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.TH "SYS_FLOCK" "9" "09 April 2004" "" ""

.SH NAME
sys_flock \- flock system call.
.SH SYNOPSIS
.sp
\fB
.sp
asmlinkage long sys_flock  (unsigned int \fIfd\fB, unsigned int \fIcmd\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIfd\fB\fR
the file descriptor to lock.
.TP
\fB\fIcmd\fB\fR
the type of lock to apply.
.SH "DESCRIPTION"
.PP
Apply a FL_FLOCK style lock to an open file descriptor.
The \fIcmd\fR can be one of
.PP
LOCK_SH -- a shared lock.
.PP
LOCK_EX -- an exclusive lock.
.PP
LOCK_UN -- remove an existing lock.
.PP
LOCK_MAND -- a `mandatory' flock.  This exists to emulate Windows Share Modes.
.PP
LOCK_MAND can be combined with LOCK_READ or LOCK_WRITE to allow other
processes read and write access respectively.
.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 2.6.0.