COPY_FROM_USER

Section: (9)
Updated: 07 August 2003
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NAME

copy_from_user - Copy a block of data from user space.  

SYNOPSIS

unsigned long copy_from_user (void * to, const void __user * from, unsigned long n);  

ARGUMENTS

to
Destination address, in kernel space.
from
Source address, in user space.
n
Number of bytes to copy.
 

CONTEXT

User context only. This function may sleep.  

DESCRIPTION

Copy data from user space to kernel space.

Returns number of bytes that could not be copied. On success, this will be zero.

If some data could not be copied, this function will pad the copied data to the requested size using zero bytes.  

ABOUT THIS DOCUMENT

This documentation is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

For more details see the file COPYING in the source distribution of Linux.

If you have comments on the formatting of this manpage, then please contact Michael Still (mikal@stillhq.com).

This documentation was generated with kernel version 2.6.0.


 

Index

NAME
SYNOPSIS
ARGUMENTS
CONTEXT
DESCRIPTION
ABOUT THIS DOCUMENT

This document was created by man2html, using the manual pages.
Time: 04:27:41 GMT, August 07, 2003