1 /*- 2 * Copyright (c) 2012 Andriy Gapon <avg@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 * $FreeBSD$ 27 */ 28 29 #include <zfsimpl.h> 30 31 #ifdef LOADER_GELI_SUPPORT 32 #include <crypto/intake.h> 33 #endif 34 35 #ifndef _BOOT_LIBZFS_H_ 36 #define _BOOT_LIBZFS_H_ 37 38 #define ZFS_MAXNAMELEN 256 39 40 /* 41 * ZFS fully-qualified device descriptor. 42 */ 43 struct zfs_devdesc { 44 struct devdesc dd; /* Must be first. */ 45 uint64_t pool_guid; 46 uint64_t root_guid; 47 }; 48 49 /* nvp implementation version */ 50 #define NV_VERSION 0 51 52 /* nvlist persistent unique name flags, stored in nvl_nvflags */ 53 #define NV_UNIQUE_NAME 0x1 54 #define NV_UNIQUE_NAME_TYPE 0x2 55 56 #define NV_ALIGN4(x) (((x) + 3) & ~3) 57 58 /* 59 * nvlist header. 60 * nvlist has 4 bytes header followed by version and flags, then nvpairs 61 * and the list is terminated by double zero. 62 */ 63 typedef struct { 64 char nvh_encoding; 65 char nvh_endian; 66 char nvh_reserved1; 67 char nvh_reserved2; 68 } nvs_header_t; 69 70 typedef struct { 71 nvs_header_t nv_header; 72 size_t nv_asize; 73 size_t nv_size; 74 uint8_t *nv_data; 75 uint8_t *nv_idx; 76 } nvlist_t; 77 78 /* 79 * nvpair header. 80 * nvpair has encoded and decoded size 81 * name string (size and data) 82 * data type and number of elements 83 * data 84 */ 85 typedef struct { 86 unsigned encoded_size; 87 unsigned decoded_size; 88 } nvp_header_t; 89 90 /* 91 * nvlist stream head. 92 */ 93 typedef struct { 94 unsigned nvl_version; 95 unsigned nvl_nvflag; 96 nvp_header_t nvl_pair; 97 } nvs_data_t; 98 99 typedef struct { 100 unsigned nv_size; 101 uint8_t nv_data[]; /* NV_ALIGN4(string) */ 102 } nv_string_t; 103 104 typedef struct { 105 unsigned nv_type; /* data_type_t */ 106 unsigned nv_nelem; /* number of elements */ 107 uint8_t nv_data[]; /* data stream */ 108 } nv_pair_data_t; 109 110 nvlist_t *nvlist_create(int); 111 void nvlist_destroy(nvlist_t *); 112 nvlist_t *nvlist_import(const uint8_t *, char, char); 113 int nvlist_remove(nvlist_t *, const char *, data_type_t); 114 void nvlist_print(nvlist_t *, unsigned int); 115 int nvlist_find(const nvlist_t *, const char *, data_type_t, 116 int *, void *, int *); 117 int nvlist_next(nvlist_t *); 118 119 int zfs_parsedev(struct zfs_devdesc *dev, const char *devspec, 120 const char **path); 121 char *zfs_fmtdev(void *vdev); 122 int zfs_nextboot(void *vdev, char *buf, size_t size); 123 int zfs_probe_dev(const char *devname, uint64_t *pool_guid); 124 int zfs_list(const char *name); 125 uint64_t ldi_get_size(void *); 126 void init_zfs_bootenv(const char *currdev); 127 int zfs_bootenv(const char *name); 128 int zfs_belist_add(const char *name, uint64_t __unused); 129 int zfs_set_env(void); 130 131 extern struct devsw zfs_dev; 132 extern struct fs_ops zfs_fsops; 133 134 #endif /*_BOOT_LIBZFS_H_*/ 135