Thankfully, no further changes were actually necessary, so here is my
attempt to convert it to two patches
I attached the diffs, but also committed them to
https://github.com/byteit101/grub2/tree/grub-lvmintegrity
Patrick
On Thu, Feb 8, 2024 at 3:06 PM Daniel Kiper <dki...@net-space.pl> wrote:
>
> On Thu, Feb 08, 2024 at 02:52:37PM -0500, Patrick Plenefisch wrote:
> > Hmm, what would the logical parts be? The solution for both cachevol and
> > integrity is the same.
>
> It seems to me at least code refactoring which you are doing could be
> taken out to a separate patch. Maybe something else... Anyway, in general
> smaller patches ease reviewing...
>
> > I do know another part needs to be added as I still need to investigate some
> > warnings, but I'll likely need to do that this weekend when I have some more
> > time.
>
> Cool! Thanks!
>
> Daniel
diff --git a/grub-core/disk/diskfilter.c b/grub-core/disk/diskfilter.c
index 21e239511..dc3bd943b 100644
--- a/grub-core/disk/diskfilter.c
+++ b/grub-core/disk/diskfilter.c
@@ -966,8 +966,6 @@ grub_diskfilter_vg_register (struct grub_diskfilter_vg *vg)
for (lv = vg->lvs; lv; lv = lv->next)
{
- grub_err_t err;
-
/* RAID 1 and single-disk RAID 0 don't use a chunksize but code
assumes one so set one. */
for (i = 0; i < lv->segment_count; i++)
@@ -979,6 +977,10 @@ grub_diskfilter_vg_register (struct grub_diskfilter_vg *vg)
&& lv->segments[i].stripe_size == 0)
lv->segments[i].stripe_size = 64;
}
+ }
+ for (lv = vg->lvs; lv; lv = lv->next)
+ {
+ grub_err_t err;
err = validate_lv(lv);
if (err)
diff --git a/grub-core/disk/lvm.c b/grub-core/disk/lvm.c
index 10bc965a4..7615a507a 100644
--- a/grub-core/disk/lvm.c
+++ b/grub-core/disk/lvm.c
@@ -805,13 +805,27 @@ grub_lvm_detect (grub_disk_t disk,
seg->nodes[seg->node_count - 1].name = tmp;
}
}
+ /* Cache and integrity LVs have extra parts that
+ we can ignore for our read-only access */
else if (grub_memcmp (p, "cache\"",
- sizeof ("cache\"") - 1) == 0)
+ sizeof ("cache\"") - 1) == 0
+ || grub_memcmp (p, "cache+CACHE_USES_CACHEVOL\"",
+ sizeof ("cache+CACHE_USES_CACHEVOL\"") - 1) == 0
+ || grub_memcmp (p, "integrity\"",
+ sizeof ("integrity\"") - 1) == 0)
{
struct ignored_feature_lv *ignored_feature = NULL;
char *p2, *p3;
grub_size_t sz;
+#ifdef GRUB_UTIL
+ p2 = grub_strchr (p, '"');
+ if (p2)
+ *p2 = 0;
+ grub_util_info ("Ignoring extra metadata type '%s' for %s", p, lv->name);
+ if (p2)
+ *p2 ='"';
+#endif
ignored_feature = grub_zalloc (sizeof (*ignored_feature));
if (!ignored_feature)
@@ -936,36 +950,6 @@ 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;
@@ -1014,9 +998,46 @@ grub_lvm_detect (grub_disk_t disk,
ignored_feature->lv = NULL;
}
}
+ else
+ {
+
+#ifdef GRUB_UTIL
+ grub_util_info ("Couldn't find LVM part of ignored feature on %s", ignored_feature->origin);
+#endif
+ }
}
}
+ /* 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;
diff --git a/grub-core/disk/lvm.c b/grub-core/disk/lvm.c
index 794248540..10bc965a4 100644
--- a/grub-core/disk/lvm.c
+++ b/grub-core/disk/lvm.c
@@ -34,12 +34,11 @@
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 +104,29 @@ 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);
}
}
@@ -325,7 +323,7 @@ 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 +808,82 @@ 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;
-
- p2 = grub_strchr (p2, '"');
- if (!p2)
- goto cache_lv_fail;
-
- p3 = ++p2;
- if (p3 == mda_end)
- goto cache_lv_fail;
- p3 = grub_strchr (p3, '"');
- if (!p3)
- goto cache_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';
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);
+ 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 +968,56 @@ 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;
}
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