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 #include <stand.h> 29 #include <string.h> 30 31 #include "bootstrap.h" 32 #include "disk.h" 33 #include "libuserboot.h" 34 35 /* 36 * Point (dev) at an allocated device specifier for the device matching the 37 * path in (devspec). If it contains an explicit device specification, 38 * use that. If not, use the default device. 39 */ 40 int 41 userboot_getdev(void **vdev, const char *devspec, const char **path) 42 { 43 struct devdesc **dev = (struct devdesc **)vdev; 44 int rv; 45 46 /* 47 * If it looks like this is just a path and no 48 * device, go with the current device. 49 */ 50 if ((devspec == NULL) || 51 (devspec[0] == '/') || 52 (strchr(devspec, ':') == NULL)) { 53 54 rv = devparse(dev, getenv("currdev"), NULL); 55 if (rv == 0 && path != NULL) 56 *path = devspec; 57 return (rv); 58 } 59 60 /* 61 * Try to parse the device name off the beginning of the devspec 62 */ 63 return (devparse(dev, devspec, path)); 64 } 65