xenstore-chmod [OPTION]... [KEY] [PERM]...
Sets the permissions of the Xenstore KEY.
PERM has the format LD, where L is a letter for the type of permission and D is the corresponding domain ID.
The types of permission are:
read and write (both)
The first permission entry is the domain owning the key (the owner) and the permissions for any domain not explicitly listed in subsequent entries. The key owner always has full access (read, write, and set permissions).
Apply the permissions to the key and all its children.
Apply the permissions to the key and all its parents.
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