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 33 #include <libzfs.h> 34 35 #include <efi.h> 36 #include <efilib.h> 37 38 #include "efizfs.h" 39 40 static zfsinfo_list_t zfsinfo; 41 42 uint64_t pool_guid; 43 44 zfsinfo_list_t * 45 efizfs_get_zfsinfo_list(void) 46 { 47 return (&zfsinfo); 48 } 49 50 EFI_HANDLE 51 efizfs_get_handle_by_guid(uint64_t guid) 52 { 53 zfsinfo_t *zi; 54 55 STAILQ_FOREACH(zi, &zfsinfo, zi_link) { 56 if (zi->zi_pool_guid == guid) { 57 return (zi->zi_handle); 58 } 59 } 60 return (NULL); 61 } 62 63 static void 64 insert_zfs(EFI_HANDLE handle, uint64_t guid) 65 { 66 zfsinfo_t *zi; 67 68 zi = malloc(sizeof(zfsinfo_t)); 69 zi->zi_handle = handle; 70 zi->zi_pool_guid = guid; 71 STAILQ_INSERT_TAIL(&zfsinfo, zi, zi_link); 72 } 73 74 void 75 efi_zfs_probe(void) 76 { 77 pdinfo_list_t *hdi; 78 pdinfo_t *hd, *pd = NULL; 79 char devname[SPECNAMELEN + 1]; 80 uint64_t guid; 81 82 hdi = efiblk_get_pdinfo_list(&efipart_hddev); 83 STAILQ_INIT(&zfsinfo); 84 85 /* 86 * Find the handle for the boot device. The boot1 did find the 87 * device with loader binary, now we need to search for the 88 * same device and if it is part of the zfs pool, we record the 89 * pool GUID for currdev setup. 90 */ 91 STAILQ_FOREACH(hd, hdi, pd_link) { 92 STAILQ_FOREACH(pd, &hd->pd_part, pd_link) { 93 94 snprintf(devname, sizeof(devname), "%s%dp%d:", 95 efipart_hddev.dv_name, hd->pd_unit, pd->pd_unit); 96 97 if (zfs_probe_dev(devname, &guid) == 0) { 98 insert_zfs(pd->pd_handle, guid); 99 100 if (efi_zfs_is_preferred(pd->pd_handle)) 101 pool_guid = guid; 102 } 103 104 } 105 } 106 } 107 108 uint64_t 109 ldi_get_size(void *priv) 110 { 111 int fd = (uintptr_t) priv; 112 uint64_t size; 113 114 ioctl(fd, DIOCGMEDIASIZE, &size); 115 return (size); 116 } 117