2 * Copyright (c) 2015 Eric McCorkle
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
31 #include <sys/cdefs.h>
32 #include <sys/param.h>
33 #include <sys/queue.h>
36 #include "boot_module.h"
41 static dev_info_t *devices;
44 vdev_read(vdev_t *vdev, void *priv, off_t off, void *buf, size_t bytes)
50 devinfo = (dev_info_t *)priv;
51 lba = off / devinfo->dev->Media->BlockSize;
53 status = devinfo->dev->ReadBlocks(devinfo->dev,
54 devinfo->dev->Media->MediaId, lba, bytes, buf);
55 if (status != EFI_SUCCESS) {
56 DPRINTF("vdev_read: failed dev: %p, id: %u, lba: %zu, size: %zu,"
57 " status: %lu\n", devinfo->dev,
58 devinfo->dev->Media->MediaId, lba, bytes,
59 EFI_ERROR_CODE(status));
67 probe(dev_info_t *dev)
73 /* ZFS consumes the dev on success so we need a copy. */
74 if ((status = bs->AllocatePool(EfiLoaderData, sizeof(*dev),
75 (void**)&tdev)) != EFI_SUCCESS) {
76 DPRINTF("Failed to allocate tdev (%lu)\n",
77 EFI_ERROR_CODE(status));
80 memcpy(tdev, dev, sizeof(*dev));
82 if (vdev_probe(vdev_read, tdev, &spa) != 0) {
83 (void)bs->FreePool(tdev);
84 return (EFI_UNSUPPORTED);
88 add_device(&devices, dev);
94 try_load(dev_info_t *devinfo, const char *loader_path, void **bufp, size_t *bufsize)
97 struct zfsmount zfsmount;
104 spa = devinfo->devdata;
105 if (zfs_spa_init(spa) != 0) {
106 /* Init failed, don't report this loudly. */
107 return (EFI_NOT_FOUND);
110 if (zfs_mount(spa, 0, &zfsmount) != 0) {
111 /* Mount failed, don't report this loudly. */
112 return (EFI_NOT_FOUND);
115 if ((err = zfs_lookup(&zfsmount, loader_path, &dn)) != 0) {
116 printf("Failed to lookup %s on pool %s (%d)\n", loader_path,
118 return (EFI_INVALID_PARAMETER);
121 if ((err = zfs_dnode_stat(spa, &dn, &st)) != 0) {
122 printf("Failed to lookup %s on pool %s (%d)\n", loader_path,
124 return (EFI_INVALID_PARAMETER);
127 if ((status = bs->AllocatePool(EfiLoaderData, (UINTN)st.st_size, &buf))
129 printf("Failed to allocate load buffer for pool %s (%lu)\n",
130 spa->spa_name, EFI_ERROR_CODE(status));
131 return (EFI_INVALID_PARAMETER);
134 if ((err = dnode_read(spa, &dn, 0, buf, st.st_size)) != 0) {
135 printf("Failed to read node from %s (%d)\n", spa->spa_name,
137 (void)bs->FreePool(buf);
138 return (EFI_INVALID_PARAMETER);
141 *bufsize = st.st_size;
144 return (EFI_SUCCESS);
148 load(const char *loader_path, dev_info_t **devinfop, void **bufp,
154 for (devinfo = devices; devinfo != NULL; devinfo = devinfo->next) {
155 status = try_load(devinfo, loader_path, bufp, bufsize);
156 if (status == EFI_SUCCESS) {
158 return (EFI_SUCCESS);
159 } else if (status != EFI_NOT_FOUND) {
164 return (EFI_NOT_FOUND);
172 spa = STAILQ_FIRST(&zfs_pools);
174 printf("%s found no pools\n", zfs_module.name);
178 printf("%s found the following pools:", zfs_module.name);
179 STAILQ_FOREACH(spa, &zfs_pools, spa_link)
180 printf(" %s", spa->spa_name);
192 const boot_module_t zfs_module =