/* $OpenBSD: opendisk.c,v 1.5 2008/06/26 05:42:05 ray Exp $ */ /* $NetBSD: opendisk.c,v 1.4 1997/09/30 17:13:50 phil Exp $ */ /*- * Copyright (c) 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Luke Mewburn. * * 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> #include <sys/param.h> #include <errno.h> #include <fcntl.h> #include <paths.h> #include <stdio.h> #include <string.h> #include "util.h" int opendisk(const char *path, int flags, char *buf, size_t buflen, int iscooked) { int f, rawpart; snprintf(buf, buflen, "%s", path); if ((flags & O_CREAT) != 0) { errno = EINVAL; return (-1); } rawpart = getrawpartition(); if (rawpart < 0) return (-1); /* sysctl(3) in getrawpartition sets errno */ f = open(buf, flags); if (f != -1 || errno != ENOENT) return (f); snprintf(buf, buflen, "%s%c", path, 'a' + rawpart); f = open(buf, flags); if (f != -1 || errno != ENOENT) return (f); if (strchr(path, '/') != NULL) return (-1); snprintf(buf, buflen, "%s%s%s", _PATH_DEV, iscooked ? "" : "r", path); f = open(buf, flags); if (f != -1 || errno != ENOENT) return (f); snprintf(buf, buflen, "%s%s%s%c", _PATH_DEV, iscooked ? "" : "r", path, 'a' + rawpart); f = open(buf, flags); return (f); }