pam_canonicalize_user 8 Linux-PAM Linux-PAM Manual pam_canonicalize_user Get user name and canonicalize it pam_canonicalize_user.so This PAM module uses the name of the user obtained via pam_get_user3 as a key to query the password database, and replaces PAM_USER with the pw_name value that has been returned. This module does not recognise any options. Only the auth module type is provided. PAM_IGNORE The user name was set successfully. PAM_USER_UNKNOWN The user was not found. PAM_SYSTEM_ERR The application did not supply neither a user name nor a conversation method. PAM_INCOMPLETE The conversation method supplied by the application is waiting for an event. PAM_CONV_ERR The conversation method supplied by the application failed to obtain the user name. PAM_ABORT Error resuming an old conversation. PAM_BUF_ERR Memory buffer error. Prepend the PAM auth stack with the following line to canonicalize the user name before the authentication: auth required pam_canonicalize_user.so pam_get_user3 , pam_get_item3 , pam_set_item3 , getpwnam3 , pam.conf5 , pam.d5 , pam8 pam_canonicalize_user was written by Dmitry V. Levin <ldv@strace.io>.