Merge "persist ringbuffer to flash when vendor hal stops" into pi-dev am: ecc6269f3a (762a82c7) · Commits · e / os / android_hardware_interfaces

wifi/1.2/default/wifi_chip.cpp

+25 −7

Original line number	Diff line number	Diff line
		@@ -48,6 +48,7 @@ constexpr ChipModeId kV2ChipModeId = 2;
		constexpr char kCpioMagic[] = "070701";
		constexpr size_t kMaxBufferSizeBytes = 1024 * 1024;
		constexpr uint32_t kMaxRingBufferFileAgeSeconds = 60 * 60;
		constexpr uint32_t kMaxRingBufferFileNum = 20;
		constexpr char kTombstoneFolderPath[] = "/data/vendor/tombstones/wifi/";

		template <typename Iface>
		@@ -104,7 +105,9 @@ std::string getP2pIfaceName() {
		return buffer.data();
		}

		// delete files older than a predefined time in the wifi tombstone dir
		// delete files that meet either conditions:
		// 1. older than a predefined time in the wifi tombstone dir.
		// 2. Files in excess to a predefined amount, starting from the oldest ones
		bool removeOldFilesInternal() {
		time_t now = time(0);
		const time_t delete_files_before = now - kMaxRingBufferFileAgeSeconds;
		@@ -116,6 +119,7 @@ bool removeOldFilesInternal() {
		unique_fd dir_auto_closer(dirfd(dir_dump));
		struct dirent* dp;
		bool success = true;
		std::list<std::pair<const time_t, std::string>> valid_files;
		while ((dp = readdir(dir_dump))) {
		if (dp->d_type != DT_REG) {
		continue;
		@@ -129,13 +133,24 @@ bool removeOldFilesInternal() {
		success = false;
		continue;
		}
		if (cur_file_stat.st_mtime >= delete_files_before) {
		continue;
		}
		if (unlink(cur_file_path.c_str()) != 0) {
		const time_t cur_file_time = cur_file_stat.st_mtime;
		valid_files.push_back(
		std::pair<const time_t, std::string>(cur_file_time, cur_file_path));
		}
		valid_files.sort(); // sort the list of files by last modified time from
		// small to big.
		uint32_t cur_file_count = valid_files.size();
		for (auto cur_file : valid_files) {
		if (cur_file_count > kMaxRingBufferFileNum \|\|
		cur_file.first < delete_files_before) {
		if (unlink(cur_file.second.c_str()) != 0) {
		LOG(ERROR) << "Error deleting file " << strerror(errno);
		success = false;
		}
		cur_file_count--;
		} else {
		break;
		}
		}
		return success;
		}
		@@ -309,6 +324,9 @@ WifiChip::WifiChip(
		}

		void WifiChip::invalidate() {
		if (!writeRingbufferFilesInternal()) {
		LOG(ERROR) << "Error writing files to flash";
		}
		invalidateAndRemoveAllIfaces();
		legacy_hal_.reset();
		event_cb_handler_.invalidate();