1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1997-2001 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 30 #include <stdio.h> 31 #include <stdlib.h> 32 #include <link.h> 33 34 #include "env.h" 35 36 static Elist *bindto_list = 0; 37 static Elist *bindfrom_list = 0; 38 static FILE *output = stdout; 39 40 41 uint_t 42 la_version(uint_t version) 43 { 44 if (version < LAV_CURRENT) { 45 (void) fprintf(stderr, 46 "symbindrep.so: unexpected version: %d\n", 47 version); 48 return (0); 49 } 50 51 build_env_list(&bindto_list, (const char *)"SYMBINDREP_BINDTO"); 52 build_env_list(&bindfrom_list, (const char *)"SYMBINDREP_BINDFROM"); 53 54 (void) fprintf(output, 55 #ifdef _LP64 56 " Symbol Bindings\n\n" 57 "Referencing Defining\n" 58 "Object Object Symbol\n" 59 /* CSTYLED */ 60 "----------------------------------------------------------------------------------\n"); 61 #else 62 " Symbol Bindings\n\n" 63 "Referencing Defining\n" 64 "Object Object Symbol\n" 65 "------------------------------------------------------------------\n"); 66 #endif 67 return (LAV_CURRENT); 68 } 69 70 71 /* ARGSUSED1 */ 72 uint_t 73 la_objopen(Link_map *lmp, Lmid_t lmid, uintptr_t *cookie) 74 { 75 uint_t flags; 76 77 if ((bindto_list == 0) || 78 (check_list(bindto_list, lmp->l_name))) 79 flags = LA_FLG_BINDTO; 80 else 81 flags = 0; 82 83 if ((bindfrom_list == 0) || 84 (check_list(bindfrom_list, lmp->l_name))) 85 flags |= LA_FLG_BINDFROM; 86 87 *cookie = (uintptr_t)lmp->l_name; 88 return (flags); 89 } 90 91 92 /* ARGSUSED1 */ 93 #if defined(_LP64) 94 uintptr_t 95 la_symbind64(Elf64_Sym *symp, uint_t symndx, uintptr_t *refcook, 96 uintptr_t *defcook, uint_t *sb_flags, const char *sym_name) 97 #else 98 uintptr_t 99 la_symbind32(Elf32_Sym *symp, uint_t symndx, uintptr_t *refcook, 100 uintptr_t *defcook, uint_t *sb_flags) 101 #endif 102 { 103 #if !defined(_LP64) 104 const char *sym_name = (const char *)symp->st_name; 105 #endif 106 107 (void) fprintf(output, "%-28s %-28s %s\n", (char *)(*refcook), 108 (char *)(*defcook), sym_name); 109 110 return (symp->st_value); 111 } 112 113 /* 114 * Since we only want to report on the symbol bindings for this 115 * process and we *do not* want the actual program to run we exit 116 * at this point. 117 */ 118 /* ARGSUSED0 */ 119 void 120 la_preinit(uintptr_t *cookie) 121 { 122 (void) fflush(output); 123 exit(0); 124 } 125