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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
     systems.

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
             system.  If not specified, the file system chooses a reasonable
             maximum 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
             maximum 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 11.0-PRERELEASE         April 23, 2012         FreeBSD 11.0-PRERELEASE

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

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=tmpfs&manpath=FreeBSD+10.3-RELEASE+and+Ports>

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