|MOUNT_TMPFS(8)||System Manager's Manual||MOUNT_TMPFS(8)|
mount_tmpfscommand attaches an instance of the efficient memory file system to the global file system namespace. The tmpfs parameter only exists for compatibility with the other mount commands and is ignored. The directory specified by mount_point is converted to an absolute path before use and its attributes (owner, group and mode) are inherited unless explicitly overridden by the options described below.
The following options are supported:
-oflag followed by a comma-separated string of options. See the mount(8) man page for possible options and their meanings.
Every option that accepts a numerical value as its argument can take a trailing ‘b’ to indicate bytes (the default), a ‘k’ to indicate kilobytes, a ‘M’ to indicate megabytes or a ‘G’ to indicate gigabytes. Note that both lowercase and uppercase forms of these letters are allowed.
# mount -t tmpfs tmpfs /tmp
The following command mounts a tmpfs instance over the /mnt directory, setting a 20 megabytes limit in space, owned by the ‘joe’ user and belonging to the ‘users’ group, with a restricted 0700 mode:
# mount -t tmpfs -o -s20M -o -ujoe -o -gusers -o -m0700 tmpfs /mnt
A corresponding fstab(5) entry, using "swap" as a place holder:
swap /mnt tmpfs rw,-s20M,-ujoe,-gusers,-m0700 0 0
mount_tmpfsutility first appeared in NetBSD 4.0 and OpenBSD 5.5.
-n) will prevent this; the default value for this setting is also often adjusted to an adequate value to resolve this.
|November 16, 2014||OpenBSD-current|