SMBFS(7FS) File Systems SMBFS(7FS)
smbfs - CIFS/SMB file system
file system allows you to mount CIFS shares that are exported
from Windows or compatible systems. SMB is the historical name for the
CIFS protocol, which stands for Server Message Block and is more commonly
used in technical contexts.
file system permits ordinary UNIX applications to change
directory into an smbfs
mount and perform simple file and directory
operations. Supported operations include open
Some local UNIX file systems (for example UFS) have features that are not
supported by smbfs
. These include:
o No mapped-file access because mmap(2)
o Locking is local only
and is not sent to the server.
The following are limitations in the CIFS protocol:
of open files returns EBUSY
of extended attribute files returns EINVAL
o Creation of files with any of the following illegal characters
: colon (:
), backslash (\
), slash (/
), question mark (?
), double quote ("
), less than (<
greater than (>
), and vertical bar (|
settings are silently discarded.
o Links are not supported.
o Symbolic links are not supported.
is not supported. (Only file and directory objects are
The current smbfs
implementation does not support multi-user mounts.
Instead, each Unix user needs to make their own private mount points.
Currently, all access through an smbfs
mount point uses the Windows
credentials established by the user that ran the mount
permissions on smbfs
mount points should be 0700
to prevent Unix users
from using each others' Windows credentials. See the dirperms
option to mount_smbfs(1M)
for details regarding how to control smbfs
An important implication of this limitation is that system-wide mounts,
such as those made using /etc/vfstab
or automount maps are only useful in
cases where access control is not a concern, such as for public read-only
for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|Interface Stability | Uncommitted |
SEE ALSO smbutil(1)
September 9, 2009 SMBFS(7FS)