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Change-Id: I5deef665ab374491c0f498b498971abd525d1111
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Set up a loop to keep trying to open / read the MTP device so that
MTP will work even if the device is unplugged during boot or
unplugged and replugged in.
Change-Id: I0d3a3b7c91ce84a8cbed16caa4b15efee35b3641
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Unless MTP debug logging is enabled, you will miss the error and
will not know that something went wrong in the log.
Change-Id: I51f4758b415eb38e808ec8b1c9788b505bf88c65
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Change-Id: Iac7852a4fb2add5744d5ea424d6ad5a82828f102
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Implement a pipe between TWRP and MTP to allow TWRP to tell MTP
to remove storage partitions as they become unavailable (e.g.
during a wipe, unmount, etc) instead of disabling MTP completely.
This includes some fixes and improvements in destructors to
properly remove / delete various items. This also means that we
will not be toggling adb off and on quite as often.
I do not like that we had to add another thread, but we were
unable to use select() on the mtp_usb character device because
this device does not support polling. Select always returned
indicating that the mtp file descriptor was ready to be read and
the resulting read would block. The read block prevented us from
being able to include reading of the pipe between TWRP and MTP in
the main MTP thread.
We might want to add a return pipe letting TWRP know if the
removal of the storage device was successful, but I am not sure
how we want to implement this. It would invovle timeouts in both
TWRP and MTP to ensure that we returned a failure indicator in a
timely manner to TWRP and prevent deleting the storage device in
the case of a failure. Right now we make no attempt to ensure that
an MTP operation is underway like a large file transfer, but we
were not doing anything like this in the past. In some respects we
have limited control over what happens. If the user installs a
zip that unmounts a storage partition, we will not know about the
change in storage status anyway. Regular Android does not have
these troubles because partitions rarely get unmounted like in
recovery. At some point, we have to hold the user accountable for
performing actions that may remove a storage partition while they
are using MTP anyway.
Ideally we do not want to toggle the USB IDs and thus toggle adb
off and on during early boot, but I am not sure what the best way
to handle that at this time.
Change-Id: I9343e5396bf6023d3b994de1bf01ed91d129bc14
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Files and folders that we create during backups, copy log, or MTP
operations often do not have the proper uid/gid/contexts assigned.
We will attempt to read the proper contexts from the settings
storage path and assign those same contexts to any files or dirs
that we create.
Change-Id: I769f9479854122b49b499de2175e6e2d026f8afd
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Change-Id: If8114b5eac741db6c512fb35cb48e3825c2ff098
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Do some error checking of lstat calls and better handle those
errors.
Use lstat instead of dirent to check if an item is a directory
because dirent does not return the correct item type when using
exfat-fuse.
Change-Id: I0d008aff55a0e0b4fbeae24cf8d0c04453b7b77e
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Big thanks to Dees_Troy for helping with the implementation.
Change-Id: I6c9c522b9c9de5dc139e2ecb0141008182ba07f0
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