usr/src/cmd/sgs/link_audit/common/symbindrep.c

   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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved.
  24  */
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <link.h>
  28
  29 #include "env.h"
  30
  31 static Elist    *bindto_list = NULL;
  32 static Elist    *bindfrom_list = NULL;
  33 static FILE     *output = stdout;
  34
  35
  36 uint_t
  37 la_version(uint_t version)
  38 {
  39         if (version < LAV_CURRENT) {
  40                 (void) fprintf(stderr,
  41                     "symbindrep.so: unexpected version: %d\n", version);
  42                 return (0);
  43         }
  44
  45         build_env_list(&bindto_list, (const char *)"SYMBINDREP_BINDTO");
  46         build_env_list(&bindfrom_list, (const char *)"SYMBINDREP_BINDFROM");
  47
  48 #ifdef _LP64
  49         (void) fprintf(output,
  50             "                            Symbol Bindings\n\n"
  51             "Referencing                  Defining\n"
  52             "Object                       Object                       Symbol\n"
  53             "---------------------------------------------------------------"
  54             "-------------------\n");
  55 #else
  56         (void) fprintf(output,
  57             "                    Symbol Bindings\n\n"
  58             "Referencing          Defining\n"
  59             "Object               Object               Symbol\n"
  60             "---------------------------------------------------------------"
  61             "---\n");
  62 #endif
  63         return (LAV_CURRENT);
  64 }
  65
  66 /* ARGSUSED1 */
  67 uint_t
  68 la_objopen(Link_map *lmp, Lmid_t lmid, uintptr_t *cookie)
  69 {
  70         uint_t          flags;
  71
  72         if ((bindto_list == NULL) ||
  73             (check_list(bindto_list, lmp->l_name)))
  74                 flags = LA_FLG_BINDTO;
  75         else
  76                 flags = 0;
  77
  78         if ((bindfrom_list == NULL) ||
  79             (check_list(bindfrom_list, lmp->l_name)))
  80                 flags |= LA_FLG_BINDFROM;
  81
  82         *cookie = (uintptr_t)lmp->l_name;
  83         return (flags);
  84 }
  85
  86
  87 /* ARGSUSED1 */
  88 #if     defined(_LP64)
  89 uintptr_t
  90 la_symbind64(Elf64_Sym *symp, uint_t symndx, uintptr_t *refcook,
  91         uintptr_t *defcook, uint_t *sb_flags, const char *sym_name)
  92 #else
  93 uintptr_t
  94 la_symbind32(Elf32_Sym *symp, uint_t symndx, uintptr_t *refcook,
  95         uintptr_t *defcook, uint_t *sb_flags)
  96 #endif
  97 {
  98 #if     !defined(_LP64)
  99         const char      *sym_name = (const char *)symp->st_name;
 100 #endif
 101
 102         (void) fprintf(output, "%-28s %-28s %s\n", (char *)(*refcook),
 103                 (char *)(*defcook), sym_name);
 104
 105         return (symp->st_value);
 106 }
 107
 108 /*
 109  * Since we only want to report on the symbol bindings for this
 110  * process and we *do not* want the actual program to run we exit
 111  * at this point.
 112  */
 113 /* ARGSUSED0 */
 114 void
 115 la_preinit(uintptr_t *cookie)
 116 {
 117         (void) fflush(output);
 118         exit(0);
 119 }