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merge with mainline

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This commit is contained in:
BVK Chaitanya 2010-07-22 22:39:42 +05:30
commit a281e2e80a
18 changed files with 654 additions and 163 deletions
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6
disk/dmraid_nvidia.c
View file

@ -89,7 +89,8 @@ struct grub_nv_super
} __attribute__ ((packed));
static grub_err_t
grub_dmraid_nv_detect (grub_disk_t disk, struct grub_raid_array *array)
grub_dmraid_nv_detect (grub_disk_t disk, struct grub_raid_array *array,
grub_disk_addr_t *start_sector)
{
grub_disk_addr_t sector;
struct grub_nv_super sb;
@ -132,6 +133,7 @@ grub_dmraid_nv_detect (grub_disk_t disk, struct grub_raid_array *array)
"unsupported RAID level: %d", sb.array.raid_level);
}
array->name = NULL;
array->number = 0;
array->total_devs = sb.array.total_volumes;
array->chunk_size = sb.array.stripe_block_size;
@ -144,6 +146,8 @@ grub_dmraid_nv_detect (grub_disk_t disk, struct grub_raid_array *array)
grub_memcpy (array->uuid, (char *) &sb.array.signature,
sizeof (sb.array.signature));
*start_sector = 0;
return 0;
}

49
disk/loopback.c
View file

@ -28,7 +28,7 @@
struct grub_loopback
{
char *devname;
char *filename;
grub_file_t file;
int has_partitions;
struct grub_loopback *next;
};
@ -63,7 +63,7 @@ delete_loopback (const char *name)
*prev = dev->next;
grub_free (dev->devname);
grub_free (dev->filename);
grub_file_close (dev->file);
grub_free (dev);
return 0;
@ -76,6 +76,7 @@ grub_cmd_loopback (grub_extcmd_context_t ctxt, int argc, char **args)
struct grub_arg_list *state = ctxt->state;
grub_file_t file;
struct grub_loopback *newdev;
grub_err_t ret;
if (argc < 1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "device name required");
@ -91,9 +92,6 @@ grub_cmd_loopback (grub_extcmd_context_t ctxt, int argc, char **args)
if (! file)
return grub_errno;
/* Close the file, the only reason for opening it is validation. */
grub_file_close (file);
/* First try to replace the old device. */
for (newdev = loopback_list; newdev; newdev = newdev->next)
if (grub_strcmp (newdev->devname, args[0]) == 0)
@ -103,10 +101,10 @@ grub_cmd_loopback (grub_extcmd_context_t ctxt, int argc, char **args)
{
char *newname = grub_strdup (args[1]);
if (! newname)
return grub_errno;
goto fail;
grub_free (newdev->filename);
newdev->filename = newname;
grub_file_close (newdev->file);
newdev->file = file;
/* Set has_partitions when `--partitions' was used. */
newdev->has_partitions = state[1].set;
@ -117,22 +115,16 @@ grub_cmd_loopback (grub_extcmd_context_t ctxt, int argc, char **args)
/* Unable to replace it, make a new entry. */
newdev = grub_malloc (sizeof (struct grub_loopback));
if (! newdev)
return grub_errno;
goto fail;
newdev->devname = grub_strdup (args[0]);
if (! newdev->devname)
{
grub_free (newdev);
return grub_errno;
goto fail;
}
newdev->filename = grub_strdup (args[1]);
if (! newdev->filename)
{
grub_free (newdev->devname);
grub_free (newdev);
return grub_errno;
}
newdev->file = file;
/* Set has_partitions when `--partitions' was used. */
newdev->has_partitions = state[1].set;
@ -142,6 +134,11 @@ grub_cmd_loopback (grub_extcmd_context_t ctxt, int argc, char **args)
loopback_list = newdev;
return 0;
fail:
ret = grub_errno;
grub_file_close (file);
return ret;
}
@ -160,7 +157,6 @@ grub_loopback_iterate (int (*hook) (const char *name))
static grub_err_t
grub_loopback_open (const char *name, grub_disk_t disk)
{
grub_file_t file;
struct grub_loopback *dev;
for (dev = loopback_list; dev; dev = dev->next)
@ -170,29 +166,17 @@ grub_loopback_open (const char *name, grub_disk_t disk)
if (! dev)
return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "can't open device");
file = grub_file_open (dev->filename);
if (! file)
return grub_errno;
/* Use the filesize for the disk size, round up to a complete sector. */
disk->total_sectors = ((file->size + GRUB_DISK_SECTOR_SIZE - 1)
disk->total_sectors = ((dev->file->size + GRUB_DISK_SECTOR_SIZE - 1)
/ GRUB_DISK_SECTOR_SIZE);
disk->id = (unsigned long) dev;
disk->has_partitions = dev->has_partitions;
disk->data = file;
disk->data = dev->file;
return 0;
}
static void
grub_loopback_close (grub_disk_t disk)
{
grub_file_t file = (grub_file_t) disk->data;
grub_file_close (file);
}
static grub_err_t
grub_loopback_read (grub_disk_t disk, grub_disk_addr_t sector,
grub_size_t size, char *buf)
@ -234,7 +218,6 @@ static struct grub_disk_dev grub_loopback_dev =
.id = GRUB_DISK_DEVICE_LOOPBACK_ID,
.iterate = grub_loopback_iterate,
.open = grub_loopback_open,
.close = grub_loopback_close,
.read = grub_loopback_read,
.write = grub_loopback_write,
.next = 0

269
disk/mdraid_linux.c
View file

@ -1,7 +1,7 @@
/* mdraid_linux.c - module to handle linux softraid. */
/* mdraid_linux.c - module to handle Linux Software RAID. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008 Free Software Foundation, Inc.
* Copyright (C) 2008,2009,2010 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
@ -159,63 +159,254 @@ struct grub_raid_super_09
struct grub_raid_disk_09 this_disk;
} __attribute__ ((packed));
static grub_err_t
grub_mdraid_detect (grub_disk_t disk, struct grub_raid_array *array)
/*
* The version-1 superblock :
* All numeric fields are little-endian.
*
* Total size: 256 bytes plus 2 per device.
* 1K allows 384 devices.
*/
struct grub_raid_super_1x
{
/* Constant array information - 128 bytes. */
grub_uint32_t magic; /* MD_SB_MAGIC: 0xa92b4efc - little endian. */
grub_uint32_t major_version; /* 1. */
grub_uint32_t feature_map; /* Bit 0 set if 'bitmap_offset' is meaningful. */
grub_uint32_t pad0; /* Always set to 0 when writing. */
grub_uint8_t set_uuid[16]; /* User-space generated. */
char set_name[32]; /* Set and interpreted by user-space. */
grub_uint64_t ctime; /* Lo 40 bits are seconds, top 24 are microseconds or 0. */
grub_uint32_t level; /* -4 (multipath), -1 (linear), 0,1,4,5. */
grub_uint32_t layout; /* only for raid5 and raid10 currently. */
grub_uint64_t size; /* Used size of component devices, in 512byte sectors. */
grub_uint32_t chunksize; /* In 512byte sectors. */
grub_uint32_t raid_disks;
grub_uint32_t bitmap_offset; /* Sectors after start of superblock that bitmap starts
* NOTE: signed, so bitmap can be before superblock
* only meaningful of feature_map[0] is set.
*/
/* These are only valid with feature bit '4'. */
grub_uint32_t new_level; /* New level we are reshaping to. */
grub_uint64_t reshape_position; /* Next address in array-space for reshape. */
grub_uint32_t delta_disks; /* Change in number of raid_disks. */
grub_uint32_t new_layout; /* New layout. */
grub_uint32_t new_chunk; /* New chunk size (512byte sectors). */
grub_uint8_t pad1[128 - 124]; /* Set to 0 when written. */
/* Constant this-device information - 64 bytes. */
grub_uint64_t data_offset; /* Sector start of data, often 0. */
grub_uint64_t data_size; /* Sectors in this device that can be used for data. */
grub_uint64_t super_offset; /* Sector start of this superblock. */
grub_uint64_t recovery_offset; /* Sectors before this offset (from data_offset) have been recovered. */
grub_uint32_t dev_number; /* Permanent identifier of this device - not role in raid. */
grub_uint32_t cnt_corrected_read; /* Number of read errors that were corrected by re-writing. */
grub_uint8_t device_uuid[16]; /* User-space setable, ignored by kernel. */
grub_uint8_t devflags; /* Per-device flags. Only one defined... */
grub_uint8_t pad2[64 - 57]; /* Set to 0 when writing. */
/* Array state information - 64 bytes. */
grub_uint64_t utime; /* 40 bits second, 24 btes microseconds. */
grub_uint64_t events; /* Incremented when superblock updated. */
grub_uint64_t resync_offset; /* Data before this offset (from data_offset) known to be in sync. */
grub_uint32_t sb_csum; /* Checksum upto devs[max_dev]. */
grub_uint32_t max_dev; /* Size of devs[] array to consider. */
grub_uint8_t pad3[64 - 32]; /* Set to 0 when writing. */
/* Device state information. Indexed by dev_number.
* 2 bytes per device.
* Note there are no per-device state flags. State information is rolled
* into the 'roles' value. If a device is spare or faulty, then it doesn't
* have a meaningful role.
*/
grub_uint16_t dev_roles[0]; /* Role in array, or 0xffff for a spare, or 0xfffe for faulty. */
};
/* Could be __attribute__ ((packed)), but since all members in this struct
are already appropriately aligned, we can omit this and avoid suboptimal
assembly in some cases. */
#define WriteMostly1 1 /* Mask for writemostly flag in above devflags. */
static grub_err_t
grub_mdraid_detect_09 (grub_disk_addr_t sector,
struct grub_raid_super_09 *sb,
struct grub_raid_array *array,
grub_disk_addr_t *start_sector)
{
grub_disk_addr_t sector;
grub_uint64_t size;
struct grub_raid_super_09 sb;
grub_uint32_t *uuid;
/* The sector where the RAID superblock is stored, if available. */
size = grub_disk_get_size (disk);
sector = NEW_SIZE_SECTORS (size);
if (grub_disk_read (disk, sector, 0, SB_BYTES, &sb))
return grub_errno;
/* Look whether there is a RAID superblock. */
if (sb.md_magic != SB_MAGIC)
return grub_error (GRUB_ERR_OUT_OF_RANGE, "not raid");
/* FIXME: Also support version 1.0. */
if (sb.major_version != 0 || sb.minor_version != 90)
if (sb->major_version != 0 || sb->minor_version != 90)
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"unsupported RAID version: %d.%d",
sb.major_version, sb.minor_version);
sb->major_version, sb->minor_version);
/* FIXME: Check the checksum. */
/* FIXME: Check the checksum. */
/* Multipath. */
if ((int) sb.level == -4)
sb.level = 1;
if ((int) sb->level == -4)
sb->level = 1;
if (sb.level != 0 && sb.level != 1 && sb.level != 4 &&
sb.level != 5 && sb.level != 6 && sb.level != 10)
if (sb->level != 0 && sb->level != 1 && sb->level != 4 &&
sb->level != 5 && sb->level != 6 && sb->level != 10)
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"unsupported RAID level: %d", sb.level);
"unsupported RAID level: %d", sb->level);
array->number = sb.md_minor;
array->level = sb.level;
array->layout = sb.layout;
array->total_devs = sb.raid_disks;
array->disk_size = (sb.size) ? sb.size * 2 : sector;
array->chunk_size = sb.chunk_size >> 9;
array->index = sb.this_disk.number;
array->name = NULL;
array->number = sb->md_minor;
array->level = sb->level;
array->layout = sb->layout;
array->total_devs = sb->raid_disks;
array->disk_size = (sb->size) ? sb->size * 2 : sector;
array->chunk_size = sb->chunk_size >> 9;
array->index = sb->this_disk.number;
array->uuid_len = 16;
array->uuid = grub_malloc (16);
if (!array->uuid)
return grub_errno;
return grub_errno;
uuid = (grub_uint32_t *) array->uuid;
uuid[0] = sb.set_uuid0;
uuid[1] = sb.set_uuid1;
uuid[2] = sb.set_uuid2;
uuid[3] = sb.set_uuid3;
uuid[0] = sb->set_uuid0;
uuid[1] = sb->set_uuid1;
uuid[2] = sb->set_uuid2;
uuid[3] = sb->set_uuid3;
*start_sector = 0;
return 0;
}
static grub_err_t
grub_mdraid_detect_1x (grub_disk_t disk, grub_disk_addr_t sector,
struct grub_raid_super_1x *sb,
struct grub_raid_array *array,
grub_disk_addr_t *start_sector)
{
grub_uint64_t sb_size;
struct grub_raid_super_1x *real_sb;
if (sb->major_version != 1)
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"Unsupported RAID version: %d",
sb->major_version);
/* Multipath. */
if ((int) sb->level == -4)
sb->level = 1;
if (sb->level != 0 && sb->level != 1 && sb->level != 4 &&
sb->level != 5 && sb->level != 6 && sb->level != 10)
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"Unsupported RAID level: %d", sb->level);
/* 1.x superblocks don't have a fixed size on disk. So we have to
read it again now that we now the max device count. */
sb_size = sizeof (struct grub_raid_super_1x) + 2 * grub_le_to_cpu32 (sb->max_dev);
real_sb = grub_malloc (sb_size);
if (! real_sb)
return grub_errno;
if (grub_disk_read (disk, sector, 0, sb_size, real_sb))
{
grub_free (real_sb);
return grub_errno;
}
array->name = grub_strdup (real_sb->set_name);
if (! array->name)
{
grub_free (real_sb);
return grub_errno;
}
array->number = 0;
array->level = grub_le_to_cpu32 (real_sb->level);
array->layout = grub_le_to_cpu32 (real_sb->layout);
array->total_devs = grub_le_to_cpu32 (real_sb->raid_disks);
array->disk_size = grub_le_to_cpu64 (real_sb->size);
array->chunk_size = grub_le_to_cpu32 (real_sb->chunksize);
if (grub_le_to_cpu32 (real_sb->dev_number) <
grub_le_to_cpu32 (real_sb->max_dev))
array->index = grub_le_to_cpu16
(real_sb->dev_roles[grub_le_to_cpu32 (real_sb->dev_number)]);
else
array->index = 0xffff; /* disk will be later not used! */
array->uuid_len = 16;
array->uuid = grub_malloc (16);
if (!array->uuid)
{
grub_free (real_sb);
return grub_errno;
}
grub_memcpy (array->uuid, real_sb->set_uuid, 16);
*start_sector = real_sb->data_offset;
grub_free (real_sb);
return 0;
}
static grub_err_t
grub_mdraid_detect (grub_disk_t disk, struct grub_raid_array *array,
grub_disk_addr_t *start_sector)
{
grub_disk_addr_t sector;
grub_uint64_t size;
struct grub_raid_super_09 sb_09;
struct grub_raid_super_1x sb_1x;
grub_uint8_t minor_version;
/* The sector where the mdraid 0.90 superblock is stored, if available. */
size = grub_disk_get_size (disk);
sector = NEW_SIZE_SECTORS (size);
if (grub_disk_read (disk, sector, 0, SB_BYTES, &sb_09))
return grub_errno;
/* Look whether there is a mdraid 0.90 superblock. */
if (sb_09.md_magic == SB_MAGIC)
return grub_mdraid_detect_09 (sector, &sb_09, array, start_sector);
/* Check for an 1.x superblock.
* It's always aligned to a 4K boundary
* and depending on the minor version it can be:
* 0: At least 8K, but less than 12K, from end of device
* 1: At start of device
* 2: 4K from start of device.
*/
for (minor_version = 0; minor_version < 3; ++minor_version)
{
switch (minor_version)
{
case 0:
sector = (size - 8 * 2) & ~(4 * 2 - 1);
break;
case 1:
sector = 0;
break;
case 2:
sector = 4 * 2;
break;
}
if (grub_disk_read (disk, sector, 0, sizeof (struct grub_raid_super_1x),
&sb_1x))
return grub_errno;
if (sb_1x.magic == SB_MAGIC)
return grub_mdraid_detect_1x (disk, sector, &sb_1x, array,
start_sector);
}
/* Neither 0.90 nor 1.x. */
return grub_error (GRUB_ERR_OUT_OF_RANGE, "not raid");
}
static struct grub_raid grub_mdraid_dev = {
.name = "mdraid",
.detect = grub_mdraid_detect,

102
disk/raid.c
View file

@ -1,7 +1,7 @@
/* raid.c - module to read RAID arrays. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2006,2007,2008,2009 Free Software Foundation, Inc.
* Copyright (C) 2006,2007,2008,2009,2010 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
@ -254,7 +254,8 @@ grub_raid_read (grub_disk_t disk, grub_disk_addr_t sector,
grub_errno = GRUB_ERR_NONE;
err = grub_disk_read (array->device[k],
read_sector + j * far_ofs + b,
array->start_sector[k] +
read_sector + j * far_ofs + b,
0,
read_size << GRUB_DISK_SECTOR_BITS,
buf);
@ -366,7 +367,8 @@ grub_raid_read (grub_disk_t disk, grub_disk_addr_t sector,
grub_errno = GRUB_ERR_NONE;
err = grub_disk_read (array->device[disknr],
read_sector + b, 0,
array->start_sector[disknr] +
read_sector + b, 0,
read_size << GRUB_DISK_SECTOR_BITS,
buf);
@ -475,12 +477,12 @@ grub_raid_write (grub_disk_t disk __attribute ((unused)),
static grub_err_t
insert_array (grub_disk_t disk, struct grub_raid_array *new_array,
const char *scanner_name)
grub_disk_addr_t start_sector, const char *scanner_name)
{
struct grub_raid_array *array = 0, *p;
/* See whether the device is part of an array we have already seen a
device from. */
device from. */
for (p = array_list; p != NULL; p = p->next)
if ((p->uuid_len == new_array->uuid_len) &&
(! grub_memcmp (p->uuid, new_array->uuid, p->uuid_len)))
@ -491,7 +493,7 @@ insert_array (grub_disk_t disk, struct grub_raid_array *new_array,
/* Do some checks before adding the device to the array. */
/* FIXME: Check whether the update time of the superblocks are
the same. */
the same. */
if (array->total_devs == array->nr_devs)
/* We found more members of the array than the array
@ -502,7 +504,7 @@ insert_array (grub_disk_t disk, struct grub_raid_array *new_array,
if (array->device[new_array->index] != NULL)
/* We found multiple devices with the same number. Again,
this shouldn't happen.*/
this shouldn't happen. */
grub_dprintf ("raid", "Found two disks with the number %d?!?",
new_array->number);
@ -524,46 +526,72 @@ insert_array (grub_disk_t disk, struct grub_raid_array *new_array,
*array = *new_array;
array->nr_devs = 0;
grub_memset (&array->device, 0, sizeof (array->device));
grub_memset (&array->start_sector, 0, sizeof (array->start_sector));
/* Check whether we don't have multiple arrays with the same number. */
if (array->name)
goto skip_duplicate_check;
/* Check whether we don't have multiple arrays with the same number. */
for (p = array_list; p != NULL; p = p->next)
{
if (p->number == array->number)
break;
if (p->number == array->number)
break;
}
if (p)
{
/* The number is already in use, so we need to find an new number. */
/* The number is already in use, so we need to find a new one. */
int i = 0;
while (1)
{
for (p = array_list; p != NULL; p = p->next)
{
if (p->number == i)
break;
}
while (1)
{
for (p = array_list; p != NULL; p = p->next)
{
if (p->number == i)
break;
}
if (!p)
{
/* We found an unused number. */
array->number = i;
break;
}
if (! p)
{
/* We found an unused number. */
array->number = i;
break;
}
i++;
}
}
array->name = grub_xasprintf ("md%d", array->number);
i++;
}
}
skip_duplicate_check:
/* mdraid 1.x superblocks have only a name stored not a number.
Use it directly as GRUB device. */
if (! array->name)
{
grub_free (array->uuid);
grub_free (array);
{
array->name = grub_xasprintf ("md%d", array->number);
if (! array->name)
{
grub_free (array->uuid);
grub_free (array);
return grub_errno;
}
return grub_errno;
}
}
else
{
/* Strip off the homehost if present. */
char *colon = grub_strchr (array->name, ':');
char *new_name = grub_xasprintf ("md/%s",
colon ? colon + 1 : array->name);
if (! new_name)
{
grub_free (array->uuid);
grub_free (array);
return grub_errno;
}
grub_free (array->name);
array->name = new_name;
}
grub_dprintf ("raid", "Found array %s (%s)\n", array->name,
scanner_name);
@ -580,6 +608,7 @@ insert_array (grub_disk_t disk, struct grub_raid_array *new_array,
/* Add the device to the array. */
array->device[new_array->index] = disk;
array->start_sector[new_array->index] = start_sector;
array->nr_devs++;
return 0;
@ -621,6 +650,7 @@ grub_raid_register (grub_raid_t raid)
{
grub_disk_t disk;
struct grub_raid_array array;
grub_disk_addr_t start_sector;
grub_dprintf ("raid", "Scanning for RAID devices on disk %s\n", name);
@ -629,8 +659,8 @@ grub_raid_register (grub_raid_t raid)
return 0;
if ((disk->total_sectors != GRUB_ULONG_MAX) &&
(! grub_raid_list->detect (disk, &array)) &&
(! insert_array (disk, &array, grub_raid_list->name)))
(! grub_raid_list->detect (disk, &array, &start_sector)) &&
(! insert_array (disk, &array, start_sector, grub_raid_list->name)))
return 0;
/* This error usually means it's not raid, no need to display