6c770467fb
Make some changes needed to applypatch in order to store the recovery
image in the system partition as a binary patch relative to the boot
image:
- make applypatch use shared libraries, so it's smaller. It will
need to be on the main system so it can install the recovery
image. Make an applypatch_static binary for use in recovery
packages (still needed for updating cupcake devices to donut).
- output the results of patching to an in-memory buffer and write
that to the partition; there's no convenient /tmp for us to us.
(This should be basically a no-op in recovery, since /tmp is a
ramdisk anyway.)
65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
/*
|
|
* 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
|