67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
/* Control an ELF file desrciptor.
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Copyright (C) 1998, 1999, 2000, 2002 Red Hat, Inc.
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Written by Ulrich Drepper <drepper@redhat.com>, 1998.
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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 <unistd.h>
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#include "libelfP.h"
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int
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elf_cntl (Elf *elf, Elf_Cmd cmd)
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{
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int result = 0;
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if (elf == NULL)
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return -1;
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if (elf->fildes == -1)
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{
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__libelf_seterrno (ELF_E_INVALID_HANDLE);
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return -1;
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}
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rwlock_wrlock (elf->lock);
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switch (cmd)
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{
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case ELF_C_FDREAD:
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/* If not all of the file is in the memory read it now. */
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if (elf->map_address == NULL && __libelf_readall (elf) == NULL)
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{
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/* We were not able to read everything. */
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result = -1;
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break;
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}
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/* FALLTHROUGH */
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case ELF_C_FDDONE:
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/* Mark the file descriptor as not usable. */
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elf->fildes = -1;
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break;
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default:
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__libelf_seterrno (ELF_E_INVALID_CMD);
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result = -1;
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break;
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}
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rwlock_unlock (elf->lock);
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return result;
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}
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