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.TH "LOCK_MAY_READ" "9" "17 July 2003" "" ""

.SH NAME
lock_may_read \- checks that the region is free of locks
.SH SYNOPSIS
.sp
\fB
.sp
int lock_may_read  (struct inode * \fIinode\fB, loff_t \fIstart\fB, unsigned long \fIlen\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIinode\fB\fR
the inode that is being read
.TP
\fB\fIstart\fB\fR
the first byte to read
.TP
\fB\fIlen\fB\fR
the number of bytes to read
.SH "DESCRIPTION"
.PP
Emulates Windows locking requirements.  Whole-file
mandatory locks (share modes) can prohibit a read and
byte-range POSIX locks can prohibit a read if they overlap.
.PP
N.B. this function is only ever called
from knfsd and ownership of locks is never checked.
.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 2.5.71.