devfs.conf(5)
NAME
devfs.conf - boot-time devfs configuration information
DESCRIPTION
- The devfs.conf file provides an easy way to set ownership
- and permissions, or create links for devices available at boot.
- It does not work for devices plugged in and out after the
- system is up
and running, e.g. USB devices. See devfs.rules(5) for set - ting ownership
and permissions for all device nodes, and usbd.conf(5) for - actions to be
taken when USB devices are attached or detached. - Lines starting with a hash sign (`#') and empty lines are
- ignored. The
lines that specify devfs.conf rules consist of three parame - ters separated
by whitespace: - action The action to take for the device. The action names
- are only
- significant to the first unique character.
- devname
- The name of the device created by devfs(5).
- arg The argument of the action.
- The actions currently supported are:
- link This action creates a symbolic link named arg that
- points to
- devname, the name of the device created by devfs(5).
- own This action changes the ownership of devname. The
- arg parameter
- must be in the form of an owner:group pair, in the
- same format
used by chown(8). - perm This action changes the permissions of devname. The
- arg parame
- ter must be a mode as explained in chmod(1).
FILES
/etc/devfs.conf
/usr/share/examples/etc/devfs.conf
EXAMPLES
- To create a /dev/cdrom link that points to the first SCSI(4)
- or
atapicam(4) CD-ROM, the following may be added to - devfs.conf:
link cd0 cdrom- Similarly, to link /dev/cdrom to the first ATAPI CD-ROM de
- vice, the following action may be used:
link acd0 cdrom- To set the owner of a device, the own action may be speci
- fied:
own cd0 root:cdrom- To set the permissions of a device, a perm action should be
- used:
perm cd0 0660
SEE ALSO
chmod(1), devfs(5), devfs.rules(5), usbd.conf(5), chown(8)
AUTHORS
- This manual page was written by Roland Smith
- <rsmith@xs4all.nl>.
- BSD May 17, 2005