查看“Configfs”的源代码

== Introduction ==
'''Configfs'''<ref name=configfsdoc>{{CodeSource | Linux kernel | Documentation/filesystems/configfs/configfs.txt}}</ref> is a RAM-based filesystem that provides the converse of sysfs functionality.

While sysfs provides a filesystem-based view of kernel objects, configfs is a filesystem-based manager of kernel objects or config_items (every object in configfs is a config_item). This means that kernel objects can be created, managed and destroyed from the user space.

== Installing configs on your target board ==
'''Configfs''' can be enabled and ready to be used in all STM32MPU Embedded Software distribution, via the Linux<sup>&reg;</sup> kernel configuration '''CONFIG_CONFIGFS_FS''' (set to yes by default):
 Symbol: '''CONFIGFS_FS'''
 Location:
   File systems --->
     Pseudo filesystems -->
       {{highlight|-*- Userspace-driven configuration filesystem}}

Please refer to [[Menuconfig or how to configure kernel]] article for instructions for modifying the configuration and recompiling the Linux kernel image in the Distribution Package context.

== Getting started ==
=== How to mount configfs ===
Use the following command to mount '''Configfs''' at ''/sys/kernel/config'':
 {{Board$}} mount -t configfs none /sys/kernel/config

=== How to set and manage configfs from Linux kernel drivers and user space ===
Refer to the Linux documentation<ref name=configfsdoc/> for detailed information.

{{ReviewsComments|Following link to be confirmed when fully completed}}
Configfs is used by the USB framwework. Refer to [[USB_overview#API_description | USB API description]] for an example.

== References ==
<references />

<noinclude>
[[Category:OpenSTLinux filesystem|02]]
{{PublicationRequestId | 10267 | 2019-01-14 | AnneJ}}
</noinclude>