.\" This manpage has been automatically generated by docbook2man 
.\" from a DocBook document.  This tool can be found at:
.\" <http://shell.ipoline.com/~elmert/comp/docbook2X/> 
.\" Please send any bug reports, improvements, comments, patches, 
.\" etc. to Steve Cheng <steve@ggi-project.org>.
.TH "__STRNCPY_FROM_USER" "9" "17 July 2003" "" ""

.SH NAME
__strncpy_from_user \- Copy a NUL terminated string from userspace, with less checking.
.SH SYNOPSIS
.sp
\fB
.sp
long __strncpy_from_user  (char * \fIdst\fB, const char __user * \fIsrc\fB, long \fIcount\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIdst\fB\fR
Destination address, in kernel space.  This buffer must be at
least \fIcount\fR bytes long.
.TP
\fB\fIsrc\fB\fR
Source address, in user space.
.TP
\fB\fIcount\fB\fR
Maximum number of bytes to copy, including the trailing NUL.
.SH "DESCRIPTION"
.PP
Copies a NUL-terminated string from userspace to kernel space.
Caller must check the specified block with \fBaccess_ok\fR before calling
this function.
.PP
On success, returns the length of the string (not including the trailing
NUL).
.PP
If access to userspace fails, returns -EFAULT (some data may have been
copied).
.PP
If \fIcount\fR is smaller than the length of the string, copies \fIcount\fR bytes
and returns \fIcount\fR.
.SH "ABOUT THIS DOCUMENT"
.PP
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.
.PP
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.
.PP
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
.PP
For more details see the file COPYING in the source
distribution of Linux.
.PP
If you have comments on the formatting of this manpage, then please contact
Michael Still (mikal@stillhq.com).
.PP
This documentation was generated with kernel version 2.5.72.