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1 : : /* Return raw section content. 2 : : Copyright (C) 1998, 1999, 2000, 2002, 2015 Red Hat, Inc. 3 : : This file is part of elfutils. 4 : : Contributed 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 <stdlib.h> 35 : : 36 : : #include "libelfP.h" 37 : : 38 : : 39 : : Elf_Data * 40 : 46493 : elf_rawdata (Elf_Scn *scn, Elf_Data *data) 41 : : { 42 [ + - - + ]: 46493 : if (scn == NULL || scn->elf->kind != ELF_K_ELF) 43 : : { 44 : 0 : __libelf_seterrno (ELF_E_INVALID_HANDLE); 45 : 0 : return NULL; 46 : : } 47 : : 48 : : /* If `data' is not NULL this means we are not addressing the initial 49 : : data in the file. But this also means this data is already read 50 : : (since otherwise it is not possible to have a valid `data' pointer) 51 : : and all the data structures are initialized as well. In this case 52 : : we can simply walk the list of data records. */ 53 [ + - ]: 46493 : if (data != NULL 54 [ + + - + ]: 46493 : || (scn->data_read != 0 && (scn->flags & ELF_F_FILEDATA) == 0)) 55 : : { 56 : : /* We don't allow accessing any but the data read from the file 57 : : as raw. */ 58 : 0 : __libelf_seterrno (ELF_E_DATA_MISMATCH); 59 : 0 : return NULL; 60 : : } 61 : : 62 : : /* If the data for this section was not yet initialized do it now. */ 63 [ + + ]: 46493 : if (scn->data_read == 0) 64 : : { 65 : : /* First thing we do is to read the data from the file. There is 66 : : always a file (or memory region) associated with this descriptor 67 : : since otherwise the `data_read' flag would be set. */ 68 [ - + ]: 45566 : if (__libelf_set_rawdata (scn) != 0) 69 : : /* Something went wrong. The error value is already set. */ 70 : : return NULL; 71 : : } 72 : : 73 : : /* Return the first data element in the list. */ 74 : 46493 : return &scn->rawdata.d; 75 : : } 76 : : INTDEF(elf_rawdata)