17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 77c478bd9Sstevel@tonic-gate * with the License. 87c478bd9Sstevel@tonic-gate * 97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 127c478bd9Sstevel@tonic-gate * and limitations under the License. 137c478bd9Sstevel@tonic-gate * 147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 197c478bd9Sstevel@tonic-gate * 207c478bd9Sstevel@tonic-gate * CDDL HEADER END 217c478bd9Sstevel@tonic-gate */ 22*fb1354edSrie 237c478bd9Sstevel@tonic-gate /* 247c478bd9Sstevel@tonic-gate * Copyright (c) 1988 AT&T 257c478bd9Sstevel@tonic-gate * All Rights Reserved 267c478bd9Sstevel@tonic-gate * 277c478bd9Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 287c478bd9Sstevel@tonic-gate * Use is subject to license terms. 297c478bd9Sstevel@tonic-gate */ 307c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 317c478bd9Sstevel@tonic-gate 327c478bd9Sstevel@tonic-gate /* 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 "_synonyms.h" 377c478bd9Sstevel@tonic-gate #include <stdio.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 <ctype.h> 467c478bd9Sstevel@tonic-gate #include <dlfcn.h> 477c478bd9Sstevel@tonic-gate #include <unistd.h> 487c478bd9Sstevel@tonic-gate #include <stdlib.h> 497c478bd9Sstevel@tonic-gate #include <signal.h> 507c478bd9Sstevel@tonic-gate #include <sys/auxv.h> 517c478bd9Sstevel@tonic-gate #include "_rtld.h" 527c478bd9Sstevel@tonic-gate #include "_audit.h" 537c478bd9Sstevel@tonic-gate #include "conv.h" 547c478bd9Sstevel@tonic-gate #include "msg.h" 557c478bd9Sstevel@tonic-gate #include "debug.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 * All error messages go through eprintf(). During process initialization these 617c478bd9Sstevel@tonic-gate * messages should be directed to the standard error, however once control has 627c478bd9Sstevel@tonic-gate * been passed to the applications code these messages should be stored in an 637c478bd9Sstevel@tonic-gate * internal buffer for use with dlerror(). Note, fatal error conditions that 647c478bd9Sstevel@tonic-gate * may occur while running the application will still cause a standard error 657c478bd9Sstevel@tonic-gate * message, see rtldexit() in this file for details. 667c478bd9Sstevel@tonic-gate * The `application' flag serves to indicate the transition between process 677c478bd9Sstevel@tonic-gate * initialization and when the applications code is running. 687c478bd9Sstevel@tonic-gate */ 697c478bd9Sstevel@tonic-gate 707c478bd9Sstevel@tonic-gate /* 717c478bd9Sstevel@tonic-gate * Null function used as place where a debugger can set a breakpoint. 727c478bd9Sstevel@tonic-gate */ 737c478bd9Sstevel@tonic-gate void 747c478bd9Sstevel@tonic-gate rtld_db_dlactivity(void) 757c478bd9Sstevel@tonic-gate { 767c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_dbnotify(r_debug.rtd_rdebug.r_rdevent, 777c478bd9Sstevel@tonic-gate 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 pre .init 827c478bd9Sstevel@tonic-gate * processing breakpoint. 837c478bd9Sstevel@tonic-gate */ 847c478bd9Sstevel@tonic-gate void 857c478bd9Sstevel@tonic-gate rtld_db_preinit(void) 867c478bd9Sstevel@tonic-gate { 877c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_dbnotify(r_debug.rtd_rdebug.r_rdevent, 887c478bd9Sstevel@tonic-gate r_debug.rtd_rdebug.r_state)); 897c478bd9Sstevel@tonic-gate } 907c478bd9Sstevel@tonic-gate 917c478bd9Sstevel@tonic-gate 927c478bd9Sstevel@tonic-gate /* 937c478bd9Sstevel@tonic-gate * Null function used as place where debugger can set a post .init 947c478bd9Sstevel@tonic-gate * processing breakpoint. 957c478bd9Sstevel@tonic-gate */ 967c478bd9Sstevel@tonic-gate void 977c478bd9Sstevel@tonic-gate rtld_db_postinit(void) 987c478bd9Sstevel@tonic-gate { 997c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_dbnotify(r_debug.rtd_rdebug.r_rdevent, 1007c478bd9Sstevel@tonic-gate r_debug.rtd_rdebug.r_state)); 1017c478bd9Sstevel@tonic-gate } 1027c478bd9Sstevel@tonic-gate 1037c478bd9Sstevel@tonic-gate 1047c478bd9Sstevel@tonic-gate /* 1057c478bd9Sstevel@tonic-gate * Debugger Event Notification 1067c478bd9Sstevel@tonic-gate * 1077c478bd9Sstevel@tonic-gate * This function centralizes all debugger event notification (ala rtld_db). 1087c478bd9Sstevel@tonic-gate * 1097c478bd9Sstevel@tonic-gate * There's a simple intent, focused on insuring the primary link-map control 1107c478bd9Sstevel@tonic-gate * list (or each link-map list) is consistent, and the indication that objects 1117c478bd9Sstevel@tonic-gate * have been added or deleted from this list. Although an RD_ADD and RD_DELETE 1127c478bd9Sstevel@tonic-gate * event are posted for each of these, most debuggers don't care, as their 1137c478bd9Sstevel@tonic-gate * view is that these events simply convey an "inconsistent" state. 1147c478bd9Sstevel@tonic-gate * 1157c478bd9Sstevel@tonic-gate * We also don't want to trigger multiple RD_ADD/RD_DELETE events any time we 1167c478bd9Sstevel@tonic-gate * enter ld.so.1. 1177c478bd9Sstevel@tonic-gate * 1187c478bd9Sstevel@tonic-gate * With auditors, we may be in the process of relocating a collection of 1197c478bd9Sstevel@tonic-gate * objects, and will leave() ld.so.1 to call the auditor. At this point we 1207c478bd9Sstevel@tonic-gate * must indicate an RD_CONSISTENT event, but librtld_db will not report an 1217c478bd9Sstevel@tonic-gate * object to the debuggers until relocation processing has been completed on it. 1227c478bd9Sstevel@tonic-gate * To allow for the collection of these objects that are pending relocation, an 1237c478bd9Sstevel@tonic-gate * RD_ADD event is set after completing a series of relocations on the primary 1247c478bd9Sstevel@tonic-gate * link-map control list. 1257c478bd9Sstevel@tonic-gate * 1267c478bd9Sstevel@tonic-gate * Set an RD_ADD/RD_DELETE event and indicate that an RD_CONSISTENT event is 1277c478bd9Sstevel@tonic-gate * required later (LML_FLG_DBNOTIF): 1287c478bd9Sstevel@tonic-gate * 1297c478bd9Sstevel@tonic-gate * i the first time we add or delete an object to the primary link-map 1307c478bd9Sstevel@tonic-gate * control list. 1317c478bd9Sstevel@tonic-gate * ii the first time we move a secondary link-map control list to the primary 1327c478bd9Sstevel@tonic-gate * link-map control list (effectively, this is like adding a group of 1337c478bd9Sstevel@tonic-gate * objects to the primary link-map control list). 1347c478bd9Sstevel@tonic-gate * iii the first time we relocate a series of objects on the primary link-map 1357c478bd9Sstevel@tonic-gate * control list. 1367c478bd9Sstevel@tonic-gate * 1377c478bd9Sstevel@tonic-gate * Set an RD_CONSISTENT event when it is required (LML_FLG_DBNOTIF is set) and 1387c478bd9Sstevel@tonic-gate * 1397c478bd9Sstevel@tonic-gate * i each time we leave the runtime linker. 1407c478bd9Sstevel@tonic-gate */ 1417c478bd9Sstevel@tonic-gate void 1427c478bd9Sstevel@tonic-gate rd_event(Lm_list *lml, rd_event_e event, r_state_e state) 1437c478bd9Sstevel@tonic-gate { 1447c478bd9Sstevel@tonic-gate void (*fptr)(); 1457c478bd9Sstevel@tonic-gate 1467c478bd9Sstevel@tonic-gate switch (event) { 1477c478bd9Sstevel@tonic-gate case RD_PREINIT: 1487c478bd9Sstevel@tonic-gate fptr = rtld_db_preinit; 1497c478bd9Sstevel@tonic-gate break; 1507c478bd9Sstevel@tonic-gate case RD_POSTINIT: 1517c478bd9Sstevel@tonic-gate fptr = rtld_db_postinit; 1527c478bd9Sstevel@tonic-gate break; 1537c478bd9Sstevel@tonic-gate case RD_DLACTIVITY: 1547c478bd9Sstevel@tonic-gate switch (state) { 1557c478bd9Sstevel@tonic-gate case RT_CONSISTENT: 1567c478bd9Sstevel@tonic-gate lml->lm_flags &= ~LML_FLG_DBNOTIF; 1577c478bd9Sstevel@tonic-gate 1587c478bd9Sstevel@tonic-gate /* 1597c478bd9Sstevel@tonic-gate * Do we need to send a notification? 1607c478bd9Sstevel@tonic-gate */ 1617c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_DBNOTIF) == 0) 1627c478bd9Sstevel@tonic-gate return; 1637c478bd9Sstevel@tonic-gate rtld_flags &= ~RT_FL_DBNOTIF; 1647c478bd9Sstevel@tonic-gate break; 1657c478bd9Sstevel@tonic-gate case RT_ADD: 1667c478bd9Sstevel@tonic-gate case RT_DELETE: 1677c478bd9Sstevel@tonic-gate lml->lm_flags |= LML_FLG_DBNOTIF; 1687c478bd9Sstevel@tonic-gate 1697c478bd9Sstevel@tonic-gate /* 1707c478bd9Sstevel@tonic-gate * If we are already in an inconsistent state, no 1717c478bd9Sstevel@tonic-gate * notification is required. 1727c478bd9Sstevel@tonic-gate */ 1737c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DBNOTIF) 1747c478bd9Sstevel@tonic-gate return; 1757c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_DBNOTIF; 1767c478bd9Sstevel@tonic-gate break; 1777c478bd9Sstevel@tonic-gate }; 1787c478bd9Sstevel@tonic-gate fptr = rtld_db_dlactivity; 1797c478bd9Sstevel@tonic-gate break; 1807c478bd9Sstevel@tonic-gate default: 1817c478bd9Sstevel@tonic-gate /* 1827c478bd9Sstevel@tonic-gate * RD_NONE - do nothing 1837c478bd9Sstevel@tonic-gate */ 1847c478bd9Sstevel@tonic-gate break; 1857c478bd9Sstevel@tonic-gate }; 1867c478bd9Sstevel@tonic-gate 1877c478bd9Sstevel@tonic-gate /* 1887c478bd9Sstevel@tonic-gate * Set event state and call 'notification' function. 1897c478bd9Sstevel@tonic-gate * 1907c478bd9Sstevel@tonic-gate * The debugging clients have previously been told about these 1917c478bd9Sstevel@tonic-gate * notification functions and have set breakpoints on them if they 1927c478bd9Sstevel@tonic-gate * are interested in the notification. 1937c478bd9Sstevel@tonic-gate */ 1947c478bd9Sstevel@tonic-gate r_debug.rtd_rdebug.r_state = state; 1957c478bd9Sstevel@tonic-gate r_debug.rtd_rdebug.r_rdevent = event; 1967c478bd9Sstevel@tonic-gate fptr(); 1977c478bd9Sstevel@tonic-gate r_debug.rtd_rdebug.r_rdevent = RD_NONE; 1987c478bd9Sstevel@tonic-gate } 1997c478bd9Sstevel@tonic-gate 2007c478bd9Sstevel@tonic-gate #if defined(sparc) || defined(i386) || defined(__amd64) 2017c478bd9Sstevel@tonic-gate /* 2027c478bd9Sstevel@tonic-gate * Stack Cleanup. 2037c478bd9Sstevel@tonic-gate * 2047c478bd9Sstevel@tonic-gate * This function is invoked to 'remove' arguments that were passed in on the 2057c478bd9Sstevel@tonic-gate * stack. This is most likely if ld.so.1 was invoked directly. In that case 2067c478bd9Sstevel@tonic-gate * we want to remove ld.so.1 as well as it's arguments from the argv[] array. 2077c478bd9Sstevel@tonic-gate * Which means we then need to slide everything above it on the stack down 2087c478bd9Sstevel@tonic-gate * accordingly. 2097c478bd9Sstevel@tonic-gate * 2107c478bd9Sstevel@tonic-gate * While the stack layout is platform specific - it just so happens that x86, 21141072f3cSrie * sparc, sparcv9, and amd64 all share the following initial stack layout. 2127c478bd9Sstevel@tonic-gate * 2137c478bd9Sstevel@tonic-gate * !_______________________! high addresses 2147c478bd9Sstevel@tonic-gate * ! ! 2157c478bd9Sstevel@tonic-gate * ! Information ! 2167c478bd9Sstevel@tonic-gate * ! Block ! 2177c478bd9Sstevel@tonic-gate * ! (size varies) ! 2187c478bd9Sstevel@tonic-gate * !_______________________! 2197c478bd9Sstevel@tonic-gate * ! 0 word ! 2207c478bd9Sstevel@tonic-gate * !_______________________! 2217c478bd9Sstevel@tonic-gate * ! Auxiliary ! 2227c478bd9Sstevel@tonic-gate * ! vector ! 2237c478bd9Sstevel@tonic-gate * ! 2 word entries ! 2247c478bd9Sstevel@tonic-gate * ! ! 2257c478bd9Sstevel@tonic-gate * !_______________________! 2267c478bd9Sstevel@tonic-gate * ! 0 word ! 2277c478bd9Sstevel@tonic-gate * !_______________________! 2287c478bd9Sstevel@tonic-gate * ! Environment ! 2297c478bd9Sstevel@tonic-gate * ! pointers ! 2307c478bd9Sstevel@tonic-gate * ! ... ! 2317c478bd9Sstevel@tonic-gate * ! (one word each) ! 2327c478bd9Sstevel@tonic-gate * !_______________________! 2337c478bd9Sstevel@tonic-gate * ! 0 word ! 2347c478bd9Sstevel@tonic-gate * !_______________________! 2357c478bd9Sstevel@tonic-gate * ! Argument ! low addresses 2367c478bd9Sstevel@tonic-gate * ! pointers ! 2377c478bd9Sstevel@tonic-gate * ! Argc words ! 2387c478bd9Sstevel@tonic-gate * !_______________________! 2397c478bd9Sstevel@tonic-gate * ! ! 2407c478bd9Sstevel@tonic-gate * ! Argc ! 2417c478bd9Sstevel@tonic-gate * !_______________________! 2427c478bd9Sstevel@tonic-gate * ! ... ! 2437c478bd9Sstevel@tonic-gate * 2447c478bd9Sstevel@tonic-gate */ 2457c478bd9Sstevel@tonic-gate static void 24641072f3cSrie stack_cleanup(char **argv, char ***envp, auxv_t **auxv, int rmcnt) 2477c478bd9Sstevel@tonic-gate { 24841072f3cSrie int ndx; 2497c478bd9Sstevel@tonic-gate long *argc; 25041072f3cSrie char **oargv, **nargv; 25141072f3cSrie char **oenvp, **nenvp; 25241072f3cSrie auxv_t *oauxv, *nauxv; 2537c478bd9Sstevel@tonic-gate 2547c478bd9Sstevel@tonic-gate /* 25541072f3cSrie * Slide ARGV[] and update argc. The argv pointer remains the same, 25641072f3cSrie * however slide the applications arguments over the arguments to 25741072f3cSrie * ld.so.1. 2587c478bd9Sstevel@tonic-gate */ 25941072f3cSrie nargv = &argv[0]; 26041072f3cSrie oargv = &argv[rmcnt]; 26141072f3cSrie 26241072f3cSrie for (ndx = 0; oargv[ndx]; ndx++) 26341072f3cSrie nargv[ndx] = oargv[ndx]; 26441072f3cSrie nargv[ndx] = oargv[ndx]; 26541072f3cSrie 26641072f3cSrie argc = (long *)((uintptr_t)argv - sizeof (long *)); 2677c478bd9Sstevel@tonic-gate *argc -= rmcnt; 2687c478bd9Sstevel@tonic-gate 2697c478bd9Sstevel@tonic-gate /* 27041072f3cSrie * Slide ENVP[], and update the environment array pointer. 2717c478bd9Sstevel@tonic-gate */ 27241072f3cSrie ndx++; 27341072f3cSrie nenvp = &nargv[ndx]; 27441072f3cSrie oenvp = &oargv[ndx]; 27541072f3cSrie *envp = nenvp; 27641072f3cSrie 27741072f3cSrie for (ndx = 0; oenvp[ndx]; ndx++) 27841072f3cSrie nenvp[ndx] = oenvp[ndx]; 27941072f3cSrie nenvp[ndx] = oenvp[ndx]; 2807c478bd9Sstevel@tonic-gate 2817c478bd9Sstevel@tonic-gate /* 28241072f3cSrie * Slide AUXV[], and update the aux vector pointer. 2837c478bd9Sstevel@tonic-gate */ 28441072f3cSrie ndx++; 28541072f3cSrie nauxv = (auxv_t *)&nenvp[ndx]; 28641072f3cSrie oauxv = (auxv_t *)&oenvp[ndx]; 28741072f3cSrie *auxv = nauxv; 28841072f3cSrie 28941072f3cSrie for (ndx = 0; (oauxv[ndx].a_type != AT_NULL); ndx++) 29041072f3cSrie nauxv[ndx] = oauxv[ndx]; 29141072f3cSrie nauxv[ndx] = oauxv[ndx]; 2927c478bd9Sstevel@tonic-gate } 2937c478bd9Sstevel@tonic-gate #else 2947c478bd9Sstevel@tonic-gate /* 2957c478bd9Sstevel@tonic-gate * Verify that the above routine is appropriate for any new platforms. 2967c478bd9Sstevel@tonic-gate */ 2977c478bd9Sstevel@tonic-gate #error unsupported architecture! 2987c478bd9Sstevel@tonic-gate #endif 2997c478bd9Sstevel@tonic-gate 3007c478bd9Sstevel@tonic-gate /* 30141072f3cSrie * The only command line argument recognized is -e, followed by a runtime 30241072f3cSrie * linker environment variable. 3037c478bd9Sstevel@tonic-gate */ 3047c478bd9Sstevel@tonic-gate int 30541072f3cSrie rtld_getopt(char **argv, char ***envp, auxv_t **auxv, Word *lmflags, 30641072f3cSrie Word *lmtflags, int aout) 3077c478bd9Sstevel@tonic-gate { 30841072f3cSrie int ndx; 3097c478bd9Sstevel@tonic-gate 31041072f3cSrie for (ndx = 1; argv[ndx]; ndx++) { 3117c478bd9Sstevel@tonic-gate char *str; 3127c478bd9Sstevel@tonic-gate 31341072f3cSrie if (argv[ndx][0] != '-') 3147c478bd9Sstevel@tonic-gate break; 3157c478bd9Sstevel@tonic-gate 31641072f3cSrie if (argv[ndx][1] == '\0') { 31741072f3cSrie ndx++; 3187c478bd9Sstevel@tonic-gate break; 3197c478bd9Sstevel@tonic-gate } 3207c478bd9Sstevel@tonic-gate 32141072f3cSrie if (argv[ndx][1] != 'e') 32241072f3cSrie return (1); 3237c478bd9Sstevel@tonic-gate 32441072f3cSrie if (argv[ndx][2] == '\0') { 32541072f3cSrie ndx++; 32641072f3cSrie if (argv[ndx] == NULL) 32741072f3cSrie return (1); 32841072f3cSrie str = argv[ndx]; 3297c478bd9Sstevel@tonic-gate } else 33041072f3cSrie str = &argv[ndx][2]; 3317c478bd9Sstevel@tonic-gate 33241072f3cSrie /* 33341072f3cSrie * If the environment variable starts with LD_, strip the LD_. 33441072f3cSrie * Otherwise, take things as is. 33541072f3cSrie */ 33641072f3cSrie if ((str[0] == 'L') && (str[1] == 'D') && (str[2] == '_') && 33741072f3cSrie (str[3] != '\0')) 33841072f3cSrie str += 3; 3397c478bd9Sstevel@tonic-gate if (ld_flags_env(str, lmflags, lmtflags, 0, aout) == 1) 3407c478bd9Sstevel@tonic-gate return (1); 3417c478bd9Sstevel@tonic-gate } 3427c478bd9Sstevel@tonic-gate 34341072f3cSrie /* 34441072f3cSrie * Make sure an object file has been specified. 34541072f3cSrie */ 34641072f3cSrie if (argv[ndx] == 0) 3477c478bd9Sstevel@tonic-gate return (1); 3487c478bd9Sstevel@tonic-gate 3497c478bd9Sstevel@tonic-gate /* 3507c478bd9Sstevel@tonic-gate * Having gotten the arguments, clean ourselves off of the stack. 3517c478bd9Sstevel@tonic-gate */ 35241072f3cSrie stack_cleanup(argv, envp, auxv, ndx); 3537c478bd9Sstevel@tonic-gate return (0); 3547c478bd9Sstevel@tonic-gate } 3557c478bd9Sstevel@tonic-gate 3567c478bd9Sstevel@tonic-gate /* 3577c478bd9Sstevel@tonic-gate * Compare function for FullpathNode AVL tree. 3587c478bd9Sstevel@tonic-gate */ 3597c478bd9Sstevel@tonic-gate static int 3607c478bd9Sstevel@tonic-gate fpavl_compare(const void * n1, const void * n2) 3617c478bd9Sstevel@tonic-gate { 3627c478bd9Sstevel@tonic-gate uint_t hash1, hash2; 3637c478bd9Sstevel@tonic-gate const char *st1, *st2; 3647c478bd9Sstevel@tonic-gate int rc; 3657c478bd9Sstevel@tonic-gate 3667c478bd9Sstevel@tonic-gate hash1 = ((FullpathNode *)n1)->fpn_hash; 3677c478bd9Sstevel@tonic-gate hash2 = ((FullpathNode *)n2)->fpn_hash; 3687c478bd9Sstevel@tonic-gate 3697c478bd9Sstevel@tonic-gate if (hash1 > hash2) 3707c478bd9Sstevel@tonic-gate return (1); 3717c478bd9Sstevel@tonic-gate if (hash1 < hash2) 3727c478bd9Sstevel@tonic-gate return (-1); 3737c478bd9Sstevel@tonic-gate 3747c478bd9Sstevel@tonic-gate st1 = ((FullpathNode *)n1)->fpn_name; 3757c478bd9Sstevel@tonic-gate st2 = ((FullpathNode *)n2)->fpn_name; 3767c478bd9Sstevel@tonic-gate 3777c478bd9Sstevel@tonic-gate rc = strcmp(st1, st2); 3787c478bd9Sstevel@tonic-gate if (rc > 0) 3797c478bd9Sstevel@tonic-gate return (1); 3807c478bd9Sstevel@tonic-gate if (rc < 0) 3817c478bd9Sstevel@tonic-gate return (-1); 3827c478bd9Sstevel@tonic-gate return (0); 3837c478bd9Sstevel@tonic-gate } 3847c478bd9Sstevel@tonic-gate 3857c478bd9Sstevel@tonic-gate 3867c478bd9Sstevel@tonic-gate /* 38724a6229eSrie * Determine if a given pathname has already been loaded in the AVL tree. 3887c478bd9Sstevel@tonic-gate * If the pathname does not exist in the AVL tree, the next insertion point 3897c478bd9Sstevel@tonic-gate * is deposited in "where". This value can be used by fpavl_insert() to 3907c478bd9Sstevel@tonic-gate * expedite the insertion. 3917c478bd9Sstevel@tonic-gate */ 3927c478bd9Sstevel@tonic-gate Rt_map * 3937c478bd9Sstevel@tonic-gate fpavl_loaded(Lm_list *lml, const char *name, avl_index_t *where) 3947c478bd9Sstevel@tonic-gate { 3957c478bd9Sstevel@tonic-gate FullpathNode fpn, *fpnp; 3967c478bd9Sstevel@tonic-gate avl_tree_t *avlt; 3977c478bd9Sstevel@tonic-gate 3987c478bd9Sstevel@tonic-gate /* 3997c478bd9Sstevel@tonic-gate * Create the avl tree if required. 4007c478bd9Sstevel@tonic-gate */ 4017c478bd9Sstevel@tonic-gate if ((avlt = lml->lm_fpavl) == NULL) { 4027c478bd9Sstevel@tonic-gate if ((avlt = calloc(sizeof (avl_tree_t), 1)) == 0) 4037c478bd9Sstevel@tonic-gate return (0); 4047c478bd9Sstevel@tonic-gate avl_create(avlt, fpavl_compare, sizeof (FullpathNode), 4057c478bd9Sstevel@tonic-gate SGSOFFSETOF(FullpathNode, fpn_avl)); 4067c478bd9Sstevel@tonic-gate lml->lm_fpavl = avlt; 4077c478bd9Sstevel@tonic-gate } 4087c478bd9Sstevel@tonic-gate 4097c478bd9Sstevel@tonic-gate fpn.fpn_name = name; 4107c478bd9Sstevel@tonic-gate fpn.fpn_hash = sgs_str_hash(name); 4117c478bd9Sstevel@tonic-gate 4127c478bd9Sstevel@tonic-gate if ((fpnp = avl_find(lml->lm_fpavl, &fpn, where)) == NULL) 4137c478bd9Sstevel@tonic-gate return (NULL); 4147c478bd9Sstevel@tonic-gate 4157c478bd9Sstevel@tonic-gate return (fpnp->fpn_lmp); 4167c478bd9Sstevel@tonic-gate } 4177c478bd9Sstevel@tonic-gate 4187c478bd9Sstevel@tonic-gate 4197c478bd9Sstevel@tonic-gate /* 42024a6229eSrie * Insert a name into the FullpathNode AVL tree for the link-map list. The 42124a6229eSrie * objects NAME() is the path that would have originally been searched for, and 42224a6229eSrie * is therefore the name to associate with any "where" value. If the object has 4237c478bd9Sstevel@tonic-gate * a different PATHNAME(), perhaps because it has resolved to a different file 4247c478bd9Sstevel@tonic-gate * (see fullpath), then this name is recorded also. See load_file(). 4257c478bd9Sstevel@tonic-gate */ 4267c478bd9Sstevel@tonic-gate int 4277c478bd9Sstevel@tonic-gate fpavl_insert(Lm_list *lml, Rt_map *lmp, const char *name, avl_index_t where) 4287c478bd9Sstevel@tonic-gate { 4297c478bd9Sstevel@tonic-gate FullpathNode *fpnp; 4307c478bd9Sstevel@tonic-gate 4317c478bd9Sstevel@tonic-gate if (where == 0) { 4327c478bd9Sstevel@tonic-gate /* LINTED */ 4337c478bd9Sstevel@tonic-gate Rt_map *_lmp = fpavl_loaded(lml, name, &where); 4347c478bd9Sstevel@tonic-gate 4357c478bd9Sstevel@tonic-gate /* 4367c478bd9Sstevel@tonic-gate * We better not get a hit now, we do not want duplicates in 4377c478bd9Sstevel@tonic-gate * the tree. 4387c478bd9Sstevel@tonic-gate */ 4397c478bd9Sstevel@tonic-gate ASSERT(_lmp == 0); 4407c478bd9Sstevel@tonic-gate } 4417c478bd9Sstevel@tonic-gate 4427c478bd9Sstevel@tonic-gate /* 4437c478bd9Sstevel@tonic-gate * Insert new node in tree 4447c478bd9Sstevel@tonic-gate */ 4457c478bd9Sstevel@tonic-gate if ((fpnp = calloc(sizeof (FullpathNode), 1)) == 0) 4467c478bd9Sstevel@tonic-gate return (0); 4477c478bd9Sstevel@tonic-gate 4487c478bd9Sstevel@tonic-gate fpnp->fpn_name = name; 4497c478bd9Sstevel@tonic-gate fpnp->fpn_hash = sgs_str_hash(name); 4507c478bd9Sstevel@tonic-gate fpnp->fpn_lmp = lmp; 4517c478bd9Sstevel@tonic-gate 4527c478bd9Sstevel@tonic-gate if (alist_append(&FPNODE(lmp), &fpnp, sizeof (FullpathNode *), 4537c478bd9Sstevel@tonic-gate AL_CNT_FPNODE) == 0) { 4547c478bd9Sstevel@tonic-gate free(fpnp); 4557c478bd9Sstevel@tonic-gate return (0); 4567c478bd9Sstevel@tonic-gate } 4577c478bd9Sstevel@tonic-gate 4587c478bd9Sstevel@tonic-gate ASSERT(lml->lm_fpavl != NULL); 4597c478bd9Sstevel@tonic-gate avl_insert(lml->lm_fpavl, fpnp, where); 4607c478bd9Sstevel@tonic-gate return (1); 4617c478bd9Sstevel@tonic-gate } 4627c478bd9Sstevel@tonic-gate 4637c478bd9Sstevel@tonic-gate /* 46424a6229eSrie * Remove an object from the Fullpath AVL tree. Note, this is called *before* 4657c478bd9Sstevel@tonic-gate * the objects link-map is torn down (remove_so), which is where any NAME() and 4667c478bd9Sstevel@tonic-gate * PATHNAME() strings will be deallocated. 4677c478bd9Sstevel@tonic-gate */ 4687c478bd9Sstevel@tonic-gate void 4697c478bd9Sstevel@tonic-gate fpavl_remove(Rt_map *lmp) 4707c478bd9Sstevel@tonic-gate { 4717c478bd9Sstevel@tonic-gate FullpathNode **fpnpp; 4727c478bd9Sstevel@tonic-gate Aliste off; 4737c478bd9Sstevel@tonic-gate 4747c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(FPNODE(lmp), off, fpnpp)) { 4757c478bd9Sstevel@tonic-gate FullpathNode *fpnp = *fpnpp; 4767c478bd9Sstevel@tonic-gate 4777c478bd9Sstevel@tonic-gate avl_remove(LIST(lmp)->lm_fpavl, fpnp); 4787c478bd9Sstevel@tonic-gate free(fpnp); 4797c478bd9Sstevel@tonic-gate } 4807c478bd9Sstevel@tonic-gate free(FPNODE(lmp)); 4817c478bd9Sstevel@tonic-gate FPNODE(lmp) = 0; 4827c478bd9Sstevel@tonic-gate } 4837c478bd9Sstevel@tonic-gate 4847c478bd9Sstevel@tonic-gate 4857c478bd9Sstevel@tonic-gate /* 4867c478bd9Sstevel@tonic-gate * Prior to calling an object, either via a .plt or through dlsym(), make sure 4877c478bd9Sstevel@tonic-gate * its .init has fired. Through topological sorting, ld.so.1 attempts to fire 4887c478bd9Sstevel@tonic-gate * init's in the correct order, however, this order is typically based on needed 4897c478bd9Sstevel@tonic-gate * dependencies and non-lazy relocation bindings. Lazy relocations (.plts) can 4907c478bd9Sstevel@tonic-gate * still occur and result in bindings that were not captured during topological 4917c478bd9Sstevel@tonic-gate * sorting. This routine compensates for this lack of binding information, and 4927c478bd9Sstevel@tonic-gate * provides for dynamic .init firing. 4937c478bd9Sstevel@tonic-gate */ 4947c478bd9Sstevel@tonic-gate void 4957c478bd9Sstevel@tonic-gate is_dep_init(Rt_map * dlmp, Rt_map * clmp) 4967c478bd9Sstevel@tonic-gate { 4977c478bd9Sstevel@tonic-gate Rt_map ** tobj; 4987c478bd9Sstevel@tonic-gate 4997c478bd9Sstevel@tonic-gate /* 5007c478bd9Sstevel@tonic-gate * If the caller is an auditor, and the destination isn't, then don't 5017c478bd9Sstevel@tonic-gate * run any .inits (see comments in load_completion()). 5027c478bd9Sstevel@tonic-gate */ 5037c478bd9Sstevel@tonic-gate if ((LIST(clmp)->lm_flags & LML_FLG_NOAUDIT) && 5047c478bd9Sstevel@tonic-gate (LIST(clmp) != LIST(dlmp))) 5057c478bd9Sstevel@tonic-gate return; 5067c478bd9Sstevel@tonic-gate 5077c478bd9Sstevel@tonic-gate if ((dlmp == clmp) || (rtld_flags & (RT_FL_BREADTH | RT_FL_INITFIRST))) 5087c478bd9Sstevel@tonic-gate return; 5097c478bd9Sstevel@tonic-gate 5107c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & (FLG_RT_RELOCED | FLG_RT_INITDONE)) == 5117c478bd9Sstevel@tonic-gate (FLG_RT_RELOCED | FLG_RT_INITDONE)) 5127c478bd9Sstevel@tonic-gate return; 5137c478bd9Sstevel@tonic-gate 5147c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & (FLG_RT_RELOCED | FLG_RT_INITCALL)) == 5157c478bd9Sstevel@tonic-gate (FLG_RT_RELOCED | FLG_RT_INITCALL)) { 5167c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_no_init(NAME(dlmp))); 5177c478bd9Sstevel@tonic-gate return; 5187c478bd9Sstevel@tonic-gate } 5197c478bd9Sstevel@tonic-gate 5207c478bd9Sstevel@tonic-gate if ((tobj = calloc(2, sizeof (Rt_map *))) != NULL) { 5217c478bd9Sstevel@tonic-gate tobj[0] = dlmp; 5227c478bd9Sstevel@tonic-gate call_init(tobj, DBG_INIT_DYN); 5237c478bd9Sstevel@tonic-gate } 5247c478bd9Sstevel@tonic-gate } 5257c478bd9Sstevel@tonic-gate 5267c478bd9Sstevel@tonic-gate /* 5277c478bd9Sstevel@tonic-gate * In a threaded environment insure the thread responsible for loading an object 5287c478bd9Sstevel@tonic-gate * has completed .init processing for that object before any new thread is 5297c478bd9Sstevel@tonic-gate * allowed to access the object. This check is only valid with libthread 5307c478bd9Sstevel@tonic-gate * TI_VERSION 2, where ld.so.1 implements locking through low level mutexes. 5317c478bd9Sstevel@tonic-gate * 5327c478bd9Sstevel@tonic-gate * When a new link-map is created, the thread that causes it to be loaded is 5337c478bd9Sstevel@tonic-gate * identified by THREADID(dlmp). Compare this with the current thread to 5347c478bd9Sstevel@tonic-gate * determine if it must be blocked. 5357c478bd9Sstevel@tonic-gate * 5367c478bd9Sstevel@tonic-gate * NOTE, there are a number of instances (typically only for .plt processing) 5377c478bd9Sstevel@tonic-gate * where we must skip this test: 5387c478bd9Sstevel@tonic-gate * 5397c478bd9Sstevel@tonic-gate * . any thread id of 0 - threads that call thr_exit() may be in this state 5407c478bd9Sstevel@tonic-gate * thus we can't deduce what tid they used to be. Also some of the 5417c478bd9Sstevel@tonic-gate * lib/libthread worker threads have this id and must bind (to themselves 5427c478bd9Sstevel@tonic-gate * or libc) for libthread to function. 5437c478bd9Sstevel@tonic-gate * 5447c478bd9Sstevel@tonic-gate * . libthread itself binds to libc, and as libthread is INITFIRST 5457c478bd9Sstevel@tonic-gate * libc's .init can't have fired yet. Luckly libc's .init is not required 5467c478bd9Sstevel@tonic-gate * by libthreads binding. 5477c478bd9Sstevel@tonic-gate * 5487c478bd9Sstevel@tonic-gate * . if the caller is an auditor, and the destination isn't, then don't 5497c478bd9Sstevel@tonic-gate * block (see comments in load_completion()). 5507c478bd9Sstevel@tonic-gate */ 5517c478bd9Sstevel@tonic-gate void 5527c478bd9Sstevel@tonic-gate is_dep_ready(Rt_map * dlmp, Rt_map * clmp, int what) 5537c478bd9Sstevel@tonic-gate { 5547c478bd9Sstevel@tonic-gate thread_t tid; 5557c478bd9Sstevel@tonic-gate 5567c478bd9Sstevel@tonic-gate if ((LIST(clmp)->lm_flags & LML_FLG_NOAUDIT) && 5577c478bd9Sstevel@tonic-gate (LIST(clmp) != LIST(dlmp))) 5587c478bd9Sstevel@tonic-gate return; 5597c478bd9Sstevel@tonic-gate 5607c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_CONCUR) && 5617c478bd9Sstevel@tonic-gate ((FLAGS(dlmp) & FLG_RT_INITDONE) == 0) && 5627c478bd9Sstevel@tonic-gate ((FLAGS(clmp) & FLG_RT_INITFRST) == 0) && 5637c478bd9Sstevel@tonic-gate ((tid = rt_thr_self()) != 0) && (THREADID(dlmp) != tid)) { 5647c478bd9Sstevel@tonic-gate while ((FLAGS(dlmp) & FLG_RT_INITDONE) == 0) { 5657c478bd9Sstevel@tonic-gate FLAGS1(dlmp) |= FL1_RT_INITWAIT; 5667c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_wait(what, NAME(clmp), NAME(dlmp))); 5677c478bd9Sstevel@tonic-gate (void) rt_cond_wait(CONDVAR(dlmp), &rtldlock); 5687c478bd9Sstevel@tonic-gate } 5697c478bd9Sstevel@tonic-gate } 5707c478bd9Sstevel@tonic-gate } 5717c478bd9Sstevel@tonic-gate 5727c478bd9Sstevel@tonic-gate /* 5737c478bd9Sstevel@tonic-gate * Execute .{preinit|init|fini}array sections 5747c478bd9Sstevel@tonic-gate */ 5757c478bd9Sstevel@tonic-gate void 5767c478bd9Sstevel@tonic-gate call_array(Addr * array, uint_t arraysz, Rt_map * lmp, uint_t shtype) 5777c478bd9Sstevel@tonic-gate { 5787c478bd9Sstevel@tonic-gate int start, stop, incr, i; 5797c478bd9Sstevel@tonic-gate uint_t arraycnt = (uint_t)(arraysz / sizeof (Addr)); 5807c478bd9Sstevel@tonic-gate 5817c478bd9Sstevel@tonic-gate if (array == NULL) 5827c478bd9Sstevel@tonic-gate return; 5837c478bd9Sstevel@tonic-gate 5847c478bd9Sstevel@tonic-gate /* 5857c478bd9Sstevel@tonic-gate * initarray & preinitarray are walked from beginning to end - while 5867c478bd9Sstevel@tonic-gate * finiarray is walked from end to beginning. 5877c478bd9Sstevel@tonic-gate */ 5887c478bd9Sstevel@tonic-gate if (shtype == SHT_FINI_ARRAY) { 5897c478bd9Sstevel@tonic-gate start = arraycnt - 1; 5907c478bd9Sstevel@tonic-gate stop = incr = -1; 5917c478bd9Sstevel@tonic-gate } else { 5927c478bd9Sstevel@tonic-gate start = 0; 5937c478bd9Sstevel@tonic-gate stop = arraycnt; 5947c478bd9Sstevel@tonic-gate incr = 1; 5957c478bd9Sstevel@tonic-gate } 5967c478bd9Sstevel@tonic-gate 5977c478bd9Sstevel@tonic-gate /* 5987c478bd9Sstevel@tonic-gate * Call the .*array[] entries 5997c478bd9Sstevel@tonic-gate */ 6007c478bd9Sstevel@tonic-gate for (i = start; i != stop; i += incr) { 6017c478bd9Sstevel@tonic-gate void (* fptr)(); 6027c478bd9Sstevel@tonic-gate 6037c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_call_array(NAME(lmp), (void *)array[i], i, 6047c478bd9Sstevel@tonic-gate shtype)); 6057c478bd9Sstevel@tonic-gate 6067c478bd9Sstevel@tonic-gate fptr = (void(*)())array[i]; 6077c478bd9Sstevel@tonic-gate leave(LIST(lmp)); 6087c478bd9Sstevel@tonic-gate (*fptr)(); 6097c478bd9Sstevel@tonic-gate (void) enter(); 6107c478bd9Sstevel@tonic-gate } 6117c478bd9Sstevel@tonic-gate } 6127c478bd9Sstevel@tonic-gate 6137c478bd9Sstevel@tonic-gate 6147c478bd9Sstevel@tonic-gate /* 6157c478bd9Sstevel@tonic-gate * Execute any .init sections. These are passed to us in an lmp array which 6167c478bd9Sstevel@tonic-gate * (by default) will have been sorted. 6177c478bd9Sstevel@tonic-gate */ 6187c478bd9Sstevel@tonic-gate void 6197c478bd9Sstevel@tonic-gate call_init(Rt_map ** tobj, int flag) 6207c478bd9Sstevel@tonic-gate { 6217c478bd9Sstevel@tonic-gate Rt_map ** _tobj, ** _nobj; 6227c478bd9Sstevel@tonic-gate static List pending = { NULL, NULL }; 6237c478bd9Sstevel@tonic-gate 6247c478bd9Sstevel@tonic-gate /* 6257c478bd9Sstevel@tonic-gate * If we're in the middle of an INITFIRST, this must complete before 6267c478bd9Sstevel@tonic-gate * any new init's are fired. In this case add the object list to the 6277c478bd9Sstevel@tonic-gate * pending queue and return. We'll pick up the queue after any 6287c478bd9Sstevel@tonic-gate * INITFIRST objects have their init's fired. 6297c478bd9Sstevel@tonic-gate */ 6307c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_INITFIRST) { 6317c478bd9Sstevel@tonic-gate (void) list_append(&pending, tobj); 6327c478bd9Sstevel@tonic-gate return; 6337c478bd9Sstevel@tonic-gate } 6347c478bd9Sstevel@tonic-gate 6357c478bd9Sstevel@tonic-gate /* 6367c478bd9Sstevel@tonic-gate * If a 'thread initialization' is pending - call it now before any 6377c478bd9Sstevel@tonic-gate * .init code is fired. Also clear the thrinit() to mark it as done. 6387c478bd9Sstevel@tonic-gate * Note, this is called for each link-map list, which is what libc 6397c478bd9Sstevel@tonic-gate * expects. 6407c478bd9Sstevel@tonic-gate */ 6417c478bd9Sstevel@tonic-gate if (thrinit) { 6427c478bd9Sstevel@tonic-gate void (*_thrinit)() = thrinit; 6437c478bd9Sstevel@tonic-gate 6447c478bd9Sstevel@tonic-gate thrinit = 0; 6457c478bd9Sstevel@tonic-gate leave((Lm_list *)0); 6467c478bd9Sstevel@tonic-gate _thrinit(); 6477c478bd9Sstevel@tonic-gate (void) enter(); 6487c478bd9Sstevel@tonic-gate } 6497c478bd9Sstevel@tonic-gate 6507c478bd9Sstevel@tonic-gate /* 6517c478bd9Sstevel@tonic-gate * Traverse the tobj array firing each objects init. 6527c478bd9Sstevel@tonic-gate */ 6537c478bd9Sstevel@tonic-gate for (_tobj = _nobj = tobj, _nobj++; *_tobj != NULL; _tobj++, _nobj++) { 6547c478bd9Sstevel@tonic-gate Rt_map * lmp = *_tobj; 655dffec89cSrie void (* iptr)() = INIT(lmp); 6567c478bd9Sstevel@tonic-gate 6577c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_INITCALL) 6587c478bd9Sstevel@tonic-gate continue; 6597c478bd9Sstevel@tonic-gate 6607c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_INITCALL; 6617c478bd9Sstevel@tonic-gate 6627c478bd9Sstevel@tonic-gate /* 6637c478bd9Sstevel@tonic-gate * Establish an initfirst state if necessary - no other inits 664dffec89cSrie * will be fired (because of additional relocation bindings) 665dffec89cSrie * when in this state. 6667c478bd9Sstevel@tonic-gate */ 6677c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_INITFRST) 6687c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_INITFIRST; 6697c478bd9Sstevel@tonic-gate 6707c478bd9Sstevel@tonic-gate if (INITARRAY(lmp) || iptr) { 6717c478bd9Sstevel@tonic-gate Aliste off; 6727c478bd9Sstevel@tonic-gate Bnd_desc ** bdpp; 6737c478bd9Sstevel@tonic-gate 6747c478bd9Sstevel@tonic-gate /* 6757c478bd9Sstevel@tonic-gate * Make sure that all dependencies that have been 6767c478bd9Sstevel@tonic-gate * relocated to are initialized before this objects 6777c478bd9Sstevel@tonic-gate * .init is executed. This insures that a dependency 6787c478bd9Sstevel@tonic-gate * on an external item that must first be initialized 6797c478bd9Sstevel@tonic-gate * by its associated object is satisfied. 6807c478bd9Sstevel@tonic-gate */ 6817c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(DEPENDS(lmp), off, bdpp)) { 6827c478bd9Sstevel@tonic-gate Bnd_desc * bdp = *bdpp; 6837c478bd9Sstevel@tonic-gate 6847c478bd9Sstevel@tonic-gate if ((bdp->b_flags & BND_REFER) == 0) 6857c478bd9Sstevel@tonic-gate continue; 6867c478bd9Sstevel@tonic-gate is_dep_ready(bdp->b_depend, lmp, DBG_WAIT_INIT); 6877c478bd9Sstevel@tonic-gate } 6887c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_call_init(NAME(lmp), flag)); 6897c478bd9Sstevel@tonic-gate } 6907c478bd9Sstevel@tonic-gate 6917c478bd9Sstevel@tonic-gate if (iptr) { 6927c478bd9Sstevel@tonic-gate leave(LIST(lmp)); 6937c478bd9Sstevel@tonic-gate (*iptr)(); 6947c478bd9Sstevel@tonic-gate (void) enter(); 6957c478bd9Sstevel@tonic-gate } 6967c478bd9Sstevel@tonic-gate 6977c478bd9Sstevel@tonic-gate call_array(INITARRAY(lmp), INITARRAYSZ(lmp), lmp, 6987c478bd9Sstevel@tonic-gate SHT_INIT_ARRAY); 6997c478bd9Sstevel@tonic-gate 7007c478bd9Sstevel@tonic-gate if (INITARRAY(lmp) || iptr) 7017c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_call_init(NAME(lmp), DBG_INIT_DONE)); 7027c478bd9Sstevel@tonic-gate 7037c478bd9Sstevel@tonic-gate /* 7047c478bd9Sstevel@tonic-gate * Set the initdone flag regardless of whether this object 7057c478bd9Sstevel@tonic-gate * actually contains an .init section. This flag prevents us 7067c478bd9Sstevel@tonic-gate * from processing this section again for an .init and also 7077c478bd9Sstevel@tonic-gate * signifies that a .fini must be called should it exist. 7087c478bd9Sstevel@tonic-gate * Clear the sort field for use in later .fini processing. 7097c478bd9Sstevel@tonic-gate */ 7107c478bd9Sstevel@tonic-gate FLAGS(lmp) |= FLG_RT_INITDONE; 711dffec89cSrie SORTVAL(lmp) = -1; 7127c478bd9Sstevel@tonic-gate 7137c478bd9Sstevel@tonic-gate /* 7147c478bd9Sstevel@tonic-gate * Wake anyone up who might be waiting on this .init. 7157c478bd9Sstevel@tonic-gate */ 7167c478bd9Sstevel@tonic-gate if (FLAGS1(lmp) & FL1_RT_INITWAIT) { 7177c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_broadcast(NAME(lmp))); 7187c478bd9Sstevel@tonic-gate (void) rt_cond_broadcast(CONDVAR(lmp)); 7197c478bd9Sstevel@tonic-gate FLAGS1(lmp) &= ~FL1_RT_INITWAIT; 7207c478bd9Sstevel@tonic-gate } 7217c478bd9Sstevel@tonic-gate 7227c478bd9Sstevel@tonic-gate /* 7237c478bd9Sstevel@tonic-gate * If we're firing an INITFIRST object, and other objects must 7247c478bd9Sstevel@tonic-gate * be fired which are not INITFIRST, make sure we grab any 7257c478bd9Sstevel@tonic-gate * pending objects that might have been delayed as this 7267c478bd9Sstevel@tonic-gate * INITFIRST was processed. 7277c478bd9Sstevel@tonic-gate */ 7287c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_INITFIRST) && 7297c478bd9Sstevel@tonic-gate ((*_nobj == NULL) || !(FLAGS(*_nobj) & FLG_RT_INITFRST))) { 7307c478bd9Sstevel@tonic-gate Listnode * lnp; 7317c478bd9Sstevel@tonic-gate Rt_map ** pobj; 7327c478bd9Sstevel@tonic-gate 7337c478bd9Sstevel@tonic-gate rtld_flags &= ~RT_FL_INITFIRST; 7347c478bd9Sstevel@tonic-gate 7357c478bd9Sstevel@tonic-gate while ((lnp = pending.head) != NULL) { 7367c478bd9Sstevel@tonic-gate if ((pending.head = lnp->next) == NULL) 7377c478bd9Sstevel@tonic-gate pending.tail = NULL; 7387c478bd9Sstevel@tonic-gate pobj = lnp->data; 7397c478bd9Sstevel@tonic-gate free(lnp); 7407c478bd9Sstevel@tonic-gate 7417c478bd9Sstevel@tonic-gate call_init(pobj, DBG_INIT_PEND); 7427c478bd9Sstevel@tonic-gate } 7437c478bd9Sstevel@tonic-gate } 7447c478bd9Sstevel@tonic-gate } 7457c478bd9Sstevel@tonic-gate free(tobj); 7467c478bd9Sstevel@tonic-gate } 7477c478bd9Sstevel@tonic-gate 7487c478bd9Sstevel@tonic-gate /* 7497c478bd9Sstevel@tonic-gate * Function called by atexit(3C). Calls all .fini sections related with the 7507c478bd9Sstevel@tonic-gate * mains dependent shared libraries in the order in which the shared libraries 7517c478bd9Sstevel@tonic-gate * have been loaded. Skip any .fini defined in the main executable, as this 7527c478bd9Sstevel@tonic-gate * will be called by crt0 (main was never marked as initdone). 7537c478bd9Sstevel@tonic-gate */ 7547c478bd9Sstevel@tonic-gate void 7557c478bd9Sstevel@tonic-gate call_fini(Lm_list * lml, Rt_map ** tobj) 7567c478bd9Sstevel@tonic-gate { 757dffec89cSrie Rt_map **_tobj; 7587c478bd9Sstevel@tonic-gate 7597c478bd9Sstevel@tonic-gate for (_tobj = tobj; *_tobj != NULL; _tobj++) { 7607c478bd9Sstevel@tonic-gate Rt_map * clmp, * lmp = *_tobj; 7617c478bd9Sstevel@tonic-gate Aliste off; 7627c478bd9Sstevel@tonic-gate Bnd_desc ** bdpp; 7637c478bd9Sstevel@tonic-gate 7647c478bd9Sstevel@tonic-gate /* 7657c478bd9Sstevel@tonic-gate * If concurrency checking isn't enabled only fire .fini if 7667c478bd9Sstevel@tonic-gate * .init has completed. We collect all .fini sections of 7677c478bd9Sstevel@tonic-gate * objects that had their .init collected, but that doesn't 7687c478bd9Sstevel@tonic-gate * mean at the time that the .init had completed. 7697c478bd9Sstevel@tonic-gate */ 7707c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_CONCUR) || 7717c478bd9Sstevel@tonic-gate (FLAGS(lmp) & FLG_RT_INITDONE)) { 772dffec89cSrie void (*fptr)() = FINI(lmp); 7737c478bd9Sstevel@tonic-gate 7747c478bd9Sstevel@tonic-gate if (FINIARRAY(lmp) || fptr) { 7757c478bd9Sstevel@tonic-gate /* 7767c478bd9Sstevel@tonic-gate * If concurrency checking is enabled make sure 7777c478bd9Sstevel@tonic-gate * this object's .init is completed before 7787c478bd9Sstevel@tonic-gate * calling any .fini. 7797c478bd9Sstevel@tonic-gate */ 7807c478bd9Sstevel@tonic-gate is_dep_ready(lmp, lmp, DBG_WAIT_FINI); 7817c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_call_fini(NAME(lmp))); 7827c478bd9Sstevel@tonic-gate } 7837c478bd9Sstevel@tonic-gate 7847c478bd9Sstevel@tonic-gate call_array(FINIARRAY(lmp), FINIARRAYSZ(lmp), 7857c478bd9Sstevel@tonic-gate lmp, SHT_FINI_ARRAY); 7867c478bd9Sstevel@tonic-gate 7877c478bd9Sstevel@tonic-gate if (fptr) { 7887c478bd9Sstevel@tonic-gate leave(LIST(lmp)); 7897c478bd9Sstevel@tonic-gate (*fptr)(); 7907c478bd9Sstevel@tonic-gate (void) enter(); 7917c478bd9Sstevel@tonic-gate } 7927c478bd9Sstevel@tonic-gate } 7937c478bd9Sstevel@tonic-gate 794dffec89cSrie /* 795dffec89cSrie * Skip main, this is explicitly called last in atexit_fini(). 796dffec89cSrie */ 797dffec89cSrie if (FLAGS(lmp) & FLG_RT_ISMAIN) 798dffec89cSrie continue; 799dffec89cSrie 8007c478bd9Sstevel@tonic-gate /* 8017c478bd9Sstevel@tonic-gate * Audit `close' operations at this point. The library has 8027c478bd9Sstevel@tonic-gate * exercised its last instructions (regardless of whether it 8037c478bd9Sstevel@tonic-gate * will be unmapped or not). 8047c478bd9Sstevel@tonic-gate * 8057c478bd9Sstevel@tonic-gate * First call any global auditing. 8067c478bd9Sstevel@tonic-gate */ 8077c478bd9Sstevel@tonic-gate if (lml->lm_tflags & LML_TFLG_AUD_OBJCLOSE) 8087c478bd9Sstevel@tonic-gate _audit_objclose(&(auditors->ad_list), lmp); 8097c478bd9Sstevel@tonic-gate 8107c478bd9Sstevel@tonic-gate /* 8117c478bd9Sstevel@tonic-gate * Finally determine whether this object has local auditing 8127c478bd9Sstevel@tonic-gate * requirements by inspecting itself and then its dependencies. 8137c478bd9Sstevel@tonic-gate */ 8147c478bd9Sstevel@tonic-gate if ((lml->lm_flags & LML_FLG_LOCAUDIT) == 0) 8157c478bd9Sstevel@tonic-gate continue; 8167c478bd9Sstevel@tonic-gate 8177c478bd9Sstevel@tonic-gate if (FLAGS1(lmp) & LML_TFLG_AUD_OBJCLOSE) 8187c478bd9Sstevel@tonic-gate _audit_objclose(&(AUDITORS(lmp)->ad_list), lmp); 8197c478bd9Sstevel@tonic-gate 8207c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(CALLERS(lmp), off, bdpp)) { 8217c478bd9Sstevel@tonic-gate Bnd_desc * bdp = *bdpp; 8227c478bd9Sstevel@tonic-gate 8237c478bd9Sstevel@tonic-gate clmp = bdp->b_caller; 8247c478bd9Sstevel@tonic-gate 8257c478bd9Sstevel@tonic-gate if (FLAGS1(clmp) & LML_TFLG_AUD_OBJCLOSE) { 8267c478bd9Sstevel@tonic-gate _audit_objclose(&(AUDITORS(clmp)->ad_list), lmp); 8277c478bd9Sstevel@tonic-gate break; 8287c478bd9Sstevel@tonic-gate } 8297c478bd9Sstevel@tonic-gate } 8307c478bd9Sstevel@tonic-gate } 8317c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_bind_plt_summary(M_MACH, pltcnt21d, pltcnt24d, 8327c478bd9Sstevel@tonic-gate pltcntu32, pltcntu44, pltcntfull, pltcntfar)); 8337c478bd9Sstevel@tonic-gate 8347c478bd9Sstevel@tonic-gate free(tobj); 8357c478bd9Sstevel@tonic-gate } 8367c478bd9Sstevel@tonic-gate 8377c478bd9Sstevel@tonic-gate void 8387c478bd9Sstevel@tonic-gate atexit_fini() 8397c478bd9Sstevel@tonic-gate { 8407c478bd9Sstevel@tonic-gate Rt_map ** tobj, * lmp; 8417c478bd9Sstevel@tonic-gate Lm_list * lml; 8427c478bd9Sstevel@tonic-gate Listnode * lnp; 8437c478bd9Sstevel@tonic-gate 8447c478bd9Sstevel@tonic-gate (void) enter(); 8457c478bd9Sstevel@tonic-gate 8467c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_ATEXIT; 8477c478bd9Sstevel@tonic-gate 8487c478bd9Sstevel@tonic-gate lml = &lml_main; 849dffec89cSrie lml->lm_flags |= LML_FLG_ATEXIT; 8507c478bd9Sstevel@tonic-gate lmp = (Rt_map *)lml->lm_head; 8517c478bd9Sstevel@tonic-gate 8527c478bd9Sstevel@tonic-gate /* 8537c478bd9Sstevel@tonic-gate * Display any objects that haven't been referenced so far. 8547c478bd9Sstevel@tonic-gate */ 8557c478bd9Sstevel@tonic-gate unused(lml); 8567c478bd9Sstevel@tonic-gate 8577c478bd9Sstevel@tonic-gate /* 8587c478bd9Sstevel@tonic-gate * Reverse topologically sort the main link-map for .fini execution. 8597c478bd9Sstevel@tonic-gate */ 8607c478bd9Sstevel@tonic-gate if (((tobj = tsort(lmp, lml->lm_obj, RT_SORT_FWD)) != 0) && 8617c478bd9Sstevel@tonic-gate (tobj != (Rt_map **)S_ERROR)) 8627c478bd9Sstevel@tonic-gate call_fini(lml, tobj); 8637c478bd9Sstevel@tonic-gate 8647c478bd9Sstevel@tonic-gate /* 865dffec89cSrie * Add an explicit close to main and ld.so.1. Although main's .fini is 866dffec89cSrie * collected in call_fini() to provide for FINITARRAY processing, its 867dffec89cSrie * audit_objclose is explicitly skipped. This provides for it to be 868dffec89cSrie * called last, here. This is the reverse of the explicit calls to 869dffec89cSrie * audit_objopen() made in setup(). 8707c478bd9Sstevel@tonic-gate */ 8717c478bd9Sstevel@tonic-gate if ((lml->lm_tflags | FLAGS1(lmp)) & LML_TFLG_AUD_MASK) { 8727c478bd9Sstevel@tonic-gate audit_objclose(lmp, (Rt_map *)lml_rtld.lm_head); 873dffec89cSrie audit_objclose(lmp, lmp); 8747c478bd9Sstevel@tonic-gate } 8757c478bd9Sstevel@tonic-gate 8767c478bd9Sstevel@tonic-gate /* 8777c478bd9Sstevel@tonic-gate * Now that all .fini code has been run, see what unreferenced objects 8787c478bd9Sstevel@tonic-gate * remain. Any difference between this and the above unused() would 8797c478bd9Sstevel@tonic-gate * indicate an object is only being used for .fini processing, which 8807c478bd9Sstevel@tonic-gate * might be fine, but might also indicate an overhead whose removal 8817c478bd9Sstevel@tonic-gate * would be worth considering. 8827c478bd9Sstevel@tonic-gate */ 8837c478bd9Sstevel@tonic-gate unused(lml); 8847c478bd9Sstevel@tonic-gate 8857c478bd9Sstevel@tonic-gate /* 8867c478bd9Sstevel@tonic-gate * Traverse any alternative link-map lists. 8877c478bd9Sstevel@tonic-gate */ 8887c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(&dynlm_list, lnp, lml)) { 8897c478bd9Sstevel@tonic-gate if (lml->lm_flags & (LML_FLG_BASELM | LML_FLG_RTLDLM)) 8907c478bd9Sstevel@tonic-gate continue; 8917c478bd9Sstevel@tonic-gate 8927c478bd9Sstevel@tonic-gate if ((lmp = (Rt_map *)lml->lm_head) == 0) 8937c478bd9Sstevel@tonic-gate continue; 8947c478bd9Sstevel@tonic-gate 895dffec89cSrie lml->lm_flags |= LML_FLG_ATEXIT; 896dffec89cSrie 8977c478bd9Sstevel@tonic-gate /* 8987c478bd9Sstevel@tonic-gate * Reverse topologically sort the link-map for .fini execution. 8997c478bd9Sstevel@tonic-gate */ 9007c478bd9Sstevel@tonic-gate if (((tobj = tsort(lmp, lml->lm_obj, RT_SORT_FWD)) != 0) && 9017c478bd9Sstevel@tonic-gate (tobj != (Rt_map **)S_ERROR)) 9027c478bd9Sstevel@tonic-gate call_fini(lml, tobj); 9037c478bd9Sstevel@tonic-gate 9047c478bd9Sstevel@tonic-gate unused(lml); 9057c478bd9Sstevel@tonic-gate } 9067c478bd9Sstevel@tonic-gate 9077c478bd9Sstevel@tonic-gate /* 9087c478bd9Sstevel@tonic-gate * Finally reverse topologically sort the runtime linkers link-map for 9097c478bd9Sstevel@tonic-gate * .fini execution. 9107c478bd9Sstevel@tonic-gate */ 9117c478bd9Sstevel@tonic-gate lml = &lml_rtld; 912dffec89cSrie lml->lm_flags |= LML_FLG_ATEXIT; 9137c478bd9Sstevel@tonic-gate lmp = (Rt_map *)lml->lm_head; 9147c478bd9Sstevel@tonic-gate 9157c478bd9Sstevel@tonic-gate dbg_mask = 0; 9167c478bd9Sstevel@tonic-gate 9177c478bd9Sstevel@tonic-gate if (((tobj = tsort(lmp, lml->lm_obj, RT_SORT_FWD)) != 0) && 9187c478bd9Sstevel@tonic-gate (tobj != (Rt_map **)S_ERROR)) 9197c478bd9Sstevel@tonic-gate call_fini(lml, tobj); 9207c478bd9Sstevel@tonic-gate 9217c478bd9Sstevel@tonic-gate leave(&lml_main); 9227c478bd9Sstevel@tonic-gate } 9237c478bd9Sstevel@tonic-gate 9247c478bd9Sstevel@tonic-gate 9257c478bd9Sstevel@tonic-gate /* 9267c478bd9Sstevel@tonic-gate * This routine is called to complete any runtime linker activity which may have 9277c478bd9Sstevel@tonic-gate * resulted in objects being loaded. This is called from all user entry points 9287c478bd9Sstevel@tonic-gate * and from any internal dl*() requests. 9297c478bd9Sstevel@tonic-gate */ 9307c478bd9Sstevel@tonic-gate void 9317c478bd9Sstevel@tonic-gate load_completion(Rt_map * nlmp, Rt_map * clmp) 9327c478bd9Sstevel@tonic-gate { 9337c478bd9Sstevel@tonic-gate Rt_map **tobj = 0; 9347c478bd9Sstevel@tonic-gate 9357c478bd9Sstevel@tonic-gate /* 9367c478bd9Sstevel@tonic-gate * Establish any .init processing. Note, in a world of lazy loading, 9377c478bd9Sstevel@tonic-gate * objects may have been loaded regardless of whether the users request 9387c478bd9Sstevel@tonic-gate * was fulfilled (i.e., a dlsym() request may have failed to find a 9397c478bd9Sstevel@tonic-gate * symbol but objects might have been loaded during its search). Thus, 9407c478bd9Sstevel@tonic-gate * any tsorting starts from the nlmp (new link-maps) pointer and not 9417c478bd9Sstevel@tonic-gate * necessarily from the link-map that may have satisfied the request. 9427c478bd9Sstevel@tonic-gate * 9437c478bd9Sstevel@tonic-gate * Note, if the caller is an auditor, and the destination isn't, then 9447c478bd9Sstevel@tonic-gate * don't run any .inits. This scenario is typical of an auditor trying 9457c478bd9Sstevel@tonic-gate * to inspect another link-map for symbols. Allow this inspection 9467c478bd9Sstevel@tonic-gate * without running any code on the inspected link-map, as running this 9477c478bd9Sstevel@tonic-gate * code may reenter the auditor, who has not yet finished their own 9487c478bd9Sstevel@tonic-gate * initialization. 9497c478bd9Sstevel@tonic-gate */ 9507c478bd9Sstevel@tonic-gate if (nlmp && ((clmp == 0) || 9517c478bd9Sstevel@tonic-gate ((LIST(clmp)->lm_flags & LML_FLG_NOAUDIT) == 0) || 9527c478bd9Sstevel@tonic-gate (LIST(clmp) == LIST(nlmp)))) { 953dffec89cSrie if ((tobj = tsort(nlmp, LIST(nlmp)->lm_init, 954dffec89cSrie RT_SORT_REV)) == (Rt_map **)S_ERROR) 9557c478bd9Sstevel@tonic-gate tobj = 0; 9567c478bd9Sstevel@tonic-gate } 9577c478bd9Sstevel@tonic-gate 9587c478bd9Sstevel@tonic-gate /* 9597c478bd9Sstevel@tonic-gate * Indicate the link-map list is consistent. 9607c478bd9Sstevel@tonic-gate */ 9617c478bd9Sstevel@tonic-gate if (clmp && 9627c478bd9Sstevel@tonic-gate ((LIST(clmp)->lm_tflags | FLAGS1(clmp)) & LML_TFLG_AUD_ACTIVITY)) 9637c478bd9Sstevel@tonic-gate audit_activity(clmp, LA_ACT_CONSISTENT); 9647c478bd9Sstevel@tonic-gate 9657c478bd9Sstevel@tonic-gate /* 9667c478bd9Sstevel@tonic-gate * Fire any .init's. 9677c478bd9Sstevel@tonic-gate */ 9687c478bd9Sstevel@tonic-gate if (tobj) 9697c478bd9Sstevel@tonic-gate call_init(tobj, DBG_INIT_SORT); 9707c478bd9Sstevel@tonic-gate } 9717c478bd9Sstevel@tonic-gate 9727c478bd9Sstevel@tonic-gate /* 9737c478bd9Sstevel@tonic-gate * Append an item to the specified list, and return a pointer to the list 9747c478bd9Sstevel@tonic-gate * node created. 9757c478bd9Sstevel@tonic-gate */ 9767c478bd9Sstevel@tonic-gate Listnode * 9777c478bd9Sstevel@tonic-gate list_append(List *lst, const void *item) 9787c478bd9Sstevel@tonic-gate { 9797c478bd9Sstevel@tonic-gate Listnode * _lnp; 9807c478bd9Sstevel@tonic-gate 9817c478bd9Sstevel@tonic-gate if ((_lnp = malloc(sizeof (Listnode))) == 0) 9827c478bd9Sstevel@tonic-gate return (0); 9837c478bd9Sstevel@tonic-gate 9847c478bd9Sstevel@tonic-gate _lnp->data = (void *)item; 9857c478bd9Sstevel@tonic-gate _lnp->next = NULL; 9867c478bd9Sstevel@tonic-gate 9877c478bd9Sstevel@tonic-gate if (lst->head == NULL) 9887c478bd9Sstevel@tonic-gate lst->tail = lst->head = _lnp; 9897c478bd9Sstevel@tonic-gate else { 9907c478bd9Sstevel@tonic-gate lst->tail->next = _lnp; 9917c478bd9Sstevel@tonic-gate lst->tail = lst->tail->next; 9927c478bd9Sstevel@tonic-gate } 9937c478bd9Sstevel@tonic-gate return (_lnp); 9947c478bd9Sstevel@tonic-gate } 9957c478bd9Sstevel@tonic-gate 9967c478bd9Sstevel@tonic-gate 9977c478bd9Sstevel@tonic-gate /* 9987c478bd9Sstevel@tonic-gate * Add an item after specified listnode, and return a pointer to the list 9997c478bd9Sstevel@tonic-gate * node created. 10007c478bd9Sstevel@tonic-gate */ 10017c478bd9Sstevel@tonic-gate Listnode * 10027c478bd9Sstevel@tonic-gate list_insert(List *lst, const void *item, Listnode *lnp) 10037c478bd9Sstevel@tonic-gate { 10047c478bd9Sstevel@tonic-gate Listnode * _lnp; 10057c478bd9Sstevel@tonic-gate 10067c478bd9Sstevel@tonic-gate if ((_lnp = malloc(sizeof (Listnode))) == (Listnode *)0) 10077c478bd9Sstevel@tonic-gate return (0); 10087c478bd9Sstevel@tonic-gate 10097c478bd9Sstevel@tonic-gate _lnp->data = (void *)item; 10107c478bd9Sstevel@tonic-gate _lnp->next = lnp->next; 10117c478bd9Sstevel@tonic-gate if (_lnp->next == NULL) 10127c478bd9Sstevel@tonic-gate lst->tail = _lnp; 10137c478bd9Sstevel@tonic-gate lnp->next = _lnp; 10147c478bd9Sstevel@tonic-gate return (_lnp); 10157c478bd9Sstevel@tonic-gate } 10167c478bd9Sstevel@tonic-gate 10177c478bd9Sstevel@tonic-gate /* 10187c478bd9Sstevel@tonic-gate * Prepend an item to the specified list, and return a pointer to the 10197c478bd9Sstevel@tonic-gate * list node created. 10207c478bd9Sstevel@tonic-gate */ 10217c478bd9Sstevel@tonic-gate Listnode * 10227c478bd9Sstevel@tonic-gate list_prepend(List * lst, const void * item) 10237c478bd9Sstevel@tonic-gate { 10247c478bd9Sstevel@tonic-gate Listnode * _lnp; 10257c478bd9Sstevel@tonic-gate 10267c478bd9Sstevel@tonic-gate if ((_lnp = malloc(sizeof (Listnode))) == (Listnode *)0) 10277c478bd9Sstevel@tonic-gate return (0); 10287c478bd9Sstevel@tonic-gate 10297c478bd9Sstevel@tonic-gate _lnp->data = (void *)item; 10307c478bd9Sstevel@tonic-gate 10317c478bd9Sstevel@tonic-gate if (lst->head == NULL) { 10327c478bd9Sstevel@tonic-gate _lnp->next = NULL; 10337c478bd9Sstevel@tonic-gate lst->tail = lst->head = _lnp; 10347c478bd9Sstevel@tonic-gate } else { 10357c478bd9Sstevel@tonic-gate _lnp->next = lst->head; 10367c478bd9Sstevel@tonic-gate lst->head = _lnp; 10377c478bd9Sstevel@tonic-gate } 10387c478bd9Sstevel@tonic-gate return (_lnp); 10397c478bd9Sstevel@tonic-gate } 10407c478bd9Sstevel@tonic-gate 10417c478bd9Sstevel@tonic-gate 10427c478bd9Sstevel@tonic-gate /* 10437c478bd9Sstevel@tonic-gate * Delete a 'listnode' from a list. 10447c478bd9Sstevel@tonic-gate */ 10457c478bd9Sstevel@tonic-gate void 10467c478bd9Sstevel@tonic-gate list_delete(List * lst, void * item) 10477c478bd9Sstevel@tonic-gate { 10487c478bd9Sstevel@tonic-gate Listnode * clnp, * plnp; 10497c478bd9Sstevel@tonic-gate 10507c478bd9Sstevel@tonic-gate for (plnp = NULL, clnp = lst->head; clnp; clnp = clnp->next) { 10517c478bd9Sstevel@tonic-gate if (item == clnp->data) 10527c478bd9Sstevel@tonic-gate break; 10537c478bd9Sstevel@tonic-gate plnp = clnp; 10547c478bd9Sstevel@tonic-gate } 10557c478bd9Sstevel@tonic-gate 10567c478bd9Sstevel@tonic-gate if (clnp == 0) 10577c478bd9Sstevel@tonic-gate return; 10587c478bd9Sstevel@tonic-gate 10597c478bd9Sstevel@tonic-gate if (lst->head == clnp) 10607c478bd9Sstevel@tonic-gate lst->head = clnp->next; 10617c478bd9Sstevel@tonic-gate if (lst->tail == clnp) 10627c478bd9Sstevel@tonic-gate lst->tail = plnp; 10637c478bd9Sstevel@tonic-gate 10647c478bd9Sstevel@tonic-gate if (plnp) 10657c478bd9Sstevel@tonic-gate plnp->next = clnp->next; 10667c478bd9Sstevel@tonic-gate 10677c478bd9Sstevel@tonic-gate free(clnp); 10687c478bd9Sstevel@tonic-gate } 10697c478bd9Sstevel@tonic-gate 10707c478bd9Sstevel@tonic-gate /* 10717c478bd9Sstevel@tonic-gate * Append an item to the specified link map control list. 10727c478bd9Sstevel@tonic-gate */ 10737c478bd9Sstevel@tonic-gate void 10747c478bd9Sstevel@tonic-gate lm_append(Lm_list *lml, Aliste lmco, Rt_map *lmp) 10757c478bd9Sstevel@tonic-gate { 10767c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 10777c478bd9Sstevel@tonic-gate int add = 1; 10787c478bd9Sstevel@tonic-gate 10797c478bd9Sstevel@tonic-gate /* 10807c478bd9Sstevel@tonic-gate * Indicate that this link-map list has a new object. 10817c478bd9Sstevel@tonic-gate */ 10827c478bd9Sstevel@tonic-gate (lml->lm_obj)++; 10837c478bd9Sstevel@tonic-gate 10847c478bd9Sstevel@tonic-gate /* 10857c478bd9Sstevel@tonic-gate * Alert the debuggers that we are about to mess with the main link-map 10867c478bd9Sstevel@tonic-gate * control list. 10877c478bd9Sstevel@tonic-gate */ 10887c478bd9Sstevel@tonic-gate if ((lmco == ALO_DATA) && ((lml->lm_flags & LML_FLG_DBNOTIF) == 0)) 10897c478bd9Sstevel@tonic-gate rd_event(lml, RD_DLACTIVITY, RT_DELETE); 10907c478bd9Sstevel@tonic-gate 10917c478bd9Sstevel@tonic-gate /* LINTED */ 10927c478bd9Sstevel@tonic-gate lmc = (Lm_cntl *)((char *)lml->lm_lists + lmco); 10937c478bd9Sstevel@tonic-gate 10947c478bd9Sstevel@tonic-gate /* 10957c478bd9Sstevel@tonic-gate * A link-map list header points to one of more link-map control lists 10967c478bd9Sstevel@tonic-gate * (see include/rtld.h). The initial list, pointed to by lm_cntl, is 10977c478bd9Sstevel@tonic-gate * the list of relocated objects. Other lists maintain objects that 10987c478bd9Sstevel@tonic-gate * are still being analyzed or relocated. This list provides the core 10997c478bd9Sstevel@tonic-gate * link-map list information used by all ld.so.1 routines. 11007c478bd9Sstevel@tonic-gate */ 11017c478bd9Sstevel@tonic-gate if (lmc->lc_head == NULL) { 11027c478bd9Sstevel@tonic-gate /* 11037c478bd9Sstevel@tonic-gate * If this is the first link-map for the given control list, 11047c478bd9Sstevel@tonic-gate * initialize the list. 11057c478bd9Sstevel@tonic-gate */ 11067c478bd9Sstevel@tonic-gate lmc->lc_head = lmc->lc_tail = lmp; 11077c478bd9Sstevel@tonic-gate add = 0; 11087c478bd9Sstevel@tonic-gate 11097c478bd9Sstevel@tonic-gate } else if (FLAGS(lmp) & FLG_RT_INTRPOSE) { 11107c478bd9Sstevel@tonic-gate Rt_map *tlmp; 11117c478bd9Sstevel@tonic-gate 11127c478bd9Sstevel@tonic-gate /* 11137c478bd9Sstevel@tonic-gate * If this is an interposer then append the link-map following 11147c478bd9Sstevel@tonic-gate * any other interposers (these are objects that have been 11157c478bd9Sstevel@tonic-gate * previously preloaded, or were identified with -z interpose). 11167c478bd9Sstevel@tonic-gate * Interposers can only be inserted on the first link-map 11177c478bd9Sstevel@tonic-gate * control list, as once relocation has started, interposition 11187c478bd9Sstevel@tonic-gate * from new interposers can't be guaranteed. 11197c478bd9Sstevel@tonic-gate * 11207c478bd9Sstevel@tonic-gate * NOTE: We do not interpose on the head of a list. This model 11217c478bd9Sstevel@tonic-gate * evolved because dynamic executables have already been fully 11227c478bd9Sstevel@tonic-gate * relocated within themselves and thus can't be interposed on. 11237c478bd9Sstevel@tonic-gate * Nowadays it's possible to have shared objects at the head of 11247c478bd9Sstevel@tonic-gate * a list, which conceptually means they could be interposed on. 11257c478bd9Sstevel@tonic-gate * But, shared objects can be created via dldump() and may only 11267c478bd9Sstevel@tonic-gate * be partially relocated (just relatives), in which case they 11277c478bd9Sstevel@tonic-gate * are interposable, but are marked as fixed (ET_EXEC). 11287c478bd9Sstevel@tonic-gate * 11297c478bd9Sstevel@tonic-gate * Thus we really don't have a clear method of deciding when the 11307c478bd9Sstevel@tonic-gate * head of a link-map is interposable. So, to be consistent, 11317c478bd9Sstevel@tonic-gate * for now only add interposers after the link-map lists head 11327c478bd9Sstevel@tonic-gate * object. 11337c478bd9Sstevel@tonic-gate */ 11347c478bd9Sstevel@tonic-gate for (tlmp = (Rt_map *)NEXT(lmc->lc_head); tlmp; 11357c478bd9Sstevel@tonic-gate tlmp = (Rt_map *)NEXT(tlmp)) { 11367c478bd9Sstevel@tonic-gate 11377c478bd9Sstevel@tonic-gate if (FLAGS(tlmp) & FLG_RT_INTRPOSE) 11387c478bd9Sstevel@tonic-gate continue; 11397c478bd9Sstevel@tonic-gate 11407c478bd9Sstevel@tonic-gate /* 11417c478bd9Sstevel@tonic-gate * Insert the new link-map before this non-interposer, 11427c478bd9Sstevel@tonic-gate * and indicate an interposer is found. 11437c478bd9Sstevel@tonic-gate */ 11447c478bd9Sstevel@tonic-gate NEXT((Rt_map *)PREV(tlmp)) = (Link_map *)lmp; 11457c478bd9Sstevel@tonic-gate PREV(lmp) = PREV(tlmp); 11467c478bd9Sstevel@tonic-gate 11477c478bd9Sstevel@tonic-gate NEXT(lmp) = (Link_map *)tlmp; 11487c478bd9Sstevel@tonic-gate PREV(tlmp) = (Link_map *)lmp; 11497c478bd9Sstevel@tonic-gate 11507c478bd9Sstevel@tonic-gate lmc->lc_flags |= LMC_FLG_REANALYZE; 11517c478bd9Sstevel@tonic-gate add = 0; 11527c478bd9Sstevel@tonic-gate break; 11537c478bd9Sstevel@tonic-gate } 11547c478bd9Sstevel@tonic-gate } 11557c478bd9Sstevel@tonic-gate 11567c478bd9Sstevel@tonic-gate /* 11577c478bd9Sstevel@tonic-gate * Fall through to appending the new link map to the tail of the list. 11587c478bd9Sstevel@tonic-gate * If we're processing the initial objects of this link-map list, add 11597c478bd9Sstevel@tonic-gate * them to the backward compatibility list. 11607c478bd9Sstevel@tonic-gate */ 11617c478bd9Sstevel@tonic-gate if (add) { 11627c478bd9Sstevel@tonic-gate NEXT(lmc->lc_tail) = (Link_map *)lmp; 11637c478bd9Sstevel@tonic-gate PREV(lmp) = (Link_map *)lmc->lc_tail; 11647c478bd9Sstevel@tonic-gate lmc->lc_tail = lmp; 11657c478bd9Sstevel@tonic-gate } 11667c478bd9Sstevel@tonic-gate 11677c478bd9Sstevel@tonic-gate /* 11687c478bd9Sstevel@tonic-gate * Having added this link-map to a control list, indicate which control 11697c478bd9Sstevel@tonic-gate * list the link-map belongs to. Note, control list information is 11707c478bd9Sstevel@tonic-gate * always maintained as an offset, as the Alist can be reallocated. 11717c478bd9Sstevel@tonic-gate */ 11727c478bd9Sstevel@tonic-gate CNTL(lmp) = lmco; 11737c478bd9Sstevel@tonic-gate 11747c478bd9Sstevel@tonic-gate /* 11757c478bd9Sstevel@tonic-gate * Indicate if an interposer is found. Note that the first object on a 11767c478bd9Sstevel@tonic-gate * link-map can be explicitly defined as an interposer so that it can 11777c478bd9Sstevel@tonic-gate * provide interposition over direct binding requests. 11787c478bd9Sstevel@tonic-gate */ 11797c478bd9Sstevel@tonic-gate if (FLAGS(lmp) & FLG_RT_INTRPOSE) 11807c478bd9Sstevel@tonic-gate lml->lm_flags |= LML_FLG_INTRPOSE; 11817c478bd9Sstevel@tonic-gate 11827c478bd9Sstevel@tonic-gate /* 11837c478bd9Sstevel@tonic-gate * For backward compatibility with debuggers, the link-map list contains 11847c478bd9Sstevel@tonic-gate * pointers to the main control list. 11857c478bd9Sstevel@tonic-gate */ 11867c478bd9Sstevel@tonic-gate if (lmco == ALO_DATA) { 11877c478bd9Sstevel@tonic-gate lml->lm_head = lmc->lc_head; 11887c478bd9Sstevel@tonic-gate lml->lm_tail = lmc->lc_tail; 11897c478bd9Sstevel@tonic-gate } 11907c478bd9Sstevel@tonic-gate } 11917c478bd9Sstevel@tonic-gate 11927c478bd9Sstevel@tonic-gate /* 11937c478bd9Sstevel@tonic-gate * Delete an item from the specified link map control list. 11947c478bd9Sstevel@tonic-gate */ 11957c478bd9Sstevel@tonic-gate void 11967c478bd9Sstevel@tonic-gate lm_delete(Lm_list *lml, Rt_map *lmp) 11977c478bd9Sstevel@tonic-gate { 11987c478bd9Sstevel@tonic-gate Lm_cntl *lmc; 11997c478bd9Sstevel@tonic-gate 12007c478bd9Sstevel@tonic-gate /* 12017c478bd9Sstevel@tonic-gate * If the control list pointer hasn't been initialized, this object 12027c478bd9Sstevel@tonic-gate * never got added to a link-map list. 12037c478bd9Sstevel@tonic-gate */ 12047c478bd9Sstevel@tonic-gate if (CNTL(lmp) == 0) 12057c478bd9Sstevel@tonic-gate return; 12067c478bd9Sstevel@tonic-gate 12077c478bd9Sstevel@tonic-gate /* 12087c478bd9Sstevel@tonic-gate * Alert the debuggers that we are about to mess with the main link-map 12097c478bd9Sstevel@tonic-gate * control list. 12107c478bd9Sstevel@tonic-gate */ 12117c478bd9Sstevel@tonic-gate if ((CNTL(lmp) == ALO_DATA) && ((lml->lm_flags & LML_FLG_DBNOTIF) == 0)) 12127c478bd9Sstevel@tonic-gate rd_event(lml, RD_DLACTIVITY, RT_DELETE); 12137c478bd9Sstevel@tonic-gate 12147c478bd9Sstevel@tonic-gate /* LINTED */ 12157c478bd9Sstevel@tonic-gate lmc = (Lm_cntl *)((char *)lml->lm_lists + CNTL(lmp)); 12167c478bd9Sstevel@tonic-gate 12177c478bd9Sstevel@tonic-gate if (lmc->lc_head == lmp) 12187c478bd9Sstevel@tonic-gate lmc->lc_head = (Rt_map *)NEXT(lmp); 12197c478bd9Sstevel@tonic-gate else 12207c478bd9Sstevel@tonic-gate NEXT((Rt_map *)PREV(lmp)) = (void *)NEXT(lmp); 12217c478bd9Sstevel@tonic-gate 12227c478bd9Sstevel@tonic-gate if (lmc->lc_tail == lmp) 12237c478bd9Sstevel@tonic-gate lmc->lc_tail = (Rt_map *)PREV(lmp); 12247c478bd9Sstevel@tonic-gate else 12257c478bd9Sstevel@tonic-gate PREV((Rt_map *)NEXT(lmp)) = PREV(lmp); 12267c478bd9Sstevel@tonic-gate 12277c478bd9Sstevel@tonic-gate /* 12287c478bd9Sstevel@tonic-gate * For backward compatibility with debuggers, the link-map list contains 12297c478bd9Sstevel@tonic-gate * pointers to the main control list. 12307c478bd9Sstevel@tonic-gate */ 12317c478bd9Sstevel@tonic-gate if (lmc == (Lm_cntl *)&(lml->lm_lists->al_data)) { 12327c478bd9Sstevel@tonic-gate lml->lm_head = lmc->lc_head; 12337c478bd9Sstevel@tonic-gate lml->lm_tail = lmc->lc_tail; 12347c478bd9Sstevel@tonic-gate } 12357c478bd9Sstevel@tonic-gate 12367c478bd9Sstevel@tonic-gate /* 12377c478bd9Sstevel@tonic-gate * Indicate we have one less object on this control list. 12387c478bd9Sstevel@tonic-gate */ 12397c478bd9Sstevel@tonic-gate (lml->lm_obj)--; 12407c478bd9Sstevel@tonic-gate } 12417c478bd9Sstevel@tonic-gate 12427c478bd9Sstevel@tonic-gate /* 12437c478bd9Sstevel@tonic-gate * Move a link-map control list to another. Objects that are being relocated 12447c478bd9Sstevel@tonic-gate * are maintained on secondary control lists. Once their relocation is 12457c478bd9Sstevel@tonic-gate * complete, the entire list is appended to the previous control list, as this 12467c478bd9Sstevel@tonic-gate * list must have been the trigger for generating the new control list. 12477c478bd9Sstevel@tonic-gate */ 12487c478bd9Sstevel@tonic-gate void 12497c478bd9Sstevel@tonic-gate lm_move(Lm_list *lml, Aliste nlmco, Aliste plmco, Lm_cntl *nlmc, Lm_cntl *plmc) 12507c478bd9Sstevel@tonic-gate { 12517c478bd9Sstevel@tonic-gate Rt_map *lmp; 12527c478bd9Sstevel@tonic-gate 12537c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_file_cntl(lml, nlmco, plmco)); 12547c478bd9Sstevel@tonic-gate 12557c478bd9Sstevel@tonic-gate /* 12567c478bd9Sstevel@tonic-gate * Alert the debuggers that we are about to mess with the main link-map 12577c478bd9Sstevel@tonic-gate * control list. 12587c478bd9Sstevel@tonic-gate */ 12597c478bd9Sstevel@tonic-gate if ((plmco == ALO_DATA) && ((lml->lm_flags & LML_FLG_DBNOTIF) == 0)) 12607c478bd9Sstevel@tonic-gate rd_event(lml, RD_DLACTIVITY, RT_ADD); 12617c478bd9Sstevel@tonic-gate 12627c478bd9Sstevel@tonic-gate /* 12637c478bd9Sstevel@tonic-gate * Indicate each new link-map has been moved to the previous link-map 12647c478bd9Sstevel@tonic-gate * control list. 12657c478bd9Sstevel@tonic-gate */ 12667c478bd9Sstevel@tonic-gate 12677c478bd9Sstevel@tonic-gate for (lmp = nlmc->lc_head; lmp; lmp = (Rt_map *)NEXT(lmp)) 12687c478bd9Sstevel@tonic-gate CNTL(lmp) = plmco; 12697c478bd9Sstevel@tonic-gate 12707c478bd9Sstevel@tonic-gate /* 12717c478bd9Sstevel@tonic-gate * Move the new link-map control list, to the callers link-map control 12727c478bd9Sstevel@tonic-gate * list. 12737c478bd9Sstevel@tonic-gate */ 12747c478bd9Sstevel@tonic-gate if (plmc->lc_head == 0) { 12757c478bd9Sstevel@tonic-gate plmc->lc_head = nlmc->lc_head; 12767c478bd9Sstevel@tonic-gate PREV(nlmc->lc_head) = 0; 12777c478bd9Sstevel@tonic-gate } else { 12787c478bd9Sstevel@tonic-gate NEXT(plmc->lc_tail) = (Link_map *)nlmc->lc_head; 12797c478bd9Sstevel@tonic-gate PREV(nlmc->lc_head) = (Link_map *)plmc->lc_tail; 12807c478bd9Sstevel@tonic-gate } 12817c478bd9Sstevel@tonic-gate 12827c478bd9Sstevel@tonic-gate plmc->lc_tail = nlmc->lc_tail; 12837c478bd9Sstevel@tonic-gate nlmc->lc_head = nlmc->lc_tail = 0; 12847c478bd9Sstevel@tonic-gate 12857c478bd9Sstevel@tonic-gate /* 12867c478bd9Sstevel@tonic-gate * For backward compatibility with debuggers, the link-map list contains 12877c478bd9Sstevel@tonic-gate * pointers to the main control list. 12887c478bd9Sstevel@tonic-gate */ 12897c478bd9Sstevel@tonic-gate if (plmco == ALO_DATA) { 12907c478bd9Sstevel@tonic-gate lml->lm_head = plmc->lc_head; 12917c478bd9Sstevel@tonic-gate lml->lm_tail = plmc->lc_tail; 12927c478bd9Sstevel@tonic-gate } 12937c478bd9Sstevel@tonic-gate } 12947c478bd9Sstevel@tonic-gate 12957c478bd9Sstevel@tonic-gate /* 12967c478bd9Sstevel@tonic-gate * Dlopening a family of objects occurs on a new link-map control list. If the 12977c478bd9Sstevel@tonic-gate * dlopen fails, then its handle is used to tear down the family (dlclose). 12987c478bd9Sstevel@tonic-gate * However, the relocation of this family may have triggered other objects to 12997c478bd9Sstevel@tonic-gate * be loaded, and after their relocation they will have been moved to the 13007c478bd9Sstevel@tonic-gate * dlopen families control list. After a dlopen() failure, see if there are 13017c478bd9Sstevel@tonic-gate * any objects that can be savaged before tearing down this control list. 13027c478bd9Sstevel@tonic-gate */ 13037c478bd9Sstevel@tonic-gate int 13047c478bd9Sstevel@tonic-gate lm_salvage(Lm_list *lml, int test, Aliste nlmco) 13057c478bd9Sstevel@tonic-gate { 13067c478bd9Sstevel@tonic-gate Lm_cntl *nlmc; 13077c478bd9Sstevel@tonic-gate 13087c478bd9Sstevel@tonic-gate /* 13097c478bd9Sstevel@tonic-gate * If a dlopen occurred on a new link-map list, then its dlclose may 13107c478bd9Sstevel@tonic-gate * have completely torn down the link-map list. Check that the link-map 13117c478bd9Sstevel@tonic-gate * list still exists before proceeding. 13127c478bd9Sstevel@tonic-gate */ 13137c478bd9Sstevel@tonic-gate if (test) { 13147c478bd9Sstevel@tonic-gate Listnode *lnp; 13157c478bd9Sstevel@tonic-gate Lm_list *tlml; 13167c478bd9Sstevel@tonic-gate int found = 0; 13177c478bd9Sstevel@tonic-gate 13187c478bd9Sstevel@tonic-gate for (LIST_TRAVERSE(&dynlm_list, lnp, tlml)) { 13197c478bd9Sstevel@tonic-gate if (tlml == lml) { 13207c478bd9Sstevel@tonic-gate found++; 13217c478bd9Sstevel@tonic-gate break; 13227c478bd9Sstevel@tonic-gate } 13237c478bd9Sstevel@tonic-gate } 13247c478bd9Sstevel@tonic-gate if (found == 0) 13257c478bd9Sstevel@tonic-gate return (0); 13267c478bd9Sstevel@tonic-gate } 13277c478bd9Sstevel@tonic-gate 13287c478bd9Sstevel@tonic-gate /* LINTED */ 13297c478bd9Sstevel@tonic-gate nlmc = (Lm_cntl *)((char *)lml->lm_lists + nlmco); 13307c478bd9Sstevel@tonic-gate 13317c478bd9Sstevel@tonic-gate /* 13327c478bd9Sstevel@tonic-gate * If this link-map control list still contains objects, determine the 13337c478bd9Sstevel@tonic-gate * previous control list and move the objects. 13347c478bd9Sstevel@tonic-gate */ 13357c478bd9Sstevel@tonic-gate if (nlmc->lc_head) { 13367c478bd9Sstevel@tonic-gate Lm_cntl *plmc; 13377c478bd9Sstevel@tonic-gate Aliste plmco; 13387c478bd9Sstevel@tonic-gate 13397c478bd9Sstevel@tonic-gate plmco = nlmco - lml->lm_lists->al_size; 13407c478bd9Sstevel@tonic-gate /* LINTED */ 13417c478bd9Sstevel@tonic-gate plmc = (Lm_cntl *)((char *)lml->lm_lists + plmco); 13427c478bd9Sstevel@tonic-gate 13437c478bd9Sstevel@tonic-gate lm_move(lml, nlmco, plmco, nlmc, plmc); 13447c478bd9Sstevel@tonic-gate } 13457c478bd9Sstevel@tonic-gate return (1); 13467c478bd9Sstevel@tonic-gate } 13477c478bd9Sstevel@tonic-gate 13487c478bd9Sstevel@tonic-gate /* 13497c478bd9Sstevel@tonic-gate * Environment variables can have a variety of defined permutations, and thus 13507c478bd9Sstevel@tonic-gate * the following infrastructure exists to allow this variety and to select the 13517c478bd9Sstevel@tonic-gate * required definition. 13527c478bd9Sstevel@tonic-gate * 13537c478bd9Sstevel@tonic-gate * Environment variables can be defined as 32- or 64-bit specific, and if so 13547c478bd9Sstevel@tonic-gate * they will take precedence over any instruction set neutral form. Typically 13557c478bd9Sstevel@tonic-gate * this is only useful when the environment value is an informational string. 13567c478bd9Sstevel@tonic-gate * 13577c478bd9Sstevel@tonic-gate * Environment variables may be obtained from the standard user environment or 13587c478bd9Sstevel@tonic-gate * from a configuration file. The latter provides a fallback if no user 13597c478bd9Sstevel@tonic-gate * environment setting is found, and can take two forms: 13607c478bd9Sstevel@tonic-gate * 13617c478bd9Sstevel@tonic-gate * . a replaceable definition - this will be used if no user environment 13627c478bd9Sstevel@tonic-gate * setting has been seen, or 13637c478bd9Sstevel@tonic-gate * 13647c478bd9Sstevel@tonic-gate * . an permanent definition - this will be used no matter what user 13657c478bd9Sstevel@tonic-gate * environment setting is seen. In the case of list variables it will be 13667c478bd9Sstevel@tonic-gate * appended to any process environment setting seen. 13677c478bd9Sstevel@tonic-gate * 13687c478bd9Sstevel@tonic-gate * Environment variables can be defined without a value (ie. LD_XXXX=) so as to 13697c478bd9Sstevel@tonic-gate * override any replaceable environment variables from a configuration file. 13707c478bd9Sstevel@tonic-gate */ 13717c478bd9Sstevel@tonic-gate static u_longlong_t rplgen; /* replaceable generic */ 13727c478bd9Sstevel@tonic-gate /* variables */ 13737c478bd9Sstevel@tonic-gate static u_longlong_t rplisa; /* replaceable ISA specific */ 13747c478bd9Sstevel@tonic-gate /* variables */ 13757c478bd9Sstevel@tonic-gate static u_longlong_t prmgen; /* permanent generic */ 13767c478bd9Sstevel@tonic-gate /* variables */ 13777c478bd9Sstevel@tonic-gate static u_longlong_t prmisa; /* permanent ISA specific */ 13787c478bd9Sstevel@tonic-gate /* variables */ 13797c478bd9Sstevel@tonic-gate 13807c478bd9Sstevel@tonic-gate /* 13817c478bd9Sstevel@tonic-gate * Classify an environment variables type. 13827c478bd9Sstevel@tonic-gate */ 13837c478bd9Sstevel@tonic-gate #define ENV_TYP_IGNORE 0x1 /* ignore - variable is for */ 13847c478bd9Sstevel@tonic-gate /* the wrong ISA */ 13857c478bd9Sstevel@tonic-gate #define ENV_TYP_ISA 0x2 /* variable is ISA specific */ 13867c478bd9Sstevel@tonic-gate #define ENV_TYP_CONFIG 0x4 /* variable obtained from a */ 13877c478bd9Sstevel@tonic-gate /* config file */ 13887c478bd9Sstevel@tonic-gate #define ENV_TYP_PERMANT 0x8 /* variable is permanent */ 13897c478bd9Sstevel@tonic-gate 13907c478bd9Sstevel@tonic-gate /* 13917c478bd9Sstevel@tonic-gate * Identify all environment variables. 13927c478bd9Sstevel@tonic-gate */ 13937c478bd9Sstevel@tonic-gate #define ENV_FLG_AUDIT 0x0000000001ULL 13947c478bd9Sstevel@tonic-gate #define ENV_FLG_AUDIT_ARGS 0x0000000002ULL 13957c478bd9Sstevel@tonic-gate #define ENV_FLG_BIND_NOW 0x0000000004ULL 13967c478bd9Sstevel@tonic-gate #define ENV_FLG_BIND_NOT 0x0000000008ULL 13977c478bd9Sstevel@tonic-gate #define ENV_FLG_BINDINGS 0x0000000010ULL 13987c478bd9Sstevel@tonic-gate #define ENV_FLG_CONCURRENCY 0x0000000020ULL 13997c478bd9Sstevel@tonic-gate #define ENV_FLG_CONFGEN 0x0000000040ULL 14007c478bd9Sstevel@tonic-gate #define ENV_FLG_CONFIG 0x0000000080ULL 14017c478bd9Sstevel@tonic-gate #define ENV_FLG_DEBUG 0x0000000100ULL 14027c478bd9Sstevel@tonic-gate #define ENV_FLG_DEBUG_OUTPUT 0x0000000200ULL 14037c478bd9Sstevel@tonic-gate #define ENV_FLG_DEMANGLE 0x0000000400ULL 14047c478bd9Sstevel@tonic-gate #define ENV_FLG_FLAGS 0x0000000800ULL 14057c478bd9Sstevel@tonic-gate #define ENV_FLG_INIT 0x0000001000ULL 14067c478bd9Sstevel@tonic-gate #define ENV_FLG_LIBPATH 0x0000002000ULL 14077c478bd9Sstevel@tonic-gate #define ENV_FLG_LOADAVAIL 0x0000004000ULL 14087c478bd9Sstevel@tonic-gate #define ENV_FLG_LOADFLTR 0x0000008000ULL 14097c478bd9Sstevel@tonic-gate #define ENV_FLG_NOAUDIT 0x0000010000ULL 14107c478bd9Sstevel@tonic-gate #define ENV_FLG_NOAUXFLTR 0x0000020000ULL 14117c478bd9Sstevel@tonic-gate #define ENV_FLG_NOBAPLT 0x0000040000ULL 14127c478bd9Sstevel@tonic-gate #define ENV_FLG_NOCONFIG 0x0000080000ULL 14137c478bd9Sstevel@tonic-gate #define ENV_FLG_NODIRCONFIG 0x0000100000ULL 14147c478bd9Sstevel@tonic-gate #define ENV_FLG_NODIRECT 0x0000200000ULL 14157c478bd9Sstevel@tonic-gate #define ENV_FLG_NOENVCONFIG 0x0000400000ULL 14167c478bd9Sstevel@tonic-gate #define ENV_FLG_NOLAZY 0x0000800000ULL 14177c478bd9Sstevel@tonic-gate #define ENV_FLG_NOOBJALTER 0x0001000000ULL 14187c478bd9Sstevel@tonic-gate #define ENV_FLG_NOVERSION 0x0002000000ULL 14197c478bd9Sstevel@tonic-gate #define ENV_FLG_PRELOAD 0x0004000000ULL 14207c478bd9Sstevel@tonic-gate #define ENV_FLG_PROFILE 0x0008000000ULL 14217c478bd9Sstevel@tonic-gate #define ENV_FLG_PROFILE_OUTPUT 0x0010000000ULL 14227c478bd9Sstevel@tonic-gate #define ENV_FLG_SIGNAL 0x0020000000ULL 14237c478bd9Sstevel@tonic-gate #define ENV_FLG_TRACE_OBJS 0x0040000000ULL 14247c478bd9Sstevel@tonic-gate #define ENV_FLG_TRACE_PTHS 0x0080000000ULL 14257c478bd9Sstevel@tonic-gate #define ENV_FLG_UNREF 0x0100000000ULL 14267c478bd9Sstevel@tonic-gate #define ENV_FLG_UNUSED 0x0200000000ULL 14277c478bd9Sstevel@tonic-gate #define ENV_FLG_VERBOSE 0x0400000000ULL 14287c478bd9Sstevel@tonic-gate #define ENV_FLG_WARN 0x0800000000ULL 14297c478bd9Sstevel@tonic-gate #define ENV_FLG_NOFLTCONFIG 0x1000000000ULL 1430dffec89cSrie #define ENV_FLG_BIND_LAZY 0x2000000000ULL 14317c478bd9Sstevel@tonic-gate 14327c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 14337c478bd9Sstevel@tonic-gate #define ENV_FLG_FIX_1 0x8000000000ULL 14347c478bd9Sstevel@tonic-gate #endif 14357c478bd9Sstevel@tonic-gate 14367c478bd9Sstevel@tonic-gate #define SEL_REPLACE 0x0001 14377c478bd9Sstevel@tonic-gate #define SEL_PERMANT 0x0002 14387c478bd9Sstevel@tonic-gate #define SEL_ACT_RT 0x0100 /* setting rtld_flags */ 14397c478bd9Sstevel@tonic-gate #define SEL_ACT_RT2 0x0200 /* setting rtld_flags2 */ 14407c478bd9Sstevel@tonic-gate #define SEL_ACT_STR 0x0400 /* setting string value */ 14417c478bd9Sstevel@tonic-gate #define SEL_ACT_LML 0x0800 /* setting lml_flags */ 14427c478bd9Sstevel@tonic-gate #define SEL_ACT_LMLT 0x1000 /* setting lml_tflags */ 14437c478bd9Sstevel@tonic-gate #define SEL_ACT_SPEC_1 0x2000 /* For FLG_{FLAGS, LIBPATH} */ 14447c478bd9Sstevel@tonic-gate #define SEL_ACT_SPEC_2 0x4000 /* need special handling */ 14457c478bd9Sstevel@tonic-gate 14467c478bd9Sstevel@tonic-gate /* 14477c478bd9Sstevel@tonic-gate * Pattern match an LD_XXXX environment variable. s1 points to the XXXX part 14487c478bd9Sstevel@tonic-gate * and len specifies its length (comparing a strings length before the string 14497c478bd9Sstevel@tonic-gate * itself speed things up). s2 points to the token itself which has already 14507c478bd9Sstevel@tonic-gate * had any leading white-space removed. 14517c478bd9Sstevel@tonic-gate */ 14527c478bd9Sstevel@tonic-gate static void 14537c478bd9Sstevel@tonic-gate ld_generic_env(const char *s1, size_t len, const char *s2, Word *lmflags, 14547c478bd9Sstevel@tonic-gate Word *lmtflags, uint_t env_flags, int aout) 14557c478bd9Sstevel@tonic-gate { 14567c478bd9Sstevel@tonic-gate u_longlong_t variable = 0; 14577c478bd9Sstevel@tonic-gate unsigned short select = 0; 14587c478bd9Sstevel@tonic-gate const char **str; 14597c478bd9Sstevel@tonic-gate Word val = 0; 14607c478bd9Sstevel@tonic-gate 14617c478bd9Sstevel@tonic-gate /* 14627c478bd9Sstevel@tonic-gate * Determine whether we're dealing with a replaceable or permanent 14637c478bd9Sstevel@tonic-gate * string. 14647c478bd9Sstevel@tonic-gate */ 14657c478bd9Sstevel@tonic-gate if (env_flags & ENV_TYP_PERMANT) { 14667c478bd9Sstevel@tonic-gate /* 14677c478bd9Sstevel@tonic-gate * If the string is from a configuration file and defined as 14687c478bd9Sstevel@tonic-gate * permanent, assign it as permanent. 14697c478bd9Sstevel@tonic-gate */ 14707c478bd9Sstevel@tonic-gate select |= SEL_PERMANT; 14717c478bd9Sstevel@tonic-gate } else 14727c478bd9Sstevel@tonic-gate select |= SEL_REPLACE; 14737c478bd9Sstevel@tonic-gate 14747c478bd9Sstevel@tonic-gate /* 14757c478bd9Sstevel@tonic-gate * Parse the variable given. 14767c478bd9Sstevel@tonic-gate * 14777c478bd9Sstevel@tonic-gate * The LD_AUDIT family. 14787c478bd9Sstevel@tonic-gate */ 14797c478bd9Sstevel@tonic-gate if (*s1 == 'A') { 14807c478bd9Sstevel@tonic-gate if ((len == MSG_LD_AUDIT_SIZE) && (strncmp(s1, 14817c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_AUDIT), MSG_LD_AUDIT_SIZE) == 0)) { 14827c478bd9Sstevel@tonic-gate /* 14837c478bd9Sstevel@tonic-gate * Replaceable and permanent audit objects can exist. 14847c478bd9Sstevel@tonic-gate */ 14857c478bd9Sstevel@tonic-gate select |= SEL_ACT_STR; 1486fa034d7fSseizo if (select & SEL_REPLACE) 1487fa034d7fSseizo str = &rpl_audit; 1488fa034d7fSseizo else { 1489fa034d7fSseizo str = &prm_audit; 1490fa034d7fSseizo rpl_audit = 0; 1491fa034d7fSseizo } 14927c478bd9Sstevel@tonic-gate variable = ENV_FLG_AUDIT; 14937c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_AUDIT_ARGS_SIZE) && 14947c478bd9Sstevel@tonic-gate (strncmp(s1, MSG_ORIG(MSG_LD_AUDIT_ARGS), 14957c478bd9Sstevel@tonic-gate MSG_LD_AUDIT_ARGS_SIZE) == 0)) { 14967c478bd9Sstevel@tonic-gate /* 14977c478bd9Sstevel@tonic-gate * A specialized variable for plt_exit() use, not 14987c478bd9Sstevel@tonic-gate * documented for general use. 14997c478bd9Sstevel@tonic-gate */ 15007c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 15017c478bd9Sstevel@tonic-gate variable = ENV_FLG_AUDIT_ARGS; 15027c478bd9Sstevel@tonic-gate } 15037c478bd9Sstevel@tonic-gate } 15047c478bd9Sstevel@tonic-gate /* 15057c478bd9Sstevel@tonic-gate * The LD_BIND family and LD_BREADTH (historic). 15067c478bd9Sstevel@tonic-gate */ 15077c478bd9Sstevel@tonic-gate else if (*s1 == 'B') { 1508dffec89cSrie if ((len == MSG_LD_BIND_LAZY_SIZE) && (strncmp(s1, 1509dffec89cSrie MSG_ORIG(MSG_LD_BIND_LAZY), 1510dffec89cSrie MSG_LD_BIND_LAZY_SIZE) == 0)) { 1511dffec89cSrie select |= SEL_ACT_RT2; 1512dffec89cSrie val = RT_FL2_BINDLAZY; 1513dffec89cSrie variable = ENV_FLG_BIND_LAZY; 1514dffec89cSrie } else if ((len == MSG_LD_BIND_NOW_SIZE) && (strncmp(s1, 15157c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_BIND_NOW), MSG_LD_BIND_NOW_SIZE) == 0)) { 15167c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT2; 15177c478bd9Sstevel@tonic-gate val = RT_FL2_BINDNOW; 15187c478bd9Sstevel@tonic-gate variable = ENV_FLG_BIND_NOW; 15197c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_BIND_NOT_SIZE) && (strncmp(s1, 15207c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_BIND_NOT), MSG_LD_BIND_NOT_SIZE) == 0)) { 15217c478bd9Sstevel@tonic-gate /* 15227c478bd9Sstevel@tonic-gate * Another trick, enabled to help debug AOUT 15237c478bd9Sstevel@tonic-gate * applications under BCP, but not documented for 15247c478bd9Sstevel@tonic-gate * general use. 15257c478bd9Sstevel@tonic-gate */ 15267c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 15277c478bd9Sstevel@tonic-gate val = RT_FL_NOBIND; 15287c478bd9Sstevel@tonic-gate variable = ENV_FLG_BIND_NOT; 15297c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_BINDINGS_SIZE) && (strncmp(s1, 15307c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_BINDINGS), MSG_LD_BINDINGS_SIZE) == 0)) { 15317c478bd9Sstevel@tonic-gate /* 15327c478bd9Sstevel@tonic-gate * This variable is simply for backward compatibility. 15337c478bd9Sstevel@tonic-gate * If this and LD_DEBUG are both specified, only one of 15347c478bd9Sstevel@tonic-gate * the strings is going to get processed. 15357c478bd9Sstevel@tonic-gate */ 15367c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 15377c478bd9Sstevel@tonic-gate variable = ENV_FLG_BINDINGS; 15387c478bd9Sstevel@tonic-gate #ifndef LD_BREADTH_DISABLED 15397c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_BREADTH_SIZE) && (strncmp(s1, 15407c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_BREADTH), MSG_LD_BREADTH_SIZE) == 0)) { 15417c478bd9Sstevel@tonic-gate /* 15427c478bd9Sstevel@tonic-gate * Besides some old patches this is no longer available. 15437c478bd9Sstevel@tonic-gate */ 15447c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_BREADTH; 15457c478bd9Sstevel@tonic-gate return; 15467c478bd9Sstevel@tonic-gate #endif 15477c478bd9Sstevel@tonic-gate } 15487c478bd9Sstevel@tonic-gate } 15497c478bd9Sstevel@tonic-gate /* 15507c478bd9Sstevel@tonic-gate * LD_CONCURRENCY and LD_CONFIG family. 15517c478bd9Sstevel@tonic-gate */ 15527c478bd9Sstevel@tonic-gate else if (*s1 == 'C') { 15537c478bd9Sstevel@tonic-gate if ((len == MSG_LD_CONCURRENCY_SIZE) && (strncmp(s1, 15547c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_CONCURRENCY), 15557c478bd9Sstevel@tonic-gate MSG_LD_CONCURRENCY_SIZE) == 0)) { 15567c478bd9Sstevel@tonic-gate /* 15577c478bd9Sstevel@tonic-gate * Waiting in the wings, as concurrency checking isn't 15587c478bd9Sstevel@tonic-gate * yet enabled. 15597c478bd9Sstevel@tonic-gate */ 15607c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 15617c478bd9Sstevel@tonic-gate variable = ENV_FLG_CONCURRENCY; 15627c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_CONFGEN_SIZE) && (strncmp(s1, 15637c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_CONFGEN), MSG_LD_CONFGEN_SIZE) == 0)) { 15647c478bd9Sstevel@tonic-gate /* 15657c478bd9Sstevel@tonic-gate * Set by crle(1) to indicate it's building a 15667c478bd9Sstevel@tonic-gate * configuration file, not documented for general use. 15677c478bd9Sstevel@tonic-gate */ 15687c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 15697c478bd9Sstevel@tonic-gate variable = ENV_FLG_CONFGEN; 15707c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_CONFIG_SIZE) && (strncmp(s1, 15717c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_CONFIG), MSG_LD_CONFIG_SIZE) == 0)) { 15727c478bd9Sstevel@tonic-gate /* 15737c478bd9Sstevel@tonic-gate * Secure applications must use a default configuration 15747c478bd9Sstevel@tonic-gate * file. A setting from a configuration file doesn't 15757c478bd9Sstevel@tonic-gate * make sense (given we must be reading a configuration 15767c478bd9Sstevel@tonic-gate * file to have gotten this). 15777c478bd9Sstevel@tonic-gate */ 15787c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SECURE) || 15797c478bd9Sstevel@tonic-gate (env_flags & ENV_TYP_CONFIG)) 15807c478bd9Sstevel@tonic-gate return; 15817c478bd9Sstevel@tonic-gate select |= SEL_ACT_STR; 15827c478bd9Sstevel@tonic-gate str = &config->c_name; 15837c478bd9Sstevel@tonic-gate variable = ENV_FLG_CONFIG; 15847c478bd9Sstevel@tonic-gate } 15857c478bd9Sstevel@tonic-gate } 15867c478bd9Sstevel@tonic-gate /* 15877c478bd9Sstevel@tonic-gate * The LD_DEBUG family and LD_DEMANGLE. 15887c478bd9Sstevel@tonic-gate */ 15897c478bd9Sstevel@tonic-gate else if (*s1 == 'D') { 15907c478bd9Sstevel@tonic-gate if ((len == MSG_LD_DEBUG_SIZE) && (strncmp(s1, 15917c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_DEBUG), MSG_LD_DEBUG_SIZE) == 0)) { 15927c478bd9Sstevel@tonic-gate select |= SEL_ACT_STR; 1593fa034d7fSseizo if (select & SEL_REPLACE) 1594fa034d7fSseizo str = &rpl_debug; 1595fa034d7fSseizo else { 1596fa034d7fSseizo str = &prm_debug; 1597fa034d7fSseizo rpl_debug = 0; 1598fa034d7fSseizo } 15997c478bd9Sstevel@tonic-gate variable = ENV_FLG_DEBUG; 16007c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_DEBUG_OUTPUT_SIZE) && (strncmp(s1, 16017c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_DEBUG_OUTPUT), 16027c478bd9Sstevel@tonic-gate MSG_LD_DEBUG_OUTPUT_SIZE) == 0)) { 16037c478bd9Sstevel@tonic-gate select |= SEL_ACT_STR; 16047c478bd9Sstevel@tonic-gate str = &dbg_file; 16057c478bd9Sstevel@tonic-gate variable = ENV_FLG_DEBUG_OUTPUT; 16067c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_DEMANGLE_SIZE) && (strncmp(s1, 16077c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_DEMANGLE), MSG_LD_DEMANGLE_SIZE) == 0)) { 16087c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 16097c478bd9Sstevel@tonic-gate val = RT_FL_DEMANGLE; 16107c478bd9Sstevel@tonic-gate variable = ENV_FLG_DEMANGLE; 16117c478bd9Sstevel@tonic-gate } 16127c478bd9Sstevel@tonic-gate } 16137c478bd9Sstevel@tonic-gate /* 16147c478bd9Sstevel@tonic-gate * LD_FLAGS - collect the best variable definition. On completion of 16157c478bd9Sstevel@tonic-gate * environment variable processing pass the result to ld_flags_env() 16167c478bd9Sstevel@tonic-gate * where they'll be decomposed and passed back to this routine. 16177c478bd9Sstevel@tonic-gate */ 16187c478bd9Sstevel@tonic-gate else if (*s1 == 'F') { 16197c478bd9Sstevel@tonic-gate if ((len == MSG_LD_FLAGS_SIZE) && (strncmp(s1, 16207c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_FLAGS), MSG_LD_FLAGS_SIZE) == 0)) { 16217c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_1; 1622fa034d7fSseizo if (select & SEL_REPLACE) 1623fa034d7fSseizo str = &rpl_ldflags; 1624fa034d7fSseizo else { 1625fa034d7fSseizo str = &prm_ldflags; 1626fa034d7fSseizo rpl_ldflags = 0; 1627fa034d7fSseizo } 16287c478bd9Sstevel@tonic-gate variable = ENV_FLG_FLAGS; 16297c478bd9Sstevel@tonic-gate } 16307c478bd9Sstevel@tonic-gate } 16317c478bd9Sstevel@tonic-gate /* 16327c478bd9Sstevel@tonic-gate * LD_INIT (internal, used by ldd(1)). 16337c478bd9Sstevel@tonic-gate */ 16347c478bd9Sstevel@tonic-gate else if (*s1 == 'I') { 16357c478bd9Sstevel@tonic-gate if ((len == MSG_LD_INIT_SIZE) && (strncmp(s1, 16367c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_INIT), MSG_LD_INIT_SIZE) == 0)) { 16377c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 16387c478bd9Sstevel@tonic-gate val = LML_FLG_TRC_INIT; 16397c478bd9Sstevel@tonic-gate variable = ENV_FLG_INIT; 16407c478bd9Sstevel@tonic-gate } 16417c478bd9Sstevel@tonic-gate } 16427c478bd9Sstevel@tonic-gate /* 16437c478bd9Sstevel@tonic-gate * The LD_LIBRARY_PATH and LD_LOAD families. 16447c478bd9Sstevel@tonic-gate */ 16457c478bd9Sstevel@tonic-gate else if (*s1 == 'L') { 16467c478bd9Sstevel@tonic-gate if ((len == MSG_LD_LIBPATH_SIZE) && (strncmp(s1, 16477c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_LIBPATH), MSG_LD_LIBPATH_SIZE) == 0)) { 16487c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_1; 1649fa034d7fSseizo if (select & SEL_REPLACE) 1650fa034d7fSseizo str = &rpl_libpath; 1651fa034d7fSseizo else { 1652fa034d7fSseizo str = &prm_libpath; 1653fa034d7fSseizo rpl_libpath = 0; 1654fa034d7fSseizo } 16557c478bd9Sstevel@tonic-gate variable = ENV_FLG_LIBPATH; 16567c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_LOADAVAIL_SIZE) && (strncmp(s1, 16577c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_LOADAVAIL), MSG_LD_LOADAVAIL_SIZE) == 0)) { 16587c478bd9Sstevel@tonic-gate /* 16597c478bd9Sstevel@tonic-gate * Internal use by crle(1), not documented for general 16607c478bd9Sstevel@tonic-gate * use. 16617c478bd9Sstevel@tonic-gate */ 16627c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 16637c478bd9Sstevel@tonic-gate val = LML_FLG_LOADAVAIL; 16647c478bd9Sstevel@tonic-gate variable = ENV_FLG_LOADAVAIL; 16657c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_LOADFLTR_SIZE) && (strncmp(s1, 16667c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_LOADFLTR), MSG_LD_LOADFLTR_SIZE) == 0)) { 16677c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 16687c478bd9Sstevel@tonic-gate variable = ENV_FLG_LOADFLTR; 16697c478bd9Sstevel@tonic-gate } 16707c478bd9Sstevel@tonic-gate } 16717c478bd9Sstevel@tonic-gate /* 16727c478bd9Sstevel@tonic-gate * The LD_NO family. 16737c478bd9Sstevel@tonic-gate */ 16747c478bd9Sstevel@tonic-gate else if (*s1 == 'N') { 16757c478bd9Sstevel@tonic-gate if ((len == MSG_LD_NOAUDIT_SIZE) && (strncmp(s1, 16767c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOAUDIT), MSG_LD_NOAUDIT_SIZE) == 0)) { 16777c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 16787c478bd9Sstevel@tonic-gate val = RT_FL_NOAUDIT; 16797c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOAUDIT; 16807c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOAUXFLTR_SIZE) && (strncmp(s1, 16817c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOAUXFLTR), MSG_LD_NOAUXFLTR_SIZE) == 0)) { 16827c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 16837c478bd9Sstevel@tonic-gate val = RT_FL_NOAUXFLTR; 16847c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOAUXFLTR; 16857c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOBAPLT_SIZE) && (strncmp(s1, 16867c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOBAPLT), MSG_LD_NOBAPLT_SIZE) == 0)) { 16877c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 16887c478bd9Sstevel@tonic-gate val = RT_FL_NOBAPLT; 16897c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOBAPLT; 16907c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOCONFIG_SIZE) && (strncmp(s1, 16917c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOCONFIG), MSG_LD_NOCONFIG_SIZE) == 0)) { 16927c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 16937c478bd9Sstevel@tonic-gate val = RT_FL_NOCFG; 16947c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOCONFIG; 16957c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NODIRCONFIG_SIZE) && (strncmp(s1, 16967c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NODIRCONFIG), 16977c478bd9Sstevel@tonic-gate MSG_LD_NODIRCONFIG_SIZE) == 0)) { 16987c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 16997c478bd9Sstevel@tonic-gate val = RT_FL_NODIRCFG; 17007c478bd9Sstevel@tonic-gate variable = ENV_FLG_NODIRCONFIG; 17017c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NODIRECT_SIZE) && (strncmp(s1, 17027c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NODIRECT), MSG_LD_NODIRECT_SIZE) == 0)) { 17037c478bd9Sstevel@tonic-gate select |= SEL_ACT_LMLT; 17047c478bd9Sstevel@tonic-gate val = LML_TFLG_NODIRECT; 17057c478bd9Sstevel@tonic-gate variable = ENV_FLG_NODIRECT; 17067c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOENVCONFIG_SIZE) && (strncmp(s1, 17077c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOENVCONFIG), 17087c478bd9Sstevel@tonic-gate MSG_LD_NOENVCONFIG_SIZE) == 0)) { 17097c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 17107c478bd9Sstevel@tonic-gate val = RT_FL_NOENVCFG; 17117c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOENVCONFIG; 17127c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOFLTCONFIG_SIZE) && (strncmp(s1, 17137c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOFLTCONFIG), 17147c478bd9Sstevel@tonic-gate MSG_LD_NOFLTCONFIG_SIZE) == 0)) { 17157c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT2; 17167c478bd9Sstevel@tonic-gate val = RT_FL2_NOFLTCFG; 17177c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOFLTCONFIG; 17187c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOLAZY_SIZE) && (strncmp(s1, 17197c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOLAZY), MSG_LD_NOLAZY_SIZE) == 0)) { 17207c478bd9Sstevel@tonic-gate select |= SEL_ACT_LMLT; 17217c478bd9Sstevel@tonic-gate val = LML_TFLG_NOLAZYLD; 17227c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOLAZY; 17237c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOOBJALTER_SIZE) && (strncmp(s1, 17247c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOOBJALTER), 17257c478bd9Sstevel@tonic-gate MSG_LD_NOOBJALTER_SIZE) == 0)) { 17267c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 17277c478bd9Sstevel@tonic-gate val = RT_FL_NOOBJALT; 17287c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOOBJALTER; 17297c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_NOVERSION_SIZE) && (strncmp(s1, 17307c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_NOVERSION), MSG_LD_NOVERSION_SIZE) == 0)) { 17317c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 17327c478bd9Sstevel@tonic-gate val = RT_FL_NOVERSION; 17337c478bd9Sstevel@tonic-gate variable = ENV_FLG_NOVERSION; 17347c478bd9Sstevel@tonic-gate } 17357c478bd9Sstevel@tonic-gate } 17367c478bd9Sstevel@tonic-gate /* 17377c478bd9Sstevel@tonic-gate * LD_ORIGIN. 17387c478bd9Sstevel@tonic-gate */ 17397c478bd9Sstevel@tonic-gate else if (*s1 == 'O') { 17407c478bd9Sstevel@tonic-gate #ifndef EXPAND_RELATIVE 17417c478bd9Sstevel@tonic-gate if ((len == MSG_LD_ORIGIN_SIZE) && (strncmp(s1, 17427c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_ORIGIN), MSG_LD_ORIGIN_SIZE) == 0)) { 17437c478bd9Sstevel@tonic-gate /* 17447c478bd9Sstevel@tonic-gate * Besides some old patches this is no longer required. 17457c478bd9Sstevel@tonic-gate */ 17467c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_RELATIVE; 17477c478bd9Sstevel@tonic-gate } 17487c478bd9Sstevel@tonic-gate #endif 17497c478bd9Sstevel@tonic-gate return; 17507c478bd9Sstevel@tonic-gate } 17517c478bd9Sstevel@tonic-gate /* 17527c478bd9Sstevel@tonic-gate * LD_PRELOAD and LD_PROFILE family. 17537c478bd9Sstevel@tonic-gate */ 17547c478bd9Sstevel@tonic-gate else if (*s1 == 'P') { 17557c478bd9Sstevel@tonic-gate if ((len == MSG_LD_PRELOAD_SIZE) && (strncmp(s1, 17567c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_PRELOAD), MSG_LD_PRELOAD_SIZE) == 0)) { 17577c478bd9Sstevel@tonic-gate select |= SEL_ACT_STR; 1758fa034d7fSseizo if (select & SEL_REPLACE) 1759fa034d7fSseizo str = &rpl_preload; 1760fa034d7fSseizo else { 1761fa034d7fSseizo str = &prm_preload; 1762fa034d7fSseizo rpl_preload = 0; 1763fa034d7fSseizo } 17647c478bd9Sstevel@tonic-gate variable = ENV_FLG_PRELOAD; 17657c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_PROFILE_SIZE) && (strncmp(s1, 17667c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_PROFILE), MSG_LD_PROFILE_SIZE) == 0)) { 17677c478bd9Sstevel@tonic-gate /* 17687c478bd9Sstevel@tonic-gate * Only one user library can be profiled at a time. 17697c478bd9Sstevel@tonic-gate */ 17707c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 17717c478bd9Sstevel@tonic-gate variable = ENV_FLG_PROFILE; 17727c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_PROFILE_OUTPUT_SIZE) && (strncmp(s1, 17737c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_PROFILE_OUTPUT), 17747c478bd9Sstevel@tonic-gate MSG_LD_PROFILE_OUTPUT_SIZE) == 0)) { 17757c478bd9Sstevel@tonic-gate /* 17767c478bd9Sstevel@tonic-gate * Only one user library can be profiled at a time. 17777c478bd9Sstevel@tonic-gate */ 17787c478bd9Sstevel@tonic-gate select |= SEL_ACT_STR; 17797c478bd9Sstevel@tonic-gate str = &profile_out; 17807c478bd9Sstevel@tonic-gate variable = ENV_FLG_PROFILE_OUTPUT; 17817c478bd9Sstevel@tonic-gate } 17827c478bd9Sstevel@tonic-gate } 17837c478bd9Sstevel@tonic-gate /* 17847c478bd9Sstevel@tonic-gate * LD_SIGNAL. 17857c478bd9Sstevel@tonic-gate */ 17867c478bd9Sstevel@tonic-gate else if (*s1 == 'S') { 17877c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_SECURE) 17887c478bd9Sstevel@tonic-gate return; 17897c478bd9Sstevel@tonic-gate if ((len == MSG_LD_SIGNAL_SIZE) && 17907c478bd9Sstevel@tonic-gate (strncmp(s1, MSG_ORIG(MSG_LD_SIGNAL), 17917c478bd9Sstevel@tonic-gate MSG_LD_SIGNAL_SIZE) == 0)) { 17927c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 17937c478bd9Sstevel@tonic-gate variable = ENV_FLG_SIGNAL; 17947c478bd9Sstevel@tonic-gate } 17957c478bd9Sstevel@tonic-gate } 17967c478bd9Sstevel@tonic-gate /* 17977c478bd9Sstevel@tonic-gate * The LD_TRACE family (internal, used by ldd(1)). 17987c478bd9Sstevel@tonic-gate */ 17997c478bd9Sstevel@tonic-gate else if (*s1 == 'T') { 18007c478bd9Sstevel@tonic-gate if (((len == MSG_LD_TRACE_OBJS_SIZE) && 18017c478bd9Sstevel@tonic-gate (strncmp(s1, MSG_ORIG(MSG_LD_TRACE_OBJS), 18027c478bd9Sstevel@tonic-gate MSG_LD_TRACE_OBJS_SIZE) == 0)) || 18037c478bd9Sstevel@tonic-gate ((len == MSG_LD_TRACE_OBJS_E_SIZE) && 18047c478bd9Sstevel@tonic-gate (((strncmp(s1, MSG_ORIG(MSG_LD_TRACE_OBJS_E), 18057c478bd9Sstevel@tonic-gate MSG_LD_TRACE_OBJS_E_SIZE) == 0) && !aout) || 18067c478bd9Sstevel@tonic-gate ((strncmp(s1, MSG_ORIG(MSG_LD_TRACE_OBJS_A), 18077c478bd9Sstevel@tonic-gate MSG_LD_TRACE_OBJS_A_SIZE) == 0) && aout)))) { 18087c478bd9Sstevel@tonic-gate select |= SEL_ACT_SPEC_2; 18097c478bd9Sstevel@tonic-gate variable = ENV_FLG_TRACE_OBJS; 18107c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_TRACE_PTHS_SIZE) && (strncmp(s1, 18117c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_TRACE_PTHS), 18127c478bd9Sstevel@tonic-gate MSG_LD_TRACE_PTHS_SIZE) == 0)) { 18137c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 18147c478bd9Sstevel@tonic-gate val = LML_FLG_TRC_SEARCH; 18157c478bd9Sstevel@tonic-gate variable = ENV_FLG_TRACE_PTHS; 18167c478bd9Sstevel@tonic-gate } 18177c478bd9Sstevel@tonic-gate } 18187c478bd9Sstevel@tonic-gate /* 18197c478bd9Sstevel@tonic-gate * LD_UNREF and LD_UNUSED (internal, used by ldd(1)). 18207c478bd9Sstevel@tonic-gate */ 18217c478bd9Sstevel@tonic-gate else if (*s1 == 'U') { 18227c478bd9Sstevel@tonic-gate if ((len == MSG_LD_UNREF_SIZE) && (strncmp(s1, 18237c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_UNREF), MSG_LD_UNREF_SIZE) == 0)) { 18247c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 18257c478bd9Sstevel@tonic-gate val = LML_FLG_TRC_UNREF; 18267c478bd9Sstevel@tonic-gate variable = ENV_FLG_UNREF; 18277c478bd9Sstevel@tonic-gate } else if ((len == MSG_LD_UNUSED_SIZE) && (strncmp(s1, 18287c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_UNUSED), MSG_LD_UNUSED_SIZE) == 0)) { 18297c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 18307c478bd9Sstevel@tonic-gate val = LML_FLG_TRC_UNUSED; 18317c478bd9Sstevel@tonic-gate variable = ENV_FLG_UNUSED; 18327c478bd9Sstevel@tonic-gate } 18337c478bd9Sstevel@tonic-gate } 18347c478bd9Sstevel@tonic-gate /* 18357c478bd9Sstevel@tonic-gate * LD_VERBOSE (internal, used by ldd(1)). 18367c478bd9Sstevel@tonic-gate */ 18377c478bd9Sstevel@tonic-gate else if (*s1 == 'V') { 18387c478bd9Sstevel@tonic-gate if ((len == MSG_LD_VERBOSE_SIZE) && (strncmp(s1, 18397c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_VERBOSE), MSG_LD_VERBOSE_SIZE) == 0)) { 18407c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 18417c478bd9Sstevel@tonic-gate val = LML_FLG_TRC_VERBOSE; 18427c478bd9Sstevel@tonic-gate variable = ENV_FLG_VERBOSE; 18437c478bd9Sstevel@tonic-gate } 18447c478bd9Sstevel@tonic-gate } 18457c478bd9Sstevel@tonic-gate /* 18467c478bd9Sstevel@tonic-gate * LD_WARN (internal, used by ldd(1)). 18477c478bd9Sstevel@tonic-gate */ 18487c478bd9Sstevel@tonic-gate else if (*s1 == 'W') { 18497c478bd9Sstevel@tonic-gate if ((len == MSG_LD_WARN_SIZE) && (strncmp(s1, 18507c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_WARN), MSG_LD_WARN_SIZE) == 0)) { 18517c478bd9Sstevel@tonic-gate select |= SEL_ACT_LML; 18527c478bd9Sstevel@tonic-gate val = LML_FLG_TRC_WARN; 18537c478bd9Sstevel@tonic-gate variable = ENV_FLG_WARN; 18547c478bd9Sstevel@tonic-gate } 18557c478bd9Sstevel@tonic-gate #ifdef SIEBEL_DISABLE 18567c478bd9Sstevel@tonic-gate } 18577c478bd9Sstevel@tonic-gate /* 18587c478bd9Sstevel@tonic-gate * LD__FIX__ (undocumented, enable future technology that can't be 18597c478bd9Sstevel@tonic-gate * delivered in a patch release). 18607c478bd9Sstevel@tonic-gate */ 18617c478bd9Sstevel@tonic-gate else if (*s1 == '_') { 18627c478bd9Sstevel@tonic-gate if ((len == MSG_LD_FIX_1_SIZE) && (strncmp(s1, 18637c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_LD_FIX_1), MSG_LD_FIX_1_SIZE) == 0)) { 18647c478bd9Sstevel@tonic-gate select |= SEL_ACT_RT; 18657c478bd9Sstevel@tonic-gate val = RT_FL_DISFIX_1; 18667c478bd9Sstevel@tonic-gate variable = ENV_FLG_FIX_1; 18677c478bd9Sstevel@tonic-gate } 18687c478bd9Sstevel@tonic-gate #endif 18697c478bd9Sstevel@tonic-gate } 18707c478bd9Sstevel@tonic-gate if (variable == 0) 18717c478bd9Sstevel@tonic-gate return; 18727c478bd9Sstevel@tonic-gate 18737c478bd9Sstevel@tonic-gate /* 18747c478bd9Sstevel@tonic-gate * If the variable is already processed with ISA specific variable, 18757c478bd9Sstevel@tonic-gate * no further processing needed. 18767c478bd9Sstevel@tonic-gate */ 18777c478bd9Sstevel@tonic-gate if (((select & SEL_REPLACE) && (rplisa & variable)) || 18787c478bd9Sstevel@tonic-gate ((select & SEL_PERMANT) && (prmisa & variable))) 18797c478bd9Sstevel@tonic-gate return; 18807c478bd9Sstevel@tonic-gate 18817c478bd9Sstevel@tonic-gate /* 1882fa034d7fSseizo * Now mark the appropriate variables. 1883fa034d7fSseizo * If the replaceable variable is already set, then the 1884fa034d7fSseizo * process environment variable must be set. Any replaceable 1885fa034d7fSseizo * variable specified in a configuration file can be ignored. 18867c478bd9Sstevel@tonic-gate */ 18877c478bd9Sstevel@tonic-gate if (env_flags & ENV_TYP_ISA) { 18887c478bd9Sstevel@tonic-gate /* 18897c478bd9Sstevel@tonic-gate * This is ISA setting. We do the setting 18907c478bd9Sstevel@tonic-gate * even if s2 is NULL. 18917c478bd9Sstevel@tonic-gate * If s2 is NULL, we might need to undo 18927c478bd9Sstevel@tonic-gate * the setting. 18937c478bd9Sstevel@tonic-gate */ 18947c478bd9Sstevel@tonic-gate if (select & SEL_REPLACE) { 1895fa034d7fSseizo if (rplisa & variable) 1896fa034d7fSseizo return; 18977c478bd9Sstevel@tonic-gate rplisa |= variable; 18987c478bd9Sstevel@tonic-gate } else { 18997c478bd9Sstevel@tonic-gate prmisa |= variable; 19007c478bd9Sstevel@tonic-gate } 19017c478bd9Sstevel@tonic-gate } else if (s2) { 19027c478bd9Sstevel@tonic-gate /* 19037c478bd9Sstevel@tonic-gate * This is non0-ISA setting 19047c478bd9Sstevel@tonic-gate */ 19057c478bd9Sstevel@tonic-gate if (select & SEL_REPLACE) { 1906fa034d7fSseizo if (rplgen & variable) 1907fa034d7fSseizo return; 19087c478bd9Sstevel@tonic-gate rplgen |= variable; 19097c478bd9Sstevel@tonic-gate } else 19107c478bd9Sstevel@tonic-gate prmgen |= variable; 19117c478bd9Sstevel@tonic-gate } else 19127c478bd9Sstevel@tonic-gate /* 19137c478bd9Sstevel@tonic-gate * This is non-ISA setting which 19147c478bd9Sstevel@tonic-gate * can be ignored. 19157c478bd9Sstevel@tonic-gate */ 19167c478bd9Sstevel@tonic-gate return; 19177c478bd9Sstevel@tonic-gate 19187c478bd9Sstevel@tonic-gate /* 19197c478bd9Sstevel@tonic-gate * Now perform the setting. 19207c478bd9Sstevel@tonic-gate */ 19217c478bd9Sstevel@tonic-gate if (select & SEL_ACT_RT) { 19227c478bd9Sstevel@tonic-gate if (s2) 19237c478bd9Sstevel@tonic-gate rtld_flags |= val; 19247c478bd9Sstevel@tonic-gate else 19257c478bd9Sstevel@tonic-gate rtld_flags &= ~val; 19267c478bd9Sstevel@tonic-gate } else if (select & SEL_ACT_RT2) { 19277c478bd9Sstevel@tonic-gate if (s2) 19287c478bd9Sstevel@tonic-gate rtld_flags2 |= val; 19297c478bd9Sstevel@tonic-gate else 19307c478bd9Sstevel@tonic-gate rtld_flags2 &= ~val; 19317c478bd9Sstevel@tonic-gate } else if (select & SEL_ACT_STR) 19327c478bd9Sstevel@tonic-gate *str = s2; 19337c478bd9Sstevel@tonic-gate else if (select & SEL_ACT_LML) { 19347c478bd9Sstevel@tonic-gate if (s2) 19357c478bd9Sstevel@tonic-gate *lmflags |= val; 19367c478bd9Sstevel@tonic-gate else 19377c478bd9Sstevel@tonic-gate *lmflags &= ~val; 19387c478bd9Sstevel@tonic-gate } else if (select & SEL_ACT_LMLT) { 19397c478bd9Sstevel@tonic-gate if (s2) 19407c478bd9Sstevel@tonic-gate *lmtflags |= val; 19417c478bd9Sstevel@tonic-gate else 19427c478bd9Sstevel@tonic-gate *lmtflags &= ~val; 19437c478bd9Sstevel@tonic-gate } else if (select & SEL_ACT_SPEC_1) { 19447c478bd9Sstevel@tonic-gate /* 19457c478bd9Sstevel@tonic-gate * variable is either ENV_FLG_FLAGS or ENV_FLG_LIBPATH 19467c478bd9Sstevel@tonic-gate */ 19477c478bd9Sstevel@tonic-gate *str = s2; 19487c478bd9Sstevel@tonic-gate if ((select & SEL_REPLACE) && (env_flags & ENV_TYP_CONFIG)) { 19497c478bd9Sstevel@tonic-gate if (s2) { 19507c478bd9Sstevel@tonic-gate if (variable == ENV_FLG_FLAGS) 19517c478bd9Sstevel@tonic-gate env_info |= ENV_INF_FLAGCFG; 19527c478bd9Sstevel@tonic-gate else 19537c478bd9Sstevel@tonic-gate env_info |= ENV_INF_PATHCFG; 19547c478bd9Sstevel@tonic-gate } else { 19557c478bd9Sstevel@tonic-gate if (variable == ENV_FLG_FLAGS) 19567c478bd9Sstevel@tonic-gate env_info &= ~ENV_INF_FLAGCFG; 19577c478bd9Sstevel@tonic-gate else 19587c478bd9Sstevel@tonic-gate env_info &= ~ENV_INF_PATHCFG; 19597c478bd9Sstevel@tonic-gate } 19607c478bd9Sstevel@tonic-gate } 19617c478bd9Sstevel@tonic-gate } else if (select & SEL_ACT_SPEC_2) { 19627c478bd9Sstevel@tonic-gate /* 19637c478bd9Sstevel@tonic-gate * variables can be: ENV_FLG_ 19647c478bd9Sstevel@tonic-gate * AUDIT_ARGS, BINDING, CONCURRENCY, CONFGEN, 19657c478bd9Sstevel@tonic-gate * LOADFLTR, PROFILE, SIGNAL, TRACE_OBJS 19667c478bd9Sstevel@tonic-gate */ 19677c478bd9Sstevel@tonic-gate if (variable == ENV_FLG_AUDIT_ARGS) { 19687c478bd9Sstevel@tonic-gate if (s2) { 19697c478bd9Sstevel@tonic-gate audit_argcnt = atoi(s2); 19707c478bd9Sstevel@tonic-gate audit_argcnt += audit_argcnt % 2; 19717c478bd9Sstevel@tonic-gate } else 19727c478bd9Sstevel@tonic-gate audit_argcnt = 0; 19737c478bd9Sstevel@tonic-gate } else if (variable == ENV_FLG_BINDINGS) { 19747c478bd9Sstevel@tonic-gate if (s2) 19757c478bd9Sstevel@tonic-gate rpl_debug = MSG_ORIG(MSG_TKN_BINDINGS); 19767c478bd9Sstevel@tonic-gate else 19777c478bd9Sstevel@tonic-gate rpl_debug = 0; 19787c478bd9Sstevel@tonic-gate } else if (variable == ENV_FLG_CONCURRENCY) { 19797c478bd9Sstevel@tonic-gate if (s2) 19807c478bd9Sstevel@tonic-gate rtld_flags &= ~RT_FL_NOCONCUR; 19817c478bd9Sstevel@tonic-gate else 19827c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_NOCONCUR; 19837c478bd9Sstevel@tonic-gate } else if (variable == ENV_FLG_CONFGEN) { 19847c478bd9Sstevel@tonic-gate if (s2) { 19857c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_CONFGEN; 19867c478bd9Sstevel@tonic-gate *lmflags |= LML_FLG_IGNRELERR; 19877c478bd9Sstevel@tonic-gate } else { 19887c478bd9Sstevel@tonic-gate rtld_flags &= ~RT_FL_CONFGEN; 19897c478bd9Sstevel@tonic-gate *lmflags &= ~LML_FLG_IGNRELERR; 19907c478bd9Sstevel@tonic-gate } 19917c478bd9Sstevel@tonic-gate } else if (variable == ENV_FLG_LOADFLTR) { 19927c478bd9Sstevel@tonic-gate if (s2) { 19937c478bd9Sstevel@tonic-gate *lmtflags |= LML_TFLG_LOADFLTR; 19947c478bd9Sstevel@tonic-gate if (*s2 == '2') 19957c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_WARNFLTR; 19967c478bd9Sstevel@tonic-gate } else { 19977c478bd9Sstevel@tonic-gate *lmtflags &= ~LML_TFLG_LOADFLTR; 19987c478bd9Sstevel@tonic-gate rtld_flags &= ~RT_FL_WARNFLTR; 19997c478bd9Sstevel@tonic-gate } 20007c478bd9Sstevel@tonic-gate } else if (variable == ENV_FLG_PROFILE) { 20017c478bd9Sstevel@tonic-gate profile_name = s2; 20027c478bd9Sstevel@tonic-gate if (s2) { 20037c478bd9Sstevel@tonic-gate if (strcmp(s2, MSG_ORIG(MSG_FIL_RTLD)) == 0) { 20047c478bd9Sstevel@tonic-gate return; 20057c478bd9Sstevel@tonic-gate } 20067c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_SECURE) { 20077c478bd9Sstevel@tonic-gate profile_lib = 20087c478bd9Sstevel@tonic-gate #if defined(_ELF64) 20097c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_LDPROFSE_64); 20107c478bd9Sstevel@tonic-gate #else 20117c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_LDPROFSE); 20127c478bd9Sstevel@tonic-gate #endif 20137c478bd9Sstevel@tonic-gate } else { 20147c478bd9Sstevel@tonic-gate profile_lib = 20157c478bd9Sstevel@tonic-gate #if defined(_ELF64) 20167c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_LDPROF_64); 20177c478bd9Sstevel@tonic-gate #else 20187c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_LDPROF); 20197c478bd9Sstevel@tonic-gate #endif 20207c478bd9Sstevel@tonic-gate } 20217c478bd9Sstevel@tonic-gate } else 20227c478bd9Sstevel@tonic-gate profile_lib = 0; 20237c478bd9Sstevel@tonic-gate } else if (variable == ENV_FLG_SIGNAL) { 20247c478bd9Sstevel@tonic-gate killsig = s2 ? atoi(s2) : SIGKILL; 20257c478bd9Sstevel@tonic-gate } else if (variable == ENV_FLG_TRACE_OBJS) { 20267c478bd9Sstevel@tonic-gate if (s2) { 20277c478bd9Sstevel@tonic-gate *lmflags |= LML_FLG_TRC_ENABLE; 20287c478bd9Sstevel@tonic-gate if (*s2 == '2') 20297c478bd9Sstevel@tonic-gate *lmflags |= LML_FLG_TRC_LDDSTUB; 20307c478bd9Sstevel@tonic-gate } else 20317c478bd9Sstevel@tonic-gate *lmflags &= 20327c478bd9Sstevel@tonic-gate ~(LML_FLG_TRC_ENABLE|LML_FLG_TRC_LDDSTUB); 20337c478bd9Sstevel@tonic-gate } 20347c478bd9Sstevel@tonic-gate } 20357c478bd9Sstevel@tonic-gate } 20367c478bd9Sstevel@tonic-gate 20377c478bd9Sstevel@tonic-gate /* 20387c478bd9Sstevel@tonic-gate * Determine whether we have an architecture specific environment variable. 20397c478bd9Sstevel@tonic-gate * If we do, and we're the wrong architecture, it'll just get ignored. 20407c478bd9Sstevel@tonic-gate * Otherwise the variable is processed in it's architecture neutral form. 20417c478bd9Sstevel@tonic-gate */ 20427c478bd9Sstevel@tonic-gate static int 20437c478bd9Sstevel@tonic-gate ld_arch_env(const char *s1, size_t *len) 20447c478bd9Sstevel@tonic-gate { 20457c478bd9Sstevel@tonic-gate size_t _len = *len - 3; 20467c478bd9Sstevel@tonic-gate 20477c478bd9Sstevel@tonic-gate if (s1[_len++] == '_') { 20487c478bd9Sstevel@tonic-gate if ((s1[_len] == '3') && (s1[_len + 1] == '2')) { 20497c478bd9Sstevel@tonic-gate #if defined(_ELF64) 20507c478bd9Sstevel@tonic-gate return (ENV_TYP_IGNORE); 20517c478bd9Sstevel@tonic-gate #else 20527c478bd9Sstevel@tonic-gate *len = *len - 3; 20537c478bd9Sstevel@tonic-gate return (ENV_TYP_ISA); 20547c478bd9Sstevel@tonic-gate #endif 20557c478bd9Sstevel@tonic-gate } 20567c478bd9Sstevel@tonic-gate if ((s1[_len] == '6') && (s1[_len + 1] == '4')) { 20577c478bd9Sstevel@tonic-gate #if defined(_ELF64) 20587c478bd9Sstevel@tonic-gate *len = *len - 3; 20597c478bd9Sstevel@tonic-gate return (ENV_TYP_ISA); 20607c478bd9Sstevel@tonic-gate #else 20617c478bd9Sstevel@tonic-gate return (ENV_TYP_IGNORE); 20627c478bd9Sstevel@tonic-gate #endif 20637c478bd9Sstevel@tonic-gate } 20647c478bd9Sstevel@tonic-gate } 20657c478bd9Sstevel@tonic-gate return (0); 20667c478bd9Sstevel@tonic-gate } 20677c478bd9Sstevel@tonic-gate 20687c478bd9Sstevel@tonic-gate 20697c478bd9Sstevel@tonic-gate /* 20707c478bd9Sstevel@tonic-gate * Process an LD_FLAGS environment variable. The value can be a comma 20717c478bd9Sstevel@tonic-gate * separated set of tokens, which are sent (in upper case) into the generic 20727c478bd9Sstevel@tonic-gate * LD_XXXX environment variable engine. For example: 20737c478bd9Sstevel@tonic-gate * 20747c478bd9Sstevel@tonic-gate * LD_FLAGS=bind_now -> LD_BIND_NOW=1 20757c478bd9Sstevel@tonic-gate * LD_FLAGS=library_path=/foo:. -> LD_LIBRARY_PATH=/foo:. 20767c478bd9Sstevel@tonic-gate * LD_FLAGS=debug=files:detail -> LD_DEBUG=files:detail 20777c478bd9Sstevel@tonic-gate * or 20787c478bd9Sstevel@tonic-gate * LD_FLAGS=bind_now,library_path=/foo:.,debug=files:detail 20797c478bd9Sstevel@tonic-gate */ 20807c478bd9Sstevel@tonic-gate static int 20817c478bd9Sstevel@tonic-gate ld_flags_env(const char *str, Word *lmflags, Word *lmtflags, 20827c478bd9Sstevel@tonic-gate uint_t env_flags, int aout) 20837c478bd9Sstevel@tonic-gate { 20847c478bd9Sstevel@tonic-gate char *nstr, *sstr, *estr = 0; 20857c478bd9Sstevel@tonic-gate size_t nlen, len; 20867c478bd9Sstevel@tonic-gate 20877c478bd9Sstevel@tonic-gate if (str == 0) 20887c478bd9Sstevel@tonic-gate return (0); 20897c478bd9Sstevel@tonic-gate 20907c478bd9Sstevel@tonic-gate /* 20917c478bd9Sstevel@tonic-gate * Create a new string as we're going to transform the token(s) into 20927c478bd9Sstevel@tonic-gate * uppercase and separate tokens with nulls. 20937c478bd9Sstevel@tonic-gate */ 20947c478bd9Sstevel@tonic-gate len = strlen(str); 20957c478bd9Sstevel@tonic-gate if ((nstr = malloc(len + 1)) == 0) 20967c478bd9Sstevel@tonic-gate return (1); 20977c478bd9Sstevel@tonic-gate (void) strcpy(nstr, str); 20987c478bd9Sstevel@tonic-gate 20997c478bd9Sstevel@tonic-gate for (sstr = nstr; sstr; sstr++, len--) { 21007c478bd9Sstevel@tonic-gate int flags; 21017c478bd9Sstevel@tonic-gate 21027c478bd9Sstevel@tonic-gate if ((*sstr != '\0') && (*sstr != ',')) { 21037c478bd9Sstevel@tonic-gate if (estr == 0) { 21047c478bd9Sstevel@tonic-gate if (*sstr == '=') 21057c478bd9Sstevel@tonic-gate estr = sstr; 21067c478bd9Sstevel@tonic-gate else { 21077c478bd9Sstevel@tonic-gate /* 21087c478bd9Sstevel@tonic-gate * Translate token to uppercase. Don't 21097c478bd9Sstevel@tonic-gate * use toupper(3C) as including this 21107c478bd9Sstevel@tonic-gate * code doubles the size of ld.so.1. 21117c478bd9Sstevel@tonic-gate */ 21127c478bd9Sstevel@tonic-gate if ((*sstr >= 'a') && (*sstr <= 'z')) 21137c478bd9Sstevel@tonic-gate *sstr = *sstr - ('a' - 'A'); 21147c478bd9Sstevel@tonic-gate } 21157c478bd9Sstevel@tonic-gate } 21167c478bd9Sstevel@tonic-gate continue; 21177c478bd9Sstevel@tonic-gate } 21187c478bd9Sstevel@tonic-gate 21197c478bd9Sstevel@tonic-gate *sstr = '\0'; 21207c478bd9Sstevel@tonic-gate if (estr) { 21217c478bd9Sstevel@tonic-gate nlen = estr - nstr; 21227c478bd9Sstevel@tonic-gate if ((*++estr == '\0') || (*estr == ',')) 21237c478bd9Sstevel@tonic-gate estr = 0; 21247c478bd9Sstevel@tonic-gate } else 21257c478bd9Sstevel@tonic-gate nlen = sstr - nstr; 21267c478bd9Sstevel@tonic-gate 21277c478bd9Sstevel@tonic-gate /* 21287c478bd9Sstevel@tonic-gate * Fabricate a boolean definition for any unqualified variable. 21297c478bd9Sstevel@tonic-gate * Thus LD_FLAGS=bind_now is represented as BIND_NOW=(null). 21307c478bd9Sstevel@tonic-gate * The value is sufficient to assert any boolean variables, plus 21317c478bd9Sstevel@tonic-gate * the term "(null)" is specifically chosen in case someone 21327c478bd9Sstevel@tonic-gate * mistakenly supplies something like LD_FLAGS=library_path. 21337c478bd9Sstevel@tonic-gate */ 21347c478bd9Sstevel@tonic-gate if (estr == 0) 21357c478bd9Sstevel@tonic-gate estr = (char *)MSG_INTL(MSG_STR_NULL); 21367c478bd9Sstevel@tonic-gate 21377c478bd9Sstevel@tonic-gate /* 21387c478bd9Sstevel@tonic-gate * Determine whether the environment variable is 32- or 64-bit 21397c478bd9Sstevel@tonic-gate * specific. The length, len, will reflect the architecture 21407c478bd9Sstevel@tonic-gate * neutral portion of the string. 21417c478bd9Sstevel@tonic-gate */ 21427c478bd9Sstevel@tonic-gate if ((flags = ld_arch_env(nstr, &nlen)) != ENV_TYP_IGNORE) { 21437c478bd9Sstevel@tonic-gate ld_generic_env(nstr, nlen, estr, lmflags, 21447c478bd9Sstevel@tonic-gate lmtflags, (env_flags | flags), aout); 21457c478bd9Sstevel@tonic-gate } 21467c478bd9Sstevel@tonic-gate if (len == 0) 21477c478bd9Sstevel@tonic-gate return (0); 21487c478bd9Sstevel@tonic-gate 21497c478bd9Sstevel@tonic-gate nstr = sstr + 1; 21507c478bd9Sstevel@tonic-gate estr = 0; 21517c478bd9Sstevel@tonic-gate } 21527c478bd9Sstevel@tonic-gate return (0); 21537c478bd9Sstevel@tonic-gate } 21547c478bd9Sstevel@tonic-gate 21557c478bd9Sstevel@tonic-gate 21567c478bd9Sstevel@tonic-gate /* 21577c478bd9Sstevel@tonic-gate * Process a single environment string. Only strings starting with `LD_' are 21587c478bd9Sstevel@tonic-gate * reserved for our use. By convention, all strings should be of the form 21597c478bd9Sstevel@tonic-gate * `LD_XXXX=', if the string is followed by a non-null value the appropriate 21607c478bd9Sstevel@tonic-gate * functionality is enabled. Also pick off applicable locale variables. 21617c478bd9Sstevel@tonic-gate */ 21627c478bd9Sstevel@tonic-gate #define LOC_LANG 1 21637c478bd9Sstevel@tonic-gate #define LOC_MESG 2 21647c478bd9Sstevel@tonic-gate #define LOC_ALL 3 21657c478bd9Sstevel@tonic-gate 21667c478bd9Sstevel@tonic-gate static void 21677c478bd9Sstevel@tonic-gate ld_str_env(const char *s1, Word *lmflags, Word *lmtflags, uint_t env_flags, 21687c478bd9Sstevel@tonic-gate int aout) 21697c478bd9Sstevel@tonic-gate { 21707c478bd9Sstevel@tonic-gate const char *s2; 21717c478bd9Sstevel@tonic-gate size_t loc = 0; 21727c478bd9Sstevel@tonic-gate 21737c478bd9Sstevel@tonic-gate if (*s1++ != 'L') 21747c478bd9Sstevel@tonic-gate return; 21757c478bd9Sstevel@tonic-gate 21767c478bd9Sstevel@tonic-gate /* 21777c478bd9Sstevel@tonic-gate * See if we have any locale environment settings. These environment 21787c478bd9Sstevel@tonic-gate * variables have a precedence, LC_ALL is higher than LC_MESSAGES which 21797c478bd9Sstevel@tonic-gate * is higher than LANG. 21807c478bd9Sstevel@tonic-gate */ 21817c478bd9Sstevel@tonic-gate s2 = s1; 21827c478bd9Sstevel@tonic-gate if ((*s2++ == 'C') && (*s2++ == '_') && (*s2 != '\0')) { 21837c478bd9Sstevel@tonic-gate if (strncmp(s2, MSG_ORIG(MSG_LC_ALL), MSG_LC_ALL_SIZE) == 0) { 21847c478bd9Sstevel@tonic-gate s2 += MSG_LC_ALL_SIZE; 21857c478bd9Sstevel@tonic-gate if ((*s2 != '\0') && (loc < LOC_ALL)) { 21867c478bd9Sstevel@tonic-gate locale = s2; 21877c478bd9Sstevel@tonic-gate loc = LOC_ALL; 21887c478bd9Sstevel@tonic-gate } 21897c478bd9Sstevel@tonic-gate } else if (strncmp(s2, MSG_ORIG(MSG_LC_MESSAGES), 21907c478bd9Sstevel@tonic-gate MSG_LC_MESSAGES_SIZE) == 0) { 21917c478bd9Sstevel@tonic-gate s2 += MSG_LC_MESSAGES_SIZE; 21927c478bd9Sstevel@tonic-gate if ((*s2 != '\0') && (loc < LOC_MESG)) { 21937c478bd9Sstevel@tonic-gate locale = s2; 21947c478bd9Sstevel@tonic-gate loc = LOC_MESG; 21957c478bd9Sstevel@tonic-gate } 21967c478bd9Sstevel@tonic-gate } 21977c478bd9Sstevel@tonic-gate return; 21987c478bd9Sstevel@tonic-gate } 21997c478bd9Sstevel@tonic-gate 22007c478bd9Sstevel@tonic-gate s2 = s1; 22017c478bd9Sstevel@tonic-gate if ((*s2++ == 'A') && (*s2++ == 'N') && (*s2++ == 'G') && 22027c478bd9Sstevel@tonic-gate (*s2++ == '=') && (*s2 != '\0') && (loc < LOC_LANG)) { 22037c478bd9Sstevel@tonic-gate locale = s2; 22047c478bd9Sstevel@tonic-gate loc = LOC_LANG; 22057c478bd9Sstevel@tonic-gate return; 22067c478bd9Sstevel@tonic-gate } 22077c478bd9Sstevel@tonic-gate 22087c478bd9Sstevel@tonic-gate /* 22097c478bd9Sstevel@tonic-gate * Pick off any LD_XXXX environment variables. 22107c478bd9Sstevel@tonic-gate */ 22117c478bd9Sstevel@tonic-gate if ((*s1++ == 'D') && (*s1++ == '_') && (*s1 != '\0')) { 22127c478bd9Sstevel@tonic-gate size_t len; 22137c478bd9Sstevel@tonic-gate int flags; 22147c478bd9Sstevel@tonic-gate 22157c478bd9Sstevel@tonic-gate /* 22167c478bd9Sstevel@tonic-gate * Environment variables with no value (ie. LD_XXXX=) typically 22177c478bd9Sstevel@tonic-gate * have no impact, however if environment variables are defined 22187c478bd9Sstevel@tonic-gate * within a configuration file, these null user settings can be 22197c478bd9Sstevel@tonic-gate * used to disable any configuration replaceable definitions. 22207c478bd9Sstevel@tonic-gate */ 22217c478bd9Sstevel@tonic-gate if ((s2 = strchr(s1, '=')) == 0) { 22227c478bd9Sstevel@tonic-gate len = strlen(s1); 22237c478bd9Sstevel@tonic-gate s2 = 0; 22247c478bd9Sstevel@tonic-gate } else if (*++s2 == '\0') { 22257c478bd9Sstevel@tonic-gate len = strlen(s1) - 1; 22267c478bd9Sstevel@tonic-gate s2 = 0; 22277c478bd9Sstevel@tonic-gate } else { 22287c478bd9Sstevel@tonic-gate len = s2 - s1 - 1; 22297c478bd9Sstevel@tonic-gate while (isspace(*s2)) 22307c478bd9Sstevel@tonic-gate s2++; 22317c478bd9Sstevel@tonic-gate } 22327c478bd9Sstevel@tonic-gate 22337c478bd9Sstevel@tonic-gate /* 22347c478bd9Sstevel@tonic-gate * Determine whether the environment variable is 32- or 64-bit 22357c478bd9Sstevel@tonic-gate * specific. The length, len, will reflect the architecture 22367c478bd9Sstevel@tonic-gate * neutral portion of the string. 22377c478bd9Sstevel@tonic-gate */ 22387c478bd9Sstevel@tonic-gate if ((flags = ld_arch_env(s1, &len)) == ENV_TYP_IGNORE) 22397c478bd9Sstevel@tonic-gate return; 22407c478bd9Sstevel@tonic-gate env_flags |= flags; 22417c478bd9Sstevel@tonic-gate 22427c478bd9Sstevel@tonic-gate ld_generic_env(s1, len, s2, lmflags, lmtflags, env_flags, aout); 22437c478bd9Sstevel@tonic-gate } 22447c478bd9Sstevel@tonic-gate } 22457c478bd9Sstevel@tonic-gate 22467c478bd9Sstevel@tonic-gate /* 22477c478bd9Sstevel@tonic-gate * Internal getenv routine. Called immediately after ld.so.1 initializes 22487c478bd9Sstevel@tonic-gate * itself. 22497c478bd9Sstevel@tonic-gate */ 22507c478bd9Sstevel@tonic-gate int 22517c478bd9Sstevel@tonic-gate readenv_user(const char ** envp, Word *lmflags, Word *lmtflags, int aout) 22527c478bd9Sstevel@tonic-gate { 22537c478bd9Sstevel@tonic-gate if (envp == (const char **)0) 22547c478bd9Sstevel@tonic-gate return (0); 22557c478bd9Sstevel@tonic-gate 22567c478bd9Sstevel@tonic-gate while (*envp != (const char *)0) 22577c478bd9Sstevel@tonic-gate ld_str_env(*envp++, lmflags, lmtflags, 0, aout); 22587c478bd9Sstevel@tonic-gate 22597c478bd9Sstevel@tonic-gate /* 22607c478bd9Sstevel@tonic-gate * Having collected the best representation of any LD_FLAGS, process 22617c478bd9Sstevel@tonic-gate * these strings. 22627c478bd9Sstevel@tonic-gate */ 22637c478bd9Sstevel@tonic-gate if (ld_flags_env(rpl_ldflags, lmflags, lmtflags, 0, aout) == 1) 22647c478bd9Sstevel@tonic-gate return (1); 22657c478bd9Sstevel@tonic-gate 22667c478bd9Sstevel@tonic-gate /* 22677c478bd9Sstevel@tonic-gate * Don't allow environment controlled auditing when tracing or if 22687c478bd9Sstevel@tonic-gate * explicitly disabled. Trigger all tracing modes from 22697c478bd9Sstevel@tonic-gate * LML_FLG_TRC_ENABLE. 22707c478bd9Sstevel@tonic-gate */ 22717c478bd9Sstevel@tonic-gate if ((*lmflags & LML_FLG_TRC_ENABLE) || (rtld_flags & RT_FL_NOAUDIT)) 22727c478bd9Sstevel@tonic-gate rpl_audit = profile_lib = profile_name = 0; 22737c478bd9Sstevel@tonic-gate if ((*lmflags & LML_FLG_TRC_ENABLE) == 0) 22747c478bd9Sstevel@tonic-gate *lmflags &= ~LML_MSK_TRC; 22757c478bd9Sstevel@tonic-gate 2276dffec89cSrie /* 2277dffec89cSrie * If both LD_BIND_NOW and LD_BIND_LAZY are specified, the former wins. 2278dffec89cSrie */ 2279dffec89cSrie if ((rtld_flags2 & (RT_FL2_BINDNOW | RT_FL2_BINDLAZY)) == 2280dffec89cSrie (RT_FL2_BINDNOW | RT_FL2_BINDLAZY)) 2281dffec89cSrie rtld_flags2 &= ~RT_FL2_BINDLAZY; 2282dffec89cSrie 22837c478bd9Sstevel@tonic-gate /* 22847c478bd9Sstevel@tonic-gate * If we have a locale setting make sure its worth processing further. 22857c478bd9Sstevel@tonic-gate * Duplicate the string so that new locale setting can generically 22867c478bd9Sstevel@tonic-gate * cleanup any previous locales. 22877c478bd9Sstevel@tonic-gate */ 22887c478bd9Sstevel@tonic-gate if (locale) { 22897c478bd9Sstevel@tonic-gate if (((*locale == 'C') && (*(locale + 1) == '\0')) || 22907c478bd9Sstevel@tonic-gate (strcmp(locale, MSG_ORIG(MSG_TKN_POSIX)) == 0)) 22917c478bd9Sstevel@tonic-gate locale = 0; 22927c478bd9Sstevel@tonic-gate else 22937c478bd9Sstevel@tonic-gate locale = strdup(locale); 22947c478bd9Sstevel@tonic-gate } 22957c478bd9Sstevel@tonic-gate return (0); 22967c478bd9Sstevel@tonic-gate } 22977c478bd9Sstevel@tonic-gate 22987c478bd9Sstevel@tonic-gate /* 22997c478bd9Sstevel@tonic-gate * Configuration environment processing. Called after the a.out has been 23007c478bd9Sstevel@tonic-gate * processed (as the a.out can specify its own configuration file). 23017c478bd9Sstevel@tonic-gate */ 23027c478bd9Sstevel@tonic-gate int 23037c478bd9Sstevel@tonic-gate readenv_config(Rtc_env * envtbl, Addr addr, int aout) 23047c478bd9Sstevel@tonic-gate { 23057c478bd9Sstevel@tonic-gate Word * lmflags = &(lml_main.lm_flags); 23067c478bd9Sstevel@tonic-gate Word * lmtflags = &(lml_main.lm_tflags); 23077c478bd9Sstevel@tonic-gate 23087c478bd9Sstevel@tonic-gate if (envtbl == (Rtc_env *)0) 23097c478bd9Sstevel@tonic-gate return (0); 23107c478bd9Sstevel@tonic-gate 23117c478bd9Sstevel@tonic-gate while (envtbl->env_str) { 23127c478bd9Sstevel@tonic-gate uint_t env_flags = ENV_TYP_CONFIG; 23137c478bd9Sstevel@tonic-gate 23147c478bd9Sstevel@tonic-gate if (envtbl->env_flags & RTC_ENV_PERMANT) 23157c478bd9Sstevel@tonic-gate env_flags |= ENV_TYP_PERMANT; 23167c478bd9Sstevel@tonic-gate 23177c478bd9Sstevel@tonic-gate ld_str_env((const char *)(envtbl->env_str + addr), 23187c478bd9Sstevel@tonic-gate lmflags, lmtflags, env_flags, 0); 23197c478bd9Sstevel@tonic-gate envtbl++; 23207c478bd9Sstevel@tonic-gate } 23217c478bd9Sstevel@tonic-gate 23227c478bd9Sstevel@tonic-gate /* 23237c478bd9Sstevel@tonic-gate * Having collected the best representation of any LD_FLAGS, process 23247c478bd9Sstevel@tonic-gate * these strings. 23257c478bd9Sstevel@tonic-gate */ 23267c478bd9Sstevel@tonic-gate if (ld_flags_env(rpl_ldflags, lmflags, lmtflags, 0, aout) == 1) 23277c478bd9Sstevel@tonic-gate return (1); 23287c478bd9Sstevel@tonic-gate if (ld_flags_env(prm_ldflags, lmflags, lmtflags, ENV_TYP_CONFIG, 23297c478bd9Sstevel@tonic-gate aout) == 1) 23307c478bd9Sstevel@tonic-gate return (1); 23317c478bd9Sstevel@tonic-gate 23327c478bd9Sstevel@tonic-gate /* 23337c478bd9Sstevel@tonic-gate * Don't allow environment controlled auditing when tracing or if 23347c478bd9Sstevel@tonic-gate * explicitly disabled. Trigger all tracing modes from 23357c478bd9Sstevel@tonic-gate * LML_FLG_TRC_ENABLE. 23367c478bd9Sstevel@tonic-gate */ 23377c478bd9Sstevel@tonic-gate if ((*lmflags & LML_FLG_TRC_ENABLE) || (rtld_flags & RT_FL_NOAUDIT)) 23387c478bd9Sstevel@tonic-gate prm_audit = profile_lib = profile_name = 0; 23397c478bd9Sstevel@tonic-gate if ((*lmflags & LML_FLG_TRC_ENABLE) == 0) 23407c478bd9Sstevel@tonic-gate *lmflags &= ~LML_MSK_TRC; 23417c478bd9Sstevel@tonic-gate 23427c478bd9Sstevel@tonic-gate return (0); 23437c478bd9Sstevel@tonic-gate } 23447c478bd9Sstevel@tonic-gate 23457c478bd9Sstevel@tonic-gate int 23467c478bd9Sstevel@tonic-gate dowrite(Prfbuf * prf) 23477c478bd9Sstevel@tonic-gate { 23487c478bd9Sstevel@tonic-gate /* 23497c478bd9Sstevel@tonic-gate * We do not have a valid file descriptor, so we are unable 23507c478bd9Sstevel@tonic-gate * to flush the buffer. 23517c478bd9Sstevel@tonic-gate */ 23527c478bd9Sstevel@tonic-gate if (prf->pr_fd == -1) 23537c478bd9Sstevel@tonic-gate return (0); 23547c478bd9Sstevel@tonic-gate (void) write(prf->pr_fd, prf->pr_buf, prf->pr_cur - prf->pr_buf); 23557c478bd9Sstevel@tonic-gate prf->pr_cur = prf->pr_buf; 23567c478bd9Sstevel@tonic-gate return (1); 23577c478bd9Sstevel@tonic-gate } 23587c478bd9Sstevel@tonic-gate 23597c478bd9Sstevel@tonic-gate /* 23607c478bd9Sstevel@tonic-gate * Simplified printing. The following conversion specifications are supported: 23617c478bd9Sstevel@tonic-gate * 23627c478bd9Sstevel@tonic-gate * % [#] [-] [min field width] [. precision] s|d|x|c 23637c478bd9Sstevel@tonic-gate * 23647c478bd9Sstevel@tonic-gate * 23657c478bd9Sstevel@tonic-gate * dorprf takes the output buffer in the form of Prfbuf which permits 23667c478bd9Sstevel@tonic-gate * the verification of the output buffer size and the concatenation 23677c478bd9Sstevel@tonic-gate * of data to an already existing output buffer. The Prfbuf 23687c478bd9Sstevel@tonic-gate * structure contains the following: 23697c478bd9Sstevel@tonic-gate * 23707c478bd9Sstevel@tonic-gate * pr_buf pointer to the beginning of the output buffer. 23717c478bd9Sstevel@tonic-gate * pr_cur pointer to the next available byte in the output buffer. By 23727c478bd9Sstevel@tonic-gate * setting pr_cur ahead of pr_buf you can append to an already 23737c478bd9Sstevel@tonic-gate * existing buffer. 23747c478bd9Sstevel@tonic-gate * pr_len the size of the output buffer. By setting pr_len to '0' you 23757c478bd9Sstevel@tonic-gate * disable protection from overflows in the output buffer. 23767c478bd9Sstevel@tonic-gate * pr_fd a pointer to the file-descriptor the buffer will eventually be 23777c478bd9Sstevel@tonic-gate * output to. If pr_fd is set to '-1' then it's assumed there is 23787c478bd9Sstevel@tonic-gate * no output buffer and doprf() will return with an error if the 23797c478bd9Sstevel@tonic-gate * output buffer is overflowed. If pr_fd is > -1 then when the 23807c478bd9Sstevel@tonic-gate * output buffer is filled it will be flushed to pr_fd and then 23817c478bd9Sstevel@tonic-gate * the available for additional data. 23827c478bd9Sstevel@tonic-gate */ 23837c478bd9Sstevel@tonic-gate #define FLG_UT_MINUS 0x0001 /* - */ 23847c478bd9Sstevel@tonic-gate #define FLG_UT_SHARP 0x0002 /* # */ 23857c478bd9Sstevel@tonic-gate #define FLG_UT_DOTSEEN 0x0008 /* dot appeared in format spec */ 23867c478bd9Sstevel@tonic-gate 23877c478bd9Sstevel@tonic-gate /* 23887c478bd9Sstevel@tonic-gate * This macro is for use from within doprf only. it's to be used 23897c478bd9Sstevel@tonic-gate * for checking the output buffer size and placing characters into 23907c478bd9Sstevel@tonic-gate * the buffer. 23917c478bd9Sstevel@tonic-gate */ 23927c478bd9Sstevel@tonic-gate #define PUTC(c) \ 23937c478bd9Sstevel@tonic-gate { \ 23947c478bd9Sstevel@tonic-gate register char tmpc; \ 23957c478bd9Sstevel@tonic-gate \ 23967c478bd9Sstevel@tonic-gate tmpc = (c); \ 23977c478bd9Sstevel@tonic-gate if ((bufsiz) && ((bp + 1) >= bufend)) { \ 23987c478bd9Sstevel@tonic-gate prf->pr_cur = bp; \ 23997c478bd9Sstevel@tonic-gate if (dowrite(prf) == 0) \ 24007c478bd9Sstevel@tonic-gate return (0); \ 24017c478bd9Sstevel@tonic-gate bp = prf->pr_cur; \ 24027c478bd9Sstevel@tonic-gate } \ 24037c478bd9Sstevel@tonic-gate *bp++ = tmpc; \ 24047c478bd9Sstevel@tonic-gate } 24057c478bd9Sstevel@tonic-gate 24067c478bd9Sstevel@tonic-gate size_t 24077c478bd9Sstevel@tonic-gate doprf(const char *format, va_list args, Prfbuf *prf) 24087c478bd9Sstevel@tonic-gate { 24097c478bd9Sstevel@tonic-gate char c; 24107c478bd9Sstevel@tonic-gate char *bp = prf->pr_cur; 24117c478bd9Sstevel@tonic-gate char *bufend = prf->pr_buf + prf->pr_len; 24127c478bd9Sstevel@tonic-gate size_t bufsiz = prf->pr_len; 24137c478bd9Sstevel@tonic-gate 24147c478bd9Sstevel@tonic-gate while ((c = *format++) != '\0') { 24157c478bd9Sstevel@tonic-gate if (c != '%') { 24167c478bd9Sstevel@tonic-gate PUTC(c); 24177c478bd9Sstevel@tonic-gate } else { 24187c478bd9Sstevel@tonic-gate int base = 0, flag = 0, width = 0, prec = 0; 24197c478bd9Sstevel@tonic-gate size_t _i; 24207c478bd9Sstevel@tonic-gate int _c, _n; 24217c478bd9Sstevel@tonic-gate char *_s; 24227c478bd9Sstevel@tonic-gate int ls = 0; 24237c478bd9Sstevel@tonic-gate again: 24247c478bd9Sstevel@tonic-gate c = *format++; 24257c478bd9Sstevel@tonic-gate switch (c) { 24267c478bd9Sstevel@tonic-gate case '-': 24277c478bd9Sstevel@tonic-gate flag |= FLG_UT_MINUS; 24287c478bd9Sstevel@tonic-gate goto again; 24297c478bd9Sstevel@tonic-gate case '#': 24307c478bd9Sstevel@tonic-gate flag |= FLG_UT_SHARP; 24317c478bd9Sstevel@tonic-gate goto again; 24327c478bd9Sstevel@tonic-gate case '.': 24337c478bd9Sstevel@tonic-gate flag |= FLG_UT_DOTSEEN; 24347c478bd9Sstevel@tonic-gate goto again; 24357c478bd9Sstevel@tonic-gate case '0': 24367c478bd9Sstevel@tonic-gate case '1': 24377c478bd9Sstevel@tonic-gate case '2': 24387c478bd9Sstevel@tonic-gate case '3': 24397c478bd9Sstevel@tonic-gate case '4': 24407c478bd9Sstevel@tonic-gate case '5': 24417c478bd9Sstevel@tonic-gate case '6': 24427c478bd9Sstevel@tonic-gate case '7': 24437c478bd9Sstevel@tonic-gate case '8': 24447c478bd9Sstevel@tonic-gate case '9': 24457c478bd9Sstevel@tonic-gate if (flag & FLG_UT_DOTSEEN) 24467c478bd9Sstevel@tonic-gate prec = (prec * 10) + c - '0'; 24477c478bd9Sstevel@tonic-gate else 24487c478bd9Sstevel@tonic-gate width = (width * 10) + c - '0'; 24497c478bd9Sstevel@tonic-gate goto again; 24507c478bd9Sstevel@tonic-gate case 'x': 24517c478bd9Sstevel@tonic-gate case 'X': 24527c478bd9Sstevel@tonic-gate base = 16; 24537c478bd9Sstevel@tonic-gate break; 24547c478bd9Sstevel@tonic-gate case 'd': 24557c478bd9Sstevel@tonic-gate case 'D': 24567c478bd9Sstevel@tonic-gate case 'u': 24577c478bd9Sstevel@tonic-gate base = 10; 24587c478bd9Sstevel@tonic-gate flag &= ~FLG_UT_SHARP; 24597c478bd9Sstevel@tonic-gate break; 24607c478bd9Sstevel@tonic-gate case 'l': 24617c478bd9Sstevel@tonic-gate base = 10; 24627c478bd9Sstevel@tonic-gate ls++; /* number of l's (long or long long) */ 24637c478bd9Sstevel@tonic-gate if ((*format == 'l') || 24647c478bd9Sstevel@tonic-gate (*format == 'd') || (*format == 'D') || 24657c478bd9Sstevel@tonic-gate (*format == 'x') || (*format == 'X') || 24667c478bd9Sstevel@tonic-gate (*format == 'o') || (*format == 'O')) 24677c478bd9Sstevel@tonic-gate goto again; 24687c478bd9Sstevel@tonic-gate break; 24697c478bd9Sstevel@tonic-gate case 'o': 24707c478bd9Sstevel@tonic-gate case 'O': 24717c478bd9Sstevel@tonic-gate base = 8; 24727c478bd9Sstevel@tonic-gate break; 24737c478bd9Sstevel@tonic-gate case 'c': 24747c478bd9Sstevel@tonic-gate _c = va_arg(args, int); 24757c478bd9Sstevel@tonic-gate 24767c478bd9Sstevel@tonic-gate for (_i = 24; _i > 0; _i -= 8) { 24777c478bd9Sstevel@tonic-gate if ((c = ((_c >> _i) & 0x7f)) != 0) { 24787c478bd9Sstevel@tonic-gate PUTC(c); 24797c478bd9Sstevel@tonic-gate } 24807c478bd9Sstevel@tonic-gate } 24817c478bd9Sstevel@tonic-gate if ((c = ((_c >> _i) & 0x7f)) != 0) { 24827c478bd9Sstevel@tonic-gate PUTC(c); 24837c478bd9Sstevel@tonic-gate } 24847c478bd9Sstevel@tonic-gate break; 24857c478bd9Sstevel@tonic-gate case 's': 24867c478bd9Sstevel@tonic-gate _s = va_arg(args, char *); 24877c478bd9Sstevel@tonic-gate _i = strlen(_s); 24887c478bd9Sstevel@tonic-gate /* LINTED */ 24897c478bd9Sstevel@tonic-gate _n = (int)(width - _i); 24907c478bd9Sstevel@tonic-gate if (!prec) 24917c478bd9Sstevel@tonic-gate /* LINTED */ 24927c478bd9Sstevel@tonic-gate prec = (int)_i; 24937c478bd9Sstevel@tonic-gate 24947c478bd9Sstevel@tonic-gate if (width && !(flag & FLG_UT_MINUS)) { 24957c478bd9Sstevel@tonic-gate while (_n-- > 0) 24967c478bd9Sstevel@tonic-gate PUTC(' '); 24977c478bd9Sstevel@tonic-gate } 24987c478bd9Sstevel@tonic-gate while (((c = *_s++) != 0) && prec--) { 24997c478bd9Sstevel@tonic-gate PUTC(c); 25007c478bd9Sstevel@tonic-gate } 25017c478bd9Sstevel@tonic-gate if (width && (flag & FLG_UT_MINUS)) { 25027c478bd9Sstevel@tonic-gate while (_n-- > 0) 25037c478bd9Sstevel@tonic-gate PUTC(' '); 25047c478bd9Sstevel@tonic-gate } 25057c478bd9Sstevel@tonic-gate break; 25067c478bd9Sstevel@tonic-gate case '%': 25077c478bd9Sstevel@tonic-gate PUTC('%'); 25087c478bd9Sstevel@tonic-gate break; 25097c478bd9Sstevel@tonic-gate default: 25107c478bd9Sstevel@tonic-gate break; 25117c478bd9Sstevel@tonic-gate } 25127c478bd9Sstevel@tonic-gate 25137c478bd9Sstevel@tonic-gate /* 25147c478bd9Sstevel@tonic-gate * Numeric processing 25157c478bd9Sstevel@tonic-gate */ 25167c478bd9Sstevel@tonic-gate if (base) { 25177c478bd9Sstevel@tonic-gate char local[20]; 25187c478bd9Sstevel@tonic-gate const char *string = 25197c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_HEXNUM); 25207c478bd9Sstevel@tonic-gate size_t ssize = 0, psize = 0; 25217c478bd9Sstevel@tonic-gate const char *prefix = 25227c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_STR_EMPTY); 25237c478bd9Sstevel@tonic-gate u_longlong_t num; 25247c478bd9Sstevel@tonic-gate 25257c478bd9Sstevel@tonic-gate switch (ls) { 25267c478bd9Sstevel@tonic-gate case 0: /* int */ 25277c478bd9Sstevel@tonic-gate num = (u_longlong_t) 25287c478bd9Sstevel@tonic-gate va_arg(args, uint_t); 25297c478bd9Sstevel@tonic-gate break; 25307c478bd9Sstevel@tonic-gate case 1: /* long */ 25317c478bd9Sstevel@tonic-gate num = (u_longlong_t) 25327c478bd9Sstevel@tonic-gate va_arg(args, ulong_t); 25337c478bd9Sstevel@tonic-gate break; 25347c478bd9Sstevel@tonic-gate case 2: /* long long */ 25357c478bd9Sstevel@tonic-gate num = va_arg(args, u_longlong_t); 25367c478bd9Sstevel@tonic-gate break; 25377c478bd9Sstevel@tonic-gate } 25387c478bd9Sstevel@tonic-gate 25397c478bd9Sstevel@tonic-gate if (flag & FLG_UT_SHARP) { 25407c478bd9Sstevel@tonic-gate if (base == 16) { 25417c478bd9Sstevel@tonic-gate prefix = MSG_ORIG(MSG_STR_HEX); 25427c478bd9Sstevel@tonic-gate psize = 2; 25437c478bd9Sstevel@tonic-gate } else { 25447c478bd9Sstevel@tonic-gate prefix = MSG_ORIG(MSG_STR_ZERO); 25457c478bd9Sstevel@tonic-gate psize = 1; 25467c478bd9Sstevel@tonic-gate } 25477c478bd9Sstevel@tonic-gate } 25487c478bd9Sstevel@tonic-gate if ((base == 10) && (long)num < 0) { 25497c478bd9Sstevel@tonic-gate prefix = MSG_ORIG(MSG_STR_NEGATE); 25507c478bd9Sstevel@tonic-gate psize = MSG_STR_NEGATE_SIZE; 25517c478bd9Sstevel@tonic-gate num = (u_longlong_t)(-(longlong_t)num); 25527c478bd9Sstevel@tonic-gate } 25537c478bd9Sstevel@tonic-gate 25547c478bd9Sstevel@tonic-gate /* 25557c478bd9Sstevel@tonic-gate * Convert the numeric value into a local 25567c478bd9Sstevel@tonic-gate * string (stored in reverse order). 25577c478bd9Sstevel@tonic-gate */ 25587c478bd9Sstevel@tonic-gate _s = local; 25597c478bd9Sstevel@tonic-gate do { 25607c478bd9Sstevel@tonic-gate *_s++ = string[num % base]; 25617c478bd9Sstevel@tonic-gate num /= base; 25627c478bd9Sstevel@tonic-gate ssize++; 25637c478bd9Sstevel@tonic-gate } while (num); 25647c478bd9Sstevel@tonic-gate 25657c478bd9Sstevel@tonic-gate /* 25667c478bd9Sstevel@tonic-gate * Provide any precision or width padding. 25677c478bd9Sstevel@tonic-gate */ 25687c478bd9Sstevel@tonic-gate if (prec) { 25697c478bd9Sstevel@tonic-gate /* LINTED */ 25707c478bd9Sstevel@tonic-gate _n = (int)(prec - ssize); 25717c478bd9Sstevel@tonic-gate while (_n-- > 0) { 25727c478bd9Sstevel@tonic-gate *_s++ = '0'; 25737c478bd9Sstevel@tonic-gate ssize++; 25747c478bd9Sstevel@tonic-gate } 25757c478bd9Sstevel@tonic-gate } 25767c478bd9Sstevel@tonic-gate if (width && !(flag & FLG_UT_MINUS)) { 25777c478bd9Sstevel@tonic-gate /* LINTED */ 25787c478bd9Sstevel@tonic-gate _n = (int)(width - ssize - psize); 25797c478bd9Sstevel@tonic-gate while (_n-- > 0) { 25807c478bd9Sstevel@tonic-gate PUTC(' '); 25817c478bd9Sstevel@tonic-gate } 25827c478bd9Sstevel@tonic-gate } 25837c478bd9Sstevel@tonic-gate 25847c478bd9Sstevel@tonic-gate /* 25857c478bd9Sstevel@tonic-gate * Print any prefix and the numeric string 25867c478bd9Sstevel@tonic-gate */ 25877c478bd9Sstevel@tonic-gate while (*prefix) 25887c478bd9Sstevel@tonic-gate PUTC(*prefix++); 25897c478bd9Sstevel@tonic-gate do { 25907c478bd9Sstevel@tonic-gate PUTC(*--_s); 25917c478bd9Sstevel@tonic-gate } while (_s > local); 25927c478bd9Sstevel@tonic-gate 25937c478bd9Sstevel@tonic-gate /* 25947c478bd9Sstevel@tonic-gate * Provide any width padding. 25957c478bd9Sstevel@tonic-gate */ 25967c478bd9Sstevel@tonic-gate if (width && (flag & FLG_UT_MINUS)) { 25977c478bd9Sstevel@tonic-gate /* LINTED */ 25987c478bd9Sstevel@tonic-gate _n = (int)(width - ssize - psize); 25997c478bd9Sstevel@tonic-gate while (_n-- > 0) 26007c478bd9Sstevel@tonic-gate PUTC(' '); 26017c478bd9Sstevel@tonic-gate } 26027c478bd9Sstevel@tonic-gate } 26037c478bd9Sstevel@tonic-gate } 26047c478bd9Sstevel@tonic-gate } 26057c478bd9Sstevel@tonic-gate PUTC('\0'); 26067c478bd9Sstevel@tonic-gate prf->pr_cur = bp; 26077c478bd9Sstevel@tonic-gate return (1); 26087c478bd9Sstevel@tonic-gate } 26097c478bd9Sstevel@tonic-gate 26107c478bd9Sstevel@tonic-gate static int 26117c478bd9Sstevel@tonic-gate doprintf(const char *format, va_list args, Prfbuf *prf) 26127c478bd9Sstevel@tonic-gate { 26137c478bd9Sstevel@tonic-gate char *ocur = prf->pr_cur; 26147c478bd9Sstevel@tonic-gate 26157c478bd9Sstevel@tonic-gate if (doprf(format, args, prf) == 0) 26167c478bd9Sstevel@tonic-gate return (0); 26177c478bd9Sstevel@tonic-gate /* LINTED */ 26187c478bd9Sstevel@tonic-gate return ((int)(prf->pr_cur - ocur)); 26197c478bd9Sstevel@tonic-gate } 26207c478bd9Sstevel@tonic-gate 26217c478bd9Sstevel@tonic-gate /* VARARGS2 */ 26227c478bd9Sstevel@tonic-gate int 26237c478bd9Sstevel@tonic-gate sprintf(char *buf, const char *format, ...) 26247c478bd9Sstevel@tonic-gate { 26257c478bd9Sstevel@tonic-gate va_list args; 26267c478bd9Sstevel@tonic-gate int len; 26277c478bd9Sstevel@tonic-gate Prfbuf prf; 26287c478bd9Sstevel@tonic-gate 26297c478bd9Sstevel@tonic-gate va_start(args, format); 26307c478bd9Sstevel@tonic-gate prf.pr_buf = prf.pr_cur = buf; 26317c478bd9Sstevel@tonic-gate prf.pr_len = 0; 26327c478bd9Sstevel@tonic-gate prf.pr_fd = -1; 26337c478bd9Sstevel@tonic-gate len = doprintf(format, args, &prf); 26347c478bd9Sstevel@tonic-gate va_end(args); 26357c478bd9Sstevel@tonic-gate 26367c478bd9Sstevel@tonic-gate /* 26377c478bd9Sstevel@tonic-gate * sprintf() return value excludes the terminating null byte. 26387c478bd9Sstevel@tonic-gate */ 26397c478bd9Sstevel@tonic-gate return (len - 1); 26407c478bd9Sstevel@tonic-gate } 26417c478bd9Sstevel@tonic-gate 26427c478bd9Sstevel@tonic-gate /* VARARGS3 */ 26437c478bd9Sstevel@tonic-gate int 26447c478bd9Sstevel@tonic-gate snprintf(char *buf, size_t n, const char *format, ...) 26457c478bd9Sstevel@tonic-gate { 26467c478bd9Sstevel@tonic-gate va_list args; 26477c478bd9Sstevel@tonic-gate int len; 26487c478bd9Sstevel@tonic-gate Prfbuf prf; 26497c478bd9Sstevel@tonic-gate 26507c478bd9Sstevel@tonic-gate va_start(args, format); 26517c478bd9Sstevel@tonic-gate prf.pr_buf = prf.pr_cur = buf; 26527c478bd9Sstevel@tonic-gate prf.pr_len = n; 26537c478bd9Sstevel@tonic-gate prf.pr_fd = -1; 26547c478bd9Sstevel@tonic-gate len = doprintf(format, args, &prf); 26557c478bd9Sstevel@tonic-gate va_end(args); 26567c478bd9Sstevel@tonic-gate 26577c478bd9Sstevel@tonic-gate return (len); 26587c478bd9Sstevel@tonic-gate } 26597c478bd9Sstevel@tonic-gate 26607c478bd9Sstevel@tonic-gate /* VARARGS2 */ 26617c478bd9Sstevel@tonic-gate int 26627c478bd9Sstevel@tonic-gate bufprint(Prfbuf *prf, const char *format, ...) 26637c478bd9Sstevel@tonic-gate { 26647c478bd9Sstevel@tonic-gate va_list args; 26657c478bd9Sstevel@tonic-gate int len; 26667c478bd9Sstevel@tonic-gate 26677c478bd9Sstevel@tonic-gate va_start(args, format); 26687c478bd9Sstevel@tonic-gate len = doprintf(format, args, prf); 26697c478bd9Sstevel@tonic-gate va_end(args); 26707c478bd9Sstevel@tonic-gate 26717c478bd9Sstevel@tonic-gate return (len); 26727c478bd9Sstevel@tonic-gate } 26737c478bd9Sstevel@tonic-gate 26747c478bd9Sstevel@tonic-gate /*PRINTFLIKE1*/ 26757c478bd9Sstevel@tonic-gate int 26767c478bd9Sstevel@tonic-gate printf(const char *format, ...) 26777c478bd9Sstevel@tonic-gate { 26787c478bd9Sstevel@tonic-gate va_list args; 26797c478bd9Sstevel@tonic-gate char buffer[ERRSIZE]; 26807c478bd9Sstevel@tonic-gate Prfbuf prf; 26817c478bd9Sstevel@tonic-gate 26827c478bd9Sstevel@tonic-gate va_start(args, format); 26837c478bd9Sstevel@tonic-gate prf.pr_buf = prf.pr_cur = buffer; 26847c478bd9Sstevel@tonic-gate prf.pr_len = ERRSIZE; 26857c478bd9Sstevel@tonic-gate prf.pr_fd = 1; 26867c478bd9Sstevel@tonic-gate (void) doprf(format, args, &prf); 26877c478bd9Sstevel@tonic-gate va_end(args); 26887c478bd9Sstevel@tonic-gate /* 26897c478bd9Sstevel@tonic-gate * Trim trailing '\0' form buffer 26907c478bd9Sstevel@tonic-gate */ 26917c478bd9Sstevel@tonic-gate prf.pr_cur--; 26927c478bd9Sstevel@tonic-gate return (dowrite(&prf)); 26937c478bd9Sstevel@tonic-gate } 26947c478bd9Sstevel@tonic-gate 26957c478bd9Sstevel@tonic-gate static char errbuf[ERRSIZE], *nextptr = errbuf, *prevptr = 0; 26967c478bd9Sstevel@tonic-gate 26977c478bd9Sstevel@tonic-gate /*PRINTFLIKE2*/ 26987c478bd9Sstevel@tonic-gate void 26997c478bd9Sstevel@tonic-gate eprintf(Error error, const char *format, ...) 27007c478bd9Sstevel@tonic-gate { 27017c478bd9Sstevel@tonic-gate va_list args; 27027c478bd9Sstevel@tonic-gate int overflow = 0; 27037c478bd9Sstevel@tonic-gate static int lock = 0; 27047c478bd9Sstevel@tonic-gate Prfbuf prf; 27057c478bd9Sstevel@tonic-gate 27067c478bd9Sstevel@tonic-gate if (lock || (nextptr == (errbuf + ERRSIZE))) 27077c478bd9Sstevel@tonic-gate return; 27087c478bd9Sstevel@tonic-gate 27097c478bd9Sstevel@tonic-gate /* 27107c478bd9Sstevel@tonic-gate * Note: this lock is here to prevent the same thread from recursively 27117c478bd9Sstevel@tonic-gate * entering itself during a eprintf. ie: during eprintf malloc() fails 27127c478bd9Sstevel@tonic-gate * and we try and call eprintf ... and then malloc() fails .... 27137c478bd9Sstevel@tonic-gate */ 27147c478bd9Sstevel@tonic-gate lock = 1; 27157c478bd9Sstevel@tonic-gate 27167c478bd9Sstevel@tonic-gate /* 27177c478bd9Sstevel@tonic-gate * If we have completed startup initialization, all error messages 27187c478bd9Sstevel@tonic-gate * must be saved. These are reported through dlerror(). If we're 27197c478bd9Sstevel@tonic-gate * still in the initialization stage, output the error directly and 27207c478bd9Sstevel@tonic-gate * add a newline. 27217c478bd9Sstevel@tonic-gate */ 27227c478bd9Sstevel@tonic-gate va_start(args, format); 27237c478bd9Sstevel@tonic-gate 27247c478bd9Sstevel@tonic-gate prf.pr_buf = prf.pr_cur = nextptr; 27257c478bd9Sstevel@tonic-gate prf.pr_len = ERRSIZE - (nextptr - errbuf); 27267c478bd9Sstevel@tonic-gate 27277c478bd9Sstevel@tonic-gate if (!(rtld_flags & RT_FL_APPLIC)) 27287c478bd9Sstevel@tonic-gate prf.pr_fd = 2; 27297c478bd9Sstevel@tonic-gate else 27307c478bd9Sstevel@tonic-gate prf.pr_fd = -1; 27317c478bd9Sstevel@tonic-gate 27327c478bd9Sstevel@tonic-gate if (error > ERR_NONE) { 27337c478bd9Sstevel@tonic-gate if ((error == ERR_FATAL) && (rtld_flags2 & RT_FL2_FTL2WARN)) 27347c478bd9Sstevel@tonic-gate error = ERR_WARNING; 27357c478bd9Sstevel@tonic-gate if (error == ERR_WARNING) { 27367c478bd9Sstevel@tonic-gate if (err_strs[ERR_WARNING] == 0) 27377c478bd9Sstevel@tonic-gate err_strs[ERR_WARNING] = MSG_INTL(MSG_ERR_WARNING); 27387c478bd9Sstevel@tonic-gate } else if (error == ERR_FATAL) { 27397c478bd9Sstevel@tonic-gate if (err_strs[ERR_FATAL] == 0) 27407c478bd9Sstevel@tonic-gate err_strs[ERR_FATAL] = MSG_INTL(MSG_ERR_FATAL); 27417c478bd9Sstevel@tonic-gate } else if (error == ERR_ELF) { 27427c478bd9Sstevel@tonic-gate if (err_strs[ERR_ELF] == 0) 27437c478bd9Sstevel@tonic-gate err_strs[ERR_ELF] = MSG_INTL(MSG_ERR_ELF); 27447c478bd9Sstevel@tonic-gate } 274541072f3cSrie if (procname) { 274641072f3cSrie if (bufprint(&prf, MSG_ORIG(MSG_STR_EMSGFOR1), 274741072f3cSrie rtldname, procname, err_strs[error]) == 0) 274841072f3cSrie overflow = 1; 27497c478bd9Sstevel@tonic-gate } else { 275041072f3cSrie if (bufprint(&prf, MSG_ORIG(MSG_STR_EMSGFOR2), 275141072f3cSrie rtldname, err_strs[error]) == 0) 275241072f3cSrie overflow = 1; 275341072f3cSrie } 275441072f3cSrie if (overflow == 0) { 27557c478bd9Sstevel@tonic-gate /* 27567c478bd9Sstevel@tonic-gate * Remove the terminating '\0'. 27577c478bd9Sstevel@tonic-gate */ 27587c478bd9Sstevel@tonic-gate prf.pr_cur--; 27597c478bd9Sstevel@tonic-gate } 27607c478bd9Sstevel@tonic-gate } 27617c478bd9Sstevel@tonic-gate 27627c478bd9Sstevel@tonic-gate if ((overflow == 0) && doprf(format, args, &prf) == 0) 27637c478bd9Sstevel@tonic-gate overflow = 1; 27647c478bd9Sstevel@tonic-gate 27657c478bd9Sstevel@tonic-gate /* 27667c478bd9Sstevel@tonic-gate * If this is an ELF error, it will have been generated by a support 27677c478bd9Sstevel@tonic-gate * object that has a dependency on libelf. ld.so.1 doesn't generate any 27687c478bd9Sstevel@tonic-gate * ELF error messages as it doesn't interact with libelf. Determine the 27697c478bd9Sstevel@tonic-gate * ELF error string. 27707c478bd9Sstevel@tonic-gate */ 27717c478bd9Sstevel@tonic-gate if ((overflow == 0) && (error == ERR_ELF)) { 27727c478bd9Sstevel@tonic-gate static int (*elfeno)() = 0; 27737c478bd9Sstevel@tonic-gate static const char *(*elfemg)(); 27747c478bd9Sstevel@tonic-gate const char *emsg; 27757c478bd9Sstevel@tonic-gate Rt_map *dlmp, *lmp = lml_rtld.lm_head; 27767c478bd9Sstevel@tonic-gate 27777c478bd9Sstevel@tonic-gate if (NEXT(lmp) && (elfeno == 0)) { 27787c478bd9Sstevel@tonic-gate if (((elfemg = (const char *(*)())dlsym_intn(RTLD_NEXT, 27797c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_SYM_ELFERRMSG), lmp, &dlmp)) == 0) || 27807c478bd9Sstevel@tonic-gate ((elfeno = (int (*)())dlsym_intn(RTLD_NEXT, 27817c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_SYM_ELFERRNO), lmp, &dlmp)) == 0)) 27827c478bd9Sstevel@tonic-gate elfeno = 0; 27837c478bd9Sstevel@tonic-gate } 27847c478bd9Sstevel@tonic-gate 27857c478bd9Sstevel@tonic-gate /* 27867c478bd9Sstevel@tonic-gate * Lookup the message; equivalent to elf_errmsg(elf_errno()). 27877c478bd9Sstevel@tonic-gate */ 27887c478bd9Sstevel@tonic-gate if (elfeno && ((emsg = (* elfemg)((* elfeno)())) != 0)) { 27897c478bd9Sstevel@tonic-gate prf.pr_cur--; 27907c478bd9Sstevel@tonic-gate if (bufprint(&prf, MSG_ORIG(MSG_STR_EMSGFOR2), 27917c478bd9Sstevel@tonic-gate emsg) == 0) 27927c478bd9Sstevel@tonic-gate overflow = 1; 27937c478bd9Sstevel@tonic-gate } 27947c478bd9Sstevel@tonic-gate } 27957c478bd9Sstevel@tonic-gate 27967c478bd9Sstevel@tonic-gate /* 27977c478bd9Sstevel@tonic-gate * Push out any message that's been built. Note, in the case of an 27987c478bd9Sstevel@tonic-gate * overflow condition, this message may be incomplete, in which case 27997c478bd9Sstevel@tonic-gate * make sure any partial string is null terminated. 28007c478bd9Sstevel@tonic-gate */ 28017c478bd9Sstevel@tonic-gate if (overflow) 28027c478bd9Sstevel@tonic-gate *(prf.pr_cur) = '\0'; 28037c478bd9Sstevel@tonic-gate if ((rtld_flags & (RT_FL_APPLIC | RT_FL_SILENCERR)) == 0) { 28047c478bd9Sstevel@tonic-gate *(prf.pr_cur - 1) = '\n'; 28057c478bd9Sstevel@tonic-gate (void) dowrite(&prf); 28067c478bd9Sstevel@tonic-gate } 28077c478bd9Sstevel@tonic-gate 28087c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_str(nextptr)); 28097c478bd9Sstevel@tonic-gate va_end(args); 28107c478bd9Sstevel@tonic-gate 28117c478bd9Sstevel@tonic-gate /* 28127c478bd9Sstevel@tonic-gate * Determine if there was insufficient space left in the buffer to 28137c478bd9Sstevel@tonic-gate * complete the message. If so, we'll have printed out as much as had 28147c478bd9Sstevel@tonic-gate * been processed if we're not yet executing the application. 28157c478bd9Sstevel@tonic-gate * Otherwise, there will be some debugging diagnostic indicating 28167c478bd9Sstevel@tonic-gate * as much of the error message as possible. Write out a final buffer 28177c478bd9Sstevel@tonic-gate * overflow diagnostic - unlocalized, so we don't chance more errors. 28187c478bd9Sstevel@tonic-gate */ 28197c478bd9Sstevel@tonic-gate if (overflow) { 28207c478bd9Sstevel@tonic-gate char *str = (char *)MSG_INTL(MSG_EMG_BUFOVRFLW); 28217c478bd9Sstevel@tonic-gate 28227c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SILENCERR) == 0) { 28237c478bd9Sstevel@tonic-gate lasterr = str; 28247c478bd9Sstevel@tonic-gate 28257c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_APPLIC) == 0) { 28267c478bd9Sstevel@tonic-gate (void) write(2, str, strlen(str)); 28277c478bd9Sstevel@tonic-gate (void) write(2, MSG_ORIG(MSG_STR_NL), 28287c478bd9Sstevel@tonic-gate MSG_STR_NL_SIZE); 28297c478bd9Sstevel@tonic-gate } 28307c478bd9Sstevel@tonic-gate } 28317c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_str(str)); 28327c478bd9Sstevel@tonic-gate 28337c478bd9Sstevel@tonic-gate lock = 0; 28347c478bd9Sstevel@tonic-gate nextptr = errbuf + ERRSIZE; 28357c478bd9Sstevel@tonic-gate return; 28367c478bd9Sstevel@tonic-gate } 28377c478bd9Sstevel@tonic-gate 28387c478bd9Sstevel@tonic-gate /* 28397c478bd9Sstevel@tonic-gate * If the application has started, then error messages are being saved 28407c478bd9Sstevel@tonic-gate * for retrieval by dlerror(), or possible flushing from rtldexit() in 28417c478bd9Sstevel@tonic-gate * the case of a fatal error. In this case, establish the next error 28427c478bd9Sstevel@tonic-gate * pointer. If we haven't started the application, the whole message 28437c478bd9Sstevel@tonic-gate * buffer can be reused. 28447c478bd9Sstevel@tonic-gate */ 28457c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_SILENCERR) == 0) { 28467c478bd9Sstevel@tonic-gate lasterr = nextptr; 28477c478bd9Sstevel@tonic-gate 28487c478bd9Sstevel@tonic-gate /* 28497c478bd9Sstevel@tonic-gate * Note, should we encounter an error such as ENOMEM, there may 28507c478bd9Sstevel@tonic-gate * be a number of the same error messages (ie. an operation 28517c478bd9Sstevel@tonic-gate * fails with ENOMEM, and then the attempts to construct the 28527c478bd9Sstevel@tonic-gate * error message itself, which incurs additional ENOMEM errors). 28537c478bd9Sstevel@tonic-gate * Compare any previous error message with the one we've just 28547c478bd9Sstevel@tonic-gate * created to prevent any duplication clutter. 28557c478bd9Sstevel@tonic-gate */ 28567c478bd9Sstevel@tonic-gate if ((rtld_flags & RT_FL_APPLIC) && 28577c478bd9Sstevel@tonic-gate ((prevptr == 0) || (strcmp(prevptr, nextptr) != 0))) { 28587c478bd9Sstevel@tonic-gate prevptr = nextptr; 28597c478bd9Sstevel@tonic-gate nextptr = prf.pr_cur; 28607c478bd9Sstevel@tonic-gate *nextptr = '\0'; 28617c478bd9Sstevel@tonic-gate } 28627c478bd9Sstevel@tonic-gate } 28637c478bd9Sstevel@tonic-gate lock = 0; 28647c478bd9Sstevel@tonic-gate } 28657c478bd9Sstevel@tonic-gate 28667c478bd9Sstevel@tonic-gate 28677c478bd9Sstevel@tonic-gate #if DEBUG 28687c478bd9Sstevel@tonic-gate /* 28697c478bd9Sstevel@tonic-gate * Provide assfail() for ASSERT() statements, 28707c478bd9Sstevel@tonic-gate * see <sys/debug.h> for further details. 28717c478bd9Sstevel@tonic-gate */ 28727c478bd9Sstevel@tonic-gate int 28737c478bd9Sstevel@tonic-gate assfail(const char *a, const char *f, int l) 28747c478bd9Sstevel@tonic-gate { 28757c478bd9Sstevel@tonic-gate (void) printf("assertion failed: %s, file: %s, line: %d\n", a, f, l); 28767c478bd9Sstevel@tonic-gate (void) _lwp_kill(_lwp_self(), SIGABRT); 28777c478bd9Sstevel@tonic-gate return (0); 28787c478bd9Sstevel@tonic-gate } 28797c478bd9Sstevel@tonic-gate #endif 28807c478bd9Sstevel@tonic-gate 28817c478bd9Sstevel@tonic-gate /* 28827c478bd9Sstevel@tonic-gate * Exit. If we arrive here with a non zero status it's because of a fatal 28837c478bd9Sstevel@tonic-gate * error condition (most commonly a relocation error). If the application has 28847c478bd9Sstevel@tonic-gate * already had control, then the actual fatal error message will have been 28857c478bd9Sstevel@tonic-gate * recorded in the dlerror() message buffer. Print the message before really 28867c478bd9Sstevel@tonic-gate * exiting. 28877c478bd9Sstevel@tonic-gate */ 28887c478bd9Sstevel@tonic-gate void 28897c478bd9Sstevel@tonic-gate rtldexit(Lm_list * lml, int status) 28907c478bd9Sstevel@tonic-gate { 28917c478bd9Sstevel@tonic-gate if (status) { 28927c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_APPLIC) { 28937c478bd9Sstevel@tonic-gate /* 28947c478bd9Sstevel@tonic-gate * If the error buffer has been used, write out all 28957c478bd9Sstevel@tonic-gate * pending messages - lasterr is simply a pointer to 28967c478bd9Sstevel@tonic-gate * the last message in this buffer. However, if the 28977c478bd9Sstevel@tonic-gate * buffer couldn't be created at all, lasterr points 28987c478bd9Sstevel@tonic-gate * to a constant error message string. 28997c478bd9Sstevel@tonic-gate */ 29007c478bd9Sstevel@tonic-gate if (*errbuf) { 29017c478bd9Sstevel@tonic-gate char *errptr = errbuf; 29027c478bd9Sstevel@tonic-gate char *errend = errbuf + ERRSIZE; 29037c478bd9Sstevel@tonic-gate 29047c478bd9Sstevel@tonic-gate while ((errptr < errend) && *errptr) { 29057c478bd9Sstevel@tonic-gate size_t size = strlen(errptr); 29067c478bd9Sstevel@tonic-gate (void) write(2, errptr, size); 29077c478bd9Sstevel@tonic-gate (void) write(2, MSG_ORIG(MSG_STR_NL), 29087c478bd9Sstevel@tonic-gate MSG_STR_NL_SIZE); 29097c478bd9Sstevel@tonic-gate errptr += (size + 1); 29107c478bd9Sstevel@tonic-gate } 29117c478bd9Sstevel@tonic-gate } 29127c478bd9Sstevel@tonic-gate if (lasterr && ((lasterr < errbuf) || 29137c478bd9Sstevel@tonic-gate (lasterr > (errbuf + ERRSIZE)))) { 29147c478bd9Sstevel@tonic-gate (void) write(2, lasterr, strlen(lasterr)); 29157c478bd9Sstevel@tonic-gate (void) write(2, MSG_ORIG(MSG_STR_NL), 29167c478bd9Sstevel@tonic-gate MSG_STR_NL_SIZE); 29177c478bd9Sstevel@tonic-gate } 29187c478bd9Sstevel@tonic-gate } 29197c478bd9Sstevel@tonic-gate leave(lml); 29207c478bd9Sstevel@tonic-gate (void) _lwp_kill(_lwp_self(), killsig); 29217c478bd9Sstevel@tonic-gate } 29227c478bd9Sstevel@tonic-gate _exit(status); 29237c478bd9Sstevel@tonic-gate } 29247c478bd9Sstevel@tonic-gate 29257c478bd9Sstevel@tonic-gate /* 29267c478bd9Sstevel@tonic-gate * Routines to co-ordinate the opening of /dev/zero and /proc. 29277c478bd9Sstevel@tonic-gate * dz_fd is exported for possible use by libld.so, and to insure it gets 29287c478bd9Sstevel@tonic-gate * closed on leaving ld.so.1. 29297c478bd9Sstevel@tonic-gate */ 29307c478bd9Sstevel@tonic-gate int dz_fd = FD_UNAVAIL; 29317c478bd9Sstevel@tonic-gate 29327c478bd9Sstevel@tonic-gate void 29337c478bd9Sstevel@tonic-gate dz_init(int fd) 29347c478bd9Sstevel@tonic-gate { 29357c478bd9Sstevel@tonic-gate dz_fd = fd; 29367c478bd9Sstevel@tonic-gate } 29377c478bd9Sstevel@tonic-gate 29387c478bd9Sstevel@tonic-gate 29397c478bd9Sstevel@tonic-gate /* 29407c478bd9Sstevel@tonic-gate * mmap() a page from MAP_ANON 29417c478bd9Sstevel@tonic-gate * 29427c478bd9Sstevel@tonic-gate * Note: MAP_ANON is only on Solaris8++, we use this routine to 29437c478bd9Sstevel@tonic-gate * not only mmap(MAP_ANON) but to also probe if it is available 29447c478bd9Sstevel@tonic-gate * on the current OS. 29457c478bd9Sstevel@tonic-gate */ 29467c478bd9Sstevel@tonic-gate Am_ret 29477c478bd9Sstevel@tonic-gate anon_map(caddr_t *addr, size_t len, int prot, int flags) 29487c478bd9Sstevel@tonic-gate { 29497c478bd9Sstevel@tonic-gate #if defined(MAP_ANON) 29507c478bd9Sstevel@tonic-gate static int noanon = 0; 29517c478bd9Sstevel@tonic-gate caddr_t va; 29527c478bd9Sstevel@tonic-gate 29537c478bd9Sstevel@tonic-gate if (noanon == 0) { 29547c478bd9Sstevel@tonic-gate if ((va = (caddr_t)mmap(*addr, len, prot, 29557c478bd9Sstevel@tonic-gate (flags | MAP_ANON), -1, 0)) != MAP_FAILED) { 29567c478bd9Sstevel@tonic-gate *addr = va; 29577c478bd9Sstevel@tonic-gate return (AM_OK); 29587c478bd9Sstevel@tonic-gate } 29597c478bd9Sstevel@tonic-gate 29607c478bd9Sstevel@tonic-gate if ((errno != EBADF) && (errno != EINVAL)) { 29617c478bd9Sstevel@tonic-gate int err = errno; 29627c478bd9Sstevel@tonic-gate eprintf(ERR_FATAL, MSG_INTL(MSG_SYS_MMAPANON), 29637c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_DEVZERO), strerror(err)); 29647c478bd9Sstevel@tonic-gate return (AM_ERROR); 29657c478bd9Sstevel@tonic-gate } else 29667c478bd9Sstevel@tonic-gate noanon = 1; 29677c478bd9Sstevel@tonic-gate } 29687c478bd9Sstevel@tonic-gate #endif 29697c478bd9Sstevel@tonic-gate return (AM_NOSUP); 29707c478bd9Sstevel@tonic-gate } 29717c478bd9Sstevel@tonic-gate 29727c478bd9Sstevel@tonic-gate /* 29737c478bd9Sstevel@tonic-gate * Map anonymous memory from /dev/zero, or via MAP_ANON. 29747c478bd9Sstevel@tonic-gate * 29757c478bd9Sstevel@tonic-gate * (MAP_ANON only appears on Solaris 8, so we need fall-back 29767c478bd9Sstevel@tonic-gate * behavior for older systems.) 29777c478bd9Sstevel@tonic-gate */ 29787c478bd9Sstevel@tonic-gate caddr_t 29797c478bd9Sstevel@tonic-gate dz_map(caddr_t addr, size_t len, int prot, int flags) 29807c478bd9Sstevel@tonic-gate { 29817c478bd9Sstevel@tonic-gate caddr_t va; 29827c478bd9Sstevel@tonic-gate int err; 29837c478bd9Sstevel@tonic-gate Am_ret amret; 29847c478bd9Sstevel@tonic-gate 29857c478bd9Sstevel@tonic-gate amret = anon_map(&addr, len, prot, flags); 29867c478bd9Sstevel@tonic-gate 29877c478bd9Sstevel@tonic-gate if (amret == AM_OK) 29887c478bd9Sstevel@tonic-gate return (addr); 29897c478bd9Sstevel@tonic-gate if (amret == AM_ERROR) 29907c478bd9Sstevel@tonic-gate return (MAP_FAILED); 29917c478bd9Sstevel@tonic-gate 29927c478bd9Sstevel@tonic-gate /* amret == AM_NOSUP -> fallback to a devzero mmaping */ 29937c478bd9Sstevel@tonic-gate 29947c478bd9Sstevel@tonic-gate if (dz_fd == FD_UNAVAIL) { 29957c478bd9Sstevel@tonic-gate if ((dz_fd = open(MSG_ORIG(MSG_PTH_DEVZERO), 29967c478bd9Sstevel@tonic-gate O_RDONLY)) == FD_UNAVAIL) { 29977c478bd9Sstevel@tonic-gate err = errno; 29987c478bd9Sstevel@tonic-gate eprintf(ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), 29997c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_DEVZERO), strerror(err)); 30007c478bd9Sstevel@tonic-gate return (MAP_FAILED); 30017c478bd9Sstevel@tonic-gate } 30027c478bd9Sstevel@tonic-gate } 30037c478bd9Sstevel@tonic-gate 30047c478bd9Sstevel@tonic-gate if ((va = mmap(addr, len, prot, flags, dz_fd, 0)) == MAP_FAILED) { 30057c478bd9Sstevel@tonic-gate err = errno; 30067c478bd9Sstevel@tonic-gate eprintf(ERR_FATAL, MSG_INTL(MSG_SYS_MMAP), 30077c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_DEVZERO), strerror(err)); 30087c478bd9Sstevel@tonic-gate } 30097c478bd9Sstevel@tonic-gate return (va); 30107c478bd9Sstevel@tonic-gate } 30117c478bd9Sstevel@tonic-gate 30127c478bd9Sstevel@tonic-gate static int pr_fd = FD_UNAVAIL; 30137c478bd9Sstevel@tonic-gate 30147c478bd9Sstevel@tonic-gate int 30157c478bd9Sstevel@tonic-gate pr_open() 30167c478bd9Sstevel@tonic-gate { 30177c478bd9Sstevel@tonic-gate char proc[16]; 30187c478bd9Sstevel@tonic-gate 30197c478bd9Sstevel@tonic-gate if (pr_fd == FD_UNAVAIL) { 30207c478bd9Sstevel@tonic-gate (void) snprintf(proc, 16, MSG_ORIG(MSG_FMT_PROC), 30217c478bd9Sstevel@tonic-gate (int)getpid()); 30227c478bd9Sstevel@tonic-gate if ((pr_fd = open(proc, O_RDONLY)) == FD_UNAVAIL) { 30237c478bd9Sstevel@tonic-gate int err = errno; 30247c478bd9Sstevel@tonic-gate 30257c478bd9Sstevel@tonic-gate eprintf(ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), proc, 30267c478bd9Sstevel@tonic-gate strerror(err)); 30277c478bd9Sstevel@tonic-gate } 30287c478bd9Sstevel@tonic-gate } 30297c478bd9Sstevel@tonic-gate return (pr_fd); 30307c478bd9Sstevel@tonic-gate } 30317c478bd9Sstevel@tonic-gate 30327c478bd9Sstevel@tonic-gate static int nu_fd = FD_UNAVAIL; 30337c478bd9Sstevel@tonic-gate 30347c478bd9Sstevel@tonic-gate caddr_t 30357c478bd9Sstevel@tonic-gate nu_map(caddr_t addr, size_t len, int prot, int flags) 30367c478bd9Sstevel@tonic-gate { 30377c478bd9Sstevel@tonic-gate caddr_t va; 30387c478bd9Sstevel@tonic-gate int err; 30397c478bd9Sstevel@tonic-gate 30407c478bd9Sstevel@tonic-gate if (nu_fd == FD_UNAVAIL) { 30417c478bd9Sstevel@tonic-gate if ((nu_fd = open(MSG_ORIG(MSG_PTH_DEVNULL), 30427c478bd9Sstevel@tonic-gate O_RDONLY)) == FD_UNAVAIL) { 30437c478bd9Sstevel@tonic-gate err = errno; 30447c478bd9Sstevel@tonic-gate eprintf(ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), 30457c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_DEVNULL), strerror(err)); 30467c478bd9Sstevel@tonic-gate return (MAP_FAILED); 30477c478bd9Sstevel@tonic-gate } 30487c478bd9Sstevel@tonic-gate } 30497c478bd9Sstevel@tonic-gate 30507c478bd9Sstevel@tonic-gate if ((va = (caddr_t)mmap(addr, len, prot, flags, nu_fd, 0)) == 30517c478bd9Sstevel@tonic-gate MAP_FAILED) { 30527c478bd9Sstevel@tonic-gate err = errno; 30537c478bd9Sstevel@tonic-gate eprintf(ERR_FATAL, MSG_INTL(MSG_SYS_MMAP), 30547c478bd9Sstevel@tonic-gate MSG_ORIG(MSG_PTH_DEVNULL), strerror(err)); 30557c478bd9Sstevel@tonic-gate } 30567c478bd9Sstevel@tonic-gate return (va); 30577c478bd9Sstevel@tonic-gate } 30587c478bd9Sstevel@tonic-gate 30597c478bd9Sstevel@tonic-gate /* 30607c478bd9Sstevel@tonic-gate * Generic entry point from user code - simply grabs a lock. 30617c478bd9Sstevel@tonic-gate */ 30627c478bd9Sstevel@tonic-gate int 30637c478bd9Sstevel@tonic-gate enter(void) 30647c478bd9Sstevel@tonic-gate { 30657c478bd9Sstevel@tonic-gate if (rt_bind_guard(THR_FLG_RTLD)) { 30667c478bd9Sstevel@tonic-gate (void) rt_mutex_lock(&rtldlock); 30677c478bd9Sstevel@tonic-gate return (1); 30687c478bd9Sstevel@tonic-gate } 30697c478bd9Sstevel@tonic-gate return (0); 30707c478bd9Sstevel@tonic-gate } 30717c478bd9Sstevel@tonic-gate 30727c478bd9Sstevel@tonic-gate /* 30737c478bd9Sstevel@tonic-gate * Generate diagnostics as to whether an object has been used. A symbolic 30747c478bd9Sstevel@tonic-gate * reference that gets bound to an object marks it as used. Dependencies that 30757c478bd9Sstevel@tonic-gate * are unused when RTLD_NOW is in effect should be removed from future builds 30767c478bd9Sstevel@tonic-gate * of an object. Dependencies that are unused without RTLD_NOW in effect are 30777c478bd9Sstevel@tonic-gate * candidates for lazy-loading. 30787c478bd9Sstevel@tonic-gate * Unreferenced objects identify objects that are defined as dependencies but 30797c478bd9Sstevel@tonic-gate * are unreferenced by the caller (they may however be referenced by other 30807c478bd9Sstevel@tonic-gate * objects within the process, and therefore don't qualify as completely unused. 30817c478bd9Sstevel@tonic-gate */ 30827c478bd9Sstevel@tonic-gate void 30837c478bd9Sstevel@tonic-gate unused(Lm_list *lml) 30847c478bd9Sstevel@tonic-gate { 30857c478bd9Sstevel@tonic-gate Rt_map *lmp; 30867c478bd9Sstevel@tonic-gate int nl = 0; 30877c478bd9Sstevel@tonic-gate Word tracing; 30887c478bd9Sstevel@tonic-gate 30897c478bd9Sstevel@tonic-gate /* 30907c478bd9Sstevel@tonic-gate * If we're not tracing unused references or dependencies, or debugging 30917c478bd9Sstevel@tonic-gate * there's nothing to do. 30927c478bd9Sstevel@tonic-gate */ 30937c478bd9Sstevel@tonic-gate tracing = lml->lm_flags & (LML_FLG_TRC_UNREF | LML_FLG_TRC_UNUSED); 30947c478bd9Sstevel@tonic-gate 30957c478bd9Sstevel@tonic-gate if ((tracing == 0) && (dbg_mask == 0)) 30967c478bd9Sstevel@tonic-gate return; 30977c478bd9Sstevel@tonic-gate 30987c478bd9Sstevel@tonic-gate /* 30997c478bd9Sstevel@tonic-gate * Traverse the link-maps looking for unreferenced or unused 31007c478bd9Sstevel@tonic-gate * dependencies. Ignore the first object on a link-map list, as this 31017c478bd9Sstevel@tonic-gate * is effectively always used. 31027c478bd9Sstevel@tonic-gate */ 31037c478bd9Sstevel@tonic-gate for (lmp = (Rt_map *)NEXT(lml->lm_head); lmp; 31047c478bd9Sstevel@tonic-gate lmp = (Rt_map *)NEXT(lmp)) { 31057c478bd9Sstevel@tonic-gate /* 31067c478bd9Sstevel@tonic-gate * If tracing unreferenced objects, or under debugging, 31077c478bd9Sstevel@tonic-gate * determine whether any of this objects callers haven't 31087c478bd9Sstevel@tonic-gate * referenced it. 31097c478bd9Sstevel@tonic-gate */ 31107c478bd9Sstevel@tonic-gate if ((tracing & LML_FLG_TRC_UNREF) || dbg_mask) { 31117c478bd9Sstevel@tonic-gate Bnd_desc ** bdpp; 31127c478bd9Sstevel@tonic-gate Aliste off; 31137c478bd9Sstevel@tonic-gate 31147c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(CALLERS(lmp), off, bdpp)) { 31157c478bd9Sstevel@tonic-gate Bnd_desc * bdp = *bdpp; 31167c478bd9Sstevel@tonic-gate Rt_map * clmp; 31177c478bd9Sstevel@tonic-gate 31187c478bd9Sstevel@tonic-gate if (bdp->b_flags & BND_REFER) 31197c478bd9Sstevel@tonic-gate continue; 31207c478bd9Sstevel@tonic-gate 31217c478bd9Sstevel@tonic-gate clmp = bdp->b_caller; 31227c478bd9Sstevel@tonic-gate if (FLAGS1(clmp) & FL1_RT_LDDSTUB) 31237c478bd9Sstevel@tonic-gate continue; 31247c478bd9Sstevel@tonic-gate 31257c478bd9Sstevel@tonic-gate if (nl++ == 0) { 31267c478bd9Sstevel@tonic-gate if (tracing & LML_FLG_TRC_UNREF) 31277c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_STR_NL)); 31287c478bd9Sstevel@tonic-gate else 31297c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_nl()); 31307c478bd9Sstevel@tonic-gate } 31317c478bd9Sstevel@tonic-gate 31327c478bd9Sstevel@tonic-gate if (tracing & LML_FLG_TRC_UNREF) 31337c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_UNREF_FMT), 31347c478bd9Sstevel@tonic-gate NAME(lmp), NAME(clmp)); 31357c478bd9Sstevel@tonic-gate else 31367c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_unused_unref(NAME(lmp), 31377c478bd9Sstevel@tonic-gate NAME(clmp))); 31387c478bd9Sstevel@tonic-gate } 31397c478bd9Sstevel@tonic-gate } 31407c478bd9Sstevel@tonic-gate 31417c478bd9Sstevel@tonic-gate /* 31427c478bd9Sstevel@tonic-gate * If tracing unused objects simply display those objects that 31437c478bd9Sstevel@tonic-gate * haven't been referenced by anyone. 31447c478bd9Sstevel@tonic-gate */ 31457c478bd9Sstevel@tonic-gate if (FLAGS1(lmp) & FL1_RT_USED) 31467c478bd9Sstevel@tonic-gate continue; 31477c478bd9Sstevel@tonic-gate 31487c478bd9Sstevel@tonic-gate if (nl++ == 0) { 31497c478bd9Sstevel@tonic-gate if (tracing) 31507c478bd9Sstevel@tonic-gate (void) printf(MSG_ORIG(MSG_STR_NL)); 31517c478bd9Sstevel@tonic-gate else 31527c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_nl()); 31537c478bd9Sstevel@tonic-gate } 31547c478bd9Sstevel@tonic-gate if (CYCGROUP(lmp)) { 31557c478bd9Sstevel@tonic-gate if (tracing) 31567c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_UNCYC_FMT), 31577c478bd9Sstevel@tonic-gate NAME(lmp), CYCGROUP(lmp)); 31587c478bd9Sstevel@tonic-gate else 3159*fb1354edSrie DBG_CALL(Dbg_unused_file(NAME(lmp), 0, 31607c478bd9Sstevel@tonic-gate CYCGROUP(lmp))); 31617c478bd9Sstevel@tonic-gate } else { 31627c478bd9Sstevel@tonic-gate if (tracing) 31637c478bd9Sstevel@tonic-gate (void) printf(MSG_INTL(MSG_LDD_UNUSED_FMT), 31647c478bd9Sstevel@tonic-gate NAME(lmp)); 31657c478bd9Sstevel@tonic-gate else 3166*fb1354edSrie DBG_CALL(Dbg_unused_file(NAME(lmp), 0, 0)); 31677c478bd9Sstevel@tonic-gate } 31687c478bd9Sstevel@tonic-gate } 31697c478bd9Sstevel@tonic-gate 31707c478bd9Sstevel@tonic-gate if (dbg_mask) 31717c478bd9Sstevel@tonic-gate DBG_CALL(Dbg_util_nl()); 31727c478bd9Sstevel@tonic-gate } 31737c478bd9Sstevel@tonic-gate 31747c478bd9Sstevel@tonic-gate /* 31757c478bd9Sstevel@tonic-gate * Initialization routine for the Fmap structure. If the fmap structure is 31767c478bd9Sstevel@tonic-gate * already in use, any mapping is released. The structure is then initialized 31777c478bd9Sstevel@tonic-gate * in preparation for further use. 31787c478bd9Sstevel@tonic-gate */ 31797c478bd9Sstevel@tonic-gate void 31807c478bd9Sstevel@tonic-gate fmap_setup() 31817c478bd9Sstevel@tonic-gate { 31827c478bd9Sstevel@tonic-gate #if defined(MAP_ALIGN) 31837c478bd9Sstevel@tonic-gate /* 31847c478bd9Sstevel@tonic-gate * If MAP_ALIGN is set, the fm_addr has been seeded with an alignment 31857c478bd9Sstevel@tonic-gate * value. Otherwise, if fm_addr is non-null it indicates a mapping that 31867c478bd9Sstevel@tonic-gate * should now be freed. 31877c478bd9Sstevel@tonic-gate */ 31887c478bd9Sstevel@tonic-gate if (fmap->fm_maddr && ((fmap->fm_mflags & MAP_ALIGN) == 0)) 31897c478bd9Sstevel@tonic-gate (void) munmap((caddr_t)fmap->fm_maddr, fmap->fm_msize); 31907c478bd9Sstevel@tonic-gate 31917c478bd9Sstevel@tonic-gate /* 31927c478bd9Sstevel@tonic-gate * Providing we haven't determined that this system doesn't support 31937c478bd9Sstevel@tonic-gate * MAP_ALIGN, initialize the mapping address with the default segment 31947c478bd9Sstevel@tonic-gate * alignment. 31957c478bd9Sstevel@tonic-gate */ 31967c478bd9Sstevel@tonic-gate if ((rtld_flags2 & RT_FL2_NOMALIGN) == 0) { 31977c478bd9Sstevel@tonic-gate fmap->fm_maddr = (char *)M_SEGM_ALIGN; 31987c478bd9Sstevel@tonic-gate fmap->fm_mflags = MAP_PRIVATE | MAP_ALIGN; 31997c478bd9Sstevel@tonic-gate } else { 32007c478bd9Sstevel@tonic-gate fmap->fm_maddr = 0; 32017c478bd9Sstevel@tonic-gate fmap->fm_mflags = MAP_PRIVATE; 32027c478bd9Sstevel@tonic-gate } 32037c478bd9Sstevel@tonic-gate #else 32047c478bd9Sstevel@tonic-gate if (fmap->fm_maddr) 32057c478bd9Sstevel@tonic-gate (void) munmap((caddr_t)fmap->fm_maddr, fmap->fm_msize); 3206*fb1354edSrie 32077c478bd9Sstevel@tonic-gate fmap->fm_maddr = 0; 32087c478bd9Sstevel@tonic-gate fmap->fm_mflags = MAP_PRIVATE; 32097c478bd9Sstevel@tonic-gate #endif 32107c478bd9Sstevel@tonic-gate 32117c478bd9Sstevel@tonic-gate fmap->fm_msize = syspagsz; 32127c478bd9Sstevel@tonic-gate fmap->fm_hwptr = 0; 32137c478bd9Sstevel@tonic-gate } 32147c478bd9Sstevel@tonic-gate 32157c478bd9Sstevel@tonic-gate /* 32167c478bd9Sstevel@tonic-gate * Generic cleanup routine called prior to returning control to the user. 32177c478bd9Sstevel@tonic-gate * Insures that any ld.so.1 specific file descriptors or temporary mapping are 32187c478bd9Sstevel@tonic-gate * released, and any locks dropped. 32197c478bd9Sstevel@tonic-gate */ 32207c478bd9Sstevel@tonic-gate void 32217c478bd9Sstevel@tonic-gate leave(Lm_list * lml) 32227c478bd9Sstevel@tonic-gate { 32237c478bd9Sstevel@tonic-gate /* 32247c478bd9Sstevel@tonic-gate * Alert the debuggers that the link-maps are consistent. 32257c478bd9Sstevel@tonic-gate */ 32267c478bd9Sstevel@tonic-gate if (lml) 32277c478bd9Sstevel@tonic-gate rd_event(lml, RD_DLACTIVITY, RT_CONSISTENT); 32287c478bd9Sstevel@tonic-gate 32297c478bd9Sstevel@tonic-gate if (dz_fd != FD_UNAVAIL) { 32307c478bd9Sstevel@tonic-gate (void) close(dz_fd); 32317c478bd9Sstevel@tonic-gate dz_fd = FD_UNAVAIL; 32327c478bd9Sstevel@tonic-gate } 32337c478bd9Sstevel@tonic-gate 32347c478bd9Sstevel@tonic-gate if (pr_fd != FD_UNAVAIL) { 32357c478bd9Sstevel@tonic-gate (void) close(pr_fd); 32367c478bd9Sstevel@tonic-gate pr_fd = FD_UNAVAIL; 32377c478bd9Sstevel@tonic-gate } 32387c478bd9Sstevel@tonic-gate 32397c478bd9Sstevel@tonic-gate if (nu_fd != FD_UNAVAIL) { 32407c478bd9Sstevel@tonic-gate (void) close(nu_fd); 32417c478bd9Sstevel@tonic-gate nu_fd = FD_UNAVAIL; 32427c478bd9Sstevel@tonic-gate } 32437c478bd9Sstevel@tonic-gate 32447c478bd9Sstevel@tonic-gate fmap_setup(); 32457c478bd9Sstevel@tonic-gate 32467c478bd9Sstevel@tonic-gate /* 32477c478bd9Sstevel@tonic-gate * Reinitialize error message pointer, and any overflow indication. 32487c478bd9Sstevel@tonic-gate */ 32497c478bd9Sstevel@tonic-gate nextptr = errbuf; 32507c478bd9Sstevel@tonic-gate prevptr = 0; 32517c478bd9Sstevel@tonic-gate 32527c478bd9Sstevel@tonic-gate /* 32537c478bd9Sstevel@tonic-gate * Don't drop our lock if we are running on our link-map list as 32547c478bd9Sstevel@tonic-gate * there's little point in doing so since we are single-threaded. 32557c478bd9Sstevel@tonic-gate * 32567c478bd9Sstevel@tonic-gate * LML_FLG_HOLDLOCK is set for: 32577c478bd9Sstevel@tonic-gate * *) The ld.so.1's link-map list. 32587c478bd9Sstevel@tonic-gate * *) The auditor's link-map if the environment is 32597c478bd9Sstevel@tonic-gate * libc/libthread un-unified. 32607c478bd9Sstevel@tonic-gate */ 32617c478bd9Sstevel@tonic-gate if (lml && (lml->lm_flags & LML_FLG_HOLDLOCK)) 32627c478bd9Sstevel@tonic-gate return; 32637c478bd9Sstevel@tonic-gate 32647c478bd9Sstevel@tonic-gate if (rt_bind_clear(0) & THR_FLG_RTLD) { 32657c478bd9Sstevel@tonic-gate (void) rt_mutex_unlock(&rtldlock); 32667c478bd9Sstevel@tonic-gate (void) rt_bind_clear(THR_FLG_RTLD); 32677c478bd9Sstevel@tonic-gate } 32687c478bd9Sstevel@tonic-gate } 32697c478bd9Sstevel@tonic-gate 32707c478bd9Sstevel@tonic-gate int 32717c478bd9Sstevel@tonic-gate callable(Rt_map * clmp, Rt_map * dlmp, Grp_hdl * ghp) 32727c478bd9Sstevel@tonic-gate { 32737c478bd9Sstevel@tonic-gate Alist * calp, * dalp; 32747c478bd9Sstevel@tonic-gate Aliste cnt1, cnt2; 32757c478bd9Sstevel@tonic-gate Grp_hdl ** ghpp1, ** ghpp2; 32767c478bd9Sstevel@tonic-gate 32777c478bd9Sstevel@tonic-gate /* 32787c478bd9Sstevel@tonic-gate * An object can always find symbols within itself. 32797c478bd9Sstevel@tonic-gate */ 32807c478bd9Sstevel@tonic-gate if (clmp == dlmp) 32817c478bd9Sstevel@tonic-gate return (1); 32827c478bd9Sstevel@tonic-gate 32837c478bd9Sstevel@tonic-gate /* 32847c478bd9Sstevel@tonic-gate * Don't allow an object to bind to an object that is being deleted 32857c478bd9Sstevel@tonic-gate * unless the binder is also being deleted. 32867c478bd9Sstevel@tonic-gate */ 32877c478bd9Sstevel@tonic-gate if ((FLAGS(dlmp) & FLG_RT_DELETE) && 32887c478bd9Sstevel@tonic-gate ((FLAGS(clmp) & FLG_RT_DELETE) == 0)) 32897c478bd9Sstevel@tonic-gate return (0); 32907c478bd9Sstevel@tonic-gate 32917c478bd9Sstevel@tonic-gate /* 32927c478bd9Sstevel@tonic-gate * An object with world access can always bind to an object with global 32937c478bd9Sstevel@tonic-gate * visibility. 32947c478bd9Sstevel@tonic-gate */ 32957c478bd9Sstevel@tonic-gate if ((MODE(clmp) & RTLD_WORLD) && (MODE(dlmp) & RTLD_GLOBAL)) 32967c478bd9Sstevel@tonic-gate return (1); 32977c478bd9Sstevel@tonic-gate 32987c478bd9Sstevel@tonic-gate /* 32997c478bd9Sstevel@tonic-gate * An object with local access can only bind to an object that is a 33007c478bd9Sstevel@tonic-gate * member of the same group. 33017c478bd9Sstevel@tonic-gate */ 33027c478bd9Sstevel@tonic-gate if (((MODE(clmp) & RTLD_GROUP) == 0) || 33037c478bd9Sstevel@tonic-gate ((calp = GROUPS(clmp)) == 0) || ((dalp = GROUPS(dlmp)) == 0)) 33047c478bd9Sstevel@tonic-gate return (0); 33057c478bd9Sstevel@tonic-gate 33067c478bd9Sstevel@tonic-gate /* 33077c478bd9Sstevel@tonic-gate * Traverse the list of groups the caller is a part of. 33087c478bd9Sstevel@tonic-gate */ 33097c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(calp, cnt1, ghpp1)) { 33107c478bd9Sstevel@tonic-gate /* 33117c478bd9Sstevel@tonic-gate * If we're testing for the ability of two objects to bind to 33127c478bd9Sstevel@tonic-gate * each other regardless of a specific group, ignore that group. 33137c478bd9Sstevel@tonic-gate */ 33147c478bd9Sstevel@tonic-gate if (ghp && (*ghpp1 == ghp)) 33157c478bd9Sstevel@tonic-gate continue; 33167c478bd9Sstevel@tonic-gate 33177c478bd9Sstevel@tonic-gate /* 33187c478bd9Sstevel@tonic-gate * Traverse the list of groups the destination is a part of. 33197c478bd9Sstevel@tonic-gate */ 33207c478bd9Sstevel@tonic-gate for (ALIST_TRAVERSE(dalp, cnt2, ghpp2)) { 33217c478bd9Sstevel@tonic-gate if (*ghpp1 == *ghpp2) 33227c478bd9Sstevel@tonic-gate return (1); 33237c478bd9Sstevel@tonic-gate } 33247c478bd9Sstevel@tonic-gate } 33257c478bd9Sstevel@tonic-gate return (0); 33267c478bd9Sstevel@tonic-gate } 33277c478bd9Sstevel@tonic-gate 33287c478bd9Sstevel@tonic-gate /* 33297c478bd9Sstevel@tonic-gate * Initialize the environ symbol. Traditionally this is carried out by the crt 33307c478bd9Sstevel@tonic-gate * code prior to jumping to main. However, init sections get fired before this 33317c478bd9Sstevel@tonic-gate * variable is initialized, so ld.so.1 sets this directly from the AUX vector 33327c478bd9Sstevel@tonic-gate * information. In addition, a process may have multiple link-maps (ld.so.1's 33337c478bd9Sstevel@tonic-gate * debugging and preloading objects), and link auditing, and each may need an 33347c478bd9Sstevel@tonic-gate * environ variable set. 33357c478bd9Sstevel@tonic-gate * 33367c478bd9Sstevel@tonic-gate * This routine is called after a relocation() pass, and thus provides for: 33377c478bd9Sstevel@tonic-gate * 33387c478bd9Sstevel@tonic-gate * o setting environ on the main link-map after the initial application and 33397c478bd9Sstevel@tonic-gate * its dependencies have been established. Typically environ lives in the 33407c478bd9Sstevel@tonic-gate * application (provided by its crt), but in older applications it might 33417c478bd9Sstevel@tonic-gate * be in libc. Who knows what's expected of applications not built on 33427c478bd9Sstevel@tonic-gate * Solaris. 33437c478bd9Sstevel@tonic-gate * 33447c478bd9Sstevel@tonic-gate * o after loading a new shared object. We can add shared objects to various 33457c478bd9Sstevel@tonic-gate * link-maps, and any link-map dependencies requiring getopt() require 33467c478bd9Sstevel@tonic-gate * their own environ. In addition, lazy loading might bring in the 334741072f3cSrie * supplier of environ (libc used to be a lazy loading candidate) after 334841072f3cSrie * the link-map has been established and other objects are present. 33497c478bd9Sstevel@tonic-gate * 33507c478bd9Sstevel@tonic-gate * This routine handles all these scenarios, without adding unnecessary overhead 33517c478bd9Sstevel@tonic-gate * to ld.so.1. 33527c478bd9Sstevel@tonic-gate */ 33537c478bd9Sstevel@tonic-gate void 33547c478bd9Sstevel@tonic-gate set_environ(Lm_list *lml) 33557c478bd9Sstevel@tonic-gate { 33567c478bd9Sstevel@tonic-gate Rt_map * dlmp; 33577c478bd9Sstevel@tonic-gate Sym * sym; 33587c478bd9Sstevel@tonic-gate Slookup sl; 33597c478bd9Sstevel@tonic-gate uint_t binfo; 33607c478bd9Sstevel@tonic-gate 33617c478bd9Sstevel@tonic-gate sl.sl_name = MSG_ORIG(MSG_SYM_ENVIRON); 33627c478bd9Sstevel@tonic-gate sl.sl_cmap = lml->lm_head; 33637c478bd9Sstevel@tonic-gate sl.sl_imap = lml->lm_head; 33647c478bd9Sstevel@tonic-gate sl.sl_hash = 0; 33657c478bd9Sstevel@tonic-gate sl.sl_rsymndx = 0; 33667c478bd9Sstevel@tonic-gate sl.sl_flags = LKUP_WEAK; 33677c478bd9Sstevel@tonic-gate 33687c478bd9Sstevel@tonic-gate if (sym = LM_LOOKUP_SYM(lml->lm_head)(&sl, &dlmp, &binfo)) { 336941072f3cSrie lml->lm_environ = (char ***)sym->st_value; 33707c478bd9Sstevel@tonic-gate 33717c478bd9Sstevel@tonic-gate if (!(FLAGS(dlmp) & FLG_RT_FIXED)) 337241072f3cSrie lml->lm_environ = 337341072f3cSrie (char ***)((uintptr_t)lml->lm_environ + 337441072f3cSrie (uintptr_t)ADDR(dlmp)); 337541072f3cSrie *(lml->lm_environ) = (char **)environ; 33767c478bd9Sstevel@tonic-gate lml->lm_flags |= LML_FLG_ENVIRON; 33777c478bd9Sstevel@tonic-gate } 33787c478bd9Sstevel@tonic-gate } 33797c478bd9Sstevel@tonic-gate 33807c478bd9Sstevel@tonic-gate /* 33817c478bd9Sstevel@tonic-gate * Determine whether we have a secure executable. Uid and gid information 33827c478bd9Sstevel@tonic-gate * can be passed to us via the aux vector, however if these values are -1 33837c478bd9Sstevel@tonic-gate * then use the appropriate system call to obtain them. 33847c478bd9Sstevel@tonic-gate * 33857c478bd9Sstevel@tonic-gate * o If the user is the root they can do anything 33867c478bd9Sstevel@tonic-gate * 33877c478bd9Sstevel@tonic-gate * o If the real and effective uid's don't match, or the real and 33887c478bd9Sstevel@tonic-gate * effective gid's don't match then this is determined to be a `secure' 33897c478bd9Sstevel@tonic-gate * application. 33907c478bd9Sstevel@tonic-gate * 33917c478bd9Sstevel@tonic-gate * This function is called prior to any dependency processing (see _setup.c). 33927c478bd9Sstevel@tonic-gate * Any secure setting will remain in effect for the life of the process. 33937c478bd9Sstevel@tonic-gate */ 33947c478bd9Sstevel@tonic-gate void 33957c478bd9Sstevel@tonic-gate security(uid_t uid, uid_t euid, gid_t gid, gid_t egid, int auxflags) 33967c478bd9Sstevel@tonic-gate { 33977c478bd9Sstevel@tonic-gate #ifdef AT_SUN_AUXFLAGS 33987c478bd9Sstevel@tonic-gate if (auxflags != -1) { 33997c478bd9Sstevel@tonic-gate if ((auxflags & AF_SUN_SETUGID) != 0) 34007c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_SECURE; 34017c478bd9Sstevel@tonic-gate return; 34027c478bd9Sstevel@tonic-gate } 34037c478bd9Sstevel@tonic-gate #endif 34047c478bd9Sstevel@tonic-gate if (uid == -1) 34057c478bd9Sstevel@tonic-gate uid = getuid(); 34067c478bd9Sstevel@tonic-gate if (uid) { 34077c478bd9Sstevel@tonic-gate if (euid == -1) 34087c478bd9Sstevel@tonic-gate euid = geteuid(); 34097c478bd9Sstevel@tonic-gate if (uid != euid) 34107c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_SECURE; 34117c478bd9Sstevel@tonic-gate else { 34127c478bd9Sstevel@tonic-gate if (gid == -1) 34137c478bd9Sstevel@tonic-gate gid = getgid(); 34147c478bd9Sstevel@tonic-gate if (egid == -1) 34157c478bd9Sstevel@tonic-gate egid = getegid(); 34167c478bd9Sstevel@tonic-gate if (gid != egid) 34177c478bd9Sstevel@tonic-gate rtld_flags |= RT_FL_SECURE; 34187c478bd9Sstevel@tonic-gate } 34197c478bd9Sstevel@tonic-gate } 34207c478bd9Sstevel@tonic-gate } 34217c478bd9Sstevel@tonic-gate 34227c478bd9Sstevel@tonic-gate /* 34237c478bd9Sstevel@tonic-gate * _REENTRANT code gets errno redefined to a function so provide for return 34247c478bd9Sstevel@tonic-gate * of the thread errno if applicable. This has no meaning in ld.so.1 which 34257c478bd9Sstevel@tonic-gate * is basically singled threaded. Provide the interface for our dependencies. 34267c478bd9Sstevel@tonic-gate */ 34277c478bd9Sstevel@tonic-gate #undef errno 34287c478bd9Sstevel@tonic-gate #pragma weak _private___errno = ___errno 34297c478bd9Sstevel@tonic-gate int * 34307c478bd9Sstevel@tonic-gate ___errno() 34317c478bd9Sstevel@tonic-gate { 34327c478bd9Sstevel@tonic-gate extern int errno; 34337c478bd9Sstevel@tonic-gate 34347c478bd9Sstevel@tonic-gate return (&errno); 34357c478bd9Sstevel@tonic-gate } 34367c478bd9Sstevel@tonic-gate 34377c478bd9Sstevel@tonic-gate /* 34387c478bd9Sstevel@tonic-gate * The interface with the c library which is supplied through libdl.so.1. 34397c478bd9Sstevel@tonic-gate * A non-null argument allows a function pointer array to be passed to us which 34407c478bd9Sstevel@tonic-gate * is used to re-initialize the linker libc table. 34417c478bd9Sstevel@tonic-gate */ 34427c478bd9Sstevel@tonic-gate void 34437c478bd9Sstevel@tonic-gate _ld_libc(void * ptr) 34447c478bd9Sstevel@tonic-gate { 34457c478bd9Sstevel@tonic-gate get_lcinterface(_caller(caller(), CL_EXECDEF), (Lc_interface *)ptr); 34467c478bd9Sstevel@tonic-gate } 34477c478bd9Sstevel@tonic-gate 34487c478bd9Sstevel@tonic-gate /* 34497c478bd9Sstevel@tonic-gate * Determine whether a symbol name should be demangled. 34507c478bd9Sstevel@tonic-gate */ 34517c478bd9Sstevel@tonic-gate const char * 34527c478bd9Sstevel@tonic-gate demangle(const char *name) 34537c478bd9Sstevel@tonic-gate { 34547c478bd9Sstevel@tonic-gate if (rtld_flags & RT_FL_DEMANGLE) 34557c478bd9Sstevel@tonic-gate return (conv_sym_dem(name)); 34567c478bd9Sstevel@tonic-gate else 34577c478bd9Sstevel@tonic-gate return (name); 34587c478bd9Sstevel@tonic-gate } 3459