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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
* Copyright 2008 Sun Microsystems, Inc.
* Copyright (C) 2009 Vladimir Serbinenko <phcoder@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/zfs/zfs.h>
#include <grub/device.h>
#include <grub/file.h>
#include <grub/command.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/dl.h>
#include <grub/env.h>
static inline void
print_tabs (int n)
{
int i;
for (i = 0; i < n; i++)
grub_printf (" ");
}
static grub_err_t
print_state (char *nvlist, int tab)
{
grub_uint64_t ival;
int isok = 1;
print_tabs (tab);
grub_printf ("State: ");
if (grub_zfs_nvlist_lookup_uint64 (nvlist, ZPOOL_CONFIG_REMOVED, &ival))
{
grub_printf ("removed ");
isok = 0;
}
if (grub_zfs_nvlist_lookup_uint64 (nvlist, ZPOOL_CONFIG_FAULTED, &ival))
{
grub_printf ("faulted ");
isok = 0;
}
if (grub_zfs_nvlist_lookup_uint64 (nvlist, ZPOOL_CONFIG_OFFLINE, &ival))
{
grub_printf ("offline ");
isok = 0;
}
if (grub_zfs_nvlist_lookup_uint64 (nvlist, ZPOOL_CONFIG_FAULTED, &ival))
grub_printf ("degraded ");
if (isok)
grub_printf ("online");
grub_printf ("\n");
return GRUB_ERR_NONE;
}
static grub_err_t
print_vdev_info (char *nvlist, int tab)
{
char *type = 0;
type = grub_zfs_nvlist_lookup_string (nvlist, ZPOOL_CONFIG_TYPE);
if (!type)
{
print_tabs (tab);
grub_printf ("Incorrect VDEV: no type available\n");
return grub_errno;
}
if (grub_strcmp (type, VDEV_TYPE_DISK) == 0)
{
char *bootpath = 0;
char *path = 0;
char *devid = 0;
print_tabs (tab);
grub_printf ("Leaf VDEV\n");
print_state (nvlist, tab);
bootpath =
grub_zfs_nvlist_lookup_string (nvlist, ZPOOL_CONFIG_PHYS_PATH);
print_tabs (tab);
if (!bootpath)
grub_printf ("Bootpath: unavailable\n");
else
grub_printf ("Bootpath: %s\n", bootpath);
path = grub_zfs_nvlist_lookup_string (nvlist, "path");
print_tabs (tab);
if (!path)
grub_printf ("Path: unavailable\n");
else
grub_printf ("Path: %s\n", path);
devid = grub_zfs_nvlist_lookup_string (nvlist, ZPOOL_CONFIG_DEVID);
print_tabs (tab);
if (!devid)
grub_printf ("Devid: unavailable\n");
else
grub_printf ("Devid: %s\n", devid);
grub_free (bootpath);
grub_free (devid);
grub_free (path);
return GRUB_ERR_NONE;
}
if (grub_strcmp (type, VDEV_TYPE_MIRROR) == 0)
{
int nelm, i;
nelm = grub_zfs_nvlist_lookup_nvlist_array_get_nelm
(nvlist, ZPOOL_CONFIG_CHILDREN);
print_tabs (tab);
if (nelm <= 0)
{
grub_printf ("Incorrect mirror VDEV\n");
return GRUB_ERR_NONE;
}
grub_printf ("Mirror VDEV with %d children\n", nelm);
print_state (nvlist, tab);
for (i = 0; i < nelm; i++)
{
char *child;
child = grub_zfs_nvlist_lookup_nvlist_array
(nvlist, ZPOOL_CONFIG_CHILDREN, i);
print_tabs (tab);
if (!child)
{
grub_printf ("Mirror VDEV element %d isn't correct\n", i);
continue;
}
grub_printf ("Mirror VDEV element %d:\n", i);
print_vdev_info (child, tab + 1);
grub_free (child);
}
}
print_tabs (tab);
grub_printf ("Unknown VDEV type: %s\n", type);
return GRUB_ERR_NONE;
}
static grub_err_t
get_bootpath (char *nvlist, char **bootpath, char **devid)
{
char *type = 0;
type = grub_zfs_nvlist_lookup_string (nvlist, ZPOOL_CONFIG_TYPE);
if (!type)
return grub_errno;
if (grub_strcmp (type, VDEV_TYPE_DISK) == 0)
{
*bootpath = grub_zfs_nvlist_lookup_string (nvlist,
ZPOOL_CONFIG_PHYS_PATH);
*devid = grub_zfs_nvlist_lookup_string (nvlist, ZPOOL_CONFIG_DEVID);
if (!*bootpath || !*devid)
{
grub_free (*bootpath);
grub_free (*devid);
*bootpath = 0;
*devid = 0;
}
return GRUB_ERR_NONE;
}
if (grub_strcmp (type, VDEV_TYPE_MIRROR) == 0)
{
int nelm, i;
nelm = grub_zfs_nvlist_lookup_nvlist_array_get_nelm
(nvlist, ZPOOL_CONFIG_CHILDREN);
for (i = 0; i < nelm; i++)
{
char *child;
child = grub_zfs_nvlist_lookup_nvlist_array (nvlist,
ZPOOL_CONFIG_CHILDREN,
i);
get_bootpath (child, bootpath, devid);
grub_free (child);
if (*bootpath && *devid)
return GRUB_ERR_NONE;
}
}
return GRUB_ERR_NONE;
}
static char *poolstates[] = {
[POOL_STATE_ACTIVE] = "active",
[POOL_STATE_EXPORTED] = "exported",
[POOL_STATE_DESTROYED] = "destroyed",
[POOL_STATE_SPARE] = "reserved for hot spare",
[POOL_STATE_L2CACHE] = "level 2 ARC device",
[POOL_STATE_UNINITIALIZED] = "uninitialized",
[POOL_STATE_UNAVAIL] = "unavailable",
[POOL_STATE_POTENTIALLY_ACTIVE] = "potentially active"
};
static grub_err_t
grub_cmd_zfsinfo (grub_command_t cmd __attribute__ ((unused)), int argc,
char **args)
{
grub_device_t dev;
char *devname;
grub_err_t err;
char *nvlist = 0;
char *nv = 0;
char *poolname;
grub_uint64_t guid;
grub_uint64_t pool_state;
int found;
if (argc < 1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "device name required");
if (args[0][0] == '(' && args[0][grub_strlen (args[0]) - 1] == ')')
{
devname = grub_strdup (args[0] + 1);
if (devname)
devname[grub_strlen (devname) - 1] = 0;
}
else
devname = grub_strdup (args[0]);
if (!devname)
return grub_errno;
dev = grub_device_open (devname);
grub_free (devname);
if (!dev)
return grub_errno;
err = grub_zfs_fetch_nvlist (dev, &nvlist);
grub_device_close (dev);
if (err)
return err;
poolname = grub_zfs_nvlist_lookup_string (nvlist, ZPOOL_CONFIG_POOL_NAME);
if (!poolname)
grub_printf ("Pool name: unavailable\n");
else
grub_printf ("Pool name: %s\n", poolname);
found =
grub_zfs_nvlist_lookup_uint64 (nvlist, ZPOOL_CONFIG_POOL_GUID, &guid);
if (!found)
grub_printf ("Pool GUID: unavailable\n");
else
grub_printf ("Pool GUID: %016llx\n", (long long unsigned) guid);
found = grub_zfs_nvlist_lookup_uint64 (nvlist, ZPOOL_CONFIG_POOL_STATE,
&pool_state);
if (!found)
grub_printf ("Unable to retrieve pool state\n");
else if (pool_state >= ARRAY_SIZE (poolstates))
grub_printf ("Unrecognized pool state\n");
else
grub_printf ("Pool state: %s\n", poolstates[pool_state]);
nv = grub_zfs_nvlist_lookup_nvlist (nvlist, ZPOOL_CONFIG_VDEV_TREE);
if (!nv)
grub_printf ("No vdev tree available\n");
else
print_vdev_info (nv, 1);
grub_free (nv);
grub_free (nvlist);
return GRUB_ERR_NONE;
}
static grub_err_t
grub_cmd_zfs_bootfs (grub_command_t cmd __attribute__ ((unused)), int argc,
char **args)
{
grub_device_t dev;
char *devname;
grub_err_t err;
char *nvlist = 0;
char *nv = 0;
char *bootpath = 0, *devid = 0;
char *fsname;
char *bootfs;
char *poolname;
grub_uint64_t mdnobj;
if (argc < 1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "filesystem name required");
devname = grub_file_get_device_name (args[0]);
if (grub_errno)
return grub_errno;
dev = grub_device_open (devname);
grub_free (devname);
if (!dev)
return grub_errno;
err = grub_zfs_fetch_nvlist (dev, &nvlist);
fsname = grub_strchr (args[0], ')');
if (fsname)
fsname++;
else
fsname = args[0];
if (!err)
err = grub_zfs_getmdnobj (dev, fsname, &mdnobj);
grub_device_close (dev);
if (err)
return err;
poolname = grub_zfs_nvlist_lookup_string (nvlist, ZPOOL_CONFIG_POOL_NAME);
if (!poolname)
{
if (!grub_errno)
grub_error (GRUB_ERR_BAD_FS, "No poolname found");
return grub_errno;
}
nv = grub_zfs_nvlist_lookup_nvlist (nvlist, ZPOOL_CONFIG_VDEV_TREE);
if (nv)
get_bootpath (nv, &bootpath, &devid);
grub_free (nv);
grub_free (nvlist);
if (bootpath && devid)
{
bootfs = grub_xasprintf ("zfs-bootfs=%s/%llu bootpath=%s diskdevid=%s",
poolname, (unsigned long long) mdnobj,
bootpath, devid);
if (!bootfs)
return grub_errno;
}
else
{
bootfs = grub_xasprintf ("zfs-bootfs=%s/%llu",
poolname, (unsigned long long) mdnobj);
if (!bootfs)
return grub_errno;
}
if (argc >= 2)
grub_env_set (args[1], bootfs);
else
grub_printf ("%s\n", bootfs);
grub_free (bootfs);
grub_free (poolname);
grub_free (bootpath);
grub_free (devid);
return GRUB_ERR_NONE;
}
static grub_command_t cmd_info, cmd_bootfs;
GRUB_MOD_INIT (zfsinfo)
{
cmd_info = grub_register_command ("zfsinfo", grub_cmd_zfsinfo,
"zfsinfo DEVICE",
"Print ZFS info about DEVICE.");
cmd_bootfs = grub_register_command ("zfs-bootfs", grub_cmd_zfs_bootfs,
"zfs-bootfs FILESYSTEM [VARIABLE]",
"Print ZFS-BOOTFSOBJ or set it to VARIABLE");
}
GRUB_MOD_FINI (zfsinfo)
{
grub_unregister_command (cmd_info);
grub_unregister_command (cmd_bootfs);
}
|
