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pam_keyinit (8)
  • >> pam_keyinit (8) ( Linux man: Команды системного администрирования )
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    NAME

    pam_keyinit - Kernel session keyring initialiser module
     
    

    SYNOPSIS

    pam_keyinit.so [debug] [force] [revoke]

     

    DESCRIPTION

    The pam_keyinit PAM module ensures that the invoking process has a session keyring other than the user default session keyring.

    The session component of the module checks to see if the process's session keyring is the user default, and, if it is, creates a new anonymous session keyring with which to replace it.

    If a new session keyring is created, it will install a link to the user common keyring in the session keyring so that keys common to the user will be automatically accessible through it.

    The session keyring of the invoking process will thenceforth be inherited by all its children unless they override it.

    This module is intended primarily for use by login processes. Be aware that after the session keyring has been replaced, the old session keyring and the keys it contains will no longer be accessible.

    This module should not, generally, be invoked by programs like su, since it is usually desirable for the key set to percolate through to the alternate context. The keys have their own permissions system to manage this.

    This module should be included as early as possible in a PAM configuration, so that other PAM modules can attach tokens to the keyring.

    The keyutils package is used to manipulate keys more directly. This included in the Fedora Extras 5+ and Red Hat Enterprise Linux 4 U2+ and can also be obtained from:


     Keyutils : http://people.redhat.com/~dhowells/keyutils/ 

     

    OPTIONS

    debug
    Log debug information with syslog(3).

    force
    Causes the session keyring of the invoking process to be replaced unconditionally.

    revoke
    Causes the session keyring of the invoking process to be revoked when the invoking process exits if the session keyring was created for this process in the first place.

     

    MODULE SERVICES PROVIDED

    Only the session service is supported.

     

    RETURN VALUES

    PAM_SUCCESS
    This module will usually return this value

    PAM_AUTH_ERR
    Authentication failure.

    PAM_BUF_ERR
    Memory buffer error.

    PAM_IGNORE
    The return value should be ignored by PAM dispatch.

    PAM_SERVICE_ERR
    Cannot determine the user name.

    PAM_SESSION_ERR
    This module will return this value if its arguments are invalid or if a system error such as ENOMEM occurs.

    PAM_USER_UNKNOWN
    User not known.

     

    EXAMPLES

    Add this line to your login entries to start each login session with its own session keyring:

    
    session  required  pam_keyinit.so
          
    

     

    This will prevent keys from one session leaking into another session for the same user.

     

    SEE ALSO


     pam.conf(5), pam.d(8), pam(8)  keyctl(1) 

     

    AUTHOR

    pam_keyinit was written by David Howells, <[email protected]>.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    OPTIONS
    MODULE SERVICES PROVIDED
    RETURN VALUES
    EXAMPLES
    SEE ALSO
    AUTHOR


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