Howtoaddtheselinuxpolicyaccessforthenewcreatedlin

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When you create the linux file node, such as “dev/nfccard0”, you must add the selinux policy for it, or the application can not get the permit to access. this is an example for the system_server to accecc the dev/nfccard0 file node. we c

When you create the linux file node, such as “dev/nfccard0”, you must add the selinux policy for it, or the application can not get the permit to access.

this is an example for the system_server to accecc the dev/nfccard0 file node.

we can do the following three things to mak the system work smoothly.

1 define the file type

in the file.te add the below line

type nfccard_device,dev_type

2 define the file context

in the file_context.te add the below line

/dev/nfccard0 u:object_r:nfccard_devicd:s0

3 allow the system_server to access it.

Allow system_server nfccard_device:chr_file rw_file_perms

Or

Allow system_server nfccard_device:chr_file {read write open getattr ioctl}

there are many file type , {socket, binder, property,etc}, we must do carefully to avoid influence the system.

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