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CONFIG_DEVFS_FS: /dev file system support (OBSOLETE)

General informations

The Linux kernel configuration item CONFIG_DEVFS_FS:

• prompt: /dev file system support (OBSOLETE)
• type: bool
• depends on: CONFIG_EXPERIMENTAL
• defined in fs/Kconfig
• found in Linux kernels: 2.6.0–2.6.12

Help text

This is support for devfs, a virtual file system (like /proc) which provides the file system interface to device drivers, normally found in /dev. Devfs does not depend on major and minor number allocations. Device drivers register entries in /dev which then appear automatically, which means that the system administrator does not have to create character and block special device files in the /dev directory using the mknod command (or MAKEDEV script) anymore.

This is work in progress. If you want to use this, you *must* read the material in Documentation/filesystems/devfs/, especially the file README there.

Note that devfs no longer manages /dev/pts! If you are using UNIX98 ptys, you will also need to mount the /dev/pts filesystem (devpts).

Note that devfs has been obsoleted by udev, http://www.kernel.org/pub/linux/utils/kernel/hotplug/. It has been stripped down to a bare minimum and is only provided for legacy installations that use its naming scheme which is unfortunately different from the names normal Linux installations use.

If unsure, say N.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb fs "devfs" : CONFIG_DEVFS_FS : fs/devfs/base.c

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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