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devfs(4fs)

devfs(4FS)                       File Systems                       devfs(4FS)

NAME
       devfs - Devices file system

DESCRIPTION
       The  devfs filesystem manages a name space of all devices under the So‐
       laris operating system and is mounted during boot on the /devices  name
       space.


       The  /devices  name  space is dynamic and reflects the current state of
       accessible devices under the Solaris operating system. The names of all
       attached device instances are present under /devices.


       The content under /devices is under the exclusive control of the  devfs
       filesystem and cannot be changed.


       The system may be configured to include a device in one of two ways:

           o      By  means  of dynamic reconfiguration (DR), using, for exam‐
                  ple, cfgadm(8).


           o      For devices driven by driver.conf(5) enumeration,  edit  the
                  driver.conf  file to add a new entry, then use update_drv(8)
                  to cause the system to  re-read  the  driver.conf  file  and
                  thereby enumerate the instance.



       The  device  may  be attached through a number of system calls and pro‐
       grams, including open(2), stat(2) and ls(1). During device attach,  the
       device driver typically creates minor nodes corresponding to the device
       via ddi_create_minor_node(9F). If the attach is successful, one or more
       minor nodes referring to the device are created under /devices.


       Operations  like  mknod(2),  mkdir(2) and creat(2) are not supported in
       /devices.

FILES
       /devices    Mount point for devfs file system


SEE ALSO
       dev(4FS), devfsadm(8), attach(9E)

NOTES
       The /devices name space cannot be unmounted.


       All content at or below the /devices name space  is  an  implementation
       artifact  and subject to incompatible change or removal without notifi‐
       cation.

Oracle Solaris 11.4               14 Jun 2024                       devfs(4FS)
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