Branch data Line data Source code
1 : : /* Get string.
2 : : Copyright (C) 2004 Red Hat, Inc.
3 : : This file is part of elfutils.
4 : : Written by Ulrich Drepper <drepper@redhat.com>, 2004.
5 : :
6 : : This file is free software; you can redistribute it and/or modify
7 : : it under the terms of either
8 : :
9 : : * the GNU Lesser General Public License as published by the Free
10 : : Software Foundation; either version 3 of the License, or (at
11 : : your option) any later version
12 : :
13 : : or
14 : :
15 : : * the GNU General Public License as published by the Free
16 : : Software Foundation; either version 2 of the License, or (at
17 : : your option) any later version
18 : :
19 : : or both in parallel, as here.
20 : :
21 : : elfutils is distributed in the hope that it will be useful, but
22 : : WITHOUT ANY WARRANTY; without even the implied warranty of
23 : : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
24 : : General Public License for more details.
25 : :
26 : : You should have received copies of the GNU General Public License and
27 : : the GNU Lesser General Public License along with this program. If
28 : : not, see <http://www.gnu.org/licenses/>. */
29 : :
30 : : #ifdef HAVE_CONFIG_H
31 : : # include <config.h>
32 : : #endif
33 : :
34 : : #include <string.h>
35 : : #include "libdwP.h"
36 : :
37 : :
38 : : const char *
39 : 870 : dwarf_getstring (Dwarf *dbg, Dwarf_Off offset, size_t *lenp)
40 : : {
41 [ + + ]: 870 : if (dbg == NULL)
42 : : return NULL;
43 : :
44 [ - + ]: 869 : if (dbg->sectiondata[IDX_debug_str] == NULL
45 [ + + ]: 869 : || offset >= dbg->sectiondata[IDX_debug_str]->d_size)
46 : : {
47 : 1 : no_string:
48 : 1 : __libdw_seterrno (DWARF_E_NO_STRING);
49 : 1 : return NULL;
50 : : }
51 : :
52 : 868 : const char *result = ((const char *) dbg->sectiondata[IDX_debug_str]->d_buf
53 : : + offset);
54 : 868 : const char *endp = memchr (result, '\0',
55 : : dbg->sectiondata[IDX_debug_str]->d_size - offset);
56 [ - + ]: 868 : if (endp == NULL)
57 : : goto no_string;
58 : :
59 [ + + ]: 868 : if (lenp != NULL)
60 : 100 : *lenp = endp - result;
61 : :
62 : : return result;
63 : : }
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