1 /*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * Copyright (c) 2006 Marcel Moolenaar 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <stand.h> 32 #include <string.h> 33 #include <sys/disklabel.h> 34 #include <sys/param.h> 35 #include <bootstrap.h> 36 #include <disk.h> 37 38 #include <efi.h> 39 #include <efilib.h> 40 #include <efizfs.h> 41 42 /* 43 * Point (dev) at an allocated device specifier for the device matching the 44 * path in (devspec). If it contains an explicit device specification, 45 * use that. If not, use the default device. 46 */ 47 int 48 efi_getdev(void **vdev, const char *devspec, const char **path) 49 { 50 struct devdesc **dev = (struct devdesc **)vdev; 51 int rv; 52 53 /* 54 * If it looks like this is just a path and no device, then 55 * use the current device instead. 56 */ 57 if (devspec == NULL || *devspec == '/' || !strchr(devspec, ':')) { 58 rv = devparse(dev, getenv("currdev"), NULL); 59 if (rv == 0 && path != NULL) 60 *path = devspec; 61 return (rv); 62 } 63 64 return (devparse(dev, devspec, path)); 65 } 66 67 /* 68 * Set currdev to suit the value being supplied in (value) 69 */ 70 int 71 efi_setcurrdev(struct env_var *ev, int flags, const void *value) 72 { 73 struct devdesc *ncurr; 74 int rv; 75 76 rv = devparse(&ncurr, value, NULL); 77 if (rv != 0) 78 return (rv); 79 free(ncurr); 80 81 return (mount_currdev(ev, flags, value)); 82 } 83