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Commit 50ec71ea authored by Treehugger Robot's avatar Treehugger Robot Committed by Gerrit Code Review
Browse files

Merge "Zipalign: Avoid unnecessary padding"

parents f934e690 df73d1b4

tools/zipalign/ZipFile.cpp

+1 −1
Original line number Diff line number Diff line
@@ -530,7 +530,7 @@ status_t ZipFile::alignEntry(android::ZipEntry* pEntry, uint32_t alignTo){ 
    // If the alignment is not what was requested, add some padding in the extra

    // so the payload ends up where is requested.

    uint64_t alignDiff = alignTo - (expectedPayloadOffset % alignTo);

    if (alignDiff == 0)

    if (alignDiff == alignTo)

        return OK;



    return pEntry->addPadding(alignDiff);

tools/zipalign/tests/src/align_test.cpp

+29 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include <android-base/file.h>



using namespace android;

using namespace base;



static std::string GetTestPath(const std::string& filename) {

  static std::string test_data_dir = android::base::GetExecutableDirectory() + "/tests/data/";
@@ -26,6 +27,34 @@ TEST(Align, Unaligned) { 
  ASSERT_EQ(0, verified);

}



TEST(Align, DoubleAligment) {

  const std::string src = GetTestPath("unaligned.zip");

  const std::string tmp = GetTestPath("da_aligned.zip");

  const std::string dst = GetTestPath("da_d_aligner.zip");



  int processed = process(src.c_str(), tmp.c_str(), 4, true, false, 4096);

  ASSERT_EQ(0, processed);



  int verified = verify(tmp.c_str(), 4, true, false);

  ASSERT_EQ(0, verified);



  // Align the result of the previous run. Essentially double aligning.

  processed = process(tmp.c_str(), dst.c_str(), 4, true, false, 4096);

  ASSERT_EQ(0, processed);



  verified = verify(dst.c_str(), 4, true, false);

  ASSERT_EQ(0, verified);



  // Nothing should have changed between tmp and dst.

  std::string tmp_content;

  ASSERT_EQ(true, ReadFileToString(tmp, &tmp_content));



  std::string dst_content;

  ASSERT_EQ(true, ReadFileToString(dst, &dst_content));



  ASSERT_EQ(tmp_content, dst_content);

}



// Align a zip featuring a hole at the beginning. The

// hole in the archive is a delete entry in the Central

// Directory.