84 lines
2.6 KiB
Groff
84 lines
2.6 KiB
Groff
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.\" Copyright (c) 2006,2008 Joseph Koshy. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" This software is provided by Joseph Koshy ``as is'' and
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.\" any express or implied warranties, including, but not limited to, the
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.\" implied warranties of merchantability and fitness for a particular purpose
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.\" are disclaimed. in no event shall Joseph Koshy be liable
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.\" for any direct, indirect, incidental, special, exemplary, or consequential
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.\" damages (including, but not limited to, procurement of substitute goods
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.\" or services; loss of use, data, or profits; or business interruption)
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.\" however caused and on any theory of liability, whether in contract, strict
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.\" liability, or tort (including negligence or otherwise) arising in any way
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.\" out of the use of this software, even if advised of the possibility of
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.\" such damage.
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.\"
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.\" $Id: elf_getident.3 189 2008-07-20 10:38:08Z jkoshy $
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.\"
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.Dd July 3, 2006
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.Os
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.Dt ELF_GETIDENT 3
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.Sh NAME
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.Nm elf_getident
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.Nd return the initial bytes of a file
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.Sh LIBRARY
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.Lb libelf
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.Sh SYNOPSIS
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.In libelf.h
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.Ft char *
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.Fn elf_getident "Elf *elf" "size_t *sz"
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.Sh DESCRIPTION
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Function
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.Fn elf_getident
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returns a pointer to the initial bytes of the file for descriptor
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.Ar elf .
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.Pp
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If argument
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.Ar sz
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is non-null, the size of the identification area returned is written
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to the location pointed to by
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.Ar sz .
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This location is set to zero on errors.
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.Sh RETURN VALUES
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Function
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.Fn elf_getident
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will return a non-NULL pointer to the initial bytes of the file if
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successful, or NULL if an error condition is detected.
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.Sh ERRORS
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Function
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.Fn elf_getident
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can fail with the following errors:
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.Bl -tag -width "[ELF_E_RESOURCE]"
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.It Bq Er ELF_E_ARGUMENT
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A NULL value was passed in for argument
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.Ar elf .
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.It Bq Er ELF_E_SEQUENCE
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ELF descriptor
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.Ar elf
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was opened for writing and function
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.Fn elf_getident
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was called before a call to
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.Xr elf_update 3 .
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.El
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.Sh SEE ALSO
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.Xr elf 3 ,
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.Xr elf32_getehdr 3 ,
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.Xr elf64_getehdr 3 ,
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.Xr elf_getarhdr 3 ,
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.Xr elf_getbase 3 ,
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.Xr elf_getflags 3 ,
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.Xr elf_kind 3 ,
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.Xr elf_rawfile 3 ,
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.Xr elf_update 3 ,
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.Xr gelf 3 ,
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.Xr gelf_getclass 3 ,
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.Xr gelf_getehdr 3
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