grub/grub-core/disk/raid5_recover.c

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2008-08-23 Bean <bean123ch@gmail.com> * conf/common.rmk (grub_probe_SOURCES): Add disk/mdraid_linux.c. (grub_fstest_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c and lib/crc.c. (pkglib_MODULES): Add raid5rec.mod, raid6rec.mod, mdraid.mod and dm_nv.mod. (raid5rec_mod_SOURCES): New macro. (raid5rec_mod_CFLAGS): Likewise. (raid5rec_mod_LDFLAGS): Likewise. (raid6rec_mod_SOURCES): Likewise. (raid6rec_mod_CFLAGS): Likewise. (raid6rec_mod_LDFLAGS): Likewise. (mdraid_mod_SOURCES): Likewise. (mdraid_mod_CFLAGS): Likewise. (mdraid_mod_LDFLAGS): Likewise. (dm_nv_mod_SOURCES): Likewise. (dm_nv_mod_CFLAGS): Likewise. (dm_nv_mod_LDFLAGS): Likewise. * conf/i386-pc.rmk (grub_setup_SOURCES): Add disk/mdraid_linux.c. (grub_emu_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c. * conf/i386-coreboot.rmk (grub_emu_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c. * conf/i386-efi.rmk (grub_emu_SOURCES): Likewise. * conf/x86_64-efi.rmk (grub_emu_SOURCES): Likewise. * conf/i386-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Likewise. * disk/raid5_recover.c: New file. * disk/raid6_recover.c: Likewise. * disk/mdraid_linux.c: Likewise. * disk/dmraid_nvidia.c: Likewise. * disk/i386/pc/biosdisk.c: Set total_sectors of cdrom device to ULONG_MAX. * disk/raid.c (grub_raid_open): Use the size of the smallest disk to calculate the size of raid device. (grub_raid_read): Simplify raid0 code. Support raid4, raid6 and four different layout of raid5. (grub_raid_scan_device): Remove code specific to mdraid. (grub_raid_list): New variable. (free_array): New function. (grub_raid_register): Likewise. (grub_raid_unregister): Likewise. (grub_raid_rescan): Likewise. (GRUB_MOD_INIT): Don't iterate device here. (GRUB_MOD_FINI): Use free_array to release resource. * include/grub/raid.h: Remove macro and structure specific to mdraid. (grub_raid5_recover_func_t): New function variable type. (grub_raid6_recover_func_t): Likewise. (grub_raid5_recover_func): New variable. (grub_raid6_recover_func): Likewise. (grub_raid_register): New function. (grub_raid_unregister): Likewise. (grub_raid_rescan): Likewise. (grub_raid_block_xor): Likewise. * util/grub-fstest.c: Add #include <grub/raid.h> and <grub/lib/crc.h>. (CMD_CRC): New macro. (part): Removed. (read_file): Handle device as well as file. (cmd_crc): New function. (fstest): Handle multiple disks. (options): Remove part, raw and long, add root and diskcount. (usage): Add crc, remove -p, -r, -l, add -r and -c. (main): Find the first non option entry and ignore subsequence options, add handling for the new options, support multiple disks. * util/grub-probe.c (probe): Add mdraid to abstraction_name.
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/* raid5_recover.c - module to recover from faulty RAID4/5 arrays. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2006,2007,2008 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/dl.h>
#include <grub/disk.h>
#include <grub/mm.h>
#include <grub/err.h>
#include <grub/misc.h>
#include <grub/raid.h>
GRUB_MOD_LICENSE ("GPLv3+");
2008-08-23 Bean <bean123ch@gmail.com> * conf/common.rmk (grub_probe_SOURCES): Add disk/mdraid_linux.c. (grub_fstest_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c and lib/crc.c. (pkglib_MODULES): Add raid5rec.mod, raid6rec.mod, mdraid.mod and dm_nv.mod. (raid5rec_mod_SOURCES): New macro. (raid5rec_mod_CFLAGS): Likewise. (raid5rec_mod_LDFLAGS): Likewise. (raid6rec_mod_SOURCES): Likewise. (raid6rec_mod_CFLAGS): Likewise. (raid6rec_mod_LDFLAGS): Likewise. (mdraid_mod_SOURCES): Likewise. (mdraid_mod_CFLAGS): Likewise. (mdraid_mod_LDFLAGS): Likewise. (dm_nv_mod_SOURCES): Likewise. (dm_nv_mod_CFLAGS): Likewise. (dm_nv_mod_LDFLAGS): Likewise. * conf/i386-pc.rmk (grub_setup_SOURCES): Add disk/mdraid_linux.c. (grub_emu_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c. * conf/i386-coreboot.rmk (grub_emu_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c. * conf/i386-efi.rmk (grub_emu_SOURCES): Likewise. * conf/x86_64-efi.rmk (grub_emu_SOURCES): Likewise. * conf/i386-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Likewise. * disk/raid5_recover.c: New file. * disk/raid6_recover.c: Likewise. * disk/mdraid_linux.c: Likewise. * disk/dmraid_nvidia.c: Likewise. * disk/i386/pc/biosdisk.c: Set total_sectors of cdrom device to ULONG_MAX. * disk/raid.c (grub_raid_open): Use the size of the smallest disk to calculate the size of raid device. (grub_raid_read): Simplify raid0 code. Support raid4, raid6 and four different layout of raid5. (grub_raid_scan_device): Remove code specific to mdraid. (grub_raid_list): New variable. (free_array): New function. (grub_raid_register): Likewise. (grub_raid_unregister): Likewise. (grub_raid_rescan): Likewise. (GRUB_MOD_INIT): Don't iterate device here. (GRUB_MOD_FINI): Use free_array to release resource. * include/grub/raid.h: Remove macro and structure specific to mdraid. (grub_raid5_recover_func_t): New function variable type. (grub_raid6_recover_func_t): Likewise. (grub_raid5_recover_func): New variable. (grub_raid6_recover_func): Likewise. (grub_raid_register): New function. (grub_raid_unregister): Likewise. (grub_raid_rescan): Likewise. (grub_raid_block_xor): Likewise. * util/grub-fstest.c: Add #include <grub/raid.h> and <grub/lib/crc.h>. (CMD_CRC): New macro. (part): Removed. (read_file): Handle device as well as file. (cmd_crc): New function. (fstest): Handle multiple disks. (options): Remove part, raw and long, add root and diskcount. (usage): Add crc, remove -p, -r, -l, add -r and -c. (main): Find the first non option entry and ignore subsequence options, add handling for the new options, support multiple disks. * util/grub-probe.c (probe): Add mdraid to abstraction_name.
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static grub_err_t
grub_raid5_recover (struct grub_raid_array *array, int disknr,
char *buf, grub_disk_addr_t sector, int size)
{
char *buf2;
int i;
size <<= GRUB_DISK_SECTOR_BITS;
buf2 = grub_malloc (size);
2008-08-23 Bean <bean123ch@gmail.com> * conf/common.rmk (grub_probe_SOURCES): Add disk/mdraid_linux.c. (grub_fstest_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c and lib/crc.c. (pkglib_MODULES): Add raid5rec.mod, raid6rec.mod, mdraid.mod and dm_nv.mod. (raid5rec_mod_SOURCES): New macro. (raid5rec_mod_CFLAGS): Likewise. (raid5rec_mod_LDFLAGS): Likewise. (raid6rec_mod_SOURCES): Likewise. (raid6rec_mod_CFLAGS): Likewise. (raid6rec_mod_LDFLAGS): Likewise. (mdraid_mod_SOURCES): Likewise. (mdraid_mod_CFLAGS): Likewise. (mdraid_mod_LDFLAGS): Likewise. (dm_nv_mod_SOURCES): Likewise. (dm_nv_mod_CFLAGS): Likewise. (dm_nv_mod_LDFLAGS): Likewise. * conf/i386-pc.rmk (grub_setup_SOURCES): Add disk/mdraid_linux.c. (grub_emu_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c. * conf/i386-coreboot.rmk (grub_emu_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c. * conf/i386-efi.rmk (grub_emu_SOURCES): Likewise. * conf/x86_64-efi.rmk (grub_emu_SOURCES): Likewise. * conf/i386-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Likewise. * disk/raid5_recover.c: New file. * disk/raid6_recover.c: Likewise. * disk/mdraid_linux.c: Likewise. * disk/dmraid_nvidia.c: Likewise. * disk/i386/pc/biosdisk.c: Set total_sectors of cdrom device to ULONG_MAX. * disk/raid.c (grub_raid_open): Use the size of the smallest disk to calculate the size of raid device. (grub_raid_read): Simplify raid0 code. Support raid4, raid6 and four different layout of raid5. (grub_raid_scan_device): Remove code specific to mdraid. (grub_raid_list): New variable. (free_array): New function. (grub_raid_register): Likewise. (grub_raid_unregister): Likewise. (grub_raid_rescan): Likewise. (GRUB_MOD_INIT): Don't iterate device here. (GRUB_MOD_FINI): Use free_array to release resource. * include/grub/raid.h: Remove macro and structure specific to mdraid. (grub_raid5_recover_func_t): New function variable type. (grub_raid6_recover_func_t): Likewise. (grub_raid5_recover_func): New variable. (grub_raid6_recover_func): Likewise. (grub_raid_register): New function. (grub_raid_unregister): Likewise. (grub_raid_rescan): Likewise. (grub_raid_block_xor): Likewise. * util/grub-fstest.c: Add #include <grub/raid.h> and <grub/lib/crc.h>. (CMD_CRC): New macro. (part): Removed. (read_file): Handle device as well as file. (cmd_crc): New function. (fstest): Handle multiple disks. (options): Remove part, raw and long, add root and diskcount. (usage): Add crc, remove -p, -r, -l, add -r and -c. (main): Find the first non option entry and ignore subsequence options, add handling for the new options, support multiple disks. * util/grub-probe.c (probe): Add mdraid to abstraction_name.
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if (!buf2)
return grub_errno;
grub_memset (buf, 0, size);
2008-08-23 Bean <bean123ch@gmail.com> * conf/common.rmk (grub_probe_SOURCES): Add disk/mdraid_linux.c. (grub_fstest_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c and lib/crc.c. (pkglib_MODULES): Add raid5rec.mod, raid6rec.mod, mdraid.mod and dm_nv.mod. (raid5rec_mod_SOURCES): New macro. (raid5rec_mod_CFLAGS): Likewise. (raid5rec_mod_LDFLAGS): Likewise. (raid6rec_mod_SOURCES): Likewise. (raid6rec_mod_CFLAGS): Likewise. (raid6rec_mod_LDFLAGS): Likewise. (mdraid_mod_SOURCES): Likewise. (mdraid_mod_CFLAGS): Likewise. (mdraid_mod_LDFLAGS): Likewise. (dm_nv_mod_SOURCES): Likewise. (dm_nv_mod_CFLAGS): Likewise. (dm_nv_mod_LDFLAGS): Likewise. * conf/i386-pc.rmk (grub_setup_SOURCES): Add disk/mdraid_linux.c. (grub_emu_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c. * conf/i386-coreboot.rmk (grub_emu_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c. * conf/i386-efi.rmk (grub_emu_SOURCES): Likewise. * conf/x86_64-efi.rmk (grub_emu_SOURCES): Likewise. * conf/i386-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Likewise. * disk/raid5_recover.c: New file. * disk/raid6_recover.c: Likewise. * disk/mdraid_linux.c: Likewise. * disk/dmraid_nvidia.c: Likewise. * disk/i386/pc/biosdisk.c: Set total_sectors of cdrom device to ULONG_MAX. * disk/raid.c (grub_raid_open): Use the size of the smallest disk to calculate the size of raid device. (grub_raid_read): Simplify raid0 code. Support raid4, raid6 and four different layout of raid5. (grub_raid_scan_device): Remove code specific to mdraid. (grub_raid_list): New variable. (free_array): New function. (grub_raid_register): Likewise. (grub_raid_unregister): Likewise. (grub_raid_rescan): Likewise. (GRUB_MOD_INIT): Don't iterate device here. (GRUB_MOD_FINI): Use free_array to release resource. * include/grub/raid.h: Remove macro and structure specific to mdraid. (grub_raid5_recover_func_t): New function variable type. (grub_raid6_recover_func_t): Likewise. (grub_raid5_recover_func): New variable. (grub_raid6_recover_func): Likewise. (grub_raid_register): New function. (grub_raid_unregister): Likewise. (grub_raid_rescan): Likewise. (grub_raid_block_xor): Likewise. * util/grub-fstest.c: Add #include <grub/raid.h> and <grub/lib/crc.h>. (CMD_CRC): New macro. (part): Removed. (read_file): Handle device as well as file. (cmd_crc): New function. (fstest): Handle multiple disks. (options): Remove part, raw and long, add root and diskcount. (usage): Add crc, remove -p, -r, -l, add -r and -c. (main): Find the first non option entry and ignore subsequence options, add handling for the new options, support multiple disks. * util/grub-probe.c (probe): Add mdraid to abstraction_name.
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for (i = 0; i < (int) array->total_devs; i++)
{
grub_err_t err;
if (i == disknr)
continue;
err = grub_disk_read (array->members[i].device,
array->members[i].start_sector + sector,
0, size, buf2);
2008-08-23 Bean <bean123ch@gmail.com> * conf/common.rmk (grub_probe_SOURCES): Add disk/mdraid_linux.c. (grub_fstest_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c and lib/crc.c. (pkglib_MODULES): Add raid5rec.mod, raid6rec.mod, mdraid.mod and dm_nv.mod. (raid5rec_mod_SOURCES): New macro. (raid5rec_mod_CFLAGS): Likewise. (raid5rec_mod_LDFLAGS): Likewise. (raid6rec_mod_SOURCES): Likewise. (raid6rec_mod_CFLAGS): Likewise. (raid6rec_mod_LDFLAGS): Likewise. (mdraid_mod_SOURCES): Likewise. (mdraid_mod_CFLAGS): Likewise. (mdraid_mod_LDFLAGS): Likewise. (dm_nv_mod_SOURCES): Likewise. (dm_nv_mod_CFLAGS): Likewise. (dm_nv_mod_LDFLAGS): Likewise. * conf/i386-pc.rmk (grub_setup_SOURCES): Add disk/mdraid_linux.c. (grub_emu_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c. * conf/i386-coreboot.rmk (grub_emu_SOURCES): Add disk/raid5_recover.c, disk/raid6_recover.c, disk/mdraid_linux.c and disk/dmraid_nvidia.c. * conf/i386-efi.rmk (grub_emu_SOURCES): Likewise. * conf/x86_64-efi.rmk (grub_emu_SOURCES): Likewise. * conf/i386-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Likewise. * disk/raid5_recover.c: New file. * disk/raid6_recover.c: Likewise. * disk/mdraid_linux.c: Likewise. * disk/dmraid_nvidia.c: Likewise. * disk/i386/pc/biosdisk.c: Set total_sectors of cdrom device to ULONG_MAX. * disk/raid.c (grub_raid_open): Use the size of the smallest disk to calculate the size of raid device. (grub_raid_read): Simplify raid0 code. Support raid4, raid6 and four different layout of raid5. (grub_raid_scan_device): Remove code specific to mdraid. (grub_raid_list): New variable. (free_array): New function. (grub_raid_register): Likewise. (grub_raid_unregister): Likewise. (grub_raid_rescan): Likewise. (GRUB_MOD_INIT): Don't iterate device here. (GRUB_MOD_FINI): Use free_array to release resource. * include/grub/raid.h: Remove macro and structure specific to mdraid. (grub_raid5_recover_func_t): New function variable type. (grub_raid6_recover_func_t): Likewise. (grub_raid5_recover_func): New variable. (grub_raid6_recover_func): Likewise. (grub_raid_register): New function. (grub_raid_unregister): Likewise. (grub_raid_rescan): Likewise. (grub_raid_block_xor): Likewise. * util/grub-fstest.c: Add #include <grub/raid.h> and <grub/lib/crc.h>. (CMD_CRC): New macro. (part): Removed. (read_file): Handle device as well as file. (cmd_crc): New function. (fstest): Handle multiple disks. (options): Remove part, raw and long, add root and diskcount. (usage): Add crc, remove -p, -r, -l, add -r and -c. (main): Find the first non option entry and ignore subsequence options, add handling for the new options, support multiple disks. * util/grub-probe.c (probe): Add mdraid to abstraction_name.
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if (err)
{
grub_free (buf2);
return err;
}
grub_raid_block_xor (buf, buf2, size);
}
grub_free (buf2);
return GRUB_ERR_NONE;
}
GRUB_MOD_INIT(raid5rec)
{
grub_raid5_recover_func = grub_raid5_recover;
}
GRUB_MOD_FINI(raid5rec)
{
grub_raid5_recover_func = 0;
}