diff --git a/tools/applypatch/Android.mk b/tools/applypatch/Android.mk
deleted file mode 100644
index d20d6c8..0000000
--- a/tools/applypatch/Android.mk
+++ /dev/null
@@ -1,59 +0,0 @@
-# Copyright (C) 2008 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-ifneq ($(TARGET_SIMULATOR),true)
-
-LOCAL_PATH := $(call my-dir)
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := applypatch.c bspatch.c freecache.c imgpatch.c utils.c
-LOCAL_MODULE := libapplypatch
-LOCAL_MODULE_TAGS := eng
-LOCAL_C_INCLUDES += external/bzip2 external/zlib bootable/recovery
-LOCAL_STATIC_LIBRARIES += libmtdutils libmincrypt libbz libz
-
-include $(BUILD_STATIC_LIBRARY)
-
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := main.c
-LOCAL_MODULE := applypatch
-LOCAL_STATIC_LIBRARIES += libapplypatch libmtdutils libmincrypt libbz
-LOCAL_SHARED_LIBRARIES += libz libcutils libstdc++ libc
-
-include $(BUILD_EXECUTABLE)
-
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := main.c
-LOCAL_MODULE := applypatch_static
-LOCAL_FORCE_STATIC_EXECUTABLE := true
-LOCAL_MODULE_TAGS := eng
-LOCAL_STATIC_LIBRARIES += libapplypatch libmtdutils libmincrypt libbz
-LOCAL_STATIC_LIBRARIES += libz libcutils libstdc++ libc
-
-include $(BUILD_EXECUTABLE)
-
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := imgdiff.c utils.c bsdiff.c
-LOCAL_MODULE := imgdiff
-LOCAL_FORCE_STATIC_EXECUTABLE := true
-LOCAL_MODULE_TAGS := eng
-LOCAL_C_INCLUDES += external/zlib external/bzip2
-LOCAL_STATIC_LIBRARIES += libz libbz
-
-include $(BUILD_HOST_EXECUTABLE)
-
-endif  # !TARGET_SIMULATOR
diff --git a/tools/applypatch/applypatch.c b/tools/applypatch/applypatch.c
deleted file mode 100644
index 9b0c915..0000000
--- a/tools/applypatch/applypatch.c
+++ /dev/null
@@ -1,895 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <libgen.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/statfs.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-#include "mincrypt/sha.h"
-#include "applypatch.h"
-#include "mtdutils/mtdutils.h"
-
-int SaveFileContents(const char* filename, FileContents file);
-int LoadMTDContents(const char* filename, FileContents* file);
-int ParseSha1(const char* str, uint8_t* digest);
-size_t FileSink(unsigned char* data, size_t len, void* token);
-
-static int mtd_partitions_scanned = 0;
-
-// Read a file into memory; store it and its associated metadata in
-// *file.  Return 0 on success.
-int LoadFileContents(const char* filename, FileContents* file) {
-  file->data = NULL;
-
-  // A special 'filename' beginning with "MTD:" means to load the
-  // contents of an MTD partition.
-  if (strncmp(filename, "MTD:", 4) == 0) {
-    return LoadMTDContents(filename, file);
-  }
-
-  if (stat(filename, &file->st) != 0) {
-    printf("failed to stat \"%s\": %s\n", filename, strerror(errno));
-    return -1;
-  }
-
-  file->size = file->st.st_size;
-  file->data = malloc(file->size);
-
-  FILE* f = fopen(filename, "rb");
-  if (f == NULL) {
-    printf("failed to open \"%s\": %s\n", filename, strerror(errno));
-    free(file->data);
-    file->data = NULL;
-    return -1;
-  }
-
-  size_t bytes_read = fread(file->data, 1, file->size, f);
-  if (bytes_read != file->size) {
-    printf("short read of \"%s\" (%d bytes of %d)\n",
-            filename, bytes_read, file->size);
-    free(file->data);
-    file->data = NULL;
-    return -1;
-  }
-  fclose(f);
-
-  SHA(file->data, file->size, file->sha1);
-  return 0;
-}
-
-static size_t* size_array;
-// comparison function for qsort()ing an int array of indexes into
-// size_array[].
-static int compare_size_indices(const void* a, const void* b) {
-  int aa = *(int*)a;
-  int bb = *(int*)b;
-  if (size_array[aa] < size_array[bb]) {
-    return -1;
-  } else if (size_array[aa] > size_array[bb]) {
-    return 1;
-  } else {
-    return 0;
-  }
-}
-
-// Load the contents of an MTD partition into the provided
-// FileContents.  filename should be a string of the form
-// "MTD:<partition_name>:<size_1>:<sha1_1>:<size_2>:<sha1_2>:...".
-// The smallest size_n bytes for which that prefix of the mtd contents
-// has the corresponding sha1 hash will be loaded.  It is acceptable
-// for a size value to be repeated with different sha1s.  Will return
-// 0 on success.
-//
-// This complexity is needed because if an OTA installation is
-// interrupted, the partition might contain either the source or the
-// target data, which might be of different lengths.  We need to know
-// the length in order to read from MTD (there is no "end-of-file"
-// marker), so the caller must specify the possible lengths and the
-// hash of the data, and we'll do the load expecting to find one of
-// those hashes.
-int LoadMTDContents(const char* filename, FileContents* file) {
-  char* copy = strdup(filename);
-  const char* magic = strtok(copy, ":");
-  if (strcmp(magic, "MTD") != 0) {
-    printf("LoadMTDContents called with bad filename (%s)\n",
-            filename);
-    return -1;
-  }
-  const char* partition = strtok(NULL, ":");
-
-  int i;
-  int colons = 0;
-  for (i = 0; filename[i] != '\0'; ++i) {
-    if (filename[i] == ':') {
-      ++colons;
-    }
-  }
-  if (colons < 3 || colons%2 == 0) {
-    printf("LoadMTDContents called with bad filename (%s)\n",
-            filename);
-  }
-
-  int pairs = (colons-1)/2;     // # of (size,sha1) pairs in filename
-  int* index = malloc(pairs * sizeof(int));
-  size_t* size = malloc(pairs * sizeof(size_t));
-  char** sha1sum = malloc(pairs * sizeof(char*));
-
-  for (i = 0; i < pairs; ++i) {
-    const char* size_str = strtok(NULL, ":");
-    size[i] = strtol(size_str, NULL, 10);
-    if (size[i] == 0) {
-      printf("LoadMTDContents called with bad size (%s)\n", filename);
-      return -1;
-    }
-    sha1sum[i] = strtok(NULL, ":");
-    index[i] = i;
-  }
-
-  // sort the index[] array so it indexes the pairs in order of
-  // increasing size.
-  size_array = size;
-  qsort(index, pairs, sizeof(int), compare_size_indices);
-
-  if (!mtd_partitions_scanned) {
-    mtd_scan_partitions();
-    mtd_partitions_scanned = 1;
-  }
-
-  const MtdPartition* mtd = mtd_find_partition_by_name(partition);
-  if (mtd == NULL) {
-    printf("mtd partition \"%s\" not found (loading %s)\n",
-            partition, filename);
-    return -1;
-  }
-
-  MtdReadContext* ctx = mtd_read_partition(mtd);
-  if (ctx == NULL) {
-    printf("failed to initialize read of mtd partition \"%s\"\n",
-            partition);
-    return -1;
-  }
-
-  SHA_CTX sha_ctx;
-  SHA_init(&sha_ctx);
-  uint8_t parsed_sha[SHA_DIGEST_SIZE];
-
-  // allocate enough memory to hold the largest size.
-  file->data = malloc(size[index[pairs-1]]);
-  char* p = (char*)file->data;
-  file->size = 0;                // # bytes read so far
-
-  for (i = 0; i < pairs; ++i) {
-    // Read enough additional bytes to get us up to the next size
-    // (again, we're trying the possibilities in order of increasing
-    // size).
-    size_t next = size[index[i]] - file->size;
-    size_t read = 0;
-    if (next > 0) {
-      read = mtd_read_data(ctx, p, next);
-      if (next != read) {
-        printf("short read (%d bytes of %d) for partition \"%s\"\n",
-                read, next, partition);
-        free(file->data);
-        file->data = NULL;
-        return -1;
-      }
-      SHA_update(&sha_ctx, p, read);
-      file->size += read;
-    }
-
-    // Duplicate the SHA context and finalize the duplicate so we can
-    // check it against this pair's expected hash.
-    SHA_CTX temp_ctx;
-    memcpy(&temp_ctx, &sha_ctx, sizeof(SHA_CTX));
-    const uint8_t* sha_so_far = SHA_final(&temp_ctx);
-
-    if (ParseSha1(sha1sum[index[i]], parsed_sha) != 0) {
-      printf("failed to parse sha1 %s in %s\n",
-              sha1sum[index[i]], filename);
-      free(file->data);
-      file->data = NULL;
-      return -1;
-    }
-
-    if (memcmp(sha_so_far, parsed_sha, SHA_DIGEST_SIZE) == 0) {
-      // we have a match.  stop reading the partition; we'll return
-      // the data we've read so far.
-      printf("mtd read matched size %d sha %s\n",
-             size[index[i]], sha1sum[index[i]]);
-      break;
-    }
-
-    p += read;
-  }
-
-  mtd_read_close(ctx);
-
-  if (i == pairs) {
-    // Ran off the end of the list of (size,sha1) pairs without
-    // finding a match.
-    printf("contents of MTD partition \"%s\" didn't match %s\n",
-            partition, filename);
-    free(file->data);
-    file->data = NULL;
-    return -1;
-  }
-
-  const uint8_t* sha_final = SHA_final(&sha_ctx);
-  for (i = 0; i < SHA_DIGEST_SIZE; ++i) {
-    file->sha1[i] = sha_final[i];
-  }
-
-  // Fake some stat() info.
-  file->st.st_mode = 0644;
-  file->st.st_uid = 0;
-  file->st.st_gid = 0;
-
-  free(copy);
-  free(index);
-  free(size);
-  free(sha1sum);
-
-  return 0;
-}
-
-
-// Save the contents of the given FileContents object under the given
-// filename.  Return 0 on success.
-int SaveFileContents(const char* filename, FileContents file) {
-  int fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC);
-  if (fd < 0) {
-    printf("failed to open \"%s\" for write: %s\n",
-            filename, strerror(errno));
-    return -1;
-  }
-
-  size_t bytes_written = FileSink(file.data, file.size, &fd);
-  if (bytes_written != file.size) {
-    printf("short write of \"%s\" (%d bytes of %d) (%s)\n",
-           filename, bytes_written, file.size, strerror(errno));
-    close(fd);
-    return -1;
-  }
-  fsync(fd);
-  close(fd);
-
-  if (chmod(filename, file.st.st_mode) != 0) {
-    printf("chmod of \"%s\" failed: %s\n", filename, strerror(errno));
-    return -1;
-  }
-  if (chown(filename, file.st.st_uid, file.st.st_gid) != 0) {
-    printf("chown of \"%s\" failed: %s\n", filename, strerror(errno));
-    return -1;
-  }
-
-  return 0;
-}
-
-// Write a memory buffer to target_mtd partition, a string of the form
-// "MTD:<partition>[:...]".  Return 0 on success.
-int WriteToMTDPartition(unsigned char* data, size_t len,
-                        const char* target_mtd) {
-  char* partition = strchr(target_mtd, ':');
-  if (partition == NULL) {
-    printf("bad MTD target name \"%s\"\n", target_mtd);
-    return -1;
-  }
-  ++partition;
-  // Trim off anything after a colon, eg "MTD:boot:blah:blah:blah...".
-  // We want just the partition name "boot".
-  partition = strdup(partition);
-  char* end = strchr(partition, ':');
-  if (end != NULL)
-    *end = '\0';
-
-  if (!mtd_partitions_scanned) {
-    mtd_scan_partitions();
-    mtd_partitions_scanned = 1;
-  }
-
-  const MtdPartition* mtd = mtd_find_partition_by_name(partition);
-  if (mtd == NULL) {
-    printf("mtd partition \"%s\" not found for writing\n", partition);
-    return -1;
-  }
-
-  MtdWriteContext* ctx = mtd_write_partition(mtd);
-  if (ctx == NULL) {
-    printf("failed to init mtd partition \"%s\" for writing\n",
-            partition);
-    return -1;
-  }
-
-  size_t written = mtd_write_data(ctx, (char*)data, len);
-  if (written != len) {
-    printf("only wrote %d of %d bytes to MTD %s\n",
-            written, len, partition);
-    mtd_write_close(ctx);
-    return -1;
-  }
-
-  if (mtd_erase_blocks(ctx, -1) < 0) {
-    printf("error finishing mtd write of %s\n", partition);
-    mtd_write_close(ctx);
-    return -1;
-  }
-
-  if (mtd_write_close(ctx)) {
-    printf("error closing mtd write of %s\n", partition);
-    return -1;
-  }
-
-  free(partition);
-  return 0;
-}
-
-
-// Take a string 'str' of 40 hex digits and parse it into the 20
-// byte array 'digest'.  'str' may contain only the digest or be of
-// the form "<digest>:<anything>".  Return 0 on success, -1 on any
-// error.
-int ParseSha1(const char* str, uint8_t* digest) {
-  int i;
-  const char* ps = str;
-  uint8_t* pd = digest;
-  for (i = 0; i < SHA_DIGEST_SIZE * 2; ++i, ++ps) {
-    int digit;
-    if (*ps >= '0' && *ps <= '9') {
-      digit = *ps - '0';
-    } else if (*ps >= 'a' && *ps <= 'f') {
-      digit = *ps - 'a' + 10;
-    } else if (*ps >= 'A' && *ps <= 'F') {
-      digit = *ps - 'A' + 10;
-    } else {
-      return -1;
-    }
-    if (i % 2 == 0) {
-      *pd = digit << 4;
-    } else {
-      *pd |= digit;
-      ++pd;
-    }
-  }
-  if (*ps != '\0' && *ps != ':') return -1;
-  return 0;
-}
-
-// Parse arguments (which should be of the form "<sha1>" or
-// "<sha1>:<filename>" into the array *patches, returning the number
-// of Patch objects in *num_patches.  Return 0 on success.
-int ParseShaArgs(int argc, char** argv, Patch** patches, int* num_patches) {
-  *num_patches = argc;
-  *patches = malloc(*num_patches * sizeof(Patch));
-
-  int i;
-  for (i = 0; i < *num_patches; ++i) {
-    if (ParseSha1(argv[i], (*patches)[i].sha1) != 0) {
-      printf("failed to parse sha1 \"%s\"\n", argv[i]);
-      return -1;
-    }
-    if (argv[i][SHA_DIGEST_SIZE*2] == '\0') {
-      (*patches)[i].patch_filename = NULL;
-    } else if (argv[i][SHA_DIGEST_SIZE*2] == ':') {
-      (*patches)[i].patch_filename = argv[i] + (SHA_DIGEST_SIZE*2+1);
-    } else {
-      printf("failed to parse filename \"%s\"\n", argv[i]);
-      return -1;
-    }
-  }
-
-  return 0;
-}
-
-// Search an array of Patch objects for one matching the given sha1.
-// Return the Patch object on success, or NULL if no match is found.
-const Patch* FindMatchingPatch(uint8_t* sha1, Patch* patches, int num_patches) {
-  int i;
-  for (i = 0; i < num_patches; ++i) {
-    if (memcmp(patches[i].sha1, sha1, SHA_DIGEST_SIZE) == 0) {
-      return patches+i;
-    }
-  }
-  return NULL;
-}
-
-// Returns 0 if the contents of the file (argv[2]) or the cached file
-// match any of the sha1's on the command line (argv[3:]).  Returns
-// nonzero otherwise.
-int CheckMode(int argc, char** argv) {
-  if (argc < 3) {
-    printf("no filename given\n");
-    return 2;
-  }
-
-  int num_patches;
-  Patch* patches;
-  if (ParseShaArgs(argc-3, argv+3, &patches, &num_patches) != 0) { return 1; }
-
-  FileContents file;
-  file.data = NULL;
-
-  // It's okay to specify no sha1s; the check will pass if the
-  // LoadFileContents is successful.  (Useful for reading MTD
-  // partitions, where the filename encodes the sha1s; no need to
-  // check them twice.)
-  if (LoadFileContents(argv[2], &file) != 0 ||
-      (num_patches > 0 &&
-       FindMatchingPatch(file.sha1, patches, num_patches) == NULL)) {
-    printf("file \"%s\" doesn't have any of expected "
-            "sha1 sums; checking cache\n", argv[2]);
-
-    free(file.data);
-
-    // If the source file is missing or corrupted, it might be because
-    // we were killed in the middle of patching it.  A copy of it
-    // should have been made in CACHE_TEMP_SOURCE.  If that file
-    // exists and matches the sha1 we're looking for, the check still
-    // passes.
-
-    if (LoadFileContents(CACHE_TEMP_SOURCE, &file) != 0) {
-      printf("failed to load cache file\n");
-      return 1;
-    }
-
-    if (FindMatchingPatch(file.sha1, patches, num_patches) == NULL) {
-      printf("cache bits don't match any sha1 for \"%s\"\n",
-              argv[2]);
-      return 1;
-    }
-  }
-
-  free(file.data);
-  return 0;
-}
-
-int ShowLicenses() {
-  ShowBSDiffLicense();
-  return 0;
-}
-
-size_t FileSink(unsigned char* data, size_t len, void* token) {
-  int fd = *(int *)token;
-  ssize_t done = 0;
-  ssize_t wrote;
-  while (done < (ssize_t) len) {
-    wrote = write(fd, data+done, len-done);
-    if (wrote <= 0) {
-      printf("error writing %d bytes: %s\n", (int)(len-done), strerror(errno));
-      return done;
-    }
-    done += wrote;
-  }
-  printf("wrote %d bytes to output\n", (int)done);
-  return done;
-}
-
-typedef struct {
-  unsigned char* buffer;
-  size_t size;
-  size_t pos;
-} MemorySinkInfo;
-
-size_t MemorySink(unsigned char* data, size_t len, void* token) {
-  MemorySinkInfo* msi = (MemorySinkInfo*)token;
-  if (msi->size - msi->pos < len) {
-    return -1;
-  }
-  memcpy(msi->buffer + msi->pos, data, len);
-  msi->pos += len;
-  return len;
-}
-
-// Return the amount of free space (in bytes) on the filesystem
-// containing filename.  filename must exist.  Return -1 on error.
-size_t FreeSpaceForFile(const char* filename) {
-  struct statfs sf;
-  if (statfs(filename, &sf) != 0) {
-    printf("failed to statfs %s: %s\n", filename, strerror(errno));
-    return -1;
-  }
-  return sf.f_bsize * sf.f_bfree;
-}
-
-// This program applies binary patches to files in a way that is safe
-// (the original file is not touched until we have the desired
-// replacement for it) and idempotent (it's okay to run this program
-// multiple times).
-//
-// - if the sha1 hash of <tgt-file> is <tgt-sha1>, does nothing and exits
-//   successfully.
-//
-// - otherwise, if the sha1 hash of <src-file> is <src-sha1>, applies the
-//   bsdiff <patch> to <src-file> to produce a new file (the type of patch
-//   is automatically detected from the file header).  If that new
-//   file has sha1 hash <tgt-sha1>, moves it to replace <tgt-file>, and
-//   exits successfully.  Note that if <src-file> and <tgt-file> are
-//   not the same, <src-file> is NOT deleted on success.  <tgt-file>
-//   may be the string "-" to mean "the same as src-file".
-//
-// - otherwise, or if any error is encountered, exits with non-zero
-//   status.
-//
-// <src-file> (or <file> in check mode) may refer to an MTD partition
-// to read the source data.  See the comments for the
-// LoadMTDContents() function above for the format of such a filename.
-//
-//
-// As you might guess from the arguments, this function used to be
-// main(); it was split out this way so applypatch could be built as a
-// static library and linked into other executables as well.  In the
-// future only the library form will exist; we will not need to build
-// this as a standalone executable.
-//
-// The arguments to this function are just the command-line of the
-// standalone executable:
-//
-// <src-file> <tgt-file> <tgt-sha1> <tgt-size> [<src-sha1>:<patch> ...]
-//    to apply a patch.  Returns 0 on success, 1 on failure.
-//
-// "-c" <file> [<sha1> ...]
-//    to check a file's contents against zero or more sha1s.  Returns
-//    0 if it matches any of them, 1 if it doesn't.
-//
-// "-s" <bytes>
-//    returns 0 if enough free space is available on /cache; 1 if it
-//    does not.
-//
-// "-l"
-//    shows open-source license information and returns 0.
-//
-// This function returns 2 if the arguments are not understood (in the
-// standalone executable, this causes the usage message to be
-// printed).
-//
-// TODO: make the interface more sensible for use as a library.
-
-int applypatch(int argc, char** argv) {
-  if (argc < 2) {
-    return 2;
-  }
-
-  if (strncmp(argv[1], "-l", 3) == 0) {
-    return ShowLicenses();
-  }
-
-  if (strncmp(argv[1], "-c", 3) == 0) {
-    return CheckMode(argc, argv);
-  }
-
-  if (strncmp(argv[1], "-s", 3) == 0) {
-    if (argc != 3) {
-      return 2;
-    }
-    size_t bytes = strtol(argv[2], NULL, 10);
-    if (MakeFreeSpaceOnCache(bytes) < 0) {
-      printf("unable to make %ld bytes available on /cache\n", (long)bytes);
-      return 1;
-    } else {
-      return 0;
-    }
-  }
-
-  uint8_t target_sha1[SHA_DIGEST_SIZE];
-
-  const char* source_filename = argv[1];
-  const char* target_filename = argv[2];
-  if (target_filename[0] == '-' &&
-      target_filename[1] == '\0') {
-    target_filename = source_filename;
-  }
-
-  printf("\napplying patch to %s\n", source_filename);
-
-  if (ParseSha1(argv[3], target_sha1) != 0) {
-    printf("failed to parse tgt-sha1 \"%s\"\n", argv[3]);
-    return 1;
-  }
-
-  unsigned long target_size = strtoul(argv[4], NULL, 0);
-
-  int num_patches;
-  Patch* patches;
-  if (ParseShaArgs(argc-5, argv+5, &patches, &num_patches) < 0) { return 1; }
-
-  FileContents copy_file;
-  FileContents source_file;
-  const char* source_patch_filename = NULL;
-  const char* copy_patch_filename = NULL;
-  int made_copy = 0;
-
-  // We try to load the target file into the source_file object.
-  if (LoadFileContents(target_filename, &source_file) == 0) {
-    if (memcmp(source_file.sha1, target_sha1, SHA_DIGEST_SIZE) == 0) {
-      // The early-exit case:  the patch was already applied, this file
-      // has the desired hash, nothing for us to do.
-      printf("\"%s\" is already target; no patch needed\n",
-              target_filename);
-      return 0;
-    }
-  }
-
-  if (source_file.data == NULL ||
-      (target_filename != source_filename &&
-       strcmp(target_filename, source_filename) != 0)) {
-    // Need to load the source file:  either we failed to load the
-    // target file, or we did but it's different from the source file.
-    free(source_file.data);
-    LoadFileContents(source_filename, &source_file);
-  }
-
-  if (source_file.data != NULL) {
-    const Patch* to_use =
-        FindMatchingPatch(source_file.sha1, patches, num_patches);
-    if (to_use != NULL) {
-      source_patch_filename = to_use->patch_filename;
-    }
-  }
-
-  if (source_patch_filename == NULL) {
-    free(source_file.data);
-    printf("source file is bad; trying copy\n");
-
-    if (LoadFileContents(CACHE_TEMP_SOURCE, &copy_file) < 0) {
-      // fail.
-      printf("failed to read copy file\n");
-      return 1;
-    }
-
-    const Patch* to_use =
-        FindMatchingPatch(copy_file.sha1, patches, num_patches);
-    if (to_use != NULL) {
-      copy_patch_filename = to_use->patch_filename;
-    }
-
-    if (copy_patch_filename == NULL) {
-      // fail.
-      printf("copy file doesn't match source SHA-1s either\n");
-      return 1;
-    }
-  }
-
-  int retry = 1;
-  SHA_CTX ctx;
-  int output;
-  MemorySinkInfo msi;
-  FileContents* source_to_use;
-  char* outname;
-
-  // assume that target_filename (eg "/system/app/Foo.apk") is located
-  // on the same filesystem as its top-level directory ("/system").
-  // We need something that exists for calling statfs().
-  char target_fs[strlen(target_filename)+1];
-  char* slash = strchr(target_filename+1, '/');
-  if (slash != NULL) {
-    int count = slash - target_filename;
-    strncpy(target_fs, target_filename, count);
-    target_fs[count] = '\0';
-  } else {
-    strcpy(target_fs, target_filename);
-  }
-
-  do {
-    // Is there enough room in the target filesystem to hold the patched
-    // file?
-
-    if (strncmp(target_filename, "MTD:", 4) == 0) {
-      // If the target is an MTD partition, we're actually going to
-      // write the output to /tmp and then copy it to the partition.
-      // statfs() always returns 0 blocks free for /tmp, so instead
-      // we'll just assume that /tmp has enough space to hold the file.
-
-      // We still write the original source to cache, in case the MTD
-      // write is interrupted.
-      if (MakeFreeSpaceOnCache(source_file.size) < 0) {
-        printf("not enough free space on /cache\n");
-        return 1;
-      }
-      if (SaveFileContents(CACHE_TEMP_SOURCE, source_file) < 0) {
-        printf("failed to back up source file\n");
-        return 1;
-      }
-      made_copy = 1;
-      retry = 0;
-    } else {
-      int enough_space = 0;
-      if (retry > 0) {
-        size_t free_space = FreeSpaceForFile(target_fs);
-        int enough_space =
-          (free_space > (target_size * 3 / 2));  // 50% margin of error
-        printf("target %ld bytes; free space %ld bytes; retry %d; enough %d\n",
-               (long)target_size, (long)free_space, retry, enough_space);
-      }
-
-      if (!enough_space) {
-        retry = 0;
-      }
-
-      if (!enough_space && source_patch_filename != NULL) {
-        // Using the original source, but not enough free space.  First
-        // copy the source file to cache, then delete it from the original
-        // location.
-
-        if (strncmp(source_filename, "MTD:", 4) == 0) {
-          // It's impossible to free space on the target filesystem by
-          // deleting the source if the source is an MTD partition.  If
-          // we're ever in a state where we need to do this, fail.
-          printf("not enough free space for target but source is MTD\n");
-          return 1;
-        }
-
-        if (MakeFreeSpaceOnCache(source_file.size) < 0) {
-          printf("not enough free space on /cache\n");
-          return 1;
-        }
-
-        if (SaveFileContents(CACHE_TEMP_SOURCE, source_file) < 0) {
-          printf("failed to back up source file\n");
-          return 1;
-        }
-        made_copy = 1;
-        unlink(source_filename);
-
-        size_t free_space = FreeSpaceForFile(target_fs);
-        printf("(now %ld bytes free for target)\n", (long)free_space);
-      }
-    }
-
-    const char* patch_filename;
-    if (source_patch_filename != NULL) {
-      source_to_use = &source_file;
-      patch_filename = source_patch_filename;
-    } else {
-      source_to_use = &copy_file;
-      patch_filename = copy_patch_filename;
-    }
-
-    SinkFn sink = NULL;
-    void* token = NULL;
-    output = -1;
-    outname = NULL;
-    if (strncmp(target_filename, "MTD:", 4) == 0) {
-      // We store the decoded output in memory.
-      msi.buffer = malloc(target_size);
-      if (msi.buffer == NULL) {
-        printf("failed to alloc %ld bytes for output\n",
-               (long)target_size);
-        return 1;
-      }
-      msi.pos = 0;
-      msi.size = target_size;
-      sink = MemorySink;
-      token = &msi;
-    } else {
-      // We write the decoded output to "<tgt-file>.patch".
-      outname = (char*)malloc(strlen(target_filename) + 10);
-      strcpy(outname, target_filename);
-      strcat(outname, ".patch");
-
-      output = open(outname, O_WRONLY | O_CREAT | O_TRUNC);
-      if (output < 0) {
-        printf("failed to open output file %s: %s\n",
-               outname, strerror(errno));
-        return 1;
-      }
-      sink = FileSink;
-      token = &output;
-    }
-
-#define MAX_HEADER_LENGTH 8
-    unsigned char header[MAX_HEADER_LENGTH];
-    FILE* patchf = fopen(patch_filename, "rb");
-    if (patchf == NULL) {
-      printf("failed to open patch file %s: %s\n",
-             patch_filename, strerror(errno));
-      return 1;
-    }
-    int header_bytes_read = fread(header, 1, MAX_HEADER_LENGTH, patchf);
-    fclose(patchf);
-
-    SHA_init(&ctx);
-
-    int result;
-
-    if (header_bytes_read >= 4 &&
-        header[0] == 0xd6 && header[1] == 0xc3 &&
-        header[2] == 0xc4 && header[3] == 0) {
-      // xdelta3 patches begin "VCD" (with the high bits set) followed
-      // by a zero byte (the version number).
-      printf("error:  xdelta3 patches no longer supported\n");
-      return 1;
-    } else if (header_bytes_read >= 8 &&
-               memcmp(header, "BSDIFF40", 8) == 0) {
-      result = ApplyBSDiffPatch(source_to_use->data, source_to_use->size,
-                                    patch_filename, 0, sink, token, &ctx);
-    } else if (header_bytes_read >= 8 &&
-               memcmp(header, "IMGDIFF", 7) == 0 &&
-               (header[7] == '1' || header[7] == '2')) {
-      result = ApplyImagePatch(source_to_use->data, source_to_use->size,
-                                   patch_filename, sink, token, &ctx);
-    } else {
-      printf("Unknown patch file format\n");
-      return 1;
-    }
-
-    if (output >= 0) {
-      fsync(output);
-      close(output);
-    }
-
-    if (result != 0) {
-      if (retry == 0) {
-        printf("applying patch failed\n");
-        return result != 0;
-      } else {
-        printf("applying patch failed; retrying\n");
-      }
-      if (outname != NULL) {
-        unlink(outname);
-      }
-    } else {
-      // succeeded; no need to retry
-      break;
-    }
-  } while (retry-- > 0);
-
-  const uint8_t* current_target_sha1 = SHA_final(&ctx);
-  if (memcmp(current_target_sha1, target_sha1, SHA_DIGEST_SIZE) != 0) {
-    printf("patch did not produce expected sha1\n");
-    return 1;
-  }
-
-  if (output < 0) {
-    // Copy the temp file to the MTD partition.
-    if (WriteToMTDPartition(msi.buffer, msi.pos, target_filename) != 0) {
-      printf("write of patched data to %s failed\n", target_filename);
-      return 1;
-    }
-    free(msi.buffer);
-  } else {
-    // Give the .patch file the same owner, group, and mode of the
-    // original source file.
-    if (chmod(outname, source_to_use->st.st_mode) != 0) {
-      printf("chmod of \"%s\" failed: %s\n", outname, strerror(errno));
-      return 1;
-    }
-    if (chown(outname, source_to_use->st.st_uid,
-              source_to_use->st.st_gid) != 0) {
-      printf("chown of \"%s\" failed: %s\n", outname, strerror(errno));
-      return 1;
-    }
-
-    // Finally, rename the .patch file to replace the target file.
-    if (rename(outname, target_filename) != 0) {
-      printf("rename of .patch to \"%s\" failed: %s\n",
-              target_filename, strerror(errno));
-      return 1;
-    }
-  }
-
-  // If this run of applypatch created the copy, and we're here, we
-  // can delete it.
-  if (made_copy) unlink(CACHE_TEMP_SOURCE);
-
-  // Success!
-  return 0;
-}
diff --git a/tools/applypatch/applypatch.h b/tools/applypatch/applypatch.h
deleted file mode 100644
index 3701087..0000000
--- a/tools/applypatch/applypatch.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef _APPLYPATCH_H
-#define _APPLYPATCH_H
-
-#include <sys/stat.h>
-#include "mincrypt/sha.h"
-
-typedef struct _Patch {
-  uint8_t sha1[SHA_DIGEST_SIZE];
-  const char* patch_filename;
-} Patch;
-
-typedef struct _FileContents {
-  uint8_t sha1[SHA_DIGEST_SIZE];
-  unsigned char* data;
-  size_t size;
-  struct stat st;
-} FileContents;
-
-// When there isn't enough room on the target filesystem to hold the
-// patched version of the file, we copy the original here and delete
-// it to free up space.  If the expected source file doesn't exist, or
-// is corrupted, we look to see if this file contains the bits we want
-// and use it as the source instead.
-#define CACHE_TEMP_SOURCE "/cache/saved.file"
-
-typedef size_t (*SinkFn)(unsigned char*, size_t, void*);
-
-// applypatch.c
-size_t FreeSpaceForFile(const char* filename);
-int applypatch(int argc, char** argv);
-
-// bsdiff.c
-void ShowBSDiffLicense();
-int ApplyBSDiffPatch(const unsigned char* old_data, ssize_t old_size,
-                     const char* patch_filename, ssize_t offset,
-                     SinkFn sink, void* token, SHA_CTX* ctx);
-int ApplyBSDiffPatchMem(const unsigned char* old_data, ssize_t old_size,
-                        const char* patch_filename, ssize_t patch_offset,
-                        unsigned char** new_data, ssize_t* new_size);
-
-// imgpatch.c
-int ApplyImagePatch(const unsigned char* old_data, ssize_t old_size,
-                    const char* patch_filename,
-                    SinkFn sink, void* token, SHA_CTX* ctx);
-
-// freecache.c
-int MakeFreeSpaceOnCache(size_t bytes_needed);
-
-#endif
diff --git a/tools/applypatch/applypatch.sh b/tools/applypatch/applypatch.sh
deleted file mode 100755
index 88f3025..0000000
--- a/tools/applypatch/applypatch.sh
+++ /dev/null
@@ -1,345 +0,0 @@
-#!/bin/bash
-#
-# A test suite for applypatch.  Run in a client where you have done
-# envsetup, choosecombo, etc.
-#
-# DO NOT RUN THIS ON A DEVICE YOU CARE ABOUT.  It will mess up your
-# system partition.
-#
-#
-# TODO: find some way to get this run regularly along with the rest of
-# the tests.
-
-EMULATOR_PORT=5580
-DATA_DIR=$ANDROID_BUILD_TOP/build/tools/applypatch/testdata
-
-# This must be the filename that applypatch uses for its copies.
-CACHE_TEMP_SOURCE=/cache/saved.file
-
-# Put all binaries and files here.  We use /cache because it's a
-# temporary filesystem in the emulator; it's created fresh each time
-# the emulator starts.
-WORK_DIR=/system
-
-# partition that WORK_DIR is located on, without the leading slash
-WORK_FS=system
-
-# set to 0 to use a device instead
-USE_EMULATOR=1
-
-# ------------------------
-
-tmpdir=$(mktemp -d)
-
-if [ "$USE_EMULATOR" == 1 ]; then
-  emulator -wipe-data -noaudio -no-window -port $EMULATOR_PORT &
-  pid_emulator=$!
-  ADB="adb -s emulator-$EMULATOR_PORT "
-else
-  ADB="adb -d "
-fi
-
-echo "waiting to connect to device"
-$ADB wait-for-device
-echo "device is available"
-$ADB remount
-# free up enough space on the system partition for the test to run.
-$ADB shell rm -r /system/media
-
-# run a command on the device; exit with the exit status of the device
-# command.
-run_command() {
-  $ADB shell "$@" \; echo \$? | awk '{if (b) {print a}; a=$0; b=1} END {exit a}'
-}
-
-testname() {
-  echo
-  echo "$1"...
-  testname="$1"
-}
-
-fail() {
-  echo
-  echo FAIL: $testname
-  echo
-  [ "$open_pid" == "" ] || kill $open_pid
-  [ "$pid_emulator" == "" ] || kill $pid_emulator
-  exit 1
-}
-
-sha1() {
-  sha1sum $1 | awk '{print $1}'
-}
-
-free_space() {
-  run_command df | awk "/$1/ {print gensub(/K/, \"\", \"g\", \$6)}"
-}
-
-cleanup() {
-  # not necessary if we're about to kill the emulator, but nice for
-  # running on real devices or already-running emulators.
-  testname "removing test files"
-  run_command rm $WORK_DIR/bloat.dat
-  run_command rm $WORK_DIR/old.file
-  run_command rm $WORK_DIR/patch.bsdiff
-  run_command rm $WORK_DIR/applypatch
-  run_command rm $CACHE_TEMP_SOURCE
-  run_command rm /cache/bloat*.dat
-
-  [ "$pid_emulator" == "" ] || kill $pid_emulator
-
-  rm -rf $tmpdir
-}
-
-cleanup
-
-$ADB push $ANDROID_PRODUCT_OUT/system/bin/applypatch $WORK_DIR/applypatch
-
-BAD1_SHA1=$(printf "%040x" $RANDOM)
-BAD2_SHA1=$(printf "%040x" $RANDOM)
-OLD_SHA1=$(sha1 $DATA_DIR/old.file)
-NEW_SHA1=$(sha1 $DATA_DIR/new.file)
-NEW_SIZE=$(stat -c %s $DATA_DIR/new.file)
-
-# --------------- basic execution ----------------------
-
-testname "usage message"
-run_command $WORK_DIR/applypatch && fail
-
-testname "display license"
-run_command $WORK_DIR/applypatch -l | grep -q -i copyright || fail
-
-
-# --------------- check mode ----------------------
-
-$ADB push $DATA_DIR/old.file $WORK_DIR
-
-testname "check mode single"
-run_command $WORK_DIR/applypatch -c $WORK_DIR/old.file $OLD_SHA1 || fail
-
-testname "check mode multiple"
-run_command $WORK_DIR/applypatch -c $WORK_DIR/old.file $BAD1_SHA1 $OLD_SHA1 $BAD2_SHA1|| fail
-
-testname "check mode failure"
-run_command $WORK_DIR/applypatch -c $WORK_DIR/old.file $BAD2_SHA1 $BAD1_SHA1 && fail
-
-$ADB push $DATA_DIR/old.file $CACHE_TEMP_SOURCE
-# put some junk in the old file
-run_command dd if=/dev/urandom of=$WORK_DIR/old.file count=100 bs=1024 || fail
-
-testname "check mode cache (corrupted) single"
-run_command $WORK_DIR/applypatch -c $WORK_DIR/old.file $OLD_SHA1 || fail
-
-testname "check mode cache (corrupted) multiple"
-run_command $WORK_DIR/applypatch -c $WORK_DIR/old.file $BAD1_SHA1 $OLD_SHA1 $BAD2_SHA1|| fail
-
-testname "check mode cache (corrupted) failure"
-run_command $WORK_DIR/applypatch -c $WORK_DIR/old.file $BAD2_SHA1 $BAD1_SHA1 && fail
-
-# remove the old file entirely
-run_command rm $WORK_DIR/old.file
-
-testname "check mode cache (missing) single"
-run_command $WORK_DIR/applypatch -c $WORK_DIR/old.file $OLD_SHA1 || fail
-
-testname "check mode cache (missing) multiple"
-run_command $WORK_DIR/applypatch -c $WORK_DIR/old.file $BAD1_SHA1 $OLD_SHA1 $BAD2_SHA1|| fail
-
-testname "check mode cache (missing) failure"
-run_command $WORK_DIR/applypatch -c $WORK_DIR/old.file $BAD2_SHA1 $BAD1_SHA1 && fail
-
-
-# --------------- apply patch ----------------------
-
-$ADB push $DATA_DIR/old.file $WORK_DIR
-$ADB push $DATA_DIR/patch.bsdiff $WORK_DIR
-
-# Check that the partition has enough space to apply the patch without
-# copying.  If it doesn't, we'll be testing the low-space condition
-# when we intend to test the not-low-space condition.
-testname "apply patches (with enough space)"
-free_kb=$(free_space $WORK_FS)
-echo "${free_kb}kb free on /$WORK_FS."
-if (( free_kb * 1024 < NEW_SIZE * 3 / 2 )); then
-  echo "Not enough space on /$WORK_FS to patch test file."
-  echo
-  echo "This doesn't mean that applypatch is necessarily broken;"
-  echo "just that /$WORK_FS doesn't have enough free space to"
-  echo "properly run this test."
-  exit 1
-fi
-
-testname "apply bsdiff patch"
-run_command $WORK_DIR/applypatch $WORK_DIR/old.file - $NEW_SHA1 $NEW_SIZE $BAD1_SHA1:$WORK_DIR/foo $OLD_SHA1:$WORK_DIR/patch.bsdiff || fail
-$ADB pull $WORK_DIR/old.file $tmpdir/patched
-diff -q $DATA_DIR/new.file $tmpdir/patched || fail
-
-testname "reapply bsdiff patch"
-run_command $WORK_DIR/applypatch $WORK_DIR/old.file - $NEW_SHA1 $NEW_SIZE $BAD1_SHA1:$WORK_DIR/foo $OLD_SHA1:$WORK_DIR/patch.bsdiff || fail
-$ADB pull $WORK_DIR/old.file $tmpdir/patched
-diff -q $DATA_DIR/new.file $tmpdir/patched || fail
-
-
-# --------------- apply patch in new location ----------------------
-
-$ADB push $DATA_DIR/old.file $WORK_DIR
-$ADB push $DATA_DIR/patch.bsdiff $WORK_DIR
-
-# Check that the partition has enough space to apply the patch without
-# copying.  If it doesn't, we'll be testing the low-space condition
-# when we intend to test the not-low-space condition.
-testname "apply patch to new location (with enough space)"
-free_kb=$(free_space $WORK_FS)
-echo "${free_kb}kb free on /$WORK_FS."
-if (( free_kb * 1024 < NEW_SIZE * 3 / 2 )); then
-  echo "Not enough space on /$WORK_FS to patch test file."
-  echo
-  echo "This doesn't mean that applypatch is necessarily broken;"
-  echo "just that /$WORK_FS doesn't have enough free space to"
-  echo "properly run this test."
-  exit 1
-fi
-
-run_command rm $WORK_DIR/new.file
-run_command rm $CACHE_TEMP_SOURCE
-
-testname "apply bsdiff patch to new location"
-run_command $WORK_DIR/applypatch $WORK_DIR/old.file $WORK_DIR/new.file $NEW_SHA1 $NEW_SIZE $BAD1_SHA1:$WORK_DIR/foo $OLD_SHA1:$WORK_DIR/patch.bsdiff || fail
-$ADB pull $WORK_DIR/new.file $tmpdir/patched
-diff -q $DATA_DIR/new.file $tmpdir/patched || fail
-
-testname "reapply bsdiff patch to new location"
-run_command $WORK_DIR/applypatch $WORK_DIR/old.file $WORK_DIR/new.file $NEW_SHA1 $NEW_SIZE $BAD1_SHA1:$WORK_DIR/foo $OLD_SHA1:$WORK_DIR/patch.bsdiff || fail
-$ADB pull $WORK_DIR/new.file $tmpdir/patched
-diff -q $DATA_DIR/new.file $tmpdir/patched || fail
-
-$ADB push $DATA_DIR/old.file $CACHE_TEMP_SOURCE
-# put some junk in the old file
-run_command dd if=/dev/urandom of=$WORK_DIR/old.file count=100 bs=1024 || fail
-
-testname "apply bsdiff patch to new location with corrupted source"
-run_command $WORK_DIR/applypatch $WORK_DIR/old.file $WORK_DIR/new.file $NEW_SHA1 $NEW_SIZE $OLD_SHA1:$WORK_DIR/patch.bsdiff $BAD1_SHA1:$WORK_DIR/foo || fail
-$ADB pull $WORK_DIR/new.file $tmpdir/patched
-diff -q $DATA_DIR/new.file $tmpdir/patched || fail
-
-# put some junk in the cache copy, too
-run_command dd if=/dev/urandom of=$CACHE_TEMP_SOURCE count=100 bs=1024 || fail
-
-run_command rm $WORK_DIR/new.file
-testname "apply bsdiff patch to new location with corrupted source and copy (no new file)"
-run_command $WORK_DIR/applypatch $WORK_DIR/old.file $WORK_DIR/new.file $NEW_SHA1 $NEW_SIZE $OLD_SHA1:$WORK_DIR/patch.bsdiff $BAD1_SHA1:$WORK_DIR/foo && fail
-
-# put some junk in the new file
-run_command dd if=/dev/urandom of=$WORK_DIR/new.file count=100 bs=1024 || fail
-
-testname "apply bsdiff patch to new location with corrupted source and copy (bad new file)"
-run_command $WORK_DIR/applypatch $WORK_DIR/old.file $WORK_DIR/new.file $NEW_SHA1 $NEW_SIZE $OLD_SHA1:$WORK_DIR/patch.bsdiff $BAD1_SHA1:$WORK_DIR/foo && fail
-
-# --------------- apply patch with low space on /system ----------------------
-
-$ADB push $DATA_DIR/old.file $WORK_DIR
-$ADB push $DATA_DIR/patch.bsdiff $WORK_DIR
-
-free_kb=$(free_space $WORK_FS)
-echo "${free_kb}kb free on /$WORK_FS; we'll soon fix that."
-echo run_command dd if=/dev/zero of=$WORK_DIR/bloat.dat count=$((free_kb-512)) bs=1024 || fail
-run_command dd if=/dev/zero of=$WORK_DIR/bloat.dat count=$((free_kb-512)) bs=1024 || fail
-free_kb=$(free_space $WORK_FS)
-echo "${free_kb}kb free on /$WORK_FS now."
-
-testname "apply bsdiff patch with low space"
-run_command $WORK_DIR/applypatch $WORK_DIR/old.file - $NEW_SHA1 $NEW_SIZE $BAD1_SHA1:$WORK_DIR/foo $OLD_SHA1:$WORK_DIR/patch.bsdiff || fail
-$ADB pull $WORK_DIR/old.file $tmpdir/patched
-diff -q $DATA_DIR/new.file $tmpdir/patched || fail
-
-testname "reapply bsdiff patch with low space"
-run_command $WORK_DIR/applypatch $WORK_DIR/old.file - $NEW_SHA1 $NEW_SIZE $BAD1_SHA1:$WORK_DIR/foo $OLD_SHA1:$WORK_DIR/patch.bsdiff || fail
-$ADB pull $WORK_DIR/old.file $tmpdir/patched
-diff -q $DATA_DIR/new.file $tmpdir/patched || fail
-
-# --------------- apply patch with low space on /system and /cache ----------------------
-
-$ADB push $DATA_DIR/old.file $WORK_DIR
-$ADB push $DATA_DIR/patch.bsdiff $WORK_DIR
-
-free_kb=$(free_space $WORK_FS)
-echo "${free_kb}kb free on /$WORK_FS"
-
-run_command mkdir /cache/subdir
-run_command 'echo > /cache/subdir/a.file'
-run_command 'echo > /cache/a.file'
-run_command mkdir /cache/recovery /cache/recovery/otatest
-run_command 'echo > /cache/recovery/otatest/b.file'
-run_command "echo > $CACHE_TEMP_SOURCE"
-free_kb=$(free_space cache)
-echo "${free_kb}kb free on /cache; we'll soon fix that."
-run_command dd if=/dev/zero of=/cache/bloat_small.dat count=128 bs=1024 || fail
-run_command dd if=/dev/zero of=/cache/bloat_large.dat count=$((free_kb-640)) bs=1024 || fail
-free_kb=$(free_space cache)
-echo "${free_kb}kb free on /cache now."
-
-testname "apply bsdiff patch with low space, full cache, can't delete enough"
-$ADB shell 'cat >> /cache/bloat_large.dat' & open_pid=$!
-echo "open_pid is $open_pid"
-
-# size check should fail even though it deletes some stuff
-run_command $WORK_DIR/applypatch -s $NEW_SIZE && fail
-run_command ls /cache/bloat_small.dat && fail          # was deleted
-run_command ls /cache/a.file && fail                   # was deleted
-run_command ls /cache/recovery/otatest/b.file && fail  # was deleted
-run_command ls /cache/bloat_large.dat || fail          # wasn't deleted because it was open
-run_command ls /cache/subdir/a.file || fail            # wasn't deleted because it's in a subdir
-run_command ls $CACHE_TEMP_SOURCE || fail              # wasn't deleted because it's the source file copy
-
-# should fail; not enough files can be deleted
-run_command $WORK_DIR/applypatch $WORK_DIR/old.file - $NEW_SHA1 $NEW_SIZE $BAD1_SHA1:$WORK_DIR/foo $OLD_SHA1:$WORK_DIR/patch.bsdiff && fail
-run_command ls /cache/bloat_large.dat || fail   # wasn't deleted because it was open
-run_command ls /cache/subdir/a.file || fail     # wasn't deleted because it's in a subdir
-run_command ls $CACHE_TEMP_SOURCE || fail       # wasn't deleted because it's the source file copy
-
-kill $open_pid   # /cache/bloat_large.dat is no longer open
-
-testname "apply bsdiff patch with low space, full cache, can delete enough"
-
-# should succeed after deleting /cache/bloat_large.dat
-run_command $WORK_DIR/applypatch -s $NEW_SIZE || fail
-run_command ls /cache/bloat_large.dat && fail   # was deleted
-run_command ls /cache/subdir/a.file || fail     # still wasn't deleted because it's in a subdir
-run_command ls $CACHE_TEMP_SOURCE || fail       # wasn't deleted because it's the source file copy
-
-# should succeed
-run_command $WORK_DIR/applypatch $WORK_DIR/old.file - $NEW_SHA1 $NEW_SIZE $BAD1_SHA1:$WORK_DIR/foo $OLD_SHA1:$WORK_DIR/patch.bsdiff || fail
-$ADB pull $WORK_DIR/old.file $tmpdir/patched
-diff -q $DATA_DIR/new.file $tmpdir/patched || fail
-run_command ls /cache/subdir/a.file || fail     # still wasn't deleted because it's in a subdir
-run_command ls $CACHE_TEMP_SOURCE && fail       # was deleted because patching overwrote it, then deleted it
-
-# --------------- apply patch from cache ----------------------
-
-$ADB push $DATA_DIR/old.file $CACHE_TEMP_SOURCE
-# put some junk in the old file
-run_command dd if=/dev/urandom of=$WORK_DIR/old.file count=100 bs=1024 || fail
-
-testname "apply bsdiff patch from cache (corrupted source) with low space"
-run_command $WORK_DIR/applypatch $WORK_DIR/old.file - $NEW_SHA1 $NEW_SIZE $BAD1_SHA1:$WORK_DIR/foo $OLD_SHA1:$WORK_DIR/patch.bsdiff || fail
-$ADB pull $WORK_DIR/old.file $tmpdir/patched
-diff -q $DATA_DIR/new.file $tmpdir/patched || fail
-
-$ADB push $DATA_DIR/old.file $CACHE_TEMP_SOURCE
-# remove the old file entirely
-run_command rm $WORK_DIR/old.file
-
-testname "apply bsdiff patch from cache (missing source) with low space"
-run_command $WORK_DIR/applypatch $WORK_DIR/old.file - $NEW_SHA1 $NEW_SIZE $BAD1_SHA1:$WORK_DIR/foo $OLD_SHA1:$WORK_DIR/patch.bsdiff || fail
-$ADB pull $WORK_DIR/old.file $tmpdir/patched
-diff -q $DATA_DIR/new.file $tmpdir/patched || fail
-
-
-# --------------- cleanup ----------------------
-
-cleanup
-
-echo
-echo PASS
-echo
-
diff --git a/tools/applypatch/bsdiff.c b/tools/applypatch/bsdiff.c
deleted file mode 100644
index b6d342b..0000000
--- a/tools/applypatch/bsdiff.c
+++ /dev/null
@@ -1,410 +0,0 @@
-/*
- * Copyright (C) 2009 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/*
- * Most of this code comes from bsdiff.c from the bsdiff-4.3
- * distribution, which is:
- */
-
-/*-
- * Copyright 2003-2005 Colin Percival
- * All rights reserved
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted providing that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <sys/types.h>
-
-#include <bzlib.h>
-#include <err.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#define MIN(x,y) (((x)<(y)) ? (x) : (y))
-
-static void split(off_t *I,off_t *V,off_t start,off_t len,off_t h)
-{
-	off_t i,j,k,x,tmp,jj,kk;
-
-	if(len<16) {
-		for(k=start;k<start+len;k+=j) {
-			j=1;x=V[I[k]+h];
-			for(i=1;k+i<start+len;i++) {
-				if(V[I[k+i]+h]<x) {
-					x=V[I[k+i]+h];
-					j=0;
-				};
-				if(V[I[k+i]+h]==x) {
-					tmp=I[k+j];I[k+j]=I[k+i];I[k+i]=tmp;
-					j++;
-				};
-			};
-			for(i=0;i<j;i++) V[I[k+i]]=k+j-1;
-			if(j==1) I[k]=-1;
-		};
-		return;
-	};
-
-	x=V[I[start+len/2]+h];
-	jj=0;kk=0;
-	for(i=start;i<start+len;i++) {
-		if(V[I[i]+h]<x) jj++;
-		if(V[I[i]+h]==x) kk++;
-	};
-	jj+=start;kk+=jj;
-
-	i=start;j=0;k=0;
-	while(i<jj) {
-		if(V[I[i]+h]<x) {
-			i++;
-		} else if(V[I[i]+h]==x) {
-			tmp=I[i];I[i]=I[jj+j];I[jj+j]=tmp;
-			j++;
-		} else {
-			tmp=I[i];I[i]=I[kk+k];I[kk+k]=tmp;
-			k++;
-		};
-	};
-
-	while(jj+j<kk) {
-		if(V[I[jj+j]+h]==x) {
-			j++;
-		} else {
-			tmp=I[jj+j];I[jj+j]=I[kk+k];I[kk+k]=tmp;
-			k++;
-		};
-	};
-
-	if(jj>start) split(I,V,start,jj-start,h);
-
-	for(i=0;i<kk-jj;i++) V[I[jj+i]]=kk-1;
-	if(jj==kk-1) I[jj]=-1;
-
-	if(start+len>kk) split(I,V,kk,start+len-kk,h);
-}
-
-static void qsufsort(off_t *I,off_t *V,u_char *old,off_t oldsize)
-{
-	off_t buckets[256];
-	off_t i,h,len;
-
-	for(i=0;i<256;i++) buckets[i]=0;
-	for(i=0;i<oldsize;i++) buckets[old[i]]++;
-	for(i=1;i<256;i++) buckets[i]+=buckets[i-1];
-	for(i=255;i>0;i--) buckets[i]=buckets[i-1];
-	buckets[0]=0;
-
-	for(i=0;i<oldsize;i++) I[++buckets[old[i]]]=i;
-	I[0]=oldsize;
-	for(i=0;i<oldsize;i++) V[i]=buckets[old[i]];
-	V[oldsize]=0;
-	for(i=1;i<256;i++) if(buckets[i]==buckets[i-1]+1) I[buckets[i]]=-1;
-	I[0]=-1;
-
-	for(h=1;I[0]!=-(oldsize+1);h+=h) {
-		len=0;
-		for(i=0;i<oldsize+1;) {
-			if(I[i]<0) {
-				len-=I[i];
-				i-=I[i];
-			} else {
-				if(len) I[i-len]=-len;
-				len=V[I[i]]+1-i;
-				split(I,V,i,len,h);
-				i+=len;
-				len=0;
-			};
-		};
-		if(len) I[i-len]=-len;
-	};
-
-	for(i=0;i<oldsize+1;i++) I[V[i]]=i;
-}
-
-static off_t matchlen(u_char *old,off_t oldsize,u_char *new,off_t newsize)
-{
-	off_t i;
-
-	for(i=0;(i<oldsize)&&(i<newsize);i++)
-		if(old[i]!=new[i]) break;
-
-	return i;
-}
-
-static off_t search(off_t *I,u_char *old,off_t oldsize,
-		u_char *new,off_t newsize,off_t st,off_t en,off_t *pos)
-{
-	off_t x,y;
-
-	if(en-st<2) {
-		x=matchlen(old+I[st],oldsize-I[st],new,newsize);
-		y=matchlen(old+I[en],oldsize-I[en],new,newsize);
-
-		if(x>y) {
-			*pos=I[st];
-			return x;
-		} else {
-			*pos=I[en];
-			return y;
-		}
-	};
-
-	x=st+(en-st)/2;
-	if(memcmp(old+I[x],new,MIN(oldsize-I[x],newsize))<0) {
-		return search(I,old,oldsize,new,newsize,x,en,pos);
-	} else {
-		return search(I,old,oldsize,new,newsize,st,x,pos);
-	};
-}
-
-static void offtout(off_t x,u_char *buf)
-{
-	off_t y;
-
-	if(x<0) y=-x; else y=x;
-
-		buf[0]=y%256;y-=buf[0];
-	y=y/256;buf[1]=y%256;y-=buf[1];
-	y=y/256;buf[2]=y%256;y-=buf[2];
-	y=y/256;buf[3]=y%256;y-=buf[3];
-	y=y/256;buf[4]=y%256;y-=buf[4];
-	y=y/256;buf[5]=y%256;y-=buf[5];
-	y=y/256;buf[6]=y%256;y-=buf[6];
-	y=y/256;buf[7]=y%256;
-
-	if(x<0) buf[7]|=0x80;
-}
-
-// This is main() from bsdiff.c, with the following changes:
-//
-//    - old, oldsize, new, newsize are arguments; we don't load this
-//      data from files.  old and new are owned by the caller; we
-//      don't free them at the end.
-//
-//    - the "I" block of memory is owned by the caller, who passes a
-//      pointer to *I, which can be NULL.  This way if we call
-//      bsdiff() multiple times with the same 'old' data, we only do
-//      the qsufsort() step the first time.
-//
-int bsdiff(u_char* old, off_t oldsize, off_t** IP, u_char* new, off_t newsize,
-           const char* patch_filename)
-{
-	int fd;
-	off_t *I;
-	off_t scan,pos,len;
-	off_t lastscan,lastpos,lastoffset;
-	off_t oldscore,scsc;
-	off_t s,Sf,lenf,Sb,lenb;
-	off_t overlap,Ss,lens;
-	off_t i;
-	off_t dblen,eblen;
-	u_char *db,*eb;
-	u_char buf[8];
-	u_char header[32];
-	FILE * pf;
-	BZFILE * pfbz2;
-	int bz2err;
-
-        if (*IP == NULL) {
-            off_t* V;
-            *IP = malloc((oldsize+1) * sizeof(off_t));
-            V = malloc((oldsize+1) * sizeof(off_t));
-            qsufsort(*IP, V, old, oldsize);
-            free(V);
-        }
-        I = *IP;
-
-	if(((db=malloc(newsize+1))==NULL) ||
-		((eb=malloc(newsize+1))==NULL)) err(1,NULL);
-	dblen=0;
-	eblen=0;
-
-	/* Create the patch file */
-	if ((pf = fopen(patch_filename, "w")) == NULL)
-              err(1, "%s", patch_filename);
-
-	/* Header is
-		0	8	 "BSDIFF40"
-		8	8	length of bzip2ed ctrl block
-		16	8	length of bzip2ed diff block
-		24	8	length of new file */
-	/* File is
-		0	32	Header
-		32	??	Bzip2ed ctrl block
-		??	??	Bzip2ed diff block
-		??	??	Bzip2ed extra block */
-	memcpy(header,"BSDIFF40",8);
-	offtout(0, header + 8);
-	offtout(0, header + 16);
-	offtout(newsize, header + 24);
-	if (fwrite(header, 32, 1, pf) != 1)
-		err(1, "fwrite(%s)", patch_filename);
-
-	/* Compute the differences, writing ctrl as we go */
-	if ((pfbz2 = BZ2_bzWriteOpen(&bz2err, pf, 9, 0, 0)) == NULL)
-		errx(1, "BZ2_bzWriteOpen, bz2err = %d", bz2err);
-	scan=0;len=0;
-	lastscan=0;lastpos=0;lastoffset=0;
-	while(scan<newsize) {
-		oldscore=0;
-
-		for(scsc=scan+=len;scan<newsize;scan++) {
-			len=search(I,old,oldsize,new+scan,newsize-scan,
-					0,oldsize,&pos);
-
-			for(;scsc<scan+len;scsc++)
-			if((scsc+lastoffset<oldsize) &&
-				(old[scsc+lastoffset] == new[scsc]))
-				oldscore++;
-
-			if(((len==oldscore) && (len!=0)) ||
-				(len>oldscore+8)) break;
-
-			if((scan+lastoffset<oldsize) &&
-				(old[scan+lastoffset] == new[scan]))
-				oldscore--;
-		};
-
-		if((len!=oldscore) || (scan==newsize)) {
-			s=0;Sf=0;lenf=0;
-			for(i=0;(lastscan+i<scan)&&(lastpos+i<oldsize);) {
-				if(old[lastpos+i]==new[lastscan+i]) s++;
-				i++;
-				if(s*2-i>Sf*2-lenf) { Sf=s; lenf=i; };
-			};
-
-			lenb=0;
-			if(scan<newsize) {
-				s=0;Sb=0;
-				for(i=1;(scan>=lastscan+i)&&(pos>=i);i++) {
-					if(old[pos-i]==new[scan-i]) s++;
-					if(s*2-i>Sb*2-lenb) { Sb=s; lenb=i; };
-				};
-			};
-
-			if(lastscan+lenf>scan-lenb) {
-				overlap=(lastscan+lenf)-(scan-lenb);
-				s=0;Ss=0;lens=0;
-				for(i=0;i<overlap;i++) {
-					if(new[lastscan+lenf-overlap+i]==
-					   old[lastpos+lenf-overlap+i]) s++;
-					if(new[scan-lenb+i]==
-					   old[pos-lenb+i]) s--;
-					if(s>Ss) { Ss=s; lens=i+1; };
-				};
-
-				lenf+=lens-overlap;
-				lenb-=lens;
-			};
-
-			for(i=0;i<lenf;i++)
-				db[dblen+i]=new[lastscan+i]-old[lastpos+i];
-			for(i=0;i<(scan-lenb)-(lastscan+lenf);i++)
-				eb[eblen+i]=new[lastscan+lenf+i];
-
-			dblen+=lenf;
-			eblen+=(scan-lenb)-(lastscan+lenf);
-
-			offtout(lenf,buf);
-			BZ2_bzWrite(&bz2err, pfbz2, buf, 8);
-			if (bz2err != BZ_OK)
-				errx(1, "BZ2_bzWrite, bz2err = %d", bz2err);
-
-			offtout((scan-lenb)-(lastscan+lenf),buf);
-			BZ2_bzWrite(&bz2err, pfbz2, buf, 8);
-			if (bz2err != BZ_OK)
-				errx(1, "BZ2_bzWrite, bz2err = %d", bz2err);
-
-			offtout((pos-lenb)-(lastpos+lenf),buf);
-			BZ2_bzWrite(&bz2err, pfbz2, buf, 8);
-			if (bz2err != BZ_OK)
-				errx(1, "BZ2_bzWrite, bz2err = %d", bz2err);
-
-			lastscan=scan-lenb;
-			lastpos=pos-lenb;
-			lastoffset=pos-scan;
-		};
-	};
-	BZ2_bzWriteClose(&bz2err, pfbz2, 0, NULL, NULL);
-	if (bz2err != BZ_OK)
-		errx(1, "BZ2_bzWriteClose, bz2err = %d", bz2err);
-
-	/* Compute size of compressed ctrl data */
-	if ((len = ftello(pf)) == -1)
-		err(1, "ftello");
-	offtout(len-32, header + 8);
-
-	/* Write compressed diff data */
-	if ((pfbz2 = BZ2_bzWriteOpen(&bz2err, pf, 9, 0, 0)) == NULL)
-		errx(1, "BZ2_bzWriteOpen, bz2err = %d", bz2err);
-	BZ2_bzWrite(&bz2err, pfbz2, db, dblen);
-	if (bz2err != BZ_OK)
-		errx(1, "BZ2_bzWrite, bz2err = %d", bz2err);
-	BZ2_bzWriteClose(&bz2err, pfbz2, 0, NULL, NULL);
-	if (bz2err != BZ_OK)
-		errx(1, "BZ2_bzWriteClose, bz2err = %d", bz2err);
-
-	/* Compute size of compressed diff data */
-	if ((newsize = ftello(pf)) == -1)
-		err(1, "ftello");
-	offtout(newsize - len, header + 16);
-
-	/* Write compressed extra data */
-	if ((pfbz2 = BZ2_bzWriteOpen(&bz2err, pf, 9, 0, 0)) == NULL)
-		errx(1, "BZ2_bzWriteOpen, bz2err = %d", bz2err);
-	BZ2_bzWrite(&bz2err, pfbz2, eb, eblen);
-	if (bz2err != BZ_OK)
-		errx(1, "BZ2_bzWrite, bz2err = %d", bz2err);
-	BZ2_bzWriteClose(&bz2err, pfbz2, 0, NULL, NULL);
-	if (bz2err != BZ_OK)
-		errx(1, "BZ2_bzWriteClose, bz2err = %d", bz2err);
-
-	/* Seek to the beginning, write the header, and close the file */
-	if (fseeko(pf, 0, SEEK_SET))
-		err(1, "fseeko");
-	if (fwrite(header, 32, 1, pf) != 1)
-		err(1, "fwrite(%s)", patch_filename);
-	if (fclose(pf))
-		err(1, "fclose");
-
-	/* Free the memory we used */
-	free(db);
-	free(eb);
-
-	return 0;
-}
diff --git a/tools/applypatch/bspatch.c b/tools/applypatch/bspatch.c
deleted file mode 100644
index d5cd617..0000000
--- a/tools/applypatch/bspatch.c
+++ /dev/null
@@ -1,252 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// This file is a nearly line-for-line copy of bspatch.c from the
-// bsdiff-4.3 distribution; the primary differences being how the
-// input and output data are read and the error handling.  Running
-// applypatch with the -l option will display the bsdiff license
-// notice.
-
-#include <stdio.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <unistd.h>
-#include <string.h>
-
-#include <bzlib.h>
-
-#include "mincrypt/sha.h"
-#include "applypatch.h"
-
-void ShowBSDiffLicense() {
-  puts("The bsdiff library used herein is:\n"
-       "\n"
-       "Copyright 2003-2005 Colin Percival\n"
-       "All rights reserved\n"
-       "\n"
-       "Redistribution and use in source and binary forms, with or without\n"
-       "modification, are permitted providing that the following conditions\n"
-       "are met:\n"
-       "1. Redistributions of source code must retain the above copyright\n"
-       "   notice, this list of conditions and the following disclaimer.\n"
-       "2. Redistributions in binary form must reproduce the above copyright\n"
-       "   notice, this list of conditions and the following disclaimer in the\n"
-       "   documentation and/or other materials provided with the distribution.\n"
-       "\n"
-       "THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR\n"
-       "IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n"
-       "WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\n"
-       "ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY\n"
-       "DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\n"
-       "DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\n"
-       "OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\n"
-       "HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,\n"
-       "STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING\n"
-       "IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\n"
-       "POSSIBILITY OF SUCH DAMAGE.\n"
-       "\n------------------\n\n"
-       "This program uses Julian R Seward's \"libbzip2\" library, available\n"
-       "from http://www.bzip.org/.\n"
-       );
-}
-
-static off_t offtin(u_char *buf)
-{
-  off_t y;
-
-  y=buf[7]&0x7F;
-  y=y*256;y+=buf[6];
-  y=y*256;y+=buf[5];
-  y=y*256;y+=buf[4];
-  y=y*256;y+=buf[3];
-  y=y*256;y+=buf[2];
-  y=y*256;y+=buf[1];
-  y=y*256;y+=buf[0];
-
-  if(buf[7]&0x80) y=-y;
-
-  return y;
-}
-
-
-int ApplyBSDiffPatch(const unsigned char* old_data, ssize_t old_size,
-                     const char* patch_filename, ssize_t patch_offset,
-                     SinkFn sink, void* token, SHA_CTX* ctx) {
-
-  unsigned char* new_data;
-  ssize_t new_size;
-  if (ApplyBSDiffPatchMem(old_data, old_size, patch_filename, patch_offset,
-                          &new_data, &new_size) != 0) {
-    return -1;
-  }
-
-  if (sink(new_data, new_size, token) < new_size) {
-    fprintf(stderr, "short write of output: %d (%s)\n", errno, strerror(errno));
-    return 1;
-  }
-  if (ctx) {
-    SHA_update(ctx, new_data, new_size);
-  }
-  free(new_data);
-
-  return 0;
-}
-
-int ApplyBSDiffPatchMem(const unsigned char* old_data, ssize_t old_size,
-                        const char* patch_filename, ssize_t patch_offset,
-                        unsigned char** new_data, ssize_t* new_size) {
-
-  FILE* f;
-  if ((f = fopen(patch_filename, "rb")) == NULL) {
-    fprintf(stderr, "failed to open patch file\n");
-    return 1;
-  }
-
-  // File format:
-  //   0       8       "BSDIFF40"
-  //   8       8       X
-  //   16      8       Y
-  //   24      8       sizeof(newfile)
-  //   32      X       bzip2(control block)
-  //   32+X    Y       bzip2(diff block)
-  //   32+X+Y  ???     bzip2(extra block)
-  // with control block a set of triples (x,y,z) meaning "add x bytes
-  // from oldfile to x bytes from the diff block; copy y bytes from the
-  // extra block; seek forwards in oldfile by z bytes".
-
-  fseek(f, patch_offset, SEEK_SET);
-
-  unsigned char header[32];
-  if (fread(header, 1, 32, f) < 32) {
-    fprintf(stderr, "failed to read patch file header\n");
-    return 1;
-  }
-
-  if (memcmp(header, "BSDIFF40", 8) != 0) {
-    fprintf(stderr, "corrupt bsdiff patch file header (magic number)\n");
-    return 1;
-  }
-
-  ssize_t ctrl_len, data_len;
-  ctrl_len = offtin(header+8);
-  data_len = offtin(header+16);
-  *new_size = offtin(header+24);
-
-  if (ctrl_len < 0 || data_len < 0 || *new_size < 0) {
-    fprintf(stderr, "corrupt patch file header (data lengths)\n");
-    return 1;
-  }
-
-  fclose(f);
-
-  int bzerr;
-
-#define OPEN_AT(f, bzf, offset)                                          \
-  FILE* f;                                                               \
-  BZFILE* bzf;                                                           \
-  if ((f = fopen(patch_filename, "rb")) == NULL) {                       \
-    fprintf(stderr, "failed to open patch file\n");                      \
-    return 1;                                                            \
-  }                                                                      \
-  if (fseeko(f, offset+patch_offset, SEEK_SET)) {                        \
-    fprintf(stderr, "failed to seek in patch file\n");                   \
-    return 1;                                                            \
-  }                                                                      \
-  if ((bzf = BZ2_bzReadOpen(&bzerr, f, 0, 0, NULL, 0)) == NULL) {        \
-    fprintf(stderr, "failed to bzReadOpen in patch file (%d)\n", bzerr); \
-    return 1;                                                            \
-  }
-
-  OPEN_AT(cpf, cpfbz2, 32);
-  OPEN_AT(dpf, dpfbz2, 32+ctrl_len);
-  OPEN_AT(epf, epfbz2, 32+ctrl_len+data_len);
-
-#undef OPEN_AT
-
-  *new_data = malloc(*new_size);
-  if (*new_data == NULL) {
-    fprintf(stderr, "failed to allocate %d bytes of memory for output file\n",
-            (int)*new_size);
-    return 1;
-  }
-
-  off_t oldpos = 0, newpos = 0;
-  off_t ctrl[3];
-  off_t len_read;
-  int i;
-  unsigned char buf[8];
-  while (newpos < *new_size) {
-    // Read control data
-    for (i = 0; i < 3; ++i) {
-      len_read = BZ2_bzRead(&bzerr, cpfbz2, buf, 8);
-      if (len_read < 8 || !(bzerr == BZ_OK || bzerr == BZ_STREAM_END)) {
-        fprintf(stderr, "corrupt patch (read control)\n");
-        return 1;
-      }
-      ctrl[i] = offtin(buf);
-    }
-
-    // Sanity check
-    if (newpos + ctrl[0] > *new_size) {
-      fprintf(stderr, "corrupt patch (new file overrun)\n");
-      return 1;
-    }
-
-    // Read diff string
-    len_read = BZ2_bzRead(&bzerr, dpfbz2, *new_data + newpos, ctrl[0]);
-    if (len_read < ctrl[0] || !(bzerr == BZ_OK || bzerr == BZ_STREAM_END)) {
-      fprintf(stderr, "corrupt patch (read diff)\n");
-      return 1;
-    }
-
-    // Add old data to diff string
-    for (i = 0; i < ctrl[0]; ++i) {
-      if ((oldpos+i >= 0) && (oldpos+i < old_size)) {
-        (*new_data)[newpos+i] += old_data[oldpos+i];
-      }
-    }
-
-    // Adjust pointers
-    newpos += ctrl[0];
-    oldpos += ctrl[0];
-
-    // Sanity check
-    if (newpos + ctrl[1] > *new_size) {
-      fprintf(stderr, "corrupt patch (new file overrun)\n");
-      return 1;
-    }
-
-    // Read extra string
-    len_read = BZ2_bzRead(&bzerr, epfbz2, *new_data + newpos, ctrl[1]);
-    if (len_read < ctrl[1] || !(bzerr == BZ_OK || bzerr == BZ_STREAM_END)) {
-      fprintf(stderr, "corrupt patch (read extra)\n");
-      return 1;
-    }
-
-    // Adjust pointers
-    newpos += ctrl[1];
-    oldpos += ctrl[2];
-  }
-
-  BZ2_bzReadClose(&bzerr, cpfbz2);
-  BZ2_bzReadClose(&bzerr, dpfbz2);
-  BZ2_bzReadClose(&bzerr, epfbz2);
-  fclose(cpf);
-  fclose(dpf);
-  fclose(epf);
-
-  return 0;
-}
diff --git a/tools/applypatch/freecache.c b/tools/applypatch/freecache.c
deleted file mode 100644
index 9827fda..0000000
--- a/tools/applypatch/freecache.c
+++ /dev/null
@@ -1,172 +0,0 @@
-#include <errno.h>
-#include <libgen.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/statfs.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <ctype.h>
-
-#include "applypatch.h"
-
-static int EliminateOpenFiles(char** files, int file_count) {
-  DIR* d;
-  struct dirent* de;
-  d = opendir("/proc");
-  if (d == NULL) {
-    printf("error opening /proc: %s\n", strerror(errno));
-    return -1;
-  }
-  while ((de = readdir(d)) != 0) {
-    int i;
-    for (i = 0; de->d_name[i] != '\0' && isdigit(de->d_name[i]); ++i);
-    if (de->d_name[i]) continue;
-
-    // de->d_name[i] is numeric
-
-    char path[FILENAME_MAX];
-    strcpy(path, "/proc/");
-    strcat(path, de->d_name);
-    strcat(path, "/fd/");
-
-    DIR* fdd;
-    struct dirent* fdde;
-    fdd = opendir(path);
-    if (fdd == NULL) {
-      printf("error opening %s: %s\n", path, strerror(errno));
-      continue;
-    }
-    while ((fdde = readdir(fdd)) != 0) {
-      char fd_path[FILENAME_MAX];
-      char link[FILENAME_MAX];
-      strcpy(fd_path, path);
-      strcat(fd_path, fdde->d_name);
-
-      int count;
-      count = readlink(fd_path, link, sizeof(link)-1);
-      if (count >= 0) {
-        link[count] = '\0';
-
-        // This is inefficient, but it should only matter if there are
-        // lots of files in /cache, and lots of them are open (neither
-        // of which should be true, especially in recovery).
-        if (strncmp(link, "/cache/", 7) == 0) {
-          int j;
-          for (j = 0; j < file_count; ++j) {
-            if (files[j] && strcmp(files[j], link) == 0) {
-              printf("%s is open by %s\n", link, de->d_name);
-              free(files[j]);
-              files[j] = NULL;
-            }
-          }
-        }
-      }
-    }
-    closedir(fdd);
-  }
-  closedir(d);
-
-  return 0;
-}
-
-int FindExpendableFiles(char*** names, int* entries) {
-  DIR* d;
-  struct dirent* de;
-  int size = 32;
-  *entries = 0;
-  *names = malloc(size * sizeof(char*));
-
-  char path[FILENAME_MAX];
-
-  // We're allowed to delete unopened regular files in any of these
-  // directories.
-  const char* dirs[2] = {"/cache", "/cache/recovery/otatest"};
-
-  unsigned int i;
-  for (i = 0; i < sizeof(dirs)/sizeof(dirs[0]); ++i) {
-    d = opendir(dirs[i]);
-    if (d == NULL) {
-      printf("error opening %s: %s\n", dirs[i], strerror(errno));
-      continue;
-    }
-
-    // Look for regular files in the directory (not in any subdirectories).
-    while ((de = readdir(d)) != 0) {
-      strcpy(path, dirs[i]);
-      strcat(path, "/");
-      strcat(path, de->d_name);
-
-      // We can't delete CACHE_TEMP_SOURCE; if it's there we might have
-      // restarted during installation and could be depending on it to
-      // be there.
-      if (strcmp(path, CACHE_TEMP_SOURCE) == 0) continue;
-
-      struct stat st;
-      if (stat(path, &st) == 0 && S_ISREG(st.st_mode)) {
-        if (*entries >= size) {
-          size *= 2;
-          *names = realloc(*names, size * sizeof(char*));
-        }
-        (*names)[(*entries)++] = strdup(path);
-      }
-    }
-
-    closedir(d);
-  }
-
-  printf("%d regular files in deletable directories\n", *entries);
-
-  if (EliminateOpenFiles(*names, *entries) < 0) {
-    return -1;
-  }
-
-  return 0;
-}
-
-int MakeFreeSpaceOnCache(size_t bytes_needed) {
-  size_t free_now = FreeSpaceForFile("/cache");
-  printf("%ld bytes free on /cache (%ld needed)\n",
-         (long)free_now, (long)bytes_needed);
-
-  if (free_now >= bytes_needed) {
-    return 0;
-  }
-
-  char** names;
-  int entries;
-
-  if (FindExpendableFiles(&names, &entries) < 0) {
-    return -1;
-  }
-
-  if (entries == 0) {
-    // nothing we can delete to free up space!
-    printf("no files can be deleted to free space on /cache\n");
-    return -1;
-  }
-
-  // We could try to be smarter about which files to delete:  the
-  // biggest ones?  the smallest ones that will free up enough space?
-  // the oldest?  the newest?
-  //
-  // Instead, we'll be dumb.
-
-  int i;
-  for (i = 0; i < entries && free_now < bytes_needed; ++i) {
-    if (names[i]) {
-      unlink(names[i]);
-      free_now = FreeSpaceForFile("/cache");
-      printf("deleted %s; now %ld bytes free\n", names[i], (long)free_now);
-      free(names[i]);
-    }
-  }
-
-  for (; i < entries; ++i) {
-    free(names[i]);
-  }
-  free(names);
-
-  return (free_now >= bytes_needed) ? 0 : -1;
-}
diff --git a/tools/applypatch/imgdiff.c b/tools/applypatch/imgdiff.c
deleted file mode 100644
index 6b9ebee..0000000
--- a/tools/applypatch/imgdiff.c
+++ /dev/null
@@ -1,1010 +0,0 @@
-/*
- * Copyright (C) 2009 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/*
- * This program constructs binary patches for images -- such as boot.img
- * and recovery.img -- that consist primarily of large chunks of gzipped
- * data interspersed with uncompressed data.  Doing a naive bsdiff of
- * these files is not useful because small changes in the data lead to
- * large changes in the compressed bitstream; bsdiff patches of gzipped
- * data are typically as large as the data itself.
- *
- * To patch these usefully, we break the source and target images up into
- * chunks of two types: "normal" and "gzip".  Normal chunks are simply
- * patched using a plain bsdiff.  Gzip chunks are first expanded, then a
- * bsdiff is applied to the uncompressed data, then the patched data is
- * gzipped using the same encoder parameters.  Patched chunks are
- * concatenated together to create the output file; the output image
- * should be *exactly* the same series of bytes as the target image used
- * originally to generate the patch.
- *
- * To work well with this tool, the gzipped sections of the target
- * image must have been generated using the same deflate encoder that
- * is available in applypatch, namely, the one in the zlib library.
- * In practice this means that images should be compressed using the
- * "minigzip" tool included in the zlib distribution, not the GNU gzip
- * program.
- *
- * An "imgdiff" patch consists of a header describing the chunk structure
- * of the file and any encoding parameters needed for the gzipped
- * chunks, followed by N bsdiff patches, one per chunk.
- *
- * For a diff to be generated, the source and target images must have the
- * same "chunk" structure: that is, the same number of gzipped and normal
- * chunks in the same order.  Android boot and recovery images currently
- * consist of five chunks:  a small normal header, a gzipped kernel, a
- * small normal section, a gzipped ramdisk, and finally a small normal
- * footer.
- *
- * Caveats:  we locate gzipped sections within the source and target
- * images by searching for the byte sequence 1f8b0800:  1f8b is the gzip
- * magic number; 08 specifies the "deflate" encoding [the only encoding
- * supported by the gzip standard]; and 00 is the flags byte.  We do not
- * currently support any extra header fields (which would be indicated by
- * a nonzero flags byte).  We also don't handle the case when that byte
- * sequence appears spuriously in the file.  (Note that it would have to
- * occur spuriously within a normal chunk to be a problem.)
- *
- *
- * The imgdiff patch header looks like this:
- *
- *    "IMGDIFF1"                  (8)   [magic number and version]
- *    chunk count                 (4)
- *    for each chunk:
- *        chunk type              (4)   [CHUNK_{NORMAL, GZIP, DEFLATE, RAW}]
- *        if chunk type == CHUNK_NORMAL:
- *           source start         (8)
- *           source len           (8)
- *           bsdiff patch offset  (8)   [from start of patch file]
- *        if chunk type == CHUNK_GZIP:      (version 1 only)
- *           source start         (8)
- *           source len           (8)
- *           bsdiff patch offset  (8)   [from start of patch file]
- *           source expanded len  (8)   [size of uncompressed source]
- *           target expected len  (8)   [size of uncompressed target]
- *           gzip level           (4)
- *                method          (4)
- *                windowBits      (4)
- *                memLevel        (4)
- *                strategy        (4)
- *           gzip header len      (4)
- *           gzip header          (gzip header len)
- *           gzip footer          (8)
- *        if chunk type == CHUNK_DEFLATE:   (version 2 only)
- *           source start         (8)
- *           source len           (8)
- *           bsdiff patch offset  (8)   [from start of patch file]
- *           source expanded len  (8)   [size of uncompressed source]
- *           target expected len  (8)   [size of uncompressed target]
- *           gzip level           (4)
- *                method          (4)
- *                windowBits      (4)
- *                memLevel        (4)
- *                strategy        (4)
- *        if chunk type == RAW:             (version 2 only)
- *           target len           (4)
- *           data                 (target len)
- *
- * All integers are little-endian.  "source start" and "source len"
- * specify the section of the input image that comprises this chunk,
- * including the gzip header and footer for gzip chunks.  "source
- * expanded len" is the size of the uncompressed source data.  "target
- * expected len" is the size of the uncompressed data after applying
- * the bsdiff patch.  The next five parameters specify the zlib
- * parameters to be used when compressing the patched data, and the
- * next three specify the header and footer to be wrapped around the
- * compressed data to create the output chunk (so that header contents
- * like the timestamp are recreated exactly).
- *
- * After the header there are 'chunk count' bsdiff patches; the offset
- * of each from the beginning of the file is specified in the header.
- */
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <sys/types.h>
-
-#include "zlib.h"
-#include "imgdiff.h"
-#include "utils.h"
-
-typedef struct {
-  int type;             // CHUNK_NORMAL, CHUNK_DEFLATE
-  size_t start;         // offset of chunk in original image file
-
-  size_t len;
-  unsigned char* data;  // data to be patched (uncompressed, for deflate chunks)
-
-  size_t source_start;
-  size_t source_len;
-
-  off_t* I;             // used by bsdiff
-
-  // --- for CHUNK_DEFLATE chunks only: ---
-
-  // original (compressed) deflate data
-  size_t deflate_len;
-  unsigned char* deflate_data;
-
-  char* filename;       // used for zip entries
-
-  // deflate encoder parameters
-  int level, method, windowBits, memLevel, strategy;
-
-  size_t source_uncompressed_len;
-} ImageChunk;
-
-typedef struct {
-  int data_offset;
-  int deflate_len;
-  int uncomp_len;
-  char* filename;
-} ZipFileEntry;
-
-static int fileentry_compare(const void* a, const void* b) {
-  int ao = ((ZipFileEntry*)a)->data_offset;
-  int bo = ((ZipFileEntry*)b)->data_offset;
-  if (ao < bo) {
-    return -1;
-  } else if (ao > bo) {
-    return 1;
-  } else {
-    return 0;
-  }
-}
-
-// from bsdiff.c
-int bsdiff(u_char* old, off_t oldsize, off_t** IP, u_char* new, off_t newsize,
-           const char* patch_filename);
-
-unsigned char* ReadZip(const char* filename,
-                       int* num_chunks, ImageChunk** chunks,
-                       int include_pseudo_chunk) {
-  struct stat st;
-  if (stat(filename, &st) != 0) {
-    printf("failed to stat \"%s\": %s\n", filename, strerror(errno));
-    return NULL;
-  }
-
-  unsigned char* img = malloc(st.st_size);
-  FILE* f = fopen(filename, "rb");
-  if (fread(img, 1, st.st_size, f) != st.st_size) {
-    printf("failed to read \"%s\" %s\n", filename, strerror(errno));
-    fclose(f);
-    return NULL;
-  }
-  fclose(f);
-
-  // look for the end-of-central-directory record.
-
-  int i;
-  for (i = st.st_size-20; i >= 0 && i > st.st_size - 65600; --i) {
-    if (img[i] == 0x50 && img[i+1] == 0x4b &&
-        img[i+2] == 0x05 && img[i+3] == 0x06) {
-      break;
-    }
-  }
-  // double-check: this archive consists of a single "disk"
-  if (!(img[i+4] == 0 && img[i+5] == 0 && img[i+6] == 0 && img[i+7] == 0)) {
-    printf("can't process multi-disk archive\n");
-    return NULL;
-  }
-
-  int cdcount = Read2(img+i+8);
-  int cdoffset = Read4(img+i+16);
-
-  ZipFileEntry* temp_entries = malloc(cdcount * sizeof(ZipFileEntry));
-  int entrycount = 0;
-
-  unsigned char* cd = img+cdoffset;
-  for (i = 0; i < cdcount; ++i) {
-    if (!(cd[0] == 0x50 && cd[1] == 0x4b && cd[2] == 0x01 && cd[3] == 0x02)) {
-      printf("bad central directory entry %d\n", i);
-      return NULL;
-    }
-
-    int clen = Read4(cd+20);   // compressed len
-    int ulen = Read4(cd+24);   // uncompressed len
-    int nlen = Read2(cd+28);   // filename len
-    int xlen = Read2(cd+30);   // extra field len
-    int mlen = Read2(cd+32);   // file comment len
-    int hoffset = Read4(cd+42);   // local header offset
-
-    char* filename = malloc(nlen+1);
-    memcpy(filename, cd+46, nlen);
-    filename[nlen] = '\0';
-
-    int method = Read2(cd+10);
-
-    cd += 46 + nlen + xlen + mlen;
-
-    if (method != 8) {  // 8 == deflate
-      free(filename);
-      continue;
-    }
-
-    unsigned char* lh = img + hoffset;
-
-    if (!(lh[0] == 0x50 && lh[1] == 0x4b && lh[2] == 0x03 && lh[3] == 0x04)) {
-      printf("bad local file header entry %d\n", i);
-      return NULL;
-    }
-
-    if (Read2(lh+26) != nlen || memcmp(lh+30, filename, nlen) != 0) {
-      printf("central dir filename doesn't match local header\n");
-      return NULL;
-    }
-
-    xlen = Read2(lh+28);   // extra field len; might be different from CD entry?
-
-    temp_entries[entrycount].data_offset = hoffset+30+nlen+xlen;
-    temp_entries[entrycount].deflate_len = clen;
-    temp_entries[entrycount].uncomp_len = ulen;
-    temp_entries[entrycount].filename = filename;
-    ++entrycount;
-  }
-
-  qsort(temp_entries, entrycount, sizeof(ZipFileEntry), fileentry_compare);
-
-#if 0
-  printf("found %d deflated entries\n", entrycount);
-  for (i = 0; i < entrycount; ++i) {
-    printf("off %10d  len %10d unlen %10d   %p %s\n",
-           temp_entries[i].data_offset,
-           temp_entries[i].deflate_len,
-           temp_entries[i].uncomp_len,
-           temp_entries[i].filename,
-           temp_entries[i].filename);
-  }
-#endif
-
-  *num_chunks = 0;
-  *chunks = malloc((entrycount*2+2) * sizeof(ImageChunk));
-  ImageChunk* curr = *chunks;
-
-  if (include_pseudo_chunk) {
-    curr->type = CHUNK_NORMAL;
-    curr->start = 0;
-    curr->len = st.st_size;
-    curr->data = img;
-    curr->filename = NULL;
-    curr->I = NULL;
-    ++curr;
-    ++*num_chunks;
-  }
-
-  int pos = 0;
-  int nextentry = 0;
-
-  while (pos < st.st_size) {
-    if (nextentry < entrycount && pos == temp_entries[nextentry].data_offset) {
-      curr->type = CHUNK_DEFLATE;
-      curr->start = pos;
-      curr->deflate_len = temp_entries[nextentry].deflate_len;
-      curr->deflate_data = img + pos;
-      curr->filename = temp_entries[nextentry].filename;
-      curr->I = NULL;
-
-      curr->len = temp_entries[nextentry].uncomp_len;
-      curr->data = malloc(curr->len);
-
-      z_stream strm;
-      strm.zalloc = Z_NULL;
-      strm.zfree = Z_NULL;
-      strm.opaque = Z_NULL;
-      strm.avail_in = curr->deflate_len;
-      strm.next_in = curr->deflate_data;
-
-      // -15 means we are decoding a 'raw' deflate stream; zlib will
-      // not expect zlib headers.
-      int ret = inflateInit2(&strm, -15);
-
-      strm.avail_out = curr->len;
-      strm.next_out = curr->data;
-      ret = inflate(&strm, Z_NO_FLUSH);
-      if (ret != Z_STREAM_END) {
-        printf("failed to inflate \"%s\"; %d\n", curr->filename, ret);
-        return NULL;
-      }
-
-      inflateEnd(&strm);
-
-      pos += curr->deflate_len;
-      ++nextentry;
-      ++*num_chunks;
-      ++curr;
-      continue;
-    }
-
-    // use a normal chunk to take all the data up to the start of the
-    // next deflate section.
-
-    curr->type = CHUNK_NORMAL;
-    curr->start = pos;
-    if (nextentry < entrycount) {
-      curr->len = temp_entries[nextentry].data_offset - pos;
-    } else {
-      curr->len = st.st_size - pos;
-    }
-    curr->data = img + pos;
-    curr->filename = NULL;
-    curr->I = NULL;
-    pos += curr->len;
-
-    ++*num_chunks;
-    ++curr;
-  }
-
-  free(temp_entries);
-  return img;
-}
-
-/*
- * Read the given file and break it up into chunks, putting the number
- * of chunks and their info in *num_chunks and **chunks,
- * respectively.  Returns a malloc'd block of memory containing the
- * contents of the file; various pointers in the output chunk array
- * will point into this block of memory.  The caller should free the
- * return value when done with all the chunks.  Returns NULL on
- * failure.
- */
-unsigned char* ReadImage(const char* filename,
-                         int* num_chunks, ImageChunk** chunks) {
-  struct stat st;
-  if (stat(filename, &st) != 0) {
-    printf("failed to stat \"%s\": %s\n", filename, strerror(errno));
-    return NULL;
-  }
-
-  unsigned char* img = malloc(st.st_size + 4);
-  FILE* f = fopen(filename, "rb");
-  if (fread(img, 1, st.st_size, f) != st.st_size) {
-    printf("failed to read \"%s\" %s\n", filename, strerror(errno));
-    fclose(f);
-    return NULL;
-  }
-  fclose(f);
-
-  // append 4 zero bytes to the data so we can always search for the
-  // four-byte string 1f8b0800 starting at any point in the actual
-  // file data, without special-casing the end of the data.
-  memset(img+st.st_size, 0, 4);
-
-  size_t pos = 0;
-
-  *num_chunks = 0;
-  *chunks = NULL;
-
-  while (pos < st.st_size) {
-    unsigned char* p = img+pos;
-
-    if (st.st_size - pos >= 4 &&
-        p[0] == 0x1f && p[1] == 0x8b &&
-        p[2] == 0x08 &&    // deflate compression
-        p[3] == 0x00) {    // no header flags
-      // 'pos' is the offset of the start of a gzip chunk.
-
-      *num_chunks += 3;
-      *chunks = realloc(*chunks, *num_chunks * sizeof(ImageChunk));
-      ImageChunk* curr = *chunks + (*num_chunks-3);
-
-      // create a normal chunk for the header.
-      curr->start = pos;
-      curr->type = CHUNK_NORMAL;
-      curr->len = GZIP_HEADER_LEN;
-      curr->data = p;
-      curr->I = NULL;
-
-      pos += curr->len;
-      p += curr->len;
-      ++curr;
-
-      curr->type = CHUNK_DEFLATE;
-      curr->filename = NULL;
-      curr->I = NULL;
-
-      // We must decompress this chunk in order to discover where it
-      // ends, and so we can put the uncompressed data and its length
-      // into curr->data and curr->len.
-
-      size_t allocated = 32768;
-      curr->len = 0;
-      curr->data = malloc(allocated);
-      curr->start = pos;
-      curr->deflate_data = p;
-
-      z_stream strm;
-      strm.zalloc = Z_NULL;
-      strm.zfree = Z_NULL;
-      strm.opaque = Z_NULL;
-      strm.avail_in = st.st_size - pos;
-      strm.next_in = p;
-
-      // -15 means we are decoding a 'raw' deflate stream; zlib will
-      // not expect zlib headers.
-      int ret = inflateInit2(&strm, -15);
-
-      do {
-        strm.avail_out = allocated - curr->len;
-        strm.next_out = curr->data + curr->len;
-        ret = inflate(&strm, Z_NO_FLUSH);
-        curr->len = allocated - strm.avail_out;
-        if (strm.avail_out == 0) {
-          allocated *= 2;
-          curr->data = realloc(curr->data, allocated);
-        }
-      } while (ret != Z_STREAM_END);
-
-      curr->deflate_len = st.st_size - strm.avail_in - pos;
-      inflateEnd(&strm);
-      pos += curr->deflate_len;
-      p += curr->deflate_len;
-      ++curr;
-
-      // create a normal chunk for the footer
-
-      curr->type = CHUNK_NORMAL;
-      curr->start = pos;
-      curr->len = GZIP_FOOTER_LEN;
-      curr->data = img+pos;
-      curr->I = NULL;
-
-      pos += curr->len;
-      p += curr->len;
-      ++curr;
-
-      // The footer (that we just skipped over) contains the size of
-      // the uncompressed data.  Double-check to make sure that it
-      // matches the size of the data we got when we actually did
-      // the decompression.
-      size_t footer_size = Read4(p-4);
-      if (footer_size != curr[-2].len) {
-        printf("Error: footer size %d != decompressed size %d\n",
-                footer_size, curr[-2].len);
-        free(img);
-        return NULL;
-      }
-    } else {
-      // Reallocate the list for every chunk; we expect the number of
-      // chunks to be small (5 for typical boot and recovery images).
-      ++*num_chunks;
-      *chunks = realloc(*chunks, *num_chunks * sizeof(ImageChunk));
-      ImageChunk* curr = *chunks + (*num_chunks-1);
-      curr->start = pos;
-      curr->I = NULL;
-
-      // 'pos' is not the offset of the start of a gzip chunk, so scan
-      // forward until we find a gzip header.
-      curr->type = CHUNK_NORMAL;
-      curr->data = p;
-
-      for (curr->len = 0; curr->len < (st.st_size - pos); ++curr->len) {
-        if (p[curr->len] == 0x1f &&
-            p[curr->len+1] == 0x8b &&
-            p[curr->len+2] == 0x08 &&
-            p[curr->len+3] == 0x00) {
-          break;
-        }
-      }
-      pos += curr->len;
-    }
-  }
-
-  return img;
-}
-
-#define BUFFER_SIZE 32768
-
-/*
- * Takes the uncompressed data stored in the chunk, compresses it
- * using the zlib parameters stored in the chunk, and checks that it
- * matches exactly the compressed data we started with (also stored in
- * the chunk).  Return 0 on success.
- */
-int TryReconstruction(ImageChunk* chunk, unsigned char* out) {
-  size_t p = 0;
-
-#if 0
-  printf("trying %d %d %d %d %d\n",
-          chunk->level, chunk->method, chunk->windowBits,
-          chunk->memLevel, chunk->strategy);
-#endif
-
-  z_stream strm;
-  strm.zalloc = Z_NULL;
-  strm.zfree = Z_NULL;
-  strm.opaque = Z_NULL;
-  strm.avail_in = chunk->len;
-  strm.next_in = chunk->data;
-  int ret;
-  ret = deflateInit2(&strm, chunk->level, chunk->method, chunk->windowBits,
-                     chunk->memLevel, chunk->strategy);
-  do {
-    strm.avail_out = BUFFER_SIZE;
-    strm.next_out = out;
-    ret = deflate(&strm, Z_FINISH);
-    size_t have = BUFFER_SIZE - strm.avail_out;
-
-    if (memcmp(out, chunk->deflate_data+p, have) != 0) {
-      // mismatch; data isn't the same.
-      deflateEnd(&strm);
-      return -1;
-    }
-    p += have;
-  } while (ret != Z_STREAM_END);
-  deflateEnd(&strm);
-  if (p != chunk->deflate_len) {
-    // mismatch; ran out of data before we should have.
-    return -1;
-  }
-  return 0;
-}
-
-/*
- * Verify that we can reproduce exactly the same compressed data that
- * we started with.  Sets the level, method, windowBits, memLevel, and
- * strategy fields in the chunk to the encoding parameters needed to
- * produce the right output.  Returns 0 on success.
- */
-int ReconstructDeflateChunk(ImageChunk* chunk) {
-  if (chunk->type != CHUNK_DEFLATE) {
-    printf("attempt to reconstruct non-deflate chunk\n");
-    return -1;
-  }
-
-  size_t p = 0;
-  unsigned char* out = malloc(BUFFER_SIZE);
-
-  // We only check two combinations of encoder parameters:  level 6
-  // (the default) and level 9 (the maximum).
-  for (chunk->level = 6; chunk->level <= 9; chunk->level += 3) {
-    chunk->windowBits = -15;  // 32kb window; negative to indicate a raw stream.
-    chunk->memLevel = 8;      // the default value.
-    chunk->method = Z_DEFLATED;
-    chunk->strategy = Z_DEFAULT_STRATEGY;
-
-    if (TryReconstruction(chunk, out) == 0) {
-      free(out);
-      return 0;
-    }
-  }
-
-  free(out);
-  return -1;
-}
-
-/*
- * Given source and target chunks, compute a bsdiff patch between them
- * by running bsdiff in a subprocess.  Return the patch data, placing
- * its length in *size.  Return NULL on failure.  We expect the bsdiff
- * program to be in the path.
- */
-unsigned char* MakePatch(ImageChunk* src, ImageChunk* tgt, size_t* size) {
-  if (tgt->type == CHUNK_NORMAL) {
-    if (tgt->len <= 160) {
-      tgt->type = CHUNK_RAW;
-      *size = tgt->len;
-      return tgt->data;
-    }
-  }
-
-  char ptemp[] = "/tmp/imgdiff-patch-XXXXXX";
-  mkstemp(ptemp);
-
-  int r = bsdiff(src->data, src->len, &(src->I), tgt->data, tgt->len, ptemp);
-  if (r != 0) {
-    printf("bsdiff() failed: %d\n", r);
-    return NULL;
-  }
-
-  struct stat st;
-  if (stat(ptemp, &st) != 0) {
-    printf("failed to stat patch file %s: %s\n",
-            ptemp, strerror(errno));
-    return NULL;
-  }
-
-  unsigned char* data = malloc(st.st_size);
-
-  if (tgt->type == CHUNK_NORMAL && tgt->len <= st.st_size) {
-    unlink(ptemp);
-
-    tgt->type = CHUNK_RAW;
-    *size = tgt->len;
-    return tgt->data;
-  }
-
-  *size = st.st_size;
-
-  FILE* f = fopen(ptemp, "rb");
-  if (f == NULL) {
-    printf("failed to open patch %s: %s\n", ptemp, strerror(errno));
-    return NULL;
-  }
-  if (fread(data, 1, st.st_size, f) != st.st_size) {
-    printf("failed to read patch %s: %s\n", ptemp, strerror(errno));
-    return NULL;
-  }
-  fclose(f);
-
-  unlink(ptemp);
-
-  tgt->source_start = src->start;
-  switch (tgt->type) {
-    case CHUNK_NORMAL:
-      tgt->source_len = src->len;
-      break;
-    case CHUNK_DEFLATE:
-      tgt->source_len = src->deflate_len;
-      tgt->source_uncompressed_len = src->len;
-      break;
-  }
-
-  return data;
-}
-
-/*
- * Cause a gzip chunk to be treated as a normal chunk (ie, as a blob
- * of uninterpreted data).  The resulting patch will likely be about
- * as big as the target file, but it lets us handle the case of images
- * where some gzip chunks are reconstructible but others aren't (by
- * treating the ones that aren't as normal chunks).
- */
-void ChangeDeflateChunkToNormal(ImageChunk* ch) {
-  if (ch->type != CHUNK_DEFLATE) return;
-  ch->type = CHUNK_NORMAL;
-  free(ch->data);
-  ch->data = ch->deflate_data;
-  ch->len = ch->deflate_len;
-}
-
-/*
- * Return true if the data in the chunk is identical (including the
- * compressed representation, for gzip chunks).
- */
-int AreChunksEqual(ImageChunk* a, ImageChunk* b) {
-    if (a->type != b->type) return 0;
-
-    switch (a->type) {
-        case CHUNK_NORMAL:
-            return a->len == b->len && memcmp(a->data, b->data, a->len) == 0;
-
-        case CHUNK_DEFLATE:
-            return a->deflate_len == b->deflate_len &&
-                memcmp(a->deflate_data, b->deflate_data, a->deflate_len) == 0;
-
-        default:
-            printf("unknown chunk type %d\n", a->type);
-            return 0;
-    }
-}
-
-/*
- * Look for runs of adjacent normal chunks and compress them down into
- * a single chunk.  (Such runs can be produced when deflate chunks are
- * changed to normal chunks.)
- */
-void MergeAdjacentNormalChunks(ImageChunk* chunks, int* num_chunks) {
-  int out = 0;
-  int in_start = 0, in_end;
-  while (in_start < *num_chunks) {
-    if (chunks[in_start].type != CHUNK_NORMAL) {
-      in_end = in_start+1;
-    } else {
-      // in_start is a normal chunk.  Look for a run of normal chunks
-      // that constitute a solid block of data (ie, each chunk begins
-      // where the previous one ended).
-      for (in_end = in_start+1;
-           in_end < *num_chunks && chunks[in_end].type == CHUNK_NORMAL &&
-             (chunks[in_end].start ==
-              chunks[in_end-1].start + chunks[in_end-1].len &&
-              chunks[in_end].data ==
-              chunks[in_end-1].data + chunks[in_end-1].len);
-           ++in_end);
-    }
-
-    if (in_end == in_start+1) {
-#if 0
-      printf("chunk %d is now %d\n", in_start, out);
-#endif
-      if (out != in_start) {
-        memcpy(chunks+out, chunks+in_start, sizeof(ImageChunk));
-      }
-    } else {
-#if 0
-      printf("collapse normal chunks %d-%d into %d\n", in_start, in_end-1, out);
-#endif
-
-      // Merge chunks [in_start, in_end-1] into one chunk.  Since the
-      // data member of each chunk is just a pointer into an in-memory
-      // copy of the file, this can be done without recopying (the
-      // output chunk has the first chunk's start location and data
-      // pointer, and length equal to the sum of the input chunk
-      // lengths).
-      chunks[out].type = CHUNK_NORMAL;
-      chunks[out].start = chunks[in_start].start;
-      chunks[out].data = chunks[in_start].data;
-      chunks[out].len = chunks[in_end-1].len +
-        (chunks[in_end-1].start - chunks[in_start].start);
-    }
-
-    ++out;
-    in_start = in_end;
-  }
-  *num_chunks = out;
-}
-
-ImageChunk* FindChunkByName(const char* name,
-                            ImageChunk* chunks, int num_chunks) {
-  int i;
-  for (i = 0; i < num_chunks; ++i) {
-    if (chunks[i].type == CHUNK_DEFLATE && chunks[i].filename &&
-        strcmp(name, chunks[i].filename) == 0) {
-      return chunks+i;
-    }
-  }
-  return NULL;
-}
-
-void DumpChunks(ImageChunk* chunks, int num_chunks) {
-    int i;
-    for (i = 0; i < num_chunks; ++i) {
-        printf("chunk %d: type %d start %d len %d\n",
-               i, chunks[i].type, chunks[i].start, chunks[i].len);
-    }
-}
-
-int main(int argc, char** argv) {
-  if (argc != 4 && argc != 5) {
-    usage:
-    printf("usage: %s [-z] <src-img> <tgt-img> <patch-file>\n",
-            argv[0]);
-    return 2;
-  }
-
-  int zip_mode = 0;
-
-  if (strcmp(argv[1], "-z") == 0) {
-    zip_mode = 1;
-    --argc;
-    ++argv;
-  }
-
-
-  int num_src_chunks;
-  ImageChunk* src_chunks;
-  int num_tgt_chunks;
-  ImageChunk* tgt_chunks;
-  int i;
-
-  if (zip_mode) {
-    if (ReadZip(argv[1], &num_src_chunks, &src_chunks, 1) == NULL) {
-      printf("failed to break apart source zip file\n");
-      return 1;
-    }
-    if (ReadZip(argv[2], &num_tgt_chunks, &tgt_chunks, 0) == NULL) {
-      printf("failed to break apart target zip file\n");
-      return 1;
-    }
-  } else {
-    if (ReadImage(argv[1], &num_src_chunks, &src_chunks) == NULL) {
-      printf("failed to break apart source image\n");
-      return 1;
-    }
-    if (ReadImage(argv[2], &num_tgt_chunks, &tgt_chunks) == NULL) {
-      printf("failed to break apart target image\n");
-      return 1;
-    }
-
-    // Verify that the source and target images have the same chunk
-    // structure (ie, the same sequence of deflate and normal chunks).
-
-    if (!zip_mode) {
-        // Merge the gzip header and footer in with any adjacent
-        // normal chunks.
-        MergeAdjacentNormalChunks(tgt_chunks, &num_tgt_chunks);
-        MergeAdjacentNormalChunks(src_chunks, &num_src_chunks);
-    }
-
-    if (num_src_chunks != num_tgt_chunks) {
-      printf("source and target don't have same number of chunks!\n");
-      printf("source chunks:\n");
-      DumpChunks(src_chunks, num_src_chunks);
-      printf("target chunks:\n");
-      DumpChunks(tgt_chunks, num_tgt_chunks);
-      return 1;
-    }
-    for (i = 0; i < num_src_chunks; ++i) {
-      if (src_chunks[i].type != tgt_chunks[i].type) {
-        printf("source and target don't have same chunk "
-                "structure! (chunk %d)\n", i);
-        printf("source chunks:\n");
-        DumpChunks(src_chunks, num_src_chunks);
-        printf("target chunks:\n");
-        DumpChunks(tgt_chunks, num_tgt_chunks);
-        return 1;
-      }
-    }
-  }
-
-  for (i = 0; i < num_tgt_chunks; ++i) {
-    if (tgt_chunks[i].type == CHUNK_DEFLATE) {
-      // Confirm that given the uncompressed chunk data in the target, we
-      // can recompress it and get exactly the same bits as are in the
-      // input target image.  If this fails, treat the chunk as a normal
-      // non-deflated chunk.
-      if (ReconstructDeflateChunk(tgt_chunks+i) < 0) {
-        printf("failed to reconstruct target deflate chunk %d [%s]; "
-               "treating as normal\n", i, tgt_chunks[i].filename);
-        ChangeDeflateChunkToNormal(tgt_chunks+i);
-        if (zip_mode) {
-          ImageChunk* src = FindChunkByName(tgt_chunks[i].filename, src_chunks, num_src_chunks);
-          if (src) {
-            ChangeDeflateChunkToNormal(src);
-          }
-        } else {
-          ChangeDeflateChunkToNormal(src_chunks+i);
-        }
-        continue;
-      }
-
-      // If two deflate chunks are identical (eg, the kernel has not
-      // changed between two builds), treat them as normal chunks.
-      // This makes applypatch much faster -- it can apply a trivial
-      // patch to the compressed data, rather than uncompressing and
-      // recompressing to apply the trivial patch to the uncompressed
-      // data.
-      ImageChunk* src;
-      if (zip_mode) {
-        src = FindChunkByName(tgt_chunks[i].filename, src_chunks, num_src_chunks);
-      } else {
-        src = src_chunks+i;
-      }
-
-      if (src == NULL || AreChunksEqual(tgt_chunks+i, src)) {
-        ChangeDeflateChunkToNormal(tgt_chunks+i);
-        if (src) {
-          ChangeDeflateChunkToNormal(src);
-        }
-      }
-    }
-  }
-
-  // Merging neighboring normal chunks.
-  if (zip_mode) {
-    // For zips, we only need to do this to the target:  deflated
-    // chunks are matched via filename, and normal chunks are patched
-    // using the entire source file as the source.
-    MergeAdjacentNormalChunks(tgt_chunks, &num_tgt_chunks);
-  } else {
-    // For images, we need to maintain the parallel structure of the
-    // chunk lists, so do the merging in both the source and target
-    // lists.
-    MergeAdjacentNormalChunks(tgt_chunks, &num_tgt_chunks);
-    MergeAdjacentNormalChunks(src_chunks, &num_src_chunks);
-    if (num_src_chunks != num_tgt_chunks) {
-      // This shouldn't happen.
-      printf("merging normal chunks went awry\n");
-      return 1;
-    }
-  }
-
-  // Compute bsdiff patches for each chunk's data (the uncompressed
-  // data, in the case of deflate chunks).
-
-  printf("Construct patches for %d chunks...\n", num_tgt_chunks);
-  unsigned char** patch_data = malloc(num_tgt_chunks * sizeof(unsigned char*));
-  size_t* patch_size = malloc(num_tgt_chunks * sizeof(size_t));
-  for (i = 0; i < num_tgt_chunks; ++i) {
-    if (zip_mode) {
-      ImageChunk* src;
-      if (tgt_chunks[i].type == CHUNK_DEFLATE &&
-          (src = FindChunkByName(tgt_chunks[i].filename, src_chunks,
-                                 num_src_chunks))) {
-        patch_data[i] = MakePatch(src, tgt_chunks+i, patch_size+i);
-      } else {
-        patch_data[i] = MakePatch(src_chunks, tgt_chunks+i, patch_size+i);
-      }
-    } else {
-      patch_data[i] = MakePatch(src_chunks+i, tgt_chunks+i, patch_size+i);
-    }
-    printf("patch %3d is %d bytes (of %d)\n",
-           i, patch_size[i], tgt_chunks[i].source_len);
-  }
-
-  // Figure out how big the imgdiff file header is going to be, so
-  // that we can correctly compute the offset of each bsdiff patch
-  // within the file.
-
-  size_t total_header_size = 12;
-  for (i = 0; i < num_tgt_chunks; ++i) {
-    total_header_size += 4;
-    switch (tgt_chunks[i].type) {
-      case CHUNK_NORMAL:
-        total_header_size += 8*3;
-        break;
-      case CHUNK_DEFLATE:
-        total_header_size += 8*5 + 4*5;
-        break;
-      case CHUNK_RAW:
-        total_header_size += 4 + patch_size[i];
-        break;
-    }
-  }
-
-  size_t offset = total_header_size;
-
-  FILE* f = fopen(argv[3], "wb");
-
-  // Write out the headers.
-
-  fwrite("IMGDIFF2", 1, 8, f);
-  Write4(num_tgt_chunks, f);
-  for (i = 0; i < num_tgt_chunks; ++i) {
-    Write4(tgt_chunks[i].type, f);
-
-    switch (tgt_chunks[i].type) {
-      case CHUNK_NORMAL:
-        printf("chunk %3d: normal   (%10d, %10d)  %10d\n", i,
-               tgt_chunks[i].start, tgt_chunks[i].len, patch_size[i]);
-        Write8(tgt_chunks[i].source_start, f);
-        Write8(tgt_chunks[i].source_len, f);
-        Write8(offset, f);
-        offset += patch_size[i];
-        break;
-
-      case CHUNK_DEFLATE:
-        printf("chunk %3d: deflate  (%10d, %10d)  %10d  %s\n", i,
-               tgt_chunks[i].start, tgt_chunks[i].deflate_len, patch_size[i],
-               tgt_chunks[i].filename);
-        Write8(tgt_chunks[i].source_start, f);
-        Write8(tgt_chunks[i].source_len, f);
-        Write8(offset, f);
-        Write8(tgt_chunks[i].source_uncompressed_len, f);
-        Write8(tgt_chunks[i].len, f);
-        Write4(tgt_chunks[i].level, f);
-        Write4(tgt_chunks[i].method, f);
-        Write4(tgt_chunks[i].windowBits, f);
-        Write4(tgt_chunks[i].memLevel, f);
-        Write4(tgt_chunks[i].strategy, f);
-        offset += patch_size[i];
-        break;
-
-      case CHUNK_RAW:
-        printf("chunk %3d: raw      (%10d, %10d)\n", i,
-               tgt_chunks[i].start, tgt_chunks[i].len);
-        Write4(patch_size[i], f);
-        fwrite(patch_data[i], 1, patch_size[i], f);
-        break;
-    }
-  }
-
-  // Append each chunk's bsdiff patch, in order.
-
-  for (i = 0; i < num_tgt_chunks; ++i) {
-    if (tgt_chunks[i].type != CHUNK_RAW) {
-      fwrite(patch_data[i], 1, patch_size[i], f);
-    }
-  }
-
-  fclose(f);
-
-  return 0;
-}
diff --git a/tools/applypatch/imgdiff.h b/tools/applypatch/imgdiff.h
deleted file mode 100644
index f2069b4..0000000
--- a/tools/applypatch/imgdiff.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2009 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// Image patch chunk types
-#define CHUNK_NORMAL   0
-#define CHUNK_GZIP     1   // version 1 only
-#define CHUNK_DEFLATE  2   // version 2 only
-#define CHUNK_RAW      3   // version 2 only
-
-// The gzip header size is actually variable, but we currently don't
-// support gzipped data with any of the optional fields, so for now it
-// will always be ten bytes.  See RFC 1952 for the definition of the
-// gzip format.
-#define GZIP_HEADER_LEN   10
-
-// The gzip footer size really is fixed.
-#define GZIP_FOOTER_LEN   8
diff --git a/tools/applypatch/imgdiff_test.sh b/tools/applypatch/imgdiff_test.sh
deleted file mode 100755
index dcdb922..0000000
--- a/tools/applypatch/imgdiff_test.sh
+++ /dev/null
@@ -1,118 +0,0 @@
-#!/bin/bash
-#
-# A script for testing imgdiff/applypatch.  It takes two full OTA
-# packages as arguments.  It generates (on the host) patches for all
-# the zip/jar/apk files they have in common, as well as boot and
-# recovery images.  It then applies the patches on the device (or
-# emulator) and checks that the resulting file is correct.
-
-EMULATOR_PORT=5580
-
-# set to 0 to use a device instead
-USE_EMULATOR=0
-
-# where on the device to do all the patching.
-WORK_DIR=/data/local/tmp
-
-START_OTA_PACKAGE=$1
-END_OTA_PACKAGE=$2
-
-# ------------------------
-
-tmpdir=$(mktemp -d)
-
-if [ "$USE_EMULATOR" == 1 ]; then
-  emulator -wipe-data -noaudio -no-window -port $EMULATOR_PORT &
-  pid_emulator=$!
-  ADB="adb -s emulator-$EMULATOR_PORT "
-else
-  ADB="adb -d "
-fi
-
-echo "waiting to connect to device"
-$ADB wait-for-device
-
-# run a command on the device; exit with the exit status of the device
-# command.
-run_command() {
-  $ADB shell "$@" \; echo \$? | awk '{if (b) {print a}; a=$0; b=1} END {exit a}'
-}
-
-testname() {
-  echo
-  echo "$1"...
-  testname="$1"
-}
-
-fail() {
-  echo
-  echo FAIL: $testname
-  echo
-  [ "$open_pid" == "" ] || kill $open_pid
-  [ "$pid_emulator" == "" ] || kill $pid_emulator
-  exit 1
-}
-
-sha1() {
-  sha1sum $1 | awk '{print $1}'
-}
-
-size() {
-  stat -c %s $1 | tr -d '\n'
-}
-
-cleanup() {
-  # not necessary if we're about to kill the emulator, but nice for
-  # running on real devices or already-running emulators.
-  testname "removing test files"
-  run_command rm $WORK_DIR/applypatch
-  run_command rm $WORK_DIR/source
-  run_command rm $WORK_DIR/target
-  run_command rm $WORK_DIR/patch
-
-  [ "$pid_emulator" == "" ] || kill $pid_emulator
-
-  rm -rf $tmpdir
-}
-
-$ADB push $ANDROID_PRODUCT_OUT/system/bin/applypatch $WORK_DIR/applypatch
-
-patch_and_apply() {
-  local fn=$1
-  shift
-
-  unzip -p $START_OTA_PACKAGE $fn > $tmpdir/source
-  unzip -p $END_OTA_PACKAGE $fn > $tmpdir/target
-  imgdiff "$@" $tmpdir/source $tmpdir/target $tmpdir/patch
-  bsdiff $tmpdir/source $tmpdir/target $tmpdir/patch.bs
-  echo "patch for $fn is $(size $tmpdir/patch) [of $(size $tmpdir/target)] ($(size $tmpdir/patch.bs) with bsdiff)"
-  echo "$fn $(size $tmpdir/patch) of $(size $tmpdir/target) bsdiff $(size $tmpdir/patch.bs)" >> /tmp/stats.txt
-  $ADB push $tmpdir/source $WORK_DIR/source || fail "source push failed"
-  run_command rm /data/local/tmp/target
-  $ADB push $tmpdir/patch $WORK_DIR/patch || fail "patch push failed"
-  run_command /data/local/tmp/applypatch /data/local/tmp/source \
-    /data/local/tmp/target $(sha1 $tmpdir/target) $(size $tmpdir/target) \
-    $(sha1 $tmpdir/source):/data/local/tmp/patch \
-    || fail "applypatch of $fn failed"
-  $ADB pull /data/local/tmp/target $tmpdir/result
-  diff -q $tmpdir/target $tmpdir/result || fail "patch output not correct!"
-}
-
-# --------------- basic execution ----------------------
-
-for i in $((zipinfo -1 $START_OTA_PACKAGE; zipinfo -1 $END_OTA_PACKAGE) | \
-           sort | uniq -d | egrep -e '[.](apk|jar|zip)$'); do
-  patch_and_apply $i -z
-done
-patch_and_apply boot.img
-patch_and_apply system/recovery.img
-
-
-# --------------- cleanup ----------------------
-
-cleanup
-
-echo
-echo PASS
-echo
-
diff --git a/tools/applypatch/imgpatch.c b/tools/applypatch/imgpatch.c
deleted file mode 100644
index 5322817..0000000
--- a/tools/applypatch/imgpatch.c
+++ /dev/null
@@ -1,364 +0,0 @@
-/*
- * Copyright (C) 2009 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// See imgdiff.c in this directory for a description of the patch file
-// format.
-
-#include <stdio.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <unistd.h>
-#include <string.h>
-
-#include "zlib.h"
-#include "mincrypt/sha.h"
-#include "applypatch.h"
-#include "imgdiff.h"
-#include "utils.h"
-
-/*
- * Apply the patch given in 'patch_filename' to the source data given
- * by (old_data, old_size).  Write the patched output to the 'output'
- * file, and update the SHA context with the output data as well.
- * Return 0 on success.
- */
-int ApplyImagePatch(const unsigned char* old_data, ssize_t old_size,
-                    const char* patch_filename,
-                    SinkFn sink, void* token, SHA_CTX* ctx) {
-  FILE* f;
-  if ((f = fopen(patch_filename, "rb")) == NULL) {
-    printf("failed to open patch file\n");
-    return -1;
-  }
-
-  unsigned char header[12];
-  if (fread(header, 1, 12, f) != 12) {
-    printf("failed to read patch file header\n");
-    return -1;
-  }
-
-  // IMGDIFF1 uses CHUNK_NORMAL and CHUNK_GZIP.
-  // IMGDIFF2 uses CHUNK_NORMAL, CHUNK_DEFLATE, and CHUNK_RAW.
-  if (memcmp(header, "IMGDIFF", 7) != 0 ||
-      (header[7] != '1' && header[7] != '2')) {
-    printf("corrupt patch file header (magic number)\n");
-    return -1;
-  }
-
-  int num_chunks = Read4(header+8);
-
-  int i;
-  for (i = 0; i < num_chunks; ++i) {
-    // each chunk's header record starts with 4 bytes.
-    unsigned char chunk[4];
-    if (fread(chunk, 1, 4, f) != 4) {
-      printf("failed to read chunk %d record\n", i);
-      return -1;
-    }
-
-    int type = Read4(chunk);
-
-    if (type == CHUNK_NORMAL) {
-      unsigned char normal_header[24];
-      if (fread(normal_header, 1, 24, f) != 24) {
-        printf("failed to read chunk %d normal header data\n", i);
-        return -1;
-      }
-
-      size_t src_start = Read8(normal_header);
-      size_t src_len = Read8(normal_header+8);
-      size_t patch_offset = Read8(normal_header+16);
-
-      printf("CHUNK %d:  normal   patch offset %d\n", i, patch_offset);
-
-      ApplyBSDiffPatch(old_data + src_start, src_len,
-                       patch_filename, patch_offset,
-                       sink, token, ctx);
-    } else if (type == CHUNK_GZIP) {
-      // This branch is basically a duplicate of the CHUNK_DEFLATE
-      // branch, with a bit of extra processing for the gzip header
-      // and footer.  I've avoided factoring the common code out since
-      // this branch will just be deleted when we drop support for
-      // IMGDIFF1.
-
-      // gzip chunks have an additional 64 + gzip_header_len + 8 bytes
-      // in their chunk header.
-      unsigned char* gzip = malloc(64);
-      if (fread(gzip, 1, 64, f) != 64) {
-        printf("failed to read chunk %d initial gzip header data\n",
-                i);
-        return -1;
-      }
-      size_t gzip_header_len = Read4(gzip+60);
-      gzip = realloc(gzip, 64 + gzip_header_len + 8);
-      if (fread(gzip+64, 1, gzip_header_len+8, f) != gzip_header_len+8) {
-        printf("failed to read chunk %d remaining gzip header data\n",
-                i);
-        return -1;
-      }
-
-      size_t src_start = Read8(gzip);
-      size_t src_len = Read8(gzip+8);
-      size_t patch_offset = Read8(gzip+16);
-
-      size_t expanded_len = Read8(gzip+24);
-      size_t target_len = Read8(gzip+32);
-      int gz_level = Read4(gzip+40);
-      int gz_method = Read4(gzip+44);
-      int gz_windowBits = Read4(gzip+48);
-      int gz_memLevel = Read4(gzip+52);
-      int gz_strategy = Read4(gzip+56);
-
-      printf("CHUNK %d:  gzip     patch offset %d\n", i, patch_offset);
-
-      // Decompress the source data; the chunk header tells us exactly
-      // how big we expect it to be when decompressed.
-
-      unsigned char* expanded_source = malloc(expanded_len);
-      if (expanded_source == NULL) {
-        printf("failed to allocate %d bytes for expanded_source\n",
-                expanded_len);
-        return -1;
-      }
-
-      z_stream strm;
-      strm.zalloc = Z_NULL;
-      strm.zfree = Z_NULL;
-      strm.opaque = Z_NULL;
-      strm.avail_in = src_len - (gzip_header_len + 8);
-      strm.next_in = (unsigned char*)(old_data + src_start + gzip_header_len);
-      strm.avail_out = expanded_len;
-      strm.next_out = expanded_source;
-
-      int ret;
-      ret = inflateInit2(&strm, -15);
-      if (ret != Z_OK) {
-        printf("failed to init source inflation: %d\n", ret);
-        return -1;
-      }
-
-      // Because we've provided enough room to accommodate the output
-      // data, we expect one call to inflate() to suffice.
-      ret = inflate(&strm, Z_SYNC_FLUSH);
-      if (ret != Z_STREAM_END) {
-        printf("source inflation returned %d\n", ret);
-        return -1;
-      }
-      // We should have filled the output buffer exactly.
-      if (strm.avail_out != 0) {
-        printf("source inflation short by %d bytes\n", strm.avail_out);
-        return -1;
-      }
-      inflateEnd(&strm);
-
-      // Next, apply the bsdiff patch (in memory) to the uncompressed
-      // data.
-      unsigned char* uncompressed_target_data;
-      ssize_t uncompressed_target_size;
-      if (ApplyBSDiffPatchMem(expanded_source, expanded_len,
-                              patch_filename, patch_offset,
-                              &uncompressed_target_data,
-                              &uncompressed_target_size) != 0) {
-        return -1;
-      }
-
-      // Now compress the target data and append it to the output.
-
-      // start with the gzip header.
-      sink(gzip+64, gzip_header_len, token);
-      SHA_update(ctx, gzip+64, gzip_header_len);
-
-      // we're done with the expanded_source data buffer, so we'll
-      // reuse that memory to receive the output of deflate.
-      unsigned char* temp_data = expanded_source;
-      ssize_t temp_size = expanded_len;
-      if (temp_size < 32768) {
-        // ... unless the buffer is too small, in which case we'll
-        // allocate a fresh one.
-        free(temp_data);
-        temp_data = malloc(32768);
-        temp_size = 32768;
-      }
-
-      // now the deflate stream
-      strm.zalloc = Z_NULL;
-      strm.zfree = Z_NULL;
-      strm.opaque = Z_NULL;
-      strm.avail_in = uncompressed_target_size;
-      strm.next_in = uncompressed_target_data;
-      ret = deflateInit2(&strm, gz_level, gz_method, gz_windowBits,
-                         gz_memLevel, gz_strategy);
-      do {
-        strm.avail_out = temp_size;
-        strm.next_out = temp_data;
-        ret = deflate(&strm, Z_FINISH);
-        size_t have = temp_size - strm.avail_out;
-
-        if (sink(temp_data, have, token) != have) {
-          printf("failed to write %d compressed bytes to output\n",
-                  have);
-          return -1;
-        }
-        SHA_update(ctx, temp_data, have);
-      } while (ret != Z_STREAM_END);
-      deflateEnd(&strm);
-
-      // lastly, the gzip footer.
-      sink(gzip+64+gzip_header_len, 8, token);
-      SHA_update(ctx, gzip+64+gzip_header_len, 8);
-
-      free(temp_data);
-      free(uncompressed_target_data);
-      free(gzip);
-    } else if (type == CHUNK_RAW) {
-      unsigned char raw_header[4];
-      if (fread(raw_header, 1, 4, f) != 4) {
-        printf("failed to read chunk %d raw header data\n", i);
-        return -1;
-      }
-
-      size_t data_len = Read4(raw_header);
-
-      printf("CHUNK %d:  raw      data %d\n", i, data_len);
-
-      unsigned char* temp = malloc(data_len);
-      if (fread(temp, 1, data_len, f) != data_len) {
-          printf("failed to read chunk %d raw data\n", i);
-          return -1;
-      }
-      SHA_update(ctx, temp, data_len);
-      if (sink(temp, data_len, token) != data_len) {
-          printf("failed to write chunk %d raw data\n", i);
-          return -1;
-      }
-    } else if (type == CHUNK_DEFLATE) {
-      // deflate chunks have an additional 60 bytes in their chunk header.
-      unsigned char deflate_header[60];
-      if (fread(deflate_header, 1, 60, f) != 60) {
-        printf("failed to read chunk %d deflate header data\n", i);
-        return -1;
-      }
-
-      size_t src_start = Read8(deflate_header);
-      size_t src_len = Read8(deflate_header+8);
-      size_t patch_offset = Read8(deflate_header+16);
-      size_t expanded_len = Read8(deflate_header+24);
-      size_t target_len = Read8(deflate_header+32);
-      int level = Read4(deflate_header+40);
-      int method = Read4(deflate_header+44);
-      int windowBits = Read4(deflate_header+48);
-      int memLevel = Read4(deflate_header+52);
-      int strategy = Read4(deflate_header+56);
-
-      printf("CHUNK %d:  deflate  patch offset %d\n", i, patch_offset);
-
-      // Decompress the source data; the chunk header tells us exactly
-      // how big we expect it to be when decompressed.
-
-      unsigned char* expanded_source = malloc(expanded_len);
-      if (expanded_source == NULL) {
-        printf("failed to allocate %d bytes for expanded_source\n",
-                expanded_len);
-        return -1;
-      }
-
-      z_stream strm;
-      strm.zalloc = Z_NULL;
-      strm.zfree = Z_NULL;
-      strm.opaque = Z_NULL;
-      strm.avail_in = src_len;
-      strm.next_in = (unsigned char*)(old_data + src_start);
-      strm.avail_out = expanded_len;
-      strm.next_out = expanded_source;
-
-      int ret;
-      ret = inflateInit2(&strm, -15);
-      if (ret != Z_OK) {
-        printf("failed to init source inflation: %d\n", ret);
-        return -1;
-      }
-
-      // Because we've provided enough room to accommodate the output
-      // data, we expect one call to inflate() to suffice.
-      ret = inflate(&strm, Z_SYNC_FLUSH);
-      if (ret != Z_STREAM_END) {
-        printf("source inflation returned %d\n", ret);
-        return -1;
-      }
-      // We should have filled the output buffer exactly.
-      if (strm.avail_out != 0) {
-        printf("source inflation short by %d bytes\n", strm.avail_out);
-        return -1;
-      }
-      inflateEnd(&strm);
-
-      // Next, apply the bsdiff patch (in memory) to the uncompressed
-      // data.
-      unsigned char* uncompressed_target_data;
-      ssize_t uncompressed_target_size;
-      if (ApplyBSDiffPatchMem(expanded_source, expanded_len,
-                              patch_filename, patch_offset,
-                              &uncompressed_target_data,
-                              &uncompressed_target_size) != 0) {
-        return -1;
-      }
-
-      // Now compress the target data and append it to the output.
-
-      // we're done with the expanded_source data buffer, so we'll
-      // reuse that memory to receive the output of deflate.
-      unsigned char* temp_data = expanded_source;
-      ssize_t temp_size = expanded_len;
-      if (temp_size < 32768) {
-        // ... unless the buffer is too small, in which case we'll
-        // allocate a fresh one.
-        free(temp_data);
-        temp_data = malloc(32768);
-        temp_size = 32768;
-      }
-
-      // now the deflate stream
-      strm.zalloc = Z_NULL;
-      strm.zfree = Z_NULL;
-      strm.opaque = Z_NULL;
-      strm.avail_in = uncompressed_target_size;
-      strm.next_in = uncompressed_target_data;
-      ret = deflateInit2(&strm, level, method, windowBits, memLevel, strategy);
-      do {
-        strm.avail_out = temp_size;
-        strm.next_out = temp_data;
-        ret = deflate(&strm, Z_FINISH);
-        size_t have = temp_size - strm.avail_out;
-
-        if (sink(temp_data, have, token) != have) {
-          printf("failed to write %d compressed bytes to output\n",
-                  have);
-          return -1;
-        }
-        SHA_update(ctx, temp_data, have);
-      } while (ret != Z_STREAM_END);
-      deflateEnd(&strm);
-
-      free(temp_data);
-      free(uncompressed_target_data);
-    } else {
-      printf("patch chunk %d is unknown type %d\n", i, type);
-      return -1;
-    }
-  }
-
-  return 0;
-}
diff --git a/tools/applypatch/main.c b/tools/applypatch/main.c
deleted file mode 100644
index e08f5c1..0000000
--- a/tools/applypatch/main.c
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (C) 2009 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stdio.h>
-
-extern int applypatch(int argc, char** argv);
-
-// This program applies binary patches to files in a way that is safe
-// (the original file is not touched until we have the desired
-// replacement for it) and idempotent (it's okay to run this program
-// multiple times).
-//
-// - if the sha1 hash of <tgt-file> is <tgt-sha1>, does nothing and exits
-//   successfully.
-//
-// - otherwise, if the sha1 hash of <src-file> is <src-sha1>, applies the
-//   bsdiff <patch> to <src-file> to produce a new file (the type of patch
-//   is automatically detected from the file header).  If that new
-//   file has sha1 hash <tgt-sha1>, moves it to replace <tgt-file>, and
-//   exits successfully.  Note that if <src-file> and <tgt-file> are
-//   not the same, <src-file> is NOT deleted on success.  <tgt-file>
-//   may be the string "-" to mean "the same as src-file".
-//
-// - otherwise, or if any error is encountered, exits with non-zero
-//   status.
-//
-// <src-file> (or <file> in check mode) may refer to an MTD partition
-// to read the source data.  See the comments for the
-// LoadMTDContents() function above for the format of such a filename.
-
-int main(int argc, char** argv) {
-  int result = applypatch(argc, argv);
-  if (result == 2) {
-    printf(
-            "usage: %s <src-file> <tgt-file> <tgt-sha1> <tgt-size> "
-            "[<src-sha1>:<patch> ...]\n"
-            "   or  %s -c <file> [<sha1> ...]\n"
-            "   or  %s -s <bytes>\n"
-            "   or  %s -l\n"
-            "\n"
-            "Filenames may be of the form\n"
-            "  MTD:<partition>:<len_1>:<sha1_1>:<len_2>:<sha1_2>:...\n"
-            "to specify reading from or writing to an MTD partition.\n\n",
-            argv[0], argv[0], argv[0], argv[0]);
-  }
-  return result;
-}
diff --git a/tools/applypatch/testdata/new.file b/tools/applypatch/testdata/new.file
deleted file mode 100644
index cdeb8fd..0000000
--- a/tools/applypatch/testdata/new.file
+++ /dev/null
Binary files differ
diff --git a/tools/applypatch/testdata/old.file b/tools/applypatch/testdata/old.file
deleted file mode 100644
index 166c873..0000000
--- a/tools/applypatch/testdata/old.file
+++ /dev/null
Binary files differ
diff --git a/tools/applypatch/testdata/patch.bsdiff b/tools/applypatch/testdata/patch.bsdiff
deleted file mode 100644
index b78d385..0000000
--- a/tools/applypatch/testdata/patch.bsdiff
+++ /dev/null
Binary files differ
diff --git a/tools/applypatch/utils.c b/tools/applypatch/utils.c
deleted file mode 100644
index 912229b..0000000
--- a/tools/applypatch/utils.c
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (C) 2009 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stdio.h>
-
-#include "utils.h"
-
-/** Write a 4-byte value to f in little-endian order. */
-void Write4(int value, FILE* f) {
-  fputc(value & 0xff, f);
-  fputc((value >> 8) & 0xff, f);
-  fputc((value >> 16) & 0xff, f);
-  fputc((value >> 24) & 0xff, f);
-}
-
-/** Write an 8-byte value to f in little-endian order. */
-void Write8(long long value, FILE* f) {
-  fputc(value & 0xff, f);
-  fputc((value >> 8) & 0xff, f);
-  fputc((value >> 16) & 0xff, f);
-  fputc((value >> 24) & 0xff, f);
-  fputc((value >> 32) & 0xff, f);
-  fputc((value >> 40) & 0xff, f);
-  fputc((value >> 48) & 0xff, f);
-  fputc((value >> 56) & 0xff, f);
-}
-
-int Read2(unsigned char* p) {
-  return (int)(((unsigned int)p[1] << 8) |
-               (unsigned int)p[0]);
-}
-
-int Read4(unsigned char* p) {
-  return (int)(((unsigned int)p[3] << 24) |
-               ((unsigned int)p[2] << 16) |
-               ((unsigned int)p[1] << 8) |
-               (unsigned int)p[0]);
-}
-
-long long Read8(unsigned char* p) {
-  return (long long)(((unsigned long long)p[7] << 56) |
-                     ((unsigned long long)p[6] << 48) |
-                     ((unsigned long long)p[5] << 40) |
-                     ((unsigned long long)p[4] << 32) |
-                     ((unsigned long long)p[3] << 24) |
-                     ((unsigned long long)p[2] << 16) |
-                     ((unsigned long long)p[1] << 8) |
-                     (unsigned long long)p[0]);
-}
diff --git a/tools/applypatch/utils.h b/tools/applypatch/utils.h
deleted file mode 100644
index d6d6f1d..0000000
--- a/tools/applypatch/utils.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2009 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef _BUILD_TOOLS_APPLYPATCH_UTILS_H
-#define _BUILD_TOOLS_APPLYPATCH_UTILS_H
-
-#include <stdio.h>
-
-// Read and write little-endian values of various sizes.
-
-void Write4(int value, FILE* f);
-void Write8(long long value, FILE* f);
-int Read2(unsigned char* p);
-int Read4(unsigned char* p);
-long long Read8(unsigned char* p);
-
-#endif //  _BUILD_TOOLS_APPLYPATCH_UTILS_H
diff --git a/tools/releasetools/edify_generator.py b/tools/releasetools/edify_generator.py
index 64bd547..900bad1 100644
--- a/tools/releasetools/edify_generator.py
+++ b/tools/releasetools/edify_generator.py
@@ -113,7 +113,7 @@
   def PatchCheck(self, filename, *sha1):
     """Check that the given file (or MTD reference) has one of the
     given *sha1 hashes."""
-    self.script.append('assert(apply_patch_check("%s"' % (filename,) +
+    self.script.append('assert(sha1_check(read_file("%s")' % (filename,) +
                        "".join([', "%s"' % (i,) for i in sha1]) +
                        '));')
 
diff --git a/tools/releasetools/ota_from_target_files b/tools/releasetools/ota_from_target_files
index 920ce8f..1e3f9a3 100755
--- a/tools/releasetools/ota_from_target_files
+++ b/tools/releasetools/ota_from_target_files
@@ -627,7 +627,7 @@
       verbatim_targets.append((tf.name, tf.size))
     else:
       common.ZipWriteStr(output_zip, "patch/" + tf.name + ".p", d)
-      patch_list.append((tf.name, tf, sf, tf.size))
+      patch_list.append((tf.name, tf, sf, tf.size, sha.sha(d).hexdigest()))
       largest_source_size = max(largest_source_size, sf.size)
 
   source_fp = GetBuildProp("ro.build.fingerprint", source_zip)
@@ -669,7 +669,7 @@
     total_verify_size += source_boot.size
   so_far = 0
 
-  for fn, tf, sf, size in patch_list:
+  for fn, tf, sf, size, patch_sha in patch_list:
     script.PatchCheck("/"+fn, tf.sha1, sf.sha1)
     so_far += sf.size
     script.SetProgress(so_far / total_verify_size)
@@ -693,6 +693,9 @@
     script.Print("Unpacking patches...")
     script.UnpackPackageDir("patch", "/tmp/patchtmp")
 
+    for fn, tf, sf, size, patch_sha in patch_list:
+      script.PatchCheck("/tmp/patchtmp/" + tf.name + ".p", patch_sha)
+
   device_specific.IncrementalOTA_VerifyEnd()
 
   script.Comment("---- start making changes here ----")
@@ -714,7 +717,7 @@
   so_far = 0
 
   script.Print("Patching system files...")
-  for fn, tf, sf, size in patch_list:
+  for fn, tf, sf, size, _ in patch_list:
     script.ApplyPatch("/"+fn, "-", tf.size, tf.sha1,
                       sf.sha1, "/tmp/patchtmp/"+fn+".p")
     so_far += tf.size