50 lines
1.5 KiB
C
Executable File
50 lines
1.5 KiB
C
Executable File
/*
|
|
strptr.c - implementation of the elf_strptr(3) function.
|
|
Copyright (C) 1995 Michael Riepe <riepe@ifwsn4.ifw.uni-hannover.de>
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include <private.h>
|
|
|
|
char*
|
|
elf_strptr(Elf *elf, size_t section, size_t offset) {
|
|
Elf_Scn *scn;
|
|
Elf_Data *sd;
|
|
|
|
if (!elf) {
|
|
return NULL;
|
|
}
|
|
elf_assert(elf->e_magic == ELF_MAGIC);
|
|
if (!(scn = elf_getscn(elf, section))) {
|
|
return NULL;
|
|
}
|
|
if (scn->s_type != SHT_STRTAB) {
|
|
seterr(ERROR_NOSTRTAB);
|
|
return NULL;
|
|
}
|
|
if (offset >= 0 && offset < scn->s_size) {
|
|
sd = NULL;
|
|
while ((sd = elf_getdata(scn, sd))) {
|
|
if (sd->d_buf && offset >= (size_t)sd->d_off
|
|
&& offset < (size_t)sd->d_off + sd->d_size) {
|
|
return (char*)sd->d_buf + (offset - sd->d_off);
|
|
}
|
|
}
|
|
}
|
|
seterr(ERROR_BADSTROFF);
|
|
return NULL;
|
|
}
|