1.\" $NetBSD: mount_chfs.8,v 1.5 2021/06/07 21:44:35 dholland Exp $ 2.\" 3.\" Copyright (c) 2011 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 16.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 19.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25.\" POSSIBILITY OF SUCH DAMAGE. 26.\" 27.Dd June 7, 2021 28.Dt MOUNT_CHFS 8 29.Os 30.Sh NAME 31.Nm mount_chfs 32.Nd mount a CHFS flash file system 33.Sh SYNOPSIS 34.Nm 35.Sh DESCRIPTION 36Mounts a flash file system from a 37.Xr flash 4 38device. 39CHFS file systems can be only mounted from flash devices. 40For regular block devices like SSD drives or USB drives, 41please use a regular file system. 42The file system will be created during the first mount. 43CHFS stands for Chip File System. 44.Pp 45This command is normally executed by 46.Xr mount 8 47at boot time. 48.Pp 49The options are as follows: 50.Bl -tag -width Ds 51.It Fl o 52Options are specified with a 53.Fl o 54flag followed by a comma-separated string of options. 55See the 56.Xr mount 8 57man page for possible options and their meanings. 58.El 59.Sh EXAMPLES 60.Dl mount_chfs /dev/flash0 /mnt 61.Sh SEE ALSO 62.Xr flash 4 , 63.Xr fstab 5 , 64.Xr mount 8 , 65.Xr flash 9 66.Sh HISTORY 67A 68.Nm 69utility appeared in 70.Nx 6.0 . 71CHFS was originally called ChewieFS during development. 72The name was changed to avoid legal issues and to have a more 73neutral name. 74.Sh AUTHORS 75CHFS was developed at the 76.An Department of Software Engineering, University of Szeged, Hungary. 77.Sh BUGS 78CHFS has a few known bugs as of 2011. 79Writing the FS full can cause problems. 80Truncating a file and growing it again can cause the new bytes 81not having all zeroes, but filled with the old content instead. 82