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Refactor file_store to use smart pointers

Browse Source 
Bug: b/119276649
Merge from: http://go/wvgerrit/66367
Test: Android, CE CDM, Linux unit tests

The FileSystem interface as it exists expects an Open for a file and
then a Close when finished. However, the Close doesn't delete the file
itself and depending on the platform, the underlying impl_ as well,
leading to a memory leak. To fix this leak as well as harden against
future memory issues, this change refactors the interface to shift away
from raw pointers and towards smart pointers.

Change-Id: I7a7132ea95cd3775796a540f510b698f4f27dd24
This commit is contained in:
Srujan Gaddam
2018-11-14 16:59:00 -08:00
parent 5d360abd4b
commit 896ce2b5aa
15 changed files with 335 additions and 362 deletions
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6
libwvdrmengine/cdm/core/src/device_files.cpp
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@@ -1152,7 +1152,7 @@ bool DeviceFiles::StoreFileRaw(const std::string& name,
path += name;
File* file =
auto file =
file_system_->Open(path, FileSystem::kCreate | FileSystem::kTruncate);
if (!file) {
LOGW("DeviceFiles::StoreFileRaw: File open failed: %s", path.c_str());
@@ -1160,7 +1160,6 @@ bool DeviceFiles::StoreFileRaw(const std::string& name,
}
ssize_t bytes = file->Write(serialized_file.data(), serialized_file.size());
file->Close();
if (bytes != static_cast<ssize_t>(serialized_file.size())) {
LOGW(
@@ -1208,7 +1207,7 @@ bool DeviceFiles::RetrieveHashedFile(
return false;
}
File* file = file_system_->Open(path, FileSystem::kReadOnly);
auto file = file_system_->Open(path, FileSystem::kReadOnly);
if (!file) {
return false;
}
@@ -1216,7 +1215,6 @@ bool DeviceFiles::RetrieveHashedFile(
std::string serialized_hash_file;
serialized_hash_file.resize(bytes);
bytes = file->Read(&serialized_hash_file[0], serialized_hash_file.size());
file->Close();
if (bytes != static_cast<ssize_t>(serialized_hash_file.size())) {
LOGW("DeviceFiles::RetrieveHashedFile: read failed");