CIFSCREDS(1)                                                      CIFSCREDS(1)

       cifscreds - manage NTLM credentials in kernel keyring

       cifscreds add|clear|clearall|update [-u username] [-d] host|domain

       The cifscreds program is a tool for managing credentials (username and
       password) for the purpose of establishing sessions in multiuser mounts.

       When a cifs filesystem is mounted with the "multiuser" option, and does
       not use krb5 authentication, it needs to be able to get the credentials
       for each user from somewhere. The cifscreds program is the tool used to
       provide these credentials to the kernel.

       The first non-option argument to cifscreds is a command (see the
       COMMANDS section below). The second non-option argument is a hostname
       or address, or an NT domain name.

       add Add credentials to the kernel to be used for connecting to the
           given server, or servers in the given domain.

           Clear credentials for a particular host or domain from the kernel.

           Clear all cifs credentials from the kernel.

           Update stored credentials in the kernel with a new username and

       -d, --domain
           The provided host/domain argument is a NT domainname.

           Ordinarily the second argument provided to cifscreds is treated as
           a hostname or IP address. This option causes the cifscreds program
           to treat that argument as an NT domainname instead.

           If there are not host specific credentials for the mounted server,
           then the kernel will next look for a set of domain credentials
           equivalent to the domain= option provided at mount time.

       -u, --username
           Ordinarily, the username is derived from the unix username of the
           user adding the credentials. This option allows the user to
           substitute a different username.

       The cifscreds utility requires a kernel built with support for the
       login key type. That key type was added in v3.3 in mainline Linux

       Since cifscreds adds keys to the session keyring, it is highly
       recommended that one use pam_keyinit to ensure that a session keyring
       is established at login time.


       The cifscreds program was originally developed by Igor Druzhinin
       <>. This manpage and a redesign of the code was done
       by Jeff Layton <>.

                                  2012-07-17                      CIFSCREDS(1)
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