enum grub_dev_abstraction_types
grub_util_get_dev_abstraction_os (const char *os_dev)
{
#ifndef HAVE_DEVICE_MAPPER
if ((strncmp ("/dev/mapper/", os_dev, 12) == 0))
return GRUB_DEV_ABSTRACTION_LVM;
#endif
/* Check for RAID. */
if (!strncmp (os_dev, "/dev/md", 7) && ! grub_util_device_is_mapped (os_dev)
&& !grub_util_is_imsm (os_dev))
return GRUB_DEV_ABSTRACTION_RAID;
return GRUB_DEV_ABSTRACTION_NONE;
}
static int
grub_hostdisk_linux_find_partition (char *dev, grub_disk_addr_t sector)
{
size_t len = strlen (dev);
const char *format;
char *p;
int i;
char real_dev[PATH_MAX];
struct linux_partition_cache *cache;
int missing = 0;
strcpy(real_dev, dev);
if (have_devfs () && strcmp (real_dev + len - 5, "/disc") == 0)
{
p = real_dev + len - 4;
format = "part%d";
}
else if (strncmp (real_dev, "/dev/disk/by-id/",
sizeof ("/dev/disk/by-id/") - 1) == 0)
{
p = real_dev + len;
format = "-part%d";
}
else if (real_dev[len - 1] >= '0' && real_dev[len - 1] <= '9')
{
p = real_dev + len;
format = "p%d";
}
else
{
p = real_dev + len;
format = "%d";
}
for (cache = linux_partition_cache_list; cache; cache = cache->next)
{
if (strcmp (cache->dev, dev) == 0 && cache->start == sector)
{
sprintf (p, format, cache->partno);
strcpy (dev, real_dev);
return 1;
}
}
for (i = 1; i < 10000; i++)
{
grub_util_fd_t fd;
grub_disk_addr_t start;
sprintf (p, format, i);
fd = open (real_dev, O_RDONLY);
if (fd == -1)
{
if (missing++ < 10)
continue;
else
return 0;
}
missing = 0;
close (fd);
if (!grub_util_device_is_mapped (real_dev)
|| !grub_util_get_dm_node_linear_info (real_dev, 0, 0, &start))
start = grub_util_find_partition_start_os (real_dev);
/* We don't care about errors here. */
grub_errno = GRUB_ERR_NONE;
if (start == sector)
{
struct linux_partition_cache *new_cache_item;
new_cache_item = xmalloc (sizeof *new_cache_item);
new_cache_item->dev = xstrdup (dev);
new_cache_item->start = start;
new_cache_item->partno = i;
grub_list_push (GRUB_AS_LIST_P (&linux_partition_cache_list),
GRUB_AS_LIST (new_cache_item));
strcpy (dev, real_dev);
return 1;
}
}
return 0;
}
