67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/* Retrieve uninterpreted chunk of the file contents.
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Copyright (C) 2002 Red Hat, Inc.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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This program is Open Source software; you can redistribute it and/or
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modify it under the terms of the Open Software License version 1.0 as
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published by the Open Source Initiative.
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You should have received a copy of the Open Software License along
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with this program; if not, you may obtain a copy of the Open Software
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License version 1.0 from http://www.opensource.org/licenses/osl.php or
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by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
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3001 King Ranch Road, Ukiah, CA 95482. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <libelf.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "libelfP.h"
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char *
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gelf_rawchunk (Elf *elf, GElf_Off offset, GElf_Word size)
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{
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char * result;
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if (elf == NULL)
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{
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/* No valid descriptor. */
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__libelf_seterrno (ELF_E_INVALID_HANDLE);
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return NULL;
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}
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if (offset >= elf->maximum_size
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|| offset + size >= elf->maximum_size
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|| offset + size < offset)
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{
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/* Invalid request. */
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__libelf_seterrno (ELF_E_INVALID_OP);
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return NULL;
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}
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/* If the file is mmap'ed return an appropriate pointer. */
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if (elf->map_address != NULL)
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return (char *) elf->map_address + elf->start_offset + offset;
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/* We allocate the memory and read the data from the file. */
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result = (char *) malloc (size);
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if (result == NULL)
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__libelf_seterrno (ELF_E_NOMEM);
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else
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/* Read the file content. */
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if ((size_t) pread (elf->fildes, result, size, elf->start_offset + offset)
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!= size)
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{
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/* Something went wrong. */
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__libelf_seterrno (ELF_E_READ_ERROR);
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free (result);
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}
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return result;
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}
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