vbatts/grub
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

merge lazy into luks

Browse source
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-04-22 15:13:12 +02:00
commit 0aaa85f1a0
23 changed files with 542 additions and 193 deletions
Download patch file Download diff file Expand all files Collapse all files

9
grub-core/disk/ata.c
View file

@ -666,10 +666,14 @@ grub_ata_readwrite (grub_disk_t disk, grub_disk_addr_t sector,
static int
grub_ata_iterate (int (*hook) (const char *name))
grub_ata_iterate (int (*hook) (const char *name),
grub_disk_pull_t pull)
{
struct grub_ata_device *dev;
if (pull != GRUB_DISK_PULL_NONE)
return 0;
for (dev = grub_ata_devices; dev; dev = dev->next)
{
char devname[10];
@ -696,7 +700,8 @@ grub_ata_iterate (int (*hook) (const char *name))
}
static grub_err_t
grub_ata_open (const char *name, grub_disk_t disk)
grub_ata_open (const char *name, grub_disk_t disk,
grub_disk_pull_t pull __attribute__ ((unused)))
{
struct grub_ata_device *dev;
grub_err_t err;

9
grub-core/disk/host.c
View file

@ -27,15 +27,20 @@
int grub_disk_host_i_want_a_reference;
static int
grub_host_iterate (int (*hook) (const char *name))
grub_host_iterate (int (*hook) (const char *name),
grub_disk_pull_t pull)
{
if (pull != GRUB_DISK_PULL_NONE)
return 0;
if (hook ("host"))
return 1;
return 0;
}
static grub_err_t
grub_host_open (const char *name, grub_disk_t disk)
grub_host_open (const char *name, grub_disk_t disk,
grub_disk_pull_t pull __attribute__ ((unused)))
{
if (grub_strcmp (name, "host"))
return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "not a host disk");

56
grub-core/disk/i386/pc/biosdisk.c
View file

@ -284,42 +284,52 @@ grub_biosdisk_call_hook (int (*hook) (const char *name), int drive)
}
static int
grub_biosdisk_iterate (int (*hook) (const char *name))
grub_biosdisk_iterate (int (*hook) (const char *name),
grub_disk_pull_t pull __attribute__ ((unused)))
{
int drive;
int num_floppies;
int drive;
/* For hard disks, attempt to read the MBR. */
for (drive = 0x80; drive < 0x90; drive++)
switch (pull)
{
if (grub_biosdisk_rw_standard (0x02, drive, 0, 0, 1, 1,
GRUB_MEMORY_MACHINE_SCRATCH_SEG) != 0)
case GRUB_DISK_PULL_NONE:
for (drive = 0x80; drive < 0x90; drive++)
{
grub_dprintf ("disk", "Read error when probing drive 0x%2x\n", drive);
break;
if (grub_biosdisk_rw_standard (0x02, drive, 0, 0, 1, 1,
GRUB_MEMORY_MACHINE_SCRATCH_SEG) != 0)
{
grub_dprintf ("disk", "Read error when probing drive 0x%2x\n", drive);
break;
}
if (grub_biosdisk_call_hook (hook, drive))
return 1;
}
return 0;
case GRUB_DISK_PULL_REMOVABLE:
if (cd_drive)
{
if (grub_biosdisk_call_hook (hook, cd_drive))
return 1;
}
if (grub_biosdisk_call_hook (hook, drive))
return 1;
/* For floppy disks, we can get the number safely. */
num_floppies = grub_biosdisk_get_num_floppies ();
for (drive = 0; drive < num_floppies; drive++)
if (grub_biosdisk_call_hook (hook, drive))
return 1;
return 0;
default:
return 0;
}
if (cd_drive)
{
if (grub_biosdisk_call_hook (hook, cd_drive))
return 1;
}
/* For floppy disks, we can get the number safely. */
num_floppies = grub_biosdisk_get_num_floppies ();
for (drive = 0; drive < num_floppies; drive++)
if (grub_biosdisk_call_hook (hook, drive))
return 1;
return 0;
}
static grub_err_t
grub_biosdisk_open (const char *name, grub_disk_t disk)
grub_biosdisk_open (const char *name, grub_disk_t disk,
grub_disk_pull_t pull __attribute__ ((unused)))
{
grub_uint64_t total_sectors = 0;
int drive;

8
grub-core/disk/loopback.c
View file

@ -133,9 +133,12 @@ fail:
static int
grub_loopback_iterate (int (*hook) (const char *name))
grub_loopback_iterate (int (*hook) (const char *name),
grub_disk_pull_t pull)
{
struct grub_loopback *d;
if (pull != GRUB_DISK_PULL_NONE)
return 0;
for (d = loopback_list; d; d = d->next)
{
if (hook (d->devname))
@ -145,7 +148,8 @@ grub_loopback_iterate (int (*hook) (const char *name))
}
static grub_err_t
grub_loopback_open (const char *name, grub_disk_t disk)
grub_loopback_open (const char *name, grub_disk_t disk,
grub_disk_pull_t pull __attribute__ ((unused)))
{
struct grub_loopback *dev;

9
grub-core/disk/luks.c
View file

@ -498,10 +498,14 @@ grub_luks_scan_device (const char *name)
}
static int
grub_luks_iterate (int (*hook) (const char *name))
grub_luks_iterate (int (*hook) (const char *name),
grub_disk_pull_t pull)
{
grub_luks_t i;
if (pull != GRUB_DISK_PULL_NONE)
return 0;
for (i = luks_list; i != NULL; i = i->next)
{
char buf[30];
@ -514,7 +518,8 @@ grub_luks_iterate (int (*hook) (const char *name))
}
static grub_err_t
grub_luks_open (const char *name, grub_disk_t disk)
grub_luks_open (const char *name, grub_disk_t disk,
grub_disk_pull_t pull __attribute__ ((unused)))
{
grub_luks_t dev;

178
grub-core/disk/lvm.c
View file

@ -26,13 +26,19 @@
#ifdef GRUB_UTIL
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#endif
GRUB_MOD_LICENSE ("GPLv3+");
static struct grub_lvm_vg *vg_list;
static int lv_count;
static int scan_depth = 0;
static int is_lv_readable (struct grub_lvm_lv *lv);
static int
grub_lvm_scan_device (const char *name);
/* Go the string STR and return the number after STR. *P will point
at the number. In case STR is not found, *P will be NULL and the
@ -96,16 +102,36 @@ grub_lvm_check_flag (char *p, char *str, char *flag)
}
static int
grub_lvm_iterate (int (*hook) (const char *name))
grub_lvm_iterate (int (*hook) (const char *name),
grub_disk_pull_t pull)
{
struct grub_lvm_vg *vg;
unsigned old_count = 0;
if (pull == GRUB_DISK_PULL_RESCAN && scan_depth)
return 0;
if (pull == GRUB_DISK_PULL_RESCAN)
{
old_count = lv_count;
if (!scan_depth)
{
scan_depth++;
grub_device_iterate (&grub_lvm_scan_device);
scan_depth--;
}
}
if (pull != GRUB_DISK_PULL_RESCAN && pull != GRUB_DISK_PULL_NONE)
return GRUB_ERR_NONE;
for (vg = vg_list; vg; vg = vg->next)
{
struct grub_lvm_lv *lv;
if (vg->lvs)
for (lv = vg->lvs; lv; lv = lv->next)
if (lv->visible && hook (lv->name))
return 1;
if (lv->visible && lv->number >= old_count)
{
if (hook (lv->fullname))
return 1;
}
}
return 0;
@ -135,8 +161,8 @@ grub_lvm_memberlist (grub_disk_t disk)
}
#endif
static grub_err_t
grub_lvm_open (const char *name, grub_disk_t disk)
static struct grub_lvm_lv *
find_lv (const char *name)
{
struct grub_lvm_vg *vg;
struct grub_lvm_lv *lv = NULL;
@ -144,11 +170,42 @@ grub_lvm_open (const char *name, grub_disk_t disk)
{
if (vg->lvs)
for (lv = vg->lvs; lv; lv = lv->next)
if (! grub_strcmp (lv->name, name))
break;
if ((grub_strcmp (lv->fullname, name) == 0
|| grub_strcmp (lv->compatname, name) == 0)
&& is_lv_readable (lv))
return lv;
}
return NULL;
}
if (lv)
break;
static const char *scan_for = NULL;
static grub_err_t
grub_lvm_open (const char *name, grub_disk_t disk,
grub_disk_pull_t pull)
{
struct grub_lvm_lv *lv = NULL;
int explicit = 0;
if (grub_memcmp (name, "lvm/", sizeof ("lvm/") - 1) == 0)
explicit = 1;
lv = find_lv (name);
if (! lv && !scan_depth &&
pull == (explicit ? GRUB_DISK_PULL_RESCAN : GRUB_DISK_PULL_RESCAN_UNTYPED))
{
scan_for = name;
scan_depth++;
grub_device_iterate (&grub_lvm_scan_device);
scan_depth--;
scan_for = NULL;
if (grub_errno)
{
grub_print_error ();
grub_errno = GRUB_ERR_NONE;
}
lv = find_lv (name);
}
if (! lv)
@ -285,6 +342,49 @@ read_lv (struct grub_lvm_lv *lv, grub_disk_addr_t sector,
return grub_error (GRUB_ERR_IO, "unknown LVM segment");
}
static grub_err_t
is_node_readable (const struct grub_lvm_node *node)
{
/* Check whether we actually know the physical volume we want to
read from. */
if (node->pv)
return !!(node->pv->disk);
if (node->lv)
return is_lv_readable (node->lv);
return 0;
}
static int
is_lv_readable (struct grub_lvm_lv *lv)
{
unsigned int i, j;
if (!lv)
return 0;
/* Find the right segment. */
for (i = 0; i < lv->segment_count; i++)
switch (lv->segments[i].type)
{
case GRUB_LVM_STRIPED:
for (j = 0; j < lv->segments[i].node_count; j++)
if (!is_node_readable (lv->segments[i].nodes + j))
return 0;
break;
case GRUB_LVM_MIRROR:
for (j = 0; j < lv->segments[i].node_count; j++)
if (is_node_readable (lv->segments[i].nodes + j))
break;
if (j == lv->segments[i].node_count)
return 0;
default:
return 0;
}
return 1;
}
static grub_err_t
grub_lvm_read (grub_disk_t disk, grub_disk_addr_t sector,
grub_size_t size, char *buf)
@ -332,6 +432,15 @@ grub_lvm_scan_device (const char *name)
return 0;
}
for (vg = vg_list; vg; vg = vg->next)
for (pv = vg->pvs; pv; pv = pv->next)
if (pv->disk && pv->disk->id == disk->id
&& pv->disk->dev->id == disk->dev->id)
{
grub_disk_close (disk);
return 0;
}
/* Search for label. */
for (i = 0; i < GRUB_LVM_LABEL_SCAN_SECTORS; i++)
{
@ -573,11 +682,43 @@ grub_lvm_scan_device (const char *name)
q++;
s = q - p;
lv->name = grub_malloc (vgname_len + 1 + s + 1);
grub_memcpy (lv->name, vgname, vgname_len);
lv->name[vgname_len] = '-';
grub_memcpy (lv->name + vgname_len + 1, p, s);
lv->name[vgname_len + 1 + s] = '\0';
lv->name = grub_strndup (p, s);
if (!lv->name)
goto lvs_fail;
lv->compatname = grub_malloc (vgname_len + 1 + s + 1);
if (!lv->compatname)
goto lvs_fail;
grub_memcpy (lv->compatname, vgname, vgname_len);
lv->compatname[vgname_len] = '-';
grub_memcpy (lv->compatname + vgname_len + 1, p, s);
lv->compatname[vgname_len + 1 + s] = '\0';
{
const char *iptr;
char *optr;
lv->fullname = grub_malloc (sizeof("lvm/") + 2 * vgname_len
+ 1 + 2 * s + 1);
if (!lv->fullname)
goto lvs_fail;
optr = lv->fullname;
grub_memcpy (optr, "lvm/", sizeof ("lvm/") - 1);
optr += sizeof ("lvm/") - 1;
for (iptr = vgname; iptr < vgname + vgname_len; iptr++)
{
*optr++ = *iptr;
if (*iptr == '-')
*optr++ = '-';
}
*optr++ = '-';
for (iptr = p; iptr < p + s; iptr++)
{
*optr++ = *iptr;
if (*iptr == '-')
*optr++ = '-';
}
*optr++ = 0;
}
lv->size = 0;
@ -857,6 +998,8 @@ grub_lvm_scan_device (const char *name)
if (grub_errno == GRUB_ERR_OUT_OF_RANGE)
grub_errno = GRUB_ERR_NONE;
grub_print_error ();
if (scan_for && find_lv (scan_for))
return 1;
return 0;
}
@ -878,13 +1021,6 @@ static struct grub_disk_dev grub_lvm_dev =
GRUB_MOD_INIT(lvm)
{
grub_device_iterate (&grub_lvm_scan_device);
if (grub_errno)
{
grub_print_error ();
grub_errno = GRUB_ERR_NONE;
}
grub_disk_dev_register (&grub_lvm_dev);
}

9
grub-core/disk/memdisk.c
View file

@ -30,13 +30,18 @@ static char *memdisk_addr;
static grub_off_t memdisk_size = 0;
static int
grub_memdisk_iterate (int (*hook) (const char *name))
grub_memdisk_iterate (int (*hook) (const char *name),
grub_disk_pull_t pull)
{
if (pull != GRUB_DISK_PULL_NONE)
return 0;
return hook ("memdisk");
}
static grub_err_t
grub_memdisk_open (const char *name, grub_disk_t disk)
grub_memdisk_open (const char *name, grub_disk_t disk,
grub_disk_pull_t pull __attribute__ ((unused)))
{
if (grub_strcmp (name, "memdisk"))
return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "not a memdisk");

178
grub-core/disk/raid.c
View file

@ -33,6 +33,11 @@ GRUB_MOD_LICENSE ("GPLv3+");
static struct grub_raid_array *array_list;
grub_raid5_recover_func_t grub_raid5_recover_func;
grub_raid6_recover_func_t grub_raid6_recover_func;
static grub_raid_t grub_raid_list;
static int inscnt = 0;
static struct grub_raid_array *
find_array (const char *name);
static char
@ -78,14 +83,98 @@ grub_is_array_readable (struct grub_raid_array *array)
return 0;
}
static grub_err_t
insert_array (grub_disk_t disk, struct grub_raid_array *new_array,
grub_disk_addr_t start_sector, const char *scanner_name,
grub_raid_t raid __attribute__ ((unused)));
static int scan_depth = 0;
static void
scan_devices (const char *arname)
{
grub_raid_t raid;
auto int hook (const char *name);
int hook (const char *name)
{
grub_disk_t disk;
struct grub_raid_array array;
struct grub_raid_array *arr;
grub_disk_addr_t start_sector;
grub_dprintf ("raid", "Scanning for %s RAID devices on disk %s\n",
raid->name, name);
#ifdef GRUB_UTIL
grub_util_info ("Scanning for %s RAID devices on disk %s",
raid->name, name);
#endif
disk = grub_disk_open (name);
if (!disk)
return 0;
for (arr = array_list; arr != NULL; arr = arr->next)
{
struct grub_raid_member *m;
for (m = arr->members; m < arr->members + arr->nr_devs; m++)
if (m->device && m->device->id == disk->id
&& m->device->dev->id == m->device->dev->id)
{
grub_disk_close (disk);
return 0;
}
}
if ((disk->total_sectors != GRUB_ULONG_MAX) &&
(! raid->detect (disk, &array, &start_sector)) &&
(! insert_array (disk, &array, start_sector, raid->name,
raid)))
return 0;
/* This error usually means it's not raid, no need to display
it. */
if (grub_errno != GRUB_ERR_OUT_OF_RANGE)
grub_print_error ();
grub_errno = GRUB_ERR_NONE;
grub_disk_close (disk);
if (arname && find_array (arname))
return 1;
return 0;
}
if (scan_depth)
return;
scan_depth++;
for (raid = grub_raid_list; raid; raid = raid->next)
grub_device_iterate (&hook);
scan_depth--;
}
static int
grub_raid_iterate (int (*hook) (const char *name))
grub_raid_iterate (int (*hook) (const char *name),
grub_disk_pull_t pull)
{
struct grub_raid_array *array;
int islcnt = 0;
if (pull == GRUB_DISK_PULL_RESCAN)
{
islcnt = inscnt;
scan_devices (NULL);
}
if (pull != GRUB_DISK_PULL_NONE && pull != GRUB_DISK_PULL_RESCAN)
return 0;
for (array = array_list; array != NULL; array = array->next)
{
if (grub_is_array_readable (array))
if (grub_is_array_readable (array) && array->became_readable_at >= islcnt)
if (hook (array->name))
return 1;
}
@ -134,11 +223,10 @@ ascii2hex (char c)
return 0;
}
static grub_err_t
grub_raid_open (const char *name, grub_disk_t disk)
static struct grub_raid_array *
find_array (const char *name)
{
struct grub_raid_array *array;
unsigned n;
if (grub_memcmp (name, "mduuid/", sizeof ("mduuid/") - 1) == 0)
{
@ -155,7 +243,7 @@ grub_raid_open (const char *name, grub_disk_t disk)
if (uuid_len == (unsigned) array->uuid_len
&& grub_memcmp (uuidbin, array->uuid, uuid_len) == 0)
if (grub_is_array_readable (array))
break;
return array;
}
}
else
@ -163,8 +251,33 @@ grub_raid_open (const char *name, grub_disk_t disk)
{
if (!grub_strcmp (array->name, name))
if (grub_is_array_readable (array))
break;
return array;
}
return NULL;
}
static grub_err_t
grub_raid_open (const char *name, grub_disk_t disk, grub_disk_pull_t pull)
{
struct grub_raid_array *array;
unsigned n;
if (grub_memcmp (name, "md", sizeof ("md") - 1) != 0)
return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "unknown RAID device %s",
name);
array = find_array (name);
if (! array && pull == GRUB_DISK_PULL_RESCAN)
{
scan_devices (name);
if (grub_errno)
{
grub_print_error ();
grub_errno = GRUB_ERR_NONE;
}
array = find_array (name);
}
if (!array)
return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "unknown RAID device %s",
@ -690,15 +803,19 @@ insert_array (grub_disk_t disk, struct grub_raid_array *new_array,
}
/* Add the device to the array. */
array->members[new_array->index].device = disk;
array->members[new_array->index].start_sector = start_sector;
array->nr_devs++;
{
int was_readable = grub_is_array_readable (array);
array->members[new_array->index].device = disk;
array->members[new_array->index].start_sector = start_sector;
array->nr_devs++;
if (!was_readable && grub_is_array_readable (array))
array->became_readable_at = inscnt++;
}
return 0;
}
static grub_raid_t grub_raid_list;
static void
free_array (void)
{
@ -729,45 +846,8 @@ free_array (void)
void
grub_raid_register (grub_raid_t raid)
{
auto int hook (const char *name);
int hook (const char *name)
{
grub_disk_t disk;
struct grub_raid_array array;
grub_disk_addr_t start_sector;
grub_dprintf ("raid", "Scanning for %s RAID devices on disk %s\n",
grub_raid_list->name, name);
#ifdef GRUB_UTIL
grub_util_info ("Scanning for %s RAID devices on disk %s",
grub_raid_list->name, name);
#endif
disk = grub_disk_open (name);
if (!disk)
return 0;
if ((disk->total_sectors != GRUB_ULONG_MAX) &&
(! grub_raid_list->detect (disk, &array, &start_sector)) &&
(! insert_array (disk, &array, start_sector, grub_raid_list->name,
grub_raid_list)))
return 0;
/* This error usually means it's not raid, no need to display
it. */
if (grub_errno != GRUB_ERR_OUT_OF_RANGE)
grub_print_error ();
grub_errno = GRUB_ERR_NONE;
grub_disk_close (disk);
return 0;
}
raid->next = grub_raid_list;
grub_raid_list = raid;
grub_device_iterate (&hook);
}
void

9
grub-core/disk/scsi.c
View file

@ -316,7 +316,8 @@ grub_scsi_write12 (grub_disk_t disk, grub_disk_addr_t sector,
static int
grub_scsi_iterate (int (*hook) (const char *name))
grub_scsi_iterate (int (*hook) (const char *name),
grub_disk_pull_t pull)
{
grub_scsi_dev_t p;
@ -356,6 +357,9 @@ grub_scsi_iterate (int (*hook) (const char *name))
return 0;
}
if (pull != GRUB_DISK_PULL_NONE)
return 0;
for (p = grub_scsi_dev_list; p; p = p->next)
if (p->iterate && (p->iterate) (scsi_iterate))
return 1;
@ -364,7 +368,8 @@ grub_scsi_iterate (int (*hook) (const char *name))
}
static grub_err_t
grub_scsi_open (const char *name, grub_disk_t disk)
grub_scsi_open (const char *name, grub_disk_t disk,
grub_disk_pull_t pull __attribute__ ((unused)))
{
grub_scsi_dev_t p;
grub_scsi_t scsi;