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-rw-r--r--src/H5B2cache.c69
-rw-r--r--src/H5B2int.c9
-rw-r--r--src/H5B2pkg.h19
3 files changed, 81 insertions, 16 deletions
diff --git a/src/H5B2cache.c b/src/H5B2cache.c
index 1a531ce..ee359aa 100644
--- a/src/H5B2cache.c
+++ b/src/H5B2cache.c
@@ -145,6 +145,8 @@ H5B2_cache_hdr_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *_type, vo
unsigned split_percent, merge_percent; /* Split & merge info for B-tree */
H5B2_t *bt2 = NULL; /* B-tree info */
size_t size; /* Header size */
+ uint32_t stored_chksum; /* Stored metadata checksum value */
+ uint32_t computed_chksum; /* Computed metadata checksum value */
uint8_t *buf = NULL; /* Temporary buffer */
uint8_t *p; /* Pointer into raw data buffer */
H5B2_t *ret_value; /* Return value */
@@ -183,8 +185,6 @@ H5B2_cache_hdr_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *_type, vo
if(*p++ != H5B2_HDR_VERSION)
HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, NULL, "wrong B-tree header version")
-/* XXX: Add metadata flags & checksum to v2 B-tree metadata (like fractal heap) */
-
/* B-tree type */
if(*p++ != (uint8_t)type->id)
HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, NULL, "incorrect B-tree type")
@@ -207,8 +207,20 @@ H5B2_cache_hdr_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *_type, vo
UINT16DECODE(p, bt2->root.node_nrec);
H5F_DECODE_LENGTH(f, p, bt2->root.all_nrec);
- /* Initialize shared B-tree info */
+ /* Metadata checksum */
+ UINT32DECODE(p, stored_chksum);
+
+ /* Sanity check */
HDassert((size_t)(p - buf) == size);
+
+ /* Compute checksum on entire header */
+ computed_chksum = H5_checksum_metadata(buf, (size - H5B2_SIZEOF_CHKSUM));
+
+ /* Verify checksum */
+ if(stored_chksum != computed_chksum)
+ HGOTO_ERROR(H5E_BTREE, H5E_BADVALUE, NULL, "incorrect metadata checksum for v2 B-tree header")
+
+ /* Initialize shared B-tree info */
if(H5B2_shared_init(f, bt2, type, node_size, rrec_size, split_percent, merge_percent) < 0)
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "can't create shared B-tree info")
@@ -255,6 +267,7 @@ H5B2_cache_hdr_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5B
uint8_t *buf; /* Temporary raw data buffer */
uint8_t *p; /* Pointer into raw data buffer */
size_t size; /* Header size on disk */
+ uint32_t metadata_chksum; /* Computed metadata checksum value */
/* Get the pointer to the shared B-tree info */
shared = H5RC_GET_OBJ(bt2->shared);
@@ -297,6 +310,12 @@ H5B2_cache_hdr_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5B
UINT16ENCODE(p, bt2->root.node_nrec);
H5F_ENCODE_LENGTH(f, p, bt2->root.all_nrec);
+ /* Compute metadata checksum */
+ metadata_chksum = H5_checksum_metadata(buf, (size - H5B2_SIZEOF_CHKSUM));
+
+ /* Metadata checksum */
+ UINT32ENCODE(p, metadata_chksum);
+
/* Write the B-tree header. */
HDassert((size_t)(p - buf) == size);
if(H5F_block_write(f, H5FD_MEM_BTREE, addr, size, dxpl_id, buf) < 0)
@@ -444,6 +463,8 @@ H5B2_cache_internal_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *_nre
uint8_t *p; /* Pointer into raw data buffer */
uint8_t *native; /* Pointer to native record info */
H5B2_node_ptr_t *int_node_ptr; /* Pointer to node pointer info */
+ uint32_t stored_chksum; /* Stored metadata checksum value */
+ uint32_t computed_chksum; /* Computed metadata checksum value */
unsigned u; /* Local index variable */
H5B2_internal_t *ret_value; /* Return value */
@@ -481,8 +502,6 @@ H5B2_cache_internal_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *_nre
if(*p++ != H5B2_INT_VERSION)
HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, NULL, "wrong B-tree internal node version")
-/* XXX: Add metadata flags & checksum to v2 B-tree metadata (like fractal heap) */
-
/* B-tree type */
if (*p++ != (uint8_t)shared->type->id)
HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, NULL, "incorrect B-tree type")
@@ -503,7 +522,7 @@ H5B2_cache_internal_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *_nre
for(u = 0; u < internal->nrec; u++) {
/* Decode record */
if((shared->type->decode)(f, p, native) < 0)
- HGOTO_ERROR(H5E_BTREE, H5E_CANTENCODE, NULL, "unable to decode B-tree record")
+ HGOTO_ERROR(H5E_BTREE, H5E_CANTDECODE, NULL, "unable to decode B-tree record")
/* Move to next record */
p += shared->rrec_size;
@@ -522,9 +541,19 @@ H5B2_cache_internal_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *_nre
int_node_ptr++;
} /* end for */
+ /* Compute checksum on internal node */
+ computed_chksum = H5_checksum_metadata(shared->page, (size_t)(p - shared->page));
+
+ /* Metadata checksum */
+ UINT32DECODE(p, stored_chksum);
+
/* Sanity check parsing */
HDassert((size_t)(p - shared->page) <= shared->node_size);
+ /* Verify checksum */
+ if(stored_chksum != computed_chksum)
+ HGOTO_ERROR(H5E_BTREE, H5E_BADVALUE, NULL, "incorrect metadata checksum for v2 internal node")
+
/* Set return value */
ret_value = internal;
@@ -565,6 +594,7 @@ H5B2_cache_internal_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr
uint8_t *p; /* Pointer into raw data buffer */
uint8_t *native; /* Pointer to native record info */
H5B2_node_ptr_t *int_node_ptr; /* Pointer to node pointer info */
+ uint32_t metadata_chksum; /* Computed metadata checksum value */
unsigned u; /* Local index variable */
/* Get the pointer to the shared B-tree info */
@@ -607,6 +637,12 @@ H5B2_cache_internal_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr
int_node_ptr++;
} /* end for */
+ /* Compute metadata checksum */
+ metadata_chksum = H5_checksum_metadata(shared->page, (size_t)(p - shared->page));
+
+ /* Metadata checksum */
+ UINT32ENCODE(p, metadata_chksum);
+
/* Write the B-tree internal node */
HDassert((size_t)(p - shared->page) <= shared->node_size);
if(H5F_block_write(f, H5FD_MEM_BTREE, addr, shared->node_size, dxpl_id, shared->page) < 0)
@@ -771,6 +807,8 @@ H5B2_cache_leaf_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *_nrec, v
H5B2_leaf_t *leaf = NULL; /* Pointer to lead node loaded */
uint8_t *p; /* Pointer into raw data buffer */
uint8_t *native; /* Pointer to native keys */
+ uint32_t stored_chksum; /* Stored metadata checksum value */
+ uint32_t computed_chksum; /* Computed metadata checksum value */
unsigned u; /* Local index variable */
H5B2_leaf_t *ret_value; /* Return value */
@@ -808,8 +846,6 @@ H5B2_cache_leaf_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *_nrec, v
if(*p++ != H5B2_LEAF_VERSION)
HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, NULL, "wrong B-tree leaf node version")
-/* XXX: Add metadata flags & checksum to v2 B-tree metadata (like fractal heap) */
-
/* B-tree type */
if(*p++ != (uint8_t)shared->type->id)
HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, NULL, "incorrect B-tree type")
@@ -833,9 +869,19 @@ H5B2_cache_leaf_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *_nrec, v
native += shared->type->nrec_size;
} /* end for */
+ /* Compute checksum on internal node */
+ computed_chksum = H5_checksum_metadata(shared->page, (size_t)(p - shared->page));
+
+ /* Metadata checksum */
+ UINT32DECODE(p, stored_chksum);
+
/* Sanity check parsing */
HDassert((size_t)(p - shared->page) <= shared->node_size);
+ /* Verify checksum */
+ if(stored_chksum != computed_chksum)
+ HGOTO_ERROR(H5E_BTREE, H5E_BADVALUE, NULL, "incorrect metadata checksum for v2 leaf node")
+
/* Set return value */
ret_value = leaf;
@@ -875,6 +921,7 @@ H5B2_cache_leaf_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5
H5B2_shared_t *shared; /* Shared B-tree information */
uint8_t *p; /* Pointer into raw data buffer */
uint8_t *native; /* Pointer to native keys */
+ uint32_t metadata_chksum; /* Computed metadata checksum value */
unsigned u; /* Local index variable */
/* Get the pointer to the shared B-tree info */
@@ -905,6 +952,12 @@ H5B2_cache_leaf_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5
native += shared->type->nrec_size;
} /* end for */
+ /* Compute metadata checksum */
+ metadata_chksum = H5_checksum_metadata(shared->page, (size_t)(p - shared->page));
+
+ /* Metadata checksum */
+ UINT32ENCODE(p, metadata_chksum);
+
/* Write the B-tree leaf node */
HDassert((size_t)(p - shared->page) <= shared->node_size);
if(H5F_block_write(f, H5FD_MEM_BTREE, addr, shared->node_size, dxpl_id, shared->page) < 0)
diff --git a/src/H5B2int.c b/src/H5B2int.c
index 16e87a6..98e9f3b 100644
--- a/src/H5B2int.c
+++ b/src/H5B2int.c
@@ -41,14 +41,13 @@
/* Local Macros */
/****************/
-/* Format overhead for each node (on disk) */
-#define H5B2_OVERHEAD_SIZE (H5B2_SIZEOF_MAGIC+1) /* Signature + version # */
-
/* Number of records that fit into internal node */
-#define H5B2_NUM_INT_REC(f,n,r) (((n)-(H5B2_OVERHEAD_SIZE+H5B2_NODE_POINTER_SIZE(f)))/((r)+H5B2_NODE_POINTER_SIZE(f)))
+#define H5B2_NUM_INT_REC(f, n, r) \
+ (((n) - (H5B2_METADATA_PREFIX_SIZE + H5B2_NODE_POINTER_SIZE(f))) / ((r) + H5B2_NODE_POINTER_SIZE(f)))
/* Number of records that fit into leaf node */
-#define H5B2_NUM_LEAF_REC(n,r) (((n)-H5B2_OVERHEAD_SIZE)/(r))
+#define H5B2_NUM_LEAF_REC(n, r) \
+ (((n) - H5B2_METADATA_PREFIX_SIZE) / (r))
/* Uncomment this macro to enable extra sanity checking */
/* #define H5B2_DEBUG */
diff --git a/src/H5B2pkg.h b/src/H5B2pkg.h
index 5a27494..1ab7129 100644
--- a/src/H5B2pkg.h
+++ b/src/H5B2pkg.h
@@ -53,17 +53,30 @@
/* Size of a "node pointer" (on disk) */
#define H5B2_NODE_POINTER_SIZE(f) (H5F_SIZEOF_ADDR(f)+H5B2_SIZEOF_RECORDS_PER_NODE+H5F_SIZEOF_SIZE(f))
+/* Size of checksum information (on disk) */
+#define H5B2_SIZEOF_CHKSUM 4
+
+/* Format overhead for all v2 B-tree metadata in the file */
+#define H5B2_METADATA_PREFIX_SIZE ( \
+ H5B2_SIZEOF_MAGIC /* Signature */ \
+ + 1 /* Version */ \
+ + H5B2_SIZEOF_CHKSUM /* Metadata checksum */ \
+ )
+
/* Size of the B-tree header on disk */
#define H5B2_HEADER_SIZE(f) ( \
- 4 /* Signature */ \
- + 1 /* Version */ \
+ /* General metadata fields */ \
+ H5B2_METADATA_PREFIX_SIZE \
+ \
+ /* Header specific fields */ \
+ 1 /* Tree type */ \
+ 4 /* Node size, in bytes */ \
+ 2 /* Key size, in bytes */ \
+ 2 /* Depth of tree */ \
+ 2 /* Split % of full (as integer, ie. "98" means 98%) */ \
+ 2 /* Merge % of full (as integer, ie. "98" means 98%) */ \
- + H5B2_NODE_POINTER_SIZE(f)) /* Node pointer to root node in tree */
+ + H5B2_NODE_POINTER_SIZE(f) /* Node pointer to root node in tree */ \
+ )
/* Macro to retrieve pointer to i'th native record for native record buffer */
#define H5B2_NAT_NREC(b,shared,idx) (b+(shared)->nat_off[(idx)])
generated by cgit v0.12 at 2024-11-24 10:38:38 (GMT)