[PATCH 4/6 v12] lvm: Add support for integrity lv

[Patrick Plenefisch]

lv matching must be done after processing the ignored feature
indirections, as integrity volumes & caches may have several levels
of indirection that the segments must be shifted through.

Signed-off-by: Patrick Plenefisch <simonpatp@gmail.com>
---
 grub-core/disk/lvm.c | 70 ++++++++++++++++++++++++--------------------
 1 file changed, 38 insertions(+), 32 deletions(-)

diff --git a/grub-core/disk/lvm.c b/grub-core/disk/lvm.c
index 286132d74..9c9386751 100644
--- a/grub-core/disk/lvm.c
+++ b/grub-core/disk/lvm.c
@@ -805,8 +805,14 @@ grub_lvm_detect (grub_disk_t disk,
               seg->nodes[seg->node_count - 1].name = tmp;
             }
             }
-          else if (grub_memcmp (p, "cache\"",
-                   sizeof ("cache\"") - 1) == 0)
+          /*
+           * Cache and integrity LVs have extra parts that
+           * we can ignore for our read-only access
+           */
+          else if (grub_strncmp (p, "cache\"",
+                   sizeof ("cache\"") - 1) == 0
+                   || grub_strncmp (p, "integrity\"",
+                   sizeof ("integrity\"") - 1) == 0)
             {
               struct ignored_feature_lv *ignored_feature = NULL;

@@ -936,36 +942,6 @@ grub_lvm_detect (grub_disk_t disk,
         }
     }

-      /* Match lvs.  */
-      {
-    struct grub_diskfilter_lv *lv1;
-    struct grub_diskfilter_lv *lv2;
-    for (lv1 = vg->lvs; lv1; lv1 = lv1->next)
-      for (i = 0; i < lv1->segment_count; i++)
-        for (j = 0; j < lv1->segments[i].node_count; j++)
-          {
-        if (vg->pvs)
-          for (pv = vg->pvs; pv; pv = pv->next)
-            {
-              if (! grub_strcmp (pv->name,
-                     lv1->segments[i].nodes[j].name))
-            {
-              lv1->segments[i].nodes[j].pv = pv;
-              break;
-            }
-            }
-        if (lv1->segments[i].nodes[j].pv == NULL)
-          for (lv2 = vg->lvs; lv2; lv2 = lv2->next)
-            {
-              if (lv1 == lv2)
-                continue;
-              if (grub_strcmp (lv2->name,
-                       lv1->segments[i].nodes[j].name) == 0)
-            lv1->segments[i].nodes[j].lv = lv2;
-            }
-          }
-
-      }

       {
     struct ignored_feature_lv *ignored_feature;
@@ -1017,6 +993,36 @@ grub_lvm_detect (grub_disk_t disk,
       }
       }

+      /* Match lvs. Must be done after cache and integrity are found  */
+      {
+    struct grub_diskfilter_lv *lv1;
+    struct grub_diskfilter_lv *lv2;
+    for (lv1 = vg->lvs; lv1; lv1 = lv1->next)
+      for (i = 0; i < lv1->segment_count; i++)
+        for (j = 0; j < lv1->segments[i].node_count; j++)
+          {
+        if (vg->pvs)
+          for (pv = vg->pvs; pv; pv = pv->next)
+            {
+              if (! grub_strcmp (pv->name,
+                     lv1->segments[i].nodes[j].name))
+            {
+              lv1->segments[i].nodes[j].pv = pv;
+              break;
+            }
+            }
+        if (lv1->segments[i].nodes[j].pv == NULL)
+          for (lv2 = vg->lvs; lv2; lv2 = lv2->next)
+            {
+              if (lv1 == lv2)
+                continue;
+              if (grub_strcmp (lv2->name,
+                       lv1->segments[i].nodes[j].name) == 0)
+            lv1->segments[i].nodes[j].lv = lv2;
+            }
+          }
+      }
+
       grub_lvm_free_ignored_feature_lvs (ignored_feature_lvs);
       if (grub_diskfilter_vg_register (vg))
     goto fail4;
-- 
2.39.5

0004-lvm-Add-support-for-integrity-lv.patch
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