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- .\" $OpenBSD: dolock.1,v 1.5 2015/11/22 23:34:34 tim Exp $
- .\"
- .\" Copyright (c) 2010 Marc Espie <espie@openbsd.org>
- .\"
- .\" Permission to use, copy, modify, and distribute this software for any
- .\" purpose with or without fee is hereby granted, provided that the above
- .\" copyright notice and this permission notice appear in all copies.
- .\"
- .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- .\"
- .Dd $Mdocdate: November 22 2015 $
- .Dt DOLOCK 1
- .Os
- .Sh NAME
- .Nm dolock
- .Nd lock port for concurrent builds
- .Sh SYNOPSIS
- .Nm dolock
- .Op Fl g Ar group
- .Op Fl m Ar mode
- .Ar lockname Op comment ...
- .Sh DESCRIPTION
- .Nm
- creates a lock named
- .Ar lockname
- using
- .Xr open 2 .
- If the lock is already held, it will display one single wait message on
- stderr, sleep and retry until satisfaction.
- .Pp
- If necessary, creates the lock directory, using
- .Fl m Ar mode
- as a mode argument or the default if that option is not specified,
- and
- .Fl g Ar group
- as the group owner if that option is specified.
- .Pp
- This implements a locking mechanism for ports building, see
- .Sq LOCK INFRASTRUCTURE
- in
- .Xr ports 7
- for details.
- See also
- .Xr dpb 1
- for a complementary lock infrastructure when using dpb.
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