Hook up the backup data writer, and add a utility to read the backup data files.
diff --git a/include/utils/backup_helpers.h b/include/utils/backup_helpers.h
index 0c59fec..24b6c9e 100644
--- a/include/utils/backup_helpers.h
+++ b/include/utils/backup_helpers.h
@@ -22,24 +22,27 @@
namespace android {
-int back_up_files(int oldSnapshotFD, int oldDataStream, int newSnapshotFD,
- char const* fileBase, char const* const* files, int fileCount);
+enum {
+ BACKUP_HEADER_APP_V1 = 0x31707041, // App1 (little endian)
+ BACKUP_HEADER_ENTITY_V1 = 0x61746144, // Data (little endian)
+ BACKUP_FOOTER_APP_V1 = 0x746f6f46, // Foot (little endian)
+};
// the sizes of all of these match.
typedef struct {
- int type; // == APP_MAGIC_V1
+ int type; // == BACKUP_HEADER_APP_V1
int packageLen; // length of the name of the package that follows, not including the null.
int cookie;
} app_header_v1;
typedef struct {
- int type; // ENTITY_MAGIC_V1
+ int type; // BACKUP_HEADER_ENTITY_V1
int keyLen; // length of the key name, not including the null terminator
- int dataSize; // size of the data, not including the padding
+ int dataSize; // size of the data, not including the padding, -1 means delete
} entity_header_v1;
typedef struct {
- int type; // FOOTER_MAGIC_V1
+ int type; // BACKUP_FOOTER_APP_V1
int entityCount; // the number of entities that were written
int cookie;
} app_footer_v1;
@@ -89,11 +92,12 @@
~BackupDataReader();
status_t Status();
- status_t ReadNextHeader();
+ status_t ReadNextHeader(int* type = NULL);
status_t ReadAppHeader(String8* packageName, int* cookie);
bool HasEntities();
status_t ReadEntityHeader(String8* key, size_t* dataSize);
+ status_t SkipEntityData(); // must be called with the pointer at the begining of the data.
status_t ReadEntityData(void* data, size_t size);
status_t ReadAppFooter(int* cookie);
@@ -113,7 +117,11 @@
} m_header;
};
-#define TEST_BACKUP_HELPERS 0
+int back_up_files(int oldSnapshotFD, BackupDataWriter* dataStream, int newSnapshotFD,
+ char const* fileBase, char const* const* files, int fileCount);
+
+
+#define TEST_BACKUP_HELPERS 1
#if TEST_BACKUP_HELPERS
int backup_helper_test_empty();