1 /* 2 * Copyright (c) 2008-2010 Rui Paulo 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 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 30 #include <sys/param.h> 31 #include <sys/disk.h> 32 #include <stand.h> 33 34 #include <libzfs.h> 35 36 #include <efi.h> 37 #include <efilib.h> 38 39 #include "efizfs.h" 40 41 static zfsinfo_list_t zfsinfo; 42 43 uint64_t pool_guid; 44 45 zfsinfo_list_t * 46 efizfs_get_zfsinfo_list(void) 47 { 48 return (&zfsinfo); 49 } 50 51 EFI_HANDLE 52 efizfs_get_handle_by_guid(uint64_t guid) 53 { 54 zfsinfo_t *zi; 55 56 STAILQ_FOREACH(zi, &zfsinfo, zi_link) { 57 if (zi->zi_pool_guid == guid) { 58 return (zi->zi_handle); 59 } 60 } 61 return (NULL); 62 } 63 64 static void 65 insert_zfs(EFI_HANDLE handle, uint64_t guid) 66 { 67 zfsinfo_t *zi; 68 69 zi = malloc(sizeof(zfsinfo_t)); 70 zi->zi_handle = handle; 71 zi->zi_pool_guid = guid; 72 STAILQ_INSERT_TAIL(&zfsinfo, zi, zi_link); 73 } 74 75 void 76 efi_zfs_probe(void) 77 { 78 pdinfo_list_t *hdi; 79 pdinfo_t *hd, *pd = NULL; 80 char devname[SPECNAMELEN + 1]; 81 uint64_t guid; 82 83 hdi = efiblk_get_pdinfo_list(&efipart_hddev); 84 STAILQ_INIT(&zfsinfo); 85 86 /* 87 * Find the handle for the boot device. The boot1 did find the 88 * device with loader binary, now we need to search for the 89 * same device and if it is part of the zfs pool, we record the 90 * pool GUID for currdev setup. 91 */ 92 STAILQ_FOREACH(hd, hdi, pd_link) { 93 STAILQ_FOREACH(pd, &hd->pd_part, pd_link) { 94 95 snprintf(devname, sizeof(devname), "%s%dp%d:", 96 efipart_hddev.dv_name, hd->pd_unit, pd->pd_unit); 97 98 if (zfs_probe_dev(devname, &guid) == 0) { 99 insert_zfs(pd->pd_handle, guid); 100 101 if (efi_zfs_is_preferred(pd->pd_handle)) 102 pool_guid = guid; 103 } 104 105 } 106 } 107 } 108 109 uint64_t 110 ldi_get_size(void *priv) 111 { 112 int fd = (uintptr_t) priv; 113 uint64_t size; 114 115 ioctl(fd, DIOCGMEDIASIZE, &size); 116 return (size); 117 } 118