30 lines
1.2 KiB
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30 lines
1.2 KiB
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=============================
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``unionfs`` Union File System
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=============================
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This is at trivial test of the Union File System. See
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``nuttx/fs/unionfs/README.txt``. Dependencies:
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- ``CONFIG_DISABLE_MOUNTPOINT`` – Mountpoint support must not be
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disabled.
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- ``CONFIG_FS_ROMFS`` – ROMFS support is required.
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- ``CONFIG_FS_UNIONFS`` – Union File System support is required.
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Configuration options. Use the defaults if you are unsure of what you are doing:
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- ``CONFIG_EXAMPLES_UNIONFS`` – Enables the example.
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- ``CONFIG_EXAMPLES_UNIONFS_MOUNTPT`` – Mountpoint path for the Union File
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System.
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- ``CONFIG_EXAMPLES_UNIONFS_TMPA`` – Temporary mount point for file system
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``1``.
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- ``CONFIG_EXAMPLES_UNIONFS_TMPB`` – Temporary mount point for file system
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``2``.
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- ``CONFIG_EXAMPLES_UNIONFS_RAMDEVNO_A`` – ROMFS file system ``1`` RAM disk device
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number.
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- ``CONFIG_EXAMPLES_UNIONFS_RAMDEVNO_B`` – ROMFS file system ``2`` RAM disk device
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number.
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- ``CONFIG_EXAMPLES_UNIONFS_SECTORSIZE`` – ROM disk sector size.
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See :doc:`/platforms/sim/sim/boards/sim/index` page for a walk-through of the
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output of this text.
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