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[PATCH 1/6 v12] disk/lvm: Make cache_lv more generic as ignored_feature_


From: Patrick Plenefisch
Subject: [PATCH 1/6 v12] disk/lvm: Make cache_lv more generic as ignored_feature_lv
Date: Sat, 7 Dec 2024 21:35:58 -0500

This patch isn't necessary by itself, but when combined with the next two patchs it enhances readability as ignored_features_lv is then used for multiple types of extra LV's, not just cache LV's

Signed-off-by: Patrick Plenefisch <simonpatp@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
 grub-core/disk/lvm.c | 176 +++++++++++++++++++++----------------------
 1 file changed, 88 insertions(+), 88 deletions(-)

diff --git a/grub-core/disk/lvm.c b/grub-core/disk/lvm.c
index 0c32c95f9..36023279f 100644
--- a/grub-core/disk/lvm.c
+++ b/grub-core/disk/lvm.c
@@ -34,12 +34,12 @@
 
 GRUB_MOD_LICENSE ("GPLv3+");
 
-struct cache_lv
+struct ignored_feature_lv
 {
   struct grub_diskfilter_lv *lv;
   char *cache_pool;
   char *origin;
-  struct cache_lv *next;
+  struct ignored_feature_lv *next;
 };
 
 
@@ -105,30 +105,30 @@ grub_lvm_check_flag (const char *p, const char *str, const char *flag)
 }
 
 static void
-grub_lvm_free_cache_lvs (struct cache_lv *cache_lvs)
+grub_lvm_free_ignored_feature_lvs (struct ignored_feature_lv *ignored_feature_lvs)
 {
-  struct cache_lv *cache;
+  struct ignored_feature_lv *ignored_feature;
 
-  while ((cache = cache_lvs))
+  while ((ignored_feature = ignored_feature_lvs))
     {
-      cache_lvs = cache_lvs->next;
+      ignored_feature_lvs = ignored_feature_lvs->next;
 
-      if (cache->lv)
+      if (ignored_feature->lv)
  {
   unsigned int i;
 
-  for (i = 0; i < cache->lv->segment_count; ++i)
-    if (cache->lv->segments)
-      grub_free (cache->lv->segments[i].nodes);
-  grub_free (cache->lv->segments);
-  grub_free (cache->lv->fullname);
-  grub_free (cache->lv->idname);
-  grub_free (cache->lv->name);
+  for (i = 0; i < ignored_feature->lv->segment_count; ++i)
+    if (ignored_feature->lv->segments)
+      grub_free (ignored_feature->lv->segments[i].nodes);
+  grub_free (ignored_feature->lv->segments);
+  grub_free (ignored_feature->lv->fullname);
+  grub_free (ignored_feature->lv->idname);
+  grub_free (ignored_feature->lv->name);
  }
-      grub_free (cache->lv);
-      grub_free (cache->origin);
-      grub_free (cache->cache_pool);
-      grub_free (cache);
+      grub_free (ignored_feature->lv);
+      grub_free (ignored_feature->origin);
+      grub_free (ignored_feature->cache_pool);
+      grub_free (ignored_feature);
     }
 }
 
@@ -325,7 +325,7 @@ grub_lvm_detect (grub_disk_t disk,
 
   if (! vg)
     {
-      struct cache_lv *cache_lvs = NULL;
+      struct ignored_feature_lv *ignored_feature_lvs = NULL;
 
       /* First time we see this volume group. We've to create the
  whole volume group structure. */
@@ -810,105 +810,105 @@ grub_lvm_detect (grub_disk_t disk,
   else if (grub_memcmp (p, "cache\"",
    sizeof ("cache\"") - 1) == 0)
     {
-      struct cache_lv *cache = NULL;
+      struct ignored_feature_lv *ignored_feature = NULL;
 
       char *p2, *p3;
       grub_size_t sz;
 
-      cache = grub_zalloc (sizeof (*cache));
-      if (!cache)
- goto cache_lv_fail;
-      cache->lv = grub_zalloc (sizeof (*cache->lv));
-      if (!cache->lv)
- goto cache_lv_fail;
-      grub_memcpy (cache->lv, lv, sizeof (*cache->lv));
+      ignored_feature = grub_zalloc (sizeof (*ignored_feature));
+      if (!ignored_feature)
+ goto ignored_feature_lv_fail;
+      ignored_feature->lv = grub_zalloc (sizeof (*ignored_feature->lv));
+      if (!ignored_feature->lv)
+ goto ignored_feature_lv_fail;
+      grub_memcpy (ignored_feature->lv, lv, sizeof (*ignored_feature->lv));
 
       if (lv->fullname)
  {
-  cache->lv->fullname = grub_strdup (lv->fullname);
-  if (!cache->lv->fullname)
-    goto cache_lv_fail;
+  ignored_feature->lv->fullname = grub_strdup (lv->fullname);
+  if (!ignored_feature->lv->fullname)
+    goto ignored_feature_lv_fail;
  }
       if (lv->idname)
  {
-  cache->lv->idname = grub_strdup (lv->idname);
-  if (!cache->lv->idname)
-    goto cache_lv_fail;
+  ignored_feature->lv->idname = grub_strdup (lv->idname);
+  if (!ignored_feature->lv->idname)
+    goto ignored_feature_lv_fail;
  }
       if (lv->name)
  {
-  cache->lv->name = grub_strdup (lv->name);
-  if (!cache->lv->name)
-    goto cache_lv_fail;
+  ignored_feature->lv->name = grub_strdup (lv->name);
+  if (!ignored_feature->lv->name)
+    goto ignored_feature_lv_fail;
  }
 
       skip_lv = 1;
 
       p2 = grub_strstr (p, "cache_pool = \"");
       if (!p2)
- goto cache_lv_fail;
+ goto ignored_feature_lv_fail;
 
       p2 = grub_strchr (p2, '"');
       if (!p2)
- goto cache_lv_fail;
+ goto ignored_feature_lv_fail;
 
       p3 = ++p2;
       if (p3 == mda_end)
- goto cache_lv_fail;
+ goto ignored_feature_lv_fail;
       p3 = grub_strchr (p3, '"');
       if (!p3)
- goto cache_lv_fail;
+ goto ignored_feature_lv_fail;
 
       sz = p3 - p2;
 
-      cache->cache_pool = grub_malloc (sz + 1);
-      if (!cache->cache_pool)
- goto cache_lv_fail;
-      grub_memcpy (cache->cache_pool, p2, sz);
-      cache->cache_pool[sz] = '\0';
+      ignored_feature->cache_pool = grub_malloc (sz + 1);
+      if (!ignored_feature->cache_pool)
+ goto ignored_feature_lv_fail;
+      grub_memcpy (ignored_feature->cache_pool, p2, sz);
+      ignored_feature->cache_pool[sz] = '\0';
 
       p2 = grub_strstr (p, "origin = \"");
       if (!p2)
- goto cache_lv_fail;
+ goto ignored_feature_lv_fail;
 
       p2 = grub_strchr (p2, '"');
       if (!p2)
- goto cache_lv_fail;
+ goto ignored_feature_lv_fail;
 
       p3 = ++p2;
       if (p3 == mda_end)
- goto cache_lv_fail;
+ goto ignored_feature_lv_fail;
       p3 = grub_strchr (p3, '"');
       if (!p3)
- goto cache_lv_fail;
+ goto ignored_feature_lv_fail;
 
       sz = p3 - p2;
 
-      cache->origin = grub_malloc (sz + 1);
-      if (!cache->origin)
- goto cache_lv_fail;
-      grub_memcpy (cache->origin, p2, sz);
-      cache->origin[sz] = '\0';
+      ignored_feature->origin = grub_malloc (sz + 1);
+      if (!ignored_feature->origin)
+ goto ignored_feature_lv_fail;
+      grub_memcpy (ignored_feature->origin, p2, sz);
+      ignored_feature->origin[sz] = '\0';
 
-      cache->next = cache_lvs;
-      cache_lvs = cache;
+      ignored_feature->next = ignored_feature_lvs;
+      ignored_feature_lvs = ignored_feature;
       break;
 
-    cache_lv_fail:
-      if (cache)
+    ignored_feature_lv_fail:
+      if (ignored_feature)
  {
-  grub_free (cache->origin);
-  grub_free (cache->cache_pool);
-  if (cache->lv)
+  grub_free (ignored_feature->origin);
+  grub_free (ignored_feature->cache_pool);
+  if (ignored_feature->lv)
     {
-      grub_free (cache->lv->fullname);
-      grub_free (cache->lv->idname);
-      grub_free (cache->lv->name);
+      grub_free (ignored_feature->lv->fullname);
+      grub_free (ignored_feature->lv->idname);
+      grub_free (ignored_feature->lv->name);
     }
-  grub_free (cache->lv);
-  grub_free (cache);
+  grub_free (ignored_feature->lv);
+  grub_free (ignored_feature);
  }
-      grub_lvm_free_cache_lvs (cache_lvs);
+      grub_lvm_free_ignored_feature_lvs (ignored_feature_lvs);
       goto fail4;
     }
   else
@@ -993,56 +993,56 @@ grub_lvm_detect (grub_disk_t disk,
       }
 
       {
- struct cache_lv *cache;
+ struct ignored_feature_lv *ignored_feature;
 
- for (cache = cache_lvs; cache; cache = cache->next)
+ for (ignored_feature = ignored_feature_lvs; ignored_feature; ignored_feature = ignored_feature->next)
   {
     struct grub_diskfilter_lv *lv;
 
     for (lv = vg->lvs; lv; lv = lv->next)
-      if (grub_strcmp (lv->name, cache->origin) == 0)
+      if (grub_strcmp (lv->name, ignored_feature->origin) == 0)
  break;
     if (lv)
       {
- cache->lv->segments = grub_calloc (lv->segment_count, sizeof (*lv->segments));
- if (!cache->lv->segments)
+ ignored_feature->lv->segments = grub_calloc (lv->segment_count, sizeof (*lv->segments));
+ if (!ignored_feature->lv->segments)
   {
-    grub_lvm_free_cache_lvs (cache_lvs);
+    grub_lvm_free_ignored_feature_lvs (ignored_feature_lvs);
     goto fail4;
   }
- grub_memcpy (cache->lv->segments, lv->segments, lv->segment_count * sizeof (*lv->segments));
+ grub_memcpy (ignored_feature->lv->segments, lv->segments, lv->segment_count * sizeof (*lv->segments));
 
  for (i = 0; i < lv->segment_count; ++i)
   {
     struct grub_diskfilter_node *nodes = lv->segments[i].nodes;
     grub_size_t node_count = lv->segments[i].node_count;
 
-    cache->lv->segments[i].nodes = grub_calloc (node_count, sizeof (*nodes));
-    if (!cache->lv->segments[i].nodes)
+    ignored_feature->lv->segments[i].nodes = grub_calloc (node_count, sizeof (*nodes));
+    if (!ignored_feature->lv->segments[i].nodes)
       {
  for (j = 0; j < i; ++j)
-  grub_free (cache->lv->segments[j].nodes);
- grub_free (cache->lv->segments);
- cache->lv->segments = NULL;
- grub_lvm_free_cache_lvs (cache_lvs);
+  grub_free (ignored_feature->lv->segments[j].nodes);
+ grub_free (ignored_feature->lv->segments);
+ ignored_feature->lv->segments = NULL;
+ grub_lvm_free_ignored_feature_lvs (ignored_feature_lvs);
  goto fail4;
       }
-    grub_memcpy (cache->lv->segments[i].nodes, nodes, node_count * sizeof (*nodes));
+    grub_memcpy (ignored_feature->lv->segments[i].nodes, nodes, node_count * sizeof (*nodes));
   }
 
- if (cache->lv->segments)
+ if (ignored_feature->lv->segments)
   {
-    cache->lv->segment_count = lv->segment_count;
-    cache->lv->vg = vg;
-    cache->lv->next = vg->lvs;
-    vg->lvs = cache->lv;
-    cache->lv = NULL;
+    ignored_feature->lv->segment_count = lv->segment_count;
+    ignored_feature->lv->vg = vg;
+    ignored_feature->lv->next = vg->lvs;
+    vg->lvs = ignored_feature->lv;
+    ignored_feature->lv = NULL;
   }
       }
   }
       }
 
-      grub_lvm_free_cache_lvs (cache_lvs);
+  grub_lvm_free_ignored_feature_lvs (ignored_feature_lvs);
       if (grub_diskfilter_vg_register (vg))
  goto fail4;
     }
--
2.39.5


Attachment: 0001-disk-lvm-Make-cache_lv-more-generic-as-ignored_featu.patch
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