Provided by:
libpam0g-dev_0.99.7.1-5ubuntu1_i386 
NAME
pam_acct_mgmt - PAM account validation management
SYNOPSIS
#include <security/pam_appl.h>
int pam_acct_mgmt(pam_handle_t *pamh, int flags);
DESCRIPTION
The pam_acct_mgmt function is used to determine if the users account is
valid. It checks for authentication token and account expiration and
verifies access restrictions. It is typically called after the user has
been authenticated.
The pamh argument is an authentication handle obtained by a prior call
to pam_start(). The flags argument is the binary or of zero or more of
the following values:
PAM_SILENT
Do not emit any messages.
PAM_DISALLOW_NULL_AUTHTOK
The PAM module service should return PAM_NEW_AUTHTOK_REQD if the
user has a null authentication token.
PAM_ACCT_EXPIRED
User account has expired.
PAM_AUTH_ERR
Authentication failure.
PAM_NEW_AUTHTOK_REQD
The user account is valid but their authentication token is expired.
The correct response to this return-value is to require that the
user satisfies the pam_chauthtok() function before obtaining
service. It may not be possible for some applications to do this. In
such cases, the user should be denied access until such time as they
can update their password.
PAM_PERM_DENIED
Permission denied.
PAM_SUCCESS
The authentication token was successfully updated.
PAM_USER_UNKNOWN
User unknown to password service.
pam_start(3), pam_authenticate(3), pam_chauthtok(3), pam_strerror(3),
pam(8)