Much rearranging of cgptlib. Passes all its (new) unit tests.

src/platform/vboot_reference/utility/load_kernel_test.c

+/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* Routines for verifying a file's signature. Useful in testing the core
+ * RSA verification implementation.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "load_kernel_fw.h"
+#include "boot_device.h"
+#include "rollback_index.h"
+#include "utility.h"
+
+/* ANSI Color coding sequences. */
+#define COL_GREEN "\e[1;32m"
+#define COL_RED "\e[0;31m"
+#define COL_STOP "\e[m"
+
+
+#define LBA_BYTES 512
+#define KERNEL_BUFFER_SIZE 0x600000
+
+/* Global variables for stub functions */
+static LoadKernelParams lkp;
+static FILE *image_file = NULL;
+
+
+/* Boot device stub implementations to read from the image file */
+int BootDeviceReadLBA(uint64_t lba_start, uint64_t lba_count, void *buffer) {
+  printf("Read(%ld, %ld)\n", lba_start, lba_count);
+
+  if (lba_start > lkp.ending_lba ||
+      lba_start + lba_count - 1 > lkp.ending_lba) {
+    fprintf(stderr, "Read overrun: %ld + %ld > %ld\n",
+            lba_start, lba_count, lkp.ending_lba);
+    return 1;
+  }
+
+  fseek(image_file, lba_start * lkp.bytes_per_lba, SEEK_SET);
+  if (1 != fread(buffer, lba_count * lkp.bytes_per_lba, 1, image_file)) {
+    fprintf(stderr, "Read error.");
+    return 1;
+  }
+  return 0;
+}
+
+
+int BootDeviceWriteLBA(uint64_t lba_start, uint64_t lba_count,
+                       const void *buffer) {
+  printf("Write(%ld, %ld)\n", lba_start, lba_count);
+
+  if (lba_start > lkp.ending_lba ||
+      lba_start + lba_count - 1 > lkp.ending_lba) {
+    fprintf(stderr, "Read overrun: %ld + %ld > %ld\n",
+            lba_start, lba_count, lkp.ending_lba);
+    return 1;
+  }
+
+  /* TODO: enable writes, once we're sure it won't trash our example file */
+  return 0;
+
+  fseek(image_file, lba_start * lkp.bytes_per_lba, SEEK_SET);
+  if (1 != fwrite(buffer, lba_count * lkp.bytes_per_lba, 1, image_file)) {
+    fprintf(stderr, "Read error.");
+    return 1;
+  }
+  return 0;
+}
+
+
+/* Main routine */
+int main(int argc, char* argv[]) {
+
+  const char *image_name;
+  int rv;
+
+  Memset(&lkp, 0, sizeof(LoadKernelParams));
+  lkp.bytes_per_lba = LBA_BYTES;
+
+  /* Read command line parameters */
+  if (2 > argc) {
+    fprintf(stderr, "usage: %s <drive_image>\n", argv[0]);
+    return 1;
+  }
+  image_name = argv[1];
+  printf("Reading from image: %s\n", image_name);
+
+  /* TODO: Read header signing key blob */
+  lkp.header_sign_key_blob = NULL;
+
+  /* Get image size */
+  image_file = fopen(image_name, "rb");
+  if (!image_file) {
+    fprintf(stderr, "Unable to open image file %s\n", image_name);
+    return 1;
+  }
+  fseek(image_file, 0, SEEK_END);
+  lkp.ending_lba = (ftell(image_file) / LBA_BYTES) - 1;
+  rewind(image_file);
+  printf("Ending LBA: %ld\n", lkp.ending_lba);
+
+  /* Allocate a buffer for the kernel */
+  lkp.kernel_buffer = Malloc(KERNEL_BUFFER_SIZE);
+  if(!lkp.kernel_buffer) {
+    fprintf(stderr, "Unable to allocate kernel buffer.\n");
+    return 1;
+  }
+
+  /* TODO: Option for boot mode */
+  lkp.boot_mode = BOOT_MODE_NORMAL;
+
+  /* Call LoadKernel() */
+  rv = LoadKernel(&lkp);
+  printf("LoadKernel() returned %d\n", rv);
+
+  fclose(image_file);
+  Free(lkp.kernel_buffer);
+  return 0;
+}