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full(4d)

full(4D)                  Device Drivers & /dev files                 full(4D)

NAME
       full - the full file, also called the full device

SYNOPSIS
       /dev/full

DESCRIPTION
       Reads  from  a full special file always return a buffer full of zeroes.
       The file is of infinite length.


       Data written on the full special file, /dev/full, is discarded, failure
       is returned, and errno is set to ENOSPC.


       Mapping a full special file creates an address reservation of a  length
       equal  to the length of the mapping, and rounded up to the nearest page
       size as returned by sysconf(3C).  No  resources  are  consumed  by  the
       reservation.  Mappings can be placed in the resulting address range via
       subsequent calls to mmap with the MAP_FIXED option set.

FILES
       /dev/full


SEE ALSO
       mmap(2), sysconf(3C), null(4D), zero(4D)

HISTORY
       The /dev/full device was added to Solaris in the Oracle Solaris 11.4.51
       release.

Oracle Solaris 11.4               15 Mar 2024                         full(4D)
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