1 files changed, 48 insertions, 0 deletions
diff --git a/tools/libxc/xc_dom_decompress_unsafe.c b/tools/libxc/xc_dom_decompress_unsafe.c
new file mode 100644
index 0000000000..164e35558f
--- /dev/null
+++ b/tools/libxc/xc_dom_decompress_unsafe.c
@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+
+#include "xg_private.h"
+#include "xc_dom_decompress_unsafe.h"
+
+static struct xc_dom_image *unsafe_dom;
+static unsigned char *output_blob;
+static unsigned int output_size;
+
+static void unsafe_error(const char *msg)
+{
+    xc_dom_panic(unsafe_dom->xch, XC_INVALID_KERNEL, "%s", msg);
+}
+
+static int unsafe_flush(void *src, unsigned int size)
+{
+    void *n = realloc(output_blob, output_size + size);
+    if (!n)
+        return -1;
+    output_blob = n;
+
+    memcpy(&output_blob[output_size], src, size);
+    output_size += size;
+    return size;
+}
+
+int xc_dom_decompress_unsafe(
+    decompress_fn fn, struct xc_dom_image *dom, void **blob, size_t *size)
+{
+    int ret;
+
+    unsafe_dom = dom;
+    output_blob = NULL;
+    output_size = 0;
+
+    ret = fn(dom->kernel_blob, dom->kernel_size, NULL, unsafe_flush, NULL, NULL, unsafe_error);
+
+    if (ret)
+        free(output_blob);
+    else {
+        *blob = output_blob;
+        *size = output_size;
+    }
+
+    return ret;
+}