); 69156deab07SRod Evans return (pnp->pn_name); 69256deab07SRod Evans } 69356deab07SRod Evans 6947c478bd9Sstevel@tonic-gate /* 6957c478bd9Sstevel@tonic-gate * Prior to calling an object, either via a .plt or through dlsym(), make sure 6967c478bd9Sstevel@tonic-gate * its .init has fired. Through topological sorting, ld.so.1 attempts to fire 6977c478bd9Sstevel@tonic-gate * init's in the correct order, however, this order is typically based on needed 6987c478bd9Sstevel@tonic-gate * dependencies and non-lazy relocation bindings. Lazy relocations (.plts) can 6997c478bd9Sstevel@tonic-gate * still occur and result in bindings that were not captured during topological 7007c478bd9Sstevel@tonic-gate * sorting. This routine compensates for this lack of binding information, and 7017c478bd9Sstevel@tonic-gate * provides for dynamic .init firing. 7027c478bd9Sstevel@tonic-gate */ 7037c478bd9Sstevel@tonic-gate void 7049aa23310Srie is_dep_init(Rt_map *dlmp, Rt_map *clmp) 7057c478bd9Sstevel@tonic-gate { 7069aa23310Srie Rt_map **tobj; 7077c478bd9Sstevel@tonic-gate 7087c478bd9Sstevel@tonic-gate /* 7097c478bd9Sstevel@tonic-gate * If the caller is an auditor, and the destination isn't, then don't 7107c478bd9Sstevel@tonic-gate * run any .inits (see comments in load_completion()). 7117c478bd9Sstevel@tonic-gate */ 7127c478bd9Sstevel@tonic-gate if ((LIST(clmp)->lm_flags & LML_FLG_NOAUDIT) && 7137c478bd9Sstevel@tonic-gate (LIST(clmp) != LIST(dlmp))) 7147c478bd9Sstevel@tonic-gate return; 7157c478bd9Sstevel@tonic-gate 71656deab07SRod Evans if ((dlmp == clmp) || (rtld_flags & RT_FL_INITFIRST)) 7177c478bd9Sstevel@tonic-gate return; 7187c478bd9Sstevel@tonic-gate 7197c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & (FLG_RT_RELOCED | FLG_RT_INITDONE)) == 7207c478bd9Sstevel@tonic-gate (FLG_RT_RELOCED | FLG_RT_INITDONE)) 7217c478bd9Sstevel@tonic-gate return; 7227c478bd9Sstevel@tonic-gate 7237c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & (FLG_RT_RELOCED | FLG_RT_INITCALL)) == 7247c478bd9Sstevel@tonic-gate (FLG_RT_RELOCED | FLG_RT_INITCALL)) { 7255aefb655Srie DBG_CALL(Dbg_util_no_init(dlmp)); 7267c478bd9Sstevel@tonic-gate return; 7277c478bd9Sstevel@tonic-gate } 7287c478bd9Sstevel@tonic-gate 7297c478bd9Sstevel@tonic-gate if ((tobj = calloc(2, sizeof (Rt_map *))) != NULL) { 7307c478bd9Sstevel@tonic-gate tobj[0] = dlmp; 7317c478bd9Sstevel@tonic-gate call_init(tobj, DBG_INIT_DYN); 7327c478bd9Sstevel@tonic-gate } 7337c478bd9Sstevel@tonic-gate } 7347c478bd9Sstevel@tonic-gate 7357c478bd9Sstevel@tonic-gate /* 7367c478bd9Sstevel@tonic-gate * Execute .{preinit|init|fini}array sections 7377c478bd9Sstevel@tonic-gate */ 7387c478bd9Sstevel@tonic-gate void 7395aefb655Srie call_array(Addr *array, uint_t arraysz, Rt_map *lmp, Word shtype) 7407c478bd9Sstevel@tonic-gate { 7415aefb655Srie int start, stop, incr, ndx; 7427c478bd9Sstevel@tonic-gate uint_t arraycnt = (uint_t)(arraysz / sizeof (Addr)); 7437c478bd9Sstevel@tonic-gate 7447c478bd9Sstevel@tonic-gate if (array == NULL) 7457c478bd9Sstevel@tonic-gate return; 7467c478bd9Sstevel@tonic-gate 7477c478bd9Sstevel@tonic-gate /* 7487c478bd9Sstevel@tonic-gate * initarray & preinitarray are walked from beginning to end - while 7497c478bd9Sstevel@tonic-gate * finiarray is walked from end to beginning. 7507c478bd9Sstevel@tonic-gate */ 7517c478bd9Sstevel@tonic-gate if (shtype == SHT_FINI_ARRAY) { 7527c478bd9Sstevel@tonic-gate start = arraycnt - 1; 7537c478bd9Sstevel@tonic-gate stop = incr = -1; 7547c478bd9Sstevel@tonic-gate } else { 7557c478bd9Sstevel@tonic-gate start = 0; 7567c478bd9Sstevel@tonic-gate stop = arraycnt; 7577c478bd9Sstevel@tonic-gate incr = 1; 7587c478bd9Sstevel@tonic-gate } 7597c478bd9Sstevel@tonic-gate 7607c478bd9Sstevel@tonic-gate /* 7617c478bd9Sstevel@tonic-gate * Call the .*array[] entries 7627c478bd9Sstevel@tonic-gate */ 7635aefb655Srie for (ndx = start; ndx != stop; ndx += incr) { 76410a4fa49Srie void (*fptr)(void) = (void(*)())array[ndx]; 7657c478bd9Sstevel@tonic-gate 7665aefb655Srie DBG_CALL(Dbg_util_call_array(lmp, (void *)fptr, ndx, shtype)); 7677c478bd9Sstevel@tonic-gate 768eccf73c8Srie leave(LIST(lmp), 0); 7697c478bd9Sstevel@tonic-gate (*fptr)(); 770eccf73c8Srie (void) enter(0); 7717c478bd9Sstevel@tonic-gate } 7727c478bd9Sstevel@tonic-gate } 7737c478bd9Sstevel@tonic-gate 7747c478bd9Sstevel@tonic-gate 7757c478bd9Sstevel@tonic-gate /* 7767c478bd9Sstevel@tonic-gate * Execute any .init sections. These are passed to us in an lmp array which 7777c478bd9Sstevel@tonic-gate * (by default) will have been sorted. 7787c478bd9Sstevel@tonic-gate */ 7797c478bd9Sstevel@tonic-gate void 7809aa23310Srie call_init(Rt_map **tobj, int flag) 7817c478bd9Sstevel@tonic-gate { 7829aa23310Srie Rt_map **_tobj, **_nobj; 78357ef7aa9SRod Evans static APlist *pending = NULL; 7847c478bd9Sstevel@tonic-gate 7857c478bd9Sstevel@tonic-gate /* 7867c478bd9Sstevel@tonic-gate * If we're in the middle of an INITFIRST, this must complete before 7877c478bd9Sstevel@tonic-gate * any new init's are fired. In this case add the object list to the 7887c478bd9Sstevel@tonic-gate * pending queue and return. We'll pick up the queue after any 7897c478bd9Sstevel@tonic-gate * INITFIRST objects have their init's fired. 7907c478bd9Sstevel@tonic-gate */ 7917c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_INITFIRST) { 79257ef7aa9SRod Evans (void) aplist_append(&pending, tobj, AL_CNT_PENDING); 7937c478bd9Sstevel@tonic-gate return; 7947c478bd9Sstevel@tonic-gate } 7957c478bd9Sstevel@tonic-gate 7967c478bd9Sstevel@tonic-gate /* 7977c478bd9Sstevel@tonic-gate * Traverse the tobj array firing each objects init. 7987c478bd9Sstevel@tonic-gate */ 7997c478bd9Sstevel@tonic-gate for (_tobj = _nobj = tobj, _nobj++; *_tobj != NULL; _tobj++, _nobj++) { 8009aa23310Srie Rt_map *lmp = *_tobj; 8019aa23310Srie void (*iptr)() = INIT(lmp); 802dde769a2SRod Evans uint_t rtldflags; 8037c478bd9Sstevel@tonic-gate 8047c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_INITCALL) 8057c478bd9Sstevel@tonic-gate continue; 8067c478bd9Sstevel@tonic-gate 8077c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_INITCALL; 8087c478bd9Sstevel@tonic-gate 809dde769a2SRod Evans /* 810dde769a2SRod Evans * It is possible, that during the initial handshake with libc, 811dde769a2SRod Evans * an interposition object has resolved a symbol binding, and 812dde769a2SRod Evans * that this objects .init must be fired. As we're about to 813dde769a2SRod Evans * run user code, make sure any dynamic linking errors remain 814dde769a2SRod Evans * internal (ie., only obtainable from dlerror()), and are not 815dde769a2SRod Evans * flushed to stderr. 816dde769a2SRod Evans */ 817dde769a2SRod Evans rtldflags = (rtld_flags & RT_FL_APPLIC) ? 0 : RT_FL_APPLIC; 818dde769a2SRod Evans rtld_flags |= rtldflags; 819dde769a2SRod Evans 8207c478bd9Sstevel@tonic-gate /* 8217c478bd9Sstevel@tonic-gate * Establish an initfirst state if necessary - no other inits 822dffec89cSrie * will be fired (because of additional relocation bindings) 823dffec89cSrie * when in this state. 8247c478bd9Sstevel@tonic-gate */ 8257c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_INITFRST) 8267c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_INITFIRST; 8277c478bd9Sstevel@tonic-gate 82856deab07SRod Evans if (INITARRAY(lmp) || iptr) 8295aefb655Srie DBG_CALL(Dbg_util_call_init(lmp, flag)); 8307c478bd9Sstevel@tonic-gate 8317c478bd9Sstevel@tonic-gate if (iptr) { 832eccf73c8Srie leave(LIST(lmp), 0); 8337c478bd9Sstevel@tonic-gate (*iptr)(); 834eccf73c8Srie (void) enter(0); 8357c478bd9Sstevel@tonic-gate } 8367c478bd9Sstevel@tonic-gate 8377c478bd9Sstevel@tonic-gate call_array(INITARRAY(lmp), INITARRAYSZ(lmp), lmp, 8387c478bd9Sstevel@tonic-gate SHT_INIT_ARRAY); 8397c478bd9Sstevel@tonic-gate 8407c478bd9Sstevel@tonic-gate if (INITARRAY(lmp) || iptr) 8415aefb655Srie DBG_CALL(Dbg_util_call_init(lmp, DBG_INIT_DONE)); 8427c478bd9Sstevel@tonic-gate 843dde769a2SRod Evans /* 844dde769a2SRod Evans * Return to a non-application setting if necessary. 845dde769a2SRod Evans */ 846dde769a2SRod Evans rtld_flags &= ~rtldflags; 847dde769a2SRod Evans 8487c478bd9Sstevel@tonic-gate /* 8497c478bd9Sstevel@tonic-gate * Set the initdone flag regardless of whether this object 8507c478bd9Sstevel@tonic-gate * actually contains an .init section. This flag prevents us 8517c478bd9Sstevel@tonic-gate * from processing this section again for an .init and also 8527c478bd9Sstevel@tonic-gate * signifies that a .fini must be called should it exist. 8537c478bd9Sstevel@tonic-gate * Clear the sort field for use in later .fini processing. 8547c478bd9Sstevel@tonic-gate */ 8557c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_INITDONE; 856dffec89cSrie SORTVAL(lmp) = -1; 8577c478bd9Sstevel@tonic-gate 8587c478bd9Sstevel@tonic-gate /* 8597c478bd9Sstevel@tonic-gate * If we're firing an INITFIRST object, and other objects must 8607c478bd9Sstevel@tonic-gate * be fired which are not INITFIRST, make sure we grab any 8617c478bd9Sstevel@tonic-gate * pending objects that might have been delayed as this 8627c478bd9Sstevel@tonic-gate * INITFIRST was processed. 8637c478bd9Sstevel@tonic-gate */ 8647c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_INITFIRST) && 8657c478bd9Sstevel@tonic-gate ((*_nobj == NULL) || !(FLAGS(*_nobj) & FLG_RT_INITFRST))) { 86657ef7aa9SRod Evans Aliste idx; 86757ef7aa9SRod Evans Rt_map **pobj; 8687c478bd9Sstevel@tonic-gate 8697c478bd9Sstevel@tonic-gate rtld_flags &= ~RT_FL_INITFIRST; 8707c478bd9Sstevel@tonic-gate 87157ef7aa9SRod Evans for (APLIST_TRAVERSE(pending, idx, pobj)) { 87257ef7aa9SRod Evans aplist_delete(pending, &idx); 8737c478bd9Sstevel@tonic-gate call_init(pobj, DBG_INIT_PEND); 8747c478bd9Sstevel@tonic-gate } 8757c478bd9Sstevel@tonic-gate } 8767c478bd9Sstevel@tonic-gate } 8777c478bd9Sstevel@tonic-gate free(tobj); 8787c478bd9Sstevel@tonic-gate } 8797c478bd9Sstevel@tonic-gate 8807c478bd9Sstevel@tonic-gate /* 8817c478bd9Sstevel@tonic-gate * Function called by atexit(3C). Calls all .fini sections related with the 8827c478bd9Sstevel@tonic-gate * mains dependent shared libraries in the order in which the shared libraries 8837c478bd9Sstevel@tonic-gate * have been loaded. Skip any .fini defined in the main executable, as this 8847c478bd9Sstevel@tonic-gate * will be called by crt0 (main was never marked as initdone). 8857c478bd9Sstevel@tonic-gate */ 8867c478bd9Sstevel@tonic-gate void 8877c478bd9Sstevel@tonic-gate call_fini(Lm_list * lml, Rt_map ** tobj) 8887c478bd9Sstevel@tonic-gate { 889dffec89cSrie Rt_map **_tobj; 8907c478bd9Sstevel@tonic-gate 8917c478bd9Sstevel@tonic-gate for (_tobj = tobj; *_tobj != NULL; _tobj++) { 892cce0e03bSab Rt_map *clmp, * lmp = *_tobj; 893cce0e03bSab Aliste idx; 894cce0e03bSab Bnd_desc *bdp; 8957c478bd9Sstevel@tonic-gate 8967c478bd9Sstevel@tonic-gate /* 89756deab07SRod Evans * Only fire a .fini if the objects corresponding .init has 89856deab07SRod Evans * completed. We collect all .fini sections of objects that 89956deab07SRod Evans * had their .init collected, but that doesn't mean that at 90056deab07SRod Evans * the time of collection, that the .init had completed. 9017c478bd9Sstevel@tonic-gate */ 90256deab07SRod Evans if (FLAGS(lmp) & FLG_RT_INITDONE) { 90310a4fa49Srie void (*fptr)(void) = FINI(lmp); 9047c478bd9Sstevel@tonic-gate 90556deab07SRod Evans if (FINIARRAY(lmp) || fptr) 9065aefb655Srie DBG_CALL(Dbg_util_call_fini(lmp)); 9077c478bd9Sstevel@tonic-gate 9085aefb655Srie call_array(FINIARRAY(lmp), FINIARRAYSZ(lmp), lmp, 9095aefb655Srie SHT_FINI_ARRAY); 9107c478bd9Sstevel@tonic-gate 9117c478bd9Sstevel@tonic-gate if (fptr) { 912eccf73c8Srie leave(LIST(lmp), 0); 9137c478bd9Sstevel@tonic-gate (*fptr)(); 914eccf73c8Srie (void) enter(0); 9157c478bd9Sstevel@tonic-gate } 9167c478bd9Sstevel@tonic-gate } 9177c478bd9Sstevel@tonic-gate 918dffec89cSrie /* 919dffec89cSrie * Skip main, this is explicitly called last in atexit_fini(). 920dffec89cSrie */ 921dffec89cSrie if (FLAGS(lmp) & FLG_RT_ISMAIN) 922dffec89cSrie continue; 923dffec89cSrie 9247c478bd9Sstevel@tonic-gate /* 9257c478bd9Sstevel@tonic-gate * Audit `close' operations at this point. The library has 9267c478bd9Sstevel@tonic-gate * exercised its last instructions (regardless of whether it 9277c478bd9Sstevel@tonic-gate * will be unmapped or not). 9287c478bd9Sstevel@tonic-gate * 9297c478bd9Sstevel@tonic-gate * First call any global auditing. 9307c478bd9Sstevel@tonic-gate */ 9317c478bd9Sstevel@tonic-gate if (lml->lm_tflags & LML_TFLG_AUD_OBJCLOSE) 93257ef7aa9SRod Evans _audit_objclose(auditors->ad_list, lmp); 9337c478bd9Sstevel@tonic-gate 9347c478bd9Sstevel@tonic-gate /* 9357c478bd9Sstevel@tonic-gate * Finally determine whether this object has local auditing 9367c478bd9Sstevel@tonic-gate * requirements by inspecting itself and then its dependencies. 9377c478bd9Sstevel@tonic-gate */ 9387c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_LOCAUDIT) == 0) 9397c478bd9Sstevel@tonic-gate continue; 9407c478bd9Sstevel@tonic-gate 94156deab07SRod Evans if (AFLAGS(lmp) & LML_TFLG_AUD_OBJCLOSE) 94257ef7aa9SRod Evans _audit_objclose(AUDITORS(lmp)->ad_list, lmp); 9437c478bd9Sstevel@tonic-gate 944cce0e03bSab for (APLIST_TRAVERSE(CALLERS(lmp), idx, bdp)) { 9457c478bd9Sstevel@tonic-gate clmp = bdp->b_caller; 9467c478bd9Sstevel@tonic-gate 94756deab07SRod Evans if (AFLAGS(clmp) & LML_TFLG_AUD_OBJCLOSE) { 94857ef7aa9SRod Evans _audit_objclose(AUDITORS(clmp)->ad_list, lmp); 949a953e2b1Srie break; 9507c478bd9Sstevel@tonic-gate } 9517c478bd9Sstevel@tonic-gate } 9527c478bd9Sstevel@tonic-gate } 9535aefb655Srie DBG_CALL(Dbg_bind_plt_summary(lml, M_MACH, pltcnt21d, pltcnt24d, 9545aefb655Srie pltcntu32, pltcntu44, pltcntfull, pltcntfar)); 9557c478bd9Sstevel@tonic-gate 9567c478bd9Sstevel@tonic-gate free(tobj); 9577c478bd9Sstevel@tonic-gate } 9587c478bd9Sstevel@tonic-gate 9597c478bd9Sstevel@tonic-gate void 9607c478bd9Sstevel@tonic-gate atexit_fini() 9617c478bd9Sstevel@tonic-gate { 96257ef7aa9SRod Evans Rt_map **tobj, *lmp; 96357ef7aa9SRod Evans Lm_list *lml; 96457ef7aa9SRod Evans Aliste idx; 9657c478bd9Sstevel@tonic-gate 9668cd45542Sraf (void) enter(0); 9677c478bd9Sstevel@tonic-gate 9687c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_ATEXIT; 9697c478bd9Sstevel@tonic-gate 9707c478bd9Sstevel@tonic-gate lml = &lml_main; 971dffec89cSrie lml->lm_flags |= LML_FLG_ATEXIT; 972883c6d49Srie lml->lm_flags &= ~LML_FLG_INTRPOSETSORT; 9737c478bd9Sstevel@tonic-gate lmp = (Rt_map *)lml->lm_head; 9747c478bd9Sstevel@tonic-gate 9757c478bd9Sstevel@tonic-gate /* 9767c478bd9Sstevel@tonic-gate * Reverse topologically sort the main link-map for .fini execution. 9777c478bd9Sstevel@tonic-gate */ 97843d7826aSRod Evans if (((tobj = tsort(lmp, lml->lm_obj, RT_SORT_FWD)) != NULL) && 9797c478bd9Sstevel@tonic-gate (tobj != (Rt_map **)S_ERROR)) 9807c478bd9Sstevel@tonic-gate call_fini(lml, tobj); 9817c478bd9Sstevel@tonic-gate 9827c478bd9Sstevel@tonic-gate /* 983dffec89cSrie * Add an explicit close to main and ld.so.1. Although main's .fini is 984dffec89cSrie * collected in call_fini() to provide for FINITARRAY processing, its 985dffec89cSrie * audit_objclose is explicitly skipped. This provides for it to be 986dffec89cSrie * called last, here. This is the reverse of the explicit calls to 987dffec89cSrie * audit_objopen() made in setup(). 9887c478bd9Sstevel@tonic-gate */ 98956deab07SRod Evans if ((lml->lm_tflags | AFLAGS(lmp)) & LML_TFLG_AUD_MASK) { 9907c478bd9Sstevel@tonic-gate audit_objclose(lmp, (Rt_map *)lml_rtld.lm_head); 991dffec89cSrie audit_objclose(lmp, lmp); 9927c478bd9Sstevel@tonic-gate } 9937c478bd9Sstevel@tonic-gate 9947c478bd9Sstevel@tonic-gate /* 9957c478bd9Sstevel@tonic-gate * Now that all .fini code has been run, see what unreferenced objects 9969aa23310Srie * remain. 9977c478bd9Sstevel@tonic-gate */ 9987c478bd9Sstevel@tonic-gate unused(lml); 9997c478bd9Sstevel@tonic-gate 10007c478bd9Sstevel@tonic-gate /* 10017c478bd9Sstevel@tonic-gate * Traverse any alternative link-map lists. 10027c478bd9Sstevel@tonic-gate */ 100357ef7aa9SRod Evans for (APLIST_TRAVERSE(dynlm_list, idx, lml)) { 100410a4fa49Srie /* 100510a4fa49Srie * Ignore the base-link-map list, which has already been 100610a4fa49Srie * processed, and the runtime linkers link-map list, which is 100710a4fa49Srie * typically processed last. 100810a4fa49Srie */ 10097c478bd9Sstevel@tonic-gate if (lml->lm_flags & (LML_FLG_BASELM | LML_FLG_RTLDLM)) 10107c478bd9Sstevel@tonic-gate continue; 10117c478bd9Sstevel@tonic-gate 101243d7826aSRod Evans if ((lmp = (Rt_map *)lml->lm_head) == NULL) 10137c478bd9Sstevel@tonic-gate continue; 10147c478bd9Sstevel@tonic-gate 1015dffec89cSrie lml->lm_flags |= LML_FLG_ATEXIT; 1016883c6d49Srie lml->lm_flags &= ~LML_FLG_INTRPOSETSORT; 1017dffec89cSrie 10187c478bd9Sstevel@tonic-gate /* 10197c478bd9Sstevel@tonic-gate * Reverse topologically sort the link-map for .fini execution. 10207c478bd9Sstevel@tonic-gate */ 102143d7826aSRod Evans if (((tobj = tsort(lmp, lml->lm_obj, RT_SORT_FWD)) != NULL) && 10227c478bd9Sstevel@tonic-gate (tobj != (Rt_map **)S_ERROR)) 10237c478bd9Sstevel@tonic-gate call_fini(lml, tobj); 10247c478bd9Sstevel@tonic-gate 10257c478bd9Sstevel@tonic-gate unused(lml); 10267c478bd9Sstevel@tonic-gate } 10277c478bd9Sstevel@tonic-gate 10287c478bd9Sstevel@tonic-gate /* 10297c478bd9Sstevel@tonic-gate * Finally reverse topologically sort the runtime linkers link-map for 10307c478bd9Sstevel@tonic-gate * .fini execution. 10317c478bd9Sstevel@tonic-gate */ 10327c478bd9Sstevel@tonic-gate lml = &lml_rtld; 1033dffec89cSrie lml->lm_flags |= LML_FLG_ATEXIT; 1034883c6d49Srie lml->lm_flags &= ~LML_FLG_INTRPOSETSORT; 10357c478bd9Sstevel@tonic-gate lmp = (Rt_map *)lml->lm_head; 10367c478bd9Sstevel@tonic-gate 103743d7826aSRod Evans if (((tobj = tsort(lmp, lml->lm_obj, RT_SORT_FWD)) != NULL) && 10387c478bd9Sstevel@tonic-gate (tobj != (Rt_map **)S_ERROR)) 10397c478bd9Sstevel@tonic-gate call_fini(lml, tobj); 10407c478bd9Sstevel@tonic-gate 10418cd45542Sraf leave(&lml_main, 0); 10427c478bd9Sstevel@tonic-gate } 10437c478bd9Sstevel@tonic-gate 10447c478bd9Sstevel@tonic-gate 10457c478bd9Sstevel@tonic-gate /* 10467c478bd9Sstevel@tonic-gate * This routine is called to complete any runtime linker activity which may have 10477c478bd9Sstevel@tonic-gate * resulted in objects being loaded. This is called from all user entry points 10487c478bd9Sstevel@tonic-gate * and from any internal dl*() requests. 10497c478bd9Sstevel@tonic-gate */ 10507c478bd9Sstevel@tonic-gate void 10517247f888Srie load_completion(Rt_map *nlmp) 10527c478bd9Sstevel@tonic-gate { 105343d7826aSRod Evans Rt_map **tobj = NULL; 10547247f888Srie Lm_list *nlml; 10557c478bd9Sstevel@tonic-gate 10567c478bd9Sstevel@tonic-gate /* 10577c478bd9Sstevel@tonic-gate * Establish any .init processing. Note, in a world of lazy loading, 10587c478bd9Sstevel@tonic-gate * objects may have been loaded regardless of whether the users request 10597c478bd9Sstevel@tonic-gate * was fulfilled (i.e., a dlsym() request may have failed to find a 10607c478bd9Sstevel@tonic-gate * symbol but objects might have been loaded during its search). Thus, 10617c478bd9Sstevel@tonic-gate * any tsorting starts from the nlmp (new link-maps) pointer and not 10627c478bd9Sstevel@tonic-gate * necessarily from the link-map that may have satisfied the request. 10637c478bd9Sstevel@tonic-gate * 106410a4fa49Srie * Note, the primary link-map has an initialization phase where dynamic 106510a4fa49Srie * .init firing is suppressed. This provides for a simple and clean 106610a4fa49Srie * handshake with the primary link-maps libc, which is important for 106710a4fa49Srie * establishing uberdata. In addition, auditors often obtain handles 106810a4fa49Srie * to primary link-map objects as the objects are loaded, so as to 106910a4fa49Srie * inspect the link-map for symbols. This inspection is allowed without 107010a4fa49Srie * running any code on the primary link-map, as running this code may 107110a4fa49Srie * reenter the auditor, who may not yet have finished its own 10727c478bd9Sstevel@tonic-gate * initialization. 10737c478bd9Sstevel@tonic-gate */ 107410a4fa49Srie if (nlmp) 107510a4fa49Srie nlml = LIST(nlmp); 107610a4fa49Srie 1077b71d513aSedp if (nlmp && nlml->lm_init && ((nlml != &lml_main) || 1078b71d513aSedp (rtld_flags2 & (RT_FL2_PLMSETUP | RT_FL2_NOPLM)))) { 107956deab07SRod Evans if ((tobj = tsort(nlmp, nlml->lm_init, 1080dffec89cSrie RT_SORT_REV)) == (Rt_map **)S_ERROR) 108143d7826aSRod Evans tobj = NULL; 10827c478bd9Sstevel@tonic-gate } 10837c478bd9Sstevel@tonic-gate 108410a4fa49Srie /* 108510a4fa49Srie * Make sure any alternative link-map retrieves any external interfaces 108610a4fa49Srie * and initializes threads. 108710a4fa49Srie */ 108810a4fa49Srie if (nlmp && (nlml != &lml_main)) { 108910a4fa49Srie (void) rt_get_extern(nlml, nlmp); 109010a4fa49Srie rt_thr_init(nlml); 109110a4fa49Srie } 109210a4fa49Srie 109310a4fa49Srie /* 109410a4fa49Srie * Traverse the list of new link-maps and register any dynamic TLS. 109510a4fa49Srie * This storage is established for any objects not on the primary 109610a4fa49Srie * link-map, and for any objects added to the primary link-map after 109710a4fa49Srie * static TLS has been registered. 109810a4fa49Srie */ 1099b71d513aSedp if (nlmp && nlml->lm_tls && ((nlml != &lml_main) || 1100b71d513aSedp (rtld_flags2 & (RT_FL2_PLMSETUP | RT_FL2_NOPLM)))) { 110110a4fa49Srie Rt_map *lmp; 110210a4fa49Srie 1103cb511613SAli Bahrami for (lmp = nlmp; lmp; lmp = NEXT_RT_MAP(lmp)) { 110410a4fa49Srie if (PTTLS(lmp) && PTTLS(lmp)->p_memsz) 110510a4fa49Srie tls_modaddrem(lmp, TM_FLG_MODADD); 110610a4fa49Srie } 110710a4fa49Srie nlml->lm_tls = 0; 110810a4fa49Srie } 110910a4fa49Srie 11107c478bd9Sstevel@tonic-gate /* 11117c478bd9Sstevel@tonic-gate * Fire any .init's. 11127c478bd9Sstevel@tonic-gate */ 11137c478bd9Sstevel@tonic-gate if (tobj) 11147c478bd9Sstevel@tonic-gate call_init(tobj, DBG_INIT_SORT); 11157c478bd9Sstevel@tonic-gate } 11167c478bd9Sstevel@tonic-gate 11177c478bd9Sstevel@tonic-gate /* 11187c478bd9Sstevel@tonic-gate * Append an item to the specified link map control list. 11197c478bd9Sstevel@tonic-gate */ 11207c478bd9Sstevel@tonic-gate void 11217c478bd9Sstevel@tonic-gate lm_append(Lm_list *lml, Aliste lmco, Rt_map *lmp) 11227c478bd9Sstevel@tonic-gate { 11237c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 11247c478bd9Sstevel@tonic-gate int add = 1; 11257c478bd9Sstevel@tonic-gate 11267c478bd9Sstevel@tonic-gate /* 11277c478bd9Sstevel@tonic-gate * Indicate that this link-map list has a new object. 11287c478bd9Sstevel@tonic-gate */ 11297c478bd9Sstevel@tonic-gate (lml->lm_obj)++; 11307c478bd9Sstevel@tonic-gate 11317c478bd9Sstevel@tonic-gate /* 113212b8e62eSrie * If we're about to add a new object to the main link-map control list, 113312b8e62eSrie * alert the debuggers that we are about to mess with this list. 113412b8e62eSrie * Additions of individual objects to the main link-map control list 113512b8e62eSrie * occur during initial setup as the applications immediate dependencies 113612b8e62eSrie * are loaded. Individual objects are also loaded on the main link-map 113712b8e62eSrie * control list of new alternative link-map control lists. 11387c478bd9Sstevel@tonic-gate */ 1139cce0e03bSab if ((lmco == ALIST_OFF_DATA) && 1140cce0e03bSab ((lml->lm_flags & LML_FLG_DBNOTIF) == 0)) 114112b8e62eSrie rd_event(lml, RD_DLACTIVITY, RT_ADD); 11427c478bd9Sstevel@tonic-gate 11437c478bd9Sstevel@tonic-gate /* LINTED */ 1144cce0e03bSab lmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, lmco); 11457c478bd9Sstevel@tonic-gate 11467c478bd9Sstevel@tonic-gate /* 11477c478bd9Sstevel@tonic-gate * A link-map list header points to one of more link-map control lists 11487c478bd9Sstevel@tonic-gate * (see include/rtld.h). The initial list, pointed to by lm_cntl, is 11497c478bd9Sstevel@tonic-gate * the list of relocated objects. Other lists maintain objects that 11507c478bd9Sstevel@tonic-gate * are still being analyzed or relocated. This list provides the core 11517c478bd9Sstevel@tonic-gate * link-map list information used by all ld.so.1 routines. 11527c478bd9Sstevel@tonic-gate */ 11537c478bd9Sstevel@tonic-gate if (lmc->lc_head == NULL) { 11547c478bd9Sstevel@tonic-gate /* 11557c478bd9Sstevel@tonic-gate * If this is the first link-map for the given control list, 11567c478bd9Sstevel@tonic-gate * initialize the list. 11577c478bd9Sstevel@tonic-gate */ 11587c478bd9Sstevel@tonic-gate lmc->lc_head = lmc->lc_tail = lmp; 11597c478bd9Sstevel@tonic-gate add = 0; 11607c478bd9Sstevel@tonic-gate 11619a411307Srie } else if (FLAGS(lmp) & FLG_RT_OBJINTPO) { 11627c478bd9Sstevel@tonic-gate Rt_map *tlmp; 11637c478bd9Sstevel@tonic-gate 11647c478bd9Sstevel@tonic-gate /* 11657c478bd9Sstevel@tonic-gate * If this is an interposer then append the link-map following 11667c478bd9Sstevel@tonic-gate * any other interposers (these are objects that have been 11677c478bd9Sstevel@tonic-gate * previously preloaded, or were identified with -z interpose). 11687c478bd9Sstevel@tonic-gate * Interposers can only be inserted on the first link-map 11697c478bd9Sstevel@tonic-gate * control list, as once relocation has started, interposition 11707c478bd9Sstevel@tonic-gate * from new interposers can't be guaranteed. 11717c478bd9Sstevel@tonic-gate * 11727c478bd9Sstevel@tonic-gate * NOTE: We do not interpose on the head of a list. This model 11737c478bd9Sstevel@tonic-gate * evolved because dynamic executables have already been fully 11747c478bd9Sstevel@tonic-gate * relocated within themselves and thus can't be interposed on. 11757c478bd9Sstevel@tonic-gate * Nowadays it's possible to have shared objects at the head of 11767c478bd9Sstevel@tonic-gate * a list, which conceptually means they could be interposed on. 11777c478bd9Sstevel@tonic-gate * But, shared objects can be created via dldump() and may only 11787c478bd9Sstevel@tonic-gate * be partially relocated (just relatives), in which case they 11797c478bd9Sstevel@tonic-gate * are interposable, but are marked as fixed (ET_EXEC). 11807c478bd9Sstevel@tonic-gate * 11817c478bd9Sstevel@tonic-gate * Thus we really don't have a clear method of deciding when the 11827c478bd9Sstevel@tonic-gate * head of a link-map is interposable. So, to be consistent, 11837c478bd9Sstevel@tonic-gate * for now only add interposers after the link-map lists head 11847c478bd9Sstevel@tonic-gate * object. 11857c478bd9Sstevel@tonic-gate */ 1186cb511613SAli Bahrami for (tlmp = NEXT_RT_MAP(lmc->lc_head); tlmp; 1187cb511613SAli Bahrami tlmp = NEXT_RT_MAP(tlmp)) { 11887c478bd9Sstevel@tonic-gate 11899a411307Srie if (FLAGS(tlmp) & FLG_RT_OBJINTPO) 11907c478bd9Sstevel@tonic-gate continue; 11917c478bd9Sstevel@tonic-gate 11927c478bd9Sstevel@tonic-gate /* 11937c478bd9Sstevel@tonic-gate * Insert the new link-map before this non-interposer, 11947c478bd9Sstevel@tonic-gate * and indicate an interposer is found. 11957c478bd9Sstevel@tonic-gate */ 1196cb511613SAli Bahrami NEXT(PREV_RT_MAP(tlmp)) = (Link_map *)lmp; 11977c478bd9Sstevel@tonic-gate PREV(lmp) = PREV(tlmp); 11987c478bd9Sstevel@tonic-gate 11997c478bd9Sstevel@tonic-gate NEXT(lmp) = (Link_map *)tlmp; 12007c478bd9Sstevel@tonic-gate PREV(tlmp) = (Link_map *)lmp; 12017c478bd9Sstevel@tonic-gate 12027c478bd9Sstevel@tonic-gate lmc->lc_flags |= LMC_FLG_REANALYZE; 12037c478bd9Sstevel@tonic-gate add = 0; 12047c478bd9Sstevel@tonic-gate break; 12057c478bd9Sstevel@tonic-gate } 12067c478bd9Sstevel@tonic-gate } 12077c478bd9Sstevel@tonic-gate 12087c478bd9Sstevel@tonic-gate /* 12097c478bd9Sstevel@tonic-gate * Fall through to appending the new link map to the tail of the list. 12107c478bd9Sstevel@tonic-gate * If we're processing the initial objects of this link-map list, add 12117c478bd9Sstevel@tonic-gate * them to the backward compatibility list. 12127c478bd9Sstevel@tonic-gate */ 12137c478bd9Sstevel@tonic-gate if (add) { 12147c478bd9Sstevel@tonic-gate NEXT(lmc->lc_tail) = (Link_map *)lmp; 12157c478bd9Sstevel@tonic-gate PREV(lmp) = (Link_map *)lmc->lc_tail; 12167c478bd9Sstevel@tonic-gate lmc->lc_tail = lmp; 12177c478bd9Sstevel@tonic-gate } 12187c478bd9Sstevel@tonic-gate 12197c478bd9Sstevel@tonic-gate /* 12207c478bd9Sstevel@tonic-gate * Having added this link-map to a control list, indicate which control 12217c478bd9Sstevel@tonic-gate * list the link-map belongs to. Note, control list information is 12227c478bd9Sstevel@tonic-gate * always maintained as an offset, as the Alist can be reallocated. 12237c478bd9Sstevel@tonic-gate */ 12247c478bd9Sstevel@tonic-gate CNTL(lmp) = lmco; 12257c478bd9Sstevel@tonic-gate 12267c478bd9Sstevel@tonic-gate /* 12277c478bd9Sstevel@tonic-gate * Indicate if an interposer is found. Note that the first object on a 12287c478bd9Sstevel@tonic-gate * link-map can be explicitly defined as an interposer so that it can 12297c478bd9Sstevel@tonic-gate * provide interposition over direct binding requests. 12307c478bd9Sstevel@tonic-gate */ 12319a411307Srie if (FLAGS(lmp) & MSK_RT_INTPOSE) 12327c478bd9Sstevel@tonic-gate lml->lm_flags |= LML_FLG_INTRPOSE; 12337c478bd9Sstevel@tonic-gate 12347c478bd9Sstevel@tonic-gate /* 12357c478bd9Sstevel@tonic-gate * For backward compatibility with debuggers, the link-map list contains 12367c478bd9Sstevel@tonic-gate * pointers to the main control list. 12377c478bd9Sstevel@tonic-gate */ 1238cce0e03bSab if (lmco == ALIST_OFF_DATA) { 12397c478bd9Sstevel@tonic-gate lml->lm_head = lmc->lc_head; 12407c478bd9Sstevel@tonic-gate lml->lm_tail = lmc->lc_tail; 12417c478bd9Sstevel@tonic-gate } 12427c478bd9Sstevel@tonic-gate } 12437c478bd9Sstevel@tonic-gate 12447c478bd9Sstevel@tonic-gate /* 12457c478bd9Sstevel@tonic-gate * Delete an item from the specified link map control list. 12467c478bd9Sstevel@tonic-gate */ 12477c478bd9Sstevel@tonic-gate void 12487c478bd9Sstevel@tonic-gate lm_delete(Lm_list *lml, Rt_map *lmp) 12497c478bd9Sstevel@tonic-gate { 12507c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 12517c478bd9Sstevel@tonic-gate 12527c478bd9Sstevel@tonic-gate /* 12537c478bd9Sstevel@tonic-gate * If the control list pointer hasn't been initialized, this object 12547c478bd9Sstevel@tonic-gate * never got added to a link-map list. 12557c478bd9Sstevel@tonic-gate */ 12567c478bd9Sstevel@tonic-gate if (CNTL(lmp) == 0) 12577c478bd9Sstevel@tonic-gate return; 12587c478bd9Sstevel@tonic-gate 12597c478bd9Sstevel@tonic-gate /* 126012b8e62eSrie * If we're about to delete an object from the main link-map control 126112b8e62eSrie * list, alert the debuggers that we are about to mess with this list. 12627c478bd9Sstevel@tonic-gate */ 1263cce0e03bSab if ((CNTL(lmp) == ALIST_OFF_DATA) && 1264cce0e03bSab ((lml->lm_flags & LML_FLG_DBNOTIF) == 0)) 12657c478bd9Sstevel@tonic-gate rd_event(lml, RD_DLACTIVITY, RT_DELETE); 12667c478bd9Sstevel@tonic-gate 12677c478bd9Sstevel@tonic-gate /* LINTED */ 1268cce0e03bSab lmc = (Lm_cntl *)alist_item_by_offset(lml->lm_lists, CNTL(lmp)); 12697c478bd9Sstevel@tonic-gate 12707c478bd9Sstevel@tonic-gate if (lmc->lc_head == lmp) 1271cb511613SAli Bahrami lmc->lc_head = NEXT_RT_MAP(lmp); 12727c478bd9Sstevel@tonic-gate else 1273cb511613SAli Bahrami NEXT(PREV_RT_MAP(lmp)) = (void *)NEXT(lmp); 12747c478bd9Sstevel@tonic-gate 12757c478bd9Sstevel@tonic-gate if (lmc->lc_tail == lmp) 1276cb511613SAli Bahrami lmc->lc_tail = PREV_RT_MAP(lmp); 12777c478bd9Sstevel@tonic-gate else 1278cb511613SAli Bahrami PREV(NEXT_RT_MAP(lmp)) = PREV(lmp); 12797c478bd9Sstevel@tonic-gate 12807c478bd9Sstevel@tonic-gate /* 12817c478bd9Sstevel@tonic-gate * For backward compatibility with debuggers, the link-map list contains 12827c478bd9Sstevel@tonic-gate * pointers to the main control list. 12837c478bd9Sstevel@tonic-gate */ 1284cce0e03bSab if (lmc == (Lm_cntl *)&lml->lm_lists->al_data) { 12857c478bd9Sstevel@tonic-gate lml->lm_head = lmc->lc_head; 12867c478bd9Sstevel@tonic-gate lml->lm_tail = lmc->lc_tail; 12877c478bd9Sstevel@tonic-gate } 12887c478bd9Sstevel@tonic-gate 12897c478bd9Sstevel@tonic-gate /* 12907c478bd9Sstevel@tonic-gate * Indicate we have one less object on this control list. 12917c478bd9Sstevel@tonic-gate */ 12927c478bd9Sstevel@tonic-gate (lml->lm_obj)--; 12937c478bd9Sstevel@tonic-gate } 12947c478bd9Sstevel@tonic-gate 12957c478bd9Sstevel@tonic-gate /* 12967c478bd9Sstevel@tonic-gate * Move a link-map control list to another. Objects that are being relocated 12977c478bd9Sstevel@tonic-gate * are maintained on secondary control lists. Once their relocation is 12987c478bd9Sstevel@tonic-gate * complete, the entire list is appended to the previous control list, as this 12997c478bd9Sstevel@tonic-gate * list must have been the trigger for generating the new control list. 13007c478bd9Sstevel@tonic-gate */ 13017c478bd9Sstevel@tonic-gate void 13027c478bd9Sstevel@tonic-gate lm_move(Lm_list *lml, Aliste nlmco, Aliste plmco, Lm_cntl *nlmc, Lm_cntl *plmc) 13037c478bd9Sstevel@tonic-gate { 13047c478bd9Sstevel@tonic-gate Rt_map *lmp; 13057c478bd9Sstevel@tonic-gate 13067c478bd9Sstevel@tonic-gate /* 130712b8e62eSrie * If we're about to add a new family of objects to the main link-map 130812b8e62eSrie * control list, alert the debuggers that we are about to mess with this 130912b8e62eSrie * list. Additions of object families to the main link-map control 131012b8e62eSrie * list occur during lazy loading, filtering and dlopen(). 13117c478bd9Sstevel@tonic-gate */ 1312cce0e03bSab if ((plmco == ALIST_OFF_DATA) && 1313cce0e03bSab ((lml->lm_flags & LML_FLG_DBNOTIF) == 0)) 13147c478bd9Sstevel@tonic-gate rd_event(lml, RD_DLACTIVITY, RT_ADD); 13157c478bd9Sstevel@tonic-gate 131612b8e62eSrie DBG_CALL(Dbg_file_cntl(lml, nlmco, plmco)); 131712b8e62eSrie 13187c478bd9Sstevel@tonic-gate /* 13197c478bd9Sstevel@tonic-gate * Indicate each new link-map has been moved to the previous link-map 13207c478bd9Sstevel@tonic-gate * control list. 13217c478bd9Sstevel@tonic-gate */ 132256deab07SRod Evans for (lmp = nlmc->lc_head; lmp; lmp = NEXT_RT_MAP(lmp)) { 13237c478bd9Sstevel@tonic-gate CNTL(lmp) = plmco; 13247c478bd9Sstevel@tonic-gate 132556deab07SRod Evans /* 132656deab07SRod Evans * If these objects are being added to the main link-map 132756deab07SRod Evans * control list, indicate that there are init's available 132856deab07SRod Evans * for harvesting. 132956deab07SRod Evans */ 133056deab07SRod Evans if (plmco == ALIST_OFF_DATA) { 133156deab07SRod Evans lml->lm_init++; 133256deab07SRod Evans lml->lm_flags |= LML_FLG_OBJADDED; 133356deab07SRod Evans } 133456deab07SRod Evans } 133556deab07SRod Evans 13367c478bd9Sstevel@tonic-gate /* 13377c478bd9Sstevel@tonic-gate * Move the new link-map control list, to the callers link-map control 13387c478bd9Sstevel@tonic-gate * list. 13397c478bd9Sstevel@tonic-gate */ 13403dbfc803SRod Evans if (plmc->lc_head == NULL) { 13417c478bd9Sstevel@tonic-gate plmc->lc_head = nlmc->lc_head; 13423dbfc803SRod Evans PREV(nlmc->lc_head) = NULL; 13437c478bd9Sstevel@tonic-gate } else { 13447c478bd9Sstevel@tonic-gate NEXT(plmc->lc_tail) = (Link_map *)nlmc->lc_head; 13457c478bd9Sstevel@tonic-gate PREV(nlmc->lc_head) = (Link_map *)plmc->lc_tail; 13467c478bd9Sstevel@tonic-gate } 13477c478bd9Sstevel@tonic-gate 13487c478bd9Sstevel@tonic-gate plmc->lc_tail = nlmc->lc_tail; 13493dbfc803SRod Evans nlmc->lc_head = nlmc->lc_tail = NULL; 13507c478bd9Sstevel@tonic-gate 13517c478bd9Sstevel@tonic-gate /* 13527c478bd9Sstevel@tonic-gate * For backward compatibility with debuggers, the link-map list contains 13537c478bd9Sstevel@tonic-gate * pointers to the main control list. 13547c478bd9Sstevel@tonic-gate */ 1355cce0e03bSab if (plmco == ALIST_OFF_DATA) { 13567c478bd9Sstevel@tonic-gate lml->lm_head = plmc->lc_head; 13577c478bd9Sstevel@tonic-gate lml->lm_tail = plmc->lc_tail; 13587c478bd9Sstevel@tonic-gate } 13597c478bd9Sstevel@tonic-gate } 13607c478bd9Sstevel@tonic-gate 1361dde769a2SRod Evans /* 1362dde769a2SRod Evans * Create, or assign a link-map control list. Each link-map list contains a 1363dde769a2SRod Evans * main control list, which has an Alist offset of ALIST_OFF_DATA (see the 1364dde769a2SRod Evans * description in include/rtld.h). During the initial construction of a 1365dde769a2SRod Evans * process, objects are added to this main control list. This control list is 1366dde769a2SRod Evans * never deleted, unless an alternate link-map list has been requested (say for 1367dde769a2SRod Evans * auditors), and the associated objects could not be loaded or relocated. 1368dde769a2SRod Evans * 1369dde769a2SRod Evans * Once relocation has started, any lazy loadable objects, or filtees, are 1370dde769a2SRod Evans * processed on a new, temporary control list. Only when these objects have 1371dde769a2SRod Evans * been fully relocated, are they moved to the main link-map control list. 1372dde769a2SRod Evans * Once the objects are moved, this temporary control list is deleted (see 1373dde769a2SRod Evans * remove_cntl()). 1374dde769a2SRod Evans * 1375dde769a2SRod Evans * A dlopen() always requires a new temporary link-map control list. 1376dde769a2SRod Evans * Typically, a dlopen() occurs on a link-map list that had already started 1377dde769a2SRod Evans * relocation, however, auditors can dlopen() objects on the main link-map 1378dde769a2SRod Evans * list while under initial construction, before any relocation has begun. 1379dde769a2SRod Evans * Hence, dlopen() requests are explicitly flagged. 1380dde769a2SRod Evans */ 1381dde769a2SRod Evans Aliste 1382dde769a2SRod Evans create_cntl(Lm_list *lml, int dlopen) 1383dde769a2SRod Evans { 1384dde769a2SRod Evans /* 1385dde769a2SRod Evans * If the head link-map object has already been relocated, create a 1386dde769a2SRod Evans * new, temporary, control list. 1387dde769a2SRod Evans */ 1388dde769a2SRod Evans if (dlopen || (lml->lm_head == NULL) || 1389dde769a2SRod Evans (FLAGS(lml->lm_head) & FLG_RT_RELOCED)) { 1390dde769a2SRod Evans Lm_cntl *lmc; 1391dde769a2SRod Evans 1392dde769a2SRod Evans if ((lmc = alist_append(&lml->lm_lists, NULL, sizeof (Lm_cntl), 1393dde769a2SRod Evans AL_CNT_LMLISTS)) == NULL) 1394dde769a2SRod Evans return (NULL); 1395dde769a2SRod Evans 1396dde769a2SRod Evans return ((Aliste)((char *)lmc - (char *)lml->lm_lists)); 1397dde769a2SRod Evans } 1398dde769a2SRod Evans 1399dde769a2SRod Evans return (ALIST_OFF_DATA); 1400dde769a2SRod Evans } 1401dde769a2SRod Evans 14027c478bd9Sstevel@tonic-gate /* 14037c478bd9Sstevel@tonic-gate * Environment variables can have a variety of defined permutations, and thus 14047c478bd9Sstevel@tonic-gate * the following infrastructure exists to allow this variety and to select the 14057c478bd9Sstevel@tonic-gate * required definition. 14067c478bd9Sstevel@tonic-gate * 14077c478bd9Sstevel@tonic-gate * Environment variables can be defined as 32- or 64-bit specific, and if so 14087c478bd9Sstevel@tonic-gate * they will take precedence over any instruction set neutral form. Typically 14097c478bd9Sstevel@tonic-gate * this is only useful when the environment value is an informational string. 14107c478bd9Sstevel@tonic-gate * 14117c478bd9Sstevel@tonic-gate * Environment variables may be obtained from the standard user environment or 14127c478bd9Sstevel@tonic-gate * from a configuration file. The latter provides a fallback if no user 14137c478bd9Sstevel@tonic-gate * environment setting is found, and can take two forms: 14147c478bd9Sstevel@tonic-gate * 141543d7826aSRod Evans * - a replaceable definition - this will be used if no user environment 14167c478bd9Sstevel@tonic-gate * setting has been seen, or 14177c478bd9Sstevel@tonic-gate * 141843d7826aSRod Evans * - an permanent definition - this will be used no matter what user 14197c478bd9Sstevel@tonic-gate * environment setting is seen. In the case of list variables it will be 14207c478bd9Sstevel@tonic-gate * appended to any process environment setting seen. 14217c478bd9Sstevel@tonic-gate * 14227c478bd9Sstevel@tonic-gate * Environment variables can be defined without a value (ie. LD_XXXX=) so as to 14237c478bd9Sstevel@tonic-gate * override any replaceable environment variables from a configuration file. 14247c478bd9Sstevel@tonic-gate */ 14257c478bd9Sstevel@tonic-gate static u_longlong_t rplgen; /* replaceable generic */ 14267c478bd9Sstevel@tonic-gate /* variables */ 14277c478bd9Sstevel@tonic-gate static u_longlong_t rplisa; /* replaceable ISA specific */ 14287c478bd9Sstevel@tonic-gate /* variables */ 14297c478bd9Sstevel@tonic-gate static u_longlong_t prmgen; /* permanent generic */ 14307c478bd9Sstevel@tonic-gate /* variables */ 14317c478bd9Sstevel@tonic-gate static u_longlong_t prmisa; /* permanent ISA specific */ 14327c478bd9Sstevel@tonic-gate /* variables */ 14337c478bd9Sstevel@tonic-gate 14347c478bd9Sstevel@tonic-gate /* 14357c478bd9Sstevel@tonic-gate * Classify an environment variables type. 14367c478bd9Sstevel@tonic-gate */ 14377c478bd9Sstevel@tonic-gate #define ENV_TYP_IGNORE 0x1 /* ignore - variable is for */ 14387c478bd9Sstevel@tonic-gate /* the wrong ISA */ 14397c478bd9Sstevel@tonic-gate #define ENV_TYP_ISA 0x2 /* variable is ISA specific */ 14407c478bd9Sstevel@tonic-gate #define ENV_TYP_CONFIG 0x4 /* variable obtained from a */ 14417c478bd9Sstevel@tonic-gate /* config file */ 14427c478bd9Sstevel@tonic-gate #define ENV_TYP_PERMANT 0x8 /* variable is permanent */ 14437c478bd9Sstevel@tonic-gate 14447c478bd9Sstevel@tonic-gate /* 14457c478bd9Sstevel@tonic-gate * Identify all environment variables. 14467c478bd9Sstevel@tonic-gate */ 14477c478bd9Sstevel@tonic-gate #define ENV_FLG_AUDIT 0x0000000001ULL 14487c478bd9Sstevel@tonic-gate #define ENV_FLG_AUDIT_ARGS 0x0000000002ULL 14497c478bd9Sstevel@tonic-gate #define ENV_FLG_BIND_NOW 0x0000000004ULL 14507c478bd9Sstevel@tonic-gate #define ENV_FLG_BIND_NOT 0x0000000008ULL 14517c478bd9Sstevel@tonic-gate #define ENV_FLG_BINDINGS 0x0000000010ULL 145256deab07SRod Evans 14537c478bd9Sstevel@tonic-gate #define ENV_FLG_CONFGEN 0x0000000040ULL 14547c478bd9Sstevel@tonic-gate #define ENV_FLG_CONFIG 0x0000000080ULL 14557c478bd9Sstevel@tonic-gate #define ENV_FLG_DEBUG 0x0000000100ULL 14567c478bd9Sstevel@tonic-gate #define ENV_FLG_DEBUG_OUTPUT 0x0000000200ULL 14577c478bd9Sstevel@tonic-gate #define ENV_FLG_DEMANGLE 0x0000000400ULL 14587c478bd9Sstevel@tonic-gate #define ENV_FLG_FLAGS 0x0000000800ULL 14597c478bd9Sstevel@tonic-gate #define ENV_FLG_INIT 0x0000001000ULL 14607c478bd9Sstevel@tonic-gate #define ENV_FLG_LIBPATH 0x0000002000ULL 14617c478bd9Sstevel@tonic-gate #define ENV_FLG_LOADAVAIL 0x0000004000ULL 14627c478bd9Sstevel@tonic-gate #define ENV_FLG_LOADFLTR 0x0000008000ULL 14637c478bd9Sstevel@tonic-gate #define ENV_FLG_NOAUDIT 0x0000010000ULL 14647c478bd9Sstevel@tonic-gate #define ENV_FLG_NOAUXFLTR 0x0000020000ULL 14657c478bd9Sstevel@tonic-gate #define ENV_FLG_NOBAPLT 0x0000040000ULL 14667c478bd9Sstevel@tonic-gate #define ENV_FLG_NOCONFIG 0x0000080000ULL 14677c478bd9Sstevel@tonic-gate #define ENV_FLG_NODIRCONFIG 0x0000100000ULL 14687c478bd9Sstevel@tonic-gate #define ENV_FLG_NODIRECT 0x0000200000ULL 14697c478bd9Sstevel@tonic-gate #define ENV_FLG_NOENVCONFIG 0x0000400000ULL 14707c478bd9Sstevel@tonic-gate #define ENV_FLG_NOLAZY 0x0000800000ULL 14717c478bd9Sstevel@tonic-gate #define ENV_FLG_NOOBJALTER 0x0001000000ULL 14727c478bd9Sstevel@tonic-gate #define ENV_FLG_NOVERSION 0x0002000000ULL 14737c478bd9Sstevel@tonic-gate #define ENV_FLG_PRELOAD 0x0004000000ULL 14747c478bd9Sstevel@tonic-gate #define ENV_FLG_PROFILE 0x0008000000ULL 14757c478bd9Sstevel@tonic-gate #define ENV_FLG_PROFILE_OUTPUT 0x0010000000ULL 14767c478bd9Sstevel@tonic-gate #define ENV_FLG_SIGNAL 0x0020000000ULL 14777c478bd9Sstevel@tonic-gate #define ENV_FLG_TRACE_OBJS 0x0040000000ULL 14787c478bd9Sstevel@tonic-gate #define ENV_FLG_TRACE_PTHS 0x0080000000ULL 14797c478bd9Sstevel@tonic-gate #define ENV_FLG_UNREF 0x0100000000ULL 14807c478bd9Sstevel@tonic-gate #define ENV_FLG_UNUSED 0x0200000000ULL 14817c478bd9Sstevel@tonic-gate #define ENV_FLG_VERBOSE 0x0400000000ULL 14827c478bd9Sstevel@tonic-gate #define ENV_FLG_WARN 0x0800000000ULL 14837c478bd9Sstevel@tonic-gate #define ENV_FLG_NOFLTCONFIG 0x1000000000ULL 1484dffec89cSrie #define ENV_FLG_BIND_LAZY 0x2000000000ULL 1485df4628cbSrie #define ENV_FLG_NOUNRESWEAK 0x4000000000ULL 1486dae2dfb7Srie #define ENV_FLG_NOPAREXT 0x8000000000ULL 14877c478bd9Sstevel@tonic-gate 14887c478bd9Sstevel@tonic-gate #define SEL_REPLACE 0x0001 14897c478bd9Sstevel@tonic-gate #define SEL_PERMANT 0x0002 14907c478bd9Sstevel@tonic-gate #define SEL_ACT_RT 0x0100 /* setting rtld_flags */ 14917c478bd9Sstevel@tonic-gate #define SEL_ACT_RT2 0x0200 /* setting rtld_flags2 */ 14927c478bd9Sstevel@tonic-gate #define SEL_ACT_STR 0x0400 /* setting string value */ 14937c478bd9Sstevel@tonic-gate #define SEL_ACT_LML 0x0800 /* setting lml_flags */ 14947c478bd9Sstevel@tonic-gate #define SEL_ACT_LMLT 0x1000 /* setting lml_tflags */ 14957c478bd9Sstevel@tonic-gate #define SEL_ACT_SPEC_1 0x2000 /* For FLG_{FLAGS, LIBPATH} */ 14967c478bd9Sstevel@tonic-gate #define SEL_ACT_SPEC_2 0x4000 /* need special handling */ 14977c478bd9Sstevel@tonic-gate 14987c478bd9Sstevel@tonic-gate /* 14997c478bd9Sstevel@tonic-gate * Pattern match an LD_XXXX environment variable. s1 points to the XXXX part 15007c478bd9Sstevel@tonic-gate * and len specifies its length (comparing a strings length before the string 15017c478bd9Sstevel@tonic-gate * itself speed things up). s2 points to the token itself which has already 15027c478bd9Sstevel@tonic-gate * had any leading white-space removed. 15037c478bd9Sstevel@tonic-gate */ 15047c478bd9Sstevel@tonic-gate static void 15057c478bd9Sstevel@tonic-gate ld_generic_env(const char *s1, size_t len, const char *s2, Word *lmflags, 15067c478bd9Sstevel@tonic-gate Word *lmtflags, uint_t env_flags, int aout) 15077c478bd9Sstevel@tonic-gate { 15087c478bd9Sstevel@tonic-gate u_longlong_t variable = 0; 150910a4fa49Srie ushort_t select = 0; 151010a4fa49Srie const char **str; 151110a4fa49Srie Word val = 0; 15127c478bd9Sstevel@tonic-gate 15137c478bd9Sstevel@tonic-gate /* 15147c478bd9Sstevel@tonic-gate * Determine whether we're dealing with a replaceable or permanent 15157c478bd9Sstevel@tonic-gate * string. 15167c478bd9Sstevel@tonic-gate */ 15177c478bd9Sstevel@tonic-gate if (env_flags & ENV_TYP_PERMANT) { 15187c478bd9Sstevel@tonic-gate /* 15197c478bd9Sstevel@tonic-gate * If the string is from a configuration file and defined as 15207c478bd9Sstevel@tonic-gate * permanent, assign it as permanent. 15217c478bd9Sstevel@tonic-gate */ 15227c478bd9Sstevel@tonic-gate select |= SEL_PERMANT; 15237c478bd9Sstevel@tonic-gate } else 15247c478bd9Sstevel@tonic-gate select |= SEL_REPLACE; 15257c478bd9Sstevel@tonic-gate 15267c478bd9Sstevel@tonic-gate /* 15277c478bd9Sstevel@tonic-gate * Parse the variable given. 15287c478bd9Sstevel@tonic-gate * 15297c478bd9Sstevel@tonic-gate * The LD_AUDIT family. 15307c478bd9Sstevel@tonic-gate */ 15317c478bd9Sstevel@tonic-gate if (*s1 == 'A') { 15327c478bd9Sstevel@tonic-gate if ((len == MSG_LD_AUDIT_SIZE) && (strncmp(s1, 15337c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_AUDIT), MSG_LD_AUDIT_SIZE) == 0)) { 15347c478bd9Sstevel@tonic-gate /* 15357c478bd9Sstevel@tonic-gate * Replaceable and permanent audit objects can exist. 15367c478bd9Sstevel@tonic-gate */ 15377c478bd9Sstevel@tonic-gate select |= SEL_ACT_STR; 1538dde769a2SRod Evans str = (select & SEL_REPLACE) ? &rpl_audit : &prm_audit; 15397c478bd9Sstevel@tonic-gate variable = ENV_FLG_AUDIT; 15407c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_AUDIT_ARGS_SIZE) && 15417c478bd9Sstevel@tonic-gate (strncmp(s1, MSG_ORIG(MSG_LD_AUDIT_ARGS), 15427c478bd9Sstevel@tonic-gate MSG_LD_AUDIT_ARGS_SIZE) == 0)) { 15437c478bd9Sstevel@tonic-gate /* 15447c478bd9Sstevel@tonic-gate * A specialized variable for plt_exit() use, not 15457c478bd9Sstevel@tonic-gate * documented for general use. 15467c478bd9Sstevel@tonic-gate */ 15477c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 15487c478bd9Sstevel@tonic-gate variable = ENV_FLG_AUDIT_ARGS; 15497c478bd9Sstevel@tonic-gate } 15507c478bd9Sstevel@tonic-gate } 15517c478bd9Sstevel@tonic-gate /* 155256deab07SRod Evans * The LD_BIND family. 15537c478bd9Sstevel@tonic-gate */ 15547c478bd9Sstevel@tonic-gate else if (*s1 == 'B') { 1555dffec89cSrie if ((len == MSG_LD_BIND_LAZY_SIZE) && (strncmp(s1, 1556dffec89cSrie MSG_ORIG(MSG_LD_BIND_LAZY), 1557dffec89cSrie MSG_LD_BIND_LAZY_SIZE) == 0)) { 1558dffec89cSrie select |= SEL_ACT_RT2; 1559dffec89cSrie val = RT_FL2_BINDLAZY; 1560dffec89cSrie variable = ENV_FLG_BIND_LAZY; 1561dffec89cSrie } else if ((len == MSG_LD_BIND_NOW_SIZE) && (strncmp(s1, 15627c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_BIND_NOW), MSG_LD_BIND_NOW_SIZE) == 0)) { 15637c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT2; 15647c478bd9Sstevel@tonic-gate val = RT_FL2_BINDNOW; 15657c478bd9Sstevel@tonic-gate variable = ENV_FLG_BIND_NOW; 15667c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_BIND_NOT_SIZE) && (strncmp(s1, 15677c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_BIND_NOT), MSG_LD_BIND_NOT_SIZE) == 0)) { 15687c478bd9Sstevel@tonic-gate /* 15697c478bd9Sstevel@tonic-gate * Another trick, enabled to help debug AOUT 15707c478bd9Sstevel@tonic-gate * applications under BCP, but not documented for 15717c478bd9Sstevel@tonic-gate * general use. 15727c478bd9Sstevel@tonic-gate */ 15737c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 15747c478bd9Sstevel@tonic-gate val = RT_FL_NOBIND; 15757c478bd9Sstevel@tonic-gate variable = ENV_FLG_BIND_NOT; 15767c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_BINDINGS_SIZE) && (strncmp(s1, 15777c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_BINDINGS), MSG_LD_BINDINGS_SIZE) == 0)) { 15787c478bd9Sstevel@tonic-gate /* 15797c478bd9Sstevel@tonic-gate * This variable is simply for backward compatibility. 15807c478bd9Sstevel@tonic-gate * If this and LD_DEBUG are both specified, only one of 15817c478bd9Sstevel@tonic-gate * the strings is going to get processed. 15827c478bd9Sstevel@tonic-gate */ 15837c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 15847c478bd9Sstevel@tonic-gate variable = ENV_FLG_BINDINGS; 15857c478bd9Sstevel@tonic-gate } 15867c478bd9Sstevel@tonic-gate } 15877c478bd9Sstevel@tonic-gate /* 158856deab07SRod Evans * LD_CONFIG family. 15897c478bd9Sstevel@tonic-gate */ 15907c478bd9Sstevel@tonic-gate else if (*s1 == 'C') { 159156deab07SRod Evans if ((len == MSG_LD_CONFGEN_SIZE) && (strncmp(s1, 15927c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_CONFGEN), MSG_LD_CONFGEN_SIZE) == 0)) { 15937c478bd9Sstevel@tonic-gate /* 15947c478bd9Sstevel@tonic-gate * Set by crle(1) to indicate it's building a 15957c478bd9Sstevel@tonic-gate * configuration file, not documented for general use. 15967c478bd9Sstevel@tonic-gate */ 15977c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 15987c478bd9Sstevel@tonic-gate variable = ENV_FLG_CONFGEN; 15997c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_CONFIG_SIZE) && (strncmp(s1, 16007c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_CONFIG), MSG_LD_CONFIG_SIZE) == 0)) { 16017c478bd9Sstevel@tonic-gate /* 16027c478bd9Sstevel@tonic-gate * Secure applications must use a default configuration 16037c478bd9Sstevel@tonic-gate * file. A setting from a configuration file doesn't 16047c478bd9Sstevel@tonic-gate * make sense (given we must be reading a configuration 16057c478bd9Sstevel@tonic-gate * file to have gotten this). 16067c478bd9Sstevel@tonic-gate */ 16077c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SECURE) || 16087c478bd9Sstevel@tonic-gate (env_flags & ENV_TYP_CONFIG)) 16097c478bd9Sstevel@tonic-gate return; 16107c478bd9Sstevel@tonic-gate select |= SEL_ACT_STR; 16117c478bd9Sstevel@tonic-gate str = &config->c_name; 16127c478bd9Sstevel@tonic-gate variable = ENV_FLG_CONFIG; 16137c478bd9Sstevel@tonic-gate } 16147c478bd9Sstevel@tonic-gate } 16157c478bd9Sstevel@tonic-gate /* 16167c478bd9Sstevel@tonic-gate * The LD_DEBUG family and LD_DEMANGLE. 16177c478bd9Sstevel@tonic-gate */ 16187c478bd9Sstevel@tonic-gate else if (*s1 == 'D') { 16197c478bd9Sstevel@tonic-gate if ((len == MSG_LD_DEBUG_SIZE) && (strncmp(s1, 16207c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_DEBUG), MSG_LD_DEBUG_SIZE) == 0)) { 16217c478bd9Sstevel@tonic-gate select |= SEL_ACT_STR; 1622dde769a2SRod Evans str = (select & SEL_REPLACE) ? &rpl_debug : &prm_debug; 16237c478bd9Sstevel@tonic-gate variable = ENV_FLG_DEBUG; 16247c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_DEBUG_OUTPUT_SIZE) && (strncmp(s1, 16257c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_DEBUG_OUTPUT), 16267c478bd9Sstevel@tonic-gate MSG_LD_DEBUG_OUTPUT_SIZE) == 0)) { 16277c478bd9Sstevel@tonic-gate select |= SEL_ACT_STR; 16287c478bd9Sstevel@tonic-gate str = &dbg_file; 16297c478bd9Sstevel@tonic-gate variable = ENV_FLG_DEBUG_OUTPUT; 16307c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_DEMANGLE_SIZE) && (strncmp(s1, 16317c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_DEMANGLE), MSG_LD_DEMANGLE_SIZE) == 0)) { 16327c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 16337c478bd9Sstevel@tonic-gate val = RT_FL_DEMANGLE; 16347c478bd9Sstevel@tonic-gate variable = ENV_FLG_DEMANGLE; 16357c478bd9Sstevel@tonic-gate } 16367c478bd9Sstevel@tonic-gate } 16377c478bd9Sstevel@tonic-gate /* 16387c478bd9Sstevel@tonic-gate * LD_FLAGS - collect the best variable definition. On completion of 16397c478bd9Sstevel@tonic-gate * environment variable processing pass the result to ld_flags_env() 16407c478bd9Sstevel@tonic-gate * where they'll be decomposed and passed back to this routine. 16417c478bd9Sstevel@tonic-gate */ 16427c478bd9Sstevel@tonic-gate else if (*s1 == 'F') { 16437c478bd9Sstevel@tonic-gate if ((len == MSG_LD_FLAGS_SIZE) && (strncmp(s1, 16447c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_FLAGS), MSG_LD_FLAGS_SIZE) == 0)) { 16457c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_1; 1646dde769a2SRod Evans str = (select & SEL_REPLACE) ? &rpl_ldflags : 1647dde769a2SRod Evans &prm_ldflags; 16487c478bd9Sstevel@tonic-gate variable = ENV_FLG_FLAGS; 16497c478bd9Sstevel@tonic-gate } 16507c478bd9Sstevel@tonic-gate } 16517c478bd9Sstevel@tonic-gate /* 16527c478bd9Sstevel@tonic-gate * LD_INIT (internal, used by ldd(1)). 16537c478bd9Sstevel@tonic-gate */ 16547c478bd9Sstevel@tonic-gate else if (*s1 == 'I') { 16557c478bd9Sstevel@tonic-gate if ((len == MSG_LD_INIT_SIZE) && (strncmp(s1, 16567c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_INIT), MSG_LD_INIT_SIZE) == 0)) { 16577c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 16587c478bd9Sstevel@tonic-gate val = LML_FLG_TRC_INIT; 16597c478bd9Sstevel@tonic-gate variable = ENV_FLG_INIT; 16607c478bd9Sstevel@tonic-gate } 16617c478bd9Sstevel@tonic-gate } 16627c478bd9Sstevel@tonic-gate /* 16637c478bd9Sstevel@tonic-gate * The LD_LIBRARY_PATH and LD_LOAD families. 16647c478bd9Sstevel@tonic-gate */ 16657c478bd9Sstevel@tonic-gate else if (*s1 == 'L') { 16667c478bd9Sstevel@tonic-gate if ((len == MSG_LD_LIBPATH_SIZE) && (strncmp(s1, 16677c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_LIBPATH), MSG_LD_LIBPATH_SIZE) == 0)) { 16687c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_1; 1669dde769a2SRod Evans str = (select & SEL_REPLACE) ? &rpl_libpath : 1670dde769a2SRod Evans &prm_libpath; 16717c478bd9Sstevel@tonic-gate variable = ENV_FLG_LIBPATH; 16727c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_LOADAVAIL_SIZE) && (strncmp(s1, 16737c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_LOADAVAIL), MSG_LD_LOADAVAIL_SIZE) == 0)) { 16747c478bd9Sstevel@tonic-gate /* 16757c478bd9Sstevel@tonic-gate * Internal use by crle(1), not documented for general 16767c478bd9Sstevel@tonic-gate * use. 16777c478bd9Sstevel@tonic-gate */ 16787c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 16797c478bd9Sstevel@tonic-gate val = LML_FLG_LOADAVAIL; 16807c478bd9Sstevel@tonic-gate variable = ENV_FLG_LOADAVAIL; 16817c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_LOADFLTR_SIZE) && (strncmp(s1, 16827c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_LOADFLTR), MSG_LD_LOADFLTR_SIZE) == 0)) { 16837c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 16847c478bd9Sstevel@tonic-gate variable = ENV_FLG_LOADFLTR; 16857c478bd9Sstevel@tonic-gate } 16867c478bd9Sstevel@tonic-gate } 16877c478bd9Sstevel@tonic-gate /* 16887c478bd9Sstevel@tonic-gate * The LD_NO family. 16897c478bd9Sstevel@tonic-gate */ 16907c478bd9Sstevel@tonic-gate else if (*s1 == 'N') { 16917c478bd9Sstevel@tonic-gate if ((len == MSG_LD_NOAUDIT_SIZE) && (strncmp(s1, 16927c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOAUDIT), MSG_LD_NOAUDIT_SIZE) == 0)) { 16937c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 16947c478bd9Sstevel@tonic-gate val = RT_FL_NOAUDIT; 16957c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOAUDIT; 16967c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOAUXFLTR_SIZE) && (strncmp(s1, 16977c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOAUXFLTR), MSG_LD_NOAUXFLTR_SIZE) == 0)) { 16987c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 16997c478bd9Sstevel@tonic-gate val = RT_FL_NOAUXFLTR; 17007c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOAUXFLTR; 17017c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOBAPLT_SIZE) && (strncmp(s1, 17027c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOBAPLT), MSG_LD_NOBAPLT_SIZE) == 0)) { 17037c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 17047c478bd9Sstevel@tonic-gate val = RT_FL_NOBAPLT; 17057c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOBAPLT; 17067c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOCONFIG_SIZE) && (strncmp(s1, 17077c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOCONFIG), MSG_LD_NOCONFIG_SIZE) == 0)) { 17087c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 17097c478bd9Sstevel@tonic-gate val = RT_FL_NOCFG; 17107c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOCONFIG; 17117c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NODIRCONFIG_SIZE) && (strncmp(s1, 17127c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NODIRCONFIG), 17137c478bd9Sstevel@tonic-gate MSG_LD_NODIRCONFIG_SIZE) == 0)) { 17147c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 17157c478bd9Sstevel@tonic-gate val = RT_FL_NODIRCFG; 17167c478bd9Sstevel@tonic-gate variable = ENV_FLG_NODIRCONFIG; 17177c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NODIRECT_SIZE) && (strncmp(s1, 17187c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NODIRECT), MSG_LD_NODIRECT_SIZE) == 0)) { 17197c478bd9Sstevel@tonic-gate select |= SEL_ACT_LMLT; 17207c478bd9Sstevel@tonic-gate val = LML_TFLG_NODIRECT; 17217c478bd9Sstevel@tonic-gate variable = ENV_FLG_NODIRECT; 17227c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOENVCONFIG_SIZE) && (strncmp(s1, 17237c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOENVCONFIG), 17247c478bd9Sstevel@tonic-gate MSG_LD_NOENVCONFIG_SIZE) == 0)) { 17257c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 17267c478bd9Sstevel@tonic-gate val = RT_FL_NOENVCFG; 17277c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOENVCONFIG; 17287c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOFLTCONFIG_SIZE) && (strncmp(s1, 17297c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOFLTCONFIG), 17307c478bd9Sstevel@tonic-gate MSG_LD_NOFLTCONFIG_SIZE) == 0)) { 17317c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT2; 17327c478bd9Sstevel@tonic-gate val = RT_FL2_NOFLTCFG; 17337c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOFLTCONFIG; 17347c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOLAZY_SIZE) && (strncmp(s1, 17357c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOLAZY), MSG_LD_NOLAZY_SIZE) == 0)) { 17367c478bd9Sstevel@tonic-gate select |= SEL_ACT_LMLT; 17377c478bd9Sstevel@tonic-gate val = LML_TFLG_NOLAZYLD; 17387c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOLAZY; 17397c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOOBJALTER_SIZE) && (strncmp(s1, 17407c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOOBJALTER), 17417c478bd9Sstevel@tonic-gate MSG_LD_NOOBJALTER_SIZE) == 0)) { 17427c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 17437c478bd9Sstevel@tonic-gate val = RT_FL_NOOBJALT; 17447c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOOBJALTER; 17457c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOVERSION_SIZE) && (strncmp(s1, 17467c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOVERSION), MSG_LD_NOVERSION_SIZE) == 0)) { 17477c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 17487c478bd9Sstevel@tonic-gate val = RT_FL_NOVERSION; 17497c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOVERSION; 1750df4628cbSrie } else if ((len == MSG_LD_NOUNRESWEAK_SIZE) && (strncmp(s1, 1751df4628cbSrie MSG_ORIG(MSG_LD_NOUNRESWEAK), 1752df4628cbSrie MSG_LD_NOUNRESWEAK_SIZE) == 0)) { 1753df4628cbSrie /* 1754df4628cbSrie * LD_NOUNRESWEAK (internal, used by ldd(1)). 1755df4628cbSrie */ 1756df4628cbSrie select |= SEL_ACT_LML; 1757df4628cbSrie val = LML_FLG_TRC_NOUNRESWEAK; 1758df4628cbSrie variable = ENV_FLG_NOUNRESWEAK; 1759dae2dfb7Srie } else if ((len == MSG_LD_NOPAREXT_SIZE) && (strncmp(s1, 1760dae2dfb7Srie MSG_ORIG(MSG_LD_NOPAREXT), MSG_LD_NOPAREXT_SIZE) == 0)) { 1761dae2dfb7Srie select |= SEL_ACT_LML; 1762dae2dfb7Srie val = LML_FLG_TRC_NOPAREXT; 1763dae2dfb7Srie variable = ENV_FLG_NOPAREXT; 17647c478bd9Sstevel@tonic-gate } 17657c478bd9Sstevel@tonic-gate } 17667c478bd9Sstevel@tonic-gate /* 17677c478bd9Sstevel@tonic-gate * LD_PRELOAD and LD_PROFILE family. 17687c478bd9Sstevel@tonic-gate */ 17697c478bd9Sstevel@tonic-gate else if (*s1 == 'P') { 17707c478bd9Sstevel@tonic-gate if ((len == MSG_LD_PRELOAD_SIZE) && (strncmp(s1, 17717c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_PRELOAD), MSG_LD_PRELOAD_SIZE) == 0)) { 17727c478bd9Sstevel@tonic-gate select |= SEL_ACT_STR; 1773dde769a2SRod Evans str = (select & SEL_REPLACE) ? &rpl_preload : 1774dde769a2SRod Evans &prm_preload; 17757c478bd9Sstevel@tonic-gate variable = ENV_FLG_PRELOAD; 17767c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_PROFILE_SIZE) && (strncmp(s1, 17777c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_PROFILE), MSG_LD_PROFILE_SIZE) == 0)) { 17787c478bd9Sstevel@tonic-gate /* 17797c478bd9Sstevel@tonic-gate * Only one user library can be profiled at a time. 17807c478bd9Sstevel@tonic-gate */ 17817c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 17827c478bd9Sstevel@tonic-gate variable = ENV_FLG_PROFILE; 17837c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_PROFILE_OUTPUT_SIZE) && (strncmp(s1, 17847c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_PROFILE_OUTPUT), 17857c478bd9Sstevel@tonic-gate MSG_LD_PROFILE_OUTPUT_SIZE) == 0)) { 17867c478bd9Sstevel@tonic-gate /* 17877c478bd9Sstevel@tonic-gate * Only one user library can be profiled at a time. 17887c478bd9Sstevel@tonic-gate */ 17897c478bd9Sstevel@tonic-gate select |= SEL_ACT_STR; 17907c478bd9Sstevel@tonic-gate str = &profile_out; 17917c478bd9Sstevel@tonic-gate variable = ENV_FLG_PROFILE_OUTPUT; 17927c478bd9Sstevel@tonic-gate } 17937c478bd9Sstevel@tonic-gate } 17947c478bd9Sstevel@tonic-gate /* 17957c478bd9Sstevel@tonic-gate * LD_SIGNAL. 17967c478bd9Sstevel@tonic-gate */ 17977c478bd9Sstevel@tonic-gate else if (*s1 == 'S') { 17987c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_SECURE) 17997c478bd9Sstevel@tonic-gate return; 18007c478bd9Sstevel@tonic-gate if ((len == MSG_LD_SIGNAL_SIZE) && 18017c478bd9Sstevel@tonic-gate (strncmp(s1, MSG_ORIG(MSG_LD_SIGNAL), 18027c478bd9Sstevel@tonic-gate MSG_LD_SIGNAL_SIZE) == 0)) { 18037c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 18047c478bd9Sstevel@tonic-gate variable = ENV_FLG_SIGNAL; 18057c478bd9Sstevel@tonic-gate } 18067c478bd9Sstevel@tonic-gate } 18077c478bd9Sstevel@tonic-gate /* 18081d1fba8aSrie * The LD_TRACE family (internal, used by ldd(1)). This definition is 18091d1fba8aSrie * the key to enabling all other ldd(1) specific environment variables. 18101d1fba8aSrie * In case an auditor is called, which in turn might exec(2) a 18111d1fba8aSrie * subprocess, this variable is disabled, so that any subprocess 18121d1fba8aSrie * escapes ldd(1) processing. 18137c478bd9Sstevel@tonic-gate */ 18147c478bd9Sstevel@tonic-gate else if (*s1 == 'T') { 18157c478bd9Sstevel@tonic-gate if (((len == MSG_LD_TRACE_OBJS_SIZE) && 18167c478bd9Sstevel@tonic-gate (strncmp(s1, MSG_ORIG(MSG_LD_TRACE_OBJS), 18177c478bd9Sstevel@tonic-gate MSG_LD_TRACE_OBJS_SIZE) == 0)) || 18187c478bd9Sstevel@tonic-gate ((len == MSG_LD_TRACE_OBJS_E_SIZE) && 18197c478bd9Sstevel@tonic-gate (((strncmp(s1, MSG_ORIG(MSG_LD_TRACE_OBJS_E), 18207c478bd9Sstevel@tonic-gate MSG_LD_TRACE_OBJS_E_SIZE) == 0) && !aout) || 18217c478bd9Sstevel@tonic-gate ((strncmp(s1, MSG_ORIG(MSG_LD_TRACE_OBJS_A), 18227c478bd9Sstevel@tonic-gate MSG_LD_TRACE_OBJS_A_SIZE) == 0) && aout)))) { 18231d1fba8aSrie char *s0 = (char *)s1; 18241d1fba8aSrie 18257c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 18267c478bd9Sstevel@tonic-gate variable = ENV_FLG_TRACE_OBJS; 18271d1fba8aSrie 182802ca3e02Srie #if defined(__sparc) || defined(__x86) 18291d1fba8aSrie /* 18301d1fba8aSrie * The simplest way to "disable" this variable is to 18311d1fba8aSrie * truncate this string to "LD_'\0'". This string is 18321d1fba8aSrie * ignored by any ld.so.1 environment processing. 18331d1fba8aSrie * Use of such interfaces as unsetenv(3c) are overkill, 18341d1fba8aSrie * and would drag too much libc implementation detail 18351d1fba8aSrie * into ld.so.1. 18361d1fba8aSrie */ 1837a953e2b1Srie *s0 = '\0'; 18381d1fba8aSrie #else 18391d1fba8aSrie /* 18401d1fba8aSrie * Verify that the above write is appropriate for any new platforms. 18411d1fba8aSrie */ 18421d1fba8aSrie #error unsupported architecture! 18431d1fba8aSrie #endif 18447c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_TRACE_PTHS_SIZE) && (strncmp(s1, 18457c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_TRACE_PTHS), 18467c478bd9Sstevel@tonic-gate MSG_LD_TRACE_PTHS_SIZE) == 0)) { 18477c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 18487c478bd9Sstevel@tonic-gate val = LML_FLG_TRC_SEARCH; 18497c478bd9Sstevel@tonic-gate variable = ENV_FLG_TRACE_PTHS; 18507c478bd9Sstevel@tonic-gate } 18517c478bd9Sstevel@tonic-gate } 18527c478bd9Sstevel@tonic-gate /* 18537c478bd9Sstevel@tonic-gate * LD_UNREF and LD_UNUSED (internal, used by ldd(1)). 18547c478bd9Sstevel@tonic-gate */ 18557c478bd9Sstevel@tonic-gate else if (*s1 == 'U') { 18567c478bd9Sstevel@tonic-gate if ((len == MSG_LD_UNREF_SIZE) && (strncmp(s1, 18577c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_UNREF), MSG_LD_UNREF_SIZE) == 0)) { 18587c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 18597c478bd9Sstevel@tonic-gate val = LML_FLG_TRC_UNREF; 18607c478bd9Sstevel@tonic-gate variable = ENV_FLG_UNREF; 18617c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_UNUSED_SIZE) && (strncmp(s1, 18627c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_UNUSED), MSG_LD_UNUSED_SIZE) == 0)) { 18637c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 18647c478bd9Sstevel@tonic-gate val = LML_FLG_TRC_UNUSED; 18657c478bd9Sstevel@tonic-gate variable = ENV_FLG_UNUSED; 18667c478bd9Sstevel@tonic-gate } 18677c478bd9Sstevel@tonic-gate } 18687c478bd9Sstevel@tonic-gate /* 18697c478bd9Sstevel@tonic-gate * LD_VERBOSE (internal, used by ldd(1)). 18707c478bd9Sstevel@tonic-gate */ 18717c478bd9Sstevel@tonic-gate else if (*s1 == 'V') { 18727c478bd9Sstevel@tonic-gate if ((len == MSG_LD_VERBOSE_SIZE) && (strncmp(s1, 18737c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_VERBOSE), MSG_LD_VERBOSE_SIZE) == 0)) { 18747c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 18757c478bd9Sstevel@tonic-gate val = LML_FLG_TRC_VERBOSE; 18767c478bd9Sstevel@tonic-gate variable = ENV_FLG_VERBOSE; 18777c478bd9Sstevel@tonic-gate } 18787c478bd9Sstevel@tonic-gate } 18797c478bd9Sstevel@tonic-gate /* 18807c478bd9Sstevel@tonic-gate * LD_WARN (internal, used by ldd(1)). 18817c478bd9Sstevel@tonic-gate */ 18827c478bd9Sstevel@tonic-gate else if (*s1 == 'W') { 18837c478bd9Sstevel@tonic-gate if ((len == MSG_LD_WARN_SIZE) && (strncmp(s1, 18847c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_WARN), MSG_LD_WARN_SIZE) == 0)) { 18857c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 18867c478bd9Sstevel@tonic-gate val = LML_FLG_TRC_WARN; 18877c478bd9Sstevel@tonic-gate variable = ENV_FLG_WARN; 18887c478bd9Sstevel@tonic-gate } 18897c478bd9Sstevel@tonic-gate } 189056deab07SRod Evans 18917c478bd9Sstevel@tonic-gate if (variable == 0) 18927c478bd9Sstevel@tonic-gate return; 18937c478bd9Sstevel@tonic-gate 18947c478bd9Sstevel@tonic-gate /* 18957c478bd9Sstevel@tonic-gate * If the variable is already processed with ISA specific variable, 18967c478bd9Sstevel@tonic-gate * no further processing needed. 18977c478bd9Sstevel@tonic-gate */ 18987c478bd9Sstevel@tonic-gate if (((select & SEL_REPLACE) && (rplisa & variable)) || 18997c478bd9Sstevel@tonic-gate ((select & SEL_PERMANT) && (prmisa & variable))) 19007c478bd9Sstevel@tonic-gate return; 19017c478bd9Sstevel@tonic-gate 19027c478bd9Sstevel@tonic-gate /* 1903fa034d7fSseizo * Now mark the appropriate variables. 1904fa034d7fSseizo * If the replaceable variable is already set, then the 1905fa034d7fSseizo * process environment variable must be set. Any replaceable 1906fa034d7fSseizo * variable specified in a configuration file can be ignored. 19077c478bd9Sstevel@tonic-gate */ 19087c478bd9Sstevel@tonic-gate if (env_flags & ENV_TYP_ISA) { 19097c478bd9Sstevel@tonic-gate /* 1910dde769a2SRod Evans * This is an ISA setting. We do the setting even if s2 is 1911dde769a2SRod Evans * NULL. If s2 is NULL, we might need to undo the setting. 19127c478bd9Sstevel@tonic-gate */ 19137c478bd9Sstevel@tonic-gate if (select & SEL_REPLACE) { 1914fa034d7fSseizo if (rplisa & variable) 1915fa034d7fSseizo return; 19167c478bd9Sstevel@tonic-gate rplisa |= variable; 19177c478bd9Sstevel@tonic-gate } else { 19187c478bd9Sstevel@tonic-gate prmisa |= variable; 19197c478bd9Sstevel@tonic-gate } 19207c478bd9Sstevel@tonic-gate } else if (s2) { 19217c478bd9Sstevel@tonic-gate /* 1922dde769a2SRod Evans * This is a non-ISA setting. 19237c478bd9Sstevel@tonic-gate */ 19247c478bd9Sstevel@tonic-gate if (select & SEL_REPLACE) { 1925fa034d7fSseizo if (rplgen & variable) 1926fa034d7fSseizo return; 19277c478bd9Sstevel@tonic-gate rplgen |= variable; 19287c478bd9Sstevel@tonic-gate } else 19297c478bd9Sstevel@tonic-gate prmgen |= variable; 19307c478bd9Sstevel@tonic-gate } else 19317c478bd9Sstevel@tonic-gate /* 1932dde769a2SRod Evans * This is a non-ISA setting which can be ignored. 19337c478bd9Sstevel@tonic-gate */ 19347c478bd9Sstevel@tonic-gate return; 19357c478bd9Sstevel@tonic-gate 19367c478bd9Sstevel@tonic-gate /* 19377c478bd9Sstevel@tonic-gate * Now perform the setting. 19387c478bd9Sstevel@tonic-gate */ 19397c478bd9Sstevel@tonic-gate if (select & SEL_ACT_RT) { 19407c478bd9Sstevel@tonic-gate if (s2) 19417c478bd9Sstevel@tonic-gate rtld_flags |= val; 19427c478bd9Sstevel@tonic-gate else 19437c478bd9Sstevel@tonic-gate rtld_flags &= ~val; 19447c478bd9Sstevel@tonic-gate } else if (select & SEL_ACT_RT2) { 19457c478bd9Sstevel@tonic-gate if (s2) 19467c478bd9Sstevel@tonic-gate rtld_flags2 |= val; 19477c478bd9Sstevel@tonic-gate else 19487c478bd9Sstevel@tonic-gate rtld_flags2 &= ~val; 19497c478bd9Sstevel@tonic-gate } else if (select & SEL_ACT_STR) 19507c478bd9Sstevel@tonic-gate *str = s2; 19517c478bd9Sstevel@tonic-gate else if (select & SEL_ACT_LML) { 19527c478bd9Sstevel@tonic-gate if (s2) 19537c478bd9Sstevel@tonic-gate *lmflags |= val; 19547c478bd9Sstevel@tonic-gate else 19557c478bd9Sstevel@tonic-gate *lmflags &= ~val; 19567c478bd9Sstevel@tonic-gate } else if (select & SEL_ACT_LMLT) { 19577c478bd9Sstevel@tonic-gate if (s2) 19587c478bd9Sstevel@tonic-gate *lmtflags |= val; 19597c478bd9Sstevel@tonic-gate else 19607c478bd9Sstevel@tonic-gate *lmtflags &= ~val; 19617c478bd9Sstevel@tonic-gate } else if (select & SEL_ACT_SPEC_1) { 19627c478bd9Sstevel@tonic-gate /* 19637c478bd9Sstevel@tonic-gate * variable is either ENV_FLG_FLAGS or ENV_FLG_LIBPATH 19647c478bd9Sstevel@tonic-gate */ 19657c478bd9Sstevel@tonic-gate *str = s2; 19667c478bd9Sstevel@tonic-gate if ((select & SEL_REPLACE) && (env_flags & ENV_TYP_CONFIG)) { 19677c478bd9Sstevel@tonic-gate if (s2) { 19687c478bd9Sstevel@tonic-gate if (variable == ENV_FLG_FLAGS) 19697c478bd9Sstevel@tonic-gate env_info |= ENV_INF_FLAGCFG; 19707c478bd9Sstevel@tonic-gate else 19717c478bd9Sstevel@tonic-gate env_info |= ENV_INF_PATHCFG; 19727c478bd9Sstevel@tonic-gate } else { 19737c478bd9Sstevel@tonic-gate if (variable == ENV_FLG_FLAGS) 19747c478bd9Sstevel@tonic-gate env_info &= ~ENV_INF_FLAGCFG; 19757c478bd9Sstevel@tonic-gate else 19767c478bd9Sstevel@tonic-gate env_info &= ~ENV_INF_PATHCFG; 19777c478bd9Sstevel@tonic-gate } 19787c478bd9Sstevel@tonic-gate } 19797c478bd9Sstevel@tonic-gate } else if (select & SEL_ACT_SPEC_2) { 19807c478bd9Sstevel@tonic-gate /* 19817c478bd9Sstevel@tonic-gate * variables can be: ENV_FLG_ 19827c478bd9Sstevel@tonic-gate * AUDIT_ARGS, BINDING, CONCURRENCY, CONFGEN, 19837c478bd9Sstevel@tonic-gate * LOADFLTR, PROFILE, SIGNAL, TRACE_OBJS 19847c478bd9Sstevel@tonic-gate */ 19857c478bd9Sstevel@tonic-gate if (variable == ENV_FLG_AUDIT_ARGS) { 19867c478bd9Sstevel@tonic-gate if (s2) { 19877c478bd9Sstevel@tonic-gate audit_argcnt = atoi(s2); 19887c478bd9Sstevel@tonic-gate audit_argcnt += audit_argcnt % 2; 19897c478bd9Sstevel@tonic-gate } else 19907c478bd9Sstevel@tonic-gate audit_argcnt = 0; 19917c478bd9Sstevel@tonic-gate } else if (variable == ENV_FLG_BINDINGS) { 19927c478bd9Sstevel@tonic-gate if (s2) 19937c478bd9Sstevel@tonic-gate rpl_debug = MSG_ORIG(MSG_TKN_BINDINGS); 19947c478bd9Sstevel@tonic-gate else 199543d7826aSRod Evans rpl_debug = NULL; 19967c478bd9Sstevel@tonic-gate } else if (variable == ENV_FLG_CONFGEN) { 19977c478bd9Sstevel@tonic-gate if (s2) { 19987c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_CONFGEN; 19997c478bd9Sstevel@tonic-gate *lmflags |= LML_FLG_IGNRELERR; 20007c478bd9Sstevel@tonic-gate } else { 20017c478bd9Sstevel@tonic-gate rtld_flags &= ~RT_FL_CONFGEN; 20027c478bd9Sstevel@tonic-gate *lmflags &= ~LML_FLG_IGNRELERR; 20037c478bd9Sstevel@tonic-gate } 20047c478bd9Sstevel@tonic-gate } else if (variable == ENV_FLG_LOADFLTR) { 20057c478bd9Sstevel@tonic-gate if (s2) { 20067c478bd9Sstevel@tonic-gate *lmtflags |= LML_TFLG_LOADFLTR; 20077c478bd9Sstevel@tonic-gate if (*s2 == '2') 20087c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_WARNFLTR; 20097c478bd9Sstevel@tonic-gate } else { 20107c478bd9Sstevel@tonic-gate *lmtflags &= ~LML_TFLG_LOADFLTR; 20117c478bd9Sstevel@tonic-gate rtld_flags &= ~RT_FL_WARNFLTR; 20127c478bd9Sstevel@tonic-gate } 20137c478bd9Sstevel@tonic-gate } else if (variable == ENV_FLG_PROFILE) { 20147c478bd9Sstevel@tonic-gate profile_name = s2; 20157c478bd9Sstevel@tonic-gate if (s2) { 20167c478bd9Sstevel@tonic-gate if (strcmp(s2, MSG_ORIG(MSG_FIL_RTLD)) == 0) { 20177c478bd9Sstevel@tonic-gate return; 20187c478bd9Sstevel@tonic-gate } 2019a953e2b1Srie /* BEGIN CSTYLED */ 20207c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_SECURE) { 20217c478bd9Sstevel@tonic-gate profile_lib = 20227c478bd9Sstevel@tonic-gate #if defined(_ELF64) 20237c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_LDPROFSE_64); 20247c478bd9Sstevel@tonic-gate #else 20257c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_LDPROFSE); 20267c478bd9Sstevel@tonic-gate #endif 20277c478bd9Sstevel@tonic-gate } else { 20287c478bd9Sstevel@tonic-gate profile_lib = 20297c478bd9Sstevel@tonic-gate #if defined(_ELF64) 20307c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_LDPROF_64); 20317c478bd9Sstevel@tonic-gate #else 20327c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_LDPROF); 20337c478bd9Sstevel@tonic-gate #endif 20347c478bd9Sstevel@tonic-gate } 2035a953e2b1Srie /* END CSTYLED */ 20367c478bd9Sstevel@tonic-gate } else 203756deab07SRod Evans profile_lib = NULL; 20387c478bd9Sstevel@tonic-gate } else if (variable == ENV_FLG_SIGNAL) { 20397c478bd9Sstevel@tonic-gate killsig = s2 ? atoi(s2) : SIGKILL; 20407c478bd9Sstevel@tonic-gate } else if (variable == ENV_FLG_TRACE_OBJS) { 20417c478bd9Sstevel@tonic-gate if (s2) { 20427c478bd9Sstevel@tonic-gate *lmflags |= LML_FLG_TRC_ENABLE; 20437c478bd9Sstevel@tonic-gate if (*s2 == '2') 20447c478bd9Sstevel@tonic-gate *lmflags |= LML_FLG_TRC_LDDSTUB; 20457c478bd9Sstevel@tonic-gate } else 20467c478bd9Sstevel@tonic-gate *lmflags &= 2047dde769a2SRod Evans ~(LML_FLG_TRC_ENABLE | LML_FLG_TRC_LDDSTUB); 20487c478bd9Sstevel@tonic-gate } 20497c478bd9Sstevel@tonic-gate } 20507c478bd9Sstevel@tonic-gate } 20517c478bd9Sstevel@tonic-gate 20527c478bd9Sstevel@tonic-gate /* 20537c478bd9Sstevel@tonic-gate * Determine whether we have an architecture specific environment variable. 20547c478bd9Sstevel@tonic-gate * If we do, and we're the wrong architecture, it'll just get ignored. 20557c478bd9Sstevel@tonic-gate * Otherwise the variable is processed in it's architecture neutral form. 20567c478bd9Sstevel@tonic-gate */ 20577c478bd9Sstevel@tonic-gate static int 20587c478bd9Sstevel@tonic-gate ld_arch_env(const char *s1, size_t *len) 20597c478bd9Sstevel@tonic-gate { 20607c478bd9Sstevel@tonic-gate size_t _len = *len - 3; 20617c478bd9Sstevel@tonic-gate 20627c478bd9Sstevel@tonic-gate if (s1[_len++] == '_') { 20637c478bd9Sstevel@tonic-gate if ((s1[_len] == '3') && (s1[_len + 1] == '2')) { 20647c478bd9Sstevel@tonic-gate #if defined(_ELF64) 20657c478bd9Sstevel@tonic-gate return (ENV_TYP_IGNORE); 20667c478bd9Sstevel@tonic-gate #else 20677c478bd9Sstevel@tonic-gate *len = *len - 3; 20687c478bd9Sstevel@tonic-gate return (ENV_TYP_ISA); 20697c478bd9Sstevel@tonic-gate #endif 20707c478bd9Sstevel@tonic-gate } 20717c478bd9Sstevel@tonic-gate if ((s1[_len] == '6') && (s1[_len + 1] == '4')) { 20727c478bd9Sstevel@tonic-gate #if defined(_ELF64) 20737c478bd9Sstevel@tonic-gate *len = *len - 3; 20747c478bd9Sstevel@tonic-gate return (ENV_TYP_ISA); 20757c478bd9Sstevel@tonic-gate #else 20767c478bd9Sstevel@tonic-gate return (ENV_TYP_IGNORE); 20777c478bd9Sstevel@tonic-gate #endif 20787c478bd9Sstevel@tonic-gate } 20797c478bd9Sstevel@tonic-gate } 20807c478bd9Sstevel@tonic-gate return (0); 20817c478bd9Sstevel@tonic-gate } 20827c478bd9Sstevel@tonic-gate 20837c478bd9Sstevel@tonic-gate 20847c478bd9Sstevel@tonic-gate /* 20857c478bd9Sstevel@tonic-gate * Process an LD_FLAGS environment variable. The value can be a comma 20867c478bd9Sstevel@tonic-gate * separated set of tokens, which are sent (in upper case) into the generic 20877c478bd9Sstevel@tonic-gate * LD_XXXX environment variable engine. For example: 20887c478bd9Sstevel@tonic-gate * 20897c478bd9Sstevel@tonic-gate * LD_FLAGS=bind_now -> LD_BIND_NOW=1 20907c478bd9Sstevel@tonic-gate * LD_FLAGS=library_path=/foo:. -> LD_LIBRARY_PATH=/foo:. 20917c478bd9Sstevel@tonic-gate * LD_FLAGS=debug=files:detail -> LD_DEBUG=files:detail 20927c478bd9Sstevel@tonic-gate * or 20937c478bd9Sstevel@tonic-gate * LD_FLAGS=bind_now,library_path=/foo:.,debug=files:detail 20947c478bd9Sstevel@tonic-gate */ 20957c478bd9Sstevel@tonic-gate static int 20967c478bd9Sstevel@tonic-gate ld_flags_env(const char *str, Word *lmflags, Word *lmtflags, 20977c478bd9Sstevel@tonic-gate uint_t env_flags, int aout) 20987c478bd9Sstevel@tonic-gate { 20993dbfc803SRod Evans char *nstr, *sstr, *estr = NULL; 21007c478bd9Sstevel@tonic-gate size_t nlen, len; 21017c478bd9Sstevel@tonic-gate 21023dbfc803SRod Evans if (str == NULL) 21037c478bd9Sstevel@tonic-gate return (0); 21047c478bd9Sstevel@tonic-gate 21057c478bd9Sstevel@tonic-gate /* 21067c478bd9Sstevel@tonic-gate * Create a new string as we're going to transform the token(s) into 21077c478bd9Sstevel@tonic-gate * uppercase and separate tokens with nulls. 21087c478bd9Sstevel@tonic-gate */ 21097c478bd9Sstevel@tonic-gate len = strlen(str); 21103dbfc803SRod Evans if ((nstr = malloc(len + 1)) == NULL) 21117c478bd9Sstevel@tonic-gate return (1); 21127c478bd9Sstevel@tonic-gate (void) strcpy(nstr, str); 21137c478bd9Sstevel@tonic-gate 21147c478bd9Sstevel@tonic-gate for (sstr = nstr; sstr; sstr++, len--) { 21157c478bd9Sstevel@tonic-gate int flags; 21167c478bd9Sstevel@tonic-gate 21177c478bd9Sstevel@tonic-gate if ((*sstr != '\0') && (*sstr != ',')) { 21183dbfc803SRod Evans if (estr == NULL) { 21197c478bd9Sstevel@tonic-gate if (*sstr == '=') 21207c478bd9Sstevel@tonic-gate estr = sstr; 21217c478bd9Sstevel@tonic-gate else { 21227c478bd9Sstevel@tonic-gate /* 21237c478bd9Sstevel@tonic-gate * Translate token to uppercase. Don't 21247c478bd9Sstevel@tonic-gate * use toupper(3C) as including this 21257c478bd9Sstevel@tonic-gate * code doubles the size of ld.so.1. 21267c478bd9Sstevel@tonic-gate */ 21277c478bd9Sstevel@tonic-gate if ((*sstr >= 'a') && (*sstr <= 'z')) 21287c478bd9Sstevel@tonic-gate *sstr = *sstr - ('a' - 'A'); 21297c478bd9Sstevel@tonic-gate } 21307c478bd9Sstevel@tonic-gate } 21317c478bd9Sstevel@tonic-gate continue; 21327c478bd9Sstevel@tonic-gate } 21337c478bd9Sstevel@tonic-gate 21347c478bd9Sstevel@tonic-gate *sstr = '\0'; 21357c478bd9Sstevel@tonic-gate if (estr) { 21367c478bd9Sstevel@tonic-gate nlen = estr - nstr; 21377c478bd9Sstevel@tonic-gate if ((*++estr == '\0') || (*estr == ',')) 213843d7826aSRod Evans estr = NULL; 21397c478bd9Sstevel@tonic-gate } else 21407c478bd9Sstevel@tonic-gate nlen = sstr - nstr; 21417c478bd9Sstevel@tonic-gate 21427c478bd9Sstevel@tonic-gate /* 21437c478bd9Sstevel@tonic-gate * Fabricate a boolean definition for any unqualified variable. 21447c478bd9Sstevel@tonic-gate * Thus LD_FLAGS=bind_now is represented as BIND_NOW=(null). 21457c478bd9Sstevel@tonic-gate * The value is sufficient to assert any boolean variables, plus 21467c478bd9Sstevel@tonic-gate * the term "(null)" is specifically chosen in case someone 21477c478bd9Sstevel@tonic-gate * mistakenly supplies something like LD_FLAGS=library_path. 21487c478bd9Sstevel@tonic-gate */ 21493dbfc803SRod Evans if (estr == NULL) 21507c478bd9Sstevel@tonic-gate estr = (char *)MSG_INTL(MSG_STR_NULL); 21517c478bd9Sstevel@tonic-gate 21527c478bd9Sstevel@tonic-gate /* 21537c478bd9Sstevel@tonic-gate * Determine whether the environment variable is 32- or 64-bit 21547c478bd9Sstevel@tonic-gate * specific. The length, len, will reflect the architecture 21557c478bd9Sstevel@tonic-gate * neutral portion of the string. 21567c478bd9Sstevel@tonic-gate */ 21577c478bd9Sstevel@tonic-gate if ((flags = ld_arch_env(nstr, &nlen)) != ENV_TYP_IGNORE) { 21587c478bd9Sstevel@tonic-gate ld_generic_env(nstr, nlen, estr, lmflags, 21597c478bd9Sstevel@tonic-gate lmtflags, (env_flags | flags), aout); 21607c478bd9Sstevel@tonic-gate } 21617c478bd9Sstevel@tonic-gate if (len == 0) 21627c478bd9Sstevel@tonic-gate return (0); 21637c478bd9Sstevel@tonic-gate 21647c478bd9Sstevel@tonic-gate nstr = sstr + 1; 216543d7826aSRod Evans estr = NULL; 21667c478bd9Sstevel@tonic-gate } 21677c478bd9Sstevel@tonic-gate return (0); 21687c478bd9Sstevel@tonic-gate } 21697c478bd9Sstevel@tonic-gate 21707c478bd9Sstevel@tonic-gate 21717c478bd9Sstevel@tonic-gate /* 21727c478bd9Sstevel@tonic-gate * Process a single environment string. Only strings starting with `LD_' are 21737c478bd9Sstevel@tonic-gate * reserved for our use. By convention, all strings should be of the form 21747c478bd9Sstevel@tonic-gate * `LD_XXXX=', if the string is followed by a non-null value the appropriate 21757c478bd9Sstevel@tonic-gate * functionality is enabled. Also pick off applicable locale variables. 21767c478bd9Sstevel@tonic-gate */ 21777c478bd9Sstevel@tonic-gate #define LOC_LANG 1 21787c478bd9Sstevel@tonic-gate #define LOC_MESG 2 21797c478bd9Sstevel@tonic-gate #define LOC_ALL 3 21807c478bd9Sstevel@tonic-gate 21817c478bd9Sstevel@tonic-gate static void 21827c478bd9Sstevel@tonic-gate ld_str_env(const char *s1, Word *lmflags, Word *lmtflags, uint_t env_flags, 21837c478bd9Sstevel@tonic-gate int aout) 21847c478bd9Sstevel@tonic-gate { 21857c478bd9Sstevel@tonic-gate const char *s2; 218610a4fa49Srie static size_t loc = 0; 21877c478bd9Sstevel@tonic-gate 21887c478bd9Sstevel@tonic-gate if (*s1++ != 'L') 21897c478bd9Sstevel@tonic-gate return; 21907c478bd9Sstevel@tonic-gate 21917c478bd9Sstevel@tonic-gate /* 21927c478bd9Sstevel@tonic-gate * See if we have any locale environment settings. These environment 21937c478bd9Sstevel@tonic-gate * variables have a precedence, LC_ALL is higher than LC_MESSAGES which 21947c478bd9Sstevel@tonic-gate * is higher than LANG. 21957c478bd9Sstevel@tonic-gate */ 21967c478bd9Sstevel@tonic-gate s2 = s1; 21977c478bd9Sstevel@tonic-gate if ((*s2++ == 'C') && (*s2++ == '_') && (*s2 != '\0')) { 21987c478bd9Sstevel@tonic-gate if (strncmp(s2, MSG_ORIG(MSG_LC_ALL), MSG_LC_ALL_SIZE) == 0) { 21997c478bd9Sstevel@tonic-gate s2 += MSG_LC_ALL_SIZE; 22007c478bd9Sstevel@tonic-gate if ((*s2 != '\0') && (loc < LOC_ALL)) { 220110a4fa49Srie glcs[CI_LCMESSAGES].lc_un.lc_ptr = (char *)s2; 22027c478bd9Sstevel@tonic-gate loc = LOC_ALL; 22037c478bd9Sstevel@tonic-gate } 22047c478bd9Sstevel@tonic-gate } else if (strncmp(s2, MSG_ORIG(MSG_LC_MESSAGES), 22057c478bd9Sstevel@tonic-gate MSG_LC_MESSAGES_SIZE) == 0) { 22067c478bd9Sstevel@tonic-gate s2 += MSG_LC_MESSAGES_SIZE; 22077c478bd9Sstevel@tonic-gate if ((*s2 != '\0') && (loc < LOC_MESG)) { 220810a4fa49Srie glcs[CI_LCMESSAGES].lc_un.lc_ptr = (char *)s2; 22097c478bd9Sstevel@tonic-gate loc = LOC_MESG; 22107c478bd9Sstevel@tonic-gate } 22117c478bd9Sstevel@tonic-gate } 22127c478bd9Sstevel@tonic-gate return; 22137c478bd9Sstevel@tonic-gate } 22147c478bd9Sstevel@tonic-gate 22157c478bd9Sstevel@tonic-gate s2 = s1; 22167c478bd9Sstevel@tonic-gate if ((*s2++ == 'A') && (*s2++ == 'N') && (*s2++ == 'G') && 22177c478bd9Sstevel@tonic-gate (*s2++ == '=') && (*s2 != '\0') && (loc < LOC_LANG)) { 221810a4fa49Srie glcs[CI_LCMESSAGES].lc_un.lc_ptr = (char *)s2; 22197c478bd9Sstevel@tonic-gate loc = LOC_LANG; 22207c478bd9Sstevel@tonic-gate return; 22217c478bd9Sstevel@tonic-gate } 22227c478bd9Sstevel@tonic-gate 22237c478bd9Sstevel@tonic-gate /* 22247c478bd9Sstevel@tonic-gate * Pick off any LD_XXXX environment variables. 22257c478bd9Sstevel@tonic-gate */ 22267c478bd9Sstevel@tonic-gate if ((*s1++ == 'D') && (*s1++ == '_') && (*s1 != '\0')) { 22277c478bd9Sstevel@tonic-gate size_t len; 22287c478bd9Sstevel@tonic-gate int flags; 22297c478bd9Sstevel@tonic-gate 22309acbbeafSnn /* 22319acbbeafSnn * In a branded process we must ignore all LD_XXXX env vars 22329acbbeafSnn * because they are intended for the brand's linker. 22339acbbeafSnn * To affect the Solaris linker, use LD_BRAND_XXXX instead. 22349acbbeafSnn */ 22359acbbeafSnn if (rtld_flags2 & RT_FL2_BRANDED) { 22369acbbeafSnn if (strncmp(s1, MSG_ORIG(MSG_LD_BRAND_PREFIX), 22379acbbeafSnn MSG_LD_BRAND_PREFIX_SIZE) != 0) 22389acbbeafSnn return; 22399acbbeafSnn s1 += MSG_LD_BRAND_PREFIX_SIZE; 22409acbbeafSnn } 22419acbbeafSnn 22427c478bd9Sstevel@tonic-gate /* 22437c478bd9Sstevel@tonic-gate * Environment variables with no value (ie. LD_XXXX=) typically 22447c478bd9Sstevel@tonic-gate * have no impact, however if environment variables are defined 22457c478bd9Sstevel@tonic-gate * within a configuration file, these null user settings can be 22467c478bd9Sstevel@tonic-gate * used to disable any configuration replaceable definitions. 22477c478bd9Sstevel@tonic-gate */ 22483dbfc803SRod Evans if ((s2 = strchr(s1, '=')) == NULL) { 22497c478bd9Sstevel@tonic-gate len = strlen(s1); 225043d7826aSRod Evans s2 = NULL; 22517c478bd9Sstevel@tonic-gate } else if (*++s2 == '\0') { 22527c478bd9Sstevel@tonic-gate len = strlen(s1) - 1; 225343d7826aSRod Evans s2 = NULL; 22547c478bd9Sstevel@tonic-gate } else { 22557c478bd9Sstevel@tonic-gate len = s2 - s1 - 1; 2256e23c41c9SAli Bahrami while (conv_strproc_isspace(*s2)) 22577c478bd9Sstevel@tonic-gate s2++; 22587c478bd9Sstevel@tonic-gate } 22597c478bd9Sstevel@tonic-gate 22607c478bd9Sstevel@tonic-gate /* 22617c478bd9Sstevel@tonic-gate * Determine whether the environment variable is 32- or 64-bit 22627c478bd9Sstevel@tonic-gate * specific. The length, len, will reflect the architecture 22637c478bd9Sstevel@tonic-gate * neutral portion of the string. 22647c478bd9Sstevel@tonic-gate */ 22657c478bd9Sstevel@tonic-gate if ((flags = ld_arch_env(s1, &len)) == ENV_TYP_IGNORE) 22667c478bd9Sstevel@tonic-gate return; 22677c478bd9Sstevel@tonic-gate env_flags |= flags; 22687c478bd9Sstevel@tonic-gate 22697c478bd9Sstevel@tonic-gate ld_generic_env(s1, len, s2, lmflags, lmtflags, env_flags, aout); 22707c478bd9Sstevel@tonic-gate } 22717c478bd9Sstevel@tonic-gate } 22727c478bd9Sstevel@tonic-gate 22737c478bd9Sstevel@tonic-gate /* 22747c478bd9Sstevel@tonic-gate * Internal getenv routine. Called immediately after ld.so.1 initializes 22757c478bd9Sstevel@tonic-gate * itself. 22767c478bd9Sstevel@tonic-gate */ 22777c478bd9Sstevel@tonic-gate int 227856deab07SRod Evans readenv_user(const char **envp, Word *lmflags, Word *lmtflags, int aout) 22797c478bd9Sstevel@tonic-gate { 228010a4fa49Srie char *locale; 228110a4fa49Srie 228256deab07SRod Evans if (envp == NULL) 22837c478bd9Sstevel@tonic-gate return (0); 22847c478bd9Sstevel@tonic-gate 228556deab07SRod Evans while (*envp != NULL) 22867c478bd9Sstevel@tonic-gate ld_str_env(*envp++, lmflags, lmtflags, 0, aout); 22877c478bd9Sstevel@tonic-gate 22887c478bd9Sstevel@tonic-gate /* 22897c478bd9Sstevel@tonic-gate * Having collected the best representation of any LD_FLAGS, process 22907c478bd9Sstevel@tonic-gate * these strings. 22917c478bd9Sstevel@tonic-gate */ 22927c478bd9Sstevel@tonic-gate if (ld_flags_env(rpl_ldflags, lmflags, lmtflags, 0, aout) == 1) 22937c478bd9Sstevel@tonic-gate return (1); 22947c478bd9Sstevel@tonic-gate 22957c478bd9Sstevel@tonic-gate /* 22967c478bd9Sstevel@tonic-gate * Don't allow environment controlled auditing when tracing or if 22977c478bd9Sstevel@tonic-gate * explicitly disabled. Trigger all tracing modes from 22987c478bd9Sstevel@tonic-gate * LML_FLG_TRC_ENABLE. 22997c478bd9Sstevel@tonic-gate */ 23007c478bd9Sstevel@tonic-gate if ((*lmflags & LML_FLG_TRC_ENABLE) || (rtld_flags & RT_FL_NOAUDIT)) 230156deab07SRod Evans rpl_audit = profile_lib = profile_name = NULL; 23027c478bd9Sstevel@tonic-gate if ((*lmflags & LML_FLG_TRC_ENABLE) == 0) 23037c478bd9Sstevel@tonic-gate *lmflags &= ~LML_MSK_TRC; 23047c478bd9Sstevel@tonic-gate 2305dffec89cSrie /* 2306dffec89cSrie * If both LD_BIND_NOW and LD_BIND_LAZY are specified, the former wins. 2307dffec89cSrie */ 2308dffec89cSrie if ((rtld_flags2 & (RT_FL2_BINDNOW | RT_FL2_BINDLAZY)) == 2309dffec89cSrie (RT_FL2_BINDNOW | RT_FL2_BINDLAZY)) 2310dffec89cSrie rtld_flags2 &= ~RT_FL2_BINDLAZY; 2311dffec89cSrie 2312dae2dfb7Srie /* 2313dae2dfb7Srie * When using ldd(1) -r or -d against an executable, assert -p. 2314dae2dfb7Srie */ 2315dae2dfb7Srie if ((*lmflags & 2316dae2dfb7Srie (LML_FLG_TRC_WARN | LML_FLG_TRC_LDDSTUB)) == LML_FLG_TRC_WARN) 2317dae2dfb7Srie *lmflags |= LML_FLG_TRC_NOPAREXT; 2318dae2dfb7Srie 23197c478bd9Sstevel@tonic-gate /* 23207c478bd9Sstevel@tonic-gate * If we have a locale setting make sure its worth processing further. 23211d6b7ad8Srie * C and POSIX locales don't need any processing. In addition, to 23221d6b7ad8Srie * ensure no one escapes the /usr/lib/locale hierarchy, don't allow 23231d6b7ad8Srie * the locale to contain a segment that leads upward in the file system 23241d6b7ad8Srie * hierarchy (i.e. no '..' segments). Given that we'll be confined to 23251d6b7ad8Srie * the /usr/lib/locale hierarchy, there is no need to extensively 23261d6b7ad8Srie * validate the mode or ownership of any message file (as libc's 23271d6b7ad8Srie * generic handling of message files does). Duplicate the string so 23281d6b7ad8Srie * that new locale setting can generically cleanup any previous locales. 23297c478bd9Sstevel@tonic-gate */ 233043d7826aSRod Evans if ((locale = glcs[CI_LCMESSAGES].lc_un.lc_ptr) != NULL) { 23317c478bd9Sstevel@tonic-gate if (((*locale == 'C') && (*(locale + 1) == '\0')) || 23321d6b7ad8Srie (strcmp(locale, MSG_ORIG(MSG_TKN_POSIX)) == 0) || 23331d6b7ad8Srie (strstr(locale, MSG_ORIG(MSG_TKN_DOTDOT)) != NULL)) 233443d7826aSRod Evans glcs[CI_LCMESSAGES].lc_un.lc_ptr = NULL; 23357c478bd9Sstevel@tonic-gate else 233610a4fa49Srie glcs[CI_LCMESSAGES].lc_un.lc_ptr = strdup(locale); 23377c478bd9Sstevel@tonic-gate } 23387c478bd9Sstevel@tonic-gate return (0); 23397c478bd9Sstevel@tonic-gate } 23407c478bd9Sstevel@tonic-gate 23417c478bd9Sstevel@tonic-gate /* 23427c478bd9Sstevel@tonic-gate * Configuration environment processing. Called after the a.out has been 23437c478bd9Sstevel@tonic-gate * processed (as the a.out can specify its own configuration file). 23447c478bd9Sstevel@tonic-gate */ 23457c478bd9Sstevel@tonic-gate int 23467c478bd9Sstevel@tonic-gate readenv_config(Rtc_env * envtbl, Addr addr, int aout) 23477c478bd9Sstevel@tonic-gate { 23489aa23310Srie Word *lmflags = &(lml_main.lm_flags); 23499aa23310Srie Word *lmtflags = &(lml_main.lm_tflags); 23507c478bd9Sstevel@tonic-gate 235156deab07SRod Evans if (envtbl == NULL) 23527c478bd9Sstevel@tonic-gate return (0); 23537c478bd9Sstevel@tonic-gate 23547c478bd9Sstevel@tonic-gate while (envtbl->env_str) { 23557c478bd9Sstevel@tonic-gate uint_t env_flags = ENV_TYP_CONFIG; 23567c478bd9Sstevel@tonic-gate 23577c478bd9Sstevel@tonic-gate if (envtbl->env_flags & RTC_ENV_PERMANT) 23587c478bd9Sstevel@tonic-gate env_flags |= ENV_TYP_PERMANT; 23597c478bd9Sstevel@tonic-gate 23607c478bd9Sstevel@tonic-gate ld_str_env((const char *)(envtbl->env_str + addr), 23617c478bd9Sstevel@tonic-gate lmflags, lmtflags, env_flags, 0); 23627c478bd9Sstevel@tonic-gate envtbl++; 23637c478bd9Sstevel@tonic-gate } 23647c478bd9Sstevel@tonic-gate 23657c478bd9Sstevel@tonic-gate /* 23667c478bd9Sstevel@tonic-gate * Having collected the best representation of any LD_FLAGS, process 23677c478bd9Sstevel@tonic-gate * these strings. 23687c478bd9Sstevel@tonic-gate */ 23697c478bd9Sstevel@tonic-gate if (ld_flags_env(rpl_ldflags, lmflags, lmtflags, 0, aout) == 1) 23707c478bd9Sstevel@tonic-gate return (1); 23717c478bd9Sstevel@tonic-gate if (ld_flags_env(prm_ldflags, lmflags, lmtflags, ENV_TYP_CONFIG, 23727c478bd9Sstevel@tonic-gate aout) == 1) 23737c478bd9Sstevel@tonic-gate return (1); 23747c478bd9Sstevel@tonic-gate 23757c478bd9Sstevel@tonic-gate /* 23767c478bd9Sstevel@tonic-gate * Don't allow environment controlled auditing when tracing or if 23777c478bd9Sstevel@tonic-gate * explicitly disabled. Trigger all tracing modes from 23787c478bd9Sstevel@tonic-gate * LML_FLG_TRC_ENABLE. 23797c478bd9Sstevel@tonic-gate */ 23807c478bd9Sstevel@tonic-gate if ((*lmflags & LML_FLG_TRC_ENABLE) || (rtld_flags & RT_FL_NOAUDIT)) 238156deab07SRod Evans prm_audit = profile_lib = profile_name = NULL; 23827c478bd9Sstevel@tonic-gate if ((*lmflags & LML_FLG_TRC_ENABLE) == 0) 23837c478bd9Sstevel@tonic-gate *lmflags &= ~LML_MSK_TRC; 23847c478bd9Sstevel@tonic-gate 23857c478bd9Sstevel@tonic-gate return (0); 23867c478bd9Sstevel@tonic-gate } 23877c478bd9Sstevel@tonic-gate 23887c478bd9Sstevel@tonic-gate int 23897c478bd9Sstevel@tonic-gate dowrite(Prfbuf * prf) 23907c478bd9Sstevel@tonic-gate { 23917c478bd9Sstevel@tonic-gate /* 23927c478bd9Sstevel@tonic-gate * We do not have a valid file descriptor, so we are unable 23937c478bd9Sstevel@tonic-gate * to flush the buffer. 23947c478bd9Sstevel@tonic-gate */ 23957c478bd9Sstevel@tonic-gate if (prf->pr_fd == -1) 23967c478bd9Sstevel@tonic-gate return (0); 23977c478bd9Sstevel@tonic-gate (void) write(prf->pr_fd, prf->pr_buf, prf->pr_cur - prf->pr_buf); 23987c478bd9Sstevel@tonic-gate prf->pr_cur = prf->pr_buf; 23997c478bd9Sstevel@tonic-gate return (1); 24007c478bd9Sstevel@tonic-gate } 24017c478bd9Sstevel@tonic-gate 24027c478bd9Sstevel@tonic-gate /* 24037c478bd9Sstevel@tonic-gate * Simplified printing. The following conversion specifications are supported: 24047c478bd9Sstevel@tonic-gate * 24057c478bd9Sstevel@tonic-gate * % [#] [-] [min field width] [. precision] s|d|x|c 24067c478bd9Sstevel@tonic-gate * 24077c478bd9Sstevel@tonic-gate * 24087c478bd9Sstevel@tonic-gate * dorprf takes the output buffer in the form of Prfbuf which permits 24097c478bd9Sstevel@tonic-gate * the verification of the output buffer size and the concatenation 24107c478bd9Sstevel@tonic-gate * of data to an already existing output buffer. The Prfbuf 24117c478bd9Sstevel@tonic-gate * structure contains the following: 24127c478bd9Sstevel@tonic-gate * 24137c478bd9Sstevel@tonic-gate * pr_buf pointer to the beginning of the output buffer. 24147c478bd9Sstevel@tonic-gate * pr_cur pointer to the next available byte in the output buffer. By 24157c478bd9Sstevel@tonic-gate * setting pr_cur ahead of pr_buf you can append to an already 24167c478bd9Sstevel@tonic-gate * existing buffer. 24177c478bd9Sstevel@tonic-gate * pr_len the size of the output buffer. By setting pr_len to '0' you 24187c478bd9Sstevel@tonic-gate * disable protection from overflows in the output buffer. 24197c478bd9Sstevel@tonic-gate * pr_fd a pointer to the file-descriptor the buffer will eventually be 24207c478bd9Sstevel@tonic-gate * output to. If pr_fd is set to '-1' then it's assumed there is 24211d6b7ad8Srie * no output buffer, and doprf() will return with an error to 24221d6b7ad8Srie * indicate an output buffer overflow. If pr_fd is > -1 then when 24231d6b7ad8Srie * the output buffer is filled it will be flushed to pr_fd and will 24241d6b7ad8Srie * then be available for additional data. 24257c478bd9Sstevel@tonic-gate */ 24267c478bd9Sstevel@tonic-gate #define FLG_UT_MINUS 0x0001 /* - */ 24277c478bd9Sstevel@tonic-gate #define FLG_UT_SHARP 0x0002 /* # */ 24287c478bd9Sstevel@tonic-gate #define FLG_UT_DOTSEEN 0x0008 /* dot appeared in format spec */ 24297c478bd9Sstevel@tonic-gate 24307c478bd9Sstevel@tonic-gate /* 243110a4fa49Srie * This macro is for use from within doprf only. It is to be used for checking 243210a4fa49Srie * the output buffer size and placing characters into the buffer. 24337c478bd9Sstevel@tonic-gate */ 24347c478bd9Sstevel@tonic-gate #define PUTC(c) \ 24357c478bd9Sstevel@tonic-gate { \ 243610a4fa49Srie char tmpc; \ 24377c478bd9Sstevel@tonic-gate \ 24387c478bd9Sstevel@tonic-gate tmpc = (c); \ 243910a4fa49Srie if (bufsiz && (bp >= bufend)) { \ 24407c478bd9Sstevel@tonic-gate prf->pr_cur = bp; \ 24417c478bd9Sstevel@tonic-gate if (dowrite(prf) == 0) \ 24427c478bd9Sstevel@tonic-gate return (0); \ 24437c478bd9Sstevel@tonic-gate bp = prf->pr_cur; \ 24447c478bd9Sstevel@tonic-gate } \ 24457c478bd9Sstevel@tonic-gate *bp++ = tmpc; \ 24467c478bd9Sstevel@tonic-gate } 24477c478bd9Sstevel@tonic-gate 24481d6b7ad8Srie /* 24491d6b7ad8Srie * Define a local buffer size for building a numeric value - large enough to 24501d6b7ad8Srie * hold a 64-bit value. 24511d6b7ad8Srie */ 2452051d39bbSrie #define NUM_SIZE 22 24531d6b7ad8Srie 24547c478bd9Sstevel@tonic-gate size_t 24557c478bd9Sstevel@tonic-gate doprf(const char *format, va_list args, Prfbuf *prf) 24567c478bd9Sstevel@tonic-gate { 24577c478bd9Sstevel@tonic-gate char c; 24587c478bd9Sstevel@tonic-gate char *bp = prf->pr_cur; 24597c478bd9Sstevel@tonic-gate char *bufend = prf->pr_buf + prf->pr_len; 24607c478bd9Sstevel@tonic-gate size_t bufsiz = prf->pr_len; 24617c478bd9Sstevel@tonic-gate 24627c478bd9Sstevel@tonic-gate while ((c = *format++) != '\0') { 24637c478bd9Sstevel@tonic-gate if (c != '%') { 24647c478bd9Sstevel@tonic-gate PUTC(c); 24657c478bd9Sstevel@tonic-gate } else { 24667c478bd9Sstevel@tonic-gate int base = 0, flag = 0, width = 0, prec = 0; 24677c478bd9Sstevel@tonic-gate size_t _i; 24687c478bd9Sstevel@tonic-gate int _c, _n; 24697c478bd9Sstevel@tonic-gate char *_s; 24707c478bd9Sstevel@tonic-gate int ls = 0; 24717c478bd9Sstevel@tonic-gate again: 24727c478bd9Sstevel@tonic-gate c = *format++; 24737c478bd9Sstevel@tonic-gate switch (c) { 24747c478bd9Sstevel@tonic-gate case '-': 24757c478bd9Sstevel@tonic-gate flag |= FLG_UT_MINUS; 24767c478bd9Sstevel@tonic-gate goto again; 24777c478bd9Sstevel@tonic-gate case '#': 24787c478bd9Sstevel@tonic-gate flag |= FLG_UT_SHARP; 24797c478bd9Sstevel@tonic-gate goto again; 24807c478bd9Sstevel@tonic-gate case '.': 24817c478bd9Sstevel@tonic-gate flag |= FLG_UT_DOTSEEN; 24827c478bd9Sstevel@tonic-gate goto again; 24837c478bd9Sstevel@tonic-gate case '0': 24847c478bd9Sstevel@tonic-gate case '1': 24857c478bd9Sstevel@tonic-gate case '2': 24867c478bd9Sstevel@tonic-gate case '3': 24877c478bd9Sstevel@tonic-gate case '4': 24887c478bd9Sstevel@tonic-gate case '5': 24897c478bd9Sstevel@tonic-gate case '6': 24907c478bd9Sstevel@tonic-gate case '7': 24917c478bd9Sstevel@tonic-gate case '8': 24927c478bd9Sstevel@tonic-gate case '9': 24937c478bd9Sstevel@tonic-gate if (flag & FLG_UT_DOTSEEN) 24947c478bd9Sstevel@tonic-gate prec = (prec * 10) + c - '0'; 24957c478bd9Sstevel@tonic-gate else 24967c478bd9Sstevel@tonic-gate width = (width * 10) + c - '0'; 24977c478bd9Sstevel@tonic-gate goto again; 24987c478bd9Sstevel@tonic-gate case 'x': 24997c478bd9Sstevel@tonic-gate case 'X': 25007c478bd9Sstevel@tonic-gate base = 16; 25017c478bd9Sstevel@tonic-gate break; 25027c478bd9Sstevel@tonic-gate case 'd': 25037c478bd9Sstevel@tonic-gate case 'D': 25047c478bd9Sstevel@tonic-gate case 'u': 25057c478bd9Sstevel@tonic-gate base = 10; 25067c478bd9Sstevel@tonic-gate flag &= ~FLG_UT_SHARP; 25077c478bd9Sstevel@tonic-gate break; 25087c478bd9Sstevel@tonic-gate case 'l': 25097c478bd9Sstevel@tonic-gate base = 10; 25107c478bd9Sstevel@tonic-gate ls++; /* number of l's (long or long long) */ 25117c478bd9Sstevel@tonic-gate if ((*format == 'l') || 25127c478bd9Sstevel@tonic-gate (*format == 'd') || (*format == 'D') || 25137c478bd9Sstevel@tonic-gate (*format == 'x') || (*format == 'X') || 25147c478bd9Sstevel@tonic-gate (*format == 'o') || (*format == 'O')) 25157c478bd9Sstevel@tonic-gate goto again; 25167c478bd9Sstevel@tonic-gate break; 25177c478bd9Sstevel@tonic-gate case 'o': 25187c478bd9Sstevel@tonic-gate case 'O': 25197c478bd9Sstevel@tonic-gate base = 8; 25207c478bd9Sstevel@tonic-gate break; 25217c478bd9Sstevel@tonic-gate case 'c': 25227c478bd9Sstevel@tonic-gate _c = va_arg(args, int); 25237c478bd9Sstevel@tonic-gate 25247c478bd9Sstevel@tonic-gate for (_i = 24; _i > 0; _i -= 8) { 25257c478bd9Sstevel@tonic-gate if ((c = ((_c >> _i) & 0x7f)) != 0) { 25267c478bd9Sstevel@tonic-gate PUTC(c); 25277c478bd9Sstevel@tonic-gate } 25287c478bd9Sstevel@tonic-gate } 25297c478bd9Sstevel@tonic-gate if ((c = ((_c >> _i) & 0x7f)) != 0) { 25307c478bd9Sstevel@tonic-gate PUTC(c); 25317c478bd9Sstevel@tonic-gate } 25327c478bd9Sstevel@tonic-gate break; 25337c478bd9Sstevel@tonic-gate case 's': 25347c478bd9Sstevel@tonic-gate _s = va_arg(args, char *); 25357c478bd9Sstevel@tonic-gate _i = strlen(_s); 25367c478bd9Sstevel@tonic-gate /* LINTED */ 25377c478bd9Sstevel@tonic-gate _n = (int)(width - _i); 25387c478bd9Sstevel@tonic-gate if (!prec) 25397c478bd9Sstevel@tonic-gate /* LINTED */ 25407c478bd9Sstevel@tonic-gate prec = (int)_i; 25417c478bd9Sstevel@tonic-gate 25427c478bd9Sstevel@tonic-gate if (width && !(flag & FLG_UT_MINUS)) { 25437c478bd9Sstevel@tonic-gate while (_n-- > 0) 25447c478bd9Sstevel@tonic-gate PUTC(' '); 25457c478bd9Sstevel@tonic-gate } 25467c478bd9Sstevel@tonic-gate while (((c = *_s++) != 0) && prec--) { 25477c478bd9Sstevel@tonic-gate PUTC(c); 25487c478bd9Sstevel@tonic-gate } 25497c478bd9Sstevel@tonic-gate if (width && (flag & FLG_UT_MINUS)) { 25507c478bd9Sstevel@tonic-gate while (_n-- > 0) 25517c478bd9Sstevel@tonic-gate PUTC(' '); 25527c478bd9Sstevel@tonic-gate } 25537c478bd9Sstevel@tonic-gate break; 25547c478bd9Sstevel@tonic-gate case '%': 25557c478bd9Sstevel@tonic-gate PUTC('%'); 25567c478bd9Sstevel@tonic-gate break; 25577c478bd9Sstevel@tonic-gate default: 25587c478bd9Sstevel@tonic-gate break; 25597c478bd9Sstevel@tonic-gate } 25607c478bd9Sstevel@tonic-gate 25617c478bd9Sstevel@tonic-gate /* 25627c478bd9Sstevel@tonic-gate * Numeric processing 25637c478bd9Sstevel@tonic-gate */ 25647c478bd9Sstevel@tonic-gate if (base) { 25651d6b7ad8Srie char local[NUM_SIZE]; 25661d6b7ad8Srie size_t ssize = 0, psize = 0; 25677c478bd9Sstevel@tonic-gate const char *string = 2568a953e2b1Srie MSG_ORIG(MSG_STR_HEXNUM); 25697c478bd9Sstevel@tonic-gate const char *prefix = 2570a953e2b1Srie MSG_ORIG(MSG_STR_EMPTY); 25717c478bd9Sstevel@tonic-gate u_longlong_t num; 25727c478bd9Sstevel@tonic-gate 25737c478bd9Sstevel@tonic-gate switch (ls) { 25747c478bd9Sstevel@tonic-gate case 0: /* int */ 25757c478bd9Sstevel@tonic-gate num = (u_longlong_t) 25767c478bd9Sstevel@tonic-gate va_arg(args, uint_t); 25777c478bd9Sstevel@tonic-gate break; 25787c478bd9Sstevel@tonic-gate case 1: /* long */ 25797c478bd9Sstevel@tonic-gate num = (u_longlong_t) 25807c478bd9Sstevel@tonic-gate va_arg(args, ulong_t); 25817c478bd9Sstevel@tonic-gate break; 25827c478bd9Sstevel@tonic-gate case 2: /* long long */ 25837c478bd9Sstevel@tonic-gate num = va_arg(args, u_longlong_t); 25847c478bd9Sstevel@tonic-gate break; 25857c478bd9Sstevel@tonic-gate } 25867c478bd9Sstevel@tonic-gate 25877c478bd9Sstevel@tonic-gate if (flag & FLG_UT_SHARP) { 25887c478bd9Sstevel@tonic-gate if (base == 16) { 25897c478bd9Sstevel@tonic-gate prefix = MSG_ORIG(MSG_STR_HEX); 25907c478bd9Sstevel@tonic-gate psize = 2; 25917c478bd9Sstevel@tonic-gate } else { 25927c478bd9Sstevel@tonic-gate prefix = MSG_ORIG(MSG_STR_ZERO); 25937c478bd9Sstevel@tonic-gate psize = 1; 25947c478bd9Sstevel@tonic-gate } 25957c478bd9Sstevel@tonic-gate } 25967c478bd9Sstevel@tonic-gate if ((base == 10) && (long)num < 0) { 25977c478bd9Sstevel@tonic-gate prefix = MSG_ORIG(MSG_STR_NEGATE); 25987c478bd9Sstevel@tonic-gate psize = MSG_STR_NEGATE_SIZE; 25997c478bd9Sstevel@tonic-gate num = (u_longlong_t)(-(longlong_t)num); 26007c478bd9Sstevel@tonic-gate } 26017c478bd9Sstevel@tonic-gate 26027c478bd9Sstevel@tonic-gate /* 26037c478bd9Sstevel@tonic-gate * Convert the numeric value into a local 26047c478bd9Sstevel@tonic-gate * string (stored in reverse order). 26057c478bd9Sstevel@tonic-gate */ 26067c478bd9Sstevel@tonic-gate _s = local; 26077c478bd9Sstevel@tonic-gate do { 26087c478bd9Sstevel@tonic-gate *_s++ = string[num % base]; 26097c478bd9Sstevel@tonic-gate num /= base; 26107c478bd9Sstevel@tonic-gate ssize++; 26117c478bd9Sstevel@tonic-gate } while (num); 26127c478bd9Sstevel@tonic-gate 26131d6b7ad8Srie ASSERT(ssize < sizeof (local)); 26141d6b7ad8Srie 26157c478bd9Sstevel@tonic-gate /* 26167c478bd9Sstevel@tonic-gate * Provide any precision or width padding. 26177c478bd9Sstevel@tonic-gate */ 26187c478bd9Sstevel@tonic-gate if (prec) { 26197c478bd9Sstevel@tonic-gate /* LINTED */ 26207c478bd9Sstevel@tonic-gate _n = (int)(prec - ssize); 26211d6b7ad8Srie while ((_n-- > 0) && 26221d6b7ad8Srie (ssize < sizeof (local))) { 26237c478bd9Sstevel@tonic-gate *_s++ = '0'; 26247c478bd9Sstevel@tonic-gate ssize++; 26257c478bd9Sstevel@tonic-gate } 26267c478bd9Sstevel@tonic-gate } 26277c478bd9Sstevel@tonic-gate if (width && !(flag & FLG_UT_MINUS)) { 26287c478bd9Sstevel@tonic-gate /* LINTED */ 26297c478bd9Sstevel@tonic-gate _n = (int)(width - ssize - psize); 26307c478bd9Sstevel@tonic-gate while (_n-- > 0) { 26317c478bd9Sstevel@tonic-gate PUTC(' '); 26327c478bd9Sstevel@tonic-gate } 26337c478bd9Sstevel@tonic-gate } 26347c478bd9Sstevel@tonic-gate 26357c478bd9Sstevel@tonic-gate /* 26367c478bd9Sstevel@tonic-gate * Print any prefix and the numeric string 26377c478bd9Sstevel@tonic-gate */ 26387c478bd9Sstevel@tonic-gate while (*prefix) 26397c478bd9Sstevel@tonic-gate PUTC(*prefix++); 26407c478bd9Sstevel@tonic-gate do { 26417c478bd9Sstevel@tonic-gate PUTC(*--_s); 26427c478bd9Sstevel@tonic-gate } while (_s > local); 26437c478bd9Sstevel@tonic-gate 26447c478bd9Sstevel@tonic-gate /* 26457c478bd9Sstevel@tonic-gate * Provide any width padding. 26467c478bd9Sstevel@tonic-gate */ 26477c478bd9Sstevel@tonic-gate if (width && (flag & FLG_UT_MINUS)) { 26487c478bd9Sstevel@tonic-gate /* LINTED */ 26497c478bd9Sstevel@tonic-gate _n = (int)(width - ssize - psize); 26507c478bd9Sstevel@tonic-gate while (_n-- > 0) 26517c478bd9Sstevel@tonic-gate PUTC(' '); 26527c478bd9Sstevel@tonic-gate } 26537c478bd9Sstevel@tonic-gate } 26547c478bd9Sstevel@tonic-gate } 26557c478bd9Sstevel@tonic-gate } 265610a4fa49Srie 26577c478bd9Sstevel@tonic-gate PUTC('\0'); 26587c478bd9Sstevel@tonic-gate prf->pr_cur = bp; 26597c478bd9Sstevel@tonic-gate return (1); 26607c478bd9Sstevel@tonic-gate } 26617c478bd9Sstevel@tonic-gate 26627c478bd9Sstevel@tonic-gate static int 26637c478bd9Sstevel@tonic-gate doprintf(const char *format, va_list args, Prfbuf *prf) 26647c478bd9Sstevel@tonic-gate { 26657c478bd9Sstevel@tonic-gate char *ocur = prf->pr_cur; 26667c478bd9Sstevel@tonic-gate 26677c478bd9Sstevel@tonic-gate if (doprf(format, args, prf) == 0) 26687c478bd9Sstevel@tonic-gate return (0); 26697c478bd9Sstevel@tonic-gate /* LINTED */ 26707c478bd9Sstevel@tonic-gate return ((int)(prf->pr_cur - ocur)); 26717c478bd9Sstevel@tonic-gate } 26727c478bd9Sstevel@tonic-gate 26737c478bd9Sstevel@tonic-gate /* VARARGS2 */ 26747c478bd9Sstevel@tonic-gate int 26757c478bd9Sstevel@tonic-gate sprintf(char *buf, const char *format, ...) 26767c478bd9Sstevel@tonic-gate { 26777c478bd9Sstevel@tonic-gate va_list args; 26787c478bd9Sstevel@tonic-gate int len; 26797c478bd9Sstevel@tonic-gate Prfbuf prf; 26807c478bd9Sstevel@tonic-gate 26817c478bd9Sstevel@tonic-gate va_start(args, format); 26827c478bd9Sstevel@tonic-gate prf.pr_buf = prf.pr_cur = buf; 26837c478bd9Sstevel@tonic-gate prf.pr_len = 0; 26847c478bd9Sstevel@tonic-gate prf.pr_fd = -1; 26857c478bd9Sstevel@tonic-gate len = doprintf(format, args, &prf); 26867c478bd9Sstevel@tonic-gate va_end(args); 26877c478bd9Sstevel@tonic-gate 26887c478bd9Sstevel@tonic-gate /* 26897c478bd9Sstevel@tonic-gate * sprintf() return value excludes the terminating null byte. 26907c478bd9Sstevel@tonic-gate */ 26917c478bd9Sstevel@tonic-gate return (len - 1); 26927c478bd9Sstevel@tonic-gate } 26937c478bd9Sstevel@tonic-gate 26947c478bd9Sstevel@tonic-gate /* VARARGS3 */ 26957c478bd9Sstevel@tonic-gate int 26967c478bd9Sstevel@tonic-gate snprintf(char *buf, size_t n, const char *format, ...) 26977c478bd9Sstevel@tonic-gate { 26987c478bd9Sstevel@tonic-gate va_list args; 26997c478bd9Sstevel@tonic-gate int len; 27007c478bd9Sstevel@tonic-gate Prfbuf prf; 27017c478bd9Sstevel@tonic-gate 27027c478bd9Sstevel@tonic-gate va_start(args, format); 27037c478bd9Sstevel@tonic-gate prf.pr_buf = prf.pr_cur = buf; 27047c478bd9Sstevel@tonic-gate prf.pr_len = n; 27057c478bd9Sstevel@tonic-gate prf.pr_fd = -1; 27067c478bd9Sstevel@tonic-gate len = doprintf(format, args, &prf); 27077c478bd9Sstevel@tonic-gate va_end(args); 27087c478bd9Sstevel@tonic-gate 27097c478bd9Sstevel@tonic-gate return (len); 27107c478bd9Sstevel@tonic-gate } 27117c478bd9Sstevel@tonic-gate 27127c478bd9Sstevel@tonic-gate /* VARARGS2 */ 27137c478bd9Sstevel@tonic-gate int 27147c478bd9Sstevel@tonic-gate bufprint(Prfbuf *prf, const char *format, ...) 27157c478bd9Sstevel@tonic-gate { 27167c478bd9Sstevel@tonic-gate va_list args; 27177c478bd9Sstevel@tonic-gate int len; 27187c478bd9Sstevel@tonic-gate 27197c478bd9Sstevel@tonic-gate va_start(args, format); 27207c478bd9Sstevel@tonic-gate len = doprintf(format, args, prf); 27217c478bd9Sstevel@tonic-gate va_end(args); 27227c478bd9Sstevel@tonic-gate 27237c478bd9Sstevel@tonic-gate return (len); 27247c478bd9Sstevel@tonic-gate } 27257c478bd9Sstevel@tonic-gate 27267c478bd9Sstevel@tonic-gate /*PRINTFLIKE1*/ 27277c478bd9Sstevel@tonic-gate int 27287c478bd9Sstevel@tonic-gate printf(const char *format, ...) 27297c478bd9Sstevel@tonic-gate { 27307c478bd9Sstevel@tonic-gate va_list args; 27317c478bd9Sstevel@tonic-gate char buffer[ERRSIZE]; 27327c478bd9Sstevel@tonic-gate Prfbuf prf; 27337c478bd9Sstevel@tonic-gate 27347c478bd9Sstevel@tonic-gate va_start(args, format); 27357c478bd9Sstevel@tonic-gate prf.pr_buf = prf.pr_cur = buffer; 27367c478bd9Sstevel@tonic-gate prf.pr_len = ERRSIZE; 27377c478bd9Sstevel@tonic-gate prf.pr_fd = 1; 27387c478bd9Sstevel@tonic-gate (void) doprf(format, args, &prf); 27397c478bd9Sstevel@tonic-gate va_end(args); 27407c478bd9Sstevel@tonic-gate /* 27417c478bd9Sstevel@tonic-gate * Trim trailing '\0' form buffer 27427c478bd9Sstevel@tonic-gate */ 27437c478bd9Sstevel@tonic-gate prf.pr_cur--; 27447c478bd9Sstevel@tonic-gate return (dowrite(&prf)); 27457c478bd9Sstevel@tonic-gate } 27467c478bd9Sstevel@tonic-gate 274743d7826aSRod Evans static char errbuf[ERRSIZE], *nextptr = errbuf, *prevptr = NULL; 27487c478bd9Sstevel@tonic-gate 274956deab07SRod Evans /* 275056deab07SRod Evans * All error messages go through eprintf(). During process initialization, 275156deab07SRod Evans * these messages are directed to the standard error, however once control has 275256deab07SRod Evans * been passed to the applications code these messages are stored in an internal 275356deab07SRod Evans * buffer for use with dlerror(). Note, fatal error conditions that may occur 275456deab07SRod Evans * while running the application will still cause a standard error message, see 275556deab07SRod Evans * rtldexit() in this file for details. 275656deab07SRod Evans * The RT_FL_APPLIC flag serves to indicate the transition between process 275756deab07SRod Evans * initialization and when the applications code is running. 275856deab07SRod Evans */ 27595aefb655Srie /*PRINTFLIKE3*/ 27607c478bd9Sstevel@tonic-gate void 27615aefb655Srie eprintf(Lm_list *lml, Error error, const char *format, ...) 27627c478bd9Sstevel@tonic-gate { 27637c478bd9Sstevel@tonic-gate va_list args; 27647c478bd9Sstevel@tonic-gate int overflow = 0; 27657c478bd9Sstevel@tonic-gate static int lock = 0; 27667c478bd9Sstevel@tonic-gate Prfbuf prf; 27677c478bd9Sstevel@tonic-gate 27687c478bd9Sstevel@tonic-gate if (lock || (nextptr == (errbuf + ERRSIZE))) 27697c478bd9Sstevel@tonic-gate return; 27707c478bd9Sstevel@tonic-gate 27717c478bd9Sstevel@tonic-gate /* 27727c478bd9Sstevel@tonic-gate * Note: this lock is here to prevent the same thread from recursively 27737c478bd9Sstevel@tonic-gate * entering itself during a eprintf. ie: during eprintf malloc() fails 27747c478bd9Sstevel@tonic-gate * and we try and call eprintf ... and then malloc() fails .... 27757c478bd9Sstevel@tonic-gate */ 27767c478bd9Sstevel@tonic-gate lock = 1; 27777c478bd9Sstevel@tonic-gate 27787c478bd9Sstevel@tonic-gate /* 27797c478bd9Sstevel@tonic-gate * If we have completed startup initialization, all error messages 27807c478bd9Sstevel@tonic-gate * must be saved. These are reported through dlerror(). If we're 27817c478bd9Sstevel@tonic-gate * still in the initialization stage, output the error directly and 27827c478bd9Sstevel@tonic-gate * add a newline. 27837c478bd9Sstevel@tonic-gate */ 27847c478bd9Sstevel@tonic-gate va_start(args, format); 27857c478bd9Sstevel@tonic-gate 27867c478bd9Sstevel@tonic-gate prf.pr_buf = prf.pr_cur = nextptr; 27877c478bd9Sstevel@tonic-gate prf.pr_len = ERRSIZE - (nextptr - errbuf); 27887c478bd9Sstevel@tonic-gate 27897c478bd9Sstevel@tonic-gate if (!(rtld_flags & RT_FL_APPLIC)) 27907c478bd9Sstevel@tonic-gate prf.pr_fd = 2; 27917c478bd9Sstevel@tonic-gate else 27927c478bd9Sstevel@tonic-gate prf.pr_fd = -1; 27937c478bd9Sstevel@tonic-gate 27947c478bd9Sstevel@tonic-gate if (error > ERR_NONE) { 27957c478bd9Sstevel@tonic-gate if ((error == ERR_FATAL) && (rtld_flags2 & RT_FL2_FTL2WARN)) 27967c478bd9Sstevel@tonic-gate error = ERR_WARNING; 27977c478bd9Sstevel@tonic-gate if (error == ERR_WARNING) { 279843d7826aSRod Evans if (err_strs[ERR_WARNING] == NULL) 2799a953e2b1Srie err_strs[ERR_WARNING] = 2800a953e2b1Srie MSG_INTL(MSG_ERR_WARNING); 28017c478bd9Sstevel@tonic-gate } else if (error == ERR_FATAL) { 280243d7826aSRod Evans if (err_strs[ERR_FATAL] == NULL) 2803a953e2b1Srie err_strs[ERR_FATAL] = MSG_INTL(MSG_ERR_FATAL); 28047c478bd9Sstevel@tonic-gate } else if (error == ERR_ELF) { 280543d7826aSRod Evans if (err_strs[ERR_ELF] == NULL) 2806a953e2b1Srie err_strs[ERR_ELF] = MSG_INTL(MSG_ERR_ELF); 28077c478bd9Sstevel@tonic-gate } 280841072f3cSrie if (procname) { 280941072f3cSrie if (bufprint(&prf, MSG_ORIG(MSG_STR_EMSGFOR1), 281041072f3cSrie rtldname, procname, err_strs[error]) == 0) 281141072f3cSrie overflow = 1; 28127c478bd9Sstevel@tonic-gate } else { 281341072f3cSrie if (bufprint(&prf, MSG_ORIG(MSG_STR_EMSGFOR2), 281441072f3cSrie rtldname, err_strs[error]) == 0) 281541072f3cSrie overflow = 1; 281641072f3cSrie } 281741072f3cSrie if (overflow == 0) { 28187c478bd9Sstevel@tonic-gate /* 28197c478bd9Sstevel@tonic-gate * Remove the terminating '\0'. 28207c478bd9Sstevel@tonic-gate */ 28217c478bd9Sstevel@tonic-gate prf.pr_cur--; 28227c478bd9Sstevel@tonic-gate } 28237c478bd9Sstevel@tonic-gate } 28247c478bd9Sstevel@tonic-gate 28257c478bd9Sstevel@tonic-gate if ((overflow == 0) && doprf(format, args, &prf) == 0) 28267c478bd9Sstevel@tonic-gate overflow = 1; 28277c478bd9Sstevel@tonic-gate 28287c478bd9Sstevel@tonic-gate /* 28297c478bd9Sstevel@tonic-gate * If this is an ELF error, it will have been generated by a support 28307c478bd9Sstevel@tonic-gate * object that has a dependency on libelf. ld.so.1 doesn't generate any 28317c478bd9Sstevel@tonic-gate * ELF error messages as it doesn't interact with libelf. Determine the 28327c478bd9Sstevel@tonic-gate * ELF error string. 28337c478bd9Sstevel@tonic-gate */ 28347c478bd9Sstevel@tonic-gate if ((overflow == 0) && (error == ERR_ELF)) { 28357c478bd9Sstevel@tonic-gate static int (*elfeno)() = 0; 28367c478bd9Sstevel@tonic-gate static const char *(*elfemg)(); 28377c478bd9Sstevel@tonic-gate const char *emsg; 28387c478bd9Sstevel@tonic-gate Rt_map *dlmp, *lmp = lml_rtld.lm_head; 28397c478bd9Sstevel@tonic-gate 28407c478bd9Sstevel@tonic-gate if (NEXT(lmp) && (elfeno == 0)) { 28417c478bd9Sstevel@tonic-gate if (((elfemg = (const char *(*)())dlsym_intn(RTLD_NEXT, 284243d7826aSRod Evans MSG_ORIG(MSG_SYM_ELFERRMSG), 284343d7826aSRod Evans lmp, &dlmp)) == NULL) || 28447c478bd9Sstevel@tonic-gate ((elfeno = (int (*)())dlsym_intn(RTLD_NEXT, 284543d7826aSRod Evans MSG_ORIG(MSG_SYM_ELFERRNO), lmp, &dlmp)) == NULL)) 28467c478bd9Sstevel@tonic-gate elfeno = 0; 28477c478bd9Sstevel@tonic-gate } 28487c478bd9Sstevel@tonic-gate 28497c478bd9Sstevel@tonic-gate /* 28507c478bd9Sstevel@tonic-gate * Lookup the message; equivalent to elf_errmsg(elf_errno()). 28517c478bd9Sstevel@tonic-gate */ 285243d7826aSRod Evans if (elfeno && ((emsg = (* elfemg)((* elfeno)())) != NULL)) { 28537c478bd9Sstevel@tonic-gate prf.pr_cur--; 28547c478bd9Sstevel@tonic-gate if (bufprint(&prf, MSG_ORIG(MSG_STR_EMSGFOR2), 28557c478bd9Sstevel@tonic-gate emsg) == 0) 28567c478bd9Sstevel@tonic-gate overflow = 1; 28577c478bd9Sstevel@tonic-gate } 28587c478bd9Sstevel@tonic-gate } 28597c478bd9Sstevel@tonic-gate 28607c478bd9Sstevel@tonic-gate /* 28617c478bd9Sstevel@tonic-gate * Push out any message that's been built. Note, in the case of an 28627c478bd9Sstevel@tonic-gate * overflow condition, this message may be incomplete, in which case 28637c478bd9Sstevel@tonic-gate * make sure any partial string is null terminated. 28647c478bd9Sstevel@tonic-gate */ 28657c478bd9Sstevel@tonic-gate if ((rtld_flags & (RT_FL_APPLIC | RT_FL_SILENCERR)) == 0) { 28667c478bd9Sstevel@tonic-gate *(prf.pr_cur - 1) = '\n'; 28677c478bd9Sstevel@tonic-gate (void) dowrite(&prf); 28687c478bd9Sstevel@tonic-gate } 286956deab07SRod Evans if (overflow) 287056deab07SRod Evans *(prf.pr_cur - 1) = '\0'; 28717c478bd9Sstevel@tonic-gate 28725aefb655Srie DBG_CALL(Dbg_util_str(lml, nextptr)); 28737c478bd9Sstevel@tonic-gate va_end(args); 28747c478bd9Sstevel@tonic-gate 28757c478bd9Sstevel@tonic-gate /* 28767c478bd9Sstevel@tonic-gate * Determine if there was insufficient space left in the buffer to 28777c478bd9Sstevel@tonic-gate * complete the message. If so, we'll have printed out as much as had 28787c478bd9Sstevel@tonic-gate * been processed if we're not yet executing the application. 28797c478bd9Sstevel@tonic-gate * Otherwise, there will be some debugging diagnostic indicating 28807c478bd9Sstevel@tonic-gate * as much of the error message as possible. Write out a final buffer 28817c478bd9Sstevel@tonic-gate * overflow diagnostic - unlocalized, so we don't chance more errors. 28827c478bd9Sstevel@tonic-gate */ 28837c478bd9Sstevel@tonic-gate if (overflow) { 28847c478bd9Sstevel@tonic-gate char *str = (char *)MSG_INTL(MSG_EMG_BUFOVRFLW); 28857c478bd9Sstevel@tonic-gate 28867c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SILENCERR) == 0) { 28877c478bd9Sstevel@tonic-gate lasterr = str; 28887c478bd9Sstevel@tonic-gate 28897c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_APPLIC) == 0) { 28907c478bd9Sstevel@tonic-gate (void) write(2, str, strlen(str)); 28917c478bd9Sstevel@tonic-gate (void) write(2, MSG_ORIG(MSG_STR_NL), 28927c478bd9Sstevel@tonic-gate MSG_STR_NL_SIZE); 28937c478bd9Sstevel@tonic-gate } 28947c478bd9Sstevel@tonic-gate } 28955aefb655Srie DBG_CALL(Dbg_util_str(lml, str)); 28967c478bd9Sstevel@tonic-gate 28977c478bd9Sstevel@tonic-gate lock = 0; 28987c478bd9Sstevel@tonic-gate nextptr = errbuf + ERRSIZE; 28997c478bd9Sstevel@tonic-gate return; 29007c478bd9Sstevel@tonic-gate } 29017c478bd9Sstevel@tonic-gate 29027c478bd9Sstevel@tonic-gate /* 29037c478bd9Sstevel@tonic-gate * If the application has started, then error messages are being saved 29047c478bd9Sstevel@tonic-gate * for retrieval by dlerror(), or possible flushing from rtldexit() in 29057c478bd9Sstevel@tonic-gate * the case of a fatal error. In this case, establish the next error 29067c478bd9Sstevel@tonic-gate * pointer. If we haven't started the application, the whole message 29077c478bd9Sstevel@tonic-gate * buffer can be reused. 29087c478bd9Sstevel@tonic-gate */ 29097c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SILENCERR) == 0) { 29107c478bd9Sstevel@tonic-gate lasterr = nextptr; 29117c478bd9Sstevel@tonic-gate 29127c478bd9Sstevel@tonic-gate /* 29137c478bd9Sstevel@tonic-gate * Note, should we encounter an error such as ENOMEM, there may 29147c478bd9Sstevel@tonic-gate * be a number of the same error messages (ie. an operation 29157c478bd9Sstevel@tonic-gate * fails with ENOMEM, and then the attempts to construct the 29167c478bd9Sstevel@tonic-gate * error message itself, which incurs additional ENOMEM errors). 29177c478bd9Sstevel@tonic-gate * Compare any previous error message with the one we've just 29187c478bd9Sstevel@tonic-gate * created to prevent any duplication clutter. 29197c478bd9Sstevel@tonic-gate */ 29207c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_APPLIC) && 292143d7826aSRod Evans ((prevptr == NULL) || (strcmp(prevptr, nextptr) != 0))) { 29227c478bd9Sstevel@tonic-gate prevptr = nextptr; 29237c478bd9Sstevel@tonic-gate nextptr = prf.pr_cur; 29247c478bd9Sstevel@tonic-gate *nextptr = '\0'; 29257c478bd9Sstevel@tonic-gate } 29267c478bd9Sstevel@tonic-gate } 29277c478bd9Sstevel@tonic-gate lock = 0; 29287c478bd9Sstevel@tonic-gate } 29297c478bd9Sstevel@tonic-gate 29307c478bd9Sstevel@tonic-gate 29317c478bd9Sstevel@tonic-gate #if DEBUG 29327c478bd9Sstevel@tonic-gate /* 293356deab07SRod Evans * Provide assfail() for ASSERT() statements. See <sys/debug.h> for further 293456deab07SRod Evans * details. 29357c478bd9Sstevel@tonic-gate */ 29367c478bd9Sstevel@tonic-gate int 29377c478bd9Sstevel@tonic-gate assfail(const char *a, const char *f, int l) 29387c478bd9Sstevel@tonic-gate { 29397c478bd9Sstevel@tonic-gate (void) printf("assertion failed: %s, file: %s, line: %d\n", a, f, l); 29407c478bd9Sstevel@tonic-gate (void) _lwp_kill(_lwp_self(), SIGABRT); 29417c478bd9Sstevel@tonic-gate return (0); 29427c478bd9Sstevel@tonic-gate } 29437c478bd9Sstevel@tonic-gate #endif 29447c478bd9Sstevel@tonic-gate 29457c478bd9Sstevel@tonic-gate /* 29467c478bd9Sstevel@tonic-gate * Exit. If we arrive here with a non zero status it's because of a fatal 29477c478bd9Sstevel@tonic-gate * error condition (most commonly a relocation error). If the application has 29487c478bd9Sstevel@tonic-gate * already had control, then the actual fatal error message will have been 29497c478bd9Sstevel@tonic-gate * recorded in the dlerror() message buffer. Print the message before really 29507c478bd9Sstevel@tonic-gate * exiting. 29517c478bd9Sstevel@tonic-gate */ 29527c478bd9Sstevel@tonic-gate void 29537c478bd9Sstevel@tonic-gate rtldexit(Lm_list * lml, int status) 29547c478bd9Sstevel@tonic-gate { 29557c478bd9Sstevel@tonic-gate if (status) { 29567c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_APPLIC) { 29577c478bd9Sstevel@tonic-gate /* 29587c478bd9Sstevel@tonic-gate * If the error buffer has been used, write out all 29597c478bd9Sstevel@tonic-gate * pending messages - lasterr is simply a pointer to 29607c478bd9Sstevel@tonic-gate * the last message in this buffer. However, if the 29617c478bd9Sstevel@tonic-gate * buffer couldn't be created at all, lasterr points 29627c478bd9Sstevel@tonic-gate * to a constant error message string. 29637c478bd9Sstevel@tonic-gate */ 29647c478bd9Sstevel@tonic-gate if (*errbuf) { 29657c478bd9Sstevel@tonic-gate char *errptr = errbuf; 29667c478bd9Sstevel@tonic-gate char *errend = errbuf + ERRSIZE; 29677c478bd9Sstevel@tonic-gate 29687c478bd9Sstevel@tonic-gate while ((errptr < errend) && *errptr) { 29697c478bd9Sstevel@tonic-gate size_t size = strlen(errptr); 29707c478bd9Sstevel@tonic-gate (void) write(2, errptr, size); 29717c478bd9Sstevel@tonic-gate (void) write(2, MSG_ORIG(MSG_STR_NL), 29727c478bd9Sstevel@tonic-gate MSG_STR_NL_SIZE); 29737c478bd9Sstevel@tonic-gate errptr += (size + 1); 29747c478bd9Sstevel@tonic-gate } 29757c478bd9Sstevel@tonic-gate } 29767c478bd9Sstevel@tonic-gate if (lasterr && ((lasterr < errbuf) || 29777c478bd9Sstevel@tonic-gate (lasterr > (errbuf + ERRSIZE)))) { 29787c478bd9Sstevel@tonic-gate (void) write(2, lasterr, strlen(lasterr)); 29797c478bd9Sstevel@tonic-gate (void) write(2, MSG_ORIG(MSG_STR_NL), 29807c478bd9Sstevel@tonic-gate MSG_STR_NL_SIZE); 29817c478bd9Sstevel@tonic-gate } 29827c478bd9Sstevel@tonic-gate } 29838cd45542Sraf leave(lml, 0); 29847c478bd9Sstevel@tonic-gate (void) _lwp_kill(_lwp_self(), killsig); 29857c478bd9Sstevel@tonic-gate } 29867c478bd9Sstevel@tonic-gate _exit(status); 29877c478bd9Sstevel@tonic-gate } 29887c478bd9Sstevel@tonic-gate 29897c478bd9Sstevel@tonic-gate /* 299056deab07SRod Evans * Map anonymous memory via MAP_ANON (added in Solaris 8). 29917c478bd9Sstevel@tonic-gate */ 299256deab07SRod Evans void * 29935aefb655Srie dz_map(Lm_list *lml, caddr_t addr, size_t len, int prot, int flags) 29947c478bd9Sstevel@tonic-gate { 29957c478bd9Sstevel@tonic-gate caddr_t va; 29967c478bd9Sstevel@tonic-gate 299756deab07SRod Evans if ((va = (caddr_t)mmap(addr, len, prot, 299856deab07SRod Evans (flags | MAP_ANON), -1, 0)) == MAP_FAILED) { 299956deab07SRod Evans int err = errno; 300056deab07SRod Evans eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_MMAPANON), 300156deab07SRod Evans strerror(err)); 30027c478bd9Sstevel@tonic-gate return (MAP_FAILED); 30037c478bd9Sstevel@tonic-gate } 30047c478bd9Sstevel@tonic-gate return (va); 30057c478bd9Sstevel@tonic-gate } 30067c478bd9Sstevel@tonic-gate 30077c478bd9Sstevel@tonic-gate static int nu_fd = FD_UNAVAIL; 30087c478bd9Sstevel@tonic-gate 300956deab07SRod Evans void * 30105aefb655Srie nu_map(Lm_list *lml, caddr_t addr, size_t len, int prot, int flags) 30117c478bd9Sstevel@tonic-gate { 30127c478bd9Sstevel@tonic-gate caddr_t va; 30137c478bd9Sstevel@tonic-gate int err; 30147c478bd9Sstevel@tonic-gate 30157c478bd9Sstevel@tonic-gate if (nu_fd == FD_UNAVAIL) { 30167c478bd9Sstevel@tonic-gate if ((nu_fd = open(MSG_ORIG(MSG_PTH_DEVNULL), 30177c478bd9Sstevel@tonic-gate O_RDONLY)) == FD_UNAVAIL) { 30187c478bd9Sstevel@tonic-gate err = errno; 30195aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), 30207c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_DEVNULL), strerror(err)); 30217c478bd9Sstevel@tonic-gate return (MAP_FAILED); 30227c478bd9Sstevel@tonic-gate } 30237c478bd9Sstevel@tonic-gate } 30247c478bd9Sstevel@tonic-gate 30257c478bd9Sstevel@tonic-gate if ((va = (caddr_t)mmap(addr, len, prot, flags, nu_fd, 0)) == 30267c478bd9Sstevel@tonic-gate MAP_FAILED) { 30277c478bd9Sstevel@tonic-gate err = errno; 30285aefb655Srie eprintf(lml, ERR_FATAL, MSG_INTL(MSG_SYS_MMAP), 30297c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_DEVNULL), strerror(err)); 30307c478bd9Sstevel@tonic-gate } 30317c478bd9Sstevel@tonic-gate return (va); 30327c478bd9Sstevel@tonic-gate } 30337c478bd9Sstevel@tonic-gate 30347c478bd9Sstevel@tonic-gate /* 303575e7992aSrie * Generic entry point from user code - simply grabs a lock, and bumps the 303675e7992aSrie * entrance count. 30377c478bd9Sstevel@tonic-gate */ 30387c478bd9Sstevel@tonic-gate int 30398cd45542Sraf enter(int flags) 30407c478bd9Sstevel@tonic-gate { 30418cd45542Sraf if (rt_bind_guard(THR_FLG_RTLD | thr_flg_nolock | flags)) { 30428cd45542Sraf if (!thr_flg_nolock) 30438cd45542Sraf (void) rt_mutex_lock(&rtldlock); 3044*2017c965SRod Evans if (rtld_flags & RT_FL_OPERATION) { 30459aa23310Srie ld_entry_cnt++; 3046*2017c965SRod Evans 3047*2017c965SRod Evans /* 3048*2017c965SRod Evans * Reset the diagnostic time information for each new 3049*2017c965SRod Evans * "operation". Thus timing diagnostics are relative 3050*2017c965SRod Evans * to entering ld.so.1. 3051*2017c965SRod Evans */ 3052*2017c965SRod Evans if (DBG_ISTIME() && 3053*2017c965SRod Evans (gettimeofday(&DBG_TOTALTIME, NULL) == 0)) { 3054*2017c965SRod Evans DBG_DELTATIME = DBG_TOTALTIME; 3055*2017c965SRod Evans DBG_ONRESET(); 3056*2017c965SRod Evans } 3057*2017c965SRod Evans } 30587c478bd9Sstevel@tonic-gate return (1); 30597c478bd9Sstevel@tonic-gate } 30607c478bd9Sstevel@tonic-gate return (0); 30617c478bd9Sstevel@tonic-gate } 30627c478bd9Sstevel@tonic-gate 30639aa23310Srie /* 30649aa23310Srie * Determine whether a search path has been used. 30659aa23310Srie */ 30669aa23310Srie static void 306756deab07SRod Evans is_path_used(Lm_list *lml, Word unref, int *nl, Alist *alp, const char *obj) 30689aa23310Srie { 306956deab07SRod Evans Pdesc *pdp; 307056deab07SRod Evans Aliste idx; 307156deab07SRod Evans 307256deab07SRod Evans for (ALIST_TRAVERSE(alp, idx, pdp)) { 30739aa23310Srie const char *fmt, *name; 30749aa23310Srie 307556deab07SRod Evans if ((pdp->pd_plen == 0) || (pdp->pd_flags & PD_FLG_USED)) 30769aa23310Srie continue; 30779aa23310Srie 30789aa23310Srie /* 30799aa23310Srie * If this pathname originated from an expanded token, use the 30809aa23310Srie * original for any diagnostic output. 30819aa23310Srie */ 308256deab07SRod Evans if ((name = pdp->pd_oname) == NULL) 308356deab07SRod Evans name = pdp->pd_pname; 30849aa23310Srie 30859aa23310Srie if (unref == 0) { 30869aa23310Srie if ((*nl)++ == 0) 30879aa23310Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 308856deab07SRod Evans DBG_CALL(Dbg_unused_path(lml, name, pdp->pd_flags, 308956deab07SRod Evans (pdp->pd_flags & PD_FLG_DUPLICAT), obj)); 30909aa23310Srie continue; 30919aa23310Srie } 30929aa23310Srie 309356deab07SRod Evans if (pdp->pd_flags & LA_SER_LIBPATH) { 309456deab07SRod Evans if (pdp->pd_flags & LA_SER_CONFIG) { 309556deab07SRod Evans if (pdp->pd_flags & PD_FLG_DUPLICAT) 30969aa23310Srie fmt = MSG_INTL(MSG_DUP_LDLIBPATHC); 30979aa23310Srie else 30989aa23310Srie fmt = MSG_INTL(MSG_USD_LDLIBPATHC); 30999aa23310Srie } else { 310056deab07SRod Evans if (pdp->pd_flags & PD_FLG_DUPLICAT) 31019aa23310Srie fmt = MSG_INTL(MSG_DUP_LDLIBPATH); 31029aa23310Srie else 31039aa23310Srie fmt = MSG_INTL(MSG_USD_LDLIBPATH); 31049aa23310Srie } 310556deab07SRod Evans } else if (pdp->pd_flags & LA_SER_RUNPATH) { 31069aa23310Srie fmt = MSG_INTL(MSG_USD_RUNPATH); 31079aa23310Srie } else 31089aa23310Srie continue; 31099aa23310Srie 31109aa23310Srie if ((*nl)++ == 0) 31119aa23310Srie (void) printf(MSG_ORIG(MSG_STR_NL)); 31129aa23310Srie (void) printf(fmt, name, obj); 31139aa23310Srie } 31149aa23310Srie } 31159aa23310Srie 31167c478bd9Sstevel@tonic-gate /* 31177c478bd9Sstevel@tonic-gate * Generate diagnostics as to whether an object has been used. A symbolic 31187c478bd9Sstevel@tonic-gate * reference that gets bound to an object marks it as used. Dependencies that 31197c478bd9Sstevel@tonic-gate * are unused when RTLD_NOW is in effect should be removed from future builds 31207c478bd9Sstevel@tonic-gate * of an object. Dependencies that are unused without RTLD_NOW in effect are 31217c478bd9Sstevel@tonic-gate * candidates for lazy-loading. 31229aa23310Srie * 31237c478bd9Sstevel@tonic-gate * Unreferenced objects identify objects that are defined as dependencies but 31249aa23310Srie * are unreferenced by the caller. These unreferenced objects may however be 31259aa23310Srie * referenced by other objects within the process, and therefore don't qualify 31269aa23310Srie * as completely unused. They are still an unnecessary overhead. 31279aa23310Srie * 31289aa23310Srie * Unreferenced runpaths are also captured under ldd -U, or "unused,detail" 31299aa23310Srie * debugging. 31307c478bd9Sstevel@tonic-gate */ 31317c478bd9Sstevel@tonic-gate void 31327c478bd9Sstevel@tonic-gate unused(Lm_list *lml) 31337c478bd9Sstevel@tonic-gate { 31347c478bd9Sstevel@tonic-gate Rt_map *lmp; 31357c478bd9Sstevel@tonic-gate int nl = 0; 31369aa23310Srie Word unref, unuse; 31377c478bd9Sstevel@tonic-gate 31387c478bd9Sstevel@tonic-gate /* 31397c478bd9Sstevel@tonic-gate * If we're not tracing unused references or dependencies, or debugging 31407c478bd9Sstevel@tonic-gate * there's nothing to do. 31417c478bd9Sstevel@tonic-gate */ 31429aa23310Srie unref = lml->lm_flags & LML_FLG_TRC_UNREF; 31439aa23310Srie unuse = lml->lm_flags & LML_FLG_TRC_UNUSED; 31447c478bd9Sstevel@tonic-gate 31459aa23310Srie if ((unref == 0) && (unuse == 0) && (DBG_ENABLED == 0)) 31467c478bd9Sstevel@tonic-gate return; 31477c478bd9Sstevel@tonic-gate 31489aa23310Srie /* 31499aa23310Srie * Detect unused global search paths. 31509aa23310Srie */ 31519aa23310Srie if (rpl_libdirs) 31529aa23310Srie is_path_used(lml, unref, &nl, rpl_libdirs, config->c_name); 31539aa23310Srie if (prm_libdirs) 31549aa23310Srie is_path_used(lml, unref, &nl, prm_libdirs, config->c_name); 31559aa23310Srie 31569aa23310Srie nl = 0; 31579aa23310Srie lmp = lml->lm_head; 31589aa23310Srie if (RLIST(lmp)) 31599aa23310Srie is_path_used(lml, unref, &nl, RLIST(lmp), NAME(lmp)); 31609aa23310Srie 31617c478bd9Sstevel@tonic-gate /* 31627c478bd9Sstevel@tonic-gate * Traverse the link-maps looking for unreferenced or unused 31637c478bd9Sstevel@tonic-gate * dependencies. Ignore the first object on a link-map list, as this 31649aa23310Srie * is always used. 31657c478bd9Sstevel@tonic-gate */ 31669aa23310Srie nl = 0; 3167cb511613SAli Bahrami for (lmp = NEXT_RT_MAP(lmp); lmp; lmp = NEXT_RT_MAP(lmp)) { 31689aa23310Srie /* 31699aa23310Srie * Determine if this object contains any runpaths that have 31709aa23310Srie * not been used. 31719aa23310Srie */ 31729aa23310Srie if (RLIST(lmp)) 31739aa23310Srie is_path_used(lml, unref, &nl, RLIST(lmp), NAME(lmp)); 31749aa23310Srie 31757c478bd9Sstevel@tonic-gate /* 31767c478bd9Sstevel@tonic-gate * If tracing unreferenced objects, or under debugging, 31777c478bd9Sstevel@tonic-gate * determine whether any of this objects callers haven't 31787c478bd9Sstevel@tonic-gate * referenced it. 31797c478bd9Sstevel@tonic-gate */ 31809aa23310Srie if (unref || DBG_ENABLED) { 3181cce0e03bSab Bnd_desc *bdp; 3182cce0e03bSab Aliste idx; 31837c478bd9Sstevel@tonic-gate 3184cce0e03bSab for (APLIST_TRAVERSE(CALLERS(lmp), idx, bdp)) { 31859aa23310Srie Rt_map *clmp; 31867c478bd9Sstevel@tonic-gate 31877c478bd9Sstevel@tonic-gate if (bdp->b_flags & BND_REFER) 31887c478bd9Sstevel@tonic-gate continue; 31897c478bd9Sstevel@tonic-gate 31907c478bd9Sstevel@tonic-gate clmp = bdp->b_caller; 31917c478bd9Sstevel@tonic-gate if (FLAGS1(clmp) & FL1_RT_LDDSTUB) 31927c478bd9Sstevel@tonic-gate continue; 31937c478bd9Sstevel@tonic-gate 3194a953e2b1Srie /* BEGIN CSTYLED */ 31957c478bd9Sstevel@tonic-gate if (nl++ == 0) { 31969aa23310Srie if (unref) 31977c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_STR_NL)); 31987c478bd9Sstevel@tonic-gate else 31995aefb655Srie DBG_CALL(Dbg_util_nl(lml, 32005aefb655Srie DBG_NL_STD)); 32017c478bd9Sstevel@tonic-gate } 32027c478bd9Sstevel@tonic-gate 32039aa23310Srie if (unref) 32047c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_UNREF_FMT), 32057c478bd9Sstevel@tonic-gate NAME(lmp), NAME(clmp)); 32067c478bd9Sstevel@tonic-gate else 32075aefb655Srie DBG_CALL(Dbg_unused_unref(lmp, NAME(clmp))); 3208a953e2b1Srie /* END CSTYLED */ 32097c478bd9Sstevel@tonic-gate } 32107c478bd9Sstevel@tonic-gate } 32117c478bd9Sstevel@tonic-gate 32127c478bd9Sstevel@tonic-gate /* 32137c478bd9Sstevel@tonic-gate * If tracing unused objects simply display those objects that 32147c478bd9Sstevel@tonic-gate * haven't been referenced by anyone. 32157c478bd9Sstevel@tonic-gate */ 32167c478bd9Sstevel@tonic-gate if (FLAGS1(lmp) & FL1_RT_USED) 32177c478bd9Sstevel@tonic-gate continue; 32187c478bd9Sstevel@tonic-gate 32197c478bd9Sstevel@tonic-gate if (nl++ == 0) { 32209aa23310Srie if (unref || unuse) 32217c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_STR_NL)); 32227c478bd9Sstevel@tonic-gate else 32235aefb655Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 32247c478bd9Sstevel@tonic-gate } 32257c478bd9Sstevel@tonic-gate if (CYCGROUP(lmp)) { 32269aa23310Srie if (unref || unuse) 32277c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_UNCYC_FMT), 32287c478bd9Sstevel@tonic-gate NAME(lmp), CYCGROUP(lmp)); 32297c478bd9Sstevel@tonic-gate else 32305aefb655Srie DBG_CALL(Dbg_unused_file(lml, NAME(lmp), 0, 32317c478bd9Sstevel@tonic-gate CYCGROUP(lmp))); 32327c478bd9Sstevel@tonic-gate } else { 32339aa23310Srie if (unref || unuse) 32347c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_UNUSED_FMT), 32357c478bd9Sstevel@tonic-gate NAME(lmp)); 32367c478bd9Sstevel@tonic-gate else 32375aefb655Srie DBG_CALL(Dbg_unused_file(lml, NAME(lmp), 0, 0)); 32387c478bd9Sstevel@tonic-gate } 32397c478bd9Sstevel@tonic-gate } 32407c478bd9Sstevel@tonic-gate 32415aefb655Srie DBG_CALL(Dbg_util_nl(lml, DBG_NL_STD)); 32427c478bd9Sstevel@tonic-gate } 32437c478bd9Sstevel@tonic-gate 32447c478bd9Sstevel@tonic-gate /* 32457c478bd9Sstevel@tonic-gate * Generic cleanup routine called prior to returning control to the user. 32467c478bd9Sstevel@tonic-gate * Insures that any ld.so.1 specific file descriptors or temporary mapping are 32477c478bd9Sstevel@tonic-gate * released, and any locks dropped. 32487c478bd9Sstevel@tonic-gate */ 32497c478bd9Sstevel@tonic-gate void 32508cd45542Sraf leave(Lm_list *lml, int flags) 32517c478bd9Sstevel@tonic-gate { 325256deab07SRod Evans Lm_list *elml = lml; 325356deab07SRod Evans Rt_map *clmp; 325456deab07SRod Evans Aliste idx; 325512b8e62eSrie 32567c478bd9Sstevel@tonic-gate /* 325712b8e62eSrie * Alert the debuggers that the link-maps are consistent. Note, in the 325812b8e62eSrie * case of tearing down a whole link-map list, lml will be null. In 325912b8e62eSrie * this case use the main link-map list to test for a notification. 32607c478bd9Sstevel@tonic-gate */ 32613dbfc803SRod Evans if (elml == NULL) 326212b8e62eSrie elml = &lml_main; 326312b8e62eSrie if (elml->lm_flags & LML_FLG_DBNOTIF) 326412b8e62eSrie rd_event(elml, RD_DLACTIVITY, RT_CONSISTENT); 32657c478bd9Sstevel@tonic-gate 32667247f888Srie /* 32677247f888Srie * Alert any auditors that the link-maps are consistent. 32687247f888Srie */ 3269cce0e03bSab for (APLIST_TRAVERSE(elml->lm_actaudit, idx, clmp)) { 3270cce0e03bSab audit_activity(clmp, LA_ACT_CONSISTENT); 32717247f888Srie 3272cce0e03bSab aplist_delete(elml->lm_actaudit, &idx); 32737247f888Srie } 32747247f888Srie 32757c478bd9Sstevel@tonic-gate if (nu_fd != FD_UNAVAIL) { 32767c478bd9Sstevel@tonic-gate (void) close(nu_fd); 32777c478bd9Sstevel@tonic-gate nu_fd = FD_UNAVAIL; 32787c478bd9Sstevel@tonic-gate } 32797c478bd9Sstevel@tonic-gate 32807c478bd9Sstevel@tonic-gate /* 32817c478bd9Sstevel@tonic-gate * Reinitialize error message pointer, and any overflow indication. 32827c478bd9Sstevel@tonic-gate */ 32837c478bd9Sstevel@tonic-gate nextptr = errbuf; 328443d7826aSRod Evans prevptr = NULL; 32857c478bd9Sstevel@tonic-gate 328656deab07SRod Evans /* 328756deab07SRod Evans * Defragment any freed memory. 328856deab07SRod Evans */ 328956deab07SRod Evans if (aplist_nitems(free_alp)) 329056deab07SRod Evans defrag(); 329156deab07SRod Evans 32927c478bd9Sstevel@tonic-gate /* 32937c478bd9Sstevel@tonic-gate * Don't drop our lock if we are running on our link-map list as 32947c478bd9Sstevel@tonic-gate * there's little point in doing so since we are single-threaded. 32957c478bd9Sstevel@tonic-gate * 32967c478bd9Sstevel@tonic-gate * LML_FLG_HOLDLOCK is set for: 329743d7826aSRod Evans * - The ld.so.1's link-map list. 329843d7826aSRod Evans * - The auditor's link-map if the environment is pre-UPM. 32997c478bd9Sstevel@tonic-gate */ 33007c478bd9Sstevel@tonic-gate if (lml && (lml->lm_flags & LML_FLG_HOLDLOCK)) 33017c478bd9Sstevel@tonic-gate return; 33027c478bd9Sstevel@tonic-gate 33037c478bd9Sstevel@tonic-gate if (rt_bind_clear(0) & THR_FLG_RTLD) { 33048cd45542Sraf if (!thr_flg_nolock) 33058cd45542Sraf (void) rt_mutex_unlock(&rtldlock); 33068cd45542Sraf (void) rt_bind_clear(THR_FLG_RTLD | thr_flg_nolock | flags); 33077c478bd9Sstevel@tonic-gate } 33087c478bd9Sstevel@tonic-gate } 33097c478bd9Sstevel@tonic-gate 33107c478bd9Sstevel@tonic-gate int 331160758829Srie callable(Rt_map *clmp, Rt_map *dlmp, Grp_hdl *ghp, uint_t slflags) 33127c478bd9Sstevel@tonic-gate { 3313cce0e03bSab APlist *calp, *dalp; 3314cce0e03bSab Aliste idx1, idx2; 3315cce0e03bSab Grp_hdl *ghp1, *ghp2; 33167c478bd9Sstevel@tonic-gate 33177c478bd9Sstevel@tonic-gate /* 33187c478bd9Sstevel@tonic-gate * An object can always find symbols within itself. 33197c478bd9Sstevel@tonic-gate */ 33207c478bd9Sstevel@tonic-gate if (clmp == dlmp) 33217c478bd9Sstevel@tonic-gate return (1); 33227c478bd9Sstevel@tonic-gate 332360758829Srie /* 332460758829Srie * The search for a singleton must look in every loaded object. 332560758829Srie */ 332660758829Srie if (slflags & LKUP_SINGLETON) 332760758829Srie return (1); 332860758829Srie 33297c478bd9Sstevel@tonic-gate /* 33307c478bd9Sstevel@tonic-gate * Don't allow an object to bind to an object that is being deleted 33317c478bd9Sstevel@tonic-gate * unless the binder is also being deleted. 33327c478bd9Sstevel@tonic-gate */ 33337c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & FLG_RT_DELETE) && 33347c478bd9Sstevel@tonic-gate ((FLAGS(clmp) & FLG_RT_DELETE) == 0)) 33357c478bd9Sstevel@tonic-gate return (0); 33367c478bd9Sstevel@tonic-gate 33377c478bd9Sstevel@tonic-gate /* 33387c478bd9Sstevel@tonic-gate * An object with world access can always bind to an object with global 33397c478bd9Sstevel@tonic-gate * visibility. 33407c478bd9Sstevel@tonic-gate */ 334137ffaf83SRod Evans if (((MODE(clmp) & RTLD_WORLD) || (slflags & LKUP_WORLD)) && 334237ffaf83SRod Evans (MODE(dlmp) & RTLD_GLOBAL)) 33437c478bd9Sstevel@tonic-gate return (1); 33447c478bd9Sstevel@tonic-gate 33457c478bd9Sstevel@tonic-gate /* 33467c478bd9Sstevel@tonic-gate * An object with local access can only bind to an object that is a 33477c478bd9Sstevel@tonic-gate * member of the same group. 33487c478bd9Sstevel@tonic-gate */ 33497c478bd9Sstevel@tonic-gate if (((MODE(clmp) & RTLD_GROUP) == 0) || 3350cce0e03bSab ((calp = GROUPS(clmp)) == NULL) || ((dalp = GROUPS(dlmp)) == NULL)) 33517c478bd9Sstevel@tonic-gate return (0); 33527c478bd9Sstevel@tonic-gate 33537c478bd9Sstevel@tonic-gate /* 33547c478bd9Sstevel@tonic-gate * Traverse the list of groups the caller is a part of. 33557c478bd9Sstevel@tonic-gate */ 3356cce0e03bSab for (APLIST_TRAVERSE(calp, idx1, ghp1)) { 33577c478bd9Sstevel@tonic-gate /* 33587c478bd9Sstevel@tonic-gate * If we're testing for the ability of two objects to bind to 33597c478bd9Sstevel@tonic-gate * each other regardless of a specific group, ignore that group. 33607c478bd9Sstevel@tonic-gate */ 3361cce0e03bSab if (ghp && (ghp1 == ghp)) 33627c478bd9Sstevel@tonic-gate continue; 33637c478bd9Sstevel@tonic-gate 33647c478bd9Sstevel@tonic-gate /* 33657c478bd9Sstevel@tonic-gate * Traverse the list of groups the destination is a part of. 33667c478bd9Sstevel@tonic-gate */ 3367cce0e03bSab for (APLIST_TRAVERSE(dalp, idx2, ghp2)) { 3368efb9e8b8Srie Grp_desc *gdp; 3369cce0e03bSab Aliste idx3; 3370efb9e8b8Srie 3371cce0e03bSab if (ghp1 != ghp2) 3372efb9e8b8Srie continue; 3373efb9e8b8Srie 3374efb9e8b8Srie /* 3375efb9e8b8Srie * Make sure the relationship between the destination 3376efb9e8b8Srie * and the caller provide symbols for relocation. 3377efb9e8b8Srie * Parents are maintained as callers, but unless the 3378efb9e8b8Srie * destination object was opened with RTLD_PARENT, the 3379efb9e8b8Srie * parent doesn't provide symbols for the destination 3380efb9e8b8Srie * to relocate against. 3381efb9e8b8Srie */ 3382cce0e03bSab for (ALIST_TRAVERSE(ghp2->gh_depends, idx3, gdp)) { 3383efb9e8b8Srie if (dlmp != gdp->gd_depend) 3384efb9e8b8Srie continue; 3385efb9e8b8Srie 3386efb9e8b8Srie if (gdp->gd_flags & GPD_RELOC) 3387efb9e8b8Srie return (1); 3388efb9e8b8Srie } 33897c478bd9Sstevel@tonic-gate } 33907c478bd9Sstevel@tonic-gate } 33917c478bd9Sstevel@tonic-gate return (0); 33927c478bd9Sstevel@tonic-gate } 33937c478bd9Sstevel@tonic-gate 33947c478bd9Sstevel@tonic-gate /* 33957c478bd9Sstevel@tonic-gate * Initialize the environ symbol. Traditionally this is carried out by the crt 33967c478bd9Sstevel@tonic-gate * code prior to jumping to main. However, init sections get fired before this 33977c478bd9Sstevel@tonic-gate * variable is initialized, so ld.so.1 sets this directly from the AUX vector 33987c478bd9Sstevel@tonic-gate * information. In addition, a process may have multiple link-maps (ld.so.1's 33997c478bd9Sstevel@tonic-gate * debugging and preloading objects), and link auditing, and each may need an 34007c478bd9Sstevel@tonic-gate * environ variable set. 34017c478bd9Sstevel@tonic-gate * 34027c478bd9Sstevel@tonic-gate * This routine is called after a relocation() pass, and thus provides for: 34037c478bd9Sstevel@tonic-gate * 340443d7826aSRod Evans * - setting environ on the main link-map after the initial application and 34057c478bd9Sstevel@tonic-gate * its dependencies have been established. Typically environ lives in the 34067c478bd9Sstevel@tonic-gate * application (provided by its crt), but in older applications it might 34077c478bd9Sstevel@tonic-gate * be in libc. Who knows what's expected of applications not built on 34087c478bd9Sstevel@tonic-gate * Solaris. 34097c478bd9Sstevel@tonic-gate * 341043d7826aSRod Evans * - after loading a new shared object. We can add shared objects to various 34117c478bd9Sstevel@tonic-gate * link-maps, and any link-map dependencies requiring getopt() require 34127c478bd9Sstevel@tonic-gate * their own environ. In addition, lazy loading might bring in the 341341072f3cSrie * supplier of environ (libc used to be a lazy loading candidate) after 341441072f3cSrie * the link-map has been established and other objects are present. 34157c478bd9Sstevel@tonic-gate * 34167c478bd9Sstevel@tonic-gate * This routine handles all these scenarios, without adding unnecessary overhead 34177c478bd9Sstevel@tonic-gate * to ld.so.1. 34187c478bd9Sstevel@tonic-gate */ 34197c478bd9Sstevel@tonic-gate void 34207c478bd9Sstevel@tonic-gate set_environ(Lm_list *lml) 34217c478bd9Sstevel@tonic-gate { 342275e7992aSrie Rt_map *dlmp; 342375e7992aSrie Sym *sym; 34247c478bd9Sstevel@tonic-gate Slookup sl; 34257c478bd9Sstevel@tonic-gate uint_t binfo; 34267c478bd9Sstevel@tonic-gate 342775e7992aSrie /* 342875e7992aSrie * Initialize the symbol lookup data structure. 342975e7992aSrie */ 343075e7992aSrie SLOOKUP_INIT(sl, MSG_ORIG(MSG_SYM_ENVIRON), lml->lm_head, lml->lm_head, 343175e7992aSrie ld_entry_cnt, 0, 0, 0, 0, LKUP_WEAK); 34327c478bd9Sstevel@tonic-gate 34339aa23310Srie if (sym = LM_LOOKUP_SYM(lml->lm_head)(&sl, &dlmp, &binfo, 0)) { 343441072f3cSrie lml->lm_environ = (char ***)sym->st_value; 34357c478bd9Sstevel@tonic-gate 34367c478bd9Sstevel@tonic-gate if (!(FLAGS(dlmp) & FLG_RT_FIXED)) 343741072f3cSrie lml->lm_environ = 343841072f3cSrie (char ***)((uintptr_t)lml->lm_environ + 343941072f3cSrie (uintptr_t)ADDR(dlmp)); 344041072f3cSrie *(lml->lm_environ) = (char **)environ; 34417c478bd9Sstevel@tonic-gate lml->lm_flags |= LML_FLG_ENVIRON; 34427c478bd9Sstevel@tonic-gate } 34437c478bd9Sstevel@tonic-gate } 34447c478bd9Sstevel@tonic-gate 34457c478bd9Sstevel@tonic-gate /* 34467c478bd9Sstevel@tonic-gate * Determine whether we have a secure executable. Uid and gid information 34477c478bd9Sstevel@tonic-gate * can be passed to us via the aux vector, however if these values are -1 34487c478bd9Sstevel@tonic-gate * then use the appropriate system call to obtain them. 34497c478bd9Sstevel@tonic-gate * 345043d7826aSRod Evans * - If the user is the root they can do anything 34517c478bd9Sstevel@tonic-gate * 345243d7826aSRod Evans * - If the real and effective uid's don't match, or the real and 34537c478bd9Sstevel@tonic-gate * effective gid's don't match then this is determined to be a `secure' 34547c478bd9Sstevel@tonic-gate * application. 34557c478bd9Sstevel@tonic-gate * 34567c478bd9Sstevel@tonic-gate * This function is called prior to any dependency processing (see _setup.c). 34577c478bd9Sstevel@tonic-gate * Any secure setting will remain in effect for the life of the process. 34587c478bd9Sstevel@tonic-gate */ 34597c478bd9Sstevel@tonic-gate void 34607c478bd9Sstevel@tonic-gate security(uid_t uid, uid_t euid, gid_t gid, gid_t egid, int auxflags) 34617c478bd9Sstevel@tonic-gate { 34627c478bd9Sstevel@tonic-gate if (auxflags != -1) { 34637c478bd9Sstevel@tonic-gate if ((auxflags & AF_SUN_SETUGID) != 0) 34647c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_SECURE; 34657c478bd9Sstevel@tonic-gate return; 34667c478bd9Sstevel@tonic-gate } 346756deab07SRod Evans 3468a953e2b1Srie if (uid == (uid_t)-1) 34697c478bd9Sstevel@tonic-gate uid = getuid(); 34707c478bd9Sstevel@tonic-gate if (uid) { 3471a953e2b1Srie if (euid == (uid_t)-1) 34727c478bd9Sstevel@tonic-gate euid = geteuid(); 34737c478bd9Sstevel@tonic-gate if (uid != euid) 34747c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_SECURE; 34757c478bd9Sstevel@tonic-gate else { 3476a953e2b1Srie if (gid == (gid_t)-1) 34777c478bd9Sstevel@tonic-gate gid = getgid(); 3478a953e2b1Srie if (egid == (gid_t)-1) 34797c478bd9Sstevel@tonic-gate egid = getegid(); 34807c478bd9Sstevel@tonic-gate if (gid != egid) 34817c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_SECURE; 34827c478bd9Sstevel@tonic-gate } 34837c478bd9Sstevel@tonic-gate } 34847c478bd9Sstevel@tonic-gate } 34857c478bd9Sstevel@tonic-gate 34863dbfc803SRod Evans /* 34873dbfc803SRod Evans * Determine whether ld.so.1 itself is owned by root and has its mode setuid. 34883dbfc803SRod Evans */ 34893dbfc803SRod Evans int 34903dbfc803SRod Evans is_rtld_setuid() 34913dbfc803SRod Evans { 3492cb511613SAli Bahrami rtld_stat_t status; 34933dbfc803SRod Evans 34943dbfc803SRod Evans if ((rtld_flags2 & RT_FL2_SETUID) || 3495cb511613SAli Bahrami ((rtld_stat(NAME(lml_rtld.lm_head), &status) == 0) && 34963dbfc803SRod Evans (status.st_uid == 0) && (status.st_mode & S_ISUID))) { 34973dbfc803SRod Evans rtld_flags2 |= RT_FL2_SETUID; 34983dbfc803SRod Evans return (1); 34993dbfc803SRod Evans } 35003dbfc803SRod Evans return (0); 35013dbfc803SRod Evans } 35023dbfc803SRod Evans 35037c478bd9Sstevel@tonic-gate /* 35047c478bd9Sstevel@tonic-gate * _REENTRANT code gets errno redefined to a function so provide for return 35057c478bd9Sstevel@tonic-gate * of the thread errno if applicable. This has no meaning in ld.so.1 which 35067c478bd9Sstevel@tonic-gate * is basically singled threaded. Provide the interface for our dependencies. 35077c478bd9Sstevel@tonic-gate */ 35087c478bd9Sstevel@tonic-gate #undef errno 35097c478bd9Sstevel@tonic-gate int * 35107c478bd9Sstevel@tonic-gate ___errno() 35117c478bd9Sstevel@tonic-gate { 35127c478bd9Sstevel@tonic-gate extern int errno; 35137c478bd9Sstevel@tonic-gate 35147c478bd9Sstevel@tonic-gate return (&errno); 35157c478bd9Sstevel@tonic-gate } 35167c478bd9Sstevel@tonic-gate 35177c478bd9Sstevel@tonic-gate /* 35187c478bd9Sstevel@tonic-gate * Determine whether a symbol name should be demangled. 35197c478bd9Sstevel@tonic-gate */ 35207c478bd9Sstevel@tonic-gate const char * 35217c478bd9Sstevel@tonic-gate demangle(const char *name) 35227c478bd9Sstevel@tonic-gate { 35237c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DEMANGLE) 35245aefb655Srie return (conv_demangle_name(name)); 35257c478bd9Sstevel@tonic-gate else 35267c478bd9Sstevel@tonic-gate return (name); 35277c478bd9Sstevel@tonic-gate } 3528cb511613SAli Bahrami 3529cb511613SAli Bahrami #ifndef _LP64 3530cb511613SAli Bahrami /* 3531cb511613SAli Bahrami * Wrappers on stat() and fstat() for 32-bit rtld that uses stat64() 3532cb511613SAli Bahrami * underneath while preserving the object size limits of a non-largefile 3533cb511613SAli Bahrami * enabled 32-bit process. The purpose of this is to prevent large inode 3534cb511613SAli Bahrami * values from causing stat() to fail. 3535cb511613SAli Bahrami */ 3536cb511613SAli Bahrami inline static int 3537cb511613SAli Bahrami rtld_stat_process(int r, struct stat64 *lbuf, rtld_stat_t *restrict buf) 3538cb511613SAli Bahrami { 3539cb511613SAli Bahrami extern int errno; 3540cb511613SAli Bahrami 3541cb511613SAli Bahrami /* 3542cb511613SAli Bahrami * Although we used a 64-bit capable stat(), the 32-bit rtld 3543cb511613SAli Bahrami * can only handle objects < 2GB in size. If this object is 3544cb511613SAli Bahrami * too big, turn the success into an overflow error. 3545cb511613SAli Bahrami */ 3546cb511613SAli Bahrami if ((lbuf->st_size & 0xffffffff80000000) != 0) { 3547cb511613SAli Bahrami errno = EOVERFLOW; 3548cb511613SAli Bahrami return (-1); 3549cb511613SAli Bahrami } 3550cb511613SAli Bahrami 3551cb511613SAli Bahrami /* 3552cb511613SAli Bahrami * Transfer the information needed by rtld into a rtld_stat_t 3553cb511613SAli Bahrami * structure that preserves the non-largile types for everything 3554cb511613SAli Bahrami * except inode. 3555cb511613SAli Bahrami */ 3556cb511613SAli Bahrami buf->st_dev = lbuf->st_dev; 3557cb511613SAli Bahrami buf->st_ino = lbuf->st_ino; 3558cb511613SAli Bahrami buf->st_mode = lbuf->st_mode; 3559cb511613SAli Bahrami buf->st_uid = lbuf->st_uid; 3560cb511613SAli Bahrami buf->st_size = (off_t)lbuf->st_size; 3561cb511613SAli Bahrami buf->st_mtim = lbuf->st_mtim; 3562cb511613SAli Bahrami #ifdef sparc 3563cb511613SAli Bahrami buf->st_blksize = lbuf->st_blksize; 3564cb511613SAli Bahrami #endif 3565cb511613SAli Bahrami 3566cb511613SAli Bahrami return (r); 3567cb511613SAli Bahrami } 3568cb511613SAli Bahrami 3569cb511613SAli Bahrami int 3570cb511613SAli Bahrami rtld_stat(const char *restrict path, rtld_stat_t *restrict buf) 3571cb511613SAli Bahrami { 3572cb511613SAli Bahrami struct stat64 lbuf; 3573cb511613SAli Bahrami int r; 3574cb511613SAli Bahrami 3575cb511613SAli Bahrami r = stat64(path, &lbuf); 3576cb511613SAli Bahrami if (r != -1) 3577cb511613SAli Bahrami r = rtld_stat_process(r, &lbuf, buf); 3578cb511613SAli Bahrami return (r); 3579cb511613SAli Bahrami } 3580cb511613SAli Bahrami 3581cb511613SAli Bahrami int 3582cb511613SAli Bahrami rtld_fstat(int fildes, rtld_stat_t *restrict buf) 3583cb511613SAli Bahrami { 3584cb511613SAli Bahrami struct stat64 lbuf; 3585cb511613SAli Bahrami int r; 3586cb511613SAli Bahrami 3587cb511613SAli Bahrami r = fstat64(fildes, &lbuf); 3588cb511613SAli Bahrami if (r != -1) 3589cb511613SAli Bahrami r = rtld_stat_process(r, &lbuf, buf); 3590cb511613SAli Bahrami return (r); 3591cb511613SAli Bahrami } 3592cb511613SAli Bahrami #endif 3593