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1 : : /* Return number of sections in the ELF file.
2 : : Copyright (C) 2002, 2009 Red Hat, Inc.
3 : : This file is part of elfutils.
4 : : Written by Ulrich Drepper <drepper@redhat.com>, 2002.
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 <assert.h>
35 : : #include <gelf.h>
36 : : #include <stddef.h>
37 : :
38 : : #include "libelfP.h"
39 : :
40 : :
41 : : int
42 : 529 : __elf_getshdrnum_rdlock (elf, dst)
43 : : Elf *elf;
44 : : size_t *dst;
45 : : {
46 : 529 : int result = 0;
47 : : int idx;
48 : :
49 [ + - ]: 529 : if (elf == NULL)
50 : : return -1;
51 : :
52 [ - + ]: 529 : if (unlikely (elf->kind != ELF_K_ELF))
53 : : {
54 : 0 : __libelf_seterrno (ELF_E_INVALID_HANDLE);
55 : 0 : return -1;
56 : : }
57 : :
58 : 529 : idx = elf->state.elf.scns_last->cnt;
59 [ + + ]: 529 : if (idx != 0
60 [ - + ]: 2 : || (elf->state.elf.scns_last
61 : : != (elf->class == ELFCLASS32
62 : : || (offsetof (Elf, state.elf32.scns)
63 : : == offsetof (Elf, state.elf64.scns))
64 : 2 : ? &elf->state.elf32.scns : &elf->state.elf64.scns)))
65 : : /* There is at least one section. */
66 : 527 : *dst = 1 + elf->state.elf.scns_last->data[idx - 1].index;
67 : : else
68 : 529 : *dst = 0;
69 : :
70 : : return result;
71 : : }
72 : :
73 : : int
74 : 426 : elf_getshdrnum (elf, dst)
75 : : Elf *elf;
76 : : size_t *dst;
77 : : {
78 : : int result;
79 : :
80 [ + - ]: 426 : if (elf == NULL)
81 : : return -1;
82 : :
83 : : rwlock_rdlock (elf->lock);
84 : 426 : result = __elf_getshdrnum_rdlock (elf, dst);
85 : : rwlock_unlock (elf->lock);
86 : :
87 : 426 : return result;
88 : : }
89 : : /* Alias for the deprecated name. */
90 : : strong_alias (elf_getshdrnum, elf_getshnum)
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