| // Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef INSTALLER_INST_UTIL_H_ |
| #define INSTALLER_INST_UTIL_H_ |
| |
| #include <string> |
| #include <vector> |
| |
| #define RUN_OR_RETURN_FALSE(_x) \ |
| do { \ |
| if (RunCommand(_x) != 0) return false; \ |
| } while (0) |
| |
| // Find a pointer to the first element of a statically sized array. |
| template<typename T, size_t N> |
| T * begin(T (&ra)[N]) { |
| return ra + 0; |
| } |
| |
| // Find a pointer to the element after the end of a statically sized array. |
| template<typename T, size_t N> |
| T * end(T (&ra)[N]) { |
| return ra + N; |
| } |
| |
| // Start a timer (there can only be one active). |
| void LoggingTimerStart(); |
| |
| // Log how long since LoggingTimerStart was last called. |
| void LoggingTimerFinish(); |
| |
| __attribute__((format(printf, 1, 2))) |
| std::string StringPrintf(const char* format, ...); |
| |
| void SplitString(const std::string& str, |
| char split, |
| std::vector<std::string>* output); |
| |
| void JoinStrings(const std::vector<std::string>& strs, |
| const std::string& split, |
| std::string* output); |
| |
| // This is a place holder to invoke the backing scripts. Once all scripts have |
| // been rewritten as library calls this command should be deleted. |
| int RunCommand(const std::string& command); |
| |
| bool ReadFileToString(const std::string& path, std::string* contents); |
| |
| bool WriteStringToFile(const std::string& contents, const std::string& path); |
| |
| // Copies a single file. |
| bool CopyFile(const std::string& from_path, const std::string& to_path); |
| |
| bool LsbReleaseValue(const std::string& file, |
| const std::string& key, |
| std::string* result); |
| |
| bool VersionLess(const std::string& left, |
| const std::string& right); |
| |
| std::string GetBlockDevFromPartitionDev(const std::string& partition_dev); |
| |
| int GetPartitionFromPartitionDev(const std::string& partition_dev); |
| |
| std::string MakePartitionDev(const std::string& partition_dev, |
| int partition); |
| |
| // Convert /blah/file to /blah |
| std::string Dirname(const std::string& filename); |
| |
| // rm *pack from /dirname |
| bool RemovePackFiles(const std::string& dirname); |
| |
| // Create an empty file |
| bool Touch(const std::string& filename); |
| |
| // Replace the first instance of pattern in the file with value. |
| bool ReplaceInFile(const std::string& pattern, |
| const std::string& value, |
| const std::string& path); |
| |
| // Replace all instances of pattern in target with value |
| void ReplaceAll(std::string* target, |
| const std::string& pattern, |
| const std::string& value); |
| |
| // See bug chromium-os:11517. This fixes an old FS corruption problem. |
| bool R10FileSystemPatch(const std::string& dev_name); |
| |
| // Mark ext2 (3 or 4???) filesystem RW |
| bool MakeFileSystemRw(const std::string& dev_name, bool rw); |
| |
| // hdparm -r 1 /device |
| bool MakeDeviceReadOnly(const std::string& dev_name); |
| |
| // Conveniently invoke the external dump_kernel_config library |
| std::string DumpKernelConfig(const std::string& kernel_dev); |
| |
| // ExtractKernelNamedArg(DumpKernelConfig(..), "root") -> /dev/dm-0 |
| // This understands quoted values. dm -> "a b c, foo=far" (strips quotes) |
| std::string ExtractKernelArg(const std::string& kernel_config, |
| const std::string& tag); |
| |
| // Take a kernel style argument list and modify a single argument |
| // value. Quotes will be added to the value if needed. |
| bool SetKernelArg(const std::string& tag, |
| const std::string& value, |
| std::string* kernel_config); |
| |
| // IsReadonly determines if the name devices should be treated as |
| // read-only. This is based on the device name being prefixed with |
| // "/dev/dm". This catches both cases where verity may be /dev/dm-0 |
| // or /dev/dm-1. |
| bool IsReadonly(const std::string& device); |
| |
| #endif // INSTALLER_INST_UTIL_H_ |