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Commit a9b3c3d6 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

libfiemap_writer: test pinned file bit 



The pinned file should have NOCOW_FL flag.

Bug: 129803146
Change-Id: Idaf5bdbbdcce1c3805cd16ddb0c1c7f1df87dcfb
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@google.com>
parent 5ccb6a5c

fs_mgr/libfiemap_writer/fiemap_writer.cpp

+17 −1
Original line number Diff line number Diff line
@@ -407,9 +407,25 @@ static bool IsFilePinned(int file_fd, const std::string& file_path, uint32_t fs_ 
#define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32)

#endif



    // f2fs: export FS_NOCOW_FL flag to user

    uint32_t flags;

    int error = ioctl(file_fd, FS_IOC_GETFLAGS, &flags);

    if (error < 0) {

        if ((errno == ENOTTY) || (errno == ENOTSUP)) {

            PLOG(ERROR) << "Failed to get flags, not supported by kernel: " << file_path;

        } else {

            PLOG(ERROR) << "Failed to get flags: " << file_path;

        }

        return false;

    }

    if (!(flags & FS_NOCOW_FL)) {

        LOG(ERROR) << "It is not pinned: " << file_path;

        return false;

    }



    // F2FS_IOC_GET_PIN_FILE returns the number of blocks moved.

    uint32_t moved_blocks_nr;

    int error = ioctl(file_fd, F2FS_IOC_GET_PIN_FILE, &moved_blocks_nr);

    error = ioctl(file_fd, F2FS_IOC_GET_PIN_FILE, &moved_blocks_nr);

    if (error < 0) {

        if ((errno == ENOTTY) || (errno == ENOTSUP)) {

            PLOG(ERROR) << "Failed to get file pin status, not supported by kernel: " << file_path;