1 /* $NetBSD: dwarf_str.c,v 1.3 2016/02/20 02:43:41 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2009 Kai Wang 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "_libdwarf.h" 30 31 __RCSID("$NetBSD: dwarf_str.c,v 1.3 2016/02/20 02:43:41 christos Exp $"); 32 ELFTC_VCSID("Id: dwarf_str.c 3295 2016-01-08 22:08:10Z jkoshy "); 33 34 int 35 dwarf_get_str(Dwarf_Debug dbg, Dwarf_Off offset, char **string, 36 Dwarf_Signed *ret_strlen, Dwarf_Error *error) 37 { 38 Dwarf_Section *ds; 39 40 if (dbg == NULL || string == NULL || ret_strlen == NULL) { 41 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT); 42 return (DW_DLV_ERROR); 43 } 44 45 ds = _dwarf_find_section(dbg, ".debug_str"); 46 if (ds == NULL) { 47 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY); 48 return (DW_DLV_NO_ENTRY); 49 } 50 51 if (offset > ds->ds_size) { 52 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT); 53 return (DW_DLV_ERROR); 54 } 55 56 if (offset == ds->ds_size) { 57 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY); 58 return (DW_DLV_NO_ENTRY); 59 } 60 61 *string = (char *) ds->ds_data + offset; 62 *ret_strlen = strlen(*string); 63 64 return (DW_DLV_OK); 65 } 66