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ios: Add ScopedBackgroundTask to more flock file access.

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Use ScopedBackgroundTask to prevent file lock termination from happening
when holding locked files in a shared AppGroup.

Bug: 1313555
Change-Id: Idc0105f8ecdb65c26214a7265a216b9d480ed01d
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3573184
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Commit-Queue: Justin Cohen <justincohen@chromium.org>
This commit is contained in:
Justin Cohen 2022-04-07 19:52:07 -04:00 committed by Crashpad LUCI CQ
parent f882d2af82
commit 646bba733b
3 changed files with 60 additions and 2 deletions
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8
client/crash_report_database_mac.mm
View File

@ -43,6 +43,10 @@
#include "util/misc/initialization_state_dcheck.h"
#include "util/misc/metrics.h"
#if BUILDFLAG(IS_IOS)
#include "util/ios/scoped_background_task.h"
#endif // BUILDFLAG(IS_IOS)
namespace crashpad {
namespace {
@ -182,6 +186,10 @@ class CrashReportDatabaseMac : public CrashReportDatabase {
//! \brief Stores the flock of the file for the duration of
//! GetReportForUploading() and RecordUploadAttempt().
base::ScopedFD lock_fd;
#if BUILDFLAG(IS_IOS)
//! \brief Obtain a background task assertion while a flock is in use.
internal::ScopedBackgroundTask ios_background_task{"UploadReportMac"};
#endif // BUILDFLAG(IS_IOS)
};
//! \brief Locates a crash report in the database by UUID.

31
client/settings.cc
View File

@ -71,6 +71,30 @@ void Settings::ScopedLockedFileHandle::Destroy() {
#else // BUILDFLAG(IS_FUCHSIA)
#if BUILDFLAG(IS_IOS)
Settings::ScopedLockedFileHandle::ScopedLockedFileHandle(
const FileHandle& value)
: ScopedGeneric(value) {
ios_background_task_ = std::make_unique<internal::ScopedBackgroundTask>(
"ScopedLockedFileHandle");
}
Settings::ScopedLockedFileHandle::ScopedLockedFileHandle(
Settings::ScopedLockedFileHandle&& rvalue) {
ios_background_task_.reset(rvalue.ios_background_task_.release());
reset(rvalue.release());
}
Settings::ScopedLockedFileHandle& Settings::ScopedLockedFileHandle::operator=(
Settings::ScopedLockedFileHandle&& rvalue) {
ios_background_task_.reset(rvalue.ios_background_task_.release());
reset(rvalue.release());
return *this;
}
#endif // BUILDFLAG(IS_IOS)
namespace internal {
// static
@ -207,6 +231,10 @@ Settings::ScopedLockedFileHandle Settings::MakeScopedLockedFileHandle(
}
return ScopedLockedFileHandle(scoped.release(), base::FilePath());
#else
// It's important to create the ScopedLockedFileHandle before calling
// LoggingLockFile on iOS, so a ScopedBackgroundTask is created *before*
// the LoggingLockFile call below.
ScopedLockedFileHandle handle(kInvalidFileHandle);
if (scoped.is_valid()) {
if (LoggingLockFile(
scoped.get(), locking, FileLockingBlocking::kBlocking) !=
@ -214,7 +242,8 @@ Settings::ScopedLockedFileHandle Settings::MakeScopedLockedFileHandle(
scoped.reset();
}
}
return ScopedLockedFileHandle(scoped.release());
handle.reset(scoped.release());
return handle;
#endif
}

23
client/settings.h
View File

@ -24,6 +24,10 @@
#include "util/misc/initialization_state.h"
#include "util/misc/uuid.h"
#if BUILDFLAG(IS_IOS)
#include "util/ios/scoped_background_task.h"
#endif // BUILDFLAG(IS_IOS)
namespace crashpad {
namespace internal {
@ -153,7 +157,24 @@ class Settings {
FileHandle handle_;
base::FilePath lockfile_path_;
};
#else // BUILDFLAG(IS_FUCHSIA)
#elif BUILDFLAG(IS_IOS)
// iOS needs to use ScopedBackgroundTask anytime a file lock is used.
class ScopedLockedFileHandle
: public base::ScopedGeneric<FileHandle,
internal::ScopedLockedFileHandleTraits> {
public:
using base::ScopedGeneric<
FileHandle,
internal::ScopedLockedFileHandleTraits>::ScopedGeneric;
ScopedLockedFileHandle(const FileHandle& value);
ScopedLockedFileHandle(ScopedLockedFileHandle&& rvalue);
ScopedLockedFileHandle& operator=(ScopedLockedFileHandle&& rvalue);
private:
std::unique_ptr<internal::ScopedBackgroundTask> ios_background_task_;
};
#else
using ScopedLockedFileHandle =
base::ScopedGeneric<FileHandle, internal::ScopedLockedFileHandleTraits>;
#endif // BUILDFLAG(IS_FUCHSIA)