LXR uboot/include/zfs/zfs.h

   1/*
   2 *  GRUB  --  GRand Unified Bootloader
   3 *  Copyright (C) 1999,2000,2001,2002,2003,2004  Free Software Foundation, Inc.
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7/*
   8 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
   9 */
  10
  11#ifndef GRUB_ZFS_HEADER
  12#define GRUB_ZFS_HEADER 1
  13
  14
  15/*
  16 * On-disk version number.
  17 */
  18#define SPA_VERSION                     28ULL
  19
  20/*
  21 * The following are configuration names used in the nvlist describing a pool's
  22 * configuration.
  23 */
  24#define ZPOOL_CONFIG_VERSION            "version"
  25#define ZPOOL_CONFIG_POOL_NAME          "name"
  26#define ZPOOL_CONFIG_POOL_STATE         "state"
  27#define ZPOOL_CONFIG_POOL_TXG           "txg"
  28#define ZPOOL_CONFIG_POOL_GUID          "pool_guid"
  29#define ZPOOL_CONFIG_CREATE_TXG         "create_txg"
  30#define ZPOOL_CONFIG_TOP_GUID           "top_guid"
  31#define ZPOOL_CONFIG_VDEV_TREE          "vdev_tree"
  32#define ZPOOL_CONFIG_TYPE               "type"
  33#define ZPOOL_CONFIG_CHILDREN           "children"
  34#define ZPOOL_CONFIG_ID                 "id"
  35#define ZPOOL_CONFIG_GUID               "guid"
  36#define ZPOOL_CONFIG_PATH               "path"
  37#define ZPOOL_CONFIG_DEVID              "devid"
  38#define ZPOOL_CONFIG_METASLAB_ARRAY     "metaslab_array"
  39#define ZPOOL_CONFIG_METASLAB_SHIFT     "metaslab_shift"
  40#define ZPOOL_CONFIG_ASHIFT             "ashift"
  41#define ZPOOL_CONFIG_ASIZE              "asize"
  42#define ZPOOL_CONFIG_DTL                "DTL"
  43#define ZPOOL_CONFIG_STATS              "stats"
  44#define ZPOOL_CONFIG_WHOLE_DISK         "whole_disk"
  45#define ZPOOL_CONFIG_ERRCOUNT           "error_count"
  46#define ZPOOL_CONFIG_NOT_PRESENT        "not_present"
  47#define ZPOOL_CONFIG_SPARES             "spares"
  48#define ZPOOL_CONFIG_IS_SPARE           "is_spare"
  49#define ZPOOL_CONFIG_NPARITY            "nparity"
  50#define ZPOOL_CONFIG_PHYS_PATH          "phys_path"
  51#define ZPOOL_CONFIG_L2CACHE            "l2cache"
  52#define ZPOOL_CONFIG_HOLE_ARRAY         "hole_array"
  53#define ZPOOL_CONFIG_VDEV_CHILDREN      "vdev_children"
  54#define ZPOOL_CONFIG_IS_HOLE            "is_hole"
  55#define ZPOOL_CONFIG_DDT_HISTOGRAM      "ddt_histogram"
  56#define ZPOOL_CONFIG_DDT_OBJ_STATS      "ddt_object_stats"
  57#define ZPOOL_CONFIG_DDT_STATS          "ddt_stats"
  58/*
  59 * The persistent vdev state is stored as separate values rather than a single
  60 * 'vdev_state' entry.  This is because a device can be in multiple states, such
  61 * as offline and degraded.
  62 */
  63#define ZPOOL_CONFIG_OFFLINE            "offline"
  64#define ZPOOL_CONFIG_FAULTED            "faulted"
  65#define ZPOOL_CONFIG_DEGRADED           "degraded"
  66#define ZPOOL_CONFIG_REMOVED            "removed"
  67
  68#define VDEV_TYPE_ROOT                  "root"
  69#define VDEV_TYPE_MIRROR                "mirror"
  70#define VDEV_TYPE_REPLACING             "replacing"
  71#define VDEV_TYPE_RAIDZ                 "raidz"
  72#define VDEV_TYPE_DISK                  "disk"
  73#define VDEV_TYPE_FILE                  "file"
  74#define VDEV_TYPE_MISSING               "missing"
  75#define VDEV_TYPE_HOLE                  "hole"
  76#define VDEV_TYPE_SPARE                 "spare"
  77#define VDEV_TYPE_L2CACHE               "l2cache"
  78
  79/*
  80 * pool state.  The following states are written to disk as part of the normal
  81 * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE, L2CACHE.  The remaining
  82 * states are software abstractions used at various levels to communicate pool
  83 * state.
  84 */
  85typedef enum pool_state {
  86        POOL_STATE_ACTIVE = 0,          /* In active use                */
  87        POOL_STATE_EXPORTED,            /* Explicitly exported          */
  88        POOL_STATE_DESTROYED,           /* Explicitly destroyed         */
  89        POOL_STATE_SPARE,               /* Reserved for hot spare use   */
  90        POOL_STATE_L2CACHE,             /* Level 2 ARC device           */
  91        POOL_STATE_UNINITIALIZED,       /* Internal spa_t state         */
  92        POOL_STATE_UNAVAIL,             /* Internal libzfs state        */
  93        POOL_STATE_POTENTIALLY_ACTIVE   /* Internal libzfs state        */
  94} pool_state_t;
  95
  96struct zfs_data;
  97
  98int zfs_fetch_nvlist(device_t dev, char **nvlist);
  99int zfs_getmdnobj(device_t dev, const char *fsfilename,
 100                               uint64_t *mdnobj);
 101
 102char *zfs_nvlist_lookup_string(char *nvlist, char *name);
 103char *zfs_nvlist_lookup_nvlist(char *nvlist, char *name);
 104int zfs_nvlist_lookup_uint64(char *nvlist, char *name,
 105                                   uint64_t *out);
 106char *zfs_nvlist_lookup_nvlist_array(char *nvlist, char *name,
 107                                           size_t index);
 108int zfs_nvlist_lookup_nvlist_array_get_nelm(char *nvlist, char *name);
 109
 110#endif  /* ! GRUB_ZFS_HEADER */
 111