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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB 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.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/types.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/err.h>
#include <grub/dl.h>
#include <grub/device.h>
#include <grub/disk.h>
#include <grub/partition.h>
#include <grub/net.h>
#include <grub/fs.h>
#include <grub/file.h>
#include <grub/misc.h>
#include <grub/env.h>
#include <grub/extcmd.h>
#include <grub/i18n.h>
GRUB_MOD_LICENSE ("GPLv3+");
static const struct grub_arg_option options[] =
{
{"set", 's', 0,
N_("Set a variable to return value."), "VAR", ARG_TYPE_STRING},
{"driver", 'd', 0, N_("Determine driver."), 0, 0},
{"partmap", 'p', 0, N_("Determine partition map type."), 0, 0},
{"fs", 'f', 0, N_("Determine filesystem type."), 0, 0},
{"fs-uuid", 'u', 0, N_("Determine filesystem UUID."), 0, 0},
{"label", 'l', 0, N_("Determine filesystem label."), 0, 0},
{0, 0, 0, 0, 0, 0}
};
static grub_err_t
grub_cmd_probe (grub_extcmd_context_t ctxt, int argc, char **args)
{
struct grub_arg_list *state = ctxt->state;
grub_device_t dev;
grub_fs_t fs;
char *ptr;
grub_err_t err;
if (argc < 1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "device name required");
ptr = args[0] + grub_strlen (args[0]) - 1;
if (args[0][0] == '(' && *ptr == ')')
{
*ptr = 0;
dev = grub_device_open (args[0] + 1);
*ptr = ')';
}
else
dev = grub_device_open (args[0]);
if (! dev)
return grub_error (GRUB_ERR_BAD_DEVICE, "couldn't open device");
if (state[1].set)
{
const char *val = "none";
if (dev->net)
val = dev->net->dev->name;
if (dev->disk)
val = dev->disk->dev->name;
if (state[0].set)
grub_env_set (state[0].arg, val);
else
grub_printf ("%s", val);
return GRUB_ERR_NONE;
}
if (state[2].set)
{
const char *val = "none";
if (dev->disk && dev->disk->partition)
val = dev->disk->partition->partmap->name;
if (state[0].set)
grub_env_set (state[0].arg, val);
else
grub_printf ("%s", val);
return GRUB_ERR_NONE;
}
fs = grub_fs_probe (dev);
if (! fs)
return grub_error (GRUB_ERR_UNKNOWN_FS, "unrecognised fs");
if (state[3].set)
{
if (state[0].set)
grub_env_set (state[0].arg, fs->name);
else
grub_printf ("%s", fs->name);
return GRUB_ERR_NONE;
}
if (state[4].set)
{
char *uuid;
if (! fs->uuid)
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"uuid for this FS isn't supported yet");
err = fs->uuid (dev, &uuid);
if (err)
return err;
if (! uuid)
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"uuid for this FS isn't supported yet");
if (state[0].set)
grub_env_set (state[0].arg, uuid);
else
grub_printf ("%s", uuid);
grub_free (uuid);
return GRUB_ERR_NONE;
}
if (state[5].set)
{
char *label;
if (! fs->label)
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"label for this FS isn't supported yet");
err = fs->label (dev, &label);
if (err)
return err;
if (! label)
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"uuid for this FS isn't supported yet");
if (state[0].set)
grub_env_set (state[0].arg, label);
else
grub_printf ("%s", label);
grub_free (label);
return GRUB_ERR_NONE;
}
return grub_error (GRUB_ERR_BAD_ARGUMENT, "unrecognised target");
}
static grub_extcmd_t cmd;
GRUB_MOD_INIT (probe)
{
cmd = grub_register_extcmd ("probe", grub_cmd_probe, 0, N_("DEVICE"),
N_("Retrieve device info."), options);
}
GRUB_MOD_FINI (probe)
{
grub_unregister_extcmd (cmd);
}
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