merge devmapper into lazy
This commit is contained in:
commit
c0c837c10b
3 changed files with 155 additions and 34 deletions
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@ -34,6 +34,10 @@
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#include <stdint.h>
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#include <stdint.h>
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#include <grub/util/misc.h>
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#include <grub/util/misc.h>
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#ifdef HAVE_DEVICE_MAPPER
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# include <libdevmapper.h>
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#endif
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#ifdef __GNU__
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#ifdef __GNU__
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#include <hurd.h>
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#include <hurd.h>
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#include <hurd/lookup.h>
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#include <hurd/lookup.h>
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@ -637,32 +641,65 @@ grub_guess_root_device (const char *dir)
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}
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}
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static int
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static int
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grub_util_is_dmraid (const char *os_dev)
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grub_util_is_lvm (const char *os_dev)
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{
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{
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if (! strncmp (os_dev, "/dev/mapper/nvidia_", 19))
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if ((strncmp ("/dev/mapper/", os_dev, 12) != 0))
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return 1;
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return 0;
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else if (! strncmp (os_dev, "/dev/mapper/isw_", 16))
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return 1;
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#ifdef HAVE_DEVICE_MAPPER
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else if (! strncmp (os_dev, "/dev/mapper/hpt37x_", 19))
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{
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return 1;
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struct dm_tree *tree;
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else if (! strncmp (os_dev, "/dev/mapper/hpt45x_", 19))
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uint32_t maj, min;
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return 1;
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struct dm_tree_node *node = NULL;
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else if (! strncmp (os_dev, "/dev/mapper/via_", 16))
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const char *node_uuid;
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return 1;
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struct stat st;
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else if (! strncmp (os_dev, "/dev/mapper/lsi_", 16))
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return 1;
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else if (! strncmp (os_dev, "/dev/mapper/pdc_", 16))
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return 1;
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else if (! strncmp (os_dev, "/dev/mapper/jmicron_", 20))
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return 1;
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else if (! strncmp (os_dev, "/dev/mapper/asr_", 16))
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return 1;
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else if (! strncmp (os_dev, "/dev/mapper/sil_", 16))
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return 1;
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else if (! strncmp (os_dev, "/dev/mapper/ddf1_", 17))
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return 1;
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return 0;
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if (stat (os_dev, &st) < 0)
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return 0;
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tree = dm_tree_create ();
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if (! tree)
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{
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grub_printf ("Failed to create tree\n");
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grub_dprintf ("hostdisk", "dm_tree_create failed\n");
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return 0;
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}
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maj = major (st.st_rdev);
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min = minor (st.st_rdev);
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if (! dm_tree_add_dev (tree, maj, min))
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{
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grub_dprintf ("hostdisk", "dm_tree_add_dev failed\n");
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dm_tree_free (tree);
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return 0;
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}
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node = dm_tree_find_node (tree, maj, min);
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if (! node)
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{
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grub_dprintf ("hostdisk", "dm_tree_find_node failed\n");
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dm_tree_free (tree);
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return 0;
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}
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node_uuid = dm_tree_node_get_uuid (node);
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if (! node_uuid)
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{
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grub_dprintf ("hostdisk", "%s has no DM uuid\n", os_dev);
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dm_tree_free (tree);
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return 0;
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}
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if (strncmp (node_uuid, "LVM-", 4) != 0)
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{
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dm_tree_free (tree);
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return 0;
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}
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dm_tree_free (tree);
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return 1;
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}
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#else
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return 1;
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#endif /* HAVE_DEVICE_MAPPER */
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}
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}
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int
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int
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@ -674,13 +711,11 @@ grub_util_get_dev_abstraction (const char *os_dev __attribute__((unused)))
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return GRUB_DEV_ABSTRACTION_NONE;
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return GRUB_DEV_ABSTRACTION_NONE;
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/* Check for LVM. */
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/* Check for LVM. */
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if (!strncmp (os_dev, "/dev/mapper/", 12)
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if (grub_util_is_lvm (os_dev))
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&& ! grub_util_is_dmraid (os_dev)
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&& strncmp (os_dev, "/dev/mapper/mpath", 17) != 0)
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return GRUB_DEV_ABSTRACTION_LVM;
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return GRUB_DEV_ABSTRACTION_LVM;
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/* Check for RAID. */
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/* Check for RAID. */
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if (!strncmp (os_dev, "/dev/md", 7))
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if (!strncmp (os_dev, "/dev/md", 7) && ! grub_util_device_is_mapped (os_dev))
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return GRUB_DEV_ABSTRACTION_RAID;
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return GRUB_DEV_ABSTRACTION_RAID;
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#endif
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#endif
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@ -24,6 +24,7 @@
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#include <grub/err.h>
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#include <grub/err.h>
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#include <grub/emu/misc.h>
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#include <grub/emu/misc.h>
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#include <grub/emu/hostdisk.h>
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#include <grub/emu/hostdisk.h>
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#include <grub/emu/getroot.h>
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#include <grub/misc.h>
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#include <grub/misc.h>
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#include <grub/i18n.h>
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#include <grub/i18n.h>
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#include <grub/list.h>
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#include <grub/list.h>
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@ -333,18 +334,23 @@ grub_util_biosdisk_open (const char *name, grub_disk_t disk,
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return GRUB_ERR_NONE;
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return GRUB_ERR_NONE;
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}
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}
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#ifdef HAVE_DEVICE_MAPPER
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int
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static int
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grub_util_device_is_mapped (const char *dev)
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device_is_mapped (const char *dev)
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{
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{
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#ifdef HAVE_DEVICE_MAPPER
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struct stat st;
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struct stat st;
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if (!grub_device_mapper_supported ())
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return 0;
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if (stat (dev, &st) < 0)
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if (stat (dev, &st) < 0)
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return 0;
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return 0;
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return dm_is_dm_major (major (st.st_rdev));
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return dm_is_dm_major (major (st.st_rdev));
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}
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#else
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return 0;
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#endif /* HAVE_DEVICE_MAPPER */
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#endif /* HAVE_DEVICE_MAPPER */
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}
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#if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
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#if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
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/* FIXME: geom actually gives us the whole container hierarchy.
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/* FIXME: geom actually gives us the whole container hierarchy.
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@ -420,7 +426,7 @@ find_partition_start (const char *dev)
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# endif /* !defined(HAVE_DIOCGDINFO) */
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# endif /* !defined(HAVE_DIOCGDINFO) */
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# ifdef HAVE_DEVICE_MAPPER
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# ifdef HAVE_DEVICE_MAPPER
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if (grub_device_mapper_supported () && device_is_mapped (dev)) {
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if (grub_util_device_is_mapped (dev)) {
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struct dm_task *task = NULL;
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struct dm_task *task = NULL;
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grub_uint64_t start, length;
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grub_uint64_t start, length;
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char *target_type, *params, *space;
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char *target_type, *params, *space;
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@ -1149,6 +1155,54 @@ make_device_name (int drive, int dos_part, int bsd_part)
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return ret;
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return ret;
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}
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}
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#ifdef HAVE_DEVICE_MAPPER
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static int
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grub_util_get_dm_node_linear_info (const char *dev,
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int *maj, int *min)
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{
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struct dm_task *dmt;
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void *next = NULL;
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uint64_t length, start;
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char *target, *params;
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char *ptr;
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int major, minor;
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dmt = dm_task_create(DM_DEVICE_TABLE);
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if (!dmt)
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return 0;
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if (!dm_task_set_name(dmt, dev))
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return 0;
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dm_task_no_open_count(dmt);
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if (!dm_task_run(dmt))
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return 0;
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next = dm_get_next_target(dmt, next, &start, &length,
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&target, ¶ms);
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if (grub_strcmp (target, "linear") != 0)
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return 0;
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major = grub_strtoul (params, &ptr, 10);
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if (grub_errno)
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{
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grub_errno = GRUB_ERR_NONE;
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return 0;
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}
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if (*ptr != ':')
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return 0;
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ptr++;
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minor = grub_strtoul (ptr, 0, 10);
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if (grub_errno)
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{
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grub_errno = GRUB_ERR_NONE;
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return 0;
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}
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if (maj)
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*maj = major;
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if (min)
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*min = minor;
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return 1;
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}
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#endif
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static char *
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static char *
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convert_system_partition_to_system_disk (const char *os_dev, struct stat *st)
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convert_system_partition_to_system_disk (const char *os_dev, struct stat *st)
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{
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{
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@ -1325,9 +1379,39 @@ convert_system_partition_to_system_disk (const char *os_dev, struct stat *st)
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node = NULL;
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node = NULL;
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goto devmapper_out;
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goto devmapper_out;
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}
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}
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else if (strncmp (node_uuid, "DMRAID-", 7) != 0)
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if (strncmp (node_uuid, "LVM-", 4) == 0)
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{
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{
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grub_dprintf ("hostdisk", "%s is an LVM\n", path);
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node = NULL;
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goto devmapper_out;
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}
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if (strncmp (node_uuid, "mpath-", 6) == 0)
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{
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/* Multipath partitions have partN-mpath-* UUIDs, and are
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linear mappings so are handled by
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grub_util_get_dm_node_linear_info. Multipath disks are not
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linear mappings and must be handled specially. */
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grub_dprintf ("hostdisk", "%s is a multipath disk\n", path);
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mapper_name = dm_tree_node_get_name (node);
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goto devmapper_out;
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}
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if (strncmp (node_uuid, "DMRAID-", 7) != 0)
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{
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int major, minor;
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const char *node_name;
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grub_dprintf ("hostdisk", "%s is not DM-RAID\n", path);
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grub_dprintf ("hostdisk", "%s is not DM-RAID\n", path);
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if ((node_name = dm_tree_node_get_name (node))
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&& grub_util_get_dm_node_linear_info (node_name,
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&major, &minor))
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{
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if (tree)
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dm_tree_free (tree);
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free (path);
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char *ret = grub_find_device (NULL, (major << 8) | minor);
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return ret;
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}
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node = NULL;
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node = NULL;
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goto devmapper_out;
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goto devmapper_out;
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}
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}
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@ -54,6 +54,8 @@ void grub_find_zpool_from_dir (const char *dir,
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char *grub_make_system_path_relative_to_its_root (const char *path)
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char *grub_make_system_path_relative_to_its_root (const char *path)
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__attribute__ ((warn_unused_result));
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__attribute__ ((warn_unused_result));
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int
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grub_util_device_is_mapped (const char *dev);
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void * EXPORT_FUNC(xmalloc) (grub_size_t size) __attribute__ ((warn_unused_result));
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void * EXPORT_FUNC(xmalloc) (grub_size_t size) __attribute__ ((warn_unused_result));
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void * EXPORT_FUNC(xrealloc) (void *ptr, grub_size_t size) __attribute__ ((warn_unused_result));
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void * EXPORT_FUNC(xrealloc) (void *ptr, grub_size_t size) __attribute__ ((warn_unused_result));
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