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/list xattrs
+ nouser_xattr Do not allow getfattr/setfattr to get/set xattrs
mapchars Translate six of the seven reserved characters (not backslash)
*?<>|:
to the remap range (above 0xF000), which also
nomapchars Do not translate any of these seven characters (default).
nocase Request case insensitive path name matching (case
sensitive is the default if the server suports it).
- posixpaths If CIFS Unix extensions are supported, attempt to
- negotiate posix path name support which allows certain
- characters forbidden in typical CIFS filenames, without
- requiring remapping. (default)
- noposixpaths If CIFS Unix extensions are supported, do not request
- posix path name support (this may cause servers to
- reject creatingfile with certain reserved characters).
nobrl Do not send byte range lock requests to the server.
This is necessary for certain applications that break
with cifs style mandatory byte range locks (and most
SFU does). In the future the bottom 9 bits of the mode
mode also will be emulated using queries of the security
descriptor (ACL).
- 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:
+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)
support and want to map the uid and gid fields
to values supplied at mount (rather than the
actual values, then set this to zero. (default 1)
-Experimental When set to 1 used to enable certain experimental
- features (currently enables multipage writes
- when signing is enabled, the multipage write
- performance enhancement was disabled when
- signing turned on in case buffer was modified
- just before it was sent, also this flag will
- be used to use the new experimental sessionsetup
- code).
These experimental features and tracing can be enabled by changing flags in
/proc/fs/cifs (after the cifs module has been installed or built into the
git://git.onelab.eu / linux-2.6.git / blobdiff