a3ccba6d31
The bonus data option lets you give an additional blob of uncompressed data to be used when constructing a patch for chunk #1 of an image. The same blob must be available at patch time, and can be passed to the command-line applypatch tool (this feature is not accessible from edify scripts). This will be used to reduce the size of recovery-from-boot patches by storing parts of the recovery ramdisk (the UI images) on the system partition. Change-Id: Iac1959cdf7f5e4582f8d434e83456e483b64c02c
89 lines
3 KiB
C
89 lines
3 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"
|
|
#include "minelf/Retouch.h"
|
|
#include "edify/expr.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;
|
|
ssize_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 ssize_t (*SinkFn)(unsigned char*, ssize_t, void*);
|
|
|
|
// applypatch.c
|
|
int ShowLicenses();
|
|
size_t FreeSpaceForFile(const char* filename);
|
|
int CacheSizeCheck(size_t bytes);
|
|
int ParseSha1(const char* str, uint8_t* digest);
|
|
|
|
int applypatch(const char* source_filename,
|
|
const char* target_filename,
|
|
const char* target_sha1_str,
|
|
size_t target_size,
|
|
int num_patches,
|
|
char** const patch_sha1_str,
|
|
Value** patch_data,
|
|
Value* bonus_data);
|
|
int applypatch_check(const char* filename,
|
|
int num_patches,
|
|
char** const patch_sha1_str);
|
|
|
|
int LoadFileContents(const char* filename, FileContents* file,
|
|
int retouch_flag);
|
|
int SaveFileContents(const char* filename, const FileContents* file);
|
|
void FreeFileContents(FileContents* file);
|
|
int FindMatchingPatch(uint8_t* sha1, const char** patch_sha1_str,
|
|
int num_patches);
|
|
|
|
// bsdiff.c
|
|
void ShowBSDiffLicense();
|
|
int ApplyBSDiffPatch(const unsigned char* old_data, ssize_t old_size,
|
|
const Value* patch, ssize_t patch_offset,
|
|
SinkFn sink, void* token, SHA_CTX* ctx);
|
|
int ApplyBSDiffPatchMem(const unsigned char* old_data, ssize_t old_size,
|
|
const Value* patch, 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 Value* patch,
|
|
SinkFn sink, void* token, SHA_CTX* ctx,
|
|
const Value* bonus_data);
|
|
|
|
// freecache.c
|
|
int MakeFreeSpaceOnCache(size_t bytes_needed);
|
|
|
|
#endif
|