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Diffstat (limited to 'sbin/mount_fdesc/mount_fdesc.8')
| -rw-r--r-- | sbin/mount_fdesc/mount_fdesc.8 | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/sbin/mount_fdesc/mount_fdesc.8 b/sbin/mount_fdesc/mount_fdesc.8 deleted file mode 100644 index 2da897b5951..00000000000 --- a/sbin/mount_fdesc/mount_fdesc.8 +++ /dev/null @@ -1,162 +0,0 @@ -.\" $OpenBSD: mount_fdesc.8,v 1.16 2003/06/02 20:06:15 millert Exp $ -.\" $NetBSD: mount_fdesc.8,v 1.6 1995/12/17 18:50:19 ghudson Exp $ -.\" -.\" Copyright (c) 1992, 1993, 1994 -.\" The Regents of the University of California. All rights reserved. -.\" -.\" This code is derived from software donated to Berkeley by -.\" Jan-Simon Pendry. -.\" -.\" Redistribution and use in source and binary forms, with or without -.\" modification, are permitted provided that the following conditions -.\" are met: -.\" 1. Redistributions of source code must retain the above copyright -.\" notice, this list of conditions and the following disclaimer. -.\" 2. Redistributions in binary form must reproduce the above copyright -.\" notice, this list of conditions and the following disclaimer in the -.\" documentation and/or other materials provided with the distribution. -.\" 3. Neither the name of the University nor the names of its contributors -.\" may be used to endorse or promote products derived from this software -.\" without specific prior written permission. -.\" -.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND -.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE -.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL -.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS -.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) -.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY -.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF -.\" SUCH DAMAGE. -.\" -.\" @(#)mount_fdesc.8 8.2 (Berkeley) 3/27/94 -.\" -.Dd March 27, 1994 -.Dt MOUNT_FDESC 8 -.Os -.Sh NAME -.Nm mount_fdesc -.Nd mount the file-descriptor file system -.Sh SYNOPSIS -.Nm mount_fdesc -.Op Fl o Ar options -.Ar fdesc -.Ar mount_point -.Sh DESCRIPTION -The -.Nm -command attaches an instance of the per-process file descriptor -namespace to the global filesystem namespace. -The conventional mount point is -.Pa /dev -and the filesystem should be union mounted in order to augment, -rather than replace, the existing entries in -.Pa /dev . -This command is invoked by -.Xr mount 8 -when using the syntax -.Bd -ragged -offset 4n -.Nm mount Op options --t fdesc -.Ar fdesc Ar mount_point -.Ed -.Pp -This command is normally executed by -.Xr mount 8 -at boot time. -.Pp -The options are as follows: -.Bl -tag -width Ds -.It Fl o Ar options -Options are specified with a -.Fl o -flag followed by a comma separated string of options. -See the -.Xr mount 8 -man page for possible options and their meanings. -.El -.Pp -The contents of the mount point are -.Pa fd , -.Pa stderr , -.Pa stdin , -.Pa stdout -and -.Pa tty . -.Pp -.Pa fd -is a directory whose contents -appear as a list of numbered files -which correspond to the open files of the process reading the -directory. -The files -.Pa /dev/fd/0 -through -.Pa /dev/fd/# -refer to file descriptors which can be accessed through the file -system. -If the file descriptor is open and the mode the file is being opened -with is a subset of the mode of the existing descriptor, the call: -.Bd -literal -offset indent -fd = open("/dev/fd/0", mode); -.Ed -.Pp -and the call: -.Bd -literal -offset indent -fd = fcntl(0, F_DUPFD, 0); -.Ed -.Pp -are equivalent. -.Pp -The files -.Pa /dev/stdin , -.Pa /dev/stdout -and -.Pa /dev/stderr -appear as symlinks to the relevant entry in the -.Pa /dev/fd -sub-directory. -Opening them is equivalent to the following calls: -.Bd -literal -offset indent -fd = fcntl(STDIN_FILENO, F_DUPFD, 0); -fd = fcntl(STDOUT_FILENO, F_DUPFD, 0); -fd = fcntl(STDERR_FILENO, F_DUPFD, 0); -.Ed -.Pp -Flags to the -.Xr open 2 -call other than -.Dv O_RDONLY , -.Dv O_WRONLY -and -.Dv O_RDWR -are ignored. -.Pp -The -.Pa /dev/tty -entry is an indirect reference to the current process's controlling terminal. -It appears as a named pipe (FIFO) but behaves in exactly the same way as -the real controlling terminal device. -.Sh FILES -.Bl -tag -width /dev/stderr -compact -.It Pa /dev/fd/# -.It Pa /dev/stdin -.It Pa /dev/stdout -.It Pa /dev/stderr -.It Pa /dev/tty -.El -.Sh SEE ALSO -.Xr mount 2 , -.Xr tty 4 , -.Xr fstab 5 , -.Xr mount 8 , -.Xr umount 8 -.Sh HISTORY -The -.Nm -utility first appeared in -.Bx 4.4 . -.Sh CAVEATS -This filesystem may not be NFS-exported. |