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
dwarf_get_str(Dwarf_Debug dbg,Dwarf_Off offset,char ** string,Dwarf_Signed * ret_strlen,Dwarf_Error * error)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