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NULLFS(4)		     Kernel Interfaces Manual		       NULLFS(4)

NAME
     nullfs -- null file system

SYNOPSIS
     To enable support for this driver, place the following line in the kernel
     configuration file:

	   options NULLFS

     Alternatively, to load the driver as a module at boot time, place the
     following line in loader.conf(5):

	   nullfs_load="YES"

DESCRIPTION
     The  nullfs  driver will permit the FreeBSD kernel to mount a loopback file
     system sub-tree.

EXAMPLES
     To mount a nullfs file system:

	   mount_nullfs /usr/ports /home/devel/ports

     It is also possible to define an entry in fstab(5) that looks similar to:

     /usr/ports      /home/devel/ports	     nullfs	     rw      0	     0

SEE ALSO
     fstab(5), mount_nullfs(8)

HISTORY
     The nullfs layer first appeared in 4.4BSD.

AUTHORS
     The nullfs kernel implementation was written by John Heideman.

     This manual page was written by Daniel Gerzo <danger@FreeBSD.org>.

FreeBSD ports 15.quarterly	 March 15, 2022 		       NULLFS(4)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=nullfs&sektion=4&manpath=FreeBSD+15.1-RELEASE+and+Ports.quarterly>

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