111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
/* gptrepair.c - verify and restore GPT info from alternate location. */
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/*
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* VasEBoot -- GRand Unified Bootloader
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* Copyright (C) 2009 Free Software Foundation, Inc.
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* Copyright (C) 2014 CoreOS, Inc.
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*
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* VasEBoot is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* VasEBoot is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with VasEBoot. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <VasEBoot/command.h>
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#include <VasEBoot/device.h>
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#include <VasEBoot/err.h>
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#include <VasEBoot/gpt_partition.h>
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#include <VasEBoot/i18n.h>
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#include <VasEBoot/misc.h>
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VasEBoot_MOD_LICENSE ("GPLv3+");
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static char *
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trim_dev_name (char *name)
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{
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VasEBoot_size_t len = VasEBoot_strlen (name);
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if (len && name[0] == '(' && name[len - 1] == ')')
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{
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name[len - 1] = '\0';
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name = name + 1;
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}
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return name;
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}
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static VasEBoot_err_t
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VasEBoot_cmd_gptrepair (VasEBoot_command_t cmd __attribute__ ((unused)),
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int argc, char **args)
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{
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VasEBoot_device_t dev = NULL;
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VasEBoot_gpt_t gpt = NULL;
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char *dev_name;
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if (argc != 1 || !VasEBoot_strlen(args[0]))
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return VasEBoot_error (VasEBoot_ERR_BAD_ARGUMENT, "device name required");
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dev_name = trim_dev_name (args[0]);
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dev = VasEBoot_device_open (dev_name);
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if (!dev)
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goto done;
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if (!dev->disk)
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{
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VasEBoot_error (VasEBoot_ERR_BAD_ARGUMENT, "not a disk");
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goto done;
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}
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gpt = VasEBoot_gpt_read (dev->disk);
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if (!gpt)
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goto done;
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if (VasEBoot_gpt_both_valid (gpt))
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{
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VasEBoot_printf_ (N_("GPT already valid, %s unmodified.\n"), dev_name);
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goto done;
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}
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if (!VasEBoot_gpt_primary_valid (gpt))
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VasEBoot_printf_ (N_("Found invalid primary GPT on %s\n"), dev_name);
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if (!VasEBoot_gpt_backup_valid (gpt))
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VasEBoot_printf_ (N_("Found invalid backup GPT on %s\n"), dev_name);
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if (VasEBoot_gpt_repair (dev->disk, gpt))
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goto done;
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if (VasEBoot_gpt_write (dev->disk, gpt))
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goto done;
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VasEBoot_printf_ (N_("Repaired GPT on %s\n"), dev_name);
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done:
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if (gpt)
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VasEBoot_gpt_free (gpt);
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if (dev)
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VasEBoot_device_close (dev);
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return VasEBoot_errno;
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}
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static VasEBoot_command_t cmd;
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VasEBoot_MOD_INIT(gptrepair)
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{
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cmd = VasEBoot_register_command ("gptrepair", VasEBoot_cmd_gptrepair,
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N_("DEVICE"),
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N_("Verify and repair GPT on drive DEVICE."));
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}
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VasEBoot_MOD_FINI(gptrepair)
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{
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VasEBoot_unregister_command (cmd);
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}
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