db314d69f0
Separate files for retouch functionality are in minelf/* ASLR for shared libraries is controlled by "-a" in ota_from_target_files. Binary files are self-contained. Retouch logic can recover from crashes. Signed-off-by: Hristo Bojinov <hristo@google.com> Change-Id: I76c596abf4febd68c14f9d807ac62e8751e0b1bd
52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _MINELF_RETOUCH
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#define _MINELF_RETOUCH
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#include <stdbool.h>
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#include <sys/types.h>
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typedef struct {
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char tag[8]; /* "RETOUCH ", not zero-terminated */
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uint32_t blob_size; /* in bytes, located right before this struct */
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} retouch_info_t __attribute__((packed));
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// Retouch a file. Use CACHED_SOURCE_TEMP to store a copy.
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bool retouch_one_library(const char *binary_name,
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const char *binary_sha1,
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int32_t retouch_offset,
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int32_t *retouch_offset_override);
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#define RETOUCH_DONT_MASK 0
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#define RETOUCH_DO_MASK 1
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#define RETOUCH_DATA_ERROR 0 // This is bad. Should not happen.
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#define RETOUCH_DATA_MATCHED 1 // Up to an uniform random offset.
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#define RETOUCH_DATA_MISMATCHED 2 // Partially randomized, or total mess.
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#define RETOUCH_DATA_NOTAPPLICABLE 3 // Not retouched. Only when inferring.
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// Mask retouching in-memory. Used before apply_patch[_check].
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// Also used to determine status of retouching after a crash.
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//
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// If desired_offset is not NULL, then apply retouching instead,
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// and return that in retouch_offset.
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int retouch_mask_data(uint8_t *binary_object,
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int32_t binary_size,
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int32_t *desired_offset,
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int32_t *retouch_offset);
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#endif
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