Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame^] | 1 | /* Return raw section content. |
| 2 | Copyright (C) 1998, 1999, 2000, 2002 Red Hat, Inc. |
| 3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 1998. |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation, version 2. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU General Public License |
| 15 | along with this program; if not, write to the Free Software Foundation, |
| 16 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 17 | |
| 18 | #ifdef HAVE_CONFIG_H |
| 19 | # include <config.h> |
| 20 | #endif |
| 21 | |
| 22 | #include <stdlib.h> |
| 23 | |
| 24 | #include "libelfP.h" |
| 25 | |
| 26 | |
| 27 | Elf_Data * |
| 28 | elf_rawdata (scn, data) |
| 29 | Elf_Scn *scn; |
| 30 | Elf_Data *data; |
| 31 | { |
| 32 | if (scn == NULL || scn->elf->kind != ELF_K_ELF) |
| 33 | { |
| 34 | __libelf_seterrno (ELF_E_INVALID_HANDLE); |
| 35 | return NULL; |
| 36 | } |
| 37 | |
| 38 | /* If `data' is not NULL this means we are not addressing the initial |
| 39 | data in the file. But this also means this data is already read |
| 40 | (since otherwise it is not possible to have a valid `data' pointer) |
| 41 | and all the data structures are initialized as well. In this case |
| 42 | we can simply walk the list of data records. */ |
| 43 | if (data != NULL |
| 44 | || (scn->data_read != 0 && (scn->flags & ELF_F_FILEDATA) == 0)) |
| 45 | { |
| 46 | /* We don't allow accessing any but the data read from the file |
| 47 | as raw. */ |
| 48 | __libelf_seterrno (ELF_E_DATA_MISMATCH); |
| 49 | return NULL; |
| 50 | } |
| 51 | |
| 52 | /* If the data for this section was not yet initialized do it now. */ |
| 53 | if (scn->data_read == 0) |
| 54 | { |
| 55 | /* First thing we do is to read the data from the file. There is |
| 56 | always a file (or memory region) associated with this descriptor |
| 57 | since otherwise the `data_read' flag would be set. */ |
| 58 | if (__libelf_set_rawdata (scn) != 0) |
| 59 | /* Something went wrong. The error value is already set. */ |
| 60 | return NULL; |
| 61 | } |
| 62 | |
| 63 | /* Return the first data element in the list. */ |
| 64 | return &scn->rawdata.d; |
| 65 | } |
| 66 | INTDEF(elf_rawdata) |