Merge "add kill all for shutdown_timeout of 0" (b0416c3d) · Commits · e / os / android_system_core

init/reboot.cpp

+24 −17

Original line number	Diff line number	Diff line
		@@ -202,6 +202,16 @@ RebootSystem(unsigned int cmd, const std::string& rebootTarget) {
		abort();
		}

		static void DoSync() {
		// quota sync is not done by sync call, so should be done separately.
		// quota sync is in VFS level, so do it before sync, which goes down to fs level.
		int r = quotactl(QCMD(Q_SYNC, 0), nullptr, 0 /* do not care /, 0 / do not care */);
		if (r < 0) {
		PLOG(ERROR) << "quotactl failed";
		}
		sync();
		}

		/* Find all read+write block devices and emulated devices in /proc/mounts
		* and add them to correpsponding list.
		*/
		@@ -280,6 +290,7 @@ static UmountStat TryUmountAndFsck(bool runFsck) {
		UmountPartitions(&emulatedPartitions, 1, MNT_DETACH);
		}
		}
		DoSync(); // emulated partition change can lead to update
		UmountStat stat = UMOUNT_STAT_SUCCESS;
		/* data partition needs all pending writes to be completed and all emulated partitions
		* umounted. If umount failed in the above step, it DETACH is requested, so umount can
		@@ -301,15 +312,7 @@ static UmountStat TryUmountAndFsck(bool runFsck) {
		return stat;
		}

		static void DoSync() {
		// quota sync is not done by sync cal, so should be done separately.
		// quota sync is in VFS level, so do it before sync, which goes down to fs level.
		int r = quotactl(QCMD(Q_SYNC, 0), nullptr, 0 /* do not care /, 0 / do not care */);
		if (r < 0) {
		PLOG(ERROR) << "quotactl failed";
		}
		sync();
		}
		static void KillAllProcesses() { android::base::WriteStringToFile("i", "/proc/sysrq-trigger"); }

		static void __attribute__((noreturn)) DoThermalOff() {
		LOG(WARNING) << "Thermal system shutdown";
		@@ -322,12 +325,6 @@ void DoReboot(unsigned int cmd, const std::string& reason, const std::string& re
		bool runFsck) {
		Timer t;
		LOG(INFO) << "Reboot start, reason: " << reason << ", rebootTarget: " << rebootTarget;
		std::string timeout = property_get("ro.build.shutdown_timeout");
		unsigned int delay = 0;

		if (!android::base::ParseUint(timeout, &delay)) {
		delay = 3; // force service termination by default
		}

		android::base::WriteStringToFile(StringPrintf("%s\n", reason.c_str()), LAST_REBOOT_REASON_FILE);

		@@ -335,6 +332,15 @@ void DoReboot(unsigned int cmd, const std::string& reason, const std::string& re
		DoThermalOff();
		abort();
		}

		std::string timeout = property_get("ro.build.shutdown_timeout");
		unsigned int delay = 0;
		if (!android::base::ParseUint(timeout, &delay)) {
		delay = 3; // force service termination by default
		} else {
		LOG(INFO) << "ro.build.shutdown_timeout set:" << delay;
		}

		static const constexpr char* shutdown_critical_services[] = {"vold", "watchdogd"};
		for (const char* name : shutdown_critical_services) {
		Service* s = ServiceManager::GetInstance().FindServiceByName(name);
		@@ -400,11 +406,12 @@ void DoReboot(unsigned int cmd, const std::string& reason, const std::string& re
		Service* voldService = ServiceManager::GetInstance().FindServiceByName("vold");
		if (voldService != nullptr && voldService->IsRunning()) {
		ShutdownVold();
		voldService->Terminate();
		} else {
		LOG(INFO) << "vold not running, skipping vold shutdown";
		}

		if (delay == 0) { // no processes terminated. kill all instead.
		KillAllProcesses();
		}
		// 4. sync, try umount, and optionally run fsck for user shutdown
		DoSync();
		UmountStat stat = TryUmountAndFsck(runFsck);