Merge "Sanity check LOCAL_SRC_FILES_EXCLUDE"
diff --git a/tools/signapk/SignApk.java b/tools/signapk/SignApk.java
index 740a343..397f8cc 100644
--- a/tools/signapk/SignApk.java
+++ b/tools/signapk/SignApk.java
@@ -476,7 +476,7 @@
* more efficient.
*/
private static void copyFiles(Manifest manifest, JarFile in, JarOutputStream out,
- long timestamp, int alignment) throws IOException {
+ long timestamp, int defaultAlignment) throws IOException {
byte[] buffer = new byte[4096];
int num;
@@ -515,6 +515,7 @@
offset += 4;
firstEntry = false;
}
+ int alignment = getStoredEntryDataAlignment(name, defaultAlignment);
if (alignment > 0 && (offset % alignment != 0)) {
// Set the "extra data" of the entry to between 1 and
// alignment-1 bytes, to make the file data begin at
@@ -555,6 +556,24 @@
}
}
+ /**
+ * Returns the multiple (in bytes) at which the provided {@code STORED} entry's data must start
+ * relative to start of file or {@code 0} if alignment of this entry's data is not important.
+ */
+ private static int getStoredEntryDataAlignment(String entryName, int defaultAlignment) {
+ if (defaultAlignment <= 0) {
+ return 0;
+ }
+
+ if (entryName.endsWith(".so")) {
+ // Align .so contents to memory page boundary to enable memory-mapped
+ // execution.
+ return 4096;
+ } else {
+ return defaultAlignment;
+ }
+ }
+
private static class WholeFileSignerOutputStream extends FilterOutputStream {
private boolean closing = false;
private ByteArrayOutputStream footer = new ByteArrayOutputStream();