USERMOUNT(1) General Commands Manual USERMOUNT(1)NAME
usermount - A graphical tool to mount, unmount and format filesystems.
SYNOPSIS
usermount [ options ]
DESCRIPTION
usermount is a graphical tool to allow users to easily manage removable media, such as floppy disks or zip disks. When the tool starts up,
it scans /etc/fstab for all filesystems that have been configured to allow users to mount and unmount them. The filesystem can be mounted
or unmounted by pressing the toggle button labeled Mount.
Also, if the user has the appropriate permissions for the device, the Format button will be active. This allows the user to format disks
using fdformat and create a new filesystem of the type listed (using mkfs with the appropriate option). Naturally, the user will be
prompted for confirmation before actually destroying data on the device.
Note that if a device is already mounted, the format button is inactive for all entries that share the same device.
When run as root, usermount displays all of the entries in /etc/fstab rather than just the ones with the user option.
OPTIONS
This program has no command line options of it's own, but it does take the standard X program options like -display and such. See the X(1)
man page for some of the common options.
FILES
/etc/fstab The system file describing the mountable filesystems.
SEE ALSO mount(8), fdformat(8), mkfs(8), fstab(5)X(1)BUGS
Mount entries with a filesystem type of iso9660 are outright considered CD-ROMs and the format button is always disabled.
Mount entries for swap files or partitions are also ignored. A nice feature might be to allow root to turn swap on and off for swap parti-
tions.
AUTHOR
Otto Hammersmith <otto@redhat.com>
Red Hat Software 3 October 1997 USERMOUNT(1)
Check Out this Related Man Page
FSTAB(5) File Formats Manual FSTAB(5)NAME
fstab - static information about the filesystems
SYNOPSIS
#include <fstab.h>
DESCRIPTION
The file fstab contains descriptive information about the various file systems. fstab is only read by programs, and not written; it is the
duty of the system administrator to properly create and maintain this file. Each filesystem is described on a separate line; fields on
each line are separated by tabs or spaces. The order of records in fstab is important because fsck(8), mount(8), and umount(8) sequen-
tially iterate through fstab doing their thing.
The first field, fs_spec, describes the block special device or remote filesystem to be mounted. For filesystems of type ufs, the special
file name is the block special file name, and not the character special file name. If a program needs the character special file name, the
program must create it by appending a ``r'' after the last ``/'' in the special file name.
The second field, fs_file, describes the mount point for the filesystem. For swap partitions, this field should be specified as ``none''.
The third field, fs_vfstype, describes the type of the filesystem. The system currently supports only two types of filesystems:
ufs a local UNIX filesystem
swap a disk partition to be used for swapping
The fourth field, fs_mntops, describes the mount options associated with the filesystem. It is formatted as a comma separated list of
options. It contains at least the type of mount (see fs_type below) plus any additional options appropriate to the filesystem type.
If the option ``quotas'' is specified, the filesystem is automatically processed by the quotacheck(8) command, and user disk quotas are
enabled with quotaon(8). Filesystem quotas are maintained in the file named quotas located at the root of the associated filesystem. This
restriction on the location of the quotas file is needlessly imposed by the kernel but may be lifted in the future. Thus, if the user
quota file for /tmp is stored in /var/quotas/tmp.user, this location can be specified as:
quotas=/var/quotas/tmp.user
The type of the mount is extracted from the fs_mntops field and stored separately in the fs_type field (it is not deleted from the
fs_mntops field). If fs_type is ``rw'' or ``ro'' then the filesystem whose name is given in the fs_file field is normally mounted read-
write or read-only on the specified special file. If fs_type is ``sw'' then the special file is made available as a piece of swap space by
the swapon(8) command at the end of the system reboot procedure. The fields other than fs_spec and fs_type are unused. If fs_type is
specified as ``xx'' the entry is ignored. This is useful to show disk partitions which are currently unused.
The fifth field, fs_freq, is used for these filesystems by the dump(8) command to determine which filesystems need to be dumped. If the
fifth field is not present, a value of zero is returned and dump(8) will assume that the filesystem does not need to be dumped.
The sixth field, fs_passno, is used by the fsck(8) program to determine the order in which filesystem checks are done at reboot time. The
root filesystem should be specified with a fs_passno of 1, and other filesystems should have a fs_passno of 2. Filesystems within a drive
will be checked sequentially, but filesystems on different drives will be checked at the same time to utilize parallelism available in the
hardware. If the sixth field is not present or zero, a value of zero is returned and fsck(8) will assume that the filesystem does not need
to be checked.
#define FSTAB_RW "rw" /* read-write device */
#define FSTAB_RO "ro" /* read-only device */
#define FSTAB_SW "sw" /* swap device */
#define FSTAB_XX "xx" /* ignore totally */
struct fstab {
char *fs_spec; /* block special device name */
char *fs_file; /* filesystem path prefix */
char *fs_vfstype; /* type of filesystem */
char *fs_mntops; /* comma separated mount options */
char *fs_type; /* rw, ro, sw, or xx */
int fs_freq; /* dump frequency, in days */
int fs_passno; /* pass number on parallel dump */
};
The proper way to read records from fstab is to use the routines getfsent(3), getfsspec(3), getfstype(3), and getfsfile(3).
FILES
/etc/fstab The file fstab resides in /etc.
SEE ALSO getfsent(3)HISTORY
The fstab file format appeared in 4.0BSD.
4.4 Berkeley Distribution January 15, 1996 FSTAB(5)