RMMOUNT(8) Maintenance Commands and Procedures RMMOUNT(8)

NAME

rmmount - removable media mounter for CD-ROM, floppy, Jaz drive, and
others

SYNOPSIS

/usr/sbin/rmmount [-D]

DESCRIPTION

The rmmount utility is a removable media mounter that is executed by
volume management whenever a removable medium, such as a CD-ROM or a
floppy, is inserted. Removable media is managed by an application or
a volume manager. rmmount can also be called by using volrmmount(1).


Upon insertion of a medium and following invocation of the
volcheck(1) command, rmmount determines what type of file system (if
any) is on that medium. If a file system is present, rmmount mounts
the file system in one of the locations listed below.


For a diskette (floppy):

/floppy/floppy0
symbolic link to mounted floppy in local
floppy drive


/floppy/floppy_name
mounted named floppy


/floppy/unnamed_floppy
mounted unnamed floppy


For a CD-ROM or a DVD-ROM:

/cdrom/cdrom0

symbolic link to mounted CD-ROM in local CD-ROM drive


/cdrom/CD-ROM_name

mounted named CD-ROM


/cdrom/CD-ROM_name/partition

mounted named CD-ROM with partitioned file system


/cdrom/unnamed_cdrom

mounted unnamed CD-ROM


For a Zip drive:

/rmdisk/zip0
symbolic link to mounted Zip medium in
local Zip drive


/rmdisk/Zip_name
mounted named Zip medium


/rmdisk/Zip_name/partition
mounted named Zip medium with
partitioned file system


/rmdisk/unnamed_zip
mounted unnamed Zip medium


For a Jaz drive:

/rmdisk/jaz0
symbolic link to mounted Jaz medium in
local Jaz drive


/rmdisk/Jaz_name
mounted named Jaz medium


/rmdisk/Jaz_name/partition
mounted named Jaz medium with
partitioned file system


/rmdisk/unnamed_Jaz
mounted unnamed Jaz medium


For a generic "rmdisk" drive:

/rmdisk/rmdisk0

symbolic link to mounted removable medium in local removable
medium drive


/rmdisk/rmdisk_name

mounted named removable medium


/rmdisk/rmdisk_name/partition

mounted named removable medium with partitioned file system


/rmdisk/unnamed_rmdisk

mounted unnamed removable medium


If the media is read-only (for example, a CD-ROM or a floppy with
write-protect tab set), the file system is mounted read-only.


If a file system is not identified, rmmount does not mount a file
system. See the for more information on the location of CD-ROM,
floppy, and other media without file systems.


If a file system type has been determined, it is then checked to see
that it is "clean." If the file system is "dirty," fsck -p (see
fsck(8)) is run in an attempt to clean it. If fsck fails, the file
system is mounted read-only.


After the mount is complete, "actions" associated with the media type
are executed. These actions allow for the notification to other
programs that new media are available.


Actions are executed in the order in which they appear in the
configuration file. The action function can return either 1 or 0. If
it returns 0, no further actions will be executed. This allows the
function to control which applications are executed.


In order to execute an action, rmmount performs a dlopen(3C) on the
shared object and calls the action function defined within it. The
definition of the interface to actions can be found in
/usr/include/rmmount.h.


File systems mounted by rmmount are always mounted with the nosuid
flag set, thereby disabling setuid programs and access to block or
character devices in that file system. Upon ejection, rmmount
unmounts mounted file systems and executes actions associated with
the media type. If a file system is "busy" (that is, it contains the
current working directory of a live process), the ejection will fail.

OPTIONS

-D
Turn on the debugging output from the rmmount dprintf calls.

FILES

/usr/lib/rmmount/*.so.1
shared objects used by rmmount.

SEE ALSO

volcheck(1), volrmmount(1), dlopen(3C), attributes(7), fsck(8)


March 1, 2007 RMMOUNT(8)