1 files changed, 0 insertions, 203 deletions

diff --git a/otautil/SysUtil.cpp b/otautil/SysUtil.cpp
deleted file mode 100644
index 48336ad07..000000000
--- a/otautil/SysUtil.cpp
+++ /dev/null
@@ -1,203 +0,0 @@
-/*
- * Copyright 2006 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 "otautil/SysUtil.h"
-
-#include <errno.h>  // TEMP_FAILURE_RETRY
-#include <fcntl.h>
-#include <stdint.h>  // SIZE_MAX
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include <string>
-#include <vector>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/strings.h>
-#include <android-base/unique_fd.h>
-
-bool MemMapping::MapFD(int fd) {
-  struct stat sb;
-  if (fstat(fd, &sb) == -1) {
-    PLOG(ERROR) << "fstat(" << fd << ") failed";
-    return false;
-  }
-
-  void* memPtr = mmap(nullptr, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
-  if (memPtr == MAP_FAILED) {
-    PLOG(ERROR) << "mmap(" << sb.st_size << ", R, PRIVATE, " << fd << ", 0) failed";
-    return false;
-  }
-
-  addr = static_cast<unsigned char*>(memPtr);
-  length = sb.st_size;
-  ranges_.clear();
-  ranges_.emplace_back(MappedRange{ memPtr, static_cast<size_t>(sb.st_size) });
-
-  return true;
-}
-
-// A "block map" which looks like this (from uncrypt/uncrypt.cpp):
-//
-//   /dev/block/platform/msm_sdcc.1/by-name/userdata     # block device
-//   49652 4096                                          # file size in bytes, block size
-//   3                                                   # count of block ranges
-//   1000 1008                                           # block range 0
-//   2100 2102                                           # ... block range 1
-//   30 33                                               # ... block range 2
-//
-// Each block range represents a half-open interval; the line "30 33" reprents the blocks
-// [30, 31, 32].
-bool MemMapping::MapBlockFile(const std::string& filename) {
-  std::string content;
-  if (!android::base::ReadFileToString(filename, &content)) {
-    PLOG(ERROR) << "Failed to read " << filename;
-    return false;
-  }
-
-  std::vector<std::string> lines = android::base::Split(android::base::Trim(content), "\n");
-  if (lines.size() < 4) {
-    LOG(ERROR) << "Block map file is too short: " << lines.size();
-    return false;
-  }
-
-  size_t size;
-  size_t blksize;
-  if (sscanf(lines[1].c_str(), "%zu %zu", &size, &blksize) != 2) {
-    LOG(ERROR) << "Failed to parse file size and block size: " << lines[1];
-    return false;
-  }
-
-  size_t range_count;
-  if (sscanf(lines[2].c_str(), "%zu", &range_count) != 1) {
-    LOG(ERROR) << "Failed to parse block map header: " << lines[2];
-    return false;
-  }
-
-  size_t blocks;
-  if (blksize != 0) {
-    blocks = ((size - 1) / blksize) + 1;
-  }
-  if (size == 0 || blksize == 0 || blocks > SIZE_MAX / blksize || range_count == 0 ||
-      lines.size() != 3 + range_count) {
-    LOG(ERROR) << "Invalid data in block map file: size " << size << ", blksize " << blksize
-               << ", range_count " << range_count << ", lines " << lines.size();
-    return false;
-  }
-
-  // Reserve enough contiguous address space for the whole file.
-  void* reserve = mmap(nullptr, blocks * blksize, PROT_NONE, MAP_PRIVATE | MAP_ANON, -1, 0);
-  if (reserve == MAP_FAILED) {
-    PLOG(ERROR) << "failed to reserve address space";
-    return false;
-  }
-
-  const std::string& block_dev = lines[0];
-  android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(block_dev.c_str(), O_RDONLY)));
-  if (fd == -1) {
-    PLOG(ERROR) << "failed to open block device " << block_dev;
-    munmap(reserve, blocks * blksize);
-    return false;
-  }
-
-  ranges_.clear();
-
-  unsigned char* next = static_cast<unsigned char*>(reserve);
-  size_t remaining_size = blocks * blksize;
-  bool success = true;
-  for (size_t i = 0; i < range_count; ++i) {
-    const std::string& line = lines[i + 3];
-
-    size_t start, end;
-    if (sscanf(line.c_str(), "%zu %zu\n", &start, &end) != 2) {
-      LOG(ERROR) << "failed to parse range " << i << ": " << line;
-      success = false;
-      break;
-    }
-    size_t range_size = (end - start) * blksize;
-    if (end <= start || (end - start) > SIZE_MAX / blksize || range_size > remaining_size) {
-      LOG(ERROR) << "Invalid range: " << start << " " << end;
-      success = false;
-      break;
-    }
-
-    void* range_start = mmap(next, range_size, PROT_READ, MAP_PRIVATE | MAP_FIXED, fd,
-                             static_cast<off_t>(start) * blksize);
-    if (range_start == MAP_FAILED) {
-      PLOG(ERROR) << "failed to map range " << i << ": " << line;
-      success = false;
-      break;
-    }
-    ranges_.emplace_back(MappedRange{ range_start, range_size });
-
-    next += range_size;
-    remaining_size -= range_size;
-  }
-  if (success && remaining_size != 0) {
-    LOG(ERROR) << "Invalid ranges: remaining_size " << remaining_size;
-    success = false;
-  }
-  if (!success) {
-    munmap(reserve, blocks * blksize);
-    return false;
-  }
-
-  addr = static_cast<unsigned char*>(reserve);
-  length = size;
-
-  LOG(INFO) << "mmapped " << range_count << " ranges";
-
-  return true;
-}
-
-bool MemMapping::MapFile(const std::string& fn) {
-  if (fn.empty()) {
-    LOG(ERROR) << "Empty filename";
-    return false;
-  }
-
-  if (fn[0] == '@') {
-    // Block map file "@/cache/recovery/block.map".
-    if (!MapBlockFile(fn.substr(1))) {
-      LOG(ERROR) << "Map of '" << fn << "' failed";
-      return false;
-    }
-  } else {
-    // This is a regular file.
-    android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(fn.c_str(), O_RDONLY)));
-    if (fd == -1) {
-      PLOG(ERROR) << "Unable to open '" << fn << "'";
-      return false;
-    }
-
-    if (!MapFD(fd)) {
-      LOG(ERROR) << "Map of '" << fn << "' failed";
-      return false;
-    }
-  }
-  return true;
-}
-
-MemMapping::~MemMapping() {
-  for (const auto& range : ranges_) {
-    if (munmap(range.addr, range.length) == -1) {
-      PLOG(ERROR) << "Failed to munmap(" << range.addr << ", " << range.length << ")";
-    }
-  };
-  ranges_.clear();
-}