1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235
|
/*
Copyright (C) 2000-2006 Silicon Graphics, Inc. All Rights Reserved.
Portions Copyright 2007-2010 Sun Microsystems, Inc. All rights reserved.
Portions Copyright 2008-2010 Arxan Technologies, Inc. All rights reserved.
Portions Copyright 2011-2020 David Anderson. All rights reserved.
Portions Copyright 2012 SN Systems Ltd. All rights reserved.
This program is free software; you can redistribute it
and/or modify it under the terms of version 2.1 of the
GNU Lesser General Public License as published by the Free
Software Foundation.
This program is distributed in the hope that it would be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.
Further, this software is distributed without any warranty
that it is free of the rightful claim of any third person
regarding infringement or the like. Any license provided
herein, whether implied or otherwise, applies only to this
software file. Patent licenses, if any, provided herein
do not apply to combinations of this program with other
software, or any other product whatsoever.
You should have received a copy of the GNU Lesser General
Public License along with this program; if not, write the
Free Software Foundation, Inc., 51 Franklin Street - Fifth
Floor, Boston MA 02110-1301, USA.
*/
#include "config.h"
#ifdef HAVE_LIBELF_H
#include <libelf.h>
#else
#ifdef HAVE_LIBELF_LIBELF_H
#include <libelf/libelf.h>
#endif
#endif
#include <stdio.h>
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif /* HAVE_SYS_STAT_H */
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h> /* open(), off_t, size_t, ssize_t */
#endif /* HAVE_SYS_TYPES_H */
#ifdef HAVE_STRING_H
#include <string.h>
#endif /* HAVE_STRING_H */
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif /* HAVE_STDLIB_H */
#include "dwarf_incl.h"
#include "dwarf_error.h"
#include "dwarf_elf_access.h"
#include "dwarf_object_detector.h"
#define DWARF_DBG_ERROR(dbg,errval,retval) \
_dwarf_error(dbg, error, errval); return(retval);
#define FALSE 0
#define TRUE 1
/* New March 2017 */
int
dwarf_elf_init_b(
#ifndef DWARF_WITH_LIBELF
UNUSEDARG dwarf_elf_handle elf_file_pointer,
UNUSEDARG Dwarf_Unsigned access,
UNUSEDARG unsigned group_number,
UNUSEDARG Dwarf_Handler errhand,
UNUSEDARG Dwarf_Ptr errarg,
UNUSEDARG Dwarf_Debug * ret_dbg,
#else
dwarf_elf_handle elf_file_pointer,
Dwarf_Unsigned access,
unsigned group_number,
Dwarf_Handler errhand,
Dwarf_Ptr errarg,
Dwarf_Debug * ret_dbg,
#endif /* DWARF_WITH_LIBELF */
Dwarf_Error * error)
{
#ifndef DWARF_WITH_LIBELF
DWARF_DBG_ERROR(NULL, DW_DLE_NO_ELF_SUPPORT, DW_DLV_ERROR);
#else /* DWARF_WITH_LIBELF */
Dwarf_Obj_Access_Interface *binary_interface = 0;
int res = DW_DLV_OK;
int localerrnum = 0;
int libdwarf_owns_elf = FALSE;
if (!ret_dbg) {
DWARF_DBG_ERROR(NULL,DW_DLE_DWARF_INIT_DBG_NULL,DW_DLV_ERROR);
}
if (access != DW_DLC_READ) {
DWARF_DBG_ERROR(NULL, DW_DLE_INIT_ACCESS_WRONG, DW_DLV_ERROR);
}
/* This allocates and fills in *binary_interface. */
res = dwarf_elf_object_access_init(
elf_file_pointer,
libdwarf_owns_elf,
&binary_interface,
&localerrnum);
if (res != DW_DLV_OK) {
if (res == DW_DLV_NO_ENTRY) {
return res;
}
DWARF_DBG_ERROR(NULL, localerrnum, DW_DLV_ERROR);
}
/* allocates and initializes Dwarf_Debug */
res = dwarf_object_init_b(binary_interface, errhand, errarg,
group_number,
ret_dbg, error);
if (res != DW_DLV_OK){
dwarf_elf_object_access_finish(binary_interface);
return res;
}
(*ret_dbg)->de_using_libelf = TRUE;
res = dwarf_add_debuglink_global_path(*ret_dbg,
"/usr/lib/debug",error);
if (res != DW_DLV_OK){
dwarf_elf_object_access_finish(binary_interface);
return res;
}
/* DBG known */
return res;
#endif /* DWARF_WITH_LIBELF */
}
int
dwarf_elf_init(
#ifndef DWARF_WITH_LIBELF
UNUSEDARG dwarf_elf_handle elf_file_pointer,
UNUSEDARG Dwarf_Unsigned access,
UNUSEDARG Dwarf_Handler errhand,
UNUSEDARG Dwarf_Ptr errarg,
UNUSEDARG Dwarf_Debug * ret_dbg,
#else
dwarf_elf_handle elf_file_pointer,
Dwarf_Unsigned access,
Dwarf_Handler errhand,
Dwarf_Ptr errarg,
Dwarf_Debug * ret_dbg,
#endif
Dwarf_Error * error)
{
#ifndef DWARF_WITH_LIBELF
DWARF_DBG_ERROR(NULL, DW_DLE_NO_ELF_SUPPORT, DW_DLV_ERROR);
#else /* DWARF_WITH_LIBELF */
int res = 0;
res = dwarf_elf_init_b(elf_file_pointer,
DW_GROUPNUMBER_ANY,
access,errhand,errarg,ret_dbg,error);
return res;
#endif /* DWARF_WITH_LIBELF */
}
int
_dwarf_elf_setup(
#ifndef DWARF_WITH_LIBELF
UNUSEDARG int fd,
UNUSEDARG char *path,
UNUSEDARG unsigned ftype,
UNUSEDARG unsigned endian,
UNUSEDARG unsigned offsetsize,
UNUSEDARG size_t filesize,
UNUSEDARG Dwarf_Unsigned access,
UNUSEDARG unsigned groupnumber,
UNUSEDARG Dwarf_Handler errhand,
UNUSEDARG Dwarf_Ptr errarg,
UNUSEDARG Dwarf_Debug *dbg,
#else
int fd,
UNUSEDARG char *path,
UNUSEDARG unsigned ftype,
UNUSEDARG unsigned endian,
UNUSEDARG unsigned offsetsize,
size_t filesize,
UNUSEDARG Dwarf_Unsigned access,
unsigned groupnumber,
Dwarf_Handler errhand,
Dwarf_Ptr errarg,
Dwarf_Debug *dbg,
#endif /* DWARF_WITH_LIBELF */
Dwarf_Error *error)
{
#ifndef DWARF_WITH_LIBELF
DWARF_DBG_ERROR(NULL, DW_DLE_PRODUCER_CODE_NOT_AVAILABLE, DW_DLV_ERROR);
#else /* DWARF_WITH_LIBELF */
Elf_Cmd what_kind_of_elf_read = ELF_C_READ;
Dwarf_Obj_Access_Interface *binary_interface = 0;
int res = DW_DLV_OK;
int localerrnum = 0;
int libdwarf_owns_elf = TRUE;
dwarf_elf_handle elf_file_pointer = 0;
elf_version(EV_CURRENT);
elf_file_pointer = elf_begin(fd, what_kind_of_elf_read, 0);
if (elf_file_pointer == NULL) {
DWARF_DBG_ERROR(NULL, DW_DLE_ELF_BEGIN_ERROR, DW_DLV_ERROR);
}
/* Sets up elf access function pointers. */
res = dwarf_elf_object_access_init(
elf_file_pointer,
libdwarf_owns_elf,
&binary_interface,
&localerrnum);
if (res != DW_DLV_OK) {
if (res == DW_DLV_NO_ENTRY) {
return res;
}
DWARF_DBG_ERROR(NULL, localerrnum, DW_DLV_ERROR);
}
/* allocates and initializes Dwarf_Debug */
res = dwarf_object_init_b(binary_interface, errhand, errarg,
groupnumber,
dbg, error);
if (res != DW_DLV_OK){
dwarf_elf_object_access_finish(binary_interface);
return res;
}
(*dbg)->de_filesize = filesize;
(*dbg)->de_using_libelf = TRUE;
res = dwarf_add_debuglink_global_path(*dbg,
"/usr/lib/debug",error);
if (res != DW_DLV_OK){
dwarf_elf_object_access_finish(binary_interface);
}
return res;
#endif /* DWARF_WITH_LIBELF */
}
|