File Systems                                           devfs(7FS)



NAME
     devfs - Devices file system

DESCRIPTION
     The devfs filesystem manages a name  space  of  all  devices
     under  the Solaris operating environment and is mounted dur-
     ing boot on the /devices name space.


     The /devices name space is dynamic and reflects the  current
     state  of  accessible  devices  under  the Solaris operating
     environment. 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:
       By means of dynamic reconfiguration (DR), using, for exam-
       ple, cfgadm(1M).
       For devices driven by driver.conf(4) enumeration, edit the
       driver.conf   file   to   add   a   new  entry,  then  use
       updatedrv(1M)  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  programs,  including open(2), stat(2) and ls(1). During
     device attach, the device  driver  typically  creates  minor
     nodes      corresponding      to      the     device     via
     ddicreateminornode(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 sup-
     ported in /devices.

FILES
     /devices    Mount point for devfs file system


SEE ALSO
     devfsadm(1M), vfstab(4), attach(9E)

NOTES
     The /devices name space cannot be unmounted.





SunOS 5.11          Last change: 26 Oct 2004                    1






File Systems                                           devfs(7FS)



     All content at or below the /devices name space is an imple-
     mentation  artifact  and  subject  to incompatible change or
     removal without notification.




















































SunOS 5.11          Last change: 26 Oct 2004                    2