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man pages section 8: System Administration Commands

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Updated: Thursday, June 13, 2019
 
 

rmmount(8)

Name

rmmount - removable media mounter for CD-ROM, 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 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 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 ), the file system is mounted read-only.

If a file system is not identified, rmmount does not mount a file system.

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.

Attributes

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Availability
system/storage/media-volume-manager

See Also

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