bool nsFileInputStream::Deserialize(const InputStreamParams& aParams) { NS_ASSERTION(!mFD, "Already have a file descriptor?!"); NS_ASSERTION(!mDeferredOpen, "Deferring open?!"); NS_ASSERTION(!mFile, "Should never have a file here!"); NS_ASSERTION(!mPerm, "This should always be 0!"); if (aParams.type() != InputStreamParams::TFileInputStreamParams) { NS_WARNING("Received unknown parameters from the other process!"); return false; } const FileInputStreamParams& params = aParams.get_FileInputStreamParams(); const FileDescriptor& fd = params.file(); NS_WARN_IF_FALSE(fd.IsValid(), "Received an invalid file descriptor!"); if (fd.IsValid()) { PRFileDesc* fileDesc = PR_ImportFile(PROsfd(fd.PlatformHandle())); if (!fileDesc) { NS_WARNING("Failed to import file handle!"); return false; } mFD = fileDesc; } mBehaviorFlags = params.behaviorFlags(); mIOFlags = params.ioFlags(); return true; }
bool nsFileInputStream::Deserialize(const InputStreamParams& aParams, const FileDescriptorArray& aFileDescriptors) { NS_ASSERTION(!mFD, "Already have a file descriptor?!"); NS_ASSERTION(!mDeferredOpen, "Deferring open?!"); NS_ASSERTION(!mFile, "Should never have a file here!"); NS_ASSERTION(!mPerm, "This should always be 0!"); if (aParams.type() != InputStreamParams::TFileInputStreamParams) { NS_WARNING("Received unknown parameters from the other process!"); return false; } const FileInputStreamParams& params = aParams.get_FileInputStreamParams(); uint32_t fileDescriptorIndex = params.fileDescriptorIndex(); FileDescriptor fd; if (fileDescriptorIndex < aFileDescriptors.Length()) { fd = aFileDescriptors[fileDescriptorIndex]; NS_WARNING_ASSERTION(fd.IsValid(), "Received an invalid file descriptor!"); } else { NS_WARNING("Received a bad file descriptor index!"); } if (fd.IsValid()) { auto rawFD = fd.ClonePlatformHandle(); PRFileDesc* fileDesc = PR_ImportFile(PROsfd(rawFD.release())); if (!fileDesc) { NS_WARNING("Failed to import file handle!"); return false; } mFD = fileDesc; } mBehaviorFlags = params.behaviorFlags(); if (!XRE_IsParentProcess()) { // A child process shouldn't close when it reads the end because it will // not be able to reopen the file later. mBehaviorFlags &= ~nsIFileInputStream::CLOSE_ON_EOF; // A child process will not be able to reopen the file so this flag is // meaningless. mBehaviorFlags &= ~nsIFileInputStream::REOPEN_ON_REWIND; } mIOFlags = params.ioFlags(); return true; }
void nsPartialFileInputStream::Serialize(InputStreamParams& aParams, FileDescriptorArray& aFileDescriptors) { // Serialize the base class first. InputStreamParams fileParams; nsFileInputStream::Serialize(fileParams, aFileDescriptors); PartialFileInputStreamParams params; params.fileStreamParams() = fileParams.get_FileInputStreamParams(); params.begin() = mStart; params.length() = mLength; aParams = params; }
void nsPartialFileInputStream::Serialize(InputStreamParams& aParams) { // Serialize the base class first. InputStreamParams fileParams; nsFileInputStream::Serialize(fileParams); if (fileParams.type() != InputStreamParams::TFileInputStreamParams) { NS_ERROR("Base class serialize failed!"); return; } PartialFileInputStreamParams params; params.fileStreamParams() = fileParams.get_FileInputStreamParams(); params.begin() = mStart; params.length() = mLength; aParams = params; }