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author | Doug Zongker <dougz@android.com> | 2010-02-17 16:11:44 -0800 |
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committer | Doug Zongker <dougz@android.com> | 2010-02-18 14:22:12 -0800 |
commit | 512536a54a1a211a9f582e76cbf12850dc7d5466 (patch) | |
tree | 724012f5ea1a3053adecb512baf342490bb94d02 /applypatch/applypatch.h | |
parent | 21854ccdb250e6e81311b4317934e8c953b252a8 (diff) | |
download | bootable_recovery-512536a54a1a211a9f582e76cbf12850dc7d5466.zip bootable_recovery-512536a54a1a211a9f582e76cbf12850dc7d5466.tar.gz bootable_recovery-512536a54a1a211a9f582e76cbf12850dc7d5466.tar.bz2 |
relocate applypatch; add type system and new functions to edify
- Move applypatch to this package (from build).
- Add a rudimentary type system to edify: instead of just returning a
char*, functions now return a Value*, which is a struct that can
carry different types of value (currently just STRING and BLOB).
Convert all functions to this new scheme.
- Change the one-argument form of package_extract_file to return a
Value of the new BLOB type.
- Add read_file() to load a local file and return a blob, and
sha1_check() to test a blob (or string) against a set of possible
sha1s. read_file() uses the file-loading code from applypatch so it
can read MTD partitions as well.
This is the start of better integration between applypatch and the
rest of edify.
b/2361316 - VZW Issue PP628: Continuous reset to Droid logo:
framework-res.apk update failed (CR LIBtt59130)
Change-Id: Ibd038074749a4d515de1f115c498c6c589ee91e5
Diffstat (limited to 'applypatch/applypatch.h')
-rw-r--r-- | applypatch/applypatch.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/applypatch/applypatch.h b/applypatch/applypatch.h new file mode 100644 index 0000000..3cb8021 --- /dev/null +++ b/applypatch/applypatch.h @@ -0,0 +1,70 @@ +/* + * 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; + 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 +size_t FreeSpaceForFile(const char* filename); +int applypatch(int argc, char** argv); + +// Read a file into memory; store it and its associated metadata in +// *file. Return 0 on success. +int LoadFileContents(const char* filename, FileContents* file); +void FreeFileContents(FileContents* file); + +// 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 |