1 /* Check whether section can be stripped.
2 Copyright (C) 2005, 2013 Red Hat, Inc.
3 This file is part of elfutils.
4
5 This file is free software; you can redistribute it and/or modify
6 it under the terms of either
7
8 * the GNU Lesser General Public License as published by the Free
9 Software Foundation; either version 3 of the License, or (at
10 your option) any later version
11
12 or
13
14 * the GNU General Public License as published by the Free
15 Software Foundation; either version 2 of the License, or (at
16 your option) any later version
17
18 or both in parallel, as here.
19
20 elfutils is distributed in the hope that it will be useful, but
21 WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23 General Public License for more details.
24
25 You should have received copies of the GNU General Public License and
26 the GNU Lesser General Public License along with this program. If
27 not, see <http://www.gnu.org/licenses/>. */
28
29 #ifdef HAVE_CONFIG_H
30 # include <config.h>
31 #endif
32
33 #include <string.h>
34 #include "libeblP.h"
35
36
37 bool
ebl_section_strip_p(Ebl * ebl,const GElf_Shdr * shdr,const char * name,bool remove_comment,bool only_remove_debug)38 ebl_section_strip_p (Ebl *ebl, const GElf_Shdr *shdr,
39 const char *name, bool remove_comment,
40 bool only_remove_debug)
41 {
42 /* If only debug information should be removed check the name. There
43 is unfortunately no other way. */
44 if (unlikely (only_remove_debug))
45 {
46 if (ebl_debugscn_p (ebl, name))
47 return true;
48
49 if (shdr->sh_type == SHT_RELA || shdr->sh_type == SHT_REL)
50 {
51 Elf_Scn *scn_l = elf_getscn (ebl->elf, (shdr)->sh_info);
52 GElf_Shdr shdr_mem_l;
53 GElf_Shdr *shdr_l = gelf_getshdr (scn_l, &shdr_mem_l);
54 if (shdr_l != NULL)
55 {
56 size_t shstrndx;
57 if (elf_getshdrstrndx (ebl->elf, &shstrndx) != 0)
58 return false;
59 const char *s_l = elf_strptr (ebl->elf, shstrndx,
60 shdr_l->sh_name);
61 if (s_l != NULL && ebl_debugscn_p (ebl, s_l))
62 return true;
63 }
64 }
65
66 return false;
67 }
68
69 return SECTION_STRIP_P (shdr, name, remove_comment);
70 }
71