static int bl_dm_create_tree(uint64_t dev)
{
struct dm_tree *tree;
struct bl_dm_tree *bl_tree;
bl_tree = find_bl_dm_tree(dev);
if (bl_tree)
return 1;
tree = dm_tree_create();
if (!tree)
return 0;
if (!dm_tree_add_dev(tree, MAJOR(dev), MINOR(dev))) {
dm_tree_free(tree);
return 0;
}
bl_tree = malloc(sizeof(struct bl_dm_tree));
if (!bl_tree) {
dm_tree_free(tree);
return 0;
}
bl_tree->dev = dev;
bl_tree->tree = tree;
bl_tree->next = NULL;
add_to_bl_dm_tree(bl_tree);
return 1;
}
static int
grub_util_open_dm (const char *os_dev, struct dm_tree **tree,
struct dm_tree_node **node)
{
uint32_t maj, min;
struct stat st;
*node = NULL;
*tree = NULL;
if (stat (os_dev, &st) < 0)
return 0;
maj = major (st.st_rdev);
min = minor (st.st_rdev);
if (!dm_is_dm_major (maj))
return 0;
*tree = dm_tree_create ();
if (! *tree)
{
grub_puts_ (N_("Failed to create `device-mapper' tree"));
grub_dprintf ("hostdisk", "dm_tree_create failed\n");
return 0;
}
if (! dm_tree_add_dev (*tree, maj, min))
{
grub_dprintf ("hostdisk", "dm_tree_add_dev failed\n");
dm_tree_free (*tree);
*tree = NULL;
return 0;
}
*node = dm_tree_find_node (*tree, maj, min);
if (! *node)
{
grub_dprintf ("hostdisk", "dm_tree_find_node failed\n");
dm_tree_free (*tree);
*tree = NULL;
return 0;
}
return 1;
}
void
grub_util_iterate_devices (int NESTED_FUNC_ATTR (*hook) (const char *, int),
int floppy_disks)
{
int i;
clear_seen_devices ();
/* Floppies. */
for (i = 0; i < floppy_disks; i++)
{
char name[16];
struct stat st;
get_floppy_disk_name (name, i);
if (stat (name, &st) < 0)
break;
/* In floppies, write the map, whether check_device_readable_unique
succeeds or not, because the user just may not insert floppies. */
if (hook (name, 1))
goto out;
}
#ifdef __linux__
{
DIR *dir = opendir ("/dev/disk/by-id");
if (dir)
{
struct dirent *entry;
struct device *devs;
size_t devs_len = 0, devs_max = 1024, i;
devs = xmalloc (devs_max * sizeof (*devs));
/* Dump all the directory entries into names, resizing if
necessary. */
for (entry = readdir (dir); entry; entry = readdir (dir))
{
/* Skip current and parent directory entries. */
if (strcmp (entry->d_name, ".") == 0 ||
strcmp (entry->d_name, "..") == 0)
continue;
/* Skip partition entries. */
if (strstr (entry->d_name, "-part"))
continue;
/* Skip device-mapper entries; we'll handle the ones we want
later. */
if (strncmp (entry->d_name, "dm-", sizeof ("dm-") - 1) == 0)
continue;
/* Skip RAID entries; they are handled by upper layers. */
if (strncmp (entry->d_name, "md-", sizeof ("md-") - 1) == 0)
continue;
if (devs_len >= devs_max)
{
devs_max *= 2;
devs = xrealloc (devs, devs_max * sizeof (*devs));
}
devs[devs_len].stable =
xasprintf ("/dev/disk/by-id/%s", entry->d_name);
devs[devs_len].kernel =
canonicalize_file_name (devs[devs_len].stable);
devs_len++;
}
qsort (devs, devs_len, sizeof (*devs), &compare_devices);
closedir (dir);
/* Now add all the devices in sorted order. */
for (i = 0; i < devs_len; ++i)
{
if (check_device_readable_unique (devs[i].stable))
{
if (hook (devs[i].stable, 0))
goto out;
}
free (devs[i].stable);
free (devs[i].kernel);
}
free (devs);
}
}
if (have_devfs ())
{
i = 0;
while (1)
{
char discn[32];
char name[PATH_MAX];
struct stat st;
/* Linux creates symlinks "/dev/discs/discN" for convenience.
The way to number disks is the same as GRUB's. */
sprintf (discn, "/dev/discs/disc%d", i++);
if (stat (discn, &st) < 0)
break;
if (realpath (discn, name))
{
strcat (name, "/disc");
if (hook (name, 0))
goto out;
}
}
goto out;
}
#endif /* __linux__ */
/* IDE disks. */
for (i = 0; i < 96; i++)
{
char name[16];
get_ide_disk_name (name, i);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
goto out;
}
}
#ifdef __FreeBSD_kernel__
/* IDE disks using ATA Direct Access driver. */
if (get_kfreebsd_version () >= 800000)
for (i = 0; i < 96; i++)
{
char name[16];
get_ada_disk_name (name, i);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
goto out;
}
}
/* ATARAID disks. */
for (i = 0; i < 8; i++)
{
char name[20];
get_ataraid_disk_name (name, i);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
goto out;
}
}
#endif
#ifdef __linux__
/* Virtio disks. */
for (i = 0; i < 26; i++)
{
char name[16];
get_virtio_disk_name (name, i);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
goto out;
}
}
/* ATARAID disks. */
for (i = 0; i < 8; i++)
{
char name[20];
get_ataraid_disk_name (name, i);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
goto out;
}
}
/* Xen virtual block devices. */
for (i = 0; i < 26; i++)
{
char name[16];
get_xvd_disk_name (name, i);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
goto out;
}
}
#endif /* __linux__ */
/* The rest is SCSI disks. */
for (i = 0; i < 48; i++)
{
char name[16];
get_scsi_disk_name (name, i);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
goto out;
}
}
#ifdef __linux__
/* This is for DAC960 - we have
/dev/rd/c<controller>d<logical drive>p<partition>.
DAC960 driver currently supports up to 8 controllers, 32 logical
drives, and 7 partitions. */
{
int controller, drive;
for (controller = 0; controller < 8; controller++)
{
for (drive = 0; drive < 15; drive++)
{
char name[24];
get_dac960_disk_name (name, controller, drive);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
goto out;
}
}
}
}
/* This is for Mylex Acceleraid - we have
/dev/rd/c<controller>d<logical drive>p<partition>. */
{
int controller, drive;
for (controller = 0; controller < 8; controller++)
{
for (drive = 0; drive < 15; drive++)
{
char name[24];
get_acceleraid_disk_name (name, controller, drive);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
goto out;
}
}
}
}
/* This is for CCISS - we have
/dev/cciss/c<controller>d<logical drive>p<partition>. */
{
int controller, drive;
for (controller = 0; controller < 3; controller++)
{
for (drive = 0; drive < 16; drive++)
{
char name[24];
get_cciss_disk_name (name, controller, drive);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
goto out;
}
}
}
}
/* This is for Compaq Intelligent Drive Array - we have
/dev/ida/c<controller>d<logical drive>p<partition>. */
{
int controller, drive;
for (controller = 0; controller < 3; controller++)
{
for (drive = 0; drive < 16; drive++)
{
char name[24];
get_ida_disk_name (name, controller, drive);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
goto out;
}
}
}
}
/* This is for I2O - we have /dev/i2o/hd<logical drive><partition> */
{
char unit;
for (unit = 'a'; unit < 'f'; unit++)
{
char name[24];
get_i2o_disk_name (name, unit);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
goto out;
}
}
}
/* MultiMediaCard (MMC). */
for (i = 0; i < 10; i++)
{
char name[16];
get_mmc_disk_name (name, i);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
goto out;
}
}
# ifdef HAVE_DEVICE_MAPPER
# define dmraid_check(cond, ...) \
if (! (cond)) \
{ \
grub_dprintf ("deviceiter", __VA_ARGS__); \
goto dmraid_end; \
}
/* DM-RAID. */
if (grub_device_mapper_supported ())
{
struct dm_tree *tree = NULL;
struct dm_task *task = NULL;
struct dm_names *names = NULL;
unsigned int next = 0;
void *top_handle, *second_handle;
struct dm_tree_node *root, *top, *second;
/* Build DM tree for all devices. */
tree = dm_tree_create ();
dmraid_check (tree, "dm_tree_create failed\n");
task = dm_task_create (DM_DEVICE_LIST);
dmraid_check (task, "dm_task_create failed\n");
dmraid_check (dm_task_run (task), "dm_task_run failed\n");
names = dm_task_get_names (task);
dmraid_check (names, "dm_task_get_names failed\n");
dmraid_check (names->dev, "No DM devices found\n");
do
{
names = (void *) names + next;
dmraid_check (dm_tree_add_dev (tree, MAJOR (names->dev),
MINOR (names->dev)),
"dm_tree_add_dev (%s) failed\n", names->name);
next = names->next;
}
while (next);
/* Walk the second-level children of the inverted tree; that is, devices
which are directly composed of non-DM devices such as hard disks.
This class includes all DM-RAID disks and excludes all DM-RAID
partitions. */
root = dm_tree_find_node (tree, 0, 0);
top_handle = NULL;
top = dm_tree_next_child (&top_handle, root, 1);
while (top)
{
second_handle = NULL;
second = dm_tree_next_child (&second_handle, top, 1);
while (second)
{
const char *node_name, *node_uuid;
char *name;
node_name = dm_tree_node_get_name (second);
dmraid_check (node_name, "dm_tree_node_get_name failed\n");
node_uuid = dm_tree_node_get_uuid (second);
dmraid_check (node_uuid, "dm_tree_node_get_uuid failed\n");
if (strncmp (node_uuid, "DMRAID-", 7) != 0)
{
grub_dprintf ("deviceiter", "%s is not DM-RAID\n", node_name);
goto dmraid_next_child;
}
name = xasprintf ("/dev/mapper/%s", node_name);
if (check_device_readable_unique (name))
{
if (hook (name, 0))
{
free (name);
if (task)
dm_task_destroy (task);
if (tree)
dm_tree_free (tree);
goto out;
}
}
free (name);
dmraid_next_child:
second = dm_tree_next_child (&second_handle, top, 1);
}
top = dm_tree_next_child (&top_handle, root, 1);
}
dmraid_end:
if (task)
dm_task_destroy (task);
if (tree)
dm_tree_free (tree);
}
# endif /* HAVE_DEVICE_MAPPER */
#endif /* __linux__ */
out:
clear_seen_devices ();
}