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.\" Copyright (c) 2011 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: elftc_copyfile.3 2315 2011-12-11 09:28:55Z jkoshy $
.\"
.Dd December 11, 2011
.Os
.Dt ELFTC_COPYFILE 3
.Sh NAME
.Nm elftc_copyfile
.Nd convenience function to copy data
.Sh LIBRARY
.Lb libelftc
.Sh SYNOPSIS
.In libelftc.h
.Ft in
.Fn elftc_copyfile "int ifd" "int ofd"
.Sh DESCRIPTION
The function
.Fn elftc_copyfile
copies the contents of the file referenced by argument
.Ar ifd
to the file referenced by argument
.Ar ofd .
.Pp
The argument
.Ar ifd
should contain a file descriptor opened for reading, with its file
offset at the beginning of the file.
.Pp
The argument
.Ar ofd
should contain a file descriptor opened for writing.
.Sh RETURN VALUE
.Rv -std
.Sh ERRORS
The function
.Fn elftc_copyfile
may fail with any of the errors returned by
.Xr fstat 2 ,
.Xr malloc 3 ,
.Xr mmap 2 ,
.Xr munmap 2 ,
.Xr read 2
or
.Xr write 2 .
.Sh SEE ALSO
.Xr fstat 2 ,
.Xr malloc 3 ,
.Xr mmap 2 ,
.Xr munmap 2 ,
.Xr read 2 ,
.Xr write 2