Use the `cgi-io` scope to check for permission to execute the requested
command (`upload`, `backup`) and the `file` scope to check path
permissions.
The reasoning of this change is that `cgi-io` is usually used in
conjunction with `rpcd-mod-file` to transfer large file data out
of band and `rpcd-mod-file` already uses the `file` scope to manage
file path access permissions. After this change, both `rpc-mod-file`
and `cgi-io` can share the same path acl rules.
Write access to a path can be granted by using an ubus call in the
following form:
ubus call session grant '{
"ubus_rpc_session": "...",
"scope": "file",
"objects": [
[ "/var/lib/uploads/*", "write" ]
]
}'
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
c8a86c8c8e