/src/elfutils/libelf/gelf_getshdr.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* Return section header. |
2 | | Copyright (C) 1998, 1999, 2000, 2002, 2015 Red Hat, Inc. |
3 | | This file is part of elfutils. |
4 | | Written by Ulrich Drepper <drepper@redhat.com>, 1998. |
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 <gelf.h> |
35 | | #include <string.h> |
36 | | |
37 | | #include "libelfP.h" |
38 | | |
39 | | |
40 | | GElf_Shdr * |
41 | | gelf_getshdr (Elf_Scn *scn, GElf_Shdr *dst) |
42 | 5.02k | { |
43 | 5.02k | GElf_Shdr *result = NULL; |
44 | | |
45 | 5.02k | if (scn == NULL) |
46 | 0 | return NULL; |
47 | | |
48 | 5.02k | if (dst == NULL) |
49 | 0 | { |
50 | 0 | __libelf_seterrno (ELF_E_INVALID_OPERAND); |
51 | 0 | return NULL; |
52 | 0 | } |
53 | | |
54 | 5.02k | rwlock_rdlock (scn->elf->lock); |
55 | | |
56 | 5.02k | if (scn->elf->class == ELFCLASS32) |
57 | 1.53k | { |
58 | | /* Copy the elements one-by-one. */ |
59 | 1.53k | Elf32_Shdr *shdr |
60 | 1.53k | = scn->shdr.e32 ?: __elf32_getshdr_rdlock (scn); |
61 | | |
62 | 1.53k | if (shdr == NULL) |
63 | 0 | { |
64 | 0 | __libelf_seterrno (ELF_E_INVALID_OPERAND); |
65 | 0 | goto out; |
66 | 0 | } |
67 | | |
68 | 1 | #define COPY(name) \ |
69 | 10 | dst->name = shdr->name |
70 | 1 | COPY (sh_name); |
71 | 1 | COPY (sh_type); |
72 | 1 | COPY (sh_flags); |
73 | 1 | COPY (sh_addr); |
74 | 1 | COPY (sh_offset); |
75 | 1 | COPY (sh_size); |
76 | 1 | COPY (sh_link); |
77 | 1 | COPY (sh_info); |
78 | 1 | COPY (sh_addralign); |
79 | 1 | COPY (sh_entsize); |
80 | | |
81 | 1 | result = dst; |
82 | 1 | } |
83 | 3.48k | else |
84 | 3.48k | { |
85 | 3.48k | Elf64_Shdr *shdr |
86 | 3.48k | = scn->shdr.e64 ?: __elf64_getshdr_rdlock (scn); |
87 | | |
88 | 3.48k | if (shdr == NULL) |
89 | 0 | { |
90 | 0 | __libelf_seterrno (ELF_E_INVALID_OPERAND); |
91 | 0 | goto out; |
92 | 0 | } |
93 | | |
94 | | /* We only have to copy the data. */ |
95 | 4 | result = memcpy (dst, shdr, sizeof (GElf_Shdr)); |
96 | 4 | } |
97 | | |
98 | 5.02k | out: |
99 | 5.02k | rwlock_unlock (scn->elf->lock); |
100 | | |
101 | 5.02k | return result; |
102 | 5.02k | } |
103 | | INTDEF(gelf_getshdr) |