donut snapshot

7 files changed, 274 insertions, 144 deletions

diff --git a/include/utils/AssetManager.h b/include/utils/AssetManager.h
index e94c0e8..d8994e0 100644
--- a/include/utils/AssetManager.h
+++ b/include/utils/AssetManager.h
@@ -153,6 +153,18 @@ public:
     AssetDir* openDir(const char* dirName);
 
     /*
+     * Open a directory within a particular path of the asset manager.
+     *
+     * The contents of the directory are an amalgam of vendor-specific,
+     * locale-specific, and generic assets stored loosely or in asset
+     * packages.  Depending on the cache setting and previous accesses,
+     * this call may incur significant disk overhead.
+     *
+     * To open the top-level directory, pass in "".
+     */
+    AssetDir* openNonAssetDir(void* cookie, const char* dirName);
+
+    /*
      * Get the type of a file in the asset hierarchy.  They will either
      * be "regular" or "directory".  [Currently only works for "regular".]
      *
@@ -239,6 +251,9 @@ private:
         Asset* getResourceTableAsset();
         Asset* setResourceTableAsset(Asset* asset);
 
+        ResTable* getResourceTable();
+        ResTable* setResourceTable(ResTable* res);
+        
         bool isUpToDate();
         
     protected:
@@ -253,6 +268,7 @@ private:
         time_t mModWhen;
 
         Asset* mResourceTableAsset;
+        ResTable* mResourceTable;
 
         static Mutex gLock;
         static DefaultKeyedVector<String8, wp<SharedZip> > gOpen;
@@ -276,8 +292,11 @@ private:
          */
         ZipFileRO* getZip(const String8& path);
 
-        Asset* getZipResourceTable(const String8& path);
-        Asset* setZipResourceTable(const String8& path, Asset* asset);
+        Asset* getZipResourceTableAsset(const String8& path);
+        Asset* setZipResourceTableAsset(const String8& path, Asset* asset);
+
+        ResTable* getZipResourceTable(const String8& path);
+        ResTable* setZipResourceTable(const String8& path, ResTable* res);
 
         // generate path, e.g. "common/en-US-noogle.zip"
         static String8 getPathName(const char* path);
diff --git a/include/utils/BackupHelpers.h b/include/utils/BackupHelpers.h
new file mode 100644
index 0000000..b1f5045
--- /dev/null
+++ b/include/utils/BackupHelpers.h
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _UTILS_BACKUP_HELPERS_H
+#define _UTILS_BACKUP_HELPERS_H
+
+#include <utils/Errors.h>
+#include <utils/String8.h>
+#include <utils/KeyedVector.h>
+
+namespace android {
+
+enum {
+    BACKUP_HEADER_ENTITY_V1 = 0x61746144, // Data (little endian)
+};
+
+typedef struct {
+    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, -1 means delete
+} entity_header_v1;
+
+struct SnapshotHeader {
+    int magic0;
+    int fileCount;
+    int magic1;
+    int totalSize;
+};
+
+struct FileState {
+    int modTime_sec;
+    int modTime_nsec;
+    int mode;
+    int size;
+    int crc32;
+    int nameLen;
+};
+
+struct FileRec {
+    String8 file;
+    bool deleted;
+    FileState s;
+};
+
+
+/**
+ * Writes the data.
+ *
+ * If an error occurs, it poisons this object and all write calls will fail
+ * with the error that occurred.
+ */
+class BackupDataWriter
+{
+public:
+    BackupDataWriter(int fd);
+    // does not close fd
+    ~BackupDataWriter();
+
+    status_t WriteEntityHeader(const String8& key, size_t dataSize);
+    status_t WriteEntityData(const void* data, size_t size);
+
+    void SetKeyPrefix(const String8& keyPrefix);
+
+private:
+    explicit BackupDataWriter();
+    status_t write_padding_for(int n);
+    
+    int m_fd;
+    status_t m_status;
+    ssize_t m_pos;
+    int m_entityCount;
+    String8 m_keyPrefix;
+};
+
+/**
+ * Reads the data.
+ *
+ * If an error occurs, it poisons this object and all write calls will fail
+ * with the error that occurred.
+ */
+class BackupDataReader
+{
+public:
+    BackupDataReader(int fd);
+    // does not close fd
+    ~BackupDataReader();
+
+    status_t Status();
+    status_t ReadNextHeader(bool* done, int* type);
+
+    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.
+    ssize_t ReadEntityData(void* data, size_t size);
+
+private:
+    explicit BackupDataReader();
+    status_t skip_padding();
+    
+    int m_fd;
+    bool m_done;
+    status_t m_status;
+    ssize_t m_pos;
+    ssize_t m_dataEndPos;
+    int m_entityCount;
+    union {
+        int type;
+        entity_header_v1 entity;
+    } m_header;
+    String8 m_key;
+};
+
+int back_up_files(int oldSnapshotFD, BackupDataWriter* dataStream, int newSnapshotFD,
+        char const* const* files, char const* const *keys, int fileCount);
+
+class RestoreHelperBase
+{
+public:
+    RestoreHelperBase();
+    ~RestoreHelperBase();
+
+    status_t WriteFile(const String8& filename, BackupDataReader* in);
+    status_t WriteSnapshot(int fd);
+
+private:
+    void* m_buf;
+    bool m_loggedUnknownMetadata;
+    KeyedVector<String8,FileRec> m_files;
+};
+
+#define TEST_BACKUP_HELPERS 1
+
+#if TEST_BACKUP_HELPERS
+int backup_helper_test_empty();
+int backup_helper_test_four();
+int backup_helper_test_files();
+int backup_helper_test_null_base();
+int backup_helper_test_missing_file();
+int backup_helper_test_data_writer();
+int backup_helper_test_data_reader();
+#endif
+
+} // namespace android
+
+#endif // _UTILS_BACKUP_HELPERS_H
diff --git a/include/utils/ByteOrder.h b/include/utils/ByteOrder.h
index 4c06067..baa3a83 100644
--- a/include/utils/ByteOrder.h
+++ b/include/utils/ByteOrder.h
@@ -38,6 +38,16 @@
  * intent is to allow us to avoid byte swapping on the device.
  */
 
+static inline uint32_t android_swap_long(uint32_t v)
+{
+    return (v<<24) | ((v<<8)&0x00FF0000) | ((v>>8)&0x0000FF00) | (v>>24);
+}
+
+static inline uint16_t android_swap_short(uint16_t v)
+{
+    return (v<<8) | (v>>8);
+}
+
 #define DEVICE_BYTE_ORDER LITTLE_ENDIAN
 
 #if BYTE_ORDER == DEVICE_BYTE_ORDER
@@ -49,16 +59,6 @@
 
 #else
 
-static inline uint32_t android_swap_long(uint32_t v)
-{
-    return (v<<24) | ((v<<8)&0x00FF0000) | ((v>>8)&0x0000FF00) | (v>>24);
-}
-
-static inline uint16_t android_swap_short(uint16_t v)
-{
-    return (v<<8) | (v>>8);
-}
-
 #define	dtohl(x)	(android_swap_long(x))
 #define	dtohs(x)	(android_swap_short(x))
 #define	htodl(x)	(android_swap_long(x))
@@ -66,4 +66,16 @@ static inline uint16_t android_swap_short(uint16_t v)
 
 #endif
 
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define fromlel(x) (x)
+#define fromles(x) (x)
+#define tolel(x) (x)
+#define toles(x) (x)
+#else
+#define fromlel(x) (android_swap_long(x))
+#define fromles(x) (android_swap_short(x))
+#define tolel(x) (android_swap_long(x))
+#define toles(x) (android_swap_short(x))
+#endif
+
 #endif // _LIBS_UTILS_BYTE_ORDER_H
diff --git a/include/utils/Parcel.h b/include/utils/Parcel.h
index 9087c44..af1490a 100644
--- a/include/utils/Parcel.h
+++ b/include/utils/Parcel.h
@@ -80,8 +80,11 @@ public:
     status_t            writeStrongBinder(const sp<IBinder>& val);
     status_t            writeWeakBinder(const wp<IBinder>& val);
 
-    // doesn't take ownership of the native_handle
-    status_t            writeNativeHandle(const native_handle& handle);
+    // Place a native_handle into the parcel (the native_handle's file-
+    // descriptors are dup'ed, so it is safe to delete the native_handle
+    // when this function returns). 
+    // Doesn't take ownership of the native_handle.
+    status_t            writeNativeHandle(const native_handle* handle);
     
     // Place a file descriptor into the parcel.  The given fd must remain
     // valid for the lifetime of the parcel.
@@ -114,12 +117,11 @@ public:
     wp<IBinder>         readWeakBinder() const;
 
     
-    // if alloc is NULL, native_handle is allocated with malloc(), otherwise
-    // alloc is used. If the function fails, the effects of alloc() must be
-    // reverted by the caller.
-    native_handle*     readNativeHandle(
-            native_handle* (*alloc)(void* cookie, int numFds, int ints),
-            void* cookie) const;
+    // Retrieve native_handle from the parcel. This returns a copy of the
+    // parcel's native_handle (the caller takes ownership). The caller
+    // must free the native_handle with native_handle_close() and 
+    // native_handle_delete().
+    native_handle*     readNativeHandle() const;
 
     
     // Retrieve a file descriptor from the parcel.  This returns the raw fd
diff --git a/include/utils/ResourceTypes.h b/include/utils/ResourceTypes.h
index 9b8c302..93bca4a 100644
--- a/include/utils/ResourceTypes.h
+++ b/include/utils/ResourceTypes.h
@@ -71,7 +71,7 @@ namespace android {
  * The relative sizes of the stretchy segments indicates the relative
  * amount of stretchiness of the regions bordered by the segments.  For
  * example, regions 3, 7 and 11 above will take up more horizontal space
- * than regions 1, 5 and 9 since the horizonal segment associated with
+ * than regions 1, 5 and 9 since the horizontal segment associated with
  * the first set of regions is larger than the other set of regions.  The
  * ratios of the amount of horizontal (or vertical) space taken by any
  * two stretchable slices is exactly the ratio of their corresponding
@@ -87,7 +87,7 @@ namespace android {
  * the leftmost slices always start at x=0 and the rightmost slices
  * always end at the end of the image. So, for example, the regions 0,
  * 4 and 8 (which are fixed along the X axis) start at x value 0 and
- * go to xDiv[0] amd slices 2, 6 and 10 start at xDiv[1] and end at
+ * go to xDiv[0] and slices 2, 6 and 10 start at xDiv[1] and end at
  * xDiv[2].
  *
  * The array pointed to by the colors field lists contains hints for
@@ -626,25 +626,25 @@ public:
     event_code_t next();
 
     // These are available for all nodes:
-    const int32_t getCommentID() const;
+    int32_t getCommentID() const;
     const uint16_t* getComment(size_t* outLen) const;
-    const uint32_t getLineNumber() const;
+    uint32_t getLineNumber() const;
     
     // This is available for TEXT:
-    const int32_t getTextID() const;
+    int32_t getTextID() const;
     const uint16_t* getText(size_t* outLen) const;
     ssize_t getTextValue(Res_value* outValue) const;
     
     // These are available for START_NAMESPACE and END_NAMESPACE:
-    const int32_t getNamespacePrefixID() const;
+    int32_t getNamespacePrefixID() const;
     const uint16_t* getNamespacePrefix(size_t* outLen) const;
-    const int32_t getNamespaceUriID() const;
+    int32_t getNamespaceUriID() const;
     const uint16_t* getNamespaceUri(size_t* outLen) const;
     
     // These are available for START_TAG and END_TAG:
-    const int32_t getElementNamespaceID() const;
+    int32_t getElementNamespaceID() const;
     const uint16_t* getElementNamespace(size_t* outLen) const;
-    const int32_t getElementNameID() const;
+    int32_t getElementNameID() const;
     const uint16_t* getElementName(size_t* outLen) const;
     
     // Remaining methods are for retrieving information about attributes
@@ -653,14 +653,14 @@ public:
     size_t getAttributeCount() const;
     
     // Returns -1 if no namespace, -2 if idx out of range.
-    const int32_t getAttributeNamespaceID(size_t idx) const;
+    int32_t getAttributeNamespaceID(size_t idx) const;
     const uint16_t* getAttributeNamespace(size_t idx, size_t* outLen) const;
     
-    const int32_t getAttributeNameID(size_t idx) const;
+    int32_t getAttributeNameID(size_t idx) const;
     const uint16_t* getAttributeName(size_t idx, size_t* outLen) const;
-    const uint32_t getAttributeNameResID(size_t idx) const;
+    uint32_t getAttributeNameResID(size_t idx) const;
     
-    const int32_t getAttributeValueStringID(size_t idx) const;
+    int32_t getAttributeValueStringID(size_t idx) const;
     const uint16_t* getAttributeStringValue(size_t idx, size_t* outLen) const;
     
     int32_t getAttributeDataType(size_t idx) const;
@@ -866,7 +866,7 @@ struct ResTable_config
             uint8_t keyboard;
             uint8_t navigation;
             uint8_t inputFlags;
-            uint8_t pad0;
+            uint8_t inputPad0;
         };
         uint32_t input;
     };
@@ -905,6 +905,23 @@ struct ResTable_config
         uint32_t version;
     };
     
+    enum {
+        SCREENLAYOUT_ANY  = 0x0000,
+        SCREENLAYOUT_SMALL = 0x0001,
+        SCREENLAYOUT_NORMAL = 0x0002,
+        SCREENLAYOUT_LARGE = 0x0003,
+    };
+    
+    union {
+        struct {
+            uint8_t screenLayout;
+            uint8_t screenConfigPad0;
+            uint8_t screenConfigPad1;
+            uint8_t screenConfigPad2;
+        };
+        uint32_t screenConfig;
+    };
+    
     inline void copyFromDeviceNoSwap(const ResTable_config& o) {
         const size_t size = dtohl(o.size);
         if (size >= sizeof(ResTable_config)) {
@@ -950,6 +967,8 @@ struct ResTable_config
         diff = (int32_t)(screenSize - o.screenSize);
         if (diff != 0) return diff;
         diff = (int32_t)(version - o.version);
+        if (diff != 0) return diff;
+        diff = (int32_t)(screenLayout - o.screenLayout);
         return (int)diff;
     }
     
@@ -967,7 +986,8 @@ struct ResTable_config
         CONFIG_ORIENTATION = 0x0080,
         CONFIG_DENSITY = 0x0100,
         CONFIG_SCREEN_SIZE = 0x0200,
-        CONFIG_VERSION = 0x0400
+        CONFIG_VERSION = 0x0400,
+        CONFIG_SCREEN_LAYOUT = 0x0800
     };
     
     // Compare two configuration, returning CONFIG_* flags set for each value
@@ -985,6 +1005,7 @@ struct ResTable_config
         if (navigation != o.navigation) diffs |= CONFIG_NAVIGATION;
         if (screenSize != o.screenSize) diffs |= CONFIG_SCREEN_SIZE;
         if (version != o.version) diffs |= CONFIG_VERSION;
+        if (screenLayout != o.screenLayout) diffs |= CONFIG_SCREEN_LAYOUT;
         return diffs;
     }
     
@@ -1062,6 +1083,13 @@ struct ResTable_config
             }
         }
 
+        if (screenConfig || o.screenConfig) {
+            if (screenLayout != o.screenLayout) {
+                if (!screenLayout) return false;
+                if (!o.screenLayout) return true;
+            }
+        }
+
         if (version || o.version) {
             if (sdkVersion != o.sdkVersion) {
                 if (!sdkVersion) return false;
@@ -1191,6 +1219,12 @@ struct ResTable_config
                 }
             }
 
+            if (screenConfig || o.screenConfig) {
+                if ((screenLayout != o.screenLayout) && requested->screenLayout) {
+                    return (screenLayout);
+                }
+            }
+
             if (version || o.version) {
                 if ((sdkVersion != o.sdkVersion) && requested->sdkVersion) {
                     return (sdkVersion);
@@ -1282,6 +1316,12 @@ struct ResTable_config
                 return false;
             }
         }
+        if (screenConfig != 0) {
+            if (settings.screenLayout != 0 && screenLayout != 0
+                && screenLayout != settings.screenLayout) {
+                return false;
+            }
+        }
         if (version != 0) {
             if (settings.sdkVersion != 0 && sdkVersion != 0
                 && sdkVersion != settings.sdkVersion) {
@@ -1310,13 +1350,13 @@ struct ResTable_config
 
     String8 toString() const {
         char buf[200];
-        sprintf(buf, "imsi=%d/%d lang=%c%c reg=%c%c orient=0x%02x touch=0x%02x dens=0x%02x "
-                "kbd=0x%02x nav=0x%02x input=0x%02x screenW=0x%04x screenH=0x%04x vers=%d.%d",
+        sprintf(buf, "imsi=%d/%d lang=%c%c reg=%c%c orient=%d touch=%d dens=%d "
+                "kbd=%d nav=%d input=%d scrnW=%d scrnH=%d layout=%d vers=%d.%d",
                 mcc, mnc,
                 language[0] ? language[0] : '-', language[1] ? language[1] : '-',
                 country[0] ? country[0] : '-', country[1] ? country[1] : '-',
                 orientation, touchscreen, density, keyboard, navigation, inputFlags,
-                screenWidth, screenHeight, sdkVersion, minorVersion);
+                screenWidth, screenHeight, screenLayout, sdkVersion, minorVersion);
         return String8(buf);
     }
 };
@@ -1401,7 +1441,7 @@ struct ResTable_type
  * This is the beginning of information about an entry in the resource
  * table.  It holds the reference to the name of this entry, and is
  * immediately followed by one of:
- *   * A Res_value structures, if FLAG_COMPLEX is -not- set.
+ *   * A Res_value structure, if FLAG_COMPLEX is -not- set.
  *   * An array of ResTable_map structures, if FLAG_COMPLEX is set.
  *     These supply a set of name/value mappings of data.
  */
@@ -1540,6 +1580,7 @@ public:
                  bool copyData=false);
     status_t add(Asset* asset, void* cookie,
                  bool copyData=false);
+    status_t add(ResTable* src);
 
     status_t getError() const;
 
@@ -1781,7 +1822,7 @@ public:
     void getLocales(Vector<String8>* locales) const;
 
 #ifndef HAVE_ANDROID_OS
-    void print() const;
+    void print(bool inclValues) const;
 #endif
 
 private:
@@ -1803,6 +1844,8 @@ private:
     status_t parsePackage(
         const ResTable_package* const pkg, const Header* const header);
 
+    void print_value(const Package* pkg, const Res_value& value) const;
+    
     mutable Mutex               mLock;
 
     status_t                    mError;
diff --git a/include/utils/TimeUtils.h b/include/utils/TimeUtils.h
deleted file mode 100644
index b19e021..0000000
--- a/include/utils/TimeUtils.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * Copyright (C) 2005 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_TIME_H
-#define ANDROID_TIME_H
-
-#include <time.h>
-#include <cutils/tztime.h>
-#include <stdint.h>
-#include <sys/types.h>
-#include <sys/time.h>
-#include <utils/String8.h>
-#include <utils/String16.h>
-
-namespace android {
-
-/*
- * This class is the core implementation of the android.util.Time java
- * class.  It doesn't implement some of the methods that are implemented
- * in Java.  They could be done here, but it's not expected that this class
- * will be used.  If that assumption is incorrect, feel free to update this
- * file.  The reason to do it here is to not mix the implementation of this
- * class and the jni glue code.
- */
-class Time
-{
-public:
-    struct tm t;
-
-    // this object doesn't own this string
-    const char *timezone;
-
-    enum {
-        SEC = 1,
-        MIN = 2,
-        HOUR = 3,
-        MDAY = 4,
-        MON = 5,
-        YEAR = 6,
-        WDAY = 7,
-        YDAY = 8
-    };
-
-    static int compare(Time& a, Time& b);
-
-    Time();
-
-    void switchTimezone(const char *timezone);
-    String8 format(const char *format, const struct strftime_locale *locale) const;
-    void format2445(short* buf, bool hasTime) const;
-    String8 toString() const;
-    void setToNow();
-    int64_t toMillis(bool ignoreDst);
-    void set(int64_t millis);
-
-    inline void set(int sec, int min, int hour, int mday, int mon, int year,
-            int isdst)
-    {
-        this->t.tm_sec = sec;
-        this->t.tm_min = min;
-        this->t.tm_hour = hour;
-        this->t.tm_mday = mday;
-        this->t.tm_mon = mon;
-        this->t.tm_year = year;
-        this->t.tm_isdst = isdst;
-#ifdef HAVE_TM_GMTOFF
-        this->t.tm_gmtoff = 0;
-#endif
-        this->t.tm_wday = 0;
-        this->t.tm_yday = 0;
-    }
-};
-
-}; // namespace android
-
-#endif // ANDROID_TIME_H
diff --git a/include/utils/backup_helpers.h b/include/utils/backup_helpers.h
deleted file mode 100644
index 137c5f1..0000000
--- a/include/utils/backup_helpers.h
+++ /dev/null
@@ -1,15 +0,0 @@
-#ifndef _UTILS_BACKUP_HELPERS_H
-#define _UTILS_BACKUP_HELPERS_H
-
-int back_up_files(int oldSnapshotFD, int oldDataStream, int newSnapshotFD,
-        char const* fileBase, char const* const* files, int fileCount);
-
-#define TEST_BACKUP_HELPERS 0
-
-#if TEST_BACKUP_HELPERS
-int backup_helper_test_empty();
-int backup_helper_test_four();
-int backup_helper_test_files();
-#endif
-
-#endif // _UTILS_BACKUP_HELPERS_H