storageproxy: set a property when secure storage becomes rw (9c77e66d) · Commits · e / os / android_system_core

trusty/storage/proxy/storage.c

+31 −7

Original line number	Diff line number	Diff line
		@@ -55,7 +55,7 @@ static const char *ssdir_name;
		static struct storage_mapping_node* storage_mapping_head;

		/*
		* Property set to 1 after we have opened a file under ssdir_name. The backing
		* Properties set to 1 after we have opened a file under ssdir_name. The backing
		* files for both TD and TDP are currently located under /data/vendor/ss and can
		* only be opened once userdata is mounted. This storageproxyd service is
		* restarted when userdata is available, which causes the Trusty storage service
		@@ -64,11 +64,16 @@ static struct storage_mapping_node* storage_mapping_head;
		* ports will be available (although they may block if still being initialized),
		* and connections will not be reset after this point (assuming the
		* storageproxyd service stays running).
		*
		* fs_ready - secure storage is read-only (due to checkpointing after upgrade)
		* fs_ready_rw - secure storage is readable and writable
		*/
		#define FS_READY_PROPERTY "ro.vendor.trusty.storage.fs_ready"
		#define FS_READY_RW_PROPERTY "ro.vendor.trusty.storage.fs_ready_rw"

		/* has FS_READY_PROPERTY been set? */
		static bool fs_ready_initialized = false;
		static bool fs_ready_set = false;
		static bool fs_ready_rw_set = false;

		static enum sync_state fs_state;
		static enum sync_state fd_state[FD_TBL_SIZE];
		@@ -80,6 +85,17 @@ static struct {
		uint8_t data[MAX_READ_SIZE];
		} read_rsp;

		static bool property_set_helper(const char* prop) {
		int rc = property_set(prop, "1");
		if (rc == 0) {
		ALOGI("Set property %s\n", prop);
		} else {
		ALOGE("Could not set property %s, rc: %d\n", prop, rc);
		}

		return rc == 0;
		}

		static uint32_t insert_fd(int open_flags, int fd, struct storage_mapping_node* node) {
		uint32_t handle = fd;

		@@ -520,12 +536,20 @@ int storage_file_open(struct storage_msg* msg, const void* r, size_t req_len,
		path = NULL;

		/* a backing file has been opened, notify any waiting init steps */
		if (!fs_ready_initialized) {
		rc = property_set(FS_READY_PROPERTY, "1");
		if (rc == 0) {
		fs_ready_initialized = true;
		if (!fs_ready_set \|\| !fs_ready_rw_set) {
		bool is_checkpoint_active = false;

		rc = is_data_checkpoint_active(&is_checkpoint_active);
		if (rc != 0) {
		ALOGE("is_data_checkpoint_active() failed (%d)\n", rc);
		} else {
		ALOGE("Could not set property %s, rc: %d\n", FS_READY_PROPERTY, rc);
		if (!fs_ready_rw_set && !is_checkpoint_active) {
		fs_ready_rw_set = property_set_helper(FS_READY_RW_PROPERTY);
		}

		if (!fs_ready_set) {
		fs_ready_set = property_set_helper(FS_READY_PROPERTY);
		}
		}
		}