mount_fdesc(8) [opendarwin man page]

MOUNT_FDESC(8)						    BSD System Manager's Manual 					    MOUNT_FDESC(8)

NAME

     mount_fdesc -- mount the file-descriptor file system

SYNOPSIS

     mount_fdesc [-o options] fdesc mount_point

DESCRIPTION

     The mount_fdesc command attaches an instance of the per-process file descriptor namespace to the global filesystem namespace.  The conven-
     tional mount point is /dev and the filesystem should be union mounted in order to augment, rather than replace, the existing entries in /dev.
     This command is normally executed by mount(8) at boot time.

     The options are as follows:

     -o      Options are specified with a -o flag followed by a comma separated string of options.  See the mount(8) man page for possible options
	     and their meanings.

     The contents of the mount point are fd, stderr, stdin, stdout and tty.

     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 /dev/fd/0 through /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:

	   fd = open("/dev/fd/0", mode);

     and the call:

	   fd = fcntl(0, F_DUPFD, 0);

     are equivalent.

     The files /dev/stdin, /dev/stdout and /dev/stderr appear as symlinks to the relevant entry in the /dev/fd sub-directory.  Opening them is
     equivalent to the following calls:

	   fd = fcntl(STDIN_FILENO,  F_DUPFD, 0);
	   fd = fcntl(STDOUT_FILENO, F_DUPFD, 0);
	   fd = fcntl(STDERR_FILENO, F_DUPFD, 0);

     Flags to the open(2) call other than O_RDONLY, O_WRONLY and O_RDWR are ignored.

     The /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.

FILES

     /dev/fd/#
     /dev/stdin
     /dev/stdout
     /dev/stderr
     /dev/tty

SEE ALSO

     mount(2), unmount(2), tty(4), fstab(5), mount(8)

CAVEATS

     No ~.  and .. entries appear when listing the contents of the /dev/fd directory.  This makes sense in the context of this filesystem, but is
     inconsistent with usual filesystem conventions.  However, it is still possible to refer to both ~.  and .. in a pathname.

     This filesystem may not be NFS-exported.

HISTORY

     The mount_fdesc utility first appeared in 4.4BSD.

4.4BSD								  March 27, 1994							    4.4BSD

mount_pcfs(1M)						  System Administration Commands					    mount_pcfs(1M)

NAME

       mount_pcfs - mount pcfs file systems

SYNOPSIS

       mount -F pcfs [generic_options] [-o FSType-specific_options] special | mount_point

       mount -F pcfs [generic_options] [-o FSType-specific_options] special mount_point

DESCRIPTION

       mount  attaches	an   MS-DOS  file system  (pcfs) to the file system hierarchy at the mount_point, which is the pathname of a directory. If
       mount_point has any contents prior to the mount operation, these are hidden until the file system is unmounted.

       If  mount is invoked with  special or  mount_point as the only arguments,  mount will search  /etc/vfstab to fill in the missing arguments,
       including the  FSType-specific_options; see mount(1M) for more details.

       The  special argument can be one of two special device file types:

	 o  A floppy disk, such as /dev/diskette0 or /dev/diskette1.

	 o  A  DOS logical drive on a hard disk expressed as device-name:logical-drive , where device-name specifies the special block device-file
	    for the whole disk and logical-drive is either a drive letter  (c  through	z)  or	a  drive  number  (1  through  24).  Examples  are
	    /dev/dsk/c0t0d0p0:c and /dev/dsk/c0t0d0p0:1.

       The  special device file type must have a formatted MS-DOS file system with either a 12-bit, 16-bit, or 32-bit File  Allocation Table.

OPTIONS

       generic_options

	   See	mount(1M) for the list of supported options.

       -o

	   Specify  pcfs file system specific options.	The following options are supported:

	   foldcase|nofoldcase

	       Force uppercase characters in filenames to lowercase when reading them from the filesystem. This is for compatibility with the pre-
	       vious behavior of  pcfs. The default is	nofoldcase.

FILES

       /etc/mnttab     table of mounted file systems

       /etc/vfstab     list of default parameters for each file system

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWesu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mount(1M), mountall(1M), mount(2), mnttab(4), vfstab(4), attributes(5), pcfs(7FS)

NOTES

       If the directory on which a file system is to be mounted is a symbolic link, the file system is mounted on the directory to which the  sym-
       bolic link refers, rather than on top of the symbolic link itself.

SunOS 5.10							    24 Nov 2003 						    mount_pcfs(1M)