.\" Copyright (c) 2006,2008 Joseph Koshy.  All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\"
.\" This software is provided by Joseph Koshy ``as is'' and
.\" any express or implied warranties, including, but not limited to, the
.\" implied warranties of merchantability and fitness for a particular purpose
.\" are disclaimed.  in no event shall Joseph Koshy be liable
.\" for any direct, indirect, incidental, special, exemplary, or consequential
.\" damages (including, but not limited to, procurement of substitute goods
.\" or services; loss of use, data, or profits; or business interruption)
.\" however caused and on any theory of liability, whether in contract, strict
.\" liability, or tort (including negligence or otherwise) arising in any way
.\" out of the use of this software, even if advised of the possibility of
.\" such damage.
.\"
.\" $Id: gelf_fsize.3,v 1.1 2019/02/01 05:27:37 jsg Exp $
.\"
.Dd February 5, 2008
.Dt GELF_FSIZE 3
.Os
.Sh NAME
.Nm gelf_fsize ,
.Nm elf32_fsize ,
.Nm elf64_fsize
.Nd return the size of a file type
.Sh LIBRARY
.Lb libelf
.Sh SYNOPSIS
.In libelf.h
.Ft size_t
.Fn elf32_fsize "Elf_Type type" "size_t count" "unsigned int version"
.Ft size_t
.Fn elf64_fsize "Elf_Type type" "size_t count" "unsigned int version"
.In gelf.h
.Ft size_t
.Fn gelf_fsize "Elf *elf" "Elf_Type type" "size_t count" "unsigned int version"
.Sh DESCRIPTION
These functions return the size in bytes of the file representation of
.Ar count
numbers of objects of ELF type
.Ar type .
For ELF types that are of variable length, these functions return a
size of one byte.
.Pp
Functions
.Fn elf32_fsize
and
.Fn elf64_fsize
return sizes for files of class
.Dv ELFCLASS32
and
.Dv ELFCLASS64
respectively.
Function
.Fn gelf_fsize
returns the size for the class of ELF descriptor
.Ar elf .
.Sh RETURN VALUES
These functions return a non-zero value in case of success, or zero in
case of an error.
.Sh ERRORS
These functions may fail with:
.Bl -tag -width "[ELF_E_RESOURCE]"
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar elf
was NULL in a call to
.Fn gelf_fsize .
.It Bq Er ELF_E_ARGUMENT
ELF descriptor
.Ar elf
had an unknown ELF class.
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar type
contained an illegal value.
.It Bq Er ELF_E_UNIMPL
Support for ELF type
.Ar type
has not been implemented.
.It Bq Er ELF_E_VERSION
Argument
.Ar version
is not a supported version.
.El
.Sh SEE ALSO
.Xr elf 3 ,
.Xr gelf 3