BUF_LOCK (9)

Leading comments

Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. 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(s), this list of conditions and the following disclaimer as
   the first lines of this file unmodified other than the possible
   addition of one or more copyright notices.
2. Redistributions in binary for...

(The comments found at the beginning of the groff file "man9/BUF_LOCK.9freebsd".)

NAME

BUF_LOCK - locks a buffer

SYNOPSIS

In sys/param.h In sys/systm.h In sys/uio.h In sys/bio.h In sys/buf.h Ft int Fn BUF_LOCK struct buf *bp int locktype

DESCRIPTION

The Fn BUF_LOCK function locks the given buffer. If the lock is already held this call will block until it can acquire the lock unless LK_NOWAIT is set.

Its arguments are:

Fa bp

The buffer to lock.

Fa locktype

Flags controlling the type of lock. See lockmgr(9) for details.

RETURN VALUES

A value of 0 is returned upon success. See lockmgr(9) for information on non-zero return values.

SEE ALSO

buf(9), BUF_TIMELOCK9, BUF_UNLOCK9, lockmgr(9)

AUTHORS

This manual page was written by An Chad David Aq davidc@acns.ab.ca .