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Commit e41cb2e7 authored by Treehugger Robot's avatar Treehugger Robot Committed by Gerrit Code Review
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Merge "fastbootd: Add an update-super command to sync the super partition."

parents 3a6b3e44 38b3c7a1

fastboot/README.md

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@@ -186,10 +186,45 @@ The various currently defined names are: 
                        bootloader requiring a signature before

                        it will install or boot images.



    is-userspace        If the value is "yes", the device is running

                        fastbootd. Otherwise, it is running fastboot

                        in the bootloader.



Names starting with a lowercase character are reserved by this

specification.  OEM-specific names should not start with lowercase

characters.



## Logical Partitions



There are a number of commands to interact with logical partitions:



    update-super:%s:%s  Write the previously downloaded image to a super

                        partition. Unlike the "flash" command, this has

                        special rules. The image must have been created by

                        the lpmake command, and must not be a sparse image.

                        If the last argument is "wipe", then all existing

                        logical partitions are deleted. If no final argument

                        is specified, the partition tables are merged. Any

                        partition in the new image that does not exist in the

                        old image is created with a zero size.



                        In all cases, this will cause the temporary "scratch"

                        partition to be deleted if it exists.



    create-logical-partition:%s:%d

                        Create a logical partition with the given name and

                        size, in the super partition.



    delete-logical-partition:%s

                        Delete a logical partition with the given name.



    resize-logical-partition:%s:%d

                        Change the size of the named logical partition.



In addition, there is a variable to test whether a partition is logical:



    is-logical:%s       If the value is "yes", the partition is logical.

                        Otherwise the partition is physical.



## TCP Protocol v1

fastboot/constants.h

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@@ -33,6 +33,7 @@ 
#define FB_CMD_CREATE_PARTITION "create-logical-partition"

#define FB_CMD_DELETE_PARTITION "delete-logical-partition"

#define FB_CMD_RESIZE_PARTITION "resize-logical-partition"

#define FB_CMD_UPDATE_SUPER "update-super"



#define RESPONSE_OKAY "OKAY"

#define RESPONSE_FAIL "FAIL"

fastboot/device/commands.cpp

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@@ -336,3 +336,11 @@ bool ResizePartitionHandler(FastbootDevice* device, const std::vector<std::strin 
    }

    return device->WriteOkay("Partition resized");

}



bool UpdateSuperHandler(FastbootDevice* device, const std::vector<std::string>& args) {

    if (args.size() < 2) {

        return device->WriteFail("Invalid arguments");

    }

    bool wipe = (args.size() >= 3 && args[2] == "wipe");

    return UpdateSuper(device, args[1], wipe);

}

fastboot/device/commands.h

+1 −0
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@@ -44,3 +44,4 @@ bool FlashHandler(FastbootDevice* device, const std::vector<std::string>& args); 
bool CreatePartitionHandler(FastbootDevice* device, const std::vector<std::string>& args);

bool DeletePartitionHandler(FastbootDevice* device, const std::vector<std::string>& args);

bool ResizePartitionHandler(FastbootDevice* device, const std::vector<std::string>& args);

bool UpdateSuperHandler(FastbootDevice* device, const std::vector<std::string>& args);

fastboot/device/fastboot_device.cpp

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@@ -46,6 +46,7 @@ FastbootDevice::FastbootDevice() 
              {FB_CMD_CREATE_PARTITION, CreatePartitionHandler},

              {FB_CMD_DELETE_PARTITION, DeletePartitionHandler},

              {FB_CMD_RESIZE_PARTITION, ResizePartitionHandler},

              {FB_CMD_UPDATE_SUPER, UpdateSuperHandler},

      }),

      transport_(std::make_unique<ClientUsbTransport>()),

      boot_control_hal_(IBootControl::getService()) {}