diff options
Diffstat (limited to 'lib/libc/gen/lockf.c')
-rw-r--r-- | lib/libc/gen/lockf.c | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/lib/libc/gen/lockf.c b/lib/libc/gen/lockf.c deleted file mode 100644 index 2c567ba..0000000 --- a/lib/libc/gen/lockf.c +++ /dev/null @@ -1,79 +0,0 @@ -/* $NetBSD: lockf.c,v 1.3 2008/04/28 20:22:59 martin Exp $ */ -/*- - * Copyright (c) 1997 The NetBSD Foundation, Inc. - * All rights reserved. - * - * This code is derived from software contributed to The NetBSD Foundation - * by Klaus Klein. - * - * 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, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS - * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED - * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS - * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include "namespace.h" -#include <errno.h> -#include <fcntl.h> -#include <unistd.h> -#include "un-namespace.h" - -int -lockf(int filedes, int function, off_t size) -{ - struct flock fl; - int cmd; - - fl.l_start = 0; - fl.l_len = size; - fl.l_whence = SEEK_CUR; - - switch (function) { - case F_ULOCK: - cmd = F_SETLK; - fl.l_type = F_UNLCK; - break; - case F_LOCK: - cmd = F_SETLKW; - fl.l_type = F_WRLCK; - break; - case F_TLOCK: - cmd = F_SETLK; - fl.l_type = F_WRLCK; - break; - case F_TEST: - fl.l_type = F_WRLCK; - if (_fcntl(filedes, F_GETLK, &fl) == -1) - return (-1); - if (fl.l_type == F_UNLCK || (fl.l_sysid == 0 && fl.l_pid == getpid())) - return (0); - errno = EAGAIN; - return (-1); - /* NOTREACHED */ - default: - errno = EINVAL; - return (-1); - /* NOTREACHED */ - } - - return (_fcntl(filedes, cmd, &fl)); -} |