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Commit 6996cf25 authored by TreeHugger Robot's avatar TreeHugger Robot Committed by Automerger Merge Worker
Browse files

Merge "MTP: add a new parameter for cancelEvents function" into sc-dev am: b68d0515 

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/14910151

Change-Id: I856a52d11bdb4fc858c7663336f0e850c62c7e79
parents bc450b94 b68d0515

media/mtp/MtpFfsHandle.cpp

+10 −4
Original line number Diff line number Diff line
@@ -74,6 +74,7 @@ int MtpFfsHandle::getPacketSize(int ffs_fd) { 


MtpFfsHandle::MtpFfsHandle(int controlFd) {

    mControl.reset(controlFd);

    mBatchCancel = android::base::GetBoolProperty("sys.usb.mtp.batchcancel", false);

}



MtpFfsHandle::~MtpFfsHandle() {}
@@ -370,7 +371,7 @@ void MtpFfsHandle::cancelTransaction() { 
}



int MtpFfsHandle::cancelEvents(struct iocb **iocb, struct io_event *events, unsigned start,

        unsigned end) {

        unsigned end, bool is_batch_cancel) {

    // Some manpages for io_cancel are out of date and incorrect.

    // io_cancel will return -EINPROGRESS on success and does

    // not place the event in the given memory. We have to use
@@ -386,6 +387,10 @@ int MtpFfsHandle::cancelEvents(struct iocb **iocb, struct io_event *events, unsi 
        } else {

            num_events++;

        }

        if (is_batch_cancel && num_events == 1) {

            num_events = end - start;

            break;

        }

    }

    if (num_events != end - start) {

        ret = -1;
@@ -495,7 +500,8 @@ int MtpFfsHandle::receiveFile(mtp_file_range mfr, bool zero_packet) { 
                num_events += this_events;



                if (event_ret == -1) {

                    cancelEvents(mIobuf[i].iocb.data(), ioevs, num_events, mIobuf[i].actual);

                    cancelEvents(mIobuf[i].iocb.data(), ioevs, num_events, mIobuf[i].actual,

                            mBatchCancel);

                    return -1;

                }

                ret += event_ret;
@@ -512,7 +518,7 @@ int MtpFfsHandle::receiveFile(mtp_file_range mfr, bool zero_packet) { 
                }

            }

            if (short_packet) {

                if (cancelEvents(mIobuf[i].iocb.data(), ioevs, short_i, mIobuf[i].actual)) {

                if (cancelEvents(mIobuf[i].iocb.data(), ioevs, short_i, mIobuf[i].actual, false)) {

                    write_error = true;

                }

            }
@@ -613,7 +619,7 @@ int MtpFfsHandle::sendFile(mtp_file_range mfr) { 
                        &num_events) != ret) {

                error = true;

                cancelEvents(mIobuf[(i-1)%NUM_IO_BUFS].iocb.data(), ioevs, num_events,

                        mIobuf[(i-1)%NUM_IO_BUFS].actual);

                        mIobuf[(i-1)%NUM_IO_BUFS].actual, false);

            }

            has_write = false;

        }

media/mtp/MtpFfsHandle.h

+4 −1
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#ifndef _MTP_FFS_HANDLE_H

#define _MTP_FFS_HANDLE_H



#include <android-base/properties.h>

#include <android-base/unique_fd.h>

#include <linux/aio_abi.h>

#include <mutex>
@@ -57,6 +58,7 @@ protected: 
    static int getPacketSize(int ffs_fd);



    bool mCanceled;

    bool mBatchCancel;



    android::base::unique_fd mControl;

    // "in" from the host's perspective => sink for mtp server
@@ -76,7 +78,8 @@ protected: 
    int iobufSubmit(struct io_buffer *buf, int fd, unsigned length, bool read);



    // Cancel submitted requests from start to end in the given array. Return 0 or -1.

    int cancelEvents(struct iocb **iocb, struct io_event *events, unsigned start, unsigned end);

    int cancelEvents(struct iocb **iocb, struct io_event *events, unsigned start, unsigned end,

		     bool is_batch_cancel);



    // Wait for at minimum the given number of events. Returns the amount of data in the returned

    // events. Increments counter by the number of events returned.