1 /* $NetBSD: dwarf_str.c,v 1.5 2024/03/03 17:37:32 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 1.5 2024/03/03 17:37:32 christos Exp $");
32 ELFTC_VCSID("Id: dwarf_str.c 3295 2016-01-08 22:08:10Z jkoshy");
33
34 int
dwarf_get_str(Dwarf_Debug dbg,Dwarf_Off offset,char ** string,Dwarf_Signed * ret_strlen,Dwarf_Error * error)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