NAME
pam_chauthtok - updating authentication tokensSYNOPSIS
#include <security/pam_appl.h>
int
pam_chauthtok(pam_handle_t *pamh,
int flags);
DESCRIPTION
The pam_chauthtok function is used to change the authentication token for a given user (as indicated by the state associated with the handle pamh). 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_SILENTDo not emit any messages.
PAM_CHANGE_EXPIRED_AUTHTOK
This argument indicates to the modules that
the user's authentication token (password) should only be changed if it has
expired. If this argument is not passed, the application requires that all
authentication tokens are to be changed.
RETURN VALUES
PAM_AUTHTOK_ERRA module was unable to obtain the new
authentication token.
PAM_AUTHTOK_RECOVERY_ERR
A module was unable to obtain the old
authentication token.
PAM_AUTHTOK_LOCK_BUSY
One or more of the modules was unable to
change the authentication token since it is currently locked.
PAM_AUTHTOK_DISABLE_AGING
Authentication token aging has been disabled
for at least one of the modules.
PAM_PERM_DENIED
Permission denied.
PAM_SUCCESS
The authentication token was successfully
updated.
PAM_TRY_AGAIN
Not all of the modules were in a position to
update the authentication token(s). In such a case none of the user's
authentication tokens are updated.
PAM_USER_UNKNOWN
User unknown to password service.
SEE ALSO
pam_start(3), pam_authenticate(3), pam_setcred(3), pam_get_item(3), pam_strerror(3), pam(7)09/03/2021 | Linux-PAM Manual |