diff options
Diffstat (limited to 'src/libelf/elf32_checksum.c')
| -rw-r--r-- | src/libelf/elf32_checksum.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/src/libelf/elf32_checksum.c b/src/libelf/elf32_checksum.c deleted file mode 100644 index 4c598563..00000000 --- a/src/libelf/elf32_checksum.c +++ /dev/null @@ -1,169 +0,0 @@ -/* Compute simple checksum from permanent parts of the ELF file. - Copyright (C) 2002, 2003, 2004, 2005, 2009 Red Hat, Inc. - This file is part of elfutils. - Written by Ulrich Drepper <drepper@redhat.com>, 2002. - - This file is free software; you can redistribute it and/or modify - it under the terms of either - - * the GNU Lesser General Public License as published by the Free - Software Foundation; either version 3 of the License, or (at - your option) any later version - - or - - * the GNU General Public License as published by the Free - Software Foundation; either version 2 of the License, or (at - your option) any later version - - or both in parallel, as here. - - elfutils 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 - General Public License for more details. - - You should have received copies of the GNU General Public License and - the GNU Lesser General Public License along with this program. If - not, see <http://www.gnu.org/licenses/>. */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include <assert.h> -#include <endian.h> -#include <stdbool.h> -#include <stddef.h> -#include <string.h> - -#include "gelf.h" -#include "libelfP.h" -#include "elf-knowledge.h" - -#ifndef LIBELFBITS -# define LIBELFBITS 32 -#endif - - -#define process_block(crc, data) \ - __libelf_crc32 (crc, data->d_buf, data->d_size) - - -long int -elfw2(LIBELFBITS,checksum) (elf) - Elf *elf; -{ - size_t shstrndx; - Elf_Scn *scn; - long int result = 0; - unsigned char *ident; - bool same_byte_order; - - if (elf == NULL) - return -1l; - - /* Find the section header string table. */ - if (INTUSE(elf_getshdrstrndx) (elf, &shstrndx) < 0) - { - /* This can only happen if the ELF handle is not for real. */ - __libelf_seterrno (ELF_E_INVALID_HANDLE); - return -1l; - } - - /* Determine whether the byte order of the file and that of the host - is the same. */ - ident = elf->state.ELFW(elf,LIBELFBITS).ehdr->e_ident; - same_byte_order = ((ident[EI_DATA] == ELFDATA2LSB - && __BYTE_ORDER == __LITTLE_ENDIAN) - || (ident[EI_DATA] == ELFDATA2MSB - && __BYTE_ORDER == __BIG_ENDIAN)); - - /* If we don't have native byte order, we will likely need to - convert the data with xlate functions. We do it upfront instead - of relocking mid-iteration. */ - if (!likely (same_byte_order)) - rwlock_wrlock (elf->lock); - else - rwlock_rdlock (elf->lock); - - /* Iterate over all sections to find those which are not strippable. */ - scn = NULL; - while ((scn = INTUSE(elf_nextscn) (elf, scn)) != NULL) - { - GElf_Shdr shdr_mem; - GElf_Shdr *shdr; - Elf_Data *data; - - /* Get the section header. */ - shdr = INTUSE(gelf_getshdr) (scn, &shdr_mem); - if (shdr == NULL) - { - __libelf_seterrno (ELF_E_INVALID_SECTION_HEADER); - result = -1l; - goto out; - } - - if (SECTION_STRIP_P (shdr, - INTUSE(elf_strptr) (elf, shstrndx, shdr->sh_name), - true)) - /* The section can be stripped. Don't use it. */ - continue; - - /* Do not look at NOBITS sections. */ - if (shdr->sh_type == SHT_NOBITS) - continue; - - /* To compute the checksum we need to get to the data. For - repeatable results we must use the external format. The data - we get with 'elf'getdata' might be changed for endianess - reasons. Therefore we use 'elf_rawdata' if possible. But - this function can fail if the data was constructed by the - program. In this case we have to use 'elf_getdata' and - eventually convert the data to the external format. */ - data = INTUSE(elf_rawdata) (scn, NULL); - if (data != NULL) - { - /* The raw data is available. */ - result = process_block (result, data); - - /* Maybe the user added more data. These blocks cannot be - read using 'elf_rawdata'. Simply proceed with looking - for more data block with 'elf_getdata'. */ - } - - /* Iterate through the list of data blocks. */ - while ((data = INTUSE(elf_getdata) (scn, data)) != NULL) - /* If the file byte order is the same as the host byte order - process the buffer directly. If the data is just a stream - of bytes which the library will not convert we can use it - as well. */ - if (likely (same_byte_order) || data->d_type == ELF_T_BYTE) - result = process_block (result, data); - else - { - /* Convert the data to file byte order. */ - if (INTUSE(elfw2(LIBELFBITS,xlatetof)) (data, data, ident[EI_DATA]) - == NULL) - { - result = -1l; - goto out; - } - - result = process_block (result, data); - - /* And convert it back. */ - if (INTUSE(elfw2(LIBELFBITS,xlatetom)) (data, data, ident[EI_DATA]) - == NULL) - { - result = -1l; - goto out; - } - } - } - - out: - rwlock_unlock (elf->lock); - return result; -} -INTDEF(elfw2(LIBELFBITS,checksum)) |