1 /*- 2 * Copyright (c) 2009 Kai Wang 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include "_libdwarf.h" 28 29 ELFTC_VCSID("$Id: dwarf_str.c 3295 2016-01-08 22:08:10Z jkoshy $"); 30 31 int 32 dwarf_get_str(Dwarf_Debug dbg, Dwarf_Off offset, char **string, 33 Dwarf_Signed *ret_strlen, Dwarf_Error *error) 34 { 35 Dwarf_Section *ds; 36 37 if (dbg == NULL || string == NULL || ret_strlen == NULL) { 38 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT); 39 return (DW_DLV_ERROR); 40 } 41 42 ds = _dwarf_find_section(dbg, ".debug_str"); 43 if (ds == NULL) { 44 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY); 45 return (DW_DLV_NO_ENTRY); 46 } 47 48 if (offset > ds->ds_size) { 49 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT); 50 return (DW_DLV_ERROR); 51 } 52 53 if (offset == ds->ds_size) { 54 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY); 55 return (DW_DLV_NO_ENTRY); 56 } 57 58 *string = (char *) ds->ds_data + offset; 59 *ret_strlen = strlen(*string); 60 61 return (DW_DLV_OK); 62 } 63