Changeset 0ce0103 in mainline for uspace/app/bithenge/blob.c

Timestamp:

2012-08-06T04:15:33Z (13 years ago)

Author:

Sean Bartell <wingedtachikoma@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

f9c314a5

Parents:

c3437d9

Message:

Bithenge: implement bitfields

File:

• uspace/app/bithenge/blob.c (modified) (3 diffs)

uspace/app/bithenge/blob.c

@@ -55 +55 @@
         assert(ops);
         assert(ops->destroy);
-        assert(ops->read);
+        assert(ops->read || ops->read_bits);
         assert(ops->size);
 
@@ -339 +339 @@
 }
 
+static int subblob_read_bits(bithenge_blob_t *base, aoff64_t offset,
+    char *buffer, aoff64_t *size, bool little_endian)
+{
+        subblob_t *blob = blob_as_subblob(base);
+        if (blob->size_matters) {
+                if (offset > blob->size)
+                        return EINVAL;
+                *size = min(*size, blob->size - offset);
+        }
+        offset += blob->offset;
+        return bithenge_blob_read_bits(blob->source, offset, buffer, size,
+            little_endian);
+}
+
 static void subblob_destroy(bithenge_blob_t *base)
 {
@@ -349 +363 @@
         .size = subblob_size,
         .read = subblob_read,
+        .read_bits = subblob_read_bits,
         .destroy = subblob_destroy,
 };