PAM_PASSWD_AUTH(5) Standards, Environments, and Macros PAM_PASSWD_AUTH(5)


NAME


pam_passwd_auth - authentication module for password

SYNOPSIS


pam_passwd_auth.so.1


DESCRIPTION


pam_passwd_auth provides authentication functionality to the password
service as implemented by passwd(1). It differs from the standard PAM
authentication modules in its prompting behavior. It should be the first
module on the password service authentication stack.


The name of the user whose password attributes are to be updated must be
present in the PAM_USER item. This can be accomplished due to a previous
call to pam_start(3PAM), or explicitly set by pam_set_item(3PAM). Based
on the current user-id and the repository that is to by updated, the
module determines whether a password is necessary for a successful update
of the password repository, and if so, which password is required.


The following options can be passed to the module:

debug
syslog(3C) debugging information at the LOG_DEBUG level


nowarn
Turn off warning messages


server_policy
If the account authority for the user, as specified by
PAM_USER, is a server, do not apply the Unix policy from
the passwd entry in the name service switch.


ERRORS


The following error codes are returned:

PAM_BUF_ERR
Memory buffer error


PAM_IGNORE
Ignore module, not participating in result


PAM_SUCCESS
Successfully obtains authentication token


PAM_SYSTEM_ERR
System error


ATTRIBUTES


See attributes(5) for descriptions of the following attributes:


+--------------------+-------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-------------------------+
|Interface Stability | Evolving |
+--------------------+-------------------------+
|MT Level | MT-Safe with exceptions |
+--------------------+-------------------------+

SEE ALSO


passwd(1), pam(3PAM), pam_authenticate(3PAM), pam_start(3PAM),
pam_set_item(3PAM), syslog(3C), libpam(3LIB), pam.conf(4), attributes(5),
pam_authtok_check(5), pam_authtok_get(5), pam_authtok_store(5),
pam_dhkeys(5), pam_unix_account(5), pam_unix_auth(5), pam_unix_session(5)

NOTES


The interfaces in libpam(3LIB) are MT-Safe only if each thread within the
multi-threaded application uses its own PAM handle.


This module relies on the value of the current real UID, this module is
only safe for MT-applications that don't change UIDs during the call to
pam_authenticate(3PAM).


The pam_unix(5) module is no longer supported. Similar functionality is
provided by pam_authtok_check(5), pam_authtok_get(5),
pam_authtok_store(5), pam_dhkeys(5), pam_passwd_auth(5),
pam_unix_account(5), pam_unix_auth(5), and pam_unix_session(5).


August 10, 2002 PAM_PASSWD_AUTH(5)