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mount(1M)
_________________________________________________________________
mount, umount -- mount or unmount filesystems and remote resources
(generic)
Synopsis
mount [-v | -p]
mount [-F FSType] [-V] [current_options] [-o specific_options]
[special | mount_point]
mount [-F FSType] [-V] [current_options] [-o specific_options]
special mount_point
umount [-V] [-o specific_options] [special | mount_point]
Description
Filesystems other than root (/) are considered removable in the sense
that they can be either available to users or unavailable. mount
notifies the system that special, a block special device or a remote
resource, is available to users from the mount_point which must
already exist; it becomes the name of the root of the newly mounted
special or resource.
mount, when entered with arguments, validates all arguments except the
device name and invokes an FSType specific mount module. If invoked
with no arguments, mount lists all the mounted filesystems from the
mount table. If invoked with any of the following partial argument
lists (for example, one of special or mount_point or when both
arguments are specified but no FSType is specified), mount will search
/etc/vfstab to fill in the missing arguments: FSType, special,
mount_point, specific_options. It will then invoke the FSType-specific
mount module.
Most FSTypes do not have a umount specific module. If one exists, it
is executed; otherwise, the generic module unmounts the filesystem. If
the -o option is specified, the umount specific module is always
executed.
current_options are options supported by the s5-specific module of
mount and umount. Other FSTypes do not necessarily support these
options. specific_options indicate suboptions specified in a
comma-separated list of suboptions and/or keyword-attribute pairs for
interpretation by the FSType-specific module of the command.
The options are:
-v
Print the output in a new style. The new output has the FSType
and flags displayed in addition to the old output. The
mount_point and special fields are reversed.
-p
Print the list of mounted filesystems in the /etc/vfstab
format.
-F
Specify the FSType on which to operate. The FSType must be
specified or must be determinable from /etc/vfstab while
mounting a filesystem.
-V
Echo the complete command line, but do not execute the command.
The command line is generated by using the options and
arguments provided by the user and adding to them information
derived from /etc/vfstab. This option should be used to verify
and validate the command line.
-o
Specify FSType-specific options.
mount can be used by any user to list mounted filesystems and
resources. Only a privileged user can mount or unmount filesystems.
Files
/etc/mnttab
mount table
/etc/vfstab
list of default parameters for each filesystem
Exit codes
The following values are returned by the generic mount command:
0
Successful exit
1
Usage error
2
Invalid combinations of options
4
Invalid arguments for options
5
FSType exceeds MAX characters
6
More than one FSType specified
7
Cannot open vfstab
8
getvfsany error
9
Cannot open mnttab
10
Cannot lock mnttab
11
getmntent error
12
Cannot stat mount point
13
Mount point cannot be determined
14
Mount point is not an absolute pathname
15
Mount point does not exist
18
special device cannot be determined
19
Device not found in device database
21
Cannot access device database
27
malloc error - unable to allocate memory
28
wait error - unexpected problem with filesystem dependent mount
29
fork error - Unable to create a process
30
exec error - Invalid filesystem type
31
exec error - Permission denied
The following values are returned by the generic umount command:
0
Success
1
Usage error
2
FSType name exceeds maximum characters
3
Cannot execute path
4
Cannot open mnttab
5
Cannot lock mnttab
6
Line in mnttab exceeds max chars
7
Line in mnttab has too few entries
8
Miscellaneous errors from getmntent
9
Cannot open temp file
10
Cannot write to temp file
11
umount - permission denied
12
umount - no such device
13
umount - no such directory
14
umount - not mounted
15
umount - mount pt busy
16
umount - block device required
17
umount - broken link detected
18
umount - misc error
References
mnttab(4), mount(1Mnfs), mount_bfs(1M), mount_cdfs(1M),
mount_dosfs(1M), mount_memfs(1M), mount_nucam(1M), mount_nucfs(1M),
mount_profs(1M), mount_s5(1M), mount_sfs(1M), mount_ufs(1M),
mount_vxfs(1M), setmnt(1M), vfstab(4)
Notices
mount does not prevent you from mounting a filesystem on a directory
that is not empty.
The old output format will be phased out in a future release and all
output will be in the new -v format. The most significant changes are
the addition of two new fields to show the FSType and flags, and the
reversal of the mount_point and special name.
mount adds an entry to the mount table /etc/mnttab; umount removes an
entry from the table.
mount will now resolve the mount_point argument using realpath(3C)
before any processing is performed.
_________________________________________________________________
5 November 1999
?1999 The Santa Cruz Operation, Inc. All rights reserved.
UnixWare 7 Release 7.1.1 - 5 November 1999
See also mount_vxfs(1M)
See also mount(1Mnfs)
See also mount(2) |
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楼主: SunPeng040709
发表于 2008-07-23 08:37
发表于 2008-07-23 10:29
