smbmount(8)
SMBMOUNT(8) MAINTENANCE COMMANDS SMBMOUNT(8)
NAME
smbmount - mount an smbfs filesystem
SYNOPSIS
smbmount {service} {mount-point} [-o options]
DESCRIPTION
smbmount mounts a Linux SMB filesystem. It is usually
invoked as mount.smbfs by the mount(8) command when using
the "-t smbfs" option. This command only works in Linux, and
the kernel must support the smbfs filesystem.
Options to smbmount are specified as a comma-separated list
of key=value pairs. It is possible to send options other
than those listed here, assuming that smbfs supports them.
If you get mount failures, check your kernel log for errors
on unknown options.
smbmount is a daemon. After mounting it keeps running until
the mounted smbfs is umounted. It will log things that hap-
pen when in daemon mode using the "machine name" smbmount,
so typically this output will end up in log.smbmount. The
smbmount process may also be called mount.smbfs.
Note
smbmount calls smbmnt(8) to do the actual mount. You must
make sure that smbmnt is in the path so that it can be
found.
OPTIONS
username=<arg>
specifies the username to connect as. If this is not
given, then the environment variable
USER is used. This option can also take the form
"user%password" or "user/workgroup" or
"user/workgroup%password" to allow the password and work-
group to be specified as part of the username.
password=<arg>
specifies the SMB password. If this option is not given
then the environment variable PASSWD is used. If it can
find no password smbmount will prompt for a passeword,
unless the guest option is given.
Note that passwords which contain the argument delimiter
character (i.e. a comma ',') will failed to be parsed
correctly on the command line. However, the same password
defined in the PASSWD environment variable or a creden-
tials file (see below) will be read correctly.
credentials=<filename>
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specifies a file that contains a username and/or pass-
word. The format of the file is:
username = <value>
password = <value>
This is preferred over having passwords in plaintext in a
shared file, such as /etc/fstab. Be sure to protect any
credentials file properly.
krb
Use kerberos (Active Directory).
netbiosname=<arg>
sets the source NetBIOS name. It defaults to the local
hostname.
uid=<arg>
sets the uid that will own all files on the mounted
filesystem. It may be specified as either a username or a
numeric uid.
gid=<arg>
sets the gid that will own all files on the mounted
filesystem. It may be specified as either a groupname or
a numeric gid.
port=<arg>
sets the remote SMB port number. The default is 445,
fallback is 139.
fmask=<arg>
sets the file mask. This determines the permissions that
remote files have in the local filesystem. This is not a
umask, but the actual permissions for the files. The
default is based on the current umask.
dmask=<arg>
Sets the directory mask. This determines the permissions
that remote directories have in the local filesystem.
This is not a umask, but the actual permissions for the
directories. The default is based on the current umask.
debug=<arg>
Sets the debug level. This is useful for tracking down
SMB connection problems. A suggested value to start with
is 4. If set too high there will be a lot of output, pos-
sibly hiding the useful output.
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SMBMOUNT(8) MAINTENANCE COMMANDS SMBMOUNT(8)
ip=<arg>
Sets the destination host or IP address.
workgroup=<arg>
Sets the workgroup on the destination
sockopt=<arg>
Sets the TCP socket options. See the smb.conf(5) socket
options option.
scope=<arg>
Sets the NetBIOS scope
guest
Don't prompt for a password
ro mount read-only
rw mount read-write
iocharset=<arg>
sets the charset used by the Linux side for codepage to
charset translations (NLS). Argument should be the name
of a charset, like iso8859-1. (Note: only kernel 2.4.0 or
later)
codepage=<arg>
sets the codepage the server uses. See the iocharset
option. Example value cp850. (Note: only kernel 2.4.0 or
later)
ttl=<arg>
sets how long a directory listing is cached in mil-
liseconds (also affects visibility of file size and date
changes). A higher value means that changes on the server
take longer to be noticed but it can give better perfor-
mance on large directories, especially over long dis-
tances. Default is 1000ms but something like 10000ms (10
seconds) is probably more reasonable in many cases.
(Note: only kernel 2.4.2 or later)
ENVIRONMENT VARIABLES
The variable USER may contain the username of the person
using the client. This information is used only if the pro-
tocol level is high enough to support session-level pass-
words. The variable can be used to set both username and
password by using the format username%password.
The variable PASSWD may contain the password of the person
using the client. This information is used only if the pro-
tocol level is high enough to support session-level pass-
words.
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The variable PASSWD_FILE may contain the pathname of a file
to read the password from. A single line of input is read
and used as the password.
OTHER COMMANDS
File systems that have been mounted using the smbmount can
be unmounted using the smbumount or the UNIX system umount
command.
BUGS
Passwords and other options containing , can not be handled.
For passwords an alternative way of passing them is in a
credentials file or in the PASSWD environment.
The credentials file does not handle usernames or passwords
with leading space.
One smbfs bug is important enough to mention here, even if
it is a bit misplaced:
•
Mounts sometimes stop working. This is usually caused by
smbmount terminating. Since smbfs needs smbmount to
reconnect when the server disconnects, the mount will
eventually go dead. An umount/mount normally fixes this.
At least 2 ways to trigger this bug are known.
Note that the typical response to a bug report is suggestion
to try the latest version first. So please try doing that
first, and always include which versions you use of relevant
software when reporting bugs (minimum: samba, kernel, dis-
tribution)
SEE ALSO
Documentation/filesystems/smbfs.txt in the linux kernel
source tree may contain additional options and information.
FreeBSD also has a smbfs, but it is not related to smbmount
For Solaris, HP-UX and others you may want to look at
smbsh(1) or at other solutions, such as Sharity or perhaps
replacing the SMB server with a NFS server.
AUTHOR
Volker Lendecke, Andrew Tridgell, Michael H. Warfield and
others.
The current maintainer of smbfs and the userspace tools
smbmount, smbumount, and smbmnt is Urban Widmark. The SAMBA
Mailing list is the preferred place to ask questions regard-
ing these programs.
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SMBMOUNT(8) MAINTENANCE COMMANDS SMBMOUNT(8)
The conversion of this manpage for Samba 2.2 was performed
by Gerald Carter. The conversion to DocBook XML 4.2 for
Samba 3.0 was done by Alexander Bokovoy.
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