diff options
Diffstat (limited to 'otautil')
| -rw-r--r-- | otautil/Android.bp | 12 | ||||
| -rw-r--r-- | otautil/include/otautil/rangeset.h | 7 | ||||
| -rw-r--r-- | otautil/include/otautil/roots.h | 4 | ||||
| -rw-r--r-- | otautil/include/otautil/sysutil.h | 15 | ||||
| -rw-r--r-- | otautil/rangeset.cpp | 52 | ||||
| -rw-r--r-- | otautil/roots.cpp | 8 | ||||
| -rw-r--r-- | otautil/sysutil.cpp | 18 |
7 files changed, 90 insertions, 26 deletions
diff --git a/otautil/Android.bp b/otautil/Android.bp index 0a21731e8..871dcae9a 100644 --- a/otautil/Android.bp +++ b/otautil/Android.bp @@ -24,12 +24,16 @@ cc_library_static { // Minimal set of files to support host build. srcs: [ + "dirutil.cpp", "paths.cpp", "rangeset.cpp", + "sysutil.cpp", ], shared_libs: [ "libbase", + "libcutils", + "libselinux", ], export_include_dirs: [ @@ -39,12 +43,10 @@ cc_library_static { target: { android: { srcs: [ - "dirutil.cpp", "logging.cpp", "mounts.cpp", "parse_install_logs.cpp", "roots.cpp", - "sysutil.cpp", "thermalutil.cpp", ], @@ -57,10 +59,12 @@ cc_library_static { ], shared_libs: [ - "libcutils", "libext4_utils", "libfs_mgr", - "libselinux", + ], + + export_static_lib_headers: [ + "libfstab", ], }, }, diff --git a/otautil/include/otautil/rangeset.h b/otautil/include/otautil/rangeset.h index e91d02ca6..a18c30e29 100644 --- a/otautil/include/otautil/rangeset.h +++ b/otautil/include/otautil/rangeset.h @@ -18,6 +18,7 @@ #include <stddef.h> +#include <optional> #include <string> #include <utility> #include <vector> @@ -49,6 +50,12 @@ class RangeSet { // bounds. For example, "3,5" contains blocks 3 and 4. So "3,5" and "5,7" are not overlapped. bool Overlaps(const RangeSet& other) const; + // Returns a subset of ranges starting from |start_index| with respect to the original range. The + // output range will have |num_of_blocks| blocks in size. Returns std::nullopt if the input is + // invalid. e.g. RangeSet({{0, 5}, {10, 15}}).GetSubRanges(1, 5) returns + // RangeSet({{1, 5}, {10, 11}}). + std::optional<RangeSet> GetSubRanges(size_t start_index, size_t num_of_blocks) const; + // Returns a vector of RangeSets that contain the same set of blocks represented by the current // RangeSet. The RangeSets in the vector contain similar number of blocks, with a maximum delta // of 1-block between any two of them. For example, 14 blocks would be split into 4 + 4 + 3 + 3, diff --git a/otautil/include/otautil/roots.h b/otautil/include/otautil/roots.h index 482f3d050..2ab3f4549 100644 --- a/otautil/include/otautil/roots.h +++ b/otautil/include/otautil/roots.h @@ -53,7 +53,3 @@ int format_volume(const std::string& volume, const std::string& directory); // Ensure that all and only the volumes that packages expect to find // mounted (/tmp and /cache) are mounted. Returns 0 on success. int setup_install_mounts(); - -bool logical_partitions_mapped(); - -std::string get_system_root(); diff --git a/otautil/include/otautil/sysutil.h b/otautil/include/otautil/sysutil.h index 692a99e9d..326db8644 100644 --- a/otautil/include/otautil/sysutil.h +++ b/otautil/include/otautil/sysutil.h @@ -14,12 +14,12 @@ * limitations under the License. */ -#ifndef _OTAUTIL_SYSUTIL -#define _OTAUTIL_SYSUTIL +#pragma once #include <sys/types.h> #include <string> +#include <string_view> #include <vector> #include "rangeset.h" @@ -101,13 +101,14 @@ class MemMapping { std::vector<MappedRange> ranges_; }; -// Wrapper function to trigger a reboot, by additionally handling quiescent reboot mode. The -// command should start with "reboot," (e.g. "reboot,bootloader" or "reboot,"). -bool reboot(const std::string& command); +// Reboots the device into the specified target, by additionally handling quiescent reboot mode. +// All unknown targets reboot into Android. +bool Reboot(std::string_view target); + +// Triggers a shutdown. +bool Shutdown(std::string_view target); // Returns a null-terminated char* array, where the elements point to the C-strings in the given // vector, plus an additional nullptr at the end. This is a helper function that facilitates // calling C functions (such as getopt(3)) that expect an array of C-strings. std::vector<char*> StringVectorToNullTerminatedArray(const std::vector<std::string>& args); - -#endif // _OTAUTIL_SYSUTIL diff --git a/otautil/rangeset.cpp b/otautil/rangeset.cpp index 5ab8e08fe..8ee99dd7a 100644 --- a/otautil/rangeset.cpp +++ b/otautil/rangeset.cpp @@ -184,6 +184,58 @@ bool RangeSet::Overlaps(const RangeSet& other) const { return false; } +std::optional<RangeSet> RangeSet::GetSubRanges(size_t start_index, size_t num_of_blocks) const { + size_t end_index = start_index + num_of_blocks; // The index of final block to read plus one + if (start_index > end_index || end_index > blocks_) { + LOG(ERROR) << "Failed to get the sub ranges for start_index " << start_index + << " num_of_blocks " << num_of_blocks + << " total number of blocks the range contains is " << blocks_; + return std::nullopt; + } + + if (num_of_blocks == 0) { + LOG(WARNING) << "num_of_blocks is zero when calling GetSubRanges()"; + return RangeSet(); + } + + RangeSet result; + size_t current_index = 0; + for (const auto& [range_start, range_end] : ranges_) { + CHECK_LT(range_start, range_end); + size_t blocks_in_range = range_end - range_start; + // Linear search to skip the ranges until we reach start_block. + if (current_index + blocks_in_range <= start_index) { + current_index += blocks_in_range; + continue; + } + + size_t trimmed_range_start = range_start; + // We have found the first block range to read, trim the heading blocks. + if (current_index < start_index) { + trimmed_range_start += start_index - current_index; + } + // Trim the trailing blocks if the last range has more blocks than desired; also return the + // result. + if (current_index + blocks_in_range >= end_index) { + size_t trimmed_range_end = range_end - (current_index + blocks_in_range - end_index); + if (!result.PushBack({ trimmed_range_start, trimmed_range_end })) { + return std::nullopt; + } + + return result; + } + + if (!result.PushBack({ trimmed_range_start, range_end })) { + return std::nullopt; + } + current_index += blocks_in_range; + } + + LOG(ERROR) << "Failed to construct byte ranges to read, start_block: " << start_index + << ", num_of_blocks: " << num_of_blocks << " total number of blocks: " << blocks_; + return std::nullopt; +} + // Ranges in the the set should be mutually exclusive; and they're sorted by the start block. SortedRangeSet::SortedRangeSet(std::vector<Range>&& pairs) : RangeSet(std::move(pairs)) { std::sort(ranges_.begin(), ranges_.end()); diff --git a/otautil/roots.cpp b/otautil/roots.cpp index 815d644e5..a778e05ff 100644 --- a/otautil/roots.cpp +++ b/otautil/roots.cpp @@ -275,11 +275,3 @@ int setup_install_mounts() { } return 0; } - -bool logical_partitions_mapped() { - return android::fs_mgr::LogicalPartitionsMapped(); -} - -std::string get_system_root() { - return android::fs_mgr::GetSystemRoot(); -} diff --git a/otautil/sysutil.cpp b/otautil/sysutil.cpp index 8366fa0ac..a8829858d 100644 --- a/otautil/sysutil.cpp +++ b/otautil/sysutil.cpp @@ -94,6 +94,11 @@ BlockMapData BlockMapData::ParseBlockMapFile(const std::string& block_map_path) remaining_blocks -= range_blocks; } + if (remaining_blocks != 0) { + LOG(ERROR) << "Invalid ranges: remaining blocks " << remaining_blocks; + return {}; + } + return BlockMapData(block_dev, file_size, blksize, std::move(ranges)); } @@ -214,14 +219,21 @@ MemMapping::~MemMapping() { ranges_.clear(); } -bool reboot(const std::string& command) { - std::string cmd = command; - if (android::base::GetBoolProperty("ro.boot.quiescent", false)) { +bool Reboot(std::string_view target) { + std::string cmd = "reboot," + std::string(target); + // Honor the quiescent mode if applicable. + if (target != "bootloader" && target != "fastboot" && + android::base::GetBoolProperty("ro.boot.quiescent", false)) { cmd += ",quiescent"; } return android::base::SetProperty(ANDROID_RB_PROPERTY, cmd); } +bool Shutdown(std::string_view target) { + std::string cmd = "shutdown," + std::string(target); + return android::base::SetProperty(ANDROID_RB_PROPERTY, cmd); +} + std::vector<char*> StringVectorToNullTerminatedArray(const std::vector<std::string>& args) { std::vector<char*> result(args.size()); std::transform(args.cbegin(), args.cend(), result.begin(), |