/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 1990 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. * Copyright 2015 Joyent, Inc. */ #include <sys/file.h> #include <sys/fcntl.h> int flock(fd, operation) int fd, operation; { struct flock fl; int cmd = F_FLOCKW; fl.l_whence = 0; fl.l_start = 0; fl.l_len = 0; fl.l_type = 0; if (operation & LOCK_UN) fl.l_type |= F_UNLCK; if (operation & LOCK_SH) fl.l_type |= F_RDLCK; if (operation & LOCK_EX) fl.l_type |= F_WRLCK; if (operation & LOCK_NB) cmd = F_FLOCK; return (bc_fcntl(fd, cmd, &fl)); }