The CIFS VFS support for Linux supports many advanced network filesystem
-features such as heirarchical dfs like namespace, hardlinks, locking and more.
+features such as hierarchical dfs like namespace, hardlinks, locking and more.
It was designed to comply with the SNIA CIFS Technical Reference (which
supersedes the 1992 X/Open SMB Standard) as well as to perform best practice
practical interoperability with Windows 2000, Windows XP, Samba and equivalent
(gid) mount option is specified. For the uid (gid) of newly
created files and directories, ie files created since
the last mount of the server share, the expected uid
- (gid) is cached as as long as the inode remains in
+ (gid) is cached as long as the inode remains in
memory on the client. Also note that permission
checks (authorization checks) on accesses to a file occur
at the server, but there are cases in which an administrator
the local process on newly created files, directories, and
devices (create, mkdir, mknod). If the CIFS Unix Extensions
are not negotiated, for newly created files and directories
- instead of using the default uid and gid specified on the
+ instead of using the default uid and gid specified on
the mount, cache the new file's uid and gid locally which means
that the uid for the file can change when the inode is
reloaded (or the user remounts the share).
user_xattr Allow getting and setting user xattrs as OS/2 EAs (extended
attributes) to the server (default) e.g. via setfattr
and getfattr utilities.
- nouser_xattr Do not allow getfattr/setfattr to get/set xattrs
+ nouser_xattr Do not allow getfattr/setfattr to get/set/list xattrs
mapchars Translate six of the seven reserved characters (not backslash)
*?<>|:
to the remap range (above 0xF000), which also
create device files and fifos in a format compatible with
Services for Unix (SFU). In addition retrieve bits 10-12
of the mode via the SETFILEBITS extended attribute (as
- SFU does). In the future the bottom 9 bits of the mode
+ SFU does). In the future the bottom 9 bits of the
mode also will be emulated using queries of the security
descriptor (ACL).
-sec Security mode. Allowed values are:
+ sign Must use packet signing (helps avoid unwanted data modification
+ by intermediate systems in the route). Note that signing
+ does not work with lanman or plaintext authentication.
+ sec Security mode. Allowed values are:
none attempt to connection as a null user (no name)
krb5 Use Kerberos version 5 authentication
krb5i Use Kerberos authentication and packet signing
server requires signing also can be the default)
ntlmv2 Use NTLMv2 password hashing
ntlmv2i Use NTLMv2 password hashing with packet signing
+ lanman (if configured in kernel config) use older
+ lanman hash
The mount.cifs mount helper also accepts a few mount options before -o
including:
it. If set to two, cifs packet signing is
required even if the server considers packet
signing optional. (default 1)
+SecurityFlags Flags which control security negotiation and
+ also packet signing. Authentication (may/must)
+ flags (e.g. for NTLM and/or NTLMv2) may be combined with
+ the signing flags. Specifying two different password
+ hashing mechanisms (as "must use") on the other hand
+ does not make much sense. Default flags are
+ 0x07007
+ (NTLM, NTLMv2 and packet signing allowed). Maximum
+ allowable flags if you want to allow mounts to servers
+ using weaker password hashes is 0x37037 (lanman,
+ plaintext, ntlm, ntlmv2, signing allowed):
+
+ may use packet signing 0x00001
+ must use packet signing 0x01001
+ may use NTLM (most common password hash) 0x00002
+ must use NTLM 0x02002
+ may use NTLMv2 0x00004
+ must use NTLMv2 0x04004
+ may use Kerberos security (not implemented yet) 0x00008
+ must use Kerberos (not implemented yet) 0x08008
+ may use lanman (weak) password hash 0x00010
+ must use lanman password hash 0x10010
+ may use plaintext passwords 0x00020
+ must use plaintext passwords 0x20020
+ (reserved for future packet encryption) 0x00040
+
cifsFYI If set to one, additional debug information is
logged to the system error log. (default 0)
-ExtendedSecurity If set to one, SPNEGO session establishment
- is allowed which enables more advanced
- secure CIFS session establishment (default 0)
-NTLMV2Enabled If set to one, more secure password hashes
- are used when the server supports them and
- when kerberos is not negotiated (default 0)
traceSMB If set to one, debug information is logged to the
system error log with the start of smb requests
and responses (default 0)
git.openpandora.org / pandora-kernel.git / blobdiff