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cifscreds

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manage NTLM credentials in kernel keyring

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:Manual section: 1

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SYNOPSIS

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

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DESCRIPTION

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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.

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COMMANDS

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\ **add**\ 

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

\ **clear**\ 

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

\ **clearall**\ 

 Clear all cifs credentials from the kernel.

\ **update**\ 

 Update stored credentials in the kernel with a new username and

 password.

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OPTIONS

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\ **-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.

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NOTES

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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

kernels.

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.

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SEE ALSO

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pam_keyinit(8)

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AUTHORS

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The cifscreds program was originally developed by Igor Druzhinin

<jaxbrigs@gmail.com>. This manpage and a redesign of the code was done

by Jeff Layton <jlayton@samba.org>.