| ================= |
| RPMSG File System |
| ================= |
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| Once RPMsg link is available, we can use rpmsg file system to mount remote directories with the help of RPMsg file system drivers. |
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| Here we show an example of mounting and using a master file system path from remote side, it is as easy as using a local file system. |
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| Building |
| ======== |
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| At file system server side (the master), we need enable the ``CONFIG_FS_RPMSGFS_SERVER`` configuration. |
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| At file system client side (the remote), we need enable the ``CONFIG_FS_RPMSGFS`` configuration. |
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| Then we build the two sides accordingly. |
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| Running |
| ======= |
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| Using the following command to mount the master's ``/proc`` file system to ``/proc.master`` from the ``nsh`` sessino of the remote node. |
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| .. code:: console |
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| remote> mount -t rpmsgfs -o cpu=master,fs=/proc /proc.master |
| remote> cat /proc/uptime /proc.master/uptime |
| 39.06 |
| 39.06 |
| remote> |
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| Note the ``-o cpu=master,fs=/proc`` specifies the ``master`` node's ``/proc`` path as the source, the ``/proc.master`` is the mount point at remote side. All files under that mount point is actually hosted at the master side. The ``-t rpmsgfs`` selects the RPMsg file system driver to serve the operation. |
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