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parulin 2025-07-31 03:16:49 -04:00
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developer/services/qfileexchgd.rst
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@ -33,7 +33,7 @@ Copying files between AppVMs
----------------------------
1. AppVM1 user runs *qvm-copy-to-vm* script (accessible from Dolphin file manager by right click on a “file(s)->Actions->Send to VM” menu). It calls */usr/lib/qubes/qubes_penctl new*, and it writes “new” request to its ``device/qpen`` xenstore key. *qfilexchgd* creates a new 1G file, makes vfat fs on it, and does block-attach so that this file is attached as ``/dev/xvdg`` in AppVM1.
1. AppVM1 user runs *qvm-copy-to-vm* script (accessible from Dolphin file manager by right click on a file(s): :menuselection:`Actions->Send to VM`). It calls */usr/lib/qubes/qubes_penctl new*, and it writes “new” request to its ``device/qpen`` xenstore key. *qfilexchgd* creates a new 1G file, makes vfat fs on it, and does block-attach so that this file is attached as ``/dev/xvdg`` in AppVM1.
2. AppVM1 mounts ``/dev/xvdg`` on ``/mnt/outgoing`` and copies requested files there, then unmounts it.
@ -49,7 +49,7 @@ Copying a single file between AppVM and a DisposableVM
In order to minimize attack surface presented by necessity to process virtual pendrive metadata sent by (potentially compromised and malicious) DisposableVM, AppVM<->DisposableVM file exchange protocol does not use any filesystem.
1. User in AppVM1 runs *qvm-open-in-dvm* (accessible from Dolphin file manager by right click on a “file->Actions->Open in DisposableVM” menu). *qvm-open-in-dvm*
1. User in AppVM1 runs *qvm-open-in-dvm* (accessible from Dolphin file manager by right click on a file: :menuselection:`Actions->Open in DisposableVM` menu). *qvm-open-in-dvm*
1. gets a new ``/dev/xvdg`` (just as described in previous paragraph)