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TMPFS(5)		  FreeBSD File Formats Manual		      TMPFS(5)

NAME
     tmpfs -- efficient	memory file system

SYNOPSIS
     To	compile	this driver into the kernel, place the following line in your
     kernel configuration file:

	   options TMPFS

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

	   tmpfs_load="YES"

DESCRIPTION
     The tmpfs driver will permit the FreeBSD kernel to	access tmpfs file sys-
     tems.

OPTIONS
     The following options are available when mounting tmpfs file systems:

     gid     Specifies the group ID of the root	inode of the file system.
	     Defaults to the mount point's GID.

     uid     Specifies the user	ID of the root inode of	the file system.
	     Defaults to the mount point's UID.

     mode    Specifies the mode	(in octal notation) of the root	inode of the
	     file system.  Defaults to the mount point's mode.

     inodes  Specifies the maximum number of nodes available to	the file sys-
	     tem.  If not specified, the file system chooses a reasonable max-
	     imum based	on the file system size, which can be limited with the
	     size option.

     size    Specifies the total file system size in bytes.  If	zero (the
	     default) or a value larger	than SIZE_MAX -	PAGE_SIZE is given,
	     the available amount of memory (including main memory and swap
	     space) will be used.

     maxfilesize
	     Specifies the maximum file	size in	bytes.	Defaults to the	maxi-
	     mum possible value.

EXAMPLES
     To	mount a	tmpfs memory file system:

	   mount -t tmpfs tmpfs	/tmp

SEE ALSO
     nmount(2),	unmount(2), fstab(5), mdmfs(8),	mount(8)

HISTORY
     The tmpfs driver first appeared in	FreeBSD	7.0.

AUTHORS
     The tmpfs kernel implementation was written by Julio M. Merino Vidal
     <jmmv@NetBSD.org> as a Google SoC project.

     Rohit Jalan and others ported it from NetBSD to FreeBSD.

     This manual page was written by Xin LI <delphij@FreeBSD.org>.

BUGS
     Some file system mount time options may not be well-supported.

FreeBSD	10.1			April 23, 2012			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | SEE ALSO | HISTORY | AUTHORS | BUGS

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=tmpfs&sektion=5&manpath=FreeBSD+9.1-RELEASE>

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