1 /*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <stand.h> 31 #include <string.h> 32 #include "bootstrap.h" 33 #include "disk.h" 34 #include "libi386.h" 35 36 /* 37 * Point (dev) at an allocated device specifier for the device matching the 38 * path in (devspec). If it contains an explicit device specification, 39 * use that. If not, use the default device. 40 */ 41 int 42 i386_getdev(void **vdev, const char *devspec, const char **path) 43 { 44 struct devdesc **dev = (struct devdesc **)vdev; 45 int rv; 46 47 /* 48 * If it looks like this is just a path and no 49 * device, go with the current device. 50 */ 51 if ((devspec == NULL) || 52 (devspec[0] == '/') || 53 (strchr(devspec, ':') == NULL)) { 54 55 if (((rv = devparse(dev, getenv("currdev"), NULL)) == 0) && 56 (path != NULL)) 57 *path = devspec; 58 return(rv); 59 } 60 61 /* 62 * Try to parse the device name off the beginning of the devspec 63 */ 64 return(devparse(dev, devspec, path)); 65 } 66