The
pam_sm_setcred function returns one of the following values:
[PAM_ABORT]
General failure.
[PAM_BUF_ERR]
Memory buffer error.
[PAM_CONV_ERR]
Conversation failure.
[PAM_CRED_ERR]
Failed to set user credentials.
[PAM_CRED_EXPIRED]
User credentials have expired.
[PAM_CRED_UNAVAIL]
Failed to retrieve user credentials.
[PAM_IGNORE]
Ignore this module.
[PAM_PERM_DENIED]
Permission denied.
[PAM_SERVICE_ERR]
Error in service module.
[PAM_SYSTEM_ERR]
System error.
[PAM_USER_UNKNOWN]
Unknown user.